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US5281199A
Expired / Lapsed
US
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Implantable access devices
Assignee: Michigan TransTech Corp
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Filing: 1992-09-04
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Granted: 1994-01-25
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Expires: 2012-09-04
Abstract
Abstract An access port for implantation within the body of a patient for providing repeated access to specific tissue within the patient and communicating with the tissue by an implanted internal catheter. The access ports in accordance with this invention include a housing having funnel a shaped inlet orifice leading to a reduced diameter guide passageway. An articulating valve which may take various forms including leaflet type valves or self-collapsing tubular valves are placed in line with the access port housing. An external filament such as a needle, guide wire, optical fiber, or external catheter can be introduced into the access device and fed through the housing to penetrate the articulating valve. This system allows the introduction of therapeutic agents, the removal of fluids from the body, or the introduction of sensing or articulating devices to specific sites within the patient.
Inventors
- 👤 William D. Ensminger
- 👤 Robert F. Gavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:11
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M39/0208; A61M2039/0211; A61M2039/062
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
146 words
An implantable access port for permitting the introduction of an external filament such as a catheter, needle, guide wire or optical fiber within the body of a patient comprising: an access housing defining a generally funnel shaped entrance orifice communicating with a passageway terminating at an outlet, said entrance orifice guiding the external filament inserted percutaneously into said passageway, said housing having means for supporting said housing within the body of the patient, a valve assembly having an inlet connected with said access housing outlet and having an outlet for connection with a site within the body of the patient, said valve assembly normally resisting the passage of fluids across said valve assembly yet opens to permit passage of the external filament inserted through said access housing passageway and into said valve assembly, and conduit means for connecting said access housing outlet with said valve assembly.
Claim 2
Dependent Claim
146 words
An implantable access port for permitting the introduction of an external filament such as a catheter, needle, guide wire or optical fiber within the body of a patient comprising: an access housing defining a generally funnel shaped entrance orifice communicating with a passageway terminating at an outlet, said entrance orifice guiding the external filament inserted percutaneously into said passageway, said housing having means for supporting said housing within the body of the patient, a valve assembly having an inlet connected with said access housing outlet and having an outlet for connection with a site within the body of the patient, said valve assembly normally resisting the passage of fluids across said valve assembly yet opens to permit passage of the external filament inserted through said access housing passageway and into said valve assembly, and conduit means for connecting said access housing outlet with said valve assembly.
Claim 3
Dependent Claim
15 words
An access port according to claim 1 wherein said valve assembly comprises an articulating valve.
Claim 4
Dependent Claim
34 words
An access port according to claim 2 wherein said articulating valve comprises a leaflet valve having at least one generally flat disc of a resilient material with at least one cut through said disk.
Claim 5
Dependent Claim
48 words
An access port according to claim 3 wherein said leaflet valve includes at lest two of said discs which are stacked together and are oriented so that said cut of a first of said discs is not aligned with said cut of a second of said valve disks.
Claim 6
Dependent Claim
45 words
An access port according to claim 1 further comprising stop means within said access housing passageway for restricting the passage of a relatively rigid external filament while permitting a relatively more flexible introduced filament to pass through said access hosing and into said valve assembly.
Claim 7
Dependent Claim
18 words
An access port according to claim 5 wherein said stop means comprises a ben din said housing passageway.
Claim 8
Dependent Claim
13 words
An access port according to claim 1 wherein said conduit means is flexible.
Claim 9
Dependent Claim
21 words
An access port according to claim 1 further comprising an implanted catheter connected with said valve assembly outlet and said site.
Claim 10
Dependent Claim
162 words
An implantable access port to permit the introduction of an external filament such as a catheter, needle, guide wire or optical fiber within the body of a patient comprising: an access hosing defining a generally funnel shaped entrance orifice communicating with a passageway, said entrance orifice guiding said external filament inserted percutaneously into said passageway, said housing having means for supporting said housing within the body of the patient, and a valve connected to said access housing passageway, said valve in the form of a hollow tube having an interior cavity and formed of an elastomeric material which normally remains in a flattened condition causing said interior cavity to be occluded thus resisting the passage of fluids through said valve yet opens to permit passage of said external filament into said interior cavity when said external filament is inserted through said housing passageway and into said valve, said valve having an outlet communicating with a site within the body of the patient.
Claim 11
Dependent Claim
162 words
An implantable access port to permit the introduction of an external filament such as a catheter, needle, guide wire or optical fiber within the body of a patient comprising: an access hosing defining a generally funnel shaped entrance orifice communicating with a passageway, said entrance orifice guiding said external filament inserted percutaneously into said passageway, said housing having means for supporting said housing within the body of the patient, and a valve connected to said access housing passageway, said valve in the form of a hollow tube having an interior cavity and formed of an elastomeric material which normally remains in a flattened condition causing said interior cavity to be occluded thus resisting the passage of fluids through said valve yet opens to permit passage of said external filament into said interior cavity when said external filament is inserted through said housing passageway and into said valve, said valve having an outlet communicating with a site within the body of the patient.
Claim 12
Dependent Claim
26 words
An implantable access port according to claim 9 wherein said access housing passageway terminates in an outlet and said valve is attache to said housing outlet.
Claim 13
Dependent Claim
32 words
An implantable access port according to claim 10 wherein said valve terminates in an internal catheter segment having a round cross-section which communicates with said site within the body of the patient.
Claim 14
Dependent Claim
21 words
An implantable access port according to claim 9 wherein said valve opens through contact with said external filament during insertion thereof.
Claim 15
Dependent Claim
42 words
An access port according to claim 9 further comprising stop means within said access housing for restricting the passage of a relatively rigid filament while permitting a relatively more flexible introduced filament to pass through said access housing and into said valve.
Claim 16
Dependent Claim
18 words
An access port according to claim 13 wherein said stop means comprises a bend in said housing passageway.
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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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |