Key Design Points of Handheld Medical Devices

Key Design Points of Handheld Medical Devices

Compared to general medical devices, handheld medical devices have a wider range of applications, such as meeting diverse patient needs, occupying less space, being easy to maintain, and being portable. Due to the widespread application of handheld medical devices, which have greatly aided medical personnel and patients, many handheld medical devices have begun to expand into new fields, giving rise to a series of products.

In practical applications, these products have not consistently received positive reviews, leading to discussions in society and debates in academia. The key issue lies in the design points of handheld medical devices, which have errors that affect the overall use and subsequent development of these devices.

Characteristics of Handheld Medical Devices

1.1 Safety

The reason handheld medical devices are widely used in daily applications is that these products have a high degree of safety. The application scope of medical devices is very broad, having significant positive implications for medical staff, disabled patients, and research in the medical field. They can objectively change the status of medical work and the lifestyle of patients, elevating them to a new level. As a key component in the field of medical devices, the safety of handheld medical devices is strictly regulated.

First, in the event of a malfunction, handheld medical devices must ensure the safety of the user and not cause accidents.

Second, if a handheld medical device is damaged during daily use, it should prominently indicate the issue, informing the patient that there is a problem to avoid further use.

Third, since the hands of the operators are the primary contact points with handheld medical devices, it is essential to enhance protective measures for the hands to prevent wear and tear or cuts.

1.2 Complexity

Modern medical devices integrate research outcomes from multiple disciplines, leading to complex functionalities and diverse modules. At the same time, the users of medical devices are also diverse; not all users of handheld medical devices are professional medical staff. The user environment surrounding handheld medical device products is not limited to medical personnel. For instance, in a home environment, users are often non-medical professionals or even the patients themselves. They may lack basic medical knowledge and operational skills related to medical devices.

The complexity inherent in handheld medical devices is a core aspect that not only determines the expression of other characteristics but also significantly impacts the practical application of this type of medical device. This study suggests that the complexity of handheld medical devices is not easily grasped. In future work, on one hand, it is necessary to reduce complexity and enhance other characteristics to help handheld medical devices achieve more functionalities; on the other hand, the impacts of complexity must be managed to avoid affecting the design and research and development of handheld medical devices.

Key Design Points of Handheld Medical Devices

2.1 Safety

The market for handheld medical devices is very broad. To further meet the needs of patients, the design process of handheld medical devices must meet specific requirements, commonly referred to as design points, and achieve greater breakthroughs in these design points; otherwise, it will be difficult to meet the demands in real work. Through long-term exploration, it has been found that one of the key design points for handheld medical devices is safety.

The finger pulse oximeter can measure pulse rate and blood oxygen saturation. This device is lightweight and elegantly shaped, allowing measurement results to be obtained in just a few seconds by placing the finger in the middle position. This product is suitable for personal use and for sports enthusiasts, and can also be used for home care and medical purposes. It can connect via Bluetooth to smart devices to synchronize measurement results.

2.2 Shape Design

A key distinguishing feature of handheld medical devices from other medical devices is that they occupy very little space and are primarily operated by hand. In the operation of smaller medical devices, detailed operations often determine the final outcome. Thus, the shape design of handheld medical devices is very important.

First, the shape of handheld medical devices must be compact, enabling operators to quickly identify the purpose of the device. In terms of overall shape, it should stand out, allowing it to be easily located among numerous medical devices.

Second, the colors of handheld medical devices must be distinct, as different colors represent different meanings, and practical application scenarios must be considered. If the lighting is dim, the design of handheld medical devices should use bright colors for emphasis; if the lighting is bright, softer colors should be used. Ultimately, it is essential to consider various situations, especially for colorblind individuals, as the meanings expressed by colors can vary significantly.

Third, the shape design of handheld medical devices must facilitate practical operation. Since this type of medical product is mainly used in delicate surgeries and applications for patients with disabilities, operational performance must meet a high standard while also being resistant to contamination and corrosion, ensuring that no harm comes to patients or medical staff.

2.3 Tactile Design

In addition to the two design points mentioned above, tactile design is also a very important aspect of handheld medical devices. Tactile design primarily allows operators to clearly feel their actions while operating the medical device, ensuring that the force applied is neither too strong nor too weak, thereby avoiding unnecessary impacts.

Tactile design has always been an important aspect of the design of handheld medical devices, often serving as a bottleneck for breakthroughs in design. For example, membrane buttons have become a primary type of lightweight tactile controllers. The functions of the membrane buttons on the pulse oximeter include not only the on/off control in the power supply but also switching functions for other operations: they also feature step control functionality. Taking the pulse oximeter plus as an example, due to the structural functionality of the device itself, the design of the membrane buttons should meet the operational protocols for single-handed use, ensuring that the control keys can be operated with a single finger and that the arrangement of control keys minimizes the occurrence of misoperations. From the above description, it is evident that tactile design will directly impact the daily use, maintenance, and optimization of handheld medical devices, significantly affecting users.

In future work, tactile design must be more user-friendly, enhancing tactile sensitivity on one hand and increasing the prohibition of erroneous operations on the other. Even in the case of erroneous operations, the tactile design should be able to halt all impending issues immediately. In conclusion, this study analyzes the key design points of handheld medical devices. As far as existing handheld medical devices are concerned, they have largely met the needs of medical staff and patients. However, due to the increasing number of patients and the emergence of special cases, some handheld medical devices exhibit deficiencies in performance, necessitating further design enhancements in the future.

In summary, there are numerous design points for handheld medical devices. In design work, it is essential not only to comply with all specifications of the design points but also to enhance the value of handheld medical devices, providing greater assistance to medical staff and patients.

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