Handle for surgical instruments
First Claim
1. An endoscopic or laparoscopic surgical instrument comprising:
- a handle assembly including a barrel portion, a stationary handle and a pivoting handle extending from said barrel portion, said barrel portion having an interior cavity accommodating at least a portion of said pivoting handle;
a body assembly extending distally from said handle assembly and defining a longitudinal axis, said body assembly having a pair of coaxial members including an inner rod member having a proximal end connected to said pivoting handle and mounted to be longitudinally slidable with respect to an outer tube member in response to movement of said pivoting handle, said body assembly terminating at an end remote from said handle assembly in a reciprocatingly movable tool mechanism; and
a ratchet mechanism at least partially positioned within said interior cavity of said barrel portion of said handle assembly, said ratchet mechanism being operatively associated with at least one of said pair of coaxial members of said body assembly to provide incremental movement of said tool mechanism with respect to said longitudinal axis of said body assembly.
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Accused Products
Abstract
An endoscopic or laparoscopic surgical instrument having an internally disposed ratchet mechanism located within a barrel portion of a handle assembly. The instrument includes a handle assembly having a pivoting handle and a stationary handle, a barrel portion to which an elongated body assembly is secured, and a ratchet mechanism for releasably positioning a tool mechanism located at the distal end of the body assembly at various increments. The ratchet mechanism comprises a pawl member and a rack member which are disposed within the handle assembly. A rotational knob and locking member may also be provided to lock the body assembly at various orientations to the longitudinal axis.
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Citations
58 Claims
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1. An endoscopic or laparoscopic surgical instrument comprising:
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a handle assembly including a barrel portion, a stationary handle and a pivoting handle extending from said barrel portion, said barrel portion having an interior cavity accommodating at least a portion of said pivoting handle; a body assembly extending distally from said handle assembly and defining a longitudinal axis, said body assembly having a pair of coaxial members including an inner rod member having a proximal end connected to said pivoting handle and mounted to be longitudinally slidable with respect to an outer tube member in response to movement of said pivoting handle, said body assembly terminating at an end remote from said handle assembly in a reciprocatingly movable tool mechanism; and a ratchet mechanism at least partially positioned within said interior cavity of said barrel portion of said handle assembly, said ratchet mechanism being operatively associated with at least one of said pair of coaxial members of said body assembly to provide incremental movement of said tool mechanism with respect to said longitudinal axis of said body 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, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A handle assembly for endoscopic and laparoscopic surgical instruments, said instrument including a body assembly defining a longitudinal axis and being secured to said handle assembly and having an inner rod member coaxially slidable with respect to said longitudinal axis within an outer tube member, said instrument further including a tool mechanism secured at an end of said body assembly distal from said handle assembly, said handle assembly comprising:
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a pivoting handle connected to a proximal end of said inner rod member; a stationary handle; a barrel portion supporting said stationary handle and having an interior cavity accommodating at least a portion of said pivoting handle; and a ratchet mechanism at least partially disposed within said interior cavity of said barrel portion of said handle assembly for incrementally moving said tool mechanism with respect to said longitudinal axis of said body assembly. - View Dependent Claims (35, 36, 37)
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38. An endoscopic or laparoscopic surgical instrument comprising:
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a handle assembly having an interior cavity and including a barrel portion and at least one pivoting handle; a body assembly extending from said handle assembly and defining a longitudinal axis, said body assembly having a pair of coaxial members including an inner rod member having a proximal end connected to said at least one pivoting handle and slidable with respect to said longitudinal axis within an outer tube member in response to movement of said at least one pivoting handle, said body assembly terminating at an end remote from said handle assembly in a reciprocatingly movable tool mechanism; and incremental means operatively associated with said pivoting handle positioned at least partially within said interior cavity of said handle assembly for engaging at least one of said pair of coaxial members of said body assembly to provide incremental movement of said tool mechanism with respect to said longitudinal axis in response to movement of said at least one pivoting handle of said handle assembly. - View Dependent Claims (39, 40, 41, 42)
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43. An endoscopic or laparoscopic surgical instrument comprising:
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a handle assembly having an interior cavity and at least one pivoting handle; a body assembly extending distally from said handle assembly and defining a longitudinal axis, said body assembly having a pair of coaxial members including an inner rod member having a proximal end connected to said at least one pivoting handle and slidable with respect to said longitudinal axis within an outer tube member in response to movement of said at least one pivoting handle of said handle assembly, said body assembly terminating at an end remote from said handle assembly in a reciprocatingly movable tool mechanism; means for providing incremental movement of said tool mechanism substantially housed within said interior cavity of said handle assembly; and means for moving said incremental movement means between an operable and an inoperable position, said incremental movement means providing for incremental movement of said tool mechanism with respect to said longitudinal axis when in said operable position and unrestricted movement of said tool mechanism with respect to said longitudinal axis when in said inoperable position. - View Dependent Claims (44)
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45. An apparatus comprising:
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a handle assembly having an interior cavity and at least one pivoting handle; an endoscopic portion defining a longitudinal axis and extending from said handle assembly; a tool mechanism extending from a distal end of said endoscopic portion and movable between open and closed positions with respect to said longitudinal axis; said handle assembly including a ratchet mechanism for allowing incremental movement of said tool mechanism, at least a portion of said ratchet mechanism being mounted within said interior cavity of said handle assembly; and means for deactivating said ratchet mechanism for allowing unrestricted movement of said tool mechanism between said open and said closed positions. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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Specification