A blood vessel dissecting device is disclosed, which includes a dissecting device which, when being inserted into a living body along a blood vessel, dissects tissue in a direction of alignment thereof with the blood vessel, and a cutting device which, when being inserted into the living body along the blood vessel, cuts tissue surrounding the blood vessel in a direction of alignment thereof with the blood vessel. The cutting device includes a main body section which is inserted into the living body and holds the tissue between itself and the dissecting device, and a cutting section which cuts the tissue held between the main body section and the dissecting device.

A resiliently expandable elongate tubular spring structure, e.g., corresponding to a metal mesh type structure, mountable or mounted to a scoring balloon catheter includes multiple ring structures that are longitudinally separated from each other along portions of a balloon working region, and which are resiliently radially expandable in response to outwardly directed balloon expansion forces. Pairwise adjacent ring structures are structurally coupled and separated from each other by a scoring link, e.g., a single scoring link, configured as a traumatic structure with respect to vascular tissue, e.g., by way of having a square, trapezoidal, or raised blade tissue scoring/cutting profile. Each ring structure includes a pair of radially resiliently radially expandable annular springs, longitudinally separated from each other by a plurality of spacing elements, e.g., wire links, and which are atraumatic or substantially atraumatic structures relative to the scoring link with respect to tissue.

Tissue compression devices having a tension limiting strap retainer and methods of using the same. The tissue compression devices described herein may include a strap retainer that is attached to a base by an elastic member that is configured to draw the strap retainer towards the base. The tissue compression devices described herein may also include a tension indicator that extends between the base of the tissue compression device and strap retainer. The tension indicator may be configured to limit the travel distance of the strap retainer away from the base in response to forces acting on the strap retainer. The tension indicator may also provide visual feedback to a user of the tension force in a strap to attach the tissue compression device to a patient.

The described invention provides an endovascular device including a tube containing a first end comprising a bifurcation and a second end comprising an opening. The bifurcation at the first end contains a first branch comprising a diameter of the first branch and a second branch comprising a diameter of the second branch, and the opening at the second end contains a primary opening comprising a diameter of the primary opening and a secondary opening comprising a diameter of the secondary opening. The first branch comprising the diameter of the first branch and the primary opening comprising the diameter of the primary opening form a working lumen comprising a diameter of the working lumen and a length of the working lumen, wherein the diameter of the working lumen comprises the diameter of the first branch and the diameter of the primary opening. The second branch comprising the diameter of the second branch and secondary opening comprising the diameter of the secondary opening form a support lumen comprising a diameter of the support lumen and a length of the support lumen, wherein the diameter of the support lumen comprises the diameter of the second branch and the diameter of the secondary opening.

The described invention further provides an endovascular device comprising a tube comprising a side-hole, a first segment comprising a primary opening and a second segment. The first segment extends from the primary opening to the side-hole, and the second segment extends from the side-hole and tapers to an end. The side-hole and the first segment form a working lumen comprising a diameter of the working lumen and a length of the working lumen, and the second segment forms a support lumen comprising a diameter of the support lumen and a length of the support lumen.

Disclosed are systems, methods, and devices for percutaneous retrieval of objects, such as endovascular devices, from an internal body space. The present inventions have vascular, non-vascular (gastrointestinal), and surgical (laproscopic) applications. The inventions include a a wire woven distal end that is formed from wires and includes a substantially cylindrical main body section comprising a leading end, a trailing end, and a middle portion extending between the leading end and the trailing end and defining a longitudinal axis of the main body section, and a flare defining a mouth of the wire woven distal end that projects circumferentially from the leading end of the main body section, wherein when at least a portion of the retrieval end is transitioned to a compressed state following capture of an object, the retrieval end exerts an inward force that at least partially collapses or compresses the object.

Vascular access devices, systems, and methods of their use are provided. In one embodiment, a vascular access device includes a catheter, a balloon, and an inflation lumen. The catheter includes an elongate flexible shaft having a proximal end and a distal end with a primary lumen therethrough. The balloon is disposed about the distal end of the catheter. The inflation lumen is in fluid communication with the balloon and extends toward the proximal end of the shaft of the catheter. The balloon is inflatable into a shape having a first open end, a second open end, a sidewall between the first and second open ends, and a passageway therethrough, which, when the balloon is deployed and inflated within a vessel, permits blood flowing in the vessel to flow through the passageway. The balloon further includes a balloon lumen which is coupled at its first end to the primary lumen of the catheter and which extends to an aperture in the sidewall of the balloon, thereby providing a hemostatic connection and luminal access to a wall of the vessel via the primary lumen of the catheter.

A method of atraumatically hydrodissecting and maintaining endothelial function and structure of a vascular target includes forming an incision in tissue proximate one end to realize an insertion space, inserting a distal end of a cannula and/or endoscope into the insertion space and while visualizing the vascular target, ejecting a hydrodissecting fluid from the distal end of the cannula and/or endoscope to substantially separate or dissect the vascular target from the surrounding tissue, while advancing the distal end through the space as it is enlarged by the hydrodissecting fluid, to a distal target end of the vascular target. The hydrodissecting fluid is formulated to minimize or prevent formation of microthrombi in the hydrodissected vascular target. The hydrodissecting fluid is a water-based vascular graft treatment solution and can include any of a balance salt solution, a metallic salt solution, such as Plasma-Lyte® A, a vascular graft treatment solution, such as Duragraft® solution, L-Arginine, aspirin and low molecular weight heparin.

Interventional procedures on the carotid arteries are performed through a transcervical access while retrograde blood flow is established from the internal carotid artery to a venous or external location. A system for use in accessing and treating a carotid artery includes an arterial access device, a shunt fluidly connected to the arterial access device, and a flow control assembly coupled to the shunt and adapted to regulate blood flow through the shunt between at least a first blood flow state and at least a second blood flow state. The flow control assembly includes one or more components that interact with the blood flow through the shunt.

An apparatus and method for minimally invasive suturing is disclosed. A suturing device for minimally invasive suturing includes proximal section having a proximal end, a distal end, and a longitudinal axis therebetween; a suture head assembly extending from the distal end of the proximal section; a suturing needle having a pointed end and a blunt end, the suturing needle capable of rotating about an axis approximately perpendicular to a longitudinal axis of the proximal section, wherein the pointed end of the suturing needle is positioned within the suture head assembly prior to and after rotation of the suturing needle; and an actuator extending from the proximal end of the proximal section to actuate a drive mechanism having a needle driver for engaging and rotating the suturing needle.

Ring comprising: an outer belt (3) equipped with closing means (7) for closing the ring (1) around a duct (2); an inner chamber (4) that can be inflated and deflated; a flexible inflation/deflation tube (5);
wherein the lips have contact surfaces facing each other, the closing means comprising at least one perforation arranged on the contact surface of a first of the two lips and at least one protrusion protruding from the contact surface of a second of the two lips, the protrusion and the perforation being configured so that the protrusion is retained in the perforation by fitting, the fitting being selected to be released in the event of overpressure in the ring.