Catheter with novel lumens shapes
First Claim
1. An indwelling catheter tube comprising:
- (a) an elongated body of elastomeric material having an outside surface;
(b) a lumen longitudinally formed through said body of elastomeric material and comprising a plurality of longitudinally extending inner wall surfaces, one of said inner wall surfaces in a cross section of said body of elastomeric material taken normal to the longitudinal axis thereof comprising a straight segment, the end points of said straight segment being disposed closer to said outside surface of said body of elastomeric material than the portions of said straight segment therebetween, thereby to define, between said straight segment and said outside surface of said body of elastomeric material radially outwardly from said straight segment, a solid outer wall portion of said catheter tube integrally formed of said elastomeric material.
0 Assignments
0 Petitions
Accused Products
Abstract
Catheter tubes of elastomeric material having novel lumen shapes which prevent occlusion and accommodate continued liquid flow even when kinked. Also, catheter tube slit valves are disclosed, the walls of which are not chemically weakened. Symmetrical and asymmetrical versions of said slit valves are disclosed. Combinations of highly reliable slit valves and catheter tubes are disclosed. Independently operable multi-lumen catheter assemblies of synthetic material, such as silicone rubber are disclosed, wherein the distal end of each lumen is normally closed by a three-position slit valve formed in a catheter tube covering. Multi-lumen catheters, and related methods, are also disclosed wherein the lumens are internal at the proximal and distal ends of the catheter tube but comprise separate tubes in between whereby, following placement of the distal end of the catheter tube in the body cavity of a patient, the unified proximal end of the tube is manipulated, sometimes subcutaneously, with the ultimately exposed tubes being thereafter severed and each equipped with a hub at a convenient exposed body site for selective independent passage of influent and effluent liquid along each lumen.
-
Citations
33 Claims
-
1. An indwelling catheter tube comprising:
-
(a) an elongated body of elastomeric material having an outside surface; (b) a lumen longitudinally formed through said body of elastomeric material and comprising a plurality of longitudinally extending inner wall surfaces, one of said inner wall surfaces in a cross section of said body of elastomeric material taken normal to the longitudinal axis thereof comprising a straight segment, the end points of said straight segment being disposed closer to said outside surface of said body of elastomeric material than the portions of said straight segment therebetween, thereby to define, between said straight segment and said outside surface of said body of elastomeric material radially outwardly from said straight segment, a solid outer wall portion of said catheter tube integrally formed of said elastomeric material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An indwelling catheter tube comprising:
-
(a) an elongated body of elastomeric material having an outside surface; (b) a lumen longitudinally formed through said body of elastomeric material and comprising a plurality of longitudinally extending inner wall surfaces; and (c) prevention means associated with a first of said inner wall surfaces and said outside surface of said elongated body of elastomeric material for preventing occlusion of said lumen and for accommodating fluid flow in said lumen when negative pressure is applied to said lumen relative to said outside surface of said body of elastomeric material, said prevention means comprising a solid outer wall portion of said catheter tube integrally formed of said elastomeric material between said first of said inner wall surfaces and said outside surface of said elongated body of elastomeric material radially outwardly from said first inner wall surface, the distance in a cross section of said body of elastomeric material taken normal the longitudinal axis thereof measured normal to said outside surface between said first of said inner wall surfaces and said outside surface radially outwardly from said first inner wall surface defining the thickness of said solid outer wall portion, said thickness thereof varying from a maximum at the center thereof to a minimum at the ends thereof. - View Dependent Claims (10, 11)
-
-
12. An indwelling catheter tube, comprising:
-
(a) an elongated body of elastomeric material having an outside surface; and (b) a lumen longitudinally formed through said body of elastomeric material said lumen assuming a D-shape in a cross section of said body of elastomeric material taken normal to the longitudinal axis thereof, said D-shape assumed by said lumen in said cross section of said body of elastomeric material comprising; (i) an arcuate inner wall surface; and (ii) a generally linear inner wall surface opposite said arcuate inner wall surface, the ends of said linear inner wall surface in said cross section of said body of elastomeric material being disposed closer to said outside surface of said body of elastomeric material than any other portions of said generally linear inner wall surface, thereby to define, between said linear inner wall surface of said lumen and said outside surface of said body of elastomeric material radially outwardly from said first inner wall surface, a solid outer wall portion of said catheter tube integrally formed of said elastomeric material. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An indwelling catheter tube, comprising:
-
(a) an elongated body of elastomeric material having a cylindrical outside surface; and (b) a lumen longitudinally formed through said body of elastomeric material, said lumen assuming a radially asymmetric shape in a cross section of said body of elastomeric material taken normal to the longitudinal axis thereof, said lumen comprising; (i) a plurality of longitudinally extending inner wall surfaces; and (ii) a longitudinally extending juncture between each end of a first of said inner wall surfaces and the one of said inner wall surfaces adjacent thereto, each of said junctures in said cross section of said body of elastomeric material being disposed closer to said outside surface of said body of elastomeric material than portions of said first inner wall surface between said junctures, thereby to define, between said first inner wall surface of said lumen and said outside surface of said body of elastomeric material radially outwardly from said first inner wall surface, a solid outer wall portion of said catheter tube integrally formed of said elastomeric material, the distance in said cross section of said body of elastomeric material measured normal to said outside surface between said first inner wall surface and said outside surface radially outwardly from said first inner wall surface defining the thickness of said solid outer wall portion, said thickness thereof varying from a maximum at the center thereof to a minimum at the ends thereof. - View Dependent Claims (22, 23, 24)
-
-
25. An indwelling catheter tube, comprising:
-
(a) an elongated body of elastomeric material having an outside surface; and (b) a plurality of lumens longitudinally formed through said body of elastomeric material, first and second lumens of said plurality of lumens assuming a radially asymmetric shape in a cross section of said body of elastomeric material taken normal the longitudinal axis thereof, said first and second lumens each comprising; (i) a plurality of longitudinally extending inner wall surfaces; and (ii) a longitudinally extending juncture between an adjacent pair of said inner wall surfaces, said juncture in said cross section of said body of elastomeric material being disposed closer to said outside surface of said body of elastomeric material than portions of said adjacent pair of said inner wall surfaces proximate to said juncture. - View Dependent Claims (26, 27)
-
-
28. An indwelling catheter tube, comprising:
-
(a) an elongated body of elastomeric material having an outside surface; and (b) a lumen longitudinally formed through said body of elastomeric material said lumen assuming a D-shape in a cross section of said body of elastomeric material taken normal to the longitudinal axis thereof, said D-shape comprising; (i) an arcuate inner wall surface; (ii) a straight inner wall surface opposite said accurate inner wall surface; and (iii) a longitudinally extending juncture between one end of said straight inner wall surface and an adjacent inner wall surface, said juncture in said cross section of said body of elastomeric material being disposed closer to said outside surface of said body of elastomeric material than portions of said straight inner wall surface and said adjacent inner wall surface proximate to said juncture. - View Dependent Claims (29, 30)
-
-
31. An indwelling catheter tube, comprising:
-
(a) an elongated body of elastomeric material having an outside surface; and (b) first and second lumens longitudinally formed through said body of elastomeric material, each of said first and second lumens in a cross section of said body of elastomeric material taken normal the longitudinal axis thereof assuming a D-shape, said first and second lumens being so disposed within said body of elastomeric material that in said cross section of said body of elastomeric material the curved portions of said D-shapes are oriented toward the center of said cross section, thereby to strengthen the structure of said body of elastomeric material to prevent occlusion of said first and second lumens due to negative pressure applied thereto.
-
-
32. An indwelling catheter tube, comprising:
-
(a) an elongated body of elastomeric material having a cylindrical outside surface; (b) first and second lumens longitudinally formed through said body of elastomeric material, each of said first and second lumens assuming a noncircular shape in a cross section of said body of elastomeric material taken normal to the longitudinal axis thereof, and each of said first and second lumens comprising; (i) first and second adjacent longitudinally extending inner wall surfaces; and (ii) a longitudinally extending juncture between said first and second inner wall surfaces, said juncture in said cross section of said body of elastomeric material being disposed closer to said outside surface thereof than portions of said first and second inner wall surfaces proximate to said juncture in said cross-section of said elastomeric body, said first inner wall surfaces of said first and second lumens being disposed adjacent to each other between said second inner wall surfaces; and (c) safety means associated with said first inner wall surfaces of said first and second lumens for preventing occlusion of said first and second lumens to accommodate fluid flow therein when said body of elastomeric material tends to be kinked or laterally compressed by externally imposed stresses. - View Dependent Claims (33)
-
Specification