Direct monitoring of interstitial fluid composition
First Claim
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1. A system for sampling body fluids, the system comprising:
- an implantable catheter for sampling body fluid;
a pump for transporting a volume of the body fluid out of the catheter;
a volume determination unit for determining the volume of the body fluid; and
a control means for controlling the pump based on the determined volume of the body fluid.
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Abstract
The present invention generally relates to a system for sampling body fluids. In particular, the system has an implantable catheter for introduction into a tissue, a pump for transporting a volume of the body fluid out of the catheter, a volume determination unit for determining the volume of fluid and a control means for controlling the pump means based on the determined volume of body fluid.
158 Citations
24 Claims
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1. A system for sampling body fluids, the system comprising:
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an implantable catheter for sampling body fluid;
a pump for transporting a volume of the body fluid out of the catheter;
a volume determination unit for determining the volume of the body fluid; and
a control means for controlling the pump based on the determined volume of the body fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for sampling body fluids, the system comprising:
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an implantable catheter for withdrawing body fluid; and
a pump means for transporting a volume of body fluid out of the catheter, wherein the pump means withdraws fluid with an overall flow rate of below than 10 nanoliters per minute from the catheter. - View Dependent Claims (18, 19, 20, 21, 22)
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23. The system for sampling body fluids, comprising:
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an implantable dual channel catheter for withdrawing body fluid;
a pump means for transporting a volume of body fluid from a first channel of the catheter; and
vent means for venting a second channel of the catheter with air or gas. - View Dependent Claims (24)
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Specification