CN105596076A - Micro-motion locking screw - Google Patents
Micro-motion locking screw Download PDFInfo
- Publication number
- CN105596076A CN105596076A CN201610109919.3A CN201610109919A CN105596076A CN 105596076 A CN105596076 A CN 105596076A CN 201610109919 A CN201610109919 A CN 201610109919A CN 105596076 A CN105596076 A CN 105596076A
- Authority
- CN
- China
- Prior art keywords
- screw
- thread
- bone
- swivel nut
- fine motion
- 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
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 57
- 238000010079 rubber tapping Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001356 surgical procedure Methods 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000000638 stimulation Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004626 polylactic acid Substances 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 241000282461 Canis lupus Species 0.000 description 1
- 208000005214 Poroma Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000001013 eccrine acrospiroma Diseases 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
-
- 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
- A61B17/866—Material or manufacture
-
- 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
- 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
- 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 relates to a micro-motion locking screw which comprises a screw body made of a non-biodegradable material; the screw body is fixedly provided with a screw sleeve made of a degradable material; the screw body is composed of a locking thread, a connection rod, a screw bone thread, screw returning self tapping slots and screw feeding self-tapping slots which are sequentially connected; the screw sleeve is provided with the screw bone thread. According to the micro-motion locking screw, pressurizing operation can be conducted in surgery, the screw sleeve can be degraded within 1-15 months, a bone close to the side of a locking bone connection plate can conduct micro motion after the screw sleeve is degraded, and thus growth of the bone is promoted under stimulus of force.
Description
Technical field
The present invention relates to fractures recovery technology field, particularly a kind of fine motion lock screw.
Background technology
When locking bone fracture plate and lock screw are carried out fracture fixation, locking bone fracture plate, lock screw, boneBetween folding, form strong fixing. And Wolf law shows, the stimulation of power is conducive to the growth of bone. Therefore,Slight bending away from a side of locking bone fracture plate due to screw, bone can be subject to the stimulation of power, is conducive toThe recovery of fracture. And in the side near locking bone fracture plate, because interior fixing rigidity is stronger, boneFeel bad the stimulation of power, be unfavorable for the recovery of fracture. The Chinese patent of CN202458652U discloses onePlant dynamic lock screw, comprise taper thread nail axle and can insert taper thread the threaded sleeve of following closely axle. UseAfter this dynamic lock screw, can make the bone of locking bone fracture plate side also be subject to the stimulation of power, promote bone circleThe poroma of Zhou Fangxiang generates. But, due to the distortion of taper thread nail axle, can not in art when clinical useFracture site is pressurizeed. In addition, being linked and packed of taper thread nail axle and threaded sleeve is more difficult,Connection reliability is poor, and in clinical use, taper thread nail axle easily ruptures.
Summary of the invention
The object of the invention is to overcome the defect that prior art exists, a kind of simple in structure, company is providedConnect the fine motion lock screw that reliability is strong.
The technical scheme that realizes the object of the invention is: a kind of fine motion lock screw, comprises by non-degradableThe screw body that material is manufactured; On described screw body, be fixed with the swivel nut of being manufactured by degradation material;Described screw body by the locking screw thread being connected successively, connecting rod, screw bone thread, move back nail self tapping grooveWith enter to follow closely self tapping groove composition; On described swivel nut, offer swivel nut bone thread.
Described in technique scheme, to be less than or equal to the screw thread at screw bone thread place little for the diameter d 1 at connecting rod placeFootpath d2.
Described in technique scheme, the pitch of swivel nut bone thread equals screw bone thread on screw bodyPitch.
Described in technique scheme, the Major Diam d5 of swivel nut bone thread is less than or equal to the spiral shell on screw bodyThe Major Diam d4 of nail bone thread.
Described in technique scheme, to equal the screw thread of screw bone thread little for the screw thread path d3 of swivel nut bone threadFootpath.
Described in technique scheme, to be greater than the screw thread of screw bone thread little for the screw thread path of swivel nut bone threadFootpath, and described swivel nut is provided with self tapping groove.
Described in technique scheme, screw bone thread is cortex bone screw thread.
Adopt after technique scheme, the present invention has following positive effect:
Fine motion lock screw of the present invention, can carry out pressurized operation in art, and postoperative swivel nut can be 1～15, after degraded, can there is fine motion near the bone of locking bone fracture plate side in degraded in individual month, thereby in the stimulation of powerLower its growth of promotion.
Brief description of the drawings
For content of the present invention is more easily expressly understood, below according to specific embodiment knotClose accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is perspective view of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structural representation of embodiments of the invention 1;
Fig. 4 is the other direction structural representation of embodiments of the invention 1;
Fig. 5 is the structural representation of embodiments of the invention 2;
Fig. 6 is the left view of Fig. 5;
Attached number in the figure is: screw body 1, and locking screw thread 11, connecting rod 12, screw bone thread 13,Move back nail self tapping groove 14, enter to follow closely self tapping groove 15, swivel nut 2, swivel nut bone thread 21, self tapping groove 22.
Detailed description of the invention
See Fig. 1, the present invention includes the screw body 1 of being manufactured by non-degradable material; On screw body 1Be fixed with the swivel nut 2 of being manufactured by degradation material; Screw body 1 by the locking screw thread 11 being connected successively,Connecting rod 12, screw bone thread 13, move back nail self tapping groove 14 and enter to follow closely self tapping groove 15 and form; Swivel nut 2On offer swivel nut bone thread 21.
The diameter d 1 at connecting rod 12 places is less than or equal to the screw thread path d2 at screw bone thread 13 places.
The pitch of swivel nut bone thread 21 equals the pitch of the screw bone thread 13 on screw body 1.
The Major Diam d5 of swivel nut bone thread 21 is less than or equal to the screw bone thread 13 on screw body 1Major Diam d4.
The screw thread path d3 of swivel nut bone thread 21 equals the screw thread path of screw bone thread 13.
The screw thread path of swivel nut bone thread 21 is greater than the screw thread path of screw bone thread 13, and swivel nut 2Be provided with self tapping groove 22.
Screw bone thread 13 is cortex bone screw thread.
Operation principle of the present invention is: use fine motion lock screw of the present invention, in art, can pressurizeOperation, postoperative swivel nut 2 can be degraded in 1～15 month, the bone of close locking bone fracture plate side after degradedCan there is fine motion, thereby promote its growth under the stimulation of power.
(embodiment 1)
See Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6, the fine motion lock screw of a diameter 5.5*50, instituteState screw body 1 for stainless steel material manufacture, described swivel nut 2 is manufactured by poly-lactic acid material, described spiral shellCover 2 is fixed on screw body 1 through injection moulding direct forming. Described screw body is by the lock being connected successivelyDetermine screw thread 11, connecting rod 12, move back nail self tapping groove 14, bone thread 13, enter to follow closely self tapping groove 15 and form.Described bone thread 13 is cortex bone screw thread. Diameter d 1 at 1 connecting rod 12 places etc. on described screw bodyScrew thread path d2 in bone thread 13 is 4.0, and the Major Diam d4 of described bone thread 13 is 5.0,Pitch is 1.3. The screw thread path d3 of described swivel nut 2 is 4.5, and Major Diam d5 equals described muricesThe Major Diam d4 of line 13, swivel nut 2 outer surfaces are provided with self tapping groove 22.
(embodiment 2)
See Fig. 3, the fine motion lock screw of a diameter 5.5*50, described screw body 1 is titanium alloy materialMaterial is manufactured, and described swivel nut 2 is poly-lactic acid material manufacture, and described swivel nut 2 is fixed through injection moulding direct formingOn screw body 1. Described screw body by the locking screw thread 11 being connected successively, connecting rod 12, move backNail self tapping groove 14, bone thread 13, enter to follow closely self tapping groove 15 and form. Described bone thread 13 is cortex muricesLine. On described screw body, the diameter d 1 at 1 connecting rod 12 places is 3.5, the spiral shell of described bone thread 13The large footpath d4 of line is 5.0, and screw thread path d2 is 4.0, and pitch is 1.3. The screw thread of described swivel nut 2 is littleFootpath d3 equals the screw thread path d2 of described bone thread 13, and Major Diam d5 equals described bone thread 13Major Diam d4, swivel nut 2 outer surfaces are without self tapping groove.
Above-described specific embodiment, carries out object of the present invention, technical scheme and beneficial effectFurther description, institute it should be understood that the foregoing is only specific embodiments of the invention and, be not limited to the present invention, within the spirit and principles in the present invention all, any repairing of doingProtection scope of the present invention changes, be equal to replacement, improvement etc., within all should be included in.
Claims (7)
1. a fine motion lock screw, comprises the screw body (1) of being manufactured by non-degradable material; ItsBe characterised in that: on described screw body (1), be fixed with the swivel nut (2) of being manufactured by degradation material; InstituteState screw body (1) by the locking screw thread being connected successively (11), connecting rod (12), screw bone thread(13), move back nail self tapping groove (14) and enter to follow closely self tapping groove (15) composition; Described swivel nut is opened on (2)Be provided with swivel nut bone thread (21).
2. fine motion lock screw according to claim 1, is characterized in that: described connecting rod (12)The diameter d 1 at place is less than or equal to the screw thread path d2 that screw bone thread (13) is located.
3. fine motion lock screw according to claim 2, is characterized in that: described swivel nut muricesThe pitch of line (21) equals the pitch of the screw bone thread (13) on screw body (1).
4. fine motion lock screw according to claim 3, is characterized in that: described swivel nut muricesThe Major Diam d5 of line (21) is less than or equal to screw bone thread (13) on screw body (1)Major Diam d4.
5. fine motion lock screw according to claim 4, is characterized in that: described swivel nut muricesThe screw thread path d3 of line (21) equals the screw thread path of screw bone thread (13).
6. fine motion lock screw according to claim 4, is characterized in that: described swivel nut muricesThe screw thread path of line (21) is greater than the screw thread path of screw bone thread (13), and described swivel nut (2)Be provided with self tapping groove (22).
7. according to the fine motion lock screw described in claim 5 or 6, it is characterized in that: described screwBone thread (13) is cortex bone screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109919.3A CN105596076A (en) | 2016-02-26 | 2016-02-26 | Micro-motion locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610109919.3A CN105596076A (en) | 2016-02-26 | 2016-02-26 | Micro-motion locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105596076A true CN105596076A (en) | 2016-05-25 |
Family
ID=55976822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610109919.3A Pending CN105596076A (en) | 2016-02-26 | 2016-02-26 | Micro-motion locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105596076A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618712A (en) * | 2016-12-29 | 2017-05-10 | 大博医疗科技股份有限公司 | Elastic bone screw |
| CN106691629A (en) * | 2017-01-20 | 2017-05-24 | 运怡（北京）医疗器械有限公司 | Strengthen interface nail |
| CN108113743A (en) * | 2018-01-03 | 2018-06-05 | 北京爱康宜诚医疗器材有限公司 | Bone screws |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5098434A (en) * | 1990-11-28 | 1992-03-24 | Boehringer Mannheim Corporation | Porous coated bone screw |
| US6506192B1 (en) * | 1998-10-26 | 2003-01-14 | Musculoskeletal Transplant Foundation | Allograft bone fixation screw |
| CN101426444A (en) * | 2006-03-01 | 2009-05-06 | 华沙整形外科股份有限公司 | Bone anchors and methods of forming the same |
| US20100249850A1 (en) * | 2009-03-24 | 2010-09-30 | Stabiliz Orthopedics, LLC | Orthopedic Fixation Device with Bioresorbable Layer |
| CN102036612A (en) * | 2008-03-28 | 2011-04-27 | 骨科技术公司 | Bone Anchors for Orthopedic Applications |
| CN104825220A (en) * | 2014-02-12 | 2015-08-12 | 爱派司生技股份有限公司 | Sleeve type bone screw |
| CN104887305A (en) * | 2015-06-29 | 2015-09-09 | 河北瑞诺医疗器械股份有限公司 | Bone screw |
| CN104905863A (en) * | 2014-03-10 | 2015-09-16 | 创辉医疗器械江苏有限公司 | Composite screw |
| CN205514863U (en) * | 2016-02-26 | 2016-08-31 | 创辉医疗器械江苏有限公司 | Fine motion locking screw |
-
2016
- 2016-02-26 CN CN201610109919.3A patent/CN105596076A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5098434A (en) * | 1990-11-28 | 1992-03-24 | Boehringer Mannheim Corporation | Porous coated bone screw |
| US6506192B1 (en) * | 1998-10-26 | 2003-01-14 | Musculoskeletal Transplant Foundation | Allograft bone fixation screw |
| CN101426444A (en) * | 2006-03-01 | 2009-05-06 | 华沙整形外科股份有限公司 | Bone anchors and methods of forming the same |
| CN102036612A (en) * | 2008-03-28 | 2011-04-27 | 骨科技术公司 | Bone Anchors for Orthopedic Applications |
| US20100249850A1 (en) * | 2009-03-24 | 2010-09-30 | Stabiliz Orthopedics, LLC | Orthopedic Fixation Device with Bioresorbable Layer |
| CN104825220A (en) * | 2014-02-12 | 2015-08-12 | 爱派司生技股份有限公司 | Sleeve type bone screw |
| CN104905863A (en) * | 2014-03-10 | 2015-09-16 | 创辉医疗器械江苏有限公司 | Composite screw |
| CN104887305A (en) * | 2015-06-29 | 2015-09-09 | 河北瑞诺医疗器械股份有限公司 | Bone screw |
| CN205514863U (en) * | 2016-02-26 | 2016-08-31 | 创辉医疗器械江苏有限公司 | Fine motion locking screw |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618712A (en) * | 2016-12-29 | 2017-05-10 | 大博医疗科技股份有限公司 | Elastic bone screw |
| CN106618712B (en) * | 2016-12-29 | 2019-03-15 | 大博医疗科技股份有限公司 | A kind of elasticity bone screws |
| CN106691629A (en) * | 2017-01-20 | 2017-05-24 | 运怡（北京）医疗器械有限公司 | Strengthen interface nail |
| CN108113743A (en) * | 2018-01-03 | 2018-06-05 | 北京爱康宜诚医疗器材有限公司 | Bone screws |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20160525 |