CN201333254Y

CN201333254Y - Medical internal-support hollow tubular balloon catheter

Info

Publication number: CN201333254Y
Application number: CNU2009200929224U
Authority: CN
Inventors: 王宏飞; 王大伟; 赵文光; 聂知宜
Original assignee: 王宏飞
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2009-10-28
Anticipated expiration: 2019-01-21

Abstract

The utility model relates to a medical internal-support hollow tubular balloon catheter which comprises a catheter body, a tubular balloon, a filling pipe connected with the tubular balloon, and a jacket sleeved on the catheter body. The medical internal-support hollow tubular balloon catheter is characterized in that more than two sliding nodes are formed at the front end of the jacket, N supporting rods are uniformly hinged on the circumference of the front end of the first sliding node, the lateral surfaces of M supporting sheets are hinged to form an inner wall which takes a circular shape after unfolding, and the sliding nodes and the supporting rods form an umbrella-shaped support for the circular inner wall. The medical internal-support hollow tubular balloon catheter allows a blood flow of more than 50% of the original blood flow perfusion volume to pass through a supported lumen, and ensures smooth blood flow distal and proximal to the treatment site during the treatment process, thereby reducing the probability of vascular accidents in a patient during the treatment and around the treatment, increasing the surgical safety and solving the problem of blocking the blood supply to a blood vessel branch during the treatment in the lumen of the blood vessel branch.

Description

Medical inner support hollow tubular ductus bursae

Technical field

This utility model belongs to medical apparatus and instruments, be concretely be used for intravascular dilation treatment and (or) a kind of conduit of intravascular stent delivery system components.

Background technology

Be used for the aboveground sacculus of the comparatively ideal dilating sacculus of dilation therapy angiopathy so far, generally acknowledged any polyethylene balloon that is better than being used for same purpose.But the cross section of aboveground sacculus is a solid circles, must complete blocking treatment position distance hold blood flow in the therapeutic process, and behind the bloodstream blocking: a. can cause the approaching or complete ischemia of far-end internal organs, secondary ischemia reperfusion injury, even internal organs necrosis.B. because the existence of the pressure of cardiac ejection, heart is counter fights (AIBP) if can cause apart from the nearer ascending aorta of heart or the blocking-up of aortic arch place, and this can bring out serious cardiovascular event undoubtedly and take place, and increases peri-operation period thunder bolt odds.C. sacculus itself is subjected to trend and the strength that the oriented far-end of impact of cardiac ejection pressure moves, and this strength will rely between sacculus and the blood vessel wall frictional force that produces greater than it fully and could keep sacculus in position, this very likely can cause damage to blood vessel wall, and may form serious consequences such as thrombosis or interlayer.Clinically for fear of the appeal defective, solution is to change seance into repeatedly treatment, for example: changed original balloon expandable time into 1 minute by 3 minutes during the PTA treatment, and 1 dilation therapy changed into 2 times or balloon expandable repeatedly, expect to avoid some thunder boltes to take place, but can increase the weight of the damage of tunica intima undoubtedly, the result who facts have proved this method is not fully up to expectations.In addition, be used for the treatment of the mounting system of aortic branch lumen of vessels internal therapy at present, in discharging the support process, also have or the bloodstream blocking of long or short time, may cause the generation of ischemia of spinal cord and paraplegia thus.

Summary of the invention

The purpose of this utility model provides in a kind of vasodilation treatment or the support dispose procedure the not medical inner support hollow tubular ductus bursae of the far and near end in blocking treatment position blood flow, and this tubular pouch conduit also can be used as the assembly of stent delivery system.The purpose of this utility model is achieved by the following technical solution, it comprises a catheter body, tubular pouch, the full pipe that is connected with tubular pouch, be with sleeve pipe on the catheter body, it is characterized in that the sleeve pipe front end has sliding joint more than two, the even hinged N support bar of front end circumference of first sliding joint, the inwall that is annular after one of hinged formation is opened between M support chip side, the other end of support bar is hinged every the hinged place front end of two support chips and support chip, N the support bar of second sliding joint front end and the rear end, hinged place of support chip are hinged, support bar constitutes a umbrella stand formula to ring-shaped inner wall to be supported, M＞N＞2, N: M=1: 2, the inboard of tubular pouch is fixed on the ring-shaped inner wall, the hinged N of the front end of catheter body reverse support bar, the other end of reverse support bar is hinged every the hinged place front end of two support chips and support chip.For guaranteeing the flexibility of tubular pouch, ring-shaped inner wall can be saved along duct direction that support chip is hinged to form by 2-4, supravasal sliding joint also increases to equal number thereupon, the hinged place of the support bar and of second sliding joint front end, two joint support chips is hinged, by that analogy, the hinged support bar of the support chip of last lap and sleeve pipe front end is hinged.

The expansible mechanical system structure that this utility model is formed ensures that blood flow can pass through at the cavity that support chip constitutes, during operation, tubular pouch is directed to target vessel by seal wire, pushing sleeve pipe erects rigid supporting rod, support chip becomes annular, in tubular pouch, inject medical use liquid, make tubular pouch full, blood vessel is expanded forming treatment, simultaneously, make blood flow pass through support cavity, guarantee the blood supply of the far and near end of therapentic part, carrying out the vasodilation treatment or discharging the vascular treatment support simultaneously greater than former blood perfusion amount 50%.When being used for intravascular stent release, this utility model placed do not discharge in the support, be directed to target vessel by seal wire, after with the tubular pouch expansion holder part being opened earlier, reclaim tubular pouch, again inner bracing piece is opened, thereby guarantee that blood flow uninterruptedly passes through, the further expansion tubular pouch all opens support, and blood flow does not have blocking-up in the overall process that support discharges like this.

Major advantage of the present utility model is: the first, do the blood supply that the time spent can guarantee important organ as capsule, comprise brain, liver,kidney,spleen etc., and significantly reduce the generation of AIBP, it is promptly existing that sacculus is counter fights to action of the heart; Simultaneously, can not produce the damage that causes blood vessel wall with blood vessel wall generation friction; The second, guarantee that as the ingredient of stent delivery system the far and near section of a treatment section blood flow is not exclusively blocked when support discharges, guarantee that the blood of important blood vessels is partly supplied, prevention or reduce the generation of paraplegia.The 3rd, can be used as the effect that the emergency care of trauma apparatus can play interim shunt tube.The distance end that can damage tremulous pulse when running into the blood vessel wound is certainly drawn after seal wire sets up the seal wire track from wound respectively, introduce this conduit and far and near end is intersected with the normal blood vessels chamber through seal wire and discharge tubular pouch about about 2cm, can set up an interim blood channel at the far and near end of injured blood vessel like this and ensure the far-end blood supply, for the quality time is striven in the secondary operation reparation, especially even more important in the wartime, can be used as the first aid of battle field medical equipment.This utility model is rational in infrastructure, therapeutic effect is good, and the far and near end of therapentic part blood flow does not have blocking-up in the therapeutic process, thereby reduces in the patient and enclose the probability that vascular accident appears in the treatment phase, increase operation safety, the problem of blocking-up bifurcated artery blood supply when having solved the branch vessel intracavitary therapy.

Description of drawings

Fig. 1 is this utility model front view, and support bar is in half holding state among the figure;

Fig. 2 is this utility model front view, and support bar is in holding state among the figure, and tubular pouch is in full state;

Fig. 3 is this utility model cross sectional representation, and support bar is in holding state among the figure.

Legend: 1, catheter body, 2, reverse support bar, 3, support bar, 4, the tubular pouch outer wall, 5, support chip, 6, sliding joint, 7, the full pipe of tubular pouch, 8, sleeve pipe, 9, the tubular pouch inwall.

The specific embodiment

As shown in Figure 1, catheter body (1) and sleeve pipe (8) are flexible structure, the sleeve pipe front end is provided with two sliding joints (6), sliding joint is gone up support bar (3) the number N=8 that connects, the front end of catheter body connects 8 reverse support bars (2), support chip (5) number M=16, the front end of the other end of support bar and two support chips links together jointly, the ring-shaped inner wall that is made of support chip is formed by connecting by two joint support chips along duct direction, the inwall of tubular pouch (9) is bonded on the support chip, the support bar and one of second sliding joint front end, the junction of two joint support chips connects, the support bar that the second joint support chip is connected with the sleeve pipe front end connects, the full pipe of tubular pouch (7) is fixed on the sleeve pipe, and the full back of tubular pouch tubular pouch outer wall (4) radius that is used for the aortectasia treatment can be extended to 13 millimeters.

Claims

1, medical inner support hollow tubular ductus bursae, comprise a catheter body, tubular pouch, the full pipe that is connected with tubular pouch, be with sleeve pipe on the catheter body, it is characterized in that the sleeve pipe front end has sliding joint more than two, the even hinged N support bar of front end circumference of first sliding joint, the inwall that is annular after one of hinged formation is opened between M support chip side, the other end of support bar is hinged every the junction front end of two support chips and support chip, N the support bar of second sliding joint front end and the rear end, junction of support chip are hinged, support bar constitutes a umbrella stand formula to ring-shaped inner wall to be supported, M＞N＞2, N: M=1: 2, the inboard of tubular pouch is fixed on the ring-shaped inner wall, the hinged N of the front end of catheter body reverse support bar, and the other end of reverse support bar is hinged every the junction front end of two support chips and support chip.

2, according to the said medical inner support of claim 1 hollow tubular ductus bursae, it is characterized in that ring-shaped inner wall can be saved along duct direction that support chip is hinged to form by 2-4, supravasal sliding joint also increases to equal number thereupon, the junction of the support bar and of second sliding joint front end, two joint support chips is hinged, by that analogy, the hinged support bar of the support chip of last lap and sleeve pipe front end is hinged.