JPH1028739A - Medical puncturing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a discarding of an inner needle body of an indwelling needle or an injection needle of an injector used in safety by eliminating possible secondary infection among related persons as caused by the hurting thereof. SOLUTION: A stopping member 11 is mounted on a holding member 1 for cutting or communication longitudinally inside, an inner needle hub 28 is securely sandwiched between a protrusion 5 at one end thereof and the stopping member 11 so that an indwelling needle 21 sticks ahead of the holding member 1 to be wrapped with a protective cover body 16. The protective cover body 16 is shifted to a rear end part of the holding member 1 for treatment. Thereafter, the stopping member 11 is moved and causes an inner needle 25 to drop into the protective cover body 16, thereby discarding it being sealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indwelling or injecting puncture device for percutaneously puncturing a blood vessel, a bile duct, or the like for medical treatment, more specifically, an inner needle or an injection needle to which blood or the like adheres after use. The present invention relates to a puncture device having a function of disposing of the puncture device in a safe state.

[0002]

2. Description of the Related Art The inner needle of an indwelling needle extracted from a target site such as a blood vessel or a bile duct after being punctured, or the injection needle of a syringe extracted from a target site after puncturing and performing injection or blood collection is treated. Blood and body fluids of the person. The inner needle and injection needle are disposable in order to prevent bacteria and viruses contained in these from infecting the next patient, but prevention of infection is not limited to the patient but also to the practitioner and its assistants. Care must be taken for all stakeholders, from waste collectors to waste collectors.

[0003] As a countermeasure, it is common practice to remove the indwelling needle for indwelling needle, store it again in an empty packaging case, and discard it. In this case, it is safe after storage, but since the inner needle and the packaging case are handled with different hands for storage, when trying to insert the inner needle close to the packaging case,
Perhaps there is a worry that the hand holding the packaging case will get hurt by the tip blade going out of hand.

In order to eliminate such a concern, when the cannula body of the indwelling needle having a double structure of the cannula body and the inner needle body is placed in a human body and the inner needle body is removed, the tip of the inner needle is closed with a cap. Japanese Patent Application Laid-Open No. 3-191965 proposes that the cover is automatically covered to eliminate the chance of damaging a fingertip or the like. That is, this is a configuration in which a cap is attached to the distal end of a bellows-shaped, telescope-shaped or coil spring-shaped elastic body to engage with the cannula hub, and the base end of the elastic body is fixed to the inner needle hub, The treatment is performed with the elastic body contracted.

[0005] Therefore, there is a problem that it is necessary to handle the elastic body with sufficient care so as not to be inadvertently expanded before or during the treatment, and it is difficult to concentrate attention on the treatment. In addition, when the elastic body having the same length as the inner needle when contracted is contracted, the outer diameter becomes considerably large, and protrudes greatly from the entire outer periphery of the hub. For this reason, when performing puncturing while holding the cannula hub or the inner needle hub in the vicinity, there is a disadvantage that the operability is not good because the elastic body is in the way.

On the other hand, as for the injection needle of the syringe, a means for separating the injection needle by hooking the needle base of the injection needle and pulling the injection cylinder is provided in the lid, and the separated injection needle falls and is stored in the container as it is. A hard waste container adapted to be used is disclosed in JP-A-1-52480 and JP-A-1-136665. Then, when this waste container is used, the injection needle can be separated without touching the hand, and since the stored injection needle does not break through the container body, safety of persons concerned can be expected. I have.

However, from the end of use to the time when the container is separated and housed in a waste container, there is no chance that the adhered blood touches or damages a finger or the like, and there is still a risk of infection. In addition, if a large number of injection needles are left for a long time to accumulate, there is a concern that the injection needles will pop out of the opening of the lid when accidentally knocked down.

[0008]

As described above, the widely used method of disposing of the used inner needle in the indwelling needle by returning it to the packaging case is extremely dangerous and has been proposed as a countermeasure. JP-A-3-19196
No. 5 has a problem in operability at the time of treatment. Further, the one disclosed in Japanese Patent Application Laid-Open No. Hei 1-52480, in which a used injection needle is separated and stored in a dedicated waste container in a syringe, is not suitable for safety from the end of use to the separation and storage. There's a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and can be safely disposed without fear of damaging a finger or the like when applied to both the inner needle body of an indwelling needle and the injection needle of a syringe. It is intended to provide a means capable of doing this.

[0010]

According to the present invention, there is provided a holding member having a cylindrical shape with both ends opened and having an inward projection at an opening portion at a front end, and a position for opening and closing at least a part of the inside of the holding member. A movable stop member is mounted at a position where the needle member is to be fixed, the needle base of the needle member is sandwiched and fixed between the projection and the stop member, and the needle body projects forward of the holding member. The protective cover was wrapped and joined, and the protective cover was detachable from the front end and joined to the rear end.

The needle member is any one of an inner needle body of an indwelling needle, an inner needle body of an indwelling needle with a syringe barrel, and a syringe needle of a syringe. In the latter two cases, the tip of the syringe barrel is attached to the holding member. The needle attachment portion was detachably fitted to the rear end portion, penetrated the stop member, and joined to the needle base.

Then, shipping, distribution, and storage are performed with the needle member fixed to the holding member and the needle body wrapped with the protective cover body.
At the time of treatment, the protective cover body is removed, and in the former case, it is connected to the rear end of the holding member. In the latter two cases, it is placed near, and the exposed needle is punctured into the target site. The protective cover or syringe barrel connected to the rear end greatly expands the part that the practitioner can hold and improves operability. Further, since the stop member does not protrude from the entire outer periphery, operability is not impaired.

When the needle is removed from the human body after the puncture, the former is left as it is, and in the case of the latter two, the syringe is separated and the protective cover is connected to the rear end of the holding member. The stop is moved to the open position and the needle is upright with the needle pointing upward. As a result, the needle body falls into the protective case body by its own weight, so the stop member is moved to the closed position again and sealed, so that the used inner needle and injection needle can be processed in a safe state without fear of damaging the hands etc. It can be discarded.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described with reference to the drawings.

The holding member 1 applied to the embodiment shown in FIGS. 1 to 8 is made of a short cylinder made of a hard synthetic resin, has openings 3 and 4 at both ends, and has an opening 3 at the tip. An annular projection 5 protruding inward from the peripheral wall 2 is provided, and the outer peripheral surface at the rear end of the peripheral wall 2 forms a knurl or a coupling portion 6 having a large number of irregularities. In the central portion of the holding member 1, the peripheral wall 2 is provided with two guide grooves 7 and groove-shaped holes 8 which are located on a plane perpendicular to the axis and face each other and are perpendicular to each other. .

The stop member 11 is an elliptical plate made of a hard synthetic resin, and has a through hole 12 having a diameter substantially equal to the inner diameter of the holding member 1 and a closing wall 1 for blocking the inside of the holding member 1 back and forth.
3, and both side edges on the short diameter side are fitted into the guide groove 7 and inserted into the holding member 1 from the groove-shaped hole 8. The stop member 11 is reciprocally movable between a position where the inside of the holding member 1 is completely communicated back and forth by the through hole 12 and a position where the front and rear are completely shut off by the closing wall 13.

Further, the protective cover body 16 is made of a hard synthetic resin, and has a peripheral wall 17 whose front end is closed by a top wall 18 and which has an insertion port 19 whose diameter is enlarged at its base end. .

FIG. 1, FIG. 2 and FIG. 3 show a first embodiment of the present invention, in which a cannula 23 made of a synthetic resin-made flexible thin tube and a rigid cylindrical shape integrally formed at the base end thereof are shown. A cannula body 22 formed by a cannula hub 24, a metal inner needle 26 having a diameter inserted through the cannula 23 with almost no clearance and having a puncture blade 27 at the distal end, and a hard synthetic resin This is applied to the indwelling needle 21 constituted by the inner needle body 25 formed by the inner needle hub 28.

The inner needle hub 28 has a tapered distal end portion 28a and a proximal end portion 28b having a larger diameter than the tapered distal end portion 28a. The cannula hub 24 is fitted into the distal end portion 28a to project the puncture blade 27 from the distal end. In this state, the inner needle 26 is inserted through the cannula 23. A filter 29 that allows air to pass therethrough but does not allow blood or bodily fluids to pass therethrough is fixed to the base end 28b.

As shown in FIG. 1, the indwelling needle 21 has the base end 28b inserted into the holding member 1 and the projection 5 and the closing wall 1
The inner needle 26 is fixed to the holding member 1 by being sandwiched between the holding member 1 and the front end of the holding member 1, and protrudes forward by the protection cover body 16 in which the insertion port 19 is fitted to the tip of the holding member 1.
The film is packaged in a state in which it is wrapped with the cannula body 22, and is shipped, distributed, and stored.

In medical treatment, the practitioner must use the protective cover 1
6, the insertion port 19 is fitted into the connecting portion 6 and is made to bite into the knurl or unevenness, so that the holding member 1 is replaced and connected, and the inner needle 26 and the cannula body 22 are connected. It is exposed (see FIG. 3A).

The practitioner usually performs puncturing by holding the cannula hub 24 and the inner needle hub 28 between the thumb and the index finger, and hooks the remaining fingers on the holding member 1 or the protective cover body 16 or all the fingers. Holding member 1 and protective cover body 16
It is possible to operate stably by holding the and. At this time, since the stop member 11 is plate-shaped and only protrudes to one side, it does not hinder the operation.

When the inner needle body 25 is removed while the cannula body 22 is left by puncturing the target site, the stop member 11 is moved by pushing the stop member 11 to a position where the through hole 12 completely communicates the inside of the holding member 1 back and forth. Then, the protective cover body 16 is erected so that the inner needle body 25 faces upward. The inner needle body 25 passes through the holding member 1 through the through hole 12 by its own weight, and
6 (see FIG. 3B).

The outer diameter of the proximal end portion 28b of the inner needle hub 28 and the inner diameter of the protective cover 16 are small, so that the proximal end portion 28b is slightly inclined to contact the peripheral wall 17. As a result, the inner needle body 25 falls slowly.

When the inner needle body 25 reaches the top wall 18 located at the bottom, the stop member 11 is pushed back to the position where the closing wall 13 completely blocks the inside of the holding member 1 back and forth, and the inner needle body 25
Is stored in the protective cover body 16 so as not to protrude (see C in FIG. 3). Then, it is discarded in this state.

The first embodiment described above corresponds to the invention described in claims 1 and 2, and the inner needle 2
5, the inner needle 26 and the inner needle hub 28 are the needle member of the present invention,
It corresponds to a needle body and a needle base. According to this embodiment, the holding member 1 and the protective cover body 16 are used effectively as a packaging case for the indwelling needle 21 and a waste container for the used inner needle body 25, which is economical. Also, the protective cover 1
The indwelling needle 21 can be punctured by a simple operation of simply removing the inner needle 6, and the stop member 11 is pushed back and forth to reciprocate and the protective cover body 16 is erected, so that the used inner needle body 25 can be pierced. It is safe because it can be placed in a disposable state with only one hand operation without approaching or touching the hand or the like.

FIGS. 4, 5 and 6 show a second embodiment of the present invention, in which the tip of the cylinder tube 32 of the injection tube 31 composed of the cylinder tube 32 and the piston 34 is the holding member 1.
The needle mounting portion 33 which is fitted tightly through the rear opening 4 and protrudes from the distal end of the cylinder
8b. The stop member 11 has a small hole 14 that penetrates the needle attachment portion 33 between the through hole 12 and the closing wall 13, and the base end portion 28 b has no gap between the periphery of the small hole 14 and the protrusion 5. The indwelling needle 21 is fixed to the holding member 1 by being fitted.

In this embodiment, the present invention is applied to an indwelling needle with a syringe barrel. The shape, structure and function of the holding member 1, the protective cover 16 and the indwelling needle 21 are the same as those of the first embodiment. Since they are the same as those of the first embodiment, the same reference numerals are given to the common parts, and the description thereof will be omitted. However, the inner needle body 25 does not have the filter 29.

As shown in FIG. 4, the indwelling needle 21 and the injection tube 31 are attached to the holding member 1 by protruding in the opposite directions, and the indwelling needle 21 is wrapped with the protective cover body 16 to form a film package. Shipping, distribution and storage are performed.

In medical treatment, the practitioner should use the protective cover 1
6 is removed and placed so as not to be lost, and the exposed indwelling needle 21 is punctured into the target site. When the puncture is confirmed by pulling the piston 34 to draw blood and body fluid into the cylinder tube 32, the cannula body 22 is left, the inner needle body 25 is pulled out, and the injection tube 31 is pulled out of the holding member 1. I do.

Next, the protective cover body 16 is connected to the rear end of the holding member 1, and the stop member 11 is moved by pressing the stop member 11 to a position where the through hole 12 completely communicates the inside of the holding member 1 back and forth.
The protection cover body 16 is erected so that the inner needle body 25 faces upward. The inner needle body 25 passes through the holding member 1 through the through hole 12 by its own weight, and falls into the protective cover body 16 (A in FIG. 6).
reference).

When the inner needle body 25 reaches the top wall 18 located at the bottom, the stop member 11 is pushed and moved to a position where the closing wall 13 completely blocks the inside of the holding member 1 back and forth, and the inner needle body 25 is moved. Is stored in the protective cover body 16 so as not to protrude (see FIG. 6B). Then, it is discarded in this state. Since the syringe barrel 31 has no dangerous parts to hurt a person, it can be discarded by commonly used means.

According to this embodiment, the practitioner can use the cannula hub 24, the inner needle hub 28, the holding member 1, and the syringe 31.
It can be operated stably because it can have any location. At this time, since the stop member 11 is plate-shaped and protrudes in the diameter direction, it does not significantly obstruct the operation. In addition, since the outer diameter of the base end portion 28b of the inner needle hub 28 and the inner diameter of the protective cover body 16 are small, the used inner needle body 25 is slowly dropped into the protective cover body 16. It can be stored.

The second embodiment described above corresponds to the first and third aspects of the present invention, and is effective in that the holding member 1 and the protective cover body 16 are effectively used and economical. It is the same as that of the first embodiment that it is simple and that the used inner needle body 25 can be safely disposed.

FIGS. 7 and 8 show a third embodiment of the present invention, in which an injection needle is attached to a needle mounting portion 43 of the injection cylinder 41 comprising a cylinder cylinder 42 and a piston 44 projecting from the tip of the cylinder cylinder 42. Forty-five needle bases 47 are fitted. Needle base 47
Has a small-diameter distal end portion 47a and a large-diameter proximal end portion 47b.

That is, in this embodiment, the present invention is applied to a syringe, and the shape, structure and function of the holding member 1, the stop member 11, and the protective cover 26 are the same as those of the second embodiment. Since they are the same, common parts are denoted by the same reference numerals and description thereof is omitted.

This is, as shown in FIG.
Is inserted into the holding member 1 and is sandwiched between the protrusion 5 and the peripheral portion of the small hole 14 of the stop member 11 without a front-rear gap, whereby the injection needle 45 is fixed to the holding member 1, and The distal end is densely fitted into the holding member 1 from behind, and the needle attachment portion 43 is fitted through the small hole 14 into the base end 47b, whereby the syringe barrel 41 is attached to the holding member 1 and the injection needle 45 Is wrapped in a film in a state of being wrapped in a protective cover body 16, and is shipped, distributed, and stored.

In medical treatment, the practitioner should use the protective cover 1
6 is removed and placed so as not to be lost, the needle 46 of the exposed injection needle 45 is punctured into the target site, and the piston 44 is pushed to inject the drug solution into the human body. The liquid medicine may be sealed in the syringe 41 in advance, or may be sucked through the injection needle 45 at the time of injection.

When the injection needle 45 is removed from the human body after the injection, the syringe barrel 41 is removed from the holding member 1, the protective cover 16 is connected to the rear end of the holding member 1, and the through hole 12 is inserted into the holding member. The stop member 11 is pushed and moved to a position where the inside of the inside 1 is completely communicated back and forth.

Thereafter, the used injection needle 45 is put into a state in which it can be discarded by the same procedure as that of the second embodiment, and the injection needle 45 falls into the protective cover body 16 by its own weight. Through the state shown in FIG.
As a result, the state shown in FIG. 8B is stored in the protective cover body 16 so as not to protrude.

In this embodiment, the practitioner can operate with exactly the same handling as a normal syringe, and the stop member 11 is plate-shaped and only projects in the diametrical direction, so that the operation is significantly obstructed. Does not. Needle base 47
Since the outer diameter of the base end portion 47b and the inner diameter of the protective cover body 16 have a small dimensional difference, the used injection needle 45 is slowly dropped and stored in the protective cover body 16.

The third embodiment described above corresponds to the first and fourth aspects of the present invention, and is effective in that the holding member 1 and the protective cover body 16 are effectively used and economical. The simplicity and the ability to safely dispose of the used injection needle 45 are the same as in the first and second embodiments.

Next, the stop member 11 in the second and third embodiments has a through hole 12, a small hole 14, and a closing wall 13 which are arranged in this order in order to move the holding member 1 to both sides at the time of treatment. It may be disturbing because it protrudes.

FIG. 9 shows an embodiment in which this point is improved. The stop member 51 has an oval plate shape.
A thin packing 54 having a through hole 52 having a diameter substantially equal to the inner diameter of the holding member and a small hole 53 penetrating the needle mounting portion of the syringe barrel, and made of a highly elastic material such as silicone rubber. Are attached so as to cover the small holes 53. The packing 54 has a peripheral portion fixed to the stop member 51 and a small hole 53.
And a plurality of cuts 55 in the radial direction at the same center.

The needle mounting portions 33 and 43 penetrate the small holes 53, push and expand the portions divided by the cuts 55 of the packing 54, and are fitted and connected to the inner needle hub 28 or the needle base 47. Since the packing 54 normally closes the small hole 53, when the used inner needle 25 or the injection needle 45 is dropped into the protective cover 16, the packing 54 completely moves back and forth inside the holding member 1. The position where the packing 54 and the stop member 51 are attached serves as a closing wall 56.

That is, since the stop member 51 is located at the same position at the time of treatment and at the time of disposal, it is projected to only one side of the holding member 1 like the stop member 11 in the first embodiment. In addition, operation obstruction is reduced.

[0047]

As described above, the protective cover which can be attached to the front end of the holding member to which the stop member is attached so as to fix the needle member so as to protrude forward or to pass backward, and to the rear end thereof. According to the present invention in which the body is connected and the needle member is wrapped, the used needle member is hand-operated by a simple procedure of dropping by its own weight into the protective cover body connected to the rear end of the holding member and enclosing with the stop member. The device can be stored and safely disposed without any risk of injuring the hands and infecting bacteria, viruses, and the like in handling the indwelling needle and the syringe without approaching or touching the device.

Further, since the holding member and the protective cover body are used for both the unused needle member packaging case and the used needle member disposal container, the empty packaging case is disposed of or a dedicated disposal container is prepared. Is very economical.

Furthermore, since the protective cover body or the syringe barrel is extended behind the needle member during the treatment, the range that can be held by the practitioner is greatly increased, and the operability is improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG. 1;

FIG. 3 is a longitudinal sectional view for explaining how to use the embodiment shown in FIG. 1;

FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention.

FIG. 5 is a sectional view taken along the line YY of FIG. 4;

FIG. 6 is a longitudinal sectional view for explaining how to use the embodiment shown in FIG. 4;

FIG. 7 is a longitudinal sectional view showing a third embodiment of the present invention.

FIG. 8 is a longitudinal sectional view for explaining how to use the embodiment shown in FIG. 7;

FIG. 9 is a front view and a longitudinal sectional view showing another form of the stop member.

[Explanation of symbols]

1 holding member, 3, 4 opening, 5 protrusion, 11, 51 stop member, 12, 52 through hole, 13, 56 closing wall, 14, 53 small hole, 16 protective cover body, 21 indwelling needle, 25 inner needle body, 28
Inner needle hub, 31, 41 syringe barrel, 33, 43 needle attachment part, 4
5 injection needles, 47 needles,

Claims (4)

[Claims] 1. A holding member having a cylindrical shape with both ends opened and having an inward projection at an opening portion at a tip, a position attached to the holding member and blocking at least a part of the inside of the holding member back and forth and opening. A movable stop member at a position where the needle member is fixed, the needle base is fixedly sandwiched between the protrusion and the stop member, and a needle member is projected forward of the holding member. A protective cover body coupled to a distal end of the member, wherein the protective cover body is detachable from a distal end of the holding member and can be coupled to a rear end of the medical puncture device. . 2. The medical puncture device according to claim 1, wherein the needle member is an inner needle body of an indwelling needle, and an inner needle hub serving as the needle base is fixed by being sandwiched between the protrusion and a stop member. The medical puncture device according to claim 1, wherein the inner needle as the needle body is projected forward of the holding member. 3. The medical puncture device according to claim 1, wherein the needle member is an inner needle of an indwelling needle with a syringe, and a tip of the syringe is detachable from a rear end of the holding member. A puncture device for medical use, wherein a needle attachment portion is inserted into the stop member and connected to the inner needle hub serving as the needle base through the stop member. 4. The medical puncture device according to claim 1, wherein the needle member is a syringe needle of a syringe, and a distal end of a syringe barrel of the syringe is detachably fitted to a rear end of the holding member. A medical puncture device, wherein a rare needle attaching portion is connected to the needle base through the stop member.