CN221083727U

CN221083727U - UBE mirror osteotome

Info

Publication number: CN221083727U
Application number: CN202322728650.5U
Authority: CN
Inventors: 易生辉; 刘建国; 陈辉明; 孙明星; 骆阳; 汤文; 江晓兵
Original assignee: Yueyang City Hospital Of Traditional Chinese Medicine
Current assignee: Yueyang City Hospital Of Traditional Chinese Medicine
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-06-07
Anticipated expiration: 2033-10-11

Abstract

The utility model belongs to the technical field of spinal endoscopic surgery, and particularly relates to a UBE (UBE) under-scope osteotome which comprises a cutter handle, a cutter body and a cutter head, wherein the cutter handle is connected with the cutter body through a connecting part, the axis of the cutter body is obliquely arranged relative to the axis of the cutter handle, the cutter head is provided with a cutting edge which is bent along the length direction of the cutter head, the cutter head is arranged at one end of the cutter body and is obliquely arranged relative to the cutter body, the height direction of the cutter head is in the same direction as the axis direction of the cutter handle, and when the projection is carried out along the axis direction of the cutter handle, the projection of the cutter handle coincides with the projection of the cutter head.

Description

UBE mirror osteotome

Technical Field

The utility model belongs to the technical field of spinal endoscopic surgery, and particularly relates to a UBE (UBE) under-scope osteotome.

Background

The UBE technique is a unilateral double-channel endoscope technique and is mainly used for the endoscope minimally invasive treatment of spinal stenosis, cervical spondylosis, thoracic vertebra lesion and lumbar vertebra degenerative disease. Unlike the single pass of the foramen mirror, this technique typically creates two passes, one for the viewing pass and one for the instrument manipulation pass. Because two channels are adopted, the visual field under the lens is larger and wider, the size of the operation instrument is limited to be small, and the technology has relatively high efficiency in various spinal minimally invasive technologies.

At present, in the unilateral dual-channel endoscope technology, a bone knife under the mirror is generally adopted for excision of focuses such as articular process, vertebral lamina and spinous process, most of the bone knives are in a straight line shape, the end part of the bone knife is provided with a knife head, and a small number of the bone knives are in an angle shape, namely, the knife head is bent relative to a knife bar, but because an instrument operation channel formed in the unilateral dual-channel endoscope technology is generally an inclined channel, referring to fig. 1, when the existing bone knife 500 enters from the operation channel 300 and contacts with the bone tissue 400, the whole knife body is in a straight line inclined state, no matter whether the knife head is in a straight line shape or is bent relative to the knife bar, when the existing bone knife 500 is knocked by a hammer, the direction of knocking force is inclined relative to the horizontal plane where the bone tissue is located, and sometimes sliding occurs between the knife head and the bone tissue, so that other tissues or nerves are damaged, and the risk of bleeding in operation is higher. And the following problems are found when applied in the surgery of partial cases: the tool bit is in a straight shape, even if the acting force of knocking is vertical relative to the horizontal plane where the bone tissue is located when the bone tissue is cut, when the part to be cut is the local position of the edge of the bone tissue, as shown in fig. 2, for example, when the focus part to be cut is only the local area (the area 401 to be cut in fig. 2) of the edge of the bone tissue, if the whole edge with the focus area is directly cut, the cut tissue is more, which is not beneficial to guaranteeing the stability of the joint in operation. If only the focus area is resected, the local area can be resected completely by obliquely cutting bones at least once on the bone tissue by utilizing the cutter head along the two sides of the focus area, on one hand, the operation efficiency is lower, on the other hand, no matter whether the knocking acting force is vertical or not, the bone tissue can be further cracked along the bone cutting position at some time under the knocking acting force, and a certain risk in operation still exists.

Disclosure of utility model

The utility model aims to solve the technical problem of providing the UBE under-scope osteotome which can improve the operation efficiency, prevent excessive bone tissues from being resected, is beneficial to the stability of joints after operation and reduces the risk in operation aiming at the situation that a focus area is located at the edge part of the bone tissues.

The cutter comprises a cutter handle, a cutter body and a cutter head, wherein the cutter handle is connected with the cutter body through a connecting part, the axis of the cutter body is obliquely arranged relative to the axis of the cutter handle, the cutter head is provided with a cutting edge, the cutting edge is bent along the length direction of the cutter head, the cutter head is arranged at one end of the cutter body and is obliquely arranged relative to the cutter body, the height direction of the cutter head is in the same direction as the axis direction of the cutter handle, and when the cutter head projects along the axis direction of the cutter handle, the projection of the cutter handle coincides with the projection of the cutter head.

Further, an included angle is formed between two ends of the cutting edge, and the included angle is 30-150 degrees.

Further, the blade is arc-shaped along the length direction of the blade.

Furthermore, an opening structure is formed between the two ends of the cutting edge on the cutter head, the opening structure is arranged in a direction deviating from the cutter body, and in a working state, the area to be resected on the osseous tissue can be observed along the observation channel through the opening structure.

Further, the center of a plane formed by the connecting line between the cutting edge and the two ends of the cutting edge is positioned on the extension line of the axis of the knife handle.

Further, the top of the cutter handle is a plane perpendicular to the axis of the cutter handle.

Furthermore, the thickness of one end of the cutter head, which is connected with the cutter body, is larger than that of one end, which is away from the cutter body.

Further, the thickness of the cutter head gradually decreases from the end connected with the cutter body to the end deviating from the cutter body, so that the cutter head forms a cutting edge at the end deviating from the cutter body.

Furthermore, the joint of the cutter head and the cutter body is transited through an inclined plane or a curved surface.

Furthermore, one side of the connecting part is fixed with the knife handle, and the knife body is detachably connected with the other side of the connecting part.

The tool bit and the tool body are still positioned on the same vertical straight line after extending into the inclined channel, so that the inclined access straight operation is realized. Under the circumstances when the regional local region that is bone tissue edge to treating the excision region as shown, the shape that the cutting edge formed can enclose the regional dress of treating the excision, once only excision through striking the handle of a knife, on the basis of improving operating efficiency, can not excision too much bone tissue, does benefit to the joint stability of postoperative to the condition of bone tissue fracture along osteotomy department is difficult for appearing, has also reduced the postoperative risk. Compared with the annular cutter head, the cutter head is of an open structure, the visible area is larger during osteotomy operation, the visibility is high, and the operation is safer and more convenient. Because for straight operation of inclined way, when striking the handle of a knife and cutting the bone through the cutting edge of tool bit, the power that acts on the bone tissue surface can approximate perpendicular angle, and the power line is more even, reduces the condition that the tool bit skids when striking, avoids the art to damage other tissues, nervous condition because of the tool bit skids, combines the setting form of tool bit, under the regional local circumstances in bone tissue edge in focus area, can reduce the art risk more effectively.

Drawings

Fig. 1 is a reference diagram of the state of use of a conventional osteotome.

Fig. 2 is a schematic view of the bone tissue edge to be resected in a localized area only.

FIG. 3 is a reference view showing the state of use of the osteotome under the UBE mirror of the present utility model.

Fig. 4 is a schematic view of a first view angle structure of the osteotome under the UBE mirror according to the present utility model.

Fig. 5 is a schematic view of a second view angle structure of the osteotome under the UBE mirror of the present utility model.

Fig. 6 is a schematic view of a first arrangement of the cutting edges in the UBE-mirror osteotome of the present utility model.

Fig. 7 is a schematic view of a second arrangement of the blade in the UBE mirror osteotome of the present utility model.

In the figure: 1. a knife handle; 2. a blade body; 3. a cutter head; 31. a blade; 32. an opening structure; 4. a connection part; 100. skin; 200. an observation channel; 300. an operation channel; 400. bone tissue; 401. a region to be resected; 500. an existing osteotome.

Detailed Description

As shown in fig. 2-7, the utility model comprises a cutter handle 1, a cutter body 2 and a cutter head 3, wherein the cutter handle 1 is connected with the cutter body 2 through a connecting part 4, and the axis of the cutter body 2 is obliquely arranged relative to the axis of the cutter handle 1, namely an included angle is formed between the axis of the cutter body 2 and the axis of the cutter handle 1. The cutter head 3 has a blade 31, and as shown in fig. 5 to 7, the blade 31 is provided so as to be bent in the longitudinal direction of the cutter head, that is, the blade 31 is a non-straight cutter. The tool bit 3 is arranged at one end of the tool body 2 and is obliquely arranged relative to the tool body 2, namely, the height direction of the tool bit 3 is obliquely arranged relative to the axial direction of the tool body 2, and the height direction of the tool bit 3 is in the same direction as the axial direction of the tool shank 1, and when the projection is carried out along the axial direction of the tool shank 1, the projection of the tool shank 1 is overlapped with the projection of the tool bit 3.

The use state of the utility model is shown by referring to fig. 3, the skin 100 is provided with an observation channel 200 and an operation channel 300, the tail ends of the channel 200 and the operation channel 300 are led to the osseous tissue 400, the tool bit 3 and the tool body 2 of the under-lens osteotome 600 extend into the operation channel 300, and the operation channel 300 is an inclined channel, but the projection of the tool bit 3 and the tool handle 1 on the axis direction of the tool handle 1 coincides, and after the tool bit 3 and the tool body 2 extend into along the inclined channel, the tool bit 3 and the tool handle 1 are still positioned on the same vertical straight line, so as to realize the inclined-in straight operation. Under the condition that the region 401 to be resected is a local region of the edge of the bone tissue 400 as shown in fig. 2, the shape formed by the cutting edge 31 can enclose the region 401 to be resected, and the region 401 to be resected is resected once by knocking the knife handle 1, so that on the basis of improving the operation efficiency, excessive bone tissue cannot be resected, the stability of the joint after operation is facilitated, the situation that the bone tissue 400 cracks along the osteotomy position is not easy to occur, and the risk in operation is also reduced. Compared with the annular cutter head, the cutter head 3 is of an open structure, the visible area is larger during osteotomy operation, the visibility is high, and the operation is safer and more convenient.

And because for straight operation of inclined way, when striking handle of a knife 1 and cutting the bone through the cutting edge 31 of tool bit 3, the power that acts on the surface of osseous tissue 400 can approximate perpendicular angle, and the power line is more even, reduces the condition that tool bit 3 skidded when striking, avoids the condition that other tissues, nerve are damaged because of tool bit 300 skidded in the art, combines the setting form of tool bit, under the local circumstances of focus region in osseous tissue edge, can reduce the risk in the art more effectively. And because the knife handle 1 is also in a bending state relative to the knife body 2, after the knife head 3 and the knife body 2 extend into the operation channel 300, the incision of the knife handle 1 and the operation channel 300 on the skin 100 is in a staggered state in the vertical direction, so that the soft tissue at the incision of the operation channel 300 can be prevented from blocking the knife handle 1, and the operation of a surgical operator is facilitated.

In one embodiment of the present utility model, as shown in fig. 6, the blade 31 is bent along its length direction, so that an included angle is formed between two ends of the blade 31, the included angle is 30 ° -150 °, and the included angle range can ensure that the coverable area of the blade 31 is not too small, and simultaneously ensure that a certain distance is formed between the position where the included angle is located and the edge of the bone tissue 400 when the two ends of the blade 31 are located at the edge of the bone tissue 400.

In another embodiment of the present utility model, as shown in fig. 7, the blade 31 is curved along its length, so as to reduce the local concentration of stress when the bone is knocked.

The opening structure 32 is formed between the two ends of the blade 31 on the cutter head 3, that is, the above-mentioned opening structure area is formed, the opening structure 32 is disposed towards the direction away from the cutter body 2, as in the view of fig. 4, the cutter body 2 is disposed towards the right side, and the opening structure 32 is disposed towards the left side, so that in the working state shown in fig. 3, the opening structure 32 can be directly observed along the observation channel 200, and the area 401 to be resected on the osseous tissue 400 can be directly observed through the opening structure 32, thereby facilitating the observation during operation and improving the operation safety.

Preferably, the plane formed by the connection line between the blade 31 and the two ends of the blade 31 is located on the extension line of the axis of the tool holder 1, so as to ensure that the blade 31 is centrally located with respect to the tool holder 1, and the acting force generated by the blade 31 when the tool holder 1 is knocked is more uniform.

The top of the tool handle 1 is a plane perpendicular to the axis of the tool handle 1, so that a stress surface during knocking is perpendicular to the axis of the tool handle 1, and the vertical transfer of knocking acting force is facilitated.

The thickness of one end of the cutter head 3 connected with the cutter body 2 is larger than that of one end deviating from the cutter body 2, so that the connection strength between the cutter head 3 and the cutter body 2 is ensured. Specifically, the thickness of the cutter head 3 gradually decreases from the end connected with the cutter body 2 to the end deviating from the cutter body 2, so that the cutter head 3 forms a cutting edge 31 at the end deviating from the cutter body 2, and the side surface of the cutter head 3 is smoother on the basis of ensuring the connection strength between the cutter head 3 and the cutter body 2.

The tool bit 3 passes through inclined plane or curved surface transition with blade 2 junction for tool bit 3 and blade 2 junction smoothness is higher, does not have sharp-pointed protruding, avoids this department's removal to cause the scratch to tissue or nerve and lead to producing the damage in the art.

One side of the connecting part 4 is fixed with the knife handle 1, and the knife body 2 is detachably connected with the other side of the connecting part 4. Specifically, the connecting portion 4 is provided with fixed cover on one side that deviates from handle of a knife 1, blade 2 is the shaft-like, and blade 2 wears to establish in fixed cover and with fixed cover threaded connection to can dismantle with connecting portion 4 and be connected. Can be conveniently disassembled and assembled to replace the cutter body 2 provided with the cutter heads 3 with different sizes, thereby being suitable for the application of more scenes in operation.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of protection of the application is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order and there are many other variations of the different aspects of one or more embodiments of the application as described above, which are not provided in detail for the sake of brevity.

One or more embodiments of the present application are intended to embrace all such alternatives, modifications and variations as fall within the broad scope of the present application. Accordingly, any omissions, modifications, equivalents, improvements and others which are within the spirit and principles of the one or more embodiments of the application are intended to be included within the scope of the application.

Claims

1. The utility model provides a bone knife under UBE mirror, its characterized in that, includes handle of a knife (1), blade (2) and tool bit (3), handle of a knife (1) are connected with blade (2) through connecting portion (4), and the axis of blade (2) sets up for the axis slope of handle of a knife (1), and tool bit (3) have cutting edge (31), and cutting edge (31) bend along self length direction and set up, tool bit (3) set up in the one end of blade (2) and set up for blade (2) slope, and the direction of height of tool bit (3) is the same direction with the axis direction of handle of a knife (1), and when projecting along the axis direction of handle of a knife (1), the projection of handle of a knife (1) coincides with tool bit (3) projection.

2. The UBE under-scope osteotome of claim 1, wherein the edges (31) are angled at 30 ° -150 ° therebetween.

3. The UBE under-scope osteotome of claim 1, wherein said blade (31) is curved along its length.

4. A bone knife under a UBE mirror according to any of claims 1-3 and characterized in that an opening structure (32) is formed in the cutting head (3) between the two ends of the cutting edge (31), the opening structure (32) being arranged in a direction away from the blade body (2), and in the operational state, the region (401) to be resected on the bone tissue (400) can be observed along the observation channel (200) through the opening structure (32).

5. A UBE under-scope osteotome as claimed in any one of claims 1 to 3, wherein the plane formed by the connection between the blade (31) and the two ends of the blade (31) is centered on the extension of the axis of the tool shank (1).

6. The UBE under-scope osteotome of claim 5, wherein the top of the handle (1) is a plane perpendicular to the axis of the handle (1).

7. The UBE under-the-mirror osteotome of any of claims 1-3, 6, wherein the thickness of the end of the blade head (3) connected to the blade body (2) is greater than the thickness of the end facing away from the blade body (2).

8. The UBE under-scope osteotome of claim 7, wherein the thickness of the blade (3) decreases from the end connected to the blade (2) toward the end facing away from the blade (2) such that the blade (3) forms a blade (31) at the end facing away from the blade (2).

9. The UBE under-the-mirror osteotome of any of claims 1-3, 6, 8, wherein the junction of the blade head (3) and the blade body (2) is transited by an inclined or curved surface.

10. The bone knife under the UBE mirror according to any one of claims 1 to 3, 6 and 8, wherein one side of the connecting portion (4) is fixed with the knife handle (1), and the knife body (2) is detachably connected with the other side of the connecting portion (4).