CN114916996A - Thrombus removing assembly - Google Patents
Thrombus removing assembly Download PDFInfo
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- CN114916996A CN114916996A CN202111451663.1A CN202111451663A CN114916996A CN 114916996 A CN114916996 A CN 114916996A CN 202111451663 A CN202111451663 A CN 202111451663A CN 114916996 A CN114916996 A CN 114916996A
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- guide wire
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 58
- 210000003128 head Anatomy 0.000 claims abstract description 17
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 15
- 210000005077 saccule Anatomy 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 230000017531 blood circulation Effects 0.000 claims description 6
- 238000013151 thrombectomy Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 210000000709 aorta Anatomy 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 206010008088 Cerebral artery embolism Diseases 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- 102000009123 Fibrin Human genes 0.000 description 1
- 108010073385 Fibrin Proteins 0.000 description 1
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 206010028851 Necrosis Diseases 0.000 description 1
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 206010047141 Vasodilatation Diseases 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000002651 drug therapy Methods 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 239000003527 fibrinolytic agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 201000010849 intracranial embolism Diseases 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 210000000265 leukocyte Anatomy 0.000 description 1
- 208000010125 myocardial infarction Diseases 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 208000010110 spontaneous platelet aggregation Diseases 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000002537 thrombolytic effect Effects 0.000 description 1
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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
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
-
- 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
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to the field of medical instruments, and discloses a thrombus clearing assembly which is suitable for clearing thrombus in an aorta, and can quickly clear thrombus only by placing a guide catheter in operation; the cutter component, the conical cutter head and the guide wire saccule can completely remove thrombus, so that thrombus in blood vessels can be completely removed, and residual thrombus is avoided.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a thrombus removal assembly.
Background
Thrombosis is a common disease in clinic, and is a small lump formed on the surface of a blood flow stripped or repaired part in the blood vessel of a cardiovascular system. In the variable fluid-dependent type, the thrombus is composed of insoluble fibrin, deposited platelets, accumulated white blood cells and entrapped red blood cells. Generally, the thrombus harm has the following main points: 1. thrombus blocks the vessel lumen, causing the blockage of distal blood reflux, and causing the symptoms of obvious swelling, severe pain, superficial skin vasodilatation and the like of distal limbs. 2. The thrombus can be dropped out to block the blood vessel along with the blood flow, more serious complications such as pulmonary embolism, cerebral embolism, myocardial infarction and the like, and larger embolus can completely block the blood supply vessel of important organs, so that organ ischemia, hypoxia and even death of patients are caused. The existing methods for removing thrombus in blood vessels are more, and can be divided into medicament treatment and operation treatment according to different treatment modes. The drug therapy may be selected from thrombolytic drugs, anticoagulant drugs, and platelet aggregation inhibiting drugs. The operation treatment also comprises the traditional operation incision and thrombus removal treatment and the minimally invasive operation treatment, and the minimally invasive operation treatment comprises intravascular thrombolysis, intravascular thrombus suction and the like.
The existing thrombus remover in the vascular lumen thrombus suction operation in the aorta vessel has a plurality of defects, for example, the existing thrombus removing equipment can generate 30-50% of residues when thrombus is removed, and when a catheter enters a blood clot, countless fragments of the existing equipment can be left in the blood vessel, so that the blood flowing speed is reduced, and tissue necrosis is caused. Therefore, there is a need for a thrombus removal assembly that can completely remove thrombus from a large blood vessel, such as a femoral artery.
Disclosure of Invention
In order to overcome the problem of residue in the existing thrombus removal operation, the invention provides a thrombus removal assembly.
A thrombus removal assembly, comprising: a guide catheter which can be placed in the blood vessel of a patient and a hollow guide wire which is sleeved in the guide catheter; the hollow guide wire can slide in the guide catheter, and a rotatable conical cutter head is arranged at the front end of the hollow guide wire; the front end of the guide catheter and the hollow guide wire are respectively provided with an expandable saccule for blocking blood flow at two sides of thrombus; the hollow guide wire is provided with a cutter component which moves along the axial direction of the hollow guide wire and can carry out rotary cutting on thrombus on a vessel wall; the cutter component is magnetically connected with the expandable saccule at the front end of the guide catheter.
Preferably, the cutter assembly comprises: a rotary cutter cylinder for rotary cutting thrombus on the vascular wall and a driving cylinder for driving the rotary cutter cylinder to advance; a rolling mechanism for rotating the rotary cutter cylinder is correspondingly arranged between the rotary cutter cylinder and the driving cylinder; the driving cylinder drives the rotary cutter cylinder to move along the hollow guide wire.
Preferably, the inner surface and the outer surface of the driving cylinder are both provided with thread grooves arranged around the axis of the driving cylinder, and the surface of the hollow guide wire is provided with threads meshed with the thread grooves; two through holes for communicating the thread grooves on the inner surface and the outer surface of the driving cylinder are respectively arranged along the two sides of the driving cylinder; and a plurality of balls capable of rolling simultaneously along the same direction are uniformly arranged in the thread groove.
Preferably, in order to realize that a plurality of balls roll in the thread groove along one direction at the same time; a rotatable coating cylinder which coats the driving cylinder is arranged on the outer surface of the driving cylinder; the movement of the balls in the thread groove on the outer surface of the driving cylinder is realized by utilizing the rotation of the cladding cylinder, so that the balls in the thread groove on the inner surface of the driving cylinder move.
Preferably, a coating cylinder which can coat the driving cylinder and can rotate is arranged on the outer surface of the driving cylinder; two sides of the driving cylinder are provided with annular baffles, and the annular baffles at the two sides are provided with belt mechanisms for the rotating stroke of the wrapping cylinder; the belt mechanism comprises a rotatable rotating shaft arranged on the annular baffles on the two sides and a belt sequentially wrapping the rotating shaft and the wrapping cylinder.
Preferably, a plurality of double-link mechanisms are uniformly arranged on the surface of the rotary cutter cylinder around the axis of the rotary cutter cylinder; the double-connecting-rod mechanism is formed by hinging two rod bodies with vertexes, the lower end of one rod body is provided with a sliding block hinged with the rod body, and the lower end of the other rod body is hinged with the surface of the rotary cutter barrel; the sliding block can move on the surface of the rotary cutter barrel along the axial direction of the rotary cutter barrel; and a push rod for sliding movement is arranged on one side of the sliding block.
Preferably, the other rod body is provided with a spiral blade with a radian at the vertex; and a groove for the sliding block to move is formed in the surface of the rotary cutter cylinder.
Preferably, a rotating ring capable of rotating around the axis of the driving cylinder is arranged on one side of the driving cylinder, and the push rod is connected with the rotating ring; a groove engaged and clamped with the rotating ring is arranged on one side of the rotary cutter cylinder; the rolling mechanism is a rotatable rotating shaft arranged on one side of the driving cylinder; a mesh tooth for rotating the rotating ring is correspondingly arranged between the rotatable rotating shaft and the rotating ring.
Preferably, the conical cutter head is rotatably connected with the hollow guide wire, and a rotating shaft for rotating the conical cutter head is arranged at the joint of the inside of the hollow guide wire and the conical cutter head.
Preferably, the balloon at the front end of the guide catheter is a balloon which is reversely curled and expanded, the balloon on the hollow guide wire is a balloon which is radially expanded, and a metal wire for moving one end of the balloon is arranged along one end of the balloon.
Preferably, in order to realize the rotation of the rotating shaft; one end of the rotating shaft is connected with a rotatable threaded conveying ring, and a through hole for recovering thrombus is arranged on the hollow guide wire.
Preferably, the guide catheter is provided with a through hole for pushing the hollow guide wire by a doctor; the length of the hollow guidewire is greater than the length of the guide catheter; the rear end of the guide catheter and the rear end of the hollow guide wire are both communicated in a negative pressure handle.
Preferably, electric winding drums capable of automatically winding the metal wires are respectively arranged in the negative pressure handles.
Preferably, a plurality of rotating motors for rotating the thread conveying ring are arranged in the negative pressure handle, and a sliding rail for displacing the rotating motors is arranged in the negative pressure handle; a spring for returning the rotating motor to an initial position is arranged between the sliding rail and the negative pressure handle, and the rotating motor and the electric winding drum are in electric signal transmission with the control panel; the negative pressure handle is internally provided with a battery component for supplying power to each rotating motor and each electric winding drum.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the invention is suitable for removing the aortic thrombus, and the thrombus removing work can be quickly carried out only by placing the guide catheter during operation; the cutter component, the conical cutter head and the guide wire saccule can completely remove thrombus, so that thrombus in blood vessels can be completely removed, and residual thrombus is avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a guidewire of the present invention;
FIG. 3 is a schematic view showing an internal structure of a driving cylinder according to the present invention;
FIG. 4 is a schematic view of the overall structure of the driving cylinder according to the present invention;
fig. 5 is a schematic structural view of the rotary cutter drum of the present invention;
FIG. 6 is a schematic cross-sectional view of a cutter assembly according to the present invention;
FIG. 7 is a schematic view of the structure of the leading end of the guidewire of the present invention;
FIG. 8 is a schematic view of the internal structure of the negative pressure handle of the present invention;
in the figure, 1, balloon; 2. a cutter assembly; 3. a hollow guide wire; 4. a guide catheter; 5. a negative pressure handle; 6. a conical cutter head; 101. reverse recoil of the inflated balloon; 102. a radially-expanded balloon; 201. a drive cylinder; 202. a rotary cutter drum; 301. a thread; 20101. annular baffles at two sides of the driving cylinder; 20102. a threaded groove; 203. a ball bearing; 204. a wrapping drum; 205. A rotating shaft; 206. an annular projection; 20201. a short bar; 20202. a slider; 20203. a push rod; 20204. a helical blade; 7. a threaded conveying ring; 20205. a groove engaged and clamped with the rotating ring; 207. a rotating ring; 302. a through hole for recovering thrombus; 501. an electric reel; 502. A rotating electric machine; 503. a spring; 504. a battery assembly; 8. a wire.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In particular embodiments, as shown in fig. 1 and 2, a thrombectomy assembly, comprising: a guide catheter 4 which can be placed in the blood vessel of a patient, and a hollow guide wire 3 which is sleeved in the guide catheter 4; the hollow guide wire 3 can slide in the guide catheter 4, and the front end of the hollow guide wire 3 is provided with a rotatable conical cutter head 6; the front end of the guide catheter 4 and the hollow guide wire 3 are respectively provided with an expandable saccule 1 for blocking the blood flow at two sides of thrombus; the hollow guide wire 3 is provided with a cutter component 2 which moves along the axial direction of the hollow guide wire 3 and can carry out rotary cutting on thrombus on a vessel wall; the cutter component 2 is magnetically connected with the expandable saccule 1 at the front end of the guide catheter 4.
It should be noted that: when in use, the guiding catheter 4 is placed into the blood vessel along one side of the thrombus in advance, and then the hollow guide wire 3 is placed into the guiding catheter 4; the hollow guide wire 3 is guided to the other side of the thrombus by a conical cutter head 6 at the front end of the hollow guide wire 3; further respectively opening the saccule 1 at the front end of the guide catheter 4 and the saccule 1 at the front end of the hollow guide wire 3 to realize the blood flow separation at the two sides of the thrombus; then the cutter component 2 is disconnected with the balloon 1 at the front end of the guide catheter 4, and stubborn thrombus on the vessel wall is removed along the hollow guide wire 3; after the removal, the hollow guide wire 3 is withdrawn, and the balloon 1 at the tip of the hollow guide wire 3 recovers the thrombus remaining in the blood vessel into the guide catheter 4.
As shown with reference to FIG. 2; the cutter assembly 2 includes: a rotary cutter cylinder 202 for rotary cutting thrombus on the vessel wall, and a driving cylinder 201 for driving the rotary cutter cylinder 202 to advance; a rolling mechanism for rotating the rotary cutter cylinder 202 is correspondingly arranged between the rotary cutter cylinder 202 and the driving cylinder 201; the driving cylinder 201 drives the rotary cutter cylinder 202 to move along the hollow guide wire 3.
It should be noted that: the inner wall of the rotary cutter cylinder 202 is a smooth surface; when the rotary cutting tool is used, the driving cylinder 201 is used for moving the rotary cutting tool cylinder 202 on the guide wire, and the rolling mechanism arranged between the rotary cutting tool cylinder 202 and the driving cylinder 201 can avoid the movement interference between the rotary cutting tool cylinder 202 and the driving cylinder 201, so that the rotary cutting tool cylinder 202 can rotate at any speed.
Refer to fig. 3, 4; the inner surface and the outer surface of the driving cylinder 201 are both provided with a thread groove 20102 arranged around the axis of the driving cylinder 201, and the surface of the hollow guide wire 3 is provided with a thread 301 engaged with the thread groove 20102; two through holes for communicating the threaded grooves 20102 on the inner surface and the outer surface of the driving cylinder 201 are respectively arranged along the two sides of the driving cylinder 201; a plurality of balls 203 which can roll simultaneously along the same direction are uniformly arranged in the thread groove 20102; a rotatable coating cylinder which coats the driving cylinder 201 is arranged on the outer surface of the driving cylinder 201; two sides of the driving cylinder 201 are provided with annular baffles, and the annular baffles at the two sides are provided with belt mechanisms for the rotating stroke of the wrapping cylinder 204; the belt mechanism comprises a rotatable rotating shaft 205 arranged on the annular baffles at two sides and a belt which sequentially wraps the rotating shaft 205 and the wrapping drum 204.
It should be noted that: when in use, the rotatable wrapping cylinder 204 wrapped on the outer surface of the driving cylinder 201 enables the plurality of balls 203 on the inner surface and the outer surface of the driving cylinder 201 to move along the thread groove 20102; and a plurality of movable balls 203 on the inner surface of the driving barrel 201 are engaged with the threads 301 on the surface of the guide wire to form an engagement transmission process, so that the driving barrel 201 moves along the guide wire.
As shown with reference to FIG. 5; a plurality of double-link mechanisms are uniformly arranged on the surface of the rotary cutter cylinder 202 around the axis of the rotary cutter cylinder 202; the double-connecting-rod mechanism is two rod bodies hinged at the vertexes, the lower end of one rod body is provided with a sliding block 20202 hinged with the lower end of the other rod body, and the lower end of the other rod body is hinged with the surface of the rotary cutter cylinder 202; the slide block 20202 can move on the surface of the rotary cutter cylinder 202 along the axial direction of the rotary cutter cylinder 202; a push rod 20203 for sliding movement is arranged on one side of the slide block 20202; the other rod body is provided with a helical blade 20204 with a radian at the vertex; a groove for moving the slider 20202 is formed on the surface of the rotary cutter cylinder 202.
It should be noted that: after the rotary-cut knife cylinder 202 reaches one side of the thrombus, the push rod 20203 pushes the slide block 20202 to move, so that the connection point between the two rod bodies is arched, and after the connection point between the two rod bodies contacts the blood vessel wall, the rotary-cut knife cylinder 202 rotates to cut the stubborn thrombus on the blood vessel wall; the helical blade 20204 prevents the rotary-cut knife cylinder 202 from damaging the vessel wall during rotation.
Refer to fig. 5, 6, 7;
a rotating ring 207 which can rotate around the axis of the driving cylinder 201 is arranged on one side of the driving cylinder 201, and the push rod 20203 is connected with the rotating ring 207; a groove engaged and clamped with the rotating ring 207 is arranged on one side of the rotary cutter cylinder 202; the rolling mechanism is a rotatable rotating shaft 205 arranged on one side of the driving cylinder 201; a gear for rotating the rotating ring 207 is correspondingly arranged between the rotating shaft 205 and the rotating ring 207.
It should be noted that: an annular bulge 206 for rotating the rotating ring 207 is arranged on one side of the driving cylinder 201, and the rotating shaft 205 can be rotated to enable the rotating ring 207 to rotate around the axis of the driving cylinder 201; when the driving cylinder 201 and the rotary cutter cylinder 202 are both located at the initial position of the guide wire, the driving cylinder 201 moves, and the rotary cutter cylinder 202 does not rotate; when the driving cylinder 201 moves to the position where the rotating ring 207 on the surface of the driving cylinder 201 is clamped with the groove on the surface of the rotary cutter cylinder 202, the two rod bodies on the surface of the rotary cutter guide cylinder are arched, and the rotating ring 207 drives the rotary cutter guide cylinder to rotate.
As shown with reference to FIG. 8; the conical cutter head 6 is rotatably connected with the hollow guide wire 3, and a rotating shaft 205 for rotating the conical cutter head 6 is arranged at the joint of the hollow guide wire 3 and the conical cutter head 6.
It should be noted that: when in use, the hollow guide wire 3 passes through thrombus by using the rotation of the conical cutter head 6.
As shown with reference to FIG. 2; the balloon 1 at the front end of the guide catheter 4 is a balloon 101 which is reversely rewound and expanded, the balloon 1 on the hollow guide wire 3 is a balloon 102 which is radially expanded, and a wire 8 for moving one end of the balloon 1 is arranged along one end of the balloon 1.
It should be noted that: when in use, the saccule 102 expanded radially on the hollow guide wire 3 can effectively recycle residual thrombus into the guide catheter 4
As shown with reference to FIG. 2; one end of the rotating shaft 205 is connected with a rotatable threaded conveying ring 7, and a through hole 302 for recovering thrombus is arranged on the hollow guide wire 3.
It is to be noted that; the hollow guide wire 3 and the guide catheter 4 are uniformly provided with clamps for preventing the thread conveying ring 7 from shaking, and the thread conveying ring 7 can realize the rotation of the rotating shaft 205.
Referring to fig. 1-8, the guiding catheter 4 is provided with a through hole for the physician to push the hollow guide wire 3; the length of the hollow guide wire 3 is greater than that of the guide catheter 4; the rear end of the guide catheter 4 and the rear end of the hollow guide wire 3 are both communicated in a negative pressure handle 5; an electric winding drum 501 capable of automatically winding a metal wire 8 and a thread conveying ring 7 is arranged in the negative pressure handle 5; a plurality of rotating motors 502 for rotating the thread conveying ring 7 are arranged in the negative pressure handle 5, and a slide rail for displacing the rotating motors 502 is arranged in the negative pressure handle 5; a spring 503 for returning the rotating motor 502 to the initial position is arranged between the sliding rail and the negative pressure handle 5, and the rotating motors 502 and the electric drums 501 are in electric signal transmission with the control panel; a battery pack 504 for supplying power to the rotating electric machines 502 and the electric reels 501 is provided in the negative pressure handle 5.
It is to be noted that; when the rotary cutting tool is used, the rotary motor 502 can enable the thread conveying ring 7 to start to rotate, the sliding rail at the lower end of the rotary motor 502 can provide the movement stroke of the thread conveying ring 7 in the guide conduit 4, and the spring 503 can enable the rotary motor 502 and the thread conveying ring 7 to return to the initial position after the rotary cutting tool cylinder 202 finishes working; after the guide catheter 4 is placed in a blood vessel, the doctor operates the control panel to start the rotary motors 502 and the electric reel 501, thereby operating the mechanisms.
The circuits and controls involved in the present invention are prior art and will not be described in detail herein.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A thrombus removal assembly, comprising: a guide catheter which can be placed in the blood vessel of a patient and a hollow guide wire which is sleeved in the guide catheter; the hollow guide wire can slide in the guide catheter, and a rotatable conical cutter head is arranged at the front end of the hollow guide wire; the front end of the guide catheter and the hollow guide wire are respectively provided with an expandable saccule for blocking blood flow at two sides of thrombus; the hollow guide wire is provided with a cutter component which moves along the axial direction of the hollow guide wire and can carry out rotary cutting on thrombus on a vessel wall; the cutter component is magnetically connected with the expandable saccule at the front end of the guide catheter.
2. A thrombectomy assembly according to claim 1, wherein said cutter assembly comprises: a rotary cutter cylinder for rotary cutting thrombus on the vessel wall and a driving cylinder for driving the rotary cutter cylinder to advance; a rolling mechanism for rotating the rotary cutter cylinder is correspondingly arranged between the rotary cutter cylinder and the driving cylinder; the driving cylinder drives the rotary cutter cylinder to move along the hollow guide wire.
3. The thrombectomy assembly of claim 2, wherein the inner and outer surfaces of the driving cylinder are provided with threaded grooves around the axis of the driving cylinder, and the surface of the hollow guide wire is provided with threads engaged with the threaded grooves; two through holes for communicating the thread grooves on the inner surface and the outer surface of the driving cylinder are respectively arranged along the two sides of the driving cylinder; and a plurality of balls capable of rolling simultaneously along the same direction are uniformly arranged in the thread groove.
4. The thrombectomy assembly of claim 2, wherein a plurality of dual-linkage mechanisms are disposed uniformly about the axis of the rotary cutter cylinder on the surface of the rotary cutter cylinder; the double-connecting-rod mechanism is formed by hinging two rod bodies with vertexes, the lower end of one rod body is provided with a sliding block hinged with the rod body, and the lower end of the other rod body is hinged with the surface of the rotary cutter barrel; the sliding block can move on the surface of the rotary cutter barrel along the axial direction of the rotary cutter barrel; and a push rod for sliding movement is arranged on one side of the sliding block.
5. A thrombectomy assembly according to claim 4, wherein a rotating ring is provided at one side of the driving cylinder and can rotate around the axis of the driving cylinder, the push rod is connected with the rotating ring; a groove engaged and clamped with the rotating ring is arranged on one side of the rotary cutter cylinder; the rolling mechanism is a rotatable rotating shaft arranged on one side of the driving cylinder; a mesh tooth for rotating the rotating ring is correspondingly arranged between the rotatable rotating shaft and the rotating ring.
6. The thrombus removal assembly of claim 1, wherein the conical cutter head is rotatably connected to the hollow guide wire, and a rotating shaft for rotating the conical cutter head is provided at the connection point of the conical cutter head and the hollow guide wire.
7. A thrombus removal assembly according to claim 1, wherein the balloon at the leading end of the guide catheter is a reverse recoil expansion balloon, the balloon on the hollow guide wire is a radial expansion balloon, and a wire for moving one end of the balloon is provided along one end of the balloon.
8. The thrombus removal assembly of claim 6, wherein a rotatable threaded delivery ring is attached to each end of the shaft, and wherein the threaded delivery rings are respectively connected to a negative pressure handle via a guide catheter and a guide wire.
9. A thrombectomy assembly according to claim 8, wherein electric reels are disposed in said negative pressure handles for automatically reeling in wires.
10. The thrombus removal assembly of claim 8, wherein a plurality of rotary motors are provided in the negative pressure handle for rotating the threaded conveyor ring, and a slide rail is provided in the negative pressure handle for displacing the rotary motors; a spring for returning the rotating motor to an initial position is arranged between the sliding rail and the negative pressure handle, and the rotating motor and the electric winding drum are in electric signal transmission with the control panel; the negative pressure handle is internally provided with a battery component for supplying power to each rotating motor and each electric winding drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451663.1A CN114916996A (en) | 2021-12-01 | 2021-12-01 | Thrombus removing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451663.1A CN114916996A (en) | 2021-12-01 | 2021-12-01 | Thrombus removing assembly |
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| Publication Number | Publication Date |
|---|---|
| CN114916996A true CN114916996A (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111451663.1A Pending CN114916996A (en) | 2021-12-01 | 2021-12-01 | Thrombus removing assembly |
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| CN (1) | CN114916996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117224197A (en) * | 2023-11-13 | 2023-12-15 | 泓欣科创(北京)科技有限公司 | Vascular dredging and flushing device and vascular dredging and flushing method |
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