Medical diagnostic instrument having portable illuminator

• US 8,388,523 B2
• Filed: 06/03/2009
• Issued: 03/05/2013
• Est. Priority Date: 04/01/2005
• Status: Active Grant

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Welch Allyn Incorporated
• Inventors: Vivenzio, Robert L., Lia, Raymond A., Edwards, Ian K., Wawro, Thaddeus, Slawson, Steven R.
• Primary Examiner(s): Leubecker, John P
• Application Number:
  US12/477,662
• Publication Number:
  US 20090287192A1
• Time in Patent Office: 1,371 Days
• Field of Search: 600/131, 600/178, 600/179, 600/199, 600/200, 600/223, 600/249, 362/154, 362/155, 362/109, 362/572, 362/574
• US Class Current: 600/178
• 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 1/0669 at proximal end of an endoscope
• CPC Class Codes: A61B 1/0684 using light emitting diodes [LED]
• CPC Class Codes: A61B 1/227 for ears, i.e. otoscopes
• CPC Class Codes: A61B 1/233 for the nose, i.e. nasoscopes , e.g. testing of patency of Eustachian tubes
• CPC Class Codes: A61B 1/303 for the vagina, i.e. vaginoscopes
• CPC Class Codes: A61B 1/31 for the rectum, e.g. proctoscopes, sigmoidoscopes , colonoscopes
• 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: A61B 3/0008 provided with illuminating means A61B3/117 takes precedence; goniolenses used for laser treatment A61F9/009; illuminating means for optical instruments G02B27/00

Abstract

A portable medical diagnostic instrument includes an instrument head and a handle portion having an open-ended receiving cavity. A compact illuminator defined by a housing retaining a miniature light source and a power supply is releasably fitted within the open-ended receiving cavity of the handle portion wherein the light source of the illuminator is optically coupled with the instrument on assembly therewith. The handle portion can be integral with the instrument or releasably attached. The handle portion according to at least one version is made from a plastic or other suitable material, permitting disposability and/or single patient use. In one version, the handle portion is flexibly deformable, at least partially, to facilitate release of the portable illuminator.

Claims

1. A hand-held medical diagnostic instrument assembly, said assembly comprising:

at least one hand held medical diagnostic instrument, said at least one instrument comprising an instrument head and a handle portion, said handle portion including an enclosed receiving cavity with an open proximal end; and

an illuminator having a compact light source and a power supply each disposed within an interior of a housing, said illuminator being sized to fit substantially within the open proximal end of said enclosed receiving cavity in releasable fashion, said handle portion and said illuminator further including features for optically coupling the light source of a retained illuminator with said instrument head wherein said illuminator housing includes an upper cylindrical portion engageable with a tubular portion extending from the interior of the upper portion of said receiving cavity of said handle portion, said tubular portion of said handle portion further including at least one lens member aligned with said compact light source when said illuminator is attached in which said at least one lens member and said tubular portion are made from the same material and in which said at least one lens member is optically transmissive and said tubular portion is opaque.

2. An assembly as recited in claim 1, wherein said handle portion is releasably attached to said instrument head.

3. An assembly as recited in claim 2, wherein said handle portion is releasably attachable relative to said instrument head, said instrument head including an extending port and said handle portion including a socket engageable with said port.

4. An assembly as recited in claim 2, wherein said handle portion is disposable and said instrument head is reusable.

5. An assembly as recited in claim 4, wherein said handle portion is biodegradable.

6. An assembly as recited in claim 5, wherein said handle portion is made from a plastic material that is treated with an additive that renders the handle portion biodegradable.

7. An assembly as recited in claim 1, wherein said handle portion is integral to said instrument.

8. An assembly as recited in claim 1, wherein said receiving cavity includes at least one guide rail.

9. An assembly as recited in claim 1, wherein said tubular portion of said handle portion includes an integrally formed surface, said formed surface creating a seal between said illuminator and said instrument and in which said formed surface is said at least one lens member.

10. An assembly as recited in claim 1, wherein said handle portion includes at least one retaining feature for retaining said illuminator within said enclosed receiving cavity.

11. An assembly as recited in claim 1, wherein said handle portion further includes at least one feature for facilitating release of said illuminator from said handle portion.

12. An assembly as recited in claim 11, wherein at least a portion of said handle portion is flexibly deformable to facilitate release of said illuminator.

13. An assembly as recited in claim 12, wherein said open-ended receiving cavity includes at least one guide rail, said at least one guide rail including a ramped surface within said flexibly deformable portion of said handle portion for engaging said illuminator when deformed to facilitate release of said illuminator.

14. An assembly as recited in claim 1, including at least one heat dissipating rib in said receiving cavity.

15. An assembly as recited in claim 14, wherein said at least one heat dissipating rib also serves as guide rails in said enclosed receiving cavity for said illuminator.

16. An assembly as recited in claim 1, wherein said at least one hand-held medical diagnostic instrument is at least one of the group consisting of a sigmoidoscope, an anoscope, an ophthalmoscope and an otoscope, each of said instruments including a handle portion having an enclosed open-ended receiving cavity and tubular portion sized for releasably receiving and retaining said illuminator.

17. An assembly as recited in claim 1, wherein said handle portion is manufactured from a plastic material.

18. An assembly as recited in claim 1, wherein said illuminator is automatically energized when said illuminator is inserted in said receiving cavity, said illuminator including an external switch assembly engageable by a feature of said receiving cavity when said illuminator is inserted therein.

19. An assembly as recited in claim 18, wherein said illuminator is automatically caused to be deenergized when said illuminator is removed from said receiving cavity, said external switch assembly being biased to a non-energized position such that movement of said illuminator from said receiving cavity feature reverts said external switch assembly to the non-energized position.

20. A medical diagnostic instrument system, said instrument system comprising:

a plurality of hand-held medical diagnostic instruments, each of said diagnostic instruments including a handle portion having an open-ended receiving cavity, said receiving cavity being entirely enclosed with the exception of an open proximal end and an instrument head, said plurality of instruments including at least two different instruments configured for examining different medical targets; and

a portable illuminator interchangeably and releasably couplable with the open-ended receiving cavity of each of said plurality of hand-held diagnostic instruments, said illuminator being defined by a housing retaining a portable power supply and a compact light source, said compact light source being retained within a cylindrical upper portion of said illuminator housing, said handle portion including a hollow tubular portion sized to receive said upper cylindrical portion, said hollow tubular portion including a lens element therein that is aligned with the compact light source in which said lens element and said tubular portion are made from the same material and in which said lens element is optically transmissive and said tubular portion is opaque.

21. A system as recited in claim 20, wherein said housing of said illuminator is substantially enclosed within said receiving cavity of at least one said hand-held medical diagnostic instrument of said plurality of instruments.

22. A system as recited in claim 20, wherein said plurality of instruments include the group consisting of anoscopes, sigmoidscopes, otoscopes, ophthalmoscopes, episcopes, vagiscopes, rhinoscopes and vaginal specula, each of said instruments including a handle portion having said receiving cavity and said tubular portion.

23. A system as recited in claim 20, wherein said handle portion is disposable.

24. A system as recited in claim 20, wherein said handle portion is integral to at least one of said plurality of diagnostic instruments.

25. A system as recited in claim 23, wherein said disposable handle portion of at least one diagnostic instrument of said plurality of instruments is releasably attached to said instrument head.

26. A system as recited in claim 20, wherein the receiving cavity of at least one handle portion substantially encloses said compact illuminator, said handle portion including an upper end that is sealed to prevent fluids from said instrument from entering said handle portion.

27. A system as recited in claim 20, wherein said at least one handle portion is made from a moldable material, said hollow tubular portion having a interface surface that provides a seal and includes a molded integral optical element serving as said lens element, said lens element being made from a thinned section of said moldable material to permit optical transmissivity with the remainder of said tubular portion being opaque.

28. A system as recited in claim 20, wherein said at least one handle portion is made from one of a plastic material having a biodegradable additive.