CN203841779U - Orthopaedic special drill bit - Google Patents
Orthopaedic special drill bit Download PDFInfo
- Publication number
- CN203841779U CN203841779U CN201420272156.0U CN201420272156U CN203841779U CN 203841779 U CN203841779 U CN 203841779U CN 201420272156 U CN201420272156 U CN 201420272156U CN 203841779 U CN203841779 U CN 203841779U
- Authority
- CN
- China
- Prior art keywords
- pole
- central rod
- center
- drilling machine
- hollow
- 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 - Fee Related
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Abstract
The utility model discloses an orthopaedic special drill bit. The drill bit comprises a hollow sleeve drill, an inner central rod and an outer central rod. The head part of the hollow sleeve drill is welded to a milling cutter. The outer central rod sleeves the inner side of the hollow sleeve drill. A thrust bearing is disposed between the he tail part of the outer central rod and the hollow sleeve drill. A first bearing and a second bearing are disposed between the outwall of the outer central rod and the inwall of the hollow sleeve drill. The inner central rod sleeves the inner side of the outer central rod. A spring is disposed between the tail part of the inner central rod and the outer central rod. The inner central rod is cylindrical and at least provided with at least a bar-shaped slide key in a bar-shaped groove. The head end of the inner central rod is hexagonal prism-shaped and inserted to a hexagonal aperture of a corresponding steel nail. The inner central rod passes through the hollow sleeve drill. The hexagonal prism passes through the milling cutter. The outer part of the hollow sleeve drill is provided with a first gear that is engaged with a driving gear. The driving gear is linked to the output shaft of the motor. The drill bit can smoothly remove a steel nail corroded with a steel plate, and then smoothly remove the steel plate fixed to a bone, so as to prevent secondary damage to the patient.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of orthopaedics target drill.
Background technology
At present, for fracture patient, can take the method for Operation steel plate to fix the bone injury fractureing, steel plate need to be fixed with steel nail, between steel plate and steel nail, is to be threaded.Certain hour takes out steel plate later again, yet often due to overlong time, the situation of corrosion in steel plate can occur steel nail, so the difficulty of taking-up steel nail is large, and easily patient is caused to secondary injury.
Summary of the invention
The purpose of this utility model is in steel plate, to be difficult for the problem of taking out in order to solve the fixedly steel nail corrosion of bone injury, and a kind of orthopaedics target drill is provided.
This utility model is by Hollow trepanning drilling machine, interior center-pole and outer center-pole form, wherein the head of Hollow trepanning drilling machine is welded with milling cutter, milling cutter is hollow, outer center-pole is set in Hollow trepanning drilling machine, between the afterbody of outer center-pole and Hollow trepanning drilling machine, be provided with thrust bearing, between the outer wall of outer center-pole and the inwall of Hollow trepanning drilling machine, be provided with clutch shaft bearing and the second bearing, the head of outer center-pole is hollow, inside is coated with interior center-pole, between the afterbody of interior center-pole and outer center-pole, be provided with spring, interior center-pole is cylinder, on cylinder, be provided with at least one bar shaped feather key, the inwall of outer center-pole offers strip groove, bar shaped feather key is arranged in strip groove, the head end of interior center-pole is six prisms, six prisms can be inserted in the inner hexagonal hole of corresponding steel nail, interior center-pole is through Hollow trepanning drilling machine, six prisms are through milling cutter, the outer setting of Hollow trepanning drilling machine has the first gear and driving gear engagement, driving gear connects with the output shaft of motor.
Work process of the present utility model: while using this utility model, the afterbody of outer center-pole and motor are fixed on electric drill, the first gear is meshed with the driving gear on motor output shaft, six prisms of interior center-pole head end are withstood in the steel nail inner hexagonal hole of fixation steel plate and support and locate by spring, driven by motor driving gear rotates, driving gear drives Hollow trepanning drilling machine quick rotation, Hollow trepanning drilling machine drives milling cutter to rotate steel nail Steel Plate Guide Drill is around made to steel nail and steel plate disengaging thoroughly, then use instrument that steel nail is screwed out, after all steel nails take out, the steel plate of fixing bone just can take out smoothly.
The beneficial effects of the utility model:
This utility model can successfully take out the steel nail together with steel plate corrosion, and then can successfully the steel plate being fixed on bone be taken out, and has avoided the secondary injury to patient.
Accompanying drawing explanation
Fig. 1 is longitudinal sectional view of the present utility model.
Fig. 2 is that A-A in Fig. 1 is to cutaway view.
Fig. 3 is that B in Fig. 1 is to view.
Fig. 4 is that C-C in Fig. 3 is to cutaway view.
The specific embodiment
Refer to Fig. 1, shown in Fig. 2 and Fig. 3, for embodiment of the present utility model, the present embodiment is by Hollow trepanning drilling machine 1, interior center-pole 2 and outer center-pole 3 form, wherein the head of Hollow trepanning drilling machine 1 is welded with milling cutter 4, milling cutter 4 is hollow, outer center-pole 3 is set in Hollow trepanning drilling machine 1, between the afterbody of outer center-pole 3 and Hollow trepanning drilling machine 1, be provided with thrust bearing 5, between the inwall of the outer wall of outer center-pole 3 and Hollow trepanning drilling machine 1, be provided with clutch shaft bearing 6 and the second bearing 7, the head of outer center-pole 3 is hollow, inside is coated with interior center-pole 2, between the afterbody of interior center-pole 2 and outer center-pole 3, be provided with spring 8, interior center-pole 2 is cylinder, on cylinder, be provided with three bar shaped feather keys 22, the inwall of outer center-pole 3 offers three strip grooves 31, bar shaped feather key 22 is arranged in strip groove 31, the head end of interior center-pole 2 is six prisms 21, six prisms 21 can be inserted in the inner hexagonal hole of corresponding steel nail, interior center-pole 2 is through Hollow trepanning drilling machine 1, six prisms 21 are through milling cutter 4, the outer setting of Hollow trepanning drilling machine 1 has the first gear 9 and driving gear 10 engagements, driving gear 10 connects with the output shaft of motor 11.
Blade 41 shapes of milling cutter 4 as shown in Figure 3 and Figure 4.
Work process of the present utility model:
While using this utility model, the afterbody of outer center-pole 3 and motor 11 are fixed on electric drill, the first gear 9 is meshed with the driving gear 10 on motor 11 output shafts, six prisms 21 of interior center-pole 2 head ends are withstood in the steel nail inner hexagonal hole of fixation steel plate and support and locate by spring 8, motor 11 drives driving gear 10 to rotate, driving gear 10 drives Hollow trepanning drilling machine 1 quick rotation, Hollow trepanning drilling machine 1 drives milling cutter 4 to rotate steel nail Steel Plate Guide Drill is around made to steel nail and steel plate disengaging thoroughly, then use instrument that steel nail is screwed out, after all steel nails take out, the steel plate of fixing bone just can take out smoothly.
Claims (1)
1. an orthopaedics target drill, it is characterized in that: be by Hollow trepanning drilling machine (1), interior center-pole (2) and outer center-pole (3) form, wherein the head of Hollow trepanning drilling machine (1) is welded with milling cutter (4), milling cutter (4) is hollow, outer center-pole (3) is set in Hollow trepanning drilling machine (1), between the afterbody of outer center-pole (3) and Hollow trepanning drilling machine (1), be provided with thrust bearing (5), between the inwall of the outer wall of outer center-pole (3) and Hollow trepanning drilling machine (1), be provided with clutch shaft bearing (6) and the second bearing (7), the head of outer center-pole (3) is hollow, inside is coated with interior center-pole (2), between the afterbody of interior center-pole (2) and outer center-pole (3), be provided with spring (8), interior center-pole (2) is cylinder, on cylinder, be provided with at least one bar shaped feather key (22), the inwall of outer center-pole (3) offers strip groove (31), bar shaped feather key (22) is arranged in strip groove (31), the head end of interior center-pole (2) is six prisms (21), six prisms (21) can be inserted in the inner hexagonal hole of corresponding steel nail, interior center-pole (2) is through Hollow trepanning drilling machine (1), six prisms (21) are through milling cutter (4), the outer setting of Hollow trepanning drilling machine (1) has the first gear (9) and driving gear (10) engagement, driving gear (10) connects with the output shaft of motor (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272156.0U CN203841779U (en) | 2014-05-24 | 2014-05-24 | Orthopaedic special drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272156.0U CN203841779U (en) | 2014-05-24 | 2014-05-24 | Orthopaedic special drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203841779U true CN203841779U (en) | 2014-09-24 |
Family
ID=51554854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420272156.0U Expired - Fee Related CN203841779U (en) | 2014-05-24 | 2014-05-24 | Orthopaedic special drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203841779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490466A (en) * | 2015-01-07 | 2015-04-08 | 吉林大学 | Special orthopedic drill bit |
| CN109288553A (en) * | 2018-09-13 | 2019-02-01 | 张文君 | Medical orthopaedics punch |
-
2014
- 2014-05-24 CN CN201420272156.0U patent/CN203841779U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490466A (en) * | 2015-01-07 | 2015-04-08 | 吉林大学 | Special orthopedic drill bit |
| CN104490466B (en) * | 2015-01-07 | 2016-06-29 | 吉林大学 | A kind of orthopaedics target drill |
| CN109288553A (en) * | 2018-09-13 | 2019-02-01 | 张文君 | Medical orthopaedics punch |
| CN109288553B (en) * | 2018-09-13 | 2021-06-15 | 赵斌 | Medical bone perforator |
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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: 20140924 Termination date: 20150524 |
|
| EXPY | Termination of patent right or utility model |