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Optical trocar visualization system and apparatus

  • US 10,022,149 B2
  • Filed: 09/26/2013
  • Issued: 07/17/2018
  • Est. Priority Date: 09/28/2012
  • Status: Active Grant
First Claim
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1. A seal assembly for use with a surgical instrument, the seal assembly comprising:

  • a housing;

    a septum seal disposed within the housing, the septum seal including an orifice, a flat surface including a plurality of apertures, an annular wall extending from the flat surface, and a peripheral seal extending from the annular wall, the orifice being configured to provide a seal about a portion of an instrument inserted therethrough;

    a lower seal support including an engagement surface, the engagement surface being configured to engage a portion of the septum seal, the engagement surface including a plurality of apertures extending therethrough;

    an upper seal support including a plurality of fingers, wherein each finger of the plurality of fingers is configured to extend through a corresponding aperture of the plurality of apertures of the septum seal; and

    a return spring including a collar portion and a plurality of spokes, the plurality of spokes extending radially outward from the collar portion, at least a portion of the return spring being sandwiched between the lower seal support and the upper seal support;

    wherein the plurality of spokes is configured to bias the septum seal toward a radial center of the housing and the housing is configured to limit angulation of the septum seal with respect to the housing, and wherein the peripheral seal of the septum seal is configured to extend proximally of and to contact a proximal edge of the collar portion of the return spring.

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