Disposable internal electrode with sterilization shield and method of using the same

• US 5,213,113 A
• Filed: 01/22/1992
• Issued: 05/25/1993
• Est. Priority Date: 01/22/1992
• Status: Expired due to Fees

• Current Assignee: Creditanstalt-Bankverein (Unicredit SPA)
• Original Assignee: Physio-Control Incorporated (Stryker Corporation)
• Inventors: Hlinsky, Robert L.
• Primary Examiner(s): Cohen, Lee S.
• Assistant Examiner(s): GILBERT, SAMUEL G
• Application Number:
  US07/824,034
• Time in Patent Office: 489 Days
• Field of Search: 128/419 D, 128/800, 128/801, 128/784, 128/783, 439/346, 439/324, 439/332, 439/233, 439/338, 403/348, 403/349, 606/42
• US Class Current: 607/152
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium

Abstract

An internal defibrillation electrode (10) is disclosed including a disposable electrode (12) and a reusable handle (14). The electrode includes an electrode spoon (16), a shaft (18), and a barrier sleeve (20). The handle includes a handle body (58), electrical cable (60), sleeve connector (62), and electrical connector (64). The handle has a dagger-style configuration that makes the electrode assembly easy to use and is further constructed to allow the electrode to be quickly and reliably attached. In that regard, during assembly, a bayonet (32) on the shaft of the electrode is engaged in a bayonet receptacle (68) of the handle. The sleeve is then pulled over the handle to form a barrier between the handle and the environment. After the electrode assembly is used, the sleeve is removed from the handle, the electrode disengaged from the handle, and the electrode disposed of. After attaching a new electrode, the handle is then ready for immediate service. The handle can also be used with a reusable electrode that does not include a barrier sleeve. To that end, the handle is constructed to exhibit a relatively long life when subjected to repeated steam sterilization.

Claims

1. An electrode for use with a handle to couple a patient to a medical instrument, said electrode comprising:

electrode means, attachable to the handle, for contacting the patient, and

barrier means, coupled to said electrode means, being deployed over the handle to provide a barrier between the handle and the patient when the electrode means is attached to the handle.

2. The electrode of claim 1, wherein said electrode means comprises an electrode spoon and a shaft, having first and second ends, said first end of said shaft being attached to said spoon.

3. The electrode of claim 2, wherein said barrier-means comprises a tubular sleeve having first and second ends, said first end of said sleeve being coupled to said shaft.

4. The electrode of claim 3, wherein said tubular sleeve is flexible and deployable between collapsed and extended positions.

5. The electrode of claim 4, further comprising packaging means for receiving said electrode spoon and preventing said electrode spoon from being contaminated.

6. The electrode of claim 5, wherein said packaging means is further for receiving said electrode spoon and said sleeve and comprises a first compartment, for receiving said electrode spoon and said sleeve, and a second compartment for receiving said second end of said shaft.

7. A defibrillation electrode system for use in applying energy from a defibrillator to a patient, said defibrillation electrode system comprising:

a handle that is coupleable to the defibrillator; and

an electrode that is coupleable to said handle, said electrode including an electrode element and a sleeve, said electrode element being for contacting the patient, said sleeve being deployable to substantially cover said handle.

8. The electrode system of claim 7, wherein said sleeve includes a pleated main body that allows said sleeve to be easily deployed from a collapsed position to an extended position.

9. The electrode system of claim 7, wherein said sleeve is a substantially tubular piece of latex, roughly three centimeters in diameter and one meter in length.

10. The electrode system of claim 7, wherein said sleeve further comprises electrode connection means for sealably coupling said sleeve to said electrode element and handle connection means for sealably coupling said sleeve to said handle.

11. The electrode system of claim 10, wherein said handle includes a cable and a defibrillator connector, said cable having a first end attached to said handle and a second end attached to said fibrillator connector, said defibrillator connector being for coupling said handle to the fibrillator.

12. The electrode system of claim 11, wherein said electrode element includes a shaft and said cable includes a sleeve connector.

13. The electrode system of claim 12, wherein said electrode connection means comprises a pair of internal and external connectors, provided on one end of said sleeve and attached to said shaft, and wherein said handle connection means comprises a ring-shaped connector provided on the other end of said sleeve for attachment to said sleeve connector.

14. The electrode system of claim 7, wherein said handle further comprises means for engaging said electrode and discharge means for controlling the discharge of energy from the defibrillator to said electrode.

15. An electrode assembly for use with a pair of defibrillator handles, said electrode assembly comprising:

first and second electrode elements; and

a tubular barrier sleeve having first, second and third ends, said first and second ends being coupled to said first and second electrode elements.

16. A method of effectively sterilizing a handle for use with a defibrillator, said method comprising the steps of:

(a) attaching an electrode to said handle, said electrode including a sterile tubular sleeve; and

(b) extending said sleeve over said handle to provide a sterile barrier between the handle and its environment.

17. An electrode system for use by an operator between a patient and a medical instrument, said electrode system comprising:

handle means, coupleable to said medical instrument, for being grasped by the operator; and

electrode means, attachable to said handle means, for contacting the patient and including deployable barrier means for providing a barrier to the transfer of the contaminants between said handle means and the patient.