CN220002504U - Intracranial thrombus aspiration catheter - Google Patents

Abstract

The utility model relates to the technical field of medical appliances, and particularly discloses an intracranial thrombus suction catheter, which comprises a main catheter, wherein the main catheter I is connected with an auxiliary catheter, the auxiliary catheter comprises an elbow, a thrombus removing structure is arranged in the main catheter, the thrombus removing structure comprises an annular shell, one side of the annular shell is fixedly connected with the auxiliary catheter shell, and the interior of the annular shell is in sliding connection with the main catheter; the annular shell is internally and fixedly connected with a fixed shell, the fixed shell is internally connected with an inner guide pipe, one end of the inner guide pipe is fixedly provided with a suction structure, the suction structure comprises an elastic suction shell, and the fixed shell expands and contracts along with the reciprocating movement of the elastic suction shell; the utility model ensures that thrombus extraction and fixed guide are synchronously carried out, improves thrombus extraction efficiency and reduces stroke risk of patients.

Description

Intracranial thrombus aspiration catheter

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an intracranial thrombus aspiration catheter.

Background

Modern medical development has been limited in treatment of some chronic diseases, especially chronic cardiovascular and cerebrovascular diseases, and has become a main disease with high morbidity and high disability rate in modern people, and most patients relieve symptoms by taking medicines, but for some patients, cerebral apoplexy is a common type of cardiovascular and cerebrovascular diseases, usually intracranial thrombosis blocks or obstructs the normal circulation of cerebral blood vessels, and the incidence rate of the apoplexy can be reduced to a certain extent by sucking the intracranial thrombosis.

Existing aspiration embolectomy approaches include direct aspiration (ADAPT) and Stenting (SR) techniques, both of which have proven to be very effective treatments, and aspiration devices fall into two categories: one is manual, the other is mechanical, but usually in actual operation through the manual extraction method is more flexible than the mechanical method, but the suction is mostly suitable for the suction of blood vessel thrombus of other parts of the body in the existing operation technology, for the fragile and important human organs in the cranium, the suction and thrombus taking mode has the safety problem, and the misoperation can seriously influence the life health of patients; at present, a new technique for removing thrombus from the body by using a suction method is started in many hospitals for removing thrombus just established.

At present, most of domestic hospitals use manual operation when rescuing acute myocardial infarction, and the method is simple, convenient, quick and easy to control; if the operation is directly performed, since the intracranial thrombus has a certain directivity different from that of the thrombus in a common blood vessel, and the length of the thrombus cannot be judged, the common manual operation can lead to the rupture of the blood vessel, and finally the life of a patient is threatened; the common suction catheter is provided with only one main channel, and after the suction catheter is pushed to a lesion part under the guidance of a guide wire, the guide wire is required to be withdrawn in order to avoid influencing suction; after the thrombus taking support pulls the pushing catheter to the lesion part, suction pressure and thrombus suction are affected due to the fact that the guide wire is placed in the inner cavity; in the existing extraction process through two pipelines, the position of the matched catheter is fixed, so that the adjustment cannot be performed in the thrombus extraction process, and the use of the guide wire and the traction support is affected.

Disclosure of Invention

The utility model aims to provide an intracranial thrombus aspiration catheter, which solves the following technical problems:

how to guarantee to realize that thrombus extraction and fixed guide are carried out synchronously and simultaneously improve extraction efficiency, improve thrombus extraction efficiency and reduce the morbidity risk of patients.

The aim of the utility model can be achieved by the following technical scheme:

an intracranial thrombus suction catheter comprises a main catheter body, wherein the first main catheter body is connected with an auxiliary catheter body, the auxiliary catheter body comprises an elbow, a thrombus cleaning structure is arranged inside the main catheter body, the thrombus cleaning structure comprises an annular shell, one side of the annular shell is fixedly connected with the auxiliary catheter body, and the inside of the annular shell is in sliding connection with the main catheter body;

the annular shell is internally and fixedly connected with a fixing shell, the fixing shell is internally connected with an inner guide pipe, one end of the inner guide pipe is fixedly provided with a suction structure, the suction structure comprises an elastic suction shell, and the fixing shell expands and contracts along with the reciprocating movement of the elastic suction shell.

Preferably, the inner conduit comprises a first inner conduit and a second inner conduit, a first fixing ring is connected to the outer side of the first inner conduit, a second fixing ring is connected to the outer side of the second inner conduit, and the outer sides of the first fixing ring and the second fixing ring are in contact with the inner side of the fixing shell.

Preferably, a connecting frame is arranged between the first inner catheter and the second inner catheter, the connecting frame is rotationally connected with a connecting shaft, and one end of the connecting frame away from the connecting shaft is in sliding connection with the first inner catheter.

Preferably, the elastic suction shell is rotationally connected with a suction outer support, the inner side of the elastic suction shell is rotationally connected with a suction inner support, one end of the suction inner support is connected with the outer side of the second inner catheter, the other end of the suction inner support is fixedly connected with a convex ring, the convex ring is fixed on the inner side of the elastic suction shell, and one end, far away from the convex ring, of the suction inner support is rotationally connected with a convex block.

Preferably, one end of the suction outer support is movably connected with the second inner catheter, and one end of the suction outer support is contacted with the second fixing ring.

Preferably, the annular shell is internally provided with shell bulges which are circumferentially distributed by taking the section of the annular shell as the center of a circle.

The utility model has the beneficial effects that:

(1) The main body catheter, the auxiliary catheter and the thrombus removing structure are arranged to treat thrombus of a patient, so that safe extraction of intracranial thrombus is ensured; the main body catheter is connected with the auxiliary catheter and the two catheters are independently arranged, when the main body catheter is pushed into the cranium, a micro-guide wire and a micro-guide wire are needed or the main body catheter is guided by a thrombus taking stent, the main body catheter can be sent through the lumen of the auxiliary catheter, the thrombus can be directly taken in and sucked without withdrawing the guide wire when reaching a lesion, and thrombus pulled back by the stent can be better sucked outside the body when being assisted by the stent; through set up thrombus and clear away the structure in cylinder pipe is inside, guarantee through setting up annular shell and adjust annular shell for the inside position of clearing away thrombus structure through auxiliary catheter, guarantee to carry out more accurate processing and the location to thrombus position, be convenient for operation observation pathological change position and fix a position the pathological change position.

(2) According to the utility model, the fixed shell is arranged in the annular shell, the inner guide pipe is connected in the fixed shell, and the suction structure is arranged in the inner guide pipe, so that the annular shell moves to drive the fixed shell to move and the suction structure to change, and the annular shell moves to drive the auxiliary guide pipe to synchronously move; the elastic suction shell is ensured to be opened and contracted along with the reciprocating movement of the fixed shell by arranging the elastic suction shell, so that the size of the suction port is adjusted according to the thrombus condition, and the suction efficiency is improved.

(3) According to the utility model, the first inner catheter and the second inner catheter are arranged, the outer side of the first inner catheter is connected with the first fixing ring, the outer side of the second inner catheter is connected with the second fixing ring, the sealing performance of the internal suction environment is ensured through the first fixing ring and the second fixing ring, and meanwhile, the first fixing ring and the second fixing ring are contacted with the inner side of the fixing shell in a matched manner to ensure the supporting effect on the fixing shell; through setting up the suction outer support, guarantee to pull the elasticity suction shell outside, through setting up the suction inner support in the inside of elasticity suction shell, guarantee to support the inside of elasticity suction shell, be connected in the pipe outside in through suction inner support one end and the second, suction inner support other end fixed connection bulge loop, it is inboard at the elasticity suction shell to fix through the bulge loop, the suction inner support is kept away from the one end rotation of bulge loop and is connected with the lug, outwards rotate in lug department through the suction inner support, the fixed bulge loop in suction inner support bottom struts the elasticity suction shell.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of an intracranial thrombus aspiration catheter of the present utility model;

FIG. 2 is a schematic view of the thrombus clearing structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of an intracranial thrombus aspiration catheter according to the present utility model;

FIG. 4 is an enlarged view of a portion of the structure A of the thrombus removal structure of the present utility model;

FIG. 5 is an enlarged sectional view showing the internal structure of the thrombus removal structure B of the present utility model.

Reference numerals: 1. a main body catheter; 2. an auxiliary conduit; 21. bending the pipe; 3. a thrombus removal structure; 31. an annular housing; 311. a housing protrusion; 32. a fixed case; 33. a first fixing ring; 34. a second fixing ring; 35. an inner catheter; 351. a first inner conduit; 352. a second inner conduit; 36. a connecting frame; 37. a suction structure; 371. an elastic suction housing; 372. a suction outer stent; 373. sucking the inner support; 374. a bump; 375. a convex ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, an intracranial thrombus aspiration catheter according to an embodiment of the present utility model specifically includes a main catheter 1, an auxiliary catheter 2 connected to the main catheter 1, the auxiliary catheter 2 including an elbow 21, a thrombus removing structure 3 disposed inside the main catheter 1, the thrombus removing structure 3 including an annular housing 31, one side of the annular housing 31 being fixedly connected to the housing of the auxiliary catheter 2, the interior of the annular housing 31 being slidably connected to the main catheter 1; the common suction catheter is provided with only one main channel, and after the suction catheter is pushed to a lesion part under the guidance of a guide wire, the guide wire is required to be withdrawn in order to avoid influencing suction; after the thrombus taking support pulls the pushing catheter to the lesion part, suction pressure and thrombus suction are affected due to the fact that the inner cavity is reserved by the guide wire, and the existing thrombus taking process cannot be adjusted in the thrombus taking process due to the fact that the position of the matched catheter is fixed in the existing thrombus taking process, the guide wire is affected, and the pulling support is used.

In the embodiment, the main body catheter 1, the auxiliary catheter 2 and the thrombus removing structure 3 are arranged to treat thrombus of a patient, so that safe extraction of intracranial thrombus is ensured; specifically, the main body catheter 1 is connected with the auxiliary catheter 2, and the two catheters are independently arranged, when the main body catheter 1 is pushed into the cranium, a micro-guide wire and a micro-guide tube are needed or a thrombus taking stent is fed for guiding, the thrombus can be fed through the lumen of the auxiliary catheter 2, the thrombus can be directly sucked for repair without withdrawing the guide wire when reaching a lesion, and the thrombus pulled back by the stent can be better sucked outside the body when being assisted by the stent; through set up thrombus and clear away structure 3 in cylinder pipe is inside, guarantee through setting up annular shell 31 to adjust annular shell 31 for the inside position of clearing away thrombus structure through auxiliary catheter 2, guarantee to carry out more accurate processing and the location to the thrombus position, the pathological change position of being convenient for operation observation and to the pathological change position location.

Referring to fig. 3 to 5, a fixed housing 32 is fixedly connected to the inside of the annular housing 31, an inner conduit 35 is connected to the inside of the fixed housing 32, a suction structure 37 is fixed to one end of the inner conduit 35, the suction structure 37 includes an elastic suction housing 371, and the fixed housing 32 expands and contracts with the reciprocating movement of the elastic suction housing 371; by arranging the fixed shell 32 inside the annular shell 31, connecting the inner conduit 35 in the fixed shell 32, and arranging the suction structure 37 in the inner conduit 35, the annular shell 31 moves to drive the auxiliary conduit 2 to synchronously move by moving the fixed shell 32 through the annular shell 31 to drive the movement and change of the suction structure 37; the elastic suction housing 371 is provided to ensure that the elastic suction housing 371 expands and contracts with the reciprocating movement of the fixed housing 32, thereby adjusting the size of the suction port according to thrombus conditions and improving suction efficiency.

As an embodiment of the present utility model, referring to fig. 3 and 5 of the drawings, specifically, the inner conduit 35 includes a first inner conduit 351 and a second inner conduit 352, the first inner conduit 351 is connected with a first fixing ring 33 at the outer side thereof, the second inner conduit 352 is connected with a second fixing ring 34 at the outer side thereof, and the outer sides of the first fixing ring 33 and the second fixing ring 34 are in contact with the inner side of the fixing shell 32; by arranging the first inner conduit 351 and the second inner conduit 352, the first inner conduit 351 is connected with the first fixing ring 33 on the outer side, the second fixing ring 34 is connected with the outer side of the second inner conduit 352, the sealing performance of the internal suction environment is ensured through the first fixing ring 33 and the second fixing ring 34, and meanwhile, the first fixing ring 33 and the second fixing ring 34 are contacted with the inner side of the fixing shell 32 to ensure the supporting effect on the fixing shell 32.

As an embodiment of the present utility model, referring to fig. 5 of the drawings, specifically, a connecting frame 36 is disposed between a first inner conduit 351 and a second inner conduit 352, the connecting frame 36 is rotatably connected with a connecting shaft, and one end of the connecting frame 36 away from the connecting shaft is slidably connected with the first inner conduit 351; through setting up link 36 to set up between first inner conduit 351 and second inner conduit 352, through link 36 rotation to the thrombus suction, through setting up the connecting axle, drive the connecting axle rotation under the drive power effect, improve suction pressure, guarantee that the thrombus is more easy to suck out, improve suction speed.

As an embodiment of the present utility model, as shown in fig. 3 and 5 of the drawings, specifically, the outer side of the elastic suction shell 371 is rotatably connected with a suction outer support 372, the inner side of the elastic suction shell 371 is rotatably connected with a suction inner support 373, one end of the suction inner support 373 is connected with the outer side of the second inner catheter 352, the other end of the suction inner support 373 is fixedly connected with a convex ring 375, the convex ring 375 is fixed on the inner side of the elastic suction shell 371, and one end of the suction inner support 373 far away from the convex ring 375 is rotatably connected with a convex block 374; through setting up suction outer support 372, guarantee to pull the elasticity suction shell 371 outside, through set up suction inner support 373 in elasticity suction shell 371 inside, guarantee to support elasticity suction shell 371 inside, be connected with the second inner catheter 352 outside through suction inner support 373 one end, suction inner support 373 other end fixed connection bulge loop 375, it is inboard at elasticity suction shell 371 to fix through bulge loop 375, suction inner support 373 is kept away from the one end rotation of bulge loop 375 and is connected with lug 374, through suction inner support 373 outwards rotate in lug 374 department, the fixed bulge loop 375 of suction inner support 373 bottom struts elasticity suction shell 371.

As an embodiment of the present utility model, referring to fig. 2 and 4 of the drawings, specifically, one end of the outer suction bracket 372 is movably connected to the second inner catheter 352, and one end of the outer suction bracket 372 contacts the second fixing ring 34; by the movable contact of the head end of the outer suction frame 372 with the second inner catheter 352, one end of the outer suction frame 372 contacts the second fixing ring 34, and when the second fixing ring 34 moves, the outer suction frame 372 is contracted and expanded, so that the elastic suction housing 371 is contracted and expanded.

As an embodiment of the present utility model, referring to fig. 4 of the drawings, specifically, a casing protrusion 311 is disposed inside an annular casing 31, and the casing protrusion 311 is circumferentially distributed with a section of the annular casing 31 as a center; by arranging the housing protrusion 311 inside the annular housing 31, it is ensured that thrombus not sucked inside the blood is filtered through the housing protrusion 311, thereby improving the thrombus treatment effect.

The working principle of the utility model is as follows: the main body catheter 1, the auxiliary catheter 2 and the thrombus removing structure 3 are arranged to treat thrombus of a patient, so that safe extraction of intracranial thrombus is ensured; specifically, the main body catheter 1 is connected with the auxiliary catheter 2, and the two catheters are independently arranged, when the main body catheter 1 is pushed into the cranium, a micro-guide wire and a micro-guide tube are needed or a thrombus taking stent is fed for guiding, the thrombus can be fed through the lumen of the auxiliary catheter 2, the thrombus can be directly sucked for repair without withdrawing the guide wire when reaching a lesion, and the thrombus pulled back by the stent can be better sucked outside the body when being assisted by the stent; through setting up thrombus and clear away the structure 3 in the column pipe inside, through setting up annular shell 31 guarantee through auxiliary conduit 2 adjust annular shell 31 relative to the inside position of clearing away thrombus structure, guarantee to carry out more accurate processing and location to thrombus position, be convenient for operation observation pathological change position and to the pathological change position location; by arranging the fixed shell 32 inside the annular shell 31, connecting the inner conduit 35 in the fixed shell 32, and arranging the suction structure 37 in the inner conduit 35, the annular shell 31 moves to drive the auxiliary conduit 2 to synchronously move by moving the fixed shell 32 through the annular shell 31 to drive the movement and change of the suction structure 37; the elastic suction shell 371 is arranged to ensure that the elastic suction shell 371 expands and contracts along with the reciprocating movement of the fixed shell 32, so that the size of the suction port is adjusted according to thrombus conditions, and the suction efficiency is improved; the first inner conduit 351 and the second inner conduit 352 are arranged, the first fixing ring 33 is connected to the outer side of the first inner conduit 351, the second fixing ring 34 is connected to the outer side of the second inner conduit 352, the sealing performance of the internal suction environment is guaranteed through the first fixing ring 33 and the second fixing ring 34, and meanwhile, the supporting effect of the fixing shell 32 is guaranteed through the contact between the first fixing ring 33 and the second fixing ring 34 and the inner side of the fixing shell 32; through setting up suction outer support 372, guarantee to pull the elasticity suction shell 371 outside, through set up suction inner support 373 in elasticity suction shell 371 inside, guarantee to support elasticity suction shell 371 inside, be connected with the second inner catheter 352 outside through suction inner support 373 one end, suction inner support 373 other end fixed connection bulge loop 375, it is inboard at elasticity suction shell 371 to fix through bulge loop 375, suction inner support 373 is kept away from the one end rotation of bulge loop 375 and is connected with lug 374, through suction inner support 373 outwards rotate in lug 374 department, the fixed bulge loop 375 of suction inner support 373 bottom struts elasticity suction shell 371.

The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims (6)

1. An intracranial thrombus suction catheter is characterized by comprising a main catheter (1), wherein an auxiliary catheter (2) is connected to the main catheter (1), the auxiliary catheter (2) comprises an elbow pipe (21), a thrombus removing structure (3) is arranged inside the main catheter (1), the thrombus removing structure (3) comprises an annular shell (31), one side of the annular shell (31) is fixedly connected with the shell of the auxiliary catheter (2), and the inside of the annular shell (31) is in sliding connection with the main catheter (1);

the inside fixed shell (32) that still fixedly connected with of annular shell (31), fixed shell (32) internally connected with inner conduit (35), inner conduit (35) one end is fixed with suction structure (37), suction structure (37) include elasticity suction shell (371), fixed shell (32) expand and shrink along with the reciprocating motion of elasticity suction shell (371).

2. An intracranial thrombus aspiration catheter as claimed in claim 1, wherein the inner catheter (35) comprises a first inner catheter (351) and a second inner catheter (352), the first inner catheter (351) is externally connected with a first retaining ring (33), the second inner catheter (352) is externally connected with a second retaining ring (34), and the first retaining ring (33) and the second retaining ring (34) are externally contacted with the inner side of the retaining shell (32).

3. An intracranial thrombus aspiration catheter as claimed in claim 2, wherein a connecting frame (36) is provided between the first and second inner catheters (351, 352), the connecting frame (36) is rotatably connected to a connecting shaft, and an end of the connecting frame (36) remote from the connecting shaft is slidably connected to the first inner catheter (351).

4. An intracranial thrombus aspiration catheter according to claim 1, wherein the outer side of the elastic aspiration housing (371) is rotatably connected with an outer aspiration support (372), the inner side of the elastic aspiration housing (371) is rotatably connected with an inner aspiration support (373), one end of the inner aspiration support (373) is connected with the outer side of the second inner catheter (352), the other end of the inner aspiration support (373) is fixedly connected with a collar (375), the collar (375) is fixed on the inner side of the elastic aspiration housing (371), and one end of the inner aspiration support (373) far away from the collar (375) is rotatably connected with a bump (374).

5. An intracranial thrombus aspiration catheter as in claim 4, wherein the aspiration outer support (372) is movably connected at one end to the second inner catheter (352) and the aspiration outer support (372) is in contact at one end with the second retaining ring (34).

6. An intracranial thrombus aspiration catheter according to claim 1, wherein the annular housing (31) is internally provided with housing projections (311), the housing projections (311) being circumferentially distributed about the cross section of the annular housing (31).