Irrigation devices, methods, and systems are disclosed. The system comprises a catheter with one or more lumens and an expandable portion. One or more pumps are used to supply a mixture of contrasting and dilating agents in an interior kidney volume and flush a portion of the mixture out of the interior kidney volume. The method comprises placing a catheter into the interior kidney volume through a ureter, occluding a portion of the ureter with a distal end of the catheter, forming an exit port through an exterior kidney surface, flowing the contrasting and dilating agents through the one or more lumens to supply the mixture in the interior kidney volume, and flushing a portion of the mixture out of the exit port.

A vascular puncture device is a vascular puncture device that punctures a blood vessel using an inner needle having a sharp needle tip, a flexible outer tube covering the inner needle, a drive unit moving the inner needle and the outer tube, and an imaging unit capable of acquiring a cross-sectional image of a human body in contact with a skin surface and visualizing a distal end of the inner needle, and includes a control unit controlling movement of the drive unit. The control unit calculates one or more of a movement distance and a puncture angle of the drive unit based on a separation distance between the distal end of the inner needle and a distal end of the outer tube, and moves the drive unit to set the drive unit at one or more of the calculated movement distance and the calculated puncture angle.

Disclosed herein are systems, devices, and methods for accessing a subdural space. In some embodiments, an apparatus may comprise a shaft configured to be slidably disposed within a lumen of a catheter. The shaft may be configured to be advanced distally from a distal end of the catheter and into a blood vessel of a subject. The shaft may include a perforating tip including an energy element configured to generate radiofrequency energy to form an opening through a wall of the blood vessel and dura of the subject and into an extravascular space of the subject. A curved section may be configured to be radially constrained within the lumen of the catheter and to curve toward the wall of the blood vessel and the dura upon exiting the lumen of the catheter such that the energy element is positioned to form the opening.

The invention relates to a positioning sputum suction laryngeal mask. The positioning sputum suction laryngeal mask comprises a mask body and a mask body tube, wherein the mask body comprises a mask body bottom plate and a mask main body arranged on the mask body bottom plate, a central region in the mask main body is provided with a mask body cavity communicated with the mask body tube, a stomach decompression tube corresponding to the stomach mouth is arranged on the back side of the mask body bottom plate, and the stomach decompression tube is isolated from the mask body cavity through the mask body bottom plate. The positioning sputum suction laryngeal mask also comprises a connection suction mechanism capable of realizing negative pressure suction in a gas supply process. The connection suction mechanism comprises a suction connecting tube which is arranged in the mask body bottom plate, and the end, located in the mask body bottom plate, of the suction connecting tube is communicated with the stomach decompression tube. The positioning sputum suction laryngeal mask can be effectively positioned, has lower complexity and usage costs, can ensure the ventilation and sealing effect without air inflation in use, can realize suction of secretions in a ventilation process, can avoid airway blockage caused by epiglottis, and can improve the stability and reliability in use.

Irrigation devices, methods, and systems are disclosed. The system comprises a catheter with one or more lumens and an expandable portion. One or more pumps are used to supply a mixture of contrasting and dilating agents in an interior kidney volume and flush a portion of the mixture out of the interior kidney volume. The method comprises placing a catheter into the interior kidney volume through a ureter, occluding a portion of the ureter with a distal end of the catheter, forming an exit port through an exterior kidney surface, flowing the contrasting and dilating agents through the one or more lumens to supply the mixture in the interior kidney volume, and flushing a portion of the mixture out of the exit port.

A blood flow stimulator may help encourage blood flow in a limb of a patient. The blood flow stimulator may include a housing configured for sealing about the limb of the patient. The housing may include a sealable volume, and the sealable volume may receive the limb of the patient. The blood flow stimulator may include a seal, and the seal may be coupled with the housing. The seal may engage with at least a portion of the limb, for instance to segregate the sealable volume from a surrounding environment of the blood flow stimulator. The blood flow stimulator may include a conduit extending through the housing. The conduit mat help provide access to the sealable volume, for instance from the surrounding environment. In some examples, an adjustable stent is utilized to enhance blood flow within vasculature of a patient. A stent operator may change a size of the stent.

The present invention pertains to a system, method, and device for treating sleep disorders. The present invention is particularly useful in the delivery of carbon dioxide (CO2) to a subject and in the treatment of sleep apnea. Furthermore, integration of components with various sensors and apparatuses associated therewith and attached thereto preferably complete a rebreathing circuit in the present invention. In various embodiments of the present invention where the above components are integrated as a rebreathing circuit, a subject is both the source and recipient of a controlled concentration of carbon dioxide. In such embodiments, treatment of sleep disorders becomes much more efficient and effective.

The present invention pertains to a system, method, and device for treating sleep disorders. The present invention is particularly useful in the delivery of carbon dioxide (CO2) to a subject and in the treatment of sleep apnea. Furthermore, integration of components with various sensors and apparatuses associated therewith and attached thereto preferably complete a rebreathing circuit in the present invention. In various embodiments of the present invention where the above components are integrated as a rebreathing circuit, a subject is both the source and recipient of a controlled concentration of carbon dioxide. In such embodiments, treatment of sleep disorders becomes much more efficient and effective.

A deep vein intravenous introducer has a wheel located toward the front end of the device that can be rotated by the index finger of the user. After placement of the needle in the lumen of the vessel, the user rotates the wheel, which advances the wire guide through the center of the needle and into the patient. Once the guide wire is advanced into the vessel lumen the catheter can be advanced over the guide wire with a hub or finger tab on the catheter close to the index finger. The operation can be performed by one hand without moving the hand from its initial position. The user can then simultaneously use the other hand to operate an ultrasound detection device during insertion without the assistance of another person. A catheter is provided that can be visualized by ultrasound to enable confirmation of correct placement in a vessel. A probe cover is provided that is pre-sterilized and packaged in a cardboard with the top sides of the cover folded down over the cardboard. The cover is placed over the probe end, the sides of the cover are folded up, and the cardboard is removed. The sterile probe cover can be quickly and efficiently placed over the ultrasound's transducer end. Finally, a kit is provided that contains all of the medical devices needed to perform cannulation.

Systems for use in assisted respiration can permit insertion of one or more elongated medical instruments into the proximal and/or distal airway of a patient during administration of assisted respiration, which may, in some instances, proceed with a patient awake or only minimally sedated. In some systems, a bite block is coupled with a mask and is movable relative to the mask such that the system is capable of accommodating differing patient anatomies.