US20050137696A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and methods for protecting against embolization during endovascular heart valve replacement
Assignee: Boston Scientific Scimed Inc
•
Filing: 2004-08-17
•
Granted: —
•
Expires: 2024-08-17
Abstract
Abstract Apparatus for protecting a patient against embolization during endovascular replacement of the patient's heart valve is provided, the apparatus including a replacement valve configured for endovascular delivery and deployment, and an embolic filter configured for disposal downstream of the replacement valve during deployment of the valve. Apparatus including a delivery catheter having an expandable replacement valve disposed therein, and an embolic filter advanceable along the delivery catheter for diverting emboli released during endovascular deployment of the replacement valve is also provided. Furthermore, methods for protecting a patient against embolization during endovascular replacement of the patient's heart valve are provided, the methods including the steps of endovascularly delivering a replacement valve to a vicinity of the patient's heart valve, endovascularly deploying an embolic filter downstream of the heart valve, and endovascularly deploying the replacement valve.
Inventors
- 👤 Amr Salahieh
- 👤 Brian Brandt
- 👤 Dwight Morejohn
- 👤 Kenneth Michlitsch
- 👤 Tom Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/01; A61F2/012; A61F2/2427; A61F2/2439; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0069; A61F2230/0073; A61F2230/008
Claims Analysis
Total Claims: 55
Claim 1
Independent Claim
60 words
1 . Apparatus for protecting against embolization during endovascular replacement of a patient's heart valve, the apparatus comprising: a replacement valve configured for endovascular delivery and deployment; and an embolic filter configured for disposal downstream of the replacement valve during deployment of the valve to divert emboli away from the patient's cerebral vasculature without capturing the emboli within the filter.
Claim 2
Dependent Claim
60 words
1 . Apparatus for protecting against embolization during endovascular replacement of a patient's heart valve, the apparatus comprising: a replacement valve configured for endovascular delivery and deployment; and an embolic filter configured for disposal downstream of the replacement valve during deployment of the valve to divert emboli away from the patient's cerebral vasculature without capturing the emboli within the filter.
Claim 3
Dependent Claim
18 words
2 . The apparatus of claim 1 , wherein the embolic filter is coupled to the replacement valve.
Claim 4
Dependent Claim
18 words
3 . The apparatus of claim 1 , wherein the embolic filter is decoupled from the replacement valve.
Claim 5
Dependent Claim
26 words
4 . The apparatus of claim 1 , wherein the embolic filter is configured for expansion from a collapsed delivery configuration to an expanded deployed configuration.
Claim 6
Dependent Claim
31 words
5 . The apparatus of claim 4 , wherein the embolic filter is configured to contact a patient's aorta and form a circumferential seal against the aorta in the deployed configuration.
Claim 7
Dependent Claim
22 words
6 . The apparatus of claim 4 , wherein the embolic filter is configured for endovascular delivery in the collapsed delivery configuration.
Claim 8
Dependent Claim
21 words
7 . The apparatus of claim 1 , wherein the replacement valve is configured for endovascular delivery through the embolic filter.
Claim 9
Dependent Claim
21 words
8 . The apparatus of claim 1 further comprising a suction element configured to aspirate diverted emboli from the patient's bloodstream.
Claim 10
Dependent Claim
21 words
9 . The apparatus of claim 1 , wherein the embolic filter is fabricated from an expandable wire braid or mesh.
Claim 11
Dependent Claim
16 words
10 . The apparatus of claim 1 , wherein the embolic filter comprises a spiral-wound structure.
Claim 12
Dependent Claim
31 words
11 . The apparatus of claim 10 , wherein the spiral-wound structure is configured to expand when torqued in a first direction and to contract when torqued in an opposite direction.
Claim 13
Dependent Claim
20 words
12 . The apparatus of claim 1 , wherein the embolic filter comprises a permeable membrane having a specified porosity.
Claim 14
Dependent Claim
21 words
13 . The apparatus of claim 12 , wherein the specified porosity comprises pores less than about 100 μm in diameter.
Claim 15
Dependent Claim
16 words
14 . The apparatus of claim 12 , wherein the permeable membrane comprises a varying porosity.
Claim 16
Dependent Claim
27 words
15 . The apparatus of claim 1 further comprising an expandable balloon for performing valvuloplasty, wherein the embolic filter is configured to divert emboli generated during valvuloplasty.
Claim 17
Dependent Claim
24 words
16 . The apparatus of claim 1 , wherein the embolic filter comprises at least one measuring element for determining distances within the patient.
Claim 18
Dependent Claim
32 words
17 . The apparatus of claim 16 , wherein the measuring element is configured to provide a center-axis distance between the patient's heart valve and a desired location within the patient's aorta.
Claim 19
Dependent Claim
20 words
18 . The apparatus of claim 4 , wherein the embolic filter comprises a curved profile in the deployed configuration.
Claim 20
Dependent Claim
26 words
19 . The apparatus of claim 4 , wherein the embolic filter is configured for collapse from the expanded deployed configuration to a collapsed retrieval configuration.
Claim 21
Dependent Claim
24 words
20 . The apparatus of claim 19 further comprising a collapse element adapted to facilitate collapse and retrieval of the filter from the patient.
Claim 22
Dependent Claim
16 words
21 . The apparatus of claim 20 , wherein the embolic filter comprises the collapse element.
Claim 23
Dependent Claim
25 words
22 . The apparatus of claim 21 , wherein the collapse element comprises a tapered opening disposed at a proximal end of the embolic filter.
Claim 24
Dependent Claim
20 words
23 . The apparatus of claim 20 , wherein the collapse element comprises a retrieval sheath advanceable over the filter.
Claim 25
Dependent Claim
37 words
24 . The apparatus of claim 5 , wherein the embolic filter further comprises proximal and distal interfaces, and wherein the embolic filter is configured to contact the patient's aorta only along the proximal and distal interfaces.
Claim 26
Dependent Claim
32 words
25 . The apparatus of claim 7 , wherein the embolic filter is configured to guide a catheter from a proximal end of the filter to a distal end of the filter.
Claim 27
Dependent Claim
23 words
26 . The apparatus of claim 9 , wherein the expandable wire braid or mesh further comprises a Nitinol wire braid or mesh.
Claim 28
Dependent Claim
70 words
27 . A method for protecting a patient against embolization during endovascular replacement of the patient's heart valve, the method comprising: endovascularly delivering a replacement valve to a vicinity of the patient's heart valve; endovascularly deploying an embolic filter downstream of the heart valve; and endovascularly deploying the replacement valve; and diverting emboli away from the patient's cerebral vasculature with the filter without capturing the diverted emboli within the filter.
Claim 29
Dependent Claim
70 words
27 . A method for protecting a patient against embolization during endovascular replacement of the patient's heart valve, the method comprising: endovascularly delivering a replacement valve to a vicinity of the patient's heart valve; endovascularly deploying an embolic filter downstream of the heart valve; and endovascularly deploying the replacement valve; and diverting emboli away from the patient's cerebral vasculature with the filter without capturing the diverted emboli within the filter.
Claim 30
Dependent Claim
14 words
28 . The method of claim 27 further comprising aspirating the emboli via suction.
Claim 31
Dependent Claim
25 words
29 . The method of claim 27 , wherein endovascularly deploying the replacement valve further comprises displacing the patient's heart valve with the replacement valve.
Claim 32
Dependent Claim
15 words
30 . The method of claim 27 further comprising diverting emboli with the embolic filter.
Claim 33
Dependent Claim
22 words
31 . The method of claim 30 , wherein diverting emboli further comprises diverting the emboli away from the patient's cerebral vasculature.
Claim 34
Dependent Claim
22 words
32 . The method of claim 27 further comprising removing the embolic filter from the patient after deployment of the replacement valve.
Claim 35
Dependent Claim
53 words
33 . The method of claim 27 , wherein protecting a patient against embolization during endovascular replacement of the patient's heart valve further comprises protecting the patient during endovascular replacement of the patient's aortic valve, and wherein endovascularly delivering the replacement valve further comprises endovascularly delivering the replacement valve along a retrograde approach.
Claim 36
Dependent Claim
30 words
34 . The method of claim 33 , wherein endovascularly deploying an embolic filter downstream of the heart valve further comprises endovascularly deploying the embolic filter in the patient's aorta.
Claim 37
Dependent Claim
28 words
35 . The method of claim 27 further comprising: endovascularly delivering an expandable balloon to the vicinity of the heart valve; and performing valvuloplasty with the expandable balloon.
Claim 38
Dependent Claim
65 words
36 . Apparatus for protecting against embolization during endovascular replacement of a patient's heart valve, the apparatus comprising: a delivery catheter having an expandable replacement valve disposed therein; and an embolic filter advanceable along the delivery catheter for diverting emboli released during endovascular deployment of the replacement valve, wherein the embolic filter is configured to divert the emboli without capturing the emboli within the filter.
Claim 39
Dependent Claim
65 words
36 . Apparatus for protecting against embolization during endovascular replacement of a patient's heart valve, the apparatus comprising: a delivery catheter having an expandable replacement valve disposed therein; and an embolic filter advanceable along the delivery catheter for diverting emboli released during endovascular deployment of the replacement valve, wherein the embolic filter is configured to divert the emboli without capturing the emboli within the filter.
Claim 40
Dependent Claim
50 words
37 . A kit for endovascularly replacing a patient's diseased heart valve, the kit comprising: a valvuloplasty balloon catheter; a expandable replacement valve configured for endovascular delivery and deployment across the patient's diseased valve; and an embolic filter configured for endovascular delivery and deployment downstream of the patient's diseased valve.
Claim 41
Dependent Claim
50 words
37 . A kit for endovascularly replacing a patient's diseased heart valve, the kit comprising: a valvuloplasty balloon catheter; a expandable replacement valve configured for endovascular delivery and deployment across the patient's diseased valve; and an embolic filter configured for endovascular delivery and deployment downstream of the patient's diseased valve.
Claim 42
Dependent Claim
27 words
38 . The kit of claim 37 , wherein the filter is configured to filter or divert emboli generated during valvuloplasty or deployment of the replacement valve.
Claim 43
Dependent Claim
21 words
39 . The kit of claim 37 further comprising a delivery system for endovascularly delivering and deploying the expandable replacement valve.
Claim 44
Dependent Claim
20 words
40 . The kit of claim 37 further comprising a delivery system for endovascularly delivering and deploying the embolic filter.
Claim 45
Dependent Claim
46 words
41 . A method for endovascularly replacing a patient's diseased heart valve in a protected fashion, the method comprising: deploying an embolic filter downstream of the patient's diseased heart valve; performing valvuloplasty on the diseased valve; and endovascularly deploying a replacement valve across the diseased valve.
Claim 46
Dependent Claim
46 words
41 . A method for endovascularly replacing a patient's diseased heart valve in a protected fashion, the method comprising: deploying an embolic filter downstream of the patient's diseased heart valve; performing valvuloplasty on the diseased valve; and endovascularly deploying a replacement valve across the diseased valve.
Claim 47
Dependent Claim
24 words
42 . The method of claim 41 further comprising diverting emboli generated during valvuloplasty away from the patient's cerebral vasculature with the embolic filter.
Claim 48
Dependent Claim
29 words
43 . The method of claim 41 further comprising diverting emboli generated during endovascular deployment of the replacement valve away from the patient's cerebral vasculature with the embolic filter.
Claim 49
Dependent Claim
25 words
44 . The method of claim 41 further comprising maintaining a position of the embolic filter during valvuloplasty and endovascular deployment of the replacement valve.
Claim 50
Dependent Claim
37 words
45 . The method of claim 44 , wherein maintaining a position of the embolic filter further comprises maintaining a position of an elongated member that is attached to the filter and extends out of the patient.
Claim 51
Dependent Claim
29 words
46 . The method of claim 45 , wherein maintaining a position of the elongated member further comprises reversibly affixing the elongated member to an exterior of the patient.
Claim 52
Dependent Claim
23 words
47 . The method of claim 41 , wherein performing valvuloplasty further comprises endovascularly advancing a valvuloplasty catheter through the deployed embolic filter.
Claim 53
Dependent Claim
26 words
48 . The method of claim 41 , wherein endovascularly deploying a replacement valve further comprises endovascularly advancing the replacement valve through the deployed embolic filter.
Claim 54
Dependent Claim
16 words
49 . The method of claim 41 further comprising removing the embolic filter from the patient.
Claim 55
Dependent Claim
29 words
50 . The method of claim 41 , wherein deploying an embolic filter further comprises deploying proximal and distal interfaces of the filter into contact with the patient's aorta.
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