CN2614635Y - Forked self-locking intramedullary nail of femur - Google Patents
Forked self-locking intramedullary nail of femur Download PDFInfo
- Publication number
- CN2614635Y CN2614635Y CN 03230898 CN03230898U CN2614635Y CN 2614635 Y CN2614635 Y CN 2614635Y CN 03230898 CN03230898 CN 03230898 CN 03230898 U CN03230898 U CN 03230898U CN 2614635 Y CN2614635 Y CN 2614635Y
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- nail
- femur
- self
- forked
- intramedullary
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Abstract
The utility model belongs to the medical appliance field, relating to an internal fixation femur marrow inner nail used for curing the femur backbone fracture in the surgical therapy. The utility model forms a forked femur self-lock marrow inner nail which has some certain radian. The near section of the marrow inner nail is two pinning which interlocked with each other. The far section is separated as Y-type, having strong self-lock ability and no need to interlock. The utility model can be used for curing the fracture of the femur backbone, in particular to the middle below section of the femur, and can avoid the multifarious operation in the surgery, shorten the surgery time, reduce the distress of the patient, the surgery frequency and the medical expenses. The utility model can also avoid the injury of the X-radiation to the operator and the patient, making the healing of the fracture more tendency to the physiology and quickly. The marrow inner nail has the advantages of low price, easy usage and easy to spread and apply in the hospitals at different levels.
Description
Technical field
This utility model belongs to medical instruments field, is specifically related to a kind of internal fixation femoral interlocking nail of surgical intervention fracture of shaft of femur.
Background technology
In recent years, along with the development of medical science, Chinese scholars has proposed fracture fixed viewpoint biology, has produced new fracture fixation method thus, and the interlocking intramedullary nail internal fixation method has become the first-selected therapy of clinical orthopaedics long bone fracture.Its advantage is that nearly far-end is all used horizontal interlocking, thereby reaches very firm fixing, and has strong anti-rotation performance.But in the clinical treatment practical operation, there is following defective in said method: 1, in the process of interlocking because of the existence of femur physiology curvature, distal locking is difficulty very, to technology and equipment requirements than higher; 2, adopt two-way interlocking, stress is very easily concentrated, easily produces broken nail and influences union of fracture.
Summary of the invention
The purpose of this utility model provides a kind of forked type femur self-locking intramedullary nail, can be used for Clinical Surgery's intramedullary pin internal fixation operation, solution causes a femoral interlocking intramedullary nail distal locking difficult technologies difficult problem because of femur physiology curvature, avoids using traditional intramedullary pin easily to produce the problem of broken nail.
This utility model adopts medical GB 317 rustless steels or memory alloy material to make forked type femur self-locking intramedullary nail.The nearly section of this intramedullary pin is two crosspin interlockings, and section far away is made " three forked types " separately shape because of its geometry that is adapted to the mid distal femur pulp cavity, has stronger self-lock ability, needn't interlocking.Described intramedullary pin total length (L) is 30-48cm, and the nail body is established 172-175 ° of radian (η) 6, is the main nail in top (1) and bottom elasticity forked nail (2) two parts, the diameter phi of main nail in bifurcation (A) 3 punishment
1Be 8.1-12.4mm, its structure is with known interlocking intramedullary nail, the diameter phi of elasticity forked nail
2Be 2.3-4.5mm, bifurcation A is located at the 16-26.6cm place of this intramedullary pin apart from main nail end, promptly count from main screw top end, 3/5 of this intramedullary pin total length deducts the 2cm place, begin to be divided into three forked structures, the initial bifurcation angle (α) 4 of described three forked structures is 3-10 °, along with crooked radian increases gradually, does not hold bifurcation angle (β) 5 can reach 30-50 °; Three furcated end 7a, 7b of furcated end 7, the maximum distance between the 7c are 4-8cm, and distance is 3-6cm between all the other any two ends.
This utility model is fixed because of the stereo-elastic that it has " post four sides ", adopts multiple spot, the multiaspect of axis to fix, and stress distribution is even, but accelerating union of bone fracture and can be avoided the injury of x-ray radiation to patient and patient, makes the healing of the fracture physiological that more becomes.
This intramedullary pin is used for the treatment of fracture of shaft of femur operation through clinical, especially for the distal fracture of femur operation, has obviously shortened operating time, has avoided in the art numerous and diverse operation and motorization to perform the operation, and has reduced the operation number of times, has reduced patient's misery and medical expense.
Use this utility model intramedullary pin operation technique simple, fix tightly has avoided using traditional intramedullary pin easily to produce the problem of broken nail, for treatment fracture of shaft of femur operation method provides a kind of new operating theater instruments.
Description of drawings:
Fig. 1 is a forked type femur self-locking intramedullary nail
Wherein 1 is main nail
The 2nd, the elasticity forked nail
The 3rd, bifurcation A
The 4th, initial bifurcation angle α
The 5th, do not hold bifurcation angle β
The 6th, radian η
The 7th, furcated end
Three furcated end wherein are respectively 7a, 7b, 7c.
The specific embodiment
Embodiment 1
Adopt medical GB 317 rustless steels routine to make forked type femur self-locking intramedullary nail, the intramedullary pin total length L is 30cm, and radian η is 173 °, makes main nail and makes the elasticity forked nail, the diameter phi of main nail with the lower part with top at bifurcation A
1Be 8.1mm, its structure is with known interlocking intramedullary nail; The diameter phi of elasticity forked nail
2Be 2.3mm; Count from main screw top end, bifurcation A is located at 3/5 of intramedullary pin total length (L) deducts the 2cm place, promptly A point=30 * 3/5-2=16cm place begins to be divided into three forked structures, and initial bifurcation angle α is made as 3 °, along with crooked radian increases gradually, do not hold bifurcation angle β can reach 30 °; Maximum distance between three furcated end a, b, the c (establish a, b 2 farthest) ab is 4cm, is respectively 3cm apart from ac, bc between all the other two ends.
Routine disinfection is standby.
Adopt medical memory alloy material routine to make forked type femur self-locking intramedullary nail, the intramedullary pin total length L is 48cm, and radian η is 174 °, makes main nail and makes the elasticity forked nail, the diameter phi of main nail with the lower part with top at bifurcation
1Be 12.4mm, the diameter phi of elasticity forked nail
2Be 4.5mm; Bifurcation A is positioned at 3/5 of this nail total length (L) and deducts 2cm place (counting from main screw top end), be that A point=48 * 3/5-2cm=26.6cm place begins to be divided into three forked structures, initial bifurcation angle α is 10 °, along with crooked radian increases gradually, does not hold bifurcation angle β can reach 50 °; Maximum distance between three furcated end a, b, the c (suppose a, b 2 farthest) ab is 8cm, is 6cm apart from ac, bc between all the other two ends.
Routine disinfection is standby.
Claims (8)
1, a kind of forked type femur self-locking intramedullary nail is characterized in that being made up of main nail and elasticity forked nail.
2,, it is characterized in that described intramedullary pin nail body radian is 172-175 ° by the described forked type femur of claim 1 self-locking intramedullary nail.
3,, it is characterized in that the elasticity forked nail of described intramedullary pin is three forked structures in bifurcation punishment by claim 1 and 2 described forked type femur self-locking intramedullary nails.
4,, it is characterized in that described intramedullary pin bifurcation is apart from main screw top end 16-26.6cm by the described forked type femur of claim 3 self-locking intramedullary nail.
5,, it is characterized in that described intramedullary pin adopts medical GB 317 rustless steels or memory alloy material to make by the described forked type femur of claim 1 self-locking intramedullary nail.
6, by the described forked type femur of claim 1 self-locking intramedullary nail, it is characterized in that it is 8.1-12.4mm that described intramedullary pin master follows closely diameter, its diameter of elasticity forked nail is 2.3-4.5mm.
7, by the described forked type femur of claim 3 self-locking intramedullary nail, it is characterized in that the initial bifurcation angle of described intramedullary pin trifid structure is 3-10 °, not holding bifurcation angle is 30-50 °.
8, by the described forked type femur of claim 3 self-locking intramedullary nail, it is characterized in that distance is 4-8cm between the described intramedullary pin furcated end, distance is 3-6cm between all the other any two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230898 CN2614635Y (en) | 2003-05-06 | 2003-05-06 | Forked self-locking intramedullary nail of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230898 CN2614635Y (en) | 2003-05-06 | 2003-05-06 | Forked self-locking intramedullary nail of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2614635Y true CN2614635Y (en) | 2004-05-12 |
Family
ID=34247848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03230898 Expired - Fee Related CN2614635Y (en) | 2003-05-06 | 2003-05-06 | Forked self-locking intramedullary nail of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2614635Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102599970A (en) * | 2012-03-31 | 2012-07-25 | 杨永竑 | Backbone internal fixing system |
-
2003
- 2003-05-06 CN CN 03230898 patent/CN2614635Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102599970A (en) * | 2012-03-31 | 2012-07-25 | 杨永竑 | Backbone internal fixing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |