Syringe convenient for single-hand pumpback

Abstract

The utility model discloses an injector convenient for single-hand pumpback, which belongs to the technical field of injectors and comprises a needle cylinder and a push rod, one end of the push rod is inserted into the needle cylinder, a needle cylinder circular truncated cone is arranged outside the needle cylinder, and two index finger and middle finger retaining rings are fixedly connected outside the needle cylinder circular truncated cone. When the disposable syringe is used, through the arrangement of the thumb retaining ring and the index finger and middle finger retaining ring, the situation that blood vessel embolism occurs due to the fact that blood vessel embolism is easily caused when the blood vessel is injected into a blood vessel due to invalid single-hand withdrawing can be prevented; and when the liquid medicine does not need to be injected temporarily after the liquid medicine is injected, the limiting piece is rotated to be clamped into the rack again to limit the push rod, so that the liquid medicine can be prevented from flowing out due to extrusion of the push rod, and the accuracy of the injection amount is prevented from being influenced. And the waste of liquid medicine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of syringes, in particular to a syringe which is convenient for single-handed withdrawal. Background Art

[0002] The syringe consists of a syringe, a needle plug and a needle. The needle plug is provided with a piston, which is inserted and pulled out of the syringe. The injection and absorption of the needle are achieved by the insertion and withdrawal of the needle plug. A pressure handle is provided at the end of the needle plug, and flanges are provided on both sides of the end of the syringe. When injecting, the index finger and middle finger of the human hand are against the flanges on both sides of the syringe, and the thumb presses the pressure handle on the needle plug; when absorbing, it must be operated with both hands, one hand holding the syringe and the other hand holding the pressure handle on the needle plug to complete the pulling. In some cases, the doctor needs to frequently perform the absorption and injection operations, and the other hand needs to do other operations at the same time. It is very inconvenient to use the traditional syringe operation. It is easy to cause vascular embolism when injecting into the blood vessel with one hand, which is not conducive to the safe use of the syringe. After preparing multiple syringes for absorption in advance, the syringes are prone to collision during the transfer process, so that the needle plug of the syringe is pushed to cause the liquid medicine to be squeezed out, affecting the accuracy of the injection amount and causing waste of liquid medicine. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, one purpose of the utility model is to provide a syringe that is easy to withdraw with one hand. The syringe that is easy to withdraw with one hand can prevent the situation where ineffective one-hand withdrawal easily causes vascular embolism due to injection into the blood vessel, and when withdrawing with one hand, the other hand can fix the injection site to reduce pain.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a syringe that is easy to withdraw with one hand, comprising a syringe and a push rod, one end of the push rod is inserted into the interior of the syringe, a syringe cone is provided on the outside of the syringe, two index finger and middle finger buckles are fixedly connected to the outside of the syringe cone, a push rod cone is provided on the other end of the push rod, a thumb buckle is fixedly connected to the push rod cone, a fixing rod is fixedly connected to the syringe cone, the outside of the fixing rod is rotatably connected to a limiting plate, the outside of the push rod is fixedly connected to a rack, a protective mechanism is installed on the bottom of the syringe, and a needle is connected to the bottom of the syringe.

[0006] Preferably, the rack is located on a side close to the fixing rod.

[0007] Preferably, the protection mechanism comprises a connecting cylinder, the connecting cylinder is integrally formed at the bottom of the syringe, and the internal thread of the connecting cylinder is connected to a protective cover.

[0008] Preferably, the diameter of the push rod is smaller than the diameter of the inner cavity of the syringe.

[0009] Preferably, the protective cover is sleeved on the outside of the needle.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] When the utility model is in use, by arranging the thumb buckle ring and the index and middle finger buckle rings, it can prevent the situation that invalid one-handed withdrawal is easy to cause vascular embolism due to injection into the blood vessel, and when withdrawing with one hand, the other hand can fix the injection site to reduce pain, and after the injection of the medicine, when the injection of the medicine is temporarily not needed, the limit plate can be rotated to re-engage the rack to limit the push rod, thereby preventing the push rod from being squeezed to cause the medicine to flow out, preventing the accuracy of the injection amount from being affected, and reducing the waste of the medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the syringe that is convenient for one-handed withdrawal according to the utility model;

[0013] Figure 2 It is a structural schematic diagram of the push rod truncated cone in the syringe that is convenient for one-handed withdrawal of the utility model;

[0014] Figure 3 The utility model is a schematic cross-sectional structure diagram of a syringe barrel in a syringe that is convenient for one-handed withdrawal.

[0015] In the figure: 1. syringe; 2. push rod; 3. thumb ring; 4. limit plate; 5. index finger and middle finger rings; 6. fixing rod; 7. rack; 8. protective cover; 9. push rod cone; 10. needle; 11. syringe cone; 12. connecting tube. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-Figure 3 An embodiment of the utility model provides a syringe that is convenient for one-handed withdrawal, comprising: a syringe 1 and a push rod 2.

[0018] Among them, one end of the push rod 2 is inserted into the interior of the syringe 1, and a syringe cone 11 is provided on the outside of the syringe 1. Two index finger and middle finger buckle rings 5 ​​are fixedly connected to the outside of the syringe cone 11. A push rod cone 9 is provided at the other end of the push rod 2. A thumb buckle 3 is fixedly connected to the push rod cone 9. A fixed rod 6 is fixedly connected to the syringe cone 11. The outside of the fixed rod 6 is rotatably connected to a limiting plate 4. The outside of the push rod 2 is fixedly connected to a rack 7. A protective mechanism is installed at the bottom of the syringe 1, and a needle 10 is connected to the bottom of the syringe 1.

[0019] When in use, the limiting piece 4 is rotated along the axis of the fixing rod 6 to make the limiting piece 4 slide out of the rack 7, thereby releasing the positioning restriction on the push rod 2, and then the thumb is inserted into the thumb buckle 3, and the index finger and the middle finger are respectively inserted into the two index finger and middle finger buckles 5, thereby completing the use of the syringe 1 and the push rod 2. The utility model can effectively withdraw the needle with one hand, preventing the situation that invalid withdrawal with one hand easily causes vascular embolism due to injection into the blood vessel, and the other hand can fix the injection site to reduce pain when withdrawing the needle with one hand.

[0020] When the injection of the drug solution is temporarily not needed after the injection, the limiting piece 4 is rotated to be re-engaged in the rack 7 to restrict the push rod 2, thereby preventing the push rod from being squeezed and causing the drug solution to flow out.

[0021] In order to protect the needle 10 , the protection mechanism includes a connecting tube 12 , which is integrally formed at the bottom of the syringe 1 , and the internal thread of the connecting tube 12 is connected to a protective cover 8 , which is sleeved on the outside of the needle 10 .

[0022] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when the utility model is in use, the limit plate 4 is rotated along the axis of the fixed rod 6 to make the limit plate 4 slide out of the rack 7, and the positioning restriction on the push rod 2 is released, and then the thumb is inserted into the thumb buckle 3, and the index finger and middle finger are respectively inserted into the two index finger and middle finger buckles 5, so as to complete the use of the syringe 1 and the push rod 2. The utility model can effectively withdraw with one hand to prevent the situation that invalid one-hand withdrawal is easy to cause vascular embolism due to injection into the blood vessel, and the other hand can fix the injection site to reduce pain when withdrawing with one hand. After the injection of the medicine, when the injection of the medicine is temporarily not needed, the limit plate 4 is rotated to be re-stuck in the rack 7 to restrict the push rod 2, thereby preventing the push rod from being squeezed and causing the medicine to flow out.

[0023] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A syringe that is easy to withdraw with one hand, comprising a syringe (1) and a push rod (2), characterized in that: One end of the push rod (2) is inserted into the interior of the syringe (1), and a syringe cone (11) is provided on the outside of the syringe (1). Two index finger and middle finger buckles (5) are fixedly connected to the outside of the syringe cone (11). The other end of the push rod (2) is provided with a push rod cone (9), and a thumb buckle (3) is fixedly connected to the push rod cone (9). A fixing rod (6) is fixedly connected to the syringe cone (11), and the outside of the fixing rod (6) is rotatably connected to a limiting plate (4). The outside of the push rod (2) is fixedly connected to a rack (7). A protective mechanism is installed at the bottom of the syringe (1), and the bottom of the syringe (1) is connected to a needle (10).

2. A syringe that facilitates one-handed withdrawal according to claim 1, characterized in that: The rack (7) is located on a side close to the fixing rod (6).

3. A syringe that facilitates one-handed withdrawal according to claim 1, characterized in that: The protection mechanism comprises a connecting tube (12), wherein the connecting tube (12) is integrally formed at the bottom of the syringe (1), and the internal thread of the connecting tube (12) is connected to a protection cover (8).

4. A syringe that facilitates one-handed withdrawal according to claim 1, characterized in that: The diameter of the push rod (2) is smaller than the diameter of the inner cavity of the syringe (1).

5. The syringe that is convenient for one-handed withdrawal according to claim 3, characterized in that: The protective cover (8) is sleeved on the outside of the needle (10).

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