US20020082558A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical clot treatment device with distal filter
Assignee: Stryker European Operations Holdings LLC
•
Filing: 2002-02-22
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Granted: —
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Expires: 2022-02-22
Abstract
Abstract This is a surgical device usually delivered through an intravascular catheter. It may be used in several ways. It may, for instance, be used to open a clear passageway adjacent thrombus to allow both blood and medication to bypass the clot. It may be used to pierce and to remove thrombus. These thrombus are often found in tortuous vasculature. The device includes several sections. The device has a core element, typically a core wire. Placed around the distal end of the core element is a collapsible but preferably self expanding proximal cage assembly and a distal filter, preferably a self-expanding cage assembly or other filter component. The various portions of those components are preferably radio-opaque. The proximal end of the proximal cage is typically is affixed to an actuator in such a way as to allow expansion of the cage after deployment. The proximal cage assembly may be used for collecting emboli or for displacing them to allow blood flow to resume, either with or without concurrent clot-dissolving drug treatment. The distal sector, whether a self-expanding cage or fan, is placed distally of the thrombus to collect portions of the thrombus which may loosen during the treatment or removal procedure.
Inventors
- 👤 Gene Samson
- 👤 Harold Carrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:17
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/013; A61B; A61B17/00; A61B17/22; A61B17/221; A61F2/0108; A61F2/011; A61B17/22031; A61B2017/22034; A61B2017/22038; A61B2017/22045; A61B2017/22082; A61B2017/22084; A61B2017/2212; A61B90/00; A61B90/36; A61B90/37; A61B2090/376; A61B90/39; A61F2002/016; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0067; A61F2230/0071
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
111 words
1 . A removable flow restoration device comprising: core element means having a distal portion for navigation to a therapeutic site in a lumen and for assisting in puncturing or displacing an occlusion, a first filter means distally located on the core element means for collecting, displacing, or moving the occlusion, a second filter means located on the core element means distal to the first filter means for placement distal to the occlusion to catch the occlusion or fragments thereof, wherein the core element means passes through the first and second filter means, and actuator means for expanding or collapsing the first and second filter means about the core element means.
Claim 2
Dependent Claim
111 words
1 . A removable flow restoration device comprising: core element means having a distal portion for navigation to a therapeutic site in a lumen and for assisting in puncturing or displacing an occlusion, a first filter means distally located on the core element means for collecting, displacing, or moving the occlusion, a second filter means located on the core element means distal to the first filter means for placement distal to the occlusion to catch the occlusion or fragments thereof, wherein the core element means passes through the first and second filter means, and actuator means for expanding or collapsing the first and second filter means about the core element means.
Claim 3
Dependent Claim
17 words
2 . The removable flow restoration device of claim 1 wherein the actuator means is electrolytically activated.
Claim 4
Dependent Claim
17 words
3 . The removable flow restoration device of claim 1 wherein the actuator means is mechanically activated.
Claim 5
Dependent Claim
24 words
4 . The removable flow restoration device of claim 1 additionally comprising a tip located on a distalmost end of the core element means.
Claim 6
Dependent Claim
45 words
5 . The removable flow restoration device of claim 1 wherein a ratio of an outer diameter of the first filter means when expanded to an outer diameter of the first filter means when collapsed is between about 2 to 1 and 10 to 1.
Claim 7
Dependent Claim
45 words
6 . The removable flow restoration device of claim 1 wherein a ratio of an outer diameter of the second filter means when expanded to an outer diameter of the second filter means when collapsed is between about 2 to 1 and 10 to 1.
Claim 8
Dependent Claim
25 words
7 . The removable flow restoration device of claim 1 wherein the core element means is axially moveable within the first and second filter means.
Claim 9
Dependent Claim
27 words
8 . The removable flow restoration device of claim 1 wherein the core element means is rotatable with respect to and non-removable from the first filter means.
Claim 10
Dependent Claim
142 words
9 . A removable flow restoration device comprising: a core element comprising at least an elongated core wire having a distal end and a proximal end, a proximal cage located substantially coaxial about the core element through which the core element passes, a separator located substantially coaxial about the core element and distal to the proximal cage, a distal cage through which the core element passes, located substantially coaxial about the core element and distal to the separator element, the distal cage comprising a plurality of petal-shaped members, at least one of which has a distal rake, wherein the core element passes through the first and second cages, a tubular actuator for expanding and contracting the proximal and distal cages, located substantially coaxial about the core element and proximal to the proximal cage,and a tip member located distal to the distal cage.
Claim 11
Dependent Claim
142 words
9 . A removable flow restoration device comprising: a core element comprising at least an elongated core wire having a distal end and a proximal end, a proximal cage located substantially coaxial about the core element through which the core element passes, a separator located substantially coaxial about the core element and distal to the proximal cage, a distal cage through which the core element passes, located substantially coaxial about the core element and distal to the separator element, the distal cage comprising a plurality of petal-shaped members, at least one of which has a distal rake, wherein the core element passes through the first and second cages, a tubular actuator for expanding and contracting the proximal and distal cages, located substantially coaxial about the core element and proximal to the proximal cage,and a tip member located distal to the distal cage.
Claim 12
Dependent Claim
20 words
10 . The removable flow restoration device of claim 9 wherein the proximal cage comprises a woven braid of ribbons.
Claim 13
Dependent Claim
23 words
11 . The removable flow restoration device of claim 9 wherein at least a portion of the proximal cage comprises a superelastic alloy.
Claim 14
Dependent Claim
21 words
12 . The removable flow restoration device of claim 9 wherein at least a portion of the petal-shaped members comprise wires.
Claim 15
Dependent Claim
24 words
13 . The removable flow restoration device of claim 9 wherein at least a portion of the first cage or second cage is radio-opaque.
Claim 16
Dependent Claim
98 words
14 . An embolism treatment device comprising: a core element comprising at least an elongated core wire having a distal end and a proximal end, a proximal cage located substantially coaxial about the core element through which the core element is axially movable, a woven braided distal cage located substantially coaxial about the core element and distal to the proximal cage, through which the core element is axially movable within a tubular liner, and an actuator for expanding and contracting the proximal and distal cages, located substantially coaxial about the core element and proximal to the proximal cage.
Claim 17
Dependent Claim
98 words
14 . An embolism treatment device comprising: a core element comprising at least an elongated core wire having a distal end and a proximal end, a proximal cage located substantially coaxial about the core element through which the core element is axially movable, a woven braided distal cage located substantially coaxial about the core element and distal to the proximal cage, through which the core element is axially movable within a tubular liner, and an actuator for expanding and contracting the proximal and distal cages, located substantially coaxial about the core element and proximal to the proximal cage.
Claim 18
Dependent Claim
15 words
15 . The embolism treatment device of claim 14 wherein the tubular liner is polymeric.
Claim 19
Dependent Claim
15 words
16 . The embolism treatment device of claim 15 wherein the tubular liner comprises polytetrafluoroethylene.
Claim 20
Dependent Claim
40 words
17 . The embolism treatment device of claim 14 additionally comprising a tubular member located substantially coaxial to the core element and distal to the distal cage for affixing a distal end of the distal cage to the tubular liner.
Claim 21
Dependent Claim
19 words
18 . The embolism treatment device of claim 17 additionally comprising a radio-opaque marker affixed to the tubular member.
Claim 22
Dependent Claim
42 words
19 . The embolism treatment device of claim 14 wherein a ratio of an outer diameter of the proximal cage when expanded to an outer diameter of the proximal cage when collapsed is between about 2 to 1 and 10 to 1.
Claim 23
Dependent Claim
42 words
20 . The embolism treatment device of claim 14 wherein a ratio of an outer diameter of the distal cage when expanded to an outer diameter of the distal cage when collapsed is between about 2 to 1 and 10 to 1.
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