CN1899227A - Expanding type spongy bone hollow screw - Google Patents
Expanding type spongy bone hollow screw Download PDFInfo
- Publication number
- CN1899227A CN1899227A CN 200610043183 CN200610043183A CN1899227A CN 1899227 A CN1899227 A CN 1899227A CN 200610043183 CN200610043183 CN 200610043183 CN 200610043183 A CN200610043183 A CN 200610043183A CN 1899227 A CN1899227 A CN 1899227A
- Authority
- CN
- China
- Prior art keywords
- duct
- screw thread
- male screw
- rear end
- point
- 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
Landscapes
- Surgical Instruments (AREA)
Abstract
The expanding bolt for use in spongy bone includes one outer screw a one inner screw. The outer screw in integral structure has one tip end, one outer thread section, one spherical end and one inside hole including one front section of small diameter and one back section with inner threads. The front part of the outer screw is cut to form two or four expansion slots. The inner screw matched with the inner treads of the outer screw has one conic tip, threads and socket head for screwing in. There is also one tip steel pin matching the front section of the outer screw. The present invention is for inner fixing of fracture and has high stability and reliability.
Description
Technical field
The invention belongs to medical apparatus, particularly a kind of new medical expanding type spongy bone hollow screw.
Background technology
Fracture of femoral neck, slipped femoral epiphysis, base of nebk ot femur fracture, fracture of the femoral condyle, fracture of the tibial plateau all belong to spongy bone position fracture, and Therapeutic Method mainly is by operation, the open reduction internal fixation of fracturing at present.In addition, the sacroiliac joint damage that causes owing to multiple reason, acetabular bone, fracture of pelvis also all are the internal fixation treatment that need undergo surgery usually.Internal fixation device mainly adopts fixedly fracture site of cancellous bone screw.But to lift constant intensity not enough because at present clinical cancellous bone screw commonly used exists, and often causes the postoperative fracture displacement, and screw loosening is deviate from, final fixing failure.Especially for clinical common old fracture of femoral neck, because there is osteoporosis in most of patients, common cancellous bone screw is difficult to reach anti-rotation, and therefore the purpose that antiskid is moving internal fixation screw often occurs and become flexible the phenomenon of deviating from.
Summary of the invention
Defective and deficiency at above-mentioned prior art exists the invention provides a kind of expansion type hollow cancellous bone screw, can reduce the incidence rate that cancellous bone screw is loosening even deviate from, and effectively improve in the fixed stability of cancellous bone fracture, reliability.
Technical scheme of the present invention is achieved in that and the present invention includes a male screw thread, male screw thread is an overall structure, one end of male screw thread is a point, the above outer wall of point is provided with one section external screw thread, the front and back ends duct that central authorities have two sections diameters not wait in the male screw thread, the front end channel diameter is less than the diameter in duct, rear end, be provided with female thread in the afterbody of duct, rear end, evenly cut out the expansion clearance of two lobes or pintongs on the axial direction from point along male screw thread, the expansion clearance extends to after front end duct and the junction, duct, rear end; The other end of male screw thread is spherical, and middle porose, this hole is connected with the duct, rear end, an inner bolt that is complementary with the afterbody duct of male screw thread, and the point of inner bolt is taper, afterbody is provided with screw thread, and interior six side's grooves that confession is screwed into are set in the afterbody.
Front end duct and junction, duct, rear end are taper.
The one tip draw point that is complementary with the front end channel diameter of male screw thread, the diameter of tip draw point is less than the front end channel diameter.
The present invention changes the screw and the way of contact of fracture spongy bone by mechanical swelling, and the resistance to plucking that can effectively improve cancellous bone screw goes out intensity and anti-spin intensity, increases the stability and the reliability of fracture internal fixation, reduces the operative failure incidence rate.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a tip draw point structural representation of the present invention;
Fig. 3 is an inner bolt structural representation of the present invention.
Below in conjunction with accompanying drawing structure of the present invention is described in detail.
The specific embodiment
Shown in Fig. 1,2,3, the present invention is made up of male screw thread 1 and inner bolt 2 two parts, and male screw thread 1 one ends are point 4, and male screw thread 1 other end is spherical, after the point 4 external screw thread 5 is arranged, and external screw thread 5 is the cancellous threads of self tapping.The front and back ends duct 6,7 that central authorities in the male screw thread 1 have two sections diameters not wait.Front end duct 6 diameters are less than the diameter in duct, screw rear end 7, and 6,7 junctions, front and back ends duct are taper.Duct, rear end 7 inwalls are provided with the female thread that is complementary with inner bolt 2.At the point 4 of male screw thread 1, in axial direction go up the expansion clearance that evenly cuts out two lobes or pintongs from the tip, the expansion clearance extends to after the junction, taper duct.The other end of male screw thread 1 is spherical, and middle porose 10, this hole 10 is connected with duct, rear end 7.With the inner bolt 2 that the duct, rear end 7 of male screw thread 1 is complementary, the most advanced and sophisticated position of inner bolt 2 also is taper, and afterbody is provided with screw thread and for the interior six side's grooves 9 that are screwed into.Be furnished with a tip draw point 3 that is complementary with front end duct 6 diameters of male screw thread 1 simultaneously, the diameter of tip draw point 3 is less than the diameter in front end duct 6, and for inserting fracture in advance, fixedly fracture site use resets.
The present invention can at first squeeze into fracture with tip draw point 3 in use, and fixedly fracture site resets temporarily; Under X line perspective, determine that the reduction of the fracture is satisfied, then male screw thread 1 is inserted in tip draw point 3, be screwed into along its direction, fixedly fracture site.Extract tip draw point 3 then out, again inner bolt 2 is inserted duct, male screw thread rear end 7, be screwed into inner bolt 2, till male screw thread point 4 expansion clearances reach expansion, the fracture site fixation.
Claims (3)
1, a kind of expanding type spongy bone hollow screw, it is characterized in that, comprise a male screw thread (1), male screw thread (1) is an overall structure, one end of male screw thread (1) is point (4), the above outer wall of point (4) is provided with one section external screw thread (5), front end duct (6) and duct, rear end (7) that the interior central authorities of male screw thread (1) have two sections diameters not wait, front end duct (6) diameter is less than the diameter of duct, rear end (7), be provided with female thread (8) in the afterbody of duct, rear end (7), along the expansion clearance that evenly cuts out two lobes or pintongs on the axial direction of male screw thread (1), the expansion clearance extends to after front end duct (6) and the junction, duct, rear end (7) from point (4); The other end of male screw thread (1) is spherical, middle porose (10), this hole (10) is connected with duct, rear end (7), one inner bolt (2) that is complementary with the afterbody duct of male screw thread (1), the point of inner bolt (2) is taper, afterbody is provided with screw thread, is provided with in the afterbody for the interior six side's grooves (9) that are screwed into.
2, expanding type spongy bone hollow screw according to claim 1 is characterized in that, front end duct (6) are taper with junction, duct, rear end (7).
3, expanding type spongy bone hollow screw according to claim 1 is characterized in that, a tip draw point (3) that is complementary with front end duct (6) diameter of male screw thread (1), and the diameter of tip draw point (3) is less than front end duct (6) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610043183 CN1899227A (en) | 2006-07-20 | 2006-07-20 | Expanding type spongy bone hollow screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610043183 CN1899227A (en) | 2006-07-20 | 2006-07-20 | Expanding type spongy bone hollow screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1899227A true CN1899227A (en) | 2007-01-24 |
Family
ID=37655349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610043183 Pending CN1899227A (en) | 2006-07-20 | 2006-07-20 | Expanding type spongy bone hollow screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1899227A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835996A (en) * | 2011-06-23 | 2012-12-26 | 厦门大博颖精医疗器械有限公司 | Locking pin type central nail device |
| WO2012174815A1 (en) * | 2011-06-23 | 2012-12-27 | 厦门大博颖精医疗器械有限公司 | Lock-pin central nail device |
| CN102961180A (en) * | 2012-12-06 | 2013-03-13 | 唐佩福 | Full-thread hollow screw stretching over bilateral sacroiliac joints |
| CN102973315A (en) * | 2012-12-05 | 2013-03-20 | 唐佩福 | Half-thread spongy bone hollow screw |
| CN103006307A (en) * | 2012-12-14 | 2013-04-03 | 深圳先进技术研究院 | Bone screw for fixing osteoporosis bone |
| CN104224302A (en) * | 2014-09-02 | 2014-12-24 | 浙江科惠医疗器械有限公司 | Locking bone screw with expansionstructure |
| CN107028649A (en) * | 2017-05-23 | 2017-08-11 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind is used for sufferers of osteoporosis face screw and strengthens fixing device |
-
2006
- 2006-07-20 CN CN 200610043183 patent/CN1899227A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835996A (en) * | 2011-06-23 | 2012-12-26 | 厦门大博颖精医疗器械有限公司 | Locking pin type central nail device |
| WO2012174815A1 (en) * | 2011-06-23 | 2012-12-27 | 厦门大博颖精医疗器械有限公司 | Lock-pin central nail device |
| CN102835996B (en) * | 2011-06-23 | 2015-08-26 | 厦门大博颖精医疗器械有限公司 | Lockpin type central nail device |
| CN102973315A (en) * | 2012-12-05 | 2013-03-20 | 唐佩福 | Half-thread spongy bone hollow screw |
| CN102961180A (en) * | 2012-12-06 | 2013-03-13 | 唐佩福 | Full-thread hollow screw stretching over bilateral sacroiliac joints |
| CN103006307A (en) * | 2012-12-14 | 2013-04-03 | 深圳先进技术研究院 | Bone screw for fixing osteoporosis bone |
| CN103006307B (en) * | 2012-12-14 | 2015-06-03 | 深圳先进技术研究院 | Bone screw for fixing osteoporosis bone |
| CN104224302A (en) * | 2014-09-02 | 2014-12-24 | 浙江科惠医疗器械有限公司 | Locking bone screw with expansionstructure |
| CN107028649A (en) * | 2017-05-23 | 2017-08-11 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind is used for sufferers of osteoporosis face screw and strengthens fixing device |
| CN107028649B (en) * | 2017-05-23 | 2024-03-26 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Screw reinforcing and fixing device for osteoporosis patient |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1899227A (en) | Expanding type spongy bone hollow screw | |
| CN201422919Y (en) | Anterolateral proximal femur locking steel plate | |
| JPH1085233A (en) | Supracondylar bone nail | |
| CN2936183Y (en) | Expansion type spongy bone hollow screw | |
| CN202146355U (en) | Femoral proximal triangular intramedullary nail | |
| EP0359793A1 (en) | Variable length fixation device | |
| CN102319103B (en) | Pressurized locking combined screw system and special composite screwdriver | |
| CN201019825Y (en) | Pressurization locking power coax nail-plate device | |
| CN201164501Y (en) | Internal fixation device for intertrochanteric fracture | |
| CN106821480A (en) | Femur pressure self-locked intramedullary needle | |
| CN206641903U (en) | It is a kind of can minimally invasive implantation near end of thighbone plate nail system | |
| CN100584284C (en) | Dilating expansion intramedullary nail | |
| CN201073332Y (en) | Shoulder lock arcuated hook plate | |
| US20220409252A1 (en) | Bone fixation system | |
| CN203138650U (en) | Improved bone marrow core decompression surgical instrument for femoral head necrosis | |
| CN205514844U (en) | Inboard bearing structure of thighbone neck and femoral neck fracture fixing device | |
| CN207024107U (en) | A kind of intertrochanteric fracture Medullary fixation system | |
| CN1631326A (en) | Opening type intramedullary nail | |
| CN201200467Y (en) | Distracting and expending intramedullary nail | |
| CN101234037A (en) | Dilating expansion intramedullary nail | |
| CN203634270U (en) | Lateral bending rotation-preventing intramedullary nail used at near end of thigh bone | |
| CN201171709Y (en) | Dynamic pressurization marrow internal fixation device | |
| CN201160889Y (en) | Dilating expansion intramedullary nail | |
| CN105640673A (en) | Artificial elbow joint surface replacement prosthesis | |
| CN201469391U (en) | Locking type goose head nail |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |