RU222560U1 - 3D LIMBS SCANNER - Google Patents

Abstract

The utility model relates to medical equipment, in particular to devices that are used for additive technologies, namely obtaining information from an object with further data processing and the formation of a 3D model. It can be used for its intended purpose in the field of orthopedics and traumatology. The three-dimensional limb scanner includes a movable scanning part, on which at least 10 laser range sensors are installed, a stepper motor on the elbow part, and the hand part. In this case, the stepper motor is connected to a single-throw trapezoidal screw through a compensating coupling, and the hand and elbow parts are connected to each other by a polished shaft. The movable scanning part is installed on a trapezoidal single-thread screw through a trapezoidal nut with a flange. The technical result is an increase in the scanning area, as well as a change in the installation of laser ranging sensors. 1 ill.

Description

The utility model relates to medical equipment, in particular to devices that are used for additive technologies, namely obtaining information from an object with further data processing and the formation of a 3D model. It can be used for its intended purpose in the medical field, namely in the field of orthopedics and traumatology, for commercial and public institutions.

There is an analogue of the scanning device published in the collection [Bezrukovy A.M., Vanin V.A., Kagramanov E.E. Development of a three-dimensional scanner of human limbs // Materials of the X International Scientific and Practical Conference. In 3 parts. Volume Part 1. Autonomous non-profit organization “National Research Institute of Continuing Professional Education” (ANO “NII DPO”). - Moscow: Limited Liability Company "Press Center", 2022. -P.185-190]. A three-dimensional scanner of human limbs, which consists of an elbow part through which the arm is placed, then a movable scanning part with lasers, and a hand part. The control unit, which is responsible for transmitting data from lasers and the movement of stepper motors, is installed on the elbow part. The moving and scanning part with lasers is moved along the object along the guides.

The disadvantage is the limited scanning area.

The technical effect of the proposed utility model is to achieve an increase in the scanning area, as well as obtain a clear and proportionate model. For this, at least 10 laser ranging sensors are used, which are installed on seats located on the movable scanning part, which moves forward along the entire length of the scanned object, taking into account the reverse motion.

The technical effect achieved by the proposed three-dimensional scanning device also consists in expanding the scanning area and optimizing the labor-intensive process of taking precise dimensions. To obtain the most accurate information, at least 10 laser ranging sensors were used. They operate in a voltage range from 2.6 to 5.5 V. The device records the received values from the sensors and transmits the data for further computer modeling.

The ranging sensors used have small overall parameters, but the length over which the laser beam is emitted can reach up to 2 m. The data obtained by laser rangefinders, which have a scatter of readings from 0.5 mm to 3 mm, regardless of the reflectivity of the object surface, and also with a small error (up to ±3%). This device is convenient to use as a stationary piece of medical equipment.

The claimed utility model is illustrated with the help of Fig. 1, which shows a 3D limb scanner. In fig. 1 positions 1-14 indicate:

1 - carpal part;

2 - movable scanning part;

3 - elbow part;

4 - support for the hand part;

5 - stiffener;

6 - support for the elbow part (left);

7 - support for the elbow part (right);

8 - laser ranging sensors;

9 - stepper motors;

10 - trapezoidal nut with flange;

11 - compensating couplings;

12 - single-thread trapezoidal screws;

13 - bearings;

14 - polished shafts.

This technical effect is achieved in a three-dimensional scanning device containing in its collapsible body: 1 - hand part, 2 - movable scanning part, 3 - elbow part; As a connecting part of the structure, support segments are used: 4 - support for the hand part, 6 - support for the elbow part (left), 7 - support for the elbow part (right). Also, the parts that perform the load-bearing function of the entire block include: a stiffener 5, used to eliminate backlash and increase the rigidity of the scanning and moving part 2; 14 - polished shafts are used to connect the hand part 1 and the elbow part 3, as well as for the smooth movement of the movable scanning part 2; 10 - trapezoidal nuts with a flange are used to move the movable scanning part 2 along the trapezoidal screws 12; 13 - bearings serve to slide trapezoidal screws 12; 11 - compensating couplings are used to connect stepper motors 9 with trapezoidal screws 12. According to the utility model, 8 - laser ranging sensors are installed on the movable scanning part 2.

The work is carried out as follows: laser ranging sensors 8, installed on the movable scanning part 2, scan the object, moving along polished shafts 14 and trapezoidal screws 12 by rotating the trapezoidal screws 12 by stepper motors 9. The essence of the operation of these laser ranging sensors 8 is as follows: they release infrared rays that reach the surface of the object, then the rays are reflected and the lengths of these rays are recorded. The movable scanning part 2 in a forward motion passes the entire length of the scanned object, taking into account the reverse motion, for the further compilation of a clear and proportionate model of the scanned limb or object. The design of the device in question is adapted to the anatomical structure of the human limb. The result obtained is displayed on devices such as a smartphone, tablet or PC using a computer program.

Thus, the implementation of this useful model made it possible to expand the scanning area through the use of at least 10 laser ranging sensors.

Claims (1)

A three-dimensional limb scanner, including a hand part, a movable scanning part with range sensors, an elbow part and stepper motors installed on the elbow part, characterized in that the stepper motors are connected to trapezoidal screws through compensating couplings, the hand and elbow parts are interconnected by polished shafts, the movable scanning part is mounted on trapezoidal screws using trapezoidal nuts with flanges with the ability to move along polished shafts and at least ten laser ranging sensors are installed on it.

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