Medical Components, Inc.

Twincath, LLC

Other

Twineath, L.l.c.

John Stephens

Donald A. Schon

Earl W. Voorhees

Mahase Nardeo

Kevin Sanford

Timothy Schweikert

Donald A Schon

Timothy M Schweikert

Anthony J Madison

John M Stephens

Kevin E Sanford

Earl W Voorhees, Jr

Earl W Voorhees

A multilumen catheter assembly includes a unitary portion and at least two distal end tubes extending distally from the unitary portion. The unitary portion includes an exterior having a generally circular shape in cross section and is attached to the at least two distal end tubes. In one embodiment, the catheter assembly may be made by extruding a unitary tube having internal longitudinally extending lumens, then splitting the unitary tube at a distal end portion of the unitary tube to form the at least two distal end tubes. The at least two distal end tubes are then ground and polished. In another embodiment, the catheter assembly may be made by extruding the at least two distal end tubes and permanently bonding proximal ends thereof to form the unitary portion.

Multi-lumen catheter

A dilator () for expanding a vessel incision to assist insertion of a catheter thereinto and having a distal end () and a proximal end (). The dilator has two portions () that are assembled together at a hinge () permitting angled-apart proximal ends () of the two portions at the proximal end () to be squeezed together about the hinge which slightly spreads apart the respective distal ends () of the two portions to enlarge the incision into the vessel. A spring () biases apart the proximal ends of the two portions to maintain the two distal ends () together until pried apart as desired to dilate the vessel incision.

Pivoting dilator

A multilumen catheter assembly including an elongated body defining a first lumen having a sidewall extending between its proximal end and a first lumen distal end proximate the body distal end and a first distal opening disposed proximate the first lumen distal end, and a second lumen connected to the sidewall and extending between the proximal end and a second lumen distal end proximate the body distal end, the second lumen distal end distal of the first lumen distal end. The second lumen includes a second distal opening disposed distally of the first distal opening. A self-expanding protector adjoins the elongate body distally of the first distal opening and extends from an inner edge along the elongate body outwardly and proximally to a free proximal edge that extends circumferentially about the elongate body proximate the first distal opening. The protector defins through-ways that permit blood flow past the protector.

Multi-lumen catheter with protected tip

A method for inserting a multiple catheter assembly into a patient. The assembly includes a first catheter which includes a first distal end region, a first outer surface defining a first lumen, and a first transition region transitioning cross sections of the first outer surface and the first lumen. A second catheter includes a second distal end region, a second outer surface defining a second lumen, and a second transition region transitioning cross sections of the second outer surface and the second lumen. The outer surfaces of the first and second catheters are releasably joined by a splittable bond for allowing first and second distal tips of the assembly to be at least partially longitudinally split from each other. The method includes steps of separating the first and second distal end regions, and inserting the first and second distal tips through an incision and into an area to be catheterized.

Method for inserting a catheter

A method of making a multilumen catheter assembly to include a unitary portion and at least two distal end tubes extending distally from the unitary portion. The unitary portion includes an exterior having a generally circular or oval shape in cross section and includes at least two distal end tubes of generally semi-circular (or other) cross sectional shape extending longitudinally therethrough. The catheter assembly may be made by extruding a unitary tube having internal longitudinally extending lumens (of semi-circular or other shape), then splitting the tube on its distal end portion to form distal end tubes. The tubes are then ground and polished, the finished tubes retaining in combination the cross sectional shape of the unitary extrusion, or the finished tubes can each be finished to another cross sectional shape, or the finished tubes could include a combination of cross sectional shapes over their longitudinal lengths.

Methods of making a multilumen catheter assembly

A multiple catheter assembly () including a first catheter () constructed from a first material and having a first proximal end region (), a first distal end region () terminating in a first distal tip (), and an outer surface () defining at least a first lumen () extending longitudinally therethrough between a first distal () and a first proximal () opening. The first proximal end region () is integrally connected to an extension tube () constructed from a second material. A second catheter () is constructed from the first material and having a second proximal end region (), a second distal end region () terminating in a second distal tip (), and a second outer surface () defining at least a second lumen () extending longitudinally therethrough between a second distal () and a second proximal () opening. The second proximal end region () is integrally connected to an extension tube () constructed from the second material. The first lumen () and the second lumen () are independent from each other for facilitating simultaneous flow in opposite directions. The outer surfaces () of the first and second catheters are releasably joined for allowing the first and second distal tips () to be at least partially longitudinally split from each other.

Splittable multiple catheter assembly

A port () for a catheter assembly (), including a body () and a cover () and having a distal discharge port () for connection to an implanted catheter assembly. Within the body is a longitudinal U-shaped channel () extending to a proximal body wall () from the distal body wall () along a longitudinal axis parallel to the axis of the discharge port (). The channel has a rounded bottom () and is also rounded at the channel ends () at the distal and proximal body walls. The cover () provides for penetration by a syringe needle and seals upon needle withdrawal, with the cover having an inside surface () concave and rounded between the distal and proximal ends and also longitudinally, being generally smoothed into the channel sides and ends. The port has no inner sharp edges or corners and eliminates blood clotting and unwanted growth sites.

Catheter infusion port

A multilumen catheter assembly and methods for making and inserting the same are provided. The catheter assembly includes a unitary catheter and at least two distal end tubes which extend distally from the unitary catheter. The at least two lumens in the unitary catheter are in fluid communication with passageways through the distal end tubes. The catheter assembly may be made by extruding a unitary catheter tube having internal longitudinally extending lumens, then splitting the tube on its distal end portion to form distal end tubes. The tubes are then ground and polished to form a smooth surface on the exterior of the tubes. The catheter assembly may also be made by forming an outer layer on at least two longitudinally extending catheters while leaving two distally extending portions of the tubes outside the outer layer to form the distal end tubes. The multilumen catheter assembly may be inserted in a patient for acute and chronic catheterization and subcutaneously tunneled and inserted using a single insertion procedure while leaving the distal end tubes within the vessel capable of free movement and sealing the insertion site into an area to be catheterized.

Multilumen catheter assembly and methods for making and inserting the same

A multilumen catheter assembly is provided, which includes a unitary portion and at least two distal end tubes extending distally from the unitary portion. The unitary portion includes an exterior having a generally round or oval shape in cross section and includes at least two distal end tubes of generally circular (or other) cross sectional shape extending longitudinally therethrough. The catheter assembly may be made by extruding a unitary tube having internal longitudinally extending lumens (of circular or other shape), then splitting the tube on its distal end portion to form distal end tubes. The tubes are then ground and polished, the finished tubes retaining in combination the generally oval cross sectional shape of the unitary extrusion, or the finished tubes can each be finished to a circular, or other, cross sectional shape; or the finished tubes could include a combination of cross sectional shapes over its longitudinal length.

Splittable multilumen catheter assembly

A multilumen catheter assembly is provided, which includes a unitary portion and at least two distal end tubes extending distally from the unitary portion. The unitary portion includes an exterior having a generally round or oval shape in cross section and includes at least two distal end tubes of generally circular (or other) cross sectional shape extending longitudinally therethrough. The catheter assembly may be made by extruding a unitary tube having internal longitudinally extending lumens (of circular or other shape), then splitting the tube on its distal end portion to form distal end tubes. The tubes are then ground and polished, the finished tubes retaining in combination the generally oval cross sectional shape of the unitary extrusion, or the finished tubes can each be finished to a circular, or other, cross sectional shape, or the finished tubes could include a combination of cross sectional shapes over its longitudinal length.

Multilumen catheter and methods for making the catheter

A method for inserting a double catheter assembly into an area of a body to be catheterized is provided. A formula is included for determining the optimal size of dilator device to be used in the method provided.

Method for inserting a multiple catheter assembly

A self-retaining catheter assembly is provided which includes a first and second catheter and a retaining sleeve. The first and second catheters each have an exterior surface and an interior surface defining a lumen which extends longitudinally through the catheter. The first catheter has a proximal portion which is for placement within a first subcutaneous area, and the second catheter has a proximal portion which is for placement within a second subcutaneous area. The first and second catheters also each have distal portions for placement within an area to be catheterized. The retaining sleeve is positioned around a portion of the exterior surfaces of the catheters which is located proximal to the distal portions of the catheters. The portions of the exterior surfaces of the catheters within the retaining sleeve are in a juxtaposed relationship and the retaining sleeve is positioned such that when the distal portions of the first and second catheters are within the area to be catheterized, the retaining sleeve is outside the area to be catheterized and distal to the first and second subcutaneous areas, and the assembly is secured in place.

Growing community of inventors

Paradise Valley, AZ, United States of America

Donald A Schon