KR102416512B1 - Needle structure of core biopsy device - Google Patents

Abstract

By proposing a new structure and shape of the inner and outer needles constituting the needle set of the cut biopsy device, it provides a technology that can improve the accuracy and efficiency of biopsy collection through the cut biopsy device. The needle structure of the cutting biopsy device according to the first embodiment of the present invention has a length specified in the front-rear direction, and extends in the longitudinal direction from the head and the head having a tip tip formed so as to penetrate at least through the living tissue, Sokchim comprising a body portion in which the tissue collection groove for accommodating the living tissue is concavely formed; And a needle tube containing the inner needle is formed, and by the relative movement with the inner needle in the longitudinal direction by the operator's operation, the tissue collection groove is inserted into the tissue collection groove by a cutting blade formed on the same end side as the tip side. It is made to include; and the front end of the tip is divided into four quadrants, the upper right quadrant is the first quadrant, and the first quadrant When each of the remaining quadrants in a counterclockwise direction is defined as the second to fourth quadrants, the first inclined surface in the region corresponding to the first and second quadrants includes a tip point that is a point in the axial direction of the fast needle. It is formed such that the second inclined surface faces the tip point in the area corresponding to the third quadrant, and the third inclined surface faces the tip point in the area corresponding to the fourth quadrant to face one surface in the longitudinal direction, A point where the first inclined surface, the second inclined surface, and the third inclined surface meet at the same time becomes the tip point, and a pattern is formed on the first inclined surface, the second inclined surface and the third inclined surface. do.

Description

Needle structure of core biopsy device

The present invention relates to a specimen instrument of living tissue, and more particularly, after adjusting the main body to bring the specimen needle combined with the inner needle and outer needle to the living tissue, the operator manipulates the movement of the outer needle to enter the tissue collection groove of the inner needle. A new structure and shape of an inner acupuncture and an outer acupuncture in a biological tissue specimen apparatus that receives a biological tissue sample and collects living tissue by sealing the tissue collection groove of the inner needle while cutting the received sample with the original organism.

In general, for the examination of living tissue, a method of injecting an instrument capable of sampling a living tissue into a living tissue and collecting a tissue to be sampled from among the living tissue is used. These types include aspiration biopsy and amputation biopsy.

In the case of aspiration biopsy, a general type of injection needle is inserted into the tissue, and then the cells in the lesion are aspirated to collect cellular tissue. The large-needle aspiration biopsy method can extract a large amount of cells, but due to the large diameter of the needle, there are high side effects such as tissue destruction and creating a feeling of fear in the patient. On the other hand, in the case of fine needle aspiration biopsy, the needle is thin, so it is easy to insert and provides convenience to the patient.

For this purpose, recently, a cut biopsy, which can be obtained in a state in which the histological form is completely maintained by cutting the tissue in the form of a needle, and can increase the diagnostic accuracy, is being used. In the case of amputation biopsy, the diameter of the needle inserted into the affected area is minimized, repetitive invasive behavior is minimized, and precise operation on small specimens is possible, which is why it has been widely used compared to the recent aspiration biopsy.

The shape of the needle in the specimen instrument of the cut biopsy method described in Korean Patent Registration Nos. 10-1463867 and 10-1551311 is as shown in FIG. 1 . 1 is a view for explaining the needle structure of the biopsy apparatus of the cut biopsy method including the above-mentioned prior literature.

Referring to FIG. 1 , in the cut biopsy method, the needle is composed of a needle set consisting of an inner needle 10 and an outer needle 20 . The inner needle 10 is composed of a head 11 and a body 12 , and the outer needle 20 is composed of a cutting blade 21 and an inner needle tube 22 . A tissue collection groove 113 is formed in the body portion 12 of the acupuncture 10 , and the head 11 is composed of a tip tip 111 and an extension portion 112 .

As shown in FIG. 1 , the acupuncture 10 extends from the distal tip 111 to the extension 112 and the body 12 in the longitudinal direction, and a portion of the upper surface of the body 12 , specifically the distal tip. A tissue collection groove 113 is formed in one area close to the (111) direction. In the case of the outer needle 20, an inclined cutting blade 21 is formed on one end surface close to the tip 111 direction, and it is configured to allow relative movement with the inner needle 10 in the longitudinal direction through the needle tube 22. has been

In the existing cut biopsy instrument having the needle shape of this structure, the structure in which the inner needle 10 and the outer needle 20 are combined enters the body of the tissue collection area, and when the tissue collection area is reached, the inner needle 10 ) is first fired through a linear motion in the longitudinal direction, and then the outer needle 20 is fired in the firing direction of the inner needle 10, and the cutting blade 21 through the double advance method of the inner needle 10 and the outer needle 20 When this tissue is cut, the specimen is cut and collected.

In this way, the tip 111 of the inner needle 10 is in the shape of a blade, so if there are important tissues such as arteries, gallbladder, nerves, etc. behind the test tissue, or when used for small children, Even if the aiming direction and the prediction of the rear safety distance are slightly deviated, the fired needle cannot be stopped, and damage to the relevant important tissue may occur, which poses a risk.

On the other hand, since the cutting blade 21 of the outer needle 20 protrudes more outward than the outer surface of the inner needle 10, the thickness of the needle is relatively thick, making the operation difficult, and the tissue is moved backward by the cutting blade 21 When pushed or the needle set enters, there is a risk that the tissue may be damaged and cause secondary damage.

In addition, when the fastening needle 10 is fired, since the caliber of the fasting needle 10 is small and the tip 111 is inclined in only one direction, a dense film tissue or a hard calcified tissue, etc. It may not penetrate or may be bent, and due to this, the nodule may be pushed backwards or the needle may not reach the correct tissue area to be harvested, which makes the procedure very difficult.

In addition, due to the presence of the extension 112 of the acupuncture 10, it is difficult to accurately extract the desired tissue, so there is a problem in that it is difficult to perform an accurate procedure.

On the other hand, techniques for improving accuracy, such as using an ultrasonic guide device, have been developed a lot so that the needle set accurately reaches the tissue to be harvested. However, in the above-described cutting biopsy device itself, there may be dangerous tissue behind the sample to be collected, so it is very important to locate the most end point, that is, the end point of the tip tip 111 . However, as described above, due to the presence of the extension 112 and the characteristics of the shape such as the shape of the blade of the tip 111, the problem is pointed out that the procedure is carried out in a state containing a risk or the operation cannot be performed according to the risk. has been

Accordingly, the present invention has been devised to solve the problems of the existing technology described above, and first, by presenting a new shape of the tip 111 of the sok needle 10, it is to provide a technology that can prevent damage to important tissues. There is a purpose.

On the other hand, by making the thickness of the outer needle 20 thinner or by suggesting a new thickness relationship with the inner needle 10, the thickness of the needle is minimized to reduce the wound size of the affected area, and tissue damage caused by the cutting blade 21 can be minimized. Another purpose is to provide the technology that has

In addition, by minimizing the length of the extension 112 of the needle 10, it is another object to provide a technique capable of greatly improving the precision of tissue collection.

In addition, when using the ultrasonic guide, by presenting the structure of the tip 111 and the outer needle 20 that can grasp the exact position of the tip 111, it provides a technology that can significantly improve the accuracy of the procedure. has a different purpose.

In order to achieve the above object, the needle structure of the cutting biopsy device according to the first embodiment of the present invention has a predetermined length in the front-rear direction, and at least a head portion having a tip tip formed so as to penetrate while penetrating a living tissue, and the head Sokchim extending from the longitudinal direction and including a body portion in which a tissue collection groove for accommodating living tissue is concavely formed; And a needle tube containing the inner needle is formed, and by the relative movement with the inner needle in the longitudinal direction by the operator's operation, the tissue collection groove is inserted into the tissue collection groove by a cutting blade formed on the same end side as the tip side. It is made to include; and the front end of the tip is divided into four quadrants, the upper right quadrant is the first quadrant, and the first quadrant When each of the remaining quadrants in a counterclockwise direction is defined as the second to fourth quadrants, the first inclined surface in the region corresponding to the first and second quadrants includes a tip point that is a point in the axial direction of the fast needle. It is formed such that the second inclined surface faces the tip point in the area corresponding to the third quadrant, and the third inclined surface faces the tip point in the area corresponding to the fourth quadrant to face one surface in the longitudinal direction, A point where the first inclined surface, the second inclined surface, and the third inclined surface meet at the same time becomes the tip point, and a pattern is formed on the first inclined surface, the second inclined surface and the third inclined surface. do.

The needle structure of the cutting biopsy device according to another first embodiment of the present invention has a length specified in the front-rear direction, and includes at least a front tip formed to penetrate through a living tissue, and a head with an extension extending from the tip tip; Sokchim extending from the head in the longitudinal direction and including a body portion in which a tissue collection groove for accommodating living tissue is formed concavely; And a needle tube containing the inner needle is formed, and by the relative movement with the inner needle in the longitudinal direction by the operator's operation, the tissue collection groove is inserted into the tissue collection groove by a cutting blade formed on the same end side as the tip side. It is made to include, and the outer diameter of the outer chim and the maximum outer diameter of the head of the inner acupuncture are the same.

The needle structure of the cutting biopsy device according to the second embodiment of the present invention has a predetermined length in the front-rear direction, and at least a tip tip is formed to penetrate while penetrating a living tissue, and a region adjacent to the region where the tip tip is formed. Sokchim having a tissue collection groove for accommodating living tissue on its lower surface is concave; And a needle tube containing the inner needle is formed, and by the relative movement with the inner needle in the longitudinal direction by the operator's operation, the tissue collection groove is inserted into the tissue collection groove by a cutting blade formed on the same end side as the tip side. It is characterized in that it includes a; the outer chim that moves so that the living tissue is sealed and accommodated, and the region adjacent to the distal tip of the outer chim is formed in a shape having an inclination.

According to the first embodiment of the present invention, in the general inclined structure of the tip of the inner needle, the third and fourth quadrants are back-cutting, and the angle is relaxed instead of the half-moon-shaped blade centering on the tip point. As the structure of the tip tip is formed in the shape of an awl of

In addition, according to the first and second embodiments of the present invention, the outer acupuncture has a reciprocating structure in which the outer acupuncture moves backward and then advances from the inner acupuncture, so that the existing inner acupuncture penetrates the tissue while advancing, according to the method in which the inner acupuncture is advanced. It is possible to completely prevent the failure or bending of the nodule, and the failure of the needle to reach the correct tissue area to be harvested can also be completely prevented.

In addition, since the thickness of the outer needle can be made thinner and the outer diameter of the inner needle can be the same as that of the outer needle, it can be inserted into the tissue like a single needle connected without a step between the inner needle and the outer needle. That is, there is no wound enlargement due to the cutting blade of the outer needle, and the insertion of a soft needle set is possible, thereby minimizing the patient's pain and wounding of the affected area.

On the other hand, according to the second embodiment of the present invention, the length of the head of the tissue collection groove can be minimized by the new structure in which the tissue collection groove is formed at the lower part of the inner needle, so the unnecessarily wide gap between the tissue collection groove and the tip tip. By reducing , there is an effect that can greatly improve the precision of tissue collection.

On the other hand, according to the first embodiment of the present invention, when using the ultrasonic guide, the first inclined surface, the second inclined surface, and the third inclined surface because the intaglio pattern that can increase the ultrasonic echo is formed to face the tip point, the ultrasonic wave By enabling the guide to determine the exact position of the tip tip, it is possible to determine the position with higher accuracy than the existing ultrasonic guide, thereby improving the accuracy of the procedure.

1 is a side cross-sectional view of the needle structure of a conventional cutting biopsy device.
2 is a side view of the needle structure of the cutting biopsy device according to the first embodiment of the present invention;
3 is a plan view, a side view, and a bottom view for explaining a modified example of the needle structure of the cut biopsy device according to the first embodiment of the present invention.
Figure 4 is a perspective view for explaining the structure of a needle in the cutting biopsy device according to the first embodiment of the present invention.
5 and 6 are front views for explaining the structure of the tip of the cutting biopsy device according to the first embodiment of the present invention.
7 is a side cross-sectional view of the needle structure of the cut biopsy device according to the second embodiment of the present invention.
8 and 9 are side cross-sectional views of the needle structure of the amputation biopsy device according to a modified example of the second embodiment of the present invention.

Hereinafter, various embodiments and/or aspects are disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of one or more aspects. However, it will also be recognized by one of ordinary skill in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain illustrative aspects of one or more aspects. These aspects are illustrative, however, and some of various methods may be employed in the principles of the various aspects, and the descriptions set forth are intended to include all such aspects and their equivalents.

Further, various aspects and features will be presented by a system that may include a number of devices, components and/or modules, and the like. It is also noted that various systems may include additional apparatuses, components, and/or modules, etc. and/or may not include all of the apparatuses, components, modules, etc. discussed with respect to the drawings. must be understood and recognized.

As used herein, “embodiment”, “example”, “aspect”, “exemplary”, etc. may not be construed as an advantage or advantage in any aspect or design being described over other aspects or designs. . Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements, and/or groups thereof. should be understood as not

Also, terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those of ordinary skill in the art to which the present invention belongs. have the same meaning as Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

Meanwhile, in the following description, terms used in the first and second embodiments of the present invention may overlap, but unless otherwise specified, names of components used in the first and second embodiments, etc. Even if these are the same, it will be preferable that each configuration is referred to as a different configuration independently used in each embodiment.

In addition, although the first and second embodiments of the present invention have been described independently of each other, it will be understood that the embodiments may be implemented independently or each embodiment may be implemented in combination with each other.

[First embodiment]

2 is a side view of the needle structure of the cut biopsy device according to the first embodiment of the present invention.

Referring to FIG. 2 , in the needle structure of the cutting biopsy device according to the first embodiment of the present invention, the needle set includes an inner needle 100 and an outer needle 200 . The acupuncture needle has a specified length in the front-rear direction, at least through the extension part 112 of the head part 110 from the head part 110 and the head part 110 having the tip tip 111 to penetrate while penetrating the living tissue. It extends in the longitudinal direction and means a configuration including the body portion 120 in which the tissue collection groove 121 for accommodating the living tissue is concavely formed.

The front-back direction refers to the direction in which the needle set penetrates into the body, and refers to the same direction as the longitudinal direction described below. The tip 111 refers to an area in which a sharp needle is formed in the biopsy cutting device. The extension 112 is an area of the head 110 connected to the body 120 , and for example, refers to an area in the head 110 excluding the area in which the tip 111 is formed. As shown in FIG. 2 , the extension part 112 may form an inclined outer surface of which the thickness is changed for connection with the body part 120 .

The tissue collection groove 121 refers to an area in which living tissue is cut by the cutting blade 210 of the outer needle 200 according to a relative motion with the inner needle 100 of the outer needle 200 to be described later and accommodated therein. The tissue collection groove 121 may have any shape as long as it has a concave-shaped cavity for accommodating living tissue.

The body part 120 has, for example, a tissue collection groove 121 formed as described above, and thereafter, while forming a constant bar shape of a needle, to be included in the needle tube 220 of the outer needle 200, It means a configuration that enables relative movement with the outer chim 200 .

At this time, in order to minimize the thickness of the outer cover 200 , the thickness of the area of the head 110 , excluding the area in which the tip 111 , that is, the first to third inclined surfaces to be described later, is formed, that is, the body portion. The maximum outer diameter of 120 is formed to be smaller than the maximum outer diameter of the head (110).

At this time, the thickness of the outer needle 200, that is, the length from the center of the outer needle 200 to the outermost surface of the outer needle 200, that is, the radius of the outer needle 200 is, from the center of the head part 110 to the first inclined surface, the The length to the outermost surface of the region excluding the region where the second inclined surface and the third inclined surface are formed, that is, the region corresponding to the extension part 112 may be the same. That is, the outer diameter of the outer needle 200 may be formed to be the same as the maximum outer diameter of the head 111 of the inner needle 100 .

That is, in another first embodiment of the present invention described above, the maximum outer diameter of the head 111 of the sokchim 100 coincides with the outer diameter (maximum outer diameter) of the outer acupuncture 200, so that the sokchim 100 and the outer acupuncture as a whole 200 may be configured like a single needle. That is, it is a key configuration of the other first embodiment of the present invention to be configured so that there is no step difference between the sokchim 100 and the outchim 200 on the outer surface.

That is, as described above, in the past, living tissue was cut and accommodated in such a way that the inner needle advances first and then the outer needle advances. In this case, when the inner needle is configured to be thin, as described above, the penetrating force of the inner needle is lowered or the inner needle is bent while advancing due to the thin thickness of the inner needle. Accordingly, the outer needle had no choice but to have a thick structure to protrude from the outer surface of the inner needle.

However, according to the first embodiment of the present invention and the second embodiment to be described later, the characteristics of the relative motion described above, after the Sokchim 100 and the Outchim 200 enter together, the Sokchim 100 is fixed and the Sokchim 100 is fixed. Only 200 has a characteristic of moving backward and forward, and for this reason, only the fastening needle 100 does not need to perform a forward motion, so the limitation on the thickness of the fastening needle 100 disappears.

Accordingly, the thickness of the inner needle 100 can be designed to be thinner, and accordingly, the thickness of the outer needle 200 can be configured to be the same as the inner needle 100 as described above. In addition, as described above, since the problem of bending of the fastening needle 100 or the difficulty of penetrating the tissue is solved, the phenomenon that the nodule is pushed backward or the fasting needle 100 does not reach the correct tissue area to be harvested can also be completely prevented.

In addition, according to the reciprocating structure of the outer needle 200 described above, the diameter of the inner needle 100 can be further reduced, and the thickness of the outer needle 200 can be made thinner. Specifically, as described above, the maximum outer diameter of the head 111 of the inner needle 100 coincides with the outer diameter (the maximum outer diameter) of the outer needle 200, so that the inner needle 100 and the outer needle 200 as a whole are like a single needle. can be configured. That is, as it is configured so that there is no step difference between the inner needle 100 and the outer needle 200 on the outer surface, the thickness of the needle can be minimized, so that the operation can be performed easily and accurately, and by enabling soft insertion, the patient It is effective in minimizing the pain and enlargement of the affected area.

Of course, in the first embodiment of the present invention, the characteristics of the relative movement of the outer needle 200 with the inner needle 100, that is, the backward and forward movement characteristics of the outer needle 200, depend on the degree of processing and the thickness of the needle set. From 16G or less, it can be used in the conventional two-step forward method described above, so it should be understood that the characteristics of the relative motion of the outer needle 200 and the inner needle 100 can be applied differently depending on the thickness of the needle.

The tip 111 refers to an area having a sharp needle shape in the configuration of the inner needle 100 . The characteristic configuration of the tip tip in the present invention will be described with reference to FIGS. 1, 4, 5 and 6 . 4 is a perspective view for explaining the structure of the sok needle of the cut biopsy device according to the first embodiment of the present invention, and FIGS. 5 and 6 describe the structure of the tip tip of the cut biopsy device according to the first embodiment of the present invention. This is a front view for

First, referring to FIGS. 5 and 6, in the first embodiment of the present invention, the front end of the tip is divided into four quadrants (A, B, C, D), but the upper right quadrant is formed. Let the first quadrant (A) be, and each remaining quadrant in a counterclockwise direction with respect to the first quadrant (A) may be divided into a second quadrant (B), a third quadrant (C), and a fourth quadrant (D).

At this time, in the region corresponding to the first and second quadrants A and B, the first inclined surface 1310 is one in the direction of the axis (no identification number, for example, the central axis of the needle), as in the conventional needle structure. It is formed to face one surface (P) in the longitudinal direction including the tip point (T).

On the other hand, in a partial area of the area corresponding to the third quadrant C, the second inclined surface 1321 faces the tip point T, and in a partial area of the area corresponding to the fourth quadrant D, the third inclined surface ( It can be seen that 1322 is formed to face the tip point (T).

5 and 6 through this structure, it can be seen that the first inclined surface 1310, the second inclined surface 1321, and the third inclined surface 1322 are formed such that the point where they meet at the same time becomes the tip point T. have. That is, through the first inclined surface 1310, the second inclined surface 13221 and the third inclined surface 1322, the configuration of the tip tip is not a configuration in which a general cut surface of a needle is formed, but a tip point (T) like an awl. It is formed to have a pointed structure at the center.

At this time, as can be seen by comparing FIGS. 5 and 6 , one surface P including the tip point T and the tip point T is formed to be in contact with the outer surface of the circle as shown in FIG. 5 with respect to the y-axis or , can be located inside the circle depending on the degree of processing. That is, according to the degree of backcutting of the second inclined surface 1321 and the third inclined surface 1322 , the tip point T may be located within an upper and lower allowable range in the y-axis direction, and thus the tip point T The included surface P can also be moved up and down, and the allowable range is up to 1/2 of the radius.

According to this configuration, in the general inclined structure of the tip of the inner needle, the third and fourth quadrants (C, D) are back-cutting to form a sharp awl shape around the tip point (T). As the structure of the forming tip is formed, there is an effect of minimizing damage to important tissues according to the general inclined needle structure when the needle enters.

Additionally, according to the above structure, when the needle enters, the load applied to the needle downward by the hard tissue, etc. can be offset by the load applied to the upper part through the second and third inclined surfaces 1321 and 1322, There is an effect that can minimize the phenomenon such as bending when the needle enters.

Meanwhile, additionally, referring to FIGS. 5 and 6 , the first inclined surface 1310 has a longitudinal surface P including a tip point T, which is one point in the axial direction of the sokchim, parallel to the axis of the fasting needle. And, it is a surface to be orthogonal to the direction toward the uppermost point (U) of the inner needle, and it is inclined with one surface (P), so that it can be confirmed that it is formed to meet the one surface (P) at the tip tip.

Meanwhile, as shown in FIGS. 5 and 6 , the second and third inclined surfaces 1321 and 1322 may be formed to be symmetrical about the tip point T.

Based on this, referring to FIGS. 4 (a) and 4 (b), as described above, in the front tip region of the head 130, the first inclined surface 1310, the second inclined surface 1321, and the third inclined surface 1322 ) is formed. In this case, engraved patterns 150 and 151 may be formed on the first inclined surface 1310 , the second inclined surface 1321 , and the third inclined surface 1322 . The intaglio-shaped patterns 150 and 151 may be formed in various patterns such as, for example, random scratches, dimples, and line-shaped intaglio patterns.

In the present invention, the intaglio pattern 150, 151 strengthens the position of the distal tip in the ultrasound guide by amplifying the echo phenomenon of ultrasound to generate a strong signal when the position of the distal tip is determined using the ultrasound guide. It is configured to display.

Conventionally, the tip of the tip has a knife-like structure like the cutting blade of a needle, so even if an engraved pattern is formed as in the present invention, when the echo is amplified by this, amplification occurs in the form of a line rather than a point. Therefore, there was a problem that it was not possible to accurately determine the position of the point where the tip is located. Accordingly, there may be dangerous tissues behind the sample to be collected, and although it is important to locate the end point, there was a problem that the procedure was carried out with risks or could not be performed.

However, according to the present invention as described above, the first inclined surface 1310, the second inclined surface 1321, and the third inclined surface 1322 are formed so that the needle structure is formed to meet at the tip point, and the first inclined surface ( 1310), the second inclined surface 1321, and the third inclined surface 1322 are formed with the engraved patterns 150 and 151 as described above, so that the echo is amplified around the tip point. According to this, since the amplification occurs centered on the point, the location of the tip point can be accurately grasped. Accordingly, the location of the most end point is more precise than the location of the tip using the existing ultrasonic guide. Therefore, it is effective to minimize the risk of the procedure due to the possibility of the presence of dangerous tissue behind the specimen.

3 is a plan view, a side view, and a bottom view for explaining a modified example of the needle structure of the cut biopsy device according to the first embodiment of the present invention. In the following description, descriptions of parts overlapping with those of FIGS. 2 and 4 to 6 will be omitted.

Referring to FIG. 3 , in the modified example of the first embodiment of the present invention, other configurations are the same, but it can be seen that there is a slight difference in the configuration of the extension part 132 . That is, in the case of the extension 112 of FIG. 2 , the thickness of the extension part 112 of FIG. 3 is gradually reduced while being connected to the body part 120 from the tip 111 , but the extension part 132 of FIG. 3 is the tip tip It can be seen that the region connected to 131 has a constant thickness, and is formed in a form in which the thickness decreases as it slopes in the region adjacent to the body 140 . The configuration of FIGS. 2 and 3 described above may be selectively implemented.

Referring to the configuration of (a), (b) and (c) of FIG. 3 , the first inclined surface 1310 is formed on the tip 131 , and the head part 130 including the extension part 132 . It can be seen that is configured. The body portion 140 is formed with a tissue collection groove 141 as described above, and the body portion 140 thereafter is accommodated in the needle tube of the outer needle 200 . The outer needle 200 includes a cutting blade 210 as shown, and the living tissue is cut according to the backward and forward movement of the outer needle 200 and is sealed and accommodated in the tissue collection groove 141 .

On the other hand, the configuration of the auxiliary inclined surface 1320 including the second and third inclined surfaces 1321 and 1322 is the rear back back with respect to the first inclined surface 1310 as shown in (b) and (c) of FIG. It can be seen that it is formed in a cut shape.

At this time, as shown in FIG. 3 , the length in the longitudinal direction of the first inclined surface 1310 may be greater than the length in the longitudinal direction of the second and third inclined surfaces 1321 and 1322 .

[Second embodiment]

7 is a side cross-sectional view of the needle structure of the biopsy device according to the second embodiment of the present invention.

Referring to FIG. 7 , the needle structure of the cut biopsy device according to the second embodiment of the present invention is also characterized in that it is composed of an inner needle 300 and an outer needle 400 .

At this time, unlike the first embodiment, the acupuncture 300 includes a tip 310 and a body 320 that are formed to penetrate while penetrating a living tissue, and in this case, the tip 310 and the body 320 are included. It is characterized in that the tissue collection groove 330 for accommodating the living tissue is formed on the lower surface of the region adjacent to the region where the distal tip 310 is formed.

In general, the tissue collection groove 330 is formed on the upper surface of the sokchim 300, which is forced by the characteristic (two-stage advancement) of the relative motion of the conventional outer acupuncture and the inner acupuncture. With this structure, the tissue collection groove 330 must start at least in the area where the tip tip 310 ends. That is, as shown in the drawing for the first embodiment of the present invention, there must be at least an extension.

However, in the second embodiment of the present invention, as described above, after the outer acupuncture 400 enters together with the inner acupuncture 300, the outer acupuncture 400 retracts and advances by the operator's operation. , as described above, the tissue collection groove 330 may be located on the lower surface of the region adjacent to the region where the tip 310 is formed. This is because the biological tissue can be seated on the surface of the tissue collection groove 330 by the tissue pressure of the living body, even if the tissue collection groove 330 is located on the lower surface due to its characteristics, and thus the relative backward and forward movement of the outer sheath 400 described above. This is because, according to the characteristics of exercise, there is no difficulty in collecting tissue. In particular, as will be described later in the description of FIG. 7 , in the second embodiment of the present invention, a negative pressure structure is formed to strongly adsorb the living tissue to the tissue collection groove 330 , so the tissue collection groove 330 is fastened. Even if it is located on the lower surface of the 300, the collection of the tissue can be made efficiently.

As shown in Figure 7, according to the second embodiment of the present invention, when the tissue collection groove 330 is located on the lower surface of the acupuncture 300, the configuration of the extension part is similar to that of the first embodiment and the conventional biopsy device. It is not necessary, and in particular, as shown in FIG. 7 , the tissue collection groove 330 may be formed in the area of the tip 310 as well, so that the gap between the tip 310 and the tissue collection groove 330 can be minimized. . In this way, when using an ultrasonic guide or the like, the tissue collection groove 330 can be precisely positioned at the location of the biological tissue to be collected, thereby greatly improving the precision of tissue collection and, as described above, the rear of the specimen. It has the effect of minimizing the risk of operation and the impossibility of the operation according to the risk tissue that can be located in the

The outer chim 400 performs a function similar to that of the first embodiment of the present invention. That is, while the fastening needle 300 is included in the needle tube 420, it moves in the opposite direction to the tip 310 of the fasting needle 300 in the longitudinal direction by a relative movement, specifically, by the operator's operation, and then again By moving in the direction of the tip 310 of the 300), the movement is made so that the living tissue is sealed and accommodated in the tissue collection groove 330.

At this time, as the tissue collection groove 300 is formed on the lower surface of the inner needle 300, the region 410 where the cutting blade of the outer needle 400 is formed has the same inclination as the tip 310 of the inner needle 300. can be formed. That is, the area 410 in which the cutting blade of the outer needle 400 is formed is formed so that the inclined surface formed by the tip 310 of the inner needle 300 extends as shown in FIG. 7 . The outer chim 400 may be formed with a slope having the same slope as the slope θ. That is, the slopes are formed in the same direction.

8 and 9 are side cross-sectional views of the needle structure of the amputation biopsy device according to a modified example of the second embodiment of the present invention.

Referring first to FIG. 8 , the configuration of FIG. 7 and the basic structure are the same. That is, the acupuncture 300 is composed of a distal tip 310 and a body portion 320 that are formed to penetrate while penetrating a living tissue, and in this case, an area including the distal tip 310 and the body portion 320, specifically the distal end. A tissue taking groove 330 for accommodating living tissue is formed on the lower surface of the region adjacent to the region where the tip 310 is formed, and the outer needle 400 includes the inner needle 300 in the needle tube 420 , while the operator's manipulation by moving in the opposite direction to the tip 310 of the inner needle 300 in the longitudinal direction and then moving again in the direction of the tip 310 of the inner needle 300, the living tissue is sealed and accommodated in the tissue collection groove 330 It is designed to be exercised as much as possible.

In addition, the region 410 in which the cutting blade of the outer needle 400 is formed may be formed to have the same inclination as the tip 310 of the inner needle 300 . That is, the region 410 in which the cutting blade of the outer needle 400 is formed may be formed so that the inclined surface formed by the tip 310 of the inner needle 300 extends as shown in FIG. 7 .

On the other hand, in the modified example of the second embodiment shown in FIG. 8 , a negative pressure unit 340 may be formed in the sok needle 300 . The negative pressure unit 340 is formed in an area on one side of the area adjacent to the area where the tissue collection groove 330 is formed, in the direction opposite to the direction toward the tip 310, the tissue collection groove 330 and the hole 350 ), as it is concave so that air can pass through, it functions to lower the air pressure of the tissue collection groove 330 by the following configuration.

That is, when the outer needle 400 moves, the negative pressure unit 340 is formed to have a very low air pressure, using various methods such as a vacuum induction method that occurs simultaneously by the operation of the mechanism or a configuration including a separate vacuum induction device. , thereby lowering the air pressure of the tissue collection groove 330, thereby generating a force to face the tissue collection groove 330 from the outside. In this case, the living tissue can be more strongly adsorbed to the tissue collection groove 300, thereby greatly increasing the collection efficiency.

Meanwhile, referring to FIG. 9 , FIGS. 7 and 8 and other configurations include the same configuration. That is, the inner needle 300 is composed of a tip tip 310 and a body portion 320 that are formed to penetrate while penetrating a living tissue, and in this case, an area including the tip tip 310 and the body portion 320, specifically A tissue taking groove 330 for accommodating living tissue is formed on the lower surface of the region adjacent to the region where the tip 310 is formed, and the outer needle 400 includes the inner needle 300 in the needle tube 420, while the operator After moving in the opposite direction to the tip 310 of the inner needle 300 in the longitudinal direction by the operation of It is formed to move so as to be sealed and accommodated.

In addition, the region 410 in which the cutting blade of the outer needle 400 is formed may be formed to have the same inclination as the tip 310 of the inner needle 300 . That is, the region 410 in which the cutting blade of the outer needle 400 is formed may be formed so that the inclined surface formed by the tip 310 of the inner needle 300 extends as shown in FIG. 7 .

On the other hand, in the modified example of the second embodiment shown in FIG. 9 , a negative pressure unit 341 having a different shape from that of FIG. 8 may be formed in the sok needle 300 . The negative pressure part 341 is formed in an area on one side of the area adjacent to the area where the tissue collection groove 330 is formed, in the direction opposite to the direction toward the tip 310, as shown in FIG. 9, the tissue collection groove As it is formed to be connected to the 330 and the groove in the form of a groove, it performs a function of lowering the air pressure of the tissue collection groove 330 by the following configuration.

That is, when the outer needle 400 moves, the negative pressure parts 340 and 341 have very low air pressure, using various methods such as a vacuum induction method that occurs simultaneously by the operation of the mechanism or a configuration including a separate vacuum induction device. It is formed, thereby lowering the air pressure of the tissue collection groove 330, thereby generating a force to face the tissue collection groove 330 from the outside. In this case, the living tissue can be more strongly adsorbed to the tissue collection groove 300, thereby greatly increasing the collection efficiency.

As described above, although the embodiments have been described with reference to the limited embodiments and drawings, various modifications and variations are possible from the above description by those skilled in the art. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result. Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

10, 100, 300: quick needle 21, 210: cutting blade
20, 200, 400: outer cover 340, 341: negative pressure part
11, 110, 130: head
12, 120, 140, 320: body part
111, 131, 310: tip tip
112, 132: extension
113, 121, 141, 330: tissue collection groove
22, 220, 420: needle tube

Claims (10)

An acupuncture comprising a head having a specified length in the front-rear direction, at least having a tip tip formed to penetrate through the living tissue, and a body part extending in the longitudinal direction from the head and having a tissue collection groove concave for accommodating the living tissue ; and
A needle tube including the inner needle is formed, and by the relative movement with the inner needle in the longitudinal direction by the operator's operation, the tissue collection groove is inserted into the tissue collection groove by a cutting blade formed on the same end side as the tip side. It consists of including; the outer cover that moves so that the living tissue is sealed and accommodated;
The tip tip is
The front end face of the tip is divided into four quadrants, but the upper right quadrant is the first quadrant, and the remaining quadrants are the second to fourth quadrants in the counterclockwise direction with respect to the first quadrant. In an area corresponding to the first and second quadrants, a second inclined surface is provided in an area corresponding to the third quadrant so that the first inclined surface faces one surface in the longitudinal direction including a tip point that is a point in the axial direction of the sokchim. A third inclined surface is formed to face the tip point in an area corresponding to the fourth quadrant so as to face the tip point, and the point where the first inclined surface, the second inclined surface, and the third inclined surface meet at the same time is the tip point. is formed to be
The needle structure of a cut biopsy device, characterized in that a pattern is formed on the first inclined surface, the second inclined surface, and the third inclined surface.
According to claim 1,
The first inclined surface is
One surface in the longitudinal direction including the tip point, which is one point in the axial direction of the inner needle, is parallel to the axis of the inner needle and is perpendicular to the direction toward the uppermost point of the inner needle, and is inclined with the one surface. The needle structure of the cutting biopsy device, characterized in that formed so as to meet the one surface at the distal tip.
According to claim 1,
The second inclined surface and the third inclined surface,
The needle structure of the cutting biopsy device, characterized in that it is formed to be symmetrical about the tip point.
According to claim 1,
The length of the first inclined surface in the longitudinal direction is greater than the length of the second inclined surface and the third inclined surface in the longitudinal direction.
It has a predetermined length in the front-back direction, and at least a front tip formed to penetrate while penetrating the living tissue, a head having an extension extending from the tip, and a tissue collecting groove extending in the longitudinal direction from the head and accommodating living tissue. Sokchim including a concave body portion; and
A needle tube including the inner needle is formed, and by the relative movement with the inner needle in the longitudinal direction by the operator's operation, the tissue collection groove is inserted into the tissue collection groove by a cutting blade formed on the same end side as the tip side. It consists of including; the outer cover that moves so that the living tissue is sealed and accommodated;
The needle structure of the cut biopsy device, characterized in that the outer diameter of the outer needle and the maximum outer diameter of the head of the inner needle are the same.
6. The method of claim 5,
The maximum outer diameter of the body portion is formed to be smaller than the maximum outer diameter of the head portion,
The maximum forward position of the cutting blade of the outer needle is behind the tip of the inner needle with respect to the direction toward the tip of the inner needle rather than the portion where at least the tip of the head of the inner needle is formed.
Sokchim having a predetermined length in the front-back direction, at least a tip tip is formed so as to penetrate while penetrating the biological tissue, a tissue collection groove for accommodating the biological tissue is formed concavely on the lower surface of the region adjacent to the region where the tip tip is formed; and
A needle tube including the inner needle is formed, and by the relative movement with the inner needle in the longitudinal direction by the operator's operation, the tissue collection groove is inserted into the tissue collection groove by a cutting blade formed on the same end side as the tip side. It consists of including; the outer cover that moves so that the living tissue is sealed and accommodated;
The needle structure of the cut biopsy device, characterized in that the region adjacent to the distal tip of the outer needle is formed in a inclined shape. 8. The method of claim 7,
The whisper is,
Among the regions adjacent to the region in which the tissue collection groove is formed, it is formed in an area on one side in the direction opposite to the direction toward the tip tip, and is concavely formed to allow air to pass through the tissue collection groove and hole. The needle structure of the cut biopsy device, characterized in that it further comprises a negative pressure unit for lowering the air pressure of the tissue collection groove.
8. The method of claim 7,
The whisper is,
Among the regions adjacent to the region in which the tissue harvesting groove is formed, it is formed in an area on one side in a direction opposite to the direction toward the tip tip, and is formed so as to be connected to the tissue harvesting groove in a groove form, so that the tissue harvesting groove is Needle structure of the cut biopsy device, characterized in that it further comprises a negative pressure unit for lowering the air pressure.
8. The method of claim 7,
The needle structure of a cut biopsy device, characterized in that at least an intaglio pattern is formed on an inclined surface formed by the tip of the outer needle and the inner needle, and an area adjacent to the tip of the outer surface of the outer needle.

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