CN203915681U - Disposable syringe - Google Patents

Abstract

The utility model belongs to the field of syringes, in particular relates to and discloses a disposable syringe, comprising a hollow syringe, a push rod and a needle part, the front end of the push rod is a sealing plug; The internal card part and the needle tube passing through the front end of the card part; a vertical post is extended from the rear end of the card part, and the sealing plug is provided with an inclined socket that can make the needle part tilt when the vertical post is inserted; the vertical post There is an inclined card on the periphery that is inclined to the end of the vertical column, and the inner wall of the inclined socket forms an annular groove that can hold the inclined card so that the needle part enters the syringe with the push rod; The needle tube protection cover, the front end of the needle tube protection cover is close to the end of the needle tube. The vertical post and the inclined socket can fix the needle part and the push rod. When the push rod is pulled backward, the needle part can be driven to move backward into the syringe, thereby avoiding repeated use; the needle protection sleeve prevents the needle from being Needle injury.

Description

disposable syringe

technical field

The utility model belongs to the field of syringes, in particular to a disposable syringe.

Background technique

At present, in order to avoid infection caused by repeated use of syringes, disposable syringes are mostly used, and the existing disposable syringes generally include a hollow syringe, a needle at the front end of the syringe, and a push rod that can move back and forth inside the syringe , and the structure between the syringe and the needle is detachable, so many people will replace the needle for convenience and continue to use it, which will undoubtedly lead to the chance of cross-infection and affect people's health; and the needle is thin and long, which is easy to be ignored. During use, it is easy to hurt the user or people around, and the needle will be bent due to the impact; at the same time, the needle cap on the needle is easy to fall off, which is not only dangerous, but also increases the chance of infection during the moving process.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a disposable syringe which can avoid secondary use and enhance use safety.

In order to achieve the above object, the utility model adopts the following technical solutions: a disposable syringe, including a hollow syringe, a push rod that can move back and forth in the syringe, and a needle part that is located at the front end of the syringe, and the front end of the push rod It is a sealing plug; the needle head part includes a clamping part that is clamped inside the front end of the syringe and a needle tube passing through the front end of the clamping part; a vertical post extends axially from the rear end of the clamping part, and the sealing plug and the vertical posting The corresponding place is provided with an inclined jack that can tilt the needle part when the vertical post is inserted; the periphery of the vertical post is provided with an inclined card that is inclined to the end of the vertical post, and the inner wall of the inclined socket is formed to be stuck Tilt the card so that the needle part enters the annular groove in the syringe with the pull of the push rod; a detachable needle tube protective sleeve is sleeved on the outer periphery of the front end of the syringe, and the front end of the needle tube protective sleeve is close to the end of the needle tube. The front end of the needle cylinder is provided with an end cap that seals when the needle part enters the cylinder; the inner wall of the rear end of the cylinder forms a clamping section that prevents the push rod from detaching from the cylinder. The vertical post and the inclined socket are set, when the vertical post is inserted into the inclined socket, the entire needle head part can be tilted, and the card and the groove are provided to make the vertical post stuck in the inclined socket, thereby achieving The fixation of the needle part and the push rod, after an injection, when the push rod is pulled backward again, the needle part can be driven to move backward together into the syringe, thereby avoiding repeated use, avoiding cross-infection, and the spread of diseases; setting needle protection The sleeve makes the position of the needle more obvious, and also forms a protective circle around the needle, which makes it easier to notice the needle during use, and also reduces the probability of touching the needle, thereby avoiding being injured by the needle; while using When the depth of the needling is deep, you can take off the protective cover of the needle, and when the depth of the needling is shallow, you can wear this protective cover, which can be selected according to individual needs; the sealing cover can be set, and the needle during use can be removed after use. The cotton with the patient's blood is put into the needle protection sleeve and covered with a sealing cover to further prevent dry contamination; at the same time, it can further prevent the needle tube from drilling out from the front end, which improves the safety of use; and the clamping section can further prevent the push rod Drilling out from the syringe, thereby preventing the needle part from drilling out from the rear end of the syringe, further improving the safety of use.

Preferably, the rear end of the syringe and the rear end of the push rod extend along a radially extending edge for easy gripping, and anti-slip lines are formed on both sides of the edge. The grip edge is convenient for the user to hold, and the anti-slip pattern enhances the stability and anti-slip performance of the use.

Preferably, the syringe includes a fixed section connected with the needle part and a moving section for the push rod to slide, and the diameter of the fixed section is smaller than that of the moving section. This setting can prevent the needle part from being pushed out of the syringe due to excessive thrust, and at the same time, all the liquid in the syringe can be injected into the patient's body.

Preferably, the push rod is composed of the first push plate and the second push plate crossing in a cross shape, and the locking section is formed by extending from the rear end edge of the syringe to the gap between the first push plate and the second push plate Rectangular bars. The setting structure is simple, easy to implement, and has a good blocking effect. When the recovery personnel need to separate it, they can pull it out without a lot of force, and after the syringe is used, it can avoid pushing it due to vibration and other reasons. The rod and barrel separate.

In summary, the utility model has the following advantages: the vertical post and the inclined socket can fix the needle part and the push rod, and when the push rod is pulled backward, the needle part can be moved backward together into the syringe, In order to avoid repeated use; the needle protection cover makes the position of the needle more obvious, reducing the probability of touching the needle, thereby avoiding being injured by the needle.

Description of drawings

Fig. 1 is a structural representation one of the utility model;

Fig. 2 is the structural representation two of the utility model;

Fig. 3 is an enlarged schematic diagram of place a in Fig. 2;

Fig. 4 is face b-b in Fig. 2;

Fig. 5 is a structural schematic diagram III of the present utility model.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model.

As shown in Figures 1-5, a disposable syringe includes a hollow cylindrical syringe 1, a push rod 2 and a needle part 3. The push rod 2 is set in the syringe 1 and can move forward and backward. The needle part 3 is arranged at the front end of the syringe 1 , and the front end of the push rod 2 is a sealing plug 4 . The syringe 1 includes a fixed section connected with the needle part 3 and a moving section for the push rod 2 to slide. The diameter of the fixed section is smaller than that of the moving section, and the fixed section and the moving section are integrated.

Specifically, the needle part 3 includes a clamping part 31 and a needle tube 32, the clamping part 31 is clamped inside the front end of the syringe 1, and the needle tube 32 passes through the front end surface of the clamping part 31, and the rear end of the clamping part 31 extends out axially. A vertical post 33, the vertical post is perpendicular to the rear end surface of the card part 31; specifically, the sealing plug 4 is provided with an inclined jack 41 corresponding to the vertical post 33, and the inclined jack 41 is connected to the inserting post 33. The columns 33 cooperate, and when the vertical insertion column 33 is inserted into the inclined socket 41, the vertical insertion column is inclined, thereby causing the needle part 3 to incline; the periphery of the vertical insertion column 33 is provided with an inclined card 34, and the inclined card 34 is inclined to the end of the vertical post 33; the inner wall of the inclined socket 41 forms an annular groove 42, which can hold the inclined card 34, and then the needle part 3 enters the syringe 1 with the push rod 2 pulled, The needle part 3 is inclined toward the inner wall of the syringe; a needle protection sleeve 5 is sheathed on the periphery of the front end of the syringe 1, and the needle protection sleeve 5 is a detachable structure. The depth of the insertion of the needle tube can be selected to keep the needle tube protection cover 5 or take off the needle tube protection cover 5; further, the front end of the needle tube protection cover 5 is provided with an openable end cap 51, which can enter the needle barrel 1 when the needle part 3 , insert the used cotton with the patient’s blood into the needle tube protective sleeve 51, then cover the lid to seal the syringe, which further enhances the effect of preventing infection; at the same time, the inner wall of the rear end of the syringe 1 forms a clamping section 6 , the locking section 7 can prevent the push rod 2 from detaching from the syringe 1. Specifically, the push rod 2 includes a first push plate and a second push plate, the first push plate and the second push plate extend along the length direction of the needle cylinder and intersect to form a cross. The rear edge of the barrel 1 extends inward to form a rectangular bar, and the rectangular bar is located in the gap between the first push plate and the second push plate.

Preferably, both sides of the rear end of the syringe 1 and both sides of the rear end of the push rod 2 radially extend out of the handle 7, and the handle 7 is convenient for holding the syringe during use, while injecting and The infusion is also very convenient; both sides of the grip 7 are formed with anti-slip lines, which are convex lines arranged horizontally or vertically along the surface of the grip, and certainly can be randomly or evenly distributed on both sides of the grip 7. Protrusions.

Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

Claims (4)

1. A disposable syringe, comprising a hollow syringe (1), a push rod (2) arranged in the syringe (1) that can move back and forth, and a needle part (3) arranged at the front end of the syringe (1), The front end of the push rod (2) is a sealing plug (4); it is characterized in that: the needle part (3) includes a locking part (31) which is fixed inside the front end of the syringe (1) and a threading locking part (31) The needle tube (32) at the front end; the rear end of the card part (31) extends a vertical post (33) in the axial direction, and a sealing plug (4) corresponding to the vertical post (33) is provided with a When the column (33) is inserted, the inclined socket (41) that makes the needle part (3) inclined; the outer periphery of the vertical column (33) is provided with an inclined card (34) that is inclined to the end of the vertical column (33) , the inner wall of the inclined socket (41) forms an annular groove (42) that can hold the inclined card (34) so that the needle part (3) enters the syringe (1) as the push rod (2) is pulled; the needle A detachable needle protection sleeve (5) is sheathed on the periphery of the front end of the barrel (1). The front end of the needle protection sleeve (5) is close to the end of the needle tube. The front end of the needle protection sleeve (5) is provided with a The end cap (51) for sealing the syringe (1); the inner wall of the rear end of the syringe (1) forms a clamping section (6) that prevents the push rod (2) from detaching from the syringe (1). 2. The disposable syringe according to claim 1, characterized in that: the rear end of the syringe (1) and the rear end of the push rod (2) extend along the radial direction to facilitate gripping (7) , anti-slip lines are formed on both sides of the grip (7). 3. The disposable syringe according to claim 1, characterized in that: the syringe (1) includes a fixed section connected with the needle part (3) and a moving section for the push rod (2) to slide, the fixed section The diameter is smaller than the diameter of the moving segment. 4. The disposable syringe according to claim 1, characterized in that: the push rod (2) is composed of a first push plate and a second push plate crossing in a cross shape, and the locking section (6) is composed of a needle The rear end edge of the cylinder (1) extends toward the gap between the first push plate and the second push plate to form a rectangular bar.