Pinch clamp device

Patent metadata

Field	Value
Publication number	US-11629790-B2
Application number	US-201816643739-A
Country	US
Kind code	B2
Filing date	Aug 24, 2018
Priority date	Sep 11, 2017
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

A pinch clamp device for a flexible tube is disclosed, the pinch clamp device comprising a first part (2) and a second part (3) that are movable with respect to each other, wherein the first part (2) comprises a first conduit (5) for housing a flexible tube and the second part (3) comprises a second conduit (6) for housing the same flexible tube, wherein the first part (2) and the second part (3) are arranged in an interacting manner such that the pinch clamp device can be present in a first position or in a second position, wherein a flow of a fluid within a flexible tube arranged inside the first conduit (5) and the second conduit (6) is enabled in the first position, and wherein a flow of a fluid within a flexible tube arranged inside the first conduit (5) and the second conduit (6) is prevented in the second position. According to an aspect of the invention, the first part (2) and the second part (3) are designed axisymmetrically. Furthermore, a pinch clamp arrangement comprising such a pinch clamp device is disclosed. Additionally pump arrangement comprising a pump and such a pinch clamp arrangement is disclosed.

First claim

The invention claimed is:

1. A pinch clamp device for a flexible tube, comprising:
a first part and a second part that are movable with respect to each other,
wherein the first part comprises a first conduit for housing the flexible tube and the second part comprises a second conduit for housing the flexible tube, the second part nested within the first part and the second part moveable along an extension direction of the first conduit and the first conduit having an inner wall with a smooth cylindrical surface except for a recess shaped in the smooth surface,
wherein the first part and the second part are arranged in an interacting manner such that the pinch clamp device can be present in a first position and in an alternative second position, wherein a flow of a fluid within the flexible tube arranged inside the first conduit and the second conduit is enabled in the first position, and a flow of a fluid within the flexible tube arranged inside the first conduit and the second conduit is prevented in the second position,
wherein the second part comprises a flexible extension extending along the second conduit, wherein the flexible extension can be present in a relaxed position and in an alternative compressed position, wherein the pinch clamp device is in the first position if the flexible extension is in its relaxed position, and wherein the pinch clamp device is in the second position if the flexible extension is in its compressed position;
wherein the flexible extension has a free end and a protrusion on the free end, wherein the protrusion extends radially away from the second conduit, wherein the protrusion is received in the recess shaped in the smooth surface of the inner wall of the first conduit of the first part if the flexible extension is in the relaxed position and abuts the smooth surface of the inner wall of the first conduit if the flexible extension is in the alternative compressed position; and
wherein the first part and the second part are designed axisymmetrically.

2. The pinch clamp device according to claim 1 , wherein a symmetry axis of the first part extends along the first conduit and/or a symmetry axis of the second part extends along the second conduit.

3. The pinch clamp device according to claim 1 , wherein the first part and the second part are movable with respect to each other by a translational movement of at least one of the first part and the second part.

4. The pinch clamp device according to claim 1 , wherein the first part and the second part are individual components.

5. The pinch clamp device according to claim 1 , wherein the second part comprises a mark that is only visible for a user of the pinch clamp device if the pinch clamp device is in its second position.

6. The pinch clamp device according to claim 1 , wherein the first part and the second part have a different outer design.

7. The pinch clamp device according to claim 1 , wherein the pinch clamp device is unbiased toward the first position or the second position.

8. A pinch clamp arrangement comprising a pinch clamp device and a flexible tube,
wherein the pinch clamp device comprises a first part and a second part that are movable with respect to each other,
wherein the first part comprises a first conduit that houses a section of the flexible tube, and the second part comprises a second conduit that houses a section of the flexible tube, the second part nested within the first part and the second part moveable along an extension direction of the first conduit and the first conduit having an inner wall with a smooth cylindrical surface except for a recess shaped in the smooth surface,
wherein the first part and the second part are arranged in an interacting manner such that the pinch clamp device can be present in a first position and in an alternative second position, wherein a flow of a fluid within the flexible tube is enabled in the first position, and a flow of a fluid within the flexible tube is prevented in the second position,
wherein the second part comprises a flexible extension extending along the second conduit, wherein the flexible extension can be present in a relaxed position and in an alternative compressed position, wherein the pinch clamp device is in the first position if the flexible extension is in its relaxed position, and wherein the pinch clamp device is in the second position if the flexible extension is in its compressed position,
wherein the flexible extension has a free end and a protrusion on the free end, wherein the protrusion extends radially away from the second conduit, wherein the protrusion is received in the recess shaped in the smooth surface of the inner wall of the first conduit of the first part if the flexible extension is in the relaxed position and abuts the smooth surface of the inner wall of the first conduit if the flexible extension is in the alternative compressed position, and
wherein the first part and the second part are designed axisymmetrically.

9. A pump arrangement comprising a pump and a pinch clamp arrangement according to claim 8 that is installed into the pump.

10. The pump arrangement according to claim 9 , wherein the pump is a volumetric pump.

11. The pump arrangement according to claim 9 , wherein the pump is a perfusion pump.

12. The pump arrangement according to claim 8 , wherein the pinch clamp device is unbiased toward the first position or the second position.

Assignees

• Fresenius Vial Sas

Inventors

• Mermet Emeric

Classifications

• A61M2205/6081

  Colour codes · CPC title

• F16K7/065 Primary

  Cam clamps · CPC title

• A61M39/281 Primary

  Automatic tube cut-off devices, e.g. squeezing tube on detection of air · CPC title

• A61M39/284

  Lever clamps · CPC title