Vascular dilation balloon catheter device having hollow air balloon for flowing blood

Abstract

To provide a vascular dilation balloon catheter device having a hollow air balloon for flowing blood, capable of making blood flow smooth even during treatment of a patient.SOLUTION: A catheter device 100 includes a catheter portion 10 and a balloon portion 20. A conduit 101 is provided inside the catheter portion. The balloon portion is provided at one end of the catheter portion. A gas injection tube is inserted inside the conduit and extends to an interior of at least one gas injection air bag 202, and at least one blood flow path 201 is formed from one end to another end of the balloon portion. The gas injection tube injects gas into the balloon portion to inflate the balloon portion, and the balloon portion expands a blocked blood vessel by expansion. The gas injection tube injects gas into the balloon portion to open at least one blood flow path and bring it into communication with the blood vessel. By expanding the blood vessel using the catheter device, blood inside the blood vessel is continuously circulated through at least one blood flow path.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vasodilator balloon catheter device with a hollow air sphere that allows blood to flow, and in particular to a vasodilator balloon catheter device with a hollow air sphere that allows blood to flow. This device is highly practical and has application in the medical field, allowing blood to continue flowing even when the balloon catheter is used for medical treatment, preventing backflow and blockages that could occur even if the flow is temporarily blocked, thereby ensuring smooth blood flow even during patient treatment. [Background technology]

[0002] Balloon catheters are a common medical device used during surgery to expand narrowed areas in blood vessels and promote blood flow. A balloon catheter is constructed by attaching a flexible catheter that can inject and expel gas to one end of the balloon, which is used to inject gas into the balloon. In actual use, doctors place the uninjected balloon at the desired location, inject gas according to the purpose of the surgery, expand the affected area in the blood vessel lumen, and perform the treatment / surgery to expand the narrowed area. After that, the gas is expelled from the balloon and the catheter is removed.

[0003] However, the balloon catheters described above pose risks when actually used. For example, in some patients, dilating blood vessels would sometimes result in the vessels returning to their original state and becoming narrowed again. This required multiple dilations, ultimately leading doctors to recommend a high-tech stent implanted into the blood vessel to expand the blocked or narrowed area and prevent recurrence. However, each time a balloon catheter is used, especially when treating blood vessels inside the heart, gas is injected into the balloon, causing it to expand and fill the entire blood vessel. During this process, the installed balloon blocks blood flow. This generally limits the time during which cardiac blood vessels can be dilated with a balloon catheter during surgery. If the time exceeds approximately 30 seconds, the myocardium may enter a state of temporary ischemia. If the time exceeds approximately 30 seconds, the myocardium may enter a critical state due to myocardial ischemia. In the worst case, arrhythmia may occur, ultimately increasing the risk of surgery.

[0004] In the medical field, technologies have been developed to address the above-mentioned problems. For example, as shown in FIG. 11, a small hole 500 for blood flow is formed in the cable tensioning structure 400 of a balloon catheter 300. The diameter of this conventional small hole 500 varies depending on the location of the organ. For example, when a balloon catheter 300 is used in surgery for the heart, the small hole 500 of the cable tensioning structure 400 is designed to have a diameter of only 0.014 cm. However, with such a small hole diameter, it is difficult for blood to flow through the blood vessels. Ultimately, the surface tension at the opening of the small hole 500 makes it difficult to flow, ultimately resulting in blockage.

[0005] As described above, the use of conventional balloon catheters has many drawbacks and risks, and those skilled in the art have sought a technique to increase the amount of time available for doctors to perform surgery, reduce patient risk and prevent complications, and improve safety when using balloon catheters to perform dilatation procedures on patients. Summary of the Invention [Problem to be solved by the invention]

[0006] The main object of the present invention is to provide a vascular dilation balloon catheter device with a hollow air balloon that allows blood to flow, which allows doctors to spend more time performing surgery on the affected area of ​​a blood vessel when using a balloon catheter to perform dilation procedures in surgery, and eliminates the risk of blood clogging or backflow affecting the function of other organs (e.g., the myocardium), thereby improving patient safety and preventing complications, particularly in the case of the heart.It also solves the problems that, when conventional balloon catheters are used in surgery, blood vessel blockage and backflow of blood easily occur, which adversely affect the function of peripheral organ tissues. [Means for solving the problem]

[0007] In order to solve the above problems, according to a first aspect of the present invention, there is provided a blood vessel dilation balloon catheter device having a medium-sized air balloon for circulating blood, which is to be placed at an obstructed site of a blood vessel, the catheter device comprising a catheter section and a balloon section, a conduit provided inside the catheter section, the balloon section provided at one end of the catheter section, a gas injection tube inserted into the conduit and extending to the inside of at least one gas-injected air bag, at least one blood conducting channel formed from one end of the balloon section to the other, the gas injection tube injecting gas into the balloon section to expand it, thereby expanding the obstructed blood vessel and injecting gas into the balloon section to open at least one of the blood conducting channels to communicate with the blood vessel, the catheter device dilating the blood vessel and allowing blood in the blood vessel to continuously circulate through at least one of the blood conducting channels. [Effects of the Invention]

[0008] The blood vessel dilation balloon catheter device according to the present invention, which has an air balloon for allowing blood flow, is placed in the blood vessel to be treated, and the balloon portion is moved to the dilation position (for example, a position where fat has accumulated on the inner wall of the blood vessel and blood flow has become sluggish). Once the balloon portion reaches the desired position, air is supplied using an external device (such as an air pump) and gas is injected into the balloon portion through the gas injection tube. The balloon portion gradually expands, pushing open the blood vessel. At the same time, the balloon portion expands, and at least one blood conducting channel within the balloon portion gradually expands until the balloon portion is completely filled, leaving both ends of the at least one blood conducting channel open and communicating with the blood vessel. This prevents backflow and blockage of blood flow during the placement of the catheter device, thereby preventing doctors from making mistakes due to concerns about time and preventing patients from experiencing even temporary tissue ischemia. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing a vasodilator balloon catheter device having an air balloon for causing blood flow according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 1 is an explanatory diagram showing a state in which the present invention is applied to a blood vessel and gas has not yet been injected. [Figure 4] FIG. 10 is an explanatory diagram of the state of use after the present invention is applied to a blood vessel and gas is injected. [Figure 5] FIG. 10 is a perspective view showing a vasodilator balloon catheter device having an air balloon for causing blood flow according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. [Figure 7] FIG. 10 is a perspective view showing a vasodilatation balloon catheter device having an air balloon for causing blood flow according to a third embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7. [Figure 9]FIG. 10 is a perspective view showing a vasodilator balloon catheter device having an air balloon for causing blood flow according to a fourth embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view taken along line XX in FIG. 9. [Figure 11] FIG. 1 is a cross-sectional view showing a conventional balloon catheter. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings, in which the same reference numerals denote the same or similar components.

[0011] 1 to 10. As shown in FIGS. 1 to 10, a blood vessel dilation balloon catheter device having a blood flow-inducing air balloon according to one embodiment of the present invention can be placed at a blocked portion of a blood vessel 200 and expand it to allow smooth blood flow. The catheter device 100 includes a catheter portion 10 and a balloon portion 20. A conduit 101 is provided inside the catheter portion 10. The balloon portion 20 is provided at one end of the catheter portion 10. The balloon portion 20 includes at least one blood conducting channel 201 and at least one gas-inflation airbag 202 located inside the balloon portion 20. A gas-inflation tube 30 is inserted into the conduit 101 and extends to the interior of the at least one gas-inflation airbag 202. The gas-inflation tube 30 is inserted and tightly attached to the connection between the conduit 101 and the at least one gas-inflation airbag 202, sealing the interior of the at least one gas-inflation airbag 202 and preventing gas leakage during gas injection. At least one blood conducting channel 201 is formed from one end to the other end of the balloon portion 20. The gas injection tube 30 inflates at least one gas injection air bag 202 by injecting gas into the at least one gas injection air bag 202, which inflates and dilates the blocked blood vessel, and when gas is injected into the at least one gas injection air bag 202, at least one blood conducting channel 201 is opened and communicates with the blood vessel 200, and the catheter device 100 dilates the blood vessel 200 and continuously circulates blood within the blood vessel 200 through the at least one blood conducting channel 201.

[0012] The main technology of the present invention is described below. When a doctor determines that a patient's blood vessel 200 requires dilation, the doctor first inserts the catheter device 100 into the blood vessel 200 and gradually moves the balloon portion 20 to the area to be dilated. The doctor then inserts the gas injection tube 30 from one end of the catheter portion 10 into the conduit 101, inserting it deep enough to reach the balloon portion 20 and then stopping the insertion. An external gas supply device then supplies gas through the gas injection tube 30, gradually injecting gas into at least one gas injection airbag 202 in the balloon portion 20. This gradually inflates the at least one gas injection airbag 202, dilating the area of ​​the blood vessel 200 requiring treatment. Inflating the at least one gas injection airbag 202 gradually deploys at least one blood conducting channel 201. Here, "deployment" refers to the gradual opening of a channel. When the at least one blood conducting channel 201 is fully deployed, blood flow within the blood vessel 200 becomes possible, maintaining smooth blood flow within the blood vessel 200 even during treatment. This structure is important for organs (especially the heart), as it eliminates the need to stop blood flow even for a short time, stabilizing blood flow and ensuring a normal blood supply to all organs. In conventional techniques, gas is injected into a balloon catheter, and the balloon directly blocks the entire blood vessel, stopping blood flow. This slow process can cause significant damage to the organ, resulting in pain, ischemic conditions, discomfort, infarction, arrhythmia, thrombosis, and other serious problems. However, the present invention not only allows for treatment by dilating the blood vessel 200, but also maintains smooth blood flow within the blood vessel 200 even during treatment, allowing for safe treatment (see Figures 3 and 4).

[0013] Based on the above description, the present invention has various embodiments. As shown in Figures 3 and 4, air is supplied / sucked through the gas injection tube 30 to inflate or deflate at least one gas-injected air bag 202. At one end of the gas injection tube 30 located inside the at least one gas-injected air bag 202, at least one air outlet 301 is provided. Gas is guided through the gas injection tube 30 and discharged through the at least one air outlet 301 to fill the at least one gas-injected air bag 202. The at least one gas-injected air bag 202 is inflated to push open the blood vessel 200, and gas inside the at least one gas-injected air bag 202 is extracted through the at least one air outlet 301. When the at least one gas-injected air bag 202 is deflated, the catheter device 100 can be inserted into or removed from the blood vessel 200.

[0014] (First embodiment) In the blood vessel dilation balloon catheter device having an air balloon for blood flow according to the first embodiment of the present invention, at least one blood conducting channel 201 has a circular cross section. At least one gas-injected air bag 202 in the balloon section 20 has an annular cross section, and the entire at least one gas-injected air bag 202 is formed as a hollow tube, with the central blood conducting channel 201 being usable as a blood flow path. When gas is injected into the peripheral gas-injected air bag 202, it expands and widens the blood vessel 200, allowing for smooth blood flow (see FIGS. 1 to 4).

[0015] (Second embodiment) 5 and 6. As shown in FIGS. 5 and 6, in a blood vessel dilation balloon catheter device having an air balloon for blood flow according to a second embodiment of the present invention, at least one blood conducting channel 201 has a sector-shaped cross section. At least one gas-injected air bag 202 includes an outer annular filling region 2021 and an inner filling region 2022. The outer annular filling region 2021 communicates with the inner filling region 2022. The at least one blood conducting channel 201 and the inner filling region 2022 combine to form a circle. The at least one blood conducting channel 201 occupies three-quarters of the area. The inner filling region 2022 occupies one-quarter of the area. Blood flows through the sector-shaped blood conducting channel 201 (the above-mentioned ratios are merely illustrative of this embodiment and are not limited to this embodiment; for example, the respective ratios may be halved).

[0016] (Third embodiment) 7 and 8. As shown in FIGS. 7 and 8, in a blood vessel dilation balloon catheter device having an air balloon for blood flow according to a third embodiment of the present invention, at least one gas-inflated air bag 202 of the balloon portion 20 is divided into an outer circumferential filling region 2023, a central filling region 2024, and a plurality of filling connection ribs 2025. The outer circumferential filling region 2023 is formed in a ring shape. The central filling region 2024 is located at the center of the inner circumferential filling region 2023 and formed in a hollow tubular shape. One end of each filling connection rib 2025 is connected to the outer circumferential side of the central filling region 2024 and the other end extends radially to connect to the inner wall surface of the outer circumferential filling region 2023. Each filling connection rib 2025 is formed in a hollow shape and connects the outer circumferential filling region 2023 and the central filling region 2024. The gas injection tube 30 extends into the central filling region 2024 and supplies and sucks air, filling the central filling region 2024, each filling connection rib 2025, and the peripheral filling region 2023 with gas. In addition, a plurality of blood conducting channels 201 (eight blood conducting channels 201 are depicted in FIGS. 7 and 8) are formed in the region between the peripheral filling region 2023 and the central filling region 2024, which are separated by each filling connection rib 2025. Each blood conducting channel 201 communicates with a blood vessel 200, and blood flows through a plurality of paths.

[0017] (Fourth embodiment) 9 and 10. As shown in FIGS. 9 and 10, in a blood vessel dilation balloon catheter device with a blood vessel balloon for allowing blood to flow according to a fourth embodiment of the present invention, at least one gas-inflated air bag 202 of the balloon portion 20 includes an inner annular filling region 2026, an outer filling region 2027, and a plurality of filling abutment ribs 2028. The inner annular filling region 2026 and the outer filling region 2027 are collectively formed into a tubular body, and the cross section thereof is formed into a hollow ring shape. The inner annular filling region 2026 is located within the outer filling region 2027 and forms concentric circles. A ring space 2029 is formed between the inner annular filling region 2026 and the outer filling region 2027. A plurality of filling abutment ribs 2028 are located between the ring spaces 2029, and one end of each filling abutment rib 2028 is connected to the inner annular filling region 2026. Each filling abutment rib 2028 extends radially toward the outer filling region 2027 and is connected to the inner wall surface of the outer filling region 2027. Each filling abutment rib 2028 is hollow and communicates with the inner annular filling region 2026 and the outer filling region 2027, respectively. When gas is supplied to the gas injection tube 30, the inner annular filling region 2026, the outer filling region 2027, and each filling abutment rib 2028 are filled with gas. Each filling abutment rib 2028 separates the ring spaces 2029 to form a plurality of side guide channels 2030 (six side guide channels 2030 are depicted in FIGS. 9 and 10 ). At least one blood guide channel 201 is formed by being surrounded by the inner annular filling region 2026. The at least one blood guide channel 201 and each side guide channel 2030 are each communicated with the blood vessel 200, so that blood in the blood vessel 200 can be continuously supplied via the at least one blood guide channel 201 and each side guide channel 2030.

[0018] As can be seen from the above, the blood vessel dilation balloon catheter device having a blood flow-inducing air balloon according to the present invention can dilate the affected part of the blood vessel when treating the blood vessel 200, and can also maintain smooth blood flow within the blood vessel 200, thereby supplying blood to the various organs of the body. This prevents the conventional method of completely blocking blood flow after dilation, which can lead to various risks such as peripheral vascular perfusion, vascular clogging, intravascular pressure imbalance, infarction, arrhythmia, and thrombus formation. When the present invention is applied to various forms of gas-infused airbags 202, it can dilate the blood vessel 200 without interfering with blood flow, allowing doctors to perform detailed examinations without time constraints, and for patients, it eliminates the need for coronary artery bypass grafting (CABG) surgery and prevents additional wounds. [Explanation of symbols]

[0019] (The present invention) 10. Catheter section 20 Balloon section 30 Gas injection tube 100 Catheter device 101 Conduit 200 blood vessels 201 Blood channel 202 Gas-injected airbag 301 Air outlet 2021 Outer ring filling area 2022 Internal filling area 2023 Peripheral filling area 2024 Center filling area 2025 Filling Connection Rib 2026 Inner ring filling area 2027 External filling area 2028 Filled abutment rib 2029 Ring Space 2030 Side guide channel (Prior Art) 300 Balloon Catheter 400 Cable tension structure 500 small holes

Claims

1. A vasodilator balloon catheter device having an air balloon for allowing blood to flow, which is placed at an occluded site of a blood vessel, The catheter device includes a catheter portion and a balloon portion; a conduit is provided inside the catheter portion, the balloon portion is provided at one end of the catheter portion, a gas injection tube is inserted into the conduit and extends to the inside of at least one gas injection airbag, and at least one blood conducting channel is formed from one end to the other end of the balloon portion; a blood vessel dilation balloon catheter device having an air balloon for causing blood to flow, characterized in that the gas injection tube injects gas into the balloon portion to expand it, thereby expanding the blocked blood vessel and injecting gas into the balloon portion to open at least one of the blood conducting channels to communicate with the blood vessel, thereby expanding the blood vessel using the catheter device and continuously circulating blood in the blood vessel through at least one of the blood conducting channels.

2. At least one gas-injected air bag is provided inside the balloon portion, 2. A blood vessel dilation balloon catheter device with a blood balloon for circulating blood, as described in claim 1, characterized in that at least one air outlet is provided at one end of the gas injection tube located inside at least one of the gas-injected air bags, and gas is introduced through the gas injection tube and discharged from the at least one air outlet to fill at least one of the gas-injected air bags, thereby inflating the at least one gas-injected air bag and dilating the blood vessel, and gas is extracted from the at least one gas-injected air bag through the at least one air outlet, and the catheter device can be inserted and removed from the blood vessel when the at least one gas-injected air bag is deflated.

3. At least one of the blood conducting channels has a circular cross section; 2. The blood vessel dilation balloon catheter device having an air balloon for allowing blood to flow as claimed in claim 1, wherein the cross section of the balloon portion is annular.

4. At least one of the blood conducting channels has a sector-shaped cross section; the balloon portion includes an outer annular filling region and an inner filling region; 2. The blood vessel dilation balloon catheter device having a hollow air balloon for allowing blood to flow as claimed in claim 1, wherein the outer annular filling region is in communication with the inner filling region, and the at least one blood conducting channel and the inner filling region form a circular shape, the at least one blood conducting channel occupying three-quarters of the area, and the inner filling region occupying one-quarter of the area.

5. the balloon portion has a peripheral filling region, a central filling region, and a plurality of filling connection ribs; 2. The blood vessel dilation balloon catheter device according to claim 1, wherein the central filling area is located at the center of the outer peripheral filling area, each of the filling connection ribs has one end connected to the outer peripheral side of the central filling area and the other end extending radially to connect to the inner wall surface of the outer peripheral filling area, each of the filling connection ribs communicates with the outer peripheral filling area and the central filling area, the gas injection tube extends into the central filling area for supplying and suctioning air, and a plurality of blood conducting channels are formed in the area between the outer peripheral filling area and the central filling area separated by each of the filling connection ribs, and each of the blood conducting channels communicates with a blood vessel.

6. the balloon portion includes an inner annular filling region, an outer filling region, and a plurality of filling abutment ribs; 2. The blood vessel dilation balloon catheter device with a hollow balloon for blood flow according to claim 1, wherein the inner annular filling region is located within the outer filling region, and a ring space is formed between the inner annular filling region and the outer filling region. The plurality of filling abutment ribs are located between the ring spaces, and one end is connected to the inner annular filling region and the other end extends radially toward the outer filling region and connects to the inner wall surface of the outer filling region. Each of the filling abutment ribs communicates with the inner annular filling region and the outer filling region. Each of the filling abutment ribs separates the ring spaces to form a plurality of side guide channels. At least one blood guide channel is surrounded by the inner annular filling region, and the at least one blood guide channel and each of the side guide channels communicate with a blood vessel.

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