Probe for dialysis
First Claim
1. A probe for dialysis comprising:
- a handle,a flexible plastic cannula which has a proximal end and a distal end, said proximal end being sealingly connected to said handle,a tubular dialysing membrane positioned around at least a portion of said flexible plastic cannula and defining a proximal end and a distal end, said proximal end of said membrane being sealingly connected to said handle and said distal end of said membrane being sealingly connected to said cannula, said cannula forming at least a wall of first and second lumens of said probe which are in fluid communication with one another at said distal end of said cannula, said membrane forming a wall portion of at least said first lumen, andan axially movable needle which extends through said handle and said cannula to a tip end which is positionable beyond said distal end of said cannula,said handle defining a first fluid medium channel in fluid communication with said first lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
A dialytic probe is provided with an insertion needle sharpened at one end, which is surrounded by a flexible plastic cannula, and may be removed after introduction of the probe. The plastic cannula is covered at least partly by a tubular dialyzing membrane which is bonded to the plastic cannula at the distal end and to a handle at the other end, thus forming a fluid-tight seal. The space between the plastic cannula and dialyzing membrane is divided along the length of the probe, such that two passages or lumens of essentially crescent-shaped cross-section are formed, with a flow-connection at the distal end of the plastic cannula, and with a connection to one of separate ingoing and outgoing lines each. The lumen of the plastic cannula may be connected to a drug feeder line. The handle holds the ingoing and outgoing lines and a potential drug feeder line of the probe.
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Citations
16 Claims
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1. A probe for dialysis comprising:
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a handle, a flexible plastic cannula which has a proximal end and a distal end, said proximal end being sealingly connected to said handle, a tubular dialysing membrane positioned around at least a portion of said flexible plastic cannula and defining a proximal end and a distal end, said proximal end of said membrane being sealingly connected to said handle and said distal end of said membrane being sealingly connected to said cannula, said cannula forming at least a wall of first and second lumens of said probe which are in fluid communication with one another at said distal end of said cannula, said membrane forming a wall portion of at least said first lumen, and an axially movable needle which extends through said handle and said cannula to a tip end which is positionable beyond said distal end of said cannula, said handle defining a first fluid medium channel in fluid communication with said first lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification