Abstract: In one aspect, a medical device may be configured to couple to a body, the medical device comprising: a substrate configured to couple to a user's skin; a photodetector comprising an array of quantum dots, wherein the array of quantum dots includes a first quantum dot of a first size and a second quantum dot of a second size, wherein the first size is different from the second size; a first illuminator configured to emit light at a first range of wavelengths; and a second illuminator configured to emit light at a second range of wavelengths. The second range of wavelengths may be different from the first range of wavelengths.

Abstract: According to one aspect, a medical device may be configured to couple to a body. The medical device may comprise a material layer; a plurality of adhesive layers coupled to the material layer and configured to couple to a user's skin, wherein each adhesive layer of the plurality of adhesive layers includes a plurality of micro passages; a channel extending between two adjacent adhesive layers of the plurality of adhesive layers; and a superhydrophobic coating covering at least a portion of each of the two adjacent adhesive layers and the material layer forming the channel.

Abstract: A method and a system for cutting the knee joint using a robot. A cantilevered cutter is introduced into the knee joint from inside and outside of upper and lower bones of the knee joint to realize a tunnel cutting technique in which cutting is conducted such that tunnels are defined in bone and remnant bone is cleared. The cutter includes a shaft in which a substantial axial portion is fitted into a sleeve and a remaining axial portion serves as a cantilever extending out of the sleeve, and a head which is formed at a distal end of the shaft. A length of the cantilever and a diameter of the head are determined to have minimum sizes as long as the head can be introduced into bone in such a way as to define a tunnel and can be moved in the bone while cutting the bone.

Abstract: A method and a system for cutting the knee joint using a robot. A cantilevered cutter is introduced into the knee joint from inside and outside of upper and lower bones of the knee joint to realize a tunnel cutting technique in which cutting is conducted such that tunnels are defined in bone and remnant bone is cleared. The cutter includes a shaft in which a substantial axial portion is fitted into a sleeve and a remaining axial portion serves as a cantilever extending out of the sleeve, and a head which is formed at a distal end of the shaft. A length of the cantilever and a diameter of the head are determined to have minimum sizes as long as the head can be introduced into bone in such a way as to define a tunnel and can be moved in the bone while cutting the bone.

Abstract: A method and a system for cutting the knee joint using a robot. A cantilevered cutter is introduced into the knee joint from inside and outside of upper and lower bones of the knee joint to realize a tunnel cutting technique in which cutting is conducted such that tunnels are defined in bone and remnant bone is cleared. The cutter includes a shaft in which a substantial axial portion is fitted into a sleeve and a remaining axial portion serves as a cantilever extending out of the sleeve, and a head which is formed at a distal end of the shaft. A length of the cantilever and a diameter of the head are determined to have minimum sizes as long as the head can be introduced into bone in such a way as to define a tunnel and can be moved in the bone while cutting the bone.