CN2840949Y

CN2840949Y - A kind of combination type zona vascuiosa membrane support of magnetic tape trailer hook

Info

Publication number: CN2840949Y
Application number: CNU2005200426015U
Authority: CN
Inventors: 赵珺; 左琦
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-17
Filing date: 2005-06-17
Publication date: 2006-11-29
Anticipated expiration: 2015-06-17

Abstract

This utility model relates to technical field of medical instruments, it is a kind of combination type zona vascuiosa membrane support of magnetic tape trailer hook, form by tubular membranous part and wire rack mount, tubular membranous part and wire rack mount are two discerptible molectrons, therefore the first inwall of available thinner carrier with membranous part implantable intravascular affected part, wire rack mount is implanted tubular membranous part inner chamber, both are combined into one again.Tubular membranous part tail end has pintle, if position skew during implantation can retract carrier by pintle with membranous part and implant once more in operation.Help accurate location, and prevented the hidden danger of displacement, can improve success rate of operation.This utility model can adopt thinner carrier to implant owing to be combination type, therefore not only can reduce damage, and both be applicable to the west ethnic group that blood vessel is thicker, also is applicable to east ethnic group and the shallow blood vessel of people's body surface that blood vessel is thinner.

Description

A kind of combination type zona vascuiosa membrane support of magnetic tape trailer hook

Technical field

This utility model relates to technical field of medical instruments, is a kind ofly can adjust the combination type zona vascuiosa membrane support that the magnetic tape trailer hook of implantation is reorientated in the position in art.

Background technology

Dissecting aneurysm is the more common disease of China.Pathological process is: on the basis of some pathological changes, arterial vascular inner membrance and middle film are impacted by blood flow tears a breach, and blood flow enters breach and expansion towards periphery between blood vessel wall, forms a false chamber in blood vessel wall, is called dissecting aneurysm.The final result of its development is that false chamber peplos can't bear the impact of blood flow and breaks suddenly, thereby causes patient's sudden death, thereby primary disease is a kind of very dangerous, disease that mortality rate is very high.The position that its breach produces can be at ascending aorta, aortic arch, descending aorta, ventral aorta, iliac artery etc.Traditional therapeutic modality is out under the breast extracorporeal circulation that excision comprises one section descending aorta of breach, is replaced into artificial blood vessel, and operation wound is very big, the risk height, hemorrhage many, complication is many, recovery is slow, misery is big.Aneurysm expansion occurs after being meant certain section arteries pathological changes, and along with the continuous impact of blood flow, finally also can break causes patient to die suddenly.Traditional Therapeutic Method also is out breast or opens abdomen with the excision of tumor body, the displacement artificial blood vessel, and operation risk and complication rate are equally quite high.After nineteen ninety, countries such as west begin to adopt the conduit interventional technique, avoid open chest surgery and the intravascular intracavity is sent into the special covered stnet of being made up of metal rack and rayon thin film (or directly adopting artificial blood vessel) and is isolated from outside the blood flow with the breach sealing or with aneurysm, thereby make false chamber of dissecting aneurysm or aneurysmal intracavity generation thrombosis, eliminated its disruptive danger, reached and opened breast, the same curative effect of abdominal, simultaneously can significantly reduce transfusion volume and complication, shorten recovery time.

The structure and the application principle of above-mentioned covered stnet are: the folding or braiding formation cylinder-shaped bracket of elastic metallic yarn, its inboard or the outside are connected in tubulose rayon thin film or artificial blood vessel by stitching or bonding mode, promptly form covered stnet.Will covered stnet be loaded in the carrier after the compression, the blood vessel by the distant place body surface is an approach, finally is transported to the vascular lesion position; After covered stnet breaks away from the compression of carrier, promptly expand into tubulose automatically and be fixed in the blood vessel of diseased region, diseased region is isolated from outside the blood flow, reach the purpose of treatment.

The domestic and international at present covered stnet of employed several models clinically, because wire rack mount and tubulose rayon thin film combine, therefore, the problem that this structure exists is that sectional area is bigger, must adopt thicker carrier to implant.Usually its wire rack mount is that Z-shaped folding [seeing China Patent No. 00218282.3 for details] or woven bracket loop constitute, there is quantity wiry to be generally about the 10-24 root on the cross section, taken big volume, after adding rayon, total volume is just bigger, the thicker carrier of can only packing into.Such utensil still can normal use for the thick west ethnic group of blood vessel, and Chinese less for buman body type, that blood vessel is thinner or east ethnic group, the blood vessel of the shallow table of human body particularly, because external caliber is thinner, thereby the case that the type utensil but can't be implanted or implantation but causes the tunica intima damage is reluctantly adopted in normal generation in clinical.For this reason, the design people had once designed a kind of combination type zona vascuiosa membrane support, it is the improvement to above-mentioned covered stnet, improvements mainly are that tubulose thin synthetic film (abbreviation membranous part) and wire rack mount (abbreviation support) are separated, become two independently assemblies, membranous part and support successively respectively with the carrier implantation, make up in blood vessel, thereby have reduced the diameter (number of patent application 200520039623.6) of carrier.Yet existing various zona vascuiosa membrane support, position, back and the incongruent situation of expection often appear during use implanting, displacement or location are inaccurate when promptly implanting, but adjust the position in case implant just can't move, unique measure of remedying is exactly to implant one again, this not only operates more loaded down with trivial details, has prolonged operating time, and causes waste.

Summary of the invention

This utility model provides a kind of can adjust the just combination type zona vascuiosa membrane support of the accurate localized magnetic tape trailer hook of energy of the disposable implantation of backing positions in art.It is the improvement to combinations thereof formula zona vascuiosa membrane support, key is, be provided with a metal pintle in tubular membranous part tail end position,, can stretch into snare by carrier immediately and hook pintle if find that the position is dissatisfied when implanting, membranous part is retracted carrier, implant once more after adjusting the position, thereby reach clinical pinpoint requirement, fundamentally solved and located hidden danger inaccurate or the support displacement, both improve success rate of operation, avoided unnecessary waste again.

Description of drawings

Fig. 1 is this utility model overall structure sketch map.

Fig. 2 is a wire armature structural representation of the present utility model.

Fig. 3 is a membranous part structural representation of the present utility model.

Fig. 4 is a supporting structure sketch map of the present utility model

The specific embodiment

Now in conjunction with the accompanying drawings and embodiments, this utility model is explained in detail.

This utility model is combined by wire rack mount and two discerptible molectrons of membranous part.Wherein membranous part is made up of wire armature 1 and tubulose thin synthetic film 2.Wire armature 1 usefulness histocompatibility and all good tinsel such as the nitinol alloy wire of elasticity are made, under naturalness, its shape as shown in Figure 2, two ends are by two circles 1.1 of wire rings coiled, the disk of two circles is parallel to each other, the acute angle angle of disk and middle placed in-line craspedodrome tinsel 1.2 is 45 to 60 degree, the folding position of a metal wire ring therein, tinsel is extended certain-length forward along craspedodrome tinsel 1.2 to turn back to the centre position of craspedodrome tinsel 1.2 again, cross with other end tinsel, the folding corner 1.3 of tinsel and tinsel two are locked by the miniature sleeve pipe of medical stainless steel in intermediary intersection 1.4 of craspedodrome portion.Tinsel extension forward overlaps a micro medical rustless steel sleeve pipe, is bent into pintle 1.5 after the locking.All miniature rustless steel sleeve pipes developing performance under X line perspective is good, can be used as the telltale mark in the operation.The shape of tubulose thin synthetic film 2, diameter and length and wire armature 1 coupling, two metal wire rings 1.1 are fixed at the both ends open place respectively.The above-mentioned tinsel of wire rack mount 3 usefulness forms cylindrical shape with Z-shaped folding mode continuous weaving, the internal diameter coupling of external diameter and membranous part, and length is slightly longer than membranous part.Implant the membranous part inner chamber during use, membranous part is played support fixation and shaping operation.This utility model need can be made into different specifications and models according to clinical.During application, implant earlier membranous part,, can stretch into snare from carrier immediately, hook pintle 1.5, membranous part is retracted carrier, adjust the position and implant once more in case find displacement, behind the location again at membranous part inner chamber implant frame.

Embodiment 1

Wire armature 1 adopts single nitinol alloy wire to make alloy filament diameter 0.25mm.Two ends tinsel circle 1.1 external diameter of projection on cross section is 34mm, and two disks are parallel, with the acute angle angle of the placed in-line craspedodrome tinsel 1.2 in centre be 60 degree, craspedodrome tinsel length is 100mm.Corner 1.3 that tinsel is folding and tinsel two ends are locked by the miniature sleeve pipe of medical stainless steel in intermediary intersection 1.4.Pintle 1.5 length 3-5mm, external diameter 1.5-2.5mm.The tubulose thin synthetic film forms with the macromolecule polyester braiding, its shape, diameter and length and wire armature 1 coupling, and the oblique opening in two ends is individually fixed on two circles 1.1 of wire armature 1, promptly forms membranous part of the present utility model.The nitinol alloy wire that wire rack mount 3 usefulness histocompatibilitys and elasticity are all good is made diameter 0.38mm.It is folded by Z-shaped back and forth along cylindric metal die surface, each folding length of side is 15mm in the projected length of the longitudinal axis, about 40 degree of angle folding, the corner of angle folding slightly is blunt arc in case damaged tissue, repeat folding 12 times, form up and down and promptly form a circle behind each 6 angle folding, form bracket loop 3.1, diameter is 38mm, and tinsel intersects lap and locks with micro medical rustless steel sleeve pipe 3.2.Again tinsel is extended certain distance along the mould y direction, form connecting portion 3.3 with next bracket loop.Continue second circle of braided support as stated above, form a circle back crossing overlapping wiry still with above-mentioned micro medical rustless steel sleeve pipe locking, weave the 3rd circle, the 4th circle successively ..., until 8 circles, be the fit shape between the bracket loop, mutual fit 20% length of adjacent Z-shaped bracket loop.Final formation cylindrical metal silk support 3 straight shape, the about 120mm of length.

Claims

1. the combination type zona vascuiosa membrane support of a magnetic tape trailer hook, form by membranous part and wire rack mount, membranous part and wire rack mount are two discerptible molectrons, wherein membranous part is made up of wire armature (1) and tubulose thin synthetic film (2), wire armature (1) two ends are two circles (1.1) by the wire rings coiled, the disk of two circles is parallel to each other, the acute angle angle of disk and middle placed in-line tinsel (1.2) is the 45-60 degree, and the corner (1.3) that tinsel is folding and tinsel two are locked by the miniature sleeve pipe of medical stainless steel in intermediary intersection of craspedodrome portion (1.4); Shape, diameter and the length of tubulose thin synthetic film (2) and wire armature (1) coupling, two metal wire rings (1.1) are fixed at the both ends open place respectively; Wire rack mount (3) becomes cylindrical shape by tinsel with Z-shaped folding mode continuous weaving, external diameter and membranous part coupling, and its length is slightly long than membranous part, and the wire armature (1) that it is characterized in that membranous part is provided with pintle (1.5) along an end of craspedodrome tinsel (1.2).

2. by the combination type zona vascuiosa membrane support of the described magnetic tape trailer hook of claim 1, it is characterized in that said pintle (1.5) is to be overlapped with rustless steel sleeve pipe locking back bending by the tinsel extension of wire armature (1) to form.