Patent ID: 11957862
Assignee: TITAN MEDICAL INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An apparatus for providing instrument access through a gel pad of a surgical access device disposed to seal an opening to a body cavity of a patient, the apparatus comprising:
a stem including a bore extending therethrough, the stem being of a sufficient length such that when the stem is inserted through the gel pad, a distal end of the stem protrudes beyond an inner surface of the gel pad, the bore being sized to permit an instrument to be inserted through the bore and through the opening into the body cavity, the stem further including a flanged opening to the bore that remains external to an outer surface of the gel pad and limits the insertion of the stem through the gel pad;
a displaceable seal disposed within the bore below the flanged opening, the displaceable seal configured to seal the bore prior to insertion of the instrument and to displace to permit insertion of the instrument while maintaining the seal; and
an annular seal comprising a complaint material and being located proximal to the displaceable seal, the annular seal bearing against an outer surface of the instrument to prevent escape of an insufflation gas after insertion of the instrument through the seal,
wherein the displaceable seal comprises a cross-slit valve that includes a plurality of flaps and is positioned to prevent the insufflation gas from escaping prior to insertion of the instrument through the seal formed by the plurality of flaps of the cross-slit valve,
wherein the plurality of flaps of the cross-slit valve deform to accommodate the instrument after insertion of the instrument through the displaceable seal while still preventing the insufflation gas from escaping, and
wherein the stem comprises:
a first stem portion being of a length sufficient to extend at least through the gel pad up to the opening in the body cavity; and
a plurality of second stem portions with different lengths, wherein an appropriate second stem portion is coupled to extend the first stem portion by a length sufficient to cause the distal end of the stem to enter the body cavity when the stem is inserted through the gel pad of the surgical access device.