阅读说明：本技术 一种多功能体外髓内钉瞄准架 (Multifunctional in-vitro intramedullary nail aiming frame ) 是由 陈永兵 曹刚 陆军 陆伟 石碧 于 2019-11-19 设计创作，主要内容包括：本发明公开了一种多功能体外髓内钉瞄准架,特点是包括依次连接的手持部、调节部和套筒；套筒上套接髓内钉连接头,髓内钉连接头内设置内螺纹；瞄准器的一端连接调节部,另一端延伸到套筒上方并设置瞄准口；调节部设置调节旋钮和调节蜗杆,调节蜗杆穿过调节部和套筒并与调节部和/或套筒旋转连接,调节蜗杆的一端连接调节旋钮,另一端设置外螺纹,设置外螺纹的一端伸出套筒与髓内钉连接头通过内螺纹连接。本发明的有益效果是利用内外螺纹的传动连接关系使髓内钉在轴向上进行微调,调节精度高,髓内钉连接头的外六角形结构方便髓内钉在径向上的角度调节,用于多种规格髓内钉的瞄准安装；手持部和调节部内部连通,减轻瞄准架重量。(The invention discloses a multifunctional in-vitro intramedullary nail aiming frame which is characterized by comprising a handheld part, an adjusting part and a sleeve which are sequentially connected; an intramedullary nail connector is sleeved on the sleeve, and internal threads are arranged in the intramedullary nail connector; one end of the sighting device is connected with the adjusting part, and the other end of the sighting device extends to the upper part of the sleeve and is provided with a sighting port; the adjusting part is provided with an adjusting knob and an adjusting worm, the adjusting worm penetrates through the adjusting part and the sleeve and is rotationally connected with the adjusting part and/or the sleeve, one end of the adjusting worm is connected with the adjusting knob, the other end of the adjusting worm is provided with an external thread, and one end of the external thread extends out of the sleeve to be connected with the intramedullary nail connector through the internal thread. The invention has the advantages that the intramedullary nail is finely adjusted in the axial direction by utilizing the transmission connection relation of the internal thread and the external thread, the adjustment precision is high, the external hexagonal structure of the intramedullary nail connector is convenient for the angle adjustment of the intramedullary nail in the radial direction, and the intramedullary nail connector is used for aiming and mounting of intramedullary nails with various specifications; the handheld part is communicated with the inside of the adjusting part, so that the weight of the aiming arm is reduced.)

1. A multifunctional in vitro intramedullary nail aiming frame comprises an aiming device and is characterized by further comprising a handheld part, an adjusting part and a sleeve which are sequentially connected; an intramedullary nail connector is sleeved on the sleeve, and internal threads are arranged in the intramedullary nail connector; one end of the sighting device is connected with the adjusting part, and the other end of the sighting device extends to the upper part of the sleeve and is provided with a sighting port; the adjusting part is provided with an adjusting knob and an adjusting worm, the adjusting worm penetrates through the adjusting part and the sleeve and is rotationally connected with the adjusting part and/or the sleeve, one end of the adjusting worm is connected with the adjusting knob, the other end of the adjusting worm is provided with an external thread, and one end of the external thread extends out of the sleeve and is connected with the intramedullary nail connector through the internal thread.

2. The multifunctional in vitro intramedullary nail aiming frame of claim 1, wherein: the section of the adjusting part is in an H-shaped cylindrical structure, the adjusting knob is arranged on a transverse axis, and the adjusting knob is provided with equally-divided grooves.

3. The multifunctional in vitro intramedullary nail aiming frame of claim 2, wherein: the intramedullary nail connector is of an external hexagon, and the size of the intramedullary nail connector is matched with the internal hexagon inside the intramedullary nail.

4. The multifunctional in vitro intramedullary nail aiming frame of claim 3, wherein: the intramedullary nail connector is provided with a separation blade, and when the intramedullary nail connector is inserted into an intramedullary nail, the insertion depth is limited.

5. The multifunctional in vitro intramedullary nail aiming frame of any one of claims 1 to 4, wherein: the handheld portion is a hollow cylinder with two through ends, and the adjusting portion is communicated with the handheld portion.

Technical Field

The invention belongs to the technical field of medical instruments, particularly relates to an aiming frame, and particularly relates to a multifunctional in-vitro intramedullary nail aiming frame.

Background

At present, the intramedullary nail is mainly used for treating the fracture clinically, the technology has little influence on the fracture broken end, and the fracture broken end can be pressurized, so that the intramedullary nail has a plurality of advantages. In the operation of installing intramedullary nail for treating fracture, aiming frames and screw sleeves are needed for driving screws and locking screws on the intramedullary nail. The defects that in the prior art, one aiming frame is only matched with one intramedullary nail, when a plurality of intramedullary nails are required to be implanted in a surgery, a plurality of aiming frames are required to be matched and prepared, the surgery preparation time is long, and the surgery operation is complicated; the aiming frame has a complex structure, is not convenient to hold by hands and has insufficient precision.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the multifunctional in-vitro intramedullary nail aiming frame which has a simple structure, can adjust the position of an intramedullary nail, has high aiming precision, can be used for various intramedullary nails with different screw hole positions and avoids the complicated operation of replacing the various intramedullary nails.

In order to achieve the purpose, the invention adopts the following technical scheme:

a multifunctional in vitro intramedullary nail aiming frame comprises an aiming device, and is characterized by further comprising a handheld part, an adjusting part and a sleeve which are sequentially connected; an intramedullary nail connector is sleeved on the sleeve, and internal threads are arranged in the intramedullary nail connector; one end of the sighting device is connected with the adjusting part, and the other end of the sighting device extends to the upper part of the sleeve and is provided with a sighting port; the adjusting part is provided with an adjusting knob and an adjusting worm, the adjusting worm penetrates through the adjusting part and the sleeve and is rotationally connected with the adjusting part and/or the sleeve, one end of the adjusting worm is connected with the adjusting knob, the other end of the adjusting worm is provided with an external thread, and one end of the external thread extends out of the sleeve and is connected with the intramedullary nail connector through the internal thread.

Furthermore, the cross-sectional shape of the adjusting part is an H-shaped cylindrical structure, the adjusting knob is arranged on a transverse axis, equally-divided grooves are formed in the adjusting knob, the grooves facilitate the pinching of the hand part during contact and rotation, and meanwhile the adjusting part is matched as a reference coordinate after the screw hole is fixed.

Furthermore, the intramedullary nail connector is of an external hexagon shape and is matched with an internal hexagon shape inside the intramedullary nail in size.

Furthermore, the intramedullary nail connector is provided with a baffle plate, and when the intramedullary nail connector is inserted into the intramedullary nail, the insertion depth is limited.

Furthermore, the handheld portion is a hollow cylinder with two through ends, the adjusting portion is communicated with the handheld portion, the handheld portion is arranged to be a hollow cylinder structure, the whole weight of the aiming arm can be reduced, good hand feeling of the aiming arm can be kept, when the intramedullary nail is implanted to meet resistance, the knocking tool can be in contact with the adjusting knob through the handheld portion, and the hammer is used for knocking to enable the intramedullary nail to smoothly enter the bone fixing position.

When the intramedullary nail connector is used, an operator holds the hand-held part, keeps the direction of the screw hole of the intramedullary nail vertical to be parallel to the aiming port, inserts the intramedullary nail connector into the intramedullary nail, and determines the position of the screw hole through the hexagonal structure; if the screw hole is positioned right below the aiming hole, the intramedullary nail is directly implanted; if the intramedullary nail is not positioned under the aiming port, the adjusting worm is driven to rotate by rotating the adjusting knob, the intramedullary nail connector rotates along the radial direction and moves axially under the transmission of the external thread, so that the integral intramedullary nail is driven to be finely adjusted in the axial direction, and after the positions of the screw hole and the aiming device are determined, the intramedullary nail is taken down and the direction of the screw hole is adjusted, and then the intramedullary nail connector is inserted into the intramedullary nail connector, so that the screw hole is positioned under the aiming port; if the implanted intramedullary nail meets resistance, a knocking tool can be used for penetrating through the handheld part and the connecting part to apply external force at the positions of the adjusting knob and the like for pushing; after the screw is pushed to the determined position, the aiming opening is matched with a screw tightening tool to screw the screw into the screw hole.

Compared with the prior art, the intramedullary nail has the advantages that the intramedullary nail is subjected to fine adjustment in the axial direction by utilizing the transmission connection relation of the internal thread and the external thread, the adjustment precision is high, the external hexagonal structure of the intramedullary nail connector is convenient for the angle adjustment of the intramedullary nail in the radial direction, and the intramedullary nail can be used for aiming and mounting of intramedullary nails with various specifications; the handheld part is communicated with the inside of the adjusting part, so that the overall weight of the aiming arm is reduced, and the aiming arm has good holding hand feeling; when encountering resistance problem during implantation, the implant can be pushed by means of a knocking tool.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of the structure of the regulating part of the present invention.

Fig. 3 is a schematic view of the adjusting worm of the present invention.

In the figure: 1-sighting device 2-handheld part 3-adjusting part 4-intramedullary nail connector 5-sighting port 6-adjusting knob 7-adjusting worm 8-external thread 9-axis 10-groove 11-intramedullary nail 12-baffle 13-screw.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, a multifunctional in vitro intramedullary nail aiming frame comprises an aiming device 1, and is characterized by further comprising a handheld part 2, an adjusting part 3 and a sleeve which are connected in sequence; an intramedullary nail connector 4 is sleeved on the sleeve, and internal threads are arranged in the intramedullary nail connector 4; one end of the sighting device 1 is connected with the adjusting part 3, and the other end of the sighting device extends to the upper part of the sleeve and is provided with a sighting port 5; the adjusting part 3 is provided with an adjusting knob 6 and an adjusting worm 7, the adjusting worm 7 penetrates through the adjusting part 3 and the sleeve and is rotationally connected with the adjusting part 3 and/or the sleeve, one end of the adjusting worm 7 is connected with the adjusting knob 6, the other end of the adjusting worm is provided with an external thread 8, and one end of the external thread 8 extends out of the sleeve and is connected with the intramedullary nail connector 4 through the internal thread.

As shown in fig. 2, the cross section of the adjusting part 3 is in an H-shaped cylindrical structure, the adjusting knob 6 is arranged on a transverse axis 9, the adjusting knob 6 is provided with equally-divided grooves 10, the grooves 10 facilitate the pinching during the contact rotation of the hand, and meanwhile, the adjusting part 3 is matched as a reference coordinate after the position of the screw hole is fixed.

As shown in fig. 2, the intramedullary nail connector 4 has an external hexagonal shape and is dimensioned to fit an internal hexagonal shape inside the intramedullary nail 11.

As shown in fig. 2, a baffle plate 12 is provided on the intramedullary nail connector 4 for limiting the insertion depth when the intramedullary nail connector 4 is inserted into the intramedullary nail 11.

Handheld portion 2 is the hollow cylinder that both ends link up, and regulating part 3 and handheld portion 2 intercommunication, handheld portion 2 set up to hollow tubular construction and can alleviate aiming arm overall weight, keep its good feeling, and when intramedullary nail 11 was implanted and met the resistance, can pass through handheld portion 2 and adjust knob 6 contact with the instrument of strikeing, use the hammer to strike and make intramedullary nail 11 get into skeleton fixed position smoothly.

When the intramedullary nail connector is used, an operator holds the hand-held part 2, keeps the direction of a screw hole of the intramedullary nail 11 vertical and parallel to the aiming port 5, inserts the intramedullary nail connector 4 into the intramedullary nail 11, and determines the position of the screw hole through a hexagonal structure; if the screw hole is positioned under the aiming hole 5, the intramedullary nail is directly implanted; if the intramedullary nail is not positioned under the aiming port 5, the adjusting worm 7 is driven to rotate by rotating the adjusting knob 6, the intramedullary nail connector 4 rotates along the radial direction and moves axially of the sleeve under the transmission of the external thread 8, so that the fine adjustment of the whole intramedullary nail in the axial direction is driven, and after the positions of the screw hole and the aiming device 1 are determined, the intramedullary nail 11 is taken down and the direction of the screw hole is adjusted, and then the intramedullary nail connector 4 is inserted, so that the screw hole is positioned under the aiming port 5; if the implanted intramedullary nail meets resistance, a knocking tool can be used for applying external force to positions such as the adjusting knob 6 and the like through the handheld part 2 and the connecting part for pushing; after being pushed to the determined position, the aiming hole 5 is matched with a screw tightening tool to screw the screw 13 into the screw hole.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.