A catheter includes a first lumen and a second lumen in which fluid flows, and a longitudinal end part including a body portion having a constant diameter and a nozzle portion extending from a longitudinal end of the body portion with a gradually reducing diameter. A side surface of the body portion includes cavities fluidly communicating with the first lumen and the second lumen.

A closed device for introducing preservative-free insulin into the intraperitoneal space is presented. In embodiments, the closed device includes an insulin reservoir configured to store preservative-free insulin, a pump connected to the reservoir, and an antimicrobial inlet filter connected to an inlet of the reservoir or provided in an inlet flow path in fluid communication with the reservoir. The device is configured to be disposed in the intraperitoneal space of a body, and to discharge preservative-free insulin into a peritoneal space of the body. In some embodiments, the device includes a second antimicrobial filter, provided at an outlet of the reservoir. In some embodiments, the device further includes a header in fluid communication with the outlet path, and a third antimicrobial filter, provided in the header.

A peripheral catheter having a catheter tip diffuser for reducing an exit velocity of an infusant within the catheter. Pluralities of diffusion side holes are provided on the tip portion of the catheter. Some examples further include pluralities of annularly arranged, staggered diffusion holes provided on the tip portion of an intravenous catheter to streamline infusant issued from the diffusion holes. An inner surface of each diffusion hole is further angled relative to the inner surface of the catheter lumen such that an infusant within the lumen exits the catheter though the diffusion holes at an angle less than 90°.

A dual tip dialysis catheter has a proximal portion with connected lumens and a distal portion with diverging lumens. The lumens may separate at a split junction and diverge in a scissors like manner to reduce or eliminate a crack or gap adjacent to the split junction, thereby reducing clotting. A dual tip dialysis catheter may have forward openings configured to direct flow in opposite directions.

An assembly for delivering a therapeutic agent includes a catheter and a supply system. The catheter includes a catheter body having a first lumen extending from a proximal end to a distal end and defining a longitudinal axis, and a first outlet adjacent to the distal end and in fluid communication with the first lumen. The supply system includes an inlet port for a carrier fluid, an inlet port for the agent, and an output port in fluid communication with the two inlet ports and the first lumen at the proximal end. The supply system further includes a fluid path from one inlet port to the output port having a constriction in vicinity of the other inlet port configured to aspirate the agent by Venturi effect. The catheter includes a valve arranged adjacent the one outlet and in fluid communication with the first lumen.

A peripheral catheter having a catheter tip diffuser for reducing an exit velocity of an infusant within the catheter. Pluralities of diffusion side holes are provided on the tip portion of the catheter. Some examples further include pluralities of annularly arranged, staggered diffusion holes provided on the tip portion of an intravenous catheter to streamline infusant issued from the diffusion holes. An inner surface of each diffusion hole is further angled relative to the inner surface of the catheter lumen such that an infusant within the lumen exits the catheter though the diffusion holes at an angle less than 90°.

The present invention presents a medical instrument for penetrating cutaneous and sub-cutaneous tissue, causing less hemorrhage and patient pain. This medical device for insertion into tissue comprising one or more section, said section including a plurality of facets; and each facet is configured to deflect the tissue it contacts in a direction that is different than adjacent facets.

Cannula for fluid perfusion comprising a tubular body extending from a proximal portion to a distal portion thereof, the tubular body being provided with an internal cavity defining a first opening in the distal portion allowing a fluid to exit the cavity in a first direction, the tubular body comprising a connection portion lying between the proximal and distal portions, the connection portion being designed to be inserted into a blood vessel by the distal portion. The cannula furthermore comprises a duct extending from a first end to a second end thereof, the second end being provided with an auxiliary opening placed at the connection portion so as to allow a fluid to exit the duct in a second direction opposite to the first direction. The first end is placed in fluid communication with the cavity so that a fluid flowing in the cavity toward the first opening flows at least in part into the duct, said duct being provided with a valve device designed to shut off, or allow, the flow of a fluid flowing through the duct from one end to the other thereof, depending on whether the valve device is in a first configuration or a second configuration, respectively.

In one aspect, a connector assembly includes a delivery conduit defining a conduit lumen and a securable connector configured to secure the delivery conduit to a medical device hub defining a medical device hub lumen. The conduit lumen includes a constant diameter region along a portion of the delivery conduit and a transition region extending from the delivery conduit to the distal end. A transition region diameter of the transition region gradually increases from the constant diameter region to a distal end of the delivery conduit. The securable connector is coupled to an outer surface of the delivery conduit and is slidable along a portion thereof. The securable connector is configured to receive the medical device hub. The securable connector is secured relative to the delivery conduit so as to fluidically couple the conduit lumen with the medical device hub lumen.

An end effector of an electrosurgical device may include a discharge port in communication with a first fluid path, an aspiration port in communication with a second fluid path, a first and second electrode, and a diverter in mechanical communication with the two electrodes. The diverter may receive, on its surface, a fluid emitted by the discharge port, and maintain a contact of the fluid with the first and second electrodes. The diverter may be further configured to prevent an aspiration, by the aspiration port, of the fluid on its surface. An electrosurgical device may include a source port in communication with a first fluid path, an evacuation port in communication with a second fluid path, a first and second electrode, and a housing. The device may include a shaft extending distally from the housing and the end effector as described above.