Medical Snare Device

Abstract

The present invention relates to a medical snare device that can accurately and quickly remove polyps that have developed in human organs, while minimizing bleeding from the area where the polyp has been removed. The device is composed of a main body having upper and lower guide holes, a rotating body that guides a polyp removal line and a medical solution line, an internal body entry part that houses and protects the polyp removal line and the medical solution line, a polyp removal line operating means that moves the polyp removal line forward and backward, and a medical solution line operating means that moves the medical solution line forward and backward.

Description

[Technical Field]

[0001] The present invention relates to a medical snare device that can accurately and quickly remove polyps that have developed in human organs, while minimizing bleeding at the site where the polyp has been removed. [Background technology]

[0002] In general, endoscopes are medical instruments that enable direct observation of the interior of hollow organs such as the stomach and esophagus, or the thoracic or abdominal cavities. They are subdivided into a wide variety of types depending on their intended use, such as bronchoscopes, laryngoscopes, esophagoscopes, gastrointestinal endoscopes, hysteroscopes, urethroscopes, arthroscopes, cystoscopes, and laparoscopes. They are medical instruments that allow observation of the interior of the human body, as well as easy removal of tissue and collection of secretions, thereby greatly assisting in the detection, diagnosis, and treatment of diseases.

[0003] If polyps are found during colonoscopy using the above-mentioned endoscope, a procedure to remove the polyps is performed by inserting multiple surgical instruments into the human body together with the endoscope while observing the affected area with the endoscope.

[0004] That is, the method of removing existing polyps involves first inserting a snare, a treatment tool for removing polyps, into the human body through the endoscope and bringing it close to the discovered polyp. Then, the snare wire is protruded from the endoscope tube through the operating unit, and the polyp is removed using the wire to which high-frequency current is supplied. After that, the snare is separated from the endoscope, and a separate hemostat is inserted into the endoscope tube to stop bleeding on the side of the body where the polyp was removed.

[0005] The above-mentioned snare requires that the direction of the loop be controlled so that it can be hooked onto tissue such as a polyp, etc. In other words, the inside of the loop must be hooked onto the tissue of the affected area and the protrusion such as a polyp, and the loop must be tightened in order to provide proper treatment.

[0006] Therefore, conventionally, a snare retracted into the inside of an endoscope tube is configured so that a twisting force is transmitted to the loop inserted into the body through the endoscope by rotating the operating parts such as the device and actuator, and twisting the flexible insulating tube and the wire cord retracted inside it. The surgeon adjusts the direction of the loop by using the operating parts such as the device and actuator while looking through the endoscope.

[0007] However, the conventional snare drums have the drawback that it is inconvenient and difficult to adjust the direction of the loop.

[0008] Therefore, in order to solve the above-mentioned problems, the inventor has examined the configuration of the medical snare device of the prior application and publication of Korean Patent Registration No. 10-2262289 (Patent Document 1) as shown in Figures 1 and 2, and found that it has the following structure.

[0009] -Note- A medical snare device comprising a wire cord (10) that is inserted through a tube (12) and has a loop (11) formed at its tip, a rotating body (20) that is connected to the wire cord and rotates the wire cord, and a handle (30) that is connected to the rotating body and moves the wire cord forward and backward together with the rotating body. The rotating body (20) is hollow inside and open at the front, and is provided with a sleeve (21) that has a long hole (21a) formed on one side and an electrode hole (21b) formed on the other side, and a high-frequency electrode (22b) that the wire cord passes through and comes into contact with is provided at one side of the open part of the sleeve, and a fixture (22) that has a guide hole (22a) formed at the rear center is provided, and the guide hole (21b) is provided at the rear of the fixture. A guide 23a is formed on the rear end surface of the guide, and a lower rotor 23 is connected to the rear end surface of the guide. The lower rotor 23 has a lower vertical portion 23b-1 on one side and a lower tooth 23b on the upper end of the vertical portion, the lower tooth 23b having a lower inclined surface 23b-2 sloping downward on the other side. An upper rotor 24 is connected to the upper end surface of the lower rotor. The upper rotor 24 has an upper vertical portion 24b-1 on one side and an upper tooth 24b on the upper end of the vertical portion, the upper tooth 24b having an upper inclined surface 24b-2 sloping downward on the other side. An operating lever 24a is provided on one side. Elastic springs 25, 26 are provided between the fixing member 22 and the lower rotor 23 and between the upper rotor and the end of the sleeve, respectively.

[0010] The Korean Patent Registration No. 10-2262289 having the above-mentioned configuration (Patent Document 1) has a problem in that the configuration for rotating the loop 11 is complicated and the rotation of the loop is not smooth. Summary of the Invention [Problem to be solved by the invention]

[0011] The present invention was invented to solve the problems of the prior art. Its purpose is to provide a medical snare device that includes a needle that inflates a polyp that has developed in an organ by injecting a liquid medicine into the polyp to increase its size, making it easier to attach a loop to the polyp when removing it, and a loop that cuts out the polyp. The needle also allows for accurate forward and backward movement of the loop, and the loop also rotates precisely, minimizing bleeding at the area cut by the loop, thereby reducing pain for the patient and allowing for a quick recovery. [Means for solving the problem]

[0012] The medical snare device of the present invention is configured to solve the above-mentioned problems by comprising a main body 100 having a hollow interior 110, a fixing member 120 formed at the rear end, an upper guide hole 130 formed along the longitudinal direction in front of the fixing member, and a lower guide hole 140 formed along the longitudinal direction in front of the upper guide hole; a rotating body (200) that is rotatably attached to the distal end of the main body and that guides a polyp removal line (320) having a loop (310) at its distal end and a drug solution supply line (340) having a needle (330) at its distal end in forward and backward directions; an internal body entry part (300) that is connected to the rotating body, that is entered into the body while accommodating a polyp removal line and a drug solution supply line, and that exposes the loop or needle to the outside or enters the inside by actuation of a loop actuation means (400) and a needle actuation means (500); a loop operating means 400 including a loop moving body 410 having a rear end of the polyp removal line attached thereto and moving forward / backward along the main body, a current supply port 420 formed on one side of the loop moving body, and a loop operating tool 430 formed on the other side; a needle actuating means 500 including a needle moving body 510 that moves forward and backward along the body with the rear end of the drug solution supply line attached thereto, and a drug solution supply port 520 and a needle actuating tool 530 formed on one side and the other side of the needle moving body; and a cap 600 that is openably provided on one side of the body in the region where the needle actuating means moves forward / backward, and that allows the needle actuating means to be separated and coupled to the body. [Effects of the Invention]

[0013] As stated in the above-mentioned objectives, the medical snare device of the present invention has the effect of accurately moving the needle, which inflates the polyp by injecting a medicinal solution into it to increase its size and make it easier to attach a loop when removing polyps that have developed in organs, and the loop, which cuts out the polyp, forward and backward, as well as precisely rotating the loop.It also minimizes bleeding from the area cut by the loop, thereby reducing patient pain and allowing for a quick recovery. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is an exploded perspective view for describing the configuration of a conventional medical snare device. [Figure 2] FIG. 10 is an exploded perspective view showing a loop rotation structure in a conventional medical snare device. [Figure 3] 1 is a perspective view of a medical snare device according to the present invention; [Figure 4] 1 is a cross-sectional view of a medical snare device according to the present invention. [Figure 5] 1 is a perspective view of a main body of a medical snare device according to the present invention; [Figure 6a] 1 is a structural diagram of a rotating body in a medical snare device according to the present invention. [Figure 6b] 1 is a structural diagram of a rotating body in a medical snare device according to the present invention. [Figure 7] 1 is a perspective view of a polyp removal line in a medical snare device according to the present invention. FIG. [Figure 8] 1 is a perspective view of an excerpt of a drug solution supply line in a medical snare device according to the present invention. [Figure 9] 1 is a perspective view of an extract of a loop actuation means in the medical snare device of the present invention. FIG. [Figure 10]1 is a perspective view of a needle actuation means in the medical snare device of the present invention. FIG. [Figure 11] FIG. 2 is a bottom perspective view of an excerpt of the cap of the medical snare device of the present invention. [Figure 12] 1 is a cross-sectional view of a tip connection in a medical snare device of the present invention. [Figure 13] 1 is an enlarged cross-sectional view of an excerpt of a current supply port in the medical snare device of the present invention. [Figure 14a] 1 is a cross-sectional view showing the operational relationship between a loop and a needle in the medical snare device of the present invention. [Figure 14b] 1 is a cross-sectional view showing the operational relationship between a loop and a needle in the medical snare device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] As shown in Figures 3 and 4, the medical snare device of the present invention supplies a medicinal solution to a polyp that has developed in an internal organ, causing the polyp to expand, and then hooks a loop around the expanded polyp. Then, high-frequency current is supplied to cut the polyp, minimizing bleeding and enabling the polyp to be removed quickly and easily.

[0016] As shown in Figures 3 to 5, the medical snare device of the present invention for quickly and easily removing polyps that have developed in organs while minimizing bleeding comprises a main body 100 having a hollow interior 110, a fixture 120 formed at its rear end, an upper guide hole 130 formed in the longitudinal direction in front of the fixture, and a lower guide hole 140 formed in the longitudinal direction in front of the upper guide hole.

[0017] The reason why the hollow 110 is formed inside the main body 100 is to allow the loop actuation means 400 and needle actuation means 500 described below to be installed and for the installed loop actuation means 400 and needle actuation means 500 to move forward and backward.

[0018] In addition, the reason for forming the fixing device 120 is to allow the doctor performing the polyp surgery to insert his / her finger to support the main body 100, the reason for forming the upper guide hole 130 is to limit the forward / backward range of the loop operating means 400, and the reason for forming the lower guide hole 140 is to limit the forward / backward range of the needle operating means 500.

[0019] If the forward / backward range of the loop actuation means 400 and the needle actuation means 500 is not limited, the loop actuation means 400 and the needle actuation means 500 may advance further than necessary, and the loop 310 and the needle 330 may be pulled further out of the tip of the body entry part 300 than necessary, which may make the polyp removal surgery difficult and may also damage the polyp removal part by the loop 310 and the needle 330. Therefore, it is preferable to limit the amount of advancement of the loop actuation means 400 and the needle actuation means 500.

[0020] Furthermore, the fixing device 120 is preferably formed in a ring shape so that the doctor performing the polyp removal surgery can insert his / her finger and fix it, but any other shape that allows the doctor's finger to fix the main body 100 is also acceptable.

[0021] The distal end of the main body 100 is provided with a rotor coupling part 150 through which a polyp removal line 320 and a drug solution supply line 340 pass and through which the rotor 200 is installed to rotate freely.

[0022] In addition, the rotating body coupling part 150 may have an incision part 160 formed therein for inserting the polyp removal line 320 or the drug solution supply line 340 into the rotating body coupling part 150 .

[0023] In addition, as shown in Figures 6a and 6b, the rotor 200 of the present invention is rotatably connected to the rotor connecting part 150 formed at the tip of the main body 100, and a polyp removal line 320 having a loop 310 at its tip and a medicinal solution supply line 340 having a needle 330 at its tip pass through it, and serves to guide the polyp removal line 320 and the medicinal solution supply line 340 forward and backward.

[0024] The reason why the rotator 200, which performs the above-described function, is installed rotatably from the rotator coupling part 150 formed at the tip of the main body 100 is that when the loop 310 is to be hooked around a polyp, the loop 310 must be rotated to align its direction with the direction in which it can be hooked around the polyp. At this time, the rotator 200 can be gripped by hand and rotated in the desired direction to easily rotate the loop 310 together with the polyp removal line 320 in the desired direction.

[0025] As shown in Figures 6a and 6b, one embodiment of the rotor 200 that functions as described above is configured as follows: a rotor 210 that is installed at the tip of the main body 100 so as to rotate freely in place; a sleeve 220 that is formed integrally with the rotor inside the rotor, through which a polyp removal line 320 and a medicinal solution supply line 340 pass and to which an external tube 350 is connected at the tip; and a guide 230 that is installed behind the sleeve, through which the polyp removal line 320 and the medicinal solution supply line 340 pass and to which an internal tube 360 ​​is connected at the tip.

[0026] In one embodiment of the rotating body 200, the rear of the sleeve 220 and the front of the guide 230 are preferably tightly coupled to each other to form a single unit, thereby moving together with the rotating device 210. Therefore, when the rotating device 210 is gripped by hand and the main body 100 is rotated to rotate the loop 310, the polyp removal line 320 rotates together with the main body 100, and the loop 310 is also rotated.

[0027] However, the loop 310 is rotated when it is exposed to the outside of the body entrance part 300, which will be described later. When the main body 100 is rotated, the drug solution supply line 340 is also rotated.

[0028] The rotation of the main body 100 is achieved by holding the rotating device 200 by hand and rotating the fixing device 120, which causes the main body 100 to rotate and at the same time causes the loop 310 provided at the tip of the polyp removal line 320 to rotate; in addition, by rotating the loop operating means 400, the main body 100 is rotated and at the same time causes the loop 310 provided at the tip of the polyp removal line 320 to rotate.

[0029] In addition, the sleeve 220 and the guide 230 are preferably formed in a hollow cylindrical shape so that the polyp removal line 320 and the drug solution supply line 340 can smoothly pass through and advance, and the sleeve 220 and the guide 230 are preferably connected by a tight fit method or a screw-on method, which will prevent them from being separated once connected.

[0030] As shown in FIG. 7, one embodiment of the polyp removal line 320 having a loop 310 at its tip is configured as follows: a hollow, hard, "-"-shaped steel wire 321 is provided from the loop operating means 400 described below to the rotor 200; a current-carrying wire 322 passes through the hollow interior of the steel wire; one end of the wire 322 passing through the steel wire 321 is connected to a current supply port 420; a loop 310 is provided at the other end of the wire 322; and a wire protection tube 323 is provided on the wire 322 from the end of the steel wire 321 to the part where the loop 310 is provided.

[0031] In the configuration of one embodiment of the polyp removal line 320, the steel wire 321 is made to be hollow and rigid in a "-" shape so that when the wire 322 passes through it and moves forward / backward with the operation of the loop operating means 400, it does not bend or deform and can move forward / backward in a "-" shape.

[0032] Furthermore, it is preferable that the wire 322 is made of a metal material that can rotate together with the main body 100 when it is rotated, and the wire 322 made of such a metal material must be bendable and have elasticity that allows it to return to its original shape after being bent.

[0033] The reason for this is that when the internal body entry portion 300 enters an organ of the human body, it can easily bend along the curvature of the organ and enter.

[0034] Meanwhile, the wire 322 made of the elastic metal material is tightly fitted with the wire protection tube 323 made of a resin material. The reason for this is that when the main body 100 is rotated, the wire 322 also rotates together, preventing deformation of the wire 322, and all of the rotational force of the main body 100 is transmitted to the wire 322, allowing the accurate rotation of the wire 322 to precisely rotate the loop 310, while at the same time preventing the current flowing through the wire 322 from being transmitted to the chemical solution supply line 340.

[0035] In one embodiment of the configuration of the loop 310, as shown in FIG. 14a, it is connected to the end of the wire 322, and when exposed to the outside of the body entry portion 300, it forms an arc, and when it enters the body entry portion 300, it is preferable that it consists of a core wire in which the arc overlaps in a straight line as shown in FIG. 14b, and such a core wire is made of a metal material through which an electric current flows and which has elasticity.

[0036] The reason why the loop 310 having the above-described structure is made of a core wire (a steel wire thinner than the wire 322) is to make it easier to cut out the polyp when it is clamped and then pulled.

[0037] Furthermore, when the loop 310 is exposed to the outside of the body entry portion 300, it takes on an arc shape, and when it enters the body entry portion 300, the arc shape overlaps to form a straight line. This is because the loop 310 has elasticity, so when it is exposed to the inside of the body entry portion 300, it takes on an arc shape so as to fit and engage with the polyp in its original shape, and when it enters the body entry portion 300, it overlaps to form a straight line due to its elasticity.

[0038] As shown in FIG. 8, the chemical solution supply line 340 of the present invention comprises a hollow, hard, "-" shaped steel wire 341 extending from the needle actuation means 500 to the rotor 200, a chemical solution tube 342 penetrating the interior of the steel wire and connected to the chemical solution supply port 520, and an extension of the chemical solution tube 342 from the end of the steel wire 341 to the location where the needle 330 is provided, with a chemical solution protection tube 343 provided on the extended chemical solution tube.

[0039] The reason why the steel wire 341 in the chemical solution supply line 340 configured as described above is made to be a hard, hollow "-" shape is that when the chemical solution tube 342 passes through it and moves forward / backward with the operation of the needle operating means 500, it does not bend or deform and moves forward / backward in a "-" shape, i.e., horizontally. The chemical solution tube 342 supplies the chemical solution injected from the chemical solution supply port 520 to the needle 330, and the chemical solution protection tube 343 serves to house and protect the chemical solution tube 342.

[0040] Meanwhile, the internal body entry part 300 of the present invention is connected to the rotating body 200 and enters the body while accommodating the polyp removal line 320 and the drug solution supply line 340, and serves to expose the loop 310 or the needle 330 to the outside or enter the inside along the operating direction of the loop operating means 400 and the needle operating means 500.

[0041] As described above, the action of exposing the loop 310 or the needle 330 to the outside or inserting it into the body entry portion 300 is such that, as shown in Figure 14a, when the loop 310 is exposed to the outside of the body entry portion 300, the needle 330 is inserted into the body entry portion 300, and as shown in Figure 14b, when the needle 330 is exposed to the outside of the body entry portion 300, the loop 310 is inserted into the body entry portion 300.

[0042] One embodiment of the internal body entry part 300 that functions as described above is configured with an inner tube 360 ​​through which the loop 310 and needle 330 move in and out while accommodating the polyp removal line 320 and the drug solution supply line 340, and an outer tube 350 that accommodates a portion of the inner tube 360 ​​at the tip of the rotor 210.

[0043] In one embodiment of the configuration of the body entry portion 300, the inner tube 360 ​​accommodates and protects the polyp removal line 320 and the medicinal solution supply line 340, and also serves to easily insert the polyp removal line 320 and the medicinal solution supply line 340 into the body without causing any harm to the body after insertion, and the outer tube 350 serves to protect the connecting portion between the rotating body 200 and the inner tube 360 ​​from breaking.

[0044] Furthermore, as shown in FIG. 12, a loop access hole 371 and a needle access hole 372 through which the loop 310 and needle 330 pass are formed at the tip of the body entry portion 300 of the present invention, and a locking jaw 373 is formed behind the needle access hole. A tip 370 having a needle guide 374 for guiding the needle 330 is provided in the needle access hole 372 with the locking jaw formed behind it.

[0045] The reason for providing the needle guide 374 in the configuration of the tip 370 is to enable the needle 330 to be normally pulled out in a "-" shape when entering and exiting from the tip of the body entry part 300, and the reason for forming the locking jaw 373 is to enable the tip of the medicinal solution tube 342 to be locked into the locking jaw 373, allowing only a certain amount of the needle 330 to be pulled out of the body entry part 300, thereby enabling stable injection of the medicinal solution into the polyp.

[0046] In addition, the loop inlet / outlet hole 371 and the needle inlet / outlet hole 372 are formed with a diameter that allows the loop 310 and the needle 330 to move in and out smoothly, and the loop inlet / outlet hole 371 is formed larger than the needle inlet / outlet hole 372 so that the loop 310 can move in and out easily.

[0047] As shown in FIG. 9, the loop operating means 400 of the present invention comprises a loop moving body 410 having the rear end of the polyp removal line 320 attached thereto and moving forward / backward along the main body 100, a current supply port 420 provided on one side of the loop moving body, and a loop operating tool 430 formed on the other side.

[0048] When the loop operating means 400 having the above-described configuration is moved forward / backward along the longitudinal direction of the main body 100, the loop operating means 400 moves along the forward / backward direction to move the polyp removal line 320, thereby exposing the loop 310 to the outside of the body entry part 300 or entering the inside of the body entry part 300.

[0049] In the configuration of the loop operating means 400 as described above, the loop moving body 410 is formed in the shape of a hollow pipe that is fitted and coupled to accommodate the main body 100 and moves along the longitudinal direction of the main body 100, and the shape of the loop moving body 410 is formed to match the external shape of the main body 100 so that the loop moving body 410 can move stably along the main body 100.

[0050] The hollow portion of the loop moving body 410 can be formed into a circular, elliptical, or triangular or more polygonal shape, and the external shape of the main body 100 in the area where the loop moving body 410 is attached and moved can also be formed into a circular, elliptical, or triangular or more polygonal shape that matches the shape of the hollow portion of the loop moving body 410.

[0051] However, it is preferable that the hollow shape of the loop moving body 410 and the external shape of the main body 100 in the area where the loop moving body 410 is coupled and moved are formed into an oval shape or a polygonal shape with three or more corners. This is because the loop moving body 410 can move forward / backward in a straight line without rotating while moving along the main body 100.

[0052] In addition, it is preferable that the loop operating tool 430 is formed in a ring shape on both sides of the loop moving body so that two fingers can be inserted, in order to allow the loop moving body 410 to move forward / backward stably.

[0053] 13, the current supply port 420 is provided with a hollow current supply body 421, and a fixed induction port 422 having a screw hole 423 formed therein for fixing and guiding the rear end of the polyp removal line 320 is inserted into the lower inner part of the current supply body 421. A fixing screw 425 having a fixing hole 424 formed therein for receiving and fixing the "-" shaped steel wire 321 is connected to the screw hole 423 at the lower end of the fixed induction port 422. A current supply piece 426 for supplying current is provided in the rear screw hole 423 of the fixing screw 425.

[0054] In the configuration of the current supply port 420, the current supplier 421 is provided with a fixed induction port 422 and a current supply piece 426, the screw hole 423 of the fixed induction port 422 is provided with a fixing screw 425, the fixing hole 424 is for fitting and fixing a part of the rear of the polyp removal line 320, and the fixing screw 425 fixes the rear of the polyp removal line 320 fitted into the fixing hole 424. The current supply piece 426 supplies an external current to supply the current to the loop 310 via the polyp removal line 320.

[0055] As shown in FIG. 10, the needle actuating means 500 of the present invention comprises a needle moving body 510 that moves forward and backward along the main body 100 with the rear end of the drug solution supply line 340 attached thereto, a drug solution supply port 520 formed on one side of the needle moving body, and a needle actuating tool 530 formed on the other side.

[0056] When the needle actuation means 500 having the above-described configuration is moved forward / backward along the longitudinal direction of the main body 100, the needle actuation means 500 moves along the forward / backward direction, thereby moving the drug solution supply line 340 and exposing the needle 330 to the outside of the body entry part 300 or entering the inside of the body entry part 300.

[0057] In the configuration of the needle actuation means 500, the needle moving body 510 is formed with a fixture 511 to which the "-" shaped steel wire 341, which is a component of the medicinal solution supply line 340, is connected and fixed, and a guide part 512 that guides the polyp removal line 320 is formed on the upper part of the fixture, thereby fixing the medicinal solution supply line 340 and smoothly moving the polyp removal line 320 forward and backward.

[0058] Further, the guide portion 512 is formed with a seating groove 513 in which a protrusion 620 of a control piece 610 formed on a cap 600, which will be described later, is seated.

[0059] In the configuration of the needle moving body 510, the fixing device 511 fixes the rear end of the "-" shaped steel wire 341, the guide part 512 serves to guide the polyp removal line 320 so that it can move forward / backward smoothly without getting caught on the needle moving body 510, and the seating groove 513 seats the protrusion 620 of the control piece 610 formed on the cap 600 described below, thereby controlling the needle operating means 500 so that it cannot be operated arbitrarily.

[0060] In addition, the drug solution supply port 520 is formed so that an insertion hole 521 protrudes to the outside, into which the inlet of a syringe is inserted at one side of the needle moving body 510 and the drug solution can be injected, and the insertion hole 521 is provided with a stopper 522 that opens when the drug solution is to be supplied and closes to seal after the drug solution has been supplied.

[0061] In the configuration of the above-mentioned medicinal solution supply port 520, the insertion hole 521 is where the inlet of a syringe is inserted so that the medicinal solution is supplied to the needle 330 via the medicinal solution supply line 340, and the stopper 522 is a component that blocks the insertion hole 521 to prevent foreign matter from entering when the medicinal solution is not being supplied.

[0062] In addition, the needle actuator 530 has handles 531 formed on both sides of the needle moving body 510 that can be held by hand. The reason why the needle actuator 530 is formed on both sides of the needle moving body 510 is so that the needle moving body 510 can be moved by holding it with the selected hand, either the right or left hand.

[0063] As shown in Figures 3 and 11, the cap 600 of the present invention is openably and closably provided on one side of the main body 100 in the area where the needle actuating means 500 moves forward / backward, allowing the needle actuating means 500 to be separated and connected to the main body 100.

[0064] The reason why the cap 600 is detachably connected to the body 100 is that the needle operating means 500 must be fitted into the hollow portion 110 of the body 100, so one side of the body 100 must be open.

[0065] Therefore, in the present invention, a cap 600 is formed on one side of the body 100 in an area where the needle operating means 500 moves forward / backward so as to be able to be opened and closed.

[0066] The cap 600 is formed with a control piece 610 at the front / rear to prevent the needle actuating means 500 from being arbitrarily actuated when the needle 330 is completely exposed to the outside of the body entry part 300 by actuation of the needle actuating means 500, and when the needle 330 is completely inserted into the body entry part 300, and the control piece 610 controls the arbitrary actuation of the needle actuating means 500.

[0067] A protrusion 620 is formed on the inner surface of the control piece 610 to apply pressure to the needle actuating means 500. When the needle 330 is completely exposed to the outside of the body entry part 300, the protrusion 620 on one side is seated in the seating groove 513 on one side, preventing the needle actuating means 500 from moving arbitrarily. When the needle 330 is completely inserted into the body entry part 300, the protrusion 620 on the other side is seated in the seating groove 513 on the other side, preventing the needle actuating means 500 from moving arbitrarily, thereby ensuring stability during polyp removal surgery.

[0068] As shown in Figure 14a, when the loop actuation means 400 is advanced from the main body 100, the polyp removal line 320 advances and the loop 310 is exposed to the outside of the body entry portion 300, and when the needle actuation means 500 is advanced from the main body 100, the medicinal solution supply line 340 advances and the needle 330 is exposed to the outside of the body entry portion 300, and when the needle 330 is exposed, the loop actuation means 400 is advanced backward from the main body 100 so that the loop 310 advances into the body entry portion 300, and when the loop 310 is exposed, the needle actuation means 500 is advanced backward from the main body 100 so that the needle 330 advances into the body entry portion 300.

[0069] As described above, the medical snare device of the present invention has the advantages of accurately moving the needle, which inflates the polyp by injecting a medicinal solution into it to increase its size and make it easier to attach a loop when removing polyps that have developed in organs, and the loop, which cuts out the polyp, forward and backward, as well as precisely rotating the loop. It also minimizes bleeding from the area cut by the loop, thereby reducing the patient's pain and allowing for a quick recovery.

Claims

1. a main body (100) having a hollow interior (110), a fixture (120) formed at its rear end, an upper guide hole (130) formed along the longitudinal direction in front of the fixture, and a lower guide hole (140) formed along the longitudinal direction in front of the upper guide hole; a rotating body (200) that rotates while guiding a polyp removal line (320) and a drug solution supply line (340) with a needle (330) at its tip in forward and backward directions, the polyp removal line (320) having a loop (310) formed of a core wire that has elasticity when a current flows through it, the loop (310) being rotatably attached to the tip of the main body and that forms an arc when exposed to the outside of the body entry portion at the tip, and the arc overlaps to form a straight line when entering the body entry portion; an internal body entry part (300) that is connected to the rotating body, that is entered into the body while accommodating a polyp removal line and a drug solution supply line, and that exposes the loop or needle to the outside or enters the inside by actuation of a loop actuation means (400) and a needle actuation means (500); a loop operating means (400) including a loop moving body (410) that moves forward / backward along a main body with the rear end of the polyp removal line attached thereto, a current supply port (420) formed on one side of the loop moving body, and a loop operating tool (430) formed on the other side; a needle actuating means (500) including a needle moving body (510) that moves forward and backward along a main body with the rear end of the drug solution supply line attached thereto, and a drug solution supply port (520) and a needle actuating tool (530) formed on one side and the other side of the needle moving body; A medical snare device characterized by a configuration including a cap (600) that is openably and closably provided on one side of the main body in the area where the needle actuation means moves forward / backward, allowing the needle actuation means to be separated and connected to the main body.

2. A main body (100) having a hollow interior (110), a fixing device (120) formed at the rear end, an upper guide hole (130) formed along the longitudinal direction in front of the fixing device, and a lower guide hole (140) formed along the longitudinal direction in front of the upper guide hole; a rotating body (200) that rotates while guiding a polyp removal line (320) and a drug solution supply line (340) with a needle (330) at its tip in forward and backward directions, the polyp removal line (320) having a loop (310) formed of a core wire that has elasticity when a current flows through it, the loop (310) being rotatably attached to the tip of the main body and that forms an arc when exposed to the outside of the body entry portion at the tip, and the arc overlaps to form a straight line when entering the body entry portion; an internal body entry part (300) that is connected to the rotating body, that is entered into the body while accommodating a polyp removal line and a drug solution supply line, and that exposes the loop or needle to the outside or enters the inside by actuation of a loop actuation means (400) and a needle actuation means (500); a loop operating means (400) including a loop moving body (410) that moves forward / backward along a main body with the rear end of the polyp removal line attached thereto, a current supply port (420) formed on one side of the loop moving body, and a loop operating tool (430) formed on the other side; a needle actuating means (500) including a needle moving body (510) that moves forward and backward along a main body with the rear end of the drug solution supply line attached thereto, and a drug solution supply port (520) and a needle actuating tool (530) formed on one side and the other side of the needle moving body; a cap (600) that is openably provided on one side of the body in the region where the needle actuating means moves forward / backward, and that allows the needle actuating means to be separated and coupled to the body, The cap (600) has elastic control pieces (610) formed on the front and rear thereof, and the inner surface of the control pieces (610) has protrusions (620) that apply pressure to the needle actuation means (500). When the needle (330) is completely exposed outside the body entry part (300), the protrusions (620) on one side are seated in the seating grooves (513) on one side, preventing the needle actuation means (500) from moving arbitrarily. When the needle (330) is completely inserted into the body entry part (300), the protrusions (620) on the other side are seated in the seating grooves (513) on the other side, preventing the needle actuation means (500) from moving arbitrarily.

3. 2. The medical snare device according to claim 1, wherein the fixing device (120) is formed in a ring shape so that a finger can be inserted into the rear end of the body to fix it.

4. 2. The medical snare device according to claim 1, wherein the rotating body (200) comprises a rotating device (210) that is installed so as to rotate freely in place from the tip of the main body, a sleeve (220) that is formed integrally with the rotating device inside the rotating device, through which a polyp removal line and a drug solution supply line pass, and at the tip of which an external tube (350) is connected, and a guide device (230) that is installed behind the sleeve, through which a polyp removal line and a drug solution supply line pass, and at the tip of which an internal tube (360) is connected.

5. 2. The medical snare device according to claim 1, wherein the polyp removal line (320) comprises a hollow, rigid, "-" shaped steel wire (321) extending from the loop operating means to the rotor, a current-carrying wire (322) passing through the hollow steel wire, one end of the wire passing through the steel wire being connected to a current supply port, a loop being formed at the other end of the wire, and a wire protection tube (323) being provided on the wire from the end of the steel wire to the point where the loop is formed.

6. 6. The medical snare device according to claim 1, wherein the loop (310) is connected to the end of the wire (322).

7. The medical snare device of claim 1, characterized in that the medicinal solution supply line (340) comprises a hollow, hard, "-" shaped steel wire (341) from the needle actuation means to the rotor, a medicinal solution tube (342) passing through the steel wire and connected to the medicinal solution supply port, the medicinal solution tube extending from the end of the steel wire (341) to the part where the needle (330) is provided, and a medicinal solution protection tube (343) is provided on the extended medicinal solution tube.

8. 2. The medical snare device according to claim 1, wherein the body entry portion (300) is composed of an inner tube (360) through which a loop and a needle pass while accommodating a polyp removal line and a drug solution supply line, and an outer tube (350) that accommodates a portion of the inner tube at the tip of the rotating body.

9. The medical snare device of claim 1, characterized in that a tip (370) through which a loop and a needle enter and exit is provided at the tip of the body entry portion (300), a loop entry / exit hole (371) and a needle entry / exit hole (372) are formed in the tip, a locking jaw (373) is formed behind the needle entry / exit hole, and a needle guide (374) for guiding the needle is provided in the needle entry / exit hole with the locking jaw formed behind it.

10. The medical snare device according to claim 1, wherein the loop moving body (410) is formed in the shape of a hollow pipe that is fitted to accommodate the main body and moves along the longitudinal direction of the main body.

11. 2. The medical snare device according to claim 1, wherein the loop operating tool (430) is formed in a ring shape on both sides of the loop moving body so that two fingers can be inserted therein.

12. 2. The medical snare device according to claim 1, wherein the current supply port (420) comprises a hollow current supply body (421), a fixed guide port (422) having a threaded hole (423) for fastening the rear end of the polyp removal line at the lower inner part of the current supply body, a fixing hole (424) for receiving and fixing a "-" shaped steel wire (321) at the lower end of the fixed guide port, a fixing screw (425) for fastening the rear end of the polyp removal line being threaded into the threaded hole, and a current supply piece (426) for supplying current being provided in the rear threaded hole of the fixing screw.

13. The medical snare device of claim 1, wherein the needle moving body (510) is formed with a fixture (511) to which a "-" shaped steel wire constituting the drug solution supply line is connected and fixed, a guide portion (512) for guiding the polyp removal line is formed on the upper part of the fixture, and a seating groove (513) is formed on the upper part of the guide portion to seat the protrusion portion (620) of the control piece (610) constituting the cap (600).

14. 2. The medical snare device according to claim 1, wherein the medicinal solution supply port (520) is formed with an insertion hole (521) protruding outward at one side of the needle moving body, through which the inlet of a syringe is inserted to inject the medicinal solution, and the insertion hole is provided with a stopper (522) that opens when the medicinal solution is to be supplied and closes to seal after the medicinal solution has been supplied.

15. 2. The medical snare device according to claim 1, wherein the needle actuator (530) has handles (531) formed on both sides of the needle moving body that can be held by hand.

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