WO2020238167A1 - Endoprothèse de drainage tissulaire - Google Patents

Endoprothèse de drainage tissulaire Download PDF

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Publication number
WO2020238167A1
WO2020238167A1 PCT/CN2019/126069 CN2019126069W WO2020238167A1 WO 2020238167 A1 WO2020238167 A1 WO 2020238167A1 CN 2019126069 W CN2019126069 W CN 2019126069W WO 2020238167 A1 WO2020238167 A1 WO 2020238167A1
Authority
WO
WIPO (PCT)
Prior art keywords
drainage
tissue
drainage tube
flange
supporting
Prior art date
Application number
PCT/CN2019/126069
Other languages
English (en)
Chinese (zh)
Inventor
孙亿民
李玉茜
冷德嵘
潘长网
李常青
李宁
奚杰峰
韦建宇
Original Assignee
南微医学科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南微医学科技股份有限公司 filed Critical 南微医学科技股份有限公司
Priority to DE212019000425.3U priority Critical patent/DE212019000425U1/de
Priority to ES202190010U priority patent/ES1285656Y/es
Publication of WO2020238167A1 publication Critical patent/WO2020238167A1/fr
Priority to AU2021102675A priority patent/AU2021102675A4/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
    • A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B2017/1139—Side-to-side connections, e.g. shunt or X-connections
    • 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
    • A61F2/06—Blood vessels
    • A61F2/07—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
    • A61F2002/041—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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/005—Rosette-shaped, e.g. star-shaped
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter

Definitions

  • This application relates to the technical field of minimally invasive medical devices, in particular to a tissue drainage stent.
  • the purpose of the present application is to provide a tissue drainage stent to solve to a certain extent the technical problem of poor drainage of the tissue drainage stent in the prior art and greater stimulation to the tissue wall surface.
  • tissue drainage stent which includes a drainage tube and a first flange arranged at one end of the drainage tube;
  • the first flange includes a plurality of first supporting wings; one end of the first supporting wing is connected to the drainage tube, and the other end extends in a direction away from the centerline of the drainage tube; and a plurality of the first supporting wings The supporting wings are arranged along the circumference of the drainage tube.
  • the first supporting wing has a flat sheet shape or a curled sheet shape.
  • the number of the first support wings is three, the three first support wings are arranged at equal intervals along the circumference of the drainage tube, and the three first support wings are opposite to the drainage tube.
  • the center line is distributed in rotational symmetry.
  • a second flange is provided on the end of the drainage tube away from the first flange
  • the second flange has a continuous flanging curl structure or a bulging spherical structure along the circumferential direction of the drainage tube; or,
  • the second flange includes a plurality of second supporting wings; one end of the second supporting wing is connected with the drainage tube, and the other end extends in a direction away from the centerline of the drainage tube; and a plurality of the second supporting wings The supporting wings are arranged along the circumference of the drainage tube.
  • the second supporting wing has a flat sheet shape, a curled sheet shape or a convex spherical shape.
  • the extension length of the first flange and the second flange in the radial direction of the drainage tube is 0.3-2 times the outer diameter of the drainage tube.
  • At least part of the first supporting wing and at least part of the second supporting wing are provided with an X-ray developer.
  • a recovery line is provided on the second flange.
  • the drainage tube, the first flange, and the second flange are all silk-like woven structures, and are all covered with a biological leakproof membrane.
  • the tissue drainage stent of the present application is configured to be inserted into the body under an endoscope to perform an anastomosis and drainage between tissues.
  • the drainage tube is hollow to form a drainage lumen, one end of which is connected to the target tissue, and the other end is connected to the anastomotic tissue. Drainage between the organization and the anastomosing organization. Since the target tissue (such as pancreatic pseudocyst) decreases during the drainage process, the cyst wall may fit and block the connection between the drainage tube and the target tissue, resulting in poor drainage between the tissues. Therefore, in the present application, one end of the drainage tube corresponding to the target tissue is provided with a first flange that can be expanded outward.
  • the first flange includes a plurality of first support wings that are expanded outward, and the first support wings can affect the target tissue.
  • the wall is supported to prevent the wall of the target tissue from sticking to block the connection between the drainage tube and the target tissue during the drainage process, thereby ensuring the smooth drainage between the tissues and improving the treatment effect; at the same time, multiple first supporting wings are shared Supporting the tissue wall can make the wall face uniform force and reduce the irritation to the tissue.
  • FIG. 1 is a schematic structural diagram of a tissue drainage stent provided by an embodiment of the application
  • FIG. 2 is a schematic structural diagram of the first flange of the tissue drainage stent provided by an embodiment of the application;
  • FIG. 3 is a schematic diagram of another structure of the first flange of the tissue drainage stent provided by an embodiment of the application;
  • FIG. 4 is a schematic diagram of another structure of the first flange of the tissue drainage stent provided by an embodiment of the application;
  • FIG. 5 is another structural schematic diagram of the first flange of the tissue drainage stent provided by the embodiment of the application.
  • FIG. 6 is another structural schematic diagram of the first flange and the second flange of the tissue drainage stent provided by the embodiment of the application;
  • FIG. 7 is another structural schematic diagram of the first flange and the second flange of the tissue drainage stent provided by the embodiment of the application;
  • Figure 8 is a schematic top view of the structure of a tissue drainage stent provided in Figure 6;
  • Figure 9 is a schematic top view of the structure of the tissue drainage stent provided in Figure 7;
  • FIG. 10 is a schematic top view of another structure of the tissue drainage stent provided by an embodiment of the application.
  • FIG. 11 is a schematic top view of another structure of the tissue drainage stent provided by the embodiment of the application.
  • Figure 12 is a schematic side view of another structure of the tissue drainage stent provided by an embodiment of the application.
  • FIG. 13 is a schematic diagram of another structure of a tissue drainage stent provided by an embodiment of the application.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • tissue drainage stents according to some embodiments of the present application with reference to FIGS. 1 to 13.
  • an embodiment of the present application provides a tissue drainage stent, including a drainage tube 1 and a first flange 2 provided at one end of the drainage tube 1, the first flange 2 protruding from the drainage tube 1
  • the outer wall includes a plurality of first supporting wings 201; one end of the first supporting wings 201 is connected to the drainage tube 1, and the other end extends outward in a direction away from the center line of the drainage tube 1; and a plurality of first supporting wings 201 It is arranged along the circumferential direction of the drainage tube 1, that is, the plurality of first supporting wings 201 can be expanded outward to form an open structure and form a supporting surface to support the target tissue.
  • the tissue drainage stent of the embodiment of the present application is configured to be inserted into the body under an endoscope to perform an anastomosis and drainage between tissues, wherein the drainage tube 1 is hollow to form a drainage channel, one end of which is connected to the target tissue, and the other end is connected to the anastomosing tissue Connected to drain between the target tissue and the anastomosing tissue.
  • the target tissue such as a pancreatic pseudocyst
  • a first flange 2 that can be expanded outward is provided at one end of the drainage tube 1 corresponding to the target tissue.
  • the first flange 2 includes a plurality of first supporting wings 201 that are expanded outward. To prevent the wall surface of the target tissue from sticking to block the connection between the drainage tube 1 and the target tissue during the drainage process, so as to ensure the smooth drainage between the tissues and improve the treatment effect; at the same time, multiple first supports The wings 201 jointly support the tissue wall surface to make the wall surface uniformly stressed and reduce the irritation to the tissue.
  • the plurality of first support wings 201 provided in the embodiment of the present application may be deployed in an umbrella shape or a petal shape. Or it is deployed like a wind wheel to support the wall surface of the target tissue around the outer circumference of the drainage tube 1 to ensure the normal drainage of the drainage tube.
  • the clinical needs can be adjusted by adjusting the number of knitting heads or the outermost outer diameter of the umbrella end of the first supporting wings 201 The supporting force of the first flange 2 to ensure the normal drainage.
  • the first supporting wing 201 in the embodiment of the present application has no sharp corners and can have a good fit with the wall surface of the target tissue. Causes irritation to the tissue wall, causing inflammation or bleeding.
  • the first supporting wing 201 has a certain degree of flexibility to reduce irritation to the tissue wall.
  • the tissue drainage stent of the present application can have a long-lasting drainage effect in the process of inter-tissue drainage treatment, and has little tissue irritation.
  • the first supporting wing 201 is in the shape of a flat sheet or a rolled sheet.
  • the first supporting wing 201 When the first supporting wing 201 is in the shape of a flat sheet, it extends along the radial direction of the drainage tube 1, and can be umbrella-shaped (as shown in Figures 2 and 3), petal-shaped (as shown in Figure 4) or wind Wheel type (as shown in Figure 5) and so on.
  • its curling direction can be along the radial direction of the drainage tube 1 (as shown in Figures 6 and 7) or along the outer circumference of the drainage tube 1 (not shown in the figure) .
  • the first supporting wing 201 is curled along the radial or outer circumferential direction of the drainage tube 1, its opening direction faces the target tissue.
  • the first supporting wing 201 can form an interstitial fluid circulation inlet with the target tissue to promote the drainage of interstitial fluid ;
  • the unique open structure at the inlet end will not form a fully enclosed cavity when the drainage tissue (such as a pancreatic cyst) shrinks, and has the function of guiding fluid into the drainage tube.
  • the first supporting wing 201 is preferably a flat sheet, and the plurality of flat sheet-shaped first supporting wings 201 may be spaced apart from each other. Set up or stack up to present a complete supporting surface.
  • the number of the first supporting wing 201 may be relatively small, preferably two or four.
  • the number of the first supporting wings 201 is three, and the three first supporting wings 201 are arranged at equal intervals along the circumferential direction of the drainage tube 1, and three The first supporting wings 201 are distributed in a rotationally symmetrical manner with respect to the centerline of the drainage tube 1 and present a wind wheel-like structure.
  • the three first supporting wings 201 are arranged at equal intervals to effectively support the wall surface of the target tissue, and achieve the optimal supporting effect when the number of supporting wings is the smallest.
  • the corners of the end of the first supporting wing 201 away from the drainage tube 1 are in an arc-shaped transition.
  • the first supporting wing 201 is arranged away from the drainage tube 1 in this embodiment.
  • the corners of one end are in an arc transition, that is, the expanded edge of the first support wing 201 is in an arc transition, without sharp corners or edges, so as to avoid irritation to the wall of the target tissue, and overcome the existing inter-tissue metal to a certain extent. Drainage stents can easily cause inflammation, bleeding or hyperplasia and other defects in tissue stimulation.
  • a second flange 3 is provided on the end of the drainage tube 1 away from the first flange 2;
  • the second flange 3 has a continuous flanging curled structure or a bulging spherical structure along the circumferential direction of the drainage tube 1 (as shown in Figure 12); or,
  • the second flange 3 includes a plurality of second supporting wings 301; one end of the second supporting wings 301 is connected to the drainage tube 1, and the other end extends outward in a direction away from the centerline of the drainage tube 1; and a plurality of second supporting wings 301 It is arranged along the circumference of the drainage tube 1.
  • the end of the drainage tube 1 away from the first flange 2, that is, the end close to the anastomotic tissue is provided with a second flange 3 protruding outwards, and the second flange 3 is supported and fixed with the anastomotic tissue.
  • the second flange 3 can prop up the wall of the anastomotic tissue to prevent the anastomotic tissue from blocking the drainage channel, and further ensure the smooth outflow of the drainage material; on the other hand, the anastomotic tissue can drain the whole through the second flange 3
  • the stent plays a fixed role and prevents the drainage stent from falling off into the abdominal cavity.
  • the second flange 3 can be a continuous flanging curled structure or an expanded spherical structure along the circumference of the drainage tube 1, or it can be in the form of a supporting wing like the first flange 2, as long as it can It is sufficient to support drainage of the anastomotic tissue and fix the entire stent.
  • the second flange 3 when the second flange 3 has a continuous bulging spherical structure along the circumferential direction of the drainage tube 1, it presents a mushroom-like flat umbrella structure, and its bulging wall is smooth. And it protrudes from one end of the drainage tube 1, and at the same time, its bulging wall is provided with an opening corresponding to the open end of the drainage tube 1, forming an inlet end.
  • the second supporting wing 301 is in the shape of a flat sheet, a curled sheet or a convex spherical shape.
  • the specific structure of the second supporting wing 301 can be a flat sheet (as shown in FIG. 1) or a rolled sheet (as shown in FIG. 6 and Fig. 7), it can also be a convex spherical shape bulging outwards (as shown in Fig. 13).
  • the second supporting wing 301 is in the shape of a flat sheet or a rolled sheet, its structure and arrangement principle are the same as those of the first supporting wing 201, so it is not repeated here.
  • the second supporting wing 301 can also adopt a convex spherical shape that bulges outwards, because the anastomotic tissue end does not require an excessively large supporting area, so as long as the second flange 3 can support the wall of the anastomotic tissue to avoid blocking the drainage
  • the cavity can be used to fix the stent at the same time; the convex spherical support wings have better surface smoothness and are not easy to cause irritation to the tissue.
  • the first flange 2 and the second flange 3 are set to 0.3- of the outer diameter of the drainage tube 1 along the radial extension of the drainage tube 1.
  • the outer diameter D1 of the first flange 2 and the outer diameter D2 of the second flange 3 are respectively more than 1.3 times the outer diameter D of the drainage tube 1, and preferably the first flange 2 and the second flange
  • the outer diameters of 3 are respectively within 3 times of the outer diameter D of the drainage tube 1, to ensure that the overall size of the drainage stent is within a reasonable range, and to ensure more adequate drainage of the tissue fluid.
  • At least part of the first support wing 201 and at least part of the second support wing An X-ray developer is provided on the 301. Further preferably, an X-ray developer can be provided on each first support wing 201 of the first flange 2 and each second support wing 301 of the second flange 3 correspondingly.
  • the material of the X-ray developer can be tantalum.
  • the embodiment of the present application in order to facilitate the removal of the drainage support at the end of the drainage, the embodiment of the present application is provided with a recovery on the second flange 3.
  • Line 4 pull the recovery line 4 to take out the drainage support.
  • the recovery line 4 is arranged at the edge of the second flange 3.
  • the material of the recycling line 4 can be selected from high molecular polymers or metal wires that have good biocompatibility and are not easily corroded by body fluids.
  • the drainage tube 1, the first flange 2 and the second flange 3 are all wire-like braided structures, specifically braided by memory alloy wires.
  • the drainage tube 1, the first flange 2 and the second flange 3 are all covered with a bio-leakage membrane to prevent the drainage material from leaking from the stent mesh, and can effectively inhibit the growth of the tissue wall into the stent mesh in contact with it In the hole, prevent the in-grown granulation.
  • the material of the biological leak-proof membrane may be a polymer material with good biological properties such as PTFE, PET, or silica gel, which will not cause biological toxicity and can facilitate the later recovery of the stent.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Otolaryngology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Prostheses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

La présente invention se rapporte au domaine technique des dispositifs médicaux minimalement invasifs et concerne en particulier une endoprothèse de drainage tissulaire. L'endoprothèse de drainage tissulaire comprend un tube de drainage et une première bride disposée en une extrémité du tube de drainage, la première bride fait saillie à partir de la paroi externe du tube de drainage et le tube de drainage est creux pour former un canal de drainage ; l'extrémité du tube de drainage correspondant au tissu cible est pourvue de la première bride qui peut être étendue vers l'extérieur, la première bride comprend une pluralité de premières ailes support qui s'étendent vers l'extérieur, les premières ailes support peuvent supporter une surface de paroi du tissu cible pour empêcher le blocage de la partie de raccordement entre le tube de drainage et le tissu cible par la surface de paroi du tissu cible en raison du contact pendant un processus de drainage, ce qui permet d'assurer la régularité du drainage intertissulaire et d'améliorer l'effet de traitement ; en outre, la pluralité de premières ailes de support soutiennent conjointement la surface de paroi du tissu de telle sorte que la surface de paroi est soumise à une contrainte uniforme, ce qui permet de réduire l'irritation du tissu.
PCT/CN2019/126069 2019-05-24 2019-12-17 Endoprothèse de drainage tissulaire WO2020238167A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE212019000425.3U DE212019000425U1 (de) 2019-05-24 2019-12-17 Stent zur Gewebedrainage
ES202190010U ES1285656Y (es) 2019-05-24 2019-12-17 Endoprotesis de drenaje de tejidos
AU2021102675A AU2021102675A4 (en) 2019-05-24 2021-05-19 Tissue drainage stent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201920766219.0 2019-05-24
CN201920766219.0U CN210277940U (zh) 2019-05-24 2019-05-24 组织引流支架

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU2021102675A Division AU2021102675A4 (en) 2019-05-24 2021-05-19 Tissue drainage stent

Publications (1)

Publication Number Publication Date
WO2020238167A1 true WO2020238167A1 (fr) 2020-12-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/126069 WO2020238167A1 (fr) 2019-05-24 2019-12-17 Endoprothèse de drainage tissulaire

Country Status (4)

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CN (1) CN210277940U (fr)
DE (1) DE212019000425U1 (fr)
ES (1) ES1285656Y (fr)
WO (1) WO2020238167A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114681758B (zh) * 2022-03-30 2024-06-25 广东富江医学科技有限公司 输尿管支架及其使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202355481U (zh) * 2011-11-10 2012-08-01 贺鹏举 鼻腔内窥镜下泪囊造孔多功能支架
CN104490499A (zh) * 2014-11-25 2015-04-08 兰州西脉记忆合金股份有限公司 一种记忆合金五官腔道支架
CN108186072A (zh) * 2018-01-19 2018-06-22 西安交通大学医学院第附属医院 一种用于空腔脏器吻合的防返流支架

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202355481U (zh) * 2011-11-10 2012-08-01 贺鹏举 鼻腔内窥镜下泪囊造孔多功能支架
CN104490499A (zh) * 2014-11-25 2015-04-08 兰州西脉记忆合金股份有限公司 一种记忆合金五官腔道支架
CN108186072A (zh) * 2018-01-19 2018-06-22 西安交通大学医学院第附属医院 一种用于空腔脏器吻合的防返流支架

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ES1285656U (es) 2022-01-27
CN210277940U (zh) 2020-04-10
ES1285656Y (es) 2022-04-21
DE212019000425U1 (de) 2021-06-21

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