CN215739388U - Hollow screw sighting device - Google Patents
Hollow screw sighting device Download PDFInfo
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- CN215739388U CN215739388U CN202120171809.6U CN202120171809U CN215739388U CN 215739388 U CN215739388 U CN 215739388U CN 202120171809 U CN202120171809 U CN 202120171809U CN 215739388 U CN215739388 U CN 215739388U
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- guide
- positioning
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Abstract
The utility model discloses a hollow screw sighting device which comprises a first handle and a second handle which are rotatably connected around a joint part, wherein a holding part is formed on one side, positioned on the joint part, of the first handle and the second handle, a sighting part is formed on the other side, positioned on the joint part, of the first handle and the second handle, the sighting part comprises a guide head arranged on the first handle and a positioning head arranged on the second handle, a guide hole is formed in the guide head, the guide hole is opposite to the positioning head, and a guide pipe for guiding a guide needle from one end of the guide head to one end of the positioning head penetrates through the guide hole. The utility model can fix the fracture block to the maximum extent, can determine the direction of the hollow nail, and reduces the side effect caused by multiple times of fluoroscopy.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a hollow screw sighting device.
Background
Femoral and tibial epiphyseal fractures in children are common injuries. Clinically, the epiphyseal fracture of children and teenagers is fixed by hollow screws. Because there is no aiming system similar to the fixation of a twist lock intramedullary nail, when the hollow nail is fixed at present, a kirschner wire is often used as a guide needle, and the direction and the length of the hollow nail are determined by the direction of the kirschner wire through experience and a plurality of X-ray fluoroscopy methods, so as to achieve the fixing effect. If the length and direction of the cannulated screw are not appropriate, it is easy to damage the important neurovascular bundle around the knee joint and ankle joint. Fluoroscopy increases radiation exposure and the direction of the cannulated nail cannot be ascertained.
Disclosure of Invention
The utility model aims to provide a hollow screw sighting device which can fix a fracture block to the maximum extent, can determine the direction of a hollow screw and reduce side effects caused by multiple times of perspective.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: the hollow screw sighting device comprises a first handle and a second handle which are rotatably connected around a joint part, a holding part is formed on one side of the first handle and the second handle, a sighting part is formed on the other side of the first handle and the second handle, the sighting part comprises a guide head arranged on the first handle and a positioning head arranged on the second handle, a guide hole is formed in the guide head, the guide hole is opposite to the positioning head, and a guide pipe used for guiding a guide needle from one end of the guide head to one end of the positioning head penetrates through the guide hole.
In the technical scheme, an arc-shaped positioning strip is arranged on the first handle and positioned on the inner side of the holding part, a positioning hole for the arc-shaped positioning strip to pass through is formed in the second handle, and the arc-shaped positioning strip protrudes towards one side far away from the joint part.
In the above technical scheme, the positioning head is a cylindrical positioning head, the axis of the cylindrical positioning head coincides with the axis of the guide hole, and the area of the bottom surface of the cylindrical positioning head is not smaller than the area of the guide hole.
In the technical scheme, the aperture of the guide hole is 4-5 mm, and the length of the guide hole is 9-11 mm.
In the technical scheme, the edge of the guide head, which is positioned at the guide hole, is provided with the positioning teeth.
In the technical scheme, the length of the positioning teeth is 0.9-1.1 mm.
In the technical scheme, a first rotating adjusting part is arranged on a first handle on the aiming part, the first rotating adjusting part divides the first handle into a first fixed part and a first movable part, and the guiding head is arranged on the first movable part;
and a second rotation adjusting part is arranged on a second handle on the aiming part. The second handle is divided into a second fixed part and a second movable part by the second rotation adjusting part, and the positioning head is arranged on the second movable part.
In the above technical solution, the first rotation adjusting portion includes a first fixing bolt disposed on the first fixing portion and a first fixing nut fitted and sleeved on the first fixing bolt, the first moving portion is provided with a first through hole for the first fixing bolt to pass through, and the first fixing nut and the first fixing bolt are fitted and fastened at two ends of the first through hole;
the second rotation adjusting portion comprises a second fixing bolt and a second fixing nut, the second fixing bolt is arranged on the second fixing portion, the second fixing nut is sleeved on the second fixing bolt in a matching mode, a second through hole for the second fixing bolt to penetrate through is formed in the second moving portion, and the second fixing nut and the second fixing bolt are fastened at two ends of the second through hole in a matching mode.
In the above technical scheme, a first adjusting handle is arranged on the first fixing nut, and a second adjusting handle is arranged on the second fixing nut.
In the technical scheme, the inner diameter of the guide pipe is 2mm or 2.7mm or 3.5mm, and the length of the guide pipe is 39-41 mm.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the fracture end is fixed by matching the guide head arranged on the aiming part with the positioning head, the guide head and the positioning head are opposite to each other to play a guide role, and the guide function of the guide tube penetrating through the guide head enables the guide needle to be inserted in the direction from the guide head to the positioning head, so that the fracture is sufficiently fixed, a satisfactory fixing effect is achieved, the direction of the hollow screw is determined without multiple times of perspective in the operation, and the probability of nerve and blood vessel damage caused by overlong hollow screw is reduced;
2. according to the utility model, the first rotation adjusting part and the second rotation adjusting part are arranged, so that the guide head and the positioning head can be always kept right opposite, and the guide accuracy is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a sight according to a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of a guide head according to a first embodiment of the present invention.
Fig. 3 is a side sectional view of the first rotation regulating portion according to the first embodiment of the present invention.
Wherein: 1. a joint section; 2. a first handle; 3. a second handle; 4. a grip portion; 5. an aiming section; 6. a guide head; 7. positioning the head; 8. a guide hole; 9. a conduit; 10. a finger hole; 11. an arc-shaped positioning strip; 12. positioning teeth; 13. a first rotation regulating section; 14. a first fixed part; 15. a first movable portion; 16. a second rotation regulating part; 17. a second fixed part; 18. a second movable portion; 19. a first fixing bolt; 20. a first fixing nut; 21. a first through hole; 22. a second fixing bolt; 23. a second fixing nut; 24. a first adjustment handle; 25. a second adjustment handle.
Detailed Description
The utility model is further described with reference to the following figures and examples:
the first embodiment is as follows:
referring to fig. 1 and 2, the embodiment provides a cannulated screw sighting device, which includes a first handle 2 and a second handle 3 rotatably connected around a joint portion 1, a holding portion 4 is formed on one side of the joint portion of the first handle and the second handle, a sighting portion 5 is formed on the other side of the joint portion of the first handle and the second handle, the sighting portion includes a guide head 6 arranged on the first handle and a positioning head 7 arranged on the second handle, a guide hole 8 is arranged in the guide head, the guide hole is opposite to the positioning head, and a guide tube 9 for guiding a guide needle from one end of the guide head to one end of the positioning head is arranged in the guide hole in a penetrating manner. Wherein, respectively be provided with a finger hole 10 that supplies the finger to pass on first handle and the second handle in the portion of gripping, medical personnel pass two finger holes respectively through thumb and forefinger and open and shut with the relative of conveniently operating first handle and second handle.
In this embodiment, an arc-shaped positioning strip 11 is disposed on the first handle at the inner side of the holding portion, and a positioning hole (not shown) for the arc-shaped positioning strip to pass through is disposed on the second handle, and the arc-shaped positioning strip protrudes to a side far away from the joint portion. The guide head and the positioning head can be prevented from being staggered by the matching of the arc-shaped positioning strip and the positioning hole, and the guide head is ensured to be opposite to the positioning head.
In this embodiment, the positioning head is a cylindrical positioning head, the axis of the cylindrical positioning head coincides with the axis of the guide hole, and the area of the bottom surface of the cylindrical positioning head is not smaller than the area of the guide hole.
In the embodiment, the aperture of the guide hole is 4-5 mm, and the length is 9-11 mm.
In this embodiment, the edge of the guide hole on the guide head is provided with a positioning tooth 12. Specifically, the length of the positioning teeth is 0.9-1.1 mm. The positioning teeth can be arranged to ensure firmness and reliability in the process of fixing the fracture block.
In the present embodiment, referring to fig. 3, a first rotating and adjusting part 13 is arranged on the first handle on the aiming part, the first rotating and adjusting part divides the first handle into a first fixed part 14 and a first movable part 15, and the guiding head is arranged on the first movable part;
a second rotation adjusting part 16 is arranged on the second handle of the aiming part. The second rotation adjustment part divides the second handle into a second fixed part 17 and a second movable part 18 on which the positioning head is arranged.
Specifically, the first rotation adjusting portion comprises a first fixing bolt 19 arranged on the first fixing portion and a first fixing nut 20 sleeved on the first fixing bolt in a matching manner, a first through hole 21 for the first fixing bolt to pass through is formed in the first movable portion, and the first fixing nut and the first fixing bolt are fastened at two ends of the first through hole in a matching manner;
the second rotation adjusting portion comprises a second fixing bolt 22 arranged on the second fixing portion and a second fixing nut 23 arranged on the second fixing bolt in a matched mode, a second through hole (not shown in the drawing) for the second fixing bolt to penetrate is formed in the second moving portion, and the second fixing nut and the second fixing bolt are fastened at two ends of the second through hole in a matched mode.
Specifically, one end of the first fixing bolt is integrally formed on the first fixing portion, and the other end of the first fixing bolt is tightened and fixed by the first fixing nut after passing through the first through hole; similarly, the second fixing bolt is formed on the second fixing portion as a two-body at one end, and the other end of the second fixing bolt is tightened and fixed by the second fixing nut after penetrating through the second through hole.
In order to facilitate the medical staff to tighten the first fixing nut and the second fixing nut, a first adjusting handle 24 is arranged on the first fixing nut, and a second adjusting handle 25 is arranged on the second fixing nut.
In the embodiment, the guide pipe has three optional specifications, namely a first specification with the inner diameter of 2mm, a second specification with the inner diameter of 2.7mm and a third specification with the inner diameter of 3.5mm, the length of the guide pipe is 39-41 mm, preferably 40mm, and the outer diameter of the guide pipe is only slightly smaller than the aperture of the guide hole.
When the bone fracture guiding needle is used, the holding part is spread to open the aiming part, then the holding part is slowly tightened to enable the aiming part to slowly clamp a fracture block, the guiding head is kept opposite to the positioning head by adjusting the first rotating adjusting part and the second rotating adjusting part, at the moment, the guiding tube is embedded into the guiding hole, the guiding needle penetrates to the positioning head along the guiding tube, and then the hollow screw is fixed on the guiding needle. The device can ensure that the needle is inserted according to the planned direction before the operation, fully fixes the fracture, reaches satisfactory fixed effect for it need not many times to see through in the art and confirms the direction of cannulated screw, has also reduced the probability of the neural blood vessel damage that leads to because of the cannulated screw overlength simultaneously.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A cannulated screw sight which characterized in that: the joint part is rotatably connected with the first handle through a winding, a holding part is formed on one side, located on the joint part, of the first handle and the second handle, a aiming part is formed on the other side, located on the joint part, of the first handle and the second handle, the aiming part comprises a guiding head arranged on the first handle and a positioning head arranged on the second handle, a guiding hole is formed in the guiding head, the guiding hole is right opposite to the positioning head, and a guide pipe used for guiding a guiding needle to one end of the positioning head from one end of the guiding head penetrates through the guiding hole.
2. The cannulated screw sight of claim 1, wherein: an arc-shaped positioning strip is arranged on the inner side of the holding part of the first handle, a positioning hole for the arc-shaped positioning strip to pass through is formed in the second handle, and the arc-shaped positioning strip protrudes to one side far away from the joint part.
3. The cannulated screw sight of claim 1, wherein: the positioning head is a cylindrical positioning head, the axis of the cylindrical positioning head coincides with the axis of the guide hole, and the area of the bottom surface of the cylindrical positioning head is not smaller than the area of the guide hole.
4. The cannulated screw sight of claim 1, wherein: the aperture of the guide hole is 4-5 mm, and the length is 9-11 mm.
5. The cannulated screw sight of claim 1, wherein: and the edge of the guide head, which is positioned in the guide hole, is provided with a positioning tooth.
6. The cannulated screw sight of claim 5, wherein: the length of the positioning teeth is 0.9-1.1 mm.
7. The cannulated screw sight of claim 1, wherein: a first rotating adjusting part is arranged on a first handle on the aiming part, the first rotating adjusting part divides the first handle into a first fixed part and a first movable part, and the guiding head is arranged on the first movable part;
and a second rotation adjusting part is arranged on a second handle on the aiming part. The second handle is divided into a second fixed part and a second movable part by the second rotation adjusting part, and the positioning head is arranged on the second movable part.
8. The cannulated screw sight of claim 7, wherein: the first rotating adjusting part comprises a first fixing bolt arranged on the first fixing part and a first fixing nut sleeved on the first fixing bolt in a matching manner, the first moving part is provided with a first through hole for the first fixing bolt to pass through, and the first fixing nut and the first fixing bolt are fastened at two ends of the first through hole in a matching manner;
the second rotation adjusting portion comprises a second fixing bolt and a second fixing nut, the second fixing bolt is arranged on the second fixing portion, the second fixing nut is sleeved on the second fixing bolt in a matching mode, a second through hole for the second fixing bolt to penetrate through is formed in the second moving portion, and the second fixing nut and the second fixing bolt are fastened at two ends of the second through hole in a matching mode.
9. The cannulated screw sight of claim 8, wherein: and a first adjusting handle is arranged on the first fixing nut, and a second adjusting handle is arranged on the second fixing nut.
10. The cannulated screw sight of claim 1, wherein: the inner diameter of the guide pipe is 2mm or 2.7mm or 3.5mm, and the length of the guide pipe is 39-41 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120171809.6U CN215739388U (en) | 2021-01-21 | 2021-01-21 | Hollow screw sighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120171809.6U CN215739388U (en) | 2021-01-21 | 2021-01-21 | Hollow screw sighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215739388U true CN215739388U (en) | 2022-02-08 |
Family
ID=80071405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120171809.6U Active CN215739388U (en) | 2021-01-21 | 2021-01-21 | Hollow screw sighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215739388U (en) |
-
2021
- 2021-01-21 CN CN202120171809.6U patent/CN215739388U/en active Active
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