MEDICAL DELIVERY SYSTEMS AND APPARATUS

摘要

A catheter proximal section is preferably formed from a relatively soft part and a relatively rigid part, and includes a proximal terminal end that defines a perimeter of an opening into a lumen of the catheter. The proximal section may further include a feature for interlocking engagement with an accessory tool. An inner surface of each of the relatively soft and rigid parts may be located opposite one another, on either side of the catheter lumen. The relatively soft and rigid parts may be included in a sealing assembly that further includes an attachment feature for removable connection of the assembly to the proximal section catheter.

主权项

1. A sealing assembly for a catheter comprising:
a lumen providing passage into a main lumen of the catheter when the sealing assembly is connected to the catheter, the lumen of the sealing assembly including a proximal opening, a proximal port portion and a seal zone portion, the proximal port portion extending from the proximal opening distally to the seal zone portion, and the seal zone portion having a diameter that is smaller than that of the proximal opening; a proximal terminal end defining a perimeter of the proximal opening of the lumen; a relatively soft first part including a relatively soft inner surface, the relatively soft inner surface defining a first portion of a perimeter of the proximal port potion of the lumen of the sealing assembly; and a relatively rigid second part including an attachment feature, for removably connecting the sealing assembly to a hub of the catheter, and a relatively hard inner surface, the relatively hard inner surface defining a second portion of the perimeter of the proximal port portion of the lumen of the sealing assembly; wherein the first and second portions of the perimeter of the proximal port portion extend along a length of the proximal port portion and are generally located on opposite sides of the lumen of the sealing assembly.