CN219070813U

CN219070813U - Knee joint director

Info

Publication number: CN219070813U
Application number: CN202223345934.8U
Authority: CN
Inventors: 熊杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-26
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to the technical field of auxiliary equipment for knee joint replacement surgery, in particular to a knee joint director, wherein a driving plate is hinged at a separation cavity at the left side of a handle, an air bag is abutted between the right side wall of the driving plate and the inner wall of the separation cavity, the air bag is communicated with an air bag arranged at the end part of a positioning rod, when the knee joint director is used, air in the air bag can be squeezed into the air bag by holding the driving plate, the air bag is abutted to the air bag to be rapidly positioned, the debugging time is shortened, and meanwhile, the operation requirement on doctors is reduced; the right-hand member articulates on the mounting bracket has the linking arm, and the linking arm left side is equipped with the clamp plate, when holding the drive plate, and the drive plate drives the linking arm and deflects in opposite directions, clamp plate and locating lever pin joint separation, after confirming the setpoint, loosen the drive plate, the clamp plate resets and support again on the pin joint of locating lever, and is spacing with the locating lever, so when doctor's reading, can not cause equipment to rock because of the problem such as bending over, hand tremble for the locating lever skew influences the reading, guarantees the accuracy of reading, ensures the accuracy of force line location.

Description

Knee joint director

Technical Field

The utility model relates to the technical field of auxiliary equipment for knee joint replacement surgery, in particular to a knee joint director.

Background

Total knee arthroplasty is an artificial joint replacement surgery, which refers to an operation treatment method for cutting off joint surfaces of a body which cannot be repaired by oneself, replacing damaged joints with artificial joint components, correcting limb force lines, eliminating knee joint pain, maintaining joint stability and restoring knee joint functions, wherein the aim is to restore lower limb load force lines, restore knee joint stability, eliminate knee joint pain and reconstruct knee joint functions, lower limb force line errors are main causes of operation failure, and poor alignment can lead to disturbance of load conduction and abrasion and looseness of a frame body;

when the total knee replacement operation is performed, the femoral marrow cavity force line of a patient needs to be positioned, the ideal position of the intramedullary rod for being placed in the intramedullary cavity is a straight line intersecting two equally divided surfaces of the femur in the coronal plane and the sagittal plane, and the accurate limb force line not only promotes good recovery of the knee joint function, but also can reduce the pressure of a gasket and delay abrasion. The existing device for positioning the femoral marrow cavity force line of the total knee arthroplasty has simple structure and poor positioning effect, is limited by the current surgical instruments, and in the current total knee arthroplasty, the determination of the intraoperative marrow expanding point is mostly based on the experience of doctors, so that the marrow cavity rod inevitably deviates from the limb force line under an ideal state, and even if the marrow cavity rod deviates from the ideal marrow expanding point by a small distance, the finally generated force line error can cause serious consequences; in addition, after the intramedullary rod is inserted, the hands which need to be kept in operation by medical staff are kept stable, and then the pointing scale of the pointer is observed, so that the deflection angle, namely the position, of the force line in the intramedullary cavity is obtained, however, when the hands shake during reading, the tail end of the intramedullary rod can deviate due to touching the intramedullary wall, and the reading has errors.

Therefore, the utility model provides a knee joint director which is used for solving the problems that the existing marrow cavity rod is not easy to position and has high operation requirement.

Disclosure of Invention

Aiming at the situation, the utility model aims to overcome the defects of the prior art and provide the knee joint director which effectively solves the problems in the background art.

The technical scheme is that:

the utility model provides a knee joint director, a serial communication port, which comprises a mounting rack, mounting bracket right-hand member below is fixed with the handle, be equipped with left side open-ended mouth in the handle left end, it has the drive plate to articulate in the open-ended mouth, be equipped with the top spring between drive plate right side wall and the open-ended intracavity wall, the coaxial actuating lever that is fixed with of drive plate, the actuating lever end is fixed with the stay cord, be located the opening that is equipped with the upper and lower opening that runs through above the actuating lever on the mounting bracket, be connected with the driven lever articulated on mounting panel upper end right side after the stay cord passes the opening, the driven lever is coaxial to be fixed with the linking arm, be equipped with the torsional spring between linking arm and the mounting bracket, the linking arm left side is equipped with the clamp plate, the mounting panel is located the clamp plate below and articulates there is the carousel, carousel right side wall is fixed with the pointer, the mounting bracket surface is equipped with pointer, the dead lever left side is equipped with the sacculus in the locating lever, be equipped with the air flue with the sacculus intercommunication in the locating lever, the right side wall is located the top spring top, the gasbag is supported on the open-ended intracavity wall.

Preferably, the rotary table bottom end is fixed with the pivot, and the mounting bracket surface is equipped with the rotation groove, and the pivot is installed in the rotation groove rotation.

Preferably, the right end of the air passage penetrates into the rotary table and penetrates out from the center of the bottom end of the rotary shaft, a channel is arranged in the mounting frame, the left end of the channel is communicated with the air passage through a rotary joint, and the right end of the channel is communicated with the right side of the air bag through an air pipe.

Preferably, the balloon is disposed about a locating rod axis.

Preferably, the balloon is elliptical.

Preferably, the right side of the upper end of the mounting frame is provided with a support, and the connecting arm is rotatably arranged on the support.

Preferably, the left end of the positioning rod is positioned on the outer wall inside the balloon, a plurality of ventilation holes are uniformly distributed on the outer wall, and all the ventilation holes are communicated with the air passage.

Preferably, the upper end face of the rotary table is provided with a groove, the bottom end of the pressing plate is in a sphere-like shape corresponding to the groove, and friction layers are arranged at contact positions of the groove and the bottom end of the pressing plate.

Preferably, the connecting arm is shaped like a Chinese character 'kou'.

The utility model has the beneficial effects that: the utility model has the advantages that the driving plate is hinged at the separation cavity at the left side of the handle, the air bag is abutted between the right side wall of the driving plate and the inner wall of the separation cavity, and the air bag is communicated with the air bag arranged at the end part of the positioning rod;

the right-hand member articulates on the mounting bracket has the linking arm, the linking arm is connected and rotates in opposite directions with the drive plate, the linking arm left side is located and is equipped with the clamp plate directly over the locating lever pin joint, after the locating lever inserts the marrow chamber, hold the drive plate, the drive plate also can drive the linking arm and deflect in opposite directions when extrudeing the gasbag, clamp plate and locating lever pin joint separation, after confirming the setpoint, loosen the drive plate, the sacculus is retracted and is convenient for extract, the clamp plate resets and support again on the pin joint of locating lever simultaneously, thereby it is spacing with the locating lever, so when doctor's reading, can not lead to the fact equipment to rock because of the problem such as nodding, hand tremble, make the locating lever skew and influence the reading, guarantee the accuracy of reading, ensure the accuracy of force line location.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic top view of the present utility model.

FIG. 3 is a schematic cross-sectional view at A-A of FIG. 2 of the present utility model.

FIG. 4 is a schematic illustration of the connection of the platen and the drive plate of the present utility model.

Fig. 5 is a schematic view of the platen in an initial state of the present utility model.

FIG. 6 is a schematic view of the platen condition when looking for a force line in accordance with the present utility model.

In the figure: the device comprises a mounting frame 1, a handle 2, a driving plate 3, a top spring 4, a driving rod 5, a pull rope 6, a driven plate 7, a connecting arm 8, a pressing plate 9, a rotary disc 10, a pointer 11, an angle gauge 12, a positioning rod 13, a balloon 14, an air passage 15, a passage 16, an air pipe 17 and an air bag 18.

Detailed Description

The following describes the embodiments of the present utility model in further detail with reference to fig. 1 to 6.

In order to solve the problems existing in the prior art, a knee joint director is provided 1 and is characterized by comprising a mounting frame 1, a handle 2 is fixed below the right end of the mounting frame 1, an open cavity with a left opening is arranged in the left end of the handle 2, a driving plate 3 is hinged in the open cavity, a right opening separation cavity is arranged in the driving plate 3, a top spring 4 is arranged between the right side wall of the driving plate 3 and the inner wall of the open cavity, the left end of the top spring 4 is propped against the side wall of the separation cavity, the right end is propped against the side wall of the open cavity, a driving rod 5 is fixed on the rotating shaft of the driving plate 3 in the same axial center, the upper end of the driving rod 5 is positioned above the driving plate 3, a pull rope 6 is fixed at the tail end of the driving rod 5, the pull rope 6 is always in a stretched state, an opening penetrating up and down is arranged above the driving rod 5 on the mounting frame 1, the driving rod 5 can swing in the opening, a support is arranged on the right side of the upper end of the mounting frame 1, the connecting arm 8 is rotatably arranged on the support, the connecting arm 8 is shaped like a Chinese character kou, a torsion spring is arranged between a rotating shaft of the connecting arm 8 and the support, a driven rod is coaxially fixed on the rotating shaft of the connecting arm 8, the right end of the driven rod is positioned on the right side of the connecting arm 8, the upper end of a pull rope 6 passes through the opening and is connected with the tail end of the driven rod, a pressing plate 9 is fixed on a cantilever on the left side of the connecting arm 8, a rotating groove is arranged right below the pressing plate 9, a rotating shaft is rotatably arranged in the rotating groove, the upper end of the rotating shaft extends out of the surface of the mounting frame 1, a rotary disk 10 is fixed at the upper end of the rotating disk 10, a groove is arranged at the upper end of the rotary disk 10, the bottom end of the pressing plate 9 corresponds to the groove, friction layers are arranged at the positions, which are wanted to be contacted, of the bottom end of the pressing plate 9 and the groove surface are respectively, pointers 11 are fixed on the right side wall of the rotary disk 10, an angle ruler 12 matched with the pointers 11 is arranged on the surface of the mounting frame 1, two groups of angles symmetrically arranged along the pointers 11, the angle value on the symmetry line is 0 degrees;

the left side of carousel 10 is fixed with locating lever 13, the locating lever 13 left end is equipped with sacculus 14, sacculus 14 is oval spherical, sacculus 14 sets up round the axis of locating lever 13, be equipped with air flue 15 in the locating lever 13, the equipartition has a plurality of bleeder vents on the outer wall that locating lever 13 left end is located sacculus 14 inside, all bleeder vents all communicate with air flue 15, the air flue 15 right-hand member penetrates in the carousel 10 and the center of rotation axis bottom is worn out, be located top spring 4 in the compartment of drive plate 3 and be equipped with gasbag 18, gasbag 18 left end butt is on the compartment inner wall, right-hand member butt is on the opening intracavity wall, gasbag 18 right-hand member intercommunication has trachea 17, be equipped with passageway 16 in the mounting bracket 1, trachea 17 upper end and passageway 16 right-hand member intercommunication, passageway 16 left end is through rotation joint and air flue 15 intercommunication.

The specific use process and the efficacy of the utility model are as follows:

in the initial state, the top spring 4 and the torsion spring are in normal telescopic states, at the moment, the left end of the driving plate 3 extends out of the opening cavity, the air bag 18 is inflated and inflated, the air bag 14 is shrunken, the driving rod 5 is in the vertical position, the driven plate 7 is in the horizontal position, the lower end of the pressing plate 9 is propped against the groove of the turntable 10, the turntable 10 is limited, the positioning rod 13 is positioned on the horizontal line in the left-right direction, and the pointer 11 points to 0 degree;

when in use, medical staff holds the handle, fingers press the left side wall of the driving plate 3, after inserting the positioning rod 13 into the medullary cavity of a patient to a certain depth, the driving plate 3 is pressed until the right side wall of the driving plate 3 is propped against the inner wall of the opening cavity, the driving plate 3 cannot move continuously, in the process, the top spring 4 and the air bag 18 are compressed, internal air is extruded into the balloon 14 after passing through the air pipe 17, the channel 16, the air passage 15 and the air vent after the air bag 18 is compressed, the balloon 14 expands and bulges, the driving plate 3 deflects to drive the driving rod 5 to deflect anticlockwise, the driving rod 5 pulls the driven rod to deflect clockwise through the pull rope 6, then drives the connecting arm 8 to deflect clockwise, the torsion spring is compressed, the connecting arm 8 lifts the pressing plate 9, the pressing plate 9 is separated from the rotary disc 10, the limit of the rotary disc 10 is lost, the pressing action is kept unchanged at the moment, the positioning rod 13 is gradually stretched into the medullary cavity, the position is continuously adjusted (bone marrow is a soft and blood-rich tissue, the end part of the positioning rod 13 can deflect in the intramedullary cavity) until the balloon 14 is positioned at the proximal narrow part of the femur, at this time, the position of the positioning rod 13 is the position of the femoral anatomical shaft, that is, the ideal force line position required to be adjusted by the operation, after the positioning rod 13 reaches the required position, the deflection angle of the positioning rod 13 is determined by the angle value pointed by the pointer 11, during reading, the wrist is kept stable, the driving plate 3 is released, the driving plate 3 is reset under the action of the top spring 4, the air bag 18 sucks the air in the balloon 14, meanwhile, the driving plate 3 drives the driving rod 5 to deflect clockwise, the connecting arm 8 deflects anticlockwise under the action of the torsion spring, so that the pressing plate 9 is pressed in the groove again, at this time, the pointer 11 is fixed, the pointing direction of the positioning rod 13 is prevented from being influenced by the shaking of the arm 2 caused by the movement of the bending over and the like during reading, positioning accuracy is ensured, and the positioning rod 13 is also convenient to extract after the balloon 14 is deflated again.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a knee joint director, a serial communication port, including mounting bracket (1), mounting bracket (1) right-hand member below is fixed with handle (2), be equipped with left side open-ended mouth in handle (2) left end, articulated in the open-ended mouth have drive plate (3), be equipped with top spring (4) between drive plate (3) right side wall and the open-ended intracavity wall, drive plate (3) coaxial fixed with actuating lever (5), actuating lever (5) end-to-end fixed with stay cord (6), be located actuating lever (5) top and be equipped with the opening that runs through from top to bottom on mounting bracket (1), be connected with the driven lever of articulating on mounting panel upper end right side behind stay cord (6) passing the opening, driven lever coaxial fixed with linking arm (8), be equipped with the torsional spring between linking arm (8) and mounting bracket (1), linking arm (8) left side is equipped with clamp plate (9), the mounting panel is located clamp plate (9) below and articulates there is carousel (10), carousel (10) right side wall is fixed with pointer (11), mounting bracket (1) surface is equipped with angle chi (12) with pointer (11) complex, carousel (10) left side fixed with locating lever (13) and balloon (14) are equipped with in locating lever (13) intercommunication balloon (14), the right side wall of the driving plate (3) is positioned above the top spring (4) and is provided with an air bag (18), the right end of the air bag (18) is propped against the inner wall of the opening cavity, and the air bag (18) is communicated with the air passage (15).

2. The knee joint orienter according to claim 1, wherein a rotating shaft is fixed at the bottom end of the turntable (10), a rotating groove is formed in the surface of the mounting frame (1), and the rotating shaft is rotatably mounted in the rotating groove.

3. The knee joint director according to claim 2, wherein the right end of the air passage (15) penetrates into the rotary table (10) and penetrates out from the center of the bottom end of the rotary shaft, a channel (16) is arranged in the mounting frame (1), the left end of the channel (16) is communicated with the air passage (15) through a rotary joint, and the right end of the channel (16) is communicated with the right side of the air bag (18) through an air pipe (17).

4. A knee joint orient according to claim 1, wherein the balloon (14) is disposed about a locating rod (13) axis.

5. A knee joint orient device according to claim 3, wherein the balloon (14) is elliptical.

6. A knee joint orientator according to claim 1, wherein the right side of the upper end of the mounting frame (1) is provided with a support on which the connecting arm (8) is rotatably mounted.

7. The knee joint orienter according to claim 1, wherein a plurality of ventilation holes are uniformly distributed on the outer wall of the left end of the positioning rod (13) positioned in the balloon (14), and all ventilation holes are communicated with the air passage (15).

8. The knee joint orienter according to claim 1, wherein a groove is formed in the upper end face of the rotary disc (10), the bottom end of the pressing plate (9) is of a similar sphere shape corresponding to the groove, and friction layers are arranged at contact positions of the groove and the bottom end of the pressing plate (9).

9. A knee joint orienter as claimed in claim 1, wherein said connecting arm (8) is shaped like a Chinese character 'kou'.