IV safety module

• US 5,257,978 A
• Filed: 07/14/1992
• Issued: 11/02/1993
• Est. Priority Date: 07/14/1992
• Status: Expired due to Fees

• Current Assignee: Habley Medical Technology Corporation
• Original Assignee: Habley Medical Technology Corporation
• Inventors: Foster, Clark B., Smedley, William H., Haber, Terry M.
• Primary Examiner(s): WEISS, JOHN
• Application Number:
  US07/914,173
• Time in Patent Office: 476 Days
• Field of Search: 604/250, 604/153, 604/213, 128/DIG. 13, 251/9, 251/10, 417/474, 417/480
• US Class Current: 604/250
• CPC Class Codes: A61M 39/281 Automatic tube cut-off devices, e.g. squeezing tube on detection of air
• CPC Class Codes: A61M 5/14232 Roller pumps

Abstract

An IV safety module (2) is used with a peristaltic type IV pump (5) to prevent the unrestricted flow of IV fluid through an IV line (4) when the door (80) of the IV pump is open. A locking trigger (42) is pivotally mounted to the body. A spring (10) is mounted to the body and has a section (18) which compresses and collapses the IV tube closed, thus substantially halting and IV fluid flowing therethrough, as the spring biases the trigger to the tube clamped position. The safety module is mounted adjacent the pump and is configured so that closing the door of the pump depresses the trigger to open the IV tube.

Claims

1. An IV safety module, for use with an IV assembly of the type including an IV fluid source, an IV line coupled to the IV fluid source and an IV pump along the IV line which pumps a selected flow of IV fluid through the IV line to the patient, the IV pump being of the type which forces the IV fluid along a pump section of the IV line mountable within the IV pump, the IV pump having a door movable between an open position, which exposes the pump section of the IV line, and a closed position, which secures the pump section of the IV line within the pump, the safety module comprising:

a body mountable to the IV line; and

safety means for automatically clamping the IV line closed, to substantially prevent fluid flow therethrough, when the pump door is open, and for automatically unclamping the IV line, to permit substantially unhindered fluid flow therethrough, when the pump door is closed, the safety means including a locking trigger movably mounted to the body for movement between a tube clamped closed position, in which at least a part of the locking trigger is spaced apart from the body, and a tube released position, in which the at least part of the locking trigger is adjacent the body.

2. The IV safety module of claim 1 wherein the locking trigger is pivotally mounted to the body.

3. The IV safety module of claim 1 wherein the safety means includes a spring, mounted to the body and connected to the locking trigger, which biases the locking trigger from the tube released position to the tube clamped closed position.

4. An IV safety module, for use with an IV assembly of the type including an IV fluid source, an IV line coupled to the IV fluid source and an IV pump along the IV line which pumps a selected flow of IV fluid through the IV line to the patient, the IV pump being of the type which forces the IV fluid along a pump section of the IV line mountable within the IV pump, the IV pump having a door movable between an open position, which exposes the pump section of the IV line, and a closed position, which secures the pump section of the IV line within the pump, the door including a rib element which engages the pump section of the IV line when in the closed position, the safety module comprising:

a body mountable to the IV line;

safety means for automatically clamping the IV line closed, to substantially prevent fluid flow therethrough, when the pump door is open, and for automatically unclamping the IV line, to permit substantially unhindered fluid flow therethrough, when the pump door is closed;

the safety means including a locking trigger pivotally mounted to the body for movement between tube clamped closed and tube released positions;

means for disabling the safety means thereby keeping the trigger in the unclamped position so the IV line remains unclamped and substantially open, the disabling means including means for sliding the trigger between enabled and disabled positions; and

the rib element including means for preventing the door from moving to the closed position when the trigger is in the disabled position.

5. An IV safety module, for use with an IV assembly of the type including an IV fluid source, an IV line coupled to the IV fluid source and an IV pump along the IV line which pumps a selected flow of IV fluid through the IV line to the patient, the IV pump being of the type which forces the IV fluid along a pump section of the IV line mountable within the IV pump, the IV pump having a door movable between an open position, which exposes the pump section of the IV line, and a closed position, which secures the pump section of the IV line within the pump, the safety module comprising:

a body mountable to the IV line; and

safety means for automatically clamping the IV line closed, to substantially prevent fluid flow therethrough, when the pump door is open, and for automatically unclamping the IV line, to permit substantially unhindered fluid flow therethrough, when the pump door is closed, the safety means including a spring, mounted to the body and connected to the locking trigger, which biases the locking trigger from the tube released position to the tube clamped closed position, the spring having an IV line engaging portion which engages and collapses the IV line when the trigger is in the tube clamped closed position.

6. The IV safety module of claim 5 wherein the body includes an open region along which the IV line passes, the open region having a surface generally conforming to the shape of the IV line engaging portion to aid collapse of the IV line by the spring.

7. An IV safety module, for use with an IV assembly of the type including an IV fluid source, an IV line coupled to the IV fluid source and an IV pump along the IV line which pumps a selected flow of IV fluid through the IV line to the patient, the IV pump being of the type which forces the IV fluid along a pump section of the IV line mountable within the IV pump, the IV pump having a door movable between an open position, which exposes the pump section of the IV line, and a closed position, which secures the pump section of the IV line within the pump, the safety module comprising:

a body mountable to the IV line;

safety means for automatically clamping the IV line closed, to substantially prevent fluid flow therethrough, when the pump door is open, and for automatically unclamping the IV line, to permit substantially unhindered fluid flow therethrough, when the pump door is closed, the safety means including a spring, mounted to the body and connected to the locking trigger, which biases the locking trigger from the tube released position to the tube clamped closed position; and

means for disabling the safety means thereby keeping the trigger in the unclamped position so the IV line remains unclamped and substantially open.

8. The IV safety module of claim 7 wherein the trigger is pivotally mounted to the body for movement between the tube clamped closed and tube unclamped positions.

9. The IV safety module of claim 8 wherein the disabling means includes means for sliding the trigger between enabled and disabled positions.