CN109620350A - A kind of medical thrombus dredging structure - Google Patents
A kind of medical thrombus dredging structure Download PDFInfo
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- CN109620350A CN109620350A CN201811651893.0A CN201811651893A CN109620350A CN 109620350 A CN109620350 A CN 109620350A CN 201811651893 A CN201811651893 A CN 201811651893A CN 109620350 A CN109620350 A CN 109620350A
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 106
- 239000007788 liquid Substances 0.000 claims abstract description 87
- 238000007789 sealing Methods 0.000 claims abstract description 68
- 230000008602 contraction Effects 0.000 claims abstract description 16
- 210000004204 blood vessel Anatomy 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 2
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 230000017531 blood circulation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 230000004872 arterial blood pressure Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000013151 thrombectomy Methods 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 102000009123 Fibrin Human genes 0.000 description 1
- 108010073385 Fibrin Proteins 0.000 description 1
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 description 1
- 241000294142 Vascellum Species 0.000 description 1
- 206010047249 Venous thrombosis Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 210000001772 blood platelet Anatomy 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003462 vein Anatomy 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
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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
- A61B2017/22051—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 with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
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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
- A61B2017/22079—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 with suction of debris
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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
- A61B2017/22082—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 after introduction of a substance
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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)
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Abstract
The present invention relates to a kind of medical thrombus dredging structures, belong to medical instrument instrument field, form outer logical liquid channel including coaxially arranged inner sleeve and outer tube, between inner sleeve and outer tube and inner sleeve can and/or rotation flexible along the axis of outer tube；Puncturing head is equipped in the end of inner sleeve, the extended outer tube of puncturing head is outer and punctures thrombus, sliding sleeve and mesh grid are equipped in the rear side of puncturing head, it is outer and can sliding axially along inner sleeve that inner sleeve be set on sliding sleeve, the second sealing is equipped between sliding sleeve and outer tube, mesh grid is set between sliding sleeve and puncturing head；Hydraulic variation in the outer logical liquid channel of control can make sliding sleeve flexible along inner sleeve, and mesh grid is driven by sliding sleeve with radially expanding/shrinking along inner sleeve.Simplify structure, keep the lower size limit of this structure lower, in addition, the structure, can remove thrombus using flexible woven mesh structure, and by reciprocal extension and contraction control, effectively removing thrombus, improves thrombus elimination efficiency.
Description
Technical field
The present invention relates to a kind of medical thrombus dredging structures, belong to medical instrument instrument field, especially for medical hand
The field of tool for thrombus dredging of art.
Background technique
Thrombus is that blood flow on the surface of cardiovascular system blood vessel inner face exfoliation or mend is formed by fritter, by insoluble
Property fibrin, the blood platelet of deposition, the leucocyte of accumulation and the red blood cell fallen into form.Generally carrying out thrombus bypass operation is
It assists in technologies such as angiograph, anesthesia, is applied to lesion in Endovascular by operating doctor through cardinal vein blood vessel insertion conduit
A kind of medical technology of row operation.The blood supply of blood vessel is blocked to make using seal wire snare thrombus object using interim filling air bag
With negative-pressure ward lumen of vessels, seal wire is then exited, while pull in snare thrombus in conduit from intravascular, eliminates blood vessel at this time
Air bag is filled, conduit is then exited.Although can extend into intravascular, the treatment minimally invasive hand of phlebothrombosis with some in the prior art
The tool of art, but most of tools are all using the mode of mechanical stripping now, fragment after removing can with blood flow,
It is external without excluding, the probability increase that thrombus occurs again is in turn resulted in, further, since the intravascular position for being easy to happen blocking
Often thinner angiosomes are set, existing resecting tool is since the content for needing to operate is more, and causing it, the device is complicated, cost
Height causes volume larger since the structure for needing to control executing agency is more, is unfavorable for carrying out thrombus removing in thin blood vessel.
Summary of the invention
It is an object of the present invention to solve the above problems, the present invention is devised, for thrombectomy device in the prior art
Deficiency simplifies structure, keeps the lower size limit of this structure lower, in addition, the structure, can be removed using flexible woven mesh structure
Thrombus, and by reciprocal extension and contraction control, effectively removing thrombus, improve thrombus elimination efficiency.
The technical solution adopted by the present invention to solve the technical problems is:
The present invention discloses a kind of medical thrombus dredging structure, including coaxially arranged inner sleeve and outer tube, inner sleeve and housing
Outer logical liquid channel is formed between pipe and inner sleeve can and/or rotation flexible along the axis of outer tube；It is equipped in the end of inner sleeve
Puncturing head, the extended outer tube of puncturing head is outer and punctures thrombus, is equipped with sliding sleeve and mesh grid in the rear side of puncturing head, covers on sliding sleeve
Be located at inner sleeve it is outer and can sliding axially along inner sleeve, the second sealing is equipped between sliding sleeve and outer tube, mesh grid is set
Between sliding sleeve and puncturing head；Hydraulic variation in the outer logical liquid channel of control can make sliding sleeve flexible along inner sleeve, and mesh grid is by sliding
Set drives with radially expanding/shrinking along inner sleeve.
The structure cooperates sliding sleeve, can be realized the extension and contraction control of mesh grid only with the structure of internal and external casing, structure letter
It is single, the design structure of thrombus dredge is simplified, realizes the miniaturization of the structure, can reduce the lower size limit of the structure, from
And be conducive to carry out thrombus removing in smaller size of blood vessel.In addition, using mesh grid in radial expansion process in the structure
In mesh can be made to increase, so as to be embedded into thrombus, thrombus is convenient to be crushed, to dredge thrombus.
Further, second sealing is fixed on the lateral wall of sliding sleeve and cooperates sealing to the inner sidewall of outer tube.
Second sealing is mobile with sliding sleeve, so that the sealing at sliding sleeve be avoided to be detached from the influence to mesh grid extension and contraction control.
Further, the first sealing that cooperation can be sealed with the inner sidewall of outer tube is equipped on puncturing head；In inner sleeve
With interior logical liquid channel, the inner sleeve tube wall of mesh grid overlay area is equipped with several flushing holes；On the inner sidewall of outer tube
Equipped with groove, when the second sealing is placed in the groove, interior logical liquid channel is connected to outer logical liquid channel.Pass through setting in the structure
Inside and outside two channels, cooperation flushing hole can effectively rinse the thrombus being adhered in mesh grid, to keep mesh grid anti-
It is multiple to utilize and be crushed thrombus.Improve the clear effect of thrombus.
Further, it is equipped with flexible seal cover in the outside of outer bushing head, outer tube is equipped with lock tamponade, lock tamponade middle part
With pressure control hole, when the pressure difference of lock tamponade two sides reaches setting value, pressure control hole, which is opened, keeps flexible seal cover interior interior with outer tube
Side connection.The flexible of flexible seal cover can not only be controlled using logical liquid channel, while broken thrombus can also be extracted out, it is real
The diversification application of existing same structure, and then simplify the design structure of thrombus dredge.By way of blocking blood vessel, blood is avoided
The thrombus being crushed in pipe reenters blood circulation, reduces the probability that broken thrombus blocks blood vessel again.
Further, it is fixed with support frame on the outer tube lateral wall on the inside of flexible seal cover, support frame is far from outer tube
The side of lateral wall is connect with flexible seal cover.The two sides of the support frame are separately connected outer tube and flexible seal cover, to have
The expanded size of the limitation flexible seal cover of effect.Flexible seal cover is avoided to expand the excessive damage to blood vessel.
Further, support frame as described above includes several chapelet framves, and several chapelet framves are distributed in the surrounding of housing tube head
And it can be along the radial expansion of outer tube.Using the structure of several chapelet framves, makes flexible seal cover expansion more uniformly, avoid soft
Property seal closure causes the poorly sealed close problem of blood vessel due to uneven thickness in production process.
Further, respectively support subrack is respectively provided with four armed levers, and four armed levers form parallelogram structure, alternate arm
It is hinged between bar.Due to supporting subrack parallelogram structure in the structure, flexible seal cover and blood vessel are effectively increased
The area of contact, the damage for avoiding local pressure excessive to blood vessel side wall.
Further, there is the booster cavity being connected to interior logical liquid channel in puncturing head, booster cavity is communicated to the first sealing
Inside, be additionally provided with supporting network on the inside of the first sealing, the first sealing can be radially expanded in logical liquid channel when boosting inside,
The first sealing radial contraction is limited when supporting network in logical liquid channel inside for being depressured.In the structure, using booster cavity, effectively
When leading to boosting in liquid channel inside, its sealing effect is increased.
Further, the purging method of the mesh grid of the medical thrombus dredging structure, comprising the following steps:
Step 1: control inner sleeve makes that mesh grid is protruded into the middle part of thrombus and the second sealing does not surpass along the axially extended of outer tube
Outer tube out；
Step 2: the pressure in the outer logical liquid channel of control is back and forth gone up and down, so that sliding sleeve moves back and forth, and then yearns for mesh grid diameter
Multiple flexible, thrombus is crushed and is doped into mesh grid；
Step 3: liquid is discharged in logical liquid channel in control, and controls outer logical liquid channel and suck liquid；Liquid is discharged in interior logical liquid channel
Speed it is identical as the outer logical liquid channel sucking speed of liquid, to rinse mesh grid.
In this method, since mesh grid can be rinsed, so that mesh grid is avoided to block the influence dredged to thrombus, in addition,
This method can enable the duplicate removing thrombus of mesh grid, improve the cleaning amount of thrombus.
Further, the application method of the medical thrombus dredging structure, comprising the following steps:
Step 1: before outer tube protrudes into blood vessel, making flexible seal cover radial contraction；Flexible seal cover is locked as shrinking by lock tamponade
State；At this point, the diameter of flexible seal cover is the 1/2-2/3 of blood vessel diameter to be unclogged；Outer tube is protruded into intravascular and is extended to
At thrombus；It generally extends on front side of thrombus at 2-5mm.
Step 2: the mobile two sides for making the first sealing and the second sealing be located at lock tamponade of control inner sleeve, control
Hydraulic rising in interior logical liquid channel, when the pressure difference for locking tamponade two sides reaches setting value, pressure control hole is opened, flexible seal cover diameter
It is to opening and in sealing contact with the inner sidewall of blood vessel；The lock hydraulic fluid pressure for locking tamponade is 5kpa, when the pressure in interior logical liquid channel is greater than
When the sum of 5kpa and artery blood pressure, pressure control hole, which opens and makes to be filled with liquid in seal closure, to be radially expanded and seal blood vessels；
Step 3: control inner sleeve makes that mesh grid is protruded into the middle part of thrombus and the second sealing does not surpass along the axially extended of outer tube
Outer tube out；
Step 4: the pressure in the outer logical liquid channel of control is back and forth gone up and down, so that sliding sleeve moves back and forth, and then yearns for mesh grid diameter
It is multiple to stretch and adhere to thrombus；Pressure in outer logical liquid channel is back and forth gone up and down within the scope of vascular pressure ± 3kpa.
Step 5: control inner sleeve is taken in along the axial direction of outer tube, make the first both seals between internal and external casing, the
Two sealings reach groove, and interior logical liquid channel is connected to by flushing hole and mesh grid with outer logical liquid channel, control inside and outside logical liquid
Liquid between channel is flowed to rinse the thrombus being adhered in mesh grid；
Step 6: step 3-5 is repeated, until endovascular thrombus is dredged；
Step 7: controlling inner sleeve again along the axial stretching of outer tube, the first sealing and the second sealing is made to be located at lock
The two sides of tamponade control the hydraulic decline in interior logical liquid channel, when the pressure difference for locking tamponade two sides reaches setting value, pressure control hole
It opens, flexible seal cover radially collapses, then by internal and external casing along Vessel extraction.
Intravascular Thrombus is cleared up using above method, blood vessel can not only be blocked, blood flow is avoided to make to be crushed
Thrombus afterwards, which is pulled away, reduces the secondary probability for blocking other blood vessels of broken thrombus, additionally it is possible to by the mesh grid of reciprocating motion,
Thrombus is removed, additionally it is possible to effectively rinse mesh grid using the design in inside and outside logical liquid channel.
The invention has the benefit that
1, the present apparatus simplifies structure, keeps the lower size limit of this structure lower for the deficiency of thrombectomy device in the prior art, this
Outside, the structure can remove thrombus using flexible woven mesh structure, and by reciprocal extension and contraction control, effectively remove thrombus,
Improve thrombus elimination efficiency；
2, only with the structure of internal and external casing, cooperate sliding sleeve, can be realized the extension and contraction control of mesh grid, the structure is simple, simplifies
The design structure of thrombus dredge, realizes the miniaturization of the structure, can reduce the lower size limit of the structure, to be conducive to
Thrombus removing is carried out in smaller size of blood vessel.In addition, can be made in radial expansion process in the structure using mesh grid
Mesh increases, and so as to be embedded into thrombus, thrombus is convenient to be crushed, to dredge thrombus.
Detailed description of the invention
Fig. 1 is the original state figure of thrombus dredge；
Fig. 2 is the flexible seal cover open configuration figure of thrombus dredge；
Fig. 3 is the flushing state diagram of thrombus dredge；
State diagram when Fig. 4 is the dredging vascellum of thrombus dredge.
Appended drawing reference: 1- flexible seal cover, 2- support frame, 3- lock tamponade, 4- outer tube, 5- groove, 6- inner sleeve, 7- the
Two sealings, logical liquid channel outside 8-, 9- sliding sleeve lead to liquid channel in 10-, 11- mesh grid, 12- flushing hole, the first sealing of 13-,
14- puncturing head.
Specific embodiment
Embodiment 1
As shown in the picture, the present invention discloses a kind of medical thrombus dredging structure, including coaxially arranged inner sleeve 6 and outer tube 4,
Outer logical liquid channel 8 is formed between inner sleeve 6 and outer tube 4 and inner sleeve 6 can and/or rotation flexible along the axis of outer tube 4；?
The end of inner sleeve 6 is equipped with puncturing head 14, and the extended outer tube 4 of puncturing head 14 is outer and punctures thrombus, in the rear side of puncturing head 14
Equipped with sliding sleeve 9 and mesh grid 11, be set on sliding sleeve 9 inner sleeve 6 it is outer and can sliding axially along inner sleeve 6, in sliding sleeve 9 and outer
The second sealing 7 is equipped between casing 4, mesh grid 11 is set between sliding sleeve 9 and puncturing head 14；In the outer logical liquid channel 8 of control
Hydraulic variation can make sliding sleeve 9 flexible along inner sleeve 6, and mesh grid 11 is driven by sliding sleeve 9 with radially expanding/shrinking along inner sleeve 6.
Second sealing 7 is fixed on the lateral wall of sliding sleeve 9 and cooperates sealing to the inner sidewall of outer tube 4.Second sealing
Portion 7 is mobile with sliding sleeve 9, so that the sealing at sliding sleeve 9 be avoided to be detached from the influence to 11 extension and contraction control of mesh grid.
Only with the structure of internal and external casing, cooperating sliding sleeve 9, can be realized the extension and contraction control of mesh grid 11, the structure is simple,
The design structure for simplifying thrombus dredge realizes the miniaturization of the structure, can reduce the lower size limit of the structure, to have
Conducive to the progress thrombus removing in smaller size of blood vessel.In addition, in the structure using mesh grid 11 in radial expansion process
Mesh can be made to increase, so as to be embedded into thrombus, thrombus is convenient to be crushed, to dredge thrombus.
Embodiment 2
On the basis of embodiment 1, increasing more multi-part makes the present apparatus have the function of rinsing establishment net.
The first sealing 13 that cooperation can be sealed with the inner sidewall of outer tube 4 is equipped on puncturing head 14；Have in inner sleeve 6
There is interior logical liquid channel 10,6 tube wall of inner sleeve of 11 overlay area of mesh grid is equipped with several flushing holes 12；In outer tube 4
Side wall is equipped with groove 5, and when the second sealing 7 is placed in the groove 5, interior logical liquid channel 10 is connected to outer logical liquid channel 8.The knot
By the way that inside and outside two channels are arranged in structure, cooperation flushing hole 12 can effectively rinse the thrombus being adhered in mesh grid 11, from
And so that mesh grid 11 is recycled and be crushed thrombus.Improve the clear effect of thrombus.
In addition, being equipped with flexible seal cover 1 in the outside on 4 head of outer tube, outer tube 4 is equipped with lock tamponade 3, locks tamponade 3
Middle part has pressure control hole, and when the pressure difference of lock 3 two sides of tamponade reaches setting value, pressure control hole, which is opened, keeps flexible seal cover 1 interior and housing
The inside of pipe 4 is connected to.It is fixed with support frame 2 on 4 lateral wall of outer tube of 1 inside of flexible seal cover, support frame 2 is far from housing
The side of 4 lateral wall of pipe is connect with flexible seal cover 1.The two sides of the support frame 2 are separately connected outer tube 4 and flexible seal cover 1,
To effectively limit the expanded size of flexible seal cover 1.Support frame 2 includes several chapelet framves, and several chapelet framves are uniformly distributed
In 4 head of outer tube surrounding and can be along the radial expansion of outer tube 4.Each support subrack is respectively provided with four armed levers, four arms
Bar forms parallelogram structure, is hinged between adjacent armed lever.
In the above structure, the flexible of flexible seal cover 1 can not only be controlled using logical liquid channel, while can also extract out broken
Thrombus after broken, realizes the diversification application of same structure, and then simplifies the design structure of thrombus dredge.By blocking blood vessel
Mode, avoid in blood vessel be crushed thrombus reenter blood circulation, reduce broken thrombus and block the general of blood vessel again
Rate.Flexible seal cover 1 is avoided to expand the excessive damage to blood vessel.Using the structure of several chapelet framves, keep flexible seal cover 1 swollen
It is swollen more uniform, it avoids flexible seal cover 1 due to uneven thickness in production process, causes the poorly sealed close problem of blood vessel.
Embodiment 3
On the basis of embodiment 2, in order to increase the sealing effect for increasing the first sealing 13.
There is the booster cavity being connected to interior logical liquid channel 10 in puncturing head 14, booster cavity is communicated to the first sealing 13
Inside, the inside of the first sealing 13 are additionally provided with supporting network, and the first sealing 13 can lead to radial when boosting in liquid channel 10 inside
Expansion, supporting network is for limiting 13 radial contraction of the first sealing when decompression in logical liquid channel 10 inside.In the structure, increasing is utilized
Chamber is pressed to increase its sealing effect effectively inside in logical liquid channel 10 when boosting.
Embodiment 4
Based on the structure in embodiment 2, the purging method of the mesh grid 11 of the medical thrombus dredging structure, comprising the following steps:
Step 1: control inner sleeve 6 makes mesh grid 11 protrude into thrombus middle part and the second sealing along the axially extended of outer tube 4
7 without departing from outer tube 4；
Step 2: the pressure in the outer logical liquid channel 8 of control is back and forth gone up and down, so that sliding sleeve 9 moves back and forth, and then makes 11 diameter of mesh grid
To reciprocal telescopic, thrombus is crushed and is doped into mesh grid 11；
Step 3: liquid is discharged in logical liquid channel 10 in control, and controls outer logical liquid channel 8 and suck liquid；Interior logical liquid channel 10 is discharged
The speed of liquid is identical as the outer logical sucking speed of liquid of liquid channel 8, to rinse mesh grid 11.
Embodiment 5
Based on the structure in embodiment 2, the application method of the medical thrombus dredging structure, comprising the following steps:
Step 1: before outer tube 4 protrudes into blood vessel, making 1 radial contraction of flexible seal cover；Flexible seal cover 1 is locked as by lock tamponade 3
Contraction state；At this point, the diameter of flexible seal cover 1 is the 1/2-2/3 of blood vessel diameter to be unclogged；Then, outer tube 4 is protruded into blood
In pipe and extend at thrombus；It generally extends on front side of thrombus at 2-5mm；
Step 2: the mobile two sides for making the first sealing 13 and the second sealing 7 be located at lock tamponade 3 of control inner sleeve 6, control
Hydraulic rising in system in logical liquid channel 10, when the pressure difference for locking 3 two sides of tamponade reaches setting value, pressure control hole is opened, flexible close
Sealing cover 1 radially expands and in sealing contact with the inner sidewall of blood vessel；The lock hydraulic fluid pressure for locking tamponade 3 is 5kpa, when interior logical liquid channel 10
Pressure be greater than the sum of 5kpa and artery blood pressure when, pressure control hole open and make to radially expand simultaneously seal blood vessels；
Step 3: control inner sleeve 6 makes mesh grid 11 protrude into thrombus middle part and the second sealing along the axially extended of outer tube 4
7 without departing from outer tube 4；
Step 4: the pressure in the outer logical liquid channel 8 of control is back and forth gone up and down, so that sliding sleeve 9 moves back and forth, and then makes 11 diameter of mesh grid
To reciprocal telescopic and adhere to thrombus；Pressure in outer logical liquid channel 8 is back and forth gone up and down within the scope of vascular pressure ± 3kpa.
Step 5: control inner sleeve 6 along outer tube 4 axial direction income, make the first sealing 13 sealing to internal and external casing it
Between, the second sealing 7 reach at groove 5, interior logical liquid channel 10 connects by flushing hole 12 and mesh grid 11 and outer logical liquid channel 8
Logical, the liquid controlled between inside and outside logical liquid channel is flowed to rinse the thrombus being adhered in mesh grid 11；
Step 6: step 3-5 is repeated, until endovascular thrombus is dredged；
Step 7: controlling inner sleeve 6 again along the axial stretching of outer tube 4, distinguish the first sealing 13 and the second sealing 7
Positioned at the two sides of lock tamponade 3, the hydraulic decline in interior logical liquid channel 10 is controlled, when the pressure difference of lock 3 two sides of tamponade reaches setting value
When, pressure control hole is opened, and flexible seal cover 1 is radial to be collapsed, then by internal and external casing along Vessel extraction.
This method clears up Intravascular Thrombus, can not only block blood vessel, and blood flow is avoided to make broken blood
Bolt, which is pulled away, reduces the secondary probability for blocking other blood vessels of broken thrombus, additionally it is possible to by the mesh grid 11 of reciprocating motion, to blood
Bolt is removed, additionally it is possible to using the design in inside and outside logical liquid channel, it is effective to rinse mesh grid 11.
Above-described embodiment does not limit the embodiments just for the sake of clearly illustrating done citing.For
For those skilled in the art, other different forms of changes or modifications may be made based on the above description.
There is no necessity and possibility to exhaust all the enbodiments.And obvious changes or variations extended from this are still
In protection scope of the present invention.
Claims (10)
1. a kind of medical thrombus dredging structure, which is characterized in that including coaxially arranged inner sleeve (6) and outer tube (4), inner sleeve
Manage outer logical liquid channel (8) are formed between (6) and outer tube (4) and inner sleeve (6) can stretch along the axis of outer tube (4) and/or
Rotation；Puncturing head (14) are equipped in the end of inner sleeve (6), puncturing head (14) extended outer tube (4) outside and punctures thrombus,
The rear side of puncturing head (14) is equipped with sliding sleeve (9) and mesh grid (11), is set in inner sleeve (6) outside on sliding sleeve (9) and can be along inner sleeve
Pipe (6) slides axially, and is equipped with the second sealing (7) between sliding sleeve (9) and outer tube (4), and mesh grid (11) is set to sliding sleeve
(9) between puncturing head (14)；Hydraulic variation in control outer logical liquid channel (8) can make sliding sleeve (9) flexible along inner sleeve (6),
Mesh grid (11) is driven by sliding sleeve (9) with radially expanding/shrinking along inner sleeve (6).
2. medical thrombus dredging structure as described in claim 1, which is characterized in that second sealing (7) is fixed on cunning
It covers on the lateral wall of (9) and cooperates sealing to the inner sidewall of outer tube (4).
3. medical thrombus dredging structure as described in claim 1, which is characterized in that being equipped on puncturing head (14) can be with housing
Manage the first sealing (13) of the inner sidewall sealing cooperation of (4)；There is interior logical liquid channel (10), mesh grid in inner sleeve (6)
(11) inner sleeve (6) tube wall of overlay area is equipped with several flushing holes (12)；Groove is equipped on the inner sidewall of outer tube (4)
(5), the second sealing (7) be placed in the groove (5) it is interior when, interior logical liquid channel (10) is connected to outer logical liquid channel (8).
4. medical thrombus dredging structure as claimed in claim 3, which is characterized in that be equipped in the outside on outer tube (4) head
Flexible seal cover (1), outer tube (4) are equipped with lock tamponade (3), have pressure control hole in the middle part of lock tamponade (3), lock tamponade (3) two sides
Pressure difference when reaching setting value, pressure control hole, which is opened, to be made to be connected in flexible seal cover (1) with the inside of outer tube (4).
5. medical thrombus dredging structure as claimed in claim 4, which is characterized in that the housing on the inside of flexible seal cover (1)
It is fixed with support frame (2) on pipe (4) lateral wall, side and flexible seal cover of the support frame (2) far from outer tube (4) lateral wall
(1) it connects.
6. medical thrombus dredging structure as claimed in claim 5, which is characterized in that support frame as described above (2) includes several supports
Subrack, several chapelet framves are distributed in the surrounding on outer tube (4) head and can be along the radial expansions of outer tube (4).
7. medical thrombus dredging structure as claimed in claim 6, which is characterized in that each support subrack is respectively provided with four arms
Bar, four armed levers form parallelogram structure, are hinged between adjacent armed lever.
8. medical thrombus dredging structure as claimed in claim 7, which is characterized in that have and interior logical liquid in puncturing head (14)
The booster cavity of channel (10) connection, booster cavity are communicated to the inside of the first sealing (13), and the inside of the first sealing (13) is also
Equipped with supporting network, the first sealing (13) is radially expanded when can lead to boosting in liquid channel (10) inside, and supporting network for leading to inside
The first sealing (13) radial contraction is limited when decompression in liquid channel (10).
9. the thrombus dredging method of the mesh grid of medical thrombus dredging structure as claimed in claim 8, which is characterized in that including
Following steps:
Step 1: control inner sleeve (6) makes mesh grid (11) protrude into thrombus middle part and second along the axially extended of outer tube (4)
Sealing (7) is without departing from outer tube (4)；
Step 2: the pressure in control outer logical liquid channel (8) is back and forth gone up and down, so that sliding sleeve (9) moves back and forth, and then makes mesh grid
(11) radial reciprocal telescopic, thrombus are crushed and are doped on mesh grid (11)；
Step 3: liquid is discharged in logical liquid channel (10) in control, and controls outer logical liquid channel (8) and suck liquid；Interior logical liquid channel
(10) speed that liquid is discharged is identical as outer logical liquid channel (8) the sucking speed of liquid, to rinse mesh grid (11).
10. the application method of medical thrombus dredging structure as claimed in claim 8, which comprises the following steps:
Step 1: before outer tube (4) protrudes into blood vessel, making flexible seal cover (1) radial contraction；Tamponade (3) are locked by flexible seal cover
(1) it is locked as contraction state；Then, outer tube (4) is protruded into intravascular and extended at thrombus；
Step 2: control inner sleeve (6) is mobile to make the first sealing (13) and the second sealing (7) be located at lock tamponade (3)
Two sides control the hydraulic rising in interior logical liquid channel (10), when the pressure difference for locking tamponade (3) two sides reaches setting value, pressure control hole
It opens, flexible seal cover (1) radially expands and in sealing contact with the inner sidewall of blood vessel；
Step 3: control inner sleeve (6) makes mesh grid (11) protrude into thrombus middle part and second along the axially extended of outer tube (4)
Sealing (7) is without departing from outer tube (4)；
Step 4: the pressure in control outer logical liquid channel (8) is back and forth gone up and down, so that sliding sleeve (9) moves back and forth, and then makes mesh grid
(11) radial reciprocal telescopic and thrombus is adhered to；
Step 5: control inner sleeve (6) along outer tube (4) axial direction income, make the first sealing (13) sealing to internal and external casing it
Between, the second sealing (7) reach at groove (5), interior logical liquid channel (10) is by flushing hole (12) and mesh grid (11) and outer leads to
Liquid channel (8) connection, the liquid controlled between inside and outside logical liquid channel are flowed to rinse the thrombus being adhered on mesh grid (11)；
Step 6: step 3-5 is repeated, until endovascular thrombus is dredged；
Step 7: controlling inner sleeve (6) again along the axial stretching of outer tube (4), make the first sealing (13) and the second sealing
(7) two sides of lock tamponade (3) are located at, the hydraulic decline in interior logical liquid channel (10) are controlled, when the pressure of lock tamponade (3) two sides
When difference reaches setting value, pressure control hole is opened, and flexible seal cover (1) radially collapses, then by internal and external casing along Vessel extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651893.0A CN109620350A (en) | 2018-12-31 | 2018-12-31 | A kind of medical thrombus dredging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651893.0A CN109620350A (en) | 2018-12-31 | 2018-12-31 | A kind of medical thrombus dredging structure |
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| CN109620350A true CN109620350A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811651893.0A Pending CN109620350A (en) | 2018-12-31 | 2018-12-31 | A kind of medical thrombus dredging structure |
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