CN110974350B - Bolt taking system - Google Patents
Bolt taking system Download PDFInfo
- Publication number
- CN110974350B CN110974350B CN201911297372.4A CN201911297372A CN110974350B CN 110974350 B CN110974350 B CN 110974350B CN 201911297372 A CN201911297372 A CN 201911297372A CN 110974350 B CN110974350 B CN 110974350B
- Authority
- CN
- China
- Prior art keywords
- support
- connecting wire
- point
- embolectomy
- thrombus
- 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.)
- Active
Links
- 238000013156 embolectomy Methods 0.000 claims description 22
- 208000007536 Thrombosis Diseases 0.000 abstract description 45
- 210000004204 blood vessel Anatomy 0.000 abstract description 10
- 238000013151 thrombectomy Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 230000007794 irritation Effects 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 208000005189 Embolism Diseases 0.000 description 5
- 230000000638 stimulation Effects 0.000 description 2
- 230000002537 thrombolytic effect Effects 0.000 description 2
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 210000002376 aorta thoracic Anatomy 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 208000034158 bleeding Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 210000004004 carotid artery internal Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 210000003657 middle cerebral artery Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a bolt taking system, which comprises a cylindrical bolt taking bracket and is characterized in that: the thrombectomy support comprises a closed ring part close to the far end and an open ring part close to the near end, and an opening gap from the near end to the far end is formed in the side wall of the open ring part. The thrombus taking stent has the advantages that due to the adoption of the technical scheme, the thrombus taking stent has a good thrombus capturing effect, small irritation to blood vessels and reduced blood vessel injury risk.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a thrombus taking system.
Background
Thrombi are small patches of blood flow that form on the surface of a denuded or repaired site within a blood vessel of the cardiovascular system. At present, the thrombolysis treatment is performed on thrombus by using thrombolytic medicines, but the treatment time is long, the recanalization rate is low, and the treatment is accompanied with bleeding risk.
The embolectomy system utilizes an interventional minimally invasive technology, under the assistance of medical imaging equipment, a product is pushed to a target lesion part through a preset micro catheter, passes through femoral artery, lower limb artery, aortic arch, internal carotid artery and middle cerebral artery, the stent is released in a mode of withdrawing the micro catheter, when the stent is withdrawn, the stent wraps embolus in a grid of the stent and fixes the embolus, and the embolus is withdrawn into a middle catheter together with the stent and the embolus through the withdrawn stent, so that the embolus is removed out of a body, the blood vessel is recovered to be unobstructed, and the treatment purpose is achieved. The thrombus taking support in the prior art comprises a closed-loop thrombus taking support which is in a cylindrical net shape, and the defect that the cylindrical net-shaped thrombus taking support has insufficient capturing force on thrombus, the thrombus is separated from the thrombus taking support at a certain probability, and thrombus taking failure is caused.
The patent CN106859729A discloses an embolectomy support system, which adopts an open-loop style embolectomy support, and solves the problem of insufficient thrombus grasping force of a closed-loop style embolectomy support to a great extent. However, in the open loop mode, the opening gap of the thrombus removal stent has a broken stubble, and the broken stubble easily stimulates the blood vessel to cause blood vessel damage.
Disclosure of Invention
The invention aims to provide a thrombus taking system, wherein the distal end of a thrombus taking support is closed and the proximal end of the thrombus taking support is open, so that the capturing force of the thrombus taking support on slow thrombus is improved, and the stimulation of the thrombus taking support on blood vessels is reduced to a great extent.
The technical scheme of the invention is as follows:
the thrombus taking system comprises a cylindrical thrombus taking support, the thrombus taking support comprises a closed ring part close to a far end and an open ring part close to a near end, and an opening gap from the near end to the far end is formed in the side wall of the open ring part.
The combining position of the thrombus and the thrombus is mainly positioned at the proximal end of the thrombus taking support. During release of the stent from the microcatheter, the distal end is first detached from the microcatheter and the distal end is thus first expanded, which is most irritating to the vessel, as opposed to the proximal end of the stent, which is less likely to cause vessel irritation due to the "road paving" of the distal end. Therefore, the distal end of the thrombus taking stent is designed into a closed loop structure with small irritation to blood vessels, and the proximal end of the thrombus taking stent is in an open loop mode to improve the catching effect on thrombus.
Preferably, the ratio of the length of the open-loop part in the axial direction of the embolectomy support to the length of the embolectomy support in the axial direction is 2.
Furthermore, the ratio of the length of the open loop part in the axial direction of the thrombectomy support to the effective length of the thrombectomy support in the axial direction of the thrombectomy support is 2:4.
the cylindrical thrombus taking support is internally provided with at least 1 connecting wire for connecting the far end and the near end, the connecting wire is connected with the far end to form a first connecting point, the connecting wire is connected with the near end to form a second connecting point, and a straight line between the first connecting point and the second connecting point is intersected with the axis of the thrombus taking support.
In order to further improve the capturing effect of the open ring part on thrombus, the connecting wire is arranged in the thrombus taking support and is used for improving the contact area of the open ring part and the thrombus. The connecting line between the first connecting point and the second connecting point which are intersected with the axis of the thrombus taking support is the longest arrangement mode of the connecting wire in the thrombus taking support, and the contact area of the connecting wire and thrombus can be further improved.
Preferably, the connecting wire is wavy, and the ratio of the linear length between the first connecting point and the second connecting point to the spreading length of the connecting wire is 2.
Preferably, the opening gap of the open ring part and the axis of the bolt taking bracket are positioned on the same axial tangent plane, and the first connecting point is positioned on the extension line of the opening gap.
The connecting wire comprises a connecting wire first section positioned at the open-loop part, and the vertical distance from the wave crest to the wave trough of the wavy connecting wire first section in the direction from the second connecting point to the first connecting point is gradually increased. When the thrombus taking support is withdrawn to the microcatheter, the connecting wire needs to be contracted together with the thrombus taking support, the first section of the connecting wire keeps smaller width at the near end, so that the thrombus taking support is more favorably withdrawn to the microcatheter, and the retraction resistance of the thrombus taking support is reduced.
The invention has the advantages and positive effects that: by adopting the technical scheme, the thrombus taking bracket has good capturing effect on thrombus, has small stimulation on the blood vessel and reduces the risk of blood vessel injury.
Drawings
FIG. 1 is a schematic structural view of the present invention
FIG. 2 isbase:Sub>A schematic structural view ofbase:Sub>A cross section A-A of the closed loop portion in FIG. 1
FIG. 3 isbase:Sub>A schematic structural view ofbase:Sub>A section A-A of the open-loop portion in FIG. 1
FIG. 4 shows the shape of the connecting wire in example 1
FIG. 5 shows the shape of the connecting wire in example 2
FIG. 6 shows the shape of a connecting wire in example 3
In the figure:
1. proximal end 2, distal end 3, open loop
4. Closed part 5, connecting wire 6, opening gap
Detailed Description
Example 1
The thrombectomy support comprises a closed loop part 4 close to the far end 2 and an open loop part 3 close to the near end 1, and an opening gap 6 from the near end 1 to the far end 2 is formed in the side wall of the open loop part 3.
The ratio of the length of the open-loop part 3 in the axial direction of the embolectomy support to the length of the embolectomy support in the axial direction is 1:3.
the embolectomy support of tube-shape is inside to be equipped with and to be no less than 1 and connect distal end and near-end connecting wire 5, and connecting wire 5 is first tie point with being connected of distal end 2, and the tie point of connecting wire 5 and near-end 1 is the second tie point, and the straight line between first tie point and the second tie point intersects with the axis of embolectomy support.
The connecting wire 5 is wavy, and the ratio of the linear length between the first connecting point and the second connecting point to the spreading length of the connecting wire is 1.
Example 2
The thrombectomy support comprises a closed loop portion 4 close to the far end 2 and an open loop portion 3 close to the near end 1, and the side wall of the open loop portion 3 is provided with an opening gap 6 from the near end 1 to the far end 2.
The ratio of the length of the open-loop part 3 in the axial direction of the embolectomy support to the length of the embolectomy support in the axial direction is 1:3.
the cylindrical thrombus taking support is internally provided with at least 1 connecting far-end and near-end connecting wire 5, the connecting wire 5 is connected with the far-end 2 to form a first connecting point, the connecting point of the connecting wire 5 and the near-end 1 is a second connecting point, and a straight line between the first connecting point and the second connecting point is intersected with the axis of the thrombus taking support.
The connecting wire 5 is wavy, and the ratio of the linear length between the first connecting point and the second connecting point to the spreading length of the connecting wire is 1.
The connecting wire comprises a connecting wire first section positioned at the open-loop part, and the vertical distance from the wave crest to the wave trough of the wavy connecting wire first section in the direction from the second connecting point to the first connecting point is gradually increased.
Example 3
The thrombectomy support comprises a closed loop part 4 close to the far end 2 and an open loop part 3 close to the near end 1, and an opening gap 6 from the near end 1 to the far end 2 is formed in the side wall of the open loop part 3.
The ratio of the length of the open-loop part 3 in the axial direction of the embolectomy support to the length of the embolectomy support in the axial direction is 2:4.
the embolectomy support of tube-shape is inside to be equipped with and to be no less than 1 and connect distal end and near-end connecting wire 5, and connecting wire 5 is first tie point with being connected of distal end 2, and the tie point of connecting wire 5 and near-end 1 is the second tie point, and the straight line between first tie point and the second tie point intersects with the axis of embolectomy support.
The connecting wire 5 is a straight line.
Although one embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. Get system of tying, including the support of tying of getting of tube-shape, its characterized in that: get and tie support including the closed loop portion that is close to the distal end and the open loop portion that is close to the proximal end, the lateral wall that open loop portion is equipped with the opening gap of proximal end to distal end direction, the support is tied to the getting of tube-shape is inside to be equipped with and is no less than 1 connection distal end and near-end connecting wire, the connecting wire with the connection of distal end is first tie point, the connecting wire with the tie point of proximal end is the second tie point, first tie point with straight line between the second tie point with the axis of getting the support is crossing.
2. The embolectomy system of claim 1, wherein: the ratio of the length of the open-loop part in the axial direction of the embolectomy support to the length of the embolectomy support in the axial direction is 2:3-8.
3. The embolectomy system of claim 2, wherein: the connecting wire is wavy, and the ratio of the linear length between the first connecting point and the second connecting point to the unfolding length of the connecting wire is 2-3.
4. The embolectomy system of claim 2, wherein: the opening gap of the opening ring part and the axis of the bolt taking support are located on the same axial tangent plane, and the first connecting point is located on the extension line of the opening gap.
5. The embolectomy system of claim 3, wherein: the connecting wire comprises a connecting wire first section positioned at the open-loop part, and the vertical distance from the wave crest to the wave trough of the wavy connecting wire first section in the direction from the second connecting point to the first connecting point is gradually increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911297372.4A CN110974350B (en) | 2019-12-17 | 2019-12-17 | Bolt taking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911297372.4A CN110974350B (en) | 2019-12-17 | 2019-12-17 | Bolt taking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110974350A CN110974350A (en) | 2020-04-10 |
| CN110974350B true CN110974350B (en) | 2023-03-17 |
Family
ID=70094545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911297372.4A Active CN110974350B (en) | 2019-12-17 | 2019-12-17 | Bolt taking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110974350B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115444508A (en) * | 2022-09-21 | 2022-12-09 | 上海恩盛医疗科技有限公司 | Bolt taking device and bolt taking system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068911A (en) * | 2013-03-26 | 2014-10-01 | 上海微创医疗器械（集团）有限公司 | Blood vessel thrombus extracting implement and thrombus extracting device |
| US8900265B1 (en) * | 2014-01-03 | 2014-12-02 | Legacy Ventures LLC | Clot retrieval system |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9655633B2 (en) * | 2004-09-10 | 2017-05-23 | Penumbra, Inc. | System and method for treating ischemic stroke |
| US20110152920A1 (en) * | 2008-12-02 | 2011-06-23 | Rapid Medical Ltd. | Embolectomy device |
| EP2683309B1 (en) * | 2011-03-09 | 2021-04-21 | Neuravi Limited | A clot retrieval device for removing occlusive clot from a blood vessel |
| WO2012135167A1 (en) * | 2011-03-31 | 2012-10-04 | Cook Medical Technologies Llc | Stent designs having enhanced radiopacity |
| CN104068912A (en) * | 2013-03-26 | 2014-10-01 | 上海微创医疗器械（集团）有限公司 | Intracranial vascular thrombus retrieval machine and thrombus retrieval device |
| CN104068910A (en) * | 2013-03-26 | 2014-10-01 | 上海微创医疗器械（集团）有限公司 | Blood vessel thrombus extracting system |
| US10888346B2 (en) * | 2014-05-18 | 2021-01-12 | Legacy Ventures LLC | Clot retrieval system |
| CN109247969B (en) * | 2017-07-14 | 2024-02-20 | 上海心玮医疗科技股份有限公司 | Thrombolysis device system |
| CN106859729A (en) * | 2017-03-10 | 2017-06-20 | 上海心玮医疗科技有限公司 | One kind takes bolt mounting system |
| CN107822695A (en) * | 2017-11-22 | 2018-03-23 | 缪中荣 | Special-purpose taking pin device in the cerebrovascular |
| CN110522539B (en) * | 2019-09-27 | 2020-12-04 | 苏州中天医疗器械科技有限公司 | Thrombus taking-out device, method and application thereof |
-
2019
- 2019-12-17 CN CN201911297372.4A patent/CN110974350B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068911A (en) * | 2013-03-26 | 2014-10-01 | 上海微创医疗器械（集团）有限公司 | Blood vessel thrombus extracting implement and thrombus extracting device |
| US8900265B1 (en) * | 2014-01-03 | 2014-12-02 | Legacy Ventures LLC | Clot retrieval system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110974350A (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200405336A1 (en) | Methods for restoring blood flow within blocked vasculature | |
| KR101827593B1 (en) | Thrombectomy Device | |
| AU2012258052B2 (en) | Thrombectomy device | |
| US9271747B2 (en) | Complex wire formed devices | |
| US7029488B2 (en) | Mechanical thrombectomy device for use in cerebral vessels | |
| US20110060359A1 (en) | Device for the removal of thrombi from blood vessels | |
| JP2014519377A5 (en) | ||
| US20100137899A1 (en) | Mechanical Embolectomy Device and Method | |
| Hernesniemi et al. | Subtemporal approach to basilar bifurcation aneurysms: advanced technique and clinical experience | |
| US11617593B2 (en) | Complex wire formed devices | |
| WO2017186025A1 (en) | Inferior vena cava filter | |
| CN108742774A (en) | A kind of double-layer structure takes pin device | |
| CN110974350B (en) | Bolt taking system | |
| CN216933371U (en) | Blood vessel thrombus taking catheter | |
| CN209136779U (en) | A kind of double-layer structure takes pin device | |
| CN103417258A (en) | Intracranial vascular thrombus removal equipment | |
| CN212699045U (en) | Double-deck bolt support of getting with adjustable net | |
| CN208659445U (en) | Cerebral arteriovenous malformation interventional embolization is postoperative to stay pipe cutting device | |
| CN114098906A (en) | A get and tie bracket component that is used for thrombus to clear away and catches thrombus that breaks | |
| CN210114478U (en) | Thrombectomy support | |
| CN114916993B (en) | Thrombus taking device and thrombus taking system | |
| CN208625791U (en) | Intracapsular embolism guiding device and aneurysm treatment device | |
| EP4333743A1 (en) | Improved funnel catheter and novel methods of utilization | |
| WO2023100179A1 (en) | Embolus removal apparatus and methods |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Embolic system Effective date of registration: 20231106 Granted publication date: 20230317 Pledgee: Weihai Branch of Industrial Bank Co.,Ltd. Pledgor: HEMU (CHINA) BIOLOGICAL ENGINEERING Co.,Ltd. Registration number: Y2023980064037 |