KR102277465B1 - Blood lancet - Google Patents

Abstract

An object of the present invention is to provide a blood collection device that is free from pain due to blood collection and fatigue caused by repeated blood collection, and which is hygienically safe. In the blood collection apparatus, a barrel having a tip opening, and being accommodated in the barrel, a striking sliding toward the tip opening A body unit including a moving and retractable striking member, a striking driving unit for applying a striking force to the striking member, a mounting unit detachably coupled to the tip opening region, and a piercing hole provided opposite the mounting unit; A cap body, an immersion support body slidably accommodated in the cap body by the blow of the perforator member, and a needle member mounted on the tip of the submerged support body and having a needle exposed through the needle penetrating hole, and the submerged support body It is characterized in that it has a cap unit including a pain-free spring that is coupled to the tip of the needle and is exposed through the needle-through hole to elastically pressurize the skin of the recipient.

Description

Blood collection machine {BLOOD LANCET}

The present invention relates to a blood collection device.

Instruments for collecting blood by making a hole in the skin with a needle are being developed. In the process of making a hole in such a conventional lancet device, the operator suffered pain, and the operator continuously fired the lancet several times in one area with the power of his finger, resulting in a lot of fatigue.

In addition, when a large number of blood samples are to be collected on a certain site, the blood of the recipient is stained on the front end of the cap of the blood collection device, which is a problem in terms of hygiene.

Accordingly, it is an object of the present invention to provide a blood sampling device that is free from pain for the operator due to blood collection, the operator does not feel fatigue due to repeated blood collection, and is sanitarily safe.

The above object is, in the blood sampling machine according to the present invention, a barrel having a tip opening, a punching member accommodated in the barrel and capable of striking sliding movement and retraction toward the tip opening, and a striking driving part for applying a striking force to the punching member A body unit comprising a, a mounting port detachably coupled to the tip opening region, a cap body having a penetrating hole provided to face the mounting port, and a slidable within the cap body by the blow of the perforator member A needle member having an immersion support accommodated therein, a needle mounted on the tip of the immersion support and exposed through the needle penetration hole, coupled to the tip of the immersion support and exposed through the needle passage hole, and burnt on the skin of the recipient It is achieved by a blood collection device, characterized in that it has a cap unit comprising a painless spring that can be in sexual pressure contact.

Here, the cap body preferably has a locking protrusion for preventing the submerged support body from being separated in the direction of the mounting hole.

In addition, the repeated use of the submerged support body through a return spring disposed in the cap body and elastically pushing the submerged support body in the opposite direction to the striking direction with respect to the cap body, and the painless spring impacts the skin and compresses the skin. In the process of blocking nerves and returning to inertia after the needle breaks through the skin, the pain-free spring and the return spring simultaneously restore the needle member, allowing the needle to fall out of the skin faster and maximize the pain-free effect.

In addition, the return spring can maximize the pain-free effect by making the pitch of the second half larger than the first half along the striking direction so that the needle member returns to the original state more quickly after the skin is punctured.

The blood sampler according to the present invention does not cause pain for the operator due to blood collection, and the operator does not feel fatigue due to repeated blood collection, and is safe for hygiene.

1 is a cross-sectional perspective view of a blood collection device according to the present invention.
2 is a cross-sectional view of the cap unit.
3 (a) and (b) are views showing the operation of the blood sampling machine according to the present invention.
4 (a) to (d) are cross-sectional views of the cap unit showing the process of collecting blood.
5 is a view showing a return spring according to another embodiment.

Hereinafter, a blood sampling device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional perspective view of a blood collection device according to the present invention, and FIG. 2 is a cross-sectional view of the cap unit 200 . The blood sampling device according to the present invention is largely composed of a body unit 100 and a cap unit 200, and in the drawings, the cap unit 200 is located on the left side and the body unit 100 is located on the right side.

The body unit 100 has a tip opening 111 at the front end, a cylindrical sliding hole extending from the tip opening 111, a barrel 110 having an accommodating space therein, and a front end accommodated in the barrel 110 . It consists of a striking sliding movement toward the opening 111 and a retractable striking member 120, and a striking driving unit 130 for applying a striking force to the rear end of the striking member 120.

The tool member 120 has a cylindrical shape and at least a partial area slides along the sliding hole. The rear end of the ball member 120 has a region formed by being depressed inwardly and extending by a predetermined distance, and the ball return spring 121 is installed in this region. One side of the ball return spring 121 is fixed to the ball member 120 and the other end is fixed to the jaw protruding from the inner surface of the sliding hole toward the axis of the barrel 110 . Therefore, the tool member 120 moves in the direction of the tip opening 111 when receiving an external force, and returns to its original position due to the tool return spring 121 when the external force is removed.

The striking driving unit 130 applies an external force to the rear end of the striking member 120 so that the striking member 120 can slide, and the striking member 132 arranged to coincide with the axis of the striking member 120 and the striking A solenoid driving unit 131 that slides the member 132 so that the striking member 132 hits the rear end of the tool member 120, a control unit 150 for controlling the solenoid driving unit 131, and a control unit 150 and a battery unit 160 for supplying power to the solenoid driving unit 131 and a switch 140 for operating the striking driving unit 130 .

At this time, the striking member 132 is disposed to penetrate the solenoid driving unit 131, and when the solenoid driving unit 131 operates, it strikes the rear end of the ball member 120, and the solenoid driving unit 131 is not operated. It is fixed to this solenoid part and the other side is returned to the state before hitting by the striking member return spring 133 fixed to the end of the striking member 132 .

Due to the above configuration, when the operator presses the switch 140, the solenoid driving unit 131 is operated so that the striking member 132 strikes the rear end of the punching member 120, which causes the punching member 120 to move forward ( to the left in the drawing). After that, if the solenoid driving unit 131 does not operate, the striking member 132 returns to its original state by the striking member return spring 133 , and the striker member 120 returns to its original state by the ball return spring 121 .

Here, the control unit 150 may control the operation timing of the solenoid driving unit 131 through the operation of the switch 140 . That is, by pressing the switch 140 once, the ball member 120 can be repeatedly moved forward several times for a predetermined time.

On the other hand, the barrel 110, as shown, a separate connection member 112 may be coupled to the front end. This connection member 112 has a higher strength than other parts of the barrel 110 or the cap unit 200 to be described later. In the present invention, the cap unit 200 is installed at the tip of the main body unit 100 and after use, the cap unit 200 is broken and discarded to ensure the overall sanitary condition of the blood collection machine. Therefore, it is preferable that the connecting member 112 has a higher strength than the cap unit 200 , and considering that the barrel 110 or the cap unit 200 is manufactured by plastic injection, the strength is higher than that of plastic such as aluminum. It is preferably made of material. At this time, the tip opening 111 of the barrel 110 is formed in the tip region of the connecting member 112 .

The cap unit 200 is detachably coupled to the front end of the body unit 100 , and a mounting hole 201 removably coupled to the tip opening 111 region, and a needle tube provided opposite to the mounting hole 201 . The cap body 210 having the perforation 202, the submerged support 220 that is slidably accommodated in the cap body 210 by the blow of the ball member 120, and the submerged support 220 are mounted on the tip of the cap body 210 The needle member 230 having a needle 231 that can be exposed through the needle penetrating hole 202 and the tip of the dip support 220 is coupled to the needle penetrating hole 202 and exposed through the needle penetrating hole 202 to expose the skin (a) of the recipient ), which is disposed in the painless spring 240 and the cap body 210 that can be in elastic pressure contact with the cap body 210, and a return spring that elastically pushes the submerged support body 220 in the opposite direction to the striking direction with respect to the cap body 210 ( 250).

The mounting hole 201 has an inner diameter similar to the outer diameter of the area of the tip opening 111 of the barrel 110 . Accordingly, the tip opening 111 area is fitted into the mounting hole 201 , and the cap unit 200 and the body unit 100 are coupled. This mounting hole 201 is prepared of a material that has a certain elasticity and is easily brittle. When the cap unit 200 is replaced, the cap unit 200 is bent in the horizontal direction with respect to the axis of the barrel 110 to the mounting hole 201 ) to break the coupling between the cap unit 200 and the body unit 100 is released.

The cap body 210 has a penetrating hole 202 at the front end, and a mounting hole 201 is formed at the rear end. The cap body 210 has an accommodating space elongated along the longitudinal direction therein, and the submerged support 220 is inserted into the accommodating space.

The submerged support body 220 has a rear end area hit by the hole member 120 and slides and returns in the cap body 210 in the direction of the penetrating hole 202 . The submerged support 220 has a return spring support jaw 222 protruding in the circumferential direction in the rear end area, has a painless spring support jaw 221 protruding in the circumferential direction in the middle area, and recessed inward in the front end area. It has a needle member mounting portion 223 for accommodating the needle member 230 .

The return spring 250 is installed so that one side is fixed inside the cap body 210, the other side is fixed to the return spring support jaw 222, and the painless spring 240 has one side on the painless spring support jaw 221. It is fixed and the other side faces the needle through hole 202 . The inner diameter of the return spring 250 is formed larger than the outer diameter of the painless spring 240 , so that a portion of the painless spring 240 when not compressed is located inside the return spring 250 .

A needle 231 is installed at the front end of the needle member 230 , and the rear end of the needle member 230 is coupled to the needle member mounting part 223 . At this time, the tip of the needle is located on the inner side than the tip of the painless spring (240). That is, the rear end of the immersion support 220 is hit by the hole member 120 so that the immersion support 220 moves in the direction of the needle passage hole 202 and comes into contact with the patient's skin (a), the painless spring 240 ) first comes into contact with the skin (a), and then, in the process of the painless spring 240 being compressed, the needle makes a hole in the skin (a) to the recipient. At this time, since the painless spring 240 impacts the surrounding skin (a) to be pricked by the needle and compresses it to block the nerve, and the compressed painless spring 240 is decompressed and falls out quickly, a painless effect occurs.

When the cap unit 200 is largely divided as described above, it can be divided into a cap body 210 and an immersion support 220, and even in the process of assembling the cap unit 200, the cap body 210 and the immersion support 220. After preparing separately, they are made by combining the two, and at this time, a stopper for preventing the submerged support 220 from being separated in the direction of the mounting hole 201 of the cap body 210 is required.

As shown in FIG. 2 , the stopper may be prepared as a stopping protrusion 211 protruding a predetermined distance from the inner surface of the cap body 210 toward the axis of the cap body 210 . This locking projection 211 has an inner diameter smaller than the diameter of the return spring support projection 222 of the submerged support 220 . That is, when the submerged support 220 moves from the mounting hole 201 direction of the cap body 210 to the needle through hole 202 direction and is coupled to the inside of the cap body 210, the area of the return spring support jaw 222 It is elastically compressed and passes through the locking jaw 211 , and is elastically returned after passing through the locking jaw 211 to be positioned inside the cap body 210 . Through this configuration, the submerged support 220 is not separated from the inside of the cap body 210 in the direction of the mounting hole 201 .

Next, the operation of the blood sampling machine will be briefly described with reference to FIG. 3 . 3 (a) and (b) show when the blood sampling device is not used and when it is used, respectively. As shown in Fig. 3 (a), when not in use, all the elastic members of the blood sampling machine are in an uncompressed state, and the submerged support 220 and the punching member 120, the punching member 120 and the striking member ( 132) is prepared in a form to safely protect the elastic force of the spring by maintaining a predetermined distance between. In addition, these separation distances make assembly easier.

If, as shown in (b) of Figure 3, when the operator presses the switch 140, the solenoid driving unit 131 moves the striking member 132 in the striking direction, and the striking member 132 is a ball member By striking the rear end of (120), the ball member 120 is moved in the direction of the penetrating hole 202, and the penetrating member 120 strikes the rear end of the submerged support body 220 to pass through the submerged support body 220. It moves in the direction of the ball 202 . In this process, the needle of the needle member 230 coupled to the front end of the immersion support 220 protrudes to the outside of the needle through hole 202 to make a hole in the skin (a) of the recipient.

And, when this series of processes is finished, the solenoid driving unit 131 removes the force to move the striking member 132, and the striking member 132 is formed by the striking member return spring 133, the punching member 120. By the ball return spring 121, the submerged support 220 is returned to its original position by the return spring 250.

Hereinafter, a process of collecting blood will be described in more detail with reference to FIGS. 4 (a) to (d). 4 is only shown in the configuration related to the cap unit 200, the ball member 120 hitting the rear end of the submerged support 220 is omitted. In addition, it is assumed that the front end of the needle penetrating hole 202 of the cap unit 200 is actually used in contact with the skin (a) of the recipient.

As shown in Figure 4 (a), the submerged support 220 in the standby state, as shown in Figure 4 (b), the ball member 120 is moved forward by striking the rear end of the submerged support (220). . At this time, the painless spring 240 is first in contact with the skin (a) of the recipient, and is compressed at a predetermined interval according to the continuous movement of the immersion support 220 . At this time, the return spring 250 is also compressed at a predetermined interval. After that, as shown in FIG. 4(c), as the immersion support 220 continuously moves, the needle 231 penetrates the skin (a) of the recipient and makes a hole in the skin (a). In this state, the painless spring 240 is already sufficiently compressed, and the return spring 250 is compressed to the maximum. And, as shown in (d) of FIG. 4, when a hole is generated in the skin (a) of the recipient and the blood (b) comes out and becomes a state in which blood collection can be performed, the immersion support 220 is a painless spring ( 240) and the return spring 250 returns to the rear again by the elastic restoration, and the ball member 120 returns to the state before hitting the rear end of the submerged support body 220 .

The present invention makes a hole in the skin of the person to be treated with the above configuration and operation, and blood is collected through the blood (b) from it, and in the process of making a hole in the skin (a), a painless spring ( 231 ) rather than a needle ( 231 ) Because 240) is first in contact with the person's skin (a) and pressurized, this causes the recipient to not feel the pain that occurs when the needle 231 makes a hole in the skin (a). This pain-free principle is generated by pressing the periphery of the area where the pain-free spring 240 is in contact with the skin (a) and the needle 231 digs in. All skin senses are divided into tactile sensation and pain sensation, and the stimulated signal is transmitted to the center. It is transmitted to the brain along the neurospinal cord, and the speed at which the sense of touch is transmitted to the brain is 3 to 100 times faster than the speed of transmission of pain that occurs when the needle 231 penetrates the skin (a), so the human brain prefers the sense of touch to the sense of touch. This is the principle that the sense of touch interferes with the nociception transmitted during the recognition of the sense of touch at the entrance to the brain. (Gate control theory published in 1965)

Sensing these tactile and nociceptive sensations can be applied differently depending on the person. In order for most patients to be able to draw blood without pain, the painless spring 240 is in pressurized contact with the skin (a), and the needle 231 is placed in contact with the skin (a). ), and then the needle 231 should be separated from the skin (a) as quickly as possible. That is, the faster the needle 231 penetrates and comes out of the skin a, the shorter the time it takes to feel pain, so that the sense of touch can effectively replace pain.

Therefore, the return spring 250 according to the present invention not only serves to simply return the submerged support 220, but also rapidly restores the hit and moved submerged support 220 to the state before hitting, thereby minimizing the time for pain sensation to occur. will play a role

Applicants of the present invention are fully aware that if the return spring 250 and the pain-free spring 240 are properly adjusted, the blood collection device can be made without feeling more pain and no objection to use.

For example, as shown in FIG. 5 , the shape of the return spring 250a may be made such that the pitch increases in the direction of the penetrating hole 202 so that the elastic modulus of the second half is higher than that of the first half. In this case, in the process where the ball member 120 strikes the rear end of the submerged support body 220 and the submerged support 220 moves to the penetrating hole 202, the narrow-pitch region is mainly compressed and the submerged support 220 is pressed. By minimizing the pushing force in the direction of the tool member 120, the negative influence of the return spring 250a in the process for blood collection is minimized, and the pitch is increased while the needle 231 digs into the skin (a). The area is compressed so that the return spring 250a can push the submerged support 220 in the direction of the punching member 120 as quickly as possible so that the needle 231 is more rapidly separated from the skin (a) of the person.

On the other hand, as described above, the blood sampling device according to the present invention can adjust the operation timing of the blood collection device by using the control unit 150. While the switch 140 is pressed, the striking member 132 repeatedly moves and returns. As a result, it is possible to make a number of holes in the skin (a) in contact with the tip of the penetrating hole 202. This repeated use is also used in the field of oriental medicine where blood is collected by making a number of holes in a certain skin (a) area. Due to repeated use, the subject's blood (b) is buried in the tip area of the cap unit 200, and these If only the needle member 230 is replaced without washing or changing the cap unit 200 on which the blood (b) is stained, the blood (b) enters the skin (a) of another recipient, which is a serious problem in terms of hygiene and hygiene. may occur.

The blood sampling device according to the present invention can be used repeatedly, and the cap unit 200 is made to be integrally configured so that the cap unit 200 cannot be reused once, and after using the cap unit 200 for one person to be treated, the body unit Since the mounting port 201 is broken by bending the axis of 100 in the horizontal direction, the mounting port 201 cannot be recombined with the body unit 100 and the cap unit 200 must be discarded as a body, so overall pain is reduced. It has the advantage of being safe and hygienic.

100: body unit 110: barrel
111: tip opening 120: tool member
121: ball return spring 130: striking driving part
140: switch 131: solenoid driving part
132: striking member 133: striking member return spring
150: control unit 160: battery unit
112: connecting member 200: cap unit
201: mounting hole 202: penetrating hole
210: cap body 211: locking jaw
220: immersion support 221: painless spring support jaw
222: return spring support jaw 223: needle member mounting part
230: needle member 231: needle
240: painless spring 250, 250a: return spring
a: skin b: blood

Claims (4)

In the blood collection machine,
A body unit including a barrel having a tip opening, a striking member accommodated in the barrel and capable of striking sliding movement and retraction toward the tip opening, and a striking driving unit for applying a striking force to the punching member;
A cap body having a fitting removably coupled to the tip opening region, a penetrating hole provided to face the mounting portion, and a submerged support body slidably accommodated in the cap body by a blow of the perforator member; A needle member having a needle mounted on the tip of the immersion support and exposed through the needle-through hole, coupled to the tip of the immersion support and exposed through the needle-through hole to elastically pressurize the skin of the recipient A cap unit including a painless spring,
and a return spring disposed in the cap body to elastically push the submerged supporter in a direction opposite to the hitting direction with respect to the cap body. The method of claim 1,
The cap body is a blood sampling device, characterized in that it has a locking jaw for preventing the immersion support from being separated in the direction of the fitting. delete The method of claim 1,
The return spring is a blood sampling device, characterized in that the pitch of the second half is larger than the first half along the striking direction.

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