CN217696864U - Multifunctional knee joint gap balancer - Google Patents

Abstract

The utility model discloses a multi-functional knee joint clearance balancer, including dynamometry spreader and measurement locator, the one end of dynamometry spreader is connected with the connector, and the one end of connector is connected with the plug, and the other end of dynamometry spreader is connected with rotatory distraction piece and location distraction piece, and the dynamometry spreader is provided with the locating part with rotatory distraction piece, location distraction piece between, is provided with the rotation axis on the locating part. Multi-functional knee joint gap balancer, can the accurate measurement to the flexion and straighten the distance in clearance and the dynamics size that receives, whether can the accurate measurement to the medial and lateral collateral ligament balance under the prerequisite of the dynamics of certain numerical value, and guide the soft tissue release, can avoid the patella to block the influence to the flexion and the balance measurement in straightening the clearance, can direct assay thighbone outward turning angle guide operation osteotomy, reach the flexion and straighten the balance in clearance, can survey whether balanced tibial plateau force line, can measure tibial plateau back service angle.

Description

Multifunctional knee joint gap balancer

Technical Field

The utility model relates to a balancer field, in particular to multi-functional knee joint clearance balancer.

Background

The multifunctional knee joint gap balancer is supporting equipment for performing operation balance positioning, in the knee joint replacement operation process, when thighbone and shin bone are cut, the flexion and extension gaps of the knee joint need to be balanced relatively, the flexion and extension gaps are measured for gap blocks with fixed thickness by the existing measurement technology, meanwhile, the fixed angle is selected by the thighbone outward rotation angle to perform front and rear condyle cutting, and along with continuous development of science and technology, the manufacturing process requirement of people on the multifunctional knee joint gap balancer is higher and higher.

There is certain drawback in current multi-functional knee joint gap balancer when using, can't carry out the precision measurement to bucking and straightening clearance, the clearance measurement is received and is pull strength and rely on manual traction basically, and manual traction can't the accurate confirmation power value size, the outer side clearance carries out the precision balance when fixed angle's epitrochoid can't be to bucking, can't avoid the influence of kneecap upset to bucking clearance, the unable concrete measurement of shin bone hypsokinesis angle, the use of giving people has brought certain adverse effect, for this reason, we propose multi-functional knee joint gap balancer.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model is not enough to prior art, the utility model provides a multi-functional knee joint gap balancer, can accurate measurement to the distance in bucking and straightening clearance and the dynamics size that receives, can accurate measurement to whether balanced in the inboard collateral ligament under the prerequisite of the dynamics of certain numerical value, and guide the soft tissue to loosen, can avoid the patella to block the influence to the balance measurement in bucking and straightening clearance, can direct assay thighbone external rotation angle guide operation osteotomy, reach the balance in bucking and straightening clearance, can survey the tibial plateau force line whether balanced, can measure tibial plateau back service angle, can effectively solve the problem in the background art.

(II) technical scheme

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a multi-functional knee joint clearance balancer, includes dynamometry spreader and measurement locator, the one end of dynamometry spreader is connected with the connector, the one end of connector is connected with the plug, the other end of dynamometry spreader is connected with rotatory distraction piece and location distraction piece, be provided with the locating part between dynamometry spreader and rotatory distraction piece, the location distraction piece, be provided with the rotation axis on the locating part, dynamometry spreader middle part is provided with the locating lever, be connected with the spring bracket between rotatory distraction piece and the locating lever, the inboard of spring bracket is provided with the spring, the tip of location distraction piece is provided with the distraction locating rack, be provided with the round pin axle between location distraction piece and the distraction locating rack, be connected with the adjusting wire pole between locating lever and the location distraction piece, rotatory distraction piece front end is provided with the adjustable shelf.

Preferably, measure locator one end and install the location body, it struts the piece to be provided with the measurement locator on the locator to measure, the top of measuring the locator is provided with the spheroid, the front end of measuring the locator is provided with struts the piece support body, be provided with calibrated scale, locator on the measurement locator, the bottom of measuring the locator is provided with adjustment handle, locating pin and is used for the scale.

Preferably, for the state of strutting, strutting the regulation through spring frame and spring between rotatory piece of strutting and the location piece of strutting, and support the location through strutting the locating rack, the one end of rotatory piece of strutting is through the adjustable shelf and the one end of dynamometry spreader activity adjustment.

Preferably, the force measuring spreader and the positioning spreading piece are positioned through a limiting piece and a rotating shaft, and the end position of the positioning spreading piece moves through a pin shaft and the end of the spreading positioning frame.

Preferably, the measuring positioner and the strutting piece frame body are provided with a positioning piece, the front end of the measuring positioner is positioned through the positioning piece and one side of the strutting piece frame body, and the measuring positioner is positioned through the strutting piece of the measuring positioner.

Preferably, a detachable clamping seat is installed at one end of the opening positioning frame, an installation seat is installed between the detachable clamping seat and the opening positioning frame, a positioning groove is formed in the inner side of the installation seat, a positioning clamping pin penetrates through the installation seat and the positioning groove, and clamping teeth are fixed at the outer side positions of the opening positioning frame and the detachable clamping seat.

Preferably, the end part of the detachable clamping seat is fixedly connected with a soft body block, the end part of the soft body block is fixedly connected with sterilized cotton, and the position of the soft body block connected with the detachable clamping seat is fixedly connected with a positioning rubber pad.

Preferably, the front end of the spreading positioning frame is detachably connected with the rear end of the detachable clamping seat through a mounting seat, a positioning groove and a positioning clamping pin.

Preferably, the strutting positioning frame, the detachable clamping seat and the clamping teeth are integrally formed in a pouring processing mode.

Preferably, the inner side of the soft body block is positioned through the positioning rubber mat and the end part position of the detachable clamping seat, and the soft body block and the sterilized cotton are positioned in a gluing mode.

(III) advantageous effects

Compared with the prior art, the utility model provides a multi-functional knee joint clearance balancer possesses following beneficial effect: this multi-functional knee joint space balancer, can the accurate measurement to the distance in bucking and extension clearance and the dynamics size that receives, can the accurate measurement to whether balanced in the inboard collateral ligament under the prerequisite of the dynamics of certain numerical value, and guide the soft tissue release, can avoid the patella to block the balanced measurement's to bucking and extension clearance influence, can direct assay thighbone external rotation angle guide operation osteotomy, reach the balance in bucking and extension clearance, can survey the tibial plateau line of force whether balanced, can measure tibial plateau back office angle, whole multi-functional knee joint space balancer simple structure, high durability and convenient operation, the effect of using is better for traditional mode.

Drawings

Fig. 1 is a schematic view of the force-measuring spreader of the multifunctional knee joint gap balancer of the present invention.

Fig. 2 is a schematic structural diagram of a top view of the measuring locator in the multifunctional knee joint gap balancer of the present invention.

Fig. 3 is a schematic structural view of a front view of the measuring positioner in the multifunctional knee joint gap balancer of the present invention.

Fig. 4 is a schematic structural view of the distraction positioning frame in the multifunctional knee joint gap balancer of the present invention.

Fig. 5 is a schematic structural view of a detachable cartridge in the multifunctional knee joint gap balancer of the present invention.

Fig. 6 is a schematic structural view of the soft block in the multifunctional knee joint gap balancer of the present invention.

In the figure: 1. a force measuring spreader; 2. a connector; 3. a plug; 4. a rotating shaft; 5. adjusting the wire rod; 6. positioning a rod; 7. positioning the distraction plate; 8. a pin shaft; 9. opening the positioning frame; 10. a spring; 11. rotating the distraction plate; 12. a spring holder; 13. a movable frame; 14. a stopper; 15. a positioning body; 16. a measurement locator; 17. measuring a locator distraction piece; 18. a sphere; 19. opening the sheet frame body; 20. a dial; 21. a positioner; 22. an adjusting handle; 23. positioning pins; 24. a graduated scale; 25. a soft body block; 26. positioning the clamping pin; 27. a mounting seat; 28. a detachable card holder; 29. clamping teeth; 30. positioning a groove; 31. sterilizing cotton; 32. and positioning the rubber pad.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely below with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, but not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1-3, this embodiment provides a multifunctional knee joint gap balancer, which includes a force measurement distractor 1 and a measurement positioner 16, one end of the force measurement distractor 1 is connected with a connector 2, one end of the connector 2 is connected with a plug 3, the other end of the force measurement distractor 1 is connected with a rotary distraction piece 11 and a positioning distraction piece 7, a limiting piece 14 is disposed between the force measurement distractor 1 and the rotary distraction piece 11, and the positioning distraction piece 7, a rotation shaft 4 is disposed on the limiting piece 14, a positioning rod 6 is disposed in the middle of the force measurement distractor 1, a spring frame 12 is connected between the rotary distraction piece 11 and the positioning rod 6, a spring 10 is disposed inside the spring frame 12, an distraction positioning frame 9 is disposed at an end of the positioning distraction piece 7, a hinge pin 8 is disposed between the positioning distraction piece 7 and the distraction piece 9, an adjusting wire rod 5 is connected between the positioning rod 6 and the positioning distraction piece 7, and a movable frame 13 is disposed at a front end of the rotary distraction piece 11.

Furthermore, a positioning body 15 is installed at one end of the measuring positioner 16, a measuring positioner expanding sheet 17 is arranged on the measuring positioner 16, a sphere 18 is arranged at the top of the measuring positioner 16, an expanding sheet frame body 19 is arranged at the front end of the measuring positioner 16, a dial 20 and a positioner 21 are arranged on the measuring positioner 16, and an adjusting handle 22 and a positioning pin 23 for a graduated scale 24 are arranged at the bottom of the measuring positioner 16.

Furthermore, the opening state is formed between the rotary opening sheet 11 and the positioning opening sheet 7, the opening adjustment is performed through the spring frame 12 and the spring 10, the opening positioning is performed through the opening positioning frame 9, and one end of the rotary opening sheet 11 is movably adjusted through the movable frame 13 and one end of the force measuring opener 1.

Furthermore, the force measuring spreader 1 and the positioning spreader 7 are positioned with the rotating shaft 4 through the limiting member 14, and the end position of the positioning spreader 7 moves with the end of the spreading positioning frame 9 through the pin shaft 8.

Further, a positioning member is arranged between the measurement positioner 16 and the distraction piece frame body 19, the front end of the measurement positioner 16 is positioned at one side of the distraction piece frame body 19 through the positioning member, and the measurement positioner 16 is positioned through the measurement positioner distraction piece 17.

The second embodiment:

as shown in fig. 1-6, this embodiment provides a multifunctional knee joint gap balancer, which includes a force-measuring distracter 1 and a measuring positioner 16, one end of the force-measuring distracter 1 is connected with a connector 2, one end of the connector 2 is connected with a plug 3, the other end of the force-measuring distracter 1 is connected with a rotary distraction piece 11 and a positioning distraction piece 7, a limiting piece 14 is disposed between the force-measuring distracter 1 and the rotary distraction piece 11, and between the positioning distraction piece 7, a rotating shaft 4 is disposed on the limiting piece 14, a positioning rod 6 is disposed in the middle of the force-measuring distracter 1, a spring holder 12 is connected between the rotary distraction piece 11 and the positioning rod 6, a spring 10 is disposed inside the spring holder 12, an distraction positioning frame 9 is disposed at an end of the positioning distraction piece 7, a pin shaft 8 is disposed between the positioning distraction piece 7 and the distraction frame 9, an adjusting wire rod 5 is connected between the positioning rod 6 and the positioning distraction piece 7, and a movable frame 13 is disposed at a front end of the rotary distraction piece 11.

Furthermore, prop open the one end of locating rack 9 and install removable cassette 28, removable cassette 28 and prop open and install mount pad 27 between the locating rack 9, the inboard of mount pad 27 is provided with constant head tank 30, and mount pad 27 and constant head tank 30's position runs through and has the location bayonet lock 26, props open the outside position of locating rack 9 and removable cassette 28 and all is fixed with latch 29.

Furthermore, the end of the detachable clamping seat 28 is fixedly connected with a soft body block 25, the end of the soft body block 25 is fixedly connected with a sterilized cotton 31, and the position of the soft body block 25 connected with the detachable clamping seat 28 is fixedly connected with a positioning rubber pad 32.

Furthermore, the front end of the distraction positioning frame 9 is detachably connected with the rear end of the detachable clamping seat 28 through the mounting seat 27, the positioning groove 30 and the positioning clamping pin 26.

Furthermore, the opening positioning frame 9, the detachable clamping seat 28 and the clamping teeth 29 are integrally formed in a pouring processing mode.

Further, the inner side of the soft block 25 is positioned by the positioning rubber pad 32 and the end position of the detachable clamping seat 28, and the soft block 25 and the sterilized cotton 31 are positioned by gluing.

The working principle is as follows: the utility model comprises a force measuring spreader 1, a connector 2, a plug 3, a rotating shaft 4, an adjusting wire rod 5, a positioning rod 6, a positioning spreading sheet 7, a pin shaft 8, a spreading positioning frame 9, a spring 10, a rotating spreading sheet 11, a spring frame 12, a movable frame 13, a positioning part 14, a positioning body 15, a measuring positioner 16, a measuring positioner spreading sheet 17, a ball 18, a spreading sheet frame body 19, a dial 20, a positioner 21, an adjusting handle 22, a positioning pin 23, a graduated scale 24, a soft body block 25, a positioning bayonet lock 26, a mounting seat 27, a detachable clamping seat 28, a latch 29, a positioning groove 30, sterilized cotton 31 and a positioning rubber pad 32, wherein the measuring positioner spreading sheet is locked with two gears, one gear is rotatable, the other gear is fixed, the rotation can realize the measurement of the external rotation angle of the femur by means of the force measuring spreader, and can determine the pressure values at a certain external rotation angle of the femur and flexion clearance distance, the fixed gear can realize the distance measurement of the flexion and extension gaps after the resection of the femoral condyle or the resection of the distal femur and the tibial plateau, the design of a rotating shaft of the distraction piece can accurately and sensitively feed back the angle, the design of C-shaped radian can avoid the influence of the patella on the flexion and extension gaps, the measurement is more accurate, the setting of an inner dial can accurately read the angle and avoid the arrangement of matched tools between condyles, a height locking mechanism can reach 1 mm/lattice, the accurate adjustment is realized, a tibial force line rod can accurately observe a tibial force line and measure the platform back-tilting angle, a force measurement parallel distractor is in a parallel state at any height, the damage of a non-parallel state to sclerotin is effectively reduced, the design of force measurement is provided, the height and force value are accurately measured, the design of parallel head insertion pieces is realized, a plug can be changed, the plane-parallel device can be directly distracted, and the extension gap can also be directly and simply measured by matching with the plug, the four-in-one osteotomy positioning device can be matched with instruments of various manufacturers to carry out four-in-one osteotomy positioning, the position of the dynamometry spreader 1 is designed to be parallel spreading, no matter what state the top end is in, two sides are always in a parallel state and are realized by internal parts of the dynamometry spreader 1, the rotating shaft combination design is adopted, the movable frame 13, the limiting part 14 and the positioning spreading pieces 7 are connected through the rotating shaft 4 in a design mode, a spring frame 12 and a spring 10 are arranged, spring force detection is carried out, a scale assembly is arranged on the spring frame 12, pressure scales are arranged above the spring frame 12, distance scales are arranged below the spring frame, when the rotating spreading pieces 11 and the positioning spreading pieces 7 are spread, the spring frame 28 and the clamping teeth 29 are used for positioning, the detachable clamping seat 28 can be detached from the position of the spreading positioning frame 9 through the mounting seat 27, the four-in-one-out osteotomy positioning device is suitable for more spreading distances, and the soft body block 25 is convenient for protection.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a multi-functional knee joint gap balancer, includes dynamometry strut ware (1) and measures locator (16), its characterized in that: the one end of dynamometry spreader (1) is connected with connector (2), the one end of connector (2) is connected with plug (3), the other end of dynamometry spreader (1) is connected with rotatory opening piece (11) and location opening piece (7), be provided with between dynamometry spreader (1) and rotatory opening piece (11), the location opening piece (7) locating part (14), be provided with rotation axis (4) on locating part (14), dynamometry spreader (1) middle part is provided with locating lever (6), be connected with spring bracket (12) between rotatory opening piece (11) and locating lever (6), the inboard of spring bracket (12) is provided with spring (10), the tip of location opening piece (7) is provided with and struts locating rack (9), be provided with round pin axle (8) between location opening piece (7) and the location opening piece (9), be connected with between locating lever (6) and the location opening piece (7) and adjust the wire pole (5), rotatory opening piece (11) front end is provided with adjustable shelf (13).

2. The multi-functional knee joint gap balancer of claim 1, wherein: it installs location body (15) to measure locator (16) one end, it struts piece (17) to be provided with the measurement locator on locator (16) to measure, the top of measuring locator (16) is provided with spheroid (18), the front end of measuring locator (16) is provided with struts piece support body (19), be provided with calibrated scale (20), locator (21) on measuring locator (16), the bottom of measuring locator (16) is provided with adjustment handle (22), locating pin (23) and is used for scale (24).

3. The multi-functional knee joint gap balancer of claim 1, wherein: for the state of strutting between rotatory piece (11) and the location piece (7) of strutting, strut the regulation through spring bracket (12) and spring (10), and support the location through strutting locating rack (9), the one end of rotatory piece (11) of strutting is passed through adjustable shelf (13) and is carried out the activity regulation with the one end of dynamometry spreader (1).

4. The multi-functional knee joint gap balancer of claim 1, wherein: the force measuring spreader (1) and the positioning spreading piece (7) are positioned through the limiting piece (14) and the rotating shaft (4), and the end part position of the positioning spreading piece (7) moves through the pin shaft (8) and the end part of the spreading positioning frame (9).

5. The multi-functional knee joint gap balancer of claim 2, wherein: a positioning piece is arranged between the measuring positioner (16) and the strutting piece frame body (19), the front end of the measuring positioner (16) is positioned at one side of the strutting piece frame body (19) through the positioning piece, and the measuring positioner (16) is positioned through the strutting piece (17) of the measuring positioner.

6. The multi-functional knee joint gap balancer of claim 1, wherein: the utility model discloses a fixing device for fixing a card, including strutting the locating rack (9), strut the one end of locating rack (9) and install removable cassette (28), removable cassette (28) and strut and install mount pad (27) between locating rack (9), the inboard of mount pad (27) is provided with constant head tank (30), mount pad (27) and the position of constant head tank (30) run through there is location bayonet lock (26), the outside position that struts locating rack (9) and removable cassette (28) all is fixed with latch (29).

7. The multi-functional knee joint gap balancer of claim 6, wherein: the end part of the detachable clamping seat (28) is fixedly connected with a soft block (25), the end part of the soft block (25) is fixedly connected with sterilized cotton (31), and the position of the soft block (25) connected with the detachable clamping seat (28) is fixedly connected with a positioning rubber pad (32).

8. The multi-functional knee joint gap balancer of claim 6, wherein: the front end of the strutting positioning frame (9) is detachably connected with the rear end of the detachable clamping seat (28) through a mounting seat (27), a positioning groove (30), a positioning clamping pin (26).

9. The multi-functional knee joint gap balancer of claim 6, wherein: the opening positioning frame (9), the detachable clamping seat (28) and the clamping teeth (29) are integrally formed in a pouring processing mode.

10. The multi-functional knee joint gap balancer of claim 7, wherein: the inner side of the soft body block (25) is positioned through a positioning rubber mat (32) and the end part position of the detachable clamping seat (28), and the soft body block (25) and the sterilized cotton (31) are positioned in a gluing mode.

Images