US5053013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable infusion device
Assignee: MICHIGAN A CONSTITUTIONAL CORP OF MI, University of, Regents of
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Filing: 1990-06-18
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Granted: 1991-10-01
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Expires: 2010-06-18
Abstract
Abstract In infusion port for implantation within a patient for providing repeated access to specific tissue within a patient and communicating with the tissue by an internal implanted catheter. The infusion port in accordance with this invention includes a housing having a funnel shaped inlet orifice which terminates in a reduced diameter guide passageway. Installed within the housing is an articulating catheter valve such as a leaflet valve assembly. The housing communicates with an exit passageway which is attached to an internal outflow catheter coupling the infusion port to a specific tissue within the patient. In use, a needle is used to penetrate the patient's skin and contacts the entrance orifice of the infusion port. The entrance orifice guides the needle point into alignment with and into the guide passageway. The guide passageway targets a small portion of the articulating catheter valve which can be in the form of a leaflet valve assembly. Once through the catheter valve, fluids may be infused into the patient through the needle or withdrawn from the patient. Alternatively, an external catheter or other filament can be placed in communication with the outflow catheter by feeding it in into the infusion port and into the implanted catheter after being introduced over a needle which is restricted from entering the implanted catheter.
Inventors
- 👤 William D. Ensminger
- 👤 James A. Knol
- 👤 James C. Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:42
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M39/0208; A61M2039/0211; A61M2039/0223; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0653; A61M2039/0686
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
155 words
An implantable patient access device for permitting access to an implanted internal catheter using a needle and enabling the introduciton of a flexible filament such as an external catheter, wire or optical fiber, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area and having a surface formed of a hard material for guiding said needle upon contacting said entrance orifice into a guide passageway within said housing means, said housing means further defining an exit orifice for attachment of said internal catheter, an articulating catheter valve within said housing means which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passageway guides and orients said needle to strike said catheter valve at a predetermined area, and mounting means formed by said housing means for affixing said housing means subcutaneously.
Claim 2
Dependent Claim
155 words
An implantable patient access device for permitting access to an implanted internal catheter using a needle and enabling the introduciton of a flexible filament such as an external catheter, wire or optical fiber, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area and having a surface formed of a hard material for guiding said needle upon contacting said entrance orifice into a guide passageway within said housing means, said housing means further defining an exit orifice for attachment of said internal catheter, an articulating catheter valve within said housing means which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passageway guides and orients said needle to strike said catheter valve at a predetermined area, and mounting means formed by said housing means for affixing said housing means subcutaneously.
Claim 3
Dependent Claim
26 words
An implantable patient access device according to claim 1 wherein said catheter valve comprises a leaflet valve having at least two elastic disc elements stacked together.
Claim 4
Dependent Claim
46 words
An implantable patient access device according to claim 2 wherein said disc elements having slits therethrough and each defining three or more deflectable valve leaves and wherein said guide passageway causes said needle to strike said disc elements at near the geometric center of said cuts.
Claim 5
Dependent Claim
40 words
An implantable patient access device according to claim 3 wherein said disc elements are stacked together such that said slits of a first of said disc element are not aligned with said slits of a second of said disc elements.
Claim 6
Dependent Claim
32 words
An implantable patient access device according to claim 3 wherein said guide passageway has a diameter not greater than one-half of the diameter of said elastic disc element portions defining said leaves.
Claim 7
Dependent Claim
25 words
An implantable patient access device according to claim 2 wherein said housing means further defines an internal cavity within which said leaflet valve is disposed.
Claim 8
Dependent Claim
25 words
An implantable patient access device according to claim 6 wherein said internal cavity provides clearance for said valve leaves to deflect toward said exit orifice.
Claim 9
Dependent Claim
25 words
An implantable patient access device according to claim 6 wherein said internal cavity provides clearance for said valve leaves to deflect toward said entrance orifice.
Claim 10
Dependent Claim
53 words
An implantable patient access device according to claim 6 wherein said housing means is defined by a main housing defining said entrance orifice and said guide passageway and an outlet plug connected with said main housing defining said exit orifice, said main housing and said outlet plug cooperating to define said internal cavity.
Claim 11
Dependent Claim
42 words
An implantable patient access device according to claim 1 wherein said housing means defines means to limit the amount of penetration of said needle in said housing means while allowing more flexible introduced filaments to be threaded entirely through said access device.
Claim 12
Dependent Claim
29 words
An implantable patient access device according to claim 10 wherein said means to limit the amount of penetration comprises a curved passageway which defines the limit of said penetration.
Claim 13
Dependent Claim
26 words
An implantable patient access device according to claim 2 wherein said leaflet valve further comprises a disc element having a hole for sealing against said filament.
Claim 14
Dependent Claim
38 words
An implantable patient access device according to claim 12 wherein said disc element having a hole is placed such that said needle passes through said element with a hole before passing through said leaflet valve elastic disc elements.
Claim 15
Dependent Claim
59 words
An implantable patient access device according to claim 1 further comprising an external catheter having said needle inserted into its hollow core and said access device allowing the combination of said needle and said external catheter to be inserted into said access device and thereafter allowing said needle to be removed leaving said external catheter inside said access device.
Claim 16
Dependent Claim
170 words
An implantable patient access device for communicating to a desired tissue site within the patient through an implanted internal catheter and accessible using a needle for enabling the introduction of a flexible filament such as an external catheter, wire or optical fiber, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area and having a surface formed of a hard material for guiding said needle upon contacting said entrance orifice into a straight guide passageway within said housing, and defining an internal cavity communicating with said guide passageway and an exit orifice, a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements having slits formed therethrough and defining a plurality of deflectable valve leaves, said disc elements stacked together such that said slits in each of said disc elements are not aligned with said slits of the adjacent of said disc elements, and mounting means formed by said housing for affixing said housing subcutaneously.
Claim 17
Dependent Claim
170 words
An implantable patient access device for communicating to a desired tissue site within the patient through an implanted internal catheter and accessible using a needle for enabling the introduction of a flexible filament such as an external catheter, wire or optical fiber, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area and having a surface formed of a hard material for guiding said needle upon contacting said entrance orifice into a straight guide passageway within said housing, and defining an internal cavity communicating with said guide passageway and an exit orifice, a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements having slits formed therethrough and defining a plurality of deflectable valve leaves, said disc elements stacked together such that said slits in each of said disc elements are not aligned with said slits of the adjacent of said disc elements, and mounting means formed by said housing for affixing said housing subcutaneously.
Claim 18
Dependent Claim
19 words
An implantable patient access device according to claim 15 wherein said disc elements define three or more valve leaves.
Claim 19
Dependent Claim
32 words
An implantable patient access device according to claim 15 wherein said guide passageway has a diameter not greater than one-half of the diameter of said elastic disc element portions defining said leaves.
Claim 20
Dependent Claim
26 words
An implantable patient access device according to claim 15 wherein said housing internal cavity provides clearance for said valve leaves to deflect toward said exit orifice.
Claim 21
Dependent Claim
26 words
An implantable patient access device according to claim 15 wherein said housing internal cavity provides clearance for said valve leaves to deflect toward said entrance orifice.
Claim 22
Dependent Claim
50 words
An implantable patient access device according to claim 15 wherein said housing includes a main housing defining said entrance orifice and said guide passageway and an outlet plug connected with said main housing defining said exit orifice, said main housing and said outlet plug cooperating to define said internal cavity.
Claim 23
Dependent Claim
27 words
An implantable patient access device according to claim 15 wherein said leaflet valve further comprises a disc element having a hole for sealing against an introduced filament.
Claim 24
Dependent Claim
38 words
An implantable patient access device according to claim 21 wherein said disc element having a hole is placed such that said needle passes through said element with a hole before passing through said leaflet valve elastic disc elements.
Claim 25
Dependent Claim
40 words
An implantable patient access device according to claim 15 wherein said housing defines means to limit the amount of penetration of said needle in said housing while allowing said flexible introduced filaments to be threaded entirely through said access device.
Claim 26
Dependent Claim
28 words
An implantable patient access device according to claim 23 wherein said means to limit the amount of penetration comprises a curved passageway which defines said limit of penetration.
Claim 27
Dependent Claim
29 words
An implantable patient access device according to claim 24 wherein said curved passageway allows said filament to be pushed through said curved passageway and into said implanted internal catheter.
Claim 28
Dependent Claim
47 words
An implantable patient access device according to claim 15 wherein said needle is placed through the hollow core of an external catheter and placed into said access device as a combination and wherein said needle may be withdrawn leaving said external catheter inside of said access device.
Claim 29
Dependent Claim
32 words
An implantable patient access device according to claim 15 wherein said needle allowing said filament to be fed into said access device after being introduced into said access device by said needle.
Claim 30
Dependent Claim
155 words
An implantable patient access device for infusion or withdrawal of a fluid through an implanted internal catheter communicating said device with a preselected site within the patient and accessible using a needle, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a guide passageway within said housing means, said housing means further defining an exit orifice for attachment of said internal catheter and an internal cavity, and a leaflet valve having at least two elastic disc elements stacked together within said housing internal cavity which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passageway guides and orients said needle to strike said leaflet valve at a predetermined area, said internal cavity providing clearance for said valve leaves to deflect toward said exit orifice.
Claim 31
Dependent Claim
155 words
An implantable patient access device for infusion or withdrawal of a fluid through an implanted internal catheter communicating said device with a preselected site within the patient and accessible using a needle, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a guide passageway within said housing means, said housing means further defining an exit orifice for attachment of said internal catheter and an internal cavity, and a leaflet valve having at least two elastic disc elements stacked together within said housing internal cavity which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passageway guides and orients said needle to strike said leaflet valve at a predetermined area, said internal cavity providing clearance for said valve leaves to deflect toward said exit orifice.
Claim 32
Dependent Claim
157 words
An implantable patient access device for infusion or withdrawal of a fluid through an implanted internal catheter communicating said device with a preselected site within the patient and accessible using a needle, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a guide passageway within said housing means, said housing means further defining an exit orifice for attachment of said internal catheter and an internal cavity, and a leaflet valve having at least two elastic disc elements stacked together within said housing internal cavity which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passgeway guides and orients said needle to strike said leaflet valve at a predetermined area and wherein said internal cavity providing clearance for said valve leaves to deflect toward said entrance orifice.
Claim 33
Dependent Claim
157 words
An implantable patient access device for infusion or withdrawal of a fluid through an implanted internal catheter communicating said device with a preselected site within the patient and accessible using a needle, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a guide passageway within said housing means, said housing means further defining an exit orifice for attachment of said internal catheter and an internal cavity, and a leaflet valve having at least two elastic disc elements stacked together within said housing internal cavity which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passgeway guides and orients said needle to strike said leaflet valve at a predetermined area and wherein said internal cavity providing clearance for said valve leaves to deflect toward said entrance orifice.
Claim 34
Dependent Claim
157 words
An implantable patient access device for infusion for withdrawal of a fluid through an implanted internal catheter communicating said device with a preselected site within the patient and accessible using a needle, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a guide passageway within said housing, said housing means further defining an exit orifice for attachment of said internal catheter, said housing defining means to limit the amount of penetration of said needle in said housing while allowing more flexible filaments or catheters to be threaded entirely through said infusion device, and an articulating catheter valve within said housing means which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passageway guides and orients said needle to strike said catheter valve at a predetermined area.
Claim 35
Dependent Claim
157 words
An implantable patient access device for infusion for withdrawal of a fluid through an implanted internal catheter communicating said device with a preselected site within the patient and accessible using a needle, comprising: housing means defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a guide passageway within said housing, said housing means further defining an exit orifice for attachment of said internal catheter, said housing defining means to limit the amount of penetration of said needle in said housing while allowing more flexible filaments or catheters to be threaded entirely through said infusion device, and an articulating catheter valve within said housing means which normally remains closed to provide resistance to flow of fluids through said valve, yet opens when penetrated by said needle enabling said needle to communicate with said internal catheter wherein said guide passageway guides and orients said needle to strike said catheter valve at a predetermined area.
Claim 36
Dependent Claim
28 words
An implantable patient access device according to claim 30 wherein said means to limit the amount of penetration comprises a curved passageway which defines said limit of penetration.
Claim 37
Dependent Claim
157 words
An implantable patient access device communicating to a desired tissue site within the patient by an implanted internal catheter and accessible using a needle for enabling the infusion or withdrawal of fluid through the needle or through an introduced external catheter, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a straight guide passageway within said housing, and defining an internal cavity communicating with said guide passageway and an exit orifice, and a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements having slits formed therethrough each defining a plurality of deflectable valve leaves, said disc elements stacked together such that said slits in each disc are not aligned with said slits of the adjacent of said discs and said housing internal cavity providing clearance for said valve leaves to deflect toward said exit orifice.
Claim 38
Dependent Claim
157 words
An implantable patient access device communicating to a desired tissue site within the patient by an implanted internal catheter and accessible using a needle for enabling the infusion or withdrawal of fluid through the needle or through an introduced external catheter, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a straight guide passageway within said housing, and defining an internal cavity communicating with said guide passageway and an exit orifice, and a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements having slits formed therethrough each defining a plurality of deflectable valve leaves, said disc elements stacked together such that said slits in each disc are not aligned with said slits of the adjacent of said discs and said housing internal cavity providing clearance for said valve leaves to deflect toward said exit orifice.
Claim 39
Dependent Claim
157 words
An implantable patient access device communicating to a desired tissue site within the patient by an implanted internal catheter and accessibly using a needle for enabling the infusion or withdrawal of fluid through the needle or through an introduced external catheter, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a straight guide passageway within said housing, sand defining an internal cavity communicating with said guide passageway and an exit orifice, and a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements having slits formed therethrough each defining a plurality of deflectable valve leaves, said disc elements stacked together such that said slits in each disc are not aligned with said slits of the adjacent of said discs, said housing assembly internal cavity providing clearance for said valve leaves to deflect toward said entrance orifice.
Claim 40
Dependent Claim
157 words
An implantable patient access device communicating to a desired tissue site within the patient by an implanted internal catheter and accessibly using a needle for enabling the infusion or withdrawal of fluid through the needle or through an introduced external catheter, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a straight guide passageway within said housing, sand defining an internal cavity communicating with said guide passageway and an exit orifice, and a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements having slits formed therethrough each defining a plurality of deflectable valve leaves, said disc elements stacked together such that said slits in each disc are not aligned with said slits of the adjacent of said discs, said housing assembly internal cavity providing clearance for said valve leaves to deflect toward said entrance orifice.
Claim 41
Dependent Claim
156 words
An implantable patient access device communicating to a desired tissue site within the patient by an implanted internal catheter and accessible using a needle for enabling the infusion or withdrawal of fluid through the needle or through an introduced external catheter, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a straight guide passageway within said housing, and defining an internal cavity communicating with said guide passageway and an exit orifice, said housing defining means to limit the amount of penetration of said needle in said housing while allowing more flexible introduced filaments or catheters to be threaded entirely through said device, and a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements stacked together such that said slits in each disc are not aligned with said slits of the adjacent of said discs.
Claim 42
Dependent Claim
156 words
An implantable patient access device communicating to a desired tissue site within the patient by an implanted internal catheter and accessible using a needle for enabling the infusion or withdrawal of fluid through the needle or through an introduced external catheter, comprising: a housing defining a entrance orifice having a decreasing cross-sectional area for guiding said needle into a straight guide passageway within said housing, and defining an internal cavity communicating with said guide passageway and an exit orifice, said housing defining means to limit the amount of penetration of said needle in said housing while allowing more flexible introduced filaments or catheters to be threaded entirely through said device, and a leaflet valve assembly positioned within said internal cavity and including at least two elastic disc elements stacked together, each of said disc elements stacked together such that said slits in each disc are not aligned with said slits of the adjacent of said discs.
Claim 43
Dependent Claim
29 words
An implantable patient access device according to claim 34 wherein said means to limit the amount of penetration comprises a curved passageway which defines the said limit of penetration.
Claim 44
Dependent Claim
30 words
An implantable patient access device according to claim 35 wherein said curved passageway allows said external catheter to be pushed through said curved passageway and into said implanted internal catheter.
Claim 45
Dependent Claim
135 words
An implantable patient access device for permitting access to an implanted internal catheter using a needle and enabling the introduction of a flexible filament such as an external catheter, wire or optical fiber comprising: housing means defining a entrance orifice having a decreasing cross-sectional area and having a surface formed of a hard material for guiding said needle upon contacting said entrance orifice toward a guide passageway within said housing, said housing means further defining an exit orifice for connection to said internal catheter, an articulating catheter valve within said housing means which normally remains closed to provide resistance to flow of fluids through said valve, yet opens for engagement with said filament enabling said filament to communicate with said internal catheter, and mounting means formed by said housing means for affixing said housing subcutaneously.
Claim 46
Dependent Claim
135 words
An implantable patient access device for permitting access to an implanted internal catheter using a needle and enabling the introduction of a flexible filament such as an external catheter, wire or optical fiber comprising: housing means defining a entrance orifice having a decreasing cross-sectional area and having a surface formed of a hard material for guiding said needle upon contacting said entrance orifice toward a guide passageway within said housing, said housing means further defining an exit orifice for connection to said internal catheter, an articulating catheter valve within said housing means which normally remains closed to provide resistance to flow of fluids through said valve, yet opens for engagement with said filament enabling said filament to communicate with said internal catheter, and mounting means formed by said housing means for affixing said housing subcutaneously.
References Cited (Backward Citations)
US3288137A
Cited
US3402710A
Cited
US3565078A
Cited
US3699956A
Cited
US4181132A
Cited
US4387879A
Cited
US4190040A
Cited
US4230109A
Cited
US4256102A
Cited
US4810241A
Cited
US4439188A
Cited
US4578061A
Cited
US4430081A
Cited
US4464178A
Cited
US4447237A
Cited
US4491126A
Cited
US4490137A
Cited
EP0119596A1
Cited
US4581020A
Cited
EP0134745A1
Cited
US4781693A
Cited
US4569675A
Cited
US4543088A
Cited
US4623329A
Cited
US4547194A
Cited
US4634422A
Cited
US4682981A
Cited
US4578063A
Cited
US4650473A
Cited
US4710167A
Cited
US4645495A
Cited
DE3528878A1
Cited
US4692146A
Cited
US4710174A
Cited
US4673394A
Cited
US4695273A
Cited
US4712583A
Cited
US4781695A
Cited
US4704103A
Cited
US4886501A
Cited
US4842591A
Cited
US4857062A
Cited
US4857053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-30 | 1995-04-01 | 1995-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-30 | 1999-04-01 | 1999-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-30 | 2003-04-01 | 2003-10-01 | $7700.00 | Window Closed / Lapsed |