Slideable cannula and method of use
First Claim
1. A method for cannulating an artery, comprising the steps of:
- providing a slideable cannula comprising an elongate tubular member having a proximal end, a distal end, and a lumen therebetween, the distal end comprising a coitugated region and having a preformed angled configuration relative to the proximal end, the slideable cannula further comprising a trocar having a proximal end, a distal end, and a lumen shaped to receive the elongate tubular member;
inserting the elongate tubular member into the lumen of the trocar, the trocar maintaining the tubular member in a substantially linear configuration;
inserting the trocar through an incision in an artery; and
advancing the distal end of the tubular member beyond the distal end of the trocar into the artery, wherein the distal end of the tubular member regains its preformed angle configuration.
1 Assignment
0 Petitions
Accused Products
Abstract
A cannula system having an internally slidable elongate tubular member frictionally anchored within a trocar, and optionally including a flange which acts as a positive stop against the trocar, that can be deployed for various treatments, including aortic cannulation during cardiopulmonary bypass, for example during CABG surgery. The tubular member has a proximal end, a lumen, and a flexible distal end which carries a preformed angled configuration relative to its proximal region and is bendable to a substantially linear configuration. The rigid trocar maintains the cannula in a substantially linear configuration. When the cannula is advanced through the lumen beyond the distal end of the trocar, the tubular member regains its angled configuration. Methods for using the devices herein are also disclosed.
32 Citations
19 Claims
-
1. A method for cannulating an artery, comprising the steps of:
-
providing a slideable cannula comprising an elongate tubular member having a proximal end, a distal end, and a lumen therebetween, the distal end comprising a coitugated region and having a preformed angled configuration relative to the proximal end, the slideable cannula further comprising a trocar having a proximal end, a distal end, and a lumen shaped to receive the elongate tubular member;
inserting the elongate tubular member into the lumen of the trocar, the trocar maintaining the tubular member in a substantially linear configuration;
inserting the trocar through an incision in an artery; and
advancing the distal end of the tubular member beyond the distal end of the trocar into the artery, wherein the distal end of the tubular member regains its preformed angle configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method for cannulating, an artery, comprising the steps of:
-
providing a slideable cannula comprising an elongate tubular member having a proximal end, a distal end, and a lumen therebetween, the distal end having a corrugated region and a preformed angled configuration relative to the proximal end, the slideable cannula further comprising a trocar having a proximal end, a distal end, and a lumen shaped to receive the elongate tubular member;
inserting the elongate tubular member into the ILIIImCIn of the trocar, the trocar maintaining the tubular member in a substantially linear configuration;
inserting the trocar into the aorta; and
advancing the distal end of the tubular member beyond the distal end of the trocar into the aorta, wherein the distal end of the tubular member regains its preformed angle configuration. - View Dependent Claims (16, 17, 18, 19)
-
Specification