Double-cavity tube of PTA (pure terephthalic acid) balloon dilatation catheter

Abstract

The utility model relates to the technical field of dilation catheters, and discloses a double-cavity tube of a PTA (pure terephthalic acid) balloon dilation catheter, which comprises a handle component, a double-cavity tube fitting is fixedly connected to the side end of the handle component, a guide seat is fixedly connected to the bottom end of the double-cavity tube fitting, an insertion opening is formed in the bottom end of the guide seat, and a through hole is formed in the insertion opening. According to the utility model, through the cooperative arrangement of the guide seat, the protection assembly, the extension plate and other structures, if a medical worker accidentally touches the pull plate in the process of operating the double-cavity pipe fitting, the spring is driven to be stretched, and the spring is immediately shrunk after being stretched, so that the safety of the double-cavity pipe fitting is ensured, and the safety of the double-cavity pipe fitting is ensured. The protection plate is still in a closed state, so that most of the protection plate is not easy to open due to accidental touch of medical staff, and pollutants are not easy to enter a guide wire cavity.

Description

Technical Field

[0001] This utility model relates to the field of dilation catheter technology, specifically to a dual-lumen PTA balloon dilation catheter. Background Technology

[0002] With social development and the continuous improvement of people's living standards, symptoms of vascular stenosis or occlusion caused by various reasons are quite common. Various products to improve vascular stenosis and occlusion have also emerged. Clinicians have achieved good results in treating and improving symptoms of vascular stenosis or occlusion by using balloon dilation catheters. The rapidly exchangeable balloon dilation catheter is one of the most widely used in vascular interventional therapy.

[0003] Existing patent application CN202420320616.6 discloses a dual-lumen tube for a PTA balloon dilation catheter, comprising a tube body with an injection chamber and a guidewire chamber on its inner side. A guidewire exchange port is located in the middle of the inner wall of the guidewire chamber. A protective assembly is provided on the outer side of the guidewire exchange port, including two guide seats. One end of each guide seat is fixedly connected to the outer wall of the tube body. A sealing element is provided on the inner side of each guide seat to completely overlap with the opening of the guidewire exchange port, thus sealing the port. A snap-fit ​​element is provided at one end of the guidewire exchange port, slidingly engaging with the sealing element. This invention, by using a sealing element to seal the guidewire exchange port, prevents contaminants from entering the guidewire chamber from the exchange port during use, solving the problem in the prior art where contaminants easily enter the guidewire chamber and affect normal treatment.

[0004] While the above solution can solve the problem of contaminants easily entering the guidewire lumen and affecting normal treatment in existing technologies, in actual operation, medical staff may accidentally touch the push-pull block during the operation of the double-lumen fitting, which may cause most of the sealing sheet to open. As a result, contaminants can still easily enter the guidewire lumen after the sealing sheet is accidentally opened. Therefore, a double-lumen tube of PTA balloon dilation catheter is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a double-lumen tube for PTA balloon dilation catheter, which solves the problem in the prior art where medical staff can easily accidentally touch the push-pull block during the operation of the double-lumen tube, causing most of the sealing sheet to open, resulting in contaminants still easily entering the guidewire lumen after the sealing sheet is accidentally opened.

[0006] This utility model provides the following technical solution: a double-lumen tube for PTA balloon dilation catheter, including a handle assembly, a double-lumen tube fixedly connected to the side end of the handle assembly, a guide seat fixedly connected to the bottom end of the double-lumen tube, an insertion port at the bottom end of the guide seat, a protective component provided on the inner side end of the guide seat, and an extension plate fixedly connected to the outer side end of the guide seat.

[0007] As a preferred embodiment of the above technical solution, the protective component includes a protective plate, which is inserted from the outer end of the guide seat into the interior of the guide seat. A pull plate is fixedly connected to the bottom end of the protective plate, and a vertical plate is fixedly connected to the top end of the protective plate. A spring is fixedly connected between the side end of the vertical plate and the outer side end of the guide seat.

[0008] As a preferred embodiment of the above technical solution, a rotating rod is rotatably provided on the side end of the upright plate, and a rotating plate is fixedly connected to the side end of the rotating rod.

[0009] As a preferred embodiment of the above technical solution, the side end of the extension plate is provided with a slot, and the top end of the extension plate is provided with a sliding groove.

[0010] As a preferred embodiment of the above technical solution, a slider is fixedly connected to the top of the upright plate, and the slider is slidably connected in the groove.

[0011] As a preferred embodiment of the above technical solution, the shape of the rotating plate is adapted to the shape of the slot.

[0012] As a preferred embodiment of the above technical solution, both the side end of the protective plate and the bottom end of the guide seat are provided with arc-shaped grooves.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a combination of a guide seat, protective components, and an extension plate. Pulling the pull plate moves the protective plate, opening it. Meanwhile, the upright plate moves the rotating plate closer to the slot opening. The upright plate then pulls a spring, causing the rotating plate to pass through the slot. Rotating the rotating plate so that its opening direction is no longer aligned with the slot opening allows it to rest against the side of the extension plate, thus securing the opened protective plate and preventing movement during guidewire insertion. This facilitates the insertion of the guidewire into the double-lumen tubing. The rotating plate... This allows the rotating plate to align with the slot. When the rotating plate no longer presses against the side plate, the spring retracts, pulling the upright plate and protective plate to move. This causes the protective plate to close. Due to the arc-shaped slot, it can accommodate the guide wire and simultaneously close the protective plate, preventing contaminants from entering. Because of the spring, if medical personnel accidentally touch the pull plate during the operation of the double-lumen fitting, it will stretch the spring. The spring will immediately retract after stretching, keeping the protective plate closed. This prevents the protective plate from being opened most of the time due to accidental contact by medical personnel, thus preventing contaminants from entering the guide wire cavity. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a double-lumen PTA balloon dilation catheter;

[0016] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0017] Figure 3 A schematic diagram of a partial structure of the guide seat of a double-lumen PTA balloon dilation catheter;

[0018] Figure 4 for Figure 3 A magnified schematic diagram of part B.

[0019] In the diagram: 1. Handle assembly; 101. Double-lumen fitting; 2. Guide seat; 201. Socket; 3. Protective assembly; 301. Protective plate; 302. Arc groove; 303. Pull plate; 304. Vertical plate; 305. Rotating rod; 306. Rotating plate; 307. Slider; 308. Spring; 4. Extension plate; 401. Groove; 402. Slide. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] like Figures 1-4As shown, this utility model provides a technical solution: a double-lumen tube for PTA balloon dilation catheter, including a handle assembly 1, a double-lumen tube 101 fixedly connected to the side end of the handle assembly 1, a guide seat 2 fixedly connected to the bottom end of the double-lumen tube 101, an insertion port 201 opened at the bottom end of the guide seat 2, a guidewire is inserted into the guide seat 2 through the insertion port 201, and the double-lumen tube 101 is inserted into the guide seat 2 through the guide seat 2, a protective component 3 is provided on the inner side end of the guide seat 2, and an extension plate 4 is fixedly connected to the outer side end of the guide seat 2, a groove 401 is opened on the side end of the extension plate 4, and a sliding groove 402 is opened on the top end of the extension plate 4. The protective component 3 facilitates medical personnel to insert the guidewire into the double-lumen tube 101. At the same time, if medical personnel accidentally touch the protective component 3 during the operation of the double-lumen tube 101, the structural characteristics of the protective component 3 will keep the protective component 3 in a closed state, so that the protective component 3 is not easily opened by medical personnel due to accidental contact, and contaminants are not easily allowed to enter the guidewire lumen.

[0022] As one implementation method in this embodiment, such as Figure 2 , Figure 3 and Figure 4 As shown, the protective assembly 3 includes a protective plate 301, which is inserted from the outer end of the guide seat 2 into the interior of the guide seat 2. Both the side end of the protective plate 301 and the bottom end of the guide seat 2 have arc-shaped grooves 302. A pull plate 303 is fixedly connected to the bottom end of the protective plate 301, and a vertical plate 304 is fixedly connected to the top end of the protective plate 301. A spring 308 is fixedly connected between the side end of the vertical plate 304 and the outer side end of the guide seat 2. A slider 307 is fixedly connected to the top end of the vertical plate 304, and the slider 307 is slidably connected within a groove 402. A rotating rod 305 is rotatably mounted on the side end of the vertical plate 304, and a rotating plate 306 is fixedly connected to the side end of the rotating rod 305. The shape is compatible with the shape of the slot 401. In practice, the protective plate 301 is moved by pulling the pull plate 303. At this time, the protective plate 301 is opened, and the upright plate 304 drives the rotating plate 306 to approach the slot 401. At this time, the upright plate 304 pulls the spring 308 to stretch. When the rotating plate 306 passes through the slot 401, the rotating plate 306 is rotated so that the direction of the rotating plate 306 and the slot 401 is not coincident. At this time, the rotating plate 306 can abut against the side end of the extension plate 4, which is convenient for fixing the opened protective plate 301. This prevents the protective plate 301 from moving when medical staff insert the guide wire, thus making it easier for medical staff to insert the guide wire into the double-lumen tube 101.

[0023] Furthermore, by rotating the rotating plate 306 so that it coincides with the slot 401, the rotating plate 306 no longer presses against the side plate. The spring 308 retracts and pulls the upright plate 304 and the protective plate 301 to move. This causes the protective plate 301 to close. Due to the setting of the arc groove 302, it can adapt to the guide wire and close the protective plate 301 to prevent contaminants from entering. Due to the setting of the spring 308, if medical staff accidentally touch the pull plate 303 during the operation of the double-lumen fitting 101, it will cause the spring 308 to stretch. The spring 308 will immediately retract after stretching, so that the protective plate 301 is still in the closed state. This makes it difficult for the protective plate 301 to be mostly opened due to accidental touch by medical staff, and makes it difficult for contaminants to enter the guide wire cavity.

[0024] Working principle: Pulling the pull plate 303 moves the protective plate 301, opening it. Meanwhile, the upright plate 304 moves the rotating plate 306 closer to the slot 401. The upright plate 304 then pulls the spring 308. Once the rotating plate 306 passes through the slot 401, rotating it so that its opening direction is not aligned with the slot 401. The rotating plate 306 can then rest against the side of the extension plate 4, facilitating the fixation of the opened protective plate 301. This prevents movement of the protective plate 301 when medical personnel insert the guidewire, making it easier for them to insert the guidewire into the double-lumen fitting 101. Rotating the rotating plate 306 further facilitates the insertion of the guidewire into the double-lumen fitting 101. When the slots 401 overlap, the rotating plate 306 no longer presses against the side plate. The spring 308 retracts and pulls the upright plate 304 and the protective plate 301 to move. This causes the protective plate 301 to close. Due to the arc-shaped groove 302, it can adapt to the guide wire and close the protective plate 301 to prevent contaminants from entering. Due to the spring 308, if medical staff accidentally touch the pull plate 303 during the operation of the double-lumen fitting 101, it will cause the spring 308 to stretch. The spring 308 will immediately retract after stretching, so that the protective plate 301 is still in the closed state. This makes it difficult for the protective plate 301 to be opened most of the time due to accidental contact by medical staff, and makes it difficult for contaminants to enter the guide wire cavity.

[0025] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A double-lumen tube for a PTA balloon dilation catheter, comprising a handle assembly (1), wherein a double-lumen fitting (101) is fixedly connected to the side end of the handle assembly (1), characterized in that: The bottom end of the double-lumen fitting (101) is fixedly connected to a guide seat (2), the bottom end of the guide seat (2) is provided with a socket (201), the inner side of the guide seat (2) is provided with a protective component (3), and the outer side of the guide seat (2) is fixedly connected to an extension plate (4).

2. The double-lumen tube of the PTA balloon dilation catheter according to claim 1, characterized in that: The protective component (3) includes a protective plate (301), which is inserted from the outer end of the guide seat (2) into the interior of the guide seat (2). A pull plate (303) is fixedly connected to the bottom end of the protective plate (301), and a vertical plate (304) is fixedly connected to the top end of the protective plate (301). A spring (308) is fixedly connected between the side end of the vertical plate (304) and the outer side end of the guide seat (2).

3. The double-lumen tube of the PTA balloon dilation catheter according to claim 2, characterized in that: The side end of the upright plate (304) is rotatably provided with a rotating rod (305), and the side end of the rotating rod (305) is fixedly connected to a rotating plate (306).

4. The double-lumen tube of the PTA balloon dilation catheter according to claim 3, characterized in that: The side end of the extension plate (4) is provided with a slot (401), and the top end of the extension plate (4) is provided with a sliding groove (402).

5. The double-lumen tube of the PTA balloon dilation catheter according to claim 4, characterized in that: The top of the upright plate (304) is fixedly connected to a slider (307), which is slidably connected in the groove (402).

6. The double-lumen tube of the PTA balloon dilation catheter according to claim 4, characterized in that: The shape of the rotating plate (306) is adapted to the shape of the slot (401).

7. The double-lumen tube of the PTA balloon dilation catheter according to claim 2, characterized in that: The protective plate (301) and the bottom of the guide seat (2) are both provided with arc-shaped grooves (302).

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