Patent ID: 9044302
Filing Date: 2015-06-02
Classification: A61B,A61F

Abstract:
1. A patient interface system for ophthalmic intervention on an eye of a patient, comprising: a. a housing; b. an optical lens coupled to the housing and having a focal axis; c. an eye surface engagement assembly coupled to the housing and comprising an inner seal having an inner seal diameter and being configured to circumferentially engage the eye, an outer seal having an outer seal diameter and being configured to circumferentially engage the eye, a vacuum chamber being defined by the eye surface engagement assembly and between the inner and outer seals, and a tissue migration bolster structure configured to be positioned circumferentially between the inner and outer circumferential seals and at least partially within the vacuum chamber to prevent migration of tissue of the eye toward the eye surface engagement assembly when a vacuum load is applied within the vacuum chamber to cause vacuum engagement of the inner and outer seals against the eye, wherein the tissue migration bolster structure is a separate element from those that define the vacuum chamber.