TISSUE ACCESS DEVICE WITH ALIGNMENT GUIDE AND METHODS OF USE
First Claim
Patent Images
1. An access assembly comprising:
- a cannula adapted for percutaneously accessing a target tissue within a patient, the cannula having a tubular elongate body and a handle;
the tubular elongate body having a distal end, a proximal end, an outer surface and an inner luminal surface; and
an alignment guide having an attachment portion and at least one radiopaque alignment indicator, the attachment portion adapted to removably attach to a portion of the outer surface of the tubular elongate body.
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Accused Products
Abstract
An access assembly for use during a medical procedure including accessing a selected bone structure or target tissue, includes a cannula and stylet with an alignment guide removably attached to the cannula. The alignment guide shows the relative alignment between the access assembly and the viewing axis of an imaging system, thereby making placement of the access assembly more accurate. Once a desired alignment is achieved, the access assembly may then be advanced further towards the target tissue until a desired placement is achieved.
102 Citations
38 Claims
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1. An access assembly comprising:
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a cannula adapted for percutaneously accessing a target tissue within a patient, the cannula having a tubular elongate body and a handle; the tubular elongate body having a distal end, a proximal end, an outer surface and an inner luminal surface; and an alignment guide having an attachment portion and at least one radiopaque alignment indicator, the attachment portion adapted to removably attach to a portion of the outer surface of the tubular elongate body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An access assembly comprising:
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a cannula adapted for percutaneously accessing a target tissue within a patient, the cannula having a tubular elongate body and a handle; the tubular elongate body having a distal end, a proximal end, an outer surface and an inner luminal surface; and an alignment guide having an attachment portion and a radiopaque body, the attachment portion adapted to removably attach to a portion of the outer surface of the tubular elongate body, the radiopaque body adapted to provide a visual reference of the alignment of the elongate body in relation to an axis of viewing of a radiographic device when viewed radiographically.
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19. A cannula for percutaneously accessing a target tissue within a patient comprising:
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a tubular elongate body having a distal end, a proximal end, an outer surface and an inner luminal surface; and the handle comprising a first surface and a second surface separated by a thickness, the first surface defining a first plane and the second surface defining a second plane, the first plane substantially parallel to the second plane, a first radiopaque landmark disposed on the first surface and a second radiopaque landmark disposed on the second surface. - View Dependent Claims (20, 21, 22)
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23. A forceps assembly adapted for grasping a tubular elongate body of a cannula comprising:
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a first member in pivotable connection with a second member, each member having a proximal handle end and a distal grasping end; the distal grasping end of the first member and second member pivotable between an open position and a closed position; the first member distal end having a first grasping surface and the second member distal end having a second grasping surface, the first grasping surface and the second grasping surface adapted to grasp a portion of the tubular elongate body of the cannula in the closed position; a first radiopaque alignment indicator extending from a portion of the distal end of the first member and a second radiopaque alignment indicator extending from a portion on the distal end of the second member, the first radiopaque alignment indicator and the second radiopaque alignment indicator adapted to provide a visual reference of the alignment of the elongate body in relation to a target tissue when held therebetween in the closed position and viewed fluoroscopically.
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24. An alignment guide for removably attaching to an elongate body comprising:
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an attachment portion adapted to removably attach to a portion of the outer surface of the elongate body; and at least one radiopaque alignment indicator adapted to provide a visual indication of the alignment of the cannula when viewed radiographically. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A medical procedure to be performed on a body comprising:
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providing a cannula assembly comprising; a cannula adapted for percutaneously accessing a target tissue within a patient, the cannula having a tubular elongate body and a handle, the tubular elongate body having a distal end, a proximal end, an outer surface and an inner luminal surface; and an alignment guide having an attachment portion and at least one radiopaque alignment indicator, the attachment portion adapted to removably attach to a portion of the outer surface of the tubular elongate body; attaching the alignment guide to a portion of the outer surface of the tubular elongate body; partially penetrating the body with the cannula; aligning the cannula assembly with respect to a target tissue by viewing the cannula under fluoroscopy; advancing the assembled cannula system to access the target tissue; and treating the target tissue. - View Dependent Claims (32, 33, 34)
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35. A kit for treating a vertebral body comprising:
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a cannula; a stylet adapted to fit within and be removed from said cannula; an alignment guide having an attachment portion and at least one radiopaque alignment indicator, the attachment portion adapted to removably attach to a portion of the outer surface of the cannula, the radiopaque alignment indicator adapted to provide a visual indication of the alignment of the cannula when viewed flouroscopically; and a settable implant injection delivery system having a connector adapted to fluidly connect said delivery system to said cannula to deliver a settable implant material to a target site - View Dependent Claims (36, 37)
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38. An access assembly comprising:
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a cannula adapted for percutaneously accessing a target tissue within a patient, the cannula having a tubular elongate body and a handle; the tubular elongate body having a distal end, a proximal end, an outer surface and an inner luminal surface; and an alignment means having an attachment means for removably attaching to a portion of the outer surface of the tubular elongate body and at least one radiopaque alignment means for indicating the alignment of the cannula with an axis of viewing of a fluoroscopic viewing device when viewed fluoroscopically.
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Specification