CN214716761U - Disposable sample adding gun head - Google Patents
Disposable sample adding gun head Download PDFInfo
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- CN214716761U CN214716761U CN202121029284.9U CN202121029284U CN214716761U CN 214716761 U CN214716761 U CN 214716761U CN 202121029284 U CN202121029284 U CN 202121029284U CN 214716761 U CN214716761 U CN 214716761U
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Abstract
The utility model discloses a disposable sample adding gun head, which comprises a main body, wherein the main body comprises a sample adding section and a matching section for being hermetically connected with an external sample adding device, a filtering section is arranged between the sample adding section and the matching section, and a filter element for filtering aerosol and separating samples is arranged in the filtering section; from the fitting section to the sample addition section, the diameter of the main body is gradually reduced. Because the storage section in the existing gun head is eliminated, the volume of the disposable sample adding gun head is reduced, so that samples needing to be pipetted are all positioned in the sample adding section, and the sample adding precision is improved; set up the filter core between application of sample section and cooperation section, utilize the filter core to probably produce in the application of sample section and pollute the aerosol and filter absorption and separation sample entering cooperation section, realized the isolation to application of sample section and cooperation section, avoided outside application of sample ware to pollute effectively.
Description
Technical Field
The utility model relates to an external diagnosis technical field, more specifically say, relate to a disposable application of sample rifle head.
Background
The disposable sample adding gun head is connected with an external sample adding device and used for absorbing or adding samples, and the disposable sample adding gun head is widely applied to instruments such as chemiluminescence automation equipment, biochemical detection automation equipment, microorganism automation equipment, nucleic acid automatic extraction equipment and the like in the field of in vitro diagnosis.
The existing sample-adding gun head comprises a sample-adding section at the lower part, a storage section at the middle part and an adapting section at the upper part, wherein the length ratio of the storage section to the sample-adding section in the axial direction is 1: 2. Because the longer storage section is arranged, the volume of the sample adding gun head is large, the sample adding precision is poor, and the small-volume sample adding condition is difficult to deal with; simultaneously, because application of sample section, reserves section and the section direct intercommunication that suits, when having contaminated gas to produce in application of sample section or reserves section, can directly pollute the adapter, and then lead to the pollution of outside application of sample ware.
In summary, how to improve the sample adding precision of the disposable sample adding gun head and avoid the pollution of an external sample adding device is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a disposable application of sample rifle head has cancelled the reserves section and is equipped with the filter core between application of sample section and cooperation section, and the application of sample precision is high and has avoided outside application of sample ware to pollute effectively.
In order to achieve the above object, the present invention provides the following technical solutions:
a disposable sample adding gun head comprises a main body, wherein the main body comprises a sample adding section and a matching section for being hermetically connected with an external sample adding device, a filtering section is arranged between the sample adding section and the matching section, and a filter element for filtering aerosol and blocking a sample is arranged in the filtering section;
the diameter of the main body gradually decreases from the fitting section to the sample application section.
Preferably, the length ratio of the sample application section to the fitting section in the axial direction of the main body is greater than or equal to 5.
Preferably, the filter element comprises several layers of high density glass fibers.
Preferably, the diameter of the sample loading port of the sample loading section is smaller than 1/10 of the diameter of the end face of the matching section.
Preferably, the end face of the matching section is provided with a guide groove.
Preferably, the inner wall surface of the matching section is provided with an annular groove.
Preferably, one end of the filtering section, which is close to the sample adding section, is provided with a filtering conical section.
The disposable sample adding gun head provided by the utility model cancels the storage section in the existing gun head, reduces the volume of the gun head, enables the sample needing to be pipetted to be positioned in the sample adding section, and improves the sample adding precision; set up the filter core between application of sample section and cooperation section, utilize the filter core to probably produce in the application of sample section and pollute the aerosol and filter absorption and separation sample entering cooperation section, realized the isolation to application of sample section and cooperation section, avoided outside application of sample ware to pollute effectively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a specific embodiment of a disposable sample-adding gun head provided by the present invention;
fig. 2 is a schematic cross-sectional view of the disposable loading gun head in fig. 1.
In fig. 1-2:
1 is the application of sample section, 2 is the filter segment, 21 is the filter core, 3 is the cooperation section, 31 is the annular groove, 32 is the guide way.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a disposable application of sample rifle head, cancel the reserves section and be equipped with the filter core between application of sample section and cooperation section, the application of sample precision is high and avoided outside application of sample ware to pollute effectively.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a specific embodiment of a disposable sample adding gun head according to the present invention; fig. 2 is a schematic cross-sectional view of the disposable loading gun head in fig. 1.
The disposable sample adding gun head provided by the embodiment comprises a main body, wherein the main body comprises a sample adding section 1 and a matching section 3 for being hermetically connected with an external sample adding device, a filtering section 2 is arranged between the sample adding section 1 and the matching section 3, and a filter element 21 for filtering aerosol and isolating a sample is arranged in the filtering section 2; from the fitting section 3 to the sample addition section 1, the diameter of the main body is gradually reduced.
The sample adding section 1 is used for sucking and adding a sample, and plays a role in storing the sample during pipetting. Referring to fig. 1 and 2, the sample adding section 1 is configured as a slender conical tube, so as to improve the sample adding precision under the condition that the volume of the disposable sample adding gun head is fixed.
Preferably, the diameter of the sample adding section 1 is smaller than 1/10 of the end face diameter of the matching section 3.
Considering that the diameter of the sample adding section 1 is much smaller than that of the matching section 3, it is preferable that the end of the filtering section 2 close to the sample adding section 1 is provided with a filtering cone section to make the diameter of the main body change gently.
The fitting section 3 is used for connecting with an external sample injector, referring to fig. 1 and 2, the fitting section 3 is a conical pipe, and the specific dimensions such as taper and length of the fitting section 3 are determined according to the dimensions of the external sample injector.
Preferably, in order to facilitate the connection of the mating section 3 with the external applicator, a guide groove 32 is provided on the end face of the mating section 3.
In order to improve the sealing performance of the joint between the matching section 3 and the external sample injector, it is preferable that the inner wall surface of the matching section 3 is provided with an annular groove 31 so that the annular groove 31 is engaged with the annular protrusion on the outer wall surface of the external sample injector.
The cross section of the annular groove 31 can be set to be any geometric shape such as rectangle, semicircle and the like, and the size of the annular groove 31 is determined according to the size of the annular bulge of the external wall surface of the external sample injector matched with the annular groove.
Of course, the annular groove 31 may be replaced by a sealing ring, an annular protrusion engaged with the outer wall surface of the external injector, or the like having similar functions.
A filter element 21 is arranged in the filter section 2 and used for filtering aerosol and blocking a sample so as to prevent the aerosol from polluting an external sample injector through the matching section 3.
The number of layers of the filter element 21 and the material of the filter element 21 determine the filtering capacity of the filter element 21, and preferably, the filter element 21 can comprise a plurality of layers of high-density glass fibers, and the specific number of layers of the high-density glass fibers is determined according to the actual test requirements.
In the embodiment, the disposable sample adding gun head eliminates a storage section in the existing gun head structure, so that the volume of the gun head is reduced, a sample needing to be pipetted is completely positioned in the sample adding section 1, and the sample adding precision is improved; set up filter core 21 between application of sample section 1 and cooperation section 3, utilize filter core 21 to probably produce in application of sample section 1 and pollute the aerosol and filter absorption and separation sample entering cooperation section 3, realized the isolation to application of sample section 1 and cooperation section 3, avoided outside application of sample ware pollution effectively.
Preferably, the length ratio of the sample addition section 1 to the fitting section 3 in the axial direction of the main body is greater than or equal to 5.
In a specific embodiment of the utility model, the disposable sample adding gun head is sequentially provided with a matching section 3, a filtering section 2 for placing the filter element 21 and a sample adding section 1 from big to small, the sample adding section 1 is a slender taper pipe with the length of 60mm and the diameter of a sample adding port of 0.4mm, and the end surface diameter of the matching section 3 is 6 mm; a filtering conical section is arranged between the filtering section 2 and the sample adding section 1, and a step is arranged between the filtering section 2 and the matching section 3.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above that the utility model provides a disposable application of sample rifle head has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (7)
1. A disposable sample adding gun head comprises a main body, wherein the main body comprises a sample adding section (1) and a matching section (3) for being hermetically connected with an external sample adding device, and is characterized in that a filtering section (2) is arranged between the sample adding section (1) and the matching section (3), and a filter element (21) for filtering aerosol and blocking a sample is arranged in the filtering section (2);
the diameter of the main body is gradually reduced from the matching section (3) to the sample adding section (1).
2. A disposable sample application tip according to claim 1, wherein the length ratio of the sample application section (1) to the fitting section (3) in the axial direction of the main body is greater than or equal to 5.
3. A disposable sample application gun head according to claim 1, characterised in that the filter element (21) comprises several layers of high-density glass fibre.
4. A disposable loading tip according to claim 1, wherein the diameter of the loading port of the loading section (1) is smaller than 1/10 of the diameter of the end face of the fitting section (3).
5. A disposable sample application tip according to any one of claims 1 to 4, characterized in that the end face of the fitting section (3) is provided with a guide groove (32).
6. A disposable sample application tip according to claim 5, wherein the inner wall surface of the fitting section (3) is provided with an annular groove (31).
7. A disposable sample application tip according to any one of claims 1 to 4, characterized in that the end of the filter section (2) close to the sample application section (1) is provided with a filter cone section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121029284.9U CN214716761U (en) | 2021-05-13 | 2021-05-13 | Disposable sample adding gun head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121029284.9U CN214716761U (en) | 2021-05-13 | 2021-05-13 | Disposable sample adding gun head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214716761U true CN214716761U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121029284.9U Active CN214716761U (en) | 2021-05-13 | 2021-05-13 | Disposable sample adding gun head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214716761U (en) |
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2021
- 2021-05-13 CN CN202121029284.9U patent/CN214716761U/en active Active
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