US5674232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter and method of use thereof
Assignee: Individual
•
Filing: 1996-09-20
•
Granted: 1997-10-07
•
Expires: 2016-09-20
Abstract
Abstract An endarterectomy catheter and method for removing obstructions from an artery comprises a cylindrical, oval, kidney shaped or other shape housing, the housing having an opening inside which a primary shear is movable. The primary shear is razor sharp and cylindrical or other shaped with a smooth or serrated or threaded finish on the inner diameter and movable by means of a firing wire connected by an adapter to a trigger mechanism, which moves the primary shear backward and forward within the housing to excise, encapsulate and store obstructions that protrude into the opening. The primary shear can also be moved by an electric wire and solenoid, hydraulic system or other means. A guide wire positions the catheter in an artery fallopian tube or other lumen and an inflatable saline anchor or anchors stabilize the catheter against the obstruction to execute a precise cut.
Inventors
- 👤 Alexander George Halliburton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:03
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
214 words
A catheter for excising obstructions from within a body channel comprising: a housing adapted for entry into the body channel, the housing including a forward end and a rearward end and having an opening for accepting an obstruction; a primary shear for cutting the obstruction, the primary shear including a forward end and a rearward end and being disposed within the housing and being moveable forward and backward across the opening; an elongated flexible thin solid wire connected to the primary shear and operable from outside the body while the housing is located in the body channel, an urging means cooperable with said elongated flexible thin solid wire to cause propulsive movement of said elongated flexible thin solid wire, release means for holding the urging means in a fixed position, said release means being manually actuatable to release the urging means from the fixed position to propel the elongated flexible thin solid wire to move in one direction without rotation for one stroke only such that the elongated flexible thin solid wire propels the primary shear in the housing in said one direction, without rotation, for said one stroke only toward the forward end of the housing across the opening in a guillotine cutting action; and means for locating the housing in the channel.
Claim 2
Dependent Claim
214 words
A catheter for excising obstructions from within a body channel comprising: a housing adapted for entry into the body channel, the housing including a forward end and a rearward end and having an opening for accepting an obstruction; a primary shear for cutting the obstruction, the primary shear including a forward end and a rearward end and being disposed within the housing and being moveable forward and backward across the opening; an elongated flexible thin solid wire connected to the primary shear and operable from outside the body while the housing is located in the body channel, an urging means cooperable with said elongated flexible thin solid wire to cause propulsive movement of said elongated flexible thin solid wire, release means for holding the urging means in a fixed position, said release means being manually actuatable to release the urging means from the fixed position to propel the elongated flexible thin solid wire to move in one direction without rotation for one stroke only such that the elongated flexible thin solid wire propels the primary shear in the housing in said one direction, without rotation, for said one stroke only toward the forward end of the housing across the opening in a guillotine cutting action; and means for locating the housing in the channel.
Claim 3
Dependent Claim
14 words
The catheter of claim i wherein the housing is a hollow, substantially cylindrical body.
Claim 4
Dependent Claim
21 words
The catheter of claim 2 wherein the housing includes means for allowing free movement of body channel fluid through the housing.
Claim 5
Dependent Claim
27 words
The catheter of claim 3 wherein the housing comprises means to prevent the release of parts of the excised obstruction from the housing into the body channel.
Claim 6
Dependent Claim
13 words
The catheter of claim 2 wherein the opening extends circumferentially around the housing.
Claim 7
Dependent Claim
30 words
The catheter of claim 5 including an inner tubular member in said housing and wherein the forward end is in communication with the rearward end through the inner tubular member.
Claim 8
Dependent Claim
17 words
The catheter of claim 6 wherein the primary shear is slidably mounted on the inner tubular member.
Claim 9
Dependent Claim
24 words
The catheter of claim 2 wherein the urging means further comprises a spring acting between the rearward end of the housing and the shear.
Claim 10
Dependent Claim
33 words
The catheter of claim 2 wherein the primary shear is hollow and substantially cylindrical and fits concentrically within the housing, said primary shear being sized to fit in close proximity to the housing.
Claim 11
Dependent Claim
33 words
The catheter of claim 9 wherein the primary shear has a hollow ground cutting edge disposed directly adjacent the housing and the opening is sharpened about its boundaries to enhance the guillotine action.
Claim 12
Dependent Claim
19 words
The catheter of claim 9 wherein the primary shear has a roughened inner surface for engaging the excised obstruction.
Claim 13
Dependent Claim
86 words
The catheter of claim 9 wherein said opening has a sharpened peripheral portion to form a secondary shear that cooperates with the primary shear when the primary shear moves across the opening to create the guillotine cutting action and wherein a packing stub is provided within the housing spaced from the secondary shear such that the primary shear is receivable in the space between the packing stub and the secondary shear to push and pack the excised parts of the obstruction during the guillotine cutting action.
Claim 14
Dependent Claim
67 words
The catheter of claim 2 including a base clamp attached to the primary shear and wherein the elongated flexible thin solid wire is attached to the primary shear by means of the base clamp which acts to distribute the force transmitted by the elongated flexible thin solid wire about the radius of the primary shear and thereby stabilize the movement of the primary shear within the housing.
Claim 15
Dependent Claim
24 words
The catheter of claim 13 wherein the base clamp has apertures to allow the free movement of body channel fluids through the base clamp.
Claim 16
Dependent Claim
34 words
The catheter of claims 1 including a protective sleeve and wherein the elongated flexible thin solid wire and the means for locating the housing in the channel are accommodated together in the protective sleeve.
Claim 17
Dependent Claim
25 words
The catheter of claim 15 wherein the protective sleeve is sized to act as a conduit for a combination of fluid tubes and stabilizing wires.
Claim 18
Dependent Claim
18 words
The catheter of claim 15 wherein the rearward end of the housing opens directly into the protective sleeve.
Claim 19
Dependent Claim
17 words
The catheter of claim 1 further comprising anchoring means for anchoring the housing within the body channel.
Claim 20
Dependent Claim
38 words
The catheter of claim 18 wherein said anchoring means comprises a plurality of fluid fillable bladders disposed about the housing opposite the opening such that said bladders, when filled, urge the opening of the housing toward the obstruction.
Claim 21
Independent Claim
129 words
A method of excising an obstruction from a body channel, the method comprising: locating a housing within the body channel adjacent an obstruction, the housing having an opening for accepting an obstruction and a shear moveable across the opening; positioning the housing via a flexible tube such that the obstruction protrudes into the opening of the housing; urging the shear in a forward direction without rotation for one stroke only toward a forward end of the housing across the opening by means of a longitudinal propulsive force applied to the shear by a flexible thin solid firing wire such that the shear is propelled in a single stroke to excise at least part of the obstruction with a guillotine cutting actions and, removing the housing from the body channel.
Claim 22
Independent Claim
129 words
A method of excising an obstruction from a body channel, the method comprising: locating a housing within the body channel adjacent an obstruction, the housing having an opening for accepting an obstruction and a shear moveable across the opening; positioning the housing via a flexible tube such that the obstruction protrudes into the opening of the housing; urging the shear in a forward direction without rotation for one stroke only toward a forward end of the housing across the opening by means of a longitudinal propulsive force applied to the shear by a flexible thin solid firing wire such that the shear is propelled in a single stroke to excise at least part of the obstruction with a guillotine cutting actions and, removing the housing from the body channel.
References Cited (Backward Citations)
SU240923A1
Cited
FR1161400A
Cited
US3173414A
Cited
US3289669A
Cited
US3401684A
Cited
DE1766252A1
Cited
US3561429A
Cited
US3590808A
Cited
US3606878A
Cited
DE2453058A1
Cited
DE3035416A1
Cited
US4445509A
Cited
US4781186A
Cited
EP0352872A2
Cited
US4616648A
Cited
US4771774A
Cited
US4669469A
Cited
EP0291170A1
Cited
US4819635A
Cited
WO1989005611A1
Cited
WO1990002523A1
Cited
US4994067A
Cited
US5085662A
Cited
US5172702A
Cited
WO1991012847A1
Cited
EP0582005A1
Cited
US5242460A
Cited
WO1992014413A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-06 | 2001-04-07 | 2001-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-06 | 2005-04-07 | 2005-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-06 | 2009-04-07 | 2009-10-07 | $7700.00 | Window Closed / Lapsed |