Working guide wire for intracavitary treatment of iliac artery lesion

Abstract

The utility model provides a working guide wire for intracavitary treatment of iliac artery lesion, which comprises a guide wire main body, scales are embedded on the guide wire main body, the scales comprise main scales and secondary scales, the secondary scales are sequentially arranged at intervals along the length direction of the guide wire main body, and the main scales and the secondary scales are arranged at intervals along the length direction of the guide wire main body. And the secondary scales in a preset length extend outwards to form the primary scales. According to the working guide wire for intracavitary treatment of iliac artery lesion, marks are arranged at the main scale and the two ends of the working guide wire, so that the working guide wire can be developed more clearly under X-rays, the dual functions of measurement and guiding are achieved, and real-time observation of the position of the guide wire body and accurate measurement of lesion length in an operation are supported; the operation of frequently replacing the marking catheter and the working guide wire is omitted in the operation, the situation that the operation time is prolonged due to complex operation is avoided, and meanwhile the risk that the inner wall of a blood vessel is damaged due to repeated exchange of the catheter and the guide wire can be remarkably reduced due to the fact that the single guide wire has measuring and supporting functions.

Description

Technical Field

[0001] This utility model relates to the field of interventional guidewire technology, and in particular to a working guidewire for endovascular treatment of iliac artery lesions. Background Technology

[0002] In endovascular treatment of iliac artery lesions, accurate measurement of lesion length is crucial for the selection of stent or balloon size during the procedure. Existing CTA (computed tomography angiography) and DSA (digital subtraction angiography) measurement tools often cannot provide accurate length information due to the degree of tortuosity of the iliac artery and the complexity of the lesion, leading to uncertainty in intraoperative procedures. In current endovascular surgical procedures, it is usually necessary to use a marker catheter (such as a marker pigtail catheter) for measurement before exchanging the working guidewire.

[0003] The existing measurement methods for guidewire exchange using marked catheters have the following drawbacks in application:

[0004] Frequent catheter and guidewire changes not only increase procedure time but may also lead to unnecessary intravascular damage and increase the risk of postoperative complications.

[0005] Therefore, in order to solve the above problems, this utility model proposes a working guidewire that can reduce the number of intravascular operation steps and can be used for endovascular treatment of iliac artery lesions. Utility Model Content

[0006] To address the problems of cumbersome operation and potential for unnecessary intravascular damage associated with existing marker catheter exchange guidewire measurement methods, this invention provides a novel working guidewire for endovascular treatment of iliac artery lesions.

[0007] According to one objective of this utility model, this utility model provides a working guidewire for endovascular treatment of iliac artery lesions, comprising a guidewire body, wherein the guidewire body is inlaid with a scale, the scale including a main scale and a secondary scale, the secondary scale being arranged sequentially at intervals along the length direction of the guidewire body, the secondary scale extending outward at a predetermined length to form the main scale, the main scale and both ends of the guidewire body being covered with a mark, wherein the guidewire body, the scale and the mark are all visible under X-ray, wherein the visibleity of the mark, the visibleity of the scale and the visibleity of the guidewire body decrease sequentially;

[0008] The guidewire body has a groove corresponding to the scale. The inner wall of the groove is arc-shaped, and the connection between the inner wall of the groove and the outer wall of the guidewire body is a smooth transition. The inner side of the X-ray imaging mark is in close contact with the inner wall of the groove, and the outer side of the X-ray imaging mark is flush with the outer wall of the guidewire body.

[0009] Preferably, the guide wire body is a nickel-titanium alloy guide wire body.

[0010] Preferably, the scale and the guidewire body are made of the same material, and the density of the scale is higher than that of the guidewire body.

[0011] Preferably, the scale is arranged along the circumference of the guidewire body, and a secondary scale is arranged every 1 cm along the length of the guidewire body, and a primary scale is arranged every 5 cm along the secondary scale.

[0012] Preferably, the marking employs a microcoating technique that does not affect the mechanical properties of the guidewire.

[0013] Preferably, the tip of the guidewire body is a flexible, bent tip.

[0014] Preferably, the two sides of the guidewire body in the radial direction are a first side and a second side, and the two sides in the length direction of the guidewire body are a tip side and a tail side, respectively. The tip of the guidewire body includes a first part and a second part connected sequentially along the length direction. The first part is disposed towards the tip side, and the middle part of the first part in the length direction extends in an arc shape towards the first side of the guidewire body. The second part extends towards the tail side, and the middle part of the second part extends in an arc shape towards the second side. The starting end of the first part and the ending end of the second part are flush.

[0015] Preferably, the outer side of the guidewire body and the outer side of the scale are both covered with a low-friction coating.

[0016] Preferably, the low-friction coating is a hydrophilic low-friction coating.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This working guidewire for endovascular treatment of iliac artery lesions features markings on the main scale and both ends of the working guidewire, allowing for clearer imaging under X-rays. It achieves dual functions of measurement and guidance, supporting real-time observation of the guidewire's position and precise measurement of lesion length during the procedure. It eliminates the need for frequent changes of the marking catheter and working guidewire during the procedure, avoiding complex operations that increase surgical time and the risk of vascular injury. At the same time, the single guidewire's measurement and support functions significantly reduce the risk of vascular wall damage caused by multiple exchanges of catheters and guidewires.

[0019] By defining the shape of the groove on the guidewire body for embedding the graduations, the structural strength of the body is ensured to remain high after the graduations are added, thereby improving the stability and safety of the intraoperative procedure.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of the working guidewire for endovascular treatment of iliac artery lesions according to the present invention;

[0022] Figure 2 This is a schematic diagram of the groove and scale connection in a working guidewire for endovascular treatment of iliac artery lesions according to the present invention. Detailed Implementation

[0023] The following description is intended to provide a detailed account of the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0024] Please see Figure 1 and 2 This utility model provides a technical solution: a working guidewire for endovascular treatment of iliac artery lesions, comprising a guidewire body 100, wherein a scale 101 is embedded on the guidewire body 100, the scale 101 including a main scale 1011 and a secondary scale 1012, the secondary scale 1012 being arranged sequentially at intervals along the length direction of the guidewire body 100, the secondary scale 1012 extending along the length or width direction at a predetermined length to form the main scale 1011, the main scale 1011 and both ends of the guidewire body 100 being covered with a mark 102, wherein the guidewire body 100, the scale 101 and the mark 102 are all visible under X-ray, wherein the visible ability of the mark 102, the visible ability of the scale 101 and the visible ability of the guidewire body 100 decrease sequentially;

[0025] The guidewire body 100 has a groove 103 corresponding to the scale 101. The inner wall of the groove 103 is arc-shaped, and the connection between the inner wall of the groove 103 and the outer wall of the guidewire body 100 is a smooth transition. The inner side of the X-ray imaging mark 102 is in close contact with the inner wall of the groove 103, and the outer side of the X-ray imaging mark 102 is flush with the outer wall of the guidewire body 100.

[0026] By setting markers 102 at both ends of the main scale 1011 and the working guidewire, it can be more clearly visualized under X-ray, achieving the dual functions of measurement and guidance. It supports real-time observation of the position of the guidewire body 100 and accurate measurement of lesion length during the operation. It eliminates the need for frequent replacement of the marker 102 catheter and the working guidewire during the operation, avoiding complex operations that increase operation time and risk of vascular injury. At the same time, the single guidewire has both measurement and support functions, which can significantly reduce the risk of vascular wall damage caused by multiple exchanges of catheter and guidewire.

[0027] Taking the application of this working guidewire to endovascular treatment of iliac artery lesions as an example, the anatomical complexity and lesion characteristics of the iliac artery require high surgical precision, and this working guidewire can meet the needs of rapid and precise treatment.

[0028] By defining the shape of the groove 103 on the guidewire body 100 for embedding the scale 101, it is ensured that the body still has high structural strength after the scale 101 is added, thereby improving the stability and safety of intraoperative operations.

[0029] The guidewire body 100 is a high-strength nickel-titanium alloy guidewire body 100. The scale 101 and the guidewire body 100 are made of the same material. The density of the scale 101 is higher than that of the guidewire body 100. When used under X-ray, the scale 101 is more clearly visible than the guidewire body 100.

[0030] The scale 101 is arranged circumferentially along the guidewire body 100. Along the length of the guidewire body 100, a secondary scale 1012 is arranged every 1 cm, and a primary scale 1011 is arranged every 5 cm along the secondary scale 1012. This facilitates intraoperative visual judgment of the lesion length and guidewire body 100 insertion depth based on the scale 101 and markings 102. The guidewire body 100 is made of high-strength alloy material, ensuring excellent hardness and flexibility, enabling it to smoothly pass through the stenotic and tortuous areas of the iliac artery while maintaining stable support.

[0031] The marker 102 uses a micro-coating technology that does not affect the mechanical properties of the guidewire, providing clear imaging, strong adhesion, and preventing it from falling off or interfering with the surgical field of vision.

[0032] Optionally, in the length direction of the guidewire body 100, a sub-scale 1012 is provided every 1cm. The scale 101 is clearly marked 102 on the surface of the guidewire body 100. The scale 101 covers the entire effective working section of the guidewire body 100. In one embodiment, the scale 101 only shows 14-18cm. In another embodiment, the scale 101 can be an integer 20cm.

[0033] In this embodiment, the secondary scale 1012 extends along the length direction of the guide wire body 100 to form the main scale 1011, that is, the secondary scale 1012 extends and thickens along its own width direction to form the main scale 1011.

[0034] The tip of the guidewire body 100 is a flexible, curved tip. During use, the flexible, curved tip effectively reduces damage to the blood vessel wall during surgery while providing a certain degree of support. In this embodiment, the two radially opposite sides of the guidewire body 100 are a first side a and a second side b, respectively. The two longitudinally opposite sides of the guidewire body 100 are a tip side c and a tail side d, respectively. The tip of the guidewire body 100 includes a first part 104 and a second part 105 connected sequentially along its length. The first part 104 is positioned towards the tip side c, and the middle portion of the first part 104 extends in an arc shape towards the first side a of the guidewire body 100. The second part 105 extends towards the tail side d, and the middle portion of the second part 105 extends in an arc shape towards the second side b. The starting end of the first part 104 and the ending end of the second part 105 are flush.

[0035] Furthermore, the outer side of the guidewire body 100 and the outer side of the scale 101 are both covered with a low-friction coating 200, which is a hydrophilic low-friction coating 200. This reduces the friction between the guidewire body 100 and the blood vessel wall during use, further improving the passability and operational stability of the guidewire body 100.

[0036] How to use:

[0037] 1. Under X-ray fluoroscopy, observe the markings 102 and scale 101 on the guidewire body 100. The starting and ending scale values ​​101 of the lesion are clearly recorded through the imaging on the guidewire body 100. The length of the lesion is calculated by the difference between the scale values ​​101 between the two points, without the need for an additional measuring catheter.

[0038] 2. Select a balloon or stent of appropriate size according to the length of the lesion, and insert it into the target lesion area along the working guidewire. Complete balloon dilation or stent deployment with the support of the guidewire.

[0039] In summary, this working guidewire for endovascular treatment of iliac artery lesions has the following advantages:

[0040] 1. Precise imaging measurement: The scale 101 and marking 102 on the guidewire body 100 are clearly visible under X-ray, enabling real-time and precise measurement of the length of iliac artery lesions without the need for additional tools;

[0041] 2. Simple and efficient operation: It integrates measurement and support functions, reducing the steps of changing catheters and guidewires during the operation, significantly shortening the operation time and improving operation efficiency;

[0042] 3. Reduced risk of vascular injury: The integrated design reduces the need for repeated exchanges of guidewires and catheters, protects the inner wall of blood vessels, and ensures surgical safety.

[0043] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A working guidewire for endovascular treatment of iliac artery lesions, characterized in that, The device includes a guidewire body (100), on which scales (101) are embedded. The scales (101) include a main scale (1011) and a secondary scale (1012). The secondary scales (1012) are arranged at intervals along the length of the guidewire body (100). The secondary scales (1012) at a predetermined length extend outward to form the main scale (1011). The main scale (1011) and both ends of the guidewire body (100) are covered with marks (102). The guidewire body (100), the scales (101), and the marks (102) can all be developed under X-rays. The developing ability of the marks (102), the developing ability of the scales (101), and the developing ability of the guidewire body (100) decrease sequentially. The guidewire body (100) has a groove (103) corresponding to the scale (101). The inner wall of the groove (103) is arc-shaped, and the connection between the inner wall of the groove (103) and the outer wall of the guidewire body (100) is a smooth transition. The inner side of the X-ray imaging mark (102) is in close contact with the inner wall of the groove (103), and the outer side of the X-ray imaging mark (102) is flush with the outer wall of the guidewire body (100).

2. The working guidewire for endovascular treatment of iliac artery lesions according to claim 1, characterized in that, The guide wire body (100) is a nickel-titanium alloy guide wire body (100).

3. A working guidewire for endovascular treatment of iliac artery lesions according to claim 1, characterized in that, The scale (101) and the guidewire body (100) are made of the same material, and the density of the scale (101) is higher than that of the guidewire body (100).

4. A working guidewire for endovascular treatment of iliac artery lesions according to claim 1, characterized in that, The scale (101) is arranged along the circumference of the guidewire body (100). In the length direction of the guidewire body (100), a secondary scale (1012) is arranged every 1 cm, and a primary scale (1011) is arranged every 5 cm of the secondary scale (1012).

5. A working guidewire for endovascular treatment of iliac artery lesions according to claim 1, characterized in that, The marking (102) employs a micro-coating technique that does not affect the mechanical properties of the guidewire.

6. A working guidewire for endovascular treatment of iliac artery lesions according to claim 1, characterized in that, The tip of the guidewire body (100) is a flexible, bent tip.

7. A working guidewire for endovascular treatment of iliac artery lesions according to claim 6, characterized in that, The guidewire body (100) has a first side (a) and a second side (b) on its radial sides, and a tip side (c) and a tail side (d) on its length sides. The tip of the guidewire body (100) includes a first part (104) and a second part (105) connected sequentially along its length. The first part (104) is disposed toward the tip side (c). The middle part of the first part (104) extends in an arc shape toward the first side (a) of the guidewire body (100) in the length direction. The second part (105) extends toward the tail side (d). The middle part of the second part (105) extends in an arc shape toward the second side (b). The starting end of the first part (104) and the ending end of the second part (105) are flush.

8. A working guidewire for endovascular treatment of iliac artery lesions according to claim 1, characterized in that, The outer side of the guidewire body (100) and the outer side of the scale (101) are both covered with a low-friction coating (200).

9. A working guidewire for endovascular treatment of iliac artery lesions according to claim 8, characterized in that, The low-friction coating (200) is a hydrophilic low-friction coating (200).

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