WO2005105184A1

WO2005105184A1 - Disposable safety syringe

Info

Publication number: WO2005105184A1
Application number: PCT/CN2004/000433
Authority: WO
Inventors: Chang-Ming Yang; Chun-Mei Chou
Original assignee: Chang-Ming Yang; Chun-Mei Chou
Priority date: 2004-04-30
Filing date: 2004-04-30
Publication date: 2005-11-10
Also published as: CN1953776B; CN1953776A

Abstract

The invention relates to a disposable a safety syringe, which mainly includes a needle (1), a protective sleeve (2), and a barrel (3), the needle (1) is attached to the barrel (3) by a plug-connection portion (11), and on the outer edge of the plug-connection portion (11) is disposed a slide block (13) which consists of a basel (131), a guide-moved rod (132), and an upper stop portion (133), and at the outer edge of the protective sleeve (2) is disposed a sliding rail (21) in which is disposed a protruding point (211) near the front end and back end on one side or both side, and one or more resist-back block (212) is disposed behind the protruding point (211) of the sliding rail (21) near its back end, the protective sleeve (2) is covered on the outer edge of the needle (1), the needle (1), the needle (1) pass through the sliding rail (21) of the protective sleeve (2) by the guide-moved rod (132), and is pressed against the interior side wall face of the protective sleeve (2) by the base (131), and is pressed against the outer side wall face by the upper stop portion (133).

Description

Single-use safety syringes TECHNICAL FIELD

The present invention relates to a single-use safety syringe, and more particularly to a single-use safety syringe which is safe, easy to operate, and does not need to worry about being used by a person for secondary use. current technology

A commonly used syringe is composed of a needle and a needle cover, wherein the needle extends a number of patches on the side of the body, and an injection needle is inserted in the front end of the body, and the needle cover is cylindrical and the needle cover A receiving hole is formed at the bottom of the. When using this conventional syringe needle protection method and structure, the needle cap must first be removed from the needle and then inserted into the patient's injection section with the needle of the needle. After the conventional syringe is used, the needle cap must be put back on the needle, which is likely to cause stab wounds to the medical staff and cause infection.

It can be seen that the above conventional syringe still has many shortcomings, which is not a perfect design and needs to be improved. Summary of the invention

In view of the above problems, the main object of the present invention is to provide an easy-to-handle and safe disposable safety syringe.

A secondary object of the present invention is to provide a single-use safety syringe without the fear of being used by a person for secondary use.

To achieve the above object, the disposable safety syringe provided by the present invention includes an injection needle, an injection needle is inserted at the front end of a plug-in part of the injection needle, and a slider is provided at the outer edge of the plug-in part. The slider is composed of a base, a guide rod and an upper stop;

A protective cover is provided with a slide rail at the outer edge of the protective cover, and a bump is provided on one or both sides of the slide rail near the front end and the rear end, and the slide rail is near the rear end. There are one or more non-return stoppers behind

An injection cylinder, an injection needle is inserted at the front end of the injection cylinder; the injection needle is sleeved at the front end of the injection cylinder with a plugging part, and the protective sleeve is sleeved at the outer edge of the injection needle, wherein the The injection needle is passed through the slide rail of the protective sleeve with the guide rod, and is pressed against the inner wall surface of the protective sleeve with the base, and is pressed against the protective sleeve with the upper stop. Outside wall surface.

Because the above technical solution is adopted, the present invention has the advantages of easy operation, good safety, and no need to worry about being used for secondary use. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of the top surface of a single-use safety syringe of the present invention;

FIG. 2 is an exploded perspective view of the first embodiment of the single-use safety syringe of the present invention; FIG.

3 is an exploded perspective view of a second embodiment of the disposable safety syringe of the present invention;

4 is an exploded perspective view of a third embodiment of the disposable safety syringe of the present invention;

5 is a perspective external view of a fourth embodiment of a single-use safety syringe of the present invention;

6 is an exploded perspective view of a fifth embodiment of a disposable safety syringe of the present invention;

7 is an exploded perspective view of a sixth embodiment of a single-use safety syringe of the present invention;

8 is a perspective view of a seventh embodiment of the disposable safety syringe of the present invention;

FIG. 9 is a perspective view of an eighth embodiment of the disposable safety syringe of the present invention;

10 is an exploded perspective view of a ninth embodiment of a disposable safety syringe of the present invention;

FIG. 11 is an exploded perspective view of a tenth embodiment of the disposable safety syringe of the present invention;

FIG. 12 is an exploded perspective view of an eleventh embodiment of a one-time safety syringe of the present invention; FIG.

FIG. 13 is an exploded perspective view of a twelfth embodiment of the disposable safety syringe of the present invention;

14 is an exploded perspective view of a thirteenth embodiment of a one-time safety syringe of the present invention;

15 is an exploded perspective view of a fourteenth embodiment of a one-time safety syringe of the present invention;

16 is an exploded perspective view of a fifteenth embodiment of a one-time safety syringe of the present invention;

17 is an exploded perspective view of a sixteenth embodiment of a one-time safety syringe of the present invention;

18 is a perspective sectional view of a seventeenth embodiment of a one-time safety syringe of the present invention;

19 is an exploded perspective view of an eighteenth embodiment of a one-time safety syringe of the present invention;

20 is an exploded perspective view of a nineteenth embodiment of a disposable safety syringe of the present invention;

21 is an exploded perspective view of a twentieth embodiment of a one-time safety syringe of the present invention;

Fig. 22 An exploded perspective view of the twenty-first embodiment of the single-use safety syringe of the present invention

Figure 23 An exploded perspective view of the twenty-second embodiment of the single-use safety syringe of the present invention

Fig. 24 An exploded perspective view of the twenty-third embodiment of the single-use safety syringe of the present invention

Fig. 25 An exploded perspective view of the twenty-fourth embodiment of the single-use safety syringe of the present invention

Fig. 26 An exploded perspective view of the twenty-fifth embodiment of the single-use safety syringe of the present invention FIG. 27 is an exploded perspective view of the twenty-sixth embodiment of the single-use safety syringe of the present invention; FIG. 28 is a perspective view of the twenty-seventh embodiment of the single-use safety syringe of the present invention; An exploded perspective view of the embodiment; FIG. 30 is an exploded perspective view of the twenty-ninth embodiment of the single-use safety syringe of the present invention; FIG. 31 is a perspective external view of the thirtieth embodiment of the single-use safety syringe of the present invention;

32 is a perspective external view of the thirty-first embodiment of the single-use safety syringe of the present invention; FIG. 33 is an exploded perspective view of the thirty-second embodiment of the single-use safety syringe of the present invention; An exploded perspective view of the embodiment; FIG. 35 An exploded perspective view of the thirty-fourth embodiment of the one-time safety syringe of the present invention; FIG. 36 An exploded perspective view of the thirty-fifth embodiment of the one-time safety syringe of the present invention; A perspective exploded view of a thirty-sixth embodiment of a safety syringe; FIG. 38 is a perspective exploded view of a thirty-seventh embodiment of the safety syringe of the present invention;

Figure 39 is a perspective exploded view of the thirty-eighth embodiment of the single-use safety syringe of the present invention;

Figure 40 is a perspective exploded view of the thirty-ninth embodiment of the disposable safety syringe of the present invention;

FIG. 41 is an exploded perspective view of a fortieth embodiment of the single-use safety syringe of the present invention; FIG.

Figure 42 is a perspective exploded view of the forty-first embodiment of the one-time safety syringe of the present invention;

Figure 43 is a perspective exploded view of a forty-second embodiment of the safety syringe of the present invention;

Figure 44 is a perspective exploded view of the forty-third embodiment of the one-use safety syringe of the present invention;

Fig. 45 is an exploded perspective view of a forty-fourth embodiment of the single-use safety syringe of the present invention. Best Mode of the Invention

Please refer to the following detailed description of a preferred embodiment of the present invention and the accompanying drawings for further understanding of the technical content of the present invention and its effects.

As shown in FIG. 1, the disposable safety syringe provided by the present invention mainly includes: an injection needle 1, which is provided with an injection needle 12 at a front end of an insertion portion 11, and the insertion portion 11 A slider 13 is provided on the outer edge. The slider 13 includes a base 131, a guide rod 132, and an upper stop.

133.

A protective cover 2 is provided with a slide rail 21 on the outer edge of the protective cover 2. A bump 211 is provided on one or both sides of the slide rail 21 near the front end and the rear end, and the slide rail 21 is near the rear end of the bump 211. There are one or more non-return stoppers 212 at the rear.

An injection cylinder 3 has a front end for inserting the injection needle 1. The injection needle 1 is sleeved on the front end of the injection cylinder 3 with a plug-in portion 11, and a protective sleeve 2 is sleeved on the outer edge of the injection needle 1. The base 131 abuts against the inner side wall surface of the protective cover 2, and the upper blocking portion 133 abuts against the outer side wall surface of the protective cover 2. Before the one-time safety syringe provided by the present invention is used, the upper stop portion 133 of the slider 13 is fixed between the protruding point 211 near the rear end of the slide rail 21 on the protective cover 2 and the check block 212. When the single-use safety syringe provided by the present invention is to be used, it is only necessary to pull the protective cover 2 backward to disengage the upper stop portion 133 from the protrusion 211 near the rear end of the slide rail 21 and approach the protrusion at the front end through the slide rail 21. 211, the injection needle 12 is exposed from the front end of the protective cover 2, and the rear wall surface of the upper stop portion 133 of the slider 13 is blocked by the protrusion 211 of the slide rail 21 near the front end and cannot be backed out. 12 Insert into the patient's injection area for extraction or injection. After the extraction or injection is completed, the protective cover 2 only needs to be pushed forward, so that the upper block 133 can approach the convex point 211 provided at the front end through the slide rail 21, and the injection needle 12 is covered in the protective cover 2, and then Continue to push the protective cover 2 forward, so that the upper stop 133 of the slider 13 passes through the check stop 212 provided at the rear end of the slide rail 21, and the check stop 212 is stopped on the front wall surface of the upper stop 133. So that the protective cover 2 can no longer be moved backward, so that the single-use safety syringe provided by the present invention achieves the purpose of avoiding being used twice. In addition, the convex point 211 and the check block 212 provided on the outer edge of the protective cover 2 may also be provided on the inner wall surface of the slide rail 21 to block the guide rod 132 of the slider 13. The bumps 211 and the check blocks 212 provided on the outer edge of the protective sleeve 2 can also be provided on the inner side wall surface of the protective sleeve 2 to block the base 131 of the slider 13.

As shown in FIG. 2, the outer edge of the protective sleeve 2 of the disposable safety syringe provided by the present invention may not be provided with a bump 211 and a check block 212, but an opening 213 is recessed downward at the end of the slide rail 21. In addition, one or more convex points 211 are convexly arranged at the contact point between the slide rail 21 and the opening 213, and the bottom end of the upper stop 133 of the injection needle 1 is provided with a convex block 134 that can be accommodated in the opening 213. Prior to use of the disposable safety syringe provided by the present invention, the bottom of the projection 134 of the upper stop 133 abuts against the outer edge of the protective cover 2, and the rear side wall surface of the projection 134 is pressed against the front end of the projection 211. When using the disposable safety syringe provided by the present invention, it is only necessary to press the front end of the upper stop portion 133, and the guide rod 132 serves as a lever to pull the projection 134 at the bottom of the rear end of the upper stop portion 133 upward. Pull the protective cover 2 backward to expose the injection needle 12 from the front end of the protective cover 2 to perform the extraction or injection operation. After the extraction or injection operation is completed, press the front end of the upper stopper 133 again, and the guide rod 132 As a lever, the convex block 134 at the bottom of the rear end of the upper block 133 is pulled upward, and the protective cover 2 is pushed forward, so that the convex block 134 of the upper block 133 passes through the bump 211 and is received in the opening at the rear end of the protective cover 2 Within 213. At this time, even if the front end of the upper blocking portion 133 is pressed again, the bump 134 cannot be released from the opening 213, and the purpose of avoiding secondary use by the person is achieved.

As shown in FIG. 3, in the disposable safety syringe provided by the present invention, the slide rail 21 of the protective cover 2 The convex point 211 may not be provided near the front end, but a tapered clamping portion 214 may be formed at the front end of the slide rail 21. When the protective cover 2 is pushed backwards for the extraction or injection operation, the two side surfaces of the guide rod 132 can be held by the clamping portion 214 to fix the protective cover 2 to the rear end of the injection needle 1 to avoid the protective cover. 2 Move forward to prevent injection or extraction.

As shown in FIG. 4, in the single-use safety syringe provided by the present invention, in addition to retaining the position of the front end covering the tip of the injection needle 12, the protective sleeve 2 can also be replaced by a sheet or a semicircular shape to avoid blocking. The scale on the syringe is used to prevent the occurrence of extraction or injection of overdose or underdose when taking quantitative samples or injecting quantitative drugs.

As shown in FIG. 5, in the disposable safety syringe provided by the present invention, the sliding rail 21 may not be provided with a convex point 211 near the rear end, and the upper block 133 and the protective cover 2 are directly connected by the connecting member 4. Therefore, when the single-use safety syringe provided by the present invention is to be used, the protective sleeve 2 can be pushed backward only by tearing the connecting member 4 to perform the action of extraction or injection. In addition, the connecting member 4 may be replaced by glue, other adhesive components, or other bonding methods.

As shown in FIGS. 6 and 7, in the disposable safety syringe provided by the present invention, the protective sleeve 2 may also be provided with a screw-in groove 215 on the rear side of the check block 212 at the end of the slide rail 21, and A plurality of check blocks 212 are provided at a position where the screw-in groove 215 is in contact with the slide rail 21. Therefore, after the extraction or injection is completed, the protective cover 2 can be pushed forward to the forefront of the injection needle 1, and then the protective cover 2 is rotated, so that the guide rod 132 of the slider 13 is accommodated in the screwing groove 215. Because of the stop of the check block 212, the guide rod 132 can no longer be disengaged from the screwing groove 215, so that the single-use safety syringe provided by the present invention can not be used again. In addition, the bump 21 may not be provided near the front end of the slide rail 21, and a screw-in groove 215 is also provided on one side of the front end of the slide rail 21. Therefore, when the protective cover 2 is pulled backwards before extraction or injection, the protective cover 2 can be rotated to place the guide rod 132 into the screwing groove 215 to prevent the protective cover 2 from moving forward and preventing the injection or extraction. Action, and after the injection or extraction is completed, the protective sleeve 2 only needs to be rotated again to disengage the guide rod 132 from the screwing groove 215, and the protective sleeve 2 can be pushed forward.

As shown in FIG. 8 and FIG. 9, in the disposable safety syringe provided by the present invention, the protective sleeve 2 is not provided with a check block 212 at the rear end of the slide rail 21, but extends upward on the side of the end of the slide rail 21. The convex block 22 is provided with a buckle hole 221 on the convex block 22, and a convex buckle 135 is provided at the position of the upper blocking portion 133 corresponding to the buckle hole 221 of the convex block 22. Therefore, after the single-use safety syringe of the present invention is used for extraction or injection, the convex buckle 135 and the button hole 221 only need to be engaged with each other, so that the present invention can achieve the purpose of avoiding secondary use by humans. In addition, the buckle holes 221 on the bumps 22 can be replaced with the buckles 135 provided on the upper blocking portion 133. In addition, the bump 22 may also be provided at a position close to the end of the slide rail 21, and the buckle 22 is not provided on the bump 22, and The convex buckle 135 provided on the stopper 133 is replaced by a non-return stopper 212. Therefore, when the protective cover 2 is pushed forward after the extraction or injection is completed, the upper stopper 133 is retracted to the rear of the protrusion 22. The non-return stop block 212 is blocked on the rear side wall surface of the bump 22, so that the protective cover 2 cannot be pulled back again, so as to avoid being used again by a person, and the non-return stop block 212 on the upper block 133 may also be used. It is disposed on the bump 22.

As shown in FIG. 10, in the single-use safety syringe provided by the present invention, the backstop block 212 may not be provided behind the slide rail 21, and a bottom end of the upper stopper portion 133 may extend downwardly and may be hooked to a protective sleeve. 2 Hook 136 on the inside wall of the rear end. Therefore, when the disposable safety syringe provided by the present invention is used up and the protective sleeve 2 is pushed forward to the foremost end of the injection needle 1, the hook 136 passes through the rear edge of the protective sleeve 2 and is hooked on the inner side of the rear end of the protective sleeve 2. The wall surface prevents the protective cover 2 from being pulled back again.

As shown in FIG. 11, in the disposable safety syringe provided by the present invention, one or both sides of the upper stop portion 133 extend downward through a hook 137, and the slide rail 21 of the protective cover 2 is close to the front end and close to the rear end. A plurality of grooves 216 are provided on one or both sides, and a perforation 217 is provided on one or both sides of the end of the slide rail 21 of the protective cover 2. Before using the safety syringe provided by the present invention, the through hook 137 is placed in the groove 216 near the rear end of the slide rail 21 for positioning, and when in use, the protective sleeve 2 is pulled backward to separate the through hook 137 from the slide rail. 21 is close to the groove 216 at the rear end and is inserted into the groove 216 of the slide rail 21 near the front end to avoid the protective cover 2 moving forward when extraction or injection is performed, which causes difficulty in extraction or injection. After the extraction or injection is completed, the protective sleeve 2 only needs to be pushed forward so that the piercing hook 137 falls into the perforation 217 at the end of the slide rail 21, so that the protective sleeve 2 can no longer be moved backwards, so as to avoid being twice Purpose of use.

As shown in FIG. 12, in the disposable safety syringe provided by the present invention, the projection 21 may not be provided at the position close to the front end of the slide rail 21, and a concave buckle 23 is provided on the protective sleeve 2 at the front end of the slide rail 21. A convex buckle 138 is provided on the bottom edge of the front end of the upper blocking portion 133. When the protective cover 2 is pulled backwards for extraction or injection, the convex buckle 138 of the upper blocking portion 133 and the female buckle 23 of the protective cover 2 are engaged with each other, thereby avoiding displacement of the protective cover 2 and causing injection or extraction. Difficulties. In addition, the male buckle 138 of the upper blocking portion 133 and the female buckle 23 of the protective cover 2 may be interchanged with each other.

As shown in FIG. 13, in the disposable safety syringe provided by the present invention, the protrusion 21 may not be provided at the position close to the front end of the slide rail 21, and a protrusion 139 is provided at the bottom edge of the front end of the upper stop 133, and The front and rear ends of the convex portion 139 are inclined. When the protective cover 2 is pulled back to perform the extraction or injection operation, the convex portion 139 will disengage the convex portion 139 from the slide rail 21 and move to the front edge of the protective cover 2 through the inclined surface of the front end, so that the injection or extraction is performed. At this time, the convex portion 139 is blocked on the front wall surface of the protective cover 2 to prevent the protective cover 2 from being displaced. However, after the extraction or injection is completed, the protective sleeve 2 only needs to be pushed forward. At this time, the convex portion 139 can escape from the front wall surface of the protective sleeve 2 and re-enter the slide rail 21 through the rear inclined surface. As shown in FIG. 14, in the single-use safety syringe provided by the present invention, in addition to retaining the position of the front end covering the tip of the injection needle 12, the protective sleeve 2 is replaced by the sheet body 24 on the rear side, and the syringe 3 A concave portion 31 is provided corresponding to the sheet shape on the rear side of the protective cover 2, so when the protective cover 2 is pushed backward, the sheet body 24 on the rear side of the protective cover 2 is inserted into the concave portion 31 of the syringe.

As shown in FIG. 15, in the single-use safety syringe provided by the present invention, in addition to retaining the position of the foremost end covering the injection needle 12, the protective sleeve 2 is replaced by the sheet body 24 on the rear side, and the protrusions 211 and The non-return stop block 212 is disposed on the inner wall surface of the slide rail 21, and the upper portion 133 is not provided on the slider 13. The outer edge of the injection cylinder 3 is convexly provided with a protective sheet 2 on the rear side 24.入的包部 32。 Into the coating portion 32.

As shown in FIG. 16, in the disposable safety syringe provided by the present invention, the slide rail 21 is not provided with a convex point 211 near the front end, and a convex buckle 14 is provided at the front edge of the upper stopper 133, and the outer surface of the protective sleeve 2 is provided. A convex block 25 is protruded at the front end of the edge, and a concave buckle 251 is provided at a position of the convex block 25 corresponding to the convex buckle 14 of the front edge of the upper blocking portion 133. When the protective cover 2 is pushed backward, the male button 14 and the female button 251 are engaged, so that the protective cover 2 will not be displaced. In addition, a convex buckle 14 may also be provided at the rear end of the upper blocking portion 133, and the end of the convex buckle 14 has a plugging portion 141, and the end of the protective cover 2 is also provided with a convex block 25 having a concave buckle 251. A buckling portion 252 is provided on the inner side of the concave buckle 251. Therefore, when the disposable safety syringe provided by the present invention is used up, the protective sleeve 2 can be pushed forward to accommodate the convex buckle 14 at the rear end of the upper blocking portion 133. In the concave buckle 251, the plugging portion 141 and the buckling portion 252 are engaged with each other, so that the protective cover 2 can no longer be pushed back, thereby achieving the purpose of avoiding secondary use by people. In addition, the convex buckles 14 provided at the front end and the rear end of the upper blocking portion 133 may be interchanged with the concave buckles 251 on the convex block 25.

As shown in FIG. 17, in the disposable safety syringe provided by the present invention, the slider 13 is not provided on the insertion portion 11. The protective cover 2 is composed of a front cover 111 and a rear cover 112. A ring stop 113 is provided on an opening side edge of the front cover 111, and a ring-shaped sheet 114 is provided between the front cover 111 and the rear cover 112. The connection is made, and an offset angle is generated between the axis of the ring-shaped piece 114 and the axis of the front cover 111 and the rear cover 111. Before the disposable safety syringe provided by the present invention is used, the front protective cover 111 and the rear protective cover 112 are sleeved on the outer edge of the insertion portion 11 of the injection needle 1, and the injection needle 12 is covered by a conventional needle cover. When you want to perform the extraction or injection, you only need to remove the conventional needle cover, and after the extraction or injection is completed, the front cover 111 is pulled forward. The axis of the front cover 111 and the rear cover 112 have an offset angle, which causes the front cover 111 to shift when it is pulled forward, so that the injection needle 12 is accommodated in the inner side wall surface and the ring stop of the front cover 111 Between 113, the injection needle 12 cannot be pushed out of the front cover 111, and the purpose of preventing secondary use by a person is achieved. In addition, the axis of the ring-shaped piece 114 may be coaxial with the axis of the front cover 111 and the rear cover 112, and the connection of the ring-shaped piece 114 and the front cover 111 is only one point or one side, so that When the front cover 111 is pulled forward, an offset situation may also occur. As shown in FIG. 18, in the disposable safety syringe provided by the present invention, the slider 13 can also be separated from the plug-in portion 11, and an annular groove 15 is recessed inward on the plug-in portion 11, and the slider 13 A buckle hole 16 is provided in the middle of the base 131, and the buckle hole 16 covers the outer edge of the annular groove 15, so that the disposable safety syringe provided by the present invention can adjust the tip of the injection needle 12 by rotating the plug portion 11 The direction of the bevel. In addition, the outer edge of the front end of the plug-in portion 11 can also correspond to the position of the inclined surface of the tip of the injection needle 12, and a number of marks are provided to allow the medical staff to rotate the plug-in portion 11 after the needle 12 is inserted into the patient's injection portion. The direction of the bevel of the tip of the injection needle 12 is known.

As shown in FIG. 19, FIG. 20, and FIG. 21, in the disposable safety syringe provided by the present invention, an accommodating portion 26 may be provided at the rear end of the check stop 212 of the protective cover 2, and the accommodating portion 26 is located inside the accommodating portion 26. A number of non-return stoppers 212 are provided on the periphery, and the protective cover 2 is tapered forward from the position of the convex point 211 provided at the rear end of the slide rail 21, so when the protective cover 2 is pushed forward after extraction and injection, The upper stop portion 133 is pressed into the accommodating portion 26 and blocked by the check block 212, so that the upper stop portion 133 cannot escape from the accommodating portion 26, thereby achieving the purpose of avoiding being used twice. In addition, the protective cover 2 may not be designed to be tapered forwardly from the convex point 211 provided at the rear end of the slide rail 21 to make the protective cover 2 from the convex point 211 provided at the rear end from the slide rail 21 Swell up. Secondly, the position of the slide rail 21 near the rear end may not be provided with the bump 211, and the upper cover 133 is covered with a cover 27 (as shown in FIG. 21). The cover 271 placed in the slide rail 21 and the accommodating portion 26 enables the disposable safety syringe of the present invention to be positioned by the cover 27 before use, so that the protective cover 2 will not be displaced and avoid danger.

As shown in FIG. 22 and FIG. 23, in the disposable safety syringe provided by the present invention, the back end of the slide rail 21 may not be provided with a check block 212, but at the inner wall surface of the rear end of the slide rail 21 or the rear end of the protective sleeve 2. An offset bevel 27 is generated, and a ring stop 28 is provided at the front end of the protective cover 2 only for the injection needle 12 to pass out. When the protective cover 2 is pushed forward after injection or extraction, the protective cover 2 is subject to the offset bevel. The influence of 27 causes a tilt, so that the injection needle 12 is blocked by the ring stopper 28 and can no longer be penetrated by the protective cover 2, thereby achieving the purpose of preventing secondary use by a person.

As shown in FIG. 24, the disposable safety syringe provided by the present invention mainly includes: an injection needle 1, an injection needle 12 is inserted at the front end of the injection needle 1, and a slider 13 is provided on the outer edge of the injection needle 1, The slider 13 is composed of a base 131, a guide rod 132, and an upper blocking portion 133.

An indwelling needle 6 is provided with a hose 62 extending from the front end of a cannula 61, and a ring stopper 63 is provided on the rear edge of the cannula 61.

A protective cover 2 is provided with a slide rail 21 on the outer edge of the protective cover 2, and bumps 211 are provided on one or both sides of the slide rail 21 near the front end and the rear end, and the slide rail 21 is near the rear end. There is a delta behind 211 There are one or more non-return stoppers 212, and the inner edge of the front end of the protective cover 2 is provided with a plurality of hooking portions 7.

The indwelling needle 6 is sleeved on the front edge of the injection needle 1 with a cannula 61, and the hose 62 is covered on the outside of the injection needle 12, and the protective sleeve 2 is sleeved on the outer edge of the injection needle 1, wherein the injection needle 1 A guide rod 132 is passed through the slide rail 21 of the protective cover 2, and the base 131 abuts against the inner wall surface of the protective cover 2, and the upper blocking portion 133 abuts the outer wall surface of the protective cover 2. Before the single-use safety syringe provided by the present invention is used, the upper stop 133 is fixed between the bump 211 near the rear end of the slide rail 21 and the check block 212. When the injection needle 12 is to be inserted into the injection part of the patient It is only necessary to pull the protective cover 2 backward to disengage the upper stop 133 from the protruding point 211 of the slide rail 21 near the rear end, and approach the convex point 211 of the front end through the slide rail 21 to expose the injection needle 12 from the front end of the protective cover 2 The rear wall of the upper stop portion 133 of the slider 13 is blocked by the bump 211 near the front end of the slide rail 21 and cannot be backed out, and the hook portion 7 at the front end of the protective sleeve 2 passes the ring stop portion 63 of the indwelling needle 6. Then, insert the injection needle 1 with the injection needle 12 into the injection part of the patient, and push the protective sleeve 2 forward, and the hook 7 of the protective sleeve 2 abuts the ring stop 63 of the indwelling needle 6, and the indwelling needle 6 The hose 62 is pushed forward into the injection part of the patient. At this time, the medical staff presses the junction of the hose 62 of the indwelling needle 6 with the patient's injection part and holds the protective sleeve 2 and then pulls the injection needle 1 backward so that The upper stop 133 of the slider 13 passes through the check block 212 at the rear end of the slide rail 21 Retreated stopper block 212 by the stop slider 13 is made of the protective sheath 2 can not be retracted again. In addition, when the injection needle 1 is pulled backward, the injection needle 12 is withdrawn from the patient's injection section, and the medical staff presses the hose 62 of the indwelling needle 6, leaving the indwelling needle 6 in the patient's injection section. The injection needle 12 is separated, so that the medical staff can use the cannula 61 of the indwelling needle 6 to connect with a drip, a syringe, or other extraction equipment to perform an extraction or injection operation. In addition, the convex point 211 and the check block 212 provided on the outer edge of the protective cover 2 may also be provided on the inner wall surface of the slide rail 21 for blocking the guide rod 132 of the slider 13. In addition, a bump 211 and a non-return stopper 212 provided on the outer edge of the protective cover 2 may also be provided on the inner side wall surface of the protective cover 2 for blocking the base 131 of the slider 13.

As shown in FIG. 25, before the disposable safety syringe provided by the present invention is used, the front edge of the protective sleeve 2 abuts against the rear side of the sleeve 61, and the front edge of the protective cover 2 is provided with a plurality of connecting members 8 (such as a hook (Or glue ... etc.) for fastening or sticking to the ring stop 63 of the indwelling needle 6, and the injection needle 12 is covered by a conventional needle cover. When extracting or injecting, just remove the conventional needle cap, and then insert the injection needle 1 with the injection needle 12 into the patient's injection section, and then push the protective sleeve 2 forward and press it through the front edge of the protective sleeve 2 The ring stop 63 of the indwelling needle 6 is pushed forward, so that the hose 62 of the indwelling needle 6 is pushed forward into the patient's injection section. At this time, the medical staff presses the joint 62 of the indwelling needle 6 and the patient's injection section and holds it. Protective cover 2, then pull the injection needle 1 backward, so that the upper stop 133 of the slider 13 passes through the check block 212 at the rear end of the slide rail 21, and The block 212 blocks the slider 13 so that the protective cover 2 can no longer move backward. In addition, when the injection needle 1 is pulled backward, the injection needle 12 is withdrawn from the patient's injection section, and the medical staff presses the hose 62 of the indwelling needle 6, leaving the indwelling needle 6 in the patient's injection section. The injection needle 12 is separated, so that the medical staff can use the cannula 61 of the indwelling needle 6 to connect with a drip, a syringe, or other extraction equipment to perform an extraction or injection operation. In addition, the protective cover 2 may only cover the tip of the injection needle 12 with the front end, and the rear end of the protective cover is replaced by a piece 24. ―

Figure 26, Figure 27, Figure 28, Figure 29, Figure 30, Figure 31, Figure 32, Figure 33, Figure 34, Figure 35, Figure 36, Figure 37, Figure 38, Figure 39, Figure 40, Figure 41, Figure As shown in FIG. 42 and FIG. 43, in the above-mentioned single-use safety syringe with an indwelling needle of the present invention, in addition to the hook portion 7 provided at the front end of the protective cover 2, the structure of the protective cover 2 and the slider 13 can also be as shown in FIG. 2 described above. , Figure 3, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 16, Figure 17, Figure 19, Figure 20, Figure 21, Figure 22 and Figure Structure shown at 23.

As shown in FIGS. 43 and 44, in the disposable safety syringe provided by the present invention, the ring-shaped piece 114 may also be replaced by a telescopic tube 115, and the axis of the telescopic tube 115 is offset from the axis of the injection needle 112. The angle of the front cover 111 is shifted when the front cover 111 is pulled forward, and the front edge of the front cover 111 is provided with a plurality of connecting members 8 (such as hooks or adhesives, etc.). The ring stop 63 of the indwelling needle 6 is used for buckling or sticking.

As shown in FIG. 45, in the disposable safety syringe provided by the present invention, the outer edge of the injection needle 1 is convexly provided with a plurality of symmetrical hand grips 115, and the protective cover 2 is provided with the hand grips 115 for wearing. The sliding groove 218 is inserted, so that medical personnel can hold the hand grip 115 for operation when operating the disposable safety syringe provided by the present invention, so as to avoid the situation that the injection needle 1 is covered by the protective cover 2 and is not easy to operate. . In addition, the outer edge of the injection needle 1 may not be provided with a grip portion 115, and the protective sleeve 2 may not be provided with a sliding groove 218, but another slider 13 is provided on the other side of the outer edge of the injection needle 1 corresponding to the slider 13, The protective sleeve 2 is provided with a slide rail 21 at a position corresponding to the slider 13, so that the medical staff can hold the upper block 133 of the two sliders 13 during operation, which can also prevent the injection needle 1 from being covered by the protective sleeve 2 Overwhelming and difficult to operate.

The above detailed description is a specific description of the feasible embodiments of the present invention. The examples are not intended to limit the patent scope of the present invention. Any equivalent implementation or change made according to the present invention should be included in the patent scope of the present invention. in. Industrial applicability

The single-use safety syringe provided by the invention is easy to operate, has good safety, and does not need to worry about being used twice by people, and is suitable for the medical and sanitary industries.

Claims

Rights request

1. A single-use safety syringe, comprising:

An injection needle, an injection needle is inserted at the front end of a plug-in part of the injection needle, and a slider is provided on the outer edge of the plug-in part, and the slider is composed of a base, a guide rod and an upper stop. Department composition

An injection cylinder, the front end of which is connected with an injection needle;

The injection needle is sleeved on the front end of the syringe with a plug-in portion, the protective sleeve is sleeved on the outer edge of the injection needle, and the injection needle is threaded through the protection sleeve with the guide rod. In the slide rail, the base is abutted against the inner side wall surface of the protective sleeve, and the upper blocking portion is abutted against the outer side wall surface of the protective sleeve.

2. The single-use safety syringe according to claim 1, characterized in that: a bump and a check stop provided on the outer edge of the protective sleeve can also be provided on the inner wall surface of the protective sleeve or the slide rail.

3. The disposable safety syringe according to claim 1, wherein: the outer edge of the protective sleeve is not provided with a bump and a check stop, and an opening is recessed downward at the end of the slide rail, and One or more bumps are protruded at the junction between the slide rail and the opening, and a bottom of the upper end of the injection needle is provided with a bump that can be accommodated in the opening.

4. The disposable safety syringe according to claim 1, characterized in that: the sliding rail of the protective sleeve is not provided with a bump near the front end, and a tapered clamping portion is formed at the front end of the sliding rail.

5. The single-use safety syringe according to claim 1, wherein the protective sleeve is in the shape of a sheet or a semicircle instead of a rear side except for retaining the position of the front end covering the tip of the injection needle.

6. The single-use safety syringe according to claim 1, characterized in that: there is no bump near the rear end of the slide rail, and the upper stopper and the protective sleeve are directly connected by a connecting member, and the connecting member can be adopted Adhesive, other adhesive components or other bonding methods.

7. The disposable safety syringe according to claim 1, characterized in that: the protective sleeve is provided with a screw-in groove on the rear side of the non-return stop at the end of the slide rail, and the screw-in groove and the slide rail are opposite to each other. There are several non-return stoppers in the connected position.

8. The single-use safety syringe according to claim 7, characterized in that: there is no convex point near the front end of the slide rail, and a screw-in groove is provided on one side of the front end of the slide rail.

9. The single-use safety syringe according to claim 1, wherein: the protective sleeve is not provided with a non-return stop at the rear end of the slide rail, and a protrusion is extended upward at one side of the end of the slide rail, and A buckle is provided on the convex block, and a convex buckle is provided on the upper block corresponding to the position of the buckle hole of the convex block.

10. The single-use safety syringe according to claim 9, characterized in that: the buckle hole on the convex block can be replaced with the convex buckle provided in the upper stop part.

11. The single-use safety syringe according to claim 9, wherein: the projection is disposed at a position close to the end of the slide rail, and the projection is not provided with a button hole, and the upper stop A non-return stop is provided on the part.

The single-use safety syringe according to claim 11, wherein a non-return stopper of the upper stopper is provided on the convex block.

13. The single-use safety syringe according to claim 1, characterized in that: a backstop is not provided behind the slide rail, and a bottom end of the upper stop portion extends downward to be able to be hooked on a protective sleeve Hook on the inside wall of the rear end.

14. The single-use safety syringe according to claim 1, characterized in that: one or both sides of the upper stop portion extend downward through a hook, and the slide rail of the protective sleeve is close to the front end and close to the rear end. A plurality of grooves are provided on one or both sides, and a perforation is provided on one or both sides of the end of the slide rail of the protective sleeve.

15. The single-use safety syringe according to claim 1, wherein: a convex point is not provided at a position close to the front end of the slide rail, and a concave buckle is provided on a protective sleeve at the front end of the slide rail, and A convex buckle is provided at the bottom edge of the front end of the upper blocking part, and the convex buckle of the upper blocking part and the female buckle of the protective sleeve can be interchanged with each other.

16. The single-use safety syringe according to claim 1, wherein: a convex point is not provided at a position near the front end of the slide rail, and a convex part is provided at a bottom edge of the front end of the upper stop part, and The front and back ends of the convex portion are inclined.

17. The single-use safety syringe according to claim 1, wherein, in addition to retaining the position of the front end covering the tip of the injection needle, the protective sleeve is replaced by a sheet on the rear side, and the injection cylinder corresponds to A concave portion is provided on the sheet body on the rear side of the protective sleeve.

18. The single-use safety syringe according to claim 1, wherein, in addition to retaining the position of the tip covering the tip of the injection needle, the protective sleeve is replaced by a sheet on the rear side, and the bumps and stops The return block is disposed on the inner side wall surface of the slide rail, and the slider is not provided with an upper stop portion, and an outer edge of the injection cylinder is convexly provided with a rear side sheet body for the protective sleeve.包部。 Covering section.

19. The single-use safety syringe according to claim 1, wherein: the slide rail is close to There is no convex point at the front end, but a convex buckle is provided at the front edge of the upper block, and a convex block is convexly provided at the front end of the outer edge of the protective cover, and the convex block corresponds to the front edge convex buckle of the upper block. There is a concave buckle at the position, and the convex buckle of the upper block and the concave buckle of the convex block can be replaced with each other.

20. The single-use safety syringe according to claim 19, characterized in that: a convex buckle is provided at the rear end of the upper stop part, and an end of the convex buckle has a plugging part, and an end of the protective sleeve A convex block with a concave buckle is also provided, and a buckling portion is provided on the inner side of the concave buckle.

21. The single-use safety syringe according to claim 1, characterized in that: there is no slider on the plug-in part, and the protective sleeve is composed of a front cover and a rear cover, and the front A ring stop is provided on the opening side edge of the inner edge of the cover, and a ring-shaped sheet is connected between the front cover and the rear cover, and the axis of the ring-shaped sheet and the front cover An offset angle is generated between the shaft center of the rear cover.

22. The single-use safety syringe according to claim 21, wherein: the axis of the ring-shaped sheet is coaxial with the axis of the front cover and the rear cover; The connection of the front cover is only a single point or a single side connection.

23. The single-use safety syringe according to claim 1, wherein: the slider is separated from the plug-in part, and a circular groove is recessed inward on the plug-in part, and the A buckle hole is provided in the middle of the base, and the buckle hole covers the outer edge of the annular groove.

24. The single-use safety syringe according to claim 1, wherein: a receiving portion is provided at the rear end of the check block of the protective sleeve, and a plurality of check blocks are provided on the inner periphery of the receiving portion, In addition, the protective sleeve is tapered forward from the position of the bump near the rear end of the slide rail.

25. The single-use safety syringe according to claim 24, characterized in that the protective sleeve does not adopt a design in which the protruding point provided by the slide rail near the rear end is tapered forward, so that the protective sleeve is free from The slide rail is bulged upward near a bump provided at the rear end.

26. The single-use safety syringe according to claim 24, wherein: the sliding rail is not provided with a bump near the rear end, and a cover is used to cover the upper stop portion of the slider, and A cover body is respectively extended at the front end and the rear end of the cover and can be placed in the slide rail and the accommodating portion.

27. The single-use safety syringe according to claim 1, wherein: the back end of the slide rail is not provided with a check block, and is generated on the inner wall surface of the rear end of the slide rail or the rear end of the protective sleeve. The oblique angle is offset, and a ring stop portion that can only be penetrated by the injection needle is provided at the front end of the protective sleeve.

28. A single-use safety syringe, comprising:

An injection needle, an injection needle is inserted at the front end of the injection needle, and an outer edge of the injection needle is provided with a slider, and the slider is composed of a base, a guide rod and an upper stop; A indwelling needle, a hose is extended at the front end of a set of tubes of the indwelling needle, and a ring stop is provided at the rear edge of the sleeve;

A protective sleeve, a slide rail is provided on the outer edge of the protective sleeve, and bumps are provided on one or both sides of the slide rail near the front end and the rear end, and the slide rail is near the rear end. One or more check-stops are provided at the rear, and a plurality of hooking portions are also provided in the opening at the front end of the protective sleeve;

The indwelling needle is sleeved on the front edge of the injection needle with the cannula, the hose is wrapped on the outside of the injection needle, and the protective sleeve is sleeved on the outer edge of the injection needle, Wherein, the injection needle is penetrated by the guide rod in the slide rail of the protective sleeve, and the base is pressed against the inner side wall surface of the protective sleeve, and the upper blocking portion is pressed against the The outer wall surface of the protective cover.

29. The single-use safety syringe of claim 28, wherein: the front edge of the protective sleeve abuts against the rear side of the cannula, the injection needle is covered by a conventional needle cap, and The front edge of the protective sleeve is provided with a plurality of connecting members for buckling or sticking with the ring stop of the indwelling needle.

30. The single-use safety syringe according to claim 28, wherein: only a front end of the protective cover covers a tip portion of the injection needle, and a rear end of the protective cover is replaced by a piece.

31. The single-use safety syringe according to claim 28, wherein a bump and a check stop provided on an outer edge of the protective cover are provided on an inner wall surface of the protective cover.

32. The single-use safety syringe according to claim 28, wherein: the outer edge of the protective sleeve is not provided with a bump and a check stop, and an opening is recessed downward at the end of the slide rail, and A convex block that can be accommodated in the opening is provided at the bottom of the upper end of the injection needle.

33. The single-use safety syringe according to claim 28, wherein: the sliding rail of the protective sleeve is not provided with a bump near the front end, and a tapered clamping portion is formed at the front end of the sliding rail.

34. The single-use safety syringe according to claim 28, wherein: there is no bump near the rear end of the slide rail, and the upper stopper and the protective sleeve are directly connected by the connecting member, and The connecting member may be adhesive, other adhesive components, or other bonding methods.

35. The single-use safety syringe according to claim 28, wherein the protective sleeve is provided with a screw-in groove on a side behind the check stop at the end of the slide rail, and the screw-in groove and the screw-in groove A plurality of check blocks are provided at positions where the slide rails meet.

36. The single-use safety syringe according to claim 35, wherein: there is no convex point near the front end of the slide rail, and a screw-in groove is provided on one side of the front end of the slide rail.

37. The single-use safety syringe according to claim 28, wherein the protective sleeve is not provided with a bump near the rear end of the slide rail and a non-return stop, and is provided on the side of the end of the slide rail. Extend one A convex block, and a buckle hole is opened on the convex block, and a convex buckle is provided on the upper block portion corresponding to the buckle hole position of the convex block.

38. The single-use safety syringe according to claim 37, wherein: the button hole on the convex block can be replaced with a convex button provided on the upper stop portion.

39. The single-use safety syringe according to claim 37, wherein: the protrusion is disposed at a position close to the end of the slide rail, and the buckle is not provided on the protrusion, and the The convex buckle provided on the upper block is replaced by a non-return block.

40. The single-use safety syringe according to claim 37, wherein: the upper stop is not provided with a convex buckle, the convex block is disposed at a position close to the end of the slide rail, and the convex block The buttonhole on the top is replaced by a non-return stop.

41. The single-use safety syringe according to claim 28, characterized in that: a backstop is not provided behind the slide rail, and a bottom end of the upper stop portion extends downwardly and can be hooked to the stopper The hook on the inner wall surface of the rear end of the protective cover.

42. The single-use safety syringe according to claim 28, characterized in that: one or both sides of the upper stop portion extend downward through a hook, and one side of the slide rail of the protective sleeve is on both sides A plurality of grooves are provided, and a perforation is provided on one side or both sides of the sliding rail of the protective sleeve near the end.

43. The single-use safety syringe according to claim 28, wherein: a convex point is not provided at a position near the front end of the slide rail, and a concave buckle is provided on a protective sleeve at the front end of the slide rail, and A convex buckle is provided on the bottom edge of the front end of the upper blocking portion.

44. The single-use safety syringe according to claim 28, wherein: a convex point is not provided at a position near the front end of the slide rail, and a convex part is provided at a bottom edge of the front end of the upper stop part, and The front and back ends of the convex portion are inclined.

45. The single-use safety syringe according to claim 28, wherein: a convex buckle is provided at the front edge of the upper stop portion, and a convex block is convexly provided at the front end of the outer edge of the protective sleeve, and the convex A concave buckle is provided at the position corresponding to the convex buckle of the front edge of the upper block, and the convex buckle of the upper block and the concave buckle of the convex block can be replaced with each other.

46. The disposable safety syringe according to claim 45, characterized in that: a convex buckle is provided at the rear end of the upper stop part, a tip of the convex buckle has a plug part, and a tip of the protective sleeve is also A convex block with a concave buckle is provided, and a buckling portion is provided on the inner side of the concave buckle.

47. The single-use safety syringe according to claim 28, wherein a receiving portion is provided at the rear end of the check block of the protective sleeve, and a plurality of check blocks are provided on the inner periphery of the receiving portion. , And The protective sleeve is tapered forward from the position of the bump near the rear end of the slide rail.

48. The single-use safety syringe according to claim 47, characterized in that: the protective sleeve does not need to be designed to be tapered forward from a convex point provided on the rear end of the slide rail, so that the protective sleeve The sliding rail protrudes upward from a protruding point provided near the rear end.

49. The single-use safety syringe according to claim 47, wherein: the slide rail is not provided with a convex buckle near the rear end, and a cover is used to cover the upper stop portion of the slider, and A cover body is respectively extended at the front end and the rear end of the cover and can be placed in the slide rail and the accommodation portion.

50. The single-use safety syringe according to claim 28, characterized in that: the back end of the slide rail is not provided with a check block, and is generated on the inner wall surface of the rear end of the slide rail or the rear end of the protective sleeve. The oblique angle is shifted, and a ring stop portion that can only be penetrated by the injection needle is provided at the front end of the protective sleeve.

51. The single-use safety syringe according to claim 28, characterized in that: there is no slider on the injection needle, and the protective sleeve is composed of a front cover and a rear cover, and the front cover A ring stop is provided on the opening side edge of the inner edge of the cover, and a ring-shaped sheet is connected between the front cover and the rear cover, and the axis of the ring-shaped sheet and the front cover are connected. An offset angle is generated between the shaft center of the back cover, and a plurality of connecting members are provided on the front edge of the front cover to buckle or adhere the ring stop of the indwelling needle.

52. The single-use safety syringe according to claim 51, wherein: the axis of the ring-shaped sheet is coaxial with the axis of the front cover and the rear cover; The connection of the front cover is only a single point or a single side connection.

53. The single-use safety syringe according to claim 51, wherein the ring-shaped piece is a telescopic tube, and the axis of the telescopic tube and the axis of the injection needle have an offset angle. -

54. The single-use safety syringe according to claim 28, wherein: the outer edge of the injection needle is convexly provided with a plurality of symmetrical gripping portions, and the protective sleeve is provided with the gripping portions for the gripping portions. Threaded slip groove.

55. The single-use safety syringe according to claim 28, wherein: the outer edge of the injection needle is provided with another slider corresponding to the other side of the slider, and the protective sleeve corresponds to the other slider The position of the block is provided with a slide rail.