[go: up one dir, main page]

WO2024119958A1 - Cathéter d'aspiration pour opération d'intervention - Google Patents

Cathéter d'aspiration pour opération d'intervention Download PDF

Info

Publication number
WO2024119958A1
WO2024119958A1 PCT/CN2023/120085 CN2023120085W WO2024119958A1 WO 2024119958 A1 WO2024119958 A1 WO 2024119958A1 CN 2023120085 W CN2023120085 W CN 2023120085W WO 2024119958 A1 WO2024119958 A1 WO 2024119958A1
Authority
WO
WIPO (PCT)
Prior art keywords
catheter
section
proximal
inches
end section
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/120085
Other languages
English (en)
Chinese (zh)
Inventor
陈志鹏
姜晓威
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Hengchang Medical Technology Co Ltd
Original Assignee
Shanghai Hengchang Medical Technology Co Ltd
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 Shanghai Hengchang Medical Technology Co Ltd filed Critical Shanghai Hengchang Medical Technology Co Ltd
Publication of WO2024119958A1 publication Critical patent/WO2024119958A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2217/00—General characteristics of surgical instruments
    • A61B2217/002—Auxiliary appliance
    • A61B2217/005—Auxiliary appliance with suction drainage system
    • 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
    • A61M25/00—Catheters; Hollow probes

Definitions

  • the present invention relates to an intravascular treatment system for intravascular embolism or thrombosis of a human patient, and more particularly to an aspiration catheter for interventional surgery.
  • the blood clot may be present in the deep veins, or it may flow into the pulmonary artery with the blood flow, causing blockage of blood flow in the pulmonary artery, thereby affecting the gas exchange of the blood.
  • Embolectomy where a balloon is placed at the site of the occlusion and the embolus is removed by withdrawing the balloon;
  • Balloon angioplasty in which a balloon-tipped catheter is introduced into the vessel (e.g., usually via an introducer catheter), then advanced to the site of the occlusion and inflated to dilate the stenosis. Balloon angioplasty is suitable for treating vascular stenosis but is generally ineffective for treating acute thromboembolism because none of the occlusion is removed and restenosis often occurs after dilation;
  • Another percutaneous technique involves placing a catheter near the clot and infusing streptokinase, urokinase, or other thrombolytic agents to dissolve the clot.
  • Thrombolysis usually takes hours to days to be successful.
  • thrombolytic agents may cause bleeding, and in many patients thrombolytic agents cannot be used at all;
  • the catheter is inserted through the blood vessel, and the distal end of the catheter is brought close to the embolus. Negative pressure is created through the syringe connected to the proximal end of the catheter to achieve the effect of aspirating the embolus.
  • the existing catheter has the following problems:
  • the inner diameter of catheter products is small and is not enough to suck out large emboli
  • the catheter is prone to bending after passing through a smaller path, so effective suction cannot be achieved;
  • the present invention provides an aspiration catheter for interventional surgery, which at least solves the problems that the inner diameter of the catheter cannot suck out large embolic objects, the large inner diameter catheter is difficult to pass through the curved blood vessel path, and the catheter is prone to collapse when passing through a small path.
  • the catheter is prone to bending after the diameter is reduced, and the catheter is prone to collapse when the negative pressure of suction is large.
  • the present invention adopts the following technical solution:
  • a suction catheter for interventional surgery comprises an outer sleeve and a reinforcement layer extending in the axial direction, wherein the outer sleeve is arranged on the outer layer of the reinforcement layer in the radial direction, and the outer sleeve comprises a terminal end, a distal section, a middle section, and a proximal section in the axial direction, wherein the material hardness of the distal section, the middle section, and the proximal section increases in sequence; the material hardness of the middle section increases in sequence from the distal section to the proximal section in the axial direction; the reinforcement layer in the distal section comprises a spring structure, the reinforcement layer in the middle section comprises a spring structure and a braided mesh tube structure, and the reinforcement layer in the proximal section comprises a braided mesh tube structure.
  • the axial length of the terminal end is 10 mm
  • the axial length of the distal end section is 400 mm
  • the axial length of the middle section is 120 mm
  • the axial length of the proximal end section is 500 mm.
  • the material hardness of the end is greater than or equal to 35D
  • the material hardness of the distal segment is less than or equal to 35D
  • the material hardness of the middle segment is 42D-63D
  • the material hardness of the proximal segment is greater than or equal to 63D.
  • the material hardness of the middle section increases from 42D to 63D along the axial direction from the distal section to the proximal section.
  • the braided mesh tube structure of the middle section includes a first metal flat wire, and the first metal flat wire has a thickness of 0.001-0.003 inches and a width of 0.003-0.005 inches.
  • the spring structure includes a second metal flat wire, and the second metal flat wire has a thickness of 0.002-0.005 inches and a width of 0.007-0.015 inches.
  • the second flat metal wire of the spring structure of the distal section has a thickness greater than 0.004 inches and a width greater than 0.01 inches.
  • the outer diameter of the suction catheter ranges from 16Fr to 24Fr; when the outer diameter is 16Fr, the inner diameter of the suction catheter is not less than 4.2mm; when the outer diameter is 24Fr, the inner diameter of the suction catheter is not less than 7mm.
  • the inner diameter of the proximal section is greater than the inner diameter of the distal section.
  • the inner diameter of the proximal section is greater than 5 mm; when the outer diameter is 24 Fr, the inner diameter of the proximal section is greater than 8 mm.
  • the catheter of the present invention has a larger inner diameter and can suck out larger emboli.
  • the catheter can also pass through a curved blood vessel path without causing bending and collapse problems.
  • FIG1 is a schematic diagram of the structure of a thrombus treatment device
  • FIG2 is a schematic diagram of the external structure of the catheter of the present invention.
  • FIG3 is a schematic diagram of the internal structure of the catheter of the present invention.
  • Fig. 4 is a schematic diagram of an anti-collapse test
  • Fig. 5a is a schematic cross-sectional view of a catheter without collapse
  • FIG. 5 b is a schematic diagram of a collapsed catheter cross section.
  • proximal side/proximal end refers to the end close to the operator
  • distal side/distal end refers to the end away from the operator or entering the human blood vessel.
  • Each component may have a proximal end and a distal end, and the proximal end/distal end is a description of the relative direction/position, and does not directly represent the distance.
  • the suction catheter 100 of the present invention is applied to a thrombus treatment device.
  • the thrombus treatment device mainly includes a suction catheter 100, a hemostatic valve 200, a pressure source 300, a switch valve 400 and a quick disassembly mechanism 500.
  • the suction catheter 100 is a long tube, as shown in the circled part of FIG1 , having two ends, a proximal end and a distal end, and the entire interior between the proximal end and the distal end of the suction catheter 100 is hollow, forming a hollow flexible tube with a long length.
  • the distal end of the suction catheter 100 enters the human blood vessel, and the proximal end remains outside the human body and/or is connected to the hemostatic valve 200.
  • the proximal end of the suction catheter 100 is connected to the hemostatic valve 200, the pressure source 300 is connected to the hemostatic valve 200 through the quick disassembly mechanism 500, and the switch valve 400 can be set between the quick disassembly mechanism 500 and the second bifurcation.
  • the suction catheter 100 is a long tube that is hollow in the middle.
  • the suction catheter 100 includes an outer sleeve 11 extending in the axial direction, a reinforcement layer 12 and an inner layer 13.
  • the outer sleeve 11 is arranged on the outer layer of the reinforcement layer 12 in the radial direction, and the inner layer 13 is arranged inside the reinforcement layer 12, thereby forming a three-layer tube structure.
  • the outer sleeve 11, the reinforcement layer 12 and the inner layer 13 are the structural layers of the suction catheter 100 in the radial direction.
  • the material of the inner layer 13 is polytetrafluoroethylene
  • the material of the reinforcement layer 12 is selected as metal to constitute a metal reinforcement layer.
  • the outer sleeve 11 of the present invention adopts a variable material structure to form a change in material in the axial direction, thereby forming a change in the hardness of the outer sleeve 11 in the axial direction.
  • the outer sleeve 11 includes a terminal 14, a distal section 15, an intermediate section 16, and a proximal section 17 in the axial direction.
  • the terminal 14, the distal section 15, the intermediate section 16, and the proximal section 17 are the structural divisions of the outer sleeve 11 of the suction catheter 100 in the axial direction.
  • the terminal 14 is the end closest to the human organ
  • the proximal section 17 is the end closest to the operator.
  • the outer sleeve 11 is a 1030mm cylindrical catheter
  • the terminal 14 has an axial length of 10mm
  • the distal section 15 has an axial length of 400mm
  • the intermediate section 16 has an axial length of 120mm
  • the proximal section 17 has an axial length of 500mm.
  • the terminal 14, the distal section 15, the intermediate section 16, and the proximal section 17 can have other length selections in the axial direction, which can all achieve the technical purpose of the present invention and achieve the technical effect of the present invention.
  • the suction catheter 100 of the present invention is a large-caliber catheter, so the selection of its outer diameter (circumference) and inner diameter has specific constraints.
  • the outer diameter of the suction catheter 100 ranges from 16Fr to 24Fr, where Fr is the abbreviation of the unit of length French.
  • the outer diameter of the suction catheter 100 When the outer diameter of the suction catheter 100 is 16Fr, its overall inner diameter is not less than 4.2mm, and when the outer diameter of the suction catheter 100 is 24Fr, its overall inner diameter is not less than 7mm.
  • the suction catheter 100 since the suction catheter 100 is divided into the end 14, the distal section 15, the middle section 16 and the proximal section 17 in the axial direction, its inner diameter may also vary in each section.
  • the inner diameter of the proximal section 17 may be larger than the inner diameter of the distal section 15.
  • the outer diameter of the proximal section 17 When the outer diameter is 16Fr, the inner diameter of the proximal section 17 is greater than 5mm, and when the outer diameter is 24Fr, the inner diameter of the proximal section 17 is greater than 8mm.
  • the outer diameter of the distal section 15 is correspondingly smaller than the outer diameter of the proximal section 17.
  • the radius of the inner diameter (inner layer 13) of the suction catheter 100 and the flow rate are in direct proportion to the fourth power.
  • the present invention selects to make the suction catheter 100 into a large diameter, so that the suction efficiency (suction flow rate) of the suction catheter 100 can be significantly improved.
  • the specific formula is as follows:
  • the outer diameter range of 16Fr-24Fr and the inner diameter range mentioned above make the inner diameter and outer diameter of the suction catheter 100 of the present invention larger than those of ordinary interventional treatment catheters.
  • the inner diameter and outer diameter of the suction catheter 100 increase, its anti-bending performance and anti-collapse performance will be challenged.
  • Ordinary interventional suction catheters cannot achieve the inner diameter and outer diameter of this size, because large-sized catheters will have serious bending and collapse problems during use.
  • the suction catheter 100 can be On the basis of maintaining a large caliber, the bending resistance and collapse resistance are met at the same time. Therefore, in terms of material selection, the material hardness of the distal segment 15, the middle segment 16 and the proximal segment 17 is increased in sequence, and the material hardness of the middle segment 16 is increased in sequence along the axial direction from the distal segment 15 to the proximal segment 17, but the material hardness of the terminal 14 is independent, and the material hardness of the terminal 14 generally needs to be greater than (at least equal to) the material hardness of the distal segment 15.
  • the material of the distal segment 15 is a combination of NEUSoft862 (thermoplastic polyurethane) and/or Pebax25D (polyether block amide).
  • the material hardness of the terminal 14 is greater than or equal to 35D (where D is the Shore hardness unit), the material hardness of the distal segment 15 is less than or equal to 35D, and the material hardness of the middle segment 16 is 42D-63D.
  • the material hardness of the middle segment 16 increases axially from 42D to 55D from the distal segment 15 to the proximal segment 17, and finally increases to 63D.
  • the material hardness of the proximal segment 17 is greater than or equal to 63D.
  • the material hardness of the end 14 is 35D
  • the material hardness of the distal segment 15 is 35D
  • the material hardness of the middle segment 16 changes continuously from 42D to 55D along the axial direction from the distal segment 15 to the proximal segment 17, and then continuously changes to 63D
  • the material hardness of the proximal segment 17 is 63D.
  • the material hardness of the end 14 is 35D
  • the material hardness of the distal segment 15 is 25D
  • the material hardness of the middle segment 16 changes continuously from 42D to 55D along the axial direction from the distal segment 15 to the proximal segment 17, and then continuously changes to 63D
  • the material hardness of the proximal segment 17 is 70D.
  • the change in the hardness of the outer sleeve 11 material helps to achieve the anti-bending and anti-collapse performance of the suction catheter 100.
  • the material and structure selection of the inner reinforcement layer 12 of the outer sleeve 11 also affect the anti-bending and anti-collapse performance of the suction catheter 100.
  • the reinforcement layer 12 in order to match the material selection of the end 14, the distal segment 15, the middle segment 16, and the proximal segment 17 of the outer sleeve 11, the reinforcement layer 12 also changes in structure, and the change corresponds to the segmentation of the outer sleeve 11.
  • the reinforcement layer 12 includes a spring structure 21 and a braided mesh structure 22, and the two have corresponding distribution areas in the axial direction.
  • the portion of the reinforcement layer 12 corresponding to the distal segment 15 includes the spring structure 21, the portion of the reinforcement layer 12 corresponding to the middle segment 16 includes the spring structure 21 and the braided mesh structure 22, and the portion of the reinforcement layer 12 corresponding to the proximal segment 17 includes the braided mesh structure 22.
  • the second metal flat wire of the spring structure 21 corresponding to the distal segment 15 has a thickness greater than 0.004 inches and a width greater than 0.01 inches.
  • the braided mesh tube structure 22 corresponding to the middle segment 16 includes a first metal flat wire, the thickness of the first metal flat wire is 0.001-0.003 inches, and the width is 0.003-0.005 inches.
  • the spring structure 21 includes a second metal flat wire, the width of the second metal flat wire is 0.007-0.015 inches, and the thickness is 0.002-0.005 inches.
  • the present invention conducted the following experiments: the suction catheter 100 was wrapped around cylinders with different outer diameters for 180 degrees.
  • the present invention conducts experiments on different combinations of the reinforcement layer 12 and the outer sleeve 11 in the three-layer structure of the suction catheter 100, and the anti-bending test results are as follows:
  • the metal reinforcement layer adopts a spring structure, that is, the thickness of the second metal flat wire is 0.002 inches, the width is 0.008 inches, and the hardness of the outer sleeve 11 corresponding to this part is 35D, the minimum bending diameter is 60 mm.
  • the metal reinforcement layer adopts a spring structure, that is, the thickness of the second metal flat wire is 0.003 inches, the width is 0.009 inches, and the hardness of the outer sleeve 11 corresponding to this part is 35D, the minimum bending diameter is 46 mm.
  • the thickness of the second metal flat wire is 0.003 inches
  • the width is 0.009 inches
  • the hardness of the outer sleeve 11 corresponding to this part is 63D
  • the minimum bending diameter is 72 mm.
  • the thickness of the second metal flat wire is 0.004 inches
  • the width is 0.016 inches
  • the hardness of the outer sleeve 11 corresponding to this part is 35D
  • the minimum bending diameter is 15 mm.
  • the thickness of the second metal flat wire is 0.004 inches
  • the width is 0.016 inches
  • the hardness of the outer sleeve 11 corresponding to this part is 55D
  • the minimum bending diameter is 42 mm.
  • the thickness of the second metal flat wire is 0.004 inches
  • the width is 0.016 inches
  • the hardness of the outer sleeve 11 corresponding to this part is 63D
  • the minimum bending diameter is 46 mm.
  • the thickness of the second metal flat wire is 0.005 inches
  • the width is 0.015 inches
  • the hardness of the outer sleeve 11 corresponding to this part is 25D
  • the minimum bending diameter is 15 mm.
  • the thickness of the second metal flat wire is 0.005 inches
  • the width is 0.015 inches
  • the hardness of the outer sleeve 11 corresponding to this part is 35D
  • the minimum bending diameter is 6 mm.
  • the metal reinforcement layer adopts a braided mesh tube structure, that is, the thickness of the first metal flat wire is 0.002 inches, the width is 0.008 inches, and the hardness of the outer sleeve 11 corresponding to this part is 35D, the minimum bending diameter is 15 mm.
  • the metal reinforcement layer adopts a braided mesh tube structure, that is, the thickness of the first metal flat wire is 0.002 inches, the width is 0.008 inches, and the hardness of the outer sleeve 11 corresponding to this part is 63D, the minimum bending diameter is 64mm.
  • the metal reinforcement layer adopts a woven mesh tube structure, that is, the thickness of the first metal flat wire is 0.003 inches, the width is 0.007 inches, and the hardness of the outer sleeve 11 corresponding to this part is 42A+25D (where A and D are both Shore hardness units), the minimum bending diameter is 15mm.
  • the metal reinforcement layer is made of round wire with a thickness of 0.002 inches and the hardness of the outer sleeve 11 corresponding to this portion is 35D, the minimum bending diameter is 60 mm.
  • the thickness of the metal flat wire is 0.002-0.005 inches and the width is within 0.007-0.015 inches, it is combined with a material with a hardness of 42A-35D to resist bending of 15mm diameter, which is beneficial to the bending resistance.
  • the material selection of the present invention is also reflected in the anti-collapse performance of the end 14 of the suction catheter 100.
  • the length of the end 14 of the suction catheter 100 is about 10 mm, and the material hardness is greater than or equal to 35D, so that the end 14 will not collapse under the negative pressure suction of 97kpa.
  • a negative pressure of atmospheric pressure is applied to the proximal section 17 of the suction catheter 100, and the end 14 is blocked with a transparent plastic sheet 31 to observe whether the suction catheter 100 as a whole collapses.
  • the present invention tests the end 14 of the 24Fr suction catheter 100 of different hardnesses, and the test results are as follows:
  • the aspiration catheter 100 does not collapse, as shown in FIG. 5 a .
  • the aspiration catheter 100 does not collapse, as shown in FIG. 5 a .
  • the present invention simultaneously improves the structure/material of the outer sleeve 11 and the reinforcement layer 12 of the suction catheter 100.
  • the hardness of the outer sleeve 11 changes in the axial direction, so that the hardness of the outer sleeve 11 gradually increases from the distal section 15 to the proximal section 17, and the farthest end (i.e., the end 14) of the suction catheter 100 is made of a material with a higher hardness, so as to maintain the anti-bending performance and anti-collapse performance under the large caliber.
  • the material and hardness of the reinforcement layer 12 in the axial direction also change with the outer sleeve 11, using metal flat wire instead of traditional round wire, and the weaving method of the metal flat wire gradually changes from a spring structure to a woven mesh structure, and the thickness and width of the metal flat wire can also be changed accordingly.
  • the present invention has tested various choices of materials for the outer sleeve 11 and the reinforcement layer 12, and finally determined the material/structure value range of the outer sleeve 11 and the reinforcement layer 12 suitable for the large-caliber suction catheter 100.
  • the suction catheter for interventional surgery of the present invention has at least the following beneficial effects:
  • the inner diameter of the catheter is large enough to aspirate larger emboli
  • Catheters with larger inner diameters can pass through tortuous blood vessels
  • the catheter will not bend after passing through a smaller path, so it will not affect effective suction
  • the catheter will not collapse when the negative pressure of suction is large, so it will not affect the efficiency of suction.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

L'invention concerne un cathéter d'aspiration pour une opération d'intervention, comprenant un manchon externe s'étendant dans une direction axiale et une couche de renforcement. Le manchon externe est disposé sur une couche externe de la couche de renforcement dans une direction radiale. Le manchon externe, dans la direction axiale, comprend séquentiellement une extrémité arrière, une section d'extrémité distale, une section intermédiaire et une section d'extrémité proximale, la dureté de matériau de la section d'extrémité distale, de la section intermédiaire et de la section d'extrémité proximale augmentant séquentiellement ; la dureté de matériau de la section intermédiaire augmente séquentiellement dans la direction axiale de la section d'extrémité distale à la section d'extrémité proximale ; la couche de renforcement dans la section d'extrémité distale comprend une structure de ressort, la couche de renforcement dans la section intermédiaire comprend une structure de ressort et une structure de tube en maille tissée, et la couche de renforcement dans la section d'extrémité proximale comprend une structure de tube en maille tissée. Le cathéter d'aspiration pour une opération d'intervention de la présente invention résout le problème selon lequel un embole avec un grand volume ne peut pas être aspiré en raison du diamètre interne d'un cathéter ; le problème selon lequel un cathéter ayant un grand diamètre interne est difficile à passer à travers un trajet de vaisseau sanguin courbé ; le problème selon lequel un cathéter est susceptible de se plier après avoir traversé un petit trajet ; et le problème selon lequel un cathéter est susceptible de s'affaisser lorsque la pression négative d'aspiration est importante.
PCT/CN2023/120085 2022-12-09 2023-09-20 Cathéter d'aspiration pour opération d'intervention Ceased WO2024119958A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211576675.1A CN115644990B (zh) 2022-12-09 2022-12-09 用于介入手术的抽吸导管
CN202211576675.1 2022-12-09

Publications (1)

Publication Number Publication Date
WO2024119958A1 true WO2024119958A1 (fr) 2024-06-13

Family

ID=85019754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/120085 Ceased WO2024119958A1 (fr) 2022-12-09 2023-09-20 Cathéter d'aspiration pour opération d'intervention

Country Status (2)

Country Link
CN (1) CN115644990B (fr)
WO (1) WO2024119958A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115644990B (zh) * 2022-12-09 2024-04-23 上海珩畅医疗科技有限公司 用于介入手术的抽吸导管

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005044359A1 (fr) * 2003-11-07 2005-05-19 Kaneka Corporation Catheter d'aspiration
WO2021068421A1 (fr) * 2019-10-09 2021-04-15 上海加奇生物科技苏州有限公司 Cathéter spécial pour l'aspiration de thrombus à partir d'un vaisseau cérébral distal
CN113876392A (zh) * 2021-11-09 2022-01-04 北京深瑞达医疗科技有限公司 一种血栓抽吸组件
WO2022002280A1 (fr) * 2020-06-30 2022-01-06 微创神通医疗科技（上海）有限公司 Cathéter
CN217311535U (zh) * 2022-04-11 2022-08-30 上海微密医疗科技有限公司 一种外径变化的微导管
CN115644990A (zh) * 2022-12-09 2023-01-31 上海珩畅医疗科技有限公司 用于介入手术的抽吸导管

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080262471A1 (en) * 2007-04-17 2008-10-23 Medtronic Vascular, Inc. Catheter with braided and coiled reinforcing layer
CN101933821B (zh) * 2009-06-30 2014-03-12 上海微创医疗器械（集团）有限公司 一种微导管
CN201596219U (zh) * 2010-02-09 2010-10-06 北京泰杰伟业科技有限公司 用于血管介入治疗的微导管
JP2012075618A (ja) * 2010-09-30 2012-04-19 Kaneka Corp 医療用カテーテル
JP5964063B2 (ja) * 2012-01-30 2016-08-03 株式会社グッドマン カテーテル
AU2018208460B2 (en) * 2017-01-10 2023-03-16 Route 92 Medical, Inc. Aspiration catheter systems and methods of use
EP4272776A3 (fr) * 2017-05-24 2024-03-27 Mivi Neuroscience, Inc. Systèmes de cathéter d'aspiration pour appliquer une aspiration efficace dans des vaisseaux distants, en particulier des artères cérébrales
CA3197631A1 (fr) * 2020-11-18 2022-05-27 Inari Medical, Inc. Catheters ayant des parties distales formees, et systemes et procedes associes
US11826520B2 (en) * 2020-12-08 2023-11-28 DePuy Synthes Products, Inc. Catheter designs for enhanced column strength
CN112472955A (zh) * 2020-12-15 2021-03-12 上海融脉医疗科技有限公司 一种多节段硬度介入导管及其编制方法
CN217311536U (zh) * 2022-04-11 2022-08-30 上海微密医疗科技有限公司 一种介入用中间导管

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005044359A1 (fr) * 2003-11-07 2005-05-19 Kaneka Corporation Catheter d'aspiration
WO2021068421A1 (fr) * 2019-10-09 2021-04-15 上海加奇生物科技苏州有限公司 Cathéter spécial pour l'aspiration de thrombus à partir d'un vaisseau cérébral distal
WO2022002280A1 (fr) * 2020-06-30 2022-01-06 微创神通医疗科技（上海）有限公司 Cathéter
CN113876392A (zh) * 2021-11-09 2022-01-04 北京深瑞达医疗科技有限公司 一种血栓抽吸组件
CN217311535U (zh) * 2022-04-11 2022-08-30 上海微密医疗科技有限公司 一种外径变化的微导管
CN115644990A (zh) * 2022-12-09 2023-01-31 上海珩畅医疗科技有限公司 用于介入手术的抽吸导管

Also Published As

Publication number Publication date
CN115644990A (zh) 2023-01-31
CN115644990B (zh) 2024-04-23

Similar Documents

Publication Publication Date Title
JP2925457B2 (ja) 吸引カテーテル装置
CA2819670C (fr) Dispositifs et procedes d'elimination de caillots
US20240082540A1 (en) Catheters having multiple coil layers, and associated systems and methods
US7618434B2 (en) Devices and methods for disruption and removal of luminal occlusions
US8231600B2 (en) Intracranial aspiration catheter
US20110213290A1 (en) Systems and Methods for Removing Undesirable Material Within a Circulatory System
US20120172798A1 (en) Devices and methods for accessing a cerebral vessel
US20240041484A1 (en) Extended catheter and catheter system for removing embolus in small blood vessel
CN209984773U (zh) 一种导丝及球囊导管组件
CN111419338A (zh) 一种用于颅内取栓的球囊抽吸导管装置
CN115644990B (zh) 用于介入手术的抽吸导管
US20250090182A1 (en) Multi-lumen aspiration catheters, and associated systems and methods
US20240100299A1 (en) Aspiration catheter with shaped tip and angled cut
CN212700034U (zh) 一种用于颅内取栓的球囊抽吸导管装置
CN117244160B (zh) 医疗导管
CN118924381B (zh) 一种多级血栓清除装置
US9707325B2 (en) Drainage system with occlusion member
US12496077B2 (en) Systems and methods for removing undesirable material within a circulatory system
CN221903888U (zh) 超声导管
US20230030606A1 (en) Device and method of use for aspiration system retrievers
US12144494B2 (en) Embolic protection via biologic effect
CN117442844A (zh) 一种导管
CN117898793A (zh) 一种血栓抽吸系统
WO2022115254A1 (fr) Systèmes et procédés de navigation vasculaire
CN113648516A (zh) 球囊导管及取栓装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23899541

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 23899541

Country of ref document: EP

Kind code of ref document: A1