Spinous process puncher

Abstract

The utility model discloses a spinous process puncher, and relates to the field of medical instruments, the spinous process puncher comprises two forceps handles, two parallel clamping arms are arranged on the two forceps handles, limiting blocks are rotatably arranged in the forceps handles, one ends of the clamping arms are rotatably arranged on the forceps handles, the other ends of the clamping arms penetrate through the limiting blocks in a sliding mode, and a first forceps head and a second forceps head are arranged on the two clamping arms respectively. The two clamp arms are utilized, the clamp handles are held by hands and proper force is applied, the two clamp arms are driven to move in the rotating process of the two clamp handles, one ends of the clamp arms rotate on the clamp handles, the other ends of the clamp arms slide in the limiting blocks, and the limiting blocks rotate in the clamp handles at the same time, so that the two clamp arms are always parallel to each other in the moving process; the first clamp head and the second clamp head movably abut against the two sides of the spinous process, pressure is applied to the clamp handles, the clamp handles are rotated, the clamp handles drive the first clamp head and the second clamp head to apply pressure to the spinous process through the clamping arms, and therefore a straight fixing hole can be punched in the spinous process, and punching of the fixing hole is completed under the condition that few spinous processes are damaged.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a spinous process puncher. Background Art

[0002] The function of the spinous process puncher is to punch holes in the spinous processes on the spine. Its structural shape is in the form of a clamp, and its working mode is mostly clamping and pressure-type punching. By clamping and applying force to the spinous process, the sharp part of the front end of the puncher pierces the spinous process to form a through fixed hole.

[0003] At present, the existing clamping and pressurizing spinous process puncher is a simple two-handle cross-pressing and rotating pressurizing puncher, so the hole punched on the spinous process is not a straight cylindrical hole, but an arc hole with a certain curvature. Therefore, it is necessary to punch a fixed hole with a diameter larger than the diameter of the cross-link rod on the spinous process so that the cross-link rod can pass through the fixed hole. This will increase the damage to the spinous process and reduce the integrity of the spinous process, which is easy to affect the operation. Utility Model Content

[0004] In order to improve the problem of destroying more spinous processes when punching a fixation hole, the present application provides a spinous process puncher.

[0005] The spinous process punch provided in this application adopts the following technical solution:

[0006] A spinous process puncher comprises two hinged clamp handles, wherein two clamp arms parallel to each other are symmetrically arranged on both sides of the two clamp handles at the hinge, and a limit block is rotatably arranged inside the clamp handles. One end of the clamp arm is rotatably arranged on one clamp handle, and the other end slides through the limit block of the other clamp handle, and the ends of the two clamp arms are respectively provided with a first clamp head and a second clamp head.

[0007] By adopting the above technical solution, when drilling the spinous process, the pliers handle is held and appropriate force is applied. The two pliers handles drive the two clamp arms to move during rotation. One end of the clamp arm rotates on the pliers handle and the other end slides in the limit block. The limit block rotates in the pliers handle at the same time, so that the two clamp arms are always parallel to each other during movement. The first pliers head and the second pliers head move to abut on both sides of the spinous process, apply pressure to the pliers handle and rotate the pliers handle. The pliers handle drives the first pliers head and the second pliers head to apply pressure on the spinous process through the clamp arms, so that a straight fixing hole can be drilled in the spinous process, and the fixing hole is drilled with less damage to the spinous process.

[0008] Preferably, the first clamp head is fixedly arranged on one clamp arm, and the second clamp head is detachably arranged on the other clamp arm.

[0009] By adopting the above technical solution, the second clamp head on the clamp arm is disassembled and replaced with a second clamp head of different diameters, so that fixing holes of different diameters can be opened, which is suitable for horizontal connecting rods of different diameters.

[0010] Preferably, a positioning block is provided at one end of the second pliers head away from the first pliers head, a positioning groove is provided on the clamp arm, the positioning block is arranged in the positioning groove, and a locking ring is provided on the side of the clamp arm located away from the second pliers head, and the locking ring is threadedly fixedly connected to the second pliers head.

[0011] By adopting the above technical solution, when disassembling the second pliers, the locking ring is rotated. After the locking ring is separated from the second pliers, the second pliers can be removed from the clamp arm. When installing the second pliers, the positioning block is placed in the positioning groove, and then the locking ring is rotated to connect the second pliers, and the second pliers can be installed on the clamp arm.

[0012] Preferably, a chip storage groove is provided at the end of the first pliers head and the end of the second pliers head that are close to each other.

[0013] By adopting the above technical solution, the chip storage groove can store bone chips generated during the piercing and drilling process, thereby facilitating the recovery of bone chips.

[0014] Preferably, spring sheets are provided on the sides of the two clamp handles that are close to each other, and the ends of the two spring sheets are connected to each other.

[0015] By adopting the above technical solution, the resilience between the two spring sheets can make the clamp handle in a free state open to a certain angle, thereby facilitating the punching operation.

[0016] Preferably, a connecting groove is formed at one end of one of the spring pieces away from the clamp handle, and an end of the other spring piece away from the clamp handle is located in the connecting groove.

[0017] By adopting the above technical solution, the two spring sheets are connected through the connecting groove, so that the ends of the two spring sheets are not easy to separate.

[0018] Preferably, a rack is provided at the end of one of the clamp handles away from the clamp arm, and a latching tooth is provided at the end of the other clamp handle away from the clamp arm. When the two clamp handles are rotated to open, the latching tooth is latched and fixed on the rack.

[0019] By adopting the above technical solution, during the punching process, the clamping teeth are clamped and fixed on the rack and the clamp handle is locked, so that the clamp handle can only be rotated and locked but cannot be rotated to open, thereby facilitating the first clamp head and the second clamp head to punch holes.

[0020] Preferably, a plurality of anti-slip grooves are formed on the side walls of the two clamp handles that are away from each other and located on the side away from the clamp arm.

[0021] By adopting the above technical solution, the anti-skid groove can play an anti-skid role during the punching process, thereby making it easier for the user to hold the pliers handle tightly.

[0022] Preferably, the ends of the first clamp head and the second clamp head close to each other are both formed with serrations.

[0023] By adopting the above technical solution, when biting a hard spinous process, the pliers handle is rotated back and forth, and the saw teeth at the ends of the first pliers head and the second pliers head are rotated back and forth, so that the spinous process can be sawed, making drilling more labor-saving. When biting an osteoporotic spinous process, the pressure of the pliers handle is reduced, the saw teeth are rotated back and forth and the spinous process is sawed, so that the channel of the spinous process fixing hole can be ensured to be intact, so that the spinous process is not easily deformed, fractured or even fallen off due to compression.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. When punching the spinous process with two clamp arms, hold the clamp handle and apply appropriate force. The two clamp arms are driven to move during the rotation of the two clamp handles. One end of the clamp arm rotates on the clamp handle, and the other end slides in the limit block. The limit block rotates in the clamp handle at the same time, so that the two clamp arms are always parallel to each other during the movement. The first clamp head and the second clamp head move to abut on both sides of the spinous process. Apply pressure to the clamp handle and rotate the clamp handle. The clamp handle drives the first clamp head and the second clamp head to apply pressure to the spinous process through the clamp arms, so that a straight fixing hole can be punched on the spinous process. The fixing hole is punched with less damage to the spinous process.

[0026] 2. With the help of the detachable second clamp head, the second clamp head on the clamp arm is removed and replaced with a second clamp head of different diameters, so that fixing holes of different diameters can be opened, which is suitable for horizontal connecting rods of different diameters;

[0027] 3. By adopting the chip storage groove, the chip storage groove can store the bone chips generated during the piercing and drilling process, thereby facilitating the recovery of the bone chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of the spinous process puncher of the present application;

[0029] Figure 2 An exploded view of part of the structure of the spinous process punch of this application;

[0030] Figure 3 The spinous process punch of this application is an exploded view of part of the structure to highlight the limit block;

[0031] Figure 4 For this application Figure 1 The enlarged schematic diagram at A in the middle;

[0032] Figure 5The spinous process punch for this application is a partial structural cross-sectional view highlighting the locking teeth.

[0033] Figure numerals: 1. Clamp handle; 2. Clamp arm; 3. Limit block; 4. First clamp head; 5. Second clamp head; 6. Positioning block; 7. Positioning groove; 8. Locking ring; 9. Chip storage groove; 10. Spring piece; 11. Connecting groove; 12. Rack; 13. Clamping tooth; 14. Anti-slip groove; 15. Limit groove; 16. Limit bolt; 17. Disassembly groove; 18. Avoidance groove; 19. First nut; 20. First bolt; 21. Second nut; 22. Second bolt. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0035] The embodiment of the present application discloses a spinous process puncher.

[0036] Reference Figure 1 and Figure 2 A spinous process puncher includes two clamp handles 1, which are hingedly installed by a first bolt 20 and a first nut 19. The first nut 19 passes through the two clamp handles 1 and serves as a rotation axis of the two clamp handles 1. The first bolt 20 is threadedly fixed in the end of the first nut 19 and fixes the first nut 19. The ends of the two clamp handles 1 are hingedly installed with clamp arms 2 by a second nut 21 and a second bolt 22. The two clamp arms 2 are parallel to each other. The second nut 21 passes through the clamp handle 1 and the clamp arm 2 and serves as a rotation axis of the clamp arm 2. The second bolt 22 is threadedly fixed in the end of the second nut 21 and fixes the second nut 21.

[0037] Reference Figure 2 and Figure 3 The first clamp head 4 and the second clamp head 5 are respectively installed on the side walls close to each other and away from the end of the two clamp arms 2 of the clamp handle 1. The ends of the first clamp head 4 and the second clamp head 5 close to each other are serrated, and the ends of the two clamp arms 2 away from the first clamp head 4 and the second clamp head 5 are cylindrical. A limit block 3 is rotatably installed in each clamp handle 1 on the side of the first nut 19 away from the clamp arm 2, and the cylindrical end of the clamp arm 2 on one clamp handle 1 slides through the limit block 3 in the other clamp handle 1. Limiting grooves 15 are provided on the upper and lower end surfaces of the limit block 3, and limiting bolts 16 are threadedly installed on the upper and lower sides of each clamp handle 1 located on the limit block 3. The end of the limit bolt 16 is located in the limit groove 15 and limits the limit block 3.

[0038] The two clamp handles 1 can drive the two clamp arms 2 to move when rotating. One end of the clamp arm 2 rotates on the clamp handle 1, and the cylindrical end of the clamp arm 2 slides in the limit block 3, and the limit block 3 rotates in the clamp handle 1, so that the two clamp arms 2 are always parallel to each other during the movement.

[0039] When drilling the spinous process, open the two pliers handles 1, move the first pliers head 4 and the second pliers head 5 to both sides of the spinous process, apply pressure to the two pliers handles 1 and rotate the pliers handles 1, the two pliers handles 1 drive the two clamp arms 2 to move toward each other, and the two clamp arms 2 drive the first pliers head 4 and the second pliers head 5 to move toward each other, so that a straight fixing hole can be drilled on the spinous process, and the fixing hole is drilled with less damage to the spinous process.

[0040] During the drilling process, after the saw teeth at the ends of the first pliers 4 and the second pliers 5 are embedded in the spinous process, the pliers handle 1 is reciprocated with the axis of the first pliers 4 and the second pliers 5 as the rotation axis. When biting the hard spinous process, the pressure of the pliers handle 1 is increased, the pliers handle 1 is reciprocated, and the saw teeth at the ends of the first pliers 4 and the second pliers 5 are reciprocated, so that the spinous process can be sawed, making the drilling more labor-saving. When biting the osteoporotic spinous process, the pressure of the pliers handle 1 is reduced, the pliers handle 1 is reciprocated, and the saw teeth reciprocate and saw the spinous process, which can ensure the integrity of the spinous process fixing hole, so that the spinous process is not easily deformed, fractured, or even detached by compression.

[0041] Reference Figure 3 The first clamp head 4 is fixedly mounted on one clamp arm 2, and the second clamp head 5 is detachably fixedly mounted on the other clamp arm 2. An outer wall of the end of the second clamp head 5 away from the first clamp head 4 is formed with an external thread, and a locking ring 8 is installed on the side of the clamp arm 2 away from the second clamp head 5. The locking ring 8 extends into the clamp arm 2 and is threadedly sleeved on the external thread of the second clamp head 5. A hexagonal positioning block 6 is fixedly mounted on one end of the outer wall of the second clamp head 5 away from the first clamp head 4, and a hexagonal positioning groove 7 is formed on the side wall of the clamp arm 2 close to the second clamp head 5, and the positioning block 6 is located in the positioning groove 7.

[0042] The second clamp head 5 on the clamp arm 2 can be disassembled by rotating the locking ring 8, and the second clamp head 5 of different diameters can be replaced, so that fixing holes of different diameters can be opened, which is suitable for horizontal connecting rods of different diameters. When installing the second clamp head 5, the positioning block 6 is placed in the positioning groove 7, and the locking ring 8 is rotated to connect the second clamp head 5, so that the second clamp head 5 can be installed on the clamp arm 2.

[0043] The ends of the first pliers 4 and the second pliers 5 close to each other are both provided with a chip storage groove 9. When the spinous process is punched, the bone chips generated by the punching will be squeezed into and stored in the chip storage groove 9. After the punching is completed, the chip storage groove 9 can take out the bone chips, so as to facilitate the recovery and cleaning of the bone chips.

[0044] Reference Figure 1The two clamp handles 1 are fixed with springs 10 on the side walls close to each other at one end away from the clamp arm 2 by bolts. The middle of the two springs 10 are bent, and the ends of the two springs 10 are connected to each other. The rebound force between the two springs 10 can make the clamp handles 1 in the free state open to a certain angle, so as to facilitate the punching operation.

[0045] Reference Figure 4 The end of the first spring piece 10 is provided with a connection groove 11, and the end wall of the spring piece 10 is provided with a disassembly groove 17 connected with the connection groove 11, and the end of the second spring piece 10 is provided with avoidance grooves 18 on both sides of the width direction. The end of the second spring piece 10 can be installed into the connection groove 11 through the disassembly groove 17, and the two avoidance grooves 18 on the second spring piece 10 avoid the first spring piece 10, so that the ends of the two spring pieces 10 are connected to each other.

[0046] Reference Figure 1 and Figure 5 The end of one pliers handle 1 away from the clamp arm 2 is integrally formed with a latch tooth 13, and the end of the other pliers handle 1 away from the clamp arm 2 is installed with a rack 12 through a pin, and the end of the latch tooth 13 abuts against the rack 12. When the rack 12 is moved to separate the rack 12 from the latch tooth 13, the two pliers handles 1 can rotate freely; when the rack 12 is moved to contact the rack 13, the two pliers handles 1 will be locked when they are turned to open. At this time, the two pliers handles 1 can only be rotated and compressed, so that the first pliers head 4 and the second pliers head 5 can punch holes.

[0047] Reference Figure 1 The two clamp handles 1 are provided with a plurality of anti-skid grooves 14 on the side walls away from each other at one end of the clamp arm 2. When the clamp handles 1 are rotated back and forth to punch holes, the anti-skid grooves 14 can play an anti-skid role, so that the user can hold the clamp handles 1 tightly.

[0048] The implementation principle of the spinous process puncher of the embodiment of the present application is as follows: select the second pliers 5 of appropriate specifications according to the size of the horizontal connecting rod, lift the rack 12, the spring 10 pushes the pliers handle 1 to open, and the second pliers 5 is installed on the clamp arm 2 using the locking ring 8. Adjust the jaws of the puncher to a suitable position according to the size of the spur, pull back the rack 12, apply pressure to the two pliers handles 1 and rotate the pliers handles 1, and the pliers handles 1 drive the first pliers 4 and the second pliers 5 to apply pressure to the spinous process through the clamp arm 2, so that a straight fixing hole can be punched on the spinous process, and the fixing hole is punched with less damage to the spinous process.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spinous process punch, comprising two hinged clamp handles (1), characterized in that: Two clamp arms (2) parallel to each other are symmetrically arranged on both sides of the two clamp handles (1) at the hinged joint, a limit block (3) is rotatably arranged inside the clamp handles (1), one end of the clamp arm (2) is rotatably arranged on one clamp handle (1), and the other end slides through the limit block (3) of the other clamp handle (1), and the ends of the two clamp arms (2) are respectively provided with a first clamp head (4) and a second clamp head (5).

2. A spinous process puncher according to claim 1, characterized in that: The first clamp head (4) is fixedly arranged on one clamp arm (2), and the second clamp head (5) is detachably arranged on the other clamp arm (2).

3. A spinous process puncher according to claim 2, characterized in that: A positioning block (6) is provided at one end of the second clamp head (5) away from the first clamp head (4); a positioning groove (7) is provided on the clamp arm (2); the positioning block (6) is arranged in the positioning groove (7); a locking ring (8) is provided on the side of the clamp arm (2) away from the second clamp head (5) where the positioning block (6) is located; the locking ring (8) is threadedly fixedly connected to the second clamp head (5).

4. A spinous process puncher according to claim 1, characterized in that: A chip storage groove (9) is provided at the ends of the first clamp head (4) and the second clamp head (5) that are close to each other.

5. The spinous process puncher according to claim 1, characterized in that: A spring sheet (10) is provided on one side of the two clamp handles (1) that are close to each other, and the ends of the two spring sheets (10) are connected to each other.

6. A spinous process puncher according to claim 5, characterized in that: A connection groove (11) is formed at one end of one of the spring pieces (10) away from the clamp handle (1), and an end of the other spring piece (10) away from the clamp handle (1) is located in the connection groove (11).

7. The spinous process puncher according to claim 1, characterized in that: A rack (12) is provided at the end of one of the clamp handles (1) away from the clamp arm (2), and a latching tooth (13) is provided at the end of the other clamp handle (1) away from the clamp arm (2). When the two clamp handles (1) are rotated to open, the latching tooth (13) is latched and fixed on the rack (12).

8. The spinous process puncher according to claim 1, characterized in that: A plurality of anti-slip grooves (14) are formed on the side walls of the two clamp handles (1) that are away from each other and located on the side away from the clamp arm (2).

9. The spinous process puncher according to claim 1, characterized in that: The ends of the first clamp head (4) and the second clamp head (5) close to each other are both formed with saw teeth.

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