Leg fixing clamp for orthopedic surgery

Abstract

The invention belongs to the technical field of leg fixing clamps, and particularly relates to an orthopedic surgery leg fixing clamp which comprises a bottom plate, a first limiting assembly arranged between the bottom plate and a supporting leg plate and used for limiting rotation of the supporting leg plate, and a mounting block fixedly mounted on the supporting leg plate and used for limiting rotation of the supporting leg plate. A connecting frame is rotatably mounted in the mounting block, a supporting frame is fixedly mounted on the connecting frame, a supporting plate used for bearing the shank is slidably mounted in the supporting frame, the second limiting assembly is arranged in the mounting block and used for limiting rotation of the connecting frame, and the binding assembly is arranged on the supporting plate and used for limiting movement of the shank. Through cooperative use of the structures, muscle groups at the bottoms of thighs can be effectively pressed, the problems of thigh muscle fatigue and shank trembling are reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of leg fixing clamps, in particular to a leg fixing clamp for orthopedic surgery. Background Art

[0002] The leg fixation clamp for orthopedic surgery is a medical device specifically used to fix the leg bones or joints during orthopedic surgery. This clamp is usually made of metal, plastic or composite materials and has good corrosion resistance and antibacterial properties. The main function of the leg fixation clamp is to accurately and stably clamp the leg bones or joints during surgery to facilitate doctors to perform surgical operations.

[0003] When fixing the calf during the operation, the calf will be raised, and the patient's thigh will be suspended in the air. The thigh will be suspended in the air for a long time, and the relevant muscles need to work continuously to maintain the posture of the leg, which will cause muscle fatigue and may force the calf to shake and affect the surgical process.

[0004] To this end, the present invention provides a leg fixing clamp for orthopedic surgery. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the leg fixing fixture for orthopedic surgery described in the present invention comprises a bottom plate, on which a supporting leg plate is rotatably mounted;

[0007] A first limiting assembly is provided between the bottom plate and the supporting leg plate, and is used to limit the rotation of the supporting leg plate;

[0008] A mounting block is fixedly mounted on the support leg plate, a connecting frame is rotatably mounted inside the mounting block, a supporting frame is fixedly mounted on the connecting frame, and a support plate for carrying the calf is slidably mounted inside the supporting frame;

[0009] A second limiting assembly is arranged inside the mounting block and is used to limit the rotation of the connecting frame;

[0010] The binding assembly is arranged on the supporting plate and is used for limiting the movement of the calf.

[0011] The first limiting assembly includes a connecting block, a ratchet and a ratchet rod. The connecting block is fixedly mounted on the side wall of the supporting leg plate. A rotating rod is fixedly mounted on the connecting block. The rotating rod extends to the inside of the base plate. The ratchet is fixedly mounted on the outer wall of the rotating rod. The ratchet rod is elastically mounted inside the base plate. The ratchet is adapted to the ratchet rod.

[0012] A rotating shaft is fixedly mounted on the outer wall of the ratchet rod, one end of the rotating shaft extends out of the outer wall of the bottom plate, and a torsion spring is arranged between the rotating shaft and the bottom plate.

[0013] The second limit assembly includes a limit card block and a gear block. A plurality of limit card blocks are provided. The plurality of limit card blocks are fixedly mounted on the outer wall of the connecting frame, and the gear block is rotatably mounted inside the mounting block.

[0014] A push block is fixedly installed on the outer wall of the connecting frame, a magnetic block is fixedly installed on the side wall of the gear block, a magnet is fixedly installed inside the mounting block, the magnetic block and the magnet attract each other, and a push rod is fixedly installed on the outer wall of the connecting frame.

[0015] The binding assembly includes a binding strap, a towing rod and a mounting box. The binding strap is elastically mounted inside the support plate. The towing rod is fixedly mounted on one side of the support plate. The towing rod is fixedly connected to the binding strap. The mounting box is fixedly mounted on one end of the support plate away from the towing rod.

[0016] An accommodating groove for accommodating the drag rod is provided inside the installation box, a clamping block is elastically installed on the side wall of the drag rod, and a clamping groove is provided inside the accommodating groove.

[0017] A push rod is elastically installed inside the installation box, and one end of the push rod extends to the inside of the card slot.

[0018] A clamping plate is fixedly installed on the side wall of the support plate, a strap passes through the clamping plate, a nail plate is fixedly installed inside the clamping plate, a top plate is elastically installed inside the support plate, a linkage rod is rotatably installed inside the clamping plate, and a cam for pushing the top plate is fixedly installed on the linkage rod.

[0019] A worm wheel is fixedly installed at one end of the linkage rod, and a worm is rotatably installed inside the clamping plate, and the worm is meshed with the worm wheel.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The leg fixing clamp for orthopedic surgery described in the present invention can support the patient's thigh by rotating the supporting leg board clockwise to a corresponding angle and fixing the supporting leg board in position with the cooperation of the ratchet rod and the ratchet wheel. Since the angle of the patient's thigh is inclined at this time, the supporting leg board will bear most of the force and will also compress the bottom surface of the patient's thigh, which limits the range of motion of the thigh relative to the pelvis, and the movement of the calf is easier to control. Therefore, when the doctor performs surgery on the patient's calf, the problem of thigh muscle fatigue and calf tremor can be better reduced by tilting and pressing the muscle group at the bottom of the thigh.

[0022] 2. The leg fixing clamp for orthopedic surgery described in the present invention is a leg fixing clamp that moves around the support plate toward the installation box by pulling the drag rod, and installing the drag rod into the accommodating groove in the installation box. The drag rod will be engaged with the installation box through the engagement of the card block and the card groove. The worm gear is then turned to control the linkage rod to rotate clockwise, driving the cam to press upward, so that the top plate presses the strap, thereby limiting the movement of the strap, which can effectively improve the effect of the strap in tightening the patient's calf. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a stereogram in the present invention;

[0025] Figure 2 It is a structural schematic diagram of the bottom plate of the present invention;

[0026] Figure 3 The present invention Figure 2 A in the enlarged view;

[0027] Figure 4 It is a structural schematic diagram of the connecting frame in the present invention;

[0028] Figure 5 The present invention Figure 4 The enlarged view of point B in the figure;

[0029] Figure 6 It is a structural schematic diagram of the support plate in the present invention;

[0030] Figure 7 The present invention Figure 6 Enlarged view of point C in the middle;

[0031] Figure 8 It is a structural schematic diagram of the installation block in the present invention;

[0032] Fig. 9 The present invention Figure 8 Enlarged view of point D in the middle;

[0033] Fig.10 It is a cross-sectional view of a clamping plate in the present invention.

[0034] In the figure: 1, bottom plate; 2, supporting leg plate; 3, connecting block; 4, mounting block; 5, supporting frame; 6, supporting plate; 7, binding strap; 8, splint; 9, nail plate; 10, worm; 11, worm wheel; 12, drag rod; 13, clamping block; 14, cam; 15, linkage rod; 16, top plate; 17, ratchet rod; 18, ratchet; 19, rotating shaft; 20, connecting frame; 21, limiting clamping block; 22, pushing block; 23, pushing rod; 24, gear block; 25, magnet; 26, mounting box; 27, receiving groove; 28, pushing rod; 29, clamping groove. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] Embodiment 1: Figures 1 to 9 As shown, a leg fixing fixture for orthopedic surgery according to an embodiment of the present invention comprises a base plate 1, on which a supporting leg plate 2 is rotatably mounted;

[0037] The patient can sit on the base plate 1 , and both the base plate 1 and the supporting leg plate 2 are provided with soft cushions.

[0038] The first limiting component is arranged between the base plate 1 and the supporting leg plate 2, and is used to limit the rotation of the supporting leg plate 2. The first limiting component can limit the rotation angle of the supporting leg plate 2, thereby realizing the control of the thigh lifting angle.

[0039] A mounting block 4 is fixedly mounted on the support leg plate 2, a connecting frame 20 is rotatably mounted inside the mounting block 4, a supporting frame 5 is fixedly mounted on the connecting frame 20, and a support plate 6 for supporting the calf is slidably mounted inside the supporting frame 5;

[0040] There are two support frames 5, which are symmetrically arranged at both ends of the connecting frame 20. When the calf is placed on the support frames 5, the support frames 5 at both ends will not block the range of the calf, further improving the doctor's operating space.

[0041] At the same time, the support plate 6 slidably installed inside the support frame 5 can also adapt to patients of different heights.

[0042] A second limiting assembly is arranged inside the mounting block 4 and is used to limit the rotation of the connecting frame 20;

[0043] By setting the second limiting component, the rotation angle of the connecting frame 20 can be limited, and the calf placed on the supporting plate 6 can be supported.

[0044] The binding assembly is arranged on the support plate 6 and is used to limit the movement of the calf. When the calf is placed on the support plate 6, the calf can be limited by the binding assembly.

[0045] The first limiting assembly includes a connecting block 3, a ratchet 18 and a ratchet rod 17. The connecting block 3 is fixedly mounted on the side wall of the supporting leg plate 2. A rotating rod is fixedly mounted on the connecting block 3. The rotating rod extends to the inside of the base plate 1. The ratchet 18 is fixedly mounted on the outer wall of the rotating rod. The ratchet rod 17 is elastically mounted inside the base plate 1. The ratchet 18 is adapted to the ratchet rod 17.

[0046] By cooperating with the ratchet 18 and the ratchet rod 17, the ratchet 18 can be driven to rotate at the same time when the supporting leg board 2 is rotated, and the ratchet rod 17 can block the counterclockwise rotation of the supporting leg board 2. Therefore, the doctor can rotate the supporting leg board 2 clockwise to the corresponding angle. At this time, with the cooperation of the ratchet rod 17, the patient's thigh can be supported. Since the angle of the patient's thigh is inclined at this time, the supporting leg board 2 will bear most of the force and will also compress the bottom surface of the patient's thigh, which limits the range of motion of the thigh relative to the pelvis, thereby making the movement of the calf more controllable. The movement of the thigh and calf is controlled by multiple groups of muscles. These muscles generate force when contracting and relaxing to drive the movement of the joints. Therefore, when the bottom of the thigh is fixed, the movement of the calf of related muscle groups such as the hamstring group on the back of the thigh and the quadriceps group on the front of the thigh is easier to control. Therefore, when the doctor performs surgery on the patient's calf, by tilting and pressing the muscle group at the bottom of the thigh, the problem of thigh muscle fatigue and calf tremor can be better reduced.

[0047] A rotating shaft 19 is fixedly mounted on the outer wall of the ratchet rod 17 , one end of the rotating shaft 19 extends out of the outer wall of the bottom plate 1 , and a torsion spring is arranged between the rotating shaft 19 and the bottom plate 1 .

[0048] The setting of the torsion spring can always drive the ratchet rod 17 to keep blocking the ratchet wheel 18. The ratchet rod 17 can be moved away from the ratchet wheel 18 by rotating the rotating shaft 19, and the supporting leg plate 2 in the locked position can be lowered at this time.

[0049] The second limiting assembly includes a limiting card block 21 and a gear blocking block 24 . A plurality of limiting card blocks 21 are provided. The plurality of limiting card blocks 21 are fixedly mounted on the outer wall of the connecting frame 20 , and the gear blocking block 24 is rotatably mounted inside the mounting block 4 .

[0050] The gear block 24 is rotatably installed inside the mounting block 4 by a torsion spring. The distance between the multiple limit blocks 21 is the gear for adjusting the rotation of the connecting frame 20. When the connecting frame 20 rotates clockwise, it will also synchronously drive the support frame 5 and the support plate 6 to rotate synchronously. At this time, the limit block 21 closest to the gear block 24 will push the gear block 24 until the limit block 21 passes the position of the gear block 24. At this time, when the connecting frame 20 is rotated counterclockwise, the gear block 24 can block the passed limit block 21. At this time, the position of the support plate 6 will also be fixed, which is used for the doctor to adjust the support angle of the calf for easy operation. The adjustable range can be further improved by setting multiple limit blocks 21.

[0051] A push block 22 is fixedly mounted on the outer wall of the connecting frame 20 , a magnetic block is fixedly mounted on the side wall of the gear stop block 24 , a magnet 25 is fixedly mounted inside the mounting block 4 , the magnetic block and the magnet 25 attract each other, and a push rod 23 is fixedly mounted on the outer wall of the connecting frame 20 .

[0052] When the connecting frame 20 is adjusted to the maximum angle, the last limit block 21 will also be located at the other end of the gear block 24. The connecting frame 20 can continue to be controlled to rotate clockwise, driving the push block 22 to push the gear block 24. Because the height of the push block 22 is greater than the height of the limit block 21, the push block 22 will also push the gear block 24 to a certain height, and finally be adsorbed by the magnet 25 and remain in place. At this time, the torsion spring on the gear block 24 will also deform to store elastic potential energy, and the support frame 5 can drive the support plate 6 to rotate counterclockwise and reset.

[0053] When the support plate 6 and the support leg plate 2 are both in a horizontal state, the push rod 23 on the connecting frame 20 can push the gear block 24 to separate it from the magnet 25 and reset it under the action of the torsion spring.

[0054] The binding assembly includes a binding belt 7, a towing rod 12 and a mounting box 26. The binding belt 7 is elastically mounted inside the support plate 6. The towing rod 12 is fixedly mounted on one side of the support plate 6. The towing rod 12 is fixedly connected to the binding belt 7. The mounting box 26 is fixedly mounted on one end of the support plate 6 away from the towing rod 12.

[0055] The installation box 26 has an accommodating groove 27 for accommodating the drag rod 12 . A clamping block 13 is elastically mounted on the side wall of the drag rod 12 . A clamping groove 29 is formed inside the accommodating groove 27 .

[0056] By pulling the tow rod 12 to move around the support plate 6 toward the installation box 26, and installing the tow rod 12 into the accommodating groove 27 in the installation box 26, the tow rod 12 will be engaged with the installation box 26 through the engagement of the block 13 with the slot 29, and the calf on the support plate 6 can be restrained by the strap 7.

[0057] A push rod 28 is elastically mounted inside the mounting box 26 , and one end of the push rod 28 extends to the inside of the slot 29 .

[0058] The block 13 can be pushed out from the inside of the slot 29 by pressing the push rod 28 , and the drag rod 12 can be removed at this time to release the restraint on the support plate 6 .

[0059] Embodiment 2: Fig.10 As shown in Comparative Example 1, another embodiment of the present invention is:

[0060] A clamping plate 8 is fixedly installed on the side wall of the support plate 6, a strap 7 passes through the clamping plate 8, a nail plate 9 is fixedly installed inside the clamping plate 8, a top plate 16 is elastically installed inside the support plate 6, a linkage rod 15 is rotatably installed inside the clamping plate 8, and a cam 14 for pushing the top plate 16 is fixedly installed on the linkage rod 15.

[0061] The strap 7 passes through the interior of the splint 8 and is located between the nail plate 9 and the top plate 16. By controlling the linkage rod 15 to rotate 90 degrees clockwise, the cam 14 can be driven to press upward, and at the same time, the top plate 16 can be driven to press the strap 7, so that the strap 7 contacts the nail plate 9. The setting of the nail plate 9 can limit the movement of the strap 7, which can effectively improve the effect of the strap 7 in tightening the patient's calf.

[0062] A worm wheel 11 is fixedly mounted on one end of the linkage rod 15 , and a worm 10 is rotatably mounted inside the clamping plate 8 , and the worm 10 is meshed with the worm wheel 11 .

[0063] One end of the worm 10 extends out of the top of the splint 8, and the worm 10 can be rotated to drive the worm wheel 11 to rotate. The self-locking characteristics of the worm wheel 11 and the worm 10 can further improve the restraint effect of the bandage 7 on the patient's calf.

[0064] Working principle: By rotating the support leg board 2 clockwise to the corresponding angle, the support leg board 2 is fixed in position with the cooperation of the ratchet rod 17 and the ratchet wheel 18, and the patient's thigh can be supported. Since the angle of the patient's thigh is inclined at this time, the support leg board 2 will bear most of the force and will also compress the bottom surface of the patient's thigh, which limits the range of motion of the thigh relative to the pelvis, and the movement of the calf is easier to control. Therefore, when the doctor performs surgery on the patient's calf, by tilting and pressing the muscle group at the bottom of the thigh, the problem of thigh muscle fatigue and calf tremor can be better reduced.

[0065] By controlling the connecting frame 20 to rotate clockwise, the limit block 21 closest to the gear block 24 will push the gear block 24 until the limit block 21 passes the position of the gear block 24. At this time, when the connecting frame 20 is rotated counterclockwise, the gear block 24 can block the passed limit block 21. At this time, the position of the support plate 6 will also be fixed, which is used for the doctor to adjust the support angle of the calf to facilitate operation. The adjustable range can be further increased by setting multiple limit blocks 21.

[0066] By pulling the drag rod 12 around the support plate 6 and moving it toward the installation box 26, and installing the drag rod 12 into the accommodating groove 27 in the installation box 26, the block 13 is engaged with the groove 29, and the drag rod 12 is engaged with the installation box 26. Then, by rotating the worm gear 10 to control the linkage rod 15 to rotate 90 degrees clockwise, the cam 14 is driven to press upward, so that the top plate 16 presses the strap 7, thereby limiting the movement of the strap 7, which can effectively improve the effect of the strap 7 in tightening the patient's calf.

[0067] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A leg fixation clamp for orthopedic surgery, characterized in that: It comprises a bottom plate (1), on which a supporting leg plate (2) is rotatably mounted; A first limiting component is arranged between the bottom plate (1) and the supporting leg plate (2) and is used to limit the rotation of the supporting leg plate (2); A mounting block (4) is fixedly mounted on the support leg plate (2), a connecting frame (20) is rotatably mounted inside the mounting block (4), a supporting frame (5) is fixedly mounted on the connecting frame (20), and a support plate (6) for supporting the calf is slidably mounted inside the supporting frame (5); A second limiting assembly, arranged inside the mounting block (4) and used to limit the rotation of the connecting frame (20); The binding assembly is arranged on the support plate (6) and is used to restrict the movement of the calf.

2. A leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The first limiting assembly comprises a connecting block (3), a ratchet (18) and a ratchet rod (17); the connecting block (3) is fixedly mounted on the side wall of the supporting leg plate (2); a rotating rod is fixedly mounted on the connecting block (3); the rotating rod extends to the inside of the base plate (1); the ratchet (18) is fixedly mounted on the outer wall of the rotating rod; the ratchet rod (17) is elastically mounted inside the base plate (1); and the ratchet (18) is adapted to the ratchet rod (17).

3. The leg fixation fixture for orthopedic surgery according to claim 2, characterized in that: A rotating shaft (19) is fixedly mounted on the outer wall of the ratchet rod (17), one end of the rotating shaft (19) extends out of the outer wall of the bottom plate (1), and a torsion spring is arranged between the rotating shaft (19) and the bottom plate (1).

4. The leg fixation fixture for orthopedic surgery according to claim 3, characterized in that: The second limit assembly comprises a limit card block (21) and a gear stop block (24), wherein a plurality of limit card blocks (21) are provided, wherein the plurality of limit card blocks (21) are fixedly mounted on the outer wall of the connecting frame (20), and the gear stop block (24) is rotatably mounted inside the mounting block (4).

5. The leg fixation fixture for orthopedic surgery according to claim 4, characterized in that: A push block (22) is fixedly mounted on the outer wall of the connecting frame (20), a magnetic block is fixedly mounted on the side wall of the gear stop block (24), a magnet (25) is fixedly mounted inside the mounting block (4), the magnetic block and the magnet (25) attract each other, and a push rod (23) is fixedly mounted on the outer wall of the connecting frame (20).

6. The leg fixation fixture for orthopedic surgery according to claim 5, characterized in that: The binding assembly comprises a binding belt (7), a towing rod (12) and a mounting box (26), wherein the binding belt (7) is elastically mounted inside the support plate (6), the towing rod (12) is fixedly mounted on one side of the support plate (6), the towing rod (12) is fixedly connected to the binding belt (7), and the mounting box (26) is fixedly mounted on one end of the support plate (6) away from the towing rod (12); The installation box (26) has a receiving groove (27) for receiving the drag rod (12), a clamping block (13) is elastically mounted on the side wall of the drag rod (12), and a clamping groove (29) is provided inside the receiving groove (27).

7. The leg fixation fixture for orthopedic surgery according to claim 6, characterized in that: A push rod (28) is elastically mounted inside the installation box (26), and one end of the push rod (28) extends to the inside of the card slot (29).

8. The leg fixation fixture for orthopedic surgery according to claim 7, characterized in that: A clamping plate (8) is fixedly mounted on the side wall of the support plate (6), the binding belt (7) passes through the clamping plate (8), a nail plate (9) is fixedly mounted inside the clamping plate (8), a top plate (16) is elastically mounted inside the support plate (6), a linkage rod (15) is rotatably mounted inside the clamping plate (8), and a cam (14) for pushing the top plate (16) is fixedly mounted on the linkage rod (15).

9. The leg fixation fixture for orthopedic surgery according to claim 8, characterized in that: A worm wheel (11) is fixedly mounted on one end of the linkage rod (15), a worm (10) is rotatably mounted inside the clamping plate (8), and the worm (10) is meshed with the worm wheel (11).

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