CN215192145U - Improved hollow nail - Google Patents
Improved hollow nail Download PDFInfo
- Publication number
- CN215192145U CN215192145U CN202121221305.7U CN202121221305U CN215192145U CN 215192145 U CN215192145 U CN 215192145U CN 202121221305 U CN202121221305 U CN 202121221305U CN 215192145 U CN215192145 U CN 215192145U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- hollow nail
- threaded
- nail
- threaded sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model belongs to the technical field of medical instruments, in particular to an improved hollow nail, which comprises a hollow nail, wherein one end of the hollow nail is provided with a plug; the plug is provided with an inner hexagon, and the hollow nail and the plug are provided with through holes; the hollow nail is sleeved with a threaded sleeve, external threads are arranged on the hollow nail and the threaded sleeve, and a rotating part is arranged at one end of the threaded sleeve; the threaded sleeve comprises a sleeve hole which is arranged in a penetrating manner, and the hollow nail is arranged in the sleeve hole in a penetrating manner; the utility model discloses the effectual current hollow nail of having solved when dealing with the great femoral neck fracture of stress or the relatively poor femoral neck fracture of sclerotin, stability is relatively poor, leads to the problem that loses that resets easily.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to hollow nail of improvement.
Background
The hollow nail is an internal fixation instrument commonly used for femoral neck fracture, and comprises a full-thread nail and a half-thread nail, wherein in some femoral neck fractures with larger stress or femoral neck fractures with poorer bone quality, the shearing stress at the fracture end is larger, and the bone quality held by the tail end of the screw is poor; and because the angle stability of the traditional hollow nail is poor, the resetting is easy to lose, and the internal fixation fails.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model provides a hollow nail of improvement, the effectual current hollow nail of having solved when dealing with the great femoral neck fracture of stress or the relatively poor femoral neck fracture of sclerotin, the relatively poor problem of stability.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an improved hollow nail comprises a hollow nail, wherein a plug is arranged at one end of the hollow nail; the plug is provided with an inner hexagon, and the hollow nail and the plug are provided with through holes; the hollow nail is sleeved with a threaded sleeve, external threads are arranged on the hollow nail and the threaded sleeve, and a rotating part is arranged at one end of the threaded sleeve; the threaded sleeve comprises a sleeve hole penetrating through the threaded sleeve, and the hollow nail is arranged in the sleeve hole in a penetrating mode.
Further, be equipped with in the threaded sleeve with end cap matched with holding tank, the one end that the trepanning is close to the rotating part is located to the holding tank.
Furthermore, the threaded sleeve further comprises an adjusting sleeve, and the adjusting sleeve comprises an upper sleeve, a middle sleeve and a lower sleeve which are connected with each other; the upper sleeve, the middle sleeve and the lower sleeve are provided with external threads, and the upper sleeve, the middle sleeve and the lower sleeve are provided with adjusting sleeve holes.
Furthermore, the upper sleeve and the middle sleeve are both connected with connecting thread columns, and the middle sleeve and the lower sleeve are provided with connecting thread cylinders matched with the connecting thread columns.
Furthermore, the upper sleeve, the middle sleeve and the lower sleeve are respectively provided with an adjusting inner hexagon at one end far away from the connecting threaded column.
Further, be equipped with the regulation holding tank in the upper sleeve, adjust the holding tank and locate the one end that adjusts the trepanning and be close to interior hexagonal of regulation.
Compared with the prior art, the beneficial effects of the utility model are that:
1. when the utility model is used, the tail part of the hollow nail is positioned in the sleeve through the arrangement of the threaded sleeve, thereby effectively improving the directionality of the hollow nail; in addition, the threaded sleeve and the bone are mutually held through the threads, so that the contact area of the sleeve and the bone is greatly increased, the local stress is dispersed, and the stability of the hollow nail is improved.
2. Through the setting of upper sleeve, well sleeve, lower sleeve, make the utility model discloses when using, can select the threaded sleeve of equipment different length as required, improve the stability of hollow nail.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a threaded sleeve according to embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a hollow nail according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of an adjusting sleeve in embodiment 2 of the present invention;
fig. 5 is a schematic view of the fitting state of the upper sleeve, the middle sleeve, and the lower sleeve in embodiment 2 of the present invention;
in the figure: 1. hollow nail, 2, threaded sleeve, 3, rotating part, 4, holding tank, 5, trepanning, 6, end cap, 7, interior hexagonal, 8, perforation, 9, lower sleeve, 10, connecting thread post, 11, well sleeve, 12, go up the sleeve, 13, adjust interior hexagonal, 14, adjust the holding tank, 15, adjust the trepanning, 16, connecting thread section of thick bamboo.
Detailed Description
Example 1
An improved hollow nail is shown in figures 1-3 and comprises a hollow nail 1, wherein a plug 6 is arranged at one end of the hollow nail 1; the plug 6 is provided with an inner hexagon 7, and the hollow nail 1 and the plug 6 are provided with through holes 8; the hollow nail 1 is sleeved with a threaded sleeve 2, external threads are arranged on the hollow nail 1 and the threaded sleeve 2, a rotating part 3 is arranged at one end of the threaded sleeve 2, and the rotating part 3 is preferably an inner hexagon; the threaded sleeve 2 comprises a sleeve hole 5 which penetrates through the threaded sleeve, and the hollow nail 1 penetrates through the sleeve hole 5. The tail of the hollow nail 1 is positioned in the sleeve through the arrangement of the threaded sleeve 2, so that the directionality of the hollow nail 1 can be effectively improved; in addition, the threaded sleeve 2 and the bone are mutually held through threads, so that the contact area of the sleeve and the bone is greatly increased, the local stress is dispersed, and the stability of the hollow nail 1 is improved.
Further, be equipped with in the threaded sleeve 2 with end cap 6 matched with holding tank 4, holding tank 4 locates trepanning 5 one end that is close to rotating part 3, and holding tank 4 plays to hold spacing effect to end cap 6, can the effectual stability that improves hollow nail 1.
Further, the end, far away from interior hexagonal 7, of threaded sleeve 2 is equipped with circular terminal surface, and the helicoid of threaded sleeve 2 passes through excircle chamfer rounding off with circular terminal surface.
The utility model discloses a working process does:
1. closing and reducing the femoral neck fracture, driving a guide pin with the diameter of 2.5mm into the femoral neck fracture, and measuring the length of the required hollow nail 1;
2. drilling and enlarging a hole of a hollow nail 1 and a hole of a threaded sleeve 2 along the guide pin by using a hollow drill;
3. follow guide pin spiral shell core nail 1, after threaded sleeve 2 and cortex contact, through rotating part 3 spiral shell core nail 1 screw up through interior hexagonal 7 again, end cap 6 is in holding tank 4 this moment through spiral shell threaded sleeve 2.
Example 2
An improved hollow nail has the same structure as that of the embodiment 1, except that: as shown in fig. 4 and 5, the threaded sleeve 2 further comprises an adjusting sleeve, which comprises an upper sleeve 12, a middle sleeve 11 and a lower sleeve 9 which are connected with each other; the upper sleeve 12, the middle sleeve 11 and the lower sleeve 9 are all provided with external threads, and the upper sleeve 12, the middle sleeve 11 and the lower sleeve 9 are all provided with adjusting sleeve holes 15. Through the setting of upper sleeve 12, well sleeve 11, lower sleeve 9, make the utility model discloses when using, can select the threaded sleeve 2 of equipment different length as required, improve the stability of hollow nail 1.
Furthermore, the upper sleeve 12 and the middle sleeve 11 are both connected with a connecting threaded column 10, and the middle sleeve 11 and the lower sleeve 9 are provided with connecting threaded columns 16 matched with the connecting threaded column 10; the upper sleeve 12, the middle sleeve 11 and the lower sleeve 9 are connected through a connecting threaded column 10 and a connecting threaded barrel 16.
Furthermore, one ends of the upper sleeve 12, the middle sleeve 11 and the lower sleeve 9, which are far away from the connecting threaded column 10, are provided with adjusting inner hexagons 13; through setting up hexagonal 13 in adjusting, make upper sleeve 12, well sleeve 11, lower sleeve 9 when using, can effectually prevent that the condition that upper sleeve 12 can't be unscrewed well sleeve 11 and lower sleeve 9 from appearing, improve the utility model discloses a stability.
Furthermore, an adjusting accommodating groove 14 is formed in the upper sleeve 12, and the adjusting accommodating groove 14 is formed in one end, close to the adjusting inner hexagon 13, of the adjusting sleeve hole 15; play to hold spacing effect through adjusting holding tank 14 to end cap 6, stability that can effectual improvement hollow nail 1.
Claims (6)
1. An improved hollow nail comprises a hollow nail (1), wherein a plug (6) is arranged at one end of the hollow nail (1); the plug (6) is provided with an inner hexagon (7), and the hollow nail (1) and the plug (6) are provided with through holes (8); the method is characterized in that: the hollow nail (1) is sleeved with a threaded sleeve (2), external threads are arranged on the hollow nail (1) and the threaded sleeve (2), and a rotating part (3) is arranged at one end of the threaded sleeve (2); the threaded sleeve (2) comprises a sleeve hole (5) which penetrates through the threaded sleeve, and the hollow nail (1) penetrates through the sleeve hole (5).
2. The improved hollow nail of claim 1, wherein: be equipped with in threaded sleeve (2) with end cap (6) matched with holding tank (4), holding tank (4) are located trepanning (5) and are close to the one end of rotating part (3).
3. The improved hollow nail of claim 1, wherein: the threaded sleeve (2) further comprises an adjusting sleeve, and the adjusting sleeve comprises an upper sleeve (12), a middle sleeve (11) and a lower sleeve (9) which are connected with each other; the upper sleeve (12), the middle sleeve (11) and the lower sleeve (9) are all provided with external threads, and the upper sleeve (12), the middle sleeve (11) and the lower sleeve (9) are all provided with adjusting sleeve holes (15).
4. The improved hollow nail of claim 3, wherein: the upper sleeve (12) and the middle sleeve (11) are both connected with a connecting thread column (10), and the middle sleeve (11) and the lower sleeve (9) are provided with connecting thread cylinders (16) matched with the connecting thread column (10).
5. The improved hollow nail of claim 4, wherein: and one ends of the upper sleeve (12), the middle sleeve (11) and the lower sleeve (9) far away from the connecting threaded column (10) are respectively provided with an adjusting inner hexagon (13).
6. The improved hollow nail of claim 5, wherein: be equipped with in upper sleeve (12) and adjust holding tank (14), adjust holding tank (14) and locate and adjust trepanning (15) and be close to the one end of adjusting interior hexagonal (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121221305.7U CN215192145U (en) | 2021-06-02 | 2021-06-02 | Improved hollow nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121221305.7U CN215192145U (en) | 2021-06-02 | 2021-06-02 | Improved hollow nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215192145U true CN215192145U (en) | 2021-12-17 |
Family
ID=79423066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121221305.7U Expired - Fee Related CN215192145U (en) | 2021-06-02 | 2021-06-02 | Improved hollow nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215192145U (en) |
-
2021
- 2021-06-02 CN CN202121221305.7U patent/CN215192145U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204394613U (en) | A kind of surgical drill depth stop device | |
| CN215192145U (en) | Improved hollow nail | |
| CN205198118U (en) | Universal screw of expandable type pedicle of vertebral arch cortex bone | |
| WO2023109432A1 (en) | Skull pin and brain electrode fixation assembly | |
| CN210019595U (en) | Intramedullary nail for femur | |
| CN206792478U (en) | Bone cement screw | |
| CN202313677U (en) | Novel three-claw fixing device | |
| CN205988306U (en) | A kind of driven opening cranium drill bit | |
| CN204410948U (en) | For the fixing tail cap of closed intramedullary pin centre bore tail end | |
| CN203328792U (en) | Novel medical bone screw | |
| CN204337030U (en) | A kind of Combined bone screw | |
| CN202207199U (en) | A nail guide equipment | |
| CN108703796A (en) | Explosion-proof compressive hollow screw without a head | |
| CN216317934U (en) | Minimally invasive percutaneous implantation guider for bone fracture plate screw | |
| CN205163229U (en) | Developments locking screw and dynamic locking bone plate system | |
| CN210843415U (en) | Easy-to-take-out intramedullary screwing-in nail device for orthopedics department | |
| CN219763512U (en) | Metal bone needle convenient to position | |
| CN201847753U (en) | Self-drilling traction screw | |
| CN209004163U (en) | A kind of double set Kirschner wires of children | |
| CN217310529U (en) | Anti-rotation anti-withdrawal hollow screw | |
| CN213129600U (en) | Bone puncture needle | |
| CN215306595U (en) | Bone plate nail system capable of being implanted at variable angles | |
| CN220967386U (en) | Lower tibiofibular hollow screw with guide pin | |
| CN210990669U (en) | Variable angle hollow headless compression screw | |
| CN208573815U (en) | It is a kind of can precise positioning and be used for cortex bone channel bone cement screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |