CN109350515B - Injection syringe - Google Patents
Injection syringe Download PDFInfo
- Publication number
- CN109350515B CN109350515B CN201811364681.4A CN201811364681A CN109350515B CN 109350515 B CN109350515 B CN 109350515B CN 201811364681 A CN201811364681 A CN 201811364681A CN 109350515 B CN109350515 B CN 109350515B
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- China
- Prior art keywords
- storage cavity
- core rod
- piston
- medicine
- guide
- Prior art date
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- 239000007924 injection Substances 0.000 title description 13
- 238000002347 injection Methods 0.000 title description 13
- 239000003814 drug Substances 0.000 claims abstract description 113
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims 3
- 229940079593 drug Drugs 0.000 abstract description 19
- 238000002156 mixing Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 description 12
- 229920000669 heparin Polymers 0.000 description 6
- ZFGMDIBRIDKWMY-PASTXAENSA-N heparin Chemical compound CC(O)=N[C@@H]1[C@@H](O)[C@H](O)[C@@H](COS(O)(=O)=O)O[C@@H]1O[C@@H]1[C@@H](C(O)=O)O[C@@H](O[C@H]2[C@@H]([C@@H](OS(O)(=O)=O)[C@@H](O[C@@H]3[C@@H](OC(O)[C@H](OS(O)(=O)=O)[C@H]3O)C(O)=O)O[C@@H]2O)CS(O)(=O)=O)[C@H](O)[C@H]1O ZFGMDIBRIDKWMY-PASTXAENSA-N 0.000 description 6
- 229960001008 heparin sodium Drugs 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000002504 physiological saline solution Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 229940126589 solid medicine Drugs 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229940126585 therapeutic drug Drugs 0.000 description 1
Classifications
-
- 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
- A61J1/2006—Piercing means
- A61J1/201—Piercing means having one piercing end
-
- 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
- A61J1/2093—Containers having several compartments for products to be mixed
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31596—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing
-
- 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
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
Landscapes
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Pharmacology & Pharmacy (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a syringe. The side wall of the outer sleeve encloses a first storage cavity for storing a first medicine. One end of the first piston piece is arranged in the first storage cavity in a penetrating way and can move in the first storage cavity, a second storage cavity is formed in the first piston piece, and the second storage cavity is used for storing second medicines. One end of the first piston member is closed, and the second storage cavity penetrates through the other end of the first piston member. One end of the second piston member can be penetrated into the second storage cavity by the other end of the first piston member. The guide needle is provided with a guide cavity, the guide cavity penetrates through one end of the guide needle, the side wall of the other end of the guide needle is provided with a guide groove, the guide groove is communicated with the guide cavity, the other end of the guide needle is fixed at one end of the second piston, the second piston can move in the second storage cavity, the guide needle is driven to move, one end of the guide needle can penetrate through one end of the first piston and penetrate through the first storage cavity, and mixing of the first medicine and the second medicine is facilitated.
Description
Technical Field
The invention relates to the technical field of medicine configuration devices, in particular to an injector.
Background
Currently, medical staff is required to pre-prepare a certain concentration of drug in the course of treatment by injection of the drug. For example, two bottles filled with solid medicine and liquid medicine are filled, the liquid medicine is sucked through a syringe, then the liquid medicine is injected into the solid medicine, and after the two medicines are uniformly mixed, the mixed medicine is sucked into the syringe. Because the function of a common injector is single, medical staff can operate more steps when preparing medicines, and medicine pollution is easy to cause in the preparation process, thus causing harm to the health of patients.
Disclosure of Invention
In view of the above, it is necessary to provide a syringe which is easy to handle when dispensing a drug and which is free from contamination by the drug.
A syringe, comprising:
The side wall of the outer sleeve encloses a first storage cavity which is used for storing a first medicine;
One end of the first piston piece is arranged in the first storage cavity in a penetrating way and can move in the first storage cavity, a second storage cavity is formed in the first piston piece and is used for storing a second medicine, one end of the first piston piece is closed, and the second storage cavity penetrates through the other end of the first piston piece;
One end of the second piston piece can be penetrated in the second storage cavity by the other end of the first piston piece; and
The guide needle is provided with a guide cavity, the guide cavity penetrates through one end of the guide needle, a guide groove is formed in the side wall of the other end of the guide needle, the guide groove is communicated with the guide cavity, the other end of the guide needle is fixed to one end of the second piston member, the second piston member can move in the second storage cavity, the guide needle is driven to move, and one end of the guide needle can puncture one end of the first piston member and penetrate through the first storage cavity.
When the syringe is used, the first medicine is stored in the first storage cavity of the outer sleeve, and one end of the first piston piece is arranged in the first storage cavity in a penetrating mode, so that the first medicine is stored in the first storage cavity. A second storage cavity is formed in the first piston member, and second medicines are stored in the second storage cavity. One end of the second piston member is penetrated in the second storage cavity by the other end of the first piston member, and the second medicine is stored in the second storage cavity due to the fact that one end of the first piston member is closed. The other end of the guide pin is fixed at one end of the second piston member, and one end of the guide pin can pierce one end of the first piston member and penetrate into the first storage cavity. Meanwhile, the guide needle is provided with the guide cavity, the guide cavity penetrates through one end of the guide needle, the side wall of the other end of the guide needle is provided with the guide groove, the guide groove is communicated with the guide cavity, and then the first storage cavity and the second storage cavity can be effectively conducted through the guide needle, so that the first medicine and the second medicine can be conveniently mixed.
When in use, the second medicine is stored in the second storage cavity, and a certain space is reserved in the second storage cavity. When the mixed medicine of the first medicine and the second medicine needs to be configured, the second piston piece is pushed to move in the second storage cavity, one end of the guide pin pierces through one end of the first piston piece and penetrates through the first storage cavity, and the first medicine in the first storage cavity can enter the second storage cavity from the guide cavity through the guide groove, so that the second medicine is dissolved in the first medicine. At this time, the first piston member may be pushed to move in the first reservoir chamber first, flushing the pipeline with the first medicine. The first piston piece can be pushed to control the quantity of the first medicine in the first storage cavity, and the second piston piece can be pushed to push the medicine which is mixed and then is positioned in the second storage cavity into the first storage cavity, so that mixed medicine with a certain concentration is obtained.
The syringe has various functions and can be used for preparing medicines with different concentration requirements. Meanwhile, in the configuration process, only the first piston piece and/or the second piston piece are required to be pushed, and the operation is simple. In the configuration process, the first medicine or the second medicine is not required to be taken out, so that the medicine is effectively prevented from being contacted with the outside, and the medicine is prevented from being polluted.
In one embodiment, the first piston member includes a first core rod and a spacer plug, the sidewall of the first core rod forms the second storage cavity, the second storage cavity penetrates through two opposite ends of the first core rod, the spacer plug is disposed at one end of the first core rod to seal one end of the first core rod, and one end of the guide pin can pierce the spacer plug.
In one embodiment, a first clamping groove is formed on the inner wall of one end of the first core rod, and the isolation plug is clamped in the first clamping groove.
In one embodiment, the isolation plug is an elastomeric plug body.
In one embodiment, a piston is sleeved on the outer wall of one end of the first core rod, and the outer wall of the piston is abutted to the inner wall of the first storage cavity.
In one embodiment, the second piston member includes a second core rod and a clamping member, a second clamping groove is formed in the inner wall of the second storage cavity, the clamping member is disposed in the second clamping groove, an elastic retainer ring is disposed on the inner wall of the clamping member, one end of the second core rod is disposed in the second storage cavity in a penetrating manner, and an end face of one end of the second core rod can be abutted to the elastic retainer ring.
In one embodiment, the circlip is an annular ring.
In one embodiment, the second piston member further includes a third core rod, the clamping member is sleeved at one end of the third core rod, the second clamping groove penetrates through the other end of the first piston member, and one end of the third core rod penetrates through the second clamping groove, so that the clamping member is effectively abutted to the inner wall of the second clamping groove; and one end of the third core rod is provided with a sliding hole, the sliding hole penetrates through the other end of the third core rod, the sliding hole is communicated with the second storage cavity, and the second core rod can penetrate through the sliding hole and is arranged in the second storage cavity in a penetrating mode.
In one embodiment, the inner diameter of the sliding hole is the same as the inner diameter of the second storage cavity, and the inner diameter of the sliding hole is matched with the outer diameter of the second core rod.
In one embodiment, a sealing ring is clamped at one end of the second core rod, and the outer wall of the sealing ring can be abutted to the inner wall of the second storage cavity.
Drawings
FIG. 1 is a cross-sectional view of a syringe according to one embodiment;
FIG. 2 is a cross-sectional view of the first piston member of FIG. 1;
FIG. 3 is a cross-sectional view of the second piston member and guide pin of FIG. 1;
FIG. 4 is a schematic view of the guide pin of FIG. 3;
FIG. 5 is a cross-sectional view of the syringe of FIG. 1 in a first use condition;
FIG. 6 is a cross-sectional view of the syringe of FIG. 1 in a second use condition;
fig. 7 is a cross-sectional view of the syringe of fig. 1 in a third use condition.
Reference numerals illustrate:
10. syringe, 100, jacket, 110, first storage chamber, 200, first piston member, 210, second storage chamber, 212, second clamping groove, 220, first core rod, 230, isolation plug, 242, first clamping table, 250, piston, 300, second piston member, 310, second core rod, 312, seal ring, 320, clamping member, 322, circlip, 330, third core rod, 332, slide hole, 400, guide pin, 410, guide chamber, 420, guide groove, 20, first medicine, 30, second medicine.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
Referring to fig. 1, an injector 10 in an embodiment is used for drug configuration, and has multiple functions, so that a medical staff can operate simply in the drug configuration process, and drug pollution can be effectively avoided. Specifically, the syringe 10 includes a housing 100, a first piston member 200, a second piston member 300, and a guide pin 400.
The side walls of the outer casing 100 define a first storage chamber 110, and the first storage chamber 110 is used for storing the first medicine 20. One end of the first piston member 200 is disposed through the first storage chamber 110 and is movable in the first storage chamber 110. The first piston member 200 is provided with a second storage chamber 210, and the second storage chamber 210 is used for storing the second medicine 30. One end of the first piston member 200 is closed, and the second storage chamber 210 penetrates the other end of the first piston member 200. One end of the second piston member 300 can be inserted into the second storage chamber 210 from the other end of the first piston member 200. The guide pin 400 is provided with a guide cavity 410, and the guide cavity 410 penetrates through one end of the guide pin 400. The side wall of the other end of the guide pin 400 is provided with a guide groove 420, the guide groove 420 is communicated with the guide cavity 410, the other end of the guide pin 400 is fixed at one end of the second piston member 300, the second piston member 300 can move in the second storage cavity 210, the guide pin 400 is driven to move, and one end of the guide pin 400 can pierce one end of the first piston member 200 and penetrate through the first storage cavity 110.
In use of the syringe 10, the first medicine 20 is stored in the first storage chamber 110 of the casing 100, and one end of the first piston member 200 is disposed through the first storage chamber 110, so that the first medicine 20 is stored in the first storage chamber 110. The second medicine 30 is stored in the second storage chamber 210, and one end of the second piston member 300 is inserted into the second storage chamber 210 from the other end of the first piston member 200. Since one end of the first piston member 200 is closed, the second medicine 30 is stored in the second storage chamber 210. The second piston member 300 is pushed to move in the second storage chamber 210 so that one end of the guide pin 400 pierces one end of the first piston member 200 and penetrates the first storage chamber 110. The guiding cavity 410 and the guiding groove 420 of the guiding needle 400 can effectively conduct the first storage cavity 110 and the second storage cavity 210, so as to facilitate the mixing of the first medicine 20 and the second medicine 30.
In this embodiment, the first medicine 20 is a liquid medicine, the second medicine 30 is a solid medicine, and a certain space is reserved in the second storage cavity 210 when the second medicine 30 is stored in the second storage cavity 210. When the mixed medicine of the first medicine 20 and the second medicine 30 needs to be configured, the second piston member 300 is pushed to move in the second storage cavity 210, so that one end of the guide pin 400 pierces one end of the first piston member 200 and penetrates through the first storage cavity 110, and the first medicine 20 in the first storage cavity 110 can enter the second storage cavity 210 from the guide cavity 410 through the guide groove 420, so that the second medicine 30 is dissolved in the first medicine 20. At this time, the first piston member 200 may be pushed to move in the first storage chamber 110, and the first medicine 20 is used to flush the pipeline. The amount of the first medicine 20 in the first storage chamber 110 can be controlled by pushing the first piston member 200, and the second piston member 300 can be pushed to push the medicine in the second storage chamber 210 into the first storage chamber 110 after being mixed, so that a mixed medicine with a certain concentration can be obtained. Of course, in other embodiments, the second medicament 30 may also be a liquid medicament.
For example, the first drug 20 is physiological saline and the second drug 30 is heparin sodium. Since the PH and concentration of physiological saline have an influence on the potency of heparin sodium, they cannot be mixed in advance. By the above-mentioned syringe 10, physiological saline is stored in the first storage chamber 110, heparin sodium is stored in the second storage chamber 210, and before the preparation, the physiological saline and heparin sodium are stored independently, so that the influence of the pre-mixing of the physiological saline and heparin sodium on the potency of heparin sodium is avoided.
Referring to fig. 2, in an embodiment, the first piston member 200 includes a first stem 220 and a spacer 230, and a sidewall of the first stem 220 forms a second storage cavity 210. The second storage cavity 210 penetrates opposite ends of the first stem 220, the isolation plug 230 is disposed at one end of the first stem 220 to seal one end of the first stem 220, and one end of the guide pin 400 can pierce the isolation plug 230. By providing the first core 220 and the septum 230, the first core 220 and the septum 230 may be made of different materials, and the lead 400 may need to be able to pierce the septum 230, so that the septum 230 may be made of a material that facilitates penetration of the lead 400, while the first core 220 may need to carry the second drug 30 while facilitating movement of the second piston member 300, and may be made of a harder and more stable material.
Specifically, a first clamping groove is formed on an inner wall of one end of the first core rod 220, and the isolation plug 230 is clamped in the first clamping groove. The isolation plug 230 can be effectively clamped on the inner wall of the first core rod 220 through the first clamping groove, so that the second storage cavity 210 can be sealed, and leakage of the second medicine 30 from one end of the first core rod 220 when the medicine is not used is avoided.
Further, a first clamping table 242 and a second clamping table 244 spaced from the first clamping table 242 are disposed on an inner wall of one end of the first core rod 220, and the first clamping table 242, the second clamping table 244 and the inner wall of one end of the first core rod 220 together enclose a first clamping groove. The second clamping platform 244 is disposed near an end surface of one end of the first core rod 220, and the size of the second clamping platform 244 is larger than that of the first clamping platform 242. The second clamping platform 244 can effectively clamp the isolation plug 230, so that the isolation plug 230 is prevented from being separated from the first core rod 220 in the process that the guide pin 400 pierces the isolation plug 230.
In this embodiment, the isolation plug 230 is an elastic plug body, so that the isolation plug 230 can be effectively clamped in the first clamping groove, and one end of the first core rod 220 can be effectively sealed. Specifically, the separator 230 is a rubber stopper. Of course, in other embodiments, the isolation plug 230 may be a plug body made of other materials such as a silicone plug.
In one embodiment, the piston 250 is sleeved on the outer wall of one end of the first core rod 220, and the outer wall of the piston 250 abuts against the inner wall of the first storage cavity 110. By providing the piston 250, the first core 220 can be more stably inserted into the first storage chamber 110, and the first medicine 20 can be effectively sealed in the first storage chamber 110.
Specifically, the piston 250 is fixed on an outer wall of one end of the first core rod 220, and when the first core rod 220 moves in the first storage cavity 110, the piston 250 is always located at one end of the first core rod 220 and effectively abuts against an inner wall of the first storage cavity 110, so as to avoid leakage of the first medicine 20.
Referring to fig. 3, in an embodiment, the second piston member 300 includes a second core rod 310 and a clamping member 320, a second clamping groove 212 is formed on an inner wall of the second storage cavity 210, and the clamping member 320 is disposed in the second clamping groove 212. The inner wall of the clamping piece 320 is provided with a circlip 322, one end of the second core rod 310 is arranged in the second storage cavity 210 in a penetrating manner, and the end face of one end of the second core rod 310 can be abutted against the circlip 322.
The second storage chamber 210 can be effectively sealed by providing the snap-fit member 320 and the circlip 322. Before use, the second medicine 30 is stored in the second storage chamber 210, and a certain space for facilitating the mixing of the first medicine 20 and the second medicine 30 is reserved in the second storage chamber 210, and the space is vacuumized. Since the end surface of one end of the second core rod 310 can abut against the circlip 322, it is possible to prevent the second core rod 310 from moving inside the second reservoir chamber 210 due to the vacuum space before use. In use, the second core pin 310 is forced so that the second core pin 310 pushes the circlip 322 so that the lead 400 can pierce the septum 230. Since the second storage cavity 210 is in a vacuum state, the first medicine 20 in the first storage cavity 110 effectively enters the second storage cavity 210 through the guide pin 400, and the mixing of the first medicine 20 and the second medicine 30 is accelerated.
Specifically, circlip 322 is an annular ring. When the second core rod 310 moves in the second storage cavity 210, the elastic retainer ring 322 is an elastic member, so that the elastic retainer ring 322 can further abut against the outer wall of the second core rod 310, and further can seal the medicine in the second storage cavity 210, thereby avoiding the entry of external bacterial air.
Of course, in other embodiments, the circlip 322 may be formed with a plurality of spaced apart resilient stops, so long as the second core pin 310 is capable of providing a certain blocking effect.
Optionally, the second piston member 300 further includes a third core rod 330, the clamping member 320 is sleeved at one end of the third core rod 330, the second clamping groove 212 penetrates through the other end of the first piston member 200, and one end of the third core rod 330 is disposed in the second clamping groove 212 in a penetrating manner, so that the clamping member 320 is effectively abutted to the inner wall of the second clamping groove 212. The third core rod 330 is arranged to facilitate the clamping of the clamping member 320 in the second clamping groove 212.
Specifically, the second clamping groove 212 penetrates through the other end of the first core rod 220, so that the second storage cavity 210 is formed in the bottom wall of the second clamping groove 212, and the inner diameter of the second storage cavity 210 is smaller than that of the second clamping groove 212. When the clamping member 320 is disposed in the second clamping groove 212, the clamping member 320 is effectively abutted against the bottom wall of the second clamping groove 212, so as to prevent the clamping member 320 from moving in the second clamping groove 212.
Specifically, a sliding hole 332 is formed at one end of the third core rod 330, the sliding hole 332 penetrates through the other end of the third core rod 330, the sliding hole 332 is communicated with the second storage cavity 210, and one end of the second core rod 310 can penetrate through the sliding hole 332 and penetrate through the second storage cavity 210. The sliding hole 332 can enable the second core rod 310 to effectively penetrate into the second storage cavity 210.
Further, the inner diameter of the sliding hole 332 is the same as the inner diameter of the second storage cavity 210, and matches the outer diameter of the second core rod 310. The problem that the outer wall of the second core rod 310 is not in effective contact with the inner wall of the second storage cavity 210 to affect the mixing or pushing of the medicine in the second storage cavity 210 can be effectively avoided when the second core rod 310 is inserted into the second storage cavity 210 through the sliding hole 332.
Further, the circlip 322 is located between the sliding hole 332 and the second storage chamber 210, and the inner diameter of the circlip 322 is smaller than the inner diameter of the second storage chamber 210. The sliding hole 332 can be effectively separated from the second storage cavity 210 by abutting one end of the second core rod 310 on the circlip 322, so as to avoid contamination of the medicine in the second storage cavity 210 or leakage of the medicine through the sliding hole 332.
Optionally, a sealing ring 312 is clamped at one end of the second core rod 310, and an outer wall of the sealing ring 312 can be abutted against an inner wall of the second storage cavity 210. The sealing effect on the second storage chamber 210 can be further enhanced by providing the sealing ring 312, so that the second storage chamber 210 can effectively maintain a vacuum state, and meanwhile, the medicine in the second storage chamber 210 is prevented from being polluted.
In this embodiment, two sealing rings 312 are clamped at one end of the second core rod 310, and the two sealing rings 312 are disposed at intervals. The sealing effect on the second storage chamber 210 can be further enhanced by providing two sealing rings 312. Of course, in other embodiments, the number of sealing rings 312 may be one, three, etc., as long as the sealing ring can effectively seal the second storage chamber 210.
Referring to fig. 4, specifically, one end of the guide pin 400 is pointed, so that the guide pin 400 can effectively pierce the isolation plug 230. The other end of the guide pin 400 is directly inserted into and fixed to one end of the second core pin 310. Further, the guide groove 420 is formed on the sidewall of the other end of the guide pin 400 near the end surface of the one end of the second core pin 310. When the lead 400 passes completely through the isolation plug 230, the medicine in the second storage chamber 210 can be more effectively introduced into the first storage chamber 110 through the guide groove 420. Further, the guide groove 420 is substantially flush with an end surface of one end of the second core rod 310, so that the second core rod 310 can more completely push the medicine in the second storage cavity 210 into the first storage cavity 110.
In this embodiment, the guide pin 400 is a steel pin, so that the guide pin 400 has a better hardness, and can effectively pierce the isolation plug 230.
In one embodiment, an injection port 120 is formed at one end of the outer case 100, and the injection port 120 communicates with the first storage chamber 110. The medicine in the first storage chamber 110 is conveniently injected through the injection port 120.
Specifically, the syringe 10 further includes a conical head cap 130, where the conical head cap 130 covers the injection port 120 to close the injection port 120, so as to prevent foreign matters in the outside air from entering the second storage chamber 210 through the injection port 120. When the injection is needed, the injection can be performed by only pulling out the conical head cap 130.
Specifically, in this embodiment, the first drug 20 is normal saline and the second drug 30 is a therapeutic drug.
Before the syringe 10 is used, the first medicine 20 is stored in the first storage chamber 110, where the first medicine 20 is a liquid medicine. The second medicine 30 is stored in the second storage chamber 210 and the second storage chamber 210 is maintained in a vacuum state. In use, as shown in FIG. 5, the second core rod 310 is pushed such that the second core rod 310 breaks through the blocking of the circlip 322, thereby causing one end of the lead 400 to pierce the septum cap 230. Since the second storage cavity 210 is in a vacuum state, the first medicine 20 in the first storage cavity 110 can effectively enter the second storage cavity 210 through the guide pin 400, and the mixing of the first medicine 20 and the second medicine 30 is accelerated. When the first medicine 20 is completely filled in the second storage chamber 210, the first medicine 20 is effectively mixed with the second medicine 30.
Referring further to fig. 6, the first core 220 may be pushed to move in the first storage chamber 110 to flush the pipeline with the first medicine 20. The concentration of the mixed drug may also be controlled by pushing the first plunger 220 to control the amount of the first drug 20 in the first reservoir 110. The second core rod 310 is pushed continuously, so that the mixed medicine in the second storage cavity 210 is completely guided into the first storage cavity 110 by the guide groove 420 and the guide cavity 410 of the guide pin 400, and a certain concentration of mixed medicine is obtained in the first storage cavity 110.
Referring to fig. 7, the first core rod 220 and the second core rod 310 are further pushed to further push the mixed medicine with a certain concentration in the first storage cavity 110 out through the injection port 120 of the outer sleeve 100, thereby completing the injection of the medicine.
The syringe 10 is not only functionally versatile, but also can be used to dispense different concentration requirements. Meanwhile, in the configuration process, only the first core rod 220 and/or the second core rod 310 are pushed, so that the operation is simple, the medicine is effectively prevented from contacting the outside, and the medicine is prevented from being polluted.
The above-described embodiments represent only a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A syringe, comprising:
The side wall of the outer sleeve encloses a first storage cavity which is used for storing a first medicine;
One end of the first piston piece is arranged in the first storage cavity in a penetrating way and can move in the first storage cavity, a second storage cavity is formed in the first piston piece and is used for storing a second medicine, one end of the first piston piece is closed, and the second storage cavity penetrates through the other end of the first piston piece;
One end of the second piston piece can be penetrated in the second storage cavity by the other end of the first piston piece; and
The guide needle is provided with a guide cavity, the guide cavity penetrates through one end of the guide needle, the side wall of the other end of the guide needle is provided with a guide groove, the guide groove is communicated with the guide cavity, the other end of the guide needle is fixed on one end of the second piston member, the second piston member can move in the second storage cavity, the guide needle is driven to move, and one end of the guide needle can puncture one end of the first piston member and penetrate through the first storage cavity;
The second piston piece comprises a second core rod and a clamping piece, a second clamping groove is formed in the inner wall of the second storage cavity, the clamping piece is arranged in the second clamping groove, an elastic retainer ring is arranged on the inner wall of the clamping piece, one end of the second core rod penetrates through the second storage cavity, and the end face of one end of the second core rod can be abutted against the elastic retainer ring;
The second storage cavity is in a vacuum state;
the first piston piece comprises a first core rod and a separation plug, the side wall of the first core rod forms a second storage cavity, the second storage cavity penetrates through two opposite ends of the first core rod, the separation plug is arranged at one end of the first core rod to seal one end of the first core rod, and one end of the guide pin can pierce the separation plug;
The second piston piece further comprises a third core bar, the clamping piece is sleeved at one end of the third core bar, the second clamping groove penetrates through the other end of the first piston piece, and one end of the third core bar penetrates through the second clamping groove, so that the clamping piece is effectively abutted to the inner wall of the second clamping groove; and one end of the third core rod is provided with a sliding hole, the sliding hole penetrates through the other end of the third core rod, the sliding hole is communicated with the second storage cavity, and the second core rod can penetrate through the sliding hole and is arranged in the second storage cavity in a penetrating mode.
2. The syringe of claim 1, wherein a first slot is formed in an inner wall of the first core pin at one end, and the isolation plug is disposed in the first slot.
3. A syringe according to claim 1 or 2, wherein the isolation plug is an elastomeric plug body.
4. The syringe of claim 1 or 2, wherein a piston is sleeved on an outer wall of one end of the first core rod, and an outer wall of the piston abuts against an inner wall of the first storage cavity.
5. The syringe of claim 1 wherein the circlip is comprised of a plurality of spaced apart elastomeric stops.
6. The syringe of claim 1, wherein the circlip is an annular ring.
7. The syringe of claim 1, wherein the sliding bore has an inner diameter that is the same size as an inner diameter of the second reservoir chamber, the sliding bore having an inner diameter that matches an outer diameter of the second core pin.
8. The syringe of any one of claims 1-7, wherein a seal ring is clamped at one end of the second core rod, and an outer wall of the seal ring is capable of abutting against an inner wall of the second storage cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364681.4A CN109350515B (en) | 2018-11-16 | 2018-11-16 | Injection syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364681.4A CN109350515B (en) | 2018-11-16 | 2018-11-16 | Injection syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109350515A CN109350515A (en) | 2019-02-19 |
| CN109350515B true CN109350515B (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811364681.4A Active CN109350515B (en) | 2018-11-16 | 2018-11-16 | Injection syringe |
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| Country | Link |
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| CN (1) | CN109350515B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538363B (en) * | 2019-09-27 | 2024-06-14 | 四川大学华西医院 | Post-dilution injection type rescue syringe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076370A (en) * | 1992-03-19 | 1993-09-22 | 哈伯利医疗技术有限公司 | Telescoping, pharmaceutical mixing container |
| FR2717086A1 (en) * | 1994-03-11 | 1995-09-15 | Debiotech | Syringe system for mixing two compounds |
| CN1133003A (en) * | 1993-09-07 | 1996-10-09 | 生物技术公司 | Syringe device for mixing two compounds |
| CN102935255A (en) * | 2012-10-30 | 2013-02-20 | 无锡耐思生物科技有限公司 | Pre-filling-and-sealing syringe structure for mixing |
| CN102940920A (en) * | 2012-10-30 | 2013-02-27 | 无锡耐思生物科技有限公司 | Mixing pre-filled and sealed injector |
| CN209286165U (en) * | 2018-11-16 | 2019-08-23 | 阳普医疗（湖南）有限公司 | Syringe |
-
2018
- 2018-11-16 CN CN201811364681.4A patent/CN109350515B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076370A (en) * | 1992-03-19 | 1993-09-22 | 哈伯利医疗技术有限公司 | Telescoping, pharmaceutical mixing container |
| CN1133003A (en) * | 1993-09-07 | 1996-10-09 | 生物技术公司 | Syringe device for mixing two compounds |
| FR2717086A1 (en) * | 1994-03-11 | 1995-09-15 | Debiotech | Syringe system for mixing two compounds |
| CN102935255A (en) * | 2012-10-30 | 2013-02-20 | 无锡耐思生物科技有限公司 | Pre-filling-and-sealing syringe structure for mixing |
| CN102940920A (en) * | 2012-10-30 | 2013-02-27 | 无锡耐思生物科技有限公司 | Mixing pre-filled and sealed injector |
| CN209286165U (en) * | 2018-11-16 | 2019-08-23 | 阳普医疗（湖南）有限公司 | Syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109350515A (en) | 2019-02-19 |
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