Abstract:
The present invention safety device is a one-piece needle assembly that has a base and a housing pivotally connected to the base. The base has a distal portion to which a needle is fitted. At the base there is formed longitudinally along its distal portion a catch mechanism that may be in the form of an anchor projection. At the back wall of the housing there is extended another catch mechanism that may be configured in the form of two clasping fingers. Also providing in the housing is an integral hook. As the housing and the base are pivoted relative to each other, and as the needle makes contact with the hook, the respective catch mechanisms at the base and the housing also make contact with each other, resulting in the coupling of the catch mechanisms and the coupling of the needle to the hook. As a result, the catch mechanisms are interlocked and the needle is fixedly retained by the hook within the housing. The catch mechanisms may also be configured as a hook and a latch in the form of a rib with an opening whereto the hook is fixedly coupled. The catch mechanisms may further be configured as respective interlockable pairs of loops and bosses. The gauge of the needle may be determined by the color of both the base and the housing, which are molded as a unitary single unit.
Abstract:
A catheter assembly includes a catheter hub defining an interior cavity and a catheter tube extending distally thereof. A rigid actuator extends proximally in the interior cavity and supports a seal member thereon. The seal member includes a central membrane, a distal portion, and a proximal portion. An hourglass shaped actuator cavity is formed in the distal portion and receives a barbed end of the actuator. The outer surface of the seal member is in partial circumferential engagement with the catheter hub to define an air path that allows fluid communication between areas of the interior cavity distal and proximal of the seal member. A punch tool is provided to form a tri-slit in the membrane of the seal member.
Abstract:
An implantable portal includes a septum that has embedded therein an indicia adapted to identify at least one characteristic of the portal. The indicia may be formed as an impression at a base layer of the septum, and is filled with a radiopaque material. The septum base layer is covered by liquid silicone, which bonds with the septum base layer when solidified, so that an integral one-piece septum, with the identifier indicia embedded therein, is effected. The indicia embedded septum is fitted to the reservoir housing of the portal for providing identification information for that portal. The septum embedded indicia is viewable visually and also by x-ray or computer tomography imaging.
Abstract:
A system for occlusion detection, including a cartridge containing an infusate, a plunger driven by a drive mechanism configured to be advanced within the cartridge to expel infusate from the cartridge, a force sensor configured to sense an actual force exerted by the plunger, and a control unit configured to determine an estimated force based on an expected decay in frictional force between the plunger and the cartridge for comparison to the actual force sensed by the force sensor, wherein a deviation between the estimated force and the actual force exceeding a threshold triggers an occlusion alarm.
Abstract:
A port is adapted to be implanted to a body with its top exposed to the environment. The port has a housing defining a chamber that has an opening at the top of the housing. An aperture having a lumen attached thereto is formed at the lower portion of the chamber. For infusion, an insert that has an internal passageway that connects a fluid inlet at its top surface and a bore at its sidewall is sealingly mated to the chamber. The bore sealingly aligns with the aperture. After infusion, the insert is removed, and a blank insert is fitted to the chamber. A band of tissue ingrowth media encircles the housing to form an aseptic barrier where the outer wall of the housing and the tissue of the body encircling the housing meet.
Abstract:
An infusion pump including an administration set configured to provide a fluidic pathway between a supply of infusate and an infusion set, at least one pressure sensor configured to sense a pressure of infusate within the administration set, and a control unit configured to monitor the sensed pressure, and apply a calculated tare adjustment to the monitored pressure to compensate for a decay of observable stress within the administration set as a result of stress relaxation.
Abstract:
A catheter hub of a safety needle assembly that includes a multiuse valve uses a proximal portion of the catheter as an actuator to open the partition membrane of the valve when the valve is subjected to an external biasing force. In another embodiment, the actuator is formed as an integral component of the catheter hub.
Abstract:
A catheter hub of a safety needle assembly that includes a multiuse valve uses a proximal portion of the catheter as an actuator to open the partition membrane of the valve when the valve is subjected to an external biasing force. In another embodiment, the actuator is formed as an integral component of the catheter hub.
Abstract:
Infusion pumps and associated methods for delivering medicament to a user during error conditions. An infusion pump can include a sensor, a pumping mechanism to deliver medicament through an infusion set to the user, and a processor operably coupled to the sensor and the pumping mechanism. The processor can be configured to receive an indication from the sensor of an error condition, and continue operating the pumping mechanism to deliver a predetermined quantity of medicament without correcting the error condition. The predetermined quantity can be based at least in part on a characteristic of the infusion set.
Abstract:
A syringe pump configured to at least partially surround a syringe loaded into the pump. The syringe pump including a syringe pump housing defining a syringe receptacle shaped and sized to accept loading of the syringe, a plunger driver assembly configured to manipulate a plunger of a syringe loaded into the syringe pump, and a syringe housing including a syringe barrel shield pivotably coupled to the syringe pump housing configured to at least partially enclose a syringe loaded into the syringe pump within the syringe receptacle, and a syringe plunger tray and lid assembly operably coupled to the syringe pump housing and configured to at least partially enclose a portion of the plunger driver assembly.