CN217566208U - Novel threaded metal spicule - Google Patents
Novel threaded metal spicule Download PDFInfo
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- CN217566208U CN217566208U CN202221273242.4U CN202221273242U CN217566208U CN 217566208 U CN217566208 U CN 217566208U CN 202221273242 U CN202221273242 U CN 202221273242U CN 217566208 U CN217566208 U CN 217566208U
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- Prior art keywords
- thread
- double
- bone
- needle body
- spicule
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- 239000002184 metal Substances 0.000 title claims abstract description 31
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 40
- 230000001054 cortical effect Effects 0.000 claims description 7
- 238000002513 implantation Methods 0.000 abstract description 7
- 230000000399 orthopedic effect Effects 0.000 abstract description 3
- 230000012010 growth Effects 0.000 abstract description 2
- 208000010392 Bone Fractures Diseases 0.000 description 8
- 238000005553 drilling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001356 surgical procedure Methods 0.000 description 5
- 239000007943 implant Substances 0.000 description 4
- 230000008468 bone growth Effects 0.000 description 3
- 241000692569 Stylephorus chordatus Species 0.000 description 2
- 230000037182 bone density Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
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Abstract
The utility model relates to a novel screw thread metal spicule belongs to orthopedics medical instrument field. The two ends of the needle body of the novel threaded metal spicule are respectively provided with a blade part of a triangular pyramid, which is respectively defined as a first blade part and a second blade part; the part of the needle body close to the first edge part is provided with double threads to form a thread section. The part of the needle body of the utility model, which is close to the first cutting part, is provided with the double-thread, which can reduce the time for the metal spicule to be drilled in or screwed out during the operation; the external diameters of the double threads are different, so that the growth space of bone is increased, and the internal fixation failure caused by the implantation looseness of bone pins is effectively reduced; the tail part of the thread section is provided with a step, so that the thread section can be implanted or matched with a bracket for use according to requirements.
Description
Technical Field
The utility model relates to a novel screw thread metal spicule belongs to orthopedics medical instrument field.
Background
In the bone surgery, the metal spicule is a common surgical instrument for internal fixation, traction or guidance during the fracture surgery. In the process of orthopedic surgery, a doctor usually implants and fixes a bone needle by using a hand drill or an electric drill, but when drilling is carried out by adopting an edge part, because the thread pitch of the traditional threaded bone needle is small and the number of turns is large, particularly for the bone needle with a long thread section, the doctor usually needs to spend a long time to drill in or screw out the bone needle, so that the operation time is increased, and the pain of a patient is increased. The metal spicule in the prior art has the following technical defects:
1. the traditional threaded spicule has small thread pitch and multiple turns, and particularly for spicules with long thread sections, an operator usually needs to spend a long time to drill in or screw out the spicule, so that the operation time is increased, and the pain of a patient is also increased.
2. The existing metal spicule has small screw pitch, more turns and small thread design, causes insufficient holding force in sclerotin, is easy to loosen and causes internal fixation failure.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art, provides a novel threaded metal spicule which can be quickly drilled into or screwed out, and reduces the operation time.
The novel threaded metal spicule comprises a needle body with a smooth and cylindrical surface, wherein the two ends of the needle body are respectively provided with a blade part of a triangular pyramid, which is respectively defined as a first blade part and a second blade part; the part of the needle body close to the first edge part is provided with double threads to form a thread section. Through setting up double-line screw thread, can realize boring into fast or the back-out of metal spicule in the operation to improve work efficiency, reduce the operation time.
Preferably, the double-thread screw comprises a first screw thread and a second screw thread, the outer diameters of the first screw thread and the second screw thread are different, more space is reserved for later bone growth, the holding force of the metal bone needle in the bone is enhanced after the double-thread screw is implanted, and internal fixation failure caused by loose bone needle implantation is effectively reduced.
Preferably, the double-start thread is one of a cortical bone thread, a cancellous bone thread, or a fine thread.
Preferably, the tail part of the thread section (namely, the end of the thread section, which is far away from the first blade part) is provided with a step, so that a limiting function is provided, and the tail part can be implanted or matched with a bracket for use according to the operation requirement. Further preferably, a gap is left between the tail of the double-thread and the step.
Preferably, the front end of the double-line thread on the thread section extends to the first edge part, so that the thread and the edge part are convenient to machine and good drilling capability is achieved.
Compared with the prior art, the beneficial effects of the utility model are that:
the part of the metal spicule body of the utility model, which is close to the first cutting part, is provided with double-thread threads, so that the drilling-in or screwing-out time of the metal spicule during operation can be shortened; the outer diameters of the two threads on the double-thread are different, so that the bone growth space is increased, and the internal fixation failure caused by the implantation looseness of the bone needle is effectively reduced; the tail part of the thread section is provided with a step, so that the thread section can be implanted or matched with a bracket for use according to requirements.
Drawings
FIG. 1 is a schematic view of the structure of embodiment 1;
FIG. 2 is an enlarged view of the portion A of FIG. 1;
FIG. 3 is a bottom view of a blade according to example 1;
FIG. 4 is a schematic structural view of example 2;
FIG. 5 is a partial enlarged view taken along line B in FIG. 4;
FIG. 6 is a bottom view of the blade section of example 2;
FIG. 7 is a schematic structural view of embodiment 3;
FIG. 8 is an enlarged view of a portion of FIG. 7 taken along line C;
FIG. 9 is a bottom view of the blade of example 3.
In the figure: 1. a needle body; 2. a threaded segment; 3. a first blade section; 4. a second blade section; 5. a step;
21. double-thread screw threads; 22. a tail portion;
211. a first thread; 212. a second thread;
Detailed Description
Example 1
As shown in fig. 1-3, the novel threaded metal spicule of the present invention comprises a smooth cylindrical needle body 1, wherein two ends of the needle body 1 are respectively provided with a blade portion of a triangular pyramid, which is respectively defined as a first blade portion 3 and a second blade portion 4, and a double-threaded thread 21 is formed on the needle body 1 near the first blade portion 3 to form a threaded section 2.
The double-line thread 21 includes a first thread 211 and a second thread 212, and the first thread 211 and the second thread 212 have different outer diameters.
The tail part 22 of the thread section 2 is provided with a step 5 which provides a limiting function and can meet the requirements of implantation or the use of a matched bracket according to the operation requirements. The tail 22 of the thread segment 2 is spaced from the step 5.
The front end of the double thread 21 on the thread section 2 extends to the first edge part 3, so that the thread and the edge part are convenient to process and good drilling capability is achieved.
The double threads 21 on the threaded section 2 are double fine threads (i.e. two of the double threads 21 are fine threads).
During a general fracture operation, the unthreaded end of the metal bone needle is connected with an electric surgical drill, and the bone needle is drilled in a designated position according to the operation requirement, and the screw thread on the thread section 2 is a double-thread screw thread 21, so that the number of drilling turns is reduced by half compared with that of the traditional screw thread, and the time for drilling the bone needle is saved; after the bone needle is implanted, due to the normal growth of the bone, the designed outer diameters of the double-thread threads are different, the bone growth space is increased, the holding force of the implanted metal bone needle is improved, and the internal fixation failure caused by the implantation looseness of the bone needle is effectively reduced.
Example 2
As shown in fig. 4-6, the novel threaded metal spicule of the present invention comprises a smooth cylindrical needle body 1, wherein two ends of the needle body 1 are respectively provided with a cutting part of a triangular pyramid, which is respectively defined as a first cutting part 3 and a second cutting part 4, a threaded section 2 is provided at one end of the needle body 1, the threaded section 2 comprises a double-thread 21, and the double-thread 21 comprises a first thread 211 and a second thread 212.
The first thread 211 has a different outer diameter than the second thread 212.
The tail part of the thread section 2 is provided with a step 5, so that the limiting function is provided, and the implantation or the use of a support can be met according to the operation requirement.
A gap is reserved between the thread tail part 22 and the step 5, and the thread on the thread section 2 extends to the first edge part 3, so that the thread and the edge part are convenient to process, and the drilling capability is good.
The double thread 21 on the threaded section 2 is a double cortical bone thread.
The cortical bone thread is widely applied to cortical bone screws at present, the thread structure form is described in detail in YY 0018-2016 metal bone joint implant bone screw (metal bone screw for bone grafting implant) 3.14 and 4.1, the thread structure has the characteristics of narrow thread and large number of threads, and the thread structure is classified according to bone density and is suitable for cortical bone fracture surgery. When the cortical bone fracture operation is performed, a doctor can adopt the metal bone needle with the specification according to the requirement, and the implementation process of the fracture operation is the same as that of the first embodiment and is not detailed.
Example 3
As shown in fig. 6-9, the novel threaded metal spicule of the present invention comprises a smooth cylindrical needle body 1, wherein two ends of the needle body 1 are respectively provided with a blade portion of a triangular pyramid, which is respectively defined as a first blade portion 3 and a second blade portion 4, and a double-threaded thread 21 is formed on the needle body 1 near the first blade portion 3 to form a threaded section 2.
The double-line thread 21 includes a first thread 211 and a second thread 212, and the first thread 211 and the second thread 212 have different outer diameters.
The tail part of the thread section 2 is provided with a step 5, which provides a limiting function and can meet the requirements of implantation or the use of a matched bracket according to the operation requirements.
A gap is reserved between the thread tail part 22 and the step 5, and threads on the thread section 2 extend to the first edge part 3, so that the threads and the edge part are convenient to process, and the drilling capability is good.
The double thread 21 on the thread section 2 is double cancellous bone thread
The spongy bone threads are widely applied to spongy bone screws at present, the thread structure form is described in detail in YY 0018-2016 Metal bone Joint implant bone screw 3.13 and 4.1, the spongy bone screw has the characteristics of wide threads and few threads, and is suitable for spongy bone fracture surgery according to bone density classification. When the cancellous bone fracture operation is performed, a doctor can adopt the metal bone needle with the specification according to the requirement, and the implementation process of the fracture operation is the same as that of the first embodiment and is not described in detail.
The utility model discloses in to the description of the direction and the relative position relation of structure, about all around description about, do not constitute right the utility model discloses a restriction only is the description convenient.
Claims (6)
1. The utility model provides a novel screw thread metal spicule, includes smooth columniform needle body (1) in surface, and needle body (1) both ends respectively are equipped with the cutting part of triangular pyramid, are defined as first cutting part (3) and second cutting part (4) respectively, its characterized in that, and double-line screw thread (21) are seted up to the part that is close to first cutting part (3) on needle body (1), form screw thread section (2).
2. The new threaded metal bone pin according to claim 1, characterized in that the double thread (21) comprises a first thread (211) and a second thread (212), the first thread (211) and the second thread (212) having different external diameters.
3. A new threaded metal bone needle according to claim 1 or 2, characterized in that the double thread (21) is one of a double cortical thread, a double cancellous thread or a double fine thread.
4. A new threaded metal bone pin according to claim 1 or 2, characterized in that the tail (22) of the threaded segment (2) is provided with a step (5).
5. A new threaded metal bone pin according to claim 4, characterized in that a gap is left between the tail (22) of the threaded segment (2) and the step (5).
6. A new threaded metal bone pin according to claim 1, 2 or 5, characterized in that the front end of the double thread (21) in the thread segment (2) extends up to the first blade (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221273242.4U CN217566208U (en) | 2022-05-24 | 2022-05-24 | Novel threaded metal spicule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221273242.4U CN217566208U (en) | 2022-05-24 | 2022-05-24 | Novel threaded metal spicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217566208U true CN217566208U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221273242.4U Active CN217566208U (en) | 2022-05-24 | 2022-05-24 | Novel threaded metal spicule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217566208U (en) |
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2022
- 2022-05-24 CN CN202221273242.4U patent/CN217566208U/en active Active
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