JPS63123451A - Crusher for injector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a crushing device for shearing and crushing the tips or needles of used syringes in order to prevent them from being reused.

"Prior Art and its Problems" In recent years, many syringes made of synthetic resin have been used for medical purposes in hospitals and other medical facilities. This synthetic resin syringe is disposable, so used syringes must be disposed of to prevent them from being used illegally by stimulant drug patients. In the case of syringes, used needles also need to be disposed of in the same way.

In order to dispose of such syringes or needles, various syringe crushing devices have been proposed. The basic structure of these crushing devices is that a shear receiver blade is brought into contact with a rotating shear blade, and the tip of a syringe is applied to both blade edges to shear and crush the tip.

However, in conventional crushing devices, only the cutting edge of the shear receiving blade or the rotating shear blade is in line contact, so if you try to crush it by applying the tip of the syringe to this line contact position, the syringe was thrown up by the rotating shear blade, and a satisfactory shearing effect could not be obtained. Furthermore, even when a syringe is inserted and applied to the cutting edge while being pressed, considerable resistance is generated by the rotational force of the rotating shearing blade, making it impossible to insert the syringe satisfactorily between the cutting edges, resulting in a situation where it is difficult to crush the syringe.

[Object of the Invention] An object of the present invention is to provide a syringe crushing device M that has no insertion resistance of the syringe and does not cause the splashing phenomenon.

"Summary of the Invention" In order to achieve the above object, in the present invention, a shear receiving blade provided close to the contact position with the cutting edge of a rotating shearing blade is a circular hole blade that is inserted up to the hub part of the tip of the syringe. It is characterized in that a conical recess having a slope along the contour of the head of the tip of the syringe is formed in the circular hole blade.

“Embodiments of the invention” An embodiment of the present invention will be described below based on the drawings.

The machine housing 11 has a rotating shaft 12 connected to a drive source (not shown).
A rotary shearing blade 13 is attached to the rotating shaft 12. The zero-rotating shearing blade 13 is rotated in the direction of the arrow by a drive source. A shear receiving blade portion 14 is disposed on the machine casing 1 in close proximity to the contact position with the cutting edge of the rotary shearing blade 13.

The shear receiving blade part 14 is a rotating shear blade 13 that rotates in the direction of the arrow.
The distal end portion of the syringe 30 is pinched between the cutting edge of the syringe 30 and the distal end portion of the syringe 30 is sheared and crushed. The shear receiving blade portion 14 includes a circular hole blade 15 formed in the vicinity of the cutting edge of the rotating shear blade 13;
It has a concave groove 16 overlapping the circular hole blade 15 and formed on the contact surface side with the cutting edge of the rotary shearing blade 13, and a conical recess 17 connected concentrically with the circular hole blade 15. Round hole blade 15
The center line is located at a position perpendicular to the axis of the rotating shaft 12, and is formed to be large enough to allow the hub portion 31 of the syringe 30 to be inserted therein. The blade thickness t of the circular hole blade 15 is set to a thickness that does not interfere with shearing and crushing the hub portion 31 of the syringe 30. The concave groove 16 is formed in an arc shape corresponding to the circle drawn by the rotation locus of the rotary shearing blade 13, and its groove width W is set to be equal to or slightly larger than the inner diameter of the circular hole blade]5. . By setting the groove width W of the concave groove 16 as described above, the shearing efficiency by the cutting edge of the rotary shearing blade 13 and the circular hole blade 15 is increased. Further, the concave seat 17 holds the syringe 30 in close contact when the distal end portion of the syringe 30 is sheared and fractured, and has a tapered surface. That is, the concave seat] 7 has a slope of its tapered surface 18 that is slightly different from the slope of the head outline of the tip of the syringe 30, so that when the syringe 30 is held, the head of the syringe 30 comes into close contact with the tapered surface 18. It looks like this.

The shear receiving blade part 14 is configured to be movable and adjustable in the direction shown by the arrow in FIG. this is,
This is for finely adjusting the contact position between the cutting edge of the rotary shearing blade 13 and the circular hole blade 5, and is performed by an adjusting screw 19.

The machine casing 11 in which the above-mentioned device is installed is covered with a cover 20. An insertion port 21 for a syringe 30 is opened in the front surface of the cover 20 at a position corresponding to the concave seat 17, and a protective cover 22 is attached to the insertion port 21 for safety reasons. In addition, at the bottom of the cover 20, there is a machine housing 1.
A pull-out processing case 24 connected to the opening at the bottom of the machine is attached to temporarily collect the crushed material sheared by the device. Incidentally, numeral 25 is a charging cylinder exclusively for the injection needle 32.

Next, how to use the device of the present invention will be explained.

The contact position of the shear receiver 14 with the cutting edge of the rotary shear blade 13 is finely adjusted in advance using the adjustment screw 19.The rotary shear blade 13 is rotated by a drive source, and the used syringe 30 is inserted into the injection needle 32. When the injection needle 32 is inserted into the recessed seat 17 through the insertion port 21 from the opposite direction, the tip of the injection needle 32 first enters the circular hole blade 15 and is sandwiched between the cutting edge of the rotary shearing blade 13 and the circular hole blade 15. At this time, it is thought that a force is induced in the injection needle 32 in the direction of the rotating shaft 12 due to the combined action of the circular hole blade 15 and the rotation of the cutting edge of the rotary shearing blade 13, and a suction action is exerted on the injection needle 32. . Due to this suction action, the injection needle 32 is held between the rotating shearing blade 13 and the circular hole blade 15 with little resistance without being thrown up by the rotating shearing blade 13, and is instantly sheared and broken. When the syringe 30 is inserted as it is, the head of the syringe 30 comes into contact with the tapered surface 18 of the concave seat 17, and the syringe 3o is stably held by the concave seat 17, so that the hub portion 31 becomes a rotary shearing blade. 13 and the circular hole blade 15, and is easily sheared and crushed. The sheared debris falls into the processing case 24 and is collected. In addition, to shear only the injection needle 32, by placing the tip of the dedicated injection tube 25 facing the circular hole blade 15 and pouring the injection needle 32 into this injection tube 25, the same suction effect as described above will work, and the injection The needle 32 is sheared off from the needle tip.

In addition, a well-known spray disinfection device may be arranged adjacent to the above device, and configured to automatically spray disinfectant onto the rotary shear blade 13, circular hole blade 15, and the crushed material when shearing and crushing is completed. is also possible.

"Effects of the Invention" As explained above, according to the device of the present invention, the shear receiving blade provided close to the contact position with the cutting edge of the rotating shearing blade,
Since the syringe tip is configured with a circular hole blade that is inserted up to the hub, when the syringe tip is inserted into the device, the rotary shear blade and the circular hole blade act in combination, and the main suction effect on the syringe is It was confirmed that it does. Therefore, the inserted syringe does not bounce up due to the rotational force of the rotary shearing blade, and the insertion resistance force is reduced, so that the syringe can be sheared and crushed reliably and easily.

Furthermore, in the present invention, a conical concave seat having a slope along the outer shape of the head of the syringe tip is connected to the circular hole blade, so that the head of the syringe tip comes into contact with this concave seat. Retained.

Therefore, ease of shearing and crushing is greatly facilitated.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the syringe crushing device according to the present invention, FIG. 2 is an enlarged view of the main part of FIG.
It is a view taken along arrow m in the figure. DESCRIPTION OF SYMBOLS 11... Machine housing, 13... Rotating shearing blade, 14... Shearing blade part, 15... Circular hole blade, 16... Concave groove, 17...
...concave seat, 18...tapered surface, 19...adjustment,
30--Syringe, 31--Hub portion, 32--Syringe needle. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) Equipped with a rotating shearing blade pivotally supported on the machine casing and a shear receiving blade disposed close to the contact position with the cutting edge of the rotating shearing blade, and the tip of the syringe is In a syringe crushing device that performs shear crushing, the shear receiving blade is formed into a circular hole blade that is inserted up to the hub portion of the syringe tip, and this circular hole blade has a slope along the outer shape of the head of the syringe tip. A syringe crushing device comprising a conical concave seat coupled with a concave seat.