WO2020063455A1 - 电解脱机构以及电解脱装置 - Google Patents

电解脱机构以及电解脱装置 Download PDF

Info

Publication number
WO2020063455A1
WO2020063455A1 PCT/CN2019/106824 CN2019106824W WO2020063455A1 WO 2020063455 A1 WO2020063455 A1 WO 2020063455A1 CN 2019106824 W CN2019106824 W CN 2019106824W WO 2020063455 A1 WO2020063455 A1 WO 2020063455A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrolytic
release
flexible member
adsorption
catheter
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/CN2019/106824
Other languages
English (en)
French (fr)
Inventor
宋丽
郭远益
陈冰
常孟琪
王亦群
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.)
Microport Neurotech Shanghai Co Ltd
Original Assignee
Microport Neurotech Shanghai 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 Microport Neurotech Shanghai Co Ltd filed Critical Microport Neurotech Shanghai Co Ltd
Priority to KR1020217013011A priority Critical patent/KR102597482B1/ko
Priority to US17/281,111 priority patent/US20210338243A1/en
Priority to JP2021542245A priority patent/JP7557468B2/ja
Priority to EP19866573.9A priority patent/EP3858262B1/en
Publication of WO2020063455A1 publication Critical patent/WO2020063455A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • 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
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12027—Type of occlusion
    • A61B17/12031—Type of occlusion complete occlusion
    • 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
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
    • A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
    • A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
    • 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
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/1214—Coils or wires
    • A61B17/1215—Coils or wires comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
    • 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
    • A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
    • A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
    • 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
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/1214—Coils or wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00831—Material properties
    • A61B2017/00898—Material properties expandable upon contact with fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00831—Material properties
    • A61B2017/00942—Material properties hydrophilic
    • 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
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B2017/1205—Introduction devices
    • A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
    • A61B2017/12063—Details concerning the detachment of the occluding device from the introduction device electrolytically detachable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3966—Radiopaque markers visible in an X-ray image
    • 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

Definitions

  • the invention relates to the field of medical equipment, in particular to an electrolytic desorption mechanism and an electrolytic desorption device.
  • Intracranial hemangiomas are tumor-like protrusions of blood vessels caused by abnormal changes in blood vessels, especially intracranial aneurysms. When intravascular blood pressure suddenly rises, intracranial aneurysms rupture and hemorrhage, which may cause disability or death. Since Guglielmi et al. First reported Guglielmi detachable coils for the treatment of intracranial aneurysms in 1991, with the development of materials and treatment equipment, the embolization of coils has become the main treatment method for intracranial aneurysms.
  • FIG. 1 is a schematic cross-sectional view of an existing electrolytic decoupling coil.
  • the electrolytic decoupling coil includes a microcatheter 10, a push rod 20, a conductive wire 30, a spring coil 40, and a release point 31.
  • the distal opening 12 of the microcatheter 10 is maintained near the neck of the tumor, and the push rod 20 is penetrated inside the microcatheter 10, and a conductive wire 30 is disposed inside the push rod 20, and the conductive wire 30
  • the proximal end is electrically connected to an external release (not shown), and the distal end of the conductive wire 30 is connected to the spring coil 40 through a release point 31.
  • the distal end of the push rod 20 is provided with an elastic member 21.
  • the elastic member 21 is used to make the distal end of the push rod 20 more flexible and easy to shuttle through the intracranial curved blood vessels.
  • a developing region 11, the elastic member 21 is provided with a second developing region 22.
  • the doctor judges the position of the push rod 20 in the microcatheter 10 by observing the mutual positional relationship between the first developing region 11 and the second developing region 22. It is further determined whether the spring coil 40 has entered the aneurysm cavity.
  • the first developing region 11 and the second developing region 22 are often required to form an “inverted T” image, that is, the second developing region 22 extends toward the distal end of the microcatheter 10 and Only when the first development area 11 is completely crossed, the release point 31 can be ensured to protrude from the distal opening 12 of the microcatheter 10, so that the release point 31 can contact the blood, and the release point 31 has an electrolytic release environment. An electrolytic operation is performed to energize the release point 31, and the spring coil 40 is released.
  • the relief points 31 and the push rod 20 beyond the distal opening 12 may easily poke the aneurysm and cause a rupture risk.
  • the unrestrained spring coil 40 is pushed out of the distal opening 12 of the microcatheter 10 by the push rod 20, sometimes the entire disengagement area including the proximal end of the spring coil 40 causes the microcatheter 10 to escape from the tumor cavity. This phenomenon is called the "pipe jacking" effect, and it also causes danger.
  • the purpose of the present invention is to provide an electrolytic desorption mechanism and an electrolytic desorption device, so as to solve the problems of the low reliability of the release and the excessively long extension of the microcatheter in the existing electrolytic desorption device, which may easily cause danger.
  • the present invention provides an electrolytic removal mechanism, which is used to cooperate with the electrolytic removal device to realize the electrolytic removal of the implant, and is characterized in that it includes:
  • a release portion, the distal end of the release portion is connected to the implant, and the release portion is configured to be capable of electrolytic dissolution through electrical conduction to release the connection between the implant and the release portion;
  • Conductive parts including:
  • An anode conductive part is covered with a first insulation part, and a distal end of the anode conductive part is connected to a proximal end of the release part, and the proximal end of the anode conductive part is used for connection with the electricity Positive connection of the release;
  • a cathode conductive portion, a proximal end of the cathode conductive portion is used for connection with a negative electrode of the electrolytic separator, and the cathode conductive portion is electrically insulated from the anode conductive portion through the first insulating portion;
  • the adsorption portion is configured to electrically conduct the release portion and the cathode conductive portion after the electrolyte is adsorbed.
  • the adsorption portion is made of a hydrogel material.
  • the adsorption portion surrounds the release portion.
  • the adsorption portion is a spiral structure or a hollow pipe fitting, and is sleeved on the disengagement portion.
  • the adsorption portion is coated on the release portion.
  • the hydrogel material is selected from a combination of one or more of the following materials: cellulose and its derivative hydrogel; gelatin modified hydrogel; chitosan and its derivative cross-linked Hydrogels; hyaluronic acid and its modified crosslinked hydrogels; polyethylene glycol and its derivatives crosslinked hydrogels; polyvinyl alcohol and its derivatives crosslinked hydrogels; poly-N-methylpyrrolidone and Derivatives crosslinked hydrogels; polyester-based hydrogels; polyacrylamide and its derivatives crosslinked hydrogels; crosslinked expandable derived from one or more olefinically unsaturated polymerizable carboxylic monomers Polymers; and hydrogels of hydroxyethyl methacrylate and its derivatives.
  • the present invention also provides an electrolytic stripping device, which includes the above-mentioned electrolytic stripping mechanism, and further includes:
  • a push rod connected to the proximal end of the electrolytic disengagement mechanism
  • the electrolytic decoupling mechanism and the pushing rod can be movably disposed in the catheter, and the pushing rod is used to cooperate with the catheter to push the electrolytic decoupling mechanism to a target position.
  • a flexible member is provided at a distal end of the push rod, and the push rod is connected to the electrolytic disengagement mechanism through the flexible member.
  • the push rod and the flexible member are both hollow structures, and the conductive portion is penetrated between the push rod and the flexible member; the cathode conductive portion is covered with a second insulating portion, and It is electrically insulated from the push rod and the flexible member, and the distal end of the cathode conductive portion is exposed outside the second insulating portion and can be electrically connected to the release portion through the adsorption portion.
  • the push rod and the flexible member are both hollow structures, the anode conductive portion is penetrated between the push rod and the flexible member, and the push rod and the flexible member are configured together As the cathode conductive portion.
  • the suction portion and the flexible member are arranged side by side in the axial direction, and the suction portion is located at a distal end of the flexible member.
  • a proximal end of the adsorption portion is within the flexible member, and a distal end of the adsorption portion protrudes from a distal end of the flexible member.
  • the adsorption portion is entirely inside the flexible member.
  • the flexible member has a first developing portion, a distal end of the catheter is provided with a second developing portion, and both the first developing portion and the second developing portion are made of a developing material.
  • the release part and the cathode conductive part are continuously maintained in electrical conduction, thereby forming an electrolytic desorption environment for electrolytic dissolution of the dissociation part.
  • the release part connected to the anode conductive part is electrochemically reacted with the cathode conductive part to cause electrolytic dissolution of the release part itself. In this way, the implant is disconnected from the release part and leaves the entire electrolytic release mechanism.
  • the adsorption part can continuously conduct the release part and the cathode conductive part after the electrolyte is adsorbed to form a stable electrolytic environment, so it can improve the reliability of the electrolytic removal operation, and overcome the long release time of the existing electrolytic removal device, which requires multiple releases. Problems, and improve the safety and reliability of release.
  • the stripping section can be electrolytically stripped inside the catheter, and the stripping section can be ensured without having to push the stripping section out of the distal opening of the catheter.
  • the part can contact the electrolyte to form a stable electrolyte micro-circulation electrolytic de-environment, so that the implant can be safely and effectively electro-desorbed at any position inside the catheter.
  • the implant can be prevented from protruding too far from the distal opening of the catheter. Causes danger, and at the same time avoids the problem of "jacking", thereby effectively improving the safety of the electrolysis device during the implantation process.
  • the electrolytic dehydration device in actual operation, drips an electrolyte such as physiological saline into the catheter, so that the adsorption section can always adsorb the electrolyte, and can ensure that the release section always has a stable electrolyte microcirculation environment that can be electrolytically desorbed. It overcomes the problem of long release time and the need for multiple releases of the existing electrolytic release device, and improves the safety release reliability. Furthermore, it can release the image without forming an "inverted T" image, which can also be pushed to the far end. At the same time when the rod is pushed, the implant's electrolytic removal process starts, so it can also reduce the difficulty of the doctor's operation. You can also wait for the rod to push the implant into place and then remove it electrolytically. A combination of multiple methods is beneficial to different surgical conditions and Complex surgical environment.
  • FIG. 1 is a schematic cross-sectional view of a conventional electrolytic decoupling coil
  • FIG. 2 is a schematic diagram of a flexible member provided at a distal end of a push rod according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an electrolytic decoupling mechanism according to an embodiment of the present invention, in which the adsorption portion is a spring made of a hydrogel material;
  • FIG. 4 is a schematic cross-sectional view of an electrolytic desorption device according to an embodiment of the present invention, in which the adsorption portion is entirely located at the distal end of the flexible member and does not overlap the flexible member;
  • FIG. 5 is a schematic cross-sectional view of an electrolytic desorption device according to an embodiment of the present invention, wherein the proximal end of the adsorption part is inside the flexible part, and the distal end extends out of the flexible part;
  • FIG. 6 is a schematic cross-sectional view of an electrolytic desorption device according to an embodiment of the present invention, in which an adsorption portion is entirely penetrated inside a flexible member;
  • FIG. 7 is a schematic diagram of an electrolytic desorption mechanism according to an embodiment of the present invention, in which the adsorption part is a coating made of a hydrogel material;
  • FIG. 8 is a schematic diagram of an electrolytic desorption mechanism according to an embodiment of the present invention, in which the adsorption part is a pipe made of a hydrogel material;
  • FIG. 9 is a schematic cross-sectional view of the pipe provided in FIG. 8 along a line a-a.
  • distal end is usually the end near the patient's lesion.
  • the core idea of the present invention is to provide an electrolytic decoupling mechanism for cooperating with an electrolytic decoupling device to realize electrolytic decoupling of an implant, which includes an implant, a disengagement part, a conductive part, and an adsorption part.
  • the adsorption part is used to keep the disengagement part and the cathode conductive part continuously in electrical conduction after the electrolyte is adsorbed. Therefore, the reliability of the electrolytic desorption operation can be improved, and the dissolution time of the existing electrolytic desorption device can be overcome. Long, problem that requires multiple reliefs.
  • the present invention also provides an electrolytic stripping device including the electrolytic stripping mechanism.
  • the electrolytic stripping device further includes a conduit and a push rod.
  • the release part can be electrolytically decomposed inside the catheter, and it is not necessary to push the release part out of the distal opening of the catheter to ensure that the release part can contact the electrolyte to form a microcirculation electrolytic release environment, so that the implant can be Safe and effective electrolytic dehydration at any position inside the catheter. In this way, it can avoid the danger that the implant extends beyond the distal opening of the catheter and cause danger. At the same time, it can avoid the problem of "jacking" and effectively improve the electrolytic dehydration device. Safety and reliability during implantation.
  • the adsorption portion can always adsorb the electrolyte, and the release portion can be ensured to have
  • the micro-circulation environment capable of electrolytic stripping overcomes the problems of long stripping time and the need for multiple stripping of the existing electrolytic stripping devices, and improves the reliability of the stripping. Further, since the release of the implant can be achieved without forming an "inverted T" image, and the electrolytic desorption process can be performed at any point in the process of pushing the push rod toward the distal end of the catheter, the doctor can also be reduced. Difficulty of operation.
  • FIG. 2 is a schematic diagram of a flexible member provided at a distal end of a push rod according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an electrolytic decoupling mechanism provided by an embodiment of the present invention
  • FIGS. 4 to 6 are provided by a preferred embodiment of the present invention
  • FIG. 8 are schematic diagrams of the electrolytic desorption mechanism provided by the preferred embodiment of the present invention
  • FIG. 9 is a schematic cross-sectional diagram of the pipe provided along FIG. 8 along the line aa.
  • this embodiment provides an electrolytic dehydration mechanism, which can be used for embolization treatment of hemangiomas, especially intracranial aneurysms, which includes: an implant, a release portion 103, a conductive portion 101, and an adsorption portion. 102.
  • the implant is used to stay in a predetermined location.
  • the implant may be a spring coil 104 for embolizing a hemangioma.
  • One end of the release coil 103 is connected to the spring coil 104, and after the release coil 103 is electrolytically eroded, the connection between the spring coil 104 and the release coil 103 can be released.
  • the material of the release portion 103 is preferably a biocompatible active metal, such as: Mg (magnesium), Zn (zinc), Fe (iron), etc.
  • the material of the release portion 103 can also be selected as Some of the more active alloy materials with biocompatibility, such as magnesium zinc alloy, magnesium iron alloy, stainless steel, etc.
  • the conductive portion 101 includes an anode conductive portion and a cathode conductive portion provided separately, and the anode conductive portion is covered with a first insulating portion.
  • the distal end of the anode conductive portion is connected to the other end of the release portion 103, and the proximal end is used to connect to the positive electrode of an external electrolytic stripper.
  • the proximal end of the cathode conductive part is used for connection with the negative electrode of an external electrolytic stripper.
  • the external electrolytic stripper has a positive electrode and a negative electrode, and is used to provide an electrolytic current to the electrolytic stripping mechanism. Its structure is the prior art, which will not be described in detail here.
  • the first insulating portion is used to electrically insulate the anode conductive portion from the cathode conductive portion.
  • the adsorption portion 102 is configured to electrically conduct the release portion 103 and the cathode conductive portion after the electrolyte is adsorbed, so as to facilitate electrolytic dissolution of the release portion 103.
  • the adsorption part 102 may not be directly connected to the cathode conductive part, the release part 103, or the anode conductive part, as long as the electrolyte solution can make the release part 103 and the cathode conductive part electrically conductive after the expansion or after the chemisorption of the electrolyte.
  • the adsorption portion 102 may be connected to one of the cathode conductive portion, the release portion 103 or the anode conductive portion, or the spring coil 104, and may also be connected to the push rod 201 or the flexible member 202 described below to make the adsorption portion 102 It has a relatively fixed position in the whole electrolytic dehydration device so that it can absorb the electrolyte and work.
  • the anode conductive portion may be a conductive wire whose surface is covered with the first insulating portion as an insulating layer, so that the conductive wire is electrically insulated from the cathode conductive portion, and the release portion 103 is an electric conductor. It is connected to the anode conductive part and exposed to the outside, so that the release part 103 and the cathode conductive part can be electrically connected through the adsorption part 102 after the electrolyte is adsorbed.
  • the implant in the present invention is not limited to the spring coil 104, and may also be an interventional implantable device such as a stent, an artificial valve, or an occluder.
  • the dissociation unit 103 and the cathode conductive unit are electrically connected to form an electrolytic desorption environment for electrolytic dissolution of the dissociation unit 103.
  • the electrical conduction here does not mean that the release part 103 is in direct contact with the cathode conductive part or is electrically connected through the direct connection of an electrical conductor, but that the electrolyte adsorbed by the adsorption part 102 is used to conduct the release part 103 and the cathode conductive part. That is, the release part 103 and the cathode conductive part are actually conducted by an electrolyte.
  • the electrolyte here may be, for example, an electrolyte solution having good biocompatibility such as blood and physiological saline.
  • the adsorption portion 102 adsorbs a similar electrolyte, it can conduct electricity and conduct the release portion 103 and the cathode conductive portion. Since the release portion 103 is connected to the anode conductive portion, after the conductive portion 101 is energized, the release portion 103 reacts electrochemically with the cathode conductive portion, so that the release portion 103 as the anode undergoes electrolytic dissolution, so that the spring After the ring 104 is disconnected from the disengagement portion 103 and leaves the entire electrolytic disengagement mechanism, an aneurysm cavity can be embolized.
  • the adsorption part 102 can continuously conduct the release part 103 and the cathode conductive part after the electrolyte is adsorbed, the reliability of the electrolytic decoupling operation can be improved, and the existing electrolytic decoupling coils due to the instability of the electrolytic environment can be overcome.
  • the adsorption part 102 may connect the dissociation part with the cathode / anode conductive part by expanding or absorbing the electrolyte to make the electrolyte solution.
  • it can be made of hydrogel material or other materials with chemisorption properties.
  • the hydrogel material here refers to a water-absorbing expandable polymer, which has good water retention.
  • the hydrogel material includes a natural polymer hydrogel and an organic synthetic polymer hydrogel.
  • the hydrogel material specifically includes, but is not limited to, a combination of one or more of the following materials: cellulose and its derivative hydrogel; gelatin modified hydrogel; chitosan and its derivative cross-linked water Gel; Hyaluronic acid and its modified cross-linked hydrogel; Polyethylene glycol and its derivative cross-linked hydrogel; Polyvinyl alcohol and its derivative cross-linked hydrogel; Poly-N-methylpyrrolidone and its Derivatives Crosslinked Hydrogels; Polyester Hydrogels; Polyacrylamide and Derivatives Crosslinked Hydrogels; Hydroxyethyl Methacrylate and Derivatives Hydrogels; Derived from One or More Olefins Crosslinked swellable polymers of unsaturated polymerizable carboxylic acid monomers and the like.
  • the adsorption portion 102 can be made of various structural forms from a hydrogel material, for example, it can be made into a spiral structure, such as a spring (as shown in FIG. 3), which wraps the release portion 103, and is used to adsorb the electrolyte and The cathode conductive portion is electrically connected.
  • a micro spring with a helical structure can be made from hydrogel fiber winding or hydrogel wire winding, and the micro spring covers the release portion 103, that is, the spring is entirely sleeved on the release portion 103.
  • a section of the micro spring covering the release section 103 is designed to be sparsely wound.
  • the space for the release section 103 to contact the electrolyte is provided, and on the other hand, the space for expansion of the micro spring is also reserved.
  • the electrolyte after the electrolyte is adsorbed by the hydrogel fiber or the hydrogel thread, it can expand and contact the release portion 103 and the cathode conductive portion, respectively, so as to keep the release portion 103 and the cathode conductive portion in electrical conduction.
  • the adsorption part 102 may be made of a coating layer 102 '(as shown in FIG. 7) made of a hydrogel material, and coated on the release part 103.
  • the hydrogel material may be coated on the surface (preferably the outer surface) of the release portion 103, and the coating here includes partially or entirely coating the surface of the release portion 103.
  • the coating layer 102 'made of the hydrogel material can also expand and contact the cathode conductive portion after the electrolyte is adsorbed, so that the release portion 103 and the cathode conductive portion can maintain electrical conduction.
  • the adsorption portion 102 may be made of a pipe member 102 ′′ (as shown in FIG.
  • the pipe member 102 ′′ may be sleeved and wrapped around the release portion 103.
  • the cross section of the pipe fitting 102 may be a regular circle (as shown in Fig. 9 (A)), a rectangle (as shown in Fig. 9 (B)), a gear shape (as shown in Fig. 9 (C)), or Triangles (as shown in Figure 9 (D)), etc., can also be other polygonal or irregular shapes.
  • the pipe 102 can also expand and contact the cathode conductive portion after the electrolyte is absorbed, so that the release portion 103 and the cathode conductive portion are held. Electrically conductive.
  • This embodiment further provides an electrolytic stripping device, which includes the electrolytic stripping mechanism as described above, and the electrolytic stripping device further includes: a conduit 301 and a push rod 201, wherein the electrolytic stripping Both the mechanism and the pushing rod 201 can be movably inserted in the catheter 301, and the pushing rod 201 is used to cooperate with the catheter 301 to push the electrolytic decoupling mechanism to a target position in the patient, such as Hemangiomas and so on.
  • the stripping section 103 can be electrolytically stripped inside the catheter 301, and the stripping section 103 does not need to be pushed out of the opening of the distal end 303 of the catheter to ensure the stripping.
  • the portion 103 can contact the electrolyte to form a micro-circulation electrolytic de-environment, so that the spring coil 104 can perform safe and effective electrolytic de-ionization at any position inside the catheter 301. In this way, the opening of the spring coil 104 protruding from the distal end 303 of the catheter can be prevented from being too long And cause danger.
  • the spring coil 104 can be electrolyzed inside the catheter 301 near the distal end 303 of the catheter, so that when the spring coil 104 protrudes from the opening of the distal end 303 of the catheter, the released parts such as the spring coil 104 are in the aneurysm Under the resistance of the lumen wall, the opening of the distal end 303 of the catheter is detached from the tumor cavity to cause a “jacking” problem, thereby improving the safety of the electrolysis device during the implantation process.
  • an electrolysis device is used to treat an intracranial aneurysm, it is often necessary to embolize a plurality of coils 104.
  • the coils that have been dissociated can also be passed through the coils that are ionized later. It is pushed out of the opening of the distal end 303 of the catheter into the aneurysm cavity. This is because the spring coil 104 itself is elastic.
  • the first released spring coil does not enter the tumor cavity at the distal end 303 of the catheter, the second spring coil sent through the push rod 201 will move the first The coil is pushed distally into the tumor cavity.
  • the occurrence of the "pipe jacking" problem can be further reduced, and the safety of the electrolytic release device during the implantation process can be further improved.
  • a flexible member 202 is provided at the distal end of the pushing rod 201; the flexible member 202 is made of a flexible material or has a flexible structure, such as a spring structure, and is used to connect with the electrolytic disengagement mechanism to push the The electrolytic disengagement mechanism is described.
  • the flexible member 202 is provided to make the distal end of the push rod 201 softer and easily shuttle through the intracranial curved blood vessels.
  • the pushing rod 201 and the flexible member 202 are both hollow structures.
  • the pushing rod 201 may be a stainless steel hollow pipe body, and the flexible member 202 may be a stainless steel spring.
  • the conductive portion 101 of the electrolytic disengagement mechanism is a double-stranded conductive wire, that is, the anode conductive portion and the cathode conductive portion are both conductive wires.
  • the double-stranded conductive wires are all passed through the push rod 201, and the surfaces of the double-stranded conductive wires are respectively covered with an insulating layer.
  • the anode conductive portion of the electrolytic disengagement mechanism is covered with a first insulating portion, and the cathode conductive portion is covered with a second insulating portion, so that the anode conductive portion and the cathode conductive portion are electrically insulated from each other.
  • the distal end of the cathode conductive portion is disposed close to the release portion 103 and is exposed to the outside of the second insulation portion, and can be in contact with the adsorption portion 102 after the electrolyte is adsorbed. In this way, the cathode conductive part and the release part 103 can be electrically connected with each other through the adsorption part 102.
  • a third insulating portion is further coated on the outside of the conductive portion 101, that is, the anode conductive portion is covered with the first insulating portion and the cathode conductive portion is covered with the second insulating portion.
  • the outside is also covered with a layer of insulation to further ensure that the conductive portion 101 and the push rod 201 are electrically insulated from each other.
  • only the anode conductive part of the electrolytic disengagement mechanism is passed through the push rod 201 and the flexible member 202, and the push rod 201 and the flexible member 202 are configured as the cathode together. Conductive part.
  • the distal end of the flexible member 202 is disposed close to the release portion 103 and can be in contact with the adsorption portion 102 after the electrolyte is adsorbed.
  • the push rod 201 and the flexible member 202 as the cathode conductive portion can be electrically connected to the release portion 103 through the adsorption portion 102. Since the anode conductive part is covered with the first insulation part, it can be guaranteed to be electrically insulated from the push rod 201 and the flexible member 202.
  • the external electrolytic separator supplies a current to the conductive part 101, the current is passed from the positive electrode of the electrolytic separator through the anode.
  • the conductive part is conducted to the release part 103, and then the flexible part 202 is conducted to the flexible part 202 via the absorbent part 102 after absorbing the electrolyte, and then to the push rod 201 through the flexible part 202, and finally flows to the negative electrode of the electrolytic separator through the push rod 201, thus forming Current loop.
  • the release portion 103 is electrochemically corroded and disconnected, so that the spring coil 104 is dissociated.
  • the suction portion 102 and the flexible piece 202 are arranged side by side along the axial direction of the flexible piece 202, and the suction portion 102 is located at a distal end of the flexible piece 202, so that the suction portion 102 and the The flexible member 202 does not overlap in the axial direction of the flexible member 202.
  • the adsorption portion 102 is provided from the distal end of the flexible member 202, and the adsorption portion 102 and the flexible member 202 are staggered from each other in the axial direction of the flexible member 202 without overlapping.
  • This solution is more suitable for the case where the conductive part 101 is a double-stranded conductive wire, and the part of the release part 103 and the cathode conductive part exposed outside the second insulation part is covered by the adsorption part 102.
  • the adsorption part 102 adsorbs After the electrolyte, it swells and comes into contact with the release portion 103 and the portion of the cathode conductive portion exposed outside the second insulation portion at the same time.
  • the release portion 103 and the cathode conductive portion can be electrically conducted through the adsorption portion 102.
  • a part of the adsorption part 102 is passed through the flexible member 202.
  • the proximal end of the adsorption part 102 is within the flexible member 202, and the The distal end of the adsorption part 102 protrudes from the distal end of the flexible member 202 such that the adsorption part 102 partially overlaps the flexible member 202 in the axial direction of the flexible member 202.
  • the adsorption portion 102 is entirely penetrated in the flexible member 202, so that the adsorption portion 102 is aligned with the flexible member 202 in the axial direction of the flexible member 202. All overlap. It should be understood that all overlapping here means that the flexible member 202 covers the adsorption portion 102 in the axial direction, but the length of the flexible member 202 may be greater than or equal to the length of the adsorption portion 102.
  • the case where the adsorption portion 102 and the flexible member 202 partially overlap or completely overlap along the axial direction of the flexible member 202 is more suitable for the case where the push rod 201 and the flexible member 202 are commonly configured as a cathode conductive portion.
  • the adsorption section 102 only covers the release section 103, and the adsorption section 102 at least partially overlaps the flexible member 202. Therefore, when the adsorption section 102 adsorbs the electrolyte, it swells and can be conductive with the release section 103 and the cathode at the same time.
  • the flexible member 202 of the outer portion is in contact with each other to electrically conduct the two.
  • the adsorption portion 102 may be a micro spring made of hydrogel fiber, and the flexible member 202 may be a stainless steel spring. A part or all of the micro spring is placed inside the stainless steel spring, and the inside of the micro spring is covered with Shed section 103.
  • the push rod 201 may also be a solid push rod, such as a stainless steel solid push rod, and configured as a cathode conductive portion, and an anode conductive portion of the conductive portion 101 may be optionally covered.
  • a conductive wire with a first insulating portion and the conductive portion 101 can be arranged side by side with the solid pushing rod in the radial direction, instead of being passed through the solid pushing rod.
  • the conductive part 101 and the solid pushing rod can be fixed by some fixing points, for example, by means of tying and gluing.
  • a flexible member 202 may also be provided at the distal end of the solid pushing rod to increase the flexibility of the distal end and facilitate the passage through tortuous blood vessels.
  • the release portion 103 may be arranged side by side with the flexible member 202 in the radial direction.
  • the adsorption portion 102 may be made of a solid hydrogel material or a material having chemisorption performance. Both ends of the adsorption portion 102 and the release portion 103 are respectively In contact with the flexible member 202. With such a configuration, the release portion 103 and the cathode conductive portion can also be electrically connected through the adsorption portion 102. Of course, the release portion 103 can also penetrate into the flexible member 202 as described in the above embodiment.
  • the flexible member 202 has a first developing portion 203, and a distal end 303 of the catheter 301 is provided with a second developing portion 302.
  • Each of the second developing sections 302 is made of a developing material, and is used to display the position of itself under X-rays.
  • the first developing section 203 may be made of a material different from the other parts of the flexible member 202 and is easy to develop, such as a metal such as platinum.
  • the flexible member 202 can be determined through the monitor.
  • the relative position and distance from the distal end 303 of the catheter 301 help the doctor to determine the specific electrolytic off-time of the spring coil 104.
  • This embodiment also provides a method for operating an electrolytic desorption device using the electrolytic desorption device as described above.
  • the method includes:
  • Step 1 push the catheter 301 to a predetermined position in the body (such as near a hemangioma), and continuously instill a saline solution at the proximal end of the catheter 301, so that the adsorption portion 102 adsorbs the saline solution;
  • Step 2 push the push rod 201 toward the distal end of the catheter 301 to a predetermined release position
  • Step three energize the conductive portion 101 to electrolytically dissolve the release portion 103;
  • Step 4 After the dissolution part 103 is electrolytically eroded, even if the spring coil 104 is disconnected from the disengagement part 103, the spring coil 104 can reach the inside of the hemangioma, thereby plugging the hemangioma cavity.
  • step 1 when the push rod 201 is used, the doctor continuously injects saline into the catheter 301, and the adsorption portion 102 located on the release portion 103 absorbs the saline and expands, and makes the release portion 103 and the cathode conductive.
  • the contact portion is kept in continuous contact, and at this time, the release portion 103 has a conductive environment that is electrolytically detached.
  • the release point needs to protrude out of the microcatheter to ensure sufficient contact with electrolytes such as blood, and then start electrolytic desorption.
  • the method provided in this embodiment can make the adsorption unit 102 adsorb during the pushing process.
  • the electrolyte can maintain continuous adsorption of the electrolyte, so that the conductor environment of electrolytic desorption is better than the prior art, thereby improving the reliability of electrolytic desorption and avoiding multiple electrolytic desorptions.
  • step two the setting of the predetermined release position is a different setting according to the condition of different patients, and it is generally determined and set by itself based on the experience of a doctor.
  • step 3 the conductive part 101 is energized, so that the current is conducted from the positive electrode of the external electrolytic separator to the conductive part of the cathode through the anode conductive part, the release part 103, and the physiological saline, and then to the electrolytic part.
  • the negative electrode of the device forms a current loop; under the continuous conduction of current, electrolytic dissolution occurs in the release portion 103, so that the spring coil 104 is dissociated.
  • the relative distance between the first developing portion 203 and the second developing portion 302 can be observed by X-rays, and when the first developing portion When the distance between the part 203 and the second developing part 302 is not greater than a predetermined distance, the pushing of the pushing rod 201 is stopped.
  • the predetermined distance here can be set according to the structure of the actual electrolytic decoupling device and the needs of the operation.
  • the doctor can observe the relative position and distance between the first developing section 203 and the second developing section 302 by X-rays, determine the advancement depth of the push rod 201, and compare and cross-reference with the predetermined release position.
  • the release portion 103 does not need to extend out of the catheter 301, it can ensure sufficient contact with the electrolyte and complete the ionization of the spring coil 104, thereby effectively ensuring that the spring coil 104 does not protrude beyond the catheter and cause danger when it is ionized. , To avoid the problem of "jacking”, thereby improving the safety of pushing, and overcoming the existing problem of the need to form an "inverted T" image to ensure the release of the spring coil.
  • the conductive portion 101 can be energized; or, the first developing portion 203 and the second developing portion 302 can also be used.
  • the distance is not greater than a predetermined distance, and after the pushing of the pushing rod 201 is stopped, the conductive part 101 is energized.
  • the adsorption unit 102 swells and continuously absorbs electrolyte (physiological saline or blood) after contacting the saline solution continuously dripped into the catheter 301 or through contact with blood.
  • the release unit 103 can always ensure that the release unit 103 has
  • the circulatory environment overcomes the problem that the existing electrolytic decoupling coil has a long release time and requires multiple releases, and improves the safety release reliability.
  • the electrolysis release mechanism can be stopped after the push rod 201 pushes the electrolysis release mechanism near the distal end 303 of the catheter, so that the electrolysis release can be started, so that the spring coil 104 can be located far away from the catheter after being electrolyzed.
  • the opening of the end 303 is convenient for the spring coil 104 to reach and plug the predetermined position.
  • electrolysis can also be started in the catheter 301, and the subsequent spring coils 104 can be used to eject the previous spring coils 104, which can be selected according to the needs of the surgery. Since it is not necessary to form an "inverted T" image, it can be released, that is, the electrolytic removal can be started inside the catheter 301. This method can also reduce the difficulty of the doctor's operation. It can be started at the same time as the push rod 201 is pushed distally The process of electrolytic removal. Of course, after the push rod 201 is pushed in place, the process of electrolytic removal can be started. A combination of multiple methods is beneficial to different surgical situations and complicated surgical environments.
  • the electrolytic desorption mechanism provided by the embodiment of the present invention adsorbs the electrolyte through the adsorption part
  • the dissociation part and the cathode conductive part continue to maintain electrical conduction, thereby forming a stable electrolytic desorption environment for electrolytic dissolution of the dissociation part.
  • the release part connected to the anode conductive part is electrochemically reacted with the cathode conductive part to cause electrolytic dissolution of the release part itself. In this way, the implant is disconnected from the release part and leaves the entire electrolytic release mechanism for indwelling. At a predetermined location.
  • the adsorption part can continuously conduct the release part and the cathode conductive part after the electrolyte is adsorbed, it can improve the reliability of the electrolytic removal operation, and overcome the long release time of the existing electrolytic removal device, which requires multiple times.
  • the problem of liberation improves the reliability of safe liberation.
  • the stripping section can be electrolytically stripped inside the catheter, and the stripping section does not need to be pushed out of the distal opening of the catheter to ensure that The release part can contact the electrolyte to form a stable microcirculation electrolytic desorption environment, so that the implant can be safely and effectively electrolyzed at any position inside the catheter.
  • the implant can be prevented from protruding too far from the distal opening of the catheter. causess danger, and also avoids the problem of "pipe jacking", thereby effectively improving the safety of the electrolysis device during the implantation process.
  • the electrolytic dehydration device provided in the embodiment of the present invention is in actual operation, by injecting physiological saline into the catheter, the adsorption section can always adsorb the electrolyte, which can ensure that the desorption section always has a stable electrolyte microcirculation environment capable of electrolytic desorption, which overcomes
  • the existing electrolytic disengagement device has a long release time and requires multiple releases, which improves the safety release reliability.
  • it since it is not necessary to form an "inverted T" image, it can be released, and the push rod can be pushed to the far end.
  • the electrolytic removal process of the implant is started, so it can also reduce the difficulty of the doctor's operation.
  • the combination of multiple methods is conducive to different surgical conditions and complex surgical environments.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Reproductive Health (AREA)
  • Neurosurgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)

Abstract

电解脱机构以及电解脱装置，电解脱机构用于与电解脱器配合，实现植入物的电解脱，电解脱机构包括植入物、解脱部(103)、导电部(101)和吸附部(102)，吸附部(102)在吸附电解质后能够使解脱部(103)与阴极导电部持续保持电导通，以此提高电解脱操作的可靠性，克服现有的电解脱装置的解脱时间长，需要多次解脱的问题。电解脱装置采用电解脱机构，故而使得解脱部(103)在导管(301)的内部即可进行电解脱，不必将解脱部(103)推出导管(301)的远端开口，可避免植入物伸出导管(301)的远端开口过长而引发危险，以及避免"顶管"问题的发生，从而有效地提高电解脱装置在植入过程中的安全性和可靠性。

Description

电解脱机构以及电解脱装置 技术领域
本发明涉及医疗器械领域，特别涉及一种电解脱机构以及电解脱装置。
背景技术
颅内血管瘤是血管异常改变造成的血管的瘤样凸起，尤其是颅内动脉瘤，当血管内血压突然升高，颅内动脉瘤破裂出血，会造成患者残疾或死亡。自1991年Guglielmi等首次报道Guglielmi detachable coil(电解脱弹簧圈)治疗颅内动脉瘤以来，随着材料及治疗设备的发展，弹簧圈的栓塞治疗已成为颅内动脉瘤的主要治疗手段。
请参考图1，其是现有的电解脱弹簧圈的剖面示意图，该电解脱弹簧圈包括微导管10、推送杆20、导电丝30、弹簧圈40和解脱点31。所述微导管10的远端开口12保持在近瘤颈处，所述推送杆20穿设于所述微导管10的内部，所述推送杆20的内部设置导电丝30，所述导电丝30的近端与外部解脱器(未图示)电连接，所述导电丝30的远端通过解脱点31与弹簧圈40连接。所述推送杆20的远端设置弹性件21，所述弹性件21用于使推送杆20的远端更为柔软，易于穿梭通过颅内弯曲血管，所述微导管10的远端设有第一显影区域11，所述弹性件21设有第二显影区域22，医生通过观察第一显影区域11与第二显影区域22的相互位置关系，判断推送杆20在微导管10中的行进位置，进而判断弹簧圈40是否进入动脉瘤腔。
如图1所示，在解脱弹簧圈40时，往往需要第一显影区域11与第二显影区域22形成“倒T”影像，亦即第二显影区域22向微导管10的远端延伸，并完全越过第一显影区域11，才能确保解脱点31从微导管10的远端开口12中伸出，从而能够使解脱点31接触血液，使解脱点31具有电解脱的解脱环境，此时，才能实施对解脱点31通电的电解操作，而后使弹簧圈40脱离。然而，发明人发现，受限于微导管10、推送杆20各自的公差，在第一显影区域11与第二显影区域22形成“倒T”影像时，存在解脱点31未能伸出微导管10的远端开口12的情况，此时，需要医生反复多次操作，才能使得弹簧 圈40顺利解脱。并且，由于接触血液后的电解环境存在不稳定性，包括血液和血栓等影响因素综合形成随机的电解环境，可能导致解脱时间过长的问题。除此之外，还存在解脱点31伸出微导管10的远端开口12过多的情况，此时，超出远端开口12的解脱点31和推送杆20容易戳坏动脉瘤而引发破裂危险。此外，通过推送杆20将未解脱的弹簧圈40推出微导管10的远端开口12时，有时会发生包括弹簧圈40近端在内的整个解脱区域使得微导管10脱离瘤腔的情况，这种现象称之为“顶管”效应，这时亦会引发危险。
因此，有必要开发一种新型的电解脱机构以及电解脱装置，以解决现有的电解脱弹簧圈需要多次操作解脱，以及解脱点需伸出微导管后电解脱易引发危险等问题。
发明内容
本发明的目的在于提供一种电解脱机构以及电解脱装置，以解决现有电解脱装置存在的解脱可靠性低以及伸出微导管过长而易引发危险等问题。
为解决上述技术问题，本发明提供一种电解脱机构，用于与电解脱器配合，实现植入物的电解脱，其特征在于，包括：
植入物；
解脱部，所述解脱部的远端与所述植入物连接，且所述解脱部被配置为能够通过电导通电解溶蚀，以解除所述植入物与所述解脱部之间的连接；
导电部，包括：
阳极导电部，所述阳极导电部包覆有第一绝缘部，且所述阳极导电部的远端与所述解脱部的近端连接，所述阳极导电部的近端用于与所述电解脱器的正极连接；以及
阴极导电部，所述阴极导电部的近端用于与所述电解脱器的负极连接，并且所述阴极导电部通过所述第一绝缘部与所述阳极导电部电绝缘；
以及
吸附部，用以在吸附电解质后使所述解脱部与所述阴极导电部电导通。
可选的，所述吸附部由水凝胶材料制成。
可选的，所述吸附部包裹所述解脱部。
可选的，所述吸附部为螺旋结构或中空管件，套接在所述解脱部上。
可选的，所述吸附部涂覆在所述解脱部上。
可选的，所述水凝胶材料选自以下材料中的一种或多种的组合：纤维素及其衍生物水凝胶；明胶改性水凝胶；壳聚糖及其衍生物交联水凝胶；透明质酸及其改性交联水凝胶；聚乙二醇及其衍生物交联水凝胶；聚乙烯醇及其衍生物交联水凝胶；聚N-甲基吡咯烷酮及其衍生物交联水凝胶；聚酯类水凝胶；聚丙烯酰胺及其衍生物交联水凝胶；衍生自一种或多种烯烃不饱和可聚合羧酸单体的交联可膨胀聚合物；以及甲基丙烯酸羟乙酯及其衍生物水凝胶。
为解决上述技术问题，本发明还提供一种电解脱装置，包括如上所述的电解脱机构，且还包括：
导管；以及
推送杆，与所述电解脱机构的近端相连接；
其中，所述电解脱机构与所述推送杆均可活动地穿设于所述导管内，且所述推送杆用于与所述导管相配合，将所述电解脱机构推送至目标位置。
可选的，所述推送杆的远端设置有一柔性件，所述推送杆通过所述柔性件与所述电解脱机构连接。
可选的，所述推送杆与所述柔性件均为中空结构，所述导电部穿设于所述推送杆与所述柔性件中；所述阴极导电部包覆有第二绝缘部，以与所述推送杆和所述柔性件电绝缘，所述阴极导电部的远端暴露于所述第二绝缘部之外并能够与所述解脱部通过所述吸附部电导通。
可选的，所述推送杆与所述柔性件均为中空结构，所述阳极导电部穿设于所述推送杆与所述柔性件中，且所述推送杆与所述柔性件共同被配置作为所述阴极导电部。
可选的，所述吸附部与所述柔性件沿轴向并列设置，并且所述吸附部位于所述柔性件的远端。
可选的，所述吸附部的近端在所述柔性件内，且所述吸附部的远端从所述柔性件的远端伸出。
可选的，所述吸附部整个在所述柔性件的内部。
可选的，所述柔性件具有第一显影部，所述导管的远端设有第二显影部，所述第一显影部和所述第二显影部均由显影材料制成。
本发明提供的电解脱机构以及电解脱装置取得了如下有益效果：
第一、本发明提供的电解脱机构通过吸附部吸附电解质后，使解脱部与阴极导电部持续保持电导通，从而形成供解脱部电解溶蚀的电解脱环境，故而在对导电部通电后，与阳极导电部连接的解脱部即与阴极导电部发生电化学反应，使解脱部自身发生电解溶蚀，如此，使得植入物与解脱部脱离连接并离开整个电解脱机构；相比现有技术，由于吸附部在吸附电解质后能够持续导通解脱部与阴极导电部，形成稳定的电解环境，故而能够提高电解脱操作的可靠性，克服了现有电解脱装置的解脱时间长，需要多次解脱的问题，提高了安全解脱可靠性。
第二、在本发明提供的电解脱装置中，由于采用上述电解脱机构，故而能够使得解脱部在导管的内部即可进行电解脱，不必将解脱部推出导管的远端开口，即可确保解脱部能够接触电解质而形成稳定的电解质微循环电解脱环境，使得植入物可在导管的内部任意位置进行安全有效的电解脱，如此，可避免植入物伸出导管的远端开口过长而引发危险，同时避免“顶管”问题的发生，从而有效地提高电解脱装置在植入过程中的安全性。
第三、本发明提供的电解脱装置在实际操作时，通过向导管滴注生理盐水等电解质，使吸附部始终能够吸附电解质，可确保解脱部始终具有可电解脱的稳定的电解质微循环环境，克服了现有的电解脱装置的解脱时间长，需要多次解脱的问题，提高了安全解脱可靠性；进一步地，由于无需形成“倒T”影像即可解脱，亦即可在向远端推动推送杆的同时即开始植入物的电解脱过程，故还可降低医生操作的难度，也可以待推送杆将植入物推送到位后再电解脱，多种方法组合，利于不同的手术情况和复杂的手术环境。
附图说明
本领域的普通技术人员需理解，提供的附图用于更好地理解本发明，而 不对本发明的范围构成任何限定。附图中：
图1是现有的电解脱弹簧圈的剖面示意图；
图2是本发明一实施例提供的推送杆的远端设置有柔性件的示意图；
图3是本发明一实施例提供的电解脱机构的示意图，其中吸附部为水凝胶材料制成的弹簧；
图4是本发明一实施例提供的电解脱装置的剖面示意图，其中的吸附部整个位于柔性件的远端且与柔性件不重叠；
图5是本发明一实施例提供的电解脱装置的剖面示意图，其中的吸附部的近端在柔性件的内部，远端伸出柔性件；
图6是本发明一实施例提供的电解脱装置的剖面示意图，其中的吸附部整个穿设在柔性件的内部；
图7是本发明一实施例提供的电解脱机构的示意图，其中的吸附部为水凝胶材料制成的涂层；
图8是本发明一实施例提供的电解脱机构的示意图，其中吸附部为水凝胶材料制成的管件；
图9是图8提供的管件在沿a-a连线的剖面示意图。
附图标记说明：
10-微导管；11-第一显影区域；12-远端开口；20-推送杆；21-弹性件；22-第二显影区域；30-导电丝；31-解脱点；40-弹簧圈；
101-导电部；102-吸附部；102’-涂层；102”-管件；103-解脱部；104-弹簧圈；201-推送杆；202-柔性件；203-第一显影部；301-导管；302-第二显影部；303-导管的远端。
具体实施方式
为使本发明的目的、优点和特征更加清楚，以下结合附图和具体实施例对本发明作进一步详细说明。需说明的是，附图均采用非常简化的形式且未按比例绘制，仅用以方便、明晰地辅助说明本发明实施例的目的。此外，附图所展示的结构往往是实际结构的一部分。特别的，各附图需要展示的侧重 点不同，有时会采用不同的比例。
如在本说明书和所附权利要求书中所使用的，单数形式“一”、“一个”以及“该”包括复数对象，除非内容另外明确指出外。如在本说明书和所附权利要求中所使用的，术语“或”通常是以包括“和/或”的含义而进行使用的，除非内容另外明确指出外，术语“近端”通常是靠近术者的一端，术语“远端”通常是靠近患者病变部位的一端。
本发明的核心思想在于提供一种电解脱机构，用于与电解脱器配合，实现植入物的电解脱，其包括植入物、解脱部、导电部和吸附部。与现有技术相比，所述吸附部用以在吸附电解质后使解脱部与阴极导电部持续保持电导通，故而能够提高电解脱操作的可靠性，克服了现有的电解脱装置的解脱时间长，需要多次解脱的问题。
本发明还提供一种包含所述电解脱机构的电解脱装置，该电解脱装置还包括导管和推送杆。实际操作时，所述解脱部在导管的内部即可进行电解脱，不必将解脱部推出导管的远端开口，即可确保解脱部能够接触电解质而形成微循环电解脱环境，使得植入物可在导管的内部任意位置进行安全有效的电解脱，如此，可避免植入物伸出导管的远端开口过长而引发危险，同时避免“顶管”问题的发生，从而有效地提高电解脱装置在植入过程中的安全性和可靠性。
更具体而言，在体内植入所述植入物的过程中，通过向导管滴注生理盐水或其他适于注入人体内的电解质溶液，使吸附部始终能够吸附电解质，可确保解脱部始终具有可电解脱的微循环环境，克服了现有的电解脱装置的解脱时间长、需要多次解脱的问题，提高了解脱的可靠性。进一步地，由于无需形成“倒T”影像即可实现植入物的解脱，亦即可在向导管的远端推动推送杆的过程中的任意时间点实施电解脱的过程，故还可降低医生操作的难度。
下面参考附图进行详细描述。图2是本发明一实施例提供的推送杆的远端设置有柔性件的示意图，图3是本发明一实施例提供的电解脱机构的示意图，图4至图6为本发明优选实施例提供的电解脱装置的剖面示意图，图7 和图8是本发明优选实施例提供的电解脱机构的示意图，图9为图8提供的管件在沿a-a连线的剖面示意图。
首先请参考图3，本实施例提供了一种电解脱机构，可用于实现血管瘤，特别是颅内动脉瘤的栓塞治疗，其包括：植入物、解脱部103、导电部101和吸附部102。其中，植入物用以留置于一预定部位，具体的，所述植入物可为弹簧圈104，其用以栓塞血管瘤。所述解脱部103的一端与所述弹簧圈104连接，且当所述解脱部103电解溶蚀后，即可解除所述弹簧圈104与所述解脱部103之间的连接。其中，所述解脱部103的材料优选为具有生物相容性的活泼金属，例如：Mg(镁)、Zn(锌)、Fe(铁)等，当然所述解脱部103的材料还可选为一些具有生物相容性的较活泼的合金材料，例如镁锌合金、镁铁合金、不锈钢等。
此外，所述导电部101包括分开设置的阳极导电部和阴极导电部，所述阳极导电部包覆有第一绝缘部。且所述阳极导电部的远端与所述解脱部103的另一端连接，近端用于与外部的电解脱器的正极连接。所述阴极导电部的近端用于与外部的电解脱器的负极连接。这里，外部的电解脱器具有正极和负极，用于向电解脱机构提供电解的电流，其结构为现有技术，此处不再详细叙述。另外，所述第一绝缘部用以使所述阳极导电部与所述阴极导电部电绝缘。
特别的，所述吸附部102用以在吸附电解质后，使所述解脱部103与所述阴极导电部电导通，以便于电解溶蚀解脱部103。这里，吸附部102可以不与阴极导电部、解脱部103或阳极导电部直接连接，只要其膨胀后或者通过化学吸附电解质后，电解质溶液能使解脱部103与阴极导电部电导通即可。为了设置方便，吸附部102可以与阴极导电部、解脱部103或阳极导电部其中之一，或者弹簧圈104连接，还可以与下述的推送杆201或柔性件202连接，以使吸附部102于整个电解脱装置中具有一个相对固定的位置，以便其吸收电解质而起效。
具体的，所述阳极导电部可为一导电丝，其表面包覆有所述第一绝缘部作为绝缘层，以使得该导电丝与阴极导电部电绝缘，并且所述解脱部103为 电导体并与所述阳极导电部连接，且对外暴露，这样，使得解脱部103与阴极导电部可通过吸附电解质后的吸附部102实现电导通。需要说明的，本发明中的植入物并不限于弹簧圈104，也可以是支架、人工瓣膜、封堵器等介入类可植入器械。
由此，通过吸附部102吸附电解质后，电导通解脱部103与阴极导电部，从而形成供解脱部103电解溶蚀的电解脱环境。需理解，此处的电导通，不是指解脱部103与阴极导电部直接接触或通过电导体直接连接而电导通，而是指由吸附部102吸附的电解质来导通解脱部103与阴极导电部，即解脱部103与阴极导电部实际是通过电解质来导通的。这里的电解质，例如可以是血液、生理盐水等具有较好生物相容性的电解质溶液，吸附部102在吸附类似电解质后，即可导电，并将解脱部103与阴极导电部导通。由于解脱部103是与阳极导电部连接的，故而在对导电部101通电后，解脱部103即与阴极导电部发生电化学反应，使作为阳极的解脱部103自身发生电解溶蚀，如此，使得弹簧圈104与解脱部103脱离连接并离开整个电解脱机构后，能够栓塞一血管瘤腔。相比现有技术，由于吸附部102在吸附电解质后能够持续导通解脱部103与阴极导电部，故而能够提高电解脱操作的可靠性，克服了现有的电解脱弹簧圈由于电解环境的不稳定性而导致解脱时间长，且可能需要多次解脱的问题，提高了安全解脱可靠性，能够解决现有电解脱弹簧圈解脱可靠性低的问题。
进一步的，所述吸附部102可以通过膨胀或者吸附电解质使电解质溶液将解脱部与阴极/阳极导电部连接起来。例如可由水凝胶材料或其它具化学吸附性能的材料制成。这里的水凝胶材料指吸水可膨胀聚合物，其具有很好的保水性。具体的，所述水凝胶材料包括天然高分子水凝胶及有机合成类高分子水凝胶。所述水凝胶材料具体包含但不限于以下材料中的一种或多种的组合：纤维素及其衍生物水凝胶；明胶改性水凝胶；壳聚糖及其衍生物交联水凝胶；透明质酸及其改性交联水凝胶；聚乙二醇及其衍生物交联水凝胶；聚乙烯醇及其衍生物交联水凝胶；聚N-甲基吡咯烷酮及其衍生物交联水凝胶；聚酯类水凝胶；聚丙烯酰胺及其衍生物交联水凝胶；甲基丙烯酸羟乙酯及其 衍生物水凝胶；衍生自一种或多种烯烃不饱和可聚合羧酸单体的交联可膨胀聚合物等。
更进一步，所述吸附部102可由水凝胶材料制成多种结构形态，例如可制成螺旋结构，如弹簧(如图3所示)，包裹所述解脱部103，用以吸附电解质后与所述阴极导电部电连接。具体来讲，可由水凝胶纤维缠绕或者水凝胶丝线绕制制成螺旋结构的微小弹簧，并且，所述微小弹簧包覆所述解脱部103，即弹簧整个套接在解脱部103上。优选的，包覆解脱部103的一段微小弹簧设计为稀疏绕制，一方面提供给解脱部103接触电解质的空间，另一方面也预留了微小弹簧膨胀的空间。如此，在水凝胶纤维或水凝胶丝线吸附电解质后，能够膨胀并分别接触解脱部103与阴极导电部，以使解脱部103与阴极导电部保持电导通。
在另一些实施例中，所述吸附部102可由水凝胶材料制成涂层102’(如图7所示)，涂覆于所述解脱部103。具体的，可将水凝胶材料涂覆于解脱部103的表面(优选外表面)，这里的涂覆包括将解脱部103的表面部分涂覆或全部涂覆。该水凝胶材料制成的涂层102’在吸附电解质后亦可膨胀并与阴极导电部接触，使解脱部103与阴极导电部保持电导通。在其他一些实施例中，所述吸附部102可由水凝胶材料制成管件102”(如图8所示)，该管件102”可套设包裹于所述解脱部103。所述管件102”的横截面可为规则的圆形(如图9(A)所示)、矩形(如图9(B)所示)、齿轮形(如图9(C)所示)或三角形(如图9(D)所示)等，还可以是其他多边形或不规则的形态，管件102”在吸附电解质后亦可膨胀并与阴极导电部接触，使解脱部103与阴极导电部保持电导通。
请参考图2至图4，本实施例还提供一种电解脱装置，其包括如上所述的电解脱机构，且所述电解脱装置还包括：导管301和推送杆201，其中所述电解脱机构与所述推送杆201均可活动地穿设于所述导管301内，所述推送杆201用于与所述导管301相配合，将所述电解脱机构推送至患者体内的目标位置，如血管瘤腔等。本实施例提供的电解脱装置由于采用上述电解脱机构，故而能够使得解脱部103在导管301的内部即可进行电解脱，不必将解脱部 103推出导管的远端303的开口，即可确保解脱部103能够接触电解质而形成微循环电解脱环境，使得弹簧圈104可在导管301的内部任意位置进行安全有效的电解脱，如此，可避免弹簧圈104伸出导管的远端303的开口过长而引发危险。较佳地，弹簧圈104可在靠近导管的远端303处的导管301内部进行电解离，可避免弹簧圈104伸出导管的远端303的开口时，弹簧圈104等解脱的部分在动脉瘤腔壁的阻力下，使得导管的远端303的开口脱离瘤腔而发生“顶管”问题，从而提高电解脱装置在植入过程中的安全性。一般的，电解脱装置用于治疗颅内动脉瘤时，往往需要栓塞多个弹簧圈104，当按照上述方式进行电解离后，已经解离的弹簧圈还可通过在其后电解离的弹簧圈将其推出导管的远端303的开口而进入动脉瘤的瘤腔中。这是由于弹簧圈104本身是有弹性的，当第一个解脱后的弹簧圈在导管的远端303未进入瘤腔时，第二个经由推送杆201送入的弹簧圈会将第一个弹簧圈推向远端，而进入瘤腔。由此，可进一步减少“顶管”问题的发生，进一步提高电解脱装置在植入过程中的安全性。
优选的，所述推送杆201的远端设置有一柔性件202；所述柔性件202由柔性材料制成或者具有柔性结构，例如弹簧结构，且用以与所述电解脱机构相连接以推送所述电解脱机构。这里，柔性件202的设置用于使得推送杆201的远端变得更柔软而易于穿梭通过颅内弯曲血管。
如图4所示，下面详细介绍电解脱装置的具体结构。所述推送杆201与所述柔性件202均为中空结构，例如，推送杆201可以是不锈钢中空管体，柔性件202可以是不锈钢弹簧。优选的，所述电解脱机构之导电部101为双股导电丝，亦即阳极导电部和阴极导电部均为导电丝。所述双股导电丝均穿设于推送杆201中，且双股导电丝的表面分别包覆有绝缘层。亦即，在上述电解脱机构之阳极导电部包覆有第一绝缘部之外，所述阴极导电部包覆有第二绝缘部，使阳极导电部和阴极导电部彼此电绝缘。所述阴极导电部的远端与解脱部103靠近设置，且暴露于所述第二绝缘部外，并能够与吸附电解质后的吸附部102接触。如此配置，使阴极导电部可与所述解脱部103通过所述吸附部102电导通。优选的，导电部101的外侧还包覆有第三绝缘部，亦 即在阳极导电部包覆有第一绝缘部和阴极导电部包覆有第二绝缘部之外，在双股导电丝的外侧还包覆了一层绝缘层，进一步保证导电部101与推送杆201之间相互电绝缘。在另外一些实施例中，仅电解脱机构之阳极导电部穿设于所述推送杆201与所述柔性件202中，而将所述推送杆201与所述柔性件202共同配置为所述阴极导电部。此时，所述柔性件202的远端与解脱部103靠近设置，并能够与吸附电解质后的吸附部102接触。如此配置，亦能使作为阴极导电部的推送杆201和柔性件202与解脱部103通过吸附部102电导通。由于阳极导电部包覆有第一绝缘部，故而可以保证与推送杆201和柔性件202电绝缘，当外部的电解脱器向导电部101提供电流时，电流由电解脱器的正极电极经由阳极导电部传导至解脱部103处，经由吸收电解质后的吸收部102被传导至柔性件202，再通过柔性件202传导至推送杆201，最后通过推送杆201流向电解脱器的负极电极，如此形成电流回路。在电流的持续导通下，解脱部103即发生电化学腐蚀而断开，使弹簧圈104被解离。
优选的，所述吸附部102与所述柔性件202沿所述柔性件202的轴向并列设置，并且所述吸附部102位于所述柔性件202的远端，使得所述吸附部102与所述柔性件202在所述柔性件202的轴向上不重叠。如图4所示，所述吸附部102自柔性件202的远端起设置，吸附部102与柔性件202在柔性件202的轴向上相互错开而不重叠。该方案比较适合于导电部101为双股导电丝的情况，解脱部103与阴极导电部暴露出所述第二绝缘部外的部分，均被所述吸附部102包覆，当吸附部102吸附电解质后，发生膨胀，并同时与解脱部103和阴极导电部暴露出所述第二绝缘部外的部分接触，如此配置，可实现解脱部103与阴极导电部通过吸附部102而电导通。
在另一些实施例中，如图5所示，所述吸附部102的部分穿设在所述柔性件202内，具体的，所述吸附部102的近端在柔性件202内，且所述吸附部102的远端从所述柔性件202的远端伸出，使得所述吸附部102在所述柔性件202的轴向上与所述柔性件202部分重叠。
在其他实施例中，如图6所示，所述吸附部102整个穿设在所述柔性件202内，使得所述吸附部102在所述柔性件202的轴向上与所述柔性件202全 部重叠。需理解，这里的全部重叠，指柔性件202沿轴向全部覆盖吸附部102，但柔性件202的长度可大于或等于吸附部102的长度。
在上述实施例中，所述吸附部102与柔性件202沿柔性件202的轴向上部分重叠或完全重叠的情况，比较适合于将推送杆201与柔性件202共同配置为阴极导电部的情况下。此时，吸附部102仅包覆解脱部103，而吸附部102又至少有部分与柔性件202重叠，故而当吸附部102吸附电解质后，发生膨胀，可同时与解脱部103和配置为阴极导电部的柔性件202接触而使两者电导通。具体的，吸附部102可选用水凝胶纤维制成的微小弹簧，柔性件202可选用不锈钢弹簧，所述微小弹簧的一部分或全部置入不锈钢弹簧内部，而该微小弹簧的内部则包覆有解脱部103。
特别的，在一些替代性的实施例中，所述推送杆201还可以为实心推送杆，例如不锈钢实心推送杆，并被配置为阴极导电部，而导电部101之阳极导电部可选用包覆有第一绝缘部的导电丝，该导电部101可与所述实心推送杆沿径向并列设置，而非穿设于实心推送杆中。优选的，可通过一些固定点，将导电部101与所述实心推送杆相固定，例如可通过绑扎、胶结等方式。所述实心推送杆的远端亦可设置柔性件202，以增加远端的柔韧性，便于穿过迂曲的血管。此时，解脱部103可与柔性件202沿径向并列设置，吸附部102可选为实心的水凝胶材料或具化学吸附性能的材料制成，吸附部102的两端分别与解脱部103和柔性件202接触。如此配置，亦能实现解脱部103与阴极导电部通过吸附部102而电导通。当然解脱部103亦可穿入柔性件202内部而如上述实施例所述。
请参考图4，并结合图2，优选的，所述柔性件202具有第一显影部203，所述导管301的远端303设有第二显影部302，所述第一显影部203和所述第二显影部302均由显影材料制成，用以在X射线下显示自身的位置。例如，第一显影部203可选用与柔性件202其它部分材料相异而易于显影的材料，如铂等金属，如此，在X射线透视监视下，并可通过显示器监视，确定所述柔性件202与所述导管301的远端303的相对位置和距离，从而帮助医生判断弹簧圈104具体的电解脱时机。
本实施例还提供一种电解脱装置的操作方法，其使用如上所述的电解脱装置。该方法包括：
步骤一：将所述导管301推送至体内的一预定位置(如血管瘤附近)，并在所述导管301的近端持续滴注生理盐水，使所述吸附部102吸附所述生理盐水；
步骤二：向导管301的远端推动所述推送杆201，至一预定解脱位置；
步骤三：向所述导电部101通电，以使所述解脱部103电解溶蚀；
步骤四：所述解脱部103电解溶蚀后，即使所述弹簧圈104与所述解脱部103脱离连接，并使所述弹簧圈104到达血管瘤内，进而栓塞所述血管瘤腔。
具体的，在步骤一中，推送杆201使用时，医生会持续地朝向导管301中滴注生理盐水，位于解脱部103上的吸附部102吸收生理盐水而膨胀，并使解脱部103与阴极导电部保持持续接触，此时，解脱部103具有被电解脱的导体环境。相比现有技术中，解脱点需要首先伸出微导管外，才能保证充分接触到血液等电解质，才能开始电解脱，本实施例提供的方法，可使得吸附部102在推送过程中即可吸附电解质，且能够保持持续吸附电解质，故而可保证电解脱的导体环境优于现有技术，由此可提高电解脱的可靠性，避免进行多次的电解脱。
在步骤二中，所述预定解脱位置的设置，根据不同患者的情况，为不同的设置，一般根据医生的经验来判断和自行设置。
进而，在步骤三中，向所述导电部101通电，使得电流从外部的电解脱器的正极电极经由阳极导电部、解脱部103以及生理盐水，被传导至阴极导电部中，进而流向电解脱器的负极电极，至此形成电流回路；在电流的持续导通下，解脱部103发生电解溶蚀，使弹簧圈104被解离。
优选的，在步骤二中，向远端推动所述推送杆201的同时，可通过X射线观察所述第一显影部203与所述第二显影部302的相对距离，当所述第一显影部203与所述第二显影部302的距离不大于一预定距离时，即停止推送所述推送杆201。这里的预定距离，可根据实际电解脱装置的结构和手术的需 要进行设定。医生可通过X射线观察第一显影部203与第二显影部302的相对位置和距离，判断推送杆201的推进深度，并与预定解脱位置相比较和互相参照。由于解脱部103无需伸出导管301外也可以确保充分接触到电解质并完成弹簧圈104的电解离，从而有效地保证了弹簧圈104在被电解离时，不会伸出导管过长而引发危险，避免了“顶管”问题的发生，从而提高了推送的安全性，克服了现有需形成“倒T”影像，才能确保弹簧圈解脱的问题。
优选的，在步骤二中，可在向远端推动所述推送杆201的同时，向所述导电部101通电；或者，也可当所述第一显影部203与所述第二显影部302的距离不大于一预定距离，且停止推送所述推送杆201后，向所述导电部101通电。吸附部102在接触导管301中持续滴注的生理盐水或者通过接触血液后，均会发生膨胀并持续吸附有电解质(生理盐水或血液)，因此，可确保解脱部103始终具有可电解脱的微循环环境，克服了现有的电解脱弹簧圈解脱时间长，需要多次解脱的问题，提高了安全解脱可靠性。较佳地，可在推送杆201推送所述电解脱机构至靠近导管的远端303处后停止，再开始进行电解脱，如此，可使得弹簧圈104在被电解离后，即位于导管的远端303的开口处，便于弹簧圈104到达并栓塞预定的位置。当然，一些需要多个弹簧圈104的情况下，亦可在导管301中就开始电解脱，而用后续的弹簧圈104将在前的弹簧圈104顶出，具体可根据手术的需要进行选择。由于无需形成“倒T”影像即可解脱，亦即可在导管301内部即可开始电解脱，该方法还可降低医生操作的难度，可在向远端推动所述推送杆201的同时即开始电解脱的过程。当然，也可以待推送所述推送杆201到位后，再开始电解脱的过程，多种方法组合，利于不同的手术情况和复杂的手术环境。
综上，本发明实施例提供的电解脱机构通过吸附部吸附电解质后，使解脱部与阴极导电部持续保持电导通，从而形成供解脱部电解溶蚀的稳定的电解脱环境，故而在对导电部通电后，与阳极导电部连接的解脱部即与阴极导电部发生电化学反应，使解脱部自身发生电解溶蚀，如此，使得植入物与解脱部脱离连接并离开整个电解脱机构，用以留置于一预定部位。相比现有技术，由于吸附部在吸附电解质后能够持续导通解脱部与阴极导电部，故而能 够提高电解脱操作的可靠性，克服了现有的电解脱装置的解脱时间长，需要多次解脱的问题，提高了安全解脱可靠性。
此外，在本发明实施例提供的电解脱装置中，由于采用上述电解脱机构，故而能够使得解脱部在导管的内部即可进行电解脱，不必将解脱部推出导管的远端开口，即可确保解脱部能够接触电解质而形成稳定的微循环电解脱环境，使得植入物可在导管的内部任意位置进行安全有效的电解脱，如此，可避免植入物伸出导管的远端开口过长而引发危险，同时也避免“顶管”问题的发生，从而有效地提高电解脱装置在植入过程中的安全性。
另外，本发明实施例提供的电解脱装置在实际操作时，通过向导管注入生理盐水，使吸附部始终能够吸附电解质，可确保解脱部始终具有稳定的可电解脱的电解质微循环环境，克服了现有的电解脱装置的解脱时间长，需要多次解脱的问题，提高了安全解脱可靠性；进一步地，由于无需形成“倒T”影像即可解脱，亦即可在向远端推动推送杆的同时即开始植入物的电解脱过程，故还可降低医生操作的难度，多种方法组合，利于不同的手术情况和复杂的手术环境。
上述描述仅是对本发明较佳实施例的描述，并非对本发明范围的任何限定，本发明领域的普通技术人员根据上述揭示内容做的任何变更、修饰，均属于权利要求书的保护范围。

Claims (14)

  1. 一种电解脱机构，用于与电解脱器配合，实现植入物的电解脱，其特征在于，包括：
    植入物；
    解脱部，所述解脱部的远端与所述植入物连接，且所述解脱部被配置为能够通过电导通电解溶蚀，以解除所述植入物与所述解脱部之间的连接；
    导电部，包括：
    阳极导电部，所述阳极导电部包覆有第一绝缘部，且所述阳极导电部的远端与所述解脱部的近端连接，所述阳极导电部的近端用于与所述电解脱器的正极连接；以及
    阴极导电部，所述阴极导电部的近端用于与所述电解脱器的负极连接，并且所述阴极导电部通过所述第一绝缘部与所述阳极导电部电绝缘；以及
    吸附部，用以在吸附电解质后使所述解脱部与所述阴极导电部电导通。
  2. 根据权利要求1所述的电解脱机构，其特征在于，所述吸附部由水凝胶材料制成。
  3. 根据权利要求2所述的电解脱机构，其特征在于，所述吸附部包裹所述解脱部。
  4. 根据权利要求3所述的电解脱机构，其特征在于，所述吸附部为螺旋结构或中空管件，套接在所述解脱部上。
  5. 根据权利要求2所述的电解脱机构，其特征在于，所述吸附部涂覆在所述解脱部上。
  6. 根据权利要求2所述的电解脱机构，其特征在于，所述水凝胶材料选自以下材料中的一种或多种的组合：纤维素及其衍生物水凝胶；明胶改性水凝胶；壳聚糖及其衍生物交联水凝胶；透明质酸及其改性交联水凝胶；聚乙二醇及其衍生物交联水凝胶；聚乙烯醇及其衍生物交联水凝胶；聚N-甲基吡咯烷酮及其衍生物交联水凝胶；聚酯类水凝胶；聚丙烯酰胺及其衍生物交联 水凝胶；衍生自一种或多种烯烃不饱和可聚合羧酸单体的交联可膨胀聚合物；以及甲基丙烯酸羟乙酯及其衍生物水凝胶。
  7. 一种电解脱装置，其特征在于，包括根据权利要求1～6中任一项所述的电解脱机构，且还包括：
    导管；以及
    推送杆，与所述电解脱机构的近端相连接；
    其中，所述电解脱机构与所述推送杆均可活动地穿设于所述导管内，且所述推送杆用于与所述导管相配合，将所述电解脱机构推送至目标位置。
  8. 根据权利要求7所述的电解脱装置，其特征在于，所述推送杆的远端设置有一柔性件，所述推送杆通过所述柔性件与所述电解脱机构连接。
  9. 根据权利要求8所述的电解脱装置，其特征在于，所述推送杆与所述柔性件均为中空结构，所述导电部穿设于所述推送杆与所述柔性件中；所述阴极导电部包覆有第二绝缘部，以与所述推送杆和所述柔性件电绝缘，所述阴极导电部的远端暴露于所述第二绝缘部之外并能够与所述解脱部通过所述吸附部电导通。
  10. 根据权利要求8所述的电解脱装置，其特征在于，所述推送杆与所述柔性件均为中空结构，所述阳极导电部穿设于所述推送杆与所述柔性件中，且所述推送杆与所述柔性件共同被配置作为所述阴极导电部。
  11. 根据权利要求9或10所述的电解脱装置，其特征在于，所述吸附部与所述柔性件沿轴向并列设置，并且所述吸附部位于所述柔性件的远端。
  12. 根据权利要求9或10所述的电解脱装置，其特征在于，所述吸附部的近端在所述柔性件内，且所述吸附部的远端从所述柔性件的远端伸出。
  13. 根据权利要求9或10所述的电解脱装置，其特征在于，所述吸附部整个在所述柔性件的内部。
  14. 根据权利要求8所述的电解脱装置，其特征在于，所述柔性件具有第一显影部，所述导管的远端设有第二显影部，所述第一显影部和所述第二显影部均由显影材料制成。
PCT/CN2019/106824 2018-09-30 2019-09-20 电解脱机构以及电解脱装置 Ceased WO2020063455A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020217013011A KR102597482B1 (ko) 2018-09-30 2019-09-20 전기적 분리 메커니즘 및 전기적 분리 장치
US17/281,111 US20210338243A1 (en) 2018-09-30 2019-09-20 Electrical detachment mechanism and electrical detachment device
JP2021542245A JP7557468B2 (ja) 2018-09-30 2019-09-20 電解分離機構および電気的分離デバイス
EP19866573.9A EP3858262B1 (en) 2018-09-30 2019-09-20 Electrical detachment mechanism and electrical detachment device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811170257.6A CN110960280B (zh) 2018-09-30 2018-09-30 电解脱机构以及电解脱装置
CN201811170257.6 2018-09-30

Publications (1)

Publication Number Publication Date
WO2020063455A1 true WO2020063455A1 (zh) 2020-04-02

Family

ID=69951178

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/106824 Ceased WO2020063455A1 (zh) 2018-09-30 2019-09-20 电解脱机构以及电解脱装置

Country Status (6)

Country Link
US (1) US20210338243A1 (zh)
EP (1) EP3858262B1 (zh)
JP (1) JP7557468B2 (zh)
KR (1) KR102597482B1 (zh)
CN (1) CN110960280B (zh)
WO (1) WO2020063455A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113749718B (zh) * 2020-06-05 2024-01-26 微创神通医疗科技（上海）有限公司 解脱装置、解脱系统及解脱方法、治疗装置
CN112274207B (zh) * 2020-12-29 2021-04-09 北京泰杰伟业科技有限公司 一种快速电解脱输送装置
CN113892993A (zh) * 2021-11-08 2022-01-07 贝朗医疗（苏州）有限公司 电解脱血流导向装置
CN114246711A (zh) * 2021-12-02 2022-03-29 微创神通医疗科技（上海）有限公司 一种推送杆、解脱装置及医用装置
CN114376650B (zh) * 2022-01-26 2026-02-06 上海申淇医疗科技有限公司 一种弹簧圈的输送装置
CN115227328A (zh) * 2022-08-23 2022-10-25 苏州美创医疗科技有限公司 一种凝栓结构及具有其的配合装置
CN118000817B (zh) * 2024-04-10 2024-08-16 北京泰杰伟业科技股份有限公司 一种可电解脱的导管装置
WO2026042489A1 (ja) * 2024-08-23 2026-02-26 株式会社グッドマン 送達器具、及び送達システム

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050021023A1 (en) * 2003-07-23 2005-01-27 Scimed Life Systems, Inc. System and method for electrically determining position and detachment of an implantable device
US20160287867A1 (en) * 2013-11-14 2016-10-06 Rm2 Technology Llc Methods, systems, and apparatuses for delivery of electrolysis products
CN106029011A (zh) * 2013-12-20 2016-10-12 微温森公司 设备传送系统
CN206355094U (zh) * 2016-10-20 2017-07-28 微创神通医疗科技（上海）有限公司 植入物输送系统
CN107205736A (zh) * 2015-01-20 2017-09-26 纽罗加米医药公司 用于颅内动脉瘤的治疗的微型移植物及使用方法
CN107773302A (zh) * 2013-03-14 2018-03-09 斯波瑞申有限公司 柔性射频消融针
CN209136755U (zh) * 2018-09-30 2019-07-23 微创神通医疗科技（上海）有限公司 电解脱机构以及电解脱装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3754145B2 (ja) * 1996-09-20 2006-03-08 株式会社カネカメディックス 生体内留置部材を有する医療用ワイヤー
US6656218B1 (en) * 1998-07-24 2003-12-02 Micrus Corporation Intravascular flow modifier and reinforcement device
US6602261B2 (en) * 1999-10-04 2003-08-05 Microvention, Inc. Filamentous embolic device with expansile elements
US7645292B2 (en) * 2003-10-27 2010-01-12 Boston Scientific Scimed, Inc. Vaso-occlusive devices with in-situ stiffening elements
EP2444010B1 (en) * 2007-05-18 2017-03-01 Stryker European Holdings I, LLC Medical implant detachment systems
JP5184193B2 (ja) * 2008-04-23 2013-04-17 株式会社カネカ 医療用離脱型塞栓ワイヤ
US20090306701A1 (en) * 2008-06-10 2009-12-10 Boston Scientific Scimed, Inc. Vascular access sheath with integrated return electrode
JP2012520134A (ja) * 2009-03-13 2012-09-06 ストライカー コーポレイション 閉塞器具デリバリーシステムの電気接点
EP3127492B1 (en) * 2011-06-03 2023-01-18 Covidien LP Embolic implant
US11006963B2 (en) * 2013-09-03 2021-05-18 Jianlu Ma Detachment mechanisms for implantable devices
CN104398283A (zh) * 2014-09-15 2015-03-11 北京泰杰伟业科技有限公司 一种带有可膨胀聚合物的栓塞器械
EP3253303A1 (en) * 2015-03-26 2017-12-13 Boston Scientific Scimed, Inc. Biologic-based expandable occlusion devices

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050021023A1 (en) * 2003-07-23 2005-01-27 Scimed Life Systems, Inc. System and method for electrically determining position and detachment of an implantable device
CN107773302A (zh) * 2013-03-14 2018-03-09 斯波瑞申有限公司 柔性射频消融针
US20160287867A1 (en) * 2013-11-14 2016-10-06 Rm2 Technology Llc Methods, systems, and apparatuses for delivery of electrolysis products
CN106029011A (zh) * 2013-12-20 2016-10-12 微温森公司 设备传送系统
CN107205736A (zh) * 2015-01-20 2017-09-26 纽罗加米医药公司 用于颅内动脉瘤的治疗的微型移植物及使用方法
CN206355094U (zh) * 2016-10-20 2017-07-28 微创神通医疗科技（上海）有限公司 植入物输送系统
CN209136755U (zh) * 2018-09-30 2019-07-23 微创神通医疗科技（上海）有限公司 电解脱机构以及电解脱装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3858262A4 *

Also Published As

Publication number Publication date
EP3858262A4 (en) 2021-11-24
JP2022511996A (ja) 2022-02-01
KR20210068520A (ko) 2021-06-09
CN110960280B (zh) 2025-08-01
JP7557468B2 (ja) 2024-09-27
EP3858262A1 (en) 2021-08-04
US20210338243A1 (en) 2021-11-04
CN110960280A (zh) 2020-04-07
EP3858262B1 (en) 2022-11-16
KR102597482B1 (ko) 2023-11-03

Similar Documents

Publication Publication Date Title
WO2020063455A1 (zh) 电解脱机构以及电解脱装置
JP3754145B2 (ja) 生体内留置部材を有する医療用ワイヤー
JP2880070B2 (ja) 生体内留置部材を有する医療用ワイヤー
CA2709389C (en) Multistrand coil for interventional therapy
BR112015022486B1 (pt) Dispositivo médico expansível
ES2818105T3 (es) Sistema de separación de dispositivo de oclusión vascular con cable central ahusado y separación activada mediante calor
CN209136755U (zh) 电解脱机构以及电解脱装置
JPH08506512A (ja) 血管内塞栓装置の切り離し検出方法および装置
CN212913299U (zh) 电解脱弹簧圈推送杆端部结构及其解脱系统、栓塞系统
CN116392703B (zh) 一种针对脑血管术中出血的快速止血导丝
JP4392866B2 (ja) 塞栓材料および医療用ワイヤー装置
CN115444542A (zh) 左心耳封堵消融装置
US20180271533A1 (en) Vascular Implant System and Processes with Flexible Detachment Zones
US20230301660A1 (en) Systems and methods for treating aneurysms
CN215024773U (zh) 一种可电解脱的微导管
JP2023531159A (ja) 解放装置、システムおよび方法ならびに治療装置
CN201775686U (zh) 介入型医疗器械连接装置
WO2022002279A1 (zh) 电解脱弹簧圈推送杆端部结构及其解脱系统、栓塞系统
CN209332256U (zh) 腔内目标组织切割器
CN116058899A (zh) 动脉瘤闭塞系统及其动脉瘤闭塞装置
US20250268602A1 (en) Vaso-occlusive electrolytic detachment detection
KR102952725B1 (ko) 혈관내 보철물 운반 시스템
CN113749718B (zh) 解脱装置、解脱系统及解脱方法、治疗装置
CN119868807A (zh) 一种可吸收起搏导线

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: 19866573

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021542245

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20217013011

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2019866573

Country of ref document: EP