CN109998567A - A kind of automatic needle protection-closing integration vim and vigour acquisition needle - Google Patents
A kind of automatic needle protection-closing integration vim and vigour acquisition needle Download PDFInfo
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- CN109998567A CN109998567A CN201910418770.0A CN201910418770A CN109998567A CN 109998567 A CN109998567 A CN 109998567A CN 201910418770 A CN201910418770 A CN 201910418770A CN 109998567 A CN109998567 A CN 109998567A
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- Prior art keywords
- needle
- syringe
- outer tube
- vim
- vigour
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- 230000010354 integration Effects 0.000 title claims abstract description 43
- 206010058109 Hangnail Diseases 0.000 claims abstract description 34
- 239000012528 membrane Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 14
- 230000000151 anti-reflux effect Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 6
- 210000004369 blood Anatomy 0.000 abstract description 51
- 239000008280 blood Substances 0.000 abstract description 51
- 206010061213 Iatrogenic injury Diseases 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 11
- 238000005192 partition Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 238000010241 blood sampling Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 208000012266 Needlestick injury Diseases 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002906 medical waste Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003146 anticoagulant agent Substances 0.000 description 2
- 229940127219 anticoagulant drug Drugs 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 206010014418 Electrolyte imbalance Diseases 0.000 description 1
- 241001149930 Protura <class> Species 0.000 description 1
- 208000004756 Respiratory Insufficiency Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001194 anti-hemostatic effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002640 oxygen therapy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 201000004193 respiratory failure Diseases 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150351—Caps, stoppers or lids for sealing or closing a blood collection vessel or container, e.g. a test-tube or syringe barrel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
- A61B5/150641—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
Abstract
The present invention relates to a kind of automatic needle protection-closing integration vim and vigour to acquire needle, is equipped with syringe, piston, push-pull rod, syringe needle and outer tube；Syringe includes cylinder seat and syringe main body；Syringe needle includes the needle holder that needle core and outer wall are equipped with limit fin；It is not used and under assembled state, outer tube distal section is located at the outside of needle holder and cylinder seat, outer tube proximal section is located at the outside of syringe main body, and the distal end of needle core stretches out in the outside of outer tube distal openings, and the proximal end of syringe stretches out in the outside of outer tube proximal openings；When applying thrust to outer tube, outer tube is slided with respect to syringe；Leakproof film is equipped with inside distal section at nearly distal openings, and is located at limit fin proximal end side and is equipped with hangnail fin, distal section is equipped with block with the position that proximal section is mutually connected；The vim and vigour acquisition needle is additionally provided with membrane switch or automotive.The present invention can utmostly avoid iatrogenic injury, prevent blood sample pollution environment and improve the accuracy of testing result.
Description
Technical field
The present invention relates to the field of medical instrument technology, specifically, be related to a kind of automatic needle protect-close all-in-one blood
Gas acquires needle.
Background technique
Arterial blood gas analysis (Arterial Blood Gas Analysis, ABGA) refers to by human body artery blood
Partial pressure of oxygen P (CO2) and carbon dioxide partial pressure P (CO2), the indexs such as pH value and electrolyte measure, and then to human body respiration function
Corresponding assessment can be made with blood acid-base balance situation, this index can objectively reflect the property and journey of patient respiratory failure
Degree has important meaning to giving oxygen therapy in clinic, adjusting mechanical ventilation parameters and correcting acid, alkali, electrolyte imbalance.
After being taken a blood sample in the prior art using vim and vigour acquisition needle, usually it is useless in medical treatment first to pull out syringe needle abandoning manually by medical staff
Object case reuses seal cap and blocks cylinder seat, and on the one hand this mode of operation is easy to stab operator, lead to the person of being wounded by stabbing
Infected patient germ causes physical and mental injury to medical staff, be on the other hand also easy to cause in syringe blood sample incorporation through syringe needle into
The air entered, causes detection error, in another aspect, blood is also possible to exosmose from syringe needle, seriously pollutes ambient enviroment.Also having first makes
The needle point position of syringe needle is blocked with rubber plug, then pulls out syringe needle and abandons in clinical waste case, and the operation of cylinder seat is blocked using seal cap
Mode, but there are air that the possibility of vim and vigour sample is mixed into via syringe needle, and rubber plug is easy to fall off loses and imitative stab and seal
Function.
Patent document CN109106378A, publication date 2019.01.01 disclose a kind of arterial blood pumping that can completely cut off air
Blood device, hemospast are equipped with syringe, connector, piston push rod, piston, syringe needle, and piston is fixed on the front end of piston push rod, piston and
Piston push rod is packed into from the tail end of syringe to syringe, and piston and syringe sealing cooperate, and connector is fixed on the front end face of syringe
On, syringe needle is mounted on connector；Partition is equipped in the front end of the syringe, partition and syringe sealing cooperate, and partition is equipped with inclined
Heart hole is outward extended with rotation button relative to arc groove is equipped at partition on the circumferential surface of syringe on the circumferential surface of partition, rotation button from
It is pierced by arc groove, limit plate is symmetrically arranged on the inner wall of syringe, partition is limited in the front end of syringe by limit plate, rotation
Partition makes the nipple orifice of through-hole and syringe front end on rotating barrier misplace.Although the device can fast implement vim and vigour sample and sky
Air bound is exhausted, but since rotation button is pierced by out of arc groove, enters syringe by arc groove crack there are air and is mixed into blood
May, airtightness is difficult to ensure, is required preparation process high；And syringe needle is exposed to outside after taking a blood sample, and is existed and is stabbed medical staff
Risk；Syringe needle is removed after blood sampling, the blood at this moment remained within a fitting may drip and pollute environment.
Patent document CN208243562U, day for announcing 2018.12.18 disclose a kind of safety-type arteria hemostix, including
Needle tubing, piston, the syringe needle with needle handle, needle cap and needle guard sleeve pipe；Needle cap is connected at the needle handle and by the needle
Head cladding is inside it；The needle guard sleeve pipe includes cylindrical casing and left folding lid and right folding lid in described sleeve pipe；Institute
It states casing to be set on the needle handle, and is respectively equipped with left slideway and right slideway in the corresponding left and right sidewall of described sleeve pipe；Institute
The sliding for stating the both ends side-walls of left folding lid and right folding lid blocks in the sub- slideway being respectively clamped into left slideway and right slideway；The cunning
Dynamic card connects the left folding lid and right folding lid by movable axis；The top of the left folding lid is equipped with a circular rubber stopper.The dress
Although setting has the function of that certain sample that prevents from taking a blood sample enters air and medical staff is avoided to be wounded by stabbing, left folding lid and the right side
The design of cover-folding type interferes puncture, and the operation of arteriopuncture blood sampling needs certain technology content, lacks in order to avoid generating
It falls into sample and prevents complication, therefore the design existing defects that this interference punctures, and complicated operation.
Patent document CN201441375U, day for announcing 2010.04.28 disclose a kind of arteria hemostix comprising outer
Set, piston, core bar, syringe needle, piston are mounted on core bar front, and housing front end is equipped with the needle holder with conehead and screw thread, outside syringe needle
Equipped with a protective cap, piston is axially arranged with a through-hole, and the sealing-plug of a permeable watertight is housed in through-hole, is additionally provided with one and syringe needle
The matched sealing cap of seat, be equipped in described sealing cap a vertebra headgear and one with the plug of needle holder channel cooperation, vertebra head
It is arranged with hexagonal inner hole.Use process is: hemostix core bar is pulled to scale to be preset；Artery is carried out with blood collection needles to wear
Thorn, under the pressure of human body artery, blood is automatically into housing, the sealing of air permeable watertight from piston in housing
Plug discharge, after acquisition blood reaches default scale, blood sample automatic plugging piston；Blood collection needles are pulled up from patient, are inserted at once
Enter rubber plugging block；Handle patient site of puncture；Blood collection needles are pulled up from hemostix, are rapidly covered sealing cap close
Envelope, then inspection.It is contacted although the device can avoid blood sample with air, the operation that rubber plugging block blocks syringe needle may still be led
It causes air to enter hemostix tube body, influences the accuracy rate of testing result.
To sum up, need it is a kind of can effectively avoid iatrogenic injury, avoid blood sample from polluting environment, quickly, easy, efficiently
Realization vim and vigour sample and air exclusion vim and vigour acquisition device.
Summary of the invention
The purpose of the present invention is aiming at the shortcomings in the prior art, provide it is a kind of can effectively avoid iatrogenic injury, avoid
Blood sample pollutes environment, quick, easy, the effective vim and vigour acquisition device for realizing vim and vigour sample and air exclusion.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of automatic needle protection-closing integration vim and vigour acquisition needle, is equipped with syringe, piston, push-pull rod and syringe needle, also sets
There is outer tube；The syringe includes cylinder seat and syringe main body；The syringe needle includes that needle core and outer wall are equipped with limit fin
Needle holder；The outer tube is socketed in the outside of needle holder and syringe, and the distal end end face of the outer tube is equipped with distal end
Opening, proximal face are equipped with proximal openings, and the outer tube includes distal section and proximal section, unused and assembled state
Under, the distal end of the needle core stretches out in the outside of distal openings, and the proximal end of the syringe stretches out in the outside of proximal openings,
The distal section is located at the outside of needle holder and cylinder seat, and the proximal section is located at the outside of syringe main body；Not to
Outer tube and syringe described in when outer tube applies thrust distally is opposing stationary, distally to outer tube application
Thrust when described in outer tube relative to syringe slide；It is equipped with and resists close to the position of distal openings inside the distal section
The leakproof film to backflow, the inner wall that the distal section is internally located at limit fin proximal end side are equipped with several hangnail fins,
The distal section is equipped with block with the position that proximal section is mutually connected, described when distally pushing outer tube
Limit fin is crossed hangnail fin one by one and is finally limited between the hangnail fin of most proximal end and block, at this time the point of needle core
End is no longer exposed positioned at the proximal end side of leakproof film.
As a preference of the invention, the automatic needle protection-closing integration vim and vigour acquisition needle is equipped with anti-
The membrane switch to backflow, the membrane switch are located in the channel inside syringe.
It is highly preferred that the membrane switch is located at the position that cylinder seat is connected with syringe main body.
As another preference of the invention, the membrane switch is "-" type, the cross or anti-reflux valve of Y type.
As another preference of the invention, the distal end of the syringe is assembled by the proximal end of connector and syringe needle；It is described
Its wall of connector be equipped with through-hole, automotive is equipped in the through-hole, the top surface of the automotive is inclined plane shape；
When distally pushing outer tube, the block touches the upper surface of automotive, will be motor-driven in sliding process
Switch presses in connector and in the matched groove of the automotive, and then by the channel enclosed of connector.
As another preference of the invention, the limit fin is completely around one week rib of needle holder
Item, the plane where the limit fin are parallel with the cross section of needle holder；Or the limit fin has several, this
The plane that several a little limit fins are arranged and constituted around needle holder is parallel with the cross section of needle holder.
As another preference of the invention, each hangnail fin is one completely enclosed around distal section inner wall one
Cord, the plane where each hangnail fin is parallel with the cross section of outer tube, these several hangnail fins are by distal end to close
End is arranged successively；Or these several hangnail fin rings are arranged around the inner wall of distal section.
As another preference of the invention, the block is circular baffle arrangement or constitutes circular baffle
Structure, the plane where the block is parallel with the cross section of outer tube, and there are centre bore, the center in the block center
The diameter in hole is greater than the diameter of cylinder seat, and is greater than the diameter at position of the needle holder in addition to limiting fin, but is less than needle holder
Limit the diameter at fin position.
As another preference of the invention, the inner wall of the proximal section is contacted with the outer wall of syringe main body；Or
Friction guide pad is equipped between the inner wall of the proximal section and the outer wall of syringe main body.
As another preference of the invention, the leakproof film is "-" type, the cross or anti-reflux valve of Y type.
The invention has the advantages that:
1, apparatus of the present invention are equipped with outer tube, and outer tube is equipped with leakproof film, hangnail fin and block, and needle holder is equipped with limit
Position fin, therefore after the withdraw of the needle of taking a blood sample, it can be by pushing outer tube quickly to pull out syringe needle and by needle enclosure in outer to needle point direction
Inside pipe casing is not susceptible to the event of needlestick injuries medical staff, moreover it is possible to which anti-Hemostatic Oral Liquid is dripped from needle point, is avoided and is made to environment
At pollution.
2, the design of outer tube of the present invention and its each component shape and structure keeps the operation for pulling out syringe needle very smooth, behaviour
Make simple and efficient.
3, the membrane switch of apparatus of the present invention has anti-reflux effect, therefore syringe main body can be closed immediately after blood sampling
Interior blood sample, farthest prevents air from entering, it is ensured that the accuracy of testing result.And the membrane switch shape and position
Design rationally, will not influence the fluency that blood enters syringe.
4, the automotive of apparatus of the present invention may be implemented during pulling out syringe needle, synchronous to block leading in connector
Road, and then prevent air from entering the blood sample in syringe, it is ensured that the accuracy of testing result.And the automotive structure letter
Single, preparation process difficulty is low, at low cost.
5, the device of the invention external structure is regular, arteriopuncture will not be interfered to take a blood sample, and blood collection procedure is coherent, and without independent
Component, good integrity are not easy to fall loss.
Generally speaking, the device of the invention can utmostly avoid iatrogenic injury, prevent blood sample from polluting environment, and
It is easy, rapid, efficient to completely cut off air, improves the accuracy of testing result.
Detailed description of the invention
Attached drawing 1 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 1 is not used and under assembled state
Cross-sectional view.
Attached drawing 2 is the cross-sectional view under automatic needle protection-closing integration vim and vigour acquisition needle disassembled form of embodiment 1.
Attached drawing 3 is the membrane switch structural schematic diagram of embodiment 1.
Attached drawing 4 is the leakproof membrane structure diagram of embodiment 1.
Attached drawing 5 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 1 removes after vim and vigour acquisition
The schematic diagram of syringe needle.
Attached drawing 6 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 2 is not used and under assembled state
Cross-sectional view.
Attached drawing 7 is the structural schematic diagram under the connector and the non-sealed condition of automotive of embodiment 2.
Attached drawing 8 is the structural schematic diagram under the connector and automotive sealed condition of embodiment 2.
Attached drawing 9 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 3 is not used and under assembled state
Cross-sectional view.
Attached drawing 10 is the membrane switch structural schematic diagram of embodiment 4.
Attached drawing 11 is the limit fin structural schematic diagram of embodiment 5.
Attached drawing 12 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 6 is not used and under assembled state
Cross-sectional view.
Specific embodiment
It elaborates with reference to the accompanying drawing to specific embodiment provided by the invention.
Appended drawing reference involved in attached drawing and component part are as follows:
Syringe 1, cylinder seat 11, syringe main body 12
Piston 2
Push-pull rod 3
Membrane switch 4
Syringe needle 5, needle core 51, needle holder 52 limit fin 53
Outer tube 6, distal openings 61, proximal openings 62, distal section 63, proximal section 64, leakproof film 65, hangnail fin
66, block 67, centre bore 68, rub guide pad 69
Connector 7, through-hole 71
Automotive 8
Herein, " distal end " refers to farther away one end of medical staff of instrument distance blood sampling operation in blood collection procedure,
Correspondingly, " proximal end " refers to closer one end of medical staff of instrument distance blood sampling operation in blood collection procedure.
Embodiment 1
Referring to Figure 1 and Fig. 2, Fig. 1 be embodiment 1 automatic needle protection-closing integration vim and vigour acquisition needle be not used
And the cross-sectional view under assembled state, Fig. 2 are automatic needle protection-closing integration vim and vigour acquisition needle disassembled forms of embodiment 1
Under cross-sectional view.
The automatic needle protection-closing integration vim and vigour acquisition needle is equipped with syringe 1, piston 2, push-pull rod 3, membrane switch
4, syringe needle 5 and outer tube 6.
The piston 2 is assemblied in the distal end of push-pull rod 3, and piston 2 is located at the inside of syringe 1, and operation push-pull rod 3 can band
Piston 2 Xiang Yuanduan or proximal direction in syringe 1 is mobile.The distal end of the syringe 1 and the proximal end of syringe needle 5 are assembled.
The syringe 1 includes the syringe main body 12 positioned at the cylinder seat 11 of distal end and positioned at proximal end.The membrane switch 4
Positioned at the position that cylinder seat 11 is connected with syringe main body 12.Membrane switch 4 is the anti-reflux valve of Y type (referring to Fig. 3), where it is flat
Face is parallel with the cross section of syringe 1.
The syringe needle 5 includes needle core 51 and needle holder 52.Needle holder 52 is fixed on the outer wall of 51 proximal end of needle core.Cylinder seat
11 distal end is assemblied in the groove of needle holder 52.The outer wall of needle holder 52 is additionally provided with limit fin 53, the limit fin
53 is flat for the cross section completely around plane and needle holder 52 where 52 1 weeks cords of needle holder, limit fin 53
Row.
The outer tube 6 is socketed in the outside of needle holder 52 and syringe 1.The distal end end face of outer tube 6 is equipped with distal end and opens
Mouth 61, proximal face are equipped with proximal openings 62, and outer tube includes distal section 63 and proximal section 64.Unused and assembled state
Under, the distal end of needle core 51 stretches out in the outside of distal openings 61, and the proximal end of syringe 1 stretches out in the outside of proximal openings 62, distal end
Section 63 is located at the outside of needle holder 52 and cylinder seat 11, and proximal section 64 is located at the outside of syringe main body 12, and proximal section
64 inner walls are contacted with the outer wall of syringe main body 12, and the two has frictional force, so that outer tube 6 and syringe 1 are opposing stationary, and are worked as and are held
When holding outer tube 6 and distally pushing, outer tube 6 can be slided relative to syringe 1.
63 inside of distal section is equipped with leakproof film 65 close to the position of distal openings 61, and the leakproof film 65 is
The anti-reflux valve of "-" type (referring to fig. 4), the plane where under 65 closed state of leakproof film are parallel with the cross section of outer tube 6.
The inner wall that distal section 63 is internally located at limit 53 proximal end side of fin is additionally provided with several hangnail fins 66, each hangnail fin
66 is completely around the planes and outer tube 6 where a cord of 63 inner wall one of distal section circle, each hangnail fin 66
Cross section it is parallel.These several hangnail fins 66 are arranged successively by distal end to proximal end.Distal section 63 and proximal section 64
Mutually the position of linking is equipped with block 67, and the block 67 is located at the inside cavity of outer tube 6, is circular baffle arrangement,
Plane where block 67 is parallel with the cross section of outer tube 6, and the diameter of the centre bore 68 in 67 center of block is greater than cylinder seat 11
Diameter, and be greater than position of the needle holder 52 in addition to limit fin 53 diameter, but be less than needle holder 52 limit fin 53
The diameter of position.
Automatic needle protection of the present invention-closing integration vim and vigour acquisition needle blood application method and its principle are as follows:
(1) before arterial blood gas acquisition, the withdrawing device from aseptic package bag, suction anti-coagulants lubricates complete again after whole lumens
Portion, which pushes away, to be exhausted.
(2) when puncturing, hand is held outside the proximal section 64 and syringe main body 12 of outer tube 6, inserting needle to suitable position,
Then proximally direction pulls push-pull rod 3, and under suction function, the membrane switch 4 is opened, and arterial blood is via the logical of needle core 51
Road, the channel of cylinder seat 11, membrane switch 4 enter in syringe main body 12.
(3) after acquiring, needle core 51 is exited from human body, at this time since there is no suction function, membrane switch 4 closes automatically
It closes.
(4) Fig. 5 is then referred to, Fig. 5 is automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 1 in blood
Gas removes the schematic diagram of syringe needle after acquiring.Medical staff's hand holds proximal section 64, promptly distally pushes
Outer tube 6, limit fin 53 cross hangnail fin 66 one by one, be finally limited in most proximal end hangnail fin 66 and block 67 it
Between, at this time the tip of needle core 51 be located at the leakproof film 65 inside distal section 63 proximal end side and no longer exposed, leakproof film 65
Breach be also automatically closed；Under the further impetus of medical staff's hand, block 67 drives limit fin 53 by syringe needle 5
Removal.After removal, due to limiting the cooperation of fin 53 and hangnail fin 66 and block 67, syringe needle 5 and outer tube 6 is relatively fixed is
One is abandoned without falling off to clinical waste bucket.
(5) it finally, blocking cylinder seat 11 using conventional hermetic cap, send to laboratory.
It should be noted that the automatic needle protection of the present embodiment-closing integration vim and vigour acquisition needle is due to being equipped with housing
Pipe 6, outer tube 6 is interior to be equipped with hangnail fin 66 and block 67, can cooperate with the limit fin 53 in needle holder 52, each component shape
With it is reasonable in design, can after syringe needle 5 is exited from human body, quickly move through at the first time to needle point direction push mode
Syringe needle 5 is removed, then promptly blocks cylinder seat 11 using seal cap, therefore reduces air and enters blood sample by syringe needle 5
Probability, the operation also can avoid medical staff by needlestick injuries well, and the syringe needle 5 pulled out is locked in inside outer tube 6, by
The blood of needle point outflow resides in the inside of outer tube 6, and the objects such as floor will not be dropped under the plugging action of leakproof film 65
On, reduce the probability of pollution environment.In addition, automatic needle protection of the invention-closing integration vim and vigour acquisition needle is using
In the process, suction function is not present when no longer pulling push-pull rod 3, the membrane switch 4 is then automatic to be closed, by syringe main body
Blood sample in 12 is isolated with the blood sample of 4 other side of membrane switch, is prevented air from entering inside syringe main body 1, has been prevented vim and vigour sample
It is mixed into air.
Embodiment 2
Fig. 6 is referred to, Fig. 6 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 2 is not used and assembles
Cross-sectional view under state.
The automatic needle protection-closing integration vim and vigour acquisition needle be equipped with syringe 1, piston 2, push-pull rod 3, connector 7,
Syringe needle 5 and outer tube 6.
The piston 2 is assemblied in the distal end of push-pull rod 3, and piston 2 is located at the inside of syringe 1, and operation push-pull rod 3 can band
Piston 2 Xiang Yuanduan or proximal direction in syringe 1 is mobile.
The syringe 1 includes the syringe main body 12 positioned at the cylinder seat 11 of distal end and positioned at proximal end.The syringe needle 5 wraps
Needle core 51 and needle holder 52 are included, needle holder 52 is fixed on the outer wall of 51 proximal end of needle core.The distal end of the syringe 1 passes through connector 7
It is assembled with the proximal end of syringe needle 5, specifically, the distal end of connector 7 is assemblied in the groove of 52 proximal end of needle holder, the distal end of cylinder seat 11
It is assemblied in the groove of 7 proximal end of connector.Connector 7 is equipped with automotive 8.The outside of needle holder 52 is additionally provided with limit fin 53,
The limit fin 53 is completely around the plane and syringe needle where 52 1 weeks cords of needle holder, limit fin 53
The cross section of seat 52 is parallel.
The outer tube 6 is socketed in the outside of needle holder 52 and syringe 1.The distal end end face of outer tube 6 is equipped with distal end and opens
Mouth 61, proximal face are equipped with proximal openings 62, and outer tube includes distal section 63 and proximal section 64.Unused and assembled state
Under, the distal end of needle core 51 stretches out in the outside of distal openings 61, and the proximal end of syringe 1 stretches out in the outside of proximal openings 62, distal end
Section 63 is located at the outside of needle holder 52, connector 7 and cylinder seat 11, and proximal section 64 is located at the outside of syringe main body 12, and close
64 inner wall of end section is contacted with the outer wall of syringe main body 12, and the two has frictional force, so that outer tube 6 and syringe 1 are opposing stationary,
And when gripping outer tube 6 distally pushes, outer tube 6 can be slided relative to syringe 1.
63 inside of distal section is equipped with leakproof film 65 close to the position of distal openings 61, and the leakproof film 65 is
The anti-reflux valve of "-" type, the plane where under 65 closed state of leakproof film are parallel with the cross section of outer tube 6.Distal section 63
The inner wall for being internally located at limit 53 proximal end side of fin is additionally provided with several hangnail fins 66, and each hangnail fin 66 is completely
Around a cord of 63 inner wall one of distal section circle, the cross section of plane and outer tube 6 where each hangnail fin 66 is flat
Row.These several hangnail fins 66 are arranged successively by distal end to proximal end.The portion that distal section 63 is mutually connected with proximal section 64
Position is equipped with block 67, and the block 67 is located at the inside cavity of outer tube 6, for circular baffle arrangement, 67 place of block
Plane it is parallel with the cross section of outer tube 6, the diameter of the centre bore 68 in the center of block 67 is greater than the straight of cylinder seat 51 and connector 7
Diameter, and it is greater than the diameter at position of the needle holder 52 in addition to limiting fin 53, but be less than needle holder 52 and limit 53 position of fin
Diameter.
Fig. 7 is referred to, Fig. 7 is the structural schematic diagram under the connector and the non-sealed condition of automotive of embodiment 2.Described
7 wall of connector is equipped with through-hole 71, and the through-hole 71 is cylinder, and automotive 8 is assemblied in inside through-hole 71, automotive 8
Top surface be inclined plane shape, and the side height of nearly syringe needle is larger, and the side height of nearly syringe is smaller.
Fig. 8 is referred to, Fig. 8 is the structural schematic diagram under the connector and automotive sealed condition of embodiment 2.When having taken a blood sample
After the withdraw of the needle, medical staff's hand holds proximal section 64, promptly distally pushes outer tube 6, and block 67 touches
Automotive 8 is compressed in connector 7 matched with the automotive 8 by the upper surface of automotive 8 in sliding process
Groove, and then by the channel enclosed of connector 7.
The present embodiment automatic needle protection-closing integration vim and vigour acquisition needle blood application method and its principle are as follows:
(1) before arterial blood gas acquisition, by the withdrawing device from aseptic package bag, after the whole lumens of suction anti-coagulants lubrication again
It all pushes away and exhausts.
(2) when puncturing, hand is held outside the proximal section 64 and syringe main body 12 of outer tube 6, inserting needle to suitable position,
Then proximally direction pulls push-pull rod 3, and under suction function, arterial blood is via the channel of needle core 51, the channel of connector 7, syringe
The channel of seat 11 enters in syringe main body 12.
(3) after acquiring, needle core 51 is exited from human body.
(4) then medical staff's hand holds proximal section 64, promptly distally pushes outer tube 6, the process
In, automotive 8 is pushed the channel of closed joint 7 in turn by the upper surface that block 67 touches automotive 8, then limit convex
Rib 53 crosses hangnail fin 66 one by one, finally limits fin 53 and is limited between the hangnail fin 66 of most proximal end and block 67,
The tip of needle core 51 is located at the proximal end side of the leakproof film 65 inside distal section 63 and no longer exposed at this time, and leakproof film 65 is split
Mouth is also automatically closed；Under the further impetus of medical staff's hand, block 67 drives limit fin 53 to remove syringe needle 5
It removes.After removal, due to limit fin 53 and hangnail fin 66 and block 67 cooperation, syringe needle 5 and outer tube 6 it is relatively fixed be one
Body is abandoned without falling off to clinical waste bucket.
(5) it finally, blocking cylinder seat 11 using conventional hermetic cap, send to laboratory.
It should be noted that the automatic needle protection of the present embodiment-closing integration vim and vigour acquisition needle is due to being equipped with housing
Pipe 6, outer tube 6 is interior to be equipped with hangnail fin 66 and block 67, can cooperate with the limit fin 53 in needle holder 52, each component shape
With it is reasonable in design, can after syringe needle 5 is exited from human body, quickly move through at the first time to needle point direction push mode
Syringe needle 5 is removed, then promptly blocks cylinder seat 11 using seal cap, therefore reduces air and enters blood sample by syringe needle 5
Probability, the operation also can avoid medical staff by needlestick injuries well, and the syringe needle 5 pulled out is locked in inside outer tube 6, by
The blood of needle point outflow resides in the inside of outer tube 6, and the objects such as floor will not be dropped under the plugging action of leakproof film 65
On, reduce the probability of pollution environment.In addition, the channel inside connector 7 is closed during removing syringe needle 5, it is isolated
Blood sample in syringe main body 12 prevents air from entering inside syringe main body 1, has prevented vim and vigour sample and has been mixed into air.The present embodiment
The automotive structure of connector 7 is very simple, and preparation process difficulty is low.
Embodiment 3
Fig. 9 is referred to, Fig. 9 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 3 is not used and assembles
Cross-sectional view under state.
The automatic needle protection of the present embodiment-closing integration vim and vigour acquisition needle construction and automatic needle described in embodiment 1
Head protection-closing integration vim and vigour acquisition needle is essentially identical, and the difference is that only: the membrane switch 4 is located at cylinder seat 51
In internal channel.
That is the position of the membrane switch 4 is not limited only to embodiment 1, is physically located 1 inside any position of syringe,
But still in mode described in embodiment 1 as optimal selection, it is ensured that membrane switch 4 is sufficiently opened in blood collection procedure, and is completely cut off
The all blood samples of cylinder seat 11 improve the accuracy of testing result.
Embodiment 4
The automatic needle protection of the present embodiment-closing integration vim and vigour acquisition needle construction and automatic needle described in embodiment 1
Head protection-closing integration vim and vigour acquisition needle is essentially identical, and the difference is that only: the membrane switch 4 is anti-for " ten " font
Reflux valve (referring to Figure 10).
Embodiment 5
The automatic needle protection of the present embodiment-closing integration vim and vigour acquisition needle construction and automatic needle as described in example 2
Head protection-closing integration vim and vigour acquisition needle is essentially identical, the difference is that only: limit fin 53, hangnail fin 66, block
67 shape and structure is different.
1, Figure 11 is the limit fin structural schematic diagram of embodiment 5 referring to Figure 1.There are four the limit fins 53,
Each limit fin 53 is sector, the plane and needle holder that four limit fins 53 are arranged and constituted around needle holder 52
52 cross section is parallel.
The shape of the hangnail fin 66 and block 67 is consistent with limit 53 shape of fin, is fan-shaped and circulating type
Arrangement.
Embodiment 6
2, Figure 12 is that automatic needle protection-closing integration vim and vigour acquisition needle of embodiment 6 is not used and fills referring to Figure 1
With the cross-sectional view under state.Described in the automatic needle protection of the present embodiment-closing integration vim and vigour acquisition needle construction and embodiment 1
Automatic needle protection-closing integration vim and vigour acquisition needle it is essentially identical, the difference is that only: the outer tube 6 it is close
64 inner wall of end section is not contacted with the outer wall of syringe main body 12 directly, but is equipped with friction on the inner wall of proximal section 64 and is led
To block 69, the friction guide pad 69 is contacted close to the face of 1 central axis of syringe with the outer wall of syringe main body 12, and the two has
Frictional force, so that outer tube 6 and syringe 1 are opposing stationary, and when gripping outer tube 6 distally pushes, outer tube 6 can phase
Syringe 1 is slided.
The present disclosure applies equally to hypodermic needle, vein blood taking needles etc..
The above is only a preferred embodiment of the present invention, described particular features, structures, materials, or characteristics
It can be combined in any suitable manner in any one or more of the embodiments or examples, it should also be noted that being led for this technology
The those of ordinary skill in domain can also make several improvement and supplement under the premise of not departing from the method for the present invention, these improvement
It also should be regarded as protection scope of the present invention with supplement.
Claims (10)
1. a kind of automatic needle protection-closing integration vim and vigour acquire needle, it is equipped with syringe, piston, push-pull rod and syringe needle, feature
It is, is additionally provided with outer tube；The syringe includes cylinder seat and syringe main body；The syringe needle includes that needle core and outer wall are equipped with
Limit the needle holder of fin；The outer tube is socketed in the outside of needle holder and syringe, the distal end end face of the outer tube
Equipped with distal openings, proximal face is equipped with proximal openings, and the outer tube includes distal section and proximal section, be not used and
Under assembled state, the distal end of the needle core stretches out in the outside of distal openings, and the proximal end of the syringe stretches out in proximal end and opens
The outside of mouth, the distal section are located at the outside of needle holder and cylinder seat, and the proximal section is located at syringe main body
It is external；Outer tube from thrust distally to outer tube and syringe described in when not applying is opposing stationary, applies to outer tube
Outer tube described in when thrust distally is slided relative to syringe；Close to distal openings inside the distal section
Position is equipped with the leakproof film of anti-reflux, and the inner wall that the distal section is internally located at limit fin proximal end side is equipped with several
The position that hangnail fin, the distal section and proximal section are mutually connected is equipped with block, when distally pushing outer tube
When, the limit fin is crossed hangnail fin one by one and is finally limited between the hangnail fin of most proximal end and block, this
When needle core tip be located at the proximal end side of leakproof film and no longer exposed.
2. automatic needle protection according to claim 1-closing integration vim and vigour acquire needle, which is characterized in that described
Automatic needle protection-closing integration vim and vigour acquisition needle is equipped with the membrane switch of anti-reflux, and the membrane switch is located inside syringe
Channel in.
3. automatic needle protection according to claim 2-closing integration vim and vigour acquire needle, which is characterized in that described
Membrane switch is located at the position that cylinder seat is connected with syringe main body.
4. automatic needle protection according to claim 2-closing integration vim and vigour acquire needle, which is characterized in that described
Membrane switch is "-" type, the cross or anti-reflux valve of Y type.
5. automatic needle protection according to claim 1-closing integration vim and vigour acquire needle, which is characterized in that described
It is assembled by the proximal end of connector and syringe needle the distal end of syringe；Its wall of the connector is equipped with through-hole, assembly in the through-hole
There is automotive, the top surface of the automotive is inclined plane shape；When distally pushing outer tube, the block is connect
The upper surface for contacting automotive presses to automotive in sliding process matched recessed with the automotive in connector
In slot, and then by the channel enclosed of connector.
6. automatic needle protection according to claim 1-closing integration vim and vigour acquire needle, which is characterized in that described
Limiting fin is completely around the cross of plane and needle holder where one week cord of needle holder, the limit fin
Section is parallel；Or the limit fin has several, these several limit fins are arranged around needle holder and institute's structure
At plane it is parallel with the cross section of needle holder.
7. automatic needle protection according to claim 1-closing integration vim and vigour acquire needle, which is characterized in that each fall
Piercing fin is the cord completely enclosed around distal section inner wall one, the plane and outer tube where each hangnail fin
Cross section is parallel, these several hangnail fins are arranged successively by distal end to proximal end；Or these several hangnail fin rings around
Distal section inner wall arrangement.
8. automatic needle protection according to claim 1-closing integration vim and vigour acquire needle, which is characterized in that described
Block is circular baffle arrangement or constitutes circular baffle arrangement, the cross of plane and outer tube where the block
Section is parallel, and there is centre bore in the block center, and the diameter of the centre bore is greater than the diameter of cylinder seat, and is greater than needle holder
The diameter at the position in addition to limiting fin, but it is less than the diameter at needle holder limit fin position.
9. automatic needle protection according to claim 1-closing integration vim and vigour acquire needle, which is characterized in that described
The inner wall of proximal section is contacted with the outer wall of syringe main body；Or the outer wall of the inner wall of the proximal section and syringe main body it
Between be equipped with friction guide pad.
10. automatic needle protection according to claim 1-closing integration vim and vigour acquire needle, which is characterized in that described
Leakproof film is "-" type, the cross or anti-reflux valve of Y type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418770.0A CN109998567B (en) | 2019-05-20 | 2019-05-20 | Automatic needle head protection-sealing integrated blood and gas collection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418770.0A CN109998567B (en) | 2019-05-20 | 2019-05-20 | Automatic needle head protection-sealing integrated blood and gas collection needle |
Publications (2)
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| CN109998567A true CN109998567A (en) | 2019-07-12 |
| CN109998567B CN109998567B (en) | 2024-01-12 |
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| CN201910418770.0A Active CN109998567B (en) | 2019-05-20 | 2019-05-20 | Automatic needle head protection-sealing integrated blood and gas collection needle |
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Cited By (2)
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| CN111450355A (en) * | 2020-03-23 | 2020-07-28 | 中国人民解放军海军军医大学 | Needle-prick-proof syringe capable of being preloaded with medicine |
| CN112890813A (en) * | 2021-02-23 | 2021-06-04 | 河北医科大学第一医院 | Novel artery blood taking needle |
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| CN109998567B (en) | 2024-01-12 |
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