Abstract: In some instances, an apparatus includes a hub that defines a cavity, a catheter that includes a lumen, and a core attached to the catheter. The core can include a valve actuation tip, and at least a portion of the core can be positioned within the cavity of the hub. The apparatus can further include a valving member that includes an attachment portion that is fixedly attached to the core and a valve positioned distal to a proximal end of the cavity and proximal to the valve actuation tip. The valve can be movable relative to the core such that as at least a portion of the valve moves distally, interaction between the valve and the valve actuation tip opens the valve to establish fluid communication between the cavity of the hub and the lumen of the catheter.

Abstract: A bone biopsy system can include a cutting cannula that is coupled to a powered drill. The powered drill can be actuated to rotate the cutting cannula and cut through a cortical layer of a bone. The powered drill can be decoupled from the cutting cannula while the cutting cannula extends through the cortical layer of the bone. A handle may then be used to manually advance the cutting cannula to a greater depth within the bone to core a sample.

Abstract: An apparatus can include a needle with a distal tip for insertion into a vessel of a patient, the needle defining an outer surface. The apparatus can include a catheter with a distal end and an inner surface that defines a lumen through which the needle extends. The apparatus can include a longitudinally extending stiffener positioned between the outer surface of the needle and the inner surface of the catheter. The stiffener can be movable to a distally advanced position relative to the needle to deploy the catheter and can be removable from the catheter along with the needle while in the distally advanced position. The stiffener can include a region of weakness at which the stiffener is predisposed to bend, which is closer to the distal tip of the needle than to the distal tip of the stiffener when the stiffener is in the distally advanced position.

Abstract: A catheter can include an extruded shaft that includes a lumen extending from a proximal end to a distal end and a sidewall that defines at least a portion of the lumen, the sidewall includes a siliconized polycarbonate polyurethane of a specified formulation. Due to the formulation, the sidewall can be alcohol resistant, which can, in some instances, permit alcohol locking of the catheter.

Abstract: An alcohol-resistant siliconized polycarbonate polyurethane can include a soft segment and a hard segment. The soft segment can include a polycarbonate polyol and a polysiloxane, which can be present in an amount less than the polycarbonate polyol. The hard segment can include an isocyanate and a chain extender. Peripherally inserted central catheter (PICC) devices can include one or more components that are at least partially formed from one or more formulations of the siliconized polycarbonate polyurethane catheter. The PICC devices can withstand alcohol locking, and can be power injectable both before and after alcohol locking events.

Abstract: A medical valve can include a housing that includes a sidewall and defines a chamber. The medical valve can include a septum coupled to the housing. The septum can include a proximal surface and a selectively openable closure positioned within the chamber. The medical valve can further include a plurality of projections that extend away from the sidewall and are configured to contact the proximal surface of the septum to oppose movement of a restricted portion of the septum in a proximal direction such that an aspiration cracking pressure required to open the closure to permit fluid flow through the septum in the proximal direction exceeds an infusion cracking pressure required to open the closure to permit fluid flow through the septum in the distal direction.

Abstract: A system can include a housing that can be coupled with a base catheter. The system can further include an access catheter of which a first portion is positioned within the housing and a second portion extends out of the housing through an opening when the access catheter is in a retracted position. The system can further include a stiffener encompassing at least a portion of the second portion of the access catheter, and the stiffener can be graspable at an exterior of the housing for application of force thereto to advance the access catheter from the retracted position to an extended position. When the housing is coupled to the base catheter, the first portion of the access catheter can be advanced through at least a portion of the base catheter as the access catheter is advanced to the extended position.

Abstract: A blood collection system can include a cannula for insertion into a catheter system that comprises a hub with an internal chamber, a distal port in fluid communication with the internal chamber and coupled with a catheter tube that can be preplaced in a blood vessel of a patient, and an access port in fluid communication with the internal chamber. The cannula can be inserted in the catheter tube and can include a distal opening that is positioned within the blood vessel of a patient and is in fluid communication with an interior of the blood vessel to permit blood to flow into a lumen of the cannula, and can include a proximal opening positioned within the internal chamber to permit blood to flow from the cannula into the internal chamber and through the access port of the hub.

Abstract: A medical driver can include a handle coupled to a drive shaft. The drive shaft can couple with an access assembly for drilling into bone, and can be displaced relative to the handle from a rotationally restricted state, in which the drive shaft is rotationally restricted relative to the handle, to a drilling state, in which the drive shaft is freely rotatable in at least one direction relative to the handle. The medical driver can further include a mechanical energy-storage device coupled to the drive shaft that can automatically rotate the drive shaft relative to the handle upon transition of the drive shaft to the drilling state. A biasing element can be coupled to the handle and to the drive shaft to provide a bias to maintain the drive shaft in the rotationally restricted state.

Abstract: A medical valve can include a housing that includes a sidewall and defines a chamber. The medical valve can include a septum coupled to the housing. The septum can include a proximal surface and a selectively openable closure positioned within the chamber. The medical valve can further include a plurality of projections that extend away from the sidewall and are configured to contact the proximal surface of the septum to oppose movement of a restricted portion of the septum in a proximal direction such that an aspiration cracking pressure required to open the closure to permit fluid flow through the septum in the proximal direction exceeds an infusion cracking pressure required to open the closure to permit fluid flow through the septum in the distal direction.

Abstract: A bone biopsy system can include a cutting cannula that is coupled to a powered drill. The powered drill can be actuated to rotate the cutting cannula and cut through a cortical layer of a bone. The powered drill can be decoupled from the cutting cannula while the cutting cannula extends through the cortical layer of the bone. A handle may then be used to manually advance the cutting cannula to a greater depth within the bone to core a sample.

Abstract: A medical driver can include a handle coupled to a drive shaft. The drive shaft can couple with an access assembly for drilling into bone, and can be displaced relative to the handle from a rotationally restricted state, in which the drive shaft is rotationally restricted relative to the handle, to a drilling state, in which the drive shaft is freely rotatable in at least one direction relative to the handle. The medical driver can further include a mechanical energy-storage device coupled to the drive shaft that can automatically rotate the drive shaft relative to the handle upon transition of the drive shaft to the drilling state. A biasing element can be coupled to the handle and to the drive shaft to provide a bias to maintain the drive shaft in the rotationally restricted state.

Abstract: An alcohol-resistant siliconized polycarbonate polyurethane can include a soft segment and a hard segment. The soft segment can include a polycarbonate polyol and a polysiloxane, which can be present in an amount less than the polycarbonate polyol. The hard segment can include an isocyanate and a chain extender. Peripherally inserted central catheter (PICC) devices can include one or more components that are at least partially formed from one or more formulations of the siliconized polycarbonate polyurethane catheter. The PICC devices can withstand alcohol locking, and can be power injectable both before and after alcohol locking events.