Carl Zeiss Meditec Patente

Es werden Techniken zur Bestimmung von Kontextinformation für eine geschätzte Patienten-Registrierung (85) beschrieben. Die Patienten-Registrierung kann z.B. von einem chirurgischen Navigationssystem geschätzt werden. Die Kontextinformation kann z.B. eine Unsicherheit für die Patienten-Registrierung und/oder eine alternative Schätzung für die Patienten-Registrierung angeben. Die Kontextinformation wird anhand von intraoperativen Bilddaten, die mittels eines chirurgischen Visualisierungssystems erfasst werden, bestimmt. Basierend auf der Kontextinformation können dann ein oder mehrere Komponenten, die mit einem chirurgischen Assistenzsystem assoziiert sind, angesteuert werden.

Es werden Techniken zur Bestimmung von Kontextinformation für eine geschätzte Patienten-Registrierung (85) beschrieben. Die Patienten-Registrierung kann z.B. von einem chirurgischen Navigationssystem geschätzt werden. Die Kontextinformation kann z.B. eine Unsicherheit für die Patienten-Registrierung und/oder eine alternative Schätzung für die Patienten-Registrierung angeben. Die Kontextinformation wird anhand von intraoperativen Bilddaten, die mittels eines chirurgischen Visualisierungssystems erfasst werden, bestimmt. Basierend auf der Kontextinformation können dann ein oder mehrere Komponenten, die mit einem chirurgischen Assistenzsystem assoziiert sind, angesteuert werden.

A surgical robotic system 200 is provided which comprises an eye manipulation system. The eye manipulation system may be configured for orbital manipulation of an eye of a patient. The eye manipulation system may comprise an arm 132 having at least one degree of freedom and an eye gripping device 130 mounted to a distal end of the arm. The eye gripping device may be configured to engage an eyeball 102 by exerting a grip on a fibrous surface layer of the eyeball, and the arm may be adjustable in pose to move the eye gripping device along a curved plane 131 representing a curvature of the eyeball to, when the eyeball is engaged by the eye gripping device, rotate the eyeball within an eye socket 104.

An eye gripping device 120 is provided for engaging an eyeball 102. The eye gripping device comprises a base structure that includes one or more contact elements 126. The contact elements define one or more contact surfaces arranged along a contact plane that conforms to the curvature of the ocular surface. The device further includes a plurality of needles 128 affixed to the base structure, each needle having an outer diameter of 600 µm or less, preferably 400 µm or less, and more preferably 200 µm or less. The needles protrude from the contact plane by 600 µm or less, preferably 400 µm or less, facilitating secure engagement with the ocular surface without penetrating deeply into the tissue. The device is suitable for precise eye manipulation, ensuring stability during procedures involving the eyeball 102.

An eye manipulation system is provided for orbital manipulation of an eye of a patient. The eye manipulation system may comprise an arm 132 having at least one degree of freedom and an eye gripping device 130 mounted to a distal end of the arm. The eye gripping device may be configured to engage an eyeball 102 by exerting a grip on a fibrous surface layer of the eyeball, and the arm may be adjustable in pose to move the eye gripping device along a curved plane 131 representing a curvature of the eyeball to, when the eyeball is engaged by the eye gripping device, rotate the eyeball within an eye socket 104. A surgical robotic system 200 may be provided which comprises the eye manipulation system. In such an example, the arm 132 of the eye manipulation system may be attached to a component of the surgical robotic system.

The disclosure relates to a nose cone (160) for a vibrometry measurement system. The nose cone comprises a cone body (165) having a base portion (210) and a top portion (220); the top portion (220) comprising a plurality of ports (230, 332, 334) on a top surface (225), wherein at least one light guiding element (144) is coupled to at least one of the plurality of ports (230, 332, 334). A speaker duct (336) configured to transmit an acoustic stimulus from a speaker (152); and a microphone duct (338) configured to relay an acoustic pressure to a microphone (154). The invention further relates to a vibrometry measurement system and a method for manufacturing a nose cone.

An optical system comprising a distal lens assembly defining an optical exit axis; an optical beam combining element; an image sensor; an imaging lens assembly defining an imaging beam path between the optical beam combining element and the image sensor, the distal lens assembly and the imaging lens assembly configured such that imaging light scattered by a sample residing at a distal object plane is collected by the distal lens assembly and directed onto the image sensor by the imaging lens assembly according to an optical imaging beam path; an optical coherence tomography beam delivery assembly configured to deliver, from an optical coherence tomography subsystem, an optical coherence tomography sample arm beam onto the optical beam combining element such that the optical coherence tomography sample arm beam is directed through the distal lens assembly onto the sample, thereby defining an optical coherence tomography sample arm beam path, and such that reflected optical coherence tomography light is collected by the distal lens assembly and directed to the optical coherence tomography subsystem for detection, wherein the distal lens assembly and/or the imaging lens assembly and/or the optical coherence tomography beam delivery assembly comprises a variable focal length lens configured to variably adjust a distance between the distal lens assembly and the distal object plane along the optical exit axis, wherein a focal length of the variable focal length lens is variable within a predefined focal length range.

Systems and methods are provided for performing Doppler (phase-sensitive) optical coherence tomographic vibrometry measurements involving the vibrometric response of a rigid structure to an acoustic stimulus, such that the impact of speckle noise on a calculated vibrometric measure is reduced. Detected signals are processed to determine a depth range associated with the rigid structure, and to provide sampled time-dependent phase data encoded with the vibratory response of the rigid structure during application of the acoustic stimulus. The sampled time-dependent phase profile is processed to generate a vibrometric measure characterizing the rigid structure, based on non-uniformly-weighted contributions from one or more subregions within the depth region associated with the rigid structure (and optionally one or more time windows). The contribution from each subregion may be dependent on a depth-domain intensity measure associated with the subregion, where each subregion may be sufficiently small to encompass speckle-induced spatially-dependent changes.

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A surgical robotic system 100 may be provided for use in an intraocular procedure. The surgical robotic system may comprise a movable arm part 82 for holding a surgical instrument 119. The surgical instrument may comprise a grasping device 122 for grasping a retinal surface structure 240. A processor subsystem 40 may be configured to control an actuator subsystem to control a pose of the surgical instrument during the intraocular procedure. The processor subsystem may be further configured to, when a grasping mode is activated, control the actuator subsystem to adjust the pose of the surgical instrument to position 300 the grasping device at a predetermined distance DT to the retinal surface structure, and after reaching the predetermined distance to the retinal surface structure, operate the grasping device of the surgical instrument to grasp 310 the retinal surface structure. By providing such an automated grasping mode, the risk of mis-grasps of the retinal surface structure may be reduced, and thereby the risk of retinal damage.

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The invention relates to a method for generating a first augmented image (AI1) when operating a medical visualization system (4) with a surgical microscope (10) comprising at least a first image acquisition device (5), the method comprising the steps ofa. receiving a first real image (RI1) being generated by the first image acquisition device (5) and representing an image of an examination area,b. generating a first virtual image (VI1) based on a reference data set (R) representing three-dimensional additional information (A) and a three-dimensional window object (O), the window object (O) being open on at least one side, wherein an inner section (VI1_IS) of the first virtual image (VI1) is represented in a different way than an outer section (VI1_OS) of the first virtual image (VI1), wherein the inner section (VI1_IS) depicts a volume inside the window object (O) and the outer section (VI1_OS) depicts a volume outside the window object (O),c. generating the first augmented image (AI1) which represents the first real image (RI1) on which the first virtual image (VI1) is superimposed in at least a partial area.a medical visualization system (4) and a computer program product.

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