KR20180099376A - Biopsy device - Google Patents

Abstract

The present invention relates to a biopsy device capable of collecting tissue samples form tissues of various sites including a subepithelial tissue of a visceral organ by a simple structure more quickly, safely and accurately, by comprising: a biopsy drill having a tissue sample receiver into which a portion of the cut tissue is introduced; a main handle moving or rotating by operation of an operator; and a wire having both ends connected to the main handle and the biopsy drill separately to transmit a movement force or a rotational force of the main handle to the biopsy drill.

Description

{BIOPSY DEVICE}

An embodiment of the present invention relates to a bi-optic device used to collect a portion of tissue for biopsy.

Currently, various types of biopsy devices are used to collect tissue samples from human or animal tissues for histopathologic examination and the like.

Korean Patent Laid-Open Publication No. 10-2014-0103680 discloses a bi-optic device of a kind including a probe and a cutting cannula. The probe is formed in the shape of a needle. A sample notch for accommodating the collected tissue sample is provided on the outer periphery of the distal end of the probe. The cutting cannula has a lumen. A probe is inserted into the lumen. The sample notch is exposed to the outside when the probe protrudes forward from the lumen and is hidden by the cutting cannula when the probe is received in the lumen.

In such a bi-optic device, when the first button is pressed, the probe is advanced to the outside to expose the sample notch, and in the state in which the tissues to be collected are introduced into the exposed sample notch, second button pushes the cutting cannula forward and is rotated to cut the tissue so that the tissue sample is received in the sample notch and the probe is received in the lumen and the sample notch is concealed with the collected tissue sample.

A bipyoptic device of the type including a needle-shaped probe as described above can be generally used to easily collect a tissue sample from a site accessible or easily accessible from the epidermis (for example, a breast, etc.) Access to the internal parts of the visceral organs for tissue sampling is in itself impossible or difficult and dangerous.

Korean Patent Registration No. 10-1385942 discloses a type of surgical instrument comprising a forceps for collecting a tissue sample, a wire connected to the forceps, and a handle for operating the forceps through a wire according to the operation of the operator A bismuth device is disclosed.

Such a bi-optic device is configured such that an open operation in which a forceps is opened and a closed operation in a closed state are possible, so that a tissue sample can be collected from a tissue by opening and unfolding the forceps by operating the handle.

A bi-optic device of the type including a forceps can approach the internal part of the internal organ through the biopsy channel of the medical endoscope. However, due to the structural characteristics of the forceps, It is difficult and difficult to accurately and safely infiltrate the subepithelial tissue under the epithelium so as to accurately obtain a sufficient amount of the subcutaneous tissue sample required for examination and diagnosis from the site to be sampled.

On the other hand, all kinds of bi-optic devices including a needle-shaped probe and a bi-optic device including a forceps are structurally complicated, so that manufacturing is very difficult and defective operation easily occurs.

Korean Patent Publication No. 10-2014-0103680 (2014.08.27.) Korean Registered Patent No. 10-1385942 (Apr. 26, 2014)

It is an object of the present invention to provide a bi-optic device which is advantageous in terms of improvement of usability.

It is an object of the present invention to provide a bi-optic device which is more advantageous in terms of improving the efficiency of sampling tissue samples.

It is an object of the present invention to provide a bi-optic device which is more advantageous in terms of improvement of manufacturing efficiency and reduction of failure rate in use.

The problems to be solved are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a drill body having a drill body to be introduced into a tissue to be sampled, and a tissue sample receiving part of the drill body, a biopsy drill provided with a receiver; A main handle which is moved or rotated by operation of the operator; A proximal end portion and a distal end portion are respectively coupled to the main handle and the biff drill to transmit a movement force or a rotational force of the main handle to the biff drill, , A biopsy device may be provided.

The tissue sample receiving portion may be formed on the outer periphery of the drill body from a tip end of the drill body and formed in a spiral shape along the longitudinal direction of the drill body.

The bi-optic device according to the embodiment of the present invention may further include a sub handle. Wherein the main handle is rotatably coupled to the sub handle at the proximal end side of the sub handle by a coupling means so as to be rotatable about an axis in the longitudinal direction of the sub handle, Through hole may be provided.

The bi-optic device according to an embodiment of the present invention may further include a guide tube having a proximal end portion coupled to the through hole at a distal end portion of the sub-handle. The wire that has passed through the through hole is inserted into the guide tube, and the guide tube may be formed to have a length protruding from the distal end of the biff drill.

Wherein the engaging means comprises: a male engaging portion provided on one of the main handle and the sub handle; And an arm coupling portion provided on the other of the main handle and the sub handle. The bi-axial drill includes a male screw hole, which is formed in the female screw hole so as to be screwed with the male screw member of the male engaging portion, when the main handle rotates, And may be accommodated in the distal end side of the guide tube or protrude from the distal end of the guide tube according to a direction in which the guide tube is moved by the member and the female screw hole.

Wherein the male engaging member comprises: a male screw member constituting a distal end portion of the main handle; And a connecting rod extending from a proximal end of the male screw member to a proximal end of the main handle. Wherein the female engaging portion includes: the female screw hole provided inside the proximal end side of the sub handle; And a receiving hole extending from the distal end of the female screw hole toward the distal end of the sub handle to communicate with the through hole. Wherein the connection rod is smaller in cross section than the female screw hole so that the connecting rod can pass through the female screw hole and the receiving hole is larger in length and cross section than the male screw member so as to accommodate the male screw member having passed through the female screw hole have.

Means for solving the problems will be more specifically and clarified through the embodiments, drawings, and the like described below. In addition, various solution means other than the above-mentioned solution means may be further proposed.

According to the embodiments of the present invention, tissue samples can be collected from tissues of various regions including the subcutaneous tissue of the visceral organs more quickly, safely and accurately.

Further, according to the embodiment of the present invention, it is possible to easily manufacture with less cost, and the incidence of malfunctioning can be remarkably lowered.

FIG. 1 and FIG. 2 are perspective views showing a state in which the bi-optic device according to the embodiment of the present invention is viewed from different directions.
3 is a cross-sectional view illustrating a bismuth device according to an embodiment of the present invention.
Figs. 4 and 5 are a perspective view and a cross-sectional view showing a portion A of Fig.
Fig. 6 is a sectional view showing part B of Fig. 3;
FIG. 7 is a cross-sectional view illustrating the operation of the bi-optic device according to the embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For a better understanding of the invention, it is to be understood that the size of elements and the thickness of lines may be exaggerated for clarity of understanding. Further, the terms used to describe the embodiments of the present invention are mainly defined in consideration of the functions of the present invention, and thus may be changed depending on the intentions and customs of the user and the operator. Therefore, the terminology should be interpreted based on the contents of the present specification throughout.

The bi-optic device according to the embodiment of the present invention is capable of collecting tissue samples for biopsy from various parts (lesions) of a human or an animal, Lt; RTI ID = 0.0 > a < / RTI >

In the description related to the embodiment of the present invention, the proximal end portion and the distal end portion are terms referring to the practitioner, the end portion located at the operator side is the proximal end portion, do.

The configuration and operation of the bi-optic device according to the embodiment of the present invention are shown in Figs.

1 to 3, 5, and 6, a bi-optic device (hereinafter referred to as a " device ") according to an embodiment of the present invention enters a tissue to be sampled, A proximal portion 300A is coupled to the distal end portion 200B of the main handle 200 and a biopsy drill 100 is attached to the main handle 200, And a flexible wire 300 coupled to the proximal end portion 100A of the drill 100 and coupled to the distal end portion 300B to interlock the biaxial drill 100 with the main handle 200. [

1 to 3, the proximal end portion of the device viewed from the distal end portion of the device (corresponding to the distal end portion 100B of the biopsy drill 100) (the distal end portion 200A of the main handle 200) The biaxial drill 100, the wire 300, and the main handle 200 are disposed in sequence. During the tissue harvesting, the main handle 200 operated by the practitioner is located outside the body, and the wire 300, which is bent by the flexibility and restored to the original shape (which may be linear) Is formed to have a length sufficient to hold the main handle 200 out of the body, even when approaching or entering the tissue located deep within the body, such as the stomach, large intestine, or the like.

Since the biaxial drill 100 and the main handle 200 disposed on both sides of the longitudinal direction are connected to each other by the wire 300, when the operator grasps and moves the main handle 200, (100) move together. For example, when the main handle 200 is moved, the biaxial drills 100 are moved in the same direction. When the main handle 200 is rotated, the biaxial drills 100 are rotated in the same direction together.

The bismuth drill 100 may be made of, for example, a medical metal. The flexible wire 300 may be made of, for example, a medical metal.

The bismuth drill 100 and the wire 300 can be firmly coupled by various methods. For example, the grooves are formed at a predetermined depth in the proximal end portion 100A of the biaxial drill 100 and the distal end portion 300B of the wire 300 is inserted into the groove of the proximal end portion 100A of the biaxial drill 100 A bonding method of adhering with a bonding agent or the like may be used. In this case, in order to prevent the distal end portion 300B of the wire 300 from being loosened in the groove of the proximal end portion 100A of the biaxial drill 100, And the distal end portion 300B of the wire 300 may be formed in a polygonal (rectangular or the like) shape in which the cross sections thereof correspond to each other. As another example, a joining method in which the proximal end portion 100A of the bismuth drill 100 and the distal end portion 300B of the wire 300 are joined by welding or the like can be used.

The main handle 200 may be made of synthetic resin, for example. The combination of the main handle 200 and the wire 300 can be done in a variety of ways. For example, the groove may be formed at a predetermined depth in the distal end portion 200B of the main handle 200 and the proximal end portion 300A of the wire 300 may be inserted into the groove of the distal end portion 200B of the main handle 200 A method of adhering with an adhesive or the like may be used. The proximal end 300A of the wire 300 is prevented from being loosened in the groove of the distal end portion 200B of the main handle 200. In this case, And the proximal end portion 300A of the wire 300 may be formed in a polygonal (rectangular or the like) shape in which the cross-sectional surfaces thereof correspond to each other.

Referring to FIGS. 4 and 5, the biaxial drill 100 includes a drill body 110 having a cutting edge 112. The drill body 110 has a tissue sample receiving portion 114 into which a portion (tissue sample) of the tissue cut by the cutting edge 112 is introduced during rotation of the biaxial drill 100.

The tissue sample receiving portion 114 is formed by a long groove provided on the outer periphery of the drill body 110. The groove constituting the tissue sample accommodating portion 114 is guided from the distal end portion of the drill body 110 corresponding to the distal end portion 100B of the biaxial drill 100 to the proximal end portion 100A of the biaxial drill 100 110 in the longitudinal direction. These helical grooves may be formed in plural, and the tissue sample receiving portion 114 may be formed of a plurality of helical grooves.

The drill body 110 has a land 116 that is a flat circumferential portion between tissue sample receiving portions 114 that are helical structures. The cutting edge 112 may be formed at the tip of the drill body 110 or at the edge of the land 116. It is preferable that the cutting edge 112 is formed at both the tip of the drill body 110 and the edge of the land 116 in consideration of the tissue sampling efficiency through cutting. When the cutting edge 112 is formed at the tip of the drill body 110 and the edge of the land 116, the tissue to be introduced into the tissue sample accommodating portion 114 can be cut more smoothly and smoothly.

According to the bismoss drill 100 as described above, at the time of tissue collection, a part of the tissue cut by the cutting edge 112 extends from the tip of the drill body 110 in a spiral shape along the longitudinal direction of the drill body 110 And is accommodated in the tissue sample accommodating portion 114 while being introduced into the tissue sample accommodating portion 114. This is because the helical tissue sample accommodating portion 114, which is capable of taking a tissue sample by a simple structure and a simple operation procedure using the principle of twist drill, and having a long length in a narrow area, Thereby obtaining a sufficient amount of the tissue sample.

The device further includes a sub handle (400) and a flexible guide tube (500). For reference, the flexible guide tube 500 may be made of medical synthetic resin, for example.

The main handle 200 is disposed on the proximal end portion 400A of the sub handle 400 and the handle engaging means 250 and 450 are attached to the sub handle 400. As shown in Figures 2, 3 and 6, Is rotatable around an axis CL of the device in the longitudinal direction and is linearly movable in the direction of the axis CL.

The proximal end 300A of the wire 300 is coupled to the center of the distal end 200B of the main handle 200 and the distal end 300A of the wire 300 is coupled to the distal end 400B of the sub- A through hole 402 through which the light emitting device 300 is passed is provided.

The guide tube 500 has a structure in which both end portions in the longitudinal direction are both open and a lumen 500C as an internal space. The proximal end portion 500A of the guide tube 500 is firmly coupled to the through hole 402 so that the lumen 500C serving as the inner space communicates with the through hole 402 and the wire 300, Is inserted into lumen 500C.

According to the handle coupling means 250 and 450, the main handle 200 is spaced apart from or approach the sub handle 400 in accordance with the moving direction, and is connected to the main handle 200 through the wire 300, (100) is moved in the same direction as the main handle (200). The guide tube 500 is formed to have a length such that the biaxial drill 100 is accommodated in the lumen 500C or protruded from the lumen 500C in accordance with the moving direction of the main handle 200. [

Referring to FIG. 7, the lumen 500C defines a portion of the guide tube 500 closer to the distal end portion 500B, as a drill receiving portion. When the main handle 200 is rotated and moved in a direction away from the sub handles 400, the bismuth drill 100 is moved to the distal end of the lumen 500C, (Corresponding to the distal end 500B of the tube 500), and when the main handle 200 is rotated in the opposite direction and is moved in a direction approaching the sub handle 400, Or protrudes from the drill receiving portion through the opening at the distal end portion 500B of the guide tube 500 as shown in (C).

The handle coupling means 250 and 450 may include a male coupling portion 250 provided at the distal end portion 200B of the main handle 200 and a coupling portion 250 provided at the proximal end 400A of the sub- And an arm coupling part 450 provided at a predetermined depth in the direction toward the distal end part 400B of the sub handle 400. [

6 and 7, the male engaging portion 250 includes a male screw member 252 and a connecting rod 254, and the female engaging portion 450 includes a female screw hole 452 and a receiving hole 454 .

The male screw member 252 formed with the male screw on the outer periphery constitutes the distal end portion 200B of the main handle 200. [ The connection rod 254 extends from the proximal end of the male screw member 252 in the direction of the axis CL toward the proximal end 200A of the main handle 200. [

The sub handle 400 is provided with an insertion opening 404 through which the male engaging portion 250 is inserted into the proximal end portion 400A. The female screw hole 452 is formed with a female screw which is engaged with the male screw of the male screw member 252 on the inner periphery. The female screw hole 452 is provided so as to communicate with the insertion opening 404 of the sub handle 400 inside the sub handle 400. The receiving hole 454 extends from the distal end of the female thread hole 452 in the direction of the axis CL in the sub handle 400 toward the distal end 400B of the sub handle 400, And communicates with the through hole 402. That is, both end portions of the receiving hole 454 communicate with the female thread hole 452 and the through hole 402, respectively.

The connecting rod 254 is formed so as to have a smaller cross-sectional area than the inner circumference of the female screw hole 452 so as to pass through the female screw hole 452. The receiving hole 454 is formed to have a longer length than the length of the male screw member 252 and a larger cross section than the circumference of the male screw member 252 so as to accommodate the male screw member 252 passed through the female screw hole 452 .

The bismuth device according to the embodiment of the present invention has a structure in which the bismuth drill 100 is accommodated inside the distal end 500B of the guide tube 500 as shown in FIG. The working channel of the endoscope can be used depending on the position of the tissue to be collected at this time.) The main handle 200 is rotated to move in a direction approaching the sub handle 400 The biaxial drill 100 protrudes through the opening of the guide tube 500 toward the distal end portion 500B as shown in FIG. 7B.

When the main handle 200 is continuously rotated in the same direction, the bismuth drill 100 enters the tissue to be sampled, the tissue is cut by the cutting edge 112 of the bismuth drill 100, Is introduced into the tissue sample accommodating portion 114.

When the main handle 200 is continuously rotated in the same direction and the male screw member 252 is accommodated in the receiving hole 454 as shown in FIG. 7C, the biaxial drill 100 is continuously moved in the direction of entering the tissue It can not be done, but it can be rotated continuously.

When the main handle 200 is continuously rotated while the screw member 252 is accommodated in the receiving hole 454, the biaxial drill 100 is rotated in place and the tissue is completely cut, As shown in FIG.

The main handle 200 is separated from the sub handle 400 and the biaxial drill 100 is guided by the guide tube 500 , And the collected tissue sample is protected by the guide tube 500. The guide tube 500 is provided with a guide tube 500,

The bi-optic device according to the embodiment of the present invention can be collected in a state in which the tissue structure is maintained and in an amount required for the examination for the subcutaneous tissue, and thereby, the subepithelial tumor or the like can be more accurately Inspection and diagnosis.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Further, the technical ideas described in the embodiments of the present invention may be performed independently of each other, or two or more may be implemented in combination with each other.

100: biopsy drill
110: Drill body
112: cutting edge
114: tissue sample receiver
200: main handle
250:
300: wire
400: a sub handle
450: female coupling portion
500: guide tube

Claims (6)

A bismuth drill having a drill body that enters a tissue to be sampled and provided with a tissue sample receiver into which a part of the tissue cut by the rotational movement of the drill body is introduced into the drill body biopsy drill);
A main handle which is moved or rotated by operation of the operator;
A proximal end portion and a distal end portion are respectively coupled to the main handle and the biff drill to transmit a movement force or a rotational force of the main handle to the biff drill, ,
Biopsy device. The method according to claim 1,
Wherein the tissue sample accommodating portion comprises a groove formed on an outer periphery of the drill body from a distal end of the drill body along a longitudinal direction of the drill body,
Bibox device. The method according to claim 1 or 2,
The bi-optic device may further include a sub handle,
The main handle is rotatably coupled to the sub handle at the proximal end side of the sub handle by the coupling means about the longitudinal axis of the sub handle,
Wherein the sub handle has a through hole through which the wire passes in the longitudinal direction of the sub handle,
Bibox device. The method of claim 3,
The bi-optic device may further include a guide tube having a proximal end portion coupled to the through hole at a distal end portion of the sub-handle,
The wire passing through the through hole is inserted into the guide tube,
Wherein the guide tube is formed to have a length protruding from the distal end portion of the bi-
Bibox device. The method of claim 4,
Wherein the engaging means comprises: a male engaging portion provided on one of the main handle and the sub handle; And an arm engagement portion provided on the other of the main handle and the sub handle,
Wherein the male engaging portion includes a male screw member and the female engaging portion includes a female screw hole that is threadedly engaged with the male screw member of the male engaging portion. Accordingly, when the main handle rotates, The guide tube is received in the distal end portion of the guide tube or protruded from the distal end portion of the guide tube according to the direction of movement by the female screw hole
Bibox device. The method of claim 5,
Wherein the male engaging member comprises: a male screw member constituting a distal end portion of the main handle; And a connecting rod extending from a proximal end of the male screw member to a proximal end of the main handle,
Wherein the female engaging portion includes: the female screw hole provided inside the proximal end side of the sub handle; And a receiving hole extending from the distal end of the female screw hole toward the distal end of the sub handle and communicating with the through hole,
Wherein the connecting rod has a cross section smaller than the female screw hole so as to pass through the female screw hole,
Wherein the receiving hole has a length and a transverse section larger than the male screw member so as to accommodate the male screw member having passed through the female screw hole,
Bibox device.

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