CN204207809U - A kind of safety cranial bone drill - Google Patents
A kind of safety cranial bone drill Download PDFInfo
- Publication number
- CN204207809U CN204207809U CN201420559809.3U CN201420559809U CN204207809U CN 204207809 U CN204207809 U CN 204207809U CN 201420559809 U CN201420559809 U CN 201420559809U CN 204207809 U CN204207809 U CN 204207809U
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- drill
- tooth
- operator
- spacing
- recessed
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Abstract
This utility model belongs to neurosurgery technical field, particularly relate to a kind of safety cranial bone drill, main drill is provided with operator tooth, the point of a knife of operator tooth intersect on axis a bit, the tail end of main drill is provided with double wedge, spacing drill front end is provided with auxiliary cutter tooth, the length of auxiliary cutter tooth is less than the length of operator tooth, recessed tooth one is provided with after spacing drill, connect body front end and have recessed tooth two, recessed tooth one, recessed tooth two matches with double wedge respectively, drill extension bar is threaded with spacing drill through connecting body, conical compression spring housing is on thimble, conical compression spring, thimble is all positioned at drill connecting rod, drill caudal peduncle is connected with drill connecting rod by screw thread.The beneficial effects of the utility model are: automatically can control the start and stop in operation process, can effectively prevent from boring meninges in operation process, can not injured brain tissue, have had guarantee to the life of patient.
Description
Technical field
This utility model belongs to neurosurgery technical field, particularly relates to a kind of safety cranial bone drill.
Background technology
The diseases such as increased intracranial pressure, craniocerebral injury, intracranial tumor, cerebrovascular, intracranial infection are one of killers of harm humans life and health always for a long time.Neurosurgery is the important means of curing this type of disease, and principle primary in operation saves nervous tissue from damage, reduce Accessory injury and infection, and operation power device plays pivotal role in neurosurgery.Surgery power system refers to can provide power needed for operation, control and operating apparatus, alleviates working doctor intensity, realizes the surgery device of accurate operation technique.
The skin of human brain is covered by hair, skin, and being the skull shielded below scalp, is cerebral dura mater below skull, because meninges has elasticity, still has the gap of nearly 2mm after drilling skull between skull and meninges.When skull is holed, healthcare givers carefully must use boring bar tool, can not drill meninges when drilling skull, jeopardizes patients ' lives safety to avoid injuring cerebral tissue.Therefore in boring procedure, the speed of electric drill preferably operates in the following manner, effectively could ensure that the success of performing the operation is carried out, and is unlikely to because operative failure causes the nervous tissue of patient harm.(1) electric drill is with certain starting velocity feeding, and when electric drill has just started boring (ground floor os osseum matter), electric drill resistance becomes large, and when now continuing boring, feed speed is slack-off; (2) when electric drill drill os osseum layer enter people intermediate layer (hyaloidin) time, electric drill resistance can than brill ground floor time little, now continue boring time, feed speed maintains initial feed speed; (3) in order to drill the os osseum matter of innermost layer, the power that feeding needs is comparatively large, and feed speed needs again slack-off.Also there is no this cranial drill at present.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of safety cranial bone drill, automatically can control the start and stop in operation process, can effectively prevent from boring meninges in operation process, can not injured brain tissue, has had guarantee to the life of patient.
To achieve these goals, this utility model adopts following technical scheme:
A kind of safety cranial bone drill, it is characterized in that comprising the main drill connected successively, spacing drill, connect body, drill extension bar, thimble, conical compression spring, drill caudal peduncle, described main drill is provided with operator tooth, the point of a knife of described operator tooth intersect on axis a bit, the tail end of described main drill is provided with double wedge, described spacing drill front end is provided with auxiliary cutter tooth, the length of described auxiliary cutter tooth is less than the length of described operator tooth, recessed tooth one is provided with after described spacing drill, there is recessed tooth two described connection body front end, described recessed tooth one, described recessed tooth two matches with described double wedge respectively, described drill extension bar is threaded with described spacing drill through described connection body, described conical compression spring housing is on described thimble, described conical compression spring, described thimble is all positioned at described drill connecting rod, described drill caudal peduncle is connected with described drill connecting rod by screw thread.
The length of described operator tooth is 8mm-10mm, the length 4mm shorter in the length of described operator tooth of described auxiliary cutter tooth.
The quantity of described recessed tooth one, described recessed tooth two is identical.
Described main drill is provided with 6 described operator teeth, and the quantity of described double wedge is 3.
The quantity of described auxiliary cutter tooth, described recessed tooth one is 3.
The beneficial effects of the utility model are: the increase of this utility model thimble, conical compression spring can control the start and stop of main drill in operation process automatically, the size of spacing drill is less than the size of main drill, can prevent drill bit from inserting intracranial injury meninges, play the effect that protection is spacing; Main drill, spacing drill, the cooperation connected between body can control the clutch of drill, and then control the feeding of cranial drill in time, effectively prevent in operation process and bore meninges, can not injured brain tissue, have ensured the life of patient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is sectional view of the present utility model.
In figure, 1, main drill, 2, spacing drill, 3, connect body, 4, drill extension bar, 5, thimble, 6, conical compression spring, 7, drill caudal peduncle, 8, operator tooth, 9, double wedge, 10, auxiliary cutter tooth, 11, recessed tooth one, 12, recessed tooth two, 13, secondary drill bit.
Detailed description of the invention
Below in conjunction with accompanying drawing, a kind of detailed description of the invention of the present utility model is explained.
As Fig. 1, shown in Fig. 2, this utility model provides a kind of safety cranial bone drill, it is characterized in that comprising the main drill 1 connected successively, spacing drill 2, connect body 3, drill extension bar 4, thimble 5, conical compression spring 6, drill caudal peduncle 7, described main drill 1 is provided with operator tooth 8, the point of a knife of described operator tooth 8 intersects at and axis a bit forms drill bit, the tail end of described main drill 1 is provided with double wedge 9, described spacing drill 2 front end is provided with auxiliary cutter tooth 10, the length of described auxiliary cutter tooth 10 is less than the length of described operator tooth 8, recessed tooth 1 is provided with after described spacing drill 2, there is recessed tooth 2 12 described connection body 3 front end, described recessed tooth 1, described recessed tooth 2 12 matches with described double wedge 9 respectively, described drill extension bar 4 is threaded with described spacing drill 2 through described connection body 3, described conical compression spring 6 is enclosed within described thimble 5, described conical compression spring 6, described thimble 5 is all positioned at described drill connecting rod, described drill caudal peduncle 7 is connected with described drill connecting rod by screw thread, in described drill caudal peduncle 7, secondary drill bit 13 is installed.
Main drill 1 has six teeth 8 of operating, previously by axis, six operator teeth 8 are concentrated and are met at centrage, enable to keep flat during cutting skull.In main drill 1,8 degree of relief angles are made at 8mm place, extract with unlikely retardance drill bit after making skull drill bit.Main drill 1 tail end three double wedges 9 are 20 degree of angle uniform strength design, and cutting force can be made to be divided into mirror image cutting force and axial clutch power, thus make main drill 1 keep good automatic clutch performance, disengaging performance when particularly having good high-speed rotation stressed.Double wedge 9 surface keeps good fineness, makes stable friction factor, to keep good clutch precision.
Spacing drill 2 has three auxiliary cutters tooth 10, its 4mm shorter in main drill 1.Main drill 1 can be made after drill bit skull to have enough resistances, prevent drill bit from inserting intracranial injury meninges, play the effect that protection is spacing.If skull thickness is more than 4mm, then play continuation shear action, until bore skull.After three auxiliary cutters tooth 10 insert skull, main drill 1 clutch can be made to depart from, hinder main drill 1 to rotate.Spacing drill 2 has three recessed teeth 1 below, combines with three double wedges 9 of main drill 1.Its effect one is driving force, and two is promote clutch, to keep main body slipping.
The front end connecting body 3 has three recessed teeth 1 of three recessed teeth 2 12 and spacing drill 2 to match with three double wedges 9 of main drill 1 simultaneously, makes power transmission to main drill 1 and spacing drill 2, also has the effect promoting clutch simultaneously.
Drill extension bar 4 can make thimble 5 and conical compression spring 6 bear stable axial compressive force.
After both thimble 5 and conical compression spring 6 combine, when main drill 1 reduces through skull pressure, namely there is enough pressure to be backed down forward by drill bit, make it to depart from main body, ensure the automatic stop of main drill 1 and do not injure meninges.
Drill caudal peduncle 7 is fast switching plugs, to be connected fast with body, easy to use.
Example: first this utility model and fabric rig jacket are carried out autoclaving (rig is not sterilized) for subsequent use before use, patient can to push main drill 1 for several times with finger to body direction, test its whether resilience, flexibly.During operation, rig is placed in sterilizing cloth cover by patient, then drill bit is inserted in rig leading portion, be connected with electric hand drill, tighten with lock, now just can operate use, hold drill caudal peduncle 7, drill bit is not orthogonal to skull anchor point, while force with vertical direction, finger pressure electric drill switch, drill is engaged with controller, the skull of rotary-cut simultaneously, skull gently presses drill bit, then cocking, treat that shallow slot appears in skull, drill bit is unlikely when surface of bone slides, more deeply presses drill bit, until bore skull.When main drill 1 bores the moment of skull, the pressure on end sword is less than rated pressure, and the pressure sensing propeller rope controlled wherein makes drill and controller unlock, though now rear portion motor is in rotation, drill stops rotary-cut, automatically stops, and now extracts drill bit.Thus effectively ensure that skull left by brill and meninges is injury-free, reach the optimum efficiency for the treatment of.Post operation, can unload into multiple parts and carry out cleaning wiping by rig.
Above an example of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to this utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (5)
1. a safety cranial bone drill, it is characterized in that comprising the main drill connected successively, spacing drill, connect body, drill extension bar, thimble, conical compression spring, drill caudal peduncle, described main drill is provided with operator tooth, the point of a knife of described operator tooth intersect on axis a bit, the tail end of described main drill is provided with double wedge, described spacing drill front end is provided with auxiliary cutter tooth, the length of described auxiliary cutter tooth is less than the length of described operator tooth, recessed tooth one is provided with after described spacing drill, there is recessed tooth two described connection body front end, described recessed tooth one, described recessed tooth two matches with described double wedge respectively, described drill extension bar is threaded with described spacing drill through described connection body, described conical compression spring housing is on described thimble, described conical compression spring, described thimble is all positioned at described drill connecting rod, described drill caudal peduncle is connected with described drill connecting rod by screw thread.
2. safety cranial bone drill according to claim 1, is characterized in that the length of described operator tooth is 8mm-10mm, the length 4mm shorter in the length of described operator tooth of described auxiliary cutter tooth.
3. safety cranial bone drill according to claim 1, is characterized in that the quantity of described recessed tooth one, described recessed tooth two is identical.
4. safety cranial bone drill according to claim 1, it is characterized in that described main drill is provided with 6 described operator teeth, the quantity of described double wedge is 3.
5. safety cranial bone drill according to claim 1, is characterized in that described auxiliary cutter tooth, the quantity of described recessed tooth one is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559809.3U CN204207809U (en) | 2014-09-25 | 2014-09-25 | A kind of safety cranial bone drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559809.3U CN204207809U (en) | 2014-09-25 | 2014-09-25 | A kind of safety cranial bone drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204207809U true CN204207809U (en) | 2015-03-18 |
Family
ID=52976526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420559809.3U Expired - Fee Related CN204207809U (en) | 2014-09-25 | 2014-09-25 | A kind of safety cranial bone drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204207809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111134767A (en) * | 2020-01-17 | 2020-05-12 | 重庆西山科技股份有限公司 | Skull hole digger and skull hole subassembly |
-
2014
- 2014-09-25 CN CN201420559809.3U patent/CN204207809U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111134767A (en) * | 2020-01-17 | 2020-05-12 | 重庆西山科技股份有限公司 | Skull hole digger and skull hole subassembly |
| CN111134767B (en) * | 2020-01-17 | 2021-07-06 | 重庆西山科技股份有限公司 | Skull hole digger and skull hole subassembly |
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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: 20150318 Termination date: 20150925 |
|
| EXPY | Termination of patent right or utility model |