CN2462971Y

CN2462971Y - Ultrasonic radiation catheter

Info

Publication number: CN2462971Y
Application number: CN 01214180
Authority: CN
Inventors: 黄晶; 董军; 王志刚; 刘地川
Original assignee: 黄晶
Priority date: 2001-02-16
Filing date: 2001-02-16
Publication date: 2001-12-05
Anticipated expiration: 2011-02-16

Abstract

The utility model relates to an ultrasonic radiation catheter of an interventional therapy device for preventing blood vessel molding from restenosis after an operation is done. The utility model is composed of a catheter head and a catheter body 1, wherein, the catheter head is composed of a wire guiding passageway 2 which supports the catheter head throughout, energy transducers 4 in soft connection by silica gel 3 and with the middles parts arranged at intervals, inner electrodes 5 and outer electrodes 6 which are arranged on the inner sides and the outer sides of the energy transducers 4, a thermoelectric couple 7, and a radioactive label 8 which is connected with the energy transducers 4 on both end heads by the silica gel 3. Each of connecting wires is arranged in the catheter body 1, and a wire guiding penetration hole 9 which is arranged on the side edge of the catheter body 1 is communicated with the wire guiding passageway 2. A plurality of annular ultrasonic energy transducers of the utility model can uniformly send out suitable ultrasonic radially at the catheter head to radiate blood vessels which are treated by interventional therapy, and effect can be generated on the reparative process without damaging and destroying blood vessel.

Description

The ultrasonic irradiation conduit

This utility model relates to a kind of parts that are used for Preventing Restenosis after Angioplasty interventional therapy equipment, a kind of especially ultrasonic irradiation conduit that is used for this class interventional therapy equipment.

The critical treatment method of diseases such as the percutaneous endoluminal vascular is shaped has now become coronary heart disease, and peripheral vessels is narrow, but postoperative restenosis often influences the curative effect of this technology, and it is subject matter and the research focus that present interventional therapy development faces.Studies show that postoperative restenosis mainly is because due to tunica intima cell and the smooth muscle cell hyperplasia, non-ultrasonic technique treatment on probation at present, as red laser, it is to discharge red laser by the conduit inner fiber at target vessel to suppress the postangioplasty neointimal hyperplasia, but its penetrance is relatively poor, and the media smooth muscle is not had effect; Also have a kind of radio nuclide therapy, it is to discharge β or gamma-rays by the conduit of getting involved in the target vessel part, or implants the support with radioactivity and try to achieve better curative effect, but late result is not still understood.Find that now ultrasound wave optionally suppresses the cell of active proliferation, so be expected to become the extremely promising naturopathy method of postoperative restenosis that prevents, but since ultrasound wave from body surface be difficult to see through baroque tissue with dosage ultrasonication accurately in target vessel, technical difficulty makes ultrasonic anti-angiogenic restenosis be difficult to realize, objectively just proposing the interposing catheter architecture advances like this, to be used for ultrasonic interventional therapy equipment.

The purpose of this utility model is to provide a kind of ultrasonic irradiation conduit that is used for ultrasonic interventional therapy equipment that can arrive in the target vessel.

This utility model is achieved in that a kind of ultrasonic irradiation conduit, it is characterized in that: it is made up of conductor housing and catheter body, wherein conductor housing is by the silk guide passage that runs through the supporting tube head, the transducer that is flexible coupling through silica gel that the middle part is distributed in distance, the inside and outside electrode that establish the inside and outside both sides of transducer, thermocouple, and be connected radio-labeled with the transducer of two ends through silica gel and form; Each connects lead and is arranged in the catheter body, and the seal wire of catheter body side setting penetrates the hole and communicates with silk guide passage.

Above-mentioned thermocouple is between transducer.

Above-mentioned transducer adopts the ultrasonic piezoelectric ceramic transducer of ring-type;

Electrode is a silverskin lining copper ring electrode in above-mentioned, and above-mentioned dispatch from foreign news agency is the silverskin gold-plated electrode very, and connects with parallel way between each electrode; Above-mentioned radio-labeled is the platinum labelling.

The ultrasonic piezoelectric ceramic transducer of a plurality of ring-type of the present utility model can be the radial blood vessel of suitable ultrasound wave after with the irradiation interventional therapy that evenly send at conductor housing, its repair process is exerted an influence and do not damage and destroy blood vessel, it has the following advantages: 1, this utility model is provided with silk guide passage, realized the quick of ultrasound catheter radiation treatment, safety and convenient; 2, being spaced of a plurality of transducers guaranteed the stable of the interior sound intensity of effective irradiation scope, makes target vessel obtain evenly ultrasonic irradiation effectively; 3, connect by silica gel between the transducer, guaranteed the flexibility of conductor housing.

The utility model is described in further detail below in conjunction with drawings and Examples:

The structural representation of Fig. 1, this utility model embodiment;

Fig. 2, be the A-A cutaway view of Fig. 1;

Fig. 3, be the B-B cutaway view of Fig. 1;

Fig. 4, be the partial enlarged drawing of I among Fig. 1;

Fig. 5, be the partial enlarged drawing of II among Fig. 1.

Embodiment 1: referring to above-mentioned accompanying drawing as can be known: a kind of ultrasonic irradiation conduit, it is characterized in that: it is made up of conductor housing and catheter body 1, wherein conductor housing is by the silk guide passage 2 that runs through the supporting tube head, the transducer 4 that is flexible coupling through silica gel 3 that the middle part is distributed in distance, the inside and

outside electrode

5,6 that establish transducer 4 inside and outside both sides, thermocouple 7, and be connected radio-labeled 8 with the transducer 4 of two ends through silica gel 3 and form; Each connects lead and is arranged in the catheter body 1, and the seal wire of catheter body 1 side setting penetrates hole 9 and communicates with silk guide passage 2.

Above-mentioned thermocouple 7 is between transducer 4.

Above-mentioned transducer 4 adopts the ultrasonic piezoelectric ceramic transducer of ring-type;

Electrode 5 is silverskin lining copper ring electrode in above-mentioned, and above-mentioned external electrode 6 is the silverskin gold-plated electrode, and connects with parallel way between each electrode; Above-mentioned radio-labeled 8 is the platinum labelling.

Claims

1, a kind of ultrasonic irradiation conduit, it is characterized in that: it is made up of conductor housing and catheter body (1), wherein conductor housing is by the silk guide passage that runs through the supporting tube head (2), the transducer (4) that is flexible coupling through silica gel (3) that the middle part is distributed in distance, the inside and outside electrode (5,6) that establish the inside and outside both sides of transducer (4), thermocouple (7), and be connected radio-labeled (8) with the transducer (4) of two ends through silica gel (3) and form; Each connects lead and is arranged in the catheter body (1), and the seal wire of catheter body (1) side setting penetrates hole (9) and communicates with silk guide passage (2).

2, ultrasonic irradiation conduit as claimed in claim 1 is characterized in that: described thermocouple (7) is positioned between the described transducer (4).

3, as claim 1,2 described ultrasonic irradiation conduits, it is characterized in that: described transducer (4) adopts the ultrasonic piezoelectric ceramic transducer of ring-type.

4, ultrasonic irradiation conduit as claimed in claim 1 is characterized in that: electrode (5) is silverskin lining copper ring electrode in described; Described external electrode (6) is the silverskin gold-plated electrode, and connects with parallel way between each electrode; Described radio-labeled (8) is the platinum labelling.