CN113080958A

CN113080958A - Anti-puncture and leak-proof arterial hemostix

Info

Publication number: CN113080958A
Application number: CN202110423334.XA
Authority: CN
Inventors: 黄志华; 潘春柳; 陶小艳; 曾柳青
Original assignee: Shenzhen Sami Medical Center
Current assignee: Shenzhen Sami Medical Center
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-07-09

Abstract

The invention discloses an anti-needle puncture injury and an anti-leakage arterial blood sampling device; it comprises a blood sampling aspirator, a blood sampling needle and an anti-needle prick injury/leakage-proof sleeve; the blood sampling needle is connected to the front end of the blood sampling aspirator; The sleeve can be slid back and forth outside the blood collection aspirator, and the front end of the anti-needle puncture/leakage-proof sleeve is open and adhered to a disc-shaped sealing cotton block that seals the front end of the blood collection aspirator; The front end of the disc-shaped sealing cotton block extends forward to the outside of the front side of the disc-shaped sealing cotton block; when sliding the anti-needle stick/leakage sleeve forward until the disc-shaped sealing cotton block is located on the front side of the blood collection needle , the blood collection needle is sealed by the cover. Effect: After the patient's arterial blood collection is completed, the needle-stick injury/leak-proof sleeve can be slid forward until the blood collection needle is sealed, so that needle stick injuries and cross-infection can be better avoided. Strong practicability and good use effect.

Description

Anti-puncture and leak-proof arterial hemostix

Technical Field

The invention relates to the technical field of medical nursing products, in particular to an anti-needle-stick and anti-leakage arterial hemostix.

Background

An arterial hemostix, as the name implies, is a medical device used for arterial blood collection of patients, which is mainly used for collecting and primarily preserving arterial blood samples for in vitro diagnostic tests.

The structure of the existing arterial hemostix is basically similar to that of a conventional medical injector, and the existing arterial hemostix mainly comprises a suction tube, a blood sampling needle head connected to the front end of the corresponding suction tube, a needle protecting cap fixedly sleeved outside the corresponding blood sampling needle head, an exhaust sealing piston which can slide back and forth and is clamped in the corresponding suction tube, and a push rod of which the rear end extends out of the rear end of the corresponding suction tube and the front end extends into the corresponding suction tube and is connected to the corresponding exhaust sealing piston; the exhaust hole stone is embedded in the corresponding exhaust sealing piston.

When the existing arterial hemostix is used, firstly, the exhaust sealing piston is pushed to the front end of the suction cylinder, then the exhaust sealing piston is pulled back to a preset position, for example, the arterial hemostix with the capacity of 3ml of the suction cylinder, the preset blood drawing amount is generally 1.6ml, so that the exhaust sealing piston needs to be pulled back to a position corresponding to the capacity scale of 1.6ml of the outer wall of the suction cylinder, then the corresponding needle protecting cap is pulled out, the artery is positioned, so that the corresponding blood drawing needle head and the skin of a patient form an angle of 45 degrees to 90 degrees for needle insertion, after the corresponding blood drawing needle head enters the artery of the patient, the arterial blood of the patient naturally flows into the corresponding suction cylinder, the air in the corresponding suction cylinder can be rapidly discharged through the corresponding vent stone, when the blood liquid level reaches the preset position, the corresponding vent stone meets the wet seal, at this time, the arterial blood drawing is completed, finally, the corresponding blood drawing needle head is pressed on the skin puncture position of the patient by using, and vertically inserting the corresponding extracted blood sampling needle into a rubber needle plug.

For the blood sampling mode, medical personnel find out in the clinical working process that: on the one hand, when extracting corresponding blood sampling syringe needle, corresponding blood sampling syringe needle tip has a small amount of blood drippage, make easy polluted environment and easily lead to arousing cross infection, when patient has the infectious disease that can propagate through blood, then arouse cross infection more easily, on the other hand, extract corresponding blood sampling syringe needle, and when inserting a rubber needle stopper perpendicularly with the corresponding blood sampling syringe needle of extracting, this process is not good like the operation handle nature, then stab medical personnel's hand very easily, make and have certain operation potential safety hazard, and easily arouse cross infection equally.

Moreover, in the arterial blood sampling process, cases of needle-stick injuries and cross infection occur every year, and at the present stage, no arterial blood sampling device which has good controllability and can simultaneously prevent needle-stick injuries and leakage so as to avoid needle-stick injuries and cross infection is available.

Accordingly, the present inventors have devised and devised an approach to solve the above-mentioned related art problems.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a puncture-proof and leak-proof arterial hemostix.

The technical scheme adopted by the invention for solving the problems in the prior art is as follows: a puncture-proof and leak-proof arterial hemostix comprises a blood sampling aspirator, a blood sampling needle head and a puncture-proof/leak-proof sleeve for covering the blood sampling needle head;

the blood sampling needle head is forwards connected with the front end of the blood sampling aspirator; the front end and the rear end of the anti-puncture/anti-leakage sleeve are both formed into openings and are sleeved outside the blood sampling aspirator in a sliding manner, and a disc-shaped sealing cotton block for covering and sealing the front end of the blood sampling aspirator is adhered to the inner wall of the opening at the front end of the anti-puncture/anti-leakage sleeve; the blood sampling needle head penetrates through the disc-shaped sealing cotton block, and the front end of the blood sampling needle head penetrates forwards to the outside of the front side of the disc-shaped sealing cotton block;

when the anti-needle-stick injury/leakage-proof sleeve is slid forward to enable the disc-shaped sealing cotton block in the front end opening to be positioned at the front side of the blood sampling needle head, the anti-needle-stick injury/leakage-proof sleeve and the disc-shaped sealing cotton block in the front end opening cover the blood sampling needle head in a sealing manner.

The above technical solution is further described as follows:

preferably, the blood sampling aspirator comprises an aspirator barrel, an exhaustible sealing piston and a push rod;

a luer connector with external threads is arranged forwards at the front end of the suction cylinder; the rear end of the suction cylinder is formed into a drawing opening, and a circle of ear seats A are arranged on the periphery of the drawing opening; the sealing piston capable of exhausting and sliding back and forth is clamped in the suction cylinder, and the rear end of the sealing piston capable of exhausting is connected with the front end of the push rod; the rear end of the push rod extends out of the rear end opening of the suction cylinder, and a circle of lug seat B is arranged on the periphery of the rear end opening of the push rod;

the rear end of the blood sampling needle head is provided with a needle handle which is suitable for being connected to the outside of the Ruhr joint in a threaded manner; the anti-needle-prick/anti-leakage sleeve can be sleeved outside the suction barrel in a sliding manner, and the front end of the suction barrel is sealed by the disc-shaped sealing cotton block.

Preferably, the inner wall of the opening at the front end of the anti-needle-prick/anti-leakage sleeve is inwards and convexly provided with a limiting ring A which is integrally formed with the anti-needle-prick/anti-leakage sleeve, and the inner diameter of the limiting ring A is smaller than the outer diameter of the suction cylinder and larger than the outer diameter of the needle handle;

the disc-shaped sealing cotton block is fixedly adhered in the limiting ring A.

Preferably, a plurality of cuts are evenly opened to its periphery in disc sealed cotton piece center department to with disc sealed cotton piece is equallyd divide into the fan-shaped sealing of polylith portion.

Preferably, the length of the needle stick injury/leakage prevention sleeve is greater than the length of the lancet head and less than the length of the suction cartridge.

Preferably, the inner wall of the opening at the rear end of the anti-needle-prick/anti-leakage sleeve is inwards and convexly provided with a limiting ring B which is integrally formed with the anti-needle-prick/anti-leakage sleeve, and the inner diameter of the limiting ring B is slightly larger than the outer diameter of the suction cylinder;

a plurality of rings of flexible retainer rings made of soft rubber materials and used for stopping the limiting ring B from sliding forwards are uniformly and convexly arranged at the front end of the outer wall of the suction cylinder;

when the anti-needle-stick injury/leakage-proof sleeve is slid forwards to enable the disc-shaped sealing cotton block in the front end opening to be positioned on the front side of the blood sampling needle head, the anti-needle-stick injury/leakage-proof sleeve and the disc-shaped sealing cotton block in the front end opening cover the blood sampling needle head in a sealing mode, and the limiting ring B is pushed forwards to the flexible retaining ring.

Preferably, the outer wall of the suction cylinder is provided with capacity scales along the length direction, and a plurality of flexible retaining rings are respectively provided with a notch groove which does not shield the capacity scales.

Preferably, the anti-needling/anti-leakage sleeve and the suction cylinder are made of transparent plastic materials, and the outer wall of the anti-needling/anti-leakage sleeve is provided with a plurality of circles of anti-skid lines.

Preferably, the luer fitting housing incorporates a sealing ring, and the needle has a rear end opening against the sealing ring when screwed onto the luer fitting housing.

Preferably, the ventable sealing piston comprises a cylindrical plug body and a plurality of vent stones;

the cylindrical plug body is made of high-density polyester materials, a plurality of sealing convex rings are uniformly arranged on the outer wall of the cylindrical plug body in a protruding mode, a plurality of exhaust passages which penetrate through the front end face of the push rod and are not the rear end face of the cylindrical plug body are uniformly formed in the front end face of the cylindrical plug body close to the periphery of the cylindrical plug body in the backward direction, and a plurality of exhaust holes are correspondingly embedded in the exhaust passages.

The invention has the beneficial effects that:

the invention provides a puncture-proof and leak-proof arterial hemostix, which is characterized in that a puncture-proof/leak-proof sleeve for covering a blood sampling needle is additionally arranged on the basis of a traditional arterial hemostix, the puncture-proof/leak-proof sleeve is completely sleeved outside the blood sampling aspirator before use, so that the use of the blood sampling needle and the blood sampling aspirator is not influenced, namely, the blood sampling needle is punctured into an artery of a patient and the collection of arterial blood of the patient by the blood sampling aspirator is not influenced, when the puncture-proof/leak-proof sleeve is used, namely after the arterial blood of the patient is completely collected, the puncture-proof/leak-proof sleeve can be slid forwards to ensure that a disc-shaped sealing cotton block in an open port at the front end of the puncture-proof/leak-proof sleeve is abutted against a skin puncture part of the patient, and then the puncture-proof/leak-proof sleeve is stabilized, and pull backward the blood sampling aspirator and rather than continuous the blood sampling syringe needle, until the blood sampling syringe needle is accomodate to in the prevent acupuncture hinder/leak protection sleeve, so, realize promptly that the blood sampling syringe needle can be sealed the closure in the twinkling of an eye of pulling out from, make can be better avoid causing acupuncture and cause cross infection, and even if the blood sampling syringe needle tip still has a small amount of blood to leak outward after pulling out patient's skin puncture position, the small amount of blood that leaks outward then attach to prevent acupuncture hinder/leak protection sleeve inner wall and by the separation of disc seal cotton piece or absorption makes still can not drip to the contaminated environment such as ground and cause cross infection, and, this application when implementing, pull out this application and promote forward prevent acupuncture hinder/leak protection sleeve to make it will the blood sampling syringe needle closure can, relevant operation control nature is good and handle nature is good, the medical personnel hand is kept away from all the time blood taking needle head end portion does not need worry about being wounded by the needle puncture, and then, this application practicality is strong, excellent in use effect.

Drawings

FIG. 1 is a schematic view of the whole structure of the anti-needle-stick and leak-proof arterial hemostix of the present invention;

FIG. 2 is an exploded view of the anti-needle-stick and leak-proof arterial hemostix of FIG. 1;

FIG. 3 is a schematic diagram of the overall configuration of the ventable sealing piston of FIG. 2;

FIG. 4 is an exploded view of the ventable sealing piston of FIG. 3;

FIG. 5 is a schematic view of the overall structure of the disc-shaped sealing cotton block in FIG. 2;

FIG. 6 is a view showing the state of the anti-needle stick and anti-leakage device for arterial blood collection in the state where the anti-needle stick/anti-leakage sleeve is hermetically covered on the blood collection needle;

FIG. 7 is a longitudinal cross-sectional view of the anti-needle stick and leak proof arterial hemostix of the present invention;

FIG. 8 is an exploded view of the anti-needle-stick and leak-proof arterial blood collector of FIG. 7;

FIG. 9 is a cross-sectional view of the needle stick prevention and leak prevention arterial blood collector of the present invention with the needle stick prevention/leak prevention sleeve sealingly covering the blood collection needle;

FIG. 10 is an enlarged view of the needle stick prevention/containment sleeve of FIG. 8;

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Reference numerals:

a puncture-proof and leak-proof arterial hemostix 1000;

a blood collection aspirator 10;

a suction cylinder 101;

luer fitting 1011;

an ear mount A1012;

a flexible retainer ring 1013;

a notched groove 10131;

capacity scale 1014;

a seal ring 1015;

a ventable sealing piston 102;

a cylindrical plug body 1021;

a sealing outer projection 10211;

exhaust passage 10212;

an I-shaped trepan bore 10213;

an exhaust vent stone 1022;

a push rod 103;

an ear mount B1031;

a fixing recess 1032;

a blood collection needle 20;

a needle handle 201;

a needle stick injury prevention/leakage prevention sleeve 30;

a disc-shaped sealing cotton block 301;

a cut 3011;

a sector seal portion 3012;

a spacing ring A302;

a spacing ring B303;

anti-skid ridges 304;

Detailed Description

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments so that the inventive spirit of the present invention can be more clearly and intuitively understood.

As shown in connection with fig. 1-10;

the invention provides a puncture-proof and leak-proof arterial hemostix 1000, which comprises a blood sampling aspirator 10, a blood sampling needle head 20 and a puncture-proof/leak-proof sleeve 30 for covering the blood sampling needle head 20;

the blood sampling needle head 20 is forwards connected with the front end of the blood sampling aspirator 10; the front end and the rear end of the anti-puncture/anti-leakage sleeve 30 are both formed into openings and are sleeved outside the blood sampling aspirator 10 in a sliding manner, and a disc-shaped sealing cotton block 301 for covering and sealing the front end of the blood sampling aspirator 10 is adhered to the inner wall of the opening at the front end of the anti-puncture/anti-leakage sleeve 30; the blood sampling needle head 20 penetrates through the disc-shaped sealing cotton block 301, and the front end of the blood sampling needle head penetrates forwards to the outside of the front side of the disc-shaped sealing cotton block 301;

when the needle stick prevention/leakage prevention sleeve 30 is slid forward such that the disc-shaped sealing cotton block 301 in the open front end thereof is positioned at the front side of the lancet head 20, the needle stick prevention/leakage prevention sleeve 30 and the disc-shaped sealing cotton block 301 in the open front end thereof sealingly cover the lancet head 20.

Based on the above, it is clear that the present invention is mainly used as the anti-needle-stick and anti-leakage arterial blood collector 1000 in practical implementation.

The invention is additionally provided with an anti-puncture/anti-leakage sleeve 30 used for covering the blood sampling needle head 20 on the basis of the traditional arterial blood sampling device, before the use, the anti-puncture/anti-leakage sleeve 30 is completely sleeved outside the blood sampling aspirator 10, so that the use of the blood sampling needle head 20 and the blood sampling aspirator 10 is not influenced, namely the blood sampling needle head 20 is pricked into the artery of a patient and the blood sampling aspirator 10 is not influenced to collect the arterial blood of the patient.

When the anti-needle-stick injury/leakage-proof sleeve 30 is used, namely after the arterial blood of a patient is collected, the anti-needle-stick injury/leakage-proof sleeve 30 can be slid forwards until the disc-shaped sealing cotton block 301 in the front end opening of the anti-needle-stick injury/leakage-proof sleeve is abutted to the skin puncture part of the patient, the anti-needle-stick injury/leakage-proof sleeve 30 is stabilized, the blood sampling suction device 10 and the blood sampling needle head 20 connected with the blood sampling suction device are pulled backwards until the blood sampling needle head 20 is stored in the anti-needle-stick injury/leakage-proof sleeve 30, and therefore the blood sampling needle head 20 can be covered in a sealing mode at the moment of being pulled away, and the needle-stick injury and cross infection can be well avoided.

Even if a small amount of blood still leaks out after the end of the blood collection needle 20 is pulled out of the skin puncture site of the patient, the leaked small amount of blood adheres to the inner wall of the anti-needle-stick/anti-leakage sleeve 30 and is blocked or absorbed by the disc-shaped sealing cotton block 301, so that the blood still cannot drip to the ground and the like to pollute the environment and cause cross infection.

Moreover, when the blood sampling needle is used, the needle-prick prevention/leakage prevention sleeve 30 is pulled out of the blood sampling needle and pushed forward to cover the blood sampling needle 20, the related operation and control performance is good, the handling performance is good, and the hand of the medical staff is always far away from the end part of the blood sampling needle 20 without worrying about the needle-prick injury.

Furthermore, the application is strong in practicability and good in using effect.

Further, in the present technical solution, the blood sampling aspirator 10 is basically the same as the main body of the existing arterial blood sampling device, and includes an aspiration cylinder 10, an air-dischargeable sealing piston 102 and a push rod 103;

wherein, the front end of the suction cylinder 10 is provided with a luer connector 1011 with external threads; the rear end of the suction tube 10 is formed into a drawing opening, and a circle of ear seats A1012 are arranged on the periphery of the drawing opening; the sealing piston 102 capable of exhausting is clamped in the suction cylinder 10 in a back-and-forth sliding manner, and the rear end of the sealing piston is connected with the front end of the push rod 103; the rear end of the push rod 103 extends out of the rear end opening of the suction barrel 10, and a circle of ear seats B1031 are arranged on the periphery of the rear end opening of the push rod 103;

the rear end of the blood taking needle head 20 is provided with a needle handle 201 which is suitable for being connected to the outside of the luer connector 1011 in a threaded mode; the anti-needle-stick/anti-leakage sleeve 30 is fixed outside the suction tube 10 in a sliding manner, and the front end of the suction tube 10 is sealed by the disc-shaped sealing cotton block 301.

Therefore, it is clear that in the present embodiment, the shape and structure of the blood sampling aspirator 10 are substantially the same as those of the conventional syringe, except that the corresponding air-dischargeable sealing piston 102 is provided, and the corresponding air-dischargeable sealing piston 102 can be used for discharging air and can maintain good sealing performance after the air in the aspiration cylinder 10 is discharged.

And the disc-shaped sealing cotton block 301 has good elasticity and good flexibility, so that the blood sampling needle head 20 can penetrate through the disc-shaped sealing cotton block conveniently, and good sealing performance can be kept, so that the blood sampling needle head 20 can be better sealed and covered in the suction tube 10.

Still further, in the present technical solution, the inner wall of the front end opening of the anti-needle-stick/anti-leakage sleeve 30 is inwardly and convexly provided with a spacing ring a302 integrally formed therewith, and the inner diameter of the spacing ring a302 is smaller than the outer diameter of the suction tube 10 and larger than the outer diameter of the needle handle 201;

the disc-shaped sealing cotton block 301 is adhered in the spacing ring A302.

From the above, it can be foreseen that, in the present application, when the anti-needle-prick/leakage-proof sleeve 30 is pulled backwards to be completely fixed outside the suction tube 10, the limiting ring a302 disposed at the front end of the anti-needle-prick/leakage-proof sleeve will be abutted to the periphery of the front end face of the suction tube 10, so that the anti-needle-prick/leakage-proof sleeve 30 will not be pulled backwards to be separated from the suction tube 10, and the front end face of the suction tube 10 will not push the disc-shaped sealing cotton block 301 forwards to cause the disc-shaped sealing cotton block to fall off.

Therefore, the needle-prick prevention/leakage prevention sleeve 30 with the corresponding structure limiting ring A302 has good fixing stability and good fixing reliability, so that the use is also reliable.

Furthermore, in this technical solution, a plurality of notches 3011 are evenly opened at the center of the disc-shaped sealed cotton block 301 to the periphery thereof, so as to divide the disc-shaped sealed cotton block 301 into a plurality of sector-shaped sealing portions 3012.

Therefore, the disc-shaped sealing cotton block 301 with the corresponding structure is cut to form a petal-shaped structure, before use, the middle part of the disc-shaped sealing cotton block can form a gap, and the formed gap is adjustable in size, so that the blood sampling needle 20 and the needle handle 201 at the rear end of the blood sampling needle 20 can pass through conveniently, when the blood sampling needle 20 is covered in the anti-needle-prick/leakage-proof sleeve 30 in use, the middle part of the blood sampling needle can be automatically closed, the disc-shaped sealing cotton block 301 with the petal-shaped structure can keep better sealing performance, so that the sealing cover can be covered on the corresponding blood sampling needle 20 in the anti-needle-prick/leakage-proof sleeve 30, the end part of the corresponding blood sampling needle 20 is not easy to leak out of the application even if blood leaks out, and the application is safe and reliable in use.

Further, in practice, the length of the needle stick prevention/leakage prevention sleeve 30 of the present application is greater than the length of the lancet head 20 and less than the length of the suction cartridge 10.

Thus, the needle stick injury/leakage prevention sleeve 30 of the present application is adapted to be secured to the outside of the suction cartridge 10 when not in use and to completely cover the lancet tip 20 when in use.

In addition, in the present technical solution, the inner wall of the rear end opening of the needle stick injury prevention/leakage prevention sleeve 30 is inwardly and convexly provided with a spacing ring B303 integrally formed therewith, and the inner diameter of the spacing ring B303 is slightly larger than the outer diameter of the suction tube 10;

on the basis, the front end of the outer wall of the suction tube 10 is uniformly and convexly provided with a plurality of rings of flexible retainer rings 1013 made of soft rubber materials and used for stopping the limiting ring B303 from sliding forwards;

when the needle puncture prevention/leakage prevention sleeve 30 is slid forward such that the disc-shaped sealing cotton block 301 in the front end opening thereof is located at the front side of the lancet head 20, the needle puncture prevention/leakage prevention sleeve 30 and the disc-shaped sealing cotton block 301 in the front end opening thereof hermetically cover the lancet head 20, and at this time, the position-limiting ring B303 abuts forward against the flexible retainer ring 1013.

Therefore, in the present application, it is expected that when the needle stick prevention/leakage prevention sleeve 30 is pushed forward to completely cover the blood collection needle 20, the stop ring B303 disposed at the rear end of the needle stick prevention/leakage prevention sleeve will abut against the rearmost stop ring B303, so that the needle stick prevention/leakage prevention sleeve 30 will not be pushed forward to be separated from the suction barrel 10.

Therefore, the needle-prick prevention/leakage prevention sleeve 30 with the corresponding structure limiting ring B303 is better in sleeve fixing stability and sleeve fixing reliability, and is more reliable to use.

Preferably, the outer diameters of the multiple circles of flexible retainer rings 1013 are slightly larger than the inner diameter of the needle puncture prevention/leakage prevention sleeve 30, so that the needle puncture prevention/leakage prevention sleeve 30 can provide a certain damping when sliding back and forth along the suction cylinder 10, so that the needle puncture prevention/leakage prevention sleeve 30 can only slide back and forth when pushed with a small force, and when sliding forward to cover the lancet 20, the needle puncture prevention/leakage prevention sleeve is not easy to freely slide backwards and displace to expose the lancet 20, thereby ensuring that the covering reliability of the lancet 20 is good.

Moreover, the flexible retainer ring 1013 is provided with a plurality of circles, so as to improve the stability of the front-back sliding of the needle-prick prevention/leakage prevention sleeve 30, so that the needle-prick prevention/leakage prevention sleeve 30 is not easy to shake when sliding in the front-back direction, and the flexible retainer ring 1013 can also increase the sealing performance, so that the blood sampling needle 20 is covered by a seal, even if leaked blood exists at the end part of the needle-prick prevention/leakage prevention sleeve, the leaked blood is not easy to flow out through the rear opening of the needle-prick prevention/leakage prevention sleeve 30, and the infection prevention effect of the blood sampling needle is better.

In specific implementation, the outer wall of the suction tube 10 of the present application is provided with capacity scales 1014 along the length direction thereof, and the plurality of flexible retainer rings 1013 are respectively provided with a notch groove 10131 that does not block the capacity scales 1014.

Thus, in contrast to the volume scale 1014, the ventable sealing piston 102 may be pushed back into position to facilitate the collection of a desired amount of arterial blood using the subject application.

It is further supplementary to need, when concrete implementation, this application prevent that the needle prick hinders/leak protection sleeve 30 reaches it is the preparation of transparent plastic material to suction section of thick bamboo 10 to in see through it and observe the volume of taking a blood sample, just prevent that the needle prick hinders/leak protection sleeve 30 outer wall and is equipped with many rings of anti-skidding lines 304, so that hold the antiskid anticreep nature good when controlling it. .

It is further to be added that in the implementation, a sealing ring 1015 is fixed outside the luer 1011, and the rear end of the needle handle 201 is open to the sealing ring 1015 when the needle handle is screwed outside the luer 1011.

Therefore, the rear end of the blood sampling needle head 20 is not easy to leak blood, and the whole blood leakage prevention effect of the blood sampling needle head is better.

In addition, in the present embodiment, the ventable sealing piston 102 includes a cylindrical plug 1021 and a plurality of vent stones 1022 with vent holes;

the cylindrical plug body 1021 is made of high-density polyester materials, so that the cylindrical plug body 1021 has excellent air tightness, a plurality of circles of sealing protrusions 10211 are uniformly and convexly arranged on the outer wall of the cylindrical plug body 1021, a plurality of air discharge passages 10212 which penetrate through the front end face of the cylindrical plug body 1021 and are not shielded by the front end of the push rod 103 are uniformly and backwards arranged on the front end face of the cylindrical plug body 1021 near the peripheral edge of the cylindrical plug body, a plurality of air discharge stones 1022 are correspondingly embedded in the air discharge passages 10212, and an I-shaped sleeve hole 10213 which penetrates through the middle part of the front end face of the cylindrical plug body 1021 and is formed into an I-shaped cross section is arranged in the middle of; the outer wall of the front end of the push rod 103 is recessed inwards to form a fixing concave step 1032 suitable for being clamped to the I-shaped sleeve hole 10213, and the plurality of exhaust channels 10212 are uniformly distributed on the periphery of the I-shaped sleeve hole 10213.

By designing the ventable sealing piston 102 with the above structure, it can be seen that the application, when implemented, is substantially used as follows:

firstly, the ventable sealing piston 102 is pushed to the front end of the suction cylinder 10, and then pulled back to a preset position, for example, the position of the volume scale 1014 corresponding to the preset blood volume of 1.6 ml;

then pulling out a needle protecting cap sleeved outside the blood sampling needle head 20 in advance, and positioning an artery so as to enable the blood sampling needle head 20 to be inserted into the patient at an angle of 45-90 degrees with the skin of the patient, when the blood sampling needle head 20 enters the artery of the patient, the arterial blood of the patient can naturally flow into the suction tube 10, the air in the suction tube 10 can be rapidly discharged through the exhaust holes in the exhaust hole stones 1022, when the blood liquid level reaches a preset position, the exhaust holes in the exhaust hole stones 1022 can be closed when wet, and at the moment, arterial blood sampling is completed;

finally, after the arterial blood of the patient is collected, the anti-needle-stick injury/leakage-proof sleeve 30 can be slid forward until the disc-shaped sealing cotton block 301 in the opening at the front end of the sleeve is abutted to the skin puncture part of the patient, the anti-needle-stick injury/leakage-proof sleeve 30 is stabilized, and the suction cylinder 10 and the blood collection needle 20 connected with the suction cylinder are pulled backward until the blood collection needle 20 is accommodated in the anti-needle-stick injury/leakage-proof sleeve 30.

To the above-mentioned operation process, can realize the blood sampling syringe needle 20 is drawn from the instant that is closed by the sealed cover promptly for really can be better avoid arousing the acupuncture to hinder and arouse cross infection, and pull out from this application while promote forward the prevent acupuncture hinder/leak protection sleeve 30 to make it with the blood sampling syringe needle 20 cover close can, relevant operation really the maneuverability is good and handle nature is good, medical personnel's hand is kept away from all the time the blood sampling syringe needle 20 tip does not need worry to be injured by the acupuncture.

And finally, pressing the skin puncture part of the patient for 5-10 minutes by using sterile gauze while pulling out the medical device.

In conclusion, the invention has the advantages of simple integral structure, easy implementation, easy operation, strong practicability, strong specificity and low manufacturing cost, does not need to increase too much cost in the structural improvement and the technical improvement, ensures that the invention has good market popularization value, is very popular and can be effectively popularized.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all changes in equivalent structure or equivalent flow, which are made by using the contents of the specification and the drawings of the present invention, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a prevent that acupuncture hinders and leak protection artery hemostix which characterized in that: comprises a blood sampling aspirator, a blood sampling needle head and a needle-prick prevention/leakage prevention sleeve for covering the blood sampling needle head;

2. The needle stick injury and leak proof arterial hemostix of claim 1, wherein: the blood sampling aspirator comprises an aspiration cylinder, an exhaust sealing piston and a push rod;

3. The needle stick injury and leakage proof arterial hemostix of claim 2, wherein: the inner wall of an opening at the front end of the anti-needle-prick/anti-leakage sleeve is inwards and convexly provided with a limiting ring A which is integrally formed with the anti-needle-prick/anti-leakage sleeve, and the inner diameter of the limiting ring A is smaller than the outer diameter of the suction cylinder and larger than the outer diameter of the needle handle;

the disc-shaped sealing cotton block is fixedly adhered in the limiting ring A.

4. The needle stick injury and leakage proof arterial hemostix of claim 3, wherein: a plurality of notches are uniformly formed in the center of the disc-shaped sealing cotton block to the periphery of the disc-shaped sealing cotton block, so that the disc-shaped sealing cotton block is uniformly divided into a plurality of fan-shaped sealing parts.

5. The needle stick injury and leakage proof arterial hemostix of claim 4, wherein: the length of the anti-needle-stick/anti-leakage sleeve is greater than that of the blood sampling needle head and less than that of the suction barrel.

6. The needle stick injury and leakage proof arterial hemostix of claim 5, wherein: a limiting ring B integrally formed with the anti-needle-prick/anti-leakage sleeve is inwards and convexly arranged on the inner wall of the opening at the rear end of the anti-needle-prick/anti-leakage sleeve, and the inner diameter of the limiting ring B is slightly larger than the outer diameter of the suction cylinder;

7. The device according to claim 6, wherein the device comprises: the outer wall of the suction cylinder is provided with capacity scales along the length direction, and a plurality of flexible retaining rings are respectively provided with a notch groove which does not shield the capacity scales.

8. The needle stick injury and leak proof arterial hemostix of claim 7, wherein: the anti-needling/anti-leakage sleeve and the suction barrel are made of transparent plastic materials, and the outer wall of the anti-needling/anti-leakage sleeve is provided with a plurality of circles of anti-skid lines.

9. The needle stick injury and leak proof arterial hemostix according to any one of claims 2-8, wherein: the luer connector housing has a seal attached thereto, and the needle has a rear end opening against the seal when threaded onto the luer connector housing.

10. The needle stick injury and leak proof arterial hemostix according to any one of claims 2-8, wherein: the air-dischargeable sealing piston comprises a cylindrical plug body and a plurality of vent stones;