Disposable cartridge syringe compatible with long and short cartridge vials and pre-filled vials

Abstract

The utility model discloses a disposable cassette syringe with the functions of compatible long and short cassette medicine bottles and preloaded medicine bottles, belongs to the technical field of syringes, and comprises a sleeve, a disposable injection needle is detachably installed at one end of the sleeve, a puncture needle with holes is arranged at the inner end of the sleeve, the puncture needle with holes and the disposable injection needle are communicatively arranged, a screw cap is detachably installed at the other end of the sleeve, a push rod is slidably connected to the inner wall of the screw cap, and the outer diameter size of the push rod is matched with the inner diameter size of the screw cap. The device is provided with an injection needle, can be compatible with long and short medicine bottles, can be preloaded with medicine, can save a certain amount of time in an emergency or busy medical environment, has a simple structure, is convenient to operate, and has high practicality.

Description

Technical Field

[0001] This utility model relates to the field of syringes, and more specifically, to a disposable cartridge syringe that is compatible with both long and short cartridge vials and pre-filled vials. Background Technology

[0002] Cartridge injectors are used in conjunction with cartridge anesthetic vials. The vials contain pre-filled anesthetic solutions and undergo high-temperature sterilization to ensure sterility and safety. During clinical use, the anesthetic solution in the vial is injected into the body through the single channel of the needle connected to the cartridge, propelled by the plunger of the injector. This avoids the risk of drug exposure and contamination. Currently, there are two length sizes of cartridge vials available: a long vial with a capacity of 2.0 mm and a short vial with a capacity of 1.7 mm. Existing metal cartridge injectors are not disposable and their structure is incompatible with both long and short vials and pre-filled vials. They also cannot be equipped with needle tips and require on-site disinfection with alcohol, filling of the vial, and installation of the needle by medical personnel. Furthermore, existing metal cartridge injectors can only hold short vials; when a larger dose of anesthetic is needed, a new vial must be replaced. This increases the complexity of operation for medical personnel and may lead to drug waste. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a disposable cartridge syringe that is compatible with both long and short cartridge bottles and pre-filled bottles. It aims to improve upon existing metal cartridge syringes, which are not disposable, have structural limitations preventing compatibility with both long and short cartridge bottles and pre-filled bottles, cannot include a needle tip, and require on-site disinfection with alcohol, filling of the bottle, and installation of the needle by medical personnel during clinical use. Furthermore, existing metal cartridge syringes can only hold short cartridge bottles; when a larger dose of anesthetic is needed, a new cartridge must be replaced, increasing the complexity of operation for medical personnel and potentially leading to wasted medication.

[0004] This invention is implemented as follows: a disposable cartridge syringe compatible with both long and short cartridge medicine bottles and pre-filled medicine bottles, comprising a sleeve, one end of which is detachably fitted with a disposable injection needle, and the inner end of the sleeve is provided with a perforated puncture needle, which is connected to the disposable injection needle. The other end of the sleeve is detachably fitted with a screw cap, and the inner wall of the screw cap is slidably connected to a push rod, the outer diameter of which is matched with the inner diameter of the screw cap. The perforated puncture needle is injection molded in one piece with the sleeve. The perforated puncture needle is used to pierce the rubber stopper at the front of the cartridge medicine bottle to form a passage for injection during use, allowing the liquid medicine in the bottle to enter the injection needle through the puncture needle at the bottom of the sleeve and finally be injected into the human body. The sleeve is made of transparent ABS polymer material, and one end of the sleeve has a 6:100 taper Luer connector to accommodate the installation of the disposable injection needle.

[0005] In the preferred embodiment of this utility model, a groove is provided on the outside of one end of the push rod and an O-ring is installed in the groove. The O-ring is made of nitrile rubber. The inner and outer diameters and wire diameter of the O-ring are strictly matched with the groove of the push rod and the inner diameter of the cartridge medicine bottle. When the push rod is pushed forward, the O-ring plays the role of sealing and transmitting pressure, and achieves the function of generating a certain negative pressure when suctioning back without damaging the cartridge medicine bottle.

[0006] In the preferred embodiment of this utility model, the inside of the screw cap is configured with a stepped structure. The stepped structure inside the screw cap ensures the compatible installation and use of both long and short medicine bottles. Furthermore, the short medicine bottle limiting stepped platform structure and the long medicine bottle limiting stepped platform structure together enhance the stability of the installation of both long and short medicine bottles.

[0007] In the preferred embodiment of this utility model, one end of the cap is provided with a lower extension wing, and one end of the sleeve is provided with an upper edge wing. The lower extension wing of the cap is configured to cooperate with the upper edge wing of the sleeve. To meet the needs of the operator, this device can operate in two modes: non-pre-filled and pre-filled. In the non-pre-filled mode, the operator opens the cap and installs the bottle into the sleeve as needed. The bottle is fitted to the stepped structure inside the cap according to its length. The cap is then tightened, and the push rod is pushed to initiate the injection. In emergency situations or busy medical environments, pre-filled bottles are available before shipment. The process involves the production staff opening the cap, placing the vial into the sleeve, and then moving the cap via an extension wing at its lower end to suspend it on the upper edge wing of the sleeve. This design ensures that when the vial is pre-loaded into the syringe, the perforated needle inside the sleeve cannot puncture the stopper at the front of the vial before use by medical personnel. The extension wing at the lower end of the cap hooks onto the two wings of the sleeve, keeping the vial suspended within the sleeve and maintaining its integrity before use. When the medical personnel use the vial, they press the cap down and lock it in place with the sleeve. Inside the sleeve, the perforated needle punctures the stopper at the front of the vial, creating a passage for the medication.

[0008] In a preferred embodiment of this invention, the disposable injection needle is provided with an injection needle sheath.

[0009] In a preferred embodiment of this utility model, one end of the push rod is provided with an external support.

[0010] The beneficial effects of this utility model are as follows: This utility model, through the above design, provides a disposable cartridge syringe compatible with both long and short cartridge bottles and pre-filled bottles. When using a non-pre-filled bottle, the operator opens the cap, places the bottle inside the sleeve as needed, and tightens the cap and sleeve. The puncture needle with a hole punctures the rubber stopper at the front of the cartridge bottle to create a drug delivery pathway. The plunger is then pushed through a disposable injection needle to complete the injection. When using a pre-filled bottle, the operator opens the cap, places the bottle inside the sleeve, and moves the cap via the extended wing at the lower end of the cap, suspending it on the upper edge wing of the sleeve. The upper edge wing of the sleeve, in conjunction with the extended wing at the lower end of the cap, keeps the bottle suspended inside the sleeve, maintaining its integrity. During operation, the operator presses the cap down and locks it in place with the sleeve. The inner sleeve punctures the rubber stopper at the front of the cartridge bottle, creating a drug delivery pathway and completing the injection. The device comes with an injection needle, is compatible with both long and short medicine bottles, and can be pre-filled with medicine. It can save time in emergency situations or busy medical environments. It is also simple in structure, easy to operate, and highly practical. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a disposable cartridge syringe that is compatible with both long and short cartridge medicine bottles and pre-filled medicine bottles, provided by an embodiment of this utility model.

[0013] Figure 2 A schematic diagram of the internal structure of the screw cap provided for an embodiment of this utility model;

[0014] Figure 3 Another structural schematic diagram provided for an embodiment of this utility model;

[0015] Figure 4 A schematic diagram of the internal structure of the sleeve provided for an embodiment of this utility model.

[0016] In the diagram: 100 - Sleeve; 101 - Upper edge wing of sleeve; 110 - Perforated puncture needle; 200 - Disposable injection needle; 210 - Injection needle sheath; 300 - Screw cap; 310 - Lower extension wing of screw cap; 320 - Short vial limiting stepped platform structure; 330 - Long vial limiting stepped platform structure; 400 - Push rod; 410 - O-ring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Please see Figures 1-4 This utility model provides a technical solution: a disposable cartridge syringe compatible with both long and short cartridge medicine bottles and pre-filled cartridge medicine bottles, including a sleeve 100. A disposable injection needle 200 is detachably mounted on one end of the sleeve 100. A perforated puncture needle 110 is provided at the inner end of the sleeve 100, communicating with the disposable injection needle 200. A cap 300 is detachably mounted on the other end of the sleeve 100. A push rod 400 is slidably connected to the inner wall of the cap 300. The outer diameter of the push rod 400 is... The inner diameter of the cap is set to match the screw cap 300. The puncture needle 110 with a hole is designed to be injection molded in one piece with the sleeve 100. The puncture needle 110 with a hole is used to pierce the rubber stopper at the front of the cartridge medicine bottle to form a passage for injection during use, so that the medicine in the medicine bottle can enter the injection needle through the puncture needle at the bottom of the sleeve and finally be injected into the human body. The sleeve 100 is made of transparent ABS polymer material. One end of the sleeve 100 has a 6:100 taper Luer connector to match the installation of the disposable injection needle 200.

[0019] In some specific implementation schemes, a groove is provided on the outside of one end of the push rod 400 and an O-ring 410 is installed in the groove. The O-ring 410 is made of nitrile rubber. The inner and outer diameters and wire diameter of the O-ring 410 are strictly matched with the groove of the push rod and the inner diameter of the cartridge medicine bottle. When the push rod 400 is pushed forward, the O-ring 410 plays the role of sealing and transmitting pressure, and achieves the function of generating a certain negative pressure during back suction without damaging the cartridge medicine bottle.

[0020] In some specific implementation schemes, the screw cap 300 is internally configured with a stepped structure. The stepped structure inside the screw cap 300 ensures compatible installation and use of both long and short medicine bottles. Furthermore, the short medicine bottle limiting stepped platform structure 320 and the long medicine bottle limiting stepped platform structure 330 together enhance the stability of the installation of both long and short medicine bottles.

[0021] In some specific implementation schemes, one end of the screw cap 300 is provided with a lower extension wing 310, and one end of the sleeve 100 is provided with an upper edge wing 101. The lower extension wing 310 of the screw cap is configured to cooperate with the upper edge wing 101 of the sleeve. To meet the needs of the operators, this device can operate in two modes: non-pre-filled and pre-filled. In the non-pre-filled operation, the operator opens the screw cap 300, installs the medicine bottle into the sleeve 100 as needed, and the medicine bottle is installed in a way that accommodates the stepped structure inside the screw cap 300 according to its own length. Then, the screw cap 300 is tightened in conjunction with the sleeve 100, and the push rod is pushed to perform the injection. In emergency situations or busy medical environments, the operation of the pre-filled medicine bottle involves opening the screw cap 300. The vial is placed inside the sleeve 100. The cap 300 is moved and suspended on the upper edge wing 101 of the sleeve 100 via the lower extension wing 310. Through the structure of the upper edge wing 101 of the sleeve, when the vial is pre-loaded into the cartridge syringe, it is ensured that the perforated needle 110 inside the sleeve 100 will not puncture the rubber stopper at the front of the vial before use by medical personnel. At this time, due to the effect of the structure of the lower extension wing 310 of the cap, the extension wing hooks the two wings on the sleeve structure, so that the vial is suspended inside the sleeve 100 before use, maintaining the integrity of the vial. When the staff operates, the cap 300 is pressed down and locked to the sleeve 100. Inside the sleeve 100, the perforated needle 110 punctures the rubber stopper at the front of the vial, forming a passage for the medicine.

[0022] In some specific implementations, the disposable injection needle 200 is provided with an injection needle sheath 210.

[0023] In some specific implementation schemes, one end of the push rod 400 is provided with an external support.

[0024] Working principle: In use, for non-pre-filled vials, the operator opens the cap 300, installs the vial into the sleeve 100 as needed, and tightens the cap 300 in conjunction with the sleeve 100. The puncture needle 110 punctures the rubber stopper at the front of the cartridge vial to create a pharmaceutical pathway, pushing the push rod 400 to complete the injection through the disposable injection needle 200. For pre-filled vials, the operator opens the cap 300 and places the vial into the sleeve 100. The cap 300 is moved and suspended on the upper edge wing 101 of the sleeve 100 via the lower extension wing 310 of the cap. The upper edge wing 101 of the sleeve and the lower extension wing 310 of the cap keep the medicine bottle suspended inside the sleeve 100, maintaining the integrity of the medicine bottle. When the operator operates the medicine bottle, the cap 300 is pressed down and locked to the sleeve 100. The sleeve 100 inside the sleeve 100 punctures the rubber stopper at the front of the cartridge medicine bottle, forming a passage for the medicine and completing the injection.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A disposable cartridge syringe compatible with both long and short cartridge vials and pre-filled vials, characterized in that, The device includes a sleeve, one end of which is detachably fitted with a disposable injection needle. The inner end of the sleeve is provided with a perforated puncture needle, which is connected to the disposable injection needle. The other end of the sleeve is detachably fitted with a screw cap, and the inner wall of the screw cap is slidably connected with a push rod, the outer diameter of which is matched with the inner diameter of the screw cap.

2. The disposable cartridge syringe compatible with both long and short cartridge bottles and pre-filled cartridge bottles according to claim 1, characterized in that, The push rod has a groove on the outside of one end, and an O-ring is installed in the groove.

3. The disposable cartridge syringe compatible with both long and short cartridge bottles and pre-filled cartridge bottles according to claim 1, characterized in that, The inside of the screw cap is designed with a stepped structure.

4. The disposable cartridge syringe compatible with both long and short cartridge bottles and pre-filled cartridge bottles according to claim 1, characterized in that, One end of the cap is provided with a lower end extension wing, and one end of the sleeve is provided with an upper end edge wing. The lower end extension wing of the cap is configured to cooperate with the upper end edge wing of the sleeve.

5. The disposable cartridge syringe compatible with both long and short cartridge bottles and pre-filled cartridge bottles according to claim 1, characterized in that, The disposable injection needle is provided with an injection needle sheath.

6. The disposable cartridge syringe compatible with both long and short cartridge vials and pre-filled vials according to claim 1, characterized in that, One end of the push rod is provided with an external support.

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