一种唾液收集装置
By employing a sealed membrane and plunger structure within the reagent tube in the saliva collection device, combined with an integrated design of the collection tube and the preservation liquid tube, the problems of step-by-step assembly and waste disposal in existing devices are solved, enabling quantitative collection and mixing, and improving the accuracy and convenience of detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI LIVZON CYNVENIO DIAGNOSTICS
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing saliva collection devices require step-by-step assembly, which poses risks of accidental contact with the preservation solution, easy confusion of components, and problems with medical waste disposal, affecting the reliability of testing and ease of operation.
A saliva collection device was designed, which uses an internal sealing membrane in the reagent tube to separate the open cavity and the closed cavity. The saliva is mixed with the preservation solution by puncturing the sealing membrane with a plunger. Combined with the integrated design of the collection tube and the preservation solution tube, quantitative collection and mixing are achieved through interference fit and one-way locking structure.
The simplified operating procedure ensures a precise quantitative mixing ratio of samples, avoids sample contamination and medical waste generation, and improves the accuracy and convenience of testing.
Smart Images
Figure CN224505474U_ABST
Abstract
Claims
1. A saliva collection device, characterized in that, include: A reagent tube, wherein a sealing membrane is provided inside the reagent tube to divide the lumen of the reagent tube into an open cavity and a closed cavity, the open cavity being used to collect saliva samples and the closed cavity being used to contain preservation solution reagent; The tube cap includes a cap top and a plunger. A first end of the plunger is fixed to the inner surface of the cap top, and a second end of the plunger has a pointed structure. The cap top is used to seal the entrance of the open cavity. The plunger extends into the lumen of the reagent tube and the pointed structure is able to pierce the sealing membrane, so that the saliva sample in the open cavity flows into the sealed cavity and mixes with the preservation solution reagent.
2. The saliva collection device of claim 1, wherein, The reagent tube includes: A storage liquid tube, wherein the sealing membrane is provided at the inlet of the storage liquid tube to form the sealed cavity inside the storage liquid tube, and a first connecting structure is formed on the outer wall of the storage liquid tube near the inlet; The collection tube has openings at both ends to form the open cavity. A first mating structure adapted to the first connecting structure is formed on the inner wall of the collection tube near the outlet, so that the collection tube and the storage liquid tube can be detachably connected.
3. The saliva collection device according to claim 2, characterized in that, The open cavity includes an overflow cavity and a metering cavity. The outlet of the overflow cavity is connected to the inlet of the metering cavity. The inner diameter of the overflow cavity is larger than the inner diameter of the metering cavity. The plunger is clearance-fitted with the inner wall of the overflow cavity, and the plunger is interference-fitted with the inner wall of the metering cavity.
4. The saliva collection device of claim 3, wherein, The volume of the quantitative chamber is adapted to the volume of the preservation solution reagent in the preservation solution tube in a predetermined ratio.
5. The saliva collection device of claim 3, wherein, The inlet inner diameter of the overflow cavity is larger than the outlet inner diameter of the overflow cavity.
6. The saliva collection device of claim 3, wherein, The axial length of the plunger is greater than the sum of the axial height of the overflow cavity and the axial height of the metering cavity. The axial length of the tip structure of the plunger is less than the axial height of the metering cavity.
7. The saliva collection device of claim 3, wherein, A second connection structure is formed on the outer wall of the collection tube near the inlet. The top of the cover has a second mating structure adapted to the second connecting structure.
8. The saliva collection device of claim 7, wherein, The outer wall of the collecting tube has a radially outwardly extending flange near the inlet, and multiple check teeth are formed on the flange. The cap is connected to the inner top surface of the plunger to form a groove, the first end of the plunger is connected to the top surface of the groove, and a plurality of cap ratchet teeth are formed on the side wall of the groove.
9. The saliva collection device of claim 3, wherein, The outer wall of the collection tube is printed with quantitative graduation lines corresponding to the entrance of the quantitative cavity.
10. The saliva collection device of claim 1, wherein, The plunger includes a column and a tip structure. A first end of the column is connected to the top of the cap, and a second end of the column is connected to the first end of the tip structure. The second end of the plunger is formed as a chamfered isolation surface. The chamfered isolation surface of the plunger is formed as an arc-shaped curved edge near the edge of the reagent tube. The tip structure includes at least one tip body.