Vascular dilating device

A vascular dilating device comprising,

• a tubular barrel means defining a reservoir adapted to contain a supply of actuating fluid,
• said barrel having an front opening end and a rear end,
• a plunger having a piston connected thereto slidably mounted in said tubular barrel, said piston being in fluid sealing relationship with said barrel, and said plunger extending through said rear end of said barrel,
• a unidirectional valve means connected to said front opening end, and said unidirectional valve means having an inlet and an outlet, and
• said inlet being connected with the front opening end of said tubular barrel,
• a balloon catheter connected with said outlet,
• means defining a bypass to connect said balloon catheter with said reservoir,
• a control valve means connected to said tubular barrel, balloon catheter and said by pass mean whereby in a first position of said control valve fluid flow is directed from said reservoir through said unidirectional valve means to said balloon catheter to inflate said balloon catheter, and in a second position of said control valve means said balloon catheter is placed in communication with said reservoir through said by pass means to deflate said balloon catheter,
• and handle means associated with said tubular barrel and said plunger,
• said handle means including a fixed handle member associated with said barrel, and a actuating handle member pivotally connected to said fixed handle member,
• said actuating handle member being disposed in engaging relationship with said plunger whereby the movement of said actuating handle member relative to said fixed handle member effects the displacement of said plunger to force said actuating fluid through the front end opening of said barrel,
• and means for normally biasing said plunger toward said moveable handle member.

A vascular dilating device comprising a housing,

• a tubular barrel disposed in said housing,
• said tubular barrel defining a reservoir adapted to contain a supply of actuating fluid,
• said tubular barrel having a front end opening and a rear opening,
• a plunger having a piston connected thereto, said piston being in fluid sealing relationship with said tubular barrel whereby said plunger and connected piston are reciprocally mounted in said tubular barrel for movement between a retracted and protracted position,
• said plunger extending beyond the rear end of said tubular barrel,
• a valve assembly connected in communication with said front opening of said tubular barrel,
• said valve assembly including a valve body,
• a valve chamber formed in said valve body, said valve chamber having a fluid outlet,
• a passageway disposed in said valve body connecting said front end opening in communication with said valve chamber,
• a bore extending transversely of said passageway,
• a rotary control valve rotatably mounted in said bore,
• a by-pass interconnecting said valve chamber with said bore,
• a valve seat circumscribing said passageway adjacent said valve chamber,
• a balloon catheter connected to the outlet of said valve chamber,
• and a unidirectional valve connected to said valve body and engaging said valve seat for valving said passageway whereby fluid can flow therethrough for inflating the balloon catheter only,
• said rotary control valve having a first passway for directing fluid flow from said reservoir to said valve chamber in a first position for inflating said balloon catheter, and said rotary control valve having a second passway for connecting said balloon catheter to said reservoir in a second position for deflating said balloon catheter,
• and said housing including a first handle member connected thereto,
• a movable actuating handle member pivotally connected relative to said first handle member,
• means for drivingly connecting said movable actuating handle member to said plunger whereby the operation of said movable actuating handle member effects incremental displacement of said plunger and connected piston relative to said reservoir.

A vascular dilating device comprising,

• an actuating means including a reservoir means for containing a supply of actuating fluid,
• a piston means reciprocally mounted in said reservoir means,
• a balloon catheter connected to said reservoir means,
• a control valve connected between said reservoir means and said balloon catheter,
• a by-pass means connected between said reservoir means and said balloon catheter whereby in one position of said control valve, said reservoir means is disposed in communication with said balloon catheter for inflating said balloon catheter, and in a second position of said control valve, the balloon catheter is connected in communication with said by-pass means to deflate said balloon catheter, and
• a unidirectional valve means operatively associated with said control valve for maintaining the pressure of the fluid acting on said balloon catheter during inflation of said balloon catheter independently of said actuating means when said control valve is in said one position.