Device and method for reducing crosstalk

• US 20080081508A1
• Filed: 09/29/2006
• Published: 04/03/2008
• Est. Priority Date: 09/29/2006
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Nellcor Puritan Bennett LLC (Medtronic Plc)
• Inventors: Mannheimer, Paul D., Chew, Bradford B., Sawatari, Ken
• Granted Patent: US 7,476,131 B2
• Time in Patent Office: Days
• US Class Current: 439/418
• CPC Class Codes: A61B 2562/222 Electrical cables or leads therefor, e.g. coaxial cables or ribbon cables
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: H01R 13/6461 Means for preventing cross-talk
• CPC Class Codes: H01R 13/65915 Twisted pair of conductors surrounded by shield
• CPC Class Codes: H01R 13/6658 on printed circuit board H01R13/6666 - H01R13/6691 take precedence

Abstract

A device and method for reducing crosstalk between wires is provided. The method includes spatially separating first and second sets of wires. A device is disposed relative to the first and second sets of wires to maintain the spatial separation. The method also comprises coupling pins to the first and second sets of wires. Additionally, the method includes covering the device with a connector housing.

Claims

1. A pulse oximetry cable assembly comprising:

a cable having a first pair of wires and a second pair of wires;

an insulative piece configured to maintain spatial separation between the first and second pairs of wires; and

a connector housing formed over the insulative piece.

2. The cable assembly according to claim 1, wherein the insulative piece comprises a first aperture and a second aperture and wherein the first pair of wires passes through the first aperture and the second pair of wires passes through the second aperture.

3. The cable assembly according to claim 1, wherein the insulative piece comprises first and second open ended apertures disposed on opposite sides of the insulative piece, the first pair of wires being positioned in the first open ended aperture and the second pair of wires being positioned in the second open ended apertures.

4. The cable assembly according to claim 1, wherein the insulative piece comprises epoxy silicone molded around the first pair of wires and the second pair of wires to maintain spatial separation.

5. The cable assembly of claim 1, wherein the insulative piece comprises solder pads and traces, wherein the traces and solder pads are configured to spatially separate the wires.

6. The cable assembly of claim 1, wherein the insulative piece comprises a printed circuit board configured to spatially separate the at least two wires of the pulse oximetery cable and electrically couple the wires to pins of a connector, the printed circuit board comprising traces which route emitter signals carried on the first pair of wires away from detector signals carried on the second pair of wire.

7. The cable assembly of claim 6, wherein the printed circuit board shields detector contacts and emitter contacts from memory chip contacts.

8. The cable assembly of claim 1, wherein the insulative piece supports a conductive piece, the conductive piece being electrically grounded and positioned in between the first and second pairs of wires.

9. The cable assembly of claim 1, comprising a sensor coupled to the first and second pairs of wires.

22. The cable assembly according to claim 1, comprising a connector for coupling the cable assembly to a pulse oximeter.

10-21. -21. (canceled)