CN220236999U - Universal wrench for intramedullary nail - Google Patents
Universal wrench for intramedullary nail Download PDFInfo
- Publication number
- CN220236999U CN220236999U CN202321336068.8U CN202321336068U CN220236999U CN 220236999 U CN220236999 U CN 220236999U CN 202321336068 U CN202321336068 U CN 202321336068U CN 220236999 U CN220236999 U CN 220236999U
- Authority
- CN
- China
- Prior art keywords
- handle
- intramedullary nail
- pin
- head
- spanner head
- 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.)
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Links
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 abstract description 4
- 208000010392 Bone Fractures Diseases 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 230000000399 orthopedic effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses an intramedullary nail universal wrench, which belongs to the technical field of installation of bone intramedullary nail screws and mainly solves the problem that the screw corner fixing technology of the intramedullary nail does not block the sight of an operator, and the wrench is rotated in the middle by a certain angle to solve the problem.
Description
Technical Field
An intramedullary nail universal wrench belongs to the technical field of intramedullary nail installation and mainly relates to a self-contained screw installation tightening technology in an intramedullary nail.
Background
In many human impressions, bone surgery is mostly very bloody and rough. The open surgery, the striking and the nailing saw … … are called up by the orthopedics doctor "carpenter", and the hammer, chisel and saw are not as few. However, medical science has evolved to the present day, many traditional open surgery operations, which have also been performed in a minimally invasive manner, have begun to "refine" and are more "humanized". Intramedullary nails, as their name implies, are nails to be driven into the "bone marrow" and belong to the orthopedic internal fixation devices among medical devices. Compared with the traditional fracture fixation mode, namely steel plate fixation, the intramedullary nail can control the axial force line of the fracture part, prevent fracture rotation deformity and reduce the risk of fracture of endophytes. Meanwhile, due to the adoption of a closing and minimally invasive technology, the surgical infection rate can be effectively reduced, bleeding in the surgery is reduced, pain of patients is relieved, and hospitalization cost and hospitalization time are reduced.
After the intramedullary nail enters the marrow, 2-6 screws are required to be installed at the head and tail ends of the intramedullary nail in a crossing way, the purpose of the screws is to fix the intramedullary nail, a stable triangular relation is formed between the intramedullary nail and the intramedullary nail, the intramedullary nail penetrates in parallel with bones, the screws and the intramedullary nail are implanted in a crossing way, the screws cannot be completely implanted by using a straight shank spanner, and the rotation movement cannot be realized by using a curved shank spanner, so that the spanner capable of universally rotating is designed.
Disclosure of Invention
According to the technical problem, the utility model discloses an intramedullary nail universal wrench, which can rotate for a certain angle, and can transmit torsion force through a rotor to realize the screwing effect of a screw.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the universal spanner for the intramedullary nail consists of a spanner head 1, a pin 2, a gasket 3, a spring 4 and a handle 5, wherein the tail end of the handle 5 is provided with a quick-change rotary handle, when the universal spanner is used, the handle 5 is rotated by the hand of the rotary handle to drive the pin 2, and the pin 2 transmits torsion force to the spanner head 1 so as to realize the nailing effect.
Preferably, the gasket 3 is a circular ring, the diameter of the outer circle is equal to that of the spring, and the diameter of the inner circle of the gasket 3 is smaller than that of the spring.
The utility model has the beneficial effects that: when the intramedullary nail enters the bone cavity, the screw needs to be fixed, and the screw and the intramedullary nail at the moment need to form a certain angle, so that the screwing wrench of the screw needs to rotate for a certain angle to realize the screwing with an angle, and the straight shank wrench cannot realize the screwing with an angle.
Drawings
FIG. 1 is a schematic view of the assembly of the present utility model.
Fig. 2 is a schematic view of the rotation angle of the present utility model.
Fig. 3 is a schematic view of the wrench head 1 according to the present utility model.
Fig. 4 is a cross-sectional view of the wrench head 1 of the present utility model.
Fig. 5 is a schematic view of a gasket 3 of the present utility model.
Detailed Description
The following technical solutions in this embodiment will be clearly described in conjunction with the accompanying drawings of the present utility model, and the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In one embodiment of the utility model, a quick-mounting handle or an electric drill is firstly arranged at the triangular edge of the handle 5, and when the handle 5 rotates, the pin 2 is welded on the handle 5, so that the pin 2 rotates along with the rotation of the handle 5, the rotation of the pin 2 drives the wrench head 1 to rotate, the head of the wrench head 1 is a hexagonal rod, and the hexagonal rod transmits torsion to the screw, thereby realizing the screwing of the screw; when the spanner head 1 is required to rotate by a certain angle, the ball head of the spanner head 1 is grooved to rotate by a certain angle corresponding to the pin 2, the ball head of the spanner head 1 is not limited to rotate after rotating, and the spanner head 1 is not rotated once rotating by a certain angle because the washer 3 clamps the spanner head and the spring 4 is propped against the spanner head, and the spanner head does not swing randomly when corresponding to the intramedullary nail screw, so that the effect of rotating at any time and aligning at any time is realized.
Claims (1)
1. The utility model provides an intramedullary nail universal wrench, by spanner head (1), pin (2), gasket (3), spring (4), handle (5) are constituteed, handle (5) terminal installation quick change rotation handle, handheld rotation handle rotates handle (5) during the use, drive pin (2), thereby spanner head (1) is given torsion power and screw effect is realized, a serial communication port, one end design of spanner head (1) is hexagonal (103), cooperate with the screw head hexagonal hole of intramedullary nail, the other end of spanner head (1) is the bulb, open an phi 2.1x4's oval hole in the middle, and mill 90 openings with the both ends of hole, upper opening (101), lower opening (102) pass the oval hole with pin (2), owing to milled 90 openings, the bulb can rotate certain angle from top to bottom, pin (2) are fixed on handle (5), spring (4), thereby the bulb of spanner head (1) is not rotated wantonly under the effect of elasticity in proper order of putting into the hole of handle (5) in spacer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336068.8U CN220236999U (en) | 2023-05-24 | 2023-05-24 | Universal wrench for intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336068.8U CN220236999U (en) | 2023-05-24 | 2023-05-24 | Universal wrench for intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220236999U true CN220236999U (en) | 2023-12-26 |
Family
ID=89227311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321336068.8U Active CN220236999U (en) | 2023-05-24 | 2023-05-24 | Universal wrench for intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220236999U (en) |
-
2023
- 2023-05-24 CN CN202321336068.8U patent/CN220236999U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |