1-Overcome the limitations of light and hardware in the home environment
Uncontrollable lighting: Hospital blood collection rooms usually have bright, shadowless professional lighting, while the light in patients' homes is often dim, warm-toned, and even small, making it difficult for nurses to clearly see the blood vessels with their naked eyes.

The assistance of the imaging device: The portable venous imaging device comes with its own light source and can emit near-infrared light of a specific wavelength, completely unaffected by the ambient light in the home. It can provide nurses with a high-contrast "navigation map" of blood vessels in a dim bedroom or beside a bed.

2.-Overcome the "difficult blood vessels" and increase the rate of incisive response
Patients who need home blood collection are often vulnerable groups who have difficulty going to the hospital, and their vascular conditions are usually poor.
Elderly patients: The blood vessel walls are fragile, have poor elasticity, and are prone to sliding or collapsing.
Children/infants: They have small blood vessels, thick fat layers, and are prone to crying and being uncooperative.
Patients with chronic diseases or severe conditions: such as those who have been bedridden for a long time, have edema, are obese, or frequently undergo chemotherapy (for arteriosclerosis).

The assistance of imaging devices: Nurses no longer need to blindly "explore" or repeatedly touch based solely on experience. The imaging device can directly display the direction, thickness, branches and even the position of the valves of veins, helping nurses precisely select the straightest and healthiest blood vessels for puncture, significantly increasing the success rate of "puncturing with a single needle".

3-Alleviate the anxiety of patients and their families and build trust between doctors and patients
Psychological stress: When invasive procedures are performed in a non-medical environment (at home), patients and their accompanying family members often become even more nervous. Once the first injection fails, the family members' emotions can easily get agitated, leading to complaints.

The assistance of imaging devices: When patients and their families witness high-tech equipment clearly projecting originally invisible blood vessels onto the skin, it will greatly enhance their trust in the professionalism of nurses. The "visualized" process makes family members feel at ease and effectively reduces the cost of doctor-patient communication and the potential risk of friction.

4-Enhance the confidence and efficiency of nurses working alone
Isolated and helpless: When encountering puncture difficulties in the hospital, nurses can call for assistance from senior colleagues at any time. However, home blood collection is usually done by a single person, and the psychological pressure is huge when encountering difficult blood vessels.

The assistance of the imaging instrument: The device is compact in size (usually about the size of a flashlight), can be handheld or used with a portable stand, which greatly enhances the operational confidence of the nurses on duty. Quickly locating blood vessels not only reduces the psychological burden on nurses but also shortens the service time for a single blood collection, thereby enhancing the overall outpatient efficiency of nurses within a day.

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