Abstract: A tissue-spreader assembly is configured to be selectively inserted into a patient having a first biological tissue and a second biological tissue, and to be maneuvered proximate to the second biological tissue. The tissue-spreader assembly is also configured to selectively engage, at least in part, an area of the second biological tissue without engaging the first biological tissue. The tissue-spreader assembly is also configured to selectively spread, at least in part, the area of the second biological tissue, and maintain the area of the second biological tissue in a spread-apart condition after the tissue-spreader assembly, in use, selectively engages, at least in part, the area of the second biological tissue.

Abstract: A stop-movement device is configured to be mounted to a first elongated medical assembly and a second elongated medical assembly. The stop-movement device has a body configured to stop, at least in part, relative movement between the second elongated medical assembly and the first elongated medical assembly.

Abstract: A guidewire assembly configured to be deployed from an ancillary assembly. The guidewire assembly has a distal puncture tip extending from a deployed distal-shaped section configured to mitigate piercing tip touch back on a biological wall after the elongated guidewire assembly is deployed from the ancillary assembly, and the distal puncture tip crosses a biological wall.

Abstract: A medical guidewire configured for puncturing a tissue. The medical guidewire includes an elongate guidewire body having a proximal portion with a first outer diameter and a distal portion with a second outer diameter. The second outer diameter is smaller than the first outer diameter, forming a tapered section between the first outer diameter and second outer diameter. The medical guidewire further includes a piercing device extending from the distal portion, forming a puncturing distal tip. An identification device is positioned on the elongate guidewire body on the first outer diameter proximal the tapered section. The identification device is configured to enhance detectable visibility of the medical guidewire.

Abstract: A medical sheath includes an elongate member having a proximal portion defining a proximal end and a distal portion defining a distal end. A first lumen extends through the elongate member and is open at the proximal and the distal end for passage of a medical device through the lumen. The medical sheath further includes an anchoring mechanism that is deployable from the elongate member. The anchoring mechanism includes an anchor that is removably securable to an anatomical feature to secure the elongate member to the anatomical feature, and a connector securing the anchor to the elongate member.

Abstract: A medical guidewire assembly is movable through a guidewire introducer. A piercing stylet device extends from the medical guidewire assembly. The piercing stylet device is configured to puncture tissue of a patient in response to movement of the medical guidewire assembly through the guidewire introducer toward tissue. An identification device is mounted to the medical guidewire assembly. The identification device is spaced apart from the piercing stylet device. The identification device is configured to enhance the detectible visibility of the piercing stylet device.