Apparatus for training for the performance of a medical procedure

• US 5,873,732 A
• Filed: 09/26/1997
• Issued: 02/23/1999
• Est. Priority Date: 09/26/1997
• Status: Expired due to Term

• Current Assignee: Realsim Systems LLC
• Original Assignee: Harrith M. Hasson
• Inventors: Hasson, Harrith M.
• Primary Examiner(s): Ricci, John A.
• Application Number:
  US08/938,636
• Time in Patent Office: 515 Days
• Field of Search: 434/262, 434/267, 434/272
• US Class Current: 434/262
• CPC Class Codes: G09B 23/286 for scanning or photography techniques, e.g. X-rays, ultrasonics

Abstract

A training apparatus has a frame defining a working space simulating a body cavity and an access opening in communication with the working space to allow introduction of an instrument to the working space from externally of the working space. A first model is provided upon which a procedure can be performed with an instrument to at least one of a) simulate a medical procedure and b) practice a movement that may be encountered in the performance of a medical procedure The first model and frame cooperate in such a manner that the first model is allowed to be selectively maintained on the frame in a plurality of different positions relative to the access opening.

Claims

1. A training apparatus comprising:

a frame defining a working space simulating a body cavity,

the frame having an access opening in communication with the working space to allow introduction of an instrument to the working space from externally of the working space;

a first model upon which a procedure can be performed with an instrument to at least one of a) simulate a medical procedure and b) practice a movement that may be encountered in the performance of a medical procedure; and

cooperating surfaces on the first model and frame which guide movement of the first model in a predetermined path relative to the frame to allow the first model to be selectively repositioned relative to the access opening in the frame.

2. The training apparatus according to claim 1 wherein the frame comprises an elongate rail defining the cooperating surface on the frame which engages the cooperating surface on the first model and guides the first model in a substantially straight line in the predetermined path.

3. The training apparatus according to claim 1 further comprising a locking mechanism for selectively releasably fixing the first model in a plurality of different positions relative to the frame.

4. The training apparatus according to claim 1 wherein the cooperating surfaces on the frame comprises surfaces which can be selectively engaged with the cooperating surface on the first model to selectively guide the first model in first and second independent paths relative to the frame.

5. The training apparatus according to claim 1 wherein the frame comprises three rails each having a surface to engage the cooperating surface on the first model and guide the first model selectively in one of three different predetermined paths, with each of the predetermined paths being substantially straight, and the three predetermined paths are substantially parallel to each other.

6. The training apparatus according to claim 1 wherein the first model comprises a first base, a first platform with an exposed surface, and a resilient element between the first base and first platform which deforms to allow the platform to universally reposition relative to the base, and the cooperating surface on the first model is defined by the base.

7. The training apparatus according to claim 6 wherein the first platform is removably connected to the first base and in combination with a second base having a different configuration than the first base to which the first platform is capable of being removably connected.

8. The training apparatus according to claim 1 wherein the first model comprises a first base and a first platform operably connected to the first base for selective guided movement relative to the first base.

9. The training apparatus according to claim 8 wherein at least a part of the first platform is connected to the first base for pivoting movement relative to the first base around a first axis.

10. The training apparatus according to claim 1 wherein the first model comprises a first base, a first platform on the first base, and a practice system on the first platform.

11. The training apparatus according to claim 10 wherein the practice system comprises a plurality of elements each having an opening with an axis and the axes of a plurality of the openings are non-coincident.

12. The training apparatus according to claim 11 wherein the axes of a plurality of the openings are coincident.

13. The training apparatus according to claim 11 wherein a plurality of the openings are defined by a plurality of the elements which have an annular shape.

14. The training apparatus according to claim 13 wherein a plurality of the elements that have an annular shape are stacked, one on the other to define a stack subassembly.

15. The training apparatus according to claim 14 wherein there are a plurality of stack subassemblies on the first platform.

16. The training apparatus according to claim 10 wherein the practice system on the first platform comprises a cantilevered wire element on the first platform and having a body with a free end and an annular element having an opening to receive the free end of the body and at least a part of the body.

17. The training apparatus according to claim 16 wherein the at least part of the body is non-straight.

18. The training apparatus according to claim 16 wherein the at least part of the body is curved.

19. The training apparatus according to claim 16 wherein the at least part of the body has multiple curves formed thereon.

20. The training apparatus according to claim 10 wherein the practice system comprises a flexible tube and a support for maintaining at least a part of the flexible tube in spaced relationship to the first platform.

21. The training apparatus according to claim 10 wherein the practice system comprises a flexible element and first and second clamps which engage the flexible element to maintain at least part of the flexible element spaced from the first platform.

22. The training apparatus according to claim 21 wherein the flexible element is in a tensioned state between the first and second clamps.

23. The training apparatus according to claim 21 wherein the practice system comprises third and fourth clamps which each engage the flexible element.

24. The training apparatus according to claim 21 wherein the first clamp in an operative state is spaced from the first platform and the first clamp is attached to the platform so that the spacing between the first clamp and the first platform can be selectively varied.

25. The training apparatus according to claim 21 wherein there is a clamp on the frame that is connected to the frame independently of the first model for engaging the flexible element.

26. The training apparatus according to claim 10 wherein the practice system comprises a piece of fruit on the platform.

27. The training apparatus according to claim 10 wherein the practice system comprises a peg board and a plurality of discrete elements which can be placed in selected locations on the peg board.

28. The training apparatus according to claim 1 further comprising a post projecting in cantilever fashion from the frame to facilitate tying of knots in an elongate flexible element.

29. The training apparatus according to claim 1 further comprising a camera mounted to the frame for photographing the working space.

30. The training apparatus according to claim 29 wherein there is a mount structure on the frame for guiding movement of the camera in a predetermined manner relative to the frame.

31. The training apparatus according to claim 1 further comprising a resettable timer on the frame.

32. The training apparatus according to claim 1 wherein the access opening on the frame is at least partially covered by a flexible membrane to simulate live tissue.

33. The training apparatus according to claim 32 further comprising a medical instrument which is directed through the flexible membrane into the working space.

34. The training apparatus according to claim 32 further comprising a laparoscopic camera which is directed through the flexible membrane into the working space.

35. The training apparatus according to claim 34 further comprising a monitor for projecting a visible image of the working space generated by the laparoscopic camera.

36. The training apparatus according to claim 1 wherein the frame defines a ledge at least partially around the access opening and further comprising a framed membrane which is removably supported on the ledge to at least partially cover the access opening.

37. The training apparatus according to claim 1 wherein the first model comprises a first base, a first platform and a first resilient element acting between the first base and first platform.

38. The training apparatus according to claim 37 wherein the first resilient element comprises foam.

39. The training apparatus according to claim 38 wherein the first resilient element is removably attached to at least one of the first base and the first platform.

40. The training apparatus according to claim 39 wherein the first resilient element is removably attached to the at least one of the first base and the first platform through a hook and loop-type fastener.

41. The training apparatus according to claim 38 wherein the first resilient element is removably attached to each of the first base and the first platform.

42. The training apparatus according to claim 41 wherein the first resilient element maintains a first predetermined spacing between the first base and first platform and further comprising a second resilient element which acts between the first base and first platform with the first resilient element removed from both the first platform and first base, and the second resilient element has a different configuration than the first resilient element to maintain a second predetermined spacing between the first base and first platform that is different than the first predetermined spacing.

43. The training apparatus according to claim 1 further comprising a source of illumination within the working space.