Vertebral plate rongeur for minimally invasive spine surgery

Abstract

The utility model discloses a vertebral plate rongeur for minimally invasive spine surgery. The vertebral plate rongeur comprises a rongeur body and a fixed rongeur plate fixedly installed at the left end of the rongeur body. A fixed grasping plate is fixedly arranged below the right end of the rongeur body, and a containing cavity is formed in the rongeur body; the rongeur further comprises a movable rongeur mechanism arranged on the top face of the rongeur body, the movable rongeur mechanism comprises a movable rongeur plate, and a driving guide groove is formed in the right side of the interior of the movable rongeur plate. Wherein a guide sliding groove is formed in the fixed nipper, and a fixed nipper blade is fixedly arranged at the left end of the fixed nipper; and a movable nipper blade is fixedly arranged at the left end of the movable nipper plate. According to the vertebral plate rongeur for the minimally invasive spine surgery, the detachable movable rongeur plate is locked and limited through the abutting transverse strips and the anti-disengaging sleeve plates which are symmetrically distributed on the rongeur body, so that the movable rongeur plate is driven by the overturning movable grabbing plate to enable the movable rongeur blade to be engaged with the fixed rongeur blade, and then a vertebral plate is trimmed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a vertebral plate bone-binding forceps for minimally invasive spine surgery. Background Art

[0002] Rongeur refers to a surgical instrument used to bite dead bone or trim bone stumps during spinal surgery. Its structure is similar to that of scissors. It can shear dead bone and bad bone through the engagement between the fixed and movable blades, and is not prone to dislocation, deflection, bone residue impaction, etc.

[0003] Announcement No. CN219940719U discloses a vertebral plate bone rongeur. By pulling the pull rod, the pull rod drives the movable plate to slide along the fixed frame, the movable plate drives the second spring to compress and store force, the movable plate drives the clamping teeth at the bottom of the positioning block to disengage from the gear, by loosening the pull rod, the second spring resets the movable plate downward, the movable plate drives the clamping teeth at the bottom of the positioning block to cooperate with the gear, thereby preventing the gear from rotating, maintaining the bone biting state, avoiding continuous pinching to make the operator's hands sore, and saving physical strength;

[0004] However, the above-mentioned bone-cutting forceps for vertebral lamina still have the following problems during actual use: although the effect of trimming the vertebral lamina is achieved through the engagement between the fixed forceps blade and the movable forceps blade, as a surgical instrument that needs to shear vertebral lamina with excessive hardness, the movable forceps blade is too worn and difficult to separate and disassemble during replacement. The entire bone-cutting forceps has to be replaced, and it is also not convenient to disassemble and disinfect and clean after use.

[0005] Therefore, we propose a vertebral plate bone rongeur for minimally invasive spine surgery to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a vertebral lamina rongeur for minimally invasive spinal surgery, so as to solve the problem raised in the above-mentioned background technology that although the effect of trimming the vertebral lamina is currently achieved by the engagement between the fixed forceps blade and the movable forceps blade, as a surgical instrument that needs to shear vertebral lamina with excessive hardness, the movable forceps blade is excessively worn and difficult to separate and disassemble during replacement. The rongeur has to be replaced as a whole, and it is also inconvenient to disassemble and disinfect and clean after use.

[0007] To achieve the above object, the utility model provides the following technical solutions: a vertebral plate rongeur for minimally invasive spine surgery, comprising a rongeur body, and a fixed pliers plate fixedly mounted on the left end of the rongeur body;

[0008] A fixed gripping plate is fixedly arranged below the right end of the rongeur body, and a receiving cavity is provided inside the rongeur body;

[0009] The invention also comprises: a movable jaw mechanism is arranged on the top surface of the rongeur body, and the movable jaw mechanism comprises a movable jaw plate, and a driving guide groove is arranged on the right side of the movable jaw plate;

[0010] A guide slot is provided inside the fixed clamp plate, and a fixed clamp blade is fixedly provided at the left end of the fixed clamp plate;

[0011] Wherein, a movable pliers blade is fixedly arranged on the left end of the movable pliers plate.

[0012] Preferably, a driving shaft is rotatably arranged in the accommodating cavity inside the bone-holding forceps body through a bearing, and the outer wall of the driving shaft inside the accommodating cavity is fixedly connected to the middle part of the dynamic gripping plate, and the dynamic gripping plate and the inner wall of the accommodating cavity are connected to each other through a reset spring.

[0013] Preferably, the left end of the fixed clamp plate is fixedly provided with abutment side plates on both front and rear sides, and the inner sides of the front and rear abutment side plates are provided with abutment cross bars, and the front and rear abutment cross bars and the abutment side plates are connected to each other through limit springs.

[0014] Preferably, the movable pliers mechanism includes a locking rotating block, and the locking rotating block is fixedly mounted on the middle part of the bottom surface of the movable pliers plate, and the locking rotating block passes through the outside of the bottom end of the guide groove inside the fixed pliers plate, and the locking rotating block is limited by the interference bars on the front and rear sides of the fixed pliers plate.

[0015] Preferably, the movable pliers mechanism comprises a movable pliers plate which is slidably arranged on the top surface of the fixed pliers plate, and the internal sliding of the driving guide groove on the right side of the fixed pliers plate is in contact with the top of the dynamic gripping plate, and the movable pliers plate is driven to slide to the left by flipping the dynamic gripping plate, and the movable pliers plate is limited by a locking rotating block which is slidably arranged inside the guide groove.

[0016] Preferably, the front and rear sides of the left end of the fixed pliers plate are fixedly connected to the bottom end of the anti-detachment sleeve, and the anti-detachment sleeves on the front and rear sides are sleeved and connected to the outer wall of the movable pliers plate, and the anti-detachment sleeves on the front and rear sides are used to limit and guide the sliding movable pliers plate.

[0017] Preferably, the transverse center axis of the fixed pliers plate and the transverse center axis of the movable pliers plate are parallel to each other, and the movable pliers blade at the left end of the movable pliers plate and the fixed pliers blade at the left end of the fixed pliers plate perform bone cutting operations after being fitted together.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the vertebral plate rongeur for minimally invasive spine surgery locks and limits the detachable movable jaw plate through the symmetrically distributed abutment bars and the anti-drop sleeve plate of the rongeur body, so that the movable jaw plate is driven by the flipped movable grasping plate to make the movable jaw blade bite into the fixed jaw blade, thereby trimming the vertebral plate. The specific contents are as follows:

[0019] 1. The movable pliers are connected to the guide groove inside the fixed pliers through the locking rotating block on the bottom surface, and the rotation of the locking rotating block is limited by the resisting horizontal bars inside the resisting side plates on the front and rear sides, thereby achieving the effect of quick disassembly and replacement;

[0020] 2. Manually grasp the fixed grasping plate and the dynamic grasping plate at the bottom of the rongeur body, hold the fixed grasping plate with the thumb, grasp the dynamic grasping plate with the index finger and flip it backward, so that the top of the dynamic grasping plate touches the dynamic grasping plate and then slides to the left, so that the vertebral plate can be trimmed after the dynamic forceps blade bites into the fixed forceps blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0023] Figure 3 This is a schematic diagram of the structure of the dynamic grab plate of the utility model after flipping;

[0024] Figure 4 This is a schematic diagram of the structure of the installation of the dynamic grab plate of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the movable clamp plate of the utility model;

[0026] Figure 6 It is a schematic diagram of the structure of the locking rotating block and the interference horizontal bar connected to the utility model.

[0027] In the figure: 1. Bone-holding forceps body; 2. Fixed jaw plate; 3. Fixed gripping plate; 4. Accommodating cavity; 5. Moving jaw plate; 6. Driving guide groove; 7. Guide slide groove; 8. Fixed jaw blade; 9. Moving jaw blade; 10. Driving shaft; 11. Moving gripping plate; 12. Return spring; 13. Resistance side plate; 14. Resistance horizontal bar; 15. Limit spring; 16. Locking rotating block; 17. Anti-drop sleeve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0030] Embodiment 1: In order to solve the problem that the existing rongeurs cannot be disassembled and separated, the present embodiment adopts the following technical solution: the movable jaw plate 5 is connected to the guide slot 7 inside the fixed jaw plate 2 through the locking rotating block 16 on the bottom surface, and the rotation of the locking rotating block 16 is limited by the resisting horizontal bars 14 inside the resisting side plates 13 on the front and rear sides, thereby achieving the effect of rapid disassembly and replacement;

[0031] A vertebral plate rongeur for minimally invasive spine surgery comprises a rongeur body 1 and a fixed jaw plate 2 fixedly mounted on the left end of the rongeur body 1; a fixed gripping plate 3 is fixedly arranged below the right end of the rongeur body 1;

[0032] The top surface of the rongeur body 1 is provided with a movable jaw mechanism, and the movable jaw mechanism includes a movable jaw plate 5, and a driving guide groove 6 is opened on the right side of the movable jaw plate 5;

[0033] The fixed jaw plate 2 is provided with a guide slot 7 inside, and a fixed jaw blade 8 is fixedly provided at the left end of the fixed jaw plate 2; the movable jaw blade 9 is fixedly provided at the left end of the movable jaw plate 5; the left end of the fixed jaw plate 2 is provided with a contact side plate 13 fixedly provided at both the front and rear sides, and the inner sides of the contact side plates 13 at both the front and rear sides are provided with a contact horizontal bar 14, and the contact horizontal bars 14 at both the front and rear sides are connected to the contact side plates 13 through a limit spring 15;

[0034] The movable jaw mechanism includes a locking rotating block 16, and the locking rotating block 16 is fixedly installed in the middle of the bottom surface of the movable jaw plate 5, and the locking rotating block 16 penetrates the bottom end of the guide slot 7 inside the fixed jaw plate 2, and the locking rotating block 16 is limited by the abutting horizontal bars 14 on the front and rear sides of the fixed jaw plate 2;

[0035] The front and rear sides of the left end of the fixed pliers plate 2 are fixedly connected to the bottom end of the anti-dropout sleeve 17, and the anti-dropout sleeves 17 on the front and rear sides are sleeved and connected to the outer wall of the movable pliers plate 5, and the anti-dropout sleeves 17 on the front and rear sides are used to limit and guide the sliding movable pliers plate 5;

[0036] like Figure 4-Figure 6As shown, when the movable jaw plate 5 needs to be installed with the fixed jaw plate 2 at the left end of the bone-holding forceps body 1, the movable jaw plate 5 is manually placed on the upper surface of the fixed jaw plate 2, so that the movable jaw plate 5 is inserted into the anti-slip sleeve 17 on the front and rear sides of the bone-holding forceps body 1, and then the anti-slip sleeve 17 limits the movable jaw plate 5, and at the same time, the locking rotating block 16 on the bottom surface of the movable jaw plate 5 passes through the guide groove 7 inside the fixed jaw plate 2, and then the locking rotating block 16 set on the bottom surface of the movable jaw plate 5 is manually rotated, so that the locking rotating block 16 is in contact with the inner walls of the resisting cross bar 14 inside the resisting side plates 13 on the front and rear sides, and the resisting cross bar 14 connected by the limit spring 15 is always in contact with the outer wall of the locking rotating block 16, so that the movable jaw plate 5 can be stably installed on the top surface of the fixed jaw plate 2 to prevent the movable jaw plate 5 from being dislocated during the sliding process.

[0037] Embodiment 2: In order to solve the problem of unstable bite during operation of the existing rongeurs, the present embodiment adopts the following technical scheme, by manually grasping the fixed gripping plate 3 and the dynamic gripping plate 11 at the bottom end of the rongeurs body 1, so that the thumb tightly grasps the fixed gripping plate 3, and the index finger partially grasps the dynamic gripping plate 11 and flips it backward, so that the top end of the dynamic gripping plate 11 touches the dynamic jaw plate 5 and then slides to the left, so that the vertebral plate can be trimmed after the dynamic jaw blade 9 bites the fixed jaw blade 8;

[0038] An accommodating cavity 4 is provided inside the rongeur body 1; a driving shaft 10 is rotatably provided in the accommodating cavity 4 inside the rongeur body 1 through a bearing, and the outer wall of the driving shaft 10 inside the accommodating cavity 4 is fixedly connected to the middle part of a dynamic gripping plate 11, and the dynamic gripping plate 11 and the inner wall of the accommodating cavity 4 are connected to each other through a return spring 12;

[0039] The movable jaw plate 5 included in the movable jaw mechanism is slidably arranged on the top surface of the fixed jaw plate 2, and the inner sliding of the driving guide groove 6 on the right side of the fixed jaw plate 2 is against the top of the dynamic gripping plate 11, and the dynamic gripping plate 11 is turned over to drive the movable jaw plate 5 to slide to the left, and the movable jaw plate 5 is limited by the locking rotating block 16 slidably arranged inside the guide groove 7;

[0040] The transverse central axis of the fixed jaw plate 2 and the transverse central axis of the movable jaw plate 5 are parallel to each other, and the movable jaw blade 9 at the left end of the movable jaw plate 5 and the fixed jaw blade 8 at the left end of the fixed jaw plate 2 are fitted together to perform bone cutting operation;

[0041] like Figure 2-Figure 4As shown, the fixed gripping plate 3 and the dynamic gripping plate 11 at the bottom end of the bone-holding forceps body 1 are manually grasped, so that the thumb tightly grasps the fixed gripping plate 3, and the index finger partially grasps the dynamic gripping plate 11 and flips it backward, so that the dynamic gripping plate 11 is limited by the driving shaft 10 inside the accommodating cavity 4, and the top end of the dynamic gripping plate 11 is flipped to the left side, and then the dynamic jaw plate 5 is driven to slide to the left side inside the driving guide groove 6, so that the fixed jaw blade 8 at the left end of the dynamic jaw plate 5 and the dynamic jaw blade 9 at the left end of the fixed jaw plate 2 are engaged with each other, so as to trim the necrotic vertebral plate.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertebral plate rongeur for minimally invasive spinal surgery, comprising a rongeur body (1), and a fixed tongs plate (2) fixedly mounted on the left end of the rongeur body (1); A fixed gripping plate (3) is fixedly arranged below the right end of the rongeur body (1), and a receiving cavity (4) is provided inside the rongeur body (1); It is characterized in that Also includes: The top surface of the rongeur body (1) is provided with a movable jaw mechanism, and the movable jaw mechanism includes a movable jaw plate (5), and a driving guide groove (6) is provided on the right side of the movable jaw plate (5); A guide slot (7) is provided inside the fixed clamp plate (2), and a fixed clamp blade (8) is fixedly provided at the left end of the fixed clamp plate (2); A movable jaw blade (9) is fixedly arranged at the left end of the movable jaw plate (5).

2. The vertebral plate rongeur for minimally invasive spine surgery according to claim 1, characterized in that: A driving shaft (10) is rotatably arranged in the accommodating cavity (4) inside the rongeur body (1) via a bearing, and the outer wall of the driving shaft (10) inside the accommodating cavity (4) is fixedly connected to the middle part of the dynamic gripping plate (11), and the dynamic gripping plate (11) and the inner wall of the accommodating cavity (4) are connected to each other via a reset spring (12).

3. The vertebral plate rongeur for minimally invasive spine surgery according to claim 1, characterized in that: The left end of the fixed clamp plate (2) is fixedly provided with a contact side plate (13) on both the front and rear sides, and the inner sides of the contact side plates (13) on both the front and rear sides are provided with a contact horizontal bar (14), and the contact horizontal bars (14) on both the front and rear sides are connected to the contact side plates (13) via a limit spring (15).

4. The vertebral plate rongeur for minimally invasive spine surgery according to claim 1, characterized in that: The movable jaw mechanism comprises a locking rotating block (16), and the locking rotating block (16) is fixedly mounted on the middle part of the bottom surface of the movable jaw plate (5), and the locking rotating block (16) is penetrated through the outside of the bottom end of the guide groove (7) inside the fixed jaw plate (2), and the locking rotating block (16) is limited by the abutting horizontal bars (14) on the front and rear sides of the fixed jaw plate (2).

5. The vertebral plate rongeur for minimally invasive spine surgery according to claim 4, characterized in that: The movable jaw mechanism comprises a movable jaw plate (5) which is slidably arranged on the top surface of the fixed jaw plate (2), and the internal sliding of the right driving guide groove (6) of the fixed jaw plate (2) is in contact with the top of the movable gripping plate (11), and the movable jaw plate (5) is driven to slide to the left by the flipping of the movable gripping plate (11), and the movable jaw plate (5) is limited by a locking rotating block (16) which is slidably arranged inside the guide groove (7).

6. The vertebral plate rongeur for minimally invasive spine surgery according to claim 4, characterized in that: The front and rear sides of the left end of the fixed pliers plate (2) are fixedly connected to the bottom end of the anti-slip sleeve (17), and the front and rear anti-slip sleeves (17) are sleeved and connected to the outer wall of the movable pliers plate (5), and the front and rear anti-slip sleeves (17) are used to limit and guide the sliding movable pliers plate (5).

7. The vertebral plate rongeur for minimally invasive spine surgery according to claim 4, characterized in that: The transverse center axis of the fixed jaw plate (2) and the transverse center axis of the movable jaw plate (5) are arranged parallel to each other, and the movable jaw blade (9) at the left end of the movable jaw plate (5) and the fixed jaw blade (8) at the left end of the fixed jaw plate (2) perform a bone cutting operation after being fitted together.

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