CN108721730B - Injector for viscous medicinal liquids - Google Patents
Injector for viscous medicinal liquids Download PDFInfo
- Publication number
- CN108721730B CN108721730B CN201810704785.9A CN201810704785A CN108721730B CN 108721730 B CN108721730 B CN 108721730B CN 201810704785 A CN201810704785 A CN 201810704785A CN 108721730 B CN108721730 B CN 108721730B
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- China
- Prior art keywords
- steel needle
- hole
- needle
- piston rod
- steel
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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
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3286—Needle tip design, e.g. for improved penetration
Abstract
A syringe for viscous medical fluids, comprising: a cylinder, a piston member, and a steel needle; the cylinder body is provided with an air inlet hole and a round hole at the second end, and an internal thread is formed on the inner peripheral wall of the round hole; a steel needle base is formed outside the side wall of the first end of the cylinder body, and a silica gel tube needle is formed at the first end of the steel needle base; a steel needle combining hole is formed in the steel needle base; the steel needle combining hole is communicated with the silica gel tube needle; a connecting through hole is formed close to the inner side of the first end of the cylinder body, and the connecting through hole communicates the inner part of the cylinder body with the steel needle combining hole; the piston head is rotatably combined with the first end of the piston rod by taking the piston rod as an axis, and the second end of the piston rod is fixedly provided with a wheel-shaped handle; the rod body of the piston rod is provided with external threads; the piston rod extends to the outside from the round hole at the second end of the cylinder; the steel needle is inserted into the steel needle combining hole and the silica gel tube needle; a first end of the steel needle forms a tip and extends to the outside of the silicone tube needle; the second end of the steel needle extends outside the second end of the steel needle coupling hole.
Description
Technical Field
The invention relates to a syringe, in particular to a syringe for viscous liquid medicine.
Background
When injecting a viscous liquid medicine, it is difficult to push the liquid medicine out of the syringe because the liquid medicine is viscous. For example, fulvestrant, a drug for the treatment of breast cancer, can be very viscous due to the castor oil contained therein, and the nurse can be very laborious during the bolus process. When the hand is slipped off due to too great force, the needle is particularly easy to move and unnecessary stabs occur.
Disclosure of Invention
In view of the above, the present invention aims to propose a syringe suitable for viscous medicaments, which can be smoothly pushed out from the barrel of the syringe without unnecessary needle sticks.
The syringe for viscous liquid medicine of the present invention includes: a cylinder, a piston member, and a steel needle;
the cylinder body is provided with an air inlet hole and a round hole at the second end, and an internal thread is formed on the inner peripheral wall of the round hole; a steel needle base is formed outside the side wall of the first end of the cylinder body, and a silica gel tube needle is formed at the first end of the steel needle base; a steel needle combining hole is formed in the steel needle base; the steel needle combining hole is communicated with the silica gel tube needle; a connecting through hole is formed close to the inner side of the first end of the cylinder body, and the connecting through hole communicates the inner part of the cylinder body with the steel needle combining hole;
the piston member includes a piston head and a piston rod; the piston head is rotatably combined with the first end of the piston rod by taking the piston rod as an axis, and the second end of the piston rod is fixedly provided with a wheel-shaped handle; the rod body of the piston rod is provided with external threads; the piston head is accommodated in the cylinder, the piston rod extends to the outside from the circular hole at the second end of the cylinder, and the external thread of the piston rod is meshed with the internal thread of the circular hole;
the steel needle is inserted into the steel needle combining hole and the silica gel tube needle; a first end of the steel needle forms a tip and extends to the outside of the silicone tube needle; the second end of the steel needle extends outside the second end of the steel needle coupling hole.
Preferably, the silicone tube needle is formed with a plurality of side holes at a first end thereof.
Preferably, the cylinder is further formed at a first end thereof with an ultrasonic vibration generator to apply ultrasonic vibration to the medical fluid in the cylinder.
Preferably, the inner wall of the steel needle combining hole is provided with an internal thread;
external threads are formed on the periphery of the part of the steel needle, which does not extend out of the silicone tube needle;
the external threads of the steel needle are meshed with the internal threads of the steel needle combining hole to form a seal.
Preferably, the steel needle is formed at a second end thereof with a boss for convenience of operation.
Preferably, a convex block is formed in the middle of the steel needle;
the first end of the steel needle combining hole forms a front limit stop, and the second end forms a rear limit stop.
Preferably, the wheel handle has a diameter greater than the outer diameter of the barrel.
Preferably, the piston rod has a disk-shaped boss formed at a first end thereof, the piston head has a boss-shaped coupling hole formed at a second side thereof, and the disk-shaped boss is rotatably coupled in the boss-shaped coupling hole.
The injector for viscous liquid medicine of the invention advances the piston head by rotating, so that nurses can operate the injector more labor-saving; the ultrasonic vibration head loads ultrasonic waves into the liquid medicine, so that the liquid medicine can flow and permeate in a smaller channel; when the liquid medicine is pushed in, only the silicone tube needle remains in the patient, and even if the tube needle moves during operation, unnecessary stabs are not caused.
Drawings
FIG. 1 is a schematic view showing the structure of a first embodiment of a syringe for viscous liquid medicine according to the present invention;
FIG. 2 is a schematic view of the barrel of the syringe for viscous liquid medicine of FIG. 1;
FIG. 3 is a schematic view of the piston member of the syringe for viscous liquid medicine of FIG. 1;
fig. 4 is a schematic view of the structure of the steel needle of the syringe for viscous liquid medicine of fig. 1;
fig. 5 is a schematic view showing a state in which the syringe for viscous liquid medicine of fig. 1 is pushed out of the liquid medicine;
fig. 6 is a schematic structural view of a second embodiment of the syringe for viscous liquid medicine of the present invention.
Detailed Description
The syringe of the present invention will be described in detail with reference to the accompanying drawings.
The syringe for viscous liquid medicine of the present invention includes: barrel 10, piston member 20, steel needle 30.
The cylinder 10 is formed at a second end thereof with an air intake hole (not shown) and a circular hole 13, and an inner circumferential wall of the circular hole 13 is formed with an internal thread; the cylinder may form a reinforcing table 12 around the circular hole 13 to strengthen the firmness of the circular hole 13.
The cylinder 10 is formed with a steel needle base 15 outside the side wall of the first end, and the first end of the steel needle base 15 is formed with a silicone tube needle 17; a steel needle combining hole 19 is formed in the steel needle base; the steel needle combining hole 19 is communicated with the silica gel tube needle 17; a connection through hole 16 is formed close to the inner side of the first end of the cylinder 10, and the connection through hole 16 communicates the inside of the cylinder 10 with a steel needle combining hole 19.
The piston member 20 includes a piston head 21 and a piston rod 24; the piston head 21 is rotatably combined with the first end of the piston rod 24 by taking the piston rod 24 as an axis, and the second end of the piston rod 24 is fixedly provided with a wheel-shaped handle 25; the rod body of the piston rod 24 is formed with external threads; the piston head is accommodated in the cylinder 10, the piston rod 24 extends to the outside from the circular hole 13 at the second end of the cylinder, and the external thread of the piston rod 24 is meshed with the internal thread of the circular hole 13; the piston rod 24 may be formed at a first end thereof with a disk-shaped boss 23, and the piston head 21 may be formed at a second side thereof with a circular truncated cone-shaped coupling hole 22, the disk-shaped boss 23 being rotatably coupled in the circular truncated cone-shaped coupling hole 22.
The steel needle 30 is inserted into the steel needle coupling hole 19 and the silicone tube needle 17; the first end of the steel needle 30 forms a tip 31 extending to the outside of the silicone tube needle 17; the second end of the steel needle 30 extends outside the second end of the steel needle coupling hole 19.
The silicone tube needle 17 is formed with a plurality of side holes 18 at a first end thereof to increase the number of output ports.
The cylinder 10 is further formed with an ultrasonic vibration generator 14 at a first end thereof to load ultrasonic vibration to the medical fluid in the cylinder, and ultrasonic waves are propagated in the medical fluid, which is advantageous for the increase of fluidity of the medical fluid in a relatively narrow flow path, facilitating the rapid entry of the medical fluid into the body of a patient.
An internal thread is formed on the inner wall of the steel needle combining hole 19; the outer circumference of the portion of the steel needle 30 which does not extend outside the silicone tube needle 17 is formed with external threads; the external threads of the steel needle are meshed with the internal threads of the steel needle combining hole to form a seal.
The steel needle 30 is formed at a second end thereof with a boss 33 for convenience of operation.
In the second embodiment, a bump is formed in the middle of the steel needle; the first end of the steel needle combining hole forms a front limit stop, and the second end forms a rear limit stop.
The wheel handle 25 has a diameter greater than the outer diameter of the barrel 10. Thus, the operation of the user is more labor-saving.
When puncture is performed, the steel needle remains in the silicone tube needle, and the silicone tube needle and the steel needle penetrate into the body of a patient together; then the steel needle is retracted so that the connecting through hole is communicated with the silicone tube needle, at the moment, the piston rod 24 is screwed in the round hole 13 by rotating the wheel-shaped handle to push the piston head to advance, viscous liquid medicine is extruded from the connecting through hole, and the viscous liquid medicine enters the patient body through the silicone tube needle. To increase the flowability of the viscous liquid, an ultrasonic vibration generator may also be used.
The injector for viscous liquid medicine of the invention saves labor and is safe when injecting viscous liquid medicine, and facilitates the injection operation of nurses.
Claims (5)
1. A syringe for viscous medicinal fluids, comprising: a cylinder, a piston member, and a steel needle;
the cylinder body is provided with an air inlet hole and a round hole at the second end, and an internal thread is formed on the inner peripheral wall of the round hole; a steel needle base is formed outside the side wall of the first end of the cylinder body, and a silica gel tube needle is formed at the first end of the steel needle base; a steel needle combining hole is formed in the steel needle base; the steel needle combining hole is communicated with the silica gel tube needle; a connecting through hole is formed close to the inner side of the first end of the cylinder body, and the connecting through hole communicates the inner part of the cylinder body with the steel needle combining hole;
the piston member includes a piston head and a piston rod; the piston head is rotatably combined with the first end of the piston rod by taking the piston rod as an axis, and the second end of the piston rod is fixedly provided with a wheel-shaped handle; the rod body of the piston rod is provided with external threads; the piston head is accommodated in the cylinder, the piston rod extends to the outside from the circular hole at the second end of the cylinder, and the external thread of the piston rod is meshed with the internal thread of the circular hole;
the steel needle is inserted into the steel needle combining hole and the silica gel tube needle; a first end of the steel needle forms a tip and extends to the outside of the silicone tube needle; the second end of the steel needle extends to the outside of the second end of the steel needle combining hole;
when puncture is performed, the steel needle remains in the silicone tube needle, and the silicone tube needle and the steel needle penetrate into the body of a patient together; after the steel needle retreats, the connecting through hole is communicated with the silicone tube needle;
the cylinder body is provided with an ultrasonic vibration generator at the first end thereof so as to load ultrasonic vibration to the liquid medicine in the cylinder body;
an internal thread is formed on the inner wall of the steel needle combining hole;
the outer periphery of the part of the steel needle which does not extend out of the silicone tube needle is provided with external threads;
the external thread of the steel needle is meshed with the internal thread of the steel needle combining hole to form a seal;
the middle part of the steel needle forms a convex block;
the first end of the steel needle combining hole forms a front limit stop, and the second end forms a rear limit stop.
2. The syringe for viscous liquid medicine according to claim 1, wherein:
the silicone tube needle is formed with a plurality of side holes at a first end thereof.
3. The syringe for viscous liquid medicine according to claim 1, wherein:
the steel needle is formed with a boss at a second end thereof to facilitate operation.
4. The syringe for viscous liquid medicine according to claim 1, wherein:
the diameter of the wheel-shaped handle is larger than the outer diameter of the cylinder body.
5. The syringe for viscous liquid medicine according to claim 1, wherein:
the piston rod forms a disc-shaped boss at a first end thereof, the piston head forms a truncated cone-shaped combining hole at a second side thereof, and the disc-shaped boss is rotatably combined in the truncated cone-shaped combining hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704785.9A CN108721730B (en) | 2018-07-02 | 2018-07-02 | Injector for viscous medicinal liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704785.9A CN108721730B (en) | 2018-07-02 | 2018-07-02 | Injector for viscous medicinal liquids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108721730A CN108721730A (en) | 2018-11-02 |
| CN108721730B true CN108721730B (en) | 2023-06-02 |
Family
ID=63925567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810704785.9A Active CN108721730B (en) | 2018-07-02 | 2018-07-02 | Injector for viscous medicinal liquids |
Country Status (1)
| Country | Link |
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| CN (1) | CN108721730B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113304353B (en) * | 2020-08-18 | 2023-01-10 | 深圳市立心科学有限公司 | Syringe with spiral shearing mechanism |
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| US5487732A (en) * | 1992-05-15 | 1996-01-30 | Safe-T-Limited | Syringe with retractable needle |
| US5876382A (en) * | 1996-06-14 | 1999-03-02 | Ultimed, Inc | Safety syringe with retractable needle holder |
| TW368422B (en) * | 1999-01-05 | 1999-09-01 | Wen-Neng Liu | Multi-purpose safe automatic transfusion catheter needle |
| JP2002272853A (en) * | 2001-03-13 | 2002-09-24 | Masanori Hasegawa | Indwelling needle set |
| CN101433741A (en) * | 2007-11-12 | 2009-05-20 | 许明正 | Pre-filling type injection syringe capable of drawing back needling body |
| JP2015051259A (en) * | 2013-08-05 | 2015-03-19 | 三菱鉛筆株式会社 | Puncture tool |
| CN105392463A (en) * | 2013-05-09 | 2016-03-09 | 伊奎希尔德医疗有限公司 | Needle valve and connectors for use in liquid transfer apparatuses |
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| RU2621590C1 (en) * | 2016-06-17 | 2017-06-06 | Государственное бюджетное учреждение здравоохранения г. Москвы Научно-исследовательский институт скорой помощи имени Н.В. Склифосовского Департамента здравоохранения г. Москвы | Drainage for draining deposits with viscous, inhomogeneous content and gas |
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| US6837878B2 (en) * | 2001-01-09 | 2005-01-04 | Icu Medical, Inc. | Bluntable needle assembly with open-ended blunting probe |
| US7018344B2 (en) * | 2003-01-21 | 2006-03-28 | Becton, Dickinson And Company | Retractable needle shielding device |
| JP2006020843A (en) * | 2004-07-08 | 2006-01-26 | Nipro Corp | Syringe and method for injecting liquid medicine |
| US8721599B2 (en) * | 2010-07-22 | 2014-05-13 | Becton, Dickinson And Company | Dual chamber passive retraction needle syringe |
| CN104606747B (en) * | 2015-02-10 | 2018-02-27 | 四川省人民医院 | A kind of anti-pricking wound syringe of side neck formula |
| CN205163824U (en) * | 2015-11-24 | 2016-04-20 | 中国人民解放军第四军医大学 | Infusion device is assisted in angiocardiography |
| CN206315342U (en) * | 2016-07-08 | 2017-07-11 | 江阴市人民医院 | Retractable needle syringes |
| CN210145216U (en) * | 2018-07-02 | 2020-03-17 | 中国人民解放军总医院 | Syringe for viscous liquid medicine |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5487732A (en) * | 1992-05-15 | 1996-01-30 | Safe-T-Limited | Syringe with retractable needle |
| US5876382A (en) * | 1996-06-14 | 1999-03-02 | Ultimed, Inc | Safety syringe with retractable needle holder |
| TW368422B (en) * | 1999-01-05 | 1999-09-01 | Wen-Neng Liu | Multi-purpose safe automatic transfusion catheter needle |
| JP2002272853A (en) * | 2001-03-13 | 2002-09-24 | Masanori Hasegawa | Indwelling needle set |
| CN101433741A (en) * | 2007-11-12 | 2009-05-20 | 许明正 | Pre-filling type injection syringe capable of drawing back needling body |
| CN105392463A (en) * | 2013-05-09 | 2016-03-09 | 伊奎希尔德医疗有限公司 | Needle valve and connectors for use in liquid transfer apparatuses |
| JP2015051259A (en) * | 2013-08-05 | 2015-03-19 | 三菱鉛筆株式会社 | Puncture tool |
| CN205286492U (en) * | 2016-01-14 | 2016-06-08 | 中国人民解放军总医院 | Blood -letting puncture bloodletting needle |
| RU2621590C1 (en) * | 2016-06-17 | 2017-06-06 | Государственное бюджетное учреждение здравоохранения г. Москвы Научно-исследовательский институт скорой помощи имени Н.В. Склифосовского Департамента здравоохранения г. Москвы | Drainage for draining deposits with viscous, inhomogeneous content and gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108721730A (en) | 2018-11-02 |
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