479 results about "Catheter insertion" patented technology

The invention provides a catheter tip accurate positioning method and system based on electrocardiogram guidance. The method is applied to a control module of a catheter tip accurate positioning device. The method comprises the following steps: acquiring a standard electrocardiogram corresponding to a to-be-positioned patient, and constructing P-wave baseline features of the patient according to the standard electrocardiogram; when the catheter is inserted into a preset area of a patient, electrocardiogram detection information sent by an electrocardiogram sensing module of the device is obtained and analyzed, and waveform information of P waves is obtained; obtaining first change information and second change information according to the P-wave baseline characteristics and the waveform information so as to obtain first position information corresponding to the catheter; if it is confirmed that the P wave is obviously increased when the catheter is inserted according to the P wave variability information and it is confirmed that the distance between the catheter and the right atrium is smaller than the preset distance according to the first position information, pushing of the catheter is stopped, and accurate positioning of the catheter tip is completed. The accuracy of catheterization is improved through electrocardiogram guidance, and the safety and accuracy of overall operation are improved.

A method of inserting a catheter into a vasculature of a patient can include disposing the catheter into a housing. The housing can include a blood flash indicator, having a syringe plunger fixed to the housing and a syringe barrel slidable relative to the syringe plunger. The method can further include positioning the housing adjacent the vasculature, inserting a needle into the housing and through a lumen of the catheter until a distal tip of the needle extends from a distal end of the catheter, and accessing the vasculature via the distal tip of the needle. The method can further include sliding the syringe barrel in a proximal direction relative to the syringe plunger to create a vacuum in a lumen of the needle to thereby draw blood through the lumen of the needle and into the syringe barrel.

Intermittent catheters in simple-to-use assemblies or systems thereof facilitate cleanliness before and after use. In an example, an intermittent-catheter system can include an intermittent catheter and packaging enclosing the intermittent catheter therein to maintain sterility of the intermittent catheter in an unused state of the intermittent-catheter system. The packaging can include a flexible packaging body and a packaging cover. The packaging body can be configured to hold a catheter tube of the intermittent catheter therein. The packaging cover can be configured to reveal a funnel of the intermittent catheter when an uncovering operation is performed. The uncovering operation can reveal an adhesive patch on either the packaging body or the packaging cover for adhering the packaging to a vertical surface for removal of the intermittent catheter from the packaging for catheterization. The packaging can be further configured for resealing the intermittent catheter therein subsequent to the catheterization.

Methods of treating a central airway obstruction (CAO), benign airway stenosis, asthma, chronic obstructive pulmonary disease (COPD), or an airway tumor in a human subject, methods of treating chronic rhinosinusitis (CRS) or chronic rhinosinusitis with nasal polyps (CRSwNP) in a human subject, methods of treating a eustachian tube disorder in a human subject, and devices and systems for performing the methods. A method of treating a central airway obstruction (CAO), benign airway stenosis, asthma, chronic obstructive pulmonary disease (COPD), or an airway tumor in a human subject includes inserting a drug-coated balloon catheter into a target site in a trachea, mainstem bronchus, bronchus intermedius, lobar bronchus, segmental bronchus, or sub-segmental bronchus, wherein the balloon is coated with a coating layer including the therapeutic agent and one or more additives. The therapeutic agent includes paclitaxel, sirolimus, or a derivative thereof. The method includes inflating the balloon to dilate the airway and deliver a therapeutic agent to the airway wall. The method includes deflating the balloon. The method also includes withdrawing the balloon catheter from the target site.

Disclosed herein is a urinary catheter generally configured for self-deployment. The catheter includes a closed volume within the lumen of the catheter containing a lubricant. The proximal end and the distal end of the catheter tube are coupled with a handling member disposed along the catheter tube to define a compact packaging shape of the catheter tube including one or more loops. The closed volume is breached by separating the proximal and distal ends away from the handling member in a single step via simultaneous application of separating forces to the proximal and distal ends. The handling member includes a pull ring for applying an oppositely directed separating force to the handling member. The catheter includes an inlet section configured of insertion into the patient and an inlet collar is slidably coupled with the inlet section. where in the inlet collar serves as a guide during insertion of the catheter.

The invention discloses a real-time monitoring method and device for a cyclopharyngeal muscle catheter balloon dilatation, and the method comprises the steps: constructing a to-be-detected field domain model of the cyclopharyngeal muscle, and carrying out the finite element analysis to solve a potential distribution and sensitive matrix; the method comprises the following steps: injecting multi-frequency sine excitation current into a to-be-measured field domain of the cyclopharynx muscle catheter balloon dilatation, collecting boundary response voltage, performing multi-frequency synchronous demodulation to obtain a voltage amplitude and a phase, and inverting a conductivity change value distribution diagram under various reference frequencies by combining a sensitive matrix; and in combination with the obtained result, performing at least one operation of determining a catheter insertion position and determining a balloon dilatation state so as to obtain a real-time monitoring result of at least one of the catheter insertion position and the balloon dilatation state, and outputting the real-time monitoring result of the at least one of the catheter insertion position and the balloon dilatation state. The invention aims to provide non-invasive, non-radiation, real-time and accurate monitoring for the catheter balloon of the peripharyngeal muscle catheter balloon dilatation, accurately measure the catheter insertion position and the balloon dilatation state, and improve the safety of the peripharyngeal muscle catheter balloon dilatation.

A robotic catheter system and methods for implementing corrective actions during use thereof. A method comprises: providing a catheter that has one or more bendable segments and a catheter tip, inserting the catheter into a bodily lumen and navigating the catheter through the lumen along an insertion trajectory while an actuation unit applies an actuation force to the one or more bendable segments; recording a navigation parameter in relation to the insertion trajectory while the catheter is moved through the lumen, displaying, on a display, a graphical representation of the navigation parameter relative to a threshold value indicative of a location along the insertion trajectory where a navigation error of the catheter can occur or has occurred; and outputting to the display an interactive user-guide showing one or more than one corrective actions that can be taken to correct and / or prevent the navigation error.

Disclosed herein are clot treatment systems including mechanical thrombectomy devices and clot treatment devices, and associated devices and methods. In some embodiments, a method of removing clot material from a blood vessel of patient includes inserting a catheter to proximate the clot material within the blood vessel while radially constraining a clot treatment device and an embolic protection device within the catheter. The method can further include moving the catheter proximally to deploy the clot treatment device at least partially distal to clot material within the blood vessel, and then moving the catheter further proximally to deploy the embolic protection device at least partially proximal to the clot material. The clot treatment device can include one or more relief features configured to release captured clot material if the force on the clot treatment device exceeds a threshold.

Disclosed herein is a catheter, which in some embodiments includes a distal section configured to enter a skin insertion site. The distal section can include a tapered junction having one or more dilation structures configured to dilate the skin insertion site. The distal section can further include a distal portion extending from a distal end of the tapered junction, the distal portion having a diameter smaller than a proximal portion of the catheter. In combination, the tapered junction, the one or more dilation structures, and the specific actions of the user urging the catheter into the insertion site can result in an improved fit of the catheter in the insertion site.

Disclosed herein are clot treatment systems including mechanical thrombectomy devices and clot treatment devices, and associated devices and methods. In some embodiments, a method of removing clot material from a blood vessel of patient includes inserting a catheter to proximate the clot material within the blood vessel while radially constraining a clot treatment device and an embolic protection device within the catheter. The method can further include moving the catheter proximally to deploy the clot treatment device at least partially distal to clot material within the blood vessel, and then moving the catheter further proximally to deploy the embolic protection device at least partially proximal to the clot material. The clot treatment device can include one or more relief features configured to release captured clot material if the force on the clot treatment device exceeds a threshold.

Disclosed herein are clot treatment systems including mechanical thrombectomy devices and clot treatment devices, and associated devices and methods. In some embodiments, a method of removing clot material from a blood vessel of patient includes inserting a catheter to proximate the clot material within the blood vessel while radially constraining a clot treatment device and an embolic protection device within the catheter. The method can further include moving the catheter proximally to deploy the clot treatment device at least partially distal to clot material within the blood vessel, and then moving the catheter further proximally to deploy the embolic protection device at least partially proximal to the clot material. The clot treatment device can include one or more relief features configured to release captured clot material if the force on the clot treatment device exceeds a threshold.

Intermittent catheters in simple-to-use assemblies or systems thereof facilitate cleanliness before and after use. For example, an intermittent-catheter system can include an intermittent catheter and packaging enclosing the intermittent catheter therein to maintain sterility of the intermittent catheter in an unused state of the intermittent-catheter system. The packaging can include a flexible packaging body and a packaging cover. The packaging body can be configured to hold a catheter tube of the intermittent catheter therein. The packaging cover can be configured to reveal a funnel of the intermittent catheter when an uncovering operation is performed. The uncovering operation can reveal an adhesive patch on either the packaging body or the packaging cover for adhering the packaging to a vertical surface for removal of the intermittent catheter from the packaging for catheterization. The packaging can be further configured for resealing the intermittent catheter therein subsequent to the catheterization.

The device for catheterization includes a catheter sheath support mounted on the catheterization device and holding a catheter sheath, a carriage supporting a guide needle, and a connector for removably engaging the catheter sheath support to the carriage. When the carriage is disengaged from the connector, it translates along an insertion axis of the guide needle independent of the catheter sheath support. An actuator controls the separation of the carriage from the catheter sheath support at a uniform speed in response to disengagement of the connector. The translation and separation may be automated. In response to detection of a vessel wall puncture, the carriage is automatically released from the catheter sheath support and retracts along the insertion axis at a uniform speed relative to the catheter sheath support, and the catheter sheath is automatically advanced along the insertion axis at a uniform speed into the target vessel while the carriage is retracted.

A device for catheterization includes a catheter sheath support mounted to a catheterization device and holding a catheter sheath, a carriage supporting a guide needle, and a connector to removably engage the catheter sheath support to the carriage. The carriage translates along an axis of insertion of the guide needle independent of the catheter sheath support when disengaged from the connector. An actuator controls separation of the carriage from the catheter sheath support at a uniform velocity in response to disengagement of the connector. Translation and separation may be automated. In response to detection of the vessel wall puncture, the carriage automatically releases from the catheter sheath support and retracts along the axis of insertion at the uniform velocity relative to the catheter sheath support, and the catheter sheath automatically advances into the target vessel along the axis of insertion at the uniform velocity while the carriage retracts.

Apparatus and methods for deactivating bronchial nerves and ablating smooth muscle extending along a bronchial branch of a mammalian subject to treat asthma and related conditions. An ultrasonic transducer (11) is inserted into the bronchus as, for example, by advancing the distal end of a catheter (10) bearing the transducer into the bronchial section to be treated. The ultrasonic transducer emits ultrasound so as to heat tissues throughout a relatively large impact volume (13) to a temperature sufficient to inactivate nerve conduction and ablate smooth muscle but insufficient to cause rapid ablation or necrosis of the surrounding tissues. The treatment can be performed without locating or focusing on individual bronchial nerves or smooth muscle.

An intermittent catheter package including a plurality of components and a catheterization tray configured to facilitate a catheterization procedure. The plurality of components include a urinary catheter fluidly connected to a urine-drainage bag and a sampling-port access device configured to fluidly connect to a urine-sampling port of the urinary catheter or the urine-drainage bag for aseptic collection of one or more urine samples.The catheterization tray includes at least a first compartment, a second compartment, a third compartment, and a fourth compartment. The second compartment is connected to the third compartment Step-by-step surface instructions for performing the catheterization procedure are incorporated into the catheterization tray.

The present disclosure relates to a catheter insertion apparatus including a hollow needle body connected to a needle hub, and a catheter that removably fits over the needle body. The needle body has a sharp distal needle tip for piercing a blood vessel wall. An internal flow passage of the needle hub is in fluid communication with the hollow needle body. An elongated housing is connected to the needle hub and includes a lumen in fluid communication with the internal flow passage of the needle hub. An integrated guide assembly is slidably mounted to the housing and is operable to move between a retracted position and an extended position. A flashback chamber is operable to receive a continuous flow of blood before, during, and after movement of the guide assembly between its retracted and extended positions. A safety guard may provide protection from the sharp needle tip.

Techniques and technologies for vascular access devices are disclosed. A representative vascular access device includes an introducer having a shaft that includes a tip, a first aperture disposed proximate to the tip, a second aperture spaced apart from the tip, and an optical fiber disposed within the shaft that conveys light for emission from the first and second apertures. A catheter is disposed about the introducer and has a catheter distal end positioned between the first and second apertures. As the tip is advanced into the blood vessel, light emitted through the first aperture is diminished, indicating that the tip has entered the blood vessel. When light emitted through the second aperture is diminished, the practitioner knows that the catheter distal end has entered the blood vessel.

The introducer needle may include a needle shaft (144), a sheath (142) covering the needle shaft, and a needle hub (146) around a proximal portion of each of the needle shaft and sheath. The needle shaft may include a needle slot (150) extending from the proximal portion of the needle shaft to the distal needle tip, and the needle tip may include a bevel having a tip bevel (152) and a heel (154). The needle shaft may include opposing needle slot walls (230) that a) face each other and are parallel or oblique to each other, or b) face toward or away from the bottom of the needle slot. Additionally or alternatively, the opposing needle shaft walls may be parallel to each other. The sheath covering the needle shaft may seal the needle slot below it, except for a sheath opening at the proximal portion of the sheath.

Catheter clips and catheter insertion assemblies including such catheter clips facilitate sterile catheterization technique, thereby reducing the risk of catheter-related bloodstream infections and increasing positive patient-centered outcomes. In an example, a catheter clip can include a pair of lever arms mated to each other. Each lever arm of the pair of lever arms can be bilaterally asymmetric but identical to the other lever arm of the pair of lever arms. An elastomeric band can be over a jaw end portion of the catheter clip. A catheter retainer can be coupled to a handle end portion of the catheter clip. The catheter retainer can be configured to hold a catheter connector of a catheter such that at least a proximal portion of the catheter remains in a sterile field when the catheter clip is clipped onto a sterile drape that establishes at least a portion of the sterile field.

A catheter insertion device is provided as an external applicator attachable to a medicine delivery device. The medicine delivery device has an internal module therein that comprises an insertion needle hub and needle, and a catheter hub and catheter. An external applicator comprises a drive and spring that drive a drive pin into the medicine delivery device to force the needle hub and catheter hub downward until the catheter hub locks in the downward position and the needle hub returns into the external applicator. An automatic release feature automatically disengaged the external applicator from the medicine delivery device when insertion is complete.

A method for accessing a blood vessel using a catheter insertion device. The catheter insertion device includes a housing, a needle, a catheter, a guidewire, and a thumbwheel. The thumbwheel is rotatably fastened at a front end of the housing and accessible through an opening in the housing. The guidewire is coupled to the thumbwheel such that an axis of rotation of the thumbwheel is perpendicular to the guidewire and rotation of the thumbwheel advances the guidewire through the lumen of the needle. The method includes preparing the catheter insertion device, inserting a tip of the needle and distal end of the catheter into a blood vessel, advancing the guidewire out of the lumen of the needle into the blood vessel by holding the housing and rotating the thumbwheel, furthering the distal end of the catheter over the guidewire, and removing the needle and the guidewire from the catheter.

A needle is provided that can be used for introducing or aspirating fluids to a patient or as an introducer needle for positioning and inserting a catheter, such as a peripheral IV catheter into a patient. The needle can be an introducer needle that extends from the distal end of the catheter during insertion. The needle has an insertion tip with a configuration to assist penetration into a vein with a reduced incidence of injuring the inner surface of the vein or inadvertently passing through side wall of the vein. The needle tip can be farmed with a curved distal end surface where the pointed tip is spaced radially inward relative to the outer surface of the needle. In another embodiment the needle tip can have a reverse beveled surface having an axial length, angle, and curvature to assist in penetrating the vein with a reduced incidence of transfixing the vein.

The present invention provides a catheter for treating occlusions in blood vessels. The catheter includes at least one electrode pair positioned inside of a flexible angioplasty balloon at the distal end of the catheter. In some designs, the electrode pairs are arranged in a low-profile or coplanar configuration, reducing the diameter of the distal end of the device and permitting treatment of tight and hard-to-cross occlusions. The flexible angioplasty balloon has an extremely low profile and does need to be folded before insertion of the catheter into the cardiovascular system. During treatment, the balloon can be expanded a relatively small amount sufficient to immerse the electrode pairs in a conductive fluid before generating shock waves across the electrodes to treat the occlusion. The balloon can be made of material having elastomeric properties such that it returns to its original low profile configuration when it is deflated following treatment.

A tool for inserting a catheter into a body of a patient is provided. The tool comprises: a housing in which at least a portion of the catheter is initially disposed; a needle distally extending from the housing, at least a portion of the catheter disposed over the needle; a guidewire initially disposed within the needle partially; and an advancement assembly for distally advancing the catheter. The housing comprises: a first portion comprising a distal part and a proximal part; and a second portion engaged with the first portion, wherein the distal part of the first portion is configured to be able to distally slide with respect to the second portion to release the engagement between the first portion and the second portion. The advancement assembly includes a safety cap which is initially disposed over the needle and is configured to be locked to the housing when distally sliding to a position of isolating the tip of the needle within the safety cap.

The present disclosure relates to a drainage catheter and methods of use for providing catheterization procedures, such as during a percutaneous nephrostomy. The drainage catheter includes a body including a first tube segment and a second tube segment connected to one another at a curved end portion to form a continuous body structure. An inner surface of the curved end portion includes one or more drainage openings extending therethrough, with an outer surface of the curved end portion free of drainage openings. The openings are in communication with a lumen that extends through the drainage catheter to provide a pathway for removing fluid from the kidney. The drainage catheter is inserted into the kidney via a first insertion site and exits via a second insertion site.

A delivery device is provided with an insertion device having a retraction spring configuration for automatic insertion needle retraction. A button of the insertion device is used to insert the insertion needle and catheter, and once the insertion needle are fully inserted, a rotating engagement releases the needle hub where the springs automatically retract the insertion needle. A catheter assembly includes a catheter hub, a septum and a catheter. The catheter hub has a fluid passage separate from the insertion needle to supply a fluid to the catheter. The fluid passage can extend through a distal end of the septum, through a side portion of the catheter hub and septum, or through a side portion of the catheter hub directly to a fluid chamber formed between the septum and a distal end of the catheter hub.

Apparatus and methods are described for treating an occlusion in a blood vessel. A catheter is inserted into the blood vessel. An irradiation unit is driven to emit probing radiation such that the probing radiation is directed toward the occlusion, and returning radiation which is returned in response to the probing radiation impacting the occlusion, is detected. A composition of at least a portion of the occlusion is derived based on a signature that is indicative of the composition within the returning radiation. The irradiation unit is driven to irradiate the portion of the occlusion by emitting treatment radiation having a set of irradiation parameters. The set of irradiation parameters is determined to modulate between a photoacoustic effect of the treatment radiation and a photothermal effect of the treatment radiation, based on the composition of the portion of the occlusion. Other applications are also described.

The invention discloses a blockage dredging device for a ureteral stent. The blockage dredging device is used for being inserted into the ureteral stent to achieve the blockage dredging effect. The invention belongs to the field of medical auxiliary instruments. Comprising a catheter which comprises a catheter wall and a catheter cavity defined by the catheter wall; the ultrasonic guide wire is provided with an output piece; the connecting piece is fixedly arranged at the end part of the conduit; the host is connected with the connecting piece; the detection head is fixedly arranged at the end, inserted into the human ureter, of the catheter; the suction assembly is used for sucking obstructions in the ureter; wherein a diaphragm is arranged in the tube cavity, so that a suction cavity is formed in the tube cavity; the ultrasonic guide wire is arranged in the tube cavity in a penetrating manner; the output part is used for generating high-frequency oscillation to emit ultrasonic waves to break the blockages; an ultrasonic transduction unit connected with the ultrasonic guide wire is arranged in the connecting piece; the detection head is electrically connected with the host so as to transmit an electric signal into the host. The device has the beneficial effects that the blockage condition in the ureteral stent is detected through the ultrasonic detection function, and blockage dredging is conducted through the ultrasonic principle.