Assisted lifting devices for roll-in-cots
Roll-in cots having lift assist mechanisms and lift assist mechanisms are disclosed. According to one embodiment, a lift assist mechanism includes a force application member having an actuation element, an actuation mechanism comprising a first grasp handle and a second grasp handle, and a force transmission assembly. The force transmission assembly includes a first keyway plate that is coupled to the first grasp handle, a second keyway plate that is coupled to the second grasp handle, and an actuation pin that extends through both the first keyway plate and the second keyway plate, where the actuation pin selectively applies a force to the actuation element of the force application member.
1. A roll-in cot comprising:
a support frame;
a stretcher coupled to the support frame, the stretcher comprising a torso portion coupled to a hips portion; and
a lift assist mechanism coupled to the support frame and the torso portion of the stretcher, the lift assist mechanism comprising:
a force application member comprising an actuation element;
an actuation mechanism comprising a first grasp handle and a second grasp handle;
a force transmission assembly coupling the first grasp handle and the second grasp handle to the actuation element of the force application member for selective engagement with the actuation element, the force transmission assembly comprising a first keyway plate coupled to the first grasp handle, a second keyway plate coupled to the second grasp handle, and an actuation pin that extends through both the first keyway plate and second keyway plate and selectively applies force to the actuation element of the force application member when selected by one or both of the first keyway plate and the second keyway plate; and
the first keyway plate and the second keyway plate are both repositionable between a relaxed position and an actuation position.
2. The roll-in cot of claim 1 , wherein the first keyway plate is coupled to the first grasp handle by a first linkage, and the second keyway plate is coupled to the second grasp handle by a second linkage.
3. The roll-in cot of claim 1 , wherein each of the first keyway plate and the second keyway plate comprise a keyway having an actuation portion and a relief portion, and the first keyway plate and the second keyway plate are located in an actuation position when the actuation pin is positioned proximate to the actuation portion of the keyway.
4. The roll-in cot of claim 3 , wherein the actuation pin applies a force to the actuation element of the force application member when one or both of the first keyway plate or the second keyway plate is located in the actuation position.
5. The roll-in cot of claim 3 , wherein a portion of the first keyway plate that contacts the actuation pin as the first keyway plate translates between the relaxed position and the actuation position is transverse to the direction of translation of the first keyway plate.
6. The roll-in cot of claim 1 , further comprising a return mechanism that applies a biasing force to the first keyway plate in a direction corresponding to returning the first keyway plate to the relaxed position.
7. The roll-in cot of claim 1 , wherein the force application member is a pressurized gas cylinder.