Electronic cable yoke socket with locking mechanism

• US 5,632,643 A
• Filed: 02/05/1996
• Issued: 05/27/1997
• Est. Priority Date: 02/05/1996
• Status: Expired due to Term

• Current Assignee: Tronomed, Inc.
• Original Assignee: Tronomed, Inc.
• Inventors: Shepherd, David J., Olms, Harald O., Rossini, Henry G.
• Primary Examiner(s): Abrams, Neil
• Assistant Examiner(s): Kim, Yong Ki
• Application Number:
  US08/596,647
• Time in Patent Office: 477 Days
• Field of Search: 439/345, 439/346, 439/350, 439/351, 439/352, 439/355, 439/368
• US Class Current: 439/368
• CPC Class Codes: A61B 2562/227 Sensors with electrical connectors
• CPC Class Codes: A61B 5/303 Patient cord assembly, e.g. cable harness
• CPC Class Codes: H01R 13/518 for holding or embracing several coupling parts, e.g. frames
• CPC Class Codes: H01R 13/5845 the strain relief being achieved by molding parts around cable and connections
• CPC Class Codes: H01R 13/627 Snap or like fastening
• CPC Class Codes: H01R 13/6276 comprising one or more balls engaging in a hole or a groove
• CPC Class Codes: H01R 13/6658 on printed circuit board H01R13/6666 - H01R13/6691 take precedence
• CPC Class Codes: H01R 13/6666 with built-in overvoltage protection
• CPC Class Codes: H01R 2201/12 for medicine and surgery

Abstract

An improved yoke socket for use with separate leads and plugs such as those used with electrocardiogram devices provides detents to guard against accidental disconnection of plugs from the socket. A first surface of the yoke socket bears a row of apertures into which can be inserted connectors born by the individual lead plugs. A groove penetrates a second surface of the yoke socket to expose the inserted connectors. Each connector has a notch that acts in concert with a retaining rod placed within the groove to retain the plug against accidental detaching. The retaining rod comprises a series of expanded or bead-like portions connected by thinner rod portions. The expanded portion is sized to protrude into each aperture from the groove to serve as a detent by interacting with the notch of an inserted connector. The entire retaining rod is backed by a layer of compressed elastomer such as rubber which acts to bias the retaining rod into contact with the connector. A two piece plug combiner is also provided for temporarily aggregating a group of lead plugs into a single unit.

Claims

1. A yoke socket for removably retaining lead plugs when lead plugs are inserted into the yoke socket, the yoke socket comprising:

a yoke socket body having, on a first surface thereof, a row of apertures, each aperture sized to accept a connector of an individual lead plug, when a connector is inserted into one of the apertures and each aperture forming a mouth of a bore penetrating the socket body and sized to accept the connector;

a row of openings on a second surface of the yoke socket body, each opening penetrating the yoke socket body and intersecting one of the bores, each opening disposed to expose a connector surface when a connector is inserted into the bore which the opening intersects;

a beaded rod of alternating straight and bead-like regions, the bead-like regions spaced apart by the straight regions and sized so that the rod can be placed in contact with the yoke socket body with one of the bead-like regions intruding into each opening to lie within a retaining recess on a connector surface when a lead plug is inserted into one of the bores;

a piece of resilient material sized to cover the beaded rod; and

a keeper sized to cover and compress the resilient material, biasing the bead-like sections to provide detents for retaining lead plugs when lead plugs are inserted into the yoke socket.

2. The socket of claim 1, wherein the resilient material is an elastomer selected from the group consisting of natural rubber, urethane, neoprene, vinyl polymer, and silicone rubber.

3. The socket of claim 1, wherein the resilient material is provided by a corrugated leaf spring.

4. A socket for removably retaining plugs, the socket comprising:

a socket body having, on a first surface, apertures forming mouths to bores sized to accept connectors born by the plugs;

a groove cut into a second surface of the socket body to expose a portion of a connector when one of the connectors is inserted into one of the bores;

a rod disposed within the groove and sized to interact with a retaining recess on an exposed portion of one of the connectors when one of the connectors is inserted into one of the bores;

a piece of resilient material sized to cover a portion of the rod; and

means for compressing the resilient material, biasing the rod to provide a detent for retaining a plug in the socket when a plug is inserted therein.

5. The socket of claim 4, wherein the resilient material is provided by a corrugated leaf spring.

6. The socket of claim 4, wherein the resilient material is an elastomer selected from the group consisting of natural rubber, urethane, neoprene, vinyl polymer, and silicone rubber.

7. The socket of claim 4, wherein the rod comprises alternating sections, expanded bead-like sections interconnected by thinner sections and wherein the bead-like sections interact with retaining recesses.

8. The socket of claim 7, wherein the thinner rod sections comprise portions of a continuous flexible filament with the bead-like sections attached to the filament and spaced apart thereon.

9. A yoke socket system for removably retaining individual lead plugs, the yoke socket system comprising:

a lead plug having at one end a connector with a retention recess on a lateral surface thereof; and

a yoke socket comprising;

a socket body having an aperture forming a mouth of a bore sized to accept the connector; and

a locking mechanism comprising;

a locking rod sized to fit the retention recess;

a groove in the yoke socket, the groove penetrating into the bore and with the locking rod disposed in the groove to reach the retention recess;

resilient material sized to cover the locking rod; and

means for compressing the resilient material to bias the locking rod towards the retaining recesses providing a detent for stabilizing an interaction between the yoke socket and the lead plug when the plug is inserted into the yoke socket.

10. The socket system of claim 9, wherein the resilient material is an elastomer selected from the group consisting of natural rubber, urethane, neoprene, vinyl polymer, and silicone rubber.

11. The socket system of claim 9, wherein the resilient material is provided by a corrugated leaf spring.

12. The socket system of claim 9, wherein the rod comprises alternating sections, expanded bead-like sections interconnected by thinner more flexible sections and wherein the bead-like sections interact with the retaining recesses.

13. The socket system of claim 12, wherein the thinner rod sections comprise portions of a continuous flexible filament with the bead-like sections spaced apart thereon.

14. The socket system of claim 9 further comprising connection recesses on the lead plugs and a plug combiner including two interconnectable combiner sections for connecting together around the lead plugs and temporarily aggregating the lead plugs into an assembly by interacting with lead plug connection recesses.

15. The yoke socket system of claim 14, wherein the two combiner sections are identical.

16. A yoke socket system for removably retaining lead plugs, the yoke socket system comprising:

lead plugs comprising;

leads;

lead plug bodies with connection recesses, one of the leads attached to a first end of each of the lead plug bodies; and

connectors with retention recesses on a lateral surface thereof, one of the connectors attached to a second end of each of the lead plug bodies;

a yoke socket comprising;

a socket body having an aperture forming a mouth to a bore sized to accept one of the connectors; and

a locking mechanism comprising;

a locking rod sized to fit the retention recess;

a groove in the yoke socket penetrating into the bore with the locking rod disposed in the groove to reach the retention recess;

resilient material sized to cover the locking rod; and

means for compressing the resilient material to bias the locking rod towards the retaining recesses providing a detent for stabilizing an interaction between the yoke socket and the lead plug when the plug is inserted into the yoke socket; and

a plug combiner comprising two interconnectable combiner sections for connecting together around the lead plugs and temporarily aggregating them into an assembly by interacting with the connection recesses.

17. The yoke socket system of claim 16, wherein the two combiner sections are identical.