Delivery System for Implanting Nasal Ventilation Tube
First Claim
1. A delivery system comprising:
- an introducer having a first proximal end and a first distal end;
a cannula slidably disposed over the introducer, the cannula having a second proximal end, a second distal end, and an outside diameter, the cannula moveable along the introducer between a first position and a second position;
a ventilation tube releasably disposed on the first distal end of the introducer, the ventilation tube having a third proximal end, a third distal end, and a ventilation tube wall defining a channel extending between the third proximal end and the third distal end, the channel having a resting diameter and a loaded diameter;
wherein the outside diameter of the cannula is greater than the loaded diameter of the channel; and
wherein movement of the cannula from the first position to the second position advances the ventilation tube distally along the introducer to release the ventilation tube from the introducer.
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0 Petitions
Accused Products
Abstract
Delivery systems and methods of creating an accessory maxillary ostium and implanting a ventilation tube for purposes of ventilation, irrigation, infusion or procedural work are described. The delivery systems include an introducer and an associated ventilation tube. An irrigation and/or infusion catheter may be advanced through the ventilation tube in order to irrigate or express the contents of the sinus cavities. A secondary irrigation and/or infusion catheter or a balloon catheter may be advanced through an outer irrigation and/or infusion catheter, deeply into the sinus cavity, in order to irrigate or express the contents of the sinus cavities. Moreover, the balloon catheter may alternatively or additionally be employed to for dilation of the natural ostium. Still further, a device for delivering drugs, fluids or the like, may be coupled to the ventilation tube for delivery of same.
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Citations
20 Claims
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1. A delivery system comprising:
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an introducer having a first proximal end and a first distal end; a cannula slidably disposed over the introducer, the cannula having a second proximal end, a second distal end, and an outside diameter, the cannula moveable along the introducer between a first position and a second position; a ventilation tube releasably disposed on the first distal end of the introducer, the ventilation tube having a third proximal end, a third distal end, and a ventilation tube wall defining a channel extending between the third proximal end and the third distal end, the channel having a resting diameter and a loaded diameter; wherein the outside diameter of the cannula is greater than the loaded diameter of the channel; and wherein movement of the cannula from the first position to the second position advances the ventilation tube distally along the introducer to release the ventilation tube from the introducer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A delivery system comprising:
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an introducer having a first proximal end and a first distal end; a cannula slidably disposed over the introducer, the cannula having a second proximal end, a second distal end, and an outside diameter, the cannula moveable along the introducer between a first position and a second position; a ventilation tube releasably disposed on the first distal end of the introducer, the ventilation tube having a third proximal end, a third distal end, a proximal flange, a distal flange, and a ventilation tube wall defining a channel extending between the third proximal end and the third distal end, the channel having a first resting diameter and a loaded diameter; wherein the distal flange of the ventilation tube is frusto-conical; wherein the outside diameter of the cannula is greater than the loaded diameter of the channel; and wherein movement of the cannula from the first position to the second position advances the ventilation tube distally along the introducer to release the ventilation tube from the introducer. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A delivery system comprising:
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an introducer having a first proximal end and a first distal end; a handle disposed on the first proximal end of the introducer and comprising a head member, a housing, and a finger retraction handle; the head member disposed over the introducer and having a second proximal end, a second distal end, and a wall defining a lumen extending between the second proximal end and the second distal end; the housing disposed over the introducer and having a third proximal end, a third distal end, and a wall defining an aperture and a cavity, the third distal end adapted to be attached to the second proximal end of the head member; the aperture extending through the wall of the housing and providing access to the cavity, the aperture having a first opening and an opposably positioned second opening, the aperture containing a rocker arm; the rocker arm pivotally attached within the aperture and having a first portion and an opposably positioned second portion; the cavity in communication with the lumen of the head member and having a fourth proximal end and a fourth distal end, the cavity containing a drum and a spring; the drum slidably disposed over the introducer and having a fifth proximal end and a fifth distal end; the spring disposed between the fourth distal end of the cavity and the fifth distal end of the drum; the finger retraction handle slidably disposed over the housing and having a sixth proximal end and a sixth distal end; a cannula slidably disposed over the introducer and having a seventh proximal end, a seventh distal end, and an outside diameter, the seventh proximal end attached to the fifth distal end of the drum, the cannula moveable along the introducer between a first position and a second position; a ventilation tube releasably disposed on the first distal end of the introducer, the ventilation tube having an eighth proximal end, an eighth distal end, and a wall defining a channel extending between the eighth proximal end and the eighth distal, the channel having a resting diameter and a loaded diameter; wherein the outside diameter of the cannula is greater than the loaded diameter of the channel; and wherein the first portion of the rocker arm extends through the first opening of the aperture and is disposed proximal to the sixth proximal end of the finger retraction handle, and the second portion of the rocker arm extends through the second opening of the aperture and is disposed proximal to the fifth proximal end of the drum. - View Dependent Claims (19, 20)
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Specification