CN206526102U - Tension band crab-bolt - Google Patents
Tension band crab-bolt Download PDFInfo
- Publication number
- CN206526102U CN206526102U CN201621265322.XU CN201621265322U CN206526102U CN 206526102 U CN206526102 U CN 206526102U CN 201621265322 U CN201621265322 U CN 201621265322U CN 206526102 U CN206526102 U CN 206526102U
- Authority
- CN
- China
- Prior art keywords
- nut
- passage
- tension band
- bolt
- crab
- 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 is related to tension band crab-bolt, effectively solve bilateral bone cortex drilling or the unilateral cortex of bone of plain screw is fixed, not only add wound, extend the recovery time of patient, produce skin excitation, the problem of screw is unstable can also be caused, there is up big and down small through hole in the middle part of nut, being fitted together in through hole has and shape of through holes identical inversed taper platform shape bolt cap, there is the tightening latch being connected as a single entity the bottom of inversed taper platform shape bolt cap, tightening latch is vertically arranged in the lower section of nut, circumferentially arranged with passage inside nut, the import and export of at least two stretching nuts on passage, steel wire is coated with passage, two free ends of steel wire are each passed through two and import and export stretching, the utility model more can easily adjust needles combined with tension band direction, it is more uniformly stressed crab-bolt, more stablize, nut height is reduced simultaneously, effectively reduce skin excitation incidence, improve patient's recovery situation.
Description
Technical field
The utility model is related to medical instruments field, particularly a kind of tension band crab-bolt for tension band wire system.
Background technology
Currently for closed fracture of medial malleolus, Normal practice is that general anesthesia menisectomy takes internal malleolus rear otch, open bone
Folding suitably expands otch along former wound.Appear fracture end, removing will with towel clamp towel forceps after articular cavity hematocele and broken bone piece, anatomical reduction
Maximum sclerite is fixed temporarily, from the outside parallel Kirschner wire for piercing 2 diameter 1.0mm in top of internal malleolus point, depth 6-7cm,
A bone hole is bored on shin bone at astragalus folding 5-6cm, 1.0mm steel wires bone hole is introduced into, in fracture line surface crosswise, rotating around 2
Kirschner wire is tightened, but this fracture of medial malleolus block reset Kirschner wire intersects after interior fix, and need to drill through shin bone bilateral cortex of bone and carry out steel
Thread tension band cross-fixing, drilling through for bilateral cortex of bone not only adds wound, can also extend the recovery time of patient.Or
Diameter 3.5mm 1 piece of bone screw or cancellous bone screw is screwed on shin bone at astragalus folding 5-6cm, perpendicular to facies medialis tibiae,
Or slightly upwardly 0 ° -15 ° of inclination, 1.0mm steel wires are bypassed into screw, are pressed on the head of a nail between bone face and the head of a nail, if using common
Winding steel wire tension band cross-fixing after screw one side cortex of bone is fixed, can cause the head of a nail not fitted with bone face, screw easily loosens,
Nut protrusion bone plane is too high simultaneously, and the skin excitation formed to a certain extent causes discomfort, and influence recovers.
The content of the invention
For above-mentioned situation, to overcome prior art defect, the purpose of the utility model is just to provide a kind of tension band anchor
Bolt, can effectively solve bilateral bone cortex drilling or the unilateral cortex of bone of plain screw is fixed, and not only add wound, extension patient's
Recovery time, skin excitation is produced, the unstable a series of problems of screw can be also caused.
The technical scheme that the utility model is solved is, including nut and tightening latch, has up big and down small through hole in the middle part of nut,
In through hole be fitted together to have with shape of through holes identical inversed taper platform shape bolt cap, constitute demountable structure, the bottom of inversed taper platform shape bolt cap has
The tightening latch being connected as a single entity, tightening latch is vertically arranged in inside the lower section of nut, nut circumferentially arranged with passage, at least two on passage
Stretch out and steel wire is coated with the import and export of nut, passage, two free ends of steel wire are each passed through two and import and export stretching.
The utility model is a kind of unilateral cortex of bone tension band crab-bolt, is effectively meeting the base of needles combined with tension band cross-fixing
On plinth, innovative improvement has been carried out to nut, needles combined with tension band direction more can have easily been adjusted, make crab-bolt stress more equal
It is even, more stable, while reducing nut height（Original head of a nail height 5mm, the utility model height 2mm）, effectively reduce skin
Skin excitation incidence, improves patient's recovery situation.
Brief description of the drawings
Fig. 1 is structural front view of the present utility model.
Fig. 2 is nut top view of the present utility model.
Embodiment
Embodiment of the present utility model is elaborated below in conjunction with accompanying drawing.
Provided by Fig. 1-Fig. 2, structure of the present utility model is, including nut and tightening latch, the middle part of nut 1 has up big and down small
Through hole, being fitted together in through hole has and shape of through holes identical inversed taper platform shape bolt cap 2, constitutes demountable structure, inversed taper platform shape bolt cap
Bottom have a tightening latch 3 being connected as a single entity, tightening latch is vertically arranged in inside the lower section of nut, nut circumferentially arranged with passage 4, on passage
Steel wire 6 is coated with the import and export 5 of at least two stretching nuts, passage, two free ends of steel wire are each passed through two and entered
Outlet is stretched out.
Described nut 1 is in symmetrical convex in plane, the left and right sides being parallel to each other for circular or front and rear sides
The arc surfaced risen.
The all edges and corner that the top surface of described nut 1 and bottom surface are connected are circular arc, prevent from scratching skin, reduce skin
Skin excitation.
Described passage 4 is semi-circular shape.
Described nut 1 is that front and rear sides are in that plane, the left and right sides that are parallel to each other are in the arc of symmetrical outwardly convex
Planar, when two import and export of passage are opened in the front side of nut, the nut portion on edge is in the top of passage 4 and the top of passage 4
Arc protrudes the rear side of nut 1；When nut is that front and rear sides are in symmetrical convex in plane, the left and right sides being parallel to each other
The arc surfaced risen, when two import and export of passage are opened in the rear side of nut, the nut on edge is equal in the top of passage 4 and the top of passage 4
The front side of curved protrusion nut 1.
Described tightening latch 3 is self-tapping screw structure.
The height of described nut 1 is 2mm, and length is 9mm, upper a diameter of 5mm of through hole, under a diameter of 3.2mm.
Described passage 4 is diameter 0.5-1mm circle.
The a diameter of 3.2mm of inner thread of described tightening latch 3, the outer a diameter of 3.5mm of Luo lines, highly be 10mm-25mm.
The utility model is a kind of bolt structure of improvement, more convenient on the basis of stability is ensured, nut can be around
The rotation of inversed taper platform shape bolt cap, beneficial to adjustment steel wire pulling force direction, makes stress evenly more stable, steel wire can make steel through passage
Silk is more firm, is not susceptible to skew and slides, while reducing nut height, effectively reduces skin excitation incidence, improves and suffer from
Person's recovery situation, the fixation of unilateral cortex of bone can reduce intraoperative hemorrhage, be conducive to the recovery healing that patient is postoperative, wherein, by spiral shell
Cap be designed to front and rear sides be in be parallel to each other it is plane when, be to increase surgical field of view.The utility model is equally applicable to
Patellar fracture, olecranal fracture, fracture of clavicle, unstability phalangeal fracture, dislocation of acromioclavicular joint, dislocation of sternoclavicular joint etc.
Tension band fixation system is used, and the utility model uniform force, safety and stability, using effect are good, time saving and energy saving, are conducive to patient's art
Recovery afterwards, there is good economic and social benefit.
Claims (9)
1. a kind of tension band crab-bolt, including nut and tightening latch, it is characterised in that nut（1）Middle part have up big and down small through hole,
Being fitted together in through hole has and shape of through holes identical inversed taper platform shape bolt cap（2）, constitute demountable structure, the bottom of inversed taper platform shape bolt cap
There is the tightening latch being connected as a single entity（3）, tightening latch is vertically arranged in inside the lower section of nut, nut circumferentially arranged with passage（4）, passage is up to
The import and export of rare two stretchings nut（5）, steel wire is coated with passage（6）, two free ends of steel wire are each passed through two
Import and export and stretch out.
2. tension band crab-bolt according to claim 1, it is characterised in that described nut（1）For circular or front and rear sides
It is in the arc surfaced of symmetrical outwardly convex in plane, the left and right sides that are parallel to each other.
3. tension band crab-bolt according to claim 1, it is characterised in that described nut（1）Top surface and bottom surface connection
Week along and corner be circular arc.
4. tension band crab-bolt according to claim 2, it is characterised in that described passage（4）For semi-circular shape.
5. tension band crab-bolt according to claim 4, it is characterised in that described nut（1）It is that front and rear sides are in mutual
Parallel plane, the left and right sides is in the arc surfaced of symmetrical outwardly convex, and two of passage are imported and exported the front side for being opened in nut
When, passage（4）Top and passage（4）The curved protrusion nut of the nut portion on edge in top（1）Rear side；Before nut is
Both sides are in that plane, the left and right sides that are parallel to each other are in the arc surfaced of symmetrical outwardly convex afterwards, and two import and export of passage are opened
In the rear side of nut, passage（4）Top and passage（4）The curved protrusion nut of the nut on edge in top（1）Front side.
6. tension band crab-bolt according to claim 1, it is characterised in that described tightening latch（3）For self-tapping screw structure.
7. tension band crab-bolt according to claim 1, it is characterised in that described nut（1）Height be 2mm, length
For 9mm, upper a diameter of 5mm of through hole, under a diameter of 3.2mm.
8. tension band crab-bolt according to claim 1, it is characterised in that described passage（4）For diameter 0.5-1mm circle
Shape.
9. tension band crab-bolt according to claim 1, it is characterised in that described tightening latch（3）Inner thread it is a diameter of
3.2mm, the outer a diameter of 3.5mm of Luo lines, highly be 10mm-25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265322.XU CN206526102U (en) | 2016-11-24 | 2016-11-24 | Tension band crab-bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265322.XU CN206526102U (en) | 2016-11-24 | 2016-11-24 | Tension band crab-bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206526102U true CN206526102U (en) | 2017-09-29 |
Family
ID=59922192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621265322.XU Expired - Fee Related CN206526102U (en) | 2016-11-24 | 2016-11-24 | Tension band crab-bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206526102U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112587217A (en) * | 2020-12-15 | 2021-04-02 | 宜兴市人民医院 | Screw for bone fixation |
-
2016
- 2016-11-24 CN CN201621265322.XU patent/CN206526102U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112587217A (en) * | 2020-12-15 | 2021-04-02 | 宜兴市人民医院 | Screw for bone fixation |
| CN112587217B (en) * | 2020-12-15 | 2022-02-11 | 宜兴市人民医院 | Screw for bone fixation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 Termination date: 20181124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |