Abstract: This invention discloses a peristaltic pump composed of a two-stage linear peristaltic pump mechanism, which engages in different functions, charging and pumping a fluid to a patient. This peristaltic pump is capable of restoring the crushed tubing, caused by repeated compression or crushing of the tubing by peristaltic fingers, to its original circular cross sectional area so that it can provide a precise flow rate. The two-stage linear peristaltic pump mechanism substantially improves the consistency of a flow rate over time and extends the usefulness of peristaltic pumps to applications where they could not otherwise be used.

Abstract: This invention discloses a peristaltic pump composed of a two-stage linear peristaltic pump mechanism, which engages in different functions, charging and pumping a fluid to a patient. This peristaltic pump is capable of restoring the crushed tubing, caused by repeated compression or crushing of the tubing by peristaltic fingers, to its original circular cross sectional area so that it can provide a precise flow rate. The two-stage linear peristaltic pump mechanism substantially improves the consistency of a flow rate over time and extends the usefulness of peristaltic pumps to applications where they could not otherwise be used.

Abstract: The present invention provides an apparatus, a method, and a system with which a user can easily and precisely select unlimited displaying data and enter text information on a touch screen with a small dimension. The user touch screen interface device comprises a first member, a selection member, an actuation member, and a detent mechanism. Means to response to selection and actuation of stored application data are also disclosed.

Abstract: The present invention provides an infusion pump control system comprises a plurality of computing components positioned on discrete hardware modules to complete an infusion task. Those discrete processors, which are internally redundant and communicate through a common medium that provides for redundancy of the communication ability to react to internal failures in a known manner, implement capabilities specific to infusion pump functions, to complete an infusion task. Also, this invention provides automatically switchable redundant power supplies and a new mechanism for firmware provisioning using multi-dropped JTAG for a plurality of computing components.

Abstract: A pneumatic syringe driver having a control module for regulating pressure applied to the plunger of an associated syringe is disclosed. The syringe driver is adapted for receiving a compressed gas canister and for enabling the selective release of gas from the canister into a chamber, one wall of which being formed by the syringe plunger via a three-way valve. The valve also enables the selective venting of gas from the canister into the atmosphere, thereby forming a venturi which reduces the pressure in the chamber and causes the syringe plunger to be withdrawn into the chamber. A pressure sensor in communication with the control module is provided for pressure feedback. Pushbuttons or switches in communication with the control module are provided for defining the syringe driver operation. The device is suited for the selective inflation and deflation of a balloon attached to the syringe driver for a balloon angioplasty procedures.

Abstract: A processor driven syringe pump for one or more, typically two syringes, which are held vertically in corresponding pumping stations of a housing unit which itself is typically suspended from an IV pole. The pump features a central display having portions corresponding to each of the syringes operated by the pump. A data entry knob cooperative with a display processor, causes a cursor issue on the display to step through and choose the menu selections. A function knob is operative to select five operating states including: Purge, Setup, Stop, Run and Bolus in a virtual or software driven manner. The syringe holding station includes a pusher assembly having plunger clamp assembly and a load cell to measure force exerted on the plunger flange. An actuation pad and associated linkage provides for easy syringe flange capturing, while a syringe barrel clamp provides for easy syringe loading and secure syringe barrel positioning for many sizes of syringe.