191 results about "Catheter insertion" patented technology

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.

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.

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.

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.

The present disclosure relates to a laryngoscope blade modification for endotracheal intubation. The disclosure provides a flexible channel attached to the laryngoscope blade or a rigid channel that opens via a spring system. The channel further incudes a slit along the entire portion of the channel, enabling a guidewire to be loaded into the channel and advanced to a patient's vocal cords and trachea before being dislodged or removed in a quick, efficient manner. An endotracheal tube is then slided over the guidewire into the vocal cords and trachea. Once endotracheal tube is inserted, guidewire is removed and intubation initiated. The present disclosure enables a faster insertion of a guidewire into the vocal cords over conventional methods without wasting precious seconds. By using a guidewire with a soft tip, the incidence of vocal cord injury decreases substantially and intubation performed successfully in a quick manner.

A device for inserting a catheter according to a disclosed embodiment comprises: a needle including a needle body extending in a first direction, a tip forming a distal end in the first direction, and a pair of edge portions which meet each other at an acute angle at the tip, have widths increasing in both directions perpendicular to the first direction toward a second direction opposite to the first direction, and form sharp edges so that the skin of a patient can be incised in the both directions; and a sheath having a guide hole extending in the first direction therein so that a catheter can be inserted, wherein the needle body is disposed through the guide hole so that the tip and the edge portions of the needle are positioned in the first direction of the guide hole, and the outer diameter of the distal end in the first direction is greater than the maximum width of the pair of edge portions in both directions.

Devices and methods for creating hemostasis at a subcutaneous vascular puncture are disclosed. The methods and devices may be used to close vascular punctures following trans-radial arterial procedures, e.g., catheterization and percutaneous coronary intervention. The devices may include a housing defining a suction chamber and an anvil disposed within the suction chamber and adhesively attached to the limb of a patient such that the apparatus creates a pulling force as well as a pushing force on the patient's skin, subcutaneous tissue, and artery. Alternatively, the pulling force and pushing force may be accomplished be mechanical means.

To easily fix a catheter even in a state where a catheter fixture is fixed to the body surface. [Solution] The catheter fixing device (100) includes a catheter holding section (110) having a catheter insertion hole (140) through which a catheter (200) is inserted and frictionally engaged. The catheter holding section (110) has a first section (111) and a second section (112) that are displaceable between a preparation position and a use position, and a lock section (161) that holds the first section (111) and the second section (112) in the use position. The first section (111) and the second section (112) each have a first groove section (141) and a second groove section (142) provided on a first surface (131) and a second surface (132) that stand upright relative to the bottom surface, respectively. In the use position, the first surface (131) and the second surface (132) abut against each other, and the first groove section (141) and the second groove section (142) combine to form the catheter insertion hole (140).

The invention discloses an anti-winding intestinal obstruction catheter system and method. The anti-winding intestinal obstruction catheter system comprises a handle, a catheter body and a rigidity adjusting device. The catheter body is a flexible body, the near end of the catheter body is connected with the handle, and the far end of the catheter body is provided with a balloon and a charging pipeline communicated with the balloon; the rigidity adjusting device is connected with the catheter body and used for adjusting the bending rigidity of the catheter body after the catheter body is placed into the duodenum. The anti-winding intestinal obstruction catheter system is adopted in the catheter indwelling method of the anti-winding intestinal obstruction catheter, and the anti-winding intestinal obstruction catheter system and method can effectively prevent the catheter from being wound, improve the catheter indwelling success rate and ensure the operation safety at the same time.

In some embodiments, the catheters disclosed herein include a distal section of the catheter configured to enter a skin insertion site. The distal section includes a taper junction including one or more expansion structures configured to expand the skin insertion site. The distal section further includes a distal portion extending from the distal end of the taper junction. The distal portion has a smaller diameter than the proximal portion of the catheter. In combination, the taper junction, the one or more expansion structures, and specific user actions that urge the catheter into the skin insertion site can enhance the fit of the catheter at the insertion site.

To provide a suitable lesion crossing shock wave catheter.SOLUTION: The present invention provides a catheter for treating an occlusion in a blood vessel. The catheter includes at least one electrode pair (222, 243) positioned inside a flexible angioplasty balloon (280) at a distal end (200) of the catheter. In some designs, the electrode pairs are arranged in a low-profile or co-planar configuration to reduce the diameter of the distal end of the device and allow treatment of tight, difficult-to-cross occlusions. The flexible angioplasty balloon (280) has an extremely low profile and does not need to be folded prior to insertion of the catheter into the cardiovascular system. During treatment, the balloon may be expanded by a relatively small amount sufficient to immerse the electrode pair in the conductive fluid prior to generating shock waves across the electrodes to treat the occlusion. The balloon may be made from a material having elastomeric properties such that when it is deflated following treatment, it returns to its original low-profile configuration.SELECTED DRAWING: Figure 2B

A method includes s inserting, into a heart of a patient, a catheter having multiple electrodes, and placing the electrodes in contact with tissue of the heart. For each of the electrodes: (i) position signals indicative of a position of the electrode, and (ii) electrocardiogram (ECG) signals acquired by the electrode, are received during a predefined time interval. A positioning stability, along the predefined time interval, is calculated for each of the electrodes based on the position signals. For the electrodes whose positioning stability has an error smaller than a given threshold, calculating whether the ECG signals are indicative of an atrial fibrillation (AF) in the heart. The ECG signals that are indicative of the AF are stored.

A vascular access system and method for ultrasound monitoring and an integrated sensor array are provided. The vascular access system may include a vascular access device, an ultrasound assembly, a fixation dressing, a base unit, and one or more monitoring devices. The ultrasound assembly may include an ultrasound probe that can be positioned on a catheter when inserted into the patient's vascular system and may be configured to allow integration of one or more sensors. Images from the ultrasound probe and readings from one or more sensors can be processed to generate parameters representing the state, events, or other information about the catheter. Display content, including images and parameters, may be provided to the monitoring device.

The invention is entitled "Breath control during cardiac ablation." The invention discloses a method for invasive cardiac treatment, the method comprising inserting a catheter into a beating heart of a patient who is anesthetically paralyzed and intubated for ventilation via a transvascular path, and temporarily stopping ventilation of the patient after the catheter is inserted. The method comprises moving the catheter between a plurality of locations of myocardial tissue of the heart with the ventilation stopped, and ablating the myocardial tissue of the heart at the plurality of locations with the ventilation stopped.

In one aspect, a form-fitting packaging container for a catheter includes a hollow body and a plurality of supports disposed in the hollow body. The plurality of supports define a central opening configured to receive the catheter. The central opening is concentric with the hollow body. In another aspect, method of assembling a form-fitting packaging container for a catheter includes providing a hollow body, providing a plurality of supports in the hollow body, where each support defines a central opening; and inserting a catheter through the central openings of the plurality of supports.

A catheter drive system including a catheter, a catheter insertion mechanism configured to advance and retract the catheter, a catheter steering interface configured to receive one or more mechanical inputs from a user, a steering transmission configured to receive inputs from the catheter steering interface and generate steering outputs, and a catheter steering mechanism secured to the catheter and configured to receive the steering outputs from the steering transmission and apply the steering outputs for articulation of the catheter.

The utility model relates to an auxiliary defoaming and degassing device for oil pollution degree detection, the auxiliary defoaming and degassing device comprises a pressure tank, an inflator pump, a sucking pump, a purification bottle and a conduit, the pressure tank is provided with an inflation port and a suction port, the inflator pump is connected with the inflation port, the sucking pump is connected with the suction port, and the conduit is inserted into the pressure tank; an inflation valve is mounted at the inflation inlet; the extraction opening is provided with an extraction valve; a valve is mounted on the guide pipe; the guide pipe is connected with a sample feeding pipe of an oil pollution degree detector; the auxiliary defoaming and degassing device further comprises a purification bottle; the purification bottle is provided with an opening; the purification bottle is placed in the pressure tank, oil liquid to be detected is injected into the purification bottle, and the guide pipe extends into the purification bottle from an opening of the purification bottle to the bottom of the purification bottle.

The present disclosure relates to an accessory device for a catheter. An accessory device for assisting in the insertion of a catheter is disclosed. The accessory device includes a handle including an attachment means for releasably coupling the catheter to the handle, and a camera for capturing one or more images, and a monitor in communication with the camera is disclosed. The monitor includes a display configured to display the one or more images. The accessory device provides visualization of the passageway region on the monitor by the camera moving in tandem with the catheter, such that the user is assisted in identifying the body passage and inserting the catheter.

This invention provides a pipeline laying method and a centering component that enable smooth and low-cost joining of leading and trailing pipes. [Solution] The pipeline laying method comprises an installation step of installing a centering member 8 on the inner surface of the socket of the lead pipe 3; a centering step of inserting the insertion end of the lead pipe 4 into the socket of the lead pipe 3 and inserting the centering member 8 into the gap between the inner surface of the socket of the lead pipe 3 and the outer surface of the insertion end of the lead pipe 4 to align the pipe axes of both pipes 3 and 4 at the joint portion of both pipes 3 and 4; and a retrieval step of, after the centering step is completed, pulling out the centering member 8 from between the inner surface of the socket of the lead pipe 3 and the outer surface of the insertion end of the lead pipe 4 and retrieving it. The centering member 8 has a plate-shaped portion 8a that is sandwiched in the gap between the inner surface of the socket of the lead pipe 3 and the outer surface of the insertion end of the lead pipe 4, and an extended piece 8b that protrudes from the gap and extends from the plate-shaped portion 8a so as it moves away from the plate-shaped portion 8a, it moves away from the outer surface of the insertion end of the lead pipe 4.

Methods and systems for accessing and diagnosing diseased lung compartments are disclosed. Methods may comprise introducing a diagnostic catheter with an occluding member at its distal end into a lung segment; inflating the occluding member to isolate the lung compartment; and performing a diagnostic procedure with the catheter. The proximal end of the diagnostic catheter is configured to be attached to a console. Methods may also include allowing air to enter the lung compartment through the passage in the catheter while the patient is inhaling and blocking air from being expelled from the lung compartment through the catheter passage while the patient is exhaling by using a one-way flow element adapted to be disposed within or in-line with the passage of the catheter so that flow in a proximal-to-distal direction is allowed and flow in a distal-to-proximal direction is inhibited or prevented.

Various embodiments of the present disclosure provide a medical device straightener. The medical device straightener can comprise an elongate shaft extending along a shaft longitudinal axis, the elongate shaft including a shaft proximal end and a shaft distal end, wherein a shaft inner wall of the elongate shaft defines a shaft lumen extending therethrough. The medical device straightener can comprise a bleedback valve that includes an outer circumferential surface. The bleedback valve can be disposed at a distal end of the elongate shaft, within the shaft lumen, wherein a portion of the outer circumferential surface is in communication with the shaft inner wall. The bleedback valve can define a radially expandable lumen longitudinally extending through a center of the bleedback valve.

A. catheter insertion device includes a housing, a button including a body and at least one arm extending from the body into the housing to movably couple the button to the housing, the button is movable between a raised position and a depressed position, and a needle hub coupled to the button to move with the button between the raised position and the depressed position. In the raised position, the body of the button is a first distance from the needle hub that reduces visibility of the needle hub through the body of the button. In the depressed position, the body of the button is a second distance from the needle hub less than a first distance that allows visibility of the needle hub through the body of the button.

The endoscope includes an insertion portion, a hand-operating unit, a first treatment-instrument conduit, and a second treatment-instrument conduit. One end of the insertion portion is coupled to the hand-operating unit. The first treatment-instrument conduit passes through insides of the insertion portion and the hand-operating unit. A treatment instrument is inserted into the first treatment-instrument conduit from an upper end of the hand-operating unit. The second treatment-instrument conduit passes through insides of the insertion portion and the hand-operating unit and includes a branching portion that branches off into a first branching path and a second branching path at the hand-operating unit, a treatment instrument is inserted into the second treatment-instrument conduit from the first branching path. The first treatment-instrument conduit includes a first part having a first hardness at least at a grip portion in the hand-operating unit and a second part having a second hardness smaller than the first hardness.

Techniques and technologies for vascular access devices having curvature for improved introduction of catheters into vasculatures are disclosed. A representative vascular access device includes a curved introducer having a shaft that includes a tip configured to penetrate at least a proximal wall of a blood vessel of a patient. The shaft may have a straight section and a curved section disposed between the straight section and the tip. The curved section may be configured to provide a curvature between the straight section and the tip such that a tip longitudinal axis that extends from the tip forms an introducer angle with a straight longitudinal axis of the straight section. The introducer angle may be configured to at least partially reduce contact by the tip and catheter with a distal wall of the blood vessel after the tip has been inserted through the proximal wall of the blood vessel.

A method of treating heart disease in a subject includes percutaneously introducing a catheter into vasculature of the subject. The catheter may include a neuromodulation element. The neuromodulation element may be positioned on a flexion element. The flexion element may deflect away from or toward a central axis defined by the catheter in response to an operator pulling or releasing a pull-wire. The neuromodulation element of the catheter can be positioned in a subclavian artery of the subject. The catheter can be used to selectively target and electrically stimulate at least one of a dorsal subclavian ansae or a ventral subclavian ansae. The method can include confirming stimulation of the dorsal subclavian ansae and / or the ventral subclavian ansae by monitoring a cardiac parameter. After confirming stimulation of the dorsal subclavian ansae and / or the ventral subclavian ansae, ablation energy can be provided to the dorsal subclavian ansae and / or the ventral subclavian ansae.

The device is configured to be positioned within an autologous heart valve to impede regurgitation through the valve. The device may be small in size, allowing insertion via a steerable catheter extending through a guide sheath. The device may include a paddle that opens and closes by applying a rotational force. The device may include an adjustable spring-loaded closing force. The device may include a biasing member with variable loading and unloading curves. The device may include a clamping member or fastening member with a reduced-size hinge portion. The device may include a clamping member that reduces relative movement between the clamping member and the base or mating element as the paddle moves.

Integrated IV catheters can have a side port that facilities drawing blood. The side port provides separate fluid pathways for drawing blood and for injecting fluids via an extension set. The side port can be configured to allow the extension set to be primed while a blood sample is collected. In this way, the collection of a blood sample at the time of catheter insertion is facilitated.

This invention provides a painless urinary catheterization kit, relating to the field of medical device technology, and solves the technical problem of extremely high pain and discomfort during the insertion and removal of urinary catheters in existing technologies, resulting in a very poor experience. The device includes an independent drug delivery catheter and a urinary catheter. The drug delivery catheter is used to administer medication into the urethra, and its diameter d ≤ 2 mm. The urinary catheter has a side hole on its side wall, and a drug delivery channel communicating with the side hole is provided inside the urinary catheter. This invention allows for the pre-injection of anesthetic drugs and lubricating fluid into the urethra via the drug delivery catheter, ensuring sufficient anesthesia and lubrication during catheter insertion, thereby reducing pain during insertion. Similarly, during catheter removal, the drug delivery channel and side hole can be used to pre-inject anesthetic drugs and lubricating fluid into the urethra, further reducing pain during removal.

A device configured for use at a catheter insertion site on a subject can include a base configured to be secured to the subject's skin over the insertion site and a catheter hub holder configured to secure to a catheter hub connected to a catheter that is configured for insertion at the insertion site. The catheter hub holder can be movably coupled to the base to allow for relative movement between the base and the catheter hub and catheter. The catheter hub holder and base can be connected via a gimbal arrangement. The base can include a membrane configured to secure to the subject's skin and a frame. In some implementations, the catheter hub holder is rotatably coupled to a clamp that is connected to the frame. In some implementations, the clamp is pivotably connected to the frame and configured to pivot between open and closed positions.