Optical trocar visualization system and apparatus
First Claim
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.
3 Assignments
0 Petitions
Accused Products
Abstract
A seal assembly including a septum seal, a lower seal support, an upper seal support and a return spring is disclosed. The septum seal includes an orifice and a plurality of apertures. The lower seal support includes an engagement surface configured to engage a portion of the septum seal. The upper seal support includes a plurality of fingers, wherein each of the plurality of fingers is configured to extend through a corresponding aperture of the septum seal. The return spring includes a collar portion and a plurality of spokes extending radially outward from the collar portion. At least a portion of the return spring may be sandwiched between the lower seal support and the upper seal support. The plurality of spokes is configured to bias the seal assembly toward a radial center of a housing.
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Citations
18 Claims
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1. A seal assembly for use with a surgical instrument, the seal assembly comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cannula assembly comprising:
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a housing; an elongated portion extending distally from the housing and defining a longitudinal axis; and a seal assembly disposed at least partially within the housing, the seal assembly including; a 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 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, the return spring being configured to be received at least partially within a portion of the lower seal support; wherein the plurality of spokes is configured to bias the seal assembly toward a radial center of the housing and the housing is configured to limit movement of the septum seal along the longitudinal axis 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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification