Aortic annuloplasty is a surgical procedure aimed at stabilizing the aortic root and restoring valve function in patients with conditions such as aortic regurgitation and aortic root dilation. This technique has gained prominence due to its ability to preserve native valve structures and reduce the long-term risks associated with mechanical valve replacements, such as thromboembolism and the need for lifelong anticoagulation therapy . However, despite these advancements, current monitoring methods mostly is based on postoperative imaging, which challenges the mapping of dynamic mechanical forces acting on the annuloplasty ring during the cardiac cycle. Understanding these details may lead to optimizing repair durability and patient outcomes . Providing real-time biomechanical feedback during and after aortic annuloplasty seems therefore advantageous to refine surgical techniques and improve device features and long-term results. Existing strategies for force measurement and geometry monitoring include in vitro models and force transducers, but these have limitations in long-term chronic in vivo studies and eventually clinical applicability due to their invasive nature and lack of biodegradability . This has driven research toward the development of bioelectronic devices that can integrate seamlessly with the body, offering continuous, real-time monitoring while minimizing risks. Biocompatible and biodegradable materials are critical for such devices, enabling temporary implants that degrade safely without the need for surgical removal. Here, Piezoelectric devices, which generate an electrical response to mechanical stimuli, play a pivotal role in applications such as wearable and implantable sensors, energy harvesting systems, and diagnostic tools . Their ability to convert biomechanical signals into electrical signals enables innovative solutions for monitoring physiological activity, powering transient electronics, and advancing minimally invasive medical devices . Notably, their capacity to harvest energy from natural bodily movements or ambient vibrations removes the need for batteries, making them ideal for long-term use in sustainable and self-sufficient systems. Among these materials, poly-L-lactic acid (PLLA) has emerged as a promising candidate due to its mechanical strength, intrinsic piezoelectric properties, and biodegradability . Unlike traditional piezoelectric materials such as lead zirconate titanate (PZT), which are toxic and non-degradable, PLLA offers a safer and more sustainable alternative for biomedical applications . Polymers like poly(vinylidene fluoride) (PVDF) and its copolymers (e.g., PVDF-TrFE) are frequently employed for their superior piezoelectric performance, but their nondegradability limits their application in transient systems . However, the unprocessed piezoelectric performance of PLLA remains insufficient for many advanced applications. Enhanced piezoelectric properties are achieved through targeted processing techniques such as uniaxial stretching and thermal annealing, which improve dipole alignment and crystallinity As a semi-crystalline polymer, PLLA degrades through ester bond hydrolysis . The degradation process begins with the amorphous regions, which degrade faster than the crystalline domains, resulting in a gradual rise in crystallinity as the material degrades . This bulk erosion mechanism causes predictable degradation, assuring structural stability during its operational period and slow resorption afterward, hence avoiding the need for surgical removal . Importantly, PLLA's degradation rate may be controlled by adjusting its crystallinity, molecular weight, and environmental conditions, making it very adaptable to a variety of medicinal circumstances . This characteristic is especially useful for temporary implants and biosensors, which must perform reliably during key times before safely degrading . Despite its inherent benefits, the piezoelectric performance of unprocessed PLLA remains insufficient for many advanced applications. Enhancing its piezoelectric properties requires targeted processing techniques to induce molecular alignment and optimize crystallinity . Methods such as uniaxial stretching and thermal annealing are particularly effective in promoting the formation of β-phase crystalline structures, which significantly enhance dipole alignment and piezoelectric activity . These processes not only improve piezoelectricity but also enhance the material's mechanical and thermal stability, broadening its applicability in demanding environments .