Patent US5490859A successfully refreshed from Google Patents.
US5490859A
Expired / Lapsed
US
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Expandable intravascular occlusion material removal devices and methods of use
Assignee: Boston Scientific Scimed Inc
•
Filing: 1993-04-29
•
Granted: 1996-02-13
•
Expires: 2013-04-29
Abstract
Abstract An intravascular occlusion material removal device for removing vascular occlusion material in a vascular lumen comprises an expandable material removal element movable between an expanded position and a contracted position. The material removal element has a distal end and a proximal end. A drive shaft is operatively connected to the distal end of the expandable material removal element for rotating the removal element. A catheter surrounds a portion of the drive shaft. The catheter has a distal end for operatively variably contacting the proximal end of the material removal element such that the removal element is rotatable with respect to the catheter. The catheter is shiftable with respect to the drive shaft for moving the material removal element between the expanded position and the contracted position. A number of novel methods for removing vascular occlusion material are also provided. One such method comprises the steps of: providing a vascular occlusion material removal device having an expandable occlusion material removal element, wherein the removal element comprises a plurality of braided wires, further comprising an abrasive disposed on the wires; providing a drive shaft disposed in and shiftable with respect to the removal element; intravascularly positioning the removal element distally of the occlusion material; shifting the drive shaft with respect to the removal element to expand the element intravascularly; and moving the removal element proximally within the vascular lumen to remove occlusion material. The removal element can also be moved distally within the vascular lumen to engage the occlusion material. Also, removed occlusion material can be collected by a collection portion on the removal element.
Inventors
- 👤 Hans A. Mische
- 👤 Thomas V. Ressemann
- 👤 Anthony C. Vrba
- 👤 Steven S. Hackett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:03
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61B17/22; A61B2017/22038; A61B2017/22042; A61B2017/22072; A61B2017/22074; A61B2017/22075; A61B2017/320004; A61B2017/320012; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 72
Claim 1
Independent Claim
207 words
An intravascular device for removing vascular occlusion material within a vascular lumen in a patient, wherein the occlusion material defines a configuration, the intravascular device comprising: an expandable material removal element having first and second ends and including a plurality of wires disposed between the first and second ends; a catheter shaft extending to the first end of the expandable material removal element; a drive shaft for energizing the material removal element intravascularly; the drive shaft having a proximal end and a distal end, the drive shaft being connected to the second end of the material removal element proximate the distal end of the drive shaft extending through the material removal element and being shiftable with respect to the material removal element and the catheter shaft; the drive shaft being disposed within the catheter shaft; the material removal element being expandable responsive to shifting of the drive shaft; and the expandable removal element being sufficiently deformable so that the element assumes a configuration corresponding to the configuration defined by the non-occluded diameter upon expansion of the element; and a collection portion disposed on the material removal element for collecting removed occlusion material, the collection portion including a retention member disposed on the wires of the removal element.
Claim 2
Dependent Claim
207 words
An intravascular device for removing vascular occlusion material within a vascular lumen in a patient, wherein the occlusion material defines a configuration, the intravascular device comprising: an expandable material removal element having first and second ends and including a plurality of wires disposed between the first and second ends; a catheter shaft extending to the first end of the expandable material removal element; a drive shaft for energizing the material removal element intravascularly; the drive shaft having a proximal end and a distal end, the drive shaft being connected to the second end of the material removal element proximate the distal end of the drive shaft extending through the material removal element and being shiftable with respect to the material removal element and the catheter shaft; the drive shaft being disposed within the catheter shaft; the material removal element being expandable responsive to shifting of the drive shaft; and the expandable removal element being sufficiently deformable so that the element assumes a configuration corresponding to the configuration defined by the non-occluded diameter upon expansion of the element; and a collection portion disposed on the material removal element for collecting removed occlusion material, the collection portion including a retention member disposed on the wires of the removal element.
Claim 3
Dependent Claim
72 words
An intravascular device as defined in claim 1 further comprising: a motor operatively connected to the drive shaft proximate the proximal end of the drive shaft for rotating the expandable material removal element intravascularly; wherein removing force is generated by rotation of the element intravascularly for removing vascular occlusion material; and wherein the configuration of the removal element relatively concentrates removing force on the occlusion material upon rotation of the removal element.
Claim 4
Dependent Claim
43 words
An intravascular device as defined in claim 1 further comprising: means operatively connected to the removal element for rotating the element intravascularly, rotation of the element generating a force which is relatively concentrated on the occlusion material as compared to the vascular lumen.
Claim 5
Independent Claim
155 words
A method for removing occlusion material from a vascular lumen within a patient comprising the steps of: a) providing an occlusion material removal device having an expandable material removal element, a single rotatable drive shaft and a catheter shaft, the removal element having first and second ends, the catheter shaft extending to the first end and the drive shaft being connected to the second end, the single rotatable drive shaft extending through the material removal element, and the material removal element being variably expandable responsive to shifting of the single rotatable drive shaft with respect to the removal element and the catheter shaft; b) navigating the material removal element distally through the occlusion material; c) shifting the single rotatable drive shaft with respect to the material removal element and the catheter shaft thereby expanding the removal element; and d) moving the expanded material removal element proximally within the vascular lumen to engage the occlusion material.
Claim 6
Independent Claim
155 words
A method for removing occlusion material from a vascular lumen within a patient comprising the steps of: a) providing an occlusion material removal device having an expandable material removal element, a single rotatable drive shaft and a catheter shaft, the removal element having first and second ends, the catheter shaft extending to the first end and the drive shaft being connected to the second end, the single rotatable drive shaft extending through the material removal element, and the material removal element being variably expandable responsive to shifting of the single rotatable drive shaft with respect to the removal element and the catheter shaft; b) navigating the material removal element distally through the occlusion material; c) shifting the single rotatable drive shaft with respect to the material removal element and the catheter shaft thereby expanding the removal element; and d) moving the expanded material removal element proximally within the vascular lumen to engage the occlusion material.
Claim 7
Dependent Claim
27 words
A method as defined in claim 4 further comprising the step of: e) positioning the material removal element in a contracted position distally of the occlusion material.
Claim 8
Dependent Claim
46 words
A method as defined in claim 4 wherein the providing step a) includes providing a collection portion on a distal portion of the material removal element for collecting removed occlusion material, and further comprising the step of: e) collecting removed occlusion material in the collection portion.
Claim 9
Dependent Claim
30 words
A method as defined in claim 6 wherein the shifting step c) comprises shifting the single rotatable drive shaft with respect to the removal element to deploy the collection portion.
Claim 10
Dependent Claim
132 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the removal device comprising: an expandable material removal element having a distal end and a proximal end insertable intravascularly into a patient; a catheter shaft extending to the proximal end of the removal element; a drive shaft disposed through the removal element and connected to the distal end of the expandable material removal element; the drive shaft being shiftable within the material removal element; the material removal element being expandable responsive to shifting of the drive shaft with respect to the removal element and the catheter shaft; the drive shaft being disposed within the catheter shaft; a plurality of braided wires comprising the removal element; and an abrasive disposed on the wires for removing vascular occlusion material.
Claim 11
Dependent Claim
132 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the removal device comprising: an expandable material removal element having a distal end and a proximal end insertable intravascularly into a patient; a catheter shaft extending to the proximal end of the removal element; a drive shaft disposed through the removal element and connected to the distal end of the expandable material removal element; the drive shaft being shiftable within the material removal element; the material removal element being expandable responsive to shifting of the drive shaft with respect to the removal element and the catheter shaft; the drive shaft being disposed within the catheter shaft; a plurality of braided wires comprising the removal element; and an abrasive disposed on the wires for removing vascular occlusion material.
Claim 12
Dependent Claim
26 words
A vascular occlusion material removal device as defined in claim 8 further comprising: a retention member disposed on the removal element for collecting removed occlusion material.
Claim 13
Dependent Claim
18 words
A vascular occlusion material removal device as defined in claim 9 wherein the retention member comprises a filter.
Claim 14
Dependent Claim
18 words
A vascular occlusion material removal device as defined in claim 9 wherein the retention member comprises a fabric.
Claim 15
Dependent Claim
19 words
A vascular occlusion material removal device as defined in claim 9 wherein the retention member comprises a polymeric coating.
Claim 16
Dependent Claim
27 words
A vascular occlusion material removal device as defined in claim 9 wherein the abrasive and the retention member are located on opposite ends of the removal element.
Claim 17
Dependent Claim
23 words
A vascular occlusion material removal device as defined in claim 9 wherein the retention member includes an aperture for permitting fluid flow therethrough.
Claim 18
Dependent Claim
21 words
A vascular occlusion material removal device as defined in claim 14 wherein the aperture has a diameter measuring about 5 microns.
Claim 19
Dependent Claim
123 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the removal device comprising: an expandable material removal element insertable intravascularly into a patient, the removal element having first and second ends; a catheter shaft extending to the first end; a drive shaft disposed through and connected to the second end of the expandable material removal element for energizing the removal element; the drive shaft being disposed within the catheter shaft; the drive shaft being shiftable with respect to the material removal element and the catheter shaft; the material removal element being expandable responsive to shifting of the drive shaft; a plurality of braided wires comprising the removal element; and the wires being made from a super-elastic alloy.
Claim 20
Dependent Claim
123 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the removal device comprising: an expandable material removal element insertable intravascularly into a patient, the removal element having first and second ends; a catheter shaft extending to the first end; a drive shaft disposed through and connected to the second end of the expandable material removal element for energizing the removal element; the drive shaft being disposed within the catheter shaft; the drive shaft being shiftable with respect to the material removal element and the catheter shaft; the material removal element being expandable responsive to shifting of the drive shaft; a plurality of braided wires comprising the removal element; and the wires being made from a super-elastic alloy.
Claim 21
Dependent Claim
17 words
A vascular occlusion material removal device as defined in claim 16 wherein the super-elastic alloy is nitinol.
Claim 22
Independent Claim
140 words
A method for removing vascular occlusion material from a vascular lumen comprising the steps of: providing a vascular occlusion material removal device having an expandable occlusion material removal element, the removal element having first and second ends, the removal element including a plurality of braided wires and an abrasive disposed on the wires; providing a catheter shaft extending to the first end of the removal element; providing a drive shaft disposed in and connected to the second end of the removal element, the drive shaft being shiftable with respect to the removal element and the catheter shaft; intravascularly positioning the removal element distally of the occlusion material; shifting the drive shaft with respect to the removal element and the catheter shaft to expand the element intravascularly; and moving the removal element proximally within the vascular lumen to remove occlusion material.
Claim 23
Independent Claim
140 words
A method for removing vascular occlusion material from a vascular lumen comprising the steps of: providing a vascular occlusion material removal device having an expandable occlusion material removal element, the removal element having first and second ends, the removal element including a plurality of braided wires and an abrasive disposed on the wires; providing a catheter shaft extending to the first end of the removal element; providing a drive shaft disposed in and connected to the second end of the removal element, the drive shaft being shiftable with respect to the removal element and the catheter shaft; intravascularly positioning the removal element distally of the occlusion material; shifting the drive shaft with respect to the removal element and the catheter shaft to expand the element intravascularly; and moving the removal element proximally within the vascular lumen to remove occlusion material.
Claim 24
Dependent Claim
23 words
A method according to claim 18 further comprising the step of rotating the drive shaft to cause rotation of the removal element intravascularly.
Claim 25
Dependent Claim
161 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the material removal device comprising: an expandable material removal element movable between an expanded position and a contracted position having a distal end and a free-wheeling proximal end; a catheter shaft having a proximal and a distal end extending to the free-wheeling proximal end of the removal element; a drive shaft operatively connected to the distal end of the expandable material removal element to rotate the removal element, the drive shaft being shiftable with respect to the removal element and the catheter shaft to move the removal element between the expanded position and the contracted position, the distal end of the catheter shaft surrounding a portion of the drive shaft; and a bearing surface located at the distal end of the catheter variably engageable with the free-wheeling proximal end of the removal element to move the removal element between the expanded position and the contracted position.
Claim 26
Dependent Claim
161 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the material removal device comprising: an expandable material removal element movable between an expanded position and a contracted position having a distal end and a free-wheeling proximal end; a catheter shaft having a proximal and a distal end extending to the free-wheeling proximal end of the removal element; a drive shaft operatively connected to the distal end of the expandable material removal element to rotate the removal element, the drive shaft being shiftable with respect to the removal element and the catheter shaft to move the removal element between the expanded position and the contracted position, the distal end of the catheter shaft surrounding a portion of the drive shaft; and a bearing surface located at the distal end of the catheter variably engageable with the free-wheeling proximal end of the removal element to move the removal element between the expanded position and the contracted position.
Claim 27
Dependent Claim
50 words
A vascular occlusion material removal device as defined in claim 20 further comprising a removal element expansion control mechanism for positively controlling movement of the removal element between the expanded position and the contracted position, the control mechanism being at an end of the drive shaft opposite the removal element.
Claim 28
Dependent Claim
59 words
A vascular occlusion material removal device as defined in claim 21 wherein the removal element expansion control mechanism includes a groove and a tab; the tab being selectively movable into and out of the groove; and the drive shaft being movable with respect to the removal element responsive to movement of the tab into and out of the groove.
Claim 29
Dependent Claim
45 words
A vascular occlusion material removal device as defined in claim 21 wherein the removal element expansion control mechanism includes an actuation portion for accepting force from a treating physician to positively control movement of the removal element between the expanded position and the contracted position.
Claim 30
Dependent Claim
42 words
A vascular occlusion material removal device as defined in claim 21 further comprising scaling means operatively associated with the removal element expansion control mechanism for providing an indication of position of the removal element between the expanded position and the contracted position.
Claim 31
Dependent Claim
63 words
A vascular occlusion material removal device as defined in claim 20 further comprising c) a catheter having a distal end surrounding a portion of the drive shaft; d) a bearing surface located at the distal end of the catheter variably engagable with the free-wheeling proximal end of the removal element to move the removal element between the expanded position and the contracted position.
Claim 32
Dependent Claim
51 words
A vascular occlusion material removal device as defined in claim 20 further comprising a bearing surface located at the free-wheeling proximal end of the removal element; and wherein the bearing surface on the free-wheeling proximal end has a configuration for facilitating rotation of the removal element with respect to the catheter.
Claim 33
Dependent Claim
38 words
A vascular occlusion material removal device as defined in claim 26 wherein one of the bearing surfaces has an enlarged portion such that the other of the bearing surfaces is rotatable within and relative to the enlarged portion.
Claim 34
Dependent Claim
20 words
A vascular occlusion material removal device as deemed in claim 26 wherein one of the bearing surfaces comprises a hypotube.
Claim 35
Dependent Claim
36 words
A vascular occlusion material removal device as defined in claim 26 further comprising a lubricous or low friction substance disposed on at least on of the bearing surfaces for facilitating relative rotation of the bearing surfaces.
Claim 36
Dependent Claim
26 words
A vascular occlusion material removal device as defined in claim 20 further comprising a collection portion located on the removal element for collecting removed occlusion material.
Claim 37
Dependent Claim
24 words
A vascular occlusion material removal device as defined in claim 30 wherein the collection portion comprises a retention member disposed on the removal element.
Claim 38
Dependent Claim
19 words
A vascular occlusion material removal device as defined in claim 31 wherein the retention member comprises a fabric filter.
Claim 39
Dependent Claim
23 words
A vascular occlusion material removal device as defined in claim 31 wherein the retention member comprises a polymer coated on the removal element.
Claim 40
Dependent Claim
24 words
A vascular occlusion material removal device as defined in claim 31 wherein the retention member includes an aperture for allowing fluid to flow therethrough.
Claim 41
Dependent Claim
21 words
A vascular occlusion material removal device as defined in claim 34 wherein the aperture has a diameter measuring about 5 microns.
Claim 42
Dependent Claim
25 words
A vascular occlusion material removal device as defined in claim 20 further comprising a dilatation member connected to the catheter shaft adjacent the removal element.
Claim 43
Independent Claim
163 words
A method for removing vascular occlusion material from a vascular lumen comprising the steps of: a) providing a vascular occlusion material removal device having an expandable occlusion material removal element, the material removal element having first and second ends; a catheter shaft extending to the first end of the removal element; a drive shaft disposed in and connected to the second end of the material removal element; the material removal element being expandable responsive to shifting of the drive shaft with respect to the removal element and the catheter shaft; the catheter shaft surrounding a portion of the drive shaft; b) intravascularly navigating the removal element to the occlusion material; c) energizing the removal element to remove occlusion material; d) supplying a first pressure through the drive shaft; e) supplying a second pressure through the catheter; and f) generating a pressure differential with the first pressure and the second pressure within the vascular lumen sufficient to draw removed occlusion material into the catheter.
Claim 44
Independent Claim
163 words
A method for removing vascular occlusion material from a vascular lumen comprising the steps of: a) providing a vascular occlusion material removal device having an expandable occlusion material removal element, the material removal element having first and second ends; a catheter shaft extending to the first end of the removal element; a drive shaft disposed in and connected to the second end of the material removal element; the material removal element being expandable responsive to shifting of the drive shaft with respect to the removal element and the catheter shaft; the catheter shaft surrounding a portion of the drive shaft; b) intravascularly navigating the removal element to the occlusion material; c) energizing the removal element to remove occlusion material; d) supplying a first pressure through the drive shaft; e) supplying a second pressure through the catheter; and f) generating a pressure differential with the first pressure and the second pressure within the vascular lumen sufficient to draw removed occlusion material into the catheter.
Claim 45
Dependent Claim
23 words
A method as defined in claim 37 wherein the providing step a) further comprises providing a dilation member on the material removal device.
Claim 46
Dependent Claim
17 words
A method as defined in claim 37 further comprising the step of g) inflating the dilation member.
Claim 47
Independent Claim
146 words
A method for removing vascular occlusion material from a vascular lumen comprising the steps of: a) providing a vascular occlusion material removal device having an expandable occlusion material removal element, the material removal element having first and second ends; a catheter shaft extending to the first end of the removal element; and a drive shaft operably connected to the second end of the removal element wherein the removal element includes a plurality of braided wires, including an abrasive disposed on the wires; b) intravascularly navigating the removal element to the occlusion material; c) energizing the removal element to remove occlusion material; d) supplying a first pressure through the drive shaft; e) supplying a second pressure through the catheter shaft; and f) generating a pressure differential with the first pressure and the second pressure within the vascular lumen sufficient to draw removed occlusion material into the catheter.
Claim 48
Independent Claim
146 words
A method for removing vascular occlusion material from a vascular lumen comprising the steps of: a) providing a vascular occlusion material removal device having an expandable occlusion material removal element, the material removal element having first and second ends; a catheter shaft extending to the first end of the removal element; and a drive shaft operably connected to the second end of the removal element wherein the removal element includes a plurality of braided wires, including an abrasive disposed on the wires; b) intravascularly navigating the removal element to the occlusion material; c) energizing the removal element to remove occlusion material; d) supplying a first pressure through the drive shaft; e) supplying a second pressure through the catheter shaft; and f) generating a pressure differential with the first pressure and the second pressure within the vascular lumen sufficient to draw removed occlusion material into the catheter.
Claim 49
Dependent Claim
23 words
A method as defined in claim 40 wherein the providing step a) further comprises providing a dilation member on the material removal device.
Claim 50
Dependent Claim
17 words
A method as defined in claim 41 further comprising the step of g) inflating the dilation member.
Claim 51
Dependent Claim
153 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the material removal device comprising: a) an expandable material removal element having a first and a second end and including a plurality of braid wires generally disposed between the first and second ends of the removal element, and the expandable material removal element being movable between an expanded position and a contracted position; b) a drive shaft connected to the first end of the expandable material removal element for rotating the removal element; c) a catheter surrounding a portion of the drive shaft; the catheter having a distal end for operatively variably contracting the second end of the material removal element such that the removal element is rotatable with respect to the catheter; and the catheter being shiftable with respect to the drive shaft for moving the material removal element between the expanded position and the contracted position.
Claim 52
Dependent Claim
153 words
A vascular occlusion material removal device for removing vascular occlusion material in a vascular lumen, the material removal device comprising: a) an expandable material removal element having a first and a second end and including a plurality of braid wires generally disposed between the first and second ends of the removal element, and the expandable material removal element being movable between an expanded position and a contracted position; b) a drive shaft connected to the first end of the expandable material removal element for rotating the removal element; c) a catheter surrounding a portion of the drive shaft; the catheter having a distal end for operatively variably contracting the second end of the material removal element such that the removal element is rotatable with respect to the catheter; and the catheter being shiftable with respect to the drive shaft for moving the material removal element between the expanded position and the contracted position.
Claim 53
Dependent Claim
33 words
A vascular occlusion material removal device as defined in claim 43 further comprising d) a prime mover operatively connected to the drive shaft for rotating the drive shaft with respect to the catheter.
Claim 54
Dependent Claim
30 words
A vascular occlusion material removal device as defined in claim 44 wherein the prime mover rotates the material removal element intravascularly at a rate of about 20,000 revolutions per minute.
Claim 55
Dependent Claim
35 words
A vascular occlusion material removal device as defined in claim 44 wherein the prime mover rotates the material removal element intravascularly at a rate substantially within the range of 0 to 100,000 revolutions per minute.
Claim 56
Dependent Claim
21 words
A vascular occlusion material removal device as defined in claim 44 wherein the prime mover comprises a direct current electric motor.
Claim 57
Dependent Claim
18 words
A vascular occlusion material removal device as defined in claim 43 further comprising at least eight braided wires.
Claim 58
Dependent Claim
20 words
A vascular occlusion material removal device as defined in claim 43 wherein the wires are made of a super-elastic alloy.
Claim 59
Dependent Claim
19 words
A vascular occlusion material removal device as defined in claim 43 further comprising an abrasive disposed on the wires.
Claim 60
Dependent Claim
30 words
A vascular occlusion material removal device as defined in claim 50 wherein the abrasive comprises at least one of a diamond grit and a synthetic abrasive disposed onto the wires.
Claim 61
Dependent Claim
45 words
A vascular occlusion material removal device as defined in claim 43 further comprising d) a cutting surface disposed distally of the removal element for removing vascular occlusion material, the cutting surface being connected to the removal element at the first end of the removal element.
Claim 62
Dependent Claim
41 words
A vascular occlusion material removal device as defined in claim 43 wherein the expandable material removal element has an axial length and a radius; and wherein the axial length is reducible responsive to shifting of the catheter, thereby expanding the radius.
Claim 63
Dependent Claim
41 words
A vascular occlusion material removal device as defined in claim 43 wherein the expandable removal element comprises a plurality of wires; and wherein the wires are braided thereby enabling the wires to store spring energy during expansion of the removal element.
Claim 64
Dependent Claim
22 words
A vascular occlusion removal device as defined in claim 43 further comprising means for limiting expansion of the expandable material removal element.
Claim 65
Dependent Claim
99 words
A vascular occlusion material removal device as defined in claim 43 wherein the drive shaft comprises a coil having a proximal end and a distal end; wherein a braid having a proximal end and a distal end surrounds at least a portion of the coil; wherein the proximal end of the braid is attached to the proximal end of the coil; wherein the distal end of the braid is attached to the coil at a location offset proximally of the distal end of the coil; and wherein the braid is tensioned between the proximal end and distal end thereof.
Claim 66
Dependent Claim
86 words
A vascular occlusion material removal device as defined in claim 43 wherein the drive shaft comprises a coil having a proximal end and a distal end; wherein a braid having a proximal end and a distal end surrounds the coil; wherein the proximal end of the braid is attached to the proximal end of the coil; wherein the distal end of the braid is attached to the distal end of the coil; and wherein the braid is tensioned between the proximal end and distal end thereof.
Claim 67
Dependent Claim
49 words
A vascular occlusion material removal device as defined in claim 43 wherein the drive shaft comprises a cylindrical portion having a hollow interior and a coiled portion; and further comprising an aperture in the cylindrical portion for allowing fluid to flow into the hollow interior of the cylindrical portion.
Claim 68
Dependent Claim
53 words
A vascular occlusion material removal device as defined in claim 58 further comprising a manifold assembly; further comprising a lumen within the manifold assembly for accepting the cylindrical portion; and further comprising a fluid seal within the lumen for insuring that fluid within the lumen flows through the aperture into the hollow interior.
Claim 69
Dependent Claim
46 words
A vascular occlusion material removal device as defined in claim 58 wherein the cylindrical portion has a proximal end; further comprising a fluid seal located at the proximal end of the cylindrical portion for limiting fluid flow proximally of the proximal end of the cylindrical portion.
Claim 70
Dependent Claim
51 words
A vascular occlusion removal device as defined in claim 43 further comprising: d) a removal element movement control mechanism for positively controlling movement of the removal element between the expanded position and the contracted position, the control mechanism being located at an end of the drive shaft opposite the removal element.
Claim 71
Dependent Claim
64 words
A vascular occlusion material removal device as defined in claim 61 wherein the removal element movement control mechanism comprises an actuation portion engagable by a physician; the actuation portion being operatively connected to the catheter for transferring force applied to the actuation portion to the catheter; and a tab operatively connected to the actuation portion for allowing positive incremental shifting of the catheter. PG,78
Claim 72
Dependent Claim
47 words
A vascular occlusion material removal device as defined in claim 43 further comprising a balloon dilating member connected to the catheter for performing at least one of centering the device intravascularly, stabilizing the device intravascularly, occluding fluid flow through a vascular lumen, and angioplasticly displacing occlusion material.
References Cited (Backward Citations)
US1612697A
Cited
US2498692A
Cited
US2621651A
Cited
DE867144C
Cited
US2816552A
Cited
US3416531A
Cited
US3320957A
Cited
US3433226A
Cited
US3352303A
Cited
US3485234A
Cited
US3605725A
Cited
US3568659A
Cited
US3623483A
Cited
US3692029A
Cited
US4018576A
Cited
US3894673A
Cited
US3773034A
Cited
US3789952A
Cited
US3868956A
Cited
US3788318A
Cited
US3923065A
Cited
US3968800A
Cited
US3965909A
Cited
US3996938A
Cited
US4046150A
Cited
US4137906A
Cited
US4195637A
Cited
US4177815A
Cited
US4323071A
Cited
US4323071B1
Cited
GB2020557A
Cited
US4307722A
Cited
US4347846A
Cited
US4445509A
Cited
WO1983003752A1
Cited
US4465072A
Cited
EP0117519A1
Cited
US4607618A
Cited
US4572186A
Cited
US4842579A
Cited
US5002553A
Cited
US4732154A
Cited
US4979939A
Cited
US4819634A
Cited
US4842579B1
Cited
US4894051A
Cited
US5135531A
Cited
US5024651A
Cited
US4886490A
Cited
US4679557A
Cited
US4577631A
Cited
US4990134A
Cited
US4990134B1
Cited
US4696667A
Cited
EP0254414A1
Cited
US5041082A
Cited
US5314407A
Cited
US4838853A
Cited
US4883458A
Cited
US5116350A
Cited
US5116350B1
Cited
US4784636A
Cited
US5165421A
Cited
US4895166A
Cited
US4886061A
Cited
US4895560A
Cited
US4885003A
Cited
US4921484A
Cited
US5011488A
Cited
US5007896A
Cited
US4957482A
Cited
US4966604A
Cited
US5100425A
Cited
US5009659A
Cited
US5030201A
Cited
WO1991017714A1
Cited
US5154724A
Cited
WO1992003097A1
Cited
WO1992003098A1
Cited
WO1993001849A1
Cited
EP0533321A2
Cited
US5176693A
Cited
WO1994010919A1
Cited
US5314438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-12 | 1999-08-14 | 2000-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-12 | 2003-08-14 | 2004-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-12 | 2007-08-14 | 2008-02-13 | $7700.00 | Window Closed / Lapsed |