General injector for clinical intramuscular injection
By designing a syringe with a triangular support structure and threaded connection, the problem of inaccurate needle insertion depth control was solved, achieving stability and accuracy of the needle during injection, reducing injection difficulty and improving efficacy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-04-03
AI Technical Summary
Existing syringes make it difficult to accurately control the needle insertion depth, which can easily lead to the needle sinking into the skin or the injection site being misaligned, increasing the difficulty of clinical intramuscular injections and affecting the efficacy.
A universal intramuscular injection syringe for clinical use was designed. It adopts a triangular support structure, which ensures the needle insertion depth by abutting the skin at the bottom of the support. The support is adjustable and fixed by the threaded connection of the movable sleeve and the fixed sleeve, which prevents the needle from continuing to penetrate the skin during the injection process.
It effectively controls the depth of needle insertion, avoids injection misalignment, reduces the difficulty of clinical intramuscular injection, and ensures injection effectiveness.
Smart Images
Figure CN224070904U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of syringe technology, specifically a universal syringe for clinical intramuscular injection. Background Technology
[0002] During clinical intramuscular injections of the spine, two-thirds of the syringe needle needs to be inserted into the body before the injection is advanced. However, existing syringes make it difficult to check the insertion depth of the needle, and during the injection process after the needle has been inserted two-thirds of the way in, it is easy to push the needle further in, resulting in the needle disappearing into the skin and the injection site being skewed. This not only increases the difficulty of clinical intramuscular injections but also affects the effectiveness of the intramuscular injection. Utility Model Content
[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a universal intramuscular injection syringe that ensures the insertion depth of the needle, effectively prevents the needle from sinking further into the skin during injection, avoids injection misalignment, reduces the difficulty of clinical intramuscular injection, and guarantees the effectiveness of intramuscular injection.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A general-purpose intramuscular injection syringe for clinical use includes an injection sleeve, a needle disposed at one end of the injection sleeve, a piston slidably connected to the injection sleeve, a push rod with one end extending into the injection sleeve and connected to the piston, and a push head disposed at the end of the push rod. The syringe is characterized by: a fixed sleeve fixed to the injection sleeve, a movable sleeve detachably connected to the fixed sleeve, and three supports connected at one end to the movable sleeve. The three supports are arranged in a triangle, and when two-thirds of the needle is inserted into the human body, the bottom ends of the three supports abut against the human skin.
[0006] Furthermore, the movable sleeve is radially provided with three internal threaded holes, the openings of the internal threaded holes are inclined downwards, and the bracket is provided with an external thread directly opposite the internal threaded holes.
[0007] Furthermore, the bottom end of the bracket is provided with an abutment block, and the area of the bottom end of the abutment block is larger than the area of the bottom end of the bracket.
[0008] Furthermore, the bottom of the bracket is provided with a groove, and a rotating shaft is rotatably connected in the groove. A connecting block is provided on the rotating shaft, and the bottom end of the connecting block extends out of the groove and connects to the abutment block.
[0009] Furthermore, the fixed sleeve is provided with an external thread II, and the movable sleeve is provided with an internal threaded hole II for threading the external thread II.
[0010] Furthermore, the retaining sleeve is made of a transparent material.
[0011] The beneficial effects of this utility model are:
[0012] In practical applications, when the needle is inserted into the body, two-thirds of the needle is already inserted into the skin when the bottom of the support touches the skin, reaching the injection site. The plunger is then pushed to inject. The triangular support effectively prevents the needle from further penetrating the skin during injection, avoiding injection deviation and reducing the difficulty of clinical intramuscular injection. This invention not only ensures the needle insertion depth but also effectively prevents the needle from further penetrating the skin during injection, avoiding injection deviation, reducing the difficulty of clinical intramuscular injection, and ensuring the effectiveness of intramuscular injection. Attached Figure Description
[0013] Figure 1 This is a structural diagram of the disassembled version of this utility model;
[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;
[0016] Reference numerals: 1. Injection sleeve; 2. Needle; 3. Push rod; 4. Push head; 5. Fixed sleeve; 51. External thread II; 6. Movable sleeve; 61. Internal thread hole I; 62. Internal thread hole II; 7. Bracket; 70. External thread I; 71. Groove; 72. Rotating shaft; 73. Connecting block; 8. Abutment block. Detailed Implementation
[0017] like Figure 1 , Figure 2 and Figure 3 As shown, a general-purpose intramuscular injection syringe for clinical use includes an injection sleeve 1, a needle 2 disposed at one end of the injection sleeve 1, a piston slidably connected to the injection sleeve 1, a push rod 3 with one end extending into the injection sleeve 1 and connected to the piston, and a push head 4 disposed at the end of the push rod 3. The syringe is characterized by: a fixed sleeve 5 fixed to the injection sleeve 1, a movable sleeve 6 detachably connected to the fixed sleeve 5, and three supports 7 connected at one end to the movable sleeve 6. The three supports 7 are arranged in a triangle, and when two-thirds of the needle 2 is inserted into the human body, the bottom ends of the three supports 7 abut against the human skin.
[0018] In use, the needle 2 is inserted into the human body. When the bottom end of the support 7 touches the skin, two-thirds of the needle 2 has been inserted into the skin and reached the injection site. The pusher 4 is then pushed to inject. The triangular support 7 effectively prevents the needle 2 from continuing to penetrate the skin during the injection process, avoiding injection deviation and reducing the difficulty of clinical intramuscular injection. This invention not only ensures the insertion depth of the needle 2 but also effectively prevents the needle 2 from continuing to penetrate the skin during the injection process, avoiding injection deviation, reducing the difficulty of clinical intramuscular injection, and ensuring the effect of intramuscular injection.
[0019] like Figure 1 , Figure 2 and Figure 3 As shown, the movable sleeve 6 is radially provided with three internal threaded holes 61, the openings of the internal threaded holes 61 are inclined downwards, and the bracket 7 is provided with an external thread 70 opposite to the internal threaded holes 61; in this embodiment, the bracket 7 is installed on the movable sleeve 6 through the external thread 70 and the internal threaded holes 61, making the bracket 7 easier to store.
[0020] like Figure 1 , Figure 2 and Figure 3 As shown, the bottom end of the support 7 is provided with an abutment block 8, and the area of the bottom end of the abutment block 8 is larger than the area of the bottom end of the support 7. In this embodiment, the contact surface between the support 7 and the human skin is increased by the abutment block 8 to prevent the needle 2 from continuing to penetrate the skin during the injection process.
[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the bottom of the bracket 7 is provided with a groove 71, and a rotating shaft 72 is rotatably connected in the groove 71. A connecting block 73 is provided on the rotating shaft 72. The bottom end of the connecting block 73 extends out of the groove 71 and connects to the abutment block 8. In this embodiment, the angle of the abutment block 8 can be adjusted by the rotating shaft 72 and the connecting block 73 to make it suitable for intramuscular injection at different locations.
[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the fixed sleeve 5 is provided with an external thread 51, and the movable sleeve 6 is provided with an internal thread hole 62 for screwing the external thread 51. In this embodiment, the movable sleeve 6 is detachably connected to the fixed sleeve 5 by screwing the external thread 51 through the internal thread hole 62.
[0023] like Figure 1 , Figure 2 and Figure 3As shown, the fixing sleeve 5 is made of transparent material; in this embodiment, the fixing sleeve 5 made of transparent material will not block the scale on the injection sleeve 1.
[0024] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.
Claims
1. A general-purpose intramuscular injection syringe for clinical use, comprising an injection sleeve (1), a needle (2) disposed at one end of the injection sleeve (1), a piston slidably connected to the injection sleeve (1), a push rod (3) with one end extending into the injection sleeve (1) and connected to the piston, and a push head (4) disposed at the end of the push rod (3), characterized in that: The fixed sleeve (5) is fixed on the injection sleeve (1), the movable sleeve (6) is detachably connected to the fixed sleeve (5), three supports (7) are connected to one end of the movable sleeve (6), the three supports (7) are arranged in a triangular shape, and the bottom ends of the three supports (7) abut against the human skin when two-thirds of the needle (2) is inserted into the human body.
2. A universal intramuscular injection syringe according to claim 1, wherein, Three internally threaded holes (61) are arranged on the movable sleeve (6) in a radial direction, the openings of the internally threaded holes (61) are arranged in an inclined downward manner, and externally threaded holes (70) are arranged on the supports (7) opposite to the internally threaded holes (61).
3. The universal intramuscular injection syringe of claim 1, wherein, The bottom end of the support (7) is provided with an abutting block (8), and the area of the bottom end of the abutting block (8) is greater than that of the support (7).
4. A universal intramuscular injection syringe according to claim 3, wherein, The bottom of the support (7) is provided with a groove (71), a rotating shaft (72) is rotatably connected in the groove (71), the rotating shaft (72) is provided with a connecting block (73), and the bottom end of the connecting block (73) extends out of the groove (71) and connects the abutting block (8).
5. The universal intramuscular injection syringe of claim 1, wherein, The fixed sleeve (5) is provided with externally threaded holes (51), and the movable sleeve (6) is provided with internally threaded holes (62) for screwing the externally threaded holes (51).
6. A universal intramuscular syringe for clinical use according to claim 1, wherein The fixed sleeve (5) is made of transparent material.