CN217219172U - Internal thread forcing screw device - Google Patents
Internal thread forcing screw device Download PDFInfo
- Publication number
- CN217219172U CN217219172U CN202122713651.3U CN202122713651U CN217219172U CN 217219172 U CN217219172 U CN 217219172U CN 202122713651 U CN202122713651 U CN 202122713651U CN 217219172 U CN217219172 U CN 217219172U
- Authority
- CN
- China
- Prior art keywords
- internal thread
- screw
- compression screw
- processed
- thread
- 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.)
- Active
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses an internal thread pressure screw device, which comprises an internal thread pressure screw and a kirschner wire; one end of the internal thread compression screw is processed into a screw cap structure which can be connected with an electric drill, one side of the internal thread compression screw, which is close to the screw cap, is of a solid structure, one side of the internal thread compression screw, which is far away from the screw cap, is of a hollow structure, the hollow structure forms a cylinder shape, and an internal thread is processed on the inner surface of the hollow structure; a first external thread is processed on the outer surface of the internal thread compression screw; the whole Kirschner wire is of a solid structure, one side of the Kirschner wire is cylindrical, a second external thread matched with the internal thread is processed on the outer surface of the cylinder, and the other side of the Kirschner wire is processed into a needle point structure; the thread directions of the first external thread and the second external thread are consistent. Aiming at the fixing device for the avulsion fracture small bone block, the accurate and stable reduction of the fracture block in a limited space can be effectively realized, and the clinical value is realized.
Description
Technical Field
The utility model belongs to medical auxiliary equipment, concretely relates to internal thread forcing screw device.
Background
With the popularization of comprehensive body building, the incidence of fracture is higher and higher, wherein avulsion fracture is common violent injury in the field of sports medicine, is often seen in car accident injury or high-level sports injury of athletes, and is most common in avulsion fracture at ligament insertion points, such as avulsion fracture of cruciate ligaments of knee joints and the like. Most of the traditional treatment methods are mainly an incision reduction internal fixation mode, but the open surgery easily causes damage to local blood supply and nerves, and the surgery wound is large. In addition, as for the internal fixation method, lag screws and the like are mostly adopted for fixation, the fixation strength is limited, and especially, the avulsion fracture at the ligament insertion point has higher requirements on the fixation strength. With the development and maturity of minimally invasive techniques in sports medicine, minimally invasive treatment of avulsion fracture is more and more advocated and welcomed, but how to achieve accurate and stable reduction of fracture blocks in a limited space is an important subject faced by clinicians.
SUMMERY OF THE UTILITY MODEL
The problem to prior art exists, the utility model provides an internal thread forcing screw device is to tearing off the fixing device of fracture ossicle piece, can effectively accomplish in limited space with the exact, stable restoration of fracture piece, has clinical value.
The technical scheme of the utility model is that: an internal thread compression screw device comprises an internal thread compression screw and a Kirschner wire;
one end of the internal thread compression screw is processed into a screw cap structure which can be connected with an electric drill, one side of the internal thread compression screw, which is close to the screw cap, is of a solid structure, one side of the internal thread compression screw, which is far away from the screw cap, is of a hollow structure, the hollow structure forms a cylinder shape, and an internal thread is processed on the inner surface of the hollow structure;
a first external thread is processed on the outer surface of the internal thread compression screw;
the whole Kirschner wire is of a solid structure, one side of the Kirschner wire is cylindrical, a second external thread matched with the internal thread is processed on the outer surface of the cylinder, and the other side of the Kirschner wire is processed into a needle point structure;
the thread directions of the first external thread and the second external thread are consistent.
Further, the pitch of the first external thread is greater than the pitch of the second external thread.
Furthermore, the outer surface of the internal thread compression screw corresponding to the hollow structure of the internal thread compression screw is of a cylindrical structure.
Furthermore, the outer surface of the internal thread compression screw corresponding to the solid structure of the internal thread compression screw is in a circular truncated cone structure, and the diameter of one end close to the screw cap is the largest.
Furthermore, the included angle between the side surface of the circular truncated cone structure and the central axis is 5-10 degrees.
Furthermore, the screw cap structure is a screw cap processed with an inner hexagonal.
The utility model has the advantages that: when using, will tear off the fracture piece and reset under the visual condition of wicresoft, pierce through the bone piece and wear out contralateral cortex of bone with the ke shi needle, be connected ke shi needle and internal thread forcing screw through internal thread and second external screw, fixed ke shi needle point end is connected to the electric drill, further tractive ke shi needle, treat that internal thread forcing screw gets into bone tissue completely and will tear off the stable back of fracture piece, reverse rotation ke shi needle for the internal thread separates the back with second external screw, withdraw from the ke shi needle.
The invention is operated on the basis of a minimally invasive concept, has the characteristics of small wound and quick recovery, is operated under a visible condition, has simple operation steps and is easy to master and operate.
According to the invention, the kirschner wires and the internal thread compression screws with different diameters can be selected according to the size of the fracture block, so that the injury to bones and soft tissues is small, and the risk of further fracture of free bone blocks is greatly reduced.
Drawings
FIG. 1 is a schematic view of the overall construction of an internally threaded compression screw;
FIG. 2 is a schematic structural view of a kirschner wire with a thread at the tail end;
FIG. 3 is a cross-sectional view of an internally threaded compression screw;
FIG. 4 is a top view of the tail end of the internally threaded compression screw;
fig. 5 is a schematic view of the kirschner wire after being connected with the internal thread compression screw.
In the figure: 1 is an internal thread pressure screw, 2 is a kirschner wire, 11 is a first external thread, 12 is an internal thread, and 21 is a second external thread.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
An internally threaded compression screw apparatus, as shown in fig. 5, comprises an internally threaded compression screw 1, as shown in fig. 1 and 3, and a k-wire 2, as shown in fig. 2.
Internal thread forcing screw 1 one end processing is as shown in fig. 4 for the screw cap structure that has the allen can be connected with the electric drill, and internal thread forcing screw 1 is close to screw cap one side and is solid core structure, keeps away from screw cap one side and is the hollow structure, the hollow structure constitutes cylindrically, and hollow structure internal surface processing has internal thread 12.
The external surface of the internal thread pressure screw 1 is provided with a first external thread 11.
The whole Kirschner wire 2 is of a solid structure, one side of the Kirschner wire 2 is cylindrical, a second external thread 21 matched with the internal thread 12 is processed on the outer surface of the cylinder, and the other side of the Kirschner wire 2 is processed into a needle point structure.
The thread directions of the first external thread 11 and the second external thread 21 are consistent. And the pitch of the first external thread 11 is greater than the pitch of the second external thread 21.
The outer surface of the internal thread compression screw corresponding to the hollow structure of the internal thread compression screw 1 is of a cylindrical structure. The outer surface of the internal thread compression screw corresponding to the solid structure of the internal thread compression screw 1 is in a circular truncated cone structure, and the diameter of one end, close to the screw cap, of the internal thread compression screw is the largest. Specifically, the included angle between the side face of the circular truncated cone structure and the central axis is 5-10 degrees.
When using, will tear off the fracture piece and reset under the visual condition of wicresoft, pierce through the bone piece and wear out contralateral cortex of bone with the ke shi needle, be connected ke shi needle and internal thread forcing screw through internal thread and second external screw, fixed ke shi needle point end is connected to the electric drill, further tractive ke shi needle, treat that internal thread forcing screw gets into bone tissue completely and will tear off the stable back of fracture piece, reverse rotation ke shi needle for the internal thread separates the back with second external screw, withdraw from the ke shi needle.
The operation is carried out on the basis of the minimally invasive concept, the minimally invasive surgery instrument has the characteristics of small wound and quick recovery, and is operated under a visible condition, simple in operation steps and easy to master and operate. The kirschner wire and the internal thread compression screw with different diameters can be selected according to the size of the fracture block, so that the injury to bones and soft tissues is small, and the risk of further fragmentation of free bone blocks is greatly reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. An internal thread compression screw device which characterized in that: comprises an internal thread compression screw (1) and a kirschner wire (2);
one end of the internal thread compression screw (1) is processed into a screw cap structure which can be connected with an electric drill, one side, close to the screw cap, of the internal thread compression screw (1) is of a solid structure, one side, far away from the screw cap, of the internal thread compression screw is of a hollow structure, the hollow structure is cylindrical, and an internal thread (12) is processed on the inner surface of the hollow structure;
a first external thread (11) is processed on the outer surface of the internal thread compression screw (1);
the whole Kirschner wire (2) is of a solid core structure, one side of the Kirschner wire (2) is cylindrical, a second external thread (21) matched with the internal thread (12) is processed on the outer surface of the cylinder, and the other side of the Kirschner wire (2) is processed into a needle point structure;
the thread directions of the first external thread (11) and the second external thread (21) are consistent.
2. An internally threaded compression screw apparatus as claimed in claim 1, wherein: the pitch of the first external thread (11) is greater than the pitch of the second external thread (21).
3. An internally threaded compression screw apparatus as claimed in claim 1 wherein: the outer surface of the internal thread compression screw corresponding to the hollow structure of the internal thread compression screw (1) is of a cylindrical structure.
4. An internally threaded compression screw apparatus as claimed in claim 1, wherein: the outer surface of the internal thread compression screw corresponding to the solid structure of the internal thread compression screw (1) is of a circular truncated cone structure, and the diameter of one end close to the screw cap is the largest.
5. An internally threaded compression screw apparatus as claimed in claim 4, wherein: the included angle between the side surface of the circular truncated cone structure and the central axis is 5-10 degrees.
6. An internally threaded compression screw apparatus as claimed in claim 1, wherein: the screw cap structure is a screw cap processed with an inner hexagonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122713651.3U CN217219172U (en) | 2021-11-08 | 2021-11-08 | Internal thread forcing screw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122713651.3U CN217219172U (en) | 2021-11-08 | 2021-11-08 | Internal thread forcing screw device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217219172U true CN217219172U (en) | 2022-08-19 |
Family
ID=82818131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122713651.3U Active CN217219172U (en) | 2021-11-08 | 2021-11-08 | Internal thread forcing screw device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217219172U (en) |
-
2021
- 2021-11-08 CN CN202122713651.3U patent/CN217219172U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104546100B (en) | Dynamic compression locking plate for treatment of femoral neck fracture | |
| CN209186913U (en) | A kind of fracture Minimally Invasive Surgery bone-knitting device | |
| CN104825217A (en) | Double-nail-hook metaphysis pressurizing fixing device | |
| CN102525632A (en) | Locking steel plate and collimation assembly component thereof | |
| CN101138514A (en) | Neck of femur pressurizing locking fixer | |
| CN203493718U (en) | Intramedullary main nail for olecranal fracture and fixing system composed of intramedullary main nail | |
| CN217219172U (en) | Internal thread forcing screw device | |
| CN204909608U (en) | Kneecap locking pressurizing internal fixation device | |
| CN204931828U (en) | A kind of way of escape spinal fixation system | |
| CN203138650U (en) | Improved bone marrow core decompression surgical instrument for femoral head necrosis | |
| CN205411287U (en) | Self tapping type marrow internal fixation device suitable for long bone fracture | |
| CN212140560U (en) | Memory alloy rear cross ligament fixer | |
| KR200383131Y1 (en) | headless cone screw thread on outside of head | |
| CN201642284U (en) | Combined clavicle intramedullary nail | |
| CN201831944U (en) | Hollow screw locking plate | |
| CN105125266A (en) | Self-tapping intramedullary fixation device suitable for long bone fractures | |
| CN101703419A (en) | Hollow guiding inward contraction pressurizing bone bolt | |
| CN201248762Y (en) | Intramedullary nail device of threads of clavicular tail | |
| CN103750897A (en) | Orthopaedic broken screw removing device and using method thereof | |
| CN214966516U (en) | Percutaneous fracture reduction forceps between femoral tuberosity | |
| CN216854825U (en) | Patella fracture nail cable locking device | |
| CN204971529U (en) | Two nails hook metaphysis pressurization fixer | |
| CN203183016U (en) | Inner fixing system of convex sacrum plate | |
| CN204839706U (en) | Dual fixer of stabilizing inside and outside fracture portion marrow | |
| CN220275691U (en) | Bone screw facilitating cable penetration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |