Remotely Operated Portable, Telescopic, Cantilevered Hoist for Patient on Powerchair

Presenter

Dutrenit Hervé Pierre, PhD Student Curtin University, Australia

Field of the research

This invention is a portable, telescopic patient hoist fitted onto the powerchair of a quadriplegic or elderly patient. The presentation is about the patent AU2016206312 and the possibility of remote control from mobile phone, tablets or computer.

Background of the invention:

Currently medical hoists are used with cumbersome long legs. The long, bulky legs prevent patients from carrying the hoist anywhere they go. Moreover, with the latter invention, clearance is compulsory between the ground and the object where the patient is to be set down. This restricts patients’ possibility of where and when to be hoisted off the chair. This implies that in case of commuting or travel with the chair hoisting is not possible. The other limitation is when a person wants to be hoisted into a pool or into a boat. This problem happens with the current hoists available on the market. It is impossible to be hoisted if there is no ground under where the patient needs to be lifted or set down.

Methods:

The design is made of aluminium 6061-T6, 6083 to offer yield strength of 241 MPa for a density of 2.7 . This allows a low weight design, facilitating retrofit to existing chairs without requiring upgrade to Powerchair motors. By comparison, 316 Stainless steel has a Yield strength of 310 MPa for a density of 7.9.

The telescopic poles are made of Acme Lead screws that enable a 9,000 N Load. The whole hoist and power chair compound is rated for a patient weighing up to 200 kg