Valve device, a delivery system including same and method

Patent metadata

Field	Value
Publication number	US-10364914-B2
Application number	US-201414500581-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Sep 29, 2014
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

The disclosed subject matter relates to a valve device that includes a valve member located within a housing in which the valve member's operation can be bypassed. For example, the valve device can include a bypass device that has an input structure, a motion conversion structure, and an output structure. The input structure can include a portion configured to resiliently deform if a valve opening input force is applied to the input structure in an input direction. The motion conversion structure can be configured to convert the valve opening input force into motion of the output structure in an output direction that is non-parallel to the input direction. The output structure can be configured to move the valve member (e.g., from a closed state to an opened state in order to bypass normal valve operation) if the motion conversion structure is displaced in the input direction. The valve device can be used in various manners, and is particularly suitable for use in a patient fluid delivery system.

First claim

What is claimed is:

1. A valve device comprising:
a housing including a fluid passage extending along a longitudinal axis of the housing;
a valve member movably mounted with respect to the housing such that the valve member is movable between a closed state position and an opened state position; and
a bypass device including a flexible input structure having an inner surface facing the longitudinal axis of the housing and an outer surface facing away from the longitudinal axis of the housing, a motion conversion structure having an inner surface facing the longitudinal axis of the housing and an outer surface opposing the inner surface of the input structure and facing away from the longitudinal axis of the housing, and an output structure, wherein
the input structure resiliently moves toward the longitudinal axis wherein the inner surface of the input structure contacts the outer surface of the motion conversion structure if a valve opening input force is applied to the input structure in an input direction,
the motion conversion structure converts the valve opening input force into a motion of the output structure in an output direction that is non-parallel to the input direction, and
the output structure moves the valve member if the motion conversion structure is displaced in the input direction.

2. The valve device according to claim 1 , wherein the input structure includes a flexible tubular member having a proximal end and a distal end, the flexible tubular member defining a fluid passage that extends from the proximal end to the distal end.

3. The valve device according to claim 1 , wherein the motion conversion structure includes:
an anchor adjacent to a portion of the input structure; and
an actuator connected to the anchor and connected to the output structure, the actuator being movable relative to the anchor.

4. The valve device according to claim 1 , wherein the motion conversion structure includes:
an anchor;
a first conversion member connected to the anchor and connected to the output structure, the first conversion member being movable relative to the anchor;
a second conversion member connected to the anchor and connected to the output structure, the second conversion member being movable relative to the anchor.

5. The valve device according to claim 4 , wherein the second conversion member is movable relative to the first conversion member.

6. The valve device of claim 4 , wherein
the first conversion member includes:
a proximal end connected to the anchor;
a distal end connected to the output structure; and
a central portion extending in an arc between the distal end of the first conversion member and the proximal end of the first conversion member.

7. The valve device of claim 6 , wherein
the second conversion member includes:
a proximal end connected to the anchor;
a distal end connected to the output structure; and
a central portion extending in an arc between the distal end of the second conversion member and the proximal end of the second conversion member.

8. The valve device according to claim 6 , wherein the first conversion member is configured and oriented to be a substantial mirror image of the second conversion member.

9. The valve device according to claim 1 , wherein the motion conversion structure includes at least one leaf spring.

10. The valve device according to claim 1 , wherein the motion conversion structure includes at least two leaf springs.

11. The valve device according to claim 1 , wherein the output structure includes:
a pair of plunger arms connected to and extending from a distal end of the motion conversion structure toward the valve member and which selectively engage the valve member, and the pair of plunger arms are spaced apart from each other.

12. The valve device according to claim 1 , wherein the motion conversion structure and the output structure are integrally formed as a single, continuous, homogenous unit.

13. The valve device according to claim 1 , wherein:
the input structure includes:
a resilient and flexible tubular member including a proximal opened end, a distal opened end, wherein a support member is connected to the proximal opened end of the resilient and flexible tubular member, and the valve member is located at the distal opened end of the resilient and flexible tubular member.

14. The valve device according to claim 1 , wherein the bypass device includes:
a stop structure limiting relative motion between two portions of the motion conversion structure.

15. The valve device according to claim 1 , wherein
the motion conversion structure includes:
a first member; and
a second member connected to the first member and movable relative to the first member, wherein a pin is located on the second member.

16. The valve device according to claim 15 , wherein a socket member is located on the first member and the socket member cooperates with the pin on the second member to guide the first member with respect to the second member during relative movement.

17. The valve device according to claim 1 , further comprising:
a lock structure located adjacent the input structure and which moves relative to the input structure between a locked position and an unlocked position, the bypass device maintains the valve member in the opened state position if the lock structure is in the locked position, and the bypass device maintains the valve member in the closed state position if the lock structure is in the unlocked position.

18. The valve device according to claim 17 , wherein the lock structure includes:
a sleeve slidably mounted on an exterior surface of the input structure,
a pair of opposed cams extending from the sleeve toward the input structure.

19. The valve device according to claim 17 , wherein the lock structure includes:
a rotatable member having opposed cam surfaces which are rotated into the locked position.

20. The valve device according to claim 1 , wherein:
the housing includes a first portion with a cross bar and a valve seat, and a second portion including a substantially triangular member; and
the valve member is a resiliently deformable disc which engages the valve seat, the cross bar and the substantially triangular member.

21. A delivery system for infusing a fluid into a patient comprising:
a valve device according to claim 1 ;
a first conduit having a first end connected in fluid communication with a source of fluid, and a second end connected to the valve device; and
a second conduit having a proximal end and a distal end, the proximal end of the second conduit connected to the valve device and the distal end of the second conduit connected in fluid communication with the patient.

22. A method for operating the valve device of claim 1 located on a patient infusion line, comprising:
providing the valve device of claim 1 ;
moving the input structure of the bypass device in the input direction;
displacing the output structure of the bypass device in the output direction in response to moving the input structure of the bypass device, the output direction being non-parallel to the input direction, wherein displacing of the output structure of the bypass device causes the valve device to open and thus allows fluid to flow through the valve device.

23. The method for operating the valve device according to claim 22 , wherein:
moving the input structure of the bypass device further includes pinching the resilient

Assignees

• Braun Medical Inc

Inventors

• Burnard Edwin
• Ozgu Murat
• Loomis Benjamin

Classifications

• A61M39/225

  Flush valves, i.e. bypass valves for flushing line · CPC title

• A61M5/16881

  Regulating valves (on-off valves, e.g. clamps A61M39/28) · CPC title

• F16K15/18

  with actuating mechanism; Combined check valves and actuated valves · CPC title

• A61M39/24

  Check- or non-return valves · CPC title

• A61M2039/2466

  being fixed in its center · CPC title