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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | UP-0465767 (2006-08-18) |
| 등록번호 | US-7674253 (2010-04-21) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 366 인용 특허 : 16 |
In an embodiment, the invention provides a catheter suitable for use in performing a procedure within a vessel, lumen or organ of a living having a distal end which is steerable, such as upon the application of compression. The catheter may be of the over the wire type, or alternatively may be a rap
In an embodiment, the invention provides a catheter suitable for use in performing a procedure within a vessel, lumen or organ of a living having a distal end which is steerable, such as upon the application of compression. The catheter may be of the over the wire type, or alternatively may be a rapid exchange catheter. The catheter may provide for a rotating element which may be used to open a clogged vessel, or alternatively to provide information about adjacent tissues, such as may be generated by imaging or guiding arrangements using tissue detection systems known in the art, e.g., ultrasound, optical coherence reflectometry, etc. For rapid exchange catheters having a rotating element, there is provided an offset drive assembly to allow the rotary force to be directed from alongside the guidewire to a location coaxial to and over the guidewire.
What is claimed is: 1. A rapid exchange catheter for conducting a procedure within a lumen, duct or organ of a living being comprising: a working element arranged at a distal portion of said catheter, said working element having an axis of rotation; a guidewire passageway arranged through said work
What is claimed is: 1. A rapid exchange catheter for conducting a procedure within a lumen, duct or organ of a living being comprising: a working element arranged at a distal portion of said catheter, said working element having an axis of rotation; a guidewire passageway arranged through said working element and co-axial with said axis of rotation; and a drive input shaft having a rotary drive axis offset radially from said working element axis of rotation, wherein said drive input shaft is arranged to effect said rotation of said working element through an offset drive mechanism, and further wherein at least a portion of said drive input shaft is located 10-20 cm from a distal tip of said catheter. 2. The rapid exchange catheter of claim 1, arranged to fit within a Number 5 French catheter. 3. The rapid exchange catheter of claim 2, wherein at least some of the components making up the offset drive comprise materials capable of exhibiting at least one of super-elasticity and high damping. 4. The rapid exchange catheter of claim 1, wherein said offset drive mechanism comprises a friction drive system. 5. The rapid exchange catheter of claim 4, wherein said offset drive mechanism comprises an epicyclic drive assembly comprising at least two planet rollers, a nipper ring and a sun roller. 6. The rapid exchange catheter of claim 5, wherein said sun and planet rollers have a tolerance of at least about 250 millionths of an inch. 7. The rapid exchange catheter of claim 5, wherein said epicyclic drive assembly is arranged to receive power input from said drive input shaft arranged to cause the rotation of one of said planet rollers, whereupon said power is transmitted by friction in an epicyclic manner and is output from said sun roller to effect the rotation of said working element. 8. The rapid exchange catheter of claim 7, wherein said sun roller is arranged to coaxially accept the slidable passage of a guidewire therethrough. 9. The rapid exchange catheter of claim 5, wherein at least one of the nipper ring, sun roller, or planet rollers comprises an alloy having superelastic properties. 10. The rapid exchange catheter of claim 1, further comprising a drive motor and associated controls, said drive motor being arranged to effect the rotation of said drive input shaft. 11. The rapid exchange catheter of claim 10, further comprising a swivel located distally of said drive motor and associated controls, said swivel being arranged to allow the independent rotation of said rapid exchange catheter independently of said drive motor. 12. The rapid exchange catheter of claim 1 wherein the distal end is arranged to be deflected. 13. The rapid exchange catheter of claim 12, wherein said deflectable distal end comprises a coiled spring arranged to be deflected and thereby vary the shape of the distal end of the catheter. 14. The rapid exchange catheter of claim 13, wherein at least a portion of said coiled spring comprises a first side and a second side, where, on the first side, at least a portion of the coils are immobilized locally in an open coil relationship, such that upon application of a compressive load along the axis of said open coiled spring, said first side resists collapse on the immobilized side, and said second side, which is not immobilized, collapses in response to the application of a compressive load, whereupon said coiled spring assumes a curved orientation. 15. The rapid exchange catheter of claim 12, wherein said deflectable distal end is actuated by a steering thimble, arranged to be rotated to transmit a deflecting force distally through the rapid exchange catheter. 16. The rapid exchange catheter of claim 15, wherein said deflecting force is transmitted through a reversing mechanism to convert a tensile force into a compressive force. 17. The rapid exchange catheter of claim 1, wherein said rotation of said working element minimizes frictional resistance for the advancement of a guidewire through said guidewire passageway. 18. A rapid exchange catheter for conducting a procedure within a lumen, duct or organ of a living being comprising: a working element arranged at a distal portion of said catheter, said working element having an axis of rotation; a guidewire passageway arranged through said working element and co-axial with said axis of rotation; and a drive input shaft having a rotary drive axis offset radially from said working element axis of rotation, wherein said drive input shaft is arranged to effect said rotation of said working element through an offset drive mechanism, wherein at least said working element, said guidewire passageway and said drive input shaft are arranged to fit within a single catheter not larger than Number 10 French. 19. A rapid exchange catheter for conducting a procedure within a lumen, duct or organ of a living being comprising: a working element arranged at a distal portion of said catheter, said working element having an axis of rotation; a guidewire passageway positioned within said working element and co-axial with said axis of rotation; and a drive input shaft having a rotary drive axis offset radially from said working element axis of rotation, wherein said drive input shaft is arranged to effect said rotation of said working element through an offset drive mechanism, wherein at least said portion of said drive input shaft that engages said working element is located within said living being when said catheter is in use in said procedure. 20. The rapid exchange catheter of claim 19, further comprising a transition segment, and wherein said transition segment also is located within said living being during use.
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