CN205697851U - Adjustable negative-pressure sting device - Google Patents
Adjustable negative-pressure sting device Download PDFInfo
- Publication number
- CN205697851U CN205697851U CN201620248686.0U CN201620248686U CN205697851U CN 205697851 U CN205697851 U CN 205697851U CN 201620248686 U CN201620248686 U CN 201620248686U CN 205697851 U CN205697851 U CN 205697851U
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- China
- Prior art keywords
- pressure
- piston rod
- syringe
- fixture block
- pieces
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Abstract
nullThe open a kind of adjustable negative-pressure sting device of this utility model，Including injector syringe，Piston rod it is provided with 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，This 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 the negative pressure in piston rod expansion locking device regulation injector syringe is utilized to make it meet the negative regulation in the vacuum magnitude punctured in requirement locking pin barrel syringe the most further maintains Syringe injector，Allow an operator to concentrate one's energy to position focus，Effectively prevent the impact on negative pressure of the pull syringe piston、The impact that location is caused by the dispersion of syringe shake and attention，Whole adjustable negative-pressure sting device is the most attractive in appearance.
Description
Technical field
This utility model relates to technical field of medical instruments, is specifically related to a kind of adjustable negative-pressure sting device.
Background technology
Puncture be puncture needle is thrust body cavity extraction secretions, tissue, cell are chemically examined, and inject gas to body cavity
Body or contrast agent do contrast examination, or a kind of Clinics of injection of medicine in body cavity, are diseases clinically
Diagnosis or the common method for the treatment of, have the effect that additive method is not replaced.At present, existing puncture needle
Main using common syringe to puncture, operation is more laborious, operator while puncturing also otherwise
The disconnected negative pressure value noticing puncture needle is the most up to standard, it is impossible to concentrates one's energy to position focus, tends in operation
Occur that the abnormal conditions impacts such as syringe shake puncture, and the puncture needle negative pressure of routine is unstable, easily causes
At puncture, tissue or cell suction are undesirable, it is difficult to meet the needs of clinical pathology plate coating checking, repeated localised puncture
It is easily generated the uncomfortable reaction of inflammatory reaction and patient, causes operative site hemorrhage, tumor or the local of cancerous cell
Transfer.
Utility model content
For solving above technical problem, this utility model provides a kind of adjustable negative-pressure sting device, this puncture
Device just can form stable negative pressure before entering patient skin tissue, and can regulate the big of negative pressure as required
Little.
Technical scheme is as follows: a kind of adjustable negative-pressure sting device, including injector syringe, and this syringe needle
Cylinder is internal is provided with piston rod, and described piston rod front end is provided with piston, and it it is critical only that: described injector syringe
Syringe mouth be provided with negative pressure control valve, be provided with piston rod between described injector syringe and described piston rod and stretch
Contracting locking device, this piston rod expansion locking device regulates bearing between described piston and described negative pressure control valve
Pressure size；
Described piston rod expansion locking device includes that at least one fixture block, described piston rod are cylinder, described
Being provided with two pieces of fixture block gripper shoes in piston rod along its length, two pieces of described fixture block gripper shoes lay respectively at described
The both sides of the axial line of piston rod, are respectively equipped with described fixture block, institute in the front portion of two pieces of described fixture block gripper shoes
Stating fixture block and radially outward pass the barrel of described piston rod, it is spacing that described injector syringe inwall is provided with fixture block
Bar, is provided with stage clip between two pieces of described fixture block gripper shoes, and these stage clip two ends support with two pieces of described fixture blocks respectively
Plate is fixing to be connected；
The rear portion of described piston rod is provided with gripper shoe radial contraction and controls device, and this gripper shoe radial contraction controls
Device includes base, and described base front portion just controls swash plates to being provided with two, two described control swash plates it
Between distance be gradually reduced from front to back, the front portion of two described control swash plates is stretched in described piston rod, two
Fixture block gripper shoe described in block is respectively positioned between two described control swash plates, and described control swash plate is moved axially forward
Time, promote described fixture block gripper shoe to move radially inwardly；
The rear portion of described base is provided with handle, the front portion of two described control swash plates bend radially outward shape respectively
Become position-limit foot, the inwall of described piston rod is correspondingly provided with described position-limit foot retreat stop block, described position-limit foot position
In described retreat stop block front, two described control swash plates are wound with same return spring, this return spring
One end is resisted against on described retreat stop block, and the other end is resisted against on described handle.
Control swash plate when using present design push handle will move axially forward, thus promote fixture block to prop up
Fagging moves radially inwardly, and now return spring and stage clip are all compressed, fixture block with fixture block gripper shoe radially to
Interior movement thus fixture block positive stop strip can be avoided, now can be in pull piston rod makes injector syringe the most backward
Forming certain negative pressure, release handle after vacuum magnitude meets requirement, return spring resets and drives whole
Fagging radial contraction controls device and is moved rearwards by, when two position-limit foots controlled on swash plate run into piston rod inwall
On retreat stop block time settle out, now two fixture block gripper shoes under the reseting elasticity effect of stage clip radially
Being displaced outwardly, fixture block is also close to the inwall direction of injector syringe, quilt after fixture block runs into fixture block positive stop strip
Limiting motion, piston rod the most therefore can not the most axially movable, thus the negative pressure in maintaining injector syringe is steady
Fixed.
As preferably: there is pressure monitoring pipe anterior connection of said syringe syringe, the one of this pressure monitoring pipe
End connects with the described injector syringe in described piston front, and the other end of this pressure monitoring pipe is closed, described
Being provided with pressure in pressure monitoring pipe and indicate ball, described pressure monitoring tube wall is provided with pressure scale bar, described
Pressure monitoring pipe is transparent material.When using the technical program pull piston rod, the pressure in pressure monitoring pipe
Indicate ball to move to low pressure one end under the effect of negative pressure, can read injector syringe by pressure scale bar
The size of interior negative pressure value.
Above-mentioned pressure monitoring pipe is fixed on the outer wall of described injector syringe, is provided with in described pressure monitoring pipe
Filter membrane, this filter membrane is near the front portion of described pressure monitoring pipe, and described pressure indicates ball near described pressure monitoring
The rear portion of pipe.Use the technical program can effectively filter out the solid impurity in extraction thing, prevent solid kind impurity
Pressure is even indicated bag and wraps by entrance pressure monitoring pipe, affects the degree of accuracy of reading.
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, two described fixture block positive stop strips just prop up being arranged on two pieces of described fixture blocks
Fagging just to described injector syringe inwall on.Program fixture block positive stop strip is used to be arranged on syringe needle
Cylinder inner profile 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.
Above-mentioned retreat stop block totally two, two described retreat stop blocks are just to the back interior wall being arranged on described piston rod.
Use two position-limit foots of this programme can simultaneously work as spacing effect, be conducive to alleviating the work of single retreat stop block
Burden, can effectively extend the service life of retreat stop block.
Above-mentioned base is round platform.Use the design profile more attractive.
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.
Beneficial effect: using the beneficial effects of the utility model is closedown negative pressure control valve before puncture, backward
Drawing to take out in piston rod makes injector syringe and form negative pressure, now the sign of the pressure in pressure monitoring pipe ball will be negative
Move to low pressure one end under the effect of pressure, in then utilizing piston rod expansion locking device regulation injector syringe
Negative pressure make it meet to puncture and require and utilize gripper shoe radial contraction to control in device locking pin barrel syringe
Vacuum magnitude thus negative regulation in maintaining Syringe injector, can read syringe needle by pressure scale bar
The size of the negative pressure value in Tong, stable negative pressure value can allow an operator to concentrate one's energy to position focus, effectively keep away
Exempt from what location was caused by pull syringe piston by the dispersion of impact, syringe shake and the attention of negative pressure
Impact, whole adjustable negative-pressure sting device is the most attractive in appearance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the sectional view of Fig. 1.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of adjustable negative-pressure sting device, including injector syringe 2, this injection
Device syringe 2 is internal is provided with piston rod 1, and described piston rod 1 front end is provided with piston 5, described injector syringe 2
Syringe mouth be provided with negative pressure control valve 7, be provided with piston between described injector syringe 2 and described piston rod 1
Bar expansion locking device, the described piston of this piston rod expansion locking device regulation 5 and described negative pressure control valve 7
Between vacuum magnitude.
Described piston rod expansion locking device includes at least one fixture block 6, and described piston rod 1 is cylinder, in institute
Being provided with two pieces of fixture block gripper shoes 11 in stating piston rod 1 along its length, two pieces of described fixture block gripper shoes 11 are respectively
Being positioned at the both sides of the axial line of described piston rod 1, anterior two pieces of described fixture block gripper shoes 11 respectively sets respectively
Having four described fixture blocks 6, four fixture blocks 6 the most described radially outward pass the barrel of described piston rod 1, and four
Individual described fixture block 6 is axially arranged in described fixture block gripper shoe 11, the spacing between adjacent described fixture block 6
Equal, described injector syringe 2 inwall is provided with fixture block positive stop strip 9, described fixture block positive stop strip 9 totally two,
Two described fixture block positive stop strips 9 just to be arranged on two pieces of described fixture block gripper shoes 11 just to described syringe needle
On the inwall of cylinder 2, between two pieces of described fixture block gripper shoes 11, it is provided with two stage clips 8, two described stage clips 8
Two ends are fixed with two pieces of described fixture block gripper shoes 11 respectively and are connected, and two described stage clip 8 axial distribution are at two pieces
Between described fixture block gripper shoe 11.
The rear portion of described piston rod 1 is provided with gripper shoe radial contraction and controls device, this gripper shoe radial contraction control
Device processed includes base 14, and described base 14 is round platform, and described base 14 front portion is just to being provided with two controls
Swash plate 12 processed, the distance between two described control swash plates 12 is gradually reduced from front to back, two described controls
The front portion of swash plate 12 is stretched in described piston rod 1, and two pieces of described fixture block gripper shoes 11 are respectively positioned on described in two
Control, between swash plate 12, when described control swash plate 12 is moved axially forward, to promote described fixture block gripper shoe 11
Moving radially inwardly, the rear portion of described base 14 is provided with handle 4, the forward part of two described control swash plates 12
The most bend radially outward formation position-limit foot, the inwall of described piston rod 1 is only correspondingly provided with described position-limit foot
Moving back block 10, described position-limit foot is positioned at described retreat stop block 10 front, described retreat stop block 10 totally two, two institutes
State limited block 10 just to being arranged on the back interior wall of described piston rod 1, two described control swash plates 12 twine
Being wound with same return spring 13, this return spring 13 one end is resisted against on described retreat stop block 10, the other end
It is resisted against on described handle 4.
There is pressure monitoring pipe 15 anterior connection of described injector syringe 2, one end of this pressure monitoring pipe 15 with
The described injector syringe 2 in described piston 5 front connects, and the other end of this pressure monitoring pipe 15 is closed, institute
Being provided with pressure in stating pressure monitoring pipe 15 and indicate ball 16, described pressure monitoring pipe 15 tube wall is provided with pressure and carves
Degree bar 18, described pressure monitoring pipe 15 is transparent material, and described pressure monitoring pipe 15 is fixed on described injection
On the outer wall of device syringe 2, being provided with filter membrane 17 in described pressure monitoring pipe 15, this filter membrane 17 is near described pressure
The front portion of power monitoring pipe 15, described pressure indicates ball 16 near the rear portion of described pressure monitoring pipe 15.
From this figure it can be seen that the rear portion of described injector syringe 2 is provided with syringe handle 3, described fixture block 6
External part is equipped with guiding surface, and this guiding surface is towards described fixture block positive stop strip 9.
The outer wall of described injector syringe 2 is provided with semi-circular tube, and this semi-circular tube is fastened on described injector syringe 2
Outer wall on, define described pressure monitoring pipe 15, institute between this semi-circular tube and described injector syringe 2
The front end face stating injector syringe 2 is provided with puncture fluid via, and described pressure monitoring pipe 15 is by described puncture
Liquid via connects with described injector syringe 2, and described filter membrane 17 is arranged in this puncture fluid via.
During use, the syringe mouth of injector syringe 2 is installed puncture needle, close negative pressure control valve 7, forward
Push handle 4 controls swash plate 12 and will move axially forward, thus promotes fixture block gripper shoe 11 radially-inwardly
Mobile, now return spring 13 and stage clip 8 are all compressed, and fixture block 6 is with fixture block gripper shoe 11 radially-inwardly
Move thus fixture block positive stop strip 9 can be avoided, now can make injector syringe 2 by pull piston rod 1 the most backward
The negative pressure that interior formation is certain, release handle 4 after vacuum magnitude meets requirement, return spring 13 resets and drives
Whole gripper shoe radial contraction controls device and is moved rearwards by, when two position-limit foots controlled on swash plate 12 run into work
Settle out during retreat stop block 10 on stopper rod 1 inwall, now two fixture block gripper shoe 11 answering at stage clip 8
Being moved radially outwards under the elastic force effect of position, fixture block 6 is also close to the inwall direction of injector syringe 2, when
Fixture block 6 runs into after fixture block positive stop strip 9 by restriction campaign, piston rod 1 the most therefore can not the most axially movable,
Thus maintain the negative regulation in injector syringe 2, now can read pressure by pressure scale bar and indicate ball
Position is so that it is determined that vacuum magnitude in injector syringe 2, it is ensured that the negative pressure in injector syringe 2 is full
Foot punctures requirement, after then lancet puncture being entered the degree of depth needed, opens negative pressure control valve 7, tissue or
Cell is inhaled in syringe, extracts puncture needle, and pushing forward forward piston rod 1 while push handle 4 will
The tissue obtained or cell are released and are preserved, 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 this utility model objective and claim
Under premise, representing as can making multiple types, such conversion each falls within protection domain of the present utility model
Within.
Claims (10)
1. an adjustable negative-pressure sting device, including injector syringe (2), this injector syringe (2)
Inside is provided with piston rod (1), and described piston rod (1) front end is provided with piston (5), it is characterised in that: described
The syringe mouth of injector syringe (2) is provided with negative pressure control valve (7), described injector syringe (2) and institute
Stating and be provided with piston rod expansion locking device between piston rod (1), the regulation of this piston rod expansion locking device is described
Vacuum magnitude between piston (5) and described negative pressure control valve (7)；
Described piston rod expansion locking device includes that at least one fixture block (6), described piston rod (1) are cylinder,
Being provided with two pieces of fixture block gripper shoes (11) in described piston rod (1) along its length, two pieces of described fixture blocks prop up
Fagging (11) lays respectively at the both sides of the axial line of described piston rod (1), two pieces of described fixture block gripper shoes
(11) front portion is respectively equipped with described fixture block (6), and described fixture block (6) radially outward passes described piston rod
(1) barrel, described injector syringe (2) inwall is provided with fixture block positive stop strip (9), two pieces of described cards
Being provided with stage clip (8) between block gripper shoe (11), this stage clip (8) two ends support with two pieces of described fixture blocks respectively
Plate (11) is fixing to be connected；
The rear portion of described piston rod (1) is provided with gripper shoe radial contraction and controls device, this gripper shoe radial contraction
Control device include base (14), described base (14) front portion just to be provided with two control swash plate (12),
Distance between two described control swash plates (12) is gradually reduced from front to back, two described control swash plates (12)
Front portion stretch into described piston rod (1) in, two pieces of described fixture block gripper shoes (11) are respectively positioned on two described controls
Between swash plate processed (12), when described control swash plate (12) is moved axially forward, described fixture block is promoted to support
Plate (11) moves radially inwardly；
The rear portion of described base (14) is provided with handle (4), the forward part of two described control swash plates (12)
The most bend radially outward formation position-limit foot, the inwall of described piston rod (1) is correspondingly provided with described position-limit foot
Retreat stop block (10), described position-limit foot is positioned at described retreat stop block (10) front, two described control swash plates (12)
On be wound with same return spring (13), this return spring (13) one end is resisted against described retreat stop block (10)
On, the other end is resisted against on described handle (4).
Adjustable negative-pressure sting device the most according to claim 1, it is characterised in that: described syringe
There is pressure monitoring pipe (15) the anterior connection of syringe (2), and one end of this pressure monitoring pipe (15) is with described
Described injector syringe (2) connection in piston (5) front, another end seal of this pressure monitoring pipe (15)
Closing, be provided with pressure and indicate ball (16) in described pressure monitoring pipe (15), described pressure monitoring pipe (15) is managed
Wall is provided with pressure scale bar (18), and described pressure monitoring pipe (15) is transparent material.
Adjustable negative-pressure sting device the most according to claim 2, it is characterised in that: described pressure is supervised
Test tube (15) is fixed on the outer wall of described injector syringe (2), sets in described pressure monitoring pipe (15)
Having filter membrane (17), this filter membrane (17) is near the front portion of described pressure monitoring pipe (15), and described pressure indicates
Ball (16) is near the rear portion of described pressure monitoring pipe (15).
Adjustable negative-pressure sting device the most according to claim 1, it is characterised in that: two pieces of described cards
Respectively being respectively equipped with four described fixture blocks (6) in block gripper shoe (11), four described fixture blocks (6) set vertically
Putting on described fixture block gripper shoe (11), the spacing between adjacent described fixture block (6) is equal.
Adjustable negative-pressure sting device the most according to claim 1 and 2, it is characterised in that: described card
Block positive stop strip (9) totally two, two described fixture block positive stop strips (9) are just propped up being arranged on two pieces of described fixture blocks
Fagging (11) just to described injector syringe (2) inwall on.
Adjustable negative-pressure sting device the most according to claim 1, it is characterised in that: described stage clip (8)
Totally two, two described stage clip (8) axial distribution are between two pieces of described fixture block gripper shoes (11).
Adjustable negative-pressure sting device the most according to claim 1, it is characterised in that: described fixture block (6)
External part be provided with guiding surface, this guiding surface is towards described fixture block positive stop strip (9).
Adjustable negative-pressure sting device the most according to claim 1, it is characterised in that: described retreat stop block
(10) totally two, two described limited blocks (10) are just to the back interior wall being arranged on described piston rod (1).
Adjustable negative-pressure sting device the most according to claim 1, it is characterised in that: described base (14)
For round platform.
Adjustable negative-pressure sting device the most according to claim 1, it is characterised in that: described injection
The rear portion of device syringe (2) is provided with syringe handle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620248686.0U CN205697851U (en) | 2016-03-28 | 2016-03-28 | Adjustable negative-pressure sting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620248686.0U CN205697851U (en) | 2016-03-28 | 2016-03-28 | Adjustable negative-pressure sting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205697851U true CN205697851U (en) | 2016-11-23 |
Family
ID=57312548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620248686.0U Expired - Fee Related CN205697851U (en) | 2016-03-28 | 2016-03-28 | Adjustable negative-pressure sting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205697851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877814A (en) * | 2016-03-28 | 2016-08-24 | 西南医科大学附属医院 | Negative pressure puncture needle cylinder with adjustable pressure |
-
2016
- 2016-03-28 CN CN201620248686.0U patent/CN205697851U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877814A (en) * | 2016-03-28 | 2016-08-24 | 西南医科大学附属医院 | Negative pressure puncture needle cylinder with adjustable pressure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20200328 |