CN109276305B - Orthopedic locking screw - Google Patents
Orthopedic locking screw Download PDFInfo
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- CN109276305B CN109276305B CN201811098670.6A CN201811098670A CN109276305B CN 109276305 B CN109276305 B CN 109276305B CN 201811098670 A CN201811098670 A CN 201811098670A CN 109276305 B CN109276305 B CN 109276305B
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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
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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
- A61B17/8625—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)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the field of medical equipment, in particular to an orthopedic locking screw which comprises a screw main body and a screw head arranged at the bottom end of the screw main body, wherein the top end of the screw main body is welded with a screw tail which is movably connected with a power device, the outer circumferential wall of the screw main body is carved with external threads, the top end of the screw main body is sleeved with a ladder-shaped ring, the inner wall of the ladder-shaped ring is carved with internal threads, the upper surface of the ladder-shaped ring is provided with a rectangular groove, the inner wall surface of the screw main body is provided with a clamping groove, an anti-broken screw device is embedded in an inner cavity of the screw main body, the outer side surface of the screw head is provided with a through hole, a fixing structure is embedded in the inner cavity of the screw head, and the top end of the fixing structure sequentially penetrates through the screw main body and the screw tail, meanwhile, the nail can be prevented from being removed, the smooth rehabilitation process of the patient is ensured, the application range is wide, and the practicability is high.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an orthopedic locking screw.
Background
At present, in the process of repairing fractured bones at the moment, locking screws are the most basic and important medical apparatus and instruments, and are matched with a locking and pressurizing bone plate to form a firm internal fixing support, so that the bones are recombined to assist the bones to grow again.
Disclosure of Invention
The invention aims to solve the problem that the locking screw in the prior art is loosened due to broken screw, and provides an orthopedic locking screw
In order to achieve the purpose, the invention adopts the following technical scheme:
designing an orthopedic locking screw, which comprises a screw main body and a screw head arranged at the bottom end of the screw main body, wherein the top end of the screw main body is welded with a screw tail, the screw tail is movably connected with a power device, external threads are carved on the circumferential outer wall of the screw main body, a trapezoidal ring is sleeved at the top end of the screw main body, internal threads are carved on the inner wall of the trapezoidal ring, the trapezoidal ring is in threaded connection with the screw main body, a rectangular groove is formed in the upper surface of the trapezoidal ring, a clamping groove is formed in the surface of the inner wall of the screw main body, a screw breakage preventing device is embedded in an inner cavity of the screw main body, a through hole is formed in the outer side surface of the screw head, a fixing structure is embedded in the inner cavity of the screw head, and the top end of the fixing structure sequentially penetrates through the screw main body and the screw tail;
the nail tail comprises a base, a rectangular block is welded on the circumference of the outer wall of the base and matched with the rectangular groove, a groove is formed in the center of the upper surface of the base, a convex block is welded in the center of an inner cavity of the groove, and the nail tail is matched and connected with a power device through the groove and the convex block;
the fixed structure comprises guide cables, pull rings are sleeved at the top ends of the guide cables, the bottom ends of the guide cables are in pin connection with two U-shaped parts, the two U-shaped parts are connected through thin guide cables, the left side and the right side of the bottom end of the U-shaped part at the upper end are in pin connection with first rectangular rods, one end of the outer side of each first rectangular rod is in pin connection with a round rod, the left side and the right side of the bottom end of the U-shaped part at the lower end are in pin connection with second rectangular rods, and springs are clamped at the outer sides of the bottom ends of the second rectangular rods;
the broken nail prevention device comprises a cylinder, a connecting rod is welded on the circumference of the outer wall of the cylinder, and a cutter-shaped block is welded at one end of the outer side of the connecting rod.
Preferably, the screw body is cylindrical and the head is conical.
Preferably, the length of the first rectangular rod and the length of the second rectangular rod are smaller than the radius of the round cross section of the nail head when the first rectangular rod and the second rectangular rod are positioned in the horizontal direction.
Preferably, the clamping grooves are arranged on the inner wall surface of the screw main body in a clearance mode, and at least four vertical rows of clamping grooves are formed.
Preferably, the number of the knife-shaped blocks is not less than forty, and an included angle between the knife-shaped blocks and the horizontal direction is 45 degrees.
Preferably, the number of the round rods is not less than four.
The orthopedic locking screw has the beneficial effects that:
1. the broken nail prevention device comprises at least forty knife-shaped blocks, the knife-shaped blocks are matched with the clamping grooves, the included angle between the knife-shaped blocks and the horizontal direction is 45 degrees, upward bending can ensure that the broken locking screws cannot be lost in the body of a patient, the knife-shaped blocks are densely arranged to ensure the protection effect on each part of the locking screws, the risk of broken nails can be effectively reduced, and the operation time is reduced;
2. the fixing device can rotate the trapezoidal ring to fix one surface of the surgical wound after the screw penetrates through the bone, then pulls the pull ring, the pull ring is loosened after the nail head leaks, the spring extends under the action of elasticity, and the first rectangular rod and the second rectangular rod can be driven to move downwards to push one end of the round rod to extend out of the nail head, so that the locking screw is firmly fixed, the locking screw is prevented from loosening, the risk of illness deterioration is reduced, and the smooth recovery process of a patient is ensured;
3. the method that the groove and the lug are combined is adopted at the nail tail, so that the connection between the power device and the locking screw is firmer, the occurrence of nail-removing is reduced, the application range is wide, and the practicability is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the retaining ring of the present invention;
FIG. 3 is a top view of the tail of the nail of the present invention;
FIG. 4 is a cross-sectional view of the body of the screw of the present invention;
FIG. 5 is a schematic structural view of the nail breakage preventing device of the present invention;
fig. 6 is a schematic structural view of the fixing structure of the present invention.
In the figure: the screw comprises a screw body 1, a screw tail 2, a base 21, a rectangular block 22, a groove 23, a convex block 24, a trapezoidal ring 3, a thread 4, a nail head 5, a through hole 6, a fixing structure 7, a guide rope 71, a pull ring 72, a U-shaped part 73, a first rectangular rod 74, a round rod 75, a second rectangular rod 76, a spring 77, a clamping groove 8, a nail breakage prevention device 9, a cylinder 91, a connecting rod 92, a knife-shaped block 93 and a rectangular groove 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, an orthopedic locking screw comprises a screw body 1 and a nail head 5 installed at the bottom end of the screw body 1, wherein the screw body 1 is cylindrical, the nail head 5 is conical, a nail tail 2 is welded at the top end of the screw body 1, the nail tail 2 is movably connected with a power device, external threads 4 are carved on the outer circumferential wall of the screw body 1, a ladder-shaped ring 3 is sleeved at the top end of the screw body 1, internal threads are carved on the inner wall of the ladder-shaped ring 3, the ladder-shaped ring 3 is in threaded connection with the screw body 1, a rectangular groove 10 is formed in the upper surface of the ladder-shaped ring 3, clamping grooves 8 are formed in the inner wall surface of the screw body 1, the clamping grooves 8 are arranged on the inner wall surface of the screw body 1 in a clearance manner, the clamping grooves 8 are at least four vertical rows, a nail breakage preventing device 9 is embedded in the inner cavity of the screw body 1, and a through hole 6 is formed in the outer side surface of the nail head 5, a fixing structure 7 is embedded in an inner cavity of the nail head 5, and the top end of the fixing structure 7 penetrates through the screw main body 1 and the nail tail 2 in sequence;
the nail tail 2 comprises a base 21, a rectangular block 22 is welded on the circumference of the outer wall of the base 21, the rectangular block 22 is matched with the rectangular groove 10, a groove 23 is formed in the center of the upper surface of the base 21, a convex block 24 is welded in the center of the inner cavity of the groove 23, and the nail tail 2 is connected with a power device in a matched mode through the groove 22 and the convex block 24;
the fixed structure 7 comprises a guide cable 71, a pull ring 72 is sleeved at the top end of the guide cable 71, the bottom end of the guide cable 71 is in pin connection with two U-shaped parts 73, the two U-shaped parts 73 are connected through a thin guide cable, the left side and the right side of the bottom end of the U-shaped part 73 at the upper end are in pin connection with a first rectangular rod 74, one end of the outer side of the first rectangular rod 74 is in pin connection with a round rod 75, the number of the round rods 75 is not less than four, the left side and the right side of the bottom end of the U-shaped part 73 at the lower end are in pin connection with a second rectangular rod 76, the lengths of the first rectangular rod 74 and the second rectangular rod 76 are smaller than the radius of the cross section of the nail head 5 in the horizontal direction, a spring 77 is clamped at the outer side of the bottom end of the second rectangular rod 76, the spring 77 is a compression spring, and the elastic coefficient is 20N/CM;
prevent disconnected nail device 9 includes cylinder 91, the outer wall circumference welding of cylinder 91 has connecting rod 91, the outside one end welding of connecting rod 91 has sword type piece 92, forty are no less than to the quantity of sword type piece 92, and sword type piece 92 is 45 degrees with the horizontal direction contained angle.
The working principle is as follows: in the operation process, the power device can enable the locking screw to be connected with the power device more stably through the groove 23 and the convex block 24 which are arranged on the upper surface of the nail tail 2, the nail falling off condition is prevented, at least forty knife-shaped blocks 93 are welded on the nail breakage preventing device 9 which is embedded in the locking screw, the knife-shaped blocks 93 are matched with the clamping grooves 8, the included angle between the knife-shaped blocks 93 and the horizontal direction is 45 degrees, the upward bending can ensure that the locking screw is not lost in the body of a patient under the condition of fracture, the knife-shaped blocks 93 are densely arranged to ensure the protection effect on each part of the locking screw, after the operation screw penetrates through the bone, the trapezoidal ring 3 is rotated to fix one surface of the wound surface of the operation, then the pull ring 72 is pulled, the pull ring 72 is released after the nail head 5 leaks, the spring 77 extends under the action of elasticity, and can drive one end of the first rectangular rod 74 and the second rectangular rod 76 to move downwards to push the nail head to extend out, the locking screw is firmly fixed, the occurrence of broken screws and unstable fixation is reduced, the recovery of a patient is accelerated, the psychological burden of the patient is reduced, and the locking screw is suitable for popularization and use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides an orthopedics locking screw, includes screw main part (1) and installs pin head (5) at screw main part (1) bottom, its characterized in that: the top end of the screw main body (1) is welded with a screw tail (2), the screw tail (2) is movably connected with a power device, external threads (4) are carved on the circumferential outer wall of the screw main body (1), a trapezoidal ring (3) is sleeved at the top end of the screw main body (1), the inner wall of the ladder-shaped ring (3) is carved with internal threads, the ladder-shaped ring (3) is in threaded connection with the screw main body (1), the upper surface of the ladder-shaped ring (3) is provided with a rectangular groove (10), the inner wall surface of the screw main body (1) is provided with a clamping groove (8), an anti-broken screw device (9) is embedded in an inner cavity of the screw main body (1), a through hole (6) is arranged on the outer side surface of the screw head (5), a fixing structure (7) is embedded in an inner cavity of the nail head (5), and the top end of the fixing structure (7) penetrates through the screw main body (1) and the nail tail (2) in sequence;
the nail tail (2) comprises a base (21), a rectangular block (22) is welded on the circumference of the outer wall of the base (21), the rectangular block (22) is matched with the rectangular groove (10), a groove (23) is formed in the center of the upper surface of the base (21), a convex block (24) is welded in the center of an inner cavity of the groove (23), and the nail tail (2) is connected with a power device in a matched mode through the groove (23) and the convex block (24);
the fixed structure (7) comprises guide cables (71), pull rings (72) are sleeved at the top ends of the guide cables (71), U-shaped parts (73) are connected to the bottom ends of the guide cables (71) through pin shafts, two U-shaped parts (73) are arranged and connected through thin guide cables, first rectangular rods (74) are connected to the left and right sides of the bottom ends of the U-shaped parts (73) at the upper ends of the guide cables through pin shafts, a round rod (75) is connected to one end of the outer side of each first rectangular rod (74) through a pin shaft, second rectangular rods (76) are connected to the left and right sides of the bottom ends of the U-shaped parts (73) at the lower ends of the guide cables through pin shafts, and springs (77) are clamped to the outer sides of the bottom ends of the second rectangular rods (76);
the nail breakage preventing device (9) comprises a cylinder (91), a connecting rod (92) is welded on the circumference of the outer wall of the cylinder (91), and a cutter-shaped block (93) is welded at one end of the outer side of the connecting rod (92);
the length of the first rectangular rod (74) and the second rectangular rod (76) is smaller than the radius of the cross section circle of the nail head (5) when the first rectangular rod and the second rectangular rod are positioned in the horizontal direction.
2. An orthopaedic locking screw according to claim 1, wherein the screw body (1) is cylindrical and the head (5) is conical.
3. An orthopedic locking screw according to claim 1, characterized in that the locking grooves (8) are arranged on the inner wall surface of the screw body (1) with clearance and the locking grooves (8) are at least four vertical rows.
4. An orthopaedic locking screw according to claim 1, wherein the number of the blade-shaped blocks (93) is not less than forty and the angle of the blade-shaped blocks (93) to the horizontal is 45 degrees.
5. An orthopaedic locking screw according to claim 1, wherein the number of said round rods (75) is not less than four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811098670.6A CN109276305B (en) | 2018-09-19 | 2018-09-19 | Orthopedic locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811098670.6A CN109276305B (en) | 2018-09-19 | 2018-09-19 | Orthopedic locking screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109276305A CN109276305A (en) | 2019-01-29 |
| CN109276305B true CN109276305B (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811098670.6A Active CN109276305B (en) | 2018-09-19 | 2018-09-19 | Orthopedic locking screw |
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| Country | Link |
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| CN (1) | CN109276305B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111956313A (en) * | 2020-08-14 | 2020-11-20 | 中国人民解放军联勤保障部队第九二0医院 | Palm bone lengthening device |
| CN112515754B (en) * | 2020-12-15 | 2022-02-22 | 有研医疗器械（北京）有限公司 | Medical instrument screw |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203829025U (en) * | 2014-03-25 | 2014-09-17 | 任海龙 | Combined-type bone nail |
| CN204671262U (en) * | 2015-05-06 | 2015-09-30 | 山东威高骨科材料股份有限公司 | A kind of high-strength bone screw base |
| CN205814412U (en) * | 2016-06-01 | 2016-12-21 | 朱朝晖 | The screw of a kind of orthopaedics arthrodesis and screwdriver |
| CN108498155A (en) * | 2018-04-26 | 2018-09-07 | 重庆医科大学附属永川医院 | A kind of anti-rotation pedicle screw of self-locking and its application method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104665913B (en) * | 2013-11-26 | 2017-06-06 | 财团法人工业技术研究院 | Bionic fixing device and pulling-out device thereof |
-
2018
- 2018-09-19 CN CN201811098670.6A patent/CN109276305B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203829025U (en) * | 2014-03-25 | 2014-09-17 | 任海龙 | Combined-type bone nail |
| CN204671262U (en) * | 2015-05-06 | 2015-09-30 | 山东威高骨科材料股份有限公司 | A kind of high-strength bone screw base |
| CN205814412U (en) * | 2016-06-01 | 2016-12-21 | 朱朝晖 | The screw of a kind of orthopaedics arthrodesis and screwdriver |
| CN108498155A (en) * | 2018-04-26 | 2018-09-07 | 重庆医科大学附属永川医院 | A kind of anti-rotation pedicle screw of self-locking and its application method |
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| Publication number | Publication date |
|---|---|
| CN109276305A (en) | 2019-01-29 |
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Effective date of registration: 20210318 Address after: 136299 group 5, Heiniu village, Shoushan Town, Longshan District, Liaoyuan City, Jilin Province Applicant after: Lu Huanbiao Address before: 262100 No.606, unit 3, building 3, No.86, Shopping Mall Road, Anqiu City, Weifang City, Shandong Province Applicant before: Ding Jingxuan |
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