CN203275132U - Sampling needle of blood analyzer - Google Patents
Sampling needle of blood analyzer Download PDFInfo
- Publication number
- CN203275132U CN203275132U CN 201320315659 CN201320315659U CN203275132U CN 203275132 U CN203275132 U CN 203275132U CN 201320315659 CN201320315659 CN 201320315659 CN 201320315659 U CN201320315659 U CN 201320315659U CN 203275132 U CN203275132 U CN 203275132U
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- sampling
- atmosphere
- needle
- conduction pipe
- tube
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a sampling needle of a blood analyzer. The sampling needle comprises an injection syringe, a needle seat and a sampling syringe needle, wherein the sampling syringe needle is connected with the injection syringe through the needle seat and comprises a sampling tube and an air conduction tube which are coaxially arranged, an annular gap between the inner wall of the sampling tube and the outer wall of the air conduction tube is an air flow channel, an axial channel of the sampling tube is a sampling channel, an air inlet and an air outlet are formed in the wall of the sampling tube, one end, close to the needle seat, of the sampling syringe needle is a connecting end, the other end, away from the needle seat, of the sampling syringe needle is a penetrating sampling end, the air inlet is close to the connecting end, the air outlet is close to the penetrating sampling end, an annular clapboard is arranged in the air flow channel between the air inlet and the air outlet, an air vent is formed in the annular clapboard, and filtering absorbent cotton is placed on the annular clapboard. When blood is extracted, the sampling needle is not affected by the negative pressure in a vacuum blood sampling tube, and can be used for precisely controlling the extraction amount of the blood so as to ensure that sample testing results are accurate and reliable.
Description
Technical field
The utility model relates to medical instruments field, particularly a kind of blood analyser sampling probe.
Background technology
Blood need to be taken out from vacuum test tube and join when in the prior art, carrying out blood analysis and carry out analyzing and testing in blood analyser.Due to the pressure in vacuum test tube less than atmospheric pressure, compare and extract blood from open-top receptacle, can not accurately control the amount that extracts blood when utilizing sampling probe to extract blood from vacuum test tube, when especially needing parallel equivalent extraction blood to carry out blood analysis, the difference of sampling amount can affect the test sample result.
The utility model content
In view of this, the utility model is to provide the blood analyser sampling probe that is not subjected to the interior negative pressure of vacuum test tube to affect, can accurately control the blood draw amount.
for addressing the above problem, the utility model provides a kind of blood analyser sampling probe, comprise syringe, needle stand and sampling syringe needle, described sampling syringe needle is connected with syringe by described needle stand, described sampling syringe needle comprises stopple coupon and atmosphere conduction pipe, described stopple coupon and the coaxial setting of described atmosphere conduction pipe, annular space between described stopple coupon inwall and described atmosphere conduction pipe outer wall is gas channel, the axial passage of described stopple coupon is the sampling passage, offer the outlet of atmospheric connection and atmosphere on the wall of described stopple coupon, the outlet of described atmospheric connection and described atmosphere respectively with described gas channel fluid communication, the end that described sampling syringe needle closes on described needle stand is link, described sampling syringe needle is held for thrusting sampling away from an end of described needle stand, described atmospheric connection closes on described link, described atmosphere outlet closes on the described sampling end that thrusts, be provided with toroidal membrane in gas channel between described atmospheric connection and the outlet of described atmosphere, offer air hole on described toroidal membrane, and be placed with filtration absorbent cotton on described toroidal membrane.
Above-mentioned blood analyser sampling probe, described atmosphere outlet is to the diminishing toroidal of described atmosphere conduction pipe inwall from described atmosphere conduction pipe outer wall.
Above-mentioned blood analyser sampling probe, described gas channel close on a described end sealing of thrusting the sampling end.
Above-mentioned blood analyser sampling probe, described gas channel close on a described end opening that thrusts the sampling end; At the described sampling end place of thrusting: the distance between described atmosphere conduction pipe inwall and described stopple coupon outer wall is less than 0.1 millimeter; Described atmosphere conduction pipe is comprised of stainless-steel tube and rubber tube, described stainless-steel tube is connected with described needle stand by described rubber tube, described atmospheric connection and the outlet of described atmosphere all are positioned on described stainless-steel tube, and described toroidal membrane surrounding is fixedly connected with described atmosphere conduction pipe inwall.
The utility model has been obtained following beneficial effect: make vacuum test tube and atmosphere conducting by gas channel, make the gaseous tension in vacuum test tube equal atmospheric pressure, thereby making to use not affected by the interior negative pressure of vacuum test tube, can accurately control the blood draw amount, guarantee that the test sample result accurately, reliably.
Description of drawings
Fig. 1 is the structural representation of the utility model blood analyser sampling probe;
Fig. 2 is the inner structure schematic diagram of the sampling syringe needle of the utility model blood analyser sampling probe shown in Figure 1;
Fig. 3 is the A section structure for amplifying schematic diagram of sampling syringe needle shown in Figure 2;
Fig. 4 is the B section structure for amplifying schematic diagram of sampling syringe needle shown in Figure 2;
Fig. 5 is the another kind of inner structure schematic diagram of the sampling syringe needle of the utility model blood analyser sampling probe.
In figure: 1-syringe, 2-needle stand, the 3-syringe needle of taking a sample, the 31-stopple coupon, 32-atmosphere conduction pipe, 33-gas channel, the 34-passage of taking a sample, 35-atmospheric connection, the outlet of 36-atmosphere, 37-link, 38-thrust sampling end, 39-toroidal membrane, the 310-air hole, 311-filters absorbent cotton, 321-stainless-steel tube, 322-rubber tube.
Embodiment
For clearly demonstrating the scheme in the utility model, the below provides preferred embodiment and is described with reference to the accompanying drawings.
as shown in Figures 1 to 4, the present embodiment blood analyser sampling probe, comprise syringe 1, needle stand 2 and sampling syringe needle 3, described sampling syringe needle 3 is connected with syringe 1 by described needle stand 2, described sampling syringe needle 3 comprises stopple coupon 31 and atmosphere conduction pipe 32, described stopple coupon 31 and the coaxial setting of described atmosphere conduction pipe 32, annular space between described stopple coupon 31 inwalls and described atmosphere conduction pipe 32 outer walls is gas channel 33, the axial passage of described stopple coupon 31 is sampling passage 34, offer atmospheric connection 35 and atmosphere outlet 36 on the wall of described stopple coupon 31, described atmospheric connection 35 and described atmosphere outlet 36 respectively with described gas channel 33 fluid communication, the end that described sampling syringe needle 3 closes on described needle stand 2 is link 37, described sampling syringe needle 3 holds 38 away from an end of described needle stand 2 for thrusting sampling, described atmospheric connection 351 closes on described link 37, described atmosphere outlet 36 closes on the described sampling end 38 that thrusts, be provided with toroidal membrane 39 in gas channel 33 between described atmospheric connection 35 and described atmosphere outlet 36, offer air hole 310 on described toroidal membrane 39, and be placed with on described toroidal membrane 39 and filter absorbent cotton 311.Described filtration absorbent cotton 311 can play a role in filtering to the air that enters in vacuum test tube, prevents that airborne impurity from entering in vacuum test tube and the contaminated blood sample.
As shown in Figure 3, described atmosphere outlet 36 is to the described atmosphere conduction pipe 32 diminishing toroidals of inwall from described atmosphere conduction pipe 32 outer walls; When can guarantee that so described atmosphere conduction pipe 32 thrusts the rubber plug of vacuum test tube, the edge of described atmosphere outlet 36 can not carry the rubber plug chip and enter in vacuum test tube, avoids polluting the blood in vacuum test tube.
As shown in Figure 4, described gas channel 33 closes on a described end opening that thrusts sampling end 38, and namely described gas channel 33 integral body extend to and thrust sampling end 38; At described sampling end 38 places of thrusting: the distance between described atmosphere conduction pipe 32 inwalls and described stopple coupon 31 outer walls is less than 0.1 millimeter; Described atmosphere conduction pipe 32 is comprised of stainless-steel tube 321 and rubber tube 322, described stainless-steel tube 321 is connected with described needle stand 2 by described rubber tube 322, described atmospheric connection 35 and described atmosphere outlet 36 all are positioned on described stainless-steel tube 321, and described toroidal membrane 39 surroundings are fixedly connected with described atmosphere conduction pipe 32 inwalls.
the present embodiment blood analyser sampling probe when in use, at first described sampling syringe needle 3 is thrust in the rubber plug of vacuum test tube, this moment, described atmosphere conduction pipe 32 can not thrust in the rubber plug of vacuum test tube together, described stainless-steel tube 321 upwards pushes described rubber tube 322, until described stopple coupon 31 lower ends extend in blood in vacuum test tube the time, downwards promote described stainless-steel tube 321 and make the hole that described stopple coupon 31 thorns of lower end edge of described stainless-steel tube 321 are opened enter in vacuum test tube, because extending to, described gas channel 33 integral body thrust sampling end 38, the vacuum blood collection tube interior gas is by described gas channel 33 and ambient atmosphere conducting like this.When making the lower end of described stainless-steel tube 321 enter into blood in vacuum test tube if overexert, the vacuum blood collection tube interior gas still can be by gas circuit and the ambient atmosphere conducting of described atmosphere outlet 36, described gas channel 33 and 35 formation of described atmospheric connection.Distance between described atmosphere conduction pipe 32 inwalls and described stopple coupon 31 outer walls is less than 0.1 millimeter, can guarantee that like this hole that described stopple coupon 31 thorns of the lower end edge of described stainless-steel tube 321 are opened enters in vacuum test tube, enters in vacuum test tube and can and not carry the rubber plug chip with the impurity on the rubber plug of vacuum test tube.
As shown in Figure 5, the difference of the present embodiment and embodiment 1 is that described gas channel 33 closes on a described end sealing of thrusting sampling end 38, and described atmosphere conduction pipe 32 is a whole stainless-steel tube; When thrusting the rubber plug of vacuum test tube, described stopple coupon 31 thrusts together with described atmosphere conduction pipe 32.Gas circuit and ambient atmosphere conducting that the vacuum blood collection tube interior gas forms by described atmosphere outlet 36, described gas channel 33 and described atmospheric connection 35.
Above-described embodiment is only for illustrating that clearly the utility model creates example, and is not the utility model to be created the restriction of embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.All any apparent variation or changes being extended out within spirit of the present utility model and principle still are among the protection domain of the utility model creation claim.
Claims (4)
1. blood analyser sampling probe, comprise syringe (1), needle stand (2) and sampling syringe needle (3), described sampling syringe needle (3) is connected with syringe (1) by described needle stand (2), it is characterized in that, described sampling syringe needle (3) comprises stopple coupon (31) and atmosphere conduction pipe (32), described stopple coupon (31) and the coaxial setting of described atmosphere conduction pipe (32), annular space between described stopple coupon (31) inwall and described atmosphere conduction pipe (32) outer wall is gas channel (33), the axial passage of described stopple coupon (31) is sampling passage (34), offer atmospheric connection (35) and atmosphere outlet (36) on the wall of described stopple coupon (31), described atmospheric connection (35) and described atmosphere outlet (36) respectively with described gas channel (33) fluid communication, the end that described sampling syringe needle (3) closes on described needle stand (2) is link (37), described sampling syringe needle (3) is held (38) away from an end of described needle stand (2) for thrusting sampling, described atmospheric connection (35) closes on described link (37), described atmosphere outlet (36) closes on the described sampling end (38) that thrusts, be provided with toroidal membrane (39) in gas channel (33) between described atmospheric connection (35) and described atmosphere outlet (36), offer air hole (310) on described toroidal membrane (39), and be placed with on described toroidal membrane (39) and filter absorbent cotton (311).
2. blood analyser sampling probe according to claim 1, is characterized in that, described atmosphere outlet (36) is to the diminishing toroidal of described atmosphere conduction pipe (32) inwall from described atmosphere conduction pipe (32) outer wall.
3. blood analyser sampling probe according to claim 2, is characterized in that, described gas channel (33) closes on a described end sealing of thrusting sampling end (38).
4. blood analyser sampling probe according to claim 2, is characterized in that, described gas channel (33) closes on a described end opening that thrusts sampling end (38); Locate at the described sampling end (38) that thrusts: the distance between described atmosphere conduction pipe (32) inwall and described stopple coupon (31) outer wall is less than 0.1 millimeter; Described atmosphere conduction pipe (32) is comprised of stainless-steel tube (321) and rubber tube (322), described stainless-steel tube (321) is connected with described needle stand (2) by described rubber tube (322), described atmospheric connection (35) and described atmosphere outlet (36) all are positioned on described stainless-steel tube (321), and described toroidal membrane (39) surrounding is fixedly connected with described atmosphere conduction pipe (32) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320315659 CN203275132U (en) | 2013-06-04 | 2013-06-04 | Sampling needle of blood analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320315659 CN203275132U (en) | 2013-06-04 | 2013-06-04 | Sampling needle of blood analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275132U true CN203275132U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320315659 Expired - Fee Related CN203275132U (en) | 2013-06-04 | 2013-06-04 | Sampling needle of blood analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275132U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606409A (en) * | 2015-12-28 | 2016-05-25 | 成都科林分析技术有限公司 | Multi-channel headspace extraction needle |
| CN106353522A (en) * | 2016-08-29 | 2017-01-25 | 桂林优利特医疗电子有限公司 | A mixed filter integrated sampling needle for in vitro diagnostic medical devices |
| CN109738663A (en) * | 2019-02-15 | 2019-05-10 | 上海奥普生物医药有限公司 | It punctures sample adding device, puncture loading methods and specific protein analyzer |
-
2013
- 2013-06-04 CN CN 201320315659 patent/CN203275132U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606409A (en) * | 2015-12-28 | 2016-05-25 | 成都科林分析技术有限公司 | Multi-channel headspace extraction needle |
| CN105606409B (en) * | 2015-12-28 | 2018-06-05 | 成都科林分析技术有限公司 | Multichannel head space extracts pin |
| CN106353522A (en) * | 2016-08-29 | 2017-01-25 | 桂林优利特医疗电子有限公司 | A mixed filter integrated sampling needle for in vitro diagnostic medical devices |
| CN106353522B (en) * | 2016-08-29 | 2018-06-08 | 桂林优利特医疗电子有限公司 | Integrated sampling needle is filtered for the mixing of in-vitro diagnosis medical instrument |
| CN109738663A (en) * | 2019-02-15 | 2019-05-10 | 上海奥普生物医药有限公司 | It punctures sample adding device, puncture loading methods and specific protein analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140604 |