ECG electrode connector

• US 8,152,571 B2
• Filed: 07/14/2011
• Issued: 04/10/2012
• Est. Priority Date: 12/11/2007
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Selvitelli, David, Meyer, Peter
• Primary Examiner(s): LEON MUNOZ, EDWIN A
• Application Number:
  US13/182,656
• Publication Number:
  US 20110275252A1
• Time in Patent Office: 271 Days
• Field of Search: 439/729, 439/261, 439/268, 439/859, 439/909, 439/835, 439/838, 600/372, 607/152
• US Class Current: 439/729
• CPC Class Codes: A61B 2562/227 Sensors with electrical connectors
• CPC Class Codes: A61B 5/24 Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• CPC Class Codes: A61B 5/274 using snap or button fasteners
• CPC Class Codes: A61B 5/303 Patient cord assembly, e.g. cable harness
• CPC Class Codes: H01R 13/193 Means for increasing contact pressure at the end of engagement of coupling part , e.g. zero insertion force or no friction
• CPC Class Codes: H01R 13/6277 comprising annular latching means, e.g. ring snapping in an annular groove
• CPC Class Codes: H01R 13/62933 Comprising exclusively pivoting lever
• CPC Class Codes: H01R 13/639 Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
• CPC Class Codes: H01R 2101/00 One pole
• CPC Class Codes: H01R 2201/12 for medicine and surgery
• CPC Class Codes: H01R 24/20 Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
• CPC Class Codes: Y10S 439/909 Medical use or attached to human body

Abstract

Disclosed is an ECG electrode lead wire connector which provides improved electrical and mechanical coupling of the ECG electrode press stud to the lead wire, provides enhanced ergonomics to the clinician, and may alleviate patient discomfort associated with the attachment and removal of ECG leads. The connector may be engaged and disengaged with little or no force imparted to the patient or the ECG pad, which significantly minimizes the risk of inadvertent dislodgement of the pad. In one embodiment the disclosed connector provides a thumb cam lever which affirmatively engages the press stud to the connector, and provides tactile feedback to the clinician that the connector is properly engaged. In other embodiments, the connector provides a pushbutton to enable the clinician to easily engage and disengage the connector from the ECG stud. The disclosed connectors may also decrease clinician fatigue, and may provide more reliable ECG results.

Claims

1. An ECG connector assembly, comprising:

a housing having a top cover, a bottom cover including an inner surface and an outer surface, and a side wall extending orthogonally from at least a portion of a perimeter of the bottom cover and joinable to at least a portion of a perimeter of the top cover;

an aperture defined in the bottom cover dimensioned to operably receive a press stud;

an electrical contact member fixed to the inner surface of the housing, the electrical contact member defining a contact opening that is exposed within the aperture;

a lever having an actuating end, a pivoting end, and an engaging region disposed between the actuating end and the pivoting end, the pivoting end pivotable about an axis orthogonal to the bottom cover between an engaged position and a disengaged position, the engaging region configured to retain a press stud inserted into the aperture of the bottom cover against at least a portion of the exposed contact opening of the electrical contact when the lever is in the engaged position; and

a biasing member configured to bias the lever towards the engaged position.

2. The ECG connector assembly in accordance with claim 1, wherein the electrical contact member further comprises a lead wire terminal.

3. The ECG connector assembly in accordance with claim 2, wherein the lead wire terminal is electrically connected to a terminal end of a lead wire.

4. The ECG connector assembly in accordance with claim 1, wherein the engaging region includes a curvate press stud-contacting surface.

5. The ECG connector assembly in accordance with claim 1, wherein the biasing member is a V-spring having a coil base, a fixed leg engaging the housing, and a movable leg engaging the lever.

6. The ECG connector assembly in accordance with claim 1, wherein the contact opening includes a first contact opening portion and a second contact opening portion, wherein an internal dimension of the first contact opening portion is greater than a corresponding internal dimension of the second contact opening portion.

7. The ECG connector assembly in accordance with claim 6, wherein the engaging region of the lever extends across the first contact opening portion when the lever is in the engaged position.

8. The ECG connector assembly in accordance with claim 1, wherein the actuating end of the lever protrudes through an opening defined in the side wall of the housing.

9. The ECG connector assembly in accordance with claim 1, wherein the actuating end of the lever comprises a finger recess.

10. The ECG connector assembly in accordance with claim 1, further comprising:

a lead wire having a proximal end and a distal end, wherein the distal end thereof is electrically coupled to the electrical contact member; and

a strain relief included with the housing and having at least part of the lead wire disposed therethrough.

11. The ECG connector assembly in accordance with claim 1, wherein the top cover includes indicia disposed thereon.

12. The ECG connector assembly in accordance with claim 11, wherein the indicia is formed by at least one of printing, engraving, silk screening, stamping, or integrally molding said marking onto the top cover.

13. A method of engaging an ECG connector with a press stud of an ECG pad, the method comprising the steps of:

providing an ECG connector having an actuating member actuatable along a plane substantially parallel to a plane of the ECG pad, a housing having a contact surface oriented in a plane substantially parallel to the plane of the ECG pad, and a contact member fixed to the contact surface;

positioning the actuating member to an open position;

introducing the press stud into an opening provided by the ECG connector; and

positioning the actuating member to a closed position to operably engage the press stud with the contact member.

14. The method in accordance with claim 13, wherein the actuating member is biased to the closed position.

15. The method in accordance with claim 14, wherein the first positioning step includes the application of finger pressure to overcome the bias of the actuating member.

16. The method in accordance with claim 13, wherein the actuating member is selected from the group consisting of a spring-loaded push button and a spring-loaded lever.

17. The method in accordance with claim 13, wherein the actuating member includes a cam member configured to bias an electrical contact member towards the press stud.