A TIP head detection device, a pipette and a sample pre-treatment device

Abstract

The utility model relates to a TIP head detection device, a pipette and a sample pre-processing device. A TIP head detection device includes a photoelectric sensor and a sensor bracket, the sensor bracket is installed on the pipette, the photoelectric sensor is installed obliquely on the sensor bracket, and the photoelectric sensor is used to detect whether the gun tip has pierced the TIP head. The utility model can accurately detect whether the gun tip has pierced the TIP head, effectively avoiding failure to successfully aspirate liquid, and will not affect subsequent operations; in addition, it can accurately detect whether the gun tip has discarded the TIP head, will not repeatedly pierce the TIP head, will not cause cross infection when aspirating liquid, will not affect the accuracy of the test results, and will not collide with the TIP head box, effectively avoiding the occurrence of equipment failure.

Description

Technical Field

[0001] The utility model relates to the technical field of TIP head equipment, in particular to a TIP head detection device, a pipette and a sample pre-processing device. Background Art

[0002] Conventional pneumatic pipettes usually consist of a pipette body and a TIP head (also called a suction tip), wherein the pipette body is provided with a gun tip used in conjunction with the TIP head. When pipetting is required, the Z-axis drive mechanism of the pipette system first drives the pipette body to move, so that the gun tip of the pipette body extends into the interior of the TIP head to complete the TIP head piercing action, and then repeats the piercing action so that the pipette can replace the TIP head and perform subsequent aspiration actions.

[0003] In the actual use of medical equipment, the TIP head is used in large quantities due to safety and singleness. However, the existing pipette has a simple structure and it is impossible to know whether the gun tip has pierced the TIP head. If the gun tip of the pipette body has not pierced the TIP head but continues to work, it will lead to failure to successfully aspirate, seriously affecting subsequent operations; in addition, when the gun tip discards the TIP head, if it is not discarded and the TIP head is repeatedly pierced, on the one hand, the previous TIP head sample will contaminate the subsequent TIP head, causing cross infection when aspirating, seriously affecting the accuracy of the test results, and on the other hand, it will collide with the TIP head box and even cause the entire equipment to malfunction. Therefore, it is particularly important to develop a TIP head detection device for a pipette. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the above-mentioned defects of the prior art and provide a TIP head detection device and a pipette.

[0005] The utility model is realized by the following technical solutions:

[0006] A TIP head detection device comprises a photoelectric sensor and a sensor bracket, wherein the sensor bracket is mounted on a pipette, the photoelectric sensor is obliquely mounted on the sensor bracket, and the photoelectric sensor is used to detect whether a gun tip has pierced the TIP head.

[0007] As an optimization, the angle between the photoelectric sensor and the sensor bracket ranges from 50 to 80 degrees.

[0008] As an optimization, the sensor bracket includes a vertical block, a horizontal block, and a bending block vertically connecting the vertical block and the horizontal block, and the horizontal block is installed on the pipette.

[0009] As an optimization, a circular hole and an arc-shaped long hole for installing the photoelectric sensor are opened at the bottom of the vertical block, and the circular hole and the arc-shaped long hole are arranged opposite to each other.

[0010] As an optimization, a line installation hole is opened at the bottom of the vertical block, and the line installation hole is located between the circular hole and the arc-shaped long hole.

[0011] As an optimization, several binding holes for binding lines are opened on the upper part and the middle of the vertical block.

[0012] As an optimization, long holes are opened on the horizontal blocks.

[0013] As an optimization, three long holes are opened, and the overall distribution is triangular.

[0014] A pipette comprises the above-mentioned TIP head detection device, a lifting gear housing and a gun head connected to the lifting gear housing, wherein a sensor bracket of the TIP head detection device is installed on the lifting gear housing.

[0015] A sample pre-processing device comprises the above-mentioned pipette.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a TIP head detection device, a pipette and a sample pre-processing device. A TIP head detection device includes a photoelectric sensor and a sensor bracket, the sensor bracket is installed on the pipette, the photoelectric sensor is installed obliquely on the sensor bracket, and the photoelectric sensor is used to detect whether the gun tip has pierced the TIP head. The utility model can accurately detect whether the gun tip has pierced the TIP head, effectively avoiding failure to successfully aspirate liquid, and will not affect subsequent operations; in addition, it can accurately detect whether the gun tip has discarded the TIP head, will not repeatedly pierce the TIP head, will not cause cross infection when aspirating liquid, will not affect the accuracy of the test results, and will not collide with the TIP head box, effectively avoiding the occurrence of equipment failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a further description of a TIP head detection device and a pipette in conjunction with the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the main structure of a pipette;

[0020] Figure 2 It is a three-dimensional structural diagram of a pipette;

[0021] Figure 3 It is a schematic diagram of the main structure of a pipette with the TIP head removed;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of a TIP head detection device;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of a TIP head detection device from another angle;

[0024] Figure 6 yes Figure 5 Schematic diagram of the main structure;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of a sensor bracket of a TIP head detection device;

[0026] Figure 8 yes Figure 7 Schematic diagram of the main structure;

[0027] Fig. 9 yes Figure 7 Schematic diagram of the top view structure.

[0028] In the figure: 1 is a photoelectric sensor, 2 is a sensor bracket, 2.1 is a vertical block, 2.1.1 is a circular hole, 2.1.2 is an arc-shaped long hole, 2.1.3 is a binding hole, 2.1.4 is a line installation hole, 2.2 is a bending block, 2.3 is a horizontal block, 2.3.1 is a long hole, 3 is a line, 4 is a lifting gear box, 5 is a gun head, and 6 is a TIP head. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and implementation methods. It is particularly noted that the following implementation methods are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following implementation methods are only some implementation methods of the present application rather than all implementation methods. All other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] The terms "first", "second" and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, and the manner is such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications in the implementation mode of this application (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. The manner, such as a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0031] The terms "install", "connect", "connect", "fix" and the like in this application should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] See also Figure 1-Figure 6 , Figure 1 It is a schematic diagram of the main structure of a pipette; Figure 2 It is a three-dimensional structural diagram of a pipette; Figure 3 It is a schematic diagram of the main structure of a pipette with the TIP head removed; Figure 4 It is a three-dimensional structural schematic diagram of a TIP head detection device; Figure 5 It is a three-dimensional structural schematic diagram of a TIP head detection device from another angle; Figure 6 yes Figure 5 A schematic diagram of the main structure of the invention; a TIP head detection device, comprising a photoelectric sensor 1 and a sensor bracket 2, wherein the sensor bracket 2 is mounted on the pipette, and the photoelectric sensor 1 is obliquely mounted on the sensor bracket 2, and the photoelectric sensor 1 is used to detect whether the gun tip 5 has pierced the TIP head 6. With such a design, by setting the above-mentioned TIP head detection device, it is possible to accurately detect whether the gun tip has pierced the TIP head, effectively avoiding failure to successfully aspirate liquid, and not affecting subsequent operations; in addition, it is possible to accurately detect whether the gun tip has discarded the TIP head, and will not repeatedly pierce the TIP head, and will not cause cross infection during aspiration, will not affect the accuracy of the test results, and will not collide with the TIP head box, effectively avoiding the occurrence of equipment failure.

[0034] See also Figure 5-Figure 6 , Figure 5 It is a three-dimensional structural schematic diagram of a TIP head detection device from another angle; Figure 6 yes Figure 5 The angle between the photoelectric sensor 1 and the sensor bracket 2 is 50-80 degrees. This design increases the radiation area of ​​the detection spot and has a better effect.

[0035] See also Figure 7 , Fig. 9 , Figure 7 It is a three-dimensional structural schematic diagram of a sensor bracket of a TIP head detection device; Fig. 9 yes Figure 7 The schematic diagram of the top view of the structure; the sensor bracket 2 includes a vertical block 2.1 and a horizontal block 2.3 and a bending block 2.2 vertically connecting the vertical block 2.1 and the horizontal block 2.3, and the horizontal block 2.3 is installed on the pipette. Such a design improves the strength, vibration resistance, and anti-shake through the setting of the bending block, and improves the photoelectric effective detection performance.

[0036] See also Figure 7 , Figure 8 , Figure 7 It is a three-dimensional structural schematic diagram of a sensor bracket of a TIP head detection device; Figure 8 yes Figure 7 The front view of the structure is as follows; the bottom of the vertical block 2.1 is provided with a circular hole 2.1.1 and an arc-shaped long hole 2.1.2 for installing the photoelectric sensor 1, and the circular hole 2.1.1 and the arc-shaped long hole 2.1.2 are arranged opposite to each other. Such a design is convenient for processing and installing the photoelectric sensor. In addition, the circular hole and the arc-shaped long hole arranged opposite to each other can ensure that the radius remains unchanged and facilitate the quick adjustment of the position of the photoelectric sensor.

[0037] See also Figure 7 , Figure 8 , Figure 7 It is a three-dimensional structural schematic diagram of a sensor bracket of a TIP head detection device; Figure 8 yes Figure 7 The main structural diagram of the vertical block 2.1 is provided with a circuit installation hole 2.1.4 at the bottom, and the circuit installation hole 2.1.4 is located between the circular hole 2.1.1 and the arc-shaped long hole 2.1.2. Such a design effectively avoids signal interference between the circuit and the metal sheet.

[0038] See also Figure 7 , Figure 8 , Figure 7 It is a three-dimensional structural schematic diagram of a sensor bracket of a TIP head detection device; Figure 8 yes Figure 7 A plurality of binding holes 2.1.3 for binding the lines 3 are provided on the upper and middle parts of the vertical block 2.1. Such a design facilitates fixing the lines, reduces interference, and improves shielding effectiveness.

[0039] See also Figure 7 , Figure 8 , Figure 7 It is a three-dimensional structural schematic diagram of a sensor bracket of a TIP head detection device; Figure 8 yes Figure 7The main structural diagram of the horizontal block 2.3 is provided with a long hole 2.3.1. Such a design facilitates the installation of the TIP head detection device and can be adjusted according to the position of the TIP head.

[0040] See also Figure 7 , Figure 8 , Figure 7 It is a three-dimensional structural schematic diagram of a sensor bracket of a TIP head detection device; Figure 8 yes Figure 7 The main structural diagram is as follows; three long holes 2.3.1 are provided, and the overall distribution is triangular. With this design, the TIP head detection device is installed more firmly.

[0041] See also Figure 1-Figure 3 , Figure 1 It is a schematic diagram of the main structure of a pipette; Figure 2 It is a three-dimensional structural diagram of a pipette; Figure 3 It is a schematic diagram of the main structure of a pipette with the TIP head removed; a pipette, comprising the above-mentioned TIP head detection device, a lifting gear box 4 and a gun head 5 connected to the lifting gear box 4, and the sensor bracket 2 of the TIP head detection device is installed on the lifting gear box 4. With such a design, by setting the above-mentioned TIP head detection device, it is possible to accurately detect whether the gun head has pierced the TIP head, effectively avoiding failure to successfully aspirate liquid, and not affecting subsequent operations; in addition, it is possible to accurately detect whether the gun head has discarded the TIP head, and will not repeatedly pierce the TIP head, which will not cause cross infection during aspiration, will not affect the accuracy of the test results, and will not collide with the TIP head box, effectively avoiding the occurrence of equipment failure.

[0042] A sample pre-treatment device includes the above-mentioned pipette. With such a design, by setting the above-mentioned TIP head detection device, it is possible to accurately detect whether the gun tip has pierced the TIP head, effectively avoiding failure to successfully aspirate liquid, and not affecting subsequent operations; in addition, it is possible to accurately detect whether the gun tip has discarded the TIP head, and the TIP head will not be repeatedly pierced, cross infection will not be caused during aspiration, the accuracy of the test results will not be affected, and the TIP head box will not be collided, effectively avoiding the occurrence of equipment failure.

[0043] Different from the prior art, the present application provides a TIP head detection device, including a photoelectric sensor and a sensor bracket, the sensor bracket is installed on the pipette, the photoelectric sensor is installed on the sensor bracket at an angle, and the photoelectric sensor is used to detect whether the gun tip has pierced the TIP head. The utility model can accurately detect whether the gun tip has pierced the TIP head, effectively avoiding failure to successfully aspirate liquid, and will not affect subsequent operations; in addition, it can accurately detect whether the gun tip has discarded the TIP head, will not repeatedly pierce the TIP head, will not cause cross infection during aspiration, will not affect the accuracy of the test results, and will not collide with the TIP head box, effectively avoiding the occurrence of equipment failure.

[0044] The above description shows the main features, basic principles, and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments or examples, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, the above embodiments or examples should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the technical principle of the utility model shall fall within the scope of patent protection of the utility model.

Claims

1. A TIP head detection device, characterized in that: It comprises a photoelectric sensor and a sensor bracket, wherein the sensor bracket is mounted on the pipette, the photoelectric sensor is obliquely mounted on the sensor bracket, and the photoelectric sensor is used to detect whether the gun tip has pierced the TIP head.

2. A TIP head detection device as claimed in claim 1, characterized in that: The angle between the photoelectric sensor and the sensor bracket ranges from 50 to 80 degrees.

3. A TIP head detection device as claimed in claim 1 or 2, characterized in that: The sensor bracket comprises a vertical block, a horizontal block and a bending block vertically connecting the vertical block and the horizontal block, and the horizontal block is installed on the pipette.

4. A TIP head detection device as claimed in claim 3, characterized in that: A circular hole and an arc-shaped long strip hole for installing the photoelectric sensor are opened at the bottom of the vertical block, and the circular hole and the arc-shaped long strip hole are arranged opposite to each other.

5. A TIP head detection device as claimed in claim 4, characterized in that: A circuit installation hole is formed at the bottom of the vertical block, and the circuit installation hole is located between the circular hole and the arc-shaped long strip hole.

6. A TIP head detection device as claimed in claim 5, characterized in that: A plurality of binding holes for binding lines are provided on the upper part and the middle of the vertical block.

7. A TIP head detection device as claimed in claim 3, characterized in that: The horizontal block is provided with a long hole.

8. A TIP head detection device as claimed in claim 7, characterized in that: The elongated holes are provided with three holes, which are distributed in a triangular shape as a whole.

9. A pipette, characterized in that: It comprises the TIP head detection device according to any one of claims 1 to 8, a lifting gear housing and a gun head connected to the lifting gear housing, wherein the sensor bracket of the TIP head detection device is installed on the lifting gear housing.

10. A sample pre-processing device, characterized in that: Comprising the pipette as claimed in claim 9.

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