Implantable access devices
First Claim
1. An implantable access device for permitting access to a predetermined tissue within a patient by a filament, such as a needle, external catheter, steerable wire or optic fiber, percutaneously inserted into said device, said device comprising:
- a housing including a funnel shaped entrance orifice and a focus area, said entrance orifice having a shape of decreasing cross sectional area defining a target area for insertion of said filament into said device, said entrance orifice causing said filament introduced thereinto to be directed to said focus area;
a body defining a passageway extending from said entrance orifice and said focus area, said passageway terminating in an exit orifice at said predetermined tissue, said passageway receiving said filament from said entrance orifice when said filament is inserted into said device;
valve means positioned in said passageway and normally remaining closed for providing resistance to fluid flow through said passageway, said valve means also permitting passage of said filament therethrough for enabling said filament to communicate across said valve means with said predetermined tissue, said passageway branching into at least two subpassageways, one of said subpassageways having said valve means located therein; and
mounting means for subcutaneously mounting said access device.
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Accused Products
Abstract
An access port for implantation within the body of a patient. The device includes an implanted internal catheter for providing repeated access to at least one predetermined site within the patient. The access port according to this invention includes a housing having an inlet orifice leading to an exit orifice and an implanted catheter, which includes at least two subpassageways. A first valve mechanism is positioned in the device to normally prevent the flow of fluids through the implanted catheter. A second valve mechanism is positioned in at least one of the subpassageways of the internal catheter. An external filament such as a needle, guide wire, optical fiber, or external catheter can be introduced into the access device and fed therethrough. This system thus allows the introduction of therapeutic agents, the removal of fluids from the body, or the introduction of sensing or articulating devices to the specific sites within the patient.
210 Citations
18 Claims
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1. An implantable access device for permitting access to a predetermined tissue within a patient by a filament, such as a needle, external catheter, steerable wire or optic fiber, percutaneously inserted into said device, said device comprising:
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a housing including a funnel shaped entrance orifice and a focus area, said entrance orifice having a shape of decreasing cross sectional area defining a target area for insertion of said filament into said device, said entrance orifice causing said filament introduced thereinto to be directed to said focus area; a body defining a passageway extending from said entrance orifice and said focus area, said passageway terminating in an exit orifice at said predetermined tissue, said passageway receiving said filament from said entrance orifice when said filament is inserted into said device; valve means positioned in said passageway and normally remaining closed for providing resistance to fluid flow through said passageway, said valve means also permitting passage of said filament therethrough for enabling said filament to communicate across said valve means with said predetermined tissue, said passageway branching into at least two subpassageways, one of said subpassageways having said valve means located therein; and mounting means for subcutaneously mounting said access device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable access device for permitting access to at least one predetermined site within a patient by a filament, such as a needle, external catheter, steerable wire or optic fiber, percutaneously inserted into said access device, said access device comprising:
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a housing including an entrance orifice, a focus area, an exit orifice, and an internal passageway within said housing extending from said focus area to said exit orifice, said entrance orifice having a shape of decreasing cross sectional area defining a target area for insertion of said filament into said device, said entrance orifice causing said filament introduced thereinto to be directed to said focus area, said passageway receiving said filament from said focus area when said filament is inserted into said access device; an implanted catheter leading from said exit orifice to at least one predetermined site within the patient, said implanted catheter branching to include at least two subpassageways; first valve means positioned in said access device and normally remaining closed for providing resistance to fluid flow through said implanted catheter, said first valve means also permitting passage of said filament therethrough for enabling said filament to communicate across said valve means with the at least one predetermined site within the patient; second valve means positioned in one of said subpassageways and normally remaining closed for providing resistance to fluid flow therethrough, said second valve means opening to permit communication thereacross with the at least one predetermined site within the patient; and mounting means for subcutaneously mounting said access device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification