CN215306399U - Under-mirror fusion surgical reamer with guiding and depth measuring functions - Google Patents
Under-mirror fusion surgical reamer with guiding and depth measuring functions Download PDFInfo
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- CN215306399U CN215306399U CN202120487402.4U CN202120487402U CN215306399U CN 215306399 U CN215306399 U CN 215306399U CN 202120487402 U CN202120487402 U CN 202120487402U CN 215306399 U CN215306399 U CN 215306399U
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Abstract
The utility model relates to the technical field of medical instruments, in particular to an under-mirror fusion surgical reamer with a guiding function and a depth measurement function, which comprises a handle, a cutter bar fixedly connected with the handle and a cutter head arranged at the front end of the cutter bar; a first through hole is formed in the axial center of the cutter bar, a second through hole is formed in the center of the cutter head in the length direction, and the second through hole is communicated with the first through hole; the middle part of the tool bit is provided with a plurality of positioning holes which penetrate through the upper surface and the lower surface of the tool bit. The first through hole and the second through hole of the utility model form a hollow guide channel for the guide wire to pass through, so that the reamer can be quickly and accurately placed in the intervertebral space under the guide of the guide wire; the arrangement of the reamer positioning hole can display the position of the reamer head during intraoperative perspective so as to obtain the approximate depth of the intervertebral space and the approximate width of the vertebral body and provide reference for selecting a fusion cage with proper length; due to the arrangement of the cutter head grooves, when the reamer is rotatably dug in the intervertebral space, the reamer can be rotatably dug in a more efficient and more convenient mode.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an under-mirror fusion surgical reamer with a guide and a depth measurement function.
Background
Lumbar fusion surgery is one of the common surgical procedures currently used to treat degenerative changes in the lumbar spine. With the development of endoscopic technology in recent years, more minimally invasive percutaneous endoscopic fusion surgery is gradually selected by spinal surgeons and applied to lumbar degenerative diseases. The percutaneous endoscopic fusion operation is consistent with other fusion operation modes, and after decompression in a vertebral canal is completed, a reamer is needed to treat an intervertebral disc to create a space for placing a fusion cage. When carrying out lumbar vertebrae interbody fusion operation, use nucleus pulposus pincers to sting down and remove the interior nucleus pulposus of intervertebral disc after, put into intervertebral space with the reamer of different width, rotatory reamer in intervertebral space scrapes with the help of the shearing force of reamer with the inner cartilage end plate of intervertebral space, whole operation under looking directly. Meanwhile, the depth of the reamer into the intervertebral space can be used as a reference for selecting a fusion cage with a proper length.
The conventional open and minimally invasive fusion operations are operated under direct vision when the reamer is used for treating the intervertebral space, whether the intervertebral disc is cleaned up or not can be clearly seen in the operation, and the operation depth can be well controlled. The percutaneous endoscopic fusion surgery is different from other surgery modes, a percutaneous surgical skin incision is only 7mm, the operation under direct vision can not be achieved by using a reamer to treat intervertebral space in the surgery, the operation is performed under the perspective, the reamer is possibly placed in a poor position in the surgery, and even the reamer is not in the intervertebral space but in a vertebral canal, so that the risk of nerve injury is increased; in addition, the depth of the reamer cannot be intuitively and accurately judged in the operation, and the length of the fusion cage cannot be selected as a reference.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the background art, the utility model adopts the following technical scheme:
an under-mirror fusion surgical reamer with a guide and a depth measurement function comprises a handle, a cutter bar fixedly connected with the handle and a cutter head arranged at the front end of the cutter bar; a first through hole is formed in the axial center of the cutter bar, a second through hole is formed in the center of the cutter head in the length direction, and the second through hole is communicated with the first through hole; the middle part of the tool bit is provided with a plurality of positioning holes which penetrate through the upper surface and the lower surface of the tool bit.
Furthermore, the first through hole and the second through hole are circular holes and concentric circles, and the diameters of the first through hole and the second through hole are 2mm-3 mm.
Furthermore, the cutter head is flat, and the front end of the cutter head is arc-shaped.
Furthermore, strip-shaped grooves are formed in the two sides of the upper surface and the lower surface of the cutter head, and the grooves extend from the front end of the cutter head to the middle of the cutter head.
Furthermore, the positioning holes are rectangular.
Furthermore, the positioning holes are arranged in the front end direction and the rear end direction of the cutter head at equal intervals.
Further, the width of the cutter head is 8mm-13 mm.
Further, the total length of the cutter bar and the cutter head is 220mm-260 mm.
Furthermore, the handle is a cylinder, and the length of the handle is 70mm-90 mm.
Compared with the prior art, the utility model has the beneficial effects that:
1) the first through hole and the second through hole form a hollow guide channel for the guide wire to pass through, so that the reamer can be quickly and accurately placed in the intervertebral space under the guidance of the guide wire.
2) The arrangement of the reamer positioning hole can display the position of the reamer head during intraoperative perspective so as to obtain the approximate depth of the intervertebral space and the approximate width of the vertebral body, and provide reference for selecting a fusion cage with proper length.
3) Due to the arrangement of the cutter head grooves, when the reamer is rotatably dug in the intervertebral space, the reamer can be rotatably dug in a more efficient and more convenient mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of an under-mirror fusion surgical reamer with guiding depth measurement according to the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is a schematic view of a cutting head of the present invention.
In the figure: 1-handle, 2-cutter bar, 3-cutter head, 21-first through hole, 31-second through hole, 32-positioning hole and 33-groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model is discussed in detail below with reference to figures 1 to 3 and specific embodiments:
the utility model relates to an external sheath tube with a reamer function, which comprises a handle 1, a cutter bar 2 fixedly connected with the handle 1 and a cutter head 3 arranged at the front end of the cutter bar 2, wherein the cutter bar 2 is fixedly connected with the handle 1; a first through hole 21 is formed in the axial center of the cutter bar 2, a second through hole 31 is formed in the center of the cutter head 3 in the length direction, and the second through hole 31 is communicated with the first through hole 21 to form a hollow guide channel for a guide wire to pass through so that the reamer can be quickly and accurately placed in the intervertebral space under the guide of the guide wire; the middle part of the cutter head 3 is provided with a plurality of positioning holes 32 which penetrate through the upper surface and the lower surface of the cutter head 3 and are used for displaying the position of the cutter head 3 during intraoperative perspective so as to obtain the approximate depth of the intervertebral space and the approximate width of the vertebral body and provide reference for selecting a fusion cage with proper length;
specifically, the first through hole 21 and the second through hole 32 are circular holes and are concentric circles, and the diameters of the first through hole 21 and the second through hole 32 are both 2mm-3mm, so that the guide wire can pass through more smoothly.
Specifically, the cutter head 3 is flat, and the front end of the cutter head is arc-shaped, so that the reamer can enter the body more easily; the middle part of the cutter head 3 is provided with a plurality of positioning holes 32, preferably, the positioning holes 32 are rectangular, so that the depth of the intervertebral space can be observed more easily in a perspective view, and the four corners of the positioning holes 32 are provided with round corners, so that surrounding tissues are not easy to be damaged; preferably, three positioning holes 32 are arranged at equal intervals along the front-back direction of the cutter head 3 to fully observe the depth of the intervertebral space; the width of the cutter head 3 is 8mm-13mm, so that the rotary digging can be more effectively carried out.
Specifically, the two sides of the upper surface and the lower surface of the cutter head 3 are both provided with strip-shaped grooves 33, and the grooves 33 extend from the front end of the cutter head 3 to the middle part of the cutter head 3, so that when the reamer is rotatably rotated in the intervertebral space, the rotary rotation can be realized more efficiently and more conveniently; preferably, the recess 33 is circular in shape, making the reamer easier to process.
Specifically, the handle 1 is a cylinder, the length of the handle is 70mm-90mm, the handle is convenient to grasp, and the rod-shaped handle 1 can be operated by a single hand to rotate during rotary digging, so that rotary digging of the tool bit 3 is realized; the handle 1 is vertical to the cutter bar 2, and a through hole is formed in the middle of the handle 1 in the radial direction and used for enabling the cutter bar 2 to penetrate through and be fixed; the two ends of the handle 1 are spherical, so that the hands are not injured when being gripped.
Specifically, the total length of the cutter bar 2 and the cutter head 3 is 220mm-260mm, when the reamer is too long in the operation, the length left outside the body is too long to affect other operations of the operation, and when the reamer is too short, the reamer cannot extend into the intervertebral space and cannot be rotationally rotated.
The utility model can be applied to fusion operation under endoscope, and the specific working process is as follows:
firstly, a guide wire sequentially passes through the second through hole 32 and the first through hole 21, the device is quickly and accurately placed into the intervertebral space under the guidance of the guide wire, the cutter head 3 is operated by the rotating handle 1 to carry out rotary digging, and in the rotary digging process, the position of the positioning hole 32 on the cutter head 3 is observed in a perspective mode through an X-ray machine, so that the approximate depth of the intervertebral space and the approximate width of the vertebral body are judged, and reference is provided for the selection of the length of the fusion cage.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (9)
1. The utility model provides a but area guide depth measurement's under mirror fusion surgery reamer which characterized in that: including the handle, with handle fixed connection's cutter arbor, set up the tool bit at the cutter arbor front end, wherein:
a first through hole is formed in the axial center of the cutter bar, a second through hole is formed in the center of the cutter head in the length direction, and the second through hole is communicated with the first through hole; the middle part of the tool bit is provided with a plurality of positioning holes which penetrate through the upper surface and the lower surface of the tool bit.
2. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the first through hole and the second through hole are circular holes and concentric circles, and the diameter of the first through hole is 2mm-3 mm.
3. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the tool bit is flat, and the front end of the tool bit is arc-shaped.
4. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the upper surface and the lower surface of the cutter head are both provided with strip-shaped grooves, and the grooves extend from the front end of the cutter head to the middle part of the cutter head.
5. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the positioning hole is rectangular.
6. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the positioning holes are arranged at least three in the front-rear end direction of the tool bit at equal intervals.
7. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the width of the cutter head is 8mm-13 mm.
8. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the total length of the cutter bar and the cutter head is 220mm-260 mm.
9. The under-mirror fusion surgical reamer with guiding depth measurement according to claim 1, wherein: the handle is a cylinder, and the length of the handle is 70mm-90 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487402.4U CN215306399U (en) | 2021-03-08 | 2021-03-08 | Under-mirror fusion surgical reamer with guiding and depth measuring functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487402.4U CN215306399U (en) | 2021-03-08 | 2021-03-08 | Under-mirror fusion surgical reamer with guiding and depth measuring functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215306399U true CN215306399U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120487402.4U Active CN215306399U (en) | 2021-03-08 | 2021-03-08 | Under-mirror fusion surgical reamer with guiding and depth measuring functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215306399U (en) |
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2021
- 2021-03-08 CN CN202120487402.4U patent/CN215306399U/en active Active
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