CN104000647A - Gamma intramedullary nail - Google Patents
Gamma intramedullary nail Download PDFInfo
- Publication number
- CN104000647A CN104000647A CN201410256428.2A CN201410256428A CN104000647A CN 104000647 A CN104000647 A CN 104000647A CN 201410256428 A CN201410256428 A CN 201410256428A CN 104000647 A CN104000647 A CN 104000647A
- Authority
- CN
- China
- Prior art keywords
- intramedullary pin
- gamma
- matching
- connecting bolt
- cutter head
- 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
Classifications
-
- 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
- A61B17/72—Intramedullary pins, nails or other devices
-
- 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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/7241—Intramedullary pins, nails or other devices with special means of locking the nail to the bone the nail having separate elements through which screws pass
Abstract
The invention relates to a gamma intramedullary nail. The gamma intramedullary nail is formed by combining an intramedullary nail body, a lag screw and a fixed screw. The intramedullary nail body is composed of a long-strip-shaped cylindrical nail rod and a tail cap arranged on the tail portion. A plurality of long-strip-shaped grooves are evenly formed in the outer wall of the front end of the nail rod in the axial direction. A front transverse through hole matched with the fixed screw is formed in the front portion of the nail rod. The tail portion of the nail rod is provided with a rear transverse through hole matched with the lag screw. The lag screw is composed of a spiral tool bit, a connection bolt, a screwing-resistant casing pipe and a screwing-resistant nut. According to the gamma intramedullary nail, the lag screw can be automatically locked so that the gamma intramedullary nail can be prevented from being loosened when used and potential safety hazards can be avoided.
Description
Technical field
The present invention relates to plastic surgery's member, specially refer to a kind of gamma intramedullary pin.
Background technology
Intramedullary pin is combined by intramedullary pin main body, lag screw and hold-down screw conventionally.
Intramedullary pin can be for the fracture of location and the fixing long bone such as femur.In the femur of fracture, can intramedullary pin main body be inserted in the pulp cavity of femur and be placed to along the fracture line of femur and extend.Then, hold-down screw or other fixtures can be inserted on the opposite side of the femur that is passed in fracture and be formed on the hole in intramedullary pin main body, be fixed together with relative section of the femur of guaranteeing fracture.
If head and/or the neck of the head of long bone and/or for example femur of neck rupture, lag screw can be inserted in the transverse holes (transverse bore) being formed in intramedullary pin main body.This hole is arranged such that lag screw extends through the neck of long bone and to the head of long bone and through fracture line, this makes lag screw can reduce the head of long bone and/or the fracture of neck.
Intramedullary pin in use, realize axially and the locking of hoop, but lag screw can not be realized self-locking, has potential safety hazard by hold-down screw.
Summary of the invention
Technical problem to be solved by this invention is: a kind of gamma intramedullary pin is provided, and its lag screw can be realized self-locking.
For addressing the above problem, the technical solution used in the present invention is: gamma intramedullary pin, combined by intramedullary pin main body, lag screw and hold-down screw, described intramedullary pin main body is made up of rectangular columned nail bar and the tail cap that is arranged on afterbody, the front end outer wall of nail bar is provided with equally distributed many rectangular grooves vertically, the front portion of nail bar is provided with the front horizontal through hole matching with hold-down screw, and the afterbody of nail bar is provided with the rear horizontal through hole matching with lag screw; Described lag screw is made up of spiral cutter head, connecting bolt, anti-rotation set pipe and anti-spin nut, the anterior outer wall of spiral cutter head is provided with spirillum, rear portion is cylindrical structure, and the afterbody of spiral cutter head is provided with draw-in groove, and on face, is provided with the first dentate stripe in its back-end; The front portion of connecting bolt is provided with the annulus plush copper matching with draw-in groove, and the rear portion outer setting of connecting bolt has external screw thread; Anti-rotation set pipe is tubular structure, and it is sleeved on the outside of rear portion, connecting bolt and the anti-spin nut of spiral cutter head; The inwall of anti-spin nut is provided with the female thread matching with the rear external thread of connecting bolt, is provided with the second dentate stripe matching with the first dentate stripe arranging on the rear end face of spiral cutter head on the front end face of anti-spin nut.
Between described nail bar and tail cap, be connected by screw thread.
In the rear end face of described connecting bolt, be provided with interior hexagonal groove.
The leading portion inwall of described anti-rotation set pipe is the cylindrical structural matching with the rear portion of spiral cutter head, and the back segment inwall of anti-rotation set pipe is flat hole, and the outer wall of described anti-spin nut is the shape matching with flat hole.
The outer wall both sides of described anti-spin nut are provided with Elastic buckle.
The outer wall of described anti-rotation set pipe is provided with two protuberances.
The afterbody of described hold-down screw is greater than the width of front horizontal through hole.
Described rear horizontal through hole is and the axial oblique slotted eye at an angle of following closely bar.
The invention has the beneficial effects as follows: above-mentioned gamma intramedullary pin, its lag screw can be realized self-locking, thereby can prevent from occurring in use loosening phenomenon, has avoided potential safety hazard.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is using state figure of the present invention;
Fig. 3 is the perspective view of lag screw in Fig. 1;
Fig. 4 is the assembly structure schematic diagram of the lag screw of Fig. 2;
Fig. 5 is the structural representation of spiral cutter head in Fig. 3;
Fig. 6 is the structural representation of anti-rotation set pipe in Fig. 3;
Fig. 7 is the left TV structure schematic diagram of anti-rotation set pipe in Fig. 6;
Fig. 8 is the structural representation of connecting bolt in Fig. 3;
Fig. 9 is another line of vision structural representation of connecting bolt in Fig. 3;
Figure 10 is the structural representation of anti-spin nut in Fig. 3;
Figure 11 is another line of vision structural representation of anti-spin nut in Fig. 3;
Figure 12 is the structural representation of tail cap in Fig. 1;
Figure 13 is the structural representation of hold-down screw in Fig. 1;
Figure 14 is the structural representation of following closely bar in Fig. 1;
Figure 15 is the structural representation of following closely another line of vision of bar in Fig. 1;
Figure 16 is the structural representation of following closely another line of vision of bar in Fig. 1;
Figure 17 is the plan view of hold-down screw part in Fig. 1;
In figure: 1, nail bar, 2, tail cap, 3, rectangular groove, 4, hold-down screw, 5, front horizontal through hole, 6, rear horizontal through hole, 7, spiral cutter head, 8, connecting bolt, 9, anti-rotation set pipe, 10, anti-spin nut, 11, draw-in groove, 12, the first dentate stripe, 13, annulus plush copper, 14, external screw thread, 15, interior hexagonal groove, 16, female thread, 17, the second dentate stripe, 18, Elastic buckle, 19, flat hole.
Detailed description of the invention
Below by specific embodiment, gamma intramedullary pin of the present invention is described in further detail.
As Fig. 1, shown in Fig. 2, gamma intramedullary pin, by intramedullary pin main body, lag screw and hold-down screw 4 combine, the structure of hold-down screw 4 as shown in figure 13, described intramedullary pin main body is made up of with the tail cap 2 that is arranged on afterbody rectangular columned nail bar 1, the structure of tail cap 2 as shown in figure 12, between nail bar 1 and tail cap 2, be connected by screw thread, as Figure 14, Figure 15, shown in Figure 16, the front end outer wall of nail bar 1 is provided with equally distributed many rectangular grooves 3 vertically, the front portion of nail bar 1 is provided with the front horizontal through hole 5 matching with hold-down screw 4, the afterbody of nail bar 1 is provided with the rear horizontal through hole 6 matching with lag screw, as shown in Figure 3, Figure 4, described lag screw is made up of spiral cutter head 7, connecting bolt 8, anti-rotation set pipe 9 and anti-spin nut 10, as shown in Figure 5, the anterior outer wall of spiral cutter head 7 is provided with spirillum, rear portion is cylindrical structure, the afterbody of spiral cutter head 7 is provided with draw-in groove 11, and on face, is provided with the first dentate stripe 12 in its back-end, as shown in Figure 8, Figure 9, the front portion of connecting bolt 8 is provided with the annulus plush copper 13 matching with draw-in groove 11, and the rear portion outer setting of connecting bolt 8 has external screw thread 14, is provided with interior hexagonal groove 15 in the rear end face of connecting bolt 8, as shown in Figure 6, Figure 7, anti-rotation set pipe 9 is tubular structure, and it is sleeved on the outside of rear portion, connecting bolt 8 and the anti-spin nut 10 of spiral cutter head 7, as shown in Figure 10, Figure 11, the inwall of anti-spin nut 10 is provided with the female thread 16 matching with the rear external thread 14 of connecting bolt 8, is provided with the second dentate stripe 17 matching with the first dentate stripe 12 arranging on the rear end face of spiral cutter head 7 on the front end face of anti-spin nut 10.
As shown in Figure 6, Figure 7, the leading portion inwall of described anti-rotation set pipe 9 is the cylindrical structural matching with the rear portion of spiral cutter head 7, the back segment inwall of anti-rotation set pipe 9 is flat hole 19, as shown in Figure 10, Figure 11, the outer wall of described anti-spin nut 10 is the shape matching with flat hole 19, and the outer wall both sides of anti-spin nut 10 are provided with Elastic buckle 18.Realize the hoop locking between anti-spin nut 10 and anti-rotation set pipe 9 by flat hole 19.
As shown in Figure 6, Figure 7, the outer wall of described anti-rotation set pipe 9 is provided with two protuberances.By protuberance is set, the outer wall that makes anti-rotation set pipe 9 is non-cylinder, after implantation skeleton, is difficult for turn.
As shown in Figure 2, above-mentioned gamma intramedullary pin, in use, use special apparatus that intramedullary pin main body is implanted in skeleton, hold-down screw 4 is penetrated in front horizontal through hole 5, as shown in figure 17, the afterbody of hold-down screw 4 is greater than the width of front horizontal through hole 5, it is spacing that thereby the afterbody of hold-down screw 4 is realized, lag screw is penetrated in rear horizontal through hole 6, rear laterally through hole 6 is and the axial oblique slotted eye at an angle of following closely bar 1, lag screw is in insertion afterwards laterally when through hole 6, the afterbody of lag screw is greater than the width of rear horizontal through hole 6 equally, it is spacing that thereby the afterbody of lag screw is realized, thereby realize the locking of the axial and hoop of intramedullary pin main body, after installation, whole intramedullary pin is the shape of Greek alphabet gamma, so be called gamma intramedullary pin.In the time that lag screw is installed, first spiral cutter head 7 is passed to rear horizontal through hole 6, implant bones, the anterior annulus plush copper 13 of connecting bolt 8 is stuck in the draw-in groove 11 of spiral cutter head 7, then casing pipe sleeve is contained in to its outside, to resist spin nut 10 to be arranged in anti-rotation set pipe 9, by flat hole 19 and Elastic buckle 18, realize the hoop locking between anti-spin nut 10 and anti-rotation set pipe 9, adopt turret head instrument, turn connecting bolt 8, the female thread 16 of anti-spin nut 10 and the external screw thread 14 of connecting bolt 8 are meshed, now anti-spin nut 10 spiral that is progressively connected is close, and till the dentate stripe phase interlock on the dentate stripe in anti-spin nut 10 front end faces and spiral cutter head 7 rear end faces, mutual interlock by dentate stripe realizes locking.
The above embodiments are principle and effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. gamma intramedullary pin, combined by intramedullary pin main body, lag screw and hold-down screw, it is characterized in that: described intramedullary pin main body is made up of rectangular columned nail bar and the tail cap that is arranged on afterbody, the front end outer wall of nail bar is provided with equally distributed many rectangular grooves vertically, the front portion of nail bar is provided with the front horizontal through hole matching with hold-down screw, and the afterbody of nail bar is provided with the rear horizontal through hole matching with lag screw;
Described lag screw is made up of spiral cutter head, connecting bolt, anti-rotation set pipe and anti-spin nut, the anterior outer wall of spiral cutter head is provided with spirillum, rear portion is cylindrical structure, and the afterbody of spiral cutter head is provided with draw-in groove, and on face, is provided with the first dentate stripe in its back-end; The front portion of connecting bolt is provided with the annulus plush copper matching with draw-in groove, and the rear portion outer setting of connecting bolt has external screw thread; Anti-rotation set pipe is tubular structure, and it is sleeved on the outside of rear portion, connecting bolt and the anti-spin nut of spiral cutter head; The inwall of anti-spin nut is provided with the female thread matching with the rear external thread of connecting bolt, is provided with the second dentate stripe matching with the first dentate stripe arranging on the rear end face of spiral cutter head on the front end face of anti-spin nut.
2. gamma intramedullary pin according to claim 1, is characterized in that: between described nail bar and tail cap, be connected by screw thread.
3. gamma intramedullary pin according to claim 1, is characterized in that: in the rear end face of described connecting bolt, be provided with interior hexagonal groove.
4. gamma intramedullary pin according to claim 1, it is characterized in that: the leading portion inwall of described anti-rotation set pipe is the cylindrical structural matching with the rear portion of spiral cutter head, the back segment inwall of anti-rotation set pipe is flat hole, and the outer wall of described anti-spin nut is the shape matching with flat hole.
5. gamma intramedullary pin according to claim 4, is characterized in that: the outer wall both sides of described anti-spin nut are provided with Elastic buckle.
6. gamma intramedullary pin according to claim 1, is characterized in that: the outer wall of described anti-rotation set pipe is provided with two protuberances.
7. gamma intramedullary pin according to claim 1, is characterized in that: the afterbody of described hold-down screw is greater than the width of front horizontal through hole.
8. gamma intramedullary pin according to claim 1, is characterized in that: described rear horizontal through hole is and the axial oblique slotted eye at an angle of following closely bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256428.2A CN104000647A (en) | 2014-06-10 | 2014-06-10 | Gamma intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256428.2A CN104000647A (en) | 2014-06-10 | 2014-06-10 | Gamma intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104000647A true CN104000647A (en) | 2014-08-27 |
Family
ID=51361751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410256428.2A Pending CN104000647A (en) | 2014-06-10 | 2014-06-10 | Gamma intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104000647A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106580416A (en) * | 2017-01-16 | 2017-04-26 | 上海市第六人民医院 | Intertrochanteric fracture intramedullary fixation system |
| CN108309422A (en) * | 2018-01-18 | 2018-07-24 | 江苏百易得医疗科技有限公司 | A kind of femur intramedullary nail |
| CN108542485A (en) * | 2018-02-13 | 2018-09-18 | 苏州爱得科技发展股份有限公司 | A kind of femoral interlocking nail |
| CN109009387A (en) * | 2018-08-17 | 2018-12-18 | 上海市第六人民医院 | Femur intramedullary nail that is inflatable and voluntarily degrading |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050055024A1 (en) * | 2003-09-08 | 2005-03-10 | James Anthony H. | Orthopaedic implant and screw assembly |
| CN1798529A (en) * | 2003-04-09 | 2006-07-05 | 辛迪思有限公司 | Intramedullary nail for femur fracture fixation |
| CN101601605A (en) * | 2009-07-14 | 2009-12-16 | 常州市康辉医疗器械有限公司 | Intramedullary nail fixation device for fractured near end of thighbone |
| CN201624765U (en) * | 2010-01-29 | 2010-11-10 | 厦门大博颖精医疗器械有限公司 | Proximal femoral internal fixer |
| CN103327918A (en) * | 2011-01-21 | 2013-09-25 | 新特斯有限责任公司 | Trochanteric femoral nail augmentable |
| CN103415264A (en) * | 2011-02-08 | 2013-11-27 | 史赛克创伤有限公司 | Implant system for bone fixation |
| CN203885598U (en) * | 2014-06-10 | 2014-10-22 | 江苏百易得医疗科技有限公司 | Gamma intramedullary nail |
-
2014
- 2014-06-10 CN CN201410256428.2A patent/CN104000647A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1798529A (en) * | 2003-04-09 | 2006-07-05 | 辛迪思有限公司 | Intramedullary nail for femur fracture fixation |
| US20050055024A1 (en) * | 2003-09-08 | 2005-03-10 | James Anthony H. | Orthopaedic implant and screw assembly |
| CN101601605A (en) * | 2009-07-14 | 2009-12-16 | 常州市康辉医疗器械有限公司 | Intramedullary nail fixation device for fractured near end of thighbone |
| CN201624765U (en) * | 2010-01-29 | 2010-11-10 | 厦门大博颖精医疗器械有限公司 | Proximal femoral internal fixer |
| CN103327918A (en) * | 2011-01-21 | 2013-09-25 | 新特斯有限责任公司 | Trochanteric femoral nail augmentable |
| CN103415264A (en) * | 2011-02-08 | 2013-11-27 | 史赛克创伤有限公司 | Implant system for bone fixation |
| CN203885598U (en) * | 2014-06-10 | 2014-10-22 | 江苏百易得医疗科技有限公司 | Gamma intramedullary nail |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106580416A (en) * | 2017-01-16 | 2017-04-26 | 上海市第六人民医院 | Intertrochanteric fracture intramedullary fixation system |
| CN108309422A (en) * | 2018-01-18 | 2018-07-24 | 江苏百易得医疗科技有限公司 | A kind of femur intramedullary nail |
| CN108542485A (en) * | 2018-02-13 | 2018-09-18 | 苏州爱得科技发展股份有限公司 | A kind of femoral interlocking nail |
| CN109009387A (en) * | 2018-08-17 | 2018-12-18 | 上海市第六人民医院 | Femur intramedullary nail that is inflatable and voluntarily degrading |
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| Date | Code | Title | Description |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140827 |