CN209916183U - Broken nail extracting device for femoral intramedullary nail - Google Patents
Broken nail extracting device for femoral intramedullary nail Download PDFInfo
- Publication number
- CN209916183U CN209916183U CN201920415529.8U CN201920415529U CN209916183U CN 209916183 U CN209916183 U CN 209916183U CN 201920415529 U CN201920415529 U CN 201920415529U CN 209916183 U CN209916183 U CN 209916183U
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- nail
- taking
- femoral intramedullary
- broken
- intramedullary nail
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Abstract
The utility model discloses a disconnected nail remove device for femoral intramedullary nail, include the pole that takes out that forms by the pressfitting of memory alloy material, it separately forms disconnected nail take-out portion to take out the pole front end, two landing legs that disconnected nail take-out portion set up including bilateral symmetry, the landing leg front end all sets up the tooth hook. The utility model discloses simple structure, low cost, it is easy and simple to handle, avoid increasing the operation wound, shorten the operation time, reduce wound infection risk.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to broken nail remove device for femoral intramedullary nail.
Background
Intramedullary nail fixation for femoral fracture is the current mainstream treatment mode; however, the fracture of the femur is not healed and the fracture is not connected, and the fracture of the intramedullary nail is often accompanied, and further operation treatment is needed; the problem that an orthopaedics doctor is troublesome because broken intramedullary nails often need to be taken out through an operation; in the prior art, the broken nail is generally taken out after the femur distal end is grooved or the kirschner wire is bent, and due to the mode, the operation wound is large, the operation difficulty is increased, the time consumption is long, and the smooth operation and the postoperative rehabilitation of a patient are not facilitated.
Therefore, the key to solve the problem is to develop a broken nail extraction device of the femoral intramedullary nail, which is beneficial to reducing trauma, is beneficial to the early movement of a patient after operation, and is simple and convenient to operate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, the operation is easy and simple to handle, reduces the operation wound, efficient broken nail remove device of femoral intramedullary nail.
The utility model aims at realizing like this, include the pole that takes out that forms by the pressfitting of memory alloy material, it separately forms disconnected nail take-out portion to take out the pole front end, two landing legs that disconnected nail take-out portion set up including bilateral symmetry, the landing leg front end all sets up the tooth hook.
The utility model discloses following technological effect has:
1. according to the characteristic that the NiQin memory alloy material generates memory deformation in the temperature range of 0-40 ℃, and in combination with the optimization design of human engineering, the tail end of the broken intramedullary nail is fixed by utilizing the dynamic pressure generated in the variation process when the supporting legs are separated, so that the increase of trauma caused by the slotting of the distal end of the femur is avoided;
2. the utility model is provided with the tooth hook, thereby increasing the holding force of the broken nail taking-out part and the intramedullary far end and the occlusion force with the broken nail tail end, being more beneficial to fixing the broken nail tail end of the intramedullary nail and being convenient for the operation in the operation;
3. the utility model discloses simple structure, it is easy and simple to handle, avoid increasing the operation wound, shorten the operation time, reduce wound infection risk.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the open state of the broken nail removing part of the present invention;
FIG. 3 is a schematic view showing a closed state of the broken nail removing part of the present invention;
FIG. 4 is a top view of FIG. 3;
in the figure: 1-taking out rod, 2-broken nail taking-out part, 201-supporting leg, 202-toothed hook and 3-tail hole.
Detailed Description
The following description of the present invention is provided with reference to the accompanying drawings, which are not intended to limit the present invention in any way, and any alterations or replacements made based on the teachings of the present invention are all within the protection scope of the present invention.
As shown in the attached drawings 1-4, the utility model discloses a take out pole 1 that is formed by the pressfitting of memory alloy material, it separately forms disconnected nail take-out part 2 to take out the pole front end, two landing legs 201 that disconnected nail take-out part set up including bilateral symmetry, landing leg 201 front end all sets up tooth hook 202.
The memory alloy material is a nickel-titanium memory alloy material.
The tail end of the taking-out rod 1 is provided with a tail hole 3, and auxiliary equipment can be arranged on the tail hole to facilitate pulling of the taking-out rod.
The taking-out rod 1 is a cylinder.
The diameter of the cylinder is 1.5-3 mm.
The supporting legs 201 are in transition connection with the taking-out rod 1 in a natural arc shape.
The opening angle between the two legs 201 is 30-60 degrees.
The opening angle between the two legs 201 is 45 degrees.
The thickness of the legs 201 is gradually reduced from the transition of the extraction rod 1 to the front end.
The thickness of the front end of the supporting leg (201) is 0.6-1.4 mm.
The utility model discloses theory of operation and working process: according to the characteristic that the NiQin memory alloy material generates memory deformation in the temperature range of 0-40 ℃, the tail end of the broken intramedullary nail is fixed by utilizing dynamic pressure generated in the change process, and the increase of trauma caused by the slotting of the distal end of the femur is avoided. Firstly, the utility model is put into ice brine at 0 ℃ to soften the device, and the two support legs 201 of the broken nail taking-out part 2 are folded and closed; then inserting the broken nail taking-out part 2 with the support legs 201 folded and closed into the tail end of the broken nail in the femoral medullary cavity, wetting and compressing the device by hot saline water of 40 ℃, wherein under the action of the body temperature of a patient and the hot saline water, the temperature of the broken nail taking-out part 2 rises, the martensitic effect of the nickel-titanium memory alloy plate generates dynamic soft pressure, the restoring force generated by the two support legs 201 in the form restoring process naturally reversely engages and fixes the tail end of the broken nail, and the tooth-shaped structure of the tooth hook 202 prevents the broken nail from slipping; then the tail end of the taking-out rod 1 is directly pulled or the broken nail is taken out by the auxiliary taking-out rod through auxiliary equipment such as an operation suture line, an operation hook, operation forceps and the like.
Claims (10)
1. A broken nail extraction device for a femoral intramedullary nail is characterized in that: the nail taking-out device comprises a taking-out rod (1) formed by pressing a memory alloy material, wherein the front end of the taking-out rod (1) is separated to form a broken nail taking-out part (2), the broken nail taking-out part comprises two support legs (201) which are arranged in bilateral symmetry, and the front ends of the support legs (201) are provided with tooth hooks (202).
2. The device for extracting broken nail for femoral intramedullary nail according to claim 1, characterized in that: the memory alloy material is a nickel-titanium memory alloy material.
3. The device for extracting broken nail for femoral intramedullary nail according to claim 1, characterized in that: the tail end of the taking-out rod (1) is provided with a tail hole (3).
4. The device for extracting broken nail for femoral intramedullary nail according to claim 1, characterized in that: the taking-out rod (1) is a cylinder.
5. The device for extracting broken nail of femoral intramedullary nail according to claim 4, characterized in that: the diameter of the cylinder is 1.5-3 mm.
6. The device for extracting broken nail for femoral intramedullary nail according to claim 1, characterized in that: the supporting legs (201) are in transition connection with the taking-out rod (1) in a natural arc shape.
7. The device for extracting broken nail for femoral intramedullary nail according to claim 1, characterized in that: the opening angle between the two support legs (201) is 30-60 degrees.
8. The device for extracting broken nail for femoral intramedullary nail according to claim 1, characterized in that: the opening angle between the two support legs (201) is 45 degrees.
9. The device for extracting broken nail for femoral intramedullary nail according to claim 1, characterized in that: the thickness of the supporting leg (201) is gradually reduced from the transition part of the taking-out rod (1) to the front end.
10. The device for extracting a broken nail for a femoral intramedullary nail of claim 9, wherein: the thickness of the front end of the supporting leg (201) is 0.6-1.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415529.8U CN209916183U (en) | 2019-03-29 | 2019-03-29 | Broken nail extracting device for femoral intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415529.8U CN209916183U (en) | 2019-03-29 | 2019-03-29 | Broken nail extracting device for femoral intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209916183U true CN209916183U (en) | 2020-01-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920415529.8U Expired - Fee Related CN209916183U (en) | 2019-03-29 | 2019-03-29 | Broken nail extracting device for femoral intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209916183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112353482A (en) * | 2020-11-10 | 2021-02-12 | 无锡市第九人民医院 | Minimally invasive intramedullary broken nail extractor |
-
2019
- 2019-03-29 CN CN201920415529.8U patent/CN209916183U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112353482A (en) * | 2020-11-10 | 2021-02-12 | 无锡市第九人民医院 | Minimally invasive intramedullary broken nail extractor |
| CN112353482B (en) * | 2020-11-10 | 2022-07-05 | 无锡市第九人民医院 | Minimally invasive intramedullary broken nail extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20200110 Termination date: 20210329 |