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CN-224220513-U - With needles prefilled syringe

CN224220513UCN 224220513 UCN224220513 UCN 224220513UCN-224220513-U

Abstract

The utility model provides a prefilled syringe with a needle, which comprises a needle cylinder and a needle body, wherein the needle body is positioned in a holding hole at the front end of the needle cylinder, the holding hole is communicated with an inner cavity of the needle cylinder, an elastic isolation cap is arranged on the needle body, the elastic isolation cap is supported between the side wall of the holding hole and the needle body, the upper end of the holding hole is partitioned into an adhesive area isolated from the inner cavity of the needle cylinder, and the needle body is fixed in the holding hole through adhesive positioned in the adhesive area. By adopting the device, the needle body can be easily assembled in the holding hole, and the elastic isolation cap can isolate the viscose from the pre-filled and sealed liquid medicine, so that the pre-filled and sealed liquid medicine can be stored in the needle cylinder for a long time without influencing the use.

Inventors

  • SUN WENBIN
  • WANG ZHOU
  • WU LIQUN

Assignees

  • 杭州钱塘隆越生物科技有限公司

Dates

Publication Date
20260512
Application Date
20250116

Claims (9)

  1. 1. The utility model provides a take pre-filling and sealing syringe of needle, includes cylinder (1), needle body (2) are located in holding pinhole (12) of cylinder (1) front end, holding pinhole (12) with cylinder inner chamber (11) intercommunication, a serial communication port, be equipped with elasticity isolation cap (3) on needle body (2), this elasticity isolation cap (3) support between holding pinhole (12) lateral wall and needle body (2), and separate holding pinhole (12) upper end into viscose district (121) with cylinder inner chamber (11) isolation, needle body (2) are fixed in holding pinhole (12) through viscose (4) that are located viscose district (121).
  2. 2. A prefilled syringe with needle according to claim 1, characterized in that the front end of the needle cylinder (1) forms a grip post (13), the grip hole (12) being formed by the lumen of the grip post (13).
  3. 3. A prefilled syringe with needle according to claim 2, characterized in that the outside of the needle holding column (13) is supported with a stiffening rib (14).
  4. 4. The prefilled syringe with needle of claim 1, wherein said glue area (121) is composed of an upper hole (1211), a lower hole (1212), and the upper hole (1211) has a larger pore size than the lower hole (1212).
  5. 5. The prefilled syringe of claim 4, wherein said upper bore (1211) and said lower bore (1212) are connected by a first transition taper bore (1213).
  6. 6. The prefilled syringe with needle of claim 1, wherein said grip orifice (12) is divided from top to bottom into an adhesive zone (121), a spacer cap zone (122), a guide zone (123).
  7. 7. The needled pre-filled syringe of claim 6, in which the guide zone (123) has a smaller aperture than the isolation cap zone (122).
  8. 8. The prefilled syringe with needle of claim 6, wherein said isolation cap area (122) is connected to said guide area (123) by a second transition taper (124).
  9. 9. A prefilled syringe with needle according to claim 1, characterized in that the lower end of the needle body (2) is flush or nearly flush with the lower end of the elastic isolation cap (3).

Description

With needles prefilled syringe Technical Field The utility model belongs to the technical field of medical instruments, and particularly relates to a prefilled syringe with a needle. Background The pre-filled and sealed syringe (PFS) is a novel high-end packing material capable of directly filling medicine liquid and used for injection, combines the functions of a medicine packaging container and the functions of the syringe into a whole, can be directly used for filling medicine liquid in medicine production and can be directly used for injection in medicine use, the step of taking the medicine liquid from an ampoule bottle or a penicillin bottle by using the syringe in the prior art is omitted, and the medicine packaging container is very convenient for medical staff or patients to directly use. Because of the advantages described above, pre-filled syringes are particularly widely used in biological agents and pharmaceuticals. Pre-filled syringes currently come in both types with and without needles. In order to prevent biological medicines in the syringe from being polluted, the front end of the syringe of the prefilled syringe without the injection needle is often provided with a protective cap for sealing the syringe, and when the prefilled syringe is used, the protective cap is required to be taken down, the injection needle is assembled at the front end of the syringe, and then injection is carried out. However, this process still allows the medicine in the cartridge to come into contact with the outside air, thereby affecting the medicine properties. The prefilled syringe with needle can fix the needle head by injection molding an insert, but the equipment cost is high and the investment is large. A large part of pre-filling and sealing syringe with needle is to fix the needle head on the needle cylinder by using UV glue, but the pre-filling and sealing syringe does not isolate the UV glue from the liquid medicine at present, the biological agent liquid medicine in the syringe can be directly contacted with the UV glue, and the UV glue can cause irrecoverable damage to the drug property of the biological agent liquid medicine after long-term contact, thereby influencing the use effect. Disclosure of utility model The utility model aims to solve the problems in the prior art, and provides a prefilled syringe with a needle, wherein an adhesive area is isolated from an inner cavity of a syringe through an elastic isolation cap, so that medicines in the syringe are prevented from contacting with adhesive to influence medicine property. The prefilled syringe with the needle comprises a needle cylinder and a needle body, wherein the needle body is positioned in a holding hole at the front end of the needle cylinder, the holding hole is communicated with an inner cavity of the needle cylinder, an elastic isolation cap is arranged on the needle body, the elastic isolation cap is supported between the side wall of the holding hole and the needle body, the upper end of the holding hole is partitioned into an adhesive area isolated from the inner cavity of the needle cylinder, and the needle body is fixed in the holding hole through adhesive positioned in the adhesive area. By adopting the device, the needle body can be easily assembled in the holding hole, and the elastic isolation cap can isolate the viscose from the pre-filled and sealed liquid medicine, so that the pre-filled and sealed liquid medicine can be stored in the needle cylinder for a long time without influencing the use. Preferably, the front end of the needle cylinder forms a needle holding column, and the needle holding hole is formed by the inner cavity of the needle holding column. Therefore, the wall thickness of the holding pin hole is reduced, uneven wall thickness caused by thermal expansion and cold contraction of materials during injection molding can be avoided, the size of the holding pin hole is ensured to be more uniform, and the production and the assembly are more convenient. Preferably, the outside of the grip post is supported with a reinforcing rib. Thus, the strength of the needle holding column can be increased, and the service life is longer. Preferably, the adhesive area is composed of an upper hole and a lower hole, and the aperture of the upper hole is larger than that of the lower hole. Therefore, the contact area between the adhesive and the holding pin hole can be increased, and the needle body can be firmly bonded due to the bonding surfaces with different angles. Preferably, the upper and lower bores are connected by a first transition taper bore. In this way, the elastomeric isolation cap can be more easily slid into the grip aperture during assembly. Preferably, the holding pin hole is divided into an adhesive area, a separation cap area and a guide area from top to bottom. The guiding area is reserved with a space for inserting the needle body, so that the needle body can be assembled conveniently, and the liqui