Dual access infusion and monitoring system
First Claim
1. A dual access infusion or monitoring system comprising in combinationA. implantable apparatus havinga biocompatible hermetically sealed housing,an inlet passage extending into said housing from an exterior surface thereof, said passage having an outer end adjacent to said housing surface and an inner end located inside the housing,needle stop means at the inner end of said passage;
- 4. a plurality of needle-penetrable, self-sealing septa mounted in said passage at selected different spacings from said needle stop thereby to divide said passage into a plurality of aligned segments; and
5. means defining separate fluid outlets from said passage segments,
2 Assignments
0 Petitions
Accused Products
Abstract
A dual access infusion or monitoring system comprises implantable apparatus and an injection needle. This system enables one to introduce into or withdraw from the apparatus, after it is implanted, a plurality of fluids simultaneously with only a single penetration of the patient'"'"'s skin. The implantable apparatus includes a sealed housing with an inlet passage extending into the housing which passage has an outer end adjacent to the housing surface and an inner end located inside the housing. A needle stop is positioned at the inner end of that passage and self-sealing septa are mounted at different locations along the passage at selected spacings from the needle stop so as to divide the passage into aligned compartments or segments each of which has its own fluid outlet. The injection needle includes a plurality of lumens, the number of same corresponding to the number of different compartments in the apparatus housing. The proximal ends of the lumens are connected to different passages in a hub and the lumens have outlet openings spaced at different locations along the needle from the needle tip in correspondence with the spacings of the housing passage compartments so that when the needle is inserted into the housing passage through the septa until the needle bottoms on the needle stop, each outlet opening in the needle will be positioned in a different compartment in the housing passage, with all of the needle openings being isolated in a fluid-tight manner from one another and from the atmosphere by at least one septum.
418 Citations
12 Claims
-
1. A dual access infusion or monitoring system comprising in combination
A. implantable apparatus havinga biocompatible hermetically sealed housing, an inlet passage extending into said housing from an exterior surface thereof, said passage having an outer end adjacent to said housing surface and an inner end located inside the housing,needle stop means at the inner end of said passage;-
4. a plurality of needle-penetrable, self-sealing septa mounted in said passage at selected different spacings from said needle stop thereby to divide said passage into a plurality of aligned segments; and 5. means defining separate fluid outlets from said passage segments, - View Dependent Claims (3, 5, 6, 7, 8, 9, 11, 12)
-
-
2. an infusate pump inside the housing in fluid communication with one of said housing passage segment fluid outlets,a catheter extending out of said housing, said catheter having at least one lumen for conducting fluid from said pump to an infusion site, anda first fluid outlet in the housing for conducting fluid from said pump to said catheter, and
B. fluid injection means includinga plurality of tubes having proximal and distal ends and separate axial lumens therebetween, the number of tubes in the injection means corresponding to the number of passage segments in the implantable apparatus housing, hub means mounted to the proximal ends of said tubes,means defining separate fluid passages in said hub means extending from different surface locations on the hub means to the lumens of different ones of said tubes, andmeans in said tubes defining outlets from said tube lumens, the axial spacings of said outlets along said injection means corresponding substantially to the spacings of said housing passage segments in said implantable apparatus so that when the injection means are inserted through said septa into said housing passage until the injection means bottom on said needle stop means, said tube outlets are positioned in different ones of said passage segments so that they are isolated from one another and from the atmosphere by at least one septum whereby separate fluid-tight fluid paths exist between said hub means surface locations and said housing passage segment outlets.
-
10. A dual access infusion or monitoring system comprising injection needle means having a longitudinal axis and a tip, said means including
A. concentric inner and outer tubes permanently fixed to one another, said inner tube being longer than said outer tube and each tube having proximal and distal ends and an unobstructed axial lumen therebetween; -
B. a hub mounted to the proximal end of said tubes; C. first and second fluid passages in said hub extending from different surface locations on the hub exterior surface to different ones of said tube lumens; D. a fluid-tight seal extending from the distal end of said outer tube and the outside wall of said inner tube, and E. means defining openings in said tubes that provide outlets from the corresponding lumens of those tubes, said openings being located at selected fixed different axial spacings from said needle means tip so that fluids introduced into said first and second passages can flow simultaneously along said needle means and exit therefrom at said selected different spacings from said tip.
-
Specification