CN107137805B - Quantitative needle-free injection pen - Google Patents
Quantitative needle-free injection pen Download PDFInfo
- Publication number
- CN107137805B CN107137805B CN201710465012.5A CN201710465012A CN107137805B CN 107137805 B CN107137805 B CN 107137805B CN 201710465012 A CN201710465012 A CN 201710465012A CN 107137805 B CN107137805 B CN 107137805B
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- CN
- China
- Prior art keywords
- rotary drum
- injection
- block
- push block
- pen
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- 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.)
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Classifications
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- 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
- A61M5/3007—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules with specially designed jet passages at the injector's distal end
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
Abstract
The invention relates to a quantitative needleless injection pen, which comprises a pen end, a rotary drum and a handle which are coaxially arranged; the pen end comprises a protective shell and a sealing block arranged in the protective shell, one surface of the sealing block is provided with an inward-concave injection groove, and the other surface of the sealing block is provided with an injection tube; the handle is internally provided with a power accumulator, a push block is movably arranged in the rotary drum, the push block is hermetically connected with the rotary drum through threads, and the pushing end of the push block is matched with the injection groove in shape; under the state that the flow limiting valve and the flow limiting hole are closed, the pushing block, the rotary drum and the sealing block form an airtight medicine storage cavity; a guide rod is fixedly arranged in the rotary drum, and a guide hole matched with the guide rod is formed in the push block; the push block can slide back and forth along the guide rod; the injection pen utilizes high-pressure jet flow to inject medicine, is safe, sanitary and efficient, relieves the pain of patients, and improves the accuracy and the safety of injection.
Description
Technical Field
The invention relates to a medical appliance, in particular to a syringe.
Background
The quantitative injector is mainly used for self-help treatment of patients, and when rehabilitation or maintenance treatment of chronic diseases is carried out, a user injects a certain amount of medicine to the user every day; since the patient is not a professional medical care worker, various errors or errors caused by tension occur during injection, and the problem of safety of the needle after injection also exists; thus, conventional quantitative syringes have many inconveniences, and many deficiencies remain to be overcome.
Disclosure of Invention
Aiming at the problems, the invention provides the quantitative needleless injection pen which utilizes high-pressure jet flow to inject the medicine, is safe, sanitary and efficient, relieves the pain of a patient, and improves the accuracy and the safety of injection.
In order to solve the problems, the technical scheme adopted by the invention is as follows: the quantitative needleless injection pen comprises a pen end, a rotary drum and a handle which are coaxially arranged; the rotary drum can freely rotate around the shaft, and the joint between the pen end and the handle is kept airtight in the rotating process of the rotary drum;
the pen end comprises a protective shell and a sealing block arranged in the protective shell, one surface of the sealing block is provided with an inward-concave injection groove, the other surface of the sealing block is provided with an injection tube, and the injection groove and the injection tube are communicated through a flow limiting valve; a detachable liquid storage pipe is arranged outside the protective shell and is communicated with the injection groove through a limiting hole;
the handle is internally provided with a power accumulator, one end of the power accumulator is fixedly connected with the handle, and the other end of the power accumulator is fixedly connected with the rotary drum;
a pushing block is movably arranged in the rotary drum, the pushing block is in airtight connection with the rotary drum through threads, and the pushing end of the pushing block is matched with the injection groove in shape; under the state that the flow limiting valve and the flow limiting hole are closed, the pushing block, the rotary drum and the sealing block form an airtight medicine storage cavity; a counting disc is arranged outside the rotary drum and meshed with the rotary drum;
a guide rod is fixedly arranged in the rotary drum, and a guide hole matched with the guide rod is formed in the push block; the push block can slide back and forth along the guide rod.
The invention has the beneficial effects that: under the natural state, the push block is tightly attached to the injection groove, the medicine storage cavity keeps the extrusion state, and no medicine is left; when the medicine needs to be injected, the rotary drum rotates directionally, and the energy accumulator is charged; meanwhile, the rotary drum drives the push block to translate, the distance between the push block and the injection groove is gradually increased, the medicine storage cavity is gradually enlarged, and at the moment, the medicine liquid flows out of the liquid storage tube; when the rotary drum rotates, the counting disc rotates synchronously, the rotary drum rotates for a fixed number of turns to drive the push block to translate for a fixed distance, the liquid medicine sucked in the medicine storage cavity is fixed, and the amount of the liquid medicine corresponds to the numerical value of the counting disc;
under the restriction of the flow limiting valve and the flow limiting hole, the liquid medicine can only enter the medicine storage cavity from the liquid storage tube and then flows out of the medicine storage cavity to the injection tube; the protective shell is tightly pressed on the skin, the injection tube is opposite to the skin tissue, the rotary drum is loosened, the energy stored in the accumulator is quickly released at the moment, the rotary drum is driven to rotate reversely, the push block is further pushed to quickly and reversely translate, in the process of quickly translating the push block, the liquid medicine is sprayed out from the injection tube at a high speed by an ultrafine liquid column, and the high-speed liquid column is formed at the moment and is injected into the subcutaneous part of the human body; the push block tightly presses the injection groove to completely discharge the internal liquid medicine.
The structure is precise and small, the operation is convenient, the needle tube is not required to be inserted into the skin, the pollution is not caused, and the use is more efficient and safer; the liquid medicine is sprayed into the subcutaneous tissue at a high speed, so that the liquid medicine is dispersed in the subcutaneous tissue, the liquid medicine is convenient for the human body to absorb quickly, and meanwhile, the wound is small and the pain caused by the small wound is extremely weak; the user experience and the use convenience are greatly improved, and the use is clean and sanitary, so that bacterial pollution is avoided; the user can replace the liquid storage tube after use, thereby greatly prolonging the service cycle of the quantitative needleless injection pen.
Preferably, the power accumulator comprises a base fixed inside the handle and a power accumulation coil spring arranged on the base, wherein one end of the power accumulation coil spring is fixedly connected with the base, and the other end of the power accumulation coil spring is fixedly connected with the inner wall of the rotary drum; this structure can be when the rotary drum is rotatory with drive power storage to drive the high-speed reverse rotation of rotary drum when the user is loose hand, and then make the ejector pad extrude the medicine, form the liquid medicine flow of high-speed injection, and then squeeze into human subcutaneous with the liquid medicine.
Preferably, the push block and the sealing block are made of permanent magnet materials, and opposite surfaces of the push block and the sealing block are opposite in polarity; so as to strengthen the tight binding force between the pushing block and the injection groove and facilitate the complete discharge of the liquid medicine.
Preferably, concave-convex matched lines are arranged on the pushing end of the pushing block and the groove surface of the injection groove; after the liquid medicine flows into the medicine storage cavity, the lines can generate turbulence to the liquid medicine, so that the mixing of the liquid medicine is promoted, the liquid medicine can uniformly and stably enter a human body, and the absorption of the human body is facilitated.
Drawings
Fig. 1 is a schematic sectional structure view of one embodiment of the quantitative needleless injection pen during liquid medicine suction.
Fig. 2 is a schematic cross-sectional view of the embodiment shown in fig. 1 after injection of a medical fluid.
Detailed Description
Example (b):
in the embodiment shown in fig. 1 and 2, the quantitative needleless injection pen comprises a pen end 1, a rotary drum 2 and a handle 3 which are coaxially arranged; the rotary drum 2 can freely rotate around a shaft, and the joint between the pen end 1 and the handle 3 is kept airtight in the rotating process of the rotary drum 2;
the pen tip 1 comprises a protective shell 11 and a sealing block 12 arranged in the protective shell 11, wherein one surface of the sealing block 12 is provided with an inward-concave injection groove 121, the other surface of the sealing block 12 is provided with an injection tube 122, and the injection groove 121 and the injection tube 122 are communicated through a flow limiting valve 123; a detachable liquid storage pipe 4 is arranged outside the protective shell 11, and the liquid storage pipe 4 is communicated with the injection groove 121 through a limiting hole 41;
a power accumulator is arranged in the handle 3, one end of the power accumulator is fixedly connected with the handle 3, and the other end of the power accumulator is fixedly connected with the rotary drum 2; the power accumulator comprises a base 51 fixed inside the handle 3 and a power accumulation coil spring 52 arranged on the base 51, wherein one end of the power accumulation coil spring 52 is fixedly connected with the base 51, and the other end is fixedly connected with the inner wall of the rotary drum 2;
a pushing block 21 is movably arranged in the rotary drum 2, the pushing block 21 is in airtight connection with the rotary drum 2 through threads, and the pushing end of the pushing block 21 is matched with the injection groove 121 in shape; under the state that the flow limiting valve 123 and the flow limiting hole 41 are closed, the pushing block 21, the rotary drum 2 and the sealing block 12 form an airtight medicine storage cavity 6; a counting disc 7 is arranged outside the rotary drum 2, and the counting disc 7 is meshed with the rotary drum 2;
a guide rod 8 is fixedly arranged in the rotary drum 2, and a guide hole 81 matched with the guide rod 8 is formed in the push block 21; the push block 21 is reciprocally slidable along the guide bar 8.
In a natural state, the push block 21 is tightly attached to the injection groove 121, and the medicine storage cavity 6 keeps a flat state without medicine residue; when the medicine needs to be injected, the rotary drum 2 rotates directionally, and then the energy accumulator is charged; meanwhile, the rotary drum 2 drives the push block 21 to translate, the distance between the push block 21 and the injection groove 121 is gradually increased, the medicine storage cavity 6 is gradually enlarged, and at the moment, the medicine liquid flows out of the liquid storage tube 4; when the rotary drum 2 rotates, the counting disc 7 rotates synchronously, the rotary drum 2 rotates for a fixed number of turns, and then the push block 21 is driven to translate for a fixed distance, the liquid medicine sucked in the medicine storage cavity 6 is fixed, and the amount of the liquid medicine corresponds to the numerical value of the counting disc 7;
under the restriction of the flow restriction valve 123 and the flow restriction hole 41, the liquid medicine can only enter the medicine storage cavity 6 from the medicine storage tube 4 and then flows out from the medicine storage cavity 6 to the injection tube 122; pressing the protective shell 11 against the skin, enabling the injection tube 122 to be opposite to the skin tissue, loosening the rotary drum 2, rapidly releasing the energy stored in the accumulator at the moment, driving the rotary drum 2 to rotate reversely, further pushing the push block 21 to rapidly translate reversely, and in the process of rapidly translating the push block 21, spraying the liquid medicine from the injection tube 122 at a high speed by using a superfine liquid column to form a high-speed liquid column to be injected into the subcutaneous part of a human body; the push block 21 tightly presses the injection groove 121 to completely discharge the internal liquid medicine; in this embodiment, the push block 21 and the sealing block 12 are made of permanent magnetic materials, and opposite surfaces of the push block and the sealing block are opposite in polarity; further promoting the complete discharge of the liquid medicine; meanwhile, concave-convex matched lines are arranged on the pushing end of the pushing block 21 and the groove surface of the injection groove 121; after the liquid medicine flows into the medicine storage cavity 6, the lines can generate turbulence to the liquid medicine, so that the mixing of the liquid medicine is promoted, the liquid medicine can uniformly and stably enter a human body, and the absorption of the human body is facilitated.
The structure is precise and small, the operation is convenient, the needle tube is not required to be inserted into the skin, the pollution is not caused, and the use is more efficient and safer; the liquid medicine is sprayed into the subcutaneous tissue at a high speed, so that the liquid medicine is dispersed in the subcutaneous tissue, the liquid medicine is convenient for the human body to absorb quickly, and meanwhile, the wound is small and the pain caused by the small wound is extremely weak; the user experience and the use convenience are greatly improved, and the use is clean and sanitary, so that bacterial pollution is avoided; the liquid storage tube 4 can be replaced after the use of the quantitative needleless injection pen is finished by a user, so that the service life of the quantitative needleless injection pen is greatly prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A quantitative needleless injection pen comprises a pen end (1), a rotary drum (2) and a handle (3) which are coaxially arranged; the method is characterized in that: the rotary drum (2) can freely rotate around the shaft, and the joint between the pen end (1) and the handle (3) is kept airtight in the rotating process of the rotary drum (2); the pen end (1) comprises a protective shell (11) and a sealing block (12) arranged in the protective shell (11), wherein an inwards-concave injection groove (121) is formed in one surface of the sealing block (12), an injection pipe (122) is arranged on the other surface of the sealing block (12), and the injection groove (121) and the injection pipe (122) are communicated through a flow limiting valve (123); a detachable liquid storage pipe (4) is arranged outside the protective shell (11), and the liquid storage pipe (4) is communicated with the injection groove (121) through a limiting hole (41); a power accumulator is arranged in the handle (3), one end of the power accumulator is fixedly connected with the handle (3), and the other end of the power accumulator is fixedly connected with the rotary drum (2); a push block (21) is movably arranged in the rotary drum (2), the push block (21) is in airtight connection with the rotary drum (2) through threads, and the pushing end of the push block (21) is matched with the injection groove (121) in shape; under the state that the flow limiting valve (123) and the flow limiting hole (41) are closed, the pushing block (21), the rotary drum (2) and the sealing block (12) form an airtight medicine storage cavity (6); a counting disc (7) is arranged outside the rotary drum (2), and the counting disc (7) is meshed with the rotary drum (2); a guide rod (8) is fixedly arranged in the rotary drum (2), and a guide hole (81) matched with the guide rod (8) is formed in the push block (21); the push block (21) can slide in a reciprocating manner along the guide rod (8).
2. The metered, needle-free injection pen of claim 1, wherein: the power accumulator comprises a base (51) fixed inside the handle (3) and a power accumulation coil spring (52) installed on the base (51), wherein one end of the power accumulation coil spring (52) is fixedly connected with the base (51), and the other end of the power accumulation coil spring is fixedly connected with the inner wall of the rotary drum (2).
3. The metered, needle-free injection pen according to claim 1 or 2, wherein: concave-convex matched lines are arranged on the pushing end of the pushing block (21) and the groove surface of the injection groove (121).
4. The metered, needle-free injection pen of claim 3, wherein: the push block (21) and the sealing block (12) are made of permanent magnet materials, and opposite surfaces of the push block and the sealing block are opposite in polarity and attract each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465012.5A CN107137805B (en) | 2017-06-19 | 2017-06-19 | Quantitative needle-free injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710465012.5A CN107137805B (en) | 2017-06-19 | 2017-06-19 | Quantitative needle-free injection pen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107137805A CN107137805A (en) | 2017-09-08 |
| CN107137805B true CN107137805B (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710465012.5A Active CN107137805B (en) | 2017-06-19 | 2017-06-19 | Quantitative needle-free injection pen |
Country Status (1)
| Country | Link |
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| CN (1) | CN107137805B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559524B (en) * | 2019-10-18 | 2021-10-22 | 钱诚 | Needleless injection pen |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012158137A1 (en) * | 2011-05-19 | 2012-11-22 | Becton, Dickinson And Company | Injection device with automated substance combining feature |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196928A1 (en) * | 2002-04-19 | 2003-10-23 | Parsons J. Stuart | Multi-component ampule |
| CN101374562B (en) * | 2006-01-31 | 2011-09-14 | 诺沃-诺迪斯克有限公司 | Seal for a prefilled medical jet injection device |
| CN201108646Y (en) * | 2007-09-27 | 2008-09-03 | 聂庆玲 | Automatic absorb drug injection syringe |
| CN201235121Y (en) * | 2008-04-09 | 2009-05-13 | 翁天祥 | Hypospray |
| CN201186086Y (en) * | 2008-04-14 | 2009-01-28 | 翁天祥 | Amount-adjusting needleless injector |
| CN201186087Y (en) * | 2008-04-14 | 2009-01-28 | 翁天祥 | Needleless injectors capable of regulating injection depth |
| CN201426899Y (en) * | 2009-07-07 | 2010-03-24 | 周明顺 | Intravenous injection booster |
| CN201930345U (en) * | 2011-02-16 | 2011-08-17 | 孙慧莉 | Medicine liquor uniformly-mixing injector |
| DE102012105843B4 (en) * | 2012-07-02 | 2015-11-05 | Gerresheimer Regensburg Gmbh | Device for receiving a hypodermic syringe and hypodermic syringe therefor |
| CN203060482U (en) * | 2013-03-07 | 2013-07-17 | 孙鹏 | Buffer type needleless injector |
| CN203329133U (en) * | 2013-06-27 | 2013-12-11 | 上海中医药大学附属岳阳中西医结合医院 | Precise quantification spiral injector |
| CN205434585U (en) * | 2016-01-08 | 2016-08-10 | 刘晓倩 | Insulin needleless injector |
| CN105561446A (en) * | 2016-01-11 | 2016-05-11 | 东莞市立中新材料科技有限公司 | Liquid injector |
| CN205698739U (en) * | 2016-05-13 | 2016-11-23 | 刘俊英 | A kind of cardioangiography syringe |
-
2017
- 2017-06-19 CN CN201710465012.5A patent/CN107137805B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012158137A1 (en) * | 2011-05-19 | 2012-11-22 | Becton, Dickinson And Company | Injection device with automated substance combining feature |
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| Publication number | Publication date |
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| CN107137805A (en) | 2017-09-08 |
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Effective date of registration: 20200521 Address after: 215500 floor 1, Ankang Road, DONGBANG Town, Changshu City, Suzhou City, Jiangsu Province Applicant after: Suzhou Yaokang Medical Technology Co., Ltd Address before: Room 2107, Wuzhong Mall Building, 388 Dongwu South Road, Suzhou City, Jiangsu Province, 215000 Applicant before: Qian Yuezhen |
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