Hemodialysis-double dialyzers in parallel

• US 6,117,100 A
• Filed: 06/05/1998
• Issued: 09/12/2000
• Est. Priority Date: 06/06/1997
• Status: Expired due to Fees

• Current Assignee: Allen W. Helmandollar, Kathleen M. Powers, Michael J. Wilkowski
• Original Assignee: Allen W. Helmandollar, Kathleen M. Powers, Michael J. Wilkowski
• Inventors: Powers, Kathleen M., Helmandollar, Allen W., Wilkowski, Michael J.
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): Huseman, Cheryl L
• Application Number:
  US09/092,182
• Time in Patent Office: 830 Days
• Field of Search: 210/321, 604/5, 604/65, 604/902, 422/101, 435/240, 436/526
• US Class Current: 604/6.11
• CPC Class Codes: A61M 1/16 with membranes
• CPC Class Codes: A61M 1/1633 with more than one dialyser unit
• CPC Class Codes: A61M 2202/0498 Urea
• CPC Class Codes: A61M 2205/15 Detection of leaks
• CPC Class Codes: B01D 61/243 Dialysis
• CPC Class Codes: B01D 61/28 Apparatus therefor

Abstract

The delivered dose of hemodialysis in large patients is often less the adequate. The present invention provides a method and apparatus for dialysis which increases the clearance of urea in patients weighing 80 kilograms or more. The apparatus is comprised of two dialyzers which may be connected to a patient in parallel configuration. The present invention can be practiced with any commercially available dialyzers and dialysis machines without requiring expensive modifications which negate manufacturers warranties and inherent safety features. The present invention provides a safe, cost effective way to increase the delivered dose of hemodialysis in patients weighing 80 kilograms or more.

Claims

1. An apparatus for use in blood dialysis comprising two dialyzers which may be connected to a patient in parallel;

(a) each said dialyzer being divided into two compartments by a semipermeable membrane;

said apparatus further comprising

(b) an inlet line connected to each said dialyzer for conveying blood from the vascular system of said patient into each said dialyzer;

(c) an outlet line connected to each said dialyzer for conveying blood from each said dialyzer and back to the patient;

(d) means for pumping blood through each dialyzer and back to the patient; and

(e) a dialysis solution delivery system, wherein said inlet line and said outlet line are connected to said dialyzer via an adaptor comprised of flexible tubing in the shape of a "Y", said tubing comprising male and female screw on locks for connecting the dialyzers to the inlet and outlet lines.

2. A method for effecting hemodialysis on a patient, which comprises:

a) conveying blood from a patient in need of hemodialysis into an inlet line of a dialyzing apparatus; and

b) returning blood to said patient through an outlet line of said dialyzing apparatus;

wherein said dialyzing apparatus is the apparatus of claim 1.

3. A method of performing dialysis on a patient, comprising:

a) selecting as the patient a human whose gross body weight is at least 80 kilograms;

b) conveying blood from the human patient into an inlet line of a dialyzing apparatus and removing uremic toxins from blood of said human patient; and

c) returning the blood to said human patient through an outlet line of said dialyzing apparatus;

wherein said dialyzing apparatus is the apparatus of claim 1.