CN217787121U - Sample injection needle assembly and medical equipment - Google Patents

Abstract

The application discloses application sample injection needle subassembly and medical equipment. The sample feeding needle component comprises a guide rail component and a sample feeding needle component, wherein the sample feeding needle component comprises a fixed block, a positioning mechanism and a sample feeding needle, and the fixed block is fixedly arranged on the guide rail component and driven by the guide rail component to move; positioning mechanism includes position sleeve, fixed lid, stopper and elastic element, position sleeve fixed connection in the fixed block, fixed lid is located the position sleeve and with the position sleeve encloses and establishes the formation installation cavity, the application of sample needle wears to locate the position sleeve fixed lid and the installation cavity, the stopper at least part is located in the installation cavity, just stopper fixed connection in on the application of sample needle, elastic element's both ends support respectively to push against in the stopper with fixed lid. The application can solve the problem that a sample adding needle in a sample adding needle assembly in the prior art is easy to damage.

Description

Sample injection needle assembly and medical equipment

Technical Field

The application relates to the technical field of medical equipment, in particular to a sample adding needle assembly and medical equipment.

Background

Currently, some medical devices, such as blood coagulation analyzers and biochemical detectors, usually utilize a sample injection needle assembly to suck and inject reagents and diluents. This application of sample needle subassembly includes guide rail part and application of sample needle part, and the during operation, application of sample needle part moves along guide rail part, can absorb and the application of sample to reagent and diluent etc..

However, in the process of sucking a reagent, a sample and the like by a sample adding needle on the current sample adding needle component, once the sample adding needle collides with a container for containing the reagent, the sample and the like, the sample adding needle is easily damaged, and the service life of the sample adding needle component is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The application mainly aims to provide a sample injection needle assembly and medical equipment to solve the problem that a sample injection needle of the sample injection needle assembly in the prior art is easy to damage.

According to an aspect of an embodiment of the present application, there is provided a sample injection needle assembly including:

a guide rail member; and

the sample adding needle component comprises a fixed block, a positioning mechanism and a sample adding needle, wherein,

the fixed block is fixedly arranged on the guide rail component and driven by the guide rail component to move;

positioning mechanism includes position sleeve, fixed lid, stopper and elastic element, position sleeve fixed connection in the fixed block, fixed lid is located the position sleeve and with the position sleeve encloses and establishes the formation installation cavity, the application of sample needle wears to locate the position sleeve fixed lid and the installation cavity, the stopper at least part is located in the installation cavity, just stopper fixed connection in on the application of sample needle, elastic element's both ends support respectively to push against in the stopper with fixed lid.

Furthermore, the positioning mechanism further comprises a guide block, the guide block is slidably sleeved on the sample adding needle, the guide block is located on one side, close to the fixed cover, of the limiting block, a positioning convex column is arranged on the guide block, and the elastic element abuts against the limiting block through the guide block and is sleeved on the positioning convex column.

Further, the sampling needle assembly further comprises a detection component, and the detection component is used for detecting whether the sampling needle collides with a preset structure.

Furthermore, the detection component comprises a circuit board and a detection block, the circuit board is arranged on the fixed block, a photoelectric switch is arranged on the circuit board, and the detection block is fixedly connected to the sampling needle and matched with the photoelectric switch to detect whether the sampling needle collides with the preset structure.

Further, be provided with on the lateral wall of position sleeve and dodge the hole, the fixed block is followed it wears out to dodge the hole, just the fixed block with detect integrative the setting of piece.

Furthermore, a fixing clamp is arranged on the fixing block, and the fixing block is fixedly connected to the sample adding needle through the fixing clamp.

Furthermore, the fixing clamp comprises a first clamping block and a second clamping block, the first end of the first clamping block is connected with the first end of the second clamping block, the first clamping block and the second clamping block are arranged in an enclosing mode to form a clamping groove, and the first clamping block and the second clamping block are locked through a locking piece.

Further, the sampling needle assembly also comprises a liquid level detection element.

Further, the fixed block is a PI fixed block.

On the other hand, the application also provides medical equipment which comprises the sample injection needle assembly, wherein the sample injection needle assembly is the sample injection needle assembly.

Compared with the prior art, the technical scheme of the application at least has the following technical effects:

when application of sample needle part moved down along guide rail part, in case when application of sample needle touched the wall of the container that is used for holding reagent or sample, the application of sample needle received elastic element's effect, can follow the direction of height of installation cavity and produce certain buffer stroke, so, can effectively avoid application of sample needle and container to bump and damaged, and then can improve the utility model provides a life of application of sample needle subassembly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a medical device disclosed in an embodiment of the present application;

FIG. 2 is a schematic structural view of a loading needle assembly disclosed in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a loading needle component disclosed in an embodiment of the present application;

FIG. 4 is a front view of a loading needle assembly disclosed in an embodiment of the present application;

FIG. 5 is a cross-sectional view taken at C-C of FIG. 4;

fig. 6 is a schematic structural diagram of the limiting block disclosed in this embodiment when the limiting block is connected to the sample-adding needle.

Wherein the figures include the following reference numerals:

100. a sample injection needle assembly; 10. a guide rail member; 11. a first guide rail mechanism; 12. a second guide rail mechanism; 20. a loading needle member; 21. a fixed block; 211. mounting holes; 22. a positioning mechanism; 221. a positioning sleeve; 2211. avoiding holes; 222. a fixed cover; 223. a limiting block; 2231. a fixing clip; 2231a, a first clamp block; 2231b, a second clamp block; 224. an elastic element; 225. a guide block; 2251. positioning the convex column; 2201. a mounting cavity; 23. a sample adding needle; 30. a detection section; 31. a circuit board; 311. a photoelectric switch; 32. detecting a block; 40. a drag chain; 50. a connecting plate; 60. carrying out top thread; 200. a medical device; 201. a container; 202. a reagent module; 203. and a detection module.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

Referring to fig. 1, according to an embodiment of the present application, a medical device 200 is provided, and the medical device 200 may be, inter alia, a coagulation analyzer, a biochemical detector, or a luminescence immunoassay detector.

Specifically, the medical device 200 in this embodiment is provided with a reagent module 202, a detection module 203, a sample injection needle assembly 100, and the like, wherein the reagent module 202 is provided with a container for containing a reagent or a sample to be detected, and the sample injection needle assembly 100 moves between the detection module 203 and the reagent module 202 to suck and inject the reagent or the sample.

Referring to fig. 2 to 5, the needle loading assembly 100 includes a guide member 10 and a needle loading member 20.

Specifically, the rail member 10 in the present embodiment includes a first rail mechanism 11 and a second rail mechanism 12, the first rail mechanism 11 and the second rail mechanism 12 are perpendicular to each other, and the second rail mechanism 12 is slidable along the first rail mechanism 11. Specifically, the first guide rail mechanism 11 and the second guide rail mechanism 12 may be a slide rail, a slider, a belt pulley, a screw rod, or the like, which can drive the sampling needle component 20 to move in a vertical plane. As shown in fig. 1, in a specific embodiment of the present application, each of the first guide rail mechanism 11 and the second guide rail mechanism 12 includes a slide rail, a slider, and a pulley mechanism, wherein the slider is slidably disposed on the slide rail, and the pulley mechanism is connected to the slider.

The sample adding needle component 20 comprises a fixed block 21, a positioning mechanism 22 and a sample adding needle 23, wherein the fixed block 21 is fixedly arranged on the guide rail component 10 and moves under the driving of the guide rail component 10, specifically moves between the reagent module 202 and the detection module 203; the positioning mechanism 22 includes a positioning sleeve 221, a fixing cover 222, a limiting block 223 and an elastic element 224, the positioning sleeve 221 is fixedly connected to the fixing block 21, the fixing cover 222 covers the positioning sleeve 221 and encloses with the positioning sleeve 221 to form an installation cavity 2201, the sample adding needle 23 penetrates through the positioning sleeve 221, the fixing cover 222 and the installation cavity 2201, the limiting block 223 is at least partially located in the installation cavity 2201, the limiting block 223 is fixedly connected to the sample adding needle 23, and two ends of the elastic element 224 respectively abut against the limiting block 223 and the fixing cover 222. In actual mounting, the probe member 20 is connected to the second guide mechanism 12 via the connecting plate 50, the drag chain 40 is provided in the probe assembly 100, and a tube or the like for adding a diluent is connected to the tip of the probe 23, and the tube is positioned inside the drag chain 40.

When the rail member 10 is installed in the medical apparatus, the first rail mechanism 11 is parallel to the horizontal plane, and correspondingly the second rail mechanism 12 is perpendicular to the horizontal plane, and when in operation, the sampling needle member 20 can move in the vertical plane to suck and fill the reagent or sample.

When the sampling needle component 20 moves downward along the guide rail component 10, once the sampling needle 23 touches the wall of the container 201 for containing the reagent or the sample, the sampling needle 23 is under the action of the elastic element 224, and can generate a certain buffer stroke along the height direction of the mounting cavity 2201, so that the sampling needle 23 can be effectively prevented from colliding with the container 201 and being damaged, and the service life of the sampling needle component 100 in this embodiment can be further prolonged.

Referring to fig. 2 to 5, in order to mount and support the sampling needle member 20, the fixing block 21 in this embodiment is provided with a mounting portion, which may be, for example, a mounting hole 211, and when actually assembling, the positioning sleeve 221 is fixedly mounted in the mounting hole 211, and specifically, the positioning sleeve 221 may be fixed in the mounting hole 211 by a jackscrew 60. The fixed cover 222 and the positioning sleeve 221 may be connected by a screw thread, or may be connected by a pin, a buckle, or other structures.

Optionally, the elastic element 224 in this embodiment may be a spring, and may also be an elastic rubber sleeve or an elastic silicone sleeve.

Further, the positioning mechanism 22 in this embodiment further includes a guide block 225, the guide block 225 is slidably sleeved on the sampling needle 23, the guide block 225 is located at one side of the limiting block 223 close to the fixing cover 222, the guide block 225 is provided with a positioning protrusion 2251, and the elastic element 224 abuts against the limiting block 223 through the guide block 225 and is sleeved on the positioning protrusion 2251. Through the function of the guide block 225, not only can the installation stability of the elastic element 224 be improved, but also a certain protection effect can be exerted on the limit block 223, and the limit block 223 is prevented from being abraded by the elastic element 224. Of course, in other embodiments of the present application, the guide block 225 may not be provided, and any other modifications based on the concept of the present application are within the scope of the present application.

Referring to fig. 2 to 5, the needle assembly 100 of the present embodiment further includes a detection component 30, and the detection component 30 is used for detecting whether the needle 23 collides with a predetermined structure. It should be noted that the predetermined structure in the present embodiment may be, for example, a container 201 for containing a reagent or a sample, and the collision in the present application refers to a collision with the container 201 in particular when the medical device moves in the height direction. When the sample addition needle 23 collides with the container 201, the sample addition needle 23 is displaced relative to the detection member 30 to a certain extent, and at this time, whether the sample addition needle 23 collides with the container 201 or not can be detected by the detection function of the detection member 30. Whether the sample adding needle 23 collides with the container 201 is detected through the detection component 30, which is more convenient for performing automatic control on the sample adding needle assembly 100, for example, when the detection component 30 detects that the sample adding needle 23 collides with the container, the signal can be fed back to a controller of the medical equipment, and the controller can control the guide rail component 10 according to the signal, so that the sample adding needle 23 is separated from the inner wall of the container 201.

In some embodiments, the detecting member 30 includes a circuit board 31 and a detecting block 32, wherein the circuit board 31 is disposed on the fixing block 21, the photoelectric switch 311 is disposed on the circuit board 31, and the detecting block 32 is fixedly connected to the sample injection needle 23 and matches with the photoelectric switch 311 to detect whether the sample injection needle 23 collides with the container 201. When the application of sample needle 23 collides with the container 201, the application of sample needle 23 can be followed the height and deviated, and at this moment, the detection block 32 that sets up on application of sample needle 23 can trigger photoelectric switch 311 in order to transmit the signal to circuit board 31, and then feeds back the signal transmission that application of sample needle 23 collided to controller etc. If the sampling needle 23 does not collide with the container 201 and other structures, the detection block 32 is far away from the photoelectric switch 311, and at this time, the photoelectric switch 311 does not send any signal, so that the structure is simple and convenient to implement.

Of course, in other embodiments of the present application, the detecting member 30 may be configured as a proximity switch, a displacement sensor, or the like, and any other modifications within the spirit of the present application are within the scope of the present application.

The detection block 32 and the sampling needle 23 in the embodiment are conductive structures, and during actual installation, the detection block 32 is electrically connected with the circuit board 31 through a signal shielding wire and the like, so that the detection precision is high, and the stability is good.

Further, in this embodiment, the sidewall of the positioning sleeve 221 is provided with an avoiding hole 2211, when the positioning sleeve is installed, the fixing block 21 penetrates through the avoiding hole 2211 from the avoiding hole 2211, and the fixing block 21 and the detecting block 32 are integrally provided, so that the structure of the entire needle feeding assembly 100 can be simplified, and the structural stability of the fixing block 21 and the detecting block 32 can be improved.

Referring to fig. 2 to 6, in this embodiment, a fixing clip 2231 is disposed on the fixing block 21, and the fixing block 21 is fixedly connected to the sample adding needle 23 through the fixing clip 2231. Specifically, the fixing clip 2231 includes a first clamping block 2231a and a second clamping block 2231b, a first end of the first clamping block 2231a is connected to a first end of the second clamping block 2231b, and the first clamping block 2231a and the second clamping block 2231b are surrounded to form a clamping groove, when actually installing, the sample feeding needle 23 is clamped in the clamping groove between the first clamping block 2231a and the second clamping block 2231b, and the first clamping block 2231a and the second clamping block 2231b are locked by a locking member (not shown in the figure), which may be, for example, a locking screw, a pin, or the like, and by the action of the locking member, the first clamping block 2231a and the second clamping block 2231b are conveniently locked and fixed together, so that the limiting block 223 can be fixedly connected to the sample feeding needle 23, which is simple in structure and convenient for disassembly and assembly.

Further, the needle feeding assembly 100 of the present embodiment further includes a liquid level detecting element (not shown), which is used to detect the liquid level of the container 201. Specifically, the liquid level detecting element in this embodiment may be, for example, a capacitive sensor, which is electrically connected to the limiting block 223 through a signal shielding line, at this time, the limiting block 223 and the sample adding needle 23 are both made of a conductive material, and the conductive material may be, for example, steel, copper, or other structures. The controller on the medical device 200 receives the signal output by the capacitance sensor, and the output signal is judged and identified through a software algorithm, so that the function of detecting the liquid level is realized. Specifically, the terminal of the sampling needle 23 in this embodiment is distributed with the above-mentioned capacitance sensor, and when the sampling needle 23 is inserted into the liquid in the container 201, and the capacitance sensor changes, the capacitance sensor is detected and analyzed through the change of the capacitance sensor, so as to achieve the function of detecting the liquid level.

Further, the fixed block 21 in this embodiment is a PI fixed block, and PI is Polyimide (Polyimide), which is one of organic polymer materials with the best overall performance. The fixed block 21 is a PI fixed block, and has excellent heat resistance, excellent mechanical properties, good chemical stability and moist heat resistance, good radiation resistance, good dielectric properties, and the like, and has a small influence on the transmission of the electric signal of the sample addition pin 23, and can extract the liquid level detection with high accuracy.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A needle assembly (100) comprising:

a rail member (10); and

a sample adding needle component (20), wherein the sample adding needle component (20) comprises a fixed block (21), a positioning mechanism (22) and a sample adding needle (23),

the fixing block (21) is fixedly arranged on the guide rail component (10) and driven by the guide rail component (10) to move;

positioning mechanism (22) include position sleeve (221), fixed lid (222), stopper (223) and elastic element (224), position sleeve (221) fixed connection in fixed block (21), fixed lid (222) lid is located position sleeve (221) and with position sleeve (221) enclose to establish and form installation cavity (2201), application of sample needle (23) wear to locate position sleeve (221), fixed lid (222) and installation cavity (2201), stopper (223) at least part is located in installation cavity (2201), just stopper (223) fixed connection in application of sample needle (23) is last, the both ends of elastic element (224) respectively support to locate in stopper (223) with fixed lid (222).

2. The needle assembly (100) of claim 1, wherein the positioning mechanism (22) further comprises a guide block (225), the guide block (225) is slidably sleeved on the needle (23), the guide block (225) is located on a side of the limiting block (223) close to the fixing cover (222), a positioning boss (2251) is disposed on the guide block (225), and the elastic element (224) abuts against the limiting block (223) through the guide block (225) and is sleeved on the positioning boss (2251).

3. The needle loading assembly (100) according to claim 1, wherein the needle loading assembly (100) further comprises a detection member (30), and the detection member (30) is used for detecting whether the needle loading (23) collides with a predetermined structure.

4. The needle assembly (100) of claim 3, wherein the detecting member (30) comprises a circuit board (31) and a detecting block (32), the circuit board (31) is disposed on the fixing block (21), a photoelectric switch (311) is disposed on the circuit board (31), and the detecting block (32) is fixedly connected to the needle (23) and is matched with the photoelectric switch (311) to detect whether the needle (23) collides with the predetermined structure.

5. The needle assembly (100) according to claim 4, wherein an avoiding hole (2211) is disposed on the sidewall of the positioning sleeve (221), the fixing block (21) passes through the avoiding hole (2211) from the avoiding hole (2211), and the fixing block (21) and the detecting block (32) are integrally disposed.

6. The needle loading assembly (100) according to any one of claims 1 to 5, wherein a fixing clip (2231) is disposed on the fixing block (21), and the fixing block (21) is fixedly connected to the needle loading (23) by the fixing clip (2231).

7. The needle feeding assembly (100) of claim 6, wherein the fixing clip (2231) comprises a first clip block (2231 a) and a second clip block (2231 b), a first end of the first clip block (2231 a) is connected with a first end of the second clip block (2231 b), the first clip block (2231 a) and the second clip block (2231 b) enclose a clip groove, and the first clip block (2231 a) and the second clip block (2231 b) are locked by a locking member.

8. The needle assembly (100) of any of claims 1 to 5, wherein the needle assembly (100) further comprises a liquid level detection element.

9. The needle assembly (100) according to any one of claims 1 to 5, wherein the immobilization block (21) is a PI immobilization block.

10. A medical device (200) comprising a needle assembly (100), wherein the needle assembly (100) is the needle assembly (100) of any one of claims 1 to 9.

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