An integrated catheter assembly includes a housing member, an outer lumen member extending from the housing member, and a needle member slidably or movably coupled to the housing member, wherein the needle member can be extended beyond a first port of the outer lumen member in a first position and concealed in the outer lumen member in a second position. The outer lumen member has a side port between its first and second ports such that when the needle is extended in the first position and inserted into an arteriovenous fistula, blood from the arteriovenous fistula flashes into the needle member, is diverted through a relief port of the needle member out the side port of the outer lumen member for delivery to a dialysis machine. The assembly further includes an inner lumen member that is disposable through the housing member to extend out from the same the outer lumen member to provide dialyzed blood from the machine. The assembly therefore receives and delivers blood through a single injection site.

An endoluminal punch and introducer sheath are described wherein the endoluminal punch comprises a guidewire lumen through which a user is capable of placing a guidewire. The endoluminal punch system further comprises a mechanism affixed to the hub which is capable of controlling the axial positioning of the guidewire relative to the endoluminal punch distal end. The control mechanism can be released so that the endoluminal punch can be removed from a patient while retaining the guidewire in place within the patient. The endoluminal punch introducer, including a sheath and dilator, can comprise energy emitting electrodes or transducers for cutting larger size holes in stubborn (friable, scarred, or fibrotic) tissue. In other embodiments, the endoluminal punch can comprise a guidewire or stylet, wherein the guidewire or stylet is capable of emitting energy to cut through tissue.

A method and device are provided for simultaneously or near-simultaneously diagnosing and treating tension pneumothorax and/or hemothoraxA Veress-type needle portion includes a hollow needle for puncturing the chest wall over a blunt hollow probe biased by one or more springs to extend distally into the pleural cavity. Openings in the blunt hollow probe connect via a pathway to an automatic check valve, which permits the flow of air and/or fluid only in a proximal direction. Pressure from within the pleural cavity is transmitted to the interior surface of a pressure documenter. If pressure greater than atmospheric pressure is present in the pleural cavity, the pressure documenter will be automatically urged proximally to simultaneously allow air and/or fluid to escape from the pleural space through the device, thus treating the tension pneumothorax and/or hemothorax, as well as providing a stable indicator to positively document the diagnosis of increased pressure.

A catheter assembly may include a catheter adapter. A body of the catheter adapter may include a distal end, a proximal end, and a lumen extending through the distal end and the proximal end. A catheter may extend distally from the distal end of the body. The catheter adapter may include a side port, which may extend outwardly from the body. The catheter assembly may include a valve disposed within the lumen. The valve may include a channel extending through the valve. The catheter assembly may include a cannula fixed within the side port and disposed within the channel. The cannula may include an opening, and the valve may be configured to compress to expose the opening from within the valve.

A catheter assembly includes a catheter, a catheter hub, an inner needle, and an inner needle hub. The catheter assembly is disposed in a hollow portion axially extending in the interior of the inner needle, and includes a blunt needle having a distal end portion blunter than a needle tip and a movement mechanism for moving the blunt needle. The movement mechanism is configured separately from the catheter hub and causes the distal end of the blunt needle to protrude beyond the needle tip along with the movement of the catheter.

Exemplary embodiments described herein are directed to arteriovenous (AV) access catheters with inline needles that are protectable by sliding displacement of the catheter, and to methods of performing hemodialysis using said AV catheters. Extension (sliding) of the catheter portion of an exemplary device relative to a needle portion, after the needle of the needle portion has been used to access a patient fistula/graft, allows the catheter to cover the needle tip, thereby minimizing or eliminating the possibility that the needle may damage the fistula/graft. Because the needle still remains largely within the catheter, there is no risk of catheter collapse, kinking, etc., which could compromise blood flow during a hemodialysis procedure.

The present invention relates to a safety puncturing system comprising a cannula and a guidewire.

An intravenous catheter introducer for medical use having a body, a frontal attachment that is disposed in transverse sliding engagement with a front part of the body, a hub tube assembly that is releasably supported by the frontal attachment, and a retractable catheter insertion needle and needle holder that are biased rearwardly by a spring offset laterally from the needle axis, whereby lateral repositioning of the body relative to the frontal attachment following vascular insertion moves a needle retraction cavity disposed inside the body into substantial coaxial alignment and causes the needle holder to be retracted into the needle retraction cavity.

A device for inserting a blunt-tip cannula under the skin of a patient with a view to injecting a biocompatible product, including a central body equipped with a groove that extends along a sagittal plane while having a sharp distal tip projecting from a distal end of the body in order to pierce the skin, the groove being arranged to allow the cannula to slide along same beyond the distal tip towards at least one area to be treated located under the skin, the central body being provided with two lateral gripping arms that extend symmetrically on either side of the sagittal plane in a transverse direction that forms, with the sagittal plane, an angle (α) of between 30° and 85°, each gripping arm further having a finger grip surface that has a front central portion located at a distance between 8 mm and 30 mm from the distal end of the central body.

The present invention relates a puncture needle includes: a sheath having a longitudinal axis; a needle tube that is arranged inside the sheath to be moved along the longitudinal axis and that has a needle tip; and a protective tube that is arranged inside the needle tube to be moved along the longitudinal axis and that has a lumen into which a guide wire is inserted. The needle tube has a step portion formed at a position midway along the needle tube. The protective tube has a protrusion, which protrudes radially outward, on an outer peripheral surface thereof at a position midway nearer a proximal end side of the protective tube than the step portion is. A distal end of the protective tube is positioned at a position to protrude from the distal end of the needle tube when the protrusion abuts the step portion.