Bone holding forceps
By designing the storage structure of the locking rack between the clamping arms in the bone holding forceps, the problem of the locking rack occupying space leads to occlusion of the surgical field of view, and the clarity of the surgical field of view and the smoothness of the surgical process is achieved.
Patent Information
- Application Number
- CN202421007098.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing bone-holding forceps locking rack extends from one side of the clamping arm, occupying space, causing the doctor's surgical field to be blocked, affecting the smooth progress of the operation.
A bone holding forceps are designed, and the locking racks avoid the space occupied by the locking racks by completing the locking work between the first clamping arm and the second clamping arm. A specific implementation includes providing a fixing plate and a freely rotating gear on the inner side wall of the second clamping arm, and the movable end of the locking rack passes between the gear and the inner side wall of the second clamping arm, and meshes with the gear.
By storing the closure rack between the clamping arms, the closure rack avoids blocking the doctor's field of vision, ensuring clear vision during the operation, and improving the smoothness of the operation.
Smart Images
Figure CN222549285U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of orthopedic clamping instruments, in particular to a bone holding forceps. Background Art
[0002] In medical surgery, especially orthopedic surgery, bone clamps are an important surgical tool that is widely used to fix and clamp bones so that doctors can perform precise operations. The traditional bone clamp design usually includes a clamping arm, a clamping claw, a locking rack and other parts. When in use, the two clamping arms are locked together by the locking rack so that the clamping claw maintains the clamping state on the bone.
[0003] The locking rack of the existing bone clamps on the market extends from one side of the clamping arm, taking up a part of the space, which easily blocks the doctor's surgical field of view, resulting in the inability to smoothly carry out the operation. Utility Model Content
[0004] The utility model aims to provide a bone holding forceps which can reduce the space occupied by the locking rack and avoid blocking the doctor's field of vision.
[0005] The bone clamp comprises a first clamping arm and a second clamping arm, which are hinged to each other and swing up and down, the inner wall of the first clamping arm is hinged with a locking rack that swings up and down, the inner wall of the second clamping arm is fixed with two fixing plates distributed front and back, a freely rotating gear is arranged between the two fixing plates, the movable end of the locking rack passes through between the gear and the inner wall of the second clamping arm and meshes with the gear; the locking rack has an arc-shaped structure, and the gear is located on the inner arc of the locking rack; a rotating column is fixed at the center of the gear, a mounting hole for the rotating column to be independently inserted is opened on the fixing plate, one end of the rotating column is independently transmitted out of the mounting hole and is connected with a ratchet, and a pawl limited to clockwise rotation of the ratchet is arranged on the second clamping arm.
[0006] Furthermore, the pawl is hinged on the second clamping arm through a first hinge column, and the second clamping arm is provided with an elastic component that pushes the pawl to engage with the ratchet wheel.
[0007] Furthermore, the elastic component includes a spring sheet, a fixing block is fixed on the second clamping arm, one end of the spring sheet is fixed on the fixing block, and the other end thereof rests on the pawl.
[0008] Furthermore, a lever is fixed to the hinged end of the pawl.
[0009] Furthermore, the lever and the pawl are integrally formed.
[0010] Furthermore, the shifting end of the shifting rod is located outside the second clamping arm.
[0011] Furthermore, a hinge seat is fixed on the inner side wall of the first clamping arm, and the hinge end of the locking rack is connected to the hinge seat through a second hinge column.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] The utility model completes the locking work by accommodating the locking rack between the first clamping arm and the second clamping arm, thereby preventing the locking rack from blocking the doctor's sight during the operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a three-dimensional structural diagram of the utility model;
[0016] Figure 3 This is a diagram of the use state of the utility model;
[0017] Figure 4 It is the exploded structure diagram of the utility model;
[0018] Figure 5 for Figure 4 A is a schematic diagram of the local enlarged structure;
[0019] The names of the components in the figure are: 1. first clamping arm 2, second clamping arm 3, locking rack 4, fixing plate 5, shifting rod 6, spring sheet 7, fixing block 8, pawl 9, ratchet 10, gear. DETAILED DESCRIPTION
[0020] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
[0021] Example
[0022] A bone holding forceps described in this embodiment, such as Figures 1 to 4As shown, it includes a first clamping arm 1 and a second clamping arm 2, which are hinged to each other and swing up and down, and also includes a first clamp jaw, a second clamp jaw, a first finger ring and a second finger ring; during production, the first clamp jaw, the first clamp arm 1 and the first finger ring are integrated; the second clamp jaw, the second clamp arm 2 and the second finger ring are integrated; the first clamp jaw is located at the left end of the first clamp arm 1, and the first finger ring is located at the right end of the first clamp arm 1; the second clamp jaw is located at the left end of the second clamp arm 2, and the second finger ring is located at the right end of the second clamp arm 2; the connection between the first clamp jaw and the first clamp arm 1 is hinged at the connection between the second clamp jaw and the second clamp arm 2; when in use, the doctor's fingers pass through the first finger ring and the second finger ring respectively, and the first clamp jaw and the second clamp jaw are clamped through the swing of the first clamp arm 1 and the second clamp arm 2.
[0023] like Figure 2 As shown, the inner wall of the first clamping arm 1 is hinged with a locking rack 3 that swings up and down, and a hinge seat is fixed on the inner wall of the first clamping arm 1. The hinge end of the locking rack 3 is connected to the hinge seat through a second hinge column, and the hinge seat and the first clamping arm 1 are integrally formed.
[0024] In this embodiment, the inner side refers to the space between the first clamping arm 1 and the second clamping arm 2 as the inner side, whereas the space away from the middle space is the outer side.
[0025] Two fixing plates 4 distributed front and back are fixed to the inner wall of the second clamping arm 2. In order to increase the stability of the structure, the fixing plate 4 and the second clamping arm 2 can be set as one body, and a freely rotating gear 10 is arranged between the two fixing plates 4. The movable end of the locking rack 3 passes through between the gear 10 and the inner wall of the second clamping arm 2 and meshes with the gear 10; the locking rack 3 has an arc-shaped structure, and the gear 10 is located on the inner arc of the locking rack 3; the outer arc of the locking rack 3 fits with the inner wall of the second clamping arm 2, and the space between the gear 10 and the inner wall of the second clamping arm 2 is limited, which can just accommodate the locking rack 3 passing through, and the gear 10 and the second clamping arm 2 are connected. The locking rack 3 passing between the inner walls of the two clamping arms 2 can only mesh with the gear 10 due to space limitations, and the tooth grooves on the locking rack 3 are distributed along the length direction of the locking rack 3 and are located on its inner arc; during production, the locking rack 3 can also be meshed with the gear 10 by arranging an elastic pad between the outer arc of the locking rack 3 and the inner wall of the second clamping arm 2. The elastic pad is made of silicone material and is fixed to the inner wall of the second clamping arm 2 when in use. The locking rack 3 is meshed with the gear 10 through its elasticity. At the same time, it can also be used to prevent the locking rack 3 from having possible movement conflicts with the second clamping arm 2 when swinging.
[0026] A rotating column is fixed at the center of the gear 10. The rotating column and the gear 10 are integrally formed. The rotation of the gear 10 can drive the rotating column to rotate. A mounting hole for the rotating column to be independently inserted is opened on the fixed plate 4. One end of the rotating column independently passes through the mounting hole and is connected to a ratchet 9. The front end of the rotating column passes through the mounting hole and is connected to the center hole of the ratchet 9. A pawl 8 limited to clockwise rotation of the ratchet 9 is provided on the second clamping arm 2; the pawl 8 is hinged to the second clamping arm 2 through the first hinge column, and a fixed block 7 is fixed to the second clamping arm 2. A spring sheet 6 is provided between the fixed block 7 and the pawl 8 to push the pawl 8 to engage with the ratchet 9. One end of the spring sheet 6 is fixed on the fixed block 7, and the other end thereof rests on the pawl 8; the spring sheet 6 is an elastic component. In addition, a spring can also be used to replace the position of the spring sheet 6 to perform the same function as the spring sheet 6.
[0027] like Figure 5 As shown, the hinged end of the pawl 8 is fixed with a lever 5; the lever 5 and the pawl 8 are integrally formed, and the lever end of the lever 5 is located outside the second clamping arm 2; the lever 5 is an arc-shaped structure bent toward the second finger ring, and when in use, the locking of the pawl 8 on the ratchet 9 can be released by moving the lever 5; the lever 5 with an arc-shaped structure has good anti-slip ability. During the operation, the doctor may need to unlock the locked operation through a narrow space, so the lever 5 passes through one side of the second clamping arm 2, so that the locking of the ratchet 9 can be released more conveniently through the lever 5.
[0028] During actual use: when the first clamping arm 1 and the second clamping arm 2 are brought closer together under the operation of the doctor, the first jaw and the second jaw clamp the bone. During the process of the first clamping arm 1 and the second clamping arm 2 approaching each other, the locking rack 3 swings toward one side of its inner arc and slides to the right between the gear 10 and the second clamping arm 2. During this process, since the locking rack 3 is meshed with the gear 10, the gear 10 rotates clockwise and drives the ratchet 9 to rotate clockwise, and the ratchet 8 does not hinder the ratchet 9 from rotating clockwise. When the first jaw and the second jaw are clamped on the bone, the locking rack 3 cannot slide to the left due to the cooperation of the ratchet 8 and the ratchet 9, and the ratchet 8 does not hinder the ratchet 9 from rotating clockwise. The first clamping arm 1 and the second clamping arm 2 cannot swing, so the first clamping arm 1 and the second clamping arm 2 are locked and cannot be opened. The first clamping claw and the second clamping claw continue to clamp the patient's bones. When the clamping needs to be released, the lever 5 is pushed to make the pawl 8 release the restriction on the ratchet 9. At this time, the gear 10 can rotate counterclockwise, and the locking rack 3 is no longer restricted. In this way, the first clamping arm 1 and the second clamping arm 2 can be opened. In this process, the locking rack 3 slides to the left and swings to one side of the outer arc at the same time, so that the first clamping arm 1 and the second clamping arm 2 can be locked and unlocked. In this embodiment, the locking rack 3 is stored between the first clamping arm 1 and the second clamping arm 2. When working, the locking rack 3 does not extend from one side of the first clamping arm 1 or the second clamping arm 2 due to the need for locking work, and occupies the space outside the first clamping arm 1 or the second clamping arm 2, resulting in the doctor's line of sight being blocked.
Claims
1. A bone clamp, comprising a first clamping arm (1) and a second clamping arm (2), wherein the first clamping arm (1) and the second clamping arm (2) are hinged to each other and swing up and down, characterized in that: The inner wall of the first clamping arm (1) is hinged with a locking rack (3) that swings up and down, and the inner wall of the second clamping arm (2) is fixed with two fixed plates (4) distributed front and back, and a freely rotating gear (10) is arranged between the two fixed plates (4), and the movable end of the locking rack (3) passes through between the gear (10) and the inner wall of the second clamping arm (2) and meshes with the gear (10); the locking rack (3) is an arc-shaped structure, and the gear (10) is located on the inner arc of the locking rack (3); a rotating column is fixed at the center of the gear (10), and a mounting hole for the rotating column to be independently inserted is opened on the fixed plate (4), and one end of the rotating column is independently connected to the mounting hole with a ratchet (9), and a ratchet pawl (8) that is limited to the clockwise rotation of the ratchet (9) is arranged on the second clamping arm (2).
2. The bone holding forceps according to claim 1, characterized in that: The ratchet pawl (8) is hinged on the second clamping arm (2) via a first hinge column, and the second clamping arm (2) is provided with an elastic component for pushing the ratchet pawl (8) to engage with the ratchet wheel (9).
3. The bone holding forceps according to claim 2, characterized in that: The elastic component comprises a spring sheet (6). A fixing block (7) is fixed on the second clamping arm (2). One end of the spring sheet (6) is fixed on the fixing block (7), and the other end thereof abuts against a ratchet pawl (8).
4. The bone holding forceps according to claim 1, characterized in that: A lever (5) is fixed to the hinged end of the ratchet pawl (8).
5. The bone holding forceps according to claim 4, characterized in that: The lever (5) and the pawl (8) are integrally formed.
6. The bone holding forceps according to claim 4, characterized in that: The shifting end of the shifting rod (5) is located outside the second clamping arm (2).
7. The bone holding forceps according to claim 1, characterized in that: An articulated seat is fixed on the inner side wall of the first clamping arm (1), and the articulated end of the locking rack (3) is connected to the articulated seat via a second articulated column.