Abstract: An exemplary embodiment of the present disclosure provides compositions and methods of using compositions. A composition described herein comprises a hydrogel, a therapeutic species, and a linker joining the hydrogel to the therapeutic species. The linker joining the hydrogel to the therapeutic species comprises a Diels-Alder cyclo-addition reaction product. Some aspects of this disclosure relate to methods of delivering a therapeutic species to a subject. The method comprises disposing the composition in the subject and initiating a retro Diels-Alder reaction to decompose the Diels-Alder cyclo-addition product, thereby severing the linker and decoupling the therapeutic species from the hydrogel.

Abstract: The present technology is directed to methods of soft tissue emulsification using a mechanism of ultrasonic atomization inside gas or vapor cavities, and associated systems and devices. In several embodiments, for example, a method of non-invasively treating tissue includes pulsing ultrasound energy from the ultrasound source toward the target site in tissue. The ultrasound source is configured to emit high intensity focused ultrasound (HIFU) waves. The target site comprises a pressure-release interface of a gas or vapor cavity located within the tissue. The method continues by generating shock waves in the tissue to induce a lesion in the tissue at the target site. The method additionally includes characterizing the lesion based on a degree of at least one of a mechanical or thermal ablation of the tissue.

Abstract: The present technology is directed to methods of soft tissue emulsification using a mechanism of ultrasonic atomization inside gas or vapor cavities, and associated systems and devices. In several embodiments, for example, a method of non-invasively treating tissue includes pulsing ultrasound energy from the ultrasound source toward the target site in tissue. The ultrasound source is configured to emit high intensity focused ultrasound (HIFU) waves. The target site comprises a pressure-release interface of a gas or vapor cavity located within the tissue. The method continues by generating shock waves in the tissue to induce a lesion in the tissue at the target site. The method additionally includes characterizing the lesion based on a degree of at least one of a mechanical or thermal ablation of the tissue.