SYSTEMS AND METHODS FOR EN BLOC REMOVAL OF UNDESIRABLE MATERIAL FROM PASSAGEWAYS

• US 20160135829A1
• Filed: 11/13/2015
• Published: 05/19/2016
• Est. Priority Date: 11/13/2014
• Status: Abandoned Application

• Current Assignee: AngioDynamics, Inc.
• Original Assignee: AngioDynamics, Inc.
• Inventors: Holochwost, Kevin, DiCarlo, Paul
• Application Number:
  US14/940,289
• Publication Number:
  US 20160135829A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/00858 high friction or non-slip
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2217/005 with suction drainage system

Abstract

The present disclosure relates to systems and methods for removing obstructions or occlusions from vascular and non-vascular passageways. More particularly, the present disclosure relates to systems and methods for en bloc removal of soft fresh thrombi and large emboli within the circulatory system and reinfusing fluid back into the patient to minimize fluid loss.

Claims

14. A system for removing an undesirable material from within a vessel, the system comprising:

a first cannula having a proximal end, a distal end and a Lumen extending therebetween;

wherein a distal portion of the cannula is moveable between a first configuration and a second configuration larger than the first configuration; and

wherein the distal portion of the cannula includes an inner wall comprising a first material having a first coefficient of friction and a second material having a second coefficient of friction different than the first material, wherein the first and second materials are arranged in a spiral pattern;

a second cannula in fluid communication with the first cannula and having its distal end situated in spaced relation to the distal end of the first cannula, such that fluid removed from the site of interest by the first cannula can be directed along the second cannula and reinfused through the distal end of the second cannula; and

a pump, in fluid communication with the proximal end of the first cannula to provide a sufficient suction force for generating a vortex flow through the expanded distal and to permit removing the undesirable material from the site of interest, while in fluid communication with the second cannula, to provide a sufficient continuous reinfusion force so as to reintroduce the fluid flow removed from the site of interest.

15-1. The method of claim 15, wherein the distal end of the first cannula expands from a first diameter to a second diameter larger than the first diameter to remove large embolic emboli.