1226results about "Computer-aided surgery" patented technology

To provide a catheter having a variable arcuate distal part with improved contraction and bending radius characteristics, along with greater durability.SOLUTION: A catheter with a variable circular loop responsive to a contraction wire for coiling is supported by a member having a tapered distal section that transitions from a circular cross-section to a generally rectangular cross-section while maintaining a uniform cross-sectional area along the entire tapered length for improved coiling characteristics. A radially constrictive sleeve prevents separation of the contraction wire from the support member to minimize misshaping of the loop during contraction.SELECTED DRAWING: Figure 1

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.

An ultrasound imaging system configured to generate a three-dimensional (3D) ultrasound image of a target area. The ultrasound imaging system includes a console including one or more processors and non-transitory computer readable medium having stored thereon one or more logic modules, and an ultrasound probe configured to acquire a plurality of ultrasound images of a target area. The ultrasound probe can be coupled to the console by an ultrasound probe connector having optical fiber including one or more core fibers. The console is configured to generate the 3D ultrasound image by stitching together the plurality of ultrasound images, starting from a point of reference. The point of reference can be the ultrasound probe, one or more anatomical targets, an elongate medical device, a reference magnet, or one or more accelerometers.

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.

Aspects of the present disclosure relate to flexible catheters for electrophysiological mapping and ablation using high-density electrode arrays. These catheters can be used to detect the electrophysiological properties of tissue in contact with the electrodes and perform monopolar and bipolar ablation of the tissue.

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 disclosed technology includes an end effector for a medical probe. The end effector can comprise an expandable distal end assembly extending along a longitudinal axis. The expandable distal end assembly can extend radially outward from the longitudinal axis and define an outer diameter. The end effector can further comprise a distal tip extending distally from the expandable distal end assembly along the longitudinal axis over a tip length greater than the outer diameter. The distal tip can be fixed longitudinally in relation to the expandable distal end assembly and be deflectable with respect to the longitudinal axis. The tip can comprise an electrode configured to deliver ablative energy to tissue or receive signals from tissue.

An apparatus for controlling an electroporation catheter is provided. The electroporation catheter includes a distal end, a proximal end, a plurality of splines extending from the distal end to the proximal end, and a plurality of electrodes arranged on the plurality of splines and defining at least one quadripolar array, each quadripolar array defined by four electrodes of the plurality of electrodes. The apparatus includes a pulse generator coupled to the electroporation catheter, and a computing device coupled to the pulse generator, the computing device operable to control the pulse generator to selectively energize the electrodes defining the at least one quadripolar array according to a first energization pattern, and selectively energize the electrodes defining the at least one quadripolar array according to a second energization pattern, wherein the first and second energization patterns are different from one another.

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 present invention discloses a device, which includes a catheter and an end effector. The size and structure of at least a portion of the catheter are configured to be assembled in the inner cavity of the cardiovascular system. The end effector is positioned at the distal end of the catheter. The end effector includes a panel, a plurality of mapping electrodes positioned on a first surface of the panel, and a plurality of ablation electrodes positioned on the first surface of the panel. The mapping electrodes are configured to sense the potential in the tissue contacting the mapping electrodes. The ablation electrodes are operable to ablate the tissue contacting the ablation electrodes.

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.

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.

A method and system for scanning are provided. The method may include obtaining one or more images of a target subject acquired by an imaging device; determining a three-dimensional (3D) geometric model of the target subject based on the one or more images; obtaining an anatomical structure model of at least a portion of the target subject; obtaining a combination model by combining the 3D geometric model of the target subject and the anatomical structure model of at least a portion of the target subject; and determining one or more scanning parameters of the target subject based on the combination model.

A laparoscopic imaging apparatus is described herein. The laparoscopic imaging apparatus includes a shaft having a proximal end opposite a distal end, wherein the proximal end is configured for attachment to an actuator, and the distal end is configured for attachment of a laparoscopic tool and for insertion into patient anatomy. The laparoscopic tool pivots on a first gimbal apparatus that is actuable from the actuator at the proximal end of the shaft, to rotate the laparoscopic tool about a longitudinal axis of the shaft and, further, to rotate the laparoscopic tool about at least a second axis that is orthogonal to the longitudinal axis.

An ablation catheter includes a tubular shaft having a proximal portion and a distal end and an electrode assembly extending from the distal end of the shaft. The electrode assembly includes a plurality of splines each having a spline proximal portion secured to the shaft, and an opposite spline distal portion. Each spline includes an electrically conductive support member partially disposed within an insulating member. The support member has a proximal end portion disposed within the insulating member and a distal end portion extending distally of the insulating member and terminating at a support member distal end. A plurality of sensing electrodes is disposed along each spline. A spline retainer mechanically engages with at least one of the proximal and distal portions of the splines.

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.

A female insertion system is provided. The system includes a conformable insert shaped for insertion into one or more structures of a female human that are associated with at least one of reproduction and one or more erogenous zones; one or more sensors, at least one of the sensors included in the insert, and configured to measure and to relay data, wherein the data is acquired on one of a one-time basis and a multiple-time basis included one of a non-continuous period, a continuous period, and an intermittent temporal period; and a processor configured to: control the insert; generate a treatment for one of the structures of the female human; store the data; and based on the data, automatically affect one or more of the structures via the insert.

The disclosed technology includes an actuator subsystem for a medical probe, including an actuator, a detent, and at least one catch. The actuator is designed to move an end effector between expanded and collapsed configuration. As the actuator is moved, the catches, in conjunction with the detent, provide tactile feedback regarding a position of an end effector of the medical device.

A system includes a medical probe and a processor. The medical probe includes a shaft for insertion into a cavity of an organ of a patient; an expandable assembly fitted at a distal end of the shaft, wherein the expandable assembly has elastic properties; a position sensing element mounted on the distal end of the shaft; and at least one distal position sensing element on a distal end of the expandable assembly. The processor senses relative location of each of the at least one distal position sensing element and the proximal position sensing element; determines deflection of the expandable assembly based on the relative location; relates the deflection to the contact force applied on the expandable assembly; and provides an indication of the contact force on a display.

A multiplanar motion management system to aid in administering non-invasive radiation therapies. The disclosed devices and techniques enable clinicians to accurately monitor the position and motion of the heart with respect to a reference situation of the simulation stage. In addition, information is provided about the respiratory phase of the patient as well as about possible drifts of the anatomical structures. This information can be used by the clinician to interrupt the radiation treatment manually when necessary. The information can also be used to automatically, and in real-time, provide the appropriate gating signals to the therapy machine. The disclosed system may be configured to cover all motion aspects required during a typical radiotherapy workflow with just one device, from patient setup (inter-fraction motion monitoring) to cardiac and respiratory motion monitoring during the treatment (intra-fraction motion monitoring).

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.

Surgical marker systems and methods for delineating a lesion margin of a subject are provided. An example system includes a handheld probe device configured to capture an optical coherence tomography (OCT) image and a processor coupled to a memory. The handheld probe device includes a handheld probe including a fiber-optic probe assembly and a marker assembly. The processor is configured to: segment, by a neural network, each pixels of the OCT into different tissue-type categories; generate one or more feature vectors based at least in part on the segmented pixels; determine, by a one-class classifier, a boundary location in the OCT image between a normal tissue and an abnormal tissue of the tissue structure; and control the marker assembly to selectively create a visible label on a tissue location of the subject, the tissue location corresponding to the boundary location.

Disclosed herein are surgical impact tools and methods of use thereof. The surgical impact tools can include a roller assembly, an impact structure, and a tool holder. The roller assembly can be connected to a motor and include a plurality of rollers supported by a respective roller arm. The impact structure can define a spring and an impact cavity including forward and reverse impact surfaces. The impact structure can include a wall comprising a plurality of thread elements connected to the wall and engageable with the roller assembly. Each of the thread elements can include a pair of helical end surfaces and a pair of axially extending surfaces that are engaged by the plurality of rollers. During use rotation of the roller assembly against the helical ends of the thread elements can cause axial movement of the impact structure to apply a load on the spring and generate impact forces.

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 surgical impact tool and method of use are disclosed. The surgical impact tool may include a roller assembly, an impact structure, and a tool holder. The roller assembly includes a plurality of rollers connected to a motor and supported by respective roller arms. The impact structure may define a spring and an impact cavity including a front impact face and a rear impact face. The impact structure may include a wall with a plurality of thread elements connected to the wall and engageable with the roller assembly. Each of the thread elements may include a pair of helical end faces and a pair of axially extending faces that engage the plurality of rollers. In use, rotation of the roller assembly relative to the helical ends of the thread elements may axially move the impact structure to load the springs and generate an impact force.

Aspects in accordance with the present invention pertain to a prosthesis system comprising a plurality of modules, each of said modules being adapted for separate and appositional fixation thereof to a defective pelvis bone, such that when all the modules have been fixed to the pelvis bone, the modules communicate by a mating interface, thereby forming an acetabular prosthesis that is adapted to reconstruct an acetabulum and / or to augment the pelvis bone.