CN116459039A - Gradient tower spring valve anti-reflux esophagus support - Google Patents
Gradient tower spring valve anti-reflux esophagus support Download PDFInfo
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- CN116459039A CN116459039A CN202310466472.5A CN202310466472A CN116459039A CN 116459039 A CN116459039 A CN 116459039A CN 202310466472 A CN202310466472 A CN 202310466472A CN 116459039 A CN116459039 A CN 116459039A
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- 230000000151 anti-reflux effect Effects 0.000 title claims abstract description 39
- 210000003238 esophagus Anatomy 0.000 title claims abstract description 28
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 238000013508 migration Methods 0.000 claims abstract description 12
- 235000014676 Phragmites communis Nutrition 0.000 claims description 25
- 230000000903 blocking effect Effects 0.000 claims description 17
- 230000000670 limiting effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 9
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 3
- 238000012886 linear function Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 claims description 3
- 230000005012 migration Effects 0.000 abstract description 9
- 238000002513 implantation Methods 0.000 abstract description 6
- 206010030172 Oesophageal haemorrhage Diseases 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 10
- 235000013305 food Nutrition 0.000 description 7
- 208000021302 gastroesophageal reflux disease Diseases 0.000 description 7
- 210000004913 chyme Anatomy 0.000 description 6
- 208000000461 Esophageal Neoplasms Diseases 0.000 description 5
- 206010030155 Oesophageal carcinoma Diseases 0.000 description 5
- 201000004101 esophageal cancer Diseases 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 4
- 229940126409 proton pump inhibitor Drugs 0.000 description 3
- 239000000612 proton pump inhibitor Substances 0.000 description 3
- 208000019505 Deglutition disease Diseases 0.000 description 2
- 208000032843 Hemorrhage Diseases 0.000 description 2
- 208000035965 Postoperative Complications Diseases 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 206010008479 Chest Pain Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 210000002318 cardia Anatomy 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 210000003236 esophagogastric junction Anatomy 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000002638 palliative care Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- 238000001356 surgical procedure Methods 0.000 description 1
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- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2002/044—Oesophagi or esophagi or gullets
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Gastroenterology & Hepatology (AREA)
- Prostheses (AREA)
Abstract
The invention belongs to the technical field of medical appliances, and discloses an anti-reflux esophagus support of a gradient tower spring valve, which comprises a support main body, the gradient tower spring valve, a support stop-hanging buckle and a recovery line; the bracket main body consists of supporting ribs and connecting ribs, and the connecting ribs are used for connecting the supporting ribs; the connecting ribs at the two ends of the bracket main body are provided with snap fit rings, and the tail ends of the supporting ribs at the near end of the bracket main body are provided with recovery line fit rings; the gradient tower spring valve is arranged in the bracket main body, and the choke baffle plate, the tower spring main body and the connecting base are mutually extruded when the gradient tower spring valve is compressed, so that the bracket channel can be closed; the bracket hanging stop buckle is matched with the corresponding buckle matching ring to be fixed with the bracket main body and used for effectively stopping and hanging in the standard esophagus bracket; the recovery line sequentially passes through the recovery line matching ring and can be taken out after the upper opening of the bracket main body is contracted. The invention is used for secondary treatment after the implantation of the standard esophageal stent, has good anti-reflux effect, can prevent stent migration and avoid esophageal hemorrhage.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to an anti-reflux esophageal stent.
Background
Esophageal cancer is one of the main malignant tumors which threaten the life health of human beings, and in recent years, the morbidity and mortality of the esophageal cancer are continuously increased, and the complications seriously affect the life quality of patients, so that the patients are greatly painful. Esophageal cancer is mainly manifested by dysphagia, pain and the like, and most patients are advanced in cancer at the initial diagnosis, and miss the best opportunity for radical operation. For patients who cannot undergo surgical treatment, esophageal stent implantation is a relatively mature palliative treatment method for relieving dysphagia and improving their quality of life.
When esophageal stents are implanted, a vast majority of patients experience a number of postoperative complications such as gastroesophageal reflux, stent migration, esophageal bleeding, chest pain, and the like. Since the lesion of esophageal cancer is mostly close to the gastroesophageal junction and the cardia, studies have shown that the incidence of gastroesophageal reflux is even as high as 70% -100%. For postoperative complications such as gastroesophageal reflux, the first-line clinical treatment mostly selects medicines such as proton pump inhibitors, however, patients who partially use proton pump inhibitors still have serious gastroesophageal reflux problems, and even have aspiration to cause death. Over the last two decades, various structures of anti-reflux esophageal stents have been increasingly brought into view, but clinical studies have found that the anti-reflux effects of these stents are quite controversial and even contradictory. Therefore, it is generally not recommended to use anti-reflux esophageal stent implantation directly on patients with esophageal cancer. For those patients with poor efficacy using proton pump inhibitors, the secondary implantation of anti-reflux stent in a previously placed stent is a promising therapeutic option for application and research value.
Disclosure of Invention
The invention aims to solve the technical problems of poor anti-reflux effect, stent migration, esophageal hemorrhage and the like of the existing anti-reflux esophageal stent, and provides a gradient tower reed valve anti-reflux esophageal stent which is used for secondary treatment after the implantation of a standard esophageal stent, has good anti-reflux effect, can prevent stent migration and avoid esophageal hemorrhage.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides an anti-reflux esophagus support of a gradient tower spring valve, which comprises a support main body, the gradient tower spring valve and a support stop-hanging buckle;
the support body consists of support ribs and connecting ribs, a plurality of support ribs are uniformly arranged at intervals along the axial direction of the support, adjacent support ribs are connected with each other through the connecting ribs, and the plurality of connecting ribs are uniformly distributed in the circumferential direction between the adjacent support ribs; each connecting rib positioned at two ends of the bracket main body is provided with a snap fit ring, and the snap fit rings are arranged in the interval spaces between the adjacent supporting ribs;
the gradient tower spring valve is arranged in a supporting rib positioned in the middle section of the bracket main body and comprises a tower spring main body, a flow blocking baffle and a connecting base, and can realize functional opening and closing through axial expansion; the connecting base is relatively close to the proximal end of the bracket main body in the gradient tower spring valve and is used for realizing the fixed connection between the gradient tower spring valve and the bracket main body; a drainage slope is arranged on one side, close to the proximal end of the bracket main body, of the connecting base, and the drainage slope is inclined from the outer edge of the connecting base to the center; the choke flap is relatively close to the distal end of the bracket body in the gradient tower spring valve; a choke slope is arranged on one side of the choke baffle close to the far end of the bracket main body, and the choke slope is inclined from the outer edge of the choke baffle to the center; the two ends of the tower spring main body are respectively and integrally connected with the flow blocking baffle plate and the connecting base, the tower spring main body is spirally wound and gradually reduced in diameter from the connecting base to the flow blocking baffle plate; the elastic modulus of the material of the tower spring main body is gradually decreased from the connecting base to the flow blocking baffle according to a gradient function; when the gradient tower spring valve is compressed, the choke baffle, the tower spring main body and the connecting base are mutually extruded to enable the bracket channel to be closed;
the bracket hanging stop buckles are arranged on the connecting ribs at two ends of the bracket main body and are matched with the corresponding buckle matching rings to fix the bracket hanging stop buckles and the bracket main body with each other; the bracket hanging buckle is integrally formed by a limiting body and a buckle ring; the limiting body comprises a baffle and a group of locating pins arranged on the baffle; the clamping ring comprises a ring rod part and a double straight rod part which are integrally formed, and the end head of the double straight rod part is fixedly connected with the baffle; the outer diameter of the ring rod part of the snap ring is larger than the inner diameter of the snap ring, and the snap ring can pass through the snap ring through compression deformation and recover the original shape; the double straight rod part is arranged in the snap fit ring in a penetrating manner to form a fit relationship with the double straight rod part, and the positioning pins are clamped on two sides of the connecting ribs and used for limiting the rotating movement of the bracket hanging stop buckle relative to the bracket main body.
Further, the supporting ribs are sine-like continuous ring frames integrally formed by positive U-shaped rod bodies and inverted U-shaped rod bodies which are arranged at intervals; the distance between adjacent supporting ribs is equal, and the positions of the positive U-shaped rod body and the inverted U-shaped rod body are respectively in one-to-one correspondence.
Further, the connecting ribs are of straight rod structures and are arranged in a staggered manner in the axial direction.
Further, the axial direction of the snap-fit ring and the recovery wire fit ring is the same as the radial direction of the holder main body.
Further, the outer edge of the connecting base is connected with the supporting ribs in a casting mode, and the supporting ribs in contact with the connecting base are provided with migration preventing waves.
Further, the inclination angles of the drainage slope and the choked flow slope are 5-10 degrees.
Further, the gradient tower spring valve is made of liquid silicone rubber.
Further, the gradient function of the decrease of the elastic modulus of the material of the tower spring body is a linear function or a power function of different power exponentiations n.
Further, the bracket main body and the bracket hanging buckle are both composed of nickel-titanium alloy.
Further, the tail ends of the supporting ribs positioned at the proximal end of the bracket main body are provided with recovery line matching rings; the recycling line sequentially passes through the recycling line matching ring in a clockwise or anticlockwise order; the upper opening of the bracket main body can be contracted and taken out through the recovery line.
The beneficial effects of the invention are as follows:
the gradient reed valve anti-reflux esophagus support adopts the gradient reed valve, and when a patient normally eats, the gradient reed valve is opened downstream to enable swallowed food to pass through; when gastroesophageal reflux occurs in a patient, the graded reed valve is compressed, and the choke flap, the reed body and the connecting base are mutually extruded to seal the stent channel, thereby blocking chyme from passing. The anti-reflux function of the invention can be realized through the material elastic modulus gradient design of the tower spring main body and the flow blocking slope design of the flow blocking baffle.
The gradient tower spring valve anti-reflux esophageal stent is characterized in that the clamping ring penetrates through a metal wire gap of a standard esophageal stent which is implanted into the esophagus of a patient, at the moment, the standard esophageal stent is positioned between a limiting body of a stent stopping buckle and a circular ring part of a clamping ring, namely, a straight line part of the clamping ring penetrates through a stent main body of the stent and the standard esophageal stent which is implanted into the esophagus of the patient, the stent main body of the stent is attached to the standard esophageal stent, and under the combined action of a plurality of stent stopping buckles, the stent is stopped and hung in the standard esophageal stent, so that the anti-migration function of the stent is realized.
The gradient tower spring valve anti-reflux esophagus support is composed of the support main body and the support hanging buckle, has good support and flexibility, and the tail ends of the support main body and the support hanging buckle are designed to be arc structures, so that the damage to esophagus can be better avoided, and the occurrence of esophagus hemorrhage can be avoided.
And fourthly, the gradient tower spring valve anti-reflux esophagus stent can be taken out along with an endoscope after the upper opening of the stent is contracted by using a matched stent extractor or a mouse tooth forceps under the endoscope when the recovery line of the gradient tower spring valve anti-reflux esophagus stent is recovered, and can also be taken out along with a standard esophagus stent which is implanted into the esophagus of a patient.
Drawings
FIG. 1 is a schematic structural view of a gradient coil valve anti-reflux esophageal stent;
FIG. 2 is a schematic deployment view of the stent body in a gradient coil valve anti-reflux esophageal stent;
FIG. 3 is a schematic structural view of a gradient reed valve in a gradient reed valve anti-reflux esophageal stent;
FIG. 4 is a schematic illustration of the material elastic modulus graduating of the body of the turtlet in the gradiented turtlet valve anti-reflux esophageal stent;
FIG. 5 is a schematic diagram of the full cross-sectional configuration of a gradient coil valve in a gradient coil valve anti-reflux esophageal stent;
FIG. 6 is an enlarged schematic view of the portion A in FIG. 1;
fig. 7 is a schematic structural view of stent-stop buckle in a gradient tower-reed valve anti-reflux esophageal stent.
In the above figures:
1-a stent body; 11-supporting ribs; 111-anti-migration ripple; 12-connecting ribs; 121-a snap-fit ring; 122-a recovery line mating ring; 2-gradient reed valve; 21-a tower spring body; 22-a choke flap; 221-a choked flow ramp; 23-connection base 231-drainage ramp; 3, hanging a buckle by a bracket; 31-a limiting body; 32-snap ring; 4-a recovery line.
Detailed Description
For a further understanding of the nature, features, and effects of the present invention, the following examples are set forth to illustrate, and are to be considered in connection with the accompanying drawings:
as shown in fig. 1, the embodiment provides a gradient reed valve anti-reflux esophageal stent, which mainly comprises a stent main body 1, a gradient reed valve 2, a stent hanging buckle 3 and a recovery line 4.
As shown in fig. 2, the bracket body 1 is composed of support ribs 11 and connection ribs 12, and the connection ribs 12 are used to connect the support ribs 11 as a unit.
The support ribs 11 are uniformly arranged at intervals along the axial direction of the support, and the number of the support ribs 11 is set to be 4-8 according to clinical requirements of patients. The structure of each supporting rib 11 is the same, and the supporting ribs are sine-like continuous ring frames which are integrally formed by a positive U-shaped rod body and an inverted U-shaped rod body which are arranged at intervals. The spacing between adjacent support ribs 11 is equal, and the positions of the positive U-shaped rod body and the inverted U-shaped rod body are respectively in one-to-one correspondence.
Adjacent supporting ribs 11 are connected with each other through connecting ribs 12, the connecting ribs 12 are of straight rod-shaped structures, and the connecting ribs 12 are circumferentially and uniformly distributed among the adjacent supporting ribs 11. The number of the connecting ribs 12 between every two adjacent supporting ribs 11 is set to be 3-6 according to the mechanical calculation and customization requirements. In order to better balance the support and flexibility of the bracket, the connecting ribs 12 are arranged in a staggered way in the axial direction, namely, the staggered intervals of two adjacent rows of connecting ribs 12 are 1-2 positive U-shaped rod bodies or inverted U-shaped rod bodies. In addition, each of the connecting ribs 12 at both ends of the bracket body 1 is provided with a snap-fit ring 121, and the snap-fit ring 121 is disposed in the space between the adjacent supporting ribs 11 by avoiding interference with the supporting ribs 11. The tail end of each supporting rib 11 positioned at the proximal end of the bracket main body 1 is provided with a recycling line matching ring 122. The axial direction of the snap-fit ring 121 and the recovery wire fit ring 122 is the same as the radial direction of the holder main body 1.
Wherein, the proximal end of the bracket main body 1 is one end which is close to the oral cavity and the throat of a human body after the bracket is implanted into the esophagus, and the distal end of the bracket main body 1 is one end which is far away from the oral cavity and the throat of the human body after the bracket is implanted into the esophagus.
As shown in fig. 3-5, the gradient reed valve 2 is arranged inside the support rib 11 positioned in the middle section of the bracket main body 1, and comprises a reed main body 21, a flow blocking baffle 22 and a connecting base 23, and can realize functional opening and closing through axial expansion and contraction.
The connecting base 23 is a flat cylindrical structure, and is relatively close to the proximal end of the bracket main body 1 in the gradient tower spring valve 2, so as to realize the fixed connection of the gradient tower spring valve 2 and the bracket main body 1. The outer edge of the connecting base 23 is in casting connection with the supporting ribs 11, the supporting ribs 11 in contact with the connecting base 23 are provided with migration preventing corrugations 111, the migration preventing corrugations 111 are wrapped by the connecting base 23 made of silicone rubber materials to realize fixed connection, and the gradient tower spring valve 2 is prevented from displacing along the axial direction of the support main body 1. The shape of the migration preventing corrugations 111 may be wavy or zigzag, and the bending direction thereof is kept uniform along the circumferential direction of the stent body 1 in order to avoid the migration preventing corrugations 111 interfering with each other. In order to promote the forward drainage effect of the gradient tower-spring valve 2, a drainage slope 231 is arranged on one side of the connecting base 23, which is close to the proximal end of the bracket main body 1, and the drainage slope 231 is inclined from the outer edge of the connecting base 23 to the center, and the inclination angle is preferably 5-10 degrees. The drainage ramp 231 is provided to facilitate the smooth passage of food swallowed by the human body.
The flow-blocking flap 22 is a flat cylinder, which is located relatively close to the distal end of the stent body 1 in the gradient coil valve 2. The larger surface area of the flow-blocking flap 22 better blocks the passage of chyme as chyme flows back and the pressure exerted on the flow-blocking flap 22 due to chyme flow back more effectively promotes the functional closure of the gradient coil valve 2. In order to improve the reverse backflow resistance of the gradient tower-spring valve 2, a flow-blocking slope 221 is arranged on one side of the flow-blocking baffle 22 close to the far end of the bracket main body 1, and the flow-blocking slope 221 is inclined from the outer edge of the flow-blocking baffle 22 to the center, and the inclined angle is preferably 5-10 degrees.
The main body 21 is a spiral surrounding main body, two ends of the main body are integrally connected with the choke flap 22 and the connecting base 23 respectively, and the outer diameter and the inner diameter from the connecting base 23 to the choke flap 22 are reduced gradually. When food swallowed by the patient passes through, the torsion spring body 21 is functionally elongated open in the axial direction so that the food can smoothly pass through the gap of the torsion spring body 21, completing the food swallowing. The cross-sectional shape of the reed body 21 may be rectangular, trapezoidal or oval for compression closure with better sealing when the gradient reed valve 2 is compressed.
The gradient tower spring valve 2 is made of medical addition type liquid silicone rubber. Adopting a gradient reed valve 2, and opening the gradient reed valve 2 downstream when a patient normally eats so as to enable swallowed food to pass; when the patient undergoes gastroesophageal reflux, the graded reed valve 2 is compressed, and the blocking flap 22, the reed body 21 and the connecting base 23 are pressed against each other to close the stent passages, thereby blocking chyme from passing. The elastic modulus of the material of the main body 21 of the tower spring is gradually decreased from the connecting base 23 to the flow blocking piece 22 according to a preset gradient function, so that better anti-backflow closing performance is realized. As a preferred embodiment, the gradient function may be a linear function or a power function of different power exponentiations n, the power exponentiations n of the power function being determined according to the actual functional requirements, for example 0.2, 0.5, 2 and 5.
As shown in fig. 6 to 7, the bracket hanging buckle 3 is provided on each of the connection ribs 12 at both ends of the bracket body 1, and is fixed to the bracket body 1 by being engaged with the corresponding buckle-engagement ring 121. Like the snap-fit ring 121, the bracket catch 3 is also located within the space between adjacent support ribs 11 by avoiding interference with the support ribs 11.
The bracket hanging buckle 3 is formed by integrating a limiting body 31 and a buckle ring 32. The limiting body 31 comprises a baffle and a group of positioning pins arranged on the baffle, and the positioning pins can be in the shape of a cylinder, a cuboid, a triangular prism and the like, so long as the clamping of the group of positioning pins on two sides of the connecting rib 12 can be realized. The snap ring 32 is formed by bonding two ends of a rod-shaped body and bending the middle part, and comprises a bent ring rod part (which can be a circular ring shape or an elliptical ring shape) and a bonded double straight rod part after forming, wherein the end head of the double straight rod part is fixedly connected with the center of a baffle plate of the limiting body 31.
The bracket main body 1 and the bracket hanging buckle 3 are both composed of nickel-titanium alloy, and have good support and flexibility; and, support main part 1 and support stop and hang buckle 3 end all design to the circular arc structure, can avoid the damage to the esophagus better, avoid the emergence of esophagus hemorrhage.
The outer diameter of the ring rod part of the buckle ring 32 made of nickel-titanium alloy material with the shape memory function is larger than the inner diameter of the buckle matching ring 121, the nickel-titanium alloy material passes through the buckle matching ring 121 after compression deformation, and then the ring rod part is restored to the original shape; on one hand, the limiting bracket hanging buckle 3 falls off from the bracket main body 1, and on the other hand, the limiting bracket hanging buckle effectively hangs in the prior standard esophagus bracket. The double straight rod parts of the snap ring 32 are arranged in the snap fit ring 121 in a penetrating manner to form a fit relationship, and the positioning pins of the limiting body 31 are clamped on two sides of the connecting ribs 12 to limit the rotating movement of the bracket hanging stop buckle 3 relative to the bracket main body 1, and the baffle plate of the limiting body 31 can also play a certain limiting role.
The recovery cord 4 is preferably made of nylon yarn which is sequentially passed "one-by-one" through the recovery cord mating ring 122 in a clockwise or counterclockwise order. Thus, when the stent is recovered, the recovery line 4 is grasped under the endoscope by using a matched stent extractor or a mouse tooth forceps, so that the upper opening of the stent main body 1 can be contracted and then taken out along with the endoscope, and the whole stent can be taken out along with the standard esophageal stent which is implanted into the esophagus of a patient.
The invention relates to a gradient tower reed valve anti-reflux esophagus support, which comprises the following using method:
the stent of the present invention is delivered to a standard esophageal stent previously implanted in a patient's esophagus by guiding the stent with an endoscope, and the posture of the stent of the present invention is adjusted so that the snap ring 32 passes through the wire gap of the previous standard esophageal stent, thereby achieving the stopping and hanging of the stent of the present invention in the previous standard esophageal stent. The stent main body 1 is placed in a conveying system in an in-vitro compressed mode, a structural gap of the gradient tower spring valve 2 can allow guide wires to pass through, the guide wires and the conveying system move into a standard esophageal stent which is implanted in the esophagus of a patient, the stent posture of the stent is adjusted to enable the clamping ring 32 to pass through a wire gap of the standard esophageal stent, the stent of the invention is released and unfolded, the standard esophageal stent is positioned between the limiting body 31 of the stent stopping clamp 3 and the circular ring part of the clamping ring 32, namely, a double straight rod part of the clamping ring 32 transversely passes through the stent main body 1 of the invention and the standard esophageal stent which is implanted in the esophagus of the patient, stopping and hanging of the stent in the standard esophageal stent is achieved, and then the conveying system is withdrawn, so that the stent implantation of the stent of the invention is completed.
The bracket main body 1 is attached to the prior standard esophagus bracket, and when a patient normally eats, the gradient tower spring valve 2 is opened downstream, so that swallowed food passes through; when gastroesophageal reflux occurs in the patient, the gradient coil valve 2 is compressed, and the blocking flap 22, coil body 21 and connecting base 23 thereof are pressed against each other to close the stent passages, thereby blocking chyme from passing therethrough. The anti-reflux function of the present invention can be realized by the material elastic modulus gradient design of the main body 21 of the tower spring and the choke slope 221 design of the choke flap 22.
According to the medical requirements, when the stent is required to be recovered, a matched stent extractor or a mouse tooth clamp is used under an endoscope to grasp the recovery line 4 of the stent, so that the upper opening of the stent is contracted and then is taken out along with the endoscope, and the stent can also be taken out along with a standard esophageal stent which is implanted into the esophagus of a patient.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many changes may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are to be construed as falling within the scope of the present invention.
Claims (10)
1. The gradient tower spring valve anti-reflux esophagus support is characterized by comprising a support main body, a gradient tower spring valve and a support stop-hanging buckle;
the support body consists of support ribs and connecting ribs, a plurality of support ribs are uniformly arranged at intervals along the axial direction of the support, adjacent support ribs are connected with each other through the connecting ribs, and the plurality of connecting ribs are uniformly distributed in the circumferential direction between the adjacent support ribs; each connecting rib positioned at two ends of the bracket main body is provided with a snap fit ring, and the snap fit rings are arranged in the interval spaces between the adjacent supporting ribs;
the gradient tower spring valve is arranged in a supporting rib positioned in the middle section of the bracket main body and comprises a tower spring main body, a flow blocking baffle and a connecting base, and can realize functional opening and closing through axial expansion; the connecting base is relatively close to the proximal end of the bracket main body in the gradient tower spring valve and is used for realizing the fixed connection between the gradient tower spring valve and the bracket main body; a drainage slope is arranged on one side, close to the proximal end of the bracket main body, of the connecting base, and the drainage slope is inclined from the outer edge of the connecting base to the center; the choke flap is relatively close to the distal end of the bracket body in the gradient tower spring valve; a choke slope is arranged on one side of the choke baffle close to the far end of the bracket main body, and the choke slope is inclined from the outer edge of the choke baffle to the center; the two ends of the tower spring main body are respectively and integrally connected with the flow blocking baffle plate and the connecting base, the tower spring main body is spirally wound and gradually reduced in diameter from the connecting base to the flow blocking baffle plate; the elastic modulus of the material of the tower spring main body is gradually decreased from the connecting base to the flow blocking baffle according to a gradient function; when the gradient tower spring valve is compressed, the choke baffle, the tower spring main body and the connecting base are mutually extruded to enable the bracket channel to be closed;
the bracket hanging stop buckles are arranged on the connecting ribs at two ends of the bracket main body and are matched with the corresponding buckle matching rings to fix the bracket hanging stop buckles and the bracket main body with each other; the bracket hanging buckle is integrally formed by a limiting body and a buckle ring; the limiting body comprises a baffle and a group of locating pins arranged on the baffle; the clamping ring comprises a ring rod part and a double straight rod part which are integrally formed, and the end head of the double straight rod part is fixedly connected with the baffle; the outer diameter of the ring rod part of the snap ring is larger than the inner diameter of the snap ring, and the snap ring can pass through the snap ring through compression deformation and recover the original shape; the double straight rod part is arranged in the snap fit ring in a penetrating manner to form a fit relationship with the double straight rod part, and the positioning pins are clamped on two sides of the connecting ribs and used for limiting the rotating movement of the bracket hanging stop buckle relative to the bracket main body.
2. The gradient tower reed valve anti-reflux esophageal stent of claim 1, wherein the support ribs are sine-like continuous ring frames integrally formed by a positive U-shaped rod body and an inverted U-shaped rod body which are arranged at intervals; the distance between adjacent supporting ribs is equal, and the positions of the positive U-shaped rod body and the inverted U-shaped rod body are respectively in one-to-one correspondence.
3. The gradient coil valve anti-reflux esophageal stent of claim 1, wherein the connecting ribs are of a straight rod structure and are arranged in a staggered manner in the axial direction.
4. The gradient coil valve anti-reflux esophageal stent of claim 1, wherein the snap-fit ring and the recovery wire-fit ring are oriented in the same axial direction as the stent body.
5. The gradient coil valve anti-reflux esophageal stent of claim 1, wherein the outer edge of the connecting base is in cast connection with the support ribs, and the support ribs in contact with the connecting base are provided with anti-migration corrugations.
6. The gradient coil valve anti-reflux esophageal stent of claim 1, wherein the drainage ramp and the choke ramp are both angled at 5 ° to 10 °.
7. The graded reed valve anti-reflux esophageal stent of claim 1, wherein the graded reed valve is made of liquid silicone rubber.
8. The graded reed valve anti-reflux esophageal stent of claim 1, wherein the graded function of decreasing material modulus of elasticity of the reed body is a linear function or a power function of different power exponentiations n.
9. The gradient coil valve anti-reflux esophageal stent of claim 1, wherein the stent body and stent stop-hang clip are each comprised of a nickel-titanium alloy.
10. The gradient coil valve anti-reflux esophageal stent of claim 1, wherein the distal end of each of said support ribs at the proximal end of said stent body is provided with a recovery wire mating ring; the recycling line sequentially passes through the recycling line matching ring in a clockwise or anticlockwise order; the upper opening of the bracket main body can be contracted and taken out through the recovery line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310466472.5A CN116459039A (en) | 2023-04-27 | 2023-04-27 | Gradient tower spring valve anti-reflux esophagus support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310466472.5A CN116459039A (en) | 2023-04-27 | 2023-04-27 | Gradient tower spring valve anti-reflux esophagus support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116459039A true CN116459039A (en) | 2023-07-21 |
Family
ID=87175197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310466472.5A Pending CN116459039A (en) | 2023-04-27 | 2023-04-27 | Gradient tower spring valve anti-reflux esophagus support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116459039A (en) |
-
2023
- 2023-04-27 CN CN202310466472.5A patent/CN116459039A/en active Pending
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