Microdialysis probe and catheter arrangement
First Claim
1. A microdialysis probe and catheter arrangement comprising:
- a catheter carrying in a distal end thereof a probe to be inserted in the body of a living being, said catheter having an elongate catheter body including a first channel for supplying a first fluid and a second channel for returning said first fluid, said first and second channels extending internally within said catheter body from a proximal end thereof to at least said probe, said probe including a microdialysis membrane defining a dialysis chamber communicating with said first and second channels, wherein a third channel extends internally within said catheter body from a proximal end thereof to at least said probe and communicates with said second channel at a point adjacent to a distal end of the microdialysis chamber in order to supply a second fluid to said second channel.
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Accused Products
Abstract
A microdialysis probe and catheter arrangement includes a catheter carrying in a distal end thereof a probe to be inserted in the body of a living being. The catheter has an elongate catheter body including a first channel for supplying a first fluid and a second channel for returning said first fluid. The first and second channels extend internally along the catheter body from a proximal end thereof to the probe. The probe includes a microdialysis membrane defining a dialysis chamber communicating with the first and second channels. A third channel extends internally along the catheter body and communicates with the second channel to supply a second fluid to thereto, thereby to increase the flow rate therein.
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Citations
12 Claims
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1. A microdialysis probe and catheter arrangement comprising:
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a catheter carrying in a distal end thereof a probe to be inserted in the body of a living being, said catheter having an elongate catheter body including a first channel for supplying a first fluid and a second channel for returning said first fluid, said first and second channels extending internally within said catheter body from a proximal end thereof to at least said probe, said probe including a microdialysis membrane defining a dialysis chamber communicating with said first and second channels, wherein a third channel extends internally within said catheter body from a proximal end thereof to at least said probe and communicates with said second channel at a point adjacent to a distal end of the microdialysis chamber in order to supply a second fluid to said second channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of performing a microdialysis process, comprising the steps of:
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feeding a first liquid from a proximal end of a catheter through a first channel extending internally along said catheter;
introducing said first liquid into a microdialysis chamber provided at a distal end of said catheter;
returning said first liquid together with samples collected in said microdialysis chamber to said proximal end through a second channel extending internally along said catheter;
directing a flow of a second liquid from a third channel extending internally along said catheter into said second channel to increase the flow rate therein, the second channel and the third channel each being formed inside a body of the catheter and extending from a proximal end to a distal end thereof, and communicating with each other at a point adjacent to a distal end of the microdialysis chamber. - View Dependent Claims (10, 11, 12)
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Specification