Angiodynamics, Inc.

Theodore J Beyer

William M Appling

Carol L Lancette

Giorgio Di Palma

William A Cartier

Joe Denton Brown

William C Hamilton

Ralph A Meyer

Eamonn P Hobbs

Angelo J Tarricone

Raymond Lareau

J Paul Santerre

Benjamin Bell

Jeannette Ho

Joel E Perchik

An endovascular laser treatment device for causing closure of a blood vessel uses an optical fiber adapted to be inserted into a blood vessel. An inner sleeve is arranged around a distal portion of the optical fiber core such that both distal ends of the inner sleeve and the optical fiber core form an enlarged light emitting face. The enlarged emitting face provides substantially lower power density while providing the same amount of total energy during a treatment session. An outer sleeve arranged around the inner sleeve acts as a spacer to position the light emitting face away from an inner wall of the blood vessel. The enlarged light emitting face and the outer sleeve acting as a spacer reduces the possibility of thermal run-away and device damage, and reduce the possibility of vessel perforations, leading to less bruising, post-operative pain and other clinical complications. In yet another aspect of the present invention, a spacer comprises an inner sleeve and an outer sleeve both arranged around a distal portion of the core to prevent the laser light from traveling laterally and to position the light emitting face away from an inner wall of the vessel. The inner sleeve can be a heat resistive material such as ceramic and the outer sleeve can be, for example, a metallic sleeve to provide structural integrity and strength to the distal section of the treatment device.

Method of making an endovascular laser treatment device for causing closure of a blood vessel

A multilumen catheter assembly and method of making the catheter assembly is provided that involves providing a plurality of tubes, each tube having a first end, a second end, at least one lumen, and at least one surface, selectively heating at least a portion of the surface of at least a first tube of the plurality of tubes, and contacting the selectively heated portion of the tube with a portion of the surface of a second tube to form a multilumen catheter shaft that is joined together along at least a portion of the length of the catheter shaft.

Multilumen catheters and method of manufacturing

A vascular access catheter is disclosed that has a catheter shaft with a distal end portion with a distal tip having a sloped face that is positioned at an acute angle from the distal tip relative to a longitudinal axis of the catheter shaft. A first, second, and third lumen extend longitudinally through the catheter shaft. The third lumen is configured for receiving a guidewire and may extend a partial length of the catheter or substantially the entire length of the catheter. The first lumen has an aperture located in the angled edge distal end portion of the catheter next to the distal tip and communicates with the first lumen. The second lumen has an aperture that is positioned in the outer surface of the catheter shaft that is in communication with the second lumen, and is spaced proximally from the first lumen aperture. The catheter includes a fluoropolymer additive with specific compositions and/or purity levels.

Dialysis catheters with fluoropolymer additives

A compact retrievable blood clot filter has a filter section, a releasable lock and an alignment section connected to the filter section. Alignment ribs of the alignment section have releasable upstream ends that are locked to the filter by the releasable lock. The releasable upstream ends of the alignment ribs are capable of being released from the releasable lock so that during retrieval of the filter, the alignment ribs can slide through the endothelial tissue that may have grown around the alignment ribs.

Method of retrieving a blood clot filter

An endovascular laser treatment device for causing closure of a blood vessel uses an optical fiber adapted to be inserted into a blood vessel. An inner sleeve is arranged around a distal portion of the optical fiber core such that both distal ends of the inner sleeve and the optical fiber core form an enlarged light emitting face. The enlarged emitting face provides substantially lower power density while providing the same amount of total energy during a treatment session. An outer sleeve arranged around the inner sleeve acts as a spacer to position the light emitting face away from an inner wall of the blood vessel. The enlarged light emitting face and the outer sleeve acting as a spacer reduces the possibility of thermal run-away and device damage, and reduce the possibility of vessel perforations, leading to less bruising, post-operative pain and other clinical complications.

Device and method for endovascular treatment for causing closure of a blood vessel

An endovascular treatment method for causing closure of a blood vessel is provided. The method includes inserting into a blood vessel an optical fiber having a core through which a laser light travels and a spacer sleeve arranged around a distal portion of the core. A distal end of the core defines an enlarged light emitting face, which advantageously provides substantially lower power density while providing the same amount of total energy during a treatment session. After the insertion, laser light is applied through the light emitting face while the inserted optical fiber and spacer sleeve are longitudinally moved. The spacer sleeve positions the light emitting face away from an inner wall of the blood vessel and application of the laser light causes closure of the blood vessel.

Retrievable blood clot filter

A compact blood clot filter having an alignment section that overlaps with a filter section in an axial direction is provided. The filter section has filter struts that extend radially and longitudinally from a hub. The alignment section has alignment struts in which the downstream end of each alignment strut forms a downstream junction with the downstream end of an adjacent alignment strut while the upstream end of each alignment strut forms an upstream junction with the upstream end of an adjacent alignment strut.

Blood clot filter

A vascular access catheter is disclosed that has a catheter shaft with a distal end portion with a distal tip having a sloped face that is positioned at an acute angle from the distal tip relative to a longitudinal axis of the catheter shaft. A first, second, and third lumen extend longitudinally through the catheter shaft. The third lumen is configured for receiving a guidewire and may extend a partial length of the catheter or substantially the entire length of the catheter. The first lumen has an aperture located in the angled edge distal end portion of the catheter next to the distal tip and communicates with the first lumen. The second lumen has an aperture that is positioned in the outer surface of the catheter shaft that is in communication with the second lumen, and is spaced proximally from the first lumen aperture.

Catheter with open faced sloped end portion

A multiple tube catheter, such as a hemo-dialysis catheter, has first and second tubes which are attached to each other over a zone by one or more longitudinally extending wires which joins the two tubes over that zone. When a catheter is implanted in the patient, the attached zone is within the patient so that the catheter cannot be removed or advanced. When the catheter is to be removed, the longitudinally extending wire or wires are pulled proximally out of the tubes involved so that the two tubes can be separated and individually removed. A flexible separating prong within the patient and proximal of the zone holds the tubes apart to further assure that the catheter cannot be moved.

Catheter retention

A catheter retention assembly and method of use with a catheter. The assembly has a carrier system and a cuff positioning device with an in-growth cuff and a lumen having an inner wall adapted to be mounted on the outer surface of the catheter, and a carrier system with an inner surface and an outer surface in contact with the inner wall of the cuff positioning device. The carrier system holds the lumen in a first radial state. When the carrier system is removed, the lumen contracts to a second radial state, and the inner wall of the cuff positioning device provides sufficient surface adherence to the outer surface of the catheter, so as to maintain the position of the cuff positioning device relative to the catheter, and to allow for catheter exchange.

Catheter retention assembly and method of use

A compact blood clot filter having an alignment section that overlaps with a filter section in an axial direction is formed from a single tube without any welding points to provide high structural integrity, low profile and low manufacturing cost. The filter section has filter struts that extend radially and longitudinally from a hub. The alignment section has alignment struts in which the downstream end of each alignment strut forms a junction with the downstream end of an adjacent alignment strut while the upstream end of each alignment strut forms a junction with the upstream end of an adjacent alignment strut and with one of the filter struts to ensure symmetrical deployment of the filter struts and provide stable centering of the filter section.

Growing community of inventors

Queensbury, NY, United States of America

Theodore J Beyer