CN209916104U - Implantable controllable vascular occlusion device - Google Patents
Implantable controllable vascular occlusion device Download PDFInfo
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- CN209916104U CN209916104U CN201721244075.XU CN201721244075U CN209916104U CN 209916104 U CN209916104 U CN 209916104U CN 201721244075 U CN201721244075 U CN 201721244075U CN 209916104 U CN209916104 U CN 209916104U
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- electroactive polymer
- polymer material
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- blood vessel
- occlusion device
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Abstract
The utility model relates to an implantable controllable vascular locking device, which comprises a shell, an actuator and a control module. The housing accommodates a blood vessel and carries an actuator and a control module; the control module provides power and control signals to the actuator; the actuator comprises a slide rail, a roller shaft and an electroactive polymer material, wherein the electroactive polymer material deforms and extends along the slide rail after being electrified, so that the roller shaft is pressed to move along the slide rail, and the roller shaft presses the blood vessel, so that the blood vessel is gradually closed. The utility model is designed aiming at the requirements of treating intracranial aneurysm, cranial base tumor or other brain diseases and the insufficiency of the prior method of blocking lesion blood supply to internal carotid artery before treatment. The device can be completely implanted in the body and wrapped outside the blood vessel, controllably and slowly occlude the internal carotid artery, so that the brain tissue supplying blood to the internal carotid artery can obtain compensated blood supply of other blood vessels, the dependence on the artery is eliminated, and then the internal carotid artery is cut off, so that cerebral infarction is not caused, and conditions are created for disease treatment.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to an implanted controllable blood vessel blocking device.
Background
Intracranial aneurysms occur at 0.4% to 3.6%, with about 10% being giant aneurysms (e.g., giant aneurysms on bed processes). Aneurysms present a risk of rupture, and once ruptured are life threatening and must therefore be actively treated surgically. However, the huge aneurysm is bulky, cannot be inserted into embolism, cannot be clamped and closed by operation, and is very troublesome in treatment. Current treatment strategies typically involve first blocking the internal carotid artery, followed by aneurysm isolation and bypass bridging.
The large skull base tumor surrounding the internal carotid artery has close relationship between the tumor and the internal carotid artery, is difficult to separate, and the internal carotid artery and the branches are difficult to store in the process of removing the tumor, even the internal carotid artery surrounding the tumor and the tumor have to be removed together.
The operation treatment of the two diseases needs to block the internal carotid artery at the side of pathological change, but the internal carotid artery is suddenly clamped or cut off to cause the cerebral tissue supplying blood to the far end of the artery to generate infarction, thereby generating serious consequences.
The traditional remedy method is: before operation, the affected internal carotid artery was pressed in vitro (Matas test), and the common carotid artery was pressed against the 6 th transverse process of cervical vertebra, and the operation was performed several times per day. After a period of repeated training, the establishment of collateral circulation compensation towards the affected side of the internal carotid artery on the contralateral side of the lesion is promoted. If the patient can endure the compression for more than 30min without cerebral ischemia, the patient can be regarded as the contralateral branch is compensated and fully opened, and the condition of cutting off the internal carotid artery on the affected side in the operation is met. In theory, the internal carotid artery on the affected side is cut off at this time, and the distal cerebral ischemic infarction can be avoided. However, this test is performed manually in vitro and has poor reliability, and although the test may pass the cervical crush test, it still has serious reaction after the internal carotid artery is severed.
There are also methods of internal carotid artery occlusion by cervical implantation devices. The internal carotid artery vascular clamping device is implanted into the neck in an operation, but part of the existing device needs to be exposed outside the body, so that the infection risk is high, and the device is not generally applied in clinic.
Yet another approach is to intervene in the intravascular balloon embolization to block arterial blood flow. However, this method only allows a short, one-time vascular occlusion (30 minutes), does not allow a long slow vascular occlusion process, and also presents a risk of thrombosis.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an implantable controllable vascular locking device, the device can satisfy safe block in advance and suffer from side internal carotid artery to overcome the technical problem that exists in the current internal carotid artery block technique effectively.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
an implantable controllable vascular occlusion device comprising a housing, an actuator, and a control module, the housing having a passageway therethrough, the housing being freely openable and closable such that a blood vessel can be received in and removed from the passageway; the control module is used for controlling signals and providing electric energy for the actuator; the actuator is arranged in the shell and comprises a sliding rail, a roller shaft and an electroactive polymer material, wherein the roller shaft can move along the sliding rail, the electroactive polymer material is arranged in the sliding rail, after the actuator is electrified, the electroactive polymer material is deformed and extends along the sliding rail, so that the roller shaft is pressed to move along the sliding rail, and the roller shaft presses a blood vessel contained in the channel during moving, so that the blood vessel is gradually occluded. The locking device can be completely implanted into a body, realizes the controllable and slow locking outside the blood vessel, promotes the brain tissue for supplying blood to the internal carotid artery to obtain compensated blood supply of other blood vessels in the process of gradual artery blocking, and gets rid of the dependence on the internal carotid artery at the affected side. When the device completely occludes the internal carotid artery and the patient can tolerate the device without the appearance of blood deficiency, the internal carotid artery is cut off again, so that cerebral infarction is not caused, and conditions are created for treating diseases.
Further, an opening and a door for opening or closing the opening are provided at a position corresponding to the passage on the housing.
Further, the electroactive polymer material is a multilayer folded electroactive polymer film.
Further, the electroactive polymer material is an electroactive polymer fiber bundle.
Further, the electroactive polymer material is an electroactive polymer film rolled into a cylindrical shape.
Furthermore, the slide rail is also provided with a spring, the spring is used for resisting the stretching force of the electroactive polymer material, and after the pressing of the electroactive polymer material on the roll shaft is relieved, the roll shaft can be reset, and the pressing on blood vessels is relieved.
Further, the spring and the electroactive polymer material are respectively arranged in the sliding rails on two sides of the roller shaft.
Further, the spring and the electroactive polymer material device are arranged in the sliding rail on the same side of the roller shaft, the electroactive polymer material is an electroactive polymer film which is rolled into a cylinder shape, and the electroactive polymer film wraps the spring or the electroactive polymer film device is arranged in the spring.
Further, the spring and the electroactive polymer material device are arranged in the slide rail on the same side of the roller shaft, the electroactive polymer material is an electroactive polymer fiber bundle, and the electroactive polymer fiber bundle is arranged in the spring.
Further, the control module device is arranged on the inner wall of the shell.
Further, the control module comprises a control chip, a voltage conversion module and a battery pack.
Further, the control module is provided with a wireless receiving unit for receiving and identifying the wirelessly transmitted signal.
Further, the shell is further provided with a fixing structure, and the fixing structure is an annular bulge, an annular groove or a tunnel.
The utility model designs a controllable locking device which can be completely implanted in the body and is positioned outside the blood vessel aiming at treating intracranial aneurysm, skull base tumor and the like and relating to the brain disease demand which needs to block the internal carotid artery in the treatment process and the defects of the prior method for blocking the internal carotid artery. The closure device can be completely implanted in vivo, and compared with the closure device which is partially exposed outside the body, the vascular clamping device reduces the risk of wound infection; at the same time the locking device is mounted outside the vessel, avoiding the risk of thrombosis compared to locking the vessel using an intravascular balloon dilation. The device can slowly block the internal carotid artery, and in the process of gradual artery blocking, the brain tissue for supplying blood to the internal carotid artery can obtain compensated blood supply of other blood vessels, so that the device gets rid of dependence on the internal carotid artery, and then the internal carotid artery is cut off, so that cerebral infarction cannot be caused, and conditions are created for disease treatment. Meanwhile, the device is internally provided with a safety design, and can freely adjust the contraction and the extension of the actuator through external program control, if the locking is too fast to cause uncomfortable symptoms, the locking speed can be controlled through the external program control or the actuator is contracted to relieve the vascular compression, or the power supply is cut off, so that the spring automatically pulls the roller shaft to reset, the effect of ensuring the safety of the locking process is achieved, and the safety of a patient is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the present invention from a top view relative to fig. 1;
FIG. 3 is a schematic view of the A-A plane of FIG. 1;
fig. 4 is a schematic structural view of the spring and the electroactive polymer material of the present invention in the slide rail on the same side of the roller shaft;
FIG. 5 is a schematic structural view of the fixing structure of the present invention when the fixing structure is an annular protrusion;
fig. 6 is a schematic structural view of the fixing structure of the present invention being an annular groove;
fig. 7 is a schematic structural view of the fixing structure of the present invention when it is a tunnel;
wherein the part numbers in the figures are represented as:
1. the blood vessel is connected with the control module, the shell is connected with the control module, the blood vessel is connected with the control module, the channel is connected with the channel, the roller is connected with the roller, the roller is connected with the channel.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. The principles and features of the present invention are described below in conjunction with the following drawings, which illustrate, without conflict, that the embodiments and features of the embodiments of the present invention may be combined with each other. The examples given are only for explaining the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, the implantable controllable vascular occlusion device includes a housing 1, an actuator, and a control module 3. The shell 1 is used for carrying the control module 3 and the actuator, a channel 11 which penetrates through the shell 1 is arranged in the shell 1, and the shell 1 can be freely opened or closed, so that the blood vessel 4 can be put into or removed from the channel 11; the control module 3 is adapted to controllably supply electrical energy to the actuator, which is deformable upon energization and compresses the blood vessel 4 received in the housing 1, so that the blood vessel 4 is gradually occluded.
The housing is made of a hard material for resisting pressure applied to the device by external muscles or accidental impacts, preventing the housing from being deformed under pressure, and thus providing a protective effect on the internal structure of the device. The channel 11 is enclosed by the shell 1 and is communicated with the inner cavity of the shell 1, and the bottom of the channel 11 can be designed into an arc shape in order to bear the blood vessel 4. An opening and a door 12 for opening or closing the opening are arranged on the shell 1 at a position corresponding to the channel 11, the door 12 is movably connected with the shell 1 through a connecting piece, so that the shell 1 is convenient to open and close, and the operation time for taking the blood vessel 4 into or removing the channel 11 is shortened.
As shown in fig. 5 to 7, in order to prevent the locking device from sliding off in the body, a fixing structure for fixing with the surrounding muscle may be provided on the housing 1. Specifically, the fixing structure may be that the surface of the housing 1 is provided with an annular protrusion 25, and the locking device is sutured with the surrounding muscles through the annular protrusion 25, so as to fix the position of the locking device in the body; or the outer surface of the shell 1 is provided with an annular groove 26, and the shell 1 and the muscle are sutured and fixed after the suture line and the like surround the shell through the annular groove 26; the fixing structure may be a tunnel 27 opened on the housing 1, and outlets at both ends of the tunnel 27 are provided on the outer surface of the housing 1, and a suture or the like is passed through the tunnel 27 and sutured with the muscle, thereby fixing the position of the locking device in the body.
The utility model discloses there is not special requirement to the appearance of casing 1, but if the casing has cylindric, the ellipse circular or other no edges and corners's of end cover smooth structure for both ends, resistance and friction when can reduce the implantation human body also can reduce its damage of implanting to probably causing for surrounding tissue after the human body to reduce the uncomfortable sense and the foreign matter sense that bring.
The control module 3 is used for controlling signals and supplying electric energy to the actuator in an adjustable and controllable mode, the control module 3 comprises a control chip, a voltage conversion diaphragm and a battery pack, wherein the control chip is used for receiving, processing, storing and outputting the control signals, the voltage conversion module is used for converting the output voltage of the battery so as to meet the driving voltage requirement of the electroactive polymer material, and the battery pack is used for supplying electric energy to the control module 3 and the actuator.
A control program can be preset in the control module 3, so that the utility model can automatically control the locking of the blood vessel 4 according to a preset mode (preset time, preset locking speed, locking degree and the like) after being implanted into a human body; the locking process of the blood vessel 4 can be flexibly adjusted according to the condition of a patient, a wireless receiving module can be arranged in the control module 3 and used for identifying and receiving a signal transmitted wirelessly and transmitting the identified signal to a control chip, so that the locking process of the blood vessel 4 can be wirelessly controlled in real time; units for measuring, analyzing and processing relevant parameters and feeding back to the actuator can be additionally arranged in the control module 4, so that the locking device can adjust the locking process according to the measured data, and the self-adaptability is enhanced.
Electroactive polymers (EAPs), also known as artificial muscle materials, are stretchable under the action of an applied electric field, can be repeatedly deformed by the application of an external voltage, can recover their original shape when the applied voltage is reduced or released, and can be fine-tuned by adjusting the applied voltage. The present invention utilizes the above-described properties of electroactive polymers to construct an actuator.
The actuator means is within the housing 1 and comprises a slide rail 21, a roller shaft 22 and an electroactive polymer material 23.
The slide rails 21 are provided in two and correspondingly arranged on both side inner walls of the housing 1, and the slide rails 21 are obliquely provided above the passage 11.
Trunnions are respectively arranged at two ends of the roll shaft 22, and the two trunnions are respectively arranged in the two slide rails 21, so that the roll shaft 22 can move along the slide rails 21, and can extrude the blood vessel 4 contained in the channel 11 in the process of downward sliding of the roll shaft 22, thereby gradually locking the blood vessel 4.
The electroactive polymer material 23 can also be an electroactive polymer film that is rolled into a cylindrical shape. The axial direction of the cylindrical electroactive polymer film is consistent with the extending direction of the slide rail 21, after the actuator is electrified, the cylindrical electroactive polymer film is deformed and extends along the slide rail 21, so that the roller shaft 22 is pushed to move downwards along the slide rail 21, and the roller shaft 22 extrudes the blood vessel 4 contained in the channel 11 in the downward moving process, so that the blood vessel 4 is gradually closed. After the electrically active polymer material is coiled into a cylinder shape, the axial stress performance of the electrically active polymer material is improved, the bending deformation is not easy to occur after the electrification along the axial extension and the pushing of the piston, the accurate control to the locking process is facilitated, thereby the service performance is improved.
The electroactive polymer material 23 can also be a bundle of electroactive polymer fibers made of an electroactive polymer and containing electrodes. The length direction of the electroactive polymer fiber bundle is consistent with the extending direction of the slide rail 21, after the actuator is powered on, the electroactive polymer fiber bundle is deformed and extends along the slide rail 21, so that the roller shaft 22 is pushed to move downwards along the slide rail 21, and the roller shaft 22 extrudes the blood vessel 4 contained in the channel 11 in the downward movement process, so that the blood vessel 4 is gradually closed. The electroactive polymer material has a simple structure and is easy to manufacture.
Further optimize above-mentioned scheme, set up spring 24 in slide rail 21, this spring 24 is used for countering the stretching force of electroactive polymer material 23, makes roller 22 can reset after electroactive polymer material 23 removes the oppression of roller 22 to remove the oppression to blood vessel 4, strengthen the utility model discloses a security.
The spring 24 can be installed in various ways, that is, the spring 24 and the electroactive polymer material 23 can be respectively installed in the slide rails 21 (as shown in fig. 1 to 2) on both sides of the roller 22, in this case, the electroactive polymer material 23 can be a multi-layer folded electroactive polymer film, a rolled electroactive polymer film or an active polymer fiber bundle; the spring 24 may also be disposed in the track 21 on the same side of the roller 22 as the electroactive polymer material 23 (see fig. 4), where the electroactive polymer material 23 is a thin electroactive polymer film rolled into a cylinder and wrapped around the spring 24, or the electroactive polymer material 23 is a bundle of electroactive polymer fibers and the bundle of electroactive polymer fibers is disposed in the spring 24.
The utility model discloses in, the actuator outside can adopt the film to encapsulate, and its deformation of actuator after the encapsulation is not hindered by the film, and this preferred scheme avoids during the body fluid infiltration actuator, plays protection and insulating effect to the actuator.
The utility model uses the electro-deformation characteristic of the electro-active polymer material to make the actuator, and the control module is arranged to make the utility model be implanted into the human body completely, compared with the part exposed outside the human body, the blood vessel clamping device reduces the wound infection risk; at the same time the locking device is mounted outside the vessel, avoiding the risk of thrombosis compared to locking the vessel using an intravascular balloon dilation. The device can slowly block the internal carotid artery in a controllable way, and in the process of gradual blocking of the artery, the brain tissue for supplying blood to the internal carotid artery can obtain compensated blood supply of other blood vessels, so that the device gets rid of dependence on the internal carotid artery, and then the internal carotid artery is cut off, so that cerebral infarction is avoided, and conditions are created for disease treatment. Set up the spring that is used for the extension power to anti-electricity active polymer material in the slide rail, when the vascular block is excessive, too fast, remove the voltage, make the oppression of electro-active polymer material to the roller remove, the roller can reset to remove the oppression to the blood vessel, strengthen the utility model discloses a security. Through external program control, the contraction and extension of the actuator can be freely adjusted, if the locking is too fast to cause uncomfortable symptoms, the locking speed can be controlled through external program control or the actuator is contracted to relieve the vascular compression, or the power supply is cut off, so that the spring automatically pulls the roller shaft to reset, and the effect of ensuring the safety of the locking process is achieved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. An implantable controllable vascular occlusion device, comprising a housing (1), an actuator and a control module (3), wherein the housing (1) has a passage (11) extending through the housing (1), and the housing (1) is freely openable and closable so that a blood vessel (4) can be taken into or removed from the passage; the control module (3) is used for controlling signals and providing electric energy for the actuator; the actuator is arranged in a shell (1) and comprises a sliding rail (21), a roller shaft (22) capable of moving along the sliding rail (21) and an electroactive polymer material (23) arranged in the sliding rail (21), wherein after the actuator is electrified, the electroactive polymer material (23) is deformed and extends along the sliding rail (21) so as to press the roller shaft (22) to move along the sliding rail (21), and the roller shaft (22) presses a blood vessel (4) contained in the channel during moving so as to gradually close the blood vessel (4).
2. The implantable controllable vascular occlusion device according to claim 1, characterized in that the housing (1) is provided with an opening at a position corresponding to the channel (11) and a door (12) for opening or closing the opening.
3. The implantable controllable vascular occlusion device of claim 1, wherein the electroactive polymer material (23) is a multilayer folded electroactive polymer film or an electroactive polymer film rolled into a cylinder.
4. The implantable controllable vascular occlusion device of claim 1, wherein the electroactive polymer material (23) is an electroactive polymer fiber bundle.
5. The implantable controllable vascular occlusion device according to claim 1, wherein a spring (24) is further disposed in the sliding track, the spring (24) is used for resisting the stretching force of the electroactive polymer material (23), and after the electroactive polymer material (23) releases the compression on the roller (22), the roller (22) can be reset to release the compression on the blood vessel (4).
6. The implantable controllable vascular occlusion device according to claim 5, characterized in that the spring (24) and the electroactive polymer material (23) are arranged separately in a sliding track (21) on both sides of a roller (22).
7. The implantable controllable vascular occlusion device of claim 5, wherein the spring (24) is arranged in a sliding track (21) on the same side of a roller (22) as the electroactive polymer material (23), the electroactive polymer material (23) is an electroactive polymer film rolled into a cylinder shape, and the electroactive polymer film wraps the spring (24) or is arranged in the spring (24).
8. The implantable controllable vascular occlusion device of claim 5, wherein the spring (24) is arranged in a sliding track (21) on the same side of a roller (22) as the electroactive polymer material (23), the electroactive polymer material (23) being a bundle of electroactive polymer fibers arranged in the spring (24).
9. The implantable controllable vascular occlusion device according to claim 1, characterized in that the control module (3) comprises a control chip, a voltage conversion module and a battery pack, the control module (3) further being provided with a wireless receiving unit for receiving and identifying wirelessly transmitted signals.
10. The implantable controllable vascular occlusion device according to claim 1, characterized in that the housing (1) is further provided with a fixation structure, which is an annular protrusion (25), an annular groove (26) or a tunnel (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721244075.XU CN209916104U (en) | 2017-09-26 | 2017-09-26 | Implantable controllable vascular occlusion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721244075.XU CN209916104U (en) | 2017-09-26 | 2017-09-26 | Implantable controllable vascular occlusion device |
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| CN209916104U true CN209916104U (en) | 2020-01-10 |
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| CN201721244075.XU Active CN209916104U (en) | 2017-09-26 | 2017-09-26 | Implantable controllable vascular occlusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107714127A (en) * | 2017-09-26 | 2018-02-23 | 中国人民解放军总医院 | The controllable vascular occlusion device of implanted |
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2017
- 2017-09-26 CN CN201721244075.XU patent/CN209916104U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107714127A (en) * | 2017-09-26 | 2018-02-23 | 中国人民解放军总医院 | The controllable vascular occlusion device of implanted |
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