CN117562622A - Thrombus removing and crushing device and thrombus remover - Google Patents
Thrombus removing and crushing device and thrombus remover Download PDFInfo
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- CN117562622A CN117562622A CN202311591363.2A CN202311591363A CN117562622A CN 117562622 A CN117562622 A CN 117562622A CN 202311591363 A CN202311591363 A CN 202311591363A CN 117562622 A CN117562622 A CN 117562622A
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- thrombus
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- expandable mesh
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 134
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- 206010040844 Skin exfoliation Diseases 0.000 claims 2
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- 229910001000 nickel titanium Inorganic materials 0.000 description 6
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- 238000005520 cutting process Methods 0.000 description 5
- 230000002537 thrombolytic effect Effects 0.000 description 5
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- 238000013151 thrombectomy Methods 0.000 description 4
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- 239000003146 anticoagulant agent Substances 0.000 description 1
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Classifications
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- 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
- A61B17/22—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
- A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
- A61B17/22032—Gripping instruments, e.g. forceps, for removing or smashing calculi having inflatable gripping elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
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- 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
- A61B2017/22001—Angioplasty, e.g. PCTA
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- 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
- A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
- A61B2017/22035—Gripping instruments, e.g. forceps, for removing or smashing calculi for retrieving or repositioning foreign objects
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- 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
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- 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
- A61B2017/22082—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 after introduction of a substance
- A61B2017/22084—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 after introduction of a substance stone- or thrombus-dissolving
Abstract
The embodiment of the application discloses thrombus takes off garrulous device, it includes expandable mesh, a housing, inflation drive assembly and rotation drive assembly, the casing is located the second end side, inflation drive assembly locates the casing, inflation drive assembly is connected with the distal end of expandable mesh, inflation drive assembly can drive the distal end of expandable mesh to slide and be close to the proximal end of expandable mesh, so that expandable mesh switches to the inflation state, inflation drive assembly can also drive the distal end of expandable mesh to slide and keep away from the proximal end of expandable mesh, so that expandable mesh switches to the shrinkage state, rotation drive assembly locates the casing, rotation drive assembly is connected with the proximal end of expandable mesh, rotation drive assembly can drive the proximal end of expandable mesh to rotate. The embodiment of the application discloses a thrombus remover, which comprises a thrombus removing and crushing device and a thrombus sucking component. The thrombus removing and crushing device and the thrombus remover are simple in structure, convenient to operate, easy to crush thrombus and applicable to blood vessels of different sizes.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a thrombus removing and crushing device and a thrombus remover.
Background
Thrombus can cause swelling, pain and ulcers of limbs of patients, even cause pulmonary embolism, endanger life and are clinically treated by the modes of thrombus suction, thrombolysis or mechanical thrombus removal.
Because of slow treatment effect and limited treatable conditions and some complications, most patients, especially emergency patients, are treated by adopting a mechanical thrombolysis mode finally.
Mechanical thrombectomy (Percutaneous Mechanical Thrombectomy, PMT) is the primary method of treating venous thromboembolism, and the equipment required to implement this method includes mechanical thrombectomy devices whose quality and performance directly affect the therapeutic effect, so continued improvement of mechanical thrombectomy devices is a constant pursuit by those skilled in the art.
A mechanical thrombus clearing device in the prior art scrapes thrombus on the inner wall of a blood vessel through a thrombus taking support, has high operation resistance, directly acts on the acting force of the thrombus, can not automatically adjust the shape when encountering resistance, can be used for hard operation, has low comfort level, and is easy to damage the inner wall of the blood vessel.
Therefore, there is a strong need for a thrombus removal device and thrombus remover that has a simple structure, is easy to operate, is easy to break a thrombus, and is suitable for blood vessels of different sizes, so as to overcome the above-mentioned drawbacks.
Disclosure of Invention
The thrombus removing and crushing device is simple in structure, convenient to operate, easy to crush thrombus and suitable for blood vessels of different sizes.
In order to achieve the above object, an embodiment of the present application provides a thrombus removal device, including an expandable mesh, a housing, an expansion driving assembly and a rotation driving assembly, wherein the housing is located beside the second end, the expansion driving assembly is located at the housing, the expansion driving assembly is connected with a distal end of the expandable mesh, the expansion driving assembly can drive the distal end of the expandable mesh to slide close to a proximal end of the expandable mesh so as to enable the expandable mesh to switch to an expanded state, the expansion driving assembly can also drive the distal end of the expandable mesh to slide away from the proximal end of the expandable mesh so as to enable the expandable mesh to switch to a contracted state, the rotation driving assembly is located at the housing, the rotation driving assembly is connected with the proximal end of the expandable mesh, and the rotation driving assembly can drive the proximal end of the expandable mesh to rotate.
Preferably, the expansion driving assembly comprises a seeker, a traction rope and a traction assembly; the introducer is disposed at a distal end of the expandable mesh; the distal end of the haulage rope is connected with the seeker, and the proximal end of the haulage rope extends out of the expandable mesh from the proximal end of the expandable mesh; the traction assembly is arranged on the shell and/or the rotation driving assembly, the proximal end of the traction rope is connected with the output end of the traction assembly, the traction rope can drive the distal end of the expandable mesh to slide close to the proximal end of the expandable mesh in a linkage way under the driving of the traction assembly, and the expandable mesh has a constant trend of keeping a contracted state.
Preferably, the traction assembly is a fishing line wheel, the proximal end of the traction rope is connected to the fishing line wheel, the fishing line wheel is arranged on the shell and/or the rotation driving assembly, and the fishing line wheel can reel the traction rope under operation or release the reeled traction rope.
Preferably, the rotation driving assembly comprises a rotation tube and a rotation driver, the rotation tube is rotatably arranged on the shell, the far end of the rotation tube extends out of the shell and is connected with the near end of the expandable net, the rotation driver is arranged on the shell, the rotation tube is in transmission connection with the output end of the rotation driver, the near end of the haulage rope penetrates through the rotation tube to extend out of the shell through the rotation tube, and the fishing line wheel is positioned outside the shell and is arranged on the shell.
Preferably, the traction assembly comprises a telescopic screw rod and an operation nut; the telescopic screw rod can slide along the axial direction of the telescopic screw rod, the telescopic screw rod is arranged on the shell and/or the rotation driving assembly, and the distal end of the telescopic screw rod is connected with the proximal end of the traction rope; the operating nut is assembled on the telescopic screw rod and is rotatably arranged on the shell and/or the rotation driving assembly.
Preferably, the rotation driving assembly comprises a rotation tube and a rotation driver, the rotation tube is rotatably arranged in the shell, the far end of the rotation tube extends out of the shell and is connected with the near end of the expandable net, the rotation driver is arranged in the shell, the rotation tube is in transmission connection with the output end of the rotation driver, the telescopic screw rod penetrates into the rotation tube, the near end of the traction rope penetrates into the rotation tube and is connected with the telescopic screw rod, and the operation nut is rotatably arranged in the rotation tube.
Preferably, the proximal end of the rotating tube extends out of the housing, and the operating nut is located outside the housing and abuts against the proximal end of the rotating tube.
Preferably, the rotation driving assembly further comprises a driving shaft, a driving gear and a driven gear, wherein the driving shaft is arranged in parallel with the rotation tube, the driven gear is fixedly connected with the rotation tube, the driving shaft is fixedly connected with an output shaft of the rotation driver, and the driven gear is in transmission connection with the driving gear.
Preferably, the rotation driving assembly further comprises a speed regulating assembly, the driving gears are arranged on the driving shaft, the sizes of the driving gears are different, the speed regulating assembly is arranged on the rotation driver and/or the driving shaft, and the speed regulating assembly can drive the driving gears with different sizes to be in transmission connection with the driven gears under operation.
Preferably, the speed regulating assembly comprises a sliding piece, an elastic piece and an operating rod; the sliding piece is arranged on the shell in a sliding manner along the axial direction of the driving shaft; one end of the elastic piece is connected with the rotary driver and/or the driving shaft, and the other end of the elastic piece is connected with the sliding piece; one end of the operating rod is fixed on the rotary driver and/or the driving shaft, the other end of the operating rod extends out of the shell, and the operating rod can drive the driving shaft to slide along the axial direction of the driving shaft under operation and can drive the driving shaft to slide along the radial direction of the driving shaft.
Preferably, the speed regulating assembly further comprises a clamping piece, the clamping piece is arranged on the shell, and when the driving gear is in transmission connection with the driven gear, the clamping piece can lock the operating rod under operation.
Preferably, the clamping pieces are in one-to-one correspondence with the driving gears.
Preferably, the rotation driving assembly further comprises a direction adjusting assembly, the direction adjusting assembly is arranged between the driving shaft and the rotating pipe, the driving gear is in transmission connection with the driven gear through the direction adjusting assembly, and the direction adjusting assembly can switch the driving gear and the driven gear into same-direction rotation or reverse rotation under operation.
Preferably, the direction adjusting assembly further comprises an intermediate shaft, a reverse gear and a same-direction gear set, the intermediate shaft is arranged in parallel with the rotating tube, the reverse gear is fixed on the intermediate shaft, the same-direction gear set is arranged on the intermediate shaft, the intermediate shaft is slidably arranged on the shell along the axial direction of the intermediate shaft, and the intermediate shaft can drive the reverse gear and the same-direction gear set to slide along the axial direction of the intermediate shaft under operation.
Preferably, the same-direction gear set further comprises a flange plate, a first steering gear and a second steering gear, wherein the flange plate is fixed on the intermediate shaft, and the first steering gear and the second steering gear are respectively rotatably arranged on the flange plate and meshed with each other.
Preferably, the intermediate shaft is provided with a first limiting part and a second limiting part which are spaced apart, the first limiting part is abutted to the shell when the reverse gear slides to be meshed with the driven gear, and the second limiting part is abutted to the shell when the same-direction gear set slides to be meshed with the driven gear.
Preferably, the proximal end of the intermediate shaft extends out of the housing, the first limiting portion is located in the housing, and the second limiting portion is located outside the housing.
Preferably, the distal end of the expandable mesh and the proximal end of the expandable mesh are each provided with a developing ring.
Preferably, the proximal end of the rotation tube is rotatably mounted to the housing by means of a bearing.
Preferably, the proximal end of the intermediate shaft is rotatably mounted to the housing by means of a bearing.
Preferably, the expandable mesh is made of super-elastic memory material and/or expandable polymer fibers and is a woven structure of intersecting diamond shapes.
Preferably, the proximal end of the expandable mesh is connected with the rotating tube by hot melting, and the distal end of the expandable mesh is connected with the guide head by one or more of pressing riveting, hot melting and gluing.
In a second aspect, to achieve the above object, an embodiment of the present application further provides a thrombus remover, including a thrombus-shredding device and a thrombus-aspiration assembly for aspirating out the thrombus shredded by the thrombus-shredding device, the thrombus-aspiration assembly being assembled and connected with the thrombus-shredding device.
In a third aspect, in order to achieve the above object, an embodiment of the present application further provides a thrombus remover, including a thrombus breaking device and a thrombus aspiration assembly for sucking out the broken thrombus breaking device, the thrombus aspiration assembly includes an aspiration tube, a funnel-shaped tip and a luer connector, the aspiration tube is located outside the housing and sleeved with the rotating tube, the aspiration tube is located between the expandable mesh and the housing along an axial direction of the rotating tube, the funnel-shaped tip is disposed at a distal end of the aspiration tube and is communicated with the aspiration tube, and the luer connector is disposed at a proximal end of the aspiration tube and is communicated with the aspiration tube.
Preferably, the funnel-shaped tip is composed of a structural framework and a film coated on the structural framework.
Preferably, the film is made of polyamide or polyurethane based thermo-elastic material.
Preferably, the membrane is made of one or more of PTFE, ePTFE, PU, TPU and TPE.
Preferably, the Shore hardness of the polyamide or polyurethane thermo-elastic material is 30 HD-45 HD, and the thickness of the film is 0.05-0.15 mm.
Preferably, the structural framework is an expandable mesh.
Preferably, the contoured skeleton is made of a superelastic nickel-titanium alloy.
Preferably, the structural framework is formed by braiding and welding super-elastic nickel-titanium alloy wires; or the structural framework is formed by laser engraving of the super-elastic nickel-titanium alloy pipe body.
Preferably, the structural framework is formed by laser cutting and thermal expansion of a metal pipe with a shape memory effect; or the structural framework is woven by metal wires with shape memory effect; or the structural framework is formed by injection molding of high-elasticity high polymer materials; or the structural framework is formed by injection molding of high-elasticity high polymer materials.
Preferably, the proximal end of the funnel-shaped tip is a thin neck part, the distal end of the funnel-shaped tip is an opening part, and a conical expansion part is arranged between the thin neck part and the opening part.
Preferably, the suction tube is made of nylon or polyurethane or PEBAX (block polyether amide).
Compared with the prior art, in the thrombus removing and crushing device, the expandable mesh can be switched to the contracted state by operating the expansion driving assembly so as to extend beside the thrombus on the blood vessel, then switched to the expanded state, and the expandable mesh in the expanded state can be driven to rotate by operating the rotation driving assembly so as to rapidly rub and drop and crush the thrombus adhered to the inner wall of the blood vessel, so that the thrombus crushing efficiency is improved; in addition, as the expandable mesh can automatically deform when encountering larger resistance, the expansion size of the expandable mesh can be controlled by operating the expansion driving assembly, so that the damage to the inner wall of a blood vessel can be avoided, and the expandable mesh is suitable for blood vessels with different sizes; therefore, the thrombus removing and crushing device provided by the embodiment of the application is simple in structure, convenient to operate, easy to crush thrombus and applicable to blood vessels of different sizes. In addition, because the thrombus remover of this application embodiment includes the thrombus of this application embodiment and takes off garrulous device, so thrombus remover simple structure, simple operation, the easy garrulous bolt of this application embodiment and be applicable to not blood vessel of equidimension.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic plan view of a thrombus remover according to a first embodiment of the present application.
FIG. 2 is a schematic plan view of a thrombus remover according to a second embodiment of the present application.
FIG. 3 is an enlarged view of a portion indicated by A in the thrombus remover shown in FIG. 1.
Fig. 4 is a partially enlarged view of a portion indicated by B in the thrombus remover shown in fig. 1.
Fig. 5 is a partially enlarged view of a portion indicated by C in the thrombus remover shown in fig. 2.
Fig. 6 is a state change diagram of a partial use step of the thrombus remover of the first embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
First, in the description of the embodiments of the present application, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Second, the terms "first," "second," "third," and the like are used merely to distinguish between the descriptions, the unordered, the light and heavy, and the like, and are not to be construed as indicating or implying relative importance, and features defining "first," "second," and the like may explicitly or implicitly include one or more such features.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
Furthermore, in the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The definition of "distal" and "proximal" in this application is: distal refers to the end of the medical device that first enters the patient during normal operation, and proximal refers to the end of the medical device that is near the operator during normal operation.
Referring to fig. 1, 3 and 4, a thrombus remover 3 according to a first embodiment of the present application includes a thrombus-shredding device 1 and a thrombus-aspiration assembly 2, wherein the thrombus-aspiration assembly 2 is assembled with the thrombus-shredding device 1 so that the thrombus-shredding device 1 aspirates the thrombus shredded by the thrombus-shredding device 1. More specifically, the following is:
as shown in fig. 1, 3 and 4, the thrombus aspiration assembly 2 comprises an aspiration tube 2a, a funnel-shaped tip 2b and a luer connector 2c, wherein the funnel-shaped tip 2b is arranged at the distal end of the aspiration tube 2a and is communicated with the aspiration tube 2a, the luer connector 2c is arranged at the proximal end of the aspiration tube 2a and is communicated with the aspiration tube 2a, the luer connector 2c is connected with a negative pressure device so that negative pressure is formed in the funnel-shaped tip 2b, thrombus at the distal end of the funnel-shaped tip 2b is sucked into the aspiration tube 2a under the action of the negative pressure and then is discharged through the luer connector 2c, and additionally, the thrombus can be delivered into a blood vessel through the thrombolytic medicine luer connector 2c through the aspiration tube 2a and the funnel-shaped tip 2b for assisting thrombolysis or thrombolysis.
As shown in fig. 1, 3 and 4, the thrombus reduction device 1 comprises an expandable mesh 10, a housing 20, an expansion driving assembly 30 and a rotation driving assembly 40, wherein the housing 20 is positioned beside a proximal end 10b of the expandable mesh 10, the expansion driving assembly 30 is arranged on the housing 20, the expansion driving assembly 30 is connected with a distal end 10a of the expandable mesh 10, so that the expansion driving assembly 30 drives the distal end 10a of the expandable mesh 10 to slide close to the proximal end 10b of the expandable mesh 10 to switch the expandable mesh 10 to an expanded state, and simultaneously facilitates the expansion driving assembly 30 to drive the distal end 10a of the expandable mesh 10 to slide away from the proximal end 10b of the expandable mesh 10 to switch the expandable mesh 10 to a contracted state, thus the expandable mesh 10 is convenient to extend into or withdraw from a blood vessel in the contracted state, and the expandable mesh 10 can be abutted against a thrombus on the inner wall of the blood vessel in the expanded state; the rotation driving assembly 40 is disposed on the housing 20, the rotation driving assembly 40 is connected to the proximal end 10b of the expandable mesh 10, and the rotation driving assembly 40 drives the proximal end 10b of the expandable mesh 10 to rotate, so that the expandable mesh 10 rotates in an expanded state, and the thrombus on the inner wall of the blood vessel can be separated and disintegrated.
As shown in fig. 1, 3 and 4, the expansion driving assembly 30 includes a seeker 31, a haulage rope 32 and a haulage assembly 33; a guide head 31 is provided at the distal end 10a of the expandable mesh 10; the distal end of the hauling cable 32 is connected to the seeker 31, the proximal end of the hauling cable 32 extends out of the expandable mesh 10 from the proximal end 10b of the expandable mesh 10, the proximal end of the hauling cable 32 is connected to the output end of the hauling component 33, the hauling component 33 is arranged in the rotation driving component 40, so that the hauling cable 32 is driven by the hauling component 33 to pull the distal end 10a of the expandable mesh 10 to slide close to the proximal end 10b of the expandable mesh 10 in a linkage manner, of course, the hauling component 33 can also be arranged on the shell 20 according to practical situations, or the hauling component 33 can also be arranged on the shell 20 and the rotation driving component 40 at the same time, and the effects can be achieved through adaptive adjustment, so that the effect is not limited; the expandable mesh 10 has a constant tendency to remain in a contracted state, so that the expandable mesh 10 in its expanded state is urged by its restoring potential energy, the distal end 10a of the expandable mesh 10 has a constant tendency to slip away from the proximal end 10b of the expandable mesh 10, so that the expandable mesh 10 in its expanded state can resume its contracted state without being urged by an external force.
As shown in fig. 1, 3 and 4, the traction assembly 33 includes a telescopic screw 331 and an operation nut 332; the telescopic screw rod 331 is capable of sliding along the axial direction of the telescopic screw rod 331, the telescopic screw rod 331 is arranged on the shell 20, the distal end of the telescopic screw rod 331 is connected to the proximal end of the hauling rope 32, the operating nut 332 is assembled on the telescopic screw rod 331 and is rotatably arranged on the rotation driving assembly 40, so that the operating nut 332 can drive the telescopic screw rod 331 to slide along the axial direction of the telescopic screw rod 331 under the rotation operation, and the hauling rope 32 is linked to drag the distal end 10a of the expandable mesh 10 to slide close to the proximal end 10b of the expandable mesh 10; it is understood that the telescopic screw 331 may be disposed on the housing 20, or the telescopic screw 331 may be disposed on both the housing 20 and the rotation driving assembly 40, and the above effects may be achieved through an adaptive arrangement, which is not limited thereto; it is further understood that the operation nut 332 may be rotatably disposed on the housing 20, or the operation nut 332 may be rotatably disposed on the housing 20 and the rotation driving assembly 40, and the above effects may be achieved by adaptive adjustment, which is not limited thereto.
As shown in fig. 1, 3 and 4, the rotation driving unit 40 comprises a rotation tube 41 and a rotation driver 42, the rotation tube 41 is rotatably disposed in the housing 20, the distal end of the rotation tube 41 extends out of the housing 20 and is connected to the proximal end 10b of the expandable mesh 10, the rotation driver 42 is disposed in the housing 20, the rotation tube 41 is in transmission connection with the output end of the rotation driver 42, so that the rotation driver 42 can drive the rotation tube 41 to rotate, and the proximal end 10b of the expandable mesh 10 is interlocked to rotate,
as shown in fig. 1, 3 and 4, the telescopic screw 331 is inserted into the rotating tube 41, the proximal end of the hauling rope 32 is inserted into the rotating tube 41 and connected to the telescopic screw 331, and the operating nut 332 is rotatably arranged on the rotating tube 41, so that the structure among the telescopic screw 331, the rotating tube 41 and the hauling rope 32 is more reasonable and compact, the occupied space of the telescopic screw 331, the rotating tube 41 and the hauling rope 32 can be further reduced, and the telescopic screw is convenient to go deep into a blood vessel; preferably, the telescopic screw 331 is axially fixed to the rotating tube 41, that is, the telescopic screw 331 rotates synchronously with the rotating tube 41, so that the rotating tube 41 drives the proximal end 10b of the expandable mesh 10 to rotate and also drives the distal end 10a of the expandable mesh 10 to rotate synchronously, thereby ensuring the breaking effect of the expandable mesh 10 on thrombus, and of course, the telescopic screw 331 can also rotate asynchronously with the rotating tube 41 and also can enable the expandable mesh 10 to have the breaking effect on thrombus in a blood vessel, so that the invention is not limited thereto.
As shown in fig. 1, 3 and 4, the proximal end of the rotating tube 41 extends out of the housing 20, and the operating nut 332 is located outside the housing 20 and abuts against the proximal end of the rotating tube 41, so that the structure among the rotating tube 41, the housing 20 and the operating nut 332 is more reasonable and compact, and the operating nut 332 is convenient to operate.
As shown in fig. 1, 3 and 4, the rotary driving assembly 40 further comprises a driving shaft 43, a driving gear 44 and a driven gear 45, wherein the driving shaft 43 is arranged parallel to the rotary tube 41, the driven gear 45 is fixedly connected with the rotary tube 41, the driving shaft 43 is fixedly connected with the output shaft of the rotary driver 42, and the driven gear 45 is directly or indirectly in transmission connection with the driving gear 44, so as to ensure that the rotary driver 42 drives the rotary tube 41 to rotate stably by means of the rotary driving assembly 40.
As shown in fig. 1, 3 and 4, the rotary driving assembly 40 further includes a speed adjusting assembly 46, the driving gear 44 is disposed on the driving shaft 43, and the two driving gears are different in size, and the speed adjusting assembly 46 is disposed on the rotary driver 42, so that the speed adjusting assembly 46 can be operated to drive the switching of the driving gears 44 and the driven gears 45 with different sizes, thereby changing the transmission ratio between the output end of the rotary driver 40 and the rotary tube 41, so as to adjust the rotation speed of the proximal end 10b of the expandable mesh 10 according to the practical situation, however, according to the practical situation, the speed adjusting assembly 46 can also be disposed on the driving shaft 43, or the speed adjusting assembly 46 is disposed on both the rotary driver 42 and the driving shaft 43, so that the above effects can be achieved.
Not limited to the figures, in other embodiments of the present application, the driving gears 44 may be provided with one, three, four, five, etc. unequal numbers, and when the number of driving gears 44 exceeds two, any two driving gears 44 are different in size.
As shown in fig. 1, two driving gears 44 are provided, namely a first driving gear 44a and a second driving gear 44b, the transmission ratio between the second driving gear 44b and the driven gear 45 is 1:1, the transmission ratio between the first driving gear 44a and the driven gear 45 is 2:1, so that the rotary cutting speed of the expandable mesh can be controlled to be changed, so as to adapt to a thrombus or plaque with higher hardness, for example, when the thrombus or plaque needs to be cut at a lower cutting speed, the second driving gear 44b can be connected with the driven gear 45 in a transmission way by the direction adjusting component 47, so that the rotation speed ratio between the driving shaft 43 and the rotating tube 41 is 1:1, and when the thrombus tissue needs to be cut at a higher cutting speed, the first driving gear 44a can be connected with the driven gear 45 in a transmission way by the direction adjusting component 47, so that the rotation speed ratio between the driving shaft 43 and the rotating tube 41 is 1:2; of course, according to practical situations, the transmission ratio between the first driving gear 44a and the driven gear 45 may be 1.5:1, therefore, is not limited thereto.
In addition, it should be noted that, not limited to the drawings, in other embodiments of the present application, the gear ratios among the first driving gear 44a, the second driving gear 44b, and the driven gear 45 may be other ratios, and the gear ratios are not limited to the above-mentioned gear ratios, so as to form the selection of the multiple gear ratios between the driving shaft 43 and the rotating tube 41.
As shown in fig. 1, the transmission ratio between the counter gear 472 and the driven gear 45 is 1:1, however, according to practical situations, the transmission ratio between the counter gear 472 and the driven gear 45 may be other ratios, which is not limited thereto; the transmission ratio between the first steering gear 473b, the second steering gear 473c and the driven gear 45 is 1:1:2, however, according to the actual situation, the transmission ratio between the first steering gear 473b, the second steering gear 473c and the driven gear 45 may be other ratios, which is not limited thereto.
As shown in fig. 1, the first driving gear 44a, the first driving gear 44b, the driven gear 45, the first steering gear 473b, and the second steering gear 473c are spur gears, and may be gears capable of smoothly transmitting power, such as bevel gears or herringbone gears, depending on the actual situation, but the present invention is not limited thereto.
As shown in fig. 1, 3 and 4, the timing assembly 46 includes a slider 461 and an elastic member 462; the sliding part 461 is slidably arranged on the casing 20 along the axial direction of the driving shaft 43, one end of the elastic part 462 is connected to the rotation driver 42, and the other end of the elastic part 462 is connected to the sliding part 461, so that the rotation driver 42 can slide along with the sliding part 461 by means of the elastic part 462, and the driving gear 44 forms reliable transmission connection with the driven gear 45 under the elastic driving of the elastic part 462; it is understood that when the speed adjusting assembly 46 is also disposed on the driving shaft 43, one end of the elastic member 462 is connected to the driving shaft 43, and when the speed adjusting assembly 46 is disposed on both the rotary driver 42 and the driving shaft 43, one end of the elastic member 462 is connected to both the rotary driver 42 and the driving shaft 43.
As shown in fig. 1, 3 and 4, the speed regulation assembly 46 further comprises an operation rod 463, one end of the operation rod 463 is fixed to the rotary driver 42, and the other end of the operation rod 463 extends out of the housing 20, so that the operation rod 463 drives the driving shaft 43 to slide along the axial direction of the driving shaft 43 under operation, and simultaneously drives the driving shaft 43 to slide along the radial direction of the driving shaft 43, so that any driving gear 44 on the driving shaft 43 is directly or indirectly in driving connection with the driven gear 45; of course, according to the actual situation, one end of the operation lever 463 may be fixed to the driving shaft 43, or one end of the operation lever 463 may be fixed to the rotary driver 42 and the driving shaft 43, and the above-described effects can be achieved by the adaptive arrangement.
As shown in fig. 1, 3 and 4, the speed adjusting assembly 46 further includes a blocking member 464, wherein the blocking member 464 is disposed on the housing 20, and the blocking member 464 can operatively lock the operating lever 463 when the driving gear 44 is in driving connection with the driven gear 45, so as to form a reliable and stable driving connection between the driving gear 44 and the driven gear 45, and ensure that the driving gear 44 and the driven gear 45 can be fixed at a configured transmission ratio.
As shown in fig. 1, 3 and 4, the latches 464 are in a one-to-one correspondence with the drive gears 44 so that the latches 464 can be reliably locked at each gear ratio.
As shown in fig. 1, 3 and 4, the rotation driving assembly 40 further includes a direction adjusting assembly 47, the direction adjusting assembly 47 is disposed between the driving shaft 43 and the rotation tube 41, the driving gear 44 is in transmission connection with the driven gear 45 by means of the direction adjusting assembly 47, so that the direction adjusting assembly 47 can switch the driving gear 44 and the driven gear 45 to rotate in the same direction or in opposite directions under operation, and the expandable mesh 10 can rotate in the forward direction and in the reverse direction according to practical situations, thereby facilitating the removal of old thrombus.
As shown in fig. 1, 3 and 4, the steering assembly 47 further includes a middle shaft 471, a counter gear 472 and a co-directional gear set 473, where the middle shaft 471 is arranged parallel to the rotating tube 41, the counter gear 472 is fixed to the middle shaft 471, the co-directional gear set 473 is disposed on the middle shaft 471, and the middle shaft 471 is slidably disposed on the housing 20 along an axial direction of the middle shaft 471, so that the middle shaft 471 drives the counter gear 472 and the co-directional gear set 473 to slide along the axial direction of the middle shaft 471 under operation, so as to selectively drive the counter gear 472 to simultaneously mesh with the driving gear 44 and the driven gear 45, i.e. the driving gear 44 and the driven gear 45 reversely rotate, or selectively drive the co-directional gear set 473 to simultaneously mesh with the driving gear 44 and the driven gear 45, i.e. the driving gear 44 and the driven gear 45 synchronously rotate.
As shown in fig. 1, 3 and 4, the same-direction gear set 473 further includes a flange 473a, a first steering gear 473b and a second steering gear 473c, where the flange 473a is fixed to the intermediate shaft 471, and the first steering gear 473b and the second steering gear 473c are rotatably disposed on the flange 473a and engaged with each other, so that the structure of the same-direction gear set 473 is more compact.
As shown in fig. 1, 3 and 4, the intermediate shaft 471 is provided with a first limit part 471a and a second limit part 471b which are spaced apart, and when the counter gear 472 slides to engage with the driven gear 45, the first limit part 471a abuts against the housing 20, so that the counter gear 472 can slide to engage with the driven gear 45 quickly and accurately; when the same-direction gear set 473 slides to engage with the driven gear 45, the second limiting portion 471b abuts against the housing 20, so that the same-direction gear set 473 can slide to engage with the driven gear 45 quickly and accurately.
As shown in fig. 1, 3 and 4, the proximal end of the intermediate shaft 471 extends out of the housing 20, the first limiting portion 471a is located in the housing 20, and the second limiting portion 471b is located outside the housing 20, so that the structure among the first limiting portion 471a, the second limiting portion 471b, the housing 20 and the intermediate shaft 471 is more compact.
As shown in fig. 1, 3 and 4, the distal end 10a of the expandable mesh 10 and the proximal end 10b of the expandable mesh 10 are each provided with a developing ring 50.
As shown in fig. 1, 3 and 4, the proximal end of the rotation tube 41 is rotatably assembled to the housing 20 by means of a bearing 60, so that the rotation tube 41 rotates smoothly.
As shown in fig. 1, 3 and 4, the proximal end of the intermediate shaft 471 is rotatably mounted to the housing 20 by means of the bearing 60, so that the intermediate shaft 471 rotates smoothly.
As shown in fig. 1, 3 and 4, the expandable mesh 10 is made of super-elastic memory material and/or expandable polymer fibers and is a woven structure of intersecting diamond shapes.
As shown in fig. 1, 3 and 4, the proximal end 10b of the expandable mesh 10 is heat-staked to the rotating tube 41, and the distal end 10a of the expandable mesh 10 is attached to the introducer 31 by one or more of crimping, heat-staking and gluing.
As shown in fig. 1, 3 and 4, the aspiration tube 2a is located outside the housing 20 and is fitted around the rotation tube 41, the aspiration tube 2a is located between the expandable mesh 10 and the housing 20 in the axial direction of the rotation tube 41, the funnel-shaped tip 2b is provided at the distal end of the aspiration tube 2a and communicates with the aspiration tube 2a, and the luer connector 2c is provided at the distal end of the aspiration tube 2a and communicates with the aspiration tube 2a to secure the thrombus aspiration assembly.
Preferably, the funnel-shaped tip 2b is composed of a structural skeleton and a film coated on the structural skeleton.
For example, the film is made of polyamide or polyurethane based thermo-elastic materials.
For example, the membrane is made of one or more of PTFE, ePTFE, PU, TPU and TPE.
For example, the Shore hardness of the polyamide or polyurethane thermo-elastic material is 30 HD-45 HD, and the thickness of the film is 0.05-0.15 mm.
For example, the structural framework is an expandable mesh.
For example, the contoured skeleton is made of a superelastic nickel-titanium alloy.
For example, the structural framework is formed by weaving and welding super-elastic nickel-titanium alloy wires; or the structural framework is formed by laser engraving of the super-elastic nickel-titanium alloy pipe body.
For example, the structural framework is formed by laser cutting and thermally expanding a metal pipe with a shape memory effect; or the configuration framework is woven by metal wires with shape memory effect; or the structural framework is formed by injection molding of high-elasticity high polymer materials; or the structural framework is formed by injection molding of high-elasticity high polymer materials.
As shown in fig. 1, 3 and 4, the distal end of the funnel-shaped tip 2b is an opening 2b as shown in fig. 1, 3 and 4 2 To weave and attach the inner wall of the blood vessel; the proximal end of the funnel-shaped tip 2b is a thin neck 2b 1 Neck portion 2b 1 And an opening 2b 2 Between which is a conical expansion part 2b 3 Thereby ensuring that the thrombus is more quickly passed into the aspiration tube 2a via the funnel-shaped tip 2b, thereby removing the thrombus more quickly.
For example, the suction tube 2a is made of nylon or polyurethane or PEBAX (block polyether amide).
Referring to fig. 2 and 5, in order to illustrate a thrombus remover 3' according to a second embodiment of the present application, the thrombus remover 3 according to the first embodiment of the present application is different from the thrombus remover 3 according to the first embodiment of the present application only in terms of the traction assembly, specifically as follows:
in the thrombus remover 3 'of the second embodiment of the present application, the traction assembly 33' does not include a telescopic screw rod and an operation nut, which is only a fishing line reel, correspondingly, the proximal end of the traction rope 32 is connected to the fishing line reel, and the fishing line reel is disposed on the housing 20, so that the fishing line reel can reel the traction rope 32 under operation or release the reeled traction rope 32, of course, the fishing line reel is disposed on the rotatable driving assembly 40 or the fishing line reel is disposed on the housing 20 and the rotatable driving assembly 40 according to practical situations, so that the thrombus remover is not limited thereto. Specifically, the proximal end of the hauling cable 32 is inserted into the rotation tube 41 and extends out of the housing 20 through the rotation tube 41, and the fishing line reel is located outside the housing 20, so as to operate the fishing line reel, and the structure is more compact and reasonable, but not limited thereto.
The reel is an important component of the fishing rod and is a line arranging device for carrying out line paying-out and winding-up operations of the fishing line, and the applicant has referenced the reel to the present application for pulling the pulling rope 32. The line wheel belongs to the prior art and is not described in detail here.
Except for the above differences, the first embodiment is the same as the first embodiment, and thus will not be described in detail herein.
In the drawings, the direction indicated by the arrow L is parallel to the axial direction of the rotary pipe 41, the axial direction of the driving shaft 43, and the axial direction of the intermediate shaft 471, but is not limited thereto.
The procedure for using the thrombus remover 3 of the first embodiment of the present application is described below with reference to fig. 1, 3, 4 and 6:
firstly, establishing a conveying channel through a catheter sheath 4 according to the determined thrombus taking position;
secondly, operating the thrombus-aspiration assembly 2 to be inserted into the catheter sheath 4, and enabling the expandable mesh 10 in the contracted state to pass through the thrombus 6 and be placed beside the thrombus 6, wherein the funnel-shaped tip 2b is in an initial state, namely, is pressed and held in the lumen of the catheter sheath 4, then operating the catheter sheath 4 to move towards the direction of exiting the blood vessel, enabling the funnel-shaped tip 2b to be separated from the pressing and holding of the catheter sheath 4, and enabling the funnel-shaped tip 2b to expand under the action of potential energy of recovery to switch the expanded state and be positioned beside the proximal end of the thrombus 6;
And a third step of: connecting the aspirator to the aspiration orifice of the luer connector 2c, so that the aspirator is screwed and connected to the aspiration orifice, and the reliable sealing of the connection part is ensured;
fourth step: when the expandable mesh 10 reaches a preset position, the proximal end of the telescopic screw rod 331 is pulled outwards for a certain distance, at this time, the traction rope 32 pulls the expandable mesh 10 in a contracted state to be elastically deformed to an expanded state, an expanded rotary cutting part is formed, at this time, the operation nut 332 is rotated, the position of the telescopic screw rod 331 is fixed, and the operation nut 332 is further rotated according to the size of a blood vessel to control the diameter of the expandable mesh 10;
fifth step: when the thrombus taking operation is performed, the rotary driver 42 is started to rotate the expandable mesh 10 and the rotary tube 41, meanwhile, according to the actual situation, the steering of the rotary tube 41 can be adjusted by operating the steering assembly 47, and the rotating speed of the rotary tube 41 can be adjusted by operating the speed adjusting assembly 46 so as to adapt to different thrombus 6 (for example, a mode that old thrombus uses a high rotating speed or/and continuously changes the rotating direction, and a new thrombus uses a low rotating speed mode), thereby rapidly and stably removing the thrombus 6.
Sixth step: simultaneously opening the aspirator, sucking and removing thrombus 6 separated from and broken by the expandable mesh 10 in the blood vessel 5, and thoroughly removing the thrombus in the blood vessel 5 after waiting for a certain time;
Seventh step: after the suction is completed, the operating nut 332 is unscrewed, so that the expandable mesh 10 in the expanded state is restored to the contracted state;
eighth step: the thrombus-morcellating device 1 and the thrombus-aspiration assembly 2 are withdrawn from the body along the lumen of the blood vessel.
The procedure for using the thrombus remover 3' according to the second embodiment of the present application is described below with reference to FIGS. 2 and 5:
firstly, establishing a conveying channel through a catheter sheath 4 according to the determined thrombus taking position;
secondly, operating the thrombus-aspiration assembly 2 to be inserted into the catheter sheath 4, and enabling the expandable mesh 10 in the contracted state to pass through the thrombus 6 and be placed beside the thrombus 6, wherein the funnel-shaped tip 2b is in an initial state, namely, is pressed and held in the lumen of the catheter sheath 4, then operating the catheter sheath 4 to move towards the direction of exiting the blood vessel, enabling the funnel-shaped tip 2b to be separated from the pressing and holding of the catheter sheath 4, and enabling the funnel-shaped tip 2b to expand under the action of potential energy of recovery to switch the expanding state and be positioned beside the proximal end of the thrombus;
and a third step of: connecting the aspirator to the aspiration orifice of the luer connector 2c, so that the aspirator is screwed and connected to the aspiration orifice, and the reliable sealing of the connection part is ensured;
fourth step: when the expandable net 10 reaches a preset position, the fishing line wheel 33 ' is rotated to roll the traction rope 32, so that the expandable net 10 in a contracted state is pulled to elastically deform to an expanded state, an expanded rotary cutting part is formed, the fishing line wheel 33 ' is further rotated according to the size of a blood vessel to control the diameter of the expandable net, and then the rotation of the fishing line wheel 33 ' is locked;
Fifth step: when the thrombus taking operation is performed, the rotary driver 42 is started to rotate the expandable mesh 10 and the rotary tube 41, meanwhile, according to the actual situation, the steering of the rotary tube 41 can be adjusted by operating the steering assembly 47, and the rotating speed of the rotary tube 41 can be adjusted by operating the speed adjusting assembly 46 so as to adapt to different thrombus 6 (for example, a mode that old thrombus uses a high rotating speed or/and continuously changes the rotating direction, and a new thrombus uses a low rotating speed mode), thereby rapidly and stably removing the thrombus 6.
Sixth step: simultaneously opening the aspirator, sucking and removing thrombus 6 separated from and broken by the expandable mesh 10 in the vascular cavity, and thoroughly removing the thrombus 6 in the blood vessel 5 after waiting for a certain time;
seventh step: after the suction is completed, the reel 33' is rotated to release the reeled hauling rope 32, so that the expandable mesh 10 in the expanded state is restored to the contracted state;
eighth step: the thrombus-morcellating device 1 and the thrombus-aspiration assembly 2 are withdrawn from the body along the lumen of the blood vessel.
Compared with the prior art, in the thrombus removing device 1 of the embodiment of the present application, the expandable mesh 10 can be switched to the contracted state by operating the expansion driving assembly 30 so as to extend beside the thrombus on the blood vessel, and then switched to the expanded state, and the expandable mesh 10 in the expanded state can be driven to rotate by operating the rotation driving assembly 40 so as to rapidly rub and remove the thrombus adhered to the inner wall of the blood vessel, thereby improving the efficiency of thrombus removing; moreover, since the expandable mesh 10 can deform by itself when encountering a large resistance, the expansion size of the expandable mesh 10 can be controlled by operating the expansion driving assembly 30, so that damage to the inner wall of a blood vessel can be avoided and the expandable mesh is suitable for blood vessels with different sizes; therefore, the thrombus removing and crushing device 1 of the embodiment of the application has the advantages of simple structure, convenient operation, easy thrombus crushing and suitability for blood vessels with different sizes. In addition, since the thrombus remover 3 of the embodiment of the present application includes the thrombus removal device 1 of the embodiment of the present application, the thrombus remover 3 of the embodiment of the present application has a simple structure, is convenient to operate, is easy to break a thrombus, and is suitable for blood vessels of different sizes.
The foregoing disclosure is merely illustrative of the preferred embodiments of the present application and is not intended to limit the scope of the claims herein so that equivalent variations to the scope of the claims herein will fall within the scope of the claims.
Claims (14)
1. A thrombus morcellating device, comprising:
an inflatable net;
a housing positioned adjacent a proximal end of the expandable mesh;
an inflation drive assembly disposed within said housing, said inflation drive assembly being coupled to a distal end of said inflatable mesh, said inflation drive assembly being operable to urge said distal end of said inflatable mesh to slide closer to a proximal end of said inflatable mesh to switch said inflatable mesh to an inflated state, said inflation drive assembly being further operable to urge said distal end of said inflatable mesh to slide farther from said proximal end of said inflatable mesh to switch said inflatable mesh to a deflated state; and
and the rotation driving assembly is arranged on the shell and connected with the proximal end of the expandable mesh, and can drive the proximal end of the expandable mesh to rotate.
2. The thrombus morcellating device of claim 1, wherein the expansion drive assembly comprises:
A seeker disposed at a distal end of the expandable mesh;
a pull cord having a distal end connected to the seeker, a proximal end of the pull cord extending from a proximal end of the expandable mesh beyond the expandable mesh; and
the traction assembly is arranged on the shell and/or the rotation driving assembly, the proximal end of the traction rope is connected with the output end of the traction assembly, the traction rope can drive the distal end of the expandable mesh to slide close to the proximal end of the expandable mesh in a linkage way under the driving of the traction assembly, and the expandable mesh has a constant trend of keeping a contracted state.
3. The thrombi morcellating device of claim 2, wherein the traction assembly comprises:
the telescopic screw rod can slide along the axial direction of the telescopic screw rod, the telescopic screw rod is arranged on the shell and/or the rotation driving assembly, and the distal end of the telescopic screw rod is connected with the proximal end of the traction rope; and
and the operation nut is assembled on the telescopic screw rod and is rotatably arranged on the shell and/or the rotation driving assembly.
4. A thrombus removal device as in claim 3 wherein said rotational drive assembly comprises a rotational tube rotatably disposed in said housing, said distal end of said rotational tube extending beyond said housing and being connected to said proximal end of said expandable mesh, and a rotational driver disposed in said housing, said rotational tube in driving connection with said output end of said rotational driver, said telescoping lead screw passing through said rotational tube, said proximal end of said pull cord passing through said rotational tube and being connected to said telescoping lead screw, said operating nut rotatably disposed in said rotational tube.
5. The thrombi shedding device of claim 4, wherein the rotational drive assembly further comprises a drive shaft, a drive gear and a driven gear, the drive shaft being disposed parallel to the rotational tube, the driven gear being fixedly connected to the rotational tube, the drive shaft being fixedly connected to an output shaft of the rotational drive, the driven gear being drivingly connected to the drive gear.
6. The thrombi shedding device of claim 5, wherein the rotational drive assembly further comprises a speed regulating assembly, the driving gear is arranged on the driving shaft in a plurality of different sizes, the speed regulating assembly is arranged on the rotational driver and/or the driving shaft, and the speed regulating assembly can drive the driving gear with different sizes to be in transmission connection with the driven gear under operation.
7. The thrombi shedding device of claim 6, wherein the speed regulation assembly comprises:
the sliding piece is arranged on the shell in a sliding manner along the axial direction of the driving shaft;
one end of the elastic piece is connected with the rotary driver and/or the driving shaft, and the other end of the elastic piece is connected with the sliding piece; and
the operating rod, its one end is fixed in rotation driver and/or the driving shaft, the other end of operating rod stretches out the casing, the operating rod can be under the operation order the driving shaft to follow the axial direction of driving shaft slides, and can order simultaneously the driving shaft translation be close to or keep away from the casing.
8. The thrombi shedding device of claim 5, wherein the rotational drive assembly further comprises a steering assembly disposed between the drive shaft and the rotational tube, the drive gear being drivingly connected to the driven gear by the steering assembly, the steering assembly operable to switch the drive gear and the driven gear to either co-rotational or counter-rotational.
9. The thrombi shedding device of claim 8, wherein the steering assembly further comprises an intermediate shaft, a counter gear and a co-directional gear set, the intermediate shaft is arranged in parallel with the rotating tube, the counter gear is fixed on the intermediate shaft, the co-directional gear set is arranged on the intermediate shaft, the intermediate shaft is slidingly arranged on the shell along the axial direction of the intermediate shaft, and the intermediate shaft can be used for driving the counter gear and the co-directional gear set to slide along the axial direction of the intermediate shaft under operation.
10. The thrombi shedding device of claim 8, wherein the co-rotating gear set further comprises a flange, a first steering gear and a second steering gear, the flange being fixed to the intermediate shaft, the first steering gear and the second steering gear each being rotatably disposed on the flange and engaged with each other.
11. The thrombi shedding device according to claim 9, wherein a first limit portion and a second limit portion are provided on the intermediate shaft at intervals, the first limit portion abuts against the housing when the counter gear slides to engage with the driven gear, and the second limit portion abuts against the housing when the co-rotating gear set slides to engage with the driven gear.
12. A thrombus remover, comprising:
a thrombi-desquamation device according to any one of claims 1-11; and
and the thrombus sucking assembly is used for sucking out crushed thrombus from the thrombus crushing device and is assembled and connected with the thrombus crushing device.
13. A thrombus remover, comprising:
a thrombi-desquamation device according to any one of claims 4-11; and
the thrombus sucking component is used for sucking out crushed thrombus of the thrombus crushing device and comprises a sucking tube, a funnel-shaped tip and a luer connector, wherein the sucking tube is positioned outside the shell and sleeved on the rotating tube, the sucking tube is positioned between the expandable mesh and the shell along the axial direction of the rotating tube, the funnel-shaped tip is arranged at the far end of the sucking tube and is communicated with the sucking tube, and the luer connector is arranged at the near end of the sucking tube and is communicated with the sucking tube.
14. The thrombus remover as in claim 13 wherein the funnel-shaped tip is comprised of a contoured skeleton and a membrane over the contoured skeleton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311591363.2A CN117562622A (en) | 2023-11-24 | 2023-11-24 | Thrombus removing and crushing device and thrombus remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311591363.2A CN117562622A (en) | 2023-11-24 | 2023-11-24 | Thrombus removing and crushing device and thrombus remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117562622A true CN117562622A (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311591363.2A Pending CN117562622A (en) | 2023-11-24 | 2023-11-24 | Thrombus removing and crushing device and thrombus remover |
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| Country | Link |
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| CN (1) | CN117562622A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5030201A (en) * | 1989-11-24 | 1991-07-09 | Aubrey Palestrant | Expandable atherectomy catheter device |
| CN112494104A (en) * | 2020-12-15 | 2021-03-16 | 上海融脉医疗科技有限公司 | Be used for endovascular thrombus suction catheter device and basket subassembly thereof |
| CN115998377A (en) * | 2022-12-26 | 2023-04-25 | 先健科技(深圳)有限公司 | Excision device |
| CN116077137A (en) * | 2022-08-19 | 2023-05-09 | 上海暖阳医疗器械有限公司 | Separated type bolt suction device |
-
2023
- 2023-11-24 CN CN202311591363.2A patent/CN117562622A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5030201A (en) * | 1989-11-24 | 1991-07-09 | Aubrey Palestrant | Expandable atherectomy catheter device |
| CN112494104A (en) * | 2020-12-15 | 2021-03-16 | 上海融脉医疗科技有限公司 | Be used for endovascular thrombus suction catheter device and basket subassembly thereof |
| CN116077137A (en) * | 2022-08-19 | 2023-05-09 | 上海暖阳医疗器械有限公司 | Separated type bolt suction device |
| CN115998377A (en) * | 2022-12-26 | 2023-04-25 | 先健科技(深圳)有限公司 | Excision device |
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