Endoscoptic surgical instrument with guided jaws and ratchet control
First Claim
1. A surgical instrument comprising:
- a tool assembly comprising;
an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising;
an outer sleeve,an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, anda guide member coupled to the distal end of the jaw actuation device, andfirst and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws move relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc without changing the shape of the rotatable jaw; and
a handle assembly for retaining the tool assembly at its proximal end and translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaws.
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Accused Products
Abstract
A surgical instrument comprising a handle assembly with a detachable tool assembly is disclosed. The tool assembly comprises rotatable jaws having arc defining portions near their proximal ends which define arcs having arc centers displaced from the jaws. The jaws are coupled to the distal end of an inner rod which is longitudinally translatable within an outer sleeve. When the inner rod is translated, a guide member at the distal end of the outer sleeve contacts the arc defining portion of the jaws such that each jaw rotates about the center of its arc. The handle assembly comprises a trigger which engages a translation member on the inner rod. As the trigger is rotated, the translation member carries the inner rod back and forth to actuate the jaws. The translation member is coupled to the inner rod via a coupler having a spring which limits the closing force applied to the jaws. The instrument also includes a ratchet feature function which allows closing force to be applied to the jaws in increments and also allows the jaws to be held in a closed position at a desired closing force.
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Citations
34 Claims
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1. A surgical instrument comprising:
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a tool assembly comprising; an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, and a guide member coupled to the distal end of the jaw actuation device, and first and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws move relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc without changing the shape of the rotatable jaw; and a handle assembly for retaining the tool assembly at its proximal end and translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaws. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14)
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6. The surgical instrument of claim 6 wherein the ratchet member is pivotable such that the grooves on the ratchet member can be prevented from engaging the shoulder.
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15. A surgical tool assembly comprising:
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an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, and a guide member coupled to the distal end of the jaw actuation device; first and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws move relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc without changing the shape of the rotatable jaw. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A jaw for a surgical instrument comprising:
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a distal end having a jaw blade; and a proximal end having a portion which is formed to a shape which defines an arc having a center which is displaced from the jaw, said portion being engageable by a guide member to rotate the jaw approximately about the center of the arc as the jaw and the guide member move relative to each other. - View Dependent Claims (26)
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27. A method of using an endoscopic surgical instrument comprising:
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providing a surgical instrument comprising; an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, and a guide member coupled to the distal end of the jaw actuation device, and first and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws moves relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc without changing the shape of the rotatable jaw, and a handle assembly for retaining the tool assembly at its proximal end and translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaw; and with the handle assembly, translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaws.
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28. A surgical instrument comprising:
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a tool assembly comprising; an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, and a guide member coupled to the distal end of the jaw actuation device and having an arcuate portion, and first and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the arcuate portion of the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws move relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc; and a handle assembly for retaining the tool assembly at its proximal end and translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaws.
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29. A surgical instrument comprising:
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a tool assembly comprising; an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, a cleaning port for allowing cleaning fluid into the tool assembly, and a guide member coupled to the distal end of the jaw actuation device, and first and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws move relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc; and a handle assembly for retaining the tool assembly at its proximal end and translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaws. - View Dependent Claims (30)
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31. A surgical instrument comprising:
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a tool assembly comprising; an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, and a guide member coupled to the distal end of the jaw actuation device, and first and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws move relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc; and a handle assembly comprising a retainer for retaining the tool assembly at its proximal end and retaining the outer sleeve against longitudinal movement relative to the handle assembly, the handle assembly translating the inner rod relative to the outer sleeve to rotate the rotatable jaws.
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32. A surgical instrument comprising:
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a tool assembly comprising; an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, and a guide member coupled to the distal end of the jaw actuation device, first and second rotatable jaws, each rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaws being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portions of the rotatable jaws such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portions of the rotatable jaws move relative to the guide member and are guided by the guide member to rotate each rotatable jaw approximately about the center of its respective arc, a translation member coupled to the jaw actuation device near the proximal end of the jaw actuation device and engageable to translate one of the inner rod and the outer sleeve relative to the other, and a coupler coupling the translation member to the jaw actuation device, the coupler including a spring for limiting force applied to rotate the rotatable jaws; and a handle assembly for retaining the tool assembly at its proximal end and translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaws. - View Dependent Claims (33)
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34. A surgical instrument comprising:
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a tool assembly comprising; an elongate jaw actuation device having a proximal end and a distal end, the jaw actuation device comprising; an outer sleeve, an inner rod within the outer sleeve, one of the inner rod and the outer sleeve being longitudinally translatable relative to the other, and a guide member coupled to the distal end of the jaw actuation device; at least one rotatable jaw comprising an arc defining portion shaped to define an arc having a center which is displaced from the jaw, the rotatable jaw being coupled to the distal end of the jaw actuation device and engaging the guide member at the arc defining portion of the rotatable jaw such that, as one of the inner rod and the outer sleeve is longitudinally translated relative to the other, the arc defining portion of the rotatable jaw moves relative to the guide member and is guided by the guide member to rotate the rotatable jaw approximately about the center of the arc; and a drive pin engaging the rotatable jaw to move the rotatable jaw relative to the guide member to rotate the rotatable jaw as one of the inner rod and outer sleeve is translated relative to the other; and a handle assembly for retaining the tool assembly at its proximal end and translating one of the inner rod and the outer sleeve relative to the other to rotate the rotatable jaw.
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Specification