US5503630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inplantable access devices
Assignee: Michigan TransTech Corp
•
Filing: 1995-06-06
•
Granted: 1996-04-02
•
Expires: 2015-06-06
Abstract
Abstract An access port for implantation within the body of a patient for providing repeated access to a specific site within the patient and communicating with the site by an implanted internal catheter. The access ports in accordance with this invention includes a dual housing having two inlet orifices each leading to a reduced diameter guide passageway. An external filament such as a needle, guide wire, optical fiber, or external catheter can be introduced into either of the inlet orifices and fed through the housing. This system allows for the introduction of therapeutic agents, the removal of fluids, or the introduction of sensing or articulating devices to multiple sites within the patient.
Inventors
- 👤 William D. Ensminger
- 👤 Robert F. Gavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:58
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M39/0208; A61M5/00; A61M1/00; A61M1/36; A61M1/3621; A61M1/3653; A61M2039/0211; A61M2039/0214; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0653; A61M2039/0666; A61M2039/0673; A61M2039/0686; A61M5/178; A61M5/31; A61M5/32; A61M5/3286; A61M5/329; A61M5/3291
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
110 words
An implantable access port for permitting the introduction of an external filament such as an external catheter, needle, guide wire or optical fiber within a patient comprising: a housing defining first and second generally funnel shaped entrance orifices, mounting means for supporting said housing subcutaneously, first and second housing passageways extending respectively from said first and second entrance orifices and respectively defining first and second exit orifices,and first and second articulating valve means respectively disposed in said first and second passageways, each of said first and second valve means for permitting said external filament to pass through said valve means while restricting the flow of fluids across said valve means.
Claim 2
Dependent Claim
110 words
An implantable access port for permitting the introduction of an external filament such as an external catheter, needle, guide wire or optical fiber within a patient comprising: a housing defining first and second generally funnel shaped entrance orifices, mounting means for supporting said housing subcutaneously, first and second housing passageways extending respectively from said first and second entrance orifices and respectively defining first and second exit orifices,and first and second articulating valve means respectively disposed in said first and second passageways, each of said first and second valve means for permitting said external filament to pass through said valve means while restricting the flow of fluids across said valve means.
Claim 3
Dependent Claim
19 words
An implantable access port according to claim 1 further comprising a catheter connected to each of said exit orifices.
Claim 4
Dependent Claim
23 words
An implantable access port according to claim 2 wherein said catheter communicates each of said exit orifices to distinct sites within said patient.
Claim 5
Dependent Claim
37 words
An implantable access port according to claim 2 wherein said catheter comprises a dual lumen catheter and wherein each of said lumens has a flow port and each of said flow ports are displaced along said catheter.
Claim 6
Dependent Claim
43 words
An implantable access port according to claim 2 wherein said port housing includes at least one physical feature which can be palpated after implantation which serves to differentiate the intended functions of said external filament introduced through said first and second valve means.
Claim 7
Dependent Claim
31 words
An implantable access port according to claim 5 wherein said features designate said first entrance orifice for infusion of a fluid and said second entrance orifice for withdrawal of a fluid.
Claim 8
Dependent Claim
167 words
An implantable access port for permitting the introduction of an external filament such as an external catheter, needle, guide wire or optical fiber within a patient comprising: a first housing defining a first generally funnel shaped entrance orifice; a first housing passageway extending from said first entrance orifice and defining a first exit orifice; a first articulating valve means disposed in said first passageway, said first valve means for permitting an external filament to pass through said first valve means while restricting the flow of fluid across said first valve means; a second housing defining a second generally funnel shaped entrance orifice, a second housing passageway extending from said second entrance orifice and defining a second exit orifice; a second articulating valve means disposed in said second passageway, said second valve means for permitting an external filament to pass through said second valve means while restricting the flow of fluid across said second valve means; and mounting means for supporting both said first and second housings subcutaneously.
Claim 9
Dependent Claim
167 words
An implantable access port for permitting the introduction of an external filament such as an external catheter, needle, guide wire or optical fiber within a patient comprising: a first housing defining a first generally funnel shaped entrance orifice; a first housing passageway extending from said first entrance orifice and defining a first exit orifice; a first articulating valve means disposed in said first passageway, said first valve means for permitting an external filament to pass through said first valve means while restricting the flow of fluid across said first valve means; a second housing defining a second generally funnel shaped entrance orifice, a second housing passageway extending from said second entrance orifice and defining a second exit orifice; a second articulating valve means disposed in said second passageway, said second valve means for permitting an external filament to pass through said second valve means while restricting the flow of fluid across said second valve means; and mounting means for supporting both said first and second housings subcutaneously.
Claim 10
Dependent Claim
23 words
An implantable access port according to claim 7 further comprising first and second catheters respectively connected to said first and second exit orifices.
Claim 11
Dependent Claim
27 words
An implantable access port according to claim 8 wherein said catheters are adapted to communicate said first and second exit orifices with distinct sites within said patient.
Claim 12
Dependent Claim
20 words
An implantable access port according to claim 8 wherein said first and second catheters comprise a single, dual lumen catheter.
Claim 13
Dependent Claim
32 words
An implantable access port according to claim 10 wherein each of said lumens has a flow port and each of said flow ports is displaced relative to the other along said catheter.
Claim 14
Dependent Claim
58 words
An implantable access port according to claim 7 wherein said first and second housings includes at least one physical feature adapted to be externally palpated after implantation of said port, said physical features providing indicia to differentiate intended functions of said first and second housings and of an external filament introduced through said first and second valve means.
Claim 15
Dependent Claim
32 words
An implantable access port according to claim 12 wherein said physical features designate said first entrance orifice for infusion of a fluid and said second entrance orifice for withdrawal of a fluid.
Claim 16
Dependent Claim
19 words
An implantable access port according to claim 7 wherein said first and second housings are integral with one another.
Claim 17
Dependent Claim
20 words
An implantable access port according to claim 7 wherein said first and second housings are unitarily formed with one another.
References Cited (Backward Citations)
FR1296652A
Cited
US3288137A
Cited
US3402710A
Cited
US3565078A
Cited
US3699956A
Cited
US4181132A
Cited
US4387879A
Cited
US4190040A
Cited
US4230109A
Cited
US4256102A
Cited
US4314568A
Cited
US4810241A
Cited
US4439188A
Cited
US4578061A
Cited
US4430081A
Cited
US4534759A
Cited
WO1983000367A1
Cited
DE3242870A1
Cited
US4464178A
Cited
US4425119A
Cited
US4405320A
Cited
US4447237A
Cited
US4491126A
Cited
US4490137A
Cited
EP0119596A1
Cited
EP0132940A1
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
US4929235A
Cited
DE3528878A1
Cited
US4692146A
Cited
US4710174A
Cited
US4673394A
Cited
US4790826A
Cited
US4695273A
Cited
US4712583A
Cited
US4832054A
Cited
GB2192338A
Cited
US4781695A
Cited
US4704103A
Cited
US4781680A
Cited
US4886501A
Cited
US5092849A
Cited
US4842591A
Cited
US4915690A
Cited
US4857062A
Cited
US4955861A
Cited
US4978338A
Cited
US4857053A
Cited
US5026344A
Cited
US5045060A
Cited
US5041098A
Cited
US5171228A
Cited
US5171216A
Cited
US5167638A
Cited
US5226879A
Cited
US5053013A
Cited
US5180365A
Cited
US5057084A
Cited
US5263930A
Cited
US5281199A
Cited
US5350360A
Cited
US5352204A
Cited
US5356381A
Cited
US5417656A
Cited
US5395324A
Cited
US5318545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-02 | 1999-10-02 | 2000-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-02 | 2003-10-02 | 2004-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-02 | 2007-10-02 | 2008-04-02 | $7700.00 | Window Closed / Lapsed |