Real-time sampling system

Inventors

Panzenbeck, Jason T. • Herrin, David A. • Ralph, Christopher R.

Assignees

Olympus Medical Systems Corp

Abstract

A device and system for allowing real-time viewing of a procedure beyond a distal end of an endoscope. An exemplary device includes a sheath that has at least two lumens and a handle. The handle includes a connector that connects to a proximal end of an endoscope, a shaft portion that rotatably connects to a proximal end of the connector and a manifold that is slidably received by the shaft portion. The manifold connects to the sheath and allows for insertion of a radial ultrasound probe and a medical tool into the sheath. A stopping device in the manifold avoids accidental needle deployment.

Core Innovation

A device includes a sheath comprising at least two lumens and an actuator comprising a needle handle shaft including a distal end couplable to a proximal end of a needle and a proximal end configured to connect to an aspirating source, where the needle handle shaft includes an annular groove adjacent the distal end. A handle includes a connector configured to connect to an endoscope and a shaft portion rotatably connected to a proximal end of the connector. A manifold is slidably received by the shaft portion and includes a distal end configured to connect to the sheath, with the distal end lumens having longitudinal axes that align with respective sheath lumens.

The manifold further includes a first proximal port having a longitudinal axis configured to match the longitudinal axis of one distal-end lumen and configured to receive a radial ultrasound probe. The manifold also includes a second proximal port configured to receive the needle, where the second proximal port has a longitudinal axis at an angular relationship to the longitudinal axis of a second distal-end lumen and allows the needle to pass to that second lumen. This provides aligned radial ultrasound probe placement together with an angularly oriented needle passage through the multi-lumen sheath and manifold.

The device and system further include a lock mechanism or locking device that arrests distal motion of the needle below a predefined threshold value or predefined force threshold value and releases or permits distal motion of the needle upon application of a longitudinal force or force above the threshold. The locking device includes an actuator arm and a button to disengage the lock mechanism, and the actuator arm is configured to engage the annular groove to arrest distal motion. In additional disclosed configurations, a distal exit ramp is provided on the sheath to allow needle deflection, and mechanical anti-buckling structures and keyed or clocked orientation features are used to align the needle relative to the ramp and to maintain directional targeting.

Claims Coverage

The provided portion includes two independent claims. Across these claims, the inventive features focus on an endoscope-connected handle-manifold arrangement that aligns a radial ultrasound probe lumen with one sheath lumen and angles a needle passage relative to another sheath lumen, and a needle actuator lock mechanism that arrests distal needle motion below a predefined force threshold and permits motion above the threshold.

Overall, the claim coverage centers on a sheath-and-manifold geometry that aligns a radial ultrasound probe port with one sheath lumen while directing an angularly oriented needle port through another lumen, combined with an annular-groove-driven locking device that arrests distal needle motion until a predefined force threshold is exceeded.

Stated Advantages

Documented Applications