CN108742769A - A kind of shovel head guide pin - Google Patents

Abstract

The present invention proposes a shovel guide pin, which comprises a drill bit at the front end, a blade body in the middle and a hook at the tail, and the drill bit, the blade body and the needle hook are connected in sequence; the end of the drill bit is The shape of the sharp shovel head; the standard scale is marked on the ruler; the needle hook is designed with a thread groove and a thread hook for thread hooking. The invention can simultaneously realize multiple functions such as drilling, depth measurement, and line crossing.

Description

A shovel guide needle

technical field

The invention belongs to the technical field of medical instruments, in particular to a shovel-head guide needle.

Background technique

When performing cruciate ligament reconstruction surgery, it is necessary to drill the bone tissue and measure the depth of its position to evaluate the operation. Due to the small diameter of the drill hole and considering the complexity of the human body structure, there is currently no suitable measurement tool , It is often difficult to determine the depth of the bone tissue hole, and there is no quantitative data to support it, which brings a lot of inconvenience to the operation.

In addition, it is necessary to fix the thread through the hole in the bone tissue during the operation. The threading device used in the past is mostly used for passing the thread through the soft tissue, and it is difficult to pass through the fine hole on the bone tissue. Therefore, there is also a lack of threading device on the bone tissue.

Therefore, there is an urgent need for a bone tissue surgical instrument. Through a reasonable structural design, it can simultaneously realize the functions of drilling, measuring, and thread hooking, so as to help doctors accurately measure the depth of bone tissue during surgery, and efficiently complete threading fixation. , to ensure the best surgical results.

Contents of the invention

The present invention proposes a shovel guide pin, comprising a drill bit at the front end, a blade body in the middle and a hook at the tail, the drill bit, the blade body and the needle hook are connected in sequence; the end of the drill bit is The shape of the sharp shovel head; the standard scale is marked on the ruler; the needle hook is designed with a thread groove and a thread hook for thread hooking.

In the shovel head guide pin proposed by the present invention, the drill bit includes an assembly seat, a drill body and a shovel head; the end of the assembly seat is connected to the blade body, and the front end of the assembly seat is connected to the drill body. The main body of the drill bit is a cuboid, and the flanges on both sides of the main body of the drill bit protrude outward relative to the assembly seat, and the front end of the main body of the drill bit is connected to the shovel head; the shape of the shovel head includes the tip of the shovel head and On its side, the tip of the shovel head is a rectangle whose side length is less than the thickness of the drill bit body, and the side of the shovel head is a curved surface that is evenly transitioned between the tip and the wide side of the drill body and between the tip and the long side .

In the shovel head guide pin proposed by the present invention, the assembly base, the drill bit body and the shovel head are integrated.

In the shovel head guide pin proposed by the present invention, the ruler body is made of flexible material.

In the shovel head guide needle proposed by the present invention, the needle hook includes a needle hook body, the front end of the needle hook body is connected to the ruler body, from the middle of the needle hook body until the needle hook body deviates from the Between the ends of the needle hooks, there is an inwardly hollowed-out thread slot, and at the end of the needle hooks, a protruding column is arranged in the thread slot, and a thread hook parallel to the needle hook is provided on the top of the protruding post. .

In the shovel head guide needle proposed by the present invention, the wire hook is arranged along the slotting direction of the wire groove, and a wire hook opening is left between the wire hook and the wire groove.

In the shovel head guide pin proposed by the present invention, both sides of the protruding post are curved surfaces that are inwardly recessed and fitted to pass through the line.

Compared with the prior art, the present invention has the beneficial effect that the tip of the drill bit can play a centering role and prevent the shovel head from shifting during the drilling process. The shovel head structure has high drilling efficiency and reliable working performance, which improves the operation efficiency and safety. The scale is marked on the body of the ruler, which can measure the depth of bone tissue immediately after the drilling is completed. The needle hook at the end of the guide needle is provided with a wire hook and a wire groove, which can realize the threading function of fine holes.

Description of drawings

Fig. 1 is a structural diagram and a partially enlarged diagram of a shovel head guide pin of the present invention.

Figure 2 is a structural diagram of the drill bit.

Figure 3 is a structural diagram of the ruler body.

Figure 4 is a structural diagram of the needle hook.

Fig. 5 is a schematic diagram of the operation of Step 2 in the embodiment.

Fig. 6 is a schematic diagram of the operation of Step 3 in the embodiment.

Fig. 7 is a schematic diagram of the operation of Step 5 in the embodiment.

In the figure, 1-drill, 11-assembly seat, 12-drill body, 13-flange, 14-tip, 2-foot body, 3-needle hook, 31-needle hook body, 32-slot, 33-convex Column, 34-wire hook, 35-hook line mouth.

Detailed ways

The shovel head guide pin of the present invention will be described in more detail below in conjunction with schematic diagrams, wherein a preferred embodiment of the present invention is shown, and it should be understood that those skilled in the art can modify the present invention described herein and still achieve the advantageous effects of the present invention . Therefore, the following description should be understood as the broad knowledge of those skilled in the art, but not as a limitation of the present invention.

As shown in Figure 1, the shovel head guide pin of the present invention includes a drill bit 1 at the front end, a blade body 2 in the middle and a needle hook 3 at the tail, and the drill bit 1, the blade body 2 and the needle hook 3 are connected in sequence; The end portion of the drill bit 1 is in the shape of a sharp shovel head; referring to Fig. 3, the standard scale is marked on the said ruler body 2; the said ruler body 2 is made of flexible material, directly marked on the ruler body 2 of the guide pin The scale of the bone tissue can be directly measured after the drilling is completed, without the need for other measuring instruments. The needle hook 3 is designed with a thread groove 32 and a thread hook 34 for thread hooking. Preferably, the assembly seat, the drill body 12 and the shovel head are integrated.

Referring to Fig. 2, the drill bit 1 includes an assembly seat, a drill body 12 and a shovel head; the end of the assembly seat is connected to the blade body 2, and the front end of the assembly seat is connected to the drill body 12, and the drill body 12 is a cuboid, the flanges 13 on both sides of the drill body 12 protrude outward relative to the assembly seat, and the front end of the drill body 12 is connected to the shovel head; the shape of the shovel head includes a tip 14 of the shovel head And its side, the tip 14 of described shovel head is the rectangle that side length is less than described drill bit main body 12 thicknesses, and the side of described shovel head is between tip 14 to described drill bit main body 12 wide sides and tip 14 to long side evenly transitioned surfaces. The end of the drill bit 1 is sharp, which can play a role in positioning the center when drilling, so as to ensure that the guide pin will not deviate, and the cutting efficiency of the shovel head structure is high and the working performance is stable. The flanges 13 on both sides of the shovel head can be stuck on the edge of the bone tissue hole for positioning after drilling.

Referring to Fig. 4, the hook 3 includes a hook body 31, the front end of the hook body 31 is connected to the blade body 2, from the middle of the hook body 31 until the hook body 31 is away from the needle Between the end of hook 3, be provided with inwardly hollowed-out thread groove 32, be provided with a boss 33 from described thread groove 32 at the end of described needle hook 3, the top of described boss 33 is provided with described needle. Hook 3 is parallel to wire hook 34 . The wire hook 34 is arranged along the slotting direction of the wire groove 32, and there is a wire hook opening 35 between the wire hook 34 and the wire groove 32. When the wire needs to be passed, the tail end can be directly used to hook the wire and Threading is done through a hole in the bone tissue. Preferably, both sides of the protruding post 33 are curved surfaces that are inwardly recessed and conform to the crossing line.

Example

Step 1: Fix the shovel head of the drill 1 guide pin outwards to the motor handle.

Step 2: As shown in FIG. 5 , use the tip 14 of the drill bit 1 to position the drilling point, and then turn on the motor to start drilling on the bone tissue.

Step 3: As shown in FIG. 6 , after the drilling is completed, pull the guide wire backward until the flanges 13 at both ends of the drill body 12 catch the bone tissue for positioning.

Step 4: Read the scale on the ruler body 2, and the scale value is the bone tissue depth.

Step 5: As shown in Figure 7, when threading is required, insert the thread hook 34 at the tail end of the shovel guide needle into the bone tissue hole, hook the thread that needs to pass through the hole, recover the shovel guide needle and pass the thread through the bone tissue hole.

The foregoing are only preferred embodiments of the present invention, and do not limit the present invention in any way. Any person skilled in the technical field, within the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the technical solution of the present invention. The content still belongs to the protection scope of the present invention.

Claims (7)

1. a shovel head guide pin, is characterized in that, comprises the needle hook that is positioned at the drill bit of front end, the ruler body of middle part and afterbody, and described drill bit, described ruler body and described needle hook are connected successively; The end of described drill bit The part is in the shape of a sharp shovel head; the ruler is marked with a standard scale; the needle hook is designed with a thread groove and a thread hook for hooking threads. 2. The shovel guide pin according to claim 1, wherein the drill bit comprises an assembly seat, a drill body and a shovel head; the end of the assembly seat is connected to the ruler body, and the front end of the assembly seat Connect the drill body, the drill body is a cuboid, the flanges on both sides of the drill body protrude outward relative to the assembly seat, and the front end of the drill body is connected to the shovel head; the shape of the shovel head Including the tip of the shovel head and its side, the tip of the shovel head is a rectangle whose side length is less than the thickness of the drill bit body, the side of the shovel head is from the tip to the wide side of the drill body and from the tip to the long side evenly transitioned surfaces. 3. The shovel bit guide pin according to claim 2, characterized in that, the assembly seat, the drill bit body and the shovel bit are integrated. 4. The shovel head guide pin according to claim 1, wherein the ruler body is made of flexible material. 5. The shovel head guide pin according to claim 1, wherein the needle hook comprises a needle hook body, and the front end of the needle hook body is connected to the ruler body, from the middle of the needle hook body until at the An inwardly hollowed wire groove is provided between the ends of the needle hook body away from the needle hook, and a protruding post is arranged in the wire groove at the end of the needle hook, and the top of the protruding post is provided with the Needle hook parallel to wire hook. 6 . The shovel head guide needle according to claim 5 , wherein the wire hook is arranged along the slotting direction of the wire groove, and there is a wire hook opening between the wire hook and the wire groove. 7 . 7 . The shovel head guide pin according to claim 1 , characterized in that, both sides of the convex post are curved surfaces that are inwardly recessed and fitted to pass through the line. 8 .