CN105559849A - Tapping drill bit for orthopaedic medical inner and outer fixation instrument - Google Patents
Tapping drill bit for orthopaedic medical inner and outer fixation instrument Download PDFInfo
- Publication number
- CN105559849A CN105559849A CN201410626543.4A CN201410626543A CN105559849A CN 105559849 A CN105559849 A CN 105559849A CN 201410626543 A CN201410626543 A CN 201410626543A CN 105559849 A CN105559849 A CN 105559849A
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- drill bit
- tapping
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- bar
- cutting edge
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Abstract
The invention relates to a tapping drill bit for an orthopaedic medical inner and outer fixation instrument. The tapping drill bit comprises a three-claw annular gripper for maintaining reset bone fracture alignment and a tapping drill bit body for drilling a threaded bone hole in a bone fracture alignment position. The tapping drill bit is characterized by consisting of a drill pipe section, a tapping section and a drill bit section which are coaxial; each of the tapping section and the drill bit section is provided with trisection communicated spiral chip discharge grooves using the respective axial line as the center; and the outer diameter of a main cutting edge of the drill bit section is identical to the root diameter of thread marks of a screw tap. The tapping drill bit has the advantages that the iatrogenic injury on facial soft tissues by the drill bit can be reduced; meanwhile, the drill bit can be made into various different specifications so as to adapt to different patients; the pain of the patients is reduced; and the operation is fast and safe.
Description
Technical field
The present invention relates to orthopedic medical device technical field, the threading drill bit of particularly a kind of internal and external fixation instrument for orthopaedic medical treatment use.
Background technology
Be used for the treatment of extremity backbone at present, the various orthopedic medical devices of intertrochanteric fracture and fracture of femoral neck have had many progress, as patent of invention ZL200710012279.5 " single side adjustable external fixing rack and combinationally use device "; Patent of invention ZL200810012533.6 " function type Colles's fracture combined fixator ", both provides good orthopedic medical device.Carry out intra-operative at the inside and outside fixed apparatus of installation orthopaedic medical treatment, use needs corresponding specific purpose tool and matches with it, just can receive better surgical effect.In the instrument used at present, use electric drill to carry out bore bone hole, but the electric drill of use, the handling of drill chuck tool bother very much, also very difficult, use current drill chuck tool clamping drill bit not only to require great effort, and card is not tight.What snap in because of drill chuck tool again is different from drill bit, the screw tap thickness specification that nail, pin screw thread mate, and in order to carrying out smoothly of performing the operation, have to prepare several electric drill, drill chuck tool, to bore different bone hole and bone silk hole more.There is the probability causing iatrogenic injury, operating time is long, inconvenient operation, and patient will bear larger misery.Therefore need to be improved.
Summary of the invention
The object of this invention is to provide a kind of easy to use and can ensure to receive better surgical effect internal and external fixation instrument for orthopaedic medical treatment use threading drill bit, to reduce iatrogenic injury as far as possible, shorten operating time, alleviate the misery that patient will bear, operation fast, is safely completed.
The object of the present invention is achieved like this:
The threading drill bit that internal and external fixation instrument for orthopaedic medical treatment of the present invention uses, comprise the three-jaw annular maintaining the fracture reduction after resetting to grab, this fracture reduction position is carried out to the threading drill bit of auger shell stricture of vagina bone hole, clamp the drill chuck tool of this threading drill bit, the snap joint of this drill chuck tool of quick-replaceable, bone nail or bone peg are delivered to the bitch spring-backed quill in described screw thread bone hole, to back-out the pipe of back-outing of the disconnecting nail that is arranged in described screw thread bone hole or disconnecting spicule, bar twisted by the straight type of left-right rotary that pipe of back-outing therewith matches or bar twisted by left-right rotary ratchet, the straight type of left-right rotary is twisted bar or left-right rotary ratchet and is twisted short stubborn bar that bar matches or longly twist bar therewith,
Described threading drill bit is by coaxial drill pipe section, tapping section and drill bit segment formed, tapping section and drill bit segment all establish trisection centered by axis, the spiral type chip area communicated, the external diameter of the main cutting edge of drill bit segment is equal with the root footpath of screw tap silking, main cutting edge angle close to main cutting edge point is 90 ° ~ 95 °, main cutting edge angle close to main cutting edge tail end is 118 ° ~ 120 °, the point of drill bit segment and the length of tail end are than being 1:1 ~ 1.5, the round bar portion external diameter of the screw tap silking tail end of tapping section is less than the root footpath of screw tap silking, the round bar portion tail end of tapping section is the triangle at circumferencial direction decile, the diameter of screw tap silking is 1.5 ~ 10mm, thread form angle α=29 ° ~ 42 °, tooth form subangle α 1=4 ° ~ 12 °, preceding thread root arc radius R=0.3mm ~ 1.5mm, rear thread root arc radius r=0.15mm ~ 1.0mm.
Advantage of the present invention is: can reduce drill bit opposite side soft tissue iatrogenic injury owing to have employed said structure the present invention.Drill bit can be made multiple different size by the present invention, to adapt to different patient.
The present invention can reduce iatrogenic injury as far as possible, shortens operating time, alleviates the misery that patient will bear, and makes that operation is quick, safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of threading drill bit of the present invention.
Fig. 2 is the right view of threading drill bit.
Fig. 3 is the structural representation in the silking portion of threading drill bit.
Detailed description of the invention
The specific embodiment of the present invention is further illustrated below in conjunction with the embodiment given by accompanying drawing.
As Figure 1-3, the threading drill bit that internal and external fixation instrument for orthopaedic medical treatment of the present invention uses, comprise the three-jaw annular maintaining the fracture reduction after resetting to grab, this fracture reduction position is carried out to the threading drill bit of auger shell stricture of vagina bone hole, clamp the drill chuck tool of this threading drill bit, the snap joint of this drill chuck tool of quick-replaceable, bone nail or bone peg are delivered to the bitch spring-backed quill in described screw thread bone hole, to back-out the pipe of back-outing of the disconnecting nail that is arranged in described screw thread bone hole or disconnecting spicule, bar twisted by the straight type of left-right rotary that pipe of back-outing therewith matches or bar twisted by left-right rotary ratchet, the straight type of left-right rotary is twisted bar or left-right rotary ratchet and is twisted short stubborn bar that bar matches or longly twist bar therewith,
It is characterized in that described threading drill bit 1 is by coaxial drill pipe section, tapping section and drill bit segment formed, tapping section and drill bit segment all establish trisection centered by axis, the spiral type chip area 2 communicated, the external diameter of the main cutting edge of drill bit segment is equal with the root footpath of screw tap silking, main cutting edge angle close to main cutting edge point is 90 ° ~ 95 °, main cutting edge angle close to main cutting edge tail end is 118 ° ~ 120 °, the point of drill bit segment and the length of tail end are than being 1:1 ~ 1.5, the round bar portion external diameter of the screw tap silking tail end of tapping section is less than the root footpath of screw tap silking, the round bar portion tail end of tapping section is the triangle (see figure 2) at circumferencial direction decile, the diameter of screw tap silking is 1.5 ~ 10mm, thread form angle α=29 ° ~ 42 °, tooth form subangle α 1=4 ° ~ 12 °, preceding thread root arc radius R=0.3mm ~ 1.5mm, rear thread root arc radius r=0.15mm ~ 1.0mm(is shown in Fig. 3).
The present invention can reduce drill bit opposite side soft tissue iatrogenic injury.Drill bit can be made multiple different size, to adapt to different patient simultaneously.
Claims (1)
1. the threading drill bit of an internal and external fixation instrument for orthopaedic medical treatment use, comprise the three-jaw annular maintaining the fracture reduction after resetting to grab, this fracture reduction position is carried out to the threading drill bit of auger shell stricture of vagina bone hole, clamp the drill chuck tool of this threading drill bit, the snap joint of this drill chuck tool of quick-replaceable, bone nail or bone peg are delivered to the bitch spring-backed quill in described screw thread bone hole, to back-out the pipe of back-outing of the disconnecting nail that is arranged in described screw thread bone hole or disconnecting spicule, bar twisted by the straight type of left-right rotary that pipe of back-outing therewith matches or bar twisted by left-right rotary ratchet, the straight type of left-right rotary is twisted bar or left-right rotary ratchet and is twisted short stubborn bar that bar matches or longly twist bar therewith,
It is characterized in that described threading drill bit is by coaxial drill pipe section, tapping section and drill bit segment formed, tapping section and drill bit segment all establish trisection centered by axis, the spiral type chip area communicated, the external diameter of the main cutting edge of drill bit segment is equal with the root footpath of screw tap silking, main cutting edge angle close to main cutting edge point is 90 ° ~ 95 °, main cutting edge angle close to main cutting edge tail end is 118 ° ~ 120 °, the point of drill bit segment and the length of tail end are than being 1:1 ~ 1.5, the round bar portion external diameter of the screw tap silking tail end of tapping section is less than the root footpath of screw tap silking, the round bar portion tail end of tapping section is the triangle at circumferencial direction decile, the diameter of screw tap silking is 1.5 ~ 10mm, thread form angle α=29 ° ~ 42 °, tooth form subangle α 1=4 ° ~ 12 °, preceding thread root arc radius R=0.3mm ~ 1.5mm, rear thread root arc radius r=0.15mm ~ 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410626543.4A CN105559849A (en) | 2014-11-10 | 2014-11-10 | Tapping drill bit for orthopaedic medical inner and outer fixation instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410626543.4A CN105559849A (en) | 2014-11-10 | 2014-11-10 | Tapping drill bit for orthopaedic medical inner and outer fixation instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105559849A true CN105559849A (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410626543.4A Pending CN105559849A (en) | 2014-11-10 | 2014-11-10 | Tapping drill bit for orthopaedic medical inner and outer fixation instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105559849A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620376A (en) * | 2018-12-17 | 2019-04-16 | 吉林大学 | A kind of unidirectional spicule |
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
-
2014
- 2014-11-10 CN CN201410626543.4A patent/CN105559849A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620376A (en) * | 2018-12-17 | 2019-04-16 | 吉林大学 | A kind of unidirectional spicule |
| CN114948123A (en) * | 2022-05-23 | 2022-08-30 | 苏州微创智行医疗科技有限公司 | Puncture probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |
|
| WD01 | Invention patent application deemed withdrawn after publication |