40 results about "Peripheral vessels" patented technology

The invention provides an intraoperative path optimization method and system based on solid tumor preoperative image analysis, and the method comprises the steps: constructing a three-dimensional model of a tumor and peripheral blood vessels and nerves according to a preoperative image, and carrying out the dissection risk marking of the three-dimensional model through a deep learning model, generating an anatomical risk image with risk gradient value distribution; taking the minimum intraoperative bleeding amount and the highest tumor excision rate as a reward function, combining the three-dimensional model, an anatomical risk image and historical similar case data, and simulating multiple operation paths based on an adversarial reinforcement learning algorithm to obtain an optimal operation path; the method comprises the following steps: acquiring the pose, ultrasonic image and fluorescence image of a surgical instrument in real time during surgery, matching the preoperative image with the intraoperative image based on a biomechanical model driven non-rigid registration algorithm, predicting organ displacement, and correcting an optimal surgical path, thereby avoiding accidental injury of key tissues, ensuring that an infiltration area is brought into the surgical path in time, and improving the surgical efficiency. Residues are reduced, and static planning failure is avoided.

The peripheral blood vessel perfusion catheter comprises a catheter body, a head end plugging unit and a side hole plugging unit, the far end of the catheter body is open, and the catheter body is provided with a plurality of side holes; the head end plugging unit comprises a plugging block, an abutting circular ring and a spring connecting the plugging block and the abutting circular ring. The side hole plugging unit comprises a first circular ring, a second circular ring, a flexible connecting cylinder connected with the first circular ring and the second circular ring and a plurality of connecting rods connected between the first circular ring and the second circular ring, the second circular ring is connected with a pushing rod through a connecting frame, and a pull rope is connected between the connecting frame and the plugging block; the abutting circular ring, the first circular ring and the second circular ring are all located in the guide pipe body. The peripheral blood vessel perfusion catheter has good pushing performance, and better thrombus elimination can be achieved.

Exemplary embodiments described herein are directed to a vascular access catheter device with an inline needle, the device having a needle portion that is linearly displaceable relative to a catheter portion, and vice versa, and to methods of performing blood transfer procedures using said device. Retraction of the needle portion relative to the catheter portion allows the catheter of the catheter portion to cover the needle tip during a blood transfer procedure, thereby preventing needle damage to a fistula / graft or peripheral vessel of a patient, as well as possible needle stick injuries to health care workers during removal / disposal of a used device. Because the needle still remains largely within the catheter after retraction, there is no risk of catheter collapse, kinking, etc., during use, which could compromise blood flow during a hemodialysis or other vascular access procedure.

The application discloses a kind of peripheral blood vessel tension measurement method and device based on ultrasound, it is related to the technical field of hemodynamics monitoring.The application collects the ultrasound image and arterial spectrum data of peripheral artery, obtains the pressure gradient variation characteristic parameter of peripheral artery from the ultrasound image of peripheral artery;According to the arterial spectrum data of continuous multiple heart cycles in the time period set according to peripheral artery, the resistance characteristic parameter of the rise and fall of blood flow velocity and the forward blood flow of peripheral artery are obtained;The pressure gradient variation characteristic parameter, resistance characteristic parameter and forward blood flow are used, which comprehensively reflect the peripheral arterial vessel tension situation.The application can use ultrasound to realize non-invasive, convenient and dynamic real-time reflection of peripheral vessel tension, and the hemodynamic changes can be fed back through the peripheral vessel tension waveform diagram, which is beneficial to early warning and helpful for health management and clinical guidance.

The utility model discloses a novel peripheral nerve and blood vessel protection device, and particularly relates to the field of nerve and blood vessel protection for osteotomy, the novel peripheral nerve and blood vessel protection device comprises a metal sheet, first limiting grooves are symmetrically formed in the middles of the two ends of the metal sheet, a handle rod is fixedly connected to one side of the top of the metal sheet, and a barrier strip is fixedly connected to the other side of the top of the metal sheet. According to the utility model, the metal sheet is inserted into the gap between the osteotomy bone surface and the peripheral blood vessels and nerves, so that the osteotomy bone surface can be separated from the peripheral blood vessels and nerves, and after the osteotomy tools such as a fret saw, an electric swing saw and the like cut off the bone surface, the metal sheet is touched firstly and osteotomy is stopped; by means of the first limiting groove, an osteotomy fret saw can be conveniently inserted, so that the position of the osteotomy fret saw is kept stable, the position of an osteotomy surface is not prone to sliding in the osteotomy process, and accurate osteotomy is achieved.

The invention discloses a peripheral vessel interventional catheter fixing device which comprises a mounting mechanism, a catheter clamping mechanism used for fixing an interventional catheter is arranged on the side face of the mounting mechanism, an adjusting mechanism is arranged between the catheter clamping mechanism and the mounting mechanism and used for steering adjustment of the catheter clamping mechanism, and the catheter clamping mechanism is connected with the mounting mechanism through the adjusting mechanism; a driving seat is slidably connected to the inner side of the mounting mechanism, the end, away from the pipe clamping mechanism, of the adjusting mechanism is connected with the driving seat, and a driving assembly used for driving the driving seat is further arranged in the mounting mechanism. According to the peripheral vessel interventional catheter fixing device, the interventional catheter can be fixed through the mounting mechanism and the catheter clamping mechanism, the driving seat can be driven to move through the adjusting knob, then the adjusting mechanism is driven to adjust the position of the catheter clamping mechanism, and meanwhile the adjusting mechanism can achieve steering adjustment of the catheter clamping mechanism; and the fixing requirements of the peripheral vascular intervention catheter in different use scenes are met.

An embodiment includes a process for treating an abdominal aortic aneurysm (AAA) endoleak with a shape memory polymer (SMP) foam device. First, a bifurcated stent graft is placed within the aneurysm while a micro guidewire is positioned within the aneurysm for future catheter access. Second, after placing the iliac graft extension, a catheter is introduced over wire to deliver embolic foams. Third, embolic foams expand and conform to the aneurysm wall. Fourth, embolic foams create a stable thrombus to prevent endoleak formation by isolating peripheral vessels from the aneurysm volume.

The invention discloses an artificial intelligence-assisted pulmonary blood vessel image omics acquisition method and device, a medium and a product, and relates to the technical field of medical image processing, and the method comprises the steps: firstly, based on an input original file, in response to the operation of a user, reconstructing a lung model and a pulmonary blood vessel model; based on the pulmonary blood vessel model, generating a first simplified model of each pulmonary artery model blood vessel branch and a second simplified model of each pulmonary vein model blood vessel branch in response to operation of a user; and finally, based on the lung model, the pulmonary vessel model, the first simplified model and the second simplified model, generating peripheral vessel distribution parameters of pulmonary artery and pulmonary vein and radiomics characteristic parameters of the peripheral vessel distribution parameters, generating radiomics characteristic parameters of the whole vessel, calculating a vessel center line, and grading the vessel. The technical problem of how to improve the yield of information acquired by pulmonary blood vessel imaging omics is solved.

The utility model discloses an improved needle knife which comprises a needle handle, a needle body and a knife head which are sequentially connected, the knife head is formed by integrally connecting two U-shaped knife heads in the same direction, a connecting wall in the middle of the two U-shaped knife heads is shorter than non-connecting walls on the two sides of the two U-shaped knife heads, a double-peak wave-shaped outline is formed, a cutting edge is arranged along the double-peak wave-shaped outline, and the cutting edge is round and blunt. The cutting head is in the double-peak wave shape, the releasing area is large, the cutting edge is round and blunt, the cutting area can be enlarged through sliding, damage to surrounding blood vessels and nerves is small, therefore, the number of incisions is reduced, and the pressure reduction effect is good.

The invention discloses a peripheral vascular intervention thrombectomy catheter with a far-end embolism protection structure, and relates to the technical field of vascular thrombectomy catheters. The peripheral vessel interventional thrombectomy catheter with the far-end embolism protection structure comprises a catheter body, an embolism protection assembly is arranged at one end of the catheter body, a thrombectomy assembly is arranged on the surface of the catheter body, a transmission assembly is arranged in the catheter body, and the embolism protection assembly comprises a protection pipe network fixedly installed on one side of the catheter body. Through the transmission assembly, one end of a lead screw can drive one side of a filter screen plate to move towards the interior of the protective pipe network through rotation of the lead screw in the use process, so that the protective pipe network is expanded, meanwhile, an air bag piece can be inflated, and after a guide pipe is placed in the use process, the air bag piece can be inserted into the protective pipe network. The preparation time of catheter operation is shortened, the catheter is convenient to operate, thrombectomy and protection operations of the catheter are improved, and the use convenience of the catheter is improved.

The invention relates to a method for improving safety of laparoscopic cholecystectomy based on an FMEA model and a related device. The method comprises the following steps: constructing the FMEA model containing a plurality of initial elements according to a laparoscopic cholecystectomy process in a daytime ward; acquiring real-time gallbladder images of the gallbladder and surrounding tissues through a laparoscope system, and identifying a plurality of key anatomical structures of the real-time gallbladder images; the key anatomical structure comprises a gallbladder duct, a gallbladder artery, a common hepatic duct, a common bile duct, a right hepatic artery, a Calo triangular area and peripheral blood vessel distribution; inputting the key anatomical structure, the preoperative evaluation information of the patient and the surgical operation record into an FMEA model, and prompting a risk level and a high-risk anatomical region to an operator in a visual manner; the preoperative evaluation information of the patient comprises liver function, blood coagulation function, BMI and past abdominal operation history; the surgical operation record comprises the electrocoagulation use frequency, the traction force and the surgical time. According to the method, the FMEA model is combined with the laparoscopic cholecystectomy, so that the safety and efficiency of the operation are improved.

Provided are an extravasation detection device, extravasation detection system, and program, which are capable of more easily detecting extravasation even when detection in a peripheral blood vessel is difficult. An extravasation detection device 1 acquires, from a blood flow measurement device 4, a measurement value related to a blood flow state in the heart H of a patient P with an indwelling needle inserted at a predetermined site 7 of the body before and after administration of an infusion solution trough the indwelling needle, determines whether or not the infusion solution is correctly administered on the basis of the acquired measurement value, and outputs a determination result.

The utility model relates to an intervertebral disc fibrous ring opening device which comprises a driving part and a fibrous ring opening assembly arranged at one end of the driving part. The fiber ring opening assembly comprises a fiber ring containing part and a fiber ring fixing part arranged in the fiber ring containing part, one end of the fiber ring containing part and one end of the fiber ring fixing part are both fixedly connected with the driving end of the driving piece, and the other end of the fiber ring fixing part extends out of the fiber ring containing part. According to the intervertebral disc fibrous ring opening device, the fibrous ring can be fixed through the fibrous ring fixing part, so that sliding between the intervertebral disc fibrous ring opening device and the fibrous ring can be avoided, and meanwhile the intervertebral disc fibrous ring opening device can be fixed through the fibrous ring opening structure formed by the fibrous ring containing part and the fibrous ring fixing part. According to the intervertebral disc opening device, the intervertebral disc fibrous ring is opened, so that a regular opening is obtained, the regular opening is not prone to damaging surrounding blood vessels, the visual field under an endoscope is clear, and follow-up operation in the intervertebral disc is facilitated.

An embolization microcatheter including an elongated main body and a distal section, the distal section comprising an off-setting portion and a winding portion, wherein the winding portion comprises about half a loop of a three-dimensional spiral, such that a longitudinal axis of the winding portion is offset and / or disposed at an acute angle relative to a longitudinal axis of the elongated main body, and wherein the off-setting portion is disposed at an angle of between about 60° and about 120° degrees relative to the longitudinal axis of the elongated main body.

The application belongs to the technical field of first-aid appliances, and particularly relates to an emergency patient wound cleaning device, which comprises a cleaning liquid tank, a suction pump fixed to the upper surface of the cleaning liquid tank, a liquid inlet pipe fixed to the output end of the suction pump, and a cleaning mechanism installed on one side of the cleaning liquid tank. The input end of the suction pump and the interior of the cleaning liquid tank are connected through a water pipe. The cleaning mechanism can clamp and fix the wound part of the patient's leg, avoid secondary damage to the blood vessels, tissues, nerves and the like around the wound of the patient in the subsequent cleaning process, clean the wound part of the patient's leg, flush the bloodstains, sand or other foreign matters such as dirty soil in the wound, prevent bacterial pollution caused by long-time exposure of the wound from aggravating the wound infection, quickly and uniformly extract the bloodstains and cleaning liquid generated in the wound cleaning process, and prevent the bloodstains and cleaning liquid from splashing out and causing pollution of the rescue area.

The utility model relates to the technical field of medical instruments, in particular to a peripheral blood vessel balloon dilatation catheter which comprises an outer tube, a connecting seat, an inner tube, a circular ring supporting block and a blood circulation pipeline, the outer tube is provided with a balloon, the connecting seat is connected to the end, away from the balloon, of the outer tube, the connecting seat is provided with an inflation inlet, and a guide wire penetrating inlet is formed in the connecting seat. The inner tube is coaxially and fixedly connected to the interior of the outer tube, the inner tube is connected with the guide wire penetrating opening, the outer wall of the inner tube and the inner wall of the outer tube are provided with inflation pipelines, one end of the filling pipeline is communicated with the balloon, the inflation opening is communicated with the other end of the filling pipeline, and the inner tube is sleeved with the circular ring supporting block; one end of the annular supporting block abuts against the inner wall, located at one end of the balloon, of the outer tube, the outer wall of the annular supporting block abuts against the inner wall, located at the outer tube of the balloon, of the outer tube, one end of the blood circulation pipeline is communicated with the outer wall of the outer tube, and the other end of the blood circulation pipeline penetrates through the annular supporting block to be communicated with the outer wall, close to one end of the balloon, of the outer tube. And the operation risk of the patient is reduced.

The present invention relates generally to medical compositions, methods and devices / systems for treating vascular diseases. More particularly, the invention relates to medical methods, devices and kits for distributing drug to surrounding vascular tissue to treat neointimal growth. More specifically, the described invention is intended to overcome shortcomings of existing treatments for peripheral artery disease (PAD). Devices and methods of the present invention are specifically intended to treat patients with PAD involving the infrapopliteal (tibial) arteries, e.g., patients having a clinical indication for treatment below the knees (e.g., claudication and / or critical limb ischemia (CLI), and patients with complex disease states, for reducing one or more of morbidity; treatment complications in treated patient populations, a reduction in target lesion revascularization (TLR) rates; and a reduction in patients populations requiring any type of leg amputation.

A method for detecting biometric parameters includes the steps of performing a bone graft procedure on at least one vertebra of a spine, providing at least one biometric sensor at the at least one vertebra, the sensor measuring at least one parameter selected from the group consisting of pressure, tension, shear, relative position, and vascular flow in an adjacent surrounding, and measuring the at least one biometric parameter at the vertebra with the sensor.

The invention relates to computer implemented methods for determining the presence or risk of disease and / or vascular state in a subject. The method comprises (a) using data gathered from a computer tomography (CT) scan along a length of two or more blood vessels to determine: (i) a value for the radiodensity and / or one or more radiomic features of the perivascular tissue surrounding each blood vessel or segment thereof; (b) using the value for the radiodensity and / or one or more radiomic features of the perivascular tissue surrounding each blood vessel or segment thereof to determine the presence of disease and / or vascular state in each blood vessel, or segment thereof; and (c) generating an output value based on the number of vessels or segments thereof with disease and / or vascular state that indicates the subject's presence or risk of disease and / or vascular state. The invention also relates to computer program products, systems and machine learning or statistical modeals for performing the methods of the invention. Also disclosed is methods of training said machine learning or statistical models, and related systems.

To provide a photoacoustic imaging apparatus and a photoacoustic imaging method capable of generating a simple and highly reproducible three dimensional photoacoustic image of a surface layer peripheral blood vessel for the entire foot of a subject.SOLUTION: A light source probe unit is provided so as to be movable along a two dimensional coordinate system in which a longitudinal direction and a vertical direction of an apparatus main body are axes orthogonal to each other in a tank of the apparatus main body, and the light source probe unit is driven and controlled so as to slide along outer surfaces of a sole side and a back side of a foot of a subject in a non-contact manner with reference to a height position of a limb end holding portion.SELECTED DRAWING: Figure 1

Systems and methods are disclosed herein for providing guidance and feedback during an operation during a vascular intervention by Doppler ultrasound during the operation on one or more distal peripheral vessels affected by the vascular intervention. In accordance with various exemplary embodiments, Doppler ultrasound is performed during operation to detect flow characteristic changes and / or abnormal vascular flow characteristics of the interventional-affected peripheral vascular system, such as detection of adverse vascular events. The detected blood flow characteristic changes are communicated during operation to guide and / or assist in clinical decisions, and / or are used to automatically send control signals to interrupt or adjust treatment. In other embodiments, guidance and / or feedback during the operation is automatically provided during the neuromodulation operation via Doppler ultrasound of one or more peripheral vessels whose blood flow is modulated by the neuromodulation operation, and the neuromodulation device may be optionally controlled based on detected changes in blood flow.

Provided are an extravasation detection device, an extravasation detection system, and a program that are capable of more easily detecting extravasation even when detection in peripheral blood vessels is difficult. An extravasation detection device 1 comprises: a first measurement value acquisition unit 11 that acquires a first measurement value related to a blood flow state during administration of an infusion from an indwelling needle 5 at a first measurement position B1 in a blood vessel L of a patient P in the vicinity of an insertion position A1 where the indwelling needle 5 has been inserted; a second measurement value acquisition unit 12 that acquires a second measurement value related to a blood flow state before and after administration of the infusion from the indwelling needle 5 at a second measurement position B2 corresponding to the first measurement position B1; a determination unit 14 that determines whether or not the infusion is normally administered by comparing the first measurement value acquired by the first measurement value acquisition unit 11 with the second measurement value acquired by the second measurement value acquisition unit 12; and a determination result output unit 15 that outputs a determination result by the determination unit 14.

The invention provides a novel pulsating pump which comprises a bottom plate, a motor, a working shaft, a connecting piece and a fixing block, and the motor and the fixing block are directly or indirectly fixedly connected to the bottom plate. The connecting piece is matched with the fixing block, so that the pressure adjusting section does not fall off from the connecting piece and the fixing block when the motor works; a coronary artery blood vessel remodeling catheter, a peripheral balloon dilatation catheter, a peripheral blood vessel remodeling catheter, an intracranial laser balloon dilatation catheter, a drug coating balloon dilatation catheter, a photodynamic balloon catheter, a mastoid balloon catheter, a constraint type balloon dilatation catheter and a spinous process balloon can be made. Expansion and contraction of balloon catheters such as a drug delivery balloon catheter are regularly changed within a period of time, and therefore the treatment effect is better achieved.

The invention relates to the technical field of medical instruments, in particular to secondary injury prevention blocking forceps for aortic dissection surgery, which comprise a handheld cylinder, a first wrench and a second wrench are arranged on a holding part of the handheld cylinder, and a clamping head is detachably connected to the head of the handheld cylinder. The clamping head is provided with two elastic clamping pieces capable of elastically deforming, the two elastic clamping pieces are in an arc-shaped state when clamping a blood vessel, and the suspended ends of the two elastic clamping pieces are close to each other after capturing a target blood vessel, so that the blood vessel is locked between the two arc-shaped clamping arms; therefore, the situation that the surrounding blood vessels are affected due to the fact that traditional blocking forceps are opened by a large angle is avoided, the surrounding blood vessels can be prevented from being affected, then damage to the surrounding blood vessels is avoided, then the two elastic clamping pieces are gradually converted into the straight clamping arms, and the blood vessels are gradually and stably clamped to block blood flow in the blood vessels.

The invention discloses an ultrasonic probe fixing frame for nerve block, and relates to the technical field of medical instruments. The moving rod is mounted in the bottom frame in a sliding manner; the adjusting mechanism is mounted between the two sides of the top end of the moving rod; a probing mechanism; through cooperative work of the telescopic frame, the telescopic driving assembly, the adjusting frame, the first ultrasonic probe, the second ultrasonic probe and the guide block, the ultrasonic probes are stably fixed with the adjusting frame as the core, the telescopic driving assembly drives the telescopic frame to flexibly move, the adjusting frame accurately adjusts the angle and the distance between the two ultrasonic probes, and the ultrasonic probes can be stably fixed. And the low-frequency curved-surface probe and the high-frequency linear probe are combined, so that accurate three-dimensional space positioning is realized, the complex spatial relationship between cranial nerves and surrounding blood vessels and bones can be comprehensively displayed, synchronous scanning in different directions can be realized, a puncture path can be monitored in real time, accidental injury to the blood vessels or nerves is avoided, and serious complications such as bleeding and infection are prevented.

A fluidly connected plasma catheter system comprise a power connection system, a first longitudinal member, and a second longitudinal member. the second longitudinal member configured to insert into the peripheral vessel through the lumen of the first longitudinal member, the second longitudinal member extending along a second length between a second proximal end and a second distal end comprising a tip electrode, wherein the second longitudinal member is freely movable within the lumen of the first longitudinal member and creates a bipolar arrangement between the distal electrode and the tip electrode to deliver energy while remaining electrically coupled to the energy source by a conductive fluid in a fluid connection system in the connection hub.

This invention discloses an AI-powered intelligent embolization assistance system for arteriovenous malformations of the brain and spinal cord. By integrating an AI-powered intelligent embolization assistance subsystem and an image-guided platform, it matches 3D-DSA angiography images with internally stored hydrodynamic models of different embolization materials to obtain a three-dimensional vascular architecture map of the lesion and surrounding vessels. Through AI calculation, it completes virtual path planning, simulating the embolization path, three-dimensional course, and embolization range. Based on this, it provides real-time navigation of the microcatheter during EVT, intelligently following its path. After the procedure, it re-acquires 3D-DSA angiography images, performs multimodal image fusion, and assesses the embolization status, the three-dimensional relationship with surrounding structures, and potential related complications. This system enables preoperative planning and simulation of the interventional embolization path and range, and real-time navigation, tracking, and assessment of the lesion during the procedure, effectively improving the efficacy of EVT.