Catheter shut-off valve
OwnerRonald B. Lutherinventor
Life of this patent
Estimating the term…
Abstract
A device for preventing fluid flow out of a patient when a medical component is withdrawn from a catheter connected to the patient. The device includes a tubular hub and a clamp slidably mounted on the hub. A clamp arm is normally biased into a position in which it squeezes the cannula to prevent flow therethrough. The arm is either self biased or urged into closed position by a resilient element. Connecting the upstream end of the hub to the medical component produces relative movement between the hub and the clamp that causes cam surfaces on those members to bias the clamp arms into an open position that permits fluid flow through the cannula.
Claims26
A device for preventing fluid flow out of a patient when a medical component is withdrawn from a catheter connected to the patient, said device comprising:
- a tubular hub having an upstream end configured to receive a medical component, and having a catheter cannula attached to a downstream end;
- and
- an occluder mounted on said hub and having a closed position in which it prevents fluid flow through the cannula and an open position in which fluid can flow through the cannula, said occluder being biased into the closed position and requiring a positive force to move it into an open position.
A valve to be connected between a catheter and a medical device to prevent fluid from leaking out of the cannula when the device is withdrawn and is disconnected from the catheter, said valve comprising:
- a fluid flow passage including a tubular end;
- and
- a valve member for closing the passage;
- said end and said valve member being configured so that connecting a medical device to said end causes said valve member to close the passage.
A method of controlling fluid flow through a catheter to prevent fluid from flowing out of a patient when a medical component is disconnected from the catheter, said method comprising the steps of:
- connecting the medical component to an upstream end of a catheter hub while moving an occluder into an open position in which it does not prevent flow through the catheter, said occluder being normally biased into a closed position wherein it prevents flow through the catheter;
- and
- disconnecting the medical device from the catheter allowing the occluder to move into its normally closed position, thereby automatically preventing fluid flow out of a patient when the medical device is withdrawn.
A method of preventing fluid flow out of a patient when a medical component is withdrawn from a catheter connected to a patient, said method comprising the steps of:
- providing a tubular hub having one end adapted to receive a medical component and having a second end attached to a catheter cannula;
- and
- providing an occluder slidably mounted on the hub;
- and
- biasing said occluder into a closed position in which it prevents fluid flow through the cannula;
- and
- configuring said occluder and said hub so that when a medical component is connected to said one end of said hub, the occluder is moved into an open position in which fluid flow is allowed through the cannula, and the occluder will automatically move to a closed position preventing fluid flow when the medical device is withdrawn from the hub.
A device for preventing fluid flow out of a patient when a medical component is withdrawn from a catheter connected to the patient, said device comprising:
- a tubular hub having an upstream end configured to receive a medical component, and having a catheter cannula attached to a downstream end;
- a clamp slidably mounted on the hub and including a flexible clamp arm having a clamp jaw thereon for restricting flow through the cannula;
- and
- a biasing element engaging said arm and being configured to bias the arm into position wherein said jaw prevents flow through the cannula.
Dependencies are inferred from the claim text.