WO2021090986A1

WO2021090986A1 - Biopsy needle set

Info

Publication number: WO2021090986A1
Application number: PCT/KR2019/015166
Authority: WO
Inventors: 고형진
Original assignee: 주식회사 플라워메디칼
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2021-05-14

Abstract

An embodiment of the present invention provides a biopsy needle set comprising an inner needle part and an outer needle part. The outer needle part comprises an outer needle body and an insertion part which is connected to the outer needle body and has a shape inclined toward an area for biopsy. The inner needle part is formed to extend through the outer needle part and comprises: an inner needle body; a collection groove formed in an area of the inner needle body; a head part which is connected to the inner needle body, faces an area for biopsy, and is inclined along the same direction as the inclined shape of the cutout part; and an exposure area which is connected to the inclined area of the area of the head part and is exposed while not being covered with an end part of the cutout part of the outer needle part.

Description

Needle set for biopsy

The present invention relates to a needle set for biopsy.

In general, in order to examine a biological tissue, a method of injecting a device capable of sampling a biological tissue into the biological tissue and collecting a tissue to be sampled from among the biological tissues is used.

For example, a method in which the tissue to be collected can be cut by the shape of a needle and obtained in a state in which the histological shape is maintained intact is used.

However, when the nose is inserted in order to collect such living tissue, it may not penetrate properly or bend when penetrating the film tissue or hard calcified tissue for examination, and the tissue for the living tissue due to pain to the object to be examined during such penetration. There is a limit to improving the accuracy and stability of harvesting.

The present invention can provide a needle set for biopsy that easily penetrates the epidermis and easily collects tissue.

An embodiment of the present invention is a biopsy needle set including an inner needle and an outer needle, the outer needle comprising an insertion portion connected to the outer needle body and the outer needle body and having an inclined shape toward an area for biopsy, The inner needle portion is formed to pass through the outer needle portion, is connected to the inner needle body, a collection groove formed in one area of the inner needle body, and is connected to the inner needle body, and is inclined along the same direction as the inclined shape of the cut portion. Disclosed is a needle set for biopsy comprising a head portion and an exposed area connected to an inclined area of one area of the head portion and exposed without being covered by an end of the cut portion of the outer needle portion.

In this embodiment, the inclined area of the insertion portion includes an area forming an acute angle, the inclined area of the head portion includes an area forming an acute angle, and the size of the acute angle of the head portion is greater than the size of the acute angle of the insertion portion. It can be formed to be.

In this embodiment, a cutting area may be formed on an outer surface of an area corresponding to the insertion portion of the outer surface.

In this embodiment, the outer needle portion may be formed to move relative to the inner needle portion.

In this embodiment, the length of the outer needle may have a value smaller than the length of the inner needle.

Another embodiment of the present invention is a needle set for a biopsy comprising an inner needle and an outer needle, the inner needle portion is formed to penetrate the outer needle, the inner needle body, a collecting groove formed in one area of the inner needle body, and connected to the inner needle body And a head portion that is inclined toward the area for biopsy and is inclined along the same direction as the inclined shape of the cut portion, and the outer surface portion is connected to the outer needle body and the outer needle body and has an inclined shape toward the area for biopsy. Disclosed is a needle set for biopsy in which a cutting region is formed in at least one region of an insertion portion and an outer surface of the insertion portion.

In this embodiment, the cutting area may include a curved surface.

In this embodiment, the edge of the cutting area may include a curved line.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

The biopsy needle set according to the present invention can easily penetrate the epidermis and easily collect tissue.

1 is a side cross-sectional view schematically showing a needle set for biopsy according to an embodiment of the present invention.

FIG. 2 is a view for explaining the operation of the biopsy needle set of FIG. 1.

3 is an enlarged view of an area of FIG. 1.

4 is a plan view as viewed from the top of FIG. 3.

5 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention.

6 is a view for explaining the operation of the biopsy needle set of FIG. 5.

7 is an enlarged view of an area of FIG. 5.

8 is a plan view as viewed from the top of FIG. 7.

9 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention.

10 is a view for explaining the operation of the biopsy needle set of FIG. 9.

11 is an enlarged view of an area of FIG. 9.

12 is a plan view as viewed from the top of FIG. 11.

13 is a bottom view as seen from the bottom of FIG. 11.

Fig. 14 is a diagram showing a modified example of Fig. 12;

FIG. 15 is a side view of region A of FIG. 14 as viewed from the S direction.

16 is a cross-sectional view taken along line XV-XV in FIGS. 14 and 15.

17 is a plan view schematically showing a part of a needle set for biopsy according to another embodiment of the present invention.

FIG. 18 is a side view as viewed from the direction K of FIG. 17.

Fig. 19 is a bottom view as seen from the direction B in Fig. 18;

20 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention.

FIG. 21 is a view for explaining the operation of the biopsy needle set of FIG. 20.

22 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention.

FIG. 23 is a view for explaining the operation of the biopsy needle set of FIG. 22.

Since the present invention can apply various transformations and have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. Effects and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when describing with reference to the drawings, the same or corresponding constituent elements are assigned the same reference numerals, and redundant descriptions thereof will be omitted. .

In the following embodiments, terms such as first and second are used for the purpose of distinguishing one constituent element from other constituent elements rather than a limiting meaning.

In the following examples, expressions in the singular include plural expressions unless the context clearly indicates otherwise.

In the following embodiments, terms such as include or have means that the features or elements described in the specification are present, and do not preclude the possibility of adding one or more other features or components in advance.

In the drawings, components may be exaggerated or reduced in size for convenience of description. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, and thus the present invention is not necessarily limited to what is shown.

In the following embodiments, the x-axis, y-axis, and z-axis are not limited to three axes on a Cartesian coordinate system, and may be interpreted in a broad sense including them. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but may refer to different directions that are not orthogonal to each other.

When a certain embodiment can be implemented differently, a specific process order may be performed differently from the described order. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to the described order.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a side cross-sectional view schematically showing a needle set for biopsy according to an embodiment of the present invention, and FIG. 2 is a view for explaining the operation of the needle set for biopsy of FIG. 1.

3 is an enlarged view of an area of FIG. 1, and FIG. 4 is a plan view as viewed from the top of FIG. 3.

1 to 4, the biopsy needle set 100 according to the present embodiment may include an inner needle portion 110 and an outer needle portion 120.

The biopsy needle set 100 (hereinafter, also referred to as “needle set”) may accommodate at least one area by removing a tissue of a living body for a biopsy of a living body, for example, a human body.

For example, the biopsy needle set 100 may define an examination direction based on the biopsy direction D in the forward direction D1 or the backward direction D2. Specifically, the biopsy needle set 100 is moved in the forward direction (D1) with respect to a living body, for example, the epidermis of the human body, penetrates an area of the epidermis, is inserted into the epidermis, reaches the internal area of the living body desired for biopsy, and reaches the desired tissue. The biopsy can be easily carried out on the tissue removed by the biopsy needle set 100 by removing and moving in the backward direction (D2) to come out of the epidermis.

The outer shell 120 may include an outer shell body 122 and an insertion portion 121.

The outer shell body 122 may have a shape similar to a hollow column shape and may have an elongated shape. Through this, the inner needle portion 110 may be disposed to penetrate through the outer needle portion 120.

As an alternative embodiment, at least one area of the outer shell body 122 may have a shape such as a hollow cylinder.

The insertion part 121 may be formed to be connected to the outer needle body 122 and may be disposed to face an area for biopsy. For example, the insertion part 121 may include a region that starts to penetrate the epidermis of the human body.

The insertion portion 121 is a hollow shape, for example, may have a shape such as a pillar that extends integrally, such as the outer shell body 122, and may have a shape with an open end.

The insertion portion 121 includes an inclined region, for example, may have an inclined shape in an area including the end of the insertion portion 121, and through this, it is possible to easily penetrate the epidermis of the human body and begin to enter.

As an optional embodiment, the inclined region of the insertion unit 121 may have an angle of 30 degrees or less and may have an inclined shape, and, as a specific example, may have an angle of 20 degrees or less. Through this, pain can be reduced when piercing the human body's epidermis.

As an optional embodiment, the region at one end of the insertion unit 121 may have a tip region having an acute angle, for example, as shown in FIG. The tip region may be sharpened at an acute angle. As a specific example, a tip region may be formed under the inclined region of the insertion part 121.

Through this, it is easily inserted into the epidermis of the human body from the insertion part 121 so that the needle set for biopsy 100 can be easily moved in the direction of the desired tissue of the living body.

In addition, as an optional embodiment, a cutting area may be formed on an outer surface of the insertion part 121, that is, a surface opposite to the inner surface facing the inner surface of the insertion part 121.

Specifically, one or more cutting regions may be formed under the insertion part 121, that is, in a region of a region including the starting point of the inclined region of the insertion part 121 and starting to penetrate the epidermis of the human body.

Through the inclined shape of the insertion part 121 and the cutting area on the outer surface of the corresponding area, when the outer surface part 120 penetrates the epidermis of the human body, it is inserted more naturally and easily, so that tissue collection can be easily proceeded. .

In addition, the insertion part 121 may reduce the deformation of the tip region and reduce pain for the biopsy subject.

In addition, as an optional embodiment, the outer needle portion 120 may be formed to be able to exercise with respect to the inner needle portion 110. For example, the outer shell 120 may have an inner space as a hollow shape from the outer shell body 122 to the insertion portion 121, and the inner needle 110 may be disposed in the inner space of the outer shell 120 I can. As a specific example, the minimum width of the inside of the outer needle portion 120 may be at least greater than the maximum width of the inner needle portion 110.

The fast needle part 110 may include a fast needle body 112, a collecting groove 113 and a head part 111.

The inner needle body 112 may be disposed in the inner space of the outer needle portion 120.

The collection groove 113 may include an area formed in one area of the outer needle part 120 and in which tissue for biopsy is accommodated using the needle set 100 for biopsy.

The collecting groove 113 is a long elongated shape, for example, may have an appropriate length in the longitudinal direction of the inner needle portion (110).

The harvesting groove 113 may have a width in a direction orthogonal to the length direction. As an optional embodiment, the width of the harvesting groove 113 may have a value corresponding to the maximum width of the fast needle body 112.

As an optional embodiment, the harvesting groove 113 may have a greater depth at the center than both edges based on the width direction. For example, the harvesting groove 113 may become deeper toward the center from both edges based on the width direction, and through this, a large number of tissues may be effectively accommodated in the harvesting groove 113.

The collecting groove 113 may be disposed close to the head part 111. For example, the collecting groove 113 may include an inclined side surface along the same direction as the inclined direction of the head part 111 of the inner needle part 110, and may be disposed close to the head part 111 through this. have.

As an optional embodiment, the harvesting groove 113 may be formed to overlap with one region of the insertion portion 121 of the outer surface portion 120, for example, may be disposed to overlap with the inclined region of the insertion portion 121 have. Through this, by inserting into the epidermis of the biopsy needle set 100 and reducing the depth of insertion during tissue collection, the tissue can be easily collected.

The head part 111 may be formed to be connected to the fast needle body 112 and may be disposed to face an area for biopsy. For example, the head part 111 may include a region that starts to enter through the epidermis of the human body together with the insertion part 121.

The head part 111 may include an inclined area, and for example, may have an inclined area in the same direction as the inclined shape of the insertion part 121.

Through this, the outer needle portion 120 may be inserted so as to penetrate the epidermis of the human body while accommodating the inner needle portion 110 and close to the tissue to be collected.

As an optional embodiment, the inclined area of the head portion 111 may have an angle of 30 degrees or less and may have an inclined shape, and, as a specific example, may have an angle of 20 degrees or less.

After the biopsy needle set 100 of FIG. 1 is inserted through the epidermis toward an area where the tissue is to be collected in the forward direction D1, for example, the tissue of the human body, as shown in FIG. 2, the outer needle 120 is The collecting groove 113 of the covered inner needle part 110 is exposed.

To facilitate this movement, the outer surface of the inner needle portion 110 may be formed as close as possible to the inner surface of the outer needle portion 120 or to have a small gap, through which the inner needle portion 110 and the outer needle portion 120 are integrated. It can enter through the epidermis.

In this case, as an optional embodiment, while the inner needle portion 110 is fixed, the outer needle portion 120 moves in the backward direction D2 to expose the collection groove 113.

Desired tissue can be accommodated in the exposed collection groove 113, and as an optional embodiment, a negative pressure can be formed inside the outer surface 120, so that many tissues can be effectively maintained while being raised in the collection groove 113. have.

After the tissue is collected in the state shown in FIG. 2, the outer needle part 120 advances again in the forward direction D1, and the collecting groove 113 is covered with the outer needle part 120 as shown in FIG. 1, and then a needle for biopsy The set 100 may be used for biopsy of the tissue received from the epidermis and received in the collection groove 113.

Specifically, FIG. 3 shows a region including the insertion portion 121 of the outer needle portion 120 and a region including the head portion 111 of the inner needle portion 110 among the regions of FIG. 1.

The fast needle unit 110 of the biopsy needle set 100 according to the present embodiment may include an exposed area 115.

The exposed area 115 may include an area where the inclination of the inclined area of the head part 111 starts. For example, the exposed area 115 may be formed in one area of the upper end of the head part 111. In addition, the exposed area 115 may correspond to an area forming an obtuse angle of the inclined area of the head part 111.

The exposed area 115 may be exposed without being covered by the end of the outer shell 120.

As an alternative embodiment, the exposed area 115 may be formed in an area facing the opposite direction of the area in which the collecting groove 113 is formed among the areas of the fast needle unit 110.

As an optional embodiment, the exposed area 115 may include a bent portion 116 and an exposed surface 117.

The exposed surface 117 of the exposed area 115 extends from the area of the inner needle part 110 covered at the end of the outer acupuncture part 120 and is not covered by the outer acupuncture part 120, and is inserted through the bent part 116. It is connected to the inclined area of the head part 111 of the needle part 110, for example, it may be connected in a curved shape.

As a specific example, as shown in FIG. 4, the inner needle part 110 has a wide plane of the inclined area of the head part 111 and the exposed area 115 connected thereto is inserted at the end of the outer needle part 120, for example, It may be exposed through the end of the part 121.

As an optional embodiment, the exposed surface 117 of the exposed region 115 may include a flat surface, and may include a surface parallel to the inner surface of the end of the outer portion 120.

The biopsy needle set according to the present embodiment may include an inner needle portion and an outer needle portion. The tissue for biopsy can be easily collected using a biopsy needle set.

As an optional embodiment, the outer needle portion and the inner needle portion include an inclined end portion to easily penetrate into an object for collection, for example, the epidermis of a human body, and reduce pain for a biopsy subject.

In addition, the inner needle portion may include an exposed area on the upper surface, that is, a portion at which the inclination starts, and in a direction facing an area opposite to the collecting groove. It may include an exposed area. When the needleset penetrates the epidermis through such an exposed area, a pain relief effect can be obtained through a gradual angle change.

In addition, after the needle set is adjacent to the tissue, the outer needle is moved so that the collecting groove of the inner needle may be exposed to the tissue.At this time, the outer needle is easy by reducing jamming or interference due to the pressure difference between the outer needle and the inner needle through the exposed area You can go backwards.

In addition, the collection groove is formed on the surface facing the end of the inclined region, that is, the lower surface, and the collection groove is disposed close to the head of the inner needle to facilitate tissue collection.

5 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention, and FIG. 6 is a view for explaining the operation of the needle set for biopsy of FIG. 5.

7 is an enlarged view of an area of FIG. 5, and FIG. 8 is a plan view as viewed from the top of FIG. 7.

5 to 8, the needle set 200 for biopsy according to the present embodiment may include an inner needle part 210 and an outer needle part 220.

The biopsy needle set 200 may accommodate at least one area by removing a tissue of a living body for a biopsy of a living body, for example, a human body.

For convenience of description, differences from those described in the above-described embodiments will be mainly described.

The outer shell 220 may include an outer shell body 222 and an insertion portion 221.

The outer shell body 222 may have a shape similar to a hollow pillar and may have a long elongated shape. Through this, the inner needle portion 210 may be disposed to penetrate through the outer needle portion 220.

The insertion part 221 may be formed to be connected to the outer needle body 222 and may be disposed to face an area for biopsy. For example, the insertion part 221 may include a region that starts to penetrate the epidermis of the human body.

The insertion portion 221 may include an inclined region, for example, may have an inclined shape in an area including the end of the insertion portion 221, and through this, it may easily begin to penetrate the epidermis of the human body.

As an optional embodiment, the acute angle (each b in FIG. 7) of the inclined region of the insertion portion 221 may have an angle of 30 degrees or less and may have an inclined shape, and as an example, it may have an angle of 20 degrees or less and be inclined It can also have a shape. In addition, as a specific example, it may have an angle of approximately 17 degrees. Through this, pain can be reduced when piercing the epidermis of the human body.

As an alternative embodiment, an area at one end of the insertion part 221 may have a tip area having an acute angle.

In addition, as an optional embodiment, the outer needle part 220 may be formed to be able to exercise with respect to the inner needle part 210. For example, the outer needle portion 220 may have an inner space as a hollow shape from the outer needle body 222 to the insertion portion 221, and the inner needle portion 210 may be disposed in the inner space of the outer needle portion 220. I can. As a specific example, the minimum width of the inner needle portion 220 may be at least greater than the maximum width of the inner needle portion 210.

The fast needle part 210 may include a fast needle body 212, a collecting groove 213 and a head part 211.

The inner needle body 212 may be disposed in the inner space of the outer needle part 220.

The collection groove 213 may include a region in which tissue for biopsy is accommodated by using the needle set 200 for biopsy and formed in one region of the outer needle part 220.

The collecting groove 213 has a long elongated shape, for example, may have an appropriate length in the longitudinal direction of the inner needle part 210.

The harvesting groove 213 may have a width in a direction orthogonal to the length direction. As an optional embodiment, the width of the harvesting groove 213 may have a value corresponding to the maximum width of the fast needle body 212.

The collecting groove 213 may be disposed close to the head part 211. For example, the collecting groove 213 may include an inclined side surface along the same direction as the inclined direction of the head part 211 of the inner needle part 210, and may be disposed close to the head part 211 through this. have.

The head portion 211 may be formed to be connected to the fast needle body 212 and may be disposed to face an area for biopsy. For example, the head part 211 may include a region starting to enter through the epidermis of the human body together with the insertion part 221.

The head portion 211 may include an inclined area, and for example, may have an inclined area in the same direction as the inclined shape of the insertion portion 221.

As an optional embodiment, the acute angle of the inclined area of the head part 211 (each a in FIG. 7) may have an angle of 30 degrees or less and may have an inclined shape, and as a specific example, it may be inclined with an angle of 20 degrees or less It can also have a shape.

In addition, the acute angle of the inclined area of the head part 211 (each a in FIG. 7) may be a larger angle than the acute angle of the inclined area of the head part 211 of the outer part 220, and as a specific example, approximately 18 It can have an angle of degrees.

6 is a view for explaining the operation of the biopsy needle set of FIG. 5.

After the biopsy needle 200 of FIG. 5 is inserted through the epidermis toward an area where the tissue is to be collected in the forward direction D1, for example, the tissue of the human body, as shown in FIG. 6, the outer needle 220 is The collecting groove 213 of the covered inner needle part 210 is exposed so that the desired tissue can be accommodated in the exposed collecting groove 213, and after collecting the tissue, the outer needle part 220 is again forward direction (D1) After moving forward to the state as shown in FIG. 5, after the collection groove 213 is covered with the outer needle part 220, the biopsy needle set 200 comes out of the epidermis and the tissue accommodated in the collection groove 213 can be used for biopsy.

Specifically, FIG. 7 shows a region including the insertion part 221 of the outer needle part 220 and a region including the head part 211 of the inner needle part 210 among the regions of FIG. 5.

The fast needle part 210 of the biopsy needle set 200 according to the present embodiment may include an exposed area 215.

The exposed area 215 may include an area where the inclination of the inclined area of the head part 211 starts. For example, the exposed region 215 may be formed in a region of the upper end of the head part 211.

The exposed area 215 may be exposed without being covered by the end of the outer portion 220.

As an alternative embodiment, the exposed area 215 may be formed in an area of the inner needle part 210 facing a direction opposite to the area in which the harvesting groove 213 is formed.

As an optional embodiment, the exposed region 215 may include a bent portion 216 and an exposed surface 217.

The exposed surface 217 of the exposed region 215 extends from the area of the inner needle portion 210 covered at the end of the outer needle portion 220 and is not covered by the outer needle portion 220, and is inserted through the bent portion 216. It is connected to the inclined area of the head part 211 of the needle part 210, for example, it may be connected in a curved shape.

As a specific example, in the inner needle part 210, the wide plane of the inclined area of the head part 211 and the exposed area 215 connected thereto are the end of the outer needle part 220, for example, the end of the insertion part 221. It can be exposed through.

As an optional embodiment, the exposed surface 217 of the exposed region 215 may include a flat surface, and may include a surface parallel to the inner surface of the end of the outer portion 220.

In addition, such an exposed area 215 is easy because the acute angle of the inclined area of the head part 211 of the inner needle part 210 is larger than the acute angle of the inclined area of the insertion part 221 of the outer needle part 220 Can be formed.

In addition, the inner needle portion may include an exposed area on the upper surface, that is, a portion at which the inclination starts, and in a direction facing an area opposite to the collecting groove. It may include an exposed area.

When the needleset penetrates the epidermis through such an exposed area, a pain relief effect can be obtained through a gradual angle change.

The exposed area of a naturally stepped shape is made so that the size of the acute angle of the inclined area of the head part of the inner needle is larger than the size of the acute angle of the inclined area of the insertion part of the outer acupuncture part, for example, 0.5 to 2 degrees, specifically about 1 degree. Can be formed.

9 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention, and FIG. 10 is a view for explaining the operation of the needle set for biopsy of FIG. 9.

FIG. 11 is an enlarged view of an area of FIG. 9, FIG. 12 is a top plan view of FIG. 11, and FIG. 13 is a bottom view of FIG. 11.

9 to 13, the biopsy needle set 300 according to the present embodiment may include an inner needle part 310 and an outer needle part 320.

The biopsy needle set 300 may accommodate at least one area by removing a tissue of a living body for a biopsy of a living body, for example, a human body.

For example, the biopsy needle set 300 may define an examination direction based on the biopsy direction D in the forward direction D1 or the backward direction D2. For convenience of description, differences from those described in the above-described embodiments will be mainly described.

The outer shell 320 may include an outer shell body 322 and an insertion portion 321.

The outer shell body 322 may have a shape similar to a hollow shape and have an elongated shape. Through this, the inner needle portion 310 may be disposed to penetrate through the outer needle portion 320.

The insertion part 321 may be formed to be connected to the outer needle body 322 and may be disposed to face an area for biopsy. For example, the insertion part 321 may include a region that starts to penetrate the epidermis of the human body.

The insertion portion 321 includes an inclined region, for example, may have an inclined shape in an area including the end of the insertion portion 321, and through this, it is possible to easily penetrate the epidermis of the human body and begin to enter.

As an optional embodiment, the inclined region of the insertion portion 321 may have an angle of 30 degrees or less and may have an inclined shape, for example, may have an angle of 20 degrees or less and have an inclined shape. As a specific example, it may have an angle of approximately 17 degrees. Through this, pain can be reduced when piercing the epidermis of the human body.

As an optional embodiment, the area at one end of the insertion part 321 may have a tip area having an acute angle, for example, a tip area is formed at an acute angle at the lowest part, that is, the area where the skin of the human body begins to be pierced first. Can be. As a specific example, a tip region may be formed under the inclined region of the insertion part 321.

Through this, it is easily inserted into the epidermis of the human body from the insertion part 321 so that the biopsy needle set 300 can be easily moved in the direction of the desired tissue of the living body.

In addition, a cutting area 327 may be formed on an outer surface of the insertion part 321, that is, on a surface opposite to the inner surface facing the fast needle 310.

Specifically, one or more cutting regions 327 are formed in a region of the lower portion of the insertion portion 321, that is, a region of the region where the insertion portion 321 begins to penetrate the epidermis of the human body and includes the starting point of the inclined region of the acute angle. Can be.

For example, the angle formed by the cutting area 327 and the inner surface of the insertion part 321 in the lower area of the insertion part 321 through the cutting area 327, that is, in one area where the skin begins to penetrate, is an acute angle. Can be.

As an optional embodiment, two cutting regions 327 may be formed on both sides of the lower surface of the insertion part 321 based on the forward direction D1, for example symmetrically.

Through the inclined shape of the insertion part 321 and the cutting area on the outer surface of the corresponding area, the outer surface part 320 is inserted more naturally and easily when it penetrates the epidermis of the human body, thereby improving the convenience of inserting tissue collection. Can be.

As an optional embodiment, referring to FIG. 13, the two cutting areas 327 may be areas cut from the tip area of the insertion part 321, and may be formed to be spaced apart from each other at least in a region separated from the tip area. Through this, the sense of resistance through the epidermis when the outer surface part 320 penetrates the epidermis can be reduced, and tissue collection for the test object can be smoothly performed.

In addition, as an optional embodiment, the outer needle portion 320 may be formed to be able to exercise with respect to the inner needle portion 310. For example, the outer shell part 320 may have an inner space as a hollow shape from the outer shell body 322 to the insertion part 321, and the inner needle part 310 may be disposed in the inner space of the outer shell part 320 I can. As a specific example, the minimum width of the inside of the outer needle part 320 may be at least greater than the maximum width of the inner needle part 310.

The fast needle part 310 may include a fast needle body 312, a collecting groove 313 and a head part 311.

The inner needle body 312 may be disposed in the inner space of the outer needle portion 320.

The collection groove 313 may include a region in which tissue for biopsy is accommodated by using the needle set 300 for biopsy and formed in one region of the outer needle part 320.

The harvesting groove 313 is a long elongated shape, for example, may have an appropriate length in the longitudinal direction of the inner needle portion 310.

The harvesting groove 313 may have a width in a direction orthogonal to the length direction. As an optional embodiment, the width of the harvesting groove 313 may have a value corresponding to the maximum width of the fast needle body 312.

As an optional embodiment, the harvesting groove 313 may have a greater depth at the center than both edges based on the width direction. For example, the harvesting groove 313 may become deeper toward the center from both edges based on the width direction, and through this, a large number of tissues may be effectively accommodated in the harvesting groove 313.

The harvesting groove 313 may be disposed close to the head part 311. For example, the collecting groove 313 may include an inclined side surface along the same direction as the inclined direction of the head part 311 of the inner needle part 310, and may be disposed close to the head part 311 through this. have.

As an optional embodiment, the harvesting groove 313 may be formed to overlap an area of the insertion portion 321 of the outer surface portion 320, for example, may be disposed to overlap with an inclined area of the insertion portion 321 have. Through this, by inserting into the epidermis of the biopsy needle set 300, the depth of insertion is reduced when the tissue is collected, so that the tissue can be easily collected, and pain to the tissue collection object can be reduced.

The head part 311 may be formed to be connected to the fast needle body 312 and may be disposed to face an area for biopsy. For example, the head part 311 may include a region starting to enter through the epidermis of the human body together with the insertion part 321.

The head part 311 may include an inclined area, and for example, may have an inclined area in the same direction as the inclined shape of the insertion part 321.

Through this, the outer needle part 320 may be inserted so as to penetrate the epidermis of the human body while accommodating the inner needle part 310 and close to the tissue to be collected.

As an optional embodiment, the acute angle of the inclined area of the head part 311 may have an angle of 30 degrees or less and may have an inclined shape, and as a specific example, it may have an angle of 20 degrees or less and have an inclined shape.

In addition, the acute angle of the inclined area of the head part 311 may be a larger angle than the acute angle of the inclined area of the head part 311 of the outer part 320, and as a specific example, it may have an angle of approximately 18 degrees.

FIG. 10 is a view for explaining the operation of the biopsy needle set of FIG. 9, and a description of this operation is the same as described in the above-described embodiments, and thus will be omitted.

FIG. 11 shows a region including the insertion portion 321 of the outer needle portion 320 and a region including the head portion 311 of the inner needle portion 310 among the regions of FIG. 9.

The fast needle part 310 of the biopsy needle set 300 according to the present embodiment may include an exposed area 315.

The exposed area 315 may include an area where the inclination of the inclined area of the head part 311 starts. For example, the exposed area 315 may be formed in one area of the upper end of the head 311. In addition, the exposed area 315 may correspond to an area forming an obtuse angle of the inclined area of the head part 311.

The exposed area 315 may be exposed without being covered by the end of the outer portion 320.

As an alternative embodiment, the exposed area 315 may be formed in an area of the inner needle part 310 facing a direction opposite to the area in which the collecting groove 313 is formed.

As an optional embodiment, the exposed area 315 may include a bent portion 316 and an exposed surface 317.

The exposed surface 317 of the exposed area 315 extends from the area of the inner needle 310 covered at the end of the outer acupuncture part 320 and is not covered by the outer acupuncture part 320, and is inserted through the bent part 316. It is connected to the inclined area of the head part 311 of the needle part 310, for example, it may be connected in a curved shape.

As a specific example, in the inner needle part 310, the wide plane of the inclined area of the head part 311 and the exposed area 315 connected thereto are the end of the outer needle part 320, for example, the end of the insertion part 321. It can be exposed through.

As an optional embodiment, the exposed surface 317 of the exposed region 315 may include a flat surface, and may include a surface parallel to the inner surface of the end portion of the outer portion 320.

In addition, as an optional embodiment, in the exposed area 315, the acute angle of the inclined area of the head part 311 of the inner needle part 310 is greater than the acute angle of the inclined area of the insertion part 321 of the outer needle part 320 It can be formed easily by having a.

In addition, a cutting area can be formed on the outer surface of the outer surface, and specifically, a cutting area is formed on the outer surface of the area where the inclination starts and the tip area that starts to penetrate the epidermis, so that the outer surface can easily penetrate the epidermis. It can reduce pain.

FIG. 14 is a diagram showing a modified example of FIG. 12, FIG. 15 is a side view of area A of FIG. 14 viewed from the S direction, and FIG. 16 is a cross-sectional view taken along lines XV-XV of FIGS. 14 and 15. .

The inner needle part of the biopsy needle set 300 ′ according to the present embodiment may include an exposed region 315 ′.

The exposed region 315 ′ may include a bent portion 316 ′ and an exposed surface 317 ′ as an optional embodiment.

As a specific example, the wide plane of the inclined area of the head part 311 ′ and the exposed area 315 ′ connected thereto may be exposed through the end of the outer needle part, for example, the end of the insertion part 321 ′. .

In addition, a cutting region 328 ′ may be formed on an outer surface of the insertion part 321 ′, that is, on a surface opposite to the inner surface toward the inner needle part.

Specifically, a cutting region 328 ′ may be formed to face the end of the insertion part 321 ′ and a surface facing the head part 311 ′ of the fast needle part.

As an alternative embodiment, the cutting area 328' may be formed to surround the head portion 311'. It may include a curved surface.

For example, the cutting region 328 ′ may include a region cut in a direction from the outside to the inside of the insertion part 321 ′.

As a specific example, as illustrated in FIG. 16, the cutting area 328 ′ may be spaced apart from an extension line of the plane of the head part 311 ′, and specifically, may be spaced apart to have a separation angle (c).

In addition, this cutting area 328' is formed to surround the head portion 311' and is formed to be spaced apart to have an extension line of the plane of the head portion 311' and a separation angle (c). It may be an area similar to.

FIG. 17 is a plan view schematically showing a part of a biopsy needle set according to another embodiment of the present invention, FIG. 18 is a side view viewed from the direction K of FIG. 17, and FIG. 19 is a bottom surface viewed from the direction B of FIG. 18 It is a degree.

For convenience of explanation, the description will focus on differences from the above-described embodiment.

A wide plane of the inclined area of the head part 311" and the exposed area 315" connected thereto may be exposed through the end of the outer needle, for example, the end of the insertion part.

In addition, a cutting area 328" may be formed in an area of the outer surface of the insertion part. A cutting area 328" may be formed on a surface opposite to the inner surface facing the inner needle of at least an area of the outer surface of the insertion part of the outer surface.

Specifically, the cutting area 328" may be formed to face the end of the insertion part, for example, a surface facing the head part 311" of the inner needle part.

As an alternative embodiment, the cutting area 328" may be formed in the lower part of the insertion part corresponding to the head part 311", that is, in the area starting to penetrate the skin.

As an optional embodiment, the cutting area 328" may have a round shape. For example, the cutting area 328" may have a shape that is naturally connected without abrupt bending, and cutting as illustrated in FIG. 18 The edge of region 328" may comprise a curved line.

As an alternative embodiment, this cutting area 328" may comprise a curved surface, and may be cut to face inward from the outside of the edge of the head portion. For example, the cutting area 328" may include a curved edge. In particular, as shown in FIG. 19, the edge of the curve may be included when viewed from the bottom.

Through this, when the outer needle penetrates the epidermis of the object to be examined for tissue collection, it is gently and naturally inserted into the epidermis to reduce the pain of the object to be examined.

As an optional embodiment, the cutting area 328" may be formed to surround the end of the insertion part of the outer surface part, for example, may be formed to surround the head part 311 ′. It may include a curved surface. For example For example, the cutting region 328 ′ may include a cut region rounded from the edge of the insertion portion toward the inside from the outside.

Referring to FIG. 18, when it is assumed that a central axis parallel to the movement direction D based on the movement direction D exists in the needle set 300 ″, the cutting area 328 ″ may reach this central axis. . That is, the cutting area 328 ′ may be formed to rise until 50 percent of the total thickness of the needle set 300 ″ is reached based on FIG. 18.

In addition, as an optional embodiment, such a cutting area may be formed beyond this central axis. As a specific example, the cutting area 328 ′ may be formed to rise until the thickness of the needle set 300 ″ becomes more than 60 percent based on the total thickness of the needle set 300 ″ based on FIG. 18. As another example, the needle based on FIG. 18. The cutting area 328 ′ may be formed to rise until the total thickness of the set 300 ″ becomes two-thirds or more.

In addition, when the outer needle part and the inner needle part are moved, unnecessary chewing of the tissue to be examined in the lower surface of the outer needle part, that is, a region adjacent to the bottom surface of the insertion part, can be reduced, thereby reducing pain.

As an optional embodiment, the inner needle portion of the biopsy needle set 300" may include an exposed area, as described in the above-described embodiment.

20 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention, and FIG. 21 is a view for explaining the operation of the needle set for biopsy of FIG. 20.

The biopsy needle set 1000 may accommodate at least one area by removing a tissue of a living body for a biopsy of a living body, for example, a human body.

For example, the biopsy needle set 1000 may define an examination direction based on the biopsy direction D in the forward direction D1 or the backward direction D2. Specifically, the needle set for biopsy 100 is moved in the forward direction (D1) with respect to a living body, for example, the epidermis of the human body, penetrates an area of the epidermis, is inserted into the epidermis, reaches the internal area of the living body desired for biopsy, and reaches the desired tissue. The biopsy can be easily carried out on the tissue removed by the biopsy needle set 1000 by removing and moving in the backward direction D2 to come out of the epidermis.

The biopsy needle set 1000 according to the present embodiment may include an inner needle portion 1410 and an outer needle portion 1420.

The length of the outer needle portion 1420 may be shorter than the length of the inner needle portion 1410.

The configuration of the outer needle portion 1420 and the inner needle portion 1410 may be selectively applied to the above-described embodiments, so a detailed description of the configuration will be omitted.

As shown in FIG. 20, the needle set 1000 can be moved to a desired area by moving the needle set 1000 in a state in which the needle set 1000 is advanced in a state in which the external needle 1420 is maximally advanced with respect to the forward direction D1, and after that, as shown in FIG. 1420) is moved in the backward direction (D2) to expose the collecting groove of the inner needle part 1410 to receive the tissue, and in this case, as an optional embodiment, the negative pressure between the inside of the outer needle part 1420 and the inner needle part 1410 Occurrence can facilitate tissue collection.

After the tissue is collected, as shown in FIG. 20, the outer surface part 1420 moves again to cover the collection groove, and then the needle set 1000 is moved so that it is away from the tissue, and then the tissue can be acquired from the collection groove and necessary inspection can be performed.

22 is a side cross-sectional view schematically showing a needle set for biopsy according to another embodiment of the present invention, and FIG. 23 is a view for explaining the operation of the needle set for biopsy of FIG. 22.

The biopsy needle set 2000 may accommodate at least one area by removing a tissue of a living body for a biopsy of a living body, for example, a human body.

For example, the biopsy needle set 2000 may define an examination direction based on the biopsy direction D in the forward direction D1 or the backward direction D2. Specifically, the biopsy needle set 200 is moved in the forward direction (D1) with respect to a living body, for example, the epidermis of the human body, penetrates an area of the epidermis, is inserted into the epidermis, reaches the internal area of the living body desired for biopsy, and reaches the desired tissue. Is removed and moved in the backward direction (D2) to come out of the epidermis, so that the biopsy of the tissue removed by the biopsy needle set 2000 can be easily performed.

The biopsy needle set 2000 according to the present embodiment may include an inner needle part 2410, an outer needle part 2420, and a moving block 2500.

The length of the outer needle portion 2420 may be shorter than the length of the inner needle portion 2410.

Since the configurations of the outer needle part 2420 and the inner needle part 2410 can be selectively applied to the above-described embodiments, a detailed description of the configuration will be omitted.

As shown in FIG. 22, the needle set 2000 may be moved to a desired area by moving the needle set 2000 in a state in which the outer needle part 2420 is moved to the maximum with respect to the advance direction D1. After that, as shown in FIG. 23, the outer needle part 2420 is moved in the backward direction D2 to expose the collecting groove of the inner needle part 2410 to receive the tissue, and at this time, as an alternative embodiment, the outer needle part 2420 It is possible to facilitate tissue collection due to the generation of negative pressure between the inside of and the fast needle 2410.

After the tissue is collected, as shown in FIG. 22, the outer needle part 2420 moves again to cover the collection groove, and then the needle set 2000 is moved so as to move away from the tissue, and then the tissue can be acquired from the collection groove and necessary inspection can be performed.

The movement of the outer needle part 2420 to the inner needle part 2410 may be performed using the moving block 2500.

The moving block 2500 may be fixed through a fixed point HST, through which the outer needle portion 2420 does not pass through the inner needle portion 2410 when the outer needle portion 2420 moves maximum in the forward direction D1, and the inner needle portion 2410 and The same end can be maintained, and in this state, the object to be collected, for example, the epidermis of the human body can be integrated and pierced.

As an optional embodiment, the fixing point HST may be disposed in a region inside the housing accommodating at least one region of the needle set 2000.

In addition, by moving the moving block 2500 in the backward direction D2, the outer needle part 2420 can be easily moved backward to expose the collecting groove of the inner needle part 2410, and after collecting the tissue, the moving block again (2500) is moved in the forward direction (D1) so that the outer shell (2420) is advanced, it is possible to cover the collection groove.

The biopsy needle set of the present embodiment may include an inner needle portion and an outer needle portion, and the outer needle portion can be easily moved. Through this, tissue for biopsy can be easily collected using a needle set for biopsy.

In addition, as in the above-described embodiment, the outer needle portion and the inner needle portion include an inclined end portion to easily penetrate into an object for collection, for example, the epidermis of a human body, and reduce pain for a biopsy subject.

The size of the acute angle of the inclined area of the head of the inner needle is larger than the size of the acute angle of the inclined area of the insertion part of the outer needle, for example, 0.5 to 2 degrees, specifically about 1 degree, so that the exposed area is naturally stepped. Can be formed.

In the detailed description of the present invention described above, it has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those of ordinary skill in the art, the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and changes can be made to the present invention within a range not departing from the technical field.

Claims

As a biopsy needle set comprising an inner needle portion and an outer needle portion,

The outer portion,

Outer shell body; And

An insertion portion connected to the outer needle body and having an inclined shape toward an area for biopsy,

The inner needle portion is formed to penetrate the outer needle portion,

Fast needle body;

A collecting groove formed in a region of the fast needle body; And

A head portion connected to the fast needle body and inclined toward an area for biopsy and inclined along the same direction as the inclined shape of the cut portion; And

A needle set for biopsy comprising an exposed area connected to an inclined area of one area of the head and exposed without being covered by an end of the cut portion of the outer needle.
The method of claim 1,

The inclined area of the insertion part includes an area forming an acute angle,

The inclined area of the head part includes an area forming an acute angle,

A biopsy needle set formed such that the size of the acute angle of the head part is larger than the size of the acute angle of the insertion part.
The method of claim 1,

A biopsy needle set having a cutting region formed on an outer surface of the region corresponding to the insertion part of the outer needle.
The method of claim 1,

The needle set for biopsy formed so as to move the outer needle portion relative to the inner needle portion.
The method of claim 1,

The length of the outer needle portion is a biopsy needle set having a value smaller than the length of the inner needle portion.
As a biopsy needle set comprising an inner needle portion and an outer needle portion,

The inner needle portion is formed to penetrate the outer needle portion,

Fast needle body;

A collecting groove formed in a region of the fast needle body; And

And a head portion connected to the fast needle body and inclined toward an area for biopsy and inclined along the same direction as the inclined shape of the cut portion,

The outer portion,

Outer shell body;

An insertion portion connected to the outer needle body and having an inclined shape toward an area for biopsy, and

A needle set for biopsy in which a cutting area is formed in at least one area of an outer surface of the insertion part.
The method of claim 6,

The cutting area is a biopsy needle set including a curved surface.
The method of claim 6,

The edge of the cutting area is a biopsy needle set including a curve.