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Systems and methods for percutaneous intravascular access for arteriovenous fistula

a technology of arteriovenous fistula and percutaneous intravascular access, which is applied in the field of systems and methods for percutaneous intravascular access for arteriovenous fistula, can solve problems such as clotting or restricting or affecting the function of veins or arteries

Inactive Publication Date: 2014-02-06
AVENU MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a device and method for elongating, repairing, or creating a new arteriovenous fistula between adjacent blood vessels. The device includes a main body with a flexible lumen and a rigid jaw member with an articulating element that can be opened and closed to clamp tissue between the two vessels. The jaw member has an electrode for applying thermal energy to the tissue to cut and weld it. The device can be inserted into the blood vessel using a guidewire and imaging guidance. The technical effects of the invention include the ability to create a new fistula, elongate an existing fistula, or repair an existing fistula using a minimally invasive device that can be easily inserted and removed.

Problems solved by technology

Such procedures are time consuming, clinician dependent (open to surgical error), and often result in strictures, or clotting of the vein or artery.

Method used

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  • Systems and methods for percutaneous intravascular access for arteriovenous fistula
  • Systems and methods for percutaneous intravascular access for arteriovenous fistula
  • Systems and methods for percutaneous intravascular access for arteriovenous fistula

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Embodiment Construction

[0032]Referring now more particularly to the drawings, one embodiment of a device constructed in accordance with the principles of the present invention is shown. As illustrated in FIGS. 1 and 2, a device 1 comprises a handle 2 with an activation switch 4, an electrical connector 6, and a jaw lever 8. A 4-7 F (French) flexible (70-90 Shore A) polymer main body 12, having a primary lumen 14 and rigid distal jaw member 20, is provided. The main body is attached to the handle 2 at the proximal end and the jaw member 20 at the distal end. The electrical connector 6 allows connection to temperature display and power supply devices for temperature feedback and DC thermal energy delivery, though other modalities such as Radio Frequency (RF) or laser are can be employed. Lever 8 is constructed with a ratcheting mechanism to allow variable incremental pressure (approximately 100 mN / mm2-500 mN / mm2) to electrodes 22 on jaw member 20 (FIG. 2) as desired by the practitioner. To begin the inventi...

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Abstract

A device for extending, elongating, or repairing a previously created arteriovenous fistula between a first blood vessel and an adjacent second blood vessel includes a main body having a primary lumen and an articulating jaw member disposed at the distal end of the main body. The jaw member is configured with two elements to allow rotation of one element about a pivot point to grasp tissue while being rotated. The jaw member is also configured to allow thermal energy delivery to one or both elements of the jaw member that allow tissue welding and cutting with DC, RF, Laser or Ultrasonic energy. A second lumen located within one element of the jaw member is configured to allow advancement over a guidewire into the second vessel while the other element of the jaw member remains within the first blood vessel at the position where the arteriovenous fistula, or aperture, exists between the first and second blood vessel.

Description

[0001]This application claims the benefit under 35 U.S.C. 119(e) of the filing date of Provisional U.S. Application Ser. No. 61 / 678,240, entitled Systems and Methods for Percutaneous Intravascular Access for Arteriovenous Fistula, filed on Aug. 1, 2012, which application is herein expressly incorporated herein by reference, in its entirety.BACKGROUND OF THE INVENTION[0002]In the body, various fluids are transported through conduits throughout the organism to perform various essential functions. Blood vessels, arteries, veins, and capillaries carry blood throughout the body, carrying nutrients and waste products to different organs and tissues for processing. Bile ducts carry bile from the liver to the duodenum. Ureters carry urine from the kidneys to the bladder. The intestines carry nutrients and waste products from the mouth to the anus.[0003]In medical practice, there is often a need to connect conduits to one another or to a replacement conduit to treat disease or dysfunction of...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B18/08
CPCA61B18/085A61B18/1445A61B18/1492A61B18/24A61B2018/00404A61B2018/00601A61B2018/146A61B18/148A61B2018/00619A61B2018/00982
Inventor HULL, JEFFREY E.RITCHART, MARK A.
Owner AVENU MEDICAL
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