A medical device having an imaging function includes a shaft main body portion having an image acquiring lumen and a guide wire lumen extending from a distal side to a proximal side of the shaft main body portion. A proximal portion of the shaft main body includes a first shaft proximal portion in which the image acquiring lumen is disposed, and a second shaft proximal portion in which the guide wire lumen is disposed, and which are bifurcated. A shaft distal portion has a common lumen in which the image acquiring lumen and the guide wire lumen converge, a first hub portion is interlocked with the first shaft proximal portion, a second hub portion is interlocked with the second shaft proximal portion, and a hub casing collectively covers the first shaft proximal portion, the second shaft proximal portion, the first hub portion and the second hub portion.

Tortuosity of vessels at or leading to the site of minimally invasive procedures is a problem for conducting such procedures as they increase the difficulty to guide the procedural catheters through tortuous vessels. Methods and apparatus for stabilization of the sheaths and catheters during access, procedures, and withdrawal in these tortuous vessels are disclosed. The apparatus and method for improving access include application of a pull component to the stabilized procedural catheter using a stabilization catheter/wire in addition to a push component from the percutaneous access to make the access easier while enabling use of more flexible catheters and softer wires. These methods and devices address the problems of trauma to the vessels during access, procedure and removal of catheters and wires, improve pushability of softer catheters and wires, and also substantially reduce substantially the procedure time.

The various embodiments herein relate a catheter advancement device having an elongate shaft and a capsule attached to or integral with the shaft, and related methods for assisting with advancement of catheters such as guiding catheters while reducing damage to the inner wall of the blood vessel. Some capsules have a distal plug portion and a neck portion having a smaller diameter than the plug. Other capsules have a channel defined along the outer surface of the capsule.

The described invention provides an endovascular device comprising a tube comprising a first end comprising a bifurcation and a second end comprising an opening. The bifurcation at the first end comprises a first branch and a second branch. The opening at the second end comprises a primary opening and a secondary opening. The first branch and the primary opening form a working lumen. The second branch and the secondary opening form a support lumen. 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 side-hole and the first segment form a working lumen. The second segment forms a support lumen.

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.

The present invention relates to a method for positioning a tip of a pacemaker lead that has passed through coronary sinus into an interventricular septum. More particularly, it relates to a method for positioning a tip of a pacemaker lead that has passed through a coronary sinus into an interventricular septum in order to more effectively transmit an electrical stimulus in a treatment using a pacemaker for patients with arrhythmia. A method of positioning a tip of a pacemaker lead, which has passed through a coronary sinus, into an interventricular septum, in order to effectively transmit electrical stimulus, includes: inserting into an intervention wire through a superior vena cava and a coronary sinus to pass through the interventricular septum and then guiding the intervention wire to an inferior vena cava; and positioning the tip of the lead into the interventricular septum by inserting the pacemaker lead along the intervention wire.

A catheter and a surgical medical device. The catheter includes at least; a first elastic member positioned at an end portion of the catheter: a second elastic member connected with the first elastic member, the second elastic member being curved with a first radius of curvature to protrude toward a first direction; a first wire connected with a first surface of the first elastic member, and configured to pull the catheter to bend the catheter in the first direction; a second wire connected with a second surface of the first elastic member, which is opposite to the first surface, and configured to pull the catheter to bend the catheter in a second direction; and a tube containing the first elastic member, the second elastic member, the first wire, and the second wire.

The invention generally relates to intracavitary medical devices and methods for using the devices. In one aspect, the devices comprise: a tube comprising a longitudinal body having opposed proximal and distal ends, and at least three lumens extending there between; and an expandable balloon region located at the distal end of the tube; wherein at least one lumen comprises at least one of: a drainage lumen which opens at a portion of the distal end of the tube and configured to allow fluid communication from a body cavity into the drainage lumen, an inflation lumen connected to an interior of the balloon region and configured to enable passage of a distending fluid to control expansion and contraction of the balloon region, and an instillation lumen which opens at a portion of the distal end of the tube and configured to allow a fluid to be introduced from the instillation lumen into the body cavity.

The present invention is an access sheath comprising a tube or sheath with a passageway primarily for endoscopic procedures accessing the ureter through the bladder. The sheath has a bend limiting feature to limit the bend angle or bend radius. The sheath exhibits flexibility up to this limit at which point it becomes rigid. Excessive force is required to bend the sheath beyond the bend limit and would result in the kinking of the tubular frame.

A lead for navigating small vessels and a catheter system for implantation of leads into small vessels. Veins that return blood to the heart against the force of gravity often have valves in them to prevent backflow of deoxygenated blood. Leads and catheter systems in accordance with embodiments of the invention allow cannulation and lead implantation in small, tortuous, obstructed, and difficult to access veins enabling a range of stimulation and sensing applications.