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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0927861 (1986-11-07) |
| 발명자 / 주소 |
|
| 인용정보 | 피인용 횟수 : 281 인용 특허 : 0 |
A steerable medical probe device, such as a catheter, comprises a flexible, inner tubular body, a plurality of electrical conductors wrapped about the inner tubular body; and an insulating layer surrounding the conductors. Rigid non-conductive rings are adhesively secured at axially spaced locations
A steerable medical probe device, such as a catheter, comprises a flexible, inner tubular body, a plurality of electrical conductors wrapped about the inner tubular body; and an insulating layer surrounding the conductors. Rigid non-conductive rings are adhesively secured at axially spaced locations along the distal end of the probe. A plurality of shape memory titanium-nickel wires extend between adjacent pairs of rings, and are electrically connected to a control device and power source. The control device may be operated to apply low current pulses selectively through one or more of the wires to effect contraction of the heated wires and thereby cause the distal end of the probe to bend in a desired direction.
A catheter assembly comprising an elongated, flexible, tubular body of multi-layered wall construction having a proximal end for connection to a power source, and a distal end for insertion into a body, said tubular body including an inner flexible tube, a plurality of pairs of electrical conductors
A catheter assembly comprising an elongated, flexible, tubular body of multi-layered wall construction having a proximal end for connection to a power source, and a distal end for insertion into a body, said tubular body including an inner flexible tube, a plurality of pairs of electrical conductors, at least one pair of relatively rigid rings encircling said flexible tubular body at axially spaced locations adjacent the distal end thereof, a plurality of temperature activated shape memory elements extending between said at least one pair of rigid rings, said elements contractible upon application of heat, each of said elements individually electrically connected to a pair of said conductors and to said power source, and control means for selectively heating individual memory elements to predetermined temperatures to effect shape and direction change of said distal end of said catheter within the body.
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