JP3019500U - Medical needle removal device - Google Patents

Abstract

(57) [Summary] [Problem] To provide a medical needle removing device capable of safely and conveniently removing a needle from a syringe or a holder and storing the needle as it is in a container for disposal. [Structure] A main body 1 and a cylinder 3 penetrating the main body 1 and attached to the bottom of the main body 1 via a coil spring 9.
And a protrusion 5 that is coupled to the side surface of the cylinder 3, and a lever 6 that constitutes a hinge with the main body 1, and is a device for removing a medical needle. The lever 6 has an elongated hole at a substantially intermediate position thereof, and the pin 14 embedded near the tip of the protrusion 5 slides in the elongated hole as the cylinder 3 moves up and down. The claw 8 of the claw plate 7 protrudes from the hole 4 of the cylinder 3 into the cylinder as the claw plate 7 coupled to the tip of the lever moves downward with the downward movement of the cylinder 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a medical needle removing device for removing a used medical needle such as a medical injection needle or a blood collection needle from a syringe body or a holder.

[0002]

[Prior art]

 In recent years, it has been pointed out that AIDS and viral hepatitis may be infected by used injection needles and blood collection needles, and careful handling of them has been urged. In particular, medical staff must handle needles and blood sampling needles contaminated with the patient's blood on a daily basis, and it is no exaggeration to say that accidental needle sticks are a daily occurrence. In fact, AIDS infection is also occurring due to this.

Accidental needle sticks in medical practice often occur when the needle is capped again in an attempt to remove the needle from the syringe body. The details are as follows. First, in the case of an injection needle, as shown in FIG. 9, a new disposable injection needle has a needle cap covered with a resin, and the entire needle is sealed in a sterilized state. When using a needle, first unseal it, hold the needle with the cap attached, and attach the needle to the tip of the syringe body. Use after removing the cap after firmly mounting.

When the needle is removed from the syringe body after use, it is dangerous to leave the needle exposed, and the cap is put on the needle as shown in FIG. That is, this is called a recipe. After that, remove the needle together with the cap and discard.

Next, the case of using a blood collection needle will be described. For blood collection, of course, a general syringe body and needle as described above may be used, but in many cases, a vacuum blood collection tube and a specialized blood collection needle therefor are used. The set is shown in FIGS. Fig. 11 shows a vacuum blood collection tube, which has a negative pressure inside, and the pressure is adjusted so that a necessary amount of blood is sucked and the suction is automatically stopped. FIG. 12 shows a holder, which has a small hole at its front end, and a screw 101 is cut inside the small hole, to which a dedicated blood collecting needle to be described later is attached. FIG. 13 shows a blood collection needle, which is covered with caps from both ends. Further, FIG. 14 shows the cap removed before and after the blood collection needle.

A needle 202 on the side on which the vacuum blood collection tube is attached, which is opposite to the needle 201 for puncturing a patient, is covered with rubber. In addition, as shown in the drawing, a screw 203 and a protrusion 204 for attaching to the holder are attached to the central portions of both needles. The protrusion 204 is adapted to engage with the protrusion 206 inside the cap 205 when the cap is attached. Explain how to use them.

First, the blood collection needle is taken out, the cap 207 on the side where it is screwed into the holder is removed, and the blood collection needle is attached to the holder. Then, the cap 205 is removed and a needle is inserted into the blood vessel of the patient. Even if the tip of the needle enters the blood vessel, since the needle 202 is covered with rubber as described above, blood does not flow out through the inside of the needle. Then take the vacuum blood collection tube, and its cap is still rubber, so push the bottom of the blood collection tube and push it into the holder as shown in Fig. 15. The needle penetrates the rubber of the blood collection tube and the rubber of the cap of the blood collection tube and pierces the inside of the blood collection tube.

At that time, the patient's blood is sucked into the negative pressure tube by a necessary amount and the inflow is automatically stopped. When the blood flow has stopped, pull out the blood collection tube from the holder. At that time, the rubber again covers the needle and the blood does not flow out. Then remove the needle from the patient. Then cap the needle again to remove it. That is, recap. Then, rotate the needle together with the cap, remove the needle from the holder, and discard.

As described above, when the needle is discarded, the necessity of recapping and discarding the needle has been emphasized so that the person who performs the subsequent processing is not in danger. However, in recent years, the method of treating infectious waste used for medical treatment has been strictly regulated by law, and a licensed operator must dispose of it. In other words, it is not possible for a contractor to cause a needle stick accident in the middle of the disposal work even if the needle is discarded as it is, and it should not be a treatment method that causes such an accident. Rather, it is clear that needlestick accidents of medical staff occur at the time of recap, and it is recommended to discard the needle without recap. The waste collection container of the contractor is also used so that the needle does not pop out during transportation.

Therefore, it is necessary to have a worker who can safely remove the uncapped needle from the syringe or the holder. Various devices have been devised for that purpose. What is currently on the market is, for example, one in which a needle attached to a syringe is inserted into a hole in a container and then hooked, or when the needle is inserted into the hole, the needle is melted electrically (eg, , Japanese Utility Model Publication No. 5-25627, etc.).

[0011]

[Problems to be solved by the device]

 However, in the above-mentioned method in which the needle is hooked and the needle is taken, when pulling the syringe forward, the container is lifted up in a light recovery container, and the container must be pressed by the other hand. Further, the pulling action to the front is an ergonomically inconvenient action. Furthermore, in the above-mentioned empty blood collection tube, the needle is fixed with screws, so the holder must be rotated by hand.

Further, in the method of electrically melting the needle, electric power is required to operate the device, and the device itself is very expensive and heavy. Furthermore, with this method, the needle on the side of the blood collection needle that punctures the vacuum blood collection tube cannot be dissolved.

An object of the present invention is to solve the above problems and provide a medical needle removing device capable of safely and conveniently removing a needle from a syringe or a holder and storing the needle as it is in a container for disposal. To do.

[0014]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a first medical needle removing device of the present invention comprises a main body, a cylinder penetrating the main body and attached to the bottom of the main body via a coil spring, and The lever includes a protrusion that is coupled to a side surface and a lever that forms a hinge with the main body, and the lever has an elongated hole at a substantially intermediate position thereof and is embedded near the tip of the protrusion as the cylinder moves up and down. Pin is configured to slide in the elongated hole, and the claw plate coupled to the tip of the lever moves from the cylindrical hole to the claw plate through the downward movement of the lever due to the downward movement of the cylinder. It is characterized in that the claws of the projecting part project inside the cylinder.

The first medical needle removing device of the present invention includes a main body, a cylinder penetrating the main body and attached to the bottom of the main body via a coil spring, and an outer periphery of the cylinder. A sleeve mounted so as to be vertically movable, a plate with a claw fixed to the lower end of the sleeve, a rack fixed to a sleeve on the side opposite to the plate with the claw, and fixed to a cylindrical portion to mesh with the rack A pinion and a rack fixed to the main body and meshing with the pinion are provided. With the downward movement of the sleeve accompanying the downward movement of the cylinder, the claw plate is pushed while being slid by the projection provided on the main body, and the claw plate is pushed. It is characterized in that the claws of the attached plate project into the inside of the cylinder through holes provided in the cylinder and the sleeve.

A second medical needle removing device of the present invention comprises a main body, a cylinder penetrating the main body and attached to the bottom of the main body via a coil spring, and a plurality of parts. The needle receiving portion has a cylindrical shape, the portion of which is axially attached to the upper end of the cylinder, and which has a cylindrical shape. Each of the constituent parts has a protrusion that meshes with the protrusion of the blood sampling needle, and at least one vertically elongated thin hole is provided in the ring, and the upper end of the hole is screwed just below the upper end of the cylinder. The screw supports the ring and limits the amount of vertical movement of the ring, and the cylinder has a spiral groove on the outer circumference, and the pin attached to the main body is fitted into the groove. It is rare, and is characterized by being configured to rotate and descend.

Further, in the second medical needle removing device, a disk is used instead of the annular ring, and a protrusion 52 for supporting the disk is provided on the needle receiving portion instead of the screw, and the upper surface of the main body is further provided. The medical needle removing device further includes an annular part that comes into contact with the lower surface of the disk when the cylinder is pushed down.

[0018]

【Example】

 The present invention will be described in detail with reference to examples. An example of the first medical needle removing device of the present invention is shown in FIGS. The device shown in FIG. 1 is a device for removing an injection needle from a syringe body. This device comprises a main body 1, a cylinder 3 penetrating the main body 1 and attached to the bottom of the main body 1 via a coil spring 9, a guide plate 2 coupled to the upper end of the cylinder 3, And a protrusion 5 that is coupled to the side surface of the cylinder 3. Here, the cylinder 3 can be attached to the main body 1 by fixing the coil spring 9 at the lower end 15 to the inside of the flange 17 of the cylinder 3 and at the upper end 16 to the bottom surface of the concave portion of the main body 1. The illustrated apparatus has a guide plate 2 which is connected to the upper end of the cylinder 3.

Further, the main body 1 has a concave portion in a direction perpendicular to the cylinder 3, and a lever 6 which is hinged to the bottom surface of the concave portion and constitutes a hinge is provided. The lever 6 has an elongated hole at a substantially intermediate position thereof, and a pin 14 embedded near the tip of the protrusion 5 slides in the elongated hole as the cylinder 3 moves up and down. Is configured.

The lower end of a plate 7 with a claw is connected to the tip of the lever 6, and the claw 8 of the plate 7 with a claw can be formed by bending the upper end. With the downward movement of the cylinder 3, the pin 14 pushes the lever 3 downward with the shaft attachment portion 13 as a fulcrum. With the downward movement of the tip of the lever 3, the claws 8 of the plate with claws 7 project into the inside of the cylinder from the holes 4 of the cylinder 3.

The coil spring 9 is installed so as to exert a force in a contracting direction. Therefore, in FIG. 1, the cylinder 3 is pushed upward, and the inner surface of the flange 17 of the cylinder 3 and the bottom surface of the main body 1 are pressed and stopped.

The guide plate 2 is provided for the purpose of easily inserting the tip of the injection needle into the cylinder 3. The inner diameter of the cylinder is preferably larger than the maximum diameter of the base of the injection needle with a proper margin.

Next, the method of using this device and the principle of its operation will be described. First, insert the needle still attached to the used syringe into the cylinder from above. Then, push down the syringe together. FIG. 2 shows a state in which the cylinder 3 is pushed downward so that the protrusion 5 and the lever 6 are parallel to each other. As is clear from FIG. 2, when the cylinder 3 is pushed downward, the protrusion 5 also moves downward because it is an integral part of the cylinder 3.

With this movement, the pin 14 slides in the elongated hole of the lever 6 while pushing down the lever 6, and the lever 6 rotates downward about the shaft attachment portion 13. Then, since the claw plate 7 is an integral part of the lever 6, it also rotates and descends downward. That is, the tip of the claw 8 comes down while entering the inside of the cylinder 3, but its speed is faster than the speed of the cylinder. The reason is that the lever 6 acts as a lever, so that if the pin 14 is located near the middle point of the lever 6, the descending speed of the tip portion 12 of the lever will be approximately twice the descending speed of the pin 14. .

As a result, the claw 8 descends at a speed about twice that of the cylinder 3. That is, a relative speed difference is generated between the cylinder 3 and the claw 8. In other words, if the cylinder 3 is pushed further downward from the state shown in FIG. 2, the claw 8 will be hooked at the base of the injection needle and removed from the syringe. The disengaged needle immediately drops down. When the syringe with the needle removed is lifted, the coil spring 9 causes the cylinder to rise and return to the original state of FIG.

A needle removing device of the same type as that shown in FIG. 1 can be realized by using a rack and pinion mechanism instead of the lever mechanism. FIG. 3 shows an example using the rack and pinion mechanism as an improved example of the first removing device of the present invention.

As shown in FIG. 3, there is a cylindrical portion 3 in the main body 1. In normal times, the cylindrical portion 3 is pressed upward by the coil spring 9. On the outside of the cylindrical portion 3, there is another cylinder having a length of about half of the cylindrical portion 3, and this cylinder is a sleeve 22 attached to the cylindrical portion 3 so as to be vertically movable. A plate 24 with a claw is fixed to the sleeve 22 at the lower end of the sleeve 22.

A rack 28a is fixed to the sleeve 22 on the side opposite to the side to which the plate with claws 24 is fixed. The rack 28 a meshes with the pinion 27, and the pinion 27 meshes with the rack 28 b fixed to the main body 1. The support column 29 that supports the pinion 27 is fixed to the cylindrical portion 3.

The plate with claw 24 has a claw 25, and the claw 25 projects into the cylinder through the holes 21 and 23 of the cylindrical portion 3 and the sleeve 22. The protruding operation is performed by pushing the plate 24 with the claws while the sleeve 22 is moved downward by the protrusion 26 provided on the main body 1.

In order for the device to operate smoothly, it is desirable to install a plurality of claw portions, racks and pinion portions drawn on the left and right sides of the drawing symmetrically around the cylindrical portion 3 or the sleeve 22. . The portion of the sleeve 22 not provided with the claw plate 24 and the rack and pinion portion is in contact with the main body 1, whereby the sleeve 22 or indirectly the cylindrical portion 3 is vertically supported.

Further, in the illustrated example, the guide plate 2 is provided on the upper end of the cylindrical portion 3 so that the needle can be easily inserted when the needle is inserted from above the cylindrical portion.

The method of use of this device is exactly the same as the device described above. That is, the injection needle that is still attached to the used syringe is inserted from above the cylindrical portion 3 and pushed downward as it is. Then, when the pushing force becomes stronger than the contracting force of the spring 9, the cylindrical portion 3 starts to lower. At that time, the pinion 27 is lowered together with the cylindrical portion 3, but since the pinion 27 meshes with the rack 28b fixed to the main body 1, the pinion 27 rotates and pushes down the rack 28a fixed to the sleeve 22. That is, the sleeve 22 lowers at a speed twice that of the cylindrical portion 3. At that time, the claw plate 24 fixed to the sleeve 22 is also lowered, but the claw plate 24 is pushed by the projection 26 and the claw 25 projects inside the cylindrical portion 3. As a result, similarly to the above-described device, the claw 25 is caught at the base of the inserted injection needle, and the injection needle is removed from the syringe.

Next, an example of the second medical needle removing device of the present invention is shown in FIGS. The device shown in FIG. 4 is a device for removing a screw-in type blood collecting needle. This device comprises a main body 31, a cylinder 32 penetrating the main body 31 and attached to the bottom of the main body 31 via a coil spring 37, and a plurality of parts, each of which is a shaft at the upper end of the cylinder. The needle receiving portion 33 is attached and has a cylindrical shape as a whole, and a circular ring 34 that can move up and down like a sleeve outside the cylinder 32 and the needle receiving portion 33.

Inside each part of the needle receiving portion 33, when the blood collecting needle is inserted into the device from above, there is a protrusion 38 that meshes with the protrusion 204 of the blood collecting needle shown in FIG. It is formed integrally with 33.

Further, the upper end of the protrusion 38 is inclined inward, so that when the blood collecting needle is inserted from above and pushed from above, a force is applied to the needle receiving portion 33 so as to open outward. The inner diameter of the cylinder 32 is made slightly larger than the maximum diameter of the central portion of the blood collecting needle, and the needle can be dropped through the central hole.

The needle receiving portion 33 is composed of a plurality of parts and has a cylindrical shape, as shown in FIG. In the example shown, it consists of four parts. Each of them forms a hinge with the cylinder 32 at the shaft attachment portion 39 and can be opened to the outside.

At least one vertically elongated narrow hole is provided in the circular ring 34, and as shown in FIG. 4C, a screw 42 is screwed by screwing the upper end of the hole directly below the upper end of the cylinder 32. It supports the ring 34 and limits the amount of vertical movement of the ring 34.

Further, a groove is formed in a spiral shape on the outer periphery of the cylinder 32, and the pin 35 attached to the main body 31 is fitted in the groove and is configured to be lowered while rotating.

The coil spring 37 is fixed at its lower end 40 to the inside 40 of the lower end flange of the cylinder 32, and at its upper end 41 to the bottom surface of the main body 31. The coil spring 37 has a contracting force and serves to lift the cylinder 32.

Next, the method of using this device and the principle of its operation will be described. First, the used blood collection needle attached to the holder is inserted into the device from above. At that time, the protrusion 38 of the needle receiving portion 33 meshes with the protrusion of the blood collecting needle. This is shown in FIG.

When the holder is further pushed down, the cylinder 32 and the needle receiving portion 33 are lowered together, but a spiral groove is engraved on the outer periphery of the cylinder 32, and the pin 35 is fitted into the groove. Since they are slipping in, they will roll down. At that time, the holder is held by hand so that it does not rotate, and by engraving the groove so that the cylinder rotates to the right when viewed from above, the needle automatically rotates and comes out of the holder. In the example shown, the pins are symmetrically provided at two places, and therefore two grooves are also carved. The cylinder is drawn so that it rotates up and down twice between the top and bottom. A commonly used blood collection needle is designed to come off within one and a half turns, so two turns are enough.

While the entire device is being pushed down, a force that pushes the needle receiving portion 33 outward acts, but since the circular ring 34 exists, the needle receiving portion 34 remains in the annular shape.

When the holder is further pushed down, the bottom of the ring 34 hits the main body and stops, but the cylinder 32 and the needle receiving portion 33 are pushed down without stopping. Then, since the upper portion of the needle receiving portion 33 is constricted and the upper end of the protrusion 38 is inclined inward, the needle receiving portion 33 opens outward as shown in FIG. If the inner diameter formed by the protrusions becomes larger than the maximum diameter of the central portion of the blood collection needle, the needle has already been removed from the holder and is pushed by the holder to drop vigorously. Figure 6 shows the moment when the needle just comes off and falls.

When the holder is removed, the cylinder 32 comes up by the coil spring 37. Further, the annular ring 34 is made of metal and is lowered by its own weight, and the needle receiving portion 33 is also closed to return to the original state of FIG.

In the apparatus shown in FIG. 4, it is considered that the portion protruding above the main body, that is, the total height is preferably as low as possible, but FIG. 7 shows an example in which this point is improved. A portion corresponding to the circular ring 4 shown in FIG. 4 is a flat disk 51 in FIG. In the normal state, the disk 51 is stopped at the position shown in the figure by the protrusion 52 provided on the lower portion of the needle receiving portion 33. Therefore, the needle receiving portion does not open even if it is pressed from above during use. However, when the needle receiving portion 33 is pushed down and comes down together with the cylindrical portion, the disc 51 is attached to the upper surface of the main body 31, and the disc 51 is also pushed up by hitting the annular component 53. The needle receiving portion 33 opens.

When the holder is lifted, the disc 51 also tries to be lifted up. However, by making the components of the protrusion 52 with magnets and the disc 51 made of steel, the disc 51 is kept until the protrusion 52 hits the lower face of the disc 51. Stop at the bottom and close the needle receiver. Moreover, since the disk 51 is kept horizontal during that time, this series of operations is smoothly performed. Also, since the lower part that functions as the sleeve in FIG. 4 can be omitted, the overall height can be reduced accordingly.

FIG. 8 shows an example in which the first device and the second device of the present invention are attached to a used needle storage box. An injection needle removing device 62 and a blood sampling needle removing device 63 are attached to the upper part of the storage box body 61. A cup 64 for accommodating the needle is housed in the main body 61.

When using this, one operation of holding the syringe with the needle attached or the holder for blood collection, inserting the needle into the device 62 or 63 from the upper side, and pushing down in any device is performed. All you have to do is Then, in any of the injection needle and the blood collection needle, the needle automatically comes off and falls down, and is housed in the cup 64. Once the cup 64 is fully filled with needles, the contained needles can be transferred to a larger container prepared by the vendor.

[0049]

[Effect of device]

 As described above, in the medical needle removing device of the present invention, the needle can be safely and conveniently used from the injector or the holder, that is, the used needle can be very easily used without touching the needle. The needle can be removed from the syringe body or holder, and the needle can be stored in a waste container as it is. In particular, pushing from the top pushes the device against the base and stabilizes the device, so there is no fear of operation. The storage box equipped with the device of the present invention does not require any power means, and is light and easy to carry to the bedside. In addition, the manufacturing cost is low and there is no need for maintenance.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a first device of the present invention.

FIG. 2 is a cross-sectional view showing a usage state of the device shown in FIG.

FIG. 3 is a cross-sectional view showing an improved example of the first device of the present invention.

FIG. 4A is a sectional view showing an example of a second device of the present invention. (B) is a plan view of the needle receiving portion of the device (A) seen from above. FIG. 3C is a side view showing an enlarged needle receiving portion of the device of FIG.

5 is a cross-sectional view showing a usage state of the device shown in FIG.

6 is a cross-sectional view showing a usage state of the device shown in FIG.

FIG. 7 is a partial cross-sectional view showing an improved example of the second device of the present invention.

FIG. 8 is a side view showing an example in which the device of the present invention is attached to a used needle storage box.

FIG. 9 is a perspective view of a new disposable injection needle.

FIG. 10 is an explanatory diagram showing a recap.

FIG. 11 is a perspective view showing a vacuum blood collection tube.

FIG. 12 is a perspective view showing a holder.

FIG. 13 is a perspective view showing a blood collection needle.

FIG. 14 is an explanatory diagram showing a state in which caps before and after the blood collection needle are removed. I will show you.

FIG. 15 is an explanatory diagram showing a state of collecting blood.

[Explanation of symbols]

 1 Main Body 2 Guide Plate 3 Cylinder 4 Hole 5 Protrusion 6 Lever 7 Claw Plate 8 Claw 9 Coil Spring 22 Sleeve 24 Claw Plate 25 Claw 26 Protrusion 27 Pinion 28a, 28b Rack 31 Main Body 32 Cylindrical 33 Needle Part 34 Ring 35 Pin 37 Coil spring 38 Protrusion 42 Screw

Claims (4)

[Scope of utility model registration request] 1. A body (1), a cylinder (3) which penetrates the body (1) and is attached to the bottom of the body (1) via a coil spring (9), and the cylinder (3). And a lever (6) forming a hinge with the main body (1), the lever (6) having an elongated hole at a substantially intermediate position thereof, and a cylinder (3). ), The pin (1) embedded near the tip of the protrusion (5)
4) is configured to slide in the elongated hole, and the claw plate (7) connected to the tip of the lever is moved by the downward movement of the lever (3) accompanying the downward movement of the cylinder (3). A device for removing a medical needle, characterized in that a claw (8) of the claw plate (7) projects from the hole (4) of the cylinder (3) into the inside of the cylinder. 2. A body (1), a cylinder (3) which penetrates the body (1) and is attached to the bottom of the body (1) via a coil spring (9), and the cylinder (3). A sleeve (22) mounted on the outer periphery of the sleeve so as to be movable up and down, and a plate with a claw (24) fixed to the lower end of the sleeve (22).
And the sleeve (22) on the side opposite to the plate with nail (24)
(28a) fixed to the rack (28a) and a pinion (27) fixed to the cylindrical portion (3) and meshing with the rack (28a)
And a rack (28b) fixed to the main body (1) and meshing with the pinion (27), and the claw plate (24) associated with the downward movement of the sleeve (22) accompanying the downward movement of the cylinder (3).
Is pushed while being slid by the protrusion (26) provided on the main body (1), and the claw (25) of the plate (24) with the claw is provided in the cylindrical portion (3) and the sleeve (22). Two
1) A device for removing a medical needle, characterized in that it projects into the inside of the cylinder through (23). 3. A body (31) and a coil spring (37) penetrating the body (31) and at the bottom of the body (31).
And a cylinder (32) attached through a cylinder, and a needle receiving portion (33) composed of a plurality of parts, each part being axially attached at the upper end of the cylinder to form a cylindrical shape, and the cylinder (32) and the receiving part. A ring (3) that can move up and down like a sleeve on the outside of the needle (33).
4), each part of the needle receiving part (33) has a protrusion (38) that meshes with a protrusion of the blood sampling needle, and the ring (34) has at least one vertically elongated thin portion. A hole is provided, and a screw (42) screwed on the upper end of the hole just below the upper end of the cylinder (32) supports the ring (34) and limits the amount of vertical movement of the ring (34), The cylinder (3
2) is characterized in that a groove is spirally engraved on the outer periphery, and the pin (35) attached to the main body (31) is fitted into the groove and is configured to be lowered while rotating. Device for removing medical needles. 4. A disk (53) in place of the ring (34).
And a protrusion 52 for supporting the disc (53) is provided on the needle receiving portion (33) instead of the screw (42).
The device for removing a medical needle according to claim 3, further comprising an annular component (53) provided on the upper surface of the main body (31) so as to contact the lower surface of the disc (53) when the cylinder (32) is pushed down. .