CN202198654U - Novel driven-type bow-tooth-like shape memory connector - Google Patents
Novel driven-type bow-tooth-like shape memory connector Download PDFInfo
- Publication number
- CN202198654U CN202198654U CN2011200806842U CN201120080684U CN202198654U CN 202198654 U CN202198654 U CN 202198654U CN 2011200806842 U CN2011200806842 U CN 2011200806842U CN 201120080684 U CN201120080684 U CN 201120080684U CN 202198654 U CN202198654 U CN 202198654U
- Authority
- CN
- China
- Prior art keywords
- bow
- arm
- tooth
- parts
- shape memory
- 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 - Fee Related
Links
Images
Landscapes
- Prostheses (AREA)
Abstract
The utility model relates to a novel driven-type bow-tooth-like shape memory connector. The shape memory connector comprises a bow part, arm parts and a tooth part, and is characterized in that one arm part is respectively connected at two ends of the bow part, the two arm parts are positioned at the same side of the bow part, a sharp tooth is respectively arranged on the top end of each of the arm parts, and a plurality of barbs are arranged on the inside surfaces of the joints of the arm parts and the bow part; the barbs on the arm parts face the bow part; the bow part is in a convex arch shape or an indent arch shape; and the sharp teeth positioned on the front top ends of the arm parts are triangular pyramids. The novel driven-type bow-tooth-like shape memory connector is applied to cancellous bone parts of juxta articular parts, pelvis and acetabulum, and can be directly driven into symmetrical parts at two sides of a fractured bone end without drilling holes, thus being convenient for operation; and after being driven into the parts, the connector has metallographic change under the driving of body temperature, and the two arm parts can generate continuous memory restoring force. The novel driven-type bow-tooth-like shape memory connector is suitable for internal fixation of fracture of the irregular cancellous bones such as fractures on pelvis, acetabulum and the juxta articular part as well as joint fusion.
Description
Technical field
This utility model relates to a kind of irregular cancellous bone fracture that is used for, like the holder of pelvis, acetabular bone, nearly joint portion syntripsis and joint fusion.
Background technology
At present; The internal fixation device that is used to treat nearly joint portion, pelvis, acetabular bone comminuted fracture has polytype; Pluses and minuses are respectively arranged: (1) needs plastotype when reconstruction plate is laid, and peels off extensively, and steel plate is difficult to match with the topography radian; Comminuted fracture bone interblock is difficult for reaching effective pressurization, and operating time is long, hemorrhage many.Compression steel plate is a passivity, disposable, and static pressurization can not produce persistence and become strength of calligraphic strokes value; (2) NiTi pressurization pressed nail fixed teeth is the garden cylindricality, and no anti-back pin structure moves back nail easily during the fracture site abnormal movement; (3) bow odontoid memory bone connector can produce effective pressurization, and there is the agnail of anti-back nail crown portion inboard; Fixed effect is reliable, but needs in the use to measure and boring, and operating time is still longer; When internal fixation takes out,, take out difficulty relatively because of agnail is positioned at tooth portion far-end.Therefore demand developing novel bone fracture device urgently, to solve the problem that exists at present.
Summary of the invention
The purpose of this utility model is to solve the problem that existing internal fixation device complicated operation, operating time in spongy bone position comminuted fracture fixation procedure such as nearly joint portion, pelvis, acetabular bone are long, can not effectively pressurize or take out difficulty.A kind of novel type bow odontoid memory bone connector of squeezing into is provided.The novel type bow odontoid memory bone connector of squeezing into of this utility model design; Comprise bow portion, arm, tooth portion; It is characterized in that: the two ends in bow portion are connected with an arm separately; Two arms are positioned at the same side of bow portion, are tooth portion on the top of arm, and the medial surface of arm and bow portion connection is provided with some agnails.It is characterized in that: the agnail on arm is towards bow portion.It is characterized in that: bow portion is the curved arch of an evagination.It is characterized in that: bow portion is the arc of an indent, it is characterized in that: be positioned at that vertical tooth portion is triangular cone before the arm.The utility model has the advantages that pointed tooth portion is sharp keen, be triangular cone, be convenient to squeeze into; Have agnail on the arm posterior medial face near bow portion, both prevented to move back nail, do not make again and extract too difficulty; Behind the low temperature flow, insert special bow odontoid memory bone connector driver, can directly squeeze into the symmetry position of bone stump both sides in the spongiosa osseous part of nearly joint portion and pelvis, acetabular bone, need not hole; Squeeze into back body temperature and drive the variation of this device metallographic, both arms portion can produce persistent memory property restoring force, produces persistent pressure at the bone interblock.This holder combines the advantage of multiple internal fixation, and is easy to operate for spongiosa osseous part comminuted fracture such as nearly joint portion, pelvis, acetabular bone provide a kind of fixing simple, can effectively pressurize at the bone interblock, can prevent the inner fixer of stopping nail after fixing.
Description of drawings
The bow portion of Fig. 1 this utility model property squeezed into bow odontoid memory bone connector is the structural upright sketch map of the curved arch of an evagination.
The bow portion of Fig. 2 this utility model property squeezed into bow odontoid memory bone connector is the arcual structural upright sketch map of an indent.
Fig. 3 is the flow sketch map of this utility model property squeezed into bow odontoid memory bone connector.
Dotted line is 33 ± 2 ℃ a shape, solid line be 0 ~ 5 ℃ by the shape of flow.
This utility model is elaborated with implementing below in conjunction with accompanying drawing.
The specific embodiment
Wherein material is nickeliferous 50～53%, and all the other are the organic memory material sheet material of titanium, have good histocompatibility and shape memory function, sheet metal thickness 1
～4mm.It is the used material of orthopaedics internal fixation commonly used at present.Its made equipment is dissected with the spongiosa osseous part of nearly joint portion, pelvis, acetabular bone and is consistent with mechanics feature, and this utility model divides the forward bow and oppositely bends two kinds, is oriented to list, 33 ± 2 ℃ of recovery temperatures.
The tip of pointed tooth portion is sharp keen triangular cone, can directly squeeze into spongy bone, with bow portion bonded arm inboard the agnail of anti-back nail is arranged; Behind the low temperature flow, insert special-purpose bow odontoid note bone fracture device driver, after fracture end resets; Can directly beat the both sides of fracture line, body temperature drives this device metallographic to be changed, and produces the memory restoring force; Arm, bow portion are coordinated each other, accomplish the press fit that adds to fracture site.
The product that can produce various different sizes of this utility model, data are following:
Bow type just: the length 18-48mm of bow portion, the external diameter 10 of bow portion
～40mm, the internal diameter 7 of bow portion
～37mm, the length 8 of arm
～25mm, angle is 80 ° in the bow arm
～105 °, tooth portion spacing 10
～40mm, the quantity of agnail is 3
～4 pieces, the height of agnail is 0.5
～1.0mm the agnail spacing is 1mm.
Anti-bow type: the length 18 of bow portion
～48mm, the external diameter 10 of bow portion
～40mm, the internal diameter 7 of bow portion
～37mm, the length 10 of arm
～25mm, angle is 60 ° in the bow arm
～70 °, tooth portion spacing 10
～40mm, the quantity of agnail is 3
～4 pieces, the height of agnail is 0.5
～1.0mm the agnail spacing is 1mm.
When this utility model uses, select approach, limited exposure fracture site, anatomical reduction is selected fixing point in the bone stump both sides, this utility model of flow is inserted squeeze into apparatus, squeezes into fracture end, 40
～50 ℃ of normal saline flushings, arm inwardly shrinks, and fracture site is dissected the position memory add press fit.
This utility model has following positive effect: 1. this utility model type and spec is complete, is applicable to the fixing of spongy bone position comminuted fracture such as the nearly joint portion of extremity, pelvis, acetabular bone.
2. this utility model tooth portion is sharp keen, and is triangular in shape, behind the low temperature flow; Insert special bow odontoid memory bone connector driver; In the spongiosa osseous part of nearly joint portion and pelvis, acetabular bone, can directly squeeze into the symmetry position of bone stump both sides, need not hole; Can obviously shorten operation time, reduce hemorrhage.
3. metallographic changed after this utility model was squeezed into, and both arms portion can produce persistent memory property restoring force, produced persistent pressure at the bone interblock, and the arm inboard that links to each other with bow portion has agnail, has both prevented to move back nail, did not make again to extract too difficulty.
Claims (5)
1. the novel type bow odontoid memory bone connector of squeezing into; Comprise bow portion, arm, tooth portion; It is characterized in that: the two ends in bow portion are connected with an arm separately; Two arms are positioned at the same side of bow portion, are tooth portion on the top of arm, and the medial surface of arm and bow portion connection is provided with some agnails.
2. by the described novel type bow odontoid memory bone connector of squeezing into of claim 1, it is characterized in that: the agnail on arm is towards bow portion.
3. by the described novel type bow odontoid memory bone connector of squeezing into of claim 1, it is characterized in that: bow portion is the curved arch of an evagination.
4. by the described novel type bow odontoid memory bone connector of squeezing into of claim 1, it is characterized in that: bow portion is the arc of an indent.
5. by the described novel type bow odontoid memory bone connector of squeezing into of claim 1, it is characterized in that: be positioned at that vertical tooth portion is triangular cone before the arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200806842U CN202198654U (en) | 2011-03-24 | 2011-03-24 | Novel driven-type bow-tooth-like shape memory connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200806842U CN202198654U (en) | 2011-03-24 | 2011-03-24 | Novel driven-type bow-tooth-like shape memory connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202198654U true CN202198654U (en) | 2012-04-25 |
Family
ID=45962797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200806842U Expired - Fee Related CN202198654U (en) | 2011-03-24 | 2011-03-24 | Novel driven-type bow-tooth-like shape memory connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202198654U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102727289A (en) * | 2012-07-16 | 2012-10-17 | 徐永清 | Scaphoid fracture fixer |
| CN106264694A (en) * | 2016-10-18 | 2017-01-04 | 熊鹰 | Claw annular pressurization Patella reset fixing arrangement |
| CN108771562A (en) * | 2018-06-01 | 2018-11-09 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Small sclerite fixes U-shaped nail |
-
2011
- 2011-03-24 CN CN2011200806842U patent/CN202198654U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102727289A (en) * | 2012-07-16 | 2012-10-17 | 徐永清 | Scaphoid fracture fixer |
| CN102727289B (en) * | 2012-07-16 | 2014-12-03 | 徐永清 | Scaphoid fracture fixer |
| CN106264694A (en) * | 2016-10-18 | 2017-01-04 | 熊鹰 | Claw annular pressurization Patella reset fixing arrangement |
| CN106264694B (en) * | 2016-10-18 | 2024-04-19 | 熊鹰 | Claw type annular pressurizing patella resetting fixing device |
| CN108771562A (en) * | 2018-06-01 | 2018-11-09 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Small sclerite fixes U-shaped nail |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104936541B (en) | Automatically the implant for extending | |
| CN202198654U (en) | Novel driven-type bow-tooth-like shape memory connector | |
| EP2630923A3 (en) | Hemostatic clipping devices and methods | |
| CN103445888B (en) | Externally clamping fixed high-functionality artificial wrist joint prosthesis device | |
| KR101445232B1 (en) | Orthopaedic bone plate | |
| CN205569052U (en) | Hinge combination formula shoulder peak, collar -bone dissection board | |
| CN202211744U (en) | Adjustable 'groined' memory alloy patella steel plate | |
| CN102319110A (en) | Adjustable memory alloy patella steel plate in shape like Chinese character 'jing' | |
| CN106264694B (en) | Claw type annular pressurizing patella resetting fixing device | |
| CN203576616U (en) | Proximal femur locking and compressing plate | |
| CN213406448U (en) | Bone cement scraper | |
| CN201912271U (en) | Concealed intelligent self-locking femoral head handle | |
| CN204600601U (en) | A kind of cartilage point-like reduction forceps | |
| CN205107862U (en) | Anatomical form thighbone near -end locking pressurizing prevents moving back coaptation board | |
| CN206151563U (en) | Butt joint of medical head of femur adds pressing tongs | |
| JP2014064921A (en) | Anchor insertion instrument | |
| CN203468728U (en) | Bone cement pushing-injection device | |
| CN209644981U (en) | Wire-threading device | |
| CN210541941U (en) | High-flexibility bionic total-finger joint replacement part | |
| CN113558686A (en) | Clamping and drawing instrument | |
| CN209518932U (en) | Posterior cruciate ligament of knee protective device | |
| CN208892755U (en) | Tibial insertion of posterior cruciate ligament tunnel guider | |
| CN208659513U (en) | Electroresponse polymer shape memory elastic connecting bone object | |
| CN201389074Y (en) | Shape memory pressing tension screw | |
| CN102908182B (en) | A kind of Nickel-titanium shape memory alloy patellar concentrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20130324 |