跳至主要内容

The Usage Principle of Disposable Surgical Mask

Disposable surgical mask products are used for clinical personnel to wear in the non-invasive operation process, covering the mouth, nose and jaw of the user, to prevent the direct passage of pathogens, microorganisms, particles and other physical barriers.
Disposable surgical mask is self-absorption filter mask, the principle of work is to make the air containing harmful substances through the filter material of the mask to be inhaled or exhaled.There are four main filtration mechanisms of mask filter

Schematic diagram of filtration mechanism of filter material fiber
1. Diffusion deposition: the Brownian motion of particles spreads to the filter fiber and is absorbed by the molecular gravity.
2. Interception deposition: larger particles moving with the airflow are trapped by the mechanical filtration of the filtration material.
3. Inertia deposition: when particles pass through the curved mesh channel of the filter material, the particles break away from the airflow due to the inertia and hit the filter fiber, and are trapped by the molecular gravity.
Electrostatic attraction deposition: deposition of particles by electrostatic action of the filtered fiber.

Disposable surgical mask is composed of SMS three-layer structure, two layers of non-woven fabric fiber diameter is relatively thick, about 20 microns, plays a role in supporting the entire mask structure, the middle melt spray layer fiber is relatively thin, about 2 microns, can filter 95% of bacteria, and SMS three-layer structure has a good ventilation effect.

Disposable medical mask products are composed of medical non-woven fabrics, ear hangers and nose clips.

Mask cover body mechanism

Raw material information sheet

评论

发表评论

此博客中的热门博文

Reference Standard For Seal Verification of Sterilization Pouches For Medical Devices

With the increasing demand for  sterilization pouches  of medical devices, quality and safety inspection have become more and more stringent. sterilization pouches of medical devices (blister box +  tyvek roll  material,  sterilization paper bag , etc.) as a form of packaging directly in contact with the device and used to block microorganisms. No matter what form of packaging, it has two characteristics, which can meet the sterilization operation and remain sterile until the transportation conditions are used. Therefore, relevant departments began to focus on the review requirements of sterile packaging and make specific requirements for its performance and quality.   As we all know, GB/ t19633-2005 "packaging of ultimately sterilized medical devices" is one of the authoritative standards in the current sterile packaging standards. It is equivalent to iso11607-2003 "packaging of ultimately sterilized medical devices". Clarify the basic performance req...
10 条评论
阅读全文

What is Self Seal Sterilization Pouches

  self seal sterilization pouches  is carried out in hospitals and medical or surgical sterilization manufacturing plants. Most packaging must be sterile when delivered to the end user. Medical self seal sterilization pouches provides protective envelopes for sterilization to protect against sterilization during disinfection, transportation, storage and delivery to the final home. Medical self seal sterilization pouches can assemble and secure several sterilization items required for a given surgical procedure and be ready for operation.   The term "sterilization" covers a wide range of products. A cotton ball, a cotton swab, and a tongue spatula are examples of "treatable products." Use them once and throw them away." Use once is not a synonym for cheap. Some very expensive sterilizations, such as dialysis filters, are themselves too fragile to be cleaned and reused after sterilization. To save costs, reuse is desirable. Most medical sterilization, such as sci...
2 条评论
阅读全文

Definition And Use Of Sterilization Or Chemical Indicator

  Sterilization indicator  tape and label   Definition: Wrinkle paper or label paper as the base material, coated with color-changing ink as sterilization indicator, back coated with pressure sensitive adhesive.  The indicating tape used for chemical monitoring outside the pressure steam  sterilization package , when reaching certain sterilization conditions 121℃, 20 minutes or 132℃, 3 minutes, the chemical indicating stripe on the back base of wrinkled paper will change from light yellow to black.   USES:   1. Used to mark whether the package has been treated by pressure steam sterilization process.   2. If the discoloration is uneven or incomplete, it may indicate that the package has not been sterilized in accordance with the conditions.   3, wrap the parcel (if no sealing tape is used).   4, sterilization information can be recorded (operator, sterilization period, item name, pot, etc.).   Chemical instruction card for...
1 条评论
阅读全文