Pericardial access devices and methods

Abstract

Described here are devices, systems, and methods for accessing the pericardial space through the pericardium. The access devices may include a plurality of elongate members having lumens that may be advanced together through the body to the pericardium. The elongate members may have different lengths and may be slideably positioned one within the lumen of another. At least one of the elongate members may comprise a distal tip configured to pierce tissue. In some instances, the access devices may also comprise a locking member to constrain the position of one elongate member relative to another.

Description

technical field [0001] Devices and methods for gaining access to the pericardial space through the pericardium are described herein. Background technique [0002] It may be desirable to gain access to the internal and external structures of the heart in order to treat cardiovascular disease. In some cases, treatment may involve delivery of one or more devices to the heart. The heart can be accessed in a variety of ways. For example, intravascular approaches may be used to access the heart for device delivery. In such an approach, the device can be advanced from the femoral vein to the vena cava, through which the ventricles and valves on the right side of the heart can be accessed (eg, right atrium, right ventricle, etc.). An endovascular approach can also be used to access the left side of the heart through the transseptal puncture. Alternatively, the left atrium and left ventricle can be accessed endovascularly from the aorta via a retrograde route. [0003] Endovascu...

AI Technical Summary

Problems solved by technology

Larger needles may be more rigid and easier to maneuver, but, as mentioned above, may carry a serious risk of puncturing the heart

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