阅读说明：本技术 微创可吸收螺钉导向装置 (Minimally invasive absorbable screw guide device ) 是由 王庚午 潘兵辉 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种微创可吸收螺钉导向装置,包括双孔导向器、导针导向器和导针测深器；所述双孔导向器包括第一导向管和第二导向管,第一导向管和第二导向管的尾端均与手柄连接,手柄远离导向管的一侧向内形成定位卡槽；所述导针导向器包括导针套管,导针套管的尾端与定位块连接,导针套管与第二导向管为内孔间隙配合,定位块嵌入定位卡槽内；所述导针测深器包括基体,基体的头端与定位块远离导针套管的一侧贴合,在所述基体的中轴线上形成导针槽,基体的后部沿导针槽延伸方向设有刻度标尺。采用本发明导向装置可以实现微创手术中骨折块的定向钻孔及固定,降低了手术的操作难度,加快了手术速度,提高了稳定性,从而保证了手术的质量。(The invention discloses a minimally invasive absorbable screw guide device which comprises a double-hole guide device, a guide pin guide device and a guide pin depth finder, wherein the double-hole guide device is provided with a guide pin hole; the double-hole guider comprises a first guide pipe and a second guide pipe, the tail ends of the first guide pipe and the second guide pipe are connected with a handle, and a positioning clamping groove is formed inwards on one side of the handle, which is far away from the guide pipes; the guide pin guider comprises a guide pin sleeve, the tail end of the guide pin sleeve is connected with the positioning block, the guide pin sleeve and the second guide pipe are in clearance fit with each other through an inner hole, and the positioning block is embedded into the positioning clamping groove; the guide pin depth finder comprises a base body, wherein the head end of the base body is attached to one side, away from the guide pin sleeve, of the positioning block, a guide pin groove is formed in the central axis of the base body, and a graduated scale is arranged at the rear part of the base body along the extending direction of the guide pin groove. The guide device can realize directional drilling and fixing of the fracture block in the minimally invasive surgery, reduce the operation difficulty of the surgery, accelerate the surgery speed, and improve the stability, thereby ensuring the surgery quality.)

1. A minimally invasive absorbable screw guide device is characterized in that: comprises a double-hole guider (1), a guide pin guider (2) and a guide pin depth finder (3); the double-hole guider (1) comprises a first guide pipe (101) and a second guide pipe (102), the tail ends of the first guide pipe (101) and the second guide pipe (102) are connected with a handle (103), and a positioning clamping groove (104) is formed inwards on one side of the handle (103) far away from the guide pipes; the guide pin guider (2) comprises a guide pin sleeve (201), the tail end of the guide pin sleeve (201) is connected with a positioning block (202), the guide pin sleeve (201) is in clearance fit with the second guide pipe (102) through an inner hole, and the positioning block (202) is embedded into a positioning clamping groove (104); the guide pin depth finder (3) comprises a base body (306), the head end of the base body (306) is attached to one side, away from the guide pin sleeve (201), of the positioning block (202), a guide pin groove (301) is formed in the middle axis of the base body (306), and a graduated scale (305) is arranged at the rear part of the base body (306) along the extending direction of the guide pin groove (301).

2. The minimally invasive absorbable screw guide of claim 1, wherein: the first guide pipe (101) and the second guide pipe (102) are arranged in parallel up and down.

3. The minimally invasive absorbable screw guide of claim 1, wherein: the inner diameter of the first guide pipe (101) is smaller than that of the second guide pipe (102).

4. The minimally invasive absorbable screw guide of claim 1, wherein: the head end of the first guide pipe (101) is in an inclined plane shape, and the head end of the second guide pipe (102) is in a sawtooth shape.

5. The minimally invasive absorbable screw guide of claim 1, wherein: the outer diameter of the head end of the guide needle sleeve (201) is gradually reduced.

6. The minimally invasive absorbable screw guide of claim 1, wherein: the middle part of the upper surface of the positioning block (202) is downwards sunken to form an abdicating groove (203).

7. The minimally invasive absorbable screw guide of claim 1, wherein: the tail end of the base body (306) is provided with a tail end guide pin limiting part (302), and the front part of the base body (306) is provided with a front part guide pin limiting part (303); and through holes for the guide pins to pass through are formed in the tail guide pin limiting part (302) and the front guide pin limiting part (303).

8. The minimally invasive absorbable screw guide of claim 7, wherein: an observation groove (304) is formed on the base body (306) between the front guide pin limiting part (303) and the head end of the base body (306) in a downward concave mode.

Technical Field

The invention relates to the field of orthopedic medical instruments, in particular to a minimally invasive absorbable screw guide device.

Background

In the orthopedic implant surgery, after the bone is positioned to the corresponding position, a hole is drilled through a drilling device to form a channel. In order to improve the accuracy of the drill hole and the stability during drilling, a sleeve is selected for guiding the drill hole portion of the drilling device. The prior art of the drilling guide device for orthopedics has the following problems during fracture surgery: when drilling is carried out on the bone of a patient through the guiding device, the fracture block is easy to shift, the drilling direction is easy to shift, secondary drilling is needed, the operation time is prolonged, the operation requirement of high efficiency and quickness of the operation cannot be met, the operation difficulty degree is improved, and the whole treatment effect is influenced.

Disclosure of Invention

The invention aims to solve the technical problems and provides a minimally invasive absorbable screw guide device.

The invention adopts the following technical scheme.

A minimally invasive absorbable screw guide device comprises a double-hole guide device, a guide pin guide device and a guide pin depth finder; the double-hole guider comprises a first guide pipe and a second guide pipe, the tail ends of the first guide pipe and the second guide pipe are connected with a handle, and a positioning clamping groove is formed inwards on one side of the handle, which is far away from the guide pipes; the guide pin guider comprises a guide pin sleeve, the tail end of the guide pin sleeve is connected with the positioning block, the guide pin sleeve and the second guide pipe are in clearance fit with each other through an inner hole, and the positioning block is embedded into the positioning clamping groove; the guide pin depth finder comprises a base body, wherein the head end of the base body is attached to one side, away from the guide pin sleeve, of the positioning block, a guide pin groove is formed in the central axis of the base body, and a graduated scale is arranged at the rear part of the base body along the extending direction of the guide pin groove.

Furthermore, the first guide pipe and the second guide pipe are arranged in parallel up and down.

Further, the inner diameter of the first guide pipe is smaller than that of the second guide pipe.

Furthermore, the head end of the first guide pipe is in an inclined plane shape, and the head end of the second guide pipe is in a sawtooth shape.

Further, the outer diameter of the head end of the guide needle sleeve is gradually reduced.

Furthermore, the middle part of the upper surface of the positioning block is downwards sunken to form a yielding groove.

Furthermore, the tail end of the base body is provided with a tail end guide pin limiting part, and the front part of the base body is provided with a front part guide pin limiting part; and through holes for the guide pins to pass through are formed in the tail guide pin limiting part and the front guide pin limiting part. Furthermore, an observation groove is formed on the base body between the front guide pin limiting part and the head end of the base body in a downward concave mode.

The present invention obtains the following advantageous effects.

The guide device can realize directional drilling and fixing of the fracture block in the minimally invasive surgery, on one hand, the operation difficulty of the surgery is reduced, the surgery speed is accelerated, and on the other hand, the stability is improved, so that the surgery quality is ensured. In addition, the guiding device is suitable for minimally invasive surgery, has the characteristics of small incision and quick recovery, and shortens the postoperative recovery period of patients. The guide device has the advantages of simple structure and manufacturing process, lower production cost, easy cleaning and disinfection, excellent clinical use effect and wide application prospect.

Drawings

FIG. 1 is a schematic view of the construction of the double hole pilot of the present invention;

FIG. 2 is a cross-sectional view of the double hole guide of the present invention;

FIG. 3 is a schematic structural diagram of a guide pin guide of the present invention;

FIG. 4 is a cross-sectional view of a lead guide of the present invention;

FIG. 5 is a schematic structural diagram of a guide pin depth finder according to the present invention;

FIG. 6 is a top view of the lead depth finder of the present invention;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

fig. 8 is a schematic structural view of the present invention.

Wherein, 1, a double-hole guider; 101. a first guide tube; 102. a second guide tube; 103. a handle; 104. positioning the clamping groove; 2. a guide pin guider; 201. a guide pin sleeve; 202. positioning blocks; 203. a yielding groove; 3. a guide pin depth finder; 301. a guide pin groove; 302. a tail end guide pin limiting part; 303. a front guide pin limiting part; 304. an observation tank; 305. a graduated scale; 306. a substrate; 4. a kirschner wire.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1-8, a minimally invasive absorbable screw guide device comprises a double-hole guide 1, a guide pin guide 2 and a guide pin depth finder 3.

The double-hole guider 1 comprises a first guide pipe 101 and a second guide pipe 102, the first guide pipe 101 and the second guide pipe 102 are arranged in parallel up and down, and the first guide pipe 101 is positioned above the second guide pipe 102; the head end of first stand pipe 101 is the inclined plane form, and the head end of second stand pipe 102 is the cockscomb structure, and this application diplopore bushing structure has guaranteed stability and the convenience of operating under the arthroscope side by side. The inner diameter of the first guide tube 101 is smaller than that of the second guide tube 102, the first guide tube 101 is used for driving the first kirschner wire 4 to reset and temporarily fix the fracture part, and the second guide tube 102 is used for inserting the guide pin guider 2.

The tail end of first stand pipe 101 and second stand pipe 102 of this application all is connected with handle 103, and handle 103 keeps away from one side of stand pipe inwards and forms positioning groove 104, and positioning groove 104 can closely laminate with the terminal surface of guide pin director 2, prevents that rotation, swing or eccentric phenomenon from appearing in the art in guide pin director 2.

The guide pin guider 2 comprises a guide pin sleeve 201, the outer diameter of the head end of the guide pin sleeve 201 is gradually reduced, and the guide pin can more conveniently penetrate soft tissues to reach the surface of periosteum; the tail end of the guide pin sleeve 201 is connected with the positioning block 202, the middle part of the upper surface of the positioning block 202 is downwards sunken to form an abdicating groove 203, and part of the pin body of the first kirschner pin 4 is positioned in the abdicating groove 203. The guide pin sleeve 201 and the second guide tube 102 are in clearance fit with each other, the positioning block 202 is embedded into the positioning clamping groove 104, the positioning clamping groove 104 can be attached seamlessly, the measuring depth of the positioning pin can be conveniently measured, and the accuracy of measured data is guaranteed. The present application utilizes a guide pin bushing 201 that penetrates the second guide tube 102 to drive in the second kirschner wire 4 for guidance of the driven screw.

After the second Kirschner wire 4 is driven to a proper position, the depth measurement is carried out by using the guide pin depth finder 3, and the length of the absorbable screw to be implanted is determined. The guide pin depth finder 3 comprises a base 306, the head end of the base 306 is attached to one side of the positioning block 202 far away from the guide pin sleeve 201, a guide pin groove 301 is formed on the central axis of the base 306, and a graduated scale 305 is arranged at the rear part of the base 306 along the extending direction of the guide pin groove 301, so that the depth measurement reading is facilitated.

Specifically, the tail end of the base 306 is provided with a tail end guide pin limiting part 302, and the front part of the base 306 is provided with a front guide pin limiting part 303; through holes for the guide pins to pass through are formed in the tail guide pin limiting part 302 and the front guide pin limiting part 303. A viewing slot 304 is formed on the base 306 between the front guide pin limiting part 303 and the head end of the base 306 by sinking downwards. The observation groove 304 is U-shaped, which is convenient for observing the using state of the guide pin.

The specific application method of the invention is as follows:

firstly, the double-hole guider 1 enters a fracture affected part along a channel, a first Kirschner wire 4 is driven in through a first guide pipe 101, and an instrument and the bone of the affected part are temporarily fixed;

secondly, inserting the guide pin sleeve 201 of the guide pin guider 2 into the second guide tube 102 of the double-hole guider 1 to ensure that the guide pin guider 2 is tightly attached to the double-hole guider 1;

thirdly, a second branch kirschner wire 4 is driven into the bone through the guide pin sleeve 201, and the position of the second branch kirschner wire 4 is observed under the mirror, so that the fracture line can be smoothly passed through, and the fracture part can be fixed;

and fourthly, penetrating the head end of the guide pin depth finder 3 from the tail end of the second kirschner wire 4, ensuring that the guide pin depth finder 3 and the guide pin guider 2 are tightly attached, measuring the insertion depth of the guide pin, determining the length of an absorbable screw according to the depth of the guide pin, implanting the absorbable screw along the second kirschner wire 4, and enabling the fracture part to achieve a good resetting effect.

The guiding device can be used for conveniently realizing minimally invasive operation of fracture fixation under an arthroscope, the whole device is ingenious in design, has the characteristics of small incision, convenience in use, simplicity in operation and stable structure, can shorten the operation time, improves the operation quality and achieves a good recovery and cure effect.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.