CN112587202A - Thrombus aspiration catheter - Google Patents
Thrombus aspiration catheterDownload PDFInfo
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- CN112587202A CN112587202ACN202011444555.7ACN202011444555ACN112587202ACN 112587202 ACN112587202 ACN 112587202ACN 202011444555 ACN202011444555 ACN 202011444555ACN 112587202 ACN112587202 ACN 112587202A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22051—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22051—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
- A61B2017/22062—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation to be filled with liquid
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22051—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
- A61B2017/22065—Functions of balloons
- A61B2017/22067—Blocking; Occlusion
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22079—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with suction of debris
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Abstract
Translated fromChinese
Description
Technical Field
The invention relates to a thrombus aspiration catheter, and belongs to the technical field of medical instruments.
Background
Thrombi are small patches of blood flow that form on the surface of a denuded or repaired site within a blood vessel of the cardiovascular system. In variable flow dependent patterns, the thrombus is composed of insoluble fibrin, deposited platelets, accumulated leukocytes, and entrapped erythrocytes. If the thrombus forms blockage in the blood vessel of the human body, the blood flow is interrupted, and the diseases such as myocardial infarction, cerebral apoplexy and the like which can endanger life are easily caused.
At present, a clinically common artificial mechanical method for restoring the patency of blood vessels is thrombus aspiration. Thrombectomy is the main intervention of a human blood vessel with the aid of a thrombectomy catheter to remove the thrombus forming a blockage in the human blood vessel. The therapeutic rate of revascularization using thrombectomy is high, however, existing thrombectomy still has many drawbacks.
For example, the inflatable balloon used by the existing thrombus aspiration catheter has low elasticity, and can cause great damage to blood vessels after accidental rupture; the inflatable balloon used by the existing thrombus aspiration catheter has a small inflatable cavity and a single direction, and is easy to cause inflation difficulty due to extrusion; the friction force between an inflatable balloon used by the conventional thrombus aspiration catheter and a blood vessel wall is low, and the risk of no re-flowing after operation due to relative sliding of the inflatable balloon and the blood vessel wall is greatly increased; guide wires used by the conventional thrombus suction catheter are all oblique incision head ends, and although the oblique incision head ends are favorable for sucking large thrombus, the risk of cutting the blood vessel wall is greatly increased; the existing thrombus aspiration catheter has complex structure and inconvenient operation.
Therefore, the thrombus suction catheter which is not easy to damage the blood vessel, saves labor and is fast to inflate the balloon, is not easy to slide relative to the blood vessel wall, has a simple structure and is convenient to operate is urgently needed to overcome the defects of the existing thrombus suction catheter.
Disclosure of Invention
[ problem ] to
The invention aims to solve the technical problem of providing a thrombus suction catheter which is not easy to damage blood vessels, saves labor and is quick for inflating a saccule, is not easy to slide relative to the wall of the blood vessel, has a simple structure and is convenient to operate.
[ solution ]
In order to solve the technical problem, the invention provides a thrombus aspiration catheter, which comprises a catheter main body, a balloon, a first Y-shaped valve and a second Y-shaped valve;
the catheter main body comprises an outer catheter and an inner catheter positioned in the outer catheter, the head end of the inner catheter is jointed with the head end of the outer catheter, a gap is reserved between the inner catheter and the rest part of the outer catheter except the head end, a plurality of suction holes are formed in the part where the inner catheter is jointed with the outer catheter, and the tail end of the inner catheter extends out of one part of the tail end of the outer catheter;
the balloon is sleeved on the outer catheter, and a part of the outer catheter, which is positioned in the balloon, is provided with a plurality of liquid injection holes;
the first Y-valve includes a first main branch in communication with the outer catheter and a first side branch;
the second Y-valve includes a second main branch in communication with the inner catheter and a second side branch. The head end refers to the end close to the thrombus. The tail end refers to the end close to the operator.
In one embodiment of the invention, the outer and inner conduits are coaxially arranged.
In one embodiment of the invention, the central part of the outer catheter inside the balloon is provided with four infusion holes 8 opposite in pairs.
In one embodiment of the present invention, the head ends of the outer and inner tubes are attached by heat shrinking.
In one embodiment of the present invention, the head ends of the inner catheter and the outer catheter, which are attached to each other by thermal shrinkage, are arc-shaped soft heads.
In one embodiment of the invention, the balloon is a liquid-filled balloon.
In one embodiment of the invention, the balloon is sleeved between the head end and the tail end of the outer catheter at a part close to the head end.
In one embodiment of the present invention, a plurality of protrusions are uniformly distributed on the surface of the balloon.
In one embodiment of the invention, the projection is an arcuate projection.
In one embodiment of the invention, the leading end of the first main branch communicates with the trailing end of the outer catheter.
In one embodiment of the invention, the head end of the secondary main branch communicates with the tail end of the inner conduit.
In one embodiment of the invention, the outer surface of the trailing end of the outer catheter is adhesively secured to the leading end of the first main leg by glue.
In one embodiment of the invention, the outer surface of the trailing end of the inner catheter is adhesively secured to the trailing end of the first main leg by glue.
In one embodiment of the present invention, the tail end of the first main branch and the head end of the second main branch are connected by a luer fitting.
In one embodiment of the present invention, the tail end of the first main branch is in a female luer structure, and the head end of the second main branch is in a male luer structure, and the two are connected through a luer connector.
In one embodiment of the invention, the end of the second main branch, which is not connected with the first main branch, is provided with a silica gel soft plug.
In one embodiment of the invention, the end of the first side branch not connected to the first main branch is provided with a one-way valve.
In one embodiment of the invention, the one-way valve and the first lateral branch are connected by a luer connector.
In one embodiment of the invention, the end of the secondary side branch not connected to the secondary main branch is provided with suction means.
In one embodiment of the invention, the suction device and the second side branch are connected by a luer fitting.
In one embodiment of the invention, the thrombus aspiration catheter further comprises a metal interference wire; the metal interference wire passes through the inner catheter.
In one embodiment of the invention, the metal interference wire is moved through a soft plug of silicone within the inner catheter.
In one embodiment of the invention, a cross-shaped passage is arranged on the silica gel soft plug, and the metal interference wire passes through the silica gel soft plug through the cross-shaped passage.
In one embodiment of the invention, the center of the silica gel soft plug is provided with a cross-shaped passage.
In one embodiment of the present invention, the head end of the metal interference wire is an arc-shaped soft head.
In one embodiment of the present invention, a developing ring is provided on the balloon.
In one embodiment of the invention, a visualization ring is provided at one or both ends of the balloon.
In one embodiment of the invention, the developer ring is embedded within the inner conduit.
In one embodiment of the invention, the inner and outer catheters are woven from an entirely metal mesh.
In one embodiment of the invention, the outer catheter is located in a balloon section having an outer diameter smaller than the outer diameter of other sections thereof.
[ advantageous effects ]
(1) The invention provides a thrombus aspiration catheter, which comprises a catheter main body, a balloon, a first Y-shaped valve and a second Y-shaped valve, wherein the catheter main body comprises an outer catheter and an inner catheter positioned in the outer catheter, the head ends of the inner catheter and the outer catheter are jointed, gaps are left between the inner catheter and the rest parts of the outer catheter except the head ends, a plurality of aspiration holes are formed in the part where the inner catheter and the outer catheter are jointed, the tail end of the inner catheter extends out of one part from the tail end of the outer catheter, the balloon is sleeved on the outer catheter, a plurality of liquid injection holes are formed in the part of the outer catheter positioned in the balloon, a first main branch of the first Y-shaped valve is communicated with the outer catheter, and a second main branch of the second Y-shaped valve is communicated with the inner catheter; when the thrombus suction catheter is used for sucking thrombus, only the first Y-shaped valve is used for injecting liquid into the saccule, and then the second Y-shaped valve is used for sucking the thrombus. Furthermore, the thrombus suction catheter is provided with a metal interference wire which can dredge large thrombus in the blood vessel so as to facilitate thrombus suction, and meanwhile, the metal interference wire can freely stretch out and draw back in the catheter through the built-in silica gel soft plug of the second Y-shaped valve, so that the thrombus suction catheter does not need to be thoroughly drawn out of the blood vessel in the suction process so as to facilitate timely dredging of the blood vessel. Furthermore, the developing ring is arranged at one end, close to the head end of the inner catheter, of the balloon of the thrombus suction catheter, the position of the balloon is convenient to determine due to the existence of the developing ring, the operation difficulty is reduced, and the thrombus suction catheter is convenient to operate due to the arrangement.
(2) The invention provides a thrombus aspiration catheter, wherein a balloon of the thrombus aspiration catheter is an injection balloon, the injection balloon has larger elasticity compared with an inflatable balloon, the blocking effect is milder, and if the balloon is broken, the damage of the injection balloon to the vessel wall is lower, so that the thrombus aspiration catheter is not easy to damage the vessel. Furthermore, the thrombus aspiration catheter is provided with an inner catheter and an outer catheter, the head ends of the inner catheter and the outer catheter which are jointed through thermal shrinkage are arc-shaped soft heads, the arc-shaped soft heads can protect the blood vessel wall when the catheter body enters the blood vessel, and the thrombus aspiration catheter is not easy to damage the blood vessel. Furthermore, the thrombus aspiration catheter is provided with the metal interference wire, the head end of the metal interference wire is an arc-shaped soft head, the arc-shaped soft head can protect the blood vessel wall when the metal interference wire enters the thrombus interference device, and the blood vessel is not easily damaged by the thrombus aspiration catheter provided by the invention.
(3) The invention provides a thrombus aspiration catheter, wherein balloon liquid injection cavities of the thrombus aspiration catheter are distributed between an inner catheter and an outer catheter, and 360-degree liquid injection can be realized, so that the balloon of the thrombus aspiration catheter is more labor-saving and quicker in liquid injection.
(4) The invention provides a thrombus aspiration catheter, wherein a plurality of arc-shaped protrusions are uniformly distributed on a balloon of the thrombus aspiration catheter, the arc-shaped protrusions increase the roughness of the surface of the balloon, expand the sliding friction force between the balloon and a blood vessel wall and better block the blood vessel, so that the balloon of the thrombus aspiration catheter is not easy to slide relative to the blood vessel wall, and the risk that thrombus flows into a far-end vein to cause postoperative no re-flowing is remarkably reduced when the thrombus is aspirated. Furthermore, considering that the arc-shaped bulges can influence the passing performance of the catheter main body in the blood vessel, the outer diameter of the outer catheter of the balloon part of the thrombus aspiration catheter is slightly smaller than the rest part of the outer catheter, so that the balloon is convenient to suspend in the air when passing through the blood vessel, and the friction force between the catheter main body and the wall of the blood vessel in the advancing process is reduced, therefore, the catheter main body of the thrombus aspiration catheter disclosed by the invention can pass through the blood vessel smoothly.
(5) The invention provides a thrombus suction catheter which is provided with a one-way valve and a silica gel soft plug, wherein the one-way valve and the silica gel soft plug are favorable for creating a closed space for a balloon liquid injection and thrombus suction process, so that the suction difficulty is reduced while external gas is prevented from entering a human body, and therefore, the thrombus suction difficulty is lower by using the thrombus suction catheter.
(6) The invention provides a thrombus aspiration catheter, wherein a plurality of aspiration holes are formed in the joint part of an inner catheter and an outer catheter, and the aspiration holes can improve the aspiration efficiency of thrombus and increase the blood vessel recirculation rate, so that the success rate of thrombus aspiration by using the thrombus aspiration catheter is higher.
(7) The invention provides a thrombus aspiration catheter, wherein an inner catheter and an outer catheter of the thrombus aspiration catheter are woven by all metal meshes, and the bearing capacity of a catheter main body on aspiration negative pressure is improved due to the all metal mesh woven structure, so that the thrombus aspiration catheter is not easy to damage.
Drawings
FIG. 1: an elevation view of one embodiment of the thrombectomy catheter of the present invention.
FIG. 2: a top view of one embodiment of the thrombectomy catheter of the present invention.
FIG. 3: a cross-sectional view of one embodiment of the thrombectomy catheter of the present invention.
FIG. 4: an elevation view of one embodiment of the balloon of the inventive thrombus aspiration catheter.
In fig. 1-4, a catheter main body 1, aballoon 2, a first Y-shaped valve 3, a second Y-shaped valve 4, an outer catheter 5, an inner catheter 6, a suction hole 7, a liquid injection hole 8, a first main branch 9, afirst side branch 10, a second main branch 11, a second side branch 12, abulge 13, a silica gel soft plug 14, a one-way valve 15, a metal interference wire 16 and a developingring 17.
Detailed Description
The invention will be further elucidated with reference to the embodiments and the drawings.
Example 1: thrombus aspiration catheter
Referring to fig. 1 to 4, the present invention provides a thrombus aspiration catheter including a catheter main body 1, aballoon 2, a first Y-valve 3 and a second Y-valve 4;
the catheter main body 1 comprises an outer catheter 5 and an inner catheter 6 positioned in the outer catheter 5, the head ends of the inner catheter 6 and the outer catheter 5 are jointed, gaps are reserved between the inner catheter 6 and the rest parts of the outer catheter 5 except the head ends, a plurality of suction holes 7 are formed in the joint part of the inner catheter 6 and the outer catheter 5, and the tail end of the inner catheter 6 extends out of one part of the tail end of the outer catheter 5;
theballoon 2 is sleeved on the outer catheter 5, and a plurality of liquid injection holes 8 are formed in the part, located inside theballoon 2, of the outer catheter 5;
the first Y-shaped valve 3 comprises a first main branch 9 and afirst side branch 10, the first main branch 9 is communicated with the outer conduit 5;
the second Y-valve 4 comprises a second main branch 11 and a second side branch 12, the second main branch 11 being in communication with the inner conduit 6. The head end refers to the end close to the thrombus. The tail end refers to the end close to the operator. When the thrombus suction catheter is used for sucking thrombus, only the first Y-shaped valve is used for injecting liquid into the saccule, and then the second Y-shaped valve is used for sucking the thrombus. The balloon injection cavity is distributed between the inner catheter and the outer catheter, and 360-degree injection can be realized, so that the balloon of the thrombus aspiration catheter saves more labor and is quicker in injection. The suction hole can improve the suction efficiency of thrombus and increase the blood vessel recanalization rate, so the success rate of sucking thrombus by using the thrombus suction catheter of the invention is higher.
Preferably, the outer and inner conduits 5, 6 are coaxially arranged.
Preferably, the central part of the outer catheter 5 inside theballoon 2 is provided with four liquid injection holes 8 opposite to each other in pairs.
Preferably, the head ends of the outer catheter 5 and the inner catheter 6 are attached by heat shrinking.
Preferably, the head ends of the inner catheter 5 and the outer catheter 6 which are jointed by thermal shrinkage are arc-shaped soft heads. The soft arc head can protect the vessel wall when the catheter main body enters the vessel, and the arrangement ensures that the thrombus suction catheter is less prone to damage the vessel.
Preferably, theballoon 2 is an infusion balloon. Compared with an inflatable balloon, the liquid injection balloon has larger elasticity and milder blocking effect, and if the balloon is broken, the liquid injection balloon has lower harm to the vessel wall, so that the thrombus suction catheter is not easy to damage the vessel.
Preferably, theballoon 2 is sleeved between the head end and the tail end of the outer catheter 5 at a part close to the head end.
Preferably, a plurality ofprotrusions 13 are uniformly distributed on the surface of theballoon 2.
Preferably, theprotrusion 13 is an arc-shaped protrusion. The arc-shaped bulges increase the roughness of the surface of the balloon, expand the sliding friction force between the balloon and the vessel wall and better block the vessel, so that the balloon of the thrombus suction catheter disclosed by the invention is not easy to slide relative to the vessel wall, and the risk that thrombus flows into a far-end vein to cause no postoperative re-flow when thrombus is sucked is remarkably reduced.
Preferably, the head end of the first main branch 9 is in communication with the tail end of the outer conduit 5.
Preferably, the head end of the secondary main branch 9 is in communication with the tail end of the inner conduit 6.
Preferably, the outer surface of the trailing end of the outer catheter 5 is adhesively fixed to the head end of the first main branch 9 by glue.
Preferably, the outer surface of the trailing end of said inner conduit 6 is fixed to the trailing end of the first main branch 9 by gluing.
Preferably, the tail end of the first main branch 9 and the head end of the second main branch 11 are connected through a luer connector.
Preferably, the tail end of the first main branch 9 is in a female luer structure, the head end of the second main branch 11 is in a male luer structure, and the two are connected through a luer connector.
Preferably, the end of the second main branch 11, which is not connected with the first main branch 9, is provided with a silica gel soft plug 14.
Preferably, a check valve 15 is arranged at the end of thefirst side branch 10 not connected with the first main branch 9. The existence of the one-way valve and the silica gel soft plug is beneficial to creating a closed space for the processes of balloon liquid injection and thrombus suction, and reduces the suction difficulty while preventing external gas from entering a human body, so that the thrombus suction catheter disclosed by the invention is low in thrombus suction difficulty.
Preferably, the one-way valve 15 is connected with the firstlateral branch 10 through a luer connector.
Preferably, the end of the second side branch 12 not connected to the second main branch 11 is provided with suction means.
Preferably, the suction device is connected to the second side branch 12 by a luer fitting.
Preferably, the thrombus aspiration catheter further comprises a metal interference wire 16; the metal interference wire 16 passes through the inner catheter 6. The metal interference wire can dredge massive thrombus in the blood vessel, so that thrombus suction is facilitated, meanwhile, the metal interference wire can freely stretch out and draw back in the catheter through the built-in silica gel soft plug of the second Y-shaped valve, the metal interference wire does not need to be completely drawn out of the blood vessel in the suction process, the blood vessel is convenient to dredge in time, and the thrombus suction catheter is more convenient to operate.
Preferably, the metal interference wire 16 moves through the silicone cork 14 inside the inner catheter 6.
Preferably, a cross-shaped passage is arranged on the silica gel soft plug 14, and the metal interference wire 16 passes through the silica gel soft plug 14 through the cross-shaped passage.
Preferably, the center of the silica gel soft plug 14 is provided with a cross-shaped passage.
Preferably, the head end of the metal interference wire 16 is an arc-shaped soft head. The head end of the metal interference wire is an arc-shaped soft head which can protect the vessel wall when the metal interference wire enters into the interference thrombus, and the arrangement also ensures that the thrombus suction catheter is not easy to damage the vessel.
Preferably, a developingring 17 is provided at one or both ends of theballoon 2.
Preferably, the developingring 17 is embedded inside the inner guide. The development ring is convenient to determine the position of the saccule, the operation difficulty is reduced, and the thrombus suction catheter is more convenient to operate due to the arrangement.
Preferably, the inner catheter 6 and the outer catheter 5 are woven from an entirely metal mesh. The existence of the all-metal mesh woven structure improves the bearing capacity of the catheter main body to the suction negative pressure, so that the thrombus suction catheter is not easy to damage.
Preferably, the outer catheter 5 has a smaller outer diameter at the portion located on theballoon 2 than at other portions thereof. Considering that the arc-shaped bulges can influence the passing performance of the catheter main body in the blood vessel, the outer diameter of the outer catheter of the balloon part of the thrombus aspiration catheter is slightly smaller than the rest part of the outer catheter, so that the balloon is convenient to suspend in the air when passing through the blood vessel, and the friction between the catheter main body and the wall of the blood vessel in the advancing process is reduced, therefore, the catheter main body of the thrombus aspiration catheter disclosed by the invention can pass through the blood vessel smoothly.
Example 2: thrombus aspiration method
The thrombus aspiration catheter of example 1 was used, and the specific procedure was as follows:
(1) the catheter main body 1 is close to the thrombus near end by using a guide wire, thesaccule 2 is injected through thefirst side branch 10 of the first Y-shaped valve 3, and the blood vessel is closed;
(2) after the blood vessel is closed, the guide wire is drawn out, the metal interference wire 16 is inserted, and the embolism position is dredged manually;
(3) and after the thrombus is loosened, the metal interference wire 16 is collected into the catheter main body 1, the thrombus is sucked through the second side branch 12 of the second Y-shaped valve 4, if the suction process is not smooth, the suction is stopped, and after the large thrombus is further loosened by using the metal interference wire 16, the suction is carried out again, and the step is repeated until the suction is completed.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A thrombus aspiration catheter, comprising a catheter main body, a balloon, a first Y-valve and a second Y-valve; the catheter main body comprises an outer catheter and an inner catheter positioned in the outer catheter, the head ends of the inner catheter and the outer catheter are jointed, gaps are reserved between the rest parts of the inner catheter and the outer catheter except the head ends, and a plurality of suction holes are formed in the joint part of the inner catheter and the outer catheter; the balloon is sleeved on the outer catheter, and a plurality of liquid injection holes are formed in the part, located inside the balloon, of the outer catheter.
2. A thrombectomy catheter according to claim 1, wherein said first Y-valve comprises a first main branch and a first side branch, the first main branch communicating with the outer catheter; the second Y-valve comprises a second main branch and a second side branch, the second main branch is communicated with the inner catheter, wherein the first Y-valve and the second Y-valve are arranged along the axial direction of the inner catheter and the outer catheter in an alignment manner.
3. A thrombus aspiration catheter according to claim 1 or 2, wherein the ends of the inner catheter and the outer catheter which are jointed by heat shrinkage are arc-shaped soft heads.
4. A thrombectomy catheter according to any of claims 1-3, wherein said balloon is a liquid-filled balloon.
5. A thrombectomy catheter according to any of claims 1-4, wherein a plurality of protrusions are uniformly distributed on the surface of said balloon.
6. A thrombectomy catheter according to any of claims 1-5, wherein the end of said second main leg not connected to the first main leg is provided with a soft plug of silica gel.
7. A thrombectomy catheter according to any of claims 1-6, wherein the end of said first side branch not connected to the first main branch is provided with a one-way valve.
8. A thrombectomy catheter according to any of claims 1-7, further comprising a metal interference wire; the metal interference wire passes through the inner catheter.
9. A thrombectomy catheter according to claim 8, wherein said wire is threaded through the silica gel cork to move within the inner catheter.
10. A thrombus aspiration catheter according to claim 8 or 9, wherein the silica gel cork is provided with a cross-shaped passage through which the metal interference wire passes.
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| CN202011444555.7ACN112587202A (en) | 2020-12-08 | 2020-12-08 | Thrombus aspiration catheter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011444555.7ACN112587202A (en) | 2020-12-08 | 2020-12-08 | Thrombus aspiration catheter |
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| CN112587202Atrue CN112587202A (en) | 2021-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305584A (en)* | 2021-12-29 | 2022-04-12 | 北京泰杰伟业科技有限公司 | Catheter system for taking thrombus from cerebral venous sinus |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1000584B1 (en)* | 1998-11-09 | 2003-11-12 | Possis Medical, Inc. | Rheolytic thrombectomy catheter |
| EP2319575A1 (en)* | 2001-01-09 | 2011-05-11 | MicroVention, Inc. | Embolectomy catheters and method for treatment |
| US20130102996A1 (en)* | 2011-05-26 | 2013-04-25 | Reverse Medical Corporation | Pressure Activated Foreign Body Removal System and Method of Use |
| CN205126342U (en)* | 2015-11-06 | 2016-04-06 | 深圳迈德科技有限公司 | Thrombus suction device |
| CN108969872A (en)* | 2018-09-28 | 2018-12-11 | 南京普微森医疗科技有限公司 | A kind of balloon guide catheter |
| CN209984773U (en)* | 2019-04-17 | 2020-01-24 | 孙英贤 | A guide wire and balloon catheter assembly |
| CN111110310A (en)* | 2020-02-14 | 2020-05-08 | 心凯诺医疗科技(上海)有限公司 | Novel sacculus guide pipe |
| CN111419338A (en)* | 2020-04-14 | 2020-07-17 | 玮铭医疗器械(上海)有限公司 | Balloon suction catheter device for intracranial thrombus removal |
| CN111991679A (en)* | 2019-05-09 | 2020-11-27 | 尼尔拉维有限公司 | Inflation lumen kink protection and balloon contouring |
- 2020
- 2020-12-08CNCN202011444555.7Apatent/CN112587202A/enactivePending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1000584B1 (en)* | 1998-11-09 | 2003-11-12 | Possis Medical, Inc. | Rheolytic thrombectomy catheter |
| EP2319575A1 (en)* | 2001-01-09 | 2011-05-11 | MicroVention, Inc. | Embolectomy catheters and method for treatment |
| US20130102996A1 (en)* | 2011-05-26 | 2013-04-25 | Reverse Medical Corporation | Pressure Activated Foreign Body Removal System and Method of Use |
| CN205126342U (en)* | 2015-11-06 | 2016-04-06 | 深圳迈德科技有限公司 | Thrombus suction device |
| CN108969872A (en)* | 2018-09-28 | 2018-12-11 | 南京普微森医疗科技有限公司 | A kind of balloon guide catheter |
| CN209984773U (en)* | 2019-04-17 | 2020-01-24 | 孙英贤 | A guide wire and balloon catheter assembly |
| CN111991679A (en)* | 2019-05-09 | 2020-11-27 | 尼尔拉维有限公司 | Inflation lumen kink protection and balloon contouring |
| CN111110310A (en)* | 2020-02-14 | 2020-05-08 | 心凯诺医疗科技(上海)有限公司 | Novel sacculus guide pipe |
| CN111419338A (en)* | 2020-04-14 | 2020-07-17 | 玮铭医疗器械(上海)有限公司 | Balloon suction catheter device for intracranial thrombus removal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114305584A (en)* | 2021-12-29 | 2022-04-12 | 北京泰杰伟业科技有限公司 | Catheter system for taking thrombus from cerebral venous sinus |
| CN114305584B (en)* | 2021-12-29 | 2023-12-22 | 北京泰杰伟业科技股份有限公司 | Catheter system for cerebral venous sinus thrombus removal |
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