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1. (WO2019063508) CAPUCHON POUR SONDE À ULTRASONS
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

Claims

1 . A flexible cover for an ultrasound device, the cover comprising polyurethane, wherein the cover is shaped as a sheath having a closed end, said shape is made by dip molding, and wherein the ultrasound attenuation is at least below

65% or 60% of the attenuation of latex, more preferably below at least 55%, 50%, 45%, 40%, 35%, or 30% below the attenuation of latex.

The cover according to claim 1 , wherein the ultrasound attenuation of the cover is below 12 dB at 20 MHz, more preferably below 10 dB, and most preferably below 8 dB, and/or

wherein the ultrasound attenuation is below 10 dB at 18 MHz, more preferably below 8 dB, and most preferably below 7 dB, and/or

wherein the ultrasound attenuation is below 8 dB at 16 MHz, more preferably below 7 dB, and most preferably below 6 dB, and/or

wherein the ultrasound attenuation is below 6 dB at 14 MHz, more preferably below 5.5 dB, and most preferably below 5 dB, and/or

wherein the ultrasound attenuation is below 5 dB at 12 MHz, more preferably below 5.5 dB, and most preferably below 4 dB.

The cover according to any of the preceding claims, wherein the tensile set is equal to or below ca. 6%, more preferably equal to or below 5, 4, 3, 2, or 1 %.

The cover according to any of the preceding claims, wherein the cover is seamless.

5. The cover according to any of the preceding claims further comprising talc.

6. The cover according to claim 5 comprising below 10 wt% talc, more preferably below 8, 6, 4, 2 wt% talc, and most preferably below 1 wt% talc.

7. The cover according to any of the preceding claims, wherein the cover material is ISO 10993 approved.

8. The cover according to any of the preceding claims, wherein the dip molding includes one or more coagulation agent(s).

9. The cover according to any of the preceding claims, wherein the dip molding includes curing at a temperature below 100 °C, more preferably below 90, 80, 70 °C.

10. The cover according to any of the preceding claims, wherein the dip molding is carried out in an aqueous dispersion.

1 1 . The cover according to claim 10, wherein the aqueous dispersion comprises particles of polyurethane that is ISO 10993 approved.

12. The cover according to any of claims 10-1 1 , wherein the solid load of the

aqueous dispersion is below 70 wt%, more preferably below 60, 50, 40 wt%.

13. The cover according to any of the preceding claims having an elongation at break between 600-1000%, more preferably between 700-800%.

14. The cover according to any of the preceding claims having a thickness between 20-220 microns, more preferably between 70-200 microns, and most preferably between 170-200 microns.

15. The cover according to any of the preceding claims, wherein the thickness variation is equal to or below 30 microns, more preferably equal to or below 20 microns, and most preferably below 10 or 7 microns.

16. The cover according to any of the preceding claims shaped as a tube with a closed end.

17. The cover according to claim 16, wherein the tube is a cone shaped tube.

18. The cover according to any of claims 16-17, wherein the diameter of the tube is between 0.1 -10 cm, more preferably between 0.5-5 cm, and most preferably between 0.6-3 cm.

19. The cover according to any of the preceding claims, wherein the length of the cover is above 30 cm, more preferably above 40, 50, 60, 70, 80, 90 cm, and most preferably above 100 cm.

20. A method of producing an ultrasound device cover, comprising the steps of: providing one or more form(s), which are optionally pre-heated,

dipping the form(s) into an aqueous solution comprising one or more coagulant agents, whereby coagulant agent is attached to the surface of the form(s),

dipping the coagulant treated form(s) into an aqueous polyurethane dispersion, whereby a liquid film of polyurethane is coating the surface of the form(s),

drying the coated form(s) at a temperature below 100 °C, whereby a coating of polyurethane is formed,

detaching the polyurethane coating from the form,

whereby a cover with a closed end is obtained.

21 . The method according to claim 20, configured to produce the cover according to any of claims 1 - 19.

22. The cover according to any of claims 1 -19, be made by the method according to claim 20.

23. A kit of parts comprising the cover according to any of claims 1 -19, an

ultrasound gel, and optionally a bite guard.

24. Use of the cover according to any of claims 1 -19 for ultrasound imaging,

preferably within the frequency range between 2 to 20 MHz, more preferably between 6 to 20 MHz, and most preferably between 8 to 20 MHz, or use of the cover as a cover for hands and/or a glove.