KR102337041B1 - Guiding-needle for biopsy - Google Patents

Abstract

The present invention relates to a guiding needle for a biopsy, and more particularly, in configuring the guiding needle used to secure a needle (collection needle) entry and exit path of a biopsy gun during a biopsy (biopsy), It relates to a guiding needle for biopsy that can prevent air inflow to the treatment site by increasing the shielding power and completely block blood leakage occurring at the treatment site.
According to the present invention, the needle body for securing the entry and exit path of the collection needle of the biopsy gun for tissue collection, in a state inserted into a lesioned living organ; A body body integrally formed at the rear of the needle body for guiding the entry and exit of the collection needle as well as the user's grip; and a sealing cap that covers the end of the body to block the inlet and outlet of the collection needle in order to prevent the inflow of air to the treatment site through the needle body and to prevent external leakage of blood generated at the treatment site. characterized in that

Description

Guiding needle for biopsy {GUIDING-NEEDLE FOR BIOPSY}

The present invention relates to a guiding needle for a biopsy, and more particularly, in configuring the guiding needle used to secure a needle (collection needle) entry and exit path of a biopsy gun during a biopsy (biopsy), It relates to a guiding needle for biopsy that can prevent air inflow to the treatment site by increasing the shielding power and completely block blood leakage occurring at the treatment site.

Recently, with the rapid development of imaging techniques using ultrasound (US), computed tomography (CT), and magnetic resonance image (MRI), biopsy of various lesions using these methods is widely used thanks to the development of various biopsy needles.

In particular, in the case of percutaneous needle biopsy, it is possible to secure sufficient samples for not only histological diagnosis, but also for detailed examinations such as electron microscopy, immunohistochemical staining, and tumor markers, thereby improving the diagnosis rate in both qualitative and quantitative terms. can be greatly increased.

As an example, percutaneous tissue biopsy using biopsy guns is a core tissue biopsy or a cutting needle biopsy in various organs such as the liver, kidney, and breast, including the prostate. It is used for biopsy of various lesions.

Here, a schematic view of the structure of the biopsy gun (biopsy instrument), as shown in FIG. 1 , a holding body 910 for automatic (or semi-automated) operation of the instrument in addition to user holding, and the holding body It consists of a collection needle 920 which is a needle extending long from 910 to collect (secure) a part of the tissue by inserting it into a lesioned living organ.

In addition, the gripping body 910 is configured with a pusher 911 and a spring (not shown) necessary for the forward and backward motion of the collecting needle 920, and easy gripping and convenient operation are possible by hanging the user's finger. At least one ring portion 912 is formed.

And, the collection needle 920, the outer needle 921, which is an external introducing pipe, and the inner needle 921 that advances from the tip (pointed end) of the outer needle 921 when the pusher 911 is operated. It is composed of a needle 922, and a sampling groove 922-1 for securing a sample is formed in the vicinity of the tip of the inner needle 922.

To explain the tissue harvesting process using the biopsy gun 900 step by step, first, the exact location of the lesion and the location to insert the harvesting needle 920 are determined using ultrasound, and then, the Local anesthesia for a certain distance from the skin to the lesion.

After that, in a state in which the collecting needle 920 is inserted to the location of the lesion under ultrasound guidance, the outer needle 921 is pressed by pressing the pusher 911 while adjusting the position of the outer needle 921 of the collecting needle 920. Through allowing the inner needle 922 to advance from the tip of the inner needle 922, it is possible to secure a sample (tissue collection) as a part of the tissue is collected into the collection groove 922-1 of the inner needle 922.

However, in order to secure a sample for a biopsy several times (hereinafter referred to as "biopsy"), the collection needle 920 of the biopsy gun 900 may be repeatedly inserted into a lesioned biological organ. Each time the collection needle 920 can go through a different path, it can cause various side effects to the patient, cause the inconvenience of finding the lesion for the medical staff every time, and it requires experience and time to get used to the technique. have.

In order to compensate for this disadvantage, a guiding needle of a pipe type that secures the entry and exit path of the collection needle 920 has been used together, but the inside of the guiding needle is removed from the biopsy gun 900. There is a problem in that blood flows out along the induction path of the collection needle 920 in the process of repeatedly collecting tissue while the collection needle 920 goes in and out several times, and unnecessary actions such as wiping the flowing blood with gauze There is a problem of induction, and there is also a problem such as blood splashing onto the operator's face during the tissue collection process.

Accordingly, through Korean Patent Registration No. 10-1578361, the biopsy introducer needle (guiding needle) is further configured with a packing having a fine slit, which affects the insertion and removal of the biopsy needle (collection needle) Disclosed is an introducer needle for biopsy that can block the inflow of air into the treatment site without giving it, and a gun for biopsy coupled thereto.

However, as described above, when the introducer needle repeatedly passes through the packing, the shape retaining force of the packing is lowered and the problem of the slit is widened occurs. can't be done effectively

Moreover, as described above, when air blocking becomes impossible, there have been existing problems such as blood flowing out through the slit in the process of collecting the tissue several times.

In the end, the biopsy gun has a packing for sealing the passage through which the collection needles enter and exit, but through structural improvement of the packing, the slit forming the passage is prevented from spreading (shape deformation) even if the collection needles repeatedly enter and exit the passage. The research and development of guiding needles that can sustain the sealing power of the device are urgently needed.

(Document 1) Republic of Korea Patent No. 10-1578361 (Registration date: 2015.12.11.)

An object of the present invention is to solve the above problems, and a sealing cap that is a packing that covers the end of the body through which the collection needle of the biopsy gun enters and finally advances is provided, and the sealing cap is used as a closing member and a shielding member and to provide guiding needles for biopsy so that the shielding power of the inlet and outlet (entry hole) of the collecting needles can be greatly improved by them.

Another object of the present invention is to ensure that the central portion of the shielding member having the slit formed on the inner surface of the finishing member is always compressed, so that the slit does not open even when the collection needle is repeatedly inserted and exited through the sealing cap. It is to provide a guiding needle for biopsy that prevents air inflow and prevents blood leakage from the treatment site so that the effect can be continued.

In order to achieve the above object, the present invention, a needle body for securing the entry and exit path of the collection needle of the biopsy gun for tissue collection, in a state that is inserted into a living organ with a lesion; In addition to the user's grip, for guiding the entry and exit of the collection needle, the body body integrally formed in the rear of the needle body; and a sealing cap that covers the end of the body to block the inlet and outlet of the collection needle in order to prevent the inflow of air into the treatment site through the needle body and to prevent external leakage of blood generated at the treatment site. characterized in that

In addition, the needle body, the tip of which is in the form of a needle with a sharp tip, by forming a hollow pipe shape, an induction path capable of entering and exiting the collection needle is provided inside along the longitudinal direction, and the body is, of the needle body As the distal end is inserted into the center, it is formed integrally with each other, and continues from the insertion end of the needle body and is opened to the center of the distal end to form an entry hole for inducing entry of the collection needle into the induction path, the entry hole, For smooth entry of the extraction needles, the diameter of the opening is large and the diameter meeting the needle body is narrow.

In addition, the sealing cap is made of a synthetic resin material of a flexible nature, arranged to close the end surface of the body, a closing member through which the inlet and out holes of the extraction needle enter and exit through the center, and a synthetic resin material of the flexible nature and shielding the entrance hole in a state closely arranged on the inner surface of the closing member, but consisting of a shielding member formed in the center of the cross-shaped slit that opens so that the collecting needles can pass when the collecting needles interfere, and the closing member is formed with a finishing part covering the end surface of the body, and an edge part extending from the edge of the closing part and surrounding the circumferential surface of the body, on the inner surface of the edge part at the corner where the finishing part and the edge part meet, The assembly groove into which the edge portion of the shielding member is inserted faces inward.

In addition, in the shielding member, a bent portion that can be closely attached to the inner surface of the entry hole is bent from its periphery around the slit to protrude in one direction, and an arc-shaped portion convex in the opposite direction of the bent portion is formed inside the bent portion, When the bent part is in close contact with the inner surface of the entry hole, it exhibits an action of shape deformation that shrinks to the inside, and thus the arc-shaped part continues the action of shape deformation to be squeezed into the entry hole, so that the collection needle of the biopsy gun enters and exits the entry hole. Even if the slit is repeatedly entered and exited, the opening of the slit is prevented.

As can be clearly seen from the above description, in the guiding needle for biopsy of the present invention, the entry hole in the center of the body through which the collection needles of the biopsy gun are inserted and exited by the sealing cap covering the end of the body is blocked, so that of the biopsy gun There is an effect of preventing the inflow of air into the treatment site through the needle body inserted into a living organ in preference to the collection needle as well as the leakage of blood from the treatment site.

In addition, according to the structural improvement of the sealing cap, which is combined as a closing member and a shielding member and has a one-way compression action of the central portion of the shielding member having a cross-shaped slit formed, the collection needle of the biopsy gun repeatedly passes through the entry hole of the body. By preventing the slit from spreading (shape deformation) even when going in and out, the sealing force of the passage (entry hole) is continuously maintained.

At the same time, in carrying out percutaneous tissue biopsy using a biopsy gun, the effect of preventing air inflow to the treatment site and blocking blood leakage occurring at the treatment site as described above, and obtaining the maximum amount of tissue with minimal side effects It is a very useful invention that can contribute greatly to accurate diagnosis and at the same time prevent a situation in which the operator can become infected with the patient's blood.

1 is a perspective view showing the configuration of a general biopsy gun.
2 and 3 are a perspective view and a cross-sectional view showing the configuration of the guiding needle for biopsy according to the present invention.
4 and 5 are an exploded perspective view and a cross-sectional view showing the configuration of a sealing cap in the guiding needle for biopsy according to the present invention.
Figure 6 (a) (b) is an exemplary sectional view showing the coupling relationship of the sealing cap in the guiding needle for biopsy according to the present invention.
Figure 7 is a state diagram showing an embodiment of the guiding needle for biopsy according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily practice the present invention.

First, it should be noted that in adding reference numerals to the components of the drawings, the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in the description of the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 and 3 of the accompanying drawings are a perspective view and a cross-sectional view showing the configuration relationship of the guiding needle for a biopsy according to the present invention, and FIGS. 4 and 5 are the configuration relationship of the sealing cap in the guiding needle for a biopsy according to the present invention. is an exploded perspective view and cross-sectional view showing, Figure 6 (a) (b) is an exemplary sectional view showing the coupling relationship of the sealing cap in the guiding needle for a biopsy according to the present invention, Figure 7 is a guiding for a biopsy according to the present invention It is a use state diagram showing an embodiment of the needle.

As shown in Figures 2 and 3, the guiding needle (A) for biopsy according to the present invention is a collection needle ( Figure 1: Needle body (1) to secure the entry and exit path of 920, body body (2) integrally formed in the rear of the needle body (1) for guiding the entry and exit of the collection needle (920) as well as the user's grip ), and to prevent the inflow of air into the treatment site through the needle body 1 and to prevent external leakage of blood generated at the treatment site, cover the end of the body 2 to cover the collection needle 920 It includes a sealing cap (3) so that the entrance and exit parts are shielded (遮蔽: to cover, to cover).

The needle body 1 inserts the collection needle 920 of the biopsy gun 900 used for tissue collection into the living organ with the lesion before inserting it into the living organ with the lesion first, so that the collection needle 920 enters and exits the path. In order to secure the It is provided inside.

The body 2 is for guiding the entry of the collection needle 920 into the induction path 11 as well as the gripping operation of the needle body 1, and the distal end of the needle body 1 is inserted in the center As a result, it is formed integrally with each other, and it continues from the insertion end of the needle body 1 and opens to the center of the end to guide the extraction needle 920 into the needle body 1 guideway 11. The entry hole 21 ) is formed.

Here, the entry hole 21, the collection needle 920 as the diameter of the opening is large for smooth entry of the collection needle 920 and a narrow diameter meeting the needle body 1 is formed, It is possible that it can be easily inserted into the guideway 11 of the sieve 1 .

The sealing cap 3 is for blocking the end of the body 2 in order to prevent the opening of the entry hole 21 formed in the center of the body 2, and as shown in Figs. Similarly, a finishing member 31 made of a flexible material such as silicone or rubber and arranged to close the end surface of the body 2, through which the inlet and outlet holes 311 of the collecting needle 920 are penetrated in the center, and , made of a flexible material such as silicone or rubber and shielding the entrance hole 311 in a state closely arranged on the inner surface of the closing member 31, but when the collecting needle 920 interferes with the collecting needle 920 A cross-shaped (+) slit 321 that is widened so that it can pass through is composed of a shielding member 32 formed in the center.

The closing member 31 includes a closing part 31-1 covering the end surface of the body 2 and a peripheral surface of the body 2 extending from the edge of the closing part 31-1. A surrounding edge portion 31-2 is formed.

And, on the inner surface of the edge part 31-2 at the corner where the finishing part 31-1 and the edge part 31-2 meet, an assembly groove 312 into which the edge part of the shielding member 32 is inserted. ) is introverted.

The shielding member 32 has a bent portion 32-1 that can be in close contact with the inner surface of the entry hole 21 of the body 2 is bent from the periphery around the slit 321 to protrude in one direction, and the A convex arc-shaped portion 32-2 is formed inside the bent portion 32-1 in a direction opposite to the bent portion 32-1, and as shown in FIG. 6(a)(b), the When the bent portion 32-1 is in close contact with the inner surface of the entry hole 21, the arc-shaped portion 32-2 is compressed to the entry hole 311 as it shows a shape transformation action that retracts inward. By continuing the action of the deformation, even if the collection needle 920 of the biopsy gun 900 repeatedly enters and exits the entrance and exit hole 311 of the center of the closing member 31, the slit 321 can be prevented from spreading. It is possible to be able

The operation of the guiding needle (A) for biopsy according to the present invention having the above configuration will be described in detail as follows.

First, a normal biopsy gun 900 is used to collect tissue from a lesioned body organ. The guiding needle (A) for the treatment is preferentially inserted into the treatment site.

Accordingly, whenever the collection needle 920 of the biopsy gun 900 is repeatedly inserted into a lesioned living organ for the purpose of securing (collecting) a sample (tissue) for a biopsy several times, the collection needle 920 The problem of being able to go through this other route can be solved simply.

However, in the process of repeatedly collecting tissue (see FIG. 7 ), the collecting needle 920 of the biopsy gun 900 goes in and out of the guiding needle (A) of the present invention several times (see FIG. 7), the needle body (1) Air can be introduced into the treatment site along the induction path 11 and blood generated from the treatment site can flow out. can be resolved

Specifically, as the shielding member 32 of the sealing cap 3 normally shields the entrance and exit holes 311 of the closing member 31, the sealing state of the entry hole 21 of the body 2 is It is maintained so that the inflow of air into the treatment site through the induction path 11 of the needle body 1 as well as the blood leakage occurring at the treatment site through the induction path 11 can be completely prevented.

And, as described above, due to the process of repeatedly entering and advancing the collection needle 920 of the biopsy gun 900 into the entry hole 21 of the body 2, the shielding member of the sealing cap 3 (32) The problem in that the cross-shaped slit 321 cut in the center is opened and a gap is generated, so that the entry hole 21 can be maintained in an open state, the bent part 32- of the shield member 32 1) and the arc-shaped portion 32-2 can be prevented according to the deforming action.

Specifically, in the process in which the bent portion 32-1 protruding in one direction from the periphery around the slit 321 of the shielding member 32 is in close contact with the inner surface of the entry hole 21 of the body 2 The bent portion 32-1 represents the action of a shape transformation in which the bent portion 32-1 shrinks inward due to interference by the inner surface of the entry hole 21, and accordingly, the arc-shaped portion 32-2 is pressed into the entry hole 311. The action of the desired shape transformation is continued, whereby the arc-shaped part 32-2 even if the collection needle 920 of the biopsy gun 900 repeatedly enters and exits the entry/exit hole 311 of the center of the closing member 31 ) continues the action to be in close contact with the inner surface of the closing member 31 having the entry and exit holes 311, and thus the slit 321 in the center of the arc-shaped part 32-2 is a guideway for the needle body 1 (11) leads to an action that is prevented from spreading to the side, and it is possible that, in the end, the entrance and exit holes 311 of the center of the closing member 31 can be maintained in a shielded state.

In summary, according to the guiding needle (A) for biopsy of the present invention, the body body to which the collection needle 920 of the biopsy gun 900 is inserted and removed by the sealing cap 3 covering the end of the body 2 . (2) As the central entry hole 21 is shielded, the inflow of air into the treatment site through the needle body 1 inserted into the living organ in preference to the collection needle 920 of the biopsy gun 900 is Of course, it is possible to achieve the effect of preventing blood leakage from the treatment site.

In addition, according to the structural improvement of the sealing cap (3) combined with the closing member (31) and the shielding member (32) and the one-way pressing action of the central part of the shielding member (32) formed with the cross-shaped slit (321) is induced, Even if the collection needle 920 of the biopsy gun 900 repeatedly enters and exits the entry hole 21 of the body 2, the slit 321 is prevented from spreading (shape deformation), thereby eventually entering the entry. It is possible to achieve the effect that the sealing force of the hole 21 is continuously maintained.

The above description is merely illustrative of the technical idea of the present invention, and a person skilled in the art to which the present invention pertains may make various modifications, changes and substitutions within the scope without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings . And, the protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

A: guiding needle, 1: needle body
2: body, 3: sealing cap
11: taxiway, 21: entrance hall
31: finishing member, 32: shielding member
31-1: finishing part, 31-2: edge part
32-1: bent part, 32-2: arc-shaped part
311: entrance hole, 312: assembly home
321: slit

Claims (4)

A needle body that secures the entry and exit paths of the collection needles of the biopsy gun for tissue collection in a state of being inserted into a living organ with a lesion;
A body body integrally formed at the rear of the needle body for guiding the entry and exit of the collection needle as well as the user's grip; and,
In order to prevent the inflow of air into the treatment site through the needle body and to prevent external leakage of blood generated at the treatment site, a sealing cap covering the end of the body to block the input and output portion of the collection needle; includes,
The needle body is in the form of a needle with a sharp tip, but by forming a hollow pipe, an induction path through which the extraction needle can enter and exit is provided along the longitudinal direction,
The body is formed integrally with each other as the distal end of the needle body is inserted into the center, and continues from the insertion end of the needle body and is opened to the center of the distal end. is formed,
The entry hole is characterized in that for the smooth entry of the collecting needles, the diameter of the opening is large and the diameter meeting the needle body is narrow.
The sealing cap is made of a synthetic resin material having a flexible nature, and is arranged to close the end surface of the body, and a closing member through which the entry and exit holes of the collection needle enter and exit through the center;
A shielding member made of a flexible synthetic resin material and having a cross-shaped slit formed in the center to shield the entrance and exit holes in a state closely arranged on the inner surface of the finishing member, and to allow the collecting needles to pass through when the collecting needles interfere. is composed of
The closing member is formed with a closing portion covering the end surface of the body, and an edge portion extending from the edge of the closing portion and surrounding the circumferential surface of the body,
An assembly groove into which the edge portion of the shielding member is inserted is directed inward on the inner surface of the edge portion of the edge portion where the finishing portion and the edge portion meet,
The shielding member, a bent portion that can be in close contact with the inner surface of the entry hole is bent from the periphery around the slit to protrude in one direction,
An arc-shaped portion convex in the opposite direction of the bent portion is formed on the inside of the bent portion,
When the bent portion is in close contact with the inner surface of the entry hole, it shows an action of shape deformation that swells inward, and thus the arc-shaped portion continues the action of shape deformation to be compressed into the access hole, so that the collection needle of the biopsy gun moves in and out. A guiding needle for biopsy, characterized in that the opening of the slit is prevented even if the ball enters and exits repeatedly. delete delete delete

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