CN104970876A - Metal spicule - Google Patents
Metal spicule Download PDFInfo
- Publication number
- CN104970876A CN104970876A CN201510226102.XA CN201510226102A CN104970876A CN 104970876 A CN104970876 A CN 104970876A CN 201510226102 A CN201510226102 A CN 201510226102A CN 104970876 A CN104970876 A CN 104970876A
- Authority
- CN
- China
- Prior art keywords
- threaded portion
- rod
- spiral
- spiral tooth
- rod body
- 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
Links
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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Landscapes
- 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
The invention discloses a metal spicule and relates to an instrument used in an orthopedic operation. A threaded part is arranged on the front portion of a cylindrical rod body of the metal spicule, and a planar clamping part is arranged on the outer circumference of the rear end of the rod body; the threaded part with the cylindrical outer circumference being the same as that of the rod body is arranged on the front portion of the rod body, the outer diameter of the root of each thread on the threaded part becomes larger gradually from front to back, and the height of each thread becomes smaller gradually from front to back; a hydroxylapatite coating is arranged on the outer circumference of the threaded part; radial blind holes which extend towards the central axis of the rod body are formed in the portions, between the threads on the upper portion of the threaded part, of the spiral circumferential surfaces of the roots; an antibiotics coating is arranged on the outer circumference of the middle of the rod body. The metal spicule is high in holding force, capable of preventing inflammation of the skin of a human body, and suitable for osteoporotic patients or the metaphysis.
Description
Technical field
The present invention relates to a kind of equipment of bone surgery.
Background technology
Existing bone surgery with the construction features of metal bone needle be: on metal bone needle, the front portion of the cylindrical body of rod connects the threaded portion with the conical periphery strengthened gradually from front to back, to screw in the bone of patient; The rearward end periphery of the body of rod has the Access Division of a plane formula, to use box spanner spire, carries out the screw-in of spicule or exits.A hang-up of puzzlement bone surgery is the loosening problem of spicule after implant into body, finally causes the failure of internal fixtion.Due to the single-screw tooth design that threaded portion adopts height of thread constant, the periphery of threaded portion is tapered, not enough for hold when osteoporotic patient or metaphysis, postoperative easily loosening.Moreover traditional extenal fixation spicule material is titanium alloy (Ti-6Al-4V) or rustless steel (316L), wherein stainless biocompatibility is more poor than titanium alloy, and the probability therefore loosened also comes high than titanium alloy.In addition, the contact position, periphery in the middle part of human body skin and the body of rod is easily inflamed.
Summary of the invention
It is good and can avoid the metal bone needle that human body skin is inflamed that the present invention aims to provide a kind of hold.
Technical scheme of the present invention is: a kind of metal bone needle, and threaded portion is established in the front portion of the cylindrical body of rod, and the rearward end periphery of the body of rod has the Access Division of a plane formula; The front portion of the body of rod is for having the threaded portion of same cylindrical periphery, and on this threaded portion, the external diameter of spiral tooth root strengthens from front to back gradually, and the height of spiral tooth reduces from front to back gradually; The periphery of threaded portion is provided with hydroxyapatite coating layer; Root spiral side face between the anterior spiral tooth in threaded portion has the radial blind holes extended to body of rod axis; Periphery in the middle part of the body of rod is provided with antibiotic coating.
By making body of rod front threads portion and other parts of the body of rod have same cylindrical periphery, and the external diameter of spiral tooth root on threaded portion is strengthened from front to back gradually, the height of spiral tooth reduces from front to back gradually, adds intensity and the hold of threaded portion; Can effectively prevent spicule from rupturing, the spicule that this entire body diameter is constant simultaneously can make the specification of multiple different spiral tooth root tapering, facilitates in operation technique and selects.Hydroxyapatite (HA) is the bioceramic material with bone conduction effect, pass through plasma spraying technology, be coated on metal bone needle, improve the stability that later stage spicule is fixing, pass through clinical experiment, that compares spicule is screwed into moment and the back-out moment of spicule after knitting, discovery moment of back-outing obviously increases, this is that spicule owing to having this coating has better synosteosis (Osteointegration), so just can avoid the loosening of fracture healing process Zhong Ding road, the situation of fracture end displacement that constant intensity declines and causes occurs.The radial blind holes extended to body of rod axis that root spiral side face between the anterior spiral tooth in threaded portion is offered, can facilitate bone open into, increase hold.In the middle part of the body of rod, the antibiotic coating of periphery can prevent human body skin to be inflamed.
Implement in structure preferred: described threaded portion adopts the twin-feed spiral tooth that top outer diameter is identical, and the external diameter of each spiral tooth root strengthens from front to back gradually, and the height of each spiral tooth reduces from front to back gradually; Root spiral side face between anterior two the spiral teeth in this threaded portion has the radial blind holes extended to body of rod axis.
Threaded portion adopts the design of twin-feed spiral tooth, and that can accelerate spicule is screwed into speed, shortens operating time.
Particularly: described radial blind holes has three, they from front to back in the front portion of threaded portion arrange and become 120 ° to be uniformly distributed relative to described body of rod axis in compartment of terrain.
Three radial blind holes become 120 ° to be uniformly distributed, and while reaching increase hold, can keep again the intensity of threaded portion preferably, prevent threaded portion from rupturing by the increase of radial blind holes quantity.
Metal bone needle of the present invention, by adopting above-mentioned structure, threaded portion external diameter remains unchanged and the helicoid external diameter of spiral tooth root increases from front to back gradually, the intensity of threaded portion is continued to increase from front to back, during use, front end, threaded portion can embed bone in ground, heavy in section, and the nail on bone outwards extrudes by the helicoid of rear portion, threaded portion spiral tooth root as much as possible, keep firm support, the hydroxyapatite coating layer of periphery, threaded portion directly and bone contact, loosening of fracture healing process Zhong Ding road can be avoided, the situation of the fracture end displacement that constant intensity declines and causes occurs.So metal bone needle of the present invention can be gained in strength and hold effectively, being connected firmly of it and bone, can not loosen.It has the function preventing human body skin to be inflamed; Be applicable to osteoporotic patient or metaphysis.It is convenient to be screwed into fast in operation, again by making the product of plurality of specifications spiral tooth root tapering, for doctor to provide in operation selectivity flexibly.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of a metal bone needle of the present invention embodiment.
Fig. 2 is the cross-sectional view of Fig. 1 embodiment.
Fig. 3 is the close-up schematic view in A portion in Fig. 2.
Fig. 4 be in Fig. 3 B-B to cross-sectional view.
Fig. 5 be in Fig. 3 C-C to cross-sectional view.
Fig. 6 be in Fig. 3 D-D to cross-sectional view.
Fig. 7 is the occupation mode schematic diagram of Fig. 1 embodiment.
Detailed description of the invention
One, embodiment one
The Facad structure of metal bone needle of the present invention, as shown in Figure 1.The material of this metal bone needle is titanium alloy (Ti-6Al-4V) or rustless steel (316L).On this metal bone needle, the front portion of the cylindrical body of rod 1 is for having the threaded portion 2 of same cylindrical periphery, and the periphery in the middle part of the body of rod 1 is provided with antibiotic coating 11; The rearward end periphery of the body of rod 1 has the Access Division 3 of a plane formula.The twin-feed spiral tooth design that threaded portion 2 adopts top 21 external diameter identical, and the external diameter of each spiral tooth root strengthens from front to back gradually, and the height of each spiral tooth reduces from front to back gradually.The periphery of threaded portion 2 is coated with hydroxyapatite (HA) coating by plasma spray.Between anterior two the spiral teeth in threaded portion 2, adjacent root spiral side face 22 has the radial blind holes 4,5,6 that three axis to the body of rod 1 extend, and please refer to Fig. 2 and Fig. 3.These three radial blind holes 4,5,6 from front to back in the front portion of threaded portion 2 arrange and become 120 ° to be uniformly distributed, referring to Fig. 4, Fig. 5 and Fig. 6 relative to the axis of the body of rod 1 in compartment of terrain.
The occupation mode of the present embodiment, as shown in Figure 7.Two metal bone needle compartment of terrains screw in the position of more than bone 8 fracture respectively through the skin 9 of human body, the rear portion of these two metal bone needle bodies of rod 1 is separately fixed at the top of external fixer 7, and the compartment of terrain, threaded portion 2 of these two metal bone needle front ends is locked on bone 8; Another two metal bone needle compartment of terrains screw in the position of below bone 8 fracture respectively through the skin 9 of human body, the rear portion of these two metal bone needle bodies of rod 1 is separately fixed at the bottom of external fixer 7, and the compartment of terrain, threaded portion 2 of these two metal bone needle front ends is locked on bone 8.The hydroxyapatite coating layer of this periphery, four metal bone needle threaded portions 2 directly contacts with bone 8, and the situation of the fracture end displacement that loosening, the constant intensity in fracture healing process Zhong Ding road can be avoided to decline and cause occurs.In the middle part of these four metal bone needle bodies of rod 1, the antibiotic coating 11 of periphery can contact with the skin 9 of human body, prevents human body skin to be inflamed.
The above, be only present pre-ferred embodiments, do not limit scope of the invention process with this, and equivalence change and the modification done according to technical scheme of the present invention and description, all should belong to the scope that the present invention is contained.
Claims (3)
1. a metal bone needle, threaded portion is established in the front portion of the cylindrical body of rod, and the rearward end periphery of the body of rod has the Access Division of a plane formula; It is characterized in that: the front portion of the body of rod is for having the threaded portion of same cylindrical periphery, and on this threaded portion, the external diameter of spiral tooth root strengthens from front to back gradually, and the height of spiral tooth reduces from front to back gradually; The periphery of threaded portion is provided with hydroxyapatite coating layer; Root spiral side face between the anterior spiral tooth in threaded portion has the radial blind holes extended to body of rod axis; Periphery in the middle part of the body of rod is provided with antibiotic coating.
2. a kind of metal bone needle according to claim 1, it is characterized in that: described threaded portion adopts the twin-feed spiral tooth that top outer diameter is identical, and the external diameter of each spiral tooth root strengthens from front to back gradually, the height of each spiral tooth reduces from front to back gradually; Between anterior two the spiral teeth in this threaded portion, adjacent root spiral side face has the radial blind holes extended to body of rod axis.
3. a kind of metal bone needle according to claim 1 and 2, is characterized in that: described radial blind holes has three, and they from front to back in the front portion of threaded portion arrange and become 120 ° to be uniformly distributed relative to described body of rod axis in compartment of terrain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510226102.XA CN104970876A (en) | 2015-05-06 | 2015-05-06 | Metal spicule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510226102.XA CN104970876A (en) | 2015-05-06 | 2015-05-06 | Metal spicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104970876A true CN104970876A (en) | 2015-10-14 |
Family
ID=54268211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510226102.XA Pending CN104970876A (en) | 2015-05-06 | 2015-05-06 | Metal spicule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104970876A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510818A (en) * | 2016-11-22 | 2017-03-22 | 中国人民解放军第四军医大学 | Component structure for improving percutaneous sealing effect of orthopedic external fixation frame |
| 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 |
| CN109567917A (en) * | 2018-12-28 | 2019-04-05 | 浙江康慈医疗科技有限公司 | A kind of blunt nosed metal bone needle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0554915B1 (en) * | 1989-10-26 | 1996-12-11 | Giuseppe Vrespa | Tapper for forming internal threads in a precision frustoconical hole in bones |
| CN201551386U (en) * | 2009-11-26 | 2010-08-18 | 中国科学院上海硅酸盐研究所 | antimicrobial bone fixing screw |
| CN201750902U (en) * | 2010-07-05 | 2011-02-23 | 苏州市百得医疗器械有限公司 | Hydroxyapatite bone-knitting screw |
| CN102905636A (en) * | 2010-05-19 | 2013-01-30 | 德普伊斯派尔公司 | Bone anchors |
| CN103040517A (en) * | 2012-12-27 | 2013-04-17 | 苏州欣荣博尔特医疗器械有限公司 | Simple-pendulum spinal screw |
| CN204274607U (en) * | 2014-11-13 | 2015-04-22 | 创生医疗器械（中国）有限公司 | A kind of metal bone needle |
| CN204698670U (en) * | 2015-05-06 | 2015-10-14 | 宁德市闽东医院 | A kind of metal bone needle |
-
2015
- 2015-05-06 CN CN201510226102.XA patent/CN104970876A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0554915B1 (en) * | 1989-10-26 | 1996-12-11 | Giuseppe Vrespa | Tapper for forming internal threads in a precision frustoconical hole in bones |
| CN201551386U (en) * | 2009-11-26 | 2010-08-18 | 中国科学院上海硅酸盐研究所 | antimicrobial bone fixing screw |
| CN102905636A (en) * | 2010-05-19 | 2013-01-30 | 德普伊斯派尔公司 | Bone anchors |
| CN201750902U (en) * | 2010-07-05 | 2011-02-23 | 苏州市百得医疗器械有限公司 | Hydroxyapatite bone-knitting screw |
| CN103040517A (en) * | 2012-12-27 | 2013-04-17 | 苏州欣荣博尔特医疗器械有限公司 | Simple-pendulum spinal screw |
| CN204274607U (en) * | 2014-11-13 | 2015-04-22 | 创生医疗器械（中国）有限公司 | A kind of metal bone needle |
| CN204698670U (en) * | 2015-05-06 | 2015-10-14 | 宁德市闽东医院 | A kind of metal bone needle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510818A (en) * | 2016-11-22 | 2017-03-22 | 中国人民解放军第四军医大学 | Component structure for improving percutaneous sealing effect of orthopedic external fixation frame |
| 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 |
| CN109567917A (en) * | 2018-12-28 | 2019-04-05 | 浙江康慈医疗科技有限公司 | A kind of blunt nosed metal bone needle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220079643A1 (en) | Device for variable fixation of bone fragments | |
| CA2739763C (en) | Implant for bone fixation | |
| US10682169B2 (en) | Bone screw | |
| US20120237898A1 (en) | Multi-stage dental implant | |
| US20130325010A1 (en) | Bone fastener and method of manufacturing the same | |
| CZ28781U1 (en) | Dental implant for jawbone with coronal thread and apical self-tapping thread | |
| EP4119078A1 (en) | Screw assembly for bone fixation, and bone fixation device | |
| CN104970876A (en) | Metal spicule | |
| CN103550005A (en) | One-part form artificial dental implant and implanting method thereof | |
| JP2010505564A (en) | Implant | |
| US20170105776A1 (en) | Method for Producing an Osteosynthetic Implant, and Bone Nail | |
| CN204698670U (en) | A kind of metal bone needle | |
| CN106880396A (en) | A kind of Fracture internal fixaiion screw of degradable absorption | |
| CN202821672U (en) | Orthodontics micro-type self-tapping type anchorage nail | |
| CN112773573B (en) | Inner support prosthesis for femoral head | |
| WO2009128074A1 (en) | Endosseous implant with interior and exterior threads | |
| CN211560315U (en) | Intramedullary pressurization fixing kirschner wire | |
| CN201564626U (en) | Instant-repair dental implant | |
| US12239537B2 (en) | Bone transplant | |
| CN215458521U (en) | Fixing device | |
| CN208756138U (en) | Square halberd screw | |
| CN203576669U (en) | One-segment artificial tooth implant | |
| CN219070596U (en) | A New Type of Medical Hollow Nail | |
| CN213217548U (en) | Interface screw | |
| EP3897448A1 (en) | Dental implant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |
|
| RJ01 | Rejection of invention patent application after publication |