CN211985567U

CN211985567U - Perforating device for orthopedics

Info

Publication number: CN211985567U
Application number: CN201921690246.0U
Authority: CN
Inventors: 隋光善; 潘登; 任永和; 谭维辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-11-24
Anticipated expiration: 2029-10-10

Abstract

The utility model relates to the technical field of orthopedic surgery, in particular to a punching device for orthopedics, which can accurately control the punching depth and comprises a support column, a support plate, a control box, a control worm wheel, a control threaded rod, a control worm, a control handle, a lifting box, a lifting worm wheel, a lifting threaded rod, a lifting worm, a lifting motor, two groups of control plates, a drilling box, two groups of fixed plates, a drilling rod, a drilling motor, two groups of drilling gears and a drilling needle, wherein the left side of the support plate is connected with the top of the support column, the bottom of the control box is fixed at the right end of the top of the support plate, a control cavity is arranged inside the control box, a connecting port is arranged at the bottom of the control box in a communicating way, a support port is arranged at the right side of the support plate and is communicated with the connecting port, the control worm wheel is, the bottom end of the control threaded rod passes through the connecting port and the supporting port and is positioned below the supporting plate.

Description

Perforating device for orthopedics

Technical Field

The utility model relates to the technical field of bone surgery, in particular to a punching device for orthopedics.

Background

As is well known, an orthopedic perforation device is a device for perforating bones in an orthopedic surgery to facilitate treatment of the bones, and is widely used in the field of bone surgery.

Chinese patent No. CN209392028U discloses an orthopedic positioning punch, which is described generally as: the bone drill comprises a fixed seat, the fixing base top sets up the bracing piece, set up the slide cartridge on the bracing piece, set up first connecting rod on the slide cartridge lateral wall, set up first fastener between first connecting rod and the slide cartridge, first connecting rod is kept away from slide cartridge one end and is set up the second connecting rod, second connecting rod and first connecting rod hinge point department set up second fastener, first connecting rod one end is kept away from to the second connecting rod sets up the rotary drum, set up second screw and second fastening bolt on the rotary drum, set up a location section of thick bamboo on the rotary drum, orthopedics location hole puncher still includes the bone drill, the bone drill has the drill point, the drill point passes the rotary drum. When the existing orthopedic positioning puncher is used, the fixing seat fixes the orthopedic positioning puncher on an operating table, and then a drill point punches the bone of a patient.

When the existing orthopedic positioning puncher is used, a doctor is required to judge the punching depth according to experience, so that the punching depth cannot be accurately controlled.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an orthopedics is with perforating device, its control that can be accurate degree of depth of punching.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a perforating device for orthopedics comprises a support column, a support plate, a control box, a control worm wheel, a control threaded rod, a control worm, a control handle, a lifting box, the lifting worm wheel, the lifting threaded rod, the lifting worm, a lifting motor, two sets of control plates, a drilling box, two sets of fixing plates, a drilling rod, a drilling motor, two sets of drilling gears and a drilling needle, wherein the left side of the support plate is connected with the top of the support column, the bottom of the control box is fixed at the right end of the top of the support plate, a control cavity is arranged inside the control box, a connecting port is communicated with the bottom of the control box, a support port is arranged on the right side of the support plate and communicated with the connecting port, the control worm wheel is rotatably connected with the inside of the control box, the control threaded rod is screwed in the control worm wheel, and the bottom, the rear side of the control worm is meshed with the front side of the control worm wheel, the right side of the control box is communicated with a control port, the right end of the control worm passes through the control port and extends out of the control box, the left end of the control handle is fixed at the right end of the control worm, the top of the lifting box is fixed at the right side of the bottom of the supporting plate, a lifting cavity is arranged in the lifting box, the lifting worm wheel is rotatably connected with the bottom of the interior of the lifting box, the lifting threaded rod is screwed in the lifting worm wheel, the bottom of the lifting box is communicated with a lifting port, the bottom of the lifting threaded rod passes through the lifting port and extends out of the lifting box, the rear side of the lifting worm is meshed with the front side of the lifting worm wheel, the lifting motor is fixed in the lifting box, the lifting motor is positioned at the left side of the lifting worm wheel, the left end of the lifting worm is fixed at the output end, the drilling box is positioned below the lifting box, a drilling cavity is arranged inside the drilling box, a fixed port is communicated with the top of the drilling box, the bottom end of the lifting threaded rod is rotatably connected with the fixed port, the tops of the two groups of fixed plates are respectively fixed on the left side and the right side of the bottom of the lifting box, the two groups of fixed plates are respectively contacted with the left side and the right side of the drilling box, the top end of the drilling rod is rotatably connected with the bottom end of the lifting threaded rod, the drilling motor is fixed on the left side inside the drilling box, the drilling motor is positioned on the left side of the drilling rod, one group of drilling gears in the two groups of drilling gears is fixed at the output end of the top of the drilling motor, the middle part of the other group of drilling gears in the two groups of drilling gears is sleeved at the top end of the drilling rod, the two groups of drilling gears are mutually meshed, the bottom of, the top end of the drilling needle is fixed at the bottom end of the drilling rod.

Preferably, the lifting motor is a bidirectional motor.

Preferably, the automatic control device is fixed to the top of the lifting motor and electrically connected with the lifting motor, the two groups of control boards are made of conductive materials, and the automatic control device is electrically connected with the two groups of control boards.

Preferably, the adjustable solar cell further comprises an adjusting box, an adjusting block, an adjusting worm wheel, an adjusting worm, an adjusting threaded rod and an adjusting handle, wherein an adjusting cavity is arranged inside the adjusting box, the top of the adjusting block is fixed at the bottom of the adjusting box, two groups of adjusting openings are respectively arranged at the top and the bottom of the adjusting box, an adjusting groove is arranged in the adjusting block, the top of the adjusting groove is communicated with the bottom of the adjusting opening below, the adjusting worm wheel is rotatably connected with the inside of the adjusting box, the rear side of the adjusting worm is meshed with the front side of the adjusting worm wheel, the adjusting threaded rod is screwed inside the adjusting worm wheel, the bottom of the adjusting threaded rod penetrates through the adjusting opening below and extends into the adjusting groove, the bottom of the supporting column penetrates through the adjusting opening above and is rotatably connected with the top end of the adjusting threaded rod, and a rotating opening is arranged on the left side of, the left end of the adjusting worm penetrates through the rotating opening and extends out of the adjusting box, and the adjusting handle is fixed at the left end of the adjusting worm.

Preferably, still include mounting fixture, two sets of fixed threaded rod and two sets of fixed bolsters, mounting fixture's left side is fixed the right side of regulating block, mounting fixture is horizontal "door" style of calligraphy structure, and mounting fixture's right side is provided with the fixed slot, and mounting fixture's top and bottom are provided with two sets of fixed threaded hole with the fixed slot intercommunication respectively, two sets of fixed threaded rod spiral shell dress are in two sets of fixed threaded hole's inside respectively, two sets of fixed bolsters are fixed respectively on the fixed threaded rod's that is located the top bottom and the fixed threaded rod's that is located the below the fixed threaded rod that is.

Preferably, still include the expansion plate, the bottom left side of expansion plate is fixed the top of support column, the right side of expansion plate is provided with flexible groove, the left side of backup pad and the inside sliding connection in flexible groove.

Preferably, the telescopic plate further comprises a fixing clip, and the fixing clip is fixed on the right side of the telescopic plate.

Preferably, the drilling device further comprises a laser positioner, the bottom of the drilling box is communicated with a positioning hole, and the laser positioner is fixed inside the positioning hole.

(III) advantageous effects

Compared with the prior art, the utility model provides an orthopedics perforating device possesses following beneficial effect:

this perforating device for orthopedics, rotation through control handle drives the control worm and the control worm wheel rotates, thereby highly adjusting the control panel of control threaded rod bottom, then, drive two sets of drilling gear through drilling motor and rotate, thereby make drilling rod and drilling needle rotate at a high speed, then, drive lift worm and lift worm wheel through elevator motor and rotate, thereby make the lift threaded rod descend, thereby make the lift threaded rod drive drilling case and drilling needle descend, when the lift threaded rod descends to the control panel that makes its top and another group control contact each other, stop elevator motor's work, thereby realize the control to drilling needle descending distance, thereby realize the accurate control of drilling needle drilling degree of depth.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a right side view of the present invention;

in the drawings, the reference numbers: 1. a support pillar; 2. a support plate; 3. a control box; 4. controlling the worm gear; 5. controlling the threaded rod; 6. controlling the worm; 7. a control handle; 8. a lifting box; 9. a lifting worm gear; 10. lifting a threaded rod; 11. a lifting worm; 12. a lifting motor; 13. a control panel; 14. drilling a hole box; 15. a fixing plate; 16. drilling a rod; 17. a drilling motor; 18. drilling a gear; 19. drilling a hole needle; 20. an automatic control device; 21. an adjusting box; 22. an adjusting block; 23. adjusting the worm gear; 24. adjusting the worm; 25. adjusting the threaded rod; 26. adjusting the handle; 27. fixing the clamp; 28. fixing a threaded rod; 29. a fixing pad; 30. a retractable plate; 31. fixing the card; 32. a laser locator.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the punching device for orthopedics of the present invention comprises a supporting column 1, a supporting plate 2, a control box 3, a control worm wheel 4, a control threaded rod 5, a control worm 6, a control handle 7, a lifting box 8, a lifting worm wheel 9, a lifting threaded rod 10, a lifting worm 11, a lifting motor 12, two sets of control boards 13, a drilling box 14, two sets of fixing plates 15, a drilling rod 16, a drilling motor 17, two sets of drilling gears 18 and a drilling needle 19, the left side of the supporting plate 2 is connected with the top of the supporting column 1, the supporting plate further comprises a telescopic plate 30, the left side of the bottom of the telescopic plate 30 is fixed at the top end of the supporting column 1, the right side of the expansion plate 30 is provided with an expansion groove, the left side of the support plate 2 is connected with the inside of the expansion groove in a sliding way, the left and right positions of the drilling needle 19 can be adjusted by the extension and retraction of the support plate 2 in the extension plate 30; the telescopic plate is characterized by further comprising a fixing clip 31, wherein the fixing clip 31 is fixed on the right side of the telescopic plate 30, and the left and right positions of the support plate 2 can be fixed through the fixing clip 31; the bottom of the control box 3 is fixed at the right end of the top of the support plate 2, a control cavity is arranged inside the control box 3, the bottom of the control box 3 is communicated with a connector, the right side of the support plate 2 is provided with a support port communicated with the connector, the control worm wheel 4 is rotatably connected with the inside of the control box 3, the control threaded rod 5 is screwed inside the control worm wheel 4, the bottom end of the control threaded rod 5 passes through the connector and the support port and is positioned below the support plate 2, the rear side of the control worm 6 is meshed with the front side of the control worm wheel 4, the right side of the control box 3 is communicated with and provided with a control port, the right end of the control worm 6 passes through the control port and extends out of the control box 3, the left end of the control handle 7 is fixed at the right end of the control worm 6, the top of the lifting box 8 is fixed at the right side of, the lifting worm wheel 9 is rotatably connected with the bottom inside the lifting box 8, the lifting threaded rod 10 is screwed inside the lifting worm wheel 9, the bottom of the lifting box 8 is communicated with a lifting port, the bottom end of the lifting threaded rod 10 penetrates through the lifting port and extends out of the lifting box 8, the rear side of the lifting worm 11 is meshed with the front side of the lifting worm wheel 9, the lifting motor 12 is fixed inside the lifting box 8, the lifting motor 12 is positioned on the left side of the lifting worm wheel 9, and the lifting motor 12 is a bidirectional motor, so that the output end of the lifting motor 12 can rotate bidirectionally, and the drilling rod 16 can ascend or descend; the automatic control device 20 is fixed at the top of the lifting motor, the automatic control device 20 is electrically connected with the lifting motor 12, the two groups of control plates 13 are made of conductive materials, the automatic control device 20 is electrically connected with the two groups of control plates 13, and when the two groups of control plates 13 are in contact, the automatic control device 20 can be started, so that the automatic control device 20 cuts off the power supply of the lifting motor 12, and the lifting motor 12 stops working; the left end of a lifting worm 11 is fixed at the output end of the right side of a lifting motor 12, the two groups of control plates 13 are respectively fixed at the bottom end of the control threaded rod 5 and the top end of the lifting threaded rod 10, the drilling box 14 is positioned below the lifting box 8, a drilling cavity is arranged inside the drilling box 14, the top of the drilling box 14 is communicated with a fixed port, the bottom end of the lifting threaded rod 10 is rotatably connected with the fixed port, the tops of the two groups of fixing plates 15 are respectively fixed at the left side and the right side of the bottom of the lifting box 8, the two groups of fixing plates 15 are respectively contacted with the left side and the right side of the drilling box 14, the top end of the drilling rod 16 is rotatably connected with the bottom end of the lifting threaded rod 10, the drilling motor 17 is fixed at the left side inside the drilling box 14, the drilling motor 17 is positioned at the left side of the drilling rod 16, and one group, the middle part of the other group of drilling gears 18 in the two groups of drilling gears 18 is sleeved at the top of a drilling rod 16, the two groups of drilling gears 18 are meshed with each other, the bottom of a drilling motor 17 is communicated with a drilling hole, the bottom end of the drilling rod 16 is rotationally connected with the drilling hole, the top end of a drilling needle 19 is fixed at the bottom end of the drilling rod 16, a control worm 6 and a control worm wheel 4 are driven to rotate through the rotation of a control handle 7, so that the height of a control plate 13 at the bottom of a control threaded rod 5 is adjusted, then, the two groups of drilling gears 18 are driven to rotate through the drilling motor 17, so that the drilling rod 16 and the drilling needle 19 rotate at high speed, then, a lifting worm 11 and a lifting worm wheel 9 are driven to rotate through a lifting motor 12, so that the lifting threaded rod 10 descends, the lifting threaded rod 10 drives a drilling box 14 and the drilling needle 19 to descend, when the lifting threaded rod 10 descends to enable the control plate 13, stopping the operation of the lifting motor 12, thereby realizing the control of the descending distance of the drilling needle 19 and realizing the accurate control of the drilling depth of the drilling needle 19; the adjustable support column is characterized by further comprising an adjusting box 21, an adjusting block 22, an adjusting worm wheel 23, an adjusting worm 24, an adjusting threaded rod 25 and an adjusting handle 26, wherein an adjusting cavity is arranged inside the adjusting box 21, the top of the adjusting block 22 is fixed at the bottom of the adjusting box 21, two groups of adjusting ports are respectively arranged at the top and the bottom of the adjusting box 21, an adjusting groove is arranged in the adjusting block 22, the top of the adjusting groove is communicated with the bottom of the adjusting port below, the adjusting worm wheel 23 is rotatably connected with the inside of the adjusting box 21, the rear side of the adjusting worm 24 is meshed with the front side of the adjusting worm wheel 23, the adjusting threaded rod 25 is screwed inside the adjusting worm wheel 23, the bottom end of the adjusting threaded rod 25 penetrates through the adjusting port below and extends into the adjusting groove, the bottom end of the support column 1 penetrates through the adjusting port above and is rotatably connected with the top end of the, the left side of the adjusting box 21 is communicated with a rotating port, the left end of the adjusting worm 24 penetrates through the rotating port and extends out of the adjusting box 21, the adjusting handle 26 is fixed at the left end of the adjusting worm 24, the adjusting worm 24 is driven by the adjusting handle 26 to rotate, the adjusting worm 24 drives the adjusting worm wheel 23 and the adjusting threaded rod 25 to rotate, the adjusting threaded rod 25 drives the supporting column 1 to lift, and therefore the initial drilling position of the drilling needle 19 is adjusted by adjusting the height of the supporting column 1; the fixing device is characterized by further comprising a fixing clamp 27, two groups of fixing threaded rods 28 and two groups of fixing cushions 29, wherein the left side of the fixing clamp 27 is fixed on the right side of the adjusting block 22, the fixing clamp 27 is in a transverse door-shaped structure, the right side of the fixing clamp 27 is provided with a fixing groove, the top and the bottom of the fixing clamp 27 are respectively communicated with the fixing groove to be provided with two groups of fixing threaded holes, the two groups of fixing threaded rods 28 are respectively screwed in the two groups of fixing threaded holes, the two groups of fixing cushions 29 are respectively fixed at the bottom end of the fixing threaded rod 28 above and the top end of the fixing threaded rod 28 below, and the fixing clamp 27 can be used for conveniently fixing the device on a supporting device such as an operating table; the drilling device is characterized by further comprising a laser positioner 32, a positioning hole is formed in the bottom of the drilling box 14 in a communicated mode, the laser positioner 32 is fixed inside the positioning hole, and the drilling needle 19 can be assisted to position a drilling position through the laser positioner 32.

When the lifting screw rod 10 is lowered to enable the control plate 13 at the top of the lifting screw rod to be in contact with another group of control, the working of the lifting motor 12 is stopped, the lowering distance of the drilling needle 19 is controlled, and the drilling depth of the drilling needle 19 is accurately controlled.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

In the description herein, it is to be noted that, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or electrical, and may be direct or indirect via an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, it is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A perforating device for orthopedics is characterized by comprising a support column (1), a support plate (2), a control box (3), a control worm wheel (4), a control threaded rod (5), a control worm (6), a control handle (7), a lifting box (8), a lifting worm wheel (9), a lifting threaded rod (10), a lifting worm (11), a lifting motor (12), two groups of control panels (13), a drilling box (14), two groups of fixing plates (15), a drilling rod (16), a drilling motor (17), two groups of drilling gears (18) and a drilling needle (19), wherein the left side of the support plate (2) is connected with the top of the support column (1), the bottom of the control box (3) is fixed at the right end of the top of the support plate (2), a control cavity is arranged inside the control box (3), a connecting port is communicated with the bottom of the control box (3), a support port is arranged at the right side of the support plate (, the support port is communicated with the connection port, the control worm wheel (4) is rotatably connected with the inside of the control box (3), the control threaded rod (5) is screwed in the control worm wheel (4), the bottom end of the control threaded rod (5) penetrates through the connection port and the support port and is positioned below the support plate (2), the rear side of the control worm (6) is meshed with the front side of the control worm wheel (4), the right side of the control box (3) is communicated with the control port, the right end of the control worm (6) penetrates through the control port and extends out of the control box (3), the left end of the control handle (7) is fixed at the right end of the control worm (6), the top of the lifting box (8) is fixed at the right side of the bottom of the support plate (2), a lifting cavity is arranged in the lifting box (8), the lifting worm wheel (9) is rotatably connected with the bottom of the inside of the lifting box (8), and the lifting threaded rod (10) is screwed in the lifting worm (9), the bottom of the lifting box (8) is communicated with and provided with a lifting port, the bottom of a lifting threaded rod (10) penetrates through the lifting port and extends out of the lifting box (8), the rear side of a lifting worm (11) is meshed with the front side of a lifting worm wheel (9), the lifting motor (12) is fixed inside the lifting box (8), the lifting motor (12) is located on the left side of the lifting worm wheel (9), the left end of the lifting worm (11) is fixed at the output end of the right side of the lifting motor (12), the two sets of control plates (13) are fixed at the bottom end of the control threaded rod (5) and the top end of the lifting threaded rod (10) respectively, the drilling box (14) is located below the lifting box (8), a drilling cavity is arranged inside the drilling box (14), a fixing port is communicated with the top of the drilling box (14), the bottom end of the lifting threaded rod (10) is rotatably connected with the fixing port, and the tops of the two sets of fixing plates (15) are fixed on the left side and laterally, two groups of fixed plates (15) are respectively contacted with the left side and the right side of the drilling box (14), the top end of the drilling rod (16) is rotationally connected with the bottom end of the lifting threaded rod (10), the drilling motor (17) is fixed on the left side inside the drilling box (14), the drilling motor (17) is positioned on the left side of the drilling rod (16), one drilling gear (18) of the two groups of drilling gears (18) is fixed at the output end of the top of the drilling motor (17), the middle part of the other drilling gear (18) of the two groups of drilling gears (18) is sleeved on the top of the drilling rod (16), the two groups of drilling gears (18) are mutually meshed, the bottom of the drilling motor (17) is communicated with a drilling hole, the bottom end of the drilling rod (16) is rotatably connected with the drilling hole, and the top end of the drilling needle (19) is fixed at the bottom end of the drilling rod (16).

2. The perforating device for orthopedics department of claim 1, characterized in that, the lifting motor (12) is a bidirectional motor.

3. The perforating device for orthopedics department according to claim 2, characterized in that, further comprises an automatic control device (20), the automatic control device (20) is fixed on the top of the lifting motor (12), the automatic control device (20) is electrically connected with the lifting motor (12), both sets of control boards (13) are made of conductive materials, and the automatic control device (20) is electrically connected with both sets of control boards (13).

4. The perforating device for the orthopedics department according to claim 1, characterized in that the perforating device further comprises an adjusting box (21), an adjusting block (22), an adjusting worm wheel (23), an adjusting worm (24), an adjusting threaded rod (25) and an adjusting handle (26), wherein an adjusting cavity is arranged inside the adjusting box (21), the top of the adjusting block (22) is fixed at the bottom of the adjusting box (21), two groups of adjusting ports are respectively arranged at the top and the bottom of the adjusting box (21), an adjusting groove is arranged inside the adjusting block (22), the top of the adjusting groove is communicated with the bottom of the adjusting port positioned below, the adjusting worm wheel (23) is rotatably connected with the inside of the adjusting box (21), the rear side of the adjusting worm (24) is meshed with the front side of the adjusting worm wheel (23), the adjusting threaded rod (25) is screwed inside the adjusting worm wheel (23), and the bottom end of the adjusting threaded rod (25) passes through the adjusting port positioned below and extends into the inside of the adjusting groove, the bottom of support column (1) is passed the regulation mouth that is located the top and is rotated with the top of adjusting threaded rod (25) and be connected, the left side intercommunication of regulating box (21) is provided with the mouth that rotates, the left end of adjusting worm (24) is passed and is rotated the mouth and stretch out regulating box (21), adjust handle (26) and fix the left end at adjusting worm (24).

5. The perforating device for orthopedics department of claim 4, characterized by further comprising a fixing clamp (27), two sets of fixing threaded rods (28) and two sets of fixing pads (29), wherein the left side of the fixing clamp (27) is fixed on the right side of the adjusting block (22), the fixing clamp (27) is in a transverse 'door' -shaped structure, a fixing groove is formed in the right side of the fixing clamp (27), two sets of fixing threaded holes are respectively formed in the top and the bottom of the fixing clamp (27) and communicated with the fixing groove, the two sets of fixing threaded rods (28) are respectively screwed in the two sets of fixing threaded holes, and the two sets of fixing pads (29) are respectively fixed at the bottom end of the fixing threaded rod (28) located above and at the top end of the fixing threaded rod (28) located below.

6. The perforating device for orthopedics department according to claim 1, characterized by further comprising a retractable plate (30), wherein the bottom left side of the retractable plate (30) is fixed on the top end of the supporting column (1), the right side of the retractable plate (30) is provided with a retractable groove, and the left side of the supporting plate (2) is slidably connected with the inside of the retractable groove.

7. The perforating device for orthopedics department according to claim 6, characterized in that it further comprises a fixing clip (31), said fixing clip (31) is fixed on the right side of said expansion plate (30).

8. The perforating device for orthopedics department of claim 1, characterized in that, still include laser locator (32), the bottom of drilling case (14) is provided with the locating hole in intercommunication, laser locator (32) fix in the inside of the locating hole.