TWM542479U - Safety syringe - Google Patents

Description

Safety syringe

The present invention relates to a syringe, and more particularly to a safety syringe that is applied to the medical field and can improve the safety of medical personnel.

Traditionally, when using a known syringe for injection therapy, the following standard steps are required: (1) removing the needle sleeve of the syringe, and first taking the physiological saline salt in the empty needle state of the syringe. Water or glucose injection; (2) under the needle of the syringe, pad cotton or alcohol cotton, and discharge the air in the front part of the syringe; (3) the physiological saline in the syringe or Is the glucose injection into the drug canister to be diluted; (4) the needle sleeve of the syringe is returned to the sleeve, and the drug can is shaken to dilute and mix the drug; (5) the needle sleeve of the syringe is removed again, and The diluent in the drug can is withdrawn in the empty needle state of the syringe; (6) the diluent in the syringe is injected, and the syringe is returned to the sleeve.

However, there are still many improvements in the use of the syringe. For example, in the process of extracting physiological saline in step (1), in order to prevent multiple medical personnel from sharing the same can of physiological saline, the pathogen is cross-contaminated, so Often extra can open a can of unopened saline, but if it is not used up, the remaining physiological saline can only be abandoned due to health considerations, resulting in waste of medical resources. In addition, in the step of using the step (4) and the step (6), if the medical staff is slightly inadvertent or negligent during the operation, the needle of the syringe is easily injured by the needle, not only in operation. Invisible increases the psychological pressure of medical staff, and is more likely to cause disease transmission when puncture.

Accordingly, it is an object of the present invention to provide a safety syringe that overcomes at least one of the disadvantages of the prior art.

Thus, the novel safety syringe is adapted to accommodate a solution to be injected and includes a syringe unit, a pusher unit, and a needle unit. The syringe unit defines a storage space that extends axially and stores the solution and includes a needle in communication with the storage space. The pusher unit includes a piston axially movable within the storage space, and a push rod disposed through the syringe unit and coupled to the piston. The needle sleeve unit is detachably sleeved on the needle, and includes a cover covering the periphery of the needle, and an alcohol cotton plugged in the cover for the needle to be inserted, the cover An exhaust space is defined in front of the alcohol cotton for containing the solution ejected from the needle.

The utility model has the advantages that the needle sleeve unit can directly perform the exhausting and disinfecting process before use in the cover, and the operation is more sanitary and convenient, and each of the safety syringes pre-accommodates the safety syringe before use. Solution, in addition to reducing the pollution caused by the traditional sharing of the same bottle of medical staff, can also reduce the waste of medical resources.

Referring to Figures 1 and 2, a first embodiment of the present safety syringe is adapted to contain a solution 7 to be injected, which is a medically used liquid such as physiological saline or glucose injection. After the drug is diluted, it is injected into the human body together with the drug, or it is directly injected into the human body without being mixed with other drugs. The new safety syringe comprises a syringe unit 1, a pusher unit 2, and a needle sleeve unit 3.

The syringe unit 1 includes an axially extending outer cylinder 4, an inner cylinder 5 extending axially and movably extending into the outer cylinder 4, and an inner end of the inner cylinder 5 The needle 6 of the outer cylinder 4 protrudes outward. The inner cylinder 5 defines a storage space 51 for the solution 7 to be accommodated, and the outer cylinder 4 and the inner cylinder 5 are made of a light-permeable material, so that the user can view the solution 7 .

The outer cylinder 4 has a first outer end portion 41 and a second outer end portion 42 at opposite ends, and one is formed on the outer surface for correspondingly measuring the stock of the solution 7 in the storage space 51. a scale 43, and the outer cylinder 4 defines an inner cylinder space 44, and one of the first outer ends 41 extends axially toward the second outer end portion 42 and is connected by the outer cylinder space 44. To the outer needle catching groove 45. The needle receiving groove 45 has a needle receiving section 451 adjacent to the first outer end portion 41, a needle exiting section 452 adjacent to the second outer end portion 42, and a needle connecting section 451 and the needle discharging section The moving segment 453 of the segment 452. It should be noted that in other variations of the embodiment, the scale 43 may not be disposed on the outer surface of the outer cylinder 4, but instead is disposed on the outer surface of the inner cylinder 5, and may also be achieved. The effect of the stock of the solution 7 is indicated.

The first outer end portion 41 has a first outer opening 411 through which the inner cylinder 5 is passed. The second outer end portion 42 has a second outer end surface 421 and a second outer opening 422 extending through the center of the second outer end surface 421. In the first embodiment, the diameter of the second outer opening 422 is slightly larger than the diameter of the needle 6 and smaller than the diameter of the inner cylinder 5. It should be noted that, in actual implementation, the size of the second outer opening 422 is not limited to the first embodiment, and the maximum diameter of the second outer opening 422 may be as shown in FIG. An outer opening 411 has the same diameter.

The inner cylinder 5 is disposed in the first outer opening 411 and movably mounted in the outer cylinder space 44 of the outer cylinder 4 and has a first inner end portion 52 away from one end of the needle 6. a second inner end portion 53 opposite one end of the first inner end portion 52, and an adjustment block 54 projecting outwardly from the outer surface to the needle receiving groove 45. The first inner end 52 has a first inner opening 521. The adjusting block 54 is a cylindrical body and is movable between the needle receiving section 451 of the needle receiving groove 45, the moving section 453 and the needle exit section 452.

The needle 6 is connected to the second inner end portion 53 of the inner cylinder 5, and communicates with the storage space 51 of the inner cylinder 5, and can be in the inner cylinder space 44 along with the inner cylinder 5 Move to. The needle 6 has an injection end 61 located distally from one end of the second inner end portion 53 and projecting outwardly from the second outer opening 422 of the second outer end portion 42.

The pusher unit 2 includes a piston 21 axially movable in the storage space 51 of the inner cylinder 5, and a first inner opening 521 extending through the inner cylinder 5 and connected to the piston 21. Pusher 22.

The needle sleeve unit 3 is detachably sleeved on the needle 6 and includes a cover 31 covering the periphery of the needle 6, and a plug is disposed in the cover 31 for the needle 6 to pass through. Alcohol cotton 32. The cover 31 defines an exhaust space 311 located in front of the alcohol cotton 32 for containing the solution 7 ejected from the needle 6.

In this embodiment, the solution 7 has been previously stored in the storage space 51 of the inner cylinder 5 before use, and the design is for preventing the pollution problem caused when a plurality of medical personnel share the same bottle solution 7. It also reduces the waste of medical resources generated by opening the newly filled solution 7 to avoid the aforementioned pollution problems.

The inner cylinder 5 is switched between a needle exiting position and a needle receiving position as compared to the outer cylinder 4. In the needle-out position shown in FIG. 2, the inner cylinder 5 is located in the outer cylinder 4 together with the pusher unit 2, and the injection end 61 of the needle 6 protrudes outwardly from the second outer portion. The second outer opening 422 of the end portion 42 and the adjusting block 54 of the inner cylinder 5 are engaged with the needle exit portion 452 of the needle receiving groove 45. At this time, the cover 31 of the needle cover unit 3 covers the needle 6, and the injection end 61 of the needle 6 passes through the alcohol cotton 32 and is located in the exhaust space 311.

Referring to FIG. 3, in the present embodiment, when exhausting is performed before use, the medical staff can slightly push the push rod 22 of the pusher unit 2 and force the piston 21 to move toward the second inner end portion 53. At this time, a part of the solution 7 in the storage space 51 is pushed out, and the air originally located in the needle 6 is brought into the exhaust space 311 together. The venting process of the present embodiment is more convenient and sanitary than the conventional case in which the syringe is additionally padded with an alcohol cotton at the needle and then vented.

When the present invention is vented and is to be injected, the needle sleeve unit 3 only needs to be unplugged, and during the plucking process, the injection end 61 of the needle 6 is wiped by the alcohol cotton 32 to achieve the disinfecting effect. At this time, the medical staff can push the push rod 22 of the pusher unit 2 as shown in FIG. 4, and the piston 21 is continuously moved toward the second inner end portion 53. The solution 7 (see FIG. 3) in the storage space 51 is injected outward into the canister to be diluted by the pressure generated by the movement of the piston 21, or directly injected into the patient's body.

Referring to FIG. 5, when the needle is to be retracted after the injection is completed, the medical staff only needs to pull the adjustment block 54 and withdraw the adjustment block 54 from the needle exit portion 452 of the needle receiving groove 45. The segment 453 is moved and further moved to the pinion segment 451 to be positioned in abutment, and the inner cylinder 5 moves the needle 6 in a direction away from the second outer end portion 42, and finally the needle 6 is completely received. The outer cylindrical space 44 does not protrude from the second outer end surface 421 of the second outer end portion 42. At this time, the inner cylinder 5 is located at the needle-receiving position compared with the outer cylinder 4, and the medical staff can safely tidy up the safety syringe without being injured by the needle 6.

In addition, before the use of the embodiment, the solution 7 is previously stored in the storage space 51 of the inner cylinder 5, and the needle 6 is mounted on the second inner end portion 53 of the inner cylinder 5, The cover 31 of the needle cover unit 3 is also covered on the needle 6. After the exhausting process, the cover 31 of the needle cover unit 3 can be removed for use, and the inner cylinder is used after use. 5, the needle 6 is moved away from the second outer end portion 42, so that the needle 6 can be completely accommodated in the outer cylinder space 44, and the cover 31 need not be placed in the process, so as to avoid the sleeve. The cover 31 is at risk of needle sticking during the process.

Referring to FIG. 6, a second embodiment of the present invention has a configuration substantially the same as the first embodiment, with the difference that the adjustment block 54 is detachably mounted to the first inner end portion 52. In the second embodiment, the adjusting block 54 is connected to the outer surface of the first inner end portion 52 in a screwed manner, and the receiving groove 45 is a long groove closed at both ends. Therefore, when the second embodiment is installed, the adjustment block 54 is first loosened from the first inner end portion 52, and then the inner cylinder 5 is pushed by the first outer opening 411, and then the The adjustment block 54 passes through the needle catching groove 45 and is correspondingly locked back to the first inner end portion 52. Since the side of the needle receiving groove 45 adjacent to the first outer end portion 41 is closed, the inner cylinder body 5 can be prevented from sliding outwardly out of the outer cylinder space 44 of the outer cylinder body 4 (see FIG. 2). The situation happened.

In summary, the structure of the needle sleeve unit 3 of the safety syringe of the present invention allows the exhaust and disinfection process before use to be directly carried out in the cover 31, so that the medical staff can operate more hygienic and convenient, and Each of the safety syringes pre-accommodates the solution 7 before use, in addition to reducing the risk of contamination caused by the traditional combination of a bottle of solution 7 by a plurality of medical personnel, and also reducing the waste of medical resources, so it can be achieved. The purpose of this new type. In addition, by the design that the inner cylinder 5 of the syringe unit 1 can move in the outer cylinder 4, the needle 6 can be easily accommodated into the outer cylinder space 44 after use, thereby reducing the medical staff being The risk of needle stick injuries.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧Syringe unit
2‧‧‧Pushing unit
21‧‧‧Piston
22‧‧‧Putting
3‧‧‧ needle unit
31‧‧‧ Cover
311‧‧‧Exhaust space
32‧‧‧Alcohol cotton
4‧‧‧Outer cylinder
41‧‧‧First outer end
411‧‧‧ first external opening
42‧‧‧second outer end
421‧‧‧ second outer end face
422‧‧‧Second outer opening
43‧‧‧ scale
44‧‧‧Outer tube space
45‧‧‧ Needle
451‧‧‧ Needle segment
452‧‧‧needle section
453‧‧‧moving section
5‧‧‧ inner cylinder
51‧‧‧ storage space
52‧‧‧First inner end
521‧‧‧First opening
53‧‧‧second inner end
54‧‧‧Adjustment block
6‧‧‧ needle
61‧‧‧Injection end
7‧‧‧solution

BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will be apparent from the embodiments of the drawings, wherein: Figure 1 is a partial perspective exploded view illustrating a first embodiment of the present invention; Figure 2 is a partial cross-sectional view, It is to be noted that the first embodiment contains a solution, and an inner cylinder of the first embodiment is located at a needle exit position, and the needle sleeve unit of the first embodiment has not been removed; FIG. 3 is a A partial cross-sectional view showing that after the first embodiment is exhausted, a portion of the solution is injected from a storage space in the inner cylinder into an exhaust space of a set of covers; FIG. 4 is a partial cross-sectional view illustrating the first The embodiment is taken after the needle sleeve unit is removed, and the inner cylinder is located at the needle exiting position, and the solution has been injected. FIG. 5 is a partial cross-sectional view showing the first embodiment removing the needle sleeve unit. After that, the inner cylinder is in a state of a pinning position; and Fig. 6 is a partially exploded perspective view showing a second embodiment of the present invention.

1‧‧‧Syringe unit

2‧‧‧Pushing unit

21‧‧‧Piston

22‧‧‧Putting

3‧‧‧ needle unit

4‧‧‧Outer cylinder

41‧‧‧First outer end

45‧‧‧ Needle

451‧‧‧ Needle segment

452‧‧‧needle section

453‧‧‧moving section

5‧‧‧ inner cylinder

52‧‧‧First inner end

521‧‧‧First opening

411‧‧‧ first external opening

42‧‧‧second outer end

422‧‧‧Second outer opening

43‧‧‧ scale

53‧‧‧second inner end

54‧‧‧Adjustment block

6‧‧‧ needle

61‧‧‧Injection end

Claims (6)

A safety syringe adapted to contain a solution to be injected, and comprising: a syringe unit defining a storage space extending axially for storing the solution, the syringe unit including a communication space a pusher unit, comprising a piston axially movable in the storage space, and a push rod disposed on the syringe unit and connected to the piston; and a needle sleeve unit for pulling off the ground cover Provided on the needle, and comprising a cover covering the periphery of the needle, and an alcohol cotton plugged in the cover for the needle to be inserted, the cover defining a front of the alcohol cotton and An exhaust space for containing the solution ejected from the needle. The safety syringe of claim 1, wherein the syringe unit further comprises an axially extending outer cylinder, and an axially extending inner cylinder defining an inner cylinder a space having a first outer end located away from one end of the needle sleeve unit and a second outer end opposite one end of the first outer end, the first outer end having a push for the push a first outer opening of the rod unit through which the push rod is disposed, the second outer end portion has a second outer end surface through which the needle is inserted, the inner cylinder is movably mounted in the outer cylinder space, and is defined Out of the storage space, the inner cylinder has a first inner end portion away from one end of the needle, and a second inner end portion opposite to one end of the first inner end portion, the needle connecting the second inner end a portion of the inner cylinder that is displaced relative to the outer cylinder between a needle exiting position and a needle receiving position, wherein the needle protrudes from the second outer end surface when the needle exiting position, The needle is received in the outer cylinder space without protruding from the second outer end surface. The safety syringe of claim 2, wherein the outer cylinder further defines a needle receiving groove extending axially from the outer cylinder space to the outer side, the inner cylinder further having a protruding projection An adjusting block of the needle groove, the adjusting block is located at a side of the pin receiving groove adjacent to the second outer end portion, and the adjusting block is moved to the pinning groove adjacent to the pinning position One side of the first outer end. The safety syringe of claim 2, wherein the outer cylinder further has a scale disposed on the outer peripheral surface for correspondingly indicating the capacity of the solution in the storage space. The safety syringe of claim 3, wherein the adjustment block is detachably coupled to the first inner end. The safety syringe of claim 5, wherein the needle receiving groove is a long groove closed at both ends.