CN113229886A - Brain protection system - Google Patents
Brain protection system Download PDFInfo
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- CN113229886A CN113229886A CN202110414460.9A CN202110414460A CN113229886A CN 113229886 A CN113229886 A CN 113229886A CN 202110414460 A CN202110414460 A CN 202110414460A CN 113229886 A CN113229886 A CN 113229886A
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- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims abstract description 12
- 210000003270 subclavian artery Anatomy 0.000 claims abstract description 9
- 210000002376 aorta thoracic Anatomy 0.000 claims description 7
- 210000002385 vertebral artery Anatomy 0.000 claims description 6
- 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 claims description 5
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 5
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 claims description 4
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Images
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
- 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
- A61B2017/00831—Material properties
- A61B2017/00862—Material properties elastic or resilient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
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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
- A61B2017/22038—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 a guide wire
-
- 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
Abstract
The invention discloses a brain protection system, and relates to the technical field of medical instruments. Including pipe one and be used for collecting collection subassembly two of clot and embolus, it sets up in the inside of pipe one to collect the subassembly activity, it includes pipe two to collect the subassembly, the inside activity of pipe two is provided with pipe three, the bottom of pipe three is provided with the connecting wire, the bottom of pipe three is provided with useful collection net one, it is used for intercepting the inside embolus and the clot of getting into subclavian artery to collect net one. Through setting up the collection subassembly, the connecting wire is through the portion pulling binding off silk two of bending for two binding off silk two relative movement and laminating, thereby when having avoided collecting net two and taking out, collect the condition that the inside blood clot and the embolus of net two appear breaking away from, drive the connecting wire rebound when the three rebound of pipe, make collect net one and collect the work of tightening up of net two and go on simultaneously, further guaranteed collection effect and operating efficiency, wide application prospect has.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a brain protection system.
Background
The brain cells have high demand for oxygen supply, and human brain blood supply mainly comprises four arteries, including a basilar artery synthesized by two vertebral arteries and two internal carotid arteries, which are co-injected and redistributed through a Willis ring to supply blood to brain tissues, so that one blood supply artery is blocked, and other arteries can have certain compensatory blood supply. However, when collateral circulation is not or not enough to compensate, the brain tissue supplied by the blocked artery will undergo irreversible ischemic necrosis, i.e. cerebral embolism, leading to partial loss of function of the human body, which may be fatal.
Specifically, cerebral embolism refers to the blockage of cerebral vessels by various emboli in blood (such as mural thrombus in heart, atherosclerotic plaque, fat, tumor cells, fibrocartilage or air, etc.) entering cerebral arteries along with blood flow, causing ischemic necrosis of brain tissue in partial areas supplied with blood from the arteries, and focal neurological deficit. Cerebral embolism often occurs in the internal carotid artery system, and the cerebral embolism accounts for about 15% -20% of ischemic stroke.
Carotid artery stenosis, which causes insufficient blood supply, is one of the key factors causing stroke, and carotid artery stent implantation is the main operation type for treating carotid artery atherosclerotic stenosis, however, in carotid artery stent implantation, because of damage to the inner wall of the carotid artery, a large amount of thrombus or fragments (embolus) can be generated or shed, and if the thrombus or fragments enter other blood vessels in the downstream brain along with blood flow, the thin blood vessels can be blocked, and stroke is caused. Therefore, when performing a carotid stenting procedure, for example, it is necessary to place a cerebral embolism protection device in advance in a blood vessel downstream of the carotid artery surgery to collect emboli generated in the carotid artery stenting procedure at a far end, and simultaneously ensure normal blood flow to supply blood to the brain and prevent cerebral apoplexy.
Present current embolus collection mode adopts filtering network nature cerebral embolism protection device mostly, is about to place the filter screen in a pipe, and the propelling movement is to the femoral artery at operation position, and then the filter screen struts in the femoral artery, intercepts the embolus and retrieves, but contradicts the pipe earlier when the filter screen takes out, makes inside collection clot and embolus get into the artery again easily in, can't obtain effective collection, the result of use is unsatisfactory.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a brain protection system comprises a first catheter and a second collection assembly used for collecting blood clots and emboli, wherein the first collection assembly is movably arranged inside the first catheter, the second collection assembly comprises a second catheter, a third catheter is movably arranged inside the second catheter, a connecting wire is arranged at the bottom end of the third catheter, a first collection net is arranged at the bottom end of the third catheter and used for intercepting emboli and blood clots entering subclavian arteries, a tightening wire is arranged at the bottom of the first collection net, a positioning guide wire is movably arranged inside the third catheter, a fixed block is fixedly arranged on the surface of the positioning guide wire, the bottom end of the tightening wire is fixedly connected with the top of the fixed block, an elastic portion is arranged at the bottom of the positioning guide wire, a positioning portion is fixedly arranged at one end, far away from the positioning guide wire, of the elastic portion, and a second collection net is arranged on the surface of the positioning portion, collect net two and be used for collecting inside embolus and the blood clot of aortic arch, one side of collecting net two has set gradually and has collected net three and collect the net silk, collect net two and collect net three and all communicate with collecting net two phases, collect net three and collect net four and be used for collecting the inside blood clot and the embolus that get into vertebral artery and carotid respectively, the surface of collecting net three is provided with binding off silk two, binding off silk two is connected with the connecting wire transmission.
As a preferable technical scheme of the present invention, the number of the tightening wires is four, each two of the four tightening wires are in one group, and two groups of the tightening wires are arranged in a staggered manner.
As a preferable technical scheme of the invention, the fixing block is internally provided with a fixing hole, and the inside of the fixing hole is movably sleeved with the surface of the connecting wire.
As a preferred technical scheme of the invention, a connecting plate is fixedly arranged on the surface of the positioning guide wire, a connecting hole is formed in the connecting plate, the inside of the connecting hole is movably sleeved with the surface of the connecting wire pair, and the connecting plate is positioned below the fixing block.
As a preferred technical scheme of the invention, a first developing mark is arranged on the surface of the positioning guide wire, the first developing mark is positioned below the connecting plate, and a second developing mark is arranged on the surface of the positioning part.
As a preferable technical scheme of the invention, a first closing-up wire is arranged at the bottom of the first collecting net, and the top end of the first closing-up wire is fixedly connected with the surface of the first closing-up wire.
As a preferable technical scheme of the invention, the surface of the positioning part is fixedly provided with a guide plate, the interior of the guide plate is provided with a guide hole, and the interior of the guide hole is movably sleeved with the surface of the connecting wire.
As a preferable technical scheme of the invention, one end of the second closing-up wire is fixedly connected with the surface of the positioning part, the other end of the second closing-up wire is fixedly provided with a bending part, and one end of the bending part, far away from the second closing-up wire, is fixedly connected with one end of the connecting wire, far away from the third catheter.
As a preferred technical scheme of the present invention, the first collecting net, the second collecting net, the third collecting net and the fourth collecting net are all nitinol filter screens, and heparin coatings are sprayed on the surfaces of the first collecting net, the second collecting net, the third collecting net and the fourth collecting net.
As a preferable technical scheme of the invention, the first collecting net, the third collecting net and the fourth collecting net are all arranged in an inverted cone shape, and the second collecting net is arranged in an arch shape.
Compared with the prior art, the invention provides a brain protection system, which has the following beneficial effects:
1. this brain protection system, through setting up collection subassembly, pull catheter three earlier, collect net one and pull the silk of tightening through a binding off silk pulling when upwards moving, four crisscross tightening silks that set up receive ascending traction force and begin to tighten straight and with the laminating of location seal wire for binding off silk warp closed, the blood clot and the embolus of having avoided inside collection break away from out, compare in conventional filtering networkness cerebral embolism protection device, the device has effectively guaranteed the collection effect.
2. This brain protection system, through setting up the collection subassembly, the connecting wire is through the portion of bending pulling binding off silk two, make two relative movements of two binding off silks and laminating, thereby when having avoided collecting net two to take out, collect the condition that the inside blood clot and the embolus of net two appear breaking away from, drive the connecting wire rebound when the three rebound of pipe, make and collect net one and collect the work of tightening up of net two and go on simultaneously, further guaranteed collection effect and operating efficiency, wide application prospect has.
3. This brain protection system, through setting up the collection subassembly, the nitinol alloy filter screen has good shape memory characteristic, hyperelasticity, corrosion resistance and soft power of correcting, has guaranteed to collect net one, has collected net two, has collected net three and has collected the four effect of opening of net to the capture efficiency of blood clot and embolus has been guaranteed, has avoided appearing the condition of neglecting to catch.
4. This brain protection system, through setting up the collection subassembly, the three upward movements of pipe drive the connecting wire rebound simultaneously, and the connecting wire slides in the inside of fixed orifices and connecting hole, and fixed plate cooperation connecting plate leads the connecting wire for the connecting wire is arranged in order, has avoided getting into the internal back and has appeared the condition of knoing with tightening up the silk, makes operation process more smooth.
Drawings
Fig. 1 is a schematic structural diagram of a brain protection system according to the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is a schematic structural diagram of a second collecting net of the brain protection system according to the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 3;
fig. 5 is a schematic structural diagram of a collection assembly of a brain protection system according to the present invention in a storage state;
fig. 6 is a schematic structural diagram of a collecting assembly of a brain protection system according to the present invention in a use state;
fig. 7 is a schematic structural diagram of the use states of a second collection net and a third collection net of the brain protection system provided by the present invention.
In the figure: 1. a first conduit; 2. a collection assembly; 21. a second conduit; 22. a third conduit; 221. connecting wires; 23. collecting a first net; 231. a first closing-up thread; 232. tightening the wire; 24. positioning a guide wire; 241. a connecting plate; 242. connecting holes; 243. a first development mark; 25. a fixed block; 251. a fixing hole; 26. an elastic part; 27. a positioning part; 271. a guide plate; 272. a guide hole; 273. a second developing mark; 28. a second closing-up thread; 281. a bending part; 29. collecting a second net; 291. collecting a third net; 292. and collecting a net IV.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a brain protection system includes a first catheter 1 and a second collection assembly 2 for collecting clots and emboli, the first collection assembly 2 is movably disposed inside the first catheter 1, the second collection assembly 2 includes a second catheter 21, a third catheter 22 is movably disposed inside the second catheter 21, a connecting wire 221 is disposed at the bottom end of the third catheter 22, a first collection net 23 is disposed at the bottom end of the third catheter 22, the first collection net 23 is used for intercepting emboli and emboli entering a subclavian artery, a tightening wire 232 is disposed at the bottom of the collection net, a positioning guide wire 24 is movably disposed inside the third catheter 22, a fixed block 25 is fixedly disposed on the surface of the positioning guide wire 24, the bottom end of the tightening wire 232 is fixedly connected with the top of the fixed block 25, an elastic portion 26 is disposed at the bottom of the positioning guide wire 24, and the elastic portion 26 is in an L shape, collect to the inside of pipe two 21 before the operation for elasticity portion 26 resumes initial shape fast when moving out from the inside of pipe two 21, the fixed location portion 27 that is provided with of one end that fixes a position seal wire 24 is kept away from to elasticity portion 26, the surface of location portion 27 is provided with collects net two 29, collect net two 29 and be used for collecting the inside embolus and the blood clot of aortic arch, one side of collecting net two 29 is provided with in proper order collects net three 291 and collects the net silk, collect net two 29 and collect net three 291 and be linked together with collecting net two 29, collect net three 291 and collect net four 292 and be used for collecting the blood clot and the embolus that get into vertebral artery and carotid artery inside respectively, the surface of collecting net three 291 is provided with closing up silk two 28, closing up silk two 28 and connecting wire 221 transmission are connected, through setting up collection component 2, pull pipe three 22 earlier, collect net one 23 and pull closing up silk 232 through closing up silk 231 when moving upwards, four alternately arranged tightening wires 232 start to be stretched straight by upward traction force and are attached to the positioning guide wire 24, so that the first closing wire 231 deforms and is closed, the separation of blood clots and emboli collected inside is avoided, compared with a conventional filter screen type cerebral embolism protection device, the device effectively ensures the collection effect, the connecting wire 221 pulls the second closing wire 28 through the bending portion 281, so that the two second closing wires 28 move relatively and are attached to each other, the separation of the blood clots and emboli inside the second collection net 29 is avoided when the second collection net 29 is taken out, the connecting wire 221 is driven to move upwards while the third guide tube 22 moves upwards, the tightening work of the first collection net 23 and the second collection net 29 is carried out simultaneously, the collection effect and the operation efficiency are further ensured, and the device has a wide application prospect.
As a specific technical scheme of this embodiment, the number of the tightening wires 232 is four, four the tightening wires 232 are arranged in a manner that every two tightening wires are a group and two tightening wires 232 are arranged in a mutually staggered manner, the bottom of the first collecting net 23 is provided with a first tightening wire 231, and the top end of the tightening wire 232 is fixedly connected with the surface of the first tightening wire 231.
In this embodiment, get into the inside blood clot and the embolus of subclavian artery and collect net 23 and intercept, when collecting net 23 and take out, pull pipe three 22 earlier, make pipe three 22 drive and collect net 23 rebound, collect net 23 rebound through closing up silk 231 pulling tightening wire 232, four crisscross tightening wire 232 that set up receive ascending traction force and begin to tighten up and laminate with location seal wire 24, make closing up silk 231 warp the closure, the blood clot and the embolus of having avoided inside collection break away from, make the inside of getting into pipe 1 when collecting net 23 and taking out smoothly simultaneously.
As a specific technical solution of this embodiment, a fixing hole 251 is formed in the fixing block 25, the fixing hole 251 is movably sleeved on the surface of the connecting wire 221, a connecting plate 241 is fixedly disposed on the surface of the positioning guide wire 24, a connecting hole 242 is formed in the connecting plate 241, the connecting hole 242 is movably sleeved on the surface of the connecting wire 221, and the connecting plate 241 is located below the fixing block 25.
In this embodiment, the third catheter 22 moves upward while driving the connecting wire 221 to move upward, the connecting wire 221 slides inside the fixing hole 251 and the connecting hole 242, and the fixing plate cooperates with the connecting plate 241 to guide the connecting wire 221, so that the connecting wire 221 is orderly arranged, the knotting of the connecting wire 232 after entering the body is avoided, and the operation process is smoother.
As a specific technical solution of this embodiment, a first developing mark 243 is provided on the surface of the positioning guide wire 24, the first developing mark 243 is located below the connecting plate 241, and a second developing mark 273 is provided on the surface of the positioning portion 27.
In this embodiment, the first developing identifier 243 and the second developing identifier 273 are both made of a material with a relatively high density, such as barium sulfate, so that the X-ray cannot penetrate through the first developing identifier and the second developing identifier, and therefore, under the irradiation of the X-ray, the positions of the positioning portion 27 and the positioning guide wire 24 are determined, the number of the developing identifiers is determined according to the operation requirement, and the first developing identifier 243 and the second developing identifier 273 are not limited to.
As a specific technical solution of this embodiment, a guide plate 271 is fixedly disposed on the surface of the positioning portion 27, a guide hole 272 is disposed inside the guide plate 271, the inside of the guide hole 272 is movably sleeved on the surface of the connecting wire 221, one end of the closing wire two 28 is fixedly connected to the surface of the positioning portion 27, the other end of the closing wire two 28 is fixedly provided with a bending portion 281, and one end of the bending portion 281, which is far away from the closing wire two 28, is fixedly connected to one end of the connecting wire 221, which is far away from the catheter three 22.
In this embodiment, the connecting wire 221 is driven to move upwards while the third catheter 22 moves upwards, so that the first collecting net 23 and the second collecting net 29 are tightened simultaneously, the connecting wire 221 slides in the guide hole 272 when moving upwards, the guide block is matched with the guide hole 272 to guide the connecting wire 221, the connecting wire 221 pulls the second closing-up wire 28 through the bending part 281, so that the two second closing-up wires 28 move relatively and are attached to each other, thereby avoiding the situation that blood clots and emboli inside the second collecting net 29 break away from each other when the second collecting net 29 is taken out, and ensuring the collecting effect.
As a specific technical scheme of this embodiment, the first collecting net 23, the second collecting net 29, the third collecting net 291, and the fourth collecting net 292 are all nitinol filter screens, and heparin coatings are sprayed on the surfaces of the first collecting net 23, the second collecting net 29, the third collecting net 291, and the fourth collecting net 292.
In the embodiment, the nitinol alloy filter screen has good shape memory property, superelasticity, corrosion resistance and soft correcting force, the opening effect of the first collection net 23, the second collection net 29, the third collection net 291 and the fourth collection net 292 is ensured, the capture efficiency of blood clots and emboli is ensured, the condition of missed capture is avoided, and the heparin coating aims to keep the first collection net 23, the second collection net 29, the third collection net 291 and the fourth collection net 292 open and prevent a patient from generating systemic reaction.
As a specific technical solution of this embodiment, the first collecting net 23, the third collecting net 291, and the fourth collecting net 292 are all arranged in an inverted cone shape, and the second collecting net 29 is arranged in an arch shape.
In this embodiment, collection net 23 that the back taper set up can with the perfect adaptation of the inner wall of subclavian artery, guaranteed the collection effect, collect net three 291 and collect net four 292 simultaneously and increase the collection space for the collection net two 29 of hugging closely the aortic arch inner wall, collect net three 291 and collect net four 292 simultaneously and can place inside vertebral artery and carotid.
When the collecting device is used, the collecting net I23, the collecting net II 29, the collecting net III 291 and the collecting net IV 292 are extruded to the inside of the catheter II 21 outside the body, enter the inside of the subclavian artery and the aortic arch in sequence through the catheter I1, the positioning guide wire 24 is pushed to enable the positioning part 27 and the elastic part 26 to enter the inside of the aortic arch, the elastic part 26 deforms to drive the positioning part 27 and the collecting net II 29 to be tightly attached to the inner wall of the aortic arch, meanwhile, the collecting net III 291 and the collecting net IV 292 are unfolded to enter the inside of the vertebral artery and the carotid artery, the positioning guide wire 24 is continuously pushed to enable the collecting net I23 to enter the inside of the subclavian artery and be unfolded to be attached to the inner wall of the subclavian artery, meanwhile, the catheter III 22 can be pushed to drive the collecting net I23 to move downwards, the situation that the collecting net I23 cannot be unfolded due to the fact that the tightening wire 232 is tightened is avoided, blood clots and emboli generated in the operation enter the collecting net I23, When the collection assembly 2 needs to be taken out, the third guide tube 22 is firstly pulled to enable the third guide tube 22 to drive the first collection net 23 to move upwards, the first collection net 23 pulls the tightening wires 232 through the first closing wires 231 when moving upwards, the four staggered tightening wires 232 are stretched by upward traction force and attached to the positioning guide wire 24, the first closing wires 231 are deformed and closed, blood clots and emboli collected inside are prevented from being separated, the third guide tube 22 drives the connecting wires 221 to move upwards while moving upwards, the first collection net 23 and the second collection net 29 are simultaneously tightened, the connecting wires 221 slide inside the guide holes 272 when moving upwards, the guide blocks are matched with the guide holes 272 to guide the connecting wires 221, meanwhile, the connecting wires 221 pull the second closing wires 28 through the bending portions 281, and the two second closing wires 28 move relatively and are attached to each other, therefore, the situation that blood clots and emboli inside the collection net II 29 are separated when the collection net II 29 is taken out is avoided, when the collection net I23 and the collection net II 29 finish closing up, the catheter III 22 and the positioning guide wire 24 can be drawn together, the collection net I23 and the collection net II 29 enter the catheter I1, the catheter I1 can be taken out of the body, and the operation of the device is completed through the above.
To sum up, this brain protection system through setting up collection subassembly 2, draws pipe three 22 earlier, collects and draws tight silk 232 through a 231 pulling of binding off silk when net 23 rebound, and four crisscross tight silks 232 that set up receive ascending traction force and begin to tighten up and laminate with location seal wire 24 for binding off silk 231 warp closed, and the blood clot and the embolus of having avoided inside collection break away from out, compares in conventional filter screen nature cerebral embolism protection device, and the device has effectively guaranteed the collection effect.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A brain protection system comprising a first catheter (1) and a second collection assembly (2) for collecting blood clots and emboli, characterized in that: the collecting component (2) is movably arranged inside the catheter I (1), the collecting component (2) comprises a catheter II (21), a catheter III (22) is movably arranged inside the catheter II (21), a connecting wire (221) is arranged at the bottom end of the catheter III (22), a collecting net I (23) is arranged at the bottom end of the catheter III (22), the collecting net I (23) is used for intercepting internal emboli and blood clots entering subclavian arteries, a tightening wire (232) is arranged at the bottom of the collecting net, a positioning guide wire (24) is movably arranged inside the catheter III (22), a fixing block (25) is fixedly arranged on the surface of the positioning guide wire (24), the bottom end of the tightening wire (232) is fixedly connected with the top of the fixing block (25), an elastic part (26) is arranged at the bottom of the positioning guide wire (24), and a positioning part (27) is fixedly arranged at one end, far away from the positioning guide wire (24), of the elastic part (26), the surface of location portion (27) is provided with collects net two (29), collect net two (29) and be used for collecting the inside embolus and the blood clot of aortic arch, the one side of collecting net two (29) is provided with in proper order and collects net three (291) and collects the net silk, collect net two (29) and collect net three (291) and all be linked together with collection net two (29), it is used for collecting the inside blood clot and the embolus that get into vertebral artery and carotid respectively to collect net three (291) and collect net four (292), the surface of collecting net three (291) is provided with binding off silk two (28), binding off silk two (28) are connected with connecting wire (221) transmission.
2. A brain protection system according to claim 1, wherein: the number of the tightening wires (232) is four, and every two tightening wires (232) are used as a group, and the two tightening wires (232) are arranged in a mutually staggered mode.
3. A brain protection system according to claim 1, wherein: the fixing block (25) is internally provided with a fixing hole (251), and the inside of the fixing hole (251) is movably sleeved with the surface of the connecting wire (221).
4. A brain protection system according to claim 1, wherein: the surface fixing of location seal wire (24) is provided with connecting plate (241), connecting hole (242) have been seted up to the inside of connecting plate (241), the inside and connecting wire (221) of connecting hole (242) are to surface activity cup joint, connecting plate (241) are located fixed block (25) below.
5. A brain protection system according to claim 1, wherein: the surface of location seal wire (24) is provided with development sign (243), development sign (243) are located the below of connecting plate (241), the surface of location portion (27) is provided with development sign two (273).
6. A brain protection system according to claim 1, wherein: the bottom of the collecting net I (23) is provided with a closing-up wire I (231), and the top end of the closing-up wire (232) is fixedly connected with the surface of the closing-up wire I (231).
7. A brain protection system according to claim 1, wherein: the surface of the positioning part (27) is fixedly provided with a guide plate (271), a guide hole (272) is formed in the guide plate (271), and the interior of the guide hole (272) is movably sleeved with the surface of the connecting wire (221).
8. A brain protection system according to claim 1, wherein: one end of the second closing-up wire (28) is fixedly connected with the surface of the positioning portion (27), the other end of the second closing-up wire (28) is fixedly provided with a bending portion (281), and one end, away from the second closing-up wire (28), of the bending portion (281 is fixedly connected with one end, away from the third catheter (22), of the connecting wire (221).
9. A brain protection system according to claim 1, wherein: the first collecting net (23), the second collecting net (29), the third collecting net (291) and the fourth collecting net (292) are all nitinol filter screens, and heparin coatings are sprayed on the surfaces of the first collecting net (23), the second collecting net (29), the third collecting net (291) and the fourth collecting net (292).
10. A brain protection system according to claim 1, wherein: collect net one (23), collect net three (291) and collect net four (292) and all be the back taper setting, it is the arch setting to collect net two (29).
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| CN202110414460.9A CN113229886B (en) | 2021-04-16 | 2021-04-16 | Brain protection system |
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| CN202110414460.9A CN113229886B (en) | 2021-04-16 | 2021-04-16 | Brain protection system |
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| CN113229886B (en) | 2022-07-01 |
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