TWM624770U - Safe syringe capable of being used for needle-free dosing - Google Patents

Abstract

The safety syringe of this creation includes a needle holder, an adapter seat, a syringe and an outer sleeve. The adapter seat is arranged on the needle seat and has an elastic fin. The front end of the syringe is connected to the needle seat and the adapter seat, and the inner peripheral surface of the outer sleeve has a first annular rib and a second annular rib. The convex rib, when the outer sleeve is in the first position, the first annular convex rib of the outer sleeve clamps the elastic fin of the adapter seat, so that the needle seat protrudes from the front end of the outer sleeve, and can be used at this time. A push rod passing through the syringe is used to extract and apply the liquid medicine. When the outer sleeve is at the second position, the outer sleeve accommodates the needle seat and the adapter seat and can push through the second annular convex rib. Top the elastic fins of the adapter seat to remove the outer sleeve together with the needle seat and the adapter seat, and the syringe at this time can be used for needle-free dosing.

Description

Safe syringe for needle-free dosing

This creation is related to safety syringes, especially a safety syringe that can be used for needle-free dosing.

As far as the traditional safety syringe is concerned, after the injection is completed, the push rod and the needle seat are snapped together by a special structural design, so that the push rod can pull the needle seat together with the needle back into the syringe to avoid Health care workers or medical waste handlers are stabbed by used needles. However, after use, because the syringe and the needle cannot be further separated, the medical staff will discard the needle together with the syringe. Although the needle has been used, the structure of the syringe is usually intact, which will cause waste of materials. , and virtually increase the manufacturing cost.

The main purpose of this creation is to provide a safety syringe, which can be used with a needle-free drug dosing connector, so as to increase the convenience of use and reduce the waste of materials.

In order to achieve the above-mentioned main purpose, the safety syringe of the present invention includes a needle holder, an adapter seat, a syringe and an outer sleeve. The front end of the needle seat is used for fixing a needle, the rear end of the needle seat has a first shaft hole; the adapter seat has a second shaft hole passing through the front and rear ends, and the adapter seat uses the second shaft hole sleeved on the rear end of the needle seat, the second shaft hole of the adapter seat is coaxially connected to the first shaft hole of the needle seat, the outer peripheral surface of the adapter seat has an elastic fin; the syringe has a barrel body and a shaft portion, the shaft portion is integrally connected to the front end of the barrel, and the shaft portion of the syringe barrel is detachably penetrated through the first shaft hole of the needle holder and the second shaft hole of the adapter seat; The outer sleeve has a front opening and a rear opening, and the inner peripheral surface of the outer sleeve has a first annular rib adjacent to the front opening and a second annular rib adjacent to the rear opening An annular convex rib, the outer sleeve is sleeved on the syringe and can move along the axial direction of the syringe.

To extract the liquid medicine, first pull the outer sleeve backward to a first position. When the outer sleeve is at the first position, the first annular rib of the outer sleeve is clamped on the adapter The elastic fins of the seat allow the outer sleeve to be sleeved on the barrel of the syringe and allow the needle seat and the needle fixed to the needle seat to protrude from the front end opening of the outer sleeve. The needle is inserted into the medicine bottle, and a push rod passing through the syringe is used to draw the medicine into the syringe. After completing the extraction of the potion, there are two different ways to apply the potion. The first method is to push the push rod, so that the potion can be applied through the needle, and the second method is to use the coat The barrel is pushed forward to a second position, so that the outer sleeve accommodates the needle holder, the needle and the adapter seat, and then continuously pushes the outer sleeve, the outer sleeve will pass through the second The annular convex rib pushes against the elastic fins of the adapter seat, so that the outer sleeve together with the needle seat, the needle and the adapter seat are removed from the syringe, and the shaft of the syringe can now be removed. The part is inserted into the needle-free medicine dosing connector, and then the push rod is pushed to complete the application of the medicine.

As can be seen from the above, the safety syringe of the present invention can first pull the outer sleeve forward to the second position before extracting the liquid medicine, so as to protect the needle from stabbing others. When extracting the medicine, it is necessary to withdraw the outer sleeve to the first position to expose the needle, so as to facilitate the extraction of the medicine. After the extraction of the medicinal solution is completed, the needle or the needle-free dosing connector can be selected to apply the medicinal solution according to actual needs, so as to increase the convenience of use.

Preferably, the outer peripheral surface of the needle seat has an outer flange, the inner peripheral surface of the adapter seat has an inner flange, and the outer flange of the needle seat and the inner flange of the adapter seat interfere with each other to prevent The needle seat is prevented from being separated from the adapter seat from the top end of the second shaft hole.

Preferably, the outer peripheral surface of the barrel of the syringe has a longitudinal rib, and when the outer sleeve is at the first position, the second annular rib of the outer sleeve is pressed against the longitudinal direction of the syringe. Ribs to complete the positioning of the outer sleeve.

Preferably, the inner peripheral surface of the outer sleeve further has a third annular protruding rib, the third annular protruding rib is adjacent to the second annular protruding rib and is located between the first annular protruding rib and the Between the second annular rib, when the outer sleeve is at the second position, the elastic fin of the adapter is located between the second annular rib and the third annular rib, so that the The outer sleeve can be held in the second position to ensure that the needle is received within the outer sleeve.

Preferably, the inner diameter of the second annular rib is larger than the inner diameter of the first annular rib and the inner diameter of the third annular rib. Therefore, the user does not need to exert too much force on the outer sleeve to let the first annular rib or the third annular rib pass through the elastic fins of the adapter seat.

The detailed structure, features, assembly or usage of the safety syringe that can be used for needle-free dosing provided by the present creation will be described in the detailed description of the subsequent embodiments. However, those with ordinary knowledge in the field of creation should be able to understand that these detailed descriptions and the specific embodiments enumerated for implementing the creation are only used to illustrate the creation and are not intended to limit the scope of the patent application of the creation.

The applicant first explains that in the entire specification, including the embodiments described below and the claims of the scope of the patent application, the terms related to the directionality are based on the directions in the drawings. Next, in the embodiments and drawings to be introduced below, the same element numbers represent the same or similar elements or their structural features.

Please refer to FIGS. 1 and 2 , the safety syringe 10 of the present invention includes a needle holder 20 , an adapter seat 30 , a syringe 40 , a push rod 45 , and an outer sleeve 50 .

As shown in FIG. 2 , the front end of the needle holder 20 is used for fixing with the rear end of a needle 12 , the rear end of the needle holder 20 has a first shaft hole 22 , and the outer peripheral surface of the rear end of the needle holder 20 has an outer flange 24 .

As shown in FIGS. 3 and 4 , the adapter seat 30 has a large ring portion 31 , a small ring portion 32 connecting the large ring portion 31 , and a second shaft hole 33 penetrating the large ring portion 31 and the small ring portion 32 , There are three pairs of slit grooves 34 on the outer peripheral surface of the large ring portion 31 , an elastic fin 35 is formed between each pair of slit grooves 34 , and the three elastic fins 35 are arranged in an annular arrangement at equal intervals relative to the second shaft hole 33 , In addition, there is a baffle 36 protruding along the radial direction of the second shaft hole 33 on the inner peripheral surface of the large ring portion 31 . In addition, the inner peripheral surface of the small ring portion 32 has an inner flange 37 protruding along the radial direction of the second shaft hole 33 . As shown in FIG. 1 and FIG. 2 , the second shaft hole 33 of the adapter seat 30 is sleeved on the rear end of the needle seat 20 and the inner flange 37 and the outer flange 24 of the needle seat 20 interfere with each other, on the one hand through the baffle 36 The needle holder 20 is prevented from disengaging from the adapter seat 30 from the rear end of the second shaft hole 33 .

As shown in FIG. 2 , the syringe 40 has a barrel 41 , a shaft portion 42 and a support portion 43 . The shaft portion 42 is connected to the front end of the barrel 41 , and the support portion 43 is connected to the rear end of the barrel 41 . The outer peripheral surface of the rear end of 41 has a plurality of longitudinal ribs 44 (the number is not limited). As shown in FIG. 1 , the shaft portion 42 of the syringe 40 penetrates the first shaft hole 22 of the needle holder 20 and the second shaft hole 33 of the adapter seat 30 from the rear end of the adapter seat 30 .

As shown in FIG. 2 , the outer sleeve 50 has a front end opening 51 and a rear end opening 52 . The inner peripheral surface of the outer sleeve 50 has a first annular rib 53 adjacent to the front end opening 51 and a first annular rib 53 adjacent to the front end opening 51 . The second annular protruding rib 54 at the rear end opening 52 . As shown in FIG. 1 and FIG. 5 , the outer sleeve 50 is sleeved on the syringe 40 and can move along the axial direction of the syringe 40 . When the outer sleeve 50 moves backward until the first annular rib 53 touches When the elastic fins 35 of the adapter seat 30 are used, the elastic fins 35 of the adapter seat 30 will be elastically deformed to allow the first annular rib 53 to pass through without being stuck. When the sleeve 50 moves to the first position P1 as shown in FIG. 1 , the elastic fins 35 of the adapter seat 30 will return to their original state and are mutually clamped with the first annular rib 53 of the outer sleeve 50 , so that the The outer sleeve 50 is sleeved on the barrel 41 of the syringe 40 and allows the needle holder 20 and the needle 12 to protrude from the front end opening 51 of the outer sleeve 50, and the second annular rib 54 of the outer sleeve 50 is tightened The longitudinal ribs 44 on the syringe barrel 40 complete the positioning of the outer sleeve 50 . When the outer sleeve 50 moves forward until the third annular protruding rib 55 touches the elastic fins 35 of the adapter seat 30, the elastic fins 35 of the adapter seat 30 will elastically deform to allow The third annular rib 55 passes through without being stuck. When the outer sleeve 50 moves forward to the second position P2 as shown in FIG. The adapter seat 30 is accommodated inside, and the elastic fins 35 of the adapter seat 30 are located between the second annular rib 54 and the third annular rib 55 to complete the positioning of the outer sleeve 50 . In addition, when the outer sleeve 50 is located at the second position P2, if the outer sleeve 50 is continuously pushed forward, as shown in FIG. and the inner diameter of the third annular rib 55, the outer sleeve 50 pushes the elastic fins 35 of the adapter seat 30 through the second annular rib 54, so that the outer sleeve 50 together with the needle The hub 20 , the needle 12 and the adapter 30 are released from the syringe 40 together.

As can be seen from the above, the outer sleeve 50 can be pushed forward to the second position P2 as shown in FIG. 5 before the medicinal solution is drawn, so as to protect the needle 12 from stabbing others. To extract the medicinal solution, firstly pull the outer sleeve 50 backwards to the first position P1 as shown in FIG. 7 to expose the needle 12. At this time, the needle 12 can be inserted into the medicine bottle 14 and pulled through the The push rod 45 of the syringe 40 draws the liquid medicine into the syringe 40 . After the extraction of the liquid medicine is completed, if the liquid medicine is not to be applied immediately, the outer sleeve 50 can be pushed forward to the second position P2 as shown in FIG. 5 to protect the needle 12 from contamination, and even one extraction is possible. Several are kept for spare. When the medicine is ready to be applied, the outer sleeve 50 is moved back to the first position P1, and then the push rod 45 is pushed. As shown in FIG. 8, the medicine can be injected through the needle 12. cast, so it is quite convenient to use.

In addition to using the needle 12 , the present invention can be used with the needle-free medicated connector 16 . As shown in FIG. 9 , after the extraction of the liquid medicine is completed, the outer sleeve 50 is pushed forward to the second position P2 , and the outer sleeve 50 is pushed by continuous force, and the outer sleeve 50 will be pushed through the second annular convex rib 54 The elastic flaps 35 of the adapter seat 30 are pushed up, so that the outer sleeve 50 together with the needle holder 20, the needle 12 and the adapter seat 30 are removed from the syringe 40, and the shaft portion 42 of the syringe 40 can be removed at this time. It is inserted into the needle-free drug dosing connector 16 , as shown in FIG. 10 , and then pushes the push rod 45 to make the liquid medicine flow into the infusion tube 18 through the needle-free drug dosing connector 16 . Since the needle 12 has been removed in advance, the accidental situation of accidentally puncturing the infusion tube 18 when the needle 12 is inserted into the needle-free drug dosing connector 16 can be avoided.

To sum up, the safety syringe 10 of the present invention needs to pull the outer sleeve 50 to the first position P1 to expose the needle 12 to facilitate the extraction of the medicine. After the extraction of the medicine is completed, the needle 12 can be selected according to actual needs or a part of the components can be removed to cooperate with the needle-free medicine dosing connector 16 to apply the medicine, so as to increase the convenience of use. In other words, the safety syringe 10 of the present invention utilizes a separate design, so that the syringe 40 can be used with the needle 12 or the needle-free drug dosing connector 16 without the need for a separate mold, thereby reducing material waste and manufacturing costs.

10: Safety syringe 12: Needle 14: Medicine bottle 16: Needle-free dosing connector 18: Infusion tube 20: Needle holder 22: The first shaft hole 24: Outer Flange 30: Adapter 31: Big Ring Department 32: Small Ring Department 33: Second shaft hole 34: Cut the ditch 35: Elastic fins 36: Fence 37: Inner flange 40: Syringe 41: barrel 42: Shaft 43: Support part 44: Longitudinal ribs 45: Putter 50: Outer sleeve 51: Front opening 52: rear opening 53: The first annular rib 54: Second annular rib 55: The third annular rib P1: first position P2: Second position

FIG. 1 is a plane combined cross-sectional view of the safety syringe of the creation, mainly showing that the outer sleeve is in the first position. Figure 2 is an exploded sectional view of the safety syringe of the present invention. Figure 3 is a bottom view of the adapter provided by the safety syringe of this creation. FIG. 4 is a cross-sectional view of FIG. 3 taken along line 4-4. Fig. 5 is similar to Fig. 1, mainly showing that the outer sleeve is in the second position. Figure 6 is similar to Figure 5, but mainly showing the outer sleeve removed from the syringe along with the needle, needle holder and adapter. Fig. 7 is another plane combined cross-sectional view of the safety syringe of the creation, mainly showing the use of a needle to extract the liquid medicine. Fig. 8 is similar to Fig. 7, and mainly shows the application of the liquid medicine with a needle. FIG. 9 is another plane combined cross-sectional view of the safety syringe of the creation, mainly showing that after the extraction of the liquid medicine is completed, the outer sleeve together with the needle, the needle holder and the adapter seat are removed from the syringe. Fig. 10 is similar to Fig. 9, mainly showing that the shaft of the syringe is connected to the needle-free drug dosing joint.

12: Needle

20: Needle holder

24: Outer Flange

30: Adapter

31: Big Ring Department

32: Small Ring Department

33: Second shaft hole

35: Elastic fins

36: Fence

37: Inner flange

40: Syringe

41: barrel

42: Shaft

43: Support part

44: Longitudinal ribs

45: Putter

50: Outer sleeve

51: Front opening

52: rear opening

53: The first annular rib

54: Second annular rib

55: The third annular rib

Claims (5)

A safety syringe comprising: a needle holder, the rear end of the needle holder has a first shaft hole; an adapter seat with a second shaft hole running through the front and rear ends, the adapter seat is sleeved on the rear end of the needle base with the second shaft hole, and the second shaft hole of the adapter seat is coaxially communicated with the needle head the first shaft hole of the seat, and the outer peripheral surface of the adapter seat has an elastic fin; A syringe has a barrel body and a shaft portion, the shaft portion is integrally connected to the front end of the barrel body, and the shaft portion of the syringe barrel is detachably penetrated through the first shaft hole of the needle seat and the adapter seat the second shaft hole; and An outer sleeve with a front opening and a rear opening, the inner peripheral surface of the outer sleeve has a first annular rib adjacent to the front opening and a second annular rib adjacent to the rear opening an annular convex rib, the outer sleeve is sleeved on the syringe and can move between a first position and a second position along the axis of the syringe, when the outer sleeve is at the first position , the first annular rib of the outer sleeve is clamped on the elastic fin of the adapter seat, so that the outer sleeve is sleeved on the barrel of the syringe and allows the needle seat to protrude from the outer sleeve The front end is open, when the outer sleeve is at the second position, the outer sleeve accommodates the needle holder and the adapter seat and can push the elasticity of the adapter seat through the second annular rib A tab to disengage the outer sleeve from the syringe along with the needle seat and the adapter seat. The safety syringe as claimed in claim 1, wherein the outer peripheral surface of the needle seat has an outer flange, the inner peripheral surface of the adapter seat has an inner flange, and the outer flange of the needle seat is connected to the adapter The inner flanges of the seat interfere with each other. The safety syringe of claim 1, wherein the outer peripheral surface of the barrel of the syringe has a longitudinal protruding rib, and when the outer sleeve is at the first position, the second annular protrusion of the outer sleeve The ribs are pressed against the longitudinal ribs of the syringe barrel. The safety syringe according to any one of claims 1 to 3, wherein the inner peripheral surface of the outer sleeve further has a third annular rib, and the third annular rib is adjacent to the second The annular protruding rib is located between the first annular protruding rib and the second annular protruding rib. When the outer sleeve is in the second position, the elastic fin of the adapter seat is located in the second annular protruding rib. between the protruding rib and the third annular protruding rib. The safety syringe of claim 4, wherein the inner diameter of the second annular rib is greater than the inner diameter of the first annular rib and the inner diameter of the third annular rib.

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