Microcatheter head end coating dipping jig

Abstract

The utility model discloses a micro-catheter head end coating dipping jig, which belongs to the technical field of dipping jigs and comprises a dipping jig main body and a material containing frame, the mounting plate is arranged at the upper end of the material containing frame, the material containing frame is located in the dipping jig body, and a plurality of positioning rods and a plurality of fixing rods are arranged in the material containing frame; the two rectangular grooves are formed in the two sides of the material containing frame in a penetrating mode correspondingly, and matched rectangular plates are arranged in the two rectangular grooves in a penetrating mode; according to the utility model, through the plurality of positioning rods which are arranged in the material containing frame and can move up and down and the guide wheels arranged at the upper ends of the plurality of positioning rods and the plurality of fixing rods, the position of the head end of the micro-catheter can be flexibly adjusted in the dipping process, so that the head end of the micro-catheter is fully and uniformly contacted with a coating solution; the problems of insufficient contact, uneven coating and the like caused by fixed position are avoided, the dipping effect of the head end of the micro-catheter is effectively guaranteed, the dipping process is optimized, and the practicability of the micro-catheter head end coating dipping jig is remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of impregnation fixture technology, specifically relating to a microcatheter tip coating impregnation fixture. Background Technology

[0002] Microcatheter tip coating impregnation is a technique that applies a specific coating material to the surface of a microcatheter tip through an impregnation process. The principle of microcatheter tip coating impregnation fixtures is to utilize the viscosity and surface tension of a polymer solution to allow the solution to adhere to the tip surface after immersion. Subsequent steps such as lifting and drying then form a uniform coating. This coating significantly improves the performance of the microcatheter, such as reducing friction with human tissue, decreasing vascular wall contact resistance, improving ease of operation and patient comfort, while avoiding potential complications such as friction damage and infection. Microcatheter tip coating impregnation technology is widely used in neurovascular and peripheral vascular interventional diagnosis and treatment, such as coronary artery stenting, aneurysm embolization, and interventional chemoembolization for tumors. Microcatheters prepared using this technique can precisely guide and prevent embolic agent reflux, improving surgical success rates and reducing the risk of patients undergoing complex interventional treatments, making it an important tool for minimally invasive interventional therapy.

[0003] In existing microcatheter tip coating impregnation fixtures, the microcatheter tip is usually placed inside the fixture to promote coating adhesion to its surface. However, during the impregnation process, the microcatheter tip is often fixed in a single position. This fixed state limits its sufficient contact with the coating solution. Due to insufficient contact, the coating adhesion on the surface of the microcatheter tip is difficult to achieve a uniform state, which in turn has an adverse effect on the impregnation effect. This non-uniformity not only reduces the stability of the coating quality, but also weakens the practical effectiveness of microcatheter tip coating impregnation fixtures in clinical applications or industrial production to a certain extent. Utility Model Content

[0004] This invention proposes a microcatheter tip coating impregnation fixture to address the problem of insufficient uniformity in microcatheter tip impregnation in existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a microcatheter tip coating impregnation fixture, comprising:

[0006] The main body of the impregnation fixture and the material holding frame;

[0007] An installation plate is set on the upper end of the material holding frame, which is located inside the body of the immersion fixture. The material holding frame is provided with multiple positioning rods and multiple fixing rods.

[0008] Two rectangular slots are respectively installed through both sides of the material holding frame. A matching rectangular plate is installed through the two rectangular slots. The two ends of the multiple positioning rods extend into the rectangular slots on both sides and are respectively installed on one side of the two rectangular plates.

[0009] A drive shaft is located at the upper end of the material holding frame. An installation groove is provided in the mounting plate, and the drive shaft passes through the installation groove. A discharge pipe is provided on one side of the bottom end of the impregnation fixture body. A positioning shaft is rotatably connected to the bottom end of the impregnation fixture body, and multiple stirring blades are provided on the outside of the positioning shaft.

[0010] In a preferred embodiment, the upper end of the impregnation fixture body is provided with a mounting frame, the upper end of the mounting frame is provided with an electric push rod, and the output end of the electric push rod is located on the upper end of the mounting plate.

[0011] In a preferred embodiment, the material holding frame is provided with limiting plates on both sides, and the inner wall of the impregnation fixture body is provided with limiting grooves on both sides that are adapted to the limiting plates. The two limiting plates are respectively located in the two limiting grooves and are slidably connected to the side walls of the limiting grooves.

[0012] To ensure sufficient and uniform contact between the microcatheter tip and the coating solution, the multiple positioning rods and multiple fixing rods are arranged in a "V" shape, with the multiple positioning rods and multiple fixing rods arranged in opposite directions. The multiple positioning rods and multiple fixing rods are provided with multiple sieving holes, and the upper ends of the multiple positioning rods and multiple fixing rods are provided with guide grooves. Guide wheels are rotatably connected in the multiple guide grooves, and the upper ends of the multiple guide wheels are provided through the guide grooves and extend to the outside.

[0013] In a preferred embodiment, each end of the drive shaft is provided with a drive plate, each drive plate is provided with a guide shaft on one side, and each of the two rectangular plates is provided with a guide opening adapted to the guide shaft at its upper end. The two guide shafts pass through the two guide openings respectively and are slidably connected to the side wall of the guide opening.

[0014] In a preferred embodiment, a drive groove is provided in the mounting plate located at the upper end of the mounting groove, a drive motor is provided in the drive groove, the output end of the drive motor extends into the mounting groove and is provided with a first bevel gear, and a second bevel gear that meshes with the first bevel gear is provided on the outside of the drive shaft located in the mounting groove.

[0015] In order to ensure that the coating solution in the immersion fixture is evenly distributed, positioning wheels are provided on both sides of the positioning shaft, and U-shaped abutment frames are provided on both sides of the bottom end of the immersion fixture body. The upper ends of the two abutment frames abut against the bottom ends of the two rectangular plates respectively. A rack plate adapted to the positioning wheels is provided on one side of the inner wall of the two abutment frames, and the two rack plates are respectively engaged with the two positioning wheels.

[0016] In a preferred embodiment, both of the two contact frames are provided with multiple snap-fit ​​grooves at their bottom ends, each of the multiple snap-fit ​​grooves is provided with a limiting spring, each of the multiple limiting springs is provided with a snap-fit ​​rod at its bottom end that is adapted to the snap-fit ​​groove, and the bottom ends of the multiple snap-fit ​​rods are all located at the bottom end of the immersion fixture body.

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

[0018] This invention, through multiple vertically movable positioning rods set in the material holding frame, and guide wheels at the upper ends of the multiple positioning rods and multiple fixed rods, allows for flexible adjustment of the position of the microcatheter tip during the impregnation process. This ensures that the microcatheter tip makes full and uniform contact with the coating solution, avoiding problems such as insufficient contact and uneven coating caused by fixed position. It effectively guarantees the impregnation effect of the microcatheter tip, optimizes the impregnation process, and significantly improves the practicality of the microcatheter tip coating impregnation fixture.

[0019] This invention, through the rack plates set within the two contact frames and the positioning wheels on both sides of the positioning shaft, allows the positioning shaft and its multiple agitator blades to rotate simultaneously when the two rectangular plates push the two contact frames up and down. The agitator blades continuously stir the coating solution, creating effective fluid movement and ensuring the coating solution is fully distributed within the impregnation fixture. This avoids uneven concentration caused by solution deposition and ensures the consistency of the coating solution properties throughout the fixture. This not only optimizes the distribution of the coating solution but also provides strong support for the stability and quality of the microcatheter tip coating impregnation process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main appearance of the structure of this utility model;

[0021] Figure 2 This is a schematic front cross-sectional view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the external appearance of the material holding frame of this utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of the contact frame of the present invention.

[0024] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Impregnation fixture body; 2. Material holding frame; 3. Mounting plate; 4. Positioning rod; 5. Fixing rod; 6. Rectangular plate; 7. Drive shaft; 8. Discharge pipe; 9. Positioning shaft; 10. Stirring blade; 11. Mounting frame; 12. Electric push rod; 13. Limiting plate; 14. Screening hole; 15. Guide wheel; 16. Drive plate; 17. Guide shaft; 18. Drive motor; 19. First bevel gear; 20. Second bevel gear; 21. Positioning wheel; 22. Contact frame; 23. Rack plate; 24. Limiting spring; 25. Clamping rod. Detailed Implementation

[0026] 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. Example

[0027] Please see Figure 1-5 This utility model provides a microcatheter tip coating impregnation fixture, comprising:

[0028] Impregnation fixture body 1 and material holding frame 2;

[0029] Mounting plate 3 is set on the upper end of material holding frame 2. Material holding frame 2 is located inside the impregnation fixture body 1. Multiple positioning rods 4 and multiple fixing rods 5 are provided inside material holding frame 2.

[0030] Two rectangular slots are respectively installed through both sides of the material holding frame 2. A matching rectangular plate 6 is installed through the two rectangular slots. Multiple positioning rods 4 extend to the rectangular slots on both sides and are respectively installed on one side of the two rectangular plates 6.

[0031] The drive shaft 7 is located at the upper end of the material holding frame 2. The mounting plate 3 has an installation groove, and the drive shaft 7 passes through the installation groove. The bottom side of the impregnation fixture body 1 is provided with a discharge pipe 8. The bottom of the impregnation fixture body 1 is rotatably connected to a positioning shaft 9. Multiple stirring blades 10 are provided on the outside of the positioning shaft 9.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, the upper end of the impregnation fixture body 1 is provided with a mounting frame 11, and the upper end of the mounting frame 11 is provided with an electric push rod 12. The electric push rod 12 is existing technology and will not be described in detail here. The output end of the electric push rod 12 is located on the upper end of the mounting plate 3. The output end of the electric push rod 12 will drive the mounting plate 3 and the material holding frame 2 to move up and down, so as to conveniently impregnate or remove the microcatheter head.

[0033] Specifically, such as Figure 2 and Figure 3As shown, the material holding frame 2 is provided with limiting plates 13 on both sides. The inner wall of the immersion fixture body 1 is provided with limiting grooves that are adapted to the limiting plates 13 on both sides. The two limiting plates 13 are located in the two limiting grooves respectively and are slidably connected to the side wall of the limiting groove. The two limiting plates 13, together with the two limiting grooves, can limit the vertical movement of the material holding frame 2 and prevent its position from shifting.

[0034] Specifically, such as Figure 2 and Figure 3 As shown, multiple positioning rods 4 and multiple fixing rods 5 are arranged in a "V" shape, and the multiple positioning rods 4 and multiple fixing rods 5 are arranged in opposite directions. Multiple screening holes 14 are provided through multiple positioning rods 4 and multiple fixing rods 5. Guide grooves are opened at the upper ends of multiple positioning rods 4 and multiple fixing rods 5. Guide wheels 15 are rotatably connected in multiple guide grooves. The upper ends of multiple guide wheels 15 are all through the guide grooves and extend to the outside.

[0035] Through its design, multiple vertically movable positioning rods 4 can intermittently move above and below multiple fixed rods 5, allowing the microcatheter tip to frequently change contact surfaces. The multiple positioning rods 4 and fixed rods 5 arranged in a "V" shape and facing opposite directions allow the microcatheter tip to move left and right, thus ensuring sufficient and uniform contact with the coating solution. Multiple guide wheels 15 allow the microcatheter tip to move more smoothly.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, drive plates 16 are provided at both ends of drive shaft 7, and guide shafts 17 are provided on one side of each drive plate 16. Guide openings adapted to guide shafts 17 are provided through the upper ends of the two rectangular plates 6. The two guide shafts 17 pass through the two guide openings respectively and are slidably connected to the side walls of the guide openings. When drive shaft 7 drives the two drive plates 16 to rotate, it can drive the two guide shafts 17 to rotate respectively. In conjunction with the guide openings at the upper ends of the two rectangular plates 6, the two rectangular plates 6 can be moved up and down intermittently, thereby driving multiple positioning rods 4 to move up and down to adjust the position of the microcatheter tip.

[0037] Specifically, such as Figure 2 and Figure 5 As shown, a drive groove is provided in the mounting plate 3 located at the upper end of the mounting groove. A drive motor 18 is provided in the drive groove. The drive motor 18 is existing technology and will not be described in detail here. The output end of the drive motor 18 extends into the mounting groove and is provided with a first bevel gear 19. A second bevel gear 20 that meshes with the first bevel gear 19 is provided on the outside of the drive shaft 7 located in the mounting groove. When the drive motor 18 is started, its output end will drive the first bevel gear 19 to rotate, thereby driving the second bevel gear 20 and the drive shaft 7 to rotate. Example

[0038] Please see Figure 1-5 This utility model provides a microcatheter tip coating impregnation fixture, comprising:

[0039] Impregnation fixture body 1 and material holding frame 2;

[0040] Mounting plate 3 is set on the upper end of material holding frame 2. Material holding frame 2 is located inside the impregnation fixture body 1. Multiple positioning rods 4 and multiple fixing rods 5 are provided inside material holding frame 2.

[0041] Two rectangular slots are respectively installed through both sides of the material holding frame 2. A matching rectangular plate 6 is installed through the two rectangular slots. Multiple positioning rods 4 extend to the rectangular slots on both sides and are respectively installed on one side of the two rectangular plates 6.

[0042] The drive shaft 7 is located at the upper end of the material holding frame 2. The mounting plate 3 has an installation groove, and the drive shaft 7 passes through the installation groove. The bottom side of the impregnation fixture body 1 is provided with a discharge pipe 8. The bottom of the impregnation fixture body 1 is rotatably connected to a positioning shaft 9. Multiple stirring blades 10 are provided on the outside of the positioning shaft 9.

[0043] Specifically, such as Figure 2 and Figure 4 As shown, positioning wheels 21 are provided on both sides of the positioning shaft 9, and U-shaped contact frames 22 are provided on both sides of the bottom end of the immersion fixture body 1. The upper ends of the two contact frames 22 abut against the bottom ends of the two rectangular plates 6 respectively. A rack plate 23 adapted to the positioning wheel 21 is provided on one side of the inner wall of the two contact frames 22. The two rack plates 23 are respectively engaged and connected with the two positioning wheels 21.

[0044] Through its design, when the two rectangular plates 6 move up and down, they will push the two abutment frames 22 and the two rack plates 23 to move. The two rack plates 23 will drive the two positioning wheels 21 to rotate, which will drive the positioning shaft 9 and multiple stirring blades 10 to rotate, so that the coating solution in the impregnation fixture body 1 can be distributed more evenly, ensuring the quality of impregnation of the microcatheter tip.

[0045] Specifically, such as Figure 4 As shown, each of the two contact frames 22 has multiple locking slots at its bottom end. Each locking slot has a limiting spring 24. Each limiting spring 24 has a locking rod 25 at its bottom end that matches the locking slot. The locking rods 25 are all located at the bottom end of the immersion fixture body 1. The locking rods 25, in conjunction with the locking slots, can limit the vertical movement of the two contact frames 22 and prevent them from shifting. When the rectangular plate 6 moves upward, the limiting springs 24 can drive the contact frames 22 to move downward, thus realizing the reciprocating vertical movement of the two contact frames 22.

[0046] See Figure 1-5When using a microcatheter tip coating impregnation fixture to impregnate the microcatheter tip, the microcatheter tip must first be placed on multiple positioning rods 4 and multiple fixing rods 5 within the material holding frame 2. Then, the electric push rod 12 is activated, allowing the material holding frame 2 to move into the impregnation fixture body 1. During the impregnation process, the drive motor 18 is activated. The output of the drive motor 18 drives the first bevel gear 19 to rotate, which in turn drives the second bevel gear 20 and the drive shaft 7 to rotate. The drive shaft 7 then drives the drive plates 16 and guide shaft 17 on both sides to rotate. This, combined with the guide openings at the upper ends of the two rectangular plates 6, allows the two rectangular plates 6 to rotate... The two rectangular plates 6 can move up and down repeatedly, and simultaneously drive multiple positioning rods 4 to move up and down, thereby effectively adjusting the position of the microcatheter tip so that it can fully and evenly contact the coating solution. When the two rectangular plates 6 move up and down, they will push the two abutment frames 22 to move, and the two abutment frames 22 will drive the two rack plates 23 to move, which will drive the two positioning wheels 21 to rotate. The two positioning wheels 21 will drive the positioning shaft 9 to rotate, and the positioning shaft 9 will drive multiple stirring blades 10 to rotate, so that the coating solution can be distributed more evenly, ensuring the quality of its impregnation of the microcatheter tip.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microcatheter tip coating impregnation fixture, characterized in that, include: The main body of the impregnation fixture (1) and the material holding frame (2); Mounting plate (3) is set on the upper end of the material holding frame (2). The material holding frame (2) is located inside the impregnation fixture body (1). The material holding frame (2) is provided with multiple positioning rods (4) and multiple fixing rods (5). Two rectangular slots are respectively installed through the two sides of the material holding frame (2). A matching rectangular plate (6) is installed through the two rectangular slots. The two ends of the multiple positioning rods (4) extend into the rectangular slots on both sides and are respectively installed on one side of the two rectangular plates (6). A drive shaft (7) is set at the upper end of the material holding frame (2). An installation groove is opened in the mounting plate (3). The drive shaft (7) passes through the installation groove. A discharge pipe (8) is provided on one side of the bottom end of the impregnation fixture body (1). A positioning shaft (9) is rotatably connected to the bottom end of the impregnation fixture body (1). Multiple stirring blades (10) are provided on the outside of the positioning shaft (9).

2. The microcatheter tip coating impregnation fixture according to claim 1, characterized in that: The upper end of the impregnation fixture body (1) is provided with a mounting frame (11), and the upper end of the mounting frame (11) is provided with an electric push rod (12). The output end of the electric push rod (12) is located on the upper end of the mounting plate (3).

3. The microcatheter tip coating impregnation fixture according to claim 1, characterized in that: The material holding frame (2) is provided with limiting plates (13) on both sides. The inner wall of the impregnation fixture body (1) is provided with limiting grooves that are compatible with the limiting plates (13) on both sides. The two limiting plates (13) are located in the two limiting grooves respectively and are slidably connected to the side wall of the limiting groove.

4. The microcatheter tip coating impregnation fixture according to claim 1, characterized in that: The multiple positioning rods (4) and multiple fixing rods (5) are arranged in a "V" shape. The multiple positioning rods (4) and multiple fixing rods (5) are arranged in opposite directions. The multiple positioning rods (4) and multiple fixing rods (5) are provided with multiple screening holes (14). The upper ends of the multiple positioning rods (4) and multiple fixing rods (5) are provided with guide grooves. The guide wheels (15) are rotatably connected in the multiple guide grooves. The upper ends of the multiple guide wheels (15) are provided through the guide grooves and extend to the outside.

5. The microcatheter tip coating impregnation fixture according to claim 1, characterized in that: Both ends of the drive shaft (7) are provided with drive plates (16), and both drive plates (16) are provided with guide shafts (17) on one side. Both rectangular plates (6) have guide openings that are adapted to the guide shafts (17) through their upper ends. The two guide shafts (17) pass through the two guide openings respectively and are slidably connected to the side walls of the guide openings.

6. The microcatheter tip coating impregnation fixture according to claim 1, characterized in that: A drive slot is provided in the mounting plate (3) located at the upper end of the mounting slot. A drive motor (18) is provided in the drive slot. The output end of the drive motor (18) extends into the mounting slot and is provided with a first bevel gear (19). A second bevel gear (20) that meshes with the first bevel gear (19) is provided on the outside of the drive shaft (7) located in the mounting slot.

7. The microcatheter tip coating impregnation fixture according to claim 1, characterized in that: Positioning wheels (21) are provided on both sides of the positioning shaft (9). U-shaped contact frames (22) are provided on both sides of the bottom end of the immersion fixture body (1). The upper ends of the two contact frames (22) abut against the bottom ends of the two rectangular plates (6) respectively. A rack plate (23) adapted to the positioning wheel (21) is provided on one side of the inner wall of the two contact frames (22). The two rack plates (23) are respectively engaged with the two positioning wheels (21).

8. A microcatheter tip coating impregnation fixture according to claim 7, characterized in that: Both of the contact frames (22) have multiple snap-fit ​​grooves at their bottom ends. Each of the multiple snap-fit ​​grooves has a limiting spring (24). Each of the multiple limiting springs (24) has a snap-fit ​​rod (25) at its bottom end that is compatible with the snap-fit ​​groove. The bottom ends of the multiple snap-fit ​​rods (25) are located at the bottom end of the immersion fixture body (1).

Images