CN217066563U

CN217066563U - Orthopedic screw extractor

Info

Publication number: CN217066563U
Application number: CN202220042899.3U
Authority: CN
Inventors: 赵飞; 张弥
Original assignee: Shiyan Taihe Hospital
Current assignee: Shiyan Taihe Hospital
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-07-29
Anticipated expiration: 2032-01-10

Abstract

The utility model discloses an orthopedic screw extractor, including the device casing, device casing top surface is provided with driving motor, set up the lead screw in the device casing, the driving motor output passes device casing top with the lead screw links to each other, lead screw surface threaded connection has the spiro, spiro surface fixed connection has the slide bar, the device casing antetheca sets up vertical sliding opening, the slide bar front end runs through the sliding opening, the slide bar front end is rotated and is connected with the steering pole, the steering pole tail end is provided with micro motor, the micro motor output is connected with gets the pin fin. This orthopedics screw extractor adjusts through lead screw structure and gets the nail height, starts flexible around the hydraulic pressure push rod to drive the connecting rod and remove and make the socket drive transfer to pole synchronous motion, transfer to the pole through rotating and for getting the nail angle at socket internal rotation angle, make things convenient for doctor's operation, realize getting the nail operation of multi-angle regulation.

Description

Orthopedic screw extractor

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to an orthopedic screw extractor.

Background

Bone nails are non-active surgical metal implants for osteosynthesis, consisting of cortical (full and half-threaded) and cancellous (full and half-threaded) bone nails, used for stabilizing new fractures, revision surgeries, arthrodesis, and reconstructing ossicles of the foot, ankle and toe, etc. Can be used for adult and pediatric patients.

However, the bone nail cannot be installed on a human body for a long time and needs to be taken out after being restored to a proper degree, but the bone nail is complex in structure and can be closely linked with the bone due to long-term placement of the bone nail, the nail taking angle is inconvenient to adjust when the existing nail taking equipment is used for taking out the bone nail, and the nail taking process is also troublesome.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides an orthopedics screw extractor possesses the multi-angle and adjusts and get the nail, and the above-mentioned technical problem has been solved to the advantage of the medical personnel of being convenient for operation.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an orthopedic screw extractor, includes the device casing, device casing top surface is provided with driving motor, set up the lead screw in the device casing, the driving motor output passes device casing top with the lead screw links to each other, lead screw surface threaded connection has the spiro, spiro surface external fixed connection has the slide bar, device casing antetheca sets up vertical sliding opening, the slide bar front end runs through sliding opening, the slide bar front end is rotated and is connected with the steering rod, the steering rod tail end is provided with micro motor, the micro motor output is connected with gets the pin fin.

As an embodiment of the utility model provides a, the slide bar middle part is provided with the holding chamber, the holding intracavity is provided with hydraulic push rod, the slide bar front end is provided with the spout, slide in the spout and be provided with the connecting rod, hydraulic push rod's output connect in the connecting rod, be provided with circular socket on the connecting rod, the accent is provided with the bull stick rear side, the bull stick rotate insert in the socket.

Furthermore, the end of the connecting rod is screwed with a locking knob, and the locking knob is communicated with the socket.

As one of the embodiment of the utility model, the micro motor sliding connection in the tail end of transfer to the pole, and can follow the transfer to the pole and slide from top to bottom.

Specifically, the tail of the steering rod is provided with a vertical groove, the micro motor is provided with a sliding piece, and the micro motor is connected to the vertical groove in a sliding mode through the sliding piece.

Furthermore, a spring is arranged in the vertical groove of the direction adjusting rod, the upper end of the spring is connected to the top of the vertical groove, and the lower end of the spring is connected to the sliding piece.

As one of the embodiments of the present invention, a handle is disposed on one side wall of the housing of the device.

Compared with the prior art, the utility model provides an orthopedic screw extractor possesses following beneficial effect:

1. this orthopedics screw extractor adjusts through the lead screw structure and gets the nail height, starts hydraulic push rod and stretches out and draws back around to drive the connecting rod and slide around the spout is inboard, move through the connecting rod and make the socket drive transfer to the pole top synchronous motion, transfer to the pole through rotating and for getting the nail angle, fixed transfer to utilize micro motor to drive behind the pole to get the pin fin and rotate and get the nail operation.

2. This orthopedics screw extractor through set up vertical groove at the slide bar tail end to set up the spring in vertical groove and link to each other with micro motor, thereby at the screw back-out in-process, get the pin fin and keep pushing down to the screw and get nail pressure when, micro motor can with get the pin fin and rise along with the screw back-out together, thereby make and get the nail process more smooth.

Drawings

FIG. 1 is a schematic front sectional view of the overall structure of the present invention;

FIG. 2 is a perspective view of the slide bar structure of the present invention;

fig. 3 is a schematic perspective view of the connecting rod structure of the present invention.

Wherein: 1. a device housing; 101. a grip; 2. a drive motor; 3. a through hole; 4. a sliding port; 5. a lead screw; 6. a spiro ring; 7. a slide bar; 701. a chute; 702. a hydraulic push rod; 703. a connecting rod; 704. a socket; 8. a direction adjusting rod; 9. a micro motor; 10. taking out the nail head.

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, an orthopedic screw extractor includes a device housing 1, a driving motor 2 is disposed on a top surface of the device housing 1, a through hole 3 is disposed on the top surface of the device housing 1, an output end of the driving motor 2 penetrates through the through hole 3 and enters the device housing 1, a lead screw 5 is disposed in the device housing 1, the output end of the driving motor 2 is connected to the lead screw 5, a spiral ring 6 is connected to an outer surface of the lead screw 5, a sliding rod 7 is connected to an outer surface of the spiral ring 6, a sliding opening 4 is disposed on a front wall of the device housing 1, a front end of the sliding rod 7 penetrates through the sliding opening 4 and is located outside the device housing 1, a direction adjusting rod 8 is rotatably connected to a front end of the sliding rod 7, a micro motor 9 is disposed at a tail end of the direction adjusting rod 8, and an output end of the micro motor 9 is connected to a screw taking head 10.

Before taking the nail, a doctor firstly exposes the operation vision field through the operation to determine a nail taking path, when in use, the rotating position of the direction adjusting rod 8 and the nail taking path are firstly in the same straight line, the nail taking height of the whole device is adjusted through the driving motor 2, the direction adjusting rod 8 is rotated to enable the nail taking head 10 at the output end of the micro motor 9 to be matched with the head of the bone nail, and then the micro motor 9 is started to utilize the nail taking head to screw out the bone nail.

In order to realize the lateral movement of the nail head 10, thereby increasing the use convenience of the orthopedic screw extractor. Referring to fig. 1 to 3, further, a containing cavity is disposed in the middle of the sliding rod 7, a hydraulic push rod 702 is fixed in the containing cavity, a transverse sliding groove 701 is disposed in the front of the sliding rod 7, a connecting rod 703 is disposed in the sliding groove 701, the connecting rod 703 can slide in the sliding groove 701, an output end of the hydraulic push rod 702 is connected to a rear end of the connecting rod 703, and the hydraulic push rod 702 can stably push the connecting rod 703 to slide in the sliding groove 701. The front surface of the connecting rod 703 is provided with a through circular socket 704, the socket 704 is a circular through hole penetrating through the front and back surfaces of the connecting rod 703, correspondingly, the back surface of the steering rod 8 is provided with a circular rotating rod, the rotating rod is matched with the socket 704, and the rotating rod can pass through the socket 704 and can freely rotate in the socket 704. Thus, the direction-adjusting rod 8 can realize the position transverse movement and the rotation angle adjustment.

At the front end tip position of connecting rod 701, be provided with a screw hole that link up with socket 704, this screw hole sets up the direction and sets up the direction mutually perpendicular with socket 704, and the screw hole internal rotation is equipped with a locking knob, and after the angle adjustment is accomplished in socket 704 to pole 8, can rotate locking knob to transfer to pole 8 and carry out spacing fixed, avoid removing to get to change to pole 8 angle in the nail working process and influence and get the nail.

In the process of taking out the orthopedic screw, the screw head 10 needs to keep a certain pressure on the screw; the screw is upwards screwed out in the screw taking process, if the screw is longer in length, the screw can push the screw taking head 10 and the micro motor 9 to move upwards in the screw taking process, and the screw taking head 10 keeps the pressure on the screw when the screw is taken in order to offset the rising height of the screw. The utility model is provided with a vertical groove at the tail end of the steering rod 8, the vertical groove can be provided with a bottom end face of the steering rod 8 which is arranged upwards to form a through vertical groove, and can also be arranged at the lower side of the steering rod 8, correspondingly, a sliding part is arranged at the head or the side of the micro motor 9, the sliding part is arranged in the vertical groove in a sliding way, and the sliding part can drive the micro motor 9 to move up and down along the vertical groove; simultaneously, in order to keep getting the pressure of screw when nailing, be provided with a spring at the interior roof of vertical groove, the upper end of spring is fixed in vertical inslot roof, and the lower extreme of spring is connected in this slider, and from this, when orthopedics screw upwards unscrewed at the nail of getting in-process, the spring compression, the compression elasticity of spring makes and gets pin head 10 and bone nail and agree with the position closely continuous, can not take place the slippage, and the bone nail also makes simultaneously and gets pin head 10 and micro motor 9 rebound at the in-process that rises.

In order to operate conveniently, the utility model discloses an orthopedic screw extractor, the utility model discloses a lateral wall at device casing 1 still is provided with handle 101, is convenient for operate the doctor and grips and operate.

When using, the doctor opens the sword earlier and confirms orthopedics screw and takes out the route, then holds handle 101 and pick up device casing 1 wholly, also can utilize structures such as support will the utility model discloses an extractor is placed fixedly and is made to get the nail process more stable. A doctor firstly enables a direction adjusting rod 8 and a taking-out path to be located on the same plane, a lead screw 5 is driven to rotate positively and negatively through a driving motor 2, so that the initial height of taking out nails of the device is adjusted, the direction adjusting rod 8 on a connecting rod 703 is driven to a preset position through a hydraulic push rod 702, a compression spring rotates the direction adjusting rod 8 to a preset angle and fixes the direction adjusting rod 8 through a locking knob, a spring is released to enable a nail taking head 10 to move downwards to be matched with the head of an orthopedic screw to be taken, a micro motor 9 is started to enable the nail taking head 10 to drive the orthopedic screw to be screwed out, and the nail taking-out process is completed.

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. An orthopedic screw extractor which is characterized in that: including device casing (1), device casing (1) top surface is provided with driving motor (2), set up lead screw (5) in device casing (1), driving motor (2) output passes device casing (1) top with lead screw (5) link to each other, lead screw (5) surface threaded connection has spiro (6), spiro (6) surface fixed connection has slide bar (7), device casing (1) antetheca sets up vertical sliding opening (4), slide bar (7) front end runs through sliding opening (4), slide bar (7) front end rotates and is connected with steering rod (8), steering rod (8) tail end is provided with micro-motor (9), micro-motor (9) output is connected with gets pin fin (10).

2. An orthopedic screw extractor as claimed in claim 1, wherein: the middle part of the sliding rod (7) is provided with an accommodating cavity, a hydraulic push rod (702) is arranged in the accommodating cavity, the front end of the sliding rod (7) is provided with a sliding groove (701), a connecting rod (703) is arranged in the sliding groove (701) in a sliding manner, the output end of the hydraulic push rod (702) is connected to the connecting rod (703), a circular socket (704) is arranged on the connecting rod (703), a rotating rod is arranged on the rear side of the steering rod (8), and the rotating rod is rotatably inserted into the socket (704).

3. An orthopedic screw extractor as claimed in claim 2, wherein: the end of the connecting rod (703) is screwed with a locking knob which is communicated with the socket (704).

4. An orthopedic screw extractor as claimed in claim 1, wherein: the micro motor (9) is connected to the tail end of the direction adjusting rod (8) in a sliding mode and can slide up and down along the direction adjusting rod (8).

5. An orthopedic screw extractor as claimed in claim 4, wherein: the tail of the direction adjusting rod (8) is provided with a vertical groove, a sliding piece is arranged on the micro motor (9), and the micro motor (9) is connected to the vertical groove in a sliding mode through the sliding piece.

6. An orthopedic screw extractor as claimed in claim 5, wherein: a spring is arranged in a vertical groove of the direction adjusting rod (8), the upper end of the spring is connected to the top of the vertical groove, and the lower end of the spring is connected to the sliding piece.

7. An orthopedic screw extractor as claimed in claim 1, wherein: a handle (101) is arranged on one side wall of the device shell (1).