KR20240147336A - Endoscope treatment apparatus for combining snare and injector - Google Patents

Abstract

An invention is disclosed for an endoscopic treatment device that reduces the procedure time by individually introducing a needle and a snare from an outer tube through the operation of an injector operating unit and a snare operating unit, thereby injecting a drug solution into a lesion or resecting tissue from a lesion without replacing the device during an endoscopic procedure.
The disclosed endoscopic therapeutic device is characterized by including a main body forming a body extending in one direction, an outer tube having a double lumen structure extending forward from a distal end of the main body and including a first inner tube and a second inner tube, an injector accommodated in the distal end of the first inner tube and including a needle for injecting a drug solution to swell lesion tissue, a snare accommodated in the distal end of the second inner tube and forming a snare for resecting the swollen lesion tissue, an injector operating unit connected to the injector via an injector tube and causing the injector to emerge from the distal end of the outer tube when moved, and a snare operating unit connected to the snare via a snare wire and causing the snare to emerge from the distal end of the outer tube when moved.

Description

{ENDOSCOPE TREATMENT APPARATUS FOR COMBINING SNARE AND INJECTOR}

The present invention relates to an endoscopic therapeutic device, and more specifically, to an endoscopic therapeutic device using a medical snare used in a procedure to remove a portion of tissue inside the body and an endoscopic injector used to inject a medicine into a mucosa or blood vessel.

An endoscope is a medical device used to examine the inside of the body for medical purposes. It is a surgical device that inserts a camera directly into the body to observe the inside of the organs. Endoscopes are classified into bronchoscopes, gastroscopes, laparoscopes, and colonoscopes depending on the area being examined. Recently, with the social changes such as Western lifestyles and changes in diet, colon diseases have been increasing. Accordingly, colonoscopy examination equipment and surgeries have been developed, and colonoscopy examinations have increased in quantity compared to the past. However, although colonoscopy examinations have become easier than before, they are still not a universal examination that anyone can easily perform. Since a camera is inserted directly into the body, it requires advanced technology to perform the examination quickly without causing pain to the patient, while also providing accurate diagnosis and treatment.

Endoscopic mucosal resection (EMR) is a procedure to remove polyps (mainly flat, sessile polyps) that occur in the mucosa of the esophagus, stomach, and colon using an endoscope. It is a procedure in which the lesion is captured and resected with a snare attached to the end of the endoscope. The practitioner must distinguish between lesions that require resection as confirmed through the endoscope and lesions that do not, and when performing lesion resection, the appropriate method must be selected based on the characteristics of the polyp found, such as the location, size, shape, and number of lesions. When performing lesion resection, necessary instruments may be used, such as a drug injection needle, ESD knife, snare, marker, biopsy device, and hemostatic clip.

However, since the drug was administered to the affected area while resecting the tissue of the affected area in the past, not only did the procedure take a long time due to the replacement of the surgical instrument for submucosal resection and the surgical instrument for drug administration, but this also increased the fatigue of the procedure, which reduced the accuracy of the procedure, and there was a problem that the cost was high because multiple surgical instruments had to be prepared.

In this regard, there is a prior art technology that uses multiple treatment devices in combination, Korean Patent Publication No. 10-2018-0132282 (hereinafter referred to as “prior patent”). The prior patent discloses a medical snare in which an injection needle and a snare are placed inside a tube. The prior patent provides a treatment device having a combined structure that can use a snare and a needle at the same time, but there was a problem that the snare and the needle collided during the process of exchanging the snare and the needle for a lesion requiring treatment using a needle and a lesion requiring treatment using a snare. Therefore, there is a demand for the development of a treatment device that can use a snare and an injector simultaneously without interference between them.

Korean Patent Publication No. 10-2018-0132282

The present invention was created in response to the above-mentioned need, and the purpose of the present invention is to provide an endoscopic treatment device that reduces the treatment time by individually inserting and exiting a needle and a snare from an outer tube through the operation of an injector operating unit and a snare operating unit, thereby injecting a drug solution into a patient's abdominal cavity or resecting tissue from a patient's abdominal cavity without replacing the device through the outer tube during an endoscopic procedure.

The present invention to achieve the above purpose,

In an endoscopic therapeutic device, the device comprises: a main body forming a body extending in one direction; an outer tube having a double lumen structure extending forward from a distal end of the main body and including a first inner tube and a second inner tube; an injector accommodated in the distal end of the first inner tube and including a needle for injecting a drug to swell lesion tissue; a snare accommodated in the distal end of the second inner tube and forming a snare for resecting the swollen lesion tissue; an injector operating unit connected to the injector via an injector tube and causing the injector to emerge from the distal end of the outer tube when moved; and a snare operating unit connected to the snare via a snare wire and causing the snare to emerge from the distal end of the outer tube when moved.

In addition, the injector operating unit includes a guide unit formed along the longitudinal direction of the main body unit, and an injector operating handle coupled to the main body unit so as to be able to slide along the guide unit, and the injector operating handle is characterized in that it further includes a hollow liquid injection port on one side that is internally connected to the injector tube.

In addition, the snare operating portion includes a snare operating handle coupled to an outer surface of the main body portion so as to be able to slide along the longitudinal direction of the main body portion, and the snare operating handle is characterized by including one or more ring-shaped handle portions.

In addition, the snare operating handle includes a power connection part internally connected to the snare wire on one side, and the snare wire and the snare are characterized in that they are made of a conductive electrode material.

In addition, the invention further includes a tip portion axially coupled to a front end of the outer tube, wherein the tip portion includes a first hole coupled to the front end of the first inner tube but having an inner diameter smaller than the outer diameter of the injector tube, and a second hole coupled to the front end of the second inner tube.

It is characterized by further including a stopper formed at least once at the front end of the first inner tube and protruding in the direction of the central axis of the first inner tube to limit movement of the injector tube.

In addition, at least one of the injector tubes or wires is characterized in that it further includes at least one friction reducing portion that forms a straight protrusion radially arranged on an outer peripheral surface thereof and extends in the longitudinal direction.

Since the endoscopic treatment device according to the present invention has a structure in which a needle and a snare are individually inserted and removed from an outer tube by operating an injector operating unit and a snare operating unit, the time required for an endoscopic treatment is significantly shortened without the need to replace the device during the treatment process of injecting a drug into a affected area or resecting the affected area with a snare during an endoscopic treatment.

In addition, according to the present invention, there is no concern about tissue thermal damage or perforation due to high temperature with a cold snare that can excise a cyst only by the movement of a wire, and since bleeding can be confirmed immediately after excision, the possibility of delayed bleeding can be blocked.

In addition, since it does not require electrical cauterization, natural healing is fast, and since it does not require connection to an electrosurgical device, the use of a high-frequency electric grounding pad is unnecessary, making it easy to change the patient's position and preventing the risk of burns due to poor grounding.

In addition, according to the present invention, by providing a power connection unit capable of selectively applying power to the operating unit, it is possible to apply power when necessary without changing the outer tube and surgical instrument, thereby enabling tissue removal at high temperatures using an electrode hot snare.

In addition, according to the present invention, there is an effect of preventing interference between the snare and the injector by applying a multi-lumen structure within one tube forming an outer tube so that the two mechanisms do not interfere with each other when operating.

In addition, according to the present invention, by forming one or more protrusions forming a tip along the outer surface of the snare wire and the injector tube, there is an effect of reducing friction with the inner surface of the tube lumen.

In addition, according to the present invention, there is an effect that allows for the excision of polyps in all anatomical locations by providing a rotational function to the snare.

FIG. 1 is a perspective view illustrating an endoscopic treatment device according to a preferred embodiment of the present invention.
Figure 2 is an exploded perspective view illustrating an endoscopic treatment device according to a preferred embodiment of the present invention.
FIG. 1 is a front view illustrating an endoscopic treatment device according to a preferred embodiment of the present invention.
FIG. 1 is a perspective view illustrating a tip portion of an endoscopic treatment device according to a preferred embodiment of the present invention.

Hereinafter, an embodiment of an endoscopic therapeutic device according to the present invention will be described with reference to the attached drawings.

In this process, the thickness of the lines depicted in the drawing and the size of the components may be exaggerated for the sake of clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions in the present invention, and these may vary depending on the intention or custom of the user or operator. Therefore, the definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view illustrating an endoscopic treatment device according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating an endoscopic treatment device according to one embodiment of the present invention.

An endoscopic therapeutic device according to one embodiment of the present invention includes a main body (10), an outer tube (20), an injector (30), a snare (40), an injector operating part (50), and a snare operating part (60) as shown in FIGS. 1 and 2.

The above main body (10) forms a body extending in one direction, thereby providing a space in which the outer tube (20), the injector operating unit (50), and the snare operating unit (60) are operatively installed. A connecting cap (11) for fitting and connecting the outer tube (20) is detachably connected to the front end of the main body (10), and a handle (12) for gripping is formed on the other side of the main body (10).

The outer tube (20) is connected to the front end of the main body (10) and extends forward, and is formed of a double lumen structure including a first inner tube (21) and a second inner tube (22). In other words, the outer tube (20) has two lumen structures formed within one tube, the first inner tube (21) and the second inner tube (22), and the first inner tube (21) and the second inner tube (22) form separate structures.

In a preferred embodiment of the present invention, the injector (30) is a means for injecting a drug solution to swell lesion tissue and is accommodated in the front end of the first inner tube (21), and the snare (40) is a means for forming a snare to excise swollen lesion tissue and is accommodated in the front end of the second inner tube (22). In addition, the injector (30) is connected to an injector operating unit (50) to be described later and an injector tube (31), and the snare (40) is connected to a snare operating unit (60) and a snare wire (41), so that the snare is configured to emerge from the front end of the outer tube (20) according to each operation.

Accordingly, the outer tube (20) separately accommodates the injector (30) and the snare (40) therein, and through this, the injector tube (31) and the snare wire (41) connected to the injector (30) and the snare (40) can secure independent movement.

In a preferred embodiment of the present invention, the outer tube (20) provides a path for the injector (30) and the snare (40) to be introduced and exited by the operation of the injector operating unit (50) and the snare operating unit (60), and is formed in a flexible tube shape, is connected to the tip of the main body (10), and is inserted into the tube of the endoscope and guided to the affected area in the body. Preferably, the outer tube (20) can be formed of various materials such as Teflon, polypropylene, and polyethylene.

In addition, the injector operating part (50) is provided in the main body (10) to guide the injector (30) to emerge from the tip of the outer tube (20) and to inject the liquid into the injector (30). To this end, the injector operating part (50) includes a guide part (51), an injector operating handle (52), and a liquid injection port (53).

Specifically, the guide part (51) is provided in the main body part (10) to provide a space in which the injector operating handle (52) slides. In a preferred embodiment of the present invention, the guide part (51) is formed along the longitudinal direction of the main body part (10), and therefore, the injector operating handle (52) guided by the guide part (51) is configured to be able to move forward and backward along the longitudinal direction of the main body part.

The above injector operating handle (52) is inserted into the guide part (51) and receives the liquid from the outside through the liquid injection port (53). The liquid injection port (53) is formed on one side of the injector operating handle (52) and is formed as a hollow injection port configured to be internally connected to the injector tube (31). Accordingly, the injector operating handle (52) performs the function of operating the injector (30) so that it can be inserted and removed from the front end of the outer tube (20) by moving the injector tube (31) in the longitudinal direction.

In addition, the above-mentioned liquid injection port (53) is connected to the injector (30) through the injector tube (31) so as to inject the injected liquid into the injector (30).

Accordingly, the injector operating handle (52) not only serves to connect the liquid injection port (53) and the injector (30) so that they can be communicated with each other, but also serves to move the injector (30) when the injector operating handle (52) adjusts its position in the longitudinal direction of the guide portion (51). At this time, it is advantageous for the injector tube (31) to be made of a material having high bending (flexibility) so as to prevent the outer tube (20) from being folded or bent during the insertion process when the outer tube (20) is inserted into the working channel provided in the endoscope.

Meanwhile, the snare operating part (60) is provided in the main body (10) and performs the function of making the snare (40) appear and disappear from the tip of the outer tube (20) and operating the snare (40) so that it can rotate. To this end, the snare operating part (60) includes a snare operating handle (61) and a grip part (62).

Specifically, the snare operating handle (61) is coupled to the outer surface of the main body (10) so as to be able to slide along the longitudinal direction of the main body (10), and is internally connected to the snare wire (42). Therefore, when the snare operating handle (61) slides along the main body (10), it performs the function of operating the snare (40) so as to be able to emerge from the tip of the outer tube (20) by moving the snare wire (41) in the longitudinal direction.

The above handle part (62) is formed in a ring shape configured to be gripped by the user's finger in order to facilitate gripping of the snare operating handle (61). In a preferred embodiment of the present invention, the handle part (62) is arranged so that it can be used by the user's index and middle fingers, but is not limited thereto, and other arrangements may be applied as needed.

In one embodiment of the present invention, the snare operating part (60), more specifically, the snare operating handle (61), is configured to be axially rotatable with respect to the central axis of the main body (10). Therefore, when the snare operating handle (61) is rotated, the snare wire (41) is rotated, thereby rotating the snare (40).

In a preferred embodiment of the present invention, the snare (40) is a cold snare that does not use high-frequency electricity and can excise the cyst only by the movement of the wire. However, it is not limited to this, and in another embodiment of the present invention, the snare (40) can be connected to a power source to enable tissue removal by high temperature as an electrode-type 'hot snare'.

For this purpose, the snare operating handle (61) may be provided with a power connection part (62) that is internally connected to the snare wire (41) on one side. External power may be supplied through the power connection part (62), and for this purpose, a connecting member such as a power connection terminal may be included in the power connection part (62).

In addition, in this embodiment, the snare wire (41) and the snare (40) are made of a conductive electrode material, so that power applied through the power connection part (62) is applied to the snare (40) through the snare wire (41), so that the snare (40) becomes conductive and can be used as a 'hot snare' that removes a lesion at high temperature.

Meanwhile, in a preferred embodiment of the present invention, a tip portion (70) axially coupled to the tip portion of the outer tube (10) is further included.

The above tip portion (70) is coupled to the front end of the outer tube (10) to prevent damage to the front end of the outer tube (10) when the injector (30) and the snare (40) are released.

Furthermore, in one embodiment of the present invention, the tip portion (70) may be configured to have a function of limiting the protrusion range of the injector (30) to prevent the needle of the injector (30) from protruding more than necessary from the tip end of the outer tube (10) or falling out when the injector (30) is retracted.

In this embodiment, the tip portion (70) may include a first hole (71) that is coupled with the tip portion of the first inner tube (21) of the outer tube (10), but has an inner diameter smaller than the outer diameter of the injector tube (31), and a second hole (72) that is coupled with the tip portion of the second inner tube (22). At this time, the first inner tube (21) and the first hole (71), and the second inner tube (22) and the second hole (72) are arranged to share a central axis with each other.

Accordingly, the needle of the injector (30) protruding from the tip end of the outer tube (10) moves outwardly through the first inner tube (21), but the tip end of the injector tube (31) is restricted from moving in the first hole (71), and as a result, only the needle of the injector (30) can be configured to protrude outwardly from the tip end of the outer tube (10) by the tip portion (70).

In another embodiment of the present invention, a stopper (210) may be included to limit the protrusion range of the injector (30) in order to prevent the needle of the injector (30) from protruding more than necessary from the tip of the outer tube (10) or from falling out when the injector (30) is retracted.

In this embodiment, the stopper (210) may be formed at least once at the tip end of the first inner tube (21) of the outer tube (10) and configured to protrude inwardly in the direction of the central axis of the first inner tube (21) to limit the movement of the injector tube (31).

Accordingly, the needle of the injector (30) protruding from the tip of the outer tube (10) passes through the first inner tube (21) and moves outward, but the tip of the injector tube (31) is restricted from moving by the stopper (210), and as a result, only the needle of the injector (30) can protrude outward from the tip of the outer tube (10) by the stopper (210).

Meanwhile, in a preferred embodiment of the present invention, at least one of the injector tube (31) or the snare wire (41) may further include a friction reducing member to prevent damage due to friction while moving within the first inner tube (21) or the second inner tube (22) of the outer tube (10).

The above friction reduction member is formed by including a straight protrusion that is radially arranged on the outer surface of the injector tube (31) or snare wire (41) and extends in the longitudinal direction.

In a preferred embodiment of the present invention, the straight protrusion forming the friction reducing member may be formed as a pointed protrusion, i.e., a sharp shape. Accordingly, the injector tube (31) or the snare wire (41) can move while maintaining a minimum contact with the inner surface of the first inner tube (21) or the second inner tube (22) of the outer tube (10) by the friction reducing member forming the pointed protrusion, so that friction can be reduced.

Although the present invention has been described with reference to the embodiments shown in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

Therefore, the true technical protection scope of the present invention should be defined by the following patent claims.

10: Main body
11: Connection cap
12: Handle
20: Outer tube
21: First Inner Chamber
210: Stopper
22: Second Inner Court
30: Injector
31: Injector tube
40: Snare
41: Snare Wire
50: Injector control unit
51: Guide Department
52: Injector operating handle
53: Liquid injection port
60: Snare Controls
61: Snare operating handle
62: Power connector
70: Tip section
71: Hole 1
72: Hole 2

Claims (7)

In endoscopic treatment devices,
A main body portion forming a body extending in one direction;
An outer tube having a double inner cavity structure extending forward from the tip of the main body and including a first inner tube and a second inner tube;
An injector, which is accommodated in the front end of the first inner tube and includes a needle for injecting a drug solution to swell lesion tissue;
A snare that is accommodated in the distal end of the second inner tube and forms a loop for resecting swollen lesion tissue;
An injector operating unit connected to the injector and the injector tube, and causing the injector to emerge from the tip of the outer tube when moved; and
A snare operating unit connected to the above snare and snare wire and causing the snare to emerge from the tip of the outer tube when moved;
An endoscopic therapeutic device characterized by including a .
In the first paragraph,
The above injector operating unit is,
A guide portion formed along the longitudinal direction of the main body portion; and
An injector operating handle coupled to the main body so as to be able to slide along the guide portion;
Including,
The above injector operating handle is,
An endoscopic therapeutic device further comprising a hollow drug injection port internally connected to the injector tube on one side.
In the first paragraph,
The above snare control unit is,
A snare operating handle coupled to the outer surface of the main body so as to be able to slide along the longitudinal direction of the main body;
Including,
The above snare operating handle is,
An endoscopic therapeutic device characterized by including one or more ring-shaped handle parts. In the third paragraph,
The above snare operating handle is,
Includes a power connection part internally connected to the snare wire on one side,
An endoscopic therapeutic device, characterized in that the snare wire and the snare are made of a conductive electrode material.
In paragraph 1,
A tip portion axially coupled to the tip end of the outer tube;
Including more,
The above tip part is,
A first hole coupled to the tip of the first inner tube and having an inner diameter smaller than the outer diameter of the injector tube; and
An endoscopic therapeutic device characterized by including a second hole coupled to a tip portion of the second inner tube.
In paragraph 1,
At least one is formed at the tip of the first inner tube,
A stopper formed to protrude in the direction of the central axis of the first inner tube to limit the movement of the injector tube;
An endoscopic therapeutic device characterized by further including:
In paragraph 1,
One or more of the above injector tubes or wires,
An endoscopic therapeutic device characterized in that it further includes one or more friction-reducing portions forming a linear protrusion radially arranged on the outer surface and extending in the longitudinal direction.