CN203042315U - Puncture needle capable of generating negative pressure automatically - Google Patents
Puncture needle capable of generating negative pressure automatically Download PDFInfo
- Publication number
- CN203042315U CN203042315U CN 201220660633 CN201220660633U CN203042315U CN 203042315 U CN203042315 U CN 203042315U CN 201220660633 CN201220660633 CN 201220660633 CN 201220660633 U CN201220660633 U CN 201220660633U CN 203042315 U CN203042315 U CN 203042315U
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- Prior art keywords
- negative pressure
- syringe
- puncture needle
- needle
- automatic generation
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Abstract
The utility model provides a puncture needle capable of generating negative pressure automatically, which is composed of the following components: a needle cylinder, an elastic component, a needle head, a valve and a communicating part. The elastic component is equipped in the chamber of the needle cylinder. Two ends of the elastic component are respectively connected with the bottom of the chamber and a piston of the needle cylinder. The communicating part is communicated with the needle cylinder and the needle head. The valve is connected with the communicating part. In the use process of the puncture needle provided by the utility model, one-man operation is required, and the puncture needle has the advantages of simple structure and high convenience. The puncture needle provided by the utility model can be appropriately improved based on the needle cylinder and needle head of the prior-art syringe and has low popularization value. The puncture needle can automatically generate continuous negative pressure in sampling. Furthermore the negative pressure is controllable and more accurate.
Description
Technical field
This utility model relates to medical apparatus and instruments, and especially puncture needle particularly, relates to the puncture needle of automatic generation negative pressure.
Background technology
Puncture needle is medical apparatus and instruments commonly used in the percutaneous biopsy, the medical worker is under CT, X-ray, hyperacoustic guiding, determine position and the size of focus, and the skin surface in correspondence is made labelling, after the sterilization anesthesia, use biopsy needle to puncture to focus from gauge point, utilize negative pressure that sample of tissue is inspected by ready samples.
Existing percutaneous biopsy often uses common syringe sampling, is operated by double usually, and the focus point is also sought in people puncture, and the outside pull of another people drains the syringe piston of air in advance, under the effect of negative pressure with in the lesion tissue inhalation syringe.This type of sampling mode needs accurate cooperation, the operation easier between two medical matters personnel higher.Because the negative pressure that needs during pull is bigger, produces negative pressure in manual mode the syringe needle of syringe is subjected to displacement, cause actual sample point degree of accuracy to descend, cause the sampling failure easily.
Though another kind of puncture needle has designed the device of automatic negative-pressure, but, because of its project organization complicated, often need syringe body is partly carried out by a relatively large margin improvement, and can not the existing conventional syringe be used, caused the unnecessary wasting of resources and decrease in efficiency, the cost of popularization is higher.
The utility model content
At defective of the prior art, when providing a kind of the use, the purpose of this utility model can produce the puncture needle device of negative pressure automatically.
According to an aspect of the present utility model, a kind of puncture needle of automatic generation negative pressure is provided, comprise syringe, elastomeric element, syringe needle, valve, interconnecting part, wherein, described elastomeric element is arranged on the tube intracavity of described syringe, the two ends of described elastomeric element connect at the bottom of the chamber in described tube chamber respectively and the piston of described syringe, and described interconnecting part is communicated with described syringe and syringe needle, and described valve connects described interconnecting part.
Preferably, described valve is flow rate regulating valve or gas-tight switch.
Preferably, also comprise collection container, described interconnecting part is provided with opening, and described opening part is connecting collection container.
Preferably, the natural extended length of described elastomeric element is no more than the stack shell length of described syringe.
Preferably, elastomeric element is helical spring or gum elastic.
Preferably, described helical spring end also tightly polishes.
Preferably, described helical spring diameter is slightly less than the internal diameter of described syringe.
Preferably, described interconnecting part is made of rigid material.
Preferably, described interconnecting part two ends are respectively arranged with syringe interface and needle hub.
Preferably, the side of described collection container has graduation mark.
Compared with prior art, utility model of the present invention has following beneficial effect: when the hand-held interconnecting part of medical worker and syringe puncture, after having determined sample point, can press the valve button, make valve open, at this moment, syringe needle namely is communicated with by interconnecting part with syringe, when helical spring outwards promotes piston, has just formed negative pressure automatically, this suction function is in the syringe needle oral area, and tissue or the body fluid of syringe needle oral area is pumped in the collection container.Reselect another sample point at needs, when the link of perhaps taking a sample finishes, can valve-off, extract puncture needle.Because negative pressure triggering for generating automatically, and valve is positioned at the handgrip part of puncture needle just, so only medical matters personnel of need can finish whole piercing process.And because the moderate length of elastomeric element, when the medical worker forgot valve-off, piston also can be stayed in the syringe, and can not released outside the syringe by elastomeric element.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
The side-looking structural representation of the puncture needle of the automatic generation negative pressure that provides according to this utility model is provided Fig. 1;
The plan structure sketch map of the puncture needle of the automatic generation negative pressure that provides according to this utility model is provided Fig. 2;
Fig. 3 for the puncture needle of the automatic generation negative pressure that provides according to this utility model shown in Figure 2 along A-A to the sectional structure sketch map.
Among the figure: 1 is syringe needle, and 2 is valve, and 3 is collection container, and 4 is elastomeric element, and 5 is piston, and 6 is syringe, and 7 is piston handle, and 8 is syringe interface, and 9 is needle hub.
The specific embodiment
Below in conjunction with specific embodiment this utility model is elaborated.Following examples will help those skilled in the art further to understand this utility model, but not limit this utility model in any form.Should be pointed out that to those skilled in the art, under the prerequisite that does not break away from this utility model design, can also make some distortion and improvement.These all belong to protection domain of the present utility model.
Fig. 1 to Fig. 3 shows the structural representation according to the puncture needle of the automatic generation negative pressure of this utility model first embodiment.Particularly, in the present embodiment, the puncture needle of automatic generation negative pressure is provided according to this utility model, comprise syringe 6, elastomeric element 4, syringe needle 1, valve 2, interconnecting part 10, collection container 3, wherein, described elastomeric element 4 is arranged on the tube intracavity of described syringe 6, and the two ends of described elastomeric element 4 connect at the bottom of the chamber in described tube chamber respectively and the piston 5 of described syringe 6, described interconnecting part is communicated with described syringe 6 and syringe needle 1, and described valve 2 connects described interconnecting part 10.
More specifically, elastomeric element is helical spring, and described helical spring end also tightly polishes, and described helical spring diameter is slightly less than the internal diameter of described syringe, and the natural extended length of described spring is no more than the stack shell length of described syringe.And in a variation example of present embodiment, described elastomeric element 4 can also be gum elastic.
Further, described interconnecting part is provided with opening, and described opening part is connecting collection container 3, and the side of described collection container 3 has graduation mark, and the medical worker can in time adjust and select the collection container of suitable volume according to the sample contents volume.
Further, described interconnecting part is made of rigid material.Interconnecting part is made by hard material, for example, hard plastic, glass etc., described interconnecting part two ends are respectively arranged with syringe interface 8 and needle hub 9.
Further particularly, described valve 2 is flow rate regulating valve or gas-tight switch.Those skilled in the art can be closed in conjunction with the gentle make and break of the described flow rate regulating valve of existing techniques in realizing, do not repeat them here, and for example, described flow rate regulating valve is usually used in tube for transfusion, and gas-tight switch is usually used in the domestic bottle gas.
Again further particularly, described syringe 6 and described syringe needle 1 can be the parts of ordinary syringe.Be provided with valve 2 and collection container 3 in the appropriate location of interconnecting part, along described interconnecting part 10 by far-end on the direction of near-end, be disposed with valve 2 and collection container 3, and valve is more near needle end.The two ends of interconnecting part are respectively arranged with syringe interface 8 and needle hub 9, and are good to guarantee air-tightness.
Fig. 2 provides a kind of cutaway view of automatic negative-pressure puncture needle, wherein in syringe 6, be provided with spring 4 as elastomeric element, described elastomeric element 4 is used for driving described piston 5 and resets, the natural extended length of elastomeric element 4 slightly is shorter than the length of syringe 6 main bodys, the diameter of elastomeric element 4 is slightly less than the internal diameter of syringe 6, needs and tightly polishes.
In a preferred specific embodiment of the present utility model, open valve by the medical worker during use, at the bottom of piston 7 is pushed into tin, spring is compressed as much as possible, then valve-off.During puncture, hand-held interconnecting part 10 and syringe 6, syringe needle 1 part is pushed near the focus, after determining focus point, open valve 2, at this moment, syringe needle 1 and syringe 6 are communicated with, the negative pressure that forms in the time of spring 4 bounce-backs can suck syringe needle with tissue and body fluid near the syringe needle 1, and make it to flow in the collection container 3.At needs during to the sampling of another sample point, can valve-off 2, determine sample point after, reopen valve 2, continue the repeated sampling process.After sampling finished, valve-off 2 was extracted puncture needle.
More than specific embodiment of the utility model is described.It will be appreciated that this utility model is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present utility model.
Claims (10)
1. puncture needle that automatically produces negative pressure, it is characterized in that, comprise syringe, elastomeric element, syringe needle, valve, interconnecting part, wherein, described elastomeric element is arranged on the tube intracavity of described syringe, the two ends of described elastomeric element connect at the bottom of the chamber in described tube chamber respectively and the piston of described syringe, and described interconnecting part is communicated with described syringe and syringe needle, and described valve connects described interconnecting part.
2. the puncture needle of automatic generation negative pressure according to claim 1 is characterized in that, described valve is flow rate regulating valve or gas-tight switch.
3. the puncture needle of automatic generation negative pressure according to claim 1 is characterized in that, also comprises collection container, and described interconnecting part is provided with opening, and described opening part is connecting collection container.
4. the puncture needle of automatic generation negative pressure according to claim 1 is characterized in that, the natural extended length of described elastomeric element is no more than the stack shell length of described syringe.
5. the puncture needle of automatic generation negative pressure according to claim 1 is characterized in that, elastomeric element is helical spring or gum elastic.
6. the puncture needle of automatic generation negative pressure according to claim 5 is characterized in that, described helical spring end also tightly polishes.
7. the puncture needle of automatic generation negative pressure according to claim 5 is characterized in that, described helical spring diameter is slightly less than the internal diameter of described syringe.
8. the puncture needle of automatic generation negative pressure according to claim 1 is characterized in that, described interconnecting part is made of rigid material.
9. the puncture needle of automatic generation negative pressure according to claim 8 is characterized in that, described interconnecting part two ends are respectively arranged with syringe interface and needle hub.
10. the puncture needle of automatic generation negative pressure according to claim 3 is characterized in that, the side of described collection container has graduation mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660633 CN203042315U (en) | 2012-12-04 | 2012-12-04 | Puncture needle capable of generating negative pressure automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660633 CN203042315U (en) | 2012-12-04 | 2012-12-04 | Puncture needle capable of generating negative pressure automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203042315U true CN203042315U (en) | 2013-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220660633 Expired - Fee Related CN203042315U (en) | 2012-12-04 | 2012-12-04 | Puncture needle capable of generating negative pressure automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203042315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107029309A (en) * | 2017-05-17 | 2017-08-11 | 上海交通大学医学院附属第九人民医院 | A kind of injector for medical purpose and application method for facilitating drawing liquid |
-
2012
- 2012-12-04 CN CN 201220660633 patent/CN203042315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107029309A (en) * | 2017-05-17 | 2017-08-11 | 上海交通大学医学院附属第九人民医院 | A kind of injector for medical purpose and application method for facilitating drawing liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20151204 |
|
| EXPY | Termination of patent right or utility model |