CN205758655U - Osteotomy guider on a kind of condyle of humerus - Google Patents

Abstract

The utility model relates to a humeral supracondylar osteotomy guide, which comprises a fixed seat and a movable seat for being installed on the humerus, a fixed-angle osteotomy reference structure is arranged on the fixed seat, and a fixed-angle osteotomy reference structure is arranged on the movable seat. There is a corner osteotomy reference structure, and the fixed-angle osteotomy reference structure is matched with the corner osteotomy reference structure to form a preoperative planned osteotomy reference edge; the utility model solves the problem that it is difficult to complete the operation according to the preoperative plan Precise correction of osteotomy problems.

Description

A humeral supracondylar osteotomy guide

technical field

The utility model relates to a humerus osteotomy device, in particular to a humerus supracondylar osteotomy guide.

Background technique

Cubitus valgus and cubitus varus are very common deformities among adolescents in my country. Most patients need supracondylar humeral osteotomy due to appearance deformity, ulnar nerve symptoms or limited elbow joint motion. At present, the surgical method of osteotomy is very mature, and the angle and length of the osteotomy block can be accurately calculated by relying on imaging technology. Nevertheless, there are still a considerable proportion of patients with poor postoperative results (undercorrection, overcorrection) or complications of varying degrees (elbow joint hyperextension, elbow flexion deformity, or ulnar nerve injury). A short-term follow-up of 117 cases from Beijing Jishuitan Hospital showed that 60-70% of patients with elbow deformities had under-correction or "over-correction" problems after surgery.

The reason is that when most doctors complete this type of operation, they rely more on their previous experience to judge the effectiveness of the osteotomy during the operation, and it is difficult to complete the precise osteotomy according to the preoperative plan.

Contents of the invention

The purpose of the utility model is to solve the problem that it is difficult to complete precise osteotomy according to the preoperative plan during the current operation.

In order to solve the above problems, the utility model proposes a humeral supracondylar osteotomy guide, which includes a fixed seat and a movable seat for being installed on the humerus, and a fixed-angle osteotomy reference structure is arranged on the fixed seat. The movable base is provided with a reference structure for osteotomy at an angle, and the reference structure for osteotomy at a fixed angle is matched with the reference structure for osteotomy at a fixed angle to form a reference edge for osteotomy for preoperative planning and correction.

Further, the fixed-angle osteotomy reference structure includes an osteotomy fixed-side block fixedly connected to the fixed seat, and a fixed-side reference part for osteotomy reference is formed on the osteotomy fixed-side block; the corner The osteotomy reference structure includes an osteotomy swivel block, the osteotomy swivel block is rotatably connected to the movable seat, and a swivel reference portion for osteotomy reference is formed on the osteotomy swivel block; The two osteotomy reference sides formed by the side reference part and the turning side reference part respectively correspond to the correction vertical line and the correction oblique line; the fixed side reference part and the turning side reference part form two osteotomy reference sides. The rotationally connected osteotomy revolving block can realize the continuous angle change of the humerus correction, so as to ensure the consistency of the corrected osteotomy angle and the preoperative planned osteotomy angle.

Further, it also includes a positioning structure for cooperating and positioning the fixed side reference part and the rotation side reference part, the positioning structure includes a positioning part extending along the fixed side osteotomy direction on the fixed side reference part; The positioning rod on the side reference part slides along the osteotomy direction of the turning side, and the positioning rod that slides and extends matches with the positioning part, and the matching position is the intersection of the two osteotomy sides. In order to ensure that the intersection point of the two osteotomy sides can be seen intuitively, the slidingly connected positioning rod can realize the extension of the rotating side reference part and the fixed side reference part when the rotating side reference part is at different inclination angles. , the intersection point of the two osteotomy sides is directly observed, so as to realize the installation position of the movable seat relative to the fixed seat by presetting the position of the intersection point.

Further, the extending intersection of the two osteotomy sides is outside the outline of the humerus or on the edge of the outline. Commonly, the intersection point of the two osteotomy sides is on the outer contour of the humerus, but in some special cases, there will be long humerus and cubitus varus or cubitus valgus, which needs to be cut in length, so that the intersection point needs to be Extends beyond the contour of the humerus.

Further, a rotation angle measurement structure is provided between the osteotomy rotation block and the movable seat, the rotation angle measurement structure includes a pointer and an angle scribe line, and the pointer is fixedly connected or marked on the osteotomy rotation block, The angle marking lines are distributed on the rotation center circle of the osteotomy turning block, and the pointer and the angle marking lines cooperate to reflect and measure the rotation angle of the turning side reference part. The rotation angle measurement structure can conveniently and directly adjust the inclination angle of the osteotomy rotation block, and meanwhile, the structure is simple and the operation is convenient.

Further, a locking structure is provided between the movable seat and the osteotomy turning block, and the locking structure is used for locking and fixing the osteotomy turning block after the preset rotation angle; the locking structure can It is locked and fixed with the preset inclination angle of the osteotomy turning block during the operation.

Further, the locking structure includes an adjustment bolt and an arc-shaped hole provided on the osteotomy turning block, the arc center of the arc-shaped hole is the rotation center of the osteotomy turning block, and the adjusting Bolts pass through the arc-shaped holes to fix the osteotomy turning block on the movable seat, and the structure is simple.

Further, the fixed seat and the movable seat are respectively provided with a fixed seat installation surface and a movable seat installation surface which cooperate with the outer surface of the humerus. Increase the contact area and increase the stability during installation.

Further, a fixed-angle seat hole and a corner seat hole are respectively opened on the fixed seat and the movable seat, and the fixed seat and the movable seat are fixed on the fixed-angle seat hole and the corner seat hole. on the humerus. The relative positional relationship among the humerus, the fixed seat and the movable seat can be fixed through the fixed-angle seat hole and the swivel-angle seat hole.

Further, the turning edge reference part and the fixed edge reference part are edges or planes; edges or planes can form reference edges in the osteotomy process, and can guide the osteotomy direction of the osteotomy tool, so as to ensure Accurate osteotomy angle.

The beneficial effect of the utility model is: the common method of humerus correction is to correct by resecting part of the humerus on the humerus according to the angle of cubitus cubitus varus or cubitus valgus. During the osteotomy process, it is necessary to follow the established correction angle Perform osteotomy. There are two traditional corrective osteotomy lines, one is the corrective vertical line, the corrective vertical line is perpendicular to the direction of humerus extension, and the other is the corrective oblique line, the corrective oblique line intersects with the corrective vertical line, and the intersection point is on the edge of the humerus. Different patients have different osteotomy angles to be corrected. The fixed-angle reference structure on the fixation base is used to compare and form the osteotomy reference side corresponding to the correction vertical line, and the corner osteotomy reference structure is used to compare the angle corresponding to the correction oblique line. Osteotomy reference edge; in this way, during the implementation process, the osteotomy is performed by referring to the fixed-angle osteotomy reference structure and the rotational-angle osteotomy reference structure, which can achieve higher accuracy than manual visual inspection or osteotomy based on experience. Of course, the osteotomy reference side formed by the fixed-angle osteotomy reference structure on the fixing base is not necessarily perpendicular to the extension direction of the humerus, and may also be a reference side forming other angles.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:

Fig. 1 is the overall installation structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the cooperative structure of the fixed side reference part and the turning side reference part of the utility model;

In the figure: 1-humerus; 2-fixation seat, 21-fixed angle seat hole, 22-osteotomy and fixed side block, 221-positioning part, 222-fixed side reference part, 24-fixing bolt, 25-fixing seat mounting surface ;3-movable seat, 31-corner seat hole, 32-osteotomy turning block, 321-positioning rod, 322-turning edge reference part, 34-revolving pin, 35-movable seat mounting surface, 36-adjusting bolt, 37 -hands, 38-angle engraved lines, 39-curved bar holes.

detailed description

Referring to Fig. 1, the utility model humerus supracondylar osteotomy guide comprises fixed seat 2, movable seat 3, osteotomy fixed side block 22 and osteotomy turning side block 32, and osteotomy fixed side block 22 is fixedly connected on by fixing bolt 24 On the fixed seat 2 , the osteotomy turning block 32 is rotatably connected to the movable seat 3 through a rotating pin 34 .

On the fixed seat 2, a fixed seat installation surface 25 matching the outer surface of the humerus 1 is formed. When in use, the contact installation area between the fixed seat 2 and the humerus 1 is increased through the fixed seat installation surface 25, and at the same time, on the fixed seat 2 A fixed-angle seat hole 21 is opened, and the screw is screwed into the humerus 1 after passing through the fixed-angle seat hole 21, so that the fixed seat 2 is fixed on the humerus 1 . A fixed side reference part 222 is formed on the osteotomy fixed side block 22 , and during the osteotomy process, the osteotomy tool cuts off the humerus 1 according to the direction of the fixed side reference part 222 . The fixed edge reference portion 222 can generally be an edge or a plane, and the humerus 1 cuts off the humerus with reference to the extension of the edge or plane.

The movable seat 3 is formed with a movable seat mounting surface 35 that matches the outer surface of the humerus 1. When in use, the contact installation area between the movable seat 3 and the humerus 1 is increased through the movable seat mounting surface 35. At the same time, a movable seat 3 is provided with The corner seat hole 31 is screwed into the humerus 1 through the screw through the corner seat hole 31, and the movable seat 3 is fixed on the humerus 1. A turning edge reference portion 322 is formed on the osteotomy turning edge block 32 . During the osteotomy process, the osteotomy tool cuts off the humerus 1 according to the orientation of the turning edge reference portion 322 . The turning edge reference portion 322 may generally be an edge or a plane, and the humerus 1 is cut off with reference to the extension of the edge or plane.

During use, the osteotomy reference side is formed by matching the turning side reference part 322 and the fixed side reference part 222 , and the osteotomy tool is used to perform osteotomy correction on the humerus 1 by referring to the extension direction of the osteotomy reference side. The fixed edge reference part corresponds to the correction vertical line, and the turning edge reference part corresponds to the correction oblique line.

However, based on the current clinical experience, the preoperative osteotomy line is two straight lines, one of which is the correction vertical line, the extension direction of the correction vertical line is perpendicular to the extension direction of the humerus 1, and the other is the correction oblique line , the corrective oblique line intersects the corrective vertical line, and the intersection of the corrective oblique line and the corrective vertical line is on the edge of humerus 1. There are differences in the angles that current patients need to be corrected, so what is reflected on the humerus supracondylar osteotomy guide of the present invention is that it is necessary to rotate the osteotomy turning block 32 to adjust the turning side reference part 322 and the fixed side reference part 222 angle between.

In use, the osteotomy reference side formed by the projection of the turning side reference part 322 on the humerus 1 corresponds to the correction oblique line; the osteotomy reference side formed by the fixed side reference part 222 on the humerus 1 corresponds to the correction vertical line.

Referring to FIG. 2 , in order to determine that the extended intersection point of the rotating side reference part 322 and the fixed side reference part 222 is on the edge of the humerus 1 , the rotating osteotomy turning block 32 and the osteotomy fixing side block 22 are positioned through a positioning structure. The positioning fit structure includes a positioning rod 321 and a positioning portion 221 that abut against each other. The positioning rod 321 is slidably connected to the turning edge reference portion 322 , and its sliding direction is parallel to the cut-off reference edge corresponding to the turning edge reference portion 322 . The positioning part 221 is formed extending along both sides of the truncated reference side of the fixed-side reference part 222 , and is parallel to the corresponding osteotomy reference side of the fixed-side reference part 222 . By sliding the positioning rod 321 , the abutting position of the positioning rod 321 and the positioning portion 221 is adjusted, so that the projection of the abutting position is located on the edge of the humerus 1 .

In order to conveniently measure and adjust the rotation angle value of the rotating edge reference part 322, a rotating angle measuring structure is provided between the osteotomy rotating edge block 32 and the movable seat 3. The rotating angle measuring structure includes a pointer 37 and an angle marking line 38, and the pointer 37 Fixedly connected to the osteotomy turning edge block 32, the angle marking line 38 is distributed on the movable seat 3 centered on the turning pin 34, and the measuring turning edge reference part 322 is reflected by the rotation angle of the pointer 37 relative to the angle marking line 38 of rotation angle.

In order to prevent the preset angle of the turning edge reference part 322 from changing, a locking structure is provided between the movable seat 3 and the osteotomy turning block 32, and the locking structure includes an arc-shaped hole set on the osteotomy turning block 32 39 and adjusting bolt 36, the arc center of the arc bar hole 39 is the rotation center of the revolving pin 34, and the adjusting bolt 36 passes through the arc bar hole 39, and the osteotomy turning block 32 is pressed and fixed on the movable seat 3.

The above scheme can realize corrective osteotomy for cubitus valgus and cubitus varus, and the realization method is mainly through clockwise and counterclockwise rotation of the osteotomy turning block 32 .

Claims (10)

1. A humerus supracondylar osteotomy guide, characterized in that it includes a fixed seat (2) and a movable seat (3) for being installed on the humerus (1), and the fixed seat (2) is provided with A reference structure for fixed-angle osteotomy, a reference structure for angular osteotomy is provided on the movable seat (3), and the reference structure for fixed-angle osteotomy matches the reference structure for angular osteotomy to form an osteotomy for preoperative planning correction Reference edge. 2. The humeral supracondylar osteotomy guide according to claim 1, characterized in that, the reference structure for fixed-angle osteotomy includes an osteotomy-fixed side block (22) fixedly connected to the fixed seat (2) , a fixed edge reference part (222) for osteotomy reference is formed on the osteotomy fixed edge block (22); the corner osteotomy reference structure includes an osteotomy edge block (32), and the osteotomy rotary The side block (32) is rotatably connected to the movable seat (3), and a turning side reference part (322) for osteotomy reference is formed on the osteotomy turning side block (32); the fixed side reference part ( 222) and the two osteotomy reference sides formed by the turning side reference part (322) respectively correspond to the correction vertical line and the correction oblique line. 3. The humeral supracondylar osteotomy guide according to claim 2, further comprising a positioning structure for coordinating and positioning the fixed side reference part (222) and the turning side reference part (322), The positioning structure includes a positioning part (221) extending along the fixed side osteotomy direction on the fixed side reference part (222); and a positioning rod (321) sliding on the turning side reference part (322) along the turning side osteotomy direction ), the slidingly extending positioning rod (321) abuts and matches with the positioning part (221), and the abutting and matching place is the intersection of the two osteotomy sides. 4. The humeral supracondylar osteotomy guide according to claim 3, characterized in that, the extended intersection point of the two osteotomy sides is outside the outline of the humerus (1) or on the edge of the outline. 5. The humerus supracondylar osteotomy guide as claimed in claim 2, characterized in that a rotation angle measuring structure is provided between the osteotomy turning block (32) and the movable seat (3), and the rotation angle The measuring structure includes a pointer (37) and an angle score line (38), the pointer (37) is fixedly connected or marked on the osteotomy turning block (32), and the angle scoring line (38) is distributed on the osteotomy turning edge block (32). On the center circumference of the rotation of the side block (32), the pointer (37) and the angle marking line (38) cooperate to reflect and measure the rotation angle of the rotation side reference part (322). 6. The humeral supracondylar osteotomy guide according to claim 5, characterized in that, a locking structure is arranged between the movable seat (3) and the osteotomy turning block (32), and the locking The structure is used for locking and fixing the osteotomy turning block (32) after the preset rotation angle. 7. The humerus supracondylar osteotomy guide according to claim 6, characterized in that, the locking structure comprises an adjusting bolt (36) and an arc-shaped bar provided on the osteotomy turning block (32) hole (39), the arc center of the arc-shaped bar hole (39) is the rotation center of the osteotomy turning block (32), and the adjusting bolt (36) passes through the arc-shaped bar hole (39) to adjust the osteotomy The turning block (32) is fixed on the movable seat (3). 8. The humeral supracondylar osteotomy guide according to claim 1, characterized in that, on the fixed seat (2) and the movable seat (3), there are respectively provided with the outer surface of the humerus (1). Fixed seat mounting surface (25) and movable seat mounting surface (35). 9. The humeral supracondylar osteotomy guide according to claim 2, characterized in that, fixed-angle seat holes (21) and corners are opened on the fixed seat (2) and the movable seat (3) respectively. A seat hole (31), through which the fixed-angle seat hole (21) and the swivel-angle seat hole (31) fix the fixed seat (2) and the movable seat (3) on the humerus. 10. The humeral supracondylar osteotomy guide according to claim 2, characterized in that, the turning edge reference part (322) and the fixed edge reference part (222) are edges or planes.