# US 2014/0197558 A1 · Method of Ring-Shaped Structure Placement in an Eye-Mountable Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197558 A1 - Document ID: US20140197558A1 - Status: Published application - Kind: A1 - Application number: 13/743,443 - Filed: 2013-01-17 - Published: 2014-07-17 - Earliest claimed: 2013-01-17 - Assignees: Google Inc. - Applicants: Google Inc. - Inventors: Jeffrey George Linhardt; Harvey Ho - Web page: https://patentgrep.com/patent/US20140197558A1 ## CPC - B29D 11/00038: {Production of contact lenses} - A61B 5/14507: {specially adapted for measuring characteristics of body fluids other than blood (devices for taking samples of body liquids A61B10/0045)} - A61B 5/14532: {for measuring glucose, e.g. by tissue impedance measurement} - A61B 5/6821: {Eye} - B29D 11/00807: {Producing lenses combined with electronics, e.g. chips} - G02C 7/04: Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00) - B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) ## Abstract Example eye-mountable devices and methods for fabricating eye-mountable devices are described. A method may include applying a first amount of polymerizable material to a ring-shaped structure, where the ring-shaped structure comprises at least one sensor configured to detect an analyte. The method also may include positioning the ring-shaped structure with the first amount of polymerizable material applied thereto in a mold, where the mold is configured to form an eye-mountable device. Further, the method may include applying pressure on the ring-shaped structure in the mold while curing the first amount of polymerizable material. Still further, the method may include adding a second amount of polymerizable material to the mold with the ring-shaped structure therein, and curing the second amount of polymerizable material to form an over-molded polymer layer such that the ring-shaped structure is at least partially enclosed in the eye-mountable device. ## Claims ### Claim 1 A method comprising: applying a first amount of polymerizable material to a ring-shaped structure, wherein the ring-shaped structure comprises at least one sensor; positioning the ring-shaped structure with the first amount of polymerizable material applied thereto in a mold, wherein the mold is configured to form an eye-mountable device; applying pressure on the ring-shaped structure in the mold while curing the first amount of polymerizable material; adding a second amount of polymerizable material to the mold with the ring-shaped structure therein; and curing the second amount of polymerizable material to form an over-molded polymer layer such that the ring-shaped structure is at least partially enclosed in the eye-mountable device. ### Claim 2 (depends on 1) The method of claim 1, wherein positioning the ring-shaped shaped structure with the first amount of polymerizable material applied thereto in the mold comprises positioning the ring-shaped structure with the first amount of polymerizable material applied thereto on a previously-formed polymer layer in the mold. ### Claim 3 (depends on 2) The method of claim 2, wherein the previously-formed polymer layer defines an anterior side of the eye-mountable device and the over-molded polymer layer defines a posterior side of the eye-mountable device. ### Claim 4 (depends on 2) The method of claim 2, wherein the previously-formed polymer layer is in a partially-cured state. ### Claim 5 (depends on 2) The method of claim 2, wherein the previously-formed polymer layer and the over-molded polymer layer comprise a transparent material. ### Claim 6 (depends on 1) The method of claim 1, wherein applying the first amount of polymerizable material to the ring-shaped structure comprises placing the polymerizable material at one or more discrete locations on the ring-shaped structure, and wherein applying pressure on the ring-shaped structure comprises applying pressure at the one or more discrete locations. ### Claim 7 (depends on 1) The method of claim 1, wherein applying pressure on the ring-shaped structure comprises applying pressure on the entire ring-shaped structure. ### Claim 8 (depends on 1) The method of claim 1, wherein applying pressure on the ring-shaped structure comprises applying pressure via a plunger comprising a compliant material. ### Claim 9 (depends on 1) The method of claim 1, wherein the over-molded polymer layer comprises a hydrogel material or a silicone elastomer. ### Claim 10 A method comprising: applying a first amount of polymerizable material to a ring-shaped structure, wherein the ring-shaped structure comprises at least one sensor; positioning the ring-shaped structure with the first amount of polymerizable material applied thereto on a previously-formed polymer layer in a mold, wherein the mold is configured to form an eye-mountable device; applying, via a plunger comprising an elastic material, pressure on the ring-shaped structure in the mold; and adding a second amount of polymerizable material to the mold with the ring-shaped structure therein, and curing the second amount of polymerizable material to form an over-molded polymer layer such that the ring-shaped structure is fully enclosed in the eye-mountable device. ### Claim 11 (depends on 10) The method of claim 10, wherein the previously-formed polymer layer defines an anterior side of the eye-mountable device and the over-molded polymer layer defines a posterior side of the eye-mountable device. ### Claim 12 (depends on 10) The method of claim 10, wherein the anterior side of the eye-mountable device is configured to allow an analyte to diffuse therethrough to be detected by the sensor. ### Claim 13 (depends on 10) The method of claim 10, wherein the previously-formed polymer layer is in a partially-cured state. ### Claim 14 (depends on 10) The method of claim 10, wherein the previously-formed polymer layer and the over-molded polymer layer comprise a transparent material. ### Claim 15 (depends on 10) The method of claim 10, wherein the ring-shaped structure is more rigid than the previously-formed polymer layer and the over-molded polymer layer. ### Claim 16 (depends on 10) The method of claim 10, wherein applying the first amount of polymerizable material to the ring-shaped structure comprises placing the polymerizable material on one or more discrete locations on the ring-shaped structure, and wherein applying pressure on the ring-shaped structure comprises applying pressure at the one or more discrete locations. ### Claim 17 (depends on 10) The method of claim 10, wherein applying pressure on the ring-shaped structure comprises applying pressure on the entire ring-shaped structure. ### Claim 18 (depends on 10) The method of claim 10, wherein applying pressure on the ring-shaped structure comprises applying pressure while curing the first amount of polymerizable material. ### Claim 19 A method comprising: applying an amount of adhesive material to a ring-shaped structure, wherein the ring-shaped structure comprises at least one sensor; positioning the ring-shaped structure with the amount of adhesive material applied thereto in a mold, wherein the mold is configured to form an eye-mountable device; applying pressure on the ring-shaped structure in the mold while curing the amount of adhesive material; adding a respective amount of polymerizable material to the mold with the ring-shaped structure therein; and curing the respective amount of polymerizable material to form an over-molded polymer layer such that the ring-shaped structure is at least partially enclosed in the eye-mountable device. ### Claim 20 (depends on 19) The method of claim 19, wherein the adhesive material comprises a thermosetting polymer.