CN214595951U - Annular bone extractor - Google Patents
Annular bone extractor Download PDFInfo
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- CN214595951U CN214595951U CN202023179430.4U CN202023179430U CN214595951U CN 214595951 U CN214595951 U CN 214595951U CN 202023179430 U CN202023179430 U CN 202023179430U CN 214595951 U CN214595951 U CN 214595951U
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- driving motor
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Abstract
The utility model discloses an annular bone extractor, which comprises a hollow annular cutting cylinder and a positioning needle arranged inside the annular cutting cylinder, wherein the annular bone extractor is connected with a driving motor through a connecting part; the end part of the annular cutting cylinder is annularly provided with cutting teeth; the wall of the middle part of the circular cutting cylinder is provided with a plurality of chip removing holes, and the inner wall of the lower part of the circular cutting cylinder is provided with a spiral chip guide strip. The utility model provides a get bone object has easy and simple to handle, the chip removal is effectual, location effect is good, can effectively protect the infrabony tissue not receive advantages such as damage.
Description
Technical Field
The utility model relates to the technical field of medical auxiliary equipment, particularly to bone ware is got to annular.
Background
When bone extraction is performed, a bone extractor is usually required. The existing bone extractor comprises a bone extracting outer cylinder with cutting teeth and a handle part. The bone pieces are cut by rotating the outer cylinder, but the thickness of the cut bone pieces cannot be well positioned. When bone extraction is performed in a region with an important anatomical structure in a deep part, excessive bone extraction easily damages the important anatomical structure, and bone extraction is insufficient, and bone extraction is required again. In addition, the saw teeth produce bone chips during cutting, which, if not properly removed, would have an adverse effect on the operation.
The prior art also has some technical solutions for improving the above-mentioned drawbacks. For example, in the utility model with application number 201220094081.2, a machine bone taking device with a stopping device is disclosed, when in use, because the stopping cylinder can be designed into different thicknesses to be placed in the bone taking cylinder, the cutting teeth at the front end of the bone taking cylinder cut and grind cortical bone and cancellous bone, which is beneficial to controlling the bone taking amount; meanwhile, the stop function of the stop cylinder is utilized to protect important anatomical structures such as deep nerve vessels and the like. Also, as disclosed in the utility model with application number 201721023374.0, a drill bit for taking out bone comprises a handle part, a columnar bone storage part and a drilling part; the columnar storage part is of a hollow structure and is provided with a chip removal hole, and the chip removal hole is beneficial to discharging bone chips generated in the process of drilling the bone by the bone taking drill.
However, the bone extractor provided in the prior art is not ideal in the aspects of protecting the safety of the infrabony tissue, the chip removal performance, the positioning performance and the like.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a bone taking device which is simple and convenient to operate, has good chip removal effect and good positioning effect and can effectively protect the tissues under bones from being damaged.
The utility model provides a technical scheme that technical problem adopted is: an annular bone extractor comprises a hollow annular cutting cylinder and a positioning needle arranged in the annular cutting cylinder, wherein the annular bone extractor is connected with a driving motor through a connecting part; the end part of the annular cutting cylinder is annularly provided with cutting teeth; the wall of the middle part of the circular cutting cylinder is provided with a plurality of chip removing holes, and the inner wall of the lower part of the circular cutting cylinder is provided with a spiral chip guide strip.
Further, the pressure sensor is used for controlling the rotating speed of the driving motor; the higher the pressure applied to the pressure sensor is, the higher the rotating speed of the driving motor is; the smaller the pressure applied to the pressure sensor is, the smaller the rotation speed of the driving motor is. The pressure sensor can transmit the received force to the driving motor through the connecting wire, the sensed force is converted into a corresponding voltage value through the driving motor, and the rotating speed is increased or reduced through the voltage value, so that the pressure of an operator on the pressure sensor is in direct proportion to the rotating speed of a motor in the driving motor.
Furthermore, the length of the positioning needle is greater than that of the circular cutting cylinder, the end part of the positioning needle is in a pointed cone shape, and the distance that the end part of the positioning needle protrudes out of the circular cutting cylinder is 0.5-0.8 mm. If the positioning needle protrudes too much, the cutting teeth can not be contacted with the bone, and the cutting effect is further influenced; in addition, due to the presence of unevenness, curvature and the like on the surface of the skeleton, if the number of parts of the positioning pin positioning columns protruding from the circular cutting cylinder is too small, the positioning is also failed.
Furthermore, the spiral starting point of the spiral chip guide strip is positioned above the cutting teeth, and the spiral terminal point of the spiral chip guide strip is positioned below the chip removal hole.
Furthermore, a chip guide groove capable of containing bone chips is formed between the spiral chip guide strip and the inner wall of the circular cutting cylinder.
During the use, install connecting portion on driving motor, link to each other connecting wire and driving motor electrical property, place the position that needs the cutting in with the pilot pin, and pierce the pilot pin in waiting to cut the skin tissue of position, open driving motor, the user pushes down the bone object of getting hard, pressure sensors receives behind the pressure, it is rotatory to make driving motor drive ring section of thick bamboo, ring section of thick bamboo tip incised skin tissue, and further cut the bone piece, when the cutting is accomplished or when meetting the unexpected condition and need stopping, the user removes pressure, driving motor stop work immediately, can effectively protect the tissue under the bone not receive the damage. Bone chips generated in the bone cutting process are collected in chip guide grooves of the spiral chip guide strips and are discharged from the chip discharge holes along the spiral chip guide strips.
The utility model has the advantages that: compared with the prior art, the utility model provides an annular gets bone object has following several advantages:
1) in the utility model, the positioning needle is arranged in the circular cutting cylinder, so as to play the role of positioning and fixing during cutting, and improve the accuracy of bone extraction;
2) the utility model is provided with the pressure sensor, and the rotating speed of the driving motor is controlled by pressure, so that the bone extractor is safer and more intelligent to use, and the bone tissue is protected from being damaged;
3) the utility model discloses in, through set up heliciform conducting chip strip and chip removal hole at circular cutting section of thick bamboo inner wall, make the bone bits that get the production in the bone ware cutting process in time collect and get rid of.
Drawings
Fig. 1 is a schematic sectional structure view of the bone extractor provided in the present invention.
Fig. 2 is an external structural schematic view of the bone extractor provided in the present invention.
Wherein, 1-connecting part; 2-a pressure sensor; 3-a positioning needle; 4-chip removal holes; 5-chip guide grooves; 6-helical chip guide strip; 7-ring cutting the cylinder; 8-cutting teeth; 9-connecting lines.
Detailed Description
The invention is further illustrated by the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1-2, an annular bone extractor comprises a hollow annular cutting cylinder 7 and a positioning pin 3 arranged inside the annular cutting cylinder 7, the annular bone extractor is connected with a driving motor through a connecting part 1, a pressure sensor 2 is arranged between the connecting part 1 and the annular cutting cylinder 7, and the pressure sensor 2 is electrically connected with the driving motor (not shown) through a connecting wire 9; the end part of the circular cutting cylinder 7 is annularly provided with cutting teeth 8; the wall of the middle part of the circular cutting cylinder 7 is provided with a plurality of chip removing holes 4, and the inner wall of the lower part of the circular cutting cylinder 7 is provided with a spiral chip guide strip 6.
The pressure sensor 2 is used for controlling the rotating speed of the driving motor; the higher the pressure applied to the pressure sensor 2 is, the higher the rotating speed of the driving motor is; the smaller the pressure applied to the pressure sensor 2, the smaller the rotational speed of the drive motor. The pressure sensor 2 can transmit the received force to the driving motor through the connecting wire 9, the sensed force is converted into a corresponding voltage value through the driving motor, and the rotating speed is increased or reduced through the voltage value, so that the pressure of an operator on the pressure sensor 2 is in direct proportion to the rotating speed of a motor in the driving motor. Thereby the use of the bone extractor is safer and more intelligent, and the bone extractor is more favorable for protecting the tissue under the bone from being damaged.
The length of the positioning needle 3 is greater than that of the circular cutting cylinder 7, the end part of the positioning needle 3 is in a pointed cone shape, and the distance that the end part of the positioning needle 3 protrudes out of the circular cutting cylinder 7 is 0.5-0.8 mm. If the positioning needle 3 protrudes too much, the cutting teeth 8 cannot contact with the bone, and the cutting effect is further affected; in addition, if the number of the positioning pins 3 protruding from the ring cutting cylinder 7 is too small due to the unevenness, curvature, or the like of the surface of the bone, the positioning will also fail. Through set up pilot pin 3 in circular cutting section of thick bamboo 7, play location and fixed action when the cutting, make the accuracy of getting the bone improve.
The spiral starting point of the spiral chip guide strip 6 is positioned above the cutting teeth 8, and the spiral end point of the spiral chip guide strip 6 is positioned below the chip removal hole 4. A chip guide groove 5 capable of containing bone chips is formed between the spiral chip guide strip 6 and the inner wall of the circular cutting cylinder 7. The spiral chip guide strip 6 and the chip removal hole 4 are arranged on the inner wall of the circular cutting cylinder 7, so that bone chips generated in the cutting process of the bone extractor can be collected and removed in time.
During the use, install connecting portion 1 on driving motor, link to each other connecting wire 9 and driving motor electrical property, place locating pin 3 in the position that needs the cutting, and pierce locating pin 3 in the skin tissue of waiting to cut the position, open driving motor, the operator pushes down the bone object hard, pressure sensors 2 receives the pressure after, make driving motor drive ring section of thick bamboo 7 rotatory, 7 tip incised teeth 8 of ring section of thick bamboo cut the skin tissue, and further cut the bone piece, when the cutting is accomplished or meets the unexpected condition and need stop, the operator removes pressure, driving motor stops work immediately, can effectively protect not damaged by the tissue under the bone. Bone chips generated in the bone cutting process are collected in the chip guide grooves 5 of the spiral chip guide strips 6 and are discharged out along the spiral chip guide strips 6 to the chip discharge holes 4.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (5)
1. An annular bone extractor which is characterized in that: the annular bone extractor comprises a hollow annular cutting cylinder and a positioning needle arranged in the annular cutting cylinder, the annular bone extractor is connected with a driving motor through a connecting part, a pressure sensor is arranged between the connecting part and the annular cutting cylinder, and the pressure sensor is electrically connected with the driving motor through a connecting wire; the end part of the annular cutting cylinder is annularly provided with cutting teeth; the wall of the middle part of the circular cutting cylinder is provided with a plurality of chip removing holes, and the inner wall of the lower part of the circular cutting cylinder is provided with a spiral chip guide strip.
2. The annular bone harvester of claim 1, wherein: the pressure sensor is used for controlling the rotating speed of the driving motor; the higher the pressure applied to the pressure sensor is, the higher the rotating speed of the driving motor is; the smaller the pressure applied to the pressure sensor is, the smaller the rotation speed of the driving motor is.
3. The annular bone harvester of claim 1, wherein: the length of the positioning needle is greater than that of the circular cutting cylinder, the end part of the positioning needle is in a pointed cone shape, and the distance between the end part of the positioning needle and the circular cutting cylinder is 0.5-0.8 mm.
4. The annular bone harvester of claim 1, wherein: the spiral starting point of the spiral chip guide strip is positioned above the cutting teeth, and the spiral end point of the spiral chip guide strip is positioned below the chip removal hole.
5. An annular bone harvester according to claim 1 or 4, characterized in that: a chip guide groove capable of containing bone chips is formed between the spiral chip guide strip and the inner wall of the circular cutting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023179430.4U CN214595951U (en) | 2020-12-25 | 2020-12-25 | Annular bone extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023179430.4U CN214595951U (en) | 2020-12-25 | 2020-12-25 | Annular bone extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214595951U true CN214595951U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023179430.4U Active CN214595951U (en) | 2020-12-25 | 2020-12-25 | Annular bone extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214595951U (en) |
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2020
- 2020-12-25 CN CN202023179430.4U patent/CN214595951U/en active Active
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