Ambulance cot and loading and unloading system

• US 10,149,791 B2
• Filed: 08/31/2016
• Issued: 12/11/2018
• Est. Priority Date: 10/02/2009
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Lambarth, Clifford Edwin, Souke, Chad Conway, Nahavandi, Kurosh, Downey, Adam Darwin, Cox, Robert Gregory
• Primary Examiner(s): Patel, Kiran B
• Application Number:
  US15/253,140
• Publication Number:
  US 20160367416A1
• Time in Patent Office: 832 Days
• Field of Search: 296 20, 296 19, 5620, 5 86161, 5162
• CPC Class Codes: A61G 1/00 Stretchers
• CPC Class Codes: A61G 1/02 with wheels
• CPC Class Codes: A61G 1/0212 2 pairs having wheels within a pair on the same position in longitudinal direction, e.g. on the same axis
• CPC Class Codes: A61G 1/0237 having at least one swivelling wheel, e.g. castors
• CPC Class Codes: A61G 1/0262 having loading wheels situated in the front during loading
• CPC Class Codes: A61G 1/0293 stretcher supports with wheels, e.g. used for stretchers without wheels stretcher supports without wheels A61G1/06
• CPC Class Codes: A61G 1/0567 folding in x-shape
• CPC Class Codes: A61G 1/06 Supports for stretchers, e.g. to be placed in or on vehicles A61G1/0293 takes precedence; supports fixed to a vehicle A61G3/02 - A61G3/08
• CPC Class Codes: A61G 2203/30 characterised by sensor means
• CPC Class Codes: A61G 2203/42 for inclination
• CPC Class Codes: A61G 2203/44 for weight
• CPC Class Codes: A61G 3/0236 by pivoting the support about a horizontal axis
• CPC Class Codes: A61G 3/0254 by moving the stretcher on a horizontal path, e.g. sliding or rolling
• CPC Class Codes: A61G 3/0272 by support protruding from the vehicle
• CPC Class Codes: A61G 3/029 by powered support
• CPC Class Codes: A61G 3/0833 using other support
• CPC Class Codes: A61G 3/0875 Securing stretchers, e.g. fastening means
• CPC Class Codes: A61G 3/0883 by preventing lateral movement, e.g. tracks
• CPC Class Codes: A61G 3/0891 by preventing longitudinal movement
• CPC Class Codes: B65G 2201/0214 Articles of special size, shape or weigh
• CPC Class Codes: B65G 2203/0283 : Position of the load carrier
• CPC Class Codes: B65G 2203/042 : Sensors
• CPC Class Codes: B65G 2812/12 : Conveyors with reciprocating means
• CPC Class Codes: B65G 2814/0302 : Central control devices
• CPC Class Codes: B65G 35/06 : comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path effecting drive at two or more points spaced along the length of an endless conveyor B65G23/32
• CPC Class Codes: B65G 67/04 : Loading land vehicles loading or unloading boats to or from land vehicles B60P3/10
• CPC Class Codes: B65G 67/24 : Unloading land vehicles

Abstract

An ambulance cot and cot loading and unloading system for an emergency vehicle comprises a cot having a head end, a base for mounting to a deck of an emergency vehicle, a track mounted for linear movement along said base, and an arm mounted for linear movement along said track from a retracted position to an extended position. The arm is and configured to engage the cot, and wherein when the track is extended along the base and the arm is extended along the track the arm is extended from the base in an extended position and is configured for lifting the cot and providing cantilevered support to the cot while in the extended position.

Claims

1. An ambulance cot and cot loading and unloading system for an emergency vehicle, the emergency vehicle having a deck, said ambulance cot and cot loading and unloading system comprising:

an ambulance cot;

a cot loading and unloading apparatus configured to mount to the deck of the emergency vehicle;

a control system having a cot-based control board, a cot-based user interface in communication with said cot-based control board, a loading and unloading apparatus-based control board, and a loading and unloading apparatus-based user interface in communication with said loading and unloading apparatus-based control board;

said cot loading and unloading apparatus including a drive mechanism, said loading and unloading apparatus-based control board configured to control said drive mechanism, and said cot-based control board being configured to control said drive mechanism to thereby allow an attendant to control said drive mechanism from said cot or said cot loading and unloading apparatus using said cot-based user interface or said loading and unloading apparatus-based user interface.

2. The ambulance cot and cot loading and unloading system according to claim 1, said cot loading and unloading apparatus further comprising an arm configured to selectively support said ambulance cot, and said drive mechanism to selectively move said arm wherein an attendant can control moving said arm from said cot or said cot loading and unloading apparatus using said cot-based user interface or said loading and unloading apparatus-based user interface.

3. The ambulance cot and cot loading and unloading system according to claim 2, wherein said arm is configured to move from a first position where said arm supports said cot outside the emergency vehicle to a second position where said cot is loaded into the emergency vehicle, and said drive mechanism configured to move said arm between said first position and said second position wherein an attendant can control moving said arm from said first position to said second position from said cot or said cot loading and unloading apparatus using said cot-based user interface or said loading and unloading apparatus-based user interface.

4. The ambulance cot and cot loading and unloading system according to claim 2, wherein said arm is configured to lift said cot, said drive mechanism configured to lift said arm to thereby lift said cot, wherein an attendant can control the lifting of said cot from said cot or said cot loading and unloading apparatus using said cot-based user interface or said loading and unloading apparatus-based user interface.

5. The ambulance cot and cot loading and unloading system according to claim 4, wherein said drive mechanism is configured to lift said arm at a selected lifting speed, and said control system being configured to control the speed of said drive mechanism to thereby control the lifting speed of said arm.

6. The ambulance cot and cot loading and unloading system according to claim 5, said control system further including a sensor, and said control system configured to control the speed of said drive mechanism based on input from said sensor to thereby move said arm based on input from said sensor.

7. The ambulance cot and cot loading and unloading system according to claim 6, wherein said sensor senses the position of said arm or the load on said arm.

8. The ambulance cot and cot loading and unloading system according to claim 1, said control system further including a sensor, and said control system configured to control said drive mechanism based on input from said sensor.

9. The ambulance cot and cot loading and unloading system according to claim 8, wherein said sensor senses the position of the arm or the load on the arm.

10. The ambulance cot and cot loading and unloading system according to claim 1, wherein said loading and unloading apparatus-based control board comprises a slave control board to said cot-based control board.

11. The ambulance cot and cot loading and unloading system according to claim 1, wherein said cot includes a head end and a foot end, and said cot-based use interface is located at or adjacent said foot end of said cot.

12. The ambulance cot and cot loading and unloading system according to claim 2, said cot loading and unloading apparatus further including a track, and said arm mounted for linear movement along said track.

13. The ambulance cot and cot loading and unloading system according to claim 1, said cot loading and unloading apparatus further including a latch for engaging said cot, and said cot-based control board configured for controlling said latch.

14. The ambulance cot and cot loading and unloading system according to claim 1, wherein

said ambulance cot includes said cot-based control board.

15. The ambulance cot and cot loading and unloading system according to claim 14, wherein said cot-based user interface is mounted at said cot.

16. The ambulance cot and cot loading and unloading system according to claim 14, wherein said control system includes a wireless communication system.

17. The ambulance cot and cot loading and unloading system according to claim 1, further comprising:

an arm configured to mount to the deck of the emergency vehicle and configured to selectively support said ambulance cot;

said drive mechanism configured to selectively move said arm; and

said control system including a sensor, and said control system configured to control said drive mechanism to thereby move said arm based on input from said sensor.

18. The ambulance cot and cot loading and unloading system according to claim 17, wherein said sensor senses the position of the arm or a load on the arm.

19. The ambulance cot and cot loading and unloading system according to claim 18, wherein said drive mechanism is configured to raise or lower said arm, and said control system configured to control said drive mechanism to raise or lower said arm based on input from said sensor.

20. The ambulance cot and cot loading and unloading system according to claim 19, wherein said sensor senses a load on said arm, when said sensor senses the presence of a load with a first magnitude on said arm said control system being configured to move said arm at a first speed, and when said sensor senses the presence of a load on said arm with a second magnitude greater than said first magnitude said control system is configured to move said arm at another speed or speeds lower than said first speed.

21. The ambulance cot and cot loading and unloading system according to claim 20, wherein the first magnitude is or approaches zero.

22. The ambulance cot and cot loading and unloading system according to claim 17, further comprising a base for mounting to the deck, and said arm mounted for linear movement along said base.

23. The ambulance cot and cot loading and unloading system according to claim 22, further comprising a track mounted for linear movement along said base, and said arm mounted for linear movement along said track.

24. The ambulance cot loading and unloading system according to claim 23, further comprising a series of latches, one of said latches being adapted to lock said track to said base and another of said latches being adapted to lock said arm to said track, and said latches being adapted to selectively disengage and engage to allow said arm to move relative to said track while said track is locked to said base but to allow said track to be unlocked from said base and instead locked to said arm so that said arm and said track move in unison along said base.