CN117958904A - Thrombus suction device - Google Patents
Thrombus suction device Download PDFInfo
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- CN117958904A CN117958904A CN202410149468.0A CN202410149468A CN117958904A CN 117958904 A CN117958904 A CN 117958904A CN 202410149468 A CN202410149468 A CN 202410149468A CN 117958904 A CN117958904 A CN 117958904A
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- catheter
- thrombus
- aspiration
- support
- suction
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 104
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 10
- 210000004204 blood vessel Anatomy 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003073 embolic effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000013151 thrombectomy Methods 0.000 description 2
- 208000036828 Device occlusion Diseases 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000002537 thrombolytic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22072—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an instrument channel, e.g. for replacing one instrument by the other
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
- A61B2017/320024—Morcellators, e.g. having a hollow cutting tube with an annular cutter for morcellating and removing tissue
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a thrombus suction device, which belongs to the technical field of thrombus treatment devices; comprises a support catheter, an aspiration catheter and a cutting component, wherein the support catheter is used for establishing a passage between the aspiration catheter and thrombus; the distal end of the suction catheter extends to a thrombus position through the support catheter, and the proximal end is connected with external suction equipment; the cutting component is arranged at the far end of the supporting catheter and can seal the far end of the supporting catheter, when the suction catheter sucks thrombus, the suction catheter pulls the thrombus to the supporting catheter after the suction catheter struts the cutting component at the far end of the supporting catheter, and when the suction catheter withdraws, the cutting component seals the far end of the supporting catheter and simultaneously completes cutting the thrombus entering the supporting catheter; so as to solve the technical problem that the existing suction device is difficult to treat thrombus with relatively large volume.
Description
Technical Field
The invention belongs to the technical field of thrombus treatment devices, and particularly relates to a thrombus suction device.
Background
Clinical studies have shown that thrombectomy is a very effective method of treating acute stroke.
The thrombolytic approach of thrombectomy mainly includes direct aspiration (adaptive) and Stenting (SR) techniques, both of which have proven to be very effective treatments. However, more researches show that the ADAPT technology has better effect than the SR technology, can achieve the purpose of recanalizing blood vessels more quickly, and has short surgical recanalization time and low cost.
The current suction technology adopts a strategy that a suction catheter is conveyed to a part which is blocked by thrombus in a blood vessel for direct thrombus suction, and thrombus with smaller volume can be directly sucked out, but for thrombus with larger volume, the diameter of the suction catheter is smaller, so that the thrombus with larger volume is not easy to contain. There are two conventional methods for treating the problem, one is to set a thrombus dividing component at the distal end of the aspiration catheter to divide the thrombus before aspiration, but this method of directly dividing the thrombus in the blood vessel inevitably results in that the divided fine thrombus is not washed away by the blood circulated after aspiration, resulting in embolic escape. The other treatment mode is to directly increase the suction power to forcibly suck thrombus into the suction catheter, the thrombus forcibly sucked into the suction catheter is easy to cause the blockage of the suction catheter, once the suction catheter is blocked, the suction catheter needs to be withdrawn for cleaning, and then the thrombus is re-inserted after cleaning, so that the operation efficiency is low, and the operation risk is increased.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a thrombus suction device, which aims to solve the technical problem that the existing suction device is difficult to treat thrombus with relatively large volume.
In order to achieve the above object, the thrombus aspiration device of the present invention provides the following technical solutions:
a thrombus aspiration device, comprising:
a support catheter for establishing a passageway between the aspiration catheter and the thrombus;
an aspiration catheter having a distal end extending through the support catheter to a thrombus site and a proximal end connected to an external aspiration device;
the cutting component is arranged at the far end of the supporting catheter and can seal the far end of the supporting catheter, when the suction catheter sucks thrombus, after the suction catheter struts the cutting component at the far end of the supporting catheter, the suction catheter pulls the thrombus to the supporting catheter, and when the suction catheter withdraws, the cutting component seals the far end of the supporting catheter and simultaneously completes cutting the thrombus entering the supporting catheter
As a further optimized technical scheme, the cutting component comprises a circular baffle, the size of the baffle is matched with the inner diameter of the supporting catheter, one end of the baffle is in running fit with the inner diameter of the supporting catheter, and when the baffle rotates to be in an axial state perpendicular to the supporting catheter, the baffle seals the far end of the supporting catheter;
one side of the baffle plate, which is back to the far-end opening of the supporting catheter, is provided with a broken bolt structure.
As a further optimized technical scheme, the breaking bolt structure is a cutter vertically fixed on the baffle at intervals.
As a further optimized technical scheme, the baffle is also provided with a pressure balance structure for maintaining the pressure balance in the support catheter when the suction catheter sucks thrombus in the support catheter.
As a further optimized technical scheme, the pressure balance structure is a through hole arranged on the cutting component, and the diameter of the through hole is smaller than that of the suction catheter.
As a further optimized technical scheme, a limiting block is arranged on the inner side wall of the supporting catheter and used for limiting the baffle to rotate and reset to a state of closing the supporting catheter after the suction catheter is retracted. .
As a further optimized technical scheme, the limiting block is hemispherical, and the outer side wall of the distal end of the suction catheter is provided with a chamfer for the suction catheter to pass over the limiting block under the action of pushing force.
As a further optimized technical scheme, the inner side wall of the supporting catheter is provided with a containing structure, and the containing structure is used for containing the baffle and ensuring that the suction catheter avoids the thrombus breaking structure to smoothly penetrate out of the far end of the supporting catheter.
As a further optimized technical scheme, the storage structure is a groove formed in the inner side wall of the supporting guide pipe, the shape of the groove is matched with that of the baffle plate, and the depth of the groove is not smaller than the common thickness of the baffle plate and the bolt breaking structure.
As a further optimized technical scheme, the inner side walls of the suction duct and/or the supporting duct are/is provided with a lubricating layer.
The beneficial effects are that: according to the invention, the cutting component is arranged at the distal end of the supporting catheter, so that when a thrombus with a relatively large volume is sucked, the thrombus can be drawn into the supporting catheter by the suction catheter, and then the thrombus is cut while the supporting catheter is closed by the cutting component, so that the cut thrombus is cut in the supporting catheter, the escape of the thrombus in the process of cutting the thrombus is effectively avoided, the volume of the thrombus after cutting is reduced, further suction of the suction catheter is facilitated, the condition of catheter blockage cannot occur, the safety performance of an operation is effectively improved by using the device, the suction catheter is not required to be repeatedly withdrawn from the body for cleaning, the safety performance of the operation is ensured, and the operation efficiency of the operation is effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:
FIG. 1 is a schematic view showing the overall structure of a thrombus aspiration device according to an embodiment of the present invention;
fig. 2 is a schematic view showing the operation of the thrombus aspiration device according to one embodiment of the present invention.
In the figure: 1. supporting the catheter; 2. a suction catheter; 3. thrombus; 4. a cutting member; 401. a baffle; 402. a breaking bolt structure; 403. a pressure balancing structure; 404. a storage structure; 5. and a limiting block.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
Example 1 of a thrombus aspiration device:
The invention provides a thrombus sucking device, which is characterized in that the distal end of a supporting catheter is provided with a cutting component, so that when thrombus with relatively large volume is treated, the thrombus can be dragged into the supporting catheter through the sucking catheter, then the distal end of the supporting catheter is sealed by the cutting component, and simultaneously, the thrombus is cut in the supporting catheter, so that compared with the prior art, the thrombus is cut in a blood vessel, the probability of embolic escape is effectively reduced, and the safety performance of an operation is improved; and the probability of blocking the suction catheter is greatly reduced in the process that the cut thrombus is sucked and discharged out of the body through the suction catheter.
As shown in fig. 1, fig. 1 shows a schematic overall structure of a thrombus aspiration device provided by the present invention, the thrombus aspiration device includes a support catheter 1, an aspiration catheter 2, and a cutting member 4, wherein the support catheter 1 is used to establish a passageway between the aspiration catheter 2 and thrombus 3 during a surgical procedure; the distal end of the aspiration catheter 2 is then moved along the interior of the support catheter 1 to the thrombus 3 position, the proximal end being connected to an external aspiration device to provide aspiration force; the cutting member 4 is mounted on the distal end of the support catheter 1 and is movable at the distal end of the support catheter 1 to effect closing or opening of the distal end of the support catheter 1. Thus, when the aspiration catheter 2 aspirates the thrombus 3 during the operation, the distal end of the support catheter 1 is opened by the cutting member 4 to facilitate the aspiration catheter 2 to pierce out of the distal end of the support catheter 1, and then the thrombus 3 is drawn into the support catheter 1, and when the aspiration catheter 2 is withdrawn, the cutting member 4 completes the cutting of the thrombus 3 entering into the support catheter 1 while closing the distal end of the support catheter 1.
The cutting member 4 comprises circular flaps 401, the outer dimensions of which flaps 401 are adapted to the inner diameter of the support catheter 1, so that the flaps 401 close the distal end of the support catheter 1 when in an axial position perpendicular to the support catheter 1, and at the same time, the flaps 401 open the distal end of the support catheter 1 after changing from the position closing the support catheter 1. In addition, in order to ensure that the baffle 401 completely fits the inner sidewall of the support duct 1 after rotating to open the support duct 1, the baffle 401 itself has an arc adapted to the inner sidewall of the support duct 1.
Specifically, one end of the blocking piece 401 is rotatably fitted with the inner diameter of the support duct 1, thereby facilitating the rotation of the fitted state with the support duct 1. In this embodiment, in order to conveniently realize the blocking of the blocking piece 401 and the moving process of opening the supporting catheter 1, the blocking piece 401 may be rotatably connected in the supporting catheter 1 through a pin shaft, and a torsion spring is installed on the pin shaft, so that the automatic resetting process of the blocking piece 401 may be realized, specifically, in order to ensure that the blocking piece 401 is just perpendicular to the axis of the supporting catheter 1 in the resetting process of the torsion spring, a limiting block 5 is fixedly connected to the inner side wall of the supporting catheter 1, and the limiting block 5 is disposed at the radially opposite position where the supporting catheter 1 is rotatably connected with the blocking piece 401, so that after the suction catheter 2 is withdrawn, the blocking piece 401 just touches the limiting block 5 to stop rotating when rotating and resetting, and at this time, the blocking piece 401 restores the state of the sealing supporting catheter 1.
In this embodiment, in order to facilitate the suction catheter 2 to pass through the stopper 5 smoothly under the action of pushing force, the stopper 5 is hemispherical, and a chamfer is provided on the outer side wall of the distal end of the suction catheter 2. This corresponds to the distal end of the suction catheter 2 being retracted inwardly by a certain dimension, thereby reducing the radial dimension of the distal end of the suction catheter 2, and facilitating the penetration of the suction catheter 2 beyond the stopper 5 and out of the distal end of the support catheter 1 in cooperation with the hemispherical stopper 5 having a guiding function.
The side wall of the baffle plate 401 facing away from the distal opening of the support catheter 1 is provided with a breaking pin structure 402, and in this embodiment, the breaking pin structure 402 is a cutter vertically fixed on the baffle plate 401 at intervals. In this way, the baffle 401 cuts the thrombus 3 during the process of returning to the state of vertically supporting the catheter 1 by rotation, and the thrombus 3 is processed into loose tissues with a plurality of incisions, and at the moment, the thrombus 3 is not completely chopped into a plurality of small blocks by the cutter, but the existence of the incisions enables the thrombus 3 to be no longer a complete whole, when the suction catheter 2 sucks, the thrombus 3 is further decomposed into a plurality of small thrombus blocks under the action of the suction force to be sucked and discharged by the suction catheter 2.
In order to ensure that the aspiration catheter 2 maintains pressure balance in the support catheter 1 when aspirating thrombus 3 in the support catheter 1, the baffle 401 is further provided with a pressure balance structure 403. In this embodiment, the pressure balancing structure 403 is at least one through hole parallel to the extending direction of the cutter, the diameter of the through hole is smaller than that of the suction catheter 2, and a plurality of through holes with smaller diameters are preferably provided, so that pressure balancing in the suction process can be ensured, and tiny emboli can be prevented from freeing the support catheter 1 from the through holes.
Further, the baffle 401 has a non-cutting area and a cutting area, the bolt breaking structure 402 is disposed in the cutting area, and the pressure balancing structure 403 is disposed in the non-cutting area. In this way, the suction catheter 2 passes through the non-cutting region to drive the baffle 401 to rotate, so that the broken bolt structure 402 at the position of the cutting region is prevented from damaging the suction catheter 2. In this embodiment, the cutting area is disposed concentrically with the non-cutting area, the cutting area is located at the inner side of the baffle 401, and the non-cutting area is located at the outer edge of the baffle 401.
Further, a receiving structure 404 is disposed on the inner sidewall of the support catheter 1, and the receiving structure 404 is used for receiving the baffle 401, so as to ensure that the suction catheter 2 avoids the thrombus breaking structure 402 and smoothly passes out of the distal end of the support catheter 1. In this embodiment, the receiving structure 404 is a groove formed on the inner sidewall of the supporting tube 1, the shape of the groove is matched with the shape of the baffle plate 401, and the depth of the groove is not less than the thickness of the baffle plate 401 and the bolt breaking structure 402.
Through the groove on the inner side wall of the support catheter 1, when the suction catheter 2 pushes the baffle plate 401 to be extended out of the distal end of the support catheter 1 to suck thrombus 3, the baffle plate 401 is pushed by the suction catheter 2 to carry the thrombus breaking structure 402 to completely rotate and retract into the groove, so that the suction catheter 2 can smoothly pass through the position of the baffle plate 401 and cannot be scratched by the thrombus breaking structure 402.
Further, a lubrication layer is provided on the inner side walls of the suction duct 2 and/or the support duct 1. The lubricating layer can be made of teflon or other materials to enhance the lubricity and reduce the friction performance between the thrombus 3 and the inner side of the suction catheter 2 and/or the support catheter 1, thereby facilitating the thrombus removal operation.
In this embodiment, the suction catheter 2 has a truncated cone shape from the proximal end to the distal end, that is, the inner diameter of the suction catheter 2 gradually decreases from the proximal end to the distal end, and the diameter of the proximal end of the suction catheter 2 is further enlarged compared with the prior art, so that the loss of suction pressure can be effectively reduced due to the gradual decrease of the inner cavity of the suction catheter 2 from the proximal end to the distal end, and the distal end of the suction catheter 2 with a smaller diameter can extend through a more finer blood vessel during the operation, thereby increasing the operation range.
The specific working principle of the invention is as follows: as shown in fig. 2, the supporting catheter 1 enters the blood vessel at the femoral artery and moves to the position of the thrombus 3 along the blood vessel, then the distal end of the aspiration catheter 2 penetrates the supporting catheter 1 and moves towards the position of the thrombus 3 in the supporting catheter 1, the baffle 401 is pushed to rotate outwards until completely entering the groove when moving to the position of the cutting component 4, the baffle 401 rotates outwards, the aspiration catheter 2 moves to the distal end of the supporting catheter 1 through the position of the baffle 401, the aspiration catheter 2 can normally aspirate the thrombus 3 with smaller volume, when aspirating to the thrombus 3 with larger volume, the thrombus 3 cannot directly enter the aspiration catheter 2 and is only adsorbed to the distal end of the aspiration catheter 2 because the thrombus 3 with larger volume is only sucked to the distal end of the aspiration catheter 2, at the moment, the aspiration catheter 2 is slowly retreated back into the supporting catheter 1, meanwhile, the aspiration catheter 2 drags the thrombus 3 into the supporting catheter 1, when retreating to the inner side of the baffle 401, the baffle 401 is automatically reset after losing the support of the aspiration catheter 2, the cutter on the baffle 401 cuts the thrombus 3 in the reset process, and then the aspiration catheter 2 aspirates and discharges the thrombus.
In other embodiments of the thrombus aspiration device, unlike embodiment 1, in this embodiment, the thrombus-breaking structure may be needle-like members vertically fixed to the blades at intervals, and the needle-like members penetrate into the thrombus during the return of the blades to the state of vertically supporting the catheter, and also break loose large pieces of thrombus tissue, which may facilitate the aspiration of the subsequent aspiration catheter.
In other embodiments of the thrombus aspiration device, unlike embodiment 1, in this embodiment, the stopper may have a right triangular prism shape, and a side of the stopper facing away from the distal end of the support catheter has a guiding function, and a side of the stopper facing toward the distal end of the support catheter perpendicularly supports the inner side wall of the catheter and has a stopper piece function.
It is to be understood that the above description is intended to be illustrative, and that the embodiments of the present application are not limited thereto.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A thrombus aspiration device, comprising:
a support catheter (1) for establishing a passageway between the aspiration catheter (2) and the thrombus (3);
a suction catheter (2), the distal end of the suction catheter (2) extending through the support catheter (1) to the location of the thrombus (3), the proximal end being connected to an external suction device;
The cutting component (4), cutting component (4) set up in support pipe (1) distal end and can seal support pipe (1) distal end, when aspiration pipe (2) aspiration thrombus (3), after aspiration pipe (2) struts cutting component (4) of support pipe (1) distal end, aspiration pipe (2) pulls thrombus (3) to support pipe (1), when aspiration pipe (2) withdraw, cutting component (4) seal support pipe (1) distal end and accomplish the cutting to entering support pipe (1) interior thrombus (3).
2. The thrombus aspiration device according to claim 1, wherein said cutting member (4) comprises a circular flap (401), the dimensions of the flap (401) being adapted to the inner diameter of said support catheter (1), one end of said flap (401) being in a rotational fit with the inner diameter of said support catheter (1), said flap (401) closing the distal end of the support catheter (1) when said flap (401) is rotated to an axial condition perpendicular to the support catheter (1);
the baffle plate (401) is provided with a broken bolt structure (402).
3. The thrombus aspiration device of claim 2, wherein the thrombus formation (402) is a cutter vertically fixed to the baffle (401) at intervals.
4. A thrombus aspiration device according to claim 3, wherein said baffle (401) is further provided with pressure balancing means (403) for maintaining the pressure balance in the support catheter (1) when the aspiration catheter (2) aspirates a thrombus (3) in the support catheter (1).
5. The thrombus aspiration device according to claim 4, wherein said pressure balancing structure (403) is at least one through hole provided on said cutting member (4), the diameter of said through hole being smaller than the diameter of said aspiration catheter (2).
6. The thrombus aspiration device according to claim 2, wherein a stopper (5) is provided on the inner side wall of the support catheter (1) for restricting the rotation of the flap (401) to return to the state of closing the support catheter (1) after the aspiration catheter (2) is withdrawn.
7. Thrombus aspiration device according to claim 6, characterized in that the stopper (5) is hemispherically shaped, and the distal outer side wall of the aspiration catheter (2) is provided with a chamfer for the aspiration catheter (2) to pass over the stopper (5) under the action of a pushing force.
8. The thrombus aspiration device according to any one of claims 3-7, wherein a receiving structure (404) is provided on the inner side wall of the support catheter (1), said receiving structure (404) being adapted to receive the baffle (401) to ensure that the aspiration catheter (2) is smoothly passed out of the distal end of the support catheter (1) avoiding the thrombus breaking structure (402).
9. The thrombus aspiration device according to claim 8, wherein said receiving structure (404) is a groove provided on the inner side wall of said support catheter (1), the shape of said groove being adapted to the shape of said baffle (401), the depth of said groove being not less than the thickness of said baffle (401) in common with said breaking structure (402).
10. The thrombus aspiration device according to any one of claims 1-7, wherein a lubricating layer is provided on the inner side wall of the aspiration catheter (2) and/or the support catheter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410149468.0A CN117958904B (en) | 2024-02-02 | 2024-02-02 | Thrombus suction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410149468.0A CN117958904B (en) | 2024-02-02 | 2024-02-02 | Thrombus suction device |
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| CN117958904A true CN117958904A (en) | 2024-05-03 |
| CN117958904B CN117958904B (en) | 2024-07-16 |
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| CN202410149468.0A Active CN117958904B (en) | 2024-02-02 | 2024-02-02 | Thrombus suction device |
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| US20220323087A1 (en) * | 2021-04-07 | 2022-10-13 | Expanse Technology Partners, LLC | Aspiration catheter |
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- 2024-02-02 CN CN202410149468.0A patent/CN117958904B/en active Active
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