CN209360843U - The fine needle puncture device of Dispensable continuous negative-pressure - Google Patents
The fine needle puncture device of Dispensable continuous negative-pressure Download PDFInfo
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- CN209360843U CN209360843U CN201821752892.0U CN201821752892U CN209360843U CN 209360843 U CN209360843 U CN 209360843U CN 201821752892 U CN201821752892 U CN 201821752892U CN 209360843 U CN209360843 U CN 209360843U
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- bead
- pintle
- hole
- needle tubing
- needle
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Abstract
The utility model discloses a kind of fine needle puncture devices of Dispensable continuous negative-pressure, including needle tubing, pintle, injection needle and rubber plug, injection needle is connected to the front end of needle tubing, the front end of pintle is located in needle tubing, and rubber plug is connected in the front end of pintle, the rear end of pintle is located at outside needle tubing, a bead screw is equipped in pintle, a hole is provided on the tube wall of needle tubing, bead screw includes bead, and the diameter of bead is greater than the diameter in hole, with the past post-tensioning of pintle, when ripple pearl screw is pulled to hole site, the constraint that bead loses needle tubing can be popped up and is stuck in hole.In use, when bead is sprung into hole, hole can block bead the utility model, that is, pintle is stuck, and can also continue to maintain negative pressure without the hand drawing of operator at this time, is conducive to operator and concentrates one's energy to ensure the accuracy of puncture.
Description
Technical field
The utility model relates to medical instruments fields, more particularly, to a kind of fine needle puncture device of Dispensable continuous negative-pressure.
Background technique
Existing disposable fine needle puncture device needs the traction force by operator's hand when in use to maintain negative pressure, operating process
In will affect the accuracy of puncture, while it is longer to puncture the time, keeps patient more painful.
Utility model content
The utility model is above-mentioned in order to overcome the shortcomings of, provides a kind of Dispensable continuous negative-pressure for being able to maintain that negative pressure
Fine needle puncture device.
The technical solution of the utility model is as follows:
A kind of fine needle puncture device of Dispensable continuous negative-pressure, including needle tubing 1, pintle 2, injection needle 3 and rubber plug 4, injection needle 3
Be connected to the front end of needle tubing 1, the front end of pintle 2 is located in needle tubing 1, and rubber plug 4 is connected in the front end of pintle 2, make pintle front end with
The rear end of tight between needle tubing, pintle 2 is located at outside needle tubing 1, and above structure is identical as existing syringe, is equipped in pintle 2
One bead screw is provided with a hole 8 on the tube wall of needle tubing 1, and bead screw includes bead 5, and the diameter of bead 5 is greater than the straight of hole 8
Diameter, with the past post-tensioning of pintle, when ripple pearl screw moves on to 8 position of hole, the constraint that bead 5 loses needle tubing can pop up and be stuck in hole
In 8.
The distance between the ripple pearl screw and rubber plug are 1.8-2.5cm, preferably 2cm.
The bead screw further includes shell 6 and spring 7, and bead 5 and shell 6 are by suitable for medical rigid plastics system
First placed at, shell 6 in pintle injection molding be molded in a mold with pintle 2 it is into a single integrated structure, the both ends of spring 7 respectively with
The bead 5 of 6 opening of shell is connected with the bottom of shell 6.
The beneficial effects of the utility model are:
In use, when bead is sprung into hole, hole can block bead the utility model, that is, and pintle is stuck,
It can also continue to maintain negative pressure without the hand drawing of operator at this time, mode of operation is simple, is conducive to operator and concentrates one's energy really
Protect the accuracy punctured.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
Fig. 1 is the schematic diagram of the utility model when bead is not stuck in hole；
Fig. 2 is the schematic diagram of the utility model when bead is stuck in hole.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
The fine needle puncture device of Dispensable continuous negative-pressure as depicted in figs. 1 and 2, including needle tubing 1, pintle 2,3 and of injection needle
Rubber plug 4, injection needle 3 are connected to the front end of needle tubing 1, and the front end of pintle 2 is located in needle tubing 1, and rubber plug 4 is connected in the front end of pintle 2,
Making tight between pintle front end and needle tubing, the rear end of pintle 2 is located at outside needle tubing 1, and above structure is identical as existing syringe,
A bead screw is equipped in pintle 2, the distance between the ripple pearl screw and rubber plug are 1.8-2.5cm, most preferably 2cm.Glass
Pearl screw includes bead 5, shell 6 and spring 7, and bead 5 and shell 6 are made by medical rigid plastics is suitable for, such as asphalt mixtures modified by epoxy resin
Rouge, polypropylene etc., shell 6 first placed in pintle injection molding be molded in a mold with pintle 2 it is into a single integrated structure, spring 7
Both ends are connect with the bottom of the bead 5 of 6 opening of shell and shell 6 respectively.A hole 8, bead 5 are provided on the tube wall of needle tubing 1
Diameter be greater than hole 8 diameter, with the past post-tensioning of pintle, when ripple pearl screw is pulled to 8 position of hole, bead 5 loses needle tubing
Constraint can pop up and be stuck in hole 8.
In use, when bead is sprung into hole, hole can block bead the utility model, that is, and pintle is stuck,
Unless an outside force is applied on bead, otherwise pintle will not move again, can also continue to tie up without the hand drawing of operator at this time
Negative pressure is held, mode of operation is simple, is conducive to operator and concentrates one's energy to ensure the accuracy of puncture.
Above-mentioned foundation the utility model is enlightenment, and through the above description, relevant staff completely can be not
In the range of deviateing this item utility model technical idea, various changes and amendments are carried out.This item utility model it is technical
Range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (4)
1. a kind of fine needle puncture device of Dispensable continuous negative-pressure, including needle tubing (1), pintle (2), injection needle (3) and rubber plug (4),
Injection needle (3) is connected to the front end of needle tubing (1), and the front end of pintle (2) is located in needle tubing (1), and rubber plug (4) is connected in pintle (2)
Front end, the rear end of pintle (2) is located at needle tubing (1) outside, it is characterized in that: a bead screw is equipped in pintle (2), in needle tubing
(1) it is provided on tube wall a hole (8), bead screw includes bead (5), and the diameter of bead (5) is greater than the diameter of hole (8), in wave
When pearl screw moves on to the position in hole (8), bead (5) can be popped up and is stuck in hole (8).
2. the fine needle puncture device of Dispensable continuous negative-pressure according to claim 1, it is characterized in that: the ripple pearl screw and glue
The distance between plug is 1.8-2.5cm.
3. the fine needle puncture device of Dispensable continuous negative-pressure according to claim 1, it is characterized in that: the ripple pearl screw and glue
The distance between plug is 2cm.
4. the fine needle puncture device of Dispensable continuous negative-pressure according to claim 1, it is characterized in that: the bead screw also wraps
Shell (6) and spring (7) are included, bead (5) and shell (6) are made of plastics, and shell (6) and pintle (2) are into a single integrated structure, bullet
The both ends of spring (7) are connect with the bottom of the bead (5) of shell (6) opening and shell (6) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821752892.0U CN209360843U (en) | 2018-10-17 | 2018-10-17 | The fine needle puncture device of Dispensable continuous negative-pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821752892.0U CN209360843U (en) | 2018-10-17 | 2018-10-17 | The fine needle puncture device of Dispensable continuous negative-pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209360843U true CN209360843U (en) | 2019-09-10 |
Family
ID=67838988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821752892.0U Active CN209360843U (en) | 2018-10-17 | 2018-10-17 | The fine needle puncture device of Dispensable continuous negative-pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209360843U (en) |
-
2018
- 2018-10-17 CN CN201821752892.0U patent/CN209360843U/en active Active
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| GR01 | Patent grant |