# US 5,263,930 A · Implantable access devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,263,930 A - Document ID: US5263930A - Status: Granted - Kind: A - Application number: 07/940,626 - Filed: 1992-09-04 - Granted: 1993-11-23 - Earliest claimed: 1990-03-01 - Assignees: William D. Ensminger - Inventors: William D. Ensminger - Web page: https://patentgrep.com/patent/US5263930A ## CPC - A61M 39/0606: {without means for adjusting the seal opening or pressure (A61M39/0693 takes precedence)} - A61M 39/0208: {Subcutaneous access sites (implantable infusion devices A61M5/14276; transcutaneous access sites A61M39/0247)} - A61M 2039/0211: {with multiple chambers in a single site} - A61M 2039/0223: {having means for anchoring the subcutaneous access site} - A61M 2039/0235: {having an additional inlet, e.g. for a guidewire or a catheter tube} - A61M 2039/0241: {having means for filtering} - A61M 2039/062: {used with a catheter} - A61M 2039/0633: {the seal being a passive seal made of a resilient material with or without an opening} - A61M 2039/064: {Slit-valve} - A61M 2039/0686: {comprising more than one seal} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## 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. ## Claims ### Claim 1 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 (depends on 1) 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 3 (depends on 2) 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 4 (depends on 3) 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 5 (depends on 3) 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 6 (depends on 1) 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 7 (depends on 6) 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 8 (depends on 1) 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 9 (depends on 1) 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 10 (depends on 9) 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 11 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 12 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 13 (depends on 12) 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.