摘要:
An implantable medical device is configured with a pressure sensor arranged within the device to reliably and accurately measure the pressure within a propellant gas chamber at least partially surrounding a therapeutic fluid reservoir of the device. In one example, a housing of the IMD includes a protrusion that is configured to provide clearance for fluid communication between a propellant gas chamber pressure sensor and the propellant gas chamber.
摘要:
A method comprises measuring a volume of fluid delivered per pump stroke for each of a plurality of substantially identical medical pumps. The substantially identical medical pumps each have a fixed stroke length. The method further comprises: storing indications of the measured volumes on one or more data storage mediums; and for each of the plurality of substantially identical medical pumps, generating a separate therapy control program based on the indication of the measured volume associated with that one of the plurality of substantially identical medical pumps.
摘要:
A side stream monitoring device for a main unit such as a vessel, which effectively has the same geometrical and dynamic characteristics as those corresponding components in the vessel for enabling the side stream monitor to provide a ready indication and continuous monitor of the performance characteristics and quality of the corresponding components in the vessel, upon removal and testing or examination of the device. The apparatus and method for monitoring have particular utility in connection with clay filters or filter separators which are used for the removal of contaminants from, e.g. jet fuels. In each case a bypass side stream is disposed between the inlet and outlet lines of the filter or filter separator and located within the bypass line is a device which effectively is a reduced scale replica of a portion of the main unit which corresponds to the critical operating components thereof. For the clay filter a duplication of flow velocities and residence times of the fuel through a predetermined section of one of the main filter elements is reproduced. In the case of the filter separator, the side stream device comprises sections which are comprised of identical elements used in the main unit, including metal screens, fiber sheets, fiberglass screens, etc., except that each component of the side stream monitor is of a reduced size such that the ratio of the cross-sectional area to the liquid flow is the same as that which exists in the main unit for that particular component.
摘要:
A method comprises measuring a volume of fluid delivered per pump stroke for each of a plurality of substantially identical medical pumps. The substantially identical medical pumps each have a fixed stroke length. The method further comprises: storing indications of the measured volumes on one or more data storage mediums; and for each of the plurality of substantially identical medical pumps, generating a separate therapy control program based on the indication of the measured volume associated with that one of the plurality of substantially identical medical pumps.
摘要:
A miniature infusion pump (MIP) suitable for use with a human patient is configured for non-human animal testing. In one example, a MIP includes an electromagnetic piston pump, a circuit board, and a housing. The pump is configured to deliver a therapeutic agent from a reservoir through an implantable catheter. The circuit board includes programmable electronics configured to control the pump to deliver the therapeutic agent through the catheter. The pump and the circuit board are sealed within the housing. The MIP is sized to be at least one of harnessed to or implanted in a non-human test subject including a weight greater than or equal to approximately 150 to approximately 250 grams.
摘要:
A method comprises measuring a volume of fluid delivered per pump stroke for each of a plurality of substantially identical medical pumps. The substantially identical medical pumps each have a fixed stroke length. The method further comprises: storing indications of the measured volumes on one or more data storage mediums; and for each of the plurality of substantially identical medical pumps, generating a separate therapy control program based on the indication of the measured volume associated with that one of the plurality of substantially identical medical pumps.
摘要:
A medical pump subassembly comprises a magnetic cup forming a recess. The magnetic cup includes a protrusion within the recess. The cup forms a central aperture through the protrusion. The medical pump subassembly further comprises an electromagnetic coil within the recess and circumscribing the protrusion, a weld ring surrounding the recess, a barrier plate covering the recess, and a seal between the weld ring and the barrier plate to fluidically separate an interior of the cup from an external surface of the barrier plate.
摘要:
An implantable medical device comprises a fluid reservoir configured to store a therapeutic agent; a port configured to deliver the therapeutic agent to a patient; a medical pump subassembly configured to actively transfer the therapeutic fluid from the fluid reservoir to the port; and a housing that contains the fluid reservoir, the port and the medical pump subassembly. The medical pump subassembly is configured to facilitate mechanical and electrical testing of the medical pump subassembly as a standalone component.
摘要:
An implantable medical device is configured with a pressure sensor arranged within the device to reliably and accurately measure the pressure within a propellant gas chamber at least partially surrounding a therapeutic fluid reservoir of the device. In one example, a housing of the IMD includes a protrusion that is configured to provide clearance for fluid communication between a propellant gas chamber pressure sensor and the propellant gas chamber.
摘要:
A method comprises measuring a volume of fluid delivered per pump stroke for each of a plurality of substantially identical medical pumps. The substantially identical medical pumps each have a fixed stroke length. The method further comprises: storing indications of the measured volumes on one or more data storage mediums; and for each of the plurality of substantially identical medical pumps, generating a separate therapy control program based on the indication of the measured volume associated with that one of the plurality of substantially identical medical pumps.