CN112603508A - Metal spicule - Google Patents
Metal spicule Download PDFInfo
- Publication number
- CN112603508A CN112603508A CN202011507455.4A CN202011507455A CN112603508A CN 112603508 A CN112603508 A CN 112603508A CN 202011507455 A CN202011507455 A CN 202011507455A CN 112603508 A CN112603508 A CN 112603508A
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- CN
- China
- Prior art keywords
- thread
- head
- bone
- rod
- threaded portion
- 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.)
- Pending
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- 239000002184 metal Substances 0.000 title claims abstract description 23
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 47
- 238000010079 rubber tapping Methods 0.000 claims abstract description 10
- 230000007423 decrease Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 3
- 230000000399 orthopedic effect Effects 0.000 abstract description 3
- 210000004872 soft tissue Anatomy 0.000 abstract description 2
- 208000010392 Bone Fractures Diseases 0.000 description 6
- 206010017076 Fracture Diseases 0.000 description 6
- 210000001699 lower leg Anatomy 0.000 description 6
- 239000012634 fragment Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 208000027502 Ankle fracture Diseases 0.000 description 1
- 241000131317 Capitulum Species 0.000 description 1
- 206010061156 Finger deformity Diseases 0.000 description 1
- 206010031264 Osteonecrosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001936 parietal effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Neurology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a metal bone needle for orthopedics. The metal spicule comprises a rod part, a thread part and a head part which are integrated, and is structurally characterized in that the head part is a self-tapping drill bit, the diameter of the rod part is larger than that of the thread part, and a shoulder part in a circular truncated cone shape is arranged between the rod part and the thread part; the diameter of the thread part is gradually reduced from the rod part to the head part, and the thread on the thread part is gradually increased from the rod part to the head part; the thread part and the head part are provided with cutting edges, the cutting edges are provided with chip grooves, and the thread on the thread part is gradually increased from the rod part to the head part. The invention has the advantages of no need of pre-drilling, no bone tissue loss, soft tissue protection, simple and convenient operation and reliable fixation.
Description
Technical Field
The invention relates to a metal bone needle for orthopedics.
Background
When the fracture is reduced, a kirschner wire or a common screw is usually implanted into a human body for traction or plays a role in internal fixation during orthopedic surgery. Although the Kirschner wire is simple to operate, the following disadvantages exist: the bone pieces are not firmly fixed and are easy to slide and rotate; the bone plate is high in toughness and easy to bend to cause the movement of the bone plate; after fixation, it is easy to move into the joint or out of the skin to cause infection. Although the common screw has a certain holding force, the following disadvantages still exist: the operation process is complex, a hole needs to be drilled in advance, a certain bone mass can be lost when the bone slices are pressed in advance, and the thread space of the screw is larger, so that the holding force of the screw is limited, and the fixing effect on cancellous bone is poor; may cause crushing of the bone fragments; not for smaller bone fragments.
Disclosure of Invention
The invention aims to solve the technical problem of providing a metal spicule which does not need to be drilled in advance, has no loss of bone tissues, protects soft tissues, is simple and convenient to operate and is reliable in fixation.
The technical scheme adopted by the invention for solving the problems is as follows: the metal spicule comprises a rod part, a thread part and a head part which are of an integrated structure, and is structurally characterized in that the head part is a self-tapping drill bit, the diameter of the rod part is larger than that of the thread part, and a shoulder part which is in a circular truncated cone shape is arranged between the rod part and the thread part.
The diameter of the thread part is gradually reduced from the rod part to the head part, and the thread on the thread part is gradually increased from the rod part to the head part.
The invention is provided with cutting edges on the thread part and the head part, the cutting edges are provided with chip grooves, and the thread on the thread part is gradually enlarged from the rod part to the head part.
The self-tapping drill bit is a tip in a triangular pyramid shape.
The inclination angle of the truncated cone-shaped shoulder part is 68 degrees.
Compared with the prior art, the invention has the following beneficial effects: 1. the head of the metal spicule is a self-tapping drill, when in use, a bone drill is not needed to be used for drilling in advance, no bone tissue is lost, the self-tapping drill is matched with a cutting edge and a thread part, and can drill holes on bones at a low speed, so that excessive bone chips and heat are avoided due to the reduction of friction, the occurrence of bone necrosis caused by high temperature is prevented, and the operation risk is reduced; 2. the head of the metal bone needle is quickly and simply inserted into a bone, so that the operation time is shortened, the operation cost is obviously reduced, bone fragments are pushed to two sides by the triangular pyramid tip of the head, the combination gap between the bone and the thread part is reduced, the holding force of the metal bone needle is increased, the thread of the thread part is dense, the metal bone needle is more suitable for spongy bone with a spongy structure, and the double-thread design of the thread part ensures that compact bone fragments are filled between the thread part and a trabecular bone; 3. taking the metal bone needle with the thread diameter of 2.2mm and the thread length of 40mm as an example, the metal bone needle is compared with a spongy bone screw (the thread diameter of 4.0mm and the thread length of 40mm) with a diameter larger than that of the metal bone needle in the fixing effect in the middle-density spongy bone fracture, although the diameter of the metal bone needle is much smaller, compared with the spongy bone screw in the aspect of mechanical performance, the metal bone needle has no statistical difference, and in addition, the metal bone needle is used, and the average fracture fixing time is shortened by 44%.
Drawings
Fig. 1 is a perspective view of embodiment 1 of the present invention.
Fig. 2 is a front view of embodiment 1 of the present invention.
Fig. 3 is a state diagram of the hammer finger according to embodiment 1 of the present invention.
FIG. 4 is a view showing a state of use of embodiment 1 of the present invention applied to an intra-phalangeal joint fracture.
Fig. 5 is a perspective view of embodiment 2 of the present invention.
Fig. 6 is a front view of embodiment 2 of the present invention.
FIG. 7 is a view showing the state of use of embodiment 2 of the present invention applied to fractures in the distal radius joint.
FIG. 8 is a view showing a state of use of example 2 of the present invention applied to a fracture of the capitulum radius.
Fig. 9 is a perspective view of embodiment 3 of the present invention.
Fig. 10 is a front view of embodiment 3 of the present invention.
Fig. 11 is a view showing the state of use of example 3 of the present invention applied to comminuted parietal fracture of the distal tibia.
FIG. 12 is a view showing the state of use of example 3 of the present invention applied to an internal ankle fracture.
Detailed Description
Example 1:
referring to fig. 1 to 2, the present embodiment includes a shaft portion 1, a threaded portion 2, and a head portion 3, which are integrally formed, the thread of the threaded portion 2 is a single thread, the head portion 3 is a self-tapping drill, which has a triangular tip, the diameter of the shaft portion 1 is larger than that of the threaded portion 2, a shoulder portion 4 having a truncated cone shape is provided between the shaft portion 1 and the threaded portion 2, and an inclination angle of the shoulder portion 4 is 68 °.
The shoulder 4 between the shank 1 and the threaded portion 2 is similar to the screw tail of a conventional screw, and if necessary, the size of the shoulder 4 can be increased by using a washer to facilitate pressurization. The thread of the thread part 2 can be provided with lengths and diameters of different specifications so as to be suitable for bone blocks with different positions and sizes.
Referring to fig. 3-4, the present embodiment is used without pre-drilling, and the head 3 is quickly and easily inserted into the bone, thereby reducing the operation time without loss of bone tissue. The bone chips are pushed to both sides by the triangular pyramid-shaped tip of the head 3, the combination gap between the bone and the thread part 2 is reduced, the holding force of the metal spicule is increased, and the thread of the thread part 2 is dense, so that the bone chips are more suitable for spongy cancellous bone. When in fixation, one-time successful fixation is strived to be in place, needle withdrawal is strictly forbidden, looseness caused by repeated fixation is avoided, and fixation to the contralateral cortex is required. When the tail of the nail is cut, only vertical shearing force relative to the nail can be exerted, and acting force in other directions cannot be exerted; the tail end should be left.
Example 2:
referring to fig. 5 to 6, the present embodiment includes a shaft portion 1, a thread portion 2, and a head portion 3, which are integrally formed, the thread of the thread portion 2 is a double thread, the head portion 3 is a self-tapping drill having a triangular tip, the diameter of the shaft portion 1 is larger than that of the thread portion 2, a shoulder portion 4 having a truncated cone shape is provided between the shaft portion 1 and the thread portion 2, and an inclination angle of the shoulder portion 4 is 68 °. The diameter of the threaded portion 2 gradually decreases from the shank 1 toward the head 3, and the thread on the threaded portion 2 gradually increases from the shank 1 toward the head 3.
The shoulder 4 between the shank 1 and the threaded portion 2 is similar to the screw tail of a conventional screw, and if necessary, the size of the shoulder 4 can be increased by using a washer to facilitate pressurization. The thread of the thread part 2 can be provided with lengths and diameters of different specifications so as to be suitable for bone blocks with different positions and sizes.
Referring to fig. 7 to 8, the present embodiment is used in the same manner as embodiment 1.
Example 3:
referring to fig. 9 to 10, the present embodiment includes a shaft portion 1, a threaded portion 2, and a head portion 3, which are integrally formed, the threads of the threaded portion 2 are double threads, the head portion 3 is a self-tapping drill, which has a triangular tip, the diameter of the shaft portion 1 is larger than that of the threaded portion 2, a shoulder portion 4 having a truncated cone shape is provided between the shaft portion 1 and the threaded portion 2, and the inclination angle of the shoulder portion 4 is 68 °. The thread portion 2 and the head portion 3 are provided with cutting edges 5, the cutting edges 5 are provided with chip grooves 6, and the thread on the thread portion 2 is gradually enlarged from the shank portion 1 toward the head portion 3.
The shoulder 4 between the shank 1 and the threaded portion 2 is similar to the screw tail of a conventional screw, and if necessary, the size of the shoulder 4 can be increased by using a washer to facilitate pressurization. The thread of the thread part 2 can be provided with lengths and diameters of different specifications so as to be suitable for bone blocks with different positions and sizes.
Referring to fig. 11 to 12, the present embodiment is used in the same manner as embodiment 1.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011507455.4A CN112603508A (en) | 2020-12-18 | 2020-12-18 | Metal spicule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011507455.4A CN112603508A (en) | 2020-12-18 | 2020-12-18 | Metal spicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112603508A true CN112603508A (en) | 2021-04-06 |
Family
ID=75240678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011507455.4A Pending CN112603508A (en) | 2020-12-18 | 2020-12-18 | Metal spicule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112603508A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6250866B1 (en) * | 2000-02-11 | 2001-06-26 | Olympic Manufacturing Group, Inc. | Self-drilling, self-tapping screw for concrete blocks |
| CN201642299U (en) * | 2010-05-24 | 2010-11-24 | 范存义 | Self-drill break-away fragment fixation pin |
| CN204618373U (en) * | 2015-05-18 | 2015-09-09 | 浙江科惠医疗器械股份有限公司 | The broken formula Kirschner wire of a kind of band pressurization |
| CN207152639U (en) * | 2016-12-29 | 2018-03-30 | 北京市富乐科技开发有限公司 | A kind of double pointed gradual change Kirschner wire of double precision |
| WO2018176866A1 (en) * | 2017-03-31 | 2018-10-04 | 重庆西山科技股份有限公司 | Ultrasound bone drill bit and ultrasonic bone knife system using same |
| CN109567915A (en) * | 2018-12-28 | 2019-04-05 | 浙江康慈医疗科技有限公司 | A kind of metal bone needle with drill bit function |
| US10729478B1 (en) * | 2019-11-22 | 2020-08-04 | Retrofix Screws, Llc | Cannulated orthopedic screw and method of reducing a fracture of the lateral malleolus |
| CN216090726U (en) * | 2020-12-18 | 2022-03-22 | 浙江康慈医疗科技有限公司 | Metal spicule |
-
2020
- 2020-12-18 CN CN202011507455.4A patent/CN112603508A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6250866B1 (en) * | 2000-02-11 | 2001-06-26 | Olympic Manufacturing Group, Inc. | Self-drilling, self-tapping screw for concrete blocks |
| CN201642299U (en) * | 2010-05-24 | 2010-11-24 | 范存义 | Self-drill break-away fragment fixation pin |
| CN204618373U (en) * | 2015-05-18 | 2015-09-09 | 浙江科惠医疗器械股份有限公司 | The broken formula Kirschner wire of a kind of band pressurization |
| CN207152639U (en) * | 2016-12-29 | 2018-03-30 | 北京市富乐科技开发有限公司 | A kind of double pointed gradual change Kirschner wire of double precision |
| WO2018176866A1 (en) * | 2017-03-31 | 2018-10-04 | 重庆西山科技股份有限公司 | Ultrasound bone drill bit and ultrasonic bone knife system using same |
| CN109567915A (en) * | 2018-12-28 | 2019-04-05 | 浙江康慈医疗科技有限公司 | A kind of metal bone needle with drill bit function |
| US10729478B1 (en) * | 2019-11-22 | 2020-08-04 | Retrofix Screws, Llc | Cannulated orthopedic screw and method of reducing a fracture of the lateral malleolus |
| CN216090726U (en) * | 2020-12-18 | 2022-03-22 | 浙江康慈医疗科技有限公司 | Metal spicule |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210406 |