Syringe with locking mechanism

Abstract

The utility model relates to the needle cylinder field especially, it relates to the needle cylinder with locking mechanism, including needle cylinder body, injection head and locking mechanism, the lower part of needle cylinder body is equipped with the injection needle of pricking into the patient's skin, the lower end center of needle cylinder body is equipped with injection head, the upper end of injection needle is equipped with the connecting head corresponding injection head, and the connecting head and injection head match and fit, and the upper end of injection needle and the lower end of needle cylinder body are surrounded and equipped with four sets of locking mechanism, the utility model discloses through needle cylinder body, injection head, injection needle and connecting head combination, so that when installing the injector, the connecting head of injection needle and the injection head of needle cylinder body can be matched and clamped together by the staff, after injection head and connecting head clamped together, four sets of locking mechanism lock and reinforce injection needle and needle cylinder body.

Description

Technical Field

[0001] This utility model relates to the field of syringes, and more particularly to syringes with a locking mechanism. Background Technology

[0002] The main body of a syringe is usually a syringe barrel and a piston. The syringe barrel is typically a hollow cylindrical tube used to hold the liquid medication to be injected. The piston is located inside the syringe barrel and can draw in and expel the liquid by pushing or pulling. The syringe is an important medical device with wide applications and important functions in medical practice.

[0003] Currently, commercially available syringes typically connect the needle tip to the syringe barrel via a tapered structure. However, this connection method can easily cause the needle to detach from the syringe barrel when the syringe is accidentally inserted into hard tissue, leaving the needle inside the tissue.

[0004] Therefore, to address the issue that when medical personnel remove the syringe, the injection needle may easily detach from the syringe barrel, leaving the needle inside the human tissue, a syringe barrel with a locking mechanism can be designed. By installing a locking mechanism at the connection between the syringe barrel and the injection needle, the connection between the injection needle and the syringe barrel can be strengthened, thereby facilitating the solution of the aforementioned problem. Utility Model Content

[0005] To overcome the problem that currently available syringes typically connect the needle tip to the lower end of the syringe via a gradually tapering conical structure, this connection method can easily lead to the needle detaching from the syringe and remaining inside the tissue when medical personnel remove the syringe if the needle is accidentally inserted into hard tissue.

[0006] The technical solution of this utility model is as follows: a syringe with a locking mechanism, including a syringe body, an injection head and a locking mechanism; an injection needle for piercing the patient's skin is provided at the bottom of the syringe body, an injection head is provided at the center of the lower end of the syringe body, a connector corresponding to the injection head is provided at the upper end of the injection needle, the connector and the injection head are matched and fitted together, and four sets of locking mechanisms are arranged around the upper end of the injection needle and the lower end of the syringe body.

[0007] Preferably, this application combines a syringe body, an injection head, an injection needle, and a connector, so that when installing the syringe, the operator can match and engage the connector of the injection needle with the injection head of the syringe body. After the injection head and the connector are engaged, four sets of locking mechanisms lock and reinforce the injection needle and the syringe body.

[0008] Preferably, the syringe body has a liquid medicine chamber inside, two sets of limiting blocks are symmetrically arranged on the upper outer side of the syringe body, an octagonal inner groove is arranged on the lower outer side of the syringe body, and a fixing block is provided at the lower end of the octagonal inner groove. There are four sets of fixing blocks, and the four sets of fixing blocks are arranged around the outer end of the octagonal inner groove.

[0009] Preferably, the lower end of the fixing block is provided with a sleeve on both sides, the center of the sleeve is provided with a movable hole, the center of the fixing block is provided with a positioning groove, and a buckle is installed on the upper part of the fixing block, with a locking slot inside the buckle.

[0010] Preferably, the outer end of the connector is surrounded by four sets of locking rings, and a locking hole is provided in the center of each locking ring.

[0011] Preferably, the locking mechanism includes a telescopic rod and a tension spring, with the outer end of the telescopic rod fitted with a tension spring and the tension spring having a damper inside.

[0012] Preferably, a primary connecting block is installed at the upper end of the telescopic rod, a primary rod is provided on the side of the primary connecting block away from the telescopic rod, and a movable shaft is provided at the end of the primary rod away from the primary block, with both ends of the movable shaft extending into the interior of the movable hole.

[0013] Preferably, a secondary connecting block is installed at the lower end of the telescopic rod, and a secondary rod is provided on the side of the secondary connecting block away from the telescopic rod. A lock with a corresponding locking hole is provided at the end of the secondary rod away from the secondary connecting block, and the locks are matched and engaged.

[0014] The beneficial effects of this utility model are as follows: Compared with the syringes currently on the market, which are prone to detaching from the syringe when medical personnel remove the syringe, leaving the syringe needle inside the human tissue, this application combines the syringe body, injection head, injection needle, and connector. This allows the operator to match and engage the connector of the injection needle with the injection head of the syringe body when installing the syringe. After the injection head and connector are engaged, the operator can rotate the movable shaft of the locking mechanism along the movable hole of the sleeve, thereby engaging the lock of the locking mechanism with the locking hole of the locking ring, thus locking and reinforcing the connection between the syringe body and the injection needle. This makes the connection between the injection needle and the syringe body more stable and secure, avoiding the problem of the injection needle getting stuck in the human hard tissue and being unable to be pulled out. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the overall structure of the syringe of this utility model.

[0016] Figure 2 The diagram shown is a schematic representation of the syringe body structure of this utility model.

[0017] Figure 3 The diagram shown is a partially enlarged structural schematic of part A of the syringe of this utility model;

[0018] Figure 4 The diagram shown is a schematic representation of the injection needle structure of the syringe of this utility model.

[0019] Figure 5 The diagram shown is a schematic representation of the locking mechanism of the syringe of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Syringe body; 2. Medication reservoir; 3. Limiting block; 4. Octagonal recessed groove; 5. Injection needle; 6. Locking mechanism; 7. Injection head; 8. Fixing block; 9. Sleeve; 10. Movable hole; 11. Positioning groove; 12. Buckle; 13. Bayonet; 14. Connector; 15. Locking ring; 601. Movable shaft; 602. Primary rod; 603. Primary connecting block; 604. Lock; 605. Secondary rod; 606. Secondary connecting block; 607. Telescopic rod; 608. Tension spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-5 This utility model provides an embodiment of a syringe with a locking mechanism, comprising a syringe body 1, an injection head 7, and a locking mechanism 6; an injection needle 5 for piercing the patient's skin is provided at the lower part of the syringe body 1, the injection head 7 is provided at the center of the lower end of the syringe body 1, and a connector 14 corresponding to the injection head 7 is provided at the upper end of the injection needle 5, the connector 14 and the injection head 7 are matched and fitted together, and four sets of locking mechanisms 6 are arranged around the upper end of the injection needle 5 and the lower end of the syringe body 1.

[0023] Please see Figures 1-3 In this embodiment, the syringe body 1 has a drug reservoir 2 inside. Two sets of limiting blocks 3 are symmetrically arranged on the outer side of the upper end of the syringe body 1. An octagonal recessed groove 4 is formed on the outer side of the lower end of the syringe body 1. A fixing block 8 is provided at the lower end of the octagonal recessed groove 4. Four sets of fixing blocks 8 are arranged around the outer end of the octagonal recessed groove 4. The combination of the drug reservoir 2 and the two sets of limiting blocks 3 allows the operator to insert the piston into the drug reservoir 2, hook the two sets of limiting blocks 3 with their middle and index fingers to press the piston and inject the drug, and then release the fixing block 8. Both sides of the lower end are provided with a sleeve 9. The center of the sleeve 9 is provided with a movable hole 10. The center of the fixing block 8 is provided with a positioning groove 11. A buckle 12 is installed on the top of the fixing block 8. The buckle 12 is provided with a slot 13 inside. By combining the sleeve 9 with the movable hole 10, after the injection needle 5 is separated from the syringe body 1, the medical staff can rotate the movable shaft 601 of the locking mechanism 6 along the movable hole 10 of the sleeve 9, thereby positioning the locking mechanism 6 on the octagonal inner groove 4 through the positioning groove 11 and fixing it through the slot 13 of the buckle 12.

[0024] Please see Figures 3-4 In this embodiment, four sets of locking rings 15 are arranged around the outer end of the connector 14. The locking ring 15 has a locking hole in the center. A secondary connecting block 606 is installed at the lower end of the telescopic rod 607. A secondary rod 605 is provided on the side of the secondary connecting block 606 away from the telescopic rod 607. A buckle 604 corresponding to the locking hole is provided at the end of the secondary rod 605 away from the secondary connecting block 606. The buckles 604 match and engage. By combining the locking rings 15 and the buckles 604, after the injection needle 5 is connected to the syringe body 1, the operator can rotate the movable shaft 601 of the locking mechanism 6 along the movable hole 10 of the sleeve 9, thereby engaging the buckle 604 of the locking mechanism 6 with the locking hole of the locking ring 15, and locking and reinforcing the connection between the syringe body 1 and the injection needle 5.

[0025] Please see Figures 3-5 In this embodiment, the locking mechanism 6 includes a telescopic rod 607 and a tension spring 608. The tension spring 608 is sleeved on the outer end of the telescopic rod 607. A damper is provided inside the tension spring 608. A primary connecting block 603 is installed on the upper end of the telescopic rod 607. A primary rod 602 is provided on the side of the primary connecting block 603 away from the telescopic rod 607. A movable shaft 601 is provided on the end of the primary rod 602 away from the primary block. Both ends of the movable shaft 601 extend into the interior of the movable hole 10. By combining the telescopic rod 607 and the tension spring 608, when locking the syringe body 1 and the injection needle 5, the operator pulls the buckle 604. The tension spring 608 provides a certain degree of elastic tension to the telescopic rod 607, so that the buckle 604 can engage with the locking ring 15 through the stretched space.

[0026] When working, the operator first matches and engages the connector 14 of the injection needle 5 with the injection head 7 of the syringe body 1. After the injection head 7 and connector 14 are engaged, the operator pulls the lock 604, and the tension spring 608 provides a certain degree of elastic tension to the telescopic rod 607.

[0027] Then, when the staff pulls the buckle 604, the staff can rotate the movable shaft 601 of the locking mechanism 6 along the movable hole 10 of the sleeve 9, thereby engaging the buckle 604 of the locking mechanism 6 with the locking hole of the locking ring 15, and locking and reinforcing the connection between the syringe body 1 and the injection needle 5.

[0028] After the injection needle 5 is separated from the syringe body 1, the medical staff can rotate the movable shaft 601 of the locking mechanism 6 along the movable hole 10 of the sleeve 9, thereby positioning the locking mechanism 6 on the octagonal inner groove 4 through the positioning groove 11 and fixing it through the buckle 13 of the buckle 12.

[0029] Through the above steps, this application combines the syringe body 1, injection head 7, injection needle 5, and connector 14, so that when installing the syringe, the operator can match and engage the connector 14 of the injection needle 5 with the injection head 7 of the syringe body 1. After the injection head 7 and connector 14 are engaged, the operator can rotate the movable shaft 601 of the locking mechanism 6 along the movable hole 10 of the sleeve 9, thereby engaging the latch 604 of the locking mechanism 6 with the locking hole of the locking ring 15, thus locking and reinforcing the connection between the syringe body 1 and the injection needle 5, making the connection between the injection needle 5 and the syringe body 1 more stable and secure, and avoiding the problem of the injection needle 5 being stuck in the hard tissue of the human body and unable to be pulled out.

Claims

1. A syringe with a locking mechanism, comprising a syringe body (1); characterized in that: It also includes a locking mechanism (6), an injection head (7) and a connector (14); an injection needle (5) for piercing the patient's skin is provided at the bottom of the syringe body (1), an injection head (7) is provided at the center of the lower end of the syringe body (1), a connector (14) corresponding to the injection head (7) is provided at the upper end of the injection needle (5), the connector (14) matches and fits with the injection head (7), and four sets of locking mechanisms (6) are arranged around the upper end of the injection needle (5) and the lower end of the syringe body (1).

2. The syringe with a locking mechanism according to claim 1, characterized in that: The syringe body (1) has a liquid reservoir (2) inside. Two sets of limiting blocks (3) are symmetrically arranged on the upper outer side of the syringe body (1). An octagonal inner groove (4) is opened on the lower outer side of the syringe body (1). A fixing block (8) is provided at the lower end of the octagonal inner groove (4). There are four sets of fixing blocks (8), and the four sets of fixing blocks (8) are arranged around the outer end of the octagonal inner groove (4).

3. The syringe with a locking mechanism according to claim 2, characterized in that: Both sides of the lower end of the fixing block (8) are provided with a sleeve (9), the center of the sleeve (9) is provided with a movable hole (10), the center of the fixing block (8) is provided with a positioning groove (11), and a buckle (12) is installed on the top of the fixing block (8), and a slot (13) is provided inside the buckle (12).

4. The syringe with a locking mechanism according to claim 1, characterized in that: The outer end of the connector (14) is surrounded by four sets of locking rings (15), and a locking hole is provided in the center of the locking ring (15).

5. The syringe with a locking mechanism according to claim 4, characterized in that: The locking mechanism (6) includes a telescopic rod (607) and a tension spring (608). The outer end of the telescopic rod (607) is fitted with a tension spring (608), and the tension spring (608) has a damper inside.

6. The syringe with a locking mechanism according to claim 5, characterized in that: A primary connecting block (603) is installed at the upper end of the telescopic rod (607). A primary rod (602) is provided on the side of the primary connecting block (603) away from the telescopic rod (607). A movable shaft (601) is provided at the end of the primary rod (602) away from the primary block. Both ends of the movable shaft (601) extend into the interior of the movable hole (10).

7. The syringe with a locking mechanism according to claim 6, characterized in that: A secondary connecting block (606) is installed at the lower end of the telescopic rod (607). A secondary rod (605) is provided on the side of the secondary connecting block (606) away from the telescopic rod (607). A lock (604) with a corresponding locking hole is provided at the end of the secondary rod (605) away from the secondary connecting block (606). The lock (604) matches and engages with the lock (605).

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