CN105877814B - A kind of negative pressure puncture syringe of pressure adjustable - Google Patents
A kind of negative pressure puncture syringe of pressure adjustable Download PDFInfo
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- CN105877814B CN105877814B CN201610188023.9A CN201610188023A CN105877814B CN 105877814 B CN105877814 B CN 105877814B CN 201610188023 A CN201610188023 A CN 201610188023A CN 105877814 B CN105877814 B CN 105877814B
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- syringe
- fixture block
- piston rod
- pressure
- negative pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3498—Valves therefor, e.g. flapper valves, slide valves
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention discloses a kind of negative pressure puncture syringe of pressure adjustable,Including injector syringe,Piston rod 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,The present invention can close negative pressure control valve before puncture,Pull back and take out piston rod and make to form negative pressure in injector syringe,Then it is made to meet that puncture requires and further the vacuum magnitude in locking Syringe injector maintains the negative regulation in Syringe injector using the negative pressure in piston rod expansion locking device regulation injector syringe,Allow an operator to concentrate one's energy to position focus,It effectively prevent influence of the pull syringe piston to negative pressure,Syringe shakes and the scattered influence to caused by positioning of notice,A kind of negative pressure puncture syringe of whole pressure adjustable is lightly attractive in appearance.
Description
Technical field
The present invention relates to technical field of medical instruments, and in particular to a kind of negative pressure puncture syringe of pressure adjustable.
Background technology
Puncture is that puncture is needled into body cavity extraction secretion, tissue, cell to chemically examine, and injects gas or radiography to body cavity
Contrast examination is done in agent, or into body cavity injection of medicine a kind of Clinics, be clinically medical diagnosis on disease or treatment conventional side
Method, have the function that other method is not replaced.At present, existing puncture needle is mainly punctured using common syringe,
Operation is more laborious, and whether the negative pressure value that operator will also constantly notice puncture needle while puncturing is up to standard, can not concentrate essence
Power goes to position focus, tends to the abnormal conditions influence puncture such as syringe shake occur in operation, and conventional puncture needle is born
Press unstable, easily cause at puncture tissue or cell suction is undesirable, it is difficult to meet the needs of clinical pathology plate coating checking, instead
It is multiple to puncture the uncomfortable reaction for being also easy to produce inflammatory reaction and patient, cause the local transfer of operative site bleeding, tumour or cancer cell.
The content of the invention
To solve above technical problem, the present invention provides a kind of negative pressure puncture syringe of pressure adjustable, and the sting device enters
Can forms stable negative pressure before entering patient skin tissue, and can adjust the size of negative pressure as needed.
Technical scheme is as follows：A kind of negative pressure puncture syringe of pressure adjustable, including injector syringe, in the injector syringe
Portion is provided with piston rod, and the piston rod front end is provided with piston, and its key is：The syringe mouth of the injector syringe is provided with negative
Pressure control valve, piston rod expansion locking device, the flexible lock of the piston rod are provided between the injector syringe and the piston rod
Determine the vacuum magnitude between the device regulation piston and the negative pressure control valve；
The piston rod expansion locking device includes at least one fixture block, and the piston rod is cylinder, in the piston rod
Two pieces of fixture block supporting plates are inside provided with along its length, and two pieces of fixture block supporting plates are located at the axial line of the piston rod respectively
Both sides, the fixture block is respectively equipped with the front portion of two pieces of fixture block supporting plates, the fixture block radially outward passes the piston
The barrel of bar, the injector syringe inwall are provided with fixture block positive stop strip, stage clip are provided between two pieces of fixture block supporting plates, should
Stage clip both ends are fixedly connected with two pieces of fixture block supporting plates respectively；
The rear portion of the piston rod is provided with supporting plate radial contraction control device, the supporting plate radial contraction control device bag
Include base, base front portion face is provided with two control swash plates, and the distance between two described control swash plates are from front to back
It is gradually reduced, the front portion of two control swash plates is stretched into the piston rod, and two pieces of fixture block supporting plates are respectively positioned on two
Between the control swash plate, it is described control swash plate it is moved axially forward when, promote the fixture block supporting plate to move radially inwardly；
The rear portion of the base is provided with handle, and the bend radially outward formation of front portion difference of two control swash plates is spacing
Pin, retreat stop block being correspondingly provided with the inwall of the piston rod with the position-limit foot, the position-limit foot is located in front of the retreat stop block,
Same return spring is wound with two control swash plates, the return spring one end is resisted against on the retreat stop block, another
End is resisted against on the handle.
Swash plate is controlled to move axially forward using during present design push handle, so as to promote fixture block supporting plate footpath
To moving inward, now return spring and stage clip are compressed, and fixture block is moved radially inwardly with fixture block supporting plate so as to avoid
Fixture block positive stop strip, now can smoothly pull piston rod makes to form certain negative pressure in injector syringe backward, work as vacuum magnitude
Meet release handle after requiring, return spring, which resets, drives whole supporting plate radial contraction control device to be moved rearwards, when two
Position-limit foot on control swash plate settles out when running into the retreat stop block on piston rod inwall, and now two fixture block supporting plates are in stage clip
Reseting elasticity effect under be moved radially outwards, fixture block is also close to the inwall direction of injector syringe, when fixture block runs into card
Moved after block positive stop strip by limitation, piston rod also therefore can not again axially movable, so as to maintain the negative pressure in injector syringe
It is stable.
As preferred：The front portion of said syringe syringe is connected with pressure monitoring pipe, one end of the pressure monitoring pipe and institute
The injector syringe connection in front of piston is stated, the other end of the pressure monitoring pipe is closed, is provided with the pressure monitoring pipe
Pressure indicates ball, and the pressure monitoring tube wall is provided with pressure scale bar, and the pressure monitoring pipe is transparent material.Using this
During technical scheme pull piston rod, the pressure sign ball in pressure monitoring pipe will move in the presence of negative pressure to low pressure one end,
The size of the negative pressure value in injector syringe can be read by pressure scale bar.
Above-mentioned pressure monitoring pipe is fixed on the outer wall of the injector syringe, and filter membrane is provided with the pressure monitoring pipe,
For the filter membrane close to the front portion of the pressure monitoring pipe, the pressure indicates ball close to the rear portion of the pressure monitoring pipe.Using this
Technical scheme can effectively filter out the solid impurity extracted in thing, prevent solid kind impurity from entering pressure monitoring pipe even by pressure mark
Show that ball wraps, influence the accuracy of reading.
Four fixture blocks are respectively respectively equipped with two pieces of fixture block supporting plates, four fixture blocks are axially arranged on institute
State in fixture block supporting plate, the spacing between the adjacent fixture block is equal.Using the design can conveniently regulation punctures dress as needed
The vacuum magnitude put, to meet different puncture demands.
Above-mentioned fixture block positive stop strip totally two, two fixture block positive stop strip faces are being arranged on two pieces of fixture block supporting plates just
To the injector syringe inwall on.It is attractive in appearance that injector syringe inner profile is arranged on using program fixture block positive stop strip,
Save space.
Above-mentioned stage clip totally two, two stage clips are axially distributed between two pieces of fixture block supporting plates.Using this
The flexible reaction of scheme fixture block is sensitiveer, and reaction is rapider.
The external part of above-mentioned fixture block is provided with guiding surface, and the guiding surface is towards the fixture block positive stop strip.Using the design
Drawing is easy to fixture block to bypass fixture block positive stop strip when taking out piston rod.
Above-mentioned retreat stop block totally two, two retreat stop block faces are arranged on the back interior wall of the piston rod.Using this
Two position-limit foots of scheme can play spacing effect simultaneously, be advantageous to mitigate the work load of single retreat stop block, can effectively extend
The service life of retreat stop block.
Above-mentioned base is round platform.It is more attractive using the design profile.
The rear portion of said syringe syringe is provided with syringe handle.Injector syringe is gripped when conveniently being punctured using the design.
Beneficial effect：Using the beneficial effects of the invention are as follows negative pressure control valve is closed before puncture, pull back and take out piston rod
Make to form negative pressure in injector syringe, now the pressure sign ball in pressure monitoring pipe will be in the presence of negative pressure to low pressure one end
It is mobile, then make it meet to puncture requirement using the negative pressure in piston rod expansion locking device regulation injector syringe and utilize branch
Fagging radial contraction control device locks the vacuum magnitude in Syringe injector so as to maintain the negative regulation in Syringe injector,
The size of the negative pressure value in injector syringe can be read by pressure scale bar, stable negative pressure value can allow an operator to concentrate essence
Power positions focus, effectively prevent the scattered to fixed of influence of the pull syringe piston to negative pressure, syringe shake and notice
Influence caused by position, a kind of negative pressure puncture syringe of whole pressure adjustable are lightly attractive in appearance.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 sectional view.
Embodiment
With reference to embodiment and accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, the negative pressure puncture syringe of a kind of pressure adjustable, including injector syringe 2, the syringe needle
The inside of cylinder 2 is provided with piston rod 1, and the front end of piston rod 1 is provided with piston 5, and the syringe mouth of the injector syringe 2 is provided with negative pressure
Control valve 7, piston rod expansion locking device, the flexible lock of the piston rod are provided between the injector syringe 2 and the piston rod 1
Determine the vacuum magnitude between the device regulation piston 5 and the negative pressure control valve 7.
The piston rod expansion locking device includes at least one fixture block 6, and the piston rod 1 is cylinder, in the piston
Two pieces of fixture block supporting plates 11 are provided with bar 1 along its length, two pieces of fixture block supporting plates 11 are respectively positioned at the piston rod 1
The both sides of axial line, are respectively respectively equipped with four fixture blocks 6 in the front portion of two pieces of fixture block supporting plates 11, described in four difference
Fixture block 6 radially outward passes the barrel of the piston rod 1, and four fixture blocks 6 are axially arranged on the fixture block supporting plate 11
On, the spacing between the adjacent fixture block 6 is equal, and the inwall of injector syringe 2 is provided with fixture block positive stop strip 9, the fixture block
Positive stop strip 9 totally two, two faces of fixture block positive stop strip 9 are arranged on the injection of two pieces of faces of fixture block supporting plate 11
On the inwall of device syringe 2, be provided with two stage clips 8 between two pieces of fixture block supporting plates 11, two both ends of stage clip 8 respectively with
Two pieces of fixture block supporting plates 11 are fixedly connected, and two stage clips 8 are axially distributed between two pieces of fixture block supporting plates 11.
The rear portion of the piston rod 1 is provided with supporting plate radial contraction control device, the supporting plate radial contraction control device
Including base 14, the base 14 is round platform, and the 14 anterior face of base is provided with two control swash plates 12, two controls
The distance between swash plate 12 processed is gradually reduced from front to back, and the front portion of two control swash plates 12 is stretched into the piston rod 1,
Two pieces of fixture block supporting plates 11 are respectively positioned between two control swash plates 12, and the control swash plate 12 is moved axially forward
When, promote the fixture block supporting plate 11 to move radially inwardly, the rear portion of the base 14 is provided with handle 4, and two controls are oblique
Bend radially outward formation position-limit foot is distinguished in the front portion of plate 12, is correspondingly provided with the inwall of the piston rod 1 with the position-limit foot
Retreat stop block 10, the position-limit foot is positioned at the front of retreat stop block 10, and the retreat stop block 10 totally two, two retreat stop blocks 10 are just
Back interior wall to being arranged on the piston rod 1, two described control are wound with same return spring 13, this time on swash plates 12
Position one end of spring 13 is resisted against on the retreat stop block 10, and the other end is resisted against on the handle 4.
The front portion of the injector syringe 2 is connected with pressure monitoring pipe 15, one end of the pressure monitoring pipe 15 and the work
The injector syringe 2 in the front of plug 5 connects, the other end closing of the pressure monitoring pipe 15, is set in the pressure monitoring pipe 15
There is pressure to indicate ball 16, the tube wall of pressure monitoring pipe 15 is provided with pressure scale bar 18, and the pressure monitoring pipe 15 is transparent
Material, the pressure monitoring pipe 15 are fixed on the outer wall of the injector syringe 2, and filter membrane is provided with the pressure monitoring pipe 15
17, for the filter membrane 17 close to the front portion of the pressure monitoring pipe 15, the pressure indicates ball 16 close to the pressure monitoring pipe 15
Rear portion.
From this figure it can be seen that the rear portion of the injector syringe 2 is provided with syringe handle 3, the external part of the fixture block 6 is equal
Provided with guiding surface, the guiding surface is towards the fixture block positive stop strip 9.
The outer wall of the injector syringe 2 is provided with semi-circular tube, and the semi-circular tube is fastened on the outer wall of the injector syringe 2
On, described pressure monitoring pipe 15 is formd between the semi-circular tube and the injector syringe 2, before the injector syringe 2
End face is provided with puncture fluid via, and the pressure monitoring pipe 15 is connected by the puncture fluid via with the injector syringe 2,
The filter membrane 17 is arranged in the puncture fluid via.
In use, installing puncture needle in the syringe mouth of injector syringe 2, negative pressure control valve 7 is closed, forward push handle
4 control swash plates 12 will move axially forward, so as to promote fixture block supporting plate 11 to move radially inwardly, the now He of return spring 13
Stage clip 8 is compressed, and fixture block 6 is moved radially inwardly with fixture block supporting plate 11 so as to avoid fixture block positive stop strip 9, now can be smooth
The piston rod of pull backward 1 make to form certain negative pressure in injector syringe 2, the release handle 4 after vacuum magnitude meets to require,
Return spring 13, which resets, drives whole supporting plate radial contraction control device to be moved rearwards, and is controlled when two spacing on swash plate 12
Pin settles out when running into the retreat stop block 10 on the inwall of piston rod 1, now reseting elasticity of two fixture block supporting plates 11 in stage clip 8
It is moved radially outwards under effect, fixture block 6 is also close to the inwall direction of injector syringe 2, when fixture block 6 runs into fixture block positive stop strip
After 9 by limitation move, piston rod 1 also therefore can not again axially movable, so as to maintain the negative regulation in injector syringe 2,
Pressure can be now read by pressure scale bar and indicates ball position so that it is determined that vacuum magnitude in injector syringe 2, really
The negative pressure protected in injector syringe 2, which meets to puncture, to be required, then lancet puncture to be entered to the depth needed after, opens negative pressure control
Valve 7 processed, tissue or cell are inhaled into syringe, extract puncture needle, and pushing piston rod 1 while push handle 4 forward forward will
The tissue or cell of acquirement, which are released, to be preserved, to carry out next step inspection.
Finally it should be noted that foregoing description is only the preferred embodiments of the present invention, the ordinary skill people of this area
Member on the premise of without prejudice to present inventive concept and claim, can make table as multiple types under the enlightenment of the present invention
Show, such conversion is each fallen within protection scope of the present invention.
Claims (8)
1. a kind of negative pressure puncture syringe of pressure adjustable, including injector syringe (2), internal be provided with of the injector syringe (2) is lived
Stopper rod (1), piston rod (1) front end are provided with piston (5), it is characterised in that：Set in the syringe mouth of the injector syringe (2)
There is negative pressure control valve (7), piston rod expansion locking device is provided between the injector syringe (2) and the piston rod (1), should
Piston rod expansion locking device adjusts the vacuum magnitude between the piston (5) and the negative pressure control valve (7)；
The piston rod expansion locking device includes at least one fixture block (6), and the piston rod (1) is cylinder, in the piston
Two pieces of fixture block supporting plates (11) are provided with along its length in bar (1), and two pieces of fixture block supporting plates (11) are located at the work respectively
The both sides of the axial line of stopper rod (1), the fixture block (6) is respectively equipped with the front portion of two pieces of fixture block supporting plates (11), it is described
Fixture block (6) radially outward passes the barrel of the piston rod (1), and injector syringe (2) inwall is provided with fixture block positive stop strip
(9) stage clip (8), is provided between two pieces of fixture block supporting plates (11), stage clip (8) both ends support with two pieces of fixture blocks respectively
Plate (11) is fixedly connected；
The rear portion of the piston rod (1) is provided with supporting plate radial contraction control device, the supporting plate radial contraction control device bag
Include base (14), the base (14) is round platform, and the anterior face of the base (14) is provided with two control swash plates (12), two
The control swash plate the distance between (12) is gradually reduced from front to back, and the front portions of two control swash plates (12) is stretched into described
In piston rod (1), two pieces of fixture block supporting plates (11) are respectively positioned between two control swash plates (12), the control swash plate
(12) when moved axially forward, the fixture block supporting plate (11) is promoted to move radially inwardly；
The rear portion of the base (14) is provided with handle (4), and the front portion difference of two control swash plates (12) is bend radially outward
Position-limit foot is formed, is correspondingly provided with retreat stop block (10) with the position-limit foot on the inwall of the piston rod (1), the position-limit foot is located at
In front of the retreat stop block (10), same return spring (13), the return spring are wound with two control swash plates (12)
(13) one end is resisted against on the retreat stop block (10), and the other end is resisted against on the handle (4)；
The front portion of the injector syringe (2) is connected with pressure monitoring pipe (15), one end of the pressure monitoring pipe (15) with it is described
The injector syringe (2) connection in front of piston (5), the other end closing of the pressure monitoring pipe (15), the pressure monitoring
Manage and pressure sign ball (16) is provided with (15), pressure monitoring pipe (15) tube wall is provided with pressure scale bar (18), the pressure
Power monitoring pipe (15) is transparent material.
A kind of 2. negative pressure puncture syringe of pressure adjustable according to claim 1, it is characterised in that：The pressure monitoring pipe
(15) it is fixed on the outer wall of the injector syringe (2), filter membrane (17), the filter membrane is provided with the pressure monitoring pipe (15)
(17) close to the front portion of the pressure monitoring pipe (15), the pressure sign ball (16) is after the pressure monitoring pipe (15)
Portion.
A kind of 3. negative pressure puncture syringe of pressure adjustable according to claim 1, it is characterised in that：Two pieces of fixture block branch
Four fixture blocks (6) are respectively respectively equipped with fagging (11), four fixture blocks (6) are axially arranged on the fixture block supporting plate
(11) on, the spacing between the adjacent fixture block (6) is equal.
A kind of 4. negative pressure puncture syringe of pressure adjustable according to claim 1 or 2, it is characterised in that：The fixture block limit
Position bar (9) totally two, two fixture block positive stop strip (9) faces are arranged on the described of two pieces of fixture block supporting plate (11) faces
On the inwall of injector syringe (2).
A kind of 5. negative pressure puncture syringe of pressure adjustable according to claim 1, it is characterised in that：The stage clip (8) is altogether
Two, two stage clips (8) are axially distributed between two pieces of fixture block supporting plates (11).
A kind of 6. negative pressure puncture syringe of pressure adjustable according to claim 1, it is characterised in that：The fixture block (6)
External part is provided with guiding surface, and the guiding surface is towards the fixture block positive stop strip (9).
A kind of 7. negative pressure puncture syringe of pressure adjustable according to claim 1, it is characterised in that：The retreat stop block (10)
Totally two, two retreat stop block (10) faces are arranged on the back interior wall of the piston rod (1).
A kind of 8. negative pressure puncture syringe of pressure adjustable according to claim 1, it is characterised in that：The injector syringe
(2) rear portion is provided with syringe handle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610188023.9A CN105877814B (en) | 2016-03-28 | 2016-03-28 | A kind of negative pressure puncture syringe of pressure adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610188023.9A CN105877814B (en) | 2016-03-28 | 2016-03-28 | A kind of negative pressure puncture syringe of pressure adjustable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105877814A CN105877814A (en) | 2016-08-24 |
| CN105877814B true CN105877814B (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610188023.9A Active CN105877814B (en) | 2016-03-28 | 2016-03-28 | A kind of negative pressure puncture syringe of pressure adjustable |
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| CN (1) | CN105877814B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6955010B2 (en) | 2016-08-30 | 2021-10-27 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Injection device |
| CN109833530A (en) * | 2019-03-08 | 2019-06-04 | 郑州大学第一附属医院 | Medical manual vomica negative-pressure ward drainage device |
| CN115337083A (en) * | 2021-05-13 | 2022-11-15 | 中国医学科学院北京协和医院 | Medical instrument assembly |
| CN113456173A (en) * | 2021-07-01 | 2021-10-01 | 吉林大学 | Cerebral nerve and blood vessel thrombus removing device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2627087A1 (en) * | 1988-02-12 | 1989-08-18 | Plancon J | Manual withdrawal apparatus, in particular for suction removal of fat (liposuction) and its reinjection |
| US7476215B2 (en) * | 2005-09-21 | 2009-01-13 | Choi Fat Lam | Automatic retractable safety syringe |
| CN101143096B (en) * | 2007-09-24 | 2011-08-31 | 福州健立莱医疗器械有限公司 | Pre-negative pressure suction type deep artery and venous silk-guiding introducing device |
| KR20100099788A (en) * | 2009-03-04 | 2010-09-15 | 김래범 | Fat inhalation device |
| EP2570145A1 (en) * | 2011-09-16 | 2013-03-20 | Becton Dickinson France | Plunger rod with dose setting means and injection device |
| WO2014005058A1 (en) * | 2012-06-28 | 2014-01-03 | Aubrey Group, Inc. | Novel auto-aspirating syringe |
| WO2014199478A1 (en) * | 2013-06-13 | 2014-12-18 | テルモ・クリニカルサプライ株式会社 | Suction syringe |
| CN205697851U (en) * | 2016-03-28 | 2016-11-23 | 西南医科大学附属医院 | Adjustable negative-pressure sting device |
-
2016
- 2016-03-28 CN CN201610188023.9A patent/CN105877814B/en active Active
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| CN105877814A (en) | 2016-08-24 |
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