CN221105934U - Otology grinds and bores - Google Patents
Otology grinds and bores Download PDFInfo
- Publication number
- CN221105934U CN221105934U CN202321923364.8U CN202321923364U CN221105934U CN 221105934 U CN221105934 U CN 221105934U CN 202321923364 U CN202321923364 U CN 202321923364U CN 221105934 U CN221105934 U CN 221105934U
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- CN
- China
- Prior art keywords
- cutter bar
- inner cutter
- outer cutter
- abrasive drill
- otology
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 2
- 238000007373 indentation Methods 0.000 claims 2
- 238000005553 drilling Methods 0.000 abstract 4
- 230000003685 thermal hair damage Effects 0.000 description 7
- 230000020169 heat generation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000000451 tissue damage Effects 0.000 description 3
- 231100000827 tissue damage Toxicity 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 210000000959 ear middle Anatomy 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model discloses an otology abrasive drill, belongs to the technical field of medical equipment, and aims to solve the problems that more friction heat is generated in the abrasive drill operation and instability is caused by rotation of a cutter bar in the prior art. The drilling machine comprises a drilling grinding assembly, wherein the drilling grinding assembly comprises an inner cutter bar, the front end of the inner cutter bar is connected with a drilling grinding bit, and the tail end of the inner cutter bar is connected with an inner cutter bar handle; an outer cutter bar is sleeved outside the inner cutter bar, and a protection wire is wound outside the outer cutter bar; an outer cutter bar tail is formed at the tail end of the outer cutter bar and is embedded in the inner cutter bar handle; the tail ends of the inner cutter bar and the outer cutter bar extend into the handheld piece and are connected with the handheld piece. The otology abrasive drill can be better used for the operation work in the auditory canal, and has the advantages of high safety coefficient, stable operation and small vibration.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to an otology abrasive drill.
Background
In the microearthquake operation, a medical abrasive drill is used for grinding diseased bone tissues of the middle ear and the inner ear. The general medical abrasive drill comprises a grinding head, an inner cutter bar connected with the grinding head and an outer cutter bar for providing support for the inner cutter bar, wherein the abrasive drill is connected with a power handle during operation, and the power handle is used for providing grinding power for the abrasive drill.
In order to ensure the safety of the operation, the abrasive drill is generally required to generate less heat and vibrate, because the nerves in the ear are dense, the cavity is complex to bend, if the abrasive drill generates a large amount of heat in the working process, the sensitive nerves and tissues can be thermally damaged, and the irregular vibration of the abrasive drill can cause unnecessary damage to the normal tissues in the auditory canal.
To the problem of thermal damage, the patent application number 202021868526.9 provides a medical scalable bistrique and medical grinding cutter, and its surface winding at the core bar pillar has the guard wire, and this guard wire is as grinding and boring the buffering that rubs heat generation, can reduce thermal damage risk. However, there is room for improvement in terms of reducing thermal damage, and there is a continuing need for improvement in terms of reducing abrasive vibration.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model provides the otology abrasive drill which is safe, reliable and high in stability.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an otology abrasive drill, which comprises:
The grinding drill assembly comprises an inner cutter bar, the front end of the inner cutter bar is connected with a grinding bit, and the tail end of the inner cutter bar is connected with an inner cutter bar handle; an outer cutter bar is sleeved outside the inner cutter bar, and a protection wire is wound outside the outer cutter bar; an outer cutter bar tail is formed at the tail end of the outer cutter bar and is embedded in the inner cutter bar handle;
The tail ends of the inner cutter bar and the outer cutter bar extend into the handheld piece and are connected with the handheld piece.
The technical effect of adopting above-mentioned scheme is: the inner cutter bar is connected with the motor of the power handle through the hand piece, so that power required by cutting is provided for the grinding bit in operation; meanwhile, the protection wire wound outside the outer cutter bar can be used as a buffer for heat generation by rotating friction of the inner cutter bar, so that the risk of thermal damage is reduced.
Alternatively or preferably, the outer surface of the curved portion of the inner cutter bar is provided with a protective sleeve, and the protective sleeve is located between the inner cutter bar and the outer cutter bar.
The technical effect of adopting above-mentioned scheme is: the inner cutter bar bending section is provided with the protective sleeve, so that on one hand, the inner cutter bar and the outer cutter bar can be prevented from being directly collided and rubbed to generate a large amount of friction heat; on the other hand, the cutter bar can also be used as a buffer for heat generation by rotating friction of the inner cutter bar, so that the risk of thermal damage is further reduced.
Optionally or preferably, a sealing sleeve is arranged on the outer surface of the joint of the inner cutter bar and the grinding bit, and the front end of the outer cutter bar is connected with the sealing sleeve.
The technical effect of adopting the technical scheme is as follows: the sealing sleeve is arranged on the outer surface of the joint of the inner cutter bar and the grinding bit, so that chips generated by grinding can be prevented from entering the grinding bit, and damage to the cutter bar is avoided.
Optionally or preferably, an anti-slip spring is arranged between the hand piece and the outer cutter bar, and the anti-slip spring is used for avoiding collision between the inner cutter bar and the outer cutter bar during operation.
The technical effect of adopting the technical scheme is as follows: through being provided with anti-slip spring between handpiece and outer cutter arbor to prevent crooked interior cutter arbor and collide outer cutter arbor, make outer cutter arbor rotate relative handpiece, thereby avoid grinding the instability of boring during operation, cause unnecessary tissue damage.
Optionally or preferably, a seal assembly is provided in the handpiece on a side thereof adjacent the front end, the seal assembly being adapted to block external liquid.
Alternatively or preferably, the seal assembly comprises a waterproof ring and an O-ring seal.
Optionally or preferably, a plurality of notches are circumferentially arranged at the tail end of the hand piece, and the notches are used for clamping the power handle.
Based on the technical scheme, the utility model at least has the following technical effects:
(1) According to the otology abrasive drill, the inner cutter bar, the outer cutter bar, the abrasive drill bit and the hand piece are arranged, and the inner cutter bar is connected with the motor of the power handle through the hand piece, so that power required by cutting is provided for the abrasive drill bit in an operation;
(2) The protection wire wound outside the outer cutter bar can be used as a buffer for heat generation by rotating friction of the inner cutter bar, so that the risk of thermal damage is reduced;
(3) The inner cutter bar bending section is provided with the protective sleeve, so that on one hand, the inner cutter bar and the outer cutter bar can be prevented from being directly collided and rubbed to generate a large amount of friction heat; on the other hand, the device can also be used as a buffer for heat generation by rotating friction of the inner cutter bar, so that the risk of thermal damage is further reduced;
(4) The sealing sleeve is arranged on the outer surface of the joint of the inner cutter bar and the grinding bit, so that scraps generated by grinding can be prevented from entering the grinding bit, and damage to the cutter bar is avoided;
(5) Through being provided with anti-slip spring between handpiece and outer cutter arbor to prevent crooked interior cutter arbor and collide outer cutter arbor, make outer cutter arbor rotate relative handpiece, thereby avoid grinding the instability of boring during operation, cause unnecessary tissue damage.
Drawings
FIG. 1 is an elevation view of an ear abrasive drill of the present utility model;
FIG. 2 is a front cross-sectional view of the ear abrasive drill of the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
Fig. 4 is a partial enlarged view at B in fig. 2.
In the figure: 1. a grinding drill assembly; 10. grinding a drill bit; 11. sealing sleeve; 12. an inner cutter bar; 13. a protective sleeve; 14. an outer cutter bar; 15. a protection line; 16. an outer cutter bar tail; 17. an inner knife bar handle; 2. a hand piece; 21. an anti-slip spring; 22. a waterproof ring; 23. an O-shaped sealing ring; 24. and (5) a notch.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all of them, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present utility model without making any inventive effort are within the scope of the present utility model.
For the convenience of understanding, the "front end" refers to the end far away from the user in the use state, and the "rear end" refers to the end near the user in the use state.
[ Example ]
Referring to fig. 1 to 4, an otology abrasive drill comprises an abrasive drill assembly 1 and a hand piece 2, wherein the abrasive drill assembly 1 comprises an inner cutter bar 12, the front end of the inner cutter bar 12 is fixedly connected with an abrasive drill bit 10, the tail end of the inner cutter bar 12 is fixedly connected with an inner cutter bar handle 17, and the inner cutter bar handle 17 extends into the hand piece 2 and is fixed relative to the hand piece 2; the rod body of the inner cutter rod 12 is provided with a bending part, the outer surface of the bending part is provided with a protective sleeve 13, the outer cutter rod 14 is sleeved outside the inner cutter rod 12 and the protective sleeve 13, and the tail end of the outer cutter rod 14 is provided with an outer cutter rod tail 16.
In this embodiment, the outer cutter bar tail 16 is disposed at the extreme end of the outer cutter bar 14, and the diameter of the end face is smaller than that of the end face of the outer cutter bar 14 but larger than that of the end face of the inner cutter bar 12, and the outer cutter bar tail 16 is embedded in the inner cutter bar handle 17; the outer cutter bar tail 16 provides a buffer space between the outer cutter bar 14 and the inner cutter bar handle 17, avoiding vibration of the outer cutter bar 14 caused by direct contact of the inner cutter bar handle 17 with the outer cutter bar 14 under high-speed rotation.
In the embodiment, the protection wire 15 is wound outside the outer cutter bar 14, and the protection wire 15 can be used as a buffer for heat generation by rotating friction of the inner cutter bar 12, so that the risk of heat damage is reduced; in practical implementation, one side of the protection wire 15 may be coated with adhesive, and the protection wire 15 may be wound and fixed on the outside of the outer cutter bar 14 by means of the adhesive.
In the embodiment, a sealing sleeve 11 is arranged on the outer surface of the joint of the inner cutter bar 12 and the grinding bit 10, and the front end of the outer cutter bar 14 is connected with the sealing sleeve 11; the sealing sleeve 11 can prevent chips generated by grinding from entering the grinding drill, so that the cutter bar is prevented from being damaged.
In this embodiment, an anti-slip spring 21 is disposed between the hand piece 2 and the outer cutter bar 14, and the anti-slip spring 21 is used to prevent the curved inner cutter bar from colliding with the outer cutter bar, so that the outer cutter bar rotates relative to the hand piece, thereby avoiding instability during grinding operation and causing unnecessary tissue damage.
A sealing component is further arranged on one side, close to the front end, of the hand piece 2, and in the embodiment, the sealing component comprises a waterproof ring 22 and an O-shaped sealing ring 23; it should be noted that the location, manner and seal configuration of the seal assembly may be selected by those skilled in the art as desired for their actual operation.
In addition, a plurality of notches 24 are circumferentially arranged at the tail end of the hand piece 2, and the grinding drill can enter the auditory canal to perform operations in different directions by clamping the notches 24 at different positions into the medical power handle, so that the hand piece is suitable for more operation scenes; in this embodiment, the number of the notches 24 is four.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An otology abrasive drill, comprising:
A grinding drill assembly (1), wherein the grinding drill assembly (1) comprises an inner cutter bar (12), the front end of the inner cutter bar (12) is connected with a grinding bit (10), and the tail end of the inner cutter bar (12) is connected with an inner cutter bar handle (17); an outer cutter bar (14) is sleeved outside the inner cutter bar (12), and a protection wire (15) is wound outside the outer cutter bar (14); an outer cutter bar tail (16) is formed at the tail end of the outer cutter bar (14), and the outer cutter bar tail (16) is embedded in the inner cutter bar handle (17);
the inner cutter bar (12) and the tail end of the outer cutter bar (14) extend into the handheld piece (2) and are connected with the handheld piece (2).
2. The ear abrasive drill according to claim 1, characterized in that the outer surface of the curved portion of the inner cutter bar (12) is provided with a protective sleeve (13), and that the protective sleeve (13) is located between the inner cutter bar (12) and the outer cutter bar (14).
3. An otology abrasive drill according to claim 2, characterized in that the outer surface of the junction of the inner cutter bar (12) and the abrasive drill bit (10) is provided with a sealing sleeve (11), the front end of the outer cutter bar (14) being connected to the sealing sleeve (11).
4. An otologic abrasive drill according to claim 3, characterized in that an anti-slip spring (21) is arranged between the handpiece (2) and the outer cutter bar (14), the anti-slip spring (21) being adapted to avoid collision between the inner cutter bar (12) and the outer cutter bar (14) during operation.
5. An ear abrasive drill according to claim 4, characterized in that a sealing assembly is provided in the handpiece (2) on the side near the front end, said sealing assembly being intended to block external liquids.
6. The otology abrasive drill of claim 5, wherein the seal assembly comprises a waterproof ring (22) and an O-ring seal (23).
7. The ear abrasive drill according to claim 6, characterized in that the tip of the handpiece (2) is circumferentially provided with a plurality of indentations (24), a plurality of said indentations (24) being intended for clamping a power handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923364.8U CN221105934U (en) | 2023-07-20 | 2023-07-20 | Otology grinds and bores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923364.8U CN221105934U (en) | 2023-07-20 | 2023-07-20 | Otology grinds and bores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221105934U true CN221105934U (en) | 2024-06-11 |
Family
ID=91368853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321923364.8U Active CN221105934U (en) | 2023-07-20 | 2023-07-20 | Otology grinds and bores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221105934U (en) |
-
2023
- 2023-07-20 CN CN202321923364.8U patent/CN221105934U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |