CN1027222C - External elastic fixator for fracture - Google Patents
External elastic fixator for fracture Download PDFInfo
- Publication number
- CN1027222C CN1027222C CN 90107918 CN90107918A CN1027222C CN 1027222 C CN1027222 C CN 1027222C CN 90107918 CN90107918 CN 90107918 CN 90107918 A CN90107918 A CN 90107918A CN 1027222 C CN1027222 C CN 1027222C
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- fracture
- joint
- ball
- needle
- fixator
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Abstract
The present invention provides an external elastic fixator for fracture, which is composed of support rods, bridge frames, a needle locking device and a bone needle. Two support rods and bridge frames on both sides are connected by a spherical universal joint. Each bridge frame is provided with a needle locking slot in which the T-shaped needle locking device, a needle locking device with a multi-hole needle bolt and a cantilever rod are arranged. An elastic needle locking device is arranged on the cantilever rod. With the structures and the connection of the members, various kinds of geometrically stable systems in space suitable for different bone fracture can be formed. Thus, the fracture site can be penetrated with a needle and positioned from any position and any direction for realizing elastic fixation. The external elastic fixator for fracture is mainly suitable for treating fracture of limbs and correcting the deformity of limbs.
Description
The present invention relates to a kind of medical apparatus and instruments for the treatment of fracture.
The fracture external fixator that uses both at home and abroad realizes fixedly that with strong steel body complete function replacement is guiding theory at present.Therefore, the external fixator complex structure of manufacturing, bulky, heavy, the pin footpath of used spicule is thick, and many with pin.From clinical practice, this method that replaces the green bone function fully with steelframe is easy to generate biotic stress and blocks effect, makes fracture site not have physiological stress to stimulate, and fracture is difficult to repair, bone fracture bone fracture disease such as also may cause that osteanabrosis, bone does not connect connect.And with spininess, destroy big to bone strength with the pin position with bodkin.
The objective of the invention is to overcome the weak point of above-mentioned external fixator, utilize Chinese and western medicine theory and biomechanical principle to develop a kind of external elastic fixator for fracture.This external fixator forms at the different space geometry invariable systems that fracture was suitable for by the different structure and the special connection of support bar, crane span structure and purl device etc.With a spot of spicule fracture site is carried out flexible fastening.
External elastic fixator for fracture is made up of space geometry fixed frame, purl device and spicule.The space geometry fixed frame is to be connected by coupling with two crane span structures by two support bars, and coupling is a sphere universal joint.There is screw thread at the two ends of support bar.Two crane span structures on two support bars and both sides connect by four sphere universal joints.The sphere universal joint is by ball-joint, the bracket-shaped one-tenth spherical pair of ball-joint.Ball-joint is made up of two hemisphere platforms, three parts of brake hoop.Brake hoop is cut into several sections, and its outer surface is dome shape.Two staggered relatively and intermediary brake hoop combinations of hemisphere platform constitute ball-joint.Leave the space in the middle of two opposed hemispherical platforms.Ball-joint can multi-facetedly rotate in the ball-joint carriage.The sphere universal joint is connected in the crane span structure two ends, and support bar is fastening with adjusting nut by the through hole both sides in the ball-joint.This structure both can make crane span structure move along the support bar direction, can crane span structure plane and support bar be had a certain degree by the sphere universal joint again, can make the multiple different locus of external fixator conversion according to different classification of fracture needs like this.When two adjusting nuts promoted hemisphere platform relative motion, the brake hoop spreading produced friction on the extruding ball-joint carriage, plays the stop fixation.The crane span structure side has the purl groove, and purl device or the cantilever lever of device in the purl groove can move on crane span structure along the purl groove.It can be semiorbicular that there are circular hole, the crane span structure of mounting spherical universal joint in the crane span structure two ends, also can be combined into closed-loop shaped.Can install T font purl device in the purl groove, porous pintle purl device and cantilever lever.Can install elasticity folder purl device on the cantilever lever.T font purl device is made up of the pane of rectangular slot and band screw rod.Have the perforation of a pricking with needle hole or connection on the side of rectangular slot and relevant position, pane side, through hole is arranged at the bottom of the rectangular slot, the screw rod on the pane passes the through hole at the bottom of the rectangular slot, pane and rectangular slot is formed be slidingly matched.With nut T font purl device is connected in the purl groove of crane span structure, screw nut the purl device is fixed on a certain position of crane span structure, simultaneously because the nut hanging screw makes corresponding pin hole or perforation dislocation in pane and the rectangular slot, produce shearing force, pin spicule.Porous pintle purl device is made up of porous pintle and pintle sleeve and nut.All have a pricking with needle hole on the corresponding position of pintle and sleeve, an end of pintle has screw thread.The pintle jacket casing is on pintle, and the threaded end of pintle is connected in the purl groove of crane span structure with nut.When screwing nut, nut and sleeve one end are pressed on the crane span structure, fixing purl device, the effect of hanging tight of nut is simultaneously moved pintle in sleeve, and corresponding pin hole misplaces on the pin hole on the pintle and the sleeve, generation shearing force pinning spicule.T font purl device and porous pintle purl device both can move in the purl groove along crane span structure, can rotate around the axis of screw rod itself again.Cantilever lever has smooth section and thread segment, and the two-stage nitration boundary has a shoulder, and the start-stop action is used.Thread segment places the purl groove to fix with nut, and when nut unscrewed, cantilever lever can move along crane span structure in the locking bar groove.When nut screwed, the shoulder of nut and cantilever lever grips crane span structure to be fixed.Shooting property folder purl device on the cantilever lever smooth section.Elasticity folder purl device is made up of elasticity folder, pintle and nut.Elasticity is clipped on the cantilever lever.Be equipped with through hole on the jig arm of elasticity folder, pintle is the screw rod that has pin hole, will be installed with the through hole of the pintle insertion jig arm of spicule, and the other end screws on nut, and when nut screws, but fixed bone spicule clamps the elasticity folder simultaneously, clamps cantilever lever.This purl device that is contained on the cantilever lever can make spicule that very big degree of freedom is arranged.Secondly at first, it can move along the purl groove on the crane span structure with cantilever lever,, can be clipped on the cantilever lever with elasticity and endwisely slips, and also can rotate around the cantilever lever axle, and in addition, pintle also can rotate around the axis of self.Cantilever lever can be straight-bar, curved bar or pole.Another characteristics of the present invention are exactly that to adopt light-weight aluminium alloy be material to main member.
External elastic fixator for fracture can be used for treating the fracture and the cacomelia at positions such as extremity to be corrected, and utilizes the conversion of the space invariance system of external elastic fixator for fracture, the location of realizing threading a needle from position, the orientation of any needs.Thread a needle in conjunction with manual reduction, how much and can adjust because the one-tenth angle that fracture causes, lateral displacement, axially displaced and reverse.This external elastic fixator for fracture is rational in infrastructure, volume is little, in light weight and adjustability is strong, it is wide to adapt to symptom, from clinical effectiveness, owing to be flexible fastening rather than function replacement, use limbs to carry out functional activity, making fracture face constantly be subjected to physiological stress stimulates, and union of fracture is rapid.
Fig. 1 external elastic fixator for fracture
The structure of Fig. 2 external elastic fixator for fracture
Device shown in the drawings is a kind of embodiment of the present invention.Further the present invention is illustrated below in conjunction with accompanying drawing.
Two support bars (3) are connected with half-bridge frame (1), annular crane span structure (2) respectively by four sphere universal joints (4), constitute the space geometry frame system, have arc purl groove on the half-bridge frame side, two ends have two circular holes, are used for attaching sphere universal joint.A short round bar is respectively arranged below half-bridge frame two ends, can connect elasticity folder purl device (7) on the short round bar.Annular crane span structure (2) is to be connected by two semi-circular crane span structures to combine, and all has arc purl groove in the side of two semi-circular crane span structures.There are two ends to have circular hole in two semi-circular crane span structures, are used for connecting the sphere universal joint.Purl groove on the crane span structure can be used to connect porous pintle purl device (5), cantilever lever (6) or T type purl device.There is screw thread at the two ends of support bar (3).The sphere universal joint is made up of ball-joint and ball-joint carriage (11), and ball-joint is made up of two hemisphere platforms (9), brake hoop (10).Brake hoop places in the middle of two hemisphere platforms staggered relatively.The brake hoop outer surface is dome shape, and the outer surface of two hemisphere platforms also is dome shape, and when two hemisphere platforms staggered relatively and the middle brake hoop that inserts and puts were combined into ball-joint, their outer surface was combined into sphere.The center of hemisphere platform is porose.Ball-joint carriage (11) is involuted by two boss platforms.On the boss platform concave spherical surface is arranged, two Internal Spherical Surface that involute and ball-joint coincide.At support bar, both sides are fastened in the circular hole of crane span structure one end with the two boss platforms that constitute the ball-joint carriage, fix with screw with ball joint boot.By two hemisphere platforms and the middle ball-joint that brake hoop constituted that inserts and puts, in the ball-joint carriage, can arbitrarily rotate.The both sides of two hemisphere platforms respectively are provided with an adjusting nut (8) on support bar, when two adjusting nuts are regulated in opposite directions, force two hemisphere platform relative motioies, thereby extruding brake hoop, because brake hoop is cut into several sections, with regard to spreading, is pressed on the inner surface of ball-joint carriage behind the pressurized, produce frictional force, play the braking fixation.When adjusting nut unclamped, support bar can drive ball-joint in the ball-joint carriage turns, realized the adjusting in each orientation of support bar.Crane span structure, support bar are all made of aluminium alloy in the present embodiment.
Claims (1)
1, a kind of external elastic fixator for fracture, constitute by space geometry fixed frame, Hooks coupling universal coupling, elasticity purl device and spicule, it is characterized in that said Hooks coupling universal coupling is a sphere universal joint, ball-joint is made up of two hemisphere platforms, brake hoops, and brake hoop is cut into several sections, and its outer surface is dome shape, two staggered relatively and intermediary brake hoop combinations of hemisphere platform, constitute ball-joint, leave space, ball-joint, the bracket-shaped one-tenth sphere of ball-joint in the middle of two opposed hemispherical platforms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107918 CN1027222C (en) | 1990-09-28 | 1990-09-28 | External elastic fixator for fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90107918 CN1027222C (en) | 1990-09-28 | 1990-09-28 | External elastic fixator for fracture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1060204A CN1060204A (en) | 1992-04-15 |
| CN1027222C true CN1027222C (en) | 1995-01-04 |
Family
ID=4880768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90107918 Expired - Fee Related CN1027222C (en) | 1990-09-28 | 1990-09-28 | External elastic fixator for fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027222C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6908544B2 (en) | 2001-12-25 | 2005-06-21 | China Petroleum & Chemical Corporation | Cracking catalyst comprising layered clays and a process for cracking hydrocarbon oils using the same |
| US6670490B1 (en) | 2002-12-23 | 2003-12-30 | E. I. Du Pont De Nemours And Company | Platinum-rhenium-tin catalyst for hydrogenation in aqueous solution |
| CN100566671C (en) * | 2007-11-29 | 2009-12-09 | 李昭中 | Fracture para-position machine |
| US8574232B1 (en) * | 2012-11-13 | 2013-11-05 | Texas Scottish Hospital for Children | External fixation connection rod for rapid and gradual adjustment |
| CN103445833B (en) * | 2013-09-06 | 2015-05-13 | 江苏广济医疗科技有限公司 | Shoulder joint dynamic and static combined regulation external fixator |
-
1990
- 1990-09-28 CN CN 90107918 patent/CN1027222C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1060204A (en) | 1992-04-15 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |