25 results about "Tissue thickness" patented technology

The invention relates to the technical field of three-dimensional shape modeling and reconstruction, and discloses a bone surface bidirectional three-dimensional reconstruction and editing method and device, computer equipment and a medium, the method comprises the following steps: obtaining a plurality of multi-modal facial skull three-dimensional data, and obtaining a three-dimensional facial grid and a three-dimensional skull grid based on the multi-modal facial skull three-dimensional data, then, a dense ray matching technology of face-skull topological consistent registration is adopted to obtain a dense control point corresponding relation and a topological consistent face grid; based on a preset face-skull structure mapping relation, mapping the face grid and the three-dimensional skull grid which are topologically consistent, and establishing a dense tissue thickness vector field; on the basis of the dense control points and the dense tissue thickness vector field, a bone surface-tissue joint deformable model is constructed to conduct bone surface bidirectional three-dimensional reconstruction, finally bone surface bidirectional three-dimensional editing is conducted on the basis of a bone surface bidirectional three-dimensional reconstruction result, and the precision and individuation level of three-dimensional bone surface reconstruction are remarkably improved.

The utility model discloses a multi-layer tissue thickness detection device convenient to use, which comprises a support frame and a distance measuring instrument arranged on the support frame, the inner wall of the distance measuring instrument is connected with a distance measuring rod in a sliding manner, the top of the distance measuring rod is provided with a pressing grip, and the pressing grip is arranged on the outer wall of the distance measuring instrument through a torsion spring shaft. A tissue fixing assembly is installed on the supporting frame and comprises a supporting column, a rotating plate, a through groove, an iron alloy block, a movable rod and a magnet block, the outer wall of the supporting frame is fixedly connected with the supporting column, the top end of the supporting column is rotationally connected with the rotating plate, the through groove is formed in the rotating plate, and the iron alloy block is fixedly connected with the outer wall of the supporting frame. The inner wall of the rotating plate is slidably connected with a movable rod; according to the paper towel detection device, paper towels needing to be detected can be preliminarily fixed through the paper towel fixing assembly, so that the problems that the paper towels fall off from the detection device and the detection efficiency is influenced are solved, the smooth measurement process is ensured, and the detection accuracy and applicability are improved.

The embodiment of the invention provides a cerebrospinal fluid shunt monitoring system. The cerebrospinal fluid shunt monitoring system comprises a data acquisition unit and a data processing unit, the data acquisition unit is used for acquiring temperatures of upstream and downstream areas of a cerebrospinal fluid shunt tube, and the data transmission component is used for transmitting the temperatures acquired by the temperature detection component to the data processing unit; and the data processing unit is used for processing the temperature acquired by the data acquisition unit so as to determine the flow of cerebrospinal fluid. According to the cerebrospinal fluid shunt monitoring system disclosed by the embodiment of the invention, the quantitative precision can be improved, and the monitoring lower limit reaches 0.01 ml / min; meanwhile, the depth adaptability is achieved, measurement of the subcutaneous tissue thickness of 1-6 mm is supported, and the false detection rate is reduced to tilt; 5%.

A blood vessel closure device is disclosed. The blood vessel closure device comprises: a handle; an extension tube; the clamp head comprises a first clamping assembly and a second clamping assembly, and each of the first clamping assembly and the second clamping assembly comprises a heating wire used for heating and a temperature detection piece used for obtaining the real-time temperature of the heating wire; the heating controller is arranged in the handle, the heating controller is electrically connected with the heating wire and the temperature detection piece, the heating controller can control the heating wire to start heating and stop heating, and the heating controller is configured to obtain the heating rate based on the change of the real-time temperature about time when the real-time temperature rises; after the real-time temperature is larger than or equal to the first threshold value and the temperature rise rate is larger than or equal to the second threshold value, closing completion information is generated. According to the blood vessel closing device provided by the embodiment of the invention, when closing is just completed can be accurately known for blood vessels with different tissue thicknesses, and the stability of the closing effect is ensured.

An ultrasound imaging and backscatter system includes an ICE ultrasound catheter having an ultrasound pMUT transducer array disposed within a distal end of the ultrasound catheter and including a plurality of transducer array elements disposed on a substrate. One end of the catheter shaft is connected to the handle assembly and the other end is connected to the ultrasonic transducer array. The catheter shaft accommodates an electronic flexible cable in communication with the signal trace and directs each of the plurality of transducer array elements to transmit and receive an ultrasound beam, receives at least one signal from the plurality of transducer array elements, and constructs at least one image characterizing one or more tissue components of the scanned object. An ultrasound imaging system is used to measure tissue thickness, tissue scar, and lesion assessment for left atrium, right atrium, left ventricle, and right ventricle tissue wall characteristics and other intracardiac tissue anomalies.

The stapling assembly includes a cartridge, an anvil, and an auxiliary material. The cartridge has rows of staples disposed therein for deployment into tissue. The cartridge includes a knife slot extending through between the rows for receiving a knife to cut the tissue. The anvil is positioned on an opposite side of the cartridge. The auxiliary material is releasably held on the cartridge or the anvil. The auxiliary material can be delivered from the cartridge to the tissue by deployment of the staples. The auxiliary material can have a first shape, and the first auxiliary material portion can exhibit a first expansion behavior in response to receipt of a volume of fluid, and the second auxiliary material portion can exhibit a second expansion behavior in response to receipt of the volume of fluid such that the auxiliary material assumes a second shape. The difference between the first and second expansion behaviors applies different pressures to different portions of the tissue to which the auxiliary material is stapled.

The utility model discloses an electric endoscope anastomat staple cartridge with a function of detecting tissue thickness, which comprises an anastomat body and a staple cartridge seat arranged at the front end of the anastomat body, a detachable staple cartridge is arranged on the staple cartridge seat, a groove is arranged at the front end of the staple cartridge, a pressure sensor capable of moving up and down is arranged in the groove, and the pressure sensor is connected with the stapler body. A spring is arranged between the bottom of the pressure sensor and the groove, and scale marks are arranged on the outer side wall of the pressure sensor. According to the utility model, a proper nail bin can be accurately selected, and the anastomosis effect is ensured.

A method for chemically crosslinking and optionally shaping (including thickness reduction) substantially non-cross-linked tissue, in particular biological tissue, using a permeable material layer. The method can be used in combination with a stepless pressure load / compression on the tissue, so as to always allow fluid transport into and out of the tissue to be treated under the chemical cross-linking; along the lines of drainage. The method can be carried out under different pressure loads / compressions, in particular in order to specifically influence the resulting tissue properties, and, for example, to bring about a homogeneous thickness distribution of the tissue and / or to deliberately and specifically place inhomogeneities, if desired. Furthermore, the method allows the introduction / imprinting of a consistent three-dimensional shape into the tissue to be treated, e.g. of inhomogeneities in the thickness of the tissue.

The invention discloses an electric anastomat with an adjustable closing gap and an adjusting method, and belongs to the technical field of anastomats, the electric anastomat comprises a rack, a nail abutting seat, a nail bin seat, a closing handle and a reset button, the closing handle drives the jaw gap to be adjusted through a connecting mechanism, an adjustable limiting structure is arranged between the reset button and the closing handle, and the adjustable limiting structure is arranged on the rack. The structure comprises a first limiting part on a reset button and a second limiting part on a closing handle, the matched overlapping length of the first limiting part and the second limiting part is adjustable, so that a plurality of closing stroke gears are provided to adapt to the pressing force requirements of different tissues, one end of a nail abutting seat is matched with a sliding special-shaped groove of a nail bin seat through a sliding convex block, rough adjustment of an initial gap is achieved, and the pressing force requirements of different tissues are met. Through combination of mechanical multi-gear adjustment and initial gap presetting, a doctor can accurately select and lock proper squeezing force according to the thickness and characteristics of tissue, the problem that tissue squeezing is uneven due to a single stroke of a traditional anastomat is effectively solved, and the risks of anastomotic stoma leakage and excessive tissue damage are remarkably reduced.

The invention relates to the technical field of anastomats, in particular to an anastomat with a pre-closing function. The forceps are formed by sequentially connecting a forceps head, a sleeve and a handle, the forceps head comprises a nail bin seat and a nail abutting seat which are correspondingly arranged up and down, a titanium nail bin is arranged at the bottom in the nail bin seat, an upper insulating seat is arranged above the titanium nail bin, an upper electrode plate is arranged on the upper insulating seat, and the upper electrode plate is composed of a plurality of upper electrode segments; a lower insulating seat is arranged in the nail abutting seat, a lower electrode plate is arranged on the lower insulating seat, and the lower electrode plate is composed of a plurality of lower electrode segments. The electrode plates are arranged in a segmented mode, a loop for measuring resistance can be formed between the pair of electrode plate segments which are correspondingly arranged up and down, different currents are output according to different tissue thicknesses of all measuring positions, and therefore the tissues of different thicknesses can obtain a good pre-closing effect; and the condition of suturing failure caused by too thick tissues is avoided.

The invention discloses an end effector of a surgical operating instrument and the surgical operating instrument thereof. The end effector comprises a nail bin assembly capable of being opened and closed and an anvil block. And the distance measuring device is configured to measure the distance between the staple cartridge assembly and the anvil block. The distance measuring device comprises a sensing part and a control part. The sensing component is configured to generate a sensing signal used for determining the distance, the sensing component comprises a first element and a second element, the first element is located on one of the staple cartridge assembly and the anvil block, the second element is located on the other one of the staple cartridge assembly and the anvil block, and the first element and the second element are electrically connected. The first element and the second element are arranged to interact to generate the sensing signal. The control component is configured to determine the spacing according to the sensing signal. According to the surgical operating instrument, the accuracy of distance measurement can be improved, and then the accuracy of tissue thickness measurement is improved.

A tissue treatment system configured to ablate a tissue, the system comprising: (a) a clamp assembly comprising a first jaw mechanism and a second jaw mechanism configured to receive and compress a tissue therebetween; (b) a first electrode disposed on the first jaw mechanism and configured to contact the tissue; and (c) a second electrode disposed on the second jaw mechanism and configured to contact the tissue, where the first electrode and the second electrode are configured so that at least one of an ablation energy output of the first electrode and an ablation energy output of the second electrode is automatically adjusted to accommodate variable tissue thicknesses between the first electrode and the second electrode.

The invention relates to the technical field of medical instruments, in particular to an intelligent thoracic surgery auxiliary device which comprises a fixing frame, a mechanical arm is arranged on the fixing frame, the mechanical arm is electrically connected with a control system and comprises a front arm, a rear arm and a wrist, the wrist comprises a wrist body and a wrist support, and driving equipment used for driving the wrist support to axially rotate is arranged in the wrist support. An adjusting assembly and a lighting assembly are arranged in the wrist support, and a retractor is arranged on the outer wall of the wrist support; the adjusting assembly comprises a driving mechanism and a ball screw mechanism, a nut seat of the ball screw mechanism is fixedly connected with a first connecting rod, and the other end of the first connecting rod is fixedly connected with the movable end of the retractor; the lighting assembly comprises a lamp holder and a lighting lamp, and the lamp holder is coaxially and fixedly connected with an output shaft for controlling the wrist support to axially rotate. According to the invention, the retraction function and the self-adaptive illumination are integrated and intelligently linked at the wrist part of the mechanical arm, and the real-time analysis of the tissue thickness and the respiratory rate based on pressure sensing is introduced, so that the illumination angle is dynamically adjusted.

The invention discloses an anorectal anastomat with a thickness detection function, which belongs to the technical field of medical instruments and comprises a nail bin assembly, a nail abutting seat assembly and a percussion mechanism used for driving the nail bin assembly and the nail abutting seat assembly to move relatively to clamp and anastomose tissues. The thickness detection unit is arranged on the nail bin assembly, the feedback mechanism is used for providing feedback information for an operator based on a detection result of the thickness detection unit, and the thickness detection unit can detect the thickness of clamped tissue or physical quantity related to the thickness when the tissue is clamped by the nail bin assembly and the nail abutting seat assembly; the feedback mechanism is in signal connection with the thickness detection unit. The anorectal anastomat has the advantages that the thickness or the state of the tissue can be objectively evaluated in real time in the operation, and the operation parameters are guided or automatically adjusted according to the thickness or the state, so that the operation safety and the anastomosis quality are improved.

The present application relates to surgical device technical field, specifically to a kind of device with intelligent temperature control function for blood vessel closure surgery;Jaws module includes oppositely arranged first jaw and second jaw, and the clamping surface of first jaw and second jaw is provided with a plurality of independent sub-electrodes arranged in axial separation;Sensing module includes temperature sensor, voltage sensor and current sensor connected with each sub-electrode corresponding, further include distance sensor for detecting the thickness of clamped tissue;Energy output module is electrically connected with sub-electrode, for outputting high-frequency current energy to sub-electrode;Control module is electrically connected with sensing module and energy output module respectively, and control module is used to receive temperature, impedance and tissue thickness data collected by sensing module, and according to the data received, the energy output parameter of energy output module to target sub-electrode is dynamically adjusted;The present application can realize intelligent closure, and can better cope with the closure of conventional blood vessels and calcified blood vessels.

The invention relates to an electric anastomat pressure self-adaptive adjusting method based on multi-source perception. The method comprises the following steps that 1, multi-dimensional data are obtained in real time; 2, based on sensor data, four stages of prepressing, main pressing, sewing and releasing are automatically recognized through a state machine driving mechanism, and an independent pressure curve and an adjustment strategy are adopted in each stage; 3, combining a pre-stored organ multilayer structure mechanical model, matching the real-time thickness map with the organization structure model through a genetic algorithm and a particle swarm optimization algorithm, and generating an optimal pressure distribution matrix; 4, driving corresponding actuators to generate different micro-displacements according to the pressure distribution matrix so as to realize differential pressure application of each area of the jaw; and step 5, integrating a low-power-consumption Bluetooth 5.2 / Wi-Fi 6E module to perform wireless communication, and designing a touch display screen to display a pressure distribution map, a tissue thickness profile and a stage state in real time.

The invention discloses a puncture needle positioning assisting system for ultrasonic guided interventional operation, and relates to the field of puncture needle positioning assisting. Tissue thickness variation and tissue texture displacement are extracted to analyze the contact state of the probe and the tissue in the interventional operation process; in a compression stable state, generating a first needle point position sequence; generating a second needle point position sequence in a compression enhancing state or a compression releasing state; comparing the variation difference between the needle body movement variation and the tissue movement variation frame by frame, and generating a main needle point positioning result sequence at the current moment; and calculating the needle point position variation and the distance variation between the needle point position variation and the target region and the risk structure frame by frame, and when the distance variation is greater than a preset distance variation threshold, generating an updated main needle point positioning result sequence. The puncture safety of the ultrasound-guided interventional operation can be improved.

The invention belongs to the technical field of medical treatment, and particularly relates to an ultrasonic scanning robot stabilizing force control method which comprises a force-strain regression model, an edge point serves as a boundary of a to-be-scanned part, and a least square method is used for fitting a plane; calculating the tissue thickness of the to-be-scanned part according to the scanning angle and the distance from the path point to the plane; robot palpation is carried out on a plurality of positions with different thicknesses of the to-be-scanned part, and a force-strain model is obtained through quadratic function fitting according to the measured relation between stress and strain; estimating deformation at each planned path point according to the obtained force-strain model; the planned scan path is corrected using the estimated deformation at each waypoint as a feedforward. According to the method, the elasticity of the mechanical property of the human body part to be detected is fully considered, deformation is different under the same contact force, and the problem of scanning area missing or shielding in large-curvature surface tissue robot ultrasonic scanning is effectively solved by constructing the force-strain regression model.

A surgical robotic system for tissue thickness measurement using a grasping instrument during stapling procedures includes a robotic arm equipped with a grasping instrument operable in a first mode for tissue manipulation and a second mode for measuring tissue thickness. The system utilizes sensors to collect data on jaw position and motor torque during clamping and calculates tissue thickness based on this information. A stapling instrument, controlled by the same or another robotic arm, is then configured to deploy staples according to the measured tissue thickness. The system can select an appropriate stapler cartridge based on pre-set ranges associated with different tissue thicknesses. Additionally, the system may provide feedback to the user through a surgeon console, displaying the recommended stapler cartridge and guiding tissue measurement. This approach aims to improve precision in stapling procedures and optimize patient outcomes.

The invention relates to a blood flow pressure airtight triple feedback type tubular anastomat system, which relates to the technical field of tubular anastomats, and comprises a near-infrared detection module, which is used for evaluating microcirculation blood flow of a target anastomosis area in real time and identifying an ischemic area in a tissue pre-clipping stage; the intelligent pressure sensing module is used for monitoring the pressure distribution of the contact surface of the nail bin and the tissue in real time in the tissue clipping process and estimating the tissue thickness; the dynamic airtightness detection module is used for performing automatic airtightness detection on the anastomotic stoma after anastomosis is completed and the central rod is withdrawn; and the central data processing module comprises a data acquisition and preprocessing unit, a feature extraction and data matching unit and an intelligent judgment unit. Synchronous acquisition, cleaning, matching and comprehensive analysis of three-dimensional data of blood flow, pressure and airtightness are realized through the central data processing module.

In certain examples, an epi instrument an ablation-delivery element and at least one epi magnet secured relative to the ablation-delivery element, and an endo instrument has at least one endo magnet and is configured with the endo magnet to facilitate positioning before ablation. The instruments are moved towards a first target ablation site, and then to a second ablation site, while the at least one ablation-delivery element and the endo instrument are drawn towards one another via magnetic forces and on either sides of tissue structure. The ablation-delivery element and the endo instrument are cooperatively configured to move together via the magnetic forces for the ablation. In more specific examples, the epi-endo system may use the epi-endo magnetic array to maintain a consistent contact force independent of the tissue thickness and / or may use a sensor feedback and controlled energy arrangement to provide feedback concerning the thickness(es) of the tissue area(s) targeted for the ablation.

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.

Systems and methods for planning and assisting orthopaedic surgical procedures include a computing device and a robotic surgical device. The computing device defines a surgical coordinate system relative to a bone of a patient and captures a plurality of point positions in the surgical coordinate system. The plurality of point positions includes a first point position representing a location on a soft tissue surface covering a portion of the patient's bone. The computing device identifies an estimated soft tissue thickness value for each of the plurality of point positions and registers a three-dimensional model of the patient's bone in the surgical coordinate system based on the plurality of point positions and the estimated soft tissue thickness values. The computer system may control the robotic surgical device according to the registered bone model.

This invention discloses an adhesive tissue equivalent compensation membrane for breast cancer radiotherapy, relating to the field of radiotherapy compensation membrane technology. It includes: an adhesive layer on one side that directly contacts the skin; a variable tissue equivalent layer; and an outer protective layer for providing mechanical protection while also ensuring compatibility with radiotherapy equipment. The proposed zoned adjustable microchannel / microcavity filling mechanism can locally adjust the relative electron density and water equivalent according to the radiation path, thereby achieving point-to-point spatial matching with the equivalent tissue thickness required by the radiotherapy plan. This mechanism fundamentally reduces dose perturbations caused by surface geometry irregularities or tissue inhomogeneities, allowing for more reliable reproduction of the dose distribution in the treatment plan during actual irradiation, and reducing the risk of underdose or overdose in near-surface and interface regions.

The application provides an ultrasonic dose parameter determination method and an ultrasonic treatment system, wherein the ultrasonic dose parameter determination method comprises the following steps: detecting the tissue type and the corresponding tissue thickness between the ultrasonic treatment head and a treatment point; determining the temperature rise required for treatment according to the tissue type at the treatment point; presetting a first treatment duration; calculating the output power of the ultrasonic treatment head according to the tissue type, the tissue thickness, the temperature rise, the first treatment duration and an estimated function fitted in advance; and the estimated function represents the relationship between the output power of the ultrasonic treatment head and the tissue type, the tissue thickness, the temperature rise and the first treatment duration. The estimated result obtained by the embodiment of the application is obtained on the basis of the actual detection result of the tissue to be treated, so that the estimated result can be adaptively adjusted according to the actual situation of the tissue to be treated, thereby making the estimated result more in line with the actual treatment requirements, and meanwhile, the ultrasonic dose can be quickly estimated.