Write down about the Types of Medical Devices?

Types of Devices

Medical devices can be classified into two major categories- disposables and non-disposables. Disposable devices include bandages, gloves, blood bags, colostomy bags, catheters, syringes, IV kits, and tubing. 

There is a wide spectrum of requirements that apply to materials used in medical device applications. It is important to understand these requirements and design the right part with the right material that fits the intended use and the processing and assembly of the finished device.

Materials used in the design, production, and assembly of medical devices include metals, ceramics, glass, and plastics. The use of plastics continues to grow especially with the growth in disposable products (Figure 1.3).



Plastics have superior design flexibility compared to metals, ceramics, and glass. They can be processed into different shapes, sizes, thickness, and colors. Their properties can be tailored to meet a wide spectrum of physical, mechanical, chemical, and biocompatibility requirements.‖ 

Table 1.1 Summary of Plastics in Medical Device Applications









Property                Commodity Plastics Engineering                     Engineering  

                                                                                                            Thermoplastics

                                                                                                                              High                                                                                                                                      Temp. 

                                                                                                                                             Engineering 

                                                                                                                                 Thermoplastics and 

                                                                                                                                       other polymers

Thermoplastics

High Temp. 

Engineering 

Thermoplastics and 

other polymers

Percent usage in 

medical device 

Applications

70% of all plastics 20% of all plastics 10% of all plastics

Types of 

Plastics

Polyethylene

Polypropylene

Polystyrene

Polyamides

Polyesters

Polycarbonates

Polyimides

Polyether imides

Polysulfones


Polyvinyl chloride Polyurethanes

Acrylics

Acetals

Polyether ether 

ketones

Polyphenylene sulfide

Fluoropolymers

Liq. Crystalline

Polymers

Biopolymers

Thermosets and 

adhesives

Medical Device 

Applications

Tubing

Films

Packaging

Connectors

Labware

I V bags

Catheters

Pacemakers

Drug delivery 

components

Membranes

Sutures

Syringes

Surgical instruments

Balloons

Blood set 

Components

Blood bowls

Blood oxygenators

Syringes

Catheters

Surgical instruments

Surgical trays

Syringes

Implants

Dental implants

Bone implants

Moving part and 

components

Bioresorbable sutures


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