JP2001259034A - Bellows-shaped elastic needle cover and safety deice for preventing erroneous needling with the needle cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bellows-shaped elastic needle cover and a safety device for preventing erroneous needling with the needle cover which are perfect in securing of safety and capable of preventing not only sticking of blood, etc., to the human body but also a needling accident, etc. SOLUTION: In the bellows-shaped elastic needle cover 1 which is formed dividedly into a front part 2, a middle bellows part 3 and a rear part 4 and where the part 3 and the part 4 are formed in a expandable and contractible bellows shape through the longitudinal direction of the needle cover and the fixing part 6 of a needle pipe 12 is arranged on the inner surface of the part 2, an operable and closable clogging part 5 (5A) is mounted at the end of the part 2 and a stopper 13 for controlling expansion and contraction of the longitudinal direction of the needle cover of the part 3 is arranged at the end of the part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bellows-like elastic needle cover of a medical needle used for collecting blood or the like from a human body or injecting an infusion or the like into a human body or the like, and preventing erroneous insertion with a needle cover. The improvement of safety devices for vehicles.

[0002]

2. Description of the Related Art As is well known, a needle cap attached to a medical needle such as a winged needle or a blood collection needle is formed in a cylindrical shape or a tapered cylindrical shape.
It is used to protect the needle tip and recap for safety when disposing of the medical needle. However, these needle caps merely fit the inner circumference to the outer circumference of the needle base on which the needle is implanted.Therefore, there is a problem before puncturing the patient. The needle cover sometimes came off. Conversely, if the fitting degree is too tight, the fingertip or the like may be accidentally stabbed due to the momentum at the time of removal. Also, as a problem before disposal, when attaching the needle cap to the needle again, the operator's finger may be stabbed by mistake, or if discarded without attaching the needle cap, the worker may be working with a needle with blood attached. There was a danger of accidental stabbing. Therefore, the following inventions have been proposed to avoid the above danger. A cylindrical needle cover that can slide in the direction of the needle cap is attached to the tube attached to the needle base separately from the needle cap, and after using the needle, the sliding needle cover is covered with the needle. Was. However, in these inventions, since the needle cap and the needle cover are separately provided, the number of parts tends to increase and the cost tends to increase, and the operation of sliding the needle cover and covering the needle with the needle is inconvenient and inconvenient. there were. Therefore, the present inventor (1) when performing injection or collection of blood, a drug solution, or the like using a needle on a human body or the like, must perform the operation of collecting (injecting) the needle under complete safety management. (2) Conventionally, the tip of the needle before and after piercing has a sharp cutting edge exposed in the air, which is extremely dangerous and may cause infection by accidentally touching or piercing a part of the human body. Large,
Considering that it is important to ensure the safety of workers such as doctors or nurses from these dangers, and (3) that it is a means of infection control with good operability, we are keen to solve the above problems. As a result of repeated studies, the following invention was reached.

[0003]

Means for Solving the Problems [1] The present invention is formed so as to be divided into a front part 2, a middle part 3 and a rear part 4, and the middle part 3 and the rear part 4 are arranged in the length direction of the needle cover. Provided is a bellows-like elastic needle cover 1 which is formed in a bellows shape which can be extended and contracted over, and in which a fixing part 6 of a needle tube 12 is arranged on an inner surface of a front part 2. [2] In the present invention, an openable / closable closing portion 5 (5A) is attached to the front end of the front portion 2, and a mid-abdomen 3 is provided outside the rear portion 4.
Stopper 13 for controlling the lengthwise expansion and contraction of the needle cover
A bellows-like elastic needle cover 1 according to [1], wherein the cover is disposed. [3] The present invention is characterized in that the cross section of the middle part 3 and the rear part 4 is formed in a substantially semicircular shape, and is formed in a substantially semicircular shape that is non-uniform over the length direction of the needle cover. A bellows-like elastic needle cover 1 according to [1] or [2] is provided. [4] The present invention is formed of a needle base 11 in which a needle tube 12 is implanted and the needle cover 1 according to any one of [1] to [3] covered by the needle tube 12, and fixes a cutting edge base of the needle tube 12. Secured by the part 6, the rear part 4 is mounted on the small diameter part 11S of the needle base 11, and the stopper 13 is detachably or integrally mounted on the outer surface of the large diameter part 11L of the needle base 11. An apparatus 10 is provided. [5] According to the present invention, when the mid-abdomen 3 is contracted in the direction of the needle base 11 to expose the needle tube 12, the contracted mid-abdomen 3 is prevented from being returned to the original shape by being clamped from the outside by the stopper 13. When covering the needle tube 12 by extending the mid-abdominal portion 3 in the direction of the cutting edge, the pinching by the stopper 13 is released, so that the mid-abdominal portion 3 is extended to its original shape, and the cutting edge of the needle tube 12 is moved to the front portion 2. The safety device for preventing erroneous insertion 10 with a needle cover according to [4], which is formed so as to suppress the exposure, is provided. [6] The present invention is formed of a needle base 11 in which a needle tube 12 is implanted and the needle cover 1 according to [1] to [3], which is covered by the needle tube 12, and is closed at the tip of the front part 2. Closing part 15 that can be opened and closed via a hinge 14 instead of mounting part 5
And the closing part 15 is fixed to the fixing part 17 through the connecting piece 16.
When the fixing portion 17 is mounted in the middle of the mid-abdominal portion 3 and the mid-abdominal portion 3 is contracted in the direction of the needle base 11 to expose the needle tube 12, the contracted mid-abdominal portion 3 is clamped from outside by the stopper 13. And the fixing portion 17 is also moved as the mid-abdomen 3 moves in the direction of the needle base 11, so that the connecting piece 16 pulls the closing portion 15 to close the closing portion 1.
5 is opened, and when the middle tube 3 is extended in the direction of the cutting edge and the needle tube 12 is covered, the middle tube 3 is extended and restored to the original shape by releasing the holding by the stopper 13, and the fixing portion 17 is removed. By returning to the original position, the connecting piece 16 is closed.
Provided is a safety device for preventing erroneous insertion 10A with a needle cover formed so as to prevent the closing portion 15 from returning to its original position by releasing the pulling force of the needle 5 and exposing the cutting edge of the needle tube 12 from the front portion 2. [7] The present invention is formed of a needle base 11 in which a needle tube 12 is implanted and the needle cover 1 according to [1] to [3], which is covered by the needle tube 12, and is closed at the tip of the front part 2. Closing part 15 that can be opened and closed via a hinge 14 instead of mounting part 5
When the closing portion 15 is connected to the distal end of the stopper 13 via the connecting piece 16A, and the middle abdomen 3 is contracted in the direction of the needle base 11 to expose the needle tube 12, the contracted middle abdomen 3 is Is prevented from being returned to the original shape by being pinched by the stopper 13, and the connecting piece 16A pulls the closing part 15 to open the closing part 15 as the tip part 2 and the mid-abdominal part 3 move toward the needle base 11. Then, when covering the needle tube 12 by extending the mid-abdominal portion 3 in the direction of the cutting edge, the mid-abdominal portion 3 is extended and restored to its original shape by releasing the holding by the stopper 13, and the front portion 2 is returned to the original position. In this case, the force with which the connecting piece 16 pulls the closing portion 15 is released, the closing portion 15 returns to its original position, and an erroneous insertion with a needle cover formed so as to prevent the cutting edge of the needle tube 12 from being exposed from the front portion 2. Safety device for prevention 10A
I will provide a.

[0004]

FIG. 1 is a schematic view of a bellows-like elastic needle cover (hereinafter referred to as a needle cover 1) and a safety device 10 (hereinafter referred to as a safety device 10) with a needle cover for preventing puncture according to the present invention. (A)
1 is a view taken in the direction of the arrow A in FIG. 1, FIG.
FIG. 2C is a plan view of the closing portion 5A showing another embodiment of the closing portion 5 in FIG. FIG. 3 is a schematic diagram showing a use state of the needle cover 1 and the safety device 10. FIG. 4 is a schematic view after the use of the needle cover 1 and the safety device 10. The needle cover 1 of the present invention is formed from a material such as elastic plastic or rubber (including natural or synthetic rubber-like plastic). As shown in FIG. 1, the needle cover 1 is divided into a front part 2, a middle part 3, and a rear part 4, and the middle part 3 and the rear part 4 are formed in a deep bellows shape, and the length direction of the needle cover Are formed so as to be able to expand and contract by the action of a spring. When the needle cover 1 expands again after being contracted, it is formed so as to extend to the length of the original shape. This can be achieved by selecting a material to be used, a bellows shape, a mode of maintaining contraction by a stopper 13 described later, and / or a combination thereof.

The bellows of the middle portion 3 and the rear portion 4 have a substantially semi-circular cross section (semicircular, arcuate, or arcuate cut from a circle) as shown in FIG. Is preferable because the needle cover 1 (safety device 10) has a better sense of stability when placed on a workbench or the like, and is easily curved and returns when returning from the contracted shape to the original shape. The needle cover 1 has a middle part 3 formed in a bellows with a long diameter LD, and a rear part 4.
Is formed in the bellows of small diameter SD. As described above, it is desirable that the bellows be formed in a non-uniform shape rather than a uniform shape in the length direction of the needle cover. The needle cover 1 expands and contracts in the vertical direction (the length direction of the needle tube 12), but when the needle tube 12 is exposed and the needle tube 12 is used and then covered with the needle tube 12 again, the needle cover 1 is more uneven than the uniform shape. Such a shape is preferable because it easily curves and returns. In other words, it is easier to operate because it returns more slowly if it returns in a curve than in a straight line. Returning early is not preferable because the front part 2 may come into contact with blood adhering to the needle blade and be scattered. Further, it is better that the gap between the inner surface of the mid-abdominal portion 3 and the outer surface of the needle tube 12 has a slight clearance so that the needle cover 1 is easily bent and returned. Therefore, the diameter ID of the inner surface of the mid-abdominal portion 3 is preferably formed to be at least twice the outer diameter OD of the needle tube 12. The front portion 2 is formed in a small-diameter tubular body, and is stored and protected so that the cutting edge of the needle tube 12 is not damaged before use. A fixed part 6 of the needle tube 12 is arranged on the inner surface of the front part 2.
The fixing portion 6 has a groove 6a. Groove 6a is needle tube 1
This is provided to fix the cutting edge of the needle tube 12 so as not to move in the front portion 2 before use. Thereby, the fixing portion 6 is mounted between the outer surface of the base of the cutting edge of the needle tube 12 and the inner surface of the front portion 2, and is fixed so that the cutting edge of the needle tube 12 does not contact the inner surface of the front portion 2 before use and is not damaged. The fixing portion 6 may be made of any material, and a slight gap is provided between the groove 6a and the outer periphery of the needle tube 12, as shown in FIG. 2B, so that the fixing portion 6 can easily move in the length direction of the needle tube 12. It is formed as follows.

The needle base 11 has a needle tube 12 with the cutting edge facing upward.
The needle cover 1 is provided on the outer surface of the small diameter portion 11S of the needle base 11.
The inner surface of the rear part 4 is mounted. That is, it can be pressed against the outer surface of the small diameter portion 11S of the needle base 11 by utilizing the spring action of the bellows of the rear portion 4. The cross section of the needle base 11 may be formed in a substantially circular shape in accordance with the cross section of the mid-abdominal portion 3, or may be formed in a circular shape. A stopper 13 is provided on the outer surface of the large diameter portion 11L of the needle base 11.
The inner surface is detachable or integrally mounted, and the stopper 1
3 is covered from both sides or the outer periphery over the rear part 4 to the rear part of the middle part 3. The shape of the stopper 13 is not limited to the illustrated one (two-way spring shape). In other words, the stopper 13 is formed, for example, as shown in FIG.
When the is contracted in the direction of the needle base 11, the middle abdomen 3 is prevented from returning to the original shape by the locking portion 13a curved forward and inward,
By pressing the bulging side surface of the mid-abdominal portion 13b toward the needle tube 12, the restraint of the contracted mid-abdominal portion 3 by curving outward as shown in FIG. 4 is released and the mid-abdominal portion 3 can be extended to its original shape. Anything that can be performed may be a spring-like one in four directions or a circumferential direction. At the tip of the front part 2, for example, a cap-shaped closing part 5 is detachably or integrally mounted. FIG. 1 and FIG. 2 (A)
The opening / closing portion 5a is mounted on the groove 5c so that the opening / closing portion 5a can slide right and left along a groove 5c (a step 5d is formed in the middle) formed on the top surface of the closing portion 5 as shown in FIG. Stoppers 5b are formed on both sides of the opening / closing portion 5a so as not to come off from the opening 5c. The right stopper 5b
Is locked to the step 5d. In FIG. 2A, when the closing portion 5a is slid to the left, the top surface of the closing portion 5 is opened so that the cutting edge of the needle tube 12 can be exposed, and when returned to the original position, the top surface of the closing portion 5 is closed. As a result, the cutting edge of the needle tube 12 cannot be exposed from the closed portion 5. 2 in place of the closing portion 5
The closing part 5A of (C) can also be used. Closed part 5
A is provided with an opening / closing portion 5e that can be opened / closed via a hinge 5f. When the opening / closing portion 5e is opened via the hinge 5f, the top surface of the closing portion 5A is opened and the cutting edge of the needle tube 12 can be exposed, When the opening / closing portion 5e is closed, the top surface of the closing portion 5A is closed, and the cutting edge of the needle tube 12 cannot be exposed from the closing portion 5A. The closing portion 5 and the closing portion 5A described or illustrated above are merely examples, and any one that can exert the same operation and effect as these can be adopted.

Next, an example of how to use the needle cover 1 and the safety device 10 of the present invention will be described. First, the opening / closing part 5a of the closing part 5 is slid to the left to open the top surface of the closing part 5, and the middle part 3 and the rear part 4 of the needle cover 1 are contracted in the direction of the needle base 11 as shown in FIG. To expose the needle tube 12. At this time, the contracted middle abdomen 3 is sandwiched from outside by the locking portion 13a of the stopper 13 and the middle abdomen 13b, and is prevented from returning to the original shape. After puncturing the needle tube 12 into a patient or the like to collect blood, the middle tube 3 is extended in the direction of the blade edge to cover the needle tube 12 as shown in FIG. At this time, when the middle abdomen 13b of the stopper 13 is pushed toward the needle tube 12 as shown by an arrow B in FIG. 3 to release the holding of the middle abdomen 3 as shown in FIG. 4, the middle abdomen 3 returns to the original shape as shown in FIG. The needle tube 12 is extended and housed in the front part 2 and fixed to the fixing part 6. By sliding the opening / closing portion 5a of the closing portion 5 to the right again to return to the original position, the top surface of the closing portion 5 is closed, and it is possible to prevent the cutting edge of the needle tube 12 from being exposed from the front portion 2. . In addition, it is possible to prevent blood adhering to the cutting edge from leaking from the front part 2.

FIG. 5 is a schematic view of a safety device 10A which is another embodiment of the safety device 10. FIG. 6 is a side view of the use state of the safety device 10A, and FIG. 7 is a schematic view after use of the safety device 10A. The safety device 10A is the safety device 10
A closing portion 15 that can be opened and closed by a hinge 14 is disposed at the tip of the front portion 2 instead of the closing portion 5 (5A).
Fixed part 1 which is connected via a connecting piece 16 (solid line)
7 is mounted in the middle of the mid-abdomen 3. At the time of use, first, as shown in FIG.
The needle tube 12 is exposed by contracting in the direction. At this time, the contracted middle part 3 and rear part 4 are sandwiched by the stopper 13 from the outside so as to be prevented from returning to the original shape, and the fixed part is fixed as the middle part 3 moves toward the needle base 11. 17 also moves in the direction of the needle base 11 and the connecting piece 16 pulls the closing part 15 to open the closing part 15. After the use of the needle tube 12, the middle tube 3 is extended in the direction of the cutting edge to cover the needle tube 12, as shown in FIG. At this time, the middle abdomen 3 is extended and restored to the original shape by releasing the holding by the stopper 13 in the same manner as described above, and the connecting piece 16 is returned to the original position by the fixing portion 17 returning to the original position. The pulling force is released and the closed part 1 is released.
5 can be returned to the original state, and the cutting edge of the needle tube 12 can be prevented from being exposed from the front part 2.

In the safety device 10A, instead of connecting the closing portion 15 to the fixing portion 17 via the connecting piece 16, the closing portion 1
5 through a connecting piece 16A (solid line and broken line).
3 can be connected. In this case, safety device 1
OA can be used as follows. First, as shown in FIG. 6, the middle part 3 and the rear part 4 are contracted in the direction of the needle base 11 to expose the needle tube 12. In this case, the contracted middle part 3 and the rear part 4 are sandwiched by the stopper 13 from the outside, and are prevented from returning to the original shape.
As the needle moves toward the needle base 11, the connecting piece 16A pulls the closing part 15 to open the closing part 15. After the use of the needle tube 12, the middle tube 3 is extended in the direction of the cutting edge to cover the needle tube 12, as shown in FIG. In this case, the middle abdomen 3 is extended and restored to the original shape by releasing the holding by the stopper 13 in the same manner as described above, and the connecting piece 16 is closed by the front portion 2 returning to the original position. Is released, the closing portion 15 returns to its original position, and it is possible to prevent the cutting edge of the needle tube 12 from being exposed from the front portion 2. The closing part 15, the hinge 14, and the connecting piece 16 (16
A), the form of the fixing part 17 and the closing part 15 and the connecting piece 16
A and the stopper 13, the connection form of the closing part 15, the connection piece 16, and the fixing part 17 are merely examples,
When assembling the safety device 10A, the front portion 2 can be closed by the closing portion 15, and when the safety device 10A is used (exposing the needle tube 12), the closing portion 15 can be opened. After using the safety device 10A, the front portion 2 is closed again. Any means can be adopted as long as the means can be closed. 5 to 7, the connecting piece 16 (16A) is used.
Is bent at a right angle on the way,
Can be curved and connected to the closing portion 15 and the fixing portion 17 (stopper 13) so that the opening and closing can be easily performed. In the safety device 10 (10A) of the present invention, the needle tube 12
1 and 5, the tip surface of the needle cover 12 is made to coincide with the curved top surface of the bellows forming the middle part 3 and the rear part 4 of the needle cover 1 as shown in FIGS. Directivity can be given to facilitate puncturing. In addition, a mark indicating the direction of the blade tip surface of the needle tube 12 may be provided on the front surface 2, the middle abdomen 3, or the top surface of the large diameter portion 11 </ b> L of the needle base 11. If necessary, the tip surface of the needle tube 12 is directed downward or to the right or left side, and is aligned with the straight bottom surface or the curved right or left surface of the bellows, and the same mark as above is attached to the front part 2 or It may be attached to the bottom surface, the right side surface, or the left side surface of the middle abdomen 3 or the large diameter portion 11L of the needle base 11.

[0010]

(1) The bellows-like elastic needle cover 1 of the present invention is formed in an extended state, and serves as a needle cap in a normal state, and has a deep bellows shape when a needle is used (needle exposure). The abdomen 3 is compressed in the direction of the needle base and stored near the outer circumference of the needle base 11, and after infusion of blood or blood collection, blood is adhered to the human body by returning to the original shape using a compressed bellows spring. As well as protect against puncture accidents,
It is possible to provide a perfect bellows-like elastic needle cover and a safety device with a needle cover for preventing puncture from the viewpoint of ensuring safety. (2) Since the bellows-like elastic needle cover 1 can simultaneously function as a conventional needle cap and a needle cover, the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic view of a needle cover 1 and a safety device 10 according to the present invention.

2A is a view taken in the direction of arrow A in FIG. 1, and FIG.
A sectional view, (C) is a plan view of a closing portion 5A showing another embodiment of the closing portion 5 of (A).

FIG. 3 is a schematic diagram showing a use state of the needle cover 1 and the safety device 10;

FIG. 4 is a schematic view of the needle cover 1 and the safety device 10 after use.

FIG. 5 is a schematic diagram of a safety device 10A.

FIG. 6 is a schematic diagram of a use state of the safety device 10A.

FIG. 7 is a schematic view after using the safety device 10A.

[Explanation of symbols]

1 bellows-like elastic needle cover (needle cover) 2 front part 3 middle part 4 rear part 5, 5A closing part 5a opening / closing part 5b stopper 5c groove 5d step 5e opening / closing part 5f hinge 6 fixing part 6a groove 10, 10A wrong with needle cover Sting prevention safety device (safety device) 11 Needle base 12 Needle tube 13 Stopper 13a Locking portion 13b Mid abdomen 14 Hinge 15 Closed portion 16, 16A Connecting piece 17 Fixed portion

Claims (7)

[Claims] 1. A front part 2, a middle part 3, and a rear part 4 are separately formed, and the middle part 3 and the rear part 4 are formed in a bellows shape which can be extended and contracted along the length direction of the needle cover. A bellows-like elastic needle cover 1 in which a fixed part 6 of a needle tube 12 is arranged on an inner surface of a front part 2. 2. An openable / closable closing portion 5 at the front end of the front portion 2.
The bellows-shaped elastic needle cover according to claim 1, wherein a stopper (13) for controlling the lengthwise extension and contraction of the needle cover of the mid-abdominal portion (3) is mounted outside the rear portion (4). One. 3. A cross section of the middle part 3 and the rear part 4 is formed in a substantially semicircular shape, and is formed in a substantially semicircular shape that is non-uniform over the length direction of the needle cover. 3. The bellows-like elastic needle cover 1 according to claim 1 or 2. 4. A needle base 11 on which a needle tube 12 is implanted and the needle tube 1
And a needle cover (1) covered with the needle cover (2), the cutting edge base of the needle tube (12) is fixed by a fixing part (6), and a rear part (4).
Is mounted on the small diameter portion 11S of the needle base 11, and the stopper 13 is detachably or integrally mounted on the outer surface of the large diameter portion 11L of the needle base 11. 5. When the mid-abdominal portion 3 is contracted in the direction of the needle base 11 to expose the needle tube 12, the contracted mid-abdominal portion 3 is clamped from the outside by the stopper 13 and is prevented from returning to the original shape. When covering the needle tube 12 by extending the mid-abdomen 3 in the direction of the cutting edge, by releasing the holding by the stopper 13,
The safety device for preventing puncture with a needle cover according to claim 4, wherein the mid-abdominal portion (3) extends to its original shape and is formed so as to prevent the cutting edge of the needle tube (12) from being exposed from the front portion (2). 10. 6. A needle base 11 on which a needle tube 12 is implanted and the needle tube 1
And a needle cover (1) covered with the needle cover (1) according to any one of claims 1 to 3.
And a closing part 15 that can be opened and closed via the
Is connected to the fixing portion 17 via the connecting piece 16, and the fixing portion 17
When the middle abdomen 3 is attached in the middle of the middle abdomen 3, and the middle abdomen 3 is contracted in the direction of the needle base 11 to expose the needle tube 12, the contracted middle abdomen 3 is sandwiched by the stopper 13 from the outside and returns to the original shape. Is fixed, and as the mid-abdomen 3 moves toward the needle base 11,
When the connecting piece 16 also pulls the closing part 15 to open the closing part 15 by moving, and when the middle abdomen 3 is extended in the direction of the cutting edge to cover the needle tube 12, the holding by the stopper 13 is released. The mid-abdominal portion 3 is stretched and restored to its original shape, and the fixing portion 17 returns to the original position, so that the force of the connecting piece 16 pulling the closing portion 15 is released, and the closing portion 15 returns to its original position. The safety device 10A with a needle cover for preventing erroneous insertion, wherein the safety device 10A is formed so as to suppress the exposure from the front part 2. 7. A needle base 11 on which a needle tube 12 is implanted and the needle tube 1
And a needle cover (1) covered with the needle cover (1) according to any one of claims 1 to 3.
And a closing part 15 that can be opened and closed via the
Is connected to the distal end of the stopper 13 via the connecting piece 16A, and when the middle abdomen 3 is contracted toward the needle base 11 to expose the needle tube 12, the contracted middle abdomen 3 is held by the stopper 13 from the outside. As the tip 2 and the mid-abdomen 3 move toward the needle base 11, the connecting piece 16 A pulls the closure 15 to open the closure 15, and the middle abdomen 3 is When the needle tube 12 is covered by extending in the direction, the middle abdomen 3 is extended and restored to the original shape by releasing the holding by the stopper 13, and the connecting piece 16 is returned by returning the front portion 2 to the original position. Is released, and the closing portion 15 returns to its original state.
A safety device for preventing erroneous insertion 10A with a needle cover, wherein the blade tip of the needle tube 12 is formed so as to be prevented from being exposed from the front part 2.