JPH0680429U - Blood collection needle removal device - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a device that can be easily and safely removed in a short time without a medical staff directly touching a used blood collection needle. A main body of the external gear, wherein a pair of external gears that mesh with a drive gear that interlocks with a drive motor provided inside the main body engage a plurality of pinching portions formed close to each other at regular intervals. A U-shaped guide groove is provided on each of the upper portions. Further, a drive gear driven by a drive motor provided on one side inside the main body and a driven gear located at the center of the main body and provided with an engagement hole at the center are engaged with each other, and a through hole and a holder receiving portion are provided at the center. And a through hole of the holder base and a meshing hole of the driven gear are aligned with each other at the center of the upper surface of the main body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a needle exterior device for automatically removing a blood collection needle used for blood tests and the like from a holder.

[0002]

[Prior art]

 Conventionally, in blood tests performed in hospitals or clinics, it is necessary to be very careful in removing a used blood collection needle, and should a used blood collection needle be used by a doctor, nurse, etc. If the skin of a healthcare worker is scratched, hepatitis, AIDS, and other pathogenic bacteria may be infected. In particular, in mass screenings in which many people are tested at one time, the blood collection needle is made disposable each time it is used, in order to prevent infection of pathogenic bacteria to third parties. In addition, since a vacuum blood sampler is used for blood collection and a new blood collection needle is attached to the special holder, it takes time to attach and detach the blood collection needle. Therefore, if the blood collection needle is quickly attached or detached, a medical worker often accidentally stabs a used blood collection needle into his or her finger or the like and is injured, and there is a risk of being infected with pathogenic bacteria. Moreover, for the safety of people involved in the treatment of medical waste, the needle has recently been removed from the holder and discarded.

There is used a blood sampling needle removing device that allows a medical staff to remove the blood sampling needle from the holder without directly touching the used blood sampling needle. However, in this blood collection needle removal device, a used blood collection needle is inserted into an insertion hole provided on the upper surface of a container body (not shown) and held by the chuck device 81 (FIG. 16). The chuck device 81 is configured by providing a concave groove portion 84 into which the blade portion 69 of the blood sampling needle 66 is fitted, on the inner surface of the chak piece 83 divided into a plurality of pieces and arranged on the same circumference. After inserting the blood collecting needle 66 from the insertion hole, the blade portions 69 of the blood collecting needle 66 are aligned with the concave groove portions 84 of the chuck piece 83 as shown in FIGS. 14 and 15, and the collar portion 67 of the blood collecting needle is placed at the upper end of the concave groove portion 84. Then, the chuck device 81 is rotated by a motor to separate the screw groove portion 64 of the blood collecting needle 66 from the screw groove portion 64 of the holder 63. After the blood collection needle 66 is detached from the holder 63, the chuck pieces 83 are expanded in the centrifugal direction so that the outer diameter of the collar portion 67 is larger than the inner diameter of the groove portion 84, and the collar portion 84 is removed from the groove portion 84. The blood collection needle 66 falls under its own weight and is housed in the container.

[0004]

[Problems to be solved by the device]

 The conventional blood collection needle removal device has many problems as described below. To remove the blood collecting needle 66, after the blade portion 69 of the blood collecting needle 66 is fitted into the concave groove portion 84 of the chuck piece 83, the chuck device 81 is rotated to remove the blood collecting needle 66 from the holder 63. Since the outer diameter of the collar portion 67 of the blood collecting needle is larger than the outer diameter of the blade portion, when the chuck pieces 83 are expanded in the centrifugal direction and the inner diameter of the concave groove portion 84 becomes larger than the outer diameter of the collar portion 67, the blood collecting needle 66 It takes a considerable amount of time to remove a single blood collection needle because the locking part of the device falls off the chuck device 81 and is stored in a container. It takes a lot of time and is inefficient. Since the chuck mechanism of the blood sampling needle removing device rotates or moves in the centrifugal direction, it has a complicated structure and a high degree of operation, is expensive and uneconomical, and is easily inconvenient because of failure. When the blood sampling needle removing device is used, it is difficult to match the blade portion 69 of the used blood sampling needle with the concave groove portion 84 of the chuck device 81. Therefore, the blade root portion 69 is aligned while looking at the concave groove portion 84. It takes time to fit and it is inefficient. The present invention has been made in view of such problems in the past, and an object thereof is to easily and safely remove a used blood sampling needle without a medical staff directly touching it. A device that can be used is provided.

[0005]

[Means for Solving the Problems]

 According to the present invention, a pair of external gears that mesh with a drive gear that interlocks with a drive motor provided inside the main body are brought into mesh with a plurality of pinching portions that are formed close to each other. U-shaped guide grooves are provided on the upper part of the main body. Further, a drive gear driven by a drive motor provided on one side of the inside of the main body and a driven gear located at the center of the main body and provided with an engagement hole at the center are engaged with each other, and a through hole and a holder receiving portion are provided at the center. The holder base having the above is provided at the center of the upper surface of the main body such that the through hole of the holder base and the meshing hole of the driven gear are aligned with each other. Further, a drive gear driven by a drive motor provided on one side of the inside of the main body and a driven gear having a mounting hole in the center are meshed with each other, and a hexagonal hole is provided at the tip of each facing movable piece. A long groove is provided at the center and a large diameter part is provided at the rear end.The hexagonal holes provided at the tip of the movable piece are slidably overlapped with each other and springed into the slide grooves provided at the center of the rotating disk. The housed rotary disk is attached to the upper part of the driven gear, and the movable piece of the rotary disk is mounted so as to be movable back and forth by the rotation of the driven gear.

[0006]

[Action]

 Insert the blade part of the used blood sampling needle screwed into the holder into the main body from the notch groove side of the main body along the guide groove part, and place the blade part inside the pinching part of the external needle gear to rotate the needle. The rack part of the external gear meshes with the blade part to rotate the blade part, and the screw part of the blood sampling needle separates from the screw part of the holder, so remove the blood sampling needle from the holder without touching it directly. You can Also, when the holder is inserted into the holder receiving part of the holder base, after the collar part of the blood sampling needle is positioned inside the meshing hole of the driven gear, the driven gear is rotated so that the collar part rotates together with the driven gear. However, since the threaded portion of the blood sampling needle is disengaged from the threaded portion of the holder, the blood sampling needle can be removed from the holder without directly touching it. Furthermore, when the blade of the blood sampling needle is positioned within the hexagonal holes of a pair of movable pieces in which the hexagonal holes provided at the tip of the movable piece are overlapped with each other, the driven gear is rotated to cause centrifugal force. The movable piece mounted on the rotating disk moves in the centrifugal direction to narrow the hexagonal holes of each other, and the blades located in the hexagonal holes are clamped and rotated, and the screw of the blood sampling needle is screwed from the screw part of the holder. Since the part is detached, the blood collection needle can be removed from the holder without directly touching it.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment of the present invention, in which a first needle device 1 is provided with a notched groove portion 3 on both upper sides of a substantially rectangular main body 2, and inside the main body. An accommodating container (not shown) for accommodating a used blood collecting needle 66, which will be described later, is accommodated. A drive motor 5 is located at the center of the inside of the main body, and a large-diameter drive gear 6 is mounted above the drive motor 5. Reference numeral 7 designates a pair of driven gears which are brought close to each other, and an external gear which is formed with the gear and the rack portion of the gear as a sandwiching portion 8 which is rotatably meshed with the drive gear 6. Reference numeral 11 denotes a guide portion piece attached to the upper surface of the main body, and a U-shaped guide groove portion 12 which is open at one side in the center is provided through a step portion 13, and an opening portion 14 of the guide groove portion and a notch of the main body are provided. The groove 3 is matched.

FIG. 5 shows a second needle device 17 showing a second embodiment, which has a large diameter above a drive motor (not shown) provided at the center of the inside of a main body 18 formed in a substantially cylindrical shape. A drive gear 20 is attached, a plurality of the external gears 7 described above are meshed with the drive gear at regular intervals, and the upper gear edge of the main body 18 is aligned with the pinching portion 8 of the external gear at regular intervals. A plurality of guide pieces 11 are formed in the notched groove portion 19 provided.

6 to 9 show a third extra-needle device 25 of the third embodiment, in which a drive gear 28 is attached to a drive motor 27 provided on one side inside a main body 26 formed in a substantially rectangular shape. The driven gear 31 is attached to the rotatably rotatably supported rotating cylinder 30 in the shaft support portion 29 provided above the main body 26, the driven gear 31 is meshed with the drive gear 28, and the meshing hole 34 is formed in the center. The supporting cylinder 33 is attached to the hole 32 provided in the center of the driven gear 31. Reference numeral 36 denotes a holder base attached to the opening 26a provided at the center of the upper surface of the main body 26. A holder receiving portion 37 for fitting the through hole 39 and the holder 63 is provided at the center through a step 38, and the upper surface of the step is provided. A pressure contact switch (not shown) is provided in the. Reference numeral 40 denotes an accommodating container which is positioned substantially in the center of the main body 26 and accommodates a used blood collection needle.

FIGS. 10 to 11 show a fourth extra-needle device 41 showing a fourth embodiment, which is a drive gear 43 attached to a drive motor 42 provided on one inner side of a frame (not shown), A driven gear 45, which is rotatably supported, is engaged with a bearing portion 44 provided in the center of the frame body, and a rotary disk 46 is attached to the upper portion of the driven gear 45. A communication hole 47 communicating with a hole 45a provided in the center of the driven gear 45 is provided at the center of the rotary disk 46, and a slide groove 48 positioned at a right angle to the communication hole 47 is provided at the center of the upper surface. A pin 49 is provided at the center of both ends of the.

Reference numerals 51a and 51b denote a pair of movable pieces housed in the slide groove 48 of the rotary disk 46. One movable piece 51a has a hexagonal hole 52 at the tip, and the other movable piece 51b has a hexagonal end at the tip. The holes 53 are provided respectively, and a long groove 55 through which the spring 56 and the pin 49 are inserted is provided at the center, and a large diameter portion 57 which serves as a stopper is provided at the rear end. The movable piece 51 slidably fits the hexagonal holes 52 and 53 provided at the tips of the movable pieces 51 to accommodate the pins 49 in the slide grooves 48 of the rotary disk 46 in the long grooves 55, and The entire movable piece 51 except for the large diameter portion 57 is slidably inserted into the slide groove 48, and the spring 56 is accommodated in the long groove 55 to elastically move the movable pieces 51a and 51b toward the center. . Reference numeral 59 is a lid plate attached to the upper surface of the turntable, and an insertion hole 60 through which a blood collection needle 66 is inserted is provided in the center.

In FIGS. 14 and 15, reference numeral 66 is a blood collecting needle attached to the holder 63, and a screw portion 68 is provided above the flange portion 67 provided at the substantially center, and a blade portion 69 having a cross-shaped cross section is provided below the flange portion. In addition to being installed, a needle portion 70 is provided at the tip.

The operation of the embodiment will be described below. When the extra-needle device 1 of the first embodiment is used, the used blood collecting needle 66 attached to the holder 63 shown in FIG. 6 is guided together with the holder 63 from the notch groove portion 3 of the main body 2 shown in FIGS. It is inserted into the main body 2 along the groove 12. When the holder 63 is moved to the back of the guide groove portion 12 and reaches the deep portion of the guide groove portion 12, the blade portion 69 of the blood sampling needle 66 is sometimes located in the pinching portion 8 of the external gear 7, and the blade portion 69 is pinched. The rotational force of the external gear 7 that rotates in the direction opposite to the rotational direction of the drive gear 6 by the rotation of the drive gear 6 that is driven by the drive motor 5 and that meshes with the racks of the two gears that form the portion 8. By this, the blades 69 rotate in opposite directions (the direction in which the screw is unscrewed), so that the screw 68 of the blood sampling needle 66 can be removed from the screw groove 64 of the holder 63.

The blood collecting needle 66 detached from the holder 63 is detached from the rack of the holding portion 8 and falls by its own weight and is accommodated in the accommodating container accommodated in the main body. The blood collection needle 66 can be removed by a simple operation without directly touching the hand, and infection of the medical staff with pathogenic bacteria can be prevented.

The extra-needle device 17 of the second embodiment is configured so that a large number of blood sampling needles 66 can be removed at a time, and a large number of the extraneous gears 7 are meshed around the drive gear 20 at regular intervals. The method of use is the same as the extra-needle device 1 of the first embodiment.

When the extra-needle device 25 of the third embodiment is used, when the used blood collecting needle 66 is inserted into the inside from the holder base 36 on the upper surface of the main body 26 together with the holder 63, the holder 63 receives the holder receiving portion 37 and the blood collecting needle. The flange portion 67 of 66 meshes with the meshing hole 34 of the driven gear 31. Next, when the holder 63 is pressed toward the main body, the driving motor 27 is turned on by the pressure contact switch (not shown) provided on the stepped portion 38 of the holder receiving portion 37, and the driven gear 31 is driven by the driving force of the driving gear 28. The collar portion 67 of the blood sampling needle 66 that is rotated and meshed with the meshing hole 34 also rotates, and the blood sampling needle 66 can be removed from the thread groove portion 64 of the holder 63. At this time, since the holder 63 is constantly pressed by the holder receiving portion 37, the blood collecting needle 66 descends while rotating along the thread groove portion 64, and when the collar portion 67 comes out of the meshing hole 34, it passes through the hole. Since it falls by its own weight and falls into the needle container 40 contained in the main body, the medical staff can remove it without directly touching it. Furthermore, when the holder 63 is separated from the holder receiving portion 37 after the blood collection needle 66 has dropped, the pressure switch is turned off and the rotation of the drive motor 27 is stopped, so that no unnecessary power is consumed and it is economical. Is.

Next, when the extra-needle device 41 of the fourth embodiment is used, the blade portion 69 of the used blood sampling needle 66 is inserted from the insertion hole 60 to the hexagonal hole 52 provided in the movable piece 51a and the other movable piece 51b. It is located in the hexagonal hole 53 provided, the switch is turned on to rotate the drive motor 42, the driven gear 45 is rotated via the drive gear 43, and the rotary disk 46 is rotated by the rotation of the driven gear. When the generated centrifugal force causes the movable pieces 51a and 51b to be pulled in the centrifugal direction by the centrifugal force of the turntable 46, the overlapping hexagonal holes 52 and 53 of the movable pieces are pulled in the opposite directions, respectively. The blade 69 can be clamped at the edge of the hexagonal hole, and at the same time, the blood collecting needle can be rotated and removed from the thread groove 64 of the holder 63. After removing the blood collection needle 66 from the holder 63, the switch is set to OF F to stop the drive motor 42, and the rotation of the turntable 46 of the driven gear 45 is stopped, so that the movable piece 51 receives the spring 56 housed in the long groove 55. The movable pieces 51a, 51b slide in the centripetal direction due to the elastic force of the blades, and the hexagonal holes 52, 53 expand to release the clamping force of the blade portion 69, and the blood collecting needle 66 falls downward by its own weight and is accommodated. It is housed in a container.

[0018]

[Effect of device]

 The present invention has the following effects. A used blood collection needle can be easily screwed into the holder in a short time simply by supporting and rotating the used blood collection needle in the pinching portion of the external gear, the meshing hole of the driven gear or the hexagonal hole of the movable piece. Since it is possible to remove the blood sampling needle, it is possible to remove the blood sampling needle efficiently in a short time when collecting blood from a large number of people such as in mass screening. Since it is possible to remove the blood collection needle and store it in the container without directly touching the used blood collection needle, it is safe to prevent infection of pathogens to medical personnel. It is only necessary to rotate the drive gear driven by the drive motor by meshing the external gear with the pinching portion, the driven gear with the meshing hole, or the driven gear with the rotary disk with the movable piece. Due to the simple structure, the manufacturing cost is low, there are few failures, and it can be used for a long time, which is economical.

[Brief description of drawings]

FIG. 1 is a plan view showing an out-needle device according to a first embodiment of the present invention.

FIG. 2 is a partially omitted front view showing a notch groove and a guide groove portion provided in the main body of the first embodiment.

FIG. 3 is a perspective view of essential parts showing a state where a blood collection needle is removed from a holder by a drive gear and an external needle gear according to the first embodiment.

FIG. 4 is an enlarged plan view of an essential part showing a state where a blood collection needle is removed from a holder by a drive gear and an external needle gear according to the first embodiment.

FIG. 5 is a partially cutaway plan view showing an extra-needle device according to a second embodiment of the present invention.

FIG. 6 is a plan view showing an out-needle device according to a third embodiment of the present invention.

FIG. 7 is a partially broken side view showing a partially broken outer needle device of a third embodiment.

FIG. 8 is a perspective view showing a meshing state of a drive gear and a driven gear according to a third embodiment.

FIG. 9 is an enlarged sectional view of an essential part of a state where a blood collecting needle is meshed with a meshing hole of a driven gear according to a third embodiment.

FIG. 10 is an enlarged sectional view of an essential part showing a fourth embodiment of the present invention.

FIG. 11 is a perspective view of a turntable according to a fourth embodiment.

FIG. 12 is a plan view of a state where a turntable of a fourth embodiment rotates to operate a movable piece.

FIG. 13 is a plan view showing a state before operation of a movable piece attached to a turntable of a fourth embodiment.

FIG. 14 is a partially cutaway front view of a holder equipped with a blood collection needle.

15 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 16 is an enlarged cross-sectional view of an essential part of a chuck device used in a conventional extra-needle device.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE CHARACTERS 1 Needle device 2 of the first embodiment 2 Main body 3 Notch groove 5 Drive motor 6 Drive gear 7 Needle gear 8 Pinching part 11 Guide part 17 17 Needle device 18 of the second embodiment 25 Main body 25 of the third embodiment Extra needle device 26 Main body 30 Rotating cylinder 31 Driven gear 34 Engagement hole 36 Holder base 41 Needle outside device of the fourth embodiment 45 Driven gear 46 Rotating plate 51 Moving piece 63 Holder 66 Blood sampling needle

Claims (3)

[Scope of utility model registration request] 1. A pair of external gears that mesh with a drive gear that interlocks with a drive motor provided inside a main body, and a plurality of pinching portions that are formed close to each other are provided at fixed intervals. A blood sampling needle removing device, wherein U-shaped guide groove portions are provided on the upper part of the main body. 2. A drive gear driven by a drive motor provided on one side of the inside of the main body and a driven gear having a meshing hole at the center of the main body are meshed with each other, and a through hole is formed at the center. A blood collecting needle removing device, wherein a holder base having a holder receiving portion is attached such that a through hole of the holder base and a meshing hole of the driven gear are aligned at the center of an upper surface of the main body. 3. A drive gear driven by a drive motor provided on one inner side of the main body and a driven gear having a mounting hole at the center are meshed with each other, and hexagonal holes are provided at the tips of the movable pieces facing each other. At the same time, a long groove is provided at the center and a large diameter portion is provided at the rear end, and hexagonal holes provided at the tip of the movable piece are slidably overlapped with each other, and each spring is resiliently springed into a slide groove provided in the center of the rotating disk. A blood sampling needle removing device, characterized in that the rotating disk accommodated therein is attached to an upper portion of the driven gear, and a movable piece of the rotating disk is attached so as to be movable back and forth by rotation of the driven gear.