CN109620351A - A kind of thrombus dredge for medical operating - Google Patents
A kind of thrombus dredge for medical operating Download PDFInfo
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- CN109620351A CN109620351A CN201811651894.5A CN201811651894A CN109620351A CN 109620351 A CN109620351 A CN 109620351A CN 201811651894 A CN201811651894 A CN 201811651894A CN 109620351 A CN109620351 A CN 109620351A
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 98
- 239000007788 liquid Substances 0.000 claims abstract description 102
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 32
- 230000008602 contraction Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 17
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 241000294142 Vascellum Species 0.000 description 5
- 239000008280 blood Substances 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 4
- 230000006837 decompression Effects 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 208000029078 coronary artery disease Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010008088 Cerebral artery embolism 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
- 206010047249 Venous thrombosis Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 210000001772 blood platelet Anatomy 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 206010008118 cerebral infarction Diseases 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 201000010849 intracranial embolism Diseases 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000013151 thrombectomy Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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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
-
- 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)
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- Animal Behavior & Ethology (AREA)
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Abstract
The present invention relates to a kind of thrombus dredges for medical operating, belong to medical instrument instrument field, especially for the field of tool for thrombus dredging of medical operating.The thrombus dredge includes housing inner casing tube and logical liquid channel, and inner sleeve is coaxially arranged in outer tube and can be along its axial stretching and inner sleeve can be stretched out from housing tube head to puncture thrombus；It is equipped with flexible seal cover and support frame in the outside of outer bushing head, support frame is located in flexible seal cover and struts flexible seal cover for radial；The first sealing is equipped between internal and external casing, outer tube is equipped with the pressure control hole of connection flexible seal cover；Logical liquid channel is for siphoning away thrombus, and the logical liquid channel can adjust the pressure in flexible seal cover so that flexible seal cover radial contraction by pressure control hole.Aiming at the shortcomings in the prior art, simplify structure, the lower size limit for enabling this structure to design is lower, can take broken thrombus away, reduces the probability that broken thrombus blocks blood vessel again.
Description
Technical field
The present invention relates to a kind of thrombus dredges for medical operating, belong to medical instrument instrument field, especially needle
To the field of tool for thrombus dredging of medical operating.
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.The fearful place of thrombus can exactly be led
Cause local stoppages, so as to cause organ ischemia, anoxic and failure.Thrombus can appear in the artery at any position of human body.Such as
Appearing in cerebrovascular crotch will result in cerebral infarction or cerebral embolism, and may can cause coronary disease present in coronary artery
Disease.These diseases are possible to cause to die suddenly.The general thrombus bypass operation that carries out is auxiliary in technologies such as angiograph, anesthesia
It helps, by operating doctor through cardinal vein blood vessel insertion conduit to lesion, in a kind of medical technology that Endovascular is performed a surgical operation.It utilizes
Interim filling air bag blocks the blood supply of blood vessel, is then exited using seal wire snare thrombus object using negative-pressure ward lumen of vessels
Seal wire, while pull in snare thrombus in conduit from intravascular, blood vessel is eliminated at this time and fills air bag, then exits conduit.
Although can extend into intravascular, the tool for the treatment of phlebothrombosis Minimally Invasive Surgery with some in the prior art, at that time
For present most of tools all using the mode of mechanical stripping, the fragment after removing can be with blood flow, without excluding body
Outside, the probability increase that thrombus occurs again is in turn resulted in, further, since the intravascular position for being easy to happen blocking is often relatively thin
Angiosomes, existing resecting tool is more due to needing the content that operates, and causing it, the device is complicated, at high cost, due to needing
The structure for controlling executing agency is more, causes volume larger, 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, and the lower size limit for enabling this structure to design is lower, by way of blocking blood vessel, avoids breaking in blood vessel
Broken thrombus reenters blood circulation, reduces the probability that broken thrombus blocks blood vessel again.
The technical solution adopted by the present invention to solve the technical problems is:
The present invention discloses a kind of thrombus dredge for medical operating, including housing inner casing tube and logical liquid channel, inner sleeve
It is coaxially arranged in outer tube and can be along its axial stretching and inner sleeve can be stretched out from housing tube head to puncture thrombus；In housing
The outside of tube head is equipped with flexible seal cover and support frame, and support frame is located in flexible seal cover and struts for radial direction flexible close
Sealing cover；The first sealing is equipped between internal and external casing, outer tube is equipped with the pressure control hole of connection flexible seal cover；It uses in logical liquid channel
In siphoning away thrombus, and the pressure in flexible seal cover can be adjusted by pressure control hole for the logical liquid channel so that flexible seal cover is radially received
Contracting.
In the design, structure is simple, and the flexible of flexible seal cover can not only be controlled by efficiently using logical liquid channel, simultaneously also
Broken thrombus can be extracted out, realize the diversification application of same structure, and then simplify the design structure of thrombus dredge, it is real
The now miniaturization of the structure, can reduce the lower size limit of the structure, to be conducive to carry out blood in smaller size of blood vessel
Bolt is removed.In addition, the structure utilizes the design of support frame, flexible seal cover can be made normally to strut under normal pressure, and negative pressure is made
With lower contraction.It is convenient to the sealing of 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.The two sides of the support frame are separately connected outer tube and flexible seal cover, to effectively limit
The expanded size of flexible seal cover processed.Flexible seal cover is avoided to expand the excessive damage to blood vessel.
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；Torsion spring is arranged in wherein at least one hinged place, and torsion spring is for pushing support subrack along housing
Caliber is to stretching out.Due to supporting subrack parallelogram structure in the structure, flexible seal cover and contacts blood are effectively increased
Area, the damage for avoiding local pressure excessive to blood vessel side wall.
Further, the mesh grid of sliding sleeve and tubulose is cased on the head of inner sleeve, front end and the inner sleeve of mesh grid are fixed
Connection, rear end connect sliding sleeve, and sliding sleeve is equipped with the second sealing, adjust the pressure controllable sliding sleeve in logical liquid channel along inner sleeve
Axial movement so that mesh grid radial expansion.The structure can be such that mesh increases using mesh grid in radial expansion process,
So as to be embedded into thrombus, it is convenient to thrombus to be crushed, to dredge thrombus.
Further, leading to liquid channel includes outer logical liquid channel and Nei Tong liquid channel, and the outer logical liquid channel is located at internal and external casing
Between, the interior logical liquid channel is located in inner sleeve, and flushing hole is equipped on the inner sleeve on the inside of mesh grid；Flushing hole is led to interior
Liquid channel is connected to and is used to rinse mesh grid；The pressure controllable sliding sleeve in outer logical liquid channel is adjusted along the axial movement of inner sleeve
So that mesh grid radial expansion.By the way that inside and outside two channels are arranged in the structure, part-blood can be siphoned away using interior logical liquid channel
Bolt fragment, additionally it is possible to mesh grid be controlled using outer logical liquid channel, improve the clear effect of thrombus.
Further, it is additionally provided with puncturing head on the head of inner sleeve, puncturing head is equipped with the first sealing, on the inside of outer tube
Equipped with groove；When second sealing is placed in groove, the first both seals are between internal and external casing；It is logical to adjust inside and outside logical liquid
The flushable mesh grid of the pressure in road.The design that groove is utilized in the structure, makes to be connected between internal and external channel, thus in effective use
Water flow between outer logical liquid channel rinses mesh grid, realizes the reciprocal utilization of mesh grid, can be improved the continuity of thrombus removing,
Avoid influence of the adhesion thrombus fragment to its dredging vascellum process in mesh grid.
Further, the blood vessel encapsulating method of the above-mentioned thrombus dredge for medical operating, comprising the following steps:
Step 1: control inner sleeve makes both seals between internal and external casing and logical liquid channel is logical along the axial stretching of outer tube
Pressure control hole is crossed to be connected to the space in flexible seal cover；
Step 2: to being depressured in logical liquid channel, and collapsing flexible seal cover along the radial direction of outer tube；
Step 3: internal and external casing synchronizing moving reaches the head of outer tube at endovascular thrombus；
Step 4: to boosting in logical liquid channel, support frame pushes flexible seal cover to radially expand and be bonded the inside of blood vessel
Wall makes flexible seal cover seal blood vessels.
It by the pressure relative to atmospheric pressure in logical liquid channel is first generally -0.5kpa, flexibility is close in above step 2
Outer diameter after sealing cover radial direction gathering is generally the 1/2-2/3 of blood vessel to be unclogged, and internal and external casing rear end is generally connected with flexible pipe, will
It extend on front side of thrombus at 2-3mm, then stretches out the inner sleeve to be crushed thrombus.
Further, the method for the mesh grid dredging vascellum of the above-mentioned thrombus dredge for medical operating, including following step
It is rapid:
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 and broken thrombus；
Step 3: controlling inner sleeve again along the axially extended of outer tube, stretch out the second sealing outside outer tube, reduce logical liquid
The thrombus that pressure and suction in channel are crushed.
In this method, it is flexible or be sucked out broken the control mesh grid of logical liquid channel can be utilized respectively two different stages
Broken thrombus, and then the compatibility of unified structure is improved, under the premise of guaranteeing thrombus cleaning function, effectively simplify structure.
Further, the purging method of the mesh grid of the above-mentioned thrombus dredge for medical operating, 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 above-mentioned thrombus dredge for medical operating, comprising the following steps:
Step 1: control inner sleeve makes the first both seals between internal and external casing along the axial stretching of outer tube, and makes interior
Logical liquid channel and/or outside logical liquid channel pass through pressure control hole and are connected to the space in flexible seal cover；
Step 2: control flexible seal cover in decompression make along outer tube radial direction collapse, internal and external casing is synchronized go deep into it is intravascular simultaneously
It extends at thrombus；
Step 3: boosting in control flexible seal cover, support frame push flexible seal cover to radially expand and be bonded the inner sidewall of blood vessel
Seal blood vessel at this；
Step 4: 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 5: 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；
Step 6: control inner sleeve is taken in along the axial direction of outer tube, make the first both seals between internal and external casing, it is second close
Envelope portion reaches groove, is connected to interior logical liquid channel with outer logical liquid channel by flushing hole and mesh grid, and it is logical to control inside and outside logical liquid
Liquid between road is flowed to rinse the thrombus being adhered in mesh grid；.
Step 7: step 4-6 is repeated, until endovascular thrombus is dredged；
Step 8: controlling inner sleeve again along the axial stretching of outer tube, make the first both seals between internal and external casing, together
When interior logical liquid channel and/or logical liquid channel is connected to by pressure control hole with the space in flexible seal cover outside；
Step 9: the interior decompression of control flexible seal cover, flexible seal cover radially collapse, by internal and external casing along the synchronous extraction of blood vessel.
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, present apparatus structure is simple, and the flexible of flexible seal cover can not only be controlled by efficiently using logical liquid channel, while can also
It extracts broken thrombus out, realizes the diversification application of same structure, and then simplify the design structure of thrombus dredge, realizing should
The miniaturization of structure, can reduce the lower size limit of the structure, so that it is clear to be conducive to the progress thrombus in smaller size of blood vessel
It removes；
2, the area of flexible seal cover and contacts blood is effectively increased due to support frame parallelogram structure in the structure,
The damage for avoiding local pressure excessive to blood vessel side wall；
3, can make to be connected between internal and external channel in the structure, so that the water flow between the inside and outside logical liquid channel of effective use is rinsed and compiled
The reciprocal utilization of mesh grid is realized in knitmesh, be can be improved the continuity of thrombus removing, is avoided adhesion thrombus fragment pair in mesh grid
The influence of its dredging vascellum process.
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- pressure control hole, 4- outer tube, 5- groove, 6- inner sleeve, 7-
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 Figs 1-4, a kind of thrombus dredge for medical operating of the invention, including 4 inner sleeve 6 of outer tube and logical
Liquid channel, inner sleeve 6 are coaxially arranged in outer tube 4 and can be along its axial stretching and inner sleeve 6 can be stretched out from 4 head of outer tube
To puncture thrombus；It is equipped with flexible seal cover 1 and support frame 2 in the outside on 4 head of outer tube, support frame 2 is located at flexible seal cover 1
It is interior and for the radial flexible seal cover 1 that struts；The first sealing 13 is equipped between internal and external casing, it is soft that outer tube 4 is equipped with connection
The pressure control hole 3 of property seal closure 1；Logical liquid channel is for siphoning away thrombus, and the logical liquid channel can adjust flexible sealing by pressure control hole 3
Pressure in cover 1 is so that 1 radial contraction of flexible seal cover.
Support frame 2 includes several chapelet framves, and several chapelet framves are distributed in the surrounding on 4 head of outer tube and can be along housing
The radial expansion of pipe 4.Each support subrack is respectively provided with four armed levers, and four armed levers form parallelogram structure, alternate arm
It is hinged between bar；Torsion spring is arranged in wherein at least one hinged place, and torsion spring is for pushing support subrack along housing
Pipe 4 is radial to stretch out.
Embodiment 2
As shown in Figs 1-4, a kind of thrombus dredge for medical operating of the invention, including 4 inner sleeve 6 of outer tube and logical
Liquid channel, inner sleeve 6 are coaxially arranged in outer tube 4 and can be along its axial stretching and inner sleeve 6 can be stretched out from 4 head of outer tube
To puncture thrombus；It is equipped with flexible seal cover 1 and support frame 2 in the outside on 4 head of outer tube, support frame 2 is located at flexible seal cover 1
It is interior and for the radial flexible seal cover 1 that struts；The first sealing 13 is equipped between internal and external casing, it is soft that outer tube 4 is equipped with connection
The pressure control hole 3 of property seal closure 1；Logical liquid channel is for siphoning away thrombus, and the logical liquid channel can adjust flexible sealing by pressure control hole 3
Pressure in cover 1 is so that 1 radial contraction of flexible seal cover.
The mesh grid 11 of sliding sleeve 9 and tubulose, the front end of mesh grid and the fixed company of inner sleeve 6 are cased on the head of inner sleeve 6
It connects, rear end connection sliding sleeve 9, sliding sleeve 9 is equipped with the second sealing 7, adjusts the pressure controllable sliding sleeve 9 in logical liquid channel along inner sleeve
The axial movement of pipe 6 is so that mesh grid radial expansion.
Logical liquid channel includes outer logical liquid channel 8 and Nei Tong liquid channel 10, the outer logical liquid channel 8 be located at internal and external casing it
Between, the interior logical liquid channel 10 is located in inner sleeve 6, is equipped with flushing hole 12 on the inner sleeve 6 of 11 inside of mesh grid；Flushing hole
12 are connected to and for rinsing mesh grid with interior logical liquid channel 10；The pressure controllable sliding sleeve 9 in outer logical liquid channel 8 is adjusted along inner sleeve
The axial movement of pipe 6 is so that mesh grid radial expansion.
It is additionally provided with puncturing head 14 on the head of inner sleeve 6, puncturing head 14 is equipped with the first sealing 13, in outer tube 4
Side is equipped with groove 5；When second sealing 7 is placed in groove 5, the first sealing 13 is sealed between internal and external casing；In adjusting
The flushable mesh grid of pressure in outer logical liquid channel.
Embodiment 3
Based on the thrombus dredge structure in embodiment 1, blood vessel encapsulating method, comprising the following steps:
Step 1: control inner sleeve 6 makes both seals between internal and external casing and logical liquid channel along the axial stretching of outer tube 4
It is connected to by pressure control hole 3 with the space in flexible seal cover；
Step 2: to being depressured in logical liquid channel, and collapsing flexible seal cover along the radial direction of outer tube 4；
Step 3: internal and external casing synchronizing moving reaches the head of outer tube 4 at endovascular thrombus；
Step 4: to boosting in logical liquid channel, support frame 2 pushes flexible seal cover to radially expand and be bonded the inside of blood vessel
Wall makes flexible seal cover seal blood vessels.
Embodiment 4
Based on the thrombus dredge structure in embodiment 2, the method for mesh grid dredging vascellum, comprising the following steps:
Step 1: control inner sleeve 6 makes mesh grid protrude into thrombus middle part and the second sealing 7 along the axially extended of outer tube 4
Without departing from outer tube 4；
Step 2: the pressure in the outer logical liquid channel of control is back and forth gone up and down, so that sliding sleeve 9 moves back and forth, and then yearns for mesh grid diameter
Multiple flexible and broken thrombus；
Step 3: controlling inner sleeve 6 again along the axially extended of outer tube 4, stretch out the second sealing 7 outside outer tube 4, reduce
The thrombus that pressure and suction in logical liquid channel are crushed.
Embodiment 4
Based on the thrombus dredge structure in embodiment 2, the purging method of mesh grid, comprising the following steps:
Step 1: control inner sleeve 6 makes mesh grid protrude into thrombus middle part and the second sealing 7 along the axially extended of outer tube 4
Without departing from outer tube 4；
Step 2: the pressure in the outer logical liquid channel of control is back and forth gone up and down, so that sliding sleeve 9 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 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.
Embodiment 4
Based on the thrombus dredge structure in embodiment 2, application method, comprising the following steps:
Step 1: control inner sleeve 6 is sealed in the first sealing 13 between internal and external casing along the axial stretching of outer tube 4, and
Interior logical liquid channel 10 and/or outside logical liquid channel 8 pass through pressure control hole 3 and are connected to the space in flexible seal cover；
Step 2: control flexible seal cover in decompression make along outer tube 4 radial direction collapse, internal and external casing is synchronized go deep into it is intravascular
And it extends at thrombus；
Step 3: boosting in control flexible seal cover, support frame 2 push flexible seal cover to radially expand and be bonded the inside of blood vessel
Wall seals blood vessel at this；
Step 4: control inner sleeve 6 makes mesh grid protrude into thrombus middle part and the second sealing 7 along the axially extended of outer tube 4
Without departing from outer tube 4；
Step 5: the pressure in the outer logical liquid channel of control is back and forth gone up and down, so that sliding sleeve 9 moves back and forth, and then yearns for mesh grid diameter
It is multiple to stretch and adhere to thrombus；
Step 6: control inner sleeve 6 along the axial direction income of outer tube 4, make the sealing of the first sealing 13 between internal and external casing, the
Two sealings 7 reach at groove 5, are connected to interior logical liquid channel 10 with outer logical liquid channel 8 by flushing hole 12 and mesh grid 11, control
Liquid between the inside and outside logical liquid channel of system is flowed to rinse the thrombus being adhered in mesh grid；.
Step 7: step 4-6 is repeated, until endovascular thrombus is dredged；
Step 8: again control inner sleeve 6 along outer tube 4 axial stretching, make the first sealing 13 be sealed in internal and external casing it
Between, while interior logical liquid channel 10 and/or outer logical liquid channel 8 are connected to by pressure control hole 3 with the space in flexible seal cover；
Step 9: the interior decompression of control flexible seal cover, flexible seal cover radially collapse, by internal and external casing along the synchronous extraction of blood vessel.
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 (7)
1. a kind of thrombus dredge for medical operating, which is characterized in that logical including outer tube (4) inner sleeve (6) and logical liquid
Road, inner sleeve (6) are coaxially arranged in the outer tube (4) and can be along its axial stretching and inner sleeve (6) can be from outer tube (4) head
It stretches out to puncture thrombus；Flexible seal cover (1) and support frame (2), support frame (2) position are equipped in the outside on outer tube (4) head
Flexible seal cover (1) is strutted in flexible seal cover (1) and for radial；The first sealing, housing are equipped between internal and external casing
Manage the pressure control hole (3) that (4) are equipped with connection flexible seal cover (1)；Logical liquid channel is for siphoning away thrombus, and the logical liquid channel can lead to
The pressure in pressure control hole (3) adjusting flexible seal cover (1) is crossed so that flexible seal cover (1) radial contraction.
2. being used for the thrombus dredge of medical operating as described in claim 1, which is characterized in that support frame as described above (2) includes
Several chapelet framves, several chapelet framves are distributed in the surrounding on outer tube (4) head and can be along the radial expansions of outer tube (4).
3. being used for the thrombus dredge of medical operating as claimed in claim 2, which is characterized in that each support subrack is respectively provided with
Four armed levers, four armed levers form parallelogram structure, are hinged between adjacent armed lever；Wherein at least one hinged place
Arrange torsion spring, torsion spring is for pushing support subrack radially to stretch out along outer tube (4).
4. being used for the thrombus dredge of medical operating as described in claim 1, which is characterized in that on the head of inner sleeve (6)
It is cased with the mesh grid (11) of sliding sleeve (9) and tubulose, the front end of mesh grid is fixedly connected with inner sleeve (6), rear end connect sliding sleeve
(9), sliding sleeve (9) is equipped with the second sealing (7), adjusts the pressure controllable sliding sleeve (9) in logical liquid channel along inner sleeve (6)
Axial movement is so that mesh grid radial expansion.
5. being used for the thrombus dredge of medical operating as claimed in claim 4, which is characterized in that logical liquid channel includes outer logical liquid
Channel (8) and interior logical liquid channel (10), the outer logical liquid channel (8) is between internal and external casing, the interior logical liquid channel (10)
In inner sleeve (6), flushing hole (12) are equipped on the inner sleeve (6) on the inside of mesh grid (11)；Flushing hole (12) is led to interior
Liquid channel (10) is connected to and for rinsing mesh grid；The pressure controllable sliding sleeve (9) in outer logical liquid channel (8) is adjusted along inner sleeve
(6) axial movement is so that mesh grid radial expansion.
6. being used for the thrombus dredge of medical operating as claimed in claim 5, which is characterized in that on the head of inner sleeve (6)
It is additionally provided with puncturing head (14), puncturing head (14) is equipped with the first sealing (13), is equipped with groove (5) on the inside of outer tube (4)；The
Two sealings (7) be placed in groove (5) it is interior when, the first sealing (13) is sealed between internal and external casing；It is logical to adjust inside and outside logical liquid
The flushable mesh grid of the pressure in road.
7. the blood vessel encapsulating method of the thrombus dredge for medical operating as described in one of claim 1-3, feature exist
In, the following steps are included:
Step 1: control inner sleeve (6) makes both seals between internal and external casing and logical liquid along the axial stretching of outer tube (4)
Channel is connected to by pressure control hole (3) with the space in flexible seal cover；
Step 2: to being depressured in logical liquid channel, and collapsing flexible seal cover along the radial direction of outer tube (4)；
Step 3: internal and external casing synchronizing moving reaches the head of outer tube (4) at endovascular thrombus；
Step 4: to boosting in logical liquid channel, support frame (2) pushes flexible seal cover to radially expand and be bonded the interior of blood vessel
Side wall makes flexible seal cover seal blood vessels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651894.5A CN109620351A (en) | 2018-12-31 | 2018-12-31 | A kind of thrombus dredge for medical operating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651894.5A CN109620351A (en) | 2018-12-31 | 2018-12-31 | A kind of thrombus dredge for medical operating |
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| CN109620351A true CN109620351A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811651894.5A Pending CN109620351A (en) | 2018-12-31 | 2018-12-31 | A kind of thrombus dredge for medical operating |
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| CN113749731A (en) * | 2021-09-22 | 2021-12-07 | 四川省医学科学院·四川省人民医院 | Thrombus suction device for vascular surgery |
| CN113974775A (en) * | 2021-11-17 | 2022-01-28 | 上海腾复医疗科技有限公司 | Sheath sealing device and thrombus suction system comprising same |
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Application publication date: 20190416 |