With a greater boost in the development of technology, the healthcare industry has had a huge development in terms of offering innovative diagnoses and services to patients. Healthcare has become an indispensable resource in the daily lives of humans leading to a huge innovation in the healthcare sector. To improve the efficiency of diagnosis and with the potential to offer better treatment to patients, the healthcare industry has adopted numerous technologies such as the internet of things (IoT), machine learning, blockchain, etc., to pave way for sustainability in the medicinal sector. These systems, though very advanced, have some drawbacks; like problems of security and privacy of medical data that can expose these records to threats of privacy, and loss of data through manhandling of records and data transactions resulting in delays, while the patient is being monitored. etc., which can pose a major threat to the patient's well-being. This paper will provide how a blockchain network in any IoT-based device can help in the preservation of these medical records, using suitable algorithms.