Sterilizable endoscope with separable auxiliary assembly

• US 5,630,782 A
• Filed: 03/07/1995
• Issued: 05/20/1997
• Est. Priority Date: 09/01/1992
• Status: Expired due to Fees

• Current Assignee: Micro-Medical Devices, Inc.
• Original Assignee: Edwin L. Adair
• Inventors: Adair, Edwin L.
• Primary Examiner(s): FLANAGAN, BEVERLY MEINDL
• Application Number:
  US08/399,821
• Time in Patent Office: 805 Days
• Field of Search: 600/121, 600/123, 600/124, 600/125, 600/127, 600/133, 600/153, 600/156, 600/158, 600/203, 600/205, 600/186, 600/187, 600/175, 359/510
• US Class Current: 600/133
• CPC Class Codes: A61B 1/00073 with externally grooved shaft
• CPC Class Codes: A61B 1/00082 Balloons
• CPC Class Codes: A61B 1/00101 the distal tip features being detachable
• CPC Class Codes: A61B 1/00105 characterised by modular construction
• CPC Class Codes: A61B 1/00142 with means for preventing contamination, e.g. by using a sanitary sheath
• CPC Class Codes: A61B 1/00151 using everted tubes
• CPC Class Codes: A61B 1/00158 using magnetic field
• CPC Class Codes: A61B 1/00165 with light-conductive means, e.g. fibre optics A61B1/07 takes precedence
• CPC Class Codes: A61B 1/00174 characterised by the viewing angles
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: A61B 1/12 with cooling or rinsing arrangements

Abstract

An endoscope with separable auxiliary assembly is provided that includes a cylindrical shaped endoscope that is insertable within a sterile end cap with attached sterile drape, the drape being extendable over the length of the endoscope and its trailing cables thus isolating the endoscope and its trailing cables from the environment. A sterile separable channel section is provided that releasably attaches to the end cap. The separable channel section has a plurality of longitudinal channels running therethrough so that operative fluids, gases or operative instruments may be applied to the surgical site. To enable a surgeon to obtain selectable images of an operative site, a detachable viewing head may be attached to the distal end of the endoscope prior to placement of the endoscope inside the end cap.

Claims

1. An apparatus for viewing a surgical operative site and conducting operative procedures in a sterile environment such as that of an operating room, said apparatus comprising:

an endoscope including a distal capsule portion, and means for transmitting an image of the operative site disposed within said capsule;

an end cap having an inner and outer surface, proximal and distal ends, and a first mating surface formed along at least a portion of said end cap outer surface, said capsule being insertable within space defined by said inner surface of said end cap; and

a separable disposable channel section having at least one longitudinal opening for transmitting fluids or gas or for receiving an operative instrument, and further including a second mating surface formed on said separable channel section for releasable attachment of said second mating surface to said first mating surface of said end cap.

2. Apparatus, as claimed in claim 1, further including:

a sterile drape attachable to said proximal end of said end cap and extendable over said endoscope when said capsule is inserted within said end cap for shielding said endoscope from the sterile environment.

3. Apparatus, as claimed in claim 1, wherein said end cap further includes:

an optically clear window attached to said distal end of said end cap providing a sterile barrier between said capsule and the sterile environment.

4. Apparatus, as claimed in claim 1, wherein:

said endoscope is an end viewing device.

5. Apparatus, as claimed in claim 1, further including:

a viewing head having first and second ends, said first end of said viewing head releasably attachable to said capsule and said viewing head being insertable with said capsule into said end cap for providing a desired viewing field or an enhanced image of the surgical operative site.

6. Apparatus, as claimed in claim 5, wherein:

said first end of said viewing head includes threads formed along an interior edge therealong; and

said capsule includes exterior threads for releasably engaging said viewing head interior threads.

7. Apparatus, as claimed in claim 1, wherein said end cap further includes:

an optically clear window attached to said outer surface of said end cap providing a sterile barrier between said capsule and the sterile environment; and

a prism positionable adjacent said window and inside said end cap so that said endoscope is a side-viewing device.

8. Apparatus, as claimed in claim 1, wherein said separable channel section further includes:

a channel formed along said second mating surface for receiving a guide wire whereby said distal end of said end cap is steerable for manipulation of said endoscope to a desired location.

9. Apparatus, as claimed in claim 1, further including:

a flexible tube having a distal end correspondingly connected to said at least one longitudinal opening of said separable section for supplying fluid or gas or for receiving the operative instrument from a remote location, said flexible tube positionable adjacent to and exteriorly of said endoscope.

10. An apparatus, as claimed in claim 1, wherein:

one of said first and second mating surfaces comprises a longitudinal flat and a keyway forming a recessed portion integral with said flat; and

the other of said first and second mating surfaces includes a longitudinal key which is engageable with said keyway.

11. Apparatus, as claimed in claim 1, wherein:

said separable disposable channel section and said end cap when attached form a substantially circular cross section.

12. Apparatus, as claimed in claim 1, wherein:

said separable disposable channel section and said end cap when attached form a substantially oval shaped cross section.

13. Apparatus as claimed in claim 1, wherein:

one of said first and second mating surfaces includes a ferrous material; and

the other of said first and second mating surfaces includes a magnetic strip for releasable magnetic attachment of said separable section to said end cap.

14. Apparatus, as claimed in claim 1, further including:

a retaining band positionable over said end cap and said separable disposable channel section for releasably attaching said separable disposable channel section to said end cap.

15. A method of providing endoscopic imagery of a sterile surgical operative site during an operative procedure wherein operative fluids, gases or instruments may be applied to the site from a remote location, said method comprising the steps of:

providing a sterile end cap including a first outer surface;

inserting the distal end of an endoscope into the sterile end cap;

attaching a separable channel section including a second outer surface to the first outer surface of the end cap for providing operative fluids, gases or instruments to the operative site; and

viewing the surgical operative site via the endoscope.

16. A method, as claimed in claim 15, further including the steps of:

providing a sterile drape attachable to the sterile end cap; and

extending the drape over the endoscope and trailing endoscope cables to shield the endoscope and cables from the surgical operative site.

17. A method, as claimed in claim 15, further including the steps of:

introducing the desired fluids, gases or operative instruments through the separable channel section; and

conducting the necessary operative procedure via the separable channel section.

18. A method, as claimed in claim 15, further including the steps of:

attaching a detachable viewing head to the endoscope before inserting the endoscope into the sterile end cap, the viewing head providing a desired viewing field or an enhanced image of the operative site.

19. A method, as claimed in claim 15, further including the step of:

detaching the separable channel section from the end cap; and

attaching another separable channel section to the end cap during the same operative procedure without having to remove the endoscope from the sterile end cap.

20. A device for viewing a surgical operative site and conducting operative procedures in a sterile environment such as that of an operating room, said device comprising:

an endoscope including a distal capsule portion, and means for transmitting an image of the operative site to a viewing device, said transmitting means being disposed within said capsule;

an end cap having an inner and outer surface, proximal and distal ends, and a first mating surface formed along at least a portion of said end cap outer surface, said capsule being insertable within said end cap; and

a separable disposable channel section having at least one longitudinal opening therethrough, and further including a second mating surface formed on said separable channel section for releasable attachment of said second mating surface to said first mating surface of said end cap, said separable section and said end cap when attached by said first and second mating surfaces form a predetermined cross section.

21. Apparatus, as claimed in claim 20, further including:

a sterile drape attachable to said end cap and extendable over said endoscope for shielding said endoscope from the sterile environment.

22. Apparatus, as claimed in claim 20, wherein:

said predetermined cross section is substantially circular shaped.

23. Apparatus, as claimed in claim 20, wherein:

said predetermined cross section is substantially oval shaped.

24. Apparatus, as claimed in claim 20, wherein:

said predetermined cross section is substantially oblong shaped.

25. A separable auxiliary assembly for releasable attachment to an endoscope, the separable auxiliary assembly shielding the endoscope and its trailing cables from a sterile environment such as that of an operating room, said separable auxiliary assembly enabling fluid, gas, or surgical instruments to be applied to an operative site, said separable auxiliary assembly comprising:

an end cap having an inner and outer surface, proximal and distal ends, and a first mating surface formed along at least a portion of said end cap outer surface; and

a separable disposable channel section having at least one longitudinal opening for transmitting fluids, gas, or for receiving an operative instrument, and further including a second mating surface formed on said separable channel section for releasable attachment of said second mating surface to said first mating surface of said end cap, said separable section and said end cap when attached by said first and second mating surfaces form a predetermined cross section.

26. Apparatus, as claimed in claim 25, further including:

a sterile drape attached to said end cap and extendable over the endoscope and its trailing cables for shielding the endoscope and its trailing cables from the sterile environment.

27. Apparatus, as claimed in claim 25, wherein:

said predetermined cross section is substantially circular shaped.

28. Apparatus, as claimed in claim 25, wherein:

said predetermined cross section is substantially oval shaped.

29. Apparatus, as claimed in claim 25, wherein:

said predetermined cross section is substantially oblong shaped.

30. An apparatus for viewing a surgical operative site and conducting operative procedures in a sterile environment such as that of an operating room, said apparatus comprising:

an endoscope including a distal capsule portion;

an end cap having an inner and outer surface, proximal and distal ends, and a first substantially planar mating surface formed along at least a portion of said end cap outer surface, said distal capsule portion being insertable within spaced defined by said inner surface of said end cap; and

a separable channel section including an outer surface, at least one opening for transmitting fluids or gas or for receiving an operative instrument, and further including a second substantially planar mating surface formed on at least a portion of said outer surface of said separable channel section for releasable attachment of said second mating surface to said first mating surface of said end cap.

31. An apparatus, as claimed in claim 30, further including:

a sterile drape attachable to said proximal end of said end cap and extendable over said endoscope when said distal capsule portion is inserted within said end cap.

32. An apparatus, as claimed in claim 30, wherein said end cap further includes:

an optically clear window attached to said distal end of said end cap.

33. An apparatus, as claimed in claim 30, further including:

a viewing head having first and second ends, said first end of said viewing head releasably attached to said distal capsule portion and said viewing head being insertable with said distal capsule portion into said end cap for providing a desired viewing field or an enhanced image of the surgical operative site.

34. An apparatus, as claimed in claim 30, wherein said end cap further includes:

an optically clear window attached to said outer surface of said end cap; and

a prism positionable adjacent to said window and inside said end cap so that said endoscope is a side viewing device.

35. An apparatus, as claimed in claim 30, wherein said separable channel section further includes:

a channel formed along said second mating surface for receiving a guide wire whereby said distal end of said end cap is steerable for manipulation of said endoscope to a desired location.

36. An apparatus, as claimed in claim 30, further including:

a flexible tube having a distal end connected to said at least one opening of said separable channel section, said flexible tube positionable adjacent to and exteriorly of said endoscope.

37. An apparatus, as claimed in claim 30, wherein:

one of said first and second mating surfaces includes a longitudinal flat and a key way forming a recessed portion integral with said longitudinal flat; and

the other of said first and second mating surfaces includes a longitudinal key which is engageable with said key way.

38. An apparatus, as claimed in claim 30, wherein:

said separable channel section and said end cap when attached form a substantially circular shaped cross-section.

39. An apparatus, as claimed in claim 30, wherein:

said separable channel section and said end cap when attached form a substantially oval shaped cross-section.

40. An apparatus, as claimed in claim 30, wherein:

one of said first and second mating surfaces includes a ferrous metal; and

the other of said first and second mating surfaces includes a

magnetic strip for releasable magnetic attachment of said separable channel section to said end cap.

41. An apparatus, as claimed in claim 30, further including:

a retaining band positionable over said end cap and said separable channel section for releasably attaching said separable channel section to said end cap.

42. A method of providing endoscopic imagery of a surgical operative site during an operative procedure, wherein operative fluids, gases or instruments may be applied to the site from a remote location, said method comprising the steps of:

providing a sterile end cap including a first substantially planar mating surface;

inserting a distal end of an endoscope into the sterile end cap;

attaching a separable channel section including a second substantially planar mating surface to the first substantially planar mating surface of the end cap for providing operative fluids, gases or instruments to the operative site; and

viewing the surgical operative site via the endoscope.

43. A method, as claimed in claim 42 further including the step of:

detaching the separable channel section from the end cap without removing the distal end of the endoscope from within the sterile end cap; and

attaching another separable channel section to the end cap without removing the endoscope from within the sterile end cap.

44. A separable auxiliary assembly for releasable attachment to an endoscope, the separable auxiliary assembly shielding the endoscope from a sterile environment such as that of an operating room, said separable auxiliary assembly enabling fluid, gas, or surgical instruments to be applied to an operative site, said separable auxiliary assembly comprising:

an end cap having a first substantially planar mating surface formed on at least a portion of said end cap; and

a separable channel section having an outer surface, at least one opening for transmitting fluids or gas or for receiving an operative instrument, and further including a second substantially planar mating surface formed on at least a portion of said outer surface of said separable channel section for releasable attachment of said second mating surface to said first mating surface of said end cap.

45. A separable auxiliary assembly for releasable attachment to an endoscope, the separable auxiliary assembly shielding the endoscope from a sterile environment such as that of an operating room, said separable auxiliary assembly enabling fluid, gas, or surgical instruments to be applied to an operative site, said separable auxiliary assembly comprising:

an end cap having a concave mating surface formed on at least a portion of said end cap; and

a separable channel section having at least one opening for transmitting fluids or gas or for receiving an operating instrument, and further including a convex mating surface formed on said separable channel section for releasable attachment of said convex mating surface to said concave mating surface of said end cap.

46. An apparatus for viewing a surgical operative site and conducting operative procedures, said apparatus comprising:

an endoscope including a distal capsule portion;

an end cap having an inner and outer surface, proximal and distal ends and a concave mating surface formed along at least a portion of said end cap outer surface, said distal capsule portion being insertable within space defined by said inner surface of said end cap; and

a separable channel section having at least one opening for transmitting fluids or gas or for receiving an operative instrument, and further including a convex mating surface formed on said separable channel section for releasable attachment of said convex mating surface to said concave mating surface of said end cap.

47. A method of providing endoscopic imagery of a surgical operative site during an operative procedure wherein operative fluids, gases or instruments may be applied to the site from a remote location, said method comprising the steps of:

providing a sterile end cap including an external concave mating surface;

inserting a distal end of an endoscope into the sterile end cap;

attaching a separable channel section including an external convex mating surface to the external concave mating surface of the end cap for providing operative fluids, gases or instruments to the operative site; and

viewing the surgical operative site via the endoscope.

48. A method, as claimed in claim 47, further including the step of:

detaching the separable channel section from the end cap without removing the endoscope from within the sterile end cap; and

attaching another separable channel section to the end cap without removing the endoscope from within the sterile end cap.