Trans-luminal surgical device
First Claim
1. A trans-luminal, guidewire-advanced, rapid-exchange surgical delivery device having a proximal end, a primary shaft and a distal zone to be advanced over a guidewire along a bodily lumen to a site of surgery, the device comprising:
- i. a guidewire tube defining a guidewire lumen, said guidewire tube lying within the distal zone with the guidewire lumen to one side of the primary shaft, the guidewire lumen having a length that longitudinally overlaps a length of the primary shaft and having a proximal end opening which lies to one side of the primary shaft; and
ii. a sleeve comprising a unitary outer wall extending over an entire length of the sleeve, the sleeve defining only a single lumen, the sleeve lumen configured to receive a surgical element distal of the guidewire tube, a proximal end of the sleeve including a radially inwardly tapering portion over a proximal end opening of the guidewire tube, said inwardly tapering portion defining a proximal guidewire lumen exit port, and a tubular constant diameter nose portion surrounding the primary shaft proximal of the radially inwardly tapering portion, the nose portion defining a proximal-most end of the sleeve.
1 Assignment
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Accused Products
Abstract
A device for trans-luminal delivery of a self-expanding stent or other surgical device and which is designed for rapid exchange over a guidewire has a guidewire lumen that adjacent its proximal exit port lies side -by-side with the line of the shaft of the device. A sleeve which surrounds and confines the stent has a proximal end that is shaped around the guidewire exit port to show in profile a shape reminiscent of the nose of a dolphin. In preferred embodiments, the sleeve also has a tapered distal tip that is withdrawn proximally over the length of the stent to release it, progressively, from its distal end. The configuration delivers simplicity of design, enhanced performance and reliability in use.
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Citations
37 Claims
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1. A trans-luminal, guidewire-advanced, rapid-exchange surgical delivery device having a proximal end, a primary shaft and a distal zone to be advanced over a guidewire along a bodily lumen to a site of surgery, the device comprising:
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i. a guidewire tube defining a guidewire lumen, said guidewire tube lying within the distal zone with the guidewire lumen to one side of the primary shaft, the guidewire lumen having a length that longitudinally overlaps a length of the primary shaft and having a proximal end opening which lies to one side of the primary shaft; and ii. a sleeve comprising a unitary outer wall extending over an entire length of the sleeve, the sleeve defining only a single lumen, the sleeve lumen configured to receive a surgical element distal of the guidewire tube, a proximal end of the sleeve including a radially inwardly tapering portion over a proximal end opening of the guidewire tube, said inwardly tapering portion defining a proximal guidewire lumen exit port, and a tubular constant diameter nose portion surrounding the primary shaft proximal of the radially inwardly tapering portion, the nose portion defining a proximal-most end of the sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A rapid-exchange delivery system, comprising:
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a primary shaft having a proximal end and a distal end; a guidewire tube attached to the primary shaft such that a length of the guidewire tube longitudinally overlaps a length of the primary shaft; and a sleeve having a unitary outer wall extending over an entire length of the sleeve defining one and only one lumen, the sleeve including a distal section surrounding a self-expanding stent and a proximal section surrounding the guidewire tube, the proximal section including; an annulus distal of the primary shaft distal end and adjacent thereto, the annulus having a diameter less than a diameter of the sleeve immediately proximal and distal of the annulus; and a tapering portion adjacent a proximal end opening of the guidewire tube and including a guidewire exit port aligned therewith, the tapering portion and annulus together preventing premature sliding of the sleeve with respect to the primary shaft and guidewire tube. - View Dependent Claims (34, 35, 36, 37)
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Specification