Sample introduction mechanism of medical mass spectrometer

Abstract

The utility model discloses a sample introduction mechanism of a medical mass spectrometer. The sample introduction mechanism comprises a supporting plate, a supporting frame is fixed on one side of the top end of the supporting plate, a connecting plate is fixed on one side of a threaded block, a sample introduction box is installed at the top end of the connecting plate, and the bottom end of the sample introduction box is connected with a sample introduction needle. The supporting frame is installed on one side of the top end of the supporting plate, the supporting frame is reinforced and fixed through the first reinforcing plate, then installation of the working motor can be completed under the condition that the installation groove is formed, and the working motor can drive the threaded rod to rotate after working. At the moment, a threaded groove in the threaded block is matched with the threaded block to form a vertical travel path, and a connecting plate is fixed on the side edge of the threaded block, so that the height of the connecting plate can be changed in the travel path process of the threaded block, and the sample injection box and the sample injection needle can be matched to complete sample injection, so that the height adjusting capacity is improved in the working process; and the convenience in the sampling process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mass spectrometer sample injection, in particular to a sample injection mechanism of a medical mass spectrometer. Background Art

[0002] A mass spectrometer is a medical device that uses mass spectrometry technology. It can analyze molecules in biological samples, identify and quantify various compounds, thereby providing structural and functional information of biological molecules, providing important assistance for disease diagnosis and treatment. Therefore, mass spectrometers are mainly used in clinical medicine. Mass spectrometers are often used for drug metabolism research, toxicology research, etc.

[0003] When the mass spectrometer is used for detection, the sample needs to be introduced into the mass spectrometer for analysis first, so an injection mechanism is needed to complete the injection work. During the injection, if manual injection is used, it is easy to bring a large workload to the staff, and if the distance from the injection port is far, the sample overflow problem is very likely to occur, affecting the injection effect. Utility Model Content

[0004] The purpose of the utility model is to provide a sample injection mechanism for a medical mass spectrometer to solve the problem raised in the above background technology that when injecting samples, if manual injection is used, it is easy to bring a large workload to the staff, and if the position is far away from the injection port, sample overflow is very likely to occur, affecting the injection effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sample injection mechanism of a medical mass spectrometer, comprising a support plate, a support frame is fixed to one side of the top of the support plate, a mass spectrometer body is installed on the other side of the top of the support plate, a first reinforcing plate is fixed to both sides of the bottom of the support frame, a threaded rod is installed inside the support frame, a mounting groove is provided at the bottom end of the threaded rod, a working motor is installed inside the mounting groove, a guide rod is provided on one side of the threaded rod, a threaded block is connected to the outer wall of the threaded rod, a threaded groove is provided inside the threaded block, a connecting plate is fixed to one side of the threaded block, an injection box is installed on the top of the connecting plate, and an injection needle is connected to the bottom end of the injection box.

[0006] Preferably, a threaded connection is formed between the thread groove and the threaded rod, and the first reinforcing plates are symmetrically distributed about the vertical center axis of the support frame.

[0007] Preferably, baffles are installed at positions near the bottom of both sides of the injection needle, a retaining spring is connected between the baffle and the injection needle, and the baffles are symmetrically distributed about the vertical center axis of the injection needle.

[0008] Preferably, second reinforcing plates are fixed to the top and bottom ends of one side of the connecting plate, and the second reinforcing plates are symmetrically distributed about the horizontal center axis of the connecting plate.

[0009] Preferably, a heat conducting sheet is installed on one side of the working motor, a flow groove is opened on one side of the mounting groove, and a filter is installed on one side inside the flow groove.

[0010] Preferably, an observation window is installed at one end of the support frame, and an injection port is installed on one side of the top of the mass spectrometer body.

[0011] Preferably, a mounting bracket is installed at the top of the mass spectrometer body at positions on both sides of the injection port, side panels are installed on both sides of the injection port, a buffer plate is connected to the outer wall of the mounting bracket, a buffer spring is installed between the buffer plate and the side plate, and rubber rings are installed at the top and bottom of the buffer plate.

[0012] Preferably, the side panels are symmetrically distributed about the vertical center axis of the injection port, and the mounting brackets are symmetrically distributed about the vertical center axis of the injection port.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the sample injection mechanism of the medical mass spectrometer not only improves the height adjustment capability of the sample injection mechanism, but also improves the sampling buffer capacity and working heat dissipation capacity of the sample injection mechanism;

[0014] (1) The support frame is installed on one side of the top of the support plate, and the first reinforcing plate is used to reinforce and fix it. Then, the installation of the working motor can be completed under the opening of the installation groove. After the working motor works, it can drive the threaded rod to rotate. At this time, the threaded groove inside the threaded block cooperates with it to form a vertical path. Then, since the side of the threaded block fixes the connecting plate, the height of the connecting plate can be changed during the movement of the threaded block. In this way, the injection box and the injection needle can cooperate to complete the injection, thereby improving the height adjustment ability during the work process and improving the convenience of the sampling process;

[0015] (2) The injection port is installed on one side of the top of the mass spectrometer body, and the mounting frame is arranged on both sides of the injection port. When the injection needle is injecting, the injection needle is lowered to the notch position of the buffer plate, and the rubber ring is used to provide upper and lower protection. At the same time, the baffle plate is retracted and extended to a certain extent, and the buffer plate gradually descends while the buffer spring is contracted, so as to achieve the purpose of buffering and protecting the injection port, thereby better improving the overall buffering capacity during the working process;

[0016] (3) The heat conducting sheet is installed on the side of the working motor, specifically inside the mounting groove, and the flow groove and the mounting groove are interconnected. When the flow groove is opened, air can circulate. At this time, the filter can be filtered while the heat conducting sheet can conduct heat and dissipate heat. Therefore, the overall heat dissipation protection capability is better improved during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a partial front view structural schematic diagram of the utility model;

[0019] Figure 3 It is a partial front view cross-sectional schematic diagram of the flow channel of the utility model;

[0020] Figure 4 For the utility model Figure 1 Schematic diagram of the enlarged cross-section structure at point A in the middle.

[0021] In the figure: 1. support plate; 2. support frame; 3. first reinforcing plate; 4. injection port; 5. mass spectrometer body; 6. baffle; 7. injection needle; 8. connecting plate; 9. injection box; 10. second reinforcing plate; 11. threaded block; 12. threaded groove; 13. guide rod; 14. threaded rod; 15. mounting groove; 16. working motor; 17. observation window; 18. heat conducting plate; 19. filter; 20. circulation groove; 21. buffer plate; 22. rubber ring; 23. side plate; 24. buffer spring; 25. mounting frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides an embodiment: a sample injection mechanism of a medical mass spectrometer, comprising a support plate 1, a support frame 2 is fixed on one side of the top of the support plate 1, a mass spectrometer body 5 is installed on the other side of the top of the support plate 1, a first reinforcing plate 3 is fixed on both sides of the bottom of the support frame 2, a threaded rod 14 is installed inside the support frame 2, a mounting groove 15 is provided at the bottom end of the threaded rod 14, a working motor 16 is installed inside the mounting groove 15, a guide rod 13 is provided on one side of the threaded rod 14, a threaded block 11 is connected to the outer wall of the threaded rod 14, a threaded groove 12 is provided inside the threaded block 11, a connecting plate 8 is fixed on one side of the threaded block 11, a sample injection box 9 is installed on the top of the connecting plate 8, and a sample injection needle 7 is connected to the bottom end of the sample injection box 9;

[0024] A threaded connection is formed between the thread groove 12 and the threaded rod 14, and the first reinforcing plate 3 is symmetrically distributed about the vertical center axis of the support frame 2;

[0025] Baffles 6 are installed near the bottom of both sides of the injection needle 7, and a retaining spring is connected between the baffles 6 and the injection needle 7. The baffles 6 are symmetrically distributed about the vertical center axis of the injection needle 7.

[0026] A second reinforcing plate 10 is fixed to the top and bottom ends of one side of the connecting plate 8, and the second reinforcing plates 10 are symmetrically distributed about the horizontal center axis of the connecting plate 8;

[0027] A heat conducting sheet 18 is installed on one side of the working motor 16, a flow slot 20 is opened on one side of the installation slot 15, and a filter screen 19 is installed on one side inside the flow slot 20;

[0028] An observation window 17 is installed at one end of the support frame 2, and an injection port 4 is installed on one side of the top of the mass spectrometer body 5;

[0029] A mounting frame 25 is installed at the top of the mass spectrometer body 5 at the positions on both sides of the injection port 4, and side plates 23 are installed on both sides of the injection port 4. The outer wall of the mounting frame 25 is connected to a buffer plate 21, and a buffer spring 24 is installed between the buffer plate 21 and the side plate 23. Rubber rings 22 are installed at the top and bottom of the buffer plate 21.

[0030] The side plates 23 are symmetrically distributed about the vertical center axis of the injection port 4, and the mounting brackets 25 are symmetrically distributed about the vertical center axis of the injection port 4;

[0031] Furthermore, a slot is provided inside the buffer plate 21 for the injection needle 7 to work. After the injection needle 7 descends to the slot, the rubber ring 22 performs buffering protection, and the baffle 6 retracts inward to reduce contact wear.

[0032] Working principle: First, install the support frame 2 on one side of the top of the support plate 1, and use the first reinforcing plate 3 to reinforce and fix it, and then the installation of the working motor 16 can be completed under the opening of the installation groove 15. After the working motor 16 works, it can drive the threaded rod 14 to rotate. At this time, the threaded groove 12 inside the threaded block 11 cooperates with it to form a vertical path, and then because the side of the threaded block 11 fixes the connecting plate 8, the height of the connecting plate 8 can be changed during the movement of the threaded block 11. At this time, the injection needle 7 gradually descends to the position of the injection port 4, and the rubber ring 22 completes the upper and lower protection. At the same time, the baffle 6 is retracted and expanded to a certain extent, and the buffer spring 24 contracts while the buffer plate 21 gradually descends, which serves the purpose of buffering and protecting the injection port 4, and finally the injection needle 7 and the injection box 9 cooperate to complete the injection.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A sample injection mechanism for a medical mass spectrometer, comprising a support plate (1), characterized in that: A support frame (2) is fixed to one side of the top of the support plate (1), a mass spectrometer body (5) is installed on the other side of the top of the support plate (1), a first reinforcing plate (3) is fixed to both sides of the bottom of the support frame (2), a threaded rod (14) is installed inside the support frame (2), a mounting groove (15) is provided at the bottom of the threaded rod (14), a working motor (16) is installed inside the mounting groove (15), a guide rod (13) is provided on one side of the threaded rod (14), a threaded block (11) is connected to the outer wall of the threaded rod (14), a threaded groove (12) is provided inside the threaded block (11), a connecting plate (8) is fixed to one side of the threaded block (11), a sample injection box (9) is installed at the top of the connecting plate (8), and a sample injection needle (7) is connected to the bottom of the sample injection box (9).

2. The sample injection mechanism of a medical mass spectrometer according to claim 1, characterized in that: A threaded connection is formed between the thread groove (12) and the threaded rod (14), and the first reinforcing plate (3) is symmetrically distributed about the vertical center axis of the support frame (2).

3. The sample injection mechanism of a medical mass spectrometer according to claim 1, characterized in that: Baffles (6) are installed at positions close to the bottom ends of both sides of the injection needle (7), a retaining spring is connected between the baffles (6) and the injection needle (7), and the baffles (6) are symmetrically distributed about the vertical center axis of the injection needle (7).

4. The sample injection mechanism of a medical mass spectrometer according to claim 1, characterized in that: Second reinforcing plates (10) are fixed to the top and bottom ends of one side of the connecting plate (8), and the second reinforcing plates (10) are symmetrically distributed about the horizontal center axis of the connecting plate (8).

5. The sample injection mechanism of a medical mass spectrometer according to claim 1, characterized in that: A heat conducting sheet (18) is installed on one side of the working motor (16), a circulation groove (20) is opened on one side of the installation groove (15), and a filter screen (19) is installed on one side inside the circulation groove (20).

6. The sample injection mechanism of a medical mass spectrometer according to claim 1, characterized in that: An observation window (17) is installed at one end of the support frame (2), and an injection port (4) is installed at one side of the top of the mass spectrometer body (5).

7. The sample injection mechanism of a medical mass spectrometer according to claim 6, characterized in that: A mounting frame (25) is installed at the top of the mass spectrometer body (5) at positions on both sides of the injection port (4), and side plates (23) are installed on both sides of the injection port (4). The outer side wall of the mounting frame (25) is connected to a buffer plate (21), and a buffer spring (24) is installed between the buffer plate (21) and the side plate (23). Rubber rings (22) are installed at the top and bottom of the buffer plate (21).

8. The sample injection mechanism of a medical mass spectrometer according to claim 7, characterized in that: The side plates (23) are symmetrically distributed with respect to the vertical center axis of the injection port (4), and the mounting frame (25) is symmetrically distributed with respect to the vertical center axis of the injection port (4).

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