A thrombectomy catheter device having an improved hemostasis valve which
is self-sealing and which functions as a one-way valve. The self-sealing
hemostasis valve can be factory preset to automatically seal with or
without the inclusion of a guidewire at a certain desired pressure or
allowable leakage. Such sealing is automatic without the need to manually
manipulate a hemostasis nut to obtain hemostasis. The thrombectomy
catheter device can, without hemostasis nut adjustment, be positioned
along and about a guidewire while yet maintaining suitable pressure for
sustaining hemostasis at a preferred level. Certain embodiments of the
thrombectomy catheter device having a self-sealing hemostasis valve
include an adjustable hemostasis nut which can be manually tightened to
restrict flow or guidewire movement or loosened to reduce friction on the
guidewire and allow fluid to flow out if desired. An introducer
facilitates free passage of a guidewire in either direction through the
hemostasis nut and hemostasis valving and can also be incorporated to
purge internal air or fluids.