Needle grasping apparatus
First Claim
1. A handle assembly for a surgical instrument, the surgical instrument having first and second axially, relatively displaceable members each with a proximal end, the first and second members for clamping an item that prohibits relative displacement between the first and second members, the handle assembly comprising:
- a housing configured for coupling to the proximal end of the first member;
a biasing assembly configured for coupling to the proximal end of the second member, the biasing assembly having a first and a second biasing element and a casing, the casing configured for moving relative to the housing and to the second member; and
a trigger movably coupled to the housing and configured to displace the casing relative to the housing, wherein the first biasing element extends between the casing and the housing and the second biasing element is configured for extending between the second member and the casing and is configured for supplying a clamping force to the item.
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Accused Products
Abstract
Apparatus for needle grasping and performing a second modality comprising a sheath axially extending between distal and proximal ends thereof. The device includes an inner hollow tube with a slot formed therein for receiving a needle at the distal end. Retraction and extension of the inner tubular member relative to the sheath enable the grasping and releasing of a suture needle received in the slot. A handle is provided at the proximal end of the apparatus for selectively extending and retracting the inner tube relative to the sheath and for retaining the inner tube in its extended and retracted positions. A second switch can be provided in the handle to actuate a catheter slidably inserted through the inner tube to perform a second therapeutic modality. The catheter preferably includes a distal bight that forms a loop when extended from the distal end of the sheath for facilitating intracorporeal knot tying thereat. The catheter includes a lumen therethrough for receiving suture thread for use at the distal end of the sheath.
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Citations
41 Claims
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1. A handle assembly for a surgical instrument, the surgical instrument having first and second axially, relatively displaceable members each with a proximal end, the first and second members for clamping an item that prohibits relative displacement between the first and second members, the handle assembly comprising:
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a housing configured for coupling to the proximal end of the first member; a biasing assembly configured for coupling to the proximal end of the second member, the biasing assembly having a first and a second biasing element and a casing, the casing configured for moving relative to the housing and to the second member; and a trigger movably coupled to the housing and configured to displace the casing relative to the housing, wherein the first biasing element extends between the casing and the housing and the second biasing element is configured for extending between the second member and the casing and is configured for supplying a clamping force to the item. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A surgical instrument having a proximal and a distal end, the surgical instrument comprising:
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an elongate first member extending from the distal end to the proximal end; an elongate second member extending from the distal end to the proximal end, the second member being axially, displaceable relative to the first member, the first and second members configured for clamping an item that prohibits relative displacement between the first and second members; an end effector coupled to the second member at the distal end; a housing coupled to the first member at the proximal end; a biasing assembly coupled to the second member at the proximal end, the biasing assembly having a first and a second biasing element and a casing, the casing capable of moving relative to the housing and to the second member; and a trigger movably coupled to the housing for displacing the casing relative to the housing, wherein the first biasing element extends between the casing and the housing and the second biasing element extends between the second member and the casing and is configured to supply a clamping force to the item. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A handle assembly for a surgical instrument, the surgical instrument having first and second axially, relatively displaceable members each having a proximal end and a distal end, wherein relative displacement of the members defines first and second limit positions and an intermediate position for supplying a clamping load to an item interfering with the relative displacement between the members, the handle assembly configured for coupling to the proximal ends of the first and second members, the handle assembly comprising:
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a housing configured for attaching to the proximal end of the first member; a trigger rotatably coupled to the housing for movement between first and second trigger positions; and a biasing assembly configured for mounting coaxially with the members and having first and second biasing elements, the biasing assembly being responsive to motion of the trigger for permitting motion to the first limit position when the trigger is at a first trigger position and, when the trigger is at a second trigger position, for permitting motion to one of the second limit position and the intermediate position depending upon the presence of the item that prohibits relative displacement between the members. - View Dependent Claims (27, 28, 29)
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30. A surgical instrument having a proximal and a distal end, the surgical instrument comprising:
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an elongate first member extending from the distal end to the proximal end; an elongate second member extending from the distal end to the proximal end, the second member being axially, relatively displaceable from the first member, the first and second members configured for clamping an item that prohibits relative displacement between the first and second members; an end effector coupled to the second member at the distal end; a housing coupled to the first member at the proximal end; a biasing assembly slidably coupling the housing and the proximal end of the second member, the biasing assembly having at least one biasing element and a casing capable of movement relative to both the first and second members; and a trigger pivotably coupled to the housing for deflecting and releasing the at least one biasing element and displacing the second member relative to the first member, wherein the trigger has a first trigger position corresponding to an extended position of the second member relative to the first member and a second trigger position corresponding to a retracted position of the second member relative to the first member. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A handle assembly for a surgical instrument, the surgical instrument having first and second axially, relatively displaceable members each with a proximal end, the handle assembly comprising:
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a housing configured for coupling to the proximal end of the first member; a biasing assembly configured for coupling to the proximal end of the second member, the biasing assembly having a first and a second compressible element; and a trigger coupled to the housing and configured for displacing the first member relative to the second member, wherein the trigger is a camming device rotatably coupled to the housing, and the first compressible element is configured for biasing the distal end of the first member away from the distal end of the second member and the second compressible element is configured for supplying a clamping force to an item that prohibits relative displacement between the first member and the second member.
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37. A handle assembly for a surgical instrument, the surgical instrument having first and second axially, relatively displaceable members each with a proximal end, the handle assembly comprising:
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a housing configured for coupling to the proximal end of the first member; a biasing assembly configured for coupling to the proximal end of the second member, the biasing assembly having a first and a second compressible element; and a trigger coupled to the housing and configured for displacing the first member relative to the second member, wherein the biasing assembly includes an adjustment device configured for changing an amount of clamping force supplied to an item that prohibits relative displacement between the first member and the second member.
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38. A surgical instrument having a proximal and a distal end, the surgical instrument comprising:
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an elongate first member extending from the distal end to the proximal end; an elongate second member extending from the distal end to the proximal end, the second member being axially, displaceable relative to the first member; an end effector coupled to the second member at the distal end; a housing coupled to the first member at the proximal end; a biasing assembly coupled to the second member at the proximal end, the biasing assembly having a first and a second compressible element; and a trigger coupled to the housing for displacing the second member-relative to the first member, wherein the trigger is a camming device rotatably coupled to the housing, and the first compressible element biases the distal end of the first member away from the distal end of the second member and the second compressible element supplies a clamping force to an item that prohibits relative displacement between the first member and the second member.
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39. A surgical instrument having a proximal and a distal end, the surgical instrument comprising:
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an elongate first member extending from the distal end to the proximal end; an elongate second member extending from the distal end to the proximal end, the second member being axially, displaceable relative to the first member; an end effector coupled to the second member at the distal end; a housing coupled to the first member at the proximal end; a biasing assembly coupled to the second member at the proximal end, the biasing assembly having a first and a second compressible element; and a trigger coupled to the housing for displacing the second member relative to the first member, wherein the biasing assembly includes an adjustment device for changing an amount of the clamping force supplied to an item that prohibits relative displacement between the first member and the second member.
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40. A handle assembly for a surgical instrument, the surgical instrument having first and second axially, relatively displaceable members each having a proximal end and a distal end, wherein relative displacement of the members defines first and second limit positions and an intermediate position for supplying a clamping load to an item interfering with the relative displacement between the members, the handle assembly configured for coupling to the proximal ends of the first and second members, the handle assembly comprising:
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a housing configured for attaching to the proximal end of the first member; a trigger coupled to the housing for movement between first and second trigger positions; and a biasing assembly configured for mounting coaxially with the members, the biasing assembly being responsive to motion of the trigger and configured for permitting motion to the first limit position when the trigger is at a first trigger position, to the second limit position when the trigger is at a second trigger position, and to the intermediate position when the trigger is at the second position and the item prohibits relative displacement between the members, wherein the trigger is a camming device rotatably coupled to the housing.
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41. A surgical instrument having a proximal and a distal end, the surgical instrument comprising:
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an elongate first member extending from the distal end to the proximal end; an elongate second member extending from the distal end to the proximal end, the second member being axially, relatively displaceable from the first member; an end effector coupled to the second member at the distal end; a housing coupled to the first member at the proximal end; a biasing assembly slidably coupling the housing and the proximal end of the second member, the biasing assembly having at least one compressible element; and a trigger coupled to the housing for compressing and releasing at least one compressible element and displacing the second member relative to the first member, wherein the trigger has a first trigger position corresponding to an extended position of the second member relative to the first member and a second trigger position corresponding to a retracted position of the second member relative to the first member, wherein a force applied by the biasing assembly to the trigger in the first trigger position creates a moment about a trigger pivot point that maintains the trigger in the first trigger position, and a force applied by the biasing element to the trigger in the second trigger position creates a moment about the trigger pivot point that maintains the trigger in the second trigger position.
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Specification