Ultrasonic surgical blades

• US 10,045,794 B2
• Filed: 04/03/2017
• Issued: 08/14/2018
• Est. Priority Date: 11/30/2007
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon, LLC (Johnson & Johnson)
• Inventors: Witt, David A., Messerly, Jeffrey D., Houser, Kevin L.
• Primary Examiner(s): Sellman, Cachet I
• Application Number:
  US15/477,861
• Publication Number:
  US 20170202573A1
• Time in Patent Office: 498 Days
• Field of Search: 606 45, 427299, 427 225
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 17/320092 with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
• CPC Class Codes: A61B 2017/00849 with respect to tissue, e.g. hollow organs
• CPC Class Codes: A61B 2017/00853 low friction, hydrophobic and corrosion-resistant fluorocarbon resin coating (ptf, ptfe, polytetrafluoroethylene)
• CPC Class Codes: A61B 2017/0088 ceramic
• CPC Class Codes: A61B 2017/320078 Tissue manipulating surface
• CPC Class Codes: A61B 2017/320093 additional movable means performing cutting operation
• CPC Class Codes: A61B 2017/320094 additional movable means performing clamping operation
• CPC Class Codes: A61B 2017/320095 with sealing or cauterizing means
• CPC Class Codes: A61L 2400/10 Materials for lubricating medical devices
• CPC Class Codes: A61L 2420/08 Coatings comprising two or more layers
• CPC Class Codes: A61L 31/08 Materials for coatings
• CPC Class Codes: A61L 31/088 Other specific inorganic materials not covered by A61L31/084 or A61L31/086
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: A61L 31/14 Materials characterised by their function or physical properties , e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
• CPC Class Codes: A61N 7/00 Ultrasound therapy lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 ; using ultrasound for introducing media into the body A61M37/0092
• CPC Class Codes: A61N 7/02 Localised ultrasound hyperthermia hyperthermia in general A61F7/00

Abstract

An ultrasonic surgical blade includes a body having a proximal end, a distal end, and an outer surface. The distal end is movable relative to a longitudinal axis in accordance with ultrasonic vibrations applied to the proximal end. At least a portion of the outer surface of the body comprises a lubricious coating adhered thereto. The lubricious coating has a coefficient of friction that is less than the coefficient of friction of the outer surface of the body.

Claims

1. A method of coating an ultrasonic blade, the method comprising:

obtaining the ultrasonic blade comprising a proximal end configured to receive ultrasonic vibrations, wherein the ultrasonic blade further comprises;

an outer surface comprising a tissue treatment region; and

a first coating applied to the tissue treatment region;

applying a surface treatment to at least a portion of the tissue treatment region; and

applying a second coating to at least a portion of the tissue treatment region, wherein the second coating comprises a thickness greater than three microns.

2. The method of claim 1, wherein the surface treatment comprises a roughening treatment to enhance adhesion of the second coating.

3. The method of claim 2, wherein the second coating comprises a lubricious polymeric coating.

4. The method of claim 1, further comprising:

sterilizing the ultrasonic blade; and

storing the sterilized ultrasonic blade in a sterile container.

5. The method of claim 1, wherein the second coating comprises a thickness greater than 0.0001 inches and less than 0.010 inches.