Sterilizable syringe
First Claim
1. In a syringe having a handle with a nozzle at its proximal end portion, a normally-closed flow control valve located in said handle for controlling flow through the nozzle, a distal end portion, and means providing a fluid flow conduit extending in said handle between said valve and said distal end, the improvement comprising:
- coupling means for releasably coupling the distal end portion of said handle to an end portion of a flexible hose connected to a source of fluid flowable through said flow conduit means in said handle with respect to said nozzle, said coupling means including a first coupling component mountable on said hose end portion and a second coupling component carried by said distal end portion of said handle, said first and second coupling components being telescopically matingly engageable and disengageable with one another and having cooperating valving and actuator means operable automatically upon engagement to provide fluid communication between said hose and said handle when said coupling components are interconnected and upon axial disengagement to block said fluid communication, said actuator being carried by said syringe, whereby upon disconnection any fluid remaining in the conduct can be drained by opening the flow control valve to permit drainage.
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Accused Products
Abstract
A sterilizable medical/dental syringe having a handle with a nozzle at one end is provided with means for releasably coupling the other end of the handle to a flexible supply hoses providing compressible gases and/or noncompressible liquids. When disconnected from the flexible hose supply line, automatic sealing valves prevent the contents of the supply line form escaping. A readily repairable flow control valve for the nozzle is also disclosed.
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Citations
18 Claims
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1. In a syringe having a handle with a nozzle at its proximal end portion, a normally-closed flow control valve located in said handle for controlling flow through the nozzle, a distal end portion, and means providing a fluid flow conduit extending in said handle between said valve and said distal end, the improvement comprising:
- coupling means for releasably coupling the distal end portion of said handle to an end portion of a flexible hose connected to a source of fluid flowable through said flow conduit means in said handle with respect to said nozzle, said coupling means including a first coupling component mountable on said hose end portion and a second coupling component carried by said distal end portion of said handle, said first and second coupling components being telescopically matingly engageable and disengageable with one another and having cooperating valving and actuator means operable automatically upon engagement to provide fluid communication between said hose and said handle when said coupling components are interconnected and upon axial disengagement to block said fluid communication, said actuator being carried by said syringe, whereby upon disconnection any fluid remaining in the conduct can be drained by opening the flow control valve to permit drainage.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A hand held sterilizable implement for flowing fluid relative to a body cavity, comprising:
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a handle means having a proximal end with a nozzle and a distal end, a normally-closed control valve mounted in said handle for controlling fluid flow relative to said body cavity, means in said handle means providing a fluid conduit extending between said flow control valve and said distal end, coupling means for releasably coupling the distal end portion of the fluid conduit in the handle to an end portion of a flexible hose, said coupling means including a first coupling component mountable on said hose end portion and a second coupling component carried by said distal end portion of said handle, said first and second coupling components being telescopically matingly engageable and disengageable with one another and having cooperating valving and actuator means operable automatically upon axial engagement to provide sealed fluid communication between said hose and said conduit in said handle when said coupling elements are locked together and upon axial disengagement to block said fluid communication, said valving means being carried by said hose and said actuator means including the distal end portion of said fluid conduit, whereby the handle means can be readily disconnected from the hose for sterilization and any fluid remaining in the conduit after disconnection can be drained prior to sterilization upon opening of said flow control valve. - View Dependent Claims (17, 18)
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Specification