Selective positioning drainage catheter
First Claim
1. A drainage catheter for selective positioning within the human vasculature, wherein said drainage catheter comprises a flexible, tubular basic catheter body defining a first and second catheter lumen respectively comprising a pressure channel and a discharge channel;
- a connector at a proximal end of said catheter for respectively connecting the pressure channel to a source of liquid under pressure, and the discharge channel to discharge means;
an inlet opening positioned in a side wall of said catheter adjacent the distal end thereof, said discharge channel communicating with said inlet opening, said pressure channel extending from said proximal end to a point distal of said inlet opening and then curving rearwardly to join said discharge channel at said inlet opening, said pressure channel defining a spray nozzle to direct pressurized fluid in the pressure channel across said inlet opening and into said discharge channel to create a suction adjacent said inlet opening, wherein the side wall of said catheter is substantially imperforate except for the inlet opening anda preformed distal tip portion extending from the distal end of the drainage catheter, said preformed tip portion being formed of a material having the characteristic of retaining a plastic memory and being preformed into a curved spiral configuration for such selective positioning;
wherein said pressure channel provides fluid communication only between said inlet opening and said source of liquid under pressure, and said discharge channel provides fluid communication only between said inlet opening and said discharge means.
3 Assignments
0 Petitions
Accused Products
Abstract
A drainage catheter for selective positioning within the human vasculature which includes a catheter body defining separate pressure and discharge lumens. A connector means at a proximal end of the catheter connects the pressure channel to a source of liquid under pressure. An inlet opening is positioned in the side of the catheter adjacent the distal end thereof and communicates with the discharge channel. The pressure channel extends from the proximal end distally forward of the inlet opening and then curves rearwardly to join the discharge channel at said inlet opening. The pressure channel is shaped to form a spray nozzle to direct pressurized fluid in the pressure channel across said inlet opening and into the discharge channel to create a suction adjacent the inlet opening. A preformed distal tip portion extends from the distal end of the drainage catheter. The preformed tip portion is formed of a material having the characteristic of retaining a plastic memory and is preformed into a curved configuration for selective positioning.
106 Citations
4 Claims
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1. A drainage catheter for selective positioning within the human vasculature, wherein said drainage catheter comprises a flexible, tubular basic catheter body defining a first and second catheter lumen respectively comprising a pressure channel and a discharge channel;
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a connector at a proximal end of said catheter for respectively connecting the pressure channel to a source of liquid under pressure, and the discharge channel to discharge means; an inlet opening positioned in a side wall of said catheter adjacent the distal end thereof, said discharge channel communicating with said inlet opening, said pressure channel extending from said proximal end to a point distal of said inlet opening and then curving rearwardly to join said discharge channel at said inlet opening, said pressure channel defining a spray nozzle to direct pressurized fluid in the pressure channel across said inlet opening and into said discharge channel to create a suction adjacent said inlet opening, wherein the side wall of said catheter is substantially imperforate except for the inlet opening and a preformed distal tip portion extending from the distal end of the drainage catheter, said preformed tip portion being formed of a material having the characteristic of retaining a plastic memory and being preformed into a curved spiral configuration for such selective positioning; wherein said pressure channel provides fluid communication only between said inlet opening and said source of liquid under pressure, and said discharge channel provides fluid communication only between said inlet opening and said discharge means. - View Dependent Claims (2, 3, 4)
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Specification