93284 results about "Drive shaft" patented technology

An electro-mechanical surgical device includes: a housing; an elongated shaft extending from the housing, a distal end of the elongated shaft being detachably coupleable to a surgical instrument; at least two axially rotatable drive shafts disposed within the elongated shaft, a distal end of each of the drive shafts being configured to couple with the surgical instrument; a steering cable arrangement, the steering cable arrangement being configured to steer the distal end of the elongated shaft; and a motor system disposed within the housing, the motor system being configured to drive the drive shafts and the steering cable arrangement. A control system may be provided for controlling the motor system. A remote control unit may also be provided for controlling the motor system via the control system. Sensors, such as optical or Hall-effect devices, may be provided for determining the position of the elements of the surgical instrument based on the detected rotation of the drive shafts. A memory unit stores a plurality of operating programs or algorithms, each corresponding to a type of surgical instrument attachable to the electro-mechanical surgical device. The control system reads or selects from the plurality of operating programs or algorithms, the operating program or algorithm corresponding to the type of surgical instrument attached to the electro-mechanical surgical device.

An adapter assembly for selectively interconnecting a surgical end effector including at least one axially translatable drive member and a powered actuator device including at least one rotatable drive shaft is provided. The adapter assembly includes an actuation shaft configured to convert rotation of a first drive shaft of the powered actuator device into an axial translation of a first drive member of the surgical end effector. The adapter assembly further includes an elongate tube configured to convert rotation of a second drive shaft of the powered actuator device into an axial translation of a second drive member of the surgical end effector. The actuation shaft is disposed within the elongate tube, and the actuation shaft and the elongate tube translate axially independent of each other.

Adapter assemblies are provided for selectively interconnecting a surgical end effector that is configured to perform at least a pair of functions and a surgical device that is configured to actuate the end effector, wherein the end effector includes a first axially translatable drive member and a second axially translatable drive member, and wherein the surgical device includes a first rotatable drive shaft and a second rotatable drive shaft.

Mechanisms, assemblies, systems, tools, and methods incorporating the use of an offset drive shaft within an independently rotating member are provided. An example mechanism includes a base and a main shaft mounted to rotate relative to the base, a first drive shaft mounted inside the main shaft, and a first drive feature engaged with the first drive shaft. The main shaft includes a proximal end, a distal end, and a main shaft rotational axis defined therebetween. The first drive shaft is offset from the main shaft rotational axis. A first drive feature rotational axis is defined for the first drive feature and is fixed relative to the base as the main shaft rotates. The first drive feature rotates the first drive shaft.

A shaft being, e.g., flexible, that includes an elongated outer sheath, at least one drive shaft disposed within the outer sheath and a ring non-rotatably mounted on the at least one rotatable drive shaft and at least one light source mounted within the shaft, such that, upon rotation of the at least one rotatable drive shaft, the ring alternately blocks and allows light from the light source to be detected. The shaft may also include a moisture sensor disposed within the outer sheath of the shaft and configured to detect moisture within the outer sheath. The shaft may include couplings that connect a distal end of the outer sheath to a surgical attachment and a proximal end of the outer sheath to a remote power console.

Sealing assemblies and methods are disclosed for sealing a surgical instrument having an internal drive shaft subject to lateral displacement. A sealing assembly includes a rigid portion shaped to interface with an instrument shaft of the surgical instrument. A laterally oriented slot is open at a radially perimeter location and configured to receive an o-ring seal via the perimeter location. Apertures are disposed on opposing sides of the slot and open to the slot. The apertures are configured to receive the drive shaft there through and are larger than the drive shaft to accommodate lateral displacement of the drive shaft. The slot includes opposing internal sides spaced to interface with opposed axial surfaces of the o-ring seal. The seal inhibits axial transmission of an insufflated gas and / or bodily fluids while accommodating lateral displacement of the drive shaft.

A tacker for applying a rotary tack, including a drive shaft coupled to a trigger, wherein operating the trigger causes rotation of the drive shaft, an articulated applicator arm pivotally connected to the drive shaft at a pivot, the articulated applicator arm including a rotatable output shaft connected to a magazine that holds a rotary tack, and a clutch mechanism which, at initial movement of the trigger, has a first orientation that causes the articulated applicator arm to pivot about the pivot until reaching a stop, and has a second orientation wherein upon continued movement of the trigger, the clutch mechanism permits the drive shaft to rotate the output shaft and cause application of the rotary tack from the magazine.

Surgical tools having a two degree-of-freedom wrist, wrist articulation by linked tension members, mechanisms for transmitting torque through an angle, and minimally invasive surgical tools incorporating these features are disclosed. An elongate intermediate wrist member is pivotally coupled with a distal end of an instrument shaft so as to rotate about a first axis transverse to the shaft, and an end effector body is pivotally coupled with the intermediate member so as to rotate about a second axis that is transverse to the first axis. Linked tension members interact with attachment features to articulate the wrist. A torque-transmitting mechanism includes a coupling member, coupling pins, a drive shaft, and a driven shaft. The drive shaft is coupled with the driven shaft so as to control the relative orientations of the drive shaft, the coupling member, and the driven shaft.

Surgical assemblies and related methods are disclosed that provide for decoupling of instrument shaft roll and end effector actuation. A surgical assembly includes a base, an instrument shaft rotationally mounted to the base, an end effector supported at a distal end of the instrument shaft and including an actuation mechanism driven by a rotational motion, a drive shaft rotationally coupled with the actuation mechanism and configured to provide the rotational motion to the actuation mechanism, and a differential rotationally coupled to the drive shaft and receiving a first input motion and a second input motion. The differential combines the first and second input motions to generate an output motion that rotates the drive shaft. The first input motion is rotationally coupleable to an actuation source. The second input motion is coupled to rotation of the instrument shaft relative to the base.

Proposed is a planetary transmission (8) comprising an internal gear (24), a sun gear (52) and a planet carrier (10), upon which at least one planet gear (20) is supported. The planetary transmission (8) possesses a clutch apparatus with a sliding sleeve (66), which in a first shift-position enables a direct connection between one of the shafts (44) driving the planetary transmission (8) and an output shaft (12) of the planetary transmission (8). In a second shift-position, the connection of the sliding sleeve (66) enables a change in the speed of rotation between the driving shaft (44) and the output shaft (12) of the planetary transmission (8). The planet gear (20) is so supported on the planet carrier (10), that in case of a shifting from a one shift-position into a respective other shift-position, the planet gear (20) on the planet carrier (20) becomes axially slidable.