CN210903221U

CN210903221U - Femur osteotomy positioning guider

Info

Publication number: CN210903221U
Application number: CN201921282225.5U
Authority: CN
Inventors: 王俊文
Original assignee: Beijing Jinchali Artificial Joint Technology Co ltd; Kuanyue Medical Equipment Suzhou Co ltd
Current assignee: BEIJING JINCHALI ARTIFICIAL JOINT TECHNOLOGY Co.,Ltd.; Kuanyue Medical Biotechnology Co., Ltd; KUANYUE MEDICAL EQUIPMENT (SUZHOU) Co.,Ltd.
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-07-03
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a thighbone cuts bone positioning guide for connect thighbone excision protection piece and distal end alignment positioner. The femur osteotomy positioning guider comprises a guider main body, a guide rod, a connecting column and a locking piece. The guide bar sets up in the bottom of director main part and is connected in order to align positioner with the distal end, and the spliced pole sets up in the lateral part of director main part in order to be connected with thighbone resection protection piece, and the retaining member sets up in the upper portion of director main part and cooperates with thighbone resection protection piece and blocks thighbone resection protection piece and osteotomy location director locking. The utility model discloses a thighbone cuts bone positioning guide with distal end alignment positioner convenient and fast ground be connected to thighbone resection protection piece on, connect accurate reliable for distal end alignment positioner can effectively carry out high-efficient location to thighbone resection protection piece, and positioning accuracy is high repeatedly, has guaranteed different patient's operation effect.

Description

Femur osteotomy positioning guider

Technical Field

The utility model relates to the field of medical equipment, concretely relates to thighbone cuts bone positioning guide ware.

Background

In the orthopedic diagnosis, many patients need to undergo osteotomy due to injury to the bones of the human body or other pathological deformities of the bones caused by various accidents.

In the case of a knee joint, a prosthetic knee joint is generally installed after a diseased portion is removed by cutting a bone of a patient. Knee replacement osteotomies generally include distal femoral osteotomies, proximal tibial osteotomies, condylar osteotomies, patellar osteotomies, and the like. Because the bone of the distal femur needs to be cut off during the operation, and the cut-off shape is matched with the needed position of the plant prosthesis.

The osteotomy positioning device in the prior art has a complex structure and great operation difficulty. Therefore, there is a great need in the art to develop a new device that is simple in structure and easy to operate, so as to improve the efficiency of the surgery.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thighbone cuts bone positioning guide for connect thighbone excision protection piece and distal end alignment positioner, in order to solve the problem that exists among the above-mentioned prior art.

In order to solve the problem, according to the utility model discloses an aspect provides a thighbone cuts bone location director for connect thighbone resection protection piece and distal end and align positioner, thighbone cuts bone location director and includes director main part, guide bar, spliced pole and retaining member, the guide bar set up in the bottom of director main part with the distal end aligns positioner and connects, the spliced pole set up in the lateral part of director main part with thighbone resection protection piece is connected, the retaining member set up in the upper portion of director main part and with thighbone resection protection piece cooperation will thighbone resection protection piece with cut bone location director locking.

In one embodiment, the front end of the locking part is provided with a locking hook, the femoral resection protection block is provided with a locking groove, and the locking hook is matched with the locking groove to lock the femoral resection positioning guide and the femoral resection protection block with each other.

In one embodiment, the retaining member comprises a retaining member main body and a spring, the locking hook is arranged at the front end of the retaining member main body, and the spring is arranged at the rear end of the retaining member main body and matched with the guider main body so as to apply elasticity to the locking hook when external force is not applied to enable the locking hook to be buckled in the locking groove.

In one embodiment, the locker is connected with the guider body through a rotation pin, and the locker rotates around the rotation pin so that the locker is clamped into or withdrawn from the locking groove.

In one embodiment, a protrusion is provided at a middle portion of the locker body, and a recess is provided at an upper surface of the guider body, and the protrusion is rotatably fixed in the recess by the rotation pin.

In one embodiment, the guider body is further provided with a spring groove, the bottom end of the spring is arranged in the spring groove, and the top end of the spring is matched with the rear end of the locking piece body.

In one embodiment, the guider body has a rectangular outline, circular arc surfaces are arranged at two ends of the guider body, the locking piece is installed along an axis perpendicular to the length direction of the guider body, and the connecting column is located below the locking hook.

In one embodiment, the upper surface of the locker body is provided with a plurality of anti-slip grooves.

In one embodiment, the rear portion of the locker body is provided with a spring hole, and the upper end of the spring is mounted in the spring hole.

In one embodiment, the guider body is provided with two guide bar mounting holes which are arranged on both sides of the spring hole and are located on the same axis as the spring hole.

The utility model discloses a thighbone cuts bone positioning guide with distal end alignment positioner convenient and fast ground be connected to thighbone resection protection piece on, connect accurate reliable for distal end alignment positioner can effectively carry out high-efficient location to thighbone resection protection piece, and positioning accuracy is high repeatedly, has guaranteed different patient's operation effect.

Drawings

FIG. 1 is a perspective view of a femoral resection protection block.

Fig. 2 is a front view of the distal alignment positioning device.

Fig. 3 is a perspective view of the femoral osteotomy positioning guide of the present invention.

Fig. 4 is a front view of the femoral resection positioning guide of the present invention.

Fig. 5 is a left side view of the femoral resection positioning guide of the present invention.

Figure 6 is a rear view of the femoral resection positioning guide of the present invention.

Fig. 7 is a right side view of the femoral resection positioning guide of the present invention.

Fig. 8 is a bottom view of the femoral resection positioning guide of the present invention.

Fig. 9 is a top view of the femoral resection positioning guide of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

In some surgical procedures, bone is cut off from the distal portion of the femur, and the cut-off shape is matched to the position of the plant prosthesis. The utility model discloses the people is through extensive and intensive research, from the angle that makes things convenient for medical worker to use, a simple structure's osteotomy locating component has been developed for the first time, this subassembly includes thighbone excision protection piece, thighbone osteotomy locating guide and distal end alignment positioner, this three part is connected through spring buckle respectively, mode detachably fixed connection such as locating pin screw thread locking connection, it is ingenious to conveniently dismantle and cooperate, can ensure that thighbone excision protection piece mounted position is correct, and ensure the uniformity that traditional chinese medical therapist used the apparatus gimmick to patient in the operation.

In the osteotomy positioning assembly, the femur resection protection block is fixed in the femur to resect the unnecessary part of the femur according to a predetermined groove shape, and the femur resection positioning guide and the distal end alignment positioning device are used as a guide rotation device to match with the parallel vertical lines. Among them, the femoral resection protection block as shown in fig. 1 is the most important part because it is required to cut off unnecessary parts according to a predetermined groove shape after it is fixed in the femur. And the other two assemblies are guiding rotating devices matched with the parallel vertical lines.

As used herein, the term "distal" refers to a portion of a femur that needs to be resected. As used herein, the terms "stand wire" and "stand wire rod" are used interchangeably to refer to a linear instrument that is used externally by a surgeon. The vertical line is used to match the angle of the femur if the instrument is installed correctly.

The thread erecting rod is a rod-shaped object matched with the far-end aligning device, one end of the thread erecting rod can be made into a pointed end which is convenient to insert into the far-end aligning device, and threads matched with the far-end aligning device can be arranged on the thread erecting rod.

The sequence in the operation is that after the vertical line rod is inserted into the far-end aligning and positioning device, the required angle is adjusted, then the femur resection protection block shown in figure 1 is connected with the femur osteotomy positioning guider of the utility model, and then the vertical line rod is inserted into the far-end aligning and positioning device (shown in figure 2).

The femoral resection block of fig. 1 is then secured to the patient's femur by the locating pins so that the surgeon can find the desired angle to resect the distal portion of the femur. The angle of the vertical line rod is matched in a rotating mode, and the right installation position of the femur resection protection block is ensured through the matching connection of the spring buttons.

In the operation process, firstly, the function of cutting the bone is ensured, screw holes at different positions are arranged in the femur resection protection block, and the instrument is adjusted, meanwhile, the accurate positioning can be realized, and the stability of the femur resection amount in the operation is ensured. Alignment pin holes and saw cuts in osteotomies are essential features in the procedure. Wherein the positional accuracy of the saw grooves is high. In order to ensure the rotation fit of the vertical line angle, the alignment positioning device of the distal end of the femoral osteotomy is utilized to ensure that the vertical line rod can rotate to a certain position. Meanwhile, the matching characteristic precision is very high, and a stable and accurate connection mode can be achieved each time. In order to ensure that the connection is quick and convenient, the utility model discloses a thighbone cuts bone positioning guide, ensures to connect the accuracy, and the cooperation precision is high. The design of the spring button is convenient to operate and quick and reliable to use.

Fig. 1 is a perspective view of a femoral resection protection block, and fig. 2 is a front view of a distal alignment fixture, as shown in fig. 1-2, for connecting a femoral resection protection block (shown in fig. 1) and a distal alignment fixture (shown in fig. 2).

The present invention of the femoral resection positioning guide is described in detail below with reference to figures 3-9. Fig. 3 is the utility model discloses the stereogram of thighbone osteotomy positioning guide, fig. 4 is the utility model discloses the main view of thighbone osteotomy positioning guide, fig. 5 is the utility model discloses the left side view of thighbone osteotomy positioning guide, fig. 6 is the utility model discloses the back view of thighbone osteotomy positioning guide, fig. 7 is the utility model discloses the right side view of thighbone osteotomy positioning guide, fig. 8 is the utility model discloses the bottom view of thighbone osteotomy positioning guide, and fig. 9 the utility model discloses the top view of thighbone osteotomy positioning guide.

As shown in fig. 3 to 9, the femoral resection positioning guide 100 includes a guide body 10, a guide rod 20, an attachment post 30, and a retaining member 40. The guide rod 20 is provided at the bottom of the guide body 10 to be connected with the distal alignment positioning means. Specifically, the guide rod 20 is inserted into the guide hole 210 of the distal alignment positioning device 200. The coupling post 30 is provided at a lateral portion of the guide body 10 to be coupled with the femoral resection protection block, and the locker 40 is provided at an upper portion of the guide body 10 and cooperates with the femoral resection protection block 300 to lock the femoral resection protection block with the resection positioning guide. Specifically, the connecting post 40 is inserted into the connecting hole 310 of the femoral resection block 300, and the locker 40 is engaged with the locking groove 320 of the femoral resection block 300.

With continued reference to fig. 3-9, the locking member 40 has a locking hook 43 at the front end thereof, and the femoral resection block has a locking slot 320 (shown in fig. 1), and the locking hook 41 cooperates with the locking slot 320 to lock the femoral resection positioning guide 100 and the femoral resection block 300 to each other.

The locker 40 includes a locker body 41 and a spring 42, and a locking hook 43 is provided at a front end of the locker body 41 and integrally formed to protrude downward from a lower surface of the locker body 41. The spring 42 is provided at the rear end of the locker body 41 and cooperates with the guide body 10 to apply elastic force to the locking hook 41 to be locked in the locking groove 320 of the femoral resection protection block 300 when external force is not applied. When an external force is applied to overcome the elastic force of the spring, the locking hook 41 can be disengaged from the locking groove 320, so that the femoral resection positioning guide 100 can be detached from the femoral resection protection block.

As shown in fig. 7, the locker 40 is coupled to the guide body 10 by the rotation pin 11, and the locker 40 is rotated about the rotation pin 11 so that the locking hooks 43 are caught in or withdrawn from the locking grooves 320 of the femoral resection protection block 300.

The locking member body 41 is provided at the middle thereof with a projection 44, and the guide body 10 is provided at the upper surface thereof with a recess (not shown) in which the projection 44 is rotatably fixed by the rotation pin 11. Therefore, the locking member forms a lever structure with the protrusion 44 as a fulcrum, and the locking member can rotate around the rotating pin 11 by applying force to the rear end of the locking member main body 41, so that the end where the locking hook 43 is located is tilted upwards.

The guide body 41 is further provided with a spring groove 12, the bottom end of the spring 42 is installed in the spring groove 12, and the top end of the spring 42 is engaged with the rear end of the locker body. Specifically, the guide body 41 has a rectangular profile, and is provided with circular arc surfaces 13 at both ends. The locker 40 is installed along an axis perpendicular to the length direction of the guide body 10, that is, the locker 40 and the guide body 10 are arranged in a perpendicular manner to each other, and the coupling post 30 is located below the locking hook 43.

The upper surface of the locker body 41 is further provided with a plurality of anti-slip grooves 45. So that the doctor can conveniently press the locking piece. A spring hole 46 is further provided at the rear of the locker body 41, and the upper end of the spring 42 is fitted into the spring hole 46. And the guider body 10 is provided with two guide bar mounting holes 14, and the two guide bar mounting holes 14 are disposed at both sides of the spring hole 12 and on the same axis as the spring hole 12.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. The utility model provides a thighbone cuts bone location director for connect thighbone resection protection piece and distal end and align positioner, a serial communication port, thighbone cuts bone location director and includes director main part, guide bar, spliced pole and retaining member, the guide bar set up in the bottom of director main part with the distal end is aligned positioner and is connected, the spliced pole set up in the lateral part of director main part with thighbone resection protection piece is connected, the retaining member set up in the upper portion of director main part and with thighbone resection protection piece cooperation will thighbone resection protection piece with cut bone location director locking.

2. The femoral resection positioning guide of claim 1, wherein the locking member has a locking hook at a front end thereof, and the femoral resection protection block has a locking groove, the locking hook cooperating with the locking groove to lock the femoral resection positioning guide and the femoral resection protection block to each other.

3. The femoral resection positioning guide according to claim 2, wherein the locking member comprises a locking member main body and a spring, the locking hook is arranged at the front end of the locking member main body, and the spring is arranged at the rear end of the locking member main body and is matched with the guide main body to apply elasticity to the locking hook when no external force is applied so as to be buckled in the locking groove.

4. A femoral resection positioning guide according to claim 3 wherein the retaining member is connected to the guide body by a rotation pin about which the retaining member rotates to allow the retaining member to snap into or out of the retaining slot.

5. The femoral resection positioning guide of claim 4 wherein the retaining member body has a projection at a middle portion thereof and the guide body has a recess in an upper surface thereof, the rotation pin rotatably securing the projection in the recess.

6. The femoral resection positioning guide of claim 3 wherein the guide body further comprises a spring slot, the bottom end of the spring being mounted in the spring slot, the top end of the spring engaging the rear end of the retaining member body.

7. The femoral resection positioning guide of claim 1, wherein the guide body has a rectangular profile and is provided with circular arc surfaces at both ends, the locking member is installed along an axis perpendicular to a length direction of the guide body, and the connection post is located below the locking hook.

8. A femoral resection positioning guide according to claim 3 wherein the upper surface of the retaining member body is provided with a plurality of anti-slip grooves.

9. A femoral resection positioning guide according to claim 3 wherein the rear portion of the retaining member body is provided with a spring aperture in which the upper end of the spring is mounted.

10. A femoral resection positioning guide according to claim 9, wherein the guide body is provided with two guide rod mounting holes disposed on either side of and on the same axis as the spring hole.