Intravascular implantation device and method of using the same
First Claim
1. An intravascular device having a chamber for containing transplanted cells and having outwardly extending peripheral flange means designed and shaped for suturing in an opening made in the wall of a blood vessel with a porous chamber-forming wall thereof providing an interface between the cells in the chamber and the blood in the vessel, said porous chamber-forming wall having a pore size permitting continuous diffusion of hormonal components therethrough but blocking the diffusion of cells.
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Abstract
An intravascular device having a chamber for containing transplanted cells. The device is adapted to be implanted in a wall of a blood vessel with a porous chamber-forming wall of the chamber providing an interface between the cells in the chamber and the blood in the vessel. The chamber-forming wall has a pore size permitting continuous diffusion of hormonal components therethrough but blocking the diffusion of cells. The device may also be implanted between an artery and a vein in a wall of each so as to act as a sieve between the artery and vein subject to the differential pressure therebetween. A method is also disclosed for employing the device to introduce hormonal components into the blood stream.
234 Citations
15 Claims
- 1. An intravascular device having a chamber for containing transplanted cells and having outwardly extending peripheral flange means designed and shaped for suturing in an opening made in the wall of a blood vessel with a porous chamber-forming wall thereof providing an interface between the cells in the chamber and the blood in the vessel, said porous chamber-forming wall having a pore size permitting continuous diffusion of hormonal components therethrough but blocking the diffusion of cells.
- 2. An intravascular device having a chamber for containing transplanted cells and adapted to be implanted between an artery and a vein and having outwardly extending peripheral flange means designed and shaped for suturing in an opening made in a wall of each with a porous chamber-forming wall of said device providing an interface between the cells in said chamber and the blood in the artery and another porous chamber-forming wall of said device providing an interface between the cells in said chamber and the blood in the vein, said porous chamber-forming walls each having a pore size permitting continous diffusion of hormonal components therethrough but blocking the diffusion of cells so that said device acts as a sieve between said artery and vein subject to the differential pressure therebetween.
- 10. A method for introducing hormonal components into the blood stream comprising implanting in a wall of a blood vessel a device having a chamber containing transplanted cells with a porous chamber-forming wall thereof providing an interface between the cells in the chamber and the blood in the vessel, said porous chamber-forming wall having a pore size permitting continuous diffusion of hormonal components therethrough but blocking the diffusion of cells.
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11. A method for introducing hormonal components into the blood stream comprising implanting between an artery and a vein in a wall of each a device having a chamber containing transplanted cells with a porous chamber-forming wall of said device providing an interface between the cells in said chamber and the blood in the artery and another porous chamber-forming wall of said device providing an interface between the cells in said chamber and the blood in the vein, said porous chamber-forming walls each having a pore size permitting continuous diffusion of hormonal components therethrough but blocking the diffusion of cells so that said device acts as a sieve between said artery and vein subject to the differential pressure therebetween.
Specification