CN112274236A - Assembled easily-detachable bone nail - Google Patents
Assembled easily-detachable bone nail Download PDFInfo
- Publication number
- CN112274236A CN112274236A CN202011220193.3A CN202011220193A CN112274236A CN 112274236 A CN112274236 A CN 112274236A CN 202011220193 A CN202011220193 A CN 202011220193A CN 112274236 A CN112274236 A CN 112274236A
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- Prior art keywords
- nail body
- groove
- nail
- bone
- dovetail
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
An assembled easily-detachable bone nail relates to the technical field of medical instruments and comprises a bone nail body, wherein the bone nail body comprises an outer nail body and an inner nail body, and the outer nail body is provided with an inner cavity, an insertion cavity and a sharp head part; the interior nail body includes from right side to left integrated into one piece's pull rod, nail pole, spine portion, still is equipped with the forked tail arris on the outer wall surface of nailing the pole, and the inner wall surface of inner chamber is equipped with the dovetail, and the tank bottom portion of dovetail still is equipped with logical groove A, and the right-hand member of the exterior nail body still integrated into one piece has and revolves the piece soon, revolves to be equipped with the internal thread hole on revolving the piece, and the downthehole spiro union of internal thread has the briquetting, is equipped with circular slot on the left end face of briquetting, revolves the lateral wall surface of piece and seted up logical. The bone screw dismounting device does not need to repeatedly cut the bone body during dismounting, avoids bone body damage during dismounting of the bone screw, and is simple and convenient to dismount and high in efficiency.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an assembled easily-detachable bone nail.
Background
Bone nails are common tools for orthopedic operations, and in clinic, because the bone nails are too long to remain in a patient, the problem that the bone nails are difficult to take out often occurs, an orthopedist turns to a medical engineer to perform the forms of trepanning, chiseling, artificially manufacturing grooves and the like on the bone of the patient, and although the bone nails can be taken out, new injuries are caused to the damaged bone of the patient.
In the prior patent literature, partial reducing bone nails are disclosed, but most of the schemes have complicated structures and are not strong in practicability.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses an assembled easily-detachable bone nail which is simple in structure, easy to assemble, favorable for disassembly and high in practicability.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the assembled bone nail easy to disassemble comprises a bone nail body, wherein the bone nail body comprises an outer nail body and an inner nail body, the outer nail body is provided with an inner cavity communicated with the right end face, the inner cavity extends leftwards and forms an insertion cavity in a reducing mode, the insertion cavity is communicated with the left end face of the outer nail body, a truncated cone-shaped pointed head part is arranged on the left end face of the outer nail body, the diameter of the left end face of the pointed head part is the same as that of a left port of the insertion cavity, the inner nail body comprises a pull rod, a nail rod and a pointed thorn part which are integrally formed from right to left, axial dovetail edges are further arranged on the outer wall surface of the nail rod, a dovetail groove is axially arranged on the inner wall surface of the inner cavity, the dovetail edges are matched with the dovetail groove for use, the nail rod is arranged in the inner cavity, the pointed thorn part is arranged in the insertion cavity, the inner nail body is connected with the outer nail body in a sliding mode, and the end part of the pointed thorn part and the head part form a pointed end of the bone, the dovetail groove is characterized in that a through groove A which penetrates through the outer wall surface of the outer nail body is further arranged at the bottom of the dovetail groove, the through groove A penetrates through the left end and the right end of the outer nail body respectively, the outer nail body is divided into an outer nail body A and an outer nail body B, a screwing block is further integrally formed at the right end of the outer nail body, an inner thread hole which penetrates through the left end surface and the right end surface is formed in the screwing block, a pressing block is screwed in the inner thread hole, a cutter groove which can be used for screwing a screwdriver is formed in the right end surface of the pressing block, a circular slot is formed in the left end surface of the pressing block, a pull rod is inserted into the circular slot and is in sliding connection with the circular slot, the inner diameter of the inner thread hole is larger than the maximum outer diameter of the inner nail body, a through groove B is formed in the surface of the side wall of the screwing block, the through groove B penetrates, the thickness of the metal plate is smaller than that of the screwing block, when the pressing block is not supported, the metal plate can be deformed and broken under the clamping of the operating forceps, and the through groove A and the through groove B are communicated with each other.
Preferably, the inner cavity and the insertion cavity are both of a circular truncated cone-shaped structure, the area of the left end face of the circular truncated cone-shaped structure is smaller than that of the right end face of the circular truncated cone-shaped structure, and the shape and the size of the inner nail body are matched with those of the circular truncated cone-shaped structure.
Preferably, there are one or two sets of dovetails, and each set has 2 dovetails, 2 dovetails being arranged symmetrically about the axis of the cavity.
Preferably, the dovetail edges are arranged in a group, and the left ends of the dovetail edges are abutted with the outer edge of the right end of the insertion cavity.
Preferably, the outer surfaces of the outer nail body A and the outer nail body B are provided with thread structures which can be used continuously.
Preferably, the screw block is of a regular hexagonal prism structure.
Preferably, the cutter groove is a cross-shaped cutter groove.
Preferably, the outer nail body and the inner nail body are both made of titanium alloy materials.
Preferably, the outer surface of the pull rod is provided with anti-skid grains.
The assembled easily-detachable bone nail has the beneficial effects that: the bone nail body is formed in an assembly mode, the structure of the bone nail body can be selected for bone nails with larger sizes and models, repeated cutting on bone bodies is not needed during disassembly, bone body damage during disassembly of the bone nail is avoided, the bone nail body is simple and convenient to disassemble, the efficiency is high, the workload of doctors can be effectively reduced, and the pain of patients is reduced.
Drawings
FIG. 1: the invention has a schematic cross-sectional structure;
FIG. 2: a cross-sectional view at A-A1 of the present invention;
FIG. 3: front view of the invention;
FIG. 4: a left view of the invention;
1: outer nail body a, 2: outer nail body B, 3: through groove a, 4: a screwing block, 5: insertion lumen left port, 6: inner nail body, 61: spike, 62: nail rod, 63: tie rod, 64: dovetail edge, 65: nail pole left end face, 7: tip portion, 8: external thread, 9: briquetting, 10: metal plate, 11: a sipe, 12: female screw hole, 13: insertion cavity, 14: inner cavity, 15: dovetail groove, 16: through groove B, 17: tip portion, 8: external thread, 9: briquetting, 10: metal plate, 11: a knife groove.
Detailed Description
The following description is only exemplary of the present invention and should not be construed as limiting the scope of the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Referring to FIGS. 1-4:
the utility model provides an assembled quick detachable bone nail, includes the bone nail body, the bone nail body include the outer nail body and the interior nail body, the outer nail body be equipped with the inner chamber 14 that link up the right side terminal surface, inner chamber 14 extend to left to form through the mode of reducing and insert chamber 13, insert the left end face that chamber 13 link up the outer nail body, be equipped with frustum-shaped point portion 7 at the left end face of the outer nail body, the diameter of the left end face of point portion 7 the same with the diameter of inserting chamber 13 left side port, the interior nail body include from the right side to left integrated into one piece's pull rod 63, nail pole 62, spine portion 61, still be equipped with along axial forked tail arris 64 on the outer wall surface of nail pole 62, the inner wall surface of inner chamber 14 along the axial be equipped with dovetail groove 15, spine arris 64 and dovetail groove 15 cooperation use, nail pole 62 locate in inner chamber 14, spine portion 61 locates and inserts in chamber 13, the inner nail body is connected with the outer nail body in a sliding mode, the end portion of the spike portion 61 and the spike portion 7 form a spike of the bone nail body together, the bottom of the dovetail groove 15 is further provided with a through groove A3 penetrating through the outer wall surface of the outer nail body, the through groove A3 penetrates through the left end and the right end of the outer nail body respectively and divides the outer nail body into an outer nail body A1 and an outer nail body B2, the right end of the outer nail body is further integrally formed with a screwing block 4, the screwing block 4 is provided with an inner threaded hole 12 penetrating through the left end face and the right end face, a pressing block 9 is screwed in the inner threaded hole 12, a cutter groove 11 allowing a screwdriver to be screwed is formed in the right end face of the pressing block 9, a circular slot is formed in the left end face of the pressing block 9, the pull rod 63 is inserted into the circular slot and is connected with the circular slot in a sliding mode, the inner diameter of the inner threaded hole 12 is larger than the maximum outer diameter of the inner nail body, and a through, the through groove B16 penetrates through the internal thread hole 12 and the left and right end faces of the screw block 4 respectively, a metal plate 10 is connected between the groove walls of the through groove B16, the thickness of the metal plate 10 is smaller than that of the screw block 4, when no pressing block 9 supports the metal plate 10, the metal plate 10 can be deformed and broken under the clamping of the surgical forceps, and the through groove A and the through groove B are mutually penetrated;
the inner cavity 14 and the insertion cavity 13 are both in a truncated cone-shaped structure, the area of the left end face of the truncated cone-shaped structure is smaller than that of the right end face, and the shape and the size of the inner nail body are matched with those of the truncated cone-shaped structure; the inner cavity 14 and the insertion cavity 13 of the round platform-shaped structure are convenient for taking out the inner nail body when being disassembled and fixed;
the dovetail edges 64 are in a group, 2 dovetail edges 64 are arranged in the group, and the 2 dovetail edges 64 are symmetrically arranged about the axis of the inner cavity 14; the 2 dovetail edges 64 can accurately position the outer nail body, so that the outer nail body and the inner nail body form a bone nail body together;
the outer surfaces of the outer nail body A1 and the outer nail body B2 are provided with thread structures which can be used continuously;
the screwing block 4 is of a regular hexagonal prism structure;
the cutter groove 11 is a cross-shaped cutter groove;
the outer nail body and the inner nail body are both made of titanium alloy materials;
the outer surface of the pull rod 63 is provided with anti-skid grains.
The use principle of the invention is as follows:
during the use, in the perforation of beating on the bone with the bone nail body screw in that assembles, treat that the fracture is recovered, when needing to dismantle, earlier screw down briquetting 9 through the screwdriver, clip pull rod 63 through the clamp, pull out the internal nail body of outer nail, pull out the back, the both ends of twisting piece 4 are twisted in the centre gripping of rethread clamp, with metal sheet 10 pinch-off, at this moment, owing to lost the limiting displacement of metal sheet 10, lead to groove A3 and lead to groove B16's each cell wall counterbalance, make the internal diameter of the external nail body be less than fenestrate internal diameter, at this moment, pull out the external nail body and perforate can.
Claims (9)
1. The utility model provides an assembled quick detachable bone nail which characterized in that: comprises a bone nail body, the bone nail body comprises an outer nail body and an inner nail body, the outer nail body is provided with an inner cavity which is communicated with the right end face, the inner cavity extends leftwards and is formed into an insertion cavity through a reducing mode, the insertion cavity is communicated with the left end face of the outer nail body, the left end face of the outer nail body is provided with a truncated cone-shaped pointed head part, the diameter of the left end face of the pointed head part is the same as that of a left port of the insertion cavity, the inner nail body comprises a pull rod, a nail rod and a pointed thorn part which are integrally formed from right to left, the outer wall surface of the nail rod is further provided with a dovetail edge along the axial direction, the inner wall surface of the inner cavity is provided with a dovetail groove along the axial direction, the dovetail edge is matched with the dovetail groove for use, the nail rod is arranged in the inner cavity, the pointed thorn part is arranged in the insertion cavity, the inner nail body is connected with the outer nail body in a sliding mode, and the end part of the pointed thorn, the dovetail groove is characterized in that a through groove A which penetrates through the outer wall surface of the outer nail body is further arranged at the bottom of the dovetail groove, the through groove A penetrates through the left end and the right end of the outer nail body respectively, the outer nail body is divided into an outer nail body A and an outer nail body B, a screwing block is further integrally formed at the right end of the outer nail body, an inner thread hole which penetrates through the left end surface and the right end surface is formed in the screwing block, a pressing block is screwed in the inner thread hole, a cutter groove which can be used for screwing a screwdriver is formed in the right end surface of the pressing block, a circular slot is formed in the left end surface of the pressing block, a pull rod is inserted into the circular slot and is in sliding connection with the circular slot, the inner diameter of the inner thread hole is larger than the maximum outer diameter of the inner nail body, a through groove B is formed in the surface of the side wall of the screwing block, the through groove B penetrates, the thickness of the metal plate is smaller than that of the screwing block, when the pressing block is not supported, the metal plate can be deformed and broken under the clamping of the operating forceps, and the through groove A and the through groove B are communicated with each other.
2. An assembled quick-release bone screw according to claim 1, characterized in that: the inner cavity and the insertion cavity are of a truncated cone-shaped structure, the area of the left end face of the truncated cone-shaped structure is smaller than that of the right end face of the truncated cone-shaped structure, and the shape and the size of the inner nail body are matched with those of the truncated cone-shaped structure.
3. An assembled quick-release bone screw according to claim 2, characterized in that: the forked tail arris have one or two sets of, and every group has 2 forked tail arriss respectively, 2 forked tail arriss set up about the axis symmetry of inner chamber.
4. A fabricated quick detachable bone nail according to claim 3, wherein: the dovetail edges are provided with a group, and the left ends of the dovetail edges are abutted to the outer edge of the right end of the insertion cavity.
5. An assembled quick-release bone screw according to claim 5, characterized in that: the outer surfaces of the outer nail body A and the outer nail body B are provided with thread structures which can be used continuously.
6. An assembled quick-release bone screw according to any one of claims 1 to 5, characterized in that: the screwing block is of a regular hexagonal prism structure.
7. An assembled quick-release bone screw according to any one of claims 1 to 5, characterized in that: the cutter groove is a cross-shaped cutter groove.
8. An assembled quick-release bone screw according to any one of claims 1 to 5, characterized in that: the outer nail body and the inner nail body are both made of titanium alloy materials.
9. An assembled quick-release bone screw according to any one of claims 1 to 5, characterized in that: the outer surface of the pull rod is provided with anti-skid grains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220193.3A CN112274236B (en) | 2020-11-05 | 2020-11-05 | Assembled easily-detachable bone nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220193.3A CN112274236B (en) | 2020-11-05 | 2020-11-05 | Assembled easily-detachable bone nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112274236A true CN112274236A (en) | 2021-01-29 |
| CN112274236B CN112274236B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011220193.3A Active CN112274236B (en) | 2020-11-05 | 2020-11-05 | Assembled easily-detachable bone nail |
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| Country | Link |
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| CN (1) | CN112274236B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050143735A1 (en) * | 2003-04-29 | 2005-06-30 | Kyle Richard F. | Double compression unloadable screw system |
| CA2649107A1 (en) * | 2006-04-12 | 2007-10-25 | Spinal Motion, Inc. | Posterior spinal device and method |
| TW201037176A (en) * | 2009-04-03 | 2010-10-16 | Hon Hai Prec Ind Co Ltd | Screw assembly |
| CN202537643U (en) * | 2012-02-24 | 2012-11-21 | 常州市海盈五金科技有限公司 | Fast demounting bone peg |
| WO2012174815A1 (en) * | 2011-06-23 | 2012-12-27 | 厦门大博颖精医疗器械有限公司 | Lock-pin central nail device |
| CN202960738U (en) * | 2012-12-08 | 2013-06-05 | 宁波市鄞州云帆工程咨询有限公司 | Bone nail with rapid disassembly function |
| CN203291014U (en) * | 2013-06-06 | 2013-11-20 | 常州市合力精密铸造有限公司 | Quick release type bone nail |
| US20140100612A1 (en) * | 2012-10-04 | 2014-04-10 | Loubert S. Suddaby | Apparatus and method for aligning a spine |
| CN103720509A (en) * | 2012-10-15 | 2014-04-16 | 无锡市世一电力机械厂 | Artificial amphiarthrosis with internally-arranged spring |
| CN204468250U (en) * | 2015-03-06 | 2015-07-15 | 胡明军 | A kind of hollow pressurization nail |
| CN106102613A (en) * | 2014-02-06 | 2016-11-09 | 英格奈特概念有限公司 | Bone screw assembly |
| CN207687166U (en) * | 2018-01-01 | 2018-08-03 | 中山市泰铭五金有限公司 | A kind of screw assemblies of anti-skidding anti-drop tooth |
| CN207949884U (en) * | 2018-01-11 | 2018-10-12 | 王飞 | A kind of special nail of orthopaedics of easy taking-up |
| CN208130043U (en) * | 2017-11-17 | 2018-11-23 | 徐海伟 | A kind of dedicated bone nail of orthopaedics of easy taking-up |
| CN211381711U (en) * | 2019-12-27 | 2020-09-01 | 山东大学齐鲁医院(青岛) | Bone nail capable of reducing diameter |
| CN211381712U (en) * | 2019-12-27 | 2020-09-01 | 山东大学齐鲁医院(青岛) | Bone nail convenient to take out |
-
2020
- 2020-11-05 CN CN202011220193.3A patent/CN112274236B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050143735A1 (en) * | 2003-04-29 | 2005-06-30 | Kyle Richard F. | Double compression unloadable screw system |
| CA2649107A1 (en) * | 2006-04-12 | 2007-10-25 | Spinal Motion, Inc. | Posterior spinal device and method |
| TW201037176A (en) * | 2009-04-03 | 2010-10-16 | Hon Hai Prec Ind Co Ltd | Screw assembly |
| WO2012174815A1 (en) * | 2011-06-23 | 2012-12-27 | 厦门大博颖精医疗器械有限公司 | Lock-pin central nail device |
| CN202537643U (en) * | 2012-02-24 | 2012-11-21 | 常州市海盈五金科技有限公司 | Fast demounting bone peg |
| US20140100612A1 (en) * | 2012-10-04 | 2014-04-10 | Loubert S. Suddaby | Apparatus and method for aligning a spine |
| CN103720509A (en) * | 2012-10-15 | 2014-04-16 | 无锡市世一电力机械厂 | Artificial amphiarthrosis with internally-arranged spring |
| CN202960738U (en) * | 2012-12-08 | 2013-06-05 | 宁波市鄞州云帆工程咨询有限公司 | Bone nail with rapid disassembly function |
| CN203291014U (en) * | 2013-06-06 | 2013-11-20 | 常州市合力精密铸造有限公司 | Quick release type bone nail |
| CN106102613A (en) * | 2014-02-06 | 2016-11-09 | 英格奈特概念有限公司 | Bone screw assembly |
| CN204468250U (en) * | 2015-03-06 | 2015-07-15 | 胡明军 | A kind of hollow pressurization nail |
| CN208130043U (en) * | 2017-11-17 | 2018-11-23 | 徐海伟 | A kind of dedicated bone nail of orthopaedics of easy taking-up |
| CN207687166U (en) * | 2018-01-01 | 2018-08-03 | 中山市泰铭五金有限公司 | A kind of screw assemblies of anti-skidding anti-drop tooth |
| CN207949884U (en) * | 2018-01-11 | 2018-10-12 | 王飞 | A kind of special nail of orthopaedics of easy taking-up |
| CN211381711U (en) * | 2019-12-27 | 2020-09-01 | 山东大学齐鲁医院(青岛) | Bone nail capable of reducing diameter |
| CN211381712U (en) * | 2019-12-27 | 2020-09-01 | 山东大学齐鲁医院(青岛) | Bone nail convenient to take out |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112274236B (en) | 2022-02-01 |
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