Active drainage system for use in defined natural or surgically created body cavities or lumina
First Claim
Patent Images
1. A catheter or applicator for draining liquids from within a natural or surgically created body cavity or lumen, with quantitative flow measurement, comprising:
- a shaft, an expandable balloon at a distal end of the shaft, an outer permeable layer on the outside of the balloon, expandable as the balloon is expanded, the shaft having liquid withdrawal channel or lumen, the liquid withdrawal lumen being connected to the permeable layer and establishing a flow path for withdrawing liquid, the shaft further having a lumen for introducing fluid under pressure to inflate the balloon, and a liquid flow sensor for measuring volumetric flow rate, positioned in the flow path of the withdrawn liquid.
2 Assignments
0 Petitions
Accused Products
Abstract
Cavity conforming balloons with active pressure gradients are provided to replace passive reliance on gravity flow of fluid from organs, body lumina, cavities and the like for more accurate and timely assessment and analysis of exudates. Diffuse drug delivery to cavities or lumina can be administered as an adjunct to the drainage process, as can application of brachytherapy.
-
Citations
26 Claims
-
1. A catheter or applicator for draining liquids from within a natural or surgically created body cavity or lumen, with quantitative flow measurement, comprising:
-
a shaft, an expandable balloon at a distal end of the shaft, an outer permeable layer on the outside of the balloon, expandable as the balloon is expanded, the shaft having liquid withdrawal channel or lumen, the liquid withdrawal lumen being connected to the permeable layer and establishing a flow path for withdrawing liquid, the shaft further having a lumen for introducing fluid under pressure to inflate the balloon, and a liquid flow sensor for measuring volumetric flow rate, positioned in the flow path of the withdrawn liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for draining liquids from within a natural or surgically created body cavity or lumen, with quantitative flow measurement, comprising:
-
inserting into the body cavity or lumen a catheter that includes a shaft with an expandable balloon at a distal end of the shaft, with an outer permeable layer on the outside of the balloon, the balloon being deflated on insertion, with an inflation lumen in the shaft that communicates with the interior of the balloon, inflating the balloon by admitting pressurized fluid to substantially fill the body cavity or lumen with the balloon, through a liquid withdrawal lumen in the shaft and extending to the permeable layer, applying suction and withdrawing liquid entering the permeable layer from tissue of the body cavity or lumen, and measuring volumetric flow rate of liquid being withdrawn through the liquid withdrawal lumen. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
Specification