CN112274206B - Conveying system of turbulent flow device - Google Patents
Conveying system of turbulent flow device Download PDFInfo
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- CN112274206B CN112274206B CN202011585757.3A CN202011585757A CN112274206B CN 112274206 B CN112274206 B CN 112274206B CN 202011585757 A CN202011585757 A CN 202011585757A CN 112274206 B CN112274206 B CN 112274206B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, 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
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, 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
- A61B17/12181—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
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Abstract
The invention relates to a hydrogel turbulence device, comprising: the two ends of the spherical spoiler are provided with developing marks, the macromolecular elastic wire penetrating through hydrogel is connected with the developing marks at the two ends, the outer side of the developing mark at one end is connected with a releasing part, and the hydrogel can expand when meeting blood to block the blood flow from entering the tumor cavity. The invention also relates to a spoiler transport system comprising: the near end of the hydrogel turbulence device is sleeved with a conveying steel pipe of an insulating pipe, and the insulating pipe is sleeved with a conductive pipe; the far end of the conveying steel pipe is provided with a supporting spring, the far end of the supporting spring is provided with a second cathode, the second cathode is connected with the near end of the conveying steel pipe through a cathode conductive wire, the far end of the second cathode is provided with a second anode, and the second anode is connected with the conductive pipe through an anode conductive wire; the far end of the second anode is connected with the releasing part of the hydrogel turbulence device; the second anode and the second cathode can be communicated through electrolyte in blood to form a loop, and the releasing part is broken through electrochemical dissolution, so that the conveying and the rapid releasing of the hydrogel turbulence device are realized.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a conveying system of a turbulent flow device.
Background
An aneurysm is a very common vascular disease, which is a manifestation of a localized or diffuse dilatation or bulging of the arterial wall, mainly represented by a swelling, pulsatile mass, due to lesions or lesions of the arterial wall, and may occur anywhere in the arterial system. Once the aneurysm ruptures, serious consequences may result. For example, intracranial aneurysm ruptures to cause subarachnoid hemorrhage, and severe cases may cause vasospasm to cause cerebral infarction, leading to hemiplegia and coma. The current treatment options for aneurysms are primarily open surgical and endovascular interventions. Open surgical treatment regimens require opening the body cavity that surrounds the aneurysm, such as craniotomy and thoracotomy, causing significant trauma to the patient's body and long post-operative recovery periods. The intravascular interventional therapy of the aneurysm becomes the preferred clinical treatment scheme of many medical experts at present due to the advantages of minimal invasion, safety and effectiveness.
At present, often use implanted spoiler among the endovascular intervention treatment technique of aneurysm, but only use under the circumstances of spoiler, can not cause the bolt fast in the tumour intracavity, still have a large amount of blood flows to get into the tumour intracavity, the healing cycle length, simultaneously, to the aneurysm of breaing, simply use the spoiler to treat, probably there is continuous bleeding, the operation risk is higher.
In addition, the current embolization system for delivering embolization substances generally adopts electrolysis to separate embolization substances from a delivery device, the traditional electrolysis method uses a human body as a loop, an anode is connected with a power supply through a stainless steel delivery rod, a cathode is inserted into the arms and other parts of the human body, the cathode and the anode are communicated through long human blood vessels, and the electrolysis is very slow and lasts for about 30-60 seconds. In the latest electrolytic stripping device, the anode is connected with the conductive tube by using the conductive wire, but the conveying rod and the supporting spring are used as the cathode to realize a conductive loop, so that the stripping time is improved to some extent and is about 10-15 seconds, and the problem of long operation time also exists.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a hydrogel turbulence device and a turbulence device conveying system. Meanwhile, the turbulence device conveying system is provided with a cathode and an anode which are very close to each other, and the cathode and the anode are connected with the anode and the cathode of the power supply respectively through the conductive wires with the insulating layers, so that the hydrogel turbulence device kept in the tumor cavity is quickly released, the operation time is greatly reduced, and the operation risk is reduced.
In order to achieve the above object, in a first aspect, the present invention provides a hydrogel turbulator comprising:
the two ends of the spherical spoiler are provided with developing marks for being accommodated in a tumor cavity of the aneurysm;
the macromolecular elastic wire is positioned in the spherical spoiler, and two ends of the macromolecular elastic wire are respectively connected with the developing marks at two ends of the spherical spoiler;
the hydrogel is positioned in the spherical spoiler, penetrates through the macromolecular elastic wire, is expanded after meeting blood, and is filled in the spherical spoiler to reduce the blood flow in the tumor cavity;
the releasing part is connected with the outer end of the developing mark at one end of the spherical spoiler, and when the external conveyor conveys the spherical spoiler into the tumor cavity through the releasing part, the releasing part is broken, so that the spherical spoiler is kept in the tumor cavity;
the spherical spoiler is compressed into a rod shape and is conveyed into the tumor cavity by the abutting of the release part through the conveyor; the release part is broken, the spherical spoiler is left in the tumor cavity, and the spherical spoiler is spread so as to prevent the spherical spoiler from being released from the tumor cavity; the hydrogel which is positioned in the spherical spoiler and is arranged on the macromolecular elastic wire in a penetrating way gradually expands after meeting blood in the tumor cavity, and is filled in the spherical spoiler, so that the blood flow in the tumor cavity is reduced.
Preferably, the surface of the spherical spoiler is of a net structure, and the spherical spoiler is made of nickel-titanium alloy wires or platinum-core nickel-titanium wires.
Preferably, the material of disengagement portion is stainless steel wire, the diameter of disengagement portion is 0.02 ~ 0.06 mm.
In a second aspect, the present invention provides a spoiler delivery system comprising:
the two ends of the spherical spoiler are provided with developing marks for being accommodated in a tumor cavity of the aneurysm;
the macromolecular elastic wire is positioned in the spherical spoiler, and two ends of the macromolecular elastic wire are respectively connected with the developing marks at two ends of the spherical spoiler;
the hydrogel is positioned in the spherical spoiler, penetrates through the macromolecular elastic wire, is expanded after meeting blood, and is filled in the spherical spoiler to reduce the blood flow in the tumor cavity;
the releasing part is connected with the outer end of the developing mark at one end of the spherical spoiler, and when the external conveyor conveys the spherical spoiler into the tumor cavity through the releasing part, the releasing part is broken, so that the spherical spoiler is kept in the tumor cavity;
the near end of the conveying steel pipe is provided with a grinding part, and an insulating pipe is sleeved on the outer side of the grinding part; the near end of the conveying steel pipe is connected with a first cathode of an external electrolytic stripper;
the conductive tube is sleeved outside the insulating tube; the conductive tube is connected with a first anode of the electrolytic separator;
the supporting spring is connected with the far end of the conveying steel pipe;
a second cathode located at a distal end of the support spring;
the cathode conductive wire penetrates through the conveying steel pipe, the near end of the cathode conductive wire is connected with the near end of the conveying steel pipe, and the far end of the cathode conductive wire is connected with the second cathode; the second cathode, the cathode conductive wire and the conveying steel pipe form a cathode passage of the electrolytic separator;
a second anode located on a distal end side of the second cathode, the distal end of the second anode being connected to the release portion;
the anode conductive wire penetrates through the conveying steel pipe, the near end of the anode conductive wire is connected with the conductive pipe, and the far end of the anode conductive wire penetrates out of the far end of the conveying steel pipe to be connected with the near end of the second anode; the second anode, the anode conductive wire and the conductive tube form a positive electrode passage of the electrolytic separator;
the conveying steel pipe conveys the spherical spoiler compressed into a rod shape into the tumor cavity through the releasing part, and the spherical spoiler is spread so as to prevent the spherical spoiler from being released from the tumor cavity; the hydrogel in the spherical spoiler gradually expands after meeting the blood in the tumor cavity and is filled in the spherical spoiler, so that the blood flow in the tumor cavity is reduced; and opening the switch of the electrolytic releaser, enabling the second anode and the second cathode to conduct the positive electrode passage and the negative electrode passage through electrolyte in blood to form a low-resistance circuit, and enabling the release part to be broken through electrochemical dissolution to separate the spherical spoiler to remain in the tumor cavity.
Preferably, the conveying steel pipe is a stainless steel pipe or a nickel-titanium pipe with taper grinding, and the diameter of the conveying steel pipe is 0.3-0.6 mm.
Preferably, the second anode is a stainless steel wire, and the diameter of the second anode is 0.02-0.08 mm.
Preferably, the second cathode is ring-shaped or spring-shaped and is made of stainless steel or platinum alloy;
the outer diameter of the second cathode is 0.2-0.5 mm;
the distance between the second anode and the second cathode is 0.1 mm.
Preferably, the anode conductive wire and the cathode conductive wire are both made of noble metal alloy wires;
the outside of the noble metal alloy wire is provided with an insulating layer;
the diameters of the anode conductive wire and the cathode conductive wire are both 0.05-0.1 mm.
Preferably, the supporting spring is formed by winding a stainless steel wire with the diameter of 0.03-0.08 mm, and the outer diameter of the supporting spring is 0.2-0.6 mm.
Preferably, the middle part of the supporting spring is provided with a supporting core wire, and the supporting core wire is a stainless steel wire with a taper grinding function;
the diameter of the supporting core wire is 0.05-0.36 mm.
The invention provides a hydrogel turbulence device and a turbulence device conveying system, wherein a spherical turbulence device is arranged in a tumor cavity, development marks are arranged at two ends of the spherical turbulence device, a high-molecular elastic wire is connected with the development marks at two ends in the spherical turbulence device, hydrogel is arranged on the high-molecular elastic wire in a penetrating manner and is used for keeping the position of the hydrogel stable, and the hydrogel expands after meeting blood in the tumor cavity and quickly embolizes in the tumor cavity and prevents blood flow from entering the tumor cavity. Meanwhile, the turbulence device conveying system is provided with a cathode and an anode which are very close to each other, and the cathode and the anode are connected with the anode and the cathode of the power supply respectively through the conductive wires with the insulating layers, so that the hydrogel turbulence device retained in the tumor cavity is quickly released, the operation time is greatly reduced, and the operation risk is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogel turbulence apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of a spoiler delivery system in a microcatheter according to a second embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a partially enlarged view of fig. 2 at B.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
The invention provides a hydrogel turbulence device and a turbulence device conveying system, wherein a spherical turbulence device is arranged in a tumor cavity, development marks are arranged at two ends of the spherical turbulence device, a high-molecular elastic wire is connected with the development marks at two ends in the spherical turbulence device, hydrogel is arranged on the high-molecular elastic wire in a penetrating manner and is used for keeping the position of the hydrogel stable, and the hydrogel expands after meeting blood in the tumor cavity and quickly embolizes in the tumor cavity and prevents blood flow from entering the tumor cavity. Meanwhile, the turbulence device conveying system is provided with a cathode and an anode which are very close to each other, and the cathode and the anode are connected with the anode and the cathode of the power supply respectively through the conductive wires with the insulating layers, so that the hydrogel turbulence device retained in the tumor cavity is quickly released, the operation time is greatly reduced, and the operation risk is reduced.
Fig. 1 is a schematic structural diagram of a hydrogel turbulence device according to an embodiment of the present invention, as shown in fig. 1, the hydrogel turbulence device includes: the device comprises a spherical spoiler 11, a macromolecule elastic yarn 12, hydrogel 13, a developing mark 14 and a releasing part 15.
The spherical spoiler 11 is used for being contained in an aneurysm cavity of an aneurysm and blocking blood from entering the aneurysm cavity, the two ends of the spherical spoiler 11 are provided with developing marks 14, and the developing marks 14 are used for positioning the spherical spoiler 11 in operation.
The polymeric elastic wire 12 is located inside the spherical spoiler 11, and both ends of the polymeric elastic wire 12 are connected to the two development marks 14, respectively.
The hydrogel 13 is positioned in the spherical spoiler 11 and is arranged on the macromolecule elastic wire 12 in a penetrating manner, the macromolecule elastic wire 12 is used for keeping the position of the hydrogel 13 in the spherical spoiler 11 stable, and the hydrogel 13 expands after meeting blood in the tumor cavity and is used for filling the inside of the spherical spoiler 11 and reducing the blood flow in the tumor cavity.
The releasing part 15 is connected with the proximal end of the developing mark 14 at one end of the spherical spoiler 11, and after the external conveyor sends the spherical spoiler 11 into the tumor cavity through the releasing part 15, the releasing part 15 is broken to leave the spherical spoiler 11 in the tumor cavity.
The surface of the spherical spoiler 11 is of a net structure, the spherical spoiler 11 is made of nickel-titanium alloy wires or platinum-core nickel-titanium wires and has shape memory capacity, and the spherical spoiler 11 is retained in the tumor cavity and is expanded into a spherical shape by virtue of the shape memory capacity of the material, so that the spherical spoiler is prevented from being separated from the tumor cavity and can achieve the purpose of blocking blood flow. The nickel-titanium alloy wire or the platinum-core nickel-titanium wire can keep the tennis shape of the spherical spoiler 11 and can be developed in the operation, so that the operation convenience and the operation safety are improved.
The hydrogel 13 is a substance capable of causing thrombus in the tumor cavity, and the spherical spoiler 11 has a good effect of blocking blood flow into the tumor cavity, but cannot be matched with common thrombus-causing substances such as a spring ring and the like, so that the hydrogel is matched with a thrombus-causing substance capable of being used in the spherical spoiler 11. The hydrogel 13 can be used in the spherical spoiler 11, the hydrogel 13 can be made into columnar or hollow particles and is arranged on the high molecular elastic wire 12 in a penetrating manner, after the spherical spoiler 11 is sent into the tumor cavity, the hydrogel 13 begins to expand when meeting blood in the tumor cavity, the inner cavity of the spherical spoiler 11 is filled, thrombus is rapidly initiated in the tumor, and the high molecular elastic wire 12 can ensure the stability of the position of the hydrogel 13 in the spherical spoiler 11.
The releasing part 15 connected with the developing mark 14 at one end is a stainless steel wire with the diameter of 0.02-0.06 mm, and the releasing part 15 can be broken by electrochemical dissolution and used for realizing the separation of the spherical spoiler 11 and the conveying device, so that the spherical spoiler 11 is left in the tumor cavity.
According to the hydrogel turbulence device provided by the embodiment of the invention, the hydrogel 13 penetrates through the macromolecule elastic wire 12 in the spherical turbulence generator 11, the hydrogel 13 expands when meeting blood to fill the spherical turbulence generator 11, so that thrombus can be rapidly caused in a tumor cavity, and meanwhile, the net structure on the surface of the spherical turbulence generator 11 can prevent blood flow from entering the tumor cavity, so that the thrombus causing speed is high, the embolism effect is improved, and the risk of an operation is reduced.
FIG. 2 is a schematic view of a spoiler delivery system in a microcatheter according to a second embodiment of the present invention; FIG. 3 is an enlarged view of a portion of FIG. 2 at A; fig. 4 is a partially enlarged view of fig. 2 at B. As shown in fig. 2-4, the spoiler delivery system includes: the device comprises a spherical spoiler 11, a macromolecule elastic wire 12, hydrogel 13, a developing mark 14, a release part 15, a conveying steel pipe 21, an insulating pipe 22, a conductive pipe 23, a supporting spring 24, a second cathode 25, a second anode 26, a cathode conductive wire 27 and an anode conductive wire 28.
In the second embodiment, the spoiler conveying system uses an external electrolytic stripper as an input power source, wherein an anode of the electrolytic stripper is a first anode, and a cathode of the electrolytic stripper is a first cathode.
The spherical spoiler 11 is used for being contained in an aneurysm cavity of an aneurysm and blocking blood from entering the aneurysm cavity, the two ends of the spherical spoiler 11 are provided with developing marks 14, and the developing marks 14 are used for positioning the spherical spoiler 11 in operation.
The polymeric elastic wire 12 is located inside the spherical spoiler 11, and both ends of the polymeric elastic wire 12 are connected to the two development marks 14, respectively.
The hydrogel 13 is positioned in the spherical spoiler 11 and is arranged on the macromolecule elastic wire 12 in a penetrating manner, the macromolecule elastic wire 12 is used for keeping the position of the hydrogel 13 in the spherical spoiler 11 stable, and the hydrogel 13 expands after meeting blood in the tumor cavity and is used for filling the inside of the spherical spoiler 11 and reducing the blood flow in the tumor cavity.
The releasing part 15 is connected with the proximal end of the developing mark 14 at one end of the spherical spoiler 11, and after the external conveyor sends the spherical spoiler 11 into the tumor cavity through the releasing part 15, the releasing part 15 is broken to leave the spherical spoiler 11 in the tumor cavity.
The surface of the spherical spoiler 11 is of a net structure, the spherical spoiler 11 is made of nickel-titanium alloy wires or platinum-core nickel-titanium wires and has shape memory capacity, and the spherical spoiler 11 is retained in the tumor cavity and is expanded into a spherical shape by virtue of the shape memory capacity of the material, so that the spherical spoiler is prevented from being separated from the tumor cavity and can achieve the purpose of blocking blood flow. The nickel-titanium alloy wire or the platinum-core nickel-titanium wire can keep the tennis shape of the spherical spoiler 11 and can be developed in the operation, so that the operation convenience and the operation safety are improved.
The hydrogel 13 is a substance capable of causing thrombus in the tumor cavity, and the spherical spoiler 11 has a good effect of blocking blood flow into the tumor cavity, but cannot be matched with common thrombus-causing substances such as a spring ring and the like, so that the hydrogel is matched with a thrombus-causing substance capable of being used in the spherical spoiler 11. The hydrogel 13 can be used in the spherical spoiler 11, the hydrogel 13 can be made into columnar or hollow particles and is arranged on the high molecular elastic wire 12 in a penetrating manner, after the spherical spoiler 11 is sent into the tumor cavity, the hydrogel 13 begins to expand when meeting blood in the tumor cavity, the inner cavity of the spherical spoiler 11 is filled, thrombus is rapidly initiated in the tumor, and the high molecular elastic wire 12 can ensure the stability of the position of the hydrogel 13 in the spherical spoiler 11.
The releasing part 15 connected with the developing mark 14 at one end is a stainless steel wire with the diameter of 0.02-0.06 mm, and the releasing part 15 can be broken by electrochemical dissolution and used for realizing the separation of the spherical spoiler 11 and the conveying device, so that the spherical spoiler 11 is left in the tumor cavity.
The near end of the conveying steel pipe 21 is provided with a grinding part for taper grinding, the outer side of the grinding part is sleeved with an insulating pipe 22, the outer side of the insulating pipe 22 is sleeved with a conducting pipe 23, the far end of the conveying steel pipe 21 is connected with a supporting spring 24, the far end of the supporting spring 24 is provided with a second cathode 25, the far end side of the second cathode 25 is provided with a second anode 26, and the far end of the second anode 26 is connected with the releasing part 15.
The conveying steel pipe 21 is a stainless steel pipe or a nickel titanium pipe with taper grinding, the diameter of the conveying steel pipe 21 is 0.3-0.6 mm, the second anode 26 is a stainless steel wire, the diameter of the second anode 26 is 0.02-0.08 mm, the second cathode 25 is annular or spring-shaped and is made of stainless steel or platinum alloy, the outer diameter of the second cathode 25 is 0.2-0.5 mm, and the distance between the second cathode 25 and the second anode 26 is 0.01 mm.
The second anode 26 is connected to the conductive tube 23 via an anode conductive wire 28, and the second cathode 25 is connected to the proximal end of the steel delivery tube 21 via a cathode conductive wire 27. The conveying steel pipe 21 and the supporting spring 24 both have a hollow structure, and the cathode conductive wire 27 and the anode conductive wire 28 both penetrate through the conveying steel pipe 21 and the supporting spring 24.
The anode conductive wire 28 and the cathode conductive wire 27 are both made of noble metal alloy wires, the outer layer of each noble metal alloy wire is wrapped by an insulating layer, and the diameters of the anode conductive wire 28 and the cathode conductive wire 27 are both 0.05-0.1 mm. The supporting spring 24 is formed by winding stainless steel wires with the diameter of 0.03-0.08 mm, and the outer diameter of the supporting spring 24 is 0.2-0.6 mm. The middle part of the supporting spring 24 is also provided with a supporting core wire (not shown in the figure), the supporting core wire is a stainless steel wire with taper grinding, and the diameter of the supporting core wire is 0.05-0.36 mm.
When the conveying steel tube 21 is inserted into the power supply port of the electrolytic extractor, the proximal end of the conveying steel tube 21 is connected with the first cathode of the electrolytic extractor, and the conductive tube 23 is connected with the first anode of the electrolytic extractor. Wherein, the second anode 26, the anode conductive wire 28 and the conductive tube 23 constitute a positive electrode path of the electrolytic stripper, and the second cathode 25, the cathode conductive wire 27 and the proximal end of the conveying steel tube 21 constitute a negative electrode path of the electrolytic stripper.
The specific working process of the turbulent flow device conveying system provided by the embodiment of the invention is as follows:
the conveying steel tube 21 conveys the spherical spoiler 11 compressed into a rod shape into a tumor cavity of the hemangioma along the microcatheter 3, the spherical spoiler 11 is restored into a spherical shape in the tumor cavity by the shape memory capacity of nickel-titanium alloy, the tumor cavity is filled with the spherical spoiler 11, blood flow is prevented from entering the tumor cavity, the hydrogel 13 penetrating the macromolecular elastic wire 12 gradually expands after meeting blood in the tumor cavity, and the hydrogel is filled in the spherical spoiler 11 to reduce the blood flow in the tumor cavity; and a power switch of the electrolytic releaser is turned on, the second anode 26 and the second cathode 25 conduct a positive electrode passage and a negative electrode passage of the electrolytic releaser through electrolyte in blood to form a low-resistance circuit, the release part 15 is rapidly broken after electrochemical dissolution reaction, the spherical spoiler 11 and the second anode 26 are separated, and the spherical spoiler 11 is left in the tumor cavity.
Compared with the prior art, the second embodiment of the invention provides a turbulent flow device delivery system, which realizes rapid thrombus generation in a tumor cavity by using hydrogel 13 to expand in the tumor cavity when meeting blood, and uses a spherical turbulent flow device 11 to fill the interior of the tumor cavity to stabilize the embolus hydrogel 13 and block blood flow from entering the tumor cavity; simultaneously through setting up very near second positive pole 26 and second negative pole 25 of distance, the electric charge flow distance is extremely short during messenger's electrolysis, has improved the efficiency that the electrolysis was taken off for the time of taking off only needs 1 ~ 3 seconds, has shortened the operation time greatly, has reduced the risk of operation, uses the conductive filament realization conducting circuit that has the insulating layer simultaneously, has strengthened the stability of taking off.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A spoiler delivery system, comprising:
the two ends of the spherical spoiler are provided with developing marks for being accommodated in a tumor cavity of the aneurysm;
the macromolecular elastic wire is positioned in the spherical spoiler, and two ends of the macromolecular elastic wire are respectively connected with the developing marks at two ends of the spherical spoiler;
the hydrogel is positioned in the spherical spoiler, penetrates through the macromolecular elastic wire, is expanded after meeting blood, and is filled in the spherical spoiler to reduce the blood flow in the tumor cavity;
the releasing part is connected with the near end of the developing mark at one end of the spherical spoiler, and when the external conveyor conveys the spherical spoiler into the tumor cavity through the releasing part, the releasing part is broken to retain the spherical spoiler in the tumor cavity;
the near end of the conveying steel pipe is provided with a grinding part, and an insulating pipe is sleeved on the outer side of the grinding part; the near end of the conveying steel pipe is connected with a first cathode of an external electrolytic stripper;
the conductive tube is sleeved outside the insulating tube; the conductive tube is connected with a first anode of the electrolytic separator;
the supporting spring is connected with the far end of the conveying steel pipe;
a second cathode located at a distal end of the support spring;
the cathode conductive wire penetrates through the conveying steel pipe, the near end of the cathode conductive wire is connected with the near end of the conveying steel pipe, and the far end of the cathode conductive wire is connected with the second cathode; the second cathode, the cathode conductive wire and the conveying steel pipe form a cathode passage of the electrolytic separator;
a second anode located on a distal end side of the second cathode, the distal end of the second anode being connected to the release portion;
the anode conductive wire penetrates through the conveying steel pipe, the near end of the anode conductive wire is connected with the conductive pipe, and the far end of the anode conductive wire penetrates out of the far end of the conveying steel pipe to be connected with the near end of the second anode; the second anode, the anode conductive wire and the conductive tube form a positive electrode passage of the electrolytic separator;
the conveying steel pipe conveys the spherical spoiler compressed into a rod shape into the tumor cavity through the releasing part, and the spherical spoiler is spread so as to prevent the spherical spoiler from being released from the tumor cavity; the hydrogel in the spherical spoiler gradually expands after meeting the blood in the tumor cavity and is filled in the spherical spoiler, so that the blood flow in the tumor cavity is reduced; opening the switch of the electrolytic releaser, enabling the second anode and the second cathode to conduct the positive electrode channel and the negative electrode channel through electrolyte in blood to form a low-resistance loop, enabling the release part to be broken through electrochemical dissolution, separating the spherical spoiler, and keeping the spherical spoiler in a tumor cavity;
the second anode is a stainless steel wire, and the diameter of the second anode is 0.02-0.08 mm;
the second cathode is annular or spring-shaped and is made of stainless steel or platinum alloy;
the outer diameter of the second cathode is 0.2-0.5 mm;
the distance between the second anode and the second cathode is 0.1 mm;
the anode conductive wire and the cathode conductive wire are both made of noble metal alloy wires;
the outside of the noble metal alloy wire is provided with an insulating layer;
the diameters of the anode conductive wire and the cathode conductive wire are both 0.05-0.1 mm.
2. The flow perturbation device conveying system of claim 1, wherein the conveying steel tube is a stainless steel tube or a nickel titanium tube with taper grinding, and the diameter of the conveying steel tube is 0.3-0.6 mm.
3. The flow perturbation device conveying system of claim 1, wherein the supporting spring is formed by winding stainless steel wires with a diameter of 0.03-0.08 mm, and the outer diameter of the supporting spring is 0.2-0.6 mm.
4. The spoiler delivery system according to claim 3, wherein the support spring has a support core wire in the middle thereof, the support core wire being a taper ground stainless steel wire;
the diameter of the supporting core wire is 0.05-0.36 mm.
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