Cannula with floating clamping member

摘要

A cannula has a longitudinal base member having a first clamping end and a longitudinal arm member pivotally attached to the longitudinal base member and having a second clamping end, the cannula being in a closed position when the first and second clamping ends are brought together. A first clamp member is located at the first clamping end and has a first passage. A second clamp member is rotatably attached to the arm member at the second clamping end and has a second passage. The first and second passages form a combined passage when the clamp is in the closed position. The cannula may have a first locking member positioned on the arm member and a second locking member positioned on the base member. The first and second locking members interact with each other to lock the cannula in the closed position.

主权项

1. A method of cannulating a blood vessel comprising:
inserting the blood vessel through an opening within a first clamp member; and clamping a portion of the blood vessel between a first clamp surface of the first clamp member and a second clamp surface of a second clamp member, wherein:
the first clamp surface applies a first force on the clamped portion of the blood vessel,the second clamp surface applies a second force on the clamped portion of the blood vessel, andthe second clamp surface is configured to pivot relative to the first clamp surface such that a direction in which the second force is applied to the clamped portion of the blood vessel is able to change relative to a direction in which the first force is applied to the clamped portion of the blood vessel and that both the first clamp surface and the second clamp surface are configured to contact the blood vessel along each of their entire lengths when the second clamp surface is pivoted relative to the first clamp surface.