54 results about "Tissue thickness" patented technology

The invention discloses an AI simulation method and system for facial cosmetic plastic surgery, and the method comprises the steps: for a specific region with high feature complexity, generating a feature subset containing fine feature distribution through high-performance node distribution processing, combination with an adaptive feature extraction algorithm, and dynamic adjustment of extraction frequency and segmentation granularity; on the basis, a three-dimensional reconstruction algorithm is adopted to dynamically adjust the splicing weight, particularly, the splicing precision is improved and a high-precision three-dimensional model is generated for an area with relatively thin tissue thickness, and finally, a vivid effect simulation diagram is obtained through rendering parameter adjustment driven by a user demand and preferentially rendering a height modification area. According to the method, through adaptive parameter adjustment and fine processing, the modeling precision and rendering efficiency of the complex biological characteristic data are remarkably improved, and the method is suitable for medical images, biological recognition and other scenes.

An ultrasound imaging and backscatter system comprises an ICE ultrasonic catheter having an ultrasonic pMUT transducer array disposed within a distal end of the ultrasonic catheter, and comprises a plurality of transducer array elements arranged on a substrate. A catheter shaft is connected at one end to a handle assembly and at other end to the ultrasonic transducer array. The catheter shaft houses an electronic flex cable which is in communication with a signal trace, and directs each of the plurality of transducer array elements to transmit and receive ultrasound beams, receive at least one signal from the plurality of transducer array elements, and construct at least one image characterizing one or more tissue component of a scanned object. The ultrasound imaging system is used for measuring tissue thickness, tissue scarring and lesion assessment for left and right atrium and ventricle tissue wall characterization and other intracardiac tissue abnormalities.

The invention relates to the technical field of catheter mapping and ablation, and discloses a pulsed electric field ablation control device. The pulsed electric field ablation control device comprises: an impedance detection part for performing fine impedance detection on a contacted tissue by using an electrode on an ablation catheter; the tissue thickness determining part is used for determining the thickness of the tissue according to the change of the detected impedance under different contact conditions; and the ablation control part is used for controlling the ablation catheter to carry out pulsed electric field ablation output according to the determined thickness of the tissue. According to the focusing electrode, the impedance of the contact tissue and the tiny impedance change under different contact conditions can be accurately detected, so that the tissue thickness can be calculated, proper ablation parameters can be matched, and complications caused by too large ablation parameters are avoided. In addition, according to the pulse electric field ablation control technology, the ablation depth can be determined, and excessive ablation is avoided.

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 invention relates to the technical field of medical apparatus and instruments, in particular to an intelligent suturing device for gastrointestinal anastomosis, which comprises an anastomat main body used for moving in an intestinal tract, and a clamping titanium nail and a compression assembly for forming girdling are arranged on one side of the anastomat main body; the anastomat is characterized in that the anastomat body comprises a holding handle used for a doctor to hold and move, one side of the holding handle is communicated with a conveying pipe, and a rotating mechanism used for continuously adjusting the rotating angle is arranged in the conveying pipe; the pressing assembly comprises a fixed end and a movable end, the end, away from the holding handle, of the conveying pipe is fixedly connected with the fixed end, a telescopic mechanism used for being connected with the movable end is arranged in the conveying pipe, and an adapting mechanism used for adjusting the height of the titanium nail is arranged in the conveying pipe. On the premise of reducing leakage of the anastomosis surface, the nail height change can be automatically adjusted according to the tissue thickness, the stable effect of the anastomosis surface is guaranteed, and wound healing is facilitated.

A surgical stapling instrument includes first and second jaws, a sensor assembly, and a controller. The controller detects that the jaws have been actuated from closed position to open position and back to closed position, and derives, from a first signal from the sensor assembly, a current distance between the distal ends of the jaws. Upon determining firing immediately preceding actuation of the jaws, the controller adjusts a camber adjustment value based on the current distance. Upon determining no firing immediately preceding actuation of the jaws and closing of the jaws with tissue grasped, the controller adjusts the tissue thickness measurement based on the camber adjustment value and controls the next firing based thereon. Upon determining no firing immediately preceding actuation of the jaws and that closing of the jaws with no tissue grasped therein, the controller adjusts the camber adjustment value based on the current measurement of the distance.

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 invention discloses an electric anastomat clamping and cutting state detection system and method and a storage medium, a plurality of clamping thickness detection units are arranged on a nail abutting seat, detection of tissue thickness data can be achieved, the clamping thickness detection units are arranged outside an anastomosis nail forming groove, and the clamping thickness detection units are arranged outside the anastomosis nail forming groove. The cutting resistance detection unit is arranged on the side face of the tool bit, the cutting resistance can be detected, the cutting resistance detection unit is arranged on the side face of the tool bit, and the influence on cutting of the tool bit can be effectively avoided. Compared with a traditional clamping pressure display mode, the device has the capacity of detecting the clamping thickness and the cutting resistance in real time, automatic protection can be achieved according to detected tissue thickness data and cutting resistance data, the requirement for operators is greatly lowered, and the device is suitable for large-scale application and popularization.

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%.

An end effector of a surgical instrument may be equipped with a staple cartridge selection system, including a load sensing cartridge insertable into a channel of a cartridge jaw of an end effector for assembly therewith, the load sensing cartridge including: a body having a proximal end portion and a distal end portion; an elongated channel within the body between the proximal end portion and the distal end portion; a load sensor disposed within the elongated channel of the load sensing cartridge, the load sensor configured to sense a parameter indicative of a tissue thickness when tissue is clamped between an anvil jaw and the cartridge jaw in the clamped configuration; and a visual indicator configured to display a visual indication based on the parameter sensed by the load sensor.

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.

This application relates to the field of catheter mapping and ablation technology, and discloses a pulsed electric field ablation control device. The pulsed electric field ablation control device includes: an impedance detection part that finely detects the impedance of the tissue contacted by the electrode pair on the ablation catheter; a tissue thickness determination part that determines the thickness of the tissue according to the changes in the detected impedance under different contact conditions; and an ablation control part that controls the ablation catheter to output pulsed electric field ablation according to the determined thickness of the tissue. The focusing electrode of this application can accurately detect the impedance of the contacted tissue and the minute changes in impedance under different contact conditions, thereby calculating the tissue thickness and matching appropriate ablation parameters to avoid complications caused by excessive ablation parameters. In addition, the pulsed electric field ablation control technology of this application can determine the method and catheter for ablation depth, avoiding over-ablation.

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.

A surgical stapling device includes a tool assembly and a drive assembly. The tool assembly includes an anvil and a cartridge assembly having a channel member and a staple cartridge. The drive assembly includes a working member assembly having a first beam that is engaged with the anvil and a second beam that is engaged with the cartridge assembly to control the spacing between the anvil and the staple cartridge in the clamped position. The spacing between the first beam and the second beam of the drive assembly is adjustable depending on the thickness of tissue being treated to change the size of the tissue gap defined between the staple cartridge and the anvil during clamping and firing of the stapling device.

The application relates to a surgical instrument end effector cartridge and a surgical stapler applying the same, comprising a staple body for sealing and cutting tissue, characterized in that each staple body comprises a base, a head extending upward from the base and at least one leg connected to the base, each leg can be in an expanded state to fix a suture to tissue at a cutting line, thereby realizing that the staple body can drive the suture to stitch the tissue at the cutting line while sealing the tissue at the cutting line, compared with the prior art, the surgical instrument end effector cartridge can seal and stitch the cut tissue layers together near the end of the tissue layers, thereby increasing the reliability of the stitched tissue, in addition, the application further provides a surgical stapler applying the same, the surgical stapler can realize clamping and cutting tissue while stitching the tissue, so as to fix the suture to the tissue at the cutting line.

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.

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 adjustable telescopic ultrasonic knife comprises a handle, a main sleeve is arranged on one side of the upper end of the handle, a secondary sub-sleeve is arranged at the end, away from the handle, of the main sleeve, a primary sub-sleeve is arranged at the end, away from the main sleeve, of the secondary sub-sleeve, a primary piston rod is arranged in the primary sub-sleeve, and a secondary piston rod is arranged in the primary piston rod. A second-stage piston rod is arranged at one end of the first-stage piston rod, a micro hydraulic cylinder is arranged at the other end of the second-stage piston rod, and one end of the first-stage sub-sleeve extends into the second-stage sub-sleeve. The first-stage piston rod and the second-stage piston rod can stretch out in a sectional mode, medical staff are allowed to dynamically adjust the exposure length of the tool bit according to the tissue thickness, the distance between the tool bit and the handle can be adjusted according to needs, the stretching-out distance of the tool bit can be controlled in a multi-stage mode according to needs, instrument replacement is avoided, and automatic adjustment can be achieved according to the depth of an operation view; the operation time is shortened, a single instrument is used instead of multi-specification ultrasonic knives, and the cost is saved.

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 staple cartridge is disclosed. The staple cartridge can comprise a cartridge body comprising a deck and a bottom surface opposite the deck. The staple cartridge can comprise a plurality of staple cavities, wherein each staple cavity extends into the cartridge body from the deck to the bottom surface. Additionally, a plurality of wells can be defined into the staple cartridge from the deck to a lowermost surface of the well. A plurality of staples can be removably positioned in the staple cavities. The staple cartridge can comprise a tissue thickness compensator releasably secured to the cartridge body, wherein the tissue thickness compensator comprises a compensator body and a plurality of extensions extending from the compensator body into the wells, wherein at least one extension is compressed within one of the wells. Each well can surround at least one staple cavity and / or can extend between at least two staple cavities.

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 discloses an intelligent thoracic-breast approach endoscopic thyroid surgery retractor, which relates to the technical field of medical instruments and comprises a rod body, a handle, a retractor head end, a retractor tip end, a retracting and releasing mechanism, a bendable rod, a telescopic mechanism and an angle adjusting mechanism. According to the surgical retractor, through the arrangement of the retracting and releasing mechanism, the retractor tip end can be hidden in the retractor head end, after skin is punctured, the retractor tip end can be retracted through the first rotary knob, other tissue is prevented from being punctured accidentally in an operation, and through the arrangement of the bendable rod and the telescopic mechanism, the radian and the length can be adjusted according to needs; the traction requirements of different tissue thicknesses and directions are met; through the arrangement of the angle adjusting mechanism, the angle of the head end of the drag hook can be flexibly adjusted by taking a piercing point as a fulcrum, so that a wider traction range is realized; the rod body and the drag hook head end are both made of alloy materials, the surfaces of the rod body and the drag hook head end are coated with anti-fatigue coatings, and it is guaranteed that bending or deformation is not prone to occurring under high traction force.

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.