Catheter delivery sheath

Abstract

This utility model discloses a catheter delivery sheath, including a main sheath, a first delivery end fixedly connected to the bottom of the main sheath, a movable delivery mechanism at the top of the main sheath, a secondary delivery mechanism at one end of the main sheath, and an expansion mechanism inside the main sheath. This utility model utilizes the movable delivery mechanism within the main sheath for primary delivery, the expansion mechanism to allow multiple guidewires and dilation devices to be simultaneously inserted into a single sheath, and the secondary delivery mechanism for auxiliary delivery tasks. This avoids the limitations of traditional sheaths with only a single input end, allowing two input systems to enter different blood vessels for different operations, thus improving practicality.

Description

Technical Field

[0001] This utility model relates to the field of sheath technology, and in particular to catheter delivery sheaths. Background Technology

[0002] Currently, interventional diagnostic and treatment sheaths have been widely used in human interventional diagnostic and treatment procedures. They are usually used to establish a channel between the lesion site inside the patient's body and the external operating end, so as to introduce various diagnostic and treatment instruments, drugs or implantable devices to the lesion site, or to drain body fluids from the lesion site, so as to reach the lesion site without surgery.

[0003] For example, the utility model patent with authorization announcement number CN 221129992 U discloses a sheath structure and delivery system, which includes a shell, a telescopic component and a multi-channel component. The telescopic component includes a guide sleeve, a push switch and a pushable sleeve. The guide sleeve is disposed in the shell, and the push switch is slidably connected to the guide sleeve. One end of the pushable sleeve is connected to the push switch, and the other end extends outside the shell. The multi-channel component includes a multi-channel inlet tube and an auxiliary channel tube. The multi-channel inlet tube is connected to the shell, and the output end of the multi-channel inlet tube is connected to one or more auxiliary channel tubes. The auxiliary channel tubes are parallel to the pushable sleeve and extend to their free end. However, there is only one delivery end in use, which cannot allow multiple guide wires and catheters to enter one sheath at the same time, thus limiting the scope of use. In view of this, a catheter delivery sheath was proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a catheter delivery sheath.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The catheter delivery sheath includes a main sheath, a first delivery end fixedly connected to the bottom of the main sheath, a movable delivery mechanism provided at the top of the main sheath, a secondary delivery mechanism provided at one end of the main sheath, and an expansion mechanism provided inside the main sheath.

[0007] Preferably, the movable delivery mechanism includes a secondary sheath and a first conductive hose, with both ends of the first conductive hose connected to the main sheath and the secondary sheath, respectively.

[0008] Preferably, a second connecting plate is fixedly connected to the outer wall of the main sheath, a first connecting plate is fixedly connected to the outer wall of the secondary sheath, and a plurality of first springs are fixedly connected between the first connecting plate and the second connecting plate.

[0009] Preferably, the first connecting plate and the second connecting plate are threadedly connected to a threaded screw, and one end of the threaded screw is fixedly connected to a limit block.

[0010] Preferably, the secondary conveying mechanism includes a secondary connecting pipe and a main connecting pipe, one end of the main connecting pipe is fixedly connected to the main sheath, a connecting mechanism is provided between the secondary connecting pipe and the main connecting pipe, and a second conveying end is fixedly connected to the secondary connecting pipe.

[0011] Preferably, the connecting mechanism includes a third connecting plate and a fourth connecting plate. The third connecting plate is fixedly connected to the main connecting pipe, the fourth connecting plate is fixedly connected to the secondary connecting pipe, a plurality of second springs are fixedly connected between the third connecting plate and the fourth connecting plate, a second flexible conduit is fixedly connected between the secondary connecting pipe and the main connecting pipe, and a screw is threadedly connected to the outer wall of the fourth connecting plate.

[0012] Preferably, the expansion mechanism includes multiple guide wires and an expansion device, with the multiple guide wires located inside the main sheath and the top of the multiple guide wires fixedly connected to the expansion device.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. By setting up a main sheath, the active delivery mechanism is used for the main delivery task. By setting up an expansion mechanism, multiple guidewires and expansion devices can be simultaneously inserted into a single sheath. By setting up a secondary delivery mechanism, auxiliary delivery tasks can be performed. This avoids the problem of traditional sheaths having only a single input end. At the same time, the two input systems enter different blood vessels and can be used for different operations, thus improving practicality.

[0015] 2. By connecting and fixing the main sheath and the secondary sheath with a first conductive hose, the secondary sheath is made movable. It is limited by the first connecting plate, the second connecting plate, and the first spring between them. The tilt of the secondary sheath is adjusted by the threaded screw connected between the first connecting plate and the second connecting plate, thereby improving the adjustability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the catheter delivery sheath proposed in this utility model;

[0017] Figure 2 This is a side view of the main structure of the catheter delivery sheath proposed in this utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This is a cross-sectional structural diagram of the catheter delivery sheath proposed in this utility model.

[0020] In the diagram: 1 Main sheath, 2 First connecting hose, 3 Limiting block, 4 Secondary sheath, 5 Expansion device, 6 Multiple guide wires, 7 First connecting plate, 8 First spring, 9 Secondary connecting plate, 10 Threaded screw, 11 Secondary connecting pipe, 12 Main connecting pipe, 13 First conveying end, 14 Secondary conveying end, 15 Third connecting plate, 16 Secondary connecting hose, 17 Secondary spring, 18 Fourth connecting plate, 19 Screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4 The catheter delivery sheath includes a main sheath 1, with a first delivery end 13 fixedly connected to the bottom of the main sheath 1. A movable delivery mechanism is provided at the top of the main sheath 1, and a secondary delivery mechanism is provided at one end of the main sheath 1. An expansion mechanism is provided inside the main sheath 1. The main delivery task is carried out by the movable delivery mechanism through the main sheath 1. The expansion mechanism allows multiple guidewires 6 and expansion devices 5 to be inserted into one sheath simultaneously. The secondary delivery mechanism allows for auxiliary delivery tasks. This avoids the problem of traditional sheaths having only a single input end. At the same time, two input systems are inserted into different blood vessels, allowing for different operations and improving practicality.

[0023] In this utility model, the movable conveying mechanism includes a secondary sheath 4 and a first conductive hose 2. The two ends of the first conductive hose 2 are connected to the main sheath 1 and the secondary sheath 4, respectively. A second connecting plate 9 is fixedly connected to the outer wall of the main sheath 1, and a first connecting plate 7 is fixedly connected to the outer wall of the secondary sheath 4. A plurality of first springs 8 are fixedly connected between the first connecting plate 7 and the second connecting plate 9. A threaded screw 10 is threadedly connected to the first connecting plate 7 and the second connecting plate 9. A limit block 3 is fixedly connected to one end of the threaded screw 10. By setting the main sheath 1 and the secondary sheath 4 to be connected and fixed by the first conductive hose 2, the secondary sheath 4 is made movable. The first connecting plate 7 and the second connecting plate 9 and the first springs 8 between them are used for limiting. The tilt adjustment of the secondary sheath 4 is adjusted by setting the threaded screw 10 threadedly connected between the first connecting plate 7 and the second connecting plate 9, thereby improving the adjustability.

[0024] The secondary delivery mechanism includes a secondary connecting tube 11 and a main connecting tube 12. One end of the main connecting tube 12 is fixedly connected to the main sheath 1. A connecting mechanism is provided between the secondary connecting tube 11 and the main connecting tube 12. A second delivery end 14 is fixedly connected to the secondary connecting tube 11. The connecting mechanism includes a third connecting plate 15 and a fourth connecting plate 18. The third connecting plate 15 is fixedly connected to the main connecting tube 12, and the fourth connecting plate 18 is fixedly connected to the secondary connecting tube 11. Multiple second springs 17 are fixedly connected between the third connecting plate 15 and the fourth connecting plate 18. A second conductive hose 16 is fixedly connected between the secondary connecting tube 11 and the main connecting tube 12. A screw 19 is threaded onto the outer wall of the fourth connecting plate 18. By setting up the secondary delivery mechanism, auxiliary delivery tasks can be performed, avoiding the traditional sheath having only a single input end. At the same time, the two input systems enter different blood vessels and can perform different operations, improving practicality.

[0025] The expansion mechanism includes a multi-guide wire 6 and an expansion device 5. The multi-guide wire 6 is located inside the main sheath 1, and the top of the multi-guide wire 6 is fixedly connected to the expansion device 5. The expansion mechanism can simultaneously insert the multi-guide wire 6 and the expansion device 5 into a sheath.

[0026] Working Principle: In the idle area of ​​this device, all the components mentioned above, and their corresponding structural parts, are connected. The specific connection method should refer to the working principle below, and the connection between each component is completed in the order of operation. The detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and will not explain it further. When using this device, the main sheath 1 is set up to carry out the main delivery task using the movable delivery mechanism. The expansion mechanism can be set up to allow multiple guidewires 6 and expansion device 5 to enter one sheath at the same time. The secondary delivery mechanism can be set up to carry out auxiliary delivery tasks. This avoids the traditional sheath having only a single input end. At the same time, the two input systems enter different blood vessels and can perform different operations, improving practicality.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. Catheter delivery sheath tube comprising a main sheath tube (1), characterized in that, The bottom of the main sheath (1) is fixedly connected to a first conveying end (13), the top of the main sheath (1) is provided with a movable conveying mechanism, one end of the main sheath (1) is provided with a secondary conveying mechanism, and the inside of the main sheath (1) is provided with an expansion mechanism.

2. The catheter delivery sheath tube of claim 1, wherein, The active delivery mechanism includes a secondary sheath (4) and a first conductive hose (2), with both ends of the first conductive hose (2) connected to the main sheath (1) and the secondary sheath (4), respectively.

3. The catheter delivery sheath tube of claim 2, wherein, The outer wall of the main sheath (1) is fixedly connected to a second connecting plate (9), the outer wall of the secondary sheath (4) is fixedly connected to a first connecting plate (7), and a plurality of first springs (8) are fixedly connected between the first connecting plate (7) and the second connecting plate (9).

4. The catheter delivery sheath tube of claim 3, wherein, The first connecting plate (7) and the second connecting plate (9) are threadedly connected to a threaded screw (10), and a limit block (3) is fixedly connected to one end of the threaded screw (10).

5. The catheter delivery sheath tube of claim 1, wherein, The secondary conveying mechanism includes a secondary connecting pipe (11) and a main connecting pipe (12). One end of the main connecting pipe (12) is fixedly connected to the main sheath (1). A connecting mechanism is provided between the secondary connecting pipe (11) and the main connecting pipe (12). The secondary connecting pipe (11) is fixedly connected to a second conveying end (14).

6. The catheter delivery sheath tube of claim 5, wherein, The connecting mechanism includes a third connecting plate (15) and a fourth connecting plate (18). The third connecting plate (15) is fixedly connected to the main connecting pipe (12), and the fourth connecting plate (18) is fixedly connected to the secondary connecting pipe (11). A plurality of second springs (17) are fixedly connected between the third connecting plate (15) and the fourth connecting plate (18). A second conductive hose (16) is fixedly connected between the secondary connecting pipe (11) and the main connecting pipe (12). A screw (19) is threadedly connected to the outer wall of the fourth connecting plate (18).

7. The catheter delivery sheath tube of claim 1, wherein, The expansion mechanism includes a multi-guide wire (6) and an expansion device (5). The multi-guide wire (6) is located inside the main sheath (1), and the top of the multi-guide wire (6) is fixedly connected to the expansion device (5).

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