JPH0838560A - Injection needle remover - Google Patents

Abstract

PURPOSE:To enable the removal of a needle from an injector quickly and simply by a method wherein a circular opening is formed at the center of a lid member of a needle housing part to mount a top disc rotatably and an outer cylinder of an injector is inserted into the top disc to hold a needle on a removing structural body attached on the rear of the top disc. CONSTITUTION:An injector with an injection needle used to sample blood is inserted into an injector receiving part 28 of an injection needle remover 10, a base part of the injection needle is inserted into a hole of the top disc 26 and a removing structural body 20 is held with a pair of jaws 34 and 36 composing a removing structural body 20. Then, the top disc 26 is turned with the injector as handle. Thus, the base part of the injection needle held with the first jaw 34 and the second jaw 36 is turned to let the needle off the injector. Then, a first cam part 40 is driven and a second cam part 42 causes a cam driven protrusion 72 formed on an arm 38 of the first jaw 34 to be driven. As a result, the jaw moves and releases the needle held to be housed into a needle housing section 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a needle removal device, and more particularly to a device for removing the needle from a vacuum blood sampling syringe.

[0002]

Blood tests are performed clinically for the diagnosis of almost any disease. For this blood test, blood is usually collected from a vein using a syringe. After blood collection, the used needle is removed from the syringe and discarded.

In removing the injection needle, a doctor or a nurse often accidentally injures his / her finger or the like with the needle, which causes the pathogen contained in the collected blood to Risk of infectious disease.

In particular, recently, a vacuum blood collecting device has been used which is composed of a glass suction cylindrical member whose inside is evacuated and an injection needle screwed to a syringe.

In this vacuum type blood sampler, since the injection needle is screwed to the blood sampler, it takes a lot of time to remove the needle after blood collection, and there is a high possibility of causing the above-mentioned accident. .

[0006]

In view of the above-mentioned problems, an object of the present invention is to provide a device capable of removing an injection needle from a syringe without touching the injection needle. .

It is a further object of the present invention to provide a device that allows simple and rapid needle removal from a syringe without requiring special skill and skill to operate.

[0008]

An injection needle removing device of the invention for solving the above problems is a needle removing section and a needle accommodating section of a syringe, and the needle removing section is detachably attached to the needle accommodating section, Moreover, it is composed of a cylindrical lid member having a circular opening in the center, a top disc mounted to rotate in the opening of the lid member, and a removal structure attached to the back surface of the top disc. And a syringe receiving portion for inserting the outer cylinder of the syringe, in which the base of the injection needle is screwed and fixed to the top disc, and the removal structure is formed at the tip of the L-shaped arm. A first jaw, a first cam portion and a second cam portion branched into three branches, and a third cam portion having a second jaw, and the first jaw Grasp the base of the needle of the syringe inserted in the syringe receiving part with the second jaw So that both of them are in the closed position, a rotation frame that mounts the removal structure so that it can rotate in the opening of the lid member, and a cylindrical shape that fixes the rotation frame to the lid member. Provided on the inner surface of the peripheral wall of the supporting and fixing frame so that the supporting and fixing frame having the peripheral wall and the first and second jaws can be brought into contact with the first cam portion to move the first and second jaws to the open position. And a cam drive shoe.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior to describing the preferred embodiment of the present invention in detail with reference to the drawings, a vacuum blood collecting device most suitable for using the needle removing device of the present invention will be outlined. The commonly used vacuum blood collection device is
Because its structure is quite similar to a normal syringe,
Hereinafter, it will be described as "syringe A".

As shown in FIG. 17, the syringe A has an outer cylinder B.
And an inner cylinder C to be inserted into the outer cylinder B and an injection needle D attached to the tip of the outer cylinder B.

The inner cylinder C is a container for collecting blood by a vacuum suction force, and its opening end is sealed with a cap E made of rubber or the like, and the inside is provided with a vacuum.

The needle D has a base F which is screwed into and attached to the outer cylinder B of the syringe A.
Has a second needle G extending therein.

When using this syringe to collect blood from a patient, the needle tip of the injection needle D fixed to the outer cylinder B is pierced into, for example, the vein of the patient's arm, and then the vacuum inner cylinder C is connected to the outer cylinder B. Insert inside. Then, since the second needle G extending into the outer cylinder B penetrates the cap E of the inner cylinder C, the blood of the patient is very easily sucked. After blood collection, the inner cylinder C must be taken out, and the injection needle D must be removed and replaced with a new needle.

A preferred embodiment of the injection needle removing device of the present invention will now be described in detail with reference to the drawings. As shown in FIG. 1, the injection needle removing device 10 of the present invention is
It is composed of a cylindrical needle removing portion 12 and a needle accommodating portion 14, and the needle removing portion 12 is screwed into the needle accommodating portion 14 so as to be integrated.

The needle removing section 12 has a circular opening 16 at the center of the top.
With a lid member 18 and a removal structure 2 rotatably mounted in the opening 16 of the lid member 18.
It consists of 0's. To attach the lid member 18 to the needle accommodating portion 14 (preferably made of a transparent material so that the inside can be seen), screws provided on the inner wall of the skirt portion 22 of the lid member 18 and the upper outer wall of the needle accommodating portion 14 are attached. A screw groove 24 for fitting with is formed (FIG. 12).

The removal structure 20 comprises a top disc 26, as shown in FIG. The disc 26 is provided with a cylindrical syringe receiving portion 28 protruding upward to insert the outer cylinder B of the syringe A at one peripheral edge thereof. At the center of the syringe receiving portion 28 of the top disc 26, a hole 30 for receiving a base portion F for attaching the injection needle D to the syringe A is provided (FIGS. 2 and 16).

The removal structure 20 includes a back surface 32 of the top disk 26.
And has a first jaw 34 (FIG. 3) and a second jaw 36 (FIG. 4) that cooperatively hold the base F of the injection needle D in the closed position. The first jaw 34 is formed at the tip of the L-shaped arm 38, and the second jaw 36 is a first cam portion 40 branching into three branches, a second cam portion 42,
And a third cam portion 44.

The opposing inner surfaces of the first and second jaws 34, 36 are such that when both are closed, the syringe receiving portion 28 of the disc 26.
The needle D of the syringe A inserted into the
Are formed on the mating portions 46 and 48 for receiving and holding the disc and are attached to the back surface 32 of the disc 26 so as to be aligned with the holes 30 of the syringe receiving portion 28 of the disc 26. for that reason,
As shown in FIG. 7, the L-shaped jaw support member 5 is arranged so as to extend in parallel from the back surface 32 of the disk 26 at a predetermined interval.
0 is fixed to the back surface 32 of the disk 26.

Upright arm base 5 of L-shaped support member 50
As shown in FIG. 7, 2 is fixed to the disk 26 by screwing, and the front end of the support member 50 extending in parallel with the disk 26 is fixed to the column 54 fixed to the disk 26 with screws.

The first jaw 34 and the second jaw 36 are connected to the disk 26.
In order to attach the jaw member 34 to the back surface 32 of the L-shaped jaw support member 50, the jaw members 34 and 36 are combined as shown in FIG.
The upper end of the pivot 56 protruding upward from the other end of
Of the L-shaped arm 38 by fitting the lower end of the pivot shaft 56 into the bearing hole 59 (FIG. 6) provided in the jaw support member 50 so that the arm 38 can be rotated. Can be attached to. In order to restrict the movement of the first jaw 34 and restore the original position, the first jaw 34
One end of the spring 62 is attached to the protrusion 60 at the end of the
The other end is fixed to the protrusion 64 provided on the back surface 32 of the disk 26 so that the longitudinal axis of 2 is inclined at about 45 degrees (FIGS. 14 and 15).

The second jaw 36 is arranged on the first jaw 34 in an overlapping manner, and is composed of a first cam portion 40, a second cam portion 42 and a third cam portion 44. A pivot 66 is provided at the center of the trifurcation, the upper end of which is fitted into a bearing hole 68 provided on the back surface of the disc 26, and the lower end of the pivot 66 is fitted into a bearing hole 70 provided in the jaw support member 50. Put on and assemble.

As will be described later, the first cam portion 40 branching into three branches is provided when the syringe A is inserted into the syringe receiving portion 28 of the disc 26 and the disc A is rotated using the syringe A as a handle. First, the removal structure 20 is driven by contacting the cam drive shoe 104 (FIG. 10) provided on the inner surface of the peripheral wall 94 of the hollow supporting and fixing frame 90, which is a constituent member.

A cam follower 72 for contacting the second cam 42 is provided at the center of the L-shaped arm 38 of the first jaw 34, and the second jaw member 36 is rotated. Causes the first jaw member 34 to rotate.

On the back surface 32 of the top disc 26, the removal structure 20 assembled as described above is placed on the lid member 18.
It is mounted so that it can rotate in the opening 16 of the.
The mounting means is composed of a hollow rotating frame 74 (Figs. 8 and 9) and a hollow supporting and fixing frame 90 (Figs. 10 and 11).

The hollow rotary frame 74 comprises a flange 76 and a peripheral wall portion 78 extending upward from the flange 76. The peripheral wall portion 78 is formed with an opening portion 80 through which the first cam portion 40 can project radially outward from the peripheral wall portion.

The rotary frame 74 is attached to the top disc 26 so as to rotate together with the top disc 26. That is,
For this reason, stepped notches 82 and 84 are formed in the peripheral edge of the disk 26 at positions directly opposite to each other, and the rotary frame 7
4, the cutouts 82, 8 of the disc 26 are provided on the top of the peripheral wall 76.
4 (FIG. 2), the protruding connecting portions 86 and 88 are provided so that the cutout portions 82 and 84 and the protruding connecting portions 86 and 88 are engaged with each other.

As shown in FIGS. 10 and 11, the supporting and fixing frame 90 is composed of a cylindrical upper flange 92 and a substantially cylindrical peripheral wall 94, and the flange 76 of the rotary frame 74 is shown in phantom lines in FIG. As shown by, it is placed on the peripheral edge portion 96 of the bottom of the supporting and fixing frame 90, and is fitted so as to be rotatable inside the supporting and fixing frame 90. Moreover, three leg members 98 extending downward from the lower surface of the flange 76 are provided so that the rotary frame 74 incorporated in the supporting and fixing frame 90 cannot escape from the supporting and fixing frame 90, and the lower end thereof is One-sided protrusion 1
00 to contact the bottom edge 102 of the peripheral wall 94 of the supporting and fixing frame 90 (FIG. 9).

On the inner surface of the peripheral wall 94 of the supporting and fixing frame 90, a cam drive shoe 104 for driving the above-mentioned first cam portion 40.
To provide.

As described above, the top disc 26 to which each component of the needle removing portion 12 is attached is fixed to the rotating frame 74, and this is fitted to the supporting and fixing frame 90 to cover the lid. The support fixing frame 90 is fixed to the member 18.

As shown in FIGS. 12 and 13, the lid member 1
The fixing protrusions 106 and 108 are provided at appropriate positions on the back surface of the cover 8, and the connecting slot 110 is provided at the corresponding position of the upper flange 92 of the support fixing frame 90. By engaging the both, the lid member is formed. The support fixing frame 90 can be fixed to 18.

In a preferred embodiment of the present invention, each of the above-mentioned components is made of hard synthetic resin, and the elasticity of the material is used for fitting or assembling. However, any suitable means such as gluing or the like can be used if necessary.

Since the injection needle removing device 10 of the present invention is constructed as described in detail above, for example, after blood is collected from a patient by using a vacuum type blood collecting device (syringe A), it is removed from the outer cylinder B. The inner cylinder C filled with blood is taken out, and the syringe A having the needle D screwed therein is inserted into the syringe receiving portion 28 of the needle removing device 10. Then, the base F of the injection needle D attached to the syringe A is the top disc 26.
It is gripped by a first jaw 34 and a second jaw 36 (FIG. 14) which are aligned below hole 30 and are closed so that they are always in contact by the action of a spring 62.

Therefore, the disc 2 is used with the syringe A as a handle.
When 6 is rotated clockwise, the rotary frame 74 is rotated clockwise together with the disc 26. According to the rotation, the base portion F of the injection needle D grasped by the first jaw 34 and the second jaw 36 is disengaged from the syringe A.

When the first cam portion 40, which is branched into three branches, comes into contact with the cam drive shoe 104 during the rotation of the disk 26, the first cam portion 40 is driven and the second cam portion 40 is driven as shown in FIG. The cam portion 42 of the L-shaped arm 3 of the first jaw 34
8 drives the cam follower 72 to move the first jaw 34, and the first jaw 34 and the second jaw 36 are opened due to the pulling action of the spring 62, and the injection needle D is the needle accommodating portion 1
Drop into 4

In the present invention, in consideration of the case where the needle D does not drop for some reason, means for positively opening the first jaw 34 and the second jaw 36 can be provided. As shown in FIG. 16, this opening means comprises a push button 112 and a swing member 114 for driving the third cam portion 44. The push button 112 is provided with a dish plate 118 that protrudes upward from the disc 26 through a button hole 116 provided in the top disc 26 and does not come out of the disc 26.

The swinging member 114 has an end portion 120 for supporting the dish portion 118 of the push button 112 from below and the third cam portion 4.
4 and a drive end 122 having a slope contacting the slope 4 of the upper disk 26, and is pivotally attached to a column 126 provided on the back surface 32 of the top disk 26 by a shaft 124 provided at the center thereof.

When the push button 112 is pressed, the swing member 11
4 is pushed down and the cam drive end 122 is pushed up in the opposite direction to move the third cam portion 44 inward, and the cam driven projection of the L-shaped arm 38 of the first jaw 34. The child 72 is driven by the cam portion 42 to forcibly open the first jaw 34 and the second jaw 36, and the injection needle D held between them is dropped.

[0038]

As has been described in detail above, the needle removing device of the present invention can be fully understood by a doctor when removing a needle from a syringe after treating a patient with the syringe. Alternatively, since an operator such as a nurse does not need to touch the injection needle at all, there is no danger of being injured by the injection needle and infection of pathogenic bacteria can be prevented.

Further, in the device of the present invention, the needle of the syringe is immediately inserted by the simple operation of inserting the outer cylinder of the syringe with the needle still attached into the syringe receiving portion and operating the syringe as a handle. Since it can be removed, it is efficient and it is also easy to dispose of all used injection needles accumulated in the needle removal section at once.

[Brief description of drawings]

FIG. 1 is a perspective view showing an injection needle removing device of the present invention.

FIG. 2 is a plan view showing the back surface of the top disc.

FIG. 3 is an enlarged plan view showing a first jaw and its L-shaped arm.

FIG. 4 is an enlarged plan view showing a second jaw and a cam portion branched into three arms.

FIG. 5 is an enlarged plan view showing a combination of a first jaw and a second jaw.

FIG. 6 is a plan view showing the back surface of the top disc for explaining the components for assembling the needle removal structure.

7 is a side view of the components shown in FIG. 6 viewed in the direction of arrow VII.

FIG. 8 is a plan view of a rotating frame.

9 is a cross-sectional view of the rotary frame as seen in the direction of the arrow along the line IX-IX in FIG.

FIG. 10 is a plan view of a supporting and fixing frame.

11 is a sectional view taken along line XI-XI of FIG. 10 and viewed in the direction of the arrow.

12 is a cross-sectional view of the lid member as seen in the direction of the arrow along the line XII-XII in FIG.

FIG. 13 is a bottom view of the lid member.

FIG. 14 is a schematic diagram showing the first and second jaws in the closed position to illustrate the operation of the device of the present invention.

FIG. 15 is a schematic diagram showing the first and second jaws in an open position to illustrate the operation of the device of the present invention.

FIG. 16 is a schematic view illustrating the structure of a push button that opens the first jaw and the second jaw.

FIG. 17 is a schematic diagram illustrating the structure of a syringe suitable for removing a needle with the needle removing device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Injection needle removal device 12 Needle removal part 14 Needle accommodation part 16 Opening 18 Lid member 20 Removal structure 22 Skirt part 24 Screw 26 Top disc 28 Syringe receiving part 30 Hole of syringe receiving part 28 32 Back surface of top disc 26 34 First jaw 36 Second jaw 38 L-shaped arm 40 First cam portion 42 Second cam portion 44 Third cam portion 46, 48 Jaw meshing portion 50 Jaw support member 52 Jaw support member base 54 pillars 56 pivots 58, 59 bearing holes 60 first jaw protrusions 62 springs 64 protrusions on the back surface of the disc 26 66 pivots 68 bearing holes 70 bearings of the shaft 66 72 cam driven protrusions 74 rotating frame 76 flanges 78 Peripheral wall 80 of rotating frame 74 Opening portion 82 of peripheral wall 78 82, 84 Notch portion of top disc 26 86, 88 Projecting connection portion of rotating frame 74 90 Support fixing frame 92 Above support fixing frame 90 Flange 94 Peripheral wall of support fixing frame 90 96 Bottom peripheral edge of support fixing frame 90 98 Leg member 100 of rotating frame 74 Outward protruding portion of leg member 98 102 Bottom edge of support fixing frame 90 104 Cam drive shoes 106, 108 fixing Protrusion 110 Connection slot 112 Push button 114 Swing member 116 Button hole 118 Dish plate 120 End of swing member 114 122 Drive end of swing member 114 Shaft 126 of swing member 114 For swing member support Support A A Syringe B Outer cylinder C Inner cylinder D Injection needle E Cap F Base of injection needle G Second needle

Claims (3)

[Claims] 1. A needle removing portion and a needle accommodating portion of a syringe, a cylindrical lid member detachably attached to the needle accommodating portion, and having a circular opening in the center, and the lid member. Of the top disc mounted to rotate in the opening and a removal structure attached to the back surface of the top disc, and the base of the injection needle was screwed and fixed to the top disc. A syringe receiving portion for inserting the outer cylinder of the syringe is provided, a first jaw formed with the removal structure at the tip of an L-shaped arm, a first cam portion branched into three branches, and a second And a third cam portion having a second jaw, and the injection of the syringe inserted into the syringe receiving portion by the first jaw and the second jaw. A spring that puts the needle in the closed position so that it holds the base of the needle, and the removal structure is attached to the lid. A rotating frame mounted so as to be rotatable in the opening of the material, a supporting and fixing frame having a cylindrical peripheral wall for fixing the rotating frame to the lid member, the first jaw and the second jaw And a cam drive shoe provided on the inner surface of the peripheral wall of the support and fixing frame so as to come into contact with the first cam portion in order to move the needle to the open position. 2. The needle removing device according to claim 1, wherein the syringe having the top disc inserted in the syringe receiving portion is rotated as a handle. 3. A button hole is provided in the top disc, a push button is inserted into the button hole, and a cam drive end portion drives the third cam portion by pushing down the push button. 2. An injection needle removing device according to claim 1, further comprising a swinging member adapted to operate.