Patent US5041098A successfully refreshed from Google Patents.
US5041098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular access system for extracorporeal treatment of blood
Assignee: GRANTADLER Corp
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Filing: 1989-05-19
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Granted: 1991-08-20
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Expires: 2009-05-19
Abstract
Abstract Disclosed are implantable, vascular access ports and vascular access systems including such ports. These ports include a biocompatible housing having at least one internal open-faced chamber extending along a reference axis, and defined by a concave sidewall and a bottom wall. The concave sidewall is concave in the direction of the axis and forms a lateral sidewall for the chamber. The port further includes a septum of biocompatible, self-resealing, penetrable material affixed to the housing and spanning the periphery of the open face of the chamber. A cannula is attached at a first end to the housing and extends laterally from that end. Its second end is adapted to receive a catheter. The cannula further includes internal walls defining a channel extending from the first end, along a channel axis from a point on the lateral boundary of, and in communication with, the chamber to the second end.
Inventors
- 👤 David A. Loiterman
- 👤 Paul V. Fenton, Jr.
- 👤 Thomas M. Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:58
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M2039/0211
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
154 words
An implantable vascular access device including a port comprising: (a) a biocompatible housing having an internal open-faced chamber extending along a reference axis and defined by a sidewall forming a lateral boundary and being concave in the direction of said axis, and a bottom wall; (b) a septum affixed to said housing and spanning the periphery of the open face of said chamber, said septum including a biocompatible, self-resealing, penetrable material; and (c) a cannula attached at a first end thereof to said housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter, said cannula further having internal walls defining a channel extending from said first end, along a channel axis from a point on said lateral boundary of, and in communication with, said chamber, to said second end, wherein the transition between said lateral boundary of said chamber and said internal walls of said canula is smooth.
Claim 2
Dependent Claim
154 words
An implantable vascular access device including a port comprising: (a) a biocompatible housing having an internal open-faced chamber extending along a reference axis and defined by a sidewall forming a lateral boundary and being concave in the direction of said axis, and a bottom wall; (b) a septum affixed to said housing and spanning the periphery of the open face of said chamber, said septum including a biocompatible, self-resealing, penetrable material; and (c) a cannula attached at a first end thereof to said housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter, said cannula further having internal walls defining a channel extending from said first end, along a channel axis from a point on said lateral boundary of, and in communication with, said chamber, to said second end, wherein the transition between said lateral boundary of said chamber and said internal walls of said canula is smooth.
Claim 3
Dependent Claim
91 words
An access port according to claim 1, wherein said housing comprises lock means formed adjacent to said port for releasably engaging a flange of a mating twist-lockable connection, said lock means including a region of the surface which forms the boundary of said housing, said region defining a void region adjacent to said port exterior to said chamber, and including means for releasably engaging said flange by a partial revolution of such connection, whereby the chamber may be placed in fluid communication with a catheter having such a mating twist-lockable connection.
Claim 4
Dependent Claim
48 words
An access port according to claim 2, wherein said lock means includes a means for guiding said catheter connector for rotational motion about an axis passing through said port, and means for capturing said connector so as to prevent motion of said connector along said axis when rotated.
Claim 5
Dependent Claim
82 words
An access port according to claim 1, wherein said housing includes a first body member and a second body member, said first body member including said sidewall and said bottom wall having a cylindrical outer side surface, and said second body member including means for supporting said septum and being annular and having a cylindrical inner side surface, wherein said outer side surface of said first body member is adapted to interfit with said inner side surface of said second body member.
Claim 6
Dependent Claim
144 words
An access port according to claim 1, wherein said housing includes a second internal open face chamber extending along a second reference axis and defined by a second sidewall forming a second lateral boundary and being concave in the direction of said axis, and said access port further comprising: a second septum affixed to said housing and spanning the periphery of the open face of said second chamber, said second septum including a biocompatible, self-resealing, penetrable material; and a second cannula attached at a first end thereof to said housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter, said second cannula further having internal walls defining a second channel extending from said first end, along a channel axis from a point on said lateral boundary of, and in communication with, said second chamber, to said second end.
Claim 7
Dependent Claim
46 words
An access port according to claim 1, wherein the channel of said cannula has a radius R1 at said first end and a radius R2 at said second end, where R1 is greater than R2, and said catheter has a central passage with a radius R2.
Claim 8
Dependent Claim
216 words
An implantable vascular access system comprising: (a) a vascular access port including: a biocompatible housing having an internal open-faced chamber extending along a reference axis and defined by a concave sidewall forming a lateral boundary and being concave in the direction of said axis, and a bottom wall, a septum affixed to said housing and spanning the periphery of the open face of said chamber, said septum including a biocompatible, self-resealing, penetrable material, a cannula attached at a first end thereof to said housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter, said cannula further having internal walls defining a channel extending from said first end, along a channel axis from a point on said lateral boundary of, and in communication with, said chamber, to said second end, wherein the transition between said lateral boundary of said chamber and said internal walls of said canula is smooth; (b) a catheter having a central passage and an entry port defining a flow path to said central passage along a central axis; and (c) a coupling means for detachably coupling said cannula and said entry port, and for selectively establishing a continuous flow path between said chamber and said central passage with said channel axis and said central axis being coaxial.
Claim 9
Dependent Claim
216 words
An implantable vascular access system comprising: (a) a vascular access port including: a biocompatible housing having an internal open-faced chamber extending along a reference axis and defined by a concave sidewall forming a lateral boundary and being concave in the direction of said axis, and a bottom wall, a septum affixed to said housing and spanning the periphery of the open face of said chamber, said septum including a biocompatible, self-resealing, penetrable material, a cannula attached at a first end thereof to said housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter, said cannula further having internal walls defining a channel extending from said first end, along a channel axis from a point on said lateral boundary of, and in communication with, said chamber, to said second end, wherein the transition between said lateral boundary of said chamber and said internal walls of said canula is smooth; (b) a catheter having a central passage and an entry port defining a flow path to said central passage along a central axis; and (c) a coupling means for detachably coupling said cannula and said entry port, and for selectively establishing a continuous flow path between said chamber and said central passage with said channel axis and said central axis being coaxial.
Claim 10
Dependent Claim
74 words
A vascular access system according to claim 7, wherein said coupling means includes a resilient interface element disposed about and extending from said entry port, wherein the extending portion of said interface element is adapted to frictionally fit over the outer surface of said second end of said cannula, whereby said walls defining said channel at said second end and the inner surface of said central passage establish a substantially smooth bounded flow path.
Claim 11
Dependent Claim
15 words
A vascular access system according to claim 7, wherein said catheter has wirewound, reinforce sidewalls.
Claim 12
Dependent Claim
20 words
A vascular access system according to claim 7, wherein said end of said catheter opposite said entry port is beveled.
Claim 13
Dependent Claim
26 words
A vascular access system according to claim 10, wherein said end of said catheter opposite said entry port includes at least one lateral aperture adjacent thereto.
Claim 14
Dependent Claim
26 words
A vascular access system according to claim 7, wherein said end of said catheter opposite said entry port includes at least one lateral aperture adjacent thereto.
Claim 15
Dependent Claim
19 words
A vascular access system according to claim 7 further comprising a non-coring needle adapted to selectively penetrate said septum.
Claim 16
Dependent Claim
25 words
A vascular access system according to claim 13, wherein said needle includes a trocar point and includes at least one lateral aperture near said point.
Claim 17
Dependent Claim
25 words
A vascular access system according to claim 13, wherein said needle includes a solid point and includes at least one lateral aperture near said point.
Claim 18
Dependent Claim
145 words
A vascular access system according to claim 7 wherein said housing includes a second internal open face chamber extending along a second reference axis and defined by a second sidewall forming a second lateral boundary and being concave in the direction of said axis, and said access port further comprising: a second septum affixed to said housing and spanning the periphery of the open face of said second chamber, said second septum including a biocompatible, self-resealing, penetrable material; and a second cannula attached at a first end thereof to said housing and extending laterally therefrom, and having a second end thereof adapted to receive a catheter, said second cannula further having internal walls defining a second channel extending from said first end, along a channel axis from a point on said lateral boundary of, and in communication with, said second chamber, to said second end.
Claim 19
Dependent Claim
47 words
A vascular access system according to claim 7, wherein the channel of said cannula has a radius R1 at said first end and a radius R2 at said second end, where R1 is greater than R2, and said catheter has a central passage having a radius R2.
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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) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |