阅读说明：本技术 一种髓内钉定位固定装置 (Intramedullary nail positioning and fixing device ) 是由 雷金来 庄岩 张堃 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种髓内钉定位固定装置,它包括保持架、髓内钉、定位装置和调整结构,所述的保持架为拱形结构,且一端连接髓内钉,另一端设有调整结构,所述的保持架的一端设有圆孔,所述的圆孔连通髓内钉,所述的髓内钉内设有磁极；所述的调整结构包括安装板和约束件,所述的安装板上设有用于安装约束件的圆孔,所述的安装板的一侧设有安装耳片,所述的安装耳片之间设有调整旋钮,所述的调整旋钮底部的螺杆上设有调整螺母,所述的螺杆转动连接约束件,所述的约束件内设有定位装置,所述的髓内钉的一端设有与定位装置相配合的螺孔。本发明与现有技术相比的优点在于：本发明提供的装置中,通过仅有的几张X光片即可实现髓内钉固定。(The invention relates to an intramedullary nail positioning and fixing device, which comprises a retainer, an intramedullary nail, a positioning device and an adjusting structure, wherein the retainer is of an arch structure, one end of the retainer is connected with the intramedullary nail, the other end of the retainer is provided with the adjusting structure, one end of the retainer is provided with a round hole, the round hole is communicated with the intramedullary nail, and a magnetic pole is arranged in the intramedullary nail; the adjusting structure comprises a mounting plate and a restraint piece, wherein a round hole for mounting the restraint piece is formed in the mounting plate, a mounting lug is arranged on one side of the mounting plate, an adjusting knob is arranged between the mounting lugs, an adjusting nut is arranged on a screw rod at the bottom of the adjusting knob, the screw rod is rotatably connected with the restraint piece, a positioning device is arranged in the restraint piece, and a screw hole matched with the positioning device is formed in one end of an intramedullary nail. Compared with the prior art, the invention has the advantages that: in the device provided by the invention, the intramedullary nail can be fixed by only a few X-rays.)

1. An intramedullary nail positioning and fixing device is characterized in that: the intramedullary nail comprises a retainer (1), an intramedullary nail (2), a positioning device (3) and an adjusting structure (4), wherein the retainer (1) is of an arch structure, one end of the retainer is connected with the intramedullary nail (2), the other end of the retainer is provided with the adjusting structure (4), one end of the retainer (1) is provided with a round hole which is communicated with the intramedullary nail (2), and a magnetic pole (5) is arranged in the intramedullary nail (2);

adjusting structure (4) including mounting panel (6) and restraint piece (7), mounting panel (6) on be equipped with round hole (8) that are used for installing restraint piece (7), restraint piece (7) be the tubular structure, one side of mounting panel (6) be equipped with installation auricle (9), installation auricle (9) between be equipped with adjusting knob (10), screw rod (11) of adjusting knob (10) bottom on be equipped with adjusting nut (12), screw rod (11) rotate and connect restraint piece (7), restraint piece (7) in be equipped with positioner (3), the one end of intramedullary nail (2) be equipped with positioner (3) matched with screw (13), the one end of positioner (3) pass restraint piece (7) and install in screw (13).

2. The intramedullary nail positioning and fixation device of claim 1, wherein: the positioning device (3) comprises an installation block (14) and a connecting rod (15), a detection circuit is arranged in the installation block (14), an indicator lamp (16) is arranged above the installation block, and a photoelectric detector (17) and a magnetic needle (18) which are matched with the magnetic pole (5) are arranged in the connecting rod (15).

3. The intramedullary nail positioning and fixation device of claim 2, wherein: a sleeve (19) is arranged on the outer side of the connecting rod (15).

4. The intramedullary nail positioning and fixation device of claim 1, wherein: the adjusting nut (12) is fixed between the mounting lugs (9).

5. The intramedullary nail positioning and fixation device of claim 1, wherein: the mounting plate (6) is fixedly arranged at one end of the retainer (1).

6. The intramedullary nail positioning and fixation device of claim 1, wherein: the screw hole (13) and the round hole are on the same horizontal line.

Technical Field

The invention relates to the field of intramedullary nail positioning and fixing, in particular to an intramedullary nail positioning and fixing device.

Background

When doing orthopedic surgery, need fix the broken bone, can follow suitable position and use the intramedullary nail to fix the broken bone position, accomplish through the outside steel nail that pierces to the fixing of intramedullary nail, among the traditional operation, because can't directly see steel nail and intramedullary nail position, beat the partially easily when punching, and for successfully once fixing need shoot how many hundreds of X-ray films, the operation process is longer, and is great to medical personnel and patient radiation damage. There is a need to develop a device for quickly performing a surgical procedure, using only a few X-ray films to confirm the position of the device.

Disclosure of Invention

The invention aims to solve the technical problems and provides an intramedullary nail positioning and fixing device.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: an intramedullary nail positioning and fixing device comprises a retainer, an intramedullary nail, a positioning device and an adjusting structure, wherein the retainer is of an arch structure, one end of the retainer is connected with the intramedullary nail, the other end of the retainer is provided with the adjusting structure, one end of the retainer is provided with a round hole, the round hole is communicated with the intramedullary nail, and a magnetic pole is arranged in the intramedullary nail;

the adjusting structure include mounting panel and restraint piece, the mounting panel on be equipped with the round hole that is used for installing the restraint piece, the restraint piece be tubular structure, one side of mounting panel be equipped with the installation auricle, the installation auricle between be equipped with adjusting knob, the screw rod of adjusting knob bottom on be equipped with adjusting nut, the screw rod rotate and connect the restraint piece, the restraint piece in be equipped with positioner, the one end of intramedullary nail be equipped with positioner matched with screw, positioner's one end pass the restraint piece and install in the screw hole.

Furthermore, the positioning device comprises an installation block and a connecting rod, a detection circuit is arranged in the installation block, an indicator lamp is arranged above the installation block, and a photoelectric detector and a magnetic needle which are matched with the magnetic poles are arranged in the connecting rod.

Furthermore, a sleeve is arranged on the outer side of the connecting rod.

Furthermore, the adjusting nut is fixed between the mounting lugs.

Furthermore, the mounting plate is fixedly arranged at one end of the retainer.

Furthermore, the screw hole and the round hole are on the same horizontal line.

Compared with the prior art, the invention has the advantages that: in the device provided by the invention, the intramedullary nail can be fixed by only a few X-rays.

Drawings

Fig. 1 is a schematic structural view of an intramedullary nail positioning and fixing device of the present invention.

Fig. 2 is an exploded view of an intramedullary nail positioning and fixation device of the present invention.

Fig. 3 is a structural diagram of an intramedullary nail positioning and fixing device in a use state.

Fig. 4 is a schematic structural view of an adjusting structure of the intramedullary nail positioning and fixing device of the present invention.

Fig. 5 is a side view of the adjusting structure of the intramedullary nail positioning and fixing device of the present invention.

Fig. 6 is a schematic structural view of a positioning device of the intramedullary nail positioning and fixing device of the present invention.

Fig. 7 is a schematic circuit diagram of a positioning device of an intramedullary nail positioning and fixing device of the present invention.

As shown in the figure: 1. the device comprises a retainer, 2, an intramedullary nail, 3, a positioning device, 4, an adjusting structure, 5, a magnetic pole, 6, a mounting plate, 7, a restraint piece, 8, a round hole, 9, a mounting lug, 10, an adjusting knob, 11, a screw rod, 12, an adjusting nut, 13, a screw hole, 14, a mounting block, 15, a connecting rod, 16, an indicator light, 17, a photoelectric detector, 18, a magnetic needle, 19 and a sleeve.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An intramedullary nail positioning and fixing device comprises a retainer 1, an intramedullary nail 2, a positioning device 3 and an adjusting structure 4, wherein the retainer 1 is of an arch structure, one end of the retainer is connected with the intramedullary nail 2, the other end of the retainer is provided with the adjusting structure 4, one end of the retainer 1 is provided with a round hole which is communicated with the intramedullary nail 2, and a magnetic pole 5 is arranged in the intramedullary nail 2;

adjusting structure 4 include mounting panel 6 and restraint piece 7, adjusting nut 12 fix between installation auricle 9, mounting panel 6 on be equipped with the round hole 8 that is used for installing restraint piece 7, restraint piece 7 be the tubular structure, one side of mounting panel 6 be equipped with installation auricle 9, installation auricle 9 between be equipped with adjust knob 10, the screw rod 11 of adjust knob 10 bottom on be equipped with adjusting nut 12, screw rod 11 rotate and connect restraint piece 7, restraint piece 7 in be equipped with positioner 3, the one end of intramedullary nail 2 be equipped with positioner 3 matched with screw 13, positioner 3 one end pass restraint piece 7 and install in screw 13.

The positioning device 3 comprises a mounting block 14 and a connecting rod 15, a detection circuit is arranged in the mounting block 14, an indicator light 16 is arranged above the mounting block, and a photoelectric detector 17 and a magnetic needle 18 which are matched with the magnetic pole 5 are arranged in the connecting rod 15.

The outer side of the connecting rod 15 is provided with a sleeve 19.

The mounting plate 6 is fixedly arranged at one end of the retainer 1.

The screw hole 13 and the round hole are on the same horizontal line.

The working principle of the invention is as follows:

1) firstly, opening a hole at a proper position to extend the intramedullary nail into a leg bone, and then installing a retainer;

2) extending the magnetic pole from the back part of the intramedullary nail into the innermost part of the intramedullary nail;

3) according to the position indicated by the retainer, punching holes on the side surfaces of thighs to pierce skin and muscles to approach leg bones;

4) the mounting sleeve extends into the hole drilled before;

5) extending the positioning unit into the sleeve;

6) adjusting the adjusting mechanism according to the feedback signal provided by the positioning unit to enable the feedback signal to meet the requirement, and then locking the adjusting mechanism;

7) drawing out the positioning unit;

8) drawing out the magnetic pole;

9) the steel nail is extended into the bone from the sleeve and locked with the intramedullary nail by external means.

The positioning unit is a set of electronics device, utilizes the attraction effect of magnet to the magnetic needle to judge the position of positioning unit front end relative magnetic pole, utilizes electronics system to detect magnetic needle deflection angle, and then feeds back to the outside, instructs through the pilot lamp, by artifical according to instruction result adjusting device, makes the positioning unit front end just to the screw of intramedullary nail (the magnetic pole just is located this screw center), and then locks the sleeve angle, forms the guide channel that the steel nail got into required position.

The adjustment structure is as follows:

and adjusting the adjusting knob to enable the adjusting screw rod to move up and down along the adjusting nut, so that the traction restraint piece is overturned, the restrained sleeve pipe swings up and down along with the adjustment nut, and the position adjustment is realized.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.