Electrosurgical instrument having a coated electrode utilizing an atomic layer deposition technique

• US 8,303,582 B2
• Filed: 09/15/2008
• Issued: 11/06/2012
• Est. Priority Date: 09/15/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Cunningham, James S.
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): GILBERT, ANDREW M
• Application Number:
  US12/210,598
• Publication Number:
  US 20100069904A1
• Time in Patent Office: 1,513 Days
• Field of Search: 606 45- 52
• US Class Current: 606/48
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 2017/0088 ceramic
• CPC Class Codes: A61B 2018/00107 Coatings on the energy applicator
• CPC Class Codes: A61B 2018/00345 Vascular system
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00619 Welding

Abstract

An electrosurgical instrument includes a support member and an electrode. The electrode is disposed on the support member and has a coating disposed thereon. The coating includes a seed layer and an atomic-layer-deposition (“ALD”) layer. The ALD layer is hydrophobic or hydrophilic. The seed layer may be conductive or insulative.

Claims

1. An electrosurgical instrument, comprising:

at least one support member;

an electrode at least partially disposed on the at least one support member; and

a coating at least partially disposed on the electrode comprising;

a seed layer and an ALD layer, wherein the ALD layer is at least one of hydrophobic and hydrophilic and one of the seed layer or the ALD layer includes Zn₁₉Al₅O₂.

2. The electrosurgical instrument according to claim 1, wherein the seed layer is formed using atomic layer deposition.

3. The electrosurgical instrument according to claim 1, wherein the ALD layer comprises about 90% titania.

4. The electrosurgical instrument according to claim 1, wherein the ALD layer is formed from Tridecafluoro-1,1,2,2-tetrahydrooctylmethyl-bis(dimethylamino)silane (FOMB(DMAS)S, C₈F₁₃H₄(CH₃)Si(N(CH₂)₂)₂).

5. A method of coating, comprising:

providing an electrosurgical instrument, including;

at least one support member; and

an electrode at least partially disposed on the at least one support member;

coating the electrode with a seed layer;

coating the seed layer with an ALD layer, wherein the ALD layer is at least one of hydrophobic and hydrophilic and one of the seed layer or the ALD layer includes Zn₁₉Al₅O₂.