Airtight safe syringe with double elastic structure

Airtight safety syringe with double elastic structure

The present invention relates to a safety injection syringe with a double elastic structure, in particular, a safety injection syringe can be completely airtight when injecting, and can pierce the airtight piston after the injection to prevent the second. Secondary user.

In recent years, many medical personnel have been pinned, and deaths such as hepatitis and AIDS have emerged in an endless stream. Needle sticking and sharp object puncture are the most common occupational injuries of medical personnel. According to the survey, 98% of nursing staff will feel the potential. The danger is followed by physicians 70%. The wound caused by needle sticking is not large, but it is a fatal hazard, because the used syringe has the blood or body fluid of the patient, which is a contaminated device, if the health worker If it is injured again, it may be infected.

Needle sticking events occur most often in general wards, others include operating rooms, intensive care units, treatment rooms, and emergency rooms. If we look at the medical behavior, the action of the back sleeve is most likely to be injured by the syringe. The used syringe has not been placed in the collection box, and it is easy to stab the medical staff. The tube is heavily focused on avoiding the procedure of returning the cover to prevent the medical staff from contracting the needle at the time of work. The safety of the safety syringes generally used today is not good. It is easy to affect the airtightness of the safety syringe due to the difference in temperature during the transportation process and during use. That is to say, the general safety injection syringe is easily affected by the temperature, and the heat expansion and contraction phenomenon causes a difference in the material compression ratio of the syringe, and reduces the airtight effect of the safety injection syringe.

Today's syringes are disposable, that is, discarded immediately after use, but if you do not carefully handle the used syringes, the criminals will use the syringes for the sake of improper gains. When it is used, it will be unimaginable after it is caused.

Therefore, the present invention proposes a safety injection syringe with a double elastic structure for the above problems, which not only improves the shortcomings of the safety of the commonly used safety syringe, but also can be used in the injection of the safety syringe. After that, the airtight piston is punctured, so that the piston generates holes to avoid the disease infection caused by the unscrupulous use, so that the above problems can be solved.

The main purpose of the present invention is to provide a safety injection syringe with a double elastic structure, which is matched with the airtight elastic piece of the hollow sleeve by the body of the needle seat, so that the safety injection syringe can be used during injection. Affected by temperature, and completely airtight.

The second objective of the present invention is to provide a safety injection syringe with a double elastic structure, which can pierce the airtight piston to form a hole after the injection, so as to avoid the secondary repeated use.

Another object of the present invention is to provide a safety injection syringe with a double elastic structure which is capable of rotating the push rod after the injection to avoid secondary re-use.

In order to achieve the above purpose, the present invention has a double-elastic structure airtight safety injection syringe, which mainly comprises an injection syringe, a needle seat and a push rod, and a hollow sleeve is arranged at the top of the injection syringe. The upper and lower sides of the sleeve are respectively provided with an upper ring groove and a lower ring groove, and the upper ring groove and the lower ring groove are not in phase. A positioning elastic piece and an airtight elastic piece are respectively formed on the upper and lower positions of the inner side of the hollow sleeve, and the inner side wall of the upper end of the injection needle tube is further provided with at least one puncture body beside the hollow sleeve; the needle seat is disposed in the hollow sleeve Because the outer diameter of the lower end of one of the body of the needle seat is larger than the outer diameter of the upper end, the system can be completely airtight with the airtight elastic piece, and a needle seat is arranged on the upper side of the body, and the outer side wall of the needle seat is provided. The plurality of positioning vanes are positioned on the hollow sleeve by a positioning groove provided on the positioning vane being embedded in the positioning elastic piece.

The fixing rod is disposed above the push rod disposed in the injection syringe, and the fixing seat is provided with a cylinder. The cylindrical body has a slope. The upper end surface is provided with a plurality of hooks for hooking at the lower end of the needle holder body. One of the convex rings is provided, and the fixing sleeve is provided with a gas-tight piston, the airtight piston is provided with a perforation for the cylinder to pass through, and the push rod is provided with a notch above the push rod, so that the push rod is only used by the push rod The upper two opposite ends are connected to the fixed seat, so that when the injection syringe is used, the rotary push rod can be broken to avoid being used repeatedly.

In order to give your reviewers a better understanding and understanding of the structural features and the efficacies achieved, please refer to the best example diagrams and detailed explanations to illustrate:

Please refer to the first figure and the second figure, which are an exploded schematic view and a cross-sectional view of a preferred embodiment of the present invention; as shown in the drawing, the present invention includes an injection syringe 10 having a hollow body, and the injection syringe 10 The top of the hollow sleeve 12 is provided with an upper ring groove 14 and a lower ring groove 16 respectively, and the upper ring groove 14 and the lower ring groove 16 are not connected to each other, so that the hollow The inner side wall of the sleeve 12 is formed with a positioning elastic piece 18 and an airtight elastic piece 20 respectively. The inner side wall of the upper end of the injection needle tube 10 is provided with at least one puncture body 22 beside the hollow sleeve 12; the hollow sleeve 12 can be worn inside. A needle holder 30 is provided. The needle holder 30 includes a body 32. The outer diameter of the lower end of the body 32 is slightly larger than the outer diameter of the upper end, so that the body 32 can be in close contact with the airtight elastic piece 20 to form a good airtightness. The airtight elastic piece 20 has elasticity, so the present invention is not affected by temperature changes during use, and affects the airtightness of the injection syringe 10. The lower end of the body 32 is provided with a convex ring 34, and the upper part of the body 32 is provided with a needle holder. 40. The needle holder 40 is provided with an injection needle 42. The outer side wall of the needle holder 40 is provided with a plurality of positioning vanes 44. Each positioning vane 44 is provided with a positioning groove 46. When the needle holder 30 is worn, When the hollow sleeve 12 is disposed, the positioning groove 46 is embedded on the positioning elastic piece 18, and the needle holder 30 is fixed to the hollow sleeve 12, and each positioning vane 44 of the needle holder 40 is positioned in the positioning groove 46. An extraction groove 48 is provided on the upper side.

A push rod 50 is inserted into the injection syringe 10. The bottom of the push rod 50 is provided with an elliptical one against the ring 51. The push rod 50 is provided with a fixing seat 52 above the push rod 50. The recess 53 is connected to the fixing base 52 only by the opposite ends of the upper part. The outer side wall of the fixing base 52 is provided with an axial groove 54, and the fixing seat 52 is sleeved with a gas. The fixed piston 52 is matched with a plurality of fixing collars 72 provided on the inner surface of the airtight piston 70 by a plurality of fixing ring grooves 56 provided on the outer surface surface, so that the airtight piston 70 is sleeved on the fixing seat. 52, the airtight piston 70 is provided with a through hole 74 for a cylindrical body 60 provided in the fixing base 52. The upper end surface of the cylindrical body 60 has a slope, and the upper end surface is attached to the opposite sides. With claws 62 and 64, the hooks 62 and 64 are arranged in an opposite manner, and the hooks 62 on one side are higher in height than the hooks 64 on the other side.

Please refer to the third to ninth drawings together, which is a schematic cross-sectional view of a preferred embodiment of the present invention during operation; as shown in the third figure, the medicament bottle is pierced by the injection needle 42 before the injection is performed. The cap is pulled down and the pusher 50 is pulled down to draw the medicament 80 in the vial into the syringe 10. In order to prevent the needle 42 from piercing the cap of the vial, the needle tip of the needle 42 remains pierced. The slag body is sealed, and the residual slag body is injected into the human body when the human body is injected. Therefore, when the medicine 80 is extracted, the needle holder 30 must be removed and replaced with a new needle holder 30, and the replacement method is only The finger 82 needs to be pressed against the drawing groove 48 on the positioning vane 44 and pulled upward to remove the needle holder 30. Then, the new needle holder 30 is inserted into the hollow sleeve 12, and the positioning vane must be inserted during insertion. The positioning groove 46 on the 44 is embedded in the positioning elastic piece 18, so that the newly replaced needle holder 30 can be fixed to the hollow sleeve 12.

After the replacement of the new needle holder 30, as shown in the fourth figure, the push rod 50 must be pushed up to discharge the air in the injection syringe 10, because the outer diameter of the lower end of the body 32 is slightly larger than the outer diameter of the upper end, so that the body The 32 series can be in close contact with the airtight elastic piece 20 to constitute a good airtightness, so that the air in the injection cylinder 10 can be discharged through the injection needle 42 without causing leakage of the medicine 80, and then as shown in the fifth figure. The human body can be injected as shown, which pushes the push rod 50 up to inject the medicament 80 into the human body via the injection needle 42.

As shown in the sixth figure, the push rod 50 must be pushed up when the injection is performed until the puncture body 22 pierces the airtight piston 70 and the hooks 72, 74 are caught by the convex ring 34 when the airtight piston 70 is punctured. 22 pierced and formed a hole 76 (please Referring to the seventh figure), since the axial groove 54 is provided on the outer side wall of the fixing seat 52 (refer to the first figure), when the airtight piston 70 has the hole 76, the injection cylinder 10 will leak. It can not be used, by which the airtight piston 70 can be prevented from being repeatedly used twice; when the hooks 72, 74 are hooked to the convex ring 34, as shown in the seventh and eighth figures, the push rod 50 is oriented Pulling down the positioning groove 46 from the positioning elastic piece 18, and pulling the needle holder 30 into the injection syringe 10, and because the upper end surface of the cylinder 60 has a slope and the height difference between the claws 72 and 74 The needle holder 30 will be dumped on one side of the injection syringe 10, so that the injection needle 42 can be prevented from being exposed and the medical staff can be injured; even as shown in the ninth figure, the injection needle 42 can be poured onto the injection syringe 10. When one side is inside, the push rod 50 is pushed up to bend the injection needle 42 to further ensure the safety of the medical staff.

As shown in the tenth figure, the notch 53 provided above the pusher 50 of the present invention is such that the pusher 50 is connected to the fixed seat 52 only by the opposite ends of the upper side. Finally, after the above operation is completed, the push rod 50 only needs to be rotated, and the push rod 50 can be broken by the force of the rotation, so that the push rod 50 and the fixed seat 52 are separated, so that the second repeated use can be prevented.

In summary, the present invention has a double-elastic structure airtight safety injection syringe, which is fixed to the hollow sleeve 12 by the positioning elastic piece 18 and the positioning groove 46 on the positioning vane 44, and The air-tight elastic piece 20 is matched with the body 32, so that the injection syringe 10 has good airtightness. Since the air-tight elastic piece 70 has elasticity, the present invention is not affected by temperature changes and affects the airtightness of the injection syringe 10. In addition, when the injection is completed, the airtight piston 70 can be pierced by the puncture body 22 to form the hole 76, so that the airtight effect is lost to avoid being used repeatedly; in addition, after the injection is completed, , screwing putter 50 is separated from the fixed seat 52, so that it can be prevented from being used twice.

However, the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, the shape, structure, characteristics and spirit described in the scope of the patent application are equally changed. Modifications shall be included in the scope of the patent application of this creation.

<p>10. . . Syringe</p><p>12. . . Hollow casing</p><p>14. . . Upper ring groove</p><p>16. . . Lower ring groove</p><p>18. . . Positioning shrapnel</p><p>20. . . Airtight shrapnel</p><p>twenty two. . . Puncture body</p><p>30. . . Needle seat</p><p>32. . . Ontology</p><p>34. . . Convex ring</p><p>40. . . Needle holder</p><p>42. . . Injection needle</p><p>44. . . Positioning vane</p><p>46. . . Positioning groove</p><p>48. . . Pull groove</p><p>50. . . Putt</p><p>51. . . Ring</p><p>52. . . Fixed seat</p><p>53. . . gap</p><p>54. . . Trench</p><p>56. . . Fixed ring groove</p><p>60. . . Cylinder</p><p>62. . . Claw</p><p>64. . . Claw</p><p>70. . . Airtight piston</p><p>72. . . Fixed collar</p><p>74. . . perforation</p><p>76. . . Hole</p><p>80. . . Pharmacy</p><p>82. . . finger</p>

The first drawing is an exploded view of a preferred embodiment of the present invention; the second drawing is a schematic cross-sectional view of a preferred embodiment of the present invention; and the third to tenth drawings are a preferred embodiment of the present invention. Schematic diagram of the cross-sectional structure used in operation.