CN115192129A - Thrombus anchoring device and novel mechanical thrombus taking method - Google Patents
Thrombus anchoring device and novel mechanical thrombus taking method Download PDFInfo
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- CN115192129A CN115192129A CN202210878500.XA CN202210878500A CN115192129A CN 115192129 A CN115192129 A CN 115192129A CN 202210878500 A CN202210878500 A CN 202210878500A CN 115192129 A CN115192129 A CN 115192129A
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22001—Angioplasty, e.g. PCTA
-
- 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
- A61B2017/22072—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 an instrument channel, e.g. for replacing one instrument by the other
-
- 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
-
- 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
- A61B2017/2215—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having an open distal end
-
- 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
- A61B2017/2217—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions single wire changing shape to a gripping configuration
Abstract
The invention discloses a thrombus anchoring device which is composed of a first anchoring working section, a connecting section, a second anchoring working section and a conveying section which are sequentially arranged. When the device is not released, the anchoring working section is in a straightened state so as to be conveniently conveyed in the microcatheter to reach the thromboembolic position; after the device is released in place, the first anchoring working section and the second anchoring working section can be spontaneously switched to a coiling state at the far end and the near end of the thrombus respectively, so that the whole body of the thrombus is anchored, the risks of falling, displacement and far-end embolism of the thrombus in the subsequent stent thrombus removal process are reduced, and the thrombus removal success rate is further improved. The invention also provides a novel mechanical thrombus extraction method for cerebral thrombosis, and the thrombus anchoring device is adopted to anchor the whole thrombus by means of expansion of the thrombus extraction support after the head end and the tail end of the thrombus release the disc curve, so as to assist the thrombus extraction support to perform mechanical thrombus extraction operation, and further improve the success rate of thrombus extraction in blood vessels.
Description
Technical Field
The invention relates to the technical field related to medical equipment, in particular to a thrombus anchoring device and a novel mechanical thrombus extraction method.
Background
Acute stroke caused by intracranial large vessel embolism has extremely high disabling and lethal rate, and the current clinical treatment scheme mainly comprises thrombolytic treatment and mechanical thrombus removal treatment. With the development of image imaging and material-related technologies, mechanical embolectomy has the technical advantages of high recanalization rate and obvious improvement of patient prognosis, and gradually becomes a first-line clinical treatment method. The current mechanical embolectomy is mainly completed by using an embolectomy bracket. The general process is as follows: firstly, puncture is carried out through femoral artery, and a guiding catheter system is pushed to the occluded proximal artery; then the micro catheter passes through the thrombus occlusion section under the guidance of the guide wire, and the thrombus removal stent is further introduced through the micro catheter and released at the thrombus; finally, the thrombus is pulled out by withdrawing the thrombus-taking stent, thereby restoring the smoothness of the occluded blood vessel.
The thrombus can be limited by the stent meshes of the thrombus taking stent, and the thrombus is embedded by utilizing the radial supporting force of the metal material, so that the thrombus is pulled out when the stent is withdrawn. However, the thrombus has different textures, and the success rate of the technology for taking out the thrombus by adopting the stent is difficult to ensure. For example, old hard thrombus with high proportion of fiber components has high failure rate when thrombus is taken by using the thrombus taking bracket, and the thrombus is broken and cracked in the thrombus taking process, so that the thrombus taking is incomplete, repeated operation is needed, the risk of thrombus taking operation is increased, and the cracked thrombus can drift to a far-end branch blood vessel along with arterial blood flow in serious conditions, so that complete ischemic necrosis of far-end brain tissue is caused, and the life of a patient is threatened.
In order to improve the mechanical embolectomy treatment method and avoid the above risks as much as possible, the prior art has made improvements on the structure of the embolectomy stent itself, such as changing the diameter, length or wire texture of the embolectomy stent. However, improvements to the thrombectomy support itself have created new problems. For example, the increased diameter stent has poor passability and flexibility, is difficult to reach a target blood vessel, and is more likely to damage the blood vessel during release and pulling, causing adverse reactions such as intimal stripping and even intracranial hemorrhage.
In summary, there is a need in the art to solve the problem of unsatisfactory success rate of mechanical stent embolectomy, and to improve the existing mechanical embolectomy-related devices and methods to increase the success rate and efficiency of embolectomy and reduce the risk of vascular injury and bleeding.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a thrombus anchoring device, which has a first anchoring working section, a connecting section, a second anchoring working section and a conveying section arranged in sequence, and can spontaneously coil at two ends of a thrombus to anchor the thrombus, so as to assist in stent thrombus removal and further improve the success rate of thrombus removal.
The invention also aims to provide a novel mechanical thrombus extraction method, wherein the thrombus anchoring device is adopted to integrally anchor thrombus, and the thrombus extraction bracket is adopted to assist in thrombus extraction operation in the follow-up process, so that the thrombus extraction success rate is improved.
In order to achieve the above object, the present invention provides a thrombus anchoring device, which comprises a first anchoring working section, a connecting section, a second anchoring working section and a conveying section which are arranged in sequence; when the thrombus anchoring device is not released, the first anchoring working section, the connecting section and the second anchoring working section are in a straightened state so as to be conveyed to a thromboembolic lesion site through a microcatheter; after the thrombus anchoring device is released in place, the first anchoring working section and the second anchoring working section can be spontaneously switched to a disc-bent state and are respectively released at the head end and the tail end of the thrombus; the first anchoring working section and the second anchoring working section in the straightening state are straight lines, and the first anchoring working section and the second anchoring working section in the coiling state form an ordered or disordered three-dimensional space structure.
Preferably, the end of the first anchoring working section far away from the connecting section is a first end, and the first end is a blunt head end, so that the risk of vascular injury is reduced.
Preferably, the diameter of the second anchoring working section in the coiled state is not smaller than the diameter of the first anchoring working section.
Preferably, the length of the first anchoring working section in a straightening state is 5-300mm, and the diameter of the first anchoring working section in a coiling state is 1-50mm; the length of the second anchoring working section in a straightening state is 5-300mm, and the diameter of the second anchoring working section in a coiling state is 1-80mm.
Preferably, the connecting section and the conveying section are bendable guide wires.
Preferably, the outer diameter of the thrombus anchoring device is 0.013-0.018".
Preferably, the thrombus anchoring device is externally provided with a guide sheath, when the thrombus anchoring device is not used, the first anchoring working section, the connecting section and the second anchoring working section are positioned in the guide sheath, and the delivery section is partially positioned in the guide sheath; the outer diameter of the guide sheath is 0.020-0.030", and the inner diameter of the guide sheath is 0.013-0.018".
Preferably, the first anchoring working segment, the connecting segment and the second anchoring working segment all have a radiographic marker.
Preferably, the joint of the first anchoring working section and the connecting section is a first junction, and the joint of the second anchoring working section and the connecting section is a second junction; the first junction and the second junction are provided with development marks which are displayed in a protruding mode.
Preferably, the first and second thrombus anchoring sections spontaneously form a helical cylindrical, helical quincunx, hexagnan, etc. orderly coiled three-dimensional structure or a disordered coiled three-dimensional structure in three-dimensional space.
The invention provides a novel mechanical thrombus extraction method, which adopts the thrombus anchoring device and comprises the following steps:
(A) Placing a micro catheter at the head end of the thrombus, pushing the thrombus anchoring device into the micro catheter by using a guide sheath, pushing the near end of a first anchoring working section of the auxiliary thrombus taking device to the head end of the thrombus by using the micro catheter, releasing the first anchoring working section, and anchoring the first anchoring working section to the head end of the thrombus after the first anchoring working section is switched to a coiling state;
(B) Withdrawing the microcatheter, and keeping the connecting section at the middle position of the side part of the thrombus under the condition of keeping the position of the first anchoring working section unchanged;
(C) Releasing the second anchoring working section, and stabilizing the tail end of the thrombus after the second anchoring working section is converted to a coiling state;
(D) Releasing the thrombus taking support to the thrombus by using another microcatheter, so that the far end and the near end of the thrombus taking support are respectively overlapped with the first anchoring working section and the second anchoring working section, releasing the thrombus taking support, and combining a thrombus anchoring device after the support is released to realize the integral anchoring of the thrombus;
(E) And after waiting for 2-8min, withdrawing the thrombus taking support and the thrombus anchoring device conveying section at the same time, and pulling out the thrombus out of the body in a matching way by the aid of the thrombus anchoring device.
Compared with the prior art, the thrombus anchoring device and the novel mechanical thrombus taking method disclosed by the invention have the advantages that: the thrombus anchoring device can effectively anchor thrombus formation, provides effective assistance in the thrombus taking process by using the thrombus taking support, and can effectively increase the thrombus taking success rate and the whole thrombus taking rate by using the thrombus anchoring device; according to the thrombus taking method, before the thrombus taking support is used for operation, the thrombus is anchored by using the thrombus anchoring device, the thrombus taking success rate is higher, the integral thrombus taking rate is higher, and the risk of blood vessel injury and bleeding is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a sectional view showing a thrombus anchoring device according to the present invention.
FIG. 2 is a sectional view showing the thrombus anchoring device in the process of pushing out the introducer sheath.
FIG. 3 is a schematic view showing the construction of a thrombus anchoring device of the present invention.
FIG. 4 is a sectional view showing the thrombus formation anchoring by a thrombus anchoring device of the present invention.
Fig. 5 is a flow chart of a novel mechanical embolectomy method of the present invention.
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.
As shown in fig. 1, a thrombus anchoring device of the present application has a first anchoring working section 11, a connecting section 12, a second anchoring working section 13, and a delivery section 14, which are arranged in this order; when the thrombus anchoring device is not released, the first anchoring working section 11, the connecting section 12 and the second anchoring working section 13 are in a straightened state so as to be delivered to a thromboembolic lesion through a microcatheter; after the thrombus anchoring device is released in place, the first anchoring working section 11 and the second anchoring working section 13 can be spontaneously switched to a disc-bent state and are respectively released at the head end and the tail end of the thrombus; the first anchoring working section 11 and the second anchoring working section 13 in the straightening state are straight lines, and the first anchoring working section 11 and the second anchoring working section 13 in the coiling state form an ordered or disordered three-dimensional space structure. The first and second anchor working segments 11 and 13 in the twisted state have a significantly increased diameter as compared to the first and second anchor working segments 11 and 13 in the straightened state.
Specifically, the first anchoring working section 11 and the second anchoring working section 13 may spontaneously form a coiled three-dimensional structure such as a coiled cylinder, a coiled quincunx, a hexagram, and the like, or a disordered coiled three-dimensional structure in a three-dimensional space. Referring to fig. 4, the first anchoring working section 11 and the second anchoring working section 13 can form a three-dimensional structure at two ends of the thrombus 200 inside the blood vessel 100, so as to anchor the thrombus 200, and play an auxiliary role in subsequent thrombus removal by using a thrombus removal stent, thereby increasing the thrombus removal success rate and the overall thrombus removal rate, helping to reduce the mechanical thrombus removal times, and reducing the risk of blood vessel injury and hemorrhage.
Further, the end of the first anchoring working segment 11 away from the connecting segment 12 is a first end 111, and preferably, the first end 111 is a rounded head end. The first end 11 is a tip which is initially contacted with the blood vessel 100 or the thrombus 200, and the blunt tip can reduce the risk of blood vessel injury bleeding and the probability of puncturing thrombus, and is beneficial to increasing the success rate of thrombus extraction and the overall extraction rate of thrombus.
Preferably, the diameter of the second anchoring working section 13 in the coiling state is not smaller than that of the first anchoring working section 11 in the coiling state, so that the first anchoring working section 11 and the second anchoring working section 13 can not form an obstacle in the embolectomy process. Specifically, the length of the first anchoring working section 11 in a straightening state is preferably 5-300mm, and the diameter of the first anchoring working section 11 in a coiling state is preferably 1-50mm; the length of the second anchoring working section 13 in the straightened state is 5-300mm, and the diameter of the second anchoring working section 13 in the coiled state is 1-80mm.
The connecting section 12 and the conveying section 14 are bendable guide wires and can be bent along with the bending of the catheter or the blood vessel. Preferably, the connecting section 12 has a length of 2-50mm and the conveying section 14 has a length of 500-1000mm.
The thrombus anchoring device can be externally provided with a guide sheath 2, when the thrombus anchoring device is not used, the first anchoring working section 11, the connecting section 12 and the second anchoring working section 13 are positioned inside the guide sheath 2, and the conveying section 14 is partially positioned inside the guide sheath 2.
The guiding sheath 2 is tubular and has a cavity 20, and the two ends of the guiding sheath 2 are respectively a first opening 21 and a second opening 22, the first opening 21 is located at the first end 111, and the second opening 22 is located at the delivery segment 14. Preferably, one third of the delivery segment 14 is located inside the introducer sheath 2. The thrombus anchoring device is inserted into the cavity 20 closely attached to the inner wall of the guide sheath 2, preventing the thrombus anchoring device from being deformed. Preferably, the thrombus anchoring device has an outer diameter of 0.013 to 0.018"; the outer diameter of the introducer sheath 2 is 0.020 to 0.030 "and the inner diameter of the introducer sheath 2 is 0.013 to 0.018".
In order to improve the definition under DSA fluoroscopy during interventional therapy, the first anchoring working section 11, the connecting section 12 and the second anchoring working section 13 are all provided with radiographic markers, so that the operation efficiency and accuracy are improved. Furthermore, the joint of the first anchoring working section 11 and the connecting section 12 is a first junction 112, the joint of the second anchoring working section 13 and the connecting section 12 is a second junction 132, and preferably, the first junction 112 and the second junction 132 have a display mark which is displayed in a protruding manner, so that an operator can conveniently judge the relative position of each section of the thrombus anchoring device 1 and the thrombus 200, and the operation efficiency and accuracy are further improved.
As shown in fig. 5, the present application relates to a novel mechanical thrombus extraction method, which uses the thrombus anchoring device, and comprises the following steps:
(A) Placing a micro catheter at the head end of the thrombus, pushing the thrombus anchoring device into the micro catheter by using a guide sheath, pushing the near end of a first anchoring working section of the auxiliary thrombus taking device to the head end of the thrombus by using the micro catheter, releasing the first anchoring working section, and anchoring the first anchoring working section to the head end of the thrombus after the first anchoring working section is switched to a coiling state;
(B) Withdrawing the microcatheter, and keeping the connecting section at the middle position of the side part of the thrombus under the condition of keeping the position of the first anchoring working section unchanged;
(C) Releasing the second anchoring working section, and stabilizing the tail end of the thrombus after the second anchoring working section is switched to a disc-bending state;
(D) Releasing the thrombus taking support to the thrombus by using another microcatheter, enabling the far end and the near end of the thrombus taking support to be respectively overlapped with the first anchoring working section and the second anchoring working section, releasing the thrombus taking support, and combining a thrombus anchoring device after the support is released to realize integral anchoring of the thrombus;
(E) And after waiting for 2-8min, withdrawing the thrombus taking support and the thrombus anchoring device conveying section simultaneously, and pulling out the thrombus out of the body in a matching manner with the thrombus taking support under the assistance of the thrombus anchoring device.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. The thrombus anchoring device is characterized by comprising a first anchoring working section, a connecting section, a second anchoring working section and a conveying section which are sequentially arranged; when the thrombus anchoring device is not released, the first anchoring working section, the connecting section and the second anchoring working section are in a straightened state so as to be conveyed to a thromboembolic lesion site through a microcatheter; after the thrombus anchoring device is released in place, the first anchoring working section and the second anchoring working section can be spontaneously switched to a coiling state and are respectively released at the head end and the tail end of the thrombus; the first anchoring working section and the second anchoring working section in the straightening state are straight lines, and the first anchoring working section and the second anchoring working section in the coiling state form an ordered or disordered three-dimensional space structure.
2. The thrombus anchoring device of claim 1, wherein the end of the first anchoring working segment distal from the connecting segment is a first end, and the first end is a rounded tip end to reduce the risk of vascular injury.
3. The thrombus anchoring device of claim 1, wherein the diameter of the second anchoring working segment in a serpentine state is not less than the diameter of the first anchoring working segment.
4. The thrombus anchoring device according to claim 3, wherein the first anchoring working segment has a length of 5 to 300mm in a straightened state and a diameter of 1 to 50mm in a twisted state; the length of the second anchoring working section in a straightening state is 5-300mm, and the diameter of the second anchoring working section in a coiling state is 1-80mm.
5. The thrombus anchoring device of claim 1, wherein the connecting segment and the delivery segment are each bendable guide wires.
6. The thrombus anchoring device according to claim 1, wherein the outer diameter of the thrombus anchoring device is 0.013 to 0.018".
7. The thrombus anchoring device according to claim 1, wherein a guide sheath is provided outside the thrombus anchoring device, the first anchoring working section, the connecting section, and the second anchoring working section are located inside the guide sheath, and the delivery section is partially located inside the guide sheath when the thrombus anchoring device is not in use; the outer diameter of the guide sheath is 0.020-0.030 'and the inner diameter of the guide sheath is 0.013-0.018'.
8. The thrombus anchoring device of claim 1, wherein the first anchoring working segment, the connecting segment, and the second anchoring working segment each have a radiographic marker.
9. The thrombus anchoring device of claim 8, wherein the junction of the first working anchoring segment and the connecting segment is a first interface and the junction of the second working anchoring segment and the connecting segment is a second interface; the first junction and the second junction are provided with development marks which are displayed in a protruding mode.
10. The thrombus-anchoring device according to claim 1, wherein the first thrombus-anchoring section and the second thrombus-anchoring section spontaneously form a helical cylindrical shape, a helical quincunx shape, an orderly-curled three-dimensional structure of hexagram or the like or a disordered-curled three-dimensional structure in a three-dimensional space.
11. An embolectomy method, wherein the auxiliary embolectomy device of any one of claims 1 to 10 is used, and the method comprises the steps of:
(A) Placing a micro catheter at the head end of the thrombus, pushing the thrombus anchoring device into the micro catheter by using a guide sheath, pushing the near end of a first anchoring working section of the auxiliary thrombus taking device to the head end of the thrombus by using the micro catheter, releasing the first anchoring working section, and anchoring the first anchoring working section to the head end of the thrombus after the first anchoring working section is switched to a coiling state;
(B) Withdrawing the microcatheter, and keeping the connecting section at the middle position of the side part of the thrombus under the condition of keeping the position of the first anchoring working section unchanged;
(C) Releasing the second anchoring working section, and stabilizing the tail end of the thrombus after the second anchoring working section is converted to a coiling state;
(D) Releasing the thrombus taking support to the thrombus by using another microcatheter, so that the far end and the near end of the thrombus taking support are respectively overlapped with the first anchoring working section and the second anchoring working section, releasing the thrombus taking support, and combining a thrombus anchoring device after the support is released to realize the integral anchoring of the thrombus;
(E) And after waiting for 2-8min, withdrawing the thrombus taking support and the thrombus anchoring device conveying section simultaneously, and pulling out the thrombus out of the body in a matching manner with the thrombus taking support under the assistance of the thrombus anchoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210878500.XA CN115192129A (en) | 2022-07-25 | 2022-07-25 | Thrombus anchoring device and novel mechanical thrombus taking method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210878500.XA CN115192129A (en) | 2022-07-25 | 2022-07-25 | Thrombus anchoring device and novel mechanical thrombus taking method |
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| CN115192129A true CN115192129A (en) | 2022-10-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115919545A (en) * | 2023-02-21 | 2023-04-07 | 微创视神医疗科技(上海)有限公司 | Degradable tympanic membrane stent, delivery device and degradable tympanic membrane stent system |
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2022
- 2022-07-25 CN CN202210878500.XA patent/CN115192129A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115919545A (en) * | 2023-02-21 | 2023-04-07 | 微创视神医疗科技(上海)有限公司 | Degradable tympanic membrane stent, delivery device and degradable tympanic membrane stent system |
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