KR20130079788A - Biopsy gun device - Google Patents

Abstract

PURPOSE: A biopsy gun device is provided to maintain stiffness for smoothly transferring a force to a needle and to secure flexibility with a coil tube adjacent to the needle, thereby allowing a needle and a cutting tube to accurately penetrating a target position, easily adjusting the working distance of the needle and the cutting tube, and conveniently manipulating the needle and the cutting tube. CONSTITUTION: A biopsy gun device includes a needle part (10), a main body (30), loading units (60,62), and shooting units (80,90). The needle part comprises a needle and a cutting tube. The needle penetrates a tissue for a biopsy, and the cutting tube cuts the tissue extracted by the needle. The needle part is mounted on the main body. The loading units and the shooting units are assembled in the main body so that the needle and the cutting tube are sequentially shot. The device firstly shoots the needle, and secondly shoots the cutting tube.

Description

Biopsy Gun Device

The present invention relates to a biopsy gun device for use in tissue collection in the biopsy, more specifically, fine needle biopsy needle can be operated in a gun method, and the adjustment of the operating distance of the needle and the incision tube, A biopsy gun device in which needles and incision tubes can be sequentially penetrated into tissue at a force and speed for precise targeting.

As is well known, submucosal tissue collection, which is a type of biopsy process, is performed to collect lesion tissue or cells under the submucosal known as submucosal tumor (SMT) and use it for diagnosis of cancer.

Submucosal tumors cannot be harvested by deep biopsy tools used for mucous membranes, so separate incisions such as endoscopic mucosal resection (EMR) or fine needle inhalation (FNA) can be used to extract deep tissues. fine needle aspiration.

However, the extraction of deep tissue by endoscopic mucosal resection is not only time-consuming than the normal biopsy of the mucosa, but also causes discomfort for both the patient and physician by increasing physical discomfort and psychological anxiety of the patient being examined. .

In addition, even in the case of fine needle aspiration, the amount of tissue collected is too small at the level of cells. Therefore, when the pathological diagnosis is performed using the collected sample, the structure of the tissue cannot be known due to the limitation of the number of cells. It has a disadvantage that there are many difficulties.

Therefore, fine needle biopsy (FNB) is performed to collect the tissue to confirm the structure of the tissue. In general, the needle device used in the fine needle biopsy is an arrow-shaped tip, a tube-shaped tissue accommodating part open at one side to secure space of the collected tissue, and an outer tube for dissecting the collected tissue ( cannula).

On the other hand, devices that use forces such as springs to secure penetration for tissue penetration are mostly used in the radiology department because they are applied in devices with short force transmission distances, and when the force transmission distances are long, for example, when using an endoscope, As a method, a method of directly penetrating tissue by force is used.

When using an endoscope, it should be possible to maximize the amount of tissue entering the tissue storage of the needle device when penetrating the tissue, and also to prevent the tissue from being pushed out when cutting the tissue entering the tissue storage, It should be possible to minimize the loss of force transmitted to the biopsy needle device capable of this is disclosed in the following patent literature by the inventors.

(Patent Document 1) Korean Patent Application Publication No. 2011-0062386 (2011.6.10 publication)

(Patent Document 2) US Patent Application Publication No. US2007 / 0185411 (2007.8.09 publication)

However, as described above, permeation resistance can be reduced when penetrating the tissue, and the air resistance can be reduced to maximize the tissue entering the tissue storage, and when the tissue is cut into the tissue storage, the tissue is pushed out of the tissue storage. Even when using a preventable needle device, when using an endoscope with a long force transmission distance, if the operator directly penetrates the tissue by force by hand, the needle of the force of the operator is caused by frictional loss in the endoscope where the tip is bent. There is a problem that can not be delivered to the device is pushed back, or can not penetrate the tissue.

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and an object thereof is to provide a biopsy gun device in which a needle and an incision tube can be sequentially penetrated into a tissue at a force and speed for accurately targeting.

It is another object of the present invention to provide a biopsy gun device that is easy to control and easy to adjust the working distance of the needle and the incision tube.

In order to achieve the above object, the biopsy gun device of the present invention includes a needle portion made up of a needle penetrating the tissue for biopsy, an incision tube for dissecting the tissue collected on the needle, a body on which the needle portion is mounted, and a needle portion. Including the loading means and the shooting means assembled to the main body to shoot the needle and the incision tube sequentially, the first shooting of the needle and the secondary shooting of the incision tube are performed.

The needle part may be connected to a wire at an end of the needle, and an end of the cutting tube may be connected to a coil tube.

The main body is assembled with a hollow housing divided into a first chamber and a second chamber therein, a pair of first and second pistons each sliding in each chamber, and a first to elastically press each of the pistons. And a second spring, a sliding opening portion attached to the rear end of each piston and formed on each side of the chamber, and first and second stopper vanes sliding along the sliding groove formed on the side of the main body.

The needle is connected to the second piston via the first piston and the incision tube is connected to the first piston so that the incision tube is loaded by sliding of the first piston and the needle is loaded by sliding of the second piston. have.

The first and second loading members as loading means are attached to the outer surface of the main body so as to slide each of the pistons in the loading state, each of the loading members has a pair of rotation angle portions having fixed holes whose one end acts as a hinge axis, The cover piece of the other end which can be rotated in close contact with the rotating member, the hinge end of one end coupled to the rotation angle part and the part of the cover piece, and the roller which is slidably inserted in the sliding groove of the main body so that the other end pushes the stopper blade of each piston. It may include a link piece.

The roller can push the stopper blade of each piston by the rotation of a cover piece.

The first and second elastic members as the shooting means are attached to the upper and lower portions of the housing to release the loaded state of the loaded piston so that the needle and the cutting tube are shot so that each of the elastic members covers the upper surface of the housing. It includes an elastic piece that protrudes upward so that the first button is attached to one end, a locking projection protruding downward on the other end, and a fixing protrusion which is downwardly protruded so that the fixing hole of the first loading member is inserted to act as a hinge axis, The member is positioned to correspond to the first elastic member to cover the lower surface of the housing, the elastic piece is projected upward so that the second button is attached to one end, and the fixing hole of the second loading member is inserted into the other end to act as a hinge axis. The locking protrusion is projected downward, the locking projection may be projected downward between the elastic piece and the fixing projection.

Each of the locking projections is composed of one side of the inclined surface and the other side of the vertical surface, when the stopper blade pushes the inclined surface, the elastic member is rotated, respectively, after the rotation is in close contact with the vertical surface by the elasticity of each spring to maintain the loaded state.

The elastic piece of the second elastic member may be exposed through an opening formed in the elastic piece of the first elastic member, and the second button and the first button may be exposed to the upper portion of the main body side by side.

A pair of pressing springs may be installed between the main body and the housing so as to press each of the elastic members downward.

When the second button is pressed, the second elastic member is rotated to release the loaded state, so that the second piston slides and the needle fixed to the second spring is shot to penetrate the tissue to be collected.

When the first button is pressed, the first elastic member is rotated to release the loaded state, so that the first piston is slid and the incision tube fixed to the first spring is shot to cut the tissue stored in the tissue storage of the needle. have.

Biopsy gun device of the present invention may further include a distance adjusting member for adjusting the working distance of the incision tube.

The distance adjusting member is composed of a mounting tube coupled to the main body and an adjustment tube inserted into the mounting tube, and the threaded grooves marked with marks are formed on the adjustment tubes, and screwed to the scale indicating the working distance of the incision tube. The incision tube can be operated for the distance screwed in.

According to the embodiment of the present invention, while maintaining the rigidity to transfer the force well to the needle and at the same time ensure the flexibility by the coil tube adjacent to the needle, it is transmitted exactly to the target position, the working distance of the needle and the incision tube Easy to adjust, easy to operate has the effect.

1 is a perspective view showing a biopsy gun device according to an embodiment of the present invention,
FIG. 2 is a cross-sectional view illustrating the needle part of FIG. 1;
Figure 3 is a detailed view of the upper body removed from the gun biopsy device of Figure 1,
4 is a schematic view showing a housing and a piston assembled in the main body of FIG. 3;
5 is a cross-sectional view taken along line AA of FIG. 3,
6 is a cross-sectional view showing a state where the needle is loaded by the rotation of the second loading member,
7 is a cross-sectional view showing a state in which the incision tube is loaded by the rotation of the first loading member,
FIG. 8 is a partial cross-sectional view of the needle part in which the needle is first taken in the loaded state of FIG. 5;
FIG. 9 is a partial cross-sectional view of the needle part in a state in which the incision tube is secondary shot in the loaded state of FIG. 5;
10 is a cross-sectional view of the shooting is completed,
11 is a schematic diagram illustrating adjustment of the working distance of the incision tube.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements.

Figure 1 shows a biopsy gun device according to a preferred embodiment of the present invention, Figure 2 shows the needle portion of FIG.

As shown in Figures 1 and 2, the biopsy gun device 100 of the present invention is a needle portion 20 is equipped with a needle 10 and the incision tube 12, the tissue reservoir 2 is formed, and The needle part 20 is configured to be mounted on the upper and lower parts so that the sliding groove 31 is formed on the side of the main body 30, and the main body 30 has the needle 10 of the needle part 20 and a tube for cutting ( Loading means and shooting means for shooting 12) sequentially are assembled.

Needle part 20 is made of a cutting tube 12 and the outer tube 14 around the needle 10, the end of the needle 10 is connected to the wire (16) having a predetermined rigidity needle ( Minimize the loss of force transmitted to 10, the end of the incision tube 12, the coil tube 18 is connected to the force is easily transmitted even in the bent end portion.

3 shows a state in which the upper portion of the main body of the biopsy gun apparatus of FIG. 1 is removed, FIG. 4 shows a housing and a piston assembled in the main body, and FIG. 5 shows a cross section taken along the line A-A of FIG.

3 to 5, the hollow housing 36 divided into the first chamber 32 and the second chamber 34 is assembled inside the main body 30, and the chamber of the housing 36 is assembled. A pair of first and second pistons 40 and 42 sliding respectively in the 32 and 34 and the first and second springs 50 to elastically press the pistons 40 and 42 respectively. 52 is assembled.

Each piston 40, 42 is provided with a stopper blade 44, 46 adjacent the rear end thereof, and a sliding opening 38 and a main body formed on each side of the chamber 32, 34 of the housing 36. Sliding along the sliding groove 31 formed on the side of the (30).

Meanwhile, the needle 10 is connected to the second piston 42 through the first piston 40, and the incision tube 12 is connected to the first piston 40 so as to slide the first piston 40. The incision tube 12 is loaded and taken by the needle, and the needle 10 is loaded and taken by the sliding of the second piston 42.

First and second loading members 60 and 62 are attached to the outer surface of the main body 30 to slide the first and second pistons 40 and 42 in the loaded state, respectively.

Referring to FIG. 3, the first and second loading members 60 and 62 each have a pair of rotating angle portions 66 having fixed holes 64 whose one end acts as a hinge axis, and the main body 30. The cover piece 68 of the other end which can be rotated centering around the fixing hole 64, the hinge end 72 of the one end couple | bonded with the rotation angle part 66, and the cover piece 68, and the other end are in close contact, Link piece 76 formed with a roller 74 slidably inserted in the sliding groove 31 of the main body 30 so as to push the stopper blades 44 and 46 of the first and second pistons 40 and 42. ).

When the cover piece 68 is flipped, that is, the cover piece 68 rotates counterclockwise around the fixing hole 64, the link piece 76 rotates clockwise around the hinge end 72, As a result, the roller 74 located on the left side of the stopper vane 44 of the first piston 40 pushes the stopper vane 44 to the right, and similarly the stopper vane 46 of the second piston 42 to the right. Will be pushed.

On the other hand, the upper and lower parts of the housing 36 release the loaded state of the first and second pistons 40 and 42 loaded so that the needle 10 and the cutting tube 12 are shot so that the first and second elastic members are shot. 80 and 90 are attached.

The first elastic member 80 covers the upper surface of the housing 36, the elastic piece 82 is formed to protrude upward so that the first button 120 is attached to one end, the locking projection 86 is projected downward on the other end It is formed so that the fixing projection 88 is inserted into the fixing hole 64 of the first loading member 60 to act as a hinge axis in the middle is formed to protrude downward.

On the other hand, the second elastic member 90 positioned to correspond to the first elastic member 80 covers the lower surface of the housing 36, but the elastic piece 92 protrudes upward so that the second button 140 is attached to one end thereof. And a fixing protrusion 96 into which the fixing hole 64 of the second loading member 62 is inserted so as to function as a hinge axis at the other end thereof. It is formed to be.

Each of the locking projections 86 and 98 is composed of an inclined surface on one side and a vertical surface on the other side, and the first and second elastic members 80 and 90 are slid by the stopper blades 44 and 46 that slide. Is easily rotated, and after the rotation, the first and second springs 50 and 52 are in close contact with the vertical surface by the elasticity to maintain the loaded state.

Since the elastic piece 92 of the second elastic member 90 is exposed through the opening formed in the elastic piece 82 of the first elastic member 80, the second button 140 attached to the elastic piece 92 and The first button 120 attached to the elastic piece 82 is exposed to the upper portion of the main body 30 in parallel with each other.

A pair of pressing springs 70 are installed between the main body 30 and the housing 36 to downwardly press the first and second elastic members 80 and 90.

When the second button 140 is pressed, the second elastic member 90 is rotated about the fixing protrusion 96 to release the loaded state of the stopper blade 46 which is in close contact with the vertical surface of the locking protrusion 98. The two pistons 42 are slid by the elasticity of the second spring 52, and as a result, the needle 10 fixed to the second spring 52 is triggered and transmitted to the tissue to be collected.

Subsequently, when the first button 120 is pressed, the first elastic member 80 is rotated about the fixing protrusion 88 to release the loaded state of the stopper blade 44 that is in close contact with the vertical surface of the locking protrusion 86. As a result, the first piston 40 is slid by the elasticity of the first spring 50, and as a result, the incision tube 12 fixed to the first spring 50 is triggered, so that the tissue storage of the needle 10 ( Incision in the tissue stored in 2).

On the other hand, the biopsy gun device of the present invention can adjust the operating distance of the incision tube 12 by the distance adjusting member 160.

Referring to FIG. 1, the distance adjusting member 160 includes a mounting tube 162 coupled to the main body 30, an adjustment tube 164 telescopically inserted into the mounting tube 162, and an adjustment tube 164. One end thereof is connected to a guide tube 22 that houses the outer tube 14.

As shown in FIG. 10, the adjustment tube 164 of the distance adjusting member 160 is formed with a screw fastening groove 168 marked with a scale 166, and a desired working distance of the internal cutting tube 12. By screwing to the scale 166 indicating that the cutting tube 12 can be adjusted to the operating distance by the screwed distance.

As described above, the biopsy gun device of the present invention has a simple structure in which the loading and shooting of the needle and the incision tube are sequentially performed, and the coil tube adjacent to the needle maintains the rigidity to which the force can be transmitted well. As the flexibility is ensured, it is accurately transmitted to the target position, thereby improving the reliability of tissue collection.

What has been described above is only one preferred embodiment of the biopsy gun device according to the present invention, and the present invention is not limited to the above-described embodiment, and therefore, the subject matter of the present invention as claimed in the following claims. Without departing from the scope of the present invention, any person having ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

2: Number of organizational storage 10: Needle
12: incision tube 14: outer tube
16: wire 18: coiled tube
30: main body 31: sliding groove
32,34: first and second chamber 36: housing
38: sliding opening 40, 42: first and second piston
44,46: stopper wing 50,52: first and second spring
60, 62: first and second loading members 64: fixing holes
66: angle of rotation 68: cover
70: pressure spring 72: hinge end
74: link piece 80,90: first and second elastic members
82,92: elastic piece 86,98: locking projection
88,96: fixing projection 120,140: first and second buttons
160: distance adjusting member 162: mounting tube
164: control tube 166: scale
168 screw tightening groove

Claims (13)

As a biopsy gun device,
A needle portion comprising a needle penetrating the tissue for biopsy and an incision tube for dissecting the tissue collected on the needle;
A main body on which the needle part is mounted;
Including a loading means and a shooting means assembled to the main body to shoot the needle and the incision tube of the needle sequentially,
To perform the first shooting of the needle and the second shooting of the incision tube
Gun device for biopsy.
The method of claim 1,
The needle portion
A wire is connected to an end of the needle, and an end of the incision tube is connected to a coil tube.
Gun device for biopsy.
The method of claim 1,
The main body is assembled with a hollow housing divided into a first chamber and a second chamber therein,
A pair of first and second pistons sliding in the first and second chambers, respectively;
First and second springs for elastically pressing the first and second pistons,
A sliding opening portion formed adjacent to the rear end of each of the pistons and formed on side surfaces of the first and second chambers, and sliding along a sliding groove formed on the side surface of the main body;
The needle is connected to the second piston through the first piston, the incision tube is connected to the first piston, the incision tube is loaded by sliding of the first piston, and the second piston A biopsy gun device in which the needle is loaded by sliding.
3. The method according to claim 1 or 2,
The loading means are first and second loading members attached to an outer surface of the main body so as to slide each of the first and second pistons in a loading state,
The first and second loading members
A pair of rotation angle parts having a fixing hole whose one end acts as a hinge axis, and a cover piece of the other end which can be rotated about the fixing hole in a state in close contact with the main body,
And a link piece having a hinge end of one end coupled to the pivot angle part and the cover piece, and a roller slidably inserted in the sliding groove of the main body so that the other end pushes the stopper blades of the first and second pistons.
Gun device for biopsy.
The method of claim 4, wherein
The roller is pushed by the stopper blades of the respective pistons by the rotation of the lid piece so that the stopper blades are slid and loaded.
Gun device for biopsy.
The method according to claim 1 or 3,
The shooting means
As the first and second elastic members attached to the upper and lower parts of the housing to release the loaded state of the first and the second piston loaded to shoot the needle and the cutting tube,
The first elastic member is
A fixing protrusion covering an upper surface of the housing, the elastic piece projecting upward so that the first button is attached to one end, the locking protrusion projecting downward on the other end, and the projection protrusion downwardly inserted so that the fixing hole of the first loading member is inserted into the hinge shaft. Including,
The second elastic member is positioned to correspond to the first elastic member to cover the lower surface of the housing,
An elastic piece that protrudes upward so that the second button is attached to one end, a fixing protrusion that protrudes downward so that the fixing hole of the second loading member is inserted so as to act as a hinge axis on the other end, and a locking projection is downward between the elastic piece and the fixing protrusion. Protruding
Gun device for biopsy.
The method according to claim 6,
Each of the locking projections is composed of an inclined surface on one side and a vertical surface on the other side, and the stopper blade pushes the inclined surface to rotate the first and second elastic members, respectively, and after the rotation of the first and second springs. It is in close contact with the vertical surface by elasticity to maintain the loaded state
Gun device for biopsy.
The method according to claim 6,
The elastic piece of the second elastic member is exposed through an opening formed in the elastic piece of the first elastic member, and the second button and the first button are exposed to the upper portion of the main body side by side
Gun device for biopsy.
The method according to claim 6,
A pair of pressing springs are installed between the main body and the housing to press down the first and second elastic members.
Gun device for biopsy.
The method according to claim 6,
Pressing the second button, the second elastic member is rotated to release the loaded state, the second piston is slid by the elasticity of the second spring to shoot the needle fixed to the second spring to be taken Permeated with tissue
Gun device for biopsy.
The method according to claim 6,
When the first button is pressed, the first elastic member is rotated to release the loaded state so that the first piston is slid by the elasticity of the first spring to shoot the cutting tube fixed to the first spring, Dissecting the tissue stored in the tissue storage of the needle
Gun device for biopsy.
The method of claim 1,
Further comprising a distance adjusting member for adjusting the working distance of the incision tube
Gun device for biopsy.
The method of claim 11,
The distance adjusting member
It consists of a mounting tube coupled to the main body, a control tube that is stretched and inserted into the mounting tube,
A screw fastening groove marked with a scale is formed in the control tube, and the screw is fastened to the scale indicating the working distance of the incision tube to operate as much as the distance for screwing the incision tube.
Gun device for biopsy.

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