CN203724600U - Medical guide wire - Google Patents

Abstract

The utility model discloses a medical guide wire, which comprises a guide wire main body and a bent-shaped head end located at the head end of the guide wire main body. The guide wire of the utility model has a bend-shaped head end and a bend-shaped tail end, so that both the head and the tail end can be safely introduced into the body, making it more convenient for the operator to use, and at the same time , Reversible guide wire lead in direction, greatly increase its function, shorten the operation time.

Description

a medical guide wire

technical field

The utility model relates to a medical guide wire, in particular to a multifunctional medical guide wire for minimally invasive treatment.

Background technique

The main function of the medical guide wire is to guide and position the guide wire in the body during diagnosis and minimally invasive treatment, and guide the catheter or introducer used for treatment or inspection to the target site. Therefore, the medical guide wire needs to be shaped at the head end and processed in terms of texture hardness so that it can be pressed into a bifurcated or curved lumen without damage following the shape of the lumen.

General guide wire The head end (or called the front end) has been bent and shaped (shaping), as shown in Figure 1, to meet the requirements of the operation. As shown in Figure 2, in order to temporarily bend adaptively according to needs, there is also a guide wire with a plastic head end, that is, the head end can be temporarily shaped according to needs, and this guide wire is called a plastic guide wire .

However, with the development of more new technologies in clinical practice and the emergence of some special cases, the above-mentioned conventional guide wire has revealed its many shortcomings:

During the operation, it may be necessary to reverse the direction of the guide wire, that is, it is possible to change the head end of the guide wire to the tail end and the tail end to the head end for use, such as transjugular vein intrahepatic portosystemic vein For shunt surgery, transjugular hepatic vein stent implantation, interventional surgery where femoral artery puncture fails but must be operated from the femoral artery, etc., the above-mentioned conventional guide wires often cannot meet the requirements, because only the head end has the guiding function. The tail end is a relatively hard part, and retreating after entering the lumen will inevitably cause damage or puncture of the lumen, and changing the guide wire at the head end with different shapes cannot achieve the purpose of preventing the damage or puncture of the lumen.

Utility model content

The technical problem to be solved by the utility model is to provide a medical guide wire whose head end and tail end can be pressed into the body.

In order to solve the above technical problems, the utility model is realized through the following technical solutions:

A medical guide wire, comprising a guide wire main body and a bent head end located at the head end of the guide wire main body, the tail end of the guide wire main body is provided with a meandering and bent tail end of the guide wire main body.

On the basis of the above, in order to adapt to the different needs of the introduction parts, the utility model can be improved as follows:

The tail end is a bending strip; or, the tail end is a hook, the hook has a hook and a connecting portion, the connecting portion is vertically connected to the guide wire body, and the hook is vertically connected at the connection part.

Further, the bent strip is a straight strip, and the included angle with the main body of the guide wire is an obtuse angle; or, the bent strip is a circular arc strip, which is tangent to the main body of the guide wire.

Further, an extension section is extended from the end of the bending strip, and the extension section intersects with the bending strip.

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

(1) The guide wire of the present invention has a bent head and a bent tail, so that both the head and the tail can be safely introduced (pressed) into the body, allowing the operator to It is more convenient to use, can save medical expenses, can shorten operation time, and can reduce complications. At the same time, the head and tail ends can be safely introduced (pressed) into the body, and the guide wire can be reversed, so that its function is greatly improved. Increase and shorten the operation time, shorten the exposure time of doctors and patients, reduce the damage of radiation to both doctors and patients, reduce the amount of contrast medium, and reduce the complications related to long operation time and excessive contrast medium consumption.

(2) The guide wire of the utility model can play an unexpected role in some operations. For example, in the transjugular intrahepatic portosystemic shunt, firstly, the percutaneous liver puncture is punctured through the portal vein. Under fluoroscopy, the hepatic vein is pierced through the portal vein through the liver parenchyma, and the guide wire is introduced into the portal vein, liver parenchyma, and hepatic vein from outside the body, reaches the superior vena cava, and is drawn out from the right internal jugular vein. Press into the superior mesenteric vein or splenic vein in the direction of the portal vein. After reaching the target position, introduce the balloon or stent system along the guide wire. As another example, for patients with dissecting aneurysms of the abdominal aorta, if the femoral artery puncture often enters the false lumen by mistake, it can be punctured from the left brachial artery, pressed into the head end of the guide wire, and passed through the subclavian The arteries, aortic arch, descending aorta, abdominal aorta, common iliac artery, and right external iliac artery are led out of the body. At this time, the direction of the guide wire is reversed, that is, the head end of the guide wire becomes the tail end, and the tail end Turning to the head end, and then introducing catheter angiography and stent implantation can often make unsuccessful operations successful, shorten the operation time, and reduce the related risks in the operation.

Description of drawings

FIG. 1 is a schematic structural view of an existing guide wire with a bent head end;

Fig. 2 is a structural schematic diagram of an existing guide wire with a plastic head end;

Fig. 3 is a schematic structural view of Embodiment 1 of the utility model;

Fig. 4 is the structural representation of the second embodiment of the utility model;

Fig. 5 is a structural schematic diagram of a third embodiment of the utility model;

Fig. 6 is a schematic structural view of Embodiment 4 of the utility model;

Fig. 7 is a schematic structural diagram of Embodiment 5 of the present utility model.

In the figure: 1. Guide wire main body, 2. Head end, 3. Tail end, 31. Straight bar, 32. Arc bar, 33. Straight section, 34. Arc section, 35. Hook part, 36. connecting part.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Embodiment one

A medical guide wire as shown in FIG. 3 , including a guide wire main body 1 and a bent head end 2 located at the head end of the guide wire main body 1, and a winding guide wire main body 1 is provided at the tail end of the guide wire main body 1. tail end 3. The material, hardness and coating requirements of the tail end 3 are set according to the technical standards of the existing conventional head end 1 .

In this embodiment, the tail end 3 is a bent strip, and the bent strip is a straight strip 31 , and the included angle with the guide wire main body 1 is an obtuse angle.

In addition, the shape of the tail end portion 3 may be the same as or different from that of the head end portion 2 according to the requirements of the target site. At the same time, the tail end 3 can also be provided with a plastic material to be temporarily bent into a desired shape.

This guide wire can be used in the following situations:

1. Application in transjugular intrahepatic portosystemic shunt.

Transjugular intrahepatic portosystemic shunt usually first punctures the right internal jugular vein, passes through the internal jugular vein to the hepatic vein, then punctures the portal vein through the hepatic vein through the liver parenchyma, and then implants a stent to establish a portal vein in the liver - Channels for systemic venous shunts. However, if the portal vein cannot be punctured through the hepatic vein, the above operation plan cannot be implemented smoothly. At this time, use the guide wire of the present invention to puncture the liver percutaneously, and after piercing the middle portal vein, puncture the hepatic vein through the liver parenchyma under the guidance of ultrasound, and introduce the guide wire into the right jugular vein through the hepatic vein and superior vena cava. Vein, at this time, continue to advance the guide wire, so that the tail end of the guide wire enters the portal vein system, when the tail end 3 enters the portal vein, control the head end drawn from the right internal jugular vein, and the end of the guide wire The head end becomes the tail end of the guide wire, and the original tail end of the guide wire becomes the head end of the guide wire, so that the stent system can be placed from the right internal jugular vein.

2. Application in hepatic vein stent implantation via internal jugular vein.

In clinical practice, for patients with Budd-Chiari syndrome with hepatic vein stenosis or occlusion, hepatic vein stent implantation is usually performed through puncture of the right internal jugular vein, but if it is difficult for the guide wire to enter the hepatic vein from the superior vena cava , surgery will not be possible. At this time, use the guide wire of the present invention to percutaneously puncture the hepatic vein through the liver, enter the superior vena cava along the hepatic vein, lead the guide wire from the right internal jugular vein, reverse the direction of the guide wire, and turn the head end of the guide wire into The tail end of the guide wire can be easily implanted with a stent in the hepatic vein.

3. Application in interventional surgery where femoral artery puncture fails but must be operated from the femoral artery.

Clinically, for patients with abdominal aortic dissecting aneurysms who need intra-abdominal stent implantation, the stents usually need to be placed through the femoral artery approach. Then, the guide wire can be punctured from the left brachial artery, and then led out through the subclavian artery, aortic arch, descending aorta, common iliac artery, and femoral artery. If the direction of the guide wire is reversed, the abdominal aortic stent can be implanted smoothly. into surgery.

Embodiment two

As shown in Figure 4, it is the second embodiment of the guide wire of the present invention. The difference between the second embodiment and the first embodiment is that an extension section is extended from the end of the bending strip at the tail end 3 of the guide wire. The extension section is a straight section 33 which intersects with the straight bar 31 .

Embodiment three

As shown in Figure 5, it is the third embodiment of the guide wire of the present invention. The difference between the third embodiment and the first embodiment is that the bending strip of the tail end 3 of the guide wire is an arc strip 32, and the arc Strip 32 is tangent to guidewire body 1 .

Embodiment four

As shown in Figure 6, it is Embodiment 4 of the guide wire of the present invention. The difference between Embodiment 4 and Embodiment 3 is that an extension section is extended from the end of the bending strip at the tail end 3 of the guide wire. The extension segment is an arc segment 34 , which intersects with the arc bar 32 and extends away from the guide wire main body 1 .

Embodiment five

As shown in Figure 7, it is a fifth embodiment of the guide wire of the present invention. The difference between the fifth embodiment and the first embodiment is that the tail end 3 of the guide wire is a crotch, and the crotch has a hook portion 35 and a hook. The connecting portion 36 is vertically connected to the guide wire body 1 , and the hook portion 35 is vertically connected to the connecting portion 36 .

The implementation of the utility model is not limited thereto. According to the above content of the utility model, the utility model can also make other Various forms of modification, replacement or change all fall within the protection scope of the utility model.

Claims (3)

1. a medical guiding wire, comprises guidewire body and is positioned at the bent cephalic par of guidewire body head end, it is characterized in that: the tail end of described guidewire body is provided with to the tail end of the roundabout bending of guidewire body, described tail end is a bending bar or a crotch; The end of described bending bar extends an extension, and intersect with bending bar this extension; Described crotch has hook part and connecting portion, and described connecting portion is vertically connected at guidewire body, and described hook part is vertically connected at connecting portion.

2. medical guiding wire according to claim 1, is characterized in that: described bending bar is vertical bar, with the angle of guidewire body be obtuse angle.

3. medical guiding wire according to claim 1, is characterized in that: described bending bar is circular arc bar, tangent with guidewire body.