Compression Bandage With Segmented Hook Fastener
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Solution Overview
Problem
Current compression bandages for post-operative breast care are difficult to apply without straining the wound, often slip, cause constrictions, and have limited adjustability of compression pressure, leading to delayed healing and unsatisfactory scars.
Innovation Solution
A compression bandage with a spring constant of 0.3-3 Newtons/cm elongation, featuring a hook tape with complementary soft loops for detachable Velcro, allowing stepless adjustment of compression pressure and reduced risk of creases and constrictions, along with optional resilient rods and hollow spherical segments for improved fit and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If elastic bandages are used for compression, then compression pressure can be applied to the wound area, but the bandages slip, form constrictions, and are difficult to apply without straining the wound
Solution Approach 1:
The bandage is divided into distinct functional zones: a rigid stabilizing section with hook fasteners that remains flat and non-constricting, and elastic compression sections that provide pressure only where needed. This segmentation allows the stabilizing portion to prevent slipping and constriction while the elastic portions deliver compression force.
Solution Approach 2:
Different portions of the bandage have different mechanical properties - the stabilizing section is rigid and flat to prevent constriction, while specific compression zones are elastic to provide localized pressure. The hook fasteners are positioned in stable areas away from the wound to ensure reliable attachment without straining the surgical site.
2Area of stationary object
If elastic bandages are wrapped multiple times around the chest, then compression coverage is improved, but application becomes difficult and requires lifting or straightening the patient which can damage the wound
Solution Approach 1:
The bandage is designed as a single elongated piece with distinct functional sections rather than requiring multiple separate wraps. The stabilizing section with hook fasteners is positioned to anchor the bandage in place, eliminating the need for multiple overlapping wraps and associated patient manipulation.
3Adaptability or versatility
If hook-type fasteners are used on elastic bandages, then fastening flexibility is improved, but the hook poses a risk of injury to the underlying skin area
Solution Approach 1:
The hook fasteners are extracted from the elastic compression zones and placed exclusively in the rigid stabilizing section of the bandage. This separation ensures that hooks are positioned in stable, non-constricting areas away from the wound, eliminating the skin injury risk while maintaining fastening flexibility.
4Ease of operation
If Velcro fasteners with overlapping hook and loop tapes are used, then detachable fastening is achieved, but the active length can only be varied within small limits and compression force cannot be doubled
Solution Approach 1:
The fastening system is segmented into multiple independent hook sections along the stabilizing portion of the bandage. Each hook section can be fastened to the loop tape at different positions, allowing the active compression length to be varied over a wide range and enabling compression force to be doubled or tripled by engaging multiple sections.
5Force
If conventional elastic bandages are used, then compression can be applied, but constrictions and wrinkles form particularly under the Velcro fastener leading to pressure points and skin injuries
Solution Approach 1:
The bandage is segmented into a rigid stabilizing section containing the hook fasteners and separate elastic compression sections. The rigid stabilizing section remains flat and non-constricting where the fasteners are located, eliminating pressure points and skin injuries while the elastic sections provide necessary compression force in appropriate areas.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy application without moving the body part, reduces risk of skin injuries, allows precise adjustment of compression pressure, and ensures even distribution of pressure, promoting faster and more effective healing.
Implementation Method 1
the fabric containing elastic threads running in the longitudinal direction
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to a compression bandage in the form of an elongated rectangle made of a textile fabric on which a hook strip (11) is fastened along a narrow side on a small portion of a lateral face, the hook side (1). The fabric contains elastic threads (2) running in a longitudinal direction and, in the transversal direction, consists of nearly inelastic supporting threads (3). The invention is characterized in that the spring constant in the longitudinal direction ranging, in the order of magnitude of 0.3 (three-tenths) to 3 (three) Newtons per centimeter of longitudinal stretching and per meter length and per decimeter width of the compression bandage, and uniformly distributed small loops (4) made of soft threads are interwoven over the entire area of the lateral face opposite the hook strip, the coating side, these small loops being oriented approximately perpendicular to the lateral face, are complementary in size and distance from one another to the hooks of the hook strip, and with which, together with the hook strip, a releasable hook and loop closure can be formed.