A convertible body position fixing device for knee joint surgery

Abstract

A device for convertible body position fixation in knee joint surgery comprises a support platform, at least one transverse guide rail arranged along the Y-axis direction, at least one longitudinal guide rail arranged along the X-axis direction and a first slider installed on the longitudinal guide rail, the first slider is provided with a first fastener for locking the first slider on the longitudinal guide rail, the transverse guide rail is fixed to the support platform, the longitudinal guide rail is fixedly connected to the second slider, the longitudinal guide rail is installed on the transverse guide rail through the second slider, the second slider is provided with a second fastener for locking the second slider on the transverse guide rail, the first slider is hinged with a transverse swing seat through a first hinge arranged along the X-axis direction, and the transverse swing seat is hinged with a longitudinal swing block through a second hinge arranged along the Y-axis direction. The present invention enables the surgeon to aseptically adjust the body position of the knee joint during surgery, and is simple to operate and easy to install, so it can be widely promoted and applied in clinical practice.

Description

Technical Field

[0001] The invention relates to a convertible body position fixing device for knee joint surgery. Background Art

[0002] In actual clinical work, the implementation of knee surgery requires the knee joint to constantly change between extension and flexion, as well as between internal rotation, non-rotation and external rotation. Currently, a surgical assistant is required to perform position changes and maintain the required position. Long-term position maintenance will greatly consume the assistant's physical strength and the fixation will be unstable, affecting the accuracy of the surgical operation, the safety and reliability of the operation. In addition, the existing fixation device is relatively bulky, complicated to install, and cumbersome to operate, which is not conducive to the operator's intraoperative adjustment and fixation, so it has not been widely used in clinical practice. Summary of the invention

[0003] The present invention solves the shortcomings of the prior art and provides a convertible body position fixing device for knee joint surgery which has a large adjustment range, multiple adjustment positions, and is convenient and stable to lock after adjustment.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A convertible body position fixing device for knee joint surgery comprises a support platform, at least one transverse guide rail arranged along the Y-axis direction, at least one longitudinal guide rail arranged along the X-axis direction, and a first slider installed on the longitudinal guide rail, wherein the first slider is provided with a first fastener for locking the first slider on the longitudinal guide rail.

[0006] The transverse guide rail is fixed on the supporting platform, the longitudinal guide rail is fixedly connected to the second slider, the longitudinal guide rail is installed on the transverse guide rail through the second slider, the second slider is provided with a second fastener for locking the second slider on the transverse guide rail, the first slider is hinged with a transverse swing seat through a first hinge arranged along the X-axis direction, the transverse swing seat is hinged with a longitudinal swing block through a second hinge arranged along the Y-axis direction, a foot support plate for fixing the patient's foot is fixed on the longitudinal swing block, the first slider is provided with a third fastener for locking the transverse swing seat on the first slider, and the transverse swing seat is provided with a fourth fastener for locking the longitudinal swing block on the transverse swing seat. By sliding the second slider on the transverse guide rail and the first slider on the longitudinal guide rail, it is ensured that the footrest can be greatly adjusted on the support platform along the X-axis and Y-axis directions. By means of the transverse swing seat and the longitudinal swing block, the footrest can be rotated and offset along the X-axis and Y-axis directions. Such adjustment can achieve extension, flexion, internal rotation, non-rotation or external rotation of the knee joint of the footrest, and then various fasteners are used to fix its position to achieve the purpose of fixing the knee joint position.

[0007] Furthermore, the support platform is also provided with a fixing device for supporting the support platform on the operating bed, so that the entire support platform can be fixed on the operating bed through the fixing device.

[0008] Furthermore, the fixing device includes a fixed connecting rod fixed to the supporting platform by a connecting rod fastening screw and a fixing clamp slidably connected to the fixed connecting rod, the fixing clamp includes an upper clamp block and a lower clamp block, and the upper clamp block and the lower clamp block are provided with locking fastening screws for locking the upper clamp block and the lower clamp block to the fixed connecting rod.

[0009] Furthermore, the upper clamping block and / or the lower clamping block are provided with a fixing locking member for locking the upper clamping block and / or the lower clamping block on the operating table.

[0010] Furthermore, the fixing locking member is a fixing locking screw, and screw holes are correspondingly provided on the upper clamping block and the lower clamping block, and the fixing locking screw is installed in the screw holes.

[0011] Furthermore, two transverse guide rails and two longitudinal guide rails are provided.

[0012] Furthermore, the first fastener and the second fastener are locking screws. The first slider and the second slider are provided with screw holes matching the locking screws, the locking screws are installed in the screw holes, and the locking screws are rotated to make the locking screws contact with the support platform or other fixings, so that the first slider and the second slider are locked by pressure and friction.

[0013] Furthermore, the third fastener includes a first conical friction wheel fixed on the first hinge shaft, a second conical friction wheel matching the first conical friction wheel, and a first screw rod driving the second conical friction wheel to rotate and screwed on the first slider. By rotating the first screw rod, the conical friction surface of the second conical friction wheel is in close contact with the conical friction surface of the first conical friction wheel, thereby locking the rotation angle of the first hinge shaft.

[0014] Furthermore, the fourth fastener includes a second screw rod coaxially fixed at one end of the second hinge shaft and having a diameter larger than the second hinge shaft. The transverse swing seat is provided with a groove opening upward and arranged along the X-axis direction. The thickness of the longitudinal swing block matches the groove. An axial hole matching the size of the second hinge shaft is provided on one side of the groove, and a screw hole matching the size of the second screw rod is provided on the other side. The second screw rod is installed in the screw hole so that the second hinge shaft is placed in the axial hole. The longitudinal swing block is installed in the groove through the second hinge shaft. Since the diameter of the second screw rod is larger than the second hinge shaft, a locking step is formed between the second screw and the second hinge shaft. By rotating the second screw rod, the locking step contacts the end of the longitudinal swing block. The pressure and friction of the locking step on the longitudinal swing block lock the position of the rotated longitudinal swing block.

[0015] In summary, the present invention enables the operator to aseptically adjust the position of the knee joint during surgery, and is simple to operate and easy to install, and can be widely promoted and applied in clinical practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereogram of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the first conical friction wheel and the second conical friction wheel of the present invention.

[0018] In the attached drawings, 1. support platform; 2. longitudinal guide rail; 3. first slide block; 4. transverse swing seat; 5. longitudinal swing block; 6. foot support plate; 7. fourth fastener; 8. third fastener; 9. first fastener; 10. transverse guide rail; 11. second fastener; 12. fixed connecting rod; 13. fixing clamp; 14. locking screw; 15. fixing locking screw; 16. connecting rod fastening screw. DETAILED DESCRIPTION

[0019] In order to better understand the present invention, the invention is further described in detail below in conjunction with the accompanying drawings and implementation examples, but the implementation methods of the present invention are not limited thereto. The protection scope of the present invention also involves equivalent technical means that can be thought of by those skilled in the art based on the concept of the present invention.

[0020] like Figure 1 As shown, a convertible body position fixing device for knee joint surgery comprises a support platform 1, two transverse guide rails 10 arranged along the Y-axis direction, two longitudinal guide rails 2 arranged along the X-axis direction, and a first slider 3 installed on the longitudinal guide rails 2, wherein the first slider 3 is provided with a first fastener 9 for locking the first slider 3 on the longitudinal guide rails 2.

[0021] The transverse guide rail 10 is fixed on the supporting platform 1, the longitudinal guide rail 2 is fixedly connected to the second slider, the longitudinal guide rail 2 is installed on the transverse guide rail 10 through the second slider, the second slider is provided with a second fastener 11 for locking the second slider on the transverse guide rail 10, the first slider 3 is hinged with a transverse swing seat 4 through a first hinge arranged along the X-axis direction, the transverse swing seat 4 is hinged with a longitudinal swing block 5 through a second hinge arranged along the Y-axis direction, a foot support plate 6 for fixing the patient's foot is fixed on the longitudinal swing block 5, the first slider 3 is provided with a third fastener 8 for locking the transverse swing seat 4 on the first slider 3, and the transverse swing seat 4 is provided with a fourth fastener 7 for locking the longitudinal swing block 5 on the transverse swing seat 4.

[0022] In this embodiment, the support platform 1 is also provided with a fixing device for supporting the support platform 1 on the operating table, the fixing device includes a fixing connecting rod 12 fixed to the support platform 1 by a connecting rod fastening screw 16 and a fixing fixture 13 slidably connected to the fixing connecting rod 12, the fixing fixture 13 includes an upper clamp block and a lower clamp block, the upper clamp block and the lower clamp block are provided with a locking fastening screw 14 for locking the upper clamp block and the lower clamp block on the fixing connecting rod 12, the upper clamp block and / or the lower clamp block are provided with a fixing locking member for locking the upper clamp block and / or the lower clamp block on the operating table, the fixing locking member is a fixing locking screw 15, the upper clamp block and the lower clamp block are provided with screw holes correspondingly, and the fixing locking screw 15 is installed in the screw holes. In this way, the purpose of fixing the entire support platform 1 on the operating table is achieved through the fixing device.

[0023] In this embodiment, the first fastener 9 and the second fastener 11 are locking screws. The first slider 3 and the second slider are provided with screw holes matching the locking screws, and the locking screws are installed in the screw holes. By rotating the locking screws, the locking screws are brought into contact with the support platform 1 or other fixings, and the first slider 3 and the second slider are locked by pressure and friction.

[0024] like Figure 2 As shown, the third fastener 8 includes a first conical friction wheel 81 fixed on the first hinge shaft, a second conical friction wheel 82 matching the first conical friction wheel 81 , and a first screw that drives the second conical friction wheel 82 to rotate and is screwed to the first slider 3 .

[0025] The fourth fastener 7 includes a second screw rod coaxially fixed at one end of the second hinge shaft and having a diameter larger than the second hinge shaft. The transverse swing seat 4 is provided with a groove opening upward and arranged along the X-axis direction. The longitudinal swing block 5 matches the thickness of the groove. An axial hole matching the size of the second hinge shaft is provided on one side of the groove, and a screw hole matching the size of the second screw rod is provided on the other side. The second screw rod is installed in the screw hole so that the second hinge shaft is placed in the axial hole, and the longitudinal swing block 5 is installed in the groove through the second hinge shaft.

[0026] During surgery, the patient's foot component and support platform are kept sterile through routine sterilization of surgical instruments.

[0027] Place the support platform 1 flat on the surgical towel sheet at the leg plate of the operating table. Unscrew the fixing lock to separate the fixing clamp 13, and use the jaws of the fixing clamp 13 to match the side rails of the slideway, and then use the fixing lock to lock and fix; then install the fixing link 12 into the slot of the fixing clamp 13, tighten the locking screw 14, and fix the entire device on the operating table.

[0028] Unscrew the fourth fastener 7 in the support platform 1, insert the longitudinal swing block 5 corresponding to the foot assembly, and tighten it. Place the sterilized affected limb calf and foot on the foot support plate 6 and fix them with a sterilized bandage or the like.

[0029] The first slide block 3 can move along the longitudinal guide rail 2 when the first fastener 9 is loosened, and the first fastener 9 is locked and fixed. The patient's knee joint can move with the position of the first slide block 3 during the operation, and the knee joint can be flexed and extended and fixed in the flexion and extension position.

[0030] When the second fastener 11 is loosened, the second slider and all components on the longitudinal guide rail 2 can slide horizontally along the transverse guide rail 10. This can achieve abduction, adduction and fixation of the lower limbs in corresponding positions.

[0031] During use, the fourth fastener 7 can be loosened to adjust the longitudinal rotation of the foot assembly, and vice versa, it can be fixed by tightening. The position and state of the ankle joint can be adjusted. The third fastener 8 can be twisted to drive the lateral swing seat 4, the longitudinal swing block 5, the foot support plate 6, and the fourth fastener 7 to make lateral deflection through the internal structure. The knee joint can be fixed inward and outward and inward and inward position.

[0032] In addition, it should be noted that this patent is not limited to the above-mentioned embodiments. As long as the specific size or shape of its parts is not specified, the parts can be of any size or shape that is compatible with its structure, and regardless of any changes in its material composition, any structural design provided by the present invention is a variation of the present invention and should be considered to be within the scope of protection of the present invention.

Claims

1. A convertible body position fixation device for knee joint surgery, characterized in that: The invention comprises a support platform (1), at least one transverse guide rail (10) arranged along the Y-axis direction, at least one longitudinal guide rail (2) arranged along the X-axis direction, and a first slider (3) mounted on the longitudinal guide rail (2), wherein the first slider (3) is provided with a first fastener (9) for locking the first slider (3) on the longitudinal guide rail (2). The transverse guide rail (10) is fixed on the support platform (1); the longitudinal guide rail (2) is fixedly connected to the second slider; the longitudinal guide rail (2) is mounted on the transverse guide rail (10) via the second slider; the second slider is provided with a second fastener (11) for locking the second slider on the transverse guide rail (10); the first slider (3) is hinged with a transverse swing seat (4) via a first hinge, the first hinge is arranged along the X-axis direction; the transverse swing seat (4) is hinged with a longitudinal swing block (5) via a second hinge, the second hinge is arranged along the Y-axis direction; a foot support plate (6) for fixing the patient's foot is fixed on the longitudinal swing block (5); the first slider (3) is provided with a third fastener (8) for locking the transverse swing seat (4) on the first slider (3); and the transverse swing seat (4) is provided with a fourth fastener (7) for locking the longitudinal swing block (5) on the transverse swing seat (4); The first fastener (9) and the second fastener (11) are both locking screws, the third fastener (8) comprises a first conical friction wheel fixed on the first hinge shaft, a second conical friction wheel matching the first conical friction wheel, and a first screw driving the second conical friction wheel to rotate and screwed to the first slider (3), the fourth fastener (7) comprises a second screw coaxially fixed to one end of the second hinge shaft and having a diameter greater than that of the second hinge shaft, the transverse swing seat (4) is provided with a groove opening upward and arranged along the X-axis direction, the longitudinal swing block (5) ) matches the thickness of the groove, one side of the groove is provided with an axial hole matching the size of the second hinge shaft, and the other side is correspondingly provided with a screw hole matching the size of the second screw rod, the second screw rod is installed in the screw hole so that the second hinge shaft is placed in the axial hole, the longitudinal swing block (5) is installed in the groove through the second hinge shaft, and the second fastener (11) can make the second slider and all parts on the longitudinal guide rail (2) slide horizontally along the transverse guide rail (10) when the screw is loosened, so as to achieve abduction, adduction and fixation of the lower limbs in corresponding body positions; The support platform (1) is also provided with a fixing device for supporting the support platform (1) on the operating table; the fixing device comprises a fixing connecting rod (12) fixed to the support platform (1) by a connecting rod fastening screw (16) and a fixing clamp (13) slidably connected to the fixing connecting rod (12); the fixing clamp (13) comprises an upper clamp block and a lower clamp block, the upper clamp block and the lower clamp block are provided with a locking member fastening screw (14) for locking the upper clamp block and the lower clamp block on the fixing connecting rod (12); the upper clamp block and / or the lower clamp block are provided with a fixing locking member for locking the upper clamp block and / or the lower clamp block on the operating table.

2. The convertible body position fixation device for knee joint surgery according to claim 1, characterized in that: The fixing locking member comprises a fixing locking screw (15), and screw holes are correspondingly provided on the upper clamping block and the lower clamping block, and the fixing locking screw (15) is installed in the screw holes.

3. The convertible body position fixation device for knee joint surgery according to claim 1, characterized in that: Two transverse guide rails (10) and two longitudinal guide rails (2) are provided.

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