US 12,007,600 B2
Polymer optical fibre for active implantable medical devices (AIMD) and AIMD using same
Aurélie De Cock De Rameyen, Mont-Saint-Guibert (BE); Pascal Doguet, Mont-Saint-Guibert (BE); Vincent Callegari, Mont-Saint-Guibert (BE); and Aurore Nieuwenhuys, Mont-Saint-Guibert (BE)
Assigned to Synergia Medical, Mont-Saint-Guibert (BE)
Appl. No. 17/635,062
Filed by Synergia Medical, Mont-Saint-Guibert (BE)
PCT Filed Aug. 14, 2019, PCT No. PCT/EP2019/071803
§ 371(c)(1), (2) Date Feb. 14, 2022,
PCT Pub. No. WO2021/028034, PCT Pub. Date Feb. 18, 2021.
Prior Publication US 2022/0291442 A1, Sep. 15, 2022
Int. Cl. G02B 6/02 (2006.01); C08L 23/08 (2006.01); C08L 27/14 (2006.01); C08L 27/18 (2006.01); C08L 27/20 (2006.01); G02B 1/04 (2006.01)
CPC G02B 6/02033 (2013.01) [C08L 23/0823 (2013.01); C08L 27/14 (2013.01); C08L 27/18 (2013.01); C08L 27/20 (2013.01); G02B 1/046 (2013.01); G02B 1/048 (2013.01); G02B 6/02047 (2013.01); C08L 2203/02 (2013.01); C08L 2203/202 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A polymer optical fibre (POF) (30) for transmitting light of a wavelength, λi, between two separate elements of an active implantable medical device (AIMD), wherein the wavelength, λi, is between 380 and 1800 nm and wherein said POF is a multimode optical fibre comprising a first end and a second end, and comprises:
(a) a core (31) which is cylindrical and made of a cyclic olefin polymer (COP) or copolymer (COC), having a core refractive index n_core at the wavelength, λi, the core being enclosed in
(b) a cladding (32) which has a cladding refractive index n_clad<n_core at the wavelength and which is made of a cladding copolymer comprising monomers of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride, the cladding being itself enclosed in
(c) a coating (33) which is made of a coating polymer comprising one of the monomers of the cladding copolymer, and wherein the coating polymer has a higher stiffness than the cladding copolymer,
wherein the POF has a numerical aperture, NA, at the wavelength, λi, of at least 0.5, wherein NA=((n_core)2-(n_clad)2)1/2.