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Suction device for surgical instruments

  • US 10,022,479 B2
  • Filed: 11/18/2015
  • Issued: 07/17/2018
  • Est. Priority Date: 10/24/2014
  • Status: Active Grant
First Claim
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1. An elongate surgical device configured to couple with an electrosurgical instrument, provide suction of material from a surgical field, and enhance the suctioning of surgical smoke from the surgical field, the elongate surgical device comprising:

  • a retainer configured to couple the elongate surgical device with the electrosurgical instrument;

    an input port configured to receive a suction flow from the surgical field and positioned at a distal end of the elongate surgical device;

    a plurality of intake ports configured to receive surgical smoke from the surgical field and positioned proximally to the input port on a surface of the elongate surgical device;

    a longitudinal channel having;

    a first flared segment into which the input port opens so that the first flared segment receives the suction flow from the input port when suction is generated within the longitudinal channel, the first flared segment having its smallest diameter at a location where the first flared segment has the least amount of outward flaring;

    a second flared segment into which a suction source opens so that the suction source generates suction within the longitudinal channel, the second flared segment having its smallest diameter at a location where the second flared segment has the least amount of outward flaring; and

    a narrow segment positioned in between the first flared segment and the second flared segment, wherein a diameter of the narrow segment is less than or equal to the smallest diameter of the first flared segment and the smallest diameter of the second flared segment, and into which wherein the plurality of intake ports open into the narrow segment so that when suction is generated within the longitudinal channel by the suction source, a Venturi effect is generated at the narrow segment so that the Venturi effect enhances a flow of the surgical smoke into the longitudinal channel.

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