CN111759288A

CN111759288A - Joint soft tissue balance measuring device

Info

Publication number: CN111759288A
Application number: CN202010774744.4A
Authority: CN
Inventors: 毛联甲; 孙彦实; 李志疆; 魏崇斌
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-10-13

Abstract

The invention provides a joint soft tissue balance measuring device, comprising: the base body comprises a main body and a placing platform arranged on the main body, wherein the side wall of the main body is provided with a first scale mark; the moving piece is movably arranged in the main body in a penetrating mode, and a second scale mark and a first indicating structure matched with the first scale mark are arranged on the side wall of the moving piece; the swinging piece is arranged on the moving piece in a penetrating mode in a swinging mode and located above the placing platform, the swinging piece comprises a swinging body and a second indicating structure, and the second indicating structure is arranged on the swinging body and matched with the second scale mark; the driving piece drives the moving piece to move up and down; the locking structure is arranged on the main body and provided with a locking position and an unlocking position, and when the locking structure is located at the locking position, one part of the locking structure is in butt fit with the moving piece to lock the moving piece. The technical scheme of this application has solved the problem of the easy whereabouts of lifter among the correlation technique effectively.

Description

Joint soft tissue balance measuring device

Technical Field

The invention relates to the field of medical instruments for orthopedics, in particular to a joint soft tissue balance measuring device.

Background

Along with the wide application and the continuous development of the artificial knee joint replacement, the requirement of doctors on the accuracy of the joint replacement surgery process is higher and higher, so that the success rate of the artificial joint replacement is improved, the surgery risk is reduced, the rehabilitation index of patients is improved, and the surgery experience is improved. This not only requires the surgical tools for artificial joint replacement to be manufactured precisely; the design concept of the surgical tool for the artificial joint replacement surgery is advanced, and more accurate information can be fed back to the doctor, so that the doctor can make accurate judgment and the success of the surgery is guaranteed.

In the related art artificial knee joint replacement surgery, osteotomy using a gap balance osteotomy is a well-established surgical technique. The method generally comprises a special gap balance measuring tool, wherein the gap balance measuring tool comprises a fixed flat plate positioned at the tibia side, a lifting rod arranged on the fixed flat plate in a penetrating mode, a rotating flat plate positioned at the tibia side and connected with the lifting rod, a driving wheel driving the lifting rod to move relative to the fixed flat plate and a ratchet wheel mechanism preventing the driving wheel from rotating. The fixed flat plate is used as a reference, the driving wheel drives the lifting rod to move, the rotating flat plate is located at the position for measuring the external rotation angle or the valgus angle of the femoral condyle, the ratchet mechanism can prevent the driving wheel from rotating, and the rotating flat plate is stopped at the position for measuring the external rotation angle or the valgus angle of the femoral condyle and is used for measuring the external rotation angle or the valgus angle of the femoral condyle. After obtaining accurate bone characterization data, the surgeon will choose to resect the posterior condyle of the femoral condyle, typically 9mm, to achieve prosthesis installation.

However, in the process of preventing the driving wheel from rotating by the ratchet mechanism, a force arm is generated between the ratchet mechanism and the lifting rod, so that the counter force applied by the lifting rod to the ratchet mechanism is relatively large, the effect of preventing the driving wheel from rotating by the ratchet mechanism is relatively poor, and the lifting rod is easy to fall.

Disclosure of Invention

The invention mainly aims to provide a joint soft tissue balance measuring device to solve the problem that a lifting rod in the related art is easy to fall.

In order to achieve the above object, the present invention provides a joint soft tissue balance measuring device, comprising: the base body comprises a main body and a placing platform arranged on the main body, wherein the side wall of the main body is provided with a first scale mark; the moving piece is movably arranged in the main body in a penetrating mode, and a second scale mark and a first indicating structure matched with the first scale mark are arranged on the side wall of the moving piece; the swinging piece is arranged on the moving piece in a penetrating mode in a swinging mode and located above the placing platform, the swinging piece comprises a swinging body and a second indicating structure, and the second indicating structure is arranged on the swinging body and matched with the second scale mark; the driving piece drives the moving piece to move up and down; the locking structure is arranged on the main body and provided with a locking position and an unlocking position, and when the locking structure is located at the locking position, one part of the locking structure is in butt fit with the moving piece to lock the moving piece.

Further, be provided with first mounting hole in the main part, second mounting hole and installation space all communicate with first mounting hole, the second mounting hole is worn to locate by the driving piece, the moving member is including removing the body and setting up the supporting part on removing the body, remove the body and wear to locate first mounting hole, first instruction structure sets up in removing the body, the supporting part is worn to locate by a part of swing body, be provided with the scale plate on the lateral wall of supporting part, the second scale mark sets up on the scale plate, locking structure movably sets up in installation space and can be in latched position.

Further, the locking structure comprises a force application member and a locking member, the force application member is pivotally arranged in the installation space, the locking member is movably arranged in the installation space, and the force application member applies force to the locking member so that the locking member can lock the movable body.

Further, the locking piece and the removal body between be provided with the tooth structure, the tooth structure including the cooperation tooth and with cooperation tooth butt complex locking tooth, the cooperation tooth includes a plurality of tooth portions, one setting in cooperation tooth and the locking tooth is on removing the body, another setting is on the locking piece, when locking tooth and different tooth portion cooperations, removes the body and is in different latched positions for the locking piece.

Further, the installation space includes mounting groove and third mounting hole, the axis of the axis perpendicular to of the first mounting hole of third mounting hole, mounting groove and third mounting hole intercommunication, third mounting hole and first mounting hole intercommunication, and the application of force piece sets up in the mounting groove, and the locking piece is located the third mounting hole.

Further, the installation space still includes the spring mounting hole with the mounting groove intercommunication, the axis of spring mounting hole perpendicular to the axis of the first mounting hole, and locking structure still includes the elastic component that sets up in the spring mounting hole, and the both ends of elastic component butt respectively in the tip and the application of force piece of spring mounting hole.

Further, the force application piece comprises a pressing section, a pivoting section and a propping section, the pressing section is located on the outer side of the main body, the pivoting section is pivotally connected to the inner wall of the installation space through a pivot, and the propping section props against the locking piece.

Further, the force application part also comprises an avoiding section connected between the pivoting section and the abutting section, the abutting section is provided with a convex cambered surface, and the avoiding section is provided with a concave cambered surface.

Furthermore, the locking piece is a locking column, the locking teeth are arranged at the end part of the locking column, a pressing hole is formed in the locking column, the axis of the pressing hole is parallel to the axis of the first mounting hole, and the abutting section extends into the pressing hole and abuts against the hole wall of the pressing hole.

Furthermore, the driving piece drives the moving piece to move through the transmission structure, and the transmission structure and the locking structure are respectively located on two sides of the moving piece.

Further, the joint soft tissue balance measuring device also comprises a torque wrench driving the driving piece to rotate, the torque wrench comprises an indicating disc, and the distance between two adjacent scales on the indicating disc is marked as 10N.

By applying the technical scheme of the invention, the joint soft tissue balance measuring device comprises: the locking mechanism comprises a base body, a moving piece, a swinging piece, a driving piece and a locking structure. The base member includes the main part and sets up the place the platform in the main part, is provided with first scale mark on the lateral wall of main part. The main part is worn to locate by the movable piece is movably, is provided with the second scale mark on the lateral wall of movable piece and with the first instruction structure of first scale mark complex. The swing piece can be swung and worn to locate the moving piece and be located place the platform's top, and the swing piece is including swing body and second indication structure, and second indication structure sets up on the swing body and with the cooperation of second scale mark. The driving piece drives the moving piece to move up and down. The locking structure is arranged on the main body and provided with a locking position and an unlocking position, and when the locking structure is located at the locking position, one part of the locking structure is in butt fit with the moving piece to lock the moving piece. Like this, locking structure directly locks the moving member, does not have the arm of force that produces between ratchet and the lifter among the correlation technique between locking structure and the moving member, and the counter force that the moving member applyed to locking structure is less, has reduced the possibility that locking structure and moving member take place to separate. Meanwhile, the movable piece is directly locked by the locking structure, the movable piece does not need to be locked by the driving piece, and the falling reliability of the movable piece is prevented from being higher. Therefore, the technical scheme of the application does not need to lock the lifting rod through the driving wheel by the ratchet mechanism in the related art, and the lifting rod is indirectly prevented from falling. Therefore, the technical scheme of this application has solved the problem that the lifter among the correlation technique falls easily effectively.

Drawings

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

FIG. 1 shows a partially exploded schematic view of an embodiment of a joint soft tissue balance measurement device according to the present invention;

FIG. 2 is a perspective view of the device of FIG. 1 with the torque wrench removed;

FIG. 3 is a schematic view of the joint soft tissue balance measuring device of FIG. 1 shown in an exploded configuration with the torque wrench removed;

FIG. 4 shows a perspective view of the joint soft tissue balance measuring device of FIG. 1 with the torque wrench and the filler block removed;

FIG. 5 shows a schematic front view of the joint soft tissue balance measurement device of FIG. 1 placed in a straightened position of the knee joint;

FIG. 6 shows a schematic front view of the joint soft tissue balance measurement device of FIG. 1 positioned at a knee flexion position of a knee joint;

FIG. 7 shows a cross-sectional schematic view of the joint soft tissue balance measurement device of FIG. 4 at a first cut-away location;

FIG. 8 shows a cross-sectional schematic view of the joint soft tissue balance measurement device of FIG. 4 at a second cut-away location;

FIG. 9 shows a perspective view of the base of the joint soft tissue balance measurement device of FIG. 1;

FIG. 10 shows a schematic left side view of the base of the joint soft tissue balance measurement device of FIG. 9;

FIG. 11 shows a schematic cross-sectional view of the base of the joint soft tissue balance measurement device of FIG. 9;

FIG. 12 shows a perspective view of a force applying member of the joint soft tissue balance measuring device of FIG. 1;

FIG. 13 shows a side view schematic of the force applying member of the joint soft tissue balance measuring device of FIG. 12;

FIG. 14 shows a perspective view of the locking member of the joint soft tissue balance measuring device of FIG. 1 in a first position; and

figure 15 shows a perspective view of the locking member of the joint soft tissue balance measuring device of figure 1 in a second position.

Wherein the figures include the following reference numerals:

101. the left ligament; 102. the right ligament; 10. a substrate; 11. a main body; 111. a first scale mark; 112. a through hole; 113. a first mounting hole; 114. a through groove; 115. mounting grooves; 116. a third mounting hole; 117. a second mounting hole; 118. a spring mounting hole; 12. placing a platform; 20. a reference bar; 30. a moving member; 31. a second scale mark; 32. a first indicating structure; 33. moving the body; 34. a support portion; 35. a scale plate; 40. a swinging member; 41. swinging the body; 42. a second indicating structure; 50. a drive member; 61. a transmission structure; 611. a first drive tooth; 612. a second gear; 43. a rotating shaft; 35. a scale plate; 71. a force application member; 711. a pressing section; 712. a pivot section; 713. a top abutting section; 714. an avoidance section; 721. pressing the hole; 72. a locking member; 73. matching teeth; 74. a locking tooth; 75. an elastic member; 76. a pivot; 80. filling blocks; 90. a torque wrench; 91. an indicator panel.

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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 7, the joint soft tissue balance measuring device of the present embodiment includes: base 10, moving member 30, oscillating member 40, driving member 50, and locking structure. The base body 10 includes a main body 11 and a placing platform 12 disposed on the main body 11, and a first scale mark 111 is disposed on a sidewall of the main body 11. The moving member 30 movably penetrates through the main body 11, and a second scale mark 31 and a first indication structure 32 matched with the first scale mark 111 are arranged on a side wall of the moving member 30. The swinging piece 40 is swingably inserted through the moving piece 30 and located above the placing platform 12, the swinging piece 40 includes a swinging body 41 and a second indicating structure 42, and the second indicating structure 42 is arranged on the swinging body 41 and is matched with the second scale mark 31. The driving member 50 drives the moving member 30 to move up and down. The locking structure is arranged on the main body 11, and the locking structure has a locking position and an unlocking position, and when the locking structure is in the locking position, a part of the locking structure is in butt fit with the moving member 30 to lock the moving member 30.

With the solution of the present embodiment, the driving element 50 drives the moving element 30 to move up and down. The locking structure is arranged on the main body 11, and the locking structure has a locking position and an unlocking position, and when the locking structure is in the locking position, a part of the locking structure is in butt fit with the moving member 30 to lock the moving member 30. Thus, the locking structure directly locks the moving member 30, a moment arm generated between the ratchet mechanism and the lifting rod in the related technology does not exist between the locking structure and the moving member 30, the counter force applied by the moving member 30 to the locking structure is small, and the possibility of separation of the locking structure and the moving member 30 is reduced. Meanwhile, since the locking structure directly locks the moving member 30, the locking of the moving member 30 by the driving member 50 is not required, and the reliability of preventing the moving member from falling is higher. Therefore, the technical scheme of the embodiment does not need to lock the lifting rod by the driving wheel through the ratchet mechanism in the related art, and the lifting rod is indirectly prevented from falling. Therefore, the technical scheme of the embodiment effectively solves the problem that the lifting rod in the related art is easy to fall.

As shown in fig. 3 to 7, the main body 11 is provided with a first mounting hole 113, a second mounting hole 117, and a mounting space. The second mounting hole 117 and the mounting space are both communicated with the first mounting hole 113, and the driving member 50 is arranged through the second mounting hole 117. The first mounting hole 113 is provided to guide the moving body 33. The moving member 30 includes a moving body 33 and a support portion 34 provided on the moving body 33. As shown in fig. 3 and 4, the swing body 41 is provided with a rotating shaft 43, and the support portion 34 is provided with a rotating hole engaged with the rotating shaft 43, so that the rotating shaft 43 can rotate in the rotating hole, so that the rotating shaft 43 of the swing body 41 swings around the support portion 34. The swinging body 41 of the present embodiment is a swinging plate.

As shown in fig. 3 to 7, the moving body 33 is inserted into the first mounting hole 113, the first indicating structure 32 is disposed on the moving body 33, and a portion of the swinging body 41 is inserted into the supporting portion 34. A scale plate 35 is provided on a side wall of the support portion 34, and the second scale line 31 is provided on the scale plate 35. The arrangement of the scale 35 can serve as a carrier for the arrangement of the second graduation marks 31. Specifically, the scale plate 35 is provided with a long hole, the end of the second indication structure 42 extends into the long hole, the end of the second indication structure 42 is provided with a slot, and the slot width of the slot is equal to the line width of the second scale mark 31. The locking structure is movably arranged in the installation space and can be in a locking position. The locking structure is positioned in the installation space and is conveniently positioned at the locking position, and meanwhile, the joint soft tissue balance measuring device is simple and compact in structure. The ends of the first and

second indicator structures

32, 42 are each preferably indicator posts.

As shown in fig. 7, 12 to 15, the locking structure includes an urging member 71 and a locking member 72. The urging member 71 is pivotably provided in the installation space, and the lock member 72 is movably provided in the installation space. The urging member 71 urges the lock member 72 so that the lock member 72 can lock the moving body 33. Thus, while the lock member 72 is ensured to have the effect of locking the moving body 33, the biasing member 71 can prevent the lock member 72 from retreating.

As shown in fig. 7, a tooth structure is provided between the lock member 72 and the moving body 33, and the tooth structure includes an engaging tooth 73 and a lock tooth 74 that is in abutting engagement with the engaging tooth 73. The mating teeth 73 comprise a plurality of tooth portions, the mating teeth 73 being provided on the moving body 33, the locking teeth 74 being provided on the locking member 72, the moving body 33 being in different locking positions relative to the locking member 72 when the locking teeth 74 are mated with different tooth portions. In this way, the mobile body 33 can be in different height positions to meet the requirement that the oscillating piece 40 fills up different osteotomy gap sizes.

Of course, in other embodiments not shown in the figures, the locking teeth are provided on the moving body and the mating teeth are provided on the locking element.

As shown in fig. 4 and 7, the installation space includes an installation groove 115 and a third installation hole 116. The axis of the third mounting hole 116 is perpendicular to the axis of the first mounting hole 113, the mounting groove 115 communicates with the third mounting hole 116, and the third mounting hole 116 communicates with the first mounting hole 113. The biasing member 71 is disposed in the mounting groove 115, and the locking member 72 is disposed in the third mounting hole 116. The installation groove 115 is formed to have a narrow gap to receive a portion of the biasing member 71, thereby preventing the biasing member 71 from being deflected during pivoting. The third mounting hole 116 is provided to allow the locking member 72 to move along a predetermined trajectory, thereby providing a guide function. Thus, one installation space can satisfy the installation requirements of the urging member 71 and the lock member 72. Meanwhile, the whole structure of the joint soft tissue balance measuring device is compact.

As shown in fig. 7, 9 to 11, the installation space further includes a spring installation hole 118 communicating with the installation groove 115, and an axis of the spring installation hole 118 is perpendicular to an axis of the first installation hole 113. The locking structure further includes an elastic member 75 disposed in the spring mounting hole 118, and both ends of the elastic member 75 respectively abut against the end of the spring mounting hole 118 and the urging member 71. The elastic member 75 can always abut against the urging member 71, so that the urging member 71 always keeps the state of abutting against the locking member 72, the locking member 72 can be in the locking position, and the locking member 72 can reliably lock the moving body 33. When the moving body 33 moves downward, the biasing member 71 is pressed, and at this time, the locking member 72 is separated from the moving body 33, and the locking member 72 can be located at the unlocking position, and the moving body 33 is moved downward. The spring mounting hole 118 is provided to confine the elastic member 75 within the main body 11, and the elastic member 75 is movable along the axis of the spring mounting hole 118, so that the elastic member 75 is less likely to tilt with respect to the axis of the elastic member 75. Meanwhile, the axis of the spring mounting hole 118 is perpendicular to the axis of the first mounting hole 113, so that the elastic member 75 can smoothly apply the elastic force. The spring mounting holes 118 of this embodiment are preferably blind holes. The elastic member 75 is preferably a spring.

As shown in fig. 7, 12 and 13, the force application member 71 includes a pressing section 711, a pivoting section 712 and an abutting section 713. The pressing section 711 is located at the outer side of the main body 11 for the convenience of the doctor. The pivoting section 712 is pivotally connected to the inner wall of the mounting space by the pivot 76, and the abutting section 713 abuts against the locking member 72. The pivoting section 712 is pivoted by the pivot 76, and can transmit the acting force of the pressing section 711 to the abutting section 713 to realize the lever principle. The arrangement of the abutting section 713 directly applies the force of the pressing section 711 to the lock member 72, so that the process of applying the force to the lock member 72 by the force applying member 71 is more stable. The pressing section 711 is preferably shaped like a circular cake. Thus, the doctor can operate more comfortably.

As shown in fig. 7, 12 and 13, the force application member 71 further includes a relief section 714 connected between the pivoting section 712 and the abutting section 713. The avoidance section 714 is provided to enable the biasing member 71 to avoid the locking member 72 and avoid interference therebetween, during the process of driving the locking member 72 by the biasing member 71. The abutting section 713 has a convex arc surface. The convex arc surface structure makes the contact area between the abutting section 713 and the locking member 72 smaller, the acting force applied to the locking member 72 by the abutting section 713 is concentrated, the abutting of the force applying member 71 is more stable, and the locking member 72 can more reliably lock the moving body 33. The avoidance segment 714 has a concave arc surface. The concave arc structure ensures the structure strength of the force application member 71 while the avoidance section 714 has an avoidance effect, so that the process of applying the force to the locking member 72 by the force application member 71 cannot deform.

As shown in fig. 7, 14 and 15, locking member 72 is a locking post. The shape and structure of the locking column are simple. The engagement of the locking post with the third mounting hole 116 can form a predetermined trajectory of the locking member 72, so that the locking member 72 can move along the predetermined trajectory, thereby providing a guiding function and making the movement of the locking member 72 more stable. The locking teeth 74 are provided at the end of a locking post, which is provided with a pressing hole 721. The axis of the pressing hole 721 is parallel to the axis of the first mounting hole 113, and the abutting section 713 extends into the pressing hole 721 and abuts against the hole wall of the pressing hole 721. The pressing hole 721 is provided to enable the locking member 72 to escape from the abutting section 713, and to further make the structure of the device for measuring the soft tissue balance of the joint compact and convenient to operate after the abutting section 713 extends into the pressing hole 721. The abutment section 713 can stop the lock body to prevent the lock member 72 from coming out of the third mounting hole 116.

As shown in fig. 4 and 7, the driving member 50 drives the moving member 30 to move through the transmission structure 61. Under the action of the transmission structure 61, the rotation of the driving member 50 can be transmitted to the moving body 33 to move the moving body 33 up and down. The axis of the second mounting hole 117 is perpendicular to the axis of the first mounting hole 113 so that the driving member 50 does not deflect when driving the moving body 33. The transmission structure 61 and the locking structure are respectively located at both sides of the moving member 30. Thus, there is no interference between the locking member 72 and the transmission structure 61 when they are operated separately or simultaneously.

As shown in fig. 7 and 8, the transmission structure 61 includes a first transmission tooth 611 and a second transmission tooth 612 engaged with the first transmission tooth 611, the first transmission tooth 611 is disposed on the driving member 50, and the second transmission tooth 612 is disposed on the moving body 33. The first and

second transmission teeth

611 and 612 cooperate to enable the driving member 50 to smoothly drive the moving body 33 to move up and down.

As shown in fig. 4 to 6, the main body 11 is further provided with a through slot 114 communicating with the first mounting hole 113, and the first indicating structure 32 is located in the through slot 114. The first indicator structure 32 is preferably a columnar structure.

The main body 11 is provided with a through hole 112, and the reference rod 20 is detachably inserted through the through hole 112. The through hole is convenient for placing the reference rod 20, and the hole wall of the through hole 112 can form a guide for the outer wall of the reference rod 20, so that the reference rod 20 can penetrate in or out conveniently.

As shown in figures 1-6, the placement platform 12 and the oscillating member 40 are placed in the osteotomy gap with the knee joint in the straightened position, and the reference rod 20 is used to measure whether the central axis of the placement platform 12 is aligned with the lower limb force line and adjusted to the coincident position. On this basis, drive moving member 30 through the driving piece and upwards remove, moving member 30 can drive oscillating piece 40 and upwards remove until being full of and cut the bone clearance to make oscillating piece 40 and thighbone condyle osteotomy face contact cooperation, at this moment, the corresponding scale on the directional first scale mark 111 of first instruction structure 32 obtains the knee joint and cuts bone clearance size when being in extension position, and the same reason can obtain the knee joint and cut bone clearance size when being in the position of bending knees. Meanwhile, when the knee joint is in the extended position, due to the different tension of the left ligament 101 and the right ligament 102, the swinging member swings around the moving member 30 under the action of the tension, and drives the second indicating structure 42 to point to the corresponding scale on the second scale mark 31, so as to obtain the eversion angle and the tensioning state of the left and right ligaments. The external rotation angle and the left and right ligament tensioning states of the knee joint at the knee bending position can be obtained in the same way. Thus, the reference rod 20 is used for measuring whether the central axis of the placing platform 12 is aligned with the lower limb force line or not and adjusting to the coincident position, so that the accuracy of numerical values obtained in the process of obtaining the size of the osteotomy gap, the eversion angle, the external rotation angle and the tension state of the left ligament and the right ligament is improved, the measurement error is greatly reduced, the detection precision is improved, and the measured numerical values are accurately obtained. After the size of the osteotomy gap, the eversion angle, the outward rotation angle and the tensioning states of the left ligament and the right ligament are obtained, whether the loosening degree of the left ligament and the right ligament needs to be adjusted or not can be intuitively and accurately judged. When needed, the looseness of the knee joint in the soft tissue is balanced. The joint soft tissue balance measuring device can perform osteotomy operation in the state of measuring the characteristic value of the specific femoral condyle, so that the operation is more accurate and scientific.

As shown in fig. 1 to 5, the joint soft tissue balance measuring device further includes a filling block 80 provided on the swing body 41. When the knee joint is in the extension position, the filling block 80 can fill the osteotomy gap, reduce the upward moving distance of the moving body 33, and is favorable for improving the efficiency of adjusting the size of the osteotomy gap.

As shown in fig. 1-6, the device for measuring the balance of soft tissue in a joint further comprises a torque wrench 90 for driving the driving member 50 to rotate. The torque wrench 90 includes an indicator disc 91, and the distance between two adjacent scales on the indicator disc 91 is marked as 10N. The torque wrench 90 drives the driving member 50 to rotate so that the swinging body 41 or the filling block 80 on the moving body 33 is in contact fit with the femoral condyle osteotomy surface, and the value on the indicating plate 91 is zero. When the torque wrench 90 is continuously rotated, the swinging body 41 or the filling block 80 applies an abutting force to the osteotomy surface of the femoral condyle, the swinging body 41 or the filling block 80 overcomes the gravity of the joint and then gradually moves upwards and pulls the left ligament and the right ligament until the left ligament and the right ligament are tensioned, if the swinging body 41 or the filling block 80 continuously applies force, the indication value of the indication plate 91 is gradually increased, and the torque force of the torque wrench 90 reflects the tensioning state of the left ligament and the right ligament, namely, the average tension force of the left ligament and the right ligament at the straightening position or the knee bending position is displayed. The distance between two adjacent scales on the indicator panel 91 is marked as 10N. Thus, the torque measurement range of the torque wrench 90 is 0-200N. The design of the torque wrench 90 with 10N as a unit is suitable for the tension range of the ligament of the human body, so that the torque wrench 90 can measure the tension of the left ligament and the right ligament more effectively.

The joint soft tissue balance measuring device of the application can also be used in orthopedic operations with similar requirements.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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.

Claims

1. A joint soft tissue balance measurement device, comprising:

the base body (10) comprises a main body (11) and a placing platform (12) arranged on the main body (11), wherein a first scale mark (111) is arranged on the side wall of the main body (11);

the moving piece (30) is movably arranged in the main body (11) in a penetrating mode, and a second scale mark (31) and a first indicating structure (32) matched with the first scale mark (111) are arranged on the side wall of the moving piece (30);

the swinging piece (40) can be arranged on the moving piece (30) in a penetrating mode in a swinging mode and located above the placing platform (12), the swinging piece (40) comprises a swinging body (41) and a second indicating structure (42), and the second indicating structure (42) is arranged on the swinging body (41) and matched with the second scale marks (31);

a driving member (50) for driving the moving member (30) to move up and down;

the locking structure is arranged on the main body (11) and has a locking position and an unlocking position, and when the locking structure is in the locking position, a part of the locking structure is in butt fit with the moving part (30) to lock the moving part (30).

2. The joint soft tissue balance measuring device according to claim 1, wherein the main body (11) is provided with a first mounting hole (113), a second mounting hole (117) and a mounting space, the second mounting hole (117) and the mounting space are both communicated with the first mounting hole (113), the driving member (50) is inserted into the second mounting hole (117), the moving member (30) comprises a moving body (33) and a supporting portion (34) provided on the moving body (33), the moving body (33) is inserted into the first mounting hole (113), the first indicating structure (32) is provided on the moving body (33), a portion of the swinging body (41) is inserted into the supporting portion (34), a scale plate (35) is provided on a side wall of the supporting portion (34), and the second scale mark (31) is provided on the scale plate (35), the locking structure is movably disposed within the mounting space and is capable of being in the locked position.

3. The joint soft tissue balance measurement device according to claim 2, wherein the locking structure comprises a force application member (71) and a locking member (72), the force application member (71) being pivotably arranged in the mounting space, the locking member (72) being movably arranged in the mounting space, the force application member (71) applying a force to the locking member (72) to enable the locking member (72) to lock the moving body (33).

4. The device according to claim 3, characterized in that a tooth structure is provided between the locking element (72) and the moving body (33), said tooth structure comprising an engagement tooth (73) and a locking tooth (74) in abutment engagement with the engagement tooth (73), said engagement tooth (73) comprising a plurality of teeth, one of the engagement tooth (73) and the locking tooth (74) being provided on the moving body (33) and the other on the locking element (72), said moving body (33) being in different locking positions with respect to the locking element (72) when the locking tooth (74) is engaged with different said teeth.

5. The articular soft tissue balance measurement device according to claim 3, characterized in that the mounting space comprises a mounting groove (115) and a third mounting hole (116), the axis of the third mounting hole (116) is perpendicular to the axis of the first mounting hole (113), the mounting groove (115) communicates with the third mounting hole (116), the third mounting hole (116) communicates with the first mounting hole (113), the force application member (71) is disposed in the mounting groove (115), and the locking member (72) is located in the third mounting hole (116).

6. The joint soft tissue balance measuring device according to claim 5, wherein the mounting space further comprises a spring mounting hole (118) communicated with the mounting groove (115), an axis of the spring mounting hole (118) is perpendicular to an axis of the first mounting hole (113), the locking structure further comprises an elastic member (75) arranged in the spring mounting hole (118), and two ends of the elastic member (75) abut against an end of the spring mounting hole (118) and the force applying member (71), respectively.

7. The articular soft tissue balance measurement device according to claim 4, characterized in that the force application member (71) comprises a pressing section (711), a pivoting section (712) and an abutting section (713), the pressing section (711) is located on the outer side of the main body (11), the pivoting section (712) is pivotally connected to the inner wall of the installation space by a pivot (76), and the abutting section (713) abuts against the locking member (72).

8. The device as claimed in claim 7, wherein the force application member (71) further comprises an avoiding section (714) connected between the pivoting section (712) and the abutting section (713), the abutting section (713) having a convex arc surface, and the avoiding section (714) having a concave arc surface.

9. The articular soft tissue balance measuring device according to claim 7, wherein the locking element (72) is a locking column, the locking tooth (74) is arranged at the end of the locking column, a pressing hole (721) is arranged on the locking column, the axis of the pressing hole (721) is parallel to the axis of the first mounting hole (113), and the abutting section (713) extends into the pressing hole (721) and abuts against the wall of the pressing hole (721).

10. The joint soft tissue balance measuring device according to claim 1, wherein the driving member (50) drives the moving member (30) to move through a transmission structure (61), and the transmission structure (61) and the locking structure are respectively located at both sides of the moving member (30).

11. The device according to claim 1, further comprising a torque wrench (90) for driving the driving member (50) to rotate, wherein the torque wrench (90) comprises an indicating plate (91), and the interval between two adjacent scales on the indicating plate (91) is 10N.