US5263930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable access devices
Assignee: ENSMINGER WILLIAM D MD PHD
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Filing: 1992-09-04
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Granted: 1993-11-23
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Expires: 2012-09-04
Abstract
Abstract One aspect of the present invention is an implantable patient access port which provides a percutaneous route for access using an external filament such as an external catheter, needle, wire or optical fiber. The access port incorporates an internal reservoir for the retention of an antibacterial fluid and further includes a means for refilling the fluid chamber. Refilling is accomplished through providing a separate fluid reservoir within the housing and further through the provision of a barrier which can be penetrated using a needle. Another aspect of the invention is the provision of a blood check device which prevents migration of red blood cells from a percutaneously placed accessed catheter outside of the patient. The device includes a filter media element and connector for permitting in-line placement of the blood check in the access catheter.
Inventors
- 👤 William D. Ensminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:10
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M39/0208; A61M2039/0211; A61M2039/0223; A61M2039/0235; A61M2039/0241; A61M2039/062; A61M2039/0633; A61M2039/064; A61M2039/0686
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
170 words
An access port implantable within the body of a patient to permit the percutaneous placement of an external filament such as an external catheter, needle, guidewire or optical fiber, and providing access to a site within the body of the patient through an implanted catheter, said access port comprising: a housing defining a generally funnel shaped entrance orifice communicating with a passageway which terminates at an outlet for connection with the implanted catheter, 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 patent, first and second valves in said housing passageway, each of said valves normally restricting the passage of fluids therethrough yet open to permit passage of said external filament, said valves being separated to define an antibacterial fluid chamber for the retention of an antibacterial fluid, and refilling means permitting said antibacterial fluid chamber to be refilled with said antibacterial fluid after said port is placed within the body of the patient.
Claim 2
Dependent Claim
170 words
An access port implantable within the body of a patient to permit the percutaneous placement of an external filament such as an external catheter, needle, guidewire or optical fiber, and providing access to a site within the body of the patient through an implanted catheter, said access port comprising: a housing defining a generally funnel shaped entrance orifice communicating with a passageway which terminates at an outlet for connection with the implanted catheter, 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 patent, first and second valves in said housing passageway, each of said valves normally restricting the passage of fluids therethrough yet open to permit passage of said external filament, said valves being separated to define an antibacterial fluid chamber for the retention of an antibacterial fluid, and refilling means permitting said antibacterial fluid chamber to be refilled with said antibacterial fluid after said port is placed within the body of the patient.
Claim 3
Dependent Claim
37 words
An access port according to claim 1 wherein said refilling means includes a reservoir chamber defined by said housing for retaining a volume of said antibacterial fluid and communicating with said antibacterial fluid chamber through a passage.
Claim 4
Dependent Claim
44 words
An access port according to claim 2 further comprising a barrier means and a refilling orifice separate from said entrance orifice and communicating with said reservoir chamber for enabling refilling of said reservoir chamber through a transcutaneous refilling instrument which penetrates said barrier means.
Claim 5
Dependent Claim
24 words
An access port according to claim 3 wherein said barrier means comprises an elastomeric septum and wherein said refilling instrument comprises a hypodermic needle.
Claim 6
Dependent Claim
26 words
An access port according to claim 3 wherein said passage is oriented such that said refilling instrument is prevented from passing into said antibacterial fluid chamber.
Claim 7
Dependent Claim
61 words
An access port according to claim 1 wherein said first valve is positioned adjacent said housing entrance orifice and said second valve is positioned adjacent said outlet and wherein said first valve imposes a lesser restriction to the flow of fluids across said first valve when the external filament is not placed into said port as compared with said second valve.
Claim 8
Dependent Claim
66 words
An access port according to claim 6 wherein said first valve comprises a leaflet valve in the form of a single flat disk of resilient material with at least one cut through said disk to define at least two valve leaves and said second valve comprises a plurality of said disks each having at least one cut therethrough and each defining at least two valve leaves.
Claim 9
Dependent Claim
34 words
An access port according to claim 1 wherein said fluid chamber communicates with tissue in the body of the patient surrounding said port through at least one infusion aperture separate from said entrance orifice.
Claim 10
Dependent Claim
48 words
An access port according to claim 1 wherein said refilling means comprises a barrier means and a refilling orifice separate from said entrance orifice communicating with said antibacterial fluid chamber for enabling refilling of said antibacterial chamber through a transcutaneous refilling instrument which passes through said barrier means.
Claim 11
Dependent Claim
24 words
An access port according to claim 9 wherein said barrier means comprises an elastomeric septum and wherein said refilling instrument comprises a hypodermic needle.
Claim 12
Dependent Claim
186 words
An access port implantable within the body of a patient to permit the percutaneous placement of an external filament such as an external catheter, needle, guidewire or optical fiber, and providing access to a site within the body of the patient through an implanted catheter comprising: a housing defining a generally funnel shaped entrance orifice communicating with a passageway which terminates at an outlet for connection with the implanted catheter, 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, first and second valves in said housing passageway, each of said valves normally restricting the passage of fluids therethrough yet open to permit passage of said external filament, said valves being separated to define an antibacterial fluid chamber for the retention of an antibacterial fluid, and a reservoir chamber separate from said antibacterial fluid chamber for retaining a volume of said antibacterial fluid and which communicates with said antibacterial fluid chamber through a passage enabling said antibacterial fluid to be transferred from said reservoir chamber to said antibacterial fluid chamber.
Claim 13
Dependent Claim
186 words
An access port implantable within the body of a patient to permit the percutaneous placement of an external filament such as an external catheter, needle, guidewire or optical fiber, and providing access to a site within the body of the patient through an implanted catheter comprising: a housing defining a generally funnel shaped entrance orifice communicating with a passageway which terminates at an outlet for connection with the implanted catheter, 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, first and second valves in said housing passageway, each of said valves normally restricting the passage of fluids therethrough yet open to permit passage of said external filament, said valves being separated to define an antibacterial fluid chamber for the retention of an antibacterial fluid, and a reservoir chamber separate from said antibacterial fluid chamber for retaining a volume of said antibacterial fluid and which communicates with said antibacterial fluid chamber through a passage enabling said antibacterial fluid to be transferred from said reservoir chamber to said antibacterial fluid chamber.
Claim 14
Dependent Claim
167 words
An access port implantable within the body of a patient to permit the percutaneous placement of an external filament such as an external catheter, needle, guidewire or optical fiber, and providing access to a site within the body of the patient through an implanted catheter, said access port comprising: a housing defining a generally funnel shaped entrance orifice communicating with a passageway which terminates at an outlet for connection with the implanted catheter, 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, first and second valves in said housing passageway, each of said valves normally restricting the passage of fluids therethrough yet open to permit passage of said external filament, said valves being separated to define an antibacterial fluid chamber for the retention of an antibacterial fluid, and a refilling orifice separate from said entrance orifice enclosed by a barrier for enabling refilling of said chamber with said antibacterial fluid.
Claim 15
Dependent Claim
167 words
An access port implantable within the body of a patient to permit the percutaneous placement of an external filament such as an external catheter, needle, guidewire or optical fiber, and providing access to a site within the body of the patient through an implanted catheter, said access port comprising: a housing defining a generally funnel shaped entrance orifice communicating with a passageway which terminates at an outlet for connection with the implanted catheter, 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, first and second valves in said housing passageway, each of said valves normally restricting the passage of fluids therethrough yet open to permit passage of said external filament, said valves being separated to define an antibacterial fluid chamber for the retention of an antibacterial fluid, and a refilling orifice separate from said entrance orifice enclosed by a barrier for enabling refilling of said chamber with said antibacterial fluid.
Claim 16
Dependent Claim
25 words
An implantable access port according to claim 12 wherein said barrier means comprises an elastomeric septum and wherein said refilling instrument comprises a hypodermic needle.
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
US4425119A
Cited
US4405320A
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
US4929235A
Cited
DE3528878A1
Cited
US4692146A
Cited
US4710174A
Cited
US4673394A
Cited
US4790826A
Cited
US4695273A
Cited
US4712583A
Cited
US4832054A
Cited
US4781695A
Cited
US4704103A
Cited
US4781680A
Cited
US4886501A
Cited
US4842591A
Cited
US4857062A
Cited
US4978338A
Cited
US4857053A
Cited
US5041098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |