Carbon dioxide absorber for a rebreathing system

• US 8,286,633 B2
• Filed: 05/30/2008
• Issued: 10/16/2012
• Est. Priority Date: 06/02/2007
• Status: Expired

• Current Assignee: Dragerwerk AG & Company KGaA (FPS Vermögensverwaltung GmbH)
• Original Assignee: Drager Medical GmbH (FPS Vermögensverwaltung GmbH)
• Inventors: Türker, Ahmet, Lischinski, Robert, Reichert, Dirk-Stefan, Kholtchanski, Grigory, Pasdzior, Sven
• Primary Examiner(s): RICHMAN, GLENN E
• Application Number:
  US12/129,911
• Publication Number:
  US 20080295844A1
• Time in Patent Office: 1,600 Days
• Field of Search: 128/205.12, 128/205.13, 128/205.14, 128/205.24, 128/205.28, 128/204.18, 128/204.2, 128/204.22, 128/204.26, 128/202.27, 128/203.12, 128/203.28, 128/207.12, 555/04, 961/47
• US Class Current: 128/205.28
• CPC Class Codes: A61M 16/22 Carbon dioxide-absorbing devices ; Other means for removing carbon dioxidecartridges with absorbing substances for respiratory apparatus A62B19/00
• CPC Class Codes: A62B 19/00 Cartridges with absorbing substances for respiratory apparatus carbon dioxide absorbing devices A61M16/22
• CPC Class Codes: A62B 9/04 Couplings; Supporting frames
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2259/4533 for medical purposes
• CPC Class Codes: B01D 53/0415 Beds in cartridges
• CPC Class Codes: B01D 53/0446 Means for feeding or distributing gases
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

A carbon dioxide absorber for a rebreathing system can be connected to a connection head of the rebreathing system in a simple manner. A centering device (43, 44, 45, 46), provided in the area of a guide plate (40) of the absorber (4), can be caused to mesh with centering pins pointing in the direction of the absorber from the connection head.

Claims

1. A carbon dioxide absorber for a rebreathing system, the carbon dioxide absorber comprising:

a connection head at the rebreathing system, said connection head including a pivotable mount;

an absorber housing;

a guide plate on a front side of said absorber housing, said guide plate being pushed into said pivotable mount of said connection head;

guide plate gas ducts arranged concentrically at said guide plate;

connection head gas ducts provided in said connection head and with a design corresponding to said guide plate gas ducts, said guide plate gas ducts for connection to said connection head gas ducts;

guide grooves between said guide plate and said absorber housing for connecting said guide plate to said mount;

centering pins pointing in a direction of said absorber housing from said connection head; and

centering means in one or more of said guide plate and said absorber housing, said centering means for meshing with said centering pins from said connection head;

said pivotable mount being pivotable between a first position and a second position, said first position arranging said pivotable mount adjacent said connection head, said second position arranging said pivotable mount spaced from said connection head and said centering pins.

2. A carbon dioxide absorber in accordance with claim 1, wherein said centering means comprises upper positioning grooves arranged opposite each other with corresponding said centering pins in an area of said guide grooves.

3. A carbon dioxide absorber in accordance with claim 2, wherein said centering means further comprises lower positioning grooves at said absorber housing, said lower positioning grooves extending flush with said upper positioning grooves and for meshing with free ends of said centering pins.

4. A carbon dioxide absorber in accordance with claim 1, wherein said centering pins taper towards a free end thereof in a wedge-shaped pattern.

5. A carbon dioxide absorber in accordance with claim 4, wherein:

said centering means comprises upper positioning grooves arranged opposite each other with corresponding said centering pins in an area of said guide grooves; and

an outer contour of said centering pins corresponds to an inner contour of said upper positioning grooves.

6. A carbon dioxide absorber in accordance with claim 4, wherein:

said centering means comprises lower positioning grooves at said absorber housing, said lower positioning grooves for meshing with free ends of said centering pins; and

an outer contour of said centering pins corresponds to an inner contour of said lower positioning grooves.

7. A carbon dioxide absorber in accordance with claim 1, wherein:

said pivotable mount defines an opening;

said centering means defines positioning grooves as part of said centering means, said centering pins passing through said opening of said pivotable mount, and into said positioning grooves of said centering means when said pivotable mount moves from said first position into said second position.

8. A rebreathing system with carbon dioxide absorber comprising:

a rebreathing system connection head including a pivotable mount, said connection head having connection head gas ducts provided in said connection head, said connection head having centering pins pointing outwardly from said connection head;

an absorber housing with a guide plate on a front side of said absorber housing, said guide plate for being pushed into said pivotable mount of said connection head, said guide plate including guide plate gas ducts arranged concentrically at said guide plate with a design corresponding to said connection head gas ducts, said connection head gas ducts for connection to said guide plate gas ducts, guide grooves being provided between said guide plate and said absorber housing for connecting said guide plate to said mount; and

centering means in one or more of said guide plate and said absorber housing, said centering means for meshing with said centering pins from said connection head, said centering means defining upper positioning grooves arranged opposite each other with corresponding said centering pins in an area of said guide grooves, said centering means further defining lower positioning grooves at said absorber housing, said lower positioning grooves extending flush with said upper positioning grooves and for meshing with free ends of said centering pins.

9. A rebreathing system with carbon dioxide absorber in accordance with claim 8, wherein said centering pins taper towards a free end thereof in a wedge-shaped pattern.

10. A rebreathing system with carbon dioxide absorber in accordance with claim 9, wherein:

an outer contour of said centering pins corresponds to an inner contour of said upper positioning grooves.

11. A rebreathing system with carbon dioxide absorber in accordance with claim 9, wherein:

an outer contour of said centering pins corresponds to an inner contour of said lower positioning grooves.

12. A carbon dioxide absorber arrangement in a rebreathing system, the absorber arrangement comprising:

an absorber housing for holding a carbon dioxide absorber material, said absorber housing defining ducts for bringing breathing gas in contact with the carbon dioxide absorber material;

a guide plate mounted on one side of said absorber housing, one of said guide plate and said absorber housing defining a positioning groove;

a pivotable mount adapted to connect to said guide plate, said pivotable mount and said guide plate being shaped to have said guide plate slide into said pivotable mount in a direction along said one side of said absorber housing;

a connection head adapted to connect to the rebreathing system and defining connection head ducts in communication with the rebreathing system, said pivotable mount being pivotally connected to said connection head to bring said ducts of said absorber housing into communication with said ducts of said connection head;

a centering pin extending from said connection head in a direction of said absorber housing, said centering pin cooperating with said positioning groove to align said ducts of said absorber housing with said ducts of said connection head;

said pivotable mount being pivotable between a first position and a second position, said first position arranging said ducts of said absorber housing in communication with said ducts of said connection head, said second position arranging said pivotable mount spaced from said connection head and said centering pin.

13. An absorber arrangement in accordance with claim 12, wherein:

said pivotable mount defines an opening, said centering pin passing through said opening, and into said positioning groove when said pivotable mount moves from said first position into said second position.