Blocking needle microfluid pressure sensor mounting seat and detection module used in IVD equipment

Abstract

The utility model discloses a plugging needle microfluid pressure sensor mounting seat and a detection module used in IVD equipment, belongs to the technical field of medical detection equipment, and aims at detecting whether a sampling needle head is plugged or not and whether the sampling needle head is sucked in an empty mode or not, the mounting seat comprises a seat body, and a sensor mounting cavity is formed in the seat body. A conical cavity is formed in the bottom of the sensor mounting cavity, a liquid inlet channel is formed in the side wall of the seat body and communicated with the conical cavity, the liquid outlet end of the liquid inlet channel is tangent to the inner side wall of the conical cavity, the tangent position is close to the large opening end of the conical cavity, and a liquid outlet channel is formed in the pointed cone end of the conical cavity. The structure is simple, machining is convenient, the manufacturing cost is low, the liquid inlet channel is tangent to the inner side wall of the cone cavity, it is guaranteed that liquid tangentially flows into the cone cavity, fluid dead cavities are prevented from being generated in the cone cavity, and bubbles are prevented from staying in the cone cavity. The detection module is good in detection accuracy, high in precision and capable of accurately detecting micro-flow liquid.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the medical detection equipment technical field, concretely relates to a kind of needle blocking microfluidic pressure sensor mounting seat and detection module for IVD equipment in. BACKGROUND

[0002] In-vitro diagnostic device (IVD) is the product that obtains clinical diagnosis information by detecting human sample (blood, body fluid, tissue, etc.), and then judges disease or body function, but the needle blocking pressure detection module of existing IVD equipment cannot solve the problems of fluid dead space and air bubble generated in the detection process, and when detecting single small sample, it cannot accurately judge whether it is empty suction, which will lead to inaccurate detection results. CONTENT OF UTILITY MODEL

[0003] The utility model embodiment aims to provide a kind of needle blocking microfluidic pressure sensor mounting seat in IVD equipment, its structure is simple, convenient to use, and the production cost is low, and the above-mentioned problems can be better improved.

[0004] Another purpose of the utility model embodiment is to provide a kind of needle blocking microfluidic detection module in IVD equipment, which detects whether sampling needle is blocked and whether it is empty suction, which can minimize the fluid dead space generated by liquid sample in detection cavity and maximize the elimination of air bubble in pressure detection cavity, and can accurately judge the detection of small sample, better guarantee the accuracy of detection results.

[0005] The utility model embodiment is realized as follows:

[0006] The utility model embodiment provides a kind of needle blocking microfluidic pressure sensor mounting seat in IVD equipment, including seat body, sensor installation cavity is equipped on the seat body, the bottom of the sensor installation cavity is equipped with conical cavity, the side wall of the seat body is equipped with liquid inlet channel, the liquid inlet channel is communicated with the conical cavity, the liquid outlet end of the liquid inlet channel is tangent with the inner side wall of the conical cavity and the tangent position is close to the large mouth end of the conical cavity, and the pointed end of the conical cavity is equipped with liquid outlet channel.

[0007] Further, the taper angle of the conical cavity is α, and 0° < α < 180°.

[0008] Further, the taper angle α of the conical cavity is 10°, 20°, 30°, 45°, 60°, 70°, 90°, 120°, 140°, 160° or 170°.

[0009] Further, the included angle formed by the liquid inlet channel and the large mouth end face of the conical cavity is β, and 0° < β < 90°.

[0010] Further, the sensor mounting cavity is a cylindrical cavity.

[0011] Further, the large end diameter of the conical cavity is smaller than the diameter of the sensor mounting cavity.

[0012] Further, the inner wall of the end of the liquid inlet channel away from the conical cavity is provided with a first threaded portion, and the inner wall of the end of the liquid outlet channel away from the conical cavity is provided with a second threaded portion.

[0013] Further, the large end face of the conical cavity is provided with a sealing groove.

[0014] Further, the opening end of the sensor mounting cavity is provided with a pressing plate, the pressing plate is provided with a recess at a position corresponding to the sensor mounting cavity, and the bottom of the recess is provided with a wire hole.

[0015] The embodiment of the utility model further provides a needle blocking microfluid detection module for IVD equipment, including sensor, pressing plate and above-mentioned mounting seat, the sensor sets up in the sensor mounting cavity, the pressing plate sets up in the opening end of the sensor mounting cavity and presses the sensor.

[0016] The utility model discloses the beneficial effect is:

[0017] The utility model discloses the mounting seat of needle blocking microfluid pressure sensor for IVD equipment, its simple structure, convenient processing, the production cost is low, and the liquid inlet channel is tangent with the inner side wall of conical cavity, guarantees that liquid tangentially flows into conical cavity, avoids the fluid dead space in conical cavity, also avoids that bubble stays in conical cavity.

[0018] The detection module provided by the embodiment of the utility model when using, the liquid that needs to be detected flows into conical cavity from the liquid inlet channel of mounting seat, and the liquid flows into conical cavity and is along the tangential flow of the side wall of conical cavity, which can avoid the liquid retention in conical cavity, also can reduce the fluid dead space phenomenon and bubble stay, improve the detection precision. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled person in the art, under the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0020] Figure 1 It is a structure schematic view of one perspective of the mounting seat provided by the embodiment of the utility model.

[0021] Figure 2 Another perspective view of the mounting seat according to the embodiment of the present application is shown in FIG. 4.

[0022] Figure 3 A perspective view of the mounting seat according to the embodiment of the present application is shown in FIG. 3. Figure 2 A sectional view of the mounting seat according to the embodiment of the present application is shown in FIG. 5.

[0023] Figure 4 A sectional view of the mounting seat according to the embodiment of the present application is shown in FIG. 5. Figure 2 A sectional view of the mounting seat according to the embodiment of the present application is shown in FIG. 5.

[0024] Figure 5 An assembly view of the mounting seat and the pressing plate according to the embodiment of the present application is shown in FIG. 6.

[0025] Figure 6 A sectional view of the pressing plate according to the embodiment of the present application is shown in FIG. 7.

[0026] Figure 7 A structural view of the detection module according to the embodiment of the present application is shown in FIG. 8.

[0027] In the figure: 1 - mounting seat; 10 - seat body; 11 - sensor mounting cavity; 12 - conical cavity; 121 - sealing groove; 13 - liquid inlet channel; 131 - first threaded part; 14 - liquid outlet channel; 141 - second threaded part; 2 - pressing plate; 21 - sink; 22 - wire hole; 3 - sensor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the description of the present application, it should be noted that the terms "first", "second", "third" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term "arrange", "install", "link", "connect" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the above-mentioned terms can be understood in the specific meaning of the utility model according to specific circumstances.

[0032] Embodiment 1

[0033] Reference Figures 1-4 As shown in the utility model embodiment one provides a kind of needle blocking microfluid pressure sensor mounting seat 1 for IVD equipment, including seat body 10.

[0034] Seat body 10 is block structure, and seat body 10 is equipped with sensor installation cavity 11, sensor installation cavity 11 is cylindrical cavity, in the embodiment, the diameter of sensor installation cavity 11 is about 19.4mm, and the depth is about 18.5mm, of course, it can also be processed into the cavity of suitable size according to the size of sensor.

[0035] The bottom of sensor installation cavity 11 is equipped with conical cavity 12, and the diameter of the large mouth end of conical cavity 12 is less than the diameter of sensor installation cavity 11, the taper angle of conical cavity 12 is α, and 0 ° < α < 180 °, specifically, α can be designed as 10 °, 20 °, 30 °, 45 °, 60 °, 70 °, 90 °, 120 °, 140 ° or 160 °, 170 ° etc., in the embodiment, α is preferably 70 °.

[0036] The side wall of seat body 10 is equipped with liquid inlet channel 13, and liquid inlet channel 13 is communicated with conical cavity 12, and the liquid outlet end of liquid inlet channel 13 (i.e. the end of liquid inlet channel 13 close to conical cavity 12) is tangent to the inner side wall of conical cavity 12 and the tangent position is close to the large mouth end of conical cavity 12, and the inner wall of the end of liquid inlet channel 13 away from conical cavity 12 is equipped with first threaded part 131, and the pointed end of conical cavity 12 is equipped with liquid outlet channel 14, and the inner wall of the end of liquid outlet channel 14 away from conical cavity 12 is equipped with second threaded part 141. First threaded part 131 and second threaded part 141 facilitate the connection of mounting seat and other components, in the embodiment, liquid inlet channel 13 and liquid outlet channel 14 are communicated with infusion pipeline respectively.

[0037] The included angle formed by the liquid outlet end axis of liquid inlet channel 13 and the end face of the large mouth end of conical cavity 12 is β, and 0 < β < 90 °. In the embodiment, β is preferably 20 °.

[0038] The large end face of the conical cavity 12 is provided with a sealing groove 121 around the periphery, a sealing ring is arranged in the sealing groove 121, and the sensor diaphragm end is sealed with the end face when the sensor is installed, so that the sealing effect is improved.

[0039] Reference Figure 5 and 6 As shown in FIG. 1, the opening end of the sensor mounting cavity 11 is provided with a pressing plate 2, the pressing plate 2 is fixed by screws, the pressing plate 2 is provided with a sunken groove 21 at a position corresponding to the sensor mounting cavity 11, and the bottom of the sunken groove 21 is provided with a wire hole 22 penetrating through the pressing plate 2.

[0040] Example 2

[0041] Reference Figure 7 As shown in FIG. 1, the opening end of the sensor mounting cavity 11 is provided with a pressing plate 2, the pressing plate 2 is fixed by screws, the pressing plate 2 is provided with a sunken groove 21 at a position corresponding to the sensor mounting cavity 11, and the bottom of the sunken groove 21 is provided with a wire hole 22 penetrating through the pressing plate 2.

[0042] It should be noted that the pressing plate 2 and the mounting seat 1 in this embodiment adopt the pressing plate 2 and the mounting seat 1 in Example 1, the structure, working principle and technical effects generated are referred to the corresponding contents in Example 1, and details are not described herein.

[0043] The sensor is arranged in the sensor mounting cavity 11, the pressing plate 2 is arranged at the opening end of the sensor mounting cavity 11 and presses the sensor 3, and the signal line of the sensor 3 penetrates out of the wire hole 22 on the pressing plate 2.

[0044] When the detection module is used, the liquid to be detected flows into the conical cavity 12 from the liquid inlet channel 13 of the mounting seat 1, and the liquid flows into the conical cavity 12 along the tangent of the side wall of the conical cavity 12, so that the liquid in the conical cavity 12 can be avoided to be retained, the fluid dead space phenomenon and bubble retention are eliminated, and the detection precision is improved.

[0045] The utility model is not limited to the above optional implementation, anyone can draw other various forms of products under the enlightenment of the utility model, but no matter make any change in shape or structure, any technical scheme falling into the scope defined by the utility model claims falls into the protection scope of the utility model.

Claims

1. A mounting base for a needle-plugging microfluidic pressure sensor in an IVD device, characterized in that: The device includes a base, on which a sensor mounting cavity is provided. The bottom of the sensor mounting cavity is provided with a conical cavity. A liquid inlet channel is provided on the side wall of the base, which communicates with the conical cavity. The liquid outlet end of the liquid inlet channel is tangent to the inner side wall of the conical cavity, and the tangent part is close to the large opening end of the conical cavity. The pointed end of the conical cavity is provided with a liquid outlet channel.

2. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 1, characterized in that: The cone angle of the conical cavity is α, where 0° < α < 180°.

3. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 2, characterized in that: The cone angle α of the conical cavity is 10°, 20°, 30°, 45°, 60°, 70°, 90°, 120°, 140°, 160° or 170°.

4. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 1, characterized in that: The angle between the liquid inlet channel and the large end face of the conical cavity is β, where 0° < β < 90°.

5. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 1, characterized in that: The sensor mounting cavity is a cylindrical cavity.

6. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 5, characterized in that: The diameter of the larger end of the conical cavity is smaller than the diameter of the sensor mounting cavity.

7. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 1, characterized in that: The inner wall of the liquid inlet channel at the end away from the conical cavity is provided with a first threaded portion, and the inner wall of the liquid outlet channel at the end away from the conical cavity is provided with a second threaded portion.

8. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 1, characterized in that: The large end face of the conical cavity is surrounded by a sealing groove.

9. The mounting base for a needle-plugging microfluidic pressure sensor in an IVD device according to claim 1, characterized in that: The sensor mounting cavity has a pressure plate at its open end, and the pressure plate has a groove at a position corresponding to the sensor mounting cavity. The bottom of the groove has a wire passage hole.

10. A microfluidic detection module for needle blockage in IVD equipment, characterized in that: The device includes a sensor, a pressure plate, and a mounting base as described in any one of claims 1-9, wherein the sensor is disposed within the sensor mounting cavity, and the pressure plate is disposed at the open end of the sensor mounting cavity and presses down on the sensor.

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