Patent US5330496A successfully refreshed from Google Patents.
US5330496A
Expired / Lapsed
US
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Vascular catheter assembly for tissue penetration and for cardiac stimulation and methods thereof
Assignee: Cardiac Pacemakers Inc
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Filing: 1991-05-06
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Granted: 1994-07-19
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Expires: 2011-05-06
Abstract
Abstract A vascular catheter apparatus for penetration through tissue and for cardiac stimulation, and a methods thereof, are disclosed. The apparatus includes a tubular member having a lumen, and a blunt-end stylet within the lumen. An actuation mechanism causes axial movement of the stylet relative to the catheter tube such that the blunt end of the stylet separate tissue for passage of the catheter through the bored tissue. The stylet itself, or an additional stylet, includes a proximal electrode adapted to be oriented in a cardiac chamber and a distal electrode adapted to be oriented adjacent to the epicardium of the heart to cause cardiac stimulation.
Inventors
- 👤 Clifton A. Alferness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:20
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61B5/287; A61B17/00; A61B17/32; A61B17/320016; A61M; A61M25/00; A61M25/01; A61M25/0105; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0587; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B18/00; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392; A61M25/0113
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
136 words
A vascular catheter apparatus for blunt boring through inner cardiac tissue and into the pericardial space comprising: a catheter having a lumen therein, said catheter having a proximal end and a tapered distal end, said catheter insertible through the vascular system to rest in a cardiac chamber adjacent to inner cardiac tissue; a stylet within said lumen, said stylet having a proximal end and a blunt probe as a distal end; and a probe actuation means including a handle and a spring-biased means on said handle and attached to said proximal end of said stylet wherein movement of said spring-biased means relative to said handle causes axial movement of said stylet relative to said catheter such that said blunt probe separates inner cardiac tissue and for passage through the bored tissue and into the pericardial space.
Claim 2
Dependent Claim
136 words
A vascular catheter apparatus for blunt boring through inner cardiac tissue and into the pericardial space comprising: a catheter having a lumen therein, said catheter having a proximal end and a tapered distal end, said catheter insertible through the vascular system to rest in a cardiac chamber adjacent to inner cardiac tissue; a stylet within said lumen, said stylet having a proximal end and a blunt probe as a distal end; and a probe actuation means including a handle and a spring-biased means on said handle and attached to said proximal end of said stylet wherein movement of said spring-biased means relative to said handle causes axial movement of said stylet relative to said catheter such that said blunt probe separates inner cardiac tissue and for passage through the bored tissue and into the pericardial space.
Claim 3
Dependent Claim
41 words
The vascular catheter apparatus of claim 1 further comprising: an external tubular sleeve having an internal diameter greater than the external diameter of said catheter, said external tubular sleeve adapted to be placed over said catheter and through the bored tissue.
Claim 4
Dependent Claim
59 words
The vascular catheter apparatus of claim 1 further comprising: an internal tubular sleeve having an external diameter less than the internal diameter of said catheter and having an internal diameter greater than the external diameter of said stylet, said internal tubular sleeve adapted to be placed in said catheter and over said stylet for passage through the bored tissue.
Claim 5
Dependent Claim
50 words
The vascular catheter apparatus of claim 1 further comprising: an optical sensing means adjacent said blunt probe of said stylet; and an optical receiving means for receiving signals from said optical sensing means showing the location of said blunt probe in the cardiac chambers, the cardiac tissue and pericardial space.
Claim 6
Dependent Claim
89 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; and an external tubular sleeve having a internal diameter greater than the external diameter of said catheter, said external tubular sleeve adapted to be placed over said catheter and through the tissue.
Claim 7
Dependent Claim
89 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; and an external tubular sleeve having a internal diameter greater than the external diameter of said catheter, said external tubular sleeve adapted to be placed over said catheter and through the tissue.
Claim 8
Dependent Claim
109 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; and an internal tubular sleeve having an external diameter less than the internal diameter of said catheter and having an internal diameter greater than the eternal diameter of said penetration means, said internal tubular sleeve adapted to be placed in said catheter and over said penetration means for passage through the tissue.
Claim 9
Dependent Claim
109 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; and an internal tubular sleeve having an external diameter less than the internal diameter of said catheter and having an internal diameter greater than the eternal diameter of said penetration means, said internal tubular sleeve adapted to be placed in said catheter and over said penetration means for passage through the tissue.
Claim 10
Dependent Claim
82 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; an optical sensing means adjacent said distal end of said penetration means; and an optical receiving means for receiving signals from said optical sensing means.
Claim 11
Dependent Claim
82 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; an optical sensing means adjacent said distal end of said penetration means; and an optical receiving means for receiving signals from said optical sensing means.
Claim 12
Dependent Claim
97 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; said actuation means comprising a handle and a spring-biased means on said handle and attached to said penetration means, wherein movement of said spring-biased means relative to said handle causes axial movement of said penetration means relative to said catheter.
Claim 13
Dependent Claim
97 words
A vascular catheter apparatus for penetrating tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a distal end; an actuation means for movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the tissue for passage through the tissue; said actuation means comprising a handle and a spring-biased means on said handle and attached to said penetration means, wherein movement of said spring-biased means relative to said handle causes axial movement of said penetration means relative to said catheter.
Claim 14
Dependent Claim
90 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein and having a proximal end and a distal end, said distal end being tapered; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 15
Dependent Claim
90 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein and having a proximal end and a distal end, said distal end being tapered; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 16
Dependent Claim
107 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; an external tubular sleeve having an internal diameter greater than the external diameter of said catheter, said external tubular sleeve adapted to be placed over said catheter and through the tissue; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 17
Dependent Claim
107 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; an external tubular sleeve having an internal diameter greater than the external diameter of said catheter, said external tubular sleeve adapted to be placed over said catheter and through the tissue; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 18
Dependent Claim
128 words
A vascular catheter apparatus for penetrating blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; an internal tubular sleeve having an external diameter less than the internal diameter of said catheter and having an internal diameter greater than the external diameter of said penetration means, said internal tubular sleeve adapted to be placed in said catheter and over said penetration means for passage through the tissue; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 19
Dependent Claim
128 words
A vascular catheter apparatus for penetrating blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; an internal tubular sleeve having an external diameter less than the internal diameter of said catheter and having an internal diameter greater than the external diameter of said penetration means, said internal tubular sleeve adapted to be placed in said catheter and over said penetration means for passage through the tissue; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 20
Dependent Claim
28 words
The vascular catheter apparatus of claim 11 wherein said internal tubular sleeve is urged into the tissue by axial movement of said penetration means relative to said catheter.
Claim 21
Dependent Claim
62 words
The vascular catheter apparatus of claim 12 wherein said internal tubular sleeve has a proximal end and a distal end, said apparatus further comprising: a biasing means adjacent said distal end of said internal tubular sleeve, said biasing means urging said distal end radially outward from said catheter tube to contact the tissue when said internal tubular sleeve is in the tissue.
Claim 22
Dependent Claim
33 words
The vascular catheter apparatus of claim 13 further comprising: teeth adjacent said distal end of said internal tubular sleeve for gripping the tissue when said internal tubular sleeve is in the penetrated tissue.
Claim 23
Dependent Claim
100 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; an optical sensing means adjacent said distal end of said penetration means; an optical receiving means for receiving signals from said optical sensing means; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 24
Dependent Claim
100 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; an optical sensing means adjacent said distal end of said penetration means; an optical receiving means for receiving signals from said optical sensing means; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue.
Claim 25
Dependent Claim
21 words
The vascular catheter apparatus of claim 15 wherein said optical sensing means is in said distal end of said penetration means.
Claim 26
Dependent Claim
28 words
The vascular catheter apparatus of claim 15 wherein said catheter has a proximal end and a distal end and said optical sensing means is in said distal end.
Claim 27
Dependent Claim
116 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue, said actuation means comprising a handle and a spring-biased means on said handle and attached to said penetration means, wherein movement of said spring-biased means relative to said handle causes axial movement of said penetration means relative to said catheter.
Claim 28
Dependent Claim
116 words
A vascular catheter apparatus for blunt boring through cardiac muscle and vascular wall tissue comprising: a catheter having a lumen therein; a penetration means within said lumen, said penetration means having a blunt distal end with helical threads; and an actuation means for repeated axial movement of said penetration means relative to said catheter such that said distal end of said penetration means penetrates the cardiac muscle and vascular wall tissue for passage through the tissue, said actuation means comprising a handle and a spring-biased means on said handle and attached to said penetration means, wherein movement of said spring-biased means relative to said handle causes axial movement of said penetration means relative to said catheter.
Claim 29
Dependent Claim
21 words
The vascular catheter apparatus of claim 18 wherein said spring-biased means is a lever attached to said handle by a fulcrum.
Claim 30
Dependent Claim
33 words
The vascular catheter apparatus of claim 18 wherein said handle is substantially elongate, said handle having a longitudinal axis with a bore therethrough, and said spring-biased means is a shaft in said bore.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |