Transseptal Puncturing Device
AssigneeMedtronic, Inc.
InventorsMark A. Benscoter, Kevin A. Knutsen
Life of this patent
Estimating the term…
Abstract
A medical device for creating access through tissue is disclosed. In an embodiment, the device facilitates puncturing of tissue at a target access site while limiting the risk of perforating other tissue adjacent the target site. For example, the device may be used to puncture the atrial septum for access into the left atrium from the right atrium. According to aspects of this disclosure, the device integrates a puncturing needle into a dual lumen elongate tube. The extension of the needle beyond the distal endface of the elongate tube may be limited by an actuator coupled in the handle of the device.
Claims18
A transseptal puncturing device, comprising
- an elongate tubular body having a proximal end and a distal end;
- a central lumen within said tubular body having a proximal opening at the proximal end and a distal opening at the distal end;
- an offset lumen having a longitudinal length extending partially within the length of the tubular body said offset lumen being coextensive at least in part with the central lumen and having a first opening terminating within the length of the tubular body, wherein the first opening is in fluid communication with the central lumen;
- a handle coupled to the distal end of the tubular body, said handle having a delivery actuator;
- a needle preloaded within the offset lumen and coupled to the delivery actuator, wherein the needle is moveable from a retracted position to an extended position in response to actuation of the delivery actuator.
A method for performing transseptal puncturing of a patient's cardiac tissue, comprising
- providing an elongate tubular device configured for insertion through the patient's vasculature comprising a central lumen and an offset lumen terminating within the central lumen, wherein the central lumen defines a cross-sectional area sized to slidably receive a guide wire and the offset lumen defines a cross-sectional area sized to slidably receive a needle;
- advancing a distal region of the elongate tubular device to contact the patient's transseptal wall;
- deploying the needle from a retracted position to an extended position to puncture the transseptal wall, wherein a distal portion of the needle is positioned within the offset lumen in the retracted position and the distal portion of the needle is withdrawn from the elongate tubular device in the extended position.
Dependencies are inferred from the claim text.