Novel distraction forceps for orthopedic surgery

Abstract

The invention discloses a pair of novel opening forceps for orthopedic surgery, and relates to the technical field of medical instruments. The novel opening forceps for the orthopedic surgery comprise a fixed forceps arm and forceps teeth, the bottom of the fixed forceps arm is rotationally connected with a movable forceps arm, the side face of the fixed forceps arm is rotationally connected with a torsional spring block, and the bottom of the torsional spring block is fixedly connected with a limiting rod; an opening assembly is arranged between the fixed clamp arm and the movable clamp arm and comprises a hydraulic device and a first hydraulic bin, and one end of the hydraulic device is slidably connected with a first stress block. According to the novel distraction forceps for the orthopedic surgery, after the fixed forceps arm and the movable forceps arm are held, the opening angle of the distraction forceps can be adjusted more conveniently in cooperation with a hydraulic device, a first hydraulic bin, a first stress block, an elastic telescopic rod, an arc-shaped rod, a first spring, a pawl, a ratchet wheel, a transmission shaft, a stress plate, an arc-shaped blocking block, a second stress block, a sliding rod and a limiting groove; and the device is easier to use.

Description

Technical Field

[0001] The 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 be displaced or degenerated due to the force of the surgery.

[0003] However, the existing new orthopedic surgical spreader forceps often use racks and fixed teeth to restrict the two clamp arms accordingly, so as to maintain the stability of the spreader forceps when in use. However, when the device needs to adjust the distance between the two clamp arms, it is necessary to manually move the fixed teeth away from the rack to release the restriction between the two clamp 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 view of the shortcomings of the prior art, the present invention provides a new orthopedic surgical distraction forceps, which solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical scheme: a new orthopedic surgical distraction forceps, comprising a fixed forceps arm and forceps teeth, 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 limit rod;

[0005] The cam is provided with a plurality of movable members, and the movable members are provided with a plurality of movable members, and the movable members are provided with a plurality of movable members. The plurality of movable members are provided with a plurality of movable members, and the plurality of movable members are provided with a plurality of movable members.

[0006] Preferably, the force-bearing plate is located at a side position 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 one.

[0008] Preferably, a stabilizing component is provided between the fixed pliers arm and the movable pliers arm and the pliers teeth, and the stabilizing component includes a hydraulic tank 2, one end of the hydraulic tank 2 is slidably connected to a transmission block, the other end of the hydraulic tank 2 is slidably connected to a limiting block, a transmission plate is mounted on the side of the transmission block, the interiors of the fixed pliers arm and the movable pliers arm are respectively connected to connecting plates by setting spring 2, the connecting plates are fixedly connected to the limiting block, and a passing groove is provided on the pliers 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 matches 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 side of the limiting block is equipped with a gear rod, 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 clamp, and the gear is meshed 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 orthopedic surgical distraction forceps, which has the following beneficial effects:

[0014] (1) The novel orthopedic surgery distraction forceps can be used to hold the fixed forceps arm and the movable forceps arm, and then cooperate 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 to more conveniently adjust the opening angle of the distraction forceps, making the device easier to use.

[0015] (2) After the force blocks 1 and 2 are squeezed, the new orthopedic surgery distraction forceps can be locked on the fixed forceps arm and the movable forceps arm by cooperating with the hydraulic chamber 2, the transmission block, the limiting block, the transmission plate, the spring 2, the connecting plate and the through slot, thereby improving the stability of the forceps when in use.

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

[0017] Figure 1 It 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 It is a schematic diagram of the three-dimensional structure of the propping assembly of the present invention;

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

[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 It 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] Fig. 9 It is a schematic diagram of the three-dimensional structure of the auxiliary component of the present invention;

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

[0027] In the figure:

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

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

[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 described clearly and completely 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] Embodiment 1

[0034] See also Figure 1-Figure 6 A novel orthopedic distraction forceps comprises 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;

[0035] An opening assembly 600 is arranged between the fixed clamp arm 100 and the movable clamp arm 300. The opening assembly 600 includes a hydraulic device 601 and a hydraulic chamber 1 602. One end of the hydraulic device 601 is slidably connected to a force block 1 603. One 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 an arc rod 605. After holding the fixed clamp arm 100 and the movable clamp arm 300, the force block 1 603 is squeezed first, and the hydraulic device 601 slidably connected to the force block 1 603 is matched, so that the pressure in the hydraulic device 601 increases, and the elastic telescopic rod 604 and the arc rod 605 slidably connected to the hydraulic device 601 are driven 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 the ratchet 608. When the elastic telescopic rod 604 moves, the pawl 607 installed on its side can be driven to move, and the pawl 607 then moves to the side position of the ratchet 608 and meshes 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.

[0037] The top of the movable clamp arm 300 is rotatably connected to a transmission shaft 609, and a force plate 610 is fixedly connected to the outside of the transmission shaft 609. The force plate 610 is located at the side of the arc rod 605 and is fixed to the arc rod 605. The bottom of the transmission shaft 609 is fixedly connected to an arc block 611, which is located inside the hydraulic chamber 1 602. One end of the hydraulic chamber 1 602 is slidably connected to a force block 2 612. When the arc 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 block 611 fixedly connected thereto to rotate, so that the hydraulic chamber 1 602 is no longer in a blocked state.

[0038] The other end of the hydraulic chamber 1 602 is slidably connected with 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 is cooperated to reduce the pressure in the hydraulic chamber 1 602, driving the sliding rod 613 slidably connected to the hydraulic chamber 1 602 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 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, and the device is restricted in 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-bearing block 1 603, cooperate with the hydraulic device 601 slidably connected to the force-bearing 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 then moves to the side position of the ratchet 608 and meshes 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-bearing plate 610 fixedly connected thereto to rotate, so that the force-bearing 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 compartment 1 602 is no longer When the movable clamp arm 300 is in a blocked state, the force-bearing block 2 612 is squeezed, and the hydraulic chamber 1 602 slidably connected to the force-bearing block 2 612 is cooperated, 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 is driven 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 squeezes the limiting rod 500 due to rotation, the limiting rod 500 is rotated counterclockwise by a certain angle; after the adjustment is completed, the force-bearing block 2 612 and the force-bearing block 1 603 are released in turn to reset the device. At this time, 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 device is restricted in a stable state.

[0040] Embodiment 2

[0041] See also Figure 1-Figure 8On the basis of the first embodiment, a stabilizing assembly 700 is arranged between the fixed clamp arm 100 and the movable clamp arm 300 and the clamp teeth 200, and the stabilizing assembly 700 includes a hydraulic chamber 2 701, one end of the hydraulic chamber 2 701 is slidably connected with a transmission block 702, and the other end of the hydraulic chamber 2 701 is slidably connected with a limiting block 703, and the side of the transmission block 702 is equipped with a transmission plate 704, and two transmission plates 704 are respectively arranged, and the two transmission plates 704 are respectively connected to the force block 1 603 and the force block 2 612. When the force block 1 603 and the force block 2 612 are both in the squeezed 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 fixedly connected thereto to move, and cooperates with the hydraulic chamber 2 701 slidably connected to the transmission block 702, so that the pressure in the hydraulic chamber 2 701 increases, driving the limiting block 703 slidably 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 interior of the fixed clamp arm 100 and the movable clamp arm 300 are respectively connected with a connecting plate 706 by setting a second spring 705, and the connecting plate 706 is fixedly connected to the limiting block 703. A through slot 707 is provided on the clamp tooth 200, and the cross-sectional shape of the through slot 707 is adapted to the cross-sectional shape of the limiting block 703. After the installation of the clamp tooth 200 is completed, when the force block 1 603 and the force block 2 612 are released, the limiting block 703 can be reset through the connecting plate 706 under the action of the second spring 705, so that the clamp tooth 200 is locked on the fixed clamp arm 100 and the movable clamp arm 300 through the limiting block 703 and the through slot 707, thereby improving the stability of the clamp tooth 200 when in use.

[0043] When in use, on the basis of Example 1, the force-bearing block 1 603 and the force-bearing block 2 612 are both in the squeezed state, and they can respectively drive the assembled transmission plate 704 to move to the side close to the central axis of the device, so that the transmission plate 704 drives the transmission block 702 fixedly connected thereto to move, and cooperates with the hydraulic chamber 2 701 slidably connected to the transmission block 702, so that the pressure in the hydraulic chamber 2 701 increases, and drives the limiting block 703 slidably connected to the hydraulic chamber 2 701 to move to the side away from the central axis of the device. At this time, the jaws 200 can be inserted into the fixed clamp arm 100 and the movable clamp arm 300. After the installation of the jaws 200 is completed, when the force-bearing block 1 603 and the force-bearing block 2 612 are released, the limiting block 703 can be reset through the connecting plate 706 under the action of the spring 2 705, so that the jaws 200 are locked on the fixed clamp arm 100 and the movable clamp arm 300 through the limiting block 703 and the through groove 707.

[0044] Embodiment 3

[0045] See also Figure 1-Figure 10 On the basis of the first and second embodiments, an auxiliary assembly 800 is provided between the fixed clamp arm 100 and the movable clamp arm 300, and the auxiliary assembly 800 includes a fixed rod 801, and two fixed rods 801 are provided, and the two fixed rods 801 are respectively assembled on the fixed clamp arm 100 and the movable clamp arm 300, and a gear rod 802 is assembled on the side of the limiting block 703. When the limiting block 703 moves to the side away from the central axis of the device, the gear rod 802 fixedly connected thereto can be driven to move.

[0046] The side of the fixed rod 801 is rotatably connected to a rotating shaft 803, and the outer side of the rotating shaft 803 is 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 plate 805 fixedly connected to it to rotate, and the two clamping plates 805 are respectively away from the fixed clamp arm 100 and the movable clamp arm 300, so as to open; after the clamp teeth 200 are installed, when the limiting block 703 is reset, the two clamping plates 805 are reset immediately to assist in clamping the two clamp teeth 200, further improving the stability of the device when in use.

[0047] During use, on the basis of Embodiment 1 and Embodiment 2, 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 clamping plate 805 fixedly connected thereto to rotate, and the two clamping plates 805 are respectively away from the fixed clamp arm 100 and the movable clamp arm 300, thereby opening; after the jaws 200 are installed, when the limiting block 703 is reset, the two clamping plates 805 are immediately reset to assist in clamping the two jaws 200.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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 limit rod (500); Features: An expansion assembly (600) is arranged between the fixed clamp arm (100) and the movable clamp arm (300), and the expansion 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 spring (606). A ratchet (607) is provided, the front end of the torsion spring block (400) is transmission-connected with a ratchet (608), the top of the movable clamp arm (300) is rotationally connected with a transmission shaft (609), the outer side of the transmission shaft (609) is fixedly connected with a force plate (610), the bottom of the transmission shaft (609) is fixedly connected with an arc-shaped blocking block (611), one end of the hydraulic chamber 1 (602) is slidably connected with a force block 2 (612), the other end of the hydraulic chamber 1 (602) is slidably connected with a sliding rod (613), and a limiting groove (614) is provided on the side of the limiting rod (500).

2. A novel orthopedic surgical distraction forceps according to claim 1, characterized in that: The force-bearing plate (610) is located on the side of the arc-shaped rod (605) and is in a fixed state with the arc-shaped rod (605).

3. The novel orthopedic surgical distraction forceps according to claim 1, characterized in that: The arc-shaped blocking block (611) is located inside the hydraulic chamber 1 (602).

4. The novel orthopedic surgical distraction forceps according to claim 1, characterized in that: A stabilizing assembly (700) is arranged between the fixed clamp arm (100) and the movable clamp arm (300) and the clamp teeth (200). The stabilizing assembly (700) comprises a hydraulic chamber (701), one end of which is slidably connected to a transmission block (702), and the other end of which 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 connecting plates (706) by means of springs (705). The connecting plates (706) are fixedly connected to the limiting block (703). A through slot (707) is provided on the clamp teeth (200).

5. A novel orthopedic surgical distraction forceps according to claim 4, 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.

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

7. The novel orthopedic surgical distraction forceps according to claim 1, characterized in that: An auxiliary component (800) is arranged between the fixed clamp arm (100) and the movable clamp arm (300), and the auxiliary component (800) includes a fixed rod (801), a side of the limiting block (703) is equipped with a gear rod (802), the side of the fixed rod (801) is rotatably connected to a rotating shaft (803), and the outer side of the rotating shaft (803) is respectively fixedly connected with a gear (804) and a clamp (805), and the gear (804) is meshed with the gear rod (802).

8. The novel orthopedic surgical distraction forceps according to claim 7, 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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