Handle for endoscopic device
An endoscopic accessory medical device is provided. The device can include a handle, a flexible shaft, and an end effector. The handle can include an actuator for operating the end effector through a wire or cable pulling member that extends through the flexible shaft. The handle and actuator can be operable with a single hand, such that the operation of the end effector can be accomplished with the same hand that is used to hold the handle and advance the end effector through an endoscope. The handle can include an actuation mechanism that is decoupled from operation of the end effector when the actuator is in a first open position, which becomes operatively coupled to the end effector when the actuator is moved to a second position, such as by squeezing the actuator, and which operates the end effector when the actuator is moved further to a third position.
1. A medical device comprising:
a flexible member;
an end effector operatively associated with a distal end of the flexible member; and
an elongate handle extending longitudinally from a handle proximal end to a handle distal end, the handle being operatively associated with the proximal end of the flexible member, wherein the flexible member extends from an end of the elongate handle along an axis generally parallel to a longitudinal axis of the elongate handle;
wherein the handle comprises an actuator operable by the same hand used to grasp the handle for operating the end effector through the flexible member with a portion of the flexible member in a looped configuration behind the back of the same hand;
wherein the actuator is disposed on the handle to be operated by the same hand holding the handle without the use of the thumb or index finger of the same hand, while the thumb and index finger of the same hand are free to grip and advance the portion of the flexible member in a looped configuration;
wherein the handle has an outer surface, the handle outer surface extending lengthwise intermediate the handle proximal and distal ends, with the handle outer surface having a maximum width portion disposed intermediate the handle proximal and distal ends, wherein the handle outer surface has a length that is greater than the width of the maximum width portion, and wherein the actuator comprises a lever, the lever extending lengthwise alongside at least a portion of the handle outer surface, and wherein the lever extends alongside the maximum width portion of the handle outer surface;
the medical device further comprising a ratchet mechanism; and
the medical device further comprising a release disposed at a first end of the handle, wherein the elongate flexible member extends from a second, opposite end of the handle; and
wherein the release is operable to disengage the ratchet mechanism.
2. The device of claim 1 wherein the end effector is selected from the group consisting of a biopsy forceps, grasping forceps, and surgical scissors.
3. The device of claim 1 wherein the flexible member has a length of at least 0.5 meter.
4. The device of claim 1 wherein the flexible member has a flexible shaft having a length of at least 1.0 meter.
5. The device of claim 1 wherein the lever has a length that is at least half the length of the handle.
6. A system for operating a flexible endoscopic device with one hand comprising:
an end effector having a first configuration and a second configuration;
a handle;
a flexible shaft extending intermediate the end effector and the handle;
the handle comprising:
a housing, the housing being longer than the housing is wide, wherein the flexible shaft extends from the housing along an axis generally aligned with length of the housing;
an actuator comprising a lever extending lengthwise alongside the housing and operable by the same hand holding the housing to actuate the end effector from the first configuration to the second configuration; wherein at least the thumb and index finger of the same hand holding the housing are free to grip and release the flexible shaft of the device; and
a release operable for returning the end effector to the first configuration.
7. The system of claim 6 wherein the release is disposed at a first end of the handle and wherein the elongate flexible member extends from a second, opposite end of the handle.
8. The system of claim 6 wherein the lever has a length at least half that of the handle.
9. The medical device of 6 further comprising a ratchet operable with the lever.