Peristaltic infusion pump with locking mechanism

• US 10,184,615 B2
• Filed: 05/21/2017
• Issued: 01/22/2019
• Est. Priority Date: 11/24/2004
• Status: Active Grant

• Current Assignee: Eitan Medical Limited
• Original Assignee: Q Core Medical Ltd.
• Inventors: Rotem, Shachar, Goldor, Ori
• Primary Examiner(s): Hamo, Patrick
• Application Number:
  US15/600,740
• Publication Number:
  US 20170254482A1
• Time in Patent Office: 611 Days
• CPC Class Codes: A61M 39/281 Automatic tube cut-off devices, e.g. squeezing tube on detection of air
• 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: A61M 5/16813 by controlling the degree of opening of the flow line
• 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: F04B 43/12 having peristaltic action
• CPC Class Codes: F17D 3/00 Arrangements for supervising or controlling working operations
• CPC Class Codes: Y10T 137/0318 Processes
• CPC Class Codes: Y10T 137/85978 With pump

Abstract

A medical device includes an interface unit body, which is configured to hold a portion of a flexible infusion tube. A hinge insert is fixed to the interface unit body and is configured to engage a hinge receptacle, which defines a hinge axis, on an infusion pump. A catch insert is fixed to the interface unit body and is configured to lock onto a catch receptacle on the infusion pump upon rotation of the mechanical interface unit about the hinge axis while the hinge insert engages the hinge receptacle, so as to bring the tube into engagement with a peristaltic mechanism of the infusion pump in order to enable the peristaltic mechanism to propel a fluid through the tube.

Claims

1. An infusion system comprising:

a removable mechanical interface unit to support in a fixed position a tube through which a fluid flows;

a device body comprising a hinge receptacle defining a hinge axis;

a catch receptacle configured to receive said mechanical interface unit through which the tube passes; and

a peristaltic pump connected to said body and positioned to propel fluid through the tube when the mechanical interface unit is engaged within said receptacle;

wherein said mechanical interface unit comprises;

an anti-free flow mechanism biased towards a safety default closed state to prevent flow of fluid through the tube when said interface unit is disengaged from said receptacle, and which anti-free flow mechanism is mechanically forced into an opened state by;

(a) a key structure functionally associated with said receptacle and which applies a force on said anti-free flow mechanism when said interface unit is engaged, and (b) a manual override structure functionally associated with said anti-free flow mechanism is reconfigured it into a default open state;

a hinge insert configured to engage said hinge receptacle; and

a catch insert configured to lock onto the catch receptacle upon rotation of the mechanical interface unit about the hinge axis while the hinge insert engages the hinge receptacle, so as to bring the tube into engagement with the peristaltic mechanism.

2. The system of claim 1, further comprising a door configured to prevent axial motion of the tube.

3. The system of claim 1, wherein said key structure is embedded on said catch receptacle.

4. The system of claim 1, wherein said peristaltic pump includes multiple fingers.

5. The system of claim 1, wherein said key is fixed to said body.

6. The system of claim 5, wherein said body encases said catch receptacle and said peristaltic pump.

7. The system of claim 1, further comprising a rim surrounding the peristaltic mechanism.

8. The system of claim 7, further comprising a door, configured to close over the rim so as to enclose the peristaltic mechanism and to prevent unintentional detachment of the mechanical interface unit from the pump body.

9. The system of claim 8, wherein said rim comprises openings shaped to receive the tube so that the tube extends through the openings when said door is closed.