Medical umbrella-shaped extractor and foreign matter extraction method

Abstract

The invention relates to the field of medical instruments, and particularly discloses a medical umbrella-shaped extractor and a foreign matter extraction method. The medical umbrella-shaped extractor comprises a sheathing canal, the two ends of the sheathing canal are connected with an operation part and an umbrella-shaped part respectively, a wire core connected with the operation part is arranged on the inner side of the sheathing canal, and the operation part is used for pulling the wire core; the umbrella-shaped part comprises an umbrella cover, a folding coil and a connecting wire, the umbrella cover is made of silica gel, one end of the umbrella cover is an open end, the other end of the umbrella cover is a tip end, the tip end is connected with the sheath tube, the folding coil is arranged in the open end, the connecting wire is connected between the folding coil and the wire core, and the folding coil is made of metal. Compared with a traditional snare, the silica gel umbrella surface is better in foreign matter wrapping performance, wider in application range, beneficial to foreign matter taking-out and safer and more reliable to the human body.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a medical umbrella-shaped extractor and a foreign body extracting method. Background Art

[0002] The Department of Gastroenterology mainly uses laparoscopy to diagnose diseases of the esophagus, stomach, intestines, bile duct and other parts. At the same time, it uses more professional laparoscopy to treat digestive tract diseases. Foreign bodies in the upper digestive tract are one of the common clinical emergencies. The types of foreign bodies include fish bones, date pits, poultry bones, etc. Such foreign bodies can easily damage the mucosa and blood vessels and cause complications such as bleeding and perforation, and emergency endoscopic treatment is required.

[0003] Removal devices are commonly used medical devices in gastroenterology to remove foreign bodies from the human body. Traditional removal devices include surgical instruments such as forceps and tweezers, which enter the human body through surgical incisions or natural cavities for removal. However, such devices have problems such as complex operation, great damage to tissues, and difficulty in removal.

[0004] With the continuous development of medical technology, some new foreign body removal instruments have emerged, such as snares, etc. These instruments can simplify the foreign body removal operation to a certain extent, but there are still some shortcomings, such as insufficient wrapping of foreign bodies and easy slipping. Summary of the invention

[0005] In order to improve the wrapping of foreign matter, the present invention provides a medical umbrella-shaped extractor and a foreign matter extracting method.

[0006] In the first aspect, the present invention provides a medical umbrella-shaped extractor adopting the following technical solution: A medical umbrella-shaped extractor comprises a sheath tube, wherein two ends of the sheath tube are respectively connected with an operating part and an umbrella-shaped part, a wire core connected with the operating part is arranged inside the sheath tube, and the operating part is used to pull the wire core; The umbrella-shaped portion includes an umbrella surface, a folding coil and a connecting wire. The umbrella surface is made of silicone. One end of the umbrella surface is an open end and the other end is a pointed end. The pointed end is connected to the sheath. The folding coil is arranged inside the open end. The connecting wire is connected between the folding coil and the wire core. The folding coil is made of metal.

[0007] By adopting the above technical solution, compared with the traditional snare, the silicone umbrella has better wrapping properties for foreign objects, a wider range of applications, is conducive to the removal of foreign objects, and is safer and more reliable for the human body.

[0008] Optionally, an annular cavity is provided inside the open end, a connecting cavity is connected between the annular cavity and the inner cavity of the sheath tube, a guide ring is fixedly connected to the inner wall of one end of the connecting cavity close to the annular cavity, and the guide ring is made of metal; The folding coil includes an arc segment arranged in the annular cavity and a U-shaped segment arranged in the connecting cavity. The U-shaped segment is connected to the arc segment. The U-shaped segment is passed through the inner side of the guide ring. The connecting line is connected to the U-shaped segment.

[0009] The adoption of the technical solution is conducive to the stable contraction or opening of the opening end.

[0010] Optionally, two connecting cavities are symmetrically arranged about the axis center line of the umbrella surface.

[0011] Optionally, an annular protrusion is provided on the inner side of the opening end.

[0012] By adopting the above technical solution, the clamping and wrapping effect of foreign objects is improved.

[0013] Optionally, the operating part includes a fixed seat, an end ring connected to the end of the fixed seat, and a sliding seat slidably connected to the fixed seat, the end of the fixed seat away from the end ring is fixedly connected to the sheath tube, the sliding seat includes a sliding sleeve slidably sleeved on the outside of the fixed seat, and a sliding bar connected to the inside of the sliding sleeve, the fixed seat is provided with a through hole for the sliding bar to pass through and slide, and the sliding bar is fixedly connected to the wire core.

[0014] Optionally, a spring is arranged between the side of the sliding bar facing away from the line core and the inner wall of the fixing seat.

[0015] Optionally, a fixed ring and a movable ring are respectively connected to both sides of the sliding sleeve, a connecting bar is fixedly connected between the movable ring and the sliding bar, the sliding bar is slidably connected to the inner wall of the sliding bar and the sliding direction is set along the length direction of the connecting bar, and the perforated side walls are spaced apart with slots for inserting the sliding bars.

[0016] By adopting the above technical solution, it is convenient to position and limit the position of the sliding seat.

[0017] In a second aspect, the present invention provides a method for removing foreign matter using the following technical solution: A method for removing foreign matter comprises the following steps: The first step is to extend the sheath tube to the location of the foreign body and adjust the position of the umbrella-shaped part so that the foreign body enters the opening end; The second step is to control the operating part to pull the wire core, drive the winding coil to shrink, shrink the opening end, and wrap the foreign body tightly; The third step is to remove the sheath.

[0018] In summary, the present invention has the following beneficial effects: compared with the traditional snare, the silicone umbrella has better wrapping properties for foreign objects, has a wider range of applications, is conducive to the removal of foreign objects, and is safer and more reliable for the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a medical umbrella-shaped extractor according to an embodiment of the present invention; Figure 2 is a cross-sectional schematic diagram of an operating portion of an embodiment of the present invention; Figure 3 is an exploded schematic diagram of a sliding seat according to an embodiment of the present invention; Figure 4 is a front view schematic diagram of a fixing base according to an embodiment of the present invention; Figure 5 is a cross-sectional schematic diagram of an umbrella-shaped portion of an embodiment of the present invention; Figure 6 yes Figure 5 A magnified schematic diagram of the middle A area; Figure 7 2 is a schematic diagram of the structure of the folded coil according to an embodiment of the present invention.

[0020] Explanation of the reference numerals: 1. sheath; 2. operating part; 21. fixed seat; 211. perforation; 212. slot; 22. end ring; 23. sliding seat; 231. sliding sleeve; 232. sliding bar; 233. fixed ring; 234. movable ring; 235. connecting bar; 24. spring; 3. umbrella-shaped part; 31. umbrella surface; 311. open end; 312. tip; 313. annular cavity; 314. connecting cavity; 315. annular protrusion; 32. gathering coil; 321. arc segment; 322. U-shaped segment; 33. connecting wire; 34. guide ring; 4. wire core. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-7 The present invention is described in further detail.

[0022] The embodiments of the present invention disclose a medical umbrella-shaped extractor and a foreign body extracting method.

[0023] Reference Figure 1 , Figure 2 A medical umbrella-shaped extractor comprises a sheath tube 1 for inserting into the human body, a wire core 4 is arranged inside the sheath tube 1, an operating part 2 and an umbrella-shaped part 3 are respectively connected to both ends of the sheath tube 1, the operating part 2 is connected to the wire core 4 and is used to pull the wire core 4 to move, the umbrella-shaped part 3 is connected to the wire core 4, and the umbrella-shaped part 3 is pulled by the wire core 4 to shrink for wrapping foreign matter.

[0024] Reference Figure 2 , Figure 3The operating part 2 includes a fixed seat 21, one end of which is fixedly connected to the sheath tube 1, and an end ring 22 is fixedly connected to the end of the fixed seat 21 away from the sheath tube 1, and the end ring 22 is used for the thumb to pass through. The fixed seat 21 is slidably connected to a sliding seat 23 for pulling the wire core 4, and the sliding seat 23 includes a sliding sleeve 231, a sliding bar 232, a fixed ring 233 and a movable ring 234. The sliding sleeve 231 is slidably connected to the outside of the fixed seat 21, and the fixed ring 233 and the movable ring 234 are respectively arranged on opposite sides of the sliding sleeve 231, and the fixed ring 233 is fixedly connected to the sliding sleeve 231. The sliding bar 232 is slidably connected to the inner wall of the sliding bar 232 and the sliding direction is arranged along the length direction of the connecting bar 235. A connecting bar 235 is fixedly connected between the sliding bar 232 and the movable ring 234, and the connecting bar 235 is slidably penetrated through the side wall of the sliding sleeve 231.

[0025] Reference Figure 2 , Figure 4 The fixed seat 21 is provided with a through hole 211 for the sliding bar 232 to pass through and slide, and a through hole for the connecting bar 235 to pass through and slide. One side of the sliding bar 232 is fixedly connected to the wire core 4, and the other side is fixedly connected to the inner wall of the fixed seat 21 with a spring 24, and the spring 24 applies a thrust to the sliding bar 232. Two slots 212 for the sliding bar 232 to be inserted are arranged at intervals on the side wall of the through hole 211 near the end ring 22.

[0026] When in use, the thumb is passed through the end ring 22, the index finger is passed through the movable ring 234, and the middle finger is passed through the fixed ring 233, and then the sliding seat 23 is pulled close to the end ring 22 to move, so as to overcome the force of the spring 24 to pull the wire core 4 to move, and by spreading the index finger and the middle finger, the movable ring 234 is moved away from the fixed ring 233, and the sliding bar 232 is inserted into the slot 212 to complete the fixation of the wire core 4, avoiding the trouble of foreign objects loosening due to unstable fingers.

[0027] Reference Figure 5 , Figure 6 The umbrella-shaped part 3 includes an umbrella cover 31, a folding coil 32 and a connecting wire 33. The umbrella cover 31 is made of silicone. One end of the umbrella cover 31 is an open end 311 and the other end is a tip 312. The tip 312 is fixedly connected to the sheath tube 1. An annular protrusion 315 is integrally formed on the inner side of the open end 311. The folding coil 32 is arranged inside the open end 311. The connecting wire 33 is fixedly connected between the folding coil 32 and the wire core 4. The folding coil 32 is made of metal. Compared with the traditional snare, the silicone umbrella cover 31 has better wrapping performance for foreign bodies, a wider range of applications, is conducive to the removal of foreign bodies, and is safer and more reliable for the human body. An annular cavity 313 is arranged inside the open end 311. A connecting cavity 314 is connected between the annular cavity 313 and the inner cavity of the sheath tube 1. A guide ring 34 is fixedly connected to the inner wall of one end of the connecting cavity 314 close to the annular cavity 313. The guide ring 34 is made of metal.

[0028] Reference Figure 6 , Figure 7 The connecting cavity 314 is symmetrically provided with two parts about the axis of the umbrella surface 31. The folding coil 32 includes two arc segments 321 provided in the annular cavity 313 and a U-shaped segment 322 provided in the connecting cavity 314. The two ends of the U-shaped segment 322 are respectively fixedly connected with the two arc segments 321. The U-shaped segment 322 is passed through the inner side of the guide ring 34. The connecting wire 33 is fixedly connected with the U-shaped segment 322. When the wire core 4 is pulled, the two connecting wires 33 are driven to move, and then the U-shaped segment 322 is pulled, so that the arc segment 321 gradually changes into the U-shaped segment 322, the U-shaped segment 322 is extended, and the arc segment 321 becomes shorter, so that the opening end 311 is contracted, and the foreign matter is wrapped.

[0029] A method for removing foreign matter comprises the following steps: The first step is to extend the sheath tube 1 to where the foreign body is located, and adjust the position of the umbrella-shaped portion 3 so that the foreign body enters the opening end 311; In the second step, the operating part 2 is controlled to pull the wire core 4, driving the retracting coil 32 to shrink, so that the opening end 311 is reduced and the foreign matter is tightly wrapped; The third step is to remove the sheath tube 1.

[0030] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical umbrella-shaped extractor, comprising a sheath tube (1), characterized in that: The two ends of the sheath tube (1) are respectively connected to an operating portion (2) and an umbrella-shaped portion (3); a wire core (4) connected to the operating portion (2) is arranged inside the sheath tube (1); and the operating portion (2) is used to pull the wire core (4); The umbrella-shaped portion (3) comprises an umbrella surface (31), a folding coil (32) and a connecting wire (33); the umbrella surface (31) is made of silicone material; one end of the umbrella surface (31) is an open end (311) and the other end is a tip (312); the tip (312) is connected to the sheath tube (1); the folding coil (32) is arranged inside the open end (311); the connecting wire (33) is connected between the folding coil (32) and the wire core (4); and the folding coil (32) is made of metal material.

2. The medical umbrella-shaped extractor according to claim 1, characterized in that: An annular cavity (313) is provided inside the opening end (311), a connecting cavity (314) is connected between the annular cavity (313) and the inner cavity of the sheath tube (1), a guide ring (34) is fixedly connected to the inner wall of one end of the connecting cavity (314) close to the annular cavity (313), and the guide ring (34) is made of metal; The retracting coil (32) comprises an arc segment (321) arranged in the annular cavity (313) and a U-shaped segment (322) arranged in the connecting cavity (314); the U-shaped segment (322) is connected to the arc segment (321); the U-shaped segment (322) is passed through the inner side of the guide ring (34); and the connecting line (33) is connected to the U-shaped segment (322).

3. The medical umbrella-shaped extractor according to claim 2, characterized in that: Two connecting cavities (314) are symmetrically arranged about the axis center line of the umbrella surface (31).

4. The medical umbrella-shaped extractor according to claim 2, characterized in that: An annular protrusion (315) is provided inside the opening end (311).

5. The medical umbrella-shaped extractor according to claim 1, characterized in that: The operating portion (2) comprises a fixed seat (21), an end ring (22) connected to the end of the fixed seat (21), and a sliding seat (23) slidably connected to the fixed seat (21); one end of the fixed seat (21) away from the end ring (22) is fixedly connected to the sheath tube (1); the sliding seat (23) comprises a sliding sleeve (231) slidably sleeved on the outside of the fixed seat (21) and a sliding bar (232) connected to the inside of the sliding sleeve (231); the fixed seat (21) is provided with a through hole (211) for the sliding bar (232) to pass through and slide; the sliding bar (232) is fixedly connected to the wire core (4).

6. The medical umbrella-shaped extractor according to claim 5, characterized in that: A spring (24) is provided between the side of the sliding bar (232) facing away from the line core (4) and the inner wall of the fixing seat (21).

7. The medical umbrella-shaped extractor according to claim 6, characterized in that: The sliding sleeve (231) is respectively connected to a fixed ring (233) and a movable ring (234) on both sides; a connecting bar (235) is fixedly connected between the movable ring (234) and the sliding bar (232); the sliding bar (232) is slidably connected to the inner wall of the sliding bar (232) and the sliding direction is set along the length direction of the connecting bar (235); and slots (212) for inserting the sliding bar (232) are arranged at intervals on the side walls of the through hole (211).

8. A method for removing foreign matter, using the medical umbrella-shaped remover according to any one of claims 1 to 7, characterized in that: The steps include: The first step is to extend the sheath tube (1) to where the foreign body is located, and adjust the position of the umbrella-shaped portion (3) so that the foreign body enters the opening end (311); The second step is to control the operating part (2) to pull the wire core (4) to drive the retracting coil (32) to shrink, so that the opening end (311) is reduced and the foreign matter is tightly wrapped; The third step is to remove the sheath tube (1).

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