An intraaortic balloon counterpulsation catheter

Abstract

The present invention discloses an aortic balloon counterpulsation catheter, which relates to the technical field of medical devices. The present invention comprises a cuff, wherein a guide wire tube 1, an airway tube 1 and a blood pressure tube 1 are arranged inside the cuff, an outer tube is fixedly connected to the left end of the cuff, and the outer tube adopts a three-cavity structure design, which is respectively connected to the guide wire tube 1, the airway tube 1 and the blood pressure tube 1, and a pressure measuring hole is opened on the outer side of the outer tube, which is connected to the blood pressure tube 1. The present invention has a pressure measuring hole on the opposite side of the tip side of the balloon, that is, a pressure measuring hole is arranged on the outer tube, and then the pressure measuring passage is realized by the three-cavity structure design of the outer tube part, and is extended by the blood pressure tube 1 to be connected to the pressure detection equipment. This design can realize the aortic balloon counterpulsation catheter as a catheter to intervene in the aorta through the subclavian artery or the carotid artery, solving the problem that the aortic balloon counterpulsation catheter cannot be placed due to femoral artery vascular abnormalities in clinical practice.

Description

Technical Field

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

[0002] Coronary heart disease (CHD) is a common and frequent cardiovascular disease. Its main pathological manifestations are varying degrees of coronary artery stenosis, myocardial ischemia, and an imbalance between myocardial oxygen supply and demand. Intraaortic balloon pumping (IABCP) can effectively increase myocardial blood supply and reduce oxygen consumption, benefiting patients with CHD the most. This procedure, a form of mechanical support, physically increases aortic diastolic pressure, increases coronary blood supply, and improves myocardial function, thereby providing auxiliary support for the heart.

[0003] A Chinese patent (publication number: CN117731923A) discloses an aortic balloon counterpulsation catheter, comprising: a catheter assembly, a tip portion and a balloon, wherein the catheter assembly comprises an inner tube and an outer tube, the outer tube being sleeved on the outside of the inner tube, the inner tube being made of a composite of one or more materials selected from PEEK, PE, Pebax or 304 stainless steel, and the outer tube being made of a composite of one or more materials selected from Pebax and TPU; the tip portion being used to be fixedly connected to one end of the inner tube to guide the catheter assembly into the body and improve the compliance of the catheter assembly when inserted into the body, the tip portion being made of a composite of one or more materials selected from TPU and Pebax; the balloon being used to be sleeved and fixedly connected to a position of the inner tube near the tip portion, the balloon being capable of expanding or contracting to increase myocardial perfusion or reduce ventricular ejection resistance, and the balloon being made of a composite of one or more materials selected from TPU and Pebax.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] In the past, transaortic balloon counterpulsation mainly involved inserting a balloon catheter through the femoral artery into the descending aorta, and increasing myocardial perfusion and reducing ventricular ejection resistance by inflating and deflating the balloon during diastole and systole. During the adjuvant treatment process, the counterpulsation pressure generated at the end of the balloon (i.e., the heart side) needs to be monitored in real time. In actual clinical practice, some patients (especially elderly patients) have tortuous femoral arteries or sclerotic plaques, making it very difficult to penetrate the femoral artery, such as entering from the subclavian artery or carotid artery. The aortic balloon counterpulsation catheters currently on the market cannot use this vascular intervention route because their blood pressure sensing pathway is at the end of the balloon of the catheter. Due to the need to meet the clinical demand for real-time detection of balloon counterpulsation pressure in the aorta, current market products can only be intervened through the femoral artery. The fundamental reason is that the blood pressure monitoring pathway of current products is located at the end of the counterpulsation balloon catheter. Summary of the Invention

[0006] The purpose of the present invention is to solve the above problems and provide an aortic balloon counterpulsation catheter.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] An aortic balloon counterpulsation catheter comprises a cuff, wherein a guide wire tube, an airway tube, and a blood pressure tube are disposed inside the cuff, a fixing pad is disposed at the left end of the cuff, an outer tube is fixedly connected to the left end of the cuff, an inner tube is disposed at the left end of the outer tube, a tip is disposed at the left end of the inner tube, a balloon is sheathed on the outer side of the inner tube, and two developing marker rings are disposed on the balloon, wherein the left developing marker ring is connected to the inner tube, and the right developing marker ring is connected to the portion of the outer tube extending to the balloon;

[0009] The outer tube adopts a three-cavity structure design, which is respectively connected to the guide wire tube 1, the air guide tube 1 and the blood pressure tube 1. A pressure measuring hole is opened on the outside of the outer tube, and the pressure measuring hole is connected to the blood pressure tube 1.

[0010] Furthermore, the interior of the outer tube is provided with a second guide wire tube, a second air guide tube and a second blood pressure tube. The second guide wire tube is designed to be straight, and its axis is the same as the axis of the outer tube. The second air guide tube and the second blood pressure tube are distributed in a double helix on the outside of the second guide wire tube. The second guide wire tube connects the first guide wire tube with the inner tube, the second air guide tube connects the first air guide tube with the balloon, and the second blood pressure tube connects the pressure measuring hole with the first blood pressure tube.

[0011] Furthermore, the second air guide tube consists of a first fixed spiral portion, an expansion portion and a second fixed spiral portion. The first fixed spiral portion and the second fixed spiral portion are both fixedly bonded to the second guide wire tube. The side of the expansion portion facing the first fixed spiral portion is the expansion surface, and the rest is the non-expansion surface.

[0012] Furthermore, the blood pressure tube 2 is composed of a third fixed spiral portion, an adjusting portion and a fourth fixed spiral portion. The third fixed spiral portion and the fourth fixed spiral portion are both fixedly bonded to the guide wire tube 2, and the adjusting portion is sleeved on the guide wire tube 2. A telescopic portion is provided between the adjusting portion and the third fixed spiral portion. An inner hole is provided on the outer side of the fourth fixed spiral portion, and the inner hole is connected to the pressure measuring hole. The adjusting portion is an elastic spiral pipe, and in an unstretched state, one side is tightly attached to the expansion surface, and there is an adjustment distance between the other side and the corresponding surface of the expansion portion.

[0013] Furthermore, the second fixing helical portion exceeds the fourth fixing helical portion and extends into the balloon.

[0014] Furthermore, the spiral pitch between the first fixing spiral portion and the third fixing spiral portion is greater than the spiral pitch between the expansion portion and the adjustment portion, and a gap is provided between the first fixing spiral portion and the third fixing spiral portion.

[0015] Furthermore, the right end of the blood pressure tube 1 is provided with an inner Luer cone connector seat.

[0016] Furthermore, the right end of the airway tube 1 is provided with an outer conical Luer connector seat and a one-way valve.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention provides a pressure measuring hole on the opposite side of the tip side of the balloon, that is, a pressure measuring hole is set on the outer tube, and then the pressure measuring path is realized by the three-cavity structure design of the outer tube part, and the blood pressure tube is extended to connect with the pressure detection equipment. This design can realize the aortic balloon counterpulsation catheter as a catheter to intervene in the aorta through the subclavian artery or the carotid artery, solving the problem that the aortic balloon counterpulsation catheter cannot be implanted due to femoral artery vascular abnormalities in clinical practice; and, after implantation through the subclavian artery or the carotid artery, the patient's lower limbs can be moved, which can alleviate the risk of complications caused by the patient lying down for a long time during treatment. Compared with similar products on the current market, this design provides better product use conditions for the operator, is of great significance to patients, and has broad application prospects.

[0019] 2. The three-chamber structure of the outer tube of the present invention adopts a double-helix design, which can greatly optimize the outer tube structure without affecting the bending of the outer tube. At the same time, the spiral pitch of the blood pressure tube increases and decreases synchronously with the inflation and deflation of the balloon. During the inflation process, the increase in the spiral pitch can ensure that more blood flow details can be captured, while during deflation, the decrease in the spiral pitch helps to reduce the pressure on the blood vessels caused by the drop in blood pressure, providing a more comfortable monitoring experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the outer tube structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the outer tube of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the second airway tube of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the second blood pressure tube of the present invention.

[0025] Figure numerals: 1, cuff; 2, guide wire tube 1; 3, airway tube 1; 4, blood pressure tube 1; 5, fixing pad; 6, outer tube; 61, guide wire tube 2; 62, airway tube 2; 621, first fixing spiral portion; 622, expansion portion; 623, second fixing spiral portion; 63, blood pressure tube 2; 631, third fixing spiral portion; 632, telescopic portion; 633, adjustment portion; 634, fourth fixing spiral portion; 635, inner hole; 64, pressure measuring hole; 7, inner tube; 8, balloon; 9, tip; 10, development marking ring. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] Example 1, as Figure 1-Figure 5 As shown, an aortic balloon counterpulsation catheter includes a cuff 1, wherein a guide wire tube 2, an airway tube 3, and a blood pressure tube 4 are disposed inside the cuff 1, a fixing pad 5 is disposed at the left end of the cuff 1, an outer tube 6 is fixedly connected to the left end of the cuff 1, an inner tube 7 is disposed at the left end of the outer tube 6, a tip 9 is disposed at the left end of the inner tube 7, a balloon 8 is sheathed on the outer side of the inner tube 7, and the balloon 8 is provided with two developing marker rings 10, the left developing marker ring 10 is connected to the inner tube 7, and the right developing marker ring 10 is connected to the portion of the outer tube 6 extending to the balloon 8;

[0028] The outer tube 6 adopts a three-cavity structure design, which is respectively connected to the guide wire tube 2, the airway tube 3 and the blood pressure tube 4. A pressure measuring hole 64 is opened on the outside of the outer tube 6, and the pressure measuring hole 64 is connected to the blood pressure tube 4.

[0029] The right end of the blood pressure tube 4 is provided with an inner Luer cone connector seat.

[0030] The right end of the airway tube 3 is provided with an outer conical Luer connector seat and a one-way valve.

[0031] When in use, the balloon 8 is located 1-2 cm below the left subclavian artery and above the renal artery. During use, the balloon 8 is inflated and deflated once in each cardiac cycle according to a ratio of 1:1 / 1:2 / 1:3. The 1 in front represents the number of inflation and deflation times, and the 1.2.3 behind refers to the cardiac cycle. The inflation and deflation of different proportions are carried out according to the setting of the aortic balloon counterpulsation pump. At the same time, the present invention sets a pressure measuring hole 64 on the opposite side of the tip 9 of the balloon 8, that is, a pressure measuring hole 64 is set on the outer tube 6, and the pressure measuring path is designed by the three-chamber structure of the outer tube 6. The blood pressure tube 4 is extended to connect with the pressure detection equipment. This design can realize the aortic balloon counterpulsation catheter as a catheter to intervene in the aorta through the subclavian artery or the carotid artery, solving the problem that the aortic balloon counterpulsation catheter cannot be inserted due to femoral artery vascular abnormalities in clinical practice; moreover, the patient's lower limbs can be moved after being inserted through the subclavian artery or the carotid artery, which can alleviate the risk of complications caused by the patient lying down for a long time during the treatment. Compared with similar products on the current market, this design provides better product use conditions for the operator, is of great significance to patients, and has broad application prospects.

[0032] Embodiment 2, based on the above embodiment, further includes that the outer tube 6 is provided with a guide wire tube 2 61, an air guide tube 2 62 and a blood pressure tube 2 63. The guide wire tube 2 61 is designed in a straight line, and its axis is the same as the axis of the outer tube 6. The air guide tube 2 62 and the blood pressure tube 2 63 are distributed in a double helix on the outside of the guide wire tube 2 61. The guide wire tube 2 61 connects the guide wire tube 1 2 and the inner tube 7, the air guide tube 2 62 connects the air guide tube 1 3 and the balloon 8, and the blood pressure tube 2 63 connects the pressure measuring hole 64 and the blood pressure tube 1 4.

[0033] By adopting the three-cavity structure design of this embodiment, conduction is achieved without affecting the bending of the outer tube 6.

[0034] Embodiment three, based on the above embodiment, further includes that the air guide tube 2 62 is composed of a first fixed spiral portion 621, an expansion portion 622 and a second fixed spiral portion 623, the first fixed spiral portion 621 and the second fixed spiral portion 623 are both fixedly bonded to the guide wire tube 2 61, the side of the expansion portion 622 facing the first fixed spiral portion 621 is the expansion surface, and the rest are non-expansion surfaces.

[0035] Furthermore, the blood pressure tube 2 63 is composed of a third fixed spiral portion 631, an adjusting portion 633 and a fourth fixed spiral portion 634. The third fixed spiral portion 631 and the fourth fixed spiral portion 634 are both fixedly bonded to the guide wire tube 2 61. The adjusting portion 633 is sleeved on the guide wire tube 2 61. A telescopic portion 632 is provided between the adjusting portion 633 and the third fixed spiral portion 631. An inner hole 635 is provided on the outer side of the fourth fixed spiral portion 634. The inner hole 635 is connected to the pressure measuring hole 64. The adjusting portion 633 is an elastic spiral pipe, and in the unstretched state, one side is close to the expansion surface, and there is an adjustment distance between the other side and the corresponding surface of the expansion portion 622.

[0036] During inflation, the overall pressure of the airway tube 2 62 increases, so the expansion portion 622 expands under the action of air pressure, and the expansion surface on the expansion portion 622 expands, pushing the adjustment portion 633 to the right relative to the third fixed spiral portion 631. Since the left end of the adjustment portion 633 is restricted by the third fixed spiral portion 631, the expansion surface will cause the adjustment portion 633 to be stretched to the right after expansion, and the spiral pitch of the adjustment portion 633 increases, and the telescopic portion 632 contracts, which does not affect the stretching of the adjustment portion 633. The increase in spiral pitch can ensure that more blood flow details can be captured. During deflation, the adjustment portion 633 recovers under the action of its own elastic force, and the reduction in spiral pitch helps to reduce the pressure on the blood vessels caused by the drop in blood pressure, providing a more comfortable monitoring experience. It should be noted that when the adjustment portion 633 is not stretched, there is a certain distance between it and the guide wire tube 2 61, so that the adjustment portion 633 can be stretched more stably.

[0037] At the same time, the regulating part 633 is close to the pressure measuring hole 64, which can timely and effectively feedback the blood pressure changes, and the control effect is better.

[0038] Embodiment 4, based on the above embodiment, further includes: the second fixing spiral portion 623 exceeds the fourth fixing spiral portion 634 and extends into the balloon 8, so that the air pressure transmission of the second airway tube 62 is more stable.

[0039] Embodiment 5, based on the above embodiment, further includes that the spiral pitch between the first fixed spiral portion 621 and the third fixed spiral portion 631 is greater than the spiral pitch between the expansion portion 622 and the adjustment portion 633, and a gap is provided between the first fixed spiral portion 621 and the third fixed spiral portion 631.

[0040] This design makes the spiral pitch of the fixed part larger, reduces the transmission resistance, and has little influence on the bending of the outer tube 6, while saving materials.

[0041] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intraaortic balloon counterpulsation catheter, comprising a cuff (1), characterized in that: The sleeve (1) is provided with a guide wire tube (2), an airway tube (3) and a blood pressure tube (4) inside, a fixing pad (5) is provided at the left end of the sleeve (1), an outer tube (6) is fixedly connected to the left end of the sleeve (1), an inner tube (7) is provided at the left end of the outer tube (6), a tip (9) is provided at the left end of the inner tube (7), a balloon (8) is provided on the outer side of the inner tube (7), and the balloon (8) is provided with two developing marker rings (10), the left developing marker ring (10) is connected to the inner tube (7), and the right developing marker ring (10) is connected to the portion of the outer tube (6) extending to the balloon (8); The outer tube (6) adopts a three-cavity structure design, and the three-cavity structure is respectively connected with the guide wire tube (2), the air guide tube (3) and the blood pressure tube (4). The outer side of the outer tube (6) is provided with a pressure measuring hole (64), which is connected with the blood pressure tube (4). The inner side of the outer tube (6) is provided with the guide wire tube (61), the air guide tube (62) and the blood pressure tube (63). The guide wire tube (61) is designed in a straight line, and its axis is the same as the axis of the outer tube (6). The air guide tube (62) and the blood pressure tube (63) are distributed in a double helix on the outer side of the guide wire tube (61). The guide wire tube (61) is connected with the guide wire tube (2) and the inner tube (7), the air guide tube (62) is connected with the air guide tube (3) and the balloon (8), and the blood pressure tube (63) is connected with the pressure measuring hole (64) and the blood pressure tube (4).

2. The intraaortic balloon counterpulsation catheter according to claim 1, characterized in that: The second air guide tube (62) is composed of a first fixed spiral portion (621), an expansion portion (622) and a second fixed spiral portion (623). The first fixed spiral portion (621), the expansion portion (622) and the second fixed spiral portion (623) are all fixedly bonded to the second guide wire tube (61). The side of the expansion portion (622) facing the first fixed spiral portion (621) is the expansion surface, and the rest are non-expansion surfaces.

3. The intraaortic balloon counterpulsation catheter according to claim 2, characterized in that: The blood pressure tube 2 (63) is composed of a third fixed spiral portion (631), an adjusting portion (633) and a fourth fixed spiral portion (634). The third fixed spiral portion (631) and the fourth fixed spiral portion (634) are both fixedly bonded to the guide wire tube 2 (61). The adjusting portion (633) is sleeved on the guide wire tube 2 (61). A telescopic portion (632) is provided between the adjusting portion (633) and the third fixed spiral portion (631). An inner hole (635) is provided on the outer side of the fourth fixed spiral portion (634). The inner hole (635) is connected to the pressure measuring hole (64). The adjusting portion (633) is an elastic spiral pipe, and in an unstretched state, one side is in close contact with the expansion surface, and there is an adjustment distance between the other side and the corresponding surface of the expansion portion (622).

4. The intraaortic balloon counterpulsation catheter according to claim 3, characterized in that: The second fixing helical portion (623) exceeds the fourth fixing helical portion (634) and extends into the balloon (8).

5. The intraaortic balloon counterpulsation catheter according to claim 4, characterized in that: The spiral pitch between the first fixed spiral portion (621) and the third fixed spiral portion (631) is greater than the spiral pitch between the expansion portion (622) and the adjustment portion (633), and a gap is provided between the first fixed spiral portion (621) and the third fixed spiral portion (631).

6. The intraaortic balloon counterpulsation catheter according to any one of claims 1 to 5, characterized in that: The right end of the blood pressure tube (4) is provided with an inner Luer cone connector seat.

7. The intraaortic balloon counterpulsation catheter according to claim 6, characterized in that: The right end of the air guide tube 1 (3) is provided with an outer conical Luer connector seat and a one-way valve.

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