Vasodilator balloon catheter device with an air sphere to facilitate blood flow

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 having a hollow balloon for flowing blood. In particular, when applied to the technology in the medical field and the balloon catheter is used in medical treatment, the blood flow is continuously maintained, and even temporarily blocked, the blood backflows and blocks, and the blood flow is smoothed even during the treatment of patients, and the practical value is high. The present invention relates to a vasodilator balloon catheter device having a hollow balloon for flowing blood.

Background Art

[0002] A balloon catheter is a frequently seen instrument during surgery in the medical field. It is used to push open and expand a stenotic site in a blood vessel to promote blood flow. The structure of the balloon catheter is that a flexible catheter capable of injecting / expelling gas is attached to one end for injecting gas into the balloon. When actually used, the doctor installs the balloon without injecting gas at the desired position, and then injects gas according to the purpose of the surgery to expand the diseased part of the blood vessel lumen and perform a treatment / surgery to expand the stenotic site. After that, the gas is discharged from the balloon and the catheter is removed.

[0003] However, the balloon catheters mentioned above also carried risks when actually used. For example, in some patients, the blood vessel would return to its original state and narrow again even after being dilated. Therefore, dilation was often required multiple times, and ultimately, doctors commonly recommended implanting a stent, a high-tech technique, into the blood vessel to widen the occluded 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 fill and expand completely, filling the entire blood vessel and dilating it. At this time, the placement of the balloon stops blood flow, so the time available to dilate the heart's blood vessels with a balloon catheter during surgery is generally limited. If this time exceeds approximately 30 seconds, the myocardium may enter a state of temporary ischemia, and if it exceeds approximately 30 seconds, there is a risk of the body becoming critically ill due to myocardial ischemia, and in the worst case, arrhythmias may occur, ultimately increasing the risk of surgery.

[0004] In conventional medical fields, technologies have been developed to improve the aforementioned problems. For example, as shown in Figure 11, the cable tension structure 400 in the balloon catheter 300 has a small hole 500 formed therein to allow blood to flow. The diameter of this conventional small hole 500 varies depending on the location of the organ. For example, when a balloon catheter 300 used in the heart is applied surgically, the diameter of the small hole 500 in the cable tension structure 400 is designed to be only 0.014 cm. However, with such a small hole size, it is difficult to allow blood to flow through the blood vessels, and ultimately, the surface tension at the opening of the small hole 500 makes it difficult for blood to flow, resulting in the problem of blockage.

[0005] As mentioned above, conventional balloon catheters had many drawbacks and risks, so those skilled in the art needed a technology that would increase the time doctors could perform surgery, reduce risks to patients, prevent complications, and improve the safety of using balloon catheters when performing dilation surgery on patients. [Overview of the project] [Problems that the invention aims to solve]

[0006] The main objective of the present invention is to provide a vasodilator balloon catheter device having an air bulb that allows blood to flow, which improves upon the problem that conventional balloon catheters, when used in surgery, easily cause vascular occlusion and blood reflux that affect the function of other organs (e.g., myocardium), thereby increasing patient safety and preventing the occurrence of complications, especially in the case of the heart. [Means for solving the problem]

[0007] To solve the above problems, according to a first embodiment of the present invention, a vasodilator balloon catheter device having a medium-sized air balloon for flowing blood is provided, which is installed at the site of occlusion of a blood vessel, wherein 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 into the interior of at least one gas injection airbag, at least one blood conduit is formed from one end of the balloon portion to the other end, the gas injection tube injects gas into the balloon portion to inflate it, the occluded blood vessel is expanded by the expansion of the balloon portion, and gas is also injected into the balloon portion to open at least one of the blood conduits and communicate with the blood vessel, and the catheter device expands the blood vessel and allows blood in the blood vessel to flow continuously through at least one of the blood conduits. [Effects of the Invention]

[0008] The vasodilator balloon catheter device according to the present invention, which has an air balloon that allows blood to flow, is installed in the blood vessel to be treated, the balloon is moved to the position to be expanded (for example, a place where fat has accumulated on the inner wall of the blood vessel and blood flow has become less smooth), the balloon reaches the predetermined position, air is supplied by an external device (such as an air pump), and gas is injected into the balloon through a gas injection tube, causing the balloon to gradually expand and push open the blood vessel, and at the same time the balloon expands, at least one blood conduit within the balloon is gradually deployed until the balloon is completely filled, and both ends of at least one blood conduit are opened and in communication with the blood vessel, so that even during the catheter device installation process, blood flow is not obstructed and does not back up and become blocked, so that doctors are not made to make mistakes due to time constraints and patients are not made to experience tissue ischemia, even temporarily. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing a vasodilator balloon catheter device having a medium-sized air sphere for blood flow according to a first embodiment of the present invention. [Figure 2] This is a cross-sectional view along line II-II in Figure 1. [Figure 3] This is an explanatory diagram illustrating the application of the present invention to a blood vessel, in a state of use before gas has been injected. [Figure 4] This diagram illustrates the state of use after applying the present invention to a blood vessel and injecting gas. [Figure 5] This is a perspective view showing a vasodilator balloon catheter device having a blood-flowing air sphere according to a second embodiment of the present invention. [Figure 6] This is a cross-sectional view along line VI-VI in Figure 5. [Figure 7] This is a perspective view showing a vasodilator balloon catheter device having a blood-flowing air sphere according to a third embodiment of the present invention. [Figure 8] This is a cross-sectional view along line VIII-VIII in Figure 7. [Figure 9]This is a perspective view showing a vasodilator balloon catheter device having a blood-flowing air sphere according to a fourth embodiment of the present invention. [Figure 10] This is a cross-sectional view along line XX in Figure 9. [Figure 11] This is a cross-sectional view showing a conventional balloon catheter. [Modes for carrying out the invention]

[0010] Embodiments of the present invention will be described with reference to the attached drawings. In each drawing, components denoted by the same reference numerals have the same or similar configurations.

[0011] Refer to Figures 1 to 10. As shown in Figures 1 to 10, a vasodilator balloon catheter device having a blood-flowing air balloon according to one embodiment of the present invention can facilitate blood flow when placed in an occluded area of ​​a blood vessel 200 and expanded. The catheter device 100 includes a catheter section 10 and a balloon section 20. A conduit 101 is provided inside the catheter section 10. The balloon section 20 is provided at one end of the catheter section 10. The balloon section 20 includes at least one blood conduit 201 and at least one gas injection airbag 202 located inside the balloon section 20. The gas injection tube 30 is inserted into the conduit 101 and extends into the interior of the at least one gas injection airbag 202. The gas injection tube 30 is inserted and made to be tightly sealed at the connection point between the conduit 101 and the at least one gas injection airbag 202, thereby sealing the inside of the at least one gas injection airbag 202 and preventing gas leakage during the gas injection process. At least one blood conduit 201 is formed from one end to the other of the balloon portion 20. The gas injection tube 30 injects gas into at least one gas injection airbag 202 to inflate it, and as the at least one gas injection airbag 202 expands the occluded blood vessel, and as gas is injected into at least one gas injection airbag 202, at least one blood conduit 201 is formed in an open state and communicates with the blood vessel 200, and the catheter device 100 expands the blood vessel 200 and continuously flows the blood in the blood vessel 200 into at least one blood conduit 201.

[0012] The main technology of the present invention is described below. When a doctor determines that it is necessary to dilate a patient's blood vessel 200, first, the catheter device 100 is inserted into the blood vessel 200, and the balloon portion 20 is gradually moved to the site to be dilated. Then, the gas injection tube 30 is inserted from one end of the catheter portion 10 into the conduit 101, and after being inserted deeply to the balloon portion 20, it is stopped. Subsequently, gas is supplied from an external air supply device through the gas injection tube 30, and the gas is gradually injected into at least one gas injection airbag 202 of the balloon portion 20. As a result, at least one gas injection airbag 202 gradually inflates, and the site in the blood vessel 200 that requires treatment can be dilated. When at least one gas injection airbag 202 is inflated, at least one blood conduit 201 is gradually opened. Here, "opening" refers to the state in which the conduit is gradually opened. When at least one blood conduit 201 is fully opened, the inside of the blood vessel 200 becomes circulating, and the flow of blood in the blood vessel 200 can be maintained in a smooth state 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 was injected into a balloon catheter, and the balloon directly blocked the entire blood vessel, stopping blood flow. If this was slow and time-consuming, it could cause significant damage to organs, resulting in pain, ischemia, discomfort, infarction, arrhythmia, and thrombosis, among other serious problems. However, using the present invention, it is possible to perform treatment by dilating blood vessel 200, and even during treatment, blood flow within blood vessel 200 can be kept smooth, thus enabling safe treatment (see Figures 3 and 4).

[0013] Based on the above description, the present invention has many embodiments. As shown in Figures 3 and 4, air is supplied / inhaled through the gas injection tube 30 to inflate or deflate at least one gas injection airbag 202, and at least one air inlet 301 is provided at one end of the gas injection tube 30 located inside at least one gas injection airbag 202, so that gas is guided through the gas injection tube 30 and discharged from at least one air inlet 301 to fill at least one gas injection airbag 202. Inflating at least one gas injection airbag 202 pushes open the blood vessel 200 and extracts the gas from at least one gas injection airbag 202 through at least one air inlet 301. When at least one gas injection airbag 202 deflates, the catheter device 100 can be inserted into or withdrawn from the blood vessel 200.

[0014] (First Embodiment) In the first embodiment of the present invention, the cross-section of at least one blood conduit 201 of a vasodilator balloon catheter device having a blood-flowing air sphere is circular. The cross-section of at least one gas injection airbag 202 of the balloon portion 20 is annular, and the entire at least one gas injection airbag 202 is formed into a hollow tube, and the central blood conduit 201 can be used as a blood flow path. The outer gas injection airbag 202 inflates and expands when gas is injected, pushing open the blood vessel 200, thereby facilitating smooth blood flow (see Figures 1 to 4).

[0015] (Second Embodiment) Refer to FIGS. 5 and 6. As shown in FIGS. 5 and 6, the balloon catheter device with a hollow balloon for flowing blood according to the second embodiment of the present invention has a cross-section of at least one blood flow path 201 in a fan shape. At least one gas injection airbag 202 includes an outer ring filling region 2021 and an inner filling region 2022. The outer ring filling region 2021 communicates with the inner filling region 2022. At least one blood flow path 201 and the inner filling region 2022 are formed in a circular shape in combination. At least one blood flow path 201 occupies three-quarters of the area. The inner filling region 2022 occupies one-quarter of the area. Blood flows through the fan-shaped blood flow path 201 (the above ratios only show the aspects of this embodiment and are not limited to only those aspects. For example, the ratios can be each set to one-half).

[0016] (Third Embodiment) Refer to FIGS. 7 and 8. As shown in FIGS. 7 and 8, the balloon catheter device with a hollow balloon for flowing blood according to the third embodiment of the present invention has at least one gas injection airbag 202 of the balloon portion 20 divided into an outer peripheral filling region 2023, a central filling region 2024, and a plurality of filling connection ribs 2025. The outer peripheral filling region 2023 is formed in a ring shape. The central filling region 2024 is located at the inner center of the outer peripheral filling region 2023 and is formed in a hollow tubular shape. Each filling connection rib 2025 has one end connected to the outer peripheral side of the central filling region 2024 and the other end extending radially to connect to the inner wall surface of the outer peripheral filling region 2023. Each filling connection rib 2025 is formed in a hollow shape and is connected to the outer peripheral filling region 2023 and the central filling region 2024. The gas injection tube 30 extends into the central filling region 2024 to supply and inhale gas, filling the central filling region 2024, each filling connection rib 2025, and the outer peripheral filling region 2023 with gas. Also, in the region between the outer peripheral filling region 2023 and the central filling region 2024 separated by each filling connection rib 2025, a plurality of blood flow paths 201 (eight blood flow paths 201 are depicted in FIGS. 7 and 8) are formed. Each blood flow path 201 communicates with the blood vessel 200 respectively, and blood flows through a plurality of paths.

[0017] (Fourth Embodiment) Refer to Figures 9 and 10. As shown in Figures 9 and 10, in a fourth embodiment of the present invention, a vasodilator balloon catheter device having a blood-flowing air sphere, at least one gas-injection airbag 202 of the balloon portion 20 includes an inner ring-filled region 2026, an outer filling region 2027, and a plurality of filling contact ribs 2028. The entire inner ring-filled region 2026 and outer filling region 2027 are formed into a tubular body, with a hollow annular cross-section. The inner ring-filled region 2026 is located within the outer filling region 2027, forming concentric circles. A ring space 2029 is formed between the inner ring-filled region 2026 and the outer filling region 2027. The plurality of filling contact ribs 2028 are located between the ring space 2029, with one end connected to the inner ring-filled region 2026. Each filling contact rib 2028 extends radially toward the outer filling region 2027 and connects to the inner wall surface of the outer filling region 2027. Each filling contact rib 2028 is hollow and communicates with the inner ring filling region 2026 and the outer filling region 2027, respectively. When gas is supplied to the gas injection tube 30, the inner ring filling region 2026, the outer filling region 2027, and each filling contact rib 2028 are filled with gas. Each filling contact rib 2028 separates the ring spaces 2029 to form multiple lateral guide channels 2030 (six lateral guide channels 2030 are depicted in Figures 9 and 10). At least one blood conduit 201 is formed by being surrounded by the inner ring filling region 2026. At least one blood conduit 201 and each lateral guide channel 2030 communicate with the blood vessel 200, respectively, and blood in the blood vessel 200 can be maintained through at least one blood conduit 201 and each lateral guide channel 2030.

[0018] As can be understood from the above, the balloon catheter device with a hollow balloon for flowing blood according to the present invention can expand the diseased part of the blood vessel when treating the blood vessel 200, maintain the blood flow in the blood vessel 200 in a smooth state, and supply blood to the organs and various organs of the body. Therefore, conventionally, after dilation, the blood flow is completely blocked, and various risks such as peripheral vascular perfusion, blood vessel blockage, imbalance of intravascular pressure, infarction, arrhythmia, and thrombosis are prevented. When the present invention is applied to various forms of the gas injection airbag 202, the blood vessel 200 can be expanded without hindering the blood flow. Therefore, the doctor can perform a detailed examination without being restricted by time. For the patient, there is no need to perform coronary artery bypass grafting (CABG) surgery, and the increase in wounds can be prevented.

Explanation of Reference Numerals

[0019] (The present invention) 10 Catheter part 20 Balloon part 30 Gas injection tube 100 Catheter device 101 Conduit 200 Blood vessel 201 Blood guiding path 202 Gas injection airbag 301 Air supply port 2021 Outer ring filling area 2022 Inner filling area 2023 Peripheral filling area 2024 Central filling area 2025 Filling connection rib 2026 Inner ring filling area 2027 External filling area 2028 Filling abutting rib 2029 Ring space 2030 Side guiding flow path<0000​​​​​​

Claims

1. A vasodilator balloon catheter device having a medium-sized air bulb to allow blood to flow, which is placed at the site of occlusion 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 extended into the interior of at least one gas injection airbag, and at least one blood conduit is formed from one end to the other of the balloon portion. The balloon portion includes an inner ring filling region, an outer filling region, and a plurality of filling contact ribs. The inner ring-filled region is located within the outer ring-filled region, forming a ring space between the inner ring-filled region and the outer ring-filled region, and the plurality of filling contact ribs are located between the ring spaces, with one end connected to the inner ring-filled region and the other end extending radially toward the outer ring-filled region and connecting to the inner wall surface of the outer ring-filled region, each filling contact rib communicating with the inner ring-filled region and the outer ring-filled region, each filling contact rib separating the ring spaces to form a plurality of lateral guide channels, at least one blood conduit is formed by being surrounded by the inner ring-filled region, and at least one blood conduit and each of the lateral guide channels communicate with a blood vessel. A vasodilator balloon catheter device having a medium air sphere that causes blood to flow, characterized in that the gas injection tube inflates the balloon portion by injecting gas into it, expands the occluded blood vessel by the expansion of the balloon portion, and opens at least one of the blood drainage channels by injecting gas into the balloon portion to communicate with the blood vessel, and the catheter device expands the blood vessel to allow blood in the blood vessel to flow continuously through at least one of the blood drainage channels.

2. Inside the balloon section, at least one of the gas-injecting airbags is provided. The vasodilator balloon catheter device having a blood-flowing air sphere, as described in claim 1, is characterized in that at least one air inlet is provided at one end of the gas injection tube located inside at least one of the gas injection airbags, the gas is guided by the gas injection tube and discharged from at least one of the air inlets to fill at least one of the gas injection airbags, inflating at least one of the gas injection airbags to dilate blood vessels, gas is extracted from at least one of the gas injection airbags via at least one of the air inlets, and when at least one of the gas injection airbags deflates, the catheter device can be inserted into or removed from the blood vessel.

3. At least one of the blood conduits has a circular cross-section. The vasodilator balloon catheter device having a medium air sphere for blood flow according to claim 1, characterized in that the cross-section of the balloon portion is annular.

Images