Vaginal speculum

• US 8,157,728 B2
• Filed: 04/03/2006
• Issued: 04/17/2012
• Est. Priority Date: 04/01/2005
• Status: Active Grant

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Welch Allyn Incorporated
• Inventors: Danna, Dominick, Krauter, Allan I., Vivenzio, Robert L., Saddlemire, Dale C., McMahon, Michael T., Goldfain, Ervin
• Primary Examiner(s): Barrett, Thomas C.
• Assistant Examiner(s): BECCIA, CHRISTOPHER J
• Application Number:
  US11/910,378
• Publication Number:
  US 20090216088A1
• Time in Patent Office: 2,206 Days
• Field of Search: 600160-183, 600184-200, 600201-246, 606/212
• US Class Current: 600/223
• CPC Class Codes: A61B 1/00105 characterised by modular construction
• CPC Class Codes: A61B 1/00114 Electrical cables in or with an endoscope
• CPC Class Codes: A61B 1/06 with illuminating arrangements
• CPC Class Codes: A61B 1/0669 at proximal end of an endoscope
• CPC Class Codes: A61B 1/0684 using light emitting diodes [LED]
• CPC Class Codes: A61B 1/303 for the vagina, i.e. vaginoscopes
• CPC Class Codes: A61B 1/32 Devices for opening or enlarging the visual field, e.g. of a tube of the body dilators A61M29/00
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A vaginal speculum includes an upper blade member and a lower blade member that is movably connected with respect to the upper blade. The lower blade member includes an integrated handle portion having a receiving cavity configured for interchangeably receiving one of a first illumination assembly and a substantially different second illumination assembly. The first illumination assembly differs from the second illumination assembly by at least one structural and/or functional aspect, such as the form of power supply, the type of light source and physical size of the assembly housing.

Claims

1. A vaginal speculum comprising:

a lower blade portion comprising a handle portion having a receiving cavity, said receiving cavity being fully enclosed with the exception of an open end in a lower end of said handle portion, said receiving cavity being configured for receiving an illumination assembly having at least one LED as a light source, wherein at least one feature provided in said receiving cavity is configured to retain said illumination assembly; and

a curved light pipe formed in said lower blade portion, said light pipe having a proximal end disposed in an upper end of said handle portion and a distal end disposed along an elongate portion of said lower blade portion; and

means for coupling said at least one LED to the proximal end of said light pipe wherein said at least one retaining feature is configured to permit automatic energization of said at least one LED when said illumination assembly is axially inserted at least a predetermined distance into said receiving cavity.

2. A speculum as recited in claim 1, wherein said at least one retaining feature includes at least one rib formed in an interior side wall of said receiving cavity.

3. A speculum as recited in claim 1, wherein said at least one retaining feature includes at least one groove formed in an interior side wall of said receiving cavity.

4. A speculum as recited in claim 1, including at least one feature to align said illumination assembly with respect to said receiving cavity.

5. A speculum as recited in claim 1, wherein said receiving cavity is adapted to interchangeably receive either of first and second illumination assemblies in which one of said first and second illumination assemblies is powered by a tethered AC power supply and the other of said illumination assemblies is powered by a portable power supply.

6. A speculum as recited in claim 1, wherein said light coupling means includes a lens disposed in relation to said proximal end of said light pipe.

7. A speculum as recited in claim 6, wherein said lens is disposed in a cored pedestal section that is formed as at least part of the proximal end of said light pipe.

8. A speculum as recited in claim 5, including a guide disposed in the upper portion of said receiving cavity that is configured to align at least one of said first and second illumination assemblies with respect to said light pipe.

9. A speculum as recited in claim 1, wherein said distal end of said light pipe is contoured.

10. A speculum as recited in claim 9, wherein said contoured distal end is defined by an angled cut, said angle being in the range between approximately 55 degrees and 80 degrees relative to an axis extending parallel to the handle portion of said lower blade.

11. A speculum as recited in claim 9, wherein said distal end of said light pipe is defined by a radius in the range between approximately 1.5 inches and 3.5 inches.

12. A speculum as recited in claim 11, wherein the center of said radius is disposed within a region that is about 2.1 inches to 2.7 inches above the lower blade and about 2.3 inches to 2.9 inches distal to the proximal surface of the handle portion of the lower blade.

13. A speculum as recited in claim 1, including means for dissipating heat generated from a retained illumination assembly away from said handle portion.

14. A speculum as recited in claim 13, wherein said heat dissipating means includes at least one air gap defined in said receiving cavity.

15. A speculum as recited in claim 13, wherein said heat dissipating means includes at least one feature to retain said illumination assembly relative to said receiving cavity.

16. A speculum as recited in claim 3, wherein said at least one feature for retaining is further configured to permit illumination assembly to be oriented rotationally in a plurality of orientations about a primary axis of said illumination assembly within said receiving cavity.

17. A speculum as recited in claim 16, wherein said at least one feature for retaining is configured to permit automatic energization of said illumination assembly in at least one or more rotational orientations of said illumination assembly within receiving cavity.

18. A speculum as recited in claim 2, wherein said speculum is disposable.

19. A speculum as recited in claim 18, wherein said speculum is molded from a plastic material.

20. A speculum as recited in claim 13, wherein said heat dissipating means includes a plurality of ribs provided on the exterior of said handle portion.

21. A speculum as recited in claim 20, wherein four ribs are provided on the exterior of said handle portion, said ribs each having a depth of about 0.160 inches, a thickness of about 0.055 inches and in which the ribs are separated by a distance of approximately 0.150 inches.

22. A speculum as recited in claim 1, wherein said handle portion is defined by a substantially rectangular cross section, said cross section having a width to depth aspect ratio of approximately 1.25:

1 to 3;

1.

23. A speculum as recited in claim 1, wherein said handle portion includes at least one feature enabling a user to access a switch member disposed on the exterior of a housing of said illumination assembly disposed in said receiving cavity so as to permit selective manual operation thereof.

24. A speculum as recited in claim 5, including a speculum adapter that is sized to engage the receiving cavity, said speculum adapter including a first envelope that is similar to the external envelope of one of said first and said second illumination assemblies and a second internal envelope that is configured to receive the other of said illumination assemblies.

25. A vaginal speculum comprising:

an upper blade;

a lower blade including a handle portion having a receiving cavity, said upper blade being movably connected to said lower blade, said speculum including a proximal end defining an aperture between proximal ends of said upper and lower blade and a distal end through which illumination is projected toward a target, said lower blade further including a light pipe having a proximal end disposed at an upper portion of said receiving cavity, said light pipe being curved and axially extending substantially along at least an axial portion of said lower blade, and in which said speculum is configured to receive an illumination source in said receiving cavity such that said illumination source is optically coupled to a proximal end of said light pipe, said speculum further including means for reducing the amount of light reflected from said lower blade to a user through said aperture wherein the distal end of said light pipe is contoured, said contour being defined by substantially one of an angled surface having an angle proximal to the handle portion of between about 55 degrees and about 80 degrees and a radiused surface of at least less than about 5.0 inches.

26. A speculum as recited in claim 25, wherein said contoured distal end of said light pipe is defined by a radius in the range of approximately 1.5 inches to 3.5 inches.

27. A speculum as recited in claim 26, wherein the center of said radius is provided within a region that is about 2.1 inches to 2.7 inches above the lower blade and about 2.3 inches to 2.9 inches distal to the proximal surface of the handle portion of the lower blade.

28. A speculum as recited in claim 25, wherein said light reducing means includes treating the surfaces of at least a portion of at least one of the upper and lower blade of said speculum.

29. A speculum as recited in claim 28, wherein the surfaces proximal to said light pipe are treated.

30. A speculum as recited in claim 25, wherein the contoured distal end of said light pipe includes a plurality of stepped surfaces.

31. A speculum as recited in claim 25, including a lens disposed in relation to said proximal end of said light pipe.

32. A speculum as recited in claim 31, wherein said lens is disposed in a cored pedestal section formed as part of said proximal end.

33. A speculum as recited in claim 25, including a guide disposed in relation to the upper end of said receiving cavity for aligning said illumination source.

34. A speculum as recited in claim 33, wherein said guide includes a plurality of centering fingers.

35. A speculum as recited in claim 25, wherein said illumination source includes at least one LED.

36. A speculum as recited in claim 35, wherein said illumination source is a white LED.

37. A speculum as recited in claim 25, wherein said illumination source is an incandescent lamp.

38. A speculum as recited in claim 25, including at least one power supply for energizing said illumination source.

39. A speculum as recited in claim 38, wherein said at least one power supply includes at least one battery.

40. A speculum as recited in claim 25, wherein the receiving cavity of said speculum is configured to interchangeably receive at least a first illumination assembly and a second illumination assembly, each of said first and second illumination assemblies including a different type of light source.

41. A speculum as recited in claim 25, wherein said illumination source is automatically energized when said illumination source is disposed at least a predetermined distance within said receiving cavity.

42. A speculum as recited in claim 25, wherein the surface of the distal end of said light pipe is optically treated.