898results about "Computer-aided surgery" patented technology

Needle-guiding systems and methods can facilitate establishing vascular access with a nonmagnetic needle. For example, a method of a needle-guiding system can include detecting and registering registration marks about a patient by patient-facing cameras of an alternative reality (“AR”) device, the AR device thereby establishing its location and orientation relative to a target area of the patient. The method can also include anchoring ultrasound images of the target area as viewed through a display screen of the AR device, the ultrasound images anchored about the patient relative to either an instant or previous location and orientation of the ultrasound probe; and providing an instant virtual needle trajectory of the needle as viewed through the display screen of the AR device, thereby indicating to a clinician whether the needle is properly oriented for establishing vascular access to a target vessel of the ultrasound images.

The invention discloses a radio frequency ablation electrode control method which comprises the following steps: S1, initializing an ablation temperature target value, a safety limit value and a power adjusting range, and loading a pre-stored anal fistula ablation three-stage feature library and impedance-temperature correlation degree thresholds of all stages; s2, collecting the electrode temperature, the electrode-tissue impedance and the ablation duration in real time, and judging the current ablation stage according to the matching relationship between the ablation duration and the three-stage feature library; s3, formulating a state judgment rule according to the current stage; s4, a fuzzy PID algorithm is adopted to calculate a power basic adjusting amount, a power dynamic compensation amount is calculated, and final output power is determined; and S5, repeating the steps S2-S4 to realize closed-loop control, triggering first-level early warning when the parameters are close to the boundary, triggering second-level alarm when the parameters exceed the safety limit value, and recording abnormal data. The stage adaptability is high, the problem of temperature adjustment lag can be solved, the adjustment precision is accurate enough, and the ablation effect can be improved.

The present disclosure provides a target region positioning method, an electronic device and a computer readable storage medium, the target region positioning method comprising: acquiring, by a camera, a target image comprising a skin surface region corresponding to a reaction bone; wherein the reaction bone is a bone having a target feature; identifying the skin surface region from the target image; determining first device coordinate information of a center position of the skin surface region in a device coordinate system; determining second device coordinate information of a center position of a target region comprising a lesion in the device coordinate system according to the first device coordinate information and predetermined first position relationship information; wherein the first position relationship information is position relationship information between the center position of the skin surface region and the center position of the target region.

Needle-guiding systems and methods can facilitate establishing vascular access with a nonmagnetic needle. For example, a method of a needle-guiding system can include detecting and registering registration marks about a patient by patient-facing cameras of an alternative reality ("AR") device, the AR device thereby establishing its location and orientation relative to a target area of the patient. The method can also include anchoring ultrasound images of the target area as viewed through a display screen of the AR device, the ultrasound images anchored about the patient relative to either an instant or previous location and orientation of the ultrasound probe; and providing an instant virtual needle trajectory of the needle as viewed through the display screen of the AR device, thereby indicating to a clinician whether the needle is properly oriented for establishing vascular access to a target vessel of the ultrasound images.

The invention discloses lithotripsy equipment and a control method thereof. The lithotripsy equipment comprises a lithotripsy device, an optical tracking device, a display and control device and an ultrasonic imaging device, the lithotripsy device comprises a mechanical arm module, a shock wave module and a control module; the mechanical arm module and the shock wave module are both electrically connected with the control module, and the control module and the optical tracking device are both electrically connected with the display and control device. The ultrasonic imaging device comprises a handheld ultrasonic probe; the handheld ultrasonic probe is in communication connection with the display and control device; the mechanical arm module comprises a mechanical arm, the shock wave module comprises a shock wave generator, and the shock wave generator is arranged at the front end of the mechanical arm; and a plurality of optical reflection markers are arranged on the backs of the handheld ultrasonic probe and the shock wave generator. According to the lithotripsy equipment provided by the embodiment of the invention, the intelligent degree of the extracorporeal shock wave lithotripsy machine is improved, the extracorporeal shock wave lithotripsy treatment process is simplified, and the treatment positioning precision is improved.

An implantable marker for imaging and surgical guidance by susceptometry comprising one or more pieces of a ferromagnetic material having a total length to diameter ratio of at least about 500, and a total volume of less than about 1×10−11 m3. The one or more pieces of ferromagnetic material may have a high initial relative permeability (μr,i)>about 1000. Also disclosed is a detection system for locating an implantable marker comprising such an implantable marker; at least one drive coil arranged to excite the marker with an alternating magnetic field, and at least one sense coil arranged to detect a signal received from the excited marker; a magnetic field generator arranged to drive an alternating magnetic field through the at least drive coil; and at least one detector arranged to receive the signal from the sense coil and detect one or more harmonics of the drive frequency in the received signal.

The dental handpiece has a handle and a housing with a first light-emitting diode and a first optical sensor. The housing also has a second light-emitting diode, a second optical sensor, shielding windows for each optical and apertures for supplying compressed air to each shielding window. A diffuser is located in each aperture, the diffuser being adapted to generate an air jet forming an air curtain. The dental handpiece can provide a reliable protection of the optical sensors by the air curtain and a high-quality three-dimensional image of an oral cavity during manipulation.

A machine accesses a first image captured prior to initiation of a procedure, where the first image depicts a set of instruments, as well as a second image captured after initiation of the procedure, where the second image depicts a proper subset of the set of instruments depicted in the first image. From the first and second images, the machine may determine that an instrument among the set of instruments depicted in the first image is not depicted among the proper subset of the set of instruments in the second image, and then cause presentation of a notification that indicates the instrument not depicted in the second image is missing. Alternatively, or additionally, the machine may determine whether an instrument among the set of instruments was used in the procedure, and then cause presentation of a notification that indicates whether the instrument was used in the procedure.

An apparatus includes a body, a shaft assembly, and a visualization assembly. The body includes first and second actuators. The shaft assembly extends distally from the body and includes a rigid proximal portion and a steerable distal portion. The steerable distal portion is positioned distally relative to the rigid proximal portion. The first actuator is operable to drive the steerable distal portion to deflect laterally relative to a longitudinal axis defined by the rigid proximal portion. The steerable distal portion is configured to fit within a nasal cavity of a patient. The visualization assembly is disposed within the shaft assembly. The visualization assembly includes a camera. The second actuator is operable to drive longitudinal translation of the visualization assembly relative to the shaft assembly.

An end effector for a catheter including a flexible circuit including a plurality of electrodes is herein disclosed. The flexible circuit is positioned at least partially within an insulative material. In some examples, the end effector includes a framework spaced from the flexible circuit and one or more position sensing loops.

A medical system is disclosed that includes a medical device having an optical fiber, and an interchangeable connection component configured to provide a fiber optic connection between the medical device and capital equipment. The connection component is configured to facilitate cleaning and / or polishing of fiber optic interfaces include therewith. The connection component is also configured for replacement by a medical technician while the capital equipment is operational. The capital equipment may include one or more of an optical interrogator, a patch cable, a medical probe, an ultrasound machine, a display, a magnet sensor, or an electro-cardiogram (ECG) machine. The medical device may include an elongate member configured for insertion within the patient body, where the optical fiber core extends along a length of the elongate member.

A disclosure relates to methods and apparatus for processing an elongated body for a medical instrument. In one arrangement, targeted processing is applied to each of one or more local portions of the elongated body to cause a change in a room temperature magnetic property of material in each local portion, thereby causing the one or more local portions to have different room temperature magnetic properties than other portions of the elongated body.

Method and system for ultrasound treatment. An ultrasound device having at least one tilting ultrasound transducer is deployed onto skin tissue overlying a treatment region of internal tissue of a treated body part. The transducer is induced to transmit ultrasound energy onto skin tissue, such that a body interface implement of the transducer interfaces with the skin tissue surface. A motor-driven oscillator coupled with transducer is oscillated about an oscillation-axis relative to skin tissue surface such that at least one of: a position of the body interface implement, a tilt direction of the body interface implement, and a propagation direction of transmitted ultrasound, oscillates about oscillation-axis. Ultrasound device may be maneuvered to roam over skin tissue along at least one trajectory. Body shape parameters of the treated body part are measured using a measurement assembly including an imaging device, a green screen, and scale markers.

A method for irradiating an image in an optical see-through (OST) head mounted display (HMD) for viewing through, the OST HMD by a user's eye, an object having at least one of known orientation and position and orientation (O / P&O), associated with a first reference frame, the method comprising: generating and irradiating said image for appearing to said user superimposed in an aligned manner to said object, according to predetermined information, eyeball feature position data, and said O / P&O; said predetermined information relates correction data with a plurality of different respective position data values of at least one eyeball feature position of said eye; said predetermined information further includes display corrections of said electro-optical display module with respect to said position data values of said at least one eyeball feature position, with respect to a second reference frame; and said O / P&O is between said second reference and said first reference frame.

Systems and methods are provided for multi-schema analysis of patient specific anatomical features from medical images. The system may receive medical images of a patient and metadata associated with the medical images indicative of a selected pathology, and automatically classify the medical images using a segmentation algorithm. The system may use an anatomical landmark detection algorithm leveraging Deep Reinforcement Learning (DRL) techniques to automatically locate one or more anatomical landmarks associated with the patient specific anatomical feature within the medical images. A 3D surface mesh model may be generated representing the patient specific anatomical features including the located one or more anatomical landmarks. The located one or more anatomical landmarks may be used to guide placement of a 3D model of a medical device that may be fused with the 3D surface mesh model to generate a patient specific 3D model of the medical device.

Provided is a method for determining bending information, applied to a luminal endoscope outer sleeve. A plurality of bending measurement tubes are sequentially arranged on an inner wall of the luminal endoscope outer sleeve; each of the bending measurement tubes corresponds to a unique digital identifier; the bending measurement tubes each comprise a cable and a bourdon tube, wherein fixing end points of the cable and the bourdon tube on the inner wall of the outer sleeve are the same, a fixing starting point of the cable is located at one of a plurality of first calibration positions on the inner wall of the outer sleeve, and a fixing starting point of the bourdon tube is located at a second calibration position of the inner wall of the outer sleeve; a displacement sensor is arranged at the fixing starting point of the cable of each of the bending measurement tubes; and fixing end points of the bending measurement tubes on the inner wall of the outer sleeve are different. The method comprises: for the plurality of bending measurement tubes, determining cable displacement information on the basis of the displacement sensors (S110); and determining bending information of the luminal endoscope outer sleeve on the basis of the digital identifiers of the plurality of bending measurement tubes, the cable displacement information, and sectional diameters of the bourdon tubes (S120).

To provide a method and a system for providing or maintaining a flow of fluid passing through the body passage such as a heart chamber and a blood vessel.SOLUTION: A shooting catheter for targeting a second blood vessel from a first blood vessel includes a catheter including a proximal part and a distal part including a needle opening and a flat rectangular radiopaque marker. The flat rectangular radiopaque marker disappears in rotation under fluoroscopy, and provides information on the rotation alignment of the shooting catheter. The shooting catheter includes a needle configured to extend through the needle opening. A method for positioning a catheter includes rotating the catheter in the first blood vessel until the marker has a thickness (e.g., the smallest thickness) under fluoroscopy. The thickness indicates rotation positioning of the catheter.SELECTED DRAWING: Figure 42B

Methods and systems confirm the treatment focus location of ultrasound energy to be delivered to a patient from a plurality of transducers. The location of focus of treatment ultrasound may be confirmed prior to the start of ultrasound therapy. In some embodiments, ultrasound therapy may comprise delivering treatment ultrasound energy from the treatment ultrasound transducers through the skull to the brain of a patient. Methods for confirming the treatment ultrasound focus location comprise determining receive focus profiles ϕx,v<sub2>i < / sub2>for particular candidate three-dimensional (3D) treatment focus locations and particular assumed ultrasound propagation velocity profiles; performing a pre-treatment (e.g. low-power) ultrasound transmission into the brain of the patient; receiving return signals; and determining the location of treatment focus based at least in part on the received return signals and the receive focus profiles ϕx,v<sub2>i< / sub2>.

A fluidic acoustic coupling system configured for management of fluids in histotripsy therapy is provided, which may include any number of features. Provided herein are systems and methods that provide management and control of fluid delivery and drainage of reservoirs within a fluidics cart of a histotripsy system. Additional embodiments are provided herein.

Apparatuses and methods for performing orthodontic treatment planning are provided. Virtual / Augmented Reality devices can be used to virtually manipulate patient's teeth, modify virtual models of the patient's teeth, analyze the fit of a dental appliance on the patient's teeth, analyze the position of attachment sites for dental appliances, and provide overlays showing forces applied to the patient's teeth. The VR / AR devices can be used by physicians and / or the patient to provide and display treatment planning. In some examples, a length and / or angle of an elastic band or wire and one or more effective forces on a patient's teeth when a dental appliance is applied to the patient's teeth may be determined. A visual overlay graphically illustrating the one or more effective forces may be generated and displayed.

Disclosed are various examples and embodiments of systems, devices, components and methods configured to detect a location of a source of at least one cardiac rhythm disorder in a patient's heart, such as atrial fibrillation, and to classify same. Velocity vector maps reveal the location of the source of the at least one cardiac rhythm disorder in the patient's heart, which may be, by way of example, an active rotor in the patient's myocardium and atrium. The resulting velocity vector map may be further processed and / or analyzed to classify the nature of the patient's cardiac rhythm disorder, e.g., as Type A, B or C atrial fibrillation. The resulting cardiac rhythm classification then can be used to determine the optimal, most efficacious and / or most economic treatment or surgical procedure that should be provided to the individual patient. A simple and computationally efficient intra-cardiac catheter-based navigation system is also described. Also described and disclosed are various intra-cardiac catheter-based navigation systems.

A medical support method includes acquiring a first optical image and an ultrasound image in a case in which an ultrasound endoscope is connected to an image processing device, acquiring a second optical image in a case in which an optical endoscope is connected to the image processing device, outputting the first optical image and the ultrasound image to a display device in a case in which the ultrasound endoscope is connected to the image processing device; and outputting the second optical image and a first recognition result, which is obtained by causing a trained model for an optical image to recognize a first feature region shown in the second optical image, to the display device in a case in which the optical endoscope is connected to the image processing device.

An implant for in-vivo implantation which comprises an assembly of two or more constructive elements (3,4) which are movable relative to each other. Each constructive element (3,4) is partly or completely porous and comprises a porous part (5,6) with a matrix (7,8) of open cells (51,61). A first matrix (7) of the first element (3) comprises a first overlapping part (50) with a form-closed connection to a second overlapping part (60) of a second matrix (8) of the second of the constructive elements (4) through which the first overlapping part extends. The overlapping parts (50,60) are movable relative to each other to change a combined shape of the overlapping parts.

A method for generating a prosthesis by using three-dimensional scan data comprises the steps of: receiving encrypted oral data; receiving model information of an artificial intelligence neural network; determining metadata of the encrypted oral data; determining an operation prediction value on the basis of the model information and the metadata; and determining the size of a sub-operation unit on the basis of the operation prediction value. The size of the sub-operation unit is controlled on the basis of the operation prediction value.

There is described a depth gauge comprising: a drill guide arranged to receive a drill bit; and a sensor assembly, the sensor assembly comprising a displacement sensor for determining a displacement of the drill bit during a drilling procedure.

A dynamometer for detecting a force applied to an intravascular device, comprising: a housing; a channel in the housing configured to receive the intravascular device; and a sensor disposed in the housing to measure a force from the intravascular device to the housing. The dynamometer may also include a plurality of electronic components to process force readings from the sensor, transmit the plurality of readings to an external receiver, and indicate the plurality of force readings to a user.

Disclosed is a method of controlling a modular battery powered handheld surgical instrument. The surgical instrument including a battery, a user input sensor, a controller, a radio frequency (RF) drive circuit, an ultrasonic transducer, ultrasonic transducer drive circuit, and an end effector. The end effector including an electrode electrically coupled to RF drive circuit, an ultrasonic blade acoustically coupled to the ultrasonic transducer, and a sensor to measure tissue parameters. The method includes applying an RF current drive signal to the electrode by the RF drive circuit; applying an ultrasonic drive signal to the ultrasonic transducer by the ultrasonic transducer drive circuit to acoustically excite the ultrasonic blade; controlling intensity, wave shape, and / or frequency of the RF current drive signal and the ultrasonic drive signal on a sensed measure of a tissue or user parameter.

A medical device includes a probe configured for insertion into a body of a patient and including a plurality of electrodes configured to contact tissue within the body. An electrical signal generator applies a train of bipolar pulses between at least one pair of the electrodes in contact with the tissue, each bipolar pulse having a voltage amplitude of at least 200 V and a duration of less than 20 μs, thereby causing irreversible electroporation of the tissue between the at least one pair of the electrodes. One or more electrical sensors sense energy dissipated between the at least one pair of the electrodes during the train of pulses. A controller controls, in response to the one or more electrical sensors, an electrical parameter and a temporal parameter of the train of pulses applied by the electrical signal generator such that the dissipated energy satisfies a predefined criterion.

Bone screw drivers are disclosed that apply torque to a threaded shank of a bone screw assembly and receive a cement delivery device to introduce bone cement through the threaded shank. Also disclosed are driver adapters that couple to a driver in order to facilitate application of torque thereto. The driver adapter can decouple from the driver after implanting a bone screw shank to allow the subsequent use of a cement delivery device in combination with the driver. The devices can be reusable and can employ a number of additional components, including retaining and counter-torque sleeves, driving handles, etc. Further, the devices can allow setup of a bone screw inserter assembly outside a surgical field, such that a completed assembly can be passed to a surgeon or other user for immediate use.