CN213217921U - Single-condyle joint replacement femoral prosthesis holding and striking device - Google Patents

Abstract

The utility model discloses a single condyle joint replacement femoral prosthesis holding and hitting device, including the remote end beat the holder of ware, cross-connection and pincers appearance, the holder include the handle and the front end synapse that opens and shuts through the handle drive, the handle include left handle and right handle, the front end synapse touch including left synapse and right synapse, when holding tightly the handle and making left handle and right handle be close to each other, the handle drive left synapse and right synapse fold inwards in order to realize holding, when loosening the handle and making left handle and right handle keep away from each other, the handle drive left synapse and right synapse separate from each other; the remote drilling device is fixedly arranged between the left synapse and the right synapse; the top of the far-end driver is provided with a groove matched with the grinding column; the cross-link is connected to the end of the handle and is located between the left handle and the right handle.

Description

Single-condyle joint replacement femoral prosthesis holding and striking device

Technical Field

The utility model relates to a medical tool field, concretely relates to single condyle joint replacement femoral prosthesis is controlled and is hit beating ware.

Background

Currently, in unicondylar joint replacement (UKA) using the Oxford system of Zimmer-Biomet, the manipulation of the femoral side is very complicated, and in the steps of osteotomy, trial, prosthesis setting, etc., it is necessary to apply a punch to press the osteotomy guide plate, trial prosthesis, and real prosthesis so that the osteotomy guide plate, trial prosthesis, and real prosthesis are applied to the femoral osteotomy surface. In the current instruments available from Zimmer-Biomet, a femoral side impactor is used to accomplish this, but there is no suitable impactor for the femoral grinding post. The femur grinding column is placed in the groove of the femur, and then the depth of the grinding drill is limited by the length of the grinding column, so that the grinding column plays a role of cutting the distal end of the femur, and the grinding column is required to be tightly attached to the surface of the femur. Because of the limited depth of action of the grinding cylinder, its surface cannot be hit directly with a hammer, otherwise deformations occur which would affect the osteotomy precision. However, the existing hitting device has no proper groove when hitting, so that the hitting is very difficult (slipping can occur). The design of the utility model is an original intention of designing a polishing device suitable for a grinding column.

On the other hand, in the UKA operation of the Oxford system, the trial of the femoral prosthesis and the placement of the actual prosthesis are performed by holding the prosthesis. It is known that in surgical operations, in particular in orthopaedic operations, in order to avoid infection to the maximum extent, the principle of "contactless" (No Touching) should be followed, i.e. the use of fingers should be avoided when operating with instruments. Also, because the UKA incision is small, handheld operation sometimes becomes difficult. Therefore, designing an instrument capable of holding the femoral prosthesis is also a design objective of the present invention.

In summary, the prior hammering device can only complete the hammering of the osteotomy guide plate, the test mold and the prosthesis, but cannot complete the hammering of the grinding drill. In addition, no holder for femoral prostheses is available at present.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem that exists among the prior art, the utility model provides a single condyle joint replacement femoral prosthesis is controlled and is hit the ware, and the technical problem that solve includes how to design a new ware of beating, on the basis of beating femoral examination mould, false body and cut the bone baffle, can also effectually strike the femoral grinding post, still combined the characteristics of holder simultaneously, can control femoral examination mould and false body, avoid bare-handed operation, conveniently lay.

In order to solve the above problems, the present invention provides a single condylar joint replacement femoral prosthesis holding and striking device, including a distal end holding device, a transverse connection and a clamp-like holding device, the holding device including a handle and a front synapse opened and closed by the handle, the handle including a left handle and a right handle, the front synapse including a left synapse and a right synapse, when the handle is tightly held and the left handle and the right handle are close to each other, the handle drives the left synapse and the right synapse to be inwardly folded for holding, and when the handle is loosened and the left handle and the right handle are far away from each other, the handle drives the left synapse and the right synapse to be separated from each other; the remote drilling device is fixedly arranged between the left synapse and the right synapse; the top of the far-end driver is provided with a groove matched with the grinding column; the cross-link is connected to the end of the handle and is located between the left handle and the right handle.

The hitting surface at the top of the distal hitting device is designed to be a curved surface having a curvature that accommodates the femoral prosthesis.

The distal punch is made of polyethylene material.

Preferably, one end of the cross link is rotatably connected to the end of the left handle through a cross link hinge, and the other end of the cross link is connected to the end of the right handle in an openable and closable manner through a buckle.

Alternatively, one end of the cross link is rotatably connected to the end of the right handle through a cross link hinge, and the other end of the cross link is openably and closably connected to the end of the left handle through a buckle.

Preferably, an elastic support rod is further arranged between the left handle and the right handle.

Further preferably, the left handle and the right handle are rotatably connected together through a handle hinge; the top of the left handle is integrally formed with a left connecting rod, and the top of the right handle is integrally formed with a right connecting rod; the left synapse is disposed on top of a left holding arm; the right synapse is disposed at a top of a right holding arm; the left holding arm and the right holding arm are rotatably connected together through a holding hinge; the bottom of the left holding arm is integrally formed with a left holding rod; the bottom of the right holding arm is integrally formed with a right holding rod; the left connecting rod and the left holding rod are rotatably connected together through a left connecting rod hinge; the right connecting rod and the right holding rod are rotatably connected together through a right connecting rod hinge.

The utility model discloses realize following beneficial effect:

(1) single condyle joint replacement thighbone false body control and hit the beating ware and can hit the bone cutting baffle, thighbone examination mould and thighbone false body in the UKA and hit and beat, can also conveniently hit simultaneously and hit the thighbone grinding post effectively.

(2) Single condyle joint replacement thighbone false body control and hit and beat the ware and can control thighbone examination mould or thighbone false body, lay in carrying out the art, avoided bare-handed operation.

(3) Single condyle joint replacement femoral prosthesis control and hit the ware and will hold the ware and combine with hitting the ware, reduced the apparatus and prepared and the apparatus change in the art.

Drawings

Fig. 1 is a schematic structural view of a single condylar joint replacement femoral prosthesis holding and striking device according to the present invention.

Detailed Description

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1, the gripping and striking device for a unicondylar joint replacement femoral prosthesis of the present invention comprises a distal striking device 1, a transverse connector 3 and a clamp-like holder, wherein the holder comprises a handle 4 and a front synapse 5 opened and closed by the handle, the handle 4 comprises a left handle 41 and a right handle 42, the front synapse 5 comprises a left synapse 54 and a right synapse 55, when the handle 4 is gripped and the left handle 41 and the right handle 42 are made to approach each other, the handle 4 drives the left synapse 54 and the right synapse 55 to fold inward for gripping, and when the handle 4 is released and the left handle 41 and the right handle 42 are made to move away from each other, the handle 4 drives the left synapse 54 and the right synapse 55 to move apart left and right; the remote drilling device 1 is fixedly arranged between the left synapse 54 and the right synapse 55; the top of the far-end driver 1 is provided with a groove 2 matched with the grinding column; the cross-piece 3 is connected to the end of the handle 4 between a left handle 41 and a right handle 42.

The driver surface at the top of the distal driver 1 is designed as a curved surface having an arc that fits the femoral prosthesis.

The distal end driver 1 is made of polyethylene material and protects a metal test die, a bone cutting guide plate, a real prosthesis or a grinding column during striking.

Preferably, one end of the cross link 3 is rotatably connected to the end of the left handle 41 through a cross link hinge 31, and the other end of the cross link 3 is openably and closably connected to the end of the right handle 42 through a buckle 32.

Although the embodiment shown in fig. 1 is shown in which the cross-link hinge 31 is provided at the end of the left handle 41, it is fully understood by those skilled in the art that, as an alternative embodiment, one end of the cross-link 3 may be rotatably connected to the end of the right handle 42 by the cross-link hinge 31, and the other end of the cross-link 3 may be openably connected to the end of the left handle 41 by the snap 32.

Preferably, an elastic support rod 6 is further arranged between the left handle 41 and the right handle 42.

Further preferably, the left handle 41 and the right handle 42 are rotatably connected together through a handle hinge 45; a left connecting rod 43 is integrally formed at the top of the left handle 41, and a right connecting rod 44 is integrally formed at the top of the right handle 42; the left synapse 54 is disposed at the top of the left holding arm 51; the right synapse 55 is disposed at the top of the right holding arm 52; the left holding arm 51 and the right holding arm 52 are rotatably connected together by a holding hinge 53; a left holding rod 46 is integrally formed at the bottom of the left holding arm 51; a right holding rod 47 is integrally formed at the bottom of the right holding arm 52; the left connecting rod 43 and the left holding rod 46 are rotatably connected together through a left connecting rod hinge 48; the right link 44 and the right grip lever 47 are rotatably connected to each other by a right link hinge 49.

Single condyle joint replacement thighbone false body control and hit the ware of beating on ware and the top of will pincers appearance beat the ware (being the distal end beat the ware 1) and combine together, the distal end is beaten the ware and is made by polyethylene material, protects metal examination mould, cuts bone baffle, true false body or grinding post when beating, beats the ware face and designs into the curved surface, adapts to thighbone false body's radian. A recess 2 is hollowed out of the face of the beater, and is specially matched with the grinding column to strike the grinding column.

The transverse connection 3 has a certain width, and when the transverse connection is buckled, the transverse connection can be struck by a hammer to play a role in pressurizing the beater. Specifically, when the cross bar 3 is fixed between the left handle 41 and the right handle 42 by the clip 32, an external force is applied to the distal end driver 1 by hammering the cross bar, thereby achieving a hammering effect. Because the grinding column is not directly hit by a hammer, the grinding column is not deformed to influence the bone cutting precision.

When the clasp 32 is opened, the cross link 3 can rotate around the cross link hinge 31, so that the left handle 41 and the right handle 42 are released, and the left handle 41 and the right handle 42 can be gripped at the moment, or the left handle 41 and the right handle 42 can be released, and the operation is similar to that of a vice.

When connecting 3 and fixing between left handle 41 and right handle 42 through buckle 32, left handle 41 and right handle 42 can't open and shut, at this moment unicondylar joint replacement femoral prosthesis control and hit the ware and only can be used to hit as hitting the ware and hit and beat. When the buckle 32 is opened, the transverse connection is opened, and the synapse at the front end can be closed by gripping the handle, so that the function of holding the prosthesis is achieved.

Specifically, when the handle 4 is gripped and the left and right grips 41 and 42 are brought close to each other, the left and right grips 41 and 42 overcome the elastic resistance of the elastic support bar 6, and the left and right links 43 and 44 are separated to the left and right sides as the left and right grips 41 and 42 are rotated about the grip hinge 45; meanwhile, the left connecting rod 43 drives the left holding rod 46 to move leftwards, and the right connecting rod 44 drives the right holding rod 47 to move rightwards, so that the left holding rod 46 and the right holding rod 47 are also separated to the left and the right; since the left grip arm 51 and the right grip arm 52 are rotatably connected together by the grip hinge 53, the bottom of the left grip arm 51 is integrally formed with the left grip lever 46; the bottom of the right holding arm 52 and the right holding rod 47 are integrally formed; when the left holding rod 46 moves leftwards, the left holding arm 51 is driven to rotate clockwise (namely, move rightwards) around the holding hinge 53, when the right holding rod 47 moves rightwards, the right holding arm 52 is driven to rotate anticlockwise (namely, move leftwards) around the holding hinge 53, so that the left synapse 54 and the right synapse 55 are driven to fold inwards to be held, the left synapse 54 and the right synapse 55 hold the prosthesis, the prosthesis is placed in the femur, after the prosthesis is placed in a position, the left handle 41 and the right handle 42 are released, the left handle 41 and the right handle 42 are separated from each other by the elastic force of the elastic supporting rod 6, the left synapse 54 and the right synapse 55 are correspondingly separated from each other, at the moment, the transverse connection 3 is fixed between the left handle 41 and the right handle 42 through the buckle 32, the groove 2 at the top of the distal end beater 1 is aligned with the grinding column, the transverse connection 3 is beaten by a hammer, and the beating force of the transverse connection, thereby realizing striking in place.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (7)

1. A single condylar joint replacement femoral prosthesis holding and striking device is characterized by comprising a far-end striking device, a transverse connection and a clamp-like holding device, wherein the holding device comprises a handle and a front synapse which is driven to open and close by the handle, the handle comprises a left handle and a right handle, the front synapse comprises a left synapse and a right synapse, when the handle is held tightly and the left handle and the right handle are close to each other, the handle drives the left synapse and the right synapse to fold inwards to realize holding, and when the handle is released and the left handle and the right handle are far away from each other, the handle drives the left synapse and the right synapse to separate left and right; the remote drilling device is fixedly arranged between the left synapse and the right synapse; the top of the far-end driver is provided with a groove matched with the grinding column; the cross-link is connected to the end of the handle and is located between the left handle and the right handle.

2. The unicondylar joint replacement femoral prosthesis holder and striker of claim 1, wherein the driver surface of the top portion of the distal driver is configured as a curved surface having a curvature that accommodates the femoral prosthesis.

3. The unicondylar joint replacement femoral prosthesis holder and striker of claim 1, wherein the distal striker is made of polyethylene material.

4. The unicondylar joint replacement femoral prosthesis holder and striker of claim 1, wherein one end of the cross link is rotatably connected to the end of the left handle by a cross link hinge and the other end of the cross link is openably connected to the end of the right handle by a snap fit.

5. The unicondylar joint replacement femoral prosthesis holder and striker of claim 1, wherein one end of the cross link is rotatably connected to the end of the right handle by a cross link hinge and the other end of the cross link is openably connected to the end of the left handle by a snap fit.

6. The unicondylar joint replacement femoral prosthesis holder and impactor of claim 1 wherein a flexible strut is further provided between said left and right handles.

7. The unicondylar joint replacement femoral prosthesis holder and striker of claim 1, wherein the left and right handles are rotatably connected together by a handle hinge; the top of the left handle is integrally formed with a left connecting rod, and the top of the right handle is integrally formed with a right connecting rod; the left synapse is disposed on top of a left holding arm; the right synapse is disposed at a top of a right holding arm; the left holding arm and the right holding arm are rotatably connected together through a holding hinge; the bottom of the left holding arm is integrally formed with a left holding rod; the bottom of the right holding arm is integrally formed with a right holding rod; the left connecting rod and the left holding rod are rotatably connected together through a left connecting rod hinge; the right connecting rod and the right holding rod are rotatably connected together through a right connecting rod hinge.

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