CN114098905A - Bracket component is caught to thrombus - Google Patents
Bracket component is caught to thrombus Download PDFInfo
- Publication number
- CN114098905A CN114098905A CN202111422326.XA CN202111422326A CN114098905A CN 114098905 A CN114098905 A CN 114098905A CN 202111422326 A CN202111422326 A CN 202111422326A CN 114098905 A CN114098905 A CN 114098905A
- Authority
- CN
- China
- Prior art keywords
- stent
- thrombus
- tube
- thrombus capture
- support
- 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
- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 122
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 238000012800 visualization Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims 1
- 210000004204 blood vessel Anatomy 0.000 abstract description 12
- 208000005189 Embolism Diseases 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000002792 vascular Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000010102 embolization Effects 0.000 description 2
- 229920005594 polymer fiber Polymers 0.000 description 2
- 206010016654 Fibrosis Diseases 0.000 description 1
- 208000037273 Pathologic Processes Diseases 0.000 description 1
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000013156 embolectomy Methods 0.000 description 1
- 238000013161 embolization procedure Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000004088 microvessel Anatomy 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
- 210000000056 organ Anatomy 0.000 description 1
- 230000009054 pathological process Effects 0.000 description 1
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000013151 thrombectomy Methods 0.000 description 1
- 230000002537 thrombolytic effect Effects 0.000 description 1
- 210000003462 vein Anatomy 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
-
- 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
Abstract
The invention discloses a thrombus capturing support assembly which comprises a conveying pipe, a support traction pipe, a support connecting pipe and a thrombus capturing support, wherein the support traction pipe is nested in a through hole of the conveying pipe, the support connecting pipe is nested in the through hole of the support traction pipe, the thrombus capturing support is connected with the far end of the support connecting pipe, and the thrombus capturing support is configured to be capable of being overturned along the length direction of the support connecting pipe and capable of being contracted in the support traction pipe. The invention can ensure that the thrombus is removed completely, can not damage the blood vessel and reduce the complication caused by embolism.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a thrombus capture support assembly.
Background
Thrombosis is a common pathological process in clinic, and intravascular thrombosis causes tissue ischemia and necrosis to affect organ functions and endanger life. Thrombosis can be seen in the atrioventricular cavities, arteries, veins and microvessels.
For patients with severe thrombus fibrosis, the thrombolytic treatment effect is not obvious, and mechanical thrombus removal is a very quick and effective treatment way for quickly eliminating thrombus. The mechanical thrombus removal comprises catheter suction and stent thrombus removal, but the two thrombus removal modes have common defects, the thrombus can be removed generally 1-6 times in the first thrombus removal operation, and thus, the blood vessel is easily damaged by repeated operation, and the blood vessel is broken; secondly, in the process of sucking and dragging thrombus, the potential thrombus is broken, and the thrombus fragments enter the deep part of the blood vessel along with the flow of blood to cause secondary embolism.
Accordingly, those skilled in the art have sought to provide a thrombus capture stent assembly that addresses the distal vascular embolization complications of conventional embolization procedures and that maximizes thrombus removal.
Disclosure of Invention
In view of the defects in the prior art, the technical problem to be solved by the present invention is how to provide a thrombus capture stent assembly which can solve the complications of distal vascular embolization in the conventional thrombus removal method and can achieve the maximum thrombus removal.
In order to achieve the above object, the present invention provides a thrombus capture stent assembly comprising a delivery tube, a stent traction tube, a stent connecting tube, and a thrombus capture stent, wherein the stent traction tube is nested in a through hole of the delivery tube, the stent connecting tube is nested in a through hole of the stent traction tube, the thrombus capture stent is connected with a distal end of the stent connecting tube, and the thrombus capture stent is configured to be capable of being flipped along a length direction of the stent connecting tube and to be contracted in the stent traction tube.
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.
The bracket traction tube joint is connected with the near end of the bracket traction tube, and the bracket connecting tube penetrates through the bracket traction tube joint.
Further, the bracket connecting pipe joint is connected with the near end of the bracket connecting pipe.
Preferably, the thrombus capture stent is funnel-shaped, and the small-diameter end of the thrombus capture stent is connected with the stent connecting tube.
Preferably, the distal end of the stent pull tube is flared, the flare of the stent pull tube being configured to be retractable within the delivery tube.
Furthermore, the circumference of the big-diameter end of the thrombus capture support is provided with a developing block, and the developing block is connected with the bell mouth of the support traction tube through a connecting wire.
Preferably, the connecting wire is made of a nickel titanium wire.
Preferably, the thrombus capture scaffold is made of polymer fibers.
Preferably, the distal end of the stent connecting tube is tapered.
The invention has at least the following beneficial technical effects:
1. according to the thrombus capture support assembly provided by the invention, thrombus is cut by overturning the thrombus capture support, and then the thrombus is captured by the overturned thrombus capture support, so that the thrombus can be removed to the greatest extent, the thrombus is ensured to be cleaned, and no residue is left.
2. According to the double-guide-wire cutting thrombus and thrombus capturing support assembly provided by the invention, the thrombus capturing support is made of a high-molecular material, and is tightly attached to a blood vessel wall when the thrombus is taken, so that the blood vessel is not damaged; the funnel-shaped structure can effectively capture thrombus fragments and simultaneously ensure the blood flow in the blood vessel.
3. The double-guide-wire cutting thrombus and thrombus capturing support assembly provided by the invention can be used for one-time thrombus extraction, reduces the number of thrombus extraction times and operation time in an operation, and can avoid complications caused by distal vascular embolism in the traditional thrombus extraction technology.
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 thrombus capture stent assembly provided in accordance with a preferred embodiment of the present invention;
FIG. 2 is a schematic view of a thrombus capture stent assembly retracted according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view of a stent connecting tube according to a preferred embodiment of the present invention;
FIG. 4 is a schematic structural view of a thrombus capture stent provided by a preferred embodiment of the present invention;
FIG. 5 is a schematic view of a thrombus capture stent attachment provided by a preferred embodiment of the present invention;
FIG. 6 is an elevational view of a thrombus capture stent provided by a preferred embodiment of the present invention;
FIG. 7 is a schematic view of the cutting and embolectomy process of the stent assembly provided by the preferred embodiment of the present invention.
In the figure, 1-duct, 2-duct junction, 3-stent traction duct, 4-stent traction duct, 5-stent junction duct, 6-stent junction duct, 7-thrombus capture stent, 71-thrombus capture stent crimp, 72-visualization block, 73-connecting wire.
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 thrombus capture stent assembly provided by the preferred embodiment of the present invention comprises a delivery tube 1, a delivery tube connector 2, a stent traction tube 3, a stent traction tube connector 4, a stent connecting tube 5, a stent connecting tube connector 6 and a thrombus capture stent 7. The conveying pipe 1 and the support traction pipe 3 are of tubular structures, the support traction pipe 3 is nested in a through hole of the conveying pipe 1, and the support connecting pipe 5 is nested in a through hole of the support traction pipe 3. The thrombus capture stent 7 is located at the distal end of the stent connecting tube 5 and is connected to the stent connecting tube 5. The delivery pipe joint 2 is connected with the near end of the delivery pipe 1, and the support traction pipe 3 passes through the delivery pipe joint 2; the stent traction tube joint 4 is connected with the near end of the stent traction tube 3, and the stent connecting tube 5 passes through the stent traction tube joint 4; 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 thrombus capture stent assembly close to an operator is taken as a proximal end, and the other opposite end is taken as a distal end. That is, the end of the stent connecting hub 6 is located at the proximal end, and the end of the thrombus-capturing stent 7 is located at the distal end.
The thrombus capture stent 7 can be turned over in the length direction of the stent connecting tube 5, which is the proximal-to-distal or distal-to-proximal direction of the stent connecting tube 5. The overturning of the thrombus-capturing stent 7 means that the outer edge of the thrombus-capturing stent 7 is overturned from one side to the other side relative to the inner edge, thrombus is cut from the vessel wall in the overturning process, and the fallen thrombus is collected by the overturned thrombus-capturing stent 7. The mode of this kind of upset has avoided traditional thrombectomy support cutting, has dragged the thrombus and has taken place the thrombus breakage and flow to blood vessel depths along with blood, causes the condition of secondary embolism.
The thrombus-capturing stent 7 can also be retracted within the stent graft 3. As shown in FIG. 2, the stent traction tube 3 is retracted within the delivery tube 1 and the thrombus-capturing stent 7 is retracted within the stent traction tube 3 without reaching the thrombus site. The stent traction tube 3 is contracted by operating the stent traction tube joint 4; the stent connecting pipe joint 6 is operated to drive the stent connecting pipe 5, so that the thrombus capture stent 7 is contracted.
As shown in FIG. 3, the distal end of the stent graft 3 of this embodiment is flared and is positioned between the thrombus-capturing stent 7 and the distal end of the delivery tube 1 when thrombus removal is performed.
The bell mouth of the support traction tube 3 is elastic and soft material, can be freely stretched and released in the conveying tube 1, and can not cause damage to the vessel wall. When the stent pull tube 3 is retracted within the delivery tube 1, the flare is also retracted within the delivery tube 1.
As shown in fig. 4 and 5, in the present embodiment, the thrombus capture stent 7 has a funnel shape, and the small-diameter end of the thrombus capture stent 7 is connected to the stent connecting tube 5 to form an inner edge; the large diameter end of the thrombus-capturing stent 7 constitutes an outer edge which can be turned from side to side with respect to the inner edge along the length direction of the stent connecting tube 5. In this embodiment, the outer edge of the thrombus capture stent 7 is in a curved shape to form a thrombus capture stent bead 71, which facilitates stretching and turning of the thrombus capture stent 7 during the operation.
The developing block 72 is circumferentially arranged at the large-diameter end of the thrombus capture support 7, the developing block 72 is connected with the outer edge of the bell mouth of the support traction tube 3 through a connecting wire 73, and the thrombus capture support 7 can be overturned by dragging the support traction tube 3. In the present embodiment, the number of the development blocks 72 and the number of the connection lines 73 are four, and the development blocks 72 are arranged at 90 ° in the circumferential direction of the outer edge of the thrombus capture stent 7.
As shown in FIG. 6, the outer diameter of the outer edge of the bell mouth of the stent traction tube 3 is kept consistent with the outer diameter of the thrombus-capturing stent bead 71, so that the thrombus-capturing stent 7 can be better dragged.
In the present embodiment, the thrombus capture stent 7 is woven from polymer fibers, and the mesh of the thrombus capture stent 7 can capture thrombus fragments as small as 40 μm while maintaining the blood flow in the blood vessel.
In this embodiment, the connecting wire 73 is made of a superelastic nickel-titanium wire.
As shown in fig. 4 and 6, the distal end of the stent connecting tube 5 is of a conical design, the aperture can be matched with a guide wire of 0.038 inches, and the conical design can reduce the resistance of the tube to pushing in the blood vessel.
The development block 72 realizes the positioning of the thrombus capture stent 7 in the blood vessel, and realizes accurate thrombus capture. The developing block 72 may be made of platinum-iridium alloy.
In other embodiments of the present invention, the shape of the thrombus-capturing stent 7 is not limited to a funnel shape.
Fig. 7 is a schematic view showing the process of inverting and capturing the thrombus in the blood vessel by the thrombus capture stent assembly of this embodiment. When the thrombus taking operation is carried out, after the conveying pipe 1 passes through the thrombus position along the guide wire, the conveying pipe 1 is retracted, and the thrombus capturing bracket 7 is released; and the delivery pipe 1 is continuously withdrawn, and the horn mouth at the far end of the stent traction pipe 3 is released. Drag support traction tube 3 in the operation process, connecting wire 73 is dragged to support traction tube 3, and connecting wire 73 makes the thrombus catch support 7 upset, and at this in-process, the thrombus catches support turn-up 71 and hugs closely on the vascular wall, can not cause the damage of vascular wall, and the thrombus on the vascular wall is caught support 7 cutting and collection by the thrombus. After the thrombus is removed, the stent traction tube 3 and the thrombus capture stent 7 are contracted in the delivery tube 1 together, and then the delivery tube 1 is withdrawn out of the human body along the guide wire.
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. A thrombus capture stent assembly comprising a delivery tube, a stent delivery tube nested within a through-hole of the delivery tube, a stent connector tube nested within a through-hole of the stent delivery tube, a thrombus capture stent connected with a distal end of the stent connector tube, the thrombus capture stent configured to be evertable along a length of the stent connector tube and retractable within the stent delivery tube.
2. The thrombus capture stent assembly of claim 1, further comprising a delivery adapter coupled to a proximal end of the delivery tube, the stent connector tube passing through the delivery adapter.
3. The thrombus capture stent assembly of claim 1, further comprising a stent pull adapter coupled to a proximal end of the stent pull tube, the stent connector extending through the stent pull adapter.
4. The thrombus capture stent assembly of claim 1, further comprising a stent connector adapter coupled to a proximal end of the stent connector.
5. The thrombus capture stent assembly of claim 1, wherein the thrombus capture stent is funnel shaped with a small diameter end of the thrombus capture stent connected to the stent connector tube.
6. The thrombus capture stent assembly of claim 5, wherein the distal end of the stent pull tube is flared, the flared end of the stent pull tube configured to be retractable within the delivery tube.
7. The thrombus capture stent assembly of claim 6, wherein the large diameter end of the thrombus capture stent is circumferentially provided with a visualization block, and the visualization block is connected with the bell mouth of the stent traction tube through a connecting wire.
8. The thrombus capture stent assembly of claim 7, wherein the connecting wires are nickel titanium wires.
9. The thrombus capture stent assembly of claim 1, wherein the thrombus capture stent is made of polymeric fibers.
10. The thrombus capture stent assembly of claim 1, wherein the distal end of the stent connecting tube is tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422326.XA CN114098905A (en) | 2021-11-26 | 2021-11-26 | Bracket component is caught to thrombus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111422326.XA CN114098905A (en) | 2021-11-26 | 2021-11-26 | Bracket component is caught to thrombus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114098905A true CN114098905A (en) | 2022-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111422326.XA Pending CN114098905A (en) | 2021-11-26 | 2021-11-26 | Bracket component is caught to thrombus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114098905A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070112374A1 (en) * | 2005-10-18 | 2007-05-17 | Cook Incorporated | Invertible filter for embolic protection |
| US20170035445A1 (en) * | 2015-08-06 | 2017-02-09 | Kp Medcure, Inc. | Axial lengthening thrombus capture system |
| CN107126245A (en) * | 2017-04-30 | 2017-09-05 | 沈阳新智源医疗用品有限公司 | A kind of taking thrombus device and its application method |
| CN212261449U (en) * | 2020-05-11 | 2021-01-01 | 上海微创心脉医疗科技股份有限公司 | Thrombus removing device |
| CN113208690A (en) * | 2020-02-06 | 2021-08-06 | 江苏暖阳医疗器械有限公司 | Thrombectomy support system with near-end protection and far-end protection functions |
| CN214342506U (en) * | 2020-12-15 | 2021-10-08 | 上海融脉医疗科技有限公司 | Thrombus crushing and collecting mechanism of thrombus capturing and removing catheter device |
| CN113599017A (en) * | 2021-08-09 | 2021-11-05 | 上海腾复医疗科技有限公司 | Thrombus taking device |
-
2021
- 2021-11-26 CN CN202111422326.XA patent/CN114098905A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070112374A1 (en) * | 2005-10-18 | 2007-05-17 | Cook Incorporated | Invertible filter for embolic protection |
| US20170035445A1 (en) * | 2015-08-06 | 2017-02-09 | Kp Medcure, Inc. | Axial lengthening thrombus capture system |
| CN107126245A (en) * | 2017-04-30 | 2017-09-05 | 沈阳新智源医疗用品有限公司 | A kind of taking thrombus device and its application method |
| CN113208690A (en) * | 2020-02-06 | 2021-08-06 | 江苏暖阳医疗器械有限公司 | Thrombectomy support system with near-end protection and far-end protection functions |
| CN212261449U (en) * | 2020-05-11 | 2021-01-01 | 上海微创心脉医疗科技股份有限公司 | Thrombus removing device |
| CN214342506U (en) * | 2020-12-15 | 2021-10-08 | 上海融脉医疗科技有限公司 | Thrombus crushing and collecting mechanism of thrombus capturing and removing catheter device |
| CN113599017A (en) * | 2021-08-09 | 2021-11-05 | 上海腾复医疗科技有限公司 | Thrombus taking device |
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