CN2562737Y - Spring cross locked intramedullary nail - Google Patents
Spring cross locked intramedullary nail Download PDFInfo
- Publication number
- CN2562737Y CN2562737Y CN 02279039 CN02279039U CN2562737Y CN 2562737 Y CN2562737 Y CN 2562737Y CN 02279039 CN02279039 CN 02279039 CN 02279039 U CN02279039 U CN 02279039U CN 2562737 Y CN2562737 Y CN 2562737Y
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- fracture
- elastic
- intramedullary nail
- nail body
- far
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Abstract
The utility model discloses an internal fixation apparatus elastic locking intramedullary nail for clinic orthopaedics, comprising an intramedullary nail and a bolt, wherein the intramedullary nail consists of a near end nail body, a connecting turnbuckle, an elastic device, an inner bolt or an inner nut and a far end nail body; the near end nail body is in threaded connection with the connecting turnbuckle which is in sliding connection with the far end nail body; the inner bolt or the inner nut is in threaded connection with the far end nail body; the elastic device which is a rigid spring or a macromolecule elastic rubber capsule is arranged inside the connecting turnbuckle. Using the intramedullary nail to treat the backbone fracture can effectively avoid the bone necrosis and absorption of the fracture ends and eliminate the stressing occlusion; moreover, because the far and the near ends of the fracture have 2mm of micro motion range, the active force which can help the union of the fracture and stimulate the growth of the bone callus is generated on the fracture ends; thereby speeding up the fracture heeling, avoiding the osteoporosis and reinforcing the bone intensity.
Description
Affiliated technical field
This utility model relates to a kind of clinical orthopaedics internal fixation device elastic interlocking intramedullary nail, is applicable to the treatment shaft fracture.
Background technology
During the orthopaedics therapy shaft fracture, normally in key pulp cavity, insert intramedullary pin and make fracture end connection and fixing.Improvement along with fracture internal fixation technology, intramedullary nail with lock has appearred, auto-compress locking nail has appearred again then, treatment shaft fracture technology is progressively improved and perfect, the particularly latter's clinical practice, not only effectively control fracture end and bent, turn round, cut, revolved stress, and significantly reduced the nonunion rate, reduced infection rate simultaneously.But often damage in clinical because of the fracture end sclerotin is existing, under health gravity, muscular contraction force or other external force effect, cause the necrosis and the absorption of fracture end sclerotin easily, to cause fracture end can't produce pressure after a period of time, still can be subjected to the stress shielding of intramedullary pin, still problems such as nonunion, delayed union or refracture can occur.
Summary of the invention
The purpose of this utility model just is to solve all difficulties that existing clinical orthopaedics treatment shaft fracture occurs, a kind of novel elastic interlocking intramedullary nail is provided, can effectively avoid fracture end necrosis of bone and absorption, eliminate stress and block, make fracture end produce the active force that helps union of fracture and stimulate callus to generate, accelerating union of bone fracture strengthens sclerotin intensity.
Technology contents of the present utility model is as follows:
Elastic interlocking intramedullary nail comprises intramedullary pin and screw, and intramedullary pin follows closely body, connection swivel nut, elastic device, inner bolt or inner nut by near-end and far-end nail body is formed.Near-end nail body be connected swivel nut and be threaded, connecting swivel nut then is slidingly connected with far-end nail body, inner bolt or inner nut and far-end nail body is also for being threaded, and inner bolt or inner nut can prevent far-end nail body and be connected swivel nut and separate and nail occurs taking off that elastic device is positioned at the connection swivel nut.Gap between near-end nail body and inner bolt or the inner nut is about 2 millimeters, can expand as 3 millimeters to comminuted fracture.
Connecting swivel nut and far-end follows closely body and is slidingly connected and generally can adopts that feather key is slidingly connected etc., also can the V-arrangement projection be set at connection swivel nut one end radially inner side, be slidingly connected with the v-depression corresponding matching guiding of far-end nail body link external diameter setting, and can prevent that the latter from rotating.
Elastic device is stiffness spring or high polymer elastic rubber bag tank.Stiffness spring is a cylindrical compression spring, is enclosed within to connect between swivel nut inwall and inner bolt or the inner nut outer wall; The high polymer elastic rubber bag tank is spherical in shape, for adorning hydraulic oil in whole rubber bag tank or the hollow capsules, places between the biend that near-end nail body, inner bolt or inner nut contact with it, and the biend and the spherical rubber capsule corresponding matching cambered surface all spherical in shape of contact.Stiffness spring or high polymer elastic rubber bag tank elasticity can be set according to the difference of fracture site, kind and patient age size, make it help the healing of fracture end.
During clinical practice, operating routine by interlocking intramedullary nail is inserted elastic interlocking intramedullary nail in key pulp cavity, with human weight, muscular contraction force, or under external force, far-end nail body can be followed closely body to near-end and move, because of the effect of elastic devices such as spring or high polymer elastic rubber bag tank is arranged, can avoid fracture end necrosis of bone and absorption, because it is far away, can only fine motion in 2 mm clearance between the near-end nail body, fracture correspondingly is far away, near-end also has only 2 millimeters fine motion scope, has stress stimulation and conduction in the fracture end agglutination all the time thereby make, so that stimulate callus to generate, promote union of fracture.
When elastic interlocking intramedullary nail is used for the treatment of shaft fracture, can effectively avoid fracture end necrosis of bone and absorption, eliminate stress and block, because fracture is far away, near-end has 2 millimeters fine motion scope, fracture end can produce the active force that helps union of fracture and stimulate callus to generate, accelerating union of bone fracture prevents to produce osteoporosis, strengthens sclerotin intensity.
Description of drawings
Fig. 1 is an elastic interlocking intramedullary nail I type structural representation
Fig. 2 is an elastic interlocking intramedullary nail II type structural representation
The specific embodiment
Introduce embodiment of the present utility model below in conjunction with accompanying drawing:
Elastic interlocking intramedullary nail comprises intramedullary pin and screw, and intramedullary pin is followed closely body (1), connection swivel nut (2), elastic device (3) (6), inner bolt (4) and far-end nail body (5) by near-end and formed.Near-end nail body (1) be connected swivel nut (2) and be threaded.Connecting swivel nut (2) one end radially inner sides has 2 V-arrangement projections, and 2 v-depression corresponding matching guiding of following closely body (5) link external diameter with far-end are slidingly connected.Inner bolt (4) and far-end nail body (5) proximal portion screw holes is threaded (when adopting inner nut, inner nut then is threaded with far-end nail body near-end screw rod head), and prevents to connect swivel nut (2) and follow closely body (5) with far-end and separate.
Elastic device divides the stiffness spring (3) of I type structure and the high polymer elastic rubber bag tank (6) of II type structure.Stiffness spring (3) is a cylindrical compression spring, is enclosed within to connect between swivel nut (2) inwall and inner bolt (4) outer wall; High polymer elastic rubber bag tank (6) is spherical in shape, for adorning hydraulic oil in whole rubber bag tank or the hollow capsules, place between the biend that near-end nail body (1), inner bolt (4) contact with it, and the biend that contacts cooperates cambered surface all spherical in shape with the spherical rubber capsule.
Claims (6)
1. the elastic interlocking intramedullary nail of clinical orthopaedics treatment shaft fracture, comprise intramedullary pin and screw, it is characterized in that intramedullary pin is followed closely body, connection swivel nut, elastic device, inner bolt or inner nut by near-end and far-end nail body is formed, near-end nail body be connected swivel nut and be threaded, connecting swivel nut then is slidingly connected with far-end nail body, inner bolt or inner nut are threaded with far-end nail body, and elastic device is positioned at and connects swivel nut.
2. elastic interlocking intramedullary nail according to claim 1, it is characterized in that connecting swivel nut one end radially inner side has the V-arrangement projection, and the v-depression corresponding matching guiding of following closely body link external diameter with far-end is slidingly connected.
3. elastic interlocking intramedullary nail according to claim 1 is characterized in that elastic device is stiffness spring or high polymer elastic rubber bag tank.
4. elastic interlocking intramedullary nail according to claim 3 is characterized in that stiffness spring is a cylindrical spring, is enclosed within to connect between swivel nut inwall and inner bolt or the inner nut outer wall.
5. elastic interlocking intramedullary nail according to claim 3 is characterized in that the high polymer elastic rubber bag tank is spherical in shape, for adorning hydraulic oil in whole rubber bag tank or the hollow capsules, places between the biend that near-end nail body, inner bolt or inner nut contact with it.
6. elastic interlocking intramedullary nail according to claim 5, what it is characterized in that near-end nail body, inner bolt or inner nut and high polymer elastic rubber bag tank contacts end face cambered surface all spherical in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279039 CN2562737Y (en) | 2002-09-02 | 2002-09-02 | Spring cross locked intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279039 CN2562737Y (en) | 2002-09-02 | 2002-09-02 | Spring cross locked intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2562737Y true CN2562737Y (en) | 2003-07-30 |
Family
ID=33742209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279039 Expired - Fee Related CN2562737Y (en) | 2002-09-02 | 2002-09-02 | Spring cross locked intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2562737Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332634C (en) * | 2005-07-14 | 2007-08-22 | 中国人民解放军南京军区南京总医院 | Interlocking intramedullary nail having photoelectric positioning system |
| CN102920498A (en) * | 2012-10-24 | 2013-02-13 | 高国栋 | Telescopic tibiofibular syndesmosis fastening screw |
| CN108652725A (en) * | 2018-05-23 | 2018-10-16 | 江苏艾为康医疗器械科技有限公司 | Elastic pinning for cross locking marrow nail |
| CN110786921A (en) * | 2019-11-05 | 2020-02-14 | 邹祥 | Medical bone nail |
| CN112451073A (en) * | 2020-11-26 | 2021-03-09 | 合肥市第二人民医院 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
-
2002
- 2002-09-02 CN CN 02279039 patent/CN2562737Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332634C (en) * | 2005-07-14 | 2007-08-22 | 中国人民解放军南京军区南京总医院 | Interlocking intramedullary nail having photoelectric positioning system |
| CN102920498A (en) * | 2012-10-24 | 2013-02-13 | 高国栋 | Telescopic tibiofibular syndesmosis fastening screw |
| CN102920498B (en) * | 2012-10-24 | 2015-05-27 | 高国栋 | Telescopic tibiofibular syndesmosis fastening screw |
| CN108652725A (en) * | 2018-05-23 | 2018-10-16 | 江苏艾为康医疗器械科技有限公司 | Elastic pinning for cross locking marrow nail |
| CN110786921A (en) * | 2019-11-05 | 2020-02-14 | 邹祥 | Medical bone nail |
| CN110786921B (en) * | 2019-11-05 | 2021-04-13 | 邹祥 | Medical bone nail |
| CN112451073A (en) * | 2020-11-26 | 2021-03-09 | 合肥市第二人民医院 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANG QIUXIA Free format text: FORMER OWNER: SONG WENCHAO Effective date: 20040409 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040409 Address after: Six, West building, No. 35, building 5, Haihe Road, No. 462001, Luohe, Henan Patentee after: Wang Qiuxia Address before: Six, West building, No. 35, building 5, Haihe Road, No. 462001, Luohe, Henan Patentee before: Song Wenchao |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |