37 results about "Venous puncture" patented technology

The invention discloses a patient venipuncture auxiliary guiding device based on intelligent visual identification, the device is provided with a limb placing plate, the limb placing plate comprises a bottom plate and a silica gel lining plate, and a comfortable placing position can be provided for the limbs of a patient. The linear guide rail is installed on the right side of the top of the limb placing plate. The electric control sliding block can slide on the rail. The Z-axis lifting mechanism is connected with the electric control sliding block, the servo motor drives the lead screw to rotate, and the movable sleeve drives the right-angle type blood vessel imaging mechanism to ascend and descend in the vertical direction. The right-angle type blood vessel imaging mechanism is composed of two supports, a top blood vessel imager and a side blood vessel imager are embedded in the supports, imaging ports face the upper surface and the side face of the limb to be punctured respectively, and the direction and the depth of blood vessels can be clearly shown. In addition, a controller is installed on the side wall of the bottom plate and can control an electric control linear guide rail, an electric control sliding block and a servo motor, medical workers are assisted in accurately finding the blood vessel position, and the success rate of venipuncture is increased.

The utility model discloses a deep vein puncture training simulation device, which comprises a puncture training platform, a dummy man device and a puncture training device, the dummy man device comprises a dummy man body and simulated deep veins distributed in the dummy man body, and each simulated deep vein is filled with simulated blood. The surface of the simulation human body is coated with a transparent observation layer through which all the simulation deep veins can be observed; a body position adjusting device is arranged on the puncture training table; the puncture training device comprises a puncture training needle and a puncture feedback device; teaching and training requirements of different body positions can be met by adjusting the body position of the simulated human body, all simulated deep veins can be observed through the transparent observation layer, and puncture results can be fed back in time when puncture training is conducted through cooperation of the puncture training needle and the puncture feedback device. When puncture fails, failure causes can be known through observation of the transparent observation layer, so that trainees can adjust and correct in time, and accuracy, training efficiency and quality of puncture operation are improved.

The invention provides a puncture method and system based on ultrasonic guidance, and relates to a data processing technology, and the method comprises the steps: constructing a part model corresponding to a puncture part, determining a partition scanning line of the part model, controlling ultrasonic equipment to carry out the segmented scanning of the puncture part based on the partition scanning line, and obtaining a segmented scanning graph; the method comprises the following steps: acquiring segmented scanning graphs, determining the segmented scanning graphs meeting puncture conditions as sub-adaptive graphs, splicing adjacent sub-adaptive graphs to obtain a spliced puncture graph, judging the blood vessel form of veins in the spliced puncture graph to obtain candidate puncture graphs, and selecting the candidate puncture graphs to obtain a puncture guide graph. The puncture point location of the puncture vein in the puncture guide map is determined based on the proximal direction, and accurate positioning during vein puncture can be achieved under ultrasonic guidance.

To provide a blood purification device that can accurately determine whether a venipuncture has been performed correctly in a patient. [Solution] The blood purification device 1 comprises a blood purifier 3 capable of purifying blood, a blood circuit 2 having an arterial blood circuit 21 with an arterial puncture needle 211 attached to its tip and a venous blood circuit 22 with a venous puncture needle 221 attached to its tip, an impedance measuring unit 5 having an oscillator 53 that applies an AC voltage between an arterial electrode 51 provided on the arterial blood circuit 21 and a venous electrode 52 provided on the venous blood circuit 22, and capable of measuring the frequency characteristics of the impedance between the arterial electrode 51 and the venous electrode 52, and a puncture determination unit 72 that determines whether the patient has been properly punctured based on the measured impedance frequency characteristics, and further comprises a frequency range determination unit 70 that determines the frequency range of the AC voltage applied by the oscillator 53 according to the liquid in the blood circuit 2.

A portable vein viewer apparatus may be battery powered and hand-held to reveal patient vasculature information to aid in venipuncture processes. The apparatus comprises a first laser diode emitting infrared light, and a second laser diode emitting only visible wavelengths, wherein vasculature absorbs a portion of the infrared light causing reflection of a contrasted infrared image. A pair of silicon PIN photodiodes, responsive to the contrasted infrared image, causes transmission of a corresponding signal. The signal is processed through circuitry to amplify, sum, and filter the outputted signals, and with the use of an image processing algorithm, the contrasted image is projected onto the patient's skin surface using the second laser diode. Revealed information may comprise vein location, depth, diameter, and degree of certainty of vein locations. Projection of vein images may be a positive or a negative image. Venipuncture needles may be coated to provide visibility in projected images.

The application provides an ultrasound-guided puncture method and system, relates to a data processing technology, and achieves accurate positioning during venous puncture under ultrasound guidance by constructing a part model corresponding to a puncture part, determining a partition scanning line of the part model, controlling an ultrasound device to perform segmented scanning on the puncture part based on the partition scanning line, obtaining a segmented scanning image, determining a segmented scanning image meeting a puncture condition as a sub-adaptive image, performing splicing processing on adjacent sub-adaptive images to obtain a spliced puncture image, performing venous shape judgment on the spliced puncture image to obtain a candidate puncture image, performing optimal selection on the candidate puncture image to obtain a puncture guide image, and determining a puncture point of a punctured vein in the puncture guide image based on a centripetal direction.

The utility model discloses a blood taking needle pressure regulating device, which relates to the field of blood taking needle negative pressure regulation and comprises a vein puncture needle, the output end of the vein puncture needle is fixedly connected with a connecting tube, butterfly wings protruding outwards are formed on the two sides of the outer wall of the connecting tube, the output end of the connecting tube is connected with a hose, and the hose is connected with a valve. The output end of the hose is connected with a butt joint in butt joint with a blood collection tube, a micropore is formed in the output end of the butt joint, a protruding tube protruding outwards is integrally formed on the periphery of the butt joint, an inner cavity of the protruding tube is communicated with an inner cavity of the butt joint, and the outer wall of the output end of the protruding tube is in threaded connection with a connector. And a one-way mechanism is arranged in the connector. Through the arrangement of the connector, the rubber sheet, the needle head and the one-way mechanism, the negative pressure effect of the blood taking needle can be improved, blood can flow more smoothly, external air cannot enter the blood taking needle, and the cleanliness of the blood taking needle is kept.

A portable vein viewer apparatus may be battery powered and hand-held to reveal patient vasculature information to aid in venipuncture processes. The apparatus comprises a first laser diode emitting infrared light, and a second laser diode emitting only visible wavelengths, wherein vasculature absorbs a portion of the infrared light causing reflection of a contrasted infrared image. A pair of silicon PIN photodiodes, responsive to the contrasted infrared image, causes transmission of a corresponding signal. The signal is processed through circuitry to amplify, sum, and filter the outputted signals, and with the use of an image processing algorithm, the contrasted image is projected onto the patient's skin surface using the second laser diode. Revealed information may comprise vein location, depth, diameter, and degree of certainty of vein locations. Projection of vein images may be a positive or a negative image. Venipuncture needles may be coated to provide visibility in projected images.

This invention discloses a pediatric intravenous puncture image analysis system and its analysis method. A puncture trajectory acquisition module is placed on the corresponding skin of the puncture subject, and the puncture object is inserted into the tissue of the puncture subject. An image of the puncture subject with the puncture object inserted into its interior is then acquired. An image calculation module calculates the spatial value between the puncture object and the inner wall of the puncture subject based on the image, obtaining the distance between the puncture object and the tissue. A calculation processing module compares the spatial value of the puncture object inside the puncture subject with a preset value. If the spatial value is less than the preset value, a stimulation signal is issued; if the spatial value is greater than the preset value, the puncture proceeds normally. After receiving the stimulation signal, the warning notification module amplifies the signal in a signal amplifier and amplifies it through a display unit, improving the accuracy of puncture during the operation and preventing perforation of the blood vessel wall.

The application discloses a kind of puncture equipment for assisting venipuncture, including controller, puncture table, appearance mechanism and auxiliary mechanism, one side of puncture table forms puncture area, and puncture area is used to place human hand;Appearance mechanism and auxiliary mechanism are respectively arranged in the side of puncture table forming puncture area, controller is electrically connected with appearance mechanism and auxiliary mechanism respectively, and controller is used to control appearance mechanism, to make the vein blood vessel of human hand in puncture area appear;Auxiliary mechanism is used to obtain the image of hand vein blood vessel appearance and send to controller;Controller is used to mark vein path and puncture point to hand image respectively.The technical scheme in the application proposes that the vein blood vessel of human hand is assisted to appear by appearance mechanism, and the vein path and puncture point after appearance are marked in cooperation with auxiliary mechanism, so that medical staff can be quickly assisted to carry out venipuncture, reduce the dependence of medical staff on personal experience, and improve medical efficiency.

The invention discloses a method and system for assisting venipuncture and related equipment, and relates to the technical field of nursing. The method comprises the following steps: acquiring a subcutaneous vein image of a to-be-identified area; selecting a target vein from all veins in the subcutaneous vein image based on a preset puncture rule, and obtaining size data and feature data of the target vein; determining the model of a puncture tool based on the size data, wherein the puncture tool is used for puncturing the to-be-identified area; determining a puncture path for the target vein based on the feature data and a preset prediction model, wherein the puncture path comprises a puncture point and a needle insertion path; and displaying the target vein, the puncture path and the model of the puncture tool.

Embodiments described herein relate to a shunt for treating an aortic aneurysm and a robotic insertion system for implanting the shunt. In some embodiments, the shunt may include a central portion, an arterial sealing structure, and a venous sealing. In some embodiments, the venous sealing structure may have a lateral length in its deployed configuration, and the arterial sealing structure having a lateral length in its deployed configuration that is greater than the lateral length of the venous sealing structure. The shunt may be advanced robotically in a delivery configuration through a venous puncture site of a vein to access an arterial puncture site of the artery, and then deployed, thereby enabling blood flow through the shunt from the artery to the vein.

The invention discloses an intelligent interactive painless automatic vein puncture method for children and a related device. The method comprises the following steps: uploading an animation video to a puncture robot control system; guiding the child to place the arm in a trigger button area of the video animation playing device, and sensing the placement of the arm of the child through a trigger button; the puncture robot control system carries out preliminary arm position identification according to the initial frame of the animation video; acquiring an image of a child puncture area in real time to identify vein position information of a child; feeding back the vein position information to a puncture robot control system so as to synchronously adjust the video playing progress according to a preset animation key frame sequence; the movement track of the mechanical arm is adjusted in real time according to slight movement of the arm of the child; and after venous indwelling needle puncture is completed, the puncture robot control system controls the mechanical arm to stop acting. In the puncture process, the attention of the child is guided and distracted through the animation video, and the venipuncture experience of the child is remarkably improved.

A phlebotomy aid provides a capability to expand circulatory members for emphasizing venous appearance and accessibility on an epidermal surface. A warming sheath or sleeve extends over a patient forearm for introducing a thermal source adjacent to a patient blood vessel for emphasizing the vein appearance on the epidermal surface. A beating element in the sleeve is powered and controlled by a low voltage circuit for controlled thermal introduction for mitigating discomfort from overheating and eliminating proximity of potentially harmful electrical exposure.

The present disclosure provides methods, systems, devices, kits, and reagents for performing single cell sequencing (e.g., single cell RNA sequencing) from a low volume, capillary blood (or any low volume blood sample which is not obtained from a vein or by venipuncture).

The utility model discloses a central vein puncture double trocar, which relates to the technical field of medical appliances, and comprises a first needle tube, the end part of the first needle tube is provided with a first needle tube head, and the outer side of the first needle tube head is connected with a first mounting head; according to the central vein puncture double-trocar needle, in the vein puncture process, the skin of a patient is punctured through the first needle head, when venous blood is drawn out, the first needle tube is pushed, the end of the first needle head and the end of the second installation head are driven to be positioned through the positioning ring, the second needle tube is drawn back, and the venous blood is extracted out. The sealing piston ring is driven to pump blood into the first needle tube, whether the pumped blood is venous blood or not is judged, if yes, the first needle tube, the second needle tube, the second mounting head and the piston rod are pulled out together, then the guide wire is inserted into the vein blood vessel from the first mounting head along the first needle head, and in the process, the vein blood vessel can be accurately found, so that the vein blood vessel can be accurately extracted. Practicality is high, and repeated puncture injury of a patient is avoided.

The invention relates to the technical field of medical auxiliary instruments, and discloses a venipuncture fixing guider with a locking function, which comprises a fixing assembly, the fixing assembly comprises a bearing plate, the top of the bearing plate is provided with an arm ring assembly, and one end of the top of the bearing plate is provided with a holding assembly. The two ends of the holding assembly are fixedly communicated with the pressing assemblies, the arm ring assembly fixes the arms of a patient, the holding assembly and the pressing assemblies cooperate together to further fix the hand back of the patient and press the epidermis of the hand back to display vein blood vessels, the translation assembly and the angle adjusting assembly are matched, and a blood vessel inserting needle is locked under the assistance of the pressing assemblies. The angle adjusting assembly comprises a fixed static plate, a hinge is installed at one end of the fixed static plate, a needle inserting movable plate is installed at the top end of the hinge, the rotating angle of the hinge is 15-30 degrees, the needle inserting movable plate enables the needle inserting angle to be stably kept at 15-30 degrees under the action of the hinge, and the phenomenon of early-stage puncture errors of infusion exosmosis is avoided.

Disclosed herein are two-piece rapid insertable central catheters (RICCs), introducers therefor, and methods thereof. For example, an introducer and a distal catheter component of a RICC can be combined in an introducer assembly configured to be actuated with a single finger of the same hand while the introducer is held between the thumb and another finger or fingers of the hand. A catheter advancement hub of the introducer includes a manifold coupled to a proximal portion of a distal catheter hub component of the distal catheter component. A guide needle of a syringe of the introducer has a needle shaft extending through the manifold and a distal end of the distal catheter component. An introducer housing is positioned over a syringe tip, the manifold, and the proximal portion of the distal catheter component. The introducer housing of the introducer is configured to provide column strength to a catheter tube of the distal catheter component during venipuncture.

Systems and methods are disclosed that include providing a blood collection tube with a unitarily molded barrel having a cylindrical body portion that defines a barrel cavity, a slot extending longitudinally along the cylindrical body portion, and opposing rails that extend longitudinally along edges of the cylindrical body portion formed by the slot. A dual-ended needle is retained within the barrel. A needle safety device having a pair of channels that receive the rails of the barrel is slidably engaged with the barrel between a first retracted position that exposes a venipuncture end of the needle for selective use of the blood collection tube holder and a second extended position that positions a needle tip shield of the needle safety device at least partially around the venipuncture end of the needle to protect a user from accidental needle sticks after use of the blood collection tube holder.

The present invention discloses a peripheral venous protection stent, comprising a rotary cutting element, an ejection tube, an inner tube, a cannula funnel, a loading sheath, and an outer sheath tube, characterized in that: the rotary cutting element comprises a grinding section, a straight section, and a funnel section; the proximal end of the rotary cutting element is closed on the ejection tube, the rotary cutting element is a closed mesh cage structure, and the distal end of the rotary cutting element is a circular ring and extends to the straight section to form a closed design. The cannula funnel can be used alone or in conjunction with the rotary cutting element. The peripheral venous protection stent can avoid the risk of pulmonary embolism caused by thrombus production due to long-term catheterization during central venous catheterization via peripheral venous puncture; at the same time, it can avoid the risk of thrombus detachment during other interventional surgeries such as peripheral vascular thrombectomy and peripheral stent implantation.

To provide a blood purification device that can accurately determine whether a venipuncture has been performed correctly in a patient. [Solution] The blood purification device 1 comprises a blood purifier 3 capable of purifying blood, a blood circuit 2 having an arterial blood circuit 21 and a venous blood circuit 22, an impedance measuring unit 5 having an oscillator 53 that applies an AC voltage between an arterial electrode 51 provided on the arterial blood circuit 21 and a venous electrode 52 provided on the venous blood circuit 22, and capable of measuring the frequency characteristics of the impedance between the arterial electrode 51 and the venous electrode 52, and a puncture determination unit 72 that determines whether the patient has been punctured normally based on the measured impedance frequency characteristics, and further comprises a voltage control unit 70 that controls the amplitude of the AC voltage applied by the oscillator 53 so that the amplitude of the AC current that flows when the AC voltage is applied from the oscillator 53 is greater than or equal to a preset lower threshold.

An ultrasound-guided vascular puncture and catheterization system is disclosed. This relates to the field of arterial and venous puncture and catheterization. Existing ultrasound puncture frames often employ a cannula-guided design, which only assists puncture and cannot facilitate rapid catheter placement. Their angle adjustment range is relatively fixed. Therefore, this invention provides an ultrasound-guided vascular puncture and catheterization system based on an exoskeleton guide rail. This invention includes a tail-end fixing seat, guide rails, a puncture frame body, a needle holder slider, and an imaging fine-tuning device. The tail-end fixing seat is fixedly connected to the tail ends of two guide rails. A needle holder slider is installed between the two guide rails and slides along the direction of the rails. The heads of the two guide rails have a bent structure, and the bent portion of the guide rail head is inserted into a socket in the imaging fine-tuning device. The imaging fine-tuning device is fixedly connected to the lower part of the puncture frame body. This invention is applied in the field of ultrasound-guided vascular puncture and catheterization.

The invention relates to the technical field of venous indwelling catheter puncture navigation, and discloses a central venous indwelling catheter puncture auxiliary system through peripheral vein puncture. According to the system, an ultrasonic image and a dissection description text are acquired through a data acquisition and verification module; a three-dimensional blood vessel modeling module is used for carrying out spatial registration on the two blood vessels, and a three-dimensional blood vessel model containing semantic information is constructed; the anatomical variation analysis module is compared with a standard map, a variation region is automatically marked, and the puncture feasibility is evaluated; the puncture path planning module generates a target path in the feasible blood vessel model in combination with the instrument parameters, and decomposes the target path into executable steps associated with real-time ultrasonic features and specific operation instructions; and finally, the path conflict detection and navigation control module carries out calibration and sends an instruction to control the puncture auxiliary device to align. According to the method, a closed loop from objective evaluation of multi-source information fusion to programmed step navigation is realized, and the dependence on personal experience and spatial imagination of an operator is reduced.

The present disclosure provides methods, systems, devices, kits, and reagents for performing single cell sequencing (e.g., single cell RNA sequencing) from a low volume, capillary blood (or any low volume blood sample which is not obtained from a vein or by venipuncture).

This invention discloses a multimodal fusion-based image enhancement examination peripheral venous puncture vascular pressure monitoring system, belonging to the field of medical image-assisted technology. The system includes: acquiring patient image data, sensor data, and personalized data; generating image feature vectors, sensor feature vectors, and personalized feature vectors based on preprocessed multimodal data; performing feature interaction on multimodal feature lines; fusing representations through Transformer combined with contrastive learning to generate a fused representation vector; using a vascular pressure tolerance prediction model to predict and assess the maximum tolerable pressure, extravasation risk level, and recommended injection flow rate range at the target puncture site under the current injection flow rate; generating injection suggestions and injection alarms for the target puncture site; and automatically adjusting injection parameters. This invention accurately assesses the personalized safe pressure threshold for patients with different vascular conditions, significantly improving the safety and accuracy of peripheral venous puncture.

The utility model discloses an integrated central venous catheter, which relates to the technical field of central venous catheterization and comprises a catheter main body, a catheter tip is arranged at the front end of the catheter main body, a guide wire cavity, a main cavity and a plurality of side cavities are arranged in the catheter main body, the front end of the guide wire cavity is sealed, a guide wire is inserted in the guide wire cavity, and the side cavities are communicated with the guide wire cavity. A main hole communicated with the main cavity is formed in the front end of the catheter tip end, a needle penetrating hole is formed in the rear position of the lower side of the outer wall of the catheter body, a puncture needle is inserted into the main cavity, and the puncture needle penetrates out of the main hole from the inlet-outlet front end of the needle penetrating hole on the rear side. And the puncture efficiency is improved, so that the rescue success rate is improved, the sterile operation exposure time is shortened, the related infection risk is reduced, puncture complications related to the guide wire are avoided, unnecessary injuries of a patient can be effectively reduced, the occurrence rate of the complications is reduced, and meanwhile potential doctor-patient disputes are reduced.

Systems and methods are disclosed that include providing a blood collection tube with a unitarily molded barrel having a cylindrical body portion that defines a barrel cavity, a slot extending longitudinally along the cylindrical body portion, and opposing rails that extend longitudinally along edges of the cylindrical body portion formed by the slot. A dual-ended needle is retained within the barrel. A needle safety device having a pair of channels that receive the rails of the barrel is slidably engaged with the barrel between a first retracted position that exposes a venipuncture end of the needle for selective use of the blood collection tube holder and a second extended position that positions a needle tip shield of the needle safety device at least partially around the venipuncture end of the needle to protect a user from accidental needle sticks after use of the blood collection tube holder.

The invention relates to the technical field of central venous pressure testing, in particular to a central venous pressure monitoring system and method. The central venous pressure monitoring system comprises an infusion bag, a pressurizing bag, an infusion tube, a pressurizing tube, a first pressure testing element, a second pressure testing element, a three-way element, a four-way element, a central venous puncture catheter and testing equipment, the first pressure testing element and the second pressure testing element are fixed to the left end and the right end, flush with the fourth rib, of the midaxillary line of the human body, and the first pressure testing element is located on the right side of the human body. The first pressure testing element, the second pressure testing element, the first flow controller and the second flow controller are all in communication connection with the testing equipment; and the test equipment obtains the central venous pressure through a formula Po = R * P2 + (1-R) * P1. According to the technical scheme, the pressure measuring process is simple, the labor cost is reduced, and the use experience feeling of a patient is improved.

The invention provides an intelligent positioning and auxiliary puncture device for venipuncture, and relates to the technical field of medical instruments. The intelligent positioning and auxiliary puncture device for venipuncture comprises a base, a binding mechanism is arranged on one side of the base, a moving mechanism is installed on the other side of the base, the moving mechanism comprises a sliding shell fixed to the upper end of the base, a stand column is slidably connected to the sliding shell, a cross beam is slidably connected to the stand column, and the cross beam is fixedly connected to the base. A lifting seat capable of vertically sliding is installed on the cross beam, and one side of the lifting seat is connected with a fine adjustment mechanism. According to the device, accurate adjustment of the spatial position and angle of the needle head is achieved through cooperation of the moving mechanism and the fine adjustment mechanism, the skin is automatically tightened through the tightening mechanism to expose and fix the blood vessel, the needle inserting depth is accurately controlled through the limiting mechanism, and the device effectively solves the problems that the blood vessel slides and needle inserting is too deep; and the definition, the success rate and the operation safety of puncture positioning are obviously improved.

1. Name of the product in this design: Vein Imaging Device (Multifunctional). 2. Purpose of this design: This design is used for locating veins and for venipuncture. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.