Sterile disposable remote pneumatic actuators
The various embodiments of the present invention relate to remote pneumatic (bellows-action) actuators for switching applications, which are preferably sterile and/or disposable. When compressed, the bellows-action actuator provides a pulse of air pressure sufficient to actuate a remotely-located pneumatic switch configured to turn on/off an electrical, mechanical or optical device. The pulse of air pressure is propagated along a non-conducting tube, thereby substantially reducing the risk of e.g., electric shock or O 2 ignition/combustion associated with conventional electric switches in wet, hazardous or medical environments.
1. A remote actuator for a medical device that comprises a pneumatic switch, a medical tube and a treatment member, the remote actuator comprising:
a bellows having a pneumatic port and an external coupling member disposed along an external surface of the bellows, the external coupling member being configured to reversibly attach the remote actuator to an external portion of the medical tube and/or treatment member, wherein the coupling member is configured so that the remote actuator can be attached to the medical tube and/or treatment member, detached from the medical tube and/or treatment member, and then reattached to the medical tube and/or treatment member; and
an actuating conduit pneumatically coupled at a first end to the pneumatic port and configured to pneumatically couple at a second end to the pneumatic switch on the medical device, such that application of pressure to the bellows generates sufficient air pressure to actuate the pneumatic switch.
2. The remote actuator of claim 1 , further comprising a handle portion.
3. The remote actuator of claim 1 , wherein the bellows is pneumatically isolated from the medical tube and/or treatment member.
4. The remote actuator of claim 1 , wherein the treatment member comprises a cannula for fluid infiltration, infusion or suction.
5. The remote actuator of claim 1 , wherein at least the bellows of the remote actuator is sterile.
6. The remote actuator of claim 1 , wherein the remote actuator is configured for a single use.
7. The remote actuator of claim 1 , further comprising a salable package comprising an outer wrapper defining a sealed and sterile interior, wherein the remote actuator is located within said sealed and sterile interior.
8. The remote actuator of claim 1 , wherein the actuating tube further comprising an optical fiber coupled to a light source, such that the bellows can be illuminated based on the status of the pneumatic switch.