CN103494637B - Encircle locking bone fracture plate - Google Patents
Encircle locking bone fracture plate Download PDFInfo
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- CN103494637B CN103494637B CN201310389284.3A CN201310389284A CN103494637B CN 103494637 B CN103494637 B CN 103494637B CN 201310389284 A CN201310389284 A CN 201310389284A CN 103494637 B CN103494637 B CN 103494637B
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- 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
- A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
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Abstract
Encircle locking bone fracture plate, comprise the nearly section plate corresponding to the nearly section of fracture and the section plate far away corresponding to fracture section far away, described nearly section plate and the junction of section plate far away are the physiology anterior arch that 4 ° of arcs protrude to front arc to adapt to femoral shaft; The front of described section plate far away is provided with screw hole, and lock screw runs through femur both sides cortex by described screw hole and is fixed fracture section far away; The front of described nearly section plate has horizontal groove, and the cross section of described groove is super semicircle; Clip hook connects crotch by straightway and forms, described straightway is located in described groove, the free end of described straightway is provided with screw thread and connects a nut, described nut is resisted against the side of described nearly section plate, described crotch encircles the nearly section of fracture with semi-ring form, and the end of described crotch is crossed over femoral shaft center line and blocked backbone.
Description
Technical field
The invention belongs to a kind of inner fixing device being applied to artificial hip joint femoral Periprosthetic fracture, be particularly useful for Vancouver B1 type fracture.
Background technology
Replacement of Hip Joint efficiently solves the hip joint illness in late period of old people, but one of its common complication---Periprosthetic Fracture After Total Hip Arthroplasty is more and more common, the Vancouver classification method for Periprosthetic Fracture After Total Hip Arthroplasty applies maximum sorting techniques in the world at present.Fracture is divided into A, B, C three types according to fracture and the position relationship of femoral prosthesis by it, and wherein A type and C type have the therapeutic scheme of standard, reliable results.Vancouver Type B fracture refer to be positioned at femoral prosthesis shank around or the fracture of shaft of femur at most advanced and sophisticated contiguous position.Situation according to prosthetic loosening and bone loss divides again 3 types, all there is prosthetic loosening in Vancouver B2, B3 type, wherein Vancouver B3 type remains the situation at bone loss, the process of Vancouver B2, B3 type fracture is without obviously having different views, and application lengthening prosthese is tied up in conjunction with multiply wire rope and can be obtained good solution.Vancouver B1 type fracture is usually located at the most advanced and sophisticated and contiguous level of femoral stem, and in horizontal shape, short oblique or pulverize shape, loosening does not appear in the femoral prosthesis of implantation, processes the most thorny.Protected because the nearly section of femoral bone cavitas medullaris has prosthesis handle filling, femoral stem is most advanced and sophisticated to be far non-filling part, so the most advanced and sophisticated position of femoral stem becomes both mechanics separations, very easily forms fracture at this after suffering external force.Therefore, Vancouver B1 type fracture incidence rate in all Periprosthetic Fracture After Total Hip Arthroplasties is the highest.Due to prosthese non-loosening, firm with synosteosis, be difficult to take out.
Due to existence and the senile osteoporosis of nearly section marrow intraluminal prosthesis of fracturing, Vancouver-B1 type fracture processes quite thorny clinically, there is no the therapeutic scheme of standard at present.Internal fixation method is a lot, and as used steel plate, screw internal fixtion, use fracture with memory alloy embrace fixator internal fixtion, column cortical bone support is in conjunction with steel wire wirerope cerclage.Clinical practice uses result poor, general internal fixtion insufficient strength, and patient cannot early ambulation, and the ratio of refracture and re-treatm ent is very high.
1. steel plate screw method: because have prosthese to exist in the nearly section pulp cavity of fracture, screw can only fix side cortex, and constant intensity is not enough, if associating wirerope is tied up can improve its constant intensity, but still has higher mortality and complex operation.
2. fracture with memory alloy embrace fixator method: range of exposure of 1. fracturing is comparatively wide, and operation wound is larger; 2. the constant intensity of memorial alloy does not reach Fracture of femur and fixes required intensity; 3. periosteum stripping scope is wide, easily causes nonunion; 4. fracture with memory alloy embrace fixator is not necessarily mated with the anatomic form of fracture.
3. column cortical bone support is in conjunction with steel wire wirerope cerclage: constant intensity is not enough, and bed rest time is longer.
Summary of the invention
For overcoming the large shortcoming of prior art constant intensity deficiency, operating difficulties, tissue injury, the present invention proposes a kind of mechanical fixation principle adopting the nearly section of section far away locking associating to encircle, nearly section encircles the method adopting combination type hook plate padlock, the prosthese of can obtain enough internal fixtion intensity, fracturing in nearly section pulp cavity exists fixing without prejudice, periosteum stripping scope can be reduced again, alleviate the blade plate of operation wound, meet the requirement of patient's out-of-bed activity.
Technical scheme of the present invention is:
Encircle locking bone fracture plate, it is characterized in that: comprise the nearly section plate corresponding to the nearly section of fracture and the section plate far away corresponding to fracture section far away, described nearly section plate and the junction of section plate far away are the physiology anterior arch that 4 ° of arcs protrude to front arc to adapt to femoral shaft;
The front of described section plate far away is provided with screw hole, and lock screw runs through femur both sides cortex by described screw hole and is fixed fracture section far away;
The front of described nearly section plate has horizontal groove, and the cross section of described groove is super semicircle; Clip hook connects crotch by straightway and forms, described straightway is located in described groove, the free end of described straightway is provided with screw thread and connects a nut, described nut is resisted against the side of described nearly section plate, described crotch encircles the nearly section of fracture with semi-ring form, and the end of described crotch is crossed over femoral shaft center line and blocked backbone.
Further, adjacent clip hook is oppositely arranged.
Further, described screw hole departs from the center of described section plate far away.
Preferably, described clip hook has 7 pieces, and described screw hole has 4.
Advantage of the present invention is
1, internal fixtion intensity is high;
2, simple to operate;
3, the individual variation of femur anatomic form can be adapted to;
4, reduce periosteum stripping scope, alleviate operation wound.
Accompanying drawing explanation
Fig. 1 a is the side view of using state of the present invention
Fig. 1 b is the front view of using state of the present invention
Fig. 1 c is the side view of using state of the present invention, the side relative with Fig. 1 a
Fig. 2 a is assembling schematic diagram of the present invention
Fig. 2 b is the another side of assembling schematic diagram of the present invention
Fig. 2 c is the schematic diagram after assembling of the present invention completes
Fig. 2 d is the opposite side of the schematic diagram after assembling of the present invention completes
Fig. 3 is the generalized section of clip hook locking.
Fig. 4 is the generalized section of lock screw locking.
Detailed description of the invention
With reference to accompanying drawing:
Encircle locking bone fracture plate 1, it is characterized in that: comprise the nearly section plate 11 corresponding to the nearly section of fracture and the section plate 12 far away corresponding to fracture section far away, described nearly section plate 11 and the junction of section plate 12 far away are the physiology anterior arch that 4 ° of arcs protrude to front arc to adapt to femoral shaft;
The front of described section plate 12 far away is provided with screw hole 14, and lock screw 3 runs through femur both sides cortex by described screw hole 14 and is fixed fracture section far away;
The front of described nearly section plate 11 has horizontal groove 13, and the cross section of described groove 13 is super semicircle; Clip hook 2 connects crotch 22 by straightway 21 and forms, described straightway 21 is located in described groove 13, the free end 211 of described straightway 21 is provided with screw thread and connects a nut 4, described nut 4 is resisted against the side of described nearly section plate 11, described crotch 22 encircles the nearly section of fracture with semi-ring form, and the end of described crotch 22 is crossed over femoral shaft center line and blocked backbone.
Adjacent clip hook is oppositely arranged.Described screw hole 14 departs from the center of described section plate 12 far away.
Preferably, described clip hook 2 has 7 pieces, and described screw hole 14 has 4.
The present invention includes one piece of zone line is that the blade plate of 4 ° of arcs is to adapt to the physiology anterior arch of femoral shaft to front arc, its distally arranges 4 screw hole be equally spaced, screw hole is partial center distribution, match with 4 pieces of lock screw, run through femur both sides cortex to be fixed fracture section far away, nearside arranges 7 roads and is parallel to each other and the groove of the transverse direction of equidistant arrangement, and the cross section shapes of groove, in super semicircle, lists in the upper surface of blade plate partially.7 pieces of clip hooks can pass through tunnel, and appear in blade plate upper surface portion, but can not deviate from escape from blade plate upper surface.Shape that clip hook is designed to " umbrella handle ", matches with the groove of walking crosswise of blade plate upper surface, and one end encircles the nearly section of fracture with semi-ring form, and that inserts blade plate walks crosswise groove, and the other end has screw thread, can take out and hug hook, use nut check.Because the femoral shaft diameter of varying level is variant, by measuring the femoral shaft of trench bottom to respective horizontal to lateral extent, select the clip hook (height of clip hook refers to the vertical dimension of its cross bar and arc tail end) of proper height, the arc tail end design of clip hook upwarps slightly, femoral shaft center line can be crossed over and block backbone, 7 pieces of clip hooks successively mutually crossed loops holding-solid surely to fracture nearly section, do not affect by the prosthesis handle in the nearly section pulp cavity of fracture, if the latch hook of recent side cannot mate with femur, wirerope can be used instead and tie up fixing through groove.Blade plate upper face center has the baby elephant nostril of 2 spacing 15mm, is convenient to cross steel wire bundle and fixes bone-grafting material.
The artificial hip joint femoral shaft length of Primary replacement is comparatively constant, general in 12 ~ 15cm scope, Vancouver B1 type fracture is usually located at the most advanced and sophisticated and contiguous level of femoral stem, therefore blade plate Design of length is easily determined, the blade plate that can prepare different length is for you to choose, groove on it and the number of screw hole also can correspondingly increase, and the height of clip hook increases progressively, for selection of clinical with the differential of 1mm.
Orientation of the present invention statement adopts the direction of medically human body to state.Take cardia as mark, being " nearside " near heart side, is " distally " away from heart side.With human body median line for mark, point left and right sides.The same side to be " inner side " near median line, is then " outside " away from median line.Health veutro direction is " front side ", and health dorsal part direction is " rear side ".Blade plate is " upper surface " away from surface of bone side, is " lower surface " near surface of bone side.
Technical conceive of the present invention is: the femoral prosthesis handle length of artificial hip joint Primary replacement is more constant, the position that Vancouver B1 type fracture occurs relatively fixing (femoral stem tip is contiguous), and the cross section of femoral shaft is close to circular, prosthesis handle is had to exist in the nearly section pulp cavity of Fracture of femur, cannot run through fixing with screw, the mode adopting intersection to encircle locking can obtain good constant intensity.Fracture of femur section far away still adopts traditional locking bone fracture plate, screw methods of internal fixation.The present invention can be made to be applicable to different crowds and femur form by the concrete size of adjustment blade plate, clip hook number, be formed " serial blade plate ".
Claims (4)
1. encircle locking bone fracture plate, it is characterized in that: comprise the nearly section plate corresponding to the nearly section of fracture and the section plate far away corresponding to fracture section far away, described nearly section plate and the junction of section plate far away are the physiology anterior arch that 4 ° of arcs protrude to front arc to adapt to femoral shaft;
The front of described section plate far away is provided with screw hole, and lock screw runs through femur both sides cortex by described screw hole and is fixed fracture section far away;
The front of described nearly section plate has horizontal groove, and the cross section of described groove is super semicircle; Clip hook connects crotch by straightway and forms, described straightway is located in described groove, the free end of described straightway is provided with screw thread and connects a nut, described nut is resisted against the side of described nearly section plate, described crotch encircles the nearly section of fracture with semi-ring form, and the end of described crotch is crossed over femoral shaft center line and blocked backbone.
2. blade plate as claimed in claim 1, is characterized in that: adjacent clip hook is oppositely arranged.
3. blade plate as claimed in claim 1 or 2, is characterized in that: described screw hole departs from the center of described section plate far away.
4. blade plate as claimed in claim 3, it is characterized in that: described clip hook has 7 pieces, described screw hole has 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389284.3A CN103494637B (en) | 2013-08-30 | 2013-08-30 | Encircle locking bone fracture plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389284.3A CN103494637B (en) | 2013-08-30 | 2013-08-30 | Encircle locking bone fracture plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103494637A CN103494637A (en) | 2014-01-08 |
| CN103494637B true CN103494637B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310389284.3A Active CN103494637B (en) | 2013-08-30 | 2013-08-30 | Encircle locking bone fracture plate |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758038B (en) * | 2015-04-08 | 2017-09-26 | 赵全明 | A kind of assembly type memory alloy plate osteosynthesis |
| CN104783882B (en) * | 2015-04-08 | 2018-12-28 | 无锡市人民医院 | A kind of assembly type memory alloy plate osteosynthesis |
| CN106937882B (en) * | 2017-04-21 | 2023-11-24 | 廊坊市人民医院 | Bone fracture plate with titanium cable and auxiliary positioning device |
| CN108042193B (en) * | 2018-01-25 | 2024-03-15 | 宁波市第六医院 | Femur double-side positioning steel plate |
| CN108186098B (en) * | 2018-01-25 | 2024-03-15 | 宁波市第六医院 | Femur double-side positioning steel plate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317822Y (en) * | 1997-12-15 | 1999-05-12 | 兰州记忆合金有限公司 | Split device for setting of fracture |
| US20060276896A1 (en) * | 2005-06-02 | 2006-12-07 | Medicinelodge, Inc. | Bone implants with integrated line locks |
| CN102100579B (en) * | 2011-04-01 | 2012-06-27 | 苏州奥芮济医疗科技有限公司 | In vivo degradable and absorbable metal encirclement device for bone fracture internal fixation |
| CN102415913A (en) * | 2011-06-09 | 2012-04-18 | 马丽昕 | Femoral shaft fracture internally fixing instrument |
| CN102940522A (en) * | 2012-11-07 | 2013-02-27 | 江苏百得医疗器械有限公司 | Encircling bone fracture plate |
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2013
- 2013-08-30 CN CN201310389284.3A patent/CN103494637B/en active Active
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| CN103494637A (en) | 2014-01-08 |
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