CN1188086C - Internal fixation steel plate for department of orthopedics - Google Patents
Internal fixation steel plate for department of orthopedics Download PDFInfo
- Publication number
- CN1188086C CN1188086C CNB021205051A CN02120505A CN1188086C CN 1188086 C CN1188086 C CN 1188086C CN B021205051 A CNB021205051 A CN B021205051A CN 02120505 A CN02120505 A CN 02120505A CN 1188086 C CN1188086 C CN 1188086C
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- steel plate
- screw
- lock
- bone
- internal fixation
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Abstract
The present invention relates to an internal fixation steel plate for orthopedics. The internal fixation steel plate comprises a fixation steel plate and screws with a lock. The present invention is characterized in that the steel plate is provided with a longitudinal arc-shaped concave on the surface which is in contact with a bone, and a plurality of oblong elliptical holes whose upper surfaces and lower surfaces are all spherical chute oblique planes; pulling force screws with a lock and forcing screws with a lock are respectively arranged in the elliptical holes; bone screw threads for fixing a bone are overspread on a screw rod of each pulling force screw with a lock; a hemispherical step screw cap is arranged on the head of each screw rod, a section of a screw rod connected with a screw nut is arranged above the center of the screw cap, and the center of the upper end of the screw rod has an inner hexagonal hole; one end of the screw nut, which faces to the screw cap, forms a hemispherical shape matched with the elliptical holes on the steel plate, and the other end of the screw nut forms an outer hexagonal shape; two hemispherical surfaces are oppositely formed in the elliptical holes on both sides of the steel plate. The steel plate of the present invention is from 2 to 4 millimeters distant from the surface of a bone, the normal blood circulation of periosteum is not influenced, and osteoporosis is prevented.
Description
One, technical field: the invention belongs to medical apparatus and instruments, particularly a kind of internal fixation steel plate for department of orthopedics.
Two, background technology: traditional internal fixation steel plate for department of orthopedics, its one side that contacts with skeleton is a plane, through a large amount of animal experiment and clinical practices, find that the part that steel plate contacts with skeleton easily produces osteoporosis, its reason is that the steel plate pressurization is fixed on bony surface, the blood circulation of periosteum is affected, thereby the blood supply that has destroyed skeleton cause.A kind of restriction contact compression steel plate is arranged at present, it is the zone that the both sides, plane that traditional steel plate contacts with skeleton is made into some depressions, the contact area of steel plate and sclerotin is reduced, so reduced to the sanguimotor influence of periosteum, the osteoporosis degree of skeleton is alleviated to some extent, this conclusion is confirmed in animal experiment and clinical practice, and this restriction contact compression steel plate does not fundamentally solve osteoporotic problem.Animal experiment proves that the secure fixation of contactless property internal fixation steel plate can prevent osteoporotic generation fully.But, also do not find a kind of contactless property internal fixation steel plate for department of orthopedics at present.
Three, summary of the invention: the objective of the invention is to design a kind of internal fixation steel plate that can either make and do not contact, can guarantee a kind of internal fixation steel plate for department of orthopedics again to the fracture site secure fixation with the sclerotin face.Technical solution of the present invention is such, it includes an internal fixation steel plate for department of orthopedics and screw with lock, it is characterized in that: the face that steel plate contacts with sclerotin has vertical arc-shaped recess, there are a plurality of upper and lower surfaces to be the rectangle elliptical aperture on spherical chute inclined-plane on the steel plate, be furnished with lag screw with lock and forcing screw with lock in the elliptical aperture, be covered with the bone thread that fix bone is arranged on the nail bar of lag screw with lock, the nail club head has a hemispherical step head of a nail, upwards there is one section screw rod that is connected with nut at head of a nail center, center, screw rod upper end is interior hexagonal hole, nut towards an end of the head of a nail be with steel plate on the hemispherical that matches of elliptical aperture, the nut other end is outer six sides, two hemispherical faces place relatively respectively in the two sides elliptical aperture of steel plate, wherein have a with lock forcing screw identical with lag screw shape with lock at least, the difference of two kinds of screws is that to have only the front portion on the nail bar of forcing screw with lock be thread segment.The present invention is owing to be fixed on fracture site with forcing screw with lock, make fracture portions obtain adding press fit, be fixed on the fracture both sides by 2-3 piece of lag screw with lock again, steel plate is installed then, use the nut check steel plate, make fracture obtain secure fixation, and steel plate has the 2-4 mm distance with bony surface, does not contact bony surface, does not therefore influence the normal blood circulation of periosteum, just do not destroy the hemotrophic nutrition supply of skeleton, so prevented osteoporotic generation fully yet.
Four, description of drawings: Fig. 1 is the A-A profile of steel plate structure sketch map of the present invention: Fig. 2 for Fig. 1; Fig. 3 is the B-B profile of Fig. 1; Fig. 4 is the C-C profile of Fig. 1; Fig. 5 is the structural representation of lag screw with lock, and Fig. 6 is a forcing screw with lock and the diagrammatic sketch that combines of pressurization swivel nut.Fig. 7 is a kind of internal fixation steel plate for department of orthopedics of the present invention and the fracture fixation user mode structural representation after good.
Five, the specific embodiment: further specify embodiment in conjunction with above accompanying drawing, several rectangle elliptical apertures are arranged in the middle of this internal fixation steel plate for department of orthopedics, the hole is near plane one side of skeleton with away from being spherical chute inclined-plane (as shown in Figures 2 and 3) around plane one side of skeleton, steel plate has arc-shaped recess longitudinally near plane one side of skeleton, as shown in Figure 4.Lag screw with lock as shown in Figure 5, it comprises the thread segment of fix bone and the screw rod of hold-down nut, the thread segment of fix bone is the full thread structure, its screw thread can be made into hard matter bone thread and cancellous threads as required, head of screw is spherical near a side of hold-down nut, and itself and steel plate rectangle elliptical aperture match near spherical chute inclined-plane around one side of skeleton plane.Screw thread on the screw rod of hold-down nut is thin than the screw thread of fix bone, and its screw thread is full nail bar fine thread structure, and there is interior hexagonal hole at the center, top, and available outer hexagon spanner is tightened screw with lock.The screw thread of nut and the screw flight of hold-down nut match, one end of nut is spherical, its sphere matches away from spherical chute inclined-plane around one side of skeleton plane with steel plate rectangle elliptical aperture, and the other end of nut is outer six sides, available interior hexagon spanner fastening nut.Forcing screw with lock as shown in Figure 6, the nail bar of its fix bone has only the anterior thread segment that is, remainder is a polished rod, cooperates with spherical step fracture site is pressurizeed fixedly the time.
When fixing fracture is operated, select the boring of suitable inlet point and direction, be screwed into forcing screw 1-2 with lock piece and make the fracture site pressurization, put into steel plate then, select inlet point to bore 2-3 hole respectively at the two sections of fracture by the hole of steel plate perpendicular to skeleton, take out steel plate, be screwed into lag screw with lock respectively, implant plate appropriate location then, tighten fracture earlier and go up or hypomere and nut, tighten under the fracture again or the nut of epimere, make of the spherical chute face slip of the sphere of nut along steel plate, make fracture produce pressurization longitudinally, so just guaranteed the secure fixation of fracture.Owing to the support of head of screw and the application of screw with lock, make steel plate astragalus matter that certain distance be arranged, and fracture is produced reliable fixing, fixing reliable purpose so reached the direct bony surface contact of a kind of internal fixation steel plate for department of orthopedics.
Claims (1)
1, a kind of internal fixation steel plate for department of orthopedics, it includes internal fixation steel plate for department of orthopedics and screw with lock, it is characterized in that: the face that steel plate contacts with sclerotin has vertical arc-shaped recess, there are a plurality of upper and lower surfaces to be the rectangle elliptical aperture on spherical chute inclined-plane on the steel plate, be furnished with lag screw with lock and forcing screw with lock in the elliptical aperture respectively, be covered with the bone thread that fix bone is arranged on the nail bar of lag screw with lock, the nail club head has a hemispherical step head of a nail, upwards there is one section screw rod that is connected with nut at head of a nail center, center, screw rod upper end is interior hexagonal hole, nut towards an end of the head of a nail be with steel plate on the hemispherical that matches of elliptical aperture, the nut other end is outer six sides, two hemispherical faces place relatively respectively in the two sides elliptical aperture of steel plate, wherein have at least one to be the with lock forcing screw identical with lag screw shape with lock, the difference of two kinds of screws is that to have only the front portion on the nail bar of forcing screw with lock be thread segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021205051A CN1188086C (en) | 2002-05-23 | 2002-05-23 | Internal fixation steel plate for department of orthopedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021205051A CN1188086C (en) | 2002-05-23 | 2002-05-23 | Internal fixation steel plate for department of orthopedics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1380043A CN1380043A (en) | 2002-11-20 |
| CN1188086C true CN1188086C (en) | 2005-02-09 |
Family
ID=4744775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021205051A Expired - Fee Related CN1188086C (en) | 2002-05-23 | 2002-05-23 | Internal fixation steel plate for department of orthopedics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1188086C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8105367B2 (en) | 2003-09-29 | 2012-01-31 | Smith & Nephew, Inc. | Bone plate and bone plate assemblies including polyaxial fasteners |
| US8382807B2 (en) | 2005-07-25 | 2013-02-26 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US8940028B2 (en) | 2005-07-25 | 2015-01-27 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112013032140A2 (en) | 2011-06-15 | 2016-12-13 | Smith & Nephew Inc | variable angle locking implant |
| CN102579118A (en) * | 2012-01-20 | 2012-07-18 | 张立春 | Bridge type connector outside periosteum |
| CN103445849A (en) * | 2013-09-13 | 2013-12-18 | 勘武生 | Dynamic locking plate for treating fracture of neck of femur |
| GB2557840B (en) | 2015-09-18 | 2021-07-21 | Smith & Nephew Inc | Bone plate |
| CN105596074B (en) * | 2016-03-16 | 2017-11-14 | 青岛大学附属医院 | The micro- contact steel plate screw system of bulb joint in medical shackle-type |
| CN107440776B (en) * | 2017-07-20 | 2020-07-14 | 南京市第一医院 | Internal fixing device for treating Hangman fracture by combining posterior lag screw with pedicle screw |
| CN114081607A (en) * | 2021-11-22 | 2022-02-25 | 宜兴市善卷骨科医院 | Calcaneal tubercle pressurizing and locking bone fracture plate and using method thereof |
-
2002
- 2002-05-23 CN CNB021205051A patent/CN1188086C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8105367B2 (en) | 2003-09-29 | 2012-01-31 | Smith & Nephew, Inc. | Bone plate and bone plate assemblies including polyaxial fasteners |
| US8992581B2 (en) | 2003-09-29 | 2015-03-31 | Smith & Nephew, Inc. | Bone plate and bone plate assemblies including polyaxial fasteners |
| US8382807B2 (en) | 2005-07-25 | 2013-02-26 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US8888824B2 (en) | 2005-07-25 | 2014-11-18 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US8940028B2 (en) | 2005-07-25 | 2015-01-27 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US10080598B2 (en) | 2005-07-25 | 2018-09-25 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US10092337B2 (en) | 2005-07-25 | 2018-10-09 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US10292741B2 (en) | 2005-07-25 | 2019-05-21 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US10327822B2 (en) | 2005-07-25 | 2019-06-25 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US10736680B2 (en) | 2005-07-25 | 2020-08-11 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
| US11896270B2 (en) | 2005-07-25 | 2024-02-13 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1380043A (en) | 2002-11-20 |
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| CF01 | Termination of patent right due to non-payment of annual fee |