CN211270781U

CN211270781U - Non-puncture type blood sampling device

Info

Publication number: CN211270781U
Application number: CN201921938038.8U
Authority: CN
Inventors: 赵容浩; 李雄昊; 文荣珠
Original assignee: Aim Co ltd
Current assignee: HLB Life Science Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-08-18
Anticipated expiration: 2029-11-12

Abstract

The utility model provides a non-puncture type blood sampling device, wherein, include: a blood collection tube including a plurality of capillaries for sucking blood, the total amount of blood sucked into the blood collection tube being the sum of amounts of blood sucked into the plurality of capillaries; and a plunger provided in the blood collection tube, configured to apply air pressure to the plurality of capillaries according to a user's operation and discharge the drawn blood from the capillaries.

Description

Non-puncture type blood sampling device

Technical Field

The utility model relates to a device for gathering blood.

Background

Unlike the way of sampling blood with a syringe for blood test, a non-puncture type device is also used which collects blood flowing out of the outside with a lancet after leaving a small wound on a finger or the like. The non-puncture blood sampling device can not cause great pain to a blood sampling object.

Despite these advantages, the non-piercing blood collection device has a problem that it is difficult to collect a desired amount of blood because blood cannot be collected smoothly. In addition, when a user unfamiliar with the use method performs an erroneous operation, there is a problem in that the blood sampling device cannot perform its function.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can carry out the non-puncture type blood sampling device of blood sampling smoothly according to the volume of taking a blood sample of setting for.

Other objects of the present invention are to provide a non-puncture blood sampling device which can be reused without losing its function even if it is operated by an unfamiliar user.

For solving the object, according to the utility model discloses a non-puncture type blood sampling device of a side, wherein, include: a blood collection tube including a plurality of capillaries for sucking blood, the total amount of blood sucked into the blood collection tube being the sum of amounts of blood sucked into the plurality of capillaries; and a plunger provided in the blood collection tube, configured to apply air pressure to the plurality of capillaries according to a user's operation and discharge the sucked blood from the capillaries, wherein the blood collection tube may further include a common inlet/outlet protruding from the individual inlet/outlet of the plurality of capillaries.

According to the utility model discloses a non-puncture formula blood sampling device of a side, wherein, include: the blood collection tube includes a mounting structure provided with the plunger, the plunger being detachably supported by the mounting structure and formed of a material elastically deformed by a user's operation, and the plunger may include: an upper body to be operated by a user; and a lower body mounted to the mounting structure.

Effect of the utility model

According to the non-puncture blood collection device of the present invention configured as described above, since the portion for sucking blood is formed by the plurality of capillaries and each capillary exerts a sufficient suction force, a set amount of blood to be collected can be easily secured by the total amount of blood sucked by each of the capillaries.

In addition, even if a user unfamiliar with the use of the non-piercing blood collection device erroneously operates the plunger, excessive suction of blood can be prevented by the vent hole positioned on the lower side among the two vent holes formed in the plunger.

Drawings

Fig. 1 is a perspective view of a non-piercing blood collection device 100 according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of the blood collection tube 110 in fig. 1.

Fig. 3 is a conceptual diagram illustrating a relationship between the common doorway 112 and the individual doorway 132 of fig. 2.

Fig. 4 is a perspective view of the plunger 150 of fig. 1.

Fig. 5 is a cross-sectional view of the plunger 150 of fig. 4 taken along line V-V.

Fig. 6 is a sectional view showing a use state of the non-puncture blood collecting device 100 of fig. 1 when blood is aspirated.

Fig. 7 is a sectional view showing a state of use when the non-puncture blood collecting device 100 of fig. 1 discharges blood.

Fig. 8 is a sectional view showing a state of use from the time when blood is suctioned to the time when blood suction is stopped in a state where the non-puncture blood collection device 100 of fig. 1 is erroneously operated.

(description of reference numerals)

100: non-piercing lancing device, 110: blood collection tube, 150: plunger piston

Detailed Description

Hereinafter, a non-puncture type blood collecting device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, a non-piercing lancing device 100 can generally include a blood collection tube 110 and a plunger 150.

The blood collection tube 110 is a portion that sucks blood when a finger or the like of a person is pricked by a lancet and the blood flows out of the finger or the like. The blood collection tube 110 may have a multistage structure in its structure. Specifically, blood collection tube 110 can have a small diameter portion 111, a large diameter portion 113, and a mounting structure 115.

A common inlet and outlet 112 is formed at the free end of the small diameter portion 111. A plurality of capillaries 131 may be formed in the small diameter portion 111. The large diameter portion 113 is connected to the small diameter portion 111, and is formed to have a larger cross-sectional area than the small diameter portion 111. The large diameter portion 113 may have a substantially cylindrical shape. The mounting structure 115 is formed on the free end side of the large diameter portion 113 and is a portion to which the plunger 150 is mounted.

Plunger 150 is detachably mounted on cartridge 110, specifically on mounting structure 115, and constitutes the object of the pressing operation by the user. The plunger 150 has a substantially hemispherical shape and is formed of an elastic material so as to be restored to an original state after a pressing operation. The air pressure is applied to the plurality of capillaries 131 located in the small diameter portion 111 via the large diameter portion 113 by pressing the operating plunger 150.

The blood collection tube 110 will be described in more detail with reference to fig. 2 and 3.

Referring to fig. 2, the plurality of capillaries 131 may be formed to be elongated along the length direction of the small diameter portion 111. The lower end of the capillary 131 may be positioned above the common inlet and outlet 112 of the small diameter portion 111. The lower end of the capillary 131 is a portion into which blood enters and exits, and is also referred to as a separate inlet/outlet 132. The common port 112 protrudes more than the individual ports 132, so that blood is sucked through the common port 112 entirely and then flows into the individual ports 132. Thus, the total amount of blood drawn by the blood collection tube 110 is equal to the sum of the amounts of blood drawn in the plurality of capillaries 131, respectively. The upper end of the capillary 131 is a portion communicating with the hollow portion 114 of the large diameter portion 113, and is also referred to as a communicating end portion 133. The communication end 133 may have a shape slightly protruding from the small diameter portion 111 toward the hollow portion 114.

The large diameter portion 113 has a hollow portion 114, and the width of the hollow portion 114 is larger than the entire width of the small diameter portion 111. With such a hollow portion 114, the blood drawn into the capillary 131 is not introduced into the hollow portion 114 through the communication end portion 133. The hollow portion 114 also serves as a passage through which air pressure generated by the operation of the plunger 150 is transmitted to the capillary 131.

The mounting structure 115 may include a support protrusion 116, a receiving wall 117, and a flange 118. The support protrusion 116 is a portion radially extended from the upper end of the large diameter portion 113, and may have a substantially circular ring shape. The receiving wall 117 is extended in a height direction from the support protrusion 116, and may have a substantially cylindrical shape. The flange 118 is a portion extending radially from the receiving wall 117 and may be a portion for catching the second and third fingers of the user.

Referring to fig. 3, the plurality of capillaries 131 may be formed of three. With respect to a common circle 112 'inscribed in the common port 112, an individual circle 132' circumscribed to the individual ports 132 of the three capillaries 131 may be defined.

The diameter of the common circle 112 'may be smaller than the diameter of the individual circles 132'. Therefore, the area occupied by the common port 112 becomes smaller than the area occupied by the entire individual port 132 of each capillary 131.

Next, the plunger 150 is described with reference to fig. 4 and 5.

Fig. 4 is a perspective view of the plunger 150 of fig. 1, and fig. 5 is a sectional view of the plunger 150 of fig. 4 taken along line V-V.

Referring to fig. 4, the plunger 150 may be composed of an upper body 151 and a lower body 156.

The upper body 151 is a portion that is mainly located on the upper side of the mounting structure 115 and is a portion that is a target of a pressing operation by a user. In contrast, the lower body 156 is mounted in the mounting structure 115, being supported by the mounting structure 115 when the upper body 151 is pressed.

The upper body 151 is substantially in the shape of an inverted hemisphere, and may be formed to have a width greater than that of the lower body 156. The upper body 151 may include a contact deformation portion 152 and a shape maintaining portion 154. The contact deformation portion 152 is a portion having a substantially disk shape and pressed by a finger of a user. A first vent hole 153 is formed in the center of the contact deformation portion 152. The shape maintaining portion 154 is a cylindrical portion extending in a cylindrical shape downward from the contact deforming portion 152, and descends toward the accommodating wall 117 while maintaining its shape when the contact deforming portion 152 is pressed. For this reason, the shape retaining portion 154 may be formed to be gradually thicker from the contact deforming portion 152 toward the lower body 156. A point between the contact deformation portion 152 and the shape retaining portion 154 may be a deformation supporting point 152'. When the contact deforming part 152 is pressed, the contact deforming part 152 is deformed about the deformation supporting point 152', and the shape maintaining part 154 maintains its shape. When the shape retaining portion 154 descends toward the accommodating wall 117, the bottom surface of the shape retaining portion 154 may be in close contact with the accommodating wall 117. In this case, a sealing surface 155 may be formed on the bottom surface of the shape retaining portion 154 so as to be opposed to the upper surface of the accommodating wall 117 in parallel.

The lower body 156 may be supported by the support protrusion 116 in a substantially cylindrical state within a space defined by the receiving wall 117. The lower body 156 may have a second vent 157 and a communication passage 158. The second vent hole 157 may be formed substantially at a lower end side of the lower body 156. The second vent hole 157 is a structure that communicates the internal space of the lower body 156 with the external space of the lower body 156. The communication passage 158 may be a groove communicated with the second vent 157 and concavely formed at the outer surface of the lower body 156. Communication channel 158 is a medium channel that communicates second vent 157 with the outside of blood collection tube 110. The communication passage 158 may specifically include a height passage 158a and a circumferential passage 158 b. If the height passage 158a extends in the height direction of the lower body 156, the circumferential passage 158b extends in the circumferential direction of the lower body 156. The two are connected with each other. In addition, circumferential channel 158b can be located higher than housing wall 117 without pressing operating plunger 150 for blood collection tube 110.

The operation of the above-described non-puncture blood collection device 100 in normal use will be described with reference to fig. 6 and 7.

Fig. 6 is a sectional view showing a state of use when the non-puncture blood collecting device 100 of fig. 1 sucks blood.

Referring to fig. 6 (and fig. 1 to 5), when blood is drawn, the user brings blood collection tube 110 close to the blood without operating plunger 150. Specifically, the non-puncture blood collection device 100 is disposed in an inclined manner in a state where the common inlet/outlet 112 of the blood collection tube 110 is brought into contact with blood.

Then, the blood is drawn into the common port 112 by capillary force. Since each capillary 131 also exerts a capillary force, these blood flows into the three capillaries 131, respectively. Thereby, each capillary 131 smoothly (at high speed) sucks in blood. When the sucked blood reaches the communication end 133 of each capillary 131, the suction of the blood is stopped. The sum of the blood drawn by the three capillaries 131 becomes the suction demand of the non-puncture blood collection device 100.

In the process of sucking blood through such capillary tube 131, air in the hollow portion 114 can be discharged to the outside through the first vent hole 153 and the second vent hole 157 by being pushed by the sucked blood. Specifically, air passing through the second vent 157 may pass through the communication passage 158 and be eventually discharged to a gap between the mounting structure 115 and the upper body 151.

Referring to fig. 7 (and fig. 1 to 5), when blood collected by the non-puncture blood collection device 100 is discharged to a container containing a diluent, a user presses and operates the plunger 150.

Specifically, the user presses the contact deformation portion 152 while blocking the first vent hole 153 with the thumb. Thereby, the contact deformation portion 152 is deformed such that the center portion is lowered toward the blood collection tube 110 than the peripheral portion. The shape retaining portion 154 descends toward the accommodating wall 117 while retaining its shape. The sealing surface 155 of the shape retaining portion 154 is in close contact with the upper surface of the accommodating wall 117, and thus, air in the hollow portion 114 is not discharged to the outside through the second vent hole 157. Since the shape holding portion 154 descends in a state of holding the shape, the seal surface 155 entirely contacts the accommodation wall 117 in the circumferential direction thereof. As a result, the air in the hollow portion 114 is not discharged to the outside through a part of the contact area of the sealing surface 155 and the accommodating wall 117.

The air pressure in the hollow portion 114 formed by the deformation of the plunger 150 acts on the three capillaries 131. The air pressure causes the blood stored in the three capillaries 131 to be discharged to the outside. The blood of each capillary 131 is collected and discharged through the common inlet/outlet 112. Therefore, unlike the case where the common port 112 is not provided and the individual port 132 of each capillary 131 is directly exposed to the outside, the problem that only the blood of one capillary 131 can be discharged and the blood of the other capillaries 131 cannot be discharged is structurally prevented.

The operation of the above-described non-puncture blood collection device 100 in the event of an erroneous operation will be described with reference to fig. 8.

Fig. 8 is a sectional view showing a state of use from the time when blood is suctioned to the time when the blood suction is stopped in a state where the non-puncture blood collection device 100 of fig. 1 is erroneously operated.

According to fig. 8 (and fig. 1-5), a user unfamiliar with the non-piercing lancing device 100 can depress and operate the plunger 150 while drawing blood. This is the opposite of the blood aspiration method described above with reference to fig. 6, and may occur, for example, when the non-puncture blood collection device 100 is operated by the operation method of the dropper.

When the user presses and releases the plunger 150, blood is excessively drawn into the capillary tube 131 by the capillary force and the vacuum suction force of the capillary tube 131, and flows into the hollow portion 114.

However, in the case of the non-piercing lancet device 100, this is structurally prevented. This is because the second vent 157 supplies the external air into the hollow 114 before the first vent 153 in the process of recovering after the plunger 150 is pressed.

Specifically, during the process of pressing and restoring the plunger 150, the first vent hole 153 is still blocked by the user's finger, but the second vent hole 157 may be first communicated with the outside air. Specifically, at the moment when sealing surface 155 of shape retaining portion 154 is separated from the upper surface of housing wall 117, the external air flows into cartridge 110 through the gap between sealing surface 155 and housing wall 117. Specifically, the air passing through the gap flows into the hollow portion 114 through the communication passage 158 and the second ventilation hole 157. As described above, the suction of blood is interrupted by the release of the vacuum by the external air flowing in through the second vent 157, and thus, the blood is not excessively sucked beyond the capillary 131.

The user may normally draw blood into the non-puncture blood collecting device 100 in the manner described with reference to fig. 6 after discharging the blood erroneously drawn into the non-puncture blood collecting device 100 in the manner described with reference to fig. 7.

Claims

1. A non-piercing blood collection device comprising:

a blood collection tube including a plurality of capillaries for sucking blood, the total amount of blood sucked into the blood collection tube being the sum of amounts of blood sucked into the plurality of capillaries; and

a plunger provided in the blood collection tube and configured to apply air pressure to the plurality of capillaries according to a user's operation and discharge the drawn blood from the capillaries,

the blood collection tube further includes a common inlet and outlet that protrudes further than the individual inlet and outlet of the plurality of capillaries,

when blood is sucked, the blood sucked through the common inlet/outlet flows into the individual inlet/outlet of each of the plurality of capillaries.

2. The non-piercing lancing device according to claim 1, wherein a common circle inscribed within said common inlet and outlet has a smaller diameter than an individual circle circumscribing each individual inlet and outlet of said plurality of capillaries.

3. A non-piercing blood collection device comprising:

a blood collection tube configured to suck blood; and

a plunger provided in the blood collection tube and configured to apply air pressure to the plurality of blood collection tubes in accordance with a user's operation and discharge the blood sucked in from the blood collection tubes,

the blood collection tube comprises a mounting structure provided with the plunger,

the plunger is detachably supported by the mounting structure and is formed of a material elastically deformable by a user's operation,

the plunger, comprising:

an upper body to be operated by a user; and

and a lower body mounted to the mounting structure.

4. The non-piercing lancing device according to claim 3, wherein said mounting structure comprises:

a support protrusion for supporting the lower body; and

a receiving wall for surrounding the lower body.

5. The non-piercing lancing device according to claim 4, wherein the upper body includes a first vent hole,

the lower body includes a second vent hole that allows outside air to flow into the blood collection tube before the first vent hole in a process of returning after the plunger is pressed.

6. The non-piercing blood collection device according to claim 5, wherein the second vent hole is formed at a lower end side of the lower body, and the lower body further comprises a communication channel recessed in an outer surface of the lower body to communicate with the second vent hole and communicating the second vent hole with an outside of the blood collection tube.

7. The non-piercing lancing device according to claim 6, wherein said communication channel comprises:

a height channel formed by extending towards the height direction of the lower main body; and

and a circumferential channel formed to extend in a circumferential direction of the lower body.

8. The non-piercing lancing device according to claim 7, wherein said circumferential channel is located higher than said receiving wall in a state in which said plunger is not operated.

9. The non-piercing lancing device according to claim 5, wherein said upper body is formed to have a wider width than said lower body and is pressed against said receiving wall.

10. The non-piercing lancing device according to claim 9, wherein said upper body comprises:

a contact deformation portion formed with a first vent hole pressed by a finger of a user; and

a shape maintaining portion formed downward in a cylindrical shape at the contact deforming portion, and descending toward the accommodating wall in a state of maintaining the shape when the contact deforming portion is pressed.