BG3983U1 - High speed electric micromotor with integrated tip - Google Patents

Abstract

High speed electric micromotor with integrated tip, characterizing by the fact that it comprises a actuating shaft (1) placed in a housing (2) and mounted at both ends on bearings (6 and 8), whereby on the one end of the shaft (1) is mounted magnet (5), and at the other end are mounted collet mechanism (7) with collet (14) for attaching a working tool (15), as in the housing (2) are mounted: piston (9) including shaft (1), stator (10) including magnet (5) and bearing socket (11) with contact pins (12), whereby to the housing (2) are mounted a handle (3) and a cap (4), as the handle (3) is connected to the piston (9) by a screw (13) through a screw channel in the housing (2).

Description

The utility model refers to a high-speed electric micromotor with an integrated tip and is used in medicine for surgical interventions requiring rotational movement of the working tool and mechanical intervention on the small bones of the human body. The intended users are qualified specialists - surgeons in hospitals and clinics in neurosurgery, spinal surgery, orthopedics and others.

BACKGROUND OF THE INVENTION

High-speed micromotors are used for these operations, to which handpieces are attached. The connection between them transmits the rotational movement from the micromotor to the handpiece. The connection is provided with technical solutions, original and different for each manufacturer. Thus, handpieces from one manufacturer cannot be mounted on micromotors manufactured by another company. There is no international standard that regulates the connection of the micromotor-tip system used in surgery.

The handpieces used are straight or angled, depending on the operating area. They are joined by various tools designed to work with rotating motion. The rotational movement of the tool is transmitted via the connection of the working tool to the handpiece. This connection must ensure a stable grip of the tool in working condition and its easy release when changing. Handpiece companies use different attachment systems for the work tool and different profiles of its attachment. This requires the use of specific tools specified by the handpiece manufacturers.

In this regard, the disadvantages of these products are:

- lack of interchangeability;

- increased overall dimensions and weight;

- connection between the micromotor and the handpiece, which leads to a risk of impaired functionality.

Technical essence of the utility model

The task of the utility model is to create an integrated system of high-speed micromotor with speeds up to 80,000 min ' ¹ and an actuator that will keep stable and precisely working tools and ensure their rapid replacement.

The problem is solved by the proposed high-speed electric micromotor with integrated tip, which according to the utility model includes a drive shaft mounted in a housing and mounted at both ends on bearings, where a magnet is mounted on one end of the shaft and a collet mechanism is mounted on the other end. with collet for attaching a working tool. In the housing are mounted: a piston covering the shaft, a stator covering the magnet and a bearing socket with contact

BG 3983 UI pins. A handle and a cap are mounted to the housing, and the handle is connected to the piston by a screw through a screw channel in the housing.

According to a variant of the utility model, an angular element is connected to the housing of the high-speed electric micromotor with an integrated tip, through which the contact pins are extended at an angle of 20 ° to the working tool.

The advantages of the proposed high-speed electric micromotor with integrated tip are the following:

• The use of one rotating element - the drive integrated shaft, mounted on two precision high-speed bearings allows for dynamic balancing of the shaft and minimal radial beating of the working tool, which does not interfere with the inaccuracies of two separate products.

• Functional security of the structure due to the reduced number of elements that can compromise the activity.

• Lightweight construction with reduced dimensions, which is compact and convenient to operate.

Explanation of the attached figures

An exemplary embodiment of the utility model is shown in the attached figures, which only illustrate it, but do not limit its scope, where:

Figure 1 shows a schematic diagram of a high-speed electric micromotor with an integrated straight tip in section;

Figure 2 is a schematic diagram of a high-speed electric micromotor with an integrated angle tip in section.

Example of utility model implementation

The proposed high-speed electric micromotor with integrated tip includes an electromagnetic system and an actuator connected by a drive shaft.

According to the attached figure 1, the high-speed electric micromotor with integrated tip consists of a drive shaft 1 mounted in a housing 2 with a handle 3 and a cap 4 mounted on the housing. A magnet 5 and a first (rear) bearing 6 are mounted on the shaft 1 at one end. A collet mechanism 7 and a second (front) bearing 8 are mounted to the shaft 1 at the other end. A piston 9, a stator 10 and a bearing socket 11 with contact pins 12 are mounted in the housing 2.

A magnet 5 mounted on the drive shaft 1 and a stator 10 mounted in the housing 2, which comprises a magnet 5 form the electromagnetic system of the micromotor with extended pins 12 for connection to the power cable.

After these mountings, the shaft 1 is connected to the housing 2 to a bearing 6 in a bearing seat 11. Then the handle 3 is placed and through a screw 13, through a screw channel in the housing 1 is connected to the piston 9. The cap 4 is also connected. which is used to clear the gaps in bearings b and 8 and as a leading part of the working tool.

When moving the handle 3 along the helical channel of the housing 2, the collet 14, which is part of the mango mechanism 7, moves forward and releases the working tool 15, and when moving the handle 3 back along the channel, the collet 14 tightens it. That is, by rotating in one direction of the handle 3, the working tool 15 is held in the collet mechanism 7. In this position of the actuator, the shaft 1 transmits the rotational movement of the working tool 15. When turning the handle 3 in the opposite direction, the collet mechanism 7 releases the working tool 15 and it can be replaced.

According to Figure 2, an angle element 16 is connected to the housing 2 of the high-speed electric micromotor with integrated tip, through which element 16 the contact pins 12 are extended at an angle of 20 ° to the working tool 15. This makes it possible to visually free the working field. operator.

Such a construction of a high-speed electric micromotor with an integrated handpiece leads to the loss of the connection between the micromotor and the handpiece, because they are no longer separate parts. The actuator performs the function of a handpiece and is located on the same shaft with the electromagnetic system of the micromotor, which determines the significant advantages of the model.

Claims (2)

High-speed electric micromotor with integrated tip, characterized in that it comprises a drive shaft (1) mounted in a housing (2) and mounted at both ends on bearings (6 and 8), whereby on one end of the shaft (1) ) a magnet (5) is mounted, and at the other end a collet mechanism (7) with a collet (14) is mounted for fastening a working tool (15), and in the housing (2) are mounted: a piston (9) enclosing a shaft (1). ), a stator (10) enclosing a magnet (5) and a bearing socket (11) with contact pins (12), in which a handle (3) and a cap (4) are mounted to the housing (2), the handle (3) being connected with the piston (9) by means of a screw (13) through a screw channel in the housing (2). High-speed electric micromotor with integrated tip according to claim 1, characterized in that a corner element (16) is connected to the housing (2), through which the element (16) of the contact pins (12) are extended at an angle of 20 ° relative to the working tool (15).