Spring fixing cover for transdermal diffusion equipment
By using the spring-loaded cap design, the elastic pressure of the spring and the anti-slip texture design solve the problems of sample instability and leakage in traditional drug fixation methods, thus achieving the accuracy and repeatability of the experiment.
Patent Information
- Application Number
- CN202520412717.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional drug fixation methods result in unstable sample fixation, leakage, and complex procedures, affecting experimental accuracy and reproducibility.
The spring-loaded cover consists of an outer cover and an inner cover. The spring is fitted into the inner cover, and the elastic pressure of the spring ensures sample stability. Combined with the anti-slip texture and external thread design, it simplifies operation.
It improves the stability of samples in transdermal diffusion devices, avoids leakage and displacement, ensures experimental accuracy and repeatability, and is easy to operate.
Smart Images
Figure CN223851211U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drug testing equipment technology, and more specifically to a spring-loaded fixing cover for transdermal diffusion equipment. Background Technology
[0002] In in vitro drug release or in vitro permeation tests, drug fixation is a crucial step. Traditional drug delivery methods typically rely on clamps, knobs, etc., but these methods generally suffer from the following problems: 1. Insecure sample fixation: Clamps or knob-type caps are prone to uneven or insufficient pressure, causing the sample to shift during the experiment, affecting the accuracy of the results. 2. Leakage: Due to insufficient pressure at the contact surface between the sample loading chamber and the receiving chamber, the sample can easily leak from the loading ring, especially during vibration or temperature changes during the experiment. 3. Complex operation: Traditional clamping or knob-type loading requires multiple adjustments, is cumbersome, and makes it difficult to ensure consistent fixing force each time, affecting the reproducibility of the experiment. Utility Model Content
[0003] In view of this, the present invention provides a spring-loaded fixing cap for transdermal diffusion devices, the purpose of which is to solve the problems existing in the prior art.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A spring-loaded cover for a transdermal diffusion device includes: an outer cover and an inner cover; the inner cover is fitted inside the outer cover; a spring is fitted on the outer side of the inner cover; one end of the spring abuts against the upper end of the outer cover; and the other end of the spring abuts against the lower end of the inner cover.
[0006] Preferably, the outer surface of the upper end of the outer cover is provided with anti-slip texture.
[0007] Preferably, the outer surface of the lower end of the outer cover is provided with external threads.
[0008] Preferably, a first limiting ring is provided on the inner surface of the upper end of the outer cover; a second limiting ring is provided on the outer surface of the lower end of the inner cover; one end of the spring abuts against the lower end face of the first limiting ring; and the other end of the spring abuts against the upper end face of the second limiting ring.
[0009] Preferably, the upper end of the inner cover is provided with an annular limiting protrusion; the annular limiting protrusion is located above the first limiting ring.
[0010] Preferably, the inner cover has a cavity in the middle.
[0011] The present invention achieves the following technical advantages over the prior art:
[0012] 1) This invention uses the elastic pressure of a spring to ensure that the sample remains stable in the transdermal diffusion device, avoiding leakage and sample displacement, thereby improving the accuracy and repeatability of the experiment.
[0013] 2) This utility model can make the sample fixing device fit tightly against the sample under the pressure of the spring, ensuring that the sample will not leak due to vibration or temperature changes during the experiment.
[0014] 3) This utility model improves the ease of operation by setting anti-slip texture on the outer surface of the outer cover, making it easier for users to tighten or open the fixed cover.
[0015] 4) The built-in spring design of this utility model can ensure that the fixing force is consistent each time, thus improving the repeatability of the experiment. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a spring-loaded fixing cover for a transdermal diffusion device according to the present invention;
[0017] Figure 2 This is a schematic diagram of the present invention used in conjunction with a transdermal diffusion device;
[0018] Figure 3 This is a schematic diagram from another perspective when the present invention is used in conjunction with a transdermal diffusion device;
[0019] Figure 4 This is a cross-sectional view of the present invention when used in conjunction with a transdermal diffusion device;
[0020] In the diagram: 1. Outer cover; 2. Inner cover; 3. Spring; 4. First limiting ring; 5. Second limiting ring; 6. Annular limiting protrusion; 7. Cavity. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example
[0023] Reference Figure 1-4As shown, this utility model discloses a spring-loaded fixing cover for a transdermal diffusion device, comprising: an outer cover 1 and an inner cover 2; the inner cover 2 is fitted inside the outer cover 1; the fixing cover is installed together with the sample slot of the transdermal diffusion cell through the outer cover 1; a spring 3 is fitted on the outer side of the inner cover 2; one end of the spring 3 abuts against the upper end of the outer cover 1; the other end of the spring 3 abuts against the lower end of the inner cover 2; in use, the spring-loaded fixing cover is first installed on the sample slot of the transdermal diffusion cell, and then the outer cover 1 is moved downwards. The spring 3 is compressed and generates elastic force. Under the action of the elastic force of the spring 3, the inner cover 2 presses the sample fixing device tightly, so that the sample fixing device fits the sample tightly, preventing the sample from shifting or leaking due to vibration or temperature changes during the experiment. When the experiment is over, the outer cover 1 is moved upwards, and the elastic pressure of the spring 3 is gradually released, and the fixing cover is easily opened to remove the sample.
[0024] The above technical solution, through the elastic pressure of the spring, can ensure that the sample remains stable in the transdermal diffusion device, avoiding leakage and sample displacement, thereby improving the accuracy and repeatability of the experiment.
[0025] In this embodiment, the outer surface of the upper end of the outer cover 1 is provided with anti-slip texture, which makes it easy for the user to tighten or loosen the fixing cover and avoid the fixing cover not being completely fixed due to slipping.
[0026] In this embodiment, the outer surface of the lower end of the outer cover 1 is provided with an external thread, which facilitates the threaded connection of the outer cover 1 with the transdermal diffusion pool. In use, the outer cover can be rotated to control its up and down movement.
[0027] In this embodiment, a first limiting ring 4 is provided on the upper inner surface of the outer cover 1; a second limiting ring 5 is provided on the lower outer surface of the inner cover 2; one end of the spring 3 abuts against the lower end face of the first limiting ring 4; and the other end of the spring 3 abuts against the upper end face of the second limiting ring 5.
[0028] In this embodiment, the inner cover 2 is provided with an annular limiting protrusion 6 at its upper end; the annular limiting protrusion 6 is located above the first limiting ring 4.
[0029] In this embodiment, the inner cover 2 has a cavity 7 in the middle to facilitate the observation of the sample.
[0030] In this embodiment, the outer cover 1, the inner cover 2, the first limiting ring 4, the second limiting ring 5, and the annular limiting protrusion 6 are all made of corrosion-resistant material.
[0031] In this embodiment, the outer cover 1 and the first limiting ring 4 are an integral structure.
[0032] In this embodiment, the annular limiting protrusion 6 and the inner cover 2 are an integral structure.
[0033] In this embodiment, the second limiting ring 5 is threadedly connected to the inner cover 2 for easy disassembly and assembly.
[0034] The method of using the spring-loaded retainer cap for the transdermal diffusion device described above includes the following steps:
[0035] S1: Place the test sample in the sample slot of the transdermal diffusion cell;
[0036] S2: Place the spring retaining cap on the sample slot opening to ensure that the sample retaining device is in contact with the sample;
[0037] S3: The anti-slip texture on the outer surface of the outer cover 1 allows the user to easily tighten the outer cover 1; the spring 3 generates elastic pressure during the tightening process, applying a downward force to the inner cover 2 to ensure that the sample fixing device fits the sample tightly and prevents the sample from shifting.
[0038] S4: When the spring-fixed cap is tightened, the sample remains stable under the elastic pressure of spring 3, and the transdermal diffusion experiment is carried out; during the experiment, the sample will not shift or leak due to vibration or temperature changes.
[0039] S5: After the experiment is over, the user only needs to rotate the outer cover 1 in the opposite direction. The elastic pressure of the spring 3 will be gradually released, and the spring-fixed cover can be easily opened to remove the sample.
[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A spring retaining cap for a transdermal diffusion device, characterized by Include: The outer cover (1) and the inner cover (2); the inner cover (2) is sleeved in the outer cover (1); the outer side of the inner cover (2) is sleeved with a spring (3); one end of the spring (3) abuts on the upper end of the outer cover (1); the other end of the spring (3) abuts on the lower end of the inner cover (2).
2. A spring retainer cap for a transdermal diffusion device according to claim 1, wherein The outer surface of the upper end of the outer cover (1) is provided with anti-skid lines.
3. A spring retainer cover for a transdermal diffusion device according to claim 1, wherein The outer surface of the lower end of the outer cover (1) is provided with external threads.
4. A spring retainer cover for a transdermal diffusion device according to claim 1, wherein The inner surface of the upper end of the outer cover (1) is provided with a first limiting ring (4); the outer surface of the lower end of the inner cover (2) is provided with a second limiting ring (5); one end of the spring (3) abuts on the lower end face of the first limiting ring (4); the other end of the spring (3) abuts on the upper end face of the second limiting ring (5).
5. A spring retainer cover for a transdermal diffusion device according to claim 4, wherein The upper end of the inner cover (2) is provided with an annular limiting protrusion (6); the annular limiting protrusion (6) is located above the first limiting ring (4).
6. A spring retainer cover for a transdermal diffusion device according to claim 1, wherein The middle part of the inner cover (2) is provided with a cavity (7).