Blood sample optimization systems and methods are described that reduce or eliminate contaminates in collected blood samples, which in turn reduces or eliminates false positive readings in blood cultures or other testing of collected blood samples. A blood sample optimization system can include a blood sequestration device located between a patient needle and a sample needle. The blood sequestration device can include a sequestration chamber for sequestering an initial, potentially contaminated aliquot of blood, and may further include a sampling channel that bypasses the sequestration chamber to convey likely uncontaminated blood between the patient needle and the sample needle after the initial aliquot of blood is sequestered in the sequestration chamber.

Needle assemblies and related methods having a needle hub with a needle, a catheter tube with a catheter hub and having the needle extending through the catheter tube, a valve positioned in an interior cavity of the catheter hub, a valve opener proximal of the valve, and a needle guard extending at least partially into the valve opener. The valve opener can be used with a range of needle sizes. The valve opener can be used for forming a sub-assembly while minimizing distortion or compression of a needle guard.

Blood sample optimization systems and methods are described that reduce or eliminate contaminates in collected blood samples, which in turn reduces or eliminates false positive readings in blood cultures or other testing of collected blood samples. A blood sample optimization system can include a blood sequestration device located between a patient needle and a sample needle. The blood sequestration device can include a sequestration chamber for sequestering an initial, potentially contaminated aliquot of blood, and may further include a sampling channel that bypasses the sequestration chamber to convey likely uncontaminated blood between the patient needle and the sample needle after the initial aliquot of blood is sequestered in the sequestration chamber.

Preloaded catheters are manufactured with a stylet, guidewire, or similar medical device disposed within the catheter, extending through a valve of the connector at a proximal end. During storage and transport, the stylet can remain in place for a prolonged period of time, which can cause stretching, indentations, and damage to the valve faces. These indentations can cause the valve leak, resulting in failure of the device as a whole. Embodiments disclosed herein are directed to devices and methods for preventing contact between the medical device and the valve faces, mitigating damage thereto.

A hemostatic valve, a sheath, and a catheter sheath assembly are provided. The hemostatic valve includes a valve body and a spool arranged in the valve body. The spool includes a spool main body and a cover body connected to a distal end of the spool main body. The spool main body defines an axial through hole therein. The cover body is operable to be opened or automatically closed relative to the spool main body to correspondingly deocclude or occlude the axial through hole. The hemostatic valve has an ideal sealing effect, can prevent blood leakage or air entering the human body, has high reliability, and is particularly suitable to be used with a dilator or other diagnostic and therapeutic device with a large diameter.

Needle assemblies and related methods in which a valve opener is used to push into a valve to open one or more slits on the valve to open the valve. The needle assemblies each includes a needle hub with a needle, a catheter tube with a catheter hub and the valve and valve opener positioned in the interior cavity of the catheter hub. The valve can have a valve skirt and a nose section of the valve opener can locate therein. One or more reliefs can be provided with the valve opener so that an elbow or diagonal section on a needle guard can project from a holding space within the valve opener through the relief.

Needle assemblies and related methods having a needle hub with a needle, a catheter tube with a catheter hub and having the needle extending through the catheter tube in a ready to use position. A valve is positioned in an interior cavity of the catheter hub, the valve having sections that can deflect in a distal direction and sections that can deflect in a proximal direction to open a fluid flow path through the valve. The valve can be deflected by a multi-piece valve opener.

An activator attachment that can be attached to the proximal end of a catheter adapter and can activate a blood control valve within the catheter adapter.

Loading tools for use with medical devices are disclosed. An example loading tool may be suitable for use with a drug-coated expandable medical device. The loading tool may include a tubular sleeve having a distal end region, a proximal end region, and a lumen extending therethrough. The distal end region may include a reduced distal tip designed to interact with a hemostasis valve having a resilient seal member.

A catheter assembly includes: an inner needle having a blade surface at a distal end; a catheter through which the inner needle is inserted; a catheter hub through which the inner needle is inserted and that is fixed to a proximal end of the catheter; a valve that comprises a pair of inclined portions that are inclined so as to become closer to each other in a distal direction, an end surface located at distal ends of the pair of inclined portions, and a slit formed along a longitudinal direction of the end surface, wherein the valve is located in an internal space of the catheter hub; and an opening member that is located in the internal space, is formed in a tubular shape, has a space inside, is located proximal of the valve in an initial state, and is configured to move in a distal direction to open the valve.