Unitary endoscopic vessel harvesting devices are disclosed. In some embodiments, such devices may comprise an elongated body having a proximal end and a distal end. A conical tip may be disposed at the distal end of the elongated body. In addition, the surgical instrument may include one or more surgical instruments moveable in a longitudinal direction along an axis substantially parallel to a central longitudinal axis of the cannula from a retracted position proximally of a distal end of the tip to an advanced position toward the distal end of the tip to seal and cut a blood vessel.

Described herein are percutaneous treatment tools and methods for applying electric treatment to a target tissue, hi some examples the treatment tools described herein allow for adjusting the spacing between the proximal electrode(s) and the distal electrode of the treatment tools. The treatment tools described herein may also be configured to reduce peak electric field for a given potential and/or to increase hoop stress on the tissue upon insertion of the tip to prevent or reduce arcing between the electrodes.

A vitreous enamel coating for an electrosurgical metal cutting blade, the coating having a coefficient of thermal expansion substantially near the coefficient of thermal expansion of the metal cutting blade. Selection of materials having similar coefficients of thermal expansion results in an electrosurgical cutting blade with an improved insulating layer, substantially improved durability, or both.

A transecting fastener is operable to cut and secure tissue. The transecting fastener comprises a plurality of legs configured to grip tissue. The transecting fastener further comprises a crown portion and at least one blade. The crown portion joins the plurality of legs and is malleable. The at least one blade is positioned on each of the plurality of legs. The at least one blade is operable to cut tissue. A fastener deploying instrument may be used to deploy the transecting fastener. The fastener deploying instrument may deploy the fasteners in parallel pairs, in an end to end manner.

A device for treating a tissue includes a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough, the capsule releasably coupled to a proximal portion of the device and clip arms, proximal ends of which are slidably received within the channel of the capsule so that the clip arms are movable between an open configuration, and a closed configuration. A core member is coupled to the clip arms, the core member including a proximal portion and a distal portion releasably connected to one another so that, when the core member is subjected to a predetermined load, the proximal and distal portions are separated from one another. An electrically conductive control member is connected to the core member, a proximal end of the connected member connected to a power source for delivering an electrical current to the clip arms.

Disclosed is a medical device comprising an incision assembly coupled to a catheter and an incision opening defined along the incision assembly. A retractable cutting apparatus is disposed within the incision opening and comprises a first incision member comprising at least one first cutting surface and defining a first member proximal end rotatably fixed proximate to a distal end of the incision opening and the at least one cutting surface is located on a bottom edge of the first incision member. A second incision member comprises at least one second cutting surface and defines a second member distal end attached to the first incision member at a connection point between a first member distal end and the first member proximal end of the first incision member, and wherein the at least one second cutting surface is located on a bottom edge of the second incision member.

An apparatus for operating on tissue includes an end effector having a first jaw, a second jaw, a first blade, and a second blade. The second jaw pivots relative to the first jaw from an open position to a closed position. The first blade moves from a proximal position to a distal position to pivot the second jaw to the closed position. The second blade moves from a proximal position to a distal position when the second jaw is in the open position. The second blade is exposed between the first and second jaws when the second blade is in the distal position.

Devices and methods for performing subcutaneous surgery in a minimally invasive manner are provided. The methods include application of reduced air pressure in a recessed area of a handpiece placed over a section of skin and drawing the section of skin and subcutaneous tissue into the recessed area. In a subsequent step a tool is inserted through a tool conduit in the handpiece and through the skin into the subcutaneous tissue, enabling the performance of the desired surgery. Common surgical procedures include dissection and ablation. The devices and methods can be directed at the treatment of skin conditions like atrophic scars, wrinkles, or other cosmetic issues, at treatments like or promoting wound healing or preventing hyperhidrosis, or can be used for creating space for various implants.

A method of electrothermally fusing together pieces of tissue at an interface and simultaneously cutting the fused tissue along a linear path through the interface, including: compressing the tissue pieces together at the interface sufficiently for fusing the tissue pieces together and for cutting the fused tissue pieces in the linear path through the fused tissue at the interface; delivering an impulse of electrical power of no greater than 4.0 seconds time duration which contains sufficient energy to fuse the tissue pieces together at the interface and to simultaneously cut the fused tissue; converting the electrical power impulse into thermal energy applied at the interface; and regulating the temperature of the thermal energy applied at the interface in a range of 200 C. to 320 C. while fusing and simultaneously cutting the tissue pieces at the interface by controlling characteristics of the electrical power impulse.

Unitary endoscopic vessel harvesting devices with an elastic force are disclosed. In some embodiments, such devices comprise an elongated body having a proximal end and a distal end, a tip disposed at the distal end of the elongated body. The tip having a visual cue indicating a location of at least one cutting element extending from the elongated body.