An intervertebral space processing device under a spinal endoscope

Abstract

This utility model discloses a spinal endoscopy device for treating lumbar intervertebral disc space, relating to the field of medical devices. It includes a handle, a blade, and a sleeve. The handle has a suction channel, the outlet of which is connected to a negative pressure device. A rotating blade is located at the front end of the handle, driven by a micro-motor. The outer wall of the blade has several cutting edges, with grooves extending to the rear end of the blade. The inlet of the suction channel is connected to the rear end of the grooves. The sleeve is fitted over the blade, allowing the blade to rotate relative to it. The rear end of the sleeve is detachably connected to the handle, and a cutting window is provided on the side wall of the sleeve. This device allows for simultaneous tissue cutting and negative pressure suction to remove debris, maintaining a clear surgical field. Cutting is convenient, precise, and efficient, reducing surgical trauma and providing an ideal contact surface for bone fusion.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a device for treating lumbar intervertebral disc space under spinal endoscopy. Background Technology

[0002] Currently, endoscopic lumbar interbody fusion requires thorough cleaning of the intervertebral space, removal of degenerated nucleus pulposus tissue, and treatment of the superior and inferior vertebral endplates to ensure secure implant placement. However, existing techniques primarily rely on traditional tools such as reamers, endplate scrapers, and nucleus pulposus forceps. This approach presents the following problems:

[0003] 1. Limited field of view: The field of view under the endoscope is easily blocked by the operating instruments, which affects the cleaning effect.

[0004] 2. Inefficiency: The nucleus pulposus forceps need to be repeatedly inserted and withdrawn when cleaning the nucleus pulposus tissue. The amount of tissue that can be grasped each time is limited, which leads to a longer operation time.

[0005] 3. Cumbersome operation: Multiple tools are required to complete the nucleus pulposus cleaning and endplate treatment, which increases the complexity of the operation and the risk of intraoperative complications. Utility Model Content

[0006] To address the aforementioned technical problems, this invention provides a spinal endoscopic lumbar intervertebral disc resection device that enables simultaneous tissue cutting and negative pressure suction to remove debris, maintaining a clear surgical field. The cutting is convenient, precise, and efficient, reducing surgical trauma and providing an ideal contact surface for bone fusion.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a spinal endoscopy lumbar intervertebral space treatment device, including a handle, a blade and a sleeve;

[0008] The handle is provided with a suction channel, and the outlet of the suction channel is used to communicate with a negative pressure device.

[0009] The front end of the handle is provided with a rotating blade head, which is driven by a micro motor. The outer wall of the blade head is distributed with several blades, and there are grooves between the blades. The grooves extend to the rear end of the blade head, and the liquid inlet of the suction channel is connected to the rear end of the grooves.

[0010] The sleeve is fitted over the outside of the cutter head, the cutter head rotates relative to the sleeve, the rear end of the sleeve is detachably connected to the handle, and the side wall of the sleeve is provided with a cutting window.

[0011] When using the device, connect the outlet to the negative pressure system commonly used in operating rooms. If a large area needs to be cut, remove the sleeve and extend the blade to the nucleus pulposus for cutting. The cut tissue is then suctioned away from the blade groove along the suction channel by negative pressure, removing the cartilage layer and exposing the bone surface. When partial cutting is required, attach the sleeve and align the cutting window of the sleeve with the area to be cut. The corresponding tissue enters the rotating area of ​​the blade through the cutting window for cutting. The presence of the sleeve helps to prevent excessive tissue from being cut and damaged.

[0012] Preferably, a sealing ring is provided between the blade and the handle to prevent tissue fluid from leaking out between the blade and the handle.

[0013] Preferably, the cutting edge is located at the opening of the groove, and the spacing between the grooves is less than 1 mm. A smaller groove spacing avoids numerous vents and ensures sufficient negative pressure within the groove.

[0014] Preferably, each of the cutting edges is axially arranged on the outer wall of the cutting head. This facilitates cutting.

[0015] Preferably, the rear end of the sleeve is screwed or snapped into the handle, facilitating the assembly and disassembly of the sleeve and handle.

[0016] Preferably, the front end of the sleeve is sealed to prevent the front end from cutting the tissue.

[0017] Preferably, the handle is divided into a front chamber and a rear chamber by a partition. The suction channel and the micro motor are located in the rear chamber. The shaft of the micro motor rotates from the center of the partition and passes through the front chamber. A sealing ring is provided between the shaft of the micro motor and the partition. The shaft of the micro motor is linked with the cutter head. The front end of the suction channel connects to the front chamber from the partition. A confluence space is provided between the rear end of the cutter groove and the partition. Under negative pressure, the cut tissue first gathers into the confluence space, and then passes through the partition and is sucked away from the suction channel.

[0018] Preferably, a number of through holes are distributed around the shaft of the micro motor, and the front end of the suction channel is connected to each of the through holes through a number of branch pipes. This facilitates the presence of more drainage ports in the manifold space, so as to fully drain the tissue from the manifold space.

[0019] Preferably, the micro motor's rotating shaft has a docking shaft at its front end, and the cutter head has a docking hole on its rear end face. The docking hole and the docking shaft are splined together. A limiting platform is provided on the rear outer wall of the cutter head, and a retaining ring is provided around the cutter head. The retaining ring is screwed onto the front end of the handle, and the retaining ring is used to restrict the forward sliding of the limiting platform. The detachable connection between the cutter head and the docking shaft facilitates disassembly and assembly, and the retaining ring prevents the cutter head from falling off the handle.

[0020] Preferably, the suction channel is equipped with an electric valve, and a pressure relief branch pipe is provided at one end of the suction channel near the liquid outlet. The pressure relief branch pipe is equipped with a pressure relief valve, which is used to open when the negative pressure at the liquid outlet exceeds a threshold. The valve includes a suction switch and a main switch. The suction switch is used to control the electric valve, and the main switch is used to simultaneously control the micro motor and the electric valve.

[0021] The electric valve can disconnect the negative pressure provided by the negative pressure device to the blade head, so that the negative pressure suction on the surgical site can be stopped at any time, making the surgical operation safer. At this time, the negative pressure of the negative pressure device on the outlet of the suction tube will increase. At this time, the pressure relief valve opens to connect with the outside, which can avoid the situation of negative pressure overload.

[0022] The beneficial effects of this utility model are:

[0023] This method allows for simultaneous tissue cutting and negative pressure suction to remove debris, maintaining a clear surgical field. The cutting is convenient, precise, and efficient, reducing surgical trauma and providing an ideal contact surface for bone fusion. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only 5 of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the handle and sleeve according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the overall front section of an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the blade head according to an embodiment of the present utility model;

[0028] Figure 4 This is an internal schematic diagram of an embodiment of the present utility model;

[0029] Figure 5 This is a simplified structural diagram of the present invention and the negative pressure device according to an embodiment of the present utility model.

[0030] The components include: 1. Handle; 2. Sleeve; 3. Cutting window; 4. Blade head; 5. Blade groove; 6. Blade edge; 7. Connecting hole; 8. Miniature motor; 9. Partition plate; 10. Connecting shaft; 11. Limiting platform; 12. Snap ring; 13. Suction channel; 14. Electric valve; 15. Pressure relief branch pipe; 16. Pressure relief valve; 17. Suction switch; 18. Main switch; 19. Negative pressure device. Detailed Implementation

[0031] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0032] Example

[0033] like Figure 1 As shown, a spinal endoscopy device for treating lumbar intervertebral discs includes a handle 1, a blade 4, and a sleeve 2. The handle 1 is provided with a suction channel 13, the outlet of which is connected to a negative pressure device 19. The front end of the handle 1 is provided with a rotating blade 4, which is driven by a micro motor 8. The outer wall of the blade 4 is provided with a plurality of blades 6, and the blades 6 are connected to a groove 5, which extends to the rear end of the blade 4. The inlet of the suction channel 13 is connected to the rear end of the groove 5. The sleeve 2 is fitted over the blade 4, and the blade 4 rotates relative to the sleeve 2. The rear end of the sleeve 2 is detachably connected to the handle 1, and the side wall of the sleeve 2 is provided with a cutting window 3.

[0034] When in use, connect the outlet to the negative pressure device 19 commonly used in operating rooms. If a large area needs to be cut, remove the sleeve 2 and extend the blade 4 to the nucleus pulposus tissue for cutting. The cut tissue is sucked away by the negative pressure from the blade groove 5 along the suction channel 13, removing the cartilage layer and exposing the bone surface. When partial cutting is required, attach the sleeve 2 and align the cutting window 3 of the sleeve 2 with the area to be cut. The corresponding tissue enters the rotating area of ​​the blade 4 through the cutting window 3 for cutting. Due to the presence of the sleeve 2, excessive tissue damage can be avoided.

[0035] A sealing ring is provided between the blade head 4 and the handle 1 to prevent tissue fluid from flowing out between the blade head 4 and the handle 1.

[0036] The cutting edge 6 is located at the opening of the groove 5, and the spacing between the grooves is less than 1 mm. The smaller spacing between the grooves avoids a large number of vents and ensures sufficient negative pressure within the groove 5.

[0037] Each of the blades 6 is axially arranged on the outer wall of the cutter head 4, facilitating cutting.

[0038] The rear end of the sleeve 2 is screwed or snapped into the handle 1, facilitating the assembly and disassembly of the sleeve 2 and the handle 1.

[0039] The sleeve 2 has a front end sealing feature to prevent the front end from cutting the tissue.

[0040] The handle 1 is divided into a front chamber and a rear chamber by a partition 9. The suction channel 13 and the micro motor 8 are located in the rear chamber. The rotating shaft of the micro motor 8 rotates from the center of the partition 9 and passes through the front chamber. A sealing ring is provided between the rotating shaft of the micro motor 8 and the partition 9. The rotating shaft of the micro motor 8 is linked with the cutter head 4. The front end of the suction channel 13 connects to the front chamber from the partition 9. A confluence space is left between the rear end of the blade groove 5 and the partition 9. Under negative pressure, the cut tissue first gathers into the confluence space, and then passes through the partition 9 and is sucked away from the suction channel 13.

[0041] Several through holes are distributed around the shaft of the micro motor 8, and the front end of the suction channel 13 is connected to each of the through holes through several branch pipes. This facilitates the presence of more drainage ports in the manifold space, so as to fully drain the tissue from the manifold space.

[0042] The micro motor 8 has a docking shaft 10 at its front end, and the cutter head 4 has a docking hole 7 on its rear end face. The docking hole 7 and the docking shaft 10 are splined together. The outer rear wall of the cutter head 4 has a limiting platform 11, and a retaining ring 12 is provided around the cutter head 4. The retaining ring 12 is screwed onto the front end of the handle 1, and the retaining ring 12 is used to restrict the limiting platform 11 from sliding forward. The detachable connection between the cutter head 4 and the docking shaft 10 facilitates disassembly and assembly, and the retaining ring 12 prevents the cutter head 4 from falling off the handle 1.

[0043] Example 2

[0044] Compared to Embodiment 1, Embodiment 2 also includes the following differences: the suction channel 13 is provided with an electric valve 14, and a pressure relief branch pipe 15 is provided at one end of the suction channel 13 near the liquid outlet. The pressure relief branch pipe 15 is provided with a pressure relief valve 16. The pressure relief valve 16 is used to open when the negative pressure at the liquid outlet exceeds a threshold. It includes a suction switch 17 and a main switch 18. The suction switch 17 is used to control the electric valve 14, and the main switch 18 is used to simultaneously control the micro motor 8 and the electric valve 14.

[0045] The electric valve 14 can disconnect the negative pressure provided by the negative pressure device 19 to the blade head 4, so that the negative pressure suction on the surgical site can be stopped at any time, making the surgical operation safer. At this time, the negative pressure of the negative pressure device 19 to the outlet of the suction pipe will increase. At this time, the pressure relief valve 16 opens to connect with the outside, which can avoid the situation of negative pressure overload.

[0046] The beneficial effects of this utility model are:

[0047] This method allows for simultaneous tissue cutting and negative pressure suction to remove debris, maintaining a clear surgical field. The cutting is convenient, precise, and efficient, reducing surgical trauma and providing an ideal contact surface for bone fusion.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A device for endoscopic lumbar intervertebral discectomy, characterized in that, Includes a handle (1), a cutter head (4), and a sleeve (2); The handle (1) is provided with a suction channel (13), and the outlet of the suction channel (13) is used to communicate with the negative pressure device (19); The front end of the handle (1) is provided with a rotating blade (4), which is driven by a micro motor (8). The outer wall of the blade (4) is provided with a plurality of blades (6), and there are grooves (5) between the blades (6). The grooves (5) extend to the rear end of the blade (4). The liquid inlet of the suction channel (13) is connected to the rear end of the grooves (5). The sleeve (2) is fitted outside the cutter head (4), the cutter head (4) rotates relative to the sleeve (2), the rear end of the sleeve (2) is detachably connected to the handle (1), and the side wall of the sleeve (2) is provided with a cutting window (3).

2. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: A sealing ring is provided between the cutter head (4) and the handle (1).

3. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: The blade (6) is located at the opening of the groove (5), and the spacing between the grooves is less than 1 mm.

4. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: Each of the blades (6) is axially arranged on the outer wall of the blade head (4).

5. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: The rear end of the sleeve (2) is screwed or snapped into the handle (1).

6. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: The front end of the sleeve (2) is sealed.

7. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: The handle (1) is divided into a front chamber and a rear chamber by a partition (9). The suction channel (13) and the micro motor (8) are located in the rear chamber. The rotating shaft of the micro motor (8) rotates from the center of the partition (9) and passes through the front chamber. A sealing ring is provided between the rotating shaft of the micro motor (8) and the partition (9). The rotating shaft of the micro motor (8) is linked with the cutter head (4). The front end of the suction channel (13) is connected from the partition (9) to the front chamber. A confluence space is left between the rear end of the cutter groove (5) and the partition (9).

8. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: Several through holes are distributed around the shaft of the micro motor (8), and the front end of the suction channel (13) is connected to each of the through holes through several branch pipes.

9. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: The micro motor (8) has a docking shaft (10) at the front end of its rotating shaft, and the cutter head (4) has a docking hole (7) at its rear end face. The docking hole (7) and the docking shaft (10) are splined together. The cutter head (4) has a limiting platform (11) on its rear outer wall. The cutter head (4) has a retaining ring (12) on its periphery. The retaining ring (12) is screwed to the front end of the handle (1). The retaining ring (12) is used to restrict the limiting platform (11) from sliding forward.

10. The endoscopic lumbar intervertebral disc resection device according to claim 1, characterized in that: The suction channel (13) is equipped with an electric valve (14), and a pressure relief branch pipe (15) is provided at one end of the suction channel (13) near the liquid outlet. The pressure relief branch pipe (15) is equipped with a pressure relief valve (16), which is used to open when the negative pressure at the liquid outlet exceeds a threshold. It also includes a suction switch (17) and a main switch (18). The suction switch (17) is used to control the electric valve (14), and the main switch (18) is used to simultaneously control the micro motor (8) and the electric valve (14).

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