CN111839659A - Suction catheter device for intracranial large vessel embolism - Google Patents
Suction catheter device for intracranial large vessel embolism Download PDFInfo
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- CN111839659A CN111839659A CN202010715460.8A CN202010715460A CN111839659A CN 111839659 A CN111839659 A CN 111839659A CN 202010715460 A CN202010715460 A CN 202010715460A CN 111839659 A CN111839659 A CN 111839659A
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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
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22094—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 for crossing total occlusions, i.e. piercing
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Abstract
The invention relates to a suction catheter device for intracranial large vessel embolism, and belongs to the technical field of medical instruments. The device comprises a pushing rod, a pushing wire, a sliding ring, a first developing ring, a second developing ring and a suction conduit; a push rod is arranged in the suction catheter in a penetrating way; a pushing wire parallel to the pushing rod is arranged on the outer side of the pushing rod; the end head of the far end of the push rod is connected with one end of the push wire, a movable sliding ring is sleeved on the push rod outside the suction catheter, the push wire between the connecting point of the sliding ring and the end head of the push rod forms a spiral cone-shaped bolt breaking structure, and developing rings are arranged at two ends of the spiral cone-shaped structure. The invention solves the problems of large thrombus taking difficulty and long suction time for large hard thrombus during suction and suction thrombus operation of stroke patients, and has good thrombus crushing effect; the escape of the broken thrombus can be prevented; the expansion diameter of the nickel-titanium wire for the bolt breaking is adjustable, and the conical spiral structure with adjustable spiral outer diameter, length and pitch is easy to release and recycle.
Description
Technical Field
The invention relates to a suction catheter device for intracranial large vessel embolism, and belongs to the technical field of medical instruments.
Background
The characteristics of cerebral apoplexy are: high morbidity, high morbidity and high disability rate. The annual incidence rate of urban cerebrovascular diseases in China is 219/10 ten thousand, the annual incidence rate in rural areas is 185/10 ten thousand, and the annual incidence rate is increased year by year. The prevalence rate of cerebrovascular disease increases from 5.9 to 9.7 per thousand from 1998 to 2008. In patients with a viable cerebrovascular disease, about three-quarters of the patients lose labor capacity to varying degrees. There are reports that 80% of stroke patients have varying degrees of limb dysfunction, of which 43.7% cannot take care of their lives.
rt-PA thrombolytic by intravenous injection is the only currently proven effective acute treatment for cerebral infarction. However, the intravenous thrombolytic therapy has long time, great damage to ischemic brain tissue and bleeding risk, and very low recanalization rate; the recanalization rate of basilar artery thrombolysis is only about 30%, the recanalization rate of lesion thrombolysis at the tail end of carotid artery is only 6%, and the recanalization rate of common carotid artery thrombolysis is only about 27%. And the time window for intravenous thrombolysis is only about 4 hours. As can be seen from the above, the single use of venous thrombolysis for cerebral artery occlusion is far from sufficient, and the single use of venous thrombolysis is not sufficient to meet the actual clinical requirements.
The mechanical thrombus extraction is to convey a thrombus extractor to a lesion position and then extract thrombus out of a body through a sheath tube, and the mechanical thrombus extraction comprises the following methods: the method has the advantages that thrombus removal is thorough, but the injury to the vascular wall is excessive, so that various complications are easily caused; the method has the advantages that the operation difficulty is high, the laser energy is ineffective when the laser energy is too low, the blood vessel is damaged when the energy is too high, and various inflammations are caused; although the operation is simple, the thrombus-capturing net cannot be used in intracranial stenotic vessels due to large volume, and the time consumption is relatively long.
Suction embolus is a new embolus extraction means which is being developed at present, and the time from puncture of femoral artery to reperfusion can be reduced. However, for larger hard embolus, the difficulty of embolus removal is high due to the limitation of the inner diameter of the suction catheter, and the suction time is long. In order to reduce the thrombus extraction time for large hard thrombus, the technical field needs an aspiration catheter device for aspirating intracranial large thrombus.
Disclosure of Invention
The invention aims to solve the technical problems of high thrombus taking difficulty and long suction time for large hard thrombus during thrombus suction and suction operation of stroke patients.
In order to solve the above problems, the present invention provides a suction catheter device for intracranial vascular embolization, which comprises a push rod, a push wire, a sliding ring, a first developing ring, a second developing ring and a suction catheter; a push rod penetrates through the suction catheter; a pushing wire parallel to the central shaft of the pushing rod is arranged on the outer side of the pushing rod in the suction catheter; the pushing rod penetrates through the end head part of one end, far away from an operator, of the suction catheter and is connected with one end of the pushing wire, a sliding ring capable of moving on the pushing rod is sleeved on the pushing rod on the outer side of one end, far away from the operator, of the suction catheter, and the sliding ring is fixedly connected with the pushing wire; the connection point of the pushing wire and the far end of the pushing rod is provided with a first developing ring, and the connection part of the pushing wire and the sliding ring is provided with a second developing ring.
Preferably, the pushing wire between the sliding ring and the first developing ring is in a spiral cone-shaped structure with a pushing rod as a central shaft; the pushing wire of the spiral cone-shaped structure is a conical spiral wire.
Preferably, a third fixing ring fixedly connected with the pushing rod and used for limiting the moving distance of the sliding ring is arranged on the pushing rod on one side of the sliding ring close to the operator.
Preferably, the third fixing ring is provided with a pushing wire in a penetrating way.
Preferably, the third fixing ring is provided with a fixing ring fixedly connected with the pushing rod, and the fixing ring is used for penetrating through the pushing rod to push the wires and ensuring the pushing radial force of the pushing wires.
Preferably, the number of said fixing rings is greater than or equal to 2.
Preferably, the total stretching length of the tapered spiral wire subjected to shaping treatment is set to be 2-10cm, the maximum diameter of the shaped spiral cone structure is set to be 2-7mm, and the length of the spiral cone structure is set to be 1-6 cm.
Preferably, the length of the pushing wire is greater than that of the pushing rod, and the length of the pushing rod is set to be 90-160 cm.
Preferably, the pushing rod and the pushing wire are made of nickel titanium wires.
Compared with the prior art, the invention has the following beneficial effects:
the invention solves the problems of large thrombus taking difficulty and long suction time for large hard thrombus during the operation of sucking the thrombus by stroke patients, and can reduce the suction time for the large hard thrombus and the hard thrombus; the thrombus breaking effect is good; the escape of the broken thrombus can be prevented; the auxiliary broken suppository device can smoothly process large suppositories and hard suppositories, and then the processed broken suppositories are sucked by the suction catheter; the auxiliary bolt breaking device has strong breaking capacity on hard bolts; the head end of the auxiliary thrombus crushing device can easily pass through the large thrombus; the bolt breaking device is convenient to use and easy to control, the expansion diameter of the nickel-titanium wire for bolt breaking is adjustable, and the conical spiral nickel-titanium wire can be easily released and recycled; the formed conical spiral structure can regulate and control the external diameter size, length and pitch of the spiral.
Drawings
FIG. 1 is a schematic structural view of a distal end of a push wire of an aspiration catheter device for intracranial macrovascular embolization, which forms a tapered spiral structure for thrombus breakage;
FIG. 2 is a schematic view of a tapered spiral wire at the end of a pusher wire of an aspiration catheter device for intracranial macrovascular embolization of the present invention in a configuration in which the wire is stretched in a straight line;
reference numerals: 1. a push rod; 2. pushing the wires; 3. a slip ring; 4. a conical helical wire; 5. a first developing ring; 6. a second developing ring; 7. fixing a ring III; 8. a suction catheter; 9. a first fixing ring; 10. a second fixing ring; 11. a push rod proximal end; 12. a push rod distal end.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in figures 1 and 2, the invention provides a suction catheter device for intracranial large vessel embolism, which comprises a push rod 1, a push wire 2, a sliding ring 3, a first developing ring 5, a second developing ring 6 and a suction catheter 8; a push rod 1 penetrates through the suction catheter 8; a push wire 2 parallel to the central shaft of the push rod 1 is arranged outside the push rod 1 in the suction catheter 8; the pushing rod 1 penetrates through the end head part of the pushing rod far end 12 of the end, far away from an operator, of the suction catheter 8 to be connected with one end of the pushing wire 2, a sliding ring 3 capable of moving on the pushing rod 1 is sleeved on the pushing rod 1 outside the end, far away from the operator, of the suction catheter 8, and the sliding ring 3 is fixedly connected with the pushing wire 2; a first developing ring 5 is arranged at the connecting point of the pushing wire 2 and the far end of the pushing rod 1, and a second developing ring 6 is arranged at the connecting point of the pushing wire 2 and the sliding ring 3. The pushing wire 2 between the sliding ring 3 and the developing ring I5 is set to be a spiral cone structure taking the pushing rod 1 as a central shaft; the pushing wire 2 of the spiral-cone structure is set as a conical spiral wire 4. A third fixing ring 7 which is fixedly connected with the pushing rod 1 and used for limiting the moving distance of the sliding ring 3 is arranged on the pushing rod 1 at one side of the sliding ring 3 close to an operator. The third fixing ring 7 is provided with a push wire 2 in a penetrating way. The pushing rod 1, which is close to one side of the operator, of the third fixing ring 7 is provided with a fixing ring fixedly connected with the pushing rod 1, and the fixing ring is used for penetrating through the pushing wire 2 and ensuring that the pushing wire 2 pushes radial force. The number of the fixing rings is more than or equal to 2, a first fixing ring 9 is arranged on the pushing rod 1 at the proximal end 11 of the pushing rod, and a second fixing ring 10 is arranged on the pushing rod 1 between the first fixing ring 9 and a third fixing ring 7; the total length of the tapered spiral wire 4 subjected to the shaping treatment is set to 2-10cm, the maximum diameter of the shaped spiral cone structure is set to 2-7mm, and the length of the spiral cone structure is set to 1-6 cm. The length of the push wire 2 is larger than that of the push rod 1, and the length of the push rod 1 is set to be 90-160 cm. The material of the push rod 1 and the push wire 2 is nickel titanium wire.
The invention mainly comprises two parts: a suction duct 8 and an auxiliary embolus crushing device; the auxiliary device mainly comprises a pushing rod 1, a pushing wire 2, a fixing ring, a sliding ring 3, a developing ring and a conical spiral structure.
The suction duct 8 is responsible for providing the negative pressure; the auxiliary device mainly plays a role in breaking thrombus and preventing thrombus from escaping. During the use, suction catheter 8 puts in place with the auxiliary device of tensile state in step, then with push rod 1 propelling movement to thrombus department, the propelling movement pushes away a silk 2, makes the nickel titanium silk become the toper helical structure, and rotatory toper helical structure smashes the hard bolt, then with push rod 1 of tensile state to thrombus distal end blood vessel department, then the propelling movement pushes away a silk 2, makes the release of toper helical structure, and suction catheter 8 begins to aspirate broken thrombus.
The functions of each structural part are as follows:
1. the push wire 2 can control the sliding ring 3 to freely slide on the push rod 1;
2. under the control of the pushing wire 2, the conical spiral wire 4 can freely stretch and retract, and the total length, the thread pitch and the like of the conical spiral wire 4 can be controlled;
3. developing rings are arranged at two ends of the conical spiral wire 4, and the length of the conical nickel-titanium wire can be clearly observed through the developing ring I5 and the developing ring II 6;
4. the maximum diameter of the conical spiral wire 4 can be limited by shaping treatment;
5. the third push rod fixing ring 7 can limit the maximum stretching length of the conical spiral wire 4 and prevent the tip from tilting due to over-pulling of the thrust wire feeding 2;
6. the push rod 1 is provided with a plurality of fixing rings, which can ensure the transmission of the radial force of the push wire 2.
The first embodiment is as follows:
1. the pushing rod 1 and the pushing wire 2 are made of nickel titanium wires, and the length of the pushing wire 2 is larger than that of the pushing rod 1;
2. the conical spiral nickel-titanium wire 4 is subjected to shaping treatment, the total stretching length is 5cm, the maximum shaping diameter is 5mm, and the length is 3 cm;
3. two ends of the conical spiral nickel-titanium wire 4 are respectively provided with a fixed developing ring, a first developing ring 5 and a second developing ring 6;
4. one end of the conical spiral nickel-titanium wire 4 is connected with the farthest end of the far end 12 of the push rod and is fixed on the push rod 1, and the nearest end is fixed on the sliding ring 3;
5. the sliding ring 3 is fixed on the pushing wire 2 and can freely slide on the pushing rod 1;
6. the number of the fixing rings is 3, the fixing ring III 7 is fixed at a position 2mm close to the near end 11 of the push rod in a fully stretched state of the conical nickel-titanium wire 4, so that the push wire 2 is prevented from being stretched too much, and the fixing ring I9 is fixed at a position 10cm away from one end 11 of the push rod 1; a second fixing ring 10 is arranged on the pushing rod between the first fixing ring 9 and the third fixing ring 7.
7. The length of the push rod 1 is 150 cm;
example two:
1. the pushing rod 1 and the pushing wire 2 are made of nickel titanium wires, and the length of the pushing wire 2 is larger than that of the pushing rod 1;
2. the conical spiral nickel-titanium wire 4 is subjected to shaping treatment, the total stretching length is 4cm, the maximum shaping diameter is 3mm, and the length is 2 cm;
3. two ends of the conical spiral nickel-titanium wire 4 are respectively provided with a fixed developing ring, a first developing ring 5 and a second developing ring 6;
4. one end of the conical spiral nickel-titanium wire 4 is connected with the farthest end of the far end 12 of the push rod and is fixed on the push rod 1, and the nearest end is fixed on the sliding ring 3;
5. the sliding ring 3 is fixed on the pushing wire 2 and can freely slide on the pushing rod 1;
6. the number of the fixing rings is 5, the fixing ring III 7 is fixed at a position which is 2mm close to the near end 11 of the pushing rod under the complete stretching state of the conical nickel-titanium wire, so that the pushing wire is prevented from being stretched too much, and the fixing ring I9 is fixed at a position which is 15cm away from one end of the pushing rod near end 11 of the pushing rod;
7. the length of the push rod is 130 cm;
example three:
1. the pushing rod 1 and the pushing wire 2 are made of nickel titanium wires, and the length of the pushing wire 2 is larger than that of the pushing rod 1;
2. the conical spiral nickel-titanium wire 4 is subjected to shaping treatment, the total stretching length is 10cm, the maximum shaping diameter is 4mm, and the length is 6 cm;
3. two ends of the conical spiral nickel-titanium wire 4 are respectively provided with a fixed developing ring, a first developing ring 5 and a second developing ring 6;
4. one end of the conical spiral nickel-titanium wire 4 is connected with the farthest end of the far end 12 of the push rod and is fixed on the push rod 1, and the nearest end is fixed on the sliding ring 3;
5. the sliding ring 3 is fixed on the pushing wire 2 and can freely slide on the pushing rod 1;
6. the number of the fixing rings is 8, and the third fixing ring 7 is fixed at a position 2mm close to the near end 11 of the pushing rod in a fully stretched state of the conical nickel-titanium wire, so that the pushing wire is prevented from being stretched too much; the first fixing ring 9 is fixed at the position, which is 5cm away from one end of the push rod, of the near end 11 of the push rod.
7. The length of the pushing rod is 160 cm;
while the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (9)
1. A suction catheter device for intracranial macrovascular embolization, comprising: the device comprises a pushing rod, a pushing wire, a sliding ring, a first developing ring, a second developing ring and a suction conduit; a push rod penetrates through the suction catheter; a pushing wire parallel to the central shaft of the pushing rod is arranged on the outer side of the pushing rod in the suction catheter; the pushing rod penetrates through the end head part of one end, far away from an operator, of the suction catheter and is connected with one end of the pushing wire, a sliding ring capable of moving on the pushing rod is sleeved on the pushing rod on the outer side of one end, far away from the operator, of the suction catheter, and the sliding ring is fixedly connected with the pushing wire; the connection point of the pushing wire and the far end of the pushing rod is provided with a first developing ring, and the connection part of the pushing wire and the sliding ring is provided with a second developing ring.
2. A suction catheter device for intracranial macrovascular embolization according to claim 1, wherein: the pushing wire between the sliding ring and the first developing ring is of a spiral conical structure with a pushing rod as a central shaft; the pushing wire of the spiral cone-shaped structure is a conical spiral wire.
3. A suction catheter device for intracranial macrovascular embolization according to claim 1, wherein: and a third fixing ring fixedly connected with the pushing rod and used for limiting the moving distance of the sliding ring is arranged on the pushing rod on one side of the sliding ring close to the operator.
4. A suction catheter device for intracranial macrovascular embolization according to claim 3, wherein: and a pushing wire penetrates through the third fixing ring.
5. A suction catheter device for intracranial macrovascular embolization according to claim 4, wherein: the third fixing ring is provided with a fixing ring fixedly connected with the pushing rod and used for penetrating and pushing the wires and ensuring the pushing radial force of the pushing wires, wherein the third fixing ring is close to the pushing rod on one side of the operator.
6. A suction catheter device for intracranial macrovascular embolization according to claim 5, wherein: the number of the fixing rings is more than or equal to 2.
7. A suction catheter device for intracranial macrovascular embolization according to claim 2, wherein: the stretching total length of the conical spiral wire subjected to shaping treatment is set to be 2-10cm, the maximum diameter of the shaped spiral cone-shaped structure is set to be 2-7mm, and the length of the spiral cone-shaped structure is set to be 1-6 cm.
8. A suction catheter device for intracranial macrovascular embolization according to claim 1, wherein: the length of the push wire is greater than that of the push rod, and the length of the push rod is set to be 90-160 cm.
9. A suction catheter device for intracranial macrovascular embolization according to claim 1, wherein: the push rod and the push wire are made of nickel-titanium wires.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715460.8A CN111839659A (en) | 2020-07-23 | 2020-07-23 | Suction catheter device for intracranial large vessel embolism |
| CN202210019817.8A CN114246638A (en) | 2020-07-23 | 2020-07-23 | Suction catheter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715460.8A CN111839659A (en) | 2020-07-23 | 2020-07-23 | Suction catheter device for intracranial large vessel embolism |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210019817.8A Division CN114246638A (en) | 2020-07-23 | 2020-07-23 | Suction catheter device |
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| Publication Number | Publication Date |
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| CN111839659A true CN111839659A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210019817.8A Pending CN114246638A (en) | 2020-07-23 | 2020-07-23 | Suction catheter device |
| CN202010715460.8A Pending CN111839659A (en) | 2020-07-23 | 2020-07-23 | Suction catheter device for intracranial large vessel embolism |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210019817.8A Pending CN114246638A (en) | 2020-07-23 | 2020-07-23 | Suction catheter device |
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| US4706671A (en) * | 1985-05-02 | 1987-11-17 | Weinrib Harry P | Catheter with coiled tip |
| EP1452142A1 (en) * | 1996-07-25 | 2004-09-01 | Boston Scientific Limited | Embolism treatment device |
| EP2098179A1 (en) * | 1996-02-02 | 2009-09-09 | The Regents of the University of California | Clot capture coil |
| CN103370019A (en) * | 2010-11-30 | 2013-10-23 | 环球科技2000私人有限公司 | Device for retrieving a body from a tubular structure |
| CN204158450U (en) * | 2014-07-17 | 2015-02-18 | 徐浩 | From the broken aspirator of swollen spiral thrombosis |
| US20170231648A1 (en) * | 2000-06-29 | 2017-08-17 | Concentric Medical, Inc. | Systems, methods and devices for removing obstructions from a blood vessel |
| CN111265279A (en) * | 2018-12-04 | 2020-06-12 | 先健科技(深圳)有限公司 | Thrombus taking device and thrombus taking system |
| CN111345869A (en) * | 2018-12-20 | 2020-06-30 | 先健科技(深圳)有限公司 | Thrombus taking device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE58906466D1 (en) * | 1988-03-04 | 1994-02-03 | Angiomed Ag | Method and device for removing deposits in vessels and organs of living beings. |
| CN108904008A (en) * | 2018-08-14 | 2018-11-30 | 上海微密医疗科技有限公司 | A kind of controllable cerebrovascular takes bolt bracket and transport control system |
| CN109350178B (en) * | 2018-12-05 | 2024-10-01 | 上海蓝脉医疗科技有限公司 | Thrombolysis device |
| CN110522539B (en) * | 2019-09-27 | 2020-12-04 | 苏州中天医疗器械科技有限公司 | Thrombus taking-out device, method and application thereof |
| CN111419338A (en) * | 2020-04-14 | 2020-07-17 | 玮铭医疗器械(上海)有限公司 | Balloon suction catheter device for intracranial thrombus removal |
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2020
- 2020-07-23 CN CN202210019817.8A patent/CN114246638A/en active Pending
- 2020-07-23 CN CN202010715460.8A patent/CN111839659A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706671A (en) * | 1985-05-02 | 1987-11-17 | Weinrib Harry P | Catheter with coiled tip |
| EP2098179A1 (en) * | 1996-02-02 | 2009-09-09 | The Regents of the University of California | Clot capture coil |
| EP1452142A1 (en) * | 1996-07-25 | 2004-09-01 | Boston Scientific Limited | Embolism treatment device |
| US20170231648A1 (en) * | 2000-06-29 | 2017-08-17 | Concentric Medical, Inc. | Systems, methods and devices for removing obstructions from a blood vessel |
| CN103370019A (en) * | 2010-11-30 | 2013-10-23 | 环球科技2000私人有限公司 | Device for retrieving a body from a tubular structure |
| CN204158450U (en) * | 2014-07-17 | 2015-02-18 | 徐浩 | From the broken aspirator of swollen spiral thrombosis |
| CN111265279A (en) * | 2018-12-04 | 2020-06-12 | 先健科技(深圳)有限公司 | Thrombus taking device and thrombus taking system |
| CN111345869A (en) * | 2018-12-20 | 2020-06-30 | 先健科技(深圳)有限公司 | Thrombus taking device |
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| Publication number | Publication date |
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| CN114246638A (en) | 2022-03-29 |
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Application publication date: 20201030 |