Renal failure therapy machines and methods including conductive and convective clearance
US-9216246-B2 · Dec 22, 2015 · US
Device and method for monitoring an access to a patient
US9308312B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9308312-B2 |
| Application number | US-67381108-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 20, 2008 |
| Priority date | Aug 22, 2007 |
| Publication date | Apr 12, 2016 |
| Grant date | Apr 12, 2016 |
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Abstract
Official abstract text for this publication.
The present invention relates to a device and a method for monitoring a patient access, particularly for monitoring the venous vascular access in extracorporeal blood treatment where blood is withdrawn from the patient via a flexible arterial line which has an arterial needle or cannula, and provided to the patient via a flexible venous line which has a venous needle or cannula. The needle or cannula of the present invention is so designed that, due to the liquid flowing through the needle or cannula, air is drawn in if the needle or cannula is out of the vascular access, whereby sound is generated. A vascular access which is not in proper order is detected with great certainty and reliability by monitoring the surrounding environment for the occurrence of sound, particularly for the occurrence of the solid-borne sound which propagates along the flexible venous line of the extracorporeal blood circuit.
First claim
Opening claim text (preview).
The invention claimed is: 1. A device for monitoring an access to a patient of an apparatus by which a liquid is provided to the patient via a needle or cannula comprising: a needle or cannula comprising a narrowed cross-section comprising a constriction for flow to generate a pressure below atmospheric due to the liquid flowing through the needle or cannula, wherein cross-sections on both sides of the narrowed cross-section are wider than the narrowed cross-section, said narrowed…
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Human Necessities · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
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Frequently asked questions
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- What does patent US9308312B2 cover?
- The present invention relates to a device and a method for monitoring a patient access, particularly for monitoring the venous vascular access in extracorporeal blood treatment where blood is withdrawn from the patient via a flexible arterial line which has an arterial needle or cannula, and provided to the patient via a flexible venous line which has a venous needle or cannula. The needle or c…
- Who is the assignee on this patent?
- Heide Alexander, Klewinghaus Jürgen, Langkau Wolfram, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification A61M1/3656. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Apr 12 2016 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).