Pinch obturating device for a flexible tube

• US 6,364,279 B1
• Filed: 10/05/2000
• Issued: 04/02/2002
• Est. Priority Date: 05/03/1996
• Status: Expired due to Fees

• Current Assignee: Debiotech S.A.
• Original Assignee: Debiotech S.A.
• Inventors: Bouvier, Bernard, Neftel, Frédéric
• Primary Examiner(s): Shaver, Kevin
• Assistant Examiner(s): KEASEL, ERIC S
• Application Number:
  US09/679,960
• Time in Patent Office: 544 Days
• Field of Search: 251/4, 251/9, 251/90, 251/95, 251/98, 604/32, 604/34, 604/248, 604/250
• US Class Current: 251/9
• CPC Class Codes: A61M 39/287 Wedge formed by a slot having varying width, e.g. slide clamps

Abstract

The invention relates to a closure device for closing a hose by pinching, and in particular for closing a flexible tube or hose used in the medical field. Essentially, the device comprises a closure piece (62) provided with a circularly arcuate slot (70) which is extended by a circular orifice (76). The closure piece (62) can be rotated about a point O on a circle of radius (R) equal to the radius of the slot (70).

Claims

1. A closure device, comprising:

a housing, a first hose, a second hose, a first cylindrical nozzle secured to said housing for connection to said first hose and a second cylindrical nozzle secured to said housing for connection to said second hose, said first and second nozzles extending from said housing in a substantially parallel, side-by-side relationship; and

a moving closure piece rotatably connected to said housing about said first nozzle, and including a slot in a form of a circular arc extending from a first slot end to a recess of a dimension that is not less than an outside diameter of said second hose, wherein said first slot end has a reduced width for completely pinching said second hose and preventing fluid flow, and wherein said recess forms a second slot end.

2. The closure device according to claim 1 further comprising an arm having a first end pivotally mounted to said housing about an axis of rotation and having a second end connected to said moving closure piece.

3. The closure device according to claim 2, wherein said nozzles have axes that are substantially parallel, and wherein said axis of rotation of said arm is substantially parallel to said nozzle axes.

4. The closure device according to claim 3 wherein said closure piece includes an arc-shaped plate defined by an inner circular edge and an outer circular edge and having a first end associated with said first slot end and a second end associated with said recess, said arc-shaped plate being connected to said arm.

5. The closure device according to claim 4 further including a first cylindrical sleeve co-operatively arranged with said first cylindrical nozzle for holding said first hose in a removable manner, and a second cylindrical sleeve co-operatively arranged with said second cylindrical nozzle for holding nd hose in a removable manner.

6. A closure device comprising:

a housing, a first hose, a second hose, a first cylindrical nozzle secured to said housing for connection to said first hose and a second cylindrical nozzle secured to said housing for connection to said second hose, said first and second nozzles having nozzle axes that are substantially parallel to one another;

a moving closure piece rotatably connected to said housing and including a slot in a form of a circular arc extending from a first slot end to a recess of a dimension that is not less than an outside diameter of said second hose, wherein said first slot end has a reduced width for completely pinching said second hose and preventing fluid flow, said recess forming a second slot end, said closure piece including an arc-shaped plate defined by an inner circular edge and an outer circular edge and having a first end associated with said first slot end and a second end associated with said recess;

an arm having a first end pivotally mounted to said housing about an axis of rotation substantially parallel to said nozzle axes and a second end connected to said moving closure piece on said arc-shaped plate;

a first cylindrical sleeve cooperatively arranged with said first cylindrical nozzle to hold said first hose in a removable manner;

a second cylindrical sleeve cooperatively arranged with said second cylindrical nozzle to hold said second hose in a removable manner; and

a holding member having a first end and a second end, wherein at least one of said ends of said holding member is attached to said second cylindrical sleeve, said holding member being constructed to prevent said second hose from moving while said closure piece is being moved from its first position to its second position.

7. A closure device for an outlet hose, comprising:

a housing, an inlet hose, a first cylindrical nozzle secured to said housing for connection to said inlet hose and a second nozzle secured to said housing for connection to said outlet hose, said nozzles having axes that are substantially parallel, said nozzles extending in substantially the same direction from the housing in a substantially side-by-side relationship;

a moving closure piece rotatably mounted about said first nozzle and having a rotation axis substantially parallel to said nozzle axes, said closure piece including a slot in a form of a circular arc substantially centered on said axis of said first nozzle, said slot having a first end and a second end, said second end being connected to a recess of a dimension that is not less than an outside diameter of the outlet hose, said slot having in the vicinity of its first end a width that is suitable for completely pinching said outlet hose and preventing fluid flow, the second end of the slot having a width that flares to connect with said recess;

means for guiding said closure piece in rotation about said rotation axis, said guiding means being connected to said first nozzle and comprising an arm having a first end which is rotatably mounted about said first nozzle and a second end which is connected to said closure piece; and

means for rotating said closure piece between a first position in which said outlet hose passes freely through said recess of the closure piece and a second position in which said outlet hose is pinched in the first end of said slot.

8. The closure device according to claim 7, wherein said inlet hose provides an inlet to a pump and said outlet hose provides an outlet to said pump.

9. The closure device according to claim 7, wherein said closure piece includes a plate in a form of a circular arc defined by an inner circular edge and an outer circular edge and having a first end corresponding to the first end of the slot and a second end corresponding to said recess, and wherein said second end of said arm of said guiding means is connected to one end of said plate.

10. The closure device according to claim 9, wherein said guiding means comprise a second plate secured to said second nozzle and provided with an orifice of a diameter slightly greater than an outside diameter of said outlet hose, said second plate being disposed in a plane orthogonal to an axis of said outlet hose.

11. The closure device according to claim 7, further comprising means for locking said closure piece in its second position.

12. The closure device according to claim 11, further including a first cylindrical sleeve and a second cylindrical sleeve mounted on said first and second nozzles respectively, the second sleeve being mounted to pivot on the second nozzle.

13. The closure device according to claim 12 wherein said second pivotally mounted sleeve has a locking member suitable for co-operating with a complementary member when the closure piece is not in its second position.

14. A closure device for an outlet hose comprising:

a housing, an inlet hose, a first cylindrical nozzle secured to said housing for connection to said inlet hose and a second nozzle secured to said housing for connection to said outlet hose, said nozzles having axes that are substantially parallel;

a moving closure piece rotatably mounted about said first nozzle and having a rotation axis substantially parallel to said nozzle axes, said closure piece including a slot in a form of a circular arc substantially centered on said axis of said first nozzle, said slot having a first end and a second end, said second end being connected to a recess of a dimension that is not less than an outside diameter of the outlet hose, said slot having in the vicinity of its first end a width that is suitable for completely pinching said outlet hose and preventing fluid flow, the second end of the slot having a width that flares to connect with said recess, said closure piece further including a plate in a form of a circular arc defined by an inner circular edge and an outer circular edge and having a first end corresponding to the first end of said slot, a second end corresponding to said recess and an arm having a first end rotatably mounted about said first nozzle and a second end connected to one end of said plate;

means for guiding said closure piece in rotation about said rotation axis, said guiding means being connected to said first nozzle, said guiding means comprising a second plate secured to said second nozzle and having an orifice of a diameter slightly greater than an outside diameter of said outlet hose, said second plate being disposed in a plane generally orthogonal to an axis of said outlet hose;

means for rotating said closure piece between a first position in which the outlet hose passes freely through said recess of the closure piece and a second position in which the outlet hose is pinched in the first end of said slot; and

a holding member offset axially relative to said second plate and being secured to said second plate in such a manner that said closure piece can move between said second plate and said holding member, said holding member being substantially in contact with said outlet hose and being constructed to prevent said outlet hose from moving while said closure piece is being moved from its first position to its second position.

15. The closure device according to claim 14, wherein said holding member has a first end and a second end and is secured to the second plate via said first end, while said second end is not attached to said housing.

16. The closure device according to claim 15, wherein the holding member is in the form of a circularly arcuate portion having said second end free and having said first end connected to said second plate via a first connection portion and wherein said holding member comprises a second connection portion secured to said second plate and projecting from said second plate.

17. The closure device according to claim 14, wherein said holding member is in the form of an arc of a circle having a first end connected to said second plate by a first connection portion and having a second end connected to said second plate by a second connection portion.

18. The closure device according to claim 17, wherein said holding member has a slot between its first and second ends.

19. The closure device according to claim 17, wherein the closure piece includes inner and outer edges provided with respective ribs suitable for co-operating with groove-forming means of circularly arcuate shape formed in each of the connection portions of the holding member.

20. The closure device according to claim 19 further comprising locking means comprising a stud formed in the groove-forming means of the second connection portion, said stud being suitable for co-operating with a notch formed in the associated rib of said closure piece, said second connection portion being extended by an unlocking tongue, the link between the second connection portion and firstly the tongue and secondly an edge of the second plate constituting a pivot axis enabling the second connection portion to pivot relative to the second plate, action on said tongue enabling the second connection portion to pivot in a temporary manner to allow said stud to escape from said notch.