Modified needle catheter for directional orientation delivery
First Claim
1. An apparatus comprising:
- an expandable body having dimensions suitable for percutaneous delivery;
at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body;
a needle disposed in the lumen of the at least one delivery cannula, the needle comprising a body portion having a protuberance thereon and a delivery end distal to the protuberance;
a first stop disposed in the lumen of the at least one delivery cannula at a position distal to the protuberance on the needle, the stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; and
a second stop disposed in the lumen of the at least one delivery cannula at a position proximal to the protuberance on the needle, the second stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance,wherein the first stop comprises a sleeve having an outer dimension less than a dimension of the lumen of the at least one delivery cannula and a lumen therethrough having an inner dimension greater than an outer dimension of the needle at a point other than a point of the protrusion, andwherein the sleeve comprises a first sleeve and the protuberance comprises a second sleeve coupled to the needle, the second sleeve having an outer dimension comprising a first cross-sectional shape of the at least one delivery cannula at a portion distal to the second stop that is different from a shape of the delivery cannula proximal to the second stop.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatus for delivering a treatment agent through a percutaneous delivery apparatus are herein disclosed. In some embodiments, an apparatus can include an expandable body with at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body. The expandable body can be coupled to a delivery assembly with a hub. The delivery cannula can house at least one needle with a protuberance on a distal end. A portion of the hub can house at least one needle with a protuberance on a proximal end. In some embodiments, the protuberance (proximal or distal) can direct the orientation of the needle during an application of treatment agent. In some embodiments, the delivery cannula can include at least one stop for controlling the movement of the needle during an application of treatment agent. In some embodiments, a sheath can be disposed around the delivery cannula.
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Citations
27 Claims
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1. An apparatus comprising:
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an expandable body having dimensions suitable for percutaneous delivery; at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body; a needle disposed in the lumen of the at least one delivery cannula, the needle comprising a body portion having a protuberance thereon and a delivery end distal to the protuberance; a first stop disposed in the lumen of the at least one delivery cannula at a position distal to the protuberance on the needle, the stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; and a second stop disposed in the lumen of the at least one delivery cannula at a position proximal to the protuberance on the needle, the second stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance, wherein the first stop comprises a sleeve having an outer dimension less than a dimension of the lumen of the at least one delivery cannula and a lumen therethrough having an inner dimension greater than an outer dimension of the needle at a point other than a point of the protrusion, and wherein the sleeve comprises a first sleeve and the protuberance comprises a second sleeve coupled to the needle, the second sleeve having an outer dimension comprising a first cross-sectional shape of the at least one delivery cannula at a portion distal to the second stop that is different from a shape of the delivery cannula proximal to the second stop. - View Dependent Claims (2, 3)
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4. An apparatus comprising:
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an expandable body having dimensions suitable for percutaneous delivery; at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body; a needle disposed in the lumen of the at least one delivery cannula, the needle comprising a body portion having a protuberance thereon and a delivery end distal to the protuberance; a first stop disposed in the lumen of the at least one delivery cannula at a position distal to the protuberance on the needle, the stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; a second stop disposed in the lumen of the at least one delivery cannula at a position proximal to the protuberance on the needle, the second stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; a catheter body having a lumen therethrough, the lumen comprising a dimension at a distal end to contain the at least one delivery cannula and a dimension at a proximal end to contain the needle; and a hub coupled to a proximal end of the catheter body, wherein the needle extends through the hub and is maintained in a prescribed radial orientation. - View Dependent Claims (5, 6, 7, 8, 9)
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10. An apparatus comprising:
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an expandable body having dimensions suitable for percutaneous delivery; at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body; a needle disposed in the lumen of the at least one delivery cannula, the needle comprising a body portion having a protuberance thereon and a delivery end distal to the protuberance; a first stop disposed in the lumen of the at least one delivery cannula at a position distal to the protuberance on the needle, the stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; a second stop disposed in the lumen of the at least one delivery cannula at a position proximal to the protuberance on the needle, the second stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance, wherein the first stop comprises a sleeve having an outer dimension less than a dimension of the lumen of the at least one delivery cannula and a lumen therethrough having an inner dimension greater than an outer dimension of the needle at a point other than a point of the protrusion, and wherein the sleeve comprises a first sleeve and the protuberance comprises a second sleeve coupled to the needle, the second sleeve having an outer dimension comprising a first cross-sectional shape of the at least one delivery cannula at a portion proximal to the second stop that is different from a second cross-sectional shape distal to the second stop. - View Dependent Claims (11, 12, 13)
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14. An apparatus comprising:
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an expandable body having dimensions suitable for percutaneous delivery; at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body; a needle disposed in the lumen of the at least one delivery cannula, the needle comprising a body portion having a protuberance thereon; a first stop disposed in the lumen of the at least one delivery cannula at a position proximal to the protuberance on the needle, the stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; a second stop disposed in the lumen of the delivery cannula at a position distal to the protuberance on the needle, the second stop defining a diameter of the lumen less than an outer diameter of the needle at the protuberance; a catheter body having a lumen therethrough, the lumen comprising a dimension at a distal end to contain the at least one delivery cannula and a dimension at a proximal end to contain the needle; and a hub coupled to a proximal end of the catheter body, wherein the stop comprises a sleeve having an outer dimension less than a dimension of the lumen of the at least one delivery cannula and a lumen therethrough having an inner dimension greater than an outer dimension of the needle at a point other than a point of the protrusion, wherein the needle extends through the hub and is maintained in a prescribed radial orientation. - View Dependent Claims (15, 16, 17, 18)
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19. An apparatus comprising:
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a catheter cannula having a length suitable for tracking through a portion of a vasculature and a dimension suitable for percutaneous delivery; a first needle and a second needle extending through a portion of the catheter cannula and having a distal end; and a hub coupled to a proximal portion of the catheter cannula; and a first protuberance coupled to the first needle and a second protuberance coupled to the second needle, wherein the first needle and the second needle are associated with the hub such that a proximal or a distal movement of either needle within the hub is limited by contact between the protuberance and the hub, wherein the hub comprises a first track and a second track, the first track having dimensions suitable to accommodate the first needle therein and the second track having dimensions suitable to accommodate the second needle therein, and wherein a proximal portion of each of the first needle and the second needle is associated with the hub according to a prescribed radial orientation. - View Dependent Claims (20, 21)
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22. An apparatus comprising:
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a balloon catheter comprising a cannula having a length suitable for tracking through a portion of a vasculature and an inflatable balloon coupled to the distal end of the catheter; at least one needle having a length suitable for delivering a distal end to the balloon with a proximal end outside the vasculature, the needle comprising a first protuberance on a distal portion that increases an outer diameter of the at least one needle at a point of the first protuberance; a hub coupled to a proximal portion of the cannula and retaining the at least one needle according to a prescribed radial orientation by a second protuberance on a proximal portion of the needle; at least one needle cannula comprising a proximal portion and a distal portion, the needle cannula having a lumen suitable for containing the at least one needle, wherein a distal point of the lumen of the at least one catheter cannula comprises a diameter less than an exterior diameter of the at least one needle at the point of the first protuberance; and at least one delivery cannula different from the at least one needle cannula and coupled to a proximal portion of the balloon, and having a length dimension suitable for containing at least a portion of the length of the at least one needle, wherein proximally to distally, the at least one needle is disposed through the at least one needle cannula and the at least one delivery cannula. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification