Device for scraping tissues in intervertebral space under endoscope

Abstract

The invention discloses a device for scraping tissues in an intervertebral space under an endoscope, and belongs to the technical field of spine endoscopes, the device comprises a scraping structure, and the scraping structure is arranged on the side surface of the lower end of a working sleeve and is used for scraping cartilage end plates and nucleus pulposus tissues in the intervertebral space. By arranging the scraping structure on the working sleeve, tissues in the intervertebral space are scraped, the efficiency is high, and the consumed time is short.

Description

Technical Field

[0001] The present invention belongs to the technical field of spinal endoscopy, and in particular relates to a device for scraping tissue in intervertebral spaces under endoscopy. Background Art

[0002] During spinal endoscopic surgery, the surrounding soft tissue is pushed aside by the working cannula to further expose the surgical field for endoscopic operation. The instrument channel, camera system, light source system and water inlet and outlet channels of the spinal endoscope are long rod-shaped coaxial structures. During operation, the spinal endoscope tube is extended along the working cannula to the tube opening. During the entire operation, the spinal endoscope needs to use the working cannula as a fulcrum and protective sheath to complete the safe and precise operation of the endoscopic instruments. However, in current operations, the working cannula is hand-held by the surgeon or assistant, especially the surgeon. An operation often takes 1-2 hours, or even longer. During the entire precise operation under spinal endoscopy, the control of the working cannula and avoiding the channel being too deep to damage the neural structure are extremely challenging to the physical strength and endurance of both the surgeon and the assistant. Excessive fatigue can easily cause the working cannula to slip out of control to the deep surface, posing a potential huge risk to the spinal cord and nerve roots in front of the tube opening.

[0003] During fusion and internal fixation surgery to treat spinal disorders, tissue within the intervertebral space must first be removed with a curette, including the nucleus pulposus of the intervertebral disc and the cartilaginous endplates on both sides, until punctate bleeding appears on the vertebral bone surface. Autologous bone and a fusion cage are then inserted. Due to the small diameter of the spinal endoscope channel, a curette with a larger working surface cannot be used, resulting in inefficient and time-consuming tissue removal within the intervertebral space. Summary of the Invention

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] An endoscopic intervertebral space tissue scraping device, comprising:

[0006] The scraping structure is arranged on the side surface of the lower end of the working sleeve and is used to scrape the cartilage end plate and nucleus pulposus tissue in the intervertebral space.

[0007] Furthermore, the scraping structure includes:

[0008] A plurality of through hole groups, wherein the plurality of through hole groups are arranged at intervals along the length direction of the working sleeve, and the plurality of through holes in each through hole group are arranged at intervals along the circumference of the working sleeve;

[0009] Multiple scrapers are provided corresponding to multiple through holes, and the bottom edges of the multiple scrapers are connected to the opening edges of the corresponding through holes. The enclosed space formed by the outer surface of the scraper and the barrel wall of the working sleeve is formed into an opening, and the openings of the multiple scrapers are all located on the same side.

[0010] Furthermore, two adjacent groups of through-holes are arranged in a staggered manner.

[0011] Furthermore, the distance between two adjacent groups of through holes is 2 to 3 mm.

[0012] Furthermore, the distance between two adjacent through holes in each through hole group is 1.5 to 3 mm.

[0013] Furthermore, the through holes are semicircular or rectangular holes, and the diameter or side length of each through hole is 2 to 4 mm.

[0014] Furthermore, the diameter of the working sleeve is 7 mm-12 mm.

[0015] Beneficial effects:

[0016] The present invention provides a scraping structure on the working sleeve to scrape the tissue in the intervertebral space, which is highly efficient and time-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of an axonometric view of a working sleeve structure in an endoscopic intervertebral space tissue scraping device according to the present invention;

[0018] Figure 2 This is a schematic side view of a working sleeve structure of an endoscopic intervertebral space tissue scraping device according to the present invention;

[0019] Figure 3 The figure is a schematic diagram of the overall structure of an endoscopic intervertebral space tissue scraping device according to the present invention.

[0020] Among them, 1. Spinal endoscope; 2. Working cannula; 3. Scrape. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0024] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Example 1

[0027] refer to Figure 1-Figure 3 , a device for endoscopic intervertebral space tissue scraping, comprising:

[0028] The scraping structure is arranged on the side surface of the lower end of the working sleeve and is used to scrape the cartilage end plate and nucleus pulposus tissue in the intervertebral space.

[0029] The present invention provides a scraping structure on the working sleeve to scrape the tissue in the intervertebral space, which is highly efficient and time-saving.

[0030] In specific implementation, the working casing is divided into a type with unchanged wall thickness or a type with thickened wall thickness.

[0031] Preferably, the length of the scraping structure is about 40 mm.

[0032] In this embodiment, the scraping structure includes:

[0033] Multiple through hole groups, the multiple through hole groups are spaced apart along the length direction of the working sleeve, and the multiple through holes in each through hole group are spaced apart along the circumference of the working sleeve;

[0034] Multiple scrapers 3 are arranged corresponding to multiple through holes, and the bottom edges of the multiple scrapers 3 are connected to the opening edges of the corresponding through holes. The enclosed space formed by the outer surface of the scraper 3 and the barrel wall of the working sleeve is constituted as an opening, and the openings of the multiple scrapers 3 are all located on the same side.

[0035] During specific implementation, the opening is arc-shaped or polygonal.

[0036] In this embodiment, two adjacent groups of through holes are arranged in a staggered manner, so that the scraping device can perform all-round treatment on the intervertebral space when rotating.

[0037] In this embodiment, the distance between two adjacent through hole groups is 2-3 mm.

[0038] In this embodiment, the distance between two adjacent through holes in each through hole group is 1.5-3 mm.

[0039] In this embodiment, the diameter of the working sleeve is 7 mm-12 mm.

[0040] In specific implementation, the device is designed with different diameters ranging from 7 mm to 12 mm according to the different heights of the intervertebral space, so that the surgeon can use the device in sequence "from thin to thick" according to the actual situation of the intervertebral space during surgery.

[0041] In this embodiment, the through holes are semicircular or rectangular holes, and the diameter or side length of each through hole is 2 to 4 mm.

[0042] In this embodiment, the outer diameter of the working sleeve generally has three diameter designs: 7.5 mm is matched with 3.7 / 6.3 mm spinal endoscope 1; 8.5 mm is matched with 4.3 / 7.0 mm spinal endoscope 1; 11.5 mm is matched with 10.0 / 7.1 spinal endoscope 1.

[0043] In this embodiment, after combining with different opening heights, the sleeve of each spinal endoscope 1 can have different specifications, and the intervertebral space can be expanded step by step and the intervertebral tissue can be scraped. The outer diameter of the spinal endoscope 1 is 8.5mm to 15.5mm, which is the original outer diameter of the working sleeve plus the height of the opening, and can meet the processing requirements of intervertebral spaces of different heights.

[0044] Instructions for use: When fusing the intervertebral space, the cartilage end plates and nucleus pulposus tissue in the space need to be scraped off. In order to facilitate the operation under the spinal endoscope 1, a plurality of scrapers are set on the surface of the working sleeve. The working sleeve can protect the spinal endoscope 1 while also scraping the tissue in the space through the scraping structure.

[0045] In specific implementation, when inserting from the skin, muscle and soft tissue, it is rotated in the opposite direction of the opening to avoid damage to the tissue. When scraping the gap, it is scraped along the direction of the opening.

[0046] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A device for scraping tissue in the intervertebral space under endoscopy, characterized in that: include: The scraping structure is arranged on the side surface of the lower end of the working sleeve and is used to scrape the cartilage end plate and nucleus pulposus tissue in the intervertebral space.

2. The device for endoscopic intervertebral space tissue scraping according to claim 1, characterized in that: The scraping structure comprises: A plurality of through hole groups, wherein the plurality of through hole groups are arranged at intervals along the length direction of the working sleeve, and the plurality of through holes in each through hole group are arranged at intervals along the circumference of the working sleeve; Multiple scrapers are provided corresponding to multiple through holes, and the bottom edges of the multiple scrapers are connected to the opening edges of the corresponding through holes. The enclosed space formed by the outer surface of the scraper and the barrel wall of the working sleeve is formed into an opening, and the openings of the multiple scrapers are all located on the same side.

3. The device for endoscopic intervertebral space tissue scraping according to claim 2, characterized in that: Two adjacent groups of through-holes are arranged in a staggered manner.

4. The device for endoscopic intervertebral space tissue scraping according to claim 2, characterized in that: The distance between two adjacent groups of through holes is 2 to 3 mm.

5. The device for endoscopic intervertebral space tissue scraping according to claim 2, characterized in that: The distance between two adjacent through holes in each through hole group is 1.5 to 3 mm.

6. The device for endoscopic intervertebral space tissue scraping according to claim 5, characterized in that: The through holes are semicircular or rectangular holes, and the diameter or side length of each through hole is 2 to 4 mm.

7. The device for endoscopic intervertebral space tissue scraping according to claim 6, characterized in that: The diameter of the working sleeve is 7mm-12mm.

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