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Pumping devices, systems including multiple pistons and methods for use with medical fluids
US8944780B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8944780-B2 |
| Application number | US-201113071939-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 25, 2011 |
| Priority date | Mar 25, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A system for delivery of medical fluid to a patient which includes a pump system and a drive system. The pump system has at least three chambers, where each chamber includes an inlet for fluid intake and an outlet for fluid expulsion, a common outlet channel in fluid communication with the outlet of each chamber, and at least three pistons, where each piston is slidably disposed within one of the chambers. The drive system includes a cam shaft having at least three cam lobes, each having a profile, and at least three cam lobe followers, each in operative connection with one of the cam lobes and adapted to be placed in operative connection with a respective piston. The profile of each of the cam lobes is adapted to provide a transient increase or spike in calculated theoretical output of the pump system to reduce periodic variation in measured output thereof.
First claim
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What is claimed is: 1. A system for delivery of a medical fluid to a patient, the system comprising: a pump system comprising: a plurality of at least three chambers, each of the plurality of chambers comprising an inlet through which fluid is drawn into each of the chambers and an outlet from which fluid is expelled from each of the chambers; a fluid intake system in fluid connection with the inlets of the plurality of at least three chambers, the fluid intake system comprisi…
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- What does patent US8944780B2 cover?
- A system for delivery of medical fluid to a patient which includes a pump system and a drive system. The pump system has at least three chambers, where each chamber includes an inlet for fluid intake and an outlet for fluid expulsion, a common outlet channel in fluid communication with the outlet of each chamber, and at least three pistons, where each piston is slidably disposed within one of t…
- Who is the assignee on this patent?
- Reilly David M, Bayer Medical Care Inc
- What technology area does this patent fall under?
- Primary CPC classification F04B9/02. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).