CN112353452B - A tibial external frame - Google Patents
A tibial external frame Download PDFInfo
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- CN112353452B CN112353452B CN202011351612.7A CN202011351612A CN112353452B CN 112353452 B CN112353452 B CN 112353452B CN 202011351612 A CN202011351612 A CN 202011351612A CN 112353452 B CN112353452 B CN 112353452B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/1657—Bone breaking devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/14—Surgical saws
- A61B17/15—Guides therefor
- A61B17/154—Guides therefor for preparing bone for knee prosthesis
- A61B17/157—Cutting tibia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
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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
- A61B90/10—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 for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/14—Fixators for body parts, e.g. skull clamps; Constructional details of fixators, e.g. pins
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Abstract
The invention discloses a tibia external frame, which comprises an ankle embracing device, wherein one side of the ankle embracing device is provided with a rack, the upper end of the rack is provided with a sleeve, the rack is connected with the sleeve through a transverse locking mechanism, a vertical rod is arranged in the sleeve, the upper end of the vertical rod penetrates out of the sleeve, the sleeve and the vertical rod are fixed through a vertical locking mechanism, and an osteotomy block locking mechanism is arranged on the vertical rod.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a tibia outer frame.
Background
In the artificial knee joint replacement operation, firstly, the upper end of a tibia is required to be cut off, a tibia platform for installing an artificial prosthesis is obtained, and the method adopted at present can not accurately position the osteotomy block, so that the artificial knee joint replacement operation is complicated to use.
Disclosure of Invention
The present invention is directed to a tibial outer frame to solve the above-mentioned problems.
In order to solve the technical problems, the invention provides the following technical scheme that the tibia outer frame comprises an ankle embracing device, the ankle embracing device is used for embracing an ankle, the tibia outer frame and a human tibia are preliminarily fixed, one side of the ankle embracing device is provided with a rack, one end of the rack is fixedly connected with the ankle embracing device, rack teeth are positioned at the lower part, the upper end of the rack is provided with a sleeve, the inside of the sleeve is hollow, the rack is connected with the sleeve through a transverse locking mechanism, the relative positions of the rack and the sleeve can be adjusted at the same time, so that the position of the sleeve from the tibia is adjusted, a vertical rod is arranged in the sleeve, the vertical rod can vertically slide in the sleeve, the upper end of the vertical rod penetrates out of the sleeve, the sleeve and the vertical rod are fixed through a vertical locking mechanism, the vertical locking mechanism is simultaneously used for adjusting the overall lengths of the sleeve and the vertical rod so as to adapt to the requirements of the tibia, the osteotomy block is arranged on the side of the bone block locking mechanism, the osteotomy block is positioned at the osteotomy position, and the osteotomy block is accurately inserted into the osteotomy position after the osteotomy block is inserted into the osteotomy cutter.
Preferably, the upper end of the vertical rod is provided with a transverse bridge, the transverse bridge is knocked and fixed on the tibia when in use, so as to improve the stability of the tibia external frame, and meanwhile, the force line can be measured in an auxiliary manner, one side of the transverse bridge is provided with a kidney-shaped hole, a transverse bridge extractor is arranged in the kidney-shaped hole, and after osteotomy is completed, the kidney-shaped hole and the transverse bridge extractor are used for assisting in extracting the transverse bridge.
Preferably, the transverse locking mechanism comprises an adjusting block, a press button, a spring, a transverse pin, a kidney-shaped hole and a pin, the adjusting block is sleeved on the rack and can slide along the rack, the upper end of the adjusting block is provided with the press button, the press button passes through the adjusting block, the press button is sleeved with the spring in the middle, the press button lower end is sleeved on the rack, the press button lower end is further provided with the transverse pin, teeth of the transverse pin and the rack are meshed, the relative positions of the rack and the sleeve are locked under the meshing action of the transverse pin and the rack and the pressing action of the spring, the kidney-shaped hole is formed in the press button side wall, the pin is arranged at the position corresponding to the adjusting block and the kidney-shaped hole, the pin is inserted into the kidney-shaped hole, the kidney-shaped hole and the pin are used for limiting the downward pressing displacement of the press button, the protection spring does not generate plastic deformation, one side of the adjusting block is fixedly connected with the sleeve, when the relative positions of the sleeve need to be adjusted, the press button is pressed, the spring is compressed, the meshing action of the transverse pin and the rack is disappeared, the opposite positions of the rack and the sleeve are reset after the adjustment of the transverse pin and the rack are reset, and the rack is reset, and the relative positions of the rack and the rack are reset.
Preferably, the vertical locking mechanism comprises a fixed block, a knob and a screw, the vertical rod is sleeved with the fixed block, the lower end of the fixed block is fixedly connected with the sleeve, one side of the fixed block is provided with the knob, one end of the knob, which is close to the fixed block, is provided with the screw, the knob is fixedly connected with the screw, the screw penetrates into the fixed block to contact with the vertical rod, the relative position of the vertical rod and the sleeve is locked under the action of pressing the screw, and the screw is screwed when the relative position of the vertical rod and the sleeve is required to be regulated.
Preferably, the osteotomy block locking mechanism comprises a pressing block, a button buckle, a second spring, a clamping hook, a connecting column, clamping grooves and column holes, the pressing block is arranged on the vertical rod, the button buckle is arranged at the upper end of the pressing block, a second spring is arranged at the lower end of one side of the button buckle, the second spring is fixed on the pressing block, the lower end of the middle part of the button buckle is hinged with the pressing block, the clamping hook is arranged at the other side of the button buckle, the connecting column is arranged at one end, close to the osteotomy block, of the pressing block, the two connecting columns are arranged at the positions, corresponding to the osteotomy block and the clamping hook, of the clamping groove, the column holes are formed at the positions, corresponding to the osteotomy block and the connecting column, the clamping hook and the clamping groove are clamped with each other, the two connecting columns are inserted into the column holes to form three-point fixation, the second spring is compressed when the button buckle is pressed after the osteotomy block is required to be taken down, the second spring is tilted, the clamping effect of the clamping hook and the clamping groove is disappeared, and the clamping effect of the clamping hook and the clamping groove is reset under the reset spring after the osteotomy block is taken down.
Preferably, the vertical through hole has been seted up at montant middle part, the button buckle passes vertical through hole, and osteotomy piece locking mechanical system can reciprocate along vertical through hole, press fixed block one side to be provided with No. two knobs, no. two knobs are close to one side of pressing the fixed block and are provided with No. two screws, no. two screws one end is fixed in on No. two knobs, no. two screws pass through pressing the fixed block and contact montant, under the pressure action of No. two screws, can lock osteotomy piece locking mechanical system and montant's relative position, when needing to adjust osteotomy piece locking mechanical system and montant's relative position, the rotation No. two screws can for after the transverse bridge is fixed in the tibia, still can adjust osteotomy piece's upper and lower position, further accurate definite osteotomy position, if produce the error when fixed transverse bridge simultaneously, can adjust this error.
Preferably, the sliding groove is formed in the transverse bridge, the sliding block is arranged at the upper end of the vertical rod, the sliding block is located in the sliding groove, the sliding groove has a certain pressing action on the sliding block, so that the sliding block and the sliding groove slide mutually to have a certain sliding resistance, a knob handle is arranged at the upper end of the sliding block and is fixed on the sliding block and used for holding and adjusting the relative positions of the transverse bridge and the tibia, one end of the sliding groove penetrates through the transverse bridge, the sliding groove has a certain pressing force on the sliding block, a pin is arranged at the lower side of one end of the transverse bridge far away from the sliding groove, and the pin is driven into the tibia to improve the stability of the tibia outer frame.
Preferably, the side wall of the transverse bridge is provided with a through groove, the kidney-shaped hole is communicated with the through groove, the lower end of the transverse bridge extractor is provided with a kidney-shaped protruding block, when the transverse bridge needs to be extracted, the transverse bridge extractor is inserted into the kidney-shaped hole, and then the transverse bridge extractor is rotated for a certain angle, so that the kidney-shaped protruding block is inserted into the through groove, an upward force is applied to the transverse bridge extractor, and the pin is extracted from the tibia.
Preferably, the osteotomies include a left osteotomies, a right osteotomies and a symmetrical osteotomies, and the left osteotomies, the right osteotomies or the symmetrical osteotomies can be selected according to the tibia defect amount during osteotomies.
Preferably, a positioning hole is formed in the lower portion of the osteotomy block, the positioning hole is internally used for penetrating through a positioning nail, the osteotomy block is fixed to the tibia osteotomy position, the back inclination angle of the osteotomy block is ensured, the osteotomy accords with the force line angle, and the bone setting amount is more accurate.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention discloses a tibia external frame, wherein the relative position of a rack and a sleeve can be adjusted by a transverse locking mechanism, so that the position of the sleeve away from the tibia can be adjusted, the integral length of the sleeve and a vertical rod can be adjusted by a vertical locking mechanism, so as to adapt to the tibia with different lengths, and the osteotomy block can be replaced according to the defect amount of the tibia by a osteotomy block locking mechanism, so that the osteotomy block is accurately positioned at the osteotomy position, and the osteotomy amount is accurate;
2. The tibia outer frame disclosed by the invention can be provided with or without a transverse bridge, is fixed on the tibia by knocking when in use, improves the stability of the tibia outer frame, can assist in measuring force lines, is provided with an outer frame extractor, and is convenient to detach;
3. the clamping hooks and the clamping grooves are mutually clamped, and the two connecting columns are inserted into the column holes to form three-point fixation, so that the osteotomy block is very firmly fixed;
4. the tibia external frame with the transverse bridge can still adjust the upper and lower positions of the osteotomy blocks after the transverse bridge is fixed on the tibia, so that the osteotomy positions are further accurately determined, and meanwhile, if errors are generated when the transverse bridge is fixed, the errors can be adjusted;
5. the lower part of the osteotomy block is provided with a positioning hole, the positioning hole is internally used for penetrating through a positioning nail to fix the osteotomy block at the tibia osteotomy position, so that the backward inclination angle of the osteotomy block of 3 degrees is ensured, the osteotomy accords with the force line, and the bone setting amount is more accurate
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is an elevation view of one tibial outer frame version one of the present invention;
Fig. 2 is an elevation view of a second tibial outer frame version of the present invention;
FIG. 3 is a cross-sectional view of the lateral locking mechanism of the present invention;
FIG. 4 is a front view of the vertical locking mechanism of the present invention;
FIG. 5 is a perspective view of the osteotomy block locking mechanism of the present invention;
fig. 6 is a perspective view of a second knob, a second screw, etc. according to the present invention;
FIG. 7 is a perspective view of a transverse bridge of the present invention;
FIG. 8 is a front view of the bridge extractor of the present invention;
FIG. 9 is a perspective view of a left osteotomy block of the present invention;
FIG. 10 is a perspective view of a right osteotomy block of the present invention;
FIG. 11 is a perspective view of a symmetrical osteotomy block of the present invention;
The ankle locking device comprises a ankle locking device 1, a rack, a sleeve 3, a transverse locking mechanism 4, a transverse locking mechanism 5, a vertical rod 6, a vertical locking mechanism 7, an osteotomy block locking mechanism 8, an osteotomy block 9, a transverse bridge 10, a waist-shaped hole 11, a transverse bridge remover 12, an adjusting block 13, a pressing button 14, a spring 15, a transverse pin 16, a waist-shaped hole 17, a pin 18, a fixed block 19, a knob 20, a screw 21, a pressing fixed block 22, a button buckle 23, a spring number two, a 24, a clamping hook 25, a connecting column 26, a clamping groove 27, a column hole 28, a vertical through hole 29, a knob number two, a nut 30, a screw number two, a sliding groove 31, a sliding block 33, a knob handle 34, a pin 35, a positioning hole 36, a through groove 37, a waist-shaped lug 38, a bone cutting block on the right side and a symmetrical osteotomy block 40.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment 1 the invention provides a scheme I of a tibia external frame, as shown in figure 1, the tibia external frame comprises an ankle embracing device 1, the ankle embracing device is used for embracing the ankle, the tibia external frame and the tibia of a human body are preliminarily fixed, one side of the ankle embracing device 1 is provided with a rack 2, one end of the rack 2 is fixedly connected with the ankle embracing device 1, teeth of the rack 2 are positioned at the lower part, the upper end of the rack 2 is provided with a sleeve 3, the interior of the sleeve 3 is hollow, the rack 2 is connected with the sleeve 3 through a transverse locking mechanism 4, the transverse locking mechanism 4 can simultaneously adjust the relative positions of the rack 2 and the sleeve 3, so as to adjust the position of the sleeve 3 from the tibia, a vertical rod 5 is arranged in the sleeve 3, the vertical rod 5 can vertically slide in the sleeve 3, the upper end of the vertical rod 5 penetrates out of the sleeve 3, the sleeve 3 and the vertical rod 5 are fixed through a vertical locking mechanism 6, the vertical locking mechanism 6 is simultaneously used for adjusting the whole lengths of the sleeve 3 and the vertical rod 5, so as to adapt to the tibia with different lengths, the osteotomy block locking mechanism 7 is arranged on the vertical rod 5, the osteotomy locking mechanism 7 is used for locking the osteotomy block 8, the osteotomy block 8 is positioned at one side of the osteotomy block 7 is precisely, and the osteotomy position 8 can be accurately determined by the osteotomy cutter 8 after the osteotomy 8 is positioned at the osteotomy 8.
As shown in fig. 3, the transverse locking mechanism 4 comprises an adjusting block 12, a press button 13, a spring 14, a transverse pin 15, a waist-shaped hole 16 and a pin 17, wherein the adjusting block 12 is sleeved on the rack 2, the adjusting block 12 can slide along the rack 2, the press button 13 is arranged at the upper end of the adjusting block 12, the press button 13 penetrates through the adjusting block 12, the spring 14 is sleeved in the middle of the press button 13, the lower end of the press button 13 is sleeved on the rack 2, the transverse pin 15 is further arranged at the lower end of the press button 13, the transverse pin 15 is meshed with teeth of the rack 2, the relative positions of the rack 2 and the sleeve 3 are locked under the meshing action of the transverse pin 15 and the rack 2 and the pressing action of the spring 14, the waist-shaped hole 16 is arranged on the side wall of the press button 13, the pin 17 is arranged at the positions corresponding to the adjusting block 12 and the waist-shaped hole 16, the pin 17 is inserted into the waist-shaped hole 16, the waist-shaped hole 16 and the pin 17 is used for limiting the downward pressing displacement of the press button 13, the protection spring is not plastically deformed, one side of the upper end of the adjusting block 12 is fixedly connected with the sleeve 3, when the relative positions of the rack 2 and the sleeve 3 need to be adjusted, the press button 14 and the rack 2 are compressed, the spring 14 and the rack 2 and the sleeve 3 are reset, and the relative positions of the rack 2 are reset, and the transverse pin 2 is pushed, and the relative positions are locked, and the transverse pin 2, and the clamp is pressed.
As shown in fig. 4, the vertical locking mechanism 6 comprises a fixed block 18, a knob 19 and a screw 20, the fixed block 18 is sleeved on the vertical rod 5, the lower end of the fixed block 18 is fixedly connected with the sleeve 3, the knob 19 is arranged on one side of the fixed block 18, the screw 20 is arranged at one end of the knob 19 close to the fixed block 18, the knob 19 is fixedly connected with the screw 20, the screw 20 penetrates into the fixed block 18 to contact with the vertical rod 5, the relative position of the vertical rod 5 and the sleeve 3 is locked under the pressing action of the screw 20, and the screw 20 is needed to be screwed when the relative position of the vertical rod 5 and the sleeve 3 is needed to be adjusted.
As shown in fig. 5, 9-11, the osteotomy block locking mechanism 7 comprises a pressing and fixing block 21, a button buckle 22, a second spring 23, a clamping hook 24, a connecting column 25, a clamping groove 26 and a column hole 27, wherein the pressing and fixing block 21 is arranged on the vertical rod 5, the button buckle 22 is arranged at the upper end of the pressing and fixing block 21, the second spring 23 is fixed on the pressing and fixing block 21, the lower end of the middle part of the button buckle 22 is hinged with the pressing and fixing block 21, the clamping hook 24 is arranged at the other side of the button buckle 22, one end of the pressing and fixing block 21 close to the osteotomy block 8 is provided with the connecting column 25, two connecting columns 25 are arranged at positions corresponding to the osteotomy block 8 and the clamping hook 24, the clamping groove 26 is arranged at positions corresponding to the osteotomy block 8 and the connecting column 25, the clamping hook 24 and the clamping groove 26 are clamped with each other, the two connecting columns 25 are inserted into the column hole 27 to form three-point fixation, when the osteotomy block 8 needs to be taken down after the osteotomy block 8 is completed, the button buckle 22 is pressed down, the second spring 23 is compressed and the clamping hook 24 is arranged at the opposite to the osteotomy block 8, the clamping hook 24 is locked by the clamping hook 24, and the osteotomy block 8 is lost, and the osteotomy block 8 is locked, and the osteotomy block is locked by the second spring is lost.
Referring to fig. 9 to 11, the osteotomies 8 include a left osteotomies 38, a right osteotomies 39 and a symmetrical osteotomies 40, and the left osteotomies 38, the right osteotomies 39 and the symmetrical osteotomies 40 may be selected according to the amount of the tibial defect.
As shown in fig. 9-11, a positioning hole 35 is formed in the lower portion of the osteotomy block 8, and a positioning nail is used for penetrating through the positioning hole 35 to fix the osteotomy block 8 at the tibia osteotomy position, so that the backward inclination angle of the osteotomy block of 3 degrees is ensured, the osteotomy accords with the force line, and the bone setting amount is more accurate.
Embodiment 2 the invention provides a scheme II of a tibia external frame, as shown in fig. 2, the tibia external frame comprises an ankle embracing device 1, the ankle embracing device is used for embracing the ankle, the tibia external frame and the tibia of a human body are preliminarily fixed, one side of the ankle embracing device 1 is provided with a rack 2, one end of the rack 2 is fixedly connected with the ankle embracing device 1, teeth of the rack 2 are positioned at the lower part, the upper end of the rack 2 is provided with a sleeve 3, the interior of the sleeve 3 is hollow, the rack 2 is connected with the sleeve 3 through a transverse locking mechanism 4, the transverse locking mechanism 4 can simultaneously adjust the relative positions of the rack 2 and the sleeve 3, so as to adjust the position of the sleeve 3 from the tibia, a vertical rod 5 is arranged in the sleeve 3, the vertical rod 5 can vertically slide in the sleeve 3, the upper end of the vertical rod 5 penetrates out of the sleeve 3, the sleeve 3 and the vertical rod 5 are fixed through a vertical locking mechanism 6, the vertical locking mechanism 6 is simultaneously used for adjusting the whole lengths of the sleeve 3 and the vertical rod 5, so as to adapt to the tibia with different lengths, the osteotomy block locking mechanism 7 is arranged on the vertical rod 5, the osteotomy locking mechanism 7 is used for locking the osteotomy block 8, the osteotomy block 8 is positioned at the osteotomy block 8, the osteotomy position 8 is positioned at one side of the osteotomy block 7 is precisely, and the osteotomy position 8 can be accurately determined by the osteotomy cutter 8.
As shown in fig. 2 and 7, the upper end of the vertical rod 5 is provided with a transverse bridge 9, the transverse bridge 9 is knocked and fixed on the tibia when in use, so as to improve the stability of the tibia external frame, and meanwhile, the force line can be assisted in measurement, one side of the tibia external frame is provided with a kidney-shaped hole 10, a transverse bridge extractor 11 is arranged in the kidney-shaped hole 10, and after the osteotomy is completed, the kidney-shaped hole 10 and the transverse bridge extractor 11 are used for assisting in extracting the transverse bridge 9.
As shown in fig. 3, the transverse locking mechanism 4 comprises an adjusting block 12, a press button 13, a spring 14, a transverse pin 15, a waist-shaped hole 16 and a pin 17, wherein the adjusting block 12 is sleeved on the rack 2, the adjusting block 12 can slide along the rack 2, the press button 13 is arranged at the upper end of the adjusting block 12, the press button 13 penetrates through the adjusting block 12, the spring 14 is sleeved in the middle of the press button 13, the lower end of the press button 13 is sleeved on the rack 2, the transverse pin 15 is further arranged at the lower end of the press button 13, the transverse pin 15 is meshed with teeth of the rack 2, the relative positions of the rack 2 and the sleeve 3 are locked under the meshing action of the transverse pin 15 and the rack 2 and the pressing action of the spring 14, the waist-shaped hole 16 is arranged on the side wall of the press button 13, the pin 17 is arranged at the positions corresponding to the adjusting block 12 and the waist-shaped hole 16, the pin 17 is inserted into the waist-shaped hole 16, the waist-shaped hole 16 and the pin 17 is used for limiting the downward pressing displacement of the press button 13, the protection spring is not plastically deformed, one side of the upper end of the adjusting block 12 is fixedly connected with the sleeve 3, when the relative positions of the rack 2 and the sleeve 3 need to be adjusted, the press button 14 and the rack 2 are compressed, the spring 14 and the rack 2 and the sleeve 3 are reset, and the relative positions of the rack 2 are reset, and the transverse pin 2 is pushed, and the relative positions are locked, and the transverse pin 2, and the clamp is pressed.
As shown in fig. 4, the vertical locking mechanism 6 comprises a fixed block 18, a knob 19 and a screw 20, the fixed block 18 is sleeved on the vertical rod 5, the lower end of the fixed block 18 is fixedly connected with the sleeve 3, the knob 19 is arranged on one side of the fixed block 18, the screw 20 is arranged at one end of the knob 19 close to the fixed block 18, the knob 19 is fixedly connected with the screw 20, the screw 20 penetrates into the fixed block 18 to contact with the vertical rod 5, the relative position of the vertical rod 5 and the sleeve 3 is locked under the pressing action of the screw 20, and the screw 20 is needed to be screwed when the relative position of the vertical rod 5 and the sleeve 3 is needed to be adjusted.
As shown in fig. 5, 9-11, the osteotomy block locking mechanism 7 comprises a pressing and fixing block 21, a button buckle 22, a second spring 23, a clamping hook 24, a connecting column 25, a clamping groove 26 and a column hole 27, wherein the pressing and fixing block 21 is arranged on the vertical rod 5, the button buckle 22 is arranged at the upper end of the pressing and fixing block 21, the second spring 23 is fixed on the pressing and fixing block 21, the lower end of the middle part of the button buckle 22 is hinged with the pressing and fixing block 21, the clamping hook 24 is arranged at the other side of the button buckle 22, one end of the pressing and fixing block 21 close to the osteotomy block 8 is provided with the connecting column 25, two connecting columns 25 are arranged at positions corresponding to the osteotomy block 8 and the clamping hook 24, the clamping groove 26 is arranged at positions corresponding to the osteotomy block 8 and the connecting column 25, the clamping hook 24 and the clamping groove 26 are clamped with each other, the two connecting columns 25 are inserted into the column hole 27 to form three-point fixation, when the osteotomy block 8 needs to be taken down after the osteotomy block 8 is completed, the button buckle 22 is pressed down, the second spring 23 is compressed and the clamping hook 24 is arranged at the opposite to the osteotomy block 8, the clamping hook 24 is locked by the clamping hook 24, and the osteotomy block 8 is lost, and the osteotomy block 8 is locked, and the osteotomy block is locked by the second spring is lost.
As shown in fig. 6, a vertical through hole 28 is formed in the middle of the vertical rod 5, the button buckle 22 passes through the vertical through hole 28, the osteotomy block locking mechanism 7 can move up and down along the vertical through hole 28, a second knob 29 is arranged on one side of the pressing block 21, a second screw 30 is arranged on one side of the second knob 29, which is close to the pressing block 21, one end of the second screw 30 is fixed on the second knob 29, the second screw 30 passes through the pressing block 21 to contact the vertical rod 5, under the action of pressing the second screw 30, the relative positions of the osteotomy block locking mechanism 7 and the vertical rod 5 can be locked, when the relative positions of the osteotomy block locking mechanism 7 and the vertical rod 5 need to be adjusted, the second screw 30 can be rotated, so that after the transverse bridge 9 is fixed on the tibia, the up and down positions of the osteotomy block 8 can still be adjusted, the osteotomy position is further accurately determined, and meanwhile, if an error is generated when the transverse bridge 9 is fixed, the error can be adjusted.
As shown in fig. 7, a sliding groove 31 is formed in the transverse bridge 9, a sliding block 32 is arranged at the upper end of the vertical rod 5, the sliding block 32 is located in the sliding groove 31, the sliding groove 31 has a certain pressing action on the sliding block 32, so that the sliding block 32 and the sliding groove 31 slide mutually to have a certain sliding resistance, a knob handle 33 is arranged at the upper end of the sliding block 32, the knob handle 33 is fixed on the sliding block 32 and used for holding and adjusting the relative positions of the transverse bridge 9 and the tibia, meanwhile, the relative positions of the vertical rod 5 and the transverse bridge 9 can be fixed, one end of the sliding groove 31 penetrates through the transverse bridge 9, the vertical rod 5 can be detached along the sliding groove 31, the sliding groove 31 has a certain pressing force on the sliding block 32, a pin 34 is arranged at the lower side of one end of the transverse bridge 9 away from the sliding groove 31, and the pin 34 is driven into the tibia, and the stability of the tibia external frame is improved.
As shown in fig. 7-8, a through groove 36 is formed in the side wall of the transverse bridge 9, the kidney-shaped hole 10 is communicated with the through groove 36, a kidney-shaped protruding block 37 is arranged at the lower end of the transverse bridge extractor 11, when the transverse bridge 9 needs to be extracted, the transverse bridge extractor 11 is inserted into the kidney-shaped hole 10, the transverse bridge extractor 11 is rotated for a certain angle, the kidney-shaped protruding block 37 is inserted into the through groove 36, an upward force is applied to the transverse bridge extractor 11, and the pin 34 is pulled out of the tibia.
Referring to fig. 9 to 11, the osteotomies 8 include a left osteotomies 38, a right osteotomies 39 and a symmetrical osteotomies 40, and the left osteotomies 38, the right osteotomies 39 and the symmetrical osteotomies 40 may be selected according to the amount of the tibial defect.
As shown in fig. 9-11, a positioning hole 35 is formed in the lower portion of the osteotomy block 8, and a positioning nail is used for penetrating through the positioning hole 35 to fix the osteotomy block 8 at the tibia osteotomy position, so that the backward inclination angle of the osteotomy block of 3 degrees is ensured, the osteotomy accords with the force line, and the bone setting amount is more accurate.
Firstly, selecting a proper osteotomy block 8, locking the osteotomy block 8 by using an osteotomy block locking mechanism 7, then holding the ankle by using an ankle holding device 1, primarily fixing the tibia external frame and the tibia of a human body, then adjusting the relative positions of a rack 2 and a sleeve 3 by using a transverse locking mechanism 4, namely adjusting the position of the sleeve 3 away from the tibia, then adjusting the whole length of the sleeve 3 and a vertical rod 5 by using a vertical locking mechanism 6, namely adapting to the tibia with different lengths, placing the osteotomy block 8 at an accurate osteotomy position, and finally inserting a cutter into a through hole of the osteotomy block 8 to osteotomy;
Firstly, selecting a proper osteotomy block 8, locking the osteotomy block 8 by using an osteotomy block locking mechanism 7, then holding the ankle by using an ankle holding device 1, primarily fixing the tibia external frame and the tibia of a human body, then adjusting the relative positions of a rack 2 and a sleeve 3 by using a transverse locking mechanism 4, namely adjusting the position of the sleeve 3 from the tibia, then adjusting the integral length of the sleeve 3 and a vertical rod 5 by using a vertical locking mechanism 6, fixing a transverse bridge 9 on the tibia, then rotating a second screw 30, adjusting the upper and lower positions of the osteotomy block 8, enabling the osteotomy block 8 to be positioned at an accurate osteotomy position, and finally inserting a cutter into a through hole of the osteotomy block 8 to osteotomy;
The principle of the osteotomy block locking mechanism 7 is that the clamping hooks 24 and the clamping grooves 26 are clamped with each other, the two connecting columns 25 are inserted into the column holes 27 to form three-point fixation, the osteotomy block 8 is very firmly fixed, when the osteotomy block 8 needs to be taken down after osteotomy is completed, the button buckle 22 is pressed, the second spring 23 is compressed, the clamping hooks 24 are tilted, the clamping effect of the clamping hooks 24 and the clamping grooves 26 is eliminated, the locking effect of the osteotomy block locking mechanism 7 on the osteotomy block 8 is eliminated, and after the osteotomy block 8 is taken down, the button buckle 22 is reset under the rebound effect of the second spring 23.
The principle of the transverse locking mechanism 4 is that the pressing button 13 is pressed, the spring 14 is compressed, the meshing effect of the transverse pin 15 and the rack 2 is eliminated, the rack 2 can be adjusted by pulling, after the adjustment is finished, the pressing button 13 is driven by the spring 14 to reset, the transverse pin 15 and the rack 2 are meshed again, and the relative positions of the rack 2 and the sleeve 3 are locked;
The principle of the vertical locking mechanism 6 is that the relative positions of the vertical rod 5 and the sleeve 3 can be adjusted by screwing the screw 20.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and the present invention is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
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| CN202011351612.7A CN112353452B (en) | 2020-11-26 | 2020-11-26 | A tibial external frame |
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| CN202011351612.7A CN112353452B (en) | 2020-11-26 | 2020-11-26 | A tibial external frame |
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| CN116407208A (en) * | 2021-12-31 | 2023-07-11 | 苏州微创关节医疗科技有限公司 | Extramedullary positioning device for tibial osteotomy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616770A (en) * | 2020-05-21 | 2020-09-04 | 天衍医疗器材有限公司 | Tibia osteotomy positioning device |
| CN111870310A (en) * | 2020-08-04 | 2020-11-03 | 北京力达康科技有限公司 | An extramedullary and intramedullary multifunctional positioning system for tibial osteotomy |
| CN214761310U (en) * | 2020-11-26 | 2021-11-19 | 天衍医疗器材有限公司 | External tibial frame |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4796943B2 (en) * | 2006-11-20 | 2011-10-19 | 日本メディカルマテリアル株式会社 | Osteotomy guide instrument for proximal tibia |
| CN206424183U (en) * | 2016-07-28 | 2017-08-22 | 北京力达康科技有限公司 | A kind of adjustable shin bone orienting device |
| CN106974700A (en) * | 2017-04-24 | 2017-07-25 | 北京大学第三医院 | A kind of proximal tibia osteotomy instrument kit |
| CN208339561U (en) * | 2017-07-26 | 2019-01-08 | 嘉思特华剑医疗器材(天津)有限公司 | Osteotomy guider is positioned outside accurate shin bone marrow |
| CN209220411U (en) * | 2018-10-17 | 2019-08-09 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of fixed separate room knee prosthesis replacement Tibial osteotomy guider |
| CN211270993U (en) * | 2019-08-07 | 2020-08-18 | 苏州微创关节医疗科技有限公司 | Osteotomy positioning device |
| CN210749385U (en) * | 2019-08-12 | 2020-06-16 | 南京市江宁医院 | Adjustable depth stop for osteotomy drill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616770A (en) * | 2020-05-21 | 2020-09-04 | 天衍医疗器材有限公司 | Tibia osteotomy positioning device |
| CN111870310A (en) * | 2020-08-04 | 2020-11-03 | 北京力达康科技有限公司 | An extramedullary and intramedullary multifunctional positioning system for tibial osteotomy |
| CN214761310U (en) * | 2020-11-26 | 2021-11-19 | 天衍医疗器材有限公司 | External tibial frame |
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