RU156773U1 - ELECTRIC TOOL FOR INTRODUCING SPOKES TO THE BONE - Google Patents

Abstract

1. A power tool for introducing knitting needles into a bone, characterized in that it comprises a handle body, a tubular guide with a channel for installing the knitting needles, a pin fixing mechanism, a percussion mechanism, a percussion mechanism drive mechanism, a drive mechanism activation button, and the tubular guide is perpendicular to the longitudinal the axis of the handle body, and the channel for installing the needle passes through the percussion mechanism and the handle body, the percussion mechanism comprises a hammer in contact with the cylindrical drummer of the mechanism water installed with the possibility of reciprocating movement in the sleeve, which is fixed in the handle body, the tubular guide is movably mounted in the sleeve, the pin fixing mechanism is located on the outer end of the tubular guide, and its inner end is in contact with the striker and through the shock absorber with the sleeve, the mechanism the drive contains an electric motor with a gearbox, on the output shaft of which an eccentric connected to the pusher is installed, the pusher is connected to a cylindrical impactor, the electric motor is installed n in the handle housing and connected to the power source, the drive mechanism enable button is installed in the handle housing and connected to the power supply circuit of the electric motor. 2. A power tool for introducing knitting needles into a bone according to claim 1, characterized in that the mechanism for fixing the knitting needles is made in the form of a collet clamp.

Description

The field of technology.

The technical solution relates to medical equipment, in particular to an instrument with an electric drive for conducting traumatological and orthopedic surgeries. Designed for insertion into the bone of reinforcing spokes or elastically flexible rods by periodic impact.

The prior art.

Various medical drills are widely known (RU 3685, [1]; RU 2294164, [2]; SU 935091, [3]; SU 1648402 [4]) providing the introduction of spokes into the bone by drilling. These analogues [1, 2, 3, 4] are not intended for the introduction of spokes by periodic impact, do not contain a shock mechanism. Known industrial and household drills - rotary hammers containing a percussion mechanism, allowing for the combined action of rotation and impact on the working end of the tool, drill (RU 2496610, [5]; RU 2543043, [6]). These analogues [5, 6] are not intended for introducing knitting needles by impact, they do not provide a through passage of the knitting needles through the device, and they allow bending of the knitting needle and its deviation from the direction of introduction.

A surgical drill is known from the prior art (RU 2007136, [7]). It contains a housing with a handle (housing-handle), an electric motor (drive mechanism), a cartridge (a locking mechanism for a spoke), a sleeve with a through channel (a tubular guide with a channel for a spoke) installed in the housing. The sleeve is mounted in a housing on bearing bearings and is connected via a gear transmission to an electric motor (drive mechanism), which is placed perpendicular to the axis of the sleeve in the housing handle. The cartridge is mounted on the working end of the sleeve. The design provides a through passage of the spokes through the cartridge and sleeve.

This analogue [7] is structurally close to the claimed technical solution, but it is intended for introducing spokes by the drilling method, it does not provide a percussion mechanism, and does not provide periodic percussion on the spokes when introduced.

The introduction of knitting needles by impact is also known, for example, a device is known for driving a knitting needle through bone tissue by knocking (RU 2115383, [8]). A device for conducting knitting needles through bone tissue contains a hand-held electromagnetic hammer, a bushing for impact, a bushing for attaching the knitting needle and a telescopic guide. It is equipped with an insulator with a cavity for attaching a sleeve for attaching a spoke, made of electrical insulating material and placed in a sleeve for impact.

This analogue [8] does not provide a through passage of the spokes through the device. In this case, the device is made in the form of a nozzle to an electromagnetic hammer, since it does not contain an independent drive mechanism for the percussion mechanism, resulting in a bulky design.

Known surgical tool for processing bones (SU 1466724, [9]). The tool contains a pneumatic motor, the piston of which through the anvil interacts with the working element intended for bone processing. To ensure the possibility of using Kirchner knitting needles as a working element for the purpose of its transverse performance, the surgical instrument is equipped with a removable stabilizer containing a base equipped with means for attaching it to the tool body and having a through hole for installing the working element. A cylindrical stabilizer body is attached to the base. At least three rods mounted parallel to the axis of the cylindrical body are rigidly attached to the base inside the cylindrical body. The rods are interconnected by strung on them and spring-loaded relative to each other by plates, in the central part having guide holes that provide reliable stabilization of the installed working element in them.

This analogue [9] does not provide a through passage of the spokes through the device. The device is made with a pneumatic drive of the shock mechanism, which is inconvenient in the practice of medical institutions, since it is necessary to provide the device with compressed air supply, and requires a source of compressed air, such as a compressor.

Known nozzle to the mechanism for transosseous insertion of needles (SU 1699443, [10]). The nozzle contains a tubular housing with a locking screw for fixing to the mechanism and bushings telescopically mounted in it. In the housing there is a grip made in the form of a rod having a fastening end for placement in the anvil of the mechanism and a working end in which a glass with a collet sleeve is located to accommodate its spokes.

This analogue [10] does not provide a through passage of the spokes through the device. Moreover, the device is made in the form of a nozzle to the percussion mechanism, does not contain an independent drive of the percussion mechanism.

Known pulsed solenoid for insertion into the bone of metal instruments during osteoplastic operations (SU 128109, [11]). It is made in the form of an electromagnetic coil with an iron core striking under the influence of the magnetic field of the coil and spring on the anvil, to the pin of which the instrument introduced into the bone is attached.

This analogue [11] does not provide a through passage of the spokes through the device. A pulse generator is required for the operation of the device.

The closest of the devices for introducing a spoke into a bone by impact, known from the prior art, is a device for driving knitting needles (RU 17881, [12]). The device comprises a housing with a handle (housing-handle), a pneumatic cylinder located in the housing, in which a rod is located at one end of which there is a working piston (percussion mechanism), and on the other a cartridge for clamping a spoke (spoke fixing mechanism). At the front end of the pneumatic cylinder there is a tubular guide, (a tubular guide) and a cylindrical shock absorber. The device includes a channel for installing knitting needles (channel for knitting needles). The device is equipped with a piston-mounted hydraulic chamber integrated in the housing separated from the pneumatic chamber by a piston connected to the hydraulic cavity of the pneumatic cylinder, while the pneumatic cylinder piston is connected to a clip mounted with the possibility of reciprocating movement along the tubular guide (drive mechanism), inside of which the specified cartridge is connected to the trigger-trigger mechanism . The trigger mechanism includes a trigger lever (power button) connected to the specified working piston.

This analogue [12] does not provide a through passage of the spokes through the device. It does not allow for a periodic impact on the knitting needle when it is inserted into the bone, as it provides only one shock impulse aimed at hammering the knitting needle with one blow. The device [12] is made with a pneumatic drive of the shock mechanism, this is inconvenient in practice, since it is necessary to provide the device with compressed air supply, and requires a source of compressed air, for example, a compressor.

Disclosure of the claimed technical solution.

The technical problem, the solution of which the technical solution is directed, is to facilitate the process of introducing reinforcing spokes through a device with an electromechanical drive.

The technical result consists in providing a through passage of the spokes through the device and a joint pushing and periodic impact on not.

The essence of the claimed technical solution lies in the fact that the power tool for introducing the knitting needles into the bone comprises a handle body, a tubular guide with a channel for installing the knitting needles, a knitting mechanism for the knitting needles, an impact mechanism, an impact mechanism drive mechanism, a drive mechanism enable button. In this case, the tubular guide is perpendicular to the longitudinal axis of the handle body, and the channel for installing the spoke passes through the percussion mechanism and the handle body. The percussion mechanism comprises a striker in contact with a cylindrical drummer of the drive mechanism, mounted with the possibility of reciprocating movement in the sleeve, which is fixed in the housing-handle. The tubular guide is mounted movably in the sleeve, the pin fixing mechanism is located on the outer end of the tubular guide, and its inner end is in contact with the striker and through the shock absorber with the sleeve. The drive mechanism contains an electric motor with a gearbox, on the output shaft of which an eccentric connected to the pusher is mounted, the pusher is connected to a cylindrical hammer, the electric motor is installed in the handle housing and connected to the power source, the drive mechanism enable button is installed in the handle housing and connected to the electric motor power circuit .

The above entity is a set of essential features of the claimed technical solution, ensuring the achievement of the claimed technical result.

In this case, the through passage of the needle is ensured by the fact that the channel for installing the spoke is made through, passes through the percussion mechanism and the handle body, this allows the needle to be clamped at the required distance from its sharp end, so when the needle is inserted into the bone, the needle does not bend in the area between fixation mechanism and bone. The possibility of a pushing action on the spoke is ensured by the fact that the tubular guide with a channel for installing the spokes is located perpendicular to the longitudinal axis of the handle body, and is installed in the sleeve, which is fixed in the handle body, the pipe guide on the outer end is equipped with a knitting mechanism. This allows you to hold the needle, hold it and push it into the bone perpendicular to the handle body. The possibility of periodic impact on the spoke is ensured by the fact that the impact mechanism comprises a striker in contact with the cylindrical impactor of the drive mechanism, mounted with the possibility of reciprocating movement in the sleeve, which is fixed in the handle body, the tubular guide is movably mounted in the sleeve, the spoke fixing mechanism is located on the outer end of the tubular guide, and its inner end is in contact with the striker and through the shock absorber with the sleeve, the drive mechanism contains an electric motor a gear with a gearbox, on the output shaft of which an eccentric connected to the pusher is installed, the pusher is connected to a cylindrical hammer, the electric motor is installed in the handle housing and connected to the power source, the drive mechanism enable button is installed in the handle housing and connected to the electric motor power circuit.

The utility model is illustrated by the description and diagrams, which depict:

FIG. 1 - a power tool for introducing knitting needles into a bone, general view;

FIG. 2 - a power tool for introducing knitting needles into a bone, a longitudinal section.

FIG. 3 - a power tool for introducing spokes into the bone, with spaced parts, some elements are shown in section.

FIG. 4 - a mechanism for fixing the knitting needles in a section, an embodiment with a clamping screw.

Implementation of a technical solution.

A power tool for introducing knitting needles into a bone comprises a handle body 1 (Fig. 1; 2; 3), a tubular guide 2 (Fig. 2; 3; 4) with a channel 3 (Fig. 2; 4) for fitting a spoke (elastic-flexible rod) 4 (Fig. 1; 2; 3; 4), locking mechanism 5 (Fig. 1; 2; 3; 4) spokes 4, percussion mechanism 6 (Fig. 2; 3), drive mechanism 7 (Fig. 2 ; 3) the impact mechanism 6, the power button 8 (Fig. 1; 2; 3) of the drive mechanism 7. The tubular guide 2 with a channel 3 for installing a spoke 4 is located perpendicular to the longitudinal axis of the handle body 1. Channel 3 for installing a spoke 4 runs through through the percussion mechanism m 6 and the housing-handle 1. The percussion mechanism includes a hammer 9 (Fig. 2; 3), made in the form of a cylinder equipped with an axial hole 10 (Fig. 2), mounted with the possibility of reciprocating movement in the sleeve 11 (Fig. 1; 2; 3). The sleeve 11 is fixed in the housing handle 1. The housing handle contains a hole 12 (Fig. 3) for the sleeve 11 and the locking screw 13 (Fig. 1; 2; 3). The tubular guide 2 is mounted movably (axial mobility) in the sleeve 11. The locking mechanism 5 of the spokes 4 is located on the outer end 14 (Fig. 2; 3) of the tubular guide 2. The inner end 15 (Fig. 2; 3) of the tubular guide 2 is in contact with the striker 9. Between the inner end 15 and the sleeve 11 is installed a shock absorber 16 (Fig. 2; 3), it can be made in the form of one or more rubber rings. The drive mechanism 7 includes an electric motor 17 (Fig. 2; 3) with a gearbox 18 (Fig. 2; 3), on the output shaft 19 (Fig. 2) of which an eccentric 20 (Fig. 2; 3) is mounted, connected to the plunger 21 ( Fig. 2; 3). The striker 9 is mounted with the possibility of reciprocating movement in the sleeve 11. The striker 9 is reciprocated by the drive mechanism 7, in which the pusher 21 (Fig. 2; 3) is movably connected by a jumper 22 (Fig. 2; 3) to the eccentric 20. In the sleeve 11 also with the possibility of reciprocating movement placed a cylindrical hammer 23 (Fig. 2) of the drive mechanism 7. The hammer 9 and the cylindrical hammer 23 can be contacted. The sleeve 11 is closed by a cover with a hole 24. The electric motor 17 is installed in the housing-handle 1, for this the housing handle 1 contains a seat with a mounting ring 25 (Fig. 2; 3) and screws 26 (Fig. 3). The electric motor 17 is connected to a power source 27 (Fig. 2; 3). The power source 27 can be placed in the handle housing 1 and closed by a cover (not indicated) or can be moved outside the handle housing 1. To charge the power source 27 located in the handle housing 1, a connector 28 can be provided (Fig. 2 ; 3). The power button 8 of the drive mechanism 7 is installed in the handle housing 1 and connected to the power circuit 29 (Fig. 2) of the electric motor 17. In one possible embodiment of the technical solution, the locking mechanism 5 of the spokes 4 is made in the form of a collet clip containing a collet 30 (Fig. 2; 3), a clamping nut 31 (Fig. 2; 3), a thrust nut 32 (Fig. 2; 3). In another possible embodiment of the technical solution, the locking mechanism 5 of the spokes 4 is made in the form of a clamping screw 33 (Fig. 4) mounted perpendicular to the channel 3.

Work description.

The device is used as follows. The spoke 4 from the side of the locking mechanism 5 is inserted into the channel 3, while if the spoke 4 is longer than the length of the channel 3, it passes through the cover with the hole 24. To fix the spoke 4, the clamping nut 31 is tightened, holding the device by the handle body 1 and thrust nut 32, ensuring a tight fit of the collet 30 to the spoke 4. If the locking mechanism 5 is made with the clamping screw 33, the spoke 4 is fixed by tightening the clamping screw 33. When installing and fixing the spoke 4, the distance from its sharp end to the locking mechanism 5 is chosen subject to convenience in SIC needles, preventing its bending. Holding the device by the handle body 1, the sharp end of the knitting needle 4 pierce the soft tissue and reach the bone. The drive mechanism 7 is turned on by pressing the power button 8. The power button 8 closes the power circuit 29 of the electric motor 17, it receives power from the power source 27. The electric motor 17 drives the gearbox 18, on the shaft 19 of which is mounted an eccentric 20. The eccentric 20 receives rotation and carries the jumper 22. The jumper 22 moves the pusher 21 connected to the cylindrical drummer 23, the pusher 21 moves into the groove of the sleeve 11 carries the cylindrical drummer 23. The cylindrical drummer 23 reaches the striker 9 pushes it - transfers the impact th pulse. The firing pin 9 moves in the sleeve 11 hits the inner end 15 of the tubular guide 2. The tubular guide 2 receiving a shock impulse from the firing pin 9 moves and compresses the shock absorber 16. The spoke 4 clamped in the locking mechanism 5 on the outer end 14 of the tubular guide 2 receives a shock pulse and slight movement (by the amount of deformation of the shock absorber 16). The firing pin 9 striking the inner end 15 of the tubular guide 2 bounces in the opposite direction. In this case, the shaft 19 of the gearbox 18 makes one revolution and the cylindrical hammer 23 moves in the direction of the hammer 9. The hammer 9 collides with the cylindrical hammer 23, receives another shock impulse, and moves in the direction of the inner end 15. Then the process is repeated with the frequency set by the rotations of the shaft 19 of the gearbox 18 and the electric motor 17. Holding the device by the handle-body 1, push the spoke 4 clamped in the locking mechanism 5 into the bone. The spoke 4 receives shock impulses through the tubular guide 2. The sharp end of the spoke 4 abuts against the bone, the impact through the body of the spoke 4 reaches its sharp end, under the influence of a shock impulse and longitudinal force (pushing action), the sharp end of the spoke 4 destroys bone tissue. The spoke 4 forms a channel in the bone. The knitting needle 4 is introduced until the contact mechanism of the fixing mechanism of the 5 knitting needles with soft tissues. The power button 8 is turned off. The spoke 4 is released, for this, the clamping nut 31 is loosened by holding the device by the handle body 1 and the thrust nut 32, allowing the collet 30 to be unclenched. If the locking mechanism 5 is made with the clamping screw 33, the spoke 4 is released by loosening the tightening of the clamping screw 33. The device is moved along the spoke 4 to the required distance. The needle is healed again in the fixation mechanism 5. Press the power button 8 and push the needle deeper into the bone. The process is repeated until the spoke 4 is completely immersed in bone and soft tissue.

Industrial applicability.

The claimed technical solution can be implemented in modern industrial production enterprises. Its use in medical practice will facilitate the introduction of reinforcing spokes without drilling, with traumatological and orthopedic surgeries.

Claims (2)

1. A power tool for introducing knitting needles into a bone, characterized in that it comprises a handle body, a tubular guide with a channel for installing the knitting needles, a pin fixing mechanism, a percussion mechanism, a percussion mechanism drive mechanism, a drive mechanism activation button, and the tubular guide is perpendicular to the longitudinal the axis of the handle body, and the channel for installing the needle passes through the percussion mechanism and the handle body, the percussion mechanism comprises a hammer in contact with the cylindrical drummer of the mechanism water installed with the possibility of reciprocating movement in the sleeve, which is fixed in the handle body, the tubular guide is movably mounted in the sleeve, the pin fixing mechanism is located on the outer end of the tubular guide, and its inner end is in contact with the striker and through the shock absorber with the sleeve, the mechanism the drive contains an electric motor with a gearbox, on the output shaft of which an eccentric connected to the pusher is installed, the pusher is connected to a cylindrical impactor, the electric motor is installed n in the handle housing and is connected to the power source, the drive mechanism enable button is installed in the handle housing and connected to the power supply circuit of the electric motor. 2. A power tool for introducing knitting needles into a bone according to claim 1, characterized in that the mechanism for fixing the knitting needles is made in the form of a collet clamp.

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