Devices, systems, and methods for obtaining biopsy tissue samples
First Claim
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1. A system for obtaining a tissue sample from a targeted tissue, the system comprising:
- a first catheter having a proximal end, distal end, and an interior, the distal end of the first catheter comprising a cutting portion adapted to cut a targeted biological tissue;
a second catheter slidably received within the interior of the first catheter, the second catheter having a proximal end, an interior, a distal end adapted to puncture the targeted tissue, and an opening disposed proximal to the distal end of the second catheter and in communication with the interior of the second catheter;
a torque mechanism comprising at least one dial coupled with at least one shaft, the at least one dial configured for rotational movement and the at least one shaft adapted to convert the rotational movement of the at least one dial into linear movement of the at least one shaft, the at least one shaft coupled with the first catheter such that the at least one shaft is adapted to advance and retract the first catheter, and the at least one shaft coupled with the second catheter such that the at least one shaft is adapted to advance and retract the second catheter; and
a deliver catheter comprising an elongated tube having a proximal end, a distal end, a wall, and a first lumen and a second lumen, the delivery catheter adapted for at least partial intravascular insertion into a mammalian body, and the at least one lumen of the delivery catheter extending from approximately the proximal end of the tube to or near the distal end of the tube and comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube, the first and second lumens each extending from approximately the proximal end of the tube to or near the distal end of the tube, each positioned longitudinally adjacent to each other, and each comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube, the first lumen of the delivery catheter having the catheter slidably disposed therein, and the second lumen of the delivery catheter having a navigational tool disposed therein, the navigational tool configured to be advanceable through the outlet of the second lumen.
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Abstract
Devices, systems, and methods for accessing tissue in a minimally invasive manner and taking a biopsy tissue sample therefrom are disclosed. At least some of the embodiments disclosed herein enable a tissue sample to be taken from the external surface of the heart in a non-invasive manner. In addition, various disclosed embodiments provide devices, systems and methods for accessing the pericardial space through the interior of the heart and engaging the epicardial surface and removing a tissue sample therefrom for diagnostic purposes through the use of suction.
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Citations
49 Claims
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1. A system for obtaining a tissue sample from a targeted tissue, the system comprising:
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a first catheter having a proximal end, distal end, and an interior, the distal end of the first catheter comprising a cutting portion adapted to cut a targeted biological tissue; a second catheter slidably received within the interior of the first catheter, the second catheter having a proximal end, an interior, a distal end adapted to puncture the targeted tissue, and an opening disposed proximal to the distal end of the second catheter and in communication with the interior of the second catheter; a torque mechanism comprising at least one dial coupled with at least one shaft, the at least one dial configured for rotational movement and the at least one shaft adapted to convert the rotational movement of the at least one dial into linear movement of the at least one shaft, the at least one shaft coupled with the first catheter such that the at least one shaft is adapted to advance and retract the first catheter, and the at least one shaft coupled with the second catheter such that the at least one shaft is adapted to advance and retract the second catheter; and a deliver catheter comprising an elongated tube having a proximal end, a distal end, a wall, and a first lumen and a second lumen, the delivery catheter adapted for at least partial intravascular insertion into a mammalian body, and the at least one lumen of the delivery catheter extending from approximately the proximal end of the tube to or near the distal end of the tube and comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube, the first and second lumens each extending from approximately the proximal end of the tube to or near the distal end of the tube, each positioned longitudinally adjacent to each other, and each comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube, the first lumen of the delivery catheter having the catheter slidably disposed therein, and the second lumen of the delivery catheter having a navigational tool disposed therein, the navigational tool configured to be advanceable through the outlet of the second lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for accessing a targeted tissue and obtaining a tissue sample therefrom, the system comprising:
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a delivery catheter comprising an elongated tube having a proximal end, a distal end, a wall, and a first lumen and a second lumen, the delivery catheter adapted for at least partial intravascular insertion into a mammalian body, and the at least one lumen of the deliver catheter extending from approximately the proximal end of the tube to or near the distal end of the tube and comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube, the first and second lumens each extending from approximately the proximal end of the tube to or near the distal end of the tube, each positioned longitudinally adjacent to each other, and each comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube; and a biopsy system slidably disposed within the at least one lumen of the delivery catheter, the biopsy system comprising; a first catheter having a proximal end, a distal end, and an interior extending between the proximal end and the distal end, and the distal end of the first catheter comprising a cutting portion adapted biological tissue, a second catheter slidably received within the interior of the first catheter, the second catheter having a proximal end, a distal end, and an interior extending between the proximal end and the distal end, and the distal end of the second catheter comprising a tapered configuration configured to puncture the targeted tissue and an opening in communication with the interior of the second catheter, and a torque mechanism comprising at least one dial coupled with a first shaft and at least one dial coupled with a second shaft, each of the at least one dials configured for rotational movement and the respective shaft adapted to convert the rotational movement of the at least one dial into linear movement of the respective shaft, the first shaft of the torque mechanism coupled with the first catheter such that the first shaft of the torque mechanism is adapted to advance and retract the first catheter, and the second shaft coupled with the second catheter such that the second shaft is adapted to advance and retract the second catheter; the first lumen of the delivery catheter having the biopsy system slidably disposed therein, and the second lumen of the delivery catheter having a navigational tool disposed therein, the navigational tool configured to be advanceable through the outlet of the second lumen. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method of engaging a tissue and retrieving a tissue sample therefrom, the method comprising the steps of:
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inserting into a blood vessel an elongated tube having a proximal end, a distal end, and a first lumen, such that the distal end of the tube is in contact with a first targeted biological tissue on an interior wall of a mammalian heart; accessing the pericardial space through the first targeted tissue; inserting at least a distal end of a delivery catheter into the first lumen of the tube, the delivery catheter comprising at least a first lumen comprising a bend at or near the distal end of the delivery catheter and an outlet at or near the distal end of the delivery catheter; advancing at least the distal end of the delivery catheter through the first targeted tissue and into the pericardial space such that the distal end of the delivery catheter is positioned at or near a second targeted biological tissue; inserting at least a portion of a biopsy system into the at least one lumen of the delivery catheter, the biopsy system comprising a first catheter and a second catheter, the first catheter of the biopsy system comprising a distal end having a cutting portion, an outlet disposed at or near the distal end, and an interior in communication with the outlet, the second catheter of the biopsy system slidably disposed within the interior of the first catheter and comprising an interior, a distal end adapted to puncture the second targeted tissue and an opening disposed at or near the distal end of the second catheter and in communication with the interior of the second catheter; advancing the first and second catheters of the biopsy system through the outlet of the first lumen of the delivery catheter such that the distal ends of the first and second catheters are positioned at or near the second targeted tissue; piercing the second targeted tissue with the second catheter of the biopsy system; and collecting a sample of the second targeted tissue into the opening of the second catheter of the biopsy system. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A system for obtaining a tissue sample from a targeted tissue, the system comprising:
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a catheter having a proximal end, distal end, and an interior extending between the proximal and distal ends, the distal end comprising a tapered configuration, a cutting edge capable of slicing a targeted biological tissue, and an opening in communication with the interior of the catheter; a torque mechanism coupled with the proximal end of the catheter, the torque mechanism comprising at least one dial coupled with at least one shaft, the at least one dial being configured for rotational movement and the at least one shaft adapted to convert the rotational movement of the at least one dial into either linear movement of the catheter or rotational movement of the catheter, and rotation of the catheter in a first direction causes the cutting edge of the catheter to slice a sample of a targeted tissue and wherein the cutting edge and the opening are configured to allow the sample to be drawn through the opening and into the interior of the catheter; and a delivery catheter comprising an elongated tube having a proximal end, a distal end, a wall, and a first lumen and a second lumen, the delivery catheter adapted for at least partial intravascular insertion into a mammalian body, and the at least one lumen of the delivery catheter extending from approximately the proximal end of the tube to or near the distal end of the tube and comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube, the first and second lumens each extending from approximately the proximal end of the tube to or near the distal end of the tube, each positioned longitudinally adjacent to each other, and each comprising a bend relative to the tube at or near the distal end of the tube and an outlet through the wall of the tube at or near the distal end of the tube, the first lumen of the delivery catheter having the catheter slidably disposed therein, and the second lumen of the delivery catheter having a navigational tool disposed therein, the navigational tool configured to be advanceable through the outlet of the second lumen. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method of retrieving a tissue sample from a body, the method comprising the steps of:
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inserting into a blood vessel an elongated tube having a proximal end, a distal end, and a first lumen, such that the distal end of the tube is in contact with a first targeted biological tissue on an interior wall of a mammalian heart; accessing a pericardial space of the heart through the first targeted tissue; inserting at least a distal end of a delivery catheter into the first lumen of the tube, the delivery catheter comprising at least one lumen comprising a bend at or near the distal end of the delivery catheter and an outlet at or near the distal end of the delivery catheter; advancing at least the distal end of the delivery catheter through the first targeted tissue and into the pericardial space such that the distal end of the delivery catheter is positioned at or near a second targeted biological tissue; inserting at least a portion of a biopsy system into the at least one lumen of the delivery catheter, the biopsy system comprising a catheter comprising a distal end having a tapered configuration, a cutting edge configured to slice the second targeted tissue and an opening in communication with the interior of the catheter; advancing the catheter of the biopsy system through the outlet of the first lumen of the delivery catheter such that the distal end of the catheter is positioned at or near the second targeted tissue; piercing the second targeted tissue with distal end of the catheter; and rotating the distal end of the catheter such that the cutting edge slices the second targeted tissue, detaches a sample thereof and draws the sample into the interior of the catheter. - View Dependent Claims (44, 45, 46, 47, 48, 49)
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Specification