IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0075347
(2016-03-21)
|
등록번호 |
US-10028820
(2018-07-24)
|
발명자
/ 주소 |
- Grewe, David D.
- Chandra, Santanu
|
출원인 / 주소 |
- COOK MEDICAL TECHNOLOGIES LLC
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
8 |
초록
▼
An intravascular filter device having a flexible arm which comprises a portion of an alarm system for detecting filling or plugging of the filter by captured emboli is described. The flexible arm may be made of ferromagnetic material, a magnet, or have at its tip a magnet which, as it moves under sy
An intravascular filter device having a flexible arm which comprises a portion of an alarm system for detecting filling or plugging of the filter by captured emboli is described. The flexible arm may be made of ferromagnetic material, a magnet, or have at its tip a magnet which, as it moves under systolic and diastolic pressures, generates a signal detectable by an electrical sensor or a magnetometer. The signals from each of a pair of artery filters may be measured and compared to determine whether one filter is plugged. A system for detection and a method of use are also provided.
대표청구항
▼
1. An intravascular device for capturing emboli, the intravascular device comprising: a device body having a longitudinal axis and comprising: a filter basket comprising a filter portion and a lip attached to the filter portion, the lip defining an opening to the filter portion, the filter portion e
1. An intravascular device for capturing emboli, the intravascular device comprising: a device body having a longitudinal axis and comprising: a filter basket comprising a filter portion and a lip attached to the filter portion, the lip defining an opening to the filter portion, the filter portion extending distally to a filter end from the lip and having apertures formed therethrough for blood flow; anda plurality of elongate members each having a proximal end and a distal end, the distal ends being attached to and disposed circumferentially on the lip of the filter basket, each elongate member extending proximally to its proximal end, the elongate members defining a device interior therebetween; anda flexible arm comprising a nonmagnetic material, the flexible arm having a first end attached to the device body and extending into the device interior to a second end, a magnetic element being disposed at the second end of the flexible arm such that movement of the flexible arm is indicative of capture of emboli within the filter portion. 2. The intravascular device according to claim 1 wherein the first end of the flexible arm is attached to the lip of the basket. 3. The intravascular device according to claim 1 wherein the first end of the flexible arm is attached to an elongate member. 4. The intravascular device according to claim 1 wherein the flexible arm is formed integrally with the device body. 5. The intravascular device according to claim 1 wherein the proximal ends of the elongate members are attached at a proximal hub. 6. The intravascular device according to claim 1 wherein the second end of the flexible arm is free to move during systole and diastole. 7. The intravascular device according to claim 1 wherein the basket comprises a nickel-titanium alloy. 8. The intravascular device according to claim 1 further comprising a sleeve attached to the lip of the basket portion and extending proximally to a proximal portion, the sleeve surrounding the elongate members, at least one hole being formed through the sleeve at its proximal portion. 9. The intravascular device according to claim 1 wherein the basket comprises woven polymer fibers. 10. The intravascular device according to claim 1 wherein the flexible arm comprises a nickel-titanium alloy. 11. The intravascular device according to claim 1 wherein the device body comprises a material which releases nitric oxide into the bloodstream of a patient in which it is installed. 12. The intravascular device according to claim 1 wherein the flexible arm and the elongate members are coated with a coagulation-inhibiting material. 13. The intravascular device according to claim 1 wherein the basket has a substantially semispherical shape. 14. A system for detecting embolic fragments in an intravascular device, the system comprising: an intravascular device for capturing emboli comprising: a device body having a longitudinal axis and comprising: a filter basket comprising a filter portion and a lip attached to the filter portion, the lip defining an opening to the filter portion, the filter portion extending distally to a filter end from the lip and having apertures formed therethrough for blood flow; anda plurality of elongate members each having a proximal end and a distal end, the distal ends being attached to and disposed circumferentially on the lip of the filter basket, each elongate member extending proximally to its proximal end, the elongate members defining a device interior therebetween; anda flexible arm comprising a nonmagnetic material, the flexible arm having a first end attached to the device body and extending into the device interior to a second end, a magnetic element being disposed at the second end of the flexible arm such that movement of the flexible arm generates a signal indicative of capture of emboli within the filter portion; anda detector for detecting the signal generated by the flexible arm, the signal comprising at least one of a voltage, a current, and an electromagnetic field. 15. The system according to claim 14, wherein the first end of the flexible arm is attached to the lip of the basket. 16. The system according to claim 14, wherein the first end of the flexible arm is attached to an elongate member. 17. The system according to claim 14, wherein the flexible arm is formed integrally with the device body. 18. A method for detecting embolic fragments in a blood vessel, the method comprising: implanting an intravascular device having a device body into the blood vessel, the device comprising a filter basket, the device having a flexible arm therewithin comprising a magnetic element, the flexible arm having a first end attached to the device body and extending to a second end, the flexible arm comprising a nonmagnetic material and having a magnet disposed at the second end, such that movement of the flexible arm is indicative of blood flow through the filter basket defining a baseline signal;generating an experimental signal; andcomparing the experimental signal to the baseline signal to determine the presence of captured emboli within the intravascular device. 19. The method of claim 18, wherein the baseline signal and the current signal comprise a measurement of current. 20. The method of claim 18, wherein the baseline signal and the current signal comprise a measurement of voltage.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.