Devices, systems, and methods for pericardial access
First Claim
1. A system for use with a vacuum source for engaging a tissue, the system comprising:
- an engagement catheter comprising a proximal end, a distal end, first and second lumens extending between the proximal end and the distal end, an injection channel formed along a length of the engagement catheter, the injection channel being ring-shaped at its distal end and having at its distal end at least one opening for administering a substance to a targeted tissue, and a skirt operatively connected to the distal end, the skirt comprising a proximal end having a circumference substantially similar to an outer circumference of the engagement catheter, the skirt further comprising a distal end having a circumference larger than the outer circumference of the engagement catheter;
a delivery catheter comprising a proximal end, a distal end, and a hollow tube extending between the proximal end and the distal end, the delivery catheter configured such that the hollow tube is capable of insertion into the second lumen of the engagement catheter;
a needle located at the distal end of the delivery catheter; and
a vacuum port located at the proximal end of the engagement catheter, the vacuum port being operatively connected to the first lumen of the engagement catheter and capable of operative connection to a vacuum source;
wherein the first lumen of the engagement catheter includes a suction port located at or near the distal end of the engagement catheter, the suction port configured to allow the distal end of the skirt to removably engage a surface of a bodily tissue such that the skirt is capable of forming a reversible seal with the surface of the tissue when a vacuum source is operatively attached to the vacuum port.
1 Assignment
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Accused Products
Abstract
Devices, systems, and methods for accessing tissue, including the internal and external tissues of the heart, are disclosed. At least some of the embodiments disclosed herein provide access to the external surface of the heart through the pericardial space for localized delivery of leads to the heart tissue. At least some of the embodiments disclosed herein provide access to the pericardial space for removal of accumulated fluid. In addition, various disclosed embodiments provide devices, systems, and methods for engaging a tissue, for removing fluid from a space within a body, and for the delivery of substances to a targeted site for therapeutic purposes.
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Citations
41 Claims
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1. A system for use with a vacuum source for engaging a tissue, the system comprising:
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an engagement catheter comprising a proximal end, a distal end, first and second lumens extending between the proximal end and the distal end, an injection channel formed along a length of the engagement catheter, the injection channel being ring-shaped at its distal end and having at its distal end at least one opening for administering a substance to a targeted tissue, and a skirt operatively connected to the distal end, the skirt comprising a proximal end having a circumference substantially similar to an outer circumference of the engagement catheter, the skirt further comprising a distal end having a circumference larger than the outer circumference of the engagement catheter; a delivery catheter comprising a proximal end, a distal end, and a hollow tube extending between the proximal end and the distal end, the delivery catheter configured such that the hollow tube is capable of insertion into the second lumen of the engagement catheter; a needle located at the distal end of the delivery catheter; and a vacuum port located at the proximal end of the engagement catheter, the vacuum port being operatively connected to the first lumen of the engagement catheter and capable of operative connection to a vacuum source; wherein the first lumen of the engagement catheter includes a suction port located at or near the distal end of the engagement catheter, the suction port configured to allow the distal end of the skirt to removably engage a surface of a bodily tissue such that the skirt is capable of forming a reversible seal with the surface of the tissue when a vacuum source is operatively attached to the vacuum port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An engagement catheter for use with a vacuum source for engaging a tissue, the engagement catheter comprising:
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an elongated tube comprising a proximal end, a distal end, an outer wall positioned circumferentially along the length of the tube, and an inner wall positioned circumferentially along the length of the tube, wherein the outer wall and the inner wall form at least one suction channel along the length of the tube between the outer wall and the inner wall, the elongated tube further defining a delivery catheter lumen configured to receive a delivery catheter and an injection channel formed along a length of the elongated tube, the injection channel being ring-shaped at its distal end and having at its distal end at least one opening for administering a substance to a targeted tissue; a skirt operatively connected to the distal end of the tube, the skirt comprising a proximal end having a circumference substantially similar to an outer circumference of the tube, the skirt further comprising a distal end having a circumference larger than the circumference of the tube; a vacuum port in communication with the proximal end of the tube, the vacuum port being operatively connected to the at least one suction channel and capable of operative connection to the vacuum source; and a suction port in communication with the at least one suction channel at the distal end of the tube, the suction port configured to allow the distal end of the skirt to removably engage a surface of a bodily tissue such that the skirt is capable of forming a reversible seal with the surface of the tissue when a vacuum source is operatively attached to the vacuum port. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of engaging a tissue, the method comprising the steps of:
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providing a system, comprising; an engagement catheter comprising a proximal end, a distal end, first and second lumens extending between the proximal end and the distal end, an injection channel formed along a length of the engagement catheter, the injection channel being ring-shaped at its distal end and having at its distal end at least one opening for administering a substance to a targeted tissue, and a skirt operatively connected to the distal end, the skirt comprising a proximal end having a circumference substantially similar to an outer circumference of the engagement catheter, the skirt further comprising a distal end having a circumference larger than the outer circumference of the engagement catheter; a delivery catheter comprising a proximal end, a distal end, and a hollow tube extending between the proximal end and the distal end, the delivery catheter configured such that the hollow tube is capable of insertion into the second lumen of the engagement catheter; a needle located at the distal end of the delivery catheter; and a vacuum port located at the proximal end of the engagement catheter, the vacuum port being operatively connected to the first lumen of the engagement catheter and capable of operative connection to the vacuum source; wherein the first lumen of the engagement catheter includes a suction port located at or near the distal end of the engagement catheter, the suction port configured to allow the distal end of the skirt to removably engage a surface of a targeted tissue such that the skirt is capable of forming a reversible seal with the surface of the targeted tissue when a vacuum source is operatively attached to the vacuum port; and inserting the engagement catheter into a body such that the distal end of the engagement catheter is positioned at or near the targeted tissue. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification