Kinking-Proof Shell for Blood Pressure Measuring System
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Solution Overview
Problem
Existing blood pressure measuring systems often suffer from wrinkles or kinks at the compression acting surface of the fluid bag, leading to subcutaneous bleeding and reduced measurement accuracy.
Innovation Solution
A blood pressure measuring system with a kinking-proof shell positioned between the pressurization means and the body part, allowing overlapping portions to slide relative to each other, thereby reducing the diameter of the shell and minimizing wrinkles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluid bag is used for pressurization, then the blood pressure measuring system can apply pressure to the body part, but wrinkles or kinks are formed at the compression acting surface leading to subcutaneous bleeding and reduced measurement accuracy
Solution Approach 1:
A textile layer is introduced as an intermediary component between the fluid bag and the body part. This textile layer acts as a mediator that distributes the compression force uniformly across the body part surface, preventing the formation of wrinkles and kinks in the fluid bag while eliminating subcutaneous bleeding. The textile layer maintains contact with the body part and ensures smooth pressure transmission without the harmful effects of direct fluid bag compression.
2Object-affected harmful factors
If a cushion material is placed between the fluid bag and the body part to prevent subcutaneous bleeding, then subcutaneous bleeding is avoided, but the cushion material absorbs and attenuates arterial pressure reducing measurement accuracy
Solution Approach 1:
A textile layer with specific mechanical properties is used instead of traditional cushion materials. The textile layer is designed to be thin and flexible, allowing it to conform to the body part shape while maintaining adequate pressure transmission. The textile's structural characteristics enable it to prevent subcutaneous bleeding through uniform pressure distribution without significantly absorbing or attenuating the arterial pressure signal, thus preserving measurement accuracy.
3Ease of operation
If an outer shell is added to make the system more comfortable and improve positioning reproducibility, then positioning comfort and reproducibility are improved, but the shell may cause kinks at the compression surface
Solution Approach 1:
The textile layer serves as an intermediary between the outer shell and the body part, preventing direct contact and potential kink formation. This intermediate layer allows the shell to provide structural support and positioning stability while the textile layer ensures smooth, uniform pressure application to the body part, eliminating the harmful effect of shell-induced kinks at the compression surface.
Data Source
Figure 1a~2b
Figure 3
Figure 4a~4b
AI summary
The present invention refers to a blood pressure measuring system (10) configured to surround a patient's body part (E), comprising pressurization means (12, 14) for applying pressure to the body part (E), and comprising a kinking-proof shell (20; 30), wherein the kinking-proof shell (20; 30) is arranged so as to be located between the pressurization means (12, 14) and the body part (E), when the blood pressure measuring system (10) surrounds the body part (E). The present invention further refers to a method of applying a blood pressure measuring system (10).