Multifunctional forceps body for orthopedic surgery

Abstract

The invention relates to the field of medical auxiliary instruments, in particular to a multifunctional forceps body for orthopedic surgery, which comprises a mounting shell, clamping forceps are rotatably mounted at the left part of the mounting shell, a torsion spring is mounted between the corresponding clamping forceps and the mounting shell, and a movable screw rod is rotatably connected in the mounting shell. The rotating ring is rotatably connected to the threaded end of the right portion of the lead screw, the sliding ring is slidably connected to the rotating ring, limited by the mounting shell and slidably connected to the rotating ring, the bottom of the sliding part is meshed with the threaded portion of the movable lead screw, and the first spring is mounted between the sliding part and the rotating ring. The transmission mechanism with the fluted disc and the inner gear ring is driven through the rotating ring, the sliding piece in the meshed state is combined to push the lead screw to move in the axial direction, and fine adjustment and reliable locking of the clamping force are achieved; when the sliding ring is pressed, meshing between the sliding piece and the lead screw is released instantly, the clamping pincers are automatically bounced off under the action of the torsional spring, and single-hand quick release is achieved.

Description

Technical Field

[0001] The present invention relates to the field of medical auxiliary instruments, and in particular to a multifunctional forceps body for orthopedic surgery. Background Art

[0002] In traditional orthopedic surgery, operations such as bone screw clamping, bone plate cutting, and bone screw bending often require frequent replacement of different instruments, which prolongs the operation time and increases the complexity of the operation. Existing bone clamps generally have the following limitations: First, the clamping mechanism is mostly driven by a simple lever or screw, and the clamping force and precision are difficult to control, especially when operated with one hand. It is difficult to fine-tune the tightness; second, bone screws come in various specifications, and traditional clamps lack an adjustment structure that can quickly adapt to different diameters, resulting in unstable clamping or damage to the bone screws; third, cutting steel plates or bending bone screws requires additional tools, interrupting the continuity of the operation; fourth, there is a lack of an efficient unlocking mechanism, and releasing the bone screw requires two-handed operation or repeated loosening of the screw. Although some integrated tools have been tried, the core clamping locking and quick release mechanisms are still not optimized, and cannot simultaneously meet the requirements of precise locking and instantaneous unlocking, affecting surgical efficiency and safety.

[0003] Therefore, a multifunctional forceps body for orthopedic surgery is now developed in response to the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing devices when in use, the present invention provides a multifunctional forceps body for orthopedic surgery.

[0005] The technical solution of the present invention is: a multifunctional forceps for orthopedic surgery, comprising: Install the housing; A clamping clamp, wherein the clamping clamp is rotatably mounted on the left side of the mounting housing; a torsion spring, the torsion spring being installed between the corresponding clamping jaws and the mounting housing; A movable screw rod, the movable screw rod being rotatably connected to the interior of the mounting housing; a rotating ring, the rotating ring being rotatably connected to the threaded end on the right side of the screw rod; a sliding ring, the sliding ring being slidably connected to the rotating ring and limited by the mounting housing; a sliding member, the sliding member being slidably connected to the rotating ring, the bottom of the sliding member being engaged with the threaded portion of the moving screw; a first spring installed between the sliding member and the rotating ring; a toothed disc connected to the rotating ring; an inner gear ring, the inner gear ring being rotatably connected to the mounting housing and meshing with the toothed disc; A limiting tube, which is arranged on the right side of the mounting housing and is used to limit the movable screw rod; A second spring is installed between the movable screw rod and the limiting tube.

[0006] In a preferred embodiment of the present invention, it also includes: A contact member, wherein the contact member is slidably connected in the corresponding clamping jaw; A top piece is installed in the corresponding clamping forceps and is used to change the position of the contact piece. Inserting different numbers of the top pieces allows the contact piece to move outward to adapt to different types of bone screws.

[0007] In a preferred embodiment of the present invention, it also includes: a mounting bracket, the mounting bracket being mounted on the left side of the mounting housing; A positioning post, mounted on the upper side of the mounting housing, for positioning and mounting the mounting bracket; A cutting piece is rotatably connected to the mounting frame and is used for quickly cutting the steel plates that need to be used.

[0008] In a preferred embodiment of the present invention, a ruler is further included, which is installed on the mounting frame and is used to quickly calculate the cutting size of the steel plate.

[0009] In a preferred embodiment of the present invention, it also includes: a first friction member, the first friction member being mounted on the lower portion of the mounting housing; The second friction member is installed in the recesses on the front and rear sides of the installation shell.

[0010] In a preferred embodiment of the present invention, it also includes: A limit plate, the limit plate being mounted on the top of the clamping pliers; A bending piece is installed between the corresponding limiting plates and is used to bend the bone screw.

[0011] In a preferred embodiment of the present invention, the left portion of the movable screw rod is provided with a circular pushing block, and the pushing block is in contact connection with the inner side of the clamping pliers.

[0012] In a preferred embodiment of the present invention, both the front and rear sides of the sliding ring are provided with anti-slip assist blocks.

[0013] In a preferred embodiment of the present invention, the mounting bracket and the mounting shell are a detachable connection structure.

[0014] In a preferred embodiment of the present invention, the inner sides of the bending parts are all arc-surface structures.

[0015] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: 1. The present invention drives the toothed disc-internal gear ring transmission mechanism through a rotating ring, and the sliding member in the meshing state pushes the screw to move axially, thereby achieving fine adjustment of the clamping force and reliable locking; pressing the sliding ring instantly releases the engagement between the sliding member and the screw, and the clamping pliers automatically pop open under the action of the torsion spring, realizing quick release with one hand.

[0016] 2. The present invention integrates cutting parts and rulers through a detachable mounting frame to achieve precise cutting of steel plates. The limit plate cooperates with the arc-shaped bending part to ensure that the bending angle of the bone screw is controllable and the stress is uniform. The entire process of clamping, cutting and bending can be completed with one hand, which significantly shortens the operation time and reduces the frequency of instrument replacement and operator fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0019] Figure 3 It is a schematic diagram of a second partial cross-sectional three-dimensional structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the first partial three-dimensional structure of the present invention.

[0021] Figure 5 It is a schematic diagram of a third partial cross-sectional three-dimensional structure of the present invention.

[0022] Figure 6 This is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0023] Figure 7 This is a schematic diagram of a third partial three-dimensional structure of the present invention.

[0024] Figure 8 This is a schematic diagram of a fourth partial three-dimensional structure of the present invention.

[0025] Among them, the above-mentioned drawings include the following figure marks: 1. Mounting shell, 2. Clamping pliers, 3. Torsion spring, 4. Moving screw, 5. Rotating ring, 6. Sliding ring, 7. Sliding part, 8. First spring, 9. Toothed disk, 10. Inner gear ring, 11. Contact part, 12. Top part, 13. Mounting frame, 14. Positioning column, 15. Cutting part, 16. Ruler, 17. First friction part, 18. Second friction part, 19. Bending part, 20. Limiting plate, 21. Limiting tube, 22. Second spring. DETAILED DESCRIPTION

[0026] Although the present invention may be described with respect to a specific application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those skilled in the art will recognize that terms such as "above," "below," "upwardly," "downwardly," and the like are used to describe the drawings and are not intended to limit the scope of the present invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and are not intended to limit the scope of the present invention in any way.

[0027] A multifunctional forceps for orthopedic surgery, such as Figures 1-8 The present invention relates to a sliding member 2, which is a kind of sliding member 2, which is a kind of sliding member 2 and a kind of sliding member 3. The sliding member 2 is a kind of sliding member 2 which is a kind of sliding member 3. The sliding member 2 is a kind of sliding member 2 which is a kind of sliding member 3. The sliding member 2 is a kind of sliding member 2 which is a kind of sliding member 3. The sliding member 2 is a kind of sliding member 2 which is a kind of sliding member 3. The sliding member 2 is a kind of sliding member 2 which is a kind of sliding member 3. The sliding member 2 is a kind of sliding member 3. The sliding member 2 is a kind of sliding member 3. The sliding member 2 is a kind of sliding member 3. 11 is slidably connected in the corresponding clamping clamp 2, and the top piece 12 is installed in the corresponding clamping clamp 2 for changing the position of the contact piece 11. Inserting different numbers of top pieces 12 allows the contact piece 11 to move outward to adapt to different types of bone screws. The mounting frame 13 is installed on the left side of the mounting shell 1. The mounting frame 13 and the mounting shell 1 are a detachable connection structure. The positioning column 14 is installed on the upper side of the mounting shell 1 for positioning and installing the mounting frame 13. The cutting piece 15 is rotatably connected to the mounting frame 13 for quickly cutting the steel plate to be used. The ruler 16 is installed on the mounting frame 13 for quickly calculating the cutting size of the steel plate. The first friction piece 17 is installed at the lower part of the mounting shell 1, and the second friction piece 18 is installed in the recesses on the front and rear sides of the mounting shell 1. The limit plate 20 is installed on the top of the clamping clamp 2, and the bending piece 19 is installed between the corresponding limit plates 20 for bending the bone screw. The inner side of the bending piece 19 is a curved surface structure.

[0028] It should be noted that when the multifunctional pliers for orthopedic surgery are in the initial non-clamping state, the clamping pliers 2 remain open under the elastic pre-tightening force of the torsion spring 3. When the operator needs to clamp a bone screw or bone tissue, he first ensures that the meshing structure at the bottom of the sliding member 7 is in meshing state with the threaded end on the right side of the movable screw rod 4 (the first spring 8 presses it toward the screw rod to maintain meshing). At this time, the operator places his thumb on the anti-slip assist block of the sliding ring 6, holds the mounting shell 1 with one hand, and rotates the rotating ring 5 with his thumb. Since the toothed disc 9 is fixedly connected to the rotating ring 5, and the toothed disc 9 is meshed with the inner toothed ring 10 rotatably mounted on the mounting shell 1, the rotation of the rotating ring 5 drives the toothed disc 9 to rotate inside the inner toothed ring 10. The inner toothed ring 10-toothed disc 9 meshing structure actually forms A force-amplifying transmission pair. When the rotating ring 5 rotates, it forms a rigid connection with the moving screw 4 through the sliding member 7 (which is engaged with the threaded portion of the screw at this time). The rotation of the rotating ring 5 will force the moving screw 4 (because it cannot slip due to engagement) to perform spiral motion along its own axis. Specifically, rotating the rotating ring 5 will drive the moving screw 4 to move axially to the right, causing the second spring 22 to be compressed. The circular pushing block set at the left end of the moving screw 4 will move to the right accordingly, from the initial position where it does not interfere with the inside of the clamping clamp 2, it will gradually press toward the inside of the clamping clamp 2. Since the clamping clamp 2 is hinged to the mounting shell 1 at the rotating point, the rightward thrust of the pushing block will force the two clamping clamps 2 to overcome the weak tension (initial opening force) of the torsion spring 3 and begin to close inward around the hinge point. The operator can accurately control the distance that the moving screw 4 moves to the right by continuously rotating the rotating ring 5, thereby accurately controlling the degree of pushing of the pushing block on the clamping forceps 2, and finally achieving a stable and controllable clamping force of the clamping forceps 2 on the bone screw or bone tissue. The engagement of the inner gear ring 10 and the toothed disk 9 provides a sense of stability during operation and a certain transmission ratio, which is conducive to fine force application. When the clamping action is completed, the closed state of the clamping forceps 2 is locked by the position of the moving screw 4. At this time, the pushing block continuously presses against the inner side of the clamping forceps 2 to prevent it from opening by itself under the action of the torsion spring 3. If different types (diameters) of bone screws need to be adapted during surgery, the operation can be performed in the installation state or before clamping: the required number of ejectors 12 are inserted into the corresponding specific slots on the inner side of the clamping forceps 2, and the ejectors are pressed against the inner side of the clamping forceps 2. 12 will press against the contact piece 11 originally located on the inner side of the clamping pliers 2, pushing the contact piece 11 to overcome the resistance and slide outward along the inner groove of the clamping pliers 2 for a distance. The more the top pieces 12 are inserted (such as 1 piece is suitable for small-diameter bone screws, and 2 pieces are suitable for medium-diameter ones), the greater the distance the contact piece 11 slides outward, thereby equivalently increasing the initial spacing between the openings of the clamping pliers 2, so that it can stably adapt to thicker bone screws. When the operator needs to quickly release the clamped object, the thumb pushes the anti-slip assist blocks on both sides of the sliding ring 6 to the right with force. The sliding ring 6 slides under the finger pressure, and no longer presses the sliding piece 7. At this time, the sliding piece 7 moves upward under the elastic force of the first spring 8. The upward movement of the sliding piece 7 will cause the meshing structure at its bottom to disengage from the threaded end of the moving screw rod 4.At this time, the rigid connection between the rotating ring 5 and the movable screw 4 (achieved by the engagement of the sliding member 7) is instantly released. At the moment of disengagement, the pushing block is no longer locked in the left push position by the movable screw 4. Under the action of the second spring 22, the movable screw 4 is quickly reset to the left. At the same time, the clamping forceps 2 are quickly rebounded (rebounded to the initial open state) under the strong recovery action of the torsion spring 3, and the clamped object is released instantly. After that, the sliding ring 6 is pushed back to its original position, and the sliding member 7 is pushed to automatically reset, so that the meshing structure at its bottom is re-engaged with the threaded portion at the right end of the movable screw 4, preparing for the next clamping operation. If it is necessary to cut the connecting steel plate on site during the operation, the operator can position and install the special mounting frame 13 with the cutting piece 15 and the ruler 16 to the mounting housing through the positioning column 14 1, place the steel plate between the fixed edge of the mounting frame 13 and the rotating edge of the cutting member 15. Determine the cutting length according to the scale 16, and press down the handle of the cutting member 15 to complete the shearing. When bending the bone screw, place the part of the bone screw to be bent in the arc space formed by the two bending members 19 at the top of the clamping forceps 2. Grip the clamp body and apply a twisting force. The finely ground arc surface on the inside of the bending member 19 can be used to bend the bone screw safely and controllably. The first friction member 17 and the second friction member 18 on the mounting housing 1 provide reliable grip and anti-slip properties. This device integrates two key and independent operating modes: precise clamping control and quick release. Seamless switching is achieved through the engagement or disengagement mechanism of the sliding member 7, greatly improving the flexibility and efficiency of orthopedic surgery.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A multifunctional forceps for orthopedic surgery, characterized by: Includes: Install the housing (1); A clamping clamp (2), wherein the clamping clamp (2) is rotatably mounted on the left side of the mounting housing (1); a torsion spring (3), the torsion spring (3) being mounted between the corresponding clamping pliers (2) and the mounting housing (1); A movable screw rod (4), the movable screw rod (4) being rotatably connected to the interior of the mounting housing (1); A rotating ring (5), the rotating ring (5) being rotatably connected to the threaded end on the right side of the screw rod; A sliding ring (6), the sliding ring (6) is slidably connected to the rotating ring (5) and is limited by the mounting housing (1); A sliding member (7) is connected to the rotating ring (5) in a sliding manner, and the bottom of the sliding member (7) is engaged with the threaded portion of the movable screw rod (4); a first spring (8), the first spring (8) being installed between the sliding member (7) and the rotating ring (5); a toothed disc (9), the toothed disc (9) being connected to the rotating ring (5); An inner gear ring (10), the inner gear ring (10) being rotatably connected to the mounting housing (1) and meshing with the toothed disc (9); A limiting tube (21), the limiting tube (21) being arranged in the right portion of the mounting housing (1) and being used to limit the movable screw rod (4); A second spring (22), the second spring (22) is installed between the movable screw rod (4) and the limiting tube (21).

2. The multifunctional forceps for orthopedic surgery according to claim 1, characterized in that: Also included are: A contact piece (11), the contact piece (11) being slidably connected in the corresponding clamping pliers (2); A top piece (12) is installed in the corresponding clamp (2) and is used to change the position of the contact piece (11). Inserting different numbers of the top pieces (12) allows the contact piece (11) to move outward to adapt to different types of bone screws.

3. The multifunctional forceps for orthopedic surgery according to claim 2, characterized in that: Also included are: A mounting frame (13), the mounting frame (13) being mounted on the left side of the mounting housing (1); A positioning column (14), the positioning column (14) being mounted on the upper side of the mounting housing (1) and being used for positioning and mounting the mounting frame (13); A cutting piece (15) is rotatably connected to the mounting frame (13) and is used for quickly cutting the steel plate to be used.

4. The multifunctional forceps for orthopedic surgery according to claim 3, characterized in that: It also includes a ruler (16), which is mounted on the mounting frame (13) and is used to quickly calculate the cutting size of the steel plate.

5. The multifunctional forceps for orthopedic surgery according to claim 4, characterized in that: Also included are: A first friction member (17), the first friction member (17) being mounted on the lower portion of the mounting housing (1); A second friction member (18), the second friction member (18) is mounted in recesses on the front and rear sides of the mounting housing (1).

6. The multifunctional forceps for orthopedic surgery according to claim 5, characterized in that: Also included are: A limit plate (20), the limit plate (20) being mounted on the top of the clamping pliers (2); A bending piece (19) is installed between the corresponding limiting plates (20) and is used to bend the bone screw.

7. The multifunctional forceps for orthopedic surgery according to claim 1, characterized in that: The left portion of the movable screw rod (4) is provided with a circular pushing block, and the pushing block is in contact connection with the inner side of the clamping pliers (2).

8. The multifunctional forceps for orthopedic surgery according to claim 1, characterized in that: The sliding ring (6) is provided with anti-slip assist blocks on both the front and rear sides.

9. The multifunctional forceps for orthopedic surgery according to claim 3, characterized in that: The mounting frame (13) and the mounting housing (1) are a detachable connection structure.

10. The multifunctional forceps for orthopedic surgery according to claim 6, characterized in that: The inner sides of the bending parts (19) are all cambered structures.

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