CN205697950U - Negative pressure puncture device - Google Patents
Negative pressure puncture device Download PDFInfo
- Publication number
- CN205697950U CN205697950U CN201620252347.XU CN201620252347U CN205697950U CN 205697950 U CN205697950 U CN 205697950U CN 201620252347 U CN201620252347 U CN 201620252347U CN 205697950 U CN205697950 U CN 205697950U
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- CN
- China
- Prior art keywords
- fixture block
- negative pressure
- piston rod
- syringe
- described fixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
nullThe open a kind of negative pressure puncture device of the utility model，Including injector syringe，It is provided with piston rod inside injector syringe，Piston rod front end is provided with piston，The syringe mouth of injector syringe is provided with negative pressure control valve，Injector syringe is provided with piston rod expansion locking device，Vacuum magnitude between piston rod expansion locking device regulating piston and negative pressure control valve，The utility model can close negative pressure control valve before puncture，Pull back to take out in piston rod makes injector syringe and form negative pressure，Then utilizing piston rod expansion locking device to regulate the negative pressure in injector syringe makes its negative regulation in meeting the vacuum magnitude puncturing in requiring and utilizing radial contraction controlling organization locking pin barrel syringe thus maintaining Syringe injector，Allow an operator to concentrate one's energy to position focus，Effectively prevent the impact on negative pressure for the pull syringe piston、The impact that positioning is caused by the dispersion of syringe shake and notice，Whole negative pressure puncture device is lightly attractive in appearance.
Description
Technical field
The utility model relates to technical field of medical instruments, is specifically related to a kind of negative pressure puncture device.
Background technology
Puncture is puncture needle to thrust body cavity extraction secretion chemically examine, and injects gas to body cavity or contrast preparation does
Contrast examination, or a kind of Clinics of injection of medicine in body cavity, be medical diagnosis on disease clinically or treatment
Common method, has the effect that additive method is not replaced.At present, existing puncture needle mainly uses commonly
Syringe puncture, operation is more laborious, and operator also constantly to notice puncture needle while puncturing
Negative pressure value whether up to standard, it is impossible to concentrate one's energy position focus, operation tends to occur that syringe is trembled
The abnormal conditions impact such as dynamic punctures, and the puncture needle negative pressure of routine is unstable, easily cause at puncture tissue or
Cell suction is undesirable, it is difficult to meet the needs of clinical pathology plate coating checking, repeatedly punctures that to be easily generated inflammation anti-
Answer and the uncomfortable of patient reacts, cause the local of operative site bleeding, tumour or cancer cell to shift.
Utility model content
For solving above technical problem, the utility model provides a kind of negative pressure puncture device, and this sting device enters
Just can form stable negative pressure before entering patient skin tissue, and the size of negative pressure can be regulated as required.
Technical scheme is as follows: a kind of negative pressure puncture device, including injector syringe, inside this injector syringe
Being provided with piston rod, described piston rod front end is provided with piston, and it it is critical only that: the syringe of described injector syringe
Mouth is provided with negative pressure control valve, is provided with the flexible locking of piston rod between described injector syringe and described piston rod
Device, this piston rod expansion locking device regulates the vacuum magnitude between described piston and described negative pressure control valve.
Use the technical program to provide the benefit that and can close negative pressure control valve before puncture, pull back and take out piston rod and make
Form negative pressure in injector syringe, then utilize piston rod expansion locking device to regulate bearing in injector syringe
Pressing and lock vacuum magnitude makes it meet puncture requirement.
As preferably: above-mentioned piston rod expansion locking device includes at least one fixture block, on described piston rod
Being provided with radial contraction controlling organization, described fixture block is connected with described radial contraction controlling organization, described syringe
Syringe inwall is provided with fixture block positive stop strip.Use this programme can utilize while pull piston rod backward radially
Shrinking controlling organization makes fixture block radial contraction, it is to avoid fixture block is stopped by fixture block positive stop strip, facilitates pull piston rod,
Make it reset when the negative pressure in injector syringe reaches to unclamp radial contraction controlling organization after requirement, now live
Plug can be to the syringe mouth direction of injector syringe retraction under the effect of negative pressure, when fixture block retraction runs into fixture block limit
Settle out after the bar of position, thus the negative regulation in maintaining injector syringe.
Above-mentioned piston rod is cylinder, and described radial contraction controlling organization includes being set in parallel in described piston rod
Two pieces of fixture block gripper shoes, two pieces of described fixture block gripper shoes are arranged along the length direction of described piston rod, two pieces
Described fixture block gripper shoe lays respectively at the both sides of the axial line of described piston rod, two pieces of described fixture block gripper shoes
Front portion be respectively equipped with described fixture block, described fixture block radially outward passes the barrel of described piston rod, two pieces of institutes
Stating and being provided with stage clip between fixture block gripper shoe, this stage clip two ends are fixing with two pieces of described fixture block gripper shoes respectively to be connected,
The rear portion of described fixture block gripper shoe is provided with control button, and described control button radially outward passes described piston rod
Barrel.Use this programme can by press control button compress stage clip make fixture block gripper shoe radially near from
And drive fixture block radial contraction, facilitate pull piston rod, when the negative pressure in syringe reaches can unclamp after requirement control
Button fixture block gripper shoe processed resets, thus drives card block reset, and the fixture block after reset runs into fixture block positive stop strip
Stop settles out, thus the negative regulation in maintaining injector syringe, radial contraction controlling organization sets simultaneously
Put at piston rod inner, make whole negative pressure puncture apparatus structure compact, simple operation.
The rear portion of above-mentioned piston rod is provided with drawing handle.This structure is used to facilitate push-and-pull piston rod.
The rear portion of said syringe syringe is provided with syringe handle.Use when the design is convenient to be punctured and grip syringe needle
Cylinder.
Respectively being respectively equipped with four described fixture blocks in two pieces of described fixture block gripper shoes, four described fixture blocks set vertically
Putting in described fixture block gripper shoe, the spacing between adjacent described fixture block is equal.Use the design can facilitate root
According to needing to regulate the vacuum magnitude of sting device, with satisfied different puncture demands.
Above-mentioned fixture block positive stop strip totally two, described fixture block positive stop strip is just to being arranged on described fixture block gripper shoe radially
Described injector syringe inwall on.Program fixture block positive stop strip is used to be arranged on outside injector syringe inside
Shape is attractive in appearance, saves space.
Above-mentioned stage clip totally two, two described stage clips are axially distributed between two pieces of described fixture block gripper shoes.
Use the flexible reaction of this programme fixture block sensitiveer, react rapider.
The external part of above-mentioned fixture block is provided with guiding surface, and this guiding surface is towards described fixture block positive stop strip.Use
The design draws to be easy to fixture block and walks around fixture block positive stop strip when taking out piston rod.
Beneficial effect: use the beneficial effects of the utility model to be to close negative pressure control valve before puncture, to
Post-tensioning is taken out in piston rod makes injector syringe and is formed negative pressure, then utilizes piston rod expansion locking device regulation note
Negative pressure in emitter syringe makes it meet puncture requirement and utilize radial contraction controlling organization locking pin barrel syringe
In vacuum magnitude thus the negative regulation in maintaining Syringe injector, allow an operator to positioning disease of concentrating one's energy
Stove, effectively prevent pull syringe piston on the impact of negative pressure, syringe shakes and the dispersion of notice is right
The impact that positioning causes, whole negative pressure puncture device is lightly attractive in appearance.
Brief description
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
As it is shown in figure 1, a kind of negative pressure puncture device, including injector syringe 2, this injector syringe 2 is internal
Being provided with piston rod 1, described piston rod 1 front end is provided with piston 5, the syringe mouth of described injector syringe 2 sets
There is negative pressure control valve 7, between described injector syringe 2 and described piston rod 1, be provided with piston rod flexible locking dress
Putting, the negative pressure between the described piston 5 of this piston rod expansion locking device regulation and described negative pressure control valve 7 is big
Little, described piston rod expansion locking device includes at least one fixture block 6, is provided with radially on described piston rod 1
Shrinking controlling organization, described fixture block 6 is connected with described radial contraction controlling organization, described injector syringe 2
Inwall is provided with fixture block positive stop strip 9.
Described piston rod 1 is cylinder, and described radial contraction controlling organization includes being set in parallel in described piston rod 1
In two pieces of fixture block gripper shoes 11, two pieces of described fixture block gripper shoes 11 set along the length direction of described piston rod 1
Putting, two pieces of described fixture block gripper shoes 11 lay respectively at the both sides of the axial line of described piston rod 1, described in two pieces
Fixture block gripper shoe 11 along the axial line of described piston rod 1 just to setting, two pieces of described fixture block gripper shoes 11
Front portion be respectively respectively equipped with four described fixture blocks 6, four described fixture blocks 6 are axially arranged on described fixture block and support
On plate 11, the spacing between adjacent described fixture block 6 is equal, and described fixture block 6 radially outward passes described respectively
The barrel of piston rod 1, is provided with stage clip 8 between two pieces of described fixture block gripper shoes 11, this stage clip 8 totally two,
Two described stage clips 8 are axially distributed between two pieces of described fixture block gripper shoes 11, two described stage clips 8
Two ends are fixed with two pieces of described fixture block gripper shoes 11 respectively and are connected, the rear portion of two pieces of described fixture block gripper shoes 11
Being respectively equipped with control button 10, described control button 10 radially outward passes the barrel of described piston rod 1 respectively,
Described fixture block positive stop strip 9 totally two, described fixture block positive stop strip 9 is just to being arranged on described fixture block gripper shoe 11 footpath
To described injector syringe 2 inwall on, described fixture block positive stop strip 9 is near described injector syringe 2
Rear portion.
From this figure it can be seen that the rear portion of described injector syringe 2 is provided with syringe handle 3, described piston rod 1
Rear portion be provided with drawing handle 4, the external part of described fixture block 6 is equipped with guiding surface, this guiding surface towards
Described fixture block positive stop strip 9.
Puncture needle can be installed in the syringe mouth of injector syringe 2 during use, be then shut off negative pressure control valve 7,
Pull piston rod 1 makes the injector syringe 2 interior formation negative pressure of piston 5 front end backward, at pull piston rod 1
While press control button 10 and make two pieces of fixture block gripper shoes 11 radially draw close, thus drive fixture block 6 radially
Close, it is to avoid fixture block 6 is stopped by fixture block positive stop strip 9 in draw process and cannot continue pull piston backward
Bar 1, when the negative pressure in injector syringe 2 reaches to unclamp after requirement control button 10, stage clip 8 reset thus
Driving fixture block gripper shoe 11 to reset, being further driven to fixture block 6 and reset, the fixture block 6 after reset runs into fixture block limit
The stop of position bar 9 maintains current location stable, thus stops the effect at extraneous normal ambient pressure for the piston 5
The lower syringe mouth direction to injector syringe 2 is moved, and therefore ensures that the negative regulation in injector syringe 2,
Then after lancet puncture being entered the degree of depth needing, opening negative pressure control valve 7, tissue or cell are inhaled into pin
In cylinder, extract puncture needle, press control button 10 and promote forward piston rod 1 to push away tissue or the cell of acquirement
Go out to preserve, in order to carry out next step and check.
Last it should be noted that foregoing description is only preferred embodiment of the present utility model, this area
Those of ordinary skill is under enlightenment of the present utility model, without prejudice to the utility model objective and claim
Under the premise of, representing as multiple types can be made, such conversion each falls within protection domain of the present utility model
Within.
Claims (9)
1. a negative pressure puncture device, including injector syringe (2), this injector syringe (2) is internal to be set
Having piston rod (1), described piston rod (1) front end is provided with piston (5), it is characterised in that: described syringe
The syringe mouth of syringe (2) is provided with negative pressure control valve (7), described injector syringe (2) and described piston
Bar is provided with piston rod expansion locking device between (1), the described piston (5) of this piston rod expansion locking device regulation
And the vacuum magnitude between described negative pressure control valve (7).
2. negative pressure puncture device according to claim 1, it is characterised in that: the flexible lock of described piston rod
Determine device and include at least one fixture block (6), described piston rod (1) is provided with radial contraction controlling organization,
Described fixture block (6) is connected with described radial contraction controlling organization, and described injector syringe (2) inwall sets
There is fixture block positive stop strip (9).
3. negative pressure puncture device according to claim 2, it is characterised in that: described piston rod (1)
For cylinder, described radial contraction controlling organization includes the two pieces of fixture blocks being set in parallel in described piston rod (1)
Gripper shoe (11), two pieces of described fixture block gripper shoes (11) are arranged along the length direction of described piston rod (1),
Two pieces of described fixture block gripper shoes (11) lay respectively at the both sides of the axial line of described piston rod (1), at two pieces
The front portion of described fixture block gripper shoe (11) is respectively equipped with described fixture block (6), and described fixture block (6) is radially outward
Pass the barrel of described piston rod (1), between two pieces of described fixture block gripper shoes (11), be provided with stage clip (8),
This stage clip (8) two ends are fixing with two pieces of described fixture block gripper shoes (11) respectively to be connected, described fixture block gripper shoe
(11) rear portion is provided with control button (10), and described control button (10) radially outward passes described piston
The barrel of bar (1).
4. negative pressure puncture device according to claim 1, it is characterised in that: described piston rod (1)
Rear portion be provided with drawing handle (4).
5. negative pressure puncture device according to claim 1, it is characterised in that: described injector syringe (2)
Rear portion be provided with syringe handle (3).
6. negative pressure puncture device according to claim 3, it is characterised in that: two pieces of described fixture blocks support
Respectively being respectively equipped with four described fixture blocks (6) on plate (11), four described fixture blocks (6) are axially arranged on institute
Stating in fixture block gripper shoe (11), the spacing between adjacent described fixture block (6) is equal.
7. negative pressure puncture device according to claim 3, it is characterised in that: described fixture block positive stop strip (9)
Totally two, described fixture block positive stop strip (9) is just to the described note being arranged on described fixture block gripper shoe (11) radial direction
On the inwall of emitter syringe (2).
8. negative pressure puncture device according to claim 3, it is characterised in that: described stage clip (8) is altogether
Two, two described stage clip (8) axial distribution are between two pieces of described fixture block gripper shoes (11).
9. negative pressure puncture device according to claim 3, it is characterised in that: described fixture block (6)
External part is provided with guiding surface, and this guiding surface is towards described fixture block positive stop strip (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252347.XU CN205697950U (en) | 2016-03-28 | 2016-03-28 | Negative pressure puncture device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252347.XU CN205697950U (en) | 2016-03-28 | 2016-03-28 | Negative pressure puncture device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205697950U true CN205697950U (en) | 2016-11-23 |
Family
ID=57311074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620252347.XU Active CN205697950U (en) | 2016-03-28 | 2016-03-28 | Negative pressure puncture device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205697950U (en) |
-
2016
- 2016-03-28 CN CN201620252347.XU patent/CN205697950U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |