CN220327550U - Esophageal stenosis treatment device - Google Patents

Abstract

The utility model discloses an esophageal stenosis treatment device, which comprises an extrusion part and a fixing part; the fixing part and the extrusion part are both arranged in the esophagus, and the fixing part passes through a narrow section in the esophagus and is propped against the anal side of the narrow section to simultaneously support the inner wall of the esophagus; the extrusion part is abutted against the mouth side of the narrow section and supports the inner wall of the esophagus; forces are present between the fixing part and the pressing part close to each other to achieve the pressing of the stenosis by the pressing part. The extrusion part and the fixing part are mutually fixed and extruded, so that the narrow section in the esophagus can be peeled off under the action of external force.

Description

Esophageal stenosis treatment device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an esophageal stenosis treatment device.

Background

Since the esophagus is in a state that the esophagus wall is stuck and the esophagus passage is closed in a natural state, the occurrence rate of stenosis after the esophagus injury is high. At present, benign stricture of esophagus often occurs in patients who receive early operation of esophageal cancer, when the resection range exceeds 60% of the circumference of a tube, the incidence rate of stricture after operation reaches 70% -80%, and the stricture rate of circumferential resection is more than 100%. Which is easily translated into an refractory stenosis when the stenosis is longer, angulation, irregularities or severe lumen stenosis. Patients with refractory stenosis need to receive dilation or incision treatment every 2-4 weeks on average, and repeated dilation or incision not only increases the risks of bleeding and perforation, but also obviously reduces the quality of life, and causes great pain to the patients.

At present, a bracket is generally used for matching with a drug coating when esophageal stenosis occurs, and referring to the application document of Chinese patent publication No. CN115581539A, a degradable full-lamination anti-displacement esophageal bracket is disclosed, so that the expansion of the esophagus is realized through the bracket, and meanwhile, the treatment of the stenosis is realized through the tectorial membrane of the controlled-release glucocorticoid on the surface layer of the bracket. However, the poor therapeutic effect of the hormone medicine often causes the repetition of hyperplasia of the stenosis, and the treatment of the hormone can cause the difficult healing of the wound surface of the stenosis, which brings more pain to the patient.

On the other hand, other digestive tracts can realize radical treatment of a narrow section through physical treatment, and referring to the application document of Chinese patent publication No. CN115844478A, a magnetic anastomat for treating rectal stenosis under a single anus passage is disclosed, and treatment for removing anastomotic scar is realized through extrusion of a first magnetic anastomotic ring and a second magnetic anastomotic ring on the narrow section. Since the content in the intestinal tract generally plays a supporting role for the intestinal tract, the occurrence probability and the degree of the intestinal tract stenosis after operation are low. The esophagus is basically in a shrunken state when not eating, and the cavity lacks continuous radial supporting force, so that the wound surface is often easy to shrink to cause stenosis after operation, and the diameter of the stenosis of the esophagus is far smaller than that of the stenosis of the intestinal tract, so that the intestinal tract stenosis treatment device is difficult to pass, and the device cannot be applied to the treatment of the esophageal tract stenosis.

Disclosure of Invention

The utility model aims to overcome the technical defect of poor treatment effect of a stent and a drug esophageal stenosis in the prior art, and provides an esophageal stenosis treatment device for physically removing hyperplasia or scar tissues.

The inventor finds that the most common esophageal stenosis is about 5mm along the longitudinal length of the esophagus according to years of clinical practice of endoscopy and big data analysis, and generally does not exceed 10mm, and the stricture is as bright as 25mm; the narrow aperture of the narrow section of the esophagus is 1-2mm, so that the drip of a patient can not enter, and the complaint of solving the problem is strong; on the other hand, the above-mentioned prior art magnetic anastomat treatment device for intestinal stenosis cannot be implanted through the stricture, and the present inventors found that the aperture of the stricture of the esophagus is usually 8-12 mm even after the stricture is dilated, and how to ensure implantation fixation at the anal side of the esophagus with a normal aperture of 18-20 mm is a difficult problem if the device conforming to the size of the stricture passes through the stricture. The inventor aims at the special structure of esophagus and the special parameter condition of esophagus stenosis, and researches and discovers that the scar tissue of the esophagus stenosis can be removed by extrusion necrosis, and designs and provides an esophagus stenosis treatment device.

The utility model solves the technical problems by the following technical scheme:

an esophageal stenosis treatment apparatus comprising an extrusion member and a fixation member; the fixing part and the extrusion part are both arranged in the esophagus, and the fixing part passes through a narrow section in the esophagus and is propped against the anal side of the narrow section to simultaneously support the inner wall of the esophagus; the extrusion part is abutted against the mouth side of the narrow section and supports the inner wall of the esophagus; forces are present between the fixing part and the pressing part close to each other to achieve the pressing of the stenosis by the pressing part.

In this scheme, adopt foretell structural style, fixed part passes through the narrow section under placer's centre gripping to reach the anus side of narrow section, contradict in the inner wall face of esophagus and support simultaneously in the narrow section, make the esophagus can't carry out quick withdrawal under fixed part's support. The extrusion part is abutted against the narrow section while being abutted against the inner wall of the esophagus from the lower part of the placement device to the mouth side of the narrow section. The fixing part and the extrusion part are respectively arranged at two sides of the narrow section, so that the two sides of the narrow section can be completely supported to avoid shrinkage and shrinkage of the esophagus caused by no food. Under the action of the forces of the pressing part and the fixing part approaching each other, the pressing part can move towards the direction of the fixing part and the edge of the pressing part can press the narrow section. The narrow section can be subjected to apoptosis under the action of external force by the extrusion of the extrusion part so as to separate from the inner wall of the esophagus, and the sticking of the esophagus caused by the growth of scars in the recovery process of the inner wall of the esophagus is avoided.

Preferably, the method comprises the steps of,

the length of the fixing part is 10-20mm, and the width of the fixing part is 4-10mm; a first through hole penetrating along the thickness direction of the fixing part is formed in the center of the fixing part, 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 part is 10-12mm, and the width of the fixing part 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 part is 2.5mm; and/or the length of the extrusion part is 10-20mm, and the width of the extrusion part is 10-20mm; the center of the extrusion part is provided with a second through hole penetrating along the thickness direction of the extrusion part, 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 part is 3.5mm.

In this scheme, adopt foretell structural style, because the esophagus can reach 20mm at most after expanding, fixed part needs to rotate and adjust after passing through the narrow section for fixed part length direction's both ends can support the inner wall surface of esophagus. Therefore, the length of the fixing part is 10-20mm, so that the rotated fixing part can support the inner wall of the esophagus, and the retraction of the esophagus is avoided. The esophageal stenosis reaches 10mm after it has been dilated, so that the width of the fixation member can be no more than 10mm as it passes through the stenosis in the length direction. The width direction of the fixing part is set to be 4-10mm, so that the fixing part can smoothly pass through the narrow section. The length and the width of the first through hole are selected so that the side wall of the fixing part can keep enough thickness, so that the esophagus treatment device can not cut the proliferation of a narrow section in the extrusion process, and secondary injury to a human body is avoided. In addition, the extrusion part needs to extrude the hyperplasia of the narrow section and make the hyperplasia fall off and die, so the extrusion part needs to be fully attached to the inner wall of the esophagus, and the extrusion part can fully act on the hyperplasia and has extrusion effect on the hyperplasia. The length and the width of the extrusion part are the same, so that the outer peripheral surface of the extrusion part can be completely attached to the inner wall of the esophagus. The expanded esophagus can retract under the action of the elasticity of the esophagus, so that the length of the fixing part is set to be 10-12mm, and the width of the fixing part is set to be 4-6mm, so that the esophagus can be better acted on.

Preferably, the forces approaching each other are magnetic forces and/or elastic pulling forces.

In this scheme, adopt foretell structural style, the length of the narrow section of esophagus inner wall is 1cm generally, and extrusion part and fixed part set up respectively in the both sides of narrow section, can move towards the direction of fixed part through the effect of magnetic force extrusion part. The distance of 1cm can enable the extrusion part to generate effective force under the action of magnetism, so that the extrusion part can effectively extrude the narrow section. And the squeezing part and the fixing part can be combined and simultaneously fall out of the esophagus after the narrow section is completely squeezed. The distance of 1cm can make elastic traction force effectively act, the extrusion part moves towards the direction of the fixed part under the action of elastic traction, extrusion of the extrusion part to the hyperplasia of the inner wall of the esophagus is realized, and the hyperplasia is subjected to apoptosis under the action of the extrusion part.

Preferably, the fixing part is strip-shaped, the fixing part passes through the narrow section along the length direction of the fixing part, the end part of the fixing part is a smooth cambered surface, and the extruding part is annular-shaped.

The narrow section of needs use sacculus inflation to make the narrow section of esophagus expand after the operation, and the narrow section after the expansion is 10mm generally, and the fixed part is rectangular slice, through passing narrow section along fixed part length direction, avoids fixed part length direction's tip to pass through and is being hindered by the narrow section. The through fixing part enables the two ends of the fixing part to be abutted against the inner wall of the esophagus under the adjustment of the placement device, so that the fixing part can support the esophagus and reach the anal side of the narrow section. The end part of the fixing part is a smooth cambered surface, so that the fixing part can be prevented from scratching the inner wall of the esophagus when being abutted against the inner wall of the esophagus, the outer circumferential surface of the annular sheet-shaped extrusion part is a circular arc, and the friction between the extrusion part and the inner wall of the esophagus can be reduced to protect the inner wall of the esophagus.

Preferably, the fixing part comprises a second iron part and/or a second magnet, preferably a permanent magnet, and the pressing part comprises a first iron part and/or a first magnet, preferably a permanent magnet, the second iron part and the first magnet are mutually attracted, the second magnet and the first iron part are mutually attracted, and the second magnet and the first magnet are mutually attracted.

In this scheme, adopt foretell structural style, the extrusion part with there is magnetism between the fixed part, be the second magnet when the extrusion part is first ironware fixed part, can produce the magnetic force of mutual attraction between second magnet and the first ironware, second magnet and first ironware can be close to each other. When the pressing part is the first magnet fixing part and the second magnet is the second magnet, the first magnet and the second magnet can generate magnetism, and the first magnet and the second magnet can be mutually close. When the pressing part is a first magnet fixing part and is a second iron part, the first magnet can attract the second iron part, so that the fixing part and the pressing part can be mutually close. The extrusion part can be close to the direction of the fixing part under the action of magnetic force, and the narrow section is extruded, so that the narrow section falls off. And after the hyperplasia of the narrow section is dropped off, the extrusion part and the fixing part can be combined under the action of magnetic force, and the combined parts are jointly separated from the esophagus to realize discharge.

Preferably, the securing means comprises an inflatable balloon which passes through the stricture when not inflated and which is inflated against the anal side of the stricture after passing through the stricture.

The inflatable balloon is in a deflated state when not inflated, the width of the stenosed segment after balloon inflation is about 10mm, and the deflated inflatable balloon is passed through the stenosed segment under the operation of the placement device. Inflation of the inflatable balloon is performed after reaching the anal side of the stricture, so that the fixation component can support the esophagus while fixation of the fixation component is achieved against the stricture.

Preferably, the inflatable balloon has iron powder disposed therein, and the pressing member comprises a magnet, preferably a permanent magnet.

In this scheme, adopt foretell structural style, the extrusion part is including permanent magnet or magnet when being provided with the iron powder in the inflatable sacculus, and magnet or permanent magnet can be in the mutual attraction of the iron powder in the sacculus to there is magnetic force between fixed part and the extrusion part, and the extrusion part can be towards the direction motion of inflatable sacculus under the effect of magnetic force. The fixing part is not inflated when passing through the narrow section, and the inflatable balloon of the fixing part is inflated after passing through the narrow section, so that two ends of the fixing part can be abutted against the inner wall of the esophagus to play a supporting role.

Preferably, the esophageal stenosis treatment apparatus further comprises an elastic member, one end of the elastic member is connected to the fixing member, and the other end of the elastic member is connected to the pressing member and tightens the fixing member and the pressing member.

In this scheme, adopt foretell structural style, fixed part and extrusion part set up in narrow section's both sides respectively for the elastic component can be to fixed part and extrusion part carry out the tractive through the connection of elastic component. The pressing part can move towards the fixing part by pulling the elastic part, so that the pressing of the narrow section is realized. The inflatable balloon is arranged on the anal side of the narrow section, the extrusion part is arranged on the mouth side of the narrow section, and the elastic part has retractility. One end of the elastic piece is connected with the inflatable balloon, and the other end of the elastic piece is connected with the extrusion part, so that the inflatable balloon and the extrusion part can be pulled by the elastic piece, and the inflatable balloon and the extrusion part are close to each other under the action of the pulling force. The hyperplasia can gradually fall off to complete the treatment of the esophageal stenosis by the extrusion of the extrusion part to the hyperplasia of the stenosis.

The two ends of the elastic piece are respectively connected to the middle of the length direction of the fixing part and the middle of the length direction of the extrusion part, and the elastic piece can penetrate through the narrow section along the length direction.

In this scheme, adopt foretell structural style, through connecting the both ends of elastic component respectively in the centre department of fixed part and extrusion part, fixed part makes the junction of elastic component and fixed part also can be smooth pass through the narrow section along length direction. And both ends of the elastic piece are connected to the middle parts of the short diameters of the fixing part and the extrusion part, so that both ends of the elastic piece can be positioned on the same horizontal line after being tensioned, and the accuracy of the extrusion direction of the extrusion part is improved.

Preferably, the elastic member is ring-shaped, and the elastic member can be stretched into a strip shape and can pass through a narrow section.

In this scheme, adopt foretell structural style, narrow section's width is 10mm, through drawing the elastic component into the strip for the elastic component of strip can pull the extrusion part and the traction part of narrow section both sides, makes the extrusion part can be moved towards the direction of fixed part through the traction of elastic component. The extrusion part can extrude the narrow section in the in-process of motion, makes the narrow section can automatic apoptosis through the extrusion of extrusion part to accomplish the treatment to the narrow section.

On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.

The utility model has the positive progress effects that: the extrusion part and the fixing part are respectively arranged at two sides of the esophageal stenosis, the extrusion of two sides of the stenosis is realized by the mutual fixation of the extrusion part and the fixing part, and the proliferation of the stenosis is forced to undergo apoptosis by the prevention pressure of physical extrusion contact. Avoiding the use of medicines such as hormone and the like, thereby avoiding repeated oesophageal stenosis caused by side effects and hyperplasia.

Drawings

FIG. 1 is a schematic view showing the structure of an esophageal stenosis treatment apparatus according to an embodiment of the utility model;

FIG. 2 is a schematic view showing the structure of a second esophageal stenosis treatment apparatus according to an embodiment of the utility model;

FIG. 3 is a schematic view showing the structure of a third esophageal stenosis treatment apparatus according to an embodiment of the utility model;

FIG. 4 is a schematic view of a securing member passing through a stricture in accordance with an embodiment of the utility model;

FIG. 5 is a schematic view of an inflatable balloon according to another embodiment of the present utility model passing through a stricture;

fig. 6 is a schematic structural view of an elastic member according to an embodiment of the utility model.

Reference numerals illustrate:

extrusion part 1

First through hole 11

Fixing part 2

Second through hole 21

Inflatable balloon 02

Stenosis 3

Inner wall 31 of esophagus

Elastic member 4

Detailed Description

The utility model is further illustrated by means of the following examples, which are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 1, the present embodiment discloses an esophageal stenosis treatment apparatus, which includes an extrusion member 1 and a fixing member 2; both the fixing part 2 and the extrusion part 1 are arranged in the esophagus. The length of the fixing part 2 is 10mm, the width of the fixing part 2 is 5mm, and the thickness of the fixing part 2 is 2.5mm. A second through hole 21 is opened along the thickness direction of the fixing member, 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 fixing part 2 along the length and width directions is a rounded rectangle, the cross section of the fixing part 2 along the width and thickness directions is a rectangle, and the cross section of the fixing part 2 along the thickness and length directions is a rounded rectangle. The extrusion member 1 was in the form of an annular sheet, the outer diameter of the extrusion member 1 was 10mm, and the thickness of the extrusion member 1 was 3.5mm. A first through hole 11 is provided along the thickness direction of the extrusion member 1, the first through hole 11 is in the shape of a ring, and the diameter of the first through hole 11 is 8mm.

In other embodiments, the length of the fixing element 2 is 10-20mm and the width of the fixing element 2 is 4-10mm; the length of the first through hole 11 is 7-18mm, and the width of the first through hole 11 is 3-8mm. Preferably, the length of the fixing part 2 is 10-12mm, and the width of the fixing part 2 is 4-6mm; the length of the first through hole 11 is 7-8mm, and the width of the first through hole 11 is 3-5mm. The extrusion part 1 is in a ring-shaped sheet shape, the length of the extrusion part 1 is 10-20mm, and the width of the extrusion part 1 is 10-20mm; the diameter of the second through hole 21 is 7-18mm.

As shown in fig. 1 and 4, the fixing member 2 and the pressing member 1 are both disposed in the esophagus. After the esophageal ESD operation, the narrow esophagus is expanded to more than 10mm, the fixing part 2 is in a strip sheet shape, the end part of the fixing part 2 is in a smooth cambered surface, the extruding part 1 is in an annular sheet shape, the fixing part 2 is placed in the downgoing mode by an endoscope, the fixing part 2 is placed in parallel to the esophagus along the length direction and passes through the narrow section 3, the anal side of the narrow section 3 is reached, and the end part of the fixing part 2 along the length direction is prevented from being blocked by the narrow section 3 by passing through the narrow section 3. The fixing part 2 is adjusted through the endoscope, so that the fixing part 2 can be abutted against the narrow section 3 when being abutted against the inner wall of the esophagus with the esophagus cavity along the length direction. Then the extrusion part 1 under the endoscope enables the extrusion part 1 to be perpendicular to the inner wall of the esophagus along the direction of the cross section, the fixing part 2 and the extrusion part 1 are respectively arranged at the two sides of the narrow section 3, and the two sides of the narrow section 3 can be completely supported to avoid shrinkage and shrinkage of the esophagus caused by no food passing.

As shown in fig. 1, the pressing member 1 in this embodiment includes a first iron member, and the fixing member 2 includes a second magnet. Since the fixing member 2 is a second magnet, magnetism exists between the pressing member 1 and the fixing member 2. The second magnet can be fixed to the first iron member, and the pressing member 1 can be moved closer to the fixing member 2 by the magnetic force. The second through hole 21 and the first through hole 11 are communicated with the narrow section 3. The fixing part 2 and the pressing part 1 are respectively arranged at two sides of the narrow section 3. The arrangement of the first through-hole 11 and the second through-hole 21 enables the pressing part 1, the fixing part 2 and the narrow section 3 to communicate. The patient needs to take in nutrient solution and liquid diet after operation, and the esophagus supported by the pressing part 1 and the fixing part 2 needs to have food passing through.

And the pressing member 1 can further include a first magnet, and the fixing member 2 includes a second magnet. Since the fixing member 2 includes the second magnet and the pressing member 1 includes the first magnet, the fixing member 2 and the pressing member 1 can be fixed to each other and brought close to each other by the magnetic force. And the magnetic force between the fixing member 2 and the pressing member 1 can be made larger when both are permanent magnets.

The pressing part 1 furthermore comprises a first magnet and the fixing part 2 comprises a second iron part. Since the pressing member 1 is a first magnet and the fixing member 2 is a second iron member, a force for fixing each other is generated between the pressing member 1 and the fixing member 2 due to the first magnet. The fixation of the first permanent magnet enables the pressing member 1 to press against the narrow section 3.

The length of the stricture 3 of the esophageal wall 31 is usually 1cm, and the pressing member 1 and the fixing member 2 are disposed on both sides of the stricture 3, respectively. A magnetic force is fixed between the fixing member 2 and the pressing member 1, and the pressing member 1 can move toward the fixing member 2 by the magnetic force. The magnitude of the effect of the magnetic force is related to the distance between the two interaction pieces, and the distance of 1cm can enable the extrusion part 1 to generate effective extrusion force under the effect of the magnetic force, so that the extrusion part 1 can effectively extrude the narrow section 3. Under the force of the pressing member 1 and the fixing member 2 approaching each other, the pressing member 1 can move toward the fixing member 2 while the edge of the pressing member 1 can press the narrow section 3. The edge of the pressing part 1 is in contact with the narrow section 3. The fixing part 2 and the pressing part 1 need to be closely attached to the inner wall 31 of the esophagus in the use process, and simultaneously slide along the inner wall 31 of the esophagus. Therefore, the end part of the fixing part 2 and the edge of the extrusion part 1 can generate friction with the inner wall of the esophagus, and the smooth end part can ensure that the fixing part 2 and the extrusion part 1 can not cause abrasion injury to the inner wall 31 of the esophagus when being extruded, thereby avoiding secondary injury. The narrow section 3 can be pressed under the action of external force by the extrusion of the extrusion part 1, and the narrow section 3 is free from blood supply apoptosis under the pressing of the extrusion part 1 so as to be separated from the inner wall 31 of the esophagus, and the narrow section 3 which is pressed to apoptosis does not generate new wound surface on the inner wall of the inner wall 31 of the esophagus, so that no new scar tissue is generated. The sticking of the esophagus due to the growth of the scar in the restoration process of the inner wall 31 of the esophagus is avoided.

Example 2

As shown in fig. 3, the same parts as those in embodiment 1 of the esophageal stenosis treatment apparatus of embodiment 2 will not be described again, and only the different parts will be described. The fixing element 2 comprises an inflatable balloon 02, the inflatable balloon 02 being annular after inflation. The inflatable balloon 02 was in a deflated state when in an uninflated state, the width of the inflatable balloon 02 in the deflated state was 5mm, the outer diameter of the inflated inflatable balloon 02 was 10mm, the inflatable balloon 02 had a second through hole 21 provided therein along the thickness direction, and the diameter of the second through hole 21 was 8mm. The extrusion member 1 was in the form of an annular sheet, the outer diameter of the extrusion member 1 was 10mm, and the thickness of the extrusion member 1 was 3.5mm. A first through hole 11 is formed in the thickness direction of the extrusion part 1, the first through hole 11 is annular, the diameter of the first through hole 11 is 8mm, and the extrusion part 1 is provided with a permanent magnet.

In other embodiments, the inflatable balloon 02 has an outer diameter of 10-20mm and the first through hole 11 has a diameter of 7-18mm.

As shown in FIG. 5, the inflatable balloon 02 is in a deflated state when not inflated, the width of the balloon-expanded stricture 3 is about 10mm, and the deflated inflatable balloon 02 is passed through the stricture 3 under operation of the placement device. Inflation of the inflatable balloon 02 after reaching the anal side of the stricture 3 enables the fixation component 2 to support the esophagus while achieving fixation of the fixation component 2 against the stricture 3. The inflatable balloon 02 is internally provided with iron powder, the inflatable balloon 02 and the extrusion part 1 are respectively arranged at two sides of the narrow section 3, and the iron powder in the inflatable balloon 02 generates interaction attraction force under the attraction of the extrusion part 1. The extrusion part 1 can move towards the direction of the inflatable balloon 02, so that the extrusion part 1 can extrude the narrow section 3, and the narrow section 3 does not have blood supply apoptosis under the compression of the extrusion part 1 so as to separate from the inner wall 31 of the esophagus, and the narrow section 3 which is extruded to die does not generate new wound surface on the inner wall of the inner wall 31 of the esophagus.

In other embodiments, the inflatable balloon 02 may not be internally provided with iron powder in the deflated state. When the inflatable balloon 02 passes through the narrow section 3 and is inflated, iron powder can be flushed into the inflatable balloon 02 through the inflation pipeline at the same time. The inflatable balloon 02 achieves the extrusion of the stenosis 3 under the interaction of the iron powder and the extrusion part 1 made of permanent magnets.

Example 3

As shown in fig. 2 and 6, the same parts as those in embodiment 1 of the esophageal stenosis treatment apparatus of embodiment 3, in which the elastic member 4 is provided between the fixing member 2 and the pressing member 1, one end of the elastic member 4 is connected to the fixing member 2, and the other end of the elastic member 4 is connected to the pressing member 1 and tightens the fixing member 2 and the pressing member 1, will not be described again, and only the different parts will be described. The length of the fixing part 2 is 10mm, the width of the fixing part 2 is 5mm, and the thickness of the fixing part 2 is 2.5mm. A second through hole 21 is opened along the thickness direction of the fixing member, 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 fixing part 2 along the length and width directions is a rounded rectangle, the cross section of the fixing part 2 along the width and thickness directions is a rectangle, and the cross section of the fixing part 2 along the thickness and length directions is a rounded rectangle. The extrusion member 1 was in the form of an annular sheet, the outer diameter of the extrusion member 1 was 10mm, and the thickness of the extrusion member 1 was 3.5mm. A first through hole 11 is provided along the thickness direction of the extrusion member 1, the first through hole 11 is in the shape of a ring, and the diameter of the first through hole 11 is 8mm. The elastic piece 4 is in a spiral ring shape, the elastic piece 4 can be stretched into a strip shape, and two ends of the elastic piece 4 are respectively connected to the middle of the length direction of the fixed part 2 and the length direction of the extrusion part 1.

The fixing part 2 is rotated so that the long axis of the fixing part 2 is parallel to the long axis of the esophagus, the fixing part 2 is adjusted by using the endoscope so that the fixing part 2 can pass through the narrow section 3, and the elastic piece 4 is stretched so that the elastic piece 4 is stretched from a spiral shape to a long strip shape. One end of the elastic member 4 passes through the narrow section 3 along with the middle of the length direction of the fixing member 2, and reaches the anal side of the narrow section 3, so that the long axis of the fixing member 2 and the inner wall 31 of the esophagus are mutually perpendicular to and abutted against the anal side of the narrow section 3 by using endoscopic adjustment. The use of an endoscope lowers the compression member 1 so that the compression member 1 can reach the mouth side of the stenosis 3 and rest against the stenosis 3. The elastic element 4 can retract under the action of no external force, and the retracted elastic element 4 enables the fixing part 2 and the extrusion part 1 to be mutually close and extrude the narrow section 3.

In other embodiments, the components on both sides of the spring may have other shapes, and are not limited herein.

Example 4

As shown in fig. 3, the same parts of the esophageal stenosis treatment apparatus of this embodiment 4 as those of embodiment 3 will not be described again, and only the different parts will be described, the fixing member 2 can be an inflatable balloon 02, one end of the elastic member 4 is connected to the inflatable balloon 02, and the other end of the elastic member 4 is connected to the pressing member 1 and tightens the inflatable balloon 02 and the pressing member 1. The inflatable balloon 02 is arranged on the anal side of the narrow section 3, the extrusion part 1 is arranged on the mouth side of the narrow section 3, and the elastic piece 4 has retractility to pull the inflatable balloon 02 and the extrusion part 1, so that the inflatable balloon 02 and the extrusion part 1 are mutually close under the action of the drawing force. The hyperplasia can gradually fall off by the extrusion of the extrusion part 1 on the hyperplasia of the stenosis 3, so that the treatment of the esophageal stenosis is completed.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. An esophageal stenosis treatment apparatus, comprising an extrusion member and a fixation member;

the length of the fixing part is 10-20mm, and the width of the fixing part is 4-10mm; a first through hole penetrating along the thickness direction of the fixing part is formed in the center of the fixing part, the length of the first through hole is 7-18mm, and the width of the first through hole is 3-8mm;

and/or the length of the extrusion part is 10-20mm, and the width of the extrusion part is 10-20mm; a second through hole penetrating along the thickness direction of the extrusion part is formed in the center of the extrusion part, 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 part is 3.5mm;

the fixing part and the extrusion part are both arranged in the esophagus, and the fixing part passes through a narrow section in the esophagus and is propped against the anal side of the narrow section to simultaneously support the inner wall of the esophagus; the extrusion part is abutted against the mouth side of the narrow section and supports the inner wall of the esophagus;

forces are present between the fixing part and the pressing part close to each other to achieve the pressing of the stenosis by the pressing part.

2. The esophageal stenosis treatment apparatus of claim 1, wherein the fixation means has a length of 10-12mm and a width of 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 part is 2.5mm.

3. The esophageal stenosis treatment apparatus of claim 1, wherein the forces proximate to each other are magnetic and/or elastic pulling forces.

4. The esophageal stenosis treatment apparatus of claim 3, wherein the fixation member is elongated and sheet-like, the fixation member passes through the stenosis along the length of the fixation member, the end of the fixation member is a smooth arcuate surface, and the compression member is annular and sheet-like, the second through-hole is also annular.

5. The esophageal stenosis treatment apparatus of claim 4, wherein the fixation means comprises a second iron member and/or a second magnet, and the compression means comprises a first iron member and/or a first magnet;

the second iron piece attracts each other with the first magnet, the second magnet attracts each other with the first iron piece, and the second magnet attracts each other with the first magnet.

6. The esophageal stenosis treatment apparatus of claim 3, wherein the fixation means comprises an inflatable balloon that passes through the stenosis when uninflated and inflates against the anal side of the stenosis after passing through the stenosis.

7. The esophageal stenosis treatment apparatus of claim 6, wherein the inflatable balloon has iron powder disposed therein, and wherein the compression member comprises a magnet.

8. The esophageal stenosis treatment apparatus of any of claims 1-7, further comprising an elastic member having one end connected to the fixation member and the other end connected to the compression member and tensioning the fixation member and the compression member.

9. The esophageal stenosis treatment apparatus of claim 8, wherein the elastic member has both ends connected to the middle of the fixing member and the pressing member in the longitudinal direction, respectively, and the elastic member is capable of penetrating the stricture in the longitudinal direction.

10. The esophageal stenosis treatment apparatus of claim 8, wherein the elastic member is ring-shaped, the elastic member is stretchable in a strip shape, and the stretched elastic member is passed through the stenosis in a longitudinal direction.