CN215504881U - Disposable low-residue anti-acupuncture safety syringe - Google Patents
Disposable low-residue anti-acupuncture safety syringe Download PDFInfo
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- CN215504881U CN215504881U CN202121652697.2U CN202121652697U CN215504881U CN 215504881 U CN215504881 U CN 215504881U CN 202121652697 U CN202121652697 U CN 202121652697U CN 215504881 U CN215504881 U CN 215504881U
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- sealing seat
- needle
- push rod
- barb
- outer sleeve
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Abstract
The utility model discloses a disposable low-residue anti-acupuncture safety syringe, which comprises: the needle head component comprises a sealing seat arranged at the top end of the outer sleeve, a core rod communicated with the sealing seat is arranged on the sealing seat, and a steel needle is fixedly arranged in the core rod; the outer wall of the front end of the push rod is provided with a rubber plug sealed with the inside of the outer sleeve, the top end of the push rod is provided with a barb matched with the bottom of the sealing seat, and the middle part of the push rod is circumferentially provided with a breaking table; before the injector is used, the barb is positioned below the sealing seat, and the top end of the core rod penetrates through the upper end surface of the sealing seat.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a disposable low-residue anti-acupuncture safety syringe.
Background
Because the existing disposable sterile syringe has the phenomenon of repeated use, the cross infection of germs is increased, and potential harm is brought to users. Meanwhile, after the injection of the injector is finished, the phenomenon that the needle tip is exposed and stabs clinical users is also not clear. The residual liquid medicine of a part of the anti-acupuncture syringe is too much, so that the dosage of the injected medicine is not enough, and the waste is caused. In order to eliminate the injury to medical personnel caused by the repeated use of the syringe and the exposed needle point, a disposable low-residue safety syringe capable of preventing needle prick is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks or shortcomings, it is an object of the present invention to provide a disposable low-residue, needlestick-resistant safety syringe.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a disposable low residue, needle stick resistant safety syringe comprising: the needle head component comprises a sealing seat arranged at the top end of the outer sleeve, a core rod communicated with the sealing seat is arranged on the sealing seat, and a steel needle is fixedly arranged in the core rod; the outer wall of the front end of the push rod is provided with a rubber plug sealed with the inside of the outer sleeve, the top end of the push rod is provided with a barb matched with the bottom of the sealing seat, and the middle part of the push rod is circumferentially provided with a breaking table; before the injector is used, the barb is positioned below the sealing seat, the top end of the core rod penetrates through the upper end face of the sealing seat, and the front positioning ring at the upper end of the core rod is clamped with the front prevention boss of the outer sleeve.
The sealing device is characterized in that an inner hole is formed in the sealing seat, a front positioning boss and a rear positioning boss are arranged in the inner hole, a sealing boss is arranged on the mandrel, and the sealing boss is clamped at the front positioning boss and the rear positioning boss.
The sealing seat is internally provided with a barb table, and when the rubber plug moves to the position of the shaft shoulder of the outer sleeve, the barb is clamped with the barb table in the stepped hole of the sealing seat.
The barb table is provided with a positioning inclined plane for locking the barb, and a liquid discharge groove communicated with the outer sleeve is arranged below the barb table.
The tail end of the sealing seat is provided with a tail wing, the rubber plug is provided with a tail wing positioning ring matched with the tail wing, and when the rubber plug moves to the shaft shoulder position of the outer sleeve, the tail wing of the sealing seat is clamped with the tail wing positioning ring of the rubber plug.
The top circumference of push rod has seted up sealed bulge loop, seted up preceding location platform and back location platform in the plug, sealed bulge loop and preceding location platform and back location platform looks block.
The tail end of the push rod is provided with a separation blade used for preventing the tail part of the push rod from being pushed by mistake before use.
A rear-prevention boss is arranged on the inner wall of the tail part of the outer sleeve; the end part of the push rod is provided with a shaft shoulder, the rubber plug is clamped with the front end face of the shaft shoulder, and after the push rod rebounds, the rear end face of the shaft shoulder is clamped and positioned with the rear-prevention boss to prevent the needle head part from sliding out of the outer sleeve.
And a sealing line in interference fit with the inner wall of the outer sleeve is arranged outside the rubber plug.
And a protective cap is also arranged on the steel needle.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a disposable low-residue anti-acupuncture safety syringe, which can complete the needle return action of a steel needle by matching a jacket, a core rod, a sealing seat and a push rod, so that the steel needle can be accommodated in an outer sleeve when discarded after the syringe is used, and the problem that the needle head is exposed to hurt medical care personnel after injection is effectively solved; the liquid discharge groove and the tail wing of the sealing seat are matched with the tail wing positioning ring of the rubber plug, so that all liquid in the syringe is discharged, and the residual quantity of the liquid medicine is reduced; through the design of the breaking table on the push rod, the push rod can be easily broken after the steel needle is returned, the self-destruction of the injector is completed, and the defect that the needle head of the injector is exposed is effectively overcome; through the design of push rod separation blade, can prevent mistake pushing down operation to the push rod, prevent that the barb on push rod top from moving in advance to the seal receptacle in falling the platform, prevent to press the push rod carelessly, make the syringe be in operating condition, cause the waste of syringe.
The utility model improves the safety of the injector, does not influence the injection method, discharges the liquid medicine in the injector as far as possible, and is particularly suitable for the injection of vaccines in disease control centers and the injection of patients in various medical units. The device has the advantages of scientific and reasonable design, simple structure, reliable effect and low cost.
Drawings
FIG. 1 is a first schematic view of a disposable low residue anti-needle-stick safety syringe according to the present invention;
FIG. 2 is a schematic structural view of a needle holder mechanism of the disposable low-residue anti-acupuncture safety syringe of the present invention;
FIG. 3 is a schematic structural view of a sealing seat of the disposable low-residue anti-needle-prick safety syringe of the present invention;
FIG. 4 is a cross-sectional view of the seal holder of the disposable low residue anti-needle-stick safety syringe of the present invention;
FIG. 5 is a schematic view of a second embodiment of the disposable low-residue anti-needle-stick safety syringe of the present invention;
fig. 6 is a third structural schematic view of the disposable low-residue anti-needle-stick safety syringe of the present invention.
In the figure, 1000-jacket; 2000-push rod; 3000-rubber plug; 4000-core rod; 5000-sealing seat; 6000-steel needle; 7000-protective cap; 1001-front boss prevention; 1002-protecting cap locking ring; 1003-inner seal ring; 1004-rear boss prevention; 2001-barbs; 2002-sealing convex ring; 2003-upright posts; 2004-a baffle plate; 2005-breaking station; 3001-seal line; 3002-empennage locating ring; 3003-front positioning table; 3004-rear positioning table; 4001-spacing steel needle ring; 4002-front positioning ring; 4003-a rear positioning ring; 4004-sealing boss; 5001-seal ring; 5002-front positioning boss; 5003-rear boss; 5004 liquid discharge tank; 5005-empennage; 5006-locating inclined plane; 5007-barb table.
Detailed Description
The present invention will now be described in detail with reference to the drawings, wherein the described embodiments are only some, but not all embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of the present invention.
As shown in fig. 1-6, the present invention provides a disposable low residue safety syringe against needle sticks comprising: the needle comprises an outer sleeve 1000 and a push rod 2000 capable of sliding in the outer sleeve 1000, wherein a needle head part capable of rebounding is mounted at the end part of the outer sleeve 1000, the needle head part comprises a sealing seat 5000 mounted at the top end of the outer sleeve 1000, a core rod 4000 communicated with the sealing seat 5000 is mounted on the sealing seat 5000, and a steel needle 6000 is fixedly mounted in the core rod 4000; a rubber plug 3000 sealed with the inside of the outer sleeve 1000 is installed on the outer wall of the front end of the push rod 2000, a barb 2001 matched with the bottom of the sealing seat 5000 is arranged at the top end of the push rod 2000, and a breaking table 2005 is arranged in the middle of the push rod 2000 in the circumferential direction; before the injector is used, the barb 2001 is located below the sealing seat 5000, the top end of the mandrel 4000 penetrates through the upper end face of the sealing seat 5000, the front positioning ring 4002 at the upper end of the mandrel 4000 is clamped with the front prevention boss 1001 of the jacket 1000, the steel needle 6000 is further provided with a protective cap 7000, the outer wall of the end portion of the jacket 1000 is provided with a protective cap locking ring 1002, and the protective cap 7000 is locked with the protective cap locking ring 1002 after being installed to prevent falling off.
As shown in fig. 2, an inner hole is formed in the seal seat 5000, a front positioning boss 5002 and a rear positioning boss 5003 are arranged in the inner hole, a seal boss 4004 is arranged on the mandrel 4000, and the seal boss 4004 is clamped at the front positioning boss 5002 and the rear positioning boss 5003 to prevent the mandrel 4000 carrying the steel needle 6000 from falling off from the needling prevention mechanism. Specifically, the core rod 4000 is in interference fit with a straight cylindrical mounting hole of the seal seat 5000, and the front positioning ring 4002 of the core rod 4000 is matched with the front boss of the outer sleeve 1000, so that the core rod 4000 is prevented from extending forwards from the anti-needling mechanism; the rear positioning ring 4003 of the core rod 4000 is matched with the rear positioning boss 5003 of the sealing seat 5000, so that the core rod 4000 is prevented from retreating towards the tail part of the anti-needling device, and the steel needle 3000 is prevented from retreating; the seal boss 4004 of the core rod 4000 is wrapped by the seal seat 5000 in interference seal fit.
In addition, the steel needle 6000 fixedly arranged in the core rod 4000 specifically comprises: a limiting steel needle ring 4001 is arranged in the core rod 4000, and the limiting steel needle ring 4001 limits and fixes the steel needle 6000.
As shown in fig. 3 and 4, a barb block 5007 is further formed in the seal seat 5000, and when the rubber plug 3000 moves to the shoulder position of the outer sleeve 1000, the barb 2001 is engaged with the barb block 5007 in the stepped hole of the seal seat 5000. A positioning inclined plane 5006 for locking the barb 2001 is arranged on the barb table 5007, and a liquid discharge groove 5004 communicated with the outer sleeve 1000 is arranged below the barb table 5007; the end of seal receptacle 5000 is provided with fin 5005, seted up on the plug 3000 with fin 5005 assorted fin position circle 3002, when plug 3000 removed the shaft shoulder position of overcoat 1000, seal receptacle 5000's fin 5005 and plug 3000 fin position circle 3002 looks block.
Specifically, the top of the push rod 2000 is provided with a vertical column 2003, a barb 2001 is installed on the vertical column 2003, the top of the push rod 2000 is circumferentially provided with a sealing convex ring 2002, a front positioning table 3003 and a rear positioning table 3004 are arranged in the rubber plug 3000, and the sealing convex ring 2002 is clamped with the front positioning table 3003 and the rear positioning table 3004; the end of the push rod 2000 is provided with a blocking piece 2004 for preventing the end of the push rod from being pushed by mistake before use.
When the top end of the blocking piece 2004 is abutted against the bottom end face of the outer sleeve 1000; the blocking piece 2004 is used for limiting the push rod 2000 to realize the operation of preventing pressing down by mistake; before the injector is used, the pushing rod 2000 is prevented from being pressed to the bottom by carelessness, and the barb 2001 at the top end of the pushing rod 2000 is prevented from moving to the barb table 5007 on the sealing seat 5000 in advance and being locked in advance, so that the waste of the injector is caused. When injection is needed, the blocking piece 2004 is removed, then the push rod 2000 is pressed, and when the rubber plug 3000 runs to the shaft shoulder position of the outer sleeve 1000, the barb 2001 is clamped with the barb table 5007 in the stepped hole of the seal seat 5000, so that the dropping force is larger than the friction force of the matching of the seal ring 5001 of the seal seat 5000 and the inner seal ring 1003 of the outer sleeve 1000.
Preferably, the push rod 2000 is circumferentially provided with a breaking table 2005; the breaking table 2005 is located below the stopper 3000.
Preferably, the inner wall of the tail part of the outer sleeve 1000 is provided with a rear-prevention boss 1004; the end of the push rod 2000 is provided with a shaft shoulder, the rubber plug 3000 is clamped with the front end face of the shaft shoulder, and after the push rod 2000 rebounds, the rear end face of the shaft shoulder is clamped and positioned with the rear-prevention boss 1004 to prevent the needle head part from sliding out of the outer sleeve 1000. Plug 3000 and the inner wall interference fit of overcoat 1000, exemplarily, plug 3000 is provided with outside and coats 1000 inner wall interference fit's sealing line 3001.
When the rubber plug 3000 runs to the shaft shoulder position of the jacket 1000, the tail wing 5005 of the seal seat 5000 extends into the tail wing positioning ring of the rubber plug 3000, so that all the liquid medicine in the jacket 1000 is discharged from the liquid discharge groove 5004 of the seal seat 5000 through the mandril 4000 and the steel needle 6000.
In the utility model, the lower end of the steel needle 6000 is fixedly arranged in the core rod 4000, and the steel needle 6000 is adhered in the central mounting hole of the core rod 4000.
The working principle and the process of the utility model are as follows:
1. before the injector is used, the barb 2001 on the push rod 2000 is positioned below the sealing seat 5000;
2. when the injector is used, the blocking piece 2004 is removed, the push rod 2000 is pulled outwards to absorb liquid, then the push rod 2000 is pressed, when the rubber plug 3000 runs to the shaft shoulder position of the coat 1000, the barb 2001 on the push rod 2000 is locked with the barb table 5007 on the sealing seat 5000, the empennage 5005 of the sealing seat 5000 is locked with the empennage positioning ring of the rubber plug 3000, and the injection operation is completed, as shown in fig. 5;
3. when the injector is discarded after use, the push rod 2000 is pulled towards the tail part of the outer sleeve 1000, and the barb 2001 on the push rod 2000 is locked and connected with the barb table 5007 on the sealing seat 5000 into a whole; the push rod 2000 drives the seal seat 5000, the core rod 4000 and the steel needle 6000 which are connected into a whole to move into the outer sleeve 1000;
4. when the breaking platform 2005 on the push rod 2000 moves to the tail of the sheath 1000, the push rod is broken off from the breaking platform 2005 of the push rod, and the syringe completes the needle return action, as shown in fig. 6.
It will be appreciated by those skilled in the art that the above embodiments are merely preferred embodiments of the utility model, and thus, modifications and variations may be made in the utility model by those skilled in the art, which will embody the principles of the utility model and achieve the objects and objectives of the utility model while remaining within the scope of the utility model.
Claims (10)
1. A disposable low residue safety syringe against needle sticks comprising: the needle comprises an outer sleeve (1000) and a push rod (2000) capable of sliding in the outer sleeve (1000), wherein a rebounding needle head piece is installed at the end part of the outer sleeve (1000), the needle head piece comprises a sealing seat (5000) installed at the top end of the outer sleeve (1000), a core rod (4000) communicated with the sealing seat (5000) is installed on the sealing seat (5000), and a steel needle (6000) is fixedly installed in the core rod (4000); the outer wall of the front end of the push rod (2000) is provided with a rubber plug (3000) sealed with the inside of the outer sleeve (1000), the top end of the push rod (2000) is provided with a barb (2001) matched with the bottom of the sealing seat (5000), and the middle part of the push rod (2000) is circumferentially provided with a breaking platform (2005); before the injector is used, the barb (2001) is positioned below the sealing seat (5000), the top end of the mandrel (4000) penetrates through the upper end face of the sealing seat (5000), and the front positioning ring (4002) at the upper end of the mandrel (4000) is clamped with the front-preventing boss (1001) of the outer sleeve (1000).
2. The disposable low-residue needle-prick-proof safety syringe according to claim 1, characterized in that the sealing seat (5000) is provided with an inner hole, a front positioning boss (5002) and a rear positioning boss (5003) are arranged in the inner hole, the core rod (4000) is provided with a sealing boss (4004), and the sealing boss (4004) is clamped and positioned at the front positioning boss (5002) and the rear positioning boss (5003).
3. The disposable low residue safety syringe against needle prick as defined in claim 2 wherein the sealing seat (5000) has a barb (5007) formed therein, and when the rubber plug (3000) moves to the shoulder position of the sheath (1000), the barb (2001) engages with the barb (5007) formed in the stepped bore of the sealing seat (5000).
4. The disposable low-residue safety syringe against needle prick as defined in claim 3 is characterized in that the barb table (5007) is provided with a positioning inclined plane (5006) for locking the barb (2001), and a liquid discharge groove (5004) communicated with the jacket (1000) is arranged below the barb table (5007).
5. The disposable low-residue safety syringe with needle prick prevention according to claim 1 or 2, wherein the tail end of the sealing seat (5000) is provided with a tail wing (5005), the rubber plug (3000) is provided with a tail wing positioning ring (3002) matched with the tail wing (5005), and when the rubber plug (3000) moves to the shaft shoulder position of the outer sleeve (1000), the tail wing (5005) of the sealing seat (5000) is engaged with the tail wing positioning ring (3002) of the rubber plug (3000).
6. The disposable low-residue needle-prick prevention safety syringe according to claim 1, characterized in that a sealing convex ring (2002) is arranged on the top of the push rod (2000) in the circumferential direction, a front positioning table (3003) and a rear positioning table (3004) are arranged in the rubber plug (3000), and the sealing convex ring (2002) is clamped with the front positioning table (3003) and the rear positioning table (3004).
7. The disposable low residue safety syringe of claim 1 wherein the end of the plunger (2000) is provided with a tail (2004) to prevent inadvertent pushing prior to use.
8. The disposable low residue safety syringe of claim 1 wherein the inner wall of the tail of the outer sleeve (1000) is provided with a rear boss (1004); the end part of the push rod (2000) is provided with a shaft shoulder, the rubber plug (3000) is clamped with the front end face of the shaft shoulder, and when the push rod (2000) rebounds, the rear end face of the shaft shoulder is clamped and positioned with the rear-prevention boss (1004) to prevent the needle head part from sliding out of the outer sleeve (1000).
9. The disposable low residue safety syringe against needle prick according to claim 1, wherein the plug (3000) is externally provided with a sealing line (3001) which is in interference fit with the inner wall of the sheath (1000).
10. The disposable low residue needle stick safety syringe of claim 1 wherein the steel needle (6000) is further provided with a protective cap (7000).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121652697.2U CN215504881U (en) | 2021-07-20 | 2021-07-20 | Disposable low-residue anti-acupuncture safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121652697.2U CN215504881U (en) | 2021-07-20 | 2021-07-20 | Disposable low-residue anti-acupuncture safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215504881U true CN215504881U (en) | 2022-01-14 |
Family
ID=79814133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121652697.2U Active CN215504881U (en) | 2021-07-20 | 2021-07-20 | Disposable low-residue anti-acupuncture safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215504881U (en) |
-
2021
- 2021-07-20 CN CN202121652697.2U patent/CN215504881U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220512 Address after: 325000 room 406, No. 989, Binhai Second Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Qiujing medical instrument (Zhejiang) Co.,Ltd. Address before: 325013 No. 176-178, Xingnan Road, Yaoxi street, Longwan District, Wenzhou City, Zhejiang Province Patentee before: Ni Yijian |
|
| TR01 | Transfer of patent right |