Dilator - Introducer locking hub and sheath valve apparatus

Details Dilator - Introducer locking hub and sheath valve apparatus Dilator - Introducer locking hub and sheath valve apparatus

1992-08-04

1994-04-19

Graysay, Tamara L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604169, 606191, A61M 2900

Patent

active

053041429

ABSTRACT:
A dilator is axially movable to have its tubular member movably extended through the tubular portion of an introducer with the dilator hub abuttable against the tubular portion proximal edge. A locking finger mounted to the introducer tab (or handle) is radially extendable into a hub recess to lockingly retain the dilator and introducer in a coupled relationship to prevent accidental axial separation. The recess is formed by the hub main body and a radially extending flange to open radially outwardly. In one embodiment, the introducer tab is of a flexibility for being manually bent to move the locking finger out of the recess to permit axial separation while in a second embodiment, a flange notch is provided for the locking finger to relatively move axially therethrough when the dilator and introducer are relatively rotated from a position where the locking finger abuts against the flange. In the third embodiment, a slider is axially movable on the tab between a locking finger locked coupling position, a valving position blocking fluid flow through the tubular portion when the dilator and introducer are axially separated, and a valve open position permitting axial separation of the dilator and the introducer; while a fourth embodiment has a slider and an introducer notched flange.

REFERENCES:
patent: 4935010 (1990-06-01), Cox et al.
patent: 5186712 (1993-02-01), Kelso et al.
patent: 5190050 (1993-03-01), Nitzsche

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