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Variable Guage Catheter Inc.

Arthur Jacob

Radu Kramer

Liviu Popa-Simil

A catheter and a method facilitate insertion into a blood vessel by providing a tubular wall section with a lumen having a longitudinally extending first volume and a second volume extending side-by-side and contiguous with the first volume. A sector of the tubular wall section is extended side-by-side and contiguous with the second volume of the lumen and is constructed of a material enabling the sector to be collapsed diametrically and nested within the first volume so that the section is provided with limited diametric dimensions. Upon insertion of the section into the blood vessel, the sector is expanded to extend diametrically outside the first volume, thereby rendering the section configured with expanded diametric dimensions and the lumen with a total cross-sectional area for accommodating a desired relatively high volumetric flow rate of fluid through the catheter.

Facilitating percutaneous intravascular access for catheters accommodating high volumetric flow rates

A tissue sampling apparatus and method obtain a sample of tissue from a selected site and place a hemostatic plug at the selected site. The apparatus includes an external needle and an internal needle within the external needle. A chamber in the internal needle is divided by a divider member into a plug compartment for receiving a hemostatic plug, and a sample compartment for receiving a tissue sample. The divider member is resiliently biased into the plug compartment and the internal needle is movable relative to the external needle for admitting the hemostatic plug into the plug compartment and displacing the divider member into the sample compartment, and then closing the chamber. The apparatus then is advanced to the selected site where relative movement between the internal and external needles opens the chamber, allowing the divider member to expel the hemostatic plug from the plug compartment, and admitting a tissue sample into the sample compartment. Subsequent relative movement between the internal and external needles cuts the tissue sample from the surrounding tissue for removal from the selected site upon removal of the apparatus, while the expelled hemostatic plug remains at the site.

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Hackensack, NJ, United States of America

Arthur Jacob