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US5871493A Expired / Lapsed US ⏱️ 0.0 years remaining

Surgical instrument handpiece and system

Assignee: Smith and Nephew Inc
•
Filing: 1996-04-10
•
Granted: 1999-02-16
•
Expires: 2016-04-10
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Abstract

Abstract A surgical apparatus includes a body configured for insertion into a bore of a surgical handpiece and a latch that includes a resilient member connected to the body. The resilient member has a latching structure configured to latchingly engage a surface of the surgical handpiece within the bore.

Inventors

  • 👤 Douglas D. Sjostrom
  • 👤 Peter M. Cesarini
  • 👤 Paul A. Torrie
  • 👤 Graham Smith
  • 👤 Steven Ek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 22:02
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320016; A61B17/32002; A61B17/16; A61B17/1613; A61B17/162; B; B25; B25F; B25F3/00; H; H01; H01H; H01H36/00; A61B2017/00367; A61B2017/0046; A61B2017/00477; A61B90/00; A61B90/08; A61B2090/0813; H01H2300/00; H01H2300/014; H01H9/00; H01H9/02; H01H9/06

Claims Analysis

Total Claims: 90
Claim 1
Independent Claim 55 words
Apparatus for insertion into a bore of a surgical handpiece, the apparatus comprising: a body, and a latch comprising a movable member connected to said body and having a latching structure configured to latchingly engage a surface of the surgical handpiece within the bore and a user-manipulable release portion fixedly mounted on the movable member.
Claim 2
Dependent Claim 55 words
Apparatus for insertion into a bore of a surgical handpiece, the apparatus comprising: a body, and a latch comprising a movable member connected to said body and having a latching structure configured to latchingly engage a surface of the surgical handpiece within the bore and a user-manipulable release portion fixedly mounted on the movable member.
Claim 3
Dependent Claim 13 words
The apparatus of claim 1, wherein said movable member comprises a cantilevered arm.
Claim 4
Dependent Claim 46 words
The apparatus of claim 2, wherein said cantilevered arm is configured to radially deflect during insertion into the bore of the handpiece and to return from the radial deflection to permit said latching structure to latchingly engage the surface of the surgical handpiece within the bore.
Claim 5
Dependent Claim 16 words
The apparatus of claim 2, wherein said user-manipulable release portion is mounted on said cantilevered arm.
Claim 6
Dependent Claim 18 words
The apparatus of claim 2, wherein said body is formed from a single piece of injection molded plastic.
Claim 7
Dependent Claim 37 words
The apparatus of claim 2, further comprising a ring structure that carries said cantilevered arm and is secured to said body so that said arm extends proximally to and adjacent to an exterior surface of said body.
Claim 8
Dependent Claim 22 words
The apparatus of claim 6, wherein said ring structure is joined to a distal end of said body by a snap fit.
Claim 9
Dependent Claim 39 words
The apparatus of claim 1, wherein said movable member is configured to radially deflect in response to pressure on said release portion so as to disengage said latching structure from the surface of the surgical handpiece within the bore.
Claim 10
Dependent Claim 16 words
The apparatus of claim 1, wherein said latching structure is positioned adjacent to said release portion.
Claim 11
Dependent Claim 22 words
The apparatus of claim 1, wherein said latching structure is spaced from said release portion along a longitudinal axis of said body.
Claim 12
Dependent Claim 59 words
The apparatus of claim 1, wherein said body includes a proximal end for insertion into the bore and wherein said latching structure includes: a leading edge that is ramped in a direction from the proximal end of said body toward a distal end of said body; and a latching surface oriented transversely to a longitudinal axis of said body.
Claim 13
Dependent Claim 40 words
The apparatus of claim 11, wherein said latching surface comprises a trailing edge at a distal end of said latching structure, said trailing edge being angled toward the distal end of said body in a radial direction from said body.
Claim 14
Dependent Claim 30 words
The apparatus of claim 1, wherein said body further comprises a tab that extends radially from an exterior surface thereof and is positioned to engage an opening in the handpiece.
Claim 15
Dependent Claim 15 words
The apparatus of claim 13, wherein said tab is positioned distally of said release portion.
Claim 16
Dependent Claim 30 words
The apparatus of claim 1, wherein said body further comprises a tab that extends radially from an exterior surface thereof and is positioned to engage an opening in the handpiece.
Claim 17
Dependent Claim 90 words
The apparatus of claim 1, wherein said body is configured as a hub of a surgical instrument, said apparatus further comprising: an outer member connected to and extending from said body to a tissue receiving opening at a distal end of said outer member; an inner member including at a distal end thereof a surgical tool to cut tissue, said inner member being positioned within said outer member and being rotatable relative to said outer member; and a drive shaft connected to said inner member for rotating said inner member.
Claim 18
Dependent Claim 34 words
The apparatus of claim 1, wherein said body carries a magnet positioned to be sensed by a sensor of the surgical handpiece when said apparatus is inserted into the bore of the surgical handpiece.
Claim 19
Dependent Claim 47 words
The apparatus of claim 1, wherein said body comprises an adapter for interconnecting a hub of a surgical instrument to the handpiece, said adapter having a proximal end for insertion into the bore and a distal end configured for attachment to the hub of the surgical instrument.
Claim 20
Dependent Claim 65 words
A surgical device including the apparatus of claim 1, said surgical device further comprising the handpiece having a proximal end and a distal end, wherein said handpiece includes a bore at the distal end thereof for insertion of said body of said apparatus and an annular flange located within the bore to latchingly engage said latching structure when said body is inserted into said bore.
Claim 21
Dependent Claim 60 words
The surgical device of claim 19, wherein said annular flange includes a ramped edge at an end closest to the distal end of the handpiece and, at an end furthest from the distal end of the handpiece, an edge that is angled toward the distal end of the handpiece in a radial direction from a longitudinal axis of the bore.
Claim 22
Dependent Claim 41 words
The surgical device of claim 19, wherein said handpiece includes a slot at the distal end thereof and wherein said latch further comprises a user-manipulable release portion positioned for insertion into said slot when said body is inserted into said bore.
Claim 23
Dependent Claim 49 words
The surgical device of claim 21, wherein said body includes a tab that extends radially from an exterior surface thereof and is positioned distally of said release portion, and wherein said handpiece includes an opening positioned for engagement with said tab when said body is inserted into said bore.
Claim 24
Dependent Claim 13 words
The apparatus of claim 1, wherein said movable member comprises a resilient member.
Claim 25
Dependent Claim 15 words
The apparatus of claim 1, wherein said user-manipulable release portion comprises a user-depressable release portion.
Claim 26
Dependent Claim 18 words
The apparatus of claim 1, wherein the user-manipulable release portion and the movable member comprise a unitary structure.
Claim 27
Independent Claim 66 words
An apparatus for insertion into a bore of a surgical handpiece, the apparatus comprising; a body, a latch comprising a movable member connected to said body and having a latching structure configured to latchingly engage a surface of the surgical handpiece within the bore, a user-manipulable release portion fixedly mounted on the movable member, and a tab extending radially from an exterior surface of said body.
Claim 28
Independent Claim 66 words
An apparatus for insertion into a bore of a surgical handpiece, the apparatus comprising; a body, a latch comprising a movable member connected to said body and having a latching structure configured to latchingly engage a surface of the surgical handpiece within the bore, a user-manipulable release portion fixedly mounted on the movable member, and a tab extending radially from an exterior surface of said body.
Claim 29
Dependent Claim 13 words
The apparatus of claim 26, wherein said movable member comprises a cantilevered arm.
Claim 30
Dependent Claim 46 words
The apparatus of claim 27, wherein said movable member is configured to radially deflect during insertion into the bore of the handpiece and to return from the radial deflection to permit said latching structure to latchingly engage the surface of the surgical handpiece within the bore.
Claim 31
Dependent Claim 16 words
The apparatus of claim 27, wherein said user-manipulable release portion is mounted on said cantilevered arm.
Claim 32
Dependent Claim 39 words
The apparatus of claim 29, wherein said movable member is configured to radially deflect in response to pressure on said release portion so as to disengage said latching structure from the surface of the surgical handpiece within the bore.
Claim 33
Dependent Claim 16 words
The apparatus of claim 29, wherein said latching structure is positioned adjacent to said release portion.
Claim 34
Dependent Claim 22 words
The apparatus of claim 29, wherein said latching structure is spaced from said release portion along a longitudinal axis of said body.
Claim 35
Dependent Claim 56 words
The apparatus of claim 26, wherein said body includes a proximal end for insertion into the bore and wherein said latching structure includes: a leading edge that is ramped from the proximal end of said body toward a distal end of said body; and a latching surface oriented transversely to a longitudinal axis of said body.
Claim 36
Dependent Claim 40 words
The apparatus of claim 33, wherein said latching surface comprises a trailing edge at a distal end of said latching structure, said trailing edge being angled toward the distal end of said body in a radial direction from said body.
Claim 37
Dependent Claim 15 words
The apparatus of claim 34, wherein said tab is positioned distally of said release portion.
Claim 38
Dependent Claim 90 words
The apparatus of claim 26, wherein said body is configured as a hub of a surgical instrument, said apparatus further comprising: an outer member connected to and extending from said body to a tissue receiving opening at a distal end of said outer member; an inner member including at a distal end thereof a surgical tool to cut tissue, said inner member being positioned within said outer member and being rotatable relative to said outer member; and a drive shaft connected to said inner member for rotating said inner member.
Claim 39
Dependent Claim 47 words
The apparatus of claim 26, wherein said body comprises an adapter for interconnecting a hub of a surgical instrument to the handpiece, said adapter having a proximal end for insertion into the bore and a distal end configured for attachment to the hub of the surgical instrument.
Claim 40
Dependent Claim 65 words
A surgical device including the apparatus of claim 26, said surgical device further comprising the handpiece having a proximal end and a distal end, wherein said handpiece includes a bore at the distal end thereof for insertion of said body of said apparatus and an annular flange located within the bore to latchingly engage said latching structure when said body is inserted into said bore.
Claim 41
Dependent Claim 60 words
The surgical device of claim 38, wherein said annular flange includes a ramped edge at an end closest to the distal end of the handpiece and, at an end furthest from the distal end of the handpiece, an edge that is angled toward the distal end of the handpiece in a radial direction from a longitudinal axis of the bore.
Claim 42
Dependent Claim 13 words
The apparatus of claim 26, wherein said movable member comprises a resilient member.
Claim 43
Dependent Claim 15 words
The apparatus of claim 26, wherein said user-manipulable release portion comprises a user-depressable release portion.
Claim 44
Dependent Claim 39 words
The apparatus of claim 26, wherein said movable member is configured to radially deflect in response to pressure on said release portion so as to disengage said latching structure from the surface of the surgical handpiece within the bore.
Claim 45
Dependent Claim 18 words
The apparatus of claim 26, wherein the user-manipulable release portion and the movable member comprise a unitary structure.
Claim 46
Independent Claim 128 words
An apparatus for insertion into a bore of a surgical handpiece, the apparatus comprising: a body; and a latch comprising a movable cantilevered arm connected to said body and having a latching structure configured to latchingly engage a surface of the surgical handpiece within the bore, and a user-manipulable release portion fixedly mounted on said cantilevered arm; wherein said movable cantilevered arm is configured to radially deflect during insertion into the bore of the handpiece and to return from the radial deflection to permit said latching structure to latchingly engage the surface of the surgical handpiece within the bore, and to radially deflect in response to pressure on said release portion so as to disengage said latching structure from the surface of the surgical handpiece within the bore.
Claim 47
Independent Claim 128 words
An apparatus for insertion into a bore of a surgical handpiece, the apparatus comprising: a body; and a latch comprising a movable cantilevered arm connected to said body and having a latching structure configured to latchingly engage a surface of the surgical handpiece within the bore, and a user-manipulable release portion fixedly mounted on said cantilevered arm; wherein said movable cantilevered arm is configured to radially deflect during insertion into the bore of the handpiece and to return from the radial deflection to permit said latching structure to latchingly engage the surface of the surgical handpiece within the bore, and to radially deflect in response to pressure on said release portion so as to disengage said latching structure from the surface of the surgical handpiece within the bore.
Claim 48
Dependent Claim 90 words
The apparatus of claim 44, wherein said body is configured as a hub of a surgical instrument, said apparatus further comprising: an outer member connected to and extending from said body to a tissue receiving opening at a distal end of said outer member; an inner member including at a distal end thereof a surgical tool to cut tissue, said inner member being positioned within said outer member and being rotatable relative to said outer member; and a drive shaft connected to said inner member for rotating said inner member.
Claim 49
Dependent Claim 47 words
The apparatus of claim 44, wherein said body comprises an adapter for interconnecting a hub of a surgical instrument to the handpiece, said adapter having a proximal end for insertion into the bore and a distal end configured for attachment to the hub of the surgical instrument.
Claim 50
Dependent Claim 13 words
The apparatus of claim 44, wherein said movable member comprises a resilient member.
Claim 51
Dependent Claim 19 words
The apparatus of claim 44, wherein the user-manipulable release portion and the movable cantilevered arm comprise a unitary structure.
Claim 52
Dependent Claim 78 words
A surgical device comprising: a handpiece having a proximal end and a distal end, wherein said handpiece includes a bore at the distal end thereof; and an apparatus including: a body configured for insertion into the bore of the handpiece, and a latch comprising a movable member connected to said body and having a latching structure configured to latchingly engage a surface of the handpiece within the bore and a user-manipulable release portion mounted on the movable member.
Claim 53
Dependent Claim 78 words
A surgical device comprising: a handpiece having a proximal end and a distal end, wherein said handpiece includes a bore at the distal end thereof; and an apparatus including: a body configured for insertion into the bore of the handpiece, and a latch comprising a movable member connected to said body and having a latching structure configured to latchingly engage a surface of the handpiece within the bore and a user-manipulable release portion mounted on the movable member.
Claim 54
Dependent Claim 14 words
The surgical device of claim 49, wherein said movable member comprises a cantilevered arm.
Claim 55
Dependent Claim 47 words
The surgical device of claim 50, wherein said movable member is configured to radially deflect during insertion into the bore of said handpiece and to return from the radial deflection to permit said latching structure to latchingly engage said surface of said surgical handpiece within the bore.
Claim 56
Dependent Claim 16 words
The apparatus of claim 50, wherein said user-manipulable release portion is mounted on said cantilevered arm.
Claim 57
Dependent Claim 39 words
The apparatus of claim 52, wherein said movable member is configured to radially deflect in response to pressure on said release portion so as to disengage said latching structure from said surface of said surgical handpiece within the bore.
Claim 58
Dependent Claim 31 words
The surgical device of claim 53, wherein said handpiece includes a slot at the distal end for insertion of said user-manipulable release portion when said body is inserted into the bore.
Claim 59
Dependent Claim 49 words
The surgical device of claim 54, wherein said body includes a tab that extends radially from an exterior surface thereof and is positioned distally of said release portion, and wherein said handpiece includes an opening positioned for engagement with said tab when said body is inserted into said bore.
Claim 60
Dependent Claim 32 words
The surgical device of claim 49, wherein said handpiece further comprises an annular flange located within the bore to latchingly engage said latching structure when said body is inserted into the bore.
Claim 61
Dependent Claim 60 words
The surgical device of claim 56, wherein said annular flange includes a ramped edge at an end closest to the distal end of the handpiece and, at an end furthest from the distal end of the handpiece, an edge that is angled toward the distal end of the handpiece in a radial direction from a longitudinal axis of the bore.
Claim 62
Dependent Claim 94 words
The surgical device of claim 49, wherein said body of said apparatus is configured as a hub of a surgical instrument, said apparatus further comprising: an outer member connected to and extending from said body to a tissue receiving opening at a distal end of said outer member; an inner member including at a distal end thereof a surgical tool to cut tissue, said inner member being positioned within said outer member and being rotatable relative to said outer member; and a drive shaft connected to said inner member for rotating said inner member.
Claim 63
Dependent Claim 49 words
The surgical device of claim 58, wherein said handpiece further comprises a motor having a drive shaft, and wherein said drive shaft of said surgical instrument includes an extension having sloped, canted edges at a proximal end of the extension for engagement with said drive shaft of said motor.
Claim 64
Dependent Claim 51 words
The surgical device of claim 49, wherein said body of said apparatus comprises an adapter for interconnecting a hub of a surgical instrument to said handpiece, said adapter having a proximal end for insertion into the bore and a distal end configured for attachment to the hub of the surgical instrument.
Claim 65
Dependent Claim 13 words
The apparatus of claim 49, wherein said movable member comprises a resilient member.
Claim 66
Dependent Claim 15 words
The apparatus of claim 49, wherein said user-manipulable release portion comprises a user-depressable release portion.
Claim 67
Dependent Claim 39 words
The apparatus of claim 49, wherein said movable member is configured to radially deflect in response to pressure on said release portion so as to disengage said latching structure from the surface of the surgical handpiece within the bore.
Claim 68
Dependent Claim 96 words
A surgical device, comprising: a handpiece having a proximal end and a distal end, wherein said handpiece includes at its distal end: a bore, an annular flange located within the bore, and an opening; and a surgical instrument including: a body configured for insertion into said bore, a latching mechanism attached to said body and configured to latchingly engage with said annular flange to secure said surgical instrument to said handpiece in an axial direction, and a tab configured to engage with said opening to secure said surgical instrument to said handpiece in a circumferential direction.
Claim 69
Dependent Claim 96 words
A surgical device, comprising: a handpiece having a proximal end and a distal end, wherein said handpiece includes at its distal end: a bore, an annular flange located within the bore, and an opening; and a surgical instrument including: a body configured for insertion into said bore, a latching mechanism attached to said body and configured to latchingly engage with said annular flange to secure said surgical instrument to said handpiece in an axial direction, and a tab configured to engage with said opening to secure said surgical instrument to said handpiece in a circumferential direction.
Claim 70
Dependent Claim 76 words
The surgical device of claim 64, wherein said handpiece includes a recessed portion on the exterior surface and including a slot, and said latching mechanism comprises a latch and a user-manipulable release portion configured to fit within the slot and to move said latch from an engaging position in which said latch engages said annular flange to a non-engaging position in which said latch is disengaged from said annular flange when the release portion is depressed.
Claim 71
Dependent Claim 24 words
The surgical device of claim 65, wherein said annular flange is positioned proximally of a proximal end of said slot of said recessed portion.
Claim 72
Dependent Claim 38 words
The surgical device of claim 65, wherein said latching mechanism further comprises a cantilevered arm that is radially spaced from an exterior surface of said body, and wherein said user-manipulable release portion is mounted on the cantilevered arm.
Claim 73
Dependent Claim 20 words
The surgical device of claim 65, further comprising a spring-loaded plunger coupled between said latch and said user-manipulable release portion.
Claim 74
Dependent Claim 21 words
The surgical device of claim 65, wherein said slot of said recessed portion has a flared opening at its distal end.
Claim 75
Dependent Claim 116 words
A surgical handpiece having a proximal end and a distal end, wherein said handpiece includes at its distal end: a bore configured for reception of a body of a surgical apparatus, a recessed portion on the exterior surface and including a slot for reception of a user-manipulable release portion of the surgical apparatus, an annular flange located within the bore and configured to latchingly engage with a latching structure of the surgical apparatus to secure the surgical apparatus within the bore in a direction corresponding to a longitudinal axis of the bore, and an opening configured to engage a tab of the surgical apparatus to secure the surgical apparatus within the bore in a circumferential direction.
Claim 76
Dependent Claim 116 words
A surgical handpiece having a proximal end and a distal end, wherein said handpiece includes at its distal end: a bore configured for reception of a body of a surgical apparatus, a recessed portion on the exterior surface and including a slot for reception of a user-manipulable release portion of the surgical apparatus, an annular flange located within the bore and configured to latchingly engage with a latching structure of the surgical apparatus to secure the surgical apparatus within the bore in a direction corresponding to a longitudinal axis of the bore, and an opening configured to engage a tab of the surgical apparatus to secure the surgical apparatus within the bore in a circumferential direction.
Claim 77
Dependent Claim 34 words
The surgical handpiece of claim 70, wherein said annular flange is located at a position in the bore corresponding to said slot of said recessed portion and includes a gap corresponding to said slot.
Claim 78
Dependent Claim 28 words
The surgical handpiece of claim 70, wherein said annular flange is located at a position in the bore that is proximal to said slot of said recessed portion.
Claim 79
Dependent Claim 104 words
A surgical instrument for insertion into a bore of a surgical handpiece, the surgical instrument comprising: a body; a latching mechanism comprising: a latch, and a user-manipulable release portion fixedly mounted on the latch and configured to move said latch radially between a first position in which said latch engages a surface within the bore of the handpiece and a second position in which said latch is disengaged from a surface within the bore of the handpiece when the release portion is depressed; and a tab that extends radially from an exterior surface of said body and is positioned distally of said release portion.
Claim 80
Dependent Claim 104 words
A surgical instrument for insertion into a bore of a surgical handpiece, the surgical instrument comprising: a body; a latching mechanism comprising: a latch, and a user-manipulable release portion fixedly mounted on the latch and configured to move said latch radially between a first position in which said latch engages a surface within the bore of the handpiece and a second position in which said latch is disengaged from a surface within the bore of the handpiece when the release portion is depressed; and a tab that extends radially from an exterior surface of said body and is positioned distally of said release portion.
Claim 81
Dependent Claim 38 words
The surgical instrument of claim 73, wherein said latching mechanism further comprises a cantilevered arm that is radially spaced from an exterior surface of said body, and wherein said user-manipulable release portion is mounted on the cantilevered arm.
Claim 82
Dependent Claim 20 words
The surgical instrument of claim 73, further comprising a spring-loaded plunger coupled between said latch and said user-manipulable release portion.
Claim 83
Dependent Claim 18 words
The surgical instrument of claim 73, wherein the user-manipulable release portion and the latch comprise a unitary structure.
Claim 84
Dependent Claim 114 words
A surgical instrument configured to be inserted into a bore of a surgical handpiece, the surgical instrument comprising a body disposed along an axis, at least a portion of said body including a ramped leading surface configured to be advanced past a latching surface within the bore while said body is being inserted into the bore, and an engagement surface oriented transversely with respect to the axis of said body and configured to engage the latching surface when said body is fully inserted into the bore; and a release portion fixedly mounted on said body for disengaging said engagement surface from the latching surface to allow said body to be withdrawn from the bore.
Claim 85
Dependent Claim 114 words
A surgical instrument configured to be inserted into a bore of a surgical handpiece, the surgical instrument comprising a body disposed along an axis, at least a portion of said body including a ramped leading surface configured to be advanced past a latching surface within the bore while said body is being inserted into the bore, and an engagement surface oriented transversely with respect to the axis of said body and configured to engage the latching surface when said body is fully inserted into the bore; and a release portion fixedly mounted on said body for disengaging said engagement surface from the latching surface to allow said body to be withdrawn from the bore.
Claim 86
Dependent Claim 17 words
The surgical instrument of claim 77, wherein the release portion and the body comprise a unitary structure.
Claim 87
Dependent Claim 84 words
A surgical instrument for insertion into a bore of a surgical handpiece, the surgical instrument comprising: a body; and a latching mechanism comprising: a latch, a user-depressable release portion configured to move said latch radially between a first position in which said latch engages a surface within the bore of the handpiece and a second position in which said latch is disengaged from a surface within the bore of the handpiece, and a spring-loaded plunger coupled between the latch and the user-depressable release portion.
Claim 88
Dependent Claim 84 words
A surgical instrument for insertion into a bore of a surgical handpiece, the surgical instrument comprising: a body; and a latching mechanism comprising: a latch, a user-depressable release portion configured to move said latch radially between a first position in which said latch engages a surface within the bore of the handpiece and a second position in which said latch is disengaged from a surface within the bore of the handpiece, and a spring-loaded plunger coupled between the latch and the user-depressable release portion.
Claim 89
Dependent Claim 86 words
A surgical instrument for insertion into a bore of a surgical handpiece, the surgical instrument comprising: a body; and a latching mechanism mounted on the body and comprising: a latch mounted on the body, and a user-depressable release portion mounted on the body and configured to move said latch radially between a first position in which said latch engages a surface within the bore of the handpiece and a second position in which said latch is disengaged from a surface within the bore of the handpiece.
Claim 90
Dependent Claim 86 words
A surgical instrument for insertion into a bore of a surgical handpiece, the surgical instrument comprising: a body; and a latching mechanism mounted on the body and comprising: a latch mounted on the body, and a user-depressable release portion mounted on the body and configured to move said latch radially between a first position in which said latch engages a surface within the bore of the handpiece and a second position in which said latch is disengaged from a surface within the bore of the handpiece.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-02-15 2002-08-17 2003-02-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-02-15 2006-08-17 2007-02-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-02-15 2010-08-17 2011-02-16 $7700.00 Window Closed / Lapsed

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