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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0548692 (2000-04-13) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 428 인용 특허 : 18 |
Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable ca
Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable catheter drive cable. The catheter drive cable may have an operative element, e.g., an ultrasonic transducer or an artherctomy blade, distally mounted thereon for providing diagnostic or therapeutic functions to the physician. To control the rotation of the catheter drive shaft, the clutch assembly is configured such that the catheter drive shaft is operated in a drive mode (i.e., it is allowed to rotate) and in a release mode (i.e., it is prevented from rotating). The clutch assembly includes a driver member and a driven member, one of which is magnetic and the other of which is ferrous. The magnetic and ferrous members are arranged in relation to each other, e.g., concentrically, such that a magnetic relationship is created therebetween, which is not overcome when an applied torque does not exceed a critical magnitude, but is overcome when the applied torque exceeds the critical magnitude.
Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable ca
Rotating element catheters and catheter assemblies employ clutch assemblies for preventing rotational energy from being transmitted from a motor drive unit to the catheter element under defined circumstances. The catheter assembly includes an elongate member in which there is disposed a rotatable catheter drive cable. The catheter drive cable may have an operative element, e.g., an ultrasonic transducer or an artherctomy blade, distally mounted thereon for providing diagnostic or therapeutic functions to the physician. To control the rotation of the catheter drive shaft, the clutch assembly is configured such that the catheter drive shaft is operated in a drive mode (i.e., it is allowed to rotate) and in a release mode (i.e., it is prevented from rotating). The clutch assembly includes a driver member and a driven member, one of which is magnetic and the other of which is ferrous. The magnetic and ferrous members are arranged in relation to each other, e.g., concentrically, such that a magnetic relationship is created therebetween, which is not overcome when an applied torque does not exceed a critical magnitude, but is overcome when the applied torque exceeds the critical magnitude. f claim 6, wherein the second special symbol is wild such that the bonus game awards the bonus round payout with the second special symbol evaluated as a wild. 8. The slot machine of claim 1, wherein during each of the bonus rounds the special symbol and the stop-bonus symbol randomly move to and stop at the new respective positions on the array. 9. The slot machine of claim 1, wherein the winning bonus game outcome includes the special symbol along the pay line. 10. A gaming machine comprising: a visual display showing an array of symbols in visual association with at least one pay line, the array including a special symbol and a stop-game symbol; and a game of chance including a plurality of game rounds, wherein during each of the game rounds the special symbol and the stop-game symbol move to and stop at new respective positions on the array, the game of chance awarding a payout during the round if the symbols along the pay line correspond to a winning game outcome, the game of chance ending in response to the new respective positions of the special symbol and the stop-bonus symbol on the array during one of the game rounds being the same position. 11. The gaming machine of claim 10, wherein the special symbol is wild such that the game of chance awards the payout with the special symbol evaluated as a wild. 12. The gaming machine of claim 10, wherein an original position of the special symbol on the array at a beginning of the game of chance remains wild throughout the game of chance. 13. The gaming machine of claim 10, wherein the array includes a second special symbol that, during certain ones of the game rounds, also moves to and stops at a new position on the array. 14. The gaming machine of claim 13, wherein the second special symbol is wild such that the game of chance awards the payout with the second special symbol evaluated as a wild. 15. The gaming machine of claim 10, wherein during each of the game rounds the special symbol and the stop-game symbol randomly move to and stop at the new respective positions on the array. 16. The gaming machine of claim 10, wherein the winning game outcome includes the special symbol along the pay line. 17. A gaming machine comprising: a visual display showing an array of symbols in visual association with at least one pay line, the array including first and second wild symbols; and a game of chance including a plurality of game rounds, wherein during certain ones of the game rounds the first and second wild symbols move to and stop at new respective positions on the array, the game of chance awarding a payout during the round if the symbols along the pay line correspond to a winning game outcome, the game of chance evaluating the first and second wild symbols as wilds in determining whether or not to award the payout. 18. The gaming machine of claim 17, wherein original positions of the respective first and second wild symbols on the array at a beginning of the game of chance remains wild throughout the game of chance. 19. The gaming machine of claim 18, wherein the original positions of the respective first and second wild symbols are the same position. 20. The gaming machine of claim 17, further including a basic game controlled by a processor in response to a wager amount, wherein in the basic game the array provides rotatable reels that are rotated and stopped to place the symbols of each reel in visual association with the pay line, the basic game awarding a basic game payout if the symbols along the pay line correspond to a winning basic game outcome, the basic game having a start-bonus outcome, and wherein the game of chance is a bonus game activated by the processor in response to the start-bonus outcome. 21. The gaming machine of claim 17, wherein the winning game outcome includes at least one of the first and second wild symbols along the pay line. 22. A method of operating a slot machine under control of a processor comprising: a) providing a basic game
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