Devices and methods are described for a minimally invasive procedure offering immediate relief of brain compression and prevention of subdural hematoma re-accumulation. For example, this disclosure describes devices and methods for embolization of bleeding branch vessels of the middle meningeal artery and subdural hematoma drainage in a single endovascular intervention using multimodal catheter-based technology.

A medical device having an elongate body with a proximal portion, a distal portion, and defining a lumen therethrough. The medical device has an expandable element coupled to the distal portion of the elongate body, the expandable element defining a proximal portion, a distal portion opposite the proximal portion and an intermediate portion disposed between the proximal portion and the distal portion. The expandable element also has an inner surface and an outer surface opposite the inner surface. The medical device has a plurality of cutting members, each cutting member being coupled with the outer surface of the expandable element, each cutting member having a proximal end and a distal end opposite the proximal end, the proximal end being proximate the proximal portion of the expandable element and the distal end being proximate to the intermediate portion of the expandable element.

A cautery pen tip accessory cover comprises a cylindrical member that can receive a cautery pen in a first end and the tip of the cautery pen can extend from a second opposite end when the cover is in a retracted configuration. The cylindrical member has an opened lateral exposure that allows the feel of the cautery pen therethrough. A cover exposure opening in the cylindrical member to provide access to a trigger of the cautery pen when the cautery pen tip cover is in the retracted configuration. A resilient member urges the cautery pen tip cover to the non-retracted configuration where access to the cautery pen trigger is prevented. The cylindrical member is easily retracted by a finger ring configured permanently into the cylindrical member, allowing easy retraction of the cover by the operator squeezing the cover to a resistance bar stabilization system accessory configured over the cautery pen.

An apparatus for performing electrosurgical operations using an electrosurgical power generator comprises an articulated mechanical arm, an electrosurgical grasper connected to the mechanical arm at a distal end thereof, a flexible sleeve at least partly disposed in a bendable portion of the arm, an outer surface of the sleeve comprising a plurality of surface features that define a helical wire-path around a central longitudinal axis of the sleeve, an actuation-cable passing through an inner conduit of the sleeve and mechanically coupled to the grasper to open and shut the grasper, and an electrically conductive wire for providing electrical connectivity from the power generator to the grasper, the wire being disposed on the outside of the sleeve and engaged with one or more of the surface features so as to follow therethrough the helical wire-path.

A method includes, in a processor, receiving signals from (i) a first position sensor disposed on a shaft of a catheter, and (ii) a second position sensor disposed on a distal end of a sheath of the catheter. Based on the signals received from the first position sensor and the second position sensor, an event is detected in which an expandable distal-end assembly of the catheter is being withdrawn into the sheath while still at least partially expanded. A responsive action is initiated in response to detecting the event.

An endoluminal traversing system and tissue crossing system are described wherein the access systems are controlled by actuators that allow for robotic control of system functions. The robotic system can be configured for full manual control over the actuators, full computerized control, or a combination of human and computer (AI, neural net, rule set) guidance.

A tissue-removing catheter for removing tissue in a body lumen includes an elongate body having an axis. A handle is mounted to a proximal end portion of the elongate body. A tissue-removing element is mounted on a distal end portion of the elongate body. An inner liner is received within the elongate body and defines a guidewire lumen. An advancer is mounted on the handle and is movable relative to the housing. The inner liner is coupled to the advancer at a proximal end portion of the inner liner such that movement of the advancer causes a corresponding movement of the inner liner to exert a push force on the tissue-removing element to advance the tissue-removing element and a pull force on the tissue-removing element to retract the tissue-removing element for moving the tissue-removing element relative to the handle.

The present invention provides a detection mechanism, a radio-frequency ablation catheter, and a radio-frequency ablation system. The radio-frequency ablation catheter comprises a handle portion (2), a needle tube portion (1), a central electrode (3), and a detection mechanism. The needle tube portion (1) comprises a first tube sleeve (11) and a second tube sleeve (12), the handle portion (2) comprises a cylinder sleeve (21) and a sliding button (22), the central electrode (3) comprises an electrode body (31), an electrode wire (26), and an electrode connector (23), and the detection mechanism comprises a fixing base (5), a traction wire, a connecting base (6), and multiple claw-shaped electrodes (7). A distal end of the traction wire is fixed on the fixing base (5), and a proximal end of the traction wire is fixed on the sliding button (22); and the claw-shaped electrodes (7) are fixed on the fixing base (5), and slidably provided in the connecting base (6). The traction wire is pulled by the sliding button (22) to drive the fixing base (5) to push the claw-shaped electrodes (7) in or out of the connecting base (6). This facilitates the control of the claw-shaped electrodes (7) by a user during surgery, the determination of the temperature or impedance of the claw-shaped electrodes (7), and thus the determination of the progress of ablation.

A tip protector, for a surgical instrument having a shaft and an instrument tip near a distal portion of the shaft, includes a tip housing for releasably receiving the instrument tip; a clamp system suitable for gripping a portion of the surgical instrument to position the tip protector; and a distal through opening at or near the distal end of the tip housing. The distal through opening has an opening size that is adjustable.

Disclosed are a flexible surgical instrument and a driving unit thereof. The flexible surgical instrument may comprise a flexible continuous body structure composed of a distal structural body, a middle connecting body and a proximal structural body linked in sequence. The driving unit is linked to the flexible continuous body structure. When a structural backbone driving mechanism in the driving unit drives the proximal structural body to turn in any direction, the distal structural body correspondingly turns in the opposite direction. A surgical end effector driving mechanism in the driving unit can drive a surgical end effector linked to the distal end of the distal structural body to implement the action control of the surgical end effector.