CN202191333U - PTA balloon dilatation catheter - Google Patents

Abstract

The utility model discloses a PTA balloon dilatation catheter, which comprises a plurality of balloons, an inner tube, an outer tube, a sharp top and a catheter seat; wherein: a plurality of sacculus are established on the inner tube in proper order series connection cover, and the end of adjacent sacculus passes through the outer tube and links to each other, and the end of the sacculus with catheter hub nearest neighbor passes through outer tube and catheter hub and links to each other, and the one end and the pinnacle of inner tube link to each other, and the other end and the catheter hub of inner tube link to each other. The utility model can treat a plurality of pathological changes or treat the same pathological change repeatedly under the expansion condition of the same pressure by a plurality of saccules; the balloon matched tube body has excellent pushing performance, flexibility and penetrability, and can accurately push the catheter to be scattered to the position of smaller arterial vascular lesion of lower limbs; is suitable for various diseases caused by the stenosis, restenosis or blockage of arterial blood vessels of lower limbs, such as chronic ischemia of lower limbs and the like; and simple structure, convenient to use.

Description

The PTA sacculus dilating catheter

Technical field

The utility model relates to a kind of foley's tube, in particular a kind of PTA sacculus dilating catheter.

Background technology

The lower extremities obliterans is through internal medicine blood pressure lowering, blood fat reducing, and treatments such as antiplatelet aggregation only can delay the inaccessible course of disease progress of lower extremities, can not fundamentally eliminate the narrow, inaccessible of lower extremities obliterans blood vessel.

Surgical intervention through tunica intima strip off, artificial blood vessel displacement, bypass reconstruction operations realize, but wound big, have a big risk, especially be unwell to the patient that the lower extremities obliterans merges severe cardiac cerebrovascular disease, diabetes.But interventional therapy has the advantage of Wicresoft, simple to operate, determined curative effect repetitive operation in the lower extremities obliterans lumen of vessels, is the developing direction of diagnosis and treatment vascular conditions.Therefore several kinds of therapeutic schemes below having produced:

(1) percutaneous sacculus angioplasty (PTA)

Percutaneous sacculus angioplasty PTA is the major progress in the angiopathy treatment, and lower extremities obliterans sacculus plasty (BaHoon Angioplasty) has been the technology of a comparative maturity at present.The dominant mechanism of balloon hemangiectasis art is that air bag expansion separates narrow hardened inner membrance; Film smooth muscle strength layer and collagen fiber in destroying simultaneously. make the atheromatous plaque fracture; Middle film stretches, thereby the balloon hemangiectasis art is the treatment lower extremities obliterans method that a kind of mechanical expansion causes blood vessel to be reinvented.

(2) lower extremities obliterans endovascular stent (Stent)

Because the lower extremities obliterans can cause vascular dissection to be torn and elastical retraction, and support is implanted through extruding speckle and compressing tube wall, is a kind of new lower extremities obliterans intracavitary therapy means.Lower extremities obliterans endovascular stent is according to whether the needs balloon expandable is divided into two big types: lower extremities obliterans balloon expandable stent (balloon expandable stent) and lower extremities obliterans self-expanding stent (self-expandable stent).It is narrow that U.S. FDA (food and FAD) has just been ratified balloon expandable stent treatment lower extremities obliterans master iliac artery in the early 1990s, and this type support rigidity is strong, can support long stenosis occlusion pathological changes.The self-expanding cribbing is a kind of support that uses general lower extremities obliterans in recent years, have flexible good, can be through the pathological changes of distortion, advantages such as good and the difficult displacement of adherent property, easy pressurized, blood vessel is tortuous, length section pathological changes is suitable.

(3) plaque rotary-cut art (PAC) in the lumen of vessels

Plaque rotary-cut art starts from the mid-80 in the lumen of vessels; Its principle is to utilize high speed rotating unit that atheromatous plaque is ground to form superfine little microgranule, and pulverized atheromatous plaque chip and microgranule grain can be by reticuloendothelial system phagocytics, and the unlikely distal vessels that causes is stopped up; In theory simultaneously at the hard speckle of excision angiolithic degeneration; Injured blood vessel wall not. such operation has several advantages: the interventional procedure success rate is high, and the treatment indication is wide, but repetitive operation.

(4) other interventional therapeutic techniques of lower extremities obliterans

The lower extremities obliterans is ultrasonic, lower extremities obliterans laser angioplasty is emerging in recent years lower extremities obliterans periphery interventional technique focus; Can open than the inaccessible pathological changes of the long section of small artery, be particularly suitable for the treatment of inaccessible pathological changes below the diabetes rouge tremulous pulse.

Through the Therapeutic Method more than the clinical comparison, the application of percutaneous sacculus angioplasty (PTA) is more ripe.

The utility model content

The utility model purpose: this utility model provides a kind of PTA sacculus dilating catheter, can carry out the treatment of a plurality of pathological changes or the repetitive therapy of same pathological changes simultaneously.

Technical scheme: this utility model comprises a plurality of sacculus, interior pipe, outer tube, pinnacle and catheter block; Wherein: a plurality of sacculus are connected on inner pipe sheathed successively, and the end of adjacent sacculus links to each other through outer tube, link to each other with catheter block through outer tube with the end of the sacculus of catheter block arest neighbors, and an end of interior pipe links to each other with the pinnacle, and the other end of interior pipe links to each other with catheter block.

Be provided with the first not connected inner chamber and second inner chamber in the said catheter block, said first inner chamber links to each other with outer tube, and second inner chamber links to each other with interior pipe.First inner chamber is used for balloon expandable, and second inner chamber is used for guiding wire to be passed through, and two inner chambers are not connected not to be revealed when guaranteeing balloon expandable.

Be provided with sleeve pipe between said catheter block and the outer tube, the casing protection outer tube makes it in the propelling movement process, be difficult for getting loose with catheter block.

Said interior pipe is provided with the platinoiridita Marking ring and is used for labelling, and said platinoiridita Marking ring is positioned at sacculus.

For improving whole the passing through property of conduit, the end of said sacculus is taper.

The work process of this utility model is: during this utility model work, guiding wire passes catheter block second inner chamber and pinnacle, and intravasation arrives the vascular lesion position to catheter positioning.Through the pressurization dilating sacculus, thereby blood vessel dilating reaches the purpose of operative treatment.

Beneficial effect: this utility model is compared prior art and is had the following advantages: this utility model can make a plurality of sacculus under the expansion situation of same pressure to the treatment of a plurality of pathological changes or the repetitive therapy of same pathological changes; Sacculus cooperates body to possess fabulous propelling movement property, pliability and passing through property, can conduit be pushed to exactly and spread to the more tiny arteries lesion locations of lower limb; Be applicable to variously because of the artery of lower extremity angiostenosis, restenosis or obstruction and the disease that causes are like lower limb chronic ischemia etc.; And it is simple in structure, easy to use.

Description of drawings

Fig. 1 is the structural representation of this utility model;

Fig. 2 is the partial schematic diagram of catheter block.

The specific embodiment

Embodiment in the face of this utility model elaborates down; Present embodiment is being to implement under the prerequisite with this utility model technical scheme; Provided detailed embodiment and concrete operating process, but the protection domain of this utility model is not limited to following embodiment.

As shown in Figure 1, present embodiment comprises two sacculus 1,interior pipe 2,outer tube 3, pinnacle 4,sleeve pipe 5, platinoiridita Marking ring 6,catheter block 7; Wherein: the end of sacculus 1 is taper; On thepipe 2, the end of adjacent sacculus 1 linked to each other throughouter tube 3 in two sacculus 1 were connected successively and are set in, and linked to each other withcatheter block 7 throughouter tube 3 with the end of the sacculus 1 ofcatheter block 7 arest neighbors; One end ofinterior pipe 2 links to each other with pinnacle 4; The other end ofinterior pipe 2 links to each other withcatheter block 7, andsleeve pipe 5 is betweencatheter block 7 andouter tube 3, and platinoiridita Marking ring 6 is fixed on theinterior pipe 2 and is positioned at sacculus 1.The conduit intravasation can be convenient in pinnacle 4, improves the pliability of conduit, reduces the damage to blood vessel.

As shown in Figure 2, be provided with the first not connectedinner chamber 8 and secondinner chamber 9 in thecatheter block 7, said firstinner chamber 8 links to each other withouter tube 3, and secondinner chamber 9 links to each other withinterior pipe 2, and first inner chamber, 8 connection pinnacles, 4, the secondinner chambers 9 are communicated with sacculus 1.

Claims (5)

1. a PTA sacculus dilating catheter is characterized in that, comprises a plurality of sacculus (1), interior pipe (2), outer tube (3), pinnacle (4) and catheter block (7); Wherein: a plurality of sacculus (1) are connected successively and are set on the interior pipe (2); The end of adjacent sacculus (1) links to each other through outer tube (3); Link to each other with catheter block (7) through outer tube (3) with the end of the sacculus (1) of catheter block (7) arest neighbors; One end of interior pipe (2) links to each other with pinnacle (4), and the other end of interior pipe (2) links to each other with catheter block (7).

2. PTA sacculus dilating catheter according to claim 1 is characterized in that: be provided with not connected first inner chamber (8) and second inner chamber (9) in the said catheter block (7), said first inner chamber (8) links to each other with outer tube (3), and second inner chamber (9) links to each other with interior pipe (2).

3. PTA sacculus dilating catheter according to claim 1 is characterized in that: be provided with sleeve pipe (5) between said catheter block (7) and the outer tube (3).

4. PTA sacculus dilating catheter according to claim 1 is characterized in that: pipe (2) is provided with platinoiridita Marking ring (6) in said, and said platinoiridita Marking ring (6) is positioned at sacculus (1).

5. PTA sacculus dilating catheter according to claim 1 is characterized in that: the end of said sacculus (1) is taper.

Images