CN217244387U

CN217244387U - Osteotomy system and osteotomy measuring device thereof

Info

Publication number: CN217244387U
Application number: CN202220023111.4U
Authority: CN
Inventors: 付长帅; 孙延东; 黄欢欢
Original assignee: Suzhou Microport Orthorecon Co Ltd
Current assignee: Suzhou Microport Orthorecon Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-08-23
Anticipated expiration: 2032-01-06

Abstract

The utility model relates to an osteotomy system and an osteotomy measuring device thereof, which comprises a measuring piece, a base, a pressing piece and a locking mechanism, wherein the base is provided with a first mounting part and a second mounting part; the pressing piece is provided with a connecting rod part and a pressure head part, and the connecting rod part movably penetrates through the first mounting part; locking mechanical system includes retaining member and linkage, and the retaining member rotates with the base to be connected with connecting rod portion through the linkage, when the retaining member will cut the bone plate and lock in first installation department, the retaining member drives connecting rod portion through the linkage and removes, so that pressure head portion locks in the second installation department with the guide part, the utility model discloses a cut bone system and cut bone measuring device thereof, when the retaining member will cut the bone plate and lock in the first installation department of base, can drive the connecting rod portion that compresses tightly the piece through the linkage and remove, make the pressure head portion that compresses tightly the piece lock in the second installation department with the guide part, thereby simplify the locking operation, improve the simple operation nature, can avoid cutting the bone position deviation moreover.

Description

Osteotomy system and osteotomy measuring device thereof

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an osteotomy system and osteotomy measuring device thereof.

Background

In the unicondylar replacement surgery, when the tibia side is treated, the osteotomy thickness of the tibia side needs to be determined according to the degree of wear of the tibial plateau of a patient. The traditional tibial osteotomy thickness measurement on the market at present mainly has two forms of a bone probe and a thread locking gap spoon.

However, when the bone probe and the thread locking gap spoon are used for measuring the thickness of the cut tibia, the operation is inconvenient, and the measurement result of the cut thickness is prone to deviation, so that the cut accuracy is affected. Taking the thread locking gap spoon as an example, when the thread locking gap spoon is used for measuring the thickness of the cut tibia, the wear degree of the tibial plateau can be judged through the tightness of the gap plug piece and the ligament, so that the cut thickness of the tibial plateau can be determined. However, when the gap spoon is locked by the screw thread, the nut needs to be unscrewed first and then screwed after the adjustment is finished, so that the operation is complicated. Moreover, in the process of locking the nut, the gap spoon is easy to rotate under the action of the rotating force generated by the rotation of the nut, so that the measurement accuracy is influenced due to inaccurate positioning, and the deviation occurs at the subsequent bone cutting position.

SUMMERY OF THE UTILITY MODEL

Based on this, provide a cut bone system and cut bone volume measuring device thereof to solve and how to avoid cutting the problem that the bone position appears the deviation when improving the simple operation nature.

In one aspect, the utility model provides a cut bone volume measuring device, include:

the measuring piece is provided with a detecting part and a guiding part which are connected with each other, and the detecting part is used for adjusting the position of the measuring piece according to the object to be measured;

the base is provided with a first mounting part and a second mounting part, the first mounting part is detachably matched with the osteotomy plate in an inserting manner, the second mounting part is matched with the guide part, so that the base moves relative to the object to be detected under the guide of the guide part, and the second mounting part is provided with a through hole;

the pressing piece is provided with a connecting rod part and a pressing head part, and the connecting rod part is movably arranged in the through hole in a penetrating way;

locking mechanical system, including retaining member and linkage, the retaining member with the base rotates to be connected, and pass through the linkage with connecting rod portion is connected, works as the retaining member will cut the bone plate lock in during the first installation department, the retaining member warp the linkage drives connecting rod portion removes, so that pressure head portion will the guiding part lock in the second installation department.

In one embodiment, one end of the linkage part is hinged with the connecting rod part, the other end of the linkage part is provided with a limiting groove, the locking part is connected with a limiting pin, and the limiting pin is in sliding fit with the limiting groove.

In one embodiment, the locking member is provided with a clearance groove, and when the locking member rotates relative to the base, part of the structure of the linkage member moves in the clearance groove.

In one embodiment, one end of the locking member is rotatably connected with the base through a rotating shaft and forms a locking part, and the other end of the locking member forms an operating part which is used for operating the locking member to rotate around the rotating shaft relative to the base, so that the locking part locks or releases the osteotomy plate.

In one embodiment, the locking portion has a compression surface that moves toward or away from the first mounting portion to lock or release the bone plate when the retaining member is rotated relative to the base.

In one of them embodiment, the base has a main part, first installation department with the second installation department is located respectively the both ends of main part, the base be equipped with the relative support ear of first installation department, the perforation has been seted up to the main part, the one end of retaining member is passed the perforation and with support ear rotates and is connected.

In one embodiment, the supporting ear has a first shaft hole, the locking member has a second shaft hole, and the first shaft hole and the second shaft hole are both matched with the rotating shaft.

In one embodiment, the pressing head comprises an elastic piece, the elastic piece is arranged between the pressing piece and the second mounting portion, and enables the pressing head portion to have a moving trend away from the second mounting portion.

In one embodiment, the second mounting portion and/or the pressing head portion are provided with a groove, the elastic member is sleeved on the connecting rod portion, and at least part of the elastic member is accommodated in the groove.

In one embodiment, the guide portion is provided with a guide groove, the guide groove extends along the length direction of the guide portion, and the second mounting portion is provided with a guide block, and the guide block is in sliding fit with the guide groove.

In one embodiment, the measuring part is provided with an introducing port communicated with the guide groove, the radial inner dimension of the introducing port is larger than the width of the guide groove, and the radial outer dimension of the pressure head part is larger than the width of the guide groove and smaller than the radial inner dimension of the introducing port.

On the other hand, the utility model provides a cut bone system, including cutting bone plate and foretell bone cutting volume measuring device.

Above-mentioned osteotomy system and cut bone volume measuring device thereof, including the measuring part, a pedestal, compress tightly piece and locking mechanical system, locking mechanical system includes retaining member and linkage, when the retaining member will cut bone plate lock in the first installation department of base, can drive the connecting rod portion that compresses tightly the piece through the linkage and remove, make the pressure head portion that compresses tightly the piece lock in the second installation department with the guide part, thereby simplify the locking operation, improve the simple operation nature, and utilize the pressure head portion to the measuring part when supporting tight mode and being located first installation department, can not lead to the relative base of measuring part to appear shifting, effectively ensured measurement location accuracy, in order to avoid cutting the bone position deviation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of an osteotomy measuring device and an osteotomy plate in an osteotomy system according to one embodiment;

FIG. 2 is a schematic top view of an osteotomy measuring device of an osteotomy system according to one embodiment;

FIG. 3 is a schematic view of a measuring member of the osteotomy measuring device in an osteotomy system according to one embodiment;

FIG. 4 is a schematic diagram of a base of an osteotomy measurement device in an osteotomy system according to one embodiment;

FIG. 5 is a schematic cross-sectional view taken along line I-I of FIG. 2 of an osteotomy system with an osteotomy plate and a guide portion locked by an osteotomy measurement device according to one embodiment;

FIG. 6 is a schematic cross-sectional view taken along line I-I of FIG. 2 of the osteotomy measurement device in an intermediate state of the process of releasing the osteotomy plate, in accordance with one embodiment of the osteotomy system;

fig. 7 is a schematic structural view of a pressing member of the osteotomy measuring device in the osteotomy system of one embodiment.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1, the present application provides an osteotomy system, which includes an osteotomy plate 10 and an osteotomy amount measuring device 20, wherein the osteotomy plate 10 has an osteotomy groove 10a, and the osteotomy groove 10a is used for guiding an osteotomy tool to perform an osteotomy operation on a corresponding position, so as to prevent the osteotomy tool from deviating from the osteotomy position, thereby effectively ensuring the osteotomy accuracy. For example, when the osteotomy plate 10 is adopted to assist the osteotomy tool in osteotomy of the tibia, the osteotomy slot 10a may guide the osteotomy tool to osteotomy the tibia.

For the sake of understanding, the osteotomy system is described below as an example of the tibial osteotomy, but the use of the osteotomy system is not limited, and rather, the osteotomy system is also adapted to the osteotomy requirements of other parts.

Before the tibia is resected, the position of the resected bone, that is, the position of the resected bone plate 10 relative to the tibia needs to be determined so that the osteotomy tool inserted through the resected bone slot 10a can resect the bone at a correct position. Specifically, the osteotomy amount measuring device 20 is used to measure the amount of osteotomy, positioning the osteotomy plate 10 in a suitable position relative to the femur, so as to fix the osteotomy plate 10 to the tibia with the fixing means. Since the osteotomy plate 10 is not displaced relative to the tibia even if the osteotomy measurement device 20 is removed after the osteotomy plate 10 is fixed to the tibia, the osteotomy measurement device 20 may be removed from the osteotomy plate 10 after the osteotomy position is determined, so as to osteotomy the tibia along the osteotomy groove 10a of the osteotomy plate 10 with the osteotomy tool.

With continued reference to FIG. 1, the osteotomy measurement device 20 includes a measurement member 21, a base 22, a compression member 23, and a locking mechanism 24.

As shown in fig. 2 and 3, the measuring member 21 has a detecting portion 211 and a guiding portion 212, the detecting portion 211 is used for adjusting the position of itself according to the object to be measured, for example, in the embodiment of cutting the tibia, the detecting portion 211 can position the guiding portion 212 relative to the tibia. Specifically, the probe 211 is inserted into a knee joint gap (a gap between a femur and a tibia) so that the measuring piece 21 as a whole is positioned relative to the tibia, and therefore, the relative position of the guide 212 and the tibia is determined.

Further, the probe 211 has an arc shape, and can measure the knee joint gap, so as to determine the wear degree of the tibia, and determine the bone cutting position for cutting the tibia. Specifically, the principle of bone cutting amount measurement when the probe 211 is a gap spoon is as follows: the patient is in a 90-degree-of-flexion body position, the knee joint gap is stuffed with the gap spoon by utilizing the characteristic of abrasion of the posterior condylar cartilage, the abrasion degree of the tibial plateau is judged according to the tightness of the ligament, and the thickness of the cut bone of the tibial plateau is determined.

The probe 211 is not limited to an arc shape, and may be a straight rod shape or other known bone probe shape.

As shown in fig. 4 and 5, the base 22 has a first mounting portion 221 and a second mounting portion 222. The first mounting portion 221 is adapted to removably mate with the osteotomy plate 10, and the second mounting portion 222, in cooperation with the guide portion 212, enables the base 22 to move relative to the tibia under the guidance of the guide portion 212 to bring the osteotomy plate 10 into contact with the tibia, thereby facilitating positioning of the osteotomy plate 10 to determine the osteotomy position.

It should be noted that the first mounting portion 221 and the second mounting portion 222 serve as two portions of the base 22 for mounting the osteotome plate 10 and the guide portion 212, and the relative positions of the two portions are determined. Thus, when the osteotomy plate 10 and the guide portion 212 are fixed in position relative to the first mounting portion 221 and the second mounting portion 222, respectively, the guide portion 212 can position the osteotomy plate 10 relative to the tibia by positioning the base 22 relative to the tibia through the probe portion 211.

The compression member 23 is mounted to the second mounting portion 222 for locking the relative positions of the guide portion 212 and the second mounting portion 222 to prevent play between the second mounting portion 222 and the guide portion 212 when the osteotomy plate 10 is secured relative to the tibia, thereby ensuring accuracy of the fixation of the osteotomy plate 10 relative to the tibia.

As shown in fig. 4 and 5, the second mounting portion 222 is opened with a through hole 222a, the pressing element 23 has a link portion 231 and a pressing head portion 232, the link portion 231 is movably inserted into the through hole 222a, so that when the link portion 231 moves relative to the second mounting portion 222 at the through hole 222a, the pressing head portion 232 can be driven to clamp or release the guide portion 212 engaged with the second mounting portion 222. It can be understood that when the press head portion 232 clamps the guide portion 212, the guide portion 212 is pressed by the press head portion 232 and cannot move relative to the second mounting portion 222; when the pressing head 232 releases the guide portion 212, that is, the pressing head 232 moves away from the second mounting portion 222, so that a gap between the two is enlarged to release the clamping of the guide portion 212, at this time, the guide portion 212 and the second mounting portion 222 can move relative to each other.

The locking mechanism 24 includes a locking member 241 and a linkage member 242. The locking member 241 is rotatably coupled to the base 22 and is coupled to the link portion 231 via a link 242. As shown in fig. 5, when the locking member 241 locks the osteotome plate 10 to the first mounting portion 221, the locking member 241 moves the link portion 231 via the linkage member 242 so that the head pressing portion 232 locks the guide portion 212 to the second mounting portion 222. Therefore, when the locking member 241 is operated to lock the relative position of the bone truncating plate 10 and the first mounting portion 221, the linkage member 242 can synchronously drive the connecting rod portion 231 to move, the operation that the head pressing portion 232 locks the relative position of the guide portion 212 and the second mounting portion 222 is completed, and further, multiple operations are not needed, so that the operation is simple and convenient.

Since the locking member 241 locks the osteotomy plate 10 by rotating relative to the base 22 and the head 232 locks the guide portion 212 in a pressing manner, the stability between the guide portion 212 and the base 22 and between the osteotomy plate 10 and the guide portion 212 is good, so that the osteotomy plate 10 is accurately fixed at the osteotomy position relative to the tibia, and the osteotomy position is prevented from being deviated.

When it is desired to unlock the osteotomy plate 10 and the guide 212, as shown in fig. 6, the retaining member 241 is simply lifted upwardly relative to the base 22 (the retaining member 241 is rotated counterclockwise relative to the base 22 as shown in fig. 6). It should be noted that fig. 6 shows only an intermediate state during the rotation of the locking member 241 relative to the base 22. As can be seen from the osteotomy measurement device 20 shown in fig. 6, as the locking member 241 is continued to rotate counterclockwise relative to the base 22, the locking member 241 releases the abutment against the osteotomy plate 10 so that the osteotomy plate 10 and the first mounting portion 221 can be separated from each other. Thus, when the osteotomy plate 10 is fixed to the tibia by the osteotomy measurement device 20 and the osteotomy measurement device 20 needs to be removed, the locking member 241 is simply operated to rotate counterclockwise relative to the base 22.

Referring to fig. 1 and 2 again, the guide portion 212 is provided with a guide groove 212a, the guide groove 212a extends along the length direction of the guide portion 212, the second mounting portion 222 is provided with a guide block 222b, and the guide block 222b is in sliding fit with the guide groove 212 a. When the guide portion 212 and the second mounting portion 222 move relative to each other, the guide block 222b moves along the guide groove 212a to guide the base 22 to move relative to the guide portion 212.

The measuring unit 21 has an inlet 212b communicating with the guide groove 212a, and the radially inner dimension of the inlet 212b is larger than the width of the guide groove 212 a.

Wherein a radially outer dimension of the presser head portion 232 is smaller than a radially inner dimension of the introduction port 212b, so that the presser head portion 232 can pass through the introduction port 212b, so that the guide portion 212 can be interposed between the presser head portion 232 and the second mounting portion 222. Here, the axial direction is a vertical direction, the radial direction is a direction perpendicular to the axial direction, the radially outer dimension of the indenter section 232 is a maximum length of the indenter section 232 in the radial direction, and the radially inner dimension of the introduction port 212b is a maximum length of the introduction port 212b in the radial direction. In this embodiment, the radially outer dimension of the pressing head portion 232 is greater than the width of the guide groove 212a, that is, the pressing head portion 232 cannot pass through the guide groove 212a, and then the pressing head portion 232 can limit the guide portion 212 when the guide portion 212 is located between the pressing head portion 232 and the second mounting portion 222. Here, the width of the guide groove 212a refers to the length of the guide groove 212a in a direction perpendicular to the extending direction thereof.

In some embodiments, the introduction port 212b is disposed at an end of the guide groove 212a that is farther from the detection part 211. In other embodiments, the introduction port 212b may be provided at an intermediate position of the probe 211, and the position of the introduction port 212b is not limited thereto, as long as the guide 212 can be disposed between the presser head 232 and the second mounting portion 222.

In some embodiments, the first mounting portion 221 is removably fitted into the osteotomy groove 10a, so that when the osteotomy position is determined, the osteotomy plate 10 may be easily coupled to the first mounting portion 221 to determine the fixed position of the osteotomy plate 10 relative to the tibia, and thus the position of the osteotomy groove 10a of the osteotomy plate 10 relative to the tibia, and thus the amount of the tibia. After the osteotomy amount is determined, the locking of the osteotomy plate 10 by the locking member 241 is released, so that the first mounting portion 221 can be quickly removed from the osteotomy groove 10a, and the osteotomy amount measuring device 20 can be separated from the osteotomy plate 10, so that the osteotomy blade can be guided by the osteotomy groove 10a of the osteotomy plate 10 to perform accurate osteotomy at the determined osteotomy position.

As shown in fig. 1, 5 and 6, one end of the link 242 is hinged to the link 231, for example, the link 231 is provided with a hinge hole 231a, and the link 242 and the link 231 are connected by a hinge shaft 243 penetrating through the hinge hole 231 a.

The other end of the linkage piece 242 is provided with a limiting groove 242a, the locking piece 241 is connected with a limiting pin 241a, the limiting pin 241a can be matched with a pin hole on the locking piece 241, and also can be in threaded connection or welded together with the locking piece 241, and as for the connection mode between the limiting pin 241a and the locking piece 241, limitation is not performed here, and only the limiting pin 241a needs to be connected with the locking piece 241 and can be in sliding fit with the limiting groove 242 a. By matching the limiting pin 241a with the limiting groove 242a, the locking member 241 is movably connected with the linkage member 242, so that the flexibility of the movable connection between the locking member 241 and the linkage member 242 is improved, and even if the connecting rod portion 231 only can move up and down in the through hole 222a, the locking member 241 can drive the connecting rod portion 231 to move through the linkage member 242.

It should be noted that the limiting slot 242a may limit the movement of the limiting pin 241a so that the locking member 241 can lock or release the osteotomy plate 10 and the guide portion 212 during rotation relative to the base 22. For example, as shown in fig. 5, when the locking member 241 is operated to rotate clockwise relative to the base 22, the limiting pin 241a slides along the limiting groove 242a during the movement of the limiting pin 241a along with the locking member 241, and when the limiting pin 241a slides to the end of the limiting groove 242a far from the pressing member 23, the locking member 241 continues to rotate clockwise, the locking member 241 can drive the connecting rod portion 231 to move relative to the second mounting portion 222 through the linkage member 242, so that the connecting rod portion 231 drives the pressing head portion 232 to press the guiding portion 212 matched with the second mounting portion 222.

As shown in fig. 5 and 6, the locking member 241 is provided with a clearance groove 241b, when the locking member 241 rotates relative to the base 22, a part of the structure of the linkage member 242 moves in the clearance groove 241b, which prevents interference between the locking member 241 and the linkage member 242 during rotation relative to the base 22, and also makes the structure between the locking member 241 and the linkage member 242 compact.

It should be noted that the limiting groove 242a of the linking member 242 may be eliminated, for example, in other embodiments, the other end of the link portion 231 is directly hinged to the locking member 241, and in this case, the through hole 222a of the second mounting portion 222 only needs to be capable of flexibly swinging to adapt to the link portion 231.

There are many possibilities for the rotation structure between the locking member 241 and the base 22, and the rotation of the locking member and the base is only achieved by using a rotating shaft as an example. Specifically, as shown in fig. 1 and 5, one end of the locking member 241 is rotatably connected to the base 22 via a rotating shaft 241c and forms a locking portion 2411, and the other end of the locking member 241 forms an operating portion 2412, wherein the operating portion 2412 is used for operating the locking member 241 to rotate around the rotating shaft 241c relative to the base 22, so that the locking portion 2411 locks or releases the osteotomy plate 10.

Further, the locker 241 is an eccentric cam locking structure, and in particular, the locking portion 2411 has a pressing surface 2411a, and when the locker 241 is rotated relative to the base 22, the pressing surface 2411a of the locking portion 2411 approaches or separates from the first mounting portion 221 to lock or release the bone plate 10.

Referring to fig. 1 again, in some embodiments, the base 22 has a main body portion 223, the first mounting portion 221 and the second mounting portion 222 are respectively located at two ends of the main body portion 223, the base 22 is provided with a supporting ear 224 opposite to the first mounting portion 221, the main body portion 223 is provided with a through hole 223a, and one end of the locking member 241 passes through the through hole 223a and is rotatably connected to the supporting ear 224.

Further, the supporting ear 224 is opened with a first shaft hole 224a, the locking member 241 is provided with a second shaft hole 2413, and both the first shaft hole 224a and the second shaft hole 2413 are matched with the rotating shaft 241 c.

In some embodiments, the body portion 223 is block-shaped, such that the shape of the body portion 223 is regular to facilitate processing of the base 22.

The osteotomy amount measuring device 20 includes an elastic member 25, the elastic member 25 is disposed between the pressing member 23 and the second mounting portion 222, and the pressing head portion 232 has a tendency to move away from the second mounting portion 222, so that when the locking member 241 releases the locking force to the osteotomy plate 10, the pressing head portion 232 moves away from the second mounting portion 222 under the elastic force of the elastic member 25 to release the locking of the guide portion 212.

Further, at least one of the second mounting portion 222 and the pressing head portion 232 is provided with a groove, and the elastic member 25 is sleeved on the connecting rod portion 231 and at least a part of the structure is accommodated in the groove.

Specifically, as shown in fig. 4 and 5, the second mounting portion 222 is formed with a first groove 222c, the elastic element 25 is sleeved on the connecting rod portion 231, and at least a portion of the structure is accommodated in the first groove 222 c. By accommodating the elastic member 25 in the first groove 222c, not only the osteotomy measuring device 20 can be made compact, but also the side wall of the first groove 222c has a positioning and guiding effect on the elastic member 25, so as to facilitate the stability of the movement of the pressing head 232 relative to the second mounting portion 222.

In some embodiments, as shown in fig. 6 and 7, the pressing head 232 is formed with a second groove 232a, the elastic element 25 is sleeved on the connecting rod 231, and at least a portion of the structure is received in the second groove 232 a. By accommodating the elastic member 25 in the second groove 232a, the osteotomy measuring device 20 can be compact, and the side wall of the second groove 232a has a positioning and guiding effect on the elastic member 25, so as to facilitate the stability of the movement of the head pressing portion 232 relative to the second mounting portion 222.

The elastic member 25 may be a spring, or may be a washer or a washer having an elastic property, and the type of the elastic member 25 is not limited herein.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. It is to be understood that the above embodiment has been described with the features of the present osteotomy measuring device 20 taking a human tibia osteotomy as an example, but the present device may also be used for osteotomy of other parts, such as an elbow joint of a human body, a knee joint and an elbow joint of an animal, etc., as long as the structures of the objects to be measured are similar.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An osteotomy measuring device, comprising:

2. The osteotomy measuring device of claim 1, wherein one end of the linkage member is hinged to the connecting rod portion, the other end of the linkage member is provided with a limiting groove, the locking member is connected with a limiting pin, and the limiting pin is slidably engaged with the limiting groove.

3. The osteotomy measuring device of claim 2, wherein the retaining member defines a clearance slot, and a portion of the linkage member moves within the clearance slot when the retaining member rotates relative to the base.

4. The osteotomy measuring device of claim 1, wherein one end of the locking member is rotatably coupled to the base by a rotating shaft and forms a locking portion, and the other end of the locking member forms an operating portion for operating the locking member to rotate about the rotating shaft relative to the base, so that the locking portion locks or releases the osteotomy plate.

5. The osteotomy measurement device of claim 4, wherein the locking portion has a compression surface that moves closer to or away from the first mounting portion to lock or release the osteotomy plate when the retaining member is rotated relative to the base.

6. The osteotomy measuring device of claim 4, wherein the base has a main body portion, the first and second mounting portions are respectively located at two ends of the main body portion, the base is provided with a supporting ear portion opposite to the first mounting portion, the main body portion is provided with a through hole, and one end of the locking member passes through the through hole and is rotatably connected with the supporting ear portion.

7. The osteotomy measuring device of claim 6, wherein the support ear defines a first axial hole, the retaining member defines a second axial hole, and the first and second axial holes are engaged with the shaft.

8. The osteotomy measurement device of claim 1, comprising an elastic member disposed between the compression member and the second mounting portion and configured to cause the compression head portion to have a tendency to move away from the second mounting portion.

9. The osteotomy measuring device of claim 8, wherein the second mounting portion and/or the indenter portion defines a recess, and the elastic member is disposed around the rod portion and at least partially received in the recess.

10. The osteotomy measuring device of claim 1, wherein the guide portion defines a guide slot extending along a length of the guide portion, the second mounting portion defining a guide block slidably engaged with the guide slot.

11. The osteotomy measuring device of claim 10, wherein the gauge defines an introduction port communicating with the guide slot, a radially inner dimension of the introduction port being greater than a width of the guide slot, and a radially outer dimension of the indenter portion being greater than the width of the guide slot and less than the radially inner dimension of the introduction port.

12. An osteotomy system comprising an osteotomy plate and an osteotomy measurement device according to any one of claims 1-11.