Method and system for manufacturing electrosurgical seal plates

• US 8,266,783 B2
• Filed: 09/28/2009
• Issued: 09/18/2012
• Est. Priority Date: 09/28/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Brandt, Kim V., Aquino, Allan G.
• Primary Examiner(s): Banks, Derris
• Assistant Examiner(s): NGUYEN, TAI V
• Application Number:
  US12/568,199
• Publication Number:
  US 20110072638A1
• Time in Patent Office: 1,086 Days
• Field of Search: 295/921, 298/25, 298/74, 298/76, 298/32, 298/52, 295/271, 295/272, 295/57, 606/49, 606/30, 606/51, 606/42, 156/242, 156/145, 264/511, 264/272.11, 264/259
• US Class Current: 29/527.1
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2018/1412 Blade
• CPC Class Codes: A61B 2018/1455 having a moving blade for cutting tissue grasped by the jaws
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.
• CPC Class Codes: Y10T 29/49165 by forming conductive walled aperture in base
• CPC Class Codes: Y10T 29/4998 Combined manufacture including applying or shaping of fluent material
• CPC Class Codes: Y10T 29/49982 Coating
• CPC Class Codes: Y10T 29/49995 Shaping one-piece blank by removing material

Abstract

A method of manufacture for an end effector assembly is provided. The method includes providing a pair of jaw members. A step of the method includes forming one or more seal plates positionable on one of the pair of jaw members. Etching a dam along a side of the one or more seal plates is a step of the method, wherein the etched dam inhibits the flow of a plastic on the one or more seal plate such that a height of the plastic with respect to the at least one seal plate during an overmolding process may be controlled. The method includes positioning the one or more seal plates on the one of the pair of jaw members; and overmolding the seal plate to one or more of the pair of jaw members.

Claims

1. A method of manufacture for an end effector assembly, the method including:

providing a pair of jaw members;

forming at least one seal plate positionable on at least one of the pair of jaw members;

etching a dam along a side of the at least one seal plate, wherein the etched darn inhibits the flow of a plastic on the at least one seal plate such that a height of the plastic with respect to the at least one seal plate during an overmolding process may be controlled;

positioning the at least one seal plate on at least one of the pair of jaw members; and

overmolding the seal plate to the at least one of the pair of jaw members.

2. A method of manufacture for an end effector assembly according to claim 1, wherein the step of etching is performed via a photolithographic process.

3. A method of manufacture for an end effector assembly according to claim 1, further including the step of etching a knife slot on the at least one seal plate.

4. A method of manufacture for an end effector assembly according to claim 1, wherein the step of etching further includes etching a plurality of targeted retention features along the side of the at least one seal plate.

5. A method of manufacture for an end effector assembly according to claim 4, wherein the plurality of targeted retention features are etched through a side of the at least one seal plate.

6. A method of manufacture for an end effector assembly according to claim 4, wherein the plurality of targeted retention features are etched partially through a side of the at least one seal plate.

7. A method of manufacture for an end effector assembly according to claim 1, wherein the step of forming at least one seal plate includes laminating at least two materials together, wherein at least one of the two materials is electrically conductive.

8. A method of manufacture for an end effector assembly according to claim 7, wherein at least one of the at least two materials is selected from the group consisting of stainless steel, copper and ceramic.

9. A method of manufacture for an end effector assembly according to claim 1, wherein the step of etching includes selectively etching copper such that heat sinks are formed at predetermined locations on the at least one seal plate.

10. A method of manufacture for an end effector assembly according to claim 9, further including the step of securing a polyimide flex circuit to the at least one seal plate, wherein the polyimide flex circuit is configured to provide electrical communication between the at least one seal plate and a source of electrosurgical energy.

11. A method of manufacture for an end effector assembly according to claim 10, wherein the step of etching includes etching at least one through hole configured to create an electrical interconnection through a dialectic material on the polyimide flex circuit.

12. A method of manufacture for an end effector assembly according to claim 1, wherein the step of etching includes etching at least one of a textured surface, logo, and ruler on the at least one seal plate.