CN107050579B - Needleless injector convenient for drawing medicine - Google Patents

Needleless injector convenient for drawing medicine Download PDF

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Publication number
CN107050579B
CN107050579B CN201611069708.8A CN201611069708A CN107050579B CN 107050579 B CN107050579 B CN 107050579B CN 201611069708 A CN201611069708 A CN 201611069708A CN 107050579 B CN107050579 B CN 107050579B
Authority
CN
China
Prior art keywords
medicine
air
valve
pipe
passage
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.)
Expired - Fee Related
Application number
CN201611069708.8A
Other languages
Chinese (zh)
Other versions
CN107050579A (en
Inventor
孙进武
陈小前
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.)
Sun Jinwu
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201611069708.8A priority Critical patent/CN107050579B/en
Publication of CN107050579A publication Critical patent/CN107050579A/en
Application granted granted Critical
Publication of CN107050579B publication Critical patent/CN107050579B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/3148—Means for causing or aiding aspiration or plunger retraction

Landscapes

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

Abstract

The invention discloses a needleless injector convenient for drawing medicine, which comprises a cylinder body, a reversing valve, a control valve, a piston, a medicine storage pipe, a push rod and a medicine conveying pipe, wherein the reversing valve is arranged at one end of the cylinder body; when medicine is pumped, the rotary valve core is rotated to communicate the air inlet air passage with the second air passage and the first air passage with the air outlet air passage, high-pressure gas enters the second air chamber, the piston moves to enable the medicine storage pipe to generate negative pressure, the first one-way valve is opened, and the second one-way valve is closed to finish medicine pumping work; the whole medicine pumping process is simple and easy to operate.

Description

Needleless injector convenient for drawing medicine
Technical Field
The invention relates to the technical field of medical equipment, in particular to a needleless injector convenient for medicine drawing.
Background
Needleless injection is a technique in which a liquid medicine is injected by rapidly penetrating the skin with a high-speed high-pressure jet. The advantage of acupuncture injection is that the fear and pain of the patient are greatly reduced. However, most of the existing needleless injectors are of spring energy storage mechanical structures. The spring energy storage mechanical needleless injector needs to reset the piston manually in the use process, the manual reset increases the labor intensity of medical personnel, the operation is inconvenient, and the spring energy storage mechanical needleless injector is not suitable for continuous injection and is not beneficial to popularization and application.
Disclosure of Invention
The invention aims to solve the technical problem of providing a needleless injector which does not need to reset a piston manually and can automatically draw medicine and is convenient to draw the medicine.
In order to solve the technical problems, the technical scheme of the invention is as follows: a needleless injector convenient for drawing medicine comprises a barrel, a reversing valve, a control valve, a piston, a medicine storage pipe, a push rod and a medicine conveying pipe, wherein the reversing valve is arranged at one end of the barrel; the piston will the barrel is cut apart into first air chamber and second air chamber, first air chamber passes through the second breather pipe with first breather pipe intercommunication, first breather pipe with first air flue intercommunication, the second air chamber pass through the third breather pipe with the second air flue intercommunication, the one end of push rod is fixed on the piston, the other end setting of push rod is in the storage medicine pipe, the front end of storage medicine pipe is provided with the medicine conveying pipe, medicine conveying pipe and storage medicine union coupling department are provided with the first check valve that can open when drawing medicine, the nozzle department of storage medicine pipe is provided with the second check valve that closes when drawing medicine.
Furthermore, a liquid medicine filter is arranged on the medicine conveying pipe, and the liquid medicine filter comprises a shell and a filter element arranged in the process of filtering.
Furthermore, two channels are formed in the rotary valve core, and the two channels are communicated with the air inlet channel, the air outlet channel, the first air channel and the second air channel through rotation of the rotary valve core.
Furthermore, the control valve comprises a first core sleeve and a first valve core sleeved in the first core sleeve, the first vent pipe, the second vent pipe and the third vent pipe are arranged on the first core sleeve, and the first valve core controls the communication of the first vent pipe and the second vent pipe.
Furthermore, a stop block is arranged at one end, away from the reversing valve, of the first core sleeve, a spring is arranged between the stop block and the first valve core, and the first valve core is connected with a push key arranged on the outer side of the cylinder body.
Further, the medicine storage tube is fixed on the barrel body through an end cover.
The beneficial effects obtained by adopting the technical scheme are as follows: during injection, the rotary valve core is rotated to enable the air inlet air passage to be communicated with the first air passage, the second air passage to be communicated with the air outlet air passage, and the push key is pushed to complete injection; when medicine is pumped, the rotary valve core is rotated to communicate the air inlet air passage with the second air passage and the first air passage with the air outlet air passage, high-pressure gas enters the second air chamber, the piston moves to enable the medicine storage pipe to generate negative pressure, the first one-way valve is opened, and the second one-way valve is closed to finish medicine pumping work; the whole medicine pumping process is simple and easy to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a needleless injector convenient for drawing a medicine of the present invention.
In the figure: 1-rotary valve core, 2-second air passage, 3-air outlet passage, 4-second air passage, 5-first air chamber, 6-third air passage, 7-sealing shell, 8-second air chamber, 9-push rod, 10-air inlet passage, 11-valve body, 12-first air passage, 13-cylinder, 14-first air passage, 15-first valve core, 16-push key, 17-first core sleeve, 18-stop block, 19-piston, 20-drug delivery pipe, 21-end cover, 22-drug storage pipe, 23-drug liquid filter, 24-first one-way valve, 25-second one-way valve, 100-reversing valve and 200-control valve.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention is further described with reference to the accompanying drawings, so that those skilled in the art can better implement the invention, and the needleless injector convenient for drawing medicine in the embodiment of the invention comprises a cylinder body 13, a reversing valve 100, a control valve 200, a piston 19, a medicine storage tube 22, a push rod 9 and a medicine conveying tube 20, wherein the reversing valve 100 is arranged at one end of the cylinder body 13, the control valve 200 is sleeved at one end of the cylinder body 13 provided with the reversing valve 100, the medicine storage tube 22 is fixed at one end of the cylinder body 13 far away from the reversing valve 100, the reversing valve 100 comprises a valve body 11, an air inlet air passage 10, an air outlet air passage 3, a first air passage 12 and a second air passage 2 are arranged on the valve body 11, a rotary valve core 1 for controlling the on-off of the air inlet air passage 10, the air outlet air passage 3, the first air passage 12 and the second air passage 2 is arranged in the valve body 11; piston 19 is cut apart into first air chamber 5 and second air chamber 8 with barrel 13, first air chamber 5 is through second breather pipe 4 and first breather pipe 14 intercommunication, first breather pipe 14 and first air flue 12 intercommunication, second air chamber 8 is through third breather pipe 6 and second air flue 2 intercommunication, the one end of push rod 9 is fixed on piston 19, the other end setting of push rod 9 is in storage tube 22, storage tube 22's front end is provided with medicine conveying pipe 20, medicine conveying pipe 20 and storage tube 22 junction are provided with the first check valve 24 that can open when drawing the medicine, storage tube 22's nozzle department is provided with the second check valve 25 that closes when drawing the medicine.
In order to prevent the dissolved substances from entering the medicine storage tube 22 when the medicine liquid is mixed, a medicine liquid filter 23 is arranged on the medicine conveying tube 20, and the medicine liquid filter 23 comprises a shell and a filter element arranged in the process of filtering; in the embodiment of the invention, the medicine storage tube 22 is fixed on the cylinder body 13 through the end cover 21; the third vent pipe 6 is composed of a sealing shell 7 arranged on the cylinder body 13 and a through hole arranged on the cylinder body 13.
According to the embodiment of the invention, two channels are formed in a rotary valve core 1, the two channels are communicated with an air inlet channel 10, an air outlet channel 3, a first air channel 12 and a second air channel 2 through the rotation of the rotary valve core 1, the air inlet channel 10, the air outlet channel 3, the first air channel 12 and the second air channel 2 are communicated with a space for accommodating the rotary valve core 1, the air inlet channel 10 and the first air channel 12, the air outlet channel 3 and the second air channel 2, the air inlet channel 10 and the second air channel 2, the air outlet channel 3 and the first air channel 12 can be communicated through the rotary valve core 1, the air inlet channel 10 is communicated with the first air channel 12 when a first air chamber 5 is filled with air, and the air outlet channel 3 is communicated with the second air; when air is fed into the second air chamber 8, the air inlet air passage 10 is communicated with the second air passage 2, and the air outlet air passage 3 is communicated with the first air passage 12.
The control valve 200 of the embodiment of the invention comprises a first core sleeve 17 and a first valve core 15 sleeved in the first core sleeve 17, wherein a first vent pipe 14, a second vent pipe 4 and a third vent pipe 6 are arranged on the first core sleeve 17, and the first valve core 15 controls the communication of the first vent pipe 14 and the second vent pipe 4; a stop 18 is arranged at one end of the first core sleeve 17 far away from the reversing valve 100, a spring is arranged between the stop 18 and the first valve core 15, and the first valve core 15 is connected with a push key 16 arranged outside the cylinder 13.
During injection, the rotary valve core 1 is rotated to enable the air inlet passage 10 to be communicated with the first air passage 12, the second air passage 2 is communicated with the air outlet passage 3, and the push key 16 is pushed to finish injection; when medicine is pumped, the rotary valve core 1 is rotated to communicate the air inlet passage 10 with the second air passage 2 and communicate the first air passage 12 with the air outlet passage 3, high-pressure gas enters the second air chamber 8, the piston 19 moves to enable the medicine storage pipe 22 to generate negative pressure, the first one-way valve 24 is opened, and the second one-way valve 25 is closed to complete medicine pumping work.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims (6)

1. A needleless injector convenient for drawing medicine is characterized in that: the medicine storage tube is fixed at one end of the barrel, the reversing valve is arranged at one end of the barrel, the control valve is sleeved at one end of the barrel, which is provided with the reversing valve, the medicine storage tube is fixed at one end of the barrel, which is far away from the reversing valve, the reversing valve comprises a valve body, an air inlet passage, an air outlet passage, a first air passage and a second air passage are formed in the valve body, a rotary valve core for controlling the on-off of the air inlet passage, the air outlet passage, the first air passage and the second air passage is arranged in the valve body, and a first vent pipe and a second vent pipe are formed in the control valve; the piston will the barrel is cut apart into first air chamber and second air chamber, first air chamber passes through the second breather pipe with first breather pipe intercommunication, first breather pipe with first air flue intercommunication, the second air chamber pass through the third breather pipe with the second air flue intercommunication, the one end of push rod is fixed on the piston, the other end setting of push rod is in the storage medicine pipe, the front end of storage medicine pipe is provided with the medicine conveying pipe, medicine conveying pipe and storage medicine union coupling department are provided with the first check valve that can open when drawing medicine, the nozzle department of storage medicine pipe is provided with the second check valve that closes when drawing medicine.
2. The needle-free injector for facilitating drawing medicine according to claim 1, wherein: the drug delivery pipe is provided with a drug liquid filter, and the drug liquid filter comprises a shell and a filter element arranged in the process of filtering.
3. The needle-free injector for facilitating drawing medicine according to claim 1, wherein: two channels are formed in the rotary valve core and are communicated with the air inlet channel, the air outlet channel, the first air channel and the second air channel through rotation of the rotary valve core.
4. The needle-free injector for facilitating drawing medicine according to claim 1, wherein: the control valve comprises a first core sleeve and a first valve core sleeved in the first core sleeve, wherein a first vent pipe, a second vent pipe and a third vent pipe are arranged on the first core sleeve, and the first valve core controls the communication of the first vent pipe and the second vent pipe.
5. The needle-free injector for facilitating drawing medicine according to claim 4, wherein: and a stop block is arranged at one end of the first core sleeve, which is far away from the reversing valve, a spring is arranged between the stop block and the first valve core, and the first valve core is connected with a push key arranged at the outer side of the cylinder body.
6. The needle-free injector for facilitating drawing medicine according to claim 1, wherein: the medicine storage tube is fixed on the barrel body through the end cover.
CN201611069708.8A 2016-11-28 2016-11-28 Needleless injector convenient for drawing medicine Expired - Fee Related CN107050579B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611069708.8A CN107050579B (en) 2016-11-28 2016-11-28 Needleless injector convenient for drawing medicine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611069708.8A CN107050579B (en) 2016-11-28 2016-11-28 Needleless injector convenient for drawing medicine

Publications (2)

Publication Number Publication Date
CN107050579A CN107050579A (en) 2017-08-18
CN107050579B true CN107050579B (en) 2019-12-31

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ID=59618863

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Application Number Title Priority Date Filing Date
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108042886B (en) * 2017-12-27 2021-05-11 四川护理职业学院 Simple needleless injector

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003047663A3 (en) * 2001-11-30 2004-03-04 Elan Pharma Int Ltd Automatic injector
CN2882647Y (en) * 2005-12-13 2007-03-28 左成钢 Full automatic penumatic syringe
WO2007127859A2 (en) * 2006-04-27 2007-11-08 Medtronic, Inc. Apparatus for refilling an infusion device
CN101141990A (en) * 2004-12-01 2008-03-12 Wlt经销股份有限公司 Needle-free injector
CN201888971U (en) * 2010-01-08 2011-07-06 江苏华兰米特医疗科技有限公司 Needleless injector
CN203647802U (en) * 2013-12-16 2014-06-18 广东康尔美医疗器械有限公司 Negative-pressure suction injector
CN204158725U (en) * 2014-08-22 2015-02-18 王子刚 Medicine dissolving and adding appliance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8795231B2 (en) * 2011-05-10 2014-08-05 Medtronic Minimed, Inc. Automated reservoir fill system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003047663A3 (en) * 2001-11-30 2004-03-04 Elan Pharma Int Ltd Automatic injector
CN101141990A (en) * 2004-12-01 2008-03-12 Wlt经销股份有限公司 Needle-free injector
CN2882647Y (en) * 2005-12-13 2007-03-28 左成钢 Full automatic penumatic syringe
WO2007127859A2 (en) * 2006-04-27 2007-11-08 Medtronic, Inc. Apparatus for refilling an infusion device
CN201888971U (en) * 2010-01-08 2011-07-06 江苏华兰米特医疗科技有限公司 Needleless injector
CN203647802U (en) * 2013-12-16 2014-06-18 广东康尔美医疗器械有限公司 Negative-pressure suction injector
CN204158725U (en) * 2014-08-22 2015-02-18 王子刚 Medicine dissolving and adding appliance

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Legal Events

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PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Sun Jinwu

Inventor after: Chen Xiaoqian

Inventor before: Chen Xiaoqian

CB03 Change of inventor or designer information
TA01 Transfer of patent application right

Effective date of registration: 20191203

Address after: 277599 Department of Anesthesiology, Tengzhou workers' hospital, No. 292 Jinghe Middle Road, Tengzhou, Zaozhuang, Shandong

Applicant after: Sun Jinwu

Address before: No.9, Baibang entrepreneurship service center, No.11, Tianshui Road, Luyang District, Hefei City, Anhui Province#

Applicant before: HEFEI XUNCHUANG INFORMATION TECHNOLOGY CO.,LTD.

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191231

Termination date: 20211128

CF01 Termination of patent right due to non-payment of annual fee