CN208464236U - A kind of humerus head hollow nail with boniness cement side opening - Google Patents
A kind of humerus head hollow nail with boniness cement side opening Download PDFInfo
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- CN208464236U CN208464236U CN201720810799.XU CN201720810799U CN208464236U CN 208464236 U CN208464236 U CN 208464236U CN 201720810799 U CN201720810799 U CN 201720810799U CN 208464236 U CN208464236 U CN 208464236U
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- nail
- hole
- hollow
- bone cement
- hollow nail
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Abstract
The utility model discloses a kind of band boniness cement side opening humerus head hollow nails, are made of ailhead, nail rod and nail tail；The nail rod is provided centrally with hollow nail hole, the hollow nail hole designs for blind hole, and the hollow nail hole is open at one end in nail tail, and the other end terminates at the ailhead, / 2nd regions are provided with single thread before the hollow nail hole, have and are provided with 10 or so bone cement tap holes at screw thread；The utility model is using the hollow nail hole of blind hole, single thread and orientation bone cement tap hole design, bore dia proportion is flowed out with when thread pitch and bone cement by hollow nail outer diameter and internal diameter, under the premise of ensuring that hollow nail intensity prevents hollow nail to be broken, multiple and different direction bone cement tap holes ensure bone cement energy efficiently and uniformly diffuse in screw and humerus head cancellous space, effectively improve the resisting pull out forces and stability of screw, it prevents hollow nail from loosening, move back the complication such as nail, improve success rate of operation.
Description
Technical field
The utility model relates to a kind of orthopedic medical device technical equipment field, in particular to a kind of band boniness cement side opening
Humerus head hollow nail.
Background technique
Proximal humeral fracture is common in the gerontal patient with osteoporosis, and incidence has the tendency that gradually increasing.Mesh
Preceding incidence ranked third position in common fragility fractures, account for about the 10% of over-65s senile fracture's quantity.Humerus is close
End fracture is easily displaced under the action of rotator cuff in the case where sclerotin is not good enough.Still in open reduction internal fixation operation
Face many difficulties.Since humerus different parts bone density differs greatly, the highest position of density is under cartilage, and proximal humerus
Other parts are then comparatively loose.Therefore, proximal humeral fracture reset difficulty is larger, resets and is easy failure, and complication is easy
Occur.
In existing humerus locking steel plate technology, humerus head needs at least to squeeze into 5 pieces of mono cortex spiral shells under the perspective of positive side position
Nail, the safe length of screw is in 45-55mm, since screw length is limited, the spy of proximal humerus osteoporosis and humerus rotation
Property, it is easy to produce the complication of screw abjection, Unstable internal fixation.And phenomenon may be glanced off during screw loosening, it leads
Neurotrosis is caused, sequelae is caused, damages blood vessel, patient will be in peril of one's life, and safety is poor.
Closely related factor is screw designs, merging screw quality, screw-bone interface with humerus hollow nail stability
With the connection of screw, wherein key is screw-bone interface and screw designs.Bone density is positively correlated with screw stability, and
For screw due to length limitation, ailhead is in the more loose position of proximal humerus sclerotin, therefore is clinically easy to produce spiral shell at present
Follow closely the complication of abjection, Unstable internal fixation.And since screw intensity limits, it is clinically easy to appear the complication of broken nail.
Utility model content
The purpose of this utility model is to provide a kind of humerus head hollow nails with boniness cement side opening, for the prior art
Deficiency, the utility model passes through shank central hollow nail hole and injected bone water using hollow nail hole and the bone cement tap hole with orientation
Mud, boniness cement tap hole ensure bone cement energy efficiently and uniformly diffuse in humerus head, can obviously increase after bone cement solidification
The resistance to plucking output capacity of humerus hollow nail, effectively prevent hollow nail to loosen, and improves success rate of operation.Meanwhile passing through hollow nail outer diameter
With internal diameter with when thread pitch and bone cement outflow bore dia proportion, it is ensured that hollow nail intensity effectively prevent hollow nail to be broken.
In order to achieve the above objectives, the technical solution of the utility model is as follows: a kind of humerus head with boniness cement side opening is empty
Heart nail, including ailhead, nail rod and nail tail, the ailhead are bullet, are sharp self tapping structure；The ailhead and nail rod one end
Connection, nail rod other end connected nail tail；The nail rod is cylindrical structure, and the nail rod is provided centrally with hollow nail hole, described
Hollow nail hole designs for blind hole, and the hollow nail hole is open at one end in nail tail, and the other end is terminated in apart from nail rod and ailhead company
Meet place 1cm, the hollow nail hole is provided with several bone cement tap holes close to ailhead end, the bone cement tap hole with it is hollow
Nail hole is axially vertical, and the bone cement tap hole is two-way through-hole, and penetrates through with the hollow nail hole, several described bone cements
Axially spaced-apart is arranged between tap hole, and radially configures each other in fixed angle；List is provided with outside the nail rod
Line screw thread, the nail rod form transition by circular arc with the nail tail and connect.
In the utility model, the hollow nail length is 50mm-70mm, and different model is suitable for the patient of different building shape；
The nail rod outer diameter is 6mm-9mm, and the hollow nail hole outer diameter is 2.10mm-3.15mm, the hollow nail hole outer diameter and nail rod
Outer diameter ratio is 7:20.
In the utility model, the nail rod is equipped with single thread, the single line in the half region of ailhead side
Thread pitch is 1.0mm-1.4mm, and the single thread screw pitch and the nail rod outer diameter ratio are 1:10.
In the utility model, the bone cement tap hole is axially set in nail rod and is equipped with list close to ailhead side half
In the position of line screw thread, the bone cement tap hole is radially distributed between the adjacent bone cement tap hole equipped with 8-10
Spacing it is equal, the bone cement tap hole is circle, and bone cement outflow bore dia is 0.8mm-1.2mm, the bone water
Mudflow goes out bore dia and the thread pitch ratio is 2:3.
In the utility model, the material of the ailhead, nail rod and nail tail is all made of titanium alloy material.
In the utility model, the nail tail is equipped with inner hexagon hollow hole, and the nail rod other end protrudes into the inner hexagon hollow of nail tail
In hole.
Through the above technical solutions, the beneficial effect of technical solutions of the utility model is: the utility model using hollow nail hole with
Bone cement tap hole with orientation flows out bore dia with bone cement with when thread pitch with internal diameter by hollow nail outer diameter and matches
Than, it is ensured that hollow nail intensity effectively prevent hollow nail to be broken, and injects bone cement, boniness cement by shank central hollow nail hole
Tap hole ensures bone cement energy efficiently and uniformly diffuses in humerus head, can obviously increase humerus hollow nail after bone cement solidification
Resistance to plucking output capacity, effectively prevent hollow nail to loosen, and improves success rate of operation.Simultaneously because ailhead can be against humerus subchondral bone
The highest position of cortical bone density, hollow nail stability are greatly improved, will not generate screw abjection, Unstable internal fixation and
Send out disease.
Detailed description of the invention
Fig. 1 is a kind of hollow pin structure of humerus head with boniness cement side opening disclosed in the utility model embodiment,
(a) main view, (b) top view；
Figure label: 1. ailheads, 2. nail rods, 3. single threads, 4. bone cement tap holes, 5. hollow nail hole, 6. nail tails.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1: according to Fig. 1, the utility model provides a kind of band orientation bone cement side opening humerus head hollow nail, including
Ailhead 1, nail rod 2, single thread 3, bone cement tap hole 4, hollow nail hole 5 and nail tail 6.
The humerus head hollow nail is made of ailhead 1, nail rod 2, nail tail 6, and the ailhead 1, nail rod 2 and nail tail 6 are whole
Metal material titanic alloy machining is constituted, and the ailhead 1 is bullet, is designed for sharp self tapping；The ailhead 1 is connect with nail rod 2；
The nail rod 2 is cylindrical body, and the nail rod 2 is provided centrally with hollow nail hole 5, and the hollow nail hole 5 designs for blind hole, described
Hollow nail hole 5 nail tail 6 open at one end, the other end terminate in after the ailhead 1 at 1cm, and the hollow nail hole 5 is set close to 1 end of ailhead
Multiple bone cement tap holes 4 are equipped with, the bone cement tap hole 4 and hollow nail hole 5 are axially vertical, the bone cement tap hole 4
For two-way through-hole, and penetrated through with the hollow nail hole 5, axially spaced-apart setting between the multiple bone cement tap hole 4, and edge
It is radial to be configured each other in fixed angle；Single thread 3, the nail rod 2 and the nail tail 8 are provided with outside the nail rod 2
It is connected by arc-shaped transition；The nail tail has inner hexagon hollow hole.
The hollow nail length range is 50mm-70mm, and the hollow nail different model is suitable for the patient of different building shape,
The hollow nail nail rod external diametrical extent is 6mm-9mm, and the hollow nail nail rod inside diameter ranges are 2.10mm-3.15mm, the sky
Heart nail internal diameter and outer diameter ratio are maintained at 7:20(0.35), there are single thread, the list in half region before the nail rod
Line thread pitch is 1.0mm-1.4mm, and the screw pitch and the nail rod outer diameter ratio are 1:10.
The hollow nail has threaded portion to be provided with 10 or so bone cement tap holes, and the bone cement tap hole is two-way
Through-hole, and penetrated through with the hollow nail hole, axially spaced-apart setting between the multiple bone cement tap hole, the bone cement outflow
Radially distributed spacing is equal between hole, and radially each other in fixed angle configure, guarantee same warp with
Any two bone cement tap hole projects overlapping area less than 10% on weft, and the bone cement tap hole is circle, the bone water
It is 0.8mm-1.4mm that mudflow, which goes out bore dia, and the bone cement outflow bore dia and the thread pitch ratio are 2:3.
By above-mentioned specific embodiment, the beneficial effect of technical solutions of the utility model is: the utility model uses hollow nail hole
With the bone cement tap hole with orientation, bore dia is flowed out with bone cement with when thread pitch with internal diameter by hollow nail outer diameter and is matched
Than, it is ensured that hollow nail intensity effectively prevent hollow nail to be broken, and injects bone cement, boniness cement by shank central hollow nail hole
Tap hole ensures bone cement energy efficiently and uniformly diffuses in humerus head, can obviously increase humerus hollow nail after bone cement solidification
Resistance to plucking output capacity, effectively prevent hollow nail to loosen, and improves success rate of operation.Simultaneously because ailhead can be against humerus subchondral bone
The highest position of cortical bone density, hollow nail stability are greatly improved, will not generate screw abjection, Unstable internal fixation and
Send out disease.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of humerus head hollow nail with boniness cement side opening, which is characterized in that including ailhead, nail rod and nail tail, the nail
Head is bullet, is sharp self tapping structure；The ailhead is connect with nail rod one end, nail rod other end connected nail tail；The nail
Bar is cylindrical structure, and the nail rod is provided centrally with hollow nail hole, and the hollow nail hole designs for blind hole, the hollow nail
Hole is open at one end in nail tail, and the other end is terminated in apart from nail rod and ailhead junction 1cm, and the hollow nail hole is set close to ailhead end
Several bone cement tap holes are equipped with, the bone cement tap hole and hollow nail hole are axially vertical, and the bone cement tap hole is
Two-way through-hole, and penetrated through with the hollow nail hole, axially spaced-apart setting between several described bone cement tap holes, and along diameter
It is configured between to each other in fixed angle；Single thread is provided with outside the nail rod, the nail rod and the nail tail pass through circle
Arc forms transition connection.
2. a kind of humerus head hollow nail with boniness cement side opening according to claim 1, which is characterized in that the sky
It is 50mm-70mm that the heart, which follows closely length, and different model is suitable for the patient of different building shape；The nail rod outer diameter is 6mm-9mm, the sky
Heart nail hole outer diameter is 2.10mm-3.15mm, and the hollow nail hole outer diameter and nail rod outer diameter ratio are 7:20.
3. a kind of humerus head hollow nail with boniness cement side opening according to claim 1, which is characterized in that the nail
Bar is equipped with single thread in the half region of ailhead side, and the single thread screw pitch is 1.0mm-1.4mm, the list
Line thread pitch and the nail rod outer diameter ratio are 1:10.
4. a kind of humerus head hollow nail with boniness cement side opening according to claim 1, which is characterized in that the bone
Cement tap hole is axially set in nail rod in the position that ailhead side half is equipped with single thread, the bone cement stream
Portal and be equipped with 8-10, radially distributed spacing is equal between the adjacent bone cement tap hole, the bone cement tap hole
For circle, the bone cement outflow bore dia is 0.8mm-1.2mm, the bone cement outflow bore dia and the thread pitch ratio
Example is 2:3.
5. a kind of humerus head hollow nail with boniness cement side opening according to claim 1, which is characterized in that the nail
The material of head, nail rod and nail tail is all made of titanium alloy material.
6. a kind of humerus head hollow nail with boniness cement side opening according to claim 1, which is characterized in that the nail
Tail is equipped with inner hexagon hollow hole, and the nail rod other end protrudes into the inner hexagon hollow hole of nail tail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720810799.XU CN208464236U (en) | 2017-07-06 | 2017-07-06 | A kind of humerus head hollow nail with boniness cement side opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720810799.XU CN208464236U (en) | 2017-07-06 | 2017-07-06 | A kind of humerus head hollow nail with boniness cement side opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208464236U true CN208464236U (en) | 2019-02-05 |
Family
ID=65203156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720810799.XU Expired - Fee Related CN208464236U (en) | 2017-07-06 | 2017-07-06 | A kind of humerus head hollow nail with boniness cement side opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208464236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112386327A (en) * | 2020-11-13 | 2021-02-23 | 毕建平 | Fracture fixing system adopting negative pressure environment and bone cement single-hole injection and working method |
-
2017
- 2017-07-06 CN CN201720810799.XU patent/CN208464236U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112386327A (en) * | 2020-11-13 | 2021-02-23 | 毕建平 | Fracture fixing system adopting negative pressure environment and bone cement single-hole injection and working method |
| CN112386327B (en) * | 2020-11-13 | 2022-06-03 | 毕建平 | Fracture fixing system adopting negative pressure environment and bone cement single-hole injection and working method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20210706 |