CN109200396A - Needleless injection attachment device - Google Patents

Needleless injection attachment device Download PDF

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Publication number
CN109200396A
CN109200396A CN201810769773.4A CN201810769773A CN109200396A CN 109200396 A CN109200396 A CN 109200396A CN 201810769773 A CN201810769773 A CN 201810769773A CN 109200396 A CN109200396 A CN 109200396A
Authority
CN
China
Prior art keywords
pawl
take
connecting tube
takes
bayonet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810769773.4A
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Chinese (zh)
Other versions
CN109200396B (en
Inventor
覃万翔
李雪薇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
First Affiliated Hospital of PLA Military Medical University
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First Affiliated Hospital of PLA Military Medical University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by First Affiliated Hospital of PLA Military Medical University filed Critical First Affiliated Hospital of PLA Military Medical University
Priority to CN201810769773.4A priority Critical patent/CN109200396B/en
Publication of CN109200396A publication Critical patent/CN109200396A/en
Application granted granted Critical
Publication of CN109200396B publication Critical patent/CN109200396B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/30Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5086Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile for indicating if defective, used, tampered with or unsterile

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The present invention relates to Needleless injection fields, and in particular to Needleless injection attachment device, including connecting tube, draw back plate and take off rotation mechanism is set on the inner tubal wall of connecting tube there are two the first arc groove, is equipped with the first bayonet on the cell wall of each first arc groove;Draw back plate is equipped with the second arc groove and the second bayonet;Taking off rotation mechanism includes that several take off turns unit, it each takes off and turns unit and include connecting rod, first take off and turn pawl and second and take off and turn pawl, first takes off and turns pawl and be fixed on connecting rod one end, second takes off and turns pawl and be fixed on the connecting rod other end, and first takes off and turn pawl and second and take off and turn pawl antarafacial, and connecting rod is rotatably dispose in the tube wall of connecting tube, and torsional spring is provided between connecting rod and connecting tube, torsional spring in the raw when, first takes off and turns pawl and be located in the first bayonet, and second takes off and turn pawl and be located at the second bayonet side.It when using the technical program, conveniently connects the syringe on injection pen, mitigates patient's expense burden.

Description

Needleless injection attachment device
Technical field
The present invention relates to Needleless injection fields, and in particular to Needleless injection attachment device.
Background technique
Syringe is from formal for existing more than 300 years till now history of medicine.Traditional syringe was once brought to the mankind Many conveniences, but with mankind itself's improvement of living standard, its own such as easily causes infectious disease to pass there are some problems It broadcasts, needle head infection, needle sharing, pain, long term injections can generate the unfavorable factors such as subcutaneous nodule.
Foreign countries' report display, in the medical worker in the U.S. 4,400,000, every year because of number that syringe needle or medical sharp device are stabbed Up to 800,000, the etesian needle of nurse is stabbed up to 80~1,000,000 times;The case where China, also allows of no optimist: due to unsafe injection Caused infection case is growing, causes direct economic loss innumerable, and 87.5% nurse has injection sharp instrument thorn Wound experience.Meanwhile diabetic needs regular replenishment insulin to reduce blood glucose, injection is undoubtedly best mode, and by Frequently in injection, intramuscular injection is easy to produce the adverse reactions such as inflammation, allergy, muscular atrophy.
Safety injection is always the social concern of whole world concern, and in developing country, annual children receive 5,500,000,000 notes It penetrates, wherein 10% inoculation is unsafe.Various injections of the China every year including immunity inoculation are about 3,000,000,000 times, After some regional syringes that there is not sterilized reuse and syringe needle, disposable syringe use the phenomenon that reflux market, This constitutes larger threat to the patient that needs are injected.
Existing needleless injector has well solved this problem, and needleless injector includes injection pen, pencil and takes medicine The piston of pencil tail portion is fixed on the push rod of injection pen by interface when in use, and pencil head is connect with medicine interface is taken After liquid drug can be adsorbed in medicine bottle, after taking medicine interface to unload, by pencil head pressing on human injection position, make Injection pen vertical skin surface, will be in the injecting liquid drug to human body in pencil by the high pressure in injection pen.
In the case where replacing liquid medicine injection, in order to guarantee safety, new pencil is before needed replacing in the next use;And medicine The expense of pipe is a kind of burden unavoidably for patients costly, and is required to lose pencil after use every time, It is a kind of waste of resource.
Summary of the invention
The purpose of the present invention is to provide a kind of attachment devices conveniently connected the syringe on injection pen.
In order to achieve the above objectives, technical solution of the present invention provides Needleless injection attachment device, including connecting tube, draw back plate With take off rotation mechanism, set on the inner tubal wall of the connecting tube there are two the first arc groove, be all provided on the cell wall of each first arc groove There is the first bayonet;The draw back plate is slideably positioned in connecting tube, and one end of draw back plate is fixedly connected with the push rod of injection pen, The other end of the draw back plate is equipped with through slot, is fixed with baffle on the side wall of the through slot, baffle one end is formed with through slot side wall The second bayonet is formed between the slot bottom of second arc groove, baffle and through slot;
The rotation mechanism of taking off includes that several take off turns unit, each takes off and turns unit and include connecting rod, first take off and turn pawl and second It takes off and turns pawl, described first takes off and turn pawl and be fixed on connecting rod one end, and described second takes off and turn pawl and be fixed on the connecting rod other end, and described First takes off and turns pawl and second and take off and turn pawl antarafacial, and the connecting rod is rotatably dispose in the tube wall of connecting tube, and connecting rod and connection Be provided with torsional spring between pipe, torsional spring in the raw when, described first takes off and turns pawl and be located in the first bayonet, and described second takes off and turn Pawl is located at the second bayonet side.
This programme has the technical effect that 1, by being fixedly connected with pipe on injection pen, will when needing liquid medicine injection It is pushed into the first arc groove at the crimping of syringe, then rotates syringe, syringe can be caught in the first bayonet fixed.It is rotating It takes off during syringe, at the crimping of syringe with first and turns pawl and contact and push first to take off to turn pawl rotation, to pass through connecting rod It drives second to take off and turns pawl rotation, after second takes off the core bar contact for turning pawl and syringe, and then drive core bar rotation, and by core bar It is caught in the second bayonet, to reach the connection by syringe and injection pen, replacement of the syringe to pencil is realized, to reduce The expense of patient's payment.
2, first take off turn pawl by connecting rod drive second take off turn pawl rotation during, drive core bar rotated with syringe, To have the function that prevent the core bar of syringe from being twisted into two parts.
3, during liquid medicine injection, second takes off and turns pawl and can limit to draw back plate, to prevent the work of syringe Plug breaks through syringe, it is ensured that patient body is injury-free.
4, it first takes off and turns that pawl is contacted with the crimping of syringe and second takes off when turning the core bar of pawl and syringe and contacting, can It is marked in marking on syringe and core bar, when removing syringe and abandoning not in time, it is easy to distinguish whether syringe used, To effectively prevent syringe to reuse, it is ensured that patient body health.
Further, the tube wall of the connecting tube is equipped with strip-shaped hole, and the draw back plate is equipped with groove, in the groove Equipped with retaining mechanism, the retaining mechanism includes spring and locking bar, and one end of the spring is fixedly connected with the slot bottom of groove, The other end of spring is fixedly connected with locking bar, and the locking bar can be hit by a bullet from groove to strip-shaped hole.The technology of this programme is imitated Fruit is: after syringe extracts medical fluid, being locked by retaining mechanism to draw back plate, so that core bar be locked, by syringe Injection is unlocked again after alignment skin.
Further, the tube wall of the connecting tube is equipped with through-hole, the through-hole close to second bayonet one end, and through-hole with Strip-shaped hole is located along the same line.This programme have the technical effect that injection after, locking bar under the action of the spring bullet to logical In hole, to prevent draw back plate from continuing to move to, so that piston be avoided to break through syringe, it is ensured that patient escapes injury.
Further, the tube wall of the connecting tube is equipped with slide opening, is fixed with push-pull rod, push-pull rod on the push rod of injection pen Across slide opening and it is slideably positioned in slide opening.This programme has the technical effect that slide opening can limit the movement routine of push-pull rod It is fixed, it is ensured that draw back plate and core bar steadily move, to realize smoothly injection.
Further, the outer tube wall of the connecting tube is equipped with sliding slot, and sliding is provided with stopper in the sliding slot, described Stopper can stop push-pull rod to slide.This programme has the technical effect that when patient needs to be performed in multiple times injection, by stirring Stopper stops push-pull rod, to realize the blocking to push rod, draw back plate and core bar, and then realizes that medical fluid point is more It is secondary to be injected.
Detailed description of the invention
Fig. 1 is cross-sectional view of the invention;
Fig. 2 is the partial enlarged view in Fig. 1 at A;
Fig. 3 is schematic diagram when disposable syringe takes medicine;
Fig. 4 is the left view of connecting tube in Fig. 1;
Fig. 5 is the schematic diagram that syringe enters the first arc groove;
Fig. 6 is the schematic diagram that syringe is caught in the first bayonet;
Fig. 7 is the schematic diagram that core bar enters the second arc groove;
Fig. 8 is the schematic diagram that core bar enters the second bayonet;
Fig. 9 is to take off the schematic diagram for turning unit;
Figure 10 is the right view of connecting tube in Fig. 1.
Specific embodiment
Below by the further details of explanation of specific embodiment:
Appended drawing reference in Figure of description includes: connecting tube 1, draw back plate 2, syringe 3, piston 4, core bar 5, handwriting 6, One spring 7, push rod 8, the first arc groove 9, the first bayonet 10, push-pull rod 11, through slot 12, baffle 13, the second arc groove 14, second Bayonet 15, groove 16, second spring 17, locking bar 18, through-hole 19, strip-shaped hole 20, connecting rod 21, first, which take off, turns pawl 22, second It takes off and turns pawl 23, torsional spring 24, sliding slot 25, stopper 26.
Needleless injection attachment device as shown in Figure 1, 2, 3, including connecting tube 1, draw back plate 2 and rotation mechanism is taken off, connecting tube 1 Left end connect with disposable syringe, disposable syringe includes syringe 3, piston 4 and core bar 5, and 3 right end of syringe is to convex up and down Part out is known as syringe crimping;Piston 4 is slideably positioned in syringe 3, and core bar 5 is fixedly connected with piston 4,5 right end of core bar The oriented core bar crimping protruded up and down.The right end of connecting tube 1 is connect with injection pen, in the present embodiment, injection pen include handwriting 6, First spring 7 and push rod 8, handwriting 6 are fixedly connected with 1 right end of connecting tube, and 7 right end of the first spring is fixedly connected with handwriting 6, and first 7 left end of spring is fixedly connected with push rod 8;Certain injection pen can also use other pressurizing devices in the prior art.
As shown in Figure 4,5, 6, two the first arc grooves 9 up and down are provided on the inner tubal wall of connecting tube 1, positioned at the first of upper end It is provided with the first bayonet 10 on the right cell wall of arc groove 9, is also provided with the first bayonet on the left cell wall of the first arc groove 9 of lower end 10.As shown in Fig. 2, draw back plate 2 is rounded, draw back plate 2 is slideably positioned in connecting tube 1, right end and the push rod 8 of draw back plate 2 Left end is fixedly connected, and the front and back side of push rod 8 is respectively and fixedly provided with push-pull rod 11, and in addition the left end of draw back plate 2 is provided with through slot 12.As Fig. 7, Shown in 8, it is fixed with baffle 13 on the left side wall of 12 lower end of through slot, forms the second arc between 12 right side wall of 13 right end of baffle and through slot Shape slot 14 forms the second bayonet 15 between baffle 13 and the slot bottom of through slot 12 (the second bayonet 15 is shown in Fig. 2);Likewise, through slot 12 Also baffle 13 is fixed on the right side wall of upper end, 13 left end of baffle and 12 left side wall of through slot form the second arc groove 14, baffle 13 The second bayonet 15 is formed between the slot bottom of through slot 12.
As shown in Fig. 2, being provided with two grooves 16 up and down on the side wall of draw back plate 2, locking is provided in each groove 16 Mechanism, retaining mechanism include second spring 17 and locking bar 18, and one end of spring is fixedly connected with the slot bottom of groove 16, spring The other end is fixedly connected with locking bar 18.Through-hole 19 is provided on the tube wall of connecting tube 1, locking bar 18 can be hit by a bullet to logical from groove 16 In hole 19.As shown in figure 3, being provided with strip-shaped hole 20 on the tube wall of connecting tube 1, strip-shaped hole 20 and through-hole 19 are located on horizontal line, lock Tight item 18 can also be hit by a bullet from groove 16 to strip-shaped hole 20.
It takes off rotation mechanism and includes two and take off and turn unit, include connecting rod 21, first take off and turn as shown in figure 9, each taking off and turning unit Pawl 22 and second is taken off and turns pawl 23, and first takes off and turn pawl 22 and be fixed on 21 left end of connecting rod, and second takes off and turn pawl 23 and be fixed on connecting rod 21 Right end, opposite and for 21 place perpendicular of connecting rod, first takes off and turns pawl 22 and turn forward, and second takes off and turn pawl 23 and retreat Tiltedly.As shown in Fig. 2, connecting rod 21 is rotatably dispose in the tube wall of connecting tube 1, torsion is provided between connecting rod 21 and connecting tube 1 Spring 24;When torsional spring 24 in the raw when, as shown in figure 4, first takes off and turns pawl 22 and be located in the first bayonet 10;As shown in fig. 7, Second takes off and turns pawl 23 and be located at the rear side of the second arc groove 14, while being located at 15 side of the second bayonet.
In addition, as shown in Figure 10, slide opening is provided on the tube wall of connecting tube 1, push-pull rod 11 passes through slide opening, and push-pull rod 11 slides It is set in slide opening, the free end of push-pull rod 11 is located at outside connecting tube 1.The cunning of "convex" shaped is provided on the outer tube wall of connecting tube 1 Slot 25, in the present embodiment, sliding slot 25 is opened in 1 middle part of connecting tube, and sliding is provided with stopper 26 in sliding slot 25, stirs figure downwards When stopper 26 in 10, stopper 26 can stop push-pull rod 11 to slide backward.
As shown in Figure 1, first the syringe of disposable syringe 3 is fixed in connecting tube 1, while core bar 5 being fixed on and is pushed away On pulling plate 2, when fixed, as shown in figure 5, syringe crimping is directed at the first arc groove 9, at this time as shown in fig. 7, core bar is rolled up Side is directed at the second arc groove 14;Then syringe 3 as shown in Figure 5 is moved backward, core bar 5 as shown in Figure 7 can be with syringe 3 backward It is mobile, when core bar 5 offsets with through slot 12, rotate clockwise in syringe 3 as shown in Figure 5 to the first bayonet 10 as shown in Figure 6.
As shown in figure 5, during rotating clockwise syringe 3, syringe crimping is taken off with first to be turned pawl 22 and contacts, to push First takes off and turns pawl 22 and turn to position as shown in Figure 6 against gesture needle.As shown in figure 9, first takes off the process that pawl 22 rotates counterclockwise that turns In, it drives second to take off by connecting rod 21 and turns pawl 23 and rotate counterclockwise;It takes off and turns pawl 23 and core bar spinning when as shown in Figure 7 second When touching, so that core bar 5 is rotated counterclockwise to the second bayonet 15 as shown in Figure 8 (the second bayonet 15 is shown in Fig. 2).
Then by 3 left end of syringe as shown in Figure 1 insertion equipped with medical fluid bottle in, and pull push-pull rod 11 as shown in Figure 10 to Preceding movement pulls push-pull rod 11 as shown in Figure 1 to move right, so that draw back plate 2 be driven to move right, and then drive core bar 5 It moves right (this during the first spring 7 compressed) with piston 4, when core bar 5 and piston 4 are moved to position as shown in Figure 3, Locking bar 18 is hit by a bullet from groove 16 to strip-shaped hole 20 under the action of second spring 17, is locked to draw back plate 2, at this time medicine Liquid is drawn in syringe 3.
When liquid medicine injection, syringe 3 as shown in Figure 3 is vertically pushed against into skin, locking bar 18 is then pressed, works as locking After item 18 is completely into groove 16, draw back plate 2 fast moves to the left under the relatively strong pressure that the first spring 7 generates, and drives core bar 5 It is moved to the left with piston 4, and then so that the medical fluid in syringe 3 penetrated skin, be injected in vivo in the case where no syringe needle.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art, Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these also should be considered as guarantor of the invention Range is protected, these all will not influence the effect and patent practicability that the present invention is implemented.The present invention omits the technology of description, shape Shape, construction portion are well-known technique.

Claims (5)

1. Needleless injection attachment device, it is characterised in that: including connecting tube, draw back plate and take off rotation mechanism, the connecting tube it is interior It is set on tube wall there are two the first arc groove, is equipped with the first bayonet on the cell wall of each first arc groove;The draw back plate sliding It is set in connecting tube, and one end of draw back plate is fixedly connected with the push rod of injection pen, the other end of the draw back plate is equipped with logical Slot, baffle is fixed on the side wall of the through slot, and baffle one end and through slot side wall form the second arc groove, the slot of baffle and through slot The second bayonet is formed between bottom;
The rotation mechanism of taking off includes that several take off turns unit, each take off turn unit include connecting rod, first take off turn pawl and second take off turn Pawl, described first takes off and turns pawl and be fixed on connecting rod one end, and described second takes off and turn pawl and be fixed on the connecting rod other end, and described first Take off and turn pawl and second and take off and turn pawl antarafacial, the connecting rod is rotatably dispose in the tube wall of connecting tube, and connecting rod and connecting tube it Between be provided with torsional spring, torsional spring in the raw when, described first takes off and turns pawl and be located in the first bayonet, and described second takes off and turn pawl position In the second bayonet side.
2. Needleless injection attachment device according to claim 1, it is characterised in that: the tube wall of the connecting tube is equipped with item Shape hole, the draw back plate are equipped with groove, are equipped with retaining mechanism in the groove, the retaining mechanism includes spring and locking Item, one end of the spring are fixedly connected with the slot bottom of groove, and the other end of spring is fixedly connected with locking bar, the locking bar It can be hit by a bullet from groove to strip-shaped hole.
3. Needleless injection attachment device according to claim 2, it is characterised in that: the tube wall of the connecting tube is equipped with logical Hole, the through-hole is close to second bayonet one end, and through-hole is located along the same line with strip-shaped hole.
4. Needleless injection attachment device according to claim 3, it is characterised in that: the tube wall of the connecting tube, which is equipped with, to be slided Hole, push-pull rod is fixed on the push rod of injection pen, and push-pull rod passes through slide opening and is slideably positioned in slide opening.
5. Needleless injection attachment device according to claim 4, it is characterised in that: the outer tube wall of the connecting tube is equipped with Sliding slot, the interior sliding of the sliding slot are provided with stopper, and the stopper can stop push-pull rod to slide.
CN201810769773.4A 2018-07-13 2018-07-13 Needleless injection connection device Expired - Fee Related CN109200396B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810769773.4A CN109200396B (en) 2018-07-13 2018-07-13 Needleless injection connection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810769773.4A CN109200396B (en) 2018-07-13 2018-07-13 Needleless injection connection device

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Publication Number Publication Date
CN109200396A true CN109200396A (en) 2019-01-15
CN109200396B CN109200396B (en) 2020-12-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110559524A (en) * 2019-10-18 2019-12-13 甄小眉 needleless injection pen
CN114010261A (en) * 2021-11-17 2022-02-08 上海玮琅医疗科技有限公司 Negative pressure syringe with locking mechanical system
CN115154765A (en) * 2022-06-17 2022-10-11 江苏益明荣药医疗科技有限公司 Pedal type energy storage device for needleless injector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499972A (en) * 1992-09-28 1996-03-19 Equidyne Systems, Inc. Hypodermic jet injector
JP2002000725A (en) * 2000-06-20 2002-01-08 Eisuke Fujimoto Disposable needleless injector
CN101557849A (en) * 2006-12-15 2009-10-14 诺沃-诺迪斯克有限公司 A medical delivery system comprising a container and a dosing assembly with radially moving fastening means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499972A (en) * 1992-09-28 1996-03-19 Equidyne Systems, Inc. Hypodermic jet injector
JP2002000725A (en) * 2000-06-20 2002-01-08 Eisuke Fujimoto Disposable needleless injector
CN101557849A (en) * 2006-12-15 2009-10-14 诺沃-诺迪斯克有限公司 A medical delivery system comprising a container and a dosing assembly with radially moving fastening means

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110559524A (en) * 2019-10-18 2019-12-13 甄小眉 needleless injection pen
CN110559524B (en) * 2019-10-18 2021-10-22 钱诚 Needleless injection pen
CN114010261A (en) * 2021-11-17 2022-02-08 上海玮琅医疗科技有限公司 Negative pressure syringe with locking mechanical system
CN114010261B (en) * 2021-11-17 2022-08-30 上海玮琅医疗科技有限公司 Negative pressure syringe with locking mechanical system
CN115154765A (en) * 2022-06-17 2022-10-11 江苏益明荣药医疗科技有限公司 Pedal type energy storage device for needleless injector
CN115154765B (en) * 2022-06-17 2023-10-20 江苏乐聚医药科技有限公司 Pedal energy storage device for needleless injector

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