Method and inflatable chamber apparatus for separating layers of tissue
First Claim
1. A device for dissection of tissue layers, including:
- a trocar having a distal end; and
a dissection balloon assembly attached to the distal end of the trocar, the dissection balloon including a distal end and a viewing window provided at the distal end, wherein the distal end of the dissection balloon defines an opening, the viewing window has a grooved side wall, and the grooved side wall is glued to the dissection balloon so that the viewing window is attached to the dissection balloon over the opening.
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0 Petitions
Accused Products
Abstract
An apparatus for tissue dissection and instrument anchoring, including a dissection balloon having a viewing window (preferably a rigid, transparent window) at its distal end, or including an anchoring or dissection balloon having nonuniform elasticity selected to achieve desired inflated shape and pressure characteristics, and methods for using such apparatus. The window, which can be a lens (such as a wide angle lens), is transparent and either rigid or non-rigid but sufficiently strong to retain a desired optical shape while (and after) being pushed against tissue layers by a rigid instrument deployed within the balloon. In preferred embodiments, the balloon is a long-necked dissection balloon deployed through a cannula. In other embodiments, the invention is a dissection balloon having a viewing window at its distal end, or an anchoring or dissection balloon having nonuniform elasticity selected to achieve desired inflated shape and pressure characteristics, for use in an apparatus for tissue dissection, tissue retraction, and instrument anchoring. In other embodiments, the invention is a dissection balloon assembly including a long-necked dissection balloon having a viewing window at its distal end, and a housing to which the dissection balloon'"'"'s mouth is attached.
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Citations
14 Claims
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1. A device for dissection of tissue layers, including:
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a trocar having a distal end; and a dissection balloon assembly attached to the distal end of the trocar, the dissection balloon including a distal end and a viewing window provided at the distal end, wherein the distal end of the dissection balloon defines an opening, the viewing window has a grooved side wall, and the grooved side wall is glued to the dissection balloon so that the viewing window is attached to the dissection balloon over the opening. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for dissection of tissue layers, including:
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a trocar having a distal end; and a dissection balloon attached to the distal end of the trocar, the dissection balloon having nonuniform elasticity selected to achieve desired inflated shape and pressure characteristics, wherein the dissection balloon has a distal end, a viewing window is provided at the distal end of the dissection balloon, the distal end of the dissection balloon defines an opening, the viewing window has a grooved side wall, and the grooved side wall is glued to the dissection balloon so that the viewing window is attached to the dissection balloon over the opening.
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8. A device for dissection of tissue layers, including:
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a trocar having a distal end; and a dissection balloon attached to the distal end of the trocar, the dissection balloon having nonuniform elasticity selected to achieve desired inflated shape and pressure characteristics, wherein the dissection balloon comprises a first sheet having a first elasticity, and a second sheet having a second elasticity bonded to the first sheet, wherein the second elasticity is substantially less than the first elasticity. - View Dependent Claims (9, 10, 11)
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12. A device for dissection of tissue layers, including:
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a trocar having a distal end; and a dissection balloon attached to the distal end of the trocar, the dissection balloon having nonuniform elasticity selected to achieve desired inflated shape and pressure characteristics, wherein the dissection balloon comprises; a first sheet; a second sheet bonded to the first sheet; and a third sheet bonded to a central portion of the second sheet, wherein the first sheet and the second sheet have substantially identical size, shape, and elasticity, and the third sheet has an elasticity substantially less than the elasticity of the second sheet.
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13. A device for dissection of tissue layers, including:
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a trocar having a distal end; and a dissection balloon attached to the distal end of the trocar, the dissection balloon having nonuniform elasticity selected to achieve desired inflated shape and pressure characteristics, wherein the dissection balloon comprises; a first sheet; and a second sheet bonded to the first sheet, wherein the first sheet and the second sheet have substantially identical size and shape, the second sheet has lateral end portions and a central portion between the lateral end portions, the first sheet and the lateral end portions of the second sheet have substantially identical elasticity, and the central portion of the second sheet has an elasticity substantially less than the elasticity of the first sheet. - View Dependent Claims (14)
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Specification