CN111317543B - Multi-functional strutting clearing device of neural intervention - Google Patents

Abstract

The invention relates to a multifunctional support and removal device for nerve intervention. The end of a catheter is provided with a communication port, the communication port is communicated with the inner cavity of the catheter, an inner thread layer is arranged on the inner wall of the communication port, and the inner thread layer is connected with the outer thread pipe thread. Connection, the outer end of the externally threaded pipe is connected with the rotating support pipe, the inner end of the externally threaded pipe is connected with the sleeve, a low-pressure adsorption pipe is connected to the outside of the rotating support pipe, and a solenoid valve is installed on the low-pressure adsorption pipe. The inner end of the tube is connected with the excavation device; the two fixing tubes are dislocated and displaced by spiral movement, and the tumor or embolism position is clamped between the two fixing tubes, so as to realize the accurate positioning of the lesion position, which is beneficial to Operation behind the construction work.

Description

A kind of nerve intervention multifunctional support and clearing device

technical field

The invention relates to the field of medicine, in particular to a multifunctional support and removal device for nerve intervention.

Background technique

Interventional technology, internal medicine technology and surgical technology are collectively known as the three major medical technologies; compared with the latter two, it is a young technology that is independent of medical and surgical technologies, and coexists with them and develops collaboratively. Interventional techniques are divided into three categories: cardiac intervention, peripheral intervention and neurointervention according to the different professional fields involved. Neurointerventional techniques, as the name suggests, are used to treat neurological diseases. Under the support of digital subtraction angiography DSA system, it adopts intravascular catheter operation technology, through selective angiography, embolization, dilatation, mechanical removal, drug delivery and other specific methods to diagnose lesions involving the human neurovascular system. and treatment. It is an emerging minimally invasive clinical technology that opens up new ideas and therapeutic approaches for many cerebral and spinal vascular diseases. It can not only solve many cerebrovascular diseases independently, but also can be skillfully combined with traditional open surgery and radiation therapy, so that the previously intractable or difficult diseases can be treated with satisfactory results. With the deepening of understanding of many diseases and the renewal of concepts, neurointerventional technology has become more and more important in the treatment of cerebrovascular diseases. It has become a popular subject, and has been rapidly developed and popularized.

At present, aneurysm embolization requires the use of a catheter to reach the location of the aneurysm in the intracranial blood vessels for embolization and removal of the aneurysm. The existing neurointerventional microcatheter has the following defects: first, the catheter location is inaccurate, reaching the position of the aneurysm. After the embolization position, the fixing operation adopted is single-line fixing, and the removal position is roughly found. In actual operation, the position of the removal section cannot be precisely controlled, and the operator needs to rely on human judgment. The efficiency of the step method is low, and the closed removal operation cannot be realized for the removal position, which leads to the overflow of the plug block and causes unnecessary trouble; thirdly, the traditional removal and decoration structure is complicated, and the mechanical transmission method is realized in the tiny pipe diameter, and the cost It is relatively high and has a single structure, which makes it extremely inconvenient to achieve precise mechanical control in a traditional way, which affects the removal effect.

Therefore, the production of a kind of simple structure, convenient operation, high work and operation efficiency, accurate positioning, diverse functions, closed operation operation, adopting the method of paragraph interval clearing, complete clearing without residue, simple operation method, accurate overall control, and safety factor High-level neuro-interventional multi-functional support and removal device has broad market prospects.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the present invention provides a simple structure, convenient operation, high work and running efficiency, accurate positioning, diverse functions, closed operation operation, adopting a paragraph interval clearing method, complete clearing without residue, and simple operation implementation. , the overall control is accurate and the safety factor is high, the multifunctional support and removal device for nerve intervention is used to overcome the defects in the prior art.

The technical scheme of the present invention is achieved as follows: a multifunctional support and removal device for nerve intervention, comprising a catheter, a first fixation tube installed at one end of the catheter, a catheter end installed at the other end of the catheter, and the catheter end A communication port is arranged in the head, the communication port is communicated with the inner cavity of the catheter, an inner thread layer is arranged on the inner wall of the communication port, the inner thread layer is threadedly connected with the outer thread pipe, the outer end of the outer thread pipe is connected with the rotating bracket pipe, and the outer thread is connected with the rotating support pipe. The inner end of the threaded pipe is connected with the casing, the outer side of the rotating support pipe is connected with a low-pressure adsorption pipe, a solenoid valve is installed on the low-pressure adsorption pipe, and the inner end of the casing is connected with the excavation device.

The excavation device includes an end pipe which is connected with the inner end of the casing as an integral structure, and a second fixing pipe is installed on the end of the end pipe by means of threaded connection, and the outer end of the second fixing pipe is fixedly installed. Plug, at least two low-pressure airbags are sleeved on the outer wall of the end tube between the second fixing tube and the sleeve, and scoops are evenly distributed in the circumferential direction of the end tube between the two adjacent low-pressure airbags. The bottom of each scoop is provided with a leakage hole that communicates with the inside of the end pipe, the inside of each low-pressure air bag is connected with the inflatable pipe through the inflatable hole opened on the end pipe, and one end of the inflatable pipe is set at the end of the pipe. In the inner cavity of the head tube, the other end of the inflation pipe is arranged outside the rotating support tube.

The conduit is a cylindrical hollow tubular structure, the inner end of the first fixation tube is fixedly connected to one end of the conduit as an integral structure, the inner wall of the first fixation tube is communicated with the inner wall of the conduit, and the outer wall of the first fixation tube is connected. The diameter is equal to the outer diameter of the catheter, the end of the catheter is a cylindrical tubular structure, the outer diameter of the catheter end is not less than the outer diameter of the catheter, the inner diameter of the communication port matches the inner diameter of the catheter, and the external threaded pipe is a cylindrical tubular structure. The rotating support tube is a cylindrical tubular structure, the outer diameter of the rotating support tube is not less than the outer diameter of the external thread tube, and the outer diameter of the rotating support tube is not greater than the outer diameter of the catheter end, and the sleeve and the low-pressure adsorption tube are both cylindrical It has a tubular structure, the inner diameter of the casing and the low pressure adsorption tube are equal, the outer diameter of the casing is not greater than the outer diameter of the external thread pipe, and the outer diameter of the external thread pipe is equal to the outer diameter of the low pressure adsorption tube.

The outer diameter of the sleeve is not larger than the inner diameter of the catheter, the length of the sleeve is not larger than the length of the catheter, and the length of the external threaded pipe is equal to the length of the end of the catheter.

The sum of the lengths of the end pipe and the casing is equal to the length of the conduit, the end pipe is a cylindrical tubular structure, the outer diameter of the end pipe is not greater than the outer diameter of the casing, and the outer end of the scoop reaches the end pipe. The length of the vertical line at the axis position is equal to the length of the vertical line from the outer wall of the casing to the axis position of the casing, the outer diameter of the second fixing tube is equal to the outer diameter of the conduit, the plug is a hemispherical structure, and the inner side of the second fixing tube is blocked. The head pipe connection threaded pipe is threadedly connected with the end pipe.

The said low-pressure airbag is pasted on the outer wall of the end pipe by the adhesive connection and fastening layer, and the adhesive connection and fastening layer is integrated with the low-pressure airbag. The low-pressure airbag is a ring-shaped airbag structure. Equal to the outer diameter of the catheter.

The scoop has a spoon body structure, the bottom of the scoop is integrated with the outer wall of the end pipe, the leakage hole is opened on the end pipe on the side where the scoop and the end pipe are connected, and the outside of the leakage hole is It is communicated with the root of the scoop, and the inner side of the leakage hole communicates with the official cavity of the end pipe.

The number of said scoops distributed on the cut surface of the same end tube is six, and the six scoops are evenly distributed in the circumferential direction of the end tube outside the cut surface. The length of the vertical line from the outer end to the axis position of the end pipe is not greater than the length of the vertical line from the outer wall of the duct to the axis position of the duct, the number of leakage holes is consistent with the number of scoops, and the setting of each leakage hole and scoop The locations are all the same.

The inflatable hole is opened on the end tube inside the low-pressure airbag, one side of the inflatable hole is communicated with the low-pressure airbag, and the other side of the inflation hole is communicated with the inner cavity of the end tube.

The top part of the scoop is provided with a scooping blade head, and the end of the scooping blade head faces the center part of the scoop.

The invention has the following positive effects: the product is easy to operate, has high work and running efficiency, and overcomes the defect of inaccurate positioning of the traditional conduit. The patent adopts two fixing tubes, which are realized by two fixing tubes that can move relative positions. In order to locate the tumor position, the two fixing tubes are dislocated and displaced by spiral movement, and the tumor or embolism position is clamped between the two fixing tubes, so as to realize the accurate positioning of the lesion position, which is beneficial to the subsequent operation and construction. Secondly, this patent adopts the method of helical displacement, using the relative position movement of the double-layer casing structure, to distribute the two balloons at both ends of the tumor position, so that a relatively independent work is formed between the balloon and the inner wall of the blood vessel. and use the scoops distributed between the two airbags to remove the lesions. This operation uses screw propulsion and rotation. During the rotation, the digging blade is used to dig out the diseased tissue. The natural curvature of the scoop pushes the excavated tissue into the end tube through the leakage hole, and after opening the external solenoid valve, the excess tissue is extracted by low pressure. During the entire removal period, the blood vessels between the two balloons The paragraph is an independent working area, which ensures the thoroughness of cleaning, and the number of airbags is multiple. The length between the two airbags can be realized according to the principle of bolt advancement according to the lesion position, and the corresponding external low-pressure inflation method can be used to open the corresponding airbags. The low-pressure air bag can realize that the length between the two low-pressure air bags is not less than the length of the lesion location, which is conducive to the independent isolation of the lesion location and reduces unnecessary troubles; again, this product adopts the air bag structure embedded outside the casing, In addition, the outer diameter of the balloon is strictly controlled, and the low-pressure air supply method will not cause damage to the vessel wall. The outer diameter of the longitudinal outer ring surface of the scoop will not exceed the outer diameter of the outer wall of the catheter, and the outer diameter of the outer wall of the catheter is equal to the maximum diameter of the plug, which ensures that the digging operation is performed on the blood vessels. The continuous protection of the pipe wall has carried out efficient removal operations on the premise of ensuring safety. The complex design of the traditional internal mechanical structure has been abandoned, and the risk factor of the equipment has been reduced. Implementation, high stability factor, high safety factor.

Description of drawings

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

FIG. 2 is a schematic three-dimensional structure diagram of a catheter tip of the present invention.

FIG. 3 is a schematic diagram of the three-dimensional structure of the rotating stent tube of the present invention.

FIG. 4 is a schematic diagram of the extension structure of the casing according to the present invention.

FIG. 5 is a schematic diagram of the internal structure of FIG. 4 of the present invention.

FIG. 6 is a schematic view of the cross-sectional structure of FIG. 4 along A-A of the present invention.

FIG. 7 is a schematic diagram of the structure of the plug of the present invention.

Detailed ways

As shown in Figures 1, 2, 3, 4, 5, 6, and 7, a multifunctional nerve intervention support and removal device includes a catheter 1, a first fixation tube 5 installed at one end of the catheter 1, and a first fixation tube 5 installed on the catheter 1. The other end of the catheter end 2, the catheter end 2 is provided with a communication port 13, the communication port 13 is communicated with the inner cavity of the catheter 1, and an inner thread layer 14 is arranged on the inner wall of the communication port 13, and the inner thread layer 14 and the inner thread layer 14. The externally threaded pipe 7 is threadedly connected, and the entire part of the externally threaded pipe 7 can realize the threaded movement on the inner wall of the catheter end, so that the externally threaded pipe 7 can drive the sleeve 15 to rotate and move inside the catheter. The movement of the casing is realized, and the end tube 16 is further driven to drive the movement of the low-pressure air bag and the scoop, and the scoop is used to remove excess tissue by means of rotation. The positioning of the tube 5 and the second fixing tube 4 is realized. When the position of the sleeve end with the second fixing tube 4 and the catheter 1 with the first fixing tube 5 are displaced relative to each other, different low-pressure airbags can be opened according to the lesion position, The two low-pressure balloons that are guaranteed to be opened can isolate the lesion site in its entirety. The outer end of the externally threaded pipe 7 is connected with the rotating support pipe 6, the inner end of the externally threaded pipe 7 is connected with the sleeve 15, and a low-pressure adsorption pipe 8 is connected to the outside of the rotating support pipe 6, and a low-pressure adsorption pipe 8 is installed on the low-pressure adsorption pipe 8. The solenoid valve 9 and the inner end of the casing 15 are connected with the excavation device.

The excavation device includes an end pipe 16 which is connected with the inner end of the sleeve 15 as an integral structure, and the end of the end pipe 16 is installed with a second fixing pipe 4 by means of screw connection. A plug 3 is fixedly installed at the outer end, and at least two low-pressure airbags 17 are sleeved on the outer wall of the end tube 16 between the second fixing tube 4 and the sleeve 15. The end between the adjacent two low-pressure airbags 17 Digging scoops 18 are equally distributed in the circumferential direction of the head tube 16, the bottom of each scooping scoop 18 is provided with a leakage hole 19 that communicates with the inside of the end head tube 16, and the interior of each low-pressure air bag 17 is opened at the end of the head tube 17. The inflation hole 22 on the tube 16 communicates with the inflation pipe 10 . The excavation device is hidden inside the catheter 1, and after reaching the patient's position, the outer threaded pipe 7 and the catheter end 2 are threaded to push the casing 15 to drive the end pipe 16 to protrude from the catheter 1. There are two purposes of displacement. The first is to remove the hidden low-pressure airbag 17, and determine the opening of the corresponding airbag according to the length of the patient, and use the two correspondingly opened airbags to implement the entire section of the patient's position. Isolation, there are multiple airbags, which can be opened according to the length of the patient, to ensure that the lesion position is between the two airbags after opening. In the process of spiral advancement, the displacement position of the two fixing pipes is used to determine the length of the patient's position. , it is convenient and quick to use, and the positioning is extremely accurate. The second purpose is to use the catheter end 2 to provide a stable support body for the traveling of the externally threaded pipe 7 during the spiral rotation process, so as to ensure the stable displacement of the externally threaded pipe 7 .

The conduit 1 is a cylindrical hollow tubular structure, the inner end of the first fixing tube 5 is fixedly connected to one end of the conduit 1 as an integral structure, the inner wall of the first fixing tube 5 is communicated with the inner wall of the conduit 1, and the first fixing tube 5 is in communication with the inner wall of the conduit 1. The outer diameter of the fixing tube 5 is equal to the outer diameter of the conduit 1, the conduit end 2 is a cylindrical tubular structure, the outer diameter of the conduit end 2 is not less than the outer diameter of the conduit 1, and the inner diameter of the communication port 13 is the same as the conduit 1. Matching, the external thread pipe 7 is a cylindrical tubular structure, the rotating support pipe 6 is a cylindrical tubular structure, the outer diameter of the rotating support pipe 6 is not less than the outer diameter of the external thread pipe 7, and the outer diameter of the rotating support pipe 6 is not less than Larger than the outer diameter of the catheter end 2, the sleeve 15 and the low-pressure adsorption tube 8 are both cylindrical tubular structures, the inner diameter of the sleeve 15 and the low-pressure adsorption tube 8 are equal, and the outer diameter of the sleeve 15 is not larger than the outer diameter of the externally threaded pipe 7. The outer diameter of the externally threaded pipe 7 is equal to the outer diameter of the low-pressure adsorption pipe 8 . The outer diameter of the sleeve 15 is not larger than the inner diameter of the catheter 1 , the length of the sleeve 15 is not larger than the length of the catheter 1 , and the length of the externally threaded pipe 7 is equal to the length of the catheter end 2 . The sum of the lengths of the end pipe 16 and the sleeve 15 is equal to the length of the catheter 1, the end pipe 16 is a cylindrical tubular structure, and the outer diameter of the end pipe 16 is not greater than the outer diameter of the sleeve 15. 18 The length of the vertical line from the outer end to the axis position of the end tube 16 is equal to the length of the vertical line from the outer wall of the sleeve 15 to the axis position of the sleeve 15. The outer diameter of the second fixing tube 4 is equal to the outer diameter of the conduit 1, and the plug 3 It is a hemispherical structure, and the inner side of the second fixing tube 4 is threadedly connected to the end tube 16 through the plug tube connection threaded tube 20 .

The product specifies the diameter and length of each component. Specifically, in order to ensure the safety during the entire operation, the operation is performed between the inner wall of the blood vessel wall, and the operation is completed by using external fluoroscopy equipment and fixing equipment. The entire operation must be guaranteed. The safety of the operation process, that is, the setting of the pipe diameter must be reasonable and safe, the scoop of the product and the deployment of the low-pressure airbag must meet the fixed standards, and the operation can only be carried out in the place where the catheter can pass through.

The said low-pressure airbag 17 is pasted on the outer wall of the end pipe 16 by sticking and connecting the fastening layer 21, and the pasting and connecting-fastening layer 21 and the low-pressure airbag 17 are integral structure. The inflated outer diameter of the balloon 17 is equal to the outer diameter of the catheter 1 . The scoop 18 is a scoop body structure, the bottom of the scoop 18 is integrated with the outer wall of the end pipe 16, and the leakage hole 19 is opened on the end pipe 16 on the side where the scoop 18 and the end pipe 16 are connected. Above, the outer side of the leakage hole 19 is communicated with the root of the scoop 18 , and the inner side of the leakage hole 19 is communicated with the official cavity of the end pipe 16 . The number of the scoops 18 distributed on the section of the same end tube 16 is six, the six scoops 18 are evenly distributed in the circumferential direction of the end tube 16 outside the section, and the six scoops 18 are arranged in the same direction. , the length of the vertical line from the outer end of each scoop 18 to the axis position of the end pipe 16 is not greater than the length of the vertical line from the outer wall of the conduit 1 to the axis position of the conduit 1, and the number of leakage holes 19 is consistent with the number of scoops 18, And the setting positions of each leakage hole 19 and the scoop 18 are the same. The inflatable hole 22 is opened on the end tube 16 inside the low-pressure airbag 17 , one side of the inflatable hole 22 is communicated with the low-pressure airbag 17 , and the other side of the inflation hole 22 is communicated with the inner cavity of the end tube 16 . The top part of the scoop 18 is provided with a scooping blade 25 , and the end of the scooping blade 25 faces the center of the scoop 18 .

When this product is in use: use catheter technology to place catheter 1 inside the diseased blood vessel, and install the plug 3 in the initial state, and install it on the outer end of the end tube by connecting the plug pipe to the threaded pipe. In the initial state of the device, the end tube 16 and the sleeve 15 after the catheter 1 is connected to the plug are all inserted into the blood vessel. In the initial position, the externally threaded tube 7 is located outside the catheter end 2 and does not enter the communication port. This ensures that the end pipe 16 and the sleeve 15 can be removed from the catheter under the action of screw propulsion after the male threaded pipe 7 enters the catheter end 2, and the end pipe 16 is completely exposed to the outside to realize the excavation operation. When the catheter 1 and the plug 3 reach the patient's position, the first fixing tube 5 and the second fixing tube 4 realize the marking of the position. Under the observation of the external developing device, the length of the diseased position can be judged, and the externally threaded tube 7 is screwed into the catheter end 2. During the helical process, the length of the process that the rotating bracket tube drives the external threaded tube 7 to enter is the length of the end tube 16 leaking out of the catheter 1. While moving, the first fixing tube 5 The position of the second fixing tube 4 is staggered, and the length of the lesion location is determined by using the external developing device. When the length of the lesion location is determined, the position of the low-pressure air bag is also determined. All airbags are located in front of the fixing tube 5 and the second fixing tube 4, so the patient position can be set between the two correspondingly opened low-pressure airbags by using this length to ensure the opened two low-pressure airbags. The distance between the balloons should exceed the length of the patient's position, isolate the section between the patient's positions between the two low-pressure balloons, and then the first balloon is inflated, and the external threaded tube 7 is implemented in the catheter end 2 The cyclic operation of tightening and loosening. During the repeated operation, the scoop 18 and the scooping blade 25 perform digging and clearing operations on the patient's tissue, and the excess tissue enters the end tube through the leakage hole 19. 16. In the inner cavity, when one end of the time is completed, the solenoid valve is opened, and the external low-pressure negative pressure extraction device is used to extract the necrotic tissue to the outside, so as to realize the removal of the patient site.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications to equivalent changes. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still belong to the protection scope of the technical solutions of the present invention.

Claims (9)

1. The utility model provides a multi-functional clearing device that struts of neural intervention, includes pipe (1), installs first definite image pipe (5) at pipe (1) one end, installs pipe end (2) at the pipe (1) other end, its characterized in that: a communicating port (13) is arranged in the conduit end (2), the communicating port (13) is communicated with the inner cavity of the conduit (1), an internal thread layer (14) is arranged on the inner wall of the communicating port (13), the internal thread layer (14) is in threaded connection with an external thread pipe (7), the outer end of the external thread pipe (7) is connected with a rotating bracket pipe (6), the inner end of the external thread pipe (7) is connected with a sleeve (15), the outer side of the rotating bracket pipe (6) is connected with a low-pressure adsorption pipe (8), an electromagnetic valve (9) is arranged on the low-pressure adsorption pipe (8), and the inner end of the sleeve (15) is connected with a dredging device; the cleaning and digging device comprises a head pipe (16) which is connected with the inner end of a sleeve (15) into a whole, a second fixing pipe (4) is installed at the end part of the head pipe (16) in a threaded connection mode, a plug (3) is fixedly installed at the outer side end part of the second fixing pipe (4), at least two low-pressure air bags (17) are sleeved on the outer wall of the head pipe (16) between the second fixing pipe (4) and the sleeve (15), digging scoops (18) are evenly distributed in the circumferential direction of the head pipe (16) between every two adjacent low-pressure air bags (17), a material leakage hole (19) communicated with the inside of the head pipe (16) is formed in the bottom of each digging scoop (18), the inside of each low-pressure air bag (17) is communicated with an inflation pipeline (10) through an inflation hole (22) formed in the head pipe (16), one end of the inflation pipeline (10) is arranged in the inner cavity of the head pipe (16), and the other end of the inflation pipeline (10) is arranged outside the rotary support pipe (6).

2. The multifunctional supporting and clearing device for nerve intervention according to claim 1, wherein: the pipe (1) is a cylindrical hollow tubular structure, the inner end of the first fixing shadow pipe (5) is fixedly connected with one end of the pipe (1) to form an integral structure, the inner wall of the first fixing shadow pipe (5) is communicated with the inner wall of the pipe (1), the outer diameter of the first fixing shadow pipe (5) is equal to that of the pipe (1), the pipe end (2) is a cylindrical tubular structure, the outer diameter of the pipe end (2) is not smaller than that of the pipe (1), the inner diameter of the communication port (13) is matched with that of the pipe (1), the outer threaded pipe (7) is a cylindrical tubular structure, the rotating support pipe (6) is a cylindrical tubular structure, the outer diameter of the rotating support pipe (6) is not smaller than that of the outer threaded pipe (7), the outer diameter of the rotating support pipe (6) is not larger than that of the pipe end (2), the sleeve (15) and the low-pressure adsorption pipe (8) are both cylindrical tubular structures, the sleeve (15) is equal to that of the low-pressure pipe (8), the outer diameter of the sleeve (15) is not larger than that of the adsorption pipe (7), and the outer diameter of the adsorption pipe (8).

3. The multifunctional supporting and clearing device for nerve intervention according to claim 1 or 2, wherein: the outer diameter of the sleeve (15) is not more than the inner diameter of the catheter (1), the length of the sleeve (15) is not more than the length of the catheter (1), and the length of the external thread pipe (7) is equal to the length of the catheter tip (2).

4. The multifunctional neuro-intervention support clearing device according to claim 1, wherein: the length sum of the end pipe (16) and the sleeve (15) is equal to the length of the guide pipe (1), the end pipe (16) is of a cylindrical tubular structure, the outer diameter of the end pipe (16) is not larger than the outer diameter of the sleeve (15), the length of a perpendicular line from the outer end of the scoop (18) to the axis position of the end pipe (16) is equal to the length of a perpendicular line from the outer wall of the sleeve (15) to the axis position of the sleeve (15), the outer diameter of the second fixing pipe (4) is equal to the outer diameter of the guide pipe (1), the plug (3) is of a hemispherical structure, and the inner side of the second fixing pipe (4) is in threaded connection with the end pipe (16) through a plug pipe connecting threaded pipe (20).

5. The multifunctional neuro-intervention support clearing device according to claim 1, wherein: the low-pressure air bag (17) is adhered to the outer wall of the end pipe (16) through an adhering connection fastening layer (21), the adhering connection fastening layer (21) and the low-pressure air bag (17) are of an integral structure, the low-pressure air bag (17) is of an annular bag body structure, and the outer diameter of the inflated low-pressure air bag (17) is equal to that of the catheter (1).

6. The multifunctional supporting and clearing device for nerve intervention according to claim 1, wherein: the material-leaking type excavator is characterized in that the excavator spoon (18) is of a spoon body structure, the bottom of the excavator spoon (18) and the outer wall of the end head pipe (16) are of an integral structure, the material-leaking hole (19) is formed in the end head pipe (16) on one side of the connecting position of the excavator spoon (18) and the end head pipe (16), the outer side of the material-leaking hole (19) is communicated with the root of the excavator spoon (18), and the inner side of the material-leaking hole (19) is communicated with an official cavity of the end head pipe (16).

7. The multifunctional supporting and clearing device for nerve intervention according to claim 1, 4 or 6, wherein: the quantity that the spoon (18) distribute on same end pipe (16) tangent plane be six, six spoon (18) equal distribution are on end pipe (16) circumferencial direction in this tangent plane outside, six arrange orientation of spoon (18) are unanimous, perpendicular length that every spoon (18) outer end to end pipe (16) axis position is all no longer than the length of pipe (1) outer wall to pipe (1) axis position perpendicular, the quantity of small opening (19) is unanimous with the quantity of spoon (18), and every small opening (19) is the same with the equal position that sets up of spoon (18).

8. The multifunctional supporting and clearing device for nerve intervention according to claim 1, wherein: the inflation hole (22) is arranged on the end head pipe (16) at the inner side of the low-pressure air bag (17), one side of the inflation hole (22) is communicated with the low-pressure air bag (17), and the other side of the inflation hole (22) is communicated with the inner cavity of the end head pipe (16).

9. The multifunctional neuro-intervention timbering removal device of claim 7, wherein: the top end part of the digging spoon (18) is provided with a digging blade head (25), and the end part of the digging blade head (25) faces to the spoon core part of the digging spoon (18).

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