TH25720A - "Safe retractable syringe with no seal ring" - Google Patents

Abstract

The sprayer is used safely with The central needle that is secured to fit in the casing is on the section. Front of the syringe, a sliding holder directly in the syringe for injection, a coupling that is mounted in the injector that is compatible with the retaining insert. That is recessed into the back of the needle part of the hollow needle with the retaining insert, under which the injector is pushed towards the needle By inserting the articulate into the needle retainer insert after the injection is finished The brace insert will be pushed against the articulation. And under the back of the syringe and the needle into the syringe The needle will tilt down automatically. To prevent Protruding the back of the needle From the cylinder to prevent impact with other parts by the hollow needle is a ring. With the concave edge of the teeth In the receptacle of the hollow needle that will Fixed with ring-shaped teeth located in the inner surface of the casing Together to prevent rebound The outside of the needle is hollow during injection. And to have a convenient detachment to the back of A hollow needle from the sleeve that will be retracted into the syringe. When finished injection:

Claims (3)

1.Safe used syringes for intravenous injection. Contains: Syringe path (1) with a syringe (11) used to fill liquid medicine (4) in it, a casing (12) located in different centers on the front of the syringe path (1) as follows. With a center opening (121) through the casing (12) and the shaft of the syringe (100) longitudinal in the center. Of the path of the aforementioned syringe (1); The needle device (2) that includes: the needle (2) and the support (22) are connected to the needle (21) and held in the sheath (12), the groove (25) is split into two longitudinal segments. It is at the end of the receiver (22) and is concave to the front. From the tip of the needle (230) to the back, the conical insert (27) insert insert (27) is in the back of the support (22) and is connected to the guide (231) at the forward concave. From the rear needle tip (230) and the longitudinal needle shaft (200) in the center of the needle device (2), the support (22) and the rear needle tip (230) are made of flexible plastic material. By means of the aforementioned inserts (27), the longitudinal conical axis (270) deflects the arc at a sharp angle (A) from the needle axis (200), which is set in the longitudinal direction. In the center part of the aforementioned needle device (2) and parallel to the axis of the syringe (100) of the syringe path (1); And the way of the injectors (3), there will be an injector (31) moving in the said syringe (11) to push the liquid medicine (4) in the syringe (11) through the aforementioned needle device (2). Protruding and aiming the retainer (27) in the needle apparatus (2) and is pushed into the said insert (27) to attach the tip of the arrow (301) to the needle device when Finished injection And under the recoil of the injector (31) and the needle device (2) that are assembled with the injector (31) into the said syringe (11), the needle device (2) will automatically return. And was pulled inward and bent inward Attach the syringe axis (100) towards the front barrier (15 a) of the syringe (11) to prevent further protrusion of the needle (2) from the syringe path (1). ) As above; The new enhancements include: the aforementioned receiver (22) of the aforementioned needle device (2) with a slit (26), an annular recess in the aforementioned receiver (22), and a conical slope (261) exam. Come in a circle around the back on the receptacle (22) towards the furrow (26); And such sheath (12) with ringed teeth (120) on the inner surface. Of the center cavity (121) of the aforementioned sleeve (12) and is attached to the said flute (26) that is concave into the aforementioned receiver (22) of the aforementioned needle device (2) and has a sloping surface. The inner cone (120 a) flares outward from the tooth (120) in the aforementioned casing (12) and is attached to the slanted conical surface (261) as of the receiver (22). ) As aforementioned of the aforementioned needle apparatus (2), where, under the liquid injection (4) in the syringe (11), it induces a softening of the aforementioned (26) cavity of the receiver (22). The device's (2) needle to prevent ejection to the front. Of such needle apparatus (2), from the aforementioned sleeve (12), of the aforementioned syringe path (11), and under the retraction of such needle device (2) attached on the injector (31). Into the syringe (11), when finished injecting. Such a conical slope (261) on the receiver (22) of the aforementioned needle device (2) is aligned rearward along the aforementioned inner contour (120d) surface. In the aforementioned casing (12) for convenient retraction of the said needle device (2) into the said syringe (11). 2.Sprayers used safely As stated in claim 1, where the aforementioned syringe path (11) will have a number of rail extensions (17) located along the inner length of the syringe (11) to Mount in a movable straight line of the aforementioned injector (31) of the injectors path (3) in such syringe (11). 3.Sprayers used safely As stated in claim 1, where the injector path (3) includes a holder (37) protruding behind the injectors (31) with The flattened edge (371) is located on the injector handle (37) so that it can slide back and forth on the flat surface (F); And such a splice (30) with at least one transverse (305) bar on the aforementioned (30) and fixed to at least one transverse edge (34). The recessed into the articulation edge (34) located in the injector (31) to secure the said splice (30) on the said edge of the articulation (34) under the direct forward motion of the injector ( 31) as inside such sprayer (11), such sprayer (31) will not rotate freely. For the attachment of the aforementioned arrow tip (301) of the said coupling (30) to the aforementioned insert (27) in the aforementioned needle device (2).