Implantable systems and stents containing cells for therapeutic uses
First Claim
1. A medical device comprising:
- an elongated catheter comprising an intravascularly implantable tip end and a port end; and
a porous sac radially disposed about and enclosing said tip end thereby forming a containment envelope between said sac and said tip end;
said tip end having openings or side holes in communication with said containment envelope within said sac;
said sac capable of eluting one or more therapeutic agents that elute through said sac in response to a stimulus when biologically active cells for containing one or more therapeutic agents are optionally disposed in said containment envelope.
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Abstract
An implantable system includes cells that produce and release a therapeutic agent, or agents, to a host in need. The system can include cells capable of eluting therapeutic agents in response to changing physiological conditions within a host. The system may comprise naked cells, encapsulated cells, or a mixture of non-encapsulating and encapsulated cells. The system may also comprise cells, and/or cell groups, of different origins. The implantable device may be placed intra-vascular, within bone marrow, within soft tissue, in the peritoneal cavity, or intra-hepatic, etc. The system can be comprised of a stent, or like devices. Such stents and like devices may optionally include port(s), catheter(s), and containment envelope systems for holding the above cells.
33 Citations
15 Claims
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1. A medical device comprising:
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an elongated catheter comprising an intravascularly implantable tip end and a port end; and a porous sac radially disposed about and enclosing said tip end thereby forming a containment envelope between said sac and said tip end;
said tip end having openings or side holes in communication with said containment envelope within said sac;
said sac capable of eluting one or more therapeutic agents that elute through said sac in response to a stimulus when biologically active cells for containing one or more therapeutic agents are optionally disposed in said containment envelope. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A medical device comprising:
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an implantable portion comprising; an elongated catheter comprising an intravascular tip end and a port end; and a porous sac radially disposed and encompassing the intravascular tip end thereby forming a containment envelope between the sac and the tip end, the tip end having openings or side holes in communication with the containment envelope within the sac, the sac capable of eluting one or more therapeutic agents through the sac in response to a stimulus when biologically active cells for containing one or more therapeutic agents are optionally disposed in the containment envelope, and the sac allowing transfer of nutrients from medium surrounding the sac to the cells; and a port connecting to the port end of the elongated catheter.
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Specification