Implantable infusion apparatus
DCFirst Claim
1. Implantable infusion apparatus comprisinga hermetically sealed housing, said housing including a pronounced outwardly projecting promontory positioned at or near the center of the housing away from the periphery thereof;
- a passage into said housing at said promontory;
needle stop means at the end of said passage inside said housing;
a first needle-penetrable, self-sealing septum mounted in said passage at a selected spacing from said needle stop means, said first septum being located at the outer surface of said housing at the top of said promontory;
a second septum mounted in said passage at a selected spacing from said first septum thereby to divide said passage into a first segment extending between said needle stop means and said first septum and a second aligned segment extending between said first septum and said second septum;
first and second fluid outlets from said first and second passage segments;
a pumpable infusate reservoir inside said housing in fluid communication with one of said fluid outlets, the other of said fluid outlets being in fluid communication with fluid flow means extending within said housing;
a catheter extending from the housing for conducting fluid from said apparatus to an infusion site; and
a conduit in said housing for conducting fluid from said reservoir to said catheter.
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Accused Products
Abstract
Implantable infusion apparatus includes a housing with an inlet passage extending into the housing at a pronounced promontory on the housing wall. The passage has an outer end at the top of the promontory and an inner end defined by a needle stop positioned inside the housing. Self-sealing septa mounted in the passage at selected spacings from the needle stop divide the passage into a plurality of aligned inlet ports each of which has its own fluid outlet. One of the outlets leads to a pumpable infusate reservoir having an outlet conduit connected to a catheter that extends outside the housing; another leads directly to the outlet conduit so that while a first fluid is being pumped from the reservoir to the catheter, a second fluid can be introduced into the other inlet port for mixing with the first fluid flowing to the catheter. Several different infusate flow configurations are also disclosed.
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Citations
45 Claims
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1. Implantable infusion apparatus comprising
a hermetically sealed housing, said housing including a pronounced outwardly projecting promontory positioned at or near the center of the housing away from the periphery thereof; -
a passage into said housing at said promontory; needle stop means at the end of said passage inside said housing; a first needle-penetrable, self-sealing septum mounted in said passage at a selected spacing from said needle stop means, said first septum being located at the outer surface of said housing at the top of said promontory; a second septum mounted in said passage at a selected spacing from said first septum thereby to divide said passage into a first segment extending between said needle stop means and said first septum and a second aligned segment extending between said first septum and said second septum; first and second fluid outlets from said first and second passage segments; a pumpable infusate reservoir inside said housing in fluid communication with one of said fluid outlets, the other of said fluid outlets being in fluid communication with fluid flow means extending within said housing; a catheter extending from the housing for conducting fluid from said apparatus to an infusion site; and a conduit in said housing for conducting fluid from said reservoir to said catheter. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 16)
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7. The apparatus defined in claim 7 wherein said pumpable infusate reservoir includes
A. a collapsible infusate chamber; - and
B. means for collapsing the chamber to force infusate from the chamber through said conduit to said catheter. - View Dependent Claims (8)
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14. Implantable infusion apparatus comprising:
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a hermetically sealed housing; a passage into said housing; needle stop means at the end of said passage inside said housing; a first needle-penetrable, self-sealing septum mounted in said passage at a selected spacing from said needle stop means; a second septum mounted in said passage at a selected spacing from said first septum thereby to divide said passage into a first segment extending between said needle stop means and said first septum and a second aligned segment extending between said first septum and said second septum; first and second fluid outlets from said first and second passage segments; a pumpable infusate reservoir inside said housing in fluid communication with one of said fluid outlets, said reservoir including rigid manifold means inside the housing, means defining a circular groove with an open edge in said manifold means, a collapsible metal bellows capsule having an open end recessed into said groove, the opposite end of said capsule being closed, and means for mounting said bellows open end to said manifold means, said mounting means comprising a bracket including an annular body having an inner edge seated in said groove and a cylindrical flange having a free edge extending from the periphery of said body to the open edge of said groove, the inner edge of said body being connected by a continuous weld to the open end of said bellows capsule and the free edge of said flange being connected by a continuous weld to said open edge of said groove in the manifold means, means in said housing for collapsing the bellows capsule; a catheter extending from the housing for conducting fluid from said apparatus to an infusion site, and a conduit in said housing for conducting fluid from said reservoir to said catheter, said passage, said outlets and at least a portion of said conduit being formed in said manifold means, and said needle stop, septa and catheter all being mounted to said manifold means adjacent to the open end of said bellows capsule.
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15. Implantable infusion apparatus comprising:
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a hermetically sealed housing; a passage into said housing; needle stop means at the end of said passage inside said housing; a first needle-penetrable, self-sealing septum mounted in said passage at a selected spacing from said needle stop means; a second septum mounted in said passage at a selected spacing from said first septum thereby to divide said passage into a first segment extending between said needle stop means and said first septum and a second aligned segment extending between said first septum and said second septum; first and second fluid outlets from said first and second passage segments; a pumpable infusate reservoir inside said housing in fluid communication with one of said fluid outlets, said reservoir including rigid manifold means inside the housing, means defining a circular groove with one open edge in said manifold means, a collapsible metal bellows capsule having an open end recessed into said groove, the opposite end of the capsule being closed, and means for mounting said bellows open end to said manifold means at said groove; means in the housing for collapsing the bellows capsule; a catheter extending from the housing for conducting fluid from said apparatus to an infusion site, said manifold means being disk-shaped and said circular groove being located eccentric to the circular periphery of said manifold means so that the groove is displaced away from said catheter, and a conduit in said housing for conducting fluid from said reservoir to said catheter, said passage, said outlets and at least a portion of said conduit being formed in said manifold means and said needle stop, septa and catheter all being mounted to said manifold means adjacent to the open end of said bellows capsule.
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17. Implantable infusion apparatus comprising:
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a rigid discoid header having opposite first and second surfaces; A circular groove in said header second surface; a collapsible bellows capsule having a closed end and an open end; mounting means for mounting said bellows open end to said header second surface, said mounting means including an annular bracket having a peripheral flange and radially inner and outer edges, the inner edge of said bracket being connected along its entire circular length to the capsule open end, said bracket and said capsule open end being seated in said groove so that said flange extends adjacent to the radially outer wall of said groove and connecting means connecting said bracket outer edge along its entire circular length to said header all around said groove; a first passage in said header extending between said header surfaces opposite the bellows capsule; a second passage extending into said header from the periphery thereof; a liquid conduit extending from said first passage to said second passage; a self-sealing inlet port in said header opposite the bellows capsule, said inlet port being accessible from said header first surface, and fluid conduit means extending between said inlet port and the interior of said capsule. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 45)
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34. Implantable infusion apparatus comprising
a rigid manifold having opposite first and second surfaces and a pronounced outwardly projecting mesa positioned at or near the center of said second surface away from the periphery thereof, said mesa having a central perpendicular axis; -
a collapsible fluid-tight infusate chamber having a closed end and an open end; means for mounting the chamber open end in a fluid-tight manner to the manifold first surface opposite said mesa; a self-sealing inlet port in said manifold mesa, said inlet port being accessible from the manifold second surface at the top of said mesa;
fluid conduit means extending between said inlet port and the interior of said chamber; anda first outlet conduit communicating between said manifold first surface inside said chamber and the manifold periphery.
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35. Implantable infusion apparatus comprising
a rigid manifold having opposite first and second surfaces and a central mesa at said second surface, said mesa having a central perpendicular axis; -
a collapsible fluid-tight infusate chamber having a closed end and an open end; means for mounting the chamber open end in a fluid-tight manner to the manifold first surface opposite said mesa; a self-sealing inlet port in said manifold mesa, said inlet port being accessible from the header second surface at the top of said mesa; fluid conduit means extending between said inlet port and the interior of said chamber; a first outlet conduit communicating between said manifold first surface inside said chamber and the manifold periphery; a second self-sealing inlet port in said manifold mesa, said second inlet port being in alignment along said axis with said first inlet port and accessible from the manifold second surface at the top of said mesa; and a second outlet conduit in said manifold communicating between said second inlet port and the periphery of said manifold. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification