CN212913299U

CN212913299U - End structure of pushing rod of electrolytic release spring ring, release system and embolism system of end structure

Info

Publication number: CN212913299U
Application number: CN202021252206.0U
Authority: CN
Inventors: 邓舒浩; 陈冰; 郭远益; 潘光亮; 张朔
Original assignee: Microport Neurotech Shanghai Co Ltd
Current assignee: Microport Neurotech Shanghai Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-09
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to an end structure of an electrolytic stripping ring pushing rod, a stripping system and a plug system thereof, wherein the end structure of the electrolytic stripping ring pushing rod comprises at least one metal wire, at least one first conductive tube, at least one insulating part and at least one second conductive tube; the at least one insulating part is respectively connected with the first conductive tube and the second conductive tube and is used for electrically insulating the first conductive tube and the second conductive tube; and one end of the at least one metal wire is electrically connected with the at least one second conductive tube. The first conductive tube and the second conductive tube are coaxially assembled into an integrated structure, the integrated structure can be inserted into an electrolysis device to form a loop, the operation steps of a doctor are simplified, the release time of a spring ring is shortened, the operation efficiency is improved, the condition that the traditional electrolysis needs a patient body to insert a pin is avoided, and the wound and the pain of the patient are reduced.

Description

End structure of pushing rod of electrolytic release spring ring, release system and embolism system of end structure

Technical Field

The utility model relates to the field of medical equipment, especially relate to an electrolysis takes off spring coil propelling movement rod end structure and release system, embolism system thereof.

Background

In recent years, the incidence of intracranial aneurysm is gradually increased, and the disease becomes a common disease, and the death and disability rate of the disease is high and not small. Treatment of intracranial aneurysms is divided into two categories: firstly, the surgery pinches closed the operation, the other kind is endovascular intervention treatment, and the risk that aneurysm is ruptured in the surgery is great, and endovascular intervention treatment has advantages such as the wound is little, the risk is little complication few, receives more and more people's attention and attention.

The aneurysm interventional therapy mainly adopts a spring ring embolization technology, and the principle of the aneurysm interventional therapy is to utilize an implantable spring ring to carry out compact embolization in the aneurysm, so that the purpose of turbulent flow is achieved, thrombus formation in the aneurysm is promoted, and intracranial aneurysm treatment is realized. The implanted spring ring needs to be pushed by a conveying system (a pushing rod), and when the implanted spring ring reaches the aneurysm, the implanted spring ring is released, so that the implanted spring ring is separated from the conveying system, and finally the conveying system (the pushing rod) is withdrawn.

The traditional aneurysm interventional therapy product Guglielmi Detachable Coil (GDC) adopts an electrolytic release mode, the positive pole of the end structure of an electrolytic release spring ring pushing rod is connected with a spring ring conveying guide wire metal exposed area, then a negative pole connecting steel needle is inserted into the subcutaneous part of a patient, the end structure of the electrolytic release spring ring pushing rod supplies power, a loop is formed through a human body, the positive pole conveying guide wire metal exposed area is dissolved, and release is completed. Although the electrolytic detachment method is stable and reliable, the operation steps are complex, the detachment time is long, and the subcutaneous insertion of the needle can cause additional trauma and pain to patients.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention provides an end structure of an electrolytic releasing spring ring pushing rod, a releasing system thereof and a plug system. Compared with the prior art, the utility model discloses can avoid traditional electrolysis to take off spring coil structure and need reduce the painful for the patient that the contact pin brought at the form of patient's health contact pin, and simplify doctor's operation mode.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

an end structure of an electrolytic uncoiling coil pushing rod comprises at least one metal wire, at least one first conductive tube, at least one insulating part and at least one second conductive tube;

the at least one insulating part is respectively connected with the first conductive tube and the second conductive tube and is used for electrically insulating the first conductive tube and the second conductive tube; and

one end of the at least one metal wire is electrically connected with the at least one second conductive tube.

Optionally, the wire fixing device further comprises at least one limiting structure, and one end of the at least one metal wire is connected with the at least one limiting structure.

Optionally, the connector further comprises at least one fixing structure formed at the end of the second conductive tube, and the at least one fixing structure is connected with the at least one metal wire.

Optionally, the wire has a proximal end, a distal end and a middle end, the middle end being located between the proximal end and the distal end.

Optionally, the material of the metal wire is selected from one or more of gold, silver, copper, platinum and stainless steel.

Optionally, the diameter range of the metal wire is 0.04-0.08 mm, and the length range of the metal wire is 1600-2400 mm.

Optionally, the proximal end of the wire is located in the lumen of the second conductive tube, the middle end of the wire is located in the lumen of the first conductive tube, and the distal end of the wire is located outside the lumen of the tube.

Optionally, at least part of the proximal end of the metal wire is a first bare metal wire which is not coated with an insulating coating, the first bare metal wire is respectively contacted with the limiting structure and the fixing structure, and the length range of the first bare metal wire is 10-50 mm.

Optionally, the middle end of the metal wire is coated with an insulating coating, and the length range of the middle end of the metal wire is 1550-2200 mm.

Optionally, the length range of the far end of the metal wire is 50-200 mm.

Optionally, the distal end of the wire has a second bare wire that is not coated with an insulating coating, the second bare wire constitutes a release structure for forming a release loop with the first conductive pipe through a dielectric solution environment, and the length of the release structure ranges from 0.01 mm to 0.08 mm.

Optionally, the first conductive tube and the second conductive tube are both made of metal tubes.

Optionally, the outer diameter range of the first conductive tube and the second conductive tube is 0.30-0.45 mm, and the inner diameter range is 0.15-0.35 mm.

Optionally, the length range of the first conductive tube is 1400-2000 mm, and the length range of the second conductive tube is 200-400 mm.

Optionally, the first conductive tube and the second conductive tube are directly connected, and the insulating portion is disposed at a connection position of the first conductive tube and the second conductive tube.

Optionally, the first conductive pipe and the second conductive pipe are embedded with each other.

Optionally, the scarf joint makes the tip of first conducting tube or second conducting tube have at least an embedding end, the length scope of at least an embedding end is 10 ~ 40 mm.

Optionally, the insulating portion is made of an insulating heat shrink tube or an insulating material.

Optionally, one end of the insulating heat-shrinkable tube is sleeved on an outer ring of one end of the first conductive tube, and the other end of the insulating heat-shrinkable tube extends into an inner ring of one end of the second conductive tube; or one end of the insulating heat-shrinkable tube is sleeved on the outer ring of one end of the second conductive tube, and the other end of the insulating heat-shrinkable tube extends into the inner ring of one end of the first conductive tube.

Optionally, the insulating material is sprayed on the joint of the first conductive tube and the second conductive tube.

Optionally, the insulating material is selected from any one of a polyimide coating, an alumina ceramic coating, a ceramic polymer coating, a polybenzimidazole coating, and a polytetrafluoroethylene coating.

Optionally, the first conductive tube and the second conductive tube are indirectly connected through the insulating part.

Optionally, the insulating part adopts a sheath to connect the first conductive tube and the second conductive tube.

Optionally, the sheath covers an outer ring of a joint of the first conductive pipe and the second conductive pipe, and the joints of the first conductive pipe and the second conductive pipe are butted or overlapped with each other.

Optionally, the length range of the sheath is 20-60 mm, and the thickness of the sheath is 0.05-0.1 mm.

Optionally, the insulating portion connects the first conductive tube and the second conductive tube by using a sleeve.

Optionally, the length range of the sleeve is 20-60 mm, and the thickness range of the sleeve is 0.1-0.15 mm.

Optionally, the insulating portion adopts a socket structure or a nut structure to connect the first conductive tube and the second conductive tube.

Optionally, the at least one limiting structure is any one of a circular ring, a cylinder, a square column or a cylinder with a hole, a square column with a hole and a sphere with a hole, and/or the material of the limiting structure (5) is one or more selected from gold, silver, copper, platinum tungsten and platinum iridium.

Optionally, the at least one limiting structure is located inside the second conductive tube; the at least one limiting structure is flush with the end face of the second conductive tube in a coplanar manner; the at least one limiting structure is positioned outside the end part of the second conductive tube.

Optionally, the distance between the at least one limiting structure located outside the end portion of the second conductive pipe and the end portion of the second conductive pipe is within a range of 0-2 mm.

Optionally, the at least one limiting structure and the second conductive tube are connected by gluing, welding or a bolt.

Optionally, one end of the fixing structure extends into the lumen of the second conductive tube and covers the limiting structure and one end of the metal wire.

Optionally, the securing structure is selected from electrically conductive adhesive materials.

Optionally, the conductive adhesive material is cured to form a hemispherical or ellipsoidal shape.

Optionally, the radius size range of the hemisphere is 0.3-0.45 mm.

Optionally, the distance between the ellipsoidal top end and the end part of the second conductive pipe is 0.15-0.65 mm.

A release system with the spring ring pushing rod end structure,

the disengagement system further comprises a disengager, the disengager comprising a power supply positive electrode and a power supply negative electrode;

the negative electrode of the power supply and the first conductive tube form a negative electrode circuit;

the positive electrode of the power supply, the second conductive tube and the metal wire form a positive electrode circuit; and

the far end of the metal wire comprises a releasing structure, and when the releasing structure of the metal wire and the first conductive tube are simultaneously positioned in a dielectric solution environment, the negative electrode circuit and the positive electrode circuit are communicated to form a releasing loop.

Optionally, the decoupler provides a direct current or an alternating current.

A release system with the spring ring pushing rod end structure,

the positive electrode of the power supply and the first conductive tube form a positive electrode circuit;

the negative electrode of the power supply, the second conductive tube and the metal wire form a negative electrode circuit; and

Optionally, the decoupler provides a direct current or an alternating current.

An embolization system with the spring coil pushing rod end structure further comprises a metal spring coil or a degradable spring coil.

Optionally, the metallic or degradable spring coil has a 2D primary structure or a 3D secondary structure.

Optionally, the material of the degradable spring ring is selected from any one of a polymer coating, a hydrophilic coating or a bioactive material coating.

Optionally, the degradable spring coil comprises at least one first coil and at least one second coil.

Optionally, the at least one first coil is coaxially arranged with the at least one second coil, and the at least one second coil is disposed in the inner cavity of the at least one first coil.

Optionally, the material of the at least one first coil is a polymer material, such as any one of polylactic acid, polyglycolic acid, a lactic acid-glycolic acid copolymer, polydioxanone, polycaprolactone, polyurethane, chitosan, and hyaluronic acid.

Optionally, the at least one first coil is made of a metal material, and the metal material is any one of magnesium and an alloy thereof, and iron and an alloy thereof.

Optionally, the at least one second coil is a radiopaque coil.

Optionally, the length of the at least one second coil is not greater than the length of the at least one first coil.

Compared with the prior art, the utility model discloses a beneficial technological effect as follows:

the first conductive tube and the second conductive tube are separated by the insulating part, so that the risk of short circuit is effectively avoided, and multiple connection modes such as scarf joint, sheathed connection, sleeve connection, socket type connection, threaded type connection and the like are arranged between the first conductive tube and the second conductive tube, so that a coaxial integrated structure is formed between the first conductive tube and the second conductive tube, and the first conductive tube and the second conductive tube can be jointly inserted into an electrolysis device to form a communicating and releasing loop to complete releasing.

(II) can make the wire catch on the second contact tube of propelling movement pole through setting up limit structure, make it and second contact tube switch-on, and set up the fixed knot structure that can electrically conduct on the second contact tube, not only can fix the wire, avoid its displacement, can increase the area of contact of wire and second contact tube again, avoid taking place the risk of opening a circuit.

(III) the utility model discloses with first electric conduction pipe and the coaxial formula structure of assembling into of second electric conduction pipe, this integral type structure can insert forms the return circuit in the electrolytic device, simplifies doctor's operating procedure, has shortened the disengagement time of spring coil, has improved operation efficiency, has avoided traditional electrolysis to take off the condition that needs patient's health contact pin, has reduced patient's wound and misery.

Drawings

Fig. 1 shows a schematic diagram of an end structure of an electrolytic decoiling ring pushing rod according to an embodiment of the present invention.

Fig. 2A shows a schematic structural view of a cathode-embedded anode in an end structure of an electrolytic decoiling ring pushing rod of the embodiment of the present invention.

Fig. 2B shows a schematic structural view of a cathode embedded in the end structure of the pushing rod of the electrolytic set-off ring of the present invention.

Fig. 3A shows a schematic structural diagram of an electrolytic decoiling ring pushing rod end structure of the present invention in which the assembling manner between the positive electrode and the negative electrode is a butt-joint sheath type.

Fig. 3B shows a schematic structural diagram of an electrolytic decoiling ring pushing rod end structure in which the assembling manner between the positive electrode and the negative electrode is a lap joint sheathing type.

Fig. 4 shows a schematic structural diagram of an electrolytic decoiling ring pushing rod end structure of the present invention in which the assembly mode between the positive electrode and the negative electrode is a sleeve type.

Fig. 5A shows a schematic structural diagram of the structure of the electrolytic set-off ring pushing rod end portion of the present invention, in which the assembling manner between the positive electrode and the negative electrode is a socket type and the positive electrode is inserted into the negative electrode.

Fig. 5B shows a schematic structural diagram of the structure of the electrolytic set-off ring pushing rod end portion of the present invention, in which the assembling manner between the positive electrode and the negative electrode is a socket type and the negative electrode is inserted into the positive electrode.

Fig. 6A shows that the assembly method between the positive pole and the negative pole in the end structure of the electrolytic stripping spring ring pushing rod of the embodiment of the present invention is nut type, the positive pole is external thread, and the negative pole is internal thread.

Fig. 6B shows a schematic structural diagram of the embodiment of the present invention, in the end structure of the electrolytic releasing ring pushing rod, the assembly mode between the positive electrode and the negative electrode is nut type, the positive electrode is internal thread, and the negative electrode is external thread.

Fig. 7A is a schematic structural view of an insulating heat-shrinkable tube sleeve outside a negative electrode in an end structure of an electrolytic decoiling ring pushing rod according to an embodiment of the present invention.

Fig. 7B is a schematic structural view of an insulating heat-shrinkable tube sleeve outside the positive electrode in the end structure of the pushing rod of the electrolytic set-off ring according to the embodiment of the present invention.

Fig. 8A shows a schematic structural diagram of the present invention, in which the insulating coating is coated on the negative electrode in the end structure of the pushing rod of the electrolytic set-off ring.

Fig. 8B shows a schematic structural diagram of the application of the insulating coating to the positive electrode in the end structure of the pushing rod of the electrolytic decoiling ring according to the embodiment of the present invention.

Fig. 9 shows a schematic diagram of the limiting structure and the positive electrode in the end structure of the pushing rod of the electrolytic unclamping ring of the embodiment of the present invention through gluing or welding.

Fig. 10 is a schematic diagram showing the connection between the limiting structure and the positive electrode through the plug pin in the end structure of the pushing rod of the electrolytic set-releasing ring of the present invention.

Fig. 11 is a schematic structural view showing that the fixing structure in the end structure of the pushing rod of the electrolytic set-off ring is hemispherical in the embodiment of the present invention.

Fig. 12A is a schematic structural view of a large-area ellipsoid fixing structure in the end structure of the pushing rod of the electrolytic set-off ring in the embodiment of the present invention.

Fig. 12B is a schematic structural view of a small-area ellipsoid-shaped fixing structure in the end structure of the pushing rod of the electrolytic set-off ring in the embodiment of the present invention.

In the drawings, the reference numbers: 1. a metal wire; 2. a first conductive tube; 3. an insulating section; 301. an insulating heat shrink tube; 302. an insulating material; 4. a second conductive tube; 5. a limiting structure; 6. a fixed structure; 7. releasing the structure; 8. an embedded end; 9. sheathing; 10. a sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In this application, "proximal" and "distal" are relative orientations, relative positions, directions of elements or actions with respect to each other from the perspective of a physician using the product, although "proximal" and "distal" are not intended to be limiting, but "proximal" generally refers to the end of the product that is closer to the physician during normal operation, and "distal" generally refers to the end that is first introduced into the patient.

Referring to fig. 1, a schematic diagram of an end portion structure of an electrolytic releasing spring ring pushing rod according to an embodiment of the present invention is shown, where the end portion structure of the electrolytic releasing spring ring pushing rod includes at least one metal wire 1, at least one first conductive tube 2, at least one insulating portion 3 and at least one second conductive tube 4, and the at least one insulating portion 3 is connected to the first conductive tube 2 and the second conductive tube 4, respectively, and is used to insulate the first conductive tube 2 from the second conductive tube 4; and one end of the at least one metal wire 1 is electrically connected with the at least one second conductive tube 4.

First conductive tube 2 is the negative pole in this embodiment one, second conductive tube 4 is anodal, and the one end of wire 1 penetrates inside the cavity lumen and colludes on limit structure 5, still a shaping fixed knot constructs 6 at the tip of second conductive tube 4, and fixed knot constructs 6 and makes wire 1 and second conductive tube 4 firmly be connected, avoids producing contact failure's problem, guarantees that second conductive tube 4 and wire 1 circular telegram. The first conductive tube 2, the second conductive tube 4, the metal wire 1 and the insulating part 3 are assembled together into an integrated structure and inserted into the releasing device to be electrified to form a loop, so that the releasing is conveniently, quickly and effectively completed. In other embodiments, the first conductive tube 2 may be a positive electrode, and the second conductive tube 4 may be a negative electrode.

The metal wire 1 is selected from a metal wire material with good conductivity, in the first embodiment, the metal wire 1 is made of stainless steel, and the metal wire material includes, but is not limited to, one or more of gold, silver, copper, platinum and stainless steel. As shown in fig. 1, in the end structure of the electrolytic set-off coil pushing rod of the present invention, the metal wire 1 is divided into three sections and located at three positions, specifically, the metal wire 1 has a near end, a far end and a middle end, and the middle end is located between the near end and the far end. Wherein, the near-end of wire 1 is located the lumen of second electric conduction pipe 4, and the middle-end of wire 1 is located the lumen of first electric conduction pipe 2, and the distal end of wire 1 is located outside the lumen of pipe, the utility model discloses do not do the restriction to the three position of 1 three-section of wire, as long as can realize with the circular telegram of second electric conduction pipe 4 can.

The near end of the metal wire 1 is a first exposed metal wire which is not coated with an insulating coating, the first exposed metal wire is respectively contacted with the limiting structure 5 and the fixing structure 6, and the length range of the first exposed metal wire is 0.1-1 mm. Preferably, in the first embodiment, the length of the first bare metal wire is in a range of 0.3 to 0.5 mm.

The middle end of the metal wire 1 is coated with an insulating coating, and the length range of the middle end of the metal wire 1 is 1550-2200 mm. The length range of the far end of the metal wire 1 is 10-30 mm. Preferably, in the first embodiment, the length of the middle end of the wire 1 ranges from 1800 mm to 1900mm, and the length of the distal end of the wire 1 ranges from 15mm to 25 mm.

The far end of the metal wire 1 is provided with a second exposed metal wire which is not coated with an insulating coating, the second exposed metal wire forms a releasing structure 7 which is used for forming a releasing loop with the first conductive tube 2 through a dielectric solution environment (such as a body fluid environment), and the length range of the releasing structure 7 is 0.01-0.08 mm. Preferably, in the first embodiment, the length of the releasing structure 7 is preferably 0.025-0.06 mm.

The diameter range of the metal wire 1 is 0.04-0.08 mm, and the length range of the metal wire 1 is 1600-2400 mm. Preferably, in the first embodiment, the diameter of the metal wire 1 is preferably in the range of 0.04 to 0.06mm, and the length of the metal wire 1 is preferably in the range of 1800 to 1900 mm.

The structure and connection relationship of the first conductive tube 2 and the second conductive tube 4 in the end structure of the electrolytic stripping spring ring pushing rod according to an embodiment of the present invention will be described in detail as follows:

the first conductive tube 2 and the second conductive tube 4 may be directly connected as shown in fig. 1, fig. 2A or fig. 2B, and the insulating portion 3 is disposed at the connection position of the first conductive tube 2 and the second conductive tube 4. Specifically, in fig. 1, fig. 2A or fig. 2B, the first conductive tube 2 and the second conductive tube 4 are directly connected by being embedded into each other, the end of the first conductive tube 2 or the second conductive tube 4 is provided with at least one embedded end 8 by the above embedding method, the length range of the embedded end 8 is 10-40 mm, and the diameter of the tail of the embedded end 8 gradually decreases toward the head of the embedded end 8. As shown in fig. 2A, the embedded end 8 may be disposed on the first conductive tube 2 and embedded in the second conductive tube 4 through the embedded end 8 on the first conductive tube 2. As shown in fig. 2B, the embedded end 8 may be disposed on the second conductive tube 4, and embedded in the first conductive tube 2 through the embedded end 8 on the second conductive tube 4. In the first embodiment, the fitting method of fig. 2A is adopted, and preferably, in the fitting method of the first conductive tube 2 being fitted into the second conductive tube 4, the length of the fitting end 8 is preferably in the range of 15 to 20 mm. In some embodiments, the embedded end 8 may be ground from an extension of the first conductive tube 2 or the second conductive tube 4.

Next, the insulating portion 3 mentioned in the above fitting method will be described in detail:

as shown in fig. 7 and 8, the insulating portion 3 is made of an insulating heat shrinkable tube 301 or an insulating material 302. The insulating portion 3 is used to connect the first conductive tube 2 and the second conductive tube 4, and is intended to electrically insulate the first conductive tube 2 from the second conductive tube 4, thereby preventing occurrence of a short circuit.

As shown in fig. 7A, when the insulating heat shrinkable tube 301 is used, one end of the insulating heat shrinkable tube 301 is sleeved on the outer ring of one end of the first conductive tube 2, and the other end of the insulating heat shrinkable tube 301 extends into the inner ring of one end of the second conductive tube 4; alternatively, as shown in fig. 7B, one end of the insulating heat shrinkable tube 301 is sleeved on the outer ring of one end of the second conductive tube 4, and the other end of the insulating heat shrinkable tube 301 extends into the inner ring of one end of the first conductive tube 2. In some embodiments, insulating heat shrink tubing 301 is PET heat shrink tubing.

When an insulating material 302 is used, as shown in fig. 8, the insulating material 302 is sprayed on the connection portion of the first conductive tube 2 and the second conductive tube 4. The material of the insulating material 302 is selected from any one of a polyimide coating, an alumina ceramic coating, a ceramic polymer coating, a polybenzimidazole coating, and a polytetrafluoroethylene coating.

The first conductive tube 2 and the second conductive tube 4 may be indirectly connected through an insulating portion 3.

Optionally, the insulating part 3 connects the first conductive tube 2 and the second conductive tube 4 by using a sheath 9, where the sheath 9 covers an outer ring of a joint of the first conductive tube 2 and the second conductive tube 4, as shown in fig. 3A, the joints of the first conductive tube 2 and the second conductive tube 4 are butted with each other, and as shown in fig. 3B, the joints of the first conductive tube 2 and the second conductive tube 4 are overlapped with each other. The length range of the sheath 9 is 5-30 mm, and the thickness range of the sheath 9 is 0.005-0.1 mm.

Optionally, the insulating portion 3 uses a sleeve 10 to indirectly connect the first conductive tube 2 and the second conductive tube 4, and two ends of the sleeve 10 are respectively sleeved into inner rings of the first conductive tube 2 and the second conductive tube 4. The length range of the sleeve 10 is 5-30 mm, and the thickness range of the sleeve 10 is 0.1-0.15 mm.

Optionally, the insulating part 3 connects the first conductive tube 2 and the second conductive tube 4 by using a socket structure, as shown in fig. 5A, an end of the first conductive tube 2 has a plug structure, an end of the second conductive tube 4 has a socket structure, or as shown in fig. 5B, an end of the first conductive tube 2 has a socket structure, and an end of the second conductive tube 4 has a plug structure.

Optionally, the insulating part 3 is configured to connect the first contact tube 2 and the second contact tube 4 by using a nut structure, as shown in fig. 6A, an end of the first contact tube 2 has an external thread, an end of the second contact tube 4 has an internal thread, or as shown in fig. 6B, an end of the first contact tube 2 has an internal thread, and an end of the second contact tube 4 has an external thread.

The first conductive tube 2 and the second conductive tube 4 are both made of metal tubes. The first conductive tube 2 and the second conductive tube 4 have an outer diameter of 0.30 to 0.45mm and an inner diameter of 0.15 to 0.35 mm. The length range of the first conductive tube 2 is 1400-2000 mm, and the length range of the second conductive tube 4 is 200-400 mm.

Next, a specific description will be given of the limit structure 5 in the end structure of the electrolytic stripping ring pushing rod according to an embodiment of the present invention:

the limiting structure 5 is provided to hook the first exposed metal wire at the proximal end of the metal wire 1 on the second conductive tube 4 and to be electrically connected with the second conductive tube 4. The limiting structure 5 is made of any one of a circular ring, a cylinder, a square column or a cylinder with holes, a square column with holes and a sphere with holes, and the material of the limiting structure includes, but is not limited to, gold, silver, copper, platinum tungsten, platinum iridium and the like. Preferably, the limiting structure 5 in this embodiment is a circular ring. The installation position of the limiting structure 5 in the second conductive tube 4 has the following installation positions:

first mounting position:

the limiting structure 5 is positioned inside the second conductive tube 4.

Second mounting position:

the limiting structure 5 is flush with the end face of the second conductive tube 4 in a coplanar manner, and the second installation position is selected for the embodiment.

Third mounting position:

the limiting structure 5 is located outside the end of the second conductive tube 4. The distance range between the limiting structure 5 and the end part of the second conductive tube 4, which is positioned outside the end part of the second conductive tube 4, is 0-2 mm, and preferably, the distance range between the limiting structure 5 and the end part of the second conductive tube 4, which is positioned outside the end part of the second conductive tube 4, is 0.1-0.5 mm.

As shown in fig. 9 and 10, in the three installation positions, the connection manner between the limiting structure 5 and the second conductive tube 4 includes, but is not limited to, gluing, welding or plugging, and in this embodiment, the limiting structure 5 and the second conductive tube 4 are connected by welding.

Next, a fixing structure 6 in the end structure of the electrolytic unclamping ring pushing rod according to an embodiment of the present invention will be described in detail:

as shown in fig. 11, 12A and 12B, one end of the fixing structure 6 extends into the lumen of the second conductive tube 4 and covers the limiting structure 5 and one end of the metal wire 1. The fixing structure 6 is made of a conductive adhesive material, and in this embodiment, a conductive adhesive is used, and the conductive adhesive forms a hemispherical shape or an ellipsoidal shape after being cured. Wherein the radius of the hemisphere ranges from 0.29 to 0.32 mm. As shown in FIG. 12, the distance from the top of the ellipsoid to the end of the second conductive tube 4 is 0.15-0.65 mm, and the preferred distance from the top of the ellipsoid to the end of the second conductive tube 4 is 0.15-0.25 mm in this embodiment.

The utility model discloses a further embodiment provides a release system with spring coil propelling rod end structure, release system still includes the releaser, the releaser provides direct current or alternating current, the releaser includes power positive pole and power negative pole;

Yet another embodiment of the present invention provides a disengagement system having the spring coil pushing rod end structure, the disengagement system further comprising a disengager, the disengager providing a direct current or an alternating current, the disengager comprising a positive power supply and a negative power supply;

A further embodiment of the utility model provides a embolism system, the embolism system is including the push rod and the spring coil that have above-mentioned end structure, the spring coil is metal spring coil or degradable spring coil.

Preferably, when the spring ring is a metal spring ring, the metal spring ring has a 2D primary structure or a 3D secondary structure.

Preferably, when the spring ring is a degradable spring ring, the degradable spring ring has a primary structure or a 3D secondary structure.

Preferably, when the degradable spring ring is used as the spring, the material of the degradable spring ring is selected from any one of a polymer coating, a hydrophilic coating or a bioactive material coating.

The metal spring ring or the degradable spring ring comprises a first coil and a second coil, the first coil and the second coil are coaxially arranged, and the second coil is arranged in an inner cavity of the first coil. The second coil is a radiopaque coil. The length of the second coil is not more than that of the at least one first coil.

Preferably, the material of the first coil is a polymer material, such as any one of polylactic acid, polyglycolic acid, lactic acid-glycolic acid copolymer, polydioxanone, polycaprolactone, polyurethane, chitosan, and hyaluronic acid.

Preferably, the material of the first coil may also be selected from any one of a metal material, magnesium and its alloy, and iron and its alloy.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. Electrolytic release spring coil propelling movement pole tip structure, its characterized in that:

comprises at least one metal wire (1), at least one first conductive tube (2), at least one insulating part (3) and at least one second conductive tube (4);

the at least one insulating part (3) is respectively connected with the first conductive tube (2) and the second conductive tube (4) and is used for electrically insulating the first conductive tube (2) and the second conductive tube (4); and

one end of the at least one metal wire (1) is electrically connected with the at least one second conductive tube (4).

2. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the wire fixing device further comprises at least one limiting structure (5), and one end of the at least one metal wire (1) is connected with the at least one limiting structure (5).

3. The electrolytic decoiling ring pusher bar end construction of claim 2, wherein: the metal wire fixing structure further comprises at least one fixing structure (6) formed at the end part of the second conductive tube (4), and the at least one fixing structure (6) is connected with the at least one metal wire (1).

4. The electrolytic decoiling ring pusher bar end construction of claim 3, wherein: the wire (1) has a proximal end, a distal end and an intermediate end, the intermediate end being located between the proximal and distal ends.

5. The electrolytic decoiling ring pusher bar end construction of claim 4, wherein: the metal wire (1) is made of one or more materials selected from gold, silver, copper, platinum and stainless steel, the diameter range of the metal wire (1) is 0.04-0.08 mm, and the length range of the metal wire (1) is 1600-2400 mm.

6. The electrolytic decoiling ring pusher bar end construction of claim 4, wherein: the near end of the metal wire (1) is positioned in the lumen of the second conductive tube (4), the middle end of the metal wire (1) is positioned in the lumen of the first conductive tube (2), and the far end of the metal wire (1) is positioned outside the lumen of the first conductive tube (2).

7. The electrolytic decoiling ring pusher bar end construction of claim 6, wherein: at least part of the near end of the metal wire (1) is a first bare metal wire which is not coated with an insulating coating, the first bare metal wire is respectively contacted with the limiting structure (5) and the fixing structure (6), and the length range of the first bare metal wire is 10-50 mm; and/or the middle end of the metal wire (1) is coated with an insulating coating, and the length range of the middle end of the metal wire (1) is 1550-2200 mm; and/or the length range of the far end of the metal wire (1) is 50-200 mm.

8. The electrolytic decoiling ring pusher bar end construction of claim 7, wherein: the far end of the metal wire (1) is provided with a second bare metal wire which is not coated with an insulating coating, the second bare metal wire forms a release structure (7) used for forming a release loop with the first conductive tube (2) through a dielectric solution environment, and the length range of the release structure (7) is 0.01-0.08 mm.

9. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the first conductive tube (2) and the second conductive tube (4) are both made of metal tubes; and/or the outer diameter range of the first conductive pipe (2) and the second conductive pipe (4) is 0.30-0.45 mm, and the inner diameter range is 0.15-0.35 mm.

10. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the length range of the first conductive tube (2) is 1400-2000 mm, and the length range of the second conductive tube (4) is 200-400 mm.

11. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the first conductive tube (2) is directly connected with the second conductive tube (4), and the insulating part (3) is arranged at the joint of the first conductive tube (2) and the second conductive tube (4).

12. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the first conductive pipe (2) and the second conductive pipe (4) are embedded and connected with each other.

13. The electrolytic decoiling ring pusher bar end construction of claim 12, wherein: the embedding connection enables the end part of the first conductive tube (2) or the second conductive tube (4) to be provided with at least one embedding end, and the length range of the at least one embedding end is 10-40 mm.

14. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the insulating part (3) is made of an insulating heat shrink tube (301) or an insulating material (302).

15. The electrolytic decoiling coil pusher bar end construction of claim 14, wherein: one end of the insulating heat-shrinkable tube (301) is sleeved on the outer ring of one end of the first conductive tube (2), and the other end of the insulating heat-shrinkable tube (301) extends into the inner ring of one end of the second conductive tube (4); or one end of the insulating heat-shrinkable tube (301) is sleeved on the outer ring of one end of the second conductive tube (4), and the other end of the insulating heat-shrinkable tube (301) extends into the inner ring of one end of the first conductive tube (2).

16. The electrolytic decoiling coil pusher bar end construction of claim 14, wherein: the insulating material (302) is sprayed at the joint of the first conductive tube (2) and the second conductive tube (4), and the material of the insulating material (302) is selected from any one of a polyimide coating, an alumina ceramic coating, a ceramic polymer coating, a polybenzimidazole coating and a polytetrafluoroethylene coating.

17. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the first conductive tube (2) and the second conductive tube (4) are indirectly connected through the insulating part (3).

18. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the insulation part (3) adopts a sheath to connect the first conductive tube (2) and the second conductive tube (4), the sheath covers the outer ring of the joint of the first conductive tube (2) and the second conductive tube (4), and the joints of the first conductive tube (2) and the second conductive tube (4) are mutually butted or mutually lapped.

19. The electrolytic decoiling coil pusher bar end construction of claim 18, wherein: the length range of the sheath is 20-60 mm, and the thickness of the sheath is 0.05-0.1 mm.

20. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the insulating part (3) adopts the sleeve pipe to make first conductive tube (2) with second conductive tube (4) are connected, the sheathed tube length scope is 20 ~ 60mm, the sheathed tube thickness scope is 0.1 ~ 0.15 mm.

21. The electrolytic decoiling ring pusher bar end construction of claim 1, wherein: the insulation part adopts a socket structure or a nut structure to connect the first conductive tube (2) and the second conductive tube (4).

22. The electrolytic decoiling ring pusher bar end construction of claim 2, wherein: the at least one limiting structure (5) is any one of a circular ring, a cylinder, a square column or a cylinder with a hole, a square column with a hole and a sphere with a hole; and/or the material of the limiting structure (5) is selected from one or more of gold, silver, copper, platinum tungsten and platinum iridium.

23. The electrolytic decoiling ring pusher bar end construction of claim 2, wherein: the at least one limiting structure (5) is positioned inside the second conductive tube (4); the at least one limiting structure (5) is flush with the end face of the second conductive tube (4) in a coplanar manner; the at least one limiting structure (5) is positioned outside the end part of the second conductive tube (4).

24. The electrolytic decoiling coil pusher bar end construction of claim 23, wherein: the distance range between the at least one limiting structure (5) and the end part of the second conductive tube (4) outside the end part of the second conductive tube (4) is 0-2 mm.

25. The electrolytic decoiling ring pusher bar end construction of claim 2, wherein: the at least one limiting structure (5) is connected with the second conductive tube (4) through gluing, welding or a bolt.

26. The electrolytic decoiling ring pusher bar end construction of claim 3, wherein: one end of the fixing structure (6) extends into the tube cavity of the second conductive tube (4) and covers the limiting structure (5) and one end of the metal wire (1).

27. The electrolytic decoiling ring pusher bar end construction of claim 3, wherein: the fixing structure (6) is selected from conductive adhesive materials which form a hemispherical shape or an ellipsoidal shape after being solidified.

28. The electrolytic decoiling ring pusher bar end construction of claim 27, wherein: the semi-spherical radius size range is 0.3-0.45 mm, and the distance range from the ellipsoidal top end to the end part of the second conductive tube (4) is 0.15-0.65 mm.

29. A release system having a spring coil push rod end construction as claimed in any one of claims 1 to 28, wherein:

30. A release system having a spring coil push rod end construction as claimed in any one of claims 1 to 28, wherein:

31. The release system according to claim 29 or 30, wherein: the decoupler provides either a direct current or an alternating current.

32. An embolization system having a coil push rod end structure according to any one of claims 1 to 28, wherein: the embolic system further comprises a metallic or degradable spring coil.

33. The embolization system of claim 32, wherein: the metallic or degradable spring coil has a 2D primary structure or a 3D secondary structure.

34. The embolization system of claim 32, wherein: the material of the degradable spring ring is selected from any one of a polymer coating, a hydrophilic coating or a bioactive material coating.

35. The embolization system of claim 32, wherein: the degradable spring ring comprises at least one first coil and at least one second coil.

36. The embolization system of claim 35, wherein: the at least one first coil and the at least one second coil are coaxially arranged, and the at least one second coil is arranged in the inner cavity of the at least one first coil.

37. The embolization system of claim 35, wherein: the material of at least one first coil adopts polymer material, polymer material includes polylactic acid, polyglycolic acid, lactic acid-glycolic acid copolymer, polydioxanone, polycaprolactone, polyurethane, chitosan, hyaluronic acid arbitrary one.

38. The embolization system of claim 35, wherein: the material of the at least one first coil is selected from metal materials, the metal materials are any one of magnesium and alloy thereof, iron and alloy thereof, and the at least one second coil is a radiopacity coil.

39. The embolization system of claim 35, wherein: the length of the at least one second coil is not greater than the length of the at least one first coil.