Acoustic window for imaging and/or treatment of brain tissue
AssigneeCarthera
InventorsGuillaume Bouchoux, Guillaume Godefroy
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Abstract
The present invention relates to an acoustic window (1) suitable for implantation at an opening in a patient's skull (4), said acoustic window (1) being intended to cooperate with an external ultrasound probe (2) for the emission of ultrasound waves through the acoustic window (1), remarkable in that the acoustic window comprises a plate (11) including a plurality of through-holes (12), the distance (P) of the through-holes (12) being less than twice the wavelength of the ultrasound waves emitted by the external ultrasound probe (2).
Claims35
An acoustic window configured to be implanted at an opening in a patient's skull, said acoustic window cooperating with an external ultrasound probe for the emission of ultrasound waves through the acoustic window,
- wherein the acoustic window comprises:
- a plate whose stiffness is configured to satisfy a minimum deformation criterion which is that a force of 100 Newtons applied to the center of the plate must generate a deformation of less than 5 millimeters, and
- through-holes within the plate,
- wherein the plate and the through-holes satisfy the following criteria to allow the transmission of ultrasound waves at angles greater than 20° relative to an angle of incidence normal to the plate;
- a distance P between two adjacent through-holes is less than five times the wavelength of the ultrasound waves emitted by the external ultrasound probe, and
- a surface area covered by the through-holes is greater than or equal to 50% of the total surface area of the plate.
A surgical implant set comprising a package, wherein the implant set comprises a window contained in the package, and instructions for use of the window as an acoustic window configured to be implanted at an opening in a patient's skull, said acoustic window cooperating with an external ultrasound probe for the emission of ultrasound waves through the acoustic window, wherein the acoustic window comprises:
- a plate whose stiffness is configured to satisfy a minimum deformation criterion which is that a force of 100 Newtons applied to the center of the plate must generate a deformation of less than 5 millimeters, and
- through-holes within the plate,
- wherein the plate and the through-holes satisfy the following criteria to allow the transmission of ultrasound waves at angles greater than 20° relative to an angle of incidence normal to the plate;
- a distance P between two adjacent through-holes is less than five times the wavelength of the ultrasound waves emitted by the external ultrasound probe, and
- a surface area covered by the through-holes is greater than or equal to 50% of the total surface area of the plate.
A system for imaging and/or treating brain tissue, the system including an ultrasound-wave-generating probe, wherein the system further comprises an acoustic window configured to be implanted at an opening in a patient's skull, said acoustic window cooperating with the ultrasound-wave-generating probe for the emission of ultrasound waves through the acoustic window, wherein the acoustic window comprises:
- a plate whose stiffness is configured to satisfy a minimum deformation criterion which is that a force of 100 Newtons applied to the center of the plate must generate a deformation of less than 5 millimeters, and
- through-holes within the plate,
- wherein the plate and the through-holes satisfy the following criteria to allow the transmission of ultrasound waves at angles greater than 20° relative to an angle of incidence normal to the plate;
- a distance P between two adjacent through-holes is less than five times the wavelength of the ultrasound waves emitted by the ultrasound-wave-generating probe,
- a surface area covered by the through-holes is greater than or equal to 50% of the total surface area of the plate.
Dependencies are inferred from the claim text.