GB2623572A - Novel pre-filled syringe - Google Patents
Novel pre-filled syringe Download PDFInfo
- Publication number
- GB2623572A GB2623572A GB2215591.5A GB202215591A GB2623572A GB 2623572 A GB2623572 A GB 2623572A GB 202215591 A GB202215591 A GB 202215591A GB 2623572 A GB2623572 A GB 2623572A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circular ring
- connection portion
- plunger rod
- syringe barrel
- piston
- 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.)
- Pending
Links
- 229940071643 prefilled syringe Drugs 0.000 title claims abstract description 24
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000008155 medical solution Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 4
- 229920001400 block copolymer Polymers 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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
- A61M5/31—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
-
- 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
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
A pre-filled syringe comprising a syringe barrel 2 and a plunger rod 3, a piston 4 is mounted at a front end of the plunger rod 3. A plurality of arc-shaped bodies 5 are arranged in the piston and form a circular ring 5 with an internal thread, the circular ring’s front-end diameter is less than the rear end diameter. A connection portion 6 has an external thread and is arranged on the front end of the plunger rod 3, the shape of the connection portion 6 matches that of the circular ring. In the piston, a first groove 7 used to accommodate the connection portion is arranged at the front end connection portion which can be screwed into the circular ring 5 in the first groove at the rear end so that adjacent arc-shaped bodies are separated locking the plunger rod in position, after passing through the circular ring, the connection portion can enter the first groove at the front end so that the arc-shaped bodies return to an original position.
Description
NOVEL PRE-FILLED SYRINGE
BACKGROUND OF THE INVENTION
[0001] 1. Technical Field
[0002] The present invention relates to the technical field of medical device, and in particular, to a novel pre-filled syringe.
[0003] 2. Description of Related Art
[0004] A pre-filled syringe has two functions of drug storage and common injection at the same time, is mainly used for packaging and storage of high-grade drugs and directly used for injection or surgical irrigation. The existing pre-filled syringe generally uses a clamp to clamp a plunger rod and a syringe barrel after filling medical solution, to prevent the medical solution from overflowing due to the accidental collision of the plunger rod during storage or transportation. In actual use, if the clamp is relatively tight with the syringe barrel, it is difficult to separate the clamp from the syringe barrel when using the syringe, which causes inconvenience for use, while if the clamp is relatively loose with the syringe barrel, it is not easy to reach the purpose of preventing the medical solution from overflowing due to the accidental collision of the plunger rod during storage or transportation.
BRIEF SUMMARY OF THE INVENTION
[0005] For the above-mentioned problems in the prior art, the present invention provides a novel pre-filled syringe to solve the above-mentioned technical problems [0006] In order to achieve the above purpose, a technical solution provided by the present invention is as follows: [0007] A novel pre-filled syringe includes a syringe barrel and a plunger rod, where a piston is mounted at a front end of the plunger rod, the piston is located in the syringe barrel and connected to the syringe barrel in a sliding manner, and a rear end of the plunger rod is located outside the syringe barrel; a plurality of arc-shaped bodies are arranged in the piston and enclose to form a circular ring, an internal thread is arranged in the circular ring, and the diameter of a front end of the circular ring is less than that of a rear end of the circular ring; a connection portion is arranged on the front end of the plunger rod, an external thread fitted to the internal thread is arranged on the connection portion, and the shape of the connection portion matches that of the circular ring; in the piston, a first groove used to accommodate the connection portion is arranged at the front end and the rear end of the circular ring, the connection portion can be screwed into the circular ring in the first groove at the rear end so that adjacent arc-shaped bodies are separated, and after passing through the circular ring, the connection portion can enter the first groove at the front end so that the arc-shaped bodies return to an original position; and a second groove matched to the shape of the circular ring is arranged in the syringe barrel.
[0008] Optionally, a cylinder is arranged between the plunger rod and the connection portion, one end of the cylinder is connected to the plunger rod, and the other end is connected to the rear end of the connection portion and the diameter of the cylinder is less than or equal to that of the front end of the circular ring.
[0009] Optionally, a needle adapter is arranged at the front end of the syringe barrel, an injection needle in communication with the inside of the syringe barrel is fixed on the needle adapter, and an injection needle cap is mounted on the needle adapter.
[0010] Optionally, the injection needle is adhered to the needle adapter.
[0011] Preferably, the syringe barrel is made of a cyclic block copolymer material. [0012] Optionally, the syringe barrel is pre-filled with the medical solution.
[0013] According to the novel pre-filled syringe of the present invention, after the syringe is filled with medical solution, the connection portion is screwed into the circular ring so that the adjacent arc-shaped bodies are separated, and the piston is extruded to protrude to the outside and abuts against the second groove, thereby preventing the medical solution from overflowing due to the accidental collision of the plunger rod, and in this process, the first grooves on the two sides of the circular ring approach the circular ring, which is beneficial to the deformation of the piston, when the syringe is used, the plunger rod is further screwed forward so that the connection portion enters the first groove at the front end, the circular ring returns to the original position under the action of elastic restoring force of the piston, and at this time, the piston of the plunger rod can be pushed forward to extrude the medical solution. It can be seen that the pre-filled syringe is easy to release the limit to the plunger rod during use while satisfying the requirement of fixing the plunger rod to prevent the medical solution from overflowing due to accidental collision of the plunger rod, so that the pre-filled syringe is convenient to use.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0014] Fig 1 is a schematic structural diagram of a novel pre-filled syringe according to the presentinvention; [0015] FIG. 2 is an enlargement view of part Am FIG. FIG. 1.
[0016] Fig 3 is a schematic diagram of a connection structure of a piston and a plunger rod; and [0017] FIG. 4 is a B-B sectional view of Fig. 3.
[0018] Reference Numerals: [0019] injection needle 1, syringe barrel 2, plunger rod 3, cylinder 31, piston 4, arc-shaped body 5, connection portion 6, first groove 7, second groove 8, needle adapter 9, injection needle cap 10, and medical solution 11.
DETAILED DESCRIPTION OF THE INVENTION
[0020] The technical solutions in the embodiments of the present invention are described clearly and completely in the following with reference to accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the invention without any creative efforts shall fall within the protection scope of the invention.
[0021] Embodiment. referring to FIGs Ito 4, this embodiment provides a novel pre-filled syringe including an injection needle 1, a syringe barrel 2, and a plunger rod 3, where a piston 4 is mounted at a front end of the plunger rod, the piston is located in the syringe barrel and connected to the syringe barrel in a sliding manner, and a rear end of the plunger rod is located outside the syringe barrel; a plurality of arc-shaped bodies 5 are arranged in the piston and enclose to form a circular ring, an internal thread is arranged in the circular ring, and the diameter of a front end of the circular ring is less than that of a rear end of the circular ring, a connection portion 6 is arranged on the front end of the plunger rod, an external thread fitted to the internal thread is arranged on the connection portion, the shape of the connection portion matches that of the circular ring, a cylinder 31 is arranged between the plunger rod and the connection portion, one end of the cylinder is connected to the plunger rod, and the other end is connected to the rear end of the connection portion; the diameter of the cylinder is less than or equal to that of the front end of the circular ring; in the piston, a first groove 7 used to accommodate the connection portion is arranged at the front end and the rear end of the circular ring; and a second groove 8 matched to the shape of the circular ring is arranged in the syringe barrel.
[0022] According to the above-mentioned novel pre-filled syringe, after the syringe is filled with medical solution 11, the connecting portion is screwed into the circular ring so that the adjacent arc-shaped bodies are separated, and the gasket is extruded to protrude to the outside and abuts against the second groove, thereby preventing the medical solution from overflowing due to the accidental collision of the plunger rod, and in this process, the first grooves on the two sides of the circular ring close to the circular ring, which is beneficial to the deformation of the piston; when the syringe is used, the plunger rod is further screwed forward so that the connecting portion enters the first groove at the front end, and the diameter of the cylinder is less than that of the front end of the circular ring, therefore, the circular ring returns to the original position under the elastic restoring force of the piston and limits the connection portion in the first groove at the front end, and at this time, the piston of plunger rod can be pushed forward to extrude the medical solution, It can be seen that the pre-filled syringe is easy to release the limit to the plunger rod during use while satisfying the requirement of fixing the plunger rod to prevent the medical solution from overflowing due to accidental collision of the plunger rod, so that the pre-filled syringe is convenient to use.
[0023] It should be noted that the above-mentioned connection portion and plunger rod can be arranged in various manners, for example, the diameter of the plunger rod is set to be less than or equal to that of the front end of the circular ring as long as the purpose that the connection portion can be screwed into the circular ring in the first groove at the rear end so that adjacent arc-shaped bodies are separated, and after passing through the circular ring, the connection portion can enter the first groove at the front end so that the arc-shaped bodies return to an original position, and no particular limitation is given herein; furthermore, the above-mentioned structure is a pre-filled syringe with an injection needle, and the connecting structure of the piston and the plunger rod is also applicable to a pre-filled syringe without an injection needle.
[0024] In an embodiment, a needle adapter 9 is arranged at the front end of the syringe barrel, the injection needle is fixed on the needle adapter and in communication with the inside of the syringe barrel, an injection needle cap 10 is mounted on the needle adapter to prevent the injection needle from accidentally injuring people during transportation, and during manufacturing, the injection needle can be connected to the needle adapter in an adhesive manner. In this embodiment, the syringe barrel is made of a cyclic block copolymer (CBC) material and such material, relative to existing ones, has the properties of crystal-clarity, cleanliness, safety and reliability.
[0025] It should be noted that references in the specification to one embodiment," "an embodiment," "an exemplary embodiment, some embodiments," etc., indicate that the embodiment described may include a particular feature, stmcture, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. Further, when a particular feature, structure or characteristic is described in connection with an embodiment, it would be within the knowledge of a person skilled in the art to achieve such feature, structure or characteristic in connection with other embodiments whether or not explicitly described.
[0026] It should be readily understood that the meaning of n," "above," and "over" in the present disclosure should be interpreted in the broadest manner such that "on" not only means directly on something but also includes the meaning of "on" something with an intermediate feature or a layer therebetween, and that "above' or "over-not only means the meaning of "above" or over something but can also include the meaning it is "above" or "over" something with no intermediate feature or layer therebetween (that is, directly on something).
[0027] Further, spatially relative terms, such as "beneath," "below, "lower,' above," "upper," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation illustrated in the figures The apparatus may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0028] It should be noted that the relational terms herein such as "first-and "second" are used only to differentiate an entity or operation from another entity or operation, and do not require or imply any actual relationship or sequence between these entities or operations. The terms"include","comprise", or any variants thereof are intended to cover a nonexclusive inclusion, so that a process, method, article, or device that includes a series of elements not only includes those elements, but also includes other elements not listed explicitly, or includes inherent elements of the process, method, article, or device. In the absence of more limitations, an element defined by "include a..." does not exclude other same elements existing in the process, method, article, or device including the element.
[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and equivalents thereof
Claims (6)
- What is claimed is: 1. A novel pre-filled syringe, comprising a syringe barrel (2) and a plunger rod (3), wherein a piston (4) is mounted at a front end of the plunger rod, the piston is located in the syringe barrel and connected to the syringe barrel in a sliding manner, and a rear end of the plunger rod is located outside the syringe barrel; characterized in that: a plurality of arc-shaped bodies (5) are arranged in the piston and enclose to form a circular ring, an internal thread is arranged in the circular ring, and the diameter of a front end of the circular ring is less than that of a rear end of the circular ring; a connection portion (6) is arranged on the front end of the plunger rod, an external thread fitted to the internal thread is arranged on the connection portion, and the shape of the connection portion matches that of the circular ring; in the piston, a first groove (7) used to accommodate the connection portion is arranged at the front end and the rear end of the circular ring, the connection portion can be screwed into the circular ring in the first groove at the rear end so that adjacent arc-shaped bodies are separated, and after passing through the circular ring, the connection portion can enter the first groove at the front end so that the arc-shaped bodies return to an original position; and a second groove (8) matched to the shape of the circular ring is arranged in the syringe barrel.
- 2. The novel pre-filled syringe according to claim 1, characterized in that a cylinder (31) is arranged between the plunger rod and the connection portion, one end of the cylinder is connected to the plunger rod, and the other end is connected to the rear end of the connection portion; and the diameter of the cylinder is less than or equal to that of the front end of the circular ring.
- 3. The novel pre-filled syringe according to claim 1, characterized in that a needle adapter (9) is arranged at the front end of the syringe barrel, an injection needle (1) in communication with the inside of the syringe barrel is fixed on the needle adapter, and an injection needle cap (10) is mounted on the needle adapter.
- 4. The novel pre-filled syringe according to claim 3, characterized in that the injection needle is adhered to the needle adapter.
- 5. The novel pre-filled syringe according to any one of claims 1 to 4, characterized in that the syringe barrel is made of a cyclic block copolymer material.
- 6. The novel pre-filled syringe according to claim 1, characterized in that the syringe barrel is pre-filled with medical solution (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2215591.5A GB2623572A (en) | 2022-10-21 | 2022-10-21 | Novel pre-filled syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2215591.5A GB2623572A (en) | 2022-10-21 | 2022-10-21 | Novel pre-filled syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202215591D0 GB202215591D0 (en) | 2022-12-07 |
| GB2623572A true GB2623572A (en) | 2024-04-24 |
Family
ID=84818714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2215591.5A Pending GB2623572A (en) | 2022-10-21 | 2022-10-21 | Novel pre-filled syringe |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2623572A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6436075B1 (en) * | 2000-10-18 | 2002-08-20 | Hsueh-Cheng Liao | Syringe |
| EP1260241A1 (en) * | 2000-03-02 | 2002-11-27 | Daikyo Seiko, LTD. | Prefilled syringe assembly |
| WO2022131789A1 (en) * | 2020-12-15 | 2022-06-23 | 삼천당제약주식회사 | Syringe containing ophthalmic formulation |
-
2022
- 2022-10-21 GB GB2215591.5A patent/GB2623572A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1260241A1 (en) * | 2000-03-02 | 2002-11-27 | Daikyo Seiko, LTD. | Prefilled syringe assembly |
| US6436075B1 (en) * | 2000-10-18 | 2002-08-20 | Hsueh-Cheng Liao | Syringe |
| WO2022131789A1 (en) * | 2020-12-15 | 2022-06-23 | 삼천당제약주식회사 | Syringe containing ophthalmic formulation |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202215591D0 (en) | 2022-12-07 |
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