US 10,092,724 B2 · Retention drainage catheter

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 or a membrane having a relatively large entry port(s) between membrane struts over a segmented retention element and also over the drainage port(s) of the drainage lumen of the catheter thereby creating internal interstitial drainage channels and internal interstitial drainage cavities.

Claims21

Dependent claims

A drainage catheter comprising:

a flexible elongated cylindrical element comprising a drainage port;
a filter membrane comprising a membrane entry port disposed between membrane struts, wherein the membrane entry port has an individual cross sectional area that is equal to or larger than the cross sectional drainage area of the drainage port, wherein the drainage port is covered by the filter membrane;
and
a segmented expandable retention element, wherein the expandable retention element is disposed between the flexible elongated cylindrical element and the filter membrane.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/546,382Filed 18 Nov 2014 · continuation in part

Priority

7 May 2013

Published

US 2015/0094696 A12 Apr 2015

Granted

9 Oct 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61M 25/0017
Catheters; Hollow probes: specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
A61M 1/84
Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems:…
A61M 1/86
Drainage tubes; Aspiration tips: connectors between drainage tube and handpiece, e.g. drainage tubes detachable from handpiece
A61M 1/87
Drainage tubes; Aspiration tips: details of the aspiration tip, not otherwise provided for

Family

Application61/820,532Us provisional application · filed 7 May 2013

Application61/826,869Us provisional application · filed 23 May 2013

Application14/272,270Parent of this continuation-in-part · filed 7 May 2014

US 2015/0094696 A1Pre-grant publication · published 2 Apr 2015

US 10,092,723 B2Related patent

US 2014/0336624 A1Published application

US 2016/0213881 A9Published application

US 10,092,724 B2This patent

From the US filing history. Foreign family members aren’t listed.

Retention drainage catheter

Life of this patent

Retention drainage catheter

Life of this patent

Abstract

Claims21