Pulse device for creating a simulated feelable heart's pulse to train feeling and recognition of pulse

• US 6,007,342 A
• Filed: 12/30/1997
• Issued: 12/28/1999
• Est. Priority Date: 07/05/1995
• Status: Expired due to Fees

• Current Assignee: Asmund S Laerdal A/S
• Original Assignee: Asmund S Laerdal A/S
• Inventors: Tj.o slashed.lsen, .O slashed.yvind
• Primary Examiner(s): Cheng, Joe H.
• Application Number:
  US08/981,468
• Time in Patent Office: 728 Days
• Field of Search: 434/262, 434/307 R, 434/265, 434/266, 434/365, 623/3, 600/16, 600/28, 446/397, 446/484, 446/295, 446/369, 601/78, 395/500, 395/500.25
• US Class Current: 434/265
• CPC Class Codes: G09B 23/288 for artificial respiration or heart massage

Abstract

A device for simulated heart'"'"'s pulse in manikins and apparatus used in connection with training how to feel and recognize pulse, comprising an electric linear motor (1), the armature (2) thereof being put into pulsating movements which can be felt upon a touch, an armature coil (3) being supplied with an electric signal from a pulse generator adapted to be started and stopped by means of a signal from a detector coil (5), the inductance of the detector coil (5) being changed when the detector coil (5) is passed in over a ferrite core (6). The armature (2) is assigned a spring, the force thereof being sufficient to bring the armature (2) to the starting position when the external force from the touch ceases.

Claims

1. A device for simulated heart'"'"'s pulse in manikins and apparatus used in connection with training how to feel and recognize heart'"'"'s pulse, where an electric linear motor (1) comprising a stator (4) and an armature (2) gives a pulse body feelable movements in that a pulse generator (12) gives pulsating electric signals to the linear motor (1), characterized in that the armature (2) is assigned a positional sensor adapted to react on the armature'"'"'s (2) position and activate the pulse generator (12) when the linear motor'"'"'s (1) armature (2) is displaced from an end position, the starting position.

2. A device as set forth in claim 1, characterized in that the armature (2) of the linear motor (1) is assigned a biased spring (18) adapted to maintain the armature (2) in the starting position, and where the force from the spring (18) is larger than the oppositely directed force which can be offered by the linear motor (1) when the armature (2) takes the starting position.

3. A device as set forth in claim 2, characterized in that the armature (2) when occupying the starting position, is substantially out of the magnetic field of the stator (4).

4. A device as set forth in claim 1, characterized in that the armature (2) when occupying the starting position, is substantially out of the magnetic field of the stator (4).

5. A device as set forth in claim 1, characterized in that the armature (2) is assigned a detector coil (5) adapted to be moved in over and surround a ferrite core (6) when the armature (2) is displaced from a starting position;

and where the detector coil (5) is coupled to a level detector (11) in the controller, and where the level detector (11) is adapted to give activation signal to the pulse generator (12) of the controller when the inductance of the detector coil (5) reaches a predetermined value, the detector coil (5) being continuously exited by an oscillator (8).

6. A device as set forth in claim 1, characterized in that the linear motor (1) is mounted within a housing (27) provided with a ventilation aperture (32) at the end of a channel (33) passing the magnetic field of the stator (4).