FLUID-CONDUCTING INSTRUMENT INSERTABLE IN LIVING ORGANISMS

• US 3,640,269 A
• Filed: 10/24/1969
• Issued: 02/08/1972
• Est. Priority Date: 10/24/1969
• Status: Expired due to Term

• Current Assignee: Jose M.R. Delgado
• Original Assignee: Jose M.R. Delgado
• Inventors: Delgado, Jose M. R.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US04/869,170
• Time in Patent Office: 837 Days
• Field of Search: 128/2,2.05,2.1,213,214,260,261,348-351,240-241,239 424/16,19 3/1
• US Class Current: 600/573
• CPC Class Codes: A61M 2039/0211 with multiple chambers in a single site
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276

Abstract

An instrument for insertion in living organisms, having two flexible fluid-impermeable tubes open at one end and provided at the other end with enlarged bag formations which are self-sealing after being punctured with a needle, and a porous bag closed except for an open end with which the open tube ends communicate, with the latter being received in and attached to the open bag end and sealed from the outside of the bag.

Claims

1. An instrument insertable into living organisms, comprising two flexible fluid-impermeable tubes of the same uniform crosssectional size, with said tubes being open at one end and provided at their other ends with enlarged flexible fluidimpermeable bag formations which are puncturable with a hypodermic needle and self-sealing on needle retractions;

and a separate elongated porous bag having an open end and being otherwise closed, and receiving in its open end side-by-side disposed endlengths of said tubes including said open ends thereof, and said tube endlengths being attached to said open bag end and sealed from the outside of said bag, with other endlengths of said tubes including said bag formations being unattached to each other, and said porous bag defining a counterflow path from either of said open tube ends to the other open tube end.

2. An instrument as in claim 1, in which said bag formations are of substantially the same volume.

3. An instrument as in claim 1, in which said tubes are unattached to each other except at their attachment to said open bag end.

4. An instrument as in claim 1, in which said endlengths of said tubes received in said open bag end are of the same length.

5. An instrument as in claim 1, in which the pores of said porous bag are of a size below 0.5 microns.