CN206007348U - Self-locking intramedullary nail of femur - Google Patents
Self-locking intramedullary nail of femur Download PDFInfo
- Publication number
- CN206007348U CN206007348U CN201620621244.6U CN201620621244U CN206007348U CN 206007348 U CN206007348 U CN 206007348U CN 201620621244 U CN201620621244 U CN 201620621244U CN 206007348 U CN206007348 U CN 206007348U
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- Prior art keywords
- nail
- main
- auxiliary
- screw blade
- self
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Abstract
The utility model provides a kind of self-locking intramedullary nail of femur, is related to orthopaedics technical field of medical instruments.Including main nail, auxiliary nail, screw blade nail, duct and tail cap, main nail distal end is provided with connecting portion, screw blade nail is socketed on connecting portion, and screw blade nail can be rotated freely by connecting portion, main nail distal end is circumferentially evenly arranged with the duct of outside diverging, and auxiliary nail is inserted in main nail, auxiliary nail is the pencil body being made up of the rigid needle of corresponding duct quantity, and rigid needle is passed from correspondingly duct, for uncovered structure, tail cap is connected at the uncovered structure of main nail and is connected with auxiliary nail in main nail main near-end of following closely.The utility model fully can pressurize to fracture line, effectively prevent bone rotary shifted.
Description
Technical field
The utility model is related to orthopaedics technical field of medical instruments, and in particular to a kind of self-locking intramedullary nail of femur.
Background technology
Fracture refers to a kind of disease for being caused bone parts or being ruptured completely due to reasons such as wound or pathology.That fractured controls
Treatment follows reset, fixation, functional training this three basic principles.Reset is that the fracture site that will be shifted over after fracture is again extensive
Answer normal or be close to original normal position, acted on recovering again the support of bone.After the reduction of the fracture, if without being fixedly secured, holding
Easily occur to shift again, therefore should give after the reduction of the fracture.
The conventional fixing means of fracture is divided into outer fixation and interior fixation.As internal fixation material, operation method are updated
And transformation of the people to fractures method idea, fracture now and be intended to surgical menopauses treatment more.Inside-fixture can be with
Marrow external fixer and Medullary fixation device is broadly divided into, from 19th century, bone plate is progressively used for elongated tubular with intramedullary nail
In the treatment of bone fracture.
Intramedullary nail is a kind of therapeutic medical orthopedic fixation device tool, and Chinese patent " a kind of femur strand lock intramedullary nail " (is authorized
Notification number CN203468719U) disclose a kind of femur and twist lock intramedullary nail, it includes near-end and nail rod, the two be structure as a whole and
For hollow；The nail rod end is distal end；The near-end is in horizontal positioned, and the nail rod is in one first jiao with the near-end place horizontal plane
Degree, the near-end are in a second angle with the nail rod place perpendicular；The near-end is provided with several through holes, and end is provided with connection
Hole；The distal end is provided with several through holes.The patent can play part and prevent fracture site twisting action, but can not control completely
The problems such as rotation of fracture site processed, horizontal fine motion.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of fully to fracture line pressurization, effectively prevent bone from rotating
The self-locking intramedullary nail of femur of dislocation.
In order to solve above-mentioned technical problem, the utility model provides a kind of self-locking intramedullary nail of femur, including main nail, auxiliary nail,
Screw blade nail, duct and tail cap, the main nail distal end are provided with connecting portion, and the screw blade nail is socketed in the connecting portion
On, and the screw blade nail can be rotated freely by the connecting portion, the main nail distal end is circumferentially evenly arranged with to outgoing
Scattered duct, the auxiliary nail are inserted in the main nail, and the auxiliary nail is to be made up of the rigid needle of the correspondingly duct quantity
Pencil body, and the rigid needle passed from corresponding duct, the main nail near-end is uncovered structure, and the tail cap is connected to the master
Be connected with the auxiliary nail at the uncovered structure of nail and in the main nail, with main, screw blade nail of the present utility model follows closely that be connected can
To rotate freely, during main nail is inserted, screw blade nail can provide lifting power enough after squeezing into distal end pine fracture, it is ensured that will
The lifting of fracture gap is eliminated.
Preferably, the screw blade nail includes ailhead, tail sleeve and pin, and the ailhead is provided with anti-rotation fin, dorsad described
Anti- rotation fin side is provided with the tail sleeve, and the tail sleeve is cylindrical hollow configuration, and the tail sleeve side is provided with pin hole, the pin
Nail is engaged with pin, and the screw blade nail of this structure is during main nail is inserted, it is easier to squeeze into distal end pine fracture energy
Enough offer lift enough power.
Preferably, the connecting portion is cylindrical structural, the cylindrical structural and the cylindrical hollow configuration gap
Coordinate, and cylindrical structural is circumferentially provided with annular groove, the pin is coordinated with the annular groove gap by pin hole, this
Structure ensure that the rotation of screw blade nail.
Preferably, the auxiliary nail is the pencil body being made up of three rigid needles, and the distal end of the main nail circumferentially uniformly sets
Three ducts are put, auxiliary nail of the present utility model is come in distal end bifurcated by the duct of main nail, insertion distal end pine fracture, Ke Yiyou
Effect prevents distal bone folded block from rotating, and prevents the failure that resets.
Preferably, the duct penetrates main nail from inside to outside in divergent shape, and forms auxiliary nail groove, this structure on main nail surface
Facilitate being mounted and taken out for auxiliary nail.
Preferably, the screw blade is nailed on and is provided with the groove being engaged with the auxiliary nail groove, and the groove is along circular knife
Piece nail is circumferential to be uniformly distributed, and auxiliary nail is come in distal end bifurcated by the duct of main nail, and after the pine fracture of insertion distal end, auxiliary nail is stuck in tail
Screw blade nail rotation is limited in the groove for putting.
Preferably, also include that near-end pinning and locking nail hole, the main nail near-end are provided with least one locking nail hole, the tail cap
The through hole corresponding with the locking nail hole is provided with, the locking nail hole and through hole are beaten after fracture line joint close through there is near-end pinning
Enter near-end pinning, fracture pressurization stress is effectively ensured, while can ensure that main nail is not rotated in pulp cavity.
Preferably, the main nail is shaped as arc, the radian phase of the radian of the arc and femoral bone cavitas medullaris anatomical shape
With.
The beneficial effects of the utility model：
1) original femur self-locking nail is insufficient to fracture line pressurization using on, and screw blade of the present utility model is followed closely and main nail
Connection can be rotated freely, and during main nail is inserted, distal end pine fracture squeezed into by screw blade nail needs to ensure which freely can revolve
Turn, lifting power enough can be provided after squeezing into pine fracture, it is ensured that the lifting of fracture gap is eliminated.
2) original femur self-locking nail distal end fixation is unstable, and anti-rotation performance is poor, and auxiliary nail of the present utility model passes through main nail
Duct come in distal end bifurcated, insertion distal end pine fracture, effectively can prevent distal bone folded block rotate, prevent reset failure.
3) tail cap that the utility model is arranged effectively prevents soft tissue from growing in the hollow die cavity of self-locking intramedullary nail of femur.
4) profile of main nail of the present utility model is the shape for meeting femoral bone cavitas medullaris anatomical angulation, convenient operation.
Description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and constitutes a part for specification, with this practicality
New embodiment is used for together explaining the utility model, does not constitute to restriction of the present utility model.In the accompanying drawings：
Structural representations of the Fig. 1 for the utility model self-locking intramedullary nail of femur；
Screw blade pin structure schematic diagrames of the Fig. 2 for the utility model self-locking intramedullary nail of femur；
Connecting portion structural representations of the Fig. 3 for the utility model self-locking intramedullary nail of femur；
Distal structure schematic diagrames of the Fig. 4 for the utility model self-locking intramedullary nail of femur；
Proximal structure schematic diagrames of the Fig. 5 for the utility model self-locking intramedullary nail of femur；
Auxiliary pin structure schematic diagrames of the Fig. 6 for the utility model self-locking intramedullary nail of femur.
It is labeled as in figure：1st, main nail；2nd, auxiliary nail；21st, rigid needle；3rd, screw blade nail；31st, ailhead；32nd, tail sleeve；4th, tail
Cap；41st, through hole；5th, connecting portion；51st, annular groove；6th, duct；61st, auxiliary nail groove；62nd, groove；7th, pin hole；8th, pin；9th, lock
Nail；10th, near-end pinning.
Specific embodiment
Preferred embodiment of the present utility model is described below in conjunction with the accompanying drawings.
As shown in Figures 1 to 6, a kind of self-locking intramedullary nail of femur of the present utility model, including main nail 1, auxiliary nail 2, circular knife
Piece nail 3, tail cap 4 and duct 6,1 distal end of main nail are provided with connecting portion 5, and screw blade nail 3 is socketed on connecting portion 5, and screw blade
Nail 3 can be rotated freely by connecting portion 5, and 1 distal end of main nail is circumferentially evenly arranged with the duct 6 of outside diverging, and auxiliary nail 2 is inserted in master
In nail 1, auxiliary nail 2 is the pencil body being made up of the rigid needle 21 of 6 quantity of corresponding duct, and rigid needle 21 is passed from correspondingly duct 6,
1 near-end of main nail is uncovered structure, and tail cap 4 is connected at the uncovered structure of main nail 1 and 2 is connected with auxiliary nail in main nail 1, this practicality
New screw blade nail 3 is connected and can rotate freely with main nail 1, and during main nail 1 is inserted, distal end squeezed into by screw blade nail 3
Can provide lifting power enough, it is ensured that the lifting of fracture gap is eliminated after pine fracture.
Screw blade nail 3 includes that ailhead 31, tail sleeve 32 and pin 8, ailhead 31 are provided with anti-rotation fin, and dorsad anti-rotation fin side sets
There is a tail sleeve 32, tail sleeve 32 is cylindrical hollow configuration, 32 side of tail sleeve is provided with pin hole 7, and pin hole 7 is engaged with pin 8, this
The screw blade nail 3 of structure is during main nail 1 is inserted, it is easier to squeezes into distal end pine fracture and can provide lifting power enough.
Connecting portion 5 is cylindrical structural, and cylindrical structural is coordinated with cylindrical hollow configuration gap, and cylindrical structural week
To annular groove 51 is provided with, pin 8 is coordinated with 51 gap of annular groove by pin hole 7, and this structure ensure that screw blade nail 3
Rotation.
Auxiliary nail 2 is the pencil body being made up of three rigid needles 21, and the distal end of main nail 1 is circumferentially uniformly arranged three ducts 6,
Auxiliary nail 2 of the present utility model is come in distal end bifurcated by the duct 6 of main nail 1, insertion distal end pine fracture, effectively can be prevented remote
End sclerite rotation, prevents the failure that resets.
Duct 6 penetrates main nail 1 from inside to outside in divergent shape, and forms auxiliary nail groove 61 on 1 surface of main nail, and this structure facilitates auxiliary
Nail 2 is mounted and taken out.
Screw blade nail 3 is provided with the groove 62 being engaged with auxiliary nail groove 61, and groove 62 is circumferential uniform along screw blade nail 3
Distribution, auxiliary nail 2 are come in distal end bifurcated by the duct 6 of main nail 1, and after the pine fracture of insertion distal end, auxiliary nail 2 is stuck in tail sleeve 32
Limit screw blade nail 3 to rotate in groove 62.
Also include locking nail hole 9 and near-end pinning 10,1 near-end of main nail is provided with least one locking nail hole 9, tail cap 4 be provided with
The corresponding through hole 41 of locking nail hole 9, locking nail hole 9 and through hole 41 squeeze into proximal lock through there is near-end pinning 10 after fracture line joint close
Nail 10, is effectively ensured fracture pressurization stress, while can ensure that main nail 1 is not rotated in pulp cavity.
Working method of the present utility model：
When actual operation is carried out, doctor prior to femur perforate, by 1 plant femur inner chamber of main nail to correspondence position, spiral
Distal end pine fracture squeezed into by blade nail 3, and along the auxiliary nail 2 of 1 bottom of chamber portion of main nail plant, one end of main nail 1 is provided with three circumferential holes of decile
Road 6, duct 6 penetrate main nail 1 from inside to outside in divergent shape, and auxiliary nail 2 is the pencil body of three compositions of rigid needle 21, and rigid needle 21 is certainly
Corresponding duct 6 passes, and accesses tail cap 4, compresses open-mouth of the tail cap 4 by auxiliary nail 2 along 1 inner chamber of main nail and inserts, and tail cap 4 is to auxiliary nail 2
Pencil body bottom produces pressure so that three rigid needles 21 of auxiliary nail 2 are fixed to assign and beaten after femur internal chamber wall, fracture line joint close
Enter near-end pinning 10 and be fixed in femoral cavity.The utility model increases the rotatable screw blade nail 3 in distal end, squeezes into distal end pine fracture
In can effectively connection, lifted by apparatus, fully fracture line pressurizeed, inside main nail 1, three auxiliary nails 2 are slotting by distal end bifurcated
Entering in the cancellous bone of distal end can effectively prevent bone rotary shifted, improve bone surgery quality.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, although ginseng
The utility model is described in detail according to previous embodiment, for a person skilled in the art, which still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent is carried out to which part technical characteristic.All
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvements that is made etc. should be included in this practicality
Within new protection domain.
Claims (6)
1. a kind of self-locking intramedullary nail of femur, it is characterised in that：Including main nail, auxiliary nail, screw blade nail, duct and tail cap, described
Main nail distal end is provided with connecting portion, and the screw blade nail is socketed on the connecting portion, and screw blade nail is by described
Connecting portion can be rotated freely, and the main nail distal end is circumferentially evenly arranged with the duct of outside diverging, and the auxiliary nail is inserted in described
In main nail, the auxiliary nail is the pencil body being made up of the rigid needle of the correspondingly duct quantity, and the rigid needle is from corresponding aperture
Road is passed, and for uncovered structure, the tail cap is connected at the uncovered structure of the main nail and in the main nail the main near-end of following closely
Interior be connected with the auxiliary nail, the screw blade is followed closely includes that ailhead, tail sleeve and pin, the ailhead are provided with anti-rotation fin, dorsad institute
State anti-rotation fin side and be provided with the tail sleeve, the tail sleeve is cylindrical hollow configuration, and the tail sleeve side is provided with pin hole, described
Pin hole is engaged with pin, and the connecting portion is cylindrical structural, the cylindrical structural and the cylindrical hollow configuration
Gap coordinates, and cylindrical structural is circumferentially provided with annular groove, and the pin is matched somebody with somebody with the annular groove gap by pin hole
Close.
2. self-locking intramedullary nail of femur according to claim 1, it is characterised in that：The auxiliary nail is to be made up of three rigid needles
Pencil body, and the distal end of the main nail is circumferentially uniformly arranged three ducts.
3. self-locking intramedullary nail of femur according to claim 1, it is characterised in that：Wear in divergent shape from inside to outside in the duct
Main nail thoroughly, and auxiliary nail groove is formed on main nail surface.
4. self-locking intramedullary nail of femur according to claim 3, it is characterised in that：The screw blade nail on be provided with described
The groove that auxiliary nail groove is engaged, the groove are circumferentially uniformly distributed along screw blade nail.
5. self-locking intramedullary nail of femur according to claim 1, it is characterised in that：Also include near-end pinning and locking nail hole, institute
State main nail near-end and be provided with least one locking nail hole, the tail cap is provided with the through hole corresponding with the locking nail hole, the pinning
Hole and through hole run through near-end pinning.
6. self-locking intramedullary nail of femur according to claim 1, it is characterised in that：The main nail is shaped as arc, described
The radian of arc is identical with the radian of femoral bone cavitas medullaris anatomical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620621244.6U CN206007348U (en) | 2016-06-22 | 2016-06-22 | Self-locking intramedullary nail of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620621244.6U CN206007348U (en) | 2016-06-22 | 2016-06-22 | Self-locking intramedullary nail of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206007348U true CN206007348U (en) | 2017-03-15 |
Family
ID=58242845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620621244.6U Withdrawn - After Issue CN206007348U (en) | 2016-06-22 | 2016-06-22 | Self-locking intramedullary nail of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206007348U (en) |
Cited By (2)
| 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 |
| CN110301969A (en) * | 2019-05-24 | 2019-10-08 | 浙江医院 | Intramedullary nail |
-
2016
- 2016-06-22 CN CN201620621244.6U patent/CN206007348U/en not_active Withdrawn - After Issue
Cited By (2)
| 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 |
| CN110301969A (en) * | 2019-05-24 | 2019-10-08 | 浙江医院 | Intramedullary nail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Fengzhen Jin Nan Lu Jin Zhangjiagang city Suzhou City, Jiangsu province 215600 (Jinfeng Technology Park A22, 26) Patentee after: Suzhou Jimei Rui medical equipment Limited by Share Ltd Address before: Fengzhen Jin Nan Lu Jin Zhangjiagang city Suzhou City, Jiangsu province 215600 (Jinfeng Technology Park A22, 26) Patentee before: Suzhou Ji Meirui Medical Devices Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20190308 |
|
| AV01 | Patent right actively abandoned |