CN2369639Y - Intramedullary pin with self locking device at remote end - Google Patents
Intramedullary pin with self locking device at remote end Download PDFInfo
- Publication number
- CN2369639Y CN2369639Y CN 99227961 CN99227961U CN2369639Y CN 2369639 Y CN2369639 Y CN 2369639Y CN 99227961 CN99227961 CN 99227961 CN 99227961 U CN99227961 U CN 99227961U CN 2369639 Y CN2369639 Y CN 2369639Y
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- CN
- China
- Prior art keywords
- locking device
- far
- needle body
- needle
- pin
- 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 relates to an intramedullary pin with a self locking device on the remote end of the pin. The utility model relates to an orthopaedic device for operative treatment and is an intramedullary pin with a self locking device with the forking type remote end of the pin. The utility model is suitable for treating fractures of a humerus, a femur and a tibia and has a structure provided with a pin body. The utility model is characterized in that the intramedullary pin with a self locking device on the remote end of the pin is also provided with a regulating nut, a pin core and a closing screw. The remote end of the pin body is provided with symmetrical long waist-shaped holes. The pin core is arranged in the pin body. The tail of the pin core forms a dividing blade structure. The upper part of the pin core is provided with the regulating nut and the end part of the near end of the pin body is provided with the closing screw. The tail of the pin body is provided with an end plug, and a tail hole of the pin body forms a boss.
Description
What the intramedullary needle of a kind of far-end band of this utility model self-locking device related to is a kind of bone surgery therapeutic device, is applicable to humerus, femur, fracture of tibia treatment, has the intramedullary needle of distal portion V shape self-locking device.
Existing intramedullary needle far-end locking device adopts self-locking nail location usually, and structure is owed rationally, locks not firmly, extracts difficulty, sometimes even cause the trouble of iatrogenic fracture.
The purpose of this utility model is to exist weak point that a kind of intramedullary needle of far-end band self-locking device is provided at present intramedullary needle far-end locking, and it is simple in structure, and locking is reliable, and mounting or dismounting are convenient.
A kind of intramedullary needle of far-end band self-locking device takes following scheme to realize: the intramedullary needle structure of far-end band self-locking device is by needle body, adjusting nut, nook closing member, bolt, closed screw constitutes, the nail body becomes certain radian, needle body far-end (lower end) has symmetrical long waist shaped hole, and penetrate inwall, its section sloping structure, the needle body afterbody is provided with plug, leaflet changes direction and struts along the slope bifurcated of needle body when needle body afterbody endoporus being diminished form boss, eject needle body along long waist shaped hole, needle body lower end, the nook closing member afterbody after bifurcated struts reaches the purpose of self-locking to the bone inwall by resiliency supported.The nook closing member upper unit has adjusting nut, and adjusting nut is used to regulate the bifurcated extension elongation of nook closing member far-end, and bolt is arranged on the needle body near-end, and bolt is used to locate the fixing of back nook closing member.The needle body near-end is provided with near-end self-locking nail hole, and device near-end self-locking nail is fixed by certain apparatus during use.Needle body near-end (top) end fitting has closed screw, can prevent the sclerotin needle body inside of growing into.
The intramedullary needle of this utility model far-end band self-locking device as do from collum chirurgicum humeri to the olecranon fossa of humerus lower end in three cm range any position type the treatment of humeral apparatus is arranged, be a kind of humerus intramedullary needle with distal portion V shape self-locking device.This intramedullary needle fully takes into account fracture and show powerful sticking extruding separation and anti-rotation performance in biomechanics, and inserting and taking out of the nook closing member of intramedullary needle and needle body is very convenient.This utility model is reasonable in design, and is simple in structure, and locking is reliable, and mounting or dismounting are convenient.
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is this utility model structural representation.
Fig. 2 is this utility model needle structure sketch map.
Fig. 3 is this utility model nook closing member structural representation.
With reference to accompanying drawing, a kind of intramedullary needle structure of far-end band self-locking device is made of needle body 1, adjusting nut 2, nook closing member 3, bolt 4, closed screw 6.1 one-tenth certain radian of nail body, needle body far-end (lower end) has symmetric two or more long waist shaped holes 7, penetrates inwall, its end face sloping structure, needle body 1 afterbody is provided with plug 9, and nail body 1 afterbody endoporus is diminished, and forms boss.Nook closing member 3 devices are in needle body 1, nook closing member afterbody composition impeller structure 8, when nook closing member 3 inserts needle body 1, leaflet 8 strutted along needle body slope bifurcated when the nook closing member afterbody was run into the boss of plug 9 in the needle body, eject needle body along long waist shaped hole, needle body lower end (far-end) 7, the nook closing member afterbody after bifurcated struts reaches the purpose of self-locking to the bone inwall by resiliency supported.The long waist shaped hole 7 that above-mentioned needle body lower end (far-end) is provided with, plug 9, nook closing member 3 portion impeller structures 8 and adjusting nut 2, bolt 4 have constituted this utility model distal portion V shape self-locking device.
With reference to accompanying drawing 1,2, this utility model needle body 1 two ends become certain radian, the centre is in line, needle body far-end (lower end) has two or more symmetric long waist shaped holes 7, penetrate inwall, its section sloping, needle body 1 afterbody is provided with plug 9 and has corresponding inclined-plane, with the needle body afterbody endoporus formation boss that diminishes, needle body 1 near-end (top) has female thread 10, be used to screw in bolt 4 and closed screw 6, bolt 4 external screw threads are connected with needle body female thread 10, prop up nook closing member 3 upper ends by the bolt end face and play fixation.Needle body 1 near-end (top) is processed with near-end self-locking nail hole 11, is used for device near-end self-locking nail 5 so that the intramedullary pin proximally-located is fixed.Closed screw 6 external screw threads have been connected sealing process with nail body female thread 10, prevent sclerotin needle body 1 inside of growing into.
With reference to accompanying drawing 1,3, this utility model nook closing member top is processed with screw thread 12 and has been connected regulating action with adjusting nut 2, nook closing member afterbody (far-end) becomes two leaflets 8 or divides impeller structure more than two, divides the inboard one-tenth of blade tip circular-arc, and the state after the locking of insertion needle body 1 bifurcated is a dotted portion.
Claims (7)
1. the intramedullary needle of a far-end band self-locking device, has needle body, it is characterized in that also having adjusting nut, nook closing member, closed screw, the needle body far-end has symmetrical long waist shaped hole, the nook closing member device is in needle body, nook closing member afterbody composition impeller structure, the nook closing member upper unit has adjusting nut, and needle body proximal end device has closed screw.
2. a kind of far-end according to claim 1 has the intramedullary needle of self-locking device, it is characterized in that the needle body afterbody is provided with plug, makes needle body afterbody endoporus form boss.
3. a kind of far-end band self-locking device intramedullary needle according to claim 1 is characterized in that the needle body two ends become certain radian, and the centre is in line.
4. the intramedullary needle of a kind of far-end band self-locking device according to claim 1 is characterized in that the needle body near-end has female thread to be used to screw in bolt.
5. the intramedullary needle of a kind of far-end band self-locking device according to claim 1 is characterized in that the needle body far-end has two or more symmetric long waist shaped holes, penetrates inwall, its section sloping.
6. the intramedullary needle of a kind of far-end band self-locking device according to claim 1 is characterized in that nook closing member top has screw thread to be connected with adjusting nut.
7. the intramedullary needle of a kind of far-end band self-locking device according to claim 1 is characterized in that the nook closing member afterbody becomes two leaflets or divides impeller structure more than two, divides the inboard one-tenth of blade tip circular-arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227961 CN2369639Y (en) | 1999-04-06 | 1999-04-06 | Intramedullary pin with self locking device at remote end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227961 CN2369639Y (en) | 1999-04-06 | 1999-04-06 | Intramedullary pin with self locking device at remote end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2369639Y true CN2369639Y (en) | 2000-03-22 |
Family
ID=34017411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99227961 Expired - Fee Related CN2369639Y (en) | 1999-04-06 | 1999-04-06 | Intramedullary pin with self locking device at remote end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2369639Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997213A (en) * | 2016-06-22 | 2016-10-12 | 苏州吉美瑞医疗器械有限公司 | Auto-locking intramedullary nail for thighbone |
-
1999
- 1999-04-06 CN CN 99227961 patent/CN2369639Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997213A (en) * | 2016-06-22 | 2016-10-12 | 苏州吉美瑞医疗器械有限公司 | Auto-locking intramedullary nail for thighbone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |