Process for making electrosurgical scalpel pencil

• US 4,443,935 A
• Filed: 03/01/1982
• Issued: 04/24/1984
• Est. Priority Date: 03/01/1982
• Status: Expired due to Fees

• Current Assignee: Trident Surgical Corporation
• Original Assignee: Trident Surgical Corporation
• Inventors: Zamba, Gene, Foltz, Carl
• Primary Examiner(s): Hall, Carl E.
• Application Number:
  US06/353,479
• Time in Patent Office: 785 Days
• Field of Search: 29/622, 29/825, 29/592 R, 128/303.14, 128/303.17, 200/6 C, 200/153 K
• US Class Current: 29/622
• CPC Class Codes: A61B 18/1402 Probes for open surgery
• CPC Class Codes: A61B 2018/00958 for switching between different working modes of the main function
• CPC Class Codes: H01H 2300/014 Application surgical instrument
• CPC Class Codes: Y10T 29/49105 Switch making
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

A process for making an electrosurgical pencil with rocker switch for holding and controlling a monopolar electrosurgical scalpel blade, wherein the rocker switch pivots on the exterior of the pencil body and is isolated from the interior of the body by a flexible waterproof seal. In the process for manufacturing the electrosurgical pencil, a cable portion having at least a common conductor, first signal conductor, and second signal conductor is selected, clips are attached to each end of the three conductors of the cable portion, and a spring contact and a clip attached to one end of the common conductor are installed in a pencil body portion so that a central portion of the spring contact is held adjacent a switch seat. Clips attached to the first and second signal conductors are then mounted within the body portion beneath opposite ends of the switch seal and spaced apart from the spring contact, and a second body portion is sealed to the first body portion to create a unitary electrosurgical pencil body. The three clips at the opposite end of the cable from the body are installed in an asymmetrical polarized generator connector for electrical connection to an electrosurgical generator, and a seal and rocker switch are attached to the switch seat above the spring contact, so that finger pressure on the rocker switch will deflect the seal and place the spring contact in electrical connection with either of the wire clips within the body attached to the first or second signal conductors.

Claims

1. A process for manufacture of an electrosurgical pencil, comprising the steps of:

(a) attaching wire contact clips to wire ends of a multi-conductor cable;

(b) placing a spring contact member within a housing portion of a two piece electrosurgical pencil casing;

(c) mounting said wire contact clips to said housing portion adjacent to and spaced from said spring contact member;

(d) placing a second housing portion on said first housing portion, and sealing the second housing portion to said first housing portion to complete a casing;

(e) selecting an asymmetric generator plug, and coupling the contact clips on the opposite ends of said wires to said plug;

(f) mounting a seal, switch body, and cap frame to a switch seat defined in said casing adjacent said spring contact; and

(g) securing said cap frame to said casing, retaining said seal and switch body.

2. A process for manufacturing an electrosurgical scalpel pencil comprising the steps of:

(a) withdrawing and severing from a stock reel a cable portion comprising at least a common conductor, a first signal conductor, and a second signal conductor;

(b) connecting wire clips to each end of said common conductor, first signal conductor, and second signal conductor;

(c) placing a spring contact and a clip attached to said common conductor at one end of said cable to a plastic electrosurgical pencil body portion, so that said clip restrains said spring contact and maintains electrical contact therebetween;

(d) placing clips attached to said first signal conductor and said second signal conductor at said one end of said cable within said body portion of said plastic electrosurgical pencil body, spaced apart from one another and adjacent said spring contact;

(e) securing a second body portion of said plastic electrosurgical pencil to said first body portion of said plastic electrosurgical pencil to create a unitary body;

(f) placing wire clips attached to said common conductor, first signal conductor, and second signal conductor at the opposite end of said cable in a generator connector adapted for electrical connection to an electrosurgical generator; and

(g) attaching a seal and rocker switch to a switch seat defined in said pencil body above said spring contact, so that finger pressure on said rocker switch will deflect said spring contact to make electrical connection with either of said wire clips attached to said first signal conductor or said second signal conductor within said pencil body.

3. The process of claim 2, wherein said rocker switch comprises a fulcrum pin, switch body atop said fulcrum pin, and a switch frame surrounding said switch body retaining said switch body, fulcrum pin, and seal to said pencil body.

4. The process of claim 3, wherein said switch frame is sealed sonically to said pencil body.

5. The process of claim 2, wherein said second body portion of said electrosurgical pencil is secured to said first body portion by sonically welding the plastic portions together.

6. The process of claim 2, wherein the spring contact and clip of step (c) engage each other.

7. The process of claim 2, wherein the wire clips are formed with a stamped out portion adapted to hold a conductor end.

8. The process of claim 2, wherein said seal is a rubber gasket.

9. The process of claim 2, wherein said seal and rocker switch are attached by securing a switch frame to said pencil body.

10. The process of claim 2, including the step of sterilizing said electrosurgical scalpel pencil after it is constructed.

11. The process of claim 10, wherein said sterilization is accomplished by gamma radiation.