Cardiac tissue penetrating devices, methods, and systems for treatment of congestive heart failure and other conditions
First Claim
1. A tissue penetrating device comprising:
- an elongate shaft having a proximal end and a distal end and a lumen extending between the proximal end and the distal end, wherein the proximal end is positionable outside of a patient'"'"'s body and the distal end is positionable within the patient'"'"'s body;
a first needle disposed within the lumen of the elongate shaft and extendable distally of the elongate shaft'"'"'s distal end between a first orientation and a second orientation, the first needle having a proximal end and a distal end with a lumen extending between the proximal end and the distal end, wherein in the first orientation the first needle is disposed within the elongate shaft'"'"'s lumen and is substantially aligned with an axis of the elongate shaft'"'"'s lumen, and wherein in the second orientation the first needle is extended distally of the elongate shaft'"'"'s distal end and bends away from the axis of the lumen; and
a second needle disposed within the first needle'"'"'s lumen, the second needle being extendable distally from a distal tip of the first needle when the first needle is positioned in the first orientation and being extendable distally from the distal tip of the first needle when the first needle is positioned in the second orientation so as to penetrate tissue of a patient, the second needle being retractable within the lumen of the first needle subsequent to penetration of the tissue so that the second needle is fully disposed within the first needle'"'"'s lumen;
wherein when the second needle is extended distally of the distal tip of the first needle, a distal end of the second needle is coaxially aligned with the distal tip of the first needle;
wherein the first needle is made of a flexible shape-memory material having a preconfigured bend or curve such that the first needle bends or curves from the first orientation to the second orientation as the first needle is extended distally of the elongate shaft'"'"'s distal end; and
wherein the second needle comprises a proximal end and an open distal end with a lumen extending between the proximal end and the open distal end such that a guidewire is insertable through the lumen and through the open distal end of the second needle.
1 Assignment
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Accused Products
Abstract
According to one embodiment, a tissue penetrating device includes an elongate shaft having a proximal end, a distal end, and a lumen extending there between. A first needle is disposed within the lumen of the elongate shaft and is extendable therefrom between a first configuration and a second configuration. In the first configuration, the first needle is disposed within the elongate shaft'"'"'s lumen and is substantially aligned with an axis of the lumen. In the second configuration, the first needle extends distally of the elongate shaft'"'"'s distal end and bends away from the lumen'"'"'s axis. A second needle is disposed within a lumen of the first needle and is extendable therefrom when the first needle is positioned in the first configuration and when the first needle is positioned in the second configuration. The second needle may be extended from the first needle to penetrate tissue of a patient.
198 Citations
24 Claims
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1. A tissue penetrating device comprising:
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an elongate shaft having a proximal end and a distal end and a lumen extending between the proximal end and the distal end, wherein the proximal end is positionable outside of a patient'"'"'s body and the distal end is positionable within the patient'"'"'s body; a first needle disposed within the lumen of the elongate shaft and extendable distally of the elongate shaft'"'"'s distal end between a first orientation and a second orientation, the first needle having a proximal end and a distal end with a lumen extending between the proximal end and the distal end, wherein in the first orientation the first needle is disposed within the elongate shaft'"'"'s lumen and is substantially aligned with an axis of the elongate shaft'"'"'s lumen, and wherein in the second orientation the first needle is extended distally of the elongate shaft'"'"'s distal end and bends away from the axis of the lumen; and a second needle disposed within the first needle'"'"'s lumen, the second needle being extendable distally from a distal tip of the first needle when the first needle is positioned in the first orientation and being extendable distally from the distal tip of the first needle when the first needle is positioned in the second orientation so as to penetrate tissue of a patient, the second needle being retractable within the lumen of the first needle subsequent to penetration of the tissue so that the second needle is fully disposed within the first needle'"'"'s lumen; wherein when the second needle is extended distally of the distal tip of the first needle, a distal end of the second needle is coaxially aligned with the distal tip of the first needle; wherein the first needle is made of a flexible shape-memory material having a preconfigured bend or curve such that the first needle bends or curves from the first orientation to the second orientation as the first needle is extended distally of the elongate shaft'"'"'s distal end; and wherein the second needle comprises a proximal end and an open distal end with a lumen extending between the proximal end and the open distal end such that a guidewire is insertable through the lumen and through the open distal end of the second needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of penetrating tissue of a patient, the method comprising:
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providing a tissue penetrating device comprising; an elongate shaft having a proximal end, a distal end, and a lumen extending between the proximal end and the distal end; a first needle disposed within the lumen of the elongate shaft and extendable distally of the elongate shaft'"'"'s distal end between a first orientation and a second orientation, the first needle having a proximal end, a distal end, and a lumen extending between the proximal end and the distal end; and a second needle disposed within the first needle'"'"'s lumen and extendable therefrom; advancing the first needle distally of the elongate shaft'"'"'s distal end so as to position the first needle'"'"'s distal end adjacent the patient'"'"'s tissue, wherein the first needle bends away from an axis of the elongate shaft'"'"'s lumen as the first needle extends distally of the elongate shaft'"'"'s distal end; advancing the second needle distally of a distal tip of the first needle so as to penetrate the patient'"'"'s tissue with the second needle; and advancing the first needle over the second needle and through the patient'"'"'s tissue so that the second needle is retracted and fully disposed within the first needle'"'"'s lumen; wherein when the second needle is extended distally of the distal tip of the first needle, a distal end of the second needle is coaxially aligned with the distal tip of the first needle; and wherein the first needle is made of a flexible shape-memory material having a preconfigured bend or curve such that the first needle bends or curves from the first orientation to the second orientation as the first needle is extended distally of the elongate shaft'"'"'s distal end; and wherein in the second orientation, the first needle has a straight section that extends from the elongate shaft'"'"'s distal end and that is axially aligned with the elongate shaft and a curved section that extends between the straight section and the distal end of the first needle. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of penetrating cardiac tissue for treatment of congestive heart failure, the method comprising:
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positioning a distal end of an elongate shaft adjacent an external wall of a patient'"'"'s heart while a proximal end of the elongate shaft is positioned outside of the patient'"'"'s body; advancing a needle distally of a distal end of the elongate shaft and through the external wall, the needle being disposed centrally within a lumen of a sleeve; advancing the sleeve distally of the distal end of the elongate shaft and over the needle through the external wall so that the needle is retracted and fully disposed within the lumen of the sleeve, the sleeve being initially disposed within a lumen of the elongate shaft and coaxially aligned with the needle prior to advancement of the sleeve through the external wall; advancing the sleeve distally of the external wall to position the sleeve and needle adjacent a septal wall of the patient'"'"'s heart, wherein the sleeve is advanced adjacent the septal wall with the needle fully disposed within the lumen of the sleeve, and wherein the sleeve comprises a flexible shape-memory material having a preconfigured bend or curve such that the sleeve curves away from an axis of the elongate shaft'"'"'s lumen as the sleeve is advanced distally of the distal end of the elongate shaft and distally of the external wall; and advancing the needle distally of a distal tip of the sleeve and through the septal wall of the patient'"'"'s heart; wherein when the needle is advanced distally of the distal tip of the sleeve, a distal end of the needle is coaxially aligned with the distal tip of the sleeve; and wherein when the sleeve is fully advanced distally of the distal end of the elongate shaft, the sleeve has a straight section that extends from the elongate shaft'"'"'s distal end and that is axially aligned with the elongate shaft'"'"'s lumen and a curved section that extends between the straight section and the distal tip of the sleeve. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification