JP3109494U - Single-use safety syringe - Google Patents

Abstract

The present invention provides a single-use safety syringe for collecting a syringe needle by covering the used syringe needle with a protective cover in order to reduce the risk of a human being stuck.
A cylindrical protective lid is incorporated on a cylinder of a syringe, and a pinch fixing portion having a coupling groove is formed at a rear portion of the protective lid. The front and rear protrusions that are fastened separably and fasten and fix the fixing adapter for fixing the cylindrical protective lid to the tip of the cylinder to which the injection needle is fixed, and fix the fixing adapter to the inner peripheral surface of the cylindrical protective lid After the syringe is used, the cylindrical protective lid fastened on the cylinder is advanced in the direction of the injection needle, and the fixing adapter is fixed between the front and rear projections on the inner peripheral surface of the cylindrical protective lid. When doing so, make sure that the needle is withdrawn inside the cylindrical protective lid.
[Selection] Figure 1

Description

  The present invention relates to a single-use safety syringe that covers a used syringe needle with a protective cover and collects the syringe needle.

  Recently, almost all syringes are used only once to prevent contact diseases such as hepatitis and AIDS (HIV) from being transmitted to third parties by injection needles, or for hygiene reasons. Single-use syringes for disposal are widely used.

  Since the tip of the injection needle of the single-use syringe is very sharp and the tip of the needle is pointed, careful attention is always required regardless of before and after use.

  In particular, the blood stains of patients are attached to the needles of used syringes, and the blood stains attached to the needles due to carelessness of medical personnel such as doctors and nurses, or third parties. If a situation occurs that enters the body through the skin, the patient's illness may infect a third party.

  Therefore, various syringes have been developed in order to reduce the risk that a third party or the like may inadvertently be stabbed into the injection needle. As a prior art for a safety syringe, for example, a one-time safety syringe described in Utility Model Registration No. 254002, Utility Model Registration No. 195390, Utility Model Registration No. 166124, Utility Model Registration No. 245065, etc. There is a syringe.

  However, when the cylindrical protective cover for collecting the injection needle is moved forward on the cylinder which is the main body of the single-use safety syringe described above, the fastening state is released when the connecting part of the protective cover is pushed. However, when pressing the pinching fixing part, which is such a fastening part, if it is pressed hard or pressed weakly, the operation is often not performed smoothly.

  In particular, when gloves are worn on the hand, it is not easy to operate. Therefore, it is difficult to adjust the force applied to the coupling part when releasing the fastening state of the coupling part, and there are many cases where it cannot be smoothly released. It was.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a single-use safety syringe that can reduce the risk of a human being stuck in a used injection needle. is there.

  In order to solve the above-described problem, according to a first aspect of the present invention, a cylindrical protective lid that is slidable on the outside of a cylinder is provided, a sandwiched fixing portion is provided at the back of the protective lid, A plurality of front protrusions and a plurality of rear protrusions are formed on the inner peripheral surface of the protective lid, and an end of the pinching fixing portion can be fastened with a handle formed at the rear of the cylinder, and the injection needle is fixed adapter A single-use safety syringe is provided that is secured by being tightened. In the one-time safety injector, the pinching and fixing portion is fastened to a pinching hole formed vertically on the inside of the handle, and either the cylinder or the protective lid is rotated in one direction. Thus, the protective lid fastened to the pinching hole is released.

  An elastic piece is formed on the sandwiching and fixing portion, a support piece is formed so as to face the elastic piece, a fastening groove is formed on the support piece, and a cut is formed between the elastic piece and the support piece. A groove may be formed, and a triangular guide protrusion may be formed on the cylinder. Moreover, you may comprise so that an inclined surface may be formed in each edge part of the said elastic piece and a support piece.

  As described above, according to the present invention, the syringe needle of the used syringe can be collected safely and efficiently. It can be made not to receive.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  First, a single-use syringe according to the present embodiment will be described with reference to FIGS. As shown in FIG. 1, the single-use syringe includes a push rod 12 inside a cylinder 11 which is a main body.

  Examples of the syringe include an injection needle-integrated single-use syringe in which the injection needle 15 is integrally fixed to the tip injection needle fixing portion 13 of the cylinder 11 and an injection in which the injection needle 15 is coupled to the injection needle fixing portion 13 at the time of use. There are needle separation and combined single-use syringes and the like.

  As shown in FIG. 3 and the like, the single-use syringe is provided with a cylindrical protective lid 31 (cylindrical protective lid 31) that is slidable along the cylinder 11, and the tip of the cylindrical protective lid 31 is provided. On the outside, a slip stopper 32 is provided to prevent hand slipping during injection.

  As the cylindrical protective cover 31 slides, the entire cylinder 11 is covered as shown in FIG. As shown in FIG. 2, in the state where the cylinder 11 is covered, it can be seen that the injection needle 15 appears outside. In the above state, the cylinder 11 is filled with a chemical solution, and an injection is performed on the human body.

  A rear portion of the cylindrical protective lid 31 is provided with a fixing portion 33 that is sandwiched vertically so as to cut both side walls. Further, as shown in FIG. 4 and the like, a plurality of front protrusions 35 and rear protrusions 36 are provided on the inner peripheral surface.

  Further, when the end 17 of the pinch fixing part 33 provided at the upper part and the lower part of the cylindrical protective cover 31 in the direction of the push rod 12 and the handle 17 formed at the rear part of the cylinder 11 are fastened, as shown in FIG. The cylindrical protective lid 31 and the cylinder 11 according to the present embodiment are in a fastened state.

  A hook (not shown) is held on the needle fixing part 13, and a fastening round stopper (not shown) is provided on the inside of the needle fixing part 13 and the hook (not shown). ) And a fixed adapter 21 having a plurality of elastic pieces (not shown) of 4 to 10 on the outer side, the injection needle can be fixed.

  More specifically, a pinch fixing portion 33 formed at the rear portion of the cylindrical protective lid 31 that can slide and move on the outer surface of the cylinder 11 has an upper pinch hole 18 formed inside the handle 17 behind the cylinder 11. It is concluded with.

  When the cylinder 11 or the cylindrical protective lid 31 is rotated clockwise in one direction left / right, the cylindrical protective lid 31 is fastened to the upper and lower sandwiched holes 18 and the cylinder from the state where the cylindrical protective lid 31 is fastened by the upper and lower sandwiched holes 18. The shape protection lid 31 can be released from the fastening.

  More specifically, referring to “A” in FIG. 1 in which the pinch fixing portion 33 shown in FIG. 1 is enlarged, the pinch fixing portion 33 at the rear of the cylindrical protective lid 31 includes an elastic piece 37, a fastening groove 39, and the like. , And a support piece 38 having the fastening groove 39.

  Further, a cutting groove 40 is provided between the elastic piece 37 and the support piece 38 so that the cutting groove 40 is vertically symmetrical.

  Further, on the surface of the cylinder 11, as shown in FIG. 9, triangular guide protrusions 11-1 for guiding the sandwiching fixture 33 formed on the cylindrical protective lid 31 are provided on both the left and right sides. In addition, an inclined surface 37-1 and an inclined surface 38-1 are formed on the elastic piece 37 and the fastening piece 38 so as to be pointed so as to correspond to the shape of the triangular guide projection 11-1. (See FIG. 10).

  As shown in FIG. 1, the piston packing 20 is attached to the tip of the push rod 12.

  In addition, many of the syringe-integrated single-use syringes have an amount of less than 3 cc that can be filled in the syringe body, and the single-use syringe-separated single-use syringe is a medium-sized / Many are seen with large syringes.

  In addition, a single-use syringe for separating the injection needle is loaded with an injection needle on the injection needle fixing portion at the tip of the injection cylinder, and the injection needle is fixed by pushing the injection needle fixing portion, or the injection needle fixing portion is formed in a spiral shape. There is a rotary type single-use syringe in which a fastening part is formed, and an injection needle is rotated and fixed thereto.

  The single-use safety syringe according to the present embodiment can be applied to any of the above-described injection needle-separated single-use syringe or single-use syringe-integrated single-use syringe.

  In the single-use safety syringe according to the present embodiment, first, as shown in FIGS. 2 and 5, after the cylindrical protective lid 31 is tightened so as to be positioned on the syringe cylinder 11, the cylindrical protective lid 31 is moved up and down. After fixing the pinching fixing part 33 to the pinching hole 18 formed inside the handle 17 existing behind the cylinder 11, the fixing adapter 21 is fastened and fixed on the injection needle fixing part 13. As shown in FIG. 2, the injection needle 15 is exposed to the outside and is ready for injection at any time.

  Next, in the single-use safety syringe according to the present embodiment, the push rod 12 is pulled from the state shown in FIG. 2 (see FIG. 5), and the injection solution is filled inside the cylinder 11 of the syringe. Next, the push rod 12 is advanced (see FIG. 6), and the patient is injected through the injection needle 15.

  Next, after the patient is injected, as shown in FIG. 3, the cylindrical protective cover 31 outside the cylinder 11 is moved forward so as to be positioned on the injection needle 15, and the upper part of the injection needle 15 is moved. The cylindrical protective lid 31 is fixed at the position, and the used syringe needle 15 is collected.

  The fixing adapter 21 fastened to the injection needle fixing portion 13 at the tip of the cylinder 11 according to the present embodiment has a fastening round stop and a hanging round stop (not shown) of the injection needle fixing portion 13 inside. It is fastened so that it meshes.

  Further, as shown in FIGS. 4 to 7, the fixing adapter 21 is fastened and fixed so tightly that it cannot be detached or pulled out after being fixed to the injection needle fixing portion 13. Thus, the fixing adapter 21 fixed to the injection needle fixing part 13 at the tip of the cylinder 11 includes, for example, 4 to 10 plural elastic pieces (not shown), and an elastic piece (not shown). ) Is formed behind the stopper (not shown), and is fastened and fixed to the injection needle fixing portion 13.

  The cylindrical protective lid 31 is slidable on the cylinder 11, and includes two upper and lower sandwiching fixing portions 33 at the rear of the cylindrical protective lid 31. In addition, the triangular guide formed on the surface of the cylinder 11 is sandwiched by a pinch hole 18 formed on the inner side of the handle 17 at the rear of the cylinder 11 at the tip of the two upper and lower pinch fixing portions 33 and is integrally coupled with the cylinder 11. The pinch fixing portion 33 of the cylindrical code lid 31 that moves backward (back) by the projection 11-1 is easily fastened and fixed to the pinch hole 18 of the handle 17 of the cylinder 11.

  When the cylindrical protective lid 31 is rotated, the pinch fixing portion 33 coupled to the pinch hole 18 is released from the coupling between the pinch fixing portion 33 and the pinch hole 18 of the handle 17 of the cylinder 11. If the cylindrical protective cover 31 is pushed in the direction of the front injection needle while rotating 33, the cylindrical protective cover 31 moves forward on the injection needle 15.

  That is, as shown in FIG. 10, the sandwiching and fixing portion 33 at the rear of the cylindrical protective lid 31 is provided with a support piece 38 composed of an elastic piece 37 and a fastening groove 39, so that the elastic piece 37 and the support piece are provided. When the sandwiching and fixing portion 33 is formed symmetrically so that the cutting groove 40 is provided between 38 and the cylindrical protective lid 31 is rotated by applying a force, the cylindrical fixing lid 33 is cylindrical in the direction of the arrow shown in FIG. When the protective lid 31 is rotated, the elastic piece 37 bends in the direction of the cutting groove 40, and at the same time, the fastening with the pinching hole 18 of the cylinder 11 held in the fastening groove 39 of the support piece 38 is released, and FIG. The cylindrical protective lid 31 can be slid and moved as indicated by the horizontal arrow shown in c).

  The cylindrical protective cover 31 that moves forward in the direction of the injection needle 15 is advanced until the inner front projection 35 hits a stopper behind the fixed adapter 21, and then a slight force is applied to the cylindrical protective cover 31. Is pushed forward, the front protrusion 35 exceeds the elastic piece (not shown) of the fixed adapter 21, and the front end of the elastic piece collides with the front protrusion 35. At the same time, the rear protrusion 36 hits a stopper (not shown) behind the elastic piece, and the cylindrical protective cover 31 can be fixed in a state where it cannot move back and forth.

  That is, the cylindrical protective cover 31 that moves forward moves forward until the fixing adapter 21 is fastened between the front protrusions 35 and the rear protrusions 36 formed at regular intervals on the inside thereof, and then stops and fixes. As described above, the cylindrical protective lid 31 that moves in the direction of the injection needle along the cylinder 11 is provided with an elastic piece of the fixing adapter 21 that is fastened and fixed to the injection needle fixing portion 13 that is the tip of the syringe. When the needle 15 is moved and fixed between the front projection 35 and the rear projection 36 on the circumferential surface and fixed, the injection needle 15 is placed inside the cylindrical protective lid 31. Therefore, the cylindrical protective cover 31 protects the injection needle 15 of the used syringe, and it is possible to avoid a situation where the human body is stuck with the injection needle 15 of the used syringe.

  As described above, in this embodiment, the cylindrical protective lid 31 is moved forward on the cylinder 11 which is the main body of the single-use safety syringe by moving the cylindrical protective lid 31 over the injection needle 15. When it is rotated by applying a slight force, it can be easily separated from the fastening state of the cylindrical protective cover 31 and the cylinder 11, and the cylindrical protective cover can be easily attached even when wearing gloves. You can move the slide.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It is obvious that a person skilled in the art can conceive various changes or modifications within the scope described in the claims for utility model registration, and these naturally belong to the technical scope of the present invention. It is understood.

  The present invention can be applied to a syringe or the like.

It is a disassembled perspective view which shows an example of the outline of the syringe concerning this Embodiment. It is a perspective view just before use of the syringe concerning this Embodiment. It is a perspective view which shows that the protective cover was advanced forward after use of the syringe concerning this Embodiment, and the injection needle was fixed. It is an exploded sectional view of the syringe concerning this embodiment. It is sectional drawing just before use of the syringe concerning this Embodiment. It is sectional drawing which showed moving a protective cover forward after use of the syringe concerning this Embodiment. It is sectional drawing which shows advancing a protective cover after use of the syringe concerning this Embodiment, and fixing an injection needle. It is the plane cross-sectional view and longitudinal cross-sectional view of the protective cover concerning this Embodiment. It is a top view of the syringe assembly state which shows that the protective cover formed the triangular guide protrusion on the cylinder surface behind the cylinder concerning this Embodiment. It is the fragmentary sectional view which showed the process in which the cylindrical protective cover concerning this Embodiment couple | bonds with the pinching hole formed inside the handle of a cylinder. It is a fragmentary sectional view which shows the process in which the cylindrical protective cover couple | bonded with the pinching hole of the cylinder concerning this Embodiment is isolate | separated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Cylinder 12 Push rod 13 Injection needle fixing | fixed part 15 Injection needle 17 Handle 18 Upper and lower pinching hole 20 Piston packing 21 Fixing adapter 31 Cylindrical protective cover 32 Anti-slip | round | yen 33 Fixing part 35 Front protrusion 36 Back protrusion 37 Elastic piece 38 Supporting piece 39 Fastening groove 40 Cutting groove 11-1 Triangular guide protrusion 37-1, 38-1 Inclined surface

Claims (3)

A cylindrical protective lid that can be slidably moved is provided outside the cylinder, and is sandwiched by a rear portion of the protective lid, and is provided with a fixed portion at the top and bottom. In a single-use safety syringe, the end of the pinching fixing part can be fastened with a handle formed in the rear part of the cylinder, and the injection needle is fixed by tightening a fixing adapter:
The pinching fixing portion is fastened to a pinching hole formed vertically on the inside of the handle, on the outside of the cylinder,
The single-use safety syringe according to claim 1, wherein the protective lid fastened to the pinch hole is released by rotating one of the cylinder and the protective lid in one direction.   An elastic piece is formed on the sandwiching fixing portion, a support piece is formed so as to face the elastic piece, a fastening groove is formed on the support piece, and a cut is formed between the elastic piece and the support piece. The single-use safety syringe according to claim 1, wherein a ligation groove is formed, and a triangular guide protrusion is formed on the cylinder. The single-use safety syringe according to claim 1 or 2, wherein an inclined surface is formed at each end of the elastic piece and the support piece.

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