Tympanostomy tube delivery device with replaceable shaft portion
First Claim
1. An apparatus, comprising:
- a shaft assembly including a plurality of shafts and a plurality of cam followers, each shaft from the plurality of shafts coupled to a different cam follower from the plurality of cam followers;
a handpiece including a housing defining an interior space and a fixed opening extending from an exterior of the handpiece to the interior space, the fixed opening having a dimension greater than a lateral dimension of the shaft assembly such that a portion of each cam follower from the plurality of cam followers can be inserted through the fixed opening into the interior space; and
a drive assembly disposed in the interior space and configured to drive the plurality of shafts in a predetermined sequence to deploy a tympanostomy tube in a tympanic membrane.
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Accused Products
Abstract
A tympanostomy tube delivery device comprises a shaft assembly and a handpiece. All or a portion of the shaft assembly is selectively coupleable and removable from the handpiece. The handpiece includes a housing defining an opening that can receive a portion of the shaft assembly. The shaft assembly comprises a cannula, a piercer/dilator tube, a shield tube, and a pusher tube operable to translate relative to the cannula. The pressure equalization tube is positioned within the shield tube of the shaft assembly. The piercer/dilator tube and the shield tube are operable to pierce the tympanic membrane and dilate an opening formed therein. The pusher tube is operable to drive the pressure equalization tube out of the shield tube of the shaft assembly and into the opening formed in the tympanic membrane. Upon completion of the procedure, all or a portion of the shaft assembly may then be removed and replaced.
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Citations
18 Claims
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1. An apparatus, comprising:
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a shaft assembly including a plurality of shafts and a plurality of cam followers, each shaft from the plurality of shafts coupled to a different cam follower from the plurality of cam followers; a handpiece including a housing defining an interior space and a fixed opening extending from an exterior of the handpiece to the interior space, the fixed opening having a dimension greater than a lateral dimension of the shaft assembly such that a portion of each cam follower from the plurality of cam followers can be inserted through the fixed opening into the interior space; and a drive assembly disposed in the interior space and configured to drive the plurality of shafts in a predetermined sequence to deploy a tympanostomy tube in a tympanic membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a shaft assembly including a plurality of shafts and a plurality of cam followers, each shaft from the plurality of shafts coupled to a different cam follower from the plurality of cam followers; a handpiece including a housing defining an interior space and an opening extending from an exterior of the handpiece to the interior space, the opening configured to receive the plurality of cam followers; and a drive assembly disposed in the interior space and configured to drive the plurality of shafts in a predetermined sequence to deploy a tympanostomy tube in a tympanic membrane, the drive assembly including a cam configured to engage the plurality of cam followers after the plurality of cam followers are received in the opening. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification