CN204671265U - A kind of orthopaedics gets nail drill bit - Google Patents
A kind of orthopaedics gets nail drill bit Download PDFInfo
- Publication number
- CN204671265U CN204671265U CN201520356698.0U CN201520356698U CN204671265U CN 204671265 U CN204671265 U CN 204671265U CN 201520356698 U CN201520356698 U CN 201520356698U CN 204671265 U CN204671265 U CN 204671265U
- Authority
- CN
- China
- Prior art keywords
- trocar sheath
- hollow boring
- boring bit
- spring
- bearings
- 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
A kind of orthopaedics gets nail drill bit, there is hollow boring bit, connecting rod and spring, connecting rod one end is connected with the threads of hollow boring bit, hollow boring bit is built with the trocar sheath being engaged flexible connection mutually, inner sleeve, trocar sheath is provided with rear end cap, firm head is equipped with in inner sleeve front end, firm head is provided with the rib face of indent, in spring is placed in, in trocar sheath, spring one end is connected with end cap, the other end is connected with firm head, two bearings are housed between trocar sheath and hollow boring bit, with the inwall clamping of hollow axle outside two bearings, with the outer wall clamping of trocar sheath inside two bearings.
Description
Technical field:
This utility model provides a kind of orthopaedics to get nail drill bit.
Background technology:
At the orthopaedics of modern hospital, fixing because needing to use internal fixation screw to realize local in a large amount of fracture and bone disease treatment, internal fixation screw because of metal fatigue or when taking out surprisingly etc. reason easily there is screw extraction, nail tail is embedded in sclerotin, takes out difficulty, wherein the most insoluble problem is that nail tail exposes again, existing broken nail takes out multiplex core drill, destroys normal sclerotin and fully exposes broken nail nail tail.In the process using core drill, because operative site and core drill cannot be fixed, drill bit swings, and causes sclerotin face to destroy excessive, affects sclerotin intensity.Uneven with drilling force degree, firmly light repeatedly broken nail can not be followed closely tail with brill and expose do not reach taking-up object completely, required time is long, has firmly weighed and has drilled, made operative failure.
Utility model content:
The purpose of this utility model is to provide a kind of orthopaedics and gets nail drill bit, and it is stable that this technology drill bit of use gets nail, and bone destruction face is little, and dynamics should be grasped, and disposablely can complete the object that nail tail exposes, save operating time.
The technical solution of the utility model is: orthopaedics gets nail drill bit, there is hollow boring bit, connecting rod and spring, it is characterized in that: connecting rod one end is connected with the threads of hollow boring bit, hollow boring bit is built with inner sleeve, trocar sheath, in, trocar sheath is engaged flexible connection mutually, trocar sheath rear end is provided with end cap, firm head is equipped with in inner sleeve front end, firm head is provided with the rib face of indent, in spring is placed in, in trocar sheath, spring one end is connected with end cap, the other end is connected with firm head, two bearings are housed between trocar sheath and hollow boring bit, with the inwall clamping of hollow boring bit outside two bearings, with the outer wall clamping of trocar sheath inside two bearings.
The utility model has the advantages that: on firm head, the rib face of indent first contacts broken nail nail tail, taper work surface in hollow boring bit front end could contact sclerotin under the effect of the pressure, make hollow boring bit Concentric rotation, get nail stable, dynamics should be grasped, and sclerotin face is destroyed in controlled range, bone destruction face is little, and the bone destruction face after brill is in tapered plane spill, and nail tail exposes completely, conveniently carry out the link of getting nail, dismounting, cleaning, sterilization, save operating time.
Accompanying drawing explanation
Fig. 1 is the structural representation that this utility model orthopaedics gets nail drill bit.
Convex edge, 8 inner sleeves, 9 firm heads, the rib face of 10 indents, 11 jump rings, 12 bearings, 13 spring stacks, 14 nuts in 1 connecting rod, 2 rear end caps, 3 hollow boring bits, 4 trocar sheaths, 5 springs, 6 outer convex edges, 7 in figure.
Detailed description of the invention
Orthopaedics gets nail drill bit, there is hollow boring bit 3, connecting rod 1 and spring 5, one end of connecting rod is connected with the threads of hollow boring bit, the other end of connecting rod is connected with electric drill power, hollow boring bit is built with the trocar sheath 4 being engaged flexible connection mutually, inner sleeve 8, trocar sheath is provided with rear end cap 2, inner sleeve front end is equipped with firm 9, firm head is provided with the rib face 10 of indent, in spring is placed in, in trocar sheath, spring one end is connected with end cap, the other end is connected with firm head, two bearings 12 are housed between trocar sheath and hollow boring bit, with the inwall clamping of hollow axle outside two bearings, with the outer wall clamping of trocar sheath inside two bearings.
As shown in Figure 1, the flexible connection that trocar sheath, inner sleeve are engaged mutually is realized by following structure, one end of inner sleeve to be placed in trocar sheath and to be flexibly connected with trocar sheath, the outer wall that inner sleeve is placed in trocar sheath one end is provided with outer convex edge 6, the inwall of trocar sheath one end corresponding to inner sleeve is provided with interior convex edge 7, two convex edges are relative, thus realize the flexible connection that trocar sheath is engaged mutually with inner sleeve; In this enforcement: described hollow boring bit leading portion work surface is tapered, tail end is threaded with connecting rod and locks, and connecting rod has the nut 14 for strengthening locking effect; Described two bearings is by being located at shoulder on trocar sheath outer wall and hollow boring bit inwall and jump ring 11 is separately fixed at applicable position, namely hollow boring bit inwall is provided with convex shoulder and jump ring, trocar sheath outer wall is provided with convex shoulder, is fixed the position of two bearings by the cooperation of position relationship; Described rear end bar is fixed with spring stack 13, spring and spring stack pivot bush unit, object is the spring body for firm spring, prevents spring bending to be out of shape, and the height of described spring stack is not higher than convex edge in trocar sheath.
Claims (1)
1. an orthopaedics gets nail drill bit, there is hollow boring bit, connecting rod and spring, it is characterized in that: connecting rod one end is connected with the threads of hollow boring bit, hollow boring bit is built with inner sleeve, trocar sheath, in, trocar sheath is engaged flexible connection mutually, trocar sheath rear end is provided with end cap, firm head is equipped with in inner sleeve front end, firm head is provided with the rib face of indent, in spring is placed in, in trocar sheath, spring one end is connected with end cap, the other end is connected with firm head, two bearings are housed between trocar sheath and hollow boring bit, with the inwall clamping of hollow boring bit outside two bearings, with the outer wall clamping of trocar sheath inside two bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520356698.0U CN204671265U (en) | 2015-05-25 | 2015-05-25 | A kind of orthopaedics gets nail drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520356698.0U CN204671265U (en) | 2015-05-25 | 2015-05-25 | A kind of orthopaedics gets nail drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204671265U true CN204671265U (en) | 2015-09-30 |
Family
ID=54170996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520356698.0U Expired - Fee Related CN204671265U (en) | 2015-05-25 | 2015-05-25 | A kind of orthopaedics gets nail drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204671265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691574A (en) * | 2015-11-16 | 2017-05-24 | 孔庆华 | Drill bit for department of orthopaedics |
| CN108294819A (en) * | 2018-02-09 | 2018-07-20 | 上海市东方医院 | Restricted trepan |
-
2015
- 2015-05-25 CN CN201520356698.0U patent/CN204671265U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691574A (en) * | 2015-11-16 | 2017-05-24 | 孔庆华 | Drill bit for department of orthopaedics |
| CN108294819A (en) * | 2018-02-09 | 2018-07-20 | 上海市东方医院 | Restricted trepan |
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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: 20150930 Termination date: 20160525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |