In-vitro catheter marking system and in-vitro marking catheter used by same

Abstract

The utility model relates to an in-vitro catheter marking system and an in-vitro marking catheter used by the same. The in-vitro catheter marking system comprises an in-vitro marking catheter, the in-vitro marking catheter comprises a catheter body capable of sliding in a sheath tube, and the far end of the catheter body is provided with a radiopaque mark; the tubular catheter connecting part is arranged at the near end of the catheter body, extends from far to near and is used for going deep into a first catheter seat; the readable marking area is close to the near end of the catheter body, and the readable marking area extends from the near end to the far end along the length of the catheter body; and the position identification component has a fixed axial distance from the near end of the sheathing canal. According to the utility model, the readable marking area is matched with the radiopaque mark at the far end, so that the position information of the far end of the catheter in the body is extracorporeal, and the length information of the lesion can be read more accurately by matching with the position marking part.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and in particular relates to an extracorporeal catheter marking system and an extracorporeal marking catheter used therein. Background Art

[0002] During intravascular stent implantation or interventional therapy, accurate measurement of lesion length is often necessary, crucial for ensuring proper stent positioning and therapeutic efficacy. Currently, existing technologies typically use two-dimensional CT imaging or three-dimensional imaging to measure lesion length. However, due to the tortuosity and complex anatomical structure of blood vessels, traditional imaging techniques are limited by image resolution and imaging angles, making it difficult to accurately depict the actual conditions of complex blood vessels. These factors can lead to inaccurate lesion length measurements, impacting stent selection and implant location.

[0003] Therefore, there is a need in this field to develop a medical device that can more accurately measure the length of the lesion to provide assistance for intravascular stent treatment and improve the accuracy and effectiveness of the treatment. Utility Model Content

[0004] In view of the shortcomings of the prior art, one of the purposes of the present invention is to provide an extracorporeal catheter marking system, comprising:

[0005] An in vitro marking catheter comprises a catheter body capable of sliding in a sheath, a radiopaque marker being provided at the distal end of the catheter body; a tubular catheter connection portion extending from distal to proximal at the proximal end of the catheter body for penetrating into a first catheter seat; and a readable marking area proximal to the proximal end of the catheter body, the readable marking area extending along the length of the catheter body from the proximal end to the distal end.

[0006] and, a position identification component having a fixed axial distance from the proximal end of the sheath.

[0007] This utility model utilizes a readable marking area at the proximal end of the catheter body and a radiopaque marking at the distal end to externalize the positional movement of the catheter body within the body. Lesion length data is obtained by reading the markings in the readable marking area. The position identification component can coordinate with the readable marking area to read the markings to obtain accurate lesion size information. This extracorporeal catheter marking system allows users to more intuitively understand lesion length data, avoiding the errors associated with traditional imaging techniques.

[0008] Preferably, the position identification component has an axial length adjustable structure.

[0009] Preferably, the axial length adjustable structure includes a buckle portion and an axial extension portion connected to the buckle portion.

[0010] The axial extension portion can extend the position marker when the position marker component cannot be located in the readable marking area, thereby quantifying the displacement of the extracorporeal portion of the catheter body. The situation in which the position marker component cannot be located in the readable marking area usually occurs when the lesion location is too far or too short from the puncture location.

[0011] Preferably, the axial length adjustable structure further includes a sliding extension portion connected to the axial extension portion.

[0012] Preferably, the length of the readable marking area accounts for 3% to 30% of the length of the catheter body, for example, 4%, 10%, 13%, 18%, 25%, 28%, etc.

[0013] If the length of the readable marking area is too long, it may damage the hydrophilic coating at the distal end of the catheter body, affect the hydrophilicity of the catheter body, and cause the catheter to generate greater resistance during the delivery process; if the length of the readable marking area is too short, it will affect the adaptability range of the catheter, limit the application of the catheter in lesion areas of different lengths, and make it difficult to provide sufficient marks for accurately measuring the lesion length.

[0014] Preferably, the catheter body and the catheter connecting component are designed as one piece, which can be understood as the catheter body and the catheter connecting component being designed and formed as one piece, that is, the catheter body and the catheter connecting component are the same tube.

[0015] Preferably, the readable mark area has at least 2 spaced marks per unit length in the axial direction, such as 3, 5, 10, 20, 30, 50, etc.

[0016] Preferably, the interval distance of the interval marks is 0.5-3 mm, for example, 0.6 mm, 0.8 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.2 mm, 2.5 mm, 2.8 mm, etc.

[0017] Preferably, the spacing mark includes any one of a laser engraving mark, a printing mark, and a wire-wound mark, or a combination of at least two of them.

[0018] The extracorporeal marking catheter can be used as any one of a microcatheter, a distal access catheter, a support catheter, and a suction catheter.

[0019] The second object of the present invention is to provide an in vitro marking catheter, which is used in the in vitro catheter marking system described in the first object, comprising:

[0020] a catheter body capable of sliding in the sheath and having a radiopaque marker disposed at the distal end;

[0021] A tubular catheter connecting portion is provided at the proximal end of the catheter body and extends from distal to proximal, and is used to penetrate into the first catheter seat;

[0022] and, a readable marking area near the proximal end of the catheter body, wherein the readable marking area extends along the length of the catheter body from the proximal end to the distal end.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This new device uses a readable marking area in conjunction with a radiopaque marker at the distal end to externalize the position of the catheter's distal end. This, combined with a position marker, allows for more accurate reading of lesion length information. This extracorporeal catheter marking system allows users to more intuitively assess lesion length data, avoiding the errors associated with traditional imaging techniques. The catheter itself not only transports medical devices but also allows for measurement of lesion location during delivery, eliminating the need for additional measurement equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of the in vitro catheter marking system provided in Example 1;

[0026] Figure 2 A schematic structural diagram of a position identification component according to one of the specific implementation methods;

[0027] Figure 3 This is a schematic structural diagram of the in vitro catheter marking system provided in Example 2. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further explained below in conjunction with specific implementation methods. However, it should be noted that the specific implementation methods are only a concrete implementation and explanation of the essence of the technical solution of the present invention and should not be understood as a limitation on the scope of protection of the present invention.

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the scope of the utility model. It should also be noted that, for ease of description, only portions relevant to the relevant utility model are shown in the accompanying drawings.

[0030] In the description of the present invention, it should be understood that the terms "distal end" and "proximal end" should be understood as observed from the direction of the surgical operator, the "distal end" is the end away from the surgical operator, and the "proximal end" is the end close to the surgical operator.

[0031] In the description of the present invention, it should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] Example 1

[0033] like Figure 1 ( Figure 1 As shown in the structural schematic diagram of the in vitro catheter marking system provided in Example 1, Example 1 provides an in vitro catheter marking system comprising:

[0034] An in vitro marking catheter includes a catheter body 100 capable of sliding within a sheath 200, with a radiopaque marker 101 disposed at the distal end; a tubular catheter connector 300 disposed at the proximal end of the catheter body 100 and extending from distal to proximal, for penetrating into a first catheter hub 400; and a readable marking region 500 proximal to the proximal end of the catheter body 100, the readable marking region 500 extending along the length of the catheter body 100 from the proximal end to the distal end; the proximal end of the sheath 200 enters a second catheter hub 700;

[0035] And, the position identification component 600 has a fixed axial distance from the proximal end of the sheath tube 200.

[0036] In a specific embodiment, the position identification component 600 has an axial length adjustable structure, such as Figure 2 ( Figure 2 As shown in the structural schematic diagram of the position identification component 600 described in one of the specific embodiments, the axial length adjustable structure includes a snap portion 601, an axial extension portion 602 connected to the snap portion 601, and the axial length adjustable structure also includes a sliding extension portion 603 connected to the axial extension portion 602.

[0037] In a specific embodiment, the length of the readable marking area 500 accounts for 3% to 30% of the length of the catheter body. For example, if the length of the catheter body 100 is 70 cm, the readable marking area 500 can be within a range of 2.1 cm from the proximal end to the distal end of the catheter body, or within a range of 21 cm from the proximal end to the distal end of the catheter body, or a range therebetween. If the length of the catheter body 100 is 180 cm, the readable marking area 500 can be within a range of 5.4 cm from the proximal end to the distal end of the catheter body, or within a range of 54 cm from the proximal end to the distal end of the catheter body, or a range therebetween.

[0038] In a specific embodiment, the catheter body and the catheter connecting component are designed as one piece.

[0039] In a specific embodiment, the readable marking area has at least two spaced markings per unit length in the axial direction.

[0040] In a specific embodiment, the spacing distance of the spacer marks is 0.5 to 3 mm. Preferably, the spacing distance of the spacer marks is 1 mm. The number of spacer marks is obtained by dividing the length of the readable mark area 500 by the spacing distance. For example, if the length of the readable mark area is 10 mm and the spacing distance of the spacer marks is 1 mm, the spacing distance of the spacer marks is 10, and the number of spacer marks is 11.

[0041] In a specific embodiment, the spacer mark includes any one of a laser engraving mark, a printing mark, and a wire-wound mark, or a combination of at least two of them.

[0042] Example 2

[0043] like Figure 3 ( Figure 3 As shown in the structural diagram of the in vitro catheter marking system provided in Example 2, Example 2 provides an in vitro catheter marking system comprising:

[0044] An in vitro marking catheter includes a catheter body 100 capable of sliding within a sheath 200, with a radiopaque marker 101 disposed at the distal end; a tubular catheter connector 300 disposed at the proximal end of the catheter body 100 and extending from distal to proximal, for penetrating into a first catheter hub 400; and a readable marking region 500 proximal to the proximal end of the catheter body 100, the readable marking region 500 extending along the length of the catheter body 100 from the proximal end to the distal end; the proximal end of the sheath 200 enters a second catheter hub 700;

[0045] The proximal end of the second catheter hub 700 also serves as a position identification component 600 to read the position information of the readable marking area 500 .

[0046] The working process of the extracorporeal catheter marking system of the present invention is as follows:

[0047] After the radiopaque marker 101 at the distal end of the extracorporeal marking catheter reaches the proximal side of the lesion, the position information N1 of the readable marking area 500 is read by the position identification component 600, and then the extracorporeal marking catheter is continued to be pushed to the distal side of the lesion, and the position information N2 of the readable marking area 500 is read again by the position identification component 600. The length of the lesion is the difference between N1 and N2.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An extracorporeal catheter marking system, characterized in that: The extracorporeal catheter marking system comprises: An in vitro marking catheter comprises a catheter body slidable within a sheath, a radiopaque marker disposed at a distal end of the catheter body; a tubular catheter connector disposed at a proximal end of the catheter body and extending from distal to proximal, adapted to penetrate into a first catheter hub; and a readable marking region proximal to the proximal end of the catheter body, the readable marking region extending along the length of the catheter body from proximal to distal. and, a position identification component having a fixed axial distance from the proximal end of the sheath.

2. The extracorporeal catheter marking system according to claim 1, wherein: The position identification component has an axial length adjustable structure.

3. The extracorporeal catheter marking system according to claim 2, wherein: The axial length adjustable structure includes a buckle portion and an axial extension portion connected to the buckle portion.

4. The extracorporeal catheter marking system according to claim 3, wherein: The axial length adjustable structure further includes a sliding extension portion connected to the axial extension portion.

5. The extracorporeal catheter marking system according to claim 1, wherein: The length of the readable marking area accounts for 3% to 30% of the length of the catheter body.

6. The extracorporeal catheter marking system according to claim 1, wherein: The catheter body and the catheter connecting component are designed as one piece.

7. The extracorporeal catheter marking system according to claim 1, wherein: The readable mark area has at least two spaced marks per unit length in the axial direction.

8. The extracorporeal catheter marking system according to claim 7, wherein: The interval distance of the interval marks is 0.5~3mm.

9. The extracorporeal catheter marking system according to claim 7, wherein: The spacer mark includes any one of a laser engraving mark, a printing mark, and a wire-wound mark, or a combination of at least two of them.

10. An in vitro marking catheter, characterized in that: The in vitro marking catheter is used in the in vitro catheter marking system according to any one of claims 1 to 9, comprising: a catheter body capable of sliding in the sheath and having a radiopaque marker disposed at the distal end; A tubular catheter connecting portion is provided at the proximal end of the catheter body and extends from distal to proximal, and is used to penetrate into the first catheter seat; and, a readable marking area near the proximal end of the catheter body, wherein the readable marking area extends along the length of the catheter body from the proximal end to the distal end.

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