Low cost low profile inflatable bone tamp
First Claim
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1. A surgical device comprising:
- a shaft comprising an inner surface defining a lumen, the shaft extending along a longitudinal axis between a proximal end and a distal end comprising a primary region having a first diameter, a secondary region having a reduced second diameter and a transition region that is tapered continuously from the primary region to the secondary region;
a balloon comprising a proximal end that is coupled to the primary region and a distal end that is coupled to the secondary region; and
a stylet comprising a rod that is movably positioned within the lumen, the rod having a maximum outer diameter that is equal to or greater than a maximum inner diameter of the secondary region, the stylet being movable between a first configuration in which the rod is spaced apart from the inner surface and a second configuration in which rod engages the inner surface to seal the secondary region,wherein the secondary region comprises a port that is in communication with the lumen and a chamber of the balloon such that an inflation material may be moved through the lumen and into the chamber through the port when the stylet is in the first configuration to increase a volume of the chamber.
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Abstract
An inflatable bone tamp for performing a minimally invasive surgical procedure includes a shaft having a primary region and a reduced diameter region, and an inflatable structure surrounding at least a portion of the reduced diameter region. The reduced diameter region of the shaft allows the deflated size of the inflatable structure to be minimized, while at the same time eliminating the need for the conventional dual lumen balloon catheter construction.
32 Citations
20 Claims
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1. A surgical device comprising:
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a shaft comprising an inner surface defining a lumen, the shaft extending along a longitudinal axis between a proximal end and a distal end comprising a primary region having a first diameter, a secondary region having a reduced second diameter and a transition region that is tapered continuously from the primary region to the secondary region; a balloon comprising a proximal end that is coupled to the primary region and a distal end that is coupled to the secondary region; and a stylet comprising a rod that is movably positioned within the lumen, the rod having a maximum outer diameter that is equal to or greater than a maximum inner diameter of the secondary region, the stylet being movable between a first configuration in which the rod is spaced apart from the inner surface and a second configuration in which rod engages the inner surface to seal the secondary region, wherein the secondary region comprises a port that is in communication with the lumen and a chamber of the balloon such that an inflation material may be moved through the lumen and into the chamber through the port when the stylet is in the first configuration to increase a volume of the chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A surgical device comprising:
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a shaft comprising an inner surface defining a lumen, the shaft extending along a longitudinal axis between a proximal end and a distal end comprising a primary region having a first diameter and a secondary region having a reduced second diameter; a connector coupled to the primary region; a balloon comprising a proximal end that is coupled to the primary region and a distal end that is coupled to the secondary region; and a stylet comprising a cap and a rod that extends from the cap, the cap having threads that engage threads on the connector to secure the stylet to the connector, the rod being movably positioned within the lumen, the rod having a maximum outer diameter that is equal to or greater than a maximum inner diameter of the secondary region, the stylet being movable between a first configuration in which the rod is spaced apart from the inner surface and a second configuration in which the rod engages the inner surface to seal a distal end of the secondary region, wherein the surgical device is configured to allow material in the lumen to move into a chamber of the balloon when the stylet is in the first configuration, and wherein the stylet is configured to prevent material in the lumen from moving into the chamber when the stylet is in the second configuration.
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20. A surgical device comprising:
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a shaft comprising an inner surface defining a lumen, the shaft extending along a longitudinal axis between a proximal end and a distal end comprising a primary region having a uniform first diameter, a secondary region having a reduced uniform second diameter and a transition region that is tapered continuously from the primary region to the secondary region; a connector coupled to the primary region; a balloon comprising a proximal end that is coupled to the primary region and a distal end that is coupled to the secondary region; and a stylet comprising a cap and a rod that extends from the cap, the cap having threads that engage threads on the connector to secure the stylet to the connector, the rod being movably positioned within the lumen, the rod having a maximum outer diameter that is equal to or greater than a maximum inner diameter of the secondary region, the stylet being movable between a first configuration in which the rod is spaced apart from the inner surface and a second configuration in which the rod engages the inner surface to seal a distal end of the secondary region, wherein when the stylet is in the first configuration, the lumen is in communication with a chamber of the balloon, and wherein when the stylet is in the second configuration, the lumen is not in communication with the chamber.
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Specification