Extracorporeal blood circuit reservoir with angled venous inlet luer port

A technology of extracorporeal blood circuit and inlet end, applied in the field of blood reservoir

Active Publication Date: 2014-11-12
MEDTRONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In situations where the main venous flow includes gas bubbles, this turbulence may brea

Method used

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  • Extracorporeal blood circuit reservoir with angled venous inlet luer port
  • Extracorporeal blood circuit reservoir with angled venous inlet luer port
  • Extracorporeal blood circuit reservoir with angled venous inlet luer port

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Embodiment Construction

[0021] Figure 1A with Figure 1B Shown therein is an extracorporeal blood circuit reservoir 20 according to the principles of the present invention. The blood reservoir 20 includes a housing 22 and a venous access assembly 24. In some embodiments, the blood reservoir of the present invention can be used as a combined cardiotomy and venous blood reservoir, Figure 1A with Figure 1B The optional cardiotomy assembly 26 is shown. The details of each component are provided below. However, generally, the housing 22 defines the main chamber 28. The venous inlet assembly 24 is held by the housing 22 and forms a venous chamber 30 through which venous blood flow from the hypovenous tube 32 is introduced into the main chamber 28. One or more luer ports 34 extend from the hypovenous tube 32 and facilitate the delivery of blood from other auxiliary circuit components into the hypovenous tube 32. When installed, the cardiotomy assembly 26 is also held by the housing 22, and a cardiotomy c...

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PUM

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Abstract

An extracorporeal reservoir device including a housing, a venous inlet sub-assembly, and a venous filter. The venous sub-assembly is mounted to the housing and includes a downtube and a luer port connector body. The connector body extends from the downtube and forms a passageway open to a lumen of the downtube. The connector body is arranged such that fluid flow from the passageway merges with a flow path of fluid along the primary lumen at an angle of less than 90°. Secondary blood flow through the port connector body is less likely to induce turbulent flow into venous blood flow within the downtube, and is thus less likely to break up any bubbles carried by the venous blood. For example, at port flow rates of less than 500 mL/minute, fluid flow from the port connector body does not induce turbulent flow into fluid flowing through the primary lumen.

Description

Background technique [0001] The invention relates to a blood reservoir for an extracorporeal blood circuit. More specifically, the present invention relates to blood reservoirs that combine blood flow from a main venous source and an auxiliary source and are used in various perfusion systems. [0002] In many surgical procedures, the functions of the heart and lungs are performed outside the body by specialized devices such as membrane oxygenators, heart assist pumps, and heat exchangers. This set of equipment is operated by an extracorporeal circulation therapist who supervises the removal and return of the patient's blood during the surgical procedure. The patient's blood is stored in the venous blood reservoir, which is built between the vena cava plug and the pump of the heart-lung machine, which pumps the blood through the oxygenator and back to the patient's aorta. The venous blood reservoir is also used as a fluid buffer in the external circulatory system to eliminate the...

Claims

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Application Information

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IPC IPC(8): A61M1/36
CPCA61M1/3627A61M1/3632A61M1/3633A61M1/367B01D35/02
Inventor M·格劳斯E·布恩N·尼亚H·帕姆
Owner MEDTRONIC INC
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