Medical snare tube

Abstract

The present invention relates to a medical snare tube for removing polyps on organs of the body, the improved snare tube structure facilitating forward and backward movement of a medicinal solution hose provided with an injection needle and a wire provided with a snare when the injection needle or snare for polyp removal is being selectively inserted or pulled out. The snare tube is structured with the medicinal solution hose guide channel and wire guide channel divided as two channels, divided along the internal longitudinal direction of the tube, and a plurality of rows of arc-shaped protruding bands are provided along the longitudinal direction of the inner circumferential surface of both medicinal solution hose guide channel and wire guide channel.

Description

Medical snare tube

[0001] The present invention relates to a medical snare tube for removing polyps from internal organs, wherein the tube structure of the medical snare is improved to allow for smooth forward and backward movement of the drug hose on which the needle is installed and the wire on which the snare is formed when selectively withdrawing or retracting the needle or snare for removing the polyps.

[0002] Generally, medical snares are used to extract and remove polyps that have formed in human organs; when a polyp is discovered within the body, it is extracted and removed using a snare formed on the snare's wire through the snare's control unit.

[0003] The method of extracting and removing polyps using the medical snare described above involves supplying a medication to the discovered polyp through a needle, and when the polyp swells due to the supply of the medication, placing a snare around the swollen polyp and supplying a high-frequency current to extract and remove the polyp.

[0004] A conventional medical snare that removes polyps in the manner described above is the snare disclosed in Korean Patent Publication No. 10-2023-0044087, and its composition is as follows.

[0005] - under -

[0006] Each operating member for operating the snare operating means (400) and the needle operating means (500) is separately formed on the same line on both rear sides of the main body (100) having a fixing member formed at the rear end, so as to operate the snare operating means and the needle operating means separately.

[0007] A guide hole is formed along the longitudinal direction of the above main body to guide the snare operating means and the needle operating means, and a rotating body coupling part is formed at the front.

[0008] A polyp removal line with a snare installed at the tip and a drug supply line with a needle installed at the tip pass through the above-mentioned rotating body coupling part, and a rotating body (200) that rotates freely from the rotating body coupling part is installed.

[0009] The above-mentioned rotating body is equipped with an internal entry part (300) that enters the body while accommodating the polyp removal line and the liquid supply line, and exposes the snare or needle to the outside or enters the inside according to the operation of the snare operating means and the needle operating means.

[0010] The above snare operating means is integrally formed with a snare moving body that moves back and forth along the main body while the rear end of the polyp removal line is installed, a current supply port that supplies current to the snare, and a snare operating port that moves the snare moving body.

[0011] The above needle operating means (500) comprises a needle moving body having a liquid supply port formed therein to which the rear end of a liquid supply line is connected and installed, an extension part connected and installed to the needle moving body, and a needle operating part formed therein to move the needle moving body.

[0012] In the above configuration, since the polyp removal line and the drug supply line are located within the body entry part (300) that enters the body and accommodates the polyp removal line and the drug supply line, a problem has arisen in which the removal of the snare and the needle is not smooth due to mutual friction during the process of withdrawing the snare and the needle, thereby causing a hindrance to the polyp removal procedure.

[0013] In addition, related prior art includes KR10-2593196, KR10-2476766, and KR10-2301831.

[0014] The present invention was devised to resolve the above-mentioned problems in consideration of them, and its purpose is,

[0015] First, to prevent friction caused by mutual contact between the drug hose with a needle installed at the tip and the wire with a loop formed at the tip inside the tube inserted into an internal organ, the drug hose guide and the wire guide are formed separately along the internal length of the tube.

[0016] Second, the invention provides a medical snare tube in which multiple protruding strips are formed on the inner surface of the separated liquid hose guide and wire guide, thereby minimizing friction with the liquid hose guide and wire guide when the liquid hose and wire move back and forth, so that the injection needle or wire can be easily drawn out or inserted into the tip of the tube.

[0017] The configuration of the means for solving the problem of the present invention to achieve the above objective is,

[0018] A medical snare tube comprising a drug hose (20) equipped with a needle (21) for supplying drug solution to a polyp that has formed in the body, a wire (30) formed with a snare (31) for extracting the polyp, and a tube (10) that guides forward / backward movement while accommodating the drug hose and the wire,

[0019] The above tube (10) is,

[0020] A chemical hose guide (11) that guides forward / backward movement while accommodating the chemical hose and a wire guide (12) that guides forward / backward movement while accommodating the wire are formed separately along the internal longitudinal direction of the tube.

[0021] It is formed such that multiple rows of protruding bands (13) are formed along the longitudinal direction of the inner surface of the separated liquid hose guide and wire guide so that friction between the liquid hose and the liquid hose guide and between the wire and the wire guide is minimized when the liquid hose and the wire move back and forth.

[0022] The medical snare tube according to the present invention, having the configuration described above, has the effect of facilitating the procedure for removing polyps in the body by forming a drug hose guide and a wire guide along the internal longitudinal direction of the tube so that friction does not occur due to mutual contact between a drug hose with a needle installed at the tip and a wire with a loop formed at the tip inside the tube inserted into an internal organ as described in the purpose above, and by forming multiple protruding bands on the inner circumference of the separated drug hose guide and wire guide so that friction with the drug hose guide and wire guide is minimized when the drug hose and wire move back and forth, thereby allowing the needle or wire to be easily withdrawn or inserted into the tip of the tube.

[0023] FIG. 1 is a perspective view of a medical snare tube according to the present invention applied to a snare.

[0024] FIG. 2 is a perspective view of a medical snare tube according to the present invention with a needle withdrawn.

[0025] FIG. 3 is a perspective view of a medical snare tube according to the present invention with the noose withdrawn.

[0026] FIG. 4 is an enlarged cross-sectional view of a medical snare tube according to the present invention,

[0027] FIG. 5 is an enlarged cross-sectional view of a medical snare tube according to the present invention with a wire and a drug hose positioned therein.

[0028] The present invention relates to a medical snare tube for removing polyps from internal organs, wherein the tube structure of the medical snare is improved to allow for smooth forward and backward movement of the drug hose on which the needle is installed and the wire on which the snare is formed when selectively withdrawing or retracting the needle or snare for removing the polyps. An embodiment thereof is described below with reference to the attached drawings.

[0029] - under -

[0030] The medical snare tube configuration of the present invention is as shown in FIGS. 1 to 5.

[0031] A medical snare tube comprising a drug hose (20) equipped with a needle (21) for supplying drug solution to a polyp that has formed in the body, a wire (30) formed with a snare (31) for extracting the polyp, and a tube (10) that guides forward / backward movement while accommodating the drug hose and the wire,

[0032] The above tube (10) is,

[0033] A chemical hose guide (11) that guides forward / backward movement while accommodating the chemical hose and a wire guide (12) that guides forward / backward movement while accommodating the wire are formed separately along the internal longitudinal direction of the tube.

[0034] It is formed such that multiple rows of protruding bands (13) are formed along the longitudinal direction of the inner surface of the separated liquid hose guide and wire guide so that friction between the liquid hose and the liquid hose guide and between the wire and the wire guide is minimized when the liquid hose and the wire move back and forth.

[0035] In the medical snare tube configuration according to the present invention described above, the tube (10) is configured to enter an internal organ while receiving a drug hose (20) with a needle (21) installed at the tip to supply drug to the polyp and inflate the size of the polyp, and a wire (30) with a snare (31) formed at the tip to extract the inflated polyp.

[0036] In the internal longitudinal direction of the tube (10) configured as described above, the wire guide (11) and the liquid hose guide (12) are formed separately while maintaining a constant distance.

[0037] And in the wire guide (11) and the liquid hose guide (12) formed by being divided into two parts, a liquid hose (20) with an injection needle (21) installed at the tip and a wire (30) with a noose (31) formed at the tip are located.

[0038] The reason the wire guide (11) and the liquid hose guide (12) are formed separately along the longitudinal direction inside the tube (10) is to prevent the liquid hose (20) and the wire (30) from coming into contact with each other and causing friction when the liquid hose (20) and the wire (30) move forward and backward according to the operation of the liquid hose operating part (40) and the wire operating part (50) installed on the snare when extracting polyps that have occurred in the body with the snare (31) or the needle (21) and selectively pulling out or pulling in the needle (21) or the snare (21).

[0039] A plurality of protruding bands (13) are formed along the longitudinal direction of the inner circumference of the liquid hose guide (11) and the wire guide (12) that perform the above-mentioned function. The reason for this is to minimize contact between the liquid hose (20) and the liquid hose guide (12) and between the wire (30) and the wire guide (12) so that the injection needle (21) and the snare (31) can be selectively withdrawn and retracted while the liquid hose (20) and the wire (30) move back and forth, thereby minimizing friction and allowing the injection needle (21) or the snare (31) to be easily and smoothly retracted or retracted from the front end of the tube (10).

[0040] One embodiment of the protruding band (13) having the above-mentioned function is preferably formed as an arc-shaped protruding band as shown in FIGS. 4 and 5, for which point contact is formed between the liquid hose (20) and the liquid hose guide (12) and between the wire (30) and the wire guide (12), thereby minimizing friction when the liquid hose (20) and the wire (30) move forward and backward.

[0041] The arc-shaped protruding band (13) described above is the most preferred embodiment of the present invention, and in addition, any protruding band (13) of three or more angles that can reduce friction when the liquid hose (20) and the wire (30) move back and forth is possible.

[0042] Meanwhile, when withdrawing the injection needle (21), the liquid hose (20) is advanced, and when withdrawing the snare (31), the liquid hose (20) is retracted so that the injection needle (21) is inserted into the liquid hose guide (12), and then the wire (30) is advanced to withdraw the snare (31).

[0043] When withdrawing the snare (31) in reverse, the wire (30) is advanced, and when withdrawing the injection needle (21), the wire (30) is retracted so that the snare (31) is drawn into the wire guide (11), and then the medicine hose (20) is advanced to withdraw the injection needle (21).

[0044] And the above-mentioned medicine hose (20) is formed with a hollow interior along the longitudinal direction of the medicine hose (20) to supply medicine supplied from the medicine supply unit (70) to the injection needle (21).

[0045] As shown in FIG. 4, the above liquid hose (20) or wire (30) has a plurality of arc-shaped protrusion strips (13) formed on each liquid hose guide (11) and wire guide (12) that are separated into two parts, and as shown in FIG. 5, the liquid hose (20) and wire (30) are positioned on the liquid hose guide (11) and wire guide (12) where the plurality of arc-shaped protrusion strips (13) are formed, and since the plurality of arc-shaped protrusion strips (13) support multiple places on the outer surface of the liquid hose (20) and wire (30), the liquid hose (20) and wire (30) maintain straightness, and also exhibit the advantage of minimizing friction between the liquid hose guide (11) and the liquid hose (20) and between the wire guide (12) and the wire (30).

[0046] Therefore, due to the smooth forward and backward movement of the above-mentioned medicine hose (20) and wire (30), the injection needle (21) installed at the tip of the medicine hose (20) and the snare (31) formed at the tip of the wire (30) can be easily withdrawn or inserted, which has the advantage of allowing the polyp removal procedure to be performed safely, quickly, and accurately.

[0047] The principle of the forward / backward movement of the above liquid hose (20) and wire (30) is that when the liquid hose operating mechanism (40) is operated forward as shown in FIG. 1, the liquid hose (20) moves forward together with it, and as shown in FIG. 2, the injection needle (21) is drawn out to the outside of the tip of the tube (10), that is, to the outside of the tip of the liquid hose guide (11), and when the liquid hose operating mechanism (40) is operated in the reverse direction, the injection needle (21) is drawn into the inside of the liquid hose guide (11).

[0048] Also, when the wire operating mechanism (50) is operated forward, the wire (30) moves forward together with it, and the noose (31) is drawn out to the outside of the tip of the tube (10), that is, to the outside of the tip of the wire guide (12), and when the wire operating mechanism (50) is operated in the opposite direction, the noose (31) is drawn into the inside of the wire guide (12).

[0049] The liquid hose (20) with a needle (21) installed at the tip as described above and the tube (10) guiding the liquid hose (20) and the wire (30) are preferably made of extrusion-molded nylon. This is because nylon is resistant to friction, has superior tensile strength compared to other fibers, is lightweight, does not change in strength even when wet, possesses elasticity and thermal insulation, and has high strength, thereby enabling the liquid hose (20) to move straight within the liquid hose guide (11) and the wire (30) to move straight within the wire guide (12), while simultaneously minimizing friction.

[0050] In addition, the material of the wire (30) on which the above-mentioned noose (31) is formed can be any metal material that conducts electricity and has elasticity, but most preferably stainless steel.

[0051] And the above-mentioned noose (31) has a portion of the tip of the wire (30) bent to form an annular ring, and the bent tip is fixed to the wire (30) where the annular ring begins, so that the annular ring shape is continuously maintained after the annular ring is pulled out to the outside of the wire guide (12).

[0052] The reason the material of the wire (30) is made of stainless steel among the metal materials that conduct electricity is that when current is supplied to the current supply unit (60) shown in FIGS. 1 to 3, the supplied current is transmitted to the snare (31) through the wire (30), and when the polyp is extracted with the snare (31), the polyp site to be extracted is electrically supported and extracted, thereby exhibiting the advantage of minimizing bleeding in the area where the polyp is extracted.

[0053] In addition, if the material of the wire (30) is made of stainless steel having elasticity, the straightness of the wire is maintained due to the characteristics of stainless steel, and the shape of the snare (31) formed at the tip is deformed (folded) when it is inserted into the wire guide (12), and when the snare (31) is withdrawn from the wire guide (12), the deformed shape is restored to maintain an annular ring shape so that the polyp can be stably extracted.

[0054] The wire (30) that performs the above function is formed by twisting seven strands of separated solid wire together to form a primary wire, and then twisting seven strands of the primary wire together to form the primary wire. The reason for this is to ensure that when the wire (30) is moved forward and backward to insert or withdraw the noose (31) while maintaining a circular outer diameter that is as close as possible to the shape of the circular wire guide (12), bending does not occur during the forward and backward movement and the wire (30) maintains straightness.

[0055] In addition, it is preferable that the wire (30) have an outer diameter of 0.5-1 mm, for the reason that the wire (30) maintains straightness without bending in the middle during the process of moving forward and backward along the wire guide (12), and at the same time, the outer diameter of the wire (30) is formed to be smaller than the inner diameter of the wire guide (12) so that the forward and backward movement of the wire (30) can be easily and smoothly carried out within the wire guide (12).

[0056] In addition, the above liquid hose guide (11) and wire guide (12) are preferably formed in a circular shape, and the inner diameter of the circular liquid hose guide (11) and wire guide (11) is maintained at 1.1-1.3 mm. This is so that the liquid hose (20) and wire (30) can move smoothly forward and backward within each of the liquid hose guide (11) and wire guide (12).

[0057] The liquid hose guide (11) and wire guide (12) described above are arranged to be positioned on both sides centered on the center of the tube (10) as shown in FIGS. 4 and 5, and it is preferable that the spacing (D) between the liquid hose guide (11) and wire guide (12) arranged on both sides, the spacing (D') between one side of the tube (10) and the outer edge of the liquid hose guide (11), and the spacing (D") between the other side of the tube (10) and the outer edge of the wire guide (12) are formed to maintain the same spacing.

[0058] The reason is to maintain the same thickness between the liquid hose guide (11) and the wire guide (12), between one side of the tube (10) and the outer edge of the liquid hose guide (11), and between the other side of the tube (10) and the outer edge of the wire guide (12), so that even if bending occurs to one side while the liquid hose (20) and the wire (30) move forward and backward along the liquid hose guide (11) and the wire guide (12), the outer shape of the tube (10) is not deformed and can withstand it stably.

[0059] It is preferable to maintain a spacing of 0.1-0.3 mm between the chemical hose guide (11) and the wire guide (12) to perform the above-mentioned function, between one side of the tube (10) and the outer edge of the chemical hose guide (11), and between the other side of the tube (10) and the outer edge of the wire guide (12).

[0060] If the above spacing is maintained at less than 0.1 mm, in the process of moving the liquid hose (20) or wire (30) forward or backward to withdraw or retract the injection needle (21) or snare (31), if bending occurs inside the liquid hose guide (11) or wire guide (12), the strength to withstand such bending is weak, so the tube (10) may be damaged or its external shape may be deformed.

[0061] This is because if it exceeds 0.3mm, the outer diameter of the tube (10) must be increased, and the tube (10) with the increased outer diameter may cause a problem of increased resistance when the tube (10) enters an organ inside the body.

[0062] In addition, it is preferable to maintain the outer diameter of the above-mentioned liquid hose (20), on which a syringe needle (21) is installed at the tip, at 0.7-1 mm, so that the liquid hose (20) can move smoothly forward and backward along the above-mentioned liquid hose guide (11) of 1.1-1.3 mm.

[0063] In addition, the above liquid hose guide (11) and wire guide (12) are preferably formed in a circular shape having multiple rows of arc-shaped protrusions (13), the reason being that the liquid hose (20) and wire (30) are circular as shown in FIG. 5, so that they can be aligned with the liquid hose (20) and wire (30) to ensure smooth forward and backward movement.

[0064] As explained above, the medical snare tube according to the present invention has the advantage of facilitating the procedure for removing polyps in the body by forming a drug hose guide and a wire guide along the internal longitudinal direction of the tube so that friction does not occur due to mutual contact between the drug hose with a needle installed at the tip and the wire with a loop formed at the tip inside the tube inserted into an internal organ as described in the effect above, and by forming multiple arc-shaped protruding bands on the inner circumference of the separated drug hose guide and wire guide so that friction with the drug hose guide and wire guide is minimized when the drug hose and wire move back and forth, thereby allowing the needle or wire to be easily withdrawn or inserted into the tip of the tube.

[0065] [Explanation of the symbol]

[0066] 10: Tube 11: To the liquid hose guide

[0067] 12: With wire guide 13: Protruding band

[0068] 20 : Medicine hose 21 : Syringe needle

[0069] 30 : Wire 31 : Noose

[0070] D: Spacing between the liquid hose guide and the wire guide

[0071] D': Spacing between one side of the tube and the outer edge of the liquid hose guide

[0072] D": Spacing between the other side of the tube and the outer edge via the wire guide

Claims

1. A medical snare tube comprising a drug hose (20) equipped with a needle (21) for supplying drug solution to a polyp that has formed in the body, a wire (30) having a snare (31) for extracting the polyp, and a tube (10) that guides forward / backward movement while accommodating the drug hose and the wire, The above tube (10) is, A chemical hose guide (11) that guides forward / backward movement while accommodating the chemical hose and a wire guide (12) that guides forward / backward movement while accommodating the wire are formed separately along the internal longitudinal direction of the tube. A medical snare tube characterized by having multiple rows of protruding bands (13) formed along the longitudinal direction of the inner surface of the separated liquid hose guide and wire guide so that friction between the liquid hose and the liquid hose guide and between the wire and the wire guide is minimized when the liquid hose and the wire move back and forth.

2. In Paragraph 1, The above tube (10) and the medicine hose (20) are medical snare tubes characterized by being extruded from nylon.

3. In Paragraph 1, A medical snare tube characterized in that the material of the above wire (30) is a metal that conducts electricity and has elasticity.

4. In Paragraph 1 or 3, A medical snare tube characterized in that the material of the wire (30) is stainless steel.

5. In Paragraph 1 or 3, The above wire (30) is a medical snare tube characterized by being formed by twisting seven strands of separated solid wire together to form a primary wire, and twisting the seven strands of the primary wire together.

6. In Paragraph 1 or 3, The above wire (30) is a medical snare tube characterized by being formed to have an outer diameter of 0.5-1 mm.

7. In Paragraph 1 or 6, A medical snare tube characterized by the inner diameter of the above-mentioned liquid hose guide and wire guide being 1.1-1.3 mm.

8. In Paragraph 1, The above-mentioned liquid hose guide (11) and wire guide (12) are arranged to be positioned on both sides centered on the center of the tube, and the spacing (D) between the liquid hose guide and wire guide arranged on both sides, the spacing (D') between one side of the tube and the outer edge of the liquid hose guide, and the spacing (D") between the other side of the tube and the outer edge of the wire guide are formed to maintain the same spacing.

9. In Paragraph 8, A medical snare tube characterized by the above-mentioned spacing being 0.1-0.3mm.

10. In Paragraph 1, A medical snare tube characterized by the outer diameter of the above-mentioned liquid hose being 0.7-1 mm.

11. In Paragraph 1, The above-mentioned medicine hose guide and wire guide are characterized by being formed in a circular shape having multiple rows of arc-shaped protrusions (13), in a medical snare tube.

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