Coating suitable for surgical instruments
a surgical instrument and coating technology, applied in the field of material coatings, can solve the problems of high temperature in the tissue and at least part of the surgical instrument, formation of tissue fragments and other substances that often accumulate and form deposits, and eschar frequently accumulates, so as to improve the performance of the apparatus, improve the durability of the coating, and prevent or reduce the formation or accumulation.
Inactive Publication Date: 2012-06-14
TEAM MEDICAL LLC
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Benefits of technology
The coating effectively reduces eschar accumulation on surgical instruments and protects tissue from hot instrument surfaces, providing a durable and non-stick surface that maintains performance even at high temperatures, enhancing the efficiency and safety of electrosurgical procedures.
Problems solved by technology
The process of applying RF electrical power causes high temperatures to occur in the tissue and on at least part of the surgical instrument.
The result of these high temperatures is the formation of tissue fragments and other substances that often accumulate and form deposits on surgical instruments.
Eschar frequently accumulates in such amounts that it interferes with surgical procedures.
These compounds suffer from not having high temperature durability.
Materials capable of withstanding high temperatures, such as ceramics, do not confer adequate non-stick properties when used as coatings.
When contacting tissue the hot surfaces damage tissue.
Typical coatings cannot withstand the high temperatures in regions directly adjacent to where RF electrical power transfers to tissue.
Method used
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[0025]The present invention is for coating formulations capable of withstanding high temperatures and adherent to metal surfaces and that may be formulated to have a surface free energy that makes the surface substantially non-stick, meaning that the surface is substantially hydrophobic or oleophobic, or both. Such coating formulations have applicability when used to form a surface coat on surgical instruments receiving electrosurgical energy and contacting tissue to achieve a predetermined surgical effect. The present invention further includes applying the subject coating formulations and optionally enhancing the coating's properties by applying energy, such as thermal energy. The coating formulation comprises a silicate solution, such as a colloidal silicate solution, one or more fillers, and a strong base and optionally includes one or more materials that reduce the surface free energy to enhance the non-stick properties of the surface.
[0026]In one approach, a colloidal silicate...
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Abstract
A coating and devices using the coating are provided. The coating is applied in liquid form and dried or otherwise cured to form a durable adherent coating resistant to high temperatures and having optional hydrophobic properties. The coating formulation contains an aqueous formulation of silica, one or more fillers, and sufficient base, (e.g., potassium hydroxide), to have a pH exceeding about 10.5 during at least part of the formulation process. The formulation may contain a compound(s) that affects surface free energy, energy to make the cured coating hydrophobic. Such compounds include silanes containing halogens (e.g., fluorine or chlorine) and in particular silanes containing one or more hydrolyzable groups attached to at least one silicon atom and a group containing one or more halogens (e.g., chlorine or fluorine). A medical instrument (e.g., electrosurgical instrument) may be at least partially covered by a coating using the formulation.
Description
RELATED APPLICATIONS[0001]This is a continuation of U.S. patent application Ser. No. 12 / 768,962 filed Apr. 28, 2010, entitled “COATING SUITABLE FOR SURGICAL INSTRUMENTS,” which application claimed priority to U.S. patent application Ser. No. 11 / 627,340 filed Jan. 25, 2007, entitled “COATING SUITABLE FOR SURGICAL INSTRUMENTS,” which application claimed priority to U.S. Provisional Patent Application No. 60 / 762,375 filed Jan. 25, 2006, entitled “COATING FOR SURGICAL INSTRUMENTS AND RELATED METHODS AND APPARATUS,” each of which applications are incorporated herein by reference in their entirety.FIELD OF THE INVENTION[0002]The present invention relates to materials' coatings and using coatings to protect and affect the surface properties of products or apparatus at least partially covered with such coatings, such as instruments used during surgical procedures. The invention may be used in applications where coatings are useful and more particularly for applications benefiting from conta...
Claims
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IPC IPC(8): B05D3/02B05D7/00
CPCC04B24/42Y10T428/259C04B2111/00482C04B2111/00525C04B2111/00836C04B28/26H01B3/445C09D1/00A61B18/00C04B14/06C04B14/30C04B14/303C04B14/305C04B14/322C04B14/325C04B14/366C04B18/146C04B40/0263C04B2103/40C04B14/323C04B14/324C04B14/328C04B24/2682Y02W30/91A61B18/14A61B2017/00526A61L31/088A61L31/14A61L2420/02A61L2420/06A61L2420/08B05D1/36B05D3/007B05D5/00A61B2018/00601
InventorHEIM, WARREN P.BRASSELL, JAMES
OwnerTEAM MEDICAL LLC