25 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.

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 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.

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.

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.

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.

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 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.

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.

The utility model provides a full-transparent PICC (Peripherally Inserted Central Catheter) maximum sterile barrier sterile sheet, which relates to the technical field of medical instruments, and comprises a sterile component, the sterile component consists of a sterile sheet and a visible film, an operation opening is formed in the sterile sheet, and the visible film is arranged in the operation opening; the anti-skid rubber pad is arranged at the bottom of the sterile assembly; thickening cotton is arranged at the bottom of the sterile assembly, due to the fact that in the use process, the rest parts near the puncture need to be observed, medical staff can more visually check the conditions of surrounding blood vessels and the like during puncture work under the action of the visual film, and the medical staff can further fix the visual film under the action of the adhesive tape, so that the medical staff can conveniently use the medical staff. In the using process, the visual film can be folded into the specified width according to the requirement of the operation opening, and the visual film is limited and fixed through mutual adhesion between the adhesive piece and the adhesive sticker, so that displacement of the visual film in the using process is avoided.

The utility model discloses a long-section peripheral vascular stent, which comprises a curved arc and a connecting arc, is used for treating diseases such as peripheral vascular stenosis below knees and the like, and solves the problems that the conventional stent is difficult to lead into peripheral vessels and lacks effective support. The stent has two states of a pressing and holding state and an expansion state with different section radiuses, is implanted into a peripheral vascular affected part in the pressing and holding state, and supports a blood vessel at the affected part in the expansion state. Sufficient radial yield strength is provided through a plurality of supporting rings so as to adapt to the characteristics that the peripheral blood vessel is large in elasticity and thick in outer base layer. And the stent is prepared from a degradable material, so that mechanical support required in the early stage of fusion is met, the stent also has relatively high strength and toughness, and the stent can be degraded in vivo, so that the use safety is greatly improved. Moreover, the pattern of the stent is optimized, so that the circumferential rotation phenomenon of the longer intravascular stent in the expansion process is improved, and the damage to the vascular wall in the implantation process is reduced to the greatest extent.

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 invention provides an intelligent vagus nerve stimulation treatment system which comprises a multi-mode image positioning unit used for acquiring three-dimensional images of the neck vagus nerve and peripheral blood vessels, aligning preoperative high-resolution MRI and enhanced CT angiography through a non-rigid registration algorithm, fusing soft tissue and blood vessel information, and obtaining the three-dimensional images of the neck vagus nerve and the peripheral blood vessels; a deep learning model is used for conducting super-resolution reconstruction and artifact removal processing on the low signal-to-noise ratio area, and a puncture path avoiding blood vessels is generated; the automatic puncture and electrode implantation unit comprises a mechanical arm and a puncture needle arranged on the mechanical arm, the puncture needle is provided with a flexible electrode, the puncture needle carries out puncture according to a puncture path avoiding a blood vessel, and the flexible electrode is pushed to the surface of the vagus nerve and fixed; the closed-loop pulse regulation and control unit is connected with the flexible electrode through a wire and adjusts stimulation parameters in real time based on the physiological signals of the patient. According to the method, the 3D anatomical model is generated through multi-modal image fusion (MRI / CT / ultrasound), a vascular puncture avoiding path is planned, and the risk of vascular injury in an operation is reduced.

The utility model relates to the technical field of medical instruments, and discloses a distal tibia end ligament transposition device for distal tibiofibular syndesmosis ligament, which comprises a cutter head, a bending rod and a cutter handle, and the bending rod is arranged between the cutter head and the cutter handle. The bending rod is arranged between the scalpel head and the scalpel handle, so that a certain angle is formed between the scalpel head and the scalpel handle so as to better adapt to an operation scene, an operator can more quickly and flexibly position a tissue position needing to be cut, important vessels, nerves and the like around a patient are prevented from being accidentally injured during an operation, the operation risk is reduced, and the operation time is shortened; therefore, the operation efficiency and the safety are improved.

Systems and methods are disclosed for providing intraprocedural guidance and feedback during a vascular intervention via intraprocedural Doppler ultrasound performed on one more distal peripheral vessels impacted by the vascular intervention. According to various example embodiments, intraprocedural Doppler ultrasound is performed to detect the changes in flow characteristics and / or anomalous vascular flow signatures of the peripheral vasculature impacted by the intervention, such as the detection of an adverse vascular event. The detected changes in flow characteristics are intraprocedurally communicated to guide and / or assist clinical decision making, and / or employed to autonomously send control signals to interrupt or modify treatment. In other embodiments, intraprocedural guidance and / or feedback is autonomously provided during a neuromodulation procedure via Doppler ultrasound performed on one more peripheral vessels for which blood flow is modulated by the neuromodulation procedure, with the neuromodulation device optionally being controlled according to the detected changes in blood flow.

Provided herein are expandable (e.g., inflatable by fluid) structures incorporating multiple electrodes for optimal circumferential denervation. In some examples, catheters incorporating such expandable structures may be used to ablate nerves in a perivascular space surrounding a vessel (e.g., to effect denervation of at least a portion of the liver, kidneys, pancreas and / or duodenum).