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US 5,556,390 AGranted
Catheter with oval or elliptical lumens
AssigneeQuinton Instrument Company
InventorAllen J. Hicks
Life of this patent
Estimating the term…
Abstract
A single or multiple lumen catheter having one or more non-circular, oval, elliptical or oblong shaped lumens therein and wherein the cross sectional shapes of a plurality of the lumens in the multiple lumen catheters are opposed with respect to each other to minimize the existence of sharp corners or flow restriction areas in the lumen and minimizing the occurrence of septum or catheter wall deflection while maximizing the cross sectional area of the lumens of the catheter.
Claims31
A dual lumen catheter for use in the body of the patient comprising;
- an elongated and generally cylindrical body portion having distal and proximal end portions and a pair of opposingly oriented lumens extending therebetween wherein the cross sectional area of said catheter includes each of said lumens formed of a first curved end with a first acute radius of curvature and a second curved end with a second acute radius of curvature and said first radius of curvature is greater than said second radius of curvature and said first and second curved ends face each other and further include generally elongate side portions therebetween.
A catheter for use in the body of the patient comprising;
- an elongated and generally cylindrical body portion having distal and proximal end portions and at least one lumen extending therebetween wherein the cross sectional area of said catheter includes at least one lumen formed by a first curved end with a first acute radius of curvature and a second curved end with a second acute radius of curvature and further includes generally elongate side portions therebetween and wherein said first radius of curvature of said first curved end faces said second radius of curvature of said second curved end and said second radius of curvature of said second curved end faces said first radius of curvature of said first curved end and said first radius of curvature of said first curved end is generally less than approximately one-half of said second radius of curvature of said second curved end.
A catheter for use in the body of the patient comprising;
- an elongated and generally cylindrical body portion having distal and proximal end portions and at least one lumen extending therebetween wherein the cross sectional area of said at least one lumen of said catheter is ovoid shaped and is formed by a first curved end with a first acute radius of curvature and a second curved end with a second acute radius of curvature wherein said first and second curved ends face each other and said first acute radius is less than said second acute radius and further include generally elongate side portions therebetween.
A catheter for use in the body of the patient comprising;
- an elongated and generally cylindrical body portion having distal and proximal end portions and at least one lumen extending therebetween wherein the cross sectional area of said catheter includes at least one lumen formed of a first curved end with a first acute radius of curvature and a second curved end with a second acute radius of curvature wherein said second radius of curvature is less than said first radius of curvature and said first radius of curvature faces said second radius of curvature and said second radius of curvature faces said first radius of curvature and said lumen further includes a pair of generally elongate side portions extending between said first and second curved ends wherein said side portions face each other.
A dual lumen catheter for use in the body of the patient comprising;
- an elongated and generally cylindrical body portion having distal and proximal end portions and a pair of opposingly oriented lumens extending therebetween wherein the cross sectional area of each of said lumens of said catheter is ovoid shaped and is formed by a first curved end with a first acute radius of curvature and a second curved end with a second acute radius of curvature wherein said first and second curved ends face each other and further include generally elongate side portions therebetween.
A dual lumen catheter for use in the body of the patient comprising;
- an elongated and generally cylindrical body portion having distal and proximal end portions and a pair of opposingly oriented lumens extending therebetween wherein the cross sectional area of said catheter includes said lumens being formed of a first curved end with a first acute radius of curvature and a second curved end with a second acute radius of curvature wherein said second radius of curvature is less than said first radius of curvature and said first radius of curvature faces said second radius of curvature and said second radius of curvature faces said first radius of curvature and said lumen further includes a pair of generally elongate side portions extending between said first and second curved ends wherein said side portions face each other.
Dependencies are inferred from the claim text.