Tissue access guidewire system and method

A system for guiding a surgical device to a desired position in a human body, the system comprising:

• a guidewire having a proximal end and a sharp and tissue penetrating distal end, and a coupling region at the proximal end;
• and
• an elongate surgical device having a proximal end and a flat, thin and flexible distal end region, wherein the distal end region comprises an abrasive member on one side and has an atraumatic surface on the opposite side, with a receiving coupling member disposed at or near the distal end, wherein the receiving coupling member comprises a channel having a side-opening configured to receive the coupling region of the guidewire and a movable cam configured to secure the guidewire and the surgical device together in an end-to-end configuration by securing the guidewire in the channel when the surgical device and guidewire are pulled axially relative to each other, wherein the surgical device comprises an abrasive surgical device.

A system for guiding a surgical device to a desired position in a human body, the system comprising:

• a guidewire having a proximal end and a sharp and tissue penetrating distal end, and a coupling member at the proximal end, wherein the coupling member comprises a shaped element;
• and
• an elongate surgical device having a proximal end and a flat, thin and flexible distal end region, wherein the distal end region comprises an abrasive member on one side and has an atraumatic surface on the opposite side, with a receiving coupling member disposed at or near the distal end, wherein the receiving coupling member is configured to receive the guidewire coupling element to secure the guidewire and the surgical device together in an end-to-end configuration to allow the distal end of the surgical device to be pulled distally by axial tension of the guidewire.