CN205548659U - Fill formula biotype osteoporosis nature thighbone proximal fracture marrow internal fixation device - Google Patents
Fill formula biotype osteoporosis nature thighbone proximal fracture marrow internal fixation device Download PDFInfo
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- CN205548659U CN205548659U CN201620204980.1U CN201620204980U CN205548659U CN 205548659 U CN205548659 U CN 205548659U CN 201620204980 U CN201620204980 U CN 201620204980U CN 205548659 U CN205548659 U CN 205548659U
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Abstract
The utility model discloses a fill formula biotype osteoporosis nature thighbone proximal fracture marrow internal fixation device belongs to medical instrument technical field. Main nail, sleeve, hip screw and block in the marrow, it has the centre bore that runs through both ends to open on the hip screw, the screw distal end has the head, and head side and tip are opened to be had a plurality ofly and the communicating through -hole of hip screw centre bore, be provided with spiral cutting edge portion on the head, be formed with a recess between the adjacent spiral cutting edge portion, the coating has first mat surface coating in the cell wall of recess, the peripheral coating that the sleeve is close to the one end of head has second mat surface coating. Compared with the prior art: spiral cutting edge portion, sleeve tip can let the sclerotin hip screw surface of growing into with the mat surface coating on and to let the firm hip screw of controlling of sclerotin, can inject the fixative between hip screw and the sclerotin through trompil on hip screw centre bore, the hip screw pore wall, head through -hole, the anchor between reinforcing hip screw and the sclerotin is made a concerted effort.
Description
Technical field
This utility model relates to technical field of medical instruments, specifically a kind of filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device, is mainly used in during the operation of clinical orthopaedics fractured near end of thighbone particularly osteoporotic fractured near end of thighbone using.
Background technology
Increasingly increasing along with China accelerates into aging society, osteoporosis and osteoporotic fracture, osteoporotic fracture becomes serious medical treatment and social problem.Osteoporotic fracture is common in spinal column, hip, wrist and humerus proximal segment, and wherein fractured near end of thighbone is especially in increasing trend year by year.Osteoporotic fracture is by the pathologisch Bruch caused by slight external force, and the mechanics of general fracture, Biological characteristics have essential distinction.And the most clinically this type fracture is treated the internal fixation method using general fracture, lacking of property treatment measures.But due to osteoporosis, sclerotin is not provided that firm screw anchor is made a concerted effort, and adds delaying of union of fracture process, internal fixation treatment failure often occurs；And this type of patient base's disease is more, it is impossible to tolerance limitation of activity, often fatality rate is the highest.
Currently, fixing in osteoporotic fracture design and improvement have focused largely on and interior fixing optimize the aspects such as design, the improvement of internal fixation material and surgical technic be perfect.But these measures depend finally on by the self-strength of fixing bone, in fact, one of the most basic direct measure is that the anchor at once strengthening fixed position skeleton is made a concerted effort.
Summary of the invention
For solving above-mentioned technical problem, this utility model provides a kind of filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device.This utility model utilizes and is fixed agent around hip screw, filling such as biological bone cement, it is effectively improved the instantaneous stability that screw is fixing, matsurface coating in hip screw application has bone conductibility and osteoinductive simultaneously, New born formation about can be promoted, therefore can improve the long-time stability that screw is fixing.
This utility model is achieved through the following technical solutions: a kind of filling type biotype osteoporotic near end of thighbone Medullary fixation device, including nail main in marrow, inserts main that nail on end and mobilizable hip screw in being embedded in marrow and the sleeve being enclosed within hip screw；The acclivitous one end of described hip screw is screw far-end, and the downward-sloping one end of hip screw is screw near-end；
Also include the block being arranged on screw near-end；Described block seals up sleeve one end near screw near-end simultaneously；
Described hip screw is hollow structure, and it has the centre bore running through two ends；
Described screw far-end is fixed with head；Described head is column, and head side and end have multiple through hole communicated with hip screw centre bore；Head is provided with at least four circular knife blade, between adjoining spiral blade part, is formed with groove；The cell wall of described groove is coated with for increasing friction force and the first matsurface coating that beneficially sclerotin is grown into；
Described sleeve is coated with near the periphery of one end of head for increasing friction force and the second matsurface coating that beneficially sclerotin is grown into；
It is further: the quantity of described head through hole is 2-11.
The axis of described head through hole is intersected with hip screw centre bore axis；The axis irrelevancy row of at least two head through hole.
The first described matsurface coat periphery extends to the tip of circular knife blade.
Described sleeve is provided with a cannelure near the periphery of one end of head, and the second described matsurface coating is coated in this cannelure, and the second matsurface coating surface is connected with sleeve surface smooth-going.
The thickness of the second described matsurface coating is 0.1-0.5mm.
The first described matsurface coating and the second matsurface coating are hydroxyapatite coating layer or porous tantalum metal coating or sandblasting coating or plasma spray coating.
In described marrow, main nailing on has the first through hole passed for hip screw；The first described through hole is for being obliquely installed, and the first through hole is ellipticity；The described sleeve on hip screw is in the ellipticity coordinated with the first through hole.
In described marrow, the periphery of main nail lower end is provided with some cell bodies for dispersive stress；In marrow, main nail lower end is additionally provided with screw.
Described fixing device also includes the medical-grade plastics leather hose being communicated to hip screw centre bore, and the described medical-grade plastics leather hose other end connects ejector sleeve or syringe；After nail main in marrow, hip screw being installed in femur, by syringe, plastic cement leather hose, fixative is expelled between screw far-end, head and femur sclerotin.
This utility model provides the filling type biotype osteoporotic near end of thighbone Medullary fixation device of a kind of fractured near end of thighbone being particularly well-suited to old people.During this utility model has the advantage that hip screw compared with prior art at the circular knife blade of head and sleeve ends coating hydroxyapatite coating layer or porous tantalum metal coating or sandblasting coating or plasma spray coating, this hydroxyapatite coating layer or porous tantalum metal coating or sandblasting coating or plasma spray coating can allow sclerotin grow into hip screw surface, thus allow sclerotin firmly hold on hip screw, and obtain and fixedly secure, make hip screw be disperseed with the stress of bone interface simultaneously, avoid the occurrence of stress and concentrate the hip screw displacement caused, the phenomenon of fixation failure；Additionally, this utility model hip screw is hollow screw, i.e. have through centre bore, a perforate is at least offered on the hole wall of centre bore, perforate through centre bore hole wall, head has some through holes, irrigates fixative by the i.e. centre bore of hollow channel, such as biological bone cement, the anchor strengthening screw and hole sclerotin is made a concerted effort.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, main nail in marrow；11, the first through hole；12, cell body；2, hip screw；21, head；211, circular knife blade；212, groove；22, screw far-end；201, the first matsurface coating；202, the second matsurface coating；23, sleeve；24, block；3, upper cover；4, screw；5, syringe.
Detailed description of the invention
The following is a specific embodiment of the present utility model, in conjunction with accompanying drawing, this utility model is described further.
As shown in Figure 1, a kind of filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device, in marrow, main nail 1 is provided with upper cover 3, in marrow, main nail 1 top has the first through hole 11 passed for hip screw 2, first through hole 11 centrage has certain angle of inclination with main nail 1 centrage in marrow, and the first through hole 11 is in ellipticity；In marrow, the periphery of main nail 1 lower end is provided with some cell bodies 12 for dispersive stress, and in marrow, main nail lower end is additionally provided with for fixing screw.Sleeve 23 is in the ellipticity coordinated with the first through hole 11, and sleeve 23, through the first through hole 11, can not relatively rotate between main nail 1 in sleeve 23 and marrow.Hip screw 2 is through in sleeve 23, and hip screw 2 is hollow structure, and it has the centre bore running through two ends, and the hole wall of centre bore at least offers a perforate, perforate through centre bore hole wall；The acclivitous one end of hip screw 2 is screw far-end 22, and the downward-sloping one end of hip screw 2 is screw near-end.The screw near-end of hip screw 2 aligns with sleeve 23 one end, and block 24 is sealingly mounted at screw near-end and sleeve 23 one end simultaneously.Screw far-end 22 is fixed with in cylindrical head 21, and head 21 side and end have multiple through hole communicated with hip screw 2 centre bore；The quantity of head 21 through hole is 2～11, and the axis of head 21 through hole is intersected with hip screw 2 centre bore axis, the axis irrelevancy row of at least two of which head 21 through hole.Fixing device also includes the medical-grade plastics leather hose being communicated to hip screw 2 centre bore, and the medical-grade plastics leather hose other end connects ejector sleeve or syringe.By perforate on hip screw 2 centre bore, hip screw 2 hole wall, head 21 through hole can be by fixative, and such as biological bone cement pours between hip screw 2 and femur sclerotin, strengthens the anchor between hip screw 2 and femur sclerotin and makes a concerted effort.
Head 21 is provided with at least four circular knife blade 211, between adjoining spiral blade part 211, is formed with groove 212；Being coated with in the cell wall of groove 212 for increasing friction force and the first matsurface coating 201 that beneficially sclerotin is grown into, the first matsurface coating 201 periphery extends to the tip of circular knife blade 211.Sleeve 23 is provided with a cannelure near the periphery of one end of head 21, is coated with the second matsurface coating 202 in cannelure, and the second matsurface coating 202 surface is connected with the smooth-going of sleeve 23 surface；The thickness of the second matsurface coating 202 is 0.1-0.5mm.First matsurface coating 201 and the second matsurface coating 202 are hydroxyapatite coating layer or porous tantalum metal coating or sandblasting coating or plasma spray coating.This hydroxyapatite coating layer or porous tantalum metal coating or sandblasting coating or plasma spray coating can allow sclerotin grow into hip screw surface, thus allow sclerotin firmly hold on hip screw, and obtain and fixedly secure, make hip screw be disperseed with the stress of bone interface, it is to avoid to occur that stress concentrates hip screw displacement, the phenomenon of fixation failure caused simultaneously.
Claims (10)
1. a filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device, including nail (1) main in marrow, insert main nail (1) upper end in being embedded in marrow and mobilizable hip screw (2) and the sleeve (23) that is enclosed within hip screw (2)；Described hip screw (2) acclivitous one end is screw far-end (22), and the downward-sloping one end of hip screw (2) is screw near-end；
It is characterized in that:
Also include the block (24) being arranged on screw near-end；Described block (24) seals up sleeve (23) one end near screw near-end simultaneously；
Described hip screw (2) is hollow structure, and it has the centre bore running through two ends；
Described screw far-end (22) is fixed with head (21)；Described head (21) is in column, and head (21) side and end have multiple through hole communicated with hip screw (2) centre bore；Head (21) is provided with at least four circular knife blade (211), between adjoining spiral blade part (211), is formed with groove (212)；The cell wall of described groove (212) is coated with for increasing friction force and the first matsurface coating (201) that beneficially sclerotin is grown into；
Described sleeve (23) is coated with near the periphery of one end of head (21) for increasing friction force and the second matsurface coating (202) that beneficially sclerotin is grown into.
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 1, it is characterised in that: the quantity of described head (21) through hole is 2～11.
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 1 and 2, it is characterised in that: the axis of described head (21) through hole is intersected with hip screw (2) centre bore axis；The axis irrelevancy row of at least two head (21) through hole.
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 1, it is characterised in that: the first described matsurface coating (201) periphery extends to the tip of circular knife blade (211).
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 1, it is characterized in that: described sleeve (23) is provided with a cannelure near the periphery of one end of head (21), the second described matsurface coating (202) is coated in this cannelure, and the second matsurface coating (202) surface is connected with the smooth-going of sleeve (23) surface.
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 5, it is characterised in that: the thickness of the second described matsurface coating (202) is 0.1-0.5mm.
7. according to the filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device described in claim 1 or 4 or 6, it is characterised in that: the first described matsurface coating (201) and the second matsurface coating (202) they are hydroxyapatite coating layer or porous tantalum metal coating or sandblasting coating or plasma spray coating.
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 1, it is characterised in that: have the first through hole (11) passed for hip screw (2) in described marrow on main nail (1)；Described the first through hole (11) is for being obliquely installed, and the first through hole (11) is in ellipticity；The described sleeve (23) on hip screw (2) is in the ellipticity coordinated with the first through hole (11).
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 1, it is characterised in that: in described marrow, the periphery of main nail (1) lower end is provided with some cell bodies for dispersive stress (12)；In marrow, main nail (1) lower end is additionally provided with screw (4).
Filling type biotype osteoporotic fractured near end of thighbone Medullary fixation device the most according to claim 1, it is characterized in that: described fixing device also includes being communicated to the medical-grade plastics leather hose of hip screw (2) centre bore, and the described medical-grade plastics leather hose other end connects ejector sleeve or syringe (5)；After nail (1) main in marrow, hip screw (2) being installed in femur, by syringe (5), plastic cement leather hose, fixative is expelled to screw far-end (22), between head (21) and femur sclerotin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620204980.1U CN205548659U (en) | 2016-03-17 | 2016-03-17 | Fill formula biotype osteoporosis nature thighbone proximal fracture marrow internal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620204980.1U CN205548659U (en) | 2016-03-17 | 2016-03-17 | Fill formula biotype osteoporosis nature thighbone proximal fracture marrow internal fixation device |
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| CN205548659U true CN205548659U (en) | 2016-09-07 |
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| CN201620204980.1U Expired - Fee Related CN205548659U (en) | 2016-03-17 | 2016-03-17 | Fill formula biotype osteoporosis nature thighbone proximal fracture marrow internal fixation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105640629A (en) * | 2016-03-17 | 2016-06-08 | 欧阳晓 | Perfusion biological intramedullary fixation device for osteoporotic proximal femoral fracture |
-
2016
- 2016-03-17 CN CN201620204980.1U patent/CN205548659U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105640629A (en) * | 2016-03-17 | 2016-06-08 | 欧阳晓 | Perfusion biological intramedullary fixation device for osteoporotic proximal femoral fracture |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20210317 |