Infusion pump

• US 20040022655A1
• Filed: 06/20/2003
• Published: 02/05/2004
• Est. Priority Date: 06/21/2002
• Status: Active Grant

• Current Assignee: B Braun Melsungen AG (B. Braun Holding GmbH & Co. KG)
• Original Assignee: B Braun Melsungen AG (B. Braun Holding GmbH & Co. KG)
• Inventors: Lutz, Ronald, Knuth, Reinhard, Schacht, Bodo
• Granted Patent: US 7,121,815 B2
• Time in Patent Office: Days
• US Class Current: 417/477.1
• CPC Class Codes: A61M 2205/6045 having complementary physical shapes for indexing or registration purposes
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: F04B 43/0072 of tubular flexible members
• CPC Class Codes: F04B 43/082 the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
• CPC Class Codes: F16L 33/20 Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members

Abstract

An infusion pump has a housing (10) accommodating a pump finger mechanism (12). The pump finger mechanism (12) acts on a pump hose (13) fastened at holders (16, 21) of the housing. The pump hose (13) is supported by a door (24). In order to facilitate proper and positionally correct placement of the pump hose, one of the holders (16) includes an oblique pin. The associated transition piece (15) of the pump hose (13) has a hole (18) with the same inclination angle as the oblique pin. The other transition piece (20) is of a different structure so that the transition pieces cannot be mixed up. A longitudinal color strip (29) on the pump hose is provided to visually indicate any twisting of the hose.

Claims

1. An infusion pump comprising:

a pump hose (13) having two transition pieces (15, 20) at opposite ends, respectively, of the pump hose;

a housing (10) accommodating a pump finger mechanism (12) and having two holders (16, 21) for fastening the two transition pieces (15, 20), a door (24) provided at the housing (10) and forming a counter bearing for supporting the pump hose (13); and

wherein at least one of the holders (16) mates with the associated transition piece (15) via at least a combination of an oblique pin (17) and an oblique hole (18) to be slipped onto the oblique pin, the pin (17) and the hole (18) being inclined the same with respect to the longitudinal axis of the placed pump hose (13).

2. The infusion pump of claim 1, wherein the oblique pin (17) is provided at the holder (16) and the oblique hole (18) is provided at the transition piece (15).

3. The infusion pump of claim 2, wherein the holder (16) has two parallel oblique pins (17) and the transition piece (15) has two parallel holes (18).

4. The infusion pump of claim 1, wherein the holder (16) has two parallel oblique pins (17) and the transition piece (15) has two parallel holes (18).

5. The infusion pump of claim 1, wherein the door (24) is provided with recesses (28) for receiving the ends of the pins (17).

6. The infusion pump of claim 1, wherein the other transition piece (20) comprises a locking clamp (22) engaging over a web of the housing (10).

7. The infusion pump of claim 1, wherein the pump hose (13) has a longitudinal color strip (29) for detecting hose twisting.

8. A pump hose, especially for an infusion pump of claims 1, 2, 3, 4, 5, 6 or 7, further comprising a length (14) of hose with a respective transition piece (15, 20) at opposite ends, wherein at least one of the transition pieces (15) has two half shells (36, 37) connected by a hinge portion (31), a tubular pin (30) projecting from the hinge portion (31), and the half shells (36, 37) having flanges (33, 34) adapted to be abutted against and connected with each other, the flanges clampingly enclosing the end of the length (14) of hose slipped on the tubular pin (30).

9. The pump hose of claim 8, wherein the transition piece (15) is an integral plastic part.