Esophageal stenosis treatment device

Abstract

The invention discloses an esophageal stenosis treatment device. The esophageal stenosis treatment device comprises an extrusion component and a fixing component, the fixing component and the extruding component are both arranged in the esophagus, and the fixing component passes through a narrow section in the esophagus, abuts against the anus side of the narrow section and supports the inner wall of the esophagus at the same time; the extrusion part abuts against the mouth side of the narrow section and supports the inner wall of the esophagus; and the fixing part and the extrusion part have a force for approaching each other so as to extrude the narrow section through the extrusion part. The squeezing component and the fixing component are mutually fixed and squeezed, so that the narrow section in the esophagus can be peeled off under the action of external force.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for treating esophageal stenosis. Background Art

[0002] Since the esophagus is naturally in a state where the esophageal wall is adhered and the esophageal passage is closed, the incidence of stenosis after esophageal injury is high. At present, benign esophageal stenosis often occurs in patients undergoing early surgery for esophageal cancer. When the resection range exceeds 60% of the circumference of the tube, the incidence of postoperative stenosis is 70% to 80%, and the stenosis rate of circumferential resection is as high as 100%. When the stenosis is long, angular, irregular, or the lumen is severely narrowed, it is easy to turn into refractory stenosis. Patients with refractory stenosis need to undergo dilation or incision treatment every 2 to 4 weeks on average. Repeated dilation or incision not only increases the risk of bleeding and perforation, but also significantly reduces the quality of life, causing great pain to patients.

[0003] At present, when esophageal stenosis occurs, a stent with a drug coating is usually used. For reference, the application document of Chinese patent publication number CN115581539A discloses a degradable, fully bonded, anti-displacement esophageal stent that achieves esophageal expansion through the stent, and at the same time, the stent surface is coated with a controlled release glucocorticoid to achieve treatment of the stenosis. However, the actual treatment effect of hormone drugs is poor, often resulting in repeated hyperplasia of the stenosis, and hormone treatment will make it difficult for the wound surface of the stenosis to heal, causing greater pain to the patient.

[0004] On the other hand, other digestive tracts can achieve radical cure of strictures through physical treatment. For example, the application document of Chinese Patent Publication No. CN115844478A discloses a magnetic stapler for treating rectal strictures through a single anal passage. The first magnetic stapler ring and the second magnetic stapler ring squeeze the stricture to achieve treatment of removing anastomotic scars. Since there are usually contents in the intestine that can support the intestine, the probability and degree of strictures in the intestine after surgery are relatively low. However, since the esophagus is basically in a shriveled state when not eating, and there is a lack of continuous radial support force in the cavity, it is often easy to shrink the wound surface after surgery to cause strictures, and the diameter of the stricture of the esophagus is much smaller than that of the intestine, making it difficult for intestinal stricture treatment devices to pass through and cannot be used in the treatment of esophageal strictures. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the technical defect of poor treatment effect of esophageal stenosis by stents and drugs in the prior art, and to provide an esophageal stenosis treatment device for physically removing hyperplastic or scar tissue.

[0006] According to many years of clinical endoscopic practice and big data analysis, the inventor found that the most common longitudinal length of the esophageal stenosis along the esophagus is about 5mm, generally not more than 10mm, and rarely 25mm; and the stenosis aperture of the esophageal stenosis is 1-2mm, which causes the patient to be unable to swallow even a drop of water, and the main complaint of solving the problem is strong; on the other hand, the esophageal stenosis is severe, and the above-mentioned prior art magnetic stapler treatment device for intestinal stenosis cannot be implanted through the stenosis segment, and the inventor found that the aperture of the esophageal stenosis segment is usually 8-12mm even after expansion, and if the device conforming to the size of the stenosis segment passes through the stenosis segment, how to ensure that it is implanted and fixed on the anal side of the esophagus with a normal aperture of 18-20mm is also a problem. The inventor, in view of the special structure of the esophagus and the specific parameters of esophageal stenosis, found that it is possible to squeeze the necrosis and fall off the esophageal stenosis scar tissue, and designed and provided an esophageal stenosis treatment device for this purpose.

[0007] Therefore, the present invention solves the above technical problems through the following technical solutions:

[0008] A device for treating esophageal stenosis, comprising an extrusion component and a fixing component; both the fixing component and the extrusion component are arranged in the esophagus, the fixing component passes through the stenosis section in the esophagus and abuts against the anal side of the stenosis section while supporting the inner wall of the esophagus; the extrusion component abuts against the oral side of the stenosis section and supports the inner wall of the esophagus; there is a force between the fixing component and the extrusion component to approach each other so as to achieve extrusion of the stenosis section by the extrusion component.

[0009] In this scheme, the above-mentioned structural form is adopted, and the fixing component passes through the narrow section under the clamping of the placement device and reaches the anal side of the narrow section, and contacts the inner wall surface of the esophagus and the narrow section at the same time, so that the esophagus cannot be quickly retracted under the support of the fixing component. The extrusion component passes through the bottom of the placement device to the mouth side of the narrow section, and contacts the inner wall of the esophagus and the narrow section at the same time. The fixing component and the extrusion component are respectively arranged on both sides of the narrow section, which can fully support the two sides of the narrow section to prevent the esophagus from shrinking and shrunken due to the lack of food passing. Under the action of the force between the extrusion component and the fixing component, the extrusion component can move toward the direction of the fixing component and the edge of the extrusion component can squeeze the narrow section. Through the extrusion of the extrusion component, the narrow section can produce apoptosis under the action of external force and thus detach from the inner wall of the esophagus, avoiding the adhesion of the esophagus due to the growth of scars on the inner wall of the esophagus during the recovery process.

[0010] Preferably, the length of the fixing component is 10-20mm, and the width of the fixing component is 4-10mm; a first through hole is provided at the center of the fixing component and passes through the fixing component in the thickness direction, the length of the first through hole is 7-18mm, and the width of the first through hole is 3-8mm; preferably, the length of the fixing component is 10-12mm, and the width of the fixing component is 4-6mm; the length of the first through hole is 7-8mm, the width of the first through hole is 3-5mm, and the thickness of the fixing component is 2.5mm; and / or, the length of the extrusion component is 10-20mm, and the width of the extrusion component is 10-20mm; a second through hole is provided at the center of the extrusion component and passes through the extrusion component in the thickness direction, the length of the second through hole is 7-18mm, the width of the second through hole is 7-18mm, and the thickness of the extrusion component is 3.5mm.

[0011] In this scheme, the above-mentioned structural form is adopted. Since the esophagus can reach up to 20mm after expansion, the fixed component needs to be rotated and adjusted after passing through the narrow section, so that the two ends of the fixed component in the length direction can be against the inner wall surface of the esophagus. Therefore, setting the length of the fixed component to 10-20mm can enable the fixed component to support the inner wall of the esophagus after rotation to avoid the retraction of the esophagus. The narrow section of the esophagus will reach 10mm after expansion, so when the fixed component passes through the narrow section along the length direction, the width of the fixed component must be no more than 10mm. The width direction of the fixed component is set to 4-10mm so that the fixed component can pass through the narrow section smoothly. The length and width of the first through hole are selected so that the side wall of the fixed component can retain sufficient thickness, so that the esophageal treatment device will not cause cutting to the hyperplasia of the narrow section during the extrusion process, avoiding secondary damage to the human body. In addition, the extrusion component needs to squeeze the hyperplasia of the narrow section and make the hyperplasia fall off and die, so it is necessary to increase the complete fit between the extrusion component and the inner wall of the esophagus, so that the extrusion component can fully act on the hyperplasia and produce an extrusion effect on the hyperplasia. The length and width of the extrusion component are the same so that the outer circumference of the extrusion component can be completely fitted with the inner wall of the esophagus. Since the expanded esophagus will retract under the action of esophageal elasticity, setting the length of the fixing component to 10-12 mm and the width to 4-6 mm can better act on the esophagus.

[0012] Preferably, the force bringing the two closer together is a magnetic force and / or an elastic pulling force.

[0013] In the present solution, the above-mentioned structural form is adopted, and the length of the narrow section of the inner wall of the esophagus is usually 1 cm. The squeezing component and the fixing component are respectively arranged on both sides of the narrow section, and the squeezing component can move toward the direction of the fixing component through the action of magnetic force. The distance of 1 cm enables the squeezing component to generate effective force under the action of magnetism, so that the squeezing component can effectively squeeze the narrow section. And when the narrow section is completely squeezed, the squeezing component and the fixing component can be combined and fall out of the esophagus at the same time. The distance of 1 cm enables the elastic pulling force to act effectively, and the squeezing component moves toward the direction of the fixing component under the action of elastic traction, so that the squeezing component squeezes the hyperplasia of the inner wall of the esophagus, so that the hyperplasia is apoptotic under the action of the squeezing component.

[0014] Preferably, the fixing component is in the shape of a long sheet, the fixing component passes through a narrow section along the length direction of the fixing component, the end of the fixing component is a smooth arc surface, and the extrusion component is in the shape of an annular sheet.

[0015] The stricture section needs to be dilated with a balloon after surgery to expand the stricture section of the esophagus. The stricture section after expansion is generally 10 mm. The fixing component is in the form of a long sheet. By passing through the stricture section along the length direction of the fixing component, the ends of the fixing component in the length direction are prevented from being obstructed by the stricture section during passage. After passing through, the fixing component is adjusted by the placement device so that both ends of the fixing component can contact the inner wall of the esophagus, so that the fixing component can support the esophagus and reach the anal side of the stricture section at the same time. The end of the fixing component is a smooth arc surface that can protect the fixing component from scratching the inner wall of the esophagus when it contacts the inner wall of the esophagus. The outer circumference of the annular sheet-shaped extrusion component is an arc. The setting of the arc can reduce the friction between the extrusion component and the inner wall of the esophagus and protect the inner wall of the esophagus.

[0016] Preferably, the fixing component includes a second iron piece and / or a second magnet, preferably a permanent magnet, and the extrusion component includes a first iron piece and / or a first magnet, preferably a permanent magnet, the second iron piece and the first magnet are attracted to each other, the second magnet and the first iron piece are attracted to each other, and the second magnet and the first magnet are attracted to each other.

[0017] In this solution, the above-mentioned structural form is adopted, and there is magnetism between the extrusion component and the fixed component. When the extrusion component is the first iron piece and the fixed component is the second magnet, a magnetic force of mutual attraction will be generated between the second magnet and the first iron piece, and the second magnet and the first iron piece will be close to each other. When the extrusion component is the first magnet and the fixed component is the second magnet, both the first magnet and the second magnet can generate magnetism, and the first magnet and the second magnet can be close to each other. When the extrusion component is the first magnet and the fixed component is the second iron piece, the first magnet can attract the second iron piece, so that the fixed component and the extrusion component can be close to each other. Under the action of the magnetic force, the extrusion component can approach the direction of the fixed component and squeeze the narrow segment so that the narrow segment falls off. And after the hyperplasia and fall off of the narrow segment, the extrusion component and the fixed component can be merged under the action of the magnetic force, and after merging, they are separated from the esophagus together to be discharged.

[0018] Preferably, the fixing member comprises an inflatable balloon, which passes through the stenosis section when not inflated, and is inflated to abut against the anal side of the stenosis section after passing through the stenosis section.

[0019] The inflatable balloon is in a deflated state when not inflated. The width of the stenosis segment after the balloon is expanded is about 10 mm. The deflated inflatable balloon is passed through the stenosis segment under the operation of the placement device. After reaching the anal side of the stenosis segment, the inflatable balloon is inflated so that the fixing component can support the esophagus and abut against the stenosis segment to fix the fixing component.

[0020] Preferably, iron powder is arranged in the inflatable balloon, and the extrusion component includes a magnet, preferably a permanent magnet.

[0021] In this solution, the above-mentioned structural form is adopted, and the inflatable balloon is provided with iron powder, and the extrusion component includes a permanent magnet or a magnet, which can attract the iron powder in the balloon, so that there is a magnetic force between the fixed component and the extrusion component, and the extrusion component can move toward the inflatable balloon under the action of the magnetic force. The fixed component is not inflated when passing through the narrow section, and the inflatable balloon of the fixed component is inflated after passing through the narrow section, so that the two ends of the fixed component can contact the inner wall of the esophagus to play a supporting role.

[0022] Preferably, the esophageal stenosis treatment device further comprises an elastic component, one end of the elastic component is connected to the fixing component, and the other end of the elastic component is connected to the extrusion component to tighten the fixing component and the extrusion component.

[0023] In the present solution, the above-mentioned structural form is adopted, and the fixing component and the extrusion component are respectively arranged on both sides of the narrow segment. Through the connection of the elastic component, the elastic component can pull the fixing component and the extrusion component. The pulling of the elastic component enables the extrusion component to move toward the fixing component, thereby achieving the extrusion of the narrow segment. The inflatable balloon is arranged on the anal side of the narrow segment, and the extrusion component is arranged on the oral side of the narrow segment. The elastic component has retractability. One end of the elastic component is connected to the inflatable balloon, and the other end is connected to the extrusion component. Therefore, the setting of the elastic component can also pull the inflatable balloon and the extrusion component, so that the inflatable balloon and the extrusion component are close to each other under the action of the pulling force. By squeezing the hyperplasia of the narrow segment by the extrusion component, the hyperplasia can gradually fall off to complete the treatment of esophageal stenosis.

[0024] The two ends of the elastic component are respectively connected to the middle of the fixing component and the extrusion component in the length direction, and the elastic component can penetrate the narrow section along the length direction.

[0025] In this solution, the above-mentioned structural form is adopted, and by connecting the two ends of the elastic component to the middle of the fixed component and the extrusion component respectively, the fixed component passes through the narrow section along the length direction so that the connection between the elastic component and the fixed component can also pass through the narrow section smoothly. In addition, both ends of the elastic component are connected to the middle of the short diameter of the fixed component and the extrusion component, so that the two ends of the elastic component can be located on the same horizontal line after being tightened, thereby improving the accuracy of the extrusion direction of the extrusion component.

[0026] Preferably, the elastic component is annular and can be stretched into a strip shape and can pass through a narrow section.

[0027] In this solution, the above-mentioned structural form is adopted, the width of the stenosis section is 10 mm, and the elastic component is stretched into a strip shape, so that the strip elastic component can pull the squeezing component and the traction component on both sides of the stenosis section, and the squeezing component can move toward the fixing component through the pulling of the elastic component. The squeezing component can squeeze the stenosis section during the movement, and the squeezing of the squeezing component can make the stenosis section automatically die, thereby completing the treatment of the stenosis section.

[0028] The positive and progressive effect of the present invention is that the extrusion component and the fixing component are respectively arranged on both sides of the esophageal stenosis segment, and the mutual fixation of the extrusion component and the fixing component realizes the extrusion of both sides of the stenosis segment, and the hyperplasia of the stenosis segment is prevented from apoptosis by physical extrusion contact. The use of drugs such as hormones is avoided, thereby avoiding the repeated side effects and hyperplasia that cause multiple esophageal stenosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic diagram of the structure of an esophageal stenosis treatment device according to Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of an esophageal stenosis treatment device according to Embodiment 2 of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of a device for treating esophageal stenosis according to Embodiment 3 of the present invention;

[0032] Figure 4 A schematic diagram of a fixing component passing through a narrow section according to an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of an inflatable balloon passing through a stenosis segment according to another embodiment of the present invention;

[0034] Figure 6 It is a schematic structural diagram of an elastic component according to an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] Extrusion Part 1

[0037] The first through hole 11

[0038] Fixed part 2

[0039] The second through hole 21

[0040] Inflatable balloon 02

[0041] Stenosis 3

[0042] Esophageal lining 31

[0043] Elastic component 4 DETAILED DESCRIPTION

[0044] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0045] Example 1

[0046] like Figure 1The present embodiment discloses a device for treating esophageal stenosis, which includes an extrusion component 1 and a fixing component 2; both the fixing component 2 and the extrusion component 1 are arranged in the esophagus. The length of the fixing component 2 is 10 mm, the width of the fixing component 2 is 5 mm, and the thickness of the fixing component 2 is 2.5 mm. A second through hole 21 is provided along the thickness direction of the fixing component, the second through hole 21 is rectangular, the length of the second through hole 21 is 7 mm, and the width of the second through hole 21 is 4 mm. The cross section of the fixing component 2 along the length and width direction is a rounded rectangle, the cross section of the fixing component 2 along the width and thickness direction is a rectangle, and the cross section of the fixing component 2 along the thickness and length direction is a rounded rectangle. The extrusion component 1 is an annular sheet, the outer diameter of the extrusion component 1 is 10 mm, and the thickness of the extrusion component 1 is 3.5 mm. A first through hole 11 is provided along the thickness direction of the extrusion component 1, the first through hole 11 is annular, and the diameter of the first through hole 11 is 8 mm.

[0047] In other embodiments, the length of the fixing member 2 is 10-20 mm, and the width of the fixing member 2 is 4-10 mm; the length of the first through hole 11 is 7-18 mm, and the width of the first through hole 11 is 3-8 mm. Preferably, the length of the fixing member 2 is 10-12 mm, and the width of the fixing member 2 is 4-6 mm; the length of the first through hole 11 is 7-8 mm, and the width of the first through hole 11 is 3-5 mm. The extrusion member 1 is an annular sheet, the length of the extrusion member 1 is 10-20 mm, and the width of the extrusion member 1 is 10-20 mm; the diameter of the second through hole 21 is 7-18 mm.

[0048] like Figure 1 , Figure 4 As shown, both the fixing component 2 and the squeezing component 1 are arranged in the esophagus. After the esophageal ESD surgery, the narrow esophagus is expanded to more than 10 mm. The fixing component 2 is in the shape of a long strip, and the end of the fixing component 2 is a smooth curved surface. The squeezing component 1 is in the shape of a ring-shaped sheet. The fixing component 2 is inserted antegrade under endoscopy. When the fixing component 2 is inserted, it is parallel to the esophagus in the length direction and passes through the narrow section 3 to reach the anal side of the narrow section 3. By passing through the narrow section 3 along the length direction of the fixing component 2, it is avoided that the end of the fixing component 2 in the length direction is blocked by the narrow section 3 when passing. The fixing component 2 is adjusted through the endoscope so that the fixing component 2 can be disposed along the length direction and contact the esophageal cavity with the inner wall of the esophagus while contacting the narrow section 3. Then, the squeezing component 1 is pressed under the endoscope so that the squeezing component 1 can be perpendicular to the inner wall of the esophagus along the direction of the cross section. The fixing component 2 and the squeezing component 1 are respectively arranged on both sides of the narrow section 3, which can fully support both sides of the narrow section 3 to prevent the esophagus from shrinking and shrinking due to the lack of food passing.

[0049] like Figure 1As shown, in this embodiment, the extrusion component 1 includes a first iron piece, and the fixed component 2 includes a second magnet. Since the fixed component 2 is the second magnet, there is magnetism between the extrusion component 1 and the fixed component 2. The second magnet can fix the first iron piece, and under the action of the magnetic force, the extrusion component 1 can approach the direction of the fixed component 2. The second through hole 21 and the first through hole 11 are connected to the narrow section 3. The fixed component 2 and the extrusion component 1 are respectively arranged on both sides of the narrow section 3. The arrangement of the first through hole 11 and the second through hole 21 enables the extrusion component 1, the fixed component 2 and the narrow section 3 to be connected. Postoperative patients need to take nutrient solution and liquid food, and the esophagus propped up by the extrusion component 1 and the fixed component 2 needs food to pass through.

[0050] Furthermore, the extrusion component 1 can also include a first magnet, and the fixing component 2 can include a second magnet. Since the fixing component 2 includes the second magnet and the extrusion component 1 includes the first magnet, the fixing component 2 and the extrusion component 1 can be fixed to each other and brought close to each other under the action of magnetic force. Furthermore, when both the fixing component 2 and the extrusion component 1 are permanent magnets, the magnetic force between them can become greater.

[0051] In addition, the extrusion component 1 includes a first magnet, and the fixing component 2 includes a second iron piece. Since the extrusion component 1 is the first magnet and the fixing component 2 is the second iron piece, a mutually fixing force is generated between the extrusion component 1 and the fixing component 2 due to the action of the first magnet. The fixing of the first permanent magnet enables the extrusion component 1 to achieve extrusion of the narrow section 3.

[0052] The length of the narrow section 3 of the inner wall 31 of the esophagus is usually 1 cm, and the squeezing component 1 and the fixing component 2 are respectively arranged on both sides of the narrow section 3. There is a mutually fixed magnetic force between the fixing component 2 and the squeezing component 1, and the squeezing component 1 can move toward the direction of the fixing component 2 through the action of the magnetic force. The magnitude of the magnetic force is related to the distance between the two interacting parts. The distance of 1 cm can enable the squeezing component 1 to generate an effective squeezing force under the action of the magnetism, so that the squeezing component 1 can effectively squeeze the narrow section 3. Under the action of the force of the squeezing component 1 and the fixing component 2 approaching each other, the squeezing component 1 can move toward the direction of the fixing component 2 and the edge of the squeezing component 1 can squeeze the narrow section 3. The edge of the squeezing component 1 is in contact with the narrow section 3. During use, the fixing component 2 and the squeezing component 1 need to be close to the inner wall 31 of the esophagus and slide along the inner wall 31 of the esophagus. Therefore, the end of the fixing component 2 and the edge of the squeezing component 1 will produce friction with the inner wall of the esophagus. The smooth end setting can prevent the fixing component 2 and the squeezing component 1 from causing wear and damage to the inner wall 31 of the esophagus during squeezing, thereby avoiding secondary damage. The extrusion of the extrusion component 1 allows the stenosis segment 3 to be compressed under the action of external force. The stenosis segment 3 is deprived of blood supply and dies under the pressure of the extrusion component 1, thereby separating from the esophageal inner wall 31. Since the extruded stenosis segment 3 does not produce a new wound surface on the inner wall of the esophagus 31, no new scar tissue will be generated. This avoids the esophagus from being adhered to due to the growth of scars on the esophageal inner wall 31 during the recovery process.

[0053] Example 2

[0054] like Figure 3 As shown, the same parts of the esophageal stenosis treatment device of this embodiment 2 as those in embodiment 1 are no longer described, and only the different parts are described. The fixing component 2 includes an inflatable balloon 02, which is annular after being inflated. The inflatable balloon 02 is in a deflated state when not inflated, and the width of the deflated balloon 02 is 5 mm. The outer diameter of the inflatable balloon 02 after being inflated is 10 mm. There is a second through hole 21 arranged along the thickness direction in the inflatable balloon 02, and the diameter of the second through hole 21 is 8 mm. The extrusion component 1 is in the shape of an annular sheet, and the outer diameter of the extrusion component 1 is 10 mm, and the thickness of the extrusion component 1 is 3.5 mm. A first through hole 11 is provided along the thickness direction of the extrusion component 1, and the first through hole 11 is annular, and the diameter of the first through hole 11 is 8 mm. The extrusion component 1 is a permanent magnet.

[0055] In other embodiments, the outer diameter of the inflatable balloon 02 is 10-20 mm, and the diameter of the first through hole 11 is 7-18 mm.

[0056] like Figure 5As shown, the inflatable balloon 02 is in a deflated state when not inflated, and the width of the narrow segment 3 after the balloon is expanded is about 10 mm. The deflated inflatable balloon 02 is passed through the narrow segment 3 under the operation of the placement device. After reaching the anal side of the narrow segment 3, the inflatable balloon 02 is inflated, so that the fixing component 2 can support the esophagus and abut against the narrow segment 3 to fix the fixing component 2. Iron powder is arranged in the inflatable balloon 02, and the inflatable balloon 02 and the extrusion component 1 are respectively placed on both sides of the narrow segment 3. The iron powder in the inflatable balloon 02 generates a mutual attraction under the attraction of the extrusion component 1. The extrusion component 1 can move toward the direction of the inflatable balloon 02, so that the extrusion component 1 can squeeze the narrow segment 3. The narrow segment 3 is apoptotic due to lack of blood supply under the pressure of the extrusion component 1, and thus detaches from the inner wall 31 of the esophagus. Due to the extrusion of the apoptotic narrow segment 3, no new wound surface will be generated on the inner wall of the inner wall 31 of the esophagus.

[0057] In other embodiments, the inflatable balloon 02 may not have iron powder inside when it is in a deflated state. When the inflatable balloon 02 passes through the narrow section 3 and is inflated, the iron powder can be flushed into the inflatable balloon 02 through the inflation pipeline during inflation. The inflatable balloon 02 achieves extrusion of the narrow section 3 under the interaction between the iron powder and the extrusion component 1 made of a permanent magnet.

[0058] Example 3

[0059] like Figure 2 , Figure 6 As shown, the same parts of the esophageal stenosis treatment device of this embodiment 3 as those of the embodiment 1 are not described again, and only the different parts are described. In this embodiment, there is an elastic component 4 between the fixed component 2 and the extrusion component 1, one end of the elastic component 4 is connected to the fixed component 2, and the other end of the elastic component 4 is connected to the extrusion component 1 and tightens the fixed component 2 and the extrusion component 1. The length of the fixed component 2 is 10mm, the width of the fixed component 2 is 5mm, and the thickness of the fixed component 2 is 2.5mm. A second through hole 21 is opened along the thickness direction of the fixed component, the second through hole 21 is rectangular, the length of the second through hole 21 is 7mm, and the width of the second through hole 21 is 4mm. The cross section of the fixed component 2 along the length and width direction is a rounded rectangle, the cross section of the fixed component 2 along the width and thickness direction is a rectangle, and the cross section of the fixed component 2 along the thickness and length direction is a rounded rectangle. The extrusion component 1 is an annular sheet, the outer diameter of the extrusion component 1 is 10mm, and the thickness of the extrusion component 1 is 3.5mm. A first through hole 11 is provided along the thickness direction of the extrusion component 1. The first through hole 11 is annular and has a diameter of 8 mm. The elastic component 4 is a spiral annular shape and can be stretched into a strip shape. Both ends of the elastic component 4 are respectively connected to the middle of the length direction of the fixing component 2 and the extrusion component 1.

[0060] The fixing component 2 is rotated so that the long axis of the fixing component 2 is parallel to the long axis of the esophagus, and the fixing component 2 is adjusted using an endoscope so that the fixing component 2 can pass through the narrow segment 3, and the elastic component 4 is stretched so that the elastic component 4 is stretched from a spiral shape to a long strip. One end of the elastic component 4 passes through the narrow segment 3 along with the middle of the length direction of the fixing component 2, and reaches the anal side of the narrow segment 3. The fixing component 2 is adjusted using an endoscope so that the long axis of the fixing component 2 and the inner wall 31 of the esophagus are perpendicular to each other and abut against the anal side of the narrow segment 3. The squeezing component 1 is lowered using an endoscope so that the squeezing component 1 can reach the oral side of the narrow segment 3 and abut against the narrow segment 3. The elastic component 4 will retract in the absence of external force, and the retracted elastic component 4 allows the fixing component 2 and the squeezing component 1 to approach each other and squeeze the narrow segment 3.

[0061] In other embodiments, the components on both sides of the spring may be in other shapes, which are not limited here.

[0062] Example 4

[0063] like Figure 3 As shown, the same parts of the esophageal stenosis treatment device of this embodiment 4 as those in embodiment 3 are not described again, and only the different parts are described. The fixing component 2 can be an inflatable balloon 02, one end of the elastic component 4 is connected to the inflatable balloon 02, and the other end of the elastic component 4 is connected to the extrusion component 1 and tightens the inflatable balloon 02 and the extrusion component 1. The inflatable balloon 02 is arranged on the anal side of the stricture segment 3, and the extrusion component 1 is arranged on the oral side of the stricture segment 3. The elastic component 4 has retractility and can pull the inflatable balloon 02 and the extrusion component 1, so that the inflatable balloon 02 and the extrusion component 1 are close to each other under the action of the pulling force. By squeezing the hyperplasia of the stricture segment 3 by the extrusion component 1, the hyperplasia can gradually fall off to complete the treatment of esophageal stenosis.

[0064] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A device for treating esophageal stenosis, characterized in that: The esophageal stenosis treatment device comprises a squeezing component and a fixing component; The fixing component and the extrusion component are both arranged in the esophagus, the fixing component passes through the narrow section in the esophagus and abuts against the anal side of the narrow section while supporting the inner wall of the esophagus; the extrusion component abuts against the oral side of the narrow section and supports the inner wall of the esophagus; There is a force between the fixing component and the pressing component that approaches each other so as to realize pressing of the narrow section by the pressing component.

2. The esophageal stenosis treatment device according to claim 1, characterized in that: The length of the fixing component is 10-20 mm, and the width of the fixing component is 4-10 mm; a first through hole penetrating along the thickness direction of the fixing component is provided at the center of the fixing component, the length of the first through hole is 7-18 mm, and the width of the first through hole is 3-8 mm; preferably, the length of the fixing component is 10-12 mm, and the width of the fixing component is 4-6 mm; the length of the first through hole is 7-8 mm, the width of the first through hole is 3-5 mm, and the thickness of the fixing component is 2.5 mm; And / or, the length of the extrusion component is 10-20 mm, and the width of the extrusion component is 10-20 mm; a second through hole is provided at the center of the extrusion component and passes through the extrusion component in the thickness direction, the length of the second through hole is 7-18 mm, the width of the second through hole is 7-18 mm, and the thickness of the extrusion component is 3.5 mm.

3. The esophageal stenosis treatment device according to claim 1 or 2, characterized in that: The force that brings them closer to each other is a magnetic force and / or an elastic pulling force.

4. The esophageal stenosis treatment device according to claim 3, characterized in that: The fixing component is in the shape of a long sheet, the fixing component passes through a narrow section along the length direction of the fixing component, the end of the fixing component is a smooth arc surface, and the extrusion component is in the shape of an annular sheet, and the second through hole is also annular.

5. The esophageal stenosis treatment device according to claim 4, characterized in that: The fixing part comprises a second iron piece and / or a second magnet, preferably a permanent magnet, and the pressing part comprises a first iron piece and / or a first magnet, preferably a permanent magnet; The second iron piece and the first magnet attract each other, the second magnet and the first iron piece attract each other, and the second magnet and the first magnet attract each other.

6. The esophageal stenosis treatment device according to claim 3, characterized in that: The fixing member comprises an inflatable balloon, which passes through the stenosis section when not inflated, and is inflated to abut against the anal side of the stenosis section after passing through the stenosis section.

7. The esophageal stenosis treatment device according to claim 6, characterized in that: The inflatable balloon is provided with iron powder, and the extrusion component comprises a magnet, preferably a permanent magnet.

8. The esophageal stenosis treatment device according to any one of claims 1 to 7, characterized in that: The esophageal stenosis treatment device also includes an elastic component, one end of which is connected to the fixing component, and the other end of which is connected to the extrusion component to tighten the fixing component and the extrusion component.

9. The esophageal stenosis treatment device according to claim 8, characterized in that: The two ends of the elastic component are respectively connected to the middle of the fixing component and the extrusion component in the length direction, and the elastic component can penetrate the narrow section along the length direction.

10. The esophageal stenosis treatment device according to claim 8, characterized in that: The elastic component is annular and can be stretched into a strip shape. The stretched elastic component can pass through the narrow section along the length direction.

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