Anti-overflow device for medicine preparation

Abstract

The utility model discloses an anti-overflow device for medicine preparation, which belongs to the technical field of medical instruments and comprises a syringe, a needle plug, a needle head and a needle head. The infusion needle is composed of a hose and a needle head installed at one end of the hose, the other end of the hose is arranged on the pintle in a sleeving mode through a needle handle connecting sleeve, and any position of the hose is wound and knotted; the needle cap is provided with a limiting part, the needle cap is detachably installed on the head of the infusion needle, and the needle handle connecting sleeve can abut against the pintle in the axial direction of the needle handle connecting sleeve through the limiting part; through the design of knotting of the hose and limiting of the needle cap, the risk of medicine overflow is greatly reduced, and therefore medicine waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a drug preparation spill prevention device. Background Technology

[0002] Cytotoxic drugs are biologically harmful substances that can cause damage to the reproductive, urinary, hepatic, and renal systems through skin contact or inhalation, as well as teratogenicity or impaired fertility. Almost all chemotherapy drugs for cancer are cytotoxic, killing tumor cells while also causing toxic side effects on normal cells. However, cytotoxic drugs are a crucial lifeline for cancer patients and indispensable for cancer treatment. Improper use can not only fail to treat the patient but also seriously endanger the health and lives of healthcare workers exposed to them, leading to headaches, hair loss, skin irritation, and even infertility, fetal malformations, or tumors.

[0003] Extravasation of chemotherapy drugs during intravenous injection is a significant issue. Especially during transport within hospitals, situations such as needle cap detachment or loosening of the infusion needle and syringe can lead to drug spillage, resulting in waste, personnel hazards, and environmental pollution. To prevent such accidents, a safer and more convenient spill prevention device for drug preparation is needed. Utility Model Content

[0004] This utility model provides a drug preparation spill prevention device to solve the problems in the prior art.

[0005] The present invention adopts the following technical solution: a drug preparation spill prevention device, comprising: a syringe with a plunger; an infusion needle consisting of a tubing and a needle tip installed at one end of the tubing, the other end of the tubing being fitted onto the plunger via a needle handle connecting sleeve, the tubing being wound and knotted at any point; and a needle cap with a limiting part, the needle cap being detachably installed on the head of the infusion needle, and the limiting part enabling the needle handle connecting sleeve to abut against the plunger along its axial direction.

[0006] Preferably, the open end of the needle cap is fitted onto the head of the syringe, and the side of the needle cap away from its open end has a perforation, with the tubing at least partially located within the perforation.

[0007] Preferably, the open end of the needle cap has a plurality of spring arms distributed in a ring, and when the needle cap is fitted onto the syringe, the plurality of spring arms elastically abut against the outer peripheral wall of the syringe.

[0008] Preferably, the needle cap has at least two spring arms distributed in a ring at its open end, and each spring arm has a radially outwardly inclined pressure block at its end. The needle cap is fitted with a rotating sleeve and the two are threaded together. When the needle cap is fitted onto the syringe, the rotating sleeve rotates relative to the needle cap and moves in the direction of several spring arms to squeeze several pressure blocks, so that several spring arms bend inward and press against the outer peripheral wall of the syringe.

[0009] Preferably, the end of the rotating sleeve near one of the spring arms has an inner rounded corner.

[0010] Preferably, the needle cap is further provided with a limiting member. When the rotating sleeve presses against several spring arms against the syringe, at least one end of the rotating sleeve abuts against the limiting member to limit the axial movement of the rotating sleeve.

[0011] Preferably, a rubber pad that fits against the inner wall is installed on the inner side of the opening end of the needle cap.

[0012] Preferably, the inner wall of the needle cap on the side away from its opening end is provided with an annular protrusion, and the needle handle connecting sleeve is embedded in the annular protrusion to achieve its radial limitation.

[0013] Preferably, the needle cap has a locking slot that cuts into the perforation and the annular protrusion from its outer peripheral wall, and the length direction of the locking slot is adapted to the axial length of the needle cap. The thickness of the locking slot is less than the diameter of the annular protrusion, and the tubing can enter the perforation and the annular protrusion through the locking slot.

[0014] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0015] By incorporating a knotted tubing and a limiting design for the needle cap, the risk of drug spillage is significantly reduced, thus minimizing drug waste. Simultaneously, it effectively prevents drug extravasation, reducing the risk of personnel coming into contact with chemotherapy drugs. Furthermore, the device is relatively simple to operate; a good seal is achieved simply by knotting the tubing and installing the needle cap. This enhances safety and convenience during operation, reducing psychological stress and operational difficulties caused by concerns about drug spillage. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the syringe and infusion needle of this utility model;

[0018] Figure 2This is a partial three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 This is a partial three-dimensional structural cross-sectional view of the present invention;

[0020] Figure 4 This is an exploded view of the infusion needle and needle cap of this utility model;

[0021] Figure 5 This is an exploded view of the needle cap and rotating sleeve of this utility model.

[0022] Figure Labels

[0023] 1-Syringe; 11-Needle plug; 2-Infusion needle; 21-Tube; 22-Needle tip; 23-Needle handle connecting sleeve; 3-Needle cap; 31-Limiting part; 32-Perforation; 33-Elastic arm; 331-Pressure block; 34-Limiting component; 35-Rubber pad; 36-Annular protrusion; 37-Clamping seam; 4-Rotating sleeve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. 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.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1 to 5 As shown, this embodiment of the present invention provides a drug preparation spill prevention device, which mainly includes a syringe 1, an infusion needle 2, and a needle cap 3. The syringe 1 has a needle plug 11 for pushing the drug; the infusion needle 2 consists of a tubing 21 and a needle 22 installed at one end of the tubing 21, and the other end of the tubing 21 is fitted onto the needle plug 11 through a needle handle connecting sleeve 23.

[0027] For example, syringe 1 can be a common disposable plastic syringe 1, the tubing 21 of infusion needle 2 can be a transparent medical plastic tubing 21, the needle tip 22 is made of stainless steel, and the needle cap 3 is usually also made of plastic.

[0028] Wrap and knot any part of the tubing 21. The purpose of this is to prevent the medication from leaking from the needle 22 when the infusion needle 2 is not in use. For example, the wrapping and knotting can be done near the needle 22 to ensure that the medication will not leak from the needle 22 even if it is subjected to external pressure during transportation or storage.

[0029] The needle cap 3 has a limiting part 31. The needle cap 3 is detachably installed on the head of the infusion needle 2, and the limiting part 31 allows the needle handle connecting sleeve 23 to abut against the needle plug 11 along its axial direction. When the needle cap 3 is installed, the limiting part 31 on the needle cap 3 allows the needle handle connecting sleeve 23 to abut against the needle plug 11 along its axial direction, thereby preventing leakage of medication from the connection between the infusion needle 2 and the syringe 1. In some practical applications, the needle cap 3 has a perforation 32 on the side away from its open end, and the tubing 21 is at least partially located in the perforation 32. The portion of the needle cap 3 located beside the perforation 32 is the limiting part 31.

[0030] In this embodiment, during the intravenous transport of chemotherapy drugs, drug spillage could previously occur due to the needle cap detaching, leading to drug waste. This device, through its knotted tubing 21 and restrictive design of the needle cap 3, significantly reduces the risk of drug spillage, thereby minimizing waste. For example, in the process of transporting chemotherapy drugs from a hospital pharmacy to various departments, using this device ensures safe delivery and avoids the loss of expensive chemotherapy drugs due to spillage. Furthermore, since most chemotherapy drugs are toxic and irritating, spillage could harm transport personnel, medical staff, and patients. This device effectively prevents drug extravasation, reducing the risk of personnel coming into contact with chemotherapy drugs. For example, if drug spillage occurs during transport, it could cause skin contact with transport personnel, leading to adverse reactions such as allergies and swelling. Using this device reduces this risk and protects the health of personnel.

[0031] Chemotherapy drug spills not only harm human health but can also pollute the environment. This device is designed to prevent accidental drug leakage into the environment, reducing pollution to air and water sources. For example, if chemotherapy drugs leak onto hospital floors or into garbage cans, they may evaporate into the air or be discharged into the environment with wastewater, posing a potential threat to the ecosystem. Using this device can reduce the risk of such environmental pollution.

[0032] Furthermore, the device is relatively simple to operate; a good seal can be achieved simply by knotting the tubing 21 and installing the needle cap 3. This improves safety and convenience during operation, reducing psychological stress and operational difficulties caused by concerns about drug spillage. In practice, medical staff can quickly install the needle cap 3 and knot the tubing 21 when preparing chemotherapy drugs, ensuring the safety of the drugs during transportation and use. At the same time, this design also facilitates drug storage and management, improving work efficiency.

[0033] In some practical applications, refer to Figures 2 to 5 As shown, based on the connection method between the needle cap 3 and the syringe 1, at least the following implementation methods are available:

[0034] In one embodiment, the open end of the needle cap 3 is provided with a plurality of elastic arms 33 arranged in a ring. When the needle cap 3 is fitted onto the syringe 1, the plurality of elastic arms 33 elastically abut against the outer peripheral wall of the syringe 1, thereby applying a certain pressure to the surface of the syringe 1, thereby increasing the friction between the two and stabilizing the position of the needle cap 3 relative to the syringe 1 to a certain extent. Therefore, under the obstruction of the limiting part 31 of the needle cap 3, it can be ensured that the needle handle connecting sleeve 23 abuts against the needle plug 11 along its axial direction, thereby preventing leakage of medicine from the connection between the infusion needle 2 and the syringe 1.

[0035] In the second embodiment, at least two spring arms 33 are distributed in a ring at the open end of the needle cap 3. Unlike the first embodiment, in this embodiment, each spring arm 33 has a radially outwardly inclined pressure block 331 at its end. A rotating sleeve 4 is fitted around the outer periphery of the needle cap 3 and the two are threaded together. When the needle cap 3 is fitted onto the syringe 1, the rotating sleeve 4 rotates relative to the needle cap 3 and moves toward the direction of the spring arms 33 to squeeze the pressure blocks 331, causing the spring arms 33 to bend inward and press against the outer peripheral wall of the syringe 1. In this method, the spring arms 33 exert greater pressure on the surface of the syringe 1, thereby increasing the friction between the two and making the connection between the needle handle connecting sleeve 23 and the needle plug 11 more stable, thus preventing leakage.

[0036] Based on the second embodiment described above, the rotating sleeve 4 has an inner rounded corner at one end near the plurality of spring arms 33. When the rounded corner just contacts the pressure block 331, it can more smoothly fasten the pressure block 331 to the surface of the syringe 1.

[0037] Based on the second embodiment described above, the needle cap 3 is further provided with a limiting member 34. When the rotating sleeve 4 presses against several spring arms 33 against the syringe 1, at least one end of the rotating sleeve 4 abuts against the limiting member 34 to limit the axial movement of the rotating sleeve 4 and prevent the rotating sleeve 4 from rotating out of position and falling off the needle cap 3.

[0038] In some practical applications, based on any of the above embodiments, a rubber pad 35 is installed on the inner side of the opening end of the needle cap 3 to fit its inner wall. The rubber pad 35 has a certain elasticity and can be tightly attached to the surface of the syringe 1, thereby further increasing the friction between the needle cap 3 and the syringe 1, as well as the connection stability.

[0039] In some practical applications, refer to Figure 3 and Figure 4 As shown, based on any of the above embodiments, an annular protrusion 36 is provided on the inner wall of the side of the needle cap 3 away from its opening end, and the needle handle connecting sleeve 23 is embedded in the annular protrusion 36 to achieve its radial limitation, thereby stabilizing the position of the needle handle connecting sleeve 23.

[0040] In other practical applications, refer to Figure 2 , Figure 3 and Figure 5 As shown, the needle cap 3 is provided with a locking slot 37 that cuts into the perforation 32 and the annular protrusion 36 from its outer peripheral wall. The length direction of the locking slot 37 is adapted to the axial length of the needle cap 3. The thickness of the locking slot 37 is less than the diameter of the annular protrusion 36. The tubing 21 can enter the perforation 32 and the annular protrusion 36 through the locking slot 37. In this embodiment, it is mainly to facilitate the installation of the needle cap 3 at the connection between the syringe 1 and the infusion needle 2. The specific operation method is as follows: the operator inserts the needle cap 3 through the locking slot 37 into the middle of the tubing 21, and then pulls the tubing 21 so that the tubing 21 is placed in the perforation 32, and the needle handle connecting sleeve 23 is embedded in the annular protrusion 36. At the same time, the needle cap 3 is at least partially fitted on the syringe 1, completing the installation of the syringe 1 and the needle cap 3. If necessary, the rotating sleeve 4 can be used to make several spring arms 33 abut against the syringe 1 to complete the stable connection between the syringe 1 and the needle cap 3.

[0041] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A drug preparation spill prevention device, characterized in that, include: Syringe (1) with a needle plug (11); The infusion needle (2) consists of a tubing (21) and a needle (22) installed at one end of the tubing (21). The other end of the tubing (21) is fitted onto the needle plug (11) through a needle handle connecting sleeve (23). The tubing (21) is wrapped and knotted at any point. The needle cap (3) has a limiting part (31) which is detachably mounted on the head of the infusion needle (2) and the limiting part (31) allows the needle handle connecting sleeve (23) to abut against the needle plug (11) along its axial direction.

2. The drug preparation spill prevention device according to claim 1, characterized in that, The open end of the needle cap (3) is fitted onto the head of the syringe (1), and the needle cap (3) has a perforation (32) on the side away from its open end, and the tubing (21) is at least partially located in the perforation (32).

3. The drug preparation spill prevention device according to claim 2, characterized in that, The needle cap (3) has several spring arms (33) arranged in a ring at the open end. When the needle cap (3) is fitted onto the syringe (1), the several spring arms (33) elastically abut against the outer peripheral wall of the syringe (1).

4. A drug preparation spill prevention device according to claim 2, characterized in that, The needle cap (3) has at least two spring arms (33) distributed in a ring at the open end. Each spring arm (33) has a pressure block (331) that is tilted outward in a radial direction at the end. The outer periphery of the needle cap (3) is fitted with a rotating sleeve (4) and the two are threaded together. When the needle cap (3) is fitted onto the syringe (1), the rotating sleeve (4) rotates relative to the needle cap (3) and moves in the direction of several spring arms (33) to squeeze several pressure blocks (331), so that several spring arms (33) bend inward and press against the outer periphery of the syringe (1).

5. A drug preparation spill prevention device according to claim 4, characterized in that, The rotating sleeve (4) has an inner rounded corner at one end near one of the spring arms (33).

6. A drug preparation spill prevention device according to claim 4, characterized in that, The needle cap (3) is also provided with a limiting member (34). When the rotating sleeve (4) presses against several spring arms (33) against the syringe (1), at least one end of the rotating sleeve (4) abuts against the limiting member (34) to limit the axial movement of the rotating sleeve (4).

7. A drug preparation spill prevention device according to claim 3 or 4, characterized in that, The needle cap (3) has a rubber pad (35) fitted to its inner wall installed on the inner side of the opening end.

8. A drug preparation spill prevention device according to claim 2, characterized in that, The needle cap (3) has an annular protrusion (36) on the inner wall of the side away from its opening end, and the needle handle connecting sleeve (23) is embedded in the annular protrusion (36) to achieve its radial limitation.

9. A drug preparation spill prevention device according to claim 8, characterized in that, The needle cap (3) is provided with a slot (37) that cuts into the perforation (32) and the annular protrusion (36) from its outer peripheral wall, and the length direction of the slot (37) is adapted to the axial length of the needle cap (3). The thickness of the slot (37) is less than the diameter of the annular protrusion (36). The hose (21) can enter the perforation (32) and the annular protrusion (36) through the slot (37).

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