CN209490077U - A kind of double-deck micrometer screw of fracture fixation - Google Patents
A kind of double-deck micrometer screw of fracture fixation Download PDFInfo
- Publication number
- CN209490077U CN209490077U CN201822073887.3U CN201822073887U CN209490077U CN 209490077 U CN209490077 U CN 209490077U CN 201822073887 U CN201822073887 U CN 201822073887U CN 209490077 U CN209490077 U CN 209490077U
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- China
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- outer tube
- bone nail
- deck
- double
- knochenbruch
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Abstract
The utility model relates to a kind of double-deck micrometer screws of fracture fixation, the locking steel plate is attached at knochenbruch, drilling is set on knochenbruch, clamping or the upper end of a bone nail is screwed tight in the aperture, the lower end of bone nail one is set with an outer tube, the outer tube is protruded into and is fixed in the drilling, filling degradable material between the outer rim of the lower end of the bone nail of the outer tube inner edge and Qi Nei.In the utility model, when body fluid is entered in outer tube by open-work, through-hole or outer sleeve upper opening and gradually degradation material is made to degrade, make gap occur between bone nail lower end and outer tube, knochenbruch has healed and has carried out normal growth at this time, and bone nail can have lesser free gap, make the extruding reduction for locking steel plate to knochenbruch two sides, is conducive to the normal growth of knochenbruch.
Description
Technical field
The utility model relates to fracture fixations to be improved with Bone nail structureTechnical field, pair of especially a kind of fracture fixation
Layer micrometer screw.
Background technique
Fracture is that complete or incomplete fracture occurs, performs the operation when serious, leads to after bone is hit by external force
It crosses bone nail locking steel plate is fixed at knochenbruch, the knochenbruch at both ends is bonded.Locking steel plate be one substantially with bone shaped
Adaptable metal plate produces multiple apertures thereon, these apertures include fixation hole and extruded hole, and the bone nail fixed is general
It is made using resistant materials such as stainless steel or titanium alloys.The lower end outer rim of above-mentioned screw is formed with external screw thread, and upper end diameter is larger
And upper surface has fluting, in use, the tissue near fracture is first cut, then in two side opening of knochenbruch, by locking steel plate patch
On bone, Interal fixation will be locked at knochenbruch by screw.Find in actual use, most start to need to lock steel plate and
Screw forms effective extruding to knochenbruch both ends, to guarantee disconnected symphysis, but wants to reduce after the healing of later period knochenbruch
Extruding force otherwise when knochenbruch is grown, and locks the state that steel plate is still within extruding, this sclerotin occurs when knochenbruch can be made to grow
Loose problem causes recovery time in later period elongated, is unfavorable for the early rehabilitation of sufferer.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide screw lower end outer rim be set with outer tube and
Therebetween there is degradation material, a kind of fracture of certain space can be provided to screw after degradation material degradation
The fixed double-deck micrometer screw.
The technical scheme adopted by the utility model is that:
A kind of double-deck micrometer screw of fracture fixation, including steel plate is locked, there is aperture, feature on the locking steel plate
Be: the locking steel plate is attached at knochenbruch, and drilling is arranged on knochenbruch, clamping or screws tight the upper end of a bone nail in the aperture
The lower end in portion, bone nail one is set with an outer tube, which protrudes into and be fixed in the drilling, in the outer tube
Filling degradable material between the outer rim of the lower end of the bone nail of edge and Qi Nei, the degradation material can be by the lower ends of bone nail
And outer tube is fixed to each other and makes occur gap between the lower end of bone nail and outer tube after degradation.
Further more, the outer sleeve upper opening and bone nail upper end bottom surface retention gap, outer tube outer rim are formed with external screw thread,
Outer tube bottom surface is provided with through-hole.
Further more, the upper end of the bone nail is provided with multiple open-works from upper surface to bottom surface.
Further more, the upper end opening of the outer tube is located at the outside of one side opening of drilling, the outer tube bottom surface, which is located at, is bored
The outside of another side opening in hole.
Further more, the open-work is 1~3, the through-hole is 3~6.
Further more, the degradation material is polylactic acid.
Further more, the gap between the outer tube and the lower end of bone nail is 0.5~1 millimeter.
Further more, the outer sleeve upper opening covers one layer of chitosan biomembrane, one is covered at the outer tube inner bottom surface
Layer chitosan biomembrane.
The advantages and positive effects of the utility model are as follows:
In the utility model, the bone nail installed in locking steel plate is double-layer structure, i.e. the lower end of bone nail is inlaid in housing
It is fixed together in pipe and by degradation material between the two, the external screw thread of outer tube outer rim will be integrally attached to knochenbruch two
The drill hole of side, the upper end of bone nail will lock Interal fixation in the side of knochenbruch, and open-work, outer tube bottom is arranged in bone nail upper end
Through-hole, outer sleeve upper opening one layer of chitosan biomembrane of covering is arranged in face.In use, working as body fluid passes through open-work, through-hole or outer
Sleeve upper end opening enters in outer tube and gradually degradation material is made to degrade, and makes between occurring between bone nail lower end and outer tube
Gap, knochenbruch has healed and has carried out normal growth at this time, and bone nail can have lesser free gap, makes to lock steel plate to knochenbruch
The extruding of two sides reduces, and is conducive to the normal growth of knochenbruch.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the right view of Fig. 1.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, and it is not limited that following embodiments, which are illustrative,
, the protection scope of the utility model cannot be limited with following embodiments.
A kind of double-deck micrometer screw of fracture fixation as shown in Figure 1, 2, 3, including locks steel plate 1, on the locking steel plate
With aperture 2, the innovation of the utility model is: locking steel plate is attached at knochenbruch 6, the setting drilling 12 on knochenbruch, in aperture
The lower end 9 of clamping or the upper end 3 for screwing tight a bone nail, bone nail one is set with an outer tube 7, which protrudes into and fix
In drilling, filling degradable material 8 between the outer rim of the lower end of the bone nail of outer tube inner edge and Qi Nei, degradation material energy
The lower end of bone nail and outer tube are fixed to each other and make occur gap between the lower end of bone nail and outer tube after degradation.
In the present embodiment, bone nail lower end can have the structure outwardly protruded, such as: axially disposed convex block etc.,
More firm the purpose is to connect fixed lower end with outer tube, guaranteeing can be effective when installing
It is locked at drill hole.External screw thread can be set in bone nail upper end, and aperture makes matched helicitic texture.It can also be using as schemed
The section of 1 structure, aperture is rounding taper type, can block bone nail upper end.
The upper end opening of outer tube is located at the outside of one side opening of drilling, and the outer tube bottom surface is located at the drilling other side and opens
The outside of mouth.
Outer sleeve upper opening 14 and bone nail upper end bottom surface retention gap 15, outer tube outer rim is formed with external screw thread, housing
Tube bottom face 11 is provided with through-hole 10.The upper end of bone nail is provided with multiple open-works 4 from upper surface to bottom surface.Open-work is 1~3
A, the through-hole is 3~6.
Degradation material is polylactic acid.Gap between outer tube and the lower end of bone nail is 0.5~1 millimeter.
In order to increase the time of degradation, it can be open in outer sleeve upper and cover one layer of chitosan biomembrane 13, in housing
One layer of chitosan biomembrane is covered at pipe inner bottom surface.
The use process of the utility model is:
Locking steel plate is pressed at knochenbruch, and bone nail upper-end part of driving is in tapping, and for bone nail lower end in drilling, body fluid can be with
It is flow to outer sleeve upper opening by the gap 5 of open-work, locking steel plate and knochenbruch, the bottom surface of outer tube can also be flow to
Place
Firstly, body fluid makes chitosan biological membrane degradation, subsequently into outer tube, gradually polylactic acid is made to degrade, finally made
Gap is generated between bone nail lower end and outer tube, ensure that bone nail lower end obtains certain mobile space.
In the utility model, the bone nail installed in locking steel plate is double-layer structure, i.e. the lower end of bone nail is inlaid in housing
It is fixed together in pipe and by degradation material between the two, the external screw thread of outer tube outer rim will be integrally attached to knochenbruch two
The drill hole of side, the upper end of bone nail will lock Interal fixation in the side of knochenbruch, and open-work, outer tube bottom is arranged in bone nail upper end
Through-hole, outer sleeve upper opening one layer of chitosan biomembrane of covering is arranged in face.In use, working as body fluid passes through open-work, through-hole or outer
Sleeve upper end opening enters in outer tube and gradually degradation material is made to degrade, and makes between occurring between bone nail lower end and outer tube
Gap, knochenbruch has healed and has carried out normal growth at this time, and bone nail can have lesser free gap, makes to lock steel plate to knochenbruch
The extruding of two sides reduces, and is conducive to the normal growth of knochenbruch.
Claims (8)
1. a kind of double-deck micrometer screw of fracture fixation, including steel plate is locked, there is aperture, feature exists on the locking steel plate
In: the locking steel plate is attached at knochenbruch, and drilling is arranged on knochenbruch, clamping or screws tight the upper end of a bone nail in the aperture
The lower end in portion, bone nail one is set with an outer tube, which protrudes into and be fixed in the drilling, in the outer tube
Filling degradable material between the outer rim of the lower end of the bone nail of edge and Qi Nei, the degradation material can be by the lower ends of bone nail
And outer tube is fixed to each other and makes occur gap between the lower end of bone nail and outer tube after degradation.
2. a kind of double-deck micrometer screw of fracture fixation according to claim 1, it is characterised in that: on the outer tube
End opening and bone nail upper end bottom surface retention gap, outer tube outer rim are formed with external screw thread, and outer tube bottom surface is provided with through-hole.
3. a kind of double-deck micrometer screw of fracture fixation according to claim 2, it is characterised in that: the bone nail it is upper
End is provided with multiple open-works from upper surface to bottom surface.
4. a kind of double-deck micrometer screw of fracture fixation according to claim 3, it is characterised in that: the outer tube
Upper end opening is located at the outside of one side opening of drilling, and the outer tube bottom surface is located at the outside for another side opening that drills.
5. a kind of double-deck micrometer screw of fracture fixation according to claim 4, it is characterised in that: the open-work is 1
~3, the through-hole is 3~6.
6. a kind of double-deck micrometer screw of fracture fixation according to claim 5, it is characterised in that: the degradable material
Material is polylactic acid.
7. a kind of double-deck micrometer screw of fracture fixation according to claim 6, it is characterised in that: the outer tube with
Gap between the lower end of bone nail is 0.5~1 millimeter.
8. a kind of double-deck micrometer screw of fracture fixation according to claim 7, it is characterised in that: on the outer tube
End opening covers one layer of chitosan biomembrane, covers one layer of chitosan biomembrane at the outer tube inner bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822073887.3U CN209490077U (en) | 2018-12-11 | 2018-12-11 | A kind of double-deck micrometer screw of fracture fixation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822073887.3U CN209490077U (en) | 2018-12-11 | 2018-12-11 | A kind of double-deck micrometer screw of fracture fixation |
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| Publication Number | Publication Date |
|---|---|
| CN209490077U true CN209490077U (en) | 2019-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822073887.3U Active CN209490077U (en) | 2018-12-11 | 2018-12-11 | A kind of double-deck micrometer screw of fracture fixation |
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| Country | Link |
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| CN (1) | CN209490077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112155701A (en) * | 2020-10-10 | 2021-01-01 | 江山市人民医院 | Adjustable screw for calcaneus |
-
2018
- 2018-12-11 CN CN201822073887.3U patent/CN209490077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112155701A (en) * | 2020-10-10 | 2021-01-01 | 江山市人民医院 | Adjustable screw for calcaneus |
| CN112155701B (en) * | 2020-10-10 | 2023-03-28 | 江山市人民医院 | Adjustable screw for calcaneus |
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