# US 10,245,006 B2 · Composition for acoustic-wave probe, and silicone resin for acoustic-wave probe, acoustic-wave probe and ultrasonic probe using the same, as well as device for measuring acoustic wave, ultrasonic diagnosis device, device for measuring photo acoustic wave and ultrasonic endoscope > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,006 B2 - Document ID: US10245006B2 - Status: Granted - Kind: B2 - Application number: 14/832,383 - Filed: 2015-08-21 - Published: 2016-02-25 - Granted: 2019-04-02 - Earliest claimed: 2014-08-22 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Yoshihiro Nakai; Atsushi Osawa - Web page: https://patentgrep.com/patent/US10245006B2 ## CPC - A61B 8/4494: {characterised by the arrangement of the transducer elements} - A61B 5/0095: {by applying light and detecting acoustic waves, i.e. photoacoustic measurements} - A61B 8/4272: {involving the acoustic interface between the transducer and the tissue} - A61B 8/4444: {related to the probe} - C08K 3/36: Silica - C08L 83/04: Polysiloxanes - C08L 83/14: in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms (C08L83/10 takes precedence) - A61B 8/12: in body cavities or body tracts, e.g. by using catheters - C08G 77/12: containing silicon bound to hydrogen - C08G 77/20: containing silicon bound to unsaturated aliphatic groups - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ## Abstract A composition for an acoustic-wave probe, containing a polysiloxane mixture, in which the polysiloxane mixture contains: a polysiloxane having a vinyl group; a polysiloxane having at least two Si—H groups in the molecular chain thereof; and silica particles having an average primary particle size of less than 12 nm. ## Claims ### Claim 1 An acoustic-wave probe, comprising at least one selected from the group consisting of an acoustic lens and an acoustic matching layer, which comprise a silicone resin for an acoustic-wave probe, in which a composition for an acoustic-wave probe is hardened, the composition for an acoustic-wave probe comprising a polysiloxane mixture, and wherein the polysiloxane mixture comprises: a polysiloxane having a vinyl group; a polysiloxane having at least two Si—H groups in the molecular chain thereof; and silica particles having an average primary particle size of less than 12 nm. ### Claim 2 (depends on 1) A device for measuring an acoustic wave, comprising the acoustic-wave probe according to claim 1. ### Claim 3 (depends on 1) An ultrasonic diagnosis device, comprising the acoustic-wave probe according to claim 1. ### Claim 4 (depends on 1) The acoustic-wave probe according to claim 1, wherein the polysiloxane mixture comprises from 0.1 to 30 parts by mass of the silica particles having an average primary particle size of less than 12 nm, in a total amount of 100 parts by mass of the polysiloxane mixture. ### Claim 5 (depends on 1) The acoustic-wave probe according to claim 1 wherein the polysiloxane mixture comprises, in a total amount of 100 parts by mass thereof: from 10 to 99.4 parts by mass of the polysiloxane having a vinyl group; and from 0.5 to 90 parts by mass of the polysiloxane having at least two Si—H groups in the molecular chain thereof. ### Claim 6 (depends on 1) The acoustic-wave probe according to claim 1, wherein the silica particles having an average primary particle size of less than 12 nm has a surface treated with a silane compound. ### Claim 7 (depends on 1) The acoustic-wave probe according to claim 1, wherein the silica particles having an average primary particle size of less than 12 nm has a surface treated with a trimethylsilylation agent. ### Claim 8 (depends on 1) The acoustic-wave probe according to claim 1, wherein the polysiloxane having a vinyl group comprises a phenyl group. ### Claim 9 (depends on 1) The acoustic-wave probe according to claim 1, wherein the polysiloxane having a vinyl group has a mass-average molecular weight from 10,000 to 200,000. ### Claim 10 (depends on 1) The acoustic-wave probe according to claim 1, wherein the polysiloxane having a vinyl group has a mass-average molecular weight from 30,000 to 150,000. ### Claim 11 (depends on 1) The acoustic-wave probe according to claim 1, wherein the polysiloxane having at least two Si—H groups in the molecular chain thereof comprises a phenyl group. ### Claim 12 (depends on 1) The acoustic-wave probe according to claim 1, wherein the composition for an acoustic-wave probe comprises from 0.00001 to 0.01 parts by mass of platinum or a platinum compound, with respect to 100 parts by mass of the polysiloxane mixture. ### Claim 13 An ultrasonic probe, comprising: a capacitive micromachined ultrasonic transducer as an ultrasonic transducer array; and an acoustic lens comprising a silicone resin for an acoustic-wave probe, in which a composition for an acoustic-wave probe is hardened, the composition for an acoustic-wave probe comprising a polysiloxane mixture, and wherein the polysiloxane mixture comprises: a polysiloxane having a vinyl group; a polysiloxane having at least two Si—H groups in the molecular chain thereof; and silica particles having an average primary particle size of less than 12 nm. ### Claim 14 A device for measuring a photo acoustic wave, comprising an acoustic lens comprising a silicone resin for an acoustic-wave probe, in which a composition for an acoustic-wave probe is hardened, the composition for an acoustic-wave probe comprising a polysiloxane mixture, and wherein the polysiloxane mixture comprises: a polysiloxane having a vinyl group; a polysiloxane having at least two Si—H groups in the molecular chain thereof; and silica particles having an average primary particle size of less than 12 nm. ### Claim 15 An ultrasonic endoscope, comprising an acoustic lens comprising the silicone resin for an acoustic-wave probe, in which a composition for an acoustic-wave probe is hardened, the composition for an acoustic-wave probe comprising a polysiloxane mixture, and wherein the polysiloxane mixture comprises: a polysiloxane having a vinyl group; a polysiloxane having at least two Si—H groups in the molecular chain thereof; and silica particles having an average primary particle size of less than 12 nm.