Cryocath Technologies Inc.

Claudia L&uuml;ckge

Dan Wittenberger

Jean-Pierre Lalonde

John W Lehmann

Domenic N Santoianni

Cristian Petre

Marwan Abboud

Philippe Marchand

Fredric L Milder

Sean Carroll

Robert A Martin

Jean-Luc Pageard

Daniel Nahon

Miriam Lane

Leonilda Capuano

Johnny Al Asmar

David Holtan

Abderrahim Benrabah

Ken Chen

A cryogenic catheter includes an outer flexible member having at least one cryogenic fluid path through the flexible member. The at least one fluid path is defined by a plurality of flexible members disposed within the outer flexible member.

Cryosurgical catheter

A medical device for cryotreatment of bodily regions is disclosed. The device comprises an inflatable support structure coupled to the distal end portion of a catheter shaft, the support structure being further enveloped by an expandable membrane to define an expansion chamber between the support structure and the membrane. An inflation lumen is coupled to the support structure to inject an inert, insulating fluid in the support structure, thereby expanding the support structure and the expandable membrane, wherein the resultant expansion chamber formed therebetween is substantially conical in shape. Refrigerant is injected into the expansion chamber, thereby creating localized cooling of tissues adjacent to the expansion chamber, the cooling region being substantially conical in shape. Alternately, a second inflatable support structure is provided inside of the expandable membrane and distal to the first support structure, to define an expansion chamber therebetween that is substantially toroidal in shape, thereby enabling the creation of circumferential cooling regions when refrigerant is injected into said expansion chamber.

Cryotreatment device and method

An elongated catheter device with a distal balloon assembly is adapted for endovascular insertion. Coolant injected through the device may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. Plural balloons may be provided, wherein a secondary outer balloon surrounds a primary inner balloon, the primary balloon being filled with coolant and acting as the cooling chamber, the secondary balloon being coupled to a vacuum return lumen to serve as a robust leak containment device and thermal insulator around the cooling chamber. Various configurations, such as surface modification of the balloon interface, or placement of particles, coatings, or expandable meshes or coils in the balloon interface, may be employed to achieve this function.

Endovascular cryotreatment catheter

A cryogenic catheter having an elongate outer member and a plurality of inner members disposed within the elongate outer member is provided. The inner members define at least one cryogenic path through the outer member. At least one of the inner members has at least one controllable opening formed thereon to selectively release cryogenic fluid. The inner members also include an overtube and an injection tube slideably disposed to one another.

Growing community of inventors

Pierrefonds, Canada

Claudia Lückge

Growing community of inventors

Pierrefonds, Canada

Claudia L&uuml;ckge

Claudia Lückge