CN107961056B - Force line measuring angle positioning device for osteotomy around knee joint - Google Patents
Force line measuring angle positioning device for osteotomy around knee joint Download PDFInfo
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- 238000005259 measurement Methods 0.000 claims description 12
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- 230000007935 neutral effect Effects 0.000 description 9
- 230000000399 orthopedic effect Effects 0.000 description 8
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- 210000003414 extremity Anatomy 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 210000002414 leg Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 241000469816 Varus Species 0.000 description 2
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- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
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- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/067—Measuring instruments not otherwise provided for for measuring angles
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Abstract
The invention provides a force line measuring angle positioning device for osteotomy around a knee joint, which comprises an angular force line measuring rod, a fixing component, a supporting needle and a splint support; the angular force line measuring rod comprises a fixed rod, a first movable rod and a second movable rod; one surface of the fixed component is connected with one end of the fixed rod, the opposite surface of the fixed component, which is positioned on the connecting surface of the fixed rod and the fixed component, is movably connected with one end of the first movable rod, and the other end of the first movable rod is pivoted with the second movable rod through a pivoting shaft; the supporting needle passes through the femur or tibia of the lower limb of the human body, and two ends of the supporting needle are fixed on the splint support; the fixing component is positioned above the lower limbs and is movably connected with the splint support. The invention has the beneficial effects that: the product is simple to operate, convenient to use, stable and reliable; the operation time is shortened, the accuracy of osteotomy correction is improved, the number of fluoroscopy times and the radiation amount in the operation are greatly reduced, and the influence on the body health caused by more radiation received by patients and doctors is avoided.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a force line measuring angle positioning device for osteotomy around a knee joint.
Background
In patients with knee joint pain in the clinic, early osteoarthritis is often accompanied by varus deformity of the knee joint. The proximal tibia joint surface or the distal femur joint surface is inverted relative to a normal person due to congenital or acquired factors of a patient, so that the knee joint is inverted and deformed, a lower limb force line, namely a weight load line passes through the inner side of the knee joint during loading, the inner side knee joint bears large stress, the joint is degenerated and accelerated after the physiological bearing level is exceeded, the knee joint is further aggravated to be inverted, and vicious circle is caused. The lower limb force line is a connecting line from the middle point of the femoral head to the middle point of the ankle joint when the lower limb is in the neutral position, namely the patella is positioned in front of the lower limb. The lower limb force line of a normal person usually passes through the middle point of the knee joint, so that for a knee joint varus patient with less serious early joint degeneration, the lower limb force line can be corrected through osteotomy of the proximal end of the tibia or the distal end of the femur to be positioned at the middle point or slightly more lateral position of the knee joint, so that the stress born by the inner side of the knee joint is dispersed, and the symptoms of the patient are improved.
Currently, the measurement of lower limb force lines during surgery requires the use of a long metal rod and is performed under X-ray fluoroscopy. When the neutral position of the lower limb is ensured, namely the patella is positioned in the knee joint neutral position under fluoroscopy, the metal rod is arranged above the lower limb on one side, one end of the metal rod passes through the middle point of the femoral head, the other end of the metal rod passes through the middle point of the ankle joint, and then the position of the metal rod passing through the knee joint is observed under X-ray fluoroscopy, so that whether the angle for osteotomy correction is proper or not is judged. Clinically, because no corresponding fixing device is available, two doctors are generally required to operate, one doctor holds the leg of the patient to keep the leg in a neutral position and adjusts the far end of the metal rod to pass through the midpoint of the ankle joint under fluoroscopy, and the other doctor adjusts the near end of the metal rod to pass through the midpoint of the femoral head.
When the osteotomy operation is performed on the proximal tibia end or the distal femur end, a kirschner wire is firstly required to be placed under X-ray fluoroscopy to judge an osteotomy line, then the lower limb force line is adjusted through opening or closing the osteotomy end after the osteotomy, and at the moment, multiple fluoroscopy is required to judge whether the needle placement position is proper and the angle of osteotomy correction is accurate, so that a doctor is inevitably exposed under X-ray radiation for multiple times. The doctor can not ensure absolute stability by holding the limbs or the metal rods, so that the measurement accuracy is influenced, and the operation time is greatly prolonged by multiple X-ray fluoroscopy, so that the operation safety of a patient is influenced. In addition, the fluoroscopy process can also greatly increase the dose of radiation to the patient and surgeon, affecting their health.
However, the prior art does not have a corresponding device to assist in completing the operations, and an invention patent disclosed in the present application, application No. 201710142181.5, a force line positioner for high tibial osteotomy, which can solve the problems that a doctor needs to hold a force line measuring piece for positioning in the existing high tibial osteotomy, the precision of the high tibial osteotomy is affected, and the radiation dose applied to the surgeon is increased to affect the health of the doctor according to the description of the specification. However, the description does not mention how to control the neutral position of the lower limb, so 1 doctor needs to assist in controlling the external rotation of the lower limb in the operation. In addition, the fixation of the device and the limb is not absolutely firm, the limb needs to be repositioned every time after moving in the operation, the operation is complicated, and the positioner is only used for the lower limb force line, has no other derived functions, and has limited application range.
Disclosure of Invention
In order to solve the technical problem, the invention provides a force line measuring angle positioning device for osteotomy around a knee joint.
The specific technical scheme of the invention is as follows:
a force line measuring angle positioning device for osteotomy around knee joint comprises an angular force line measuring rod, a fixing component, a supporting needle and a splint support;
the angulatable force line measuring rod comprises a fixed rod, a first movable rod and a second movable rod; one surface of the fixed component is connected with one end of the fixed rod, the opposite surface of the fixed component, which is positioned on the connecting surface of the fixed rod and the fixed component, is movably connected with one end of the first movable rod, and the other end of the first movable rod is pivoted with the second movable rod through a pivoting shaft; the second movable rod can horizontally swing relative to the first movable rod, and the first movable rod can horizontally swing relative to the fixed rod;
the supporting needle penetrates through the femur or tibia of the lower limb of the human body, and two ends of the supporting needle are fixed on the splint support; the fixing component is positioned above the lower limbs and is movably connected with the splint support.
Further, the clamping plate support is of a U-shaped structure and comprises a first vertical plate, a second vertical plate and a horizontal plate for connecting the first vertical plate and the second vertical plate;
a first vertical sliding groove is formed in the first vertical plate in the vertical direction, the first vertical sliding groove penetrates through the first vertical plate in the direction perpendicular to the first vertical plate and the second vertical plate, and an opening at one end of the first vertical sliding groove is located on the top surface of the first vertical plate; a plurality of first horizontal sliding grooves which are equal in distance and cross the first vertical sliding grooves are arranged in the horizontal direction of the first vertical plate, and the first horizontal sliding grooves penetrate through the first vertical plate in the direction perpendicular to the first vertical plate and the second vertical plate; at least two support rods are pivoted on the inner surface of the first vertical plate, are positioned above the first horizontal sliding groove and are positioned on two sides of the first vertical sliding groove;
a second vertical sliding groove and a second horizontal sliding groove which correspond to the first vertical sliding groove and the first horizontal sliding groove are formed in the second vertical plate, and a supporting clamping groove which is mutually clamped with the supporting rod is further formed in the second vertical plate;
preferably, the support clamping groove is internally provided with a convex point, and the opening of the support clamping groove is provided with a chamfer.
Furthermore, scale marks which are symmetrically distributed about the radial central axis of the supporting needle are marked on the surface of the supporting needle; two ends of the supporting needle are respectively clamped in the first vertical sliding groove and the second vertical sliding groove, and the supporting needle freely slides along the first vertical sliding groove and the second vertical sliding groove;
preferably, the two ends of the support needle are sleeved with buckles; the inner surface of the buckle is covered with an anti-slip ring.
Furthermore, a supporting inserting piece is clamped on the first horizontal sliding groove and the second horizontal sliding groove, and the supporting needle is fixed on the supporting inserting piece;
preferably, the supporting insertion sheet is of a wedge-shaped structure, and a stop block is arranged on one inclined surface of the supporting insertion sheet.
Further, the fixing assembly comprises a base and a fixing table connected to the upper surface of the base;
a spherical crown-shaped cavity is arranged in the fixed table, the cavity penetrates through the connecting surface of the first movable rod and the fixed assembly, and the maximum distance between gaps of the cavity on the penetrating surface is smaller than the maximum diameter of the cavity; the plane of the cavity is parallel to the base and is attached to the base;
a rotating block which is matched with the cavity and can horizontally rotate is arranged in the cavity, the rotating block is connected with the first movable rod, and the first movable rod can horizontally rotate along a central shaft of the rotating block;
the side surface of the fixed table is provided with a threaded through hole communicated with the cavity, and a rotating block locking nut is connected in the threaded through hole;
the surface of the fixed table, which is opposite to the first movable rod, is connected with one end of the fixed rod;
an angle scale is engraved on the upper surface of the base below a horizontal symmetry axis of the base;
a clamping block penetrating through the supporting rod is arranged on the lower surface of the base, a supporting rod through hole matched with the supporting rod is formed in the clamping block, and a supporting rod locking nut is connected to the supporting rod through hole; the fixing component is matched with the supporting rod through the clamping block and is in sliding connection with the clamping plate support.
Furthermore, be located on the first movable rod directly over the angle scale open and run through the mark hole of counterpointing of first movable rod, be provided with laser generator in the mark hole, the laser beam of laser generator transmission with the coincidence of the axial center pin of first movable rod.
Furthermore, a threaded through hole matched with the pivot shaft is formed in the first movable rod; the end face of one end, close to the second movable rod, of the first movable rod is recessed with a pivoting cavity along the axial direction, the pivoting cavity penetrates through the first movable rod along the horizontal direction, and the pivoting cavity is communicated with the threaded through hole;
a concave pit is arranged on the inner wall of the pivoting concave cavity and close to the end face;
one end of the second movable rod is provided with a pivoting lug matched with the pivoting cavity, and the pivoting lug is provided with a pivoting through hole matched with the pivoting shaft; the pin joint lug is also provided with a bulge matched with the concave pit;
when the concave pit is matched with the bulge, the axial central axis of the first movable rod is superposed with the axial central axis of the second movable rod.
Furthermore, an annular angle ruler detachably connected with the pivot shaft is arranged above the first movable rod.
Furthermore, the pivot shaft is provided with an axial through hole, and a central shaft of the axial through hole is overlapped with a central shaft of the pivot shaft.
Further, a sliding rail is arranged above the second movable rod along the length direction of the second movable rod;
preferably, one end of the slide rail, which is far away from the pivot joint, is provided with a limiting block;
preferably, the upper surface of the slide rail is positioned under the marking line of the annular angle ruler, and an observation guide line is arranged under the marking line of the annular angle ruler; the observation guide line is superposed with the symmetry axis of the slide rail;
the sliding rail is matched with a sliding block, and a sliding block threaded through hole is formed in the sliding block;
a osteotomy line positioner is arranged above the sliding block, and a through hole is formed in the bottom of the upper surface of the osteotomy line positioner; the osteotomy line positioner is connected with the sliding block through a top-tightening nut matched with the sliding block threaded through hole and the penetration through hole;
the osteotomy line positioner is of an L-shaped structure and comprises a horizontal part and a vertical part; a plurality of developing strips are embedded in the horizontal part at equal intervals along the length direction of the horizontal part, the developing strips penetrate through the upper surface and the lower surface of the horizontal part, and the connecting lines of the symmetry axes of the plurality of developing strips are superposed with the symmetry axis of the horizontal part;
preferably, the osteotomy line locator and the developing strip are made of X-ray transparent materials, and the density of the developing strip is greater than that of the osteotomy line locator;
preferably, the vertical part is provided with a plurality of kirschner wire guide holes which are arranged in a straight line and penetrate through the inner surface and the outer surface of the vertical part along the vertical direction, and the horizontal projection of the plurality of kirschner wire guide holes is superposed with the development dotted lines of the plurality of development bars; an observation through hole is formed in the vertical portion above the Kirschner wire guide hole.
The invention has the following beneficial effects:
1. through the fixing of support needle and splint support, conveniently control patient's low limbs and be located neutral position, the line of force measuring stick links to each other with the splint support through fixed subassembly, has improved the stability of line of force measuring stick greatly, can carry out the line of force measurement under the perspective without hand.
2. The force line measuring rod is designed to be capable of angulation, the angulation degree can be determined through the external dial, the precision of osteotomy correction in an operation is improved, the knee joint orthopedic device is suitable for knee joint patients with different angles and the situation that the legs of the patients rotate along the force line of the lower limbs in the operation process, and the application range of the knee joint orthopedic device is expanded.
3. The force line measuring rod can be placed in an angulated mode before osteotomy is started after a locating point is determined, the osteotomy is straightened and placed after osteotomy straightening is completed and matched with an original locating point, whether osteotomy straightening is suitable or not can be judged through the measuring rod without needing perspective in the operation, repositioning is not needed, the number of perspective times and the radiation quantity in the operation are greatly reduced, the operation time is shortened, the operation safety of a patient is improved, and the problem that the patient and a doctor receive more radiation quantity to influence body health is avoided.
4. The measuring rod is matched with the osteotomy line positioner, and the kirschner wire can be placed into the guide hole to assist in osteotomy after the osteotomy line is positioned under fluoroscopy, so that the accuracy of osteotomy correction is further improved, and a favorable guarantee is provided for implementation of an osteotomy operation.
5. The invention ensures the accurate implementation of the osteotomy through a mechanical structure, and has the advantages of simple operation, convenient use, stability and reliability.
Drawings
FIG. 1 is a schematic view of a force line measuring angular positioning device for osteotomies around a knee joint;
FIG. 2 is an enlarged partial view of the angle force line measurement rod mated with the mounting assembly;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is an enlarged partial view of the angle force line measurement rod in cooperation with the osteotomy line locator;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a partial cross-sectional view of the first movable bar;
FIG. 7 is a partial cross-sectional view of the second movable bar;
FIG. 8 is a schematic structural view of an osteotomy line locator;
FIG. 9 is a schematic view of the structure of the splint support engaging the support pins;
FIG. 10 is a top view of the cleat mount;
FIG. 11 is a front view of the cleat mount;
FIG. 12 is a schematic view of a first vertical plate;
FIG. 13 is a schematic view of a second vertical plate;
FIG. 14 is a schematic structural view of the supporting pin;
FIG. 15 is a schematic view of a support insert;
fig. 16 is a schematic structural view of the buckle.
Wherein: 1. a line of force measuring rod can be formed; 1-1, fixing a rod; 1-2, a first movable rod; 1-2-1, aligning holes; 1-2-2, a laser generator; 1-2-3, a threaded through hole; 1-2-4, a pivot cavity; 1-2-5, pits; 1-2-6, annular angle ruler; 1-3, a second movable rod; 1-3-1, a pivot joint lug; 1-3-1-1, a pivot through hole; 1-3-1-2, and bulges; 1-3-2, a slide rail; 1-3-3, a slide block; 1-3-4, a limiting block; 1-3-5, observing a guide line; 2. a fixing assembly; 2-1, a base; 2-1-1, an angle scale; 2-2, a fixed table; 2-2-1, a cavity; 2-2-2, turning blocks; 2-2-3, turning block locking nuts; 2-3, clamping blocks; 2-3-1, supporting rod through holes; 2-3-2, supporting rod locking nuts; 3. a supporting needle; 3-1, scale marking; 4. a splint support; 4-1, a first vertical plate; 4-1-1, a first vertical chute; 4-1-2, a first horizontal chute; 4-1-3, a support rod; 4-2, a second vertical plate; 4-2-1, a second vertical chute; 4-2-2, a second horizontal chute; 4-2-3, a supporting clamping groove; 4-2-4, salient points; 4-3, horizontal plate; 4-4, supporting the inserting sheet; 4-4-1, a stop block; 4-5, buckling; 4-5-1, an anti-slip ring; 5. a pivotal shaft; 5-1, axial through holes; 6. a osteotomy line locator; 6-1, connecting through holes in a penetrating manner; 6-2, horizontal part; 6-2-1, developing strip; 6-3, a vertical portion; 6-3-1, kirschner wire guide hole; 6-3-2, observing through holes; 7. and tightly pushing the nut.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings.
Example 1
FIG. 1 is a schematic view of a force line measuring angular positioning device for osteotomies around a knee joint. As shown in fig. 1, a force line measuring angular positioning device for osteotomies around a knee joint comprises an angulatable force line measuring rod 1, a fixation assembly 2, a support pin 3 and a splint support 4.
The angulatable line of force measuring rod 1 comprises a stationary rod 1-1, a first movable rod 1-2 and a second movable rod 1-3. One surface of the fixed component 2 is connected with one end of the fixed rod 1-1, the opposite surface of the fixed component 2, which is positioned on the connecting surface of the fixed rod 1-1 and the fixed component 2, is movably connected with one end of the first movable rod 1-2, and the other end of the first movable rod 1-2 is pivoted with the second movable rod 1-3 through a pivot shaft 5. The second movable rod 1-3 can horizontally swing relative to the first movable rod 1-2, and the first movable rod 1-2 can horizontally swing relative to the fixed rod 1-1.
The supporting needle 3 penetrates through the femur or tibia of the lower limb of the human body, and two ends of the supporting needle are fixed on the splint support 4; the fixing component 2 is positioned above the lower limb and is movably connected with the splint support 4.
As shown in fig. 9 to 13, preferably, the cleat housing 4 has a U-shaped structure, and the cleat housing 4 includes a first vertical plate 4-1, a second vertical plate 4-2, and a horizontal plate 4-3 connecting the first vertical plate 4-1 and the second vertical plate 4-2.
The first vertical plate 4-1 is provided with a first vertical chute 4-1-1 in the vertical direction, the first vertical chute 4-1-1 penetrates through the first vertical plate 4-1 in the direction perpendicular to the first vertical plate 4-1 and the second vertical plate 4-2, and an opening at one end of the first vertical chute 4-1-1 is positioned on the top surface of the first vertical plate 4-1. In order to improve the stability of the support pin 3 inserted into the first vertical sliding groove 4-1-1 after passing through the femur or tibia of the lower limb of the human body, so that the first vertical plate 4-1 is uniformly stressed, it is preferable that the vertical central axis of the first vertical sliding groove 4-1-1 coincides with the vertical central axis of the first vertical plate 4-1.
The first vertical plate 4-1 is horizontally provided with a plurality of first horizontal chutes 4-1-2 which have equal intervals and are crossed with the first vertical chutes 4-1-1, and the first horizontal chutes 4-1-2 penetrate through the first vertical plate 4-1 in the direction perpendicular to the first vertical plate 4-1 and the second vertical plate 4-2. The first horizontal chute 4-1-2 is used as a main stress part of the support needle 3 for acting force downwards on the first vertical plate 4-1, and preferably, two parts of the first horizontal chute 4-1-2 disconnected by the first vertical chute 4-1-1 are symmetrical about the first vertical chute 4-1-1 in order to ensure the stress uniformity of the first horizontal chute 4-1-2 and prolong the service life of the first vertical plate 4-1.
At least two support rods 4-1-3 are pivoted on the inner surface of the first vertical plate 4-1, are positioned above the first horizontal sliding groove 4-1-2 and are positioned on two sides of the first vertical sliding groove 4-1-1. In order to improve the stability of the supporting and fixing component 2 and ensure the simplification of the structure, it is further preferable that the number of the supporting rods 4-1-3 is 2 and the supporting rods are symmetrically distributed about the first vertical sliding groove 4-1-1.
The second vertical plate 4-2 is provided with a second vertical chute 4-2-1 and a second horizontal chute 4-2-2 corresponding to the first vertical chute 4-1-1 and the first horizontal chute 4-1-2, and the second vertical plate 4-2 is also provided with a support clamping groove 4-2-3 mutually clamped with the support rod 4-1-3. In order to ensure the fastening firmness of the support rod 4-1-3 and the support slot 4-2-3, it is preferable that a protruding point 4-2-4 is arranged in the support slot 4-2-3, and the protruding point 4-2-4 is fastened at the position of the support slot 4-2-3 when the two support rods 4-1-3 are perpendicular to the second vertical plate 4-2. The clamping is effectively ensured to be firm and stable through interference fit. The supporting rod 4-1-3 can be easily clamped into the supporting clamping groove 4-2-3, and further preferably, a chamfer is arranged at the opening of the supporting clamping groove 4-2-3 to play a role in guiding, so that the rigid impact of the supporting rod 4-1-3 and the supporting clamping groove 4-2-3 is effectively avoided.
During the preoperative preparation or during the X-ray fluoroscopy, the supporting needle 3 passes through the femur or tibia of the lower limb of the human body and is fixed on the splint support 4 at two ends, and the corresponding fixing position is determined. However, for various reasons, such as temporary use of the patient in the toilet, turning of the patient, problems with the X-ray apparatus, or other movement of the patient's lower limbs, the corresponding fixing points are changed, and the position of the lower limbs placed in the splint support 4 needs to be adjusted again to ensure the accuracy of the needle position and the optimal effect of X-ray fluoroscopy. In the prior art, repeated adjustment is needed for the problem, so that the operation time is prolonged, the number of fluoroscopy times and the radiation amount in the operation are increased, and the health of a patient and a doctor is directly influenced. In order to effectively improve the disadvantages, in the technical scheme, preferably, scale markings 3-1 which are symmetrically distributed about the radial central axis of the support needle 3 are engraved on the surface of the support needle 3. The doctor can visually see the fixed position of the supporting needle 3, and only needs to adjust the fixed position when the position changes. As shown in fig. 14.
Two ends of the supporting needle 3 are respectively clamped in the first vertical chute 4-1-1 and the second vertical chute 4-2-1, and the supporting needle 3 can freely slide along the first vertical chute 4-1-1 and the second vertical chute 4-2-1. The first horizontal chute 4-1-2 and the second horizontal chute 4-2-2 are both clamped with a supporting insert 4-4, and the supporting needle 3 is fixed on the supporting insert 4-4.
In order to facilitate the insertion of the supporting insertion piece 4-4 into the first horizontal sliding groove 4-1-2 and the second horizontal sliding groove 4-2 quickly and conveniently, in the technical scheme, preferably, the supporting insertion piece 4-4 is of a wedge-shaped structure and can be inserted from the inner direction and the outer direction of the first horizontal sliding groove 4-1-2 and the second horizontal sliding groove 4-2-2. The support insert 4-4 is prevented from sliding out of the sliding groove, and it is further preferable that a stopper 4-4-1 is provided on one of the inclined surfaces of the support insert 4-4, as shown in fig. 15.
If the supporting needle 3 is in an inclined state, two ends of the supporting needle 3 are respectively clamped in the first vertical chute 4-1-1 and the second vertical chute 4-2-1, and the supporting needle 3 can slide to a lower position according to the mechanical principle, thereby having adverse effects on the operation and the patient. As shown in fig. 16, it is further preferable that the two ends of the supporting needle 3 are sleeved with buckles 4-5, and the inner surfaces of the buckles 4-5 are covered with anti-slip rings 4-5-1. Preferably, the buckle 4-5 is in a direct opening and closing type, and the anti-slip ring 4-5-1 is made of soft rubber, so that the friction force is increased, and the supporting needle 3 is protected. After the positions of the supporting needle 3 and the clamping plate support 4 are determined, one buckle 4-5 is clamped on the inner surface of the lower end of the supporting needle 3 connected with the clamping plate support 4, and the other buckle 4-5 is clamped on the outer surface of the higher end of the supporting needle 3 connected with the clamping plate support 4, so that the supporting needle 3 is effectively prevented from sliding along the axial direction.
The end of the fixed rod 1-1 far away from the fixed component 2 and the end of the second movable rod 1-3 far away from the pivotal axis 5 are respectively aligned with the femoral head central point and the ankle joint central point of the human body, or the end of the fixed rod 1-1 far away from the fixed component 2 and the end of the second movable rod 1-3 far away from the pivotal axis 5 are respectively aligned with the ankle joint central point and the femoral head central point of the human body to measure the lower limb force line.
The legs of different patients have different lengths, and in order to adapt to patients with different sexes at different ages, the first movable rod 1-2 and the second movable rod 1-3 are telescopic rods provided with telescopic devices and comprise hollow outer tubes and inner rods sleeved in the outer tubes. The telescoping device comprises a fixing bolt which is radially inserted into and abutted against the surface of the inner rod along the outer pipe to fixedly connect the outer pipe and the inner rod.
The supporting needle 3 needs to horizontally penetrate into the femur or the tibia in the direction perpendicular to the lower limb, the tibial osteotomy penetrating point is on the femoral condyle, and the femoral osteotomy penetrating point is below the tibial tubercle. The supporting needle 3 is rotated by taking the lower limb force line as an axis to enable the lower limb to be in a neutral position, and the lower limb can be always kept in the neutral position by fixing the supporting inserting sheet 4-4 and the splint support 4. The lower limb force line measurement can be carried out by adjusting the angle force line measuring rod 1 and the fixing component 2 so that the two ends of the measuring rod pass through the middle point of the femoral head and the middle point of the ankle joint of the human body. The supporting needle 3 is provided with scales, the scales are recorded after the initial positioning is finished, and the accurate positioning can be conveniently carried out in the operation. The angle-adjustable force line measuring rod 1 is provided with a pivot shaft 5, which can allow the distance part and the near part of the angle-adjustable force line measuring rod 1 to perform angle rotation and lock in a horizontal plane.
When the tibia osteotomy is started, one end of the fixed rod 1-1 far away from the fixed component 2 passes through the middle point of the femoral head under X-ray fluoroscopy, the pivot shaft 5 is positioned at the middle point of the knee joint, and one end of the second movable rod 1-3 far away from the pivot shaft 5 passes through the middle point of the ankle joint and is marked on the surface skin of the ankle joint. At the moment, the angle-adjustable force line measuring rod 1 is in an angle state, after the osteotomy orthopedic operation in the operation is finished, the fixed rod 1-1 and the first movable rod 1-2 are kept still, and the ankle joint midpoint skin marking point is matched with the angle-adjustable force line measuring rod 1 when the second movable rod 1-3 rotates to be in a straightening state, so that the appropriate angle for osteotomy orthopedic operation can be judged.
If the femoral osteotomy is carried out, one end of the fixed rod 1-1 far away from the fixed component 2 passes through the midpoint of the ankle joint, the pivot shaft 5 is positioned at the midpoint of the knee joint, and one end of the second movable rod 1-3 far away from the pivot shaft 5 passes through the midpoint of the femoral head and is marked on the surface skin of the femoral head under the condition of X-ray fluoroscopy. At the moment, the angle-adjustable force line measuring rod 1 is in an angle state, after the osteotomy orthopedic operation in the operation is finished, the fixed rod 1-1 and the first movable rod 1-2 are kept still, and the femoral head midpoint skin marking point is matched with the angle-adjustable force line measuring rod 1 when the second movable rod 1-3 rotates to be in a straightening state, so that the appropriate osteotomy orthopedic angle can be judged.
Example 2
Example 2 on the basis of example 1, a more preferable structure of the force line measuring angular positioning device for osteotomies around the knee joint is provided, as shown in fig. 2 and 3. Specifically, this embodiment 2 further defines that the fixing member 2 includes a base 2-1 and a fixing table 2-2 attached to an upper surface of the base 2-1.
A spherical crown-shaped cavity 2-2-1 is arranged in the fixed platform 2-2, the cavity 2-2-1 penetrates through the connecting surface of the first movable rod 1-2 and the fixed component 2, and the maximum distance of gaps of the cavity 2-2-1 on the penetrating surface is smaller than the maximum diameter of the cavity 2-2-1. The plane of the cavity 2-2-1 is parallel to the base 2-1 and is attached to the base 2-1.
The cavity 2-2-1 is internally provided with a rotating block 2-2-2 which is matched with the cavity 2-2-1 and can horizontally rotate, the rotating block 2-2-2 is connected with a first movable rod 1-2, and the first movable rod 1-2 can horizontally rotate along the central shaft of the rotating block 2-2-2.
The side surface of the fixed platform 2-2 is provided with a threaded through hole communicated with the cavity 2-2-1, and a rotating block locking nut 2-2-3 is connected in the threaded through hole.
The surface of the fixed platform 2-2 opposite to the first movable rod 1-2 is connected with one end of the fixed rod 1-1.
In order to accurately and visually control the angulation degree of the angulation force line measuring rod 1 and improve the accuracy of osteotomy correction in an operation, an angle scale 2-1-1 is engraved on the upper surface of the base 2-1 below a horizontal symmetrical axis of the base 2-1. When the first movable rod 1-2 rotates horizontally, the angulation degree of the first movable rod 1-2 can be accurately and visually observed through the angle scale 2-1-1, and corresponding records are made. After the initial positioning, the scales are recorded, and the accurate positioning can be conveniently carried out in the operation.
The lower surface of the base 2-1 is provided with a fixture block 2-3 which is connected with the support rod 4-1-3 in a penetrating way, the fixture block 2-3 is provided with a support rod through hole 2-3-1 which is matched with the support rod 4-1-3, and the support rod through hole 2-3-1 is connected with a support rod locking nut 2-3-2. The fixing component 2 is matched with the supporting rod 4-1-3 through the fixture block 2-3 and is in sliding connection with the splint support 4.
In order to effectively improve the accurate grasp of the doctor on the angulation degree of the angulation force line measuring rod 1 and facilitate the doctor to observe the angulation degree, preferably, a mark aligning hole 1-2-1 penetrating through the first movable rod 1-2 is formed in the first movable rod 1-2 and located right above the angle scale 2-1-1, a laser generator 1-2-2 is arranged in the mark aligning hole 1-2-1, and a laser beam emitted by the laser generator 1-2-2 coincides with an axial central shaft of the first movable rod 1-2.
Example 3
One end of the second movable rod 1-3 is provided with a pivoting convex block 1-3-1 matched with the pivoting concave cavity 1-2-4, and the pivoting convex block 1-3-1 is provided with a pivoting through hole 1-3-1-1 matched with the pivoting shaft 5; the pivoting convex block 1-3-1 is also provided with a bulge 1-3-1-2 matched with the concave pit 1-2-5.
In order to facilitate the position control of the first movable rod 1-2 and the second movable rod 1-3 by the doctor during the operation, it is preferable that the axial central axis of the first movable rod 1-2 coincides with the axial central axis of the second movable rod 1-3 when the concave pit 1-2-5 is fitted with the convex pit 1-3-1-2. Namely, after the bulge 1-3-1-2 completely enters the pit 1-2-5, the first movable rod 1-2 and the second movable rod 1-3 form a straight line. Further preferably, the symmetry axis of the pit 1-2-5 coincides with the vertical symmetry axis of the first movable rod 1-2; the symmetrical axis of the bulge 1-3-1-25 is coincident with the vertical symmetrical axis of the second movable rod 1-3, and after the bulge 1-3-1-2 completely enters the pit 1-2-5, the first movable rod 1-2 and the second movable rod 1-3 form a vertical straight line vertical to the lower limb of the human body.
Compared with the rotation angle required by the intraoperative angular force line measuring rod 1 obtained through preoperative imaging measurement and calculation, the accuracy of osteotomy correction is further improved, and further preferably, a detachably connected annular angle ruler 1-2-6 is arranged on the first movable rod 1-2 above the pivot shaft 5. The annular angle ruler 1-2-6 can be detachably matched with the first movable rod 1-2 in a threaded connection mode, a magnetic adsorption mode, a claw fixing mode and the like.
In order to facilitate a doctor to quickly and accurately position the pivot shaft 5 at the midpoint of the tibial platform under fluoroscopy, it is further preferable that the pivot shaft 5 is provided with an axial through hole 5-1, and the central axis of the axial through hole 5-1 coincides with the central axis of the pivot shaft 5.
Example 4
Embodiment 4 on the basis of embodiment 1 or embodiment 2 or embodiment 3, a more preferable structure of the force line measuring angular positioning device for osteotomy around the knee joint is provided, as shown in fig. 4, 5 and 8. Specifically, the embodiment 4 further defines that a sliding rail 1-3-2 is arranged above the second movable rod 1-3 along the length direction of the second movable rod 1-3, a sliding block 1-3-3 is matched on the sliding rail 1-3-2, and a sliding block threaded through hole is formed in the sliding block 1-3-3.
In order to shorten the time of the osteotomy, the invention is additionally provided with an auxiliary osteotomy device. Preferably, an osteotomy line positioner 6 is arranged above the sliding block 1-3-3, a through hole 6-1 is formed in the bottom of the upper surface of the osteotomy line positioner 6, and the osteotomy line positioner 6 is connected with the sliding block 1-3-3 through a top nut 7 matched with the sliding block threaded through hole and the through hole 6-1. The osteotomy line locator 6 is slidable along the angulatable power line measurement rod 1 and rotatable in a horizontal direction.
The osteotomy line locator 6 is an L-shaped structure, and the osteotomy line locator 6 includes a horizontal portion 6-2 and a vertical portion 6-3. A plurality of developing strips 6-2-1 are embedded in the horizontal part 6-2 at equal intervals along the length direction of the horizontal part 6-2, the developing strips 6-2-1 penetrate through the upper surface and the lower surface of the horizontal part 6-2, and the connecting line of the symmetry axes of the plurality of developing strips 6-2-1 is superposed with the symmetry axis of the horizontal part 6-2.
The material of the osteotomy line positioner 6 and the developing strip 6-2-1 is X-ray transparent material, and the material density of the developing strip 6-2-1 is greater than that of the osteotomy line positioner 6. Wherein, the X-ray transparent material can be ceramics, bamboo products, plastics, glass, thin metal and the like. In this embodiment, the osteotomy line locator 6 is made of plastic, and the developing strip 6-2-1 is made of thin metal. The developing strip 6-2-1 can be developed into a dotted line under X-ray fluoroscopy, so that the osteotomy line can be conveniently positioned.
The vertical part 6-3 is provided with a plurality of Kirschner wire guide holes 6-3-1 which are arranged in a straight line and penetrate through the inner surface and the outer surface of the vertical part 6-3 along the vertical direction, and the horizontal projection of the plurality of Kirschner wire guide holes 6-3-1 is superposed with the development dotted lines of the plurality of development bars 6-2-1. Through the matching of the development bar 6-2-1 and the horizontal projection of the kirschner wire guide hole 6-3-1, after the proper positioning of the osteotomy line is determined, 2-3 kirschner wires can be inserted into the kirschner wire guide hole 6-3-1 to assist in osteotomy.
In order to facilitate observation of the positioning process and effect of the osteotomy line in the operation, an observation through hole 6-3-2 is preferably arranged on the vertical part 6-3 and above the Kirschner wire guide hole 6-3-1.
Example 5
Example 5 on the basis of example 1 or example 2 or example 3 or example 4, a more preferable structure of the force line measuring angular positioning device for the osteotomy around the knee joint is provided, as shown in fig. 4. Specifically, the embodiment 5 further defines that a limiting block 1-3-4 is arranged at one end of the sliding rail 1-3-2 far away from the pivot joint, so as to prevent the sliding block 1-3-3 from sliding off the sliding rail 1-3-2.
In order to further facilitate the observation of the angulation degree of the second movable rod 1-3 relative to the first movable rod 1-2 by a doctor in the operation process and further increase the accuracy of osteotomy correction, preferably, the upper surface of the sliding rail 1-3-2 is positioned right below the marking line of the annular angle ruler 1-2-6, and an observation guide line 1-3-5 is arranged right below the marking line of the annular angle ruler 1-2-6; and observing that the guide line 1-3-5 is superposed with the symmetry axis of the slide rail 1-3-2.
The invention has the beneficial effects that:
1. through the fixing of support needle and splint support, conveniently control patient's low limbs and be located neutral position, the line of force measuring stick links to each other with the splint support through fixed subassembly, has improved the stability of line of force measuring stick greatly, can carry out the line of force measurement under the perspective without hand.
2. The force line measuring rod is designed to be capable of angulation, the angulation degree can be determined through the external dial, the precision of osteotomy correction in an operation is improved, the knee joint orthopedic device is suitable for knee joint patients with different angles and the situation that the legs of the patients rotate along the force line of the lower limbs in the operation process, and the application range of the knee joint orthopedic device is expanded.
3. The force line measuring rod can be placed in an angulated mode before osteotomy is started after a locating point is determined, the osteotomy is straightened and placed after osteotomy straightening is completed and matched with an original locating point, whether osteotomy straightening is suitable or not can be judged through the measuring rod without needing perspective in the operation, repositioning is not needed, the number of perspective times and the radiation quantity in the operation are greatly reduced, the operation time is shortened, the operation safety of a patient is improved, and the problem that the patient and a doctor receive more radiation quantity to influence body health is avoided.
4. The measuring rod is matched with the osteotomy line positioner, and the kirschner wire can be placed into the guide hole to assist in osteotomy after the osteotomy line is positioned under fluoroscopy, so that the accuracy of osteotomy correction is further improved, and a favorable guarantee is provided for implementation of an osteotomy operation.
5. The invention ensures the accurate implementation of the osteotomy through a mechanical structure, and has the advantages of simple operation, convenient use, stability and reliability.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (18)
1. A force line measuring angular positioning device for osteotomy around knee joint, characterized in that: the positioning device comprises a measuring rod (1) capable of forming an angle force line, a fixing component (2), a supporting needle (3) and a splint support (4);
the angular force line measuring rod (1) comprises a fixed rod (1-1), a first movable rod (1-2) and a second movable rod (1-3); one surface of the fixed component (2) is connected with one end of the fixed rod (1-1), the opposite surface of the fixed component (2) positioned on the connecting surface of the fixed rod (1-1) and the fixed component (2) is movably connected with one end of the first movable rod (1-2), and the other end of the first movable rod (1-2) is pivoted with the second movable rod (1-3) through a pivoting shaft (5); the second movable rod (1-3) can horizontally swing relative to the first movable rod (1-2), and the first movable rod (1-2) can horizontally swing relative to the fixed rod (1-1);
the supporting needle (3) penetrates through the femur or tibia of the lower limb of the human body, and two ends of the supporting needle are fixed on the splint support (4); the fixing component (2) is positioned above the lower limbs and is movably connected with the splint support (4);
scale marks (3-1) which are symmetrically distributed about the radial central axis of the support needle (3) are marked on the surface of the support needle (3);
the supporting needle (3) is fixed on the supporting inserting sheet (4-4).
2. The force line measuring angular positioning device for osteotomy around a knee joint according to claim 1, characterized in that said splint support (4) is a U-shaped structure, said splint support (4) comprising a first vertical plate (4-1), a second vertical plate (4-2) and a horizontal plate (4-3) connecting said first vertical plate (4-1) and said second vertical plate (4-2);
a first vertical chute (4-1-1) is arranged in the vertical direction of the first vertical plate (4-1);
the first vertical chute (4-1-1) penetrates through the first vertical plate (4-1) in the direction perpendicular to the first vertical plate (4-1) and the second vertical plate (4-2), and an opening at one end of the first vertical chute (4-1-1) is positioned on the top surface of the first vertical plate (4-1);
a plurality of first horizontal sliding grooves (4-1-2) which are equal in distance and intersect with the first vertical sliding grooves (4-1-1) are arranged in the first vertical plate (4-1) in the horizontal direction, and the first horizontal sliding grooves (4-1-2) penetrate through the first vertical plate (4-1) in the direction perpendicular to the first vertical plate (4-1) and the second vertical plate (4-2); at least two support rods (4-1-3) are pivoted on the inner surface of the first vertical plate (4-1) and positioned above the first horizontal sliding groove (4-1-2) and positioned at two sides of the first vertical sliding groove (4-1-1);
the supporting device is characterized in that a second vertical sliding groove (4-2-1) and a second horizontal sliding groove (4-2-2) corresponding to the first vertical sliding groove (4-1-1) and the first horizontal sliding groove (4-1-2) are arranged on the second vertical plate (4-2), and a supporting clamping groove (4-2-3) mutually clamped with the supporting rod (4-1-3) is further arranged on the second vertical plate (4-2).
3. Force line measuring angular positioning device for osteotomy around knee joint according to claim 2, characterized in that the vertical central axis of said first vertical chute (4-1-1) coincides with the vertical central axis of said first vertical plate (4-1).
4. The force line measuring angular positioning device for osteotomy around knee joint according to claim 2, wherein a convex point (4-2-4) is provided in said support slot (4-2-3), and an opening of said support slot (4-2-3) is provided with a chamfer.
5. The force line measuring angular positioning device for osteotomy around knee joint according to claim 2, characterized in that both ends of said support needle (3) are respectively snapped in said first vertical chute (4-1-1) and said second vertical chute (4-2-1), and said support needle (3) is freely slidable along said first vertical chute (4-1-1) and said second vertical chute (4-2-1).
6. The force line measuring angle positioning device for osteotomy around knee joint according to claim 5, characterized in that both ends of said supporting needle (3) are further sleeved with buckles (4-5); the inner surface of the buckle (4-5) is covered with an anti-slip ring (4-5-1).
7. Force line measuring angular positioning device for osteotomy around the knee joint according to claim 5, characterized in that said first horizontal runner (4-1-2) and said second horizontal runner (4-2-2) are both snap fitted with said support tab (4-4).
8. Force line measuring angular positioning device for osteotomy around knee joint according to claim 7, characterized in that said support insert (4-4) is wedge-shaped, one of the inclined planes of said support insert (4-4) being provided with a stop (4-4-1).
9. The force line measuring angular positioning device for osteotomy around knee joint according to claim 2, characterized in that said fixation assembly (2) comprises a base (2-1) and a fixation table (2-2) attached to an upper surface of said base (2-1);
a spherical crown-shaped cavity (2-2-1) is arranged in the fixed table (2-2), the cavity (2-2-1) penetrates through the connecting surface of the first movable rod (1-2) and the fixed component (2), and the maximum distance of gaps of the cavity (2-2-1) on the penetrating surface is smaller than the maximum diameter of the cavity (2-2-1); the plane of the cavity (2-2-1) is parallel to the base (2-1) and is attached to the base (2-1);
a rotating block (2-2-2) which is matched with the cavity (2-2-1) and can horizontally rotate is arranged in the cavity (2-2-1), the rotating block (2-2-2) is connected with the first movable rod (1-2), and the first movable rod (1-2) can horizontally rotate along the central shaft of the rotating block (2-2-2);
the side surface of the fixed table (2-2) is provided with a threaded through hole communicated with the cavity (2-2-1), and a rotating block locking nut (2-2-3) is connected in the threaded through hole;
the surface of the fixed table (2-2) opposite to the first movable rod (1-2) is connected with one end of the fixed rod (1-1);
an angle scale (2-1-1) is engraved on the upper surface of the base (2-1) below a horizontal symmetry axis of the base (2-1);
a clamping block (2-3) which is connected with the supporting rod (4-1-3) in a penetrating way is arranged on the lower surface of the base (2-1), a supporting rod through hole (2-3-1) which is matched with the supporting rod (4-1-3) is formed in the clamping block (2-3), and the supporting rod through hole (2-3-1) is connected with a supporting rod locking nut (2-3-2); the fixing component (2) is matched with the supporting rod (4-1-3) through the clamping block (2-3) and is in sliding connection with the clamping plate support (4).
10. The force line measurement angle positioning device for osteotomy around knee joint according to claim 9, wherein a calibration hole (1-2-1) penetrating through the first movable rod (1-2) is formed on the first movable rod (1-2) right above the angle scale (2-1-1), a laser generator (1-2-2) is arranged in the calibration hole (1-2-1), and a laser beam emitted by the laser generator (1-2-2) coincides with an axial central axis of the first movable rod (1-2).
11. Force line measuring angular positioning device for osteotomy around knee joint according to claim 1, characterized in that said first movable rod (1-2) is provided with a threaded through hole (1-2-3) cooperating with said pivot shaft (5); the end face of one end, close to the second movable rod (1-3), of the first movable rod (1-2) is provided with a pivoting cavity (1-2-4) in a recessed mode along the axial direction, the pivoting cavity (1-2-4) penetrates through the first movable rod (1-2) along the horizontal direction, and the pivoting cavity (1-2-4) is communicated with the threaded through hole (1-2-3);
a concave pit (1-2-5) is arranged on the inner wall of the pivoting concave cavity (1-2-4) close to the end face;
one end of the second movable rod (1-3) is provided with a pivoting convex block (1-3-1) matched with the pivoting concave cavity (1-2-4), and a pivoting through hole (1-3-1-1) matched with the pivoting shaft (5) is formed in the pivoting convex block (1-3-1); the pin joint lug (1-3-1) is also provided with a bulge (1-3-1-2) matched with the pit (1-2-5);
when the concave pits (1-2-5) are matched with the convex pits (1-3-1-2), the axial central axis of the first movable rod (1-2) is overlapped with the axial central axis of the second movable rod (1-3).
12. Force line measuring angular positioning device for osteotomy around the knee joint according to claim 11, characterized in that on said first movable lever (1-2) above said pivot axis (5) is provided a removably connected annular angular ruler (1-2-6).
13. Force line measuring angular positioning device for osteotomies around the knee joint according to any one of claims 1-12, characterized in that said pivoting shaft (5) is provided with an axial through hole (5-1), the central axis of said axial through hole (5-1) coinciding with the central axis of said pivoting shaft (5).
14. The force line measuring angular positioning device for osteotomy around knee joint according to claim 12, wherein a sliding rail (1-3-2) is provided above said second movable bar (1-3) along a length direction of said second movable bar (1-3);
a sliding block (1-3-3) is matched on the sliding rail (1-3-2), and a sliding block threaded through hole is formed in the sliding block (1-3-3);
an osteotomy line positioner (6) is arranged above the sliding block (1-3-3), and a through hole (6-1) is formed in the bottom of the upper surface of the osteotomy line positioner (6); the osteotomy line positioner (6) is connected with the sliding block (1-3-3) through a top-tightening nut (7) matched with the sliding block threaded through hole and the cross-over through hole (6-1);
the osteotomy line positioner (6) is of an L-shaped structure, and the osteotomy line positioner (6) comprises a horizontal part (6-2) and a vertical part (6-3); a plurality of developing strips (6-2-1) are embedded in the horizontal part (6-2) at equal intervals along the length direction of the horizontal part (6-2), the developing strips (6-2-1) penetrate through the upper surface and the lower surface of the horizontal part (6-2), and the connecting line of the symmetry axes of the plurality of developing strips (6-2-1) is coincident with the symmetry axis of the horizontal part (6-2).
15. The force line measuring angular positioning device for osteotomy around knee joint according to claim 14, wherein the end of said sliding rail (1-3-2) away from the pivot joint is provided with a stop block (1-3-4).
16. The force line measurement angular positioning device for osteotomy around knee joint according to claim 14, characterized in that said sliding track (1-3-2) upper surface is located right below said ring angle ruler (1-2-6) marking line to observe the guide line (1-3-5); the observation guide line (1-3-5) is superposed with the symmetry axis of the slide rail (1-3-2).
17. The force line measuring angular positioning device for osteotomy around knee joint according to claim 14, characterized in that said osteotomy line locator (6) and said visualization strip (6-2-1) are both made of X-ray transparent material, and said visualization strip (6-2-1) has a material density greater than that of said osteotomy line locator (6).
18. The force line measurement angle positioning device for osteotomy around knee joint according to claim 14, wherein said vertical portion (6-3) is vertically provided with a plurality of k-wire guide holes (6-3-1) arranged in a line and penetrating through inner and outer surfaces of said vertical portion (6-3), a horizontal projection of said plurality of k-wire guide holes (6-3-1) being coincident with a visualized imaginary line of said plurality of visualized bars (6-2-1); an observation through hole (6-3-2) is formed in the vertical part (6-3) above the Kirschner wire guide hole (6-3-1).
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| CN103445839B (en) * | 2013-09-06 | 2015-06-03 | 江苏广济医疗科技有限公司 | Ankle multidimensional regulation-control orthosis |
| CN204274656U (en) * | 2014-11-21 | 2015-04-22 | 广州军区广州总医院 | A kind of bone cutting positioner in knee |
| JP2016137059A (en) * | 2015-01-27 | 2016-08-04 | 京セラメディカル株式会社 | Surgical measuring instrument |
| CN105411648B (en) * | 2015-12-30 | 2018-05-22 | 孙朝军 | Osteotomy template is positioned outside a kind of femur marrow |
| CN206333944U (en) * | 2016-09-20 | 2017-07-18 | 深圳市艾科赛龙科技股份有限公司 | A kind of knee joint femoral osteotomy positioning guide plate device |
| CN206333970U (en) * | 2016-09-20 | 2017-07-18 | 深圳市艾科赛龙科技股份有限公司 | A kind of knee joint tibial osteotomy positioning guide plate device |
| CN106880408B (en) * | 2017-03-10 | 2023-04-18 | 首都医科大学宣武医院 | Force line positioner for high tibial osteotomy |
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2017
- 2017-11-24 CN CN201711195044.4A patent/CN107961056B/en active Active
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