IABP balloon catheter auxiliary anticoagulation device

Abstract

The invention belongs to the technical field of aorta balloon catheters, and particularly relates to an IABP balloon catheter auxiliary anticoagulation device which comprises a guide steel wire, the guide steel wire is sleeved with a balloon and two sharp soft caps, the balloon is of a tubular structure, the two sharp soft caps are each in a hollow circular truncated cone shape, and the ends, close to each other, of the two sharp soft caps are fixedly connected to the two ends of the balloon respectively. A plurality of silica gel sheets are distributed on the outer side of the balloon in an array mode along the circumference, the silica gel sheets have radians, the silica gel sheets are fixedly connected with the two sharp soft caps, first anti-coagulation coatings are arranged on the two faces of each silica gel sheet, the two ends of each silica gel sheet have gradients, and second anti-coagulation coatings are arranged at the positions, between every two adjacent silica gel sheets, of the outer side of the balloon. And the second anti-coagulation coating is connected with the adjacent first anti-coagulation coating. According to the invention, the first anti-coagulation coating on one side is separated from the blood vessel wall, so that the friction between the first anti-coagulation coating and the blood vessel wall can be reduced, and the attenuation condition of the anti-coagulation effect is slowed down.

Description

Technical Field

[0001] The invention belongs to the technical field of aortic balloon catheters, and in particular relates to an IABP balloon catheter auxiliary anticoagulation device. Background Art

[0002] The IABP balloon catheter can effectively increase diastolic blood pressure and coronary artery blood perfusion by inflating during diastole and deflating during systole, while reducing the afterload of the heart and myocardial oxygen consumption, thereby improving the patient's hemodynamic state.

[0003] The traditional IABP balloon catheter is placed in the cardiovascular cavity 1 to 2 cm below the opening of the left subclavian artery. The balloon is inflated and then deflated during diastole, alternating between the two procedures. However, the entire placement procedure is prone to thrombotic complications. Some balloons are equipped with drug storage bags on the outside, which are used to release anticoagulants by squeezing the drug storage bags and blood vessels when the balloons are inflated. However, the drug storage bags cannot be very large, which limits the dose of anticoagulants they can carry.

[0004] In order to reduce blood coagulation, the existing IABP balloon catheter replaces the external drug storage bag with an anticoagulant coating, which can continuously exert the anticoagulant effect. However, the expansion of this balloon easily causes the anticoagulant coating to contact the blood vessel wall. The frequency of balloon inflation needs to reach 60 to 100 times per minute, which makes it easy for the anticoagulant coating to partially fall off due to frequent friction with the blood vessel wall, making it difficult to slow down the attenuation of the anticoagulant effect. For this reason, we propose an IABP balloon catheter auxiliary anticoagulation device.

[0005] Invention content

[0006] The purpose of the present invention is to provide an IABP balloon catheter auxiliary anticoagulation device, which separates the first anticoagulation coating on one side from the blood vessel wall, thereby reducing the friction between the first anticoagulation coating and the blood vessel wall to slow down the attenuation of the anticoagulation effect.

[0007] The technical solution adopted by the present invention is as follows:

[0008] An IABP balloon catheter auxiliary anticoagulation device comprises a guide wire, a balloon and two pointed soft caps are sleeved on the outside of the guide wire, the balloon is a tubular structure, the two pointed soft caps are hollow truncated cones, the ends of the two pointed soft caps close to each other are fixedly connected to the two ends of the balloon, a plurality of silicone sheets are distributed along the circumference array on the outside of the balloon, the silicone sheets are curved, the silicone sheets are fixedly connected to the two pointed soft caps, and the first anticoagulation coating is arranged on both sides of the silicone sheets. When working, the balloon and the two pointed soft caps are driven by the guide wire to enter the thoracic artery, the balloon is supplied with air by the IABP outside the artery, and the balloon can move with the beating of the heart, and the balloon is supplied with air during the diastole of the heart. The balloon is inflated to increase the diastolic pressure and coronary pressure. The expansion of the balloon causes several silicone sheets to stretch, the spacing between the silicone sheets increases, and the silicone sheets fold along their own curvature on the same side, driving the first anticoagulant coating on that side to be separated from the blood vessel wall to avoid contact with the blood vessel wall. During the contraction period of the heart, IABP deflates the balloon to reduce the systolic pressure, thereby reducing the afterload of the heart and improving the ejection function of the left ventricle, thereby playing a role in treating cardiovascular diseases. As the balloon shrinks, the silicone sheets are driven closer to each other until they are reset, which can reduce the friction between part of the first anticoagulant coating and the blood vessel wall to slow down the attenuation of the anticoagulant effect, activate the sustained-release effect, and facilitate the long-term action of the first anticoagulant coating near the balloon.

[0009] Both ends of the silicone sheet have slopes to form a streamlined structure, which has less obstruction to blood flow in the artery.

[0010] A second anticoagulant coating is provided on the outside of the balloon between two adjacent silicone sheets. The second anticoagulant coating is connected to the adjacent first anticoagulant coating. The second anticoagulant coating is located outside the balloon in an area not covered by the first anticoagulant coating, thereby playing an anticoagulant role and further reducing anticoagulant blind spots. After the balloon is inflated, the second anticoagulant coating can cover the folded silicone sheet, separating the second anticoagulant coating from the blood vessel wall and reducing the abrasion of the blood vessel wall.

[0011] A first steel ring is fixed on the outside of the two pointed soft caps, and the two first steel rings penetrate the silicone sheet. The first steel rings are used to tighten the pointed soft caps and the silicone sheet, and the connection between the pointed soft caps and the silicone sheet is reinforced to reduce the possibility of being broken after the balloon is expanded.

[0012] A polytetrafluoroethylene layer is fixed to the inner side of the balloon near the guide wire, and both ends of the polytetrafluoroethylene layer radially pass through the inside of the two pointed soft caps. The polytetrafluoroethylene layer serves as an inner lining to provide a buffer between the guide wire and the balloon to reduce direct wear of the guide wire on the balloon. The polytetrafluoroethylene layer can tighten the balloon and the two pointed soft caps to make the fixation between the two more secure.

[0013] A second steel ring is fixed to one end of the two pointed soft caps that are away from each other. The two second steel rings are fixedly connected to the polytetrafluoroethylene layer. The two second steel rings are sleeved on the outside of the guide steel wire to support the thinner areas of the two pointed soft caps and the two edges of the polytetrafluoroethylene layer to reduce the occurrence of the weak position being pulled apart.

[0014] The technical effects achieved by the present invention are:

[0015] The IABP balloon catheter auxiliary anticoagulation device of the present invention, when working, the balloon and two pointed soft caps are driven by the guide wire into the thoracic artery, and the balloon is supplied with air by the IABP outside the artery. The balloon can be inflated with the beating of the heart during the diastole period to increase the diastolic pressure and the pressure of the coronary artery. The expansion of the balloon drives a plurality of silicone sheets to lengthen, the spacing between the silicone sheets is enlarged, and the silicone sheets are folded along their own curvature toward the same side, driving the first anticoagulation coating on this side to be separated from the blood vessel wall to avoid contact with the blood vessel wall. During the systole period of the heart, the IABP deflates the balloon to reduce the systolic pressure, thereby reducing the afterload of the heart and improving the ejection function of the left ventricle, thereby playing a role in treating cardiovascular diseases. As the balloon shrinks, the silicone sheets are driven to approach each other until they are reset, which can reduce the friction between part of the first anticoagulation coating and the blood vessel wall, thereby slowing down the attenuation of the anticoagulation effect, starting the sustained release effect, and facilitating the first anticoagulation coating to act persistently near the balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of an IABP balloon catheter-assisted anticoagulation device of the present invention;

[0017] Figure 2 is a front view of the silicone sheet of the present invention;

[0018] Figure 3 The present invention Figure 2 The enlarged view of point A in the middle;

[0019] Figure 4 It is a front view of two pointed soft hats of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Guide wire; 2. Balloon; 3. Pointed soft cap; 4. Silicone sheet; 5. First anticoagulant coating; 6. Second anticoagulant coating; 7. First steel ring; 8. Polytetrafluoroethylene layer; 9. Second steel ring. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0023] like Figure 1-4 As shown, an IABP balloon catheter auxiliary anticoagulation device comprises a guide wire 1, a balloon 2 and two pointed soft caps 3 are sleeved on the outside of the guide wire 1, the balloon 2 is a tubular structure, the two pointed soft caps 3 are hollow truncated cones, the ends of the two pointed soft caps 3 close to each other are fixedly connected to the two ends of the balloon 2, a plurality of silicone sheets 4 are distributed along the circumference of the outside of the balloon 2, the silicone sheets 4 are curved, the silicone sheets 4 are fixedly connected to the two pointed soft caps 3, and the first anticoagulation coating 5 is provided on both sides of the silicone sheets 4. At the opening of the femoral artery, one end of the guide wire 1 is inserted along the opening and placed in the cardiovascular system 1-2 cm below the opening of the left subclavian artery. When working, the balloon 2 and the two pointed soft caps 3 are driven by the guide wire 1 to enter the thoracic artery, and the balloon 2 is supplied with air by the IABP outside the artery. The balloon 2 can be inflated with the beating of the heart during the diastole period to increase the diastolic pressure and the pressure of the coronary arteries. The expansion of the balloon 2 drives several silicone sheets 4 to lengthen, and the spacing between the silicone sheets 4 is enlarged. The silicone sheets 4 are folded along their own curvature toward the same side, driving the first anticoagulant coating 5 on this side to be separated from the blood vessel wall to avoid contact with the blood vessel wall. During the systole period of the heart, the IABP deflates the balloon 2 to reduce the systolic pressure, thereby reducing the afterload of the heart and improving the ejection function of the left ventricle, thereby playing a role in treating cardiovascular diseases. As the balloon 2 shrinks, the silicone sheets 4 are driven closer to each other until they are reset, which can reduce the friction between part of the first anticoagulant coating 5 and the blood vessel wall to slow down the attenuation of the anticoagulant effect, activate the sustained release effect, and facilitate the long-term effect of the first anticoagulant coating 5 near the balloon 2.

[0024] The width of the silicone sheet 4 is smaller than the radius of the balloon 2, and much smaller than the width of the balloon 2 after expansion, so that the silicone sheet 4 does not occupy a large space, which makes it convenient for the balloon 2 to drive the silicone sheet 4 to pass through the artery, and the silicone sheet 4 is made of medical grade silicone material, which has no toxic side effects on patients. After the balloon 2 is shrunk, the distance between the silicone sheets 4 is smaller than the width of the silicone sheet 4, which makes it convenient for the first anticoagulant coating 5 to radiate to the outer surface of the balloon 2 as much as possible, reducing anticoagulation blind spots.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, both ends of the silicone sheet 4 have slopes to form a streamlined structure, which has less obstruction to blood flow in the artery.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, a second anticoagulant coating 6 is provided on the outside of the balloon 2 between two adjacent silicone sheets 4. Heparin can be used for both the second anticoagulant coating 6 and the first anticoagulant coating 5. The second anticoagulant coating 6 is connected to the adjacent first anticoagulant coating 5. The second anticoagulant coating 6 is located outside the balloon 2 in an area not covered by the first anticoagulant coating 5, thereby playing an anticoagulant role and further reducing anticoagulant blind spots. Moreover, after the balloon 2 is inflated, the second anticoagulant coating 6 can cover the folded silicone sheet 4, thereby separating the second anticoagulant coating 6 from the blood vessel wall and reducing the abrasion of the blood vessel wall.

[0027] like Figure 2 and Figure 3 As shown, the outside of the two pointed soft caps 3 are fixed with first steel rings 7, and the first steel rings 7 can be made of medical grade stainless steel, which has no toxic side effects on patients. The two first steel rings 7 penetrate the silicone sheet 4, and the first steel rings 7 are used to tighten the pointed soft caps 3 and the silicone sheet 4, and reinforce the connection between the pointed soft caps 3 and the silicone sheet 4 to reduce the possibility of being broken after the balloon 2 is expanded.

[0028] like Figure 3 and Figure 4 As shown, a polytetrafluoroethylene layer 8 is fixed to the inner side of the balloon 2 near the guide wire 1, and both ends of the polytetrafluoroethylene layer 8 radially pass through the inside of the two pointed soft caps 3 respectively. The polytetrafluoroethylene layer 8 serves as an inner lining, has no toxic side effects on patients, and acts as a buffer between the guide wire 1 and the balloon 2 to reduce the direct wear of the guide wire 1 on the balloon 2, and the polytetrafluoroethylene layer 8 can tighten the balloon 2 and the two pointed soft caps 3, making the fixation between the two more secure.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, a second steel ring 9 is fixed to one end of the two pointed soft caps 3 that is away from each other. Both second steel rings 9 can be made of medical grade stainless steel, which has no toxic side effects on patients. Both second steel rings 9 are fixedly connected to the polytetrafluoroethylene layer 8. Both second steel rings 9 are sleeved on the outside of the guide wire 1 to support the thinner areas of the two pointed soft caps 3 and the two edges of the polytetrafluoroethylene layer 8 to reduce the occurrence of the weak position being pulled apart.

[0030] The working principle of the present invention is as follows: during operation, the guide wire 1 drives the balloon 2 and the two pointed soft caps 3 into the thoracic artery, and the balloon 2 is supplied with air by the IABP outside the artery. The balloon 2 can be inflated with the beating of the heart during the diastole period to increase the diastolic pressure and the pressure of the coronary artery. The expansion of the balloon 2 drives a plurality of silicone sheets 4 to lengthen, and the spacing between the silicone sheets 4 is enlarged. The silicone sheets 4 are folded along their own curvature toward the same side, driving the first anticoagulant coating 5 on this side to be separated from the blood vessel wall to avoid contact with the blood vessel wall. During the systole period of the heart, the IABP deflates the balloon 2 to reduce the systolic pressure, thereby reducing the afterload of the heart and improving the ejection function of the left ventricle, thereby playing a role in treating cardiovascular diseases. As the balloon 2 shrinks, the silicone sheets 4 are driven to approach each other until they are reset, which can reduce the friction between part of the first anticoagulant coating 5 and the blood vessel wall, thereby slowing down the attenuation of the anticoagulant effect, starting the sustained release effect, and facilitating the first anticoagulant coating 5 to act persistently near the balloon 2.

[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. An IABP balloon catheter-assisted anticoagulation device, comprising a guide wire (1), characterized in that: The guide wire (1) is externally sleeved with a balloon (2) and two pointed soft caps (3); the balloon (2) is of a tubular structure; the two pointed soft caps (3) are both hollow truncated cones; the ends of the two pointed soft caps (3) close to each other are respectively fixedly connected to the two ends of the balloon (2); a plurality of silicone sheets (4) are distributed along a circumferential array on the outside of the balloon (2); the silicone sheets (4) are curved; the silicone sheets (4) are fixedly connected to the two pointed soft caps (3); and the first anticoagulant coating (5) is provided on both sides of the silicone sheet (4).

2. The IABP balloon catheter-assisted anticoagulation device according to claim 1, characterized in that: Both ends of the silicone sheet (4) have slopes.

3. The IABP balloon catheter-assisted anticoagulation device according to claim 1, characterized in that: A second anticoagulant coating (6) is provided on the outer side of the balloon (2) between two adjacent silicone sheets (4), and the second anticoagulant coating (6) is connected to the adjacent first anticoagulant coating (5).

4. The IABP balloon catheter-assisted anticoagulation device according to claim 1, characterized in that: A first steel ring (7) is fixed to the outside of the two pointed soft caps (3), and the two first steel rings (7) penetrate the silicone sheet (4).

5. The IABP balloon catheter-assisted anticoagulation device according to claim 1, characterized in that: A polytetrafluoroethylene layer (8) is fixed to the inner side of the balloon (2) close to the guide wire (1), and two ends of the polytetrafluoroethylene layer (8) respectively pass through the inside of the two pointed soft caps (3) in the radial direction.

6. The IABP balloon catheter-assisted anticoagulation device according to claim 5, characterized in that: A second steel ring (9) is fixed to the ends of the two pointed soft caps (3) that are away from each other, the two second steel rings (9) are fixedly connected to the polytetrafluoroethylene layer (8), and the two second steel rings (9) are sleeved on the outside of the guide wire (1).

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