CN214434447U - A screw thread needle for steel sheet is fixed temporarily - Google Patents
A screw thread needle for steel sheet is fixed temporarily Download PDFInfo
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- CN214434447U CN214434447U CN202023249080.4U CN202023249080U CN214434447U CN 214434447 U CN214434447 U CN 214434447U CN 202023249080 U CN202023249080 U CN 202023249080U CN 214434447 U CN214434447 U CN 214434447U
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Abstract
The utility model discloses a screw thread needle for steel sheet is fixed temporarily, including needle bar and needle cap, the needle bar front end is equipped with the drill bit, the needle bar end is equipped with the centre gripping handle, the cross sectional shape of needle bar is circular, the needle bar is by supreme first body of rod and the second body of rod that divide into integrated into one piece down, be equipped with the external screw thread on the first body of rod, the second body of rod is the polished rod, be equipped with the run-through connecting hole in the needle cap, be equipped with in the connecting hole with the first body of rod on establish external screw thread assorted internal thread, the needle cap sets up on the first body of rod and fixes its position on the first body of rod through the internal thread in the connecting hole and the external screw thread fit on the first body of rod. This screw thread can carry out interim fixed to the steel sheet at the initial stage that the steel sheet was put into, simultaneously, can choose the relative position that the nail cap was adjusted to the intraosseous nailing degree of depth on first body of rod of steel sheet thickness, clinical judgement for use according to the operation reality, has not only guaranteed the validity that the steel sheet is fixed, the security of nailing in the bone, has still greatly improved the application scope of this screw thread.
Description
Technical Field
The utility model relates to a fracture surgical instruments technical field that resets especially relates to a whorl needle that is used for steel sheet temporary fixation.
Background
Clinically, in a fracture operation for fixing by adopting a steel plate, the steel plate needs to be pressurized after being placed so as to reduce a gap between the steel plate and a bone surface and ensure that the steel plate is attached to the bone surface, thereby reducing the soft tissue volume occupied by the steel plate. The conventional surgical procedure is as follows: after the reduction is finished, the steel plate is placed in, holes are drilled above and below the fracture position respectively, the compression screws are screwed in, and the steel plate is compressed by screwing down the compression screws. However, in the early stage after the steel plate is inserted, the steel plate is not fixed, that is, the steel plate is still in an unstable state, and particularly in the case of dissecting a complicated or hard-to-expose part, the drilling process needs to be very careful, and the operation is difficult, complicated to operate and long in operation time. Therefore, the conventional press screw is not suitable for use in an initial stage after the steel plate is set.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art current situation, provide a screw thread needle for steel sheet is fixed temporarily, this screw thread needle can carry out the temporary fixation to the steel sheet at the initial stage that the steel sheet was put into, simultaneously, can choose the relative position on the first body of rod of needle cap is adjusted to the intraosseous nailing degree of depth of steel sheet thickness, clinical judgement for use according to the operation is actual.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a screw thread needle for steel sheet is fixed temporarily, includes needle bar and needle cap, the needle bar front end is equipped with the drill bit, and the needle bar end is equipped with the centre gripping handle, and the cross sectional shape of needle bar is circular, and the needle bar is by supreme first body of rod and the second body of rod that divide into integrated into one piece down, is equipped with the external screw thread on the first body of rod, and the second body of rod is the polished rod, and the external screw thread formation on drill bit and the first body of rod is from tapping structure, be equipped with the run-through connecting hole in the needle cap, be equipped with in the connecting hole with the first body of rod on external screw thread assorted internal thread, the needle cap sets up on the first body of rod and fixes its position on the first body of rod through the internal thread cooperation on the internal thread in the connecting hole and the first body of rod, the first body of rod and needle cap form the limit structure of fixed steel sheet.
Furthermore, the needle holder further comprises a sleeve, the sleeve is nested on the needle rod and located between the clamping handle and the needle cap, scale marks are arranged on the second rod body, and the accurate position of the needle cap on the first rod body is indirectly obtained by reading the scale marks on the second rod body at the upper end of the sleeve.
Furthermore, the needle cap is divided into a first cap body and a second cap body which are integrally formed from bottom to top, the first cap body is in a circular truncated cone shape, the second cap body is in a spherical shape, the connecting hole penetrates through the first cap body and the second cap body, and the central axis of the connecting hole is coincided with the central axis of the first cap body and one diameter of the second cap body.
Furthermore, the side wall of the second cap body is provided with anti-skid grains along the circumferential direction.
Furthermore, the cross section of the clamping handle is polygonal, and anti-skid grains are arranged on the side wall of the clamping handle. The utility model has the advantages that:
1. compared with the prior art, the threaded needle for temporarily fixing the steel plate can temporarily fix the steel plate at the initial stage of placing the steel plate, and meanwhile, the relative position of the needle cap on the first rod body can be adjusted according to the thickness of the steel plate actually selected for operation and the clinically-determined nailing depth in bones, so that the effectiveness of fixing the steel plate and the safety of nailing in bones are ensured, and the application range of the threaded needle is greatly improved;
2. add the sleeve on the needle bar to make the sleeve be in between centre gripping handle and the needle cap, when the relative position of adjustment needle cap on the first body of rod, the sleeve will remove thereupon, through reading the scale of sleeve upper end on the second body of rod, indirectly obtains the accurate position of needle cap on the first body of rod, does benefit to and carries out accurate regulation to the needle cap.
Drawings
FIG. 1 is a schematic structural view of the threaded needle of the present invention;
FIG. 2 is a schematic structural view of the needle bar of the present invention;
fig. 3 is a schematic structural view of the needle cap of the present invention.
Description of the labeling: 1. the needle rod comprises a needle rod body 1-1, a first rod body 1-2, a second rod body 2, a drill bit 3, a clamping handle 4, a needle cap 4-1, a second cap body 4-2, a first cap body 4-3, a connecting hole 5 and a sleeve.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1-3, a threaded needle for temporarily fixing a steel plate comprises a needle rod 1 and a needle cap 4, wherein a drill bit 2 is arranged at the front end of the needle rod 1, and a clamping handle 3 is arranged at the tail end of the needle rod 1. The cross-sectional shape of the clamping handle 3 is polygonal, including but not limited to triangle, quadrangle, and pentagon, and the clamping handle 3 is shown as quadrangle. Preferably, the side wall of the clamping handle 3 is provided with anti-slip lines, so that the needle rod 1 is prevented from falling off when being clamped on an electric drill.
The section of the needle rod 1 is circular, the needle rod 1 is divided into a first rod body 1-1 and a second rod body 1-2 which are integrally formed from bottom to top, the first rod body 1-1 is provided with external threads, the second rod body 1-2 is a polished rod, and the drill bit 2 and the external threads on the first rod body 1-1 form a self-tapping structure. When the electric drill drives the needle rod 1 to drill into the bone, the drill bit 2 drills the hole in the bone, and the first rod body 1-1 taps the hole in the bone.
A through connecting hole 4-3 is arranged in the needle cap 4, an internal thread matched with an external thread arranged on the first rod body 1-1 is arranged in the connecting hole 4-3, the needle cap 4 is arranged on the first rod body 1-1 and is matched with the external thread on the first rod body 1-1 through the internal thread in the connecting hole 4-3 to fix the position of the needle cap on the first rod body 1-1, and the first rod body 1-1 and the needle cap 4 form a limiting structure for fixing a steel plate. The needle cap 4 is in threaded connection with the first rod body 1-1, so that a doctor can adjust the relative position of the needle cap 4 on the first rod body 1-1 according to the actual thickness of the steel plate and the clinically judged intraosseous nailing depth. As the first rod 1-1 is threaded down in the bone, the needle cap 4 will come into contact with the steel plate and gradually compress it.
As one implementation mode, the needle cap 4 is divided into a first cap body 4-2 and a second cap body 4-1 which are integrally formed from bottom to top, the first cap body 4-2 is in a circular truncated cone shape, the second cap body 4-1 is in a spherical shape, the connecting hole 4-3 penetrates through the first cap body 4-2 and the second cap body 4-1, and the central axis of the connecting hole 4-3 is coincident with the central axis of the first cap body 4-2 and one diameter of the second cap body 4-1. The first cap body 4-2 in the shape of a circular truncated cone is matched with a screw hole in the steel plate to limit the steel plate transversely, and the second cap body 4-1 in the shape of a spherical cap is matched with the steel plate to limit the steel plate longitudinally.
Preferably, the side wall of the second cap body 4-1 is provided with anti-slip threads along the circumferential direction, which is beneficial to manually adjusting the position of the needle cap 4 on the first rod body 1-1.
According to the technical scheme, the needle rod device further comprises a sleeve 5, the sleeve 5 is nested on the needle rod 1, the sleeve 5 is located between the clamping handle 3 and the needle cap 4, the second rod body 1-2 is provided with scale marks 1-3, and the accurate position of the needle cap 4 on the first rod body 1-1 is indirectly obtained by reading the scale marks on the second rod body 1-2 at the upper end of the sleeve 5.
Specifically, after the steel plate is placed, the fixing process of the steel plate by adopting the threaded needle and the conventional compression screw is as follows:
according to the thickness of the steel plate actually selected for operation and the relative position of the intraosseous nailing depth adjusting needle cap 4 on the first rod body 1-1 clinically judged by a doctor, the adjustment amount is read through the sleeve 5;
after the needle cap 4 is adjusted, the clamping handle 3 at the tail end of the needle rod 1 is connected with an electric drill, so that the needle rod 1 is clamped on the electric drill;
respectively drilling threaded needles into screw holes above and below the fracture position on the steel plate until the needle cap 4 is in contact with the steel plate and compresses the steel plate, and temporarily fixing the steel plate;
drilling holes in other screw holes above and below the fracture position on the steel plate respectively and screwing conventional compression screws in the holes to ensure that the steel plate is completely in a stable state, wherein the number of the compression screws is determined according to the size of the steel plate;
and reversely rotating the inserted threaded needle by the electric drill and taking out the threaded needle to finish the fixation operation.
Compared with the prior art, the steel plate can be temporarily fixed by the threaded needle for temporarily fixing the steel plate at the initial stage of placing the steel plate, and meanwhile, the relative position of the needle cap 4 on the first rod body 1-1 can be adjusted by the nailing depth in the bone according to the thickness of the steel plate and clinical judgment of the steel plate actually selected for use in an operation, so that the effectiveness of fixing the steel plate and the safety of nailing in the bone are guaranteed, and the application range of the threaded needle is greatly widened.
Of course, the above is only the preferred embodiment of the present invention, and the application range of the present invention is not limited thereto, so all the equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A threaded needle for temporarily fixing a steel plate is characterized in that: including needle bar and needle cap, the needle bar front end is equipped with the drill bit, and the needle bar end is equipped with the centre gripping handle, and the cross sectional shape of needle bar is circular, and the needle bar is by supreme first body of rod and the second body of rod that divide into integrated into one piece down, is equipped with the external screw thread on the first body of rod, and the second body of rod is the polished rod, and the external screw thread formation on drill bit and the first body of rod is from the tapping structure, be equipped with the run-through connecting hole in the needle cap, be equipped with in the connecting hole with the first body of rod on establish external screw thread assorted internal thread, the needle cap setting is fixed its position on the first body of rod through the internal thread in the connecting hole and the external screw thread cooperation on the first body of rod, the first body of rod forms the limit structure of fixed steel sheet with the needle cap.
2. The threading pin for temporarily fixing a steel plate according to claim 1, wherein: the needle bar is embedded on the needle bar, the sleeve is located between the clamping handle and the needle cap, scale marks are arranged on the second bar body, and the accurate position of the needle cap on the first bar body is indirectly obtained by reading the scale marks on the second bar body at the upper end of the sleeve.
3. The threading pin for temporarily fixing a steel plate according to claim 1, wherein: the needle cap is divided into a first cap body and a second cap body which are integrally formed from bottom to top, the first cap body is in a circular truncated cone shape, the second cap body is in a spherical shape, the connecting hole penetrates through the first cap body and the second cap body, and the central axis of the connecting hole is coincided with the central axis of the first cap body and one diameter of the second cap body.
4. The threading pin for temporarily fixing a steel plate according to claim 3, wherein: and anti-skid grains are arranged on the side wall of the second cap body along the circumferential direction of the side wall.
5. The threading pin for temporarily fixing a steel plate according to claim 1, wherein: the cross-sectional shape of centre gripping handle is the polygon, is equipped with anti-skidding line on the lateral wall of centre gripping handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023249080.4U CN214434447U (en) | 2020-12-29 | 2020-12-29 | A screw thread needle for steel sheet is fixed temporarily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023249080.4U CN214434447U (en) | 2020-12-29 | 2020-12-29 | A screw thread needle for steel sheet is fixed temporarily |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214434447U true CN214434447U (en) | 2021-10-22 |
Family
ID=78108614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023249080.4U Active CN214434447U (en) | 2020-12-29 | 2020-12-29 | A screw thread needle for steel sheet is fixed temporarily |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214434447U (en) |
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2020
- 2020-12-29 CN CN202023249080.4U patent/CN214434447U/en active Active
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