JP2003325665A - Erroneous piercing preventive protector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an erroneous piercing accident in the handling of hollow needles such as an injection needle, a blood collecting needle, and a storage needle after use without affecting medical cares, increasing the frequency of occurrence of quality troubles, and causing serious quality troubles on quality functions in the medical cares such as injection, blood collection, infusion, extracorporeal circulation, and peritoneal cavity reflux. <P>SOLUTION: This erroneous piercing preventive protector 1 for the hollow needles 3 such as the injector needle, blood collecting needle, and storage needle comprises a casing 5 formed of a tubular elastic body having a slit 4 along an axis and a pair of handles 6 provided on the outer periphery of the casing so that the slit can be opened by pressing the handles. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical device or an accessory for a medicine (hereinafter referred to as a medical device, etc.), and further for injection, blood collection, infusion, blood transfusion, extracorporeal circulation, peritoneal perfusion and the like. Used injection needle, blood collection needle,
The present invention relates to the handling of hollow needles such as indwelling needles, and further relates to a protector having an erroneous puncture prevention function for preventing accidental puncture accidents caused by hollow needles after use.

[0002]

2. Description of the Related Art Hollow needles such as injection needles, blood collection needles and indwelling needles for injecting or removing liquid from the body such as injection, blood collection, infusion, blood transfusion, extracorporeal perfusion and peritoneal perfusion Is used. Before use, these hollow needles are protected by a protector called a protector so as not to damage the needle tip and to prevent the needle tip from damaging the fingers.

These hollow needles are used with the protector removed, but the protector is put on the needle tip of the hollow needle again so that the needle tip will not cause a puncture accident such as a finger when handling the hollow needle after use. To be However, the protector that is usually used is to move the fingertip with the protector from the needle tip of the hollow needle toward the needle base so that the protector can be covered with the hollow needle, so that the hollow needle is stored inside the protector. Is made. Therefore, at this time, an accident such as accidentally puncturing a finger having a protector with a needle tip, that is, an accidental puncture accident may occur. It is known that this seemingly trivial accident causes infection of serious viral diseases such as AIDS and viral hepatitis in the medical field.

As a conventional technique for solving this problem, there is one described in the publication of WO98 / 48871. To briefly explain this conventional example, after injection, the tip of the syringe is engaged with the piston, and the injection needle for each tip of the syringe is pulled into the syringe and stored. However, this conventional method is not only not applicable to other hollow needles such as syringes that do not have a space immediately behind the hollow needle, for example, a venous needle for infusion or blood transfusion, but also for a syringe. However, there is a drawback in that it cannot be used when liquid is left in the syringe after use, such as when collecting blood. Furthermore, in this conventional method, the structure of the tip of the syringe is complicated,
Not only is there a risk of a malfunction of the syringe itself, such as a leakage of liquid from the syringe or a disconnection of the syringe tip, as well as a malfunction of the erroneous puncture prevention function such as a storage error. It was an increase. Further, there is a risk that even the usability is deteriorated depending on the capacity of the syringe.

Further, there is one described in Japanese Patent Laid-Open No. 2000-342689. To briefly explain this conventional example, a safety cover composed of a gutter-shaped needle tip protection portion that covers the needle tip of a hollow needle and an elastic support having a base portion on the syringe side, and a gutter-shaped needle at the time of injection Since the tip protection part is displaced from the needle tip due to the flexibility of the prop, it can be pierced under the skin, and at other times, it is restored by the elasticity of the prop, and the gutter-shaped needle tip protection part covers the needle tip. It is to continue. However, in general, the most important thing in the act of injecting is to secure a site, such as a vein, into which an injection solution is injected, and to prevent damage to other organs or tissues such as nerve fibers. However, in this conventional method, there is a gutter-shaped needle tip protection part near the hollow needle even during injection, which may cause confusion in the injection act itself, and it is difficult to secure a vein or other tissues. There was a risk of hurt.

[0006]

Therefore, the present invention is applied to most cases of medical devices having a hollow needle for piercing a human body in medical procedures such as injection, blood collection, infusion, blood transfusion, extracorporeal circulation, peritoneal perfusion and the like. It is possible to adopt, it does not adversely affect the medical practice itself, the frequency of quality troubles is low, and it does not cause serious quality troubles to other quality functions that are not related to the accidental puncture prevention function. What
An object of the present invention is to provide means for preventing accidental puncture accidents caused by handling after use of hollow needles such as injection needles, blood collection needles and indwelling needles. That is, the present invention can be adopted without being limited to the peripheral structure of the hollow needle, medical practice, for example,
There is nothing in the vicinity of the hollow needle that adversely affects the usability, such as hindering, hindering, or limiting the injection action, the shape is simple, and the function of preventing accidental puncture is mostly dependent on the medical device body. It is to provide a protector that prevents accidental puncture accidents that does not require moving the fingertip holding the protector from the needle tip of the hollow needle toward the needle base when the protector is put on the hollow needle.

[0007]

The present invention provides at least the following:
A hollow needle for injecting liquid into or out of the body and a container for storing liquid to be injected into or discharged from the body, or a conduit and a hollow needle connected directly or indirectly to those containers In a medical device including a connector for protecting the hollow needle and a protector covering the hollow needle, the protector is a casing made of a tubular elastic body having a slit along the axis, and the outer periphery of the casing is pinched. The object is achieved by providing an erroneous puncture prevention protector characterized by comprising a pair of handles provided so as to open a slit.

That is, according to the present invention, a housing for accommodating a hollow needle is formed of a cylindrical elastic body, and a slit along the axis of the housing is provided on the housing, and a pair of handles provided on the outer circumference of the housing. This slit is opened by pinching, and the used hollow needle is to be stored by inserting it into the housing through the opened slit from the side, that is, from the direction perpendicular to the axis of the housing. Yes,
When covering the used hollow needle with the protector, you do not have to move the fingertip with the protector parallel to the axis of the housing from the needle tip of the hollow needle toward the needle base, so you accidentally hold the protector. It is possible to prevent an accident such as puncturing a finger with the tip of a hollow needle, that is, an accidental puncture accident.

After the hollow needle is inserted into the housing, in order to complete the storage, it is necessary to move the fingertip with the protector parallel to the axis of the housing from the needle tip of the hollow needle toward the needle base. The present invention is also performed because it does not lead to accidental puncture. The slit referred to here may have a slight gap before the opening, or may have no gap at all. Further, the connecting tool mentioned here does not necessarily have to be a part that can be separated from the hollow needle, the conduit, and the container, and may be formed integrally with the hollow needle, the conduit, and the container, and may be a part thereof. Also, it may be composed of a plurality of parts. Also, "along the axis" here means that when the tubular casing is considered to be a cylinder, it is directed in substantially the same direction as the axis of the cylinder. The term “slit” is used to mean that the slit that has entered the housing is generally in the same direction as the axis of the housing. Further, as the material of the casing which is a cylindrical elastic body, thermoplastic resin such as high density polyethylene resin, polypropylene resin, ABS resin, rubber, thermoplastic elastomer, etc. are usually used, but metal such as stainless steel is used. It may be.

The protector against erroneous puncture according to claim 2 of the present invention is the protector against erroneous puncture according to claim 1, wherein a pair of closing handles are provided on the outer periphery of the housing so as to close the slit by pinching. It is characterized by that. That is, in the erroneous puncture prevention protector according to claim 1, further, a pair of closing handles is provided on the outer circumference of the housing in addition to the handles, and the slit gap is closed by pinching the pair of closing handles. When the opening of the slit is caused by the plastic deformation left in the housing, the gap of the slit is closed by the closing handle.
Further, the hollow needle or the connecting tool can be securely fitted to prevent accidental sticking due to detachment of the protector. Although the material used for the housing is used as an elastic body, it is needless to say that plastic deformation may occur because it is not an ideal elastic body.

The erroneous puncture prevention protector according to claim 3 of the present invention is characterized in that, in the erroneous puncture prevention protector according to claim 1, the handle is provided on the outer periphery of the housing via a hinge. That is, in the erroneous puncture prevention protector according to claim 1, the handle is tilted about the hinge as a center of rotation on the side opposite to the slit until it comes in contact with the outer circumference of the housing, so that the handle becomes the outer circumference of the housing. A lever is formed with the point of contact with the fulcrum as the fulcrum, the hinge as the point of action, and the knob of the handle as the force point, and by squeezing the knob of the handle, a large slit can be easily opened by the lever principle. It was done like this. Here, the knob part of the handle is
When the handle is divided into a hinge-side part and a tip-side part with the fulcrum as a boundary, the part on the tip-side is referred to.

A structure serving as a fulcrum may be provided on the outer circumference of the housing so that the tilted handle forms an efficient lever. This structure is also included in the outer circumference of the housing here in the sense of being in contact with the outer circumference of the housing. The term "hinge" used herein means a portion where the portion connected by the hinge is easily bent so that the pendulum can be relatively moved with the hinge as a fulcrum or as a rotation center. There is a method of reducing the thickness of the portion, a method of using a material having flexibility in the portion, and the like.

The protector against erroneous puncture according to claim 4 of the present invention is the protector against erroneous puncture according to claim 3, wherein the handle can be tilted to the slit side or the side opposite to the slit with the hinge as the rotation center. The slit is closed when the handle is pushed down to the slit side and is pulled down, and the slit is opened when the handle is pushed down to the opposite side to the slit.

That is, in the erroneous puncture prevention protector according to the third aspect, the handle is tilted with the hinge as the center of rotation on the side opposite to the slit until it comes into contact with the outer periphery of the case, so that the handle is housed. A lever is formed with the point of contact with the outer periphery of the body as the fulcrum, the hinge as the point of action, and the knob of the handle as the point of force, and by leveraging the knob of the handle, it is possible to easily and largely slit by the lever principle. On the contrary, the handle can be tilted to the slit side with the hinge as the center of rotation until it comes in contact with the outer circumference of the housing. A lever is formed with the point of contact as the point of action and the knob of the handle as the point of force. Ri that which was to be able to close the slit.

According to a fifth aspect of the present invention, there is provided an erroneous puncture prevention protector according to the fourth aspect of the present invention, in which the handle slit side is engaged with each other.
It is characterized in that it is provided with a claw and a claw receiver capable of keeping the slit closed. That is, in the erroneous puncture prevention protector according to claim 4, there is provided a pawl on the slit side of one handle and a pawl receiver for engaging the pawl on the slit side of the other handle to keep the handle in a depressed state. By providing it, the slit can also be maintained in the closed state.

The protector against erroneous puncture according to claim 6 of the present invention is the protector against erroneous puncture according to claim 2, wherein the slit side of the closing handle is engaged with each other to keep the slit closed. It is characterized in that it is provided with a claw and a claw receiver that can be maintained at. That is,
The protector against erroneous puncture according to claim 2, wherein a claw is engaged with the slit side of one closing handle and a claw is engaged with the slit side of the other closing handle to keep the closing handle in a slung state. By providing the slit, the slit can also be maintained in the closed state. The term "closed" used herein means to close the entrance or the exit, and the opening means to open the entrance or the exit.

[0017]

Embodiments of the present invention will be described based on embodiments with reference to the drawings. Example 1 The erroneous puncture prevention protector 1 of the present example is fixed to a connecting tool 2 and is further provided in a container for storing a liquid to be injected into the body or discharged to the outside through the connecting tool 2, or to those containers. It is intended to prevent accidental puncture after use by the hollow needle 3 connected to a conduit that is directly or indirectly connected, and is formed by injection molding of polypropylene resin along the axis as shown in FIG. By pinching the tubular casing 5 having the slit 4 and the outer periphery of the casing 5,
It consists of a pair of handles 6 provided so as to open the slits 4, and as shown in FIG. 2, it is possible to open the slits 4 by penetrating the pair of handles 6, and further, a hollow needle fixed to the connector 2. 3 is inserted into the housing 5 from the direction perpendicular to the axis of the housing 5, that is, from the direction of the arrow 11 through the opened slit 4, and can be stored as shown in FIG. There is.

When the erroneous puncture prevention protector 1 of this embodiment is put on the hollow needle 3, it can be inserted from the direction of the arrow 11 into the housing 5 through the opened slit 4.
In other words, the fingertip with the accidental puncture protector 1
Since it does not have to move from the needle tip of the hollow needle 3 toward the needle base in parallel with the axis of the housing 5, the needle tip of the hollow needle 3 can be stored without moving in the piercing direction. It is possible to prevent an accident such as accidentally sticking a finger having the accidental puncture protector 1 with the needle tip of the hollow needle 3, that is, an accidental puncture accident. Since the housing 5 is made of polypropylene resin, it can be restored to its original shape by releasing the finger holding the handle 6. That is, after the hollow needle 3 is inserted into the housing 5 through the opened slit 4, the finger holding the handle 6 is released, and the hollow needle 3 is completely stored in the housing 5. Also in the present invention, after inserting the hollow needle 3 into the housing 5, the fingertip having the false puncture protector 1 is parallel to the axis of the housing 5 from the needle tip of the hollow needle 3 in the needle base direction. You can also move to and complete the storage.

Embodiment 2 As shown in FIG. 4 or FIG. 5, the erroneous puncture prevention protector 1 according to the present embodiment further comprises, on the outer periphery of the casing 5 of Embodiment 1,
It is possible to maintain a state in which the slit 4 is kept closed by providing a pair of closing handles 7 that are configured to close the slit 4 by pinching, and further engaging with each other on the slit 4 side of the closing handle 7 so as to keep the slit 4 closed. The nail 8 and the nail receiver 9 are provided. That is, according to the present embodiment, after the hollow needle 3 is housed in the housing 5, the closing handle 7 is slid to engage the claw 8 and the claw receiver 9, thereby causing the slit 4 to undergo plastic deformation of the polypropylene resin. In the case where the slit 4 is not completely closed, this can be improved and the slit 4 can be maintained in the closed state, and the loose fitting with the connector 2 can be eliminated, that is, the protector. It is possible to prevent the accidental sticking accident caused by the protector coming off by making it hard to come off.

When the hollow needle 3 is inserted into the housing 5, a strong squeezing force is required to open the slit 4 large, or the housing 5 is plastically deformed if the opening is large. There may be inconvenience. In such a case, if there is a guide that is widened toward the outside of the slit 4 at least when the slit 4 is opened, it is not necessary to widen the slit 4 so that it is convenient. In this embodiment, the closing handle 7 is provided so as to also serve as this guide.

Embodiment 3 As shown in FIG. 6, the erroneous puncture prevention protector 1 of the present embodiment is arranged such that, instead of the handle of Embodiment 1, the hinge 10 is rotated about the outer periphery of the housing 5 via the hinge 10. Is provided with a pair of handles 6 that can be tilted to the slit 4 side or the side opposite to the slit 4, and further, the handle 6 is engaged with the slit 4 side of the handle 6 to close the slit 4. A claw 8 and a claw receiver 9 that can be maintained as they are are provided. According to this embodiment, FIG.
As shown in, the handle 6 is tilted on the side opposite to the slit 4 with the hinge 10 as the center of rotation until it comes into contact with the outer periphery of the housing 5, and the handle 6 is sunk to open the slit 4. As shown in FIG. 7, when the handle 6 is tilted toward the slit 4 side to squeeze the handle 6, the slit 4 is closed, and by further strongly squeezing the handle 6, the claw 8 is engaged with the claw receiver 9 to close the slit 4. It is possible to maintain the state as it is and to surely fit the connecting tool 2.

[0022]

As described above, according to the present invention, it is adopted in almost all cases of medical devices having a hollow needle for piercing the human body in medical procedures such as injection, blood collection, infusion, blood transfusion, extracorporeal circulation, peritoneal perfusion and the like. It is possible, it does not adversely affect the medical practice itself, the frequency of quality troubles is low,
Furthermore, in order to prevent serious quality problems from affecting other quality functions that are not related to the function of preventing accidental puncture, accidental accidental puncture due to handling after use of hollow needles such as injection needles, blood collection needles, and indwelling needles can be avoided. Means for preventing can be provided.
That is, according to the present invention, the hollow needle can be adopted with almost no limitation on the peripheral structure, and can be used for medical procedures such as, for example, injecting, interfering with, obstructing, or limiting. There is nothing adversely affecting the hollow needle, the shape is simple, and there is almost no reliance on the body of the medical device to prevent accidental puncture, and when the protector is covered with the hollow needle, the fingertip with the protector is used. It is possible to provide a protector that prevents accidental puncture accidents that do not need to move from the needle tip toward the needle base.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of an accidental puncture protector according to the present invention.

FIG. 2 is a perspective view when a used hollow needle is inserted into the accidental puncture prevention protector according to the first embodiment.

FIG. 3 is a perspective view after the used hollow needle is stored in the erroneous puncture prevention protector according to the first embodiment.

FIG. 4 is a perspective view of a second embodiment of an accidental puncture protector according to the present invention.

FIG. 5 is an enlarged perspective view of the vicinity of a claw and a claw receiver of the accidental puncture protector of the second embodiment.

FIG. 6 is a perspective view of a third embodiment of an accidental puncture prevention protector according to the present invention.

FIG. 7 is a perspective view when the handle of the erroneous puncture prevention protector of the third embodiment is tilted to the side opposite to the slit.

FIG. 8 is a perspective view when the handle of the erroneous puncture prevention protector according to the third embodiment is tilted to the slit side to keep the slit closed.

[Explanation of symbols]

1 Accidental piercing prevention protector 2 connector 3 hollow needles 4 slits 5 housing 6 handles 7 Closure handle 8 nails 9 nail receiver 10 hinge 11 arrows

Claims (6)

[Claims] 1. At least a hollow needle for injecting a liquid into or out of a body, a container for storing a liquid to be injected into or out of a body, or directly or indirectly connected to those containers. In a medical device comprising a connector for connecting a hollow needle with a conduit and a protector covering the hollow needle, the protector is a casing made of a cylindrical elastic body having a slit along the axis, and a casing. A protector for preventing erroneous puncture, which comprises a pair of handles provided so as to open a slit by pinching the outer periphery of the handle. 2. The erroneous puncture protector according to claim 1, wherein a pair of closing handles are provided on the outer periphery of the housing so as to close the slit by pinching. 3. The erroneous puncture protector according to claim 1, wherein the handle is provided on the outer periphery of the housing via a hinge. 4. The handle can be tilted toward the slit side or the side opposite to the slit about the hinge as a fulcrum, and when the handle is tilted toward the slit side and the handle is pinched, the slit is closed.
The erroneous puncture protector according to claim 3, wherein the slit is configured to open when it is tilted to the side opposite to the slit and pinched. 5. The claw and the claw receiver, which can be engaged with each other and can maintain the slit closed, are provided on the slit side of the handle. Accidental piercing protector. 6. A claw and a claw receiver, which are engaged with each other on the slit side of the closing handle and can maintain the slit in a closed state.
Accidental piercing prevention protector described in.