CN1270008A - Autocontrollable creep-moving intramedullary nail with lock - Google Patents
Autocontrollable creep-moving intramedullary nail with lock Download PDFInfo
- Publication number
- CN1270008A CN1270008A CN 00114521 CN00114521A CN1270008A CN 1270008 A CN1270008 A CN 1270008A CN 00114521 CN00114521 CN 00114521 CN 00114521 A CN00114521 A CN 00114521A CN 1270008 A CN1270008 A CN 1270008A
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- China
- Prior art keywords
- far
- nail
- intramedullary
- creep
- moving
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Links
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000002560 therapeutic procedure Methods 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 abstract description 7
- 230000004938 stress stimulation Effects 0.000 abstract description 2
- 208000010392 Bone Fractures Diseases 0.000 description 32
- 206010017076 Fracture Diseases 0.000 description 31
- 230000035882 stress Effects 0.000 description 10
- 230000009894 physiological stress Effects 0.000 description 4
- 230000035876 healing Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004118 muscle contraction Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 210000003275 diaphysis Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
An autocontrollable creep-moving intramedullary nail with lock for treating fracture of backbone is composed of intramedullary nail and screw. Said intramedullary nail consists of the far-end and near-end nail bodies connected via creep-moving lock structure and the guide pin inserted in the link holes and dap of both and linked to external sleeve of near-end nail body. It can control the bend, torsion, shear and twist stresses of fractured bone and ensure the physiologic stress stimulation and transfer in longitudinal axis to avoid stress concentration. Its advantages are less damage to human body, simple operation and low cost.
Description
The invention discloses a kind of orthopaedics therapy shaft fracture connects and fixed autocontrollable creep-moving intramedullary nail with lock.
Shaft fracture adopts the intramedullary nail with lock treatment, can control the twisted stress of curved scissors of fracture end preferably, and is fixing reliable.Become the application mainstream of domestic and international treatment long bone shaft fracture since the eighties.But the axial stress of the pinning structure fracture end capable of blocking of the upper and lower end of intramedullary nail with lock." AO " advises the pinning of (6-8 week) taking-up one end in the regular period after surgery, to prevent nonunion or delayed union.The twisted stress of curved scissors of the strong internal fixation control in fracture back fracture end, recover the support effect of skeleton, should have axial physiological stress to stimulate the stability of equilibrium that recovers skeletal musculature with conduction with fracture back fracture end, the contradiction that this stress is picked up retaining and stress stimulation is still present orthopaedics and the engineering educational circles unsolved difficult problem making great efforts solution still so far.
The purpose of this invention is to provide a kind of intramedullary nail with lock of realizing the controlled axial auto-controlled fine motion of fracture end, can significantly reduce the nonunion rate, can not only effectively control fracture end and bend, turn round, cut, revolve stress, and can make fracture end have physiological stress to produce and conduction all the time, thereby avoided stress concentration and stress to pick up retaining.
Technical scheme of the present invention is as follows: intramedullary pin and screw at intramedullary nail with lock are formed on the basis, improve the intramedullary pin structural design, and the automatic control inching gear is set.Its intramedullary pin is made up of near-end nail body, far-end nail body and guiding latch.Near-end, far-end nail body is connected by its fine motion latch-up structure, and the fine motion lock is dynamically connected following several form can be arranged: 1. concaveconvex structure; 2. textured structure; 3. dots structure; 4. dentalation.The guiding latch inserts the two connection pin-and-hole and notch, and follows closely external cover with near-end and be located by connecting.When near-end, far-end nail body begins to connect combination, should keep leaving mobile space between far away, near-end nail body, carry out automatic control for fracture end and endwisely slip.Insert by the operating routine of intramedullary nail with lock in the long diaphysis of human body, far, near-end is fixed by screw and bone, far, the fine motion locking connection between near-end nail body can be with human muscle's contraction or heavy burden, make far away, near-end nail body slide mobile to the centre, its inching gear guarantees that fracture gap has the axial fine motion of 1-1.5 millimeter, make to exist physiological stress to stimulate and conduction in the early stage and whole fracture healing process of fracture end all the time, promote the rapid healing of fracture.
Using method: according to X line anterioposterior and lateral film the type and the stability of fracture are assessed before the art, to determine the fixed form of autocontrollable creep-moving intramedullary nail with lock.1. stable fracture: transverse fracture, spiral fracture, short oblique fracture, autocontrollable creep-moving intramedullary nail with lock is far away, the combination of near-end nail body is inserted human body by the operating routine of intramedullary nail with lock in the locking back for the first time, after using far away, the near-end of pinning bone fixation folding, make far away, near-end nail body spacing keep about 1 centimetre, postoperative causes autocontrollable creep-moving intramedullary nail with lock far-end, the overlapping gradually slip to the midline of near-end nail body with the contraction of muscle, guarantees that fracture has controlled axial fine motion.2. unstable fracture: syntripsis, long oblique fracture can not transmit load by key in early days, can make far-end, near-end syndeton in the inching gear of autocontrollable creep-moving intramedullary nail with lock overlapping fully, lock at last.Promptly do not use the controlled axial oligodynamics of autocontrollable creep-moving intramedullary nail with lock, it is used as general intramedullary nail with lock uses.3. loose type nonunion, stable because of fracture end, do not need bone grafting in the art, get through pulp cavity in the art after, undertaken by the nail principle of putting of stable fracture.4. atrophic type nonunion because of the fracture end instability, needs bone grafting in the art, get through pulp cavity in the art after, by unstable fracture put the nail principle carry out.
Autocontrollable creep-moving intramedullary nail with lock has not only been controlled fracture end and has been bent, turns round, cuts, revolved stress, and guarantees to have all the time on the key longitudinal axis physiological stress to stimulate and conduction.Add not in fracture end boring and operation, avoided stress concentration and stress to pick up retaining.Its closed nailing damage is little, the integrity of the Kazakhstan Fu Shi blood vessel in adequately protected survival nutrient artery and the bone.This apparatus operation technique is simple, and expense is low, is suitable for wide popularization and application.
Accompanying drawing is the structural representation of autocontrollable creep-moving intramedullary nail with lock
Introduce embodiments of the invention below in conjunction with accompanying drawing.
This autocontrollable creep-moving intramedullary nail with lock comprises intramedullary pin and screw (not indicating among the figure), and intramedullary pin is made up of near-end nail body (1), far-end nail body (2) and guiding latch (3).By the external tooth on the preceding face of cylinder of far-end nail body (2), the interior corresponding internal tooth of insertion near-end nail body (1) circular hole is connected and carries out the preliminary locking first time, and maintenance is far away, near-end is followed closely the gap that has between body about 1 centimetre; Near-end nail body is established pin-and-hole on (1) the one end face of cylinder, corresponding with the set notch of the far-end nail corresponding outer cylinder surface of body (2), insert guiding latch (3) in the pin-and-hole and enter the notch that far-end is followed closely body (2), guiding latch (3) is fixedlyed connected with near-end nail body (1) outer cylinder surface pin-and-hole.The autocontrollable creep-moving intramedullary nail with lock near-end is cylindrical, and far-end is a cloverleaf pattern, and the automatic control inching gear is positioned at that it is far away, the joint portion of near-end, automatically locks when making fracture gap surpass the 1-1.5 millimeter, and retainer shaft to fine motion within the specific limits.Fine motion locking connects also can adopt dots structure, i.e. it is to insert in the near-end nail body opening corresponding point-like by the spot-like projections on the anterior face of cylinder of far-end nail body to cave in and be connected that the near-end of intramedullary pin nail body, far-end fine motion locking connects; Or adopt textured structure, the i.e. near-end of intramedullary pin nail body, far-end fine motion locking to connect to be and insert in the near-end nail body opening corresponding textured by the textured projection on the anterior face of cylinder of far-end nail body and cave in and be connected; Or adopt convex-concave shape structure, the i.e. near-end of intramedullary pin nail body, far-end fine motion locking to connect to be and insert in the near-end nail body opening corresponding concavity by the convex projection on the anterior face of cylinder of far-end nail body and cave in and be connected etc.
Claims (7)
1. one kind is applied to that the orthopaedics therapy shaft fracture connects and fixed autocontrollable creep-moving intramedullary nail with lock, comprise intramedullary pin and screw, it is characterized in that, intramedullary pin is made up of near-end nail body, far-end nail body and guiding latch, near-end, far-end nail body are connected by its fine motion latch-up structure, and the guiding latch inserts connection pin-and-hole and the notch of the two.
2. autocontrollable creep-moving intramedullary nail with lock according to claim 1, it is characterized in that, near-end, far-end fine motion locking connection that intramedullary pin is followed closely body are to be connected by corresponding internal tooth in the external tooth insertion near-end nail body opening on the anterior face of cylinder of far-end nail body, its dentalation automatically locks when making fracture gap surpass the 1-1.5 millimeter, and retainer shaft to fine motion within the specific limits.
3. autocontrollable creep-moving intramedullary nail with lock according to claim 1 is characterized in that, near-end nail body is established pin-and-hole on the one end face of cylinder, answers the set notch of outer cylinder surface corresponding with far-end nail bulk phase.
4. autocontrollable creep-moving intramedullary nail with lock according to claim 1 is characterized in that, the guiding latch inserts the connection pin-and-hole and the notch of near-end, far-end nail body, and follows closely external cover with near-end and be located by connecting.
5. autocontrollable creep-moving intramedullary nail with lock according to claim 1 is characterized in that, near-end, far-end fine motion locking connection that intramedullary pin is followed closely body are to be caved in by corresponding point-like in the spot-like projections insertion near-end nail body opening on the anterior face of cylinder of far-end nail body to be connected.
6. autocontrollable creep-moving intramedullary nail with lock according to claim 1 is characterized in that, near-end, far-end fine motion locking connection that intramedullary pin is followed closely body are to be caved in by corresponding textured in the textured projection insertion near-end nail body opening on the anterior face of cylinder of far-end nail body to be connected.
7. autocontrollable creep-moving intramedullary nail with lock according to claim 1 is characterized in that, near-end, far-end fine motion locking connection that intramedullary pin is followed closely body are to be caved in by corresponding concavity in the convex projection insertion near-end nail body opening on the anterior face of cylinder of far-end nail body to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00114521 CN1123325C (en) | 2000-04-25 | 2000-04-25 | Autocontrollable creep-moving intramedullary nail with lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00114521 CN1123325C (en) | 2000-04-25 | 2000-04-25 | Autocontrollable creep-moving intramedullary nail with lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1270008A true CN1270008A (en) | 2000-10-18 |
| CN1123325C CN1123325C (en) | 2003-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00114521 Expired - Fee Related CN1123325C (en) | 2000-04-25 | 2000-04-25 | Autocontrollable creep-moving intramedullary nail with lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1123325C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108210038A (en) * | 2016-12-14 | 2018-06-29 | 创生医疗器械（中国）有限公司 | Intramedullary nail pinning mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386058C (en) * | 2006-03-07 | 2008-05-07 | 冀原 | Improvement of internal-fixed fracture elastic stress interlocking external pin |
-
2000
- 2000-04-25 CN CN 00114521 patent/CN1123325C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108210038A (en) * | 2016-12-14 | 2018-06-29 | 创生医疗器械（中国）有限公司 | Intramedullary nail pinning mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1123325C (en) | 2003-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN WEIMAN BIOLOGICAL MATERIAL CO., LTD. Free format text: FORMER OWNER: XU WEIZHOU Effective date: 20090717 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090717 Address after: Tianjin Huayuan Industrial Area Road No. 2 Haitai torch Pioneering Park B block, Room 401 Patentee after: Tianjin Weiman Biological Material Co., Ltd. Address before: First people's Hospital of Renmin East Road, Luohe, Henan Patentee before: Xu Weizhou |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031008 Termination date: 20190425 |