Soft tissue dynamic balance measuring instrument

Abstract

The utility model relates to a soft tissue dynamic balance measuring instrument which comprises a measuring assembly used for measuring stress and a plurality of measuring gaskets which are stacked together and arranged at the bottom of the measuring assembly, at least two limiting protrusions are arranged on one side of each measuring gasket, and at least two limiting grooves are formed in the other side of each measuring gasket. The limiting protrusion of one measuring gasket is inserted into the limiting groove of the adjacent measuring gasket, and the protruding direction of the limiting protrusion and the sinking direction of the limiting groove are both in the direction close to or away from the measuring assembly. According to the soft tissue dynamic balance measuring instrument, the limiting grooves and the limiting protrusions between the adjacent measuring gaskets are connected in an inserted mode, the limiting protrusions are limited through the limiting grooves, and therefore relative slippage between the two adjacent measuring gaskets is prevented; besides, the number of the limiting protrusions and the number of the limiting grooves are at least two, so that relative rotation between every two adjacent measuring gaskets is prevented, and the measuring precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a soft tissue dynamic balance measuring instrument. Background Art

[0002] The knee joint is one of the largest and most important joints in the human body. Knee joint lesions will seriously affect the patient's mobility and reduce their quality of life. For some seriously diseased knee joints, total knee arthroplasty (TKA) technology can be used. Total knee arthroplasty can maximize the reconstruction of knee joint function and improve the patient's quality of life. It is an important surgical solution for treating severe knee joint lesions.

[0003] The soft tissue balancing technology around the knee in total knee replacement is generally implemented using corresponding soft tissue balancing instruments. Coupling gaskets with different fixed thicknesses need to be placed in the knee joint, and the soft tissues in the medial and lateral directions of the knee joint are forcefully opened to evaluate whether the elasticity and opening distance of the medial and lateral soft tissues are equal during this process. Currently, coupling gaskets of different thicknesses are prone to dislocation during use, which affects the measurement results. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a soft tissue dynamic balance measuring instrument, which can improve the measurement accuracy.

[0005] To achieve the above-mentioned purpose, the utility model provides a soft tissue dynamic balance measuring instrument, comprising a measuring component for measuring stress and a plurality of stacked measuring pads arranged at the bottom of the measuring component, one side of the measuring pad is provided with at least two limiting protrusions, and the other side of the measuring pad is provided with at least two limiting grooves, wherein the limiting protrusion of one of the measuring pads is inserted into the limiting groove of the adjacent measuring pad, the relative sliding direction between the two adjacent measuring pads is a reference direction, and the protruding direction of the limiting protrusion and the recessed direction of the limiting groove both intersect with the reference direction.

[0006] In an embodiment of the present invention, there is a clearance fit between the limiting groove and the limiting protrusion.

[0007] In one embodiment of the present invention, the limiting groove is provided at the bottom of the measuring component, and the limiting protrusion of the measuring gasket adjacent to the measuring component is inserted into the limiting groove on the measuring component.

[0008] In an embodiment of the present utility model, three limiting protrusions and three limiting grooves are provided on the measuring gasket, and the three limiting protrusions are arranged in a triangle, and the three limiting grooves are arranged in a triangle.

[0009] In one embodiment of the utility model, the measuring assembly includes a first handle portion and a first measuring portion connected to each other, the first measuring portion is U-shaped; the measuring gasket includes a second handle portion and a second measuring portion connected to each other, the second measuring portion is U-shaped; the U-shaped first measuring portion is connected to the U-shaped second measuring portion to form a U-shaped cavity.

[0010] In one embodiment of the utility model, it also includes a circuit board, a controller is arranged on the circuit board, the measuring component includes a measuring housing and two pressure acquisition units, the measuring housing includes a measuring base, the pressure acquisition unit includes a pressure sensor and a sliding member, the pressure sensor is arranged on the measuring base, a sliding groove is arranged on the measuring base, the sliding member is slidably arranged in the sliding groove, one end of the sliding member abuts against the pressure sensor, and the other end of the sliding member forms an abutting end, and the controller is connected to the pressure sensor.

[0011] In one embodiment of the utility model, the measuring housing also includes a measuring upper cover connected to the measuring base, and the pressure collection unit also includes a contact piece, which is slidably arranged on the measuring upper cover, and the contact piece includes a limiting portion and a contact portion which are connected to each other, and the contact portion extends to the outside of the measuring upper cover, and one end of the limiting portion is limited inside the measuring upper cover, and a compression spring is arranged between the other end of the limiting portion and the measuring base, and an abutting surface is arranged on the limiting portion, and the abutting end abuts against or is separated from the abutting surface.

[0012] In one embodiment of the present invention, the soft tissue dynamic balance measuring instrument further includes a display component, and the display component is communicatively connected to the controller.

[0013] In one embodiment of the present invention, the sliding member is spherical.

[0014] In one embodiment of the present invention, the soft tissue dynamic balance measuring instrument is a disposable device.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] (1) In the soft tissue dynamic balance measuring instrument of the present application, a plurality of mutually plugged measuring gaskets realize a combination of different thicknesses, thereby improving the versatility of the soft tissue dynamic balance measuring instrument.

[0017] (2) In the soft tissue dynamic balance measuring instrument of the present application, the limiting grooves between adjacent measuring gaskets are plugged into the limiting protrusions, and the limiting protrusions are limited by the limiting grooves to prevent relative slippage between two adjacent measuring gaskets, thereby improving the measurement accuracy.

[0018] (3) The soft tissue dynamic balance measuring instrument of the present application also prevents relative rotation between two adjacent measuring gaskets because the number of the limiting protrusions and the limiting grooves is at least two, thereby further improving the ease of use of the soft tissue dynamic balance measuring instrument, improving the measurement accuracy, and providing effective quantitative data for doctors to adjust soft tissues.

[0019] (4) The soft tissue dynamic balance measuring instrument of the present application is a disposable device, avoiding the potential infection risk of repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a first exploded structural schematic diagram of the soft tissue dynamic balance measuring instrument of the utility model;

[0022] Figure 2 This is a second exploded structural schematic diagram of the soft tissue dynamic balance measuring instrument of the utility model;

[0023] Figure 3 It is a third exploded structural schematic diagram of the soft tissue dynamic balance measuring instrument of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the measuring base of the soft tissue dynamic balance measuring instrument of the utility model;

[0025] Figure 5 It is a schematic diagram of the assembly structure of the soft tissue dynamic balance measuring instrument of the utility model;

[0026] Figure 6 It is a top view of the soft tissue dynamic balance measuring instrument of the utility model;

[0027] Figure 7 yes Figure 6 Sectional view at AA in the middle;

[0028] Figure 8 It is a schematic diagram of measuring the knee joint extension position by the soft tissue dynamic balance measuring instrument of the utility model;

[0029] Fig. 9 The utility model is a schematic diagram of measuring the flexion position of the knee joint by the soft tissue dynamic balance measuring instrument.

[0030] Description of the Figures in the Specification:

[0031] 1. Measuring component; 2. Measuring gasket; 3. Limiting protrusion; 4. Limiting groove; 5. First handle part; 6. First measuring part; 7. Second handle part; 8. Second measuring part; 9. U-shaped cavity; 10. Circuit board; 11. Controller; 12. Measuring housing; 13. Pressure acquisition unit; 14. Measuring base; 15. Pressure sensor; 16. Sliding member; 17. Sliding groove; 18. Abutment end; 19. Measuring upper cover; 20. Contact member; 21. Limiting part; 22. Contact part; 23. Compression spring; 24. Abutment surface. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figures 1 to 9 As shown, the soft tissue dynamic balance measuring instrument of the utility model comprises a measuring component 1 for measuring stress and a plurality of stacked measuring pads 2 arranged at the bottom of the measuring component 1, at least two limiting protrusions 3 are arranged on one side of the measuring pad 2, and at least two limiting grooves 4 are arranged on the other side of the measuring pad 2, wherein the limiting protrusion 3 of one of the measuring pads 2 is inserted into the limiting groove 4 of the adjacent measuring pad 2, the relative sliding direction between the two adjacent measuring pads 2 is a reference direction, and the protruding direction of the limiting protrusion 3 and the concave direction of the limiting groove 4 both intersect with the reference direction.

[0034] For joint movement, the tension or relaxation of the surrounding soft tissue will have an impact on it. If the surrounding collateral ligaments are too tight, the joint movement may be restricted. However, if the surrounding collateral ligaments are too loose, improper femoral rotation or femoral separation may occur. Therefore, it is necessary to maintain appropriate strength to ensure good joint movement. The soft tissue dynamic balance measuring instrument of the present application includes a measuring component 1 and a measuring gasket 2. The force of the knee joint is measured by the cooperation of the measuring component 1 and the measuring gasket 2. Among them, the measuring component 1 is mainly used to measure the force between the tibia and femur of the knee joint. The thickness of the entire soft tissue dynamic balance measuring instrument is adjusted by measuring the gasket 2 to simulate the thickness of the knee joint prosthesis, further reflecting the force of the prosthesis between the tibia and femur, and providing a quantitative basis for doctors to adjust soft tissue. Specifically, the measuring gasket 2 includes multiple, and several measuring gaskets are superimposed together and connected to the bottom of the measuring component 1 as a whole. Furthermore, at least two limiting protrusions 3 are arranged along one of the two sides of the thickness of the measuring gasket 2, and at least two limiting grooves 4 are arranged along the other side of the two sides of the thickness of the measuring gasket 2, and the protruding direction of the limiting protrusion 3 and the recessed direction of the limiting groove 4 are both in the direction close to or away from the measuring component 1, such as, the limiting protrusion 3 on one side of the measuring gasket 2 protrudes in the direction toward the measuring component 1, and the limiting groove 4 on the other side of the measuring gasket 2 is recessed in the direction toward the measuring component 1, or, the limiting protrusion 3 on one side of the measuring gasket 2 protrudes in the direction away from the measuring component 1, and the limiting groove 4 on the other side of the measuring gasket 2 is recessed in the direction away from the measuring component 1. Between two adjacent measuring pads, the limiting protrusion 3 on one measuring pad 2 is inserted into the limiting groove 4 of the other measuring pad 2, and the relative sliding direction between the two adjacent measuring pads 2 is the reference direction. Since the protruding direction of the limiting protrusion 3 and the concave direction of the limiting groove 4 both intersect with the reference direction, preferably, the protruding direction of the limiting protrusion 3 and the concave direction of the limiting groove 4 are both perpendicular to the reference direction, such as Figure 1 and Figure 2 As shown, therefore, the limiting groove 4 limits the limiting protrusion 3 to prevent relative slippage between two adjacent measuring pads 2. In addition, since the number of the limiting protrusion 3 and the limiting groove 4 is at least two, the relative rotation between two adjacent measuring pads 2 is also prevented. Since the measuring pads 2 can be plugged and superimposed on each other through the cooperation of the limiting protrusion 3 and the limiting groove 4, the thickness of the soft tissue dynamic balance measuring instrument can be adjusted to simulate the thickness of different prostheses, thereby improving the versatility of the soft tissue dynamic balance measuring instrument. Among them, the thickness of the measuring pad 2 can be designed according to actual needs, such as selecting a thickness range of 1mm-2mm, or a thickness range of 2mm-3mm.

[0035] The soft tissue dynamic balance measuring instrument of the present application has a plurality of mutually plugged measuring pads 2 to achieve a combination of different thicknesses, thereby improving the versatility of the soft tissue dynamic balance measuring instrument; in addition, the limiting grooves 4 between adjacent measuring pads 2 are plugged into the limiting protrusions 3, and the limiting protrusions 3 are limited by the limiting grooves 4 to prevent relative slippage between two adjacent measuring pads 2; further, since the number of limiting protrusions 3 and limiting grooves 4 is at least two, relative rotation between two adjacent measuring pads 2 is also prevented, thereby further improving the ease of use of the soft tissue dynamic balance measuring instrument, improving the measurement accuracy, and providing effective quantitative data for doctors to adjust soft tissues.

[0036] In one embodiment, there is a clearance fit between the limiting groove 4 and the limiting protrusion 3 .

[0037] The limiting groove 4 and the limiting protrusion 3 between two adjacent measuring gaskets 2 are clearance-fitted, and the clearance between the limiting groove 4 and the limiting protrusion 3 is 0.02mm-0.03mm. Although the limiting groove 4 and the limiting protrusion 3 are clearance-fitted, since there are shape and position tolerances between multiple limiting protrusions 3, and there are shape and position tolerances between the limiting grooves 4, the two adjacent measuring gaskets can be kept slightly clamped after assembly to prevent the adjacent measuring gaskets 2 from falling off during use, thereby ensuring the convenience of use of the soft tissue dynamic balance measuring instrument.

[0038] In one embodiment, the limiting groove 4 is provided at the bottom of the measuring component 1 , and the limiting protrusion 3 of the measuring gasket 2 adjacent to the measuring component 1 is inserted into the limiting groove 4 on the measuring component 1 .

[0039] There are two ways of plugging the measuring component 1 and the measuring pad 2. One is to set a limit protrusion 3 on the measuring component 1 and a limit groove 4 on the measuring pad 2; the other is to set a limit groove 4 on the measuring component 1 and a limit protrusion 3 on the measuring pad 2. This application adopts the second way, that is, to set a limit groove 4 on the measuring component 1 and a limit protrusion 3 on the measuring pad 2. Figure 1 and Figure 2 Further, the limiting protrusion 3 of the measuring pad 2 adjacent to the measuring component 1 is inserted into the limiting groove 4 on the measuring component 1; the limiting protrusion 3 on one of the two adjacent measuring pads 2 is inserted into the limiting groove 4 on the other measuring base plate, so as to realize the connection between the measuring pads 2 and the connection between the measuring pads 2 and the measuring component 1, and the relative movement between the measuring pads 2 is prevented by the cooperation between the limiting groove 4 and the limiting protrusion 3, so as to improve the effectiveness of data collection.

[0040] In one embodiment, three limiting protrusions 3 and three limiting grooves 4 are provided on the measuring pad 2, and the three limiting protrusions 3 are arranged in a triangle, and the three limiting grooves 4 are arranged in a triangle.

[0041] like Figure 1 , Figure 2 , Figure 3 As shown, three limiting protrusions 3 are provided on the measuring pad 2, and the three limiting protrusions 3 are arranged in a triangular shape; three limiting grooves 4 are provided on the measuring pad 2, and the three limiting grooves 4 are arranged in a triangular shape. Preferably, the three limiting protrusions 3 and the three limiting grooves 4 are arranged in an isosceles triangle, which can improve the connection stability between two adjacent measuring pads 2.

[0042] In one embodiment, the measuring component 1 includes a first handle portion 5 and a first measuring portion 6 connected to each other, and the first measuring portion 6 is U-shaped; the measuring gasket 2 includes a second handle portion 7 and a second measuring portion 8 connected to each other, and the second measuring portion 8 is U-shaped; the U-shaped first measuring portion 6 is connected to the U-shaped second measuring portion 8 to form a U-shaped cavity 9.

[0043] like Figure 5 As shown, the measuring assembly 1 includes a first handle portion 5 and a first measuring portion 6 connected to each other. The first handle portion 5 is convenient for medical personnel to pick up and move the soft tissue dynamic balance measuring instrument, which is convenient for human-computer interaction; the first measuring portion 6 is used to cooperate with the second measuring portion 8 of the measuring pad 2 to achieve the measurement of the force between the tibia and femur of the knee joint. The structure of the measuring pad 2 is similar to that of the measuring assembly 1. The measuring pad 2 includes a second handle portion 7 and a second measuring portion 8 connected to each other. The second handle portion 7 is convenient for medical personnel to pick up and move the measuring pad 2, facilitate the plugging of two measuring pads 2, and facilitate the plugging of the measuring pad 2 into the soft tissue dynamic balance measuring instrument, which is convenient for human-computer interaction; the second measuring portion 8 is used to cooperate with the first measuring portion 6 of the measuring assembly 1 to achieve the measurement of the force between the tibia and femur of the knee joint. Furthermore, the first measuring part 6 and the second measuring part 8 are both U-shaped, and when the measuring pad 2 is plugged into the measuring component 1, the U-shaped first measuring part 6 and the U-shaped second measuring part 8 are connected to form a U-shaped cavity 9. When performing intraoperative measurement, the U-shaped cavity 9 can effectively avoid the anterior and posterior cruciate ligaments and other soft tissues in the middle area, ensuring effective contact of the measuring surface.

[0044] In one embodiment, it also includes a circuit board 10, on which a controller 11 is arranged, the measuring component 1 includes a measuring housing 12 and two pressure acquisition units 13, the measuring housing 12 includes a measuring base 14, the pressure acquisition unit 13 includes a pressure sensor 15 and a sliding member 16, the pressure sensor 15 is arranged on the measuring base 14, a sliding groove 17 is arranged on the measuring base 14, the sliding member 16 is slidably arranged in the sliding groove 17, one end of the sliding member 16 abuts against the pressure sensor 15, and the other end of the sliding member 16 forms an abutting end 18, and the controller 11 is connected to the pressure sensor 15.

[0045] After completing the six-surface osteotomy of the femur and tibia at the knee joint, a mounting cavity will be formed between the femur and tibia in the flexed or extended position of the knee joint, such as Figure 8 and Fig. 9 The cavity for installing the measuring instrument is shown in the figure. At this time, the measuring instrument is placed in the installation cavity to compare the pressure inside and outside the knee joint, that is, to measure the force between the tibia and femur of the knee joint, so the force needs to be collected. The soft tissue dynamic balance measuring instrument also includes a circuit board 10, and a controller 11 is arranged on the circuit board 10. The measuring component 1 includes a measuring shell 12 and a pressure collection unit 13. The pressure collection unit 13 is arranged on the measuring shell 12. The pressure collection unit 13 is used to collect pressure data between the tibia and femur of the knee joint. The controller 11 is used to perform relevant processing on the pressure data, such as sending data, saving data and other operations. Furthermore, the measuring shell 12 includes a measuring base 14. As shown Figure 3 , Figure 4 , Figure 7 As shown, the pressure acquisition unit 13 includes a pressure sensor 15 and a sliding member 16. The pressure sensor 15 is arranged on a measuring base 14, and a sliding groove 17 is arranged on the measuring base 14. The pressure sensor 15 is installed at the bottom of the sliding groove 17. The sliding member 16 is arranged in the sliding groove 17. The sliding member 16 slides in the sliding groove 17, and one end of the sliding member 16 abuts against the pressure sensor 15. Since the pressure sensor 15 is arranged on the measuring base 14, the pressure sensor 15 is fixed relative to the measuring base 14, and the measuring base 14 is connected to the tibia through the measuring gasket 2; the other end of the sliding member 16 is the abutting end 18, and the abutting end 18 is connected to the femur. Therefore, when the sliding member 16 slides in the sliding groove 17, the pressure generated by the sliding member 16 on the pressure sensor 15 is different, and the sliding amount of the sliding member 16 reflects the change in the distance between the tibia and the femur of the knee joint. The pressure sensor 15 converts the sliding amount of the sliding member 16 into a pressure value, and the pressure value reflects the force between the tibia and the femur of the knee joint. Further, the pressure collection unit 13 is provided with two, such as Figure 6As shown, the left and right pressure collection units 13 simultaneously sense and measure to evaluate the pressure value and difference on the inner and outer sides of the knee joint after osteotomy, providing a quantitative basis for doctors to adjust soft tissues. In addition, the size of the sliding member 16 and the pressure sensor 15 is designed to match the size of the sliding groove 17 to reduce the radial displacement of the sliding member 16 and the pressure sensor 15 in the sliding groove 17, so as to prevent the sliding member 16 and the contact part 22 of the pressure sensor 15 from sliding and affecting the measurement accuracy.

[0046] In one embodiment, the measuring housing 12 also includes a measuring upper cover 19 connected to the measuring base 14, and the pressure collection unit 13 also includes a contact member 20, which is slidably disposed on the measuring upper cover 19, and the contact member 20 includes a limiting portion 21 and a contact portion 22 that are connected to each other, and the contact portion 22 extends to the outside of the measuring upper cover 19, and one end of the limiting portion 21 is limited in the measuring upper cover 19, and a compression spring 23 is arranged between the other end of the limiting portion 21 and the measuring base 14, and a contact surface 24 is arranged on the limiting portion 21, and the abutting end 18 is in contact with or separated from the abutting surface 24.

[0047] The measuring housing 12 further includes a measuring cover 19, which is connected to the measuring base 14. The pressure collection unit 13 further includes a contact member 20, which is slidably arranged on the measuring cover 19, one end of which abuts against the femur, and the other end of which abuts against or separates from the sliding member 16. Further, the contact member 20 includes a limiting portion 21 and a contact portion 22, one end of which is connected to the limiting portion 21, and the other end of which abuts against the femur, so that the end of the contact portion 22 abutting against the femur extends to the outside of the measuring cover 19. One end of the limiting portion 21 is limited in the measuring cover 19 to prevent the contact member 20 from escaping from the measuring cover 19, and the other end of the limiting portion 21 is provided with an abutting surface 24, and the abutting surface 24 on the contact member 20 abuts against or separates from the abutting end 18 on the sliding member 16. Furthermore, a spring is provided between the contact piece 20 and the measuring base 14. Specifically, the spring is a compression spring 23, and is provided between the limit portion 21 and the measuring base 14. When the soft tissue dynamic balance measuring instrument is in a non-working state, under the action of the compression spring 23, the contact piece 20 is always in a state of being separated from the measuring base 14. Among them, the elastic force of the compression spring 23 is relatively small, and the elastic force of the compression spring 23 is equivalent to the weight of the contact piece 20, so as to reduce the influence of the elastic force of the compression spring 23 on the test data during the test. The top of the contact piece 20 of the soft tissue dynamic balance measuring instrument abuts against the femur, and the bottom of the measuring pad 2 abuts against the tibia, as shown in FIG. Figure 8 and Fig. 9 As shown, Figure 8 For straight position, Fig. 9The flexion position is used for collecting pressure data.

[0048] In one embodiment, the soft tissue dynamic balance measuring instrument further includes a display component, and the display component is communicatively connected to the controller 11 .

[0049] The soft tissue dynamic balance measuring instrument also includes a display component, which is connected to the controller 11 in communication. Therefore, when working, the controller 11 collects the electrical signal transmitted by the pressure sensor 15, converts the electrical signal to a pressure value through a specific pressure curve, and then transmits it to the receiving display component in real time through the transmission module, so that the display component can more intuitively display the force between the tibia and femur of the knee joint. Preferably, the transmission module can use Bluetooth connection to achieve real-time transmission of pressure data.

[0050] In one embodiment, the sliding member 16 is spherical.

[0051] The sliding member 16 can be a rigid medium such as a sphere or a cylinder. Preferably, a sphere is selected, and the spherical sliding member 16 is in point contact with the pressure sensor 15, which can improve the measurement accuracy.

[0052] In one embodiment, the soft tissue dynamic balance measuring instrument is a disposable device.

[0053] The measuring instruments in the prior art are reused after being disinfected and sterilized. The cleaning and disinfection process itself is relatively cumbersome, and the compact structure is accompanied by the hidden danger of insufficient disinfection. Therefore, the soft tissue dynamic balance measuring instrument of the present application is a disposable device to avoid the potential risks of repeated use.

[0054] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A soft tissue dynamic balance measuring instrument, characterized in that: The invention comprises a measuring component (1) for measuring stress and a plurality of stacked measuring pads (2) arranged at the bottom of the measuring component (1); at least two limiting protrusions (3) are arranged on one side of the measuring pad (2); at least two limiting grooves (4) are arranged on the other side of the measuring pad (2); the limiting protrusion (3) of one measuring pad (2) is inserted into the limiting groove (4) of the adjacent measuring pad (2); the relative sliding direction between the two adjacent measuring pads (2) is a reference direction; the protruding direction of the limiting protrusion (3) and the recessed direction of the limiting groove (4) both intersect with the reference direction.

2. The soft tissue dynamic balance measuring instrument according to claim 1, characterized in that: There is a clearance fit between the limiting groove (4) and the limiting protrusion (3).

3. The soft tissue dynamic balance measuring instrument according to claim 1, characterized in that: The bottom of the measuring component (1) is provided with the limiting groove (4), and the limiting protrusion (3) of the measuring gasket (2) adjacent to the measuring component (1) is inserted into the limiting groove (4) on the measuring component (1).

4. The soft tissue dynamic balance measuring instrument according to claim 1, characterized in that: There are three limiting protrusions (3) and three limiting grooves (4) on the measuring gasket (2), the three limiting protrusions (3) are arranged in a triangle, and the three limiting grooves (4) are arranged in a triangle.

5. The soft tissue dynamic balance measuring instrument according to claim 1, characterized in that: The measuring assembly (1) comprises a first handle portion (5) and a first measuring portion (6) which are connected to each other, and the first measuring portion (6) is U-shaped; the measuring pad (2) comprises a second handle portion (7) and a second measuring portion (8) which are connected to each other, and the second measuring portion (8) is U-shaped; the U-shaped first measuring portion (6) and the U-shaped second measuring portion (8) are connected to form a U-shaped cavity (9).

6. The soft tissue dynamic balance measuring instrument according to claim 1, characterized in that: The invention also comprises a circuit board (10), wherein a controller (11) is arranged on the circuit board (10), wherein the measuring assembly (1) comprises a measuring housing (12) and two pressure acquisition units (13), wherein the measuring housing (12) comprises a measuring base (14), wherein the pressure acquisition unit (13) comprises a pressure sensor (15) and a sliding member (16), wherein the pressure sensor (15) is arranged on the measuring base (14), wherein a sliding groove (17) is arranged on the measuring base (14), wherein the sliding member (16) is slidably arranged in the sliding groove (17), wherein one end of the sliding member (16) abuts against the pressure sensor (15), and the other end of the sliding member (16) forms an abutting end (18), and wherein the controller (11) is connected to the pressure sensor (15).

7. The soft tissue dynamic balance measuring instrument according to claim 6, characterized in that: The measuring housing (12) further comprises a measuring upper cover (19) connected to the measuring base (14); the pressure collecting unit (13) further comprises a contact member (20); the contact member (20) is slidably arranged on the measuring upper cover (19); the contact member (20) comprises a limiting portion (21) and a contact portion (22) which are connected to each other; the contact portion (22) extends to the outside of the measuring upper cover (19); one end of the limiting portion (21) is limited in the measuring upper cover (19); a compression spring (23) is arranged between the other end of the limiting portion (21) and the measuring base (14); a contact surface (24) is arranged on the limiting portion (21); the contact end (18) is in contact with or separated from the contact surface (24).

8. The soft tissue dynamic balance measuring instrument according to claim 6, characterized in that: The soft tissue dynamic balance measuring instrument also includes a display component, and the display component is communicatively connected to the controller (11).

9. The soft tissue dynamic balance measuring instrument according to claim 6, characterized in that: The sliding member (16) is spherical.

10. The soft tissue dynamic balance measuring instrument according to any one of claims 1 to 9, characterized in that: The soft tissue dynamic balance measuring instrument is a disposable device.

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