CN114569292A - Non-choking balloon - Google Patents
Non-choking balloon Download PDFInfo
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- CN114569292A CN114569292A CN202210492100.5A CN202210492100A CN114569292A CN 114569292 A CN114569292 A CN 114569292A CN 202210492100 A CN202210492100 A CN 202210492100A CN 114569292 A CN114569292 A CN 114569292A
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- Prior art keywords
- balloon
- sub
- balloons
- flow
- blood
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
- A61F2/243—Deployment by mechanical expansion
- A61F2/2433—Deployment by mechanical expansion using balloon catheter
Abstract
The embodiment of the invention discloses a no-choke balloon, which comprises: a delivery catheter; the balloon is coated on the outer surface of the conveying catheter through compression treatment; and a channel between the blood vessel and the blood vessel for the circulation of blood. According to the technical scheme, the balloon which is subjected to compression treatment is coated outside the conveying catheter, and in the process that the balloon recovers deformation and expands the blood vessel, blood can flow through the channel between the non-resistance balloon and the blood vessel, so that the blood can not be completely blocked, and the cardiac arrest of a patient is prevented.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a flow-resistance-free balloon.
Background
Percutaneous aortic valve implantation refers to a treatment method of percutaneous puncture or peripheral vessel opening to push a catheter to an aortic valve for aortic valve replacement to relieve aortic stenosis. The operation is the first treatment method for patients with serious aortic stenosis, wherein the valve can not be replaced in a surgical way or the operation risk is extremely high. The specific operation method comprises the following steps: 1. general anesthesia or local anesthesia, percutaneous puncture or open femoral artery, under the guide of radiography pipe, with the straight steel wire reverse to pass through the severe narrow aortic valve and enter the left ventricle, through the pigtail pipe the straight steel wire is changed into the strong support hard steel wire. 2. The valve expansion saccule is pushed to the aortic stenosis part along the steel wire, rapid pacing is carried out, and the aortic stenosis is expanded by manual pressurization. 3. Ascending aorta was imaged, valve size was selected with reference to balloon diameter, and the dilatation balloon was withdrawn. 4. After the prosthetic valve is pushed through the aortic valve, the accurate position of the valve is positioned according to the lowest level of the right coronary sinus under the ascending aorta angiography and the prosthetic valve is released. When the valve is released, the right ventricle is paced quickly, the pressure of the left ventricle is reduced to below 60mmHg, the balloon is expanded to implant the artificial valve, and the balloon is exhausted, stops pacing and is withdrawn. The inventors have found that during dilation of the aortic valve, the inflated balloon tends to occlude the blood, causing cardiac arrest.
Disclosure of Invention
To solve the problems in the related art, embodiments of the present invention provide a flow-resistance-free balloon.
An embodiment of the present invention provides a flow-unimpeded balloon.
Specifically, the no-flow-resistance balloon comprises:
a delivery catheter;
the balloon is coated on the outer surface of the conveying catheter through compression treatment;
and a channel between the blood vessel and the blood vessel for the blood circulation.
Optionally, the balloon comprises a plurality of sub-balloons arranged around the delivery catheter; the gaps between the sub-balloons form the channels.
Optionally, the method further comprises:
a central scaffold positioned between the delivery catheter and balloon; the central support is a solid piece or the interior of the central support is hollow, forming the channel.
Optionally, the balloon comprises a plurality of sub-balloons which are arranged around the central bracket; the gaps between the sub-balloons form the channels.
Optionally, the balloon is an elastomeric or water-filled balloon.
Optionally, the sub-balloon is a sphere or an ellipsoid.
Optionally, a plurality of the sub-balloons are arranged in a petal shape; or the sub-balloons are arranged in a layered manner, and the sub-balloons on each layer are in a petal shape.
Optionally, the petals are the same or different in length.
Optionally, the method further comprises:
and the outer catheter is sleeved on the outer surface of the balloon.
Optionally, the wall of the conveying conduit is provided with a plurality of through holes.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a no-resistance balloon, which comprises: a delivery catheter; the balloon is coated on the outer surface of the conveying catheter through compression treatment; and a channel between the blood vessel and the blood vessel for the blood circulation. According to the technical scheme, the balloon which is subjected to compression treatment is coated outside the conveying catheter, and in the process that the balloon recovers deformation and expands the blood vessel, blood can flow through the channel between the non-resistance balloon and the blood vessel, so that the blood can not be completely blocked, and the cardiac arrest of a patient is prevented.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments thereof, when taken in conjunction with the accompanying drawings. The following is a description of the drawings.
Fig. 1 shows a schematic structural view of a no-flow-resistance balloon according to an embodiment of the invention.
Fig. 2 illustrates a top view of a flow-unimpeded balloon in accordance with an embodiment of the present invention.
Fig. 3 shows a schematic structural view of a no-flow-resistance balloon according to another embodiment of the present invention.
Fig. 4 shows a top view of a flow-unimpeded balloon in accordance with another embodiment of the present invention.
Fig. 5 shows a schematic view of an unobstructed balloon dilated vessel according to another embodiment of the present invention.
Detailed Description
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Also, for the sake of clarity, parts not relevant to the description of the exemplary embodiments are omitted in the drawings.
In the present invention, it is to be understood that terms such as "including" or "having," etc., are intended to indicate the presence of the disclosed features, numbers, steps, actions, components, parts, or combinations thereof, and are not intended to preclude the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof may be present or added.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The present invention has been made to solve, at least in part, the problems in the prior art, which have been discovered by the inventors.
Example 1
Fig. 1 shows a schematic structural view of a no-flow-resistance balloon according to an embodiment of the invention. Fig. 2 illustrates a top view of a flow-unimpeded balloon in accordance with an embodiment of the present invention.
As shown in fig. 1 and 2, the no-flow balloon 10 includes: a delivery catheter 11 and a balloon 12. The balloon 12 is treated by a compression process such as folding to be in a contracted state, and is coated on the outer surface of the delivery catheter 11 for delivery in a blood vessel.
In the mode of the invention, the balloon 12 can be an elastic body or a water injection balloon, the original state of the elastic body is an expansion form which can expand the blood vessel, in the original state, the elastic body is compressed and wrapped on the outer surface of the central bracket 14, when the blood vessel needs to be expanded, the balloon 12 can be started to generate elastic expansion and restore the original shape, and during the restoration deformation, blood can flow through a channel a between the blood vessel, so that the blood can not be completely blocked, and the cardiac arrest of a patient can be prevented.
Specifically, the balloon 12 includes a plurality of sub-balloons 121, which are circumferentially disposed on the delivery catheter 11 and fixed to the delivery catheter 11 by, for example, bonding, heat pressing or welding, and gaps between the sub-balloons 121 form a channel a with the blood vessel for blood circulation. In the process of expanding the blood vessel by restoring the deformation of the balloon 12, blood can flow through the channel a between the non-resistance balloon 10 and the blood vessel, so that the blood can not be completely blocked, and the cardiac arrest of a patient is prevented.
The no-resistance balloon 10 further comprises an outer catheter 13 which can be sleeved on the outer surface of the balloon 12 in a manner of the outer catheter 13, the balloon 12 is compressed and the expansion of the balloon 12 is limited, then the outer catheter 13 together with the delivery catheter 11 and the balloon 12 are delivered into the blood vessel, then the relative movement of the outer catheter 13 and the delivery catheter 11 is controlled, the limitation on the balloon 12 is removed, and the balloon 12 is released and returns to the deformed expansion, thereby playing a role of expanding the blood vessel. After the non-resistance balloon in the mode of the invention is used, the balloon 12 can be compressed into the outer catheter 13 by controlling the relative movement of the outer catheter 13 and the delivery catheter 11, and then the outer catheter 13 is moved out of the body.
According to the embodiment of the present invention, the sub-balloon 121 may be a sphere or an ellipsoid, preferably an ellipsoid, and a plurality of ellipsoids are arranged in a petal shape, and the gap between adjacent petals is used as the channel a.
According to the embodiment of the present invention, the sub-balloons 121 may be arranged in layers, and the number of the sub-balloons 121 in each layer may also be flexibly adjusted, specifically adjusted according to the actual condition of the blood vessel to be dilated, which is not limited by the present invention. It is understood that the number of sub-balloons 121 per layer is not preferably too large to prevent complete blood occlusion, and the number of sub-balloons 121 per layer is preferably 2 to 4 as tested.
According to the embodiment of the present invention, in the sub-balloons 121 arranged in layers, the sub-balloons 121 of adjacent layers may be selected from different shapes, for example, the sub-balloon 121 of the first layer is selected from an ellipsoid, and the sub-balloon 121 of the second layer is selected from a sphere. Further, in the sub-balloons 121 disposed in each layer, the adjacent sub-balloons 121 may also be selected from different shapes, for example, the adjacent two sub-balloons 121 are respectively selected from spheres and ellipsoids, so as to further facilitate forming the channel a, and prevent the blood from being blocked.
With continued reference to fig. 1, the unobstructed balloon 10 further includes a central scaffold 14. The central stent 14 is located between the delivery catheter 11 and the balloon 12, and the central stent 14 may be a solid piece, or the interior of the central stent 14 is hollow to form a channel a, so that blood can flow through the internal channel of the central stent 14, and the blood is prevented from being blocked after the balloon 12 is inflated. In the present embodiment, the number of the balloons 12 may be one or plural, that is, the plural sub balloons 121 are adopted, and the present invention is not limited thereto.
Specifically, the central stent 14 is hollow inside, and has a connecting member 141 with the delivery catheter 11, and the connecting member 141 has elasticity and certain strength, and can be folded toward the delivery catheter 11 when the balloon 12 is compressed, and can be unfolded outwards when the balloon 12 is released.
The material of the central stent 14 and the connecting member 141 is, for example, nitinol, 304 stainless steel, platinum-tungsten alloy, platinum-iridium alloy, cobalt alloy, etc., the structure of the central stent 14 can be obtained by winding, cutting or weaving, and it can also be made of developing material to improve the developing performance of the no-flow balloon 10 and the trackability thereof during use. In the present embodiment, the passage a for the blood to flow is formed in the inner passage of the central support 14, so as to prevent the blood from being blocked by the balloon 12 and prevent the patient from cardiac arrest.
In another embodiment, the central frame 14 may be a solid member and only serves to support the balloons 12, and the blood flow channel a is formed only in the gaps between the sub-balloons 121, so as to avoid the blood being blocked by the balloons 12 and prevent the patient from stopping.
In another embodiment, the balloon comprises a plurality of sub-balloons 121, which are circumferentially disposed on the central frame 14, so that a channel a for the circulation of blood is formed between the sub-balloons 121 and the inner channel of the central frame 14, which can further prevent the blood from being blocked by the balloon 12 and causing the patient to stop beating.
The above-described embodiments can be flexibly selected by those skilled in the art as needed, and the present invention is not limited thereto.
According to the embodiment of the invention, the wall of the conveying conduit 11 is provided with a plurality of through holes 111 for blood to flow through, thereby further preventing blood from being blocked. The shape of the through hole 111 may be a diamond shape, a square shape, a rectangular shape, a parallelogram shape, a polygon shape, a circular shape, an oval shape, an irregular shape, or the like, which is not limited by the present invention. In the embodiment of the present invention, the number of the through holes 111 is not limited, and those skilled in the art can flexibly adjust the number according to needs, which is not described herein.
Example 2
Fig. 3 shows a schematic structural view of a no-flow-resistance balloon according to another embodiment of the present invention. Fig. 4 shows a top view of a flow-unimpeded balloon in accordance with another embodiment of the present invention. Fig. 5 shows a schematic view of an unobstructed balloon dilated vessel according to another embodiment of the present invention.
As shown in fig. 3, 4, and 5, the no-flow balloon 20 includes: a delivery catheter 21, a balloon 22 and an extension catheter 23. The balloon 22 is treated by a compression process such as folding to assume a contracted state, covering the outer surface of the delivery catheter 21, for delivery in a blood vessel.
In the embodiment of the present invention, unlike embodiment 1, the balloon 22 may be an elastic body, or may be inflated after injecting a fluid, for example, the balloon 22 is compressed and then delivered into a blood vessel, and then a fluid such as a contrast solution is injected into the balloon 22 through the external catheter 23, so that the balloon 22 is inflated to restore its shape, thereby expanding the blood vessel a. After the non-resistance balloon in the mode of the invention is used, the balloon 22 can be retracted in a mode of extracting contrast medium, and then is moved out of the body.
The balloon 22 includes a plurality of sub-balloons 221, which are circumferentially disposed on the delivery catheter 21. The sub-balloons 221 may be arranged in layers, the sub-balloons 221 in each layer are arranged in a petal shape, and the length of each petal is the same or different, and the sub-balloons 221 with different lengths are preferred. Compared with two petals (namely two sub-balloons 221) with the same length, the sub-balloons 221 with different lengths can be overlapped to form a channel a for blood circulation and simultaneously utilize the longer sub-balloons 221 to better expand the blood vessel due to the reverse acting force of the blood vessel in the process of expansion and recovery deformation of the sub-balloons 221 with different lengths, so that the blood is prevented from being blocked. In the present mode, it was tested that the shortest petals were 1/2-3/4 the longest petals.
The non-resistance balloon 20 further comprises a liquid passing chamber 24, and the liquid passing chamber 24 is communicated with each sub-balloon 221 and communicated with the external conduit 23. The liquid passing chamber 24 serves as a chamber for communicating the external connection conduit 23 with each sub-balloon 221, and facilitates the injection of fluid from the external connection conduit 23 to each sub-balloon 221. Specifically, a conduit may be externally covered on the conveying conduit 21 as the liquid passing chamber 24, which is not described in detail herein.
According to the embodiment of the invention, the wall of the conveying conduit 21 is provided with a plurality of through holes 211 for blood to flow through, thereby further preventing the blood from being blocked. The shape of the through hole 211 may be a diamond shape, a square shape, a rectangular shape, a parallelogram shape, a polygon shape, a circular shape, an oval shape, an irregular shape, or the like, which is not limited by the present invention. In the embodiment of the present invention, the number of the through holes 211 is not limited, and those skilled in the art can flexibly adjust the through holes as needed, which is not described herein.
Other technical details of the embodiment of the present invention may refer to the part of embodiment 1, and are not described herein again.
According to an embodiment of the invention, by the non-flow-blocking balloon comprising: the balloon blood vessel dilatation catheter comprises a conveying catheter, a balloon and a channel, wherein the balloon is coated on the outer surface of the conveying catheter through compression treatment, the channel is used for blood circulation, and in the process that the balloon recovers deformation and expands a blood vessel, blood can circulate from the channel between the non-resistance balloon and the blood vessel, so that the blood can not be completely blocked, and the cardiac arrest of a patient is prevented.
According to the embodiment of the invention, the balloon comprises a plurality of sub-balloons which are arranged on the delivery catheter in a surrounding mode, and gaps between the sub-balloons form the channel.
According to the embodiment of the invention, the non-choke balloon further comprises a central support which is positioned between the delivery catheter and the balloon, wherein the central support is a solid piece or the inner part of the central support is hollow, so that the channel is formed.
According to the embodiment of the invention, the balloon comprises a plurality of sub-balloons which are arranged on the central bracket in a surrounding manner, and gaps among the sub-balloons form the channel.
According to the embodiment of the invention, the sub-balloons are arranged in a petal shape; or the sub-balloons are arranged in a layered mode, the sub-balloons on each layer are in a petal shape, a channel is formed by utilizing gaps among petals, or the sub-balloons are overlapped to form a channel for blood circulation, so that blood is prevented from being completely blocked.
According to an embodiment of the invention, the balloon is compressed by an outer catheter being sleeved on an outer surface of the balloon.
According to an embodiment of the invention, the length of each petal is the same or different.
According to an embodiment of the invention, the number of sub-balloons in each layer is 2-4.
According to an embodiment of the invention, the length of the shortest of said petals in each layer is 1/2-3/4 of the longest of said petals.
According to an embodiment of the invention, the sub-balloon is a sphere or an ellipsoid.
According to the embodiment of the invention, the pipe wall of the conveying conduit is provided with a plurality of through holes.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features and (but not limited to) features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (10)
1. An unobstructed flow balloon, comprising:
a delivery catheter;
the balloon is coated on the outer surface of the conveying catheter through compression treatment;
and a channel between the blood vessel and the blood vessel for the circulation of blood.
2. The flow-unimpeded balloon of claim 1 wherein the balloon comprises a plurality of sub-balloons disposed circumferentially on the delivery catheter; the gaps between the sub-balloons form the channels.
3. The flow-unimpeded balloon of claim 1 further comprising:
a central scaffold positioned between the delivery catheter and balloon; the central support is a solid piece or the interior of the central support is hollow, forming the channel.
4. The flow-unimpeded balloon of claim 3 wherein the balloon includes a plurality of sub-balloons circumferentially disposed on the central support; the gaps between the sub-balloons form the channels.
5. The flow-free balloon of any of claims 1-4, wherein the balloon is an elastomeric or water-filled balloon.
6. The flow-unimpeded balloon of claim 2 or 4 wherein the sub-balloons are spheres or ellipsoids.
7. The flow-unimpeded balloon of claim 6, wherein a number of the sub-balloons are arranged in a petal-like arrangement; or the sub-balloons are arranged in a layered manner, and the sub-balloons on each layer are in a petal shape.
8. The flow-unimpeded balloon of claim 7 wherein the petals are the same or different lengths.
9. The flow-unimpeded balloon of claim 1 further comprising:
and the outer catheter is sleeved on the outer surface of the balloon.
10. The balloon of claim 1, wherein the wall of the delivery catheter has a plurality of through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210492100.5A CN114569292A (en) | 2022-05-07 | 2022-05-07 | Non-choking balloon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210492100.5A CN114569292A (en) | 2022-05-07 | 2022-05-07 | Non-choking balloon |
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| Publication Number | Publication Date |
|---|---|
| CN114569292A true CN114569292A (en) | 2022-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210492100.5A Pending CN114569292A (en) | 2022-05-07 | 2022-05-07 | Non-choking balloon |
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| CN (1) | CN114569292A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243109A (en) * | 2016-03-29 | 2017-10-13 | 深圳市信立泰生物医疗工程有限公司 | The not foley's tube of blocking blood flow |
| CN107427378A (en) * | 2015-04-06 | 2017-12-01 | C·R·巴德公司 | Inflatable perfusion balloon catheter with extranets and associated method |
| CN108697878A (en) * | 2016-03-04 | 2018-10-23 | 巴德股份有限公司 | Perfusion balloon catheter with inner valve |
| CN110123489A (en) * | 2018-02-02 | 2019-08-16 | 上海微创心通医疗科技有限公司 | Dilating sacculus and sacculus dilating catheter |
| JP2020058846A (en) * | 2019-12-26 | 2020-04-16 | シー・アール・バード・インコーポレーテッドＣ Ｒ Ｂａｒｄ Ｉｎｃｏｒｐｏｒａｔｅｄ | Perfusion balloon with selectively actuatable valve |
| CN213552242U (en) * | 2020-10-22 | 2021-06-29 | 雅安市人民医院 | Balloon dilatation stent for vertebroplasty |
-
2022
- 2022-05-07 CN CN202210492100.5A patent/CN114569292A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107427378A (en) * | 2015-04-06 | 2017-12-01 | C·R·巴德公司 | Inflatable perfusion balloon catheter with extranets and associated method |
| CN108697878A (en) * | 2016-03-04 | 2018-10-23 | 巴德股份有限公司 | Perfusion balloon catheter with inner valve |
| CN107243109A (en) * | 2016-03-29 | 2017-10-13 | 深圳市信立泰生物医疗工程有限公司 | The not foley's tube of blocking blood flow |
| CN110123489A (en) * | 2018-02-02 | 2019-08-16 | 上海微创心通医疗科技有限公司 | Dilating sacculus and sacculus dilating catheter |
| JP2020058846A (en) * | 2019-12-26 | 2020-04-16 | シー・アール・バード・インコーポレーテッドＣ Ｒ Ｂａｒｄ Ｉｎｃｏｒｐｏｒａｔｅｄ | Perfusion balloon with selectively actuatable valve |
| CN213552242U (en) * | 2020-10-22 | 2021-06-29 | 雅安市人民医院 | Balloon dilatation stent for vertebroplasty |
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