A medical puncture needle includes: a metal needle body formed in a tubular shape and including: a blade surface formed at a distal end portion of the needle body, a first transmission window configured to transmit light, and a second transmission window configured to transmit light transmitted through the first transmission window. The second transmission window is located on a proximal end side relative to the blade surface. The first transmission window and the second transmission window are shifted from each other in a circumferential direction of the needle body.

A catheter insertion device for inserting a catheter into a body of a patient is disclosed. The catheter insertion device includes a retractable needle for establishing access to a subcutaneous vessel of the patient and a manually extensible guidewire for guiding the initially attached catheter into the vessel. In one embodiment, the catheter insertion device comprises a housing, a hollow needle retractably extending from the housing, a catheter initially disposed on a portion of the needle, a guidewire including a portion initially disposed within the needle, a guidewire advancement feature configured to selectively advance a distal end of the guidewire distally past a distal end of the needle, and a needle retention component configured to selectively enable retraction of the needle into the housing. The needle retention component is configured to be actuated by the guidewire advancement feature. In one embodiment, one-handed operation of the device is possible.

An example introducer is disclosed. An example introducer includes an inner liner including a lumen, a distal region and at least one folded portion extending along the distal region. The introducer also includes a reinforcing member having a length and including at least one spine extending along the length of the reinforcing member. The introducer also includes a sheath disposed along at least a portion of the introducer, wherein the sheath includes at least one perforation, wherein material adjacent to the at least one folded portion is removed from a distal portion of the introducer to form a tip region. The introducer also includes a tip member disposed along the tip region.

A cannula capture mechanism is described herein. The capture mechanism may include an inner housing, outer housing, and a cannula. The outer housing may be configured to move between a compressed and a decompressed state. An outer surface of the inner housing may include one or more interlock components. When the cannula is exposed from a distal end of the inner housing, the one or more interlock components may interact with one or more interlock surfaces formed in another surface of the catheter device. When the cannula is retracted proximally within the inner housing, the inner housing may contract radially inward causing the one or more interlock components to be separated from the one or more interlock surfaces and the outer housing to move to the decompressed state and extend distally over a distal portion of the inner housing.

Catheter assemblies may include introducer needles having a notch or similar structure that allows flashback blood to enter the annular space between a catheter tube and an introducer needle of an IV catheter. The presence of flashback blood in this annular space can provide a clinician with an early, visible indication that a needle has entered a vein. The notch, however, may create a leak path for blood to escape outside of the catheter assembly, unless contained. Disclosed herein is a notch containment that prevents the notch from providing a leak path for blood to escape outside of the catheter during or after needle withdrawal.

An introducer may include a layered tubular member having an inner liner including at least one folded portion extending along a distal region of the inner liner in a delivery configuration; a reinforcing member disposed over at least a portion of the inner liner, the reinforcing member including a plurality of longitudinal spines defining a plurality of openings disposed between adjacent longitudinal spines, wherein each folded portion is circumferentially overlapped by one of the plurality of openings; and an outer sheath disposed over the reinforcing member, wherein the outer sheath includes at least one perforation circumferentially overlapping each folded portion; and a tip member fixedly attached to a tapered distal region of the layered tubular member. The inner liner may extend to a distal end of the layered tubular member. At least a portion of each folded portion may terminate proximal of the distal end of the layered tubular member.

A catheter assembly may include a catheter hub, which may include a distal end, a proximal end, and a catheter hub lumen extending through the distal end of the catheter hub and the proximal end of the catheter hub. The catheter assembly may include a catheter extending from the distal end of the catheter hub. The catheter may include a catheter tube, which may include a distal end, a proximal end, and a catheter tube lumen extending through the distal end of the catheter tube and the proximal end of the catheter tube. The catheter may also include a fluid-permeable section extending from the distal end of the catheter tube. The fluid-permeable section may include a coil or a lattice. The catheter assembly may include an introducer needle extending through the catheter tube and the fluid-permeable section.

Intravenous catheter system includes a housing and a guidewire completely disposed within the housing. The system can also include a guide wheel disposed in the housing and operable to rotate about a first axle. The guide wheel can include an inner surface configured to engage the guidewire and move the guidewire. Additionally, the system can include a support wheel operable to engage the guidewire opposite the guide wheel. The support wheel can rotate about a second axle.

A catheter system may include a catheter assembly and a needle assembly. The needle assembly may include a cover disposed over a push button. An inner surface of the cover may include a projection, and the cover may be configured to slide proximally. In response to the cover sliding proximally, the projection may be configured to contact the push button, and the push button may be configured to depress. The push button may include a living hinge. The housing may include a flange contacting a proximal end of the push button to prevent the proximal end of the button from being depressed. In response to bending of the living hinge, the push button may be configured to move distal to the flange and depress. In response to depression of the push button, the needle hub may move proximally within the barrel to retract the introducer needle.

The present technology relates to a hemostasis sealing device having a device enclosure with a first seal portion for a medical device and a second seal portion for guide wire sealing. The device enclosure can be generally configured for compressive communication with a housing. The second seal portion can define a split that is in compressive communication with structural elements of the hemostasis sealing device, which can simultaneously provide sealing functionality and allow passage of relatively large-bore devices.