CN202776462U - Hand drill with depth limit device - Google Patents
Hand drill with depth limit device Download PDFInfo
- Publication number
- CN202776462U CN202776462U CN 201220173101 CN201220173101U CN202776462U CN 202776462 U CN202776462 U CN 202776462U CN 201220173101 CN201220173101 CN 201220173101 CN 201220173101 U CN201220173101 U CN 201220173101U CN 202776462 U CN202776462 U CN 202776462U
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- drill
- screw thread
- craniotomy
- nut
- hand
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Abstract
The utility model provides a hand craniotomy drill with a depth limit device. The hand craniotomy comprises a drill (1), a screw thread (2), a drill body (3), a drill body connecting portion (4) and a nut (5). According to the hand craniotomy drill, operation is simple, usage is convenient, the cranial bone depth can be regulated according to the thickness of cranial bones of a patient, using cost is low, and using safety is significantly improved.
Description
Technical field
This utility model relates to a kind of hand drill for craniotomy for the neurosurgery operation of opening cranium, and its band depth stop device can bore the skull degree of depth according to the thickness adjusted of patient's skull.
Background technology
In the neurosurgery operation of opening cranium, drill for craniotomy is to use apparatus, and present employed drill for craniotomy has electrodynamic type, pneumatic type and hand-rail type, and wherein hand-rail type is the most commonly used.The advantage of hand drill for craniotomy is that simple in structure, easy operation, usage charges are low, so use more general.The weak point that bitbrace exists mainly is that safety is low, and brill is thoroughly rear under the pressure and inertia of hand holding handle, and drill bit may go deep into damaging easily dura mater and cerebral tissue in the brain.
Therefore, need a kind of can be according to patient's the skull degree of depth and the keyhole degree of depth freely, safety coefficient is high, simple to operate and need not the hand drill for craniotomy of skilled professional skill.
The utility model content
The purpose of this utility model is in order to overcome defects, a kind of bitbrace with the depth stop device is provided, it is not only simple to operate, easy to use, can bore the skull degree of depth according to the thickness adjusted of patient's skull, use cost is low, after cranial drill is saturating, can limit the distance that drill bit gos deep into skull, greatly improve safety.
For reaching above purpose, this utility model provides a kind of hand drill for craniotomy with the depth stop device, it comprises drill bit (1), screw thread (2), drill body (3), drill body connecting portion (4), nut (5), wherein said screw thread (2) is arranged on the surface of described drill body (3) near described drill bit (1) one side, and lower described nut (5) passes described drill bit (1) and is meshed with described screw thread (2) in working order.After screw thread (2) and nut (5) engagement, just formed the depth stop device.
In one embodiment, described drill bit (1) and the adjacent setting of described screw thread (2).
In another embodiment, the direction of rotation of screw thread (2) is counterclockwise upwards.
In a preferred embodiment, be provided with the rule of mark lengths (2) along its center line to screw thread from the apex point of described drill bit (1).The length of this rule is 5～20mm.
In another preferred embodiment, the length of screw thread is 10～20mm.
In one embodiment, hand drill for craniotomy of the present utility model is designed to when nut (5) is meshed the length that reaches predetermined counterclockwise with screw thread (2), opposite spin nut (5) just can firmly be fixed on the screw thread (2), when drill bit bored skull clockwise, nut (5) can more firm being fixed on the screw thread (2).
The beneficial effects of the utility model are very obvious, the one, reasonable in design, make simple, easy to operate, guarantee safety, bore the skull degree of depth and can do corresponding adjusting according to art fore head CT or MRI calculating, in order to avoid hurt dura mater, reduce the probability that drill bit passes dura mater even hurts cerebral tissue, better protected cerebral tissue; The 2nd, time saving and energy saving, reusable, use cost is low, has greatly reduced postoperative after effect, avoids contingency to occur, and has improved safety, has certain promoting the use of and social economic value in the operation process of drill for craniotomy hole.
Description of drawings
Fig. 1 is the axonometric chart of the hand drill for craniotomy of prior art;
Fig. 2 is the axonometric chart of hand drill for craniotomy of the present utility model;
Fig. 3 is the axonometric chart of hand drill for craniotomy of the present utility model under in working order.
The specific embodiment
Fig. 1 is the axonometric chart of prior art hand drill for craniotomy.As can be seen from Figure 1, because without any depth stop means, therefore when the drill for craniotomy hole, doctor's sensation and skill leaned in the grasp of the degree of depth fully, so the utmost point is unfavorable for that intern and low age and service seniority doctor use.And because each patient's skull thickness difference or anatomy difference such as sclerotin soft or hard degree are not equal, even skilled neurosurgeon also might be because of feeling to occur deviation, or cause the threat to patient safety because of a variety of causes overexertion.
Fig. 2 is the axonometric chart for hand drill for craniotomy of the present utility model, wherein illustrate the hand drill for craniotomy with the depth stop device of the present utility model, this hand drill for craniotomy is comprised of drill bit (1), screw thread (2), drill body (3), drill body connecting portion (4), nut (5), and wherein screw thread (2) is arranged on the surface of drill body (3) near drill bit (1) one side.Can also see that from Fig. 2 drill bit (1) is adjacent with screw thread (2), and drill bit (1) is provided with center line, can carves as required to indicate the rule of length on it.
Fig. 3 is the axonometric chart of hand drill for craniotomy of the present utility model under in working order, can find out therefrom that lower nut (5) passes drill bit (1) in working order to be meshed with screw thread (2).When using hand drill for craniotomy of the present utility model, calculate the skull thickness of the drill hole of wanting according to art fore head CT or MRI, be generally 5-10mm, skull thickness is the be meshed length of rear apex point apart from drill bit (1) of screw thread (2) and nut (5).And after screw thread (2) and nut (5) engagement, just formed the depth stop device, so that drill bit (1) can or not go deep into because of the existence of nut (5) after boring saturating skull again, to avoid hurting dura mater and cerebral tissue, because most operative doctor is dextromanuality, boring the influential point of bone bores in a clockwise direction, so screw thread (2) is counterclockwise to make progress, when being rotated counterclockwise nut (5) and reaching the length of calculating, opposite spin one lower nut (5) just can be its firm being fixed on the brill again, when boring bone clockwise, nut (5) only can more firmly be fixed on the brill, and does not worry that it can move or comes off from boring.Certainly, screw thread and nut also can arrange in the mode opposite with aforesaid way, and namely direction of rotation is in the clockwise direction, and bore bone counterclockwise to bore, and this mode is also included within the scope of the present utility model.
With reference to preferred implementation of the present utility model this utility model is had been described in detail.Yet what it will be understood by those skilled in the art that is to make change to these embodiments in the situation that does not deviate from principle of the present utility model and spirit.
Claims (7)
1. hand drill for craniotomy with the depth stop device, it comprises drill bit (1), screw thread (2), drill body (3), drill body connecting portion (4), nut (5), wherein said screw thread (2) is arranged on the surface of described drill body (3) near described drill bit (1) one side, and lower described nut (5) passes described drill bit (1) and is meshed with described screw thread (2) in working order.
2. hand drill for craniotomy according to claim 1 is characterized in that described drill bit (1) and the adjacent setting of described screw thread (2).
3. hand drill for craniotomy according to claim 1 and 2 is characterized in that the direction of rotation of screw thread (2) is for making progress counterclockwise.
4. each described hand drill for craniotomy according to claim 1-3 is characterized in that being provided with (2) along its center line to screw thread from the apex point of described drill bit (1) rule of mark lengths.
5. hand drill for craniotomy according to claim 4, the length that it is characterized in that described rule is 5～20mm.
6. each described hand drill for craniotomy according to claim 1-5, the length that it is characterized in that screw thread is 10～20mm.
7. each described hand drill for craniotomy according to claim 3-6, it is characterized in that described hand drill for craniotomy is designed to when nut (5) is meshed the length that reaches predetermined counterclockwise with screw thread (2), opposite spin nut (5) just can firmly be fixed on the screw thread (2), when drill bit bored skull clockwise, nut (5) can more firm being fixed on the screw thread (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220173101 CN202776462U (en) | 2012-04-15 | 2012-04-15 | Hand drill with depth limit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220173101 CN202776462U (en) | 2012-04-15 | 2012-04-15 | Hand drill with depth limit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202776462U true CN202776462U (en) | 2013-03-13 |
Family
ID=47803823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220173101 Expired - Fee Related CN202776462U (en) | 2012-04-15 | 2012-04-15 | Hand drill with depth limit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202776462U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743206A (en) * | 2012-04-15 | 2012-10-24 | 孟凡刚 | Hand drill with depth limiting device |
| CN104644274A (en) * | 2013-11-25 | 2015-05-27 | 牙科生物科技公司 | Dental tool with penetration indicating bands |
| CN107811671A (en) * | 2016-05-18 | 2018-03-20 | 黄文佳 | A kind of manual craniotomy drill |
-
2012
- 2012-04-15 CN CN 201220173101 patent/CN202776462U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743206A (en) * | 2012-04-15 | 2012-10-24 | 孟凡刚 | Hand drill with depth limiting device |
| CN104644274A (en) * | 2013-11-25 | 2015-05-27 | 牙科生物科技公司 | Dental tool with penetration indicating bands |
| CN107811671A (en) * | 2016-05-18 | 2018-03-20 | 黄文佳 | A kind of manual craniotomy drill |
| CN107811671B (en) * | 2016-05-18 | 2019-06-25 | 青岛大学附属医院 | A kind of manual craniotomy drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20150415 |
|
| EXPY | Termination of patent right or utility model |