Reboa catheter

Abstract

The present invention provides a reboa catheter. The reboa catheter according to an embodiment comprises: a catheter tube including a tip portion and a branch portion; and a balloon portion which is formed between the tip portion and the branch portion and inflates in a blood vessel to close at least a portion of the blood vessel at a target point, wherein the tip portion is formed at a front end of the catheter tube and inserted into a blood vessel, the branch portion is formed at an end of the catheter tube and branched, and at least one blood pressure measurement hole configured to measure blood pressure in the blood vessel may be formed in the catheter tube.

Description

Levoa catheter

[0001] The present invention relates to a Levoa catheter, and more particularly, to a Levoa catheter capable of occluding at least a portion of a blood vessel.

[0002] Cross-reference to related applications

[0003] This application claims priority to Republic of Korea Patent Application No. 10-2024-0039900, filed March 22, 2024, the entire contents of which are incorporated herein by reference.

[0004] In patients suspected of bleeding due to various factors such as trauma, it can be difficult to easily identify the source of the bleeding. Furthermore, even if the source of the bleeding is identified, it is often difficult to control the bleeding if the bleeding is located inside the patient's body. Typically, when the bleeding is located inside the patient's body, a Resuscitative Endovascular Balloon Occlusion of the Aorta (Reboa catheter) is inserted into the patient's blood vessel (e.g., the femoral artery) and advanced to the site of the bleeding, inflating the balloon. Once the balloon is inflated, it blocks the blood flow downstream of the balloon, achieving hemostasis.

[0005] However, this treatment method has a problem in that it cannot specifically confirm whether the blood vessel is occluded after the balloon is inflated. Specifically, it cannot confirm whether the blood vessel is completely or partially occluded due to the balloon inflation. In addition, although various fluoroscopic equipment (e.g., X-ray equipment, etc.) must be used to confirm whether the Levoa catheter is accurately positioned at the required point, there are many space constraints due to the size of the equipment. In general, hemostasis treatment using a Levoa catheter is mainly performed in the emergency room because it is used in emergency situations such as when there is hypovolemic shock, it is difficult to accurately identify the cause of bleeding, and vital signs are very unstable (e.g., acute bleeding due to traumatic bleeding). Therefore, it is difficult to confirm the position of the Levoa catheter using general fluoroscopic equipment such as X-ray due to space constraints in the emergency room.

[0006] The purpose of the present invention is to provide a Levoa catheter that can effectively prevent bleeding.

[0007] In addition, the present invention aims to provide a Levoa catheter capable of accurately finding the location of the Levoa catheter.

[0008] In addition, the present invention aims to provide a Levoa catheter capable of accurately determining the occlusion state of a blood vessel.

[0009] The problems to be solved by the present invention are not limited to the problems described above, and problems not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention pertains from this specification and the attached drawings.

[0010] The present invention provides a Levoa catheter. In one embodiment, the Levoa catheter includes a catheter tube having a tip portion and a branch portion, and a balloon portion formed between the tip portion and the branch portion and inflated within a blood vessel to occlude at least a portion of a blood vessel at a target point, wherein the tip portion is formed at a front end of the catheter tube and inserted into a blood vessel, the branch portion is formed at a distal end of the catheter tube and branches off, and at least one blood pressure measurement hole configured to measure blood pressure within a blood vessel may be formed in the catheter tube.

[0011] In one embodiment, the blood pressure measurement hole includes a first blood pressure measurement hole formed in the tip portion, and the first blood pressure measurement hole can be configured to transmit blood pressure on the front side of the target point when the balloon portion is in an inflated block state.

[0012] In one embodiment, the blood pressure measurement hole includes a second blood pressure measurement hole formed in the catheter tube adjacent to the distal end of the balloon portion, and the second blood pressure measurement hole can be configured to transmit blood pressure on the rear side of the target point when the balloon portion is in an inflated block state.

[0013] According to one embodiment, the blood pressure measurement hole includes a first blood pressure measurement hole formed in the tip portion and a second blood pressure measurement hole formed in the catheter tube adjacent to the distal end of the balloon portion, and in a state where the balloon portion is inflated as a block, the first blood pressure measurement hole can transmit blood pressure on the front side of the target point, and the second blood pressure measurement hole can transmit blood pressure on the rear side of the target point.

[0014] In one embodiment, the branch portion may include a first branch portion configured to transmit fluid to the balloon portion and a second branch portion configured to communicate with the first blood pressure measuring hole and the second blood pressure measuring hole, respectively, to independently transmit blood pressure at different points.

[0015] In one embodiment, the interior of the catheter tube may be configured with at least one of a fluid flow space connecting the first branch portion and the balloon portion, a first blood pressure transmission space connecting the second branch portion and the first blood pressure measurement hole, and a second blood pressure transmission space connecting the second branch portion and the second blood pressure measurement hole.

[0016] According to one embodiment, a first pressure module for measuring blood pressure on the front side of the balloon part transmitted from the first blood pressure transmission space may be installed at the end of the second branch part communicated with the first blood pressure measurement hole, and a second pressure module for measuring blood pressure on the rear side of the balloon part transmitted from the second blood pressure transmission space may be installed at the end of the second branch part communicated with the second blood pressure measurement hole.

[0017] In one embodiment, the degree of opening and closing of the balloon portion can be monitored by comparing the blood pressure measured from the first pressure module and the second pressure module, respectively.

[0018] In one embodiment, the catheter tube further includes a marker formed on the outside, and the marker may be made of a material that reflects the emitted ultrasound.

[0019] In one embodiment, the marker includes a first marker formed between the tip portion and the balloon portion and a second marker formed on the rear side of the balloon portion, and the length of the first marker and the length of the second marker may be different.

[0020] In one embodiment, the tip portion may have a J shape.

[0021] According to one embodiment of the present invention, the position of the Levoa catheter can be accurately found.

[0022] In addition, according to one embodiment of the present invention, information on occlusion of a blood vessel by a Levoa catheter can be efficiently distinguished.

[0023] Additionally, according to one embodiment of the present invention, damage to blood vessels during the hemostasis process can be minimized.

[0024] The effects of the present invention are not limited to the effects described above, and effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention pertains from this specification and the attached drawings.

[0025] FIG. 1 is a schematic drawing showing a Levoa catheter according to one embodiment of the present invention.

[0026] Figure 2 is a cross-sectional view schematically showing a catheter tube according to one embodiment.

[0027] Figure 3 is a schematic drawing showing an enlarged view of part A of Figure 1.

[0028] Figure 4 is a schematic drawing showing an enlarged view of part B of Figure 1.

[0029] Figure 5 is a partially enlarged schematic diagram showing a blood vessel completely occluded by the Levoa catheter of Figure 1.

[0030] Figure 6 is a partially enlarged view schematically showing a blood vessel partially occluded by the Levoa catheter of Figure 1.

[0031] FIG. 7 is a schematic drawing showing a Levoa catheter according to another embodiment of the present invention.

[0032] Figure 8 is a cross-sectional view schematically showing a catheter tube according to another embodiment of the present invention.

[0033] FIG. 9 is a drawing schematically showing a tip portion according to another embodiment of the present invention.

[0034] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily practice the present invention. Embodiments of the present invention can be modified and implemented in various forms and are not limited to the embodiments described below. In addition, the embodiments described below are provided so that those skilled in the art can more completely explain the present invention. Therefore, the shapes of components in the drawings are exaggerated to emphasize clear explanation. In addition, when describing the preferred embodiments of the present invention in detail, if it is determined that a specific description of a related well-known function or configuration may unnecessarily dilute the gist of the present invention, a detailed description thereof will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and operations.

[0035] To "include" a component, unless otherwise specifically stated, does not exclude other components, but rather implies that other components may be included. Specifically, terms such as "include" or "have" should be understood to mean features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] Singular expressions include plural expressions unless the context clearly indicates otherwise. Furthermore, terms such as "first" and "second" may be used to describe various components, but these components are not limited by these terms. These terms may be used to distinguish one component from another. For example, within the scope of the present invention, a first component may be referred to as a "second component," and similarly, a second component may also be referred to as a "first component."

[0037] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted in a way consistent with their meaning within the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined below.

[0038]

[0039] FIG. 1 is a schematic drawing of a Levoa catheter according to one embodiment of the present invention. FIG. 2 is a cross-sectional drawing schematically showing a catheter tube according to one embodiment. FIG. 3 is a schematic drawing showing an enlarged view of portion A of FIG. 1. FIG. 4 is a schematic drawing showing an enlarged view of portion B of FIG. 1.

[0040]

[0041] Referring to FIGS. 1 to 4, a Levoa catheter (10) according to one embodiment may include a catheter tube (100), a tip portion (200), a balloon portion (300), and a branch portion (400).

[0042] The Levoa catheter (10) according to one embodiment can be used to stop bleeding in an emergency situation such as acute bleeding due to traumatic bleeding. However, it goes without saying that the Levoa catheter (10) can be used to stop bleeding caused by various reasons such as non-traumatic bleeding (e.g., non-traumatic cardiac arrest) in addition to traumatic bleeding. In addition, the Levoa catheter (10) can be inserted into the femoral artery and moved to a first location (e.g., between the kidney and the femoral artery (Aorta Zone Ⅲ)) and / or a second location (e.g., between the celiac artery and the left subclavian artery (Aorta Zone Ⅰ)) to stop bleeding.

[0043] According to one embodiment, the catheter tube (100) may have a tube shape whose cross-section is generally circular. In addition, the catheter tube (100) may be made of a flexible material. As illustrated in FIG. 2, a fluid flow space (102), a first blood pressure transmission space (104), and / or a second blood pressure transmission space (106) may be formed inside the catheter tube (100). Each space (102, 104, 106) is provided as an independent space. It is sufficient that each space (102, 104, 106) is an independent space, and the positions and shapes of the fluid flow space (102), the first blood pressure transmission space (104), and the second blood pressure transmission space (106) illustrated in FIG. 2 may be variously modified.

[0044] The catheter tube (100) may be composed of a tip portion (200) and a branch portion (400). For example, the tip portion (200) of the catheter tube (100) may be the tip portion, and the distal end of the catheter tube (100) may be the branch portion (400). In one embodiment, the tip portion (200) is the portion that is first inserted into a patient's blood vessel. The branch portion (400) may be divided into two branches. The branch portion (400) may be divided into a first branch portion (410) and a second branch portion (420).

[0045] Additionally, a balloon portion (300) may be formed between the tip portion (200) and the branch portion (400). In one embodiment, the balloon portion (300) is disposed on the outside of the catheter tube (100). For example, the balloon portion (300) may be disposed to surround the catheter tube (100). The balloon portion (300) and the catheter tube (100) may be configured to be in fluid communication with each other. More specifically, the fluid flow space (102) formed inside the catheter tube (100) may be configured to be in fluid communication with the balloon portion (300).

[0046] In one embodiment, the fluid flow space (102) described above is formed inside the first branch portion (410). In addition, the end of the first branch portion (410) is connected to the fluid supply portion (412). The fluid supply portion (410) supplies a fluid. For example, the fluid supply portion (410) may be a syringe. In addition, the fluid may be saline. More specifically, the fluid in one embodiment may be sterilized saline. In addition, a valve (not shown) for selectively blocking the flow of the fluid may be further installed at the portion where the fluid supply portion (410) and the first branch portion (410) are connected.

[0047] That is, the fluid flow space (102) may be a space in which fluid supplied to or discharged from the balloon portion (300) flows. That is, the fluid supplied by the fluid supply portion (410) may be delivered to the balloon portion (300) through the fluid flow space (102) to expand the balloon portion (300). In addition, the fluid may be discharged from the balloon portion (300) through the fluid flow space (102) to deflate the balloon portion (300).

[0048] In addition, at least one blood pressure measurement hole is formed in the catheter tube (100). In one embodiment, the number of blood pressure measurement holes may be two. However, the present invention is not limited thereto, and the number of blood pressure measurement holes formed in the catheter tube (100) may be one or N (N is a natural number greater than or equal to 3). For the convenience of understanding, the following description will be given as an example a case where the number of blood pressure measurement holes formed in the catheter tube (100) is two.

[0049] The blood pressure measurement hole is configured to measure blood pressure in a patient's blood vessel. The blood pressure measurement hole may include a first blood pressure measurement hole (510) and a second blood pressure measurement hole (520). According to one embodiment, the first blood pressure measurement hole (510) may be formed in the tip portion (200). The first blood pressure measurement hole (510) may be formed at any position of the tip portion (200). The first blood pressure measurement hole (510) communicates the first blood pressure transmission space (104) described above with the inside of the blood vessel. According to one embodiment, the second blood pressure measurement hole (520) may be formed in the catheter tube (100) adjacent to the distal end (downstream side) of the balloon portion (300). The second blood pressure measurement hole (520) communicates the second blood pressure transmission space (106) described above with the inside of the blood vessel. That is, the first blood pressure transmission space (104) and the second blood pressure transmission space (106) are connected to the first blood pressure measurement hole (510) and the second blood pressure measurement hole (520), respectively, and can function as passages through which blood pressure at a specific point within a blood vessel is transmitted. A detailed description thereof will be provided later.

[0050] In one embodiment, the first blood pressure transmission space (104) and the second blood pressure transmission space (106) described above are formed inside the second branch portion (420), respectively. In addition, a first pressure module (610) and a second pressure module (620) are respectively installed at the ends of the second branch portion (420). The pressure modules (610, 620) according to one embodiment may be modules that detect pressure fluctuations in the transmitted blood pressure and convert them into electrical digital signals. The pressure module according to one embodiment may be any one of known devices that directly invasively penetrate a patient's body to measure the patient's blood pressure. The first pressure module (610) is connected to the first blood pressure transmission space (104), and the second pressure module (620) is connected to the second blood pressure transmission space (106). Accordingly, the first pressure module (610) is connected to the first blood pressure measurement hole (510) through the first blood pressure transmission space (104), and can measure a blood pressure value for the first point from the pressure fluctuation within the blood vessel transmitted from the first blood pressure measurement hole (510). In addition, the second pressure module (620) is connected to the second blood pressure measurement hole (520) through the second blood pressure transmission space (106), and can measure a blood pressure value for the second point from the pressure fluctuation within the blood vessel transmitted from the second blood pressure measurement hole (520). Here, the first point may mean the front side of the balloon part (300), and the second point may mean the rear side of the balloon part (300). A detailed mechanism for this will be described later.

[0051] In addition, the first pressure module (610) and the second pressure module (620) can be connected to the control unit (650) wirelessly or by wire. The control unit (650) can be composed of a process controller consisting of a microprocessor (computer) that executes control, a user interface consisting of a keyboard for an operator to perform command input operations to manage the device, a display panel that visualizes and displays the operating status of the device, a control program for executing the device under the control of the process controller, and a memory unit for storing such a program. The control unit (650) can receive blood pressure values ​​from the first pressure module (610) and the second pressure module (620), respectively, and monitor the same. In addition, the control unit (650) can compare the blood pressure values ​​received from the first pressure module (610) and the second pressure module (620) with each other to monitor whether the blood vessel is completely or partially occluded by the Levoa catheter (10).

[0052]

[0053] Fig. 5 is a partially enlarged view schematically showing a blood vessel completely occluded by the Levoa catheter of Fig. 1. Fig. 6 is a partially enlarged view schematically showing a blood vessel partially occluded by the Levoa catheter of Fig. 1.

[0054] Hereinafter, with reference to FIGS. 1 to 4, 5 and 6, a mechanism for occluding at least a portion of a blood vessel by a Levoa catheter according to one embodiment of the present invention will be described.

[0055]

[0056] For example, in order to stop bleeding in a patient with acute bleeding due to trauma, a Levoa catheter (10) according to one embodiment is inserted into the patient's blood vessel (e.g., the femoral artery) (BV). Specifically, the distal end of the tip portion (200) is first inserted into the patient's blood vessel (BV), and the catheter tubes (100) at the rear end of the tip portion (200) are also moved along into the blood vessel (BV). The Levoa catheter (10) moves to a target point (T). Specifically, the balloon portion (300) is moved to the target point (T). Here, the target point (T) may mean a position where bleeding can be stopped when the balloon portion (300) is fully inflated to completely close the blood vessel (BV).

[0057] When the Levoa catheter (10) is moved to the target point (T) in the blood vessel (BV), the fluid supply unit (412) supplies fluid to the balloon unit (300) through the fluid flow space (102). When the balloon unit (300) is fully expanded by the fluid supplied from the fluid supply unit (412) and the blood vessel (BV) is completely closed, the blood upstream of the balloon unit (300) is blocked by the balloon unit (300). Accordingly, blood cannot flow downstream of the balloon unit (300), thereby preventing bleeding. In other words, the blood in the front of the target point (T) cannot flow to the rear of the target point (T).

[0058] In contrast, even if the Levoa catheter (10) is moved to the target point (T) within the blood vessel (BV) and supplies fluid to the balloon portion (300), the balloon portion (300) may not completely occlude the blood vessel (BV). For example, even if a predetermined sufficient amount of fluid is supplied to the balloon portion (300), the balloon portion (300) may partially occlude the blood vessel (BV). This phenomenon is due to the fact that it is not possible to determine what percentage of the cross-sectional area of ​​the blood vessel (aorta) the inflated balloon portion (300) actually occludes in a situation where the diameter of the blood vessel (aorta) varies for each patient. In this case, blood flows between the upstream and downstream sides of the balloon portion (300), resulting in continuous blood loss at the bleeding point.

[0059] Accordingly, according to one embodiment of the present invention, blood pressure at a first point can be transmitted from a first blood pressure measurement hole (510) formed in a tip portion (200). Here, the first point may be the upstream side of the balloon portion (300) (the front side of the target point (T)). The blood pressure transmitted to the first blood pressure transmission space (104) communicating with the first blood pressure measurement hole (510) is transmitted again to the first pressure module (610). The first pressure module (610) converts the pressure fluctuation of the blood pressure at the first point into an electrical digital signal to measure a real-time blood pressure value.

[0060] In addition, the blood pressure of the second point can be transmitted from the second blood pressure measurement hole (520) formed at the distal end of the balloon part (300). Here, the second point may be the downstream side of the balloon part (300) (the rear side of the target point (T)). The blood pressure transmitted to the second blood pressure transmission space (106) communicating with the second blood pressure measurement hole (520) is transmitted again to the second pressure module (620), and the second pressure module (620) converts the pressure fluctuation of the blood pressure for the second point into an electrical digital signal to measure the real-time blood pressure value.

[0061] The control unit (650) can receive blood pressure values ​​for the first point and the second point in real time from the first pressure module (610) and the second pressure module (620), compare the respective blood pressure values, and monitor and determine the degree of opening and closing of the balloon unit (300). For example, if the blood pressure value measured at the first point is 130 to 80 mmHg and the blood pressure value measured at the second point is 0 mmHg, the control unit (650) can determine that the blood vessel (BV) is completely closed by the Levoa catheter (10). Conversely, if the blood pressure value measured at the first point is 130 to 80 mmHg and the blood pressure value measured at the second point is 60 to 30 mmHg, the blood vessel (BV) can be determined to be partially closed. In addition, the control unit (650) can estimate the degree of partial closing percentage of the blood vessel (BV) based on the ratio according to the blood pressure difference value at each point.

[0062] In emergency situations, such as acute bleeding due to trauma, even if the balloon of a Levoa catheter is inflated by supplying fluid, the vessel often fails to completely occlude, depending on the patient's condition. Furthermore, traditionally, medical professionals would judge complete occlusion of a vessel by sensing resistance in the catheter during fluid delivery. In other words, complete occlusion was determined by intuition, based on the medical team's experience.

[0063] However, according to the above-described embodiment, by forming a first blood pressure measurement hole (510) and a second blood pressure measurement hole (520) in the Levoa catheter (10), it is possible to efficiently distinguish and determine whether a blood vessel is completely occluded or partially occluded due to the expansion of the balloon portion (300). In addition, even without using equipment with significant spatial limitations such as an X-ray, it is possible to accurately determine whether a blood vessel is completely occluded or partially occluded.

[0064] Unlike the above-described embodiment, only the second blood pressure measurement hole (520) may be formed in the Levoa catheter (10). That is, the blood pressure measurement hole may be formed only in the catheter tube (100) adjacent to the distal end of the balloon portion (300). However, in order to more accurately determine whether a blood vessel is occluded, as described above, it would be preferable for the blood pressure measurement holes to be formed in the catheter tube (100) adjacent to the distal end of the tip portion (200) and the balloon portion (300).

[0065]

[0066] Below, a Levoa catheter according to another embodiment is described. Except where additional details are provided, the Levoa catheter described below has a structure and function largely identical or similar to the Levoa catheter described with reference to FIGS. 1 to 6. Therefore, descriptions of overlapping details are omitted.

[0067]

[0068] FIG. 7 is a schematic drawing showing a Levoa catheter according to another embodiment of the present invention.

[0069] Referring to FIG. 7, the Levoa catheter (10) according to one embodiment may further include a marker. In one embodiment, there may be at least one marker. The marker is formed on the outside of the catheter tube (100). Specifically, the marker may surround the outside of the catheter tube (100). In one example, the marker may surround the outside of the catheter tube (100) in a coil shape. In this case, there is an advantage in securing more flexibility when the catheter tube (100) is moved within a blood vessel. The marker may be made of an echogenic material that reflects the oscillating ultrasound. For example, the marker may be made of a material selected from the group consisting of stainless steel, titanium, aluminum, nylon, ceramic, palladium, and / or platinum.

[0070] According to one embodiment, a marker may include a first marker (710) and a second marker (710). The first marker (710) is formed between the tip portion (200) and the balloon portion (300). The second marker (720) is formed on the rear side of the balloon portion (300). The lengths of the first marker (710) and the second marker (720) may be different. When the Levoa catheter (10) is viewed from the side, the total length of the first marker (710) wrapped around the catheter tube (100) and the total length of the second marker (720) wrapped around the catheter tube (100) may be different from each other. For example, the length of the first marker (710) may be shorter than the length of the second marker (720). However, the present invention is not limited thereto, and the length of the first marker (710) may be longer than the length of the second marker (720). The length of the first marker (710) and the second marker (720) is sufficient to be visually confirmed by a device that generates ultrasonic waves as described later.

[0071] Typically, the Levoa catheter is inserted into the patient's body to stop bleeding, making it difficult to visually confirm whether the Levoa catheter has reached the target location. Furthermore, since Levoa catheters are primarily used in emergency situations, transporting bulky equipment such as X-rays to the emergency room in a time-sensitive situation to determine the location of the Levoa catheter is challenging due to both time and space constraints. Furthermore, there are limitations in that equipment such as X-rays cannot be installed simultaneously with patient care.

[0072] According to the above-described embodiment for solving these problems, the position of the balloon part (300) can be accurately determined using a simple ultrasonic device without exposure to radiation and without using fluoroscopy equipment (e.g., X-ray equipment) equipped in an angiography room, etc. In other words, it is possible to easily and accurately determine whether the balloon part (300) is positioned at the target point. In addition, unlike existing fluoroscopy equipment, the position of the Levoa catheter (10) can be determined in real time while treating a patient in an emergency situation.

[0073]

[0074] Figure 8 is a cross-sectional view schematically showing a catheter tube according to another embodiment of the present invention.

[0075] Referring to FIG. 8, a fluid flow space (102), a first blood pressure transmission space (104), and / or a second blood pressure transmission space (106) may be formed inside a catheter tube (100) according to one embodiment.

[0076] The fluid flow space (102) may be formed in the central portion of the catheter tube (100) when viewed from the cross-section of the catheter tube (100), and the first blood pressure transmission space (104) and the second blood pressure transmission space (106) may be formed to surround the fluid flow space (102) from the outside. In addition, the first blood pressure transmission space (104) and the second blood pressure transmission space (106) may be formed symmetrically to each other. However, the present invention is not limited to the above-described example, and the shape and position of each space may be variously modified.

[0077]

[0078] FIG. 9 is a drawing schematically showing a tip portion according to another embodiment of the present invention.

[0079] Referring to FIG. 9, the tip portion (200) according to one embodiment of the present invention may have a generally J-shape. That is, the tip portion (200) may have a shape in which the tip portion is formed to be bent inward. Due to this shape, damage to the blood vessel caused by the tip portion shape of the tip portion (200) when the tip portion of the tip portion (200) initially enters the patient's blood vessel can be minimized. In other words, secondary damage that may occur to the patient during the treatment process can be minimized.

[0080]

[0081] The detailed description above is illustrative of the present invention. Furthermore, the above description illustrates and describes preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. In other words, changes or modifications are possible within the scope of the inventive concept disclosed in this specification, the scope equivalent to the written disclosure, and / or the scope of technology or knowledge in the art. The written embodiments illustrate the best possible state for implementing the technical idea of ​​the present invention, and various modifications required for specific application fields and uses of the present invention are also possible. Therefore, the detailed description of the invention above is not intended to limit the present invention to the disclosed embodiments. Furthermore, the appended claims should be construed to include other embodiments.

[0082] According to the Levoa catheter according to embodiments of the present invention, the position of the catheter can be accurately found, and thus, blood vessel occlusion information can be efficiently distinguished, thereby minimizing damage to the blood vessel during the hemostasis process.

Claims

1. Regarding the Levoa catheter, A catheter tube consisting of a tip portion and a branch portion; and A balloon portion formed between the tip portion and the branch portion and inflated within the blood vessel to occlude at least a portion of the blood vessel at the target point, The above tip portion is formed at the tip of the catheter tube and is inserted into a blood vessel, The above branch portion is formed and branches off at the end of the catheter tube, In the above catheter tube, A Levoa catheter characterized in that at least one blood pressure measuring hole configured to measure blood pressure within a blood vessel is formed.

2. In paragraph 1, The above blood pressure measurement hole includes a first blood pressure measurement hole formed in the tip portion, The above first blood pressure measurement hole is, A Levoa catheter characterized in that the balloon portion is configured to transmit blood pressure on the anterior side of the target point in an inflated block state.

3. In paragraph 1, The above blood pressure measurement hole includes a second blood pressure measurement hole formed in the catheter tube adjacent to the distal end of the balloon portion, The above second blood pressure measurement hole is, A Levoa catheter characterized in that it is configured to transmit blood pressure on the posterior side of the target point in a state where the balloon portion is inflated.

4. In paragraph 1, The above blood pressure measurement hole is, A first blood pressure measurement hole formed in the tip portion; and Including a second blood pressure measurement hole formed in the catheter tube adjacent to the terminal side of the balloon portion, A Levoa catheter characterized in that, in the above balloon-inflated block state, the first blood pressure measurement hole transmits blood pressure on the front side of the target point, and the second blood pressure measurement hole transmits blood pressure on the rear side of the target point.

5. In paragraph 4, The above branch is, A first branch section for delivering fluid to the above balloon section; and A Levoa catheter comprising a second branch portion configured to communicate with the first blood pressure measurement hole and the second blood pressure measurement hole, respectively, and configured to independently transmit blood pressure at different points.

6. In paragraph 5, The interior of the above catheter tube is: A fluid flow space connecting the first branch section and the balloon section; A first blood pressure transmission space connecting the second branch section and the first blood pressure measurement hole; and A Levoa catheter characterized in that it comprises at least one of the second blood pressure transmission spaces that connect the second branch portion and the second blood pressure measurement hole.

7. In paragraph 6, At the end of the second branch portion connected to the first blood pressure measurement hole, a first pressure module is installed to measure the blood pressure on the front side of the balloon portion transmitted from the first blood pressure transmission space. A Levoa catheter characterized in that a second pressure module for measuring blood pressure on the rear side of the balloon portion transmitted from the second blood pressure transmission space is installed at the end of the second branch portion connected to the second blood pressure measurement hole.

8. In paragraph 7, A Levoa catheter characterized in that the degree of opening and closing of the balloon portion is monitored by comparing the blood pressure measured in the first pressure module and the second pressure module.

9. In paragraph 1, Further comprising a marker formed on the outside of the catheter tube; A Levoa catheter characterized in that the marker is made of a material that reflects the emitted ultrasound.

10. In paragraph 9, The above marker is, a first marker formed between the tip portion and the balloon portion; and Including a second marker formed on the rear side of the above balloon portion, A Levoa catheter characterized in that the length of the first marker and the length of the second marker are different.

11. In any one of paragraphs 1 to 10, A Levoa catheter characterized in that the tip portion has a J shape.

Images