Self-expanding cannula and a method for applying and positioning a self-expanding cannula
First Claim
1. A method for positioning a self-expanding cannula within a human or an animal patient having a skin, the method comprising:
- positioning a proximal end of the self-expanding cannula in or adjacent a wall of the patient,the self-expanding cannula comprising a body encompassing a lumen, wherein the body of the self-expanding cannula is capable of passively expanding said lumen from a closed diameter to an opened diameter;
positioning a distal end of the self-expanding cannula through the skin of the patient to externally communicate the lumen of the self-expanding cannula with an external environment outside of the patient; and
securing the distal end of the self-expanding cannula to an extracorporeal fluid handling system located in the external environment outside of the patient;
thereby defining an operative position of the self-expanding cannula wherein, in the operative position, the proximal end is positioned in or adjacent the wall, and the distal end protrudes through the skin to provide communication of the lumen of the self-expanding cannula with the fluid handling system located in the external environment outside of the patient.
2 Assignments
0 Petitions
Accused Products
Abstract
A self-expanding cannula providing a conduit through a skin between an inside of a corpus and an outside of the corpus is disclosed. The self-expanding cannula includes a body encompassing a lumen, and has a distal-end to be positioned outside of the corpus for attachment to an extracorporeal fluid handling system and having a proximal-end to be positioned inside of the corpus, for attachment to an organ of an human or an animal. The body of the self-expanding cannula is constructed from a braided-wire, so that the self-expanding cannula is capable of expanding from a closed diameter to an opened diameter. A catheter-sheath and a catheter-sheath-assembly as well as to a method for applying and positioning a self-expanding cannula, and a catheter-sheath-assembly are disclosed.
36 Citations
21 Claims
-
1. A method for positioning a self-expanding cannula within a human or an animal patient having a skin, the method comprising:
-
positioning a proximal end of the self-expanding cannula in or adjacent a wall of the patient, the self-expanding cannula comprising a body encompassing a lumen, wherein the body of the self-expanding cannula is capable of passively expanding said lumen from a closed diameter to an opened diameter; positioning a distal end of the self-expanding cannula through the skin of the patient to externally communicate the lumen of the self-expanding cannula with an external environment outside of the patient; and securing the distal end of the self-expanding cannula to an extracorporeal fluid handling system located in the external environment outside of the patient; thereby defining an operative position of the self-expanding cannula wherein, in the operative position, the proximal end is positioned in or adjacent the wall, and the distal end protrudes through the skin to provide communication of the lumen of the self-expanding cannula with the fluid handling system located in the external environment outside of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A self-expanding cannula, configured to provide a conduit through a skin between an inside of a corpus and an outside of the corpus, said self-expanding cannula comprising:
-
a body encompassing a lumen, wherein the body comprises braided wire, and wherein the body is configured to passively expand from a closed diameter to an opened diameter, wherein a portion of the braided wire is covered by a flexible membrane, enabling the braided wire to articulate from the closed diameter to the opened diameter, the flexible membrane sealing an interstitial space resultant between the braid openings; a distal end of the body configured to be positioned outside of the corpus and configured for attachment to an extracorporeal fluid handling system; and a proximal end of the body configured to be positioned inside of the corpus, configured for attachment to an organ or a vessel of the corpus, wherein the proximal end of the self-expanding cannula comprises a bare section which does not contain the flexible membrane, in order to provide a flow of a fluid through said interstitial space resultant between the braid openings of said bare section. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
Specification