Medical fluid therapy machine including pneumatic pump box and accumulators therefore

A technology of accumulator and pneumatic pump, applied in the direction of actuator accumulator, medicine equipment, machine/engine, etc., can solve problems such as electromagnetic valve corrosion

Active Publication Date: 2019-07-26
BAXTER INT INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water present in positive air pressure can cause corrosion in solenoid valves and elsewhere

Method used

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  • Medical fluid therapy machine including pneumatic pump box and accumulators therefore
  • Medical fluid therapy machine including pneumatic pump box and accumulators therefore
  • Medical fluid therapy machine including pneumatic pump box and accumulators therefore

Examples

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Embodiment Construction

[0083] system hardware

[0084]The illustrative examples described herein can be applied to any medical fluid delivery system that delivers medical fluids, such as blood, dialysate, replacement fluid, and / or intravenous drugs ("IV"). These illustrative examples are particularly suitable for renal failure treatments such as all forms of hemodialysis ("HD"), hemofiltration ("HF"), hemodiafiltration ("HDF"), continuous renal replacement therapy ("CRRT") and peritoneal dialysis ("PD"), which are collectively or commonly referred to herein as therapy for renal failure. Additionally, the machines and any pneumatically pumped systems and methods described herein may also be used in clinical or home settings. For example, a machine that includes a pneumatic pumping arrangement can be employed in a central HD machine that runs almost continuously throughout the day. Alternatively, the pneumatic pumping arrangement can be used in a home HD machine that can be run at night, for example...

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Abstract

A medical fluid delivery machine including: a medical fluid pump including a pneumatically actuated pump chamber and first and second pneumatically actuated medical fluid valve chambers located respectively upstream and downstream of the pneumatically actuated pump chamber; a compressor for creating positive pressure air; and an accumulator storing the positive pressure air for delivery to at least one of the pneumatically actuated pump chamber, the first pneumatically actuated medical fluid valve chamber, or the second pneumatically actuated medical fluid valve chamber, the accumulator holding an elastic bladder that inflates under positive pressure air from the compressor, creating additional positive pressure that increases the amount of positive pressure air that the accumulator can provide.

Description

[0001] Cross References to Related Applications [0002] This application calls for U.S. patent application No. .15 / 336, the priority of 266, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure generally relates to devices, systems and methods for medical fluid conveyor machines. More specifically, the present disclosure relates to medical fluid delivery machines employing pneumatic pumping, such as kidney failure treatment machines. Background technique [0004] Regarding the kidney failure treatment machine, due to various reasons, a person's kidney system may decline. Renal failure produces a variety of physiological disturbances. No longer able to balance water and minerals or excrete daily metabolic load. Toxic end products of nitrogen metabolism (urea, creatinine, uric acid, etc.) can accumulate in the blood and tissues. [0005] Dialysis has been used to treat kidney failure and reduced kidney function. Dial...

Claims

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Application Information

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IPC IPC(8): A61M1/14
CPCF04B41/06F04B41/02F04B37/14F04B37/12F04B37/18F04B39/16F04B39/066F04B39/121F04B39/10A61M1/3496A61M39/22A61M1/3413A61M1/267A61M1/28A61M1/14A61M1/34A61M2205/07F04B43/073F04B23/08F04B7/0275F04B9/123F15B2201/3156F15B1/04F04B43/06F15B2201/40F15B2201/3152F15B2201/405F04B9/12F04B9/1276F04B53/10F04B53/06F04B23/02
Inventor查尔斯·韦恩·博伊兰
OwnerBAXTER INT INC