TWM596049U - Scraper - Google Patents

Abstract

The present invention relates to a scraper, which mainly includes a body part, a grip part, and a scraping part; the grip part is connected to one end of the body part, and the scraping part is connected to the body part away from the grip part The other end; wherein, the scraping portion is bent at a specific angle with respect to the body portion, the end surface of the scraping portion away from the body portion includes a scraping blade, and the scraping blade is from the corresponding two side ends of the scraping portion Taper towards height. According to this, the new type of scraping part can easily extend into the intervertebral foramen to move and change direction, and can easily remove the traditional intervertebral foramen such as the posterior edge of the vertebral body, the anterior side of the dural sac, or the vertebral body under the nerve root or Osteophytes or calcified intervertebral disc tissue that cannot be reached by general osteotomies.

Description

Scraper

The present invention relates to a scraper, especially an instrument suitable for spine surgery.

There is a pair of facet joints between every two adjacent vertebrae, and the facet joints also form part of the intervertebral foramen, and the nerve roots of the neck and waist pass through the front of the facet joints. Therefore, when degenerative hyperplasia of the intervertebral disc or articular process joints and bone spurs appear, it is easy to compress the nerve roots, making the patient painful.

Currently, minimally invasive surgery using intervertebral foramen to remove bone spurs or protruding discs is common, but because the intervertebral foramen are quite narrow and the holes in the holes are not straight, they are not straight-through channels. Easy things. In addition, if the tissue or bone spur to be removed is located at a specific location, such as the osteophyte at the posterior edge of the vertebral body or the calcified intervertebral disc tissue near the anterior midline of the spinal canal, it is generally not reachable by bone chisels or grinding drills. Can sigh with hope. This is because whether the grinding drill or osteotome is integrated inside the intervertebral foramen, and the intervertebral foramina is a rigid structure, when the grinding drill or the bone chisel is inserted into the hole mirror, the working head end has little activity, although some The design bends the tip of the grinding drill or chisel slightly, but the degree of bending is still limited, and it is still impossible to effectively remove bone spurs.

On the other hand, most of the current osteotomies are designed according to the requirements of cutting out the lamina and articular processes located at the posterolateral side of the dural sac, and the head ends of the osteotomies are mostly square blades. However, if the bone spur to be removed is located on the anterior side of the dura sac and under the nerve root For the square vertebral body, due to the limited operation space, the use of conventional bone chiseling may risk damage to the spinal cord, nerve roots, and dural sac. In addition, the conventional osteotome is straight, and it is difficult to change the direction in a narrow space, so the tip of the conventional osteotome often cannot reach the expected depth and angle, resulting in the fact that the bone spur cannot be removed reliably.

The main purpose of the present invention is to provide a scraper that can move in the intervertebral foramen and change the direction, and can easily remove the osteophytes or calcified intervertebral disc tissues of the vertebrae, especially the general intervertebral foramen or general Where bone chisels cannot reach, such as the posterior edge of the vertebral body, the anterior side of the dural sac, or the vertebral body below the nerve root.

To achieve the above object, the present invention provides a scraper, which mainly includes: a body portion, a grip portion, and a scraping portion; the grip portion is connected to one end of the body portion, and the scraping portion is connected The other end of the body portion away from the grip portion; wherein the scraping portion is bent at a specific angle with respect to the body portion, the end surface of the scraping portion away from the body portion includes a scraping blade; the scraping blade is from the scraping portion Correspondingly, the two side ends taper toward the height.

According to this, the present invention bends the scraping portion at a specific angle with respect to the body portion, and the scraping portion is provided with a scraping blade on the end surface away from the body portion, so the scraping portion can easily extend into the intervertebral foramen Internal movement and change direction, and can easily remove the posterior edge of the vertebral body, the anterior side of the dural sac, or the vertebral body under the nerve root and other traditional intervertebral foramen or general osteotome can not reach osteophytes or calcified intervertebral disc tissue.

Preferably, the scraping part of the present invention can be bent at a 90-degree angle or any other predetermined angle with respect to the body part, so it can conform to the specific position of the osteophyte or calcified tissue to be removed, and can touch and Remove it easily.

Furthermore, the scraping blade of the present invention can be tapered from the corresponding two side ends of the scraping portion with an arc surface toward the height direction, and the radius of curvature of the arc surface can be between 1mm Between 3mm, and the height of the scraping blade can account for half of the height of the scraping part. Moreover, the surface of the scraping portion that is remotely opposed to the scraping blade is a flat surface, so the new scraping portion can reduce the chance of touching other vertebral bone tissues and hindering the operation.

In addition, the body portion of the scraping blade of the present invention may be in the shape of a round rod, and its diameter may gradually decrease toward the scraping portion; and the diameter of the connection between the body portion and the scraping portion may be smaller than that of the body portion and the gripping portion The diameter of the part is half; and the length of the scraping part can be greater than the diameter of the connection between the body and the grip; the length of the scraping part can be between the diameter of the connection between the body and the grip Between 1 and 2 times.

2‧‧‧Body

3‧‧‧ Grip

4‧‧‧Scraping Department

31‧‧‧Curved slot

41‧‧‧Scraping blade

D1‧‧‧The diameter of the connection between the body and the scraper

D2‧‧‧The diameter of the connection between the body and the grip

H‧‧‧Height of scraping blade

L‧‧‧Length of scraping part

T‧‧‧Height of scraping part

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an enlarged perspective view of a scraping portion of a preferred embodiment of the present invention.

FIG. 3 is a top view of a preferred embodiment of the present invention.

4 is a cross-sectional view of a scraping portion of a preferred embodiment of the present invention.

Before the new scraper is described in detail in this embodiment, it is important to note that in the following description, similar elements will be represented by the same element symbol. Furthermore, the drawings of the present invention are for illustrative purposes only, they are not necessarily drawn to scale, and not all details are necessarily presented in the drawings.

Please also refer to FIGS. 1 to 4, FIG. 1 is a perspective view of a preferred embodiment of the new scraper, FIG. 2 is an enlarged perspective view of a scraping portion of a preferred embodiment of the new scraper, and FIG. 3 is a A top view of a preferred embodiment of the new scraper. FIG. 4 is a cross-sectional view of the scraping portion of a preferred embodiment of the new scraper.

As shown in the figure, the scraper of this embodiment mainly includes a body part 2, a grip part 3, and a scraper part 4, and the grip part 3 is connected to the body part 2 One end, and the scraping portion 4 is connected to the other end of the body portion 2 away from the grip portion 3. Wherein, the body portion 2 is in the shape of a round rod, the diameter of which is tapered toward the scraping portion 4, and the diameter D1 of the connection between the body portion 2 and the scraping portion 4 is smaller than the connection between the body portion 2 and the grip portion 3 The diameter D2 is half. In this embodiment, the diameter D2 of the body portion 2 is 6.5 mm, and the diameter D1 of the connection between the body portion 2 and the scraping portion 4 is 3 mm.

Furthermore, the total length of the scraper of this embodiment is 215 mm, and a plurality of arc-shaped grooves 31 are provided at intervals on the grip portion 3, and the radius of curvature of each arc-shaped groove 31 is about 25 mm. According to this, the arrangement of the arc-shaped groove 31 in this embodiment allows the user to hold it more firmly, and it is not easy to slide or rotate.

As shown in the figure, the scraping portion 4 is bent at a specific angle with respect to the body portion 2. This embodiment adopts a 90-degree bend, but the new type should not be limited to this, the specific angle can be adapted to various needs or operations Is set to any angle depending on the position. In addition, a scraping blade 41 is integrally provided on the end surface of the scraping portion 4 away from the body portion 2, and the scraping blade 41 is tapered from the corresponding two side ends of the scraping portion 4 toward the height H direction.

To further explain, the scraping blade 41 of this embodiment is tapered from the corresponding two side ends of the scraping portion 4 toward the height H with an arc surface, and the radius of curvature R of the arc surface is 1.5 mm, and then scraped The height H of the scraping blade 41 occupies about half of the height T of the scraping portion 4, and the surface of the scraping portion 4 that is remotely opposed to the scraping blade 41 is a flat surface. However, by defining the relevant characteristics of the scraping blade 41, the scraper of this embodiment can easily scrape or chisel osteophyte or calcified intervertebral disc tissue.

In addition, the length L of the scraping portion 4 of this embodiment is larger than the diameter D2 of the connection portion of the body portion 2 with the grip portion 3, and the length L of the scraping portion 4 is interposed between the body portion 2 and the grip portion 3 Between 1 and 2 times the diameter D2 The length L of the scraping part 4 of the embodiment is 11.5 mm. According to this, the above-mentioned size definition allows the scraper of this embodiment to easily move into the intervertebral foramen and change its direction; moreover, it can also move lightly in narrow pores during the operation It is not easily blocked by the vertebrae, dura sac or nerve roots, and it can significantly reduce the risk of surgical damage to nerves due to unexpected collisions.

The above-mentioned embodiments are only examples for the convenience of description. The scope of the rights claimed by the present invention should be subject to the scope of the patent application, and not limited to the above-mentioned embodiments.

2‧‧‧Body

3‧‧‧ Grip

4‧‧‧Scraping Department

41‧‧‧Scraping blade

L‧‧‧Length of scraping part

Claims (10)

A scraper, including: A body part; A grip portion connected to one end of the body portion; and A scraping part connected to the other end of the body part away from the grip part; Wherein, the scraping portion is bent at a specific angle with respect to the body portion, and the end surface of the scraping portion away from the body portion includes a scraping blade; the scraping blade is from two corresponding sides of the scraping portion The end tapers towards the height. The scraper of claim 1, wherein the scraping portion is bent at 90 degrees with respect to the body portion. The scraper according to claim 1, wherein the scraping blade is tapered from the corresponding two side ends of the scraping portion toward the height in an arc surface. The scraper of claim 3, wherein the radius of curvature of the arc surface is between 1 mm and 3 mm. The scraper according to claim 3, wherein the height of the scraping blade occupies half of the height of the scraping portion. The scraper according to claim 1, wherein the body portion is in the shape of a round rod, and its diameter gradually decreases toward the scraper portion. The scraper of claim 6, wherein the diameter of the connection between the main body and the scraper is less than half of the diameter of the connection between the main body and the grip. The scraper of claim 6, wherein the length of the scraping portion is greater than the diameter of the connection between the body portion and the grip portion. The scraper of claim 8, wherein the length of the scraping portion is between 1 and 2 times the diameter of the connection between the body portion and the grip portion. The scraper of claim 1, wherein the surface of the scraping portion remotely opposite to the scraping blade is a flat surface.

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