CN210903060U

CN210903060U - Improved C-shaped arm positioning device

Info

Publication number: CN210903060U
Application number: CN201921249441.XU
Authority: CN
Inventors: 刘乃玺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-07-03
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses an improved C-shaped arm positioning device, belonging to the field of medical apparatus and instruments, comprising a base, a lifting column, a supporting arm, a telescopic shaft, an arc A and an arc B, wherein both ends of the arc A and the arc B are provided with perspective devices, namely an image intensifier, an integrated bulb tube and a beam limiter; the outer side of the image intensifier is provided with a guiding device which is driven by a linear motor. The advantages are that: the linear motor effectively drives the sliding cylinder to move up and down, so that the connecting rod and the sleeve are driven to move up and down until the axes of the guide rod, the sliding cylinder, the sleeve and the pedicle borer are superposed, and the first axis is determined by one-time positioning; the axis of the ray emitted by the beam limiter in the integrated bulb tube is superposed with the axis of the image intensifier, and the axis is a second axis which can be determined after the ray emitting and receiving device is started; the first axis and the second axis are overlapped to assist in determining the screw feeding position of the pedicle drill, and the sleeve is close to one end of the image intensifier, so that the perspective magnification is reduced, and the drilling precision is improved. Meanwhile, the positioning times are reduced, and the efficiency is improved.

Description

Improved C-shaped arm positioning device

Technical Field

The utility model relates to a hospital's bone surgery auxiliary assembly field, especially a modified C shape arm positioner.

Background

The current intraoperative fluoroscopy devices commonly used in clinical applications are "C" arm X-ray machines, and "G" arm X-ray machines. The C-shaped arm X-ray machine can rotate, but cannot simultaneously see through the right position and the side position; the G-shaped arm can simultaneously see through the right position and the side position, but the position is fixed and can not rotate. Bring inconvenience for the operation like this, just because inconvenient, manual pedicle of vertebral arch screw of putting into causes the error easily, according to statistics, has an observation to divide into three groups to the doctor: the nail placement experience is less than 2 years, 2-5 years, and more than 5 years. Under the condition without navigation technology, the error rates of the pedicle screws of the three doctors are very close to each other and are all about 10% -12%. Therefore, the dural sac and nerve roots in the vertebral canal are easily injured by mistake, and serious complications such as paralysis, cerebrospinal fluid leakage and the like are caused, so that the pain is brought to the patient, and the doctor-patient relationship is tense.

Patent document 201505146U discloses a kirschner wire axial projection positioning device, which utilizes a circular tube guide rail and a right-angle bracket to movably connect a kirschner wire and a driving electric drill thereof with a bulb tube of a C fluoroscopy machine, so that the kirschner wire and the driving electric drill thereof can freely move up and down, left and right, and back and forth, and the axial lines of the kirschner wire and the driving electric drill thereof are always parallel to the axial line of the bulb tube in the moving process, thereby simplifying the positioning operation of the kirschner wire. When the device is used, the right-angle bracket is obliquely arranged on the C-shaped arm perspective machine, the lower part of the right-angle bracket carries the driving electric drill, and the right-angle bracket is easy to incline downwards under the action of gravity, so that the axis of the bottom of the right-angle bracket deviates from the ray emitted by the bulb tube, and the positioning precision is reduced. Meanwhile, the electric drill moves up and down to insert the needle, the right-angle bracket 5 needs to move up and down, the locking device cannot be used, manpower is not mechanical, the vertical part of the right-angle bracket is used as an axis, the distance from the axis to the electric drill 7 of the horizontal part of the right-angle bracket is used as a radius, and the electric drill swings along an arc-shaped curve, so that the axis of the position where the electric drill is located is displaced.

Patent document CN103784155A discloses an X-ray real-time imaging device, wherein the first C-shaped arm is slidably disposed on the second C-shaped arm, the second C-shaped arm is slidably disposed on the supporting device, the first motor 9 drives the first C-shaped arm 1 and the arc-shaped slider 8 to slide along the arc-shaped guide rail 7, and the second motor 11 drives the second C-shaped arm 2 to move along the C-arm slide rail 10. Before the first C-shaped arm and the second C-shaped arm are used for carrying out X-ray angle positioning, the second C-shaped arm needs to slide firstly, and then the first C-shaped arm needs to slide.

Patent document CN106175917A, discloses a sliding cross perspective orthopedic pedicle screw implantation auxiliary device, guiding devices are arranged on the outer sides of the first beam limiter and the second beam limiter respectively, each guiding device comprises a guiding rod, a sliding cylinder, a connecting rod and a sleeve, the sleeve is also provided with a pedicle borer, the bottom of the guide rod is connected to the outer side of the integrated bulb tube of the A arc and the B arc and is superposed with the axis of the beam limiter at the inner side of the integrated bulb tube, the guide rod penetrates through the sliding cylinder, and the sliding cylinder can move along the guide rod, and the sliding cylinder can be locked on the guide rod, one end of the connecting rod is connected to the sliding cylinder, the other end of the connecting rod is connected to the sleeve, the guide rod, the sliding cylinder, the sleeve and the pedicle hole borer have the same axis, and the axis of the guide rod coincides with the central axis of the beam limiter, the ray source and the receiving device. The guiding devices are arranged on the outer sides of the first beam limiter and the second beam limiter, so that the position and the precision of the ray transmitting device can be adjusted conveniently, and the receiving device cannot be adjusted according to positioning requirements and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the improved C-shaped arm positioning device which improves the positioning precision and reduces the fault damage is provided.

The utility model provides a technical scheme that its technical problem adopted is: modified C shape arm positioner includes a base and the lift post of setting on the base, its characterized in that: the top end of the lifting column is also provided with a supporting arm, a telescopic shaft is arranged in the supporting arm, one end of the telescopic shaft is connected with a first driving device, the other end of the telescopic shaft is connected with an arc A, and the first driving device can drive the telescopic shaft to stretch and rotate; a second driving device is arranged at the joint of the arc A and the telescopic shaft, an arc B is arranged between the second driving device and the arc A, and the second driving device can drive the arc B to rotate along the arc A; the bottom of the lifting column is also provided with a third driving device which can drive the lifting column to lift and rotate;

both ends of the A arc and the B arc are provided with perspective devices, namely an image intensifier, an integrated bulb tube and a beam limiter;

a first image intensifier is arranged at the left end of the arc A, a first integrated bulb tube and a first beam limiter are arranged at the right end, and the axis of the first beam limiter is superposed with the axes of the first integrated bulb tube and the first image intensifier; a second image intensifier is arranged at the upper end of the B arc, a second integrated bulb tube and a second beam limiter are arranged at the lower end of the B arc, and the axis of the second beam limiter is the same as the axis of the second integrated bulb tube and the axis of the second image intensifier;

the guide device comprises a guide rod, a sliding cylinder, a connecting rod and a sleeve, the sleeve is also provided with a pedicle hole drilling device, the bottom of the guide rod is connected to the outer sides of the image intensifiers of the A arc and the B arc, the axis of the guide rod is superposed with the axis of the beam limiter in the integrated spherical tube, the guide rod penetrates through the sliding cylinder and can move along the guide rod, the sliding cylinder can be locked on the guide rod, one end of the connecting rod is connected to the sliding cylinder, the other end of the connecting rod is connected to the sleeve, the axes of the guide rod, the sliding cylinder, the sleeve and the pedicle hole drilling device are the same, and the axes of the guide rod, the sliding cylinder, the sleeve and the pedicle hole drilling device are superposed with the central axes of the beam limiter, the integrated spherical tube and the image intensifiers; the B arc is used for indicating the direction of the introduced nail, and the A arc prevents the introduced nail from being too deep.

Preferably, the sliding cylinder is driven by a motor and moves up and down along the guide rod, so as to drive the connecting rod and the sleeve to move.

Preferably, the motor is a linear motor, the output shaft of the linear motor is a screw rod, a rotary table is sleeved on the screw rod, and the rotary table is connected to the sliding cylinder through a driving block.

The utility model has the advantages that: the linear motor effectively drives the sliding cylinder to move up and down, so that the connecting rod and the sleeve are driven to move up and down until the axes of the guide rod, the sliding cylinder, the sleeve and the pedicle borer are superposed, and the first axis is determined by one-time positioning; the axis of the ray emitted by the beam limiter in the integrated bulb tube is superposed with the axis of the image intensifier, and the axis is a second axis which can be determined after the ray emitting and receiving device is started; the first axis and the second axis are overlapped to assist in determining the screw feeding position of the pedicle drill, and the sleeve is close to one end of the image intensifier, so that the perspective magnification is reduced, and the drilling precision is improved. Meanwhile, the positioning times are reduced, and the efficiency is improved.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is an enlarged view of the guide device.

Fig. 3 is a schematic view of the positioning of the arcus vertebrae.

Fig. 4 is a structural view of the elevating device.

Fig. 5 is a cutaway view of the lifting device.

Labeled as:

1. a base; 2. a lifting column; 3. a support arm; 4. a telescopic shaft; 5. a first driving device; 6. arc A;

7. a second driving device; 8. b arc; 9. a third driving device; 10. a lifting device; 101. a slideway; 102. a slide bar; 1021. a horizontal portion; 1022. a vertical portion; 103. a rack; 104. a gear; 105. a lifting motor; 106. a speed reducer; 107. a connector; 11. an image intensifier; 12. an integrated bulb tube; 13. a beam limiter; 111. a first image intensifier; 121. a first integrated bulb; 131. a first beam limiter; 112. a second image intensifier; 122. a second integrated bulb; 132. a second beam limiter; 14. a guide device; 141. a guide bar; 142. a sliding cylinder; 143. a connecting rod; 144. a sleeve; 145. a pedicle drill; 146. a motor; 147. a screw rod; 148. a turntable; 149. the block is driven.

Detailed Description

The present invention will be further explained with reference to the embodiments of the drawings.

Example one

As shown in fig. 1-5: the improved C-shaped arm positioning device comprises a base 1 and a lifting column 2 arranged on the base 1, wherein a supporting arm 3 is further arranged at the top end of the lifting column 2, a telescopic shaft 4 is arranged in the supporting arm 3, one end of the telescopic shaft 4 is connected with a first driving device 5, the other end of the telescopic shaft is connected with an A arc 6, and the first driving device 5 can drive the telescopic shaft 4 to stretch and rotate; a second driving device 7 is arranged at the joint of the arc A6 and the telescopic shaft 4, an arc B8 is arranged between the second driving device 7 and the arc A6, and the second driving device 7 can drive the arc B8 to rotate along the arc A6; a third driving device 9 is further arranged at the bottom of the lifting column 2, and the third driving device 9 can drive the lifting column 2 to lift and rotate;

two ends of the A arc 6 and the B arc 8 are respectively provided with a perspective device, namely an image intensifier 11, an integrated bulb 12 and a beam limiter 13;

a first image intensifier 111 is movably connected to the left end of the A arc 6, a first integrated bulb 121 and a first beam limiter 131 are arranged at the right end, and the axis of the first beam limiter 131 is overlapped with the axes of the first integrated bulb 121 and the first image intensifier 111; a second image intensifier 112 is movably connected to the upper end of the B arc 8, a second integrated bulb 122 and a second beam limiter 132 are arranged at the lower end of the B arc, and the axis of the second beam limiter 132 is the same as the axis of the second integrated bulb 122 and the axis of the second image intensifier 112;

the guide device 14 is arranged outside the first image intensifier 111 and the second image intensifier 112, the guide device 14 comprises a guide rod 141, a sliding cylinder 142, a connecting rod 143 and a sleeve 144, the sleeve 144 is also provided with a pedicle drill 145, and the bottom of the guide rod 141 is connected outside the image intensifiers of the A arc 6 and the B arc 8, namely outside the first image intensifier 111 and the second image intensifier 112. The axis of the guide rod 141 is coincident with the axis of the beam limiter 13 in the integrated bulb 12, the guide rod 141 penetrates through the sliding cylinder 142, the sliding cylinder 142 can move along the guide rod 141, the sliding cylinder 142 can be locked on the guide rod 414, one end of the connecting rod 143 is connected to the sliding cylinder 412, the other end of the connecting rod is connected to the sleeve 144, the guide rod 141, the sliding cylinder 142, the sleeve 144 and the pedicle hole drilling device 145 have the same axis, and the axis of the connecting rod is coincident with the central axis of the beam limiter 13, the integrated bulb 12 and the image intensifier 11; the B arc 8 is used for indicating the direction of nail introduction, and the A arc 6 prevents the nail from being introduced too deeply.

The sliding cylinder 142 is driven by a motor 146 to move up and down along the guide rod 141, thereby moving the connecting rod 143 and the sleeve 144.

The motor 146 is a linear motor, the output shaft of the linear motor is a screw rod 147, a turntable 148 is sleeved on the screw rod 147, and the turntable 148 is connected to the sliding cylinder 142 through a driving block 149.

The left end of the arc A and the first image intensifier 111, and the upper end of the arc B and the second image intensifier 112 are connected by adopting a lifting device 10. The lifting device 10 comprises a slide way 101 and a slide bar 102 sleeved in the slide way, wherein the slide bar 102 is of an L-shaped structure and comprises a horizontal part 1021 and a vertical part 1022, the horizontal part 1021 is connected to the image intensifier 11, the vertical part is provided with a rack 103, a gear 104 is arranged in the slide way 101, and the gear 104 and the rack 103 are mutually meshed; a lifting motor 105 and a speed reducer 106 are arranged outside the slide way 101 and are in transmission connection with the gear 104 as a power mechanism.

A connector 107 is arranged on one side of the slideway 101 and is vertical to the lifting motor 105, and the connector 107 is connected with the tail ends of the A arc 6 and the B arc 8.

The lifting motor 105 and the reducer 106 drive the gear 104 and the gear rack 103 to rotate, so as to drive the sliding rod 102 to move up and down along the slideway 101, thereby realizing the up-and-down movement of the image intensifier 13 and facilitating the adjustment of the upper and lower positions thereof.

A linear motor is a transmission device that directly converts electric energy into mechanical energy for linear motion without any intermediate conversion mechanism. The rotary motor can be seen as being formed by cutting a rotary motor in the radial direction and expanding the rotary motor into a plane. Therefore, the linear motor can effectively drive the sliding cylinder to move up and down, so as to drive the connecting rod and the sleeve to move up and down until the axes of the guide rod 141, the sliding cylinder 142, the sleeve 144 and the pedicle drill 145 are superposed, and the axis is a first axis determined by one-time positioning; the axis of the ray emitted by the beam limiter 13 in the integrated bulb tube 12 is superposed with the axis of the image intensifier 11, and the axis is a second axis which can be determined after the ray emitting and receiving device is started; the first axis and the second axis are overlapped, the screw feeding position of the pedicle drill is determined in an auxiliary mode, and the drilling precision is improved. Meanwhile, the positioning times are reduced, and the efficiency is improved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. Modified C shape arm positioner includes a base and the lift post of setting on the base, its characterized in that: the top end of the lifting column is also provided with a supporting arm, a telescopic shaft is arranged in the supporting arm, one end of the telescopic shaft is connected with a first driving device, the other end of the telescopic shaft is connected with an arc A, and the first driving device can drive the telescopic shaft to stretch and rotate; a second driving device is arranged at the joint of the arc A and the telescopic shaft, an arc B is arranged between the second driving device and the arc A, and the second driving device can drive the arc B to rotate along the arc A; the bottom of the lifting column is also provided with a third driving device which can drive the lifting column to lift and rotate;

a first image intensifier is movably connected to the left end of the arc A, a first integrated bulb tube and a first beam limiter are arranged at the right end, and the axis of the first beam limiter is overlapped with the axes of the first integrated bulb tube and the first image intensifier; a second image intensifier is movably connected to the upper end of the B arc, a second integrated bulb tube and a second beam limiter are arranged at the lower end of the B arc, and the axis of the second beam limiter is the same as the axis of the second integrated bulb tube and the axis of the second image intensifier;

2. The improved C-arm positioning device of claim 1, wherein: the sliding cylinder is driven by a motor and moves up and down along the guide rod, so that the connecting rod and the sleeve are driven to move.

3. The improved C-arm positioning device of claim 2, wherein: the motor is a linear motor, the output shaft of the linear motor is a screw rod, a rotary table is sleeved on the screw rod, and the rotary table is connected to the sliding cylinder through a driving block.

4. The improved C-arm positioning device of claim 1, wherein: and the left end of the A arc is connected with the first image intensifier, and the upper end of the B arc is connected with the second image intensifier by adopting a lifting device.

5. The improved C-arm positioning device of claim 4, wherein: the lifting device comprises a slide way and a slide rod sleeved in the slide way, wherein the slide rod is provided with a rack, a gear is arranged in the slide way, and the gear and the rack are mutually meshed; and a lifting motor and a speed reducer are arranged outside the slide way and are in transmission connection with the gear as a power mechanism.

6. The improved C-arm positioning device of claim 5, wherein: the sliding rod is of an L-shaped structure and comprises a horizontal part and a vertical part, the horizontal part is connected to the image intensifier, and the vertical part is provided with a rack.

7. The improved C-arm positioning device of claim 5, wherein: slide one side, perpendicular to elevator motor still is equipped with the connector, the connector is connected at A arc, B arc end.