CN102805627A - Splash-proof double-channel sampling needle head of blood collection tube - Google Patents
Splash-proof double-channel sampling needle head of blood collection tube Download PDFInfo
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- CN102805627A CN102805627A CN2012102648221A CN201210264822A CN102805627A CN 102805627 A CN102805627 A CN 102805627A CN 2012102648221 A CN2012102648221 A CN 2012102648221A CN 201210264822 A CN201210264822 A CN 201210264822A CN 102805627 A CN102805627 A CN 102805627A
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- air inlet
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Abstract
The invention relates to the technical field of medical apparatus and instruments, in particular to a splash-proof double-channel sampling needle head of a blood collection tube. The splash-proof double-channel sampling needle head is composed of a needle holder, an air inlet hole, a blood drawing channel, an air inlet channel, an air outlet hole, an internal tube and an external tube, wherein the external tube and the internal tube are circular tubes made of stainless steel, and the internal tube is positioned in the external tube. The air inlet channel is a space formed by the external wall of the internal tube and the internal wall of the external pipe and in a crescent plane, and an internal space of the internal tube serves as the blood drawing channel. An upper port and a lower port of the air inlet channel are closed; and the air inlet hole and the air outlet hole are formed on the sidewall of the air inlet channel. According to the splash-proof double-channel sampling needle head, the blood drawing channel and the air inlet channel are integrally arranged, so that a blood sample in a vacuum blood collection tube can be directly drawn without removing a rubber piston, and as a result, the working efficiency is improved, and the operation of analyzing the blood sample is safer and more reliable.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly relate to a kind of blood taking tube splashproof dual pathways sampling syringe needle.
Background technology
The existing process that blood sample in the vacuum test tube is taken out all is that the plastics splash cap and the plug of vacuum test tube are pulled up from the test tube mouth, entry needle is stretched into the liquid from the mouth of pipe extract then.Owing to have certain negative pressure in the blood taking tube, pull away moment of test tube at plug, ambient atmos pours in the pipe, can cause that the blood in the pipe outwards splashes.Although existing vacuum test tube has been equipped with splash cap in its rubber stopper outside; This can not stop blood fully and contact with the operator; Because if the splashing amount of blood is bigger; Still can flow out along the inwall lower edge of splash cap, therefore existing laboratory sampling mode still exists certain danger.Therefore the medical personnel is in the process that plug is pulled up, and always very slow and meticulous, this has also reduced the work efficiency of blood sample analysis.
For addressing the above problem; Application number is that 201020665773.9 " a kind of sampling probe of analyser " is at the groove of offering on the sidewall of syringe needle more than two; To obtain the balance of blood taking tube external and internal pressure; But the laboratory personnel finds in life-time service, passes in the process of plug at this syringe needle, and the groove on the sidewall of syringe needle still can be by the plug shutoff.Trace it to its cause; Be as the optimal material of making the test tube plug because of butyl rubber; It possesses better elastic and air-tightness; Even the effect of balance blood taking tube inner and outer air pressure all can be carried out the elasticity shutoff by butyl rubber, so technique scheme can not really be played in trickle slit on the syringe needle.
Summary of the invention
The present invention provides a kind of medical personnel of confession under the prerequisite of not pulling up plug for solving the deficiency of prior art, can directly from vacuum test tube, take a blood sample, and can guarantee the blood taking tube splashproof dual pathways sampling syringe needle of medical personnel's safety fully.
The scheme that solves technical problem of the present invention is: blood taking tube splashproof dual pathways sampling syringe needle is made up of needle stand, air inlet, blood drawing passage, inlet channel, venthole, interior pipe and outer tube.Wherein, outer tube and interior pipe are the pipe of stainless steel, and the overall diameter of interior pipe is less than the interior diameter of outer tube, and interior pipe is in the outer tube, and 1.2 radian scopes of the 0.9 radian scope of the outer wall of interior pipe and the inwall of outer tube are an integral body.The lower end of the coalition of outer tube and interior pipe has unified inclined-plane.Inlet channel is that the plane that the inwall of outer wall and the outer tube of interior pipe constitutes is meniscate space, and the inner space of interior pipe is the blood drawing passage.The lower end of needle stand combines with the upper end of outer tube, and the inside of needle stand communicates with the port of blood drawing passage.The upper and lower port of inlet channel all seals; Have an air inlet and a venthole on the sidewall of inlet channel; Air inlet is positioned at the top of venthole, and the hole heart distance of air inlet and venthole is not less than 2.0cm, and the vertical distance of the lower end of pipe is not less than 1.5cm in the Kong Xinyu of venthole.Air inlet and venthole all communicate with inlet channel, and the area of air inlet and venthole all is not less than the cross-sectional area of inlet channel.
When from vacuum test tube, extracting blood sample; Earlier needle stand is placed in syringe end; Again outer tube is passed the plug of filling in vacuum test tube upper end from top to bottom, and guarantee that venthole is in the vacuum test tube and is in intraluminal fluid face top, guarantees that simultaneously air inlet position is outside vacuum test tube.Spur piston then; Under the suction function in vacuum test tube; Outside air enters in the vacuum test tube from air inlet entering inlet channel and from venthole; And the blood sample in the vacuum test tube enters in the syringe of syringe from the lower end of interior pipe through the blood drawing passage, outer tube is extracted to get final product at last from plug.
Adopt such scheme, compared with prior art, the present invention has following marked improvement:
Passage and inlet channel are set to one because the present invention draws blood; Simultaneously; Therefore the unimpeded air-tightness and elastic influence that does not receive butyl rubber plug of said inlet channel can be implemented under the situation of not pulling up plug, the direct blood sample of extracting vacuum blood taking tube inside just under air-tight state.So not only omitted and extracted this step that wastes time and energy of plug, make more convenient to operate, improved work efficiency; The more important thing is that the blood when having stopped to extract plug in the pipe splashes and to the danger that the medical worker causes, makes the operation safe of blood sample analysis reliable.
Description of drawings
Structural representation when Fig. 1 inserts vacuum test tube for the present invention;
Fig. 2 is the A-A section enlarged diagram of Fig. 1;
Fig. 3 is the B-B section enlarged diagram of Fig. 1.
Among the figure, on behalf of outside air, the camber line arrow get into the flow direction of vacuum test tube; The flow direction that blood sample in the straight arrows representative pipe is drawn out of.
Among the figure: 1. manage 7. outer tubes, 8. vacuum test tubes, 9. plugs in needle stand 2. air inlets 3. blood drawing passages 4. inlet channels 5. ventholes 6.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
Blood taking tube splashproof dual pathways sampling syringe needle is made up of needle stand 1, air inlet 2, blood drawing passage 3, inlet channel 4, venthole 5, interior pipe 6 and outer tube 7.Wherein, outer tube 7 and interior pipe 6 are the pipe of stainless steel, and the overall diameter of interior pipe 6 is less than the interior diameter of outer tube 7, and interior pipe 6 is in the outer tube 7, and 1.2 radian scopes of the 0.9 radian scope of the outer wall of interior pipe 6 and the inwall of outer tube 7 are an integral body.The lower end of the coalition of outer tube 7 and interior pipe 6 has unified inclined-plane.
The lower end of needle stand 1 combines with the upper end of outer tube 7, and the inside of needle stand 1 communicates with the port of blood drawing passage 3.
The upper and lower port of inlet channel 4 all seals; Have an air inlet 2 and a venthole 5 on the sidewall of inlet channel 4; Air inlet 2 is positioned at the top of venthole 5; The hole heart distance of air inlet 2 and venthole 5 is not less than 2.0cm, and the vertical distance of the lower end of pipe 6 is not less than 1.5cm in the Kong Xinyu of venthole 5.
When from vacuum test tube, extracting blood sample; Earlier needle stand 1 is placed in syringe end; Again outer tube 7 is passed the plug of filling in vacuum test tube 8 upper ends 9 from top to bottom; And assurance venthole 5 is in the vacuum test tube 8 and is in intraluminal fluid face top, guarantees that simultaneously air inlet 2 is in outside the vacuum test tube 8.Spur piston then; Under the suction function in vacuum test tube 8; Outside air enters in the vacuum test tube 8 from air inlet 2 entering inlet channels 4 and from venthole 5; And the blood sample in the vacuum test tube 8 enters in the syringe of syringe through blood drawing passage 3 from the lower end of interior pipe 6, outer tube 7 is extracted to get final product at last from plug 9.
Claims (1)
1. a blood taking tube splashproof dual pathways sampling syringe needle is made up of needle stand, air inlet, blood drawing passage, inlet channel, venthole, interior pipe and outer tube, and it is characterized in that: outer tube and interior pipe are the pipe of stainless steel; The overall diameter of interior pipe is less than the interior diameter of outer tube, and interior pipe is in the outer tube, and 1.2 radian scopes of the 0.9 radian scope of the outer wall of interior pipe and the inwall of outer tube are an integral body; The lower end of the coalition of outer tube and interior pipe has unified inclined-plane; Inlet channel is that the plane that the inwall of outer wall and the outer tube of interior pipe constitutes is meniscate space, and the inner space of interior pipe is the blood drawing passage, and the lower end of needle stand combines with the upper end of outer tube; And the inside of needle stand communicates with the port of blood drawing passage; The upper and lower port of inlet channel all seals, and has an air inlet and a venthole on the sidewall of inlet channel, and air inlet is positioned at the top of venthole; The hole heart distance of air inlet and venthole is not less than 2.0cm; The vertical distance of the lower end of pipe is not less than 1.5cm in the Kong Xinyu of venthole, and air inlet and venthole all communicate with inlet channel, and the area of air inlet and venthole all is not less than the cross-sectional area of inlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102648221A CN102805627A (en) | 2012-07-29 | 2012-07-29 | Splash-proof double-channel sampling needle head of blood collection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102648221A CN102805627A (en) | 2012-07-29 | 2012-07-29 | Splash-proof double-channel sampling needle head of blood collection tube |
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| Publication Number | Publication Date |
|---|---|
| CN102805627A true CN102805627A (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102648221A Pending CN102805627A (en) | 2012-07-29 | 2012-07-29 | Splash-proof double-channel sampling needle head of blood collection tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406822A (en) * | 2014-12-08 | 2015-03-11 | 重庆南方数控设备有限责任公司 | Puncture sampling device for hemorheology detection |
| CN109820520A (en) * | 2019-02-14 | 2019-05-31 | 深圳市远景医疗器械模具有限公司 | A kind of manufacturing method of Dual-layer vacuum blood taking tube tube body |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0795742A1 (en) * | 1996-03-14 | 1997-09-17 | Toa Medical Electronics Co., Ltd. | Sample sucking pipe and method for manufacturing same |
| CN101566549A (en) * | 2009-05-27 | 2009-10-28 | 重庆天海医疗设备有限公司 | Sampling/measuring needle of blood viscosity measurement device |
| CN201903464U (en) * | 2010-12-17 | 2011-07-20 | 上海惠中医疗科技有限公司 | Sampling needle of analyzer |
| CN202837036U (en) * | 2012-07-29 | 2013-03-27 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Splash-proof double-channel sampling needle for blood collection tube |
-
2012
- 2012-07-29 CN CN2012102648221A patent/CN102805627A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0795742A1 (en) * | 1996-03-14 | 1997-09-17 | Toa Medical Electronics Co., Ltd. | Sample sucking pipe and method for manufacturing same |
| CN101566549A (en) * | 2009-05-27 | 2009-10-28 | 重庆天海医疗设备有限公司 | Sampling/measuring needle of blood viscosity measurement device |
| CN201903464U (en) * | 2010-12-17 | 2011-07-20 | 上海惠中医疗科技有限公司 | Sampling needle of analyzer |
| CN202837036U (en) * | 2012-07-29 | 2013-03-27 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Splash-proof double-channel sampling needle for blood collection tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406822A (en) * | 2014-12-08 | 2015-03-11 | 重庆南方数控设备有限责任公司 | Puncture sampling device for hemorheology detection |
| CN109820520A (en) * | 2019-02-14 | 2019-05-31 | 深圳市远景医疗器械模具有限公司 | A kind of manufacturing method of Dual-layer vacuum blood taking tube tube body |
| CN109820520B (en) * | 2019-02-14 | 2022-07-15 | 深圳市远景医疗器械模具有限公司 | Method for manufacturing double-layer vacuum blood collection tube body |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121205 |