KR20200109410A - Pull-Loading Typed Lancing Device For Using Painless Lancet Only - Google Patents

Abstract

The present invention relates to a lancing device (bloodletting device) which is used with a painless lancet inserted thereinto for collecting a small amount of blood as a blood sample in measuring blood sugar, testing a blood type, etc. A pull-loading type lancing device according to the present invention comprises a sleeve, a loading unit assembly, a projectile assembly and a lancet protection cap. A pull-loading type lancing device dedicated for a painless lancet according to the present invention maximizes a stroke for enabling a painless lancet, presented in Korea patent No. 10-1851212 pre-registered by the present applicant, to be used, at the same time reducing the number of components to shorten assembly time and accordingly to lower production costs, and also enhances convenience to be conveniently used by the user.

Description

Pull-Loading Typed Lancing Device For Using Painless Lancet Only}

The present invention relates to a blood collection device (a blood collection device) in which a blood collection needle is inserted and used to collect a small amount of blood as a blood sample in blood glucose measurement and blood type test. Specifically, when using the blood collection device, there is no overall angle change and shaking, reducing pain. It relates to a pull-loaded blood collection device for exclusive use of painless blood collection needles that have a simple structure due to the small number of components.

There are various conventional techniques for blood collection devices, but they have been developed in two ways, one is a method in which the blood collection needle pierces the skin and then comes out of the skin by pressing the charging means once, and the other is to minimize the overall angle fluctuation and shaking of the blood collection device. In order to do this, it is a method to reduce pain by firing the trigger against the needle site after loading it first before the needle acupuncture. In addition, most known blood collection machines have a structure in which the loading member is pushed upward to load the blood collection needle and then triggered by pressing a push button (pull loading type).

In general, a conventional pull-loaded blood collection device requires a longer reciprocating stroke than a conventional blood collection device (due to the bump spring) because the reciprocating stroke to return to the original position after the needle pierces the skin by firing a blood collection needle. There was a problem in that the painless blood collection needle, which is a pre-registered patent 10-1851212, cannot be used.

In order to solve this problem, in Patent No. 10-1851211, which is a prior patent of the present applicant, the loading part and the launching part are dualized to lengthen the stroke, and the configuration includes a lower case, an upper case, a pull member and a needle that pulls for loading. It includes a protective cap to protect the body, and includes a loading body, a rod, and three springs, namely, a launch spring, a blood collection needle extraction spring, and a return spring, and the pull member is pulled upward with one hand to be loaded. It is a structure to trigger by pressing the pressure plate after doing it.

However, the blood collection device of the registered patent was not satisfactory in terms of economical efficiency because the number of components was rather large and the manufacturing process was complicated, and the production cost was high.

Therefore, by minimizing the overall angle fluctuation and shaking of the blood collection device, pain is reduced, and at the same time, the stroke is lengthened so that the applicant's painless blood collection needle can be used, and the assembly time is shortened by reducing the number of components, thereby lowering the production cost and reducing the pain of the applicant. There is a need for a pull-loading type blood collection device dedicated to painless collection needles that can only be used with blood collection needles.

Korean Patent Registration No. 10-1851211 Korean Patent Registration No. 10-1851212

As a result of researching to solve this problem of the prior art, the inventor of the present invention has come to complete the present invention by forming a structure in which the loading unit and the launch unit are divided in order to lengthen the pull-loading type and the stroke. Therefore, the object of the present invention is to minimize the angle change and shake of the blood collection device, lengthen the stroke, and shorten the assembly time by reducing the number of components, thereby lowering the production cost and providing a pull-loaded blood collection device that can be used only for the applicant's painless blood collection needle. I have to.

The object of the present invention is achieved by the configuration of the following embodiments as the gist of the present invention.

The gist of the present invention is that a sleeve extension portion is formed at one end of which a blood collection needle protection cap is inserted, and a button hole for inserting a trigger button is formed on the circumferential surface, and the inner body, the launch spring barrel and the launch body are A cylindrical sleeve to receive;

A cylindrical inner body having a bulkhead formed with a rectangular hole so that a ball is penetrated through a pull cap is inserted on one side and a launch spring barrel is inserted on the other side, and the first cylindrical part is partially inserted into the inner body and accommodated in the sleeve. It is composed of a second cylindrical part with an outer diameter larger than that of the first cylindrical part so that the trigger reciprocates, and is accommodated in the inner body, and the pull cap return spring is inserted in the lower part and the upper part is composed of a second cylindrical part with an outer diameter larger than the first cylindrical part. A hook keeper with a rectangular hole formed so that the hook is inserted and fastened, a pull cap wrapped around the upper outer circumferential surface of the inner body, and inserted through the launch spring barrel, the bulkhead and the hook keeper, and one end of the inner body The hook is formed so as to be attached to the hook keeper, the other end is a loading assembly including a ball having a trigger;

In the sleeve, one side is connected to the firing spring cylinder in series, and has a rectangular trigger hole for reciprocating the trigger and a firing body slit with one side open, and a trigger latch is formed between the firing body slit and the trigger hole, and a rod A launch body for embedding, a rod in which one side is in contact with the trigger side end of the ball and the other side has a binding groove for binding the blood collection needle holder, and a blood collection needle extending inward so that one end is inserted into the binding groove of the rod A projectile assembly consisting of a cylindrical blood collection needle holder having a holder hole;

A blood collection needle protection cap that is inserted into the sleeve extension of the sleeve to protect the painless blood collection needle and has a blood collection needle entrance through which the bump spring and the needle enter and exit; And

It is to provide a pull-load type blood collection device for exclusive use of a painless blood collection needle, including: a trigger button inserted and fixed by a button fixing member while connected to the trigger through the button hole of the sleeve.

Another aspect of the present invention is that the pull cap return spring surrounds the outer circumferential surface of the hook keeper and is inserted between the hook keeper jaw and the bulkhead, the launch spring wraps the ball and is inserted across the trigger portion of the ball, and the rod return spring It is to provide a pull-loading type blood collection device, characterized in that it surrounds the rod and is inserted between the inner wall and the projection of the projectile body.

Another gist of the present invention is that the connecting portion of the inner body and the pull cap is fastened by the pull cap locking jaw and the inner body locking groove, and the connecting portion of the inner side of the sleeve and the second cylindrical portion of the launch spring is engaged with the sleeve. It is to provide a pull-loading type blood collection device, characterized in that fastened by the groove and the launch spring barrel locking jaw.

Another aspect of the present invention is to provide a pull-load type blood collection device, characterized in that the blood collection needle holder has one or two holder slits along the length direction.

The pull-loaded blood collection device for exclusive use of the painless blood collection needle according to the present invention enables the use of the painless blood collection needle, which is the applicant's pre-registered patent No. 10-1851212, by increasing the stroke as much as possible, while reducing the number of components and reducing the assembly time. In addition to lowering the user's convenience, there is an advantage of improving the convenience that can be used conveniently.

1 is a perspective view of a pull-load type blood collection device according to the present invention.
2 is an exploded view of the components of the blood collection device according to the present invention.
3 is a longitudinal cross-sectional view cut in the longitudinal direction of the blood collection device according to the present invention.
4 is a perspective view of a charging unit assembly that is a main part of a blood collection device according to the present invention.
5 is an exploded perspective view of the charging unit assembly of FIG. 4.
6 is a longitudinal sectional view of the charging unit assembly of FIG. 4.
7 is a perspective view of a projectile assembly.
8 is an exploded perspective view of the projectile assembly.
9 is a view sequentially showing the loading and firing operation of the ball, firing spring, rod return spring, trigger and rod of the blood collection device according to the present invention, (a) is a free field state of the firing spring before firing, (b) Is the loading state, (c) the triggered state, and (d) the firing state, respectively.
FIG. 10 is a diagram sequentially showing the process from before loading to after firing in the loading part assembly, (a) is the free field state of the firing spring before firing, (b) the extension of the hookkeeper wrapped by the pull cap return spring The initial loading state in which the bulkheads of the inner body are in contact with each other, (c) is the fully loaded state, (d) is the return state in which the pulling cap and the inner body remain in their original state after completion of the pull load, and (e) is the firing state.
FIG. 11 is a view sequentially showing the operation from the free field state before launch to the free field state after launch in the blood collection device of the present invention equipped with a painless blood collection needle and fully assembled, (a) is a free field state before launch, (b) is a fully loaded state, (c) is a state in which the pull-loading member has returned to its original position after loading, (d) is a triggered triggered state, and (e) is a state where the blood collection needle pierced the skin after firing.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. However, the detailed description and the contents shown in the drawings do not limit the present invention.

1 shows the appearance of the pull-loaded blood collection device according to the present invention.

The pull-loading blood collection device according to the present invention is largely composed of a sleeve 100, a loading part assembly 200, a projectile assembly 300, and a blood collection needle protective cap 400, as shown in FIGS. 1 to 7 . Among them, the sleeve 100, the pull cap 211, and the blood collection needle protective cap 400 form the exterior.

The sleeve 100 is, as shown in detail in Figure 2, the blood collection needle protection cap 400 is inserted in the sleeve extension portion 101 at one end thereof, the inside of which the loading part assembly 200 and the projectile assembly ( 300). A button hole 103 for inserting the trigger button 102 is formed on the circumferential surface thereof.

The loading part assembly 200, as shown in detail in Figure 5, the inner body 201, the launch spring barrel 203, the hook keeper 210, the pull cap 211, the ball 2213, the launch spring It consists of (207) and pull cap return spring (212).

The inner body 201 is inserted into the sleeve 100, a pull cap 211 is inserted on one side thereof, and a launch spring barrel 203 is inserted on the other side. In the inner center thereof, there is a partition wall 202 in which a rectangular hole 215 is formed so that the hook 206 of the ball 213 passes.

The launch spring cylinder 203 is composed of a first cylindrical portion 204 and a second cylindrical portion 205 connected to the first cylindrical portion 204, and a part of the first cylindrical portion 204 is It is inserted into the inner body 201, and a rectangular hole 215 is formed at the end of the hook 206 to pass therethrough. The second cylindrical portion 205 is accommodated in the sleeve 100 and has an outer diameter larger than the first cylindrical portion 204 so that the trigger 208 reciprocates. A ball 213 and a launch spring 207 are inserted into the launch spring barrel 203.

The hook keeper 210, as shown in Fig. 6, is accommodated in the inner body 201, and a pull cap return spring 212 is inserted in the lower portion thereof, and the hook 206 is inserted and coupled thereto. A jaw 214 and a rectangular hole 215 are formed.

The pulling cap 211 is inserted to surround the upper outer peripheral surface of the inner body 201.

As shown in detail in FIG. 3, a pulling cap locking jaw 217 is formed on an inner circumferential surface of one side of the pulling cap 211 so as to be attached to the inner body locking groove 216 formed on the outer circumferential surface of the inner body 201 have.

The ball 2213 is inserted through the launch spring barrel 203, the partition wall of the inner body 201 and the hook keeper 210, and one end thereof is a hook 206 so as to be attached to the hook keeper 210 Is formed. Its other end has a trigger 208. And the launch spring 207 is wrapped around the ball.

The projectile assembly 300 is composed of a projectile body 301, a rod 305, a blood collection needle holder 306, and a rod return spring 307, as shown in FIG. 7 and the sleeve 100 ).

The launch body 301, as shown in Figure 3, one side is connected in connection with the launch spring cylinder 203, a rod 305 and a rod return spring 507 is a built-in cylindrical shape. In addition, the launch body 301, as shown in Fig. 7, has a rectangular trigger hole 302 for the trigger 208 to reciprocate and a launch body slit 303 with one side open. A trigger engaging jaw 304 is formed inside between the launch body slit 303 and the trigger hole 302. The explosive end of the launch body slit 303 is to facilitate assembly of the trigger engaging portion 209.

The rod 305 is built in the launch body 301. One side of the rod 305 is in contact with an end of the trigger side of the gong 213 to receive the firing force of the gong 213. As shown in detail in FIGS. 3 and 9, one side of the rod 305 is in contact with an end of the trigger side of the ball 213. At one end of the rod 305, a binding groove 310 for binding the cylindrical blood collection needle holder 306 through the launch body hole 311 of the launch body 301 extending inward is formed. In addition, a rod return spring 307 is inserted into the rod 305. And at the end of the rod 305 side, a protrusion 308 is formed on the circumferential surface of the rod return spring 307 to prevent separation, and a binding groove 310 inserted into the blood collection needle holder hole 312 is formed on the opposite side thereof. Has been.

The painless blood collection needle 500 is inserted into the blood collection needle holder 306, and in order to elastically maintain the painless blood collection needle 500, three or less, preferably two, more preferably one holder slit along the longitudinal direction Has 309.

The painless blood collection needle 500 is made of a bump spring 501 and a needle 502 as a prior patent of the present application.

The trigger button 102 is inserted and fixed by the button fixing member 104 while contacting the trigger 208 through the button hole 103 of the sleeve 100.

The blood collection needle protective cap 400, as shown in detail in FIGS. 2 and 3, is inserted at the end of the sleeve 100 to protect the painless blood collection needle 500, and the blood collection needle protective cap 400 has a painless blood collection needle A blood collection needle entrance 401 through which the bump spring 501 and the needle 502 of 500 can enter and exit is formed.

The blood collection device according to the present invention is specialized for using the painless blood collection needle of the applicant's pre-registered patent No. 10-1851212. However, of course, a conventional general blood collection needle can also be used.

2, 3, and 11, the pull cap return spring 212 surrounds the outer circumferential surface of the hook keeper 210 and is inserted between the hook keeper chin 214 and the partition wall 202. The launch spring 207 surrounds the ball 213 and is inserted across the trigger 208 of the ball 213. In addition, the rod return spring 307 surrounds the rod 305 and is inserted between the inner wall of the projectile body 301 and the protrusion 308.

As shown in detail in Figure 3, the connection portion of the inner body 201 and the pull cap 211 is fastened by the pull cap locking jaw 217 and the inner body locking groove 216, and the sleeve 100 The inner side of and the connection portion of the second cylindrical portion 205 of the launch spring barrel 203 is fastened by the sleeve 100 locking groove 105 and the launch spring barrel locking jaw 218.

2, 7, 8, the blood collection needle holder 306 has one or two holder slits 309 along the longitudinal direction.

Hereinafter, the operation of the blood collection device according to the present invention will be described with reference to FIGS. 3, 8, 10 and 11.

3, 9(a), 10(a), and 11(a) show the state of the free field of the launch spring 207 before loading.

When the pulling cap 211 is pulled upward, the pulling force is transmitted to the inner body 201 fastened to the pulling cap 211. At this time, as shown in Fig. 10(b), the pull cap return spring 212 placed on the partition wall 202 of the inner body 201 starts to be compressed. At this time, the ball 213 does not move. When the pulling cap 211 is completely pulled upward, as shown in Figs. 10(c) and 11(b), the lower part of the hook keeper 210 is in contact with the partition wall 202 and goes up to the end. , Gong 213 also moves upward. Here, the pull cap return spring 212 is compressed so that when the pull cap 211 is released, as shown in Figs. 10(d) and 11(c), the compression is released and the free field together with the pull cap 211 It returns to its original position.

Next, the firing and firing process will be described with reference to FIG. 9.

9(a) shows the free state of the launch spring 207 before loading. Here, the trigger button 102 is placed on the trigger 208, and the trigger engaging portion 209 of the trigger 208 is in contact with the inner surface of the sleeve 100. And the ball 213 is in contact with or adjacent to the rod 305.

9(b), 10(c), and 11(b) are fully loaded states when the pulling cap 211 is pulled to the end, and the triggering part 209 of the trigger 208 is It rides over while sliding 304 and is caught by the trigger locking jaw 304. The trigger button 102 rises up like an arrow in FIG. 9(b), the ball 213 is spaced apart from the rod 305, and the firing spring 207 is compressed.

9(c) shows a state immediately after trigger button 102 is triggered. When the trigger button 102 is pressed in the direction of the arrow, compression of the firing spring 207 is released, and at the same time, the trigger engaging portion 209 rides over the trigger engaging jaw 304 and is placed on the inner surface of the sleeve 100. At this time, the trigger button 102 is again placed on the trigger 208, and represents the moment when the ball 213 strikes the rod 305. From this point on, the load return spring 307 starts to be compressed.

9(d) shows a state in which the rod 305 is sufficiently fired. At this time, the rod return spring 307 is compressed by the launch inertia.

10 is a diagram sequentially showing processes from before loading to after firing in the loading unit assembly 200.

Figure 10 (a) shows the state of the free field of the launch spring 207 before launch.

10 (b) is an initial loading state, when the pull cap 211 is pulled, the pull cap return spring 212 is compressed and the lower portion of the hook keeper 210 starts to contact the partition wall 202 of the inner body 201 Represents a state, at this time the ball 213 is not yet moved.

10(c) shows a fully loaded state by pulling the pull cap 211 all the way. At this time, the launch spring 207 is compressed.

10(d) shows that when the pulling cap 211 is released, the pulling cap 211 and the pulling cap return spring 212 are returned to the free field state, and the inner body by pushing the partition wall 202 of the inner body 201 (201) has returned to its original state and the firing spring 207 is in a compressed state.

Fig. 10(e) shows a state in which the ball 213 is launched by the propulsion force of the launch spring 207 and advanced to the end. At this time, the painless collection needle 500 in the blood collection needle holder 306 pierces the skin. After piercing the skin, the painless blood collection needle 500 is further advanced by inertia and then returned again by the restored inertial force to return to the free field state of FIG. 10(a) before the original loading.

11 shows sequentially the operation from the free field state of the firing spring before firing to the free field state after firing in the blood collection device of the present invention equipped with the painless blood collection needle 500.

Fig. 11(a) shows the free field state of all springs before firing. The trigger button 102 enters into the sleeve 100.

11(b) shows that the pull cap 211 is pulled and the pull cap return spring 212 and the firing spring 207 are compressed, and the ball 213 and the rod 305 are spaced apart at regular intervals, and the trigger engaging part (209) represents the loaded state of the trigger engaging jaw (304). At this time, the trigger button 102 is raised by the pushing force of the trigger engaging portion 209.

11(c) shows a state in which compression of the pull cap return spring 212 is released when the pull cap 211 is released after loading, so that only the pull cap 211 and the inner body 201 are returned to their original positions.

Fig. 11(d) shows a state immediately after triggering the trigger 208 by pressing the trigger button 102. At this time, the ball 213 hits the rod 305 and the rod 305 is slightly advanced. Here, the trigger-engaging unit 209 rides over the trigger-engaging jaw 304 and is ready to be loaded again.

11(e) shows a state in which the rod 305 is propelled by the firing force after firing so that the painless blood collection needle 500 pierces the skin. At this time, the rod return spring 307 is compressed by the firing force. After the painless blood collection needle 500 pierces the skin, the rod 305 is returned again by the restoring force of the rod return spring 307 and the blood collection device is returned as shown in FIG. 11(a) in a free field state.

100: sleeve
101: sleeve extension 102: trigger button
103: button hole 104: button fixing member
105: sleeve locking groove
200 : Loading part assembly
201: inner body 202: bulkhead
203: launch spring barrel 204: first cylindrical portion
205: second cylindrical portion 206: hook
207: launch spring 208: trigger
209: trigger engaging portion 210: hook keeper
211: pull cap 212: Pull cap return spring
213: Ball 214: hook keeper chin
215: rectangle hole 216: inner body locking groove
217: pull cap locking jaw 218: launch spring barrel locking jaw
300: projectile assembly
301: projectile body 302: trigger hole
303: launch body slit 304: trigger latch
305: rod 306: blood collection needle holder
307: rod return spring 308: protrusion
309: holder slit 310: binding groove
311: projectile body hole 312: blood collection needle holder hole
400: blood collection needle protective cap
401: blood collection needle entrance
500: painless blood collection needle
501: bump spring 502: needle

Claims (4)

A sleeve extension 101 into which the blood collection needle protective cap 400 is inserted is formed at one end, and a button hole 103 for inserting the trigger button 102 is formed on the circumferential surface, and the inner body ( 201), a cylindrical sleeve 100 for accommodating the launch spring barrel 203 and the launch body 301;
A cylindrical inner body 201 having a partition wall 202 formed with a pulling cap 211 on one side and a launch spring barrel 203 on the other side and a rectangular hole 215 formed therethrough so that the ball 2213 passes through the inner center , A second cylinder having a larger outer diameter than the first cylindrical portion 204 so that the first cylindrical portion 204 and the sleeve 100 are partially inserted into the inner body 201 and the trigger 208 reciprocates The launch spring barrel 203, which consists of a part 205 and is configured to insert the ball 2213 and the launch spring 207, is accommodated in the inner body 201, and a pull cap return spring 212 is inserted in the lower part, The hook keeper 210 having a rectangular hole 215 formed therein so that the hook 206 is inserted and coupled thereto, a pull cap 211 that is inserted and wrapped around the upper outer circumferential surface of the inner body 201, and the launch spring barrel ( 203, the partition wall of the inner body 201 and the hook keeper 210 are inserted through, one end of the hook 206 is formed so as to be coupled to the hook keeper 210, the other end of the trigger 208 Loading unit assembly 200 including a gongyi 213 having a;
In the sleeve 100, one side is connected in series with the launch spring barrel 203, and the trigger 208 has a rectangular trigger hole 302 for reciprocating motion and a launch body slit 303 with one side open. A trigger engaging jaw 304 is formed between the launch body slit 303 and the trigger hole 302, and the launch body 301 for embedding the rod 305, one side is at the trigger side end of the ball 2213. Rod 305 in contact with the other side is formed with a binding groove 310 for binding the blood collection needle holder 306, a blood collection needle holder extending inward so that one end is inserted into the binding groove 310 of the rod 305 A projectile assembly 300 consisting of a cylindrical blood collection needle holder 306 having a hole 312;
A blood collection needle protection cap 400 that is inserted into the sleeve extension 101 of the sleeve 100 to protect the painless blood collection needle 500 and has a blood collection needle entrance 401 for entering and exiting the bump spring 501 and the needle 502 ; And
A trigger button 102 that is inserted and fixed by a button fixing member 104 while connected to the trigger 208 through the button hole 103 of the sleeve 100. The method of claim 1, wherein the pull cap return spring 212 surrounds the outer circumferential surface of the hook keeper 210 and is inserted between the hook keeper chin 214 and the partition wall 202, and the launch spring 207 is a ball (213) ) And is inserted over the trigger 208 of the ball 213, and the rod return spring 307 surrounds the rod 305 and is inserted between the inner wall of the projectile body 301 and the protrusion 308 Pull-load type blood collection device, characterized in that. The method of claim 1, wherein the connection portion between the inner body 201 and the pull cap 211 is fastened by the pull cap locking jaw 217 and the inner body locking groove 216, and the inner side of the sleeve 100 The connection portion of the second cylindrical portion 205 of the launch spring cylinder 203 is a pull-load type blood collection device, characterized in that the connection portion is fastened by the sleeve locking groove 105 and the launch spring cylinder locking jaw 218. The pull-loaded blood collection device according to claim 1, wherein the blood collection needle holder (306) has one or two holder slits (309) along the length direction.

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