Apparatus for percutaneous surgery
First Claim
1. An apparatus for use in percutaneous surgery, comprising:
- an elongated cannula sized for percutaneous introduction into a patient, said cannula defining a working channel and having a longitudinal axis extending between a distal working end and an opposite proximal end, said cannula further defining a length between said distal end and said proximal end and an outer surface thereabout;
a clamp assembly engageable to said outer surface of said cannula, said cannula assembly including a viewing element receiving portion formed with said clamp assembly at various positions along said length of said cannula; and
a viewing element releasably engaged to said clamp assembly.
2 Assignments
0 Petitions
Accused Products
Abstract
Devices and methods for performing percutaneous surgery under direct visualization through a single cannula are shown. A device includes an elongated cannula sized for percutaneous introduction that defines a working channel between its ends. The working channel is sized to receive one or more surgical tools therethrough. A clamp assembly is engaged to the outer surface of the cannula. The clamp assembly includes a viewing element receiving portion and a viewing element includes a clamp assembly engaging portion for removably engaging the viewing element to the clamp assembly. In one embodiment, the receiving portion defines a receptacle for receiving a dovetail included on the engaging portion of the viewing element. The receiving portion may also include a pivotable clip for removably engaging a protuberance of the engaging portion. The clamp includes a mechanism that allows translation, rotation, and removal of the clamp assembly and the viewing element with respect to the cannula. The cannula may also be engaged to a flexible arm that is securely mounted in order to stabilize the position of the cannula at the surgical site.
605 Citations
68 Claims
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1. An apparatus for use in percutaneous surgery, comprising:
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an elongated cannula sized for percutaneous introduction into a patient, said cannula defining a working channel and having a longitudinal axis extending between a distal working end and an opposite proximal end, said cannula further defining a length between said distal end and said proximal end and an outer surface thereabout; a clamp assembly engageable to said outer surface of said cannula, said cannula assembly including a viewing element receiving portion formed with said clamp assembly at various positions along said length of said cannula; and a viewing element releasably engaged to said clamp assembly. - 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)
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26. A cannula assembly for supporting a viewing elements comprising:
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a cannula having a length extending between a proximal end and a distal end; a clamp assembly, said clamp assembly including; a ring sized to substantially encircle said cannula, said ring including a pair of adjacent free ends; a mechanism engaged to said ring operable to bias said free ends towards one another to engage said ring to an outer surface of said cannula; and a viewing element receiving portion formed with and extending proximally from said ring. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. An apparatus for performing percutaneous surgery, comprising:
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a cannula having a distal working end and a proximal end and defining a working channel therethrough, said cannula having a length between said proximal end and said distal end and an outer surface thereabout; a clamp assembly engageable to said outer surface of said cannula at various positions along said length, said cannula assembly including a viewing element receiving portion formed with said clamp assembly; a bracket having a first end and an opposite second end, said first end engaged to said outer surface of said cannula; and a flexible arm having a first end and an opposite second end, said first end of said flexible arm engaged to said second end of said bracket. - View Dependent Claims (41, 42, 43)
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44. An apparatus for use in percutaneous surgery, comprising:
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an elongated cannula sized for percutaneous introduction into a patient, said cannula defining a working channel and having a longitudinal axis extending between a distal working end and an opposite proximal end, said cannula further defining an outer surface thereabout; a clamp assembly movably engaged to said cannula, said clamp assembly including a viewing element receptacle; and a viewing element including a dovetail, said dovetail slidingly received in said viewing element receptacle. - View Dependent Claims (45, 46, 47, 48, 49, 50)
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51. An apparatus for use in percutaneous surgery, comprising:
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an elongated cannula sized for percutaneous introduction into a patient, said cannula defining a working channel and having a longitudinal axis extending between a distal working end and an opposite proximal end, said cannula further defining an outer surface thereabout; a clamp assembly engaged at a first location to said outer surface of said cannula, said clamp assembly movable along said outer surface for engagement at a second location on said outer surface, said clamp assembly including a viewing element receiving portion extending proximally from said clamp assembly; and a viewing element releasably engaged to said clamp assembly. - View Dependent Claims (52, 53, 54)
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55. A cannula assembly for supporting a viewing element, comprising:
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a cannula; a ring sized to substantially encircle said cannula, said ring including a first arm pivotably coupled to a second arm, each of said arms including a free end, said free ends positioned adjacent one another; a mechanism connected with said ring, said mechanism including a lever arm extending from each of said first and second arms and a hinge pivotably coupling said first and second arms, said hinge biasing said arms against the outer surface of the cannula; and a viewing element receiving portion extending from said ring.
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56. A cannula assembly for supporting a viewing element, comprising:
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a cannula; a ring sized to substantially encircle said cannula, said ring including a pair of opposing arms, each arm extending from a free end of said ring and defining a slot extending therebetween, at least one of said arms including a projection extending therefrom; a mechanism engaged to said ring operable to bias said free ends towards one another to so that said ring engages an outer surface of said cannula, said mechanism including; a lever arm having an inside face facing said at least one projection, said inside face including a cam surface with at least one inclined ramp; and a fastener rotatably engaging said lever arm to said pair of arms with said cam surface disposed for contact with said at least one projection, whereby rotation of said lever arm relative to said pair of arms causes said at least one projection to slide along said ramp to push said pair of arms toward each other to narrow the slot; and
a viewing element receiving portion extending from said ring. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. An apparatus for use in percutaneous surgery, comprising:
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an elongated cannula sized for percutaneous introduction into a patient, said cannula defining a working channel and having a longitudinal axis extending between a distal working end and an opposite proximal end, said cannula further defining a length between said distal end and said proximal end and an outer surface thereabout; a clamp assembly engaged to said cannula, said clamp assembly including a viewing element receiving portion extending proximally from said clamp assembly; and a viewing element releasably engaged by said clamp assembly, wherein proximal and distal movement of said viewing element with respect to said clamp assembly is prevented by the engagement between said clamp assembly and said viewing element. - View Dependent Claims (67, 68)
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Specification