Abstract: An articulation joint includes proximal links, distal links, and intermediate links connecting the proximal and distal links. The articulation joint has a straight configuration along a straight longitudinal axis, a first bent configuration when the articulation joint bends toward a first side of the longitudinal axis, and a second bent configuration when the articulation joint bends toward a second side of the longitudinal axis, opposite to the first side. When the articulation joint is in the straight configuration, a first gap is defined at the first side between adjacent proximal links, and the adjacent proximal links contact each other at the second side, a second gap is defined at each of the first side and the second side between adjacent distal links, and a third gap is defined at the first side between adjacent intermediate links, and adjacent intermediate links contact each other at the second side.

Abstract: A medical device including a handle and a distal tip. The distal tip includes an elevator configured to change an orientation of an accessory device. The elevator is rotatable about a first axis and a second axis. Rotation of the elevator about the first axis raises or lowers the elevator. Rotation of the elevator about the second axis angles the elevator to the right or left. The medical device includes a first wire attached to a first side of the elevator and a second wire attached to a second side of the elevator. Moving the first wire and second wire the same distance proximally or distally relative to the distal tip rotates the elevator about the first axis. Moving one of the first wire and second wire a distance relative to the other of the first wire and second wire rotates the elevator about the second axis.

Abstract: A medical device includes a handle including an axle, a device shaft extending from the handle to a distal end, and a control device. The control device is coupled to the handle, and the control device includes a knob. The knob is rotatable relative to the handle. The control device also includes a control shaft extending from the knob, at least one spring clutch including two legs, and a spool. The spool is rotatable relative to the axle. The control device also includes one or more wires coupled to the spool. Rotation of the knob is configured to rotate the control shaft, causing the at least one spring clutch to loosen, the spool to rotate, and the one or more wires to move.

Abstract: A linkage assembly for a medical device may comprise: a rotatable member configured to rotate about a rotation axis; a piston; and a connecting rod rotatably connected to the rotatable member and the piston and movable along a range. A first end of the range may correspond to an initial position of a distal member movable by the linkage assembly, and a second end of the range may correspond to a final position of a distal member. In a first configuration of the connecting rod, at the first end of the range, a proximal end of the connecting rod may be offset from a longitudinal axis by a first amount. In a second configuration of the connecting rod, at the second end of the range, the proximal end of the connecting rod may be offset from the longitudinal axis by a second amount.

Abstract: An actuation mechanism for a medical device comprises: a rotatable member configured to rotate about a rotational axis and a spring, coupled directly or indirectly to the rotatable member. The spring is configured to move from a first configuration to a second configuration. In the first configuration, a longitudinal axis of the spring has a first angle with respect to a lever arm of the rotatable member. In the second configuration, a longitudinal axis of the spring has a second angle with respect to the lever arm of the rotatable member.

Abstract: A linkage assembly for a medical device may comprise: a rotatable member configured to rotate about a rotation axis; a piston; and a connecting rod rotatably connected to the rotatable member and the piston and movable along a range. A first end of the range may correspond to an initial position of a distal member movable by the linkage assembly, and a second end of the range may correspond to a final position of a distal member. In a first configuration of the connecting rod, at the first end of the range, a proximal end of the connecting rod may be offset from a longitudinal axis by a first amount, wherein the longitudinal axis is perpendicular to the rotation axis; In a second configuration of the connecting rod, at the second end of the range, the proximal end of the connecting rod may be offset from the longitudinal axis by a second amount. The second amount may be less than two-thirds of the first amount.

Abstract: A distal tip of a medical device may comprise: a housing and an elevator. The elevator may include an opening extending from a first surface of the elevator to a second surface of the elevator. The opening may be configured to receive an accessory medical device therethrough, such that the accessory medical device extends distally of a distalmost end of the housing.

Abstract: A bone fixation clamp includes a first arcuate clamp member conforming to a shape of a bone and extending between a first connection end and a first free end, a second arcuate clamp member conforming to a shape of the bone, a second connection end of the second clamp member being pivotally attached to the first clamp member, the second clamp member extending between the second connection end and a second free end and a driving member received in the first clamp member passing out of the first clamp member to abut an abutment portion of the second member so that, as the driving member is extended further out of the first member, the driving member pivots the second clamp member relative to the first clamp member to draw the first and second free ends toward one another to apply a radially compressive force to the bone.

Abstract: Medical devices and related methods are described. The medical device may include a shaft, a handle housing a proximal portion of the shaft, and a lock having a first configuration and a second configuration. In the first configuration of the lock, the shaft may be rotatable about a longitudinal axis of the shaft relative to the handle, and, in the second configuration of the lock, the shaft may be stationary relative to the handle.

Abstract: Medical devices and related methods are described. The medical device may include a shaft, a handle housing a proximal portion of the shaft, and a lock having a first configuration and a second configuration. In the first configuration of the lock, the shaft may be rotatable about a longitudinal axis of the shaft relative to the handle, and, in the second configuration of the lock, the shaft may be stationary relative to the handle.

Abstract: A medical device, comprising a shaft, wherein the shaft has a corrugated body, and wherein the corrugated body includes a plurality of hoops extending around a circumference of the shaft, a plurality of indentations, wherein the plurality of indentations extend around a portion of the circumference of the shaft and define a reduced-diameter portion of the shaft relative to a diameter of the plurality of hoops, and wherein each of the plurality of hoops is spaced apart from an adjacent hoop of the plurality of hoops by at least one of the plurality of indentations, and a plurality of nodes, wherein each node extends between and connects adjacent hoops of the plurality of hoops, and wherein each of the plurality of nodes is radially offset relative to adjacent nodes along a longitudinal axis of the shaft.

Abstract: An articulation joint includes proximal links, distal links, and intermediate links connecting the proximal and distal links. The articulation joint has a straight configuration along a straight longitudinal axis, a first bent configuration when the articulation joint bends toward a first side of the longitudinal axis, and a second bent configuration when the articulation joint bends toward a second side of the longitudinal axis, opposite to the first side. When the articulation joint is in the straight configuration, a first gap is defined at the first side between adjacent proximal links, and the adjacent proximal links contact each other at the second side, a second gap is defined at each of the first side and the second side between adjacent distal links, and a third gap is defined at the first side between adjacent intermediate links, and adjacent intermediate links contact each other at the second side.

Abstract: A medical device including a handle, a shaft extending from the handle, first and second articulation wires coupled to the handle, and an articulation member at a distal end of the shaft, wherein the articulation member includes a central longitudinal axis within a first bending plane. The first and second articulation wires lie within the first bending plane, the articulation member includes a plurality of links arranged about the central longitudinal axis, a first link of the plurality of links is attached to an adjacent, second link of the plurality of links via a first pair of hinges, and a first hinge from the first pair of hinges is arranged on a first side the first bending plane, and a second hinge from the first pair of hinges is located on a second side of the bending plane, opposite the first side.

Abstract: An articulation joint includes proximal links, distal links, and intermediate links connecting the proximal and distal links. The articulation joint has a straight configuration along a straight longitudinal axis, a first bent configuration when the articulation joint bends toward a first side of the longitudinal axis, and a second bent configuration when the articulation joint bends toward a second side of the longitudinal axis, opposite to the first side. When the articulation joint is in the straight configuration, a first gap is defined at the first side between adjacent proximal links, and the adjacent proximal links contact each other at the second side, a second gap is defined at each of the first side and the second side between adjacent distal links, and a third gap is defined at the first side between adjacent intermediate links, and adjacent intermediate links contact each other at the second side.

Abstract: A medical device includes a handle including an actuating device, a shaft extending from the handle and having a longitudinal axis, a cam rotatably connected to the handle, wherein the cam includes a first section and a second section, and wherein a distance between a radially outer surface of the first section and a center of the cam is different from a distance between a radially outer surface of the second section and the center of the cam; and an actuation wire extending from the cam to a distal end of the shaft. Rotation of the actuating device rotates the cam, causing the actuating wire to wrap around the first section and the second section to deflect the distal end of the shaft.

Abstract: A medical device includes a handle including an axle, a device shaft extending from the handle to a distal end, and a control device. The control device is coupled to the handle, and the control device includes a knob. The knob is rotatable relative to the handle. The control device also includes a control shaft extending from the knob, at least one spring clutch including two legs, and a spool. The spool is rotatable relative to the axle. The control device also includes one or more wires coupled to the spool. Rotation of the knob is configured to rotate the control shaft, causing the at least one spring clutch to loosen, the spool to rotate, and the one or more wires to move.

Abstract: A bone fixation clamp includes a first arcuate clamp member conforming to a shape of a bone and extending between a first connection end and a first free end, a second arcuate clamp member conforming to a shape of the bone, a second connection end of the second clamp member being pivotally attached to the first clamp member, the second clamp member extending between the second connection end and a second free end and a driving member received in the first clamp member passing out of the first clamp member to abut an abutment portion of the second member so that, as the driving member is extended further out of the first member, the driving member pivots the second clamp member relative to the first clamp member to draw the first and second free ends toward one another to apply a radially compressive force to the bone.

Abstract: A bone fixation clamp includes a first arcuate clamp member conforming to a shape of a bone and extending between a first connection end and a first free end, a second arcuate clamp member conforming to a shape of the bone, a second connection end of the second clamp member being pivotally attached to the first clamp member, the second clamp member extending between the second connection end and a second free end and a driving member received in the first clamp member passing out of the first clamp member to abut an abutment portion of the second member so that, as the driving member is extended further out of the first member, the driving member pivots the second clamp member relative to the first clamp member to draw the first and second free ends toward one another to apply a radially compressive force to the bone.

Abstract: A linkage assembly for a medical device may comprise: a rotatable member configured to rotate about a rotation axis; a piston; and a connecting rod rotatably connected to the rotatable member and the piston and movable along a range. A first end of the range may correspond to an initial position of a distal member movable by the linkage assembly, and a second end of the range may correspond to a final position of a distal member. In a first configuration of the connecting rod, at the first end of the range, a proximal end of the connecting rod may be offset from a longitudinal axis by a first amount, wherein the longitudinal axis is perpendicular to the rotation axis; In a second configuration of the connecting rod, at the second end of the range, the proximal end of the connecting rod may be offset from the longitudinal axis by a second amount. The second amount may be less than two-thirds of the first amount.

Abstract: A system is provided for inserting and securing, through a suprapatellar region of a leg, a nail into a medullary canal of a bone. The system can include a flexible sleeve configured to be partially inserted in the leg. The flexible sleeve can define a leading end and a trailing end spaced apart from the leading end along a first axis. The flexible sleeve can define a first cannulation that extends along the first axis between the leading and trailing ends. The first cannulation can be sized to receive therethrough at least the intramedullary nail. The system can further include a retaining member configured support at least a portion of the flexible sleeve. The retaining member can be configured to position the flexible sleeve through the suprapatellar region of the leg such that the flexible sleeve leading end is aligned with the proximal end of the bone. The intramedullary nail can be insertable through the flexible sleeve and into the medullary canal.