5 results about "Extraction site" patented technology

The utility model provides a novel invisible orthodontic appliance for integrally adducting anterior teeth in a tooth extraction case, which comprises a bracket-free invisible orthodontic appliance body, the thickness of a rear tooth area of the bracket-free invisible orthodontic appliance body is increased by 0.1-0.25 mm on the basis of the original uniform thickness, the thickness of a distal surface of a second molar is increased by 0.15-0.25 mm, and the thickness of the rear tooth area of the bracket-free invisible orthodontic appliance body is increased by 0.1-0.25 mm on the basis of the original uniform thickness of the bracket-free invisible orthodontic appliance body. According to the bracket-free invisible orthodontic appliance body, a falling prevention piece is designed at a tooth extraction position of the invisible orthodontic appliance, the falling prevention piece is wider in a position close to an occlusal surface and narrower in a position close to a gum, and the size of the falling prevention piece is matched with the change of a gap of the tooth extraction position. According to the application, the back tooth area is thickened on the basis of the original uniform thickness, and the distal surface of the second molar is thickened, so that the anchorage of the back tooth area can be enhanced, and meanwhile, as for the inclination of adjacent teeth in the tooth extraction gap, the anti-collapse piece which is wider in the position close to the occlusal surface and narrower in the position close to the gum is designed at the tooth extraction position; therefore, when the dental crowns of the adjacent teeth on the two sides incline towards the tooth extraction gap, the anti-tilting piece can generate an inclination resisting effect. According to the invention, through the optimal design of the accurate non-uniform thickness, the correction efficiency of the tooth extraction case can be improved.

The utility model discloses an auxiliary device convenient for blood drawing, which relates to the technical field of medical instruments and comprises a box body and a fitting groove arranged in the middle of the upper surface of the box body, the inner surface of the fitting groove is rotatably connected with a hand supporting plate, and the left side of the upper surface of the box body is provided with a functional groove. A storage groove is formed in the right side of the upper surface of the box body, a rotating seat is rotationally connected to the rear side of the inner surface of the functional groove, and a deformable rod is fixedly connected to the outer surface of the rotating seat. Compared with an existing common auxiliary device facilitating blood drawing, when the auxiliary device facilitating blood drawing is used for assisting blood drawing, the elbow of a person receiving blood drawing can be placed on the hand supporting plate and the attaching groove, the arm of the person receiving blood drawing can be conveniently placed at a proper position, the blood vessel developing lamp can irradiate the blood drawing part, and the blood drawing effect is improved. And the locking mechanism can achieve better fixing and storage effects, and the auxiliary blood drawing device is convenient to transfer, store and unfold for use.

This application discloses a tissue fluid extraction device, relating to the field of health monitoring technology. The device includes an alternating current source and electrodes. The output terminal of the alternating current source is connected to the electrodes and is used to output a preset number of predetermined alternating current signals to the electrodes at preset time intervals. The preset time interval is greater than 0, and the preset number of signals is greater than or equal to 2. The electrodes are used to apply electrical stimulation corresponding to the alternating current signal output by the alternating current source to the tissue fluid extraction site, causing the tissue fluid to be released at the extraction site under electrical stimulation. This tissue fluid extraction device enables non-invasive tissue fluid extraction.

A device and method for extracting material during a medical procedure, such as biopsy, drainage, surgery, ablation or any procedure involving extraction of unwanted material from an extraction site at a human or animal body. The device may also be used to deliver a material to a delivery site. The device comprises: a tubular member having a lumen and a series of radially inward projections extending into the lumen; and a shaft movably disposed within the lumen of the tubular member and having a series of radially outward protrusions extending into the lumen.

The present invention relates to a device adapted to facilitate transport of a biopsy sample from a sterile extraction site to laboratory-type equipment by which the biopsy sample is processed, while maintaining the biopsy sample wetted and sterile and automatically transferring the biopsy sample from the device to the laboratory-type equipment.