CN114984420A - Sinus ostial stent expansion device and sinus ostial stent - Google Patents

Sinus ostial stent expansion device and sinus ostial stent Download PDF

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Publication number
CN114984420A
CN114984420A CN202210700603.7A CN202210700603A CN114984420A CN 114984420 A CN114984420 A CN 114984420A CN 202210700603 A CN202210700603 A CN 202210700603A CN 114984420 A CN114984420 A CN 114984420A
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CN
China
Prior art keywords
balloon
catheter
stent
region
balloon portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210700603.7A
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Chinese (zh)
Inventor
侯昭晖
韩明鲲
刘穹
袁虎
刘宸箐
林龑
徐晓明
史庆
王海军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baiwei Wuhan Medical Technology Co ltd
Original Assignee
Baiwei Wuhan Medical Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Baiwei Wuhan Medical Technology Co ltd filed Critical Baiwei Wuhan Medical Technology Co ltd
Priority to CN202210700603.7A priority Critical patent/CN114984420A/en
Publication of CN114984420A publication Critical patent/CN114984420A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02—Dilators made of swellable material
    • 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
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/06—Head
    • A61M2210/0618—Nose

Abstract

The invention discloses a sinus ostial stent expansion device and a sinus ostial stent, wherein the sinus ostial stent expansion device comprises: a connection valve capable of communicating with an external inflation device; the balloon catheter is communicated with the connecting valve, a first balloon part and a second balloon part are arranged on the balloon catheter, a rack empty area is arranged between the first balloon part and the second balloon part, and the first balloon part and the second balloon part are both communicated with the balloon catheter; in the case of expanding the sinus ostium stent by the stent expanding device, the first balloon portion and the second balloon portion serve to support regions of the sinus ostium which are located on both sides of the sinus ostium, the goaf being opposite to the sinus ostium.

Description

Sinus ostial stent expansion device and sinus ostial stent
Technical Field
The invention relates to the technical field of medical equipment, in particular to a sinus ostial stent expansion device and a sinus ostial stent.
Background
At present, in order to treat diseases in nasal cavities, a stent is often needed to support an internal structure so as to treat the diseases. The internal structure is supported by the support, so that treatment is facilitated, the support can influence the operation and treatment effect during treatment on the supporting effect of the cavity, and in the center of the related art, the support has poor effect on the internal structure support, is easy to fall off and cannot meet the treatment requirement.
Disclosure of Invention
An object of the present invention is to provide a sinus ostial stent dilation device and a new technical solution of a sinus ostial stent.
According to a first aspect of the present invention, there is provided a sinus stent expansion device including:
a connection valve capable of communicating with an external inflation device;
the balloon catheter is communicated with the connecting valve, a first balloon part and a second balloon part are arranged on the balloon catheter, a rack empty area is arranged between the first balloon part and the second balloon part, and the first balloon part and the second balloon part are both communicated with the balloon catheter;
in the case of expanding the sinus ostium stent by the stent expanding device, the first balloon portion and the second balloon portion serve to support regions of the sinus ostium which are located on both sides of the sinus ostium, the goaf being opposite to the sinus ostium.
Optionally, a single balloon of an integrated structure is arranged on the balloon catheter, a concave portion which is concave towards the inner side is arranged in the middle of the single balloon, the concave portion forms the vacant area, the first balloon portion is formed on one side of the concave portion, and the second balloon portion is formed on the other side of the concave portion.
Optionally, the first and second balloon portions are disposed around the balloon catheter.
Optionally, the sinus ostium stent dilatation device further comprises a developing ring, and the developing ring is sleeved in the frame empty area.
Optionally, the balloon catheter has a first opening in communication with the first balloon portion and a second opening in communication with the second balloon portion.
Optionally, the connection valve comprises a main body, the main body has a catheter caulking groove, the main body is provided with a first connection pipe, a second connection pipe and a third connection pipe, and the first connection pipe, the second connection pipe and the third connection pipe are all communicated with the catheter caulking groove;
the balloon catheter comprises a first catheter, a second catheter and a third catheter, the first catheter, the second catheter and the third catheter are all embedded in the catheter embedding groove, the second catheter is sleeved outside the third catheter, the first catheter is sleeved outside the second catheter, a first cavity is formed between the first catheter and the second catheter, and a second cavity is formed between the second catheter and the third catheter;
the tail end of the first catheter is located in the first balloon portion, the first connecting pipe is communicated with the first cavity, the first cavity is communicated with the first balloon portion, the tail end of the second catheter is located in the second balloon portion, the second connecting pipe is communicated with the second cavity, the second cavity is communicated with the second balloon portion, and the third connecting pipe is communicated with the third catheter.
Optionally, the first balloon portion comprises an annular flap, one side of the annular flap is sealingly connected around the first catheter and the other side is sealingly connected around the second catheter, such that the first cavity is in communication with the interior of the first balloon portion;
the second balloon portion comprises an annular balloon sheet, one side of the annular balloon sheet is connected around the second catheter in a sealing mode, and the other side of the annular balloon sheet is connected around the third catheter in a sealing mode, so that the second cavity is communicated with the second balloon portion;
the overhead area is located in the second duct.
According to a second aspect of the present invention, there is provided a sinus ostial stent applied to the sinus ostial stent expansion device according to the first aspect, the sinus ostial stent comprising a stent body including a first region and a second region distributed in an axial direction, the stent body further including a third region located between the first region and the second region;
in the case of expanding the sinus ostium stent by the sinus ostium expander, the first balloon portion abuts the first region, the second balloon portion abuts the second region, the framed space is opposite to the third region for abutting the sinus ostium, and the third region is recessed inward of the sinus ostium stent with respect to the first region and the second region.
Optionally, the outer side surface of the stent body is provided with a drug-loaded layer.
Optionally, the drug-loaded layer is a thin film structure formed by one of spray coating, dip coating and vapor deposition.
According to one embodiment of the disclosure, the balloon catheter is inflated through the connecting valve to enable the first balloon part and the second balloon part to be expanded, so that the sinus ostial stent is driven to expand through the first balloon part and the second balloon part, an overhead area between the first balloon part and the second balloon part is opposite to the position of a sinus ostial, so that two side areas of the sinus ostial stent located at the position of the sinus ostial are expanded, the sinus ostial stent can adapt to the structure of the sinus ostial, and the problems that the sinus ostial stent is poor in supporting effect and easy to fall off are solved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural view of a sinus ostium dilating device in a case where the sinus ostium dilating device dilates the sinus ostium.
Fig. 2 is a partial structural view in the case where the sinus stent dilation device expands a sinus stent according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural view of a sinus ostial stent in an embodiment of the present disclosure.
Fig. 4 is a second schematic structural view of a sinus ostial stent in an embodiment of the present disclosure.
Description of the reference numerals:
1. a connection valve; 10. erecting a vacant area; 11. a first connecting pipe; 12. a second connecting pipe; 13. a third connecting pipe;
20. a balloon catheter; 200. an air inlet cavity; 201. a first opening; 202. a second opening; 21. a first conduit; 210. a first cavity; 22. a second conduit; 220. a second cavity; 23. a third conduit;
31. a first balloon portion; 32. a second balloon portion;
4. a developing ring;
5. a stent body; 51. a first region; 52. a second region; 53. and a third region.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to an embodiment of the present disclosure, there is provided a sinus stent expansion device, as shown in fig. 1 to 4, including:
a connecting valve 1, wherein the connecting valve 1 can be communicated with an external inflating device;
a balloon catheter 20, wherein the balloon catheter 20 is communicated with the connecting valve 1, a first balloon portion 31 and a second balloon portion 32 are arranged on the balloon catheter 20, an overhead area 10 is arranged between the first balloon portion 31 and the second balloon portion 32, and both the first balloon portion 31 and the second balloon portion 32 are communicated with the balloon catheter 20;
in the case of expanding the sinus ostium stent by the stent expanding device, the first balloon portion 31 and the second balloon portion 32 serve to support the regions of the sinus ostium on both sides of the sinus ostium, and the goaf 10 is opposite to the sinus ostium.
In the embodiment of the present disclosure, the external inflation device inflates the balloon catheter 20 through the connection valve 1, thereby inflating the first balloon portion 31 and the second balloon portion 32, so as to expand the first balloon portion 31 and the second balloon portion 32, thereby driving the sinus ostial stent to expand through the first balloon portion 31 and the second balloon portion 32, the overhead region 10 between the first balloon portion 31 and the second balloon portion 32 is opposite to the position of the sinus ostia, thereby expanding the two side regions of the sinus ostial stent located at the sinus ostia position, so that the sinus ostial stent can adapt to the structure of the sinus ostia, and the problems of poor sinus ostial stent support effect and easy falling off are avoided. The ostial stent expands on both sides of the ostial site, forming a support in the area on both sides of the ostium.
Alternatively, the first balloon portion 31 and the second balloon portion 32 may be filled with a medium such as liquid or gas through the balloon catheter 20.
In one embodiment, the balloon catheter 20 is provided with a single balloon of an integrated structure, the middle of the single balloon is provided with a concave portion which is concave towards the inner side, the concave portion forms the overhead space 10, one side of the concave portion forms the first balloon portion 31, and the other side of the concave portion forms the second balloon portion 32.
In the disclosed embodiment, the structure of the balloon portion is simplified by forming the first balloon portion 31, the second balloon portion 32, and the overhead region 10 as an integral structure of a single balloon.
For example, the material of the single balloon may be a compliant material, and the first and second balloon portions 31 and 32 are deflated without inflating the first and second balloon portions 31 and 32. When the first balloon portion 31 and the second balloon portion 32 are inflated, the first balloon portion 31 and the second balloon portion 32 are inflated.
Alternatively, the material of the single balloon may be a non-compliant material. The shape structure of the single balloon is preset, and after the shape structure is set, the single balloon is arranged on the balloon catheter 20 and is changed into a preset shape after being inflated. For example, the one-balloon is configured to become a preset shape having the first balloon portion 31, the second balloon portion 32 and the overhead section 10 after being inflated.
Alternatively, in the embodiment where the first balloon portion 31 and the second balloon portion 32 are independent, the material of each of the first balloon portion 31 and the second balloon portion 32 may be a compliant material or a non-compliant material.
In one embodiment, the first and second balloon portions 31, 32 are disposed around the balloon catheter 20.
In the disclosed embodiment, the first and second balloon portions 31 and 32 are inflated in the circumferential direction of the balloon catheter 20 to form a support from the inside of the ostial stent to the circumferential side, so that the ostial stent is uniformly expanded to the circumferential side.
In one embodiment, as shown in fig. 1 and 2, the sinus ostial stent dilation device further comprises a visualization ring 4, wherein the visualization ring 4 is sleeved on the framed section 10.
In the disclosed embodiment, the overhead zone 10 is opposite to the sinus ostium area during the expansion of the sinus ostium dilator using the sinus ostium expander device. The sinus ostium region expansion effect of the sinus ostium can be observed by the development ring 4, so that the sinus ostium position supporting effect of the sinus ostium can be adjusted by adjusting the expansion of the first and second balloon portions 31 and 32.
In one embodiment, as shown in fig. 2, the balloon catheter 20 has a first opening 201 and a second opening 202, the first opening 201 being in communication with the first balloon portion 31, the second opening 202 being in communication with the second balloon portion 32.
In the disclosed embodiment, the first opening 201 is formed on the balloon catheter 20 to communicate with the first balloon portion 31, so that the first balloon portion 31 can be inflated by the balloon catheter 20. A second opening is formed in the balloon catheter 20 to communicate with the second balloon portion 32 so as to be able to inflate the second balloon portion 32 through the balloon catheter 20. The simultaneous expansion of the ostial stent in the ostial regions can be achieved by simultaneously inflating the first and second balloon portions 31, 32 with the balloon catheter 20.
Optionally, a first opening 201 is opened in the sidewall of the balloon catheter 20. The distal opening of the balloon catheter 20 forms a second opening 202. For example, the balloon catheter 20 is sleeved outside the third catheter 23, and the space between the balloon catheter 20 and the third catheter 23 forms an air inlet cavity 200. The third catheter tube 23 extends out of the balloon catheter 20 so that the distal end of the balloon catheter 20 is positioned inside the second balloon portion 32.
In one embodiment, as shown in fig. 1, the connection valve includes a body having a catheter caulking groove, the body being provided with a first connection pipe, a second connection pipe, and a third connection pipe, the first connection pipe, the second connection pipe, and the third connection pipe all communicating with the catheter caulking groove;
the balloon catheter comprises a first catheter, a second catheter and a third catheter, the first catheter, the second catheter and the third catheter are all embedded in the catheter embedding groove, the second catheter is sleeved outside the third catheter, the first catheter is sleeved outside the second catheter, a first cavity is formed between the first catheter and the second catheter, and a second cavity is formed between the second catheter and the third catheter;
the tail end of the first catheter is located in the first balloon portion, the first connecting pipe is communicated with the first cavity, the first cavity is communicated with the first balloon portion, the tail end of the second catheter is located in the second balloon portion, the second connecting pipe is communicated with the second cavity, the second cavity is communicated with the second balloon portion, and the third connecting pipe is communicated with the third catheter.
In the disclosed embodiment, the first and second conduits 21 and 22 can be inflated by the connecting valve 1, thereby inflating the first and second balloon portions 31 and 32, respectively.
For example, inflating the first cavity 210 is the first balloon portion 31 expanding. Inflation of second cavity 220 expands second balloon portion 32. By adjusting the amount of inflation to the first balloon portion 31 and the second balloon portion 32, the amount of expansion and the rate of expansion of the first balloon portion 31 and the second balloon portion 32 can be adjusted. This enables the first and second balloon portions 31 and 32 to provide different expansion effects to the sinus stent. For example, the amount of expansion of the portion supported by the first balloon portion 31 is made different from the amount of expansion of the portion supported by the second balloon portion 32.
The first connecting pipe 11 communicates with an external inflation apparatus to be able to inflate into the first cavity 210, thereby enabling the first balloon portion 31 to expand. And communicates with an external inflation apparatus through the second connection tube 12 to be able to inflate into the second cavity 220, thereby enabling the second balloon portion 32 to be inflated.
The first conduit 21, the second conduit 22 and the third conduit 23 are fixed to the main body by means of conduit caulking. The first cavity 210 is in communication with the first connecting tube 11 only, for example by providing a sealing compound at the end of the first conduit 21 so that the first conduit 21 forms a sealed connection in the conduit rebate. A sealant is disposed at the end of the second conduit 22 to make the second conduit 22 form a sealed connection in the conduit caulking groove, and the second cavity 220 is communicated with the second connecting pipe 12 only.
The third catheter 23 can be used for delivering drugs into the body. For example, the fluid is delivered into the third catheter 23 through the third connection tube 13 to be delivered into the body through the third catheter 23.
For example, the end of the first cavity 210 serves as a first opening of the balloon catheter and the end of the second cavity 220 serves as a second opening of the balloon catheter.
In one embodiment, as shown in fig. 1, the first balloon portion 31 comprises an annular flap, one side of which is sealingly connected around the first conduit 21 and the other side of which is sealingly connected around the second conduit 22, such that the first cavity 210 communicates with the interior of the first balloon portion 31;
the second balloon portion 32 comprises an annular flap having one side sealingly connected around the second conduit 22 and the other side sealingly connected around the third conduit 23 such that the second cavity 220 is in communication with the second balloon portion 32;
the overhead section 10 is located in the second guide duct 22. For example, the developing ring 4 is sleeved on the second conduit 22.
In the disclosed embodiments, the capsule body is formed by annular tablet wrapping. For example, the annular caplet is a stretchable gas-impermeable material. The first balloon portion 31 is formed by wrapping the end position of the first cavity 210 with an annular flap. The second balloon portion 32 is formed by wrapping the end position of the second cavity 220 with an annular flap.
According to an embodiment of the present disclosure, there is provided a sinus ostial stent applied to a sinus ostial stent expansion device according to any one of the embodiments of the present disclosure, as shown in fig. 1 to 4, the sinus ostial stent includes a stent body 5, the stent body 5 includes a first region 51 and a second region 52 distributed in an axial direction, the stent body 5 further includes a third region 53 located between the first region 51 and the second region 52;
in the case of expanding the sinus stent by the sinus stent dilating device, the first balloon portion 31 abuts against the first region 51, the second balloon portion 32 abuts against the second region 52, the goaf 10 is opposite to the third region 53, the third region 53 is for abutting against the sinus ostium, and the third region 53 is recessed inward of the sinus stent with respect to the first and second regions 51 and 52.
In the disclosed embodiment, the treatment is performed with the ostial stent support in the ostial position, the third area 53 of the ostial stent forms a support against the ostium. The ostial stent dilation device is passed into the ostial stent. The overhead region 10 is opposed to the third region 53, the first balloon portion 31 is opposed to the first region 51, and the second balloon portion 32 is opposed to the second region 52.
The first balloon portion 31 and the second balloon portion 32 are inflated by the ostial stent expanding device, thereby expanding the first balloon portion 31 to expand the first region 51 and the second balloon portion 32 to expand the second region 52. The third region 53 abuts against the ostium and the third region 53 forms a structure depressed inward of the sinus ostium relative to the first and second regions 51 and 52 after the first and second regions 51 and 52 are expanded, thus enabling the sinus ostium to stably form a support at the ostium position.
For example, a sinus ostial stent is provided with a drug on the outside to provide a therapeutic effect to the sinus ostia.
Optionally, the outer side surface of the stent body is provided with a drug-loaded layer.
In embodiments of the present disclosure, the drug-loaded layer has a therapeutic drug. The sinus ostial stent is arranged at the focus position to form a support, so that the drug-loaded layer is contacted with the focus, thereby forming a treatment effect.
Optionally, the drug-loaded layer forms a complete sleeve structure on the surface of the sinus ostial stent so as to be sleeved outside the ear-nose intracavity stent.
The drug-loaded layer includes three portions corresponding to the first, second and third regions 51, 52 and 53 so that the drug-loaded layer can be applied to the sinus ostium stent during the deformation of the sinus ostium stent, allowing the sinus ostium stent to form an effective support for the drug-loaded layer.
In one embodiment, the drug-loaded layer is a thin film structure formed by one of spray coating, dip coating, and vapor deposition.
The thin film structure can be more easily provided on the outer side surface of the stent body 5, and is easily deformed along with the deformation of the stent body 5.
For example, a drug is provided on the surface of the stent body 5 by spraying, dipping, vapor deposition, or the like to form a thin film structure.
Alternatively, the drug may be applied to the carrier by spraying, dipping, vapor deposition, or the like, and the carrier may be attached to the outer surface of the stent body 5. For example, the carrier is bonded to the outer side surface of the stent body 5.
In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.
Although some specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. An ostial stent dilation device, comprising:
a connection valve capable of communicating with an external inflation device;
the balloon catheter is communicated with the connecting valve, a first balloon part and a second balloon part are arranged on the balloon catheter, a rack empty area is arranged between the first balloon part and the second balloon part, and the first balloon part and the second balloon part are both communicated with the balloon catheter;
in the case of expanding the sinus ostium stent by the stent expanding device, the first balloon portion and the second balloon portion serve to support regions of the sinus ostium which are located on both sides of the sinus ostium, the goaf being opposite to the sinus ostium.
2. The ostial stent dilation device according to claim 1, wherein a single balloon of an integrated structure is provided on the balloon catheter, a middle portion of the single balloon has a concave portion depressed inward, the concave portion forms the goaf, one side of the concave portion forms the first balloon portion, and the other side forms the second balloon portion.
3. The ostial stent dilation device of claim 1, wherein the first balloon portion and the second balloon portion are disposed around the balloon catheter.
4. The sinus ostium stent dilation device according to claim 1, wherein the sinus ostium stent dilation device further comprises a visualization ring that is looped around the stented region.
5. The ostial stent dilation device of claim 1, wherein the balloon catheter has a first opening in communication with the first balloon portion and a second opening in communication with the second balloon portion.
6. The ostial stent dilation device of claim 1, wherein the connection valve comprises a body having a catheter caulking groove, the body being provided with a first connection tube, a second connection tube, and a third connection tube, the first connection tube, the second connection tube, and the third connection tube all being in communication with the catheter caulking groove;
the balloon catheter comprises a first catheter, a second catheter and a third catheter, the first catheter, the second catheter and the third catheter are all embedded in the catheter embedding groove, the second catheter is sleeved outside the third catheter, the first catheter is sleeved outside the second catheter, a first cavity is formed between the first catheter and the second catheter, and a second cavity is formed between the second catheter and the third catheter;
the tail end of the first catheter is located in the first balloon portion, the first connecting pipe is communicated with the first cavity, the first cavity is communicated with the first balloon portion, the tail end of the second catheter is located in the second balloon portion, the second connecting pipe is communicated with the second cavity, the second cavity is communicated with the second balloon portion, and the third connecting pipe is communicated with the third catheter.
7. The ostial stent dilation device of claim 6, wherein the first balloon portion includes an annular flap that is sealingly connected around the first catheter on one side and the second catheter on another side to place the first cavity in communication with an interior of the first balloon portion;
the second balloon portion comprises an annular balloon sheet, one side of the annular balloon sheet is connected around the second catheter in a sealing mode, and the other side of the annular balloon sheet is connected around the third catheter in a sealing mode, so that the second cavity is communicated with the second balloon portion;
the overhead area is located in the second duct.
8. The ostial stent of any one of claims 1-7, wherein the ostial stent comprises a stent body, the stent body comprising a first region and a second region distributed along an axial direction, the stent body further comprising a third region between the first region and the second region;
in the case of expanding the sinus ostium stent by the sinus ostium expander, the first balloon portion abuts the first region, the second balloon portion abuts the second region, the framed space is opposite to the third region for abutting the sinus ostium, and the third region is recessed inward of the sinus ostium stent with respect to the first region and the second region.
9. The ostial stent of claim 8, wherein an outer surface of the stent body is provided with a drug-loaded layer.
10. The ostial stent of claim 9, wherein the drug-loaded layer is a thin film structure formed by one of spray coating, dip coating, and vapor deposition.
CN202210700603.7A 2022-06-20 2022-06-20 Sinus ostial stent expansion device and sinus ostial stent Pending CN114984420A (en)

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US20040015231A1 (en) * 2002-07-22 2004-01-22 Suhr William S. Segmented balloon catheter for stenting bifurcation lesions
US20060265041A1 (en) * 2005-05-23 2006-11-23 Arashmidos Sanati Apparatus and methods for delivering a stent into an ostium
JP2011200589A (en) * 2010-03-26 2011-10-13 Terumo Corp Balloon catheter
CN102989064A (en) * 2012-11-13 2013-03-27 浦易（上海）生物技术有限公司 Sacculus medicine-spraying device for treating nasosinusitis or allergic rhinitis
US20180133042A1 (en) * 2015-07-13 2018-05-17 Jotec Gmbh Balloon catheter
CN107898540A (en) * 2017-09-29 2018-04-13 翎秀生物科技（上海）有限公司 The sub-assembly of nasal sinus foley's tube and the intranasal stent of balloon-expandable
CN215780885U (en) * 2021-08-02 2022-02-11 柏为（武汉）医疗科技股份有限公司 Balloon catheter device for treating rebound disorder of eustachian tube

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