Auxiliary device for intraoral solid-phase microextraction

Abstract

The utility model discloses an auxiliary device for intraoral solid phase microextraction, which relates to the technical field of volatile gas detection and comprises a first straight pipe and a second straight pipe, and the outer diameter of the first straight pipe is smaller than that of the second straight pipe; one end of the first straight pipe is connected with the second straight pipe through the connecting pipe, the first straight pipe, the connecting pipe and the second straight pipe are coaxial, and the outer diameter of the connecting pipe is gradually increased from one end close to the first straight pipe to the other end; a sealing ring is arranged at one end of the second straight pipe away from the first straight pipe. And the intraoral solid-phase microextraction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of volatile gas detection, in particular to an auxiliary device for intraoral solid phase microextraction. Background Art

[0002] Volatile gas detection has important applications in fields such as food science, environmental monitoring, and medical diagnostics. Headspace solid-phase microextraction (SPME) is a widely used technique for extracting and enriching volatile compounds. This method typically involves placing a sample in a sealed container and heating it to induce the volatile components to evaporate and reach equilibrium between the gas-liquid or gas-solid phases. These volatile components are then adsorbed and concentrated using a fused silica fiber coated with a specific stationary phase, and ultimately analyzed using instruments such as gas chromatography-mass spectrometry.

[0003] However, when it comes to detecting volatile gases from food during oral processing, the traditional in vitro HS-SPME method cannot accurately simulate the real human oral environment. Therefore, a new technology has been developed in recent years: intraoral solid-phase microextraction (SPME), which can more directly collect and analyze volatile components in the oral cavity.

[0004] Existing intraoral solid-phase microextraction (SPME) techniques involve placing a fused silica fiber coated with a stationary phase directly into the mouth of a food taster after they ingest a food sample. This is done via a SPME handle, which typically includes a thin plastic tube to facilitate operation. However, this design has the following drawbacks:

[0005] (1) The mouth of the taster was not completely sealed from the plastic tube, nor was the plastic tube from the solid phase microextraction handle. This resulted in some volatile components escaping and failing to be effectively captured. Furthermore, the small headspace volume of the fused silica fiber affected the adsorption efficiency and the accuracy of the analytical results.

[0006] (2) It is inconvenient to control the length of the solid phase microextraction handle and the plastic tube inserted into the mouth of the evaluator, which may cause the solid phase microextraction handle and the plastic tube to collide with the mouth of the evaluator when inserted into the patient's mouth, causing damage to the mouth and tongue of the evaluator, making it unsafe to use. Utility Model Content

[0007] The purpose of the utility model is to provide an auxiliary device for intraoral solid phase microextraction to solve the problems existing in the above-mentioned prior art and improve the efficiency of intraoral solid phase microextraction.

[0008] To achieve the above purpose, the present invention provides the following solutions:

[0009] The utility model provides an auxiliary device for intraoral solid-phase microextraction, comprising a first straight tube and a second straight tube, wherein the outer diameter of the first straight tube is smaller than the outer diameter of the second straight tube; one end of the first straight tube is connected to the second straight tube via a connecting tube, the first straight tube, the connecting tube and the second straight tube are coaxial, and the outer diameter of the connecting tube gradually increases from one end close to the first straight tube to the other end;

[0010] A sealing ring is provided at one end of the second straight tube away from the first straight tube, and the inner ring of the sealing ring is used for interference fit with the solid phase microextraction handle.

[0011] Preferably, the first straight pipe and the second straight pipe are respectively connected to the connecting pipe in an arc transition manner.

[0012] Preferably, one end of the first straight tube away from the second straight tube is rounded.

[0013] Preferably, one end of the second straight tube away from the first straight tube is rounded.

[0014] Preferably, the length of the first straight tube is 40mm~45mm, the length of the connecting tube is 10mm~15mm, the length of the second straight tube is 30mm~40mm, the outer diameter of the first straight tube is 10mm~11mm, the inner diameter of the first straight tube is 9mm~9.9mm, the outer diameter of the second straight tube is 15mm~16mm, and the inner diameter of the second straight tube is 14mm~14.9mm.

[0015] Preferably, the sealing ring is bonded to the second straight tube.

[0016] Preferably, the sealing ring is made of silicone.

[0017] The present invention also provides a method for using the auxiliary device for intraoral solid phase microextraction, comprising the following steps:

[0018] S1. First, pass the solid phase microextraction handle through the auxiliary device for intraoral solid phase microextraction, so that the solid phase microextraction handle and the sealing ring have an interference fit, and the extraction head of the solid phase microextraction handle is located in the first straight tube;

[0019] S2. Insert the first straight tube into the mouth of the person to be subjected to solid phase microextraction, and make the lips of the person fit into the outer wall of the connecting tube;

[0020] S3. After waiting for 1 to 2 minutes, the first straight tube is removed from the person's mouth, and then the solid phase microextraction handle is removed from the auxiliary device for intraoral solid phase microextraction, thereby completing the intraoral solid phase microextraction.

[0021] Compared with the prior art, the utility model has achieved the following technical effects:

[0022] The auxiliary device for intraoral solid-phase microextraction of the utility model forms a relatively good sealing effect through the sealed connection between the sealing ring and the solid-phase microextraction handle and the fit between the lips of the person being microextracted and the connecting tube, thereby ensuring that volatile components are effectively captured, improving the adsorption efficiency, and thus improving the efficiency of intraoral solid-phase microextraction.

[0023] In the auxiliary device for intraoral solid phase microextraction of the present invention, the extraction head of the solid phase microextraction handle is placed in the first inner tube, which provides a larger headspace volume for the extraction head to adsorb volatile components, thereby improving the adsorption efficiency.

[0024] Furthermore, by making the sealing ring and the solid phase microextraction handle have an interference fit, the stability of the posture of the solid phase microextraction handle can be ensured, thereby ensuring the stability of the solid phase microextraction process.

[0025] Furthermore, the diameter of the connecting tube gradually increases from one end close to the first straight tube to the other end, providing a positioning function for placing the auxiliary device in the mouth of the person being micro-extracted, so that the person being micro-extracted can be judged to be placed in place when the lips of the person being micro-extracted touch the connecting part, which is convenient to use; in addition, it also prevents the mouth and tongue of the person being micro-extracted from being damaged due to the depth of inserting the auxiliary device too deep, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic structural diagram of the auxiliary device for intraoral solid phase microextraction of the present invention;

[0028] Figure 2 This is a schematic structural diagram of a sealing ring in an auxiliary device for intraoral solid phase microextraction according to the present invention;

[0029] Figure 3 This is a schematic diagram of the auxiliary device for intraoral solid phase microextraction of the present invention used in conjunction with the solid phase microextraction handle;

[0030] In the figure: 100, auxiliary device for intraoral solid-phase microextraction; 1, first straight tube; 2, connecting tube; 3, second straight tube; 4, sealing ring; 5, solid-phase microextraction handle; 6, extraction head. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The purpose of the utility model is to provide an auxiliary device for intraoral solid phase microextraction to solve the problems existing in the above-mentioned prior art and improve the efficiency of intraoral solid phase microextraction.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] Example 1

[0035] like Figures 1 to 2 As shown, this embodiment provides an auxiliary device 100 for intraoral solid-phase microextraction, comprising a first straight tube 1 and a second straight tube 3. The outer diameter of the first straight tube 1 is smaller than the outer diameter of the second straight tube 3. One end of the first straight tube 1 is connected to the second straight tube 3 via a connecting tube 2. The first straight tube 1, the connecting tube 2, and the second straight tube 3 are coaxial, and the outer diameter of the connecting tube 2 gradually increases from one end close to the first straight tube 1 to the other end.

[0036] A sealing ring 4 is provided at one end of the second straight tube 3 away from the first straight tube 1 . The inner ring of the sealing ring 4 is used for interference fit with the solid phase microextraction handle 5 , and the sealing ring 4 is sealed and connected to the solid phase microextraction handle 5 .

[0037] In this embodiment, the diameter of the connecting tube 2 gradually increases from one end close to the first straight tube 1 to the other end, providing a positioning function for placing the auxiliary device in the mouth of the person being micro-extracted, so that the person being micro-extracted can be judged to be placed in place when the lips of the person being micro-extracted touch the connecting part, which is convenient to use; in addition, it also prevents the mouth and tongue of the person being micro-extracted from being damaged by inserting the auxiliary device too deep, thereby improving the safety of use.

[0038] In the optional scheme of this embodiment, it is more preferred that the first straight tube 1 and the second straight tube 3 are respectively connected to the connecting tube 2 with an arc transition, so that it is convenient for the lips of the extracted person to wrap the connecting tube 2, so that there is a better sealing between the lips of the extracted person and the connecting tube 2.

[0039] In the optional scheme of this embodiment, it is more preferred that the end of the first straight tube 1 away from the second straight tube 3 is rounded to avoid hurting the mouth and tongue of the person being extracted when the first straight tube 1 is extended into the mouth of the person being extracted, thereby improving the safety of use.

[0040] In the optional solutions of this embodiment, it is more preferred that the end of the second straight tube 3 away from the first straight tube 1 is rounded to avoid unnecessary scratches caused by the operator during operation, thereby improving safety of use.

[0041] In the optional scheme of this embodiment, it is more preferred that the length of the first straight tube 1 is 40mm~45mm, the length of the connecting tube 2 is 10mm~15mm, the length of the second straight tube 3 is 30mm~40mm, the outer diameter of the first straight tube 1 is 10mm~11mm, the inner diameter of the first straight tube 1 is 9mm~9.9mm, the outer diameter of the second straight tube 3 is 15mm~16mm, and the inner diameter of the second straight tube 3 is 14mm~14.9mm.

[0042] In an optional solution of this embodiment, it is more preferred that the sealing ring 4 is bonded to the second straight tube 3 .

[0043] In the optional solution of this embodiment, it is more preferred that the material of the sealing ring 4 is silicone.

[0044] Example 2

[0045] This embodiment provides a method for using the auxiliary device 100 for intraoral solid phase microextraction according to embodiment 1, comprising the following steps:

[0046] S1. First, pass the solid phase microextraction handle 5 through the auxiliary device 100 for intraoral solid phase microextraction, so that the solid phase microextraction handle 5 and the sealing ring 4 have an interference fit, and the extraction head 6 of the solid phase microextraction handle 5 is located in the first straight tube 1, as shown in FIG. Figure 3 As shown;

[0047] S2. Insert the first straight tube 1 into the mouth of the person to be subjected to solid phase microextraction, and make the person's lips fit against the outer wall of the connecting tube 2;

[0048] S3. After waiting for 1 to 2 minutes, the first straight tube 1 is removed from the person's mouth, and then the solid phase microextraction handle 5 is removed from the auxiliary device 100 for intraoral solid phase microextraction, thereby completing the intraoral solid phase microextraction.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An auxiliary device for intraoral solid phase microextraction, characterized by: The invention comprises a first straight pipe and a second straight pipe, wherein the outer diameter of the first straight pipe is smaller than the outer diameter of the second straight pipe; one end of the first straight pipe is connected to the second straight pipe via a connecting pipe, the first straight pipe, the connecting pipe and the second straight pipe are coaxial, and the outer diameter of the connecting pipe gradually increases from one end close to the first straight pipe to the other end; A sealing ring is provided at one end of the second straight tube away from the first straight tube, and the inner ring of the sealing ring is used for interference fit with the solid phase microextraction handle.

2. The auxiliary device for intraoral solid phase microextraction according to claim 1, characterized in that: The first straight pipe and the second straight pipe are respectively connected to the connecting pipe in an arc transition manner.

3. The auxiliary device for intraoral solid phase microextraction according to claim 1, characterized in that: One end of the first straight tube away from the second straight tube is rounded.

4. The auxiliary device for intraoral solid phase microextraction according to claim 1, characterized in that: An end of the second straight tube away from the first straight tube is rounded.

5. The auxiliary device for intraoral solid phase microextraction according to claim 1, characterized in that: The length of the first straight tube is 40mm~45mm, the length of the connecting tube is 10mm~15mm, the length of the second straight tube is 30mm~40mm, the outer diameter of the first straight tube is 10mm~11mm, the inner diameter of the first straight tube is 9mm~9.9mm, the outer diameter of the second straight tube is 15mm~16mm, and the inner diameter of the second straight tube is 14mm~14.9mm.

6. The auxiliary device for intraoral solid phase microextraction according to claim 1, characterized in that: The sealing ring is bonded to the second straight tube.

7. The auxiliary device for intraoral solid phase microextraction according to claim 1, characterized in that: The material of the sealing ring is silicone.

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