8072results about "Trocar" patented technology

A holographic augmented reality ultrasound needle guide system and method includes an augmented reality display such as a headset wearable by a user. The augmented reality display is configured to depict a virtual ultrasound image. The augmented reality display is further configured to allow a user to select a desired reference point on the virtual ultrasound image. The system is configured to depict a holographic needle guide based on the selection of the desired reference point. The system is also configured to adjust a trajectory of the holographic needle guide to avoid intersecting undesired anatomical structures. The augmented reality display is further configured to stamp the holographic needle guide into a selectively locked trajectory and position.

The invention relates to the technical field of medical intelligent image recognition data processing, and discloses an image recognition and data analysis fused ultrasonic venipuncture system which comprises a multi-modal image acquisition module, an intelligent analysis processing module, a real-time navigation execution module and a complication early warning module. By arranging a multi-mode fusion sensing end, when vein puncture real-time navigation is carried out, through ultrasonic image, thermodynamic distribution and optical characteristic three-mode data collaborative registration, the consistency of deep blood vessel recognition is guaranteed, meanwhile, a three-dimensional topological model containing blood vessel elastic parameters is dynamically constructed, blood vessel position deviation can be calibrated in real time in the puncture process, and the accuracy of vein puncture is improved. The accuracy of blood vessel positioning is guaranteed, puncture positioning errors of complex cases are further reduced, whether angle or depth deviation occurs in a puncture path or not is judged in real time by arranging a dynamic navigation end, a compensation path can be planned in real time through a blood vessel elastic characteristic matrix, and it is guaranteed that the angle errors are reduced when a needle body enters a blood vessel.

The invention discloses an endoscope with a built-in grabbing mechanism, and relates to the technical field of medical instruments. According to the technical scheme, the device comprises a clamp assembly, a driving outer pipe and a driving inner wire; the grabbing mechanism further comprises a grabbing mechanism shell, a first moving seat and a second moving seat, wherein the first moving seat and the second moving seat are arranged in the grabbing mechanism shell. The near end of the driving outer tube is connected with the first moving seat, and the near end of the driving inner wire is connected with the second moving seat; when the second moving seat is fixed relative to the grabbing mechanism shell, the first moving seat moves towards the far end direction relative to the grabbing mechanism shell so as to control the clamp assembly to execute the clamping action. According to the invention, the clamping action is carried out while forward extension is carried out, so that high-precision operation is facilitated, and tissues can be accurately clamped; and moreover, the grabbing mechanism is integrated in the endoscope handle, so that accurate single-hand control is facilitated, meanwhile, the clamping action is controlled in a button mode, the human engineering is met, and operation is convenient.

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.

An angled intraosseous access system includes a guide assembly including a guide block and a guide plate. The system can include a driver and a needle assembly rotatably coupled thereto. The guide assembly is configured to align the needle at a predetermined angle relative to the medullary cavity. Advantageously, the angled needle of the intraosseous access system can mitigate pain during infusion and mitigate backwalling.

A dynamic aspiration system includes a connecting tube, a vacuum source, a pressure source, an aspiration catheter, a first controllable valve to control a level of negative pressure provided by the vacuum source, a second controllable valve to control a level of positive pressure provided by the pressure source, pressure sensors, and a controller. The controller modulates the controllable valves to generate pressure pulses, determines, for each of the pressure pulses, a degree of success corresponding to a change in a flow in the aspiration catheter or the connecting tube responsive to the pressure pulse, identifies one or more first pressure pulses determined to have the highest degrees of success, and modulates the controllable valves to generate the first pressure pulses in one or more pressure pulse cycles.

Systems and methods for delivering multiple ocular implants to reduce intraocular pressure are disclosed. The ocular implants can be implanted at multiple sites within a single human eye without requiring removal of the delivery apparatus from the eye. A system for delivering multiple ocular implants can include a plurality of implants, an external housing, and an introducer assembly. The external housing can provide access to an implant singulation actuator and an implant delivery actuator. The introducer assembly can comprise an auto-retracting introducer portion. The delivery apparatus can include an infinite activation mechanism / portion and / or a manual singulation mechanism / portion.

The invention discloses an auxiliary renal puncture device for the nephrology department, and belongs to the technical field of renal puncture, the auxiliary renal puncture device comprises a sickbed, a plurality of supporting legs are fixedly arranged at the bottom of the sickbed, fixing plates are fixedly arranged on the two sides of the sickbed, and second sliding blocks are slidably connected to one sides of the two fixing plates; the breathing frequency and amplitude of a patient are captured in real time through an infrared breathing monitoring module, and displacement data generated by breathing of the kidney are accurately obtained in combination with motion sensing modules such as a lead screw encoder and a driving gear angle encoder. The intelligent control system drives the first stepping motor and the second stepping motor to adjust the position of the portal frame based on six-dimensional force sensor data of the force sensing module, meanwhile, the angle of the puncture needle is adjusted in real time through feedback of a mechanical arm joint encoder, and dynamic compensation of kidney respiratory movement is achieved. According to the mechanism, the puncture deviation caused by breathing can be controlled within the range of + / -0.5 mm, the puncture positioning precision is remarkably improved, and poor sample quality or operation risks caused by breathing movement are avoided.

Provided is an implant apparatus for a continuous glucose monitor. The implant apparatus includes a housing assembly and a driving assembly disposed in the housing assembly. The housing assembly includes an outer housing. The outer housing has an opening at an end of the outer housing. The driving assembly has a locked state in which the driving assembly is fixed relative to the outer housing and a triggered state in which the driving assembly is movable towards the opening. The implant apparatus further includes a trigger. The outer housing includes a guiding channel located at a side wall of the outer housing and extending towards the opening. The trigger is movable along the guiding channel towards the opening and has a first position and a second position relative to the outer housing, to enable the driving assembly to switch from the locked state to the triggered state.

The invention provides a liposuction needle cannula system and method, and the system comprises a cannula assembly which is used for forming a liposuction space at a liposuction part; the liposuction needle assembly is arranged in the sleeve assembly in a sliding and penetrating mode and used for conducting liposuction operation in the liposuction space. According to the technical scheme, tissue damage is reduced, and the fat cell survival rate and the liposuction efficiency are improved.

A catheter system can include a tubular body, and at least one of a targeting system coupled to the tubular body, an expandable member, or a fluid injection port. A method of identifying a bifurcation can include inserting a catheter system into a first vessel, positioning the catheter system at a first location, expanding an expandable member to occlude the first vessel, delivering contrast material so the contrast material pooling proximate to the expandable member, and reviewing a shape of the contrast material in the first vessel under fluoroscopy.

The invention belongs to the technical field of ablation puncture navigation, and particularly relates to an ablation puncture surgery navigation system under AI visual guidance. Through cooperative work of the phase monitoring module, the channel construction module, the needle moving control module, the displacement prediction module and the feedback control module, an intelligent surgical navigation system is constructed, breathing phase information and multi-modal medical image data of a patient can be obtained in real time, and therefore a safe and optimized needle moving path is accurately planned, and the operation accuracy is improved. Meanwhile, through real-time monitoring and quantitative evaluation of parameters such as tissue deformation and pressure distribution in the needle moving process, potential operation risks can be found and corrected in time, smooth operation is ensured, in addition, the system can dynamically adjust the needle moving path and the puncture angle according to the real-time breathing state of a patient, and the operation safety is improved. The accuracy and the safety of the operation are further improved, so that intelligent management and personalized treatment in the ablation puncture operation process are realized.

This application discloses a renal puncture guidance method, system and computer device based on multi-modal fusion, the method comprises: acquiring a medical image sequence of an object to be examined, and performing three-dimensional reconstruction based on the medical image sequence to obtain a three-dimensional reconstruction model; obtaining a slice corresponding to an ultrasonic probe currently in the three-dimensional reconstruction model; displaying a fusion image obtained from a real-time ultrasound image acquired by the ultrasonic probe and the slice in a first region of a puncture guidance interface; acquiring a needle insertion angle of a puncture needle, and displaying a puncture guide line in the fusion image in real time; and displaying the ultrasonic probe model, the puncture needle model and the three-dimensional reconstruction model in real time in a second region of the puncture guidance interface.

The invention relates to the technical field of medical robot systems, and discloses a nerve plexus intelligent positioning anesthesia puncture robot system based on multi-modal fusion, which performs time-space synchronization on ultrasonic image flow and contact force data. The frequency domain analysis module extracts a main peak frequency by using optical flow field frequency domain transformation, and generates a probability mask for marking pulsatile tissues. The viscoelasticity verification module calculates phase lag parameters of visual deformation and contact force, identifies tissue rheological properties and calculates a dynamic damping coefficient. The deformation compensation module calculates a mechanical residual error based on a reference mechanical model, and inversely calculates the mechanical residual error into space deformation displacement of the tissue. The feedback control module combines the probability mask and the deformation displacement to generate a motion instruction. According to the invention, through multi-modal data fusion, precise identification of tiny blood vessels, dynamic identification of tissue attributes and real-time compensation of soft tissue conceding deformation are realized.

Systems and methods are provided for insertion of a medical device into a blood vessel. The system may include a sheath assembly with an introducer sheath and a variable size repositioning sheath. The variable size repositioning sheath may be configured to be adjustable in size in a radial direction and to be inserted into the blood vessel or an expandable introducer sheath. In some aspects, the system may include an intracardiac device such as a blood pump with an elongate catheter.

The invention discloses an accurate acupuncture positioning method under ultrasonic guidance, which relates to the technical field of medical health and comprises the following steps: acquiring a two-dimensional or three-dimensional ultrasonic image of a target area by utilizing ultrasonic image acquisition equipment; the Young modulus of the target area is calculated by measuring the shear wave propagation speed of the tissue of the target area; a sensor module is adopted to monitor the interaction force between the puncture needle and the tissue in real time, and mechanical data are obtained; according to Young modulus and modulus variance obtained through calculation of the shear wave elastography image and mechanical data fed back by a sensor, a time sequence feature vector is constructed; performing dynamic modeling and prediction on the tissue state in the puncture process by using a long-short-term memory neural network; the path offset of the needle head is judged, a correction signal is generated through a PID controller, and the posture or direction of the needle head is adjusted in real time; the problem of artifacts in a traditional ultrasonic image can be solved, more accurate acupuncture path planning is provided, and the method adapts to the change of tissue elasticity in real time.

The invention provides a real-time positioning and puncture track control method and system in a breast duct endoscope operation, and relates to the technical field of medical instruments, and the method comprises the following steps: establishing a real-time coordinate system by collecting an endoscopic image sequence and electromagnetic position data, obtaining lumen three-dimensional depth information by using a light field reconstruction algorithm, and adjusting and calculating stress field distribution by using a grid form. And determining an optimal track based on the puncture safety coefficient, and adjusting compensation parameters in real time by using the optical fiber strain sensing array. Accurate positioning and track control of the puncture instrument in the breast duct endoscope operation are achieved, and operation safety and accuracy are improved.

The invention relates to the technical field of vision assistance, and discloses an anesthesia puncture positioning method and system based on vision assistance, and the method comprises the steps: accurately positioning an anesthesia puncture point through multi-view image fusion, hyperspectral image processing, image preprocessing, illumination equalization, edge enhancement, depth feature extraction and the like. The method comprises the following steps: firstly, constructing an image coordinate system, collecting a plurality of camera images, and obtaining a fused clear image through a designed multi-view fusion algorithm and distance calculation; and in combination with a hyperspectral image fusion algorithm, the image quality is further improved. Then, residual mapping filtering denoising and local histogram enhancement are used for illumination equalization, and the image contrast and edge details are enhanced; a convolutional neural network is adopted, interest point detection is carried out, a Hessian matrix is utilized to describe image second-order changes, and local depth features are extracted. And accurate positioning of an anesthesia puncture point is realized through a weighted soft voting classifier and a dynamic threshold method.

A digital intelligent control system for perceiving a puncture state is characterized in that a sensor signal is converted into a state expression vector of an interaction behavior of a tissue and a puncture tool, and characteristics including tissue elasticity, a fracture threshold value and interface slippage are extracted; a time domain and frequency domain feature mapping mechanism of a nested structure is used, and micro-characterization including piercing micro-shock and tissue layer transition points in continuous puncture is extracted; describing logic mapping between puncture path evolution and a prediction result by constructing a state and intention space diagram relationship; introducing a semantic dynamic weight mechanism, and judging whether the current state is a path expected by a doctor so as to identify a potential deviation puncture or abnormal invasion risk; through real-time identification of key states such as tissue level transition points, piercing micro-shock, interface slippage and the like, the mistaken entry risk of a high-risk area is effectively pre-judged. The system can adjust the puncture angle, speed and torque in advance, and common concurrent problems such as over-puncture, deviation or tissue damage in an operation are avoided.

A tissue resection apparatus is provided which includes an outer tube with a helical coil disposed on a distal end. The coil is provided with a first electrode. A central tube has a distal edge profile comprising one or more surface segments. One of the surface segments includes a second electrode. The central tube is slidably disposed within the outer tube and positioned such that second electrode opposes at least a portion of the first electrode. A cutting tube is slidably disposed within the central tube and includes a cutting edge.

An expandable introducer sheath with an interlock dilator. The present technology provides an expandable sheath with a step feature inside its distal opening, and a dilator with an interlock that includes a catch surface configured to engage with the step feature and resist further relative movement so that the body of the dilator is prevented from exiting the distal end of the expandable sheath. This interlocking engagement may allow the dilator to be used to extend and maintain tension on the expandable sheath during insertion into a patient, and then to be retracted from the expandable sheath by pulling the dilator in the opposite direction. The present technology also provides a dilator hub with a spring mechanism configured to achieve and maintain a desired tension on the expandable sheath and to prevent overextension of the expandable sheath when the dilator is being inserted into the expandable sheath.

An introducer sheath is described. The introducer sheath may include a tubular body. The tubular body may extend from a distal end toward a proximal end. The tubular body may include a lumen. The lumen may at least partially be defined by a wall. A channel may be disposed within the wall. The channel may be configured to receive a guidewire. The tubular body may include an expandable portion expandable to increase a cross-sectional area of the lumen.

The invention relates to the technical field of neurosurgical intelligent operations, and discloses a neuroendoscopic surgery intelligent puncture positioning system based on image navigation, and the system comprises a preoperative modeling module which constructs a preoperative tissue model and a corresponding elastic tensor field based on a three-dimensional medical image of a patient; the image fusion module is used for receiving the data of the preoperative modeling module, collecting intraoperative endoscopic images, predicting the tensor disturbance of tissues through a deep learning model, and feeding back the updated tensor disturbance to the tensor updating module; and the tensor updating module is in two-way communication with the image fusion module and is used for superposing tensor disturbance obtained by processing the intraoperative image with the preoperative tensor. Through fusion of an image navigation technology and preoperative modeling, a three-dimensional positioning frame based on neuroendoscopy operation requirements is constructed, intelligent planning and real-time correction of a puncture path are realized, important brain regions and vascular structures are effectively avoided, intra-operative risks are reduced, and positioning precision and safety are improved.

The invention relates to the technical field of intelligent medical treatment, and discloses a portable blood vessel puncture device and method based on an AI identification B-ultrasonic image, and the method comprises the steps: determining a puncture body position and a to-be-scanned surface; constructing a coordinate system; based on the two-dimensional grid layout, driving the B-ultrasonic puncture integrated equipment to perform matrix scanning in the to-be-scanned surface to obtain and visualize a plurality of static blood vessel sub-images arranged in a matrix and corresponding coordinates of the static blood vessel sub-images; performing image processing by using the plurality of static blood vessel sub-images and the corresponding coordinates thereof to obtain and visualize continuous blood vessel structure image data; an AI recognition model is constructed, the blood vessel structure image data, the multiple static blood vessel sub-images, the corresponding coordinates and preset puncture data serve as input, a puncture strategy is output and visualized, and the puncture strategy comprises target puncture data and a puncture path which are determined based on a coordinate system; and driving the B-ultrasonic puncture integrated equipment to puncture along the puncture path. According to the invention, full automation of blood vessel puncture to establish deep and shallow artery and vein channels is realized, and the puncture success rate and safety are improved.

A catheter system can include a tubular body, and at least one of a targeting system coupled to the tubular body, an expandable member, or a fluid injection port. A method of identifying a bifurcation can include inserting a catheter system into a first vessel, positioning the catheter system at a first location, expanding an expandable member to occlude the first vessel, delivering contrast material so the contrast material pooling proximate to the expandable member, and reviewing a shape of the contrast material in the first vessel under fluoroscopy.

The invention relates to an atrial septum puncture system, and belongs to the technical field of medical instruments. The atrial septum puncture system comprises a conveying sheath assembly, a dilator assembly and a puncture guide wire. The dilator assembly comprises a dilator, a puncture needle and a control handle. The conveying sheath assembly, the dilator assembly and the puncture guide wire are combined into the atrial septum puncture system, puncture operation is more convenient and safer, and the puncture guide wire and a puncture needle do not need to be frequently exchanged in the puncture operation process; according to the dilator assembly, the control handle comprises the moving part and the limiting part, the moving part is fixedly connected with the near end of the puncture needle, the moving part is used for driving the puncture needle to move in the axial direction of the moving part, and a user can control the puncture needle conveniently; the limiting step is arranged on the outer wall of the moving part, and the axial distance between the near end of the limiting part and the limiting step is 0.5-10 mm, so that the distance of a puncture needle extending out of the dilator can be limited, and the safety of puncture operation can be guaranteed.

The invention discloses a thoracoscope minimally invasive cardiac surgery navigation system based on multi-modal image fusion, and the system comprises the steps: constructing a 5D heart digital twin containing an anatomical structure, a soft tissue boundary, metabolic activity and electrophysiological information through fusing preoperative CT, MRI, PET and intraoperative ultrasonic images; real-time dynamic registration is realized by using an electrocardio gating driven biomechanical model; superposing the multi-color coding navigation information to the visual field of the thoracoscope through a wavelength selection type spectroscope; a dynamic risk scoring model is constructed based on the distance, the speed and the tissue vulnerability, and three-level grading intervention is triggered; a miniature force feedback actuator is integrated to realize closed-loop control; and pre-operation virtual drilling and post-operation federal learning optimization are supported. The system remarkably improves the surgical precision and safety, and is suitable for high-difficulty heart minimally invasive surgeries such as mitral valve repair and atrial fibrillation ablation.

A blood pump assembly includes an introducer sheath with a proximal end and a distal end, a pump body which extends within the introducer sheath, and a catheter that interfaces with the pump body and extends proximally though the introducer sheath. In a rest state, the introducer sheath forms an oval cross-section sized to encompass the catheter and a medical device. In a constrained state when the pump body is within the introducer sheath, the cross-section of the introducer sheath is circular. The malleability of the introducer sheath allows larger medical devices to be passed through the introducer sheath, while still allowing other devices to be inserted through the introducer sheath after the pump has been guided through. A perimeter of oval cross-section of the introducer sheath is equal to the perimeter of the circular cross-section of the introducer sheath.

The invention discloses a constipation patient defaecation device and mobile terminal integrated system based on endoscope visualization and air bag assistance, and relates to the technical field of medical instruments, the constipation patient defaecation device comprises a display terminal, a connecting line, an operating handle and a comprehensive pipe, and the two ends of the operating handle are connected with the connecting line and the comprehensive pipe respectively. According to the non-invasive, high-safety and portable constipation patient defecation device, through the integrated design of endoscope real-time visual positioning, air bag auxiliary mechanical defecation and mobile terminal data interaction, the invasive operation pain is reduced, the defecation time is shortened, the complication risk is reduced, and the constipation patient defecation efficiency is improved. The pressure sensor monitors the internal pressure of the air bag in real time and feeds back the internal pressure to the dynamic pressure upper limit module and the mobile terminal in real time, and double protection of a hardware pressure release valve and software pressure limiting is triggered when the pressure exceeds the limit. The problems of high intestinal injury risk, low treatment efficiency, limited application scene and the like caused by operation blindness, function singleness or high invasiveness in the prior art are solved.

The present application relates to a kind of snare cutting knives for endoscope, including proximal handle, tube body assembly, cutting assembly and limiting component;Proximal handle is equipped with limiting sliding slot;The proximal end of tube body assembly is connected with proximal handle, and the distal end of tube body assembly is equipped with insulating protection tube;Cutting assembly includes cutting ring and cutting head, and cutting head is set to the distal end of cutting ring;Limiting component includes sliding part and limiting control wire, sliding part is slidably arranged in limiting sliding slot, and the proximal end of limiting control wire is fixedly connected with sliding part, and sliding part is used to drive limiting control wire axial movement;When limiting control wire moves to the distal end of insulating protection tube, cutting head and insulating protection tube abut each other and are fixed;When limiting control wire exits insulating protection tube, cutting head can continue to move relative to insulating protection tube.