CN102973315A - Half-thread spongy bone hollow screw - Google Patents
Half-thread spongy bone hollow screw Download PDFInfo
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- CN102973315A CN102973315A CN2012105153377A CN201210515337A CN102973315A CN 102973315 A CN102973315 A CN 102973315A CN 2012105153377 A CN2012105153377 A CN 2012105153377A CN 201210515337 A CN201210515337 A CN 201210515337A CN 102973315 A CN102973315 A CN 102973315A
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- thread
- hollow screw
- spongy bone
- nail
- tail
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Abstract
The invention relates to a half-thread spongy bone hollow screw which comprises a nail head (1), a nail rod (2) and a nail tail (3). The hollow screw has a total length of 35 to 140mm; the nail rod (2) is a titanium alloy nail body; a through hole with a diameter of 2.2mm is formed in the nail rod (2); and the nail rod (2) comprises a threaded section at the front end and an unthreaded section at the tail end. The half-thread spongy bone hollow screw disclosed by the invention has a simple structure and is simple and convenient to use.
Description
Technical field
The present invention relates to a kind of orthopedic medical device, particularly a kind of half-thread spongy bone hollow screw.
Background technology
Along with the development of economic construction and auto industry, the sickness rate of high-energy damage increases increasingly.For the patient of high-octane traumatic pelvic ring injuries, often to damage heavierly, traumatic condition is complicated, concerning doctor and patient, treats very thorny.In in the past 20 years, development along with anatomy and image technology, micro-wound percutaneous hollow screw technique for fixing is little with wound, amount of bleeding is few, the advantage such as soft tissue injury is light, infection rate after abortion operation is low, post-operative recovery is fast and the ectopic ossification incidence rate is low has been widely used in the every field of Wicresoft's orthopaedics.But because fracture and the damage of different anatomic, its requirement to hollow screw is also had nothing in common with each other.Especially for the fracture of pelvis acetabular anterior column, because its unique anatomic characteristic: curvature is excessive, so that the bone of hollow screw " escape way " is very narrow.In clinical, hollow screw commonly used is difficult to satisfy clinical needs at present.
Summary of the invention
The object of the invention is to overcome the deficiency of traditional hollow screw, when using micro-wound percutaneous pulling force hollow screw treatment acetabular anterior column fracture, for clinical position provides a kind of new half-thread spongy bone hollow screw.
Half-thread spongy bone hollow screw ailhead of the present invention, nail bar and nail tail, the total length of hollow screw is 35-140mm; The nail bar is titanium alloy hollow nail bar, in diameter is arranged is the through hole of 2.2mm, comprise the thread segment of front end and tail end without thread segment, be 3.6mm without the thread segment diameter, the Major Diam of thread segment is 5.5mm, and the screw thread path is 3.5mm, pitch is 1.75mm, and spiral shell is thick to be 0.1mm, and tooth form operating angle α is 5
0, tooth form inoperative angle β is 25
0, the rear end chamfer radius is 0.3mm at the bottom of the thread, the Leading end chamfer radius is 0.8mm at the bottom of the thread.
Wherein, ailhead is self tapping three cutting edges; The nail tail is that interior six rib matrix bulb diameters are 7mm, and length is 4.2mm.
Half-thread spongy bone hollow screw of the present invention can pass through narrow " escape way " of acetabular anterior column bone smoothly, for the acetabular anterior column fracture provides better hold and stability, and simple in structure, easy to use.
Description of drawings
Fig. 1 is half-thread spongy bone hollow screw sketch map of the present invention;
Fig. 2 is the thread segment screw thread sketch map on the hollow screw of the present invention.
The specific embodiment
In order more at large to understand technical scheme of the present invention, below in conjunction with accompanying drawing the present invention is made concrete elaboration.
As shown in Figure 1, 2, half-thread spongy bone hollow screw of the present invention comprises ailhead 1, nail bar 2 and nail tail 3, and the length of half-thread spongy bone hollow screw is 35-140mm.Nail bar 2 be titanium alloy hollow nail bar, in diameter is arranged is the through hole of 2.2mm, follow closely bar 2 comprise front end length be the thread segment of 32mm and tail end without thread segment, be 3.6mm without the thread segment diameter.The Major Diam of thread segment is 5.5mm, and the screw thread path is 3.5mm, and pitch is 1.75mm, and spiral shell is thick to be 0.1mm, and tooth form operating angle α is 5
0, tooth form inoperative angle β is 25
0, the rear end chamfer radius is 0.3mm at the bottom of the thread, the Leading end chamfer radius is 0.8mm at the bottom of the thread.Ailhead 1 is self tapping three cutting edges, is conducive to self tapping in bone.Nail tail 3 diameters are 7mm, and length is 4.2mm, and nail tail 3 is interior six rib matrix bulbs, are conducive to twist screw with six rib screwdrivers.
Claims (3)
1. half-thread spongy bone hollow screw, it comprises ailhead (1), nail bar (2) and follows closely tail (3) that it is characterized in that: the total length of described hollow screw is 35-140mm; Nail bar (2) is titanium alloy hollow nail bar, in diameter is arranged is the through hole of 2.2mm, comprise the thread segment of front end and tail end without thread segment, be 3.6mm without the thread segment diameter, the Major Diam of thread segment is 5.5mm, and the screw thread path is 3.5mm, and pitch is 1.75mm, spiral shell is thick to be 0.1mm, and tooth form operating angle α is 5
0, tooth form inoperative angle β is 25
0, the rear end chamfer radius is 0.3mm at the bottom of the thread, the Leading end chamfer radius is 0.8mm at the bottom of the thread.
2. half-thread spongy bone hollow screw as claimed in claim 1, it is characterized in that: ailhead (1) is self tapping three cutting edges.
3. half-thread spongy bone hollow screw as claimed in claim 1 or 2 is characterized in that: nail tail (3) is interior six rib matrix bulbs, and diameter is 7mm, and length is 4.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105153377A CN102973315A (en) | 2012-12-05 | 2012-12-05 | Half-thread spongy bone hollow screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105153377A CN102973315A (en) | 2012-12-05 | 2012-12-05 | Half-thread spongy bone hollow screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102973315A true CN102973315A (en) | 2013-03-20 |
Family
ID=47847861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105153377A Pending CN102973315A (en) | 2012-12-05 | 2012-12-05 | Half-thread spongy bone hollow screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102973315A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104173095A (en) * | 2014-09-15 | 2014-12-03 | 广东泓志生物科技有限公司 | Interference screw for department of orthopaedics |
| CN105496528A (en) * | 2016-01-16 | 2016-04-20 | 北京大学深圳医院 | Percutaneous breakable cannulated lag screw and assembly for bone connection |
| CN112826580A (en) * | 2020-12-31 | 2021-05-25 | 刘华水 | Ilium nail |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1899227A (en) * | 2006-07-20 | 2007-01-24 | 中国人民解放军第四军医大学 | Expanding type spongy bone hollow screw |
| CN201019824Y (en) * | 2006-12-05 | 2008-02-13 | 唐佩福 | Special inner fixer for preventing femur and cervical vertebra disconnecting after fracture and femoral head ischemic necrosis |
| CN101150996A (en) * | 2005-03-29 | 2008-03-26 | 桑德尔·罗斯 | The canulated titanium implant for correcting flat feet in children |
| US20100057086A1 (en) * | 2008-08-29 | 2010-03-04 | Zimmer, Inc. | Anodized locking plate components |
| CN203208106U (en) * | 2012-12-05 | 2013-09-25 | 唐佩福 | Half-thread spongy bone hollow screw |
-
2012
- 2012-12-05 CN CN2012105153377A patent/CN102973315A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150996A (en) * | 2005-03-29 | 2008-03-26 | 桑德尔·罗斯 | The canulated titanium implant for correcting flat feet in children |
| CN1899227A (en) * | 2006-07-20 | 2007-01-24 | 中国人民解放军第四军医大学 | Expanding type spongy bone hollow screw |
| CN201019824Y (en) * | 2006-12-05 | 2008-02-13 | 唐佩福 | Special inner fixer for preventing femur and cervical vertebra disconnecting after fracture and femoral head ischemic necrosis |
| US20100057086A1 (en) * | 2008-08-29 | 2010-03-04 | Zimmer, Inc. | Anodized locking plate components |
| CN203208106U (en) * | 2012-12-05 | 2013-09-25 | 唐佩福 | Half-thread spongy bone hollow screw |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104173095A (en) * | 2014-09-15 | 2014-12-03 | 广东泓志生物科技有限公司 | Interference screw for department of orthopaedics |
| CN105496528A (en) * | 2016-01-16 | 2016-04-20 | 北京大学深圳医院 | Percutaneous breakable cannulated lag screw and assembly for bone connection |
| CN112826580A (en) * | 2020-12-31 | 2021-05-25 | 刘华水 | Ilium nail |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |