Peritoneal dialysis catheter
First Claim
1. A peritoneal catheter which comprises a flexible catheter tube having a proximal and a distal end portion, said distal end portion defining flow port means for fluid communication between the bore of the catheter tube and the peritoneal cavity, said catheter carrying spaced porous cuff means to facilitate permanent securance of the catheter to the abdominal wall, the improvement comprising, in combination:
- said catheter tube defining, in its natural, unstressed condition, a bent segment forming an arc in a range of 100°
to 180°
between said porous cuff means, said bent segment, in use, extending in a tunnel formed through the abdominal wall in its relatively unstressed configuration to direct the distal end portion toward a caudel direction within the peritoneal cavity of the patient while the proximal end also projects, when viewed by an onlooker, downwardly.
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Reexamination
Accused Products
Abstract
A peritoneal catheter comprises a flexible catheter tube carrying porous cuff means to facilitate permanent securance of the catheter to the abdominal wall. The catheter tube defines, in its natural, unstressed condition, a bent segment adjacent the porous cuff means. This permits the catheter to be mounted in a tunnel formed through the abdominal wall in relatively unstressed configuration with both ends pointing downwardly.
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Citations
4 Claims
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1. A peritoneal catheter which comprises a flexible catheter tube having a proximal and a distal end portion, said distal end portion defining flow port means for fluid communication between the bore of the catheter tube and the peritoneal cavity, said catheter carrying spaced porous cuff means to facilitate permanent securance of the catheter to the abdominal wall, the improvement comprising, in combination:
said catheter tube defining, in its natural, unstressed condition, a bent segment forming an arc in a range of 100°
to 180°
between said porous cuff means, said bent segment, in use, extending in a tunnel formed through the abdominal wall in its relatively unstressed configuration to direct the distal end portion toward a caudel direction within the peritoneal cavity of the patient while the proximal end also projects, when viewed by an onlooker, downwardly.- View Dependent Claims (2, 3, 4)
Specification
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- Resources
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Current AssigneeCurators of the University of Missouri (University of Missouri)
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Original AssigneeCurators of the University of Missouri (University of Missouri)
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InventorsTwardowski, Zbylut J., Nolph, Karl D.
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Primary Examiner(s)Pellegrino, Stephen C.
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Application NumberUS07/014,161Time in Patent Office587 DaysField of Search604/175, 604/29, 604/280, 604/281US Class Current604/175CPC Class CodesA61M 1/285 Catheters therefor
