CN113425992A

CN113425992A - Balloon catheter

Info

Publication number: CN113425992A
Application number: CN202110661215.8A
Authority: CN
Inventors: 郑贻实; 陈炜尧; 李耕源; 翁承羲; 杨东翰; 黄俞智
Original assignee: Isoman Zhongshan Medical Equipment Co ltd
Current assignee: Isoman Zhongshan Medical Equipment Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-09-24

Abstract

The embodiment of the application discloses a balloon catheter, which is provided with an annular catheter wall, wherein the catheter wall deforms when subjected to a first external force; the deformed pipe wall is provided with a sunken part, a first folding part and a second folding part which are positioned at two ends of the sunken part, and an exposure part which is stacked on the first folding part and the second folding part; the concave part is integrally connected with a first end part of the first folding part and a first end part of the second folding part respectively, and the exposed part is integrally connected with a second end part of the first folding part and a second end part of the second folding part respectively; and when the deformed pipe wall is subjected to a second external force, the deformation is recovered. The symmetrical structure of the embodiment of the invention makes the balloon catheter recover to the original state more easily when being reduced and expanded, and the balloon catheter is more easily placed into a human body and safer due to larger deformation.

Description

Balloon catheter

Technical Field

The present embodiments relate to a balloon catheter that is inserted into a stenosed portion or an occluded portion formed in a blood vessel, a bile duct, a pancreatic duct, or the like, and that ensures the flow of blood, bile (biliary fluid), pancreatic fluid, or the like by dilating the stenosed portion or the occluded portion; particularly for the improvement of balloon folding structures of medical devices with non-smooth surfaces to reduce the damage of the balloon itself in the catheter and the damage of the catheter or the blood vessel.

Background

The prevalence of cardiovascular diseases is caused by western diet and living habits, hypertension, smoking, diabetes, lack of exercise, obesity, hyperlipidemia, poor dietary habits, excessive drinking, and other factors. The most prominent cause of cardiovascular disease is vascular occlusion, while vascular sclerosis is the leading cause. The cardiovascular disease progresses from the normal blood vessels, may cause atherosclerosis of coronary arteries due to large amounts of fat, or other reasons, and slowly progresses to stenosis of the blood vessels and even finally to vessel occlusion. The treatment method is taking medicine or balloon dilatation and stent. Similarly, if a stenosis or an occlusion is formed in a blood vessel, a bile duct, a pancreatic duct, or the like, the flow of blood, bile (bile fluid), pancreatic fluid, or the like is deteriorated. As a method for treating the aforementioned stenosed portion or occluded portion, a treatment method using a balloon catheter is widely performed.

With the rising of consciousness of the national people about the medical quality, a solution is actively sought for the poor prognosis and the inconvenience in life caused by a plurality of interventional treatments. The interventional therapy is that under the guidance and monitoring of medical imaging equipment, a plastic catheter sheath is placed at the radial artery of the wrist or from the femoral artery of the groin of a patient, and the plastic catheter sheath is used for placing a guiding catheter at the entrance of a blood vessel to be dilated. Then the saccule ball catheter passes through the coronary artery angiopathy stenosis part along the guide wire, the saccule is pressurized and expanded, so that the blocked fatty porridge-like tumor is extruded to the inner wall of the blood vessel to increase the diameter of the blood vessel, and further promote the smooth blood flow.

Such treatment has the advantages of small wound, good prognosis, and adverse events. The increased volume of the balloon to be withdrawn after filling, combined with the consistency of the contrast agent and the kinked catheter, can cause pain to the patient in addition to difficulty in removal. The pain of the patient in the operation process is increased, the poor prognosis is caused, and complications are easy to occur.

Disclosure of Invention

In view of the above, the present invention provides a balloon catheter, which can be deformed to be placed in a coronary artery stenosis, and can expand and support the stenosis, and be deformed to reduce the volume when being taken out.

According to a first aspect of the present application, there is provided a balloon catheter having an annular tube wall that deforms when subjected to a first external force; the deformed pipe wall is provided with a sunken part, a first folding part and a second folding part which are positioned at two ends of the sunken part, and an exposure part which is stacked on the first folding part and the second folding part; the concave part is integrally connected with a first end part of the first folding part and a first end part of the second folding part respectively, and the exposed part is integrally connected with a second end part of the first folding part and a second end part of the second folding part respectively;

and when the deformed pipe wall is subjected to a second external force, the deformation is recovered.

Preferably, the material of the tube wall comprises:

latex, nylon, polyethylene terephthalate, or other flexible foldable single or hybrid materials.

Preferably, the thickness of the tube wall is 0.02mm to 0.09 mm.

Preferably, a protruding structure is arranged on the pipe wall between the first folding part and the second folding part on the concave part;

the protruding structures are exposed between the exposed parts.

Preferably, the protrusion mechanism is also loaded with a medicine.

Preferably, the number of the exposed portions is two or more.

The utility model provides a sacculus pipe, can produce deformation when the pipe wall receives first external force, the pipe wall after the deformation is formed with the depressed part through folding, be located the first folding portion and the second folding portion at depressed part both ends, range upon range of the portion of revealing on first folding portion and second folding portion, this kind of structure through folding deformation, can reduce the volume greatly, and resume deformation when receiving second external force, the average symmetry of structure of folding deformation lies in the pipe outside, balloon surface mechanism returns incompletely after having avoided expanding, reduce because of the uneven blood vessel that causes of vasodilatation produces the intermediate layer or the risk of bleeding, the security has been promoted. The folding structure design can ensure that after retraction, the probability of damage to the catheter or the human body pipeline is reduced, and the balloon catheter of the embodiment of the application is safer to apply.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a left side view schematic illustration of a balloon catheter according to an embodiment of the present application after being collapsed;

fig. 2 is a schematic view of the overall structure of a balloon catheter according to an embodiment of the present application after being folded and contracted;

fig. 3 is a schematic structural view of a balloon catheter according to an embodiment of the present application in a restored state.

Detailed Description

The essence of the technical solution of the embodiments of the present application is explained in detail below with reference to the accompanying drawings.

Fig. 1 is a left side view schematic diagram of a balloon catheter according to an embodiment of the present disclosure after being folded and contracted, and fig. 2 is a schematic diagram of an overall structure of the balloon catheter according to the embodiment of the present disclosure after being folded and contracted, where as shown in fig. 1 and fig. 2, the balloon catheter according to the embodiment of the present disclosure is generally in a circular tube shape and has an annular tube wall, and in the embodiment of the present disclosure, the overall cross section of the annular tube wall may be in a perfect circle shape, an oval shape, a polygon shape, or other annular closed structures. Considering that the balloon catheter needs to be placed in the tissues of the human body such as blood vessels, a circular or elliptical structure is preferable. When the tube wall of the balloon catheter of the embodiment of the application is subjected to a first external force, the balloon catheter deforms; the first external force can be extrusion force acting on the outside of the pipe wall or traction force acting in the pipe wall towards the circle center direction. As shown in fig. 1 and fig. 2, the deformed tube wall of the embodiment of the present application has a concave portion 13, a first folding portion 11 and a second folding portion 12 located at two ends of the concave portion 13, and an exposed portion 10 stacked on the first folding portion 11 and the second folding portion 12; the concave portion 13 is integrally connected to a first end of the first folding portion 11 and a first end of the second folding portion 12, respectively, and the exposed portion 10 is integrally connected to a second end of the first folding portion 11 and a second end of the second folding portion 12, respectively;

The balloon catheter of the embodiment of the present invention is manufactured in the same way as a general balloon, and after the initial formation of the balloon, non-smooth surface mechanisms such as the protrusions 14 may be added or not added to the outer surface of the balloon catheter as required, and after the formation of the non-smooth surface mechanisms, as shown in fig. 2 and 3, the non-smooth surface mechanisms may be used to increase the tension of the balloon or to carry drugs, and the non-smooth surface mechanisms may be integrally formed with the balloon, or may be physically or chemically adhered to the outer surface of the balloon catheter to form the balloon.

As shown in fig. 1 and 2, the non-smooth surface mechanism according to the embodiment of the present invention generates a first folded portion 11 and a second folded portion 12 facing each other in pairs as a folding center during deformation, in which a recessed portion 13, the first folded portion 11, the second folded portion 12, and an exposed portion 10 are stacked to form a three-layer structure. After the three layers of tube wall circumferences of the balloon catheter are folded, the peripheral length is greatly reduced, and the whole volume of the balloon catheter is also sharply reduced, so that the balloon catheter after being reduced is easier to place in a human blood vessel.

The first folding part 11 and the second folding part 12 are folded in a wavy stack manner, so that the outer diameter of the folded balloon catheter can be reduced.

After the balloon catheter of the embodiment of the application is folded, the distances between the exposed part 10 and the inner tube are equal, the number of the first folding parts 11 and the second folding parts 12 can be adjusted according to the size of the balloon catheter, the folding modes of the first folding parts 11 and the second folding parts 12 are more average, the balloon catheter after expansion and retraction can be completely recovered, the volume variable is reduced, and the probability of catheter or blood vessel damage can be reduced.

In order to meet the folding requirements of the tube wall of the balloon catheter, the material of the tube wall can be latex, nylon, polyethylene terephthalate and the like, and other flexible foldable single materials or mixed materials can also be adopted.

In order to meet the use requirement of the operation, the thickness of the tube wall of the balloon catheter of the embodiment of the application is 0.02mm to 0.09 mm.

As shown in fig. 2 and 3, the concave portion 10 of the embodiment of the present application is provided with a protruding structure 14 on the tube wall between the first folding portion 11 and the second folding portion 12; the protruding structures 14 are exposed between the exposed portions.

The protruding structure 14 of this application embodiment can carry the medicine, because of being protruding structure 14 of sacculus pipe after folding is located between two exhibition portions 10, can be protected by exhibition portion 10 to the sacculus pipe of this folding mode design more can effectively reduce the non-target of medicine and run off.

In the embodiment of the present application, the number of the exposed portions 10 is two or more. Although three exposed portions 10 are illustrated in the figure, the number of exposed portions 10 may be 2, 4, 5, or the like, and the number of first folded portions 11 and second folded portions 12 is 2 times the number of exposed portions 10.

In the embodiment of the present application, according to parameters such as flexibility of material of the tube wall of the balloon catheter and the thickness of the tube wall, the number of the first folded portion 11 and the second folded portion 12 that are stacked may be increased, and the number of the first folded portion 11 and the second folded portion 12 that are stacked is increased, so that the outer circumferential length after the balloon catheter is folded is decreased, and the volume of the balloon catheter is decreased.

The utility model provides a sacculus pipe structure, for single direction folding structure, its bilateral symmetry and folding angle are unanimous, can not cause the surperficial non-smooth mechanism of sacculus pipe to produce the skew after the sacculus pipe expands, can reply original configuration completely after making the sacculus pipe expand, can not produce crooked, makes the surperficial atress of sacculus pipe average, has avoided the uneven probability that takes place of atress. Therefore, the use is safer, the contraction ratio is better, and the disposable belt is easier to be put into a human body.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are only illustrative, for example, the division of the unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication between the components shown or discussed may be through some interfaces, and the indirect coupling or communication between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The balloon catheter is characterized by comprising an annular catheter wall, wherein the catheter wall deforms under the action of a first external force; the deformed pipe wall is provided with a sunken part, a first folding part and a second folding part which are positioned at two ends of the sunken part, and an exposure part which is stacked on the first folding part and the second folding part; the concave part is integrally connected with a first end part of the first folding part and a first end part of the second folding part respectively, and the exposed part is integrally connected with a second end part of the first folding part and a second end part of the second folding part respectively;

2. A balloon catheter according to claim 1, wherein the material of the tube wall comprises:

3. A balloon catheter according to claim 1, wherein the thickness of the tube wall is 0.02mm to 0.09 mm.

4. A balloon catheter according to claim 1, wherein a protruding structure is provided on the wall of the recess between the first and second folds;

the protruding structures are exposed between the exposed parts.

5. A balloon catheter according to claim 1, wherein said protrusion means is further loaded with a drug.

6. The balloon catheter according to claim 1, wherein the exposed portions are two or more.