CN114082077A

CN114082077A - Adjustable micro catheter for cerebrovascular intervention and using method thereof

Info

Publication number: CN114082077A
Application number: CN202111411441.7A
Authority: CN
Inventors: 廖磊; 张辉; 朱星阳
Original assignee: Nanyang Second General Hospital
Current assignee: Nanyang Second General Hospital
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-02-25

Abstract

The invention discloses an adjustable microcatheter for cerebrovascular intervention and a using method thereof, wherein the adjustable microcatheter comprises the following steps: intervene the pipe, intervene the pipe tip and install working catheter, and working catheter's bottom is installed and is advanced the structure, and the handle is installed to the right downside of working catheter simultaneously to the internally mounted of handle has locking structure, intervenes and is detachable construction between pipe and the working catheter, intervenes the inside fixed spacing pipe that is provided with of body of pipe, and spacing inside interlude has the seal wire, and the right-hand member and the fixed setting of connecting pipe of body simultaneously. According to the adjustable microcatheter for cerebrovascular intervention and the using method thereof, when a doctor operates, a palm is held on the handle, the index finger operates the trigger, and the middle finger presses the transmission block, so that the doctor can operate the device with one hand, the operation difficulty of the device is reduced, the operation difficulty is reduced, one hand of the doctor is liberated, and other equipment and tools can be operated in the operation.

Description

Adjustable micro catheter for cerebrovascular intervention and using method thereof

Technical Field

The invention relates to the field of medical instruments, in particular to an adjustable microcatheter for cerebrovascular intervention and a using method thereof.

Background

Cerebral hemorrhage refers to the condition of cerebral hemorrhage in non-traumatic brain parenchyma, and the cause of the cerebral hemorrhage is mainly related to the pathological changes of cerebral vessels, namely, related to hyperlipidemia, diabetes, hypertension, aging of blood vessels and the like; the traditional treatment after cerebral hemorrhage is medicine, but the medicine has slow hemostasis, and sequela is often left after craniotomy after blood coagulation; the interventional therapy operations (arterial micro-guide wire expansion operations and stent implantation operations) are diagnosis and treatment operations performed by adopting a series of interventional instruments and materials and modern digital diagnosis and treatment equipment; compared with the traditional surgical operation, the method only needs local anesthesia and opens a small opening with the diameter of 1-2mm, so that the method has the advantages of less bleeding, small wound, less complication, quick postoperative recovery, safety, reliability and the like, thereby greatly relieving the pain born by the patient.

According to the above, the cranial nerve interventional therapy is a minimally invasive intracavity surgical treatment of cerebrovascular diseases by forming a small hole at the femoral artery blood vessel part of a human body and then penetrating a micro guide wire into the blood vessel of the patient; wherein the microcatheter is after deep into the assigned position, in order to improve the stability and the accuracy of treatment, the fastness and the stability of microcatheter are crucial, but current microcatheter is because of simple structure, function singleness, lacks fine fixed, consequently has not only improved the risk of operation.

In order to solve the above problems, through search, the patent with the publication number of CN109303963A discloses an adjustable microcatheter for cerebrovascular intervention, which further comprises a catheter body, an avoiding hole, a patch, a cushion, a ferrule, a splint, a threaded sleeve, a handle, an insulating sleeve, a push plate, a spring, a conductive block, and an electromagnet, wherein the avoiding hole is located inside the catheter body, the avoiding hole is a circular through hole, the avoiding hole is connected with a guide wire in a sliding manner, the patch is penetrated through the outer wall of the catheter body, the patch is connected with the catheter body in a sliding manner, the cushion is penetrated through the outer wall of the catheter body, when one end of the guide wire enters into a human body, the doctor operates the length inside the human body through one end of the guide wire, when the doctor operates, one hand operates the guide wire, the other hand holds the catheter, and the two hands of the doctor are occupied, the time of the operation is increased.

In view of the above, the present invention has been made in view of the above problems.

Disclosure of Invention

The invention provides an adjustable microcatheter for cerebrovascular intervention and a using method thereof in order to make up for market vacancy.

The present invention is directed to an adjustable microcatheter for cerebrovascular intervention and method of use thereof to solve the problems set forth above in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a use method of an adjustable microcatheter for cerebrovascular intervention, comprising the steps of: inspection equipment, fixed pipe, regulation seal wire position, washing intervene pipe and deposit equipment:

step A. checking the equipment: whether the device is damaged or not is checked, and the reliability of the device in working time is ensured;

step B, fixing the catheter: placing an interventional catheter of the device at a lesion and adhering to the skin of a patient using an application at the end of the interventional catheter;

step C, adjusting the position of the guide wire: by the index finger; the trigger is pulled, so that the shifting teeth drive the outer protective tube to move leftwards in the guide frame through the upper clamping teeth, the guide wire is driven to move leftwards in the interventional catheter, and the guide wire in the interventional catheter gradually extends in the body of the patient until the guide wire extends to the target position in the body;

step D, cleaning the interventional catheter: the interventional catheter and the working catheter are disassembled through the splicing structure, and after the disassembly is finished, the interventional catheter can be cleaned;

step E, equipment storage: and placing the cleaned interventional catheter and the cleaned working catheter in the storage box.

An adjustable microcatheter for cerebrovascular intervention, comprising:

the device comprises an intervention catheter, a working catheter is mounted at the end of the intervention catheter, a progressive structure is mounted at the bottom of the working catheter, a handle is mounted at the lower right side of the working catheter, a locking structure is mounted inside the handle, a detachable structure is arranged between the intervention catheter and the working catheter, a limiting pipe is fixedly arranged inside a catheter body of the intervention catheter, a guide wire is inserted into the limiting pipe in a penetrating manner, the right end of the catheter body is fixedly arranged with a connecting pipe, and a splicing structure is mounted at one end, away from the catheter body, of the connecting pipe;

the structure of advancing progressively, the trigger upper end of structure of advancing progressively articulates in the inside of work pipe through the round pin axle, and inside the trigger was arranged in the safety frame, the safety frame was fixed to be set up at the work pipe downside, and the upper end of trigger is installed simultaneously and is dialled the tooth to dial the upside of tooth and install the outer pillar, the bottom of outer pillar evenly is provided with the latch on the multiunit, and outer pillar outside parcel has the guide frame, and outer pillar inside fixed seal wire that is provided with simultaneously, the guide frame is installed at the inside upside of work pipe.

The locking structure, the driving block activity of locking structure sets up in the inside of handle, and the driving block is in the same place with vertical pole installation, and the support plate is installed to the upper end of vertical pole simultaneously to the last surface mounting of support plate has latch down, and lower latch joint is between adjacent two sets of last latches.

Furthermore, intervene the pipe and include body, spacing pipe, connecting pipe and mosaic structure, and spacing intraduct is seted up the section and is the spacing hole of circular shape, and the diameter in spacing hole is greater than the diameter of seal wire simultaneously.

Furthermore, the connecting pipe is connected with the working pipe through a splicing structure, the splicing structure comprises a blocking pad, a positioning groove, a connecting wing and a positioning plate, the end part of the connecting pipe is fixedly arranged with the blocking pad, the left side surface of the blocking pad is provided with a plaster, and the blocking pad is fixed with the connecting wing through a screw.

Further, two sets of constant head tanks have been seted up to the right side surface of fender pad, and connect the fixed setting of wing tip and work pipe, and the left side surface mounting who connects the wing has two sets of locating plates, and the section of locating plate and constant head tank is the arc setting, and the size looks adaptation of locating plate and constant head tank, locating plate peg graft inside the constant head tank.

Furthermore, the progressive structure comprises a safety frame, a trigger, a reset spring, a shifting tooth, a guide frame, an outer protective pipe and an upper clamping tooth, the upper end of the shifting tooth is clamped between the two groups of upper clamping teeth, and the sections of the upper clamping tooth and the lower clamping tooth are arranged in a right triangle manner.

Further, reset spring is installed to the inside upper right side of insurance frame, and reset spring keeps away from the fixed setting of one end and the trigger upper right side of insurance frame, and the trigger is "C" shape setting, and the inside outer pillar of guide frame is the lateral shifting structure.

Further, locking structure includes latch, driving block, stress surface, support plate, vertical pole, fluting, pushes down face and return spring down, and vertical pole and driving block be "ten" font setting, and the tip of vertical pole and driving block all sets up flutedly, all installs return spring in the recess of vertical pole and driving block tip simultaneously.

Further, vertical pole is inside to have seted up the fluting, and the stress surface has been seted up to the inside downside of fluting, stress surface and holding down face parallel arrangement, and the transmission piece alternates inside the fluting simultaneously, and the holding down face has been seted up to the right downside of transmission piece, and the holding down face sets up with the stress surface contact.

An adjustable microcatheter for cerebrovascular intervention is used through a method of using the adjustable microcatheter for cerebrovascular intervention.

Compared with the prior art, the invention has the beneficial effects that:

1. when a doctor operates, the palm is held on the handle, the index finger operates the trigger, and the middle finger presses the transmission block, so that the doctor can operate the device with one hand, the operation difficulty of the device is reduced, the operation difficulty is reduced, one hand of the doctor is liberated, and other equipment and tools can be operated in the operation;

2. the guide wire is arranged in the limiting pipe to limit the guide wire, so that the guide wire can be limited and guided, and the guide wire is prevented from shaking to a large extent in the interventional catheter;

3. the interventional catheter and the working catheter are connected and disassembled through the splicing structure, only the interventional catheter is cleaned, the working catheter does not need to be cleaned, and the locking structure and the progressive structure are prevented from being damaged by water while water resources are saved;

4. the transmission block is loosened, the transmission block and the vertical rod are driven to recover to the original position under the reset operation of the return spring, and the upper latch is clamped by the lower latch at the moment, so that the positioning operation of the guide wire is completed.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1 of the structure of the present invention;

FIG. 3 is a schematic view of a progressive structure and a locking structure of the present invention;

FIG. 4 is an enlarged schematic view at C of FIG. 3 of the structure of the present invention;

FIG. 5 is a schematic view of a locking arrangement of the present invention;

FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 3 of the structure of the present invention;

FIG. 7 is a schematic cross-sectional view B-B of FIG. 3 illustrating the structure of the present invention;

FIG. 8 is a schematic cross-sectional view taken along line C-C of FIG. 2 of the structure of the present invention;

FIG. 9 is a schematic view of a drive block of the construction of the present invention;

FIG. 10 is a schematic illustration of a splice structure of the inventive structure;

fig. 11 is a side view of a deflector pad of the construction of the present invention.

In the figure: 1. an interventional catheter; 11. a pipe body; 12. a limiting pipe; 13. a connecting pipe; 14. splicing structures; 141. a blocking pad; 142. positioning a groove; 143. a connecting wing; 144. positioning a plate; 2. a working conduit; 3. a progressive structure; 31. a safety frame; 32. a trigger; 33. a return spring; 34. shifting teeth; 35. a guide frame; 36. an outer protecting pipe; 37. upper latch teeth; 4. a locking structure; 40. a lower latch; 41. a transmission block; 42. a stress surface; 43. a carrier plate; 44. a vertical rod; 45. grooving; 46. pressing the surface; 47. a return spring; 5. a handle; 6. a guidewire.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows: a use method of an adjustable microcatheter for cerebrovascular intervention, comprising the steps of: inspection equipment, catheter fixation, guide wire 6 position adjustment, interventional catheter 1 cleaning and storage equipment:

step B, fixing the catheter: placing an interventional catheter 1 of the device at a lesion and adhering to the skin of a patient by using an application at the end of the interventional catheter 1;

step C, adjusting the position of the guide wire 6: by the index finger; the trigger 32 is pulled, so that the pulling tooth 34 drives the outer protective tube 36 to move leftwards in the guide frame 35 through the upper latch 37, and drives the guide wire 6 to move leftwards in the interventional catheter 1, so that the guide wire 6 in the interventional catheter 1 gradually extends in the body of the patient until the guide wire extends to the target position in the body;

step d, cleaning the interventional catheter 1: the interventional catheter 1 and the working catheter 2 are disassembled through the splicing structure 14, and after the disassembly is finished, the interventional catheter 1 can be cleaned;

step E, equipment storage: the cleaned interventional catheter 1 and the working catheter 2 are placed inside the storage box.

The second embodiment is as follows: referring to fig. 1-11, the present invention provides a technical solution: an adjustable microcatheter for cerebrovascular intervention, comprising: an interventional catheter 1, a progressive structure 3 and a locking structure 4;

the end part of the interventional catheter 1 is provided with a working catheter 2, the bottom of the working catheter 2 is provided with a progressive structure 3, the right lower side of the working catheter 2 is provided with a handle 5, the inside of the handle 5 is provided with a locking structure 4, a detachable structure is arranged between the interventional catheter 1 and the working catheter 2, a limiting pipe 12 is fixedly arranged inside a pipe body 11 of the interventional catheter 1, a guide wire 6 is inserted inside the limiting pipe 12, the right end of the pipe body 11 is fixedly arranged with a connecting pipe 13, and one end, away from the pipe body 11, of the connecting pipe 13 is provided with a splicing structure 14;

trigger 32 upper end of structure 3 carries on one's shoulder or back is articulated in the inside of work pipe 2 through the round pin axle, and inside trigger 32 arranged insurance frame 31 in, insurance frame 31 is fixed to be set up at work pipe 2 downside, trigger 32's upper end is installed simultaneously and is dialled tooth 34, and dial the upside of tooth 34 and install outer pillar 36, the bottom of outer pillar 36 evenly is provided with latch 37 on the multiunit, and outer pillar 36 outside parcel has guide frame 35, the inside fixed seal wire 6 that is provided with of outer pillar 36 simultaneously, guide frame 35 installs the upside in work pipe 2 inside.

The transmission block 41 of the locking structure 4 is movably arranged inside the handle 5, the transmission block 41 and the vertical rod 44 are installed together, meanwhile, the carrier plate 43 is installed at the upper end of the vertical rod 44, the lower latch 40 is installed on the upper surface of the carrier plate 43, and the lower latch 40 is clamped between the two adjacent sets of upper latches 37.

In operation: the handle 5 is held by hand, the interventional catheter 1 is inserted into a focus, at the moment, the transmission block 41 on the locking structure 4 is pressed, the lower latch 40 is separated from the upper latch 37, the trigger 32 is triggered, the trigger 32 compresses the return spring 33, the shifting tooth 34 drives the outer protective tube 36 to move leftwards in the guide frame 35 through the upper latch 37, the guide wire 6 is driven to move leftwards in the interventional catheter 1, the guide wire 6 inside the interventional catheter 1 is gradually extended in the body of a patient, the guide wire 6 can move little by little, the phenomenon that the guide wire 6 extends too long once to damage the body of the patient is avoided, when the guide wire 6 moves to a target position in the body, the transmission block 41 is loosened at the moment, under the action of a series of transmission structures, the support plate 43 drives the lower latch 40 to move downwards and is clamped on the upper latch 37, and the fixing and limiting work of the guide wire 6 in the interventional catheter 1 is completed, when the doctor operates, the palm is held on the handle 5, the index finger operates the trigger 32, and the middle finger presses the transmission block 41, so that the doctor can operate the device by one hand, the operation difficulty of the device is reduced, the operation difficulty is reduced, one hand of the doctor is liberated, and other equipment and tools can be operated in the operation.

The third concrete implementation mode: the second specific embodiment further defines that the interventional catheter 1 includes a catheter body 11, a limiting tube 12, a connecting tube 13 and a splicing structure 14, wherein a limiting hole with a circular cross section is formed in the limiting tube 12, and the diameter of the limiting hole is larger than that of the guide wire 6.

As shown in fig. 1: intervene 1 inside spacing pipes 12 that are provided with of pipe, the inside grafting of spacing pipe 12 has seal wire 6, and inside spacing pipe 12 was arranged in to seal wire 6, spacing carrying on the seal wire 6 for can carry on spacingly and the direction to seal wire 6, avoid seal wire 6 to take place rocking by a relatively large margin inside intervening 1 pipe.

The fourth concrete implementation mode: the fourth embodiment is a further limitation of the fourth embodiment, the connecting pipe 13 is connected to the working pipe 2 through a splicing structure 14, the splicing structure 14 includes a blocking pad 141, a positioning groove 142, a connecting wing 143 and a positioning plate 144, the end of the connecting pipe 13 is fixedly disposed on the blocking pad 141, the left side surface of the blocking pad 141 is provided with an application patch, and the blocking pad 141 and the connecting wing 143 are fixed through screws.

As shown in fig. 1-2 and 10-11: intervene and be connected through mosaic structure 14 between pipe 1 and the work pipe 2, can dismantle the work between pipe 1 and the work pipe 2 intervene, when wasing the device, only to intervene pipe 1 wash can, needn't wash work pipe 2, when saving the water resource, avoid locking structure 4 and progressive structure 3 to meet water damage.

The fifth concrete implementation mode: in the fourth embodiment, two positioning grooves 142 are formed in the right surface of the blocking pad 141, the end of the connecting wing 143 is fixed to the work guide 2, two positioning plates 144 are mounted on the left surface of the connecting wing 143, the positioning plates 144 and the positioning grooves 142 are arranged in an arc shape, the positioning plates 144 are matched with the positioning grooves 142 in size, and the positioning plates 144 are inserted into the positioning grooves 142.

As shown in fig. 10-11: the detachment mode between the interventional catheter 1 and the working catheter 2 is as follows: when the screws on the connecting wings 143 are disassembled, the working catheter 2 is held by hand, and the positioning plate 144 at the end part of the working catheter 2 is pulled out from the positioning groove 142, so that the disassembling operation between the interventional catheter 1 and the working catheter 2 can be completed; because the device is formed by splicing the interventional catheter 1 and the working catheter 2, the device is convenient to store and store.

The sixth specific implementation mode: the second embodiment is further limited in that the progressive structure 3 includes a safety frame 31, a trigger 32, a return spring 33, a shifting tooth 34, a guiding frame 35, an outer protecting tube 36 and an upper latch 37, an upper end of the shifting tooth 34 is clamped between the two sets of upper latches 37, and cross sections of the upper latches 37 and the lower latches 40 are both right triangles.

As shown in fig. 3-4: the progressive structure 3 works in the following way: the trigger 32 is pressed by the forefinger, the shifting tooth 34 moves leftwards through the lever principle, the outer protective tube 36 is driven to work through the upper clamping tooth 37, the outer protective tube 36 moves leftwards inside the guide frame 35, the guide wire 6 inside the outer protective tube is driven to move leftwards, and the guide wire 6 gradually moves in a human body.

The seventh embodiment: in this embodiment, a return spring 33 is installed at the upper right side inside the safety frame 31, one end of the return spring 33 away from the safety frame 31 is fixedly arranged at the upper right side of the trigger 32, the trigger 32 is arranged in a "C" shape, and the outer protection tube 36 inside the guide frame 35 is in a lateral moving structure.

As shown in fig. 6: the outer protecting pipe 36 inside the guiding frame 35 is a transverse moving structure, and when the outer protecting pipe 36 moves, the outer protecting pipe 36 can be limited and guided by the guiding frame 35 sleeved outside the outer protecting pipe.

The specific implementation mode is eight: the second specific embodiment further defines that the locking structure 4 includes a lower latch 40, a transmission block 41, a stressed surface 42, a carrier plate 43, a vertical rod 44, a groove 45, a lower pressing surface 46 and a return spring 47, wherein the vertical rod 44 and the transmission block 41 are arranged in a cross shape, the end portions of the vertical rod 44 and the transmission block 41 are both provided with a groove, and the return spring 47 is mounted in the grooves of the end portions of the vertical rod 44 and the transmission block 41.

The specific implementation method nine: this embodiment is the further restriction of embodiment eight, and vertical rod 44 is inside to have seted up fluting 45, and fluting 45 inside downside has seted up stress surface 42, stress surface 42 and the parallel arrangement of pressing surface 46 down, and transmission piece 41 alternates inside fluting 45 simultaneously, and pressing surface 46 has been seted up to the right downside of transmission piece 41, and pressing surface 46 and stress surface 42 contact setting down.

As shown in fig. 3, 5 and 7: the working mode of the locking structure 4 is as follows: pressing drive block 41, make the lower face 46 of pushing down of drive block 41 right side downside press stress surface 42, make stress surface 42 surface atress move down, make vertical pole 44 move down, the lower latch 40 of vertical pole 44 tip breaks away from last latch 37, can adjust work to the position of seal wire 6 this moment, when adjusting the position of seal wire 6 and finishing, loosen drive block 41 this moment, under return spring 47's reset work, drive block 41, vertical pole 44 resumes to original position, lower latch 40 this moment carries out the joint to last latch 37, the completion is to the positioning work of seal wire 6.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A use method of an adjustable microcatheter for cerebrovascular intervention, comprising the steps of: inspection equipment, fixed pipe, regulation seal wire (6) position, washing intervene pipe (1) and deposit equipment, its characterized in that:

step B, fixing the catheter: placing an interventional catheter (1) of the device at a lesion and adhering the interventional catheter (1) to the skin of a patient by using an application at the end of the interventional catheter;

c, adjusting the position of the guide wire (6): by the index finger; a trigger (32) is pulled, so that a pulling tooth (34) drives an outer protective tube (36) to move leftwards in a guide frame (35) through an upper clamping tooth (37), and drives a guide wire (6) to move leftwards in an interventional catheter (1), so that the guide wire (6) in the interventional catheter (1) gradually extends in the body of a patient until the guide wire extends to a target position in the body;

step D, cleaning the interventional catheter (1): the interventional catheter (1) and the working catheter (2) are disassembled through the splicing structure (14), and after the disassembly is finished, the interventional catheter (1) can be cleaned;

step E, equipment storage: the cleaned interventional catheter (1) and the cleaned working catheter (2) are placed inside a storage box.

2. An adjustable microcatheter for cerebrovascular intervention, comprising:

the catheter comprises an interventional catheter (1), a working catheter (2) is installed at the end of the interventional catheter (1), a progressive structure (3) is installed at the bottom of the working catheter (2), a handle (5) is installed on the lower right side of the working catheter (2), a locking structure (4) is installed inside the handle (5), a detachable structure is arranged between the interventional catheter (1) and the working catheter (2), a limiting pipe (12) is fixedly arranged inside a catheter body (11) of the interventional catheter (1), a guide wire (6) is inserted inside the limiting pipe (12), the right end of the catheter body (11) is fixedly arranged with a connecting pipe (13), and a splicing structure (14) is installed at one end, far away from the catheter body (11), of the connecting pipe (13);

the structure comprises a progressive structure (3), wherein the upper end of a trigger (32) of the progressive structure (3) is hinged inside a working catheter (2) through a pin shaft, the trigger (32) is arranged inside a safety frame (31), the safety frame (31) is fixedly arranged on the lower side of the working catheter (2), simultaneously, a shifting tooth (34) is arranged at the upper end of the trigger (32), an outer protective pipe (36) is arranged on the upper side of the shifting tooth (34), multiple groups of upper clamping teeth (37) are uniformly arranged at the bottom of the outer protective pipe (36), a guide frame (35) wraps the outer side of the outer protective pipe (36), simultaneously, a guide wire (6) is fixedly arranged inside the outer protective pipe (36), and the guide frame (35) is arranged on the upper side inside the working catheter (2);

locking structure (4), driving block (41) activity of locking structure (4) sets up in the inside of handle (5), and driving block (41) and vertical rod (44) are installed together, and support plate (43) are installed to the upper end of vertical rod (44) simultaneously to the last surface mounting of support plate (43) has lower latch (40), and lower latch (40) joint is between adjacent two sets of last latch (37).

3. An adjustable microcatheter for cerebrovascular intervention according to claim 2, wherein: intervene pipe (1) and include body (11), spacing pipe (12), connecting pipe (13) and mosaic structure (14), and spacing pipe (12) inside seted up the section for the spacing hole of circular shape, the diameter in spacing hole is greater than the diameter of seal wire (6) simultaneously.

4. An adjustable microcatheter for cerebrovascular intervention according to claim 4, wherein: the connecting pipe (13) and the working conduit (2) are connected through a splicing structure (14), the splicing structure (14) comprises a blocking pad (141), a positioning groove (142), a connecting wing (143) and a positioning plate (144), the end part of the connecting pipe (13) is fixedly arranged with the blocking pad (141), the left side surface of the blocking pad (141) is provided with application paste, and the blocking pad (141) and the connecting wing (143) are fixed through screws.

5. An adjustable microcatheter for cerebrovascular intervention according to claim 4, wherein: two sets of constant head tanks (142) have been seted up to the right side surface of fender pad (141), and connect wing (143) tip and fixed the setting of work pipe (2), the left side surface mounting of connecting wing (143) has two sets of locating plates (144), and the section of locating plate (144) and constant head tank (142) is the arc setting, and locating plate (144) and the size looks adaptation of constant head tank (142), and locating plate (144) are pegged graft inside constant head tank (142).

6. An adjustable microcatheter for cerebrovascular intervention according to claim 2, wherein: the progressive structure (3) comprises a safety frame (31), a trigger (32), a return spring (33), a shifting tooth (34), a guide frame (35), an outer protective pipe (36) and an upper clamping tooth (37), the upper end of the shifting tooth (34) is clamped between the two groups of upper clamping teeth (37), and the sections of the upper clamping teeth (37) and the lower clamping teeth (40) are arranged in a right-angled triangle manner.

7. An adjustable microcatheter for cerebrovascular intervention according to claim 6, wherein: reset spring (33) are installed to the inside upper right side of insurance frame (31), and reset spring (33) keep away from the one end of insurance frame (31) and trigger (32) upper right side fixed setting, and trigger (32) are "C" shape setting, and the outer pillar (36) of guide frame (35) inside are the lateral shifting structure.

8. An adjustable microcatheter for cerebrovascular intervention according to claim 2, wherein: locking structure (4) are including latch (40) down, driving block (41), stress surface (42), support plate (43), vertical pole (44), fluting (45), push down face (46) and return spring (47), and vertical pole (44) and driving block (41) are "ten" font setting, and vertical pole (44) all offer flutedly with the tip of driving block (41), all install return spring (47) in the recess of vertical pole (44) and driving block (41) tip simultaneously.

9. An adjustable microcatheter for cerebrovascular intervention according to claim 8, wherein: vertical pole (44) are inside to be seted up fluting (45), and fluting (45) inside downside has seted up stress surface (42), stress surface (42) and holding down face (46) parallel arrangement, and transmission piece (41) interlude is inside fluting (45) simultaneously, and holding down face (46) have been seted up to the right downside of transmission piece (41), and holding down face (46) and stress surface (42) contact setting.

10. An adjustable microcatheter for cerebrovascular intervention is used through a method of using the adjustable microcatheter for cerebrovascular intervention.