CN103860252A - Medical anchor type cancellous bone screw - Google Patents
Medical anchor type cancellous bone screw Download PDFInfo
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- CN103860252A CN103860252A CN201410083133.XA CN201410083133A CN103860252A CN 103860252 A CN103860252 A CN 103860252A CN 201410083133 A CN201410083133 A CN 201410083133A CN 103860252 A CN103860252 A CN 103860252A
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- screw thread
- cancellous bone
- screw
- male screw
- bone screw
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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
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- 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)
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- Surgical Instruments (AREA)
Abstract
The invention discloses a medical anchor type cancellous bone screw which consists of an outer screw and two fixing pins, wherein the outer screw is of an integral structure, is divided into a head side and a tail side and is internally provided with a cylindrical hollow hole passage for placing in a guide pin when the screw is screwed in; the outer screw is internally symmetrically provided with two J-shaped hole passages in which the two fixing pins are inserted, and the two fixing fins and the outer screw form an anchor type structure. The fixing fins extend aside the screw, so that the contact mode between the cancellous bone screw and a bone is changed, the occurrence rate that the cancellous bone screw is loosened and even separated can be reduced, the anti-rotation and anti-slip capabilities of the cancellous bone screw are effectively improved, the inner-fixation stability and reliability are enhanced, and the occurrence rate of operation failure is reduced.
Description
Technical field
The invention belongs to medical apparatus technical field, relate to a kind of medical bone screw, particularly a kind of anchor formula cancellous bone screw, can effectively improve stability, the reliability of bone fracture internal fixing device tool.
Background technology
At present, for the fracture at the spongy bone positions such as fracture of femoral neck, fracture of the femoral condyle, fracture of the tibial plateau, slipped femoral epiphysis, conventional Therapeutic Method is by surgical operation, fixing in the local reset of fracturing; And the Sacroiliac joint injury causing for many reasons, pelvis and fracture of acetabulum also all need the internal fixation treatment of performing the operation conventionally.Clinically, for the Therapeutic Method difference of concrete fracture, but its internal fixation device using mainly adopts cancellous bone screw to carry out the fixing of fracture site.But the major defect of its existence of cancellous bone screw using is at present that to lift constant intensity inadequate, after often causing performing the operation screw loosening deviate from, displacement fracture, finally cause internal fixation treatment failure.Particularly for clinical common osteoporosis senile fracture patient, because its unit volume internal skeleton amount reduces, screw is significantly declined to the hold of fracture site, adopt conventional cancellous bone screw to be fixedly difficult to the therapeutic effect that reaches stable in fracturing, its anti-rotation, slide ability is poor, very easily causes internal fixation screw to become flexible, thereby causes treating failure and severe complication.
Summary of the invention
For above-mentioned existing defect and deficiency, the object of the invention is to, a kind of anchor formula cancellous bone screw is provided, be mainly used in sufferers of osteoporosis face spinal surgery.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of medical anchor formula cancellous bone screw, is characterized in that, be made up of male screw thread and two pieces of steady pins, wherein, male screw thread is an overall structure, is divided into a side and tail side, and there is the cylindrical hollow duct that while supplying to be screwed into screw, guide pin is inserted inside; Wherein:
A described side has a point, and outer wall has external screw thread, for being screwed into fracture site; Described tail side is hemispherical, and there are six side's fixed grooves in the central authorities of hemispheric upper surface;
Be arranged with two " J " type ducts in male screw thread inside, and two " J " type ducts are all by afterbody and part point, from position of opening and outside UNICOM between the external screw thread pitch of point, one of them " J " type duct at the position of opening of the external screw thread pitch of male screw thread compared with position of opening Senior Two/mono-pitch in another duct; Two pieces of steady pins are inserted in two " J " type ducts, and two pieces of steady pins and male screw thread form anchoring component.
According to the present invention, two pieces of described steady pin one end are cylinder, and the other end is taper, and " J " type duct in size and male screw thread matches.
Anchor formula cancellous bone screw of the present invention, by the steady pin of side, can change the way of contact of cancellous bone screw and sclerotin, can reduce the loosening incidence rate of even deviating from of cancellous bone screw, effectively improve anti-rotation and the slide ability of cancellous bone screw, fixing stability and reliability in increasing, reduces operative failure incidence rate.
Accompanying drawing explanation
Fig. 1 is the male screw thread profile of medical anchor formula cancellous bone screw of the present invention.
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the steady pin section of structure of medical anchor formula cancellous bone screw of the present invention.
Below in conjunction with accompanying drawing, structure of the present invention is described in further detail.
The specific embodiment
As depicted in figs. 1 and 2, the present embodiment provides a kind of medical anchor formula cancellous bone screw, is made up of male screw thread 1 and two pieces of steady pins 2, wherein, male screw thread 1 is an overall structure, is divided into a side 4 and tail side 7, and there is the cylindrical hollow duct 3 that while supplying to be screwed into screw, guide pin is inserted inside; Wherein:
Described side 4 has a point, and outer wall has external screw thread 6, for being screwed into fracture site; Described tail side 7 is hemispherical, and there are six side's fixed grooves 8 in the central authorities of hemispheric upper surface;
Be arranged with two " J " type ducts 9 in male screw thread 1 inside, and two " J " type ducts 9 are all by afterbody 7 and part point 5, from position of opening and outside UNICOM between external screw thread 6 pitch of point 5, one of them " J " type duct 9 at the position of opening of external screw thread 6 pitch of male screw thread 1 compared with position of opening Senior Two/mono-pitch in another duct; Two pieces of steady pins 2 are inserted in two " J " type ducts 9, and two pieces of steady pins 2 and male screw thread 1 form anchoring component.
Whole male screw thread 1 is run through in cylindrical hollow duct 3, and six side's fixed grooves 8 from afterbody 7 are through to point 5;
Two " J " type ducts 9 are separate, and it is positioned at six side's fixed grooves 8 from afterbody 7 to the position of opening between external screw thread 6 pitch of point 5, is convenient to insert steady pin 2.
As shown in Figure 3, two pieces of steady pin 2 one end are cylinder, and the other end is taper 10, and " J " type duct 9 in size and male screw thread 1 matches.
In use, first a side 4 of male screw thread 1 being screwed into fracture site is fixed, then two pieces of steady pins 2 are inserted along " J " type duct 9, two pieces of steady pins 2 and male screw thread 1 form anchoring component, reach and improve that the resistance to plucking of cancellous bone screw goes out and the object of anti-rotation performance, increase fixing stability and reliability in fracture, reduce the incidence rate of operative failure.If find that the implantation position of male screw thread 1 is improper, can first take out steady pin 2, the male screw thread 1 of then back-outing.
Claims (2)
1. a medical anchor formula cancellous bone screw, is characterized in that, is made up of male screw thread (1) and two pieces of steady pins (2), wherein, male screw thread (1) is an overall structure, is divided into a side (4) and tail side (7), and there is the cylindrical hollow duct (3) that while supplying to be screwed into screw, guide pin is inserted inside; Wherein:
A described side (4) has a point, and outer wall has external screw thread (6), for being screwed into fracture site; Described tail side (7) is hemispherical, and there are six side's fixed grooves (8) in the central authorities of hemispheric upper surface;
Be arranged with two " J " type ducts (9) in male screw thread (1) inside, and two " J " type ducts (9) are all by afterbody (7) and part point (5), from position of opening and outside UNICOM between external screw thread (6) pitch of point (5), one of them " J " type duct (9) at the position of opening of external screw thread (6) pitch of male screw thread (1) compared with position of opening Senior Two/mono-pitch in another duct; Two pieces of steady pins (2) are inserted in two " J " type ducts (9), and two pieces of steady pins (2) and male screw thread (1) form anchoring component.
2. medical anchor formula cancellous bone screw as claimed in claim 1, is characterized in that, described two pieces of steady pins (2) one end is cylinder, and the other end is taper (10), and " J " type duct (9) in size and male screw thread (1) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083133.XA CN103860252A (en) | 2014-03-07 | 2014-03-07 | Medical anchor type cancellous bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410083133.XA CN103860252A (en) | 2014-03-07 | 2014-03-07 | Medical anchor type cancellous bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103860252A true CN103860252A (en) | 2014-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410083133.XA Pending CN103860252A (en) | 2014-03-07 | 2014-03-07 | Medical anchor type cancellous bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103860252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635031A (en) * | 2018-07-10 | 2018-10-12 | 河北医科大学第三医院 | A kind of fracture of tibial plateau pressurizer for capableing of self-retaining |
| CN114767244A (en) * | 2022-04-24 | 2022-07-22 | 苏州瑞华骨科医院有限公司 | Femoral head hollow screw |
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| CN1036693A (en) * | 1989-03-23 | 1989-11-01 | 重庆医科大学 | Intramedullary split-fixator |
| CN2150830Y (en) * | 1993-01-06 | 1993-12-29 | 王旭 | Composite pressure thread tack |
| JPH08103453A (en) * | 1994-10-05 | 1996-04-23 | Mitsuru Monma | Turning preventive means for operation to lower thigh inferior fracture |
| CN2300381Y (en) * | 1997-06-25 | 1998-12-16 | 王群波 | Femur neck-type marrow internal fixator |
| CN2303594Y (en) * | 1997-06-06 | 1999-01-13 | 重庆市中西医结合医院 | Adjustable double-locking type intramedullary nail |
| CN2376873Y (en) * | 1999-04-28 | 2000-05-10 | 胡玉华 | Double-side locking type screw |
| CN2448313Y (en) * | 2000-11-02 | 2001-09-19 | 黄儒收 | Femoral self-locking intramedullary fixing nail |
| CN2472680Y (en) * | 2001-03-15 | 2002-01-23 | 李健民 | Self locking intramedullary pin of humera shaft |
| CN2487349Y (en) * | 2001-08-07 | 2002-04-24 | 黄彰 | Pressing expansion screw with locking for neck of femur |
| CN2540163Y (en) * | 2002-05-20 | 2003-03-19 | 侯孝廉 | Internal fixator for fracture of neck of femur |
| CN2657595Y (en) * | 2003-11-28 | 2004-11-24 | 侯庆忠 | Neck of femur auto-locking anti-rotor fixation screw with pressure screw |
| CN2659365Y (en) * | 2003-12-10 | 2004-12-01 | 侯庆忠 | Fixing/self locking and composite interlock internal pulp nail between tuberosity of thigh-bone |
| CN2712294Y (en) * | 2004-07-02 | 2005-07-27 | 侯庆忠 | Self locking intramedullary nail for femur neck |
| WO2006024801A2 (en) * | 2004-08-25 | 2006-03-09 | Spinevision | Implant comprising one or more electrodes and corresponding insertion instrument |
| CN2936183Y (en) * | 2006-07-20 | 2007-08-22 | 中国人民解放军第四军医大学 | Expansion type spongy bone hollow screw |
| CN201481534U (en) * | 2009-09-11 | 2010-05-26 | 深圳市宝安区人民医院 | Elastic self-locking intramedullary pin |
| CN201734771U (en) * | 2010-07-23 | 2011-02-09 | 向铁城 | Intramedullary nail |
| CN102088922A (en) * | 2008-06-13 | 2011-06-08 | 奥叟菲克斯公司 | Intermarrow nail to be inserted into a fractured long bone |
| CN201870717U (en) * | 2010-12-05 | 2011-06-22 | 张全金 | Flexibly micromotion and slidably pressurization blocking-free shank interlocking nail |
| CN102166134A (en) * | 2010-02-26 | 2011-08-31 | 比德曼莫泰赫有限责任两合公司 | Bone screw |
| CN202960730U (en) * | 2012-12-31 | 2013-06-05 | 孙建民 | Medical fastening nail |
| CN203763223U (en) * | 2014-03-07 | 2014-08-13 | 中国人民解放军第四军医大学 | Medical anchor type spongy bone screw |
-
2014
- 2014-03-07 CN CN201410083133.XA patent/CN103860252A/en active Pending
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036693A (en) * | 1989-03-23 | 1989-11-01 | 重庆医科大学 | Intramedullary split-fixator |
| CN2150830Y (en) * | 1993-01-06 | 1993-12-29 | 王旭 | Composite pressure thread tack |
| JPH08103453A (en) * | 1994-10-05 | 1996-04-23 | Mitsuru Monma | Turning preventive means for operation to lower thigh inferior fracture |
| CN2303594Y (en) * | 1997-06-06 | 1999-01-13 | 重庆市中西医结合医院 | Adjustable double-locking type intramedullary nail |
| CN2300381Y (en) * | 1997-06-25 | 1998-12-16 | 王群波 | Femur neck-type marrow internal fixator |
| CN2376873Y (en) * | 1999-04-28 | 2000-05-10 | 胡玉华 | Double-side locking type screw |
| CN2448313Y (en) * | 2000-11-02 | 2001-09-19 | 黄儒收 | Femoral self-locking intramedullary fixing nail |
| CN2472680Y (en) * | 2001-03-15 | 2002-01-23 | 李健民 | Self locking intramedullary pin of humera shaft |
| CN2487349Y (en) * | 2001-08-07 | 2002-04-24 | 黄彰 | Pressing expansion screw with locking for neck of femur |
| CN2540163Y (en) * | 2002-05-20 | 2003-03-19 | 侯孝廉 | Internal fixator for fracture of neck of femur |
| CN2657595Y (en) * | 2003-11-28 | 2004-11-24 | 侯庆忠 | Neck of femur auto-locking anti-rotor fixation screw with pressure screw |
| CN2659365Y (en) * | 2003-12-10 | 2004-12-01 | 侯庆忠 | Fixing/self locking and composite interlock internal pulp nail between tuberosity of thigh-bone |
| CN2712294Y (en) * | 2004-07-02 | 2005-07-27 | 侯庆忠 | Self locking intramedullary nail for femur neck |
| WO2006024801A2 (en) * | 2004-08-25 | 2006-03-09 | Spinevision | Implant comprising one or more electrodes and corresponding insertion instrument |
| CN2936183Y (en) * | 2006-07-20 | 2007-08-22 | 中国人民解放军第四军医大学 | Expansion type spongy bone hollow screw |
| CN102088922A (en) * | 2008-06-13 | 2011-06-08 | 奥叟菲克斯公司 | Intermarrow nail to be inserted into a fractured long bone |
| CN201481534U (en) * | 2009-09-11 | 2010-05-26 | 深圳市宝安区人民医院 | Elastic self-locking intramedullary pin |
| CN102166134A (en) * | 2010-02-26 | 2011-08-31 | 比德曼莫泰赫有限责任两合公司 | Bone screw |
| CN201734771U (en) * | 2010-07-23 | 2011-02-09 | 向铁城 | Intramedullary nail |
| CN201870717U (en) * | 2010-12-05 | 2011-06-22 | 张全金 | Flexibly micromotion and slidably pressurization blocking-free shank interlocking nail |
| CN202960730U (en) * | 2012-12-31 | 2013-06-05 | 孙建民 | Medical fastening nail |
| CN203763223U (en) * | 2014-03-07 | 2014-08-13 | 中国人民解放军第四军医大学 | Medical anchor type spongy bone screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635031A (en) * | 2018-07-10 | 2018-10-12 | 河北医科大学第三医院 | A kind of fracture of tibial plateau pressurizer for capableing of self-retaining |
| CN114767244A (en) * | 2022-04-24 | 2022-07-22 | 苏州瑞华骨科医院有限公司 | Femoral head hollow screw |
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| 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: 20140618 |
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| RJ01 | Rejection of invention patent application after publication |