Guide wire for IABP balloon

Abstract

The utility model discloses a guide wire for an IABP balloon, which enables the operation of the guide wire entering an aorta to be simpler and reduces operation complications, a guide wire main body comprises a guide wire tip, a bouncing part and a guide wire part which are sequentially arranged, and the elasticity and the toughness of the bouncing part are greater than those of the guide wire tip and the guide wire part.

Description

Technical Field

[0001] The utility model relates to the technical field of guide wires used for IABP balloons, in particular to a guide wire used for IABP balloons. Background Art

[0002] Aortic dissection is a contraindication for IABP, but patients who have undergone surgery for aortic dissection can use IABP, but there is currently no IABP kit specifically for use after aortic dissection surgery. The guidewire in the existing IABP balloon kit is difficult to operate when implanting a prosthesis in patients who have undergone surgery for aortic dissection, and it is not easy to insert the guidewire into the prosthesis.

[0003] The IABP guidewire of the existing kit is a "J"-shaped guidewire with a relatively soft tip. However, the aorta of most patients with aortic dissection has a large curvature, or even an acute angle, which makes it difficult to deliver the IABP guidewire. The guidewire tip is easily stuck in the aortic curvature and cannot move forward (e.g. Figure 3 In addition, the IABP guide wire of the existing kit can easily enter the cavity between the trunk stent and the aortic wall, but cannot reach the inside of the trunk stent (as shown in FIG. Figure 3 shown). Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a guidewire for an IABP balloon, which simplifies the operation of the guidewire entering the aorta and reduces operational complications.

[0005] One of the purposes of the utility model is achieved by the following technical solution:

[0006] A guidewire for an IABP balloon comprises a guidewire body, wherein the guidewire body comprises a guidewire tip, a bouncing portion and a guidewire portion which are arranged in sequence, wherein the guidewire tip is a linear structure, and the elasticity and toughness of the bouncing portion are greater than those of the guidewire tip and the guidewire portion.

[0007] Furthermore, the diameter of the middle portion of the bouncing portion is smaller than the diameters of the two ends thereof.

[0008] Furthermore, the guide wire tip, the bouncing portion and the guide wire portion are made of the same material, and the surface of the bouncing portion is provided with a PVD coating.

[0009] Furthermore, the surface of the guide wire portion is provided with a PTFE coating.

[0010] Furthermore, the surface of the guide wire tip is provided with a hydrophilic lubricating coating.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] In addition, the setting of the bouncing part can easily pass through the aortic curvature and the cavity between the trunk stent and the aortic wall by bouncing during the guidewire delivery process, so that it is easier to enter the aortic trunk stent (aortic true lumen), thereby reducing the probability of the guidewire entering the false lumen of aortic dissection and reducing complications.

[0013] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of this embodiment;

[0015] Figure 2 It is a partial schematic diagram of this embodiment;

[0016] Figure 3 It is a schematic diagram of the guide wire body in the prior art being stuck in the aortic curvature and the cavity between the elephant trunk stent and the aortic wall during implantation;

[0017] Figure 4 It is a schematic diagram of the guide wire body in this embodiment bouncing through the aortic curvature and the cavity between the elephant trunk stent and the aortic wall during the implantation process;

[0018] Figure 5 It is a schematic diagram of the structure of the balloon catheter;

[0019] Figure 6 Schematic diagram of related consumables in this embodiment.

[0020] In the figure: 1. guide wire tip; 2. bounce part; 3. guide wire part. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] Reference Figure 1-6 , a guidewire for IABP balloon, mainly used for IABP balloon after aortic dissection surgery. In addition to the guidewire body, the supporting equipment also includes a T-handle, a marking sleeve, a Y-connector, a male luer connector, a female luer connector (central lumen), a STAT-GARD cuff, an extracorporeal tubing, a one-way valve, an air cavity core, a universal sheath seal sleeve, a suture pad, a balloon membrane, an extension tube, a 30cc syringe, an angiographic needle, a sheath dilator and a series of other parts and consumables. The basic working principle is: through femoral artery puncture, a balloon counterpulsation catheter is placed in the patient's descending aorta. After the start of the diastole (when the aortic valve is closed), the balloon is inflated by the intra-aortic balloon counterpulsation pump to increase coronary perfusion; before the start of the systole, the balloon is quickly emptied to reduce the patient's cardiac afterload, reduce cardiac work, and reduce myocardial oxygen consumption.

[0025] In order to make it easier for the guidewire body to enter the aortic trunk stent, reduce the probability of the guidewire entering the false lumen of aortic dissection, and reduce complications. The guidewire body in this embodiment includes a guidewire tip 1, a bouncing portion 2, and a guidewire portion 3 arranged in sequence, and the traditional J-shaped guidewire tip 1 is changed into a linear structure. When the guidewire tip 1 enters the cavity between the trunk stent and the aortic wall, the top of the guidewire tip 1 is used to abut against the entrance of the cavity between the trunk stent and the aortic wall, so as to facilitate the bending and bouncing reset of the bouncing portion 2 to enter the trunk stent. Therefore, it is necessary to make the elasticity and toughness of the bouncing portion 2 greater than the guidewire tip 1 and the guidewire portion 3.

[0026] Specifically, in order to facilitate the bending and bouncing of the bouncing portion 2, the diameter of the middle part of the bouncing portion 2 is smaller than the diameter of the two ends of the bouncing portion 2 in this embodiment. That is, the diameter of the bouncing portion 2 gradually decreases from the guide wire tip 1 to the middle part of the bouncing portion 2, and from the guide wire portion 3 to the middle part of the bouncing portion 2. Since the hardness and toughness of the guide wire body must be enhanced to achieve the bending and bouncing of the guide wire body, the appropriate reduction of the diameter of the bouncing portion 2 is not only convenient for bending, but also can more accurately control the bending position of the guide wire body, thereby reducing the uncertainty of the guide wire body in the patient's body.

[0027] In order to reduce the difficulty of production and maintain the consistency and structural strength of the guidewire body, the present embodiment makes the guidewire tip 1, the bouncing portion 2 and the guidewire portion 3 made of the same material and can be integrally formed.

[0028] As another implementation, the present embodiment may provide a PVD coating on the surface of the bouncing portion 2. The PVD coating can significantly improve the hardness of the surface of the bouncing portion 2, and at the same time, it has the characteristics of high toughness and high oxidation resistance, and improves the rebound ability of the bouncing portion 2. At the same time, under the same film thickness, the PVD coating has a greater adhesion to the surface of the workpiece, can be bent more than 90 degrees without cracking or peeling, has a higher hardness, better wear resistance and corrosion resistance, and more stable performance.

[0029] As another implementation, this embodiment also provides a PTFE coating on the surface of the guide wire portion 3 to improve the wear resistance of the guide wire portion 3, and also has the effect of increasing the hardness of the guide wire portion 3. It also has a certain degree of lubricity, reduces friction, reduces tissue damage, and facilitates the penetration of the guide wire body.

[0030] As another embodiment, the surface of the guidewire tip 1 is provided with a hydrophilic lubricating coating, such as HYDAK or PVP. The HYDAK coating is composed of an acrylic base coating and a lubricating top coating containing hyaluronic acid, which can improve the lubricity of the guidewire tip 1 and reduce the amount of friction required for the guidewire tip 1 to move in the body. At the same time, HYDAK is thin and flexible and can also be used for the bouncing part 2. The PVP coating is stable, non-toxic and non-reactive, and can also be used for the guidewire tip 1. After contacting with water, it becomes extremely slippery, reducing the friction between the catheter and the inner wall of the human body, alleviating the patient's pain, reducing the chance of infection, and facilitating the operation of medical staff.

[0031] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A guidewire for an IABP balloon, comprising a guidewire body, characterized in that: The guidewire body comprises a guidewire tip (1), a bouncing portion (2) and a guidewire portion (3) which are arranged in sequence; the guidewire tip (1) is a linear structure, and the elasticity and toughness of the bouncing portion (2) are greater than those of the guidewire tip (1) and the guidewire portion (3).

2. A guide wire for an IABP balloon as claimed in claim 1, characterized in that: The diameter of the middle portion of the bouncing portion (2) is smaller than the diameters of its two ends.

3. A guide wire for an IABP balloon as claimed in claim 1 or 2, characterized in that: The guide wire tip (1), the bouncing portion (2) and the guide wire portion (3) are made of the same material, and the surface of the bouncing portion (2) is provided with a PVD coating.

4. A guide wire for an IABP balloon as claimed in claim 1 or 2, characterized in that: The surface of the wire guide portion (3) is provided with a PTFE coating.

5. A guide wire for an IABP balloon as claimed in claim 1 or 2, characterized in that: The surface of the guide wire tip (1) is provided with a hydrophilic lubricating coating.

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