CN2054305U - Bit for skull operation - Google Patents
Bit for skull operation Download PDFInfo
- Publication number
- CN2054305U CN2054305U CN 89203936 CN89203936U CN2054305U CN 2054305 U CN2054305 U CN 2054305U CN 89203936 CN89203936 CN 89203936 CN 89203936 U CN89203936 U CN 89203936U CN 2054305 U CN2054305 U CN 2054305U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drill
- utility
- skull
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Surgical Instruments (AREA)
Abstract
The utility model relates to a bit for skull operation, which integrates the characteristics of the existing sharp drills and round drills, comprising a drill stem and a drill bit. The utility model is suitable for any drill hand crank. The utility model has the advantages that holes are drilled in skull blocks; the drill bit doesn't need to be changed; the time to drill is saved; the time of operations can be shortened; the safety factor of operations is increased.
Description
This utility model belongs to medical instruments field, is specifically related to a kind of new drill that skull is used of opening.
In operation of opening cranium, drill bit is one of important operating theater instruments.For many years, the pin bit that is used to out skull roughly is two kinds, and promptly earlier with having only two-edged, drift angle is that 120 ° pointed drill is holed on skull, and then with having the round bur reaming greater than 120 ° of multiple-cutting-edge, drift angle.Like this, the patient will change drill bit one time in operation, just can finish the boring purpose, and not only patient's effort has also prolonged and opened the cranium time, even incurs loss through delay the rescue time of emergency treatment.Along with progress of science and technology, electric drill and pneumatic brill also are applied in the operation of opening cranium, but electric drill and pneumaticly be drilled with following defective: the first, the cost of these two kinds of brills is very high; The second, need electricity or oxygen to do power during use, be unsuitable under emergent situation, especially using under army's field condition; The 3rd: because the cost height, some middle and small hospitals do not have condition to use at present, are still using the bitbrace that uses for many years.
In order to overcome the defective of prior art, this utility model combines the advantage of above-mentioned drill bit, and a kind of novel drill bit that skull is used that is used to out is provided.
This utility model is achieved through the following technical solutions: a kind of brill of being made up of drilling rod (3) and drill bit (4).Drill bit (4) is a cone, evenly opens 3-5 sword at the side surface of cone, and knife-edge (1) is a helix, and an end of helix is by the drill bit summit, and intersect the other end and circular cone bottom surface.The anterior angle of sword is 5 °-15 °, and relief angle is the high 1.5-3 millimeters of 30 ° of-35 ° of blade tips (2), and the drift angle of drill bit is 55 °-65 °.
When using this utility model drill bit, the top tip part of drill bit is the contact skull earlier, opens an aperture on skull, and along with feed, the hole enlarges gradually, and the groove of smear metal along between two adjacent swords discharged.Perforate and reaming are once finished, and the size of reaming depends on the external diameter of blade tip.
This utility model is compared with general existing drill bit, has obvious advantage:
The first, when this utility model used, it is fast that drill bit is gone into cranium, can save patient's muscle power greatly, shortens the time of skull perforate.
Second: because this utility model combines two kinds of advantages that drill bit is pointed drill and round bur of original use, in the operation, the patient needn't change drill bit again one time.
The 3rd: the emergency call salving when this utility model is useful for craniocerebral injury most and cerebral hernia has occurred especially to army under field condition, remove intracranial hematoma, have very big practical value.
The 4th: this utility model is not only applicable to various bitbraces, and improves a little, just can use on electric drill and pneumatic brill.
According to the technical solution of the utility model, produced several external diameters different open the skull drill bit, respond well through clinical practice, reached the purpose of utility model.
Description of drawings:
Fig. 1 is a kind of sketch map of opening the drill bit that skull uses, wherein:
1, knife-edge line, 2,---blade tip.3,---drilling rod.4,---drill bit.
Claims (1)
1, a kind ofly open the drill bit that skull is used, be made up of drilling rod and drill bit two parts, it is characterized in that: drill bit is the cone that a side has 3-5 sword, its drift angle is 55 °-65 °, and knife-edge is a helix, and the anterior angle of sword is 5 °-15 °, relief angle is 30 °-35 °, the high 1.5mm-3mm of blade tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203936 CN2054305U (en) | 1989-04-07 | 1989-04-07 | Bit for skull operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203936 CN2054305U (en) | 1989-04-07 | 1989-04-07 | Bit for skull operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2054305U true CN2054305U (en) | 1990-03-14 |
Family
ID=4861403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89203936 Expired - Lifetime CN2054305U (en) | 1989-04-07 | 1989-04-07 | Bit for skull operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2054305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10363049B2 (en) | 2012-06-01 | 2019-07-30 | Renishaw Plc | Cranial drill system |
-
1989
- 1989-04-07 CN CN 89203936 patent/CN2054305U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10363049B2 (en) | 2012-06-01 | 2019-07-30 | Renishaw Plc | Cranial drill system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |