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Acoustically transparent antimicrobial surfaces

An anti-microbial and acoustic technology, applied to the surface coating liquid device, acoustic wave diagnosis, infrasonic wave diagnosis, etc., can solve the problem of not being able to maintain acoustic sensitivity or anti-microbial activity

Inactive Publication Date: 2016-07-06
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, past attempts to achieve antimicrobial activity have not maintained the desired level of acoustic sensitivity or antimicrobial activity

Method used

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  • Acoustically transparent antimicrobial surfaces
  • Acoustically transparent antimicrobial surfaces
  • Acoustically transparent antimicrobial surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0058] Embodiment 1A manufactures photocatalytic element (Ex-1)

Embodiment (1

[0059] Example (1AA) (copper sputtering on thin film)

[0060] A copper metal target was provided as the copper source material, which was placed on the target stage (cathode side) in the vacuum chamber of the Cressington108 automatic sputtering device. A 5 cm circular stethoscope membrane (Littman Cardiovascular III diaphragm, 3M, Minneapolis, MN, USA) was placed on the anode side. The following parameters were used for the sputtering apparatus: the drive current was about 0.1 mA, and the pressure was about 1 Torr. Introduce argon gas into the vacuum chamber for approximately 20 s of deposition. The substrate temperature was room temperature.

[0061] Embodiment (1AB) (photocatalysis on film (CuxO / heterogeneous TiO 2 ) coating)

[0062] A commercially available Littman stethoscope film (Littman Cardiology III, 3M, Minneapolis, MN, USA) was used as the substrate for the photocatalytic coating. The films were washed sequentially with soap and water, acetone, and me...

Embodiment 2

[0069] Example 2: Adhesion / Hardness Test

[0070] The adhesion of photocatalytic coatings was evaluated by following the procedure described in ASTM-D3359.

[0071] Coating hardness was evaluated using the procedure described in ASTM-3363.

[0072] Table 1

[0073]

[0074] Percentage removed: 0B>65%; 1B: 35-65%; 2B: 15-35%; 3B: 5-15%; 4B<5%; 5B: 0%

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PUM

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Abstract

Described herein are medical elements for reducing intra-patient microbial contamination. The elements include an acoustically transmissive matrix and an antimicrobial element.

Description

Background technique [0001] Some embodiments relate to stethoscopes and accessories for stethoscopes. [0002] Description of the relevant field [0003] Because physicians use stethoscopes with different patients, physician assistants have become accustomed to placing cloth covers over the metal ends of the stethoscopes that touch the patient. This cloth cover is disposable and is changed for each patient. It has also been recognized that the plastic tubing of the stethoscope may also come into contact with the patient, and therefore various solutions have been proposed to prevent cross-infection of the patient through the use of the stethoscope. [0004] However, past attempts to achieve antimicrobial activity have not maintained the desired level of acoustic sensitivity or antimicrobial activity. Accordingly, there may still be a need for a stethoscope diaphragm that exhibits antimicrobial activity while maintaining its acoustic sensitivity. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B7/00A61B46/10B01J35/00
CPCA61B7/00A61B2017/00889A61B46/10B01J35/39A61B7/02A61B8/4422A61B2562/12B05D1/005C23C14/205C23C14/34
Inventor R·穆克尔吉潘光顾涛周加东
Owner NITTO DENKO CORP