An electrosurgical instrument for making an end-to-end anastomosis between two hollow organ sections includes two tools movable relative to each other and each including an HF electrode by which the hollow organ sections can be fusion-welded to each other. The two tools are substantially sleeve-shaped or can at least be brought into sleeve shape so that a first tool can enclose a first hollow organ section and a second tool can enclose a second hollow organ section. Each of the electrodes is formed on an end face of each sleeve-shaped tool around which the respective hollow organ section can be everted inside out, and the two tools are movable relative to each other so that the electrodes are aligned and can clamp the everted hollow organ sections therebetween.

The invention primarily relates to fastening and stabilizing tissues, implants, and/or bondable materials, such as the fastening of a tissue and/or implant to a bondable material, the fastening of an implant to tissue, and/or the fastening of an implant to another implant. This may involve using an energy source to bond and/or mechanically to stabilize a tissue, an implant, a bondable material, and/or other biocompatible material. The invention may also relate to the use of an energy source to remove and/or install an implant and/or bondable material or to facilitate solidification and/or polymerization of bondable material.

A method of creating an AV fistula between adjacent first and second vessels includes inserting a guidewire from the first vessel into the second vessel. Inserting a catheter including a proximal member and a distal member over the guidewire such that a distal tip of the distal member comes into contact with a selected anastomosis site. Moving the distal member and the proximal member together to clamp tissue surrounding the aperture between the distal face of the proximal member and a proximal face on the distal member. Applying energy to an active heating member on the proximal member to cut and form the aperture, and to weld the edges thereof in order to create a desired fistula between the two vessels. Using a passive heating member disposed on the distal member to create a heating gradient across a tissue contacting surface of the distal member.

A sheath for use in performing surgical vascular anastomotic procedures, and applications thereof. Sheath includes a sheath main portion (tubular member) having a sheath main portion distal end, and a (cylindrical or conical) sheath main portion proximal open end, and also includes a sheath distal end portion, continuous with sheath main portion distal end, and having at least one intra-sheath fluid (blood, water, air) flow passageway (tunnel), each extending and passing entirely through inside of the sheath distal end portion, via two differently located parts thereof. Sheath distal end portion further includes an intra-sheath control wire anchoring and fixing pocket (cavity), and a sheath control wire passageway. Each intra-sheath fluid flow passageway facilitates continuous flow of blood vessel lumen fluids (blood, water, air) through the overall sheath. Particularly applicable for use in ‘clampless’ types of (end-to-side) surgical vascular anastomotic procedures, for performing coronary artery bypass grafting (CABG).

Devices, systems, and methods for reducing stress on a blood vessel are disclosed herein. A damping device (100) configured in accordance with embodiments of the present technology can include an anchoring member (104) coupled to a flexible, compliant damping member (102) including a generally tubular sidewall having an outer surface (115), an inner surface (113) defining a lumen configured to direct blood flow, a first end portion (106) and a second end portion (108), and a damping region (120) between the first and second end portions (106, 108). The inner and outer surfaces (113, 115) of the damping member (102) can be spaced apart by a distance that is greater at the damping region (120) than at either of the first or second end portions (106, 108). When blood flows through the damping member (102) during systole, the damping member (102) absorbs a portion of the pulsatile energy of the blood, thereby reducing a magnitude of the pulse pressure transmitted to a portion of the blood vessel distal to the damping device (100).

Disclosed herein are embodiments of devices and methods for forming a seal covering an incision in tissue. In some embodiments, a deformable member can be loaded into a catheter and inserted into the tissue incision. The deformable member can unfold into a cup-shape which can form a seal around the incision during a procedure. Once the procedure is finished, the deformable member can be drawn back into the tube.

Luminal grafts and methods of making and using the same. An exemplary luminal graft of the present disclosure is configured as a generally tubular element configured for nerve cells to grow therethrough and comprises at least one sheet of biological tissue having elastin fibers and collagen fibers, with the elastin fibers being a dominant component thereof; and a plurality of microchannels formed on a surface of the at least one sheet of biological tissue, each of the microchannels extending longitudinally between a first end and a second end of the at least one sheet of biological tissue and configured to provide intraluminal structural guidance to nerve cells proliferating therethrough.

A quick-connector for use with an autoretroperfusion and hypothermia system and methods of using the connector. The connector comprises a coolant inlet, a coolant outlet, a coolant reservoir, a blood lumen outlet, a blood lumen inlet, and a blood lumen, whereby the coolant outlet is configured to accept a cooling product from the reservoir, the reservoir is configured to accept cooling product from the coolant inlet. Flowing blood powered by the patient's heart may enter the connector through the blood lumen inlet, travel through the blood lumen while being cooled by cooling product in the reservoir, and leave the connector through the blood lumen outlet. The temperature of blood leaving the connector can be measured at the blood lumen outlet. Catheters can be attached to the blood lumen inlet and blood lumen outlet to receive and send blood, respectively. A cooling system can be attached to the coolant inlet and coolant outlet to provide a source of cooling product.

Devices and methods for treating a sinus venosus atrial septal defect. A treatment device may have a tubular shape and may be configured to be arranged to provide a conduit between an upper right pulmonary vein (PV) and a left atrium (LA). The device may have a proximal portion comprising a flexible mesh configured to anchor within the LA, a distal portion comprising a flexible mesh configured to anchor within the target PV, and a central portion having a plurality of elongate parallel bars. A method for treating a sinus venosus atrial septal defect may include percutaneously advancing the device through the femoral vein and inferior vena cava (IVC), and into the right atrium (RA). The method may include creating a trans-septal opening, passing the device through the opening into the LA, and toward the upper right PV to treat the defect.

The present technology is directed to adjustable interatrial shunting systems that selectively control blood flow between the left atrium and the right atrium of a patient. The adjustable interatrial devices include a shunting element having an outer surface configured to engage native tissue and an inner surface defining a lumen that enables blood to flow from the left atrium to the right atrium when the system is deployed across the septal wall. The systems can include an actuation assembly for selectively adjusting a geometry of the lumen and/or a geometry of a lumen orifice to control the flow of blood through the lumen.