CN215129545U - Reamer for orthopedic surgery - Google Patents
Reamer for orthopedic surgery Download PDFInfo
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- CN215129545U CN215129545U CN202121143412.2U CN202121143412U CN215129545U CN 215129545 U CN215129545 U CN 215129545U CN 202121143412 U CN202121143412 U CN 202121143412U CN 215129545 U CN215129545 U CN 215129545U
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- hinge
- reamer
- cutter head
- tool bit
- reaming
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Abstract
The application relates to a reamer for orthopedic surgery, which belongs to the technical field of medical instruments. The cutter comprises a hinge rod and a cutter head connected to the end of the hinge rod, wherein the side, far away from the hinge rod, of the cutter head is an arc-shaped edge, the peripheral side of the cutter head is provided with a cutting edge, and the cutter head is provided with a hinge hole in the direction perpendicular to the plane of the cutter head. This application scheme is through setting up the arc limit and seting up the reamed hole, makes partly tissue and blood pass through from the reamed hole, has reduced the resistance of tool bit at the rotation in-process, has guaranteed simultaneously that the reaming of tool bit to human tissue is cut to be favorable to operating personnel to control and operate the reamer, improve the accuracy of operating the reamer, and then can reduce the operation time, improve the operation effect simultaneously.
Description
Technical Field
The application relates to the field of medical equipment, especially, relate to a reamer for orthopedic surgery.
Background
The bone reamer is mainly used for reaming the drilled bone in the orthopedic operation. The reamer mainly comprises a hinge rod and a cutter head, wherein the cutter head is connected to one end of the hinge rod, the cutter head is stretched into the spine through endoscope observation during operation, then the hinge rod is rotated, and the intervertebral cartilage end plate is treated by the cutter head.
The patent with publication number CN211131271U discloses a full-visual reamer for under-mirror fusion, which comprises a hinge rod, a handle and a reamer, wherein the handle is arranged at the rear part of the hinge rod, the reamer is arranged at the front end of the hinge rod, the hinge rod is of a hollow structure and is internally provided with a lead, the rear end of the lead is connected with an intervertebral foramen mirror or a display, and the front end and the rear end of the lead are connected with an endoscope. The utility model has the advantages that: the full visual reamer is hollow, an endoscope is placed through the inner diameter of the reamer, and the cartilage end plate is processed under full visual guidance.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the cutter head is planar, and when the cutter head is rotated, blood and tissues in the spine can increase the resistance to rotation of the hinge rod, so that the force for operating the reamer cannot be accurately controlled by an operator, and the operation efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
In order to help improve the precision that operating personnel operated the reamer, this application provides a reamer for orthopedic operation.
The application provides a reamer for orthopedic surgery adopts following technical scheme:
the utility model provides a reamer for orthopedic operation, includes hinge bar and connects the tool bit at the hinge bar tip, the side that the hinge bar was kept away from to the tool bit sets up to the arc limit, the week side of tool bit is provided with the cutting edge, the reaming has been seted up along the planar direction of perpendicular to tool bit to the tool bit.
Through adopting above-mentioned technical scheme, set up the arc limit and set up the reaming, some tissue and blood can be followed the reaming and pass through, have reduced the resistance of tool bit at the rotation in-process, have guaranteed simultaneously that the reaming of tool bit to human tissue is cut to be favorable to operating personnel to control and operate the reamer, improve the accuracy of operating the reamer, and then can reduce the operation time, improve the operation effect simultaneously.
Optionally, the number of the reaming holes is one, and the reaming hole is formed in the center of the cutter head.
Through adopting above-mentioned technical scheme, when the reaming is organized, make some tissue pass through from the center of tool bit to effectively reduce the resistance that the tool bit received, improve the convenience of operating the reamer.
Optionally, the number of the hinge holes is two, the centers of the two hinge holes are located on the central axis of the cutter head, and the two hinge holes are arranged at intervals along the length direction of the hinge rod.
Through adopting above-mentioned technical scheme, such setting can reduce the destruction to tool bit structural stability, reduces the phenomenon that the tipping appears.
Optionally, the number of the hinge holes is three, the three hinge holes are arranged in an array, the circle center of one hinge hole is arranged on the central axis of the hinge rod, and the other two hinge holes are symmetrically arranged with the central axis of the hinge rod.
Through adopting above-mentioned technical scheme, the reamed hole is in large quantity, and the diameter of corresponding reamed hole is less, has further guaranteed the stability of tool bit structure to can choose this kind of reamer for use in the higher tissue of hardness according to the actual operation condition, ensure the normal use of reamer when improving the operation reamer convenience.
Optionally, the inner side edge of the reaming hole is provided with a cutting edge.
Through adopting above-mentioned technical scheme, make the inboard side of reamed hole equally can cut some tissues, further reduced the resistance of tool bit in rotatory in-process, improved the precision that operating personnel operated the reamer.
Optionally, the minimum distance between the side edge of the reaming hole and the blade edge is not less than 1.5 mm.
Through adopting above-mentioned technical scheme, such setting up makes the cutting edge have sufficient structural strength, reduces the phenomenon that appears the sword and tipping, and then reduces medical malpractice's emergence.
Optionally, the hinge rod is arranged in a hollow manner, and an endoscope hole is formed in one end of the hinge rod close to the cutter head.
Through adopting above-mentioned technical scheme, the endoscope can stretch into and stretch out from endoscope hole department along the hinge bar to make things convenient for operating personnel to observe human inside condition through the endoscope, so that operating personnel can handle human internal tissue more meticulously.
Optionally, the tool bit is mainly made of 20Cr13, 30Cr13, 40Cr13, 32Cr13Mo and 05Cr17Ni14CuNb materials.
Through adopting above-mentioned technical scheme, the tool bit hardness of this kind of material preparation is high, and is corrosion-resistant, can improve the structural strength of tool bit, guarantees the stability of tool bit structure.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the reamer has the advantages that the arc-shaped edge is arranged and the reaming hole is formed, so that part of tissues and blood can pass through the reaming hole, the resistance of the cutter head in the rotating process is reduced, and the reaming of the cutter head on human tissues is ensured, so that the reamer is controlled and operated by an operator, the accuracy of the reamer is improved, the operation effect can be improved, and the operation time is reduced;
2. the reaming holes are arranged in one, so that when the tissue is reamed, a part of the tissue can pass through the center of the cutter head, the resistance on the cutter head is effectively reduced, and the convenience for operating the reamer is improved;
3. the two reaming holes are arranged, so that the damage to the stability of the tool bit structure can be reduced, and the phenomenon of edge breakage is reduced;
4. the reaming sets up to three, and reaming quantity is many, and the diameter of corresponding reaming is less, has further guaranteed the stability of tool bit structure to can choose for use this kind of reamer in the higher tissue of hardness according to the actual operation condition, ensure the normal use of reamer when improving the operation reamer convenience.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.
Fig. 2 is a schematic view mainly showing reaming in embodiment 2 of the present application.
Fig. 3 is a schematic view mainly showing reaming in embodiment 3 of the present application. .
Description of reference numerals: 1. a hinge rod; 11. an endoscopic hole; 2. a cutter head; 21. an arc-shaped edge; 3. a handle; 4. a blade; 5. and (5) reaming.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a reamer for orthopedic surgery.
Example 1
Referring to fig. 1, the reamer comprises a hinge rod 1 and a cutter head 2 fixed at one end of the hinge rod 1, wherein a handle 3 is arranged at one end, away from the cutter head 2, of the hinge rod 1, the hinge rod 1 is a hollow cylinder, a through hole communicated with the hinge rod 1 is formed in the handle 3, the cutter head 2 is planar, and an endoscope hole 11 radially penetrating through the hinge rod 1 is formed in the joint of the hinge rod 1 and the cutter head 2. The endoscope can penetrate into the hinge rod 1 from the handle 3 and penetrate out from the endoscope hole 11, so that the operator can conveniently observe the internal tissues of the human body through the endoscope and perform the operation.
Wherein, the one side that tool bit 2 kept away from hinge arm 1 sets up to arc limit 21, and arc limit 21 is the semicircle setting, and the centre of a circle of arc limit 21 is towards the one side that is close to hinge arm 1 and is located the center axis of hinge arm 1.
Meanwhile, the peripheral side of the cutter head 2 is provided with a cutting edge 4, and the center of the cutter head 2 is provided with a reaming hole 5 along the direction vertical to the plane of the cutter head 2. In this embodiment, the shape of the hinge hole 5 is the same as that of the cutter head 2, and the distances between the inner side edge of the hinge hole 5 and the peripheral side edge of the cutter head 2 are all the same.
In addition, the edge 4 is also annularly arranged on the inner side edge of the reaming hole 5, so that when the cutter head 2 is rotated, the edge 4 on the side edge of the reaming hole 5 and the edge 4 on the side edge of the cutter head 2 can cut human tissues simultaneously, and the cutting effect is improved.
In order to ensure that the cutter head 2 has sufficient structural strength, the distance between the inner side edge of the reaming 5 (excluding the width of the cutting edge 4 at the reaming 5) and the cutting edge 4 of the cutter head 2 is not less than 1.5 mm. Meanwhile, the tool bit 2 is mainly made of 20Cr13, 30Cr13, 40Cr13, 32Cr13Mo and 05Cr17Ni14CuNb materials, the hardness of the 20Cr13 material is 42-48HRC, the hardness of the 30Cr13 material is 48-53HRC, the hardness of the 40Cr13 material is 50-56HRC, the hardness of the 32Cr13Mo material is 48-56HRC, and the hardness of the 05Cr17Ni14CuNb material is 40-45 HRC. The material of this type has higher hardness and corrosion resistance, and can ensure the normal use of the cutter head 2.
The implementation principle of the reamer for orthopedic surgery in the embodiment of the application is as follows: during operation, an operator firstly uses a scalpel to perform minimally invasive operation on the back of a patient, inserts a working sleeve, then stretches a cutter head 2 and a hinge rod 1 into the body of the patient from the working sleeve, then passes an endoscope through the hinge rod 1 and stretches out from an endoscope hole 11, the operator moves the cutter head 2 to a preset position based on the observation condition of the endoscope, then rotates a handle 3 to enable the cutter head 2 to synchronously rotate, and the cutting edge 4 on the side edge of the cutter head 2 and the cutting edge 4 on the inner side edge of a hinge hole 5 can cut off human tissues to perform an operation process.
In this scheme, the reaming 5 of the arc limit 21 and the seting up that sets up, some tissue and blood can be followed reaming 5 and passed through, have reduced tool bit 2 and have rotated the resistance of in-process, have guaranteed simultaneously that tool bit 2 cuts the reaming of human tissue to be favorable to operating personnel to control and operate the reamer, improve the accuracy of operating the reamer, and then improve operation effect and operation efficiency.
Example 2
The embodiment is different from the embodiment 1 in that the holes of the hinge holes 5 are different, and referring to fig. 2, in the embodiment, two hinge holes 5 are provided, and the two hinge holes 5 are arranged at intervals along the direction of the central axis of the hinge rod 1.
Meanwhile, the minimum distance between the inner side edge of one of the hinge holes 5 and the inner side edge of the other hinge hole 5 is not less than 2mm, and the minimum distance between the inner side edge of the hinge hole 5 and the cutting edge 4 of the cutter head 2 is not less than 1.5mm, so that the cutter head 2 has enough structural strength, and the normal use of the cutter head 2 is ensured.
In this embodiment, the shape of the hinge hole 5 is set to be circular, and in other embodiments, the shape of the hinge hole 5 may also be set to be square, diamond, irregular, or the like, which is not limited herein. In addition, the inner sides of the two hinge holes 5 are provided with cutting edges 4 to improve cutting efficiency.
The two reaming holes 5 are arranged in the embodiment, so that the damage to the structural stability of the cutter head 2 can be reduced, and the phenomenon of tipping is reduced.
Example 3
The difference between this embodiment and embodiment 1 is that the hole-opening modes of the hinge holes 5 are different, referring to fig. 3, in this embodiment, the number of the hinge holes 5 is three, the three hinge holes 5 are arranged in a circumferential array, one hinge hole 5 is arranged near the arc-shaped edge 21, the center of the hinge hole 5 is arranged on the central axis of the hinge rod 1, the other two hinge holes 5 are arranged on one side of the cutter head 2 near the hinge rod 1, and the two hinge holes 5 are symmetrically arranged with the central axis of the hinge rod 1.
The minimum distance between the inner side edges of adjacent hinge holes 5 is not less than 1.5mm, and meanwhile, the minimum distance between the inner side edges of the hinge holes 5 and the cutting edge 4 of the cutter head 2 is not less than 1.5 mm. In addition, the inner side edge of the reaming 5 is also provided with a cutting edge 4 to improve the cutting efficiency of the cutter head 2.
The reaming 5 is more in this scheme, and corresponding reaming 5's diameter is less, has further reduced the destruction to tool bit 2 structure to guaranteed the stability of 2 structures of tool bit, and then can choose this kind of reamer for use in the higher tissue of hardness according to the actual operation condition, ensure the normal use of reamer when improving the operation reamer convenience.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a reamer for orthopedic operation, includes hinge bar (1) and connects tool bit (2) at hinge bar (1) tip, its characterized in that: the side that hinge arm (1) was kept away from in tool bit (2) sets up to arc limit (21), the week side of tool bit (2) is provided with cutting edge (4), reaming (5) have been seted up along perpendicular to tool bit (2) planar direction in tool bit (2).
2. The reamer for orthopedic surgery of claim 1 wherein: the number of the hinge holes (5) is one, and the hinge holes (5) are formed in the center of the cutter head (2).
3. The reamer for orthopedic surgery of claim 1 wherein: the number of the hinge holes (5) is two, the centers of the two hinge holes (5) are located on the central axis of the cutter head (2), and the two hinge holes (5) are arranged at intervals along the length direction of the hinge rod (1).
4. The reamer for orthopedic surgery of claim 1 wherein: the number of the hinge holes (5) is three, the three hinge holes (5) are arranged in an array mode, the circle center of one hinge hole (5) is arranged on the central axis of the hinge rod (1), and the other two hinge holes (5) are symmetrically arranged with the central axis of the hinge rod (1).
5. The reamer for orthopedic surgery according to any one of claims 2 to 4, wherein: and a cutting edge (4) is arranged on the inner side edge of the reaming hole (5).
6. The reamer for orthopedic surgery according to any one of claims 2 to 4, wherein: the minimum distance between the side edge of the reaming hole (5) and the cutting edge (4) is not less than 1.5 mm.
7. The reamer for orthopedic surgery of claim 1 wherein: the hinge rod (1) is arranged in a hollow mode, and an endoscope hole (11) is formed in one end, close to the cutter head (2), of the hinge rod (1).
8. The reamer for orthopedic surgery of claim 1 wherein: the tool bit (2) is mainly made of 20Cr13, 30Cr13, 40Cr13, 32Cr13Mo and 05Cr17Ni14CuNb materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121143412.2U CN215129545U (en) | 2021-05-25 | 2021-05-25 | Reamer for orthopedic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121143412.2U CN215129545U (en) | 2021-05-25 | 2021-05-25 | Reamer for orthopedic surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215129545U true CN215129545U (en) | 2021-12-14 |
Family
ID=79372038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121143412.2U Active CN215129545U (en) | 2021-05-25 | 2021-05-25 | Reamer for orthopedic surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215129545U (en) |
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2021
- 2021-05-25 CN CN202121143412.2U patent/CN215129545U/en active Active
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