Medical training apparatus

• US 7,997,903 B2
• Filed: 01/22/2003
• Issued: 08/16/2011
• Est. Priority Date: 01/22/2003
• Status: Expired due to Fees

• Current Assignee: Realsim Systems LLC
• Original Assignee: Realsim Systems LLC
• Inventors: Hasson, Harrith M., Yarin, Paul
• Primary Examiner(s): Thai; Xuan M
• Assistant Examiner(s): MUSSELMAN, TIMOTHY A
• Application Number:
  US10/349,420
• Publication Number:
  US 20040142314A1
• Time in Patent Office: 3,128 Days
• Field of Search: 434262-275, 500/104, 993/237, 993/238, 198/394
• US Class Current: 434/262
• CPC Class Codes: G09B 23/285 for injections, endoscopy, bronchoscopy, sigmoidscopy, insertion of contraceptive devices or enemas

Abstract

A medical training apparatus comprises a frame defining a work space simulating a body cavity and having an access opening to allow introduction of a medical instrument to the working space from externally of the working space. A sensor platform is rotationally mounted in the working space for rotating the platform to select angular positions for performing a series of simulated medical procedures. A plurality of modules are mounted around a perimeter of the platform. Each module comprises a different model upon which an associated medical procedure can be performed with a medical instrument. A plurality of sensors are each operatively associated with one of the modules for sensing progress of the associated medical procedure. A control unit is coupled to the sensors for monitoring progress of the medical procedures and providing an indication of status of the medical procedures.

Claims

1. A medical training apparatus comprising:

a frame defining a working space simulating a body cavity and having an access opening to allow introduction of a medical instrument to the working space from externally of the working space;

a model mounted in the working space upon which a procedure corresponding to a medical procedure can be performed with a medical instrument to thereby change a state of the model;

a sensor operatively associated with the model for sensing progress of the procedure; and

a control unit coupled to the sensor for monitoring progress of the procedure and providing an indication of status of the procedure resulting from a change of state of the model caused by the medical instrument,

wherein the model comprises a peg board model comprising a plate having a plurality of openings and a plurality of pegs for insertion in the openings and the sensor senses presence or absence of a peg in each opening.

2. The medical training apparatus of claim 1 wherein the sensor comprises a plurality of photointerrupters.

3. A medical training apparatus comprising:

a frame defining a working space simulating a body cavity and having an access opening to allow introduction of a medical instrument to the working space from externally of the working space;

a rotary platform rotationally mounted in the working space for rotating the platform to select angular positions for performing a series of simulated medical procedures;

a plurality of modules mounted around a perimeter of the rotary platform, each module comprising a different discrete model upon which a movement commonly carried out during a medical procedure can be performed by using a medical instrument to perform a specific task that changes the model in a predetermined manner;

a plurality of sensors each operatively associated with one of the modules for sensing progress of the associated, simulated medical procedure by sensing changes to the associated model resulting from performance or attempted performance of the associated task and generating signals as an incident of the associated model changing; and

a control unit coupled to the sensors for monitoring progress of performance of the task by receiving and processing the signals to thereby provide a measured and calculated, quantitative indication of status of performance of the task relating to at least two of;

a) completion time;

b) percent of completion; and

c) errors by deviation from the predetermined manner of changing the model.

4. The medical training apparatus of claim 3 wherein one of the models comprises a ring model comprising a plate having a conductive post spaced from a bent wire and a conductive rings to be received on the wire and the associated sensor senses presence or absence of the ring on the wire.

5. The medical training apparatus of claim 4 wherein the associated sensor measures resistance between the post and the wire.

6. The medical training apparatus of claim 4 wherein the conductive rings comprise conductive rubber O-rings.

7. The medical training apparatus of claim 3 wherein one of the models comprises a canulation model comprising a plate supporting a tube for receiving an elongate element and the associated sensor senses presence or absence of the elongate element in the tube.

8. The medical training apparatus of claim 7 wherein the associated sensor comprises an inductive winding surrounding the tube and the control unit senses changes in inductance.

9. The medical training apparatus of claim 3 wherein one of the models comprises a knot tying model comprising a base supporting a tubular elements and the associated sensor comprises a coaxial cable in the tubular element having a conductive foam insulator and the control unit measures conductivity across the coaxial cable.

10. The medical training apparatus of claim 3 wherein one of the models comprises a knot integrity model comprising first and second webs supported relative to a base and the associated sensor comprises means for moving the webs relative to one another and detecting displacement between the webs.

11. The medical training apparatus of claim 10 wherein the first plate is fixed and the associated sensor comprises a servo motor operatively coupled to the second web for moving the second web relative to the first web.

12. The medical training apparatus of claim 3 wherein the control unit additionally comprises a video camera for photographing the working space and a video monitor displaying video from the camera with an overlay indicating status of the medical procedures as generated through the sensor separately from the video camera and using the sensor signal.

13. The medical training apparatus of claim 3 wherein the control unit includes actuators for manually initiating the simulated medical procedures and visual indicators for indicating status of the medical procedures.

14. The medical training apparatus of claim 3 wherein the control unit further comprises a programmed processing system for logging results of simulated medical procedures.

15. The medical training apparatus of claim 3 wherein the rotary platform comprises a potentiometer mounted to a base and a carousel mounted to the potentiometer so that the carousel is rotational relative to the base and the potentiometer is electrically connected to the control unit to detect angular position.

16. The medical training apparatus of claim 15 wherein the carousel supports the modules and a circuit board connecting the sensors.

17. The medical training apparatus according to claim 3 wherein the calculated quantitative indicator of status is a numerical score.

18. A medical training apparatus comprising a frame defining a working space simulating a body cavity and having an access opening to allow introduction of a medical instrument to the working space from externally of the working space;

a rotary platform rotationally mounted in the working space for rotating the platform to select angular positions for performing a series of simulated medical procedures;

a plurality of modules mounted around a perimeter of the rotary platform, each module comprising a different model upon which an associated medical procedure can be performed with a medical instrument;

a plurality of sensors each operatively associated with one of the modules for sensing progress of the associated medical procedure; and

a control unit coupled to the sensors for monitoring progress of the medical procedures and providing a measured quantitative indication of status of the medical procedures relating to at least one of;

a) completion time;

b) percent of completion; and

c) errors,

wherein one of the models comprises a peg board model comprising a plate having a plurality of openings and a plurality of pegs for insertion in the openings and the associated sensor senses presence or absence of a peg in each opening.

19. The medical training apparatus of claim 18 wherein the associated sensor comprises a plurality of photointerrupters.