CN215228050U - Embolic protection device for tortuous vessels - Google Patents
Embolic protection device for tortuous vessels Download PDFInfo
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- CN215228050U CN215228050U CN202120714596.7U CN202120714596U CN215228050U CN 215228050 U CN215228050 U CN 215228050U CN 202120714596 U CN202120714596 U CN 202120714596U CN 215228050 U CN215228050 U CN 215228050U
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- protection device
- core pipe
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- embolic protection
- skeleton
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- 230000003073 embolic effect Effects 0.000 title claims description 28
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 208000005189 Embolism Diseases 0.000 claims abstract description 29
- 230000008093 supporting effect Effects 0.000 claims abstract description 25
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 229920005597 polymer membrane Polymers 0.000 claims 1
- 230000002792 vascular Effects 0.000 abstract description 10
- 230000006835 compression Effects 0.000 description 15
- 238000007906 compression Methods 0.000 description 15
- 239000007787 solid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 229920006254 polymer film Polymers 0.000 description 5
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 206010047163 Vasospasm Diseases 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000005574 cross-species transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The utility model provides an embolism protection device for tortuous blood vessel, including the core pipe, the cover is located on the core pipe and is used for filtering the filtration piece of embolus, be umbelliform and be used for supporting the skeleton of filtering the piece, sliding compressor and recovery system, the opening of filtering the piece sets up towards the near-end of core pipe, skeleton and filtration piece homonymy support, embolism protection device's length effectively shortens in the axial, the product is in crooked vascular department compliance, adherence nature is better, can use in tortuous blood vessel, sliding compressor includes the traction wire, spacing ring and sliding sheath, sliding sheath cover locates on the core pipe and can move along the core pipe axial, the spacing ring is fixed in on the core pipe and is located the moving trajectory of sliding sheath, one end of traction wire is fixed in the skeleton outer end, the other end passes the spacing ring and is fixed in the distal end of sliding sheath, it just can drive the traction wire and stimulate skeleton outer end to compress to the core pipe direction to remove sliding sheath, the recovery mode is simple.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to embolism protection device for tortuous blood vessel.
Background
When the interventional mode is used for treating vascular embolism type pathological changes, embolus or tissues often fall off from a narrow part of a blood vessel to cause embolism of the blood vessel or tissues with a small diameter at the far end, so that the risk of surgical complications is greatly improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an embolic protection device for tortuous blood vessel.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an embolism protection device for tortuous blood vessel, including the core pipe, the cover is located on the core pipe and is used for filtering the filtration piece of embolus, be umbelliform and be used for supporting the skeleton of filtering the piece, slip compressor and recovery system, the opening of filtering the piece sets up towards the near-end of core pipe, the skeleton supports with filtering a piece homonymy, the slip compressor includes the traction wire, spacing ring and slip sheath, slip sheath locates on the core pipe and can be along core pipe axial displacement, the spacing ring is fixed in on the core pipe and is located the removal orbit of slip sheath, the one end of traction wire is fixed in on the skeleton outer end, the other end passes on the distal end that the spacing ring is fixed in the slip sheath.
Furthermore, recovery system includes push rod and outer tube, and the push rod is equipped with the through-hole, and the internal diameter of through-hole is greater than the external diameter of core pipe, and the push rod promotes the slip sheath and removes in order to drive the traction wire pulling skeleton outer end to the compression of core pipe direction.
Furthermore, the outer pipe is sleeved on the push rod, and the inner diameter of the outer pipe is larger than the outer diameter of the sliding compressor and the outer diameter of the framework when the framework is in a compression state.
Further, the skeleton includes solid fixed ring and many spinal branchs vaulting pole, gu fixed ring fixes on the core pipe with filtering together, the inner of bracing piece is fixed on solid fixed ring, and the outer end perk outwards extends and is umbelliform, and the outer end of many spinal branchs vaulting pole forms the support circle and filters piece fixed connection.
Furthermore, the diameter of the support circle is larger than the diameter of the blood vessel so that the outer end of the framework support filter piece adheres to the wall.
Furthermore, the outer end of the supporting rod is provided with a contact section which is in contact with the wall of the blood vessel, and the contact section is obliquely arranged towards the core tube relative to the supporting rod; the outer end of the supporting rod is provided with an arc rod, and the radius of the arc rod is equal to that of the supporting circle; or the outer ends of the supporting rods are provided with wavy line connecting rods, and the outer ends of two adjacent supporting rods are connected through the wavy line connecting rods.
Furthermore, a plurality of bracing pieces set up along solid fixed ring's circumference equipartition interval.
Further, when the framework is in the unfolding state, the far end of the sliding sheath contacts the limiting ring; when the framework is in a compressed state, the near end of the sliding sheath contacts the limiting ring, and the distal end and the near end of the sliding sheath are both provided with the developing rings.
Furthermore, the filtering piece is a conical polymer film, filtering holes are formed in the conical polymer film, and the aperture range of the filtering holes is 80-130 um.
In the present invention, the "proximal end" refers to the end close to the doctor performing the operation, and the "distal end" refers to the end away from the doctor performing the operation. The outer end refers to the end far away from the core tube, and the inner end refers to the end close to the core tube.
After the technical scheme is adopted, the utility model has the advantages of as follows:
1. the framework and the filtering piece are supported at the same side, the length of the embolic protection device is effectively shortened in the axial direction, the product has better compliance and adherence at the position of a bent blood vessel, and the embolic protection device can be applied to a tortuous blood vessel to avoid the problem that emboli escape caused by poor adherence of the traditional embolic protection device in the tortuous blood vessel. Traditional embolism protection device's recovery all is that the head end through recovery system removes hard compression skeleton, leads to retrieving the power great, is difficult for retrieving, and recovery system's head end is hindered easily simultaneously and is reached the vascular wall, and the utility model discloses a set up the slip compressor, just can drive the shrink of traction wire pulling skeleton outer end to the core pipe direction through removing the slip sheath, the recovery mode is simple.
2. The internal diameter of push rod through-hole is greater than the external diameter of core pipe for the push rod can be carried and filter a near-end opening part through the seal wire and promote the slip sheath, can make the traction wire pulling skeleton outer end compress to the core pipe direction through setting up the push rod and promote the slip sheath, easy operation, and the push rod diameter reduces, is difficult for hindering the vascular wall, operates safelyr.
3. The internal diameter of outer tube is greater than the external diameter of sliding compressor and skeleton when the skeleton is in compression state for when the skeleton is in compression state, can make the outer tube totally cladding filter the piece through promoting the outer tube, the opening that the outer tube will filter the piece covers at recovery in-process, can avoid retrieving in-process bolt and spill over.
4. The skeleton includes solid fixed ring and bracing piece, and the one end of skeleton is fixed on the core pipe together through solid fixed ring and filtration piece, and the other end outwards extends through the bracing piece perk and is the umbelliform, plays the effect of support to the filter screen.
5. The diameter of the support circle is greater than the setting of the diameter of the blood vessel so that the framework supports the outer end of the filter piece and adheres to the wall, the wall adhering effect of the embolism protection device is guaranteed, and then the embolus is avoided passing through the gap between the filter piece and the blood vessel wall, and the embolus is not easy to leak.
6. The outer end of bracing piece is equipped with the arc pole to increase the holding power of bracing piece, increase skeleton and vascular area of contact simultaneously, guarantee that embolism protection device can not shift because of blood stream impact, the radius of arc pole equals the radius of support circle, makes the shape of arc pole unanimous with the shape of filtering a piece outer end. Or, the outer end of bracing piece is equipped with the wave line connecting rod, and the outer end of two adjacent bracing pieces is passed through the wave line connecting rod and is connected, further promotes the supporting effect of bracing piece, guarantees that embolism protection device can not shift because of blood stream impact, and the wave line connecting rod can not influence the skeleton compression simultaneously.
7. A plurality of bracing pieces set up along solid fixed ring's circumference equipartition interval for the circumference holding power of skeleton is more even, avoids local holding power great to cause vasospasm, makes embolic protection device's use safer.
8. Through all installing the development ring at the distal end and the near-end of slip sheath for the expansion and the compression state of device can be monitored, makes recovery operation more convenient, effectively avoids the incomplete embolus that leads to of skeleton expansion to escape or the incomplete entanglement that causes other apparatus in the art of skeleton compression simultaneously.
9. The filtering piece is a conical polymer film, the shape of the filtering piece is matched with that of an umbrella-shaped framework, and the aperture range of the filtering holes is 80-130um, so that not only can the embolus be effectively filtered, but also the blood can be contained to flow out of the filtering piece.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of an embolic protection device according to a first embodiment of the present invention.
Fig. 2 is a schematic view of the framework and the sliding compressor of the embolic protection device according to the first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a filter element in an embolic protection device according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a framework in an embolic protection device according to a first embodiment of the present invention.
Fig. 5 is a side view of a frame of an embolic protection device according to a first embodiment of the present invention.
Fig. 6 is a diagram illustrating a usage state of the framework of the embolic protection device according to the first embodiment of the present invention in a deployed state.
Fig. 7 is a diagram illustrating a first use state of the embolic protection device according to the present invention when the frame is in a compressed state.
Fig. 8 is a schematic structural diagram of a framework in an embolic protection device according to a second embodiment of the present invention.
Fig. 9 is a side view of a frame of an embolic protection device according to a second embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a framework in an embolic protection device according to a third embodiment of the present invention.
Fig. 11 is a side view of a frame of an embolic protection device according to a third embodiment of the present invention.
The names of the components marked in the figures are as follows:
100. a core tube; 200. a filter member; 210. a filtration pore; 300. a framework; 310. a fixing ring; 320. a support bar; 321. a contact section; 322. an arc rod; 323. a wavy line connecting rod; 400. a sliding compressor; 410. drawing wires; 420. a limiting ring; 430. a sliding sheath; 500. a push rod; 600. a guide wire; 700. the vessel wall; 800. a first developing circle; 900. and a second developing circle.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.
The first embodiment is as follows:
as shown in fig. 1 to 7, the utility model provides a embolism protection device, including the core pipe 100, the cover is located on the core pipe 100 and is used for filtering the filtration piece 200 of embolus, be umbelliform and be used for supporting the skeleton 300 of filtering the piece 200, sliding compressor 400 and recovery system, the inside cavity of core pipe 100 is equipped with the inner chamber that supplies the seal wire 600 to pass, the opening of filtering the piece 200 sets up towards the near-end of core pipe 100, skeleton 300 supports with filtering piece 200 homonymy, the length of embolism protection device effectively shortens in the axial, the product is in crooked blood vessel department compliance, adherence is better, can use in tortuous blood vessel, avoid traditional embolism protection device because of the not good problem that causes the embolus to escape of adherence in tortuous blood vessel. The sliding compressor 400 comprises a traction wire 410, a limiting ring 420 and a sliding sheath 430, the sliding sheath 430 is sleeved on the core tube 100 and can move axially along the core tube 100, the limiting ring 420 is fixed on the core tube 100 and is positioned in the moving track of the sliding sheath 430, one end of the traction wire 410 is fixed on the outer end of the framework 300, the other end of the traction wire passes through the limiting ring 410 and is fixed on the far end of the sliding sheath 430, and the sliding sheath 430 moves to drive the traction wire 410 to pull the outer end of the framework 300 to compress towards the core tube 100. Traditional embolism protection device's recovery all is that the head end through recovery system removes hard compression skeleton, leads to retrieving the power great, is difficult for retrieving, and recovery system's head end is hindered easily simultaneously and the vascular wall, and the utility model discloses a set up the slip compressor, the slip sheath removes and just can drive the shrink of traction wire pulling skeleton outer end to the core pipe direction, and the recovery mode is simple.
The limiting ring 410 is provided with one or more axially-penetrating cavities, the traction wire 410 penetrates through the cavities, the two ends of the traction wire respectively fix the framework and the sliding sheath, and particularly, the traction wire 410 is a high-strength and high-compliance wire material.
Recovery system includes push rod 500 and outer tube, and push rod 500 is equipped with the through-hole, and the internal diameter of through-hole is greater than the external diameter of core pipe 100 for the push rod can be carried to filter a piece near-end opening part through the seal wire and promote to the slip sheath, promotes the slip sheath through the push rod and can make the traction wire pulling skeleton outer end to the compression of core pipe direction, easy operation, and the push rod diameter reduces, is difficult for hindering the vascular wall, and the operation is safer.
On push rod 500 was located to the outer pipe box, the internal diameter of outer tube was greater than the external diameter of sliding compressor and skeleton when the skeleton was in compression state for when the skeleton was in compression state, can make the outer tube complete cladding filter piece through promoting the outer tube, the opening that the outer tube will filter the piece covers at the recovery in-process, can avoid retrieving the in-process bolt and spill over.
The diameter of the support circle is greater than the setting of the diameter of the blood vessel so that the framework supports the outer end of the filter piece and adheres to the wall, the wall adhering effect of the embolism protection device is guaranteed, and then the embolus is avoided passing through the gap between the filter piece and the blood vessel wall, and the embolus is not easy to leak.
The outer end of bracing piece 320 is equipped with the contact section 321 with the contact of vascular wall 700, and contact section 321 sets up towards core pipe 100 slope for bracing piece 320, reduces the contained angle between slope section and the vascular wall, avoids the outer end of bracing piece to hinder the vascular wall.
The plurality of support rods 320 are arranged along the circumferential uniform distribution of the fixing ring 310 at intervals, so that the circumferential supporting force of the framework 300 is more uniform, vasospasm caused by large local supporting force is avoided, and the use of the embolic protection device is safer.
The stop collar 420 is made of a non-projection material and is visible under development conditions. As shown in fig. 6, with the frame 300 in the expanded state, the distal end of the sliding sheath 430 contacts the stop collar 420; as shown in fig. 7, when the framework 300 is in a compressed state, the proximal end of the sliding sheath 430 contacts the limiting ring 420, the distal end of the sliding sheath 430 is provided with the first developing ring 800, and the proximal end is provided with the second developing ring 900, so that the expansion and compression states of the device can be monitored, the recovery operation is more convenient, and meanwhile, entanglement with other instruments in the operation due to incomplete framework expansion or incomplete framework compression can be effectively avoided. Specifically, one end of the traction wire 410 fixed to the sliding sheath 430 is fixed to the first developing ring 800.
The filtering piece 200 is a conical polymer film, the conical polymer film is provided with filtering holes 210, the aperture range of the filtering holes is 80-130um, so that the filtering piece can not only ensure effective filtering of emboli, but also contain blood to flow out of the filtering piece. Specifically, the filter holes are formed by laser cutting or other processes.
Example two:
the main difference between this embodiment and the first embodiment is that the arrangement of the outer ends of the support rods is different.
As shown in fig. 8 and 9, in this embodiment, the outer end of the supporting rod 320 is provided with an arc rod 322 to increase the supporting force of the supporting rod, and at the same time, to increase the contact area between the framework and the blood vessel, so as to ensure that the embolic protection device does not shift due to blood flow impact, and the radius of the arc rod is equal to the radius of the supporting circle, so that the shape of the arc rod is consistent with the shape of the outer end of the filtering member.
Example three:
the main difference between this embodiment and the above-mentioned embodiments is that the arrangement of the outer ends of the support rods is different.
As shown in fig. 10 and 11, in this embodiment, the outer ends of the supporting rods 320 are provided with the wavy line connecting rods 323, and the outer ends of two adjacent supporting rods are connected through the wavy line connecting rods, so as to further improve the supporting effect of the supporting rods, ensure that the embolism protection device cannot shift due to blood flow impact, and meanwhile, the wavy line connecting rods cannot influence the compression of the skeleton.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (9)
1. The utility model provides an embolism protection device for tortuous blood vessel, includes that core pipe, cover locate on the core pipe and be used for filtering the filter piece of embolus, be umbelliform and be used for supporting skeleton, slip compressor and the recovery system of filtering the piece, filter the opening of piece and set up towards the near-end of core pipe, a serial communication port, the skeleton supports with filtering a piece homonymy, and the slip compressor includes traction wire, spacing ring and slip sheath, and slip sheath locates on the core pipe and can be along core pipe axial displacement, and the spacing ring is fixed in on the core pipe and is located the removal orbit of slip sheath, and on the skeleton outer end was fixed in to the one end of traction wire, the other end passed the spacing ring and is fixed in on the distal end of slip sheath.
2. The embolic protection device for tortuous vessels of claim 1, wherein the retrieval system comprises a push rod and an outer tube, the push rod is provided with a through hole, the inner diameter of the through hole is larger than the outer diameter of the core tube, and the push rod pushes the sliding sheath to move so as to drive the pull wire to pull the outer end of the frame to compress towards the core tube.
3. An embolic protection device for use in tortuous vessels as in claim 2, wherein the outer tube is fitted over the push rod and has an inner diameter greater than the outer diameter of the sliding compressor and the scaffold when the scaffold is in a compressed state.
4. An embolic protection device for tortuous vessels as in claim 1, wherein the frame comprises a fixing ring and a plurality of support rods, the fixing ring is fixed on the core tube together with the filter element, the inner ends of the support rods are fixed on the fixing ring, the outer ends of the support rods are tilted and extend outwards to form an umbrella shape, and the outer ends of the plurality of support rods form a support circle and are fixedly connected with the filter element.
5. An embolic protection device for tortuous vessels as in claim 4, wherein the diameter of the support circle is arranged larger than the vessel diameter to allow the outer ends of the scaffolding support filter to adhere to the wall.
6. An embolic protection device for tortuous vessels as in claim 4, wherein the outer ends of the support rods are provided with contact sections for contact with the vessel wall, the contact sections being disposed obliquely with respect to the support rods towards the core tube; the outer end of the supporting rod is provided with an arc rod, and the radius of the arc rod is equal to that of the supporting circle; or the outer ends of the supporting rods are provided with wavy line connecting rods, and the outer ends of two adjacent supporting rods are connected through the wavy line connecting rods.
7. An embolic protection device for use in tortuous vessels as in claim 4, wherein a plurality of said support rods are spaced circumferentially around the fixation ring.
8. An embolic protection device for use in tortuous vessels as in claim 1, wherein the distal end of the sliding sheath contacts a stop collar when the scaffold is in the deployed state; when the framework is in a compressed state, the near end of the sliding sheath contacts the limiting ring, and the distal end and the near end of the sliding sheath are both provided with the developing rings.
9. An embolic protection device for use in tortuous vessels as in claim 1, wherein the filter is a conical polymer membrane with filter pores ranging from 80 to 130 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120714596.7U CN215228050U (en) | 2021-04-08 | 2021-04-08 | Embolic protection device for tortuous vessels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120714596.7U CN215228050U (en) | 2021-04-08 | 2021-04-08 | Embolic protection device for tortuous vessels |
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| Publication Number | Publication Date |
|---|---|
| CN215228050U true CN215228050U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120714596.7U Active CN215228050U (en) | 2021-04-08 | 2021-04-08 | Embolic protection device for tortuous vessels |
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| CN (1) | CN215228050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159125A (en) * | 2022-01-05 | 2022-03-11 | 复旦大学附属中山医院 | Abdominal aorta self-expanding trumpet flower protection umbrella device |
-
2021
- 2021-04-08 CN CN202120714596.7U patent/CN215228050U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159125A (en) * | 2022-01-05 | 2022-03-11 | 复旦大学附属中山医院 | Abdominal aorta self-expanding trumpet flower protection umbrella device |
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Address after: 519000 Zhuhai City, Guangdong Province, Xiangzhou District, Tangjiawan Town Science and Technology 7 Road No. 1 Zhuhai Medium-Electricity High-tech Industrial Park, 4 1-B Units Patentee after: Tongqiao Medical Technology Co.,Ltd. Country or region after: China Address before: 519000 Zhuhai City, Guangdong Province, Xiangzhou District, Tangjiawan Town Science and Technology 7 Road No. 1 Zhuhai Medium-Electricity High-tech Industrial Park, 4 1-B Units Patentee before: ZHUHAI TONGQIAO MEDICAL TECHNOLOGY CO.,LTD. Country or region before: China |
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