KR101633589B1 - biopsy device - Google Patents

Abstract

The present invention relates to a biopsy device comprising: a body disposed to enable an operator to grip by his/her hand; an outer needle connected with one side of the body to extend in a length direction, and having a hollow part formed therein; at least one partition installed to extend in a length direction and to be spaced a particular interval apart from the outer needle in the outer needle so as to form a space along a length direction of the outer needle; and a cutter including a cutting unit disposed in a space between the outer needle and the partition and extending in a length direction, a fixing unit connected with one side of the cutting unit and fixed to one side of the outer needle, and a pressing unit formed in the other side of the cutting unit. The partition has a cutting hole formed therein to have a particular length, and the pressing unit of the cutter is made to forwardly moved, so a particular part of the cutter is made to enter the cutting hole. Accordingly, tissue fed in the outer needle is cut and extracted.

Description

Biopsy device

The present invention relates to a biopsy device, and more particularly, to a biopsy device for collecting a tissue sample such as a tissue inside a bone or a mass of a subcutaneous tissue.

In general, when a tumor or nodule develops in a patient's body, histological examination is necessary to determine the malignancy quickly and determine the treatment policy. Especially, it is a very useful method to minimize the burden of the patient by collecting the tissue by minimally invasive method using the micro needle.

In this connection, a general type of biopsy device (Japanese Patent Registration No. 1994-028663) used for biopsy to collect tissue has been disclosed.

1 to 3 are views showing a biopsy device of the general type described above. Fig. 1 is a side view of the biopsy device, and Figs. 2 and 3 are operational state diagrams showing an operation state of the biopsy device shown in Fig.

1 to 3, a biopsy device (Japanese Patent Registration No. 1992-282145) includes a needle 11 and a cryopto 12 penetrating the tissue and a firing mechanism 20 for firing the cry 12, .

A tip end tip 13 is formed at the tip of the needle 11 and a tissue sampling groove 14 is formed at a position spaced apart from the tip tip 13 by a predetermined distance.

The call 12 is configured to be able to move linearly on the outer periphery of the incision 11 and has a hollow therein so that the incision 11 can be inserted. A cutting edge for cutting the tissue is formed at the tip of the call 12 and the call 12 is fired in the longitudinal direction of the tip tip 13 by the action of the launch mechanism 20. [

The operation of the biopsy device will be described with reference to FIGS. 2 and 3. First, the launch device 20 is operated so that the incision 11 is fired first. As a result, the needle 11 is inserted into the tissue through the tissue. In this state, the firing mechanism 20 is operated again so that the call 12 is advanced to cover the tissue sampling groove 14, and the cutting edge at the tip of the call 12 cuts the tissue. The cut tissue is taken between the tissue retrieval groove 14 and the external cry 12 and the biopsy device is retracted from the tissue to remove the crys- tle 11 and the cry 12 from the tissue, And retracted to retract the tissue from the tissue sampling groove 14.

However, in the conventional biopsy device having the above-described structure, the tissue sampling groove is used to discriminate the tumor by collecting relatively soft tissues such as lymph nodes, soft tissues, muscles, thyroid gland or breast, It is difficult to collect the tissue.

Therefore, a biopsy device (U.S. Patent No. 5526821) as shown in Fig. 4 was used to collect a hard tissue such as a bone tissue of bone marrow or cancellous bone.

The biopsy device of FIG. 4 comprises a crown 12 extending in the longitudinal direction and having a hollow formed therein. The tip of the claw 12 includes a tip 13 formed with a pointed portion capable of cutting tissue, And a stylet 19 (probe) capable of penetrating the probe.

More specifically, referring to FIG. 5, an operation mechanism for collecting the tissue using the biopsy device shown in FIG. 4 will be described. The biopsy device is inserted into the hollow of the cervix 12, Squeeze and slowly move forward. Thereafter, when the tip tip 13 of the call 12 reaches the tissue 1 to be harvested, the user removes the stalact 19 from the call 12.

The bone tissue 1 inserted into the call 12 can be cut and collected by rotating the knob 17 after the bone tissue 1 is inserted into the hollow of the call 12.

However, the biopsy device of Fig. 4 has a small diameter and it is difficult to collect a desired amount of tissue because there is no device capable of cutting or holding the tissue 1 inserted into the inside of the cryoptoe 12, A difficulty arises in that it is held inside the call 12.

Therefore, when taking a tissue sample such as a bone tissue, a biopsy device capable of easily collecting a tissue sample and holding the collected tissue is needed.

JP 1994-028663 (registration number) US 5526821 (registration number)

The present invention relates to a biopsy device, and is intended to provide a biopsy device capable of easily collecting a tissue sample and safely holding the collected tissue.

The present invention relates to a body for a practitioner to be held by hand; A cigarette connected to one side of the body and extending in the longitudinal direction and having a hollow part therein; At least one partition wall extending in the longitudinal direction and spaced apart from the cowl at a predetermined interval inside the cow so that a space is formed along the longitudinal direction of the cow; And a cutter disposed in the space between the crys and the partition and extending in the longitudinal direction, a fixing part connected to one side of the cutting part and fixed to one side of the cry, and a pressing part formed on the other side of the cutting part. Wherein the partition wall is formed with a cutting hole having a predetermined length and the pressing portion of the cutter is advanced so that a predetermined portion of the cutter enters the cutting hole and cuts the tissue injected into the claw, A biopsy device is provided.

The biopsy device according to the present invention can advance the pushing portion of the cutter located between the call and the partition wall to allow the predetermined portion of the cutter to enter the cutting hole formed in the partition wall to easily collect the tissue.

Further, the present invention has the effect of collecting the tissue and safely holding the collected tissue in the biopsy device.

1 to 3 are views showing a conventional biopsy device.
4 is a view showing a conventional biopsy device for collecting a bone tissue.
5 is a view showing an operation mechanism of the biopsy device shown in FIG.
6 is a perspective view of a biopsy device according to an embodiment of the present invention.
7 is a cross-sectional view of a biopsy device according to an embodiment of the present invention.
8 is a cross-sectional view of a biopsy device according to an embodiment of the present invention.
9 is a sectional view of a biopsy device according to another embodiment of the present invention.
10 is a perspective view of a biopsy device according to an embodiment of the present invention.
11 is a view showing the operation mechanism of the pusher of the biopsy device according to the embodiment of the present invention (after (A) before the operation of the pusher and (B) after the operation of the pusher).
12 is a view showing a pusher according to another embodiment of the present invention.
13 is a view showing a pusher according to another embodiment of the present invention.
14 is a perspective view of a biopsy device including a probe according to an embodiment of the present invention.
15 is a view showing an operation mechanism of a biopsy device according to an embodiment of the present invention.

The present invention relates to a biopsy device for collecting a tissue sample such as a tissue inside a bone or a mass of a subcutaneous tissue.

Particularly, the present invention can take relatively hard bone tissue such as bone marrow or cancellous bone.

More particularly, the biopsy device of the present invention includes a body provided by a practitioner so as to be held by a hand; A cigarette connected to one side of the body and extending in the longitudinal direction and having a hollow part therein; At least one partition wall extending in the longitudinal direction and spaced apart from the cowl at a predetermined interval inside the cow so that a space is formed along the longitudinal direction of the cow; A cutting part extending in the longitudinal direction and located in the space between the crys and the partition, a fixing part connected to one side of the cutting part and fixed to one side of the crying part, and a pressing part connected to the other side of the cutting part, Wherein the partition wall is formed with a cutting hole having a predetermined length and the pressing portion of the cutter is advanced so that a predetermined portion of the cutter enters the cutting hole and cuts the tissue injected into the claw, .

At this time, the call may include a pusher for advancing the pressing portion formed on the other side of the call.

As a specific aspect, a pair of hinge pieces formed on the other side of the cradle and projected to make a predetermined angle with the cradle; And a hinge pin connecting the pair of hinge pieces and coupled to the pusher, wherein the pusher is opposed to the pressing portion so as to be in contact with each other, wherein the pusher is rotated about an axis of the hinge pin by an external pressure .

Meanwhile, the pusher may be formed with a seating groove so that the pressing portion can be seated on the facing portion where the pressing portion is contacted.

In another embodiment, the pusher has a worm gear formed on an outer circumferential surface thereof, and the pressing portion may be formed with a worm meshing with the worm gear.

In another embodiment, the pusher is coupled to rotate by a fixed shaft, and includes a connecting portion connecting the pusher and the pressing portion, and the connecting portion may be eccentrically connected with the pusher.

In addition, the cue of the present invention may include a pointed portion at the tip, and a guide groove may be formed on the other side so that the pressing portion can be advanced.

In particular, the cutter may be made of a flexible material.

In addition, the body of the present invention may include a probe which is formed with a hole communicating with the hollow portion and penetrates the inside of the call through the hole.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

FIG. 6 is a perspective view of a biopsy device according to an embodiment of the present invention, FIG. 7 is a cross-sectional view of a biopsy device according to an embodiment of the present invention, FIG. 8 is a sectional view of a biopsy device according to an embodiment of the present invention, FIG. 10 is a perspective view of a biopsy device according to an embodiment of the present invention, and FIG. 11 is a view showing an operation mechanism of a pusher of a biopsy device according to an embodiment of the present invention. 12 shows a pusher according to another embodiment of the present invention, and Fig. 13 shows a pusher according to yet another embodiment of the present invention. Fig. FIG. 14 is a perspective view of a biopsy device including a probe according to an embodiment of the present invention, and FIG. 15 is a view illustrating an operation mechanism of a biopsy device according to an embodiment of the present invention.

Hereinafter, the biopsy device of the present invention will be described in detail with reference to FIGS. 6 to 15 and Examples.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biopsy device used for collecting tissue during biopsy, and more particularly, to a biopsy device for collecting tissue samples such as a tissue inside a bone or a mass of a subcutaneous tissue.

Particularly, the present invention can take relatively hard bone tissue such as bone marrow or cancellous bone.

Here, the bone marrow is a soft organic tissue in the lumen of the bone, and refers to a tissue that produces and supplies blood cells such as red blood cells, white blood cells, and platelets.

The cancellous bone is the bony bone in the middle of the bone, which is a bone that is tangentially entangled unlike the cortex. The bone in the space is formed by bone marrow and the outer part is formed by dense cortical bone.

6, the biopsy device 100 according to the present invention includes a body 110 provided to be held by a practitioner by hand, a hollow portion 130 formed to be connected to one side of the body 110, At least one partition wall 140 included in the hollow portion 130 of the call 120 and a cutter 150 capable of cutting the tissue 1 injected into the call 120, .

More specifically, the biopsy device 100 according to the present invention has a pointed portion 121 at its distal end at an intermediate position of a body 110 provided for a practitioner to be held by a hand, and a hollow portion 130 is formed inside And a tubular call 120 is connected.

The shape of the pointed portion 121 may be a shape formed to have a slope on one side of the tip of the call 120 or a shape formed to have a slope on both sides or a shape to form slopes in three directions and four directions .

For example, stainless steel, aluminum, titanium, nitinol, plastics, or the like may be used as the cullet 120. The cullet 120 may be made of a metal that is harmless to the human body. And at least one material selected from the group.

7, the barrier 140 of the present invention is formed to extend in the longitudinal direction of the call 120 and is spaced apart from the call 120 by a predetermined distance, The first hollow portion 131 and the second hollow portion 132 can be separated from the hollow portion 130 by the first hollow portion 130 and the second hollow portion 132, respectively.

In the present invention, the first hollow portion 131 may be a space in which the cutter 150 is positioned, and the second hollow portion 132 may be a space in which the tissue 1 is injected.

The partition 140 is formed with a cutting hole 141 having a predetermined length and the cutting hole 141 may be formed on the rear side of the pointed portion 121 formed on the cry 120. The cutting hole 141 is a space for cutting the bone tissue 1 injected into the hollow portion 130 of the call 120 into a space into which the bent portion 152 of the cutter 150 is inserted, Lt; / RTI >

The cutter 150 of the present invention includes a cutting portion 151 located in a space between the cry 120 and the partition wall 140 and extending in the longitudinal direction and connected to one side of the cutting portion 151 A fixing part 153 fixed to one side of the cry 120 and a pressing part 154 formed on the other side of the cutting part 150.

8, the bent portion 152 of the cutter 150 enters the cutting hole 141 of the biopsy device 100 according to the present invention to cut the tissue 1, The bending portion 152 of the cutter 150 enters the hollow portion 130 of the caller 120 through the cutting hole 141 when the cutter 150 advances and the hollow portion 130 of the caller 120 The bone tissue 1 injected into the bone tissue 1 can be cut.

The bent portion 152 of the cutter 150 enters the cutting hole 141 when the cutter is advanced and can maintain the state of being in close contact with the surface of the barrier 140 of the call 120 when the cutter 150 is moved backward.

More specifically, the present invention is characterized in that the bent portion 152 is formed by advancing the pressing portion 154 of the cutter 150 to bend a predetermined portion of the cutter 150, Cutting the tissue (1) injected into the call (120) while entering the cutter (141).

That is, in the biopsy device 100 of the present invention, the cutting tip of the cutter 150 enters the hollow portion 130 to cut and collect the tissue 1 injected into the call 120, A predetermined portion of the cutter 150 is formed as a bent portion 152 and the bent portion 152 presses the tissue 1 so that the crys- 120 can be easily cut and collected.

Meanwhile, the cutter 150 is preferably formed of a metal material harmless to the human body, and may be formed of a flexible material.

On the other hand, when the flexible material is not made of a flexible material, the bent portion 152 may be easily bent at a predetermined portion so as to easily enter the cutting hole 141. In addition, the cutter of the present invention can be formed in various shapes and is not limited to any shape as long as it is a shape for cutting tissue.

As a specific aspect, the material of the cutter of the present invention may be made of at least one material selected from the group of stainless steel, aluminum, titanium, nitinol, and plastics .

Referring to FIG. 9, the cutter 150 of the present invention may be formed as a plurality of cutters. As an example, the cutter 150 may include two. In this case, the barrier ribs 140 may also include two barrier ribs 140 facing each other in opposite directions, and the bent portions 152 of the cutter 150 located in the barrier ribs 140 The tissue 1 enters the hollow portion 130 of the call 120 through the cutting hole 141 to cut and collect the tissue 1 and retain the collected tissue 1. [

The cutter 150 can easily cut and collect the relatively hard bone tissue 1 such as bone marrow or cancellous bone by the biopsy tissue 1 of the present invention.

The cutter 150 is advanced by pushing the pushing part 154 so that the cutter 150 is bent and the pushing part 154 can be advanced by the operation of the pusher 160. A more detailed description will be given later.

10, the present invention may further include a pusher 160. The pusher 160 is included in the other side of the call 120 of the present invention, and the pushing portion 154 of the cutter 150, So that the cutter 150 can be advanced.

11, a biopsy device 100 according to the present invention includes a pair of hinge pieces 161 protruded on the other side of a call 120 so as to be perpendicular to the longitudinal direction of the call 120, And a pusher 160 including a hinge pin 162 connecting the hinge piece 161 and coupled to the hinge pin 162 and rotating.

11 (A), the pusher 160 and the pressing portion 154 of the cutter 150 are opposed to each other, 11 (B), after the pusher 160 is moved by the external pressure, the hinge pin 162 is brought into contact with the hinge pin 162. As shown in FIG. 11 (B) As shown in Fig.

At this time, the pusher 160 is pivoted about the axis of the hinge pin 162, so that the pusher 154 of the cutter 150 can be pressed to advance the cutter 150.

The guide groove 122 may be formed at the other side of the call 120 so that the pressing portion 154 of the cutter 150 can advance. And may be located on the same line as the cutting hole 141. [ The guide groove 122 guides the pushing portion 154 to advance in a desired direction and restricts movement of the pushing portion 154 over an excessive length.

In addition, a seating groove 163 may be formed in the pusher 160 so that the pressing portion 154 can be seated on the facing portion where the pressing portion 154 is in contact with the seating groove 163, And may be formed in a shape similar to the cross section of the pressing portion 154.

12 illustrates another embodiment of the pusher 160 of the present invention. Referring to FIG. 12, the pusher 160 of the present invention may be formed in the form of a worm gear.

More specifically, as described above, the hinge piece 161 and the hinge pin 162 are formed on the other side of the call 120, and the pusher 160 of the present invention is disposed at the center of the hinge pin 162 So as to be pivotable.

At this time, the pusher 160 may be formed in a disk shape, and a worm gear may be formed on an outer circumferential surface of the pusher 160.

In addition, the pressing portion 154, which is in contact with the pusher 160, is formed with a worm engaged with the worm gear. That is, when the disk-shaped pusher 160 is rotated about the hinge pin 162, the worm of the pressing portion 154 engaged with the worm gear of the pusher 160 rotates, You can advance.

13, there is shown another embodiment of the pusher 160 of the present invention. Referring to FIG. 13, in another embodiment of the present invention, the pusher 160 of the present invention is coupled to rotate by a fixed shaft And a connecting portion 165 connecting the pusher 160 and the pressing portion 154. The connecting portion 165 may be eccentrically connected to the pusher 160. [

In this case, the cutter 150 can be easily advanced and retracted by the rotation of the pusher 160.

14, the body 110 of the biopsy device 100 according to the present invention may have a hole 111 communicating with the hollow portion 130 of the call 120, And a stylet 170 penetrating through the inside of the call 120 through the cable.

The probe 170 may be sharp and sharp to facilitate insertion into the vertebrae of the vertebrae 170. The probe 170 may extend in the longitudinal direction and may include a tip formed at the distal end and a hub formed at the distal end .

The diameter of the probe 170 is preferably smaller than the inner diameter of the call 120 so that the probe 170 can easily penetrate the inside of the call 120.

On the other hand, a hub is provided at the end of the probe 170 and can be used for manipulation of the probe 170.

A process of collecting cancellous bone using the biopsy device 100 to which the technique of the present invention is applied will be described as follows.

15, a practitioner holds the body 110 of the biopsy device 100 of the present invention and cuts the back of the subject so that the subcutaneous tissue 1 The biopsy device 100 is inserted into the vertebra bone (Figs. 15A and 15B). More specifically, the probe 170 is inserted into the inside of the vertebra with the probe 120 engaged.

After separating the probe 170 of the inserted biopsy device 100 of the present invention from the call 120, the biopsy device 100 is moved forward so that the acute portion 121 of the call 120 enters the cancellous bone (Fig. 15 (C)). At this time, the cancellous bone is injected into the hollow part 130 of the call 120.

After the tissue 1 is injected into the hollow portion 130 of the call 120, the cutter 150 is advanced to cut the tissue 1 inserted into the hollow portion 130, (Fig. 15 (D)).

After cutting of the tissue 1 inserted into the hollow portion 130 of the call 120 is completed, the biopsy device 100 is deviated from the vertebra bone and the probe 170 that has been separated is moved forward to the hollow portion 130 It is possible to push and pull out the tissue 1 located thereon and perform inspection or the like.

When the call 120 is inserted into the cancellous bone tissue, the cutter 150 is positioned between the call 120 and the barrier 140 and the cancellous bone is inserted into the hollow 130 of the can 120 The pusher 160 is operated to press the pressing portion 154 of the cutter 150. [

More specifically, the practitioner actuates the pusher 160, which rotates about the axis of the hinge pin 162 connected to the hinge piece 161 and is in contact with the pusher 160, The pressing portion 154 of the cutter 150 can be pressed.

A predetermined portion of the cutter 150 is bent by the elasticity of the cutter 150 to form a bent portion 152. The bent portion 152 is advanced to the cutting hole 141, The cancellous bone located in the hollow portion 130 of the cannula 120 is cut.

The separated probe 170 is passed through the hollow portion 130 of the call 120 and the cancellous bone located in the hollow portion 130 of the call 120 is pushed out.

The biopsy device 100 according to the present invention advances the cutter 150 positioned between the call 120 and the partition wall 140 so that a predetermined portion of the cutter 150 is bent to be formed on the partition wall 140 The tissue 1 injected into the call 120 can be collected by entering the cutting hole 141 and the collected tissue 1 can be safely kept in the biopsy device 100. [

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

1: Organization
11: Sewing 12: Call
13: tip tip 14: sampling groove
17: Handle
19: Stylet 20: Launcher
100: Biopsy device
110: body 111: hole
120: call 121:
122: Guide groove
130: hollow part 131: first hollow part
132: second hollow portion
140: partition wall 141: cutting hole
150: cutter 151: cutting portion
152: bending section 153:
154:
160: pusher 161: hinge piece
162: hinge pin 163: seat groove
165: Connection
170: probe

Claims (10)

A body adapted to be held by a practitioner by hand;
A cigarette connected to one side of the body and extending in the longitudinal direction and having a first hollow portion and a second hollow portion formed therein;
At least one partition wall disposed inside the cow so as to separate the first hollow portion and the second hollow portion along the longitudinal direction of the cry; And
And a cutter disposed at the first hollow portion and extending in a longitudinal direction, a cutter having a fixing portion where a tip of the cutting portion is fixed to one side of the cry, and a pressing portion formed at the other side of the cutting portion,
Wherein the partition wall is formed with a cutting hole having a predetermined length and the pressing portion of the cutter is advanced so that a predetermined portion of the cutter is bent to cut the tissue to be injected into the second hollow portion while entering the cutting hole, Biopsy device.
The method of claim 1, wherein
The call
And a pusher for advancing the pressing portion.
3. The method of claim 2,
A pair of hinge pieces formed on the other side of the claw and protruded to form a predetermined angle with the claw; And
And a hinge pin connecting the pair of hinge pieces to which the pusher is coupled,
Wherein the pusher is opposed to the pushing portion so as to be in contact with each other, and the pusher is rotated about an axis of the hinge pin by external pressure.
3. The method of claim 2,
The pusher
Wherein a seating groove is formed in the facing portion where the pressing portion is in contact with the pressing portion.
The method of claim 3,
The pusher
Wherein a worm gear is formed on an outer circumferential surface of the worm gear, and the worm is engaged with the worm gear. 3. The method of claim 2,
The pusher
Is coupled to rotate by a fixed shaft,
And a connecting portion connecting the pusher and the pressing portion,
And the connecting portion is eccentrically connected with the pusher.
The method according to claim 1,
The call
And a pointed portion at the tip thereof.
The method according to claim 1,
The call
Wherein a guide groove is formed to allow the pressing portion to advance.
The method according to claim 1,
The cutter
Wherein the biopsy device is made of a flexible material.
The method according to claim 1,
The body
A hole communicating with the second hollow portion is formed,
And a probe penetrating the inside of the call through the hole.

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