Medicine coating spraying auxiliary device

Abstract

The utility model discloses a medicine coating spraying auxiliary device which is characterized in that a telescopic spraying track is arranged above a spraying protective cover, a slide way is arranged below the spraying protective cover, positioning devices at two ends of the spraying protective cover are movably arranged on the telescopic spraying track and the slide way, the positioning devices can move along the telescopic spraying track and the slide way, and the positioning devices position the spraying range. And the bottom of the spraying protection cover is provided with an air exhaust pipeline, the air exhaust pipeline can exhaust volatile solvents in the medicine coating liquid, and the residual quantity of the solvents is smaller than 10%. By the adoption of the technical scheme, safety and health of operators are guaranteed. The device is simple in structure, convenient to use, simple in procedure and easy to operate, liquid medicine can be sprayed to effective medicine carrying parts of medical instruments, the medicine carrying range is stable and controllable, and the safety and effectiveness of the medical instruments in vivo are prevented from being affected.

Description

Technical Field

[0001] This utility model relates to a drug spraying device, specifically to a drug coating spraying auxiliary device. Background Technology

[0002] In existing technologies, spraying is a crucial step in the production of drug-eluting medical devices. It involves spraying a liquid drug onto the effective drug-carrying area. This process achieves uniform coating through the movement of an ultrasonic nozzle and the rotation of the medical device. The atomized liquid drug sprayed from the ultrasonic nozzle is fan-shaped, inevitably resulting in some drug residue or drifting to the non-effective areas at the ends of the medical device. This excess drug can affect the drug content of the product, thus impacting its safety and efficacy. Furthermore, the atomized drug coating liquid during spraying also releases a large amount of volatile organic solvents, causing pollution. Utility Model Content

[0003] To address the issues mentioned above, such as the excess liquid affecting the drug content of the product and the large amount of volatile organic solvents in the atomized drug coating liquid during the spraying process causing pollution and harming human health, this utility model provides a drug coating spraying auxiliary device, the technical solution of which is as follows:

[0004] A drug coating spraying auxiliary device includes a telescopic spraying track above a spraying protective cover and a slide below it. Positioning devices at both ends of the spraying protective cover are movably mounted on the telescopic spraying track and the slide. The positioning devices can move along the telescopic spraying track and the slide to position the spraying range and ensure that only the effective drug-loaded part of the medical device is covered. The bottom of the spraying protective cover is provided with an air extraction pipe that can remove volatile solvents from the drug coating liquid, leaving less than 10% solvent residue. It can be used to spray medical devices including but not limited to balloons, stents, and catheters.

[0005] Furthermore, the sprayed protective cover is elongated in shape, such as a cylinder or prism.

[0006] Furthermore, the spray coating protective cover is made of transparent material, allowing for real-time observation of the spraying process.

[0007] Furthermore, it also includes a drug coating liquid nozzle. The telescopic spraying track includes a nozzle insertion hole, and the drug coating liquid nozzle passes through the nozzle insertion hole. The nozzle insertion hole is in close contact with the drug coating liquid nozzle. During the spraying process, the telescopic spraying track can extend and retract as the drug coating liquid nozzle moves.

[0008] Furthermore, the area around the nozzle insertion hole is made of a reversibly deformable material with adhesiveness and elasticity, which can change shape as the drug coating liquid nozzle is inserted to ensure complete coverage of the drug coating liquid nozzle.

[0009] Furthermore, the positioning devices at both ends of the outer cover include instrument insertion holes, which have a variable diameter structure; rotating the positioning devices at both ends changes the size of the instrument insertion hole. The positioning devices can be rotated according to the diameter of the balloon after inflation to adjust the diameter, but they do not contact the balloon.

[0010] Furthermore, the positioning device can be in the shape of a circular sheet, a triangular sheet, a rectangular sheet, or a polygonal sheet.

[0011] Furthermore, it also includes a detachable protrusion. The detachable protrusion is connected to the outside of the instrument insertion hole. The detachable protrusion completely covers the ineffective spraying area of ​​the medical device. The detachable protrusion has a guide wire insertion hole in the middle. The diameter of the guide wire insertion hole is larger than the diameter of the guide wire. The guide wire insertion hole allows the support guide wire to pass through during medical device spraying, but there is no contact between the guide wire insertion hole and the support guide wire.

[0012] Compared with existing technologies, the advantages of this invention are: it removes most of the organic solvent gases generated during spraying, ensuring the safety and health of operators. It is convenient to use, the process is simple and easy to operate, and it ensures that the liquid is sprayed onto the effective drug-carrying site of the medical device, making the drug-carrying range stable and controllable, thus avoiding any impact on the safety and effectiveness of the medical device in the body. Attached Figure Description

[0013] Figure 1 A front view of a drug coating spraying auxiliary device;

[0014] Figure 2 A top view of a drug coating spraying auxiliary device;

[0015] Figure 3 A top view of a telescopic spraying track of a drug coating spraying auxiliary device during telescopic extension and retraction;

[0016] Figure 4 A bottom view of a drug coating spraying auxiliary device;

[0017] Figure 5 Side view of a drug coating spraying auxiliary device

[0018] Figure 6 This is a front view of Example 1;

[0019] Figure 7 This is a side view of Example 2;

[0020] Figure 8 This is a side view of Example 3;

[0021] Figure 9 This is a side view of Example 4;

[0022] In the diagram: 1. Spraying protective cover, 2. Telescopic spraying track, 3. Slide rail, 4. Positioning device, 5. Air extraction pipeline, 6. Nozzle insertion hole, 7. Instrument insertion hole, 8. Detachable protrusion, 9. Drug coating liquid nozzle, 10. Balloon, 11. Support guide wire, 12. Guide wire insertion hole. Detailed Implementation

[0023] To facilitate understanding and implementation of this utility model by those skilled in the art, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are used to illustrate the present utility model, but it should be understood that the protection scope of the present utility model is not limited to the specific embodiments. Example

[0024] like Figure 1-6 As shown, this embodiment provides a drug coating spraying auxiliary device, which has a telescopic spraying track 2 above the spraying protective cover 1 and a slide 3 below it. The positioning devices 4 at both ends of the spraying protective cover 1 are movably set on the telescopic spraying track 2 and the slide 3. The bottom of the spraying protective cover 1 is provided with an air extraction pipe 5.

[0025] The spray-coated protective cover 1 is cylindrical in shape.

[0026] The protective cover 1 is made of transparent material.

[0027] It also includes a drug coating liquid nozzle 9, and a telescopic spraying track 2 including a nozzle insertion hole 6. The drug coating liquid nozzle 9 passes through the nozzle insertion hole 6, and the nozzle insertion hole 6 is in close contact with the drug coating liquid nozzle 9. During the spraying process, the telescopic spraying track 2 extends and retracts as the drug coating liquid nozzle 9 moves. Figure 2 and 3 As shown, this illustrates the different states in which the telescopic spraying track 2 extends and retracts as the drug coating liquid nozzle 9 moves during the spraying process.

[0028] The nozzle insertion hole 6 has elastic components on both sides that can be stretched and contracted. When the drug coating liquid nozzle 9 moves through the nozzle insertion hole 6, the elastic components on both sides of the nozzle insertion hole 6 adapt to the expansion and contraction, thereby realizing the expansion and contraction of the telescopic spraying track 2.

[0029] The nozzle socket 6 is surrounded by a reversibly deformable material with adhesive and elastic properties.

[0030] The positioning device 4 includes an instrument insertion hole 7, which has a variable diameter structure; by rotating the two ends of the positioning device 4, the diameter of the instrument insertion hole 7 changes.

[0031] The instrument insertion hole 7 is formed by the cooperation of multiple rotating plates. When the positioning device 4 rotates, the rotating plates move closer or further apart, thereby changing the size of the instrument insertion hole 7.

[0032] The positioning device 4 has a circular, sheet-like shape.

[0033] It also includes a detachable protrusion 8, which is connected to the outside of the instrument insertion hole 7. The detachable protrusion 8 completely covers the ineffective spraying area of ​​the medical device. A guide wire insertion hole 12 is provided in the middle of the detachable protrusion 8, and the diameter of the guide wire insertion hole 12 is larger than the diameter of the guide wire.

[0034] For example, the balloon 10 is inserted into the instrument port 7. The port diameter is adjusted according to the inflated diameter of the balloon 10, with the port diameter slightly larger than the balloon 10 diameter to prevent interference with the rotation of the balloon 10 during spraying. Removable protrusions 8 at both ends pass through the support guide wire 11, wrap around the conical portion of the balloon 10, and connect to the instrument port 7. The interior of the removable protrusions 8 is filled with soft, lint-free fabric, which can be used to wipe away the drug coating extending to the conical portion of the balloon 10 during spraying, ensuring that the drug is sprayed within the effective length of the drug balloon 10 and preventing drug adhesion to the non-effective conical portion of the drug balloon 10, thus avoiding affecting the safety and efficacy of the drug balloon 10 in vivo.

[0035] The drug coating liquid nozzle 9 is inserted into the nozzle socket 6 on the telescopic spraying track 2. The spraying height is adjusted, and the nozzle socket 6 is then bonded to the drug coating liquid nozzle 9. During the spraying process, the telescopic spraying track 2 extends and retracts with the movement of the drug coating liquid nozzle 9, forming a relatively sealed spraying space that prevents the diffusion of volatile gases. Throughout the entire spraying process, the exhaust pipe 5 at the bottom continuously operates to remove volatile gases, ensuring the safety and health of the operators. Example

[0036] The difference between this embodiment and embodiment 1 is that: Figure 7 As shown, the positioning devices 4 at both ends of the spray coating protective cover 1 are triangular in shape, and the spray coating protective cover 1 is prismatic in shape. Example

[0037] The difference between this embodiment and embodiment 1 is that: Figure 8 As shown, the positioning devices 4 at both ends of the spray coating protective cover 1 are rectangular plates, and the spray coating protective cover 1 is prismatic. Example

[0038] The difference between this embodiment and embodiment 1 is that: Figure 9 As shown, the positioning devices 4 at both ends of the spray protective cover 1 are polygonal in shape.

[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A drug coating spraying auxiliary device, characterized in that, The spray protective cover (1) is provided with a telescopic spraying track (2) above and a slide (3) below. The positioning devices (4) at both ends of the spray protective cover (1) are movably set on the telescopic spraying track (2) and the slide (3). The bottom of the spray protective cover (1) is provided with an air extraction pipe (5).

2. The drug coating spraying auxiliary device according to claim 1, characterized in that, The sprayed protective cover (1) is long and narrow.

3. The drug coating spraying auxiliary device according to claim 1, characterized in that, The spray-coated protective cover (1) is made of transparent material.

4. The drug coating spraying auxiliary device according to claim 1, characterized in that, It also includes a drug coating liquid nozzle (9), the telescopic spraying track (2) includes a nozzle insertion hole (6), the drug coating liquid nozzle (9) passes through the nozzle insertion hole (6), the nozzle insertion hole (6) is in close contact with the drug coating liquid nozzle (9), and the telescopic spraying track (2) can extend and retract as the drug coating liquid nozzle (9) moves during the spraying process.

5. The drug coating spraying auxiliary device according to claim 4, characterized in that, The nozzle insertion hole (6) is surrounded by a reversibly deformable material with adhesiveness and elasticity.

6. The drug coating spraying auxiliary device according to claim 1, characterized in that, The positioning device (4) includes an instrument insertion hole (7), which has a variable aperture structure; by rotating both ends of the positioning device (4), the aperture size of the instrument insertion hole (7) changes.

7. The drug coating spraying auxiliary device according to claim 1, characterized in that, The positioning device (4) has the following shapes: circular, triangular, rectangular, and polygonal.

8. The drug coating spraying auxiliary device according to claim 6, characterized in that, It also includes a detachable protrusion (8), which is connected to the outside of the instrument insertion hole (7). The detachable protrusion (8) completely covers the ineffective spraying area of ​​the medical device. A guide wire insertion hole (12) is provided in the middle of the detachable protrusion (8), and the diameter of the guide wire insertion hole (12) is larger than the diameter of the guide wire.

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