TWM471279U - Syringe (II) - Google Patents

Description

Syringe (2)

The present invention relates to a syringe (2), in particular to a syringe that effectively positions the adapter to avoid the accidental disconnection of the adapter.

There are many medical personnel and medical waste disposal personnel around the world. Due to improper handling of syringes, they are often stabbed by syringe needles, which can cause infections such as AIDS, hepatitis B, and tuberculosis (TB). According to statistics, the number of deaths caused by unsafe injections in the world is as high as 1.3 million, and the direct medical expenses are as high as several hundred million dollars. Unsafe injection refers to an unsafe injection method for injecting persons, medical personnel, and the public environment, that is, repeated use of disposable syringes, lack of aseptic operation, sharing of needles, and improper disposal of waste. In order to avoid the above-mentioned events, various types of safety syringes have appeared on the market, and the structure of the needle holder is placed in the neck of the cylinder, and the needle holder can be pulled into the barrel after use. Therefore, the creator has been researching for many years and finally provided a syringe design that is applied as a disposable, safe syringe that strives to provide a safe, disposable syringe under the minimum components of the syringe.

The purpose of this creation is to provide a syringe (2) that is designed to pass through the special components of the syringe and provide a safe return of the head with minimal components. Pull back the authenticity and effectively eliminate the possibility of repeated use.

The purpose of the present invention is to provide a syringe (2), which is designed to effectively limit the rotation of the adapter by the positioning structure design of the adapter and the syringe, so that the adapter is reliably positioned at the front end of the syringe to avoid operation. In case of carelessness, the adapter is detached.

In order to achieve the above object, the present invention provides a syringe (2) comprising: a syringe, a adapter and a push rod. The inner front end of the barrel is provided with an annular limiting portion, and the annular limiting portion has at least two limiting stops and at least two limiting card grooves, and the limiting buckles are supported by the limiting stops The block is formed by a block, and one side of each of the limit stops forms a guiding surface. The adapter is disposed at an inner front end of the syringe, and at least two latching positioning members are disposed around the adapter, and a guiding slope is disposed on one side of each of the latching positioning members, and the latching positioning members are disposed They are respectively received in the limit card gutters and are blocked by the limit stops to define the rotation of the adapter. The push rod is movably received inside the syringe, the front end of the push rod is moved and correspondingly abuts against the bottom end of the adapter, and the front end of the push rod is coupled to the bottom end of the adapter. When the adapter is installed at the front end of the barrel, the guiding surfaces are in contact with the guiding surfaces to guide the positioning members and the limiting members for positioning Stop.

2‧‧‧Syringe

20‧‧‧ front end

21‧‧‧Circular Limits

23‧‧‧Limit stop

230‧‧‧Guide

25‧‧‧Limited card trench

27‧‧‧Conical ring groove

28‧‧‧Lumping block

29‧‧‧ screw joint

3‧‧‧Adapter

31‧‧‧ convex parts

33‧‧ ‧ alcove

35‧‧‧Carton locating parts

350‧‧‧ guiding slope

36‧‧‧

37‧‧‧ring cone

38‧‧‧Cut hook

5‧‧‧Put

50‧‧‧ front end

52‧‧‧Piston

54‧‧‧Connecting column

56‧‧‧Snap groove

Figure 1 is an exploded perspective view of the creation syringe (2).

Figure 2 is a cross-sectional view (1) of the inventive syringe (2).

Figure 3 is a partial cross-sectional view of the inventive syringe (2).

Figure 4 is a perspective view of the adapter of the creation syringe (2).

Figure 5 is a perspective view of the syringe of the present syringe (2).

Figure 6 is a cross-sectional view (3) of the creation syringe (2) showing the fit of the push rod, the adapter and the syringe.

Fig. 6A is a partially enlarged view of Fig. 6, showing in detail the contact between the adapter and the inside of the barrel.

Figure 7A is a cross-sectional view of Figure 6 taken along the line 7-7.

Fig. 7B is a cross-sectional view showing another state of Fig. 7A.

Figure 8 shows the cooperation between the needle and the adapter and the syringe in the case of the creation syringe (2).

Fig. 9 is another case of Fig. 8 showing the cooperation between the needle and the adapter and the syringe after the push rod is pulled back.

Please refer to Figure 1 to Figure 7, which is the syringe (2) of this creation. The syringe system comprises: a syringe 2, a adapter 3 and a push rod 5.

As shown in FIG. 1 , FIG. 2 , FIG. 4 and FIG. 5 , in the present invention, the inner front end 20 of the syringe 2 is provided with an annular limiting portion 21 having at least two limiting positions. The retaining block 23 and the at least two limiting latching grooves 25 are formed by the limiting retaining blocks 23, and one of the limiting stops 23 forms a guiding surface. 230. In the specific implementation of the present invention, each of the guiding surfaces 230 is a V-shaped guiding surface. Referring to FIG. 7A and FIG. 7B, in the embodiment, the annular limiting portion 21 has four limiting stops 23 and four limiting card grooves 25, and the four limiting card grooves 25 are respectively The two limit stops 23 are formed to be blocked, and thus, the inner front end 20 of the syringe 2 provides the adapter 3 for effective positioning. Furthermore, the inner front end 20 of the barrel 2 further has a tapered annular groove 27 formed under the limiting card groove 25, and the tapered ring groove 27 is coupled thereto. The limit card groove 25 presents a stepped structure, as shown in Fig. 2, which exhibit different hierarchical configurations. The diameter of the tapered ring groove 27 is larger than the diameter of the limit card groove 25 to facilitate the effective positioning of the adapter 3.

In addition, the inner front end 20 of the barrel 2 has a bulging block 28 projecting from the lower edge of the tapered ring groove 27, and the bottom end of the adapter 3 is jammed by the ridge block 28. The adapter 3 is stably stuck to the inner front end 20 of the barrel 2. In addition, the inner front end 20 of the barrel 2 is provided with a screwing portion 29 for providing the needle (as shown in FIG. 8) to be screwed to the screw portion 29.

As shown in FIG. 4, FIG. 7A and FIG. 7B, the adapter 3 is mounted on the inner front end 20 of the barrel 2, and a two-clamping positioning member 35 is disposed around the adapter 3, and each of the latches is positioned. One side of the member 35 is provided with a guiding inclined surface 350; in the specific implementation of the present invention, each of the guiding inclined surfaces 350 presents a V-shaped guiding inclined surface. When the adapter 3 moves inside the barrel 2 and is disposed at the front end 20, the cassette positioning members 35 are respectively received in the limit card groove 25, and are received by the limit stops. The 23 stops, so that the rotation of the adapter 3 in the syringe 2 is limited. Furthermore, the adapter 3 extends upwardly from a projection 31 which provides a needle arrangement (as shown in Figure 8). In addition, the circumference of the adapter 3 further has a ring taper 37 formed under the latching member 35, and the ring taper 37 and the latching member 35 form a first step. The annular structure is designed such that when the adapter 3 is positioned inside the syringe 2, the ring cone 37 can be correspondingly attached to the tapered ring groove 27.

The present invention is characterized in that when the adapter 3 is mounted on the front end 20 of the barrel 2, the card is effectively guided by the mutual contact between the guiding surface 230 and each of the guiding surfaces 350. The positioning member 35 is positioned and blocked by the limiting stoppers 23; therefore, the latching positioning member 35 can be quickly attached to the limiting card groove 25 and the restricted position block 23 is stopped. Moreover, the direct collision when the latching positioning member 35 is in contact with the limiting stopper 23 is prevented, and the structural damage is prevented, so that the two are convenient for positioning. Effectively avoid falling off.

As shown in FIG. 2, FIG. 3 and FIG. 6, the outer diameter of the ring taper member 37 of the adapter 3 is larger than the outer diameter of the latching member 35, so that the adapter 3 is mounted on the syringe 2 The ring taper member 37 is closely attached to the tapered ring groove 27, and the latching positioning member 35 is correspondingly engaged with the limiting card groove 25. In this way, not only the rotation of the adapter 3 relative to the syringe 2 is limited, but the adapter 3 and the syringe 2 are stably positioned and matched, and no unnecessary components are required (for example, an O-ring, an oil seal) Under the seal or the seal), it can effectively prevent the outflow or leakage of the injection. Furthermore, the inner portion of the adapter 3 integrally extends with a hook portion 38. The hook portion 38 forms a tapered hook inwardly and upwardly. Further, the bottom end of the adapter 3 is also recessed to form a hook. The recess 33 and the bottom end of the adapter 3 are convexly provided with a resisting block 36.

The push rod 5 is movably received inside the syringe 2, the front end 50 of the push rod 5 is movable and correspondingly abuts against the bottom end of the adapter 3, and the front end of the push rod 5 is coupled to the adapter 3 bottom ends are connected. Specifically, the front end 50 of the push rod 5 is provided with a piston 52 and a connecting post 54 protruding from the piston 52. The piston 52 is movable and abuts against the bottom end of the adapter 3, the piston 52. Attached to the recess 33 of the adapter 3, the injection solution is effectively discharged to the convex member 31 of the adapter 3, so that the injection liquid is completely discharged to the needle (as shown in Fig. 8), and the connection is made. The post 54 can be received in the interior of the adapter 3 correspondingly, which facilitates the attachment of the connecting post 54 to the tapered hook of the hook portion 38. The connecting post 54 is provided with a latching recess 56. When the connecting post 54 is received in the adapter 3, the tapered hook of the latching portion 38 can be snap-fastened to the connecting post 54. Snap groove 56. In addition, a part of the surface of the piston 52 is also pressed by the abutment 36 of the adapter 3. (Figure 9)

As shown in FIGS. 6, 8, and 9, in use, the push rod 5 is pushed forward such that the front end 50 faces the inner front end 20 of the barrel 2, so that the piston 52 of the push rod 5 can be attached thereto. Adapter 3 bottom The concave chamber 33 at the end effectively discharges the injection liquid completely and performs the injection; at the same time, the connection post 54 is further accommodated inside the adapter 3, which is advantageous for the hook portion 38 of the adapter 3 to be more effective. The latching groove 56 of the connecting post 54 is latched to form a snapping action. After the injection liquid is discharged for injection, the push rod 5 is pulled back and the joint 3 and the needle (as shown in FIG. 9) can be pulled back together inside the barrel 2 to ensure the authenticity of the pullback; Since the abutting block 36 at the bottom end of the adapter 3 can be pressed against the piston surface of the push rod 5, the connecting piece 3 biases the adapter 3 with the needle (as shown in FIG. 9), so that the adapter and the needle stay at the needle. Inside the syringe, the syringe has a safe and hygienic effect, eliminating the possibility of repeated use.

In summary, the creation is simple design with a simple structure, that is, the structural design of the syringe and the adapter, through the annular limit of the syringe and the card groove, and the structural design of the adapter of the adapter. By mutually contacting the guiding surfaces and the guiding inclined surfaces, the positioning and stopping of the locking members and the limiting stops are effectively guided, so that the two can be quickly positioned to prevent the two from being quickly positioned. The problem of structural collision and damage during positioning avoids the disconnection of the adapter due to careless operation of the needle, and also prevents the outflow of the injection fluid, and has a safe and hygienic effect. Therefore, this creation not only reduces the number of components, but also ensures the authenticity when pulling back, and eliminates the possibility of repeated use.

In summary, the overall design, practicality and efficiency of this creation are indeed in line with the needs of industrial development, and the disclosure of structural creation is also an unprecedented innovative structure, so its "novelty" should be undoubtedly considered. Moreover, this creation can be more effective than the conventional structure. Therefore, it is also "progressive". It fully complies with the requirements of the application requirements for new patents in China's Patent Law. It is a patent application in accordance with the law. Review and give affirmation.

2‧‧‧Syringe

20‧‧‧ front end

21‧‧‧Circular Limits

29‧‧‧ screw joint

3‧‧‧Adapter

31‧‧‧ convex parts

35‧‧‧Carton locating parts

36‧‧‧

37‧‧‧ring cone

5‧‧‧Put

50‧‧‧ front end

52‧‧‧Piston

54‧‧‧Connecting column

56‧‧‧Snap groove

Claims (10)

A syringe (2) comprising: a syringe having an annular limiting portion at an inner front end thereof, the annular limiting portion having at least two limit stops and at least two limit card grooves, the limit cards The sulcus is formed by the blocking of the limiting block, and one of the limiting stops forms a guiding surface on one side; a Adapter is installed at the front end of the barrel, and the adapter is At least two locating members are disposed on the periphery of the locating member, and one of the locating members of each of the locating members is provided with a guiding slanting surface, and the locating members are respectively received in the limiting card sulcus and are subjected to the same The position stop is blocked to define the rotation of the adapter; and a push rod is movably received inside the syringe, and the front end of the push rod is moved and correspondingly abuts against the bottom end of the adapter. And the front end of the push rod is coupled to the bottom end of the adapter; thereby, when the adapter is installed at the front end of the barrel, the guiding surface is in contact with the guiding inclined surface, thereby guiding The latching members and the limit stops are positioned and blocked. The syringe (2) according to claim 1, wherein the inner front end of the syringe further has a tapered ring groove, and the limiting card groove has a stepped structure; wherein the diameter of the tapered ring groove It is larger than the diameter of the limit card groove. The syringe (2) according to claim 2, wherein the adapter has a ring-shaped cone around the adapter, and the card member is formed into a stepped structure, and the ring-shaped member is correspondingly attached to the taper. The ring groove is correspondingly attached to the limit card groove. The outer diameter of the taper member of the adapter is larger than the outer diameter of the latching member, so that when the adapter is installed inside the syringe, the taper member is closely attached to the taper The ring groove, and the latching positioning member is correspondingly engaged with the limit card groove. The syringe (2) according to claim 2, wherein the inner front end of the syringe further has a bulge protruding from the lower edge of the tapered ring groove, and the bottom end of the adapter is subjected to the ridge The block is snapped so that the adapter is snapped onto the inner front end of the barrel. The syringe (2) according to any one of claims 1 to 3, wherein the inside of the adapter integrally extends with a hook portion, and the hook portion forms a tapered hook inwardly and upwardly; The bottom end of the joint is recessed to form an alcove. The syringe (2) according to claim 5, wherein the front end of the push rod is provided with a piston and a connecting post protruding from the piston, the piston system moves and abuts against the bottom end of the adapter, the piston system Attached to the recess, the connecting post is received inside the adapter, and the connecting post is fixed to the tapered hook. The syringe (2) of claim 6, wherein the connecting post is provided with a snap groove, and when the connecting post is received inside the adapter, the tapered hook is fastened to the connecting post The snap groove. The syringe (2) of claim 1, wherein the adapter extends upwardly with a male member, the male member providing a needle setting. The syringe (2) of claim 8, wherein the inner front end of the syringe is provided with a screwing portion to provide the needle screwed to the screw portion. The syringe (2) according to claim 1, wherein each of the guiding surfaces is a V-shaped guiding surface, and each of the guiding surfaces is a V-shaped guiding surface.