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Medical surgical tape

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In the growing medical equipment industry, the application of pressure-sensitive adhesive tape is everywhere. Pressure sensitive adhesive tape is often the main or even key part of the products used in surgery, wound, incontinence care, monitoring, diagnosis and other aspects. The performance of the final product is also closely related to the performance of pressure-sensitive adhesive tape. Therefore, in the design of medical products, how to select the pressure-sensitive adhesive tape with proper function and excellent performance has become an important topic concerned by the corresponding R & D personnel. This paper briefly summarizes the characteristics of medical pressure-sensitive tape, and introduces the key points of selecting pressure-sensitive tape in the design process from the practical application of three common medical products: disposable surgical towel, ECG electrode and blood glucose test paper.
First, the characteristics of pressure-sensitive adhesive so-called pressure-sensitive adhesive refers to a kind of adhesive sensitive to pressure. The adhesive can be formed by applying a certain amount of pressure to the bonding surface through hands or fingers. The pressure-sensitive adhesive tape is a kind of adhesive tape which is coated on the strip material (such as film, non-woven fabric, foam, etc.) and has pressure-sensitive property after drying. Generally, pressure-sensitive adhesive tape is composed of base material, adhesive layer, release paper, uncoiler, etc.
Compared with other adhesive methods, pressure-sensitive adhesive tape has a series of advantages as follows:
1. The use of pressure-sensitive adhesive tape does not need heating, solvent modulation, mechanical reinforcement and other tedious processes, convenient and fast.
2. Pressure sensitive adhesive tape is easy to store, and the adhesive layer will not dry solid for a long time, so it is also called adhesive.
3. In most cases, the pressure-sensitive adhesive tape can be peeled from the adhered surface without damage, which is also an important advantage of the pressure-sensitive adhesive tape. Because of these unique advantages, pressure-sensitive adhesive tape is widely used in medical products, especially in disposable medical products.
Second, simply list some common applications
• disposable surgical towel;
• wound care products, including transparent dressing, functional dressing, infusion patch, pocket making, etc;
• monitoring products - such as ECG electrode, EEG electrode, blood oxygen probe, etc;
• in vitro diagnostic products - test strips for blood glucose, cholesterol, bilirubin, lipids, etc;
• paste products for external use.
There are some special requirements for pressure-sensitive adhesive tape used in medical products, which need to be considered and realized in the research and development process of pressure-sensitive adhesive tape.
Third, unique medical tape
(1) Safety for medical products, especially those directly or indirectly contacting human body, its safety is mainly reflected in environmental protection, biocompatibility, production process stability and traceability. For the key process parameters, the process capability index (CPK) is usually required to be more than 1.33, and the relevant information such as raw material batch, operators, equipment parameters used for any batch of products can be traced through the lot number, so as to investigate and improve the problems.
(2) The function of functional pressure-sensitive adhesive tape, in short, is to stick well.
For medical pressure-sensitive adhesive tape, there are three main points:
1. Whether the adhesive to the material is enough: when the adhesive tape needs to paste the material to the skin (for example, when it is used for the surgical towel), the adhesive tape shall be able to firmly stick to the skin surface.
2. Whether the adhesion to the skin is appropriate: because most medical adhesive tapes need to be pasted on the skin, they should have appropriate viscosity, rather than the stronger the better the viscosity. 3M clinical research department evaluates the strength and applicability of the adhesive tape to the skin by testing the peel strength of the tape on the skin. (as shown in the figure)
3. Whether it can adapt to the corresponding sterilization methods: different sterilization methods have different effects on product performance. Selecting the materials suitable for the sterilization methods of products is an important part of product design.
(3) With the improvement of medical level, the comfort of comfort medical products has been paid more and more attention by medical staff and patients. For medical products using pressure-sensitive adhesive tape, whether there is pain when they are torn off, whether there is residual adhesive left, how compliant and elastic they are, and whether they are glued or not, are the direct feelings of patients, which are the specific embodiment of the comfort of the tape. How to trans