Flow component for medical infusion / transfusion lines

• US 20060108008A1
• Filed: 11/22/2005
• Published: 05/25/2006
• Est. Priority Date: 11/24/2004
• Status: Active Grant

• Current Assignee: Industrie Borla S.P.A. (Carla Finanziaria SRL)
• Original Assignee: Industrie Borla S.P.A. (Carla Finanziaria SRL)
• Inventors: Guala, Gianni
• Granted Patent: US 7,556,060 B2
• Time in Patent Office: Days
• US Class Current: 137/605
• CPC Class Codes: A61M 2039/242 designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid
• CPC Class Codes: A61M 2039/2433 Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
• CPC Class Codes: A61M 2039/246 being fixed along all or a part of its periphery
• CPC Class Codes: A61M 2039/2493 Check valve with complex design, e.g. several inlets and outlets and several check valves in one body
• CPC Class Codes: A61M 39/02 Access sites
• CPC Class Codes: A61M 39/24 Check- or non-return valves
• CPC Class Codes: Y10T 137/87281 System having plural inlets
• CPC Class Codes: Y10T 137/87346 Including mixing feature
• CPC Class Codes: Y10T 137/87643 With condition responsive valve
• CPC Class Codes: Y10T 137/87676 With flow control

Abstract

A flow component for medical infusion/transfusion lines comprises a main duct and a lateral tubular connection containing a one-way valve, in an area corresponding to which the main duct has an axial section with a wall having a convergent-divergent profile.

Claims

1. A flow component for medical infusion/transfusion lines comprising a main duct having a lateral tubular connection communicating with the main duct through a one-way valve to enable introduction of a secondary liquid within said main duct, wherein said main duct has, in an area corresponding to said one-way valve, an axial section with a wall having a convergent-divergent profile.

2. The flow component according to claim 1, wherein said one-way valve includes an elastic-diaphragm open-close element housed within a chamber, arranged between said main duct and said lateral connections, and normally set in hermetic contact against an annular valve seat of said lateral connections, said elastic diaphragm being designed to be moved away from said valve seat upon application of an overpressure within said lateral connection to open the communication between said lateral connection and said main duct through said chamber;

said chamber communicating with said axial section having a convergent-divergent profile of the main duct through a first passage situated in an area corresponding to the convergent profile and a second passage situated in an area corresponding to the divergent profile of said section.

3. The flow component according to claim 1, wherein said section having a convergent-divergent profile is defined by a localized restriction of said main duct.

4. The flow component according to claim 3, wherein said localized restriction is rounded.

5. The flow component according to claim 2, wherein said section having a convergent-divergent profile is defined by a localized restriction of said main duct.