CN116919528A - Thrombolysis device with far-end closing-in mechanism - Google Patents
Thrombolysis device with far-end closing-in mechanism Download PDFInfo
- Publication number
- CN116919528A CN116919528A CN202210367530.4A CN202210367530A CN116919528A CN 116919528 A CN116919528 A CN 116919528A CN 202210367530 A CN202210367530 A CN 202210367530A CN 116919528 A CN116919528 A CN 116919528A
- Authority
- CN
- China
- Prior art keywords
- support
- thrombus taking
- thrombus
- closing
- supporting leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 230000002537 thrombolytic effect Effects 0.000 title claims description 8
- 208000007536 Thrombosis Diseases 0.000 claims abstract description 112
- 239000003146 anticoagulant agent Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 2
- 210000004204 blood vessel Anatomy 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 7
- 230000005389 magnetism Effects 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000003527 fibrinolytic agent Substances 0.000 description 2
- 230000003480 fibrinolytic effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 208000037170 Delayed Emergence from Anesthesia Diseases 0.000 description 1
- 102000009123 Fibrin Human genes 0.000 description 1
- 108010073385 Fibrin Proteins 0.000 description 1
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 description 1
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 210000000265 leukocyte Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention discloses a thrombus taking device with a far-end closing-in mechanism, which comprises a thrombus taking support and a support traction piece, wherein the near end of the thrombus taking support is fixedly connected with the far end of the support traction piece; the first magnetic attraction blocks on the closing-in support legs are mutually separated in the self-expanding opening state of the thrombus taking support, and the opening size of the distal opening of the thrombus taking support is restrained by mutually matching the closing-in support legs and the magnetic blocks, so that the conveying resistance of the thrombus taking support is reduced, the opening is positioned in a blood vessel or a sheath tube to run smoothly, the inner wall of the blood vessel or the sheath tube is prevented from being scratched, and the residual thrombus blocks in the thrombus taking support are prevented from sliding out.
Description
[ field of technology ]
The invention relates to the technical field of medical appliances, in particular to the technical field of a thrombus taking device with a far-end closing-in mechanism.
[ background Art ]
Thrombus is a small block of blood flow formed on the surface of the inside surface of a cardiovascular system vessel where it is exfoliated or repaired. In the variable fluid dependency, the thrombus consists of insoluble fibrin, deposited platelets, accumulated leukocytes and entrapped erythrocytes. There are two mechanisms in the human body for thrombus, the mechanism of thrombus generation is called: a coagulation system; the mechanism of clearing thrombus is called: fibrinolytic system. Once the blood vessel of the human body is damaged, the coagulation system is activated immediately, and the continuous bleeding is prevented; once a thrombus occurs, the fibrinolytic system that eliminates the thrombus activates, dissolving the clot away. The two systems are dynamically balanced to ensure that the blood neither coagulates nor bleeds too much.
Once this balance is broken, the thrombus occludes the vessel, leading to serious thrombotic disease. Thrombotic diseases including apoplexy, coronary heart disease, pulmonary embolism, etc. are one of the important diseases that seriously threaten life health of human beings and cause death and disability. Data statistics show that thrombotic diseases account for more than 51% of human disease mortality. At present, the incidence rate of thrombotic disease patients in China exceeds 1 million and is far higher than that of other diseases, and the trend of increasing year by year is that the design of a high-efficiency thrombus taking device is very necessary.
The thrombus is removed by a plurality of means, firstly, the thrombus is dissolved by a medicine pouring mode, secondly, the thrombus is taken out by a thrombus taking bracket in a dragging mode, and the thrombus is assisted by a balloon or not; the other is to use an aspiration catheter to manually or automatically withdraw the endovascular plug into the catheter. The current common thrombolytic therapy method combines several modes: the thrombus is first dissolved or dragged by chemical or mechanical means, further combined with the aspiration function of the catheter, and the plug is retrieved into the catheter and subsequently removed from the vessel. The key to achieving this technique is to retrieve the plug as completely as possible and maximize aspiration efficiency, which can be achieved when the vessel is completely interrupted while the catheter has a larger caliber and lumen. A system for removing a thrombus according to the chinese patent application No. CN201710142837.3 is proposed, which includes a thrombus removing holder, and a distal end of the thrombus removing holder is in an open state. Preferably, the thrombus taking support is in a roll shape; the cross section of the thrombus taking support is of an open loop structure. The distal end of the thrombus taking support with the structure is in an open state, and the open position can generate larger friction with the inner wall of the sheath tube or the blood vessel when the sheath tube or the blood vessel is conveyed, so that the conveying resistance is large, the conveying is not smooth, and the inner wall of the sheath tube or the blood vessel is easy to scratch.
[ invention ]
The invention aims to solve the problems in the prior art, and provides a thrombus taking device with a far-end closing-in mechanism, which can close the far-end opening of a thrombus taking support through the mutual matching of closing-in supporting legs and magnetic blocks, restrict the size of the opening and reduce the conveying resistance of the thrombus taking support.
In order to achieve the above purpose, the invention provides a thrombus taking device with a far-end closing mechanism, which comprises a thrombus taking bracket with radial self-expansion performance and a bracket traction piece, wherein the near end of the thrombus taking bracket is fixedly connected with the far end of the bracket traction piece, one end of the thrombus taking bracket far away from the bracket traction piece is provided with a plurality of closing-in support legs extending towards the end far away from the thrombus taking bracket, one end of the closing-in support legs far away from the thrombus taking bracket is provided with first magnetic attraction blocks which can be mutually magnetically attracted and matched, and the first magnetic attraction blocks on the closing-in support legs are mutually matched and magnetically attracted and connected in a contracted state of the thrombus taking bracket; the first magnetic attraction blocks on the closing-in support leg are mutually separated in the self-expanding and opening state of the thrombus taking support.
Preferably, the closing-in support leg comprises a first support leg and a second support leg which are arranged on two sides of the first magnetic attraction block, and a plurality of auxiliary support legs extending towards two sides are arranged in the middle section of the first support leg and/or the second support leg.
Preferably, the auxiliary supporting leg is arranged on the first supporting leg, a plurality of second magnetic blocks matched with the auxiliary supporting leg are arranged on the second supporting leg, and a third magnetic block in magnetic attraction fit with the second magnetic blocks on the adjacent closing-in supporting leg is arranged at the tail end of the auxiliary supporting leg; the third magnetic block arranged at the tail end of the auxiliary supporting leg and the second magnetic block arranged on the second supporting leg adjacent to the closing-in supporting leg are mutually matched and magnetically connected in a contracted state of the thrombus taking support; the second magnetic block is separated from the third magnetic block in the self-expanding state of the thrombus taking support.
Preferably, the distal end of the closing-in support leg has a tendency of bending towards the side far away from the axis of the thrombus taking support, and the suction force between the first magnetic attraction blocks is smaller than the elastic restoring force of the self-expansion opening of the thrombus taking support.
Preferably, the surface of the first magnetic attraction block is provided with a developing mark.
Preferably, a hollow traction member inner cavity is arranged in the support traction member, and the traction member inner cavity is communicated with the inside of the thrombus taking support.
The thrombus taking device with the far-end closing mechanism has the beneficial effects that: according to the invention, the plurality of closing-in support legs are arranged at the distal ends of the closing-in support legs, and the first magnetic attraction blocks are arranged at the distal ends of the closing-in support legs, so that when the thrombus taking support is in a pressed and held contracted state, the first magnetic attraction blocks can be mutually magnetically attracted and matched, the opening at the distal end of the thrombus taking support is closed, the opening is restrained, the opening can run in a blood vessel or a sheath tube smoothly and smoothly, the opening is prevented from scratching the inner wall of the blood vessel or the sheath tube, after the thrombus taking support is released, the elastic restoring force of the thrombus taking support can automatically expand and open the first magnetic attraction blocks, the first magnetic attraction blocks are disconnected, the thrombus taking support can normally expand and be attached to the blood vessel, and when the thrombus taking support is retracted after the thrombus taking support is completed, the thrombus taking support is retracted into a recovered device such as a catheter, the thrombus taking support is in the pressed and held contracted state again, the first magnetic attraction blocks can be mutually magnetically matched, the opening of the thrombus taking support is restrained, the opening is prevented from scratching the blood vessel or the inner wall of the thrombus taking support, the residual blocks in the thrombus taking support can be prevented from being pulled out, and the safety of the thrombus taking support can be improved.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a schematic view of a thrombus taking-out stent with a distal end closing mechanism according to the present invention in a self-expanding state.
Fig. 2 is a schematic view of a thrombus removal device with a distal end closing mechanism according to the present invention in a contracted state of a thrombus removal stent.
In the figure: 1-thrombus taking support, 2-first magnetic attraction block, 3-support traction piece, 4-second magnetic block, 5-third magnetic block, 11-closing-in support leg, 111-first support leg, 112-second support leg, 113-auxiliary support leg and 10-, 31-traction piece inner cavity.
[ detailed description ] of the invention
The present invention will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
In the description of the present invention, it will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships in which the inventive product is conventionally placed in use, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiment one:
referring to fig. 1 and 2, the invention relates to a thrombus taking device with a far-end closing mechanism, which comprises a thrombus taking bracket 1 with radial self-expansion performance and a bracket traction piece 3. The proximal end of the thrombus taking bracket 1 is fixedly connected with the distal end of the bracket traction piece 3. A plurality of closing-in supporting legs 11 extending towards the end far away from the bolt taking support 1 are arranged at one end far away from the support traction piece 3 on the bolt taking support 1, first magnetic attraction blocks 2 which can be mutually in magnetic attraction fit are arranged at one end far away from the bolt taking support 1 on the closing-in supporting legs 11, and the first magnetic attraction blocks 2 on the closing-in supporting legs 11 are mutually in magnetic attraction connection in the contracted state of the bolt taking support 1; the first magnetic attraction blocks 2 on the closing-in support legs 11 are mutually separated under the self-expanding state of the thrombus taking support 1. In this embodiment, through setting up a plurality of binding off landing legs 11 with the bolt taking support 1 distal end to set up first magnetism piece 2 at binding off landing leg 11 distal end, when bolt taking support 1 is in the pressure and hold shrinkage state, first magnetism piece 2 can mutually inhale the cooperation, close up the distal end opening part of bolt taking support 1, restraint opening size, and make the opening part move more smooth in blood vessel or sheath, avoid opening part fish tail blood vessel or sheath inner wall, after release bolt taking support 1, the elasticity restoring force of bolt taking support 1 can make its self-expanding open, and prop open between first magnetism piece 2, disconnection between the first magnetism piece 2, bolt taking support 1 can normally expand and the laminating of blood vessel, and after bolt taking completion, when retrieving bolt taking support 1, with bolt taking support 1 back to in recovery equipment such as pipe, bolt taking support 1 is in the pressure again holds shrinkage state, first magnetism piece 2 can mutually support again, restraint bolt taking support 1 opening size, after release bolt taking support 1 back, also can avoid the scratch safety of the safety of bolt taking support 1, can avoid the residual safety of the safety of bolt taking support.
Referring to fig. 1 and 2, the closing-in support leg 11 includes a first support leg 111 and a second support leg 112 disposed at two sides of the first magnetic attraction block 2, and a plurality of auxiliary support legs 113 extending to two sides are disposed at a middle section of the first support leg 111. The density is improved, the blocking effect on thrombus is improved, and the residual thrombus in the thrombus taking support 1 is further prevented from rapidly sliding out.
Embodiment two:
referring to fig. 1 and 2, the auxiliary supporting leg 113 is arranged on the first supporting leg 111, a plurality of second magnetic blocks 4 matched with the auxiliary supporting leg 113 are arranged on the second supporting leg 112, and a third magnetic block 5 in magnetic attraction fit with the second magnetic blocks 4 on the adjacent closing-in supporting leg 11 is arranged at the tail end of the auxiliary supporting leg 113; in the contracted state of the thrombus taking support 1, the third magnetic block 5 arranged at the tail end of the auxiliary supporting leg 113 is mutually matched with the second magnetic block 4 arranged on the second supporting leg 112 of the adjacent closing-in supporting leg 11 for magnetic attraction connection; the second magnetic block 4 is separated from the third magnetic block 5 in the self-expanding state of the bolt taking bracket 1. The auxiliary supporting leg 113 can be matched with the second magnetic block 4 at the side edge of the second supporting leg 112, so that the mouth binding effect is improved, the auxiliary supporting leg 113 is prevented from tilting in the binding state, and the blood vessel is prevented from being scratched.
Referring to fig. 1 and 2, the distal end of the closing-in leg 11 has a tendency to bend toward the side away from the axis of the thrombus taking support 1, and the attractive force between the first magnetic attraction blocks 2 is smaller than the elastic restoring force of self-expanding expansion of the thrombus taking support 1. The closing-in support 1012 can be bent towards the axis side far away from the expandable distal end 101 in a natural state, is convenient to be attached to the inner wall of a blood vessel, is convenient for opening the distal end opening of the thrombus-taking support 1 when the thrombus-taking support 1 is expanded, and is convenient for taking a thrombus.
Referring to fig. 1 and 2, a developing mark is provided on the surface of the first magnetic attraction block 2.
Referring to fig. 1 and 2, a hollow traction member inner cavity 31 is arranged in the bracket traction member 3, and the traction member inner cavity 31 is communicated with the interior of the thrombus taking bracket 1. Facilitating aspiration of thrombus through the retractor lumen 31.
The working process of the invention comprises the following steps:
when the thrombus taking device with the far-end closing mechanism is used in the working process, a channel at the thrombus is firstly opened through the guide wire, the thrombus taking support 1 and the support traction piece 3 can be arranged in the sheath tube in the conveying process, the thrombus is conveyed to the thrombus along the guide wire, the sheath tube is retracted, the elastic restoring force of the thrombus taking support 1 can enable the thrombus taking support 1 to be automatically expanded and opened, the first magnetic blocks 2 are expanded, the first magnetic blocks 2 are disconnected, the thrombus taking support 1 can be normally expanded and attached to a blood vessel, when the thrombus taking support 1 is retracted after the thrombus taking is finished, the thrombus taking support 1 is retracted into a recovery device such as a catheter, the thrombus taking support 1 is in a compression state again, the first magnetic blocks 2 can be mutually matched to restrain the opening size of the thrombus taking support 1, the blood vessel is prevented from being scratched in the retracting process, the residual thrombus taking blocks in the thrombus taking support 1 can be prevented from sliding out, and the thrombus taking safety is improved.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (6)
1. The utility model provides a thrombus taking device with distal end binding off mechanism, includes that has radial from expansion property's thrombus taking support (1) and support traction element (3), thrombus taking support (1) proximal end with support traction element (3) distal end fixed connection, its characterized in that: one end of the thrombus taking support (1) far away from the support traction piece (3) is provided with a plurality of closing-in support legs (11) extending towards the end far away from the thrombus taking support (1), one end of the closing-in support legs (11) far away from the thrombus taking support (1) is provided with first magnetic attraction blocks (2) which can be mutually magnetically attracted and matched, and the first magnetic attraction blocks (2) on the closing-in support legs (11) are mutually magnetically attracted and connected in a contracted state of the thrombus taking support (1); the first magnetic attraction blocks (2) on the closing-in support legs (11) are mutually separated in the self-expanding opening state of the thrombus taking support (1).
2. A thrombolytic device with a distal end closing mechanism as defined in claim 1 wherein: the closing-in support leg (11) comprises a first support leg (111) and a second support leg (112) which are arranged on two sides of the first magnetic attraction block (2), and a plurality of auxiliary support legs (113) extending towards two sides are arranged in the middle section of the first support leg (111) and/or the second support leg (112).
3. A thrombolytic device with a distal end closing mechanism as defined in claim 2 wherein: the auxiliary supporting leg (113) is arranged on the first supporting leg (111), a plurality of second magnetic blocks (4) matched with the auxiliary supporting leg (113) are arranged on the second supporting leg (112), and a third magnetic block (5) in magnetic attraction fit with the second magnetic blocks (4) on the adjacent closing-in supporting leg (11) is arranged at the tail end of the auxiliary supporting leg (113); the third magnetic block (5) arranged at the tail end of the auxiliary supporting leg (113) and the second magnetic block (4) arranged on the second supporting leg (112) adjacent to the closing-in supporting leg (11) are mutually matched and magnetically connected in a contracted state of the thrombus taking support (1); the second magnetic block (4) is separated from the third magnetic block (5) in the self-expanding state of the thrombus taking support (1).
4. A thrombolytic device with a distal end closing mechanism as defined in claim 1 wherein: the far end of the closing-in supporting leg (11) has a tendency of bending towards the axis side far away from the thrombus taking support (1), and the suction force between the first magnetic attraction blocks (2) is smaller than the elastic restoring force of the self-expansion opening of the thrombus taking support (1).
5. A thrombolytic device with a distal end closing mechanism as defined in claim 1 wherein: the surface of the first magnetic attraction block (2) is provided with a developing mark.
6. A thrombolytic device with a distal end closing mechanism as defined in claim 1 wherein: the bracket traction piece (3) is internally provided with a hollow traction piece inner cavity (31), and the traction piece inner cavity (31) is communicated with the inside of the thrombus taking bracket (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210367530.4A CN116919528A (en) | 2022-04-08 | 2022-04-08 | Thrombolysis device with far-end closing-in mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210367530.4A CN116919528A (en) | 2022-04-08 | 2022-04-08 | Thrombolysis device with far-end closing-in mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116919528A true CN116919528A (en) | 2023-10-24 |
Family
ID=88377920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210367530.4A Pending CN116919528A (en) | 2022-04-08 | 2022-04-08 | Thrombolysis device with far-end closing-in mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116919528A (en) |
-
2022
- 2022-04-08 CN CN202210367530.4A patent/CN116919528A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1210142B1 (en) | Apparatus for reducing embolization during treatment of carotid artery disease | |
| US7927347B2 (en) | Apparatus and methods for reducing embolization during treatment of carotid artery disease | |
| US6423032B2 (en) | Apparatus and methods for reducing embolization during treatment of carotid artery disease | |
| US9427252B2 (en) | Thrombus removal and intravascular distal embolic protection device | |
| US20050131453A1 (en) | Apparatus and methods for reducing embolization during treatment of carotid artery disease | |
| AU2008229661B2 (en) | Apparatus for removing emboli during an angioplasty or stenting procedure | |
| US20230329730A1 (en) | Device and method for manual aspiration and removal of an undesirable material | |
| CN214805124U (en) | Thrombus taking device for pulmonary artery embolism | |
| CN108836429B (en) | Intravascular thrombus extraction device and method | |
| CN116919528A (en) | Thrombolysis device with far-end closing-in mechanism | |
| CN112674839A (en) | Thrombus taking device for pulmonary artery embolism | |
| CN218899596U (en) | Intracranial thrombus suction catheter with inclined plane structure | |
| EP1882490A1 (en) | Dual guide-wire distal end protector | |
| CN116077137A (en) | Separated type bolt suction device | |
| CN115845233A (en) | Catheter with releasable tip | |
| CN113262010A (en) | Conveying mechanism of aneurysm plugging device | |
| CN113350664A (en) | Magnetic traction double-J tube taking-out device | |
| CN209827118U (en) | Medical support recovery device | |
| CN116919530A (en) | Thrombolysis device for realizing expandable distal end bundle port by utilizing bundle-contracting traction wire | |
| CN219878226U (en) | Separator for preventing thrombus from blocking | |
| CN215994383U (en) | Inferior vena cava filter recovery unit | |
| CN217040207U (en) | Conveying mechanism of aneurysm plugging device | |
| CN109793601B (en) | Medical support recovery unit | |
| CN215384327U (en) | Inclined wedge releasing mechanism | |
| CN215780835U (en) | Magnetic suction type double-J tube taking-out device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |