阅读说明：本技术 一种膝关节工具系统 (Knee joint tool system ) 是由 毛联甲 魏崇斌 闵信群 王健 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种膝关节工具系统,其特征在于：包括依次设置的手柄、取出器、假体试模本体,以及位于假体试模本体中部的假体试模补块；所述手柄包含有接近所述取出器一端的卡和部,所述取出器包含有接近所述手柄的连接部,以及接近所述假体试模本体的挂接部,所述假体试模本体包含有与所述挂接部对应的挂接口,以及开设于所述假体试模本体中部的豁口,所述豁口的一端延伸至所述假体试模本体的外沿处,以及位于所述豁口内沿的开槽,所述假体试模补块包含有位于所述假体试模补块外沿的凸块。本发明具采用组合设计,将假体试模与手柄、取出器配合使用,能方便快捷的将假体试模从人体中取下。(The invention discloses a knee joint tool system, which is characterized in that: the prosthesis test mould comprises a handle, an extractor, a prosthesis test mould body and a prosthesis test mould supplementing block positioned in the middle of the prosthesis test mould body, which are arranged in sequence; the handle includes and is close the card and the portion of extractor one end, the extractor includes and is close the connecting portion of handle, and is close the joint part of false body examination mould body, false body examination mould body include with the joint part that hangs that corresponds hangs the interface, and set up in the opening at false body examination mould body middle part, the one end of opening extends to the outer border department of false body examination mould body, and be located the fluting on edge in the opening, false body examination mould mends the piece and includes and is located the lug on the outer border of false body examination mould mends the piece. The invention adopts a combined design, and the prosthesis test mould is matched with the handle and the extractor for use, so that the prosthesis test mould can be conveniently and quickly taken down from a human body.)

1. A knee joint tool system, characterized by:

comprises a handle (1), an extractor (2), a prosthesis test mould body (3) and a prosthesis test mould supplementing block (4) positioned in the middle of the prosthesis test mould body (3) which are arranged in sequence;

the handle (1) comprises a clamping part (11) close to one end of the extractor (2), and the clamping part (11) is used for connecting the extractor (2);

the extractor (2) comprises a connecting part (21) close to the handle (1), the connecting part (21) is used for being connected with the clamping part (11) and a hanging part (22) close to the prosthesis test mould body (3), and the hanging part (22) is used for hanging the prosthesis test mould body (3);

the prosthesis test mould body (3) comprises a hanging interface (31) corresponding to the hanging part (22), the hanging interface (31) is used for being connected with the hanging part (22) and is provided with a notch (32) in the middle of the prosthesis test mould body (3), one end of the notch (32) extends to the outer edge of the prosthesis test mould body (3), and the notch (32) is internally used for placing the prosthesis test mould patch (4) and is provided with a slot (33) positioned on the inner edge of the notch (32);

the prosthesis test model patch (4) comprises a convex block (41) positioned on the outer edge of the prosthesis test model patch (4), the convex block (41) corresponds to the slot (33), and the convex block (41) is used for extending into the slot (33) so as to connect the prosthesis test model patch (4) with the prosthesis test model body (3).

2. A knee joint tool system according to claim 1, wherein:

the hanging part (22) comprises a cylindrical part (221) connected with the extractor (2) and a bulge (222) positioned on the side part of the cylindrical part (221);

the hanging interface (31) comprises a notch (311) communicated with the inner wall of the hanging interface (31) and a hanging table (312) positioned on the outer side of the hanging interface (31) far away from the prosthesis test mould body (3), and the outer side of the prosthesis test mould body (3) is a non-contact side of the prosthesis test mould body (3) and a bone wound surface;

when the cylindrical piece (221) extends into the hanging port (31), the protrusion (222) also extends into the notch (311), and when the protrusion (222) and the notch (311) are staggered, the extractor (2) is rotated, so that the protrusion (222) is hung on the hanging table (312) and is used for connecting the hanging part (22) with the hanging port (31).

3. A knee joint tool system according to claim 1, wherein:

the opening (32) comprises inner edge side walls (321) positioned on two sides and an inner edge top wall (322) connected with the inner edge side walls (321) on the two sides, and the inner edge top wall (322) is positioned in the middle of the prosthesis trial mold body (3);

when the prosthesis test model patch (4) is placed at the notch (32), the outer edge of the prosthesis test model patch (4) is tightly attached to the inner edge side wall (321) and the inner edge top wall (322), so that the prosthesis test model body (3) and the prosthesis test model patch (4) form a complete prosthesis test model;

4. a knee joint tool system according to claim 3, wherein: a groove (323) is formed in the joint of the inner edge side wall (321) and the inner edge top wall (322), and instruments can be inserted into the groove (323) to detach the prosthesis trial model repairing block (4) from the notch (32).

5. A knee joint tool system according to claim 1, wherein:

the lug (41) comprises an elastic piece (411), and the elastic piece (411) can be placed in the slot (33);

when the prosthesis test model patch (4) is placed at the notch (32), the convex block (41) and the elastic piece (411) enter the slot (33), and the slot (33) generates pressure on the elastic piece (411), so that the elastic piece (411) rebounds, and the prosthesis test model body (3) and the prosthesis test model patch (4) are further clamped.

6. A knee joint tool system according to claim 1, wherein: the prosthesis test model body (3) further comprises an indicating line (34) arranged on the outer edge of the prosthesis test model body (3), and the indicating line (34) is used for indicating different contour lines of the prosthesis test model body (3) so as to integrate a common prosthesis test model and a narrow prosthesis test model with corresponding models.

7. A knee joint tool system according to claim 6, wherein:

the indicating line (34) is a broken line or an arc line formed by groove-shaped bodies (34a) sunken at the outer edges of two sides of the prosthesis test mould body (3), and the number of the groove-shaped bodies (34a) is one or more;

the outer edge line of the prosthesis test mould body (3) corresponds to the contour line of a common prosthesis test mould, and the broken line or arc line formed by the groove body (34a) corresponds to the contour line of a narrow prosthesis test mould.

8. A knee joint tool system according to claim 6, wherein: the indication line (34) is a broken line or an arc line formed by convex bodies (34b) protruding out of the outer edges of two sides of the prosthesis test mould body (3), and the number of the convex bodies (34b) is one or more;

the outer line of the prosthesis test mould body (3) corresponds to the contour line of the narrow prosthesis test mould, and the broken line or arc line formed by the convex body (34b) corresponds to the contour line of the common prosthesis test mould.

9. A knee joint tool system according to any one of claims 1 to 7, wherein: the prosthesis trial model patch (4) further comprises a prosthesis trial model patch body A (42a) and an intercondylar notch A (43a) positioned in the middle of the prosthesis trial model patch body A (42a), one end of the intercondylar notch A (43a) extends to the outer edge of the prosthesis trial model patch body A (42a), and the extending direction of the intercondylar notch A (43a) is consistent with the extending direction of the notch (32).

10. A knee joint tool system according to any one of claims 1 to 7, wherein: the prosthesis trial model patch (4) comprises a prosthesis trial model patch body B (42B) and an intercondylar notch B (43B) positioned in the middle of the prosthesis trial model patch body B (42B), and the edge of the intercondylar notch B (43B) is closed.

Technical Field

The invention relates to the technical field of surgical instruments, in particular to a knee joint tool system.

Background

In knee joint replacement art, the better easy operability, reliability, the multifunctionality of operation instrument reduce operation time, reduce instrument quantity, alleviate instrument weight, promote the instrument and use experience, and then improve the operation effect and have very big influence. In the process of knee joint replacement surgery, firstly, the femoral condyle test model is installed on the joint of a patient to replace a femoral condyle prosthesis to test the surgery effect so as to ensure that the treatment can reach the expected target after the femoral condyle prosthesis is implanted into a human body. However, the problem of taking out the test model of the condyle after the test is finished is often ignored in the operation, so that the operation is not smooth; even more, need adopt the hammering mode to take off, cause secondary damage to patient easily.

In addition, the common femoral condyle prosthesis needs to be divided into a wide type and a narrow type in order to meet the joint characteristics of men and women or different groups of people; in order to meet the requirement of human anatomy, each type is divided into a left specification and a right specification so as to ensure the use of the left leg or the right leg of a patient; to meet the use of the size differences of the joints of different patients, each prosthesis specification needs to be divided into dozens of size models again. Generally, each prosthesis corresponds to a femoral condyle trial model surgical tool, which often results in that a set of knee joint replacement surgical tools may include 30 to 40 femoral condyle trial models, and too many models bring great obstacles to selecting specific tools in the operation, resulting in prolonged operation time and extremely poor tool use experience; and dividing the femoral condyle prosthesis again according to the posterior cruciate ligament retention type and the non-retention type, and doubling the number of the femoral condyle trial molds again.

In summary, the prior art has the following disadvantages:

1. the existing femur condyle test mold is inconvenient to use and operate in an operation, is difficult to take down from a patient after the installation test is finished, sometimes even needs to take down the condyle test mold in a hammering mode, and is easy to cause secondary damage to the patient;

2. the existing femur condyle test molds have single function, and the wide and narrow femur condyle test molds cannot be combined, so that the number of the single set of test molds is often doubled, the weight of the whole set of tools is increased, the screening difficulty is increased, the operation time is prolonged, and the operation experience is reduced.

3. The existing femoral condyle trial model posterior cruciate ligament retention type (CR) and posterior cruciate ligament retention type (PS) are often not separated, which also results in doubling the number of femoral condyle trial models;

meanwhile, the femoral condyle test model is generally made of stainless steel, the weight of a single piece is 150g to 300g, and the weight of the whole set of operation tools is increased greatly, so that the design and development of the femoral condyle test model with function integration and convenient operation and use and the operation tools of the components of the femoral condyle test model have important significance.

Disclosure of Invention

It is an object of the present invention to provide a knee joint tool system to solve the above problems in the background art.

In order to solve the technical problems, the invention provides the following technical scheme: a knee joint tool system, characterized by: the prosthesis test mould comprises a handle, an extractor, a prosthesis test mould body and a prosthesis test mould supplementing block positioned in the middle of the prosthesis test mould body, which are arranged in sequence; the handle comprises a card and part close to one end of the extractor, and the card and part is used for connecting the extractor; the extractor comprises a connecting part close to the handle, the connecting part is used for being connected with the card and the part, and a hanging part close to the prosthesis test mould body, and the hanging part is used for hanging the prosthesis test mould body; the prosthesis test mould body comprises a hanging interface corresponding to the hanging part, the hanging interface is used for being connected with the hanging part and is provided with a notch arranged at the middle part of the prosthesis test mould body, one end of the notch extends to the outer edge of the prosthesis test mould body, and the notch is internally provided with the prosthesis test mould supplementing block and a slot positioned at the inner edge of the notch; the prosthesis test model patch comprises a convex block positioned on the outer edge of the prosthesis test model patch, the convex block corresponds to the slot, and the convex block is used for extending into the slot so as to connect the prosthesis test model patch with the prosthesis test model body.

Preferably, the hanging part comprises a cylindrical part connected with the extractor and a bulge positioned on the side part of the cylindrical part; the hanging interface comprises a notch communicated with the inner wall of the hanging interface and a hanging table positioned at the hanging interface and far away from the outer side of the prosthesis test mould body, and the outer side of the prosthesis test mould body is a non-contact side of the prosthesis test mould body and a bone wound surface; will the cylinder stretches into when hanging in the mouth, the arch also stretches into in the notch, extremely the arch with the notch is wrong mutually, rotates the extractor, makes the arch articulate in hang the bench for with articulate portion and hang interface connection.

Preferably, the notch comprises inner edge side walls positioned at two sides and an inner edge top wall connected with the inner edge side walls at two sides, and the inner edge top wall is positioned in the middle of the prosthesis trial mold body; when the prosthesis test model patch is arranged at the notch, the outer edge of the prosthesis test model patch is tightly attached to the inner edge side wall and the inner edge top wall, so that the prosthesis test model body and the prosthesis test model patch form a complete prosthesis test model;

preferably, a groove is formed at the joint of the inner edge side wall and the inner edge top wall, and an instrument can be inserted into the groove to disassemble the prosthesis test module filling block in the notch.

Preferably, the projection comprises an elastic piece, and the elastic piece can be placed in the slot; when the prosthesis test mold repairing block is arranged at the notch, the convex block and the elastic piece enter the groove, and the groove generates pressure on the elastic piece to enable the elastic piece to rebound, so that the prosthesis test mold body and the prosthesis test mold repairing block are further clamped.

Preferably, the prosthesis test body further comprises an indicating line arranged at the outer edge of the prosthesis test body, and the indicating line is used for indicating different contour lines of the prosthesis test body, so that a common prosthesis test and a narrow prosthesis test of corresponding models are integrated.

Preferably, the indication line is a folding line or an arc line formed by groove bodies sunken at the outer edges of two sides of the prosthesis test mould body, and the number of the groove bodies is one or more; the outer edge line of the prosthesis test mould body corresponds to the contour line of a common prosthesis test mould, and the broken line or the arc line formed by the groove body corresponds to the contour line of a narrow prosthesis test mould.

Preferably, the indication line is a broken line or an arc line formed by convex bodies protruding from the outer edges of two sides of the prosthesis test model body, and the number of the convex bodies is one or more; the outer edge line of the prosthesis test mould body corresponds to the contour line of the narrow prosthesis test mould, and the broken line or the arc line formed by the convex body corresponds to the contour line of the common prosthesis test mould.

Preferably, the prosthesis trial model patch further comprises a prosthesis trial model patch body a and an intercondylar notch a located in the middle of the prosthesis trial model patch body a, one end of the intercondylar notch a extends to the outer edge of the prosthesis trial model patch body a, and the extending direction of the intercondylar notch a is consistent with the extending direction of the notch.

Or the prosthesis trial model complementing block comprises a prosthesis trial model complementing block body B and an intercondylar notch B positioned in the middle of the prosthesis trial model complementing block body B, and the edge of the intercondylar notch B is closed.

Compared with the prior art, the invention has the following beneficial effects: firstly, the tool system adopts the combined design of the prosthesis test mold, the extractor and the handle, thereby ensuring the conciseness and smoothness of the operation, saving the operation time, preventing the surgeon from taking off the condyle test mold in modes of hammering and the like, and avoiding the secondary damage to the patient; secondly, the prosthesis test model body of the tool system also comprises an indicating line arranged at the outer edge of the prosthesis test model body, so that on the basis of keeping the function of the common condyle test model, a doctor can be helped to judge whether the narrow prosthesis can be used, a whole set of narrow condyle test model or wide condyle test model is avoided being additionally manufactured, and the quantity and the weight of the whole set of surgical tools are greatly reduced; moreover, the prosthesis test model body of the tool system can be matched with the prosthesis test model supplementing block for use, so that a whole set of posterior cruciate ligament retaining (CR) femoral condyle test model and a whole set of posterior cruciate ligament non-retaining (PS) femoral condyle test model are prevented from being manufactured respectively, and the quantity and the weight of the whole set of operation tools are greatly reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of a knee joint tool system in an embodiment of the present invention;

FIG. 2 is an exploded view of a knee joint tool system in an embodiment of the present invention;

FIG. 3 is a perspective view of an extractor and prosthesis trial body in an embodiment of the invention;

FIG. 4 is an elevation view of a knee joint tool system in an embodiment of the present invention;

FIG. 5 is an elevation view taken at A-A of a knee instrument system in accordance with an embodiment of the present invention;

FIG. 6 is a perspective view of a posterior Cruciate Retaining (CR) femoral condyle trial in an embodiment of the present invention;

FIG. 7 is a perspective view of a posterior cruciate ligament unreserved (PS) femoral condyle trial in an embodiment of the present invention;

FIG. 8 is a perspective view of a prosthesis trial body in which the indicating lines are recessed in the outer edges of both sides of the prosthesis trial body according to an embodiment of the present invention;

FIG. 9 is a perspective view of a prosthesis trial body in which the indicating lines protrude from the outer edges of the prosthesis trial body at both sides thereof according to an embodiment of the present invention;

in the figure: handle-1, card and portion-11, button-111;

the extractor-2, the connecting part-21, the hanging part-22, the cylindrical part-221 and the bulge-222;

the prosthesis test mould comprises a prosthesis test mould body-3, a hanging port-31, a notch-311, a hanging table-312, a notch-32, an inner edge side wall-321, an inner edge top wall-322, a groove-323, a notch-33, an indication line-34, a groove body-34 a and a convex body-34 b;

the prosthesis test model patch-4, the bump-41, the elastic piece-411, the prosthesis test model patch body A-42a, the intercondylar notch A-43a, the prosthesis test model patch body B-42B, the intercondylar notch B-43B and the bulge-412;

femur-5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as shown in fig. 1, a preferred embodiment of the present invention is provided, and specifically, a knee joint tool system, in a knee joint replacement operation, a femoral condyle prosthesis is a bone prosthesis disposed at a distal end of a femur 5, and a femoral condyle test model is a tool for verifying whether a selected femoral condyle prosthesis is appropriate in size, so that in the knee joint replacement operation, the step of mounting the femoral condyle test model at the distal end of the femur and taking out the femoral condyle test model at the distal end of the femur is provided, and in order to facilitate mounting and removing the femoral condyle test model, the tool system discloses a handle 1, an extractor 2 and a prosthesis test model body 3 which are sequentially arranged, and when in use, the handle 1 is held by a hand, and the prosthesis test model body 3 can be removed by the extractor 2.

Further, as fig. 2, handle 1 includes card and the portion 11 that is close 2 one ends of extractor, and card and portion 11 department are provided with button 111, and extractor 2 includes connecting portion 21 that is close handle 1, stretches into in card and the portion 11 with connecting portion 21, can be with handle 1 and extractor 2 quick connection and reciprocal anchorage, presses button 111, can be with quick separation between handle 1 and the extractor 2, and the structure of specific card and portion 11 and connecting portion 21 is prior art, does not describe herein repeatedly.

Further, as shown in fig. 2, the extractor 2 further includes a hanging portion 22 close to the prosthesis test mold body 3, the prosthesis test mold body 3 includes a hanging port 31 corresponding to the hanging portion 22, the hanging port 31 is used for connecting with the hanging portion 22, when in use, the hanging portion 22 is extended into the hanging port 31, so that the extractor 2 holds the prosthesis test mold body 3, thereby facilitating the manual operation of the prosthesis test mold body 3;

specifically, as shown in fig. 3, the hanging manner of the hanging part 22 and the hanging interface 31 is as follows: the hanging part 22 comprises a cylindrical part 221 which is integrally formed with the extractor 2, and a protrusion 222 which is positioned on the side part of the cylindrical part 221, the protrusion 222 and the cylindrical part 221 form a T-shaped structure, the hanging port 31 comprises a notch 311 which is communicated with the inner wall of the hanging port 31, and a hanging table 312 which is positioned on the outer side of the hanging port 31 far away from the prosthesis test mold body 3, the outer side of the prosthesis test mold body 3 is a non-contact side of the prosthesis test mold body 3 and a bone wound surface, the hanging table 312 is an annular step and extends to the outer side edge of the prosthesis test mold body 3, namely, an irregular hole-shaped structure formed by the hanging port 31 and the hanging table 312 penetrates through the prosthesis test mold body 3, and the cleaning is convenient after the tool system is used;

during the use, as shown in fig. 4 ~ 5, stretch into hanging in the interface 31 with cylinder 221, protruding 222 also stretches into in the notch 311 along with cylinder 221 simultaneously, when protruding 222 is wrong mutually with notch 311, rotate extractor 2, drive cylinder 221 and rotate certain angle along its central axis, it no longer corresponds with notch 311 to protruding 222, thereby make protruding 222 articulate on hanging platform 312, be used for being connected coupling portion 22 and hanging interface 31, follow handle 1 department application of force after that, drive extractor 2 in proper order, prosthesis examination mould body 3 separate in the distal end of thighbone 5 can, can convenient and fast take off prosthesis examination mould body 3, the operating time is saved, make the operation safe more effective, the operation experience has been promoted.

Further, as shown in fig. 2, the knee replacement surgery needs to consider whether to retain the posterior cruciate ligament (the cruciate ligament is two ligaments connecting the femur and the tibia on the knee joint and crossing in a crisscross shape), therefore, the femoral condyle test models of a posterior cruciate ligament retention type (CR) and a posterior cruciate ligament non-retention type (PS) are correspondingly generated, which also results in doubling the number of the femoral condyle test models, in order to reduce the number of the femoral condyle test molds, the tool system also comprises a prosthesis test mold supplementing block 4 positioned in the middle of the prosthesis test mold body 3, the structure that the prosthesis test mold body 3 and the prosthesis test mold supplementing block 4 are combined into a whole is a complete femoral condyle test mold, the prosthesis test mold supplementing blocks 4 corresponding to a posterior cruciate ligament retention type (CR) and a posterior cruciate ligament non-retention type (PS) are respectively arranged in the middle of the prosthesis test mold body 3, thus obtaining the complete femur condyle test model with two forms of posterior cruciate ligament retention (CR) and posterior cruciate ligament non-retention (PS);

specifically, as shown in fig. 6 to 7, the prosthesis test mold body 3 further includes a notch 32 opened in the middle of the prosthesis test mold body 3, one end of the notch 32 extends to the outer edge of the prosthesis test mold body 3, and the notch 32 includes inner edge side walls 321 located at two sides and an inner edge top wall 322 connected to the inner edge side walls 321 at two sides, the inner edge top wall 322 is located in the middle of the prosthesis test mold body 3, when the prosthesis test mold patch 4 is placed at the notch 32, the outer edge of the prosthesis test mold patch 4 is tightly attached to the inner edge side walls 321 and the inner edge top wall 322, so that the prosthesis test mold body 3 and the prosthesis test mold patch 4 form a complete prosthesis test mold;

optionally, as shown in fig. 6, the prosthesis trial prosthesis patch 4 includes a prosthesis trial prosthesis patch body a42a, and an intercondylar notch a43a located in the middle of the prosthesis trial prosthesis patch body a42a, one end of the intercondylar notch a43a extends to the outer edge of the prosthesis trial prosthesis patch body a42a, the extension direction of the intercondylar notch a43a is consistent with the extension direction of the notch 32, the prosthesis trial prosthesis patch 4 of the structure is placed in the notch 32 to form a complete posterior cruciate ligament retention (CR) femoral condyle trial, and when the femoral trial is placed at the distal end of the femur, the retained posterior cruciate ligament can be avoided;

alternatively, as shown in fig. 7, the prosthesis trial model patch 4 comprises a prosthesis trial model patch body B42B, and an intercondylar notch B43B located in the middle of the prosthesis trial model patch body B42B, the edge of the intercondylar notch B43B is closed, the prosthesis trial model patch 4 with the structure is placed in the notch 32 to form a complete posterior cruciate ligament non-retaining (PS) femoral condyle trial model, and the posterior cruciate ligament does not need to be avoided when the femoral condyle trial model is placed at the distal end of the femur.

Further, as shown in fig. 6 to 7, in order to stably connect the prosthesis test module body 3 with the prosthesis test module supplement block 4, the prosthesis test module body 3 further includes a slot 33 located on the inner edge of the opening 32, the prosthesis test module supplement block 4 further includes a protrusion 41 located on the outer edge of the prosthesis test module supplement block 4, the protrusion 41 corresponds to the slot 33, and the protrusion 41 is used for extending into the slot 33 to connect the prosthesis test module supplement block 4 with the prosthesis test module body 3.

Specifically, as shown in fig. 6 to 7, the protrusion 41 further includes an elastic element 411, the elastic element 411 can be disposed in the slot 33, the elastic element 411 is an elastic arm integrally formed with the protrusion 41, and a protrusion 412 is disposed on a side of the elastic arm close to the slot 33, when the prosthesis test module repairing block 4 is disposed at the notch 32, the protrusion 41 and the elastic element 411 both enter the slot 33, the slot 33 generates a pressure protrusion 412 on the elastic arm, so that the elastic arm rebounds, and the prosthesis test module body 3 and the prosthesis test module repairing block 4 are further clamped.

Further, as shown in fig. 6 to 7, since the connection state between the prosthesis trial model body 3 and the prosthesis trial model patch 4 is relatively tight, in order to enable the posterior cruciate ligament retaining (CR) femoral condyle trial model and the posterior cruciate ligament non-retaining (PS) femoral condyle trial model to be replaced, a groove 323 is further formed at the connection position of the inner edge side wall 321 and the inner edge top wall 322, and an instrument can be inserted into the groove 323 to remove the prosthesis trial model patch 4 from the notch 32.

Further, as shown in fig. 2, a common femoral condyle prosthesis needs to be divided into two types of wide and narrow for meeting joint characteristics of men and women or different people, and a corresponding hip joint prosthesis test model also needs two types of wide and narrow, so that the number of the femoral condyle test models is doubled again, in order to reduce the number of the femoral condyle test models, the prosthesis test model body 3 of the tool system further comprises an indication line 34 arranged at the outer edge of the prosthesis test model body 3, and different contour lines of the prosthesis test model body 3 are indicated by the indication line 34, so that a common prosthesis test model and a narrow prosthesis test model of corresponding models are combined into a whole;

alternatively, as shown in fig. 8, the indication line 34 is a folding line formed by groove-shaped bodies 34a recessed at the outer edges of both sides of the prosthesis trial body 3, and the number of the groove-shaped bodies 34a is two; so set up, make the outer contour line of false body examination mould body 3 correspond the outline line of ordinary false body examination mould, the broken line that the channel type body 34a formed corresponds the outline line of narrow version false body examination mould.

Alternatively, as shown in fig. 9, the indication line 34 is a folding line formed by convex bodies 34b protruding from the outer edges of the two sides of the prosthesis test model body 3, and the number of the convex bodies 34b is two; so set up, make the outer contour line of prosthesis examination mould body 3 correspond the contour line of narrow version prosthesis examination mould, the broken line that protruding type body 34b formed corresponds the contour line of ordinary prosthesis examination mould.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.