12 results about "Tissues types" patented technology

The invention discloses a bone-like osteoma microwave ablation thermal injury assessment method based on all-optical parameters, which comprises the following steps: respectively considering thermal injury models of cortical bone and cancellous bone under different microwave ablation conditions by constructing a simulation model conforming to bone tissue characteristics; according to the method, construction of an incomplete P5 approximation model is proposed, bone tissue all-optical parameter anti-construction research based on steady-state radiance is carried out, the accuracy is high, calculation is convenient, temperature parameters and biological tissue all-optical parameters are analyzed in a combined mode, a tissue thermal damage model of the temperature and tissue all-optical parameters is established through theoretical research, and due to the characteristics of different bone tissues, the tissue thermal damage model can be used as a tissue thermal damage model of the temperature and tissue all-optical parameters. The tissue types are considered in the thermal damage model, and effective bone tissue thermal damage factors are designed based on different tissues, so that the evaluation accuracy is ensured.

The invention provides a laparoscope data processing method and system, relates to the technical field of data processing, and aims at outputting and interacting laparoscope data based on forms such as natural language processing, interacting according to the requirements of doctors, realizing preoperative identification of operators, and improving the accuracy of laparoscope data processing. The system is automatically converted into image modes for habits of an operator, including brightness, saturation, focal length and the like. The blood vessel or the ureter can be recognized based on the fact that the special spectrum can be combined with typed cells or tracers in the blood vessel or the ureter, blood vessel damage can be avoided as much as possible by recognizing the blood vessel, intraoperative bleeding is reduced, and the ureter damage probability can be reduced by recognizing the ureter. The method can obtain the abdominal cavity image collected by the laparoscope, determines the tissue characteristics of each tissue catheter based on the abdominal cavity image, the tissue characteristics comprise the tissue trend and the tissue diameter, determines the organ information of the recognition object, can perform point location recommendation and determine the tissue type according to the data collected by the laparoscope, and improves the judgment efficiency and accuracy of the user.

A surgical instrument, system and method for adjusting a compression force applied by a surgical instrument are disclosed. The method includes determining tissue impedance of tissue in contact with an end effector of the surgical instrument, determining a tissue type based on the tissue impedance, selecting a first energy modality to deliver to the surgical instrument, generating a first signal waveform based on the first energy modality, selecting a second energy modality to deliver to the surgical instrument, generating a second signal waveform based on the second energy modality, outputting the first and second signal waveform to deliver energy to the end effector, and adjusting a compression force applied by the end effector by changing a size of a gap between the tissue and the clamp arm based on a proportion of the first signal waveform to the second signal waveform.

A method includes receiving one or more radiological images of an anatomy of a patient. The method also includes identifying a boundary of different tissue types in the anatomy of the patient based at least partially upon the one or more radiological images. The method also includes identifying one or more regions within the boundary. The one or more regions include a lung region. The method also includes identifying healthy tissue and COVID-19 tissue in the lung region. The method also includes quantifying an extent of the COVID-19 tissue in the lung region by comparing an amount of the COVID-19 tissue in the lung region to an amount of the healthy tissue in the lung region. The method also includes classifying the extent of the COVID-19 tissue in the lung region into one or more of a plurality of COVID-19 classes.

A surgical instrument, system and method for adjusting a compression force applied by a surgical instrument are disclosed. The method includes determining tissue impedance of tissue in contact with an end effector of the surgical instrument, determining a tissue type based on the tissue impedance, selecting a first energy modality to deliver to the surgical instrument, generating a first signal waveform based on the first energy modality, selecting a second energy modality to deliver to the surgical instrument, generating a second signal waveform based on the second energy modality, outputting the first and second signal waveform to deliver energy to the end effector, and adjusting a compression force applied by the end effector by changing a size of a gap between the tissue and the clamp arm based on a proportion of the first signal waveform to the second signal waveform.

The application discloses a soft tissue intelligent recognition method and device and a soft tissue cutting and sealing device.The ultrasonic knife trigger controls the jaw to clamp the soft tissue, and an initial current I0 is released at the same time.The jaw clamps the tissue, and the trigger stroke and the current passing through the soft tissue at different moments are collected in the process that the soft tissue is extruded and deformed.According to the Kelvin model, the elasticity modulus E and the viscosity coefficient η of the soft tissue are inversely solved.A stroke sensor is installed on the trigger to capture the rotation angle of the trigger.A monitoring button is designed to manually control the micro current to be turned on immediately after the operation starts, and the micro current can also be automatically turned on as soon as the handle trigger is started.According to the linear relationship between the current and the stress of the soft tissue, the elasticity modulus and the viscosity coefficient are inversely solved based on the Darwin model, and then the tissue type is recognized, so that the operation gear of the ultrasonic knife does not need to be selected artificially, and the safety and efficiency of the operation are improved.

The invention relates to a catheter for locally treating tissue, in particular tumour tissue or other undesirable tissue types, in intravascular and intraluminal spaces for insertion into a vessel for the duration of treatment. The catheter comprises a flexible, cylindrical body (2) having a first lumen (14.1) for receiving a guidewire for guiding the catheter (1), a second lumen (14.2), and at least one third lumen (14.3) for separately introducing chemical and / or biological therapeutic agents into the tissue, wherein the cylindrical body (2) has radio-paque features. The catheter further comprises a conductive structure (6) for generating pulsed electric fields, wherein the conductive structure (6) comprises at least a first and a second structural element (8.1, 8.2). In addition, a first and a second electrical supply line (10.1, 10.2) are provided and insulated from each other. The invention further relates to a catheter system.

An ablation system includes an ablation generator, catheter, and a closed-loop ablation processor operably coupled thereto. The processor receives baseline tissue properties, such as baseline tissue impedance, tissue thickness, tissue anatomical location, tissue type, catheter-tissue contact force, catheter stability against the tissue, and baseline electrogram signal morphology. The processor also receives waveform parameters for the generator. Using the baseline tissue properties and the waveform parameters, the processor determines whether pulsed field or radiofrequency ablation therapy should be delivered and computes corresponding target ablation metric(s), such as a target ablation index. The processor then commands the generator to deliver ablation therapy to the tissue and monitors lesion formation using intra-therapeutic tissue properties (and waveform parameters) to compute intra-therapeutic ablation metric(s) and comparing the intra-therapeutic ablation metric(s) to the target ablation metric(s). Ablation therapy ceases when the intra-therapeutic ablation metric(s) satisfy the target ablation metric(s).

The invention discloses a surgical aspirator capable of intelligently adjusting suction force, and belongs to the field of medical instruments. A surgical aspirator capable of intelligently adjusting suction force comprises an aspirator main body, one end of the aspirator main body is provided with a connector used for being connected with a negative pressure source, the other end of the aspirator main body is provided with an aspirator head used for extracting body fluid and secretions, the aspirator head is made of non-metal soft materials, two suction ports are formed in the aspirator head, and the aspirator head is connected with the connector. The suction ports comprise a side suction port and a positive suction port; the device further comprises an intelligent sensing system and an intelligent suction adjusting system. The problem that the suction force of an existing aspirator is difficult to adjust according to different tissue types is solved, the tissue types are accurately recognized by monitoring the physical characteristics of the tissues in an operation area in real time, the working states of the side suction opening and the positive suction opening of the aspirator head are automatically switched according to the recognized tissue types, and the operation efficiency is improved. The suction force can be automatically adjusted, so that the risk of tissue damage caused by improper suction force is reduced.

The invention discloses electrosurgical equipment and a working method thereof, the electrosurgical equipment comprises a host end and an instrument end, the instrument end comprises a jaw and a sensor module, the jaw is used for sealing tissue, and the sensor module comprises a Hall angle sensor and a pressure sensor; the host end comprises a closing detection module, an organization estimation module and a prediction engine; wherein the closing detection module is used for obtaining the current clamping tissue thickness Hcurrent and the current jaw clamping force Fcurrent of the electrosurgical equipment according to data detected by the Hall angle sensor and the pressure sensor; the tissue estimation module is used for judging the tissue type according to the current clamped tissue thickness Hcurrent and the current jaw clamping force Fcurrent; the prediction engine calculates the optimal excitation duration Tpred of the electrosurgical equipment according to a prediction model formula, the prediction model formula is Tpred = a * Hcurrent + b * Fcurrent + c * (Hcurrent * Fcurrent) + d, and in the formula, a, b, c and d are empirical coefficients obtained through experimental data fitting according to tissue types. According to the design of the invention, intelligent judgment and prompt of excitation duration and opportunity can be realized, and the operation precision and the safety and success rate of tissue cutting and sealing are improved.

The application relates to a simulation breast ultrasound scanning method and system based on force tactile feedback, the method comprising: acquiring a patient breast image, constructing a three-dimensional geometric model of a breast and internal structures thereof, and giving corresponding physical parameters to different tissue types; in the dynamic deformation process of the simulation breast soft tissue under external force, an implicit Euler time integral scheme is used to convert a dynamic problem into an energy minimization problem about node positions at the next time, wherein deformation energy of the breast tissue is divided into a stretching energy item and a volume change item, the stretching energy item is accurately solved through an optimization integrator, and the volume change item is approximately solved using a compliance constraint method and a Gauss-Seidel iteration method; and the solved deformation energy is converted into tactile information to simulate pressure changes and tissue rebounding feelings when a probe contacts with tissue in a real ultrasound examination. Compared with the prior art, the application can provide strong force and tactile feedback, enhances immersion and training effects.

An ablation system includes an ablation generator, catheter, and a closed-loop ablation processor operably coupled thereto. The processor receives baseline tissue properties, such as baseline tissue impedance, tissue thickness, tissue anatomical location, tissue type, catheter-tissue contact force, catheter stability against the tissue, and baseline electrogram signal morphology. The processor also receives waveform parameters for the generator. Using the baseline tissue properties and the waveform parameters, the processor determines whether pulsed field or radiofrequency ablation therapy should be delivered and computes corresponding target ablation metric(s), such as a target ablation index. The processor then commands the generator to deliver ablation therapy to the tissue and monitors lesion formation using intra-therapeutic tissue properties (and waveform parameters) to compute intra-therapeutic ablation metric(s) and comparing the intra-therapeutic ablation metric(s) to the target ablation metric(s). Ablation therapy ceases when the intra-therapeutic ablation metric(s) satisfy the target ablation metric(s).