Under-microscope full-visualization spine end plate treatment set

Abstract

The invention is applicable to the technical field of spinal operation instruments, and provides an endoscopic full-visualization spinal end plate treatment kit, which comprises an osteotome assembly, a spinal end plate treatment assembly, a spinal end plate treatment assembly and a spinal end plate treatment assembly, and is characterized in that the osteotome assembly is used for removing a bony structure; the bone grafting funnel is used for guiding the soft tissue into the intervertebral space; the scraping rod is used for cleaning intervertebral soft tissue and the surface of an end plate after pressure reduction is completed, the scraping rod comprises a handle part and a scraping part connected with the handle part through a rod body, the scraping part deflects by a set angle relative to the axis of the rod body, and the scraping part is of a triangular annular structure; a scraping blade is arranged at an opening in at least one side of the triangular annular structure; the device has the beneficial effects that aiming at the problems of long operation time, complicated operation, low efficiency and the like caused by no corresponding surgical instrument for cleaning bony structures such as spinous processes, intervertebral soft tissues and the like in the prior art, the device can be used for cleaning soft tissues and the like outside the limited range of an endoscopic fusion channel in a targeted manner, so that the operation efficiency is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of spinal surgery equipment, and in particular relates to a fully visualized spinal endplate treatment kit under a microscope. Background Art

[0002] Posterior lumbar interbody fusion (Posterior Lumbar Interbody Fusion), also known as posterior lumbar interbody fusion (Posterior Lumbar Interbody Fusion), is an orthopedic spinal fusion surgical procedure. With the advancement of surgical techniques, large-channel spinal endoscopes have been used to assist in minimally invasive procedures. However, existing technologies lack specific surgical instruments. For example, before and after decompression, there are no corresponding surgical instruments to clean bony structures such as the facet joints and lamina, as well as intervertebral soft tissue and cartilage endplates. This results in long surgical times, cumbersome procedures, and low efficiency. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a fully visualized spinal endplate treatment kit under a microscope, aiming to solve the technical problems existing in the existing technology mentioned in the background technology.

[0004] The embodiment of the present invention is implemented as follows: a fully visualized spinal endplate treatment kit under microscope, comprising:

[0005] A bone knife assembly for removing bony structures;

[0006] Bone graft funnel, used to introduce soft tissue into the intervertebral space;

[0007] It is characterized by further comprising:

[0008] A scraper rod is used to clean the intervertebral soft tissue and end plate surface after decompression is completed. The scraper rod includes a handle and a scraping part connected to the handle through a rod body. The scraping part is deflected at a set angle relative to the axis of the rod body. The scraping part is a triangular ring structure, and a scraping blade is provided at at least one side opening of the triangular ring structure.

[0009] As an optimal technical solution, the bone knife assembly includes a flat-edge bone knife, a flat-edge bone knife, a bilateral-edge bone knife, a partially bilateral-edge bone knife, a bevel-edge bone knife, a bevel-edge bone knife and a microscopic scraper. The front end of the flat-edge bone knife has a cutting edge, the front end of the flat-edge bone knife is inclined to one side and is provided with a cutting edge, the front end of the bilateral-edge bone knife has cutting edges on both sides, the front end of the partially bilateral-edge bone knife is inclined to one side and has cutting edges on both sides, the front end of the bevel-edge bone knife is provided with a bevel cutting edge, and the front end of the bevel-edge bone knife is inclined to one side and is provided with a bevel cutting edge.

[0010] As a preferred technical solution, it also includes an external expansion sleeve used in conjunction with the bone grafting funnel.

[0011] As a preferred technical solution, it further includes a rammer, which is used to push the bone particles in the bone grafting funnel into the intervertebral space and realize impact bone grafting in the intervertebral space.

[0012] As a preferred technical solution, it further includes a trephine. One end of the trephine is annular and is distributed with saw teeth. A handle is provided at the other end of the trephine, and the handle is of a columnar structure.

[0013] The beneficial effects of the present invention are as follows: In view of the problem that there are no corresponding surgical instruments in the prior art to clean the bone structures such as the zygapophyseal joint and lamina, intervertebral soft tissues, endplate cartilage, etc., resulting in long surgical time, cumbersome operation, low efficiency, etc., the proposed endoscopic visualization spinal endplate treatment set can specifically clean the soft tissues outside the range restricted by the endoscopic fusion channel, effectively improving the surgical efficiency. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a flat-edge osteotome provided by an embodiment of the present invention;

[0015] Figure 2 It is Figure 1 the top view of

[0016] Figure 3 It is a schematic structural diagram of a flat and beveled-edge osteotome provided by an embodiment of the present invention;

[0017] Figure 4 It is Figure 3 the top view of

[0018] Figure 5 It is a schematic structural diagram of an inclined-edge osteotome provided by an embodiment of the present invention;

[0019] Figure 6 It is Figure 5 the top view of

[0020] Figure 7 It is a schematic structural diagram of a beveled and inclined-edge osteotome provided by an embodiment of the present invention;

[0021] Figure 8 It is Figure 7 the top view of

[0022] Figure 9 It is a schematic structural diagram of a double-edge osteotome provided by an embodiment of the present invention;

[0023] Figure 10 It is Figure 9 the top view of

[0024] Figure 11 It is a schematic structural diagram of a beveled double-edge osteotome provided by an embodiment of the present invention;

[0025] Figure 12 is Figure 11 the top view of;

[0026] Figure 13 is the structural schematic diagram of the outer expansion sleeve provided by the embodiment of the present invention;

[0027] Figure 14 is the structural schematic diagram of the bone graft funnel provided by the embodiment of the present invention;

[0028] Figure 15 is the structural schematic diagram of the rammer provided by the embodiment of the present invention;

[0029] Figure 16 is the structural schematic diagram of the microscissors provided by the embodiment of the present invention;

[0030] Figure 17 is the structural schematic diagram of the scraping rod provided by the embodiment of the present invention;

[0031] Figure 18 is the structural schematic diagram of the trephine provided by the embodiment of the present invention.

[0032] In the figure: 1 - flat-edge bone knife, 2 - flat-side-edge bone knife, 3 - double-side-edge bone knife, 4 - partial double-side-edge bone knife, 5 - inclined-edge bone knife, 6 - partial inclined-edge bone knife, 7 - microscissors, 8 - scraping rod, 801 - handle part, 802 - rod body, 803 - scraping part, 804 - scraping edge, 9 - trephine, 10 - outer expansion sleeve, 11 - rammer, 12 - bone graft funnel. Detailed implementation manners

[0033] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] It can be understood that the terms "first", "second", etc. used in the present application can be used herein to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0035] As Figures 1 - 17 shown, in one embodiment, a microscopically fully visualized spinal endplate treatment set is proposed, including a bone knife assembly (as Figures 1 - 12 and Figure 17 shown), which is used to remove the bony structure;

[0036] a bone graft funnel 12 (as Figure 14 shown), which is used to introduce soft tissues into the intervertebral space;

[0037] It further includes:

[0038] The scraping rod 8 (as Figure 17 shown) is used to clean the intervertebral soft tissue and the endplate surface after decompression. The scraping rod 8 includes a handle portion 801 and a scraping portion 803 connected to the handle portion 801 through a rod body 802. The scraping portion 803 is deflected by a set angle relative to the axis of the rod body 802. The scraping portion 803 is a triangular ring structure, and a scraping edge 804 is provided at at least one opening side of the triangular ring structure.

[0039] In the embodiment of the present invention, the osteotome assembly and the bone graft funnel 12 are both prior arts, and no redundant description is given herein. The scraping rod 8 in the embodiment of the present invention is used to clean the intervertebral soft tissue and the endplate surface after decompression. Among them, the scraping portion 803 is deflected by a set angle relative to the axis of the rod body 802. Preferably, the deflection angle can be 10°. Due to the use of the spinal endoscope and the space limitation of the endoscopic fusion channel, the scraping portion 803 with a set inclination angle can effectively clean the intervertebral soft tissue and the endplate surface. And compared with the traditional tools, the scraping portion 803 with a set inclination angle can increase its cleaning range. And the scraping portion 803 is a triangular ring structure, and a scraping edge 804 is provided at at least one opening side of the triangular ring structure, which is convenient for cleaning and has a certain accommodation space. In addition, compared with the prior art, the special feature of the scraping rod 8 in the embodiment of the present invention is that it can not only clean the soft tissue in an oblique upward reverse scraping manner, but also clean the endplate surface in a downward forward scraping manner, with a wider applicability.

[0040] In one case of the embodiment of the present invention, the scraping edges 804 of the scraping portion 803 can be set in two types, one for forward scraping and one for reverse scraping. The difference between the two lies in the edge direction of the triangular curette; the edge of the forward scraping faces outward, and the edge of the reverse scraping faces inward to achieve different functions.

[0041] As Figures 1 - 12 and Figure 17 shown, as a preferred embodiment of the present invention, the osteotome assembly includes a flat-edge osteotome 1, a biased flat-edge osteotome 2, a double-edge osteotome 3, a biased double-edge osteotome 4, an inclined-edge osteotome 5, a biased inclined-edge osteotome 6, and an endoscopic spatula 7. The front end of the flat-edge osteotome 1 has an edge. The front end of the biased flat-edge osteotome 2 is inclined to one side and is provided with an edge. The front end of the double-edge osteotome 3 has edges on both sides. The front end of the biased double-edge osteotome 4 is inclined to one side and has edges on both sides. The front end of the inclined-edge osteotome 5 is provided with an inclined edge. The front end of the biased inclined-edge osteotome 6 is inclined to one side and is provided with an inclined edge.

[0042] In the embodiment of the present invention, the flat-edge bone knife 1, the bilateral-edge bone knife 3 and the oblique-edge bone knife 5 all have corresponding oblique-structured bone knives. Their purpose is that due to the use of spinal endoscopes and the spatial limitations of the endoscopic fusion channel, it is difficult for straight-edge bone knives to clean soft tissues outside the restricted range of the endoscopic fusion channel. Therefore, the straight-edge bone knife and the corresponding deviated-straight-edge bone knife cooperate with each other to perform better cleaning work both inside and outside the restricted range of the endoscopic fusion channel.

[0043] like Figure 13 As shown, as another preferred embodiment of the present invention, it also includes an external expansion sleeve 10 used in conjunction with the bone grafting funnel.

[0044] like Figure 15 As shown, as another preferred embodiment of the present invention, it further includes a tamping rod 11, which is used to push the bone particles in the bone graft funnel into the intervertebral space and realize compression bone grafting in the intervertebral space.

[0045] like Figure 18 As shown, as another preferred embodiment of the present invention, it further includes a ring saw 9, one end of the ring saw 9 is ring-shaped and has saw teeth distributed thereon, and the other end of the ring saw 9 is provided with a handle, and the handle is a columnar structure.

[0046] In combination with the above embodiments, in practical application, the present invention mainly includes the establishment of an endoscopic working channel, the expansion and decompression of the spinal canal, the resection of the intervertebral disc and the bone grafting of the intervertebral space.

[0047] Step 1: Establishment of the microscopic working channel

[0048] In the process of establishing a traditional large-channel full-scope fusion working channel, an endoscopic ring saw and a grinding drill are used to establish the working channel. However, when resecting the facet joint, the operation is time-consuming and labor-intensive. The bone removed by the grinding drill cannot be collected and is lost in large quantities with the flushing water, resulting in a waste of autologous bone grafting materials. Using allogeneic bone for bone grafting is not only expensive and in short supply, but also has a poor bone graft healing rate. The flat-edge bone knife 1 and the oblique-edge bone knife 5 in the embodiment of the present invention can be used for direct resection of the facet joint under large-channel endoscopy, directly establishing a working channel, being simple and convenient to operate, avoiding repeated grinding of the facet by the endoscopic ring saw, and having high efficiency. The cut block bone can be trimmed and used for intervertebral bone grafting, which not only reduces the use of expensive allogeneic bone but also increases the intervertebral bone grafting healing rate.

[0049] Step 2: Expansion and decompression of the spinal canal

[0050] After establishing the working channel, it is necessary to perform extended decompression under the spinal endoscope, and resect the lamina, lateral recess, and bony structures of the neural foramen, that is, extended decompression of the spinal canal. For some structures such as the remaining articular process joint bone mass, lateral recess, and hyperplastic osteophytes during the establishment of the working channel, when using a traditional endoscopic bayonet forceps, due to the limitation of the narrow working channel, it is impossible or difficult to resect the target bone mass. The flat-edge osteotome 2 and the oblique-edge osteotome 6 in the embodiments of the present invention can be used to supplement the traditional bayonet forceps, and can resect the articular process joint bone mass, lateral recess, hyperplastic osteophytes, and lamina bone mass under direct vision in areas where the traditional bayonet forceps are difficult to operate, thus supplementing the deficiencies of the existing endoscopic bayonet forceps.

[0051] Step 3: Resection of the intervertebral disc

[0052] After completing the decompression of the spinal canal, it is necessary to resect the intervertebral disc tissue within the intervertebral space. The intervertebral disc is surrounded by an annulus fibrosus, which is a cartilaginous fibrous structure. When resecting the intervertebral disc, it is first necessary to open the annulus fibrosus. In traditional operations, it is necessary to repeatedly bite with an endoscopic grasping forceps under the endoscope. Due to the small design of the jaws of the endoscopic operating instrument, it is necessary to perform multiple repeated operations in actual operation to achieve the expected biting range, which is time-consuming and laborious. The flat-edge osteotome 1 in the embodiments of the present invention can be closely attached to the junction of the annulus fibrosus and the endplate cartilage, and directly remove the endplate cartilage at the same time while breaking through the annulus fibrosus, improving the efficiency of opening the annulus fibrosus and resecting the endplate cartilage.

[0053] The morphology of the intervertebral disc endplate is mainly divided into two categories: flat type and concave type. For the flat endplate, the nucleus pulposus and endplate cartilage can be resected under the endoscope through a flat-edge osteotome, a double-edge osteotome, an oblique-edge osteotome, and a traditional endoscopic reamer. However, for the concave endplate morphology, operating instruments such as an endoscopic reamer, a flat-edge osteotome, a double-edge osteotome, and an oblique-edge osteotome cannot resect the endplate cartilage at the most concave part. The expandable reamer can resect a certain degree of endplate cartilage at the concave part, but its operation is performed under blind vision, increasing the risk of endplate injury and nerve injury under blind vision. The partially double-edge osteotome 4, the oblique-edge osteotome 6, and the endoscopic spatula 7 in the embodiments of the present invention can achieve the complete resection of the concave endplate cartilage under direct vision throughout the process. The large-channel endoscopic intervertebral disc processing instruments designed in this study are specially developed according to the size of the large-channel endoscope. They not only achieve direct vision operation under the entire endoscope, but also design processing tools with different angles and curvatures according to the positions of the nucleus pulposus and endplate cartilage that need to be resected specifically, enabling efficient and safe resection of the endplate cartilage and nucleus pulposus within the visual field. The scraping rod 8 and the endoscopic spatula 7 cooperate with the above-mentioned instruments step by step and complement each other to achieve the purpose of efficiently and safely resected the intervertebral disc.

[0054] Step 4: Bone grafting of the intervertebral space

[0055] After the resection of the nucleus pulposus and endplate cartilage within the intervertebral disc, placing bone particles between the upper and lower endplates of the intervertebral space can achieve osseous fusion of the upper and lower endplates, ultimately achieving biological stability. Through the bone graft funnel 12 and the outer expansion sleeve 10, for patients with a small intervertebral space height, the bone graft funnel outer expansion sleeve can be implanted to achieve the purpose of expanding the intervertebral space. The sleeve is of an inner hollow structure with a relatively large inner hollow diameter, and a large-sized bone graft funnel can be directly implanted to achieve the purpose of increasing the bone graft work efficiency.

[0056] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0057] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

[0058] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A set for microscopic fully visualized spinal endplate treatment, characterized in that, Comprising: An osteotome assembly for removing bone structures; A bone grafting funnel (12) for introducing soft tissues into the intervertebral space; Characterized in that it further comprises: A scraping rod (8) for cleaning the intervertebral soft tissues and the endplate surface after decompression is completed. The scraping rod (8) comprises a handle portion (801) and a scraping portion (803) connected to the handle portion (801) through a rod body (802). The scraping portion (803) is deflected by a set angle relative to the axis of the rod body (802). The scraping portion (803) is a triangular annular structure, and at least one side opening of the triangular annular structure is provided with a scraping edge (804).

2. The under-microscope fully visual spinal endplate treatment set according to claim 1, characterized in that The number of the scraping rods (8) is two, and the cutting edges of the scraping edges (804) of the two scraping rods (8) are in opposite directions.

3. The microscopic fully visual spinal endplate treatment set according to claim 1, characterized in that The osteotome assembly comprises a flat-edge osteotome (1), a beveled flat-edge osteotome (2), a double-edge osteotome (3), a beveled double-edge osteotome (4), an inclined-edge osteotome (5), a beveled inclined-edge osteotome (6) and a microscopic spatula (7). The front end of the flat-edge osteotome (1) has a cutting edge. The front end of the beveled flat-edge osteotome (2) is inclined to one side and is provided with a cutting edge. The front end of the double-edge osteotome (3) has cutting edges on both sides. The front end of the beveled double-edge osteotome (4) is inclined to one side and has cutting edges on both sides. The front end of the inclined-edge osteotome (5) is provided with an inclined cutting edge. The front end of the beveled inclined-edge osteotome (6) is inclined to one side and is provided with an inclined cutting edge.

4. The microscopic fully visualized spinal endplate treatment set according to claim 1, characterized in that, It further comprises an outer expansion sleeve (10) used in cooperation with the bone grafting funnel (12).

5. The under-microscope fully visual spinal endplate treatment kit according to claim 4, characterized in that It further comprises a tamper (11). The tamper (11) is used to push the bone particles in the bone grafting funnel into the intervertebral space and achieve press-fit bone grafting in the intervertebral space.

6. The microscopic fully visual spinal endplate treatment set according to claim 1, characterized in that, It further comprises a trephine. One end of the trephine is annular and is distributed with saw teeth. The other end of the trephine (9) is provided with a handle, and the handle is a columnar structure.

Images