Patent US5792104A successfully refreshed from Google Patents.
US5792104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-reservoir vascular access port
Assignee: Medtronic Inc
•
Filing: 1996-12-10
•
Granted: 1998-08-11
•
Expires: 2016-12-10
Abstract
Abstract A subcutaneously implantable vascular access port includes a base which defines a plurality of fluid cavities separated by a dividing wall configured to provide an outlet duct for each fluid cavity, wherein the outlet ducts are staggered along the length of the dividing wall, a cap configured to receive the base and which includes a plurality of septum access apertures aligned with the fluid cavities, and a single self-sealing septum captured between the cap and the base. An outlet stem exits the base and communicates with the fluid cavities therein. The outlet stem has two prongs formed in a side-by-side configuration extending outwardly from the base. Fluid injected into a fluid cavity through the septum flows through a smooth transition region in which the cross-sectional area is smoothly reduced from the corresponding fluid cavity. A locking sleeve provides radial inward pressure upon the catheter which is slid over the outlet stem, thereby insuring that the catheter remains mounted on the outlet stem.
Inventors
- 👤 Lori Cone Speckman
- 👤 David A. Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M2039/0211; A61M2039/0214; A61M2039/0226; A61M5/00; A61M5/14; A61M5/1407; A61M5/1408
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
106 words
A plural reservoir vascular access port, comprising: a base defining a plurality of fluid cavities separated by a dividing wall configured to provide an outlet duct for each fluid cavity, wherein the outlet ducts are staggered along the length of the dividing wall; a cap configured to receive the base, wherein the cap includes a plurality of septum access apertures aligned with the plurality of fluid cavities; a septum captured between the cap and the base and providing a fluid seal between the plurality of fluid cavities and the plurality of septum access apertures; and an outlet from each fluid cavity outlet duct through the base.
Claim 2
Dependent Claim
106 words
A plural reservoir vascular access port, comprising: a base defining a plurality of fluid cavities separated by a dividing wall configured to provide an outlet duct for each fluid cavity, wherein the outlet ducts are staggered along the length of the dividing wall; a cap configured to receive the base, wherein the cap includes a plurality of septum access apertures aligned with the plurality of fluid cavities; a septum captured between the cap and the base and providing a fluid seal between the plurality of fluid cavities and the plurality of septum access apertures; and an outlet from each fluid cavity outlet duct through the base.
Claim 3
Dependent Claim
13 words
The access port of claim 1, wherein the base includes elastomer-filled suture holes.
Claim 4
Dependent Claim
14 words
The access port of claim 2, wherein the suture holes are filed with silicone.
Claim 5
Dependent Claim
36 words
The access port of claim 1, wherein the base is formed of a needle-impenetrable material, and has a flat interior floor and walls normal to and upstanding therefrom, said walls defining the plurality of fluid cavities.
Claim 6
Dependent Claim
19 words
The access port of claim 4, wherein upper surfaces of the walls support the septum thereon and are co-planar.
Claim 7
Dependent Claim
32 words
The access port of claim 4, wherein at least one of the plurality of fluid cavities has a cross-section in a plane parallel to the floor of the base that is non-circular.
Claim 8
Dependent Claim
15 words
The access port of claim 1, wherein the cap includes at least one palpation ridge.
Claim 9
Dependent Claim
87 words
The access port of claim 1, wherein the outlet comprises an outlet stem connected at a proximal end thereof with the base and configured at a distal end thereof to receive a proximal end of a plural lumen catheter, the stem enclosing a plurality of channels which extend in side-by-side relationship between said distal end of said stem and the respective fluid cavity outlet duct, the channels being of different lengths and separated laterally a distance substantially equal to the lateral separation of lumens in the catheter.
Claim 10
Dependent Claim
20 words
The access port of claim 8, including means for locking the proximal end of the catheter to the outlet stem.
Claim 11
Dependent Claim
47 words
The access port of claim 9, wherein the locking means includes a rigid catheter lock slidable over the proximal end of the catheter for positioning adjacent to the base, and a resiliently flexible strain relief sleeve positionable over adjoining portions of the catheter lock and the catheter.
Claim 12
Dependent Claim
31 words
The access port of claim 10, wherein the catheter lock includes a distal tube section having a securement ridge which is fitted within an internal groove of the strain relief sleeve.
Claim 13
Dependent Claim
291 words
An implantable access port capable of being implanted beneath the skin of a patient, the access port enabling repeated, non-destructive fluid communication between the tip of a hypodermic needle piercing the skin of the patient and a proximal end of a selected one of the lumens of a plural lumen catheter implanted in the body of the patient coupled to the access port, thereby to selectively inject a fluid from the needle into the body of the patient by producing a flow of the fluid from the tip of the needle, through the access port, and along the selected one of the lumens to the distal end of the catheter, or to selectively withdraw fluid from the patient through the needle, said access port comprising: a needle impenetrable base defining a plurality of fluid cavities separated by a dividing wall configured to provide an outlet duct for each fluid cavity, wherein the outlet ducts are staggered along the length of the dividing wall; a cap configured to receive the base, wherein the cap includes a plurality of septum access apertures aligned with the plurality of fluid cavities; a septum captured between the cap and the base and providing a fluid seal between the plurality of fluid cavities and the plurality of septum access apertures; and an outlet stem connected at a proximal end thereof with the base and configured at a distal end thereof to receive the proximal end of the catheter, the stem enclosing a plurality of channels which extend in side-by-side relationship between said distal end of said stem and a respective fluid cavity outlet duct, the channels being of different lengths and separated laterally a distance substantially equal to the lateral separation of the lumens in the catheter.
Claim 14
Dependent Claim
291 words
An implantable access port capable of being implanted beneath the skin of a patient, the access port enabling repeated, non-destructive fluid communication between the tip of a hypodermic needle piercing the skin of the patient and a proximal end of a selected one of the lumens of a plural lumen catheter implanted in the body of the patient coupled to the access port, thereby to selectively inject a fluid from the needle into the body of the patient by producing a flow of the fluid from the tip of the needle, through the access port, and along the selected one of the lumens to the distal end of the catheter, or to selectively withdraw fluid from the patient through the needle, said access port comprising: a needle impenetrable base defining a plurality of fluid cavities separated by a dividing wall configured to provide an outlet duct for each fluid cavity, wherein the outlet ducts are staggered along the length of the dividing wall; a cap configured to receive the base, wherein the cap includes a plurality of septum access apertures aligned with the plurality of fluid cavities; a septum captured between the cap and the base and providing a fluid seal between the plurality of fluid cavities and the plurality of septum access apertures; and an outlet stem connected at a proximal end thereof with the base and configured at a distal end thereof to receive the proximal end of the catheter, the stem enclosing a plurality of channels which extend in side-by-side relationship between said distal end of said stem and a respective fluid cavity outlet duct, the channels being of different lengths and separated laterally a distance substantially equal to the lateral separation of the lumens in the catheter.
Claim 15
Dependent Claim
13 words
The access port of claim 12, wherein the base includes silicone-filled suture holes.
Claim 16
Dependent Claim
34 words
The access port of claim 12, wherein the base includes a flat interior floor and walls normal to and upstanding therefrom, said walls including the dividing wall and defining the plurality of fluid cavities.
Claim 17
Dependent Claim
19 words
The access port of claim 14, wherein upper surfaces of the walls support the septum thereon and are co-planar.
Claim 18
Dependent Claim
15 words
The access port of claim 12, wherein the cap includes at least one palpation ridge.
Claim 19
Dependent Claim
91 words
The access port of claim 12, including means for locking the proximal end of the catheter to the outlet stem, wherein the locking means includes a rigid catheter lock slidable over the proximal end of the catheter and the adjacent outlet stem for positioning adjacent to the base, and a resiliently flexible strain relief sleeve positionable over adjoining portions of the catheter lock and the catheter, wherein the catheter lock includes a distal tube section having a securement ridge which is fitted within an internal groove of the strain relief sleeve.
Claim 20
Dependent Claim
326 words
An implantable access port capable of being implanted beneath the skin of a patient, the access port enabling repeated, non-destructive fluid communication between the tip of a hypodermic needle piercing the skin of the patient and a proximal end of a selected one of the lumens of a dual lumen catheter implanted in the body of the patient coupled to the access port, thereby to selectively inject a fluid from the needle into the body of the patient by producing a flow of the fluid from the tip of the needle, through the access port, and along the selected one of the lumens to the distal end of the catheter, or to selectively withdraw fluid from the patient through the needle, said access port comprising: a needle-impenetrable base having a flat interior floor and walls normal to and upstanding therefrom, the walls defining a first fluid cavity and a second fluid cavity separated by a dividing wall configured to provide a first outlet duct for the first fluid cavity and a second outlet duct for the second fluid cavity, wherein the first and second outlet ducts are staggered along the length of the dividing wall; a needle-impenetrable cap configured to receive the base, the cap including a first septum access aperture aligned with the first fluid cavity and a second septum access aperture aligned with the second fluid cavity; a single septum captured between the cap and the base and providing a fluid seal between the fluid cavities and the septum access apertures; an outlet stem connected at a proximal end thereof with the base and configured at a distal end thereof to receive the proximal end of the catheter, the stem enclosing a pair of channels of different lengths which extend in side-by-side relationship between respective ones of the first and second outlet ducts and a distal end of the stem; and means for locking the proximal end of the catheter to the outlet stem.
Claim 21
Dependent Claim
326 words
An implantable access port capable of being implanted beneath the skin of a patient, the access port enabling repeated, non-destructive fluid communication between the tip of a hypodermic needle piercing the skin of the patient and a proximal end of a selected one of the lumens of a dual lumen catheter implanted in the body of the patient coupled to the access port, thereby to selectively inject a fluid from the needle into the body of the patient by producing a flow of the fluid from the tip of the needle, through the access port, and along the selected one of the lumens to the distal end of the catheter, or to selectively withdraw fluid from the patient through the needle, said access port comprising: a needle-impenetrable base having a flat interior floor and walls normal to and upstanding therefrom, the walls defining a first fluid cavity and a second fluid cavity separated by a dividing wall configured to provide a first outlet duct for the first fluid cavity and a second outlet duct for the second fluid cavity, wherein the first and second outlet ducts are staggered along the length of the dividing wall; a needle-impenetrable cap configured to receive the base, the cap including a first septum access aperture aligned with the first fluid cavity and a second septum access aperture aligned with the second fluid cavity; a single septum captured between the cap and the base and providing a fluid seal between the fluid cavities and the septum access apertures; an outlet stem connected at a proximal end thereof with the base and configured at a distal end thereof to receive the proximal end of the catheter, the stem enclosing a pair of channels of different lengths which extend in side-by-side relationship between respective ones of the first and second outlet ducts and a distal end of the stem; and means for locking the proximal end of the catheter to the outlet stem.
Claim 22
Dependent Claim
13 words
The access port of claim 18, wherein the base includes silicone-filled suture holes.
Claim 23
Dependent Claim
77 words
The access port of claim 18, wherein the locking means includes a rigid catheter lock slidable over the proximal end of the catheter and the adjacent outlet stem for positioning adjacent to the base, and a resiliently flexible strain relief sleeve positionable over adjoining portions of the catheter lock and the catheter, wherein the catheter lock includes a distal tube section having a securement ridge which is fitted within an internal groove of the strain relief sleeve.
Claim 24
Dependent Claim
30 words
The access port of claim 18, including at least one palpation ridge extending upwardly from the cap adjacent to at least one of the first or second septum access apertures.
References Cited (Backward Citations)
US3310051A
Cited
US3724882A
Cited
US3958557A
Cited
US4133312A
Cited
US4122858A
Cited
US4190040A
Cited
US4344435A
Cited
US4405305A
Cited
US4820288A
Cited
US4464178A
Cited
US4405320A
Cited
US4778447A
Cited
EP0134745A1
Cited
US4781693A
Cited
US4569675A
Cited
US4681560A
Cited
US4693707A
Cited
US4564222A
Cited
US4695276A
Cited
US4632435A
Cited
US4692146A
Cited
US4710174A
Cited
US4778452A
Cited
US4675006A
Cited
US4673394A
Cited
US4685905A
Cited
US4695273A
Cited
US4704103A
Cited
US4762517A
Cited
US4826477A
Cited
US4995863A
Cited
US4753640A
Cited
US4723948A
Cited
US4772270A
Cited
US4772276A
Cited
US4816020A
Cited
US4822341A
Cited
US4892518A
Cited
US4905682A
Cited
US4963133A
Cited
US4880414A
Cited
US5108377A
Cited
US4915690A
Cited
US4955861A
Cited
US5084015A
Cited
US4929236A
Cited
US4911696A
Cited
US4861341A
Cited
US5026344A
Cited
US5045060A
Cited
US5041098A
Cited
US5129891A
Cited
US5167638A
Cited
US5178612A
Cited
US5360407A
Cited
US5399168A
Cited
US5213574A
Cited
US5613945A
Cited
US5387192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |