CN201022740Y - Tibia stress regulating type marrow nail with lock - Google Patents
Tibia stress regulating type marrow nail with lock Download PDFInfo
- Publication number
- CN201022740Y CN201022740Y CNU2007201437548U CN200720143754U CN201022740Y CN 201022740 Y CN201022740 Y CN 201022740Y CN U2007201437548 U CNU2007201437548 U CN U2007201437548U CN 200720143754 U CN200720143754 U CN 200720143754U CN 201022740 Y CN201022740 Y CN 201022740Y
- Authority
- CN
- China
- Prior art keywords
- nail
- closing
- nail body
- stress
- tibia
- 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.)
- Expired - Lifetime
Links
- 210000002303 tibia Anatomy 0.000 title claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 title description 2
- 230000004938 stress stimulation Effects 0.000 abstract description 4
- 206010043827 tibia fracture Diseases 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 35
- 230000035882 stress Effects 0.000 description 23
- 210000000988 bone and bone Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000004118 muscle contraction Effects 0.000 description 1
- 210000000963 osteoblast Anatomy 0.000 description 1
- 210000002997 osteoclast Anatomy 0.000 description 1
- 230000009894 physiological stress Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses an interlocking intra-medullary nail with adjusting tibia stress which comprises a nail body, a sleeve of nail and a screw. The nail is characterized in that the section closing to the end of the nail body is approximately a ladder. The nail body closing to the end is provided with a hole of pin. The end closing to the end is provided with a clamping tooth with external tooth. A circular hole is arranged on the corresponding position of the sleeve of nail with the hole of pin on the nail body closing to the end. The vertical direction of the nail body closing to the end is square. The closing end of the sleeve of nail is provided with an internal tooth and a clipping groove. The closing end of the nail body is connected by locating with the sleeve of nail by four ridges of the end of the nail body closing to the end being clamped into the clipping groove of the sleeve of nail closing to end. The interlocking intra-medullary nail with adjusting tibia stress of the utility model is used for the treatment of tibia fracture to effectively solve the contradiction between stress shielding and stress stimulation.
Description
Affiliated technical field
This utility model relates to a kind of surgical instruments, and particularly a kind of orthopaedics therapy fracture of tibia connects and fixed tibia stress regulation and control type intramedullary nail with lock.
Background technology
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, stress are picked up the retaining problem and are not solved." 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.
Because the tibia diameter is little, be used for the treatment of the necessary diameter reduction of intramedullary nail with lock of fracture of tibia, reduce to follow closely wall thickness, it is difficult especially with this problem of contradiction of stress stimulation that this makes solution stress pick up retaining.
Summary of the invention
The purpose of this utility model provide a kind of be applied to treat fracture of tibia can effectively solve the tibia stress regulation and control type intramedullary nail with lock that stress is picked up retaining and this contradiction of stress stimulation.
The technical solution of the utility model is as follows: a kind of tibia stress regulation and control type intramedullary nail with lock, comprise nail body, nail cover and screw, and it is characterized in that nail body near-end section approximate is trapezoidal, have pin-and-hole on the near-end nail body, proximal tips is provided with the clamping tooth of band external tooth; Nail puts with near-end nail relevant position, body institute expense hole and has circular hole, and near-end nail body vertically is square, and nail cover near-end is provided with internal tooth, and has draw-in groove, and the near-end of nail body is to be snapped in the nail cover near-end draw-in groove by four fins in near-end nail body termination to be located by connecting with the nail cover.
Above-mentioned near-end nail body institute expense hole is a slotted hole, wherein near-end nail body vertically also can be the band lug square.
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 stress regulation and control type intramedullary nail with lock.1. stable fracture: (transverse fracture, spiral fracture, short oblique fracture) stress regulation and control type intramedullary nail with lock nail body and nail are nested as being connected between the back apart from locking 8 millimeters the time, insert human body by the operating routine of intramedullary nail with lock then, use far away, the near-end of pinning bone fixation folding.Postoperative is under the control of " fine motion regulation and control latch-up structure ", fracture is far away, near-end moves to the fracture mid point with the contraction of muscle, when fracture gap during greater than 1.0 millimeters " fine motion regulation and control latch-up structure " automatically lock when regulating and control to make it to be 0.1 millimeter, make fracture end axially fine motion between 0.1～1.0 millimeter.2. unstable fracture: (syntripsis, long oblique fracture) can not transmit load by key in early days, make the nail body of stress regulation and control type intramedullary nail with lock be one with the nail cover, promptly follow closely body and nail and be nested and lock when not having spacing after being connected, 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.
Stress regulation and control type intramedullary nail with lock has been controlled fracture end and has been bent, turns round, cuts, revolved stress after fracture, early stage in union of fracture, and the local intermittent dynamic stress that is produced of its fracture stimulates, and causes a large amount of media or the factor to generate, for osteanagenesis provides condition; Middle and late stage in union of fracture, the nail body is nested with nail and makes fracture end have dynamic stress to produce and conduction all the time as being connected the set spacing in back, secondary power is provided for the metabolic activity of osteoblast, osteoclast etc., fracture is reconstructed the limit while healing moulding, quickened the union of fracture process.The intermittent dynamic stress that has that stress regulation and control type intramedullary nail with lock internal fixation is set up stimulates and the biomechanics environment that conducts, and makes fracture repair become the continuous dynamic process of " waterfall " formula, has solved stress preferably and has picked up the equilibrium problem of keeping off with the stress conduction.This apparatus operation technique is simple, and expense is low, is suitable for wide popularization and application.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that K of the present utility model is to sketch map.
Among the figure: symbol 1 is represented the tail plug, symbol 2 representative nail covers, and symbol 3 representative nail bodies, symbol 4 is represented pin.
The specific embodiment
Introduce embodiments of the invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of tibia stress regulation and control type intramedullary nail with lock comprises nail body, nail cover and screw, and nail body near-end section approximate is trapezoidal, has pin-and-hole on the near-end nail body, and proximal tips is provided with the clamping tooth of band external tooth; Nail puts with near-end nail relevant position, body institute expense hole and has circular hole, and near-end nail body vertically is square, and nail cover near-end is provided with internal tooth, and has draw-in groove, and the near-end of nail body is to be snapped in the nail cover near-end draw-in groove by four fins in near-end nail body termination to be located by connecting with the nail cover.
Above-mentioned near-end nail body institute expense hole is a slotted hole, wherein near-end nail body vertically also can be the band lug square.
Claims (3)
1. a tibia stress regulation and control type intramedullary nail with lock comprises nail body, nail cover and screw, it is characterized in that, nail body near-end section approximate is trapezoidal, has pin-and-hole on the near-end nail body, and proximal tips is provided with the clamping tooth of band external tooth; Nail puts with near-end nail relevant position, body institute expense hole and has circular hole, and near-end nail body vertically is square, and nail cover near-end is provided with internal tooth, and has draw-in groove, and the near-end of nail body is to be snapped in the nail cover near-end draw-in groove by four fins in near-end nail body termination to be located by connecting with the nail cover.
2. tibia stress regulation and control type intramedullary nail with lock according to claim 1 is characterized in that, it is slotted hole that described near-end is followed closely body institute expense hole.
3. tibia stress regulation and control type intramedullary nail with lock according to claim 1 is characterized in that, near-end nail body vertically be the band lug square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201437548U CN201022740Y (en) | 2007-04-05 | 2007-04-05 | Tibia stress regulating type marrow nail with lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201437548U CN201022740Y (en) | 2007-04-05 | 2007-04-05 | Tibia stress regulating type marrow nail with lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201022740Y true CN201022740Y (en) | 2008-02-20 |
Family
ID=39096597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201437548U Expired - Lifetime CN201022740Y (en) | 2007-04-05 | 2007-04-05 | Tibia stress regulating type marrow nail with lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201022740Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2582310A4 (en) * | 2010-06-18 | 2015-11-11 | Kettering University | An easily implantable and stable nail-fastener for skeletal fixation and method |
-
2007
- 2007-04-05 CN CNU2007201437548U patent/CN201022740Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2582310A4 (en) * | 2010-06-18 | 2015-11-11 | Kettering University | An easily implantable and stable nail-fastener for skeletal fixation and method |
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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: TIANJIN WEIMAN BIOLOGICAL MATERIAL CO., LTD. Free format text: FORMER OWNER: XU WEIZHOU Effective date: 20090424 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090424 Address after: Tianjin Huayuan Industrial Area Road No. 2 Haitai torch Pioneering Park B block, Room 401, zip code: 300384 Patentee after: Tianjin Weiman Biological Material Co., Ltd. Address before: The first people's Hospital of Renmin East Road, Henan, Luohe Province, China: 462000 Co-patentee before: Wang Honghe Patentee before: Xu Wei Zhou Co-patentee before: Wang Yuji |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080220 |