A new type of distraction forceps for orthopedic surgery

Abstract

The present invention discloses a novel distraction forceps for orthopedic surgery, which relates to the technical field of medical devices. The novel distraction forceps for orthopedic surgery comprises a fixed forceps arm and forceps teeth, wherein the bottom of the fixed forceps arm is rotatably connected to a movable forceps arm, the side of the fixed forceps arm is rotatably connected to a torsion spring block, and the bottom of the torsion spring block is fixedly connected to a limiting rod; a distraction assembly is provided between the fixed forceps arm and the movable forceps arm, wherein the distraction assembly comprises a hydraulic device and a hydraulic tank 1, and one end of the hydraulic device is slidably connected to a force block 1. The novel distraction forceps for orthopedic surgery, after holding the fixed forceps arm and the movable forceps arm, cooperate with the hydraulic device, the hydraulic tank 1, the force block 1, the elastic telescopic rod, the arc rod, the spring 1, the pawl, the ratchet, the transmission shaft, the force plate, the arc block, the force block 2, the sliding rod and the limit slot, so that the opening angle of the distraction forceps can be adjusted more conveniently, making the device easier to use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to a novel distraction forceps for orthopedic surgery. Background Art

[0002] During spinal fixation surgery, the diseased vertebra needs to be pressurized or repositioned. Usually, a distraction forceps is used to correct the diseased vertebra with the help of the normal vertebra in the adjacent segment as a fulcrum. According to the relationship between the action force and the reaction force, the normal vertebra may also be displaced or degenerated due to the surgical force during the operation.

[0003] However, the existing new orthopedic surgical spreader forceps often use racks and fixed teeth to impose corresponding restrictions on the two forceps arms, thereby maintaining the stability of the spreader forceps when in use. However, when the device needs to adjust the distance between the two forceps arms, it is necessary to manually move the fixed teeth away from the rack to release the restriction between the two forceps arms, and then adjust the opening angle of the spreader forceps, which makes the process more cumbersome and affects the use of the device. Summary of the Invention

[0004] In response to the shortcomings of the prior art, the present invention provides a novel orthopedic surgical distraction forceps that solves the problems raised in the above-mentioned background art. To achieve the above objectives, the present invention is implemented through the following technical solutions: A novel orthopedic surgical distraction forceps comprises a fixed forceps arm and forceps teeth, wherein the bottom of the fixed forceps arm is rotatably connected to a movable forceps arm, and the side of the fixed forceps arm is rotatably connected to a torsion spring block, and the bottom of the torsion spring block is fixedly connected to a limit rod;

[0005] The cam is connected to the hydraulic cylinder to adjust the speed of the hydraulic cylinder and the hydraulic cylinder to adjust the speed of the hydraulic cylinder. The cam is connected to the hydraulic cylinder to adjust the speed of the hydraulic cylinder. The cam is connected to the hydraulic cylinder to adjust the speed of the hydraulic cylinder.

[0006] Preferably, the force-bearing plate is located on the side of the arc-shaped rod and is fixed to the arc-shaped rod.

[0007] Preferably, the arc-shaped blocking block is located inside the hydraulic tank.

[0008] Preferably, a stabilizing assembly is provided between the fixed plier arm and the movable plier arm and the plier teeth, and the stabilizing assembly includes a hydraulic tank 2, one end of the hydraulic tank 2 is slidably connected to a transmission block, and the other end of the hydraulic tank 2 is slidably connected to a limiting block, and a transmission plate is assembled on the side of the transmission block. The interiors of the fixed plier arm and the movable plier arm are respectively connected to connecting plates by setting spring 2, and the connecting plates are fixedly connected to the limiting block, and a passing groove is provided on the plier teeth.

[0009] Preferably, two transmission plates are provided, and the two transmission plates are connected to the first force-bearing block and the second force-bearing block respectively.

[0010] Preferably, the cross-sectional shape of the through slot is adapted to the cross-sectional shape of the limiting block.

[0011] Preferably, an auxiliary component is provided between the fixed clamp arm and the movable clamp arm, and the auxiliary component includes a fixed rod, a gear rod is assembled on the side of the limiting block, and the side of the fixed rod is rotatably connected to a rotating shaft, and the outer side of the rotating shaft is respectively fixedly connected with a gear and a splint, and the gear is engaged with the gear rod.

[0012] Preferably, two fixing rods are provided, and the two fixing rods are respectively assembled on the fixed clamp arm and the movable clamp arm.

[0013] The present invention provides a novel distraction forceps for orthopedic surgery. It has the following beneficial effects:

[0014] (1) The new orthopedic surgery distraction forceps can be adjusted more conveniently by holding the fixed forceps arm and the movable forceps arm, and then cooperating with the hydraulic device, hydraulic chamber 1, force block 1, elastic telescopic rod, arc rod, spring 1, pawl, ratchet, transmission shaft, force plate, arc block, force block 2, sliding rod and limit slot, so that the opening angle of the distraction forceps can be adjusted more conveniently, making the device easier to use.

[0015] (2) The new orthopedic surgery distraction forceps, after the force blocks 1 and 2 are squeezed, are combined with the hydraulic chamber 2, the transmission block, the limit block, the transmission plate, the spring 2, the connecting plate and the through slot to lock the forceps teeth on the fixed forceps arm and the movable forceps arm, thereby improving the stability of the forceps teeth when in use.

[0016] (3) The new orthopedic surgery distraction forceps can assist in clamping the two teeth of the forceps when the limiting block moves to the side away from the central axis of the device, and then cooperates with the fixing rod, gear rod, rotating shaft, gear and splint, thereby further improving the stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the support assembly of the present invention;

[0020] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0021] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0022] Figure 6 For the present invention Figure 3 The enlarged structural diagram at C in the middle;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the stabilizing assembly of the present invention;

[0024] Figure 8 For the present invention Figure 7 The enlarged structural diagram at D in the middle;

[0025] Figure 9 This is a schematic diagram of the three-dimensional structure of the auxiliary component of the present invention;

[0026] Figure 10 For the present invention Figure 9 Enlarged structural diagram at E in the middle.

[0027] In the picture:

[0028] 100, fixed clamp arm; 200, clamp teeth; 300, movable clamp arm; 400, torsion spring block; 500, limit rod;

[0029] 600, expansion assembly; 601, hydraulic device; 602, hydraulic chamber 1; 603, force block 1; 604, elastic telescopic rod; 605, arc rod; 606, spring 1; 607, pawl; 608, ratchet; 609, transmission shaft; 610, force plate; 611, arc block; 612, force block 2; 613, sliding rod; 614, limit slot;

[0030] 700, stabilizing assembly; 701, hydraulic chamber 2; 702, transmission block; 703, limiting block; 704, transmission plate; 705, spring 2; 706, connecting plate; 707, through slot;

[0031] 800, auxiliary component; 801, fixing rod; 802, gear rod; 803, rotating shaft; 804, gear; 805, splint. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Example 1

[0034] See also Figures 1-6 A novel orthopedic distraction forceps comprises a fixed forceps arm 100 and forceps teeth 200. The bottom of the fixed forceps arm 100 is rotatably connected to a movable forceps arm 300. The side of the fixed forceps arm 100 is rotatably connected to a torsion spring block 400. The bottom of the torsion spring block 400 is fixedly connected to a limit rod 500.

[0035] A spreading assembly 600 is disposed between the fixed caliper arm 100 and the movable caliper arm 300. This assembly includes a hydraulic device 601 and a hydraulic reservoir 1 602. One end of the hydraulic device 601 is slidably connected to a force-bearing block 1 603. Another end of the hydraulic device 601 is slidably connected to an elastic telescopic rod 604. The other end of the hydraulic device 601 is slidably connected to a curved rod 605. After grasping the fixed caliper arm 100 and the movable caliper arm 300, the force-bearing block 1 603 is first squeezed, which engages the hydraulic device 601, which is slidably connected to the force-bearing block 1 603. This increases the pressure within the hydraulic device 601, driving the elastic telescopic rod 604 and the curved rod 605, which are also slidably connected to the hydraulic device 601, to move.

[0036] The bottom of the force-bearing block 1 603 is equipped with a spring 1 606, the side of the elastic telescopic rod 604 is equipped with a pawl 607, and the front end of the torsion spring block 400 is connected to a ratchet 608. When the elastic telescopic rod 604 moves, it drives the pawl 607 installed on its side to move. The pawl 607 then moves to the side of the ratchet 608 and engages with the ratchet 608. The pawl 607 and ratchet 608 restrict the rotation direction of the torsion spring block 400, preventing it from rotating clockwise.

[0037] The top of the movable clamp arm 300 is rotatably connected to a transmission shaft 609. A force-bearing plate 610 is fixedly connected to the outside of the transmission shaft 609. The force-bearing plate 610 is located to the side of the curved rod 605 and is fixed to the curved rod 605. The bottom of the transmission shaft 609 is fixedly connected to an arc-shaped blocking block 611. The arc-shaped blocking block 611 is located inside the hydraulic chamber 1 602. One end of the hydraulic chamber 1 602 is slidably connected to the force-bearing block 2 612. When the curved rod 605 moves, it drives the force-bearing plate 610, which is fixed to it, to rotate. This causes the force-bearing plate 610 to rotate the transmission shaft 609, which in turn drives the arc-shaped blocking block 611, which is fixed to it, to rotate, thereby freeing the hydraulic chamber 1 602 from being blocked.

[0038] The other end of the hydraulic chamber 1 602 is slidably connected to a sliding rod 613, and a limiting groove 614 is provided on the side of the limiting rod 500. When the hydraulic chamber 1 602 is no longer in a blocked state, the force block 2 612 is squeezed, and the hydraulic chamber 1 602 slidably connected to the force block 2 612 cooperates with the hydraulic chamber 1 602, so that the pressure in the hydraulic chamber 1 602 is reduced, and the sliding rod 613 slidably connected to the hydraulic chamber 1 602 moves away from the limiting groove 614, thereby canceling the restriction of the limiting rod 500 on the movable clamp arm 300; then, the opening angle of the spread clamp can be adjusted by adjusting the distance between the fixed clamp arm 100 and the movable clamp arm 300, and when the movable clamp arm 300 rotates When the limit rod 500 is squeezed, the limit rod 500 rotates counterclockwise to a certain angle; after the adjustment is completed, the force block 2 612 and the force block 1 603 are released in sequence to reset the device. At this time, the limit groove 614 on the limit rod 500 can rotate clockwise under the action of the torsion spring block 400, and the sliding rod 613 is reset synchronously, so that the sliding rod 613 is stuck in the limit groove 614, limiting the device to a stable state. In this way, the opening angle of the spreader can be adjusted more conveniently, making the device easier to use.

[0039] When in use, after holding the fixed clamp arm 100 and the movable clamp arm 300, first squeeze the force block 1 603, cooperate with the hydraulic device 601 slidably connected to the force block 1 603, so that the pressure in the hydraulic device 601 increases, driving the elastic telescopic rod 604 and the arc rod 605 slidably connected to the hydraulic device 601 to move; the movement of the elastic telescopic rod 604 drives the pawl 607 assembled on its side to move, and the pawl 607 immediately moves to the side position of the ratchet 608 and engages with the ratchet 608, thereby limiting the rotation direction of the torsion spring block 400 through the pawl 607 and the ratchet 608, so that the torsion spring block 400 cannot rotate clockwise; the movement of the arc rod 605 drives the force plate 610 fixedly connected thereto to rotate, so that the force plate 610 drives the transmission shaft 609 fixedly connected thereto to rotate, and the transmission shaft 609 drives the arc blocking block 611 fixedly connected thereto to rotate, so that the hydraulic chamber 1 602 no longer When the cam 614 is in the blocked state, the second force block 612 is squeezed, and the hydraulic chamber 1 602 slidably connected to the second force block 612 is cooperated with the hydraulic chamber 1 602 to reduce the pressure in the hydraulic chamber 1 602, driving the sliding rod 613 slidably connected to the hydraulic chamber 1 602 to move away from the limit groove 614, thereby canceling the restriction of the limit rod 500 on the movable clamp arm 300; the opening angle of the open clamp can be adjusted by adjusting the distance between the fixed clamp arm 100 and the movable clamp arm 300, and when the movable clamp arm 300 squeezes the limit rod 500 due to rotation, the limit rod 500 is rotated counterclockwise by a certain angle; after the adjustment is completed, the second force block 612 and the first force block 603 are released in turn to reset the device. At this time, the limit groove 614 on the limit rod 500 can rotate clockwise under the action of the torsion spring block 400, and the sliding rod 613 is reset synchronously, so that the sliding rod 613 is stuck in the limit groove 614, limiting the device to a stable state.

[0040] Example 2

[0041] See also Figures 1-8On the basis of embodiment 1, a stabilizing assembly 700 is provided between the fixed pliers arm 100 and the movable pliers arm 300 and the pliers teeth 200. The stabilizing assembly 700 includes a hydraulic tank 2 701. One end of the hydraulic tank 2 701 is slidably connected to a transmission block 702, and the other end of the hydraulic tank 2 701 is slidably connected to a limiting block 703. The side of the transmission block 702 is equipped with a transmission plate 704. Two transmission plates 704 are respectively provided, and the two transmission plates 704 are respectively connected to the force block 1 603 and the force block 2 612. When both the force-bearing block 1 603 and the force-bearing block 2 612 are in an extruded state, they can respectively drive the assembled transmission plate 704 to move toward the side close to the central axis of the device, so that the transmission plate 704 drives the transmission block 702 fixed thereto to move, and cooperates with the hydraulic chamber 2 701 slidingly connected to the transmission block 702, so that the pressure in the hydraulic chamber 2 701 increases, driving the limiting block 703 slidingly connected to the hydraulic chamber 2 701 to move toward the side away from the central axis of the device. At this time, the jaws 200 can be inserted into the fixed jaw arm 100 and the movable jaw arm 300.

[0042] The interiors of the fixed pliers arm 100 and the movable pliers arm 300 are respectively connected to a connecting plate 706 via a second spring 705. The connecting plate 706 is fixedly connected to the limiting block 703. A through slot 707 is provided on the pliers teeth 200. The cross-sectional shape of the through slot 707 matches the cross-sectional shape of the limiting block 703. After the pliers teeth 200 are installed, when the first and second force blocks 603 and 612 are released, the limiting block 703 can be reset through the connecting plate 706 under the action of the second spring 705, thereby locking the pliers teeth 200 to the fixed pliers arm 100 and the movable pliers arm 300 through the limiting block 703 and the through slot 707, thereby improving the stability of the pliers teeth 200 during use.

[0043] When the lever 702 is in the locked position, the lever 703 is in the locked position, and the spring 705 is in the locked position, so that the lever 702 is locked in the locked position.

[0044] Example 3

[0045] See also Figures 1-10 In addition to the first and second embodiments, an auxiliary assembly 800 is provided between the fixed clamp arm 100 and the movable clamp arm 300. The auxiliary assembly 800 includes two fixed rods 801, one mounted on the fixed clamp arm 100 and the other on the movable clamp arm 300. A gear rod 802 is mounted on the side of the limiting block 703. When the limiting block 703 moves away from the central axis of the device, it drives the gear rod 802 fixedly connected to it to move.

[0046] The side of the fixed rod 801 is rotatably connected to a rotating shaft 803, and the outer sides of the rotating shaft 803 are respectively fixedly connected to a gear 804 and a clamping plate 805, and the gear 804 is meshed with the toothed rod 802. When the toothed rod 802 moves, the toothed rod 802 drives the gear 804 meshed with it to rotate, and the gear 804 drives the rotating shaft 803 fixedly connected to it to rotate, so that the rotating shaft 803 drives the clamping plates 805 fixedly connected to it to rotate, and the two clamping plates 805 are respectively separated from the fixed clamp arm 100 and the movable clamp arm 300, thereby opening; after the jaws 200 are installed, when the limit block 703 is reset, the two clamping plates 805 are immediately reset, and the two jaws 200 are auxiliary clamped, further improving the stability of the device during use.

[0047] During use, based on the first and second embodiments, when the limiting block 703 moves to the side away from the central axis of the device, it can drive the gear rod 802 fixedly connected thereto to move, so that the gear rod 802 drives the gear 804 meshing therewith to rotate, and the gear 804 drives the rotating shaft 803 fixedly connected thereto to rotate, so that the rotating shaft 803 drives the splint 805 fixedly connected thereto to rotate, and the two splints 805 respectively move away from the fixed clamp arm 100 and the movable clamp arm 300, thereby opening; after the teeth 200 are installed, when the limiting block 703 is reset, the two splints 805 are immediately reset to assist in clamping the two teeth 200.

[0048] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A novel orthopedic surgical distraction forceps, comprising a fixed forceps arm (100) and forceps teeth (200), wherein the bottom of the fixed forceps arm (100) is rotatably connected to a movable forceps arm (300), the side of the fixed forceps arm (100) is rotatably connected to a torsion spring block (400), and the bottom of the torsion spring block (400) is fixedly connected to a limiting rod (500); Its characteristics are: A spreading assembly (600) is provided between the fixed clamp arm (100) and the movable clamp arm (300), and the spreading assembly (600) comprises a hydraulic device (601) and a hydraulic chamber (602). One end of the hydraulic device (601) is slidably connected to a force block (603), one end of the hydraulic device (601) is slidably connected to an elastic telescopic rod (604), and the other end of the hydraulic device (601) is slidably connected to an arc rod (605). The bottom of the force block (603) is equipped with a spring (606), and the side of the elastic telescopic rod (604) is equipped with a ratchet (607). The front end of the torsion spring block (400) is transmission-connected to a ratchet (60 8), after the elastic telescopic rod (604) moves, it can drive the pawl (607) assembled on its side to move, and the pawl (607) then moves to the side position of the ratchet (608) and engages with the ratchet (608), thereby limiting the rotation direction of the torsion spring block (400) through the pawl (607) and the ratchet (608), so that the torsion spring block (400) cannot rotate clockwise, and the top of the movable clamp arm (300) is rotatably connected to the transmission shaft (609), the outer side of the transmission shaft (609) is fixedly connected to the force plate (610), the bottom of the transmission shaft (609) is fixedly connected to the arc-shaped blocking block (611), and one end of the hydraulic chamber (602) is slidably connected to the force plate (610). The force block 2 (612) is connected to the other end of the hydraulic chamber 1 (602) in a sliding manner with a sliding rod (613). The arc-shaped blocking block (611) is located in the inner position of the hydraulic chamber 1 (602). The side of the limiting rod (500) is provided with a limiting groove (614). When the arc-shaped rod (605) moves, it can drive the force plate (610) fixedly connected thereto to rotate, so that the force plate (610) drives the transmission shaft (609) fixedly connected thereto to rotate, and the transmission shaft (609) drives the arc-shaped blocking block (611) fixedly connected thereto to rotate, so that the hydraulic chamber 1 (602) is no longer in a blocked state. When the hydraulic chamber 1 (602) is no longer in a blocked state, the force block 2 (611) is squeezed. 612), cooperates with the hydraulic chamber one (602) that is slidably connected to the force-bearing block two (612), so that the pressure in the hydraulic chamber one (602) is reduced, driving the sliding rod (613) that is slidably connected to the hydraulic chamber one (602) away from the limiting groove (614), thereby canceling the restriction of the limiting rod (500) on the movable clamp arm (300), and the limiting groove (614) on the limiting rod (500) can rotate clockwise under the action of the torsion spring block (400), and the sliding rod (613) is reset synchronously, so that the sliding rod (613) is stuck in the limiting groove (614), and the force-bearing plate (610) is located at the side of the arc rod (605) and is fixed to the arc rod (605).

2. A novel orthopedic surgical distraction forceps according to claim 1, characterized in that: A stabilizing assembly (700) is provided between the fixed clamp arm (100) and the movable clamp arm (300) and the clamp teeth (200). The stabilizing assembly (700) includes a hydraulic chamber 2 (701), one end of the hydraulic chamber 2 (701) is slidably connected to a transmission block (702), the other end of the hydraulic chamber 2 (701) is slidably connected to a limiting block (703), a transmission plate (704) is mounted on the side of the transmission block (702), the interiors of the fixed clamp arm (100) and the movable clamp arm (300) are respectively connected to a connecting plate (706) by arranging a spring 2 (705), the connecting plate (706) is fixedly connected to the limiting block (703), and a through slot (707) is provided on the clamp teeth (200).

3. The novel orthopedic surgical distraction forceps according to claim 2, characterized in that: Two transmission plates (704) are provided, and the two transmission plates (704) are connected to the first force-bearing block (603) and the second force-bearing block (612) respectively.

4. The novel orthopedic surgical distraction forceps according to claim 3, characterized in that: The cross-sectional shape of the through slot (707) is adapted to the cross-sectional shape of the limiting block (703).

5. The novel orthopedic surgical distraction forceps according to claim 4, characterized in that: An auxiliary component (800) is provided between the fixed clamp arm (100) and the movable clamp arm (300), the auxiliary component (800) comprising a fixed rod (801), a gear rod (802) being mounted on the side of the limiting block (703), a rotating shaft (803) being rotatably connected to the side of the fixed rod (801), a gear (804) and a splint (805) being fixedly connected to the outer side of the rotating shaft (803), and the gear (804) being meshed with the gear rod (802).

6. The novel orthopedic surgical distraction forceps according to claim 5, characterized in that: Two fixing rods (801) are provided, and the two fixing rods (801) are respectively assembled on the fixed clamp arm (100) and the movable clamp arm (300).

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