A method for manufacturing a fine hollow protruding article (1) according to the invention involves: a protrusion forming step of bringing a projecting mold part (11) that includes a heating means into contact from one surface (2D) side of a base sheet (2) including a thermoplastic resin, and, while softening, with heat, a contact section (TP) in the base sheet (2) where the projecting mold part (11) contacts the base sheet (2), inserting the projecting mold part (11) into the base sheet (2), to form a protrusion (3) that protrudes from the other surface (2U) side of the base sheet (2); a cooling step of cooling the protrusion (3) in a state where the projecting mold part (11) is inserted in an interior of the protrusion (3); and a release step of withdrawing the projecting mold part (11) from the interior of the protrusion (3) after the cooling step, to form the fine hollow protruding article (1).

Provided are a clear aligner set and an orthodontic treatment method considering resilience of a human body. The clear aligner set may include at least one first clear aligner, having a first restoring force to apply a first pressing force to teeth during a first period, and primarily wearable by an orthodontic patient, at least one second clear aligner, having a second restoring force greater than the first restoring force to apply a second pressing force greater than the first pressing force to the teeth during a second period, and secondarily wearable by the orthodontic patient, and at least one third clear aligner, having a third restoring force greater than the second restoring force to apply a third pressing force greater than the second pressing force to the teeth during a third period, and tertiarily wearable by the orthodontic patient.

A process providing a method to create 3D scaffolds using nano-scale fibers, comprising: deposition and alignment of a plurality of electrospun fiber layers on a substrate; application of a photosensitive biomedical polymer liquid to each fiber layer deposited on said substrate; deposition and cross-alignment of a plurality of electrospun fiber layers on said substrate; retaining said polymer liquid in place using said cross-aligned fiber layers; curing said polymer liquid on top of each fiber layer using UV light.

Novel absorbable polymer blends are disclosed. The blends are useful for manufacturing medical devices having engineered degradation and breaking strength retention in vivo. The blends consist of a first absorbable polymeric component and a second absorbable polymeric component. The weight average molecular weight of the first polymeric component is higher than the weight average molecular weight of the second polymeric component. At least at least one of said components is at least partially end-capped by a carboxylic acid group. Further aspects are medical devices made therefrom.

A device for providing a known concentration of blended air and oxygen, or oxygen, to an individual which incorporates a face mask inside a hood, thereby preventing aerosolization of potentially harmful exhaled gases and controlling condensation issues within the hood while under pressurized conditions. The air tight seal required to allow placement and removal of the hood on the individual will be manufactured using injection molded elastomers to over-mold injection molded rigid plastic components.

Disclosed herein are systems, methods, and computer-readable storage devices for manufacturing patient-specific bolus for use in targeted radiotherapy treatment. Based on dose calculations without a bolus and based on three-dimensional scan data of a patient, the example system generates a model of a bolus for targeting radiotherapy treatment to a planning target volume or target region within the patient. The system can perform several iterations to generate a resulting model for the bolus. Then, the system can generate instructions for controlling a three-dimensional printer to generate the bolus that conforms to the patient's skin surface while also specifically targeting the planning target volume for the radiotherapy treatment. In this way, the amount of radiotherapy treatment administered to other tissue is reduced, while the costs, time, and human involvement in creating the bolus are significantly reduced.

A method of making an article having a desired color, the method comprising the steps of: (a) providing a color array, said array comprising a plurality of distinct color points, each color point being independently composed of a resin mixture comprising one or more masterbatch resins; (b) comparing the desired color with the color points on the color array and selecting a color point that substantially corresponds to the desired color of the article; (c) identifying the resin mixture corresponding to said selected color point; and (d) making the article using said identified resin mixture.

An automated procedure for correcting teeth misalignment in orthodontics using the steps of Generating a 3D digital model of a jaw having the misaligned teeth. Processing the 3D model to generate a corrective plan. Designing a set of corrective elements capable of applying corrective forces to the misaligned teeth through elastic forces. Designing a set of attachments that react to the corrective forces. identifying locations for applying the attachments to the surfaces of the teeth; Bonding the attachments to the identified locations. Rescanning the jaw of the patient and generating a final 3D model of the jaw with aligned teeth. Fabricating the corrective element in accordance with geometry of the final 3D model of the jaw. Applying the corrective element to the teeth wherein. Removing the attachments. A second 3D scan can be made to determine errors, and finite element analysis may be used to determine force vectors.

A dental model, includes (a) an upper segment, the upper segment having a shape corresponding to at least a portion of a dental arch of a human patient; (b) a base segment having an external surface and a bottom surface; (c) at least one internal cavity formed in the base segment, and optionally the upper segment, the at least one internal cavity extending through the bottom surface; and (d) at least one wash channel extending from the external surface of the base segment through the base segment and into the at least one internal cavity.

Welded headgear sections can be produced by using a weld tool having pins protruding from a weld region contact surface to deliver high-frequency electromagnetic energy to a weld region defined by overlapping top and bottom headgear straps. The pins fully penetrate the top strap and at least partially penetrate the bottom strap. The pins concentrate the electromagnetic energy to achieve a weld joint of acceptable weld strength and aesthetic appeal.