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Adjustable suction device for medical use

  • US 4,487,600 A
  • Filed: 08/10/1983
  • Issued: 12/11/1984
  • Est. Priority Date: 11/09/1981
  • Status: Expired due to Fees
First Claim
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1. An adjustable, disposable suction device comprising a hollow handle, an elongated substantially rigid outer tube connected at one end to the handle, the rigid tube having a plurality of longitudinally spaced radial apertures adjacent its free end, an imperforate flexible inner tube positioned in the rigid tube, there being clearance between the flexible and rigid tubes to permit the flow of fluid therebetween, the flexible tube being substantially coextensive with the rigid tube and being movable longitudinally within the latter so that it is operable to block all of the radial apertures in the rigid tube or selectively open some or all of them, a hollow slide member mounted in the handle for longitudinal movement relative thereto, the slide member being connected at one end of the flexible tube with the interiors of the tube and member being in communication with one another, coupling means at the other end of the hollow slide member for connecting its interior with a vacuum source, and means on the slide member for manually moving it back and forth and thereby move the flexible tube to open or close the radial apertures in the rigid tube, the free end of the rigid outer tube having a reduced diameter portion into which the free end of the flexible inner tube can be moved, the inner tube being received in the outer tube reduced diameter portion with a close sliding fit whereby the inner tube operates to block the radial apertures in the outer tube when its free end is positioned in the reduced diameter portion of the outer tube.

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