CN114098906A - A get and tie bracket component that is used for thrombus to clear away and catches thrombus that breaks - Google Patents
A get and tie bracket component that is used for thrombus to clear away and catches thrombus that breaks Download PDFInfo
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- CN114098906A CN114098906A CN202111422454.4A CN202111422454A CN114098906A CN 114098906 A CN114098906 A CN 114098906A CN 202111422454 A CN202111422454 A CN 202111422454A CN 114098906 A CN114098906 A CN 114098906A
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- Prior art keywords
- stent
- thrombus
- thrombectomy
- assembly
- tube
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 79
- 238000013151 thrombectomy Methods 0.000 claims abstract description 16
- 238000013156 embolectomy Methods 0.000 claims description 16
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 4
- 229920005594 polymer fiber Polymers 0.000 claims description 4
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 claims description 3
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 claims description 3
- 238000012800 visualization Methods 0.000 claims 2
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims 1
- 210000004204 blood vessel Anatomy 0.000 abstract description 12
- 230000006378 damage Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 210000005036 nerve Anatomy 0.000 description 4
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000010100 anticoagulation Effects 0.000 description 1
- 230000001746 atrial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010102 embolization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 201000005665 thrombophilia Diseases 0.000 description 1
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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
-
- 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
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
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- 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 discloses a thrombus removal bracket assembly for removing thrombus and capturing broken thrombus, which comprises a conveying pipe, a bracket connecting pipe and a thrombus removal bracket, wherein the bracket connecting pipe is nested in a through hole of the conveying pipe; the thrombectomy stent includes a first stent and a second stent, the second stent being located at a distal end of the first stent, the second stent being configured to capture a smaller thrombus than the first stent can capture. The invention can ensure that thrombus is removed completely, can not damage blood vessels, and reduces the thrombus taking times and the operation time.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a thrombus removal support assembly for removing thrombus and capturing broken thrombus.
Background
Blood is disordered in the coagulation and anticoagulation balance of a whole body coagulation system or a local coagulation system in vivo under the action of various risk factors, so that arterial thrombus, venous thrombus, atrial thrombus or microvascular thrombus is formed, and once the blood vessel is blocked to form thrombus, if the treatment is not timely, the blood is slightly disabled and is killed. The prevention and treatment of thrombotic diseases aims at improving hypercoagulable state, recanalizing or reconstructing blood flow path, and preventing and treating tissue ischemia and necrosis.
For patients with thrombus, how to rapidly remove thrombus is the first thing. The nerve intervention medical treatment is a good choice, and the nerve intervention treatment mode is a stent thrombus removal mode, but the thrombus removal mode has certain defects: firstly, the stent must pass through the thrombus, potentially breaking the thrombus; but rather by dragging the thrombus, potentially fragmenting it; thirdly, 1 to 6 times is generally needed to take out the thrombus, which is easy to damage the blood vessel and cause pain; fourthly, the FPE is lower than 30 percent; fifthly, a considerable part of embolectomy needs other instruments for auxiliary rescue. The existing nerve intervention thrombus extraction technology has a plurality of spaces for improvement and optimization
Therefore, those skilled in the art have endeavored to provide an embolectomy stent assembly that can solve the distal vascular embolization complications of the existing neuroinvasive embolectomy techniques and achieve maximal embolectomy.
Disclosure of Invention
In view of the defects in the prior art, the technical problem to be solved by the invention is how to provide an embolectomy support assembly which can solve the complications of distal vascular embolism in the existing nerve intervention embolectomy technology and can realize maximal embolectomy.
In order to achieve the above object, the present invention provides a thrombus removal support assembly for removing thrombus and capturing ruptured thrombus, comprising a delivery tube, a stent connecting tube nested in a through hole of the delivery tube, and a thrombus removal support connected with a distal end of the stent connecting tube, the thrombus removal support being configured to be retractable in the delivery tube; the thrombectomy stent includes a first stent and a second stent, the second stent being located at a distal end of the first stent, the second stent being configured to capture a smaller thrombus than the first stent can capture.
Further, the stent comprises a delivery pipe joint, wherein the delivery pipe joint is connected with the proximal end of the delivery pipe, and the stent connecting pipe penetrates through the delivery pipe joint.
Preferably, the distal end of the delivery tube adaptor is of helical configuration.
Furthermore, the side surface of the conveying pipe joint is connected with a side branch pipe, and one end of the side branch pipe is connected with a two-way valve.
Further, the bracket connecting pipe joint is connected with the near end of the bracket connecting pipe.
Preferably, the distal end of the stent connecting tube has a tapered structure.
Furthermore, the bracket connecting pipe is provided with a developing ring at two sides of the embolectomy bracket respectively.
Preferably, the developing ring is made of platinum-iridium alloy.
Further, the first support comprises two net structures, and the first support is made of nickel titanium wires.
Furthermore, the second support comprises a net structure, and the second support is made of polymer fibers.
The invention has at least the following beneficial technical effects:
1. the thrombus taking bracket component for removing and capturing the broken thrombus provided by the invention grabs the thrombus through the nickel-titanium wire mesh structure, filters and captures broken thrombus fragments through the polymer fiber mesh structure, can remove the thrombus to the maximum extent, ensures that the thrombus is removed completely, and does not leave residues.
2. The thrombus taking bracket assembly for removing thrombus and capturing broken thrombus provided by the invention can not cause injury to the blood vessel wall in the thrombus taking process.
3. The thrombus removal bracket assembly for removing thrombus and capturing broken thrombus provided by the invention can remove thrombus at one time, and reduce the number of times of thrombus removal and operation time.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic view of a thrombectomy support assembly according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a sidebranch structure provided in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic view of a thrombectomy support according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a first bracket structure according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view of a second bracket according to a preferred embodiment of the present invention.
In the figure, 1-conveying pipe, 2-conveying pipe joint, 3-side branch pipe, 4-two-way valve, 5-bracket connecting pipe, 51-developing ring, 6-bracket connecting pipe joint, 7-thrombus taking bracket, 71-first bracket, 72-second bracket and 73-catheter.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1, the stent assembly for removing thrombus and capturing ruptured thrombus provided by the preferred embodiment of the invention comprises a delivery pipe 1, a delivery pipe joint 2, a stent connecting pipe 5, a stent connecting pipe joint 6 and a thrombus removal stent 7. The conveying pipe 1 is of a tubular structure, and the support connecting pipe 5 is nested in a through hole of the conveying pipe 1. The thrombus removal support 7 is positioned at the far end of the support connecting pipe 5, and the thrombus removal support 7 is sleeved on the support connecting pipe 5 and is connected with the support connecting pipe 5. Delivery tube connector 2 is connected to the proximal end of delivery tube 1, and stent connector 5 is inserted through delivery tube connector 2, and stent connector 5 is pre-installed on delivery tube 1 through delivery tube connector 2. The stent connecting tube joint 6 is connected to the proximal end of the stent connecting tube 5.
In the invention, one end of the embolectomy support assembly, which is close to an operator, is taken as a proximal end, and the other end of the embolectomy support assembly, which is opposite to the operator, is taken as a distal end. That is, the end of the stent connecting adapter 6 is located at the proximal end, and the end of the thrombectomy stent 7 is located at the distal end.
The thrombus taking support 7 can be contracted in the delivery pipe 1, and when the delivery pipe 1 does not reach the thrombus position, the thrombus taking support 7 is contracted in the delivery pipe 1; when the thrombus taking position is reached, the conveying pipe 1 penetrates through the thrombus, the thrombus taking support 7 is pushed out of the conveying pipe 1 through the support connecting pipe 5 to take out the thrombus, then the thrombus taking support 7 is pulled back to the conveying pipe 1 together with the thrombus, and then the whole thrombus taking support assembly is pulled out of the human body to finish the thrombus taking operation.
As shown in fig. 2, the distal end of the delivery pipe joint 2 is of a spiral structure, which can effectively reduce the stress strain of the delivery pipe 1. One section of the lateral branch pipe 3 is connected with the side surface of the conveying pipe joint 2, the other end of the lateral branch pipe 3 is connected with the two-way valve 4, the exhaust effect can be achieved in the process that the conveying pipe 1 penetrates through the blood vessel, and the resistance of the conveying pipe 1 when the conveying pipe passes through the blood vessel is reduced.
As shown in fig. 3, the stent connecting tube 5 is provided with developing rings 51 on both sides of the thrombectomy stent 7, and the developing rings 51 are accurately positioned during the operation.
In this embodiment, the developing ring 51 may be made of platinum-iridium alloy.
As shown in fig. 3, the distal end of the stent connecting tube 5 is a conical structure, and the stent connecting tube 5 has a hole with a diameter of about 1mm, which can track 0.038 feet of guide wires and reduce the resistance of the stent connecting tube 5 when pushed in a blood vessel.
As shown in fig. 3, 4 and 5, the thrombus removal stent 7 comprises a first stent 71 and a second stent 72, wherein the first stent 71 has two net structures, is woven by nickel-titanium wires, and is formed by heat treatment and shaping so as to capture thrombus. The second stent 72 has a mesh structure composed of polymer fibers, and can capture thrombus fragments as small as 20 μm while maintaining blood flow in the blood vessel. In the thrombus taking process, the second stent 72 is tightly attached to the blood vessel wall, so that the blood vessel wall cannot be damaged, and the second stent 72 captures the broken thrombus fragments of the first stent 71 in the thrombus pulling and dragging process, so that the thrombus fragments cannot rush to the deepest part of the blood vessel along with the blood flow. The thrombus removal bracket 7 consisting of the first bracket 71 and the second bracket 72 can remove thrombus in the blood vessel more safely, efficiently and thoroughly.
As shown in fig. 3, the inside of the thrombectomy stent 7 is provided with a catheter 73, which can effectively match the passage of the 0.038-foot guide wire, and prevent the guide wire from passing out of the mesh of the thrombectomy stent 7 during the operation.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An embolectomy support assembly for thrombus removal and capturing ruptured thrombus, comprising a delivery tube, a stent connecting tube nested within a through-hole of the delivery tube, and an embolectomy support connected to a distal end of the stent connecting tube, the embolectomy support configured to be retractable within the delivery tube; the thrombectomy stent includes a first stent and a second stent, the second stent being located at a distal end of the first stent, the second stent being configured to capture a smaller thrombus than the first stent can capture.
2. The embolectomy support assembly of claim 1, further comprising a delivery adapter coupled to the proximal end of the delivery tube, the stent connector extending through the delivery adapter.
3. The thrombectomy support assembly of claim 2, wherein the distal end of the delivery tube adaptor is configured in a helical configuration.
4. The thrombectomy support assembly of claim 2, wherein the lateral side of the delivery tube adaptor is connected to a lateral branch tube, and one end of the lateral branch tube is connected to a two-way valve.
5. The embolectomy support assembly of claim 1, further comprising a stent connector adapter coupled to a proximal end of the stent connector.
6. The embolectomy stent assembly of claim 1 wherein the distal end of the stent connecting tube is tapered.
7. The thrombectomy stent assembly of claim 6, wherein one visualization ring is disposed on each side of the thrombectomy stent on the stent connecting tube.
8. The thrombectomy stent assembly of claim 7, wherein the visualization ring is made of platinum-iridium alloy.
9. The thrombectomy stent assembly of claim 1, wherein the first stent comprises two mesh structures, and the first stent is made of nitinol.
10. The thrombectomy stent assembly of claim 1, wherein the second stent comprises a mesh structure, and the second stent is made of polymer fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422454.4A CN114098906A (en) | 2021-11-26 | 2021-11-26 | A get and tie bracket component that is used for thrombus to clear away and catches thrombus that breaks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422454.4A CN114098906A (en) | 2021-11-26 | 2021-11-26 | A get and tie bracket component that is used for thrombus to clear away and catches thrombus that breaks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114098906A true CN114098906A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111422454.4A Pending CN114098906A (en) | 2021-11-26 | 2021-11-26 | A get and tie bracket component that is used for thrombus to clear away and catches thrombus that breaks |
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| CN (1) | CN114098906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115153755A (en) * | 2022-06-17 | 2022-10-11 | 上海玮琅医疗科技有限公司 | Thrombus capturing bracket and manufacturing method thereof |
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| US20210353317A1 (en) * | 2013-03-14 | 2021-11-18 | Neuravi Limited | Dual layer icad device |
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2021
- 2021-11-26 CN CN202111422454.4A patent/CN114098906A/en active Pending
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| US20210353317A1 (en) * | 2013-03-14 | 2021-11-18 | Neuravi Limited | Dual layer icad device |
| CN104434263A (en) * | 2014-12-01 | 2015-03-25 | 中国人民解放军第二军医大学 | Regulating intracranial intravascular thrombus extraction device |
| CN105476689A (en) * | 2015-12-28 | 2016-04-13 | 威海维心医疗设备有限公司 | Thrombus extraction support device |
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| CN115153755A (en) * | 2022-06-17 | 2022-10-11 | 上海玮琅医疗科技有限公司 | Thrombus capturing bracket and manufacturing method thereof |
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