Application of Medical Textiles | Non-Implantable Medical Textiles
Sajib Chowdhury
Latest posts by Sajib Chowdhury (see all)
- Implantable Medical Textiles | Artificial Ligament | Artificial Skin | Vascular Graft - April 15, 2020
- Application of Medical Textiles | Healthcare / Hygiene Products - February 8, 2019
- Application of Medical Textiles | Extra-Corporal Devices - February 8, 2019
Medical Textile | Classification of Medical Textile | Application of Medical Textiles | Implantable Medical Textiles | Non-Implantable Medical Textiles | Extra-Corporal Devices | Healthcare / Hygiene Products
Application of Medical Textiles | Non-Implantable Medical Textiles
Non-Implantable Medical Textiles:
Implantable medical textiles are used for external applications on body that means those are used outside the human body to assist the recovery of wounds are called non-implantable medical textiles. Non-implantable products are typically used to provide protection against infection, to absorb blood and exudates and to promote healing. The term non-implantable is used generally to indicate surface wound treatments of different parts of the human body.
Polymer fibers which are used for implantable are mentioned in followings:
|
Fiber type |
Application |
Fiber structure |
|
Cotton, viscose, polyesters fiber |
Orthopaedic |
Woven, nonwoven |
|
layer Silk, polyamide fiber, viscose, polyethylene fibers |
Wound contact layer |
Knitted, woven, nonwoven |
|
Cotton, viscose, polyamide fiber, elastomeric-fiber yarns |
Simple inelastic/elastic |
Woven, knitted, nonwoven |
|
Cotton, viscose |
Absorbent pad |
Nonwoven |
|
Cotton, viscose, elastomeric-fiber yarn |
Light support |
Woven, knitted, nonwoven |
|
Viscous plastic film, cotton, polyesters fibers, glass fiber |
Plaster |
Woven, knitted, nonwoven |
|
Cotton, viscous |
Gauzes |
Woven, nonwoven |
|
Viscose, cotton linter, wood pulp |
Wadding |
Nonwoven |
Wound Dressings:
Wound dressings are used in the medical field to provide the critical functions that collectively aim to promote wound healing. These functions are protection, absorption, compression, immobilization and esthetics. Protection is the primary function of wound dressing since exposed wounds can be subjected to further trauma and additional tissue loss caused by external forces (i.e. severe environments, touching objects or direct interaction). Wound dressing acts as a barrier against these forces.
Wound dressings normally consist of three components:
- Contact layer
- Absorbent pad
- Base material
Mechanism:
One of the products is the non-woven alginate fabric. When calcium alginate fibre encounters the sodium ions existing in blood and body exudate, part of it turns into sodium alginate. This process enables a large amount of liquid to be absorbed and retained in the fibre. Eventually, the fibre will turn to gel. This gel is hydrophilic, it permits the oxygen to go through and blocks the bacteria. There has been evidence that alginate wound dressing helps the formation of new tissue.
Wound dressing concept:
A modern wound dressing consists of absorbent layers held between a wound contact layer and a base material. The absorbent layers absorb blood, body fluids and exudates. The wound contact layer is non-adherent and can easily be removed without disturbing new tissue growth.
Bandages:
Those textile products which are used for supporting, holding, assisting to recover wounds of body. Bandage holds the wound care layer in place. Wound care products which are adhesive in nature are also available in the market. The bandage can also be used on standalone basis in case of orthopaedic cases (e.g. crepe bandage).
Various types of bandages along with their functions:
- Simple bandage: hold dressing in place
- Elasticated bandage: provide support & conforming
- Compression bandage: serve as part of the treatment or therapy to the patients. Compression therapy is commonly used to prevent thrombosis, and to treat Lymphoedema, leg ulceration.
- Orthopedic cushion bandage: provide padding and prevent discomfort. This type of bandage is mainly used as cushions to give comfort. They are used under the plaster casts and compression bandages. These are mostly x
- Gauze: serves as absorbent material
- Wadding: prevent wound adhesion
Compression Bandage:
Compression bandages do a good job of compressing a new injury or inflammation and help keep swelling down. This bandage provides special support to help treat venous leg ulcers and manage leg swelling. Compression bandaging is an effective way of healing specific types of ulceration.
Leg ulcer breaks the skin of leg and allows air and bacteria to get into the underlying tissue. Cause of this problem is disease of vein of leg. Blood clots can form in the deep of veins for sitting for a longer period of time. Ultimately this blood clots lead to the ulcer. Compression bandage provides proper pressure to produce a desired clinical effect enabling the control and reduction of swelling in venous leg ulcer.
Plaster:
Fabric plasters are extra flexible and breathable fabric strips. Textile adhesive plaster with a pad is designed for treatment of minor injuries, scrapes, blisters, to cover the injection site, during vaccination or blood sampling. They are also suitable for covering all types of smaller, everyday wounds such as scratches, cuts and grazes. The material stretches with the skin’s movements making them suitable for use over joints and other moveable parts of the body.
Gauzes:
Medical gauze, a bleached white cloth or fabric used in bandages, dressings, and surgical sponges, is the most widely used wound care dressing. Commonly known as “4×4s,” gauze is made from fibers of cotton, rayon, polyester, or a combination of these fibers. Woven gauze has a loose, open weave, which allows fluids from the wound to be absorbed into the fibers, wicked away, or passed through into other absorbent materials in the wound’s dressing. Nonwoven gauze consists of fibers pressed together to resemble a weave, which provides improved wicking and greater absorbent capacity. Compared to woven gauze, this type of gauze produces less lint and has the benefit of leaving fewer fibers behind in a wound when removed.
Medical Textile | Classification of Medical Textile | Application of Medical Textiles | Implantable Medical Textiles | Non-Implantable Medical Textiles | Extra-Corporal Devices | Healthcare / Hygiene Products
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Sajib Chowdhury
Latest posts by Sajib Chowdhury (see all)
- Implantable Medical Textiles | Artificial Ligament | Artificial Skin | Vascular Graft - April 15, 2020
- Application of Medical Textiles | Healthcare / Hygiene Products - February 8, 2019
- Application of Medical Textiles | Extra-Corporal Devices - February 8, 2019
