JP3130988U - Syringe to prevent piercing accident - Google Patents

Abstract

An accident caused by a piercing stick after use of a syringe is effectively prevented.
SOLUTION: A needle mounting base 19 of a needle tube 18 is screwed with a fixing base to obtain an effect of closely combining, a convex hook is provided on a handle, and a convex column is provided on a piston. When the liquid injection is completed, the cylinder hooks the needle tube fixing base and retracts it into the cylinder body, the fixing base and the needle tube are inclined, and the needle tube is accidentally Prevents it from protruding outside the body and achieves extremely favorable convenience of use and safeguarding effect.
[Selection] Figure 1

Description

  The present invention relates to an improvement in the safety structure of a syringe structure.

  Known chemical syringes have two treatment methods in which the needle tube may accidentally stab a person when the injection is completed: (1) The needle tube is manually pulled away from the cylinder, which is inadvertently mistaken. May stab you. (2) The needle tube is pushed into the cylinder, which may inadvertently puncture when the needle tube is taken out of the cylinder again. In other words, all known methods can accidentally stab people, and their safety is not the best.

JP-T-2006-516453

The purpose of the invention is:
First, the needle mounting base and the fixing base for combining and fixing the needle tube are designed so that the fixing base has screw teeth and is screwed with the needle mounting base, thereby achieving an effect of close combination.
Second, a hook piece is provided at the entrance of the fixed base central hole, and a convex hook is provided on the handle. When the chemical injection is completed, the hook hooks the hook piece, and the handle retracts the fixed needle tube into the cylinder. , Forming the effect of preventing the needle tube from accidentally stinging a person.
The third, the piston end face of the handle front end is provided with a convex column, the positioning base is pushed by the convex column to form an inclined shape, the needle tube also forms an inclined shape, and it is pressed into the cylinder again and pushed out by mistake. Get the effect of preventing.
The four, the cylindrical body, and the fixing base are provided with convex teeth that mesh and fix each other, and the effect of preventing the fixing base and its needle tube from spinning idle is obtained.

As shown in FIGS. 1, 2, 3, and 4, the present invention comprises a cylindrical body 10, a fixed base 12, a needle mounting base 19, a needle tube 18, a handle 20, and a piston 23 that are combined into one body; The front end of the handle 20 has a convex portion 21 and is combined with a piston 23. The front end of the piston 23 is provided with a convex column 24;
The fixed base 12 is provided with a fixed pipe 13, and has a leakage prevention frame 120 on the outer periphery thereof. A fixed wall 14 is provided on the outer surface of the fixed pipe 13, and an inner wall of the fixed wall 14 is provided on the outer wall. The needle mounting base 19 of the needle tube 18 is provided with a convex edge 190, the needle mounting base 19 is fitted between the fixed wall 14 and the fixed pipe 13, and the needle mounting base 19 convex edge 190 is Closely screwed with the screw teeth 140 of the fixed wall 14;
A hook 22 is provided at the head of the convex portion 21 of the handle 20, and a hook piece 15 is provided at the upper end opening of the fixed tube 13 of the fixed base 12. When the drug solution injection is completed, the hook 22 can be inserted into the fixed tube 13, the hook 22 engages with the hook piece 15, and the fixed base 12 is retracted by the operation of pulling out the handle, thereby bringing the needle tube 18 into the cylindrical body 10. Can be stored.
Convex teeth 11 are provided on the inner wall of the front end of the cylindrical body 10, and corresponding convex teeth 16 are provided on the outer periphery of the fixing base 12, so that the fixing base 12 and the convex teeth 16, 11 of the cylindrical body 10 are mutually connected. To prevent rotation of the fixed base;
A filling tube 17 is provided in the fixed tube 13 of the fixed base 12, and the space inside the fixed tube 13 can be reduced by the filling tube 17, and the residual amount of the chemical solution can be reduced.

The present invention has the following advantages:
(1) The medicinal solution injection is completed, and the hook 22 of the handle 20 and the hook piece 15 of the fixing base 12 of the needle tube 18 are hooked to form the effect of storing the needle tube 18 in the cylinder 10 in a simple and convenient manner.
(2) Even if the convex column 24 of the piston 23 is in an eccentric position and the fixing base 12 and the needle tube 1 are inclined, the needle tip is held against the cylinder body wall and pushed again even after the injection needle is stored and the piston is pushed again. Achieve the effect of preventing it from coming out, improve the safety protection.
(3) Convex teeth 11 and 16 with which the cylindrical body 10 and the fixing base 12 are engaged with each other are provided to fix the needle tube 18 so that it does not rotate during injection.
(4) The filling tube 17 is provided in the fixed tube 13 of the fixed base 12, and the hole space of the fixed tube 13 is reduced, the residual amount of the chemical solution is reduced, and the effect of injecting the chemical solution into the human body as much as possible is obtained.
(5) The combination of the needle mounting base 19 and the fixing base 12 of the needle tube 18 is provided with the screw teeth 140 and the convex edge 190 and screwed together, and can be assembled conveniently, and a tight and leak-free effect can be obtained.

Mode of Use of the Present Invention First, the needle mounting base 19 of the needle tube 18 is screwed onto the screw 140 of the fixing wall 14 of the fixing base 12 and fixed to the cylinder, and a medical solution is injected as shown in FIG. When the injection of the chemical solution is completed and the hook 22 of the convex portion 21 of the handle 20 is inserted into the hole of the fixed tube 13 and engages with the hook piece 15 in the state shown by the solid line in FIG. 3, the handle 20 is retracted. The safety effect of preventing the needle tube 18 from piercing a person is achieved by retracting the needle tube 18 of the needle mounting base 19 with the fixed base 12 into the cylinder. Further, as shown in FIG. 4, when the needle tube 18 and its fixing base 12 are retracted into the cylinder, the convex column 24 provided at the eccentric position of the end face of the piston 23 maintains the fixing base 12 in an inclined state. For this reason, even if the piston is pushed into the cylinder again, the tip of the needle tube 18 comes into contact with the convex teeth 11 on the inner wall of the cylinder 10 and is fixed. Accordingly, even if the handle is pushed wrongly, “the needle tube 18 is pressed by the convex teeth 11”, so that the effect of preventing the needle tube 18 from accidentally coming out of the cylinder 10 again is achieved.

In the present invention, preferred embodiments have been disclosed as described above, but these are not intended to limit the present invention in any way, and anyone who is familiar with the technology has an equivalent scope that does not depart from the spirit and scope of the present invention. Of course, various fluctuations and hydration colors can be added.

It is the three-dimensional decomposition and local sectional view of the present invention. It is combination sectional drawing of this invention. It is sectional drawing of the state which hooked the fixing stand of this invention. It is explanatory drawing in which the needle tube of this invention is accommodated in a cylinder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cylindrical body 11 and 16 Convex tooth 12 Fixing base 13 Fixed pipe 14 Fixed wall 140 Screw tooth 15 Hook piece 17 Filling pipe 18 Needle pipe 19 Needle mount 20 Handle 21 Protruding part 22 Hook 23 Piston 24 Convex pillar 120 Leak prevention frame

Claims (5)

It consists of a cylinder that contains the chemical, a fixing base, a needle mounting base, a needle tube, a handle, and a piston.
Provide a convex part that penetrates the piston at the front end of the handle and form a hook at the tip,
Provide a convex column at the eccentric position of the piston front end,
After using the needle tube attached to the fixed base via the needle mounting base and fitting the fixed base to the tip of the cylinder and assembling it, the hook at the tip of the convex part at the front end of the piston is engaged with the fixed base. When the needle tube of the fixing base and the needle mounting base is retracted into the cylindrical body by the operation of pulling out, the needle tube of the fixing base and the needle mounting base is inclined by hitting the convex column provided at the eccentric position of the piston,
A syringe, wherein the needle tube is prevented from coming out of the cylinder again by abutting against a convex portion provided on the circumferential wall of the cylinder. A fixed tube is provided in the fixed base and a fixed wall is provided outside the fixed tube,
A screw is provided on the inner side of the fixed wall, and a convex edge is provided on the edge of the needle mounting base to which the needle tube is attached. By inserting the needle mounting base between the fixing wall and the fixed pipe, the convex edge is screwed to the fixing wall. The syringe according to claim 1, wherein the syringe is closely screwed with the syringe. A hook is provided at the head of the convex portion of the handle, a fixing tube is provided in the fixing base, and a hook piece is provided in an opening formed at the upper end of the fixing tube. The syringe according to claim 1, wherein the needle tube is accommodated in the cylinder by inserting the needle into the cylinder, engaging the hook with the hook piece, and retracting the fixing base into the cylinder by an operation of pulling out the handle. By providing convex teeth on the inner wall of the front end of the cylindrical body and providing corresponding convex teeth on the outer periphery of the fixed base, the convex teeth of the fixed base and the cylindrical body mesh with each other to prevent the fixed base from rotating. The syringe according to claim 1. The syringe according to claim 1, wherein a filling tube is provided in the fixed tube of the fixed base to reduce a space in the fixed tube and reduce a residual amount of the drug solution.

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