Detachable connector assembly for use with video camera equipped medical instruments

• US 5,611,769 A
• Filed: 09/22/1995
• Issued: 03/18/1997
• Est. Priority Date: 09/22/1995
• Status: Expired due to Fees

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Welch Allyn Incorporated
• Inventors: Monroe, Richard A.
• Primary Examiner(s): Paumen, Gary F.
• Application Number:
  US08/532,978
• Time in Patent Office: 543 Days
• Field of Search: 348/76, 348/73, 600/112, 600/132, 600/110, 600/109, 439/551, 439/565
• US Class Current: 600/112
• CPC Class Codes: A61B 1/00124 electrical, e.g. electrical plug-and-socket connection
• CPC Class Codes: A61B 1/00126 optical, e.g. for light supply cables
• CPC Class Codes: A61B 1/00128 mechanical, e.g. for tubes or pipes
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 1/051 Details of CCD assembly
• CPC Class Codes: H01R 13/622 Screw-ring or screw-casing H01R13/623 takes precedence
• CPC Class Codes: H04N 23/50 Constructional details

Abstract

A video camera head for use with medical diagnostic instrumemts. A connector assembly, positioned at the outlet of the housing of the camera head, allows a video cable including a multi-conductor tightenable connector to be attached to and detached from the fragile internal wiring of the camera head without applying destructively high forces thereto. A mounting assembly, positioned at the inlet of the housing of the camera head, enclose and protects a video imaging chip while securely mounting the same in a predetermined position and orientation within the housing of the camera head.

Claims

1. A connector assembly for a video camera head having a threaded outlet opening that includes an internal retaining shoulder, a video output connector having a circumferential flange, a key structure and a plurality of output pins connected to a video imaging device, including, in combination:

a U-shaped spacer shaped to engage said key structure and flange and to seat on said retaining shoulder;

a retaining collar adapted to thread into said outlet opening and secure said spacer and said connector in place with respect to the imaging head;

whereby an external cable may be attached to and detached from said video output connector without subjecting the connections between said pins and said imaging device to forces high enough to damage said connections.

2. The connector assembly of claim 1 in which said retaining shoulder defines an opening large enough to permit said flange to pass therethrough, but not large enough to permit said spacer to pass therethrough.

3. The connector assembly of claim 1 in which said spacer defines a key receiving structure, and in which said spacer has a smaller radial dimension in those parts of the spacer that are relatively close to said key receiving structure than in those parts of the spacer that are relatively distant from said key receiving structure.

4. The connector assembly of claim 1 further including a compressible member disposed between said retaining collar and said flange.

5. The connector assembly of claim 1 in which said connector and said collar are so sized and shaped that, when said collar is secured to said imaging head, the outer surface of said collar and the outer surface of said connector are approximately flush with one another.

6. The connector assembly of claim 1 in which said key structure and said spacer are positioned between said flange and said retaining shoulder.

10. The video camera head of claim 1 further including a compressible gasket disposed between said retaining collar and said flange.

7. A video camera head including a housing, a video imaging device supported within said housing, a video connector having a plurality of output pins and a multi-conductor cable for connecting said imaging device to said output pins;

said video connector being of the type including a connector shell having a circumferentially disposed flange and a radially disposed key structure;

said housing including a threaded opening through which said connector shell may project, and a retaining shoulder, characterized by;

a generally U-shaped spacer adapted to fit over said shell and to engage said key structure and said flange;

a threaded retaining collar adapted to threadedly engage said threaded opening while pressing said flange and spacer against said shoulder;

whereby a video cable connector may be threadedly secured to said connector shell without damaging the connections between said multi-conductor cable and said output pins.

8. The video camera head of claim 7 in which said U-shaped spacer is so shaped that it may be slipped over said connector and into engagement with said key structure while said connector shell hangs loosely within said threaded opening.

9. The video camera head of claim 7 in which said spacer defines a key structure receiving slot, and in which said spacer has a radial dimension that is smaller in those parts of the spacer that are relatively close to said slot than in those parts of the spacer which are relatively distant from said slot.

11. The video camera head of claim 7 in which said housing, said connector and said collar are so shaped that, when the imaging head is fully assembled, the outer surface of said collar and the outer surface of said connector lie approximately in the same plane.

12. The video camera head of claim 7 in which said key structure and said spacer are both located along the same surface of said flange.

13. A video camera head having a housing defining an inlet opening including, in combination:

a video imaging chip for receiving an optical image and converting said image to an electrical signal;

first and second mounting members for mounting and enclosing said imaging chip;

positioning means, formed in at least one of said mounting members and said housing, for positioning said imaging chip in a predetermined position within said housing.

14. The camera head set forth in claim 13 further including orienting means, formed in at least one of said mounting members and said housing, for establishing a predetermined orientation between said chip and said housing.

15. A video camera head defining an inlet opening and an outlet opening including, in combination:

a video imaging chip for receiving an optical image and converting said image to a video signal;

a multi-conductor tightenable connector plug, said plug having a circumferential flange and a key structure;

a multi-conductor cable for transmitting electrical signals including said video signal between said chip and said connector plug;

first and second mounting members for mounting and enclosing said imaging chip;

positioning means, formed in at least one of said mounting members and said inlet opening, for positioning said imaging chip in a predetermined position within said housing;

a retaining shoulder formed in said outlet opening;

a U-shaped spacer shaped to engage said key structure and to seat on said retaining shoulder; and

a retaining collar adapted to thread into said outlet opening and secure said spacer and said connector plug in place with respect to said housing.

16. The video camera head of claim 15 in which said mounting members are adapted to thread into one another with said imaging chip positioned therebetween.