Provided herein are expandable devices, rail systems, and motorized devices. In one embodiment, an expandable device comprises an expandable sac having a tool housed therein. The expandable device is optionally configured for operation while inside a body cavity. The expandable device optionally comprises at least one rail in the sac, and at least one railed device coupled to the rail for movement there on. Movement of the railed device on the rail is provided by, for example, a motor such as an electromagnetic motor or an inch-worm type motor. Expandable devices can be used, for example, to perform minimally invasive medical procedures requiring access to a body cavity. Expandable devices can also be used, for example, to provide safe and stable transport of instruments to the body cavity.

A device (1) has an extraction bag (5) to receive a preparation (29) that is detached using an electrosurgical cutting loop (6, 6) in a body cavity (27). The extraction bag (5) can be extended out of a distal opening (10) of an insertion tube (3). The cutting loop (6, 6) is flexible and can be extended out of the insertion tube (3) together with the extraction bag (5). The cutting loop (6, 6) is adjacent a first bag opening (9) and adjacent a first loop (8). The cutting loop (6, 6) has an exposed non-insulated electrically conductive cutting region (14, 14) at the distal end (13, 13) of the loop, and an insulated region (15, 15) outside of the cutting region (14, 14). The extraction bag (5) has at least one second closable bag opening (17) at the end facing away from the first bag opening (9).

Extraction devices for extracting chronically implanted devices such as leadless cardiac pacemakers (LCP). In some cases, the extraction devices may be configured to cut, tear or ablate through at least some of the tissue ingrowth around and/or over the chronically implanted device such that a retrieval feature on the chronically implanted device may be grasped for removal of the chronically implanted device. Implantable medical devices such as LCPs may include features that facilitate their removal.

Sphincterotomes and methods for making and using sphincterotomes are disclosed. An example sphincterotome may include an elongate shaft having an outer surface and a distal end region. The sphincterotome may also include a sphincterotome wire assembly having a distal end coupled to the distal end region of the elongate shaft and a body portion extending along the outer surface of the elongate shaft. The sphincterotome wire assembly may be designed to shift the distal end region of the elongate shaft between a first configuration and a curved configuration. The body portion of the sphincterotome wire assembly may include a cutting region and a non-conductive region.

Ablation devices useful for removing nerve and soft tissue via a minimally invasive procedure to alleviate pain are provided. The device comprises a cannula having an opening at a distal tip of the cannula, the opening configured for suction of a surgical site, and a movable tissue capture member having a portion disposed within the opening or adjacent to the cannula, the movable tissue capture member configured to capture tissue when moved in a first position. Methods for ablating nerve and/or soft tissue utilizing the ablation devices are also provided.

A surgical device for use in removing a lesion from a brain includes a first tube, a second tube disposed within the first tube, a sleeve that encloses a portion of the first tube, wire loops attached to a distal end of the first tube, a loop expander and rotation mechanism drivingly coupled with the wire loops, an aspiration port, and an irrigation port. The loop expander and rotation mechanism is operable to expand the wire loops while rotating the wire loops relative to the first tube and contract the wire loops while rotating the wire loops relative to the first tube. Cut tissue is aspirated via the aspiration port. Irrigation fluid is supplied to irrigate the cut tissue via the irrigation port.

The present invention discloses a low temperature polypectomy snare surgical device, system and method. The device includes: a liquid input unit, configured to input liquid to a target object in response to a liquid input signal to form a thin layer of a conductive medium between an emission electrode and a loop electrode; a bipolar electrode socket connector, connected with a high frequency generator through a high frequency cable to receive a first input voltage generated by the high frequency generator; the emission electrode, configured to receive the first input voltage generated by the high frequency generator via the bipolar electrode socket connector and apply a first voltage between the emission electrode and the loop electrode.

An electrode for high frequency medical device includes: a base; and a coating layer which is laminated onto the base, includes at least either one of a fluororesin and a silicon compound, has a volume resistivity of 1.010.sup.0 to 1.010.sup.13.Math.cm, and has a thickness of 1 to 30 m. The electrode is configured to denature and dissect a living tissue by a Joule heating due to a high frequency current and an arc discharge.

An adapter element for receiving an HF surgical handpiece is proposed. The adapter element is characterized in that it is possible by receiving the handpiece in the adapter element to form a smoke duct in said adapter element for discharging smoke from a treatment area, at least one stick-, point-, ring-, sphere- or loop-shaped electrode or combinations of the same being attached on the distal end of the adapter element.

An exemplary surgical device includes a shaft with a lumen defined therethrough and an element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen; wherein motion from the stored position to the deployed position causes a first leg of the element to advance distally relative to the distal end of the shaft, and causes a second leg of the element to move proximally relative to the distal end of the shaft.