EP4551086A1 - Bildgebende vorrichtung mit erweiterter zoomfunktionalität und fokusnachführung - Google Patents
Bildgebende vorrichtung mit erweiterter zoomfunktionalität und fokusnachführungInfo
- Publication number
- EP4551086A1 EP4551086A1 EP23737958.1A EP23737958A EP4551086A1 EP 4551086 A1 EP4551086 A1 EP 4551086A1 EP 23737958 A EP23737958 A EP 23737958A EP 4551086 A1 EP4551086 A1 EP 4551086A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- scaling
- image capture
- holding arm
- capture device
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00039—Operational features of endoscopes provided with input arrangements for the user
- A61B1/0004—Operational features of endoscopes provided with input arrangements for the user for electronic operation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00006—Operational features of endoscopes characterised by electronic signal processing of control signals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00147—Holding or positioning arrangements
- A61B1/00149—Holding or positioning arrangements using articulated arms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00147—Holding or positioning arrangements
- A61B1/0016—Holding or positioning arrangements using motor drive units
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00188—Optical arrangements with focusing or zooming features
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/30—Surgical robots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/70—Manipulators specially adapted for use in surgery
- A61B34/74—Manipulators with manual electric input means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/555—Constructional details for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/64—Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
- H04N23/675—Focus control based on electronic image sensor signals comprising setting of focusing regions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
- A61B1/000095—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope for image enhancement
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/70—Manipulators specially adapted for use in surgery
- A61B34/74—Manipulators with manual electric input means
- A61B2034/742—Joysticks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
- A61B90/361—Image-producing devices, e.g. surgical cameras
- A61B2090/3614—Image-producing devices, e.g. surgical cameras using optical fibre
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
Definitions
- the present invention relates to an imaging device and a method for the scalable visual representation of an area to be viewed, in particular an operating area, with an extended zoom functionality and an optimized focus adjustment.
- Endoscopes and exoscopes for use in diagnostic or surgical procedures on patients are well known from the prior art.
- the endoscope or exoscope is sometimes arranged on a motorized holding arm, which is placed by the user in such a way that a camera unit of the endoscope or exoscope conveniently displays the area to be captured, usually an operating site, for the treating surgeon.
- the captured image is then output as a live image on a suitable imaging unit such as a screen.
- a distance between the holding arm and the patient is generally chosen in such a way that, on the one hand, the image section shown is suitable for the surgeon and at the same time good access to the patient is guaranteed.
- a focus of the camera unit is usually adjusted manually.
- the respective camera unit of the endoscope or exoscope is equipped with scaling means, in particular an optical or electronic or digital zoom, with which the user can obtain an image of the captured area before and/or during a treatment or procedure Can be enlarged or reduced as needed.
- scaling means in particular an optical or electronic or digital zoom
- the readjustment or tracking of a focus setting of the camera unit represents a challenge, since the depth of field is very small, particularly with microscopic lenses, so that even a small change in the position of the holding arm relative to the captured area or the surgical site can lead to blurring.
- the provision of continuous autofocus entails the risk of undesirably pulsating image sharpness or the focusing of an undesirable partial area within the overall area captured.
- Manual or user-triggered focus adjustment is also disadvantageous since the user usually has both hands on the instruments at the site during an intervention or treatment and additional manual operation of the device is undesirable.
- the US 11,033,338 B2 discloses an imaging system comprising an endoscope with a camera head for image capture and a display connected thereto for the enlarged display of a captured image area during an endoscopic procedure, the endoscope being arranged on a movable holding arm.
- the system has a control device for controlling the camera head on the endoscope and a control device for controlling the holding arm, the camera head being designed to provide an optical and electronic zoom.
- a mechanical scaling function is provided by changing the holding arm position along an optical axis of the endoscope.
- a respective adjustment of the focus setting of the camera head is carried out using an autofocus device, which has the disadvantages outlined above.
- the US 8,715,167 B1 discloses a telesurgical system for minimally invasive procedures, comprising an input device and a robot system connected thereto, having a first manipulator with an attached endoscope for optical image capture, which is connected to an input console of the telesurgical system for image display, and a second manipulator , which is designed to hold and guide a surgical instrument and which is connected to an input device on the input console.
- the telesurgical system is designed to change a focus and a scaling factor in response to a movement of the robot system, for example to maintain focusing of the image capture device when the distance to an object to be captured changes.
- the robot system comprises several sensors which monitor a movement of the robot system elements, determine a change in distance from an initial focus point in a coordinate system of the robot system and, based on this, adjust the focus setting of the image capture device.
- this enables precise position detection and the adjustment of the focus setting based on this, but on the other hand, this requires a large number of sensors on the robot system and the associated information monitoring of each of these sensors, which not only requires increased hardware effort, but also an increased susceptibility to errors in the focus setting, which is directly dependent on it brings with it.
- the object of the present invention is therefore to at least partially overcome the above-mentioned disadvantages of the prior art.
- an imaging device for the scalable visual representation of an area to be viewed, in particular an operating area.
- the device comprises an optical image capture device for capturing a recorded image of the area to be viewed, optical and/or electronic scaling means assigned to the image capture device for scaling the captured image, as well as an adjustable focusing device assigned to the image capture device, a robotic holding arm for moving the image capture device relative to the image to be viewed Area, wherein the holding arm is designed to provide a mechanical scaling function by adapting an axial distance between the image capture device and the area to be viewed, an input unit for recording a user-side input command for scaling the recorded image on a display unit, and a control device for setting the scaling means of the Image capture device and the mechanical scaling function of the holding arm, as well as the focusing device.
- control device is designed in such a way that the mechanical scaling function and the focusing device can be adjusted by controlling the holding arm and the focusing device based solely on the input command for scaling the recorded image detected by the input unit, in particular a detected target value for the scaling, to carry out.
- a method for the scalable visual representation of an area to be viewed, in particular an operating area comprises at least the steps: capturing a recorded image of the area to be viewed with an optical image capture device for display on a display unit; initial focus adjustment of the captured image by manual and/or automatic adjustment of a focusing device assigned to the image capture device; Detecting an input command for scaling the captured image using an input unit; Scaling the recorded image on the display unit by adjusting optical and/or electronic scaling means assigned to the image capture device and setting a mechanical scaling function by moving the image capture device along an optical axis of the image capture device by means of a robotic holding arm; Focusing the scaled recording image by adjusting the focusing device.
- the mechanical scaling function is set by moving the holding arm and the focusing device to track a focus or an image sharpness of the recorded image by controlling the focusing device based solely on the recorded input command for scaling the recorded image.
- This is understood to mean that, in contrast to the control of holding arm movement and corresponding focus adjustment known from the prior art, no further input variables, in particular no actual values for position or movement data of the holding arm, are recorded as feedback values for a control of the mechanical scaling function and the focusing device based on this.
- the present control or activation of the mechanical scaling function and the focusing device takes place without or independently of a detection of feedback values, in particular without detection of further input variables or values, in particular without detection of actual values for positions that can be detected, for example, by appropriate sensors - or movement data of the holding arm.
- an improved imaging device and a corresponding method are thereby provided, which enables scalable imaging of an operating area with extended scaling or zoom functionality, and at the same time simple and effective or efficient control of the system components and in particular adjustment of the holding arm and Tracking of the image sharpness of the image is permitted.
- a significantly faster and sufficiently accurate tracking of the focus setting can be carried out based on the measured input variable, without having to provide a control based on a determination of actual values, in particular for position or movement data of the holding arm.
- control device is designed to control or actuate the scaling means of the image capture device, the mechanical scaling function of the holding arm and the focusing device solely based on the input command recorded by the input unit for scaling the recorded image and in particular without output. reading or evaluating position or movement data of the robotic holding arm to provide a control variable.
- both the scaling means of the robotic holding arm and the focusing device are controlled only based on the recorded input command and therefore not based on further control values, in particular without recording position or movement data of the robotic holding arm.
- the control device is preferably further designed to detect a setpoint for the scaling of the recorded image or a desired change in the scaling of the recorded image and to control the scaling means of the image capture device, the mechanical scaling function of the holding arm, and the focusing device based on the setpoint detected by the input unit .
- a calculation of respective target values for the setting of the scaling means, the mechanical scaling function and the focusing device is preferably carried out based on the recorded target value for a desired scaling of the recorded image, with the control device then making a corresponding adjustment of the individual components based on the calculated target values.
- the mechanical scaling function of the holding arm is preferably carried out exclusively by changing the position of the image capture device along its optical axis.
- an axial distance i.e. a distance along the optical axis of the image capture device, is changed between the image capture device and the area to be viewed.
- the image capture device is advantageously arranged on a holding element or manipulator of the robotic holding arm, which is preferably arranged at the end.
- the holding element arranged at the end or a manipulator of the robotic holding arm is preferably movable based on a user input by means of an assigned input device.
- the assigned input can be the device-side input unit, which can be designed selectively for movable control of the robotic holding arm, in addition to controlling the mechanical scaling function. It goes without saying that a separate input unit can also be provided for controlling the holding arm.
- the holding arm and/or the control device is designed such that a change in the axial distance between the image capture device and the area to be viewed is only possible when the mechanical scaling function is provided.
- the holding arm and/or the control device is designed in such a way that a change in the axial distance between the image capture device and the area to be viewed is prevented by the device-side input unit or a separate input unit for controlling the holding arm outside the control to provide the mechanical scaling function. Is blocked.
- the holding arm and/or the control device are preferably designed in such a way that a holding element arranged at the end or a manipulator of the robotic holding arm, on which the image capture device is arranged, is moved and/or rotated by the input unit in one or more dimensions around the area to be viewed can be done, with the axial distance between the image capture device and the area to be viewed being kept constant.
- the robotic holding arm and/or the control device are preferably designed in such a way that the image capture device arranged on the holding arm can be moved, in particular on a, for example, spherical surface, around the area to be viewed, in particular an operating site or a trocar, while maintaining a constant axial distance between the image capture device and the area to be viewed.
- the control device of the device can be a central control device, which is connected at least to the input unit, the image capture device and the robotic holding arm. Furthermore, the tax eration device include at least one separate control unit, in particular for controlling the robotic holding arm, or can be selectively connected to it. Here, the separate control unit is designed for preferably bidirectional data communication with the control device of the device.
- the scaling means is assigned a preferably internal memory and/or control unit for providing a minimum and maximum scaling factor as well as a current actual scaling factor to the control device of the device.
- scaling factor is understood to mean an enlargement or reduction factor or zoom factor of the captured image.
- a respective minimum and maximum scaling factor can be stored for a respective image capture device in the storage and/or control unit.
- a respective minimum and maximum scaling factor can be dependent in particular on a respective optics of the image capture device and/or a respective image sensor of the image capture device.
- the image capture device can have exchangeable optics, with different sets for a minimum and maximum scaling factor being stored or able to be stored in the storage and/or control unit for different optics.
- the minimum and/or maximum limits can in particular correspond to a respective lower and/or upper limit for the reduction or enlargement of a zoom lens, which are dependent on the lenses used and their possible travel paths in the lens.
- a different electronic or digital scaling factor can be stored or can be stored.
- the values for a minimum and maximum scaling factor for the optical and/or electronic Scaling means can also be configurable, in particular adjustable by user input.
- the optical scaling means can in particular comprise motor-controllable magnification optics of the image capture device, in order to provide a selectively adjustable optical magnification or zoom functionality of the image capture device.
- the electronic scaling means can in particular include a software-based enlargement and/or reduction or zoom functionality of the captured image, i.e. a so-called digital zoom.
- the focusing device of the device is preferably a selectively and preferably motor-driven adjustable focus optics assigned to the image capture device for adjusting the image sharpness of the captured image.
- the focusing device is assigned a preferably internal memory and/or control unit for providing a minimum and maximum focus value or a focus setting as well as a current actual focus value or an actual focus setting to the control device.
- the focus setting here includes in particular a position of the focus lens in an optics of the image capture device.
- the respective values can be stored in the memory and/or control unit analogously to the above statements for a scaling factor for a respective image capture device.
- a respective minimum and maximum focus value or a focus setting can be particularly dependent on a respective optics of the image capture device and/or a respective image sensor of the image capture device.
- the storage and/or control unit assigned to the focusing device preferably internal, is designed to provide a focus characteristic curve of the respective image capture device for assigning a respective to provide a specific focus setting for a respective magnification by the scaling means of the image capture device and/or a respective distance to the area to be observed, in particular in the case of the mechanical scaling function.
- the focus characteristic curve here preferably comprises a curve or characteristic curve, from which a respective focus lens position relative to a respective distance to the area to be viewed for focusing the optics or the captured image emerges.
- the respective focus characteristic curve can here be assigned to a respective image capture device with an associated focus lens in the memory and/or control unit, wherein the respective setting values for a focus lens assigned to the image capture device can be predefined and/or based on empirical measurement data with the respective image capture device and the associated one learned or can be learned using a robotic holder arm.
- control device is designed to compare a desired value for scaling detected by the input unit with a minimum and maximum scaling factor, as well as a provided actual scaling factor of the scaling means, ie a current zoom factor of the scaling means, and based on this a selective or combined To control the optical and/or electronic scaling means and the robotic holding arm to provide the mechanical scaling function.
- control device can further be designed to carry out a preferred control of the optical and/or electronic scaling means and/or the mechanical scaling function based on the detected target value for scaling and a comparison with a current actual scaling factor of the scaling means.
- control device is designed to first control the optical and/or electronic scaling means until a minimum or maximum scaling factor of the scaling means is reached and only then to carry out a further adjustment of the scaling by controlling the robotic holding arm and thus through the mechanical scaling function .
- control device is preferably designed to make a necessary change in the holding arm position, in particular a change in position of the image capture device arranged on the holding arm, along an optical axis of the image capture device, based on the detected input command, in particular based on a target value for scaling the recorded image calculate.
- control device is preferably designed to output one or more target values for a movement, in particular a change in position of the robotic holding arm along the optical axis of the image capture device in order to change its position.
- the respective position change can then be carried out by controlling the robotic holding arm by the control device itself or a separate control unit of the robotic holding arm, to which the target values are provided or transmitted.
- control device is designed in such a way that, based on the calculated change in the holding arm position, in particular a change in the axial distance to the area to be viewed, a control of the focusing device and in particular an adjustment of the position of the focus lens of the image capture device is carried out.
- the focusing device is preferably controlled by reading out a stored focus characteristic curve of the image capture device, as described above.
- the control device can be designed in such a way that when the recorded image is scaled by adjusting the optical and/or electronic scaling means and/or the mechanical scaling function, a simultaneous and/or downstream control of the focusing device for tracking the focus and preferably based on a stored focus characteristic curve of the respective image capture device to determine.
- the input unit of the device is designed such that it has a variable, in particular deflection-dependent Allows setpoint capture of a scaling factor.
- the input unit preferably comprises input means with several degrees of freedom, which are designed to detect a deflection in a respective direction.
- the input unit can comprise a 3D joystick, which, in addition to detecting lateral input commands in a first movement plane, enables vertical input commands to be detected in a direction perpendicular to the first movement plane.
- the 3D joystick can be designed to detect a deflection about a vertical axis of rotation and/or a tilt axis that is preferably arranged perpendicular thereto.
- a setpoint detection for the scaling factor can preferably be carried out by detecting a vertical input command, in particular in a first direction for reduction and in a second direction, opposite to the first, for enlargement.
- the input unit can be operated by a user by hand or with a foot.
- the input unit can also be designed to selectively control the image capture device and/or the movable holding arm.
- the input unit can, for example, have a selective input function, for example a manually operated button or foot switch, by means of which between control of the holding arm by the input unit, in particular for changing the position and/or position of the holding arm, and detection of a desired scaling factor or detection can be distinguished by adjusting the current scaling factor.
- the image capture device is a known stereo exoscope.
- the stereo exoscope preferably has at least optical, controllable scaling means, in particular an optical zoom, and a motor-driven focus control.
- the image capture device can also have a distally arranged mirror unit for a 90° deflection of the viewing or capture direction.
- the mirror unit can optionally be designed to be movable or rotatable.
- the image capture device can, for example, have two to four image sensors, which are used for capture a (stereo) recording image with a resolution of preferably 4K or higher.
- the image capture device comprises an autofocus function, which can be activated and/or controlled by the control device.
- the control device can be designed to activate a preferably one-time, i.e. non-continuous, autofocus function of the image capture device after a holding arm movement has ended. Since the present control of the mechanical scaling function or the holding arm takes place without feedback of sensor data from a holding arm, the control device is designed, for example, in such a way that, based on the respective calculated target values for a movement of the holding arm, a time estimate is made as to how long the robotic holding arm will last the implementation of the desired or calculated movement is required, and based on this the autofocus function is activated after the previously calculated time interval has expired.
- An autofocus function of the image capture device can be implemented using means known per se; in particular, the autofocus function can include a contrast measurement, a phase comparison or an active distance measurement.
- the focusing device or focus tracking of the recorded image is scaled and adjusted by controlling the scaling means, the robotic holding arm and the focusing device based solely on the input command for scaling the recorded image recorded by the input unit and in particular without reading out or Evaluating position or movement data of the robotic holding arm. Scaling of the recorded image and focusing of the recorded image can occur simultaneously or sequentially.
- scaling is initially carried out by controlling the scaling means of the image capture device and only when a maximum scaling factor of the image capture device is exceeded is scaling by changing the axial Distance between the image capture device and the area to be viewed by changing the position of the holding arm.
- control can advantageously be carried out in such a way that if the recorded image is reduced in size, first a scaling by changing the axial distance between the image capture device and the area to be viewed by changing the holding arm position, in particular an increase in the axial distance, and only when a predefined scaling factor is exceeded is a control the scaling means of the image capture device takes place.
- the reverse order is also possible, so that when scaling with the desired magnification, a mechanical scaling is initially carried out by the holding arm, for example if the control recognizes that a desired target scaling is not possible using the scaling means of the image capture device alone. Further scaling then takes place using the optical and/or electronic scaling means. When reducing the size, the order is the same.
- activation of the focusing device when changing the holding arm position comprises at least the following further steps: determining an initial focus setting before executing a movement of the holding arm; Calculating the necessary change in the holding arm position along the optical axis of the image capture device to provide the captured target value for scaling the captured image; Calculation of a target value for the focus adjustment based on the calculated change in the holding arm position and based on a focus characteristic curve stored for the image capture device; Control of the focusing device to set the determined target value.
- Fig. 1 a schematic view of an exemplary embodiment of a device according to the invention
- Fig. 2 a side view of an exemplary embodiment of an image capture device according to the invention
- FIG. 3 is a block diagram of the device components
- Fig. 6 is a schematic representation of a focus characteristic.
- the device 100 is designed for the scalable visual representation of an area 101 to be viewed, in particular an operating area, shown here only as a schematic example.
- the area 101 to be considered can be an operation site.
- the device 100 has an image capture device 102, which is designed to capture a recorded image, in particular a live video image.
- the image capture device 102 can be arranged or can be arranged, for example, at a distance of 20 to 50 cm above an area to be captured.
- the image capture device 102 is arranged on an end section or manipulator 103a of a robotic holding arm 103.
- the robotic holding arm 103 can be arranged on a stand element 104 such as a selectively movable cart.
- the image capture device 102 is further connected to a display unit 105, on which the captured and selectively scalable recorded image is output.
- the device 100 further comprises an input unit 106 and preferably a foot switch 107 assigned to it.
- the foot switch 107 can be designed to selectively switch the control of the robotic holding arm 103 or the image capture device 102.
- the input unit 106 is preferably designed as a 3D joystick and preferably enables, in addition to the detection of lateral input commands (double arrows A, B), the detection of a vertical movement (double arrow C). Furthermore, the input unit 106 can be designed to detect a rotational movement and/or a tilting movement of the 3D joystick (not shown).
- the input unit 106 is designed in particular to detect an input command for scaling or changing the scaling of the recorded image shown on the display unit 105.
- the input unit is preferably designed to detect a deflection-dependent setpoint detection of the scaling factor, in particular a deflection-dependent change in a current scaling factor. This means that a greater deflection of the 3D joystick along the double arrow C leads to a greater enlargement or reduction of the recorded image on the display unit 105.
- a scaling, ie a reduction or enlargement, of the recorded image can be achieved by means of optical and/or electronic scaling means 108, 109 assigned to the image capture device 102 (see FIG.
- Fig. 2 shows a side view of a preferred exemplary embodiment of the image capture device 102.
- the image capture device in the present case is a stereo exoscope known per se. This preferably has motor-controllable optical scaling means, i.e. an optical zoom 108 assigned to or encompassed by an optics of the exoscope, as well as a preferably motor-controllable focusing device 112, i.e. a focus lens assigned to or encompassed by an optics of the exoscope.
- the image capture device 102 further comprises a distally arranged mirror unit 113 for a 90° deflection of the viewing or capture direction.
- the image capture device 102 can have a filter wheel 114 for holding different, application-specific color filters.
- the image capture device can additionally have an illumination unit, not shown, for illuminating the area to be viewed.
- the device 100 comprises a control device 115, which is connected to the image capture device 102, the robotic holding arm 103 and the input unit 106.
- the control device 115 can include a central control unit with a processor and associated memory means (not shown).
- the control device is designed in such a way that it adjusts the mechanical scaling function 110 and the focusing device 112 by controlling the holding arm 103 and the focusing device 112 without regulation using sensor values of the holding arm 103, in particular without actual values for position or movement data of the Holding arm 103 carries out.
- control device 115 should control the holding arm 103 and the focusing device 112 only based on an input command detected by the input unit 106 for scaling the recorded image or for changing the scaling of the recorded image.
- the control unit 115 is designed to control the mechanical scaling function 110 of the holding arm 103 by varying an axial distance d between the image capture device 102 and the area 101 to be viewed.
- the control device 115 is designed such that it can control an optical scaling function 108 of the image capture device 102, in particular by adjusting the lens optics, and / or an electronic scaling function 109, in particular by displaying a partial section of the digital image area on the display unit 105.
- the control device 115 is preferably designed to read out a respective actual value of the optical and/or electronic scaling means 108, 109, in particular a current magnification or zoom factor.
- the optical and/or electronic scaling means 108, 109 can have an internal memory and/or control unit, which has stored a respective minimum and maximum scaling factor in addition to an actual value for an existing scaling factor.
- the control device 115 is further designed for selective or combined control of the scaling means 108, 109 and the mechanical scaling function 110 in order to provide an expanded scaling range or an expanded overall zoom range (see also FIG. 5).
- the control device 115 enables focus tracking of the recorded image by preferably simultaneously or sequentially controlling the focusing device 112.
- the focusing device 112 preferably also has an internal memory and/or control unit, which can provide a current actual value of a focus setting of the focusing device 112 to the control device.
- a respective focus characteristic curve 116 for the respective image capture device or an optics or identification number of the image capture device 102 is stored in the focusing device 112 and/or in the control device 115, from which the connection between a respective focus setting or a position of the focus lens Fp in the optics is derived the image capture device 102 to the respective distance d of the image capture device 102 or the optics of the image capture device 102 to the area 101 to be viewed.
- it can be read from the stored focus characteristic curve to which position of the focus lens the respective focusing device is to be set in order to achieve focusing of the recorded image at a certain distance d between the detection optics and the area 101 to be viewed.
- FIG. 4 shows a flowchart 200 for an inventive control of optical scaling means 108 of an image capture device 102 and the mechanical scaling function 110 to provide extended scaling, with tracking of a focus setting, for example for an enlargement of the recorded image.
- the position of the image capture device 102 relative to the area 101 to be viewed is adjusted manually and/or electronically, in particular by a desired orientation of the robotic holding arm 103 and the image capture device 102.
- the user can select a desired viewing angle and a desired distance d between the image capture device 102 and the area 101.
- an initial focus adjustment of the captured image is initially carried out by manual and/or electronic adjustment of a focusing device 112 assigned to the image capture device 102.
- an initial scaling or magnification factor can also be adjusted by manual and/or electronic adjustment, for example the optical scaling means 108.
- step 202 the scaling means 108 and the focusing device 112 are read out by the control device 115 to provide actual values for a current scaling factor of the image capture device 102 and a focus setting or a set position of the focus lens of the optics of the image capture device 102. This can be done by means of the stored focus characteristic curve, the focus distance or the distance d between the image capture device 102 and the viewing area 101 can be determined (position Po, cf. Fig. 6).
- Step 202 can be triggered, for example, by pressing a foot switch 107, whereby the foot switch 107 can serve as a trigger for the possibility of changing a scaling by input on the input unit or the 3D joystick 106.
- step 202 can also be triggered directly on the input unit 106.
- step 203 the input of a desired scaling factor or a desired change in the scaling factor is recorded using the input unit 106.
- the input unit 106 can record a setpoint for a desired magnification, which is transmitted to the control device 115.
- step 204 based on the user input or the desired magnification, a new scaling or magnification factor is calculated, which should be set by the device.
- a comparison is made with the recorded actual scaling factor and a minimum and maximum value for the scaling factor of the scaling means 108.
- An increase in size using the scaling means 108 of the image capture device 102 can take place until a stored maximum value of the scaling means 108 is reached, without any control the mechanical scaling function 110 takes place, see iteration loop 205.
- a necessary change in distance d1 to the area 101 to be viewed is calculated in step 207, which is necessary to achieve the desired remaining magnification. Based on this, a setpoint value is then output in step 208 for controlling the robotic holding arm 103 and thus for changing and in particular shortening the distance d along the optical axis 111 towards a position Pi of the holding arm 103.
- the focusing device 112 is activated by the control device 115 to track the image sharpness.
- the focus lens is adjusted based on the stored focus characteristic curve.
- the control device 115 determines the necessary setting of the focus device or the position Fi of the focus lens in the optics of the image capture device 102 based on the previously determined distance change d1 and thus the new position Pi (see FIG. 6).
- control is preferably carried out by the control device 115 such that the mechanical scaling function 110 is first activated to reduce the scaling factor.
- the axial distance d is increased until the previously controlled distance change d1 is reached.
- the scaling means 108 of the image capture device 102 are then activated.
- the scaling means 108 are controlled for reduction until a stored minimum value of the scaling means is reached. Once the minimum value of the scaling means 108 has been reached, the mechanical scaling function 110 is then activated by increasing the axial distance d again, i.e. the image capture device 102 is further removed along the optical axis 111.
- control device 115 The control described above by the control device 115 is explained again below with reference to the schematic representation in FIG. 5, from which a scaling area 120 of the exemplary optical scaling means 108 of the image capture device 102 emerges.
- the optical scaling means 108 is enlarged (arrow 121) or reduced (arrow 122)
- the optical scaling means 108 is first activated until a maximum scaling factor Smax or a minimum scaling factor Smin is reached is.
- the mechanical scaling function 110 is activated, either to increase the size by shortening the axial distance d between the image capture device 102 and the operating area 101 in the area 123 or to reduce the size by increasing the axial distance in the area 124.
- the mechanical scaling function is first controlled to reduce or increase the scaling factor until a distance is reached which lies within the area 120, at which the optical scaling means 108 can be used.
- the control described above can be dependent on activation of a foot switch. If, for example, the foot switch has been released after a reduction (arrow 122) in the area 124, the optical scaling means 108 can initially be activated immediately, deviating from the control described above and, for example, if a scaling factor from the area 124 is increased (again). and only when a maximum possible scaling factor of the optical scaling means 108 is reached is the mechanical scaling function 110 activated for further enlargement.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Biophysics (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Multimedia (AREA)
- Robotics (AREA)
- General Physics & Mathematics (AREA)
- Microscoopes, Condenser (AREA)
- Lens Barrels (AREA)
- Studio Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022116672.4A DE102022116672A1 (de) | 2022-07-04 | 2022-07-04 | Bildgebende Vorrichtung mit erweiterter Zoomfunktionalität und Fokusnachführung |
| PCT/EP2023/067941 WO2024008564A1 (de) | 2022-07-04 | 2023-06-29 | Bildgebende vorrichtung mit erweiterter zoomfunktionalität und fokusnachführung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4551086A1 true EP4551086A1 (de) | 2025-05-14 |
Family
ID=87136935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23737958.1A Pending EP4551086A1 (de) | 2022-07-04 | 2023-06-29 | Bildgebende vorrichtung mit erweiterter zoomfunktionalität und fokusnachführung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250392821A1 (de) |
| EP (1) | EP4551086A1 (de) |
| CN (1) | CN119486650A (de) |
| DE (1) | DE102022116672A1 (de) |
| WO (1) | WO2024008564A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8079950B2 (en) * | 2005-09-29 | 2011-12-20 | Intuitive Surgical Operations, Inc. | Autofocus and/or autoscaling in telesurgery |
| US8808164B2 (en) * | 2008-03-28 | 2014-08-19 | Intuitive Surgical Operations, Inc. | Controlling a robotic surgical tool with a display monitor |
| JP6366295B2 (ja) * | 2014-02-21 | 2018-08-01 | キヤノン株式会社 | 光学機器および制御方法 |
| JP6657933B2 (ja) * | 2015-12-25 | 2020-03-04 | ソニー株式会社 | 医療用撮像装置及び手術ナビゲーションシステム |
| WO2017145475A1 (ja) | 2016-02-24 | 2017-08-31 | ソニー株式会社 | 医療用情報処理装置、情報処理方法、医療用情報処理システム |
| US10917543B2 (en) * | 2017-04-24 | 2021-02-09 | Alcon Inc. | Stereoscopic visualization camera and integrated robotics platform |
| EP3753519A1 (de) * | 2019-06-19 | 2020-12-23 | Karl Storz SE & Co. KG | Medizinische handhabungsvorrichtung zur steuerung einer handhabungsvorrichtung |
| EP3753520B1 (de) * | 2019-06-19 | 2025-11-26 | Karl Storz SE & Co. KG | Medizinische handhabungsvorrichtung zur steuerung einer handhabungsvorrichtung |
| EP3753521B1 (de) * | 2019-06-19 | 2025-11-26 | Karl Storz SE & Co. KG | Medizinische handhabungsvorrichtung zur steuerung einer handhabungsvorrichtung |
-
2022
- 2022-07-04 DE DE102022116672.4A patent/DE102022116672A1/de active Pending
-
2023
- 2023-06-29 WO PCT/EP2023/067941 patent/WO2024008564A1/de not_active Ceased
- 2023-06-29 EP EP23737958.1A patent/EP4551086A1/de active Pending
- 2023-06-29 CN CN202380051896.3A patent/CN119486650A/zh active Pending
- 2023-06-29 US US18/880,344 patent/US20250392821A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250392821A1 (en) | 2025-12-25 |
| CN119486650A (zh) | 2025-02-18 |
| DE102022116672A1 (de) | 2024-01-04 |
| WO2024008564A1 (de) | 2024-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE4422522B4 (de) | Beobachtungs- und/oder Dokumentationseinrichtung mit vorgeschaltetem Endoskop sowie Verfahren zu deren Betrieb | |
| EP3791774B1 (de) | Beobachtungsvorrichtung, insbesondere medizinische beobachtungsvorrichtung, mit einer bedieneinheit sowie verwendung eines eingabemoduls | |
| DE102013012839B4 (de) | Robotersystem | |
| DE102019114817B4 (de) | Bildgebungssystem und Verfahren zur Beobachtung | |
| WO2015014669A1 (de) | Verfahren und vorrichtung zum festlegen eines arbeitsbereichs eines roboters | |
| WO2012119694A1 (de) | Verfahren und system zur darstellung videoendoskopischer bilddaten eines videoendoskops | |
| EP3267235A1 (de) | Optisches system eines stereo-videoendoskops, stereo-videoendoskop und verfahren zum betreiben eines optischen systems eines stereo-videoendoskops | |
| EP3204813B2 (de) | Mikroskop mit sich automatisch anpassender irisblende | |
| EP2614635A1 (de) | Kamerasystem und verfahren zur einstellung eines kamerasystems | |
| DE4304422C1 (de) | Endoskop | |
| WO2024008564A1 (de) | Bildgebende vorrichtung mit erweiterter zoomfunktionalität und fokusnachführung | |
| DE19504443A1 (de) | Stereomikroskop | |
| DE102015216573A1 (de) | Digitales Operationsmikroskopiesystem | |
| DE60023015T2 (de) | Adapter für eine Mikroskopkamera mit Steuerungsmotoren | |
| DE102017114562B4 (de) | Mikroskop und Verfahren zum Mikroskopieren einer Probe unter einem veränderbaren mechanischen Parameter | |
| DE102004052753A1 (de) | Verfahren und Operations-Assistenz-System zur Steuerung der Nachführung zumindest eines Hilfsinstrumentes bei einem medizinisch minimal-invasiven Eingriff | |
| DE102010027905B4 (de) | Videoendoskopsystem und Verfahren zum Betreiben eines Videoendoskopsystems | |
| DE4204601B4 (de) | Vorrichtung zum Erfassen von Lageinformationen mit einer optischen Beobachtungseinheit und Verfahren zur Ermittlung von Lageinformationen | |
| DE102023114945B3 (de) | Computerimplementiertes Bildgebungsverfahren und optisches Beobachtungsgerät | |
| EP3922161B1 (de) | Endoskop mit schwenkbarer bilderfassungseinrichtung | |
| DE102019009282B4 (de) | Bildgebungssystem und Verfahren zur Beobachtung | |
| WO2019038386A1 (de) | VORRICHTUNG ZUR AKTORISCHEN VERSTELLUNG DER VERGRÖßERUNGSSTUFEN EINES VERGRÖßERUNGSWECHSLERS | |
| DE102010039263A1 (de) | Kamerakopf für ein endoskopisches Instrument und Videoendoskopiesystem | |
| WO2024018011A1 (de) | Steuervorrichtung und system, sowie system mit einem medizinischen operationsinstrument, einer datenerfassungsvorrichtung und einer datenverarbeitungseinrichtung | |
| WO2025087816A1 (de) | Verfahren zur medizinischen bildgebung und medizinisches bildgebungssystem |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250127 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Free format text: CASE NUMBER: UPC_APP_6240_4551086/2025 Effective date: 20250908 |