CN219110567U - Improved guide wire for radial artery puncture - Google Patents

Abstract

The utility model provides an improved guide wire for radial artery puncture, which comprises a guide wire body and a head end, and the acute angle between the guide wire body and the head end is 15°-40°; The hydrophilic section of the guidewire and the non-hydrophilic section of the guidewire, the hydrophilic section of the guidewire is connected to the head end and the surface is provided with a super slippery coating, and the total length of the hydrophilic section of the guidewire and the head end does not exceed 2cm. The improved guide wire described in the utility model can not only provide the feel feedback of the guide wire, but also precisely control the advancing direction of the head end of the guide wire, and at the same time take into account the passability of the guide wire, which can effectively improve the success rate of radial artery puncture.

Description

A modified guide wire for radial artery puncture

technical field

The utility model relates to the technical field of medical instruments, in particular to an improved guide wire for radial artery puncture.

Background technique

Radial artery interventional therapy is a treatment method between medical and surgical treatment. Under the guidance of the interventional imaging system DSA, the therapeutic drugs and equipment are directly applied to the lesion, which is safe, minimally invasive, with few side effects and low cost of treatment. Low cost and fast postoperative recovery. It can have a good curative effect on tumors, orthopedic diseases, and cardiovascular diseases. Radial artery-coronary angiography is currently the best way to diagnose and treat coronary heart disease. The surgeon can intuitively see the extent and degree of coronary artery disease. The diagnostic rate for coronary heart disease is over 98%. The "gold standard" for coronary heart disease diagnosis.

At present, the commonly used radial artery puncture guide wires are mainly divided into two categories: super-smooth hydrophilic guide wires represented by Terumo and non-super-smooth steel wires represented by Apter. The ultra-smooth hydrophilic guide wire has good passability, but the feel feedback effect is poor after the guide wire strays into the interlayer, and it is not easy to find it in time; the non-super-smooth steel wire has good feel feedback, but the passability is not good. In addition, the tips of these two types of guide wires are both straight, and the forward direction of the guide wire cannot be precisely controlled. If the blood vessel is thin or the angle of the puncture sheath is too large, the guide wire can easily enter the intima of the blood vessel and form a dissection hematoma, resulting in puncture failure. .

Utility model content

In order to solve the above problems, the utility model provides an improved guide wire for radial artery puncture, which can not only provide the feel feedback of the guide wire, but also precisely control the forward direction of the guide wire head, and at the same time take into account the passability of the guide wire, which can effectively improve the diameter of the radial artery. arterial puncture success rate.

In order to achieve the above purpose, the utility model provides an improved guide wire for radial artery puncture, which includes a guide wire body and a head end, and the acute angle between the guide wire body and the head end is 15°-40°;

The guidewire body includes a guidewire hydrophilic section and a guidewire non-hydrophilic section connected in sequence. The guidewire hydrophilic section is connected to the head end and is provided with a super-slip coating on the surface. The total length of the guidewire hydrophilic section and the head end is not More than 2cm.

Preferably, the acute angle between the head end and the guide wire body is 30°.

Preferably, the length of the head end does not exceed 2mm.

Preferably, the length of the hydrophilic segment of the guide wire is no more than 2 cm.

Preferably, the super slippery coating includes one or more of polyethylene glycol coating, polysaccharide coating, polyvinylpyrrolidone coating and silicon coating.

Compared with the prior art, the utility model has the beneficial effects:

1. The improved guide wire provided by the utility model has a head end with a certain angle. The head end of a general linear guide wire meets the resistance of the blood vessel wall and is easy to damage the intima of the blood vessel. The 15°-40° bent head of the utility model The tip design helps the user to precisely control the forward direction of the guide wire tip. The bent tip touches the intima of the blood vessel and is not easy to damage the vessel wall. It is easier for the doctor to sense the resistance and rotate the guide wire, and the guide wire will move toward the tip. The end of the guide wire can be advanced in the direction of bending, which can realize the precise control of the direction of the guide wire in the narrow radial artery.

2. In the improved guide wire described in the utility model, the hydrophilic section and the head end of the guide wire are provided with a super-slip coating, which is hydrophilic, and the total length of the hydrophilic section and the head end of the guide wire does not exceed 2 cm. Compared with the existing The existing technology shortens the coating position of the super-smooth coating. On the basis of retaining the super-smooth coating to reduce the resistance at the front end of the guide wire and enhance the vascular passage of the guide wire, the longer non-hydrophilic section (without super-smooth coating) can Provide better tactile feedback.

Description of drawings

Fig. 1 is the structural representation of the improved guide wire used for radial artery puncture described in the utility model;

Among them, 1 is the non-hydrophilic section of the guide wire, 2 is the hydrophilic section of the guide wire, 3 is the head end, α is the acute angle between the guide wire body and the head end, and the shaded part is the super-smooth coating.

Detailed ways

The technical scheme of the utility model will be described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some, not all, implementations of the application; and the structures shown in the drawings are only schematic and do not represent real objects. It should be noted that, based on these embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art belong to the protection scope of the present application.

In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention.

As shown in Figure 1, the utility model provides an improved guide wire for radial artery puncture, including a guide wire body and a head end 3, and the acute angle between the guide wire body and the head end is 15°-40° The guide wire body includes a guide wire hydrophilic segment 2 and a guide wire non-hydrophilic segment 1 connected in sequence, the guide wire hydrophilic segment 2 is connected to the head end 3 and the surface is provided with a super slippery coating, the guide wire hydrophilic segment and the guide wire The total length of the head end does not exceed 2cm. In the present utility model, the guide wire body is generally linear; The hydrophilic head ends 3 are connected sequentially, and the head ends 3 are also linear.

In some specific implementations of the present utility model, the length of the guide wire body is 25-35 cm, the total length of the guide wire hydrophilic section 2 and the head end is not more than 2 cm, the length of the head end is 1-2 mm, and ∠α is 15°-40 °; In a preferred embodiment, the length of the guide wire body is 30mm, the length of the hydrophilic section is 1cm, the length of the head end is 1mm, and ∠α is 30°. Within the angle range of ∠α defined by the utility model, it can improve the ease of piercing the hose when the traditional linear guide wire advances. If the angle is too large, it is not conducive to entering the puncture hose, and if the angle is too small, it will have no effect on direction adjustment.

In some specific embodiments of the present utility model, the improved guide wire is integrally formed of non-hydrophilic material, and the hydrophilic section 2 and the head end 3 of the guide wire are coated with one or more layers of super slippery material on the surface of the non-hydrophilic material. The coating can reduce the resistance at the front end of the guide wire and enhance the vascular passage of the guide wire; in a specific embodiment, the non-hydrophilic material is steel wire, which is low in cost and can provide certain tactile feedback.

In some embodiments of the present invention, the ultra-slip coating includes, but is not limited to, one or more of polyethylene glycol coatings, polysaccharide coatings, polyvinylpyrrolidone coatings, and silicon coatings. Various coatings known in the art that can be coated on the surface of the guide wire and play a lubricating role are applicable to the device.

The usage method of the improved guide wire described in the utility model is consistent with that of the traditional guide wire. The short water section can more accurately control the direction of the blood vessel. After shortening the hydrophilic section, the non-hydrophilic section can maintain lubrication and provide better tactile feedback, which can significantly improve the success rate of guide wire puncture. After the improved guide wire enters the blood vessel, exit the flexible tube, send it into the puncture hard sheath along the improved guide wire, and finally pull out the guide wire and the inner core of the puncture sheath. If the puncture sheath returns to blood well, the radial artery puncture is considered successful.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present utility model.

Claims (5)

1. An improved guide wire for radial artery puncture is characterized by comprising a guide wire body and a head end, wherein an acute angle between the guide wire body and the head end is 15-40 degrees;

the guide wire body comprises a guide wire hydrophilic section and a guide wire non-hydrophilic section which are connected in sequence, wherein the guide wire hydrophilic section is connected with the head end, the surfaces of the guide wire hydrophilic section and the head end are both provided with super-slip coatings, and the total length of the guide wire hydrophilic section and the head end is not more than 2cm.

2. The improved guidewire of claim 1, wherein the acute included angle between the head end and the guidewire body is 30 °.

3. The improved guidewire of claim 1 or 2, wherein the head end length is no more than 2mm.

4. The improved guidewire of claim 1, wherein the hydrophilic segment of the guidewire is no more than 2cm in length.

5. The improved guidewire of claim 1, wherein the ultra-slip coating comprises one or more of a polyethylene glycol coating, a polysaccharide coating, a polyvinylpyrrolidone coating, and a silicon coating.

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