Catheter devices, needle assemblies, kits and methods

A kit including:

• a needle device comprising an elongated needle having a proximal end, a sharpened distal end and an inner lumen extending between the proximal end and sharpened distal end;
• the needle device further including a handle to which the proximal end of the needle is attached, the handle including an upper grip arranged to rotate around an upper pivot and a lower grip arranged to rotate around a lower grip, the upper grip having a proximal end portion located on a proximal side of the upper pivot and a distal end portion located on a distal side of the upper pivot, the lower grip having a proximal end portion located on a proximal side of the lower pivot and a distal end portion located on a distal side of the lower pivot, the upper grip including a first inwardly protruding catch, the lower grip including a second inwardly protruding catch;
• and
• a catheter device configured to provide access to a hollow organ, the catheter device configured to be used with the needle device and comprising a catheter body having a proximal end, a distal end, and an elongate internal channel extending between the proximal and distal ends, the elongate internal channel configured to receive the elongated needle, the catheter body further including one or more cutting edges extending in a proximal direction from a location at or near the distal end, and first and second recesses configured to respectively mate with the first and second inwardly protruding catches of the needle device for detachably coupling the needle device to the catheter device.

A method for accessing a hollow organ comprising:

• providing a needle device and a catheter device, the needle device comprising an elongated needle having a proximal end, a sharpened distal end and an inner lumen extending between the proximal end and sharpened distal end;
• the needle device further including a handle to which the proximal end of the needle is attached, the handle including an upper grip arranged to rotate around an upper pivot and a lower grip arranged to rotate around a lower grip, the upper grip having a proximal end portion located on a proximal side of the upper pivot and a distal end portion located on a distal side of the upper pivot, the lower grip having a proximal end portion located on a proximal side of the lower pivot and a distal end portion located on a distal side of the lower pivot, the upper grip including a first inwardly protruding catch, the lower grip including a second inwardly protruding catch, the catheter device configured to provide access to a hollow organ, the catheter device having a proximal end, a distal end, and an elongate internal channel extending between the proximal and distal ends, the elongated needle residing inside the elongate internal channel, the catheter body further including one or more cutting edges extending in a proximal direction from a location at or near the distal end, the catheter body including first and second recesses that respectively mate with the first and second inwardly protruding catches of the needle device for detachably coupling the needle device to the catheter device.
• making a puncture in a skin of a patient and the hollow organ using the sharpened distal end of the elongated needle while in the elongate internal channel of the catheter device;
• inserting at least a distal part of the elongated needle into the hollow organ;
• inserting a guide wire into the elongate internal channel of the catheter body such that the guide wire is at least partially positioned in the hollow organ;
• detaching the needle device from the catheter device by respectively removing the first and second inwardly protruding catches of the needle device handle from the first and second recesses in the catheter body;
• removing the elongated needle from the hollow organ;
• increasing a length of the puncture by inserting the cutting edges of the catheter body of the catheter device into the puncture.