An excavator tool attaching mechanism includes a housing having a pair of housing walls; a fixed engagement member for engaging with a first coupling pin of an excavator tool; a moveable engagement mechanism for engaging with a second coupling pin of the excavator tool; and a safety mechanism moveable between a locked and an unlocked configuration. The moveable engagement mechanism includes an engaging element moveable between a first position for releasing the excavator tool and a second position for engagement with the second coupling pin. The safety mechanism is automatically moved from the unlocked to the locked configuration by movement of the engaging element from the first to the second position, preventing movement of the engaging element between the second and first position. The engaging element is moveable to the second position when the moveable engagement mechanism engages with the second coupling pin.

A surgical instrument includes a proximal control mechanism having an instrument control surface. The instrument control surface has two openings through which two resilient latch arms can be inserted to engage a fixed latch structure contained within the proximal control mechanism. The fixed latch structure provides two lead-in ramps that force the resilient latch arms onto locking surfaces. The resilient latch arms are contained entirely within the proximal control mechanism when engaged. Inward forces can be applied to two buttons to apply an outward force on the resilient latch arms and release them from the locking surfaces of the fixed latch structure. Each of the two buttons is accessible from one of two opposite outside surfaces of the proximal control mechanism.

A humidifier includes a tub configured to hold a supply of water. The tub includes a tub lid and a tub base adapted to be coupled to the tub lid. The tub further includes a base plate formed of a heat conducting material and adapted to be coupled to the tub base and a seal positioned between the base plate and the tub base. The tub also includes a retaining mechanism with at least one projection that projects from the tub base and is configured to force the base plate against the seal so that the seal is secured against the tub base.

An attachment of a work machine includes first and second attachment bodies connectable to each other quickly and easily. The first attachment body includes first side plates including first projecting portions formed with notches, and the second attachment body includes second side plates including second projecting portions and a fitting pin inserted through the second projecting portions. The interval between the first side plates is larger than the interval between the second side plates. The first and second attachment bodies are interconnected while the first projecting portions are disposed outside the second projecting portions, and the parts of the fitting pin protruding outward beyond the second projecting portions are fitted with the notches.

A surgical instrument includes a proximal control mechanism. The proximal control mechanism has an opening through which a resilient latch arm can be inserted to engage a locking surface of a fixed latch structure contained within the proximal control mechanism. The resilient latch arm is contained entirely within the proximal control mechanism when engaged. A release channel extends from an outer periphery of the proximal control mechanism to the resilient latch arm entrance opening. The release channel provides a passage through which a release tool can be inserted to engage the resilient latch arm and provides a fulcrum for the release tool where the release channel is joined to the outer periphery of the proximal control mechanism. The surgical instrument can be released by prying the resilient latch arm away from the locking surface of the fixed latch structure with the release tool used as a lever on the fulcrum.

A CPR device having a base member configured to be placed underneath a patient, a chest compression mechanism configured to deliver CPR chest compressions to a patient, a support leg configured to support the chest compression mechanism at a distance from the base member, a clamp mechanism coupled to the support leg, and a release mechanism coupled to the support leg and the clamp mechanism. The clamp mechanism may be configured to attach the support leg to a lock component of the base member in a latch-closed configuration and to release the support leg from the lock component in a latch-open configuration. The clamp mechanism may further be configured to transition from the latch-closed configuration to the latch-open configuration when the lock component of the base member impinges upon an external portion of the clamp mechanism.

A surgical instrument includes a proximal control mechanism having an instrument control surface. The instrument control surface has two openings through which two resilient latch arms can be inserted to engage a fixed latch structure contained within the proximal control mechanism. The fixed latch structure provides two lead-in ramps that force the resilient latch arms onto locking surfaces. The resilient latch arms are contained entirely within the proximal control mechanism when engaged. Inward forces can be applied to two buttons to apply an outward force on the resilient latch arms and release them from the locking surfaces of the fixed latch structure. Each of the two buttons is accessible from one of two opposite outside surfaces of the proximal control mechanism.

An instrument carriage provides control of a surgical instrument coupled to the instrument carriage. The instrument carriage includes a control surface that is coupled to the surgical instrument to provide the control. A detection pin having a first distal end that extends from the control surface is coupled to the instrument carriage. A sensor fixed relative to the instrument carriage detects a position of the detection pin. A carriage controller coupled to the sensor, provides a signal that indicates at least a first state and a second state responsive to a distance between the distal end of the detection pin and the control surface. The signal may indicate if an instrument sterile adapter is coupled to the control surface of the instrument carriage. A third state of the signal may indicate if a surgical instrument is coupled to the instrument sterile adapter.

A medical instrument comprises an instrument control surface configured to mate with an instrument sterile adapter to receive input drive forces through the sterile adapter to control actuation of the surgical instrument, the instrument control surface comprising a first opening defined in the instrument control surface. A latch structure of the instrument comprises a locking surface configured to engage a latch arm in response to the latch arm being received in the opening, wherein in an engaged state of the latch arm with the locking surface the medical instrument is attached to the instrument sterile adapter and the latch structure prevents movement of the latch arm in a first direction. A latch release is moveable in the engaged state of the latch arm with the locking surface to exert a force causing movement of the latch arm in a second direction to disengage the latch arm from the locking surface.

An instrument sterile adapter for coupling a surgical instrument and an instrument carriage includes an adapter control surface that extends control features of a control surface of the instrument carriage and receives an instrument control surface of the surgical instrument. A shaft receiving slot is positioned in the adapter control surface to receive an elongate tube of the surgical instrument when the adapter control surface receives the instrument control surface of the surgical instrument. The elongate tube may couple a proximal control mechanism of the surgical instrument to an end effector. The instrument sterile adapter may include a convex curved surface substantially perpendicular to and facing the adapter control surface to receive a corresponding concave curved surface on the instrument control surface. A bullet portion on the convex curved surface may engage a bullet receiving feature in the corresponding concave curved surface on the instrument control surface.