Retention drainage catheter
AssigneeLamina Solutions LLC
InventorsJohn D. Adams, Jr., Dean Brent Barron
Life of this patent
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Abstract
A multi-lumen catheter, for insertion into and draining a body cavity, that mitigates the risk of obstruction of the drainage ports and drainage lumen of the catheter, reduces the detrimental effects caused by the suction forces of the drainage ports on the body cavity being drained, and reduces the risk of infection of the body cavity being drained by decreasing the residual volume of fluid retained in the body cavity being drained. These advantages are achieved by the novel approach of disposing a perforated filter membrane over a segmented retention element and also over the drainage ports of the drainage lumen of the catheter thereby creating internal interstitial drainage channels and internal interstitial drainage cavities.
Claims23
A drainage catheter comprising:
- a flexible elongated cylindrical element having a proximal end and a distal portion with a distal end for inserting into a bladder, wherein the flexible elongated cylindrical element has at least one drainage port with a cross sectional drainage area in fluid communication with a drainage lumen disposed within the flexible elongated cylindrical element;
- a filter membrane having a plurality of perforations and disposed over the distal portion of the flexible elongated cylindrical element;
- and
- a segmented expandable retention element that has a first non-expanded state and a second expanded state, wherein the segmented expandable retention element forms at least one internal interstitial drainage channel disposed from a distal end of the segmented expandable retention element to a proximal end of the segmented expandable retention element in the second expanded state and is in fluid communication with said at least one drainage port of the flexible elongated cylindrical element.
A drainage catheter comprising:
- a flexible elongated cylindrical element having a proximal end and a distal portion with a distal end for inserting into a bladder, wherein the flexible elongated cylindrical element has at least one drainage port and at least two lumina disposed within the flexible elongated cylindrical element;
- a filter membrane having a plurality of perforations and affixed to the flexible elongated cylindrical element at the distal portion;
- and
- a segmented expandable retention element that has a first non-expanded state and a second expanded state in fluid communication with at least a first lumen of said at least two lumina within the flexible elongated cylindrical element, wherein the segmented expandable retention element is disposed between the flexible elongated cylindrical element and the filter membrane and forms at least one internal interstitial drainage channel disposed from a distal end of the segmented expandable retention element to a proximal end of the segmented expandable retention element in the second expanded state and is in fluid communication with said at least one drainage port of the flexible elongated cylindrical element.
Dependencies are inferred from the claim text.