CN115607233A - Thrombus taking device - Google Patents
Thrombus taking device Download PDFInfo
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- CN115607233A CN115607233A CN202211338507.9A CN202211338507A CN115607233A CN 115607233 A CN115607233 A CN 115607233A CN 202211338507 A CN202211338507 A CN 202211338507A CN 115607233 A CN115607233 A CN 115607233A
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 142
- 238000005507 spraying Methods 0.000 claims description 52
- 238000013156 embolectomy Methods 0.000 claims description 30
- 230000002537 thrombolytic effect Effects 0.000 claims description 23
- 239000003814 drug Substances 0.000 claims description 21
- 238000013151 thrombectomy Methods 0.000 claims description 17
- 229940079593 drug Drugs 0.000 claims description 12
- 238000009941 weaving Methods 0.000 claims description 10
- 239000003146 anticoagulant agent Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 239000003527 fibrinolytic agent Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 210000004204 blood vessel Anatomy 0.000 description 9
- 239000007921 spray Substances 0.000 description 8
- 208000010378 Pulmonary Embolism Diseases 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012377 drug delivery Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 239000000829 suppository Substances 0.000 description 5
- 206010051055 Deep vein thrombosis Diseases 0.000 description 3
- 206010014522 Embolism venous Diseases 0.000 description 3
- 206010047249 Venous thrombosis Diseases 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 208000004043 venous thromboembolism Diseases 0.000 description 3
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000013039 cover film Substances 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 240000002836 Ipomoea tricolor Species 0.000 description 1
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000010100 anticoagulation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000007493 shaping process Methods 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
- A61B17/22—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
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—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
- A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—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
-
- 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
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
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Abstract
The invention relates to the field of medical equipment, and provides a thrombus taking device which comprises a conveying assembly and a thrombus taking support, wherein the conveying assembly comprises an end head, an inner pipe, a middle pipe, an outer pipe and a suction catheter; one end of the bolt taking support is connected with the end head, the other end of the bolt taking support is connected with one end of the end head adjacent to the middle tube, the bolt taking support is sleeved outside the inner tube and the middle tube, and the bolt taking support moves along with the inner tube and the middle tube to be exposed outside the outer tube or accommodated inside the outer tube. The invention improves the thrombus removal effect and the thrombus removal efficiency by the combined mode of thrombus dissolving and mechanical thrombus removal.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a thrombus removal device.
Background
Venous Thromboembolism (VTE) includes Pulmonary Thromboembolism (PE) and Deep Vein Thrombosis (DVT). PE and DVT share the same predisposition, with more than 95% of emboli originating in the lower extremities, and are two clinical manifestations of VTE at different sites and stages. PE, second only to coronary heart disease and stroke, causes the third-ranked death disease, has the characteristics of high incidence, high disability rate and high mortality rate, is a severe case and emergency of the respiratory system, and has relatively few new technologies aiming at reducing the morbidity and mortality rate of PE.
At present, the common treatment methods for pulmonary embolism diseases comprise anticoagulation, thrombolysis, mechanical thrombus removal and other treatment methods. In the related art, mechanical embolectomy is mainly performed by dissolving, crushing, sucking, stent or basket embolectomy and the like, and is the current clinical main treatment means. Current thrombectomy approaches are primarily accomplished by embedding the thrombectomy stent within the thrombus and then pulling the thrombus within the aspiration catheter for the purpose of thrombus capture and aspiration removal. The thrombus is captured by the thrombus taking stent and is removed by suction of the suction catheter, so that the thrombus is generally safe and effective, but because the thrombus is frequently required to be cut and grabbed in the thrombus taking process, a part of broken thrombus can be omitted, and incomplete thrombus clearing is easy to occur for large thrombus.
Disclosure of Invention
The present invention has been made to solve at least one of the problems occurring in the related art. Therefore, the invention provides a suppository taking device, which aims to solve the suppository through a pesticide spraying hole and then adopts a mechanical suppository taking combination mode, so that the suppository taking effect and the suppository taking efficiency are improved.
The thrombus removal device according to the embodiment of the first aspect of the invention comprises:
the conveying assembly comprises an end head, an inner pipe, an intermediate pipe, an outer pipe and a suction catheter, wherein the end head is connected with one end of the inner pipe, the intermediate pipe is movably sleeved on the inner pipe, the outer pipe is movably sleeved on the intermediate pipe, a medicine spraying hole is formed in the pipe wall of the outer pipe, the outer pipe is suitable for conveying thrombolytic medicines to be sprayed out from the medicine spraying hole, the suction catheter is movably sleeved on the outer pipe, and the suction catheter is suitable for sucking thrombus;
the bolt taking support is sleeved outside the inner tube and the middle tube, and moves along with the inner tube and the middle tube to be exposed outside the outer tube or accommodated inside the outer tube.
According to the thrombus taking device provided by the embodiment of the invention, the inner tube, the middle tube and the outer tube which are movably sleeved in sequence penetrate through the thrombus through the end heads, so that the medicine spraying hole on the outer tube corresponds to the thrombus, and thus, the thrombus is pretreated by injecting thrombolytic medicines into the outer tube, and part of the thrombus is dissolved. Simultaneously, the intermediate tube and the inner tube inside the outer tube are movable, the thrombus is passed through by the outer tube, and after the thrombus is pretreated by injecting thrombolytic drugs, the intermediate tube and the inner tube stretch out, so that the thrombus taking support is driven to be exposed outside the outer tube, the outer tube is moved towards the mouth of the suction catheter, the thrombus is driven by the thrombus taking support to be sucked to the suction catheter, and the thrombus is cleared. The combined mode of thrombolysis and mechanical thrombus extraction is adopted, so that the thrombus extraction effect and the thrombus extraction efficiency are improved.
According to one embodiment of the invention, a receiving section is arranged at one end of the outer pipe, which is adjacent to the end socket, the bolt-removing bracket can be received in the receiving section, a spraying section is further arranged on the outer pipe, the spraying section is arranged adjacent to the receiving section, the spraying section is arranged at one end of the receiving section, which is far away from the end socket, and the spraying hole is arranged in the spraying section.
According to one embodiment of the invention, the number of the spraying holes is multiple, and the spraying holes are uniformly distributed along the circumferential direction of the spraying section.
According to one embodiment of the invention, the embolectomy support comprises:
the body is sleeved on the inner pipe and the middle pipe, one end of the body is connected with the end head, and the other end of the body is connected with one end, close to the end head, of the middle pipe;
the net disc is arranged at one end of the body, which is adjacent to the end head;
the net bags are arranged on the body and positioned on one side, back to the end, of the net disc, a preset distance is reserved between every two adjacent net bags, and the diameters of the at least two net bags are the same or different;
wherein, the diameter of net dish is greater than the diameter of string bag.
According to one embodiment of the invention, the net disc is curved in an arc shape facing away from the head.
According to one embodiment of the invention, the mesh disc is provided with a cover film.
According to one embodiment of the invention, the net bag comprises a first section and a second section which are connected in a direction away from the end head, and the taper of the first section of part or all of the net bag is the same as or different from that of the second section.
According to one embodiment of the invention, the embolectomy supporting frame further comprises a plurality of net discs, all the net discs are positioned on one side of the net bag facing the head, a distance is reserved between every two adjacent net discs, and the diameter of the net disc adjacent to the head is larger than that of the other net discs.
According to one embodiment of the invention, the net disc and the net bag are formed by weaving wires, and the weaving density of the net disc is greater than that of the net bag.
According to one embodiment of the invention, the wire diameter of the net disc is smaller than that of the net bag.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a thrombus removal device provided by an embodiment of the present invention;
FIG. 2 is a perspective view of the thrombectomy device in the released state of the thrombectomy support according to the embodiment of the present invention;
FIG. 3 is a schematic structural view of a bolt-removing device according to an embodiment of the present invention in a state where a bolt-removing bracket is stored;
FIG. 4 is a schematic view of a partial structure of an outer tube of the embolectomy device provided by the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a thrombus removal support in the thrombus removal device according to the embodiment of the present invention;
FIG. 6 is a front view of a first mesh tray in a embolectomy device provided by an embodiment of the present invention;
FIG. 7 is a front view of a first net bag of the embolectomy device provided by the embodiment of the invention;
FIG. 8 is a schematic structural diagram of a first net disk in the embolectomy device provided by the embodiment of the invention;
FIG. 9 is a schematic structural view of a thrombus removal support in a thrombus removal device according to another embodiment of the present invention;
FIG. 10 is a schematic structural view of a thrombus removal support in a thrombus removal device according to another embodiment of the present invention;
FIG. 11 is a schematic structural view of a thrombus removal support in a thrombus removal device according to still another embodiment of the present invention;
FIG. 12 is a schematic view of a thrombus removal support in a thrombus removal device according to still another embodiment of the present invention;
FIG. 13 is a schematic view of a thrombus removal support in a thrombus removal device according to still another embodiment of the present invention;
FIG. 14 is a schematic structural view of a thrombus removal support in a thrombus removal device according to still another embodiment of the present invention;
FIG. 15 is a schematic structural diagram illustrating a bolt-removing process of the bolt-removing device according to an embodiment of the present invention;
FIG. 16 is a schematic structural diagram of a thrombus removal process of the thrombus removal device provided by the embodiment of the invention;
FIG. 17 is a schematic structural diagram of a bolt-removing process of the bolt-removing device according to the embodiment of the present invention.
Reference numerals:
100. a thrombus taking device; 1. a thrombus taking support; 10. a body; 11. a first mesh tray; 111. coating a film; 12. a first string bag; 121. a first stage; 122. a second stage; 13. a second net bag; 131. a third stage; 132. a fourth stage; 14. a second mesh tray; 15. a third string bag; 21. a tip; 22. an inner tube; 23. an intermediate pipe; 24. an outer tube; 241. a pesticide spraying hole; 242. a storage section; 243. a pesticide spraying section; 25. a suction catheter; 26. a first developing device; 27. a second developing device; 200. thrombosis.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The term "proximal" generally refers to the end of the corresponding member that is closer to the operator, and "distal" refers to the end of the corresponding member that is further from the operator.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Referring to fig. 1 to 4, the thrombus removal device 100 according to the first embodiment of the present invention includes a conveying assembly and a thrombus removal support 1, wherein the conveying assembly includes a tip 21, an inner tube 22, an intermediate tube 23, an outer tube 24 and a suction catheter 25, the tip 21 is connected to one end of the inner tube 22, the intermediate tube 23 is movably sleeved on the inner tube 22, the outer tube 24 is movably sleeved on the intermediate tube 23, a drug spraying hole 241 is formed on a tube wall of the outer tube 24, the outer tube 24 is suitable for conveying thrombolytic drugs to be sprayed out from the drug spraying hole 241, the suction catheter 25 is movably sleeved on the outer tube 24, and the suction catheter 25 is suitable for sucking thrombus 200; one end of the embolectomy support 1 is connected with the end head 21, the other end is connected with one end of the middle tube 23 adjacent to the end head 21, the embolectomy support 1 is sleeved outside the inner tube 22 and the middle tube 23, and the embolectomy support 1 moves along with the inner tube 22 and the middle tube 23 to be exposed outside the outer tube 24 or accommodated inside the outer tube 24.
In this embodiment, the inner tube 22, the middle tube 23, the outer tube 24 and the suction catheter 25 are movably sleeved from inside to outside in sequence, and the tip 21 is connected to one end of the inner tube 22. According to one embodiment of the present invention, the tip 21 has a tapered shape. The tip 21 is adapted to penetrate the thrombus 200 during advancement to facilitate advancement such that the spray holes 241 of the outer tube 24 spray the thrombus 200. It will be appreciated that the intermediate tube 23 is spaced from the outer tube 24 to allow for the delivery of thrombolytic drug through the outer tube 24, thus eliminating the need for an additional drug delivery conduit and reducing the structural complexity. It should be noted that during advancement of the delivery assembly, the thrombectomy stent 1 is housed within the outer tube 24 to avoid interference with advancement. In addition, the thrombolysis support 1 is released after thrombolysis pretreatment, so that the end 21 can be plugged at one end of the outer tube 24 and is tightly matched with the outer tube 24, a sealed space is formed at one end of the outer tube 24 close to the spraying hole 241, and the thrombolysis medicine can be sprayed out from the spraying hole 241 when being injected, so that the thrombolysis medicine is prevented from leaking out of the end of the outer tube 24, and the thrombolysis precision is improved. After reaching the thrombus 200 site, the intermediate tube 23 and the inner tube 22 may be pushed to release the thrombectomy stent 1, thereby facilitating the mechanical thrombectomy procedure. Optionally, a first developing device 26 and a second developing device 27 may be respectively disposed at two ends of the thrombectomy holder 1 so as to facilitate observation of the position of the thrombectomy holder 1, and the developing devices may be made of platinum-iridium alloy.
Illustratively, the thrombectomy stent 1 has one end connected to the inner tube 22 adjacent to the tip 21 and the other end connected to the intermediate tube 23, such that the inner tube 22 is axially movable relative to the intermediate tube 23 to adjust the axial length of the thrombectomy stent 1 for subsequent thrombectomy procedures. Optionally, the thrombus removal stent 1 is composed of a net structure, the net structure is formed by weaving nickel-titanium wires into a net tube shape and shaping the net tube shape through a mold, and the connection part of the nickel-titanium wires is in smooth transition. Alternatively, the thrombectomy stent 1 can be entirely retracted into the aspiration catheter 25 after the thrombectomy 200, to complete the removal of the thrombi 200.
It can be understood that a single conventional thrombus treatment method, either thrombolysis or mechanical thrombus removal, is not effective in treating thrombus problems. Clinically, a thrombus treatment device which can improve the catheter thrombolysis effect and can thoroughly remove thrombus and avoid thrombus escape is urgently needed.
According to the thrombus removal device 100 provided by the embodiment of the invention, the inner tube 22, the middle tube 23 and the outer tube 24 which are movably sleeved in sequence are partially penetrated through the thrombus 200 through the end 21, so that the spraying hole 241 on the outer tube 24 corresponds to the thrombus 200, and thus, the thrombus 200 is pretreated by injecting thrombolytic drugs into the outer tube 24, and part of the thrombus 200 is dissolved. Meanwhile, the middle tube 23 and the inner tube 22 in the outer tube 24 can move, the outer tube 24 penetrates through the thrombus 200, and after the thrombus 200 is pretreated by injecting thrombolytic drugs, the middle tube 23 and the inner tube 22 extend out to drive the thrombus taking support 1 to be exposed outside the outer tube 24, and the outer tube 24 is moved towards the orifice of the suction catheter 25, so that the thrombus 200 is driven by the thrombus taking support 1 to be sucked to the suction catheter 25, and the thrombus 200 is removed. By combining the thrombolysis and mechanical thrombus extraction, the thrombus extraction effect and the thrombus extraction efficiency are improved. It can be understood that before the thrombus stent 1 is released, the thrombus 200 can be pretreated by the injectable thrombolytic drug, so that the dosage of the thrombolytic drug and the thrombolytic time can be obviously reduced, serious complications such as thrombolytic hemorrhage and the like can be reduced, and a minimally invasive effect can be achieved. Meanwhile, the thrombus 200 can be partially softened or broken through advanced thrombolysis treatment, so that the subsequent thrombus 200 cutting and pulling efficiencies are improved, and the thrombus 200 residue can be reduced.
Referring to fig. 3 and 4, according to an embodiment of the present invention, a receiving section 242 is disposed at an end of the outer tube 24 adjacent to the tip 21, the embolectomy stent 1 can be received in the receiving section 242, a spraying section 243 is further disposed on the outer tube 24, the spraying section 243 is disposed adjacent to the receiving section 242, the spraying section 243 is disposed at an end of the receiving section 242 away from the tip 21, and the spraying hole 241 is disposed at the spraying section 243.
In this embodiment, the length of the storage section 242 is matched with the length of the thrombolytic drug delivery support 1, so as to store the thrombolytic drug delivery support 1, that is, the storage section 242 and the drug spraying section 243 are sequentially arranged in the direction away from the end 21 at the end of the outer tube 24, and the drug spraying hole 241 is arranged in the drug spraying section 243, so that when the thrombolytic drug delivery support 1 is stored in the storage section 242, the drug spraying hole 241 is not blocked by the thrombolytic drug delivery support 1, and the thrombolytic drug is not sprayed out from the drug spraying hole 241 by the thrombolytic drug delivery support 1, so that the thrombolytic drug can be smoothly sprayed out from the drug spraying hole 241, thereby improving the thrombolytic efficiency. It will be appreciated that in order to avoid the spray hole 241 being blocked by the bolt support 1 in correspondence with the bolt support 1, the bolt support 1 is received in the receiving section 242, while the spray hole 241 is provided in the spray section 243, so as to be spaced apart. In addition, even if the embolectomy support 1 does not block the spray hole 241, the efficiency of the ejection of the thrombolytic drug from the spray hole 241 is easily affected by disposing the embolectomy support 1 in correspondence with the spray hole 241. Illustratively, after the accommodating section 242 passes through the thrombus 200, the spraying section 243 is positioned at the position of the thrombus 200, so that the spraying is carried out for thrombolysis treatment, and then the accommodating section 242 releases the thrombus taking support 1 to block thrombus 200 debris, so as to prevent the thrombus 200 from escaping to the far end of the branch vessel to cause secondary blockage, and improve the thrombus taking effect.
According to one embodiment of the present invention, the number of the spraying holes 241 is plural, and the plural spraying holes 241 are uniformly distributed along the circumferential direction of the spraying section 243. It can be understood that the plurality of spraying holes 241 may be distributed all over the spraying section 243, and the plurality of spraying holes 241 may be uniformly distributed along the circumferential direction of the spraying section 243, so that the thrombolytic medicine may be uniformly sprayed along the circumferential direction of the spraying section 243 to improve the thrombolytic efficiency. Alternatively, the length of the spraying section 243 is set to 40-60mm.
As shown in fig. 5, according to an embodiment of the present invention, the embolectomy support 1 comprises a body 10, a first net disk 11, a first net bag 12 and a second net bag 13, wherein the body 10 is sleeved on an inner tube 22 and an intermediate tube 23, one end of the body 10 is connected with an end 21, and the other end is connected with one end of the intermediate tube 23 adjacent to the end 21; the first net disk 11 is arranged at one end of the body 10 adjacent to the end head 21; the first net bag 12 is arranged on the body 10 and is positioned on one side of the first net disk 11, which is back to the end 21; the second net bag 13 is arranged on the body 10 and is positioned on one side of the first net bag 12 back to the end 21; wherein, the diameter of the first net disk 11 is larger than the diameters of the first net bag 12 and the second net bag 13.
In this embodiment, the first net disk 11, the first net bag 12 and the second net bag 13 are sequentially arranged on the body 10 at intervals, after thrombolysis treatment is performed on the thrombus 200, the thrombus taking support 1 is recovered, the first net bag 12 and the second net bag 13 cut the thrombus 200 and intercept part of the thrombus 200, and then the first net disk 11 intercepts the broken thrombus 200, so as to conveniently clear the thrombus 200. Of course, a plurality of net disks or a plurality of net bags may be provided to improve the cutting effect on the thrombus 200 and the intercepting effect of intercepting the fragmented thrombus 200. Wherein, the diameter of the net disk is larger than that of the net bag, so that the net disk can better intercept the thrombus 200. Optionally, the net disc and the net bag are formed by weaving wires, the weaving density of the net disc is greater than that of the net bag, and in addition, the wire diameter of the net disc can be set to be smaller than that of the net bag, so that the meshes of the net disc are tight, the supporting force between the net disc and the inner wall of the blood vessel is small, the net disc can be tightly attached to the blood vessel, and the inner wall of the blood vessel cannot be damaged; and the net hole of string bag is sparse, and the holding power is great, can effectively cut bold thrombus 200.
In this embodiment, the whole mesh structure of the thrombectomy stent 1 can be made of nitinol wires, and is a self-expandable metal stent, that is, when the thrombectomy stent 1 is released outside the outer tube 24, the first net disk 11, the first net bag 12 and the second net bag 13 automatically expand to open into a disc-shaped structure, so as to achieve the effect of intercepting the thrombi 200. As shown in fig. 6, it can be understood that the diameter of the first net disk 11 is larger than the diameters of the first net bag 12 and the second net bag 13, when the thrombus taking stent 1 is released, the first net disk 11 is contacted with the wall of the blood vessel, so that the first net disk 11 can intercept the thrombus 200 and prevent the thrombus 200 from escaping. Meanwhile, the diameters of the first net bag 12 and the second net bag 13 are small, so that the thrombus 200 can be cut, and the released thrombus can not contact with the blood vessel wall due to the small diameters of the first net bag and the second net bag, so that the injury to the blood vessel wall is avoided. Referring to fig. 6 and 7 in combination, it can be understood that the first net disk 11, the first net bag 12 and the second net bag 13 are all formed by weaving ni-ti wires, and optionally, the weaving density of the first net disk 11 is set to be greater than that of the first net bag 12 and the second net bag 13, so that the contact area of the first net disk 11 and the thrombus 200 is larger to improve the capability of blocking the broken thrombus 200; and the first net bag 12 and the second net bag 13 have a lower weaving density, a smaller contact area with the thrombus 200, and a greater cutting force applied to the thrombus 200 to improve the ability of cutting the thrombus 200. Optionally, the wire diameter of the first net disk 11 is smaller than the wire diameters of the first net bag 12 and the second net bag 13, and the meshes of the first net disk 11 are tight, so that the supporting force between the meshes and the inner wall of the blood vessel is small, and the first net disk can be tightly attached to the blood vessel without damaging the inner wall of the blood vessel; and the meshes of the first net bag 12 and the second net bag 13 are sparse, the supporting force is large, and the large thrombus 200 can be effectively cut. It should be noted that the first net bag 12 and the second net bag 13 effectively break the thrombus 200, and perform distal occlusion through the first net disk 11, and finally suck out the thrombus 200 through the suction catheter 25, thereby completing the removal of the thrombus 200.
As shown in fig. 9, according to one embodiment of the invention, the first mesh panel 11 is curved in an arc shape in a direction away from the tip 21. That is, the first mesh disk 11 may have an airfoil shape, an umbrella shape, or a cone shape, so as to increase the adhesion of the first mesh disk 11 to the vessel wall and enhance the blocking ability of the fragmented thrombus 200.
As shown in fig. 8, according to one embodiment of the invention, the first mesh tray 11 is provided with a cover film 111. It can be understood that a film 111 can be arranged on one side of the first net disk 11 close to the end head 21, and the net holes are covered by the film 111, so as to further collect and block the escaped broken thrombus 200 and improve the thrombus removal effect.
Referring to fig. 10 and 11 in combination, according to an embodiment of the present invention, the first string bag 12 includes a first section 121 and a second section 122 connected to each other in a direction away from the head 21, a taper of the first section 121 is the same as a taper of the second section 122, that is, a projection area of the first section 121 and the second section 122 on the body 10 is the same, that is, the first section 121 and the second section 122 are combined to form a flying saucer shape, that is, the first section 121 and the second section 122 are symmetrically disposed. Alternatively, the taper of the first section 121 is greater than that of the second section 122, that is, the projection area of the first section 121 on the body 10 is smaller than that of the second section 122 on the body 10, that is, the first section 121 and the second section 122 are combined to form a flower-bud shape, the first section 121 is close to the end 21, and the second section 122 is far from the end 21, so that the thrombus 200 is mainly cut by the second section 122. Thus, the surface area of the second section 122 is greater than the surface area of the first section 121, the braided wires at the second section 122 are more sparse, and the second section 122 cuts the thrombus 200 to improve the cutting ability for cutting the large thrombus 200.
Optionally, the second string bag 13 comprises a third segment 131 and a fourth segment 132 connected in a direction away from the head 21, wherein the taper of the third segment 131 is the same as that of the fourth segment 132, or the taper of the third segment 131 is greater than that of the fourth segment 132. It is understood that the third segment 131 is identical in structure and function to the first segment 121, and the fourth segment 132 is identical in structure and function to the second segment 122, which are not described in detail herein.
As shown in fig. 12 and 14, according to an embodiment of the present invention, the embolectomy support 1 further comprises a second net disk 14, the second net disk 14 is arranged between the first net disk 11 and the first net bag 12, and the diameter of the second net disk 14 is smaller than that of the first net disk 11. As can be understood, the first mesh plate 11 has a limited force for pulling the old mural thrombus 200 due to the small wire diameter and the small supporting force of the wires, and in order to increase the capability of intercepting and pulling the thrombus 200, a second mesh plate 14 can be added on the side of the first mesh plate 11 opposite to the end 21, optionally, the second mesh plate 14 has a smaller diameter than the first mesh plate 11, the woven wires are closely arranged, and the wire diameter is consistent with that of the first mesh plate 11.
As shown in fig. 13 and 14, according to one embodiment of the present invention, the embolectomy support 1 further comprises a third string bag 15, the third string bag 15 is disposed between the first string bag 12 and the second string bag 13, and the diameter of the third string bag 15 is smaller than the diameter of the first string bag 12 and the second string bag 13. In this embodiment, for the ability that increases to get bolt support 1 and draw and get thrombus 200, can increase a third string bag 15 in the middle of first string bag 12 and second string bag 13, the overall structure of third string bag 15 is with second string bag 13, and the diameter of third string bag 15 is slightly littleer, when getting the bolt, can cooperate first string bag 12 and second string bag 13 to carry out the cutting of different degree to bold thrombus 200, increases the ability of getting the bolt.
Referring to fig. 15 to 17, in an embodiment, the embolectomy process is as follows: firstly, sending the assembled thrombus taking support 1 into the part of the thrombus 200 through a conveying assembly, determining the position through a developing device of the thrombus taking support 1, placing an outer tube 24 with a medicine spraying hole 241 in the thrombus 200, and carrying out thrombolysis treatment by injecting thrombolytic medicines; and then the thrombus taking support 1 is released, the first net disk 11 of the thrombus taking support 1 is released at the far end of the thrombus 200 according to the developing device, the first net bag 12 and the second net bag 13 are released in the thrombus 200, the releasing position is adjusted by pushing the inner tube 22, the middle tube 23 is pulled to cut the thrombus 200, the operation can be repeated, the outer tube 24 is pulled to pull the whole thrombus taking support 1 and the thrombus 200 to the mouth of the suction catheter 25 for suction, and the thrombus 200 is thoroughly removed.
Finally, it should be noted that the above embodiments are only for illustrating the present invention, and do not limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (10)
1. A thrombectomy device, comprising:
the delivery assembly comprises an end head, an inner pipe, an intermediate pipe, an outer pipe and a suction catheter, wherein the end head is connected with one end of the inner pipe, the intermediate pipe is movably sleeved on the inner pipe, the outer pipe is movably sleeved on the intermediate pipe, a medicine spraying hole is formed in the pipe wall of the outer pipe, the outer pipe is suitable for delivering thrombolytic medicines to be sprayed out from the medicine spraying hole, the suction catheter is movably sleeved on the outer pipe, and the suction catheter is suitable for sucking thrombus;
the bolt taking support is sleeved outside the inner tube and the middle tube and moves along with the inner tube and the middle tube so as to be exposed outside the outer tube or be contained inside the outer tube.
2. The embolectomy device of claim 1, wherein the end of the outer tube adjacent to the end is provided with a receiving section, the embolectomy support can be received in the receiving section, the outer tube is further provided with a spraying section, the spraying section is arranged adjacent to the receiving section, the spraying section is arranged at the end of the receiving section far away from the end, and the spraying hole is arranged at the spraying section.
3. The embolectomy device of claim 2, wherein the number of the spraying holes is plural, and the plural spraying holes are uniformly distributed along the circumferential direction of the spraying section.
4. The embolectomy device of claim 1, wherein the embolectomy support comprises:
the body is sleeved on the inner pipe and the middle pipe, one end of the body is connected with the end head, and the other end of the body is connected with one end, adjacent to the end head, of the middle pipe;
the net disc is arranged at one end of the body, which is adjacent to the end head;
the net bags are arranged on the body and positioned on one side, back to the end, of the net disc, a preset interval is reserved between every two adjacent net bags, and the diameters of the at least two net bags are the same or different;
wherein, the diameter of the net disk is larger than that of the net bag.
5. The embolectomy device of claim 4, wherein the mesh disc is arcuately curved in a direction away from the tip.
6. The embolectomy device of claim 4, wherein the mesh disc is provided with a coating.
7. The embolectomy device of claim 4, wherein the net bag comprises a first section and a second section which are connected in a direction away from the tip, and the taper of the first section is the same as or different from the taper of the second section in part or all of the net bag.
8. The embolectomy device of claim 4, wherein the embolectomy support further comprises a plurality of net discs, all of the net discs are positioned on one side of the net bag facing the head, the adjacent net discs have a spacing therebetween, and the diameter of the net disc adjacent to the head is larger than the diameter of the other net discs.
9. The embolectomy device of any of claims 4-8, wherein the net disc and the net bag are both formed by weaving wires, and the weaving density of the net disc is greater than that of the net bag.
10. The embolectomy device of any of claim 9, wherein the wire diameter of the mesh disc is smaller than the wire diameter of the mesh bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211338507.9A CN115607233A (en) | 2022-10-28 | 2022-10-28 | Thrombus taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211338507.9A CN115607233A (en) | 2022-10-28 | 2022-10-28 | Thrombus taking device |
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| Publication Number | Publication Date |
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| CN115607233A true CN115607233A (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211338507.9A Pending CN115607233A (en) | 2022-10-28 | 2022-10-28 | Thrombus taking device |
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| CN (1) | CN115607233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117731366A (en) * | 2024-02-20 | 2024-03-22 | 北京心祐医疗科技有限公司 | Thrombolytic net and mechanical thrombolytic device |
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