Balloon catheters that includes inner and outer elongate shafts, each of which is secured relative to an end of an inflatable member. The inner and outer elongate shafts are secured relative to one another at one more discrete connection locations. The balloon bonding locations are disposed radially inward relative to an outer dimension of the outer elongate shaft.

The present invention relates to a catheter apparatus with an anchoring device to stabilize the catheter tip when in use, such as when infusing, injecting, or delivering substances, devices or other catheters into a patient. The apparatus according to various embodiments deploys an anchoring device that stabilizes the catheter tip and enables adjustment of the blood flow during use.

Guide extension catheters and related methods are disclosed. A guide extension catheter can comprise an elongate tube member, a push member, and a concave track. The elongate tube member can define a lumen and three distinct portions of different diameter. A distal portion can define a first diameter, a proximal portion can define a second diameter which is larger than the first diameter but smaller than a lumen of a guide catheter with which the guide extension catheter is used, and a tapered portion, positioned between the distal portion and the proximal portion, can have a variable diameter. The push member can be eccentrically coupled relative to the tube member and extends proximally therefrom for slidably positioning the tube member within and partially beyond a distal end of the guide catheter. The concave track forms a transition between the tube member and the push member, and defines a partially cylindrical opening leading into the tube member.

Disclosed is a balloon catheter (1000) with a drug coating. The balloon catheter comprises a pushing catheter (310), at least one expandable first balloon (100) located at a distal end of the pushing catheter (310), and a pre-expansion mechanism. The first balloon (100) is fixedly arranged on the pushing catheter (310). The pre-expansion mechanism (200) comprises an expansion sleeve (220) and a connector (240). The expansion sleeve (220) is used for housing the first balloon (100) before the first balloon (100) is not expanded and when same is pre-expanded. The connector (240) is connected to the expansion sleeve (220) and axially moves with respect to the pushing catheter (310) after the first balloon (100) is pre-expanded, so that the first balloon (100) is exposed outside the expansion sleeve (220). The balloon catheter (1000) with a drug coating can effectively pre-expand a lesion location and can also effectively prevent the loss of a balloon with a drug coating during a delivery process, and is simple in terms of a surgical operation process.

A method for sealing and flushing a delivery member includes sealing one or more lumens and flushing air from the one or more lumens. An interventional device delivery system includes a handle assembly and a delivery member. The handle assembly includes a catheter holder with a passageway therethrough. A flush block is associated with the catheter holder and has a flush port and a flush chamber. The delivery member is associated with the handle assembly and includes a plurality of catheters. At least one of the catheters has a proximal end disposed within the passageway in the catheter holder and is in fluid communication with the flush chamber.

A balloon guiding sheath may include an elongated sheath comprising a proximal end, a distal end, an inner tube, an outer tube surrounding the inner tube, an access port, a distal port, and a working lumen extending through an interior portion of the elongated sheath between the access port and the distal port. The balloon guiding sheath may also include an inflatable balloon located on an outer surface of the elongated sheath adjacent the distal end. The balloon guiding sheath may include a plurality of inflation holes extending through a side wall of the elongated sheath. The elongated sheath may be sized and configured to enable direct insertion into a patient's vasculature through an arteriotomy in at least one of a femoral artery and vertebral artery to position the inflatable balloon at a target site.

The embodiments described herein relate to a self-positioning, quick-deployment low profile transvenous electrode system for sequentially pacing both the atrium and ventricle of the heart in the “dual chamber” mode, and methods for deploying the same.

A multi-headed catheter for fluid delivery and a method of placing a multi-headed catheter for fluid delivery are provided. The multi-headed catheter includes a first tube extending along an axis, wherein the first tube has at least one exit hole provided at a distal end of the first tube to define a perfusion section of the first tube; and a second tube extending along the axis, wherein at least a portion of the second tube is disposed within the first tube, wherein the second tube has at least one exit hole provided at a distal end of the second tube to define a perfusion section of the second tube. The distal end of the second tube is configured to exit said first tube at an opening provided along a wall of the first tube. The perfusion sections of the first tube and the second tube can be independently placed to deliver fluid to distinct anatomical areas within a surgical wound site.

The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for delivering energy to difficult to access tissue regions (e.g. peripheral lung tissues), and/or reducing the amount of undesired heat given off during energy delivery.

The disclosure relates to medical devices comprising coaxial cannulae. A medical device includes an outer cannula and a coaxial inner cannula that is secure to the inner cannula. The circumferential wall of one of the cannulae defines a pattern of openings that extends along a spiral path about the lengthwise axis of the cannula.