IABP catheter

Abstract

The invention relates to an IABP catheter, which belongs to the technical field of medical instruments and comprises a main catheter, one end of the main catheter is provided with a catheter connector, the outer surface of the other end of the main catheter is provided with a counterpulsation balloon, and a guide wire cavity and a first balloon cavity are arranged in the main catheter. The catheter connector is provided with a first gas connector and a guide wire connector which are correspondingly communicated with one end of the first balloon cavity and one end of the guide wire cavity respectively, the other end of the first balloon cavity is communicated with an inner cavity of the counterpulsation balloon, the other end of the guide wire connector penetrates through the other end of the main catheter body, and a temperature monitor is arranged at one end of the main catheter body. And one end of the main body catheter is provided with a fixer between the temperature monitor and the catheter joint. The aorta counterpulsation catheter has the advantages that the structural design is simple and reasonable, the catheter has the function of a conventional aorta counterpulsation balloon, blood temperature change data in the artery can be monitored, the catheter can effectively cooperate with (PiCCO) pulse analysis and continuous cardiac displacement monitoring, and clinical requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an IABP catheter. Background Art

[0002] Intra-aortic balloon pump (IABP) involves inserting a balloon catheter into the descending aorta via the femoral artery. The balloon is inflated with helium and connected to an external gas source and counterpulsation control device. The patient's ECG or blood pressure signal is fed into the counterpulsation control device, causing the balloon pump to move in sync with the patient's heartbeat and in opposite directions. Immediately before contraction (when the aortic valve opens), the balloon is deflated, lowering end-diastolic pressure in the aorta, reducing left ventricular work, lowering afterload, and decreasing myocardial oxygen consumption. Immediately before diastole (when the aortic valve closes), the balloon is inflated, increasing diastolic coronary perfusion pressure and boosting myocardial oxygen supply.

[0003] PiCCO (Pulse Indicated Continuous Cardiac Output) is a minimally invasive hemodynamic monitoring technology that uses the thermodilution method to measure single cardiac output and arterial pressure waveform curve analysis technology to measure continuous cardiac output. Clinically, a catheter is inserted into the central vein and a catheter into the femoral artery. After a temperature indicator (ice saline) is injected into the central vein, it is distributed throughout the various chambers of the chest cavity. The distribution of the capacity of each chamber can be obtained based on the temperature decay curve measured by the femoral artery. When the heat signal is detected by the thermistor on the catheter inserted into the femoral artery, the temperature can be identified and plotted as a curve.

[0004] Intra-aortic balloon pump (IABP) and PiCCO are two commonly used technologies in intensive care. They can be used in combination to improve patient outcomes. However, when used together, both femoral arteries are occupied, completely immobilizing the patient's limbs and increasing the risk of postoperative complications.

[0005] Based on this, it is necessary to develop an IABP catheter that only occupies one side of the femoral artery pathway to achieve the combined use of intra-aortic balloon counterpulsation and PiCCO, thereby overcoming the above technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an IABP catheter, which effectively overcomes the defects of the prior art.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] An IABP catheter comprises a main body catheter, one end of which is provided with a catheter connector, and the outer surface of the other end is provided with a counterpulsation balloon, a guidewire lumen and a first balloon lumen are provided in the main body catheter, the catheter connector is provided with a first gas interface and a guidewire interface respectively connected to one end of the first balloon lumen and one end of the guidewire lumen, the other end of the first balloon lumen is connected to the inner lumen of the counterpulsation balloon, the other end of the guidewire interface passes through the other end of the main body catheter, a temperature monitor is provided at one end of the main body catheter, and a fixer is provided at one end of the main body catheter between the temperature monitor and the catheter connector.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, a circuit connected to the temperature monitor is provided in the main body conduit, and the circuit passes through a side wall at one end of the main body conduit.

[0011] Furthermore, a blocking balloon is provided at one end of the main catheter, a second balloon cavity is provided in the main catheter, a second gas interface is provided on the catheter connector, one end of the second balloon cavity is connected to the inner cavity of the blocking balloon, and the other end is connected to the second gas interface.

[0012] Furthermore, a developing mark is provided on the other end surface of the main body conduit.

[0013] Furthermore, the inner wall of the other end port of the main body conduit is designed to be trumpet-shaped.

[0014] Furthermore, a flexible mesh sleeve is provided on the outer surface of one end of the main body conduit, and the temperature monitor is installed in the mesh sleeve.

[0015] Furthermore, the temperature monitor is a thermistor.

[0016] Furthermore, it also includes an indicator monitoring unit, which is installed in the above-mentioned mesh sleeve. The above-mentioned main catheter is provided with a circuit connected to the above-mentioned indicator monitoring unit, and the circuit passes through the side wall of one end of the above-mentioned main catheter. The above-mentioned indicator monitoring unit includes one or more of a blood pressure monitor and a pH sensor.

[0017] Furthermore, the mesh sleeve is a nickel-titanium alloy braided mesh.

[0018] Furthermore, a medium channel is provided in the main body conduit, a medium interface is provided on the conduit joint, one end of the medium channel is connected to the medium interface, and the other end passes through the other end of the main body conduit.

[0019] The beneficial effects of the present invention are: the structural design is simple and reasonable, the catheter has the functions of a conventional aortic counterpulsation balloon, and can also monitor blood temperature change data in the artery, and can effectively cooperate with (PiCCO) pulse analysis and continuous cardiac output monitoring to meet clinical needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the IABP catheter of the present invention;

[0021] Figure 2 FIG1 is a schematic structural diagram of another embodiment of an IABP catheter of the present invention;

[0022] Figure 3 FIG. 4 is a schematic structural diagram of another embodiment of the IABP catheter of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Main catheter; 2. Catheter connector; 3. Counterpulsation balloon; 4. Temperature monitor; 5. Fixator; 6. Occlusion balloon; 7. Index monitoring unit; 11. Net sleeve. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] Example

[0027] like Figure 1 As shown, the IABP catheter of this embodiment includes a main catheter 1, one end of the main catheter 1 is provided with a catheter connector 2, and the outer surface of the other end is provided with a counterpulsation balloon 3, the main catheter 1 is provided with a guidewire lumen and a first balloon lumen, the catheter connector 2 is provided with a first gas interface and a guidewire interface respectively connected to one end of the first balloon lumen and one end of the guidewire lumen, the other end of the first balloon lumen is connected to the inner cavity of the counterpulsation balloon 3, the other end of the guidewire interface passes through the other end of the main catheter 1, one end of the main catheter 1 is provided with a temperature monitor 4, and one end of the main catheter 1 is provided with a fixer 5 between the temperature monitor 4 and the catheter connector 2.

[0028] In the IABP catheter of this embodiment, based on the existing main catheter 1, a temperature monitor 4 is provided on the surface of the part where the main catheter 1 enters the femoral artery. The temperature monitor 4 can monitor the temperature changes of the blood in the femoral artery in real time. In addition to having the aortic counterpulsation function of the traditional IABP catheter, the entire catheter can cooperate with the catheter injected with ice saline and the monitoring instrument inserted in the central vein to realize the monitoring of cardiac output. Moreover, the two combined methods only need to occupy the femoral artery access on one side of the patient, which leaves the femoral artery on the other side of the patient unoccupied. Compared with the combined use of the traditional intra-aortic balloon counterpulsation (IABP) and PiCCO, only one femoral artery needs to be punctured, reducing the risk of puncture. Moreover, since one femoral artery of the patient is unoccupied, the limb can be allowed to have a certain amount of activity, reducing the risk of postoperative complications. At the same time, it also saves the cost of consumables.

[0029] It should be noted that: in this embodiment, the catheter connector 2 is present in existing IABP catheters and is a multi-way connector. The first balloon lumen and the guidewire lumen are both provided therein, which will not be described in detail here.

[0030] In this embodiment, a line connected to the temperature monitor 4 is provided in the main catheter 1 and extends out from a side wall of one end of the main catheter 1. The temperature monitor 4 is connected to an instrument outside the body via a wired line, and signal transmission is stable.

[0031] In this embodiment, the fixator 5 is a conventional accessory of aortic counterpulsation catheter, which is a butterfly-shaped piece and is fixed to the skin by sutures or adhesive (refer to the patent technology with application number 202510014474.X).

[0032] This is prior art and will not be described in detail here.

[0033] As a preferred embodiment, Figure 2 As shown, one end of the main catheter 1 is also provided with a blocking balloon 6, a second balloon cavity is provided in the main catheter 1, and a second gas interface is provided on the catheter connector 2. One end of the second balloon cavity is connected to the inner cavity of the blocking balloon 6, and the other end is connected to the second gas interface.

[0034] In the above embodiment, when the counterpulsation balloon 3 begins to contract, the blocking balloon 6 delays the start of contraction to increase the resistance to suction toward the distal end when the counterpulsation balloon 3 contracts and reduces the reverse blood flow extracted from the distal end, thereby increasing the suction effect on the proximal end, further reducing the left ventricular afterload, and thus increasing cardiac output; at the end of left ventricular contraction, the blocking balloon 6 and the counterpulsation balloon 3 end contraction at the same time (or nearly at the same time) to avoid blocking the forward blood flow to the distal end of the aorta. After the left ventricular contraction ends and the aortic valve closes, the counterpulsation balloon 3 and the blocking balloon 6 begin to expand to supply blood to the aorta; during expansion, the counterpulsation balloon 3 and the blocking balloon 6 can expand synchronously to supply blood to the aorta at both ends of the counterpulsation balloon 3 and the blocking balloon 6 at the same time (consistent with traditional IABP). Alternatively, the blocking balloon 6 may be set to expand earlier than the counterpulsation balloon 3 based on actual needs, thereby increasing distal resistance to increase blood supply to the proximal aorta, thereby increasing blood supply to the coronary arteries, head, and upper limbs (for details, please refer to the patented technology with application number 202510014474.X). Of course, the design of the above-mentioned blocking balloon 6 may also refer to the patented technology with application number 202220240360.9. Detailed description is omitted here.

[0035] In this embodiment, the other end surface of the main catheter 1 is provided with a development mark to facilitate entry into the body under the guidance of an X-ray instrument.

[0036] In this embodiment, the inner wall of the other end of the main catheter 1 is designed to be trumpet-shaped, so as to facilitate the insertion of the guide wire and allow the main catheter 1 to enter the blood vessel.

[0037] In this embodiment, a flexible mesh 11 is provided on the outer surface of one end of the main conduit 1, and the temperature monitor 4 is mounted in the mesh 11. The design of the mesh 11 facilitates the installation and fixation of the temperature monitor 4.

[0038] In this embodiment, the temperature monitor 4 adopts a thermal probe of an adapted type (a prior art product, which will not be described in detail here).

[0039] As a preferred embodiment, Figure 3 As shown, it also includes an indicator monitoring unit 7, which is installed in the above-mentioned mesh sleeve 11. The above-mentioned main catheter 1 is provided with a line connected to the above-mentioned indicator monitoring unit 7, and the line passes through the side wall of one end of the above-mentioned main catheter 1. The above-mentioned indicator monitoring unit 7 includes one or more of a blood pressure monitor and a pH sensor.

[0040] In the above embodiment, after the main catheter 1 is placed, the index monitoring unit 7 can monitor the intra-arterial blood pressure, pH, and other conditions, and accurately obtain the patient's blood pressure and pH index data. The data is then transmitted to external equipment via a circuit. The blood pressure monitor uses a conventional clinical pressure sensor for measuring invasive blood pressure (which belongs to the existing technology and will not be described in detail here).

[0041] It should be noted that the index monitoring unit 7 is not limited to the above-mentioned blood pressure monitor and pH sensor, and any existing electronic components that can enter the blood vessels to monitor the patient's indexes can be used.

[0042] In this embodiment, the mesh sleeve 11 is a nickel-titanium alloy braided mesh, and more specifically, is woven into a mesh shape using nickel-titanium alloy wires.

[0043] As a preferred embodiment, a medium channel is provided in the main conduit 1 , a medium interface is provided on the conduit joint 2 , one end of the medium channel is connected to the medium interface, and the other end passes through the other end of the main conduit 1 .

[0044] In the above embodiment, the medium channel and the medium interface can be connected to a device for injecting a medium or a drug into a blood vessel to achieve arterial drug administration, or to inject other media (such as contrast agents, etc.) into the blood vessel.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0050] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An IABP catheter, characterized in that: The invention comprises a main catheter (1), wherein one end of the main catheter (1) is provided with a catheter connector (2), and the outer surface of the other end is provided with a counterpulsation balloon (3), a guidewire cavity and a first balloon cavity are provided in the main catheter (1), the catheter connector (2) is provided with a first gas interface and a guidewire interface respectively connected to one end of the first balloon cavity and one end of the guidewire cavity, the other end of the first balloon cavity is connected to the inner cavity of the counterpulsation balloon (3), the other end of the guidewire interface passes through the other end of the main catheter (1), a temperature monitor (4) is provided at one end of the main catheter (1), and a fixer (5) is provided between the temperature monitor (4) and the catheter connector (2) at one end of the main catheter (1).

2. The IABP catheter according to claim 1, characterized in that: A circuit connected to the temperature monitor (4) is provided in the main conduit (1), and the circuit passes through a side wall at one end of the main conduit (1).

3. The IABP catheter according to claim 1, characterized in that: One end of the main catheter (1) is further provided with a blocking balloon (6), a second balloon cavity is provided in the main catheter (1), a second gas interface is provided on the catheter connector (2), one end of the second balloon cavity is communicated with the inner cavity of the blocking balloon (6), and the other end is communicated with the second gas interface.

4. The IABP catheter according to claim 1, characterized in that: The other end surface of the main body catheter (1) is provided with a developing mark.

5. The IABP catheter according to claim 1, characterized in that: The inner wall of the other end port of the main body conduit (1) is configured to be trumpet-shaped.

6. The IABP catheter according to claim 1, characterized in that: A flexible mesh sleeve (11) is provided on the outer surface of one end of the main conduit (1), and the temperature monitor (4) is installed in the mesh sleeve (11).

7. The IABP catheter according to claim 6, characterized in that: The temperature monitor (4) is a thermal probe.

8. The IABP catheter according to claim 6, characterized in that: The invention also includes an indicator monitoring unit (7), which is installed in the mesh sleeve (11). A circuit connected to the indicator monitoring unit (7) is provided in the main catheter (1), and the circuit passes through the side wall of one end of the main catheter (1). The indicator monitoring unit (7) includes one or more of a blood pressure monitor and a pH sensor.

9. The IABP catheter according to claim 6, characterized in that: The mesh sleeve (11) is a nickel-titanium alloy braided mesh.

10. The IABP catheter according to any one of claims 1 to 9, characterized in that: A medium channel is provided in the main conduit (1), a medium interface is provided on the conduit joint (2), one end of the medium channel is connected to the medium interface, and the other end passes through the other end of the main conduit (1).

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