Tumor access device and method for delivering medication into a body cavity
First Claim
1. A surgically implantable device for accessing a body cavity through a relatively small cavity wall aperture, and delivering medication through the device into the body cavity, the device comprising:
- means for receiving a first fluid subcutaneously by injection into the device at a location remote from the body cavity;
a first conduit extending from the first fluid receiving means to the cavity wall aperture;
a flexible, fluid impermeable bag configured for insertion into the body cavity through the cavity wall aperture, the fluid impermeable bag having an exterior surface and a bag inlet connected to the first conduit opposite to the first fluid receiving means such that fluid injected into the first fluid receiving means flows into the fluid impermeable bag to inflate it within the body cavity, and such that fluid withdrawn from the first fluid receiving means collapses the fluid impermeable bag permitting it to be withdrawn from the body cavity;
means for receiving by injection, at a location remote from the fluid impermeable bag, medication into the device;
a second conduit connected to the medication receiving means and extending adjacent to the first conduit to the cavity wall aperture; and
means for delivering the medication from the medication receiving means into a space between walls defining the body cavity and the exterior surface of the fluid impermeable bag, wherein the medication delivering means includes at least one medication outlet which directs the medication injected into the medication receiving means into said space such that the medication substantially surrounds the fluid impermeable bag.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for delivering a medication into a body cavity includes the steps of inflating a flexible bag within the body cavity such that the flexible bag expands to fill most of the void of the body cavity, and injecting medication into the space between an exterior surface of the flexible bag and the cavity wall such that the medication substantially surrounds the flexible bag and fills the remaining void. The steps of inflating the flexible bag and injecting medication are accomplished through subcutaneous injection at a site remote from the body cavity. To accomplish this, a surgically implantable tumor access device includes co-located first and second injection ports, for respectively, receiving a sterile fluid and a fluid medication. A flexible fluid conduit, which includes two coaxial tubes, directs the injected fluids, in a manner providing separate fluid flow paths, to a point adjacent to an inlet for the flexible bag. An inner tube fluidly connects the flexible bag with the first injection port. An outer tube surrounding the inner tube directs medication from the second injection port to medication delivery tubes fixed to an exterior surface of the flexible bag.
236 Citations
33 Claims
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1. A surgically implantable device for accessing a body cavity through a relatively small cavity wall aperture, and delivering medication through the device into the body cavity, the device comprising:
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means for receiving a first fluid subcutaneously by injection into the device at a location remote from the body cavity; a first conduit extending from the first fluid receiving means to the cavity wall aperture; a flexible, fluid impermeable bag configured for insertion into the body cavity through the cavity wall aperture, the fluid impermeable bag having an exterior surface and a bag inlet connected to the first conduit opposite to the first fluid receiving means such that fluid injected into the first fluid receiving means flows into the fluid impermeable bag to inflate it within the body cavity, and such that fluid withdrawn from the first fluid receiving means collapses the fluid impermeable bag permitting it to be withdrawn from the body cavity; means for receiving by injection, at a location remote from the fluid impermeable bag, medication into the device; a second conduit connected to the medication receiving means and extending adjacent to the first conduit to the cavity wall aperture; and means for delivering the medication from the medication receiving means into a space between walls defining the body cavity and the exterior surface of the fluid impermeable bag, wherein the medication delivering means includes at least one medication outlet which directs the medication injected into the medication receiving means into said space such that the medication substantially surrounds the fluid impermeable bag. - View Dependent Claims (2, 3, 5)
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6. A surgically implantable device for accessing a body cavity through a relatively small cavity wall aperture, and delivering medication through the device into the body cavity, the device comprising:
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a flexible, fluid impermeable bag configured for insertion into the body cavity through the cavity wall aperture, the fluid impermeable bag having a bag inlet and an exterior surface; means for receiving by injection, at a location remote from the fluid impermeable bag, a fluid utilized for inflating the fluid impermeable bag; a fluid conduit connecting the fluid impermeable bag to the inflating fluid receiving means, such that fluid injected into the inflating fluid receiving means passes through the fluid conduit and the bag inlet to inflate the fluid impermeable bag; means for receiving by injection, at a location remote from the fluid impermeable bag, medication into the device; and means for delivering the medication from the medication receiving means into a space between the walls of the body cavity and the exterior surface of the fluid impermeable bag; wherein the inflating fluid receiving means includes a first injection port comprising the first base and a first self-sealing dome which define therebetween a fluid injection chamber, wherein a first open end of the fluid conduit is attached to the first injection port such that fluid injected into the fluid injection chamber freely passes through the first open end of the fluid conduit for delivery to the fluid impermeable bag. - View Dependent Claims (7, 8)
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9. A surgically implantable device for accessing a body cavity through a relatively small cavity wall aperture, and delivering medication through the device into the body cavity, the device comprising:
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a flexible, fluid impermeable bag configured for insertion into the body cavity through the cavity wall aperture, the fluid impermeable bag having a bag inlet and an exterior surface; means for receiving by injection, at a location remote from the fluid impermeable bag, a fluid utilized for inflating the fluid impermeable bag; a fluid conduit connecting the fluid impermeable bag to the inflating fluid receiving means, such that fluid injected into the inflating fluid receiving means passes through the fluid conduit and the bag inlet to inflate the fluid impermeable bag; means for receiving by injection, at a location remote from the fluid impermeable bag, medication into the device; and means for delivering the medication from the medication receiving means into a space between the walls of the body cavity and the exterior surface of the fluid impermeable bag; wherein the fluid conduit extends between and connects the medication receiving means and the medication delivering means, such that fluid injected into the medication receiving means passes through the fluid conduit into the medication delivering means for passage into the space between the walls of the body cavity and the exterior surface of the fluid impermeable bag, and wherein the fluid conduit includes a first section of tubing having a first end which receives fluid injected into the inflating fluid receiving means, and a second end which discharges fluid passing therethrough into the fluid impermeable bag through the bag inlet, the fluid conduit further including a second section of tubing which is coaxial with and surrounds the first section of tubing for at least a portion of the length of the fluid conduit, and which has a first end which receives fluid injected into the medication receiving means, and a second end which discharges fluid into the medication delivering means. - View Dependent Claims (4, 10, 11, 12, 13, 14, 15, 16)
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17. A method for delivering a medication into a body cavity, the steps comprising:
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inflating a flexible bag within the body cavity utilizing a sterile fluid, such that the flexible bag expands a fill most of the void of the body cavity; and injecting medication into the space between an exterior surface of the flexible bag and the cavity wall such that the medication substantially surrounds the flexible bag and fills the remaining void; wherein the steps of inflating the flexible bag and injecting medication are accomplished through subcutaneous injection at a site remote from the body cavity. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for accessing a body cavity through a relatively small cavity wall aperture, and for delivering medication into the body cavity, the steps comprising:
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inserting a flexible, fluid impermeable bag into the body cavity through the cavity wall aperture; implanting an injection site at a location remote from the body cavity, and a fluid conduit extending between the injection site and a bag inlet; injecting fluid into the injection site in a manner and in quantities sufficient to inflate the bag to substantially fill the body cavity; and injecting medication into the injection site such that the medication is directed into the body cavity between the flexible bag and the walls of the body cavity. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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Specification