JP2019208748A - Blood collection aid - Google Patents

Abstract

To provide a blood collection aid which reduces positional deviation at the time of attachment and which can accurately guide a collection tool to a location of puncture.SOLUTION: A blood collection aid comprises: a first base part which has a first contact surface to be brought into contact with a first finger cushion; a second base part which has a second contact surface to be brought into contact with a second finger adjacent to the first finger; a connection part that connects the first and second base parts, and between the first and second fingers, comprises a first between-fingers contact surface to contact a side surface of the first finger and a second between-fingers contact surface to contact a side surface of the second finger; and a through hole formed in the first base part and penetrating from a part of the first contact surface of the first base part to an opposite surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a blood collection aid.

  Diabetes and other patients measure blood glucose levels as part of their routine management of blood sugar levels. In the measurement of glucose concentration, for example, a patient punctures a fingertip with a puncture needle to leak blood out of the body, and a blood sampling device such as a biosensor is brought into contact with the leaked blood to collect blood to be measured.

  Some patients with diabetes, etc. are handicapped, have poor vision or are blind. For such a patient, it is a burden to puncture the fingertip or to bring the collection tool into contact with blood leaked by the puncture. In order to reduce such a burden, an auxiliary tool for aligning the puncture needle and the sampling tool has been proposed. For example, an auxiliary device that is formed in a ring shape and includes a puncture guide portion that aligns the puncture position on the skin with the puncture needle of the puncture device, and a blood collection guide portion that aligns the collection tool at the puncture site (For example, Patent Document 1).

Japanese Patent No. 4625062

  The assisting device formed in a ring shape has a problem that it easily rotates along the periphery of the finger. For example, if the auxiliary tool rotates along the periphery of the finger after puncturing with the puncture needle, the blood collection guide portion is displaced from the punctured location. Therefore, the blood collection guide unit cannot align the collection tool to the punctured location, that is, cannot guide the collection tool to the punctured location.

  An object of one aspect of the disclosed technology is to provide a blood collection assisting tool that can be accurately guided to a place where the collection tool has been punctured, with a positional shift at the time of wearing being suppressed.

  One aspect of the disclosed technique is exemplified by the following blood collection aid. The blood collection assisting tool has a first base portion having a first contact surface to be brought into contact with the belly of the first finger, and a second contact surface to be brought into contact with a second finger adjacent to the first finger. The second base, the first base, and the second base are connected to each other, and the first finger and the second finger are in contact with the side surface of the first finger at the inter-finger portion between the first finger and the second finger. A connecting portion having a first inter-finger contact surface and a second inter-finger contact surface that contacts the side surface of the second finger; and a part of the first contact surface of the first base portion formed on the first base portion. And a through hole penetrating toward the opposite surface.

  The blood collection assisting tool is prevented from being displaced at the time of wearing, and can be accurately guided to the place where the collection tool is punctured.

FIG. 1 is a diagram illustrating an example of a blood collection aid according to the first embodiment. FIG. 2 is an example of a cross-sectional view along the AA line indicated by the alternate long and short dash line in FIG. FIG. 3 is a diagram illustrating an example of how the blood collection aid is used. FIG. 4 is a diagram illustrating an example of the puncture device. FIG. 5 is a perspective view showing an example of a biosensor. FIG. 6 is a perspective view showing an example of a measuring apparatus. FIG. 7 is a diagram showing an example of a usage mode in which puncturing with a puncture device is assisted by a blood collection assisting device. FIG. 8 is an example of a usage mode for assisting the introduction of blood into the biosensor with a blood collection aid. FIG. 9 is a diagram illustrating an example of a blood glucose level measurement method using a blood collection aid. FIG. 10 is a front view showing an example of a blood collection aid according to the first modification. FIG. 11 is a front view showing an example of a blood collection aid according to the second modification. FIG. 12 is an example of a top view showing an example of a blood collection aid according to the third modification. FIG. 13 is a diagram showing an example of a blood collection aid according to the fourth modification. FIG. 14 is a cross-sectional view showing an example of a blood collection aid according to the fifth modification.

  Hereinafter, a blood collection aid according to an embodiment will be described with reference to the drawings. The configuration of the embodiment described below is an exemplification, and the disclosed technology is not limited to the configuration of the embodiment.

<Embodiment>
FIG. 1 is a diagram illustrating an example of a blood collection aid according to the embodiment. FIG. 1 (A) is an example of a front view of a blood collection aid, and FIG. 1 (B) is an example of a top view of the blood collection aid. FIG. 2 is an example of a cross-sectional view of the blood collection aid along line AA indicated by the alternate long and short dash line in FIG. FIG. 3 is a diagram showing an example of how the blood collection aid is used, and is an example of a top view in a state where the blood collection aid is placed on two fingers adjacent to each other.

  The blood collection assisting tool 10 is used by covering two fingers (first finger and second finger) adjacent to each other, preferably covering two adjacent fingers of the palm facing upward. (See FIG. 3). The blood collection aid 10 (base 11) has a width direction (X direction), a depth direction (Y direction), and a height direction (Z direction). In the Z direction described above, the direction from the cylindrical portion 15 toward the first base portion 111 is defined as the downward direction, and the direction from the first base portion 111 toward the cylindrical portion 15 is defined as the upward direction. In the X direction described above, a direction from the first base 111 or the second base 112 toward the connecting portion 14 is an inward direction, and a direction from the connecting portion 14 toward the first base 111 or the second base 112 is an outer direction. The blood collection assisting tool 10 is normally used in a state in which the cylindrical portion 15 is directed upward and the first contact surface 12 and the second contact surface 13 are directed downward.

The blood collection assisting tool 10 has a base portion 11 in which a first base portion 111 and a second base portion 112 having a substantially arcuate (arch) shape when viewed from the front are connected. In other words, the base 11 has two first semi-circular arch-shaped members, the first base 111 and the second base 112 arranged in a straight line with their respective arcs facing upward, and adjacent to each other. The end portion is connected by the connecting portion 14. The lower surface of each of the first base portion 111 and the second base portion 112 is in contact with two adjacent fingers (for example, the index finger and the middle finger, the middle finger and the ring finger), the first contact surface 12, the second contact Used as surface 13. The first contact surface 12 contacts the belly of the finger that is to be punctured. The first contact surface 12 and the second contact surface 13 are in contact with the belly of the finger in an area suitable for the stability of the blood collection aid. It is preferable that the 1st contact surface 12 and the 2nd contact surface are formed in the curved surface (arc) along the finger | toe of a finger | toe. The radius of curvature of the arcs of the first base portion 111 and the second base portion 112 is determined in consideration of the thickness of the user's finger. That is, the first contact surface 12 of the first base 111 and the second base 1
The 12 second contact surfaces 13 are each formed as a curved surface determined in consideration of the thickness of the user's finger. In other words, the curved surface determined in consideration of the thickness of the user's finger can be said to be a curved surface along the belly of the user's finger. The connecting portion 14 is interposed in the inter-finger portion that is between the adjacent first finger and second finger. In other words, the connecting portion 14 is interposed inside the first finger and the second finger. The connecting portion 14 interposed at such a position is sandwiched from both sides in the X direction by the adjacent first finger and second finger. In other words, it can be said that the connecting portion 14 is sandwiched between the first finger and the second finger when the blood collection aid 10 is used.

  The first contact surface 12, the second contact surface 13, and the connecting portion 14 are preferably formed of a flexible material having a high frictional force. Examples of such a material include an elastic resin (for example, rubber). An elastic member can be mentioned. By adopting such a configuration, the frictional force between blood collection assisting tool 10 and the first and second fingers is improved. In particular, in the inter-finger portion between the first finger and the second finger of the connecting portion 14, the first inter-finger contact surface 122 that contacts the side surface of the first finger and the side surface of the second finger By forming the second finger contact surface 132 in contact with a flexible material having a high frictional force, positional deviation between the first finger and the second finger when the blood collection aid 10 is worn is suppressed, Furthermore, it becomes easy to fix the blood collection assisting tool 10 by the force for pinching the first finger and the second finger.

  The through hole 113 is a hole that penetrates the first base 111 in the vertical direction. In other words, the through hole 113 is a hole penetrating from a part of the first contact surface 12 of the first base 111 toward the surface opposite to the first contact surface 12. The through hole 113 is formed at a position where the puncture position of the first finger can be visually recognized at the time of contact between the first contact surface 12 and the first finger. Here, being able to visually recognize the puncture position does not mean that the puncture position can always be visually confirmed at the time of contact between the first contact surface 12 and the first finger, and in a state where the through hole 113 is not blocked. It is sufficient if it is visible. Furthermore, it can be said that the puncture position is visible within the area defined by the through hole 113 in the first finger. The inner diameter of the through-hole 113 is determined as appropriate so that a puncture device having a puncture needle or a sampling device can pass through. The inner diameter of the through-hole 113 through which the puncture tool and the sampling tool can pass is, for example, 5 to 50 mm, preferably 10 to 30 mm, and more preferably 15 to 20 mm.

  As described above, the connecting portion 14 is sandwiched between the first finger and the second finger. Therefore, since blood collection assisting tool 10 is held by the first finger and the second finger, positional deviation of blood collection assisting tool 10 in the X direction and the Y direction is suppressed.

  As described above, the first base 111 comes into contact with the first finger at the first contact surface 12, and the second base 112 comes into contact with the second finger at the second contact surface 13. In other words, the blood collection aid 10 is supported by the first finger on the first base 111 and supported by the second finger on the second base 112. That is, it can be said that the blood collection aid 10 is supported by two axes. The blood collection assisting tool 10 is supported by two fingers, so that the blood collection assisting tool 10 is prevented from rotating about the longitudinal direction of the fingers.

  As described above, the blood collection assisting tool 10 is restrained from being displaced in the X direction and the Y direction, and is prevented from rotating about the longitudinal direction of the finger. Therefore, it is suppressed that the through-hole 113 of the blood collection auxiliary tool 10 is displaced even after puncturing. Since the position of the through hole 113 does not shift, the blood leaked out of the body by puncture exists at a position where it can be visually recognized through the through hole 113 even after puncture. Therefore, the collection tool can easily collect blood through the through hole 113.

The blood collection aid 10 may further include the following elements. For example, the cylindrical portion 15 may be provided on the upper surface of the first base portion 111 so as to surround the periphery of the through hole 113. The cylindrical portion 15 is a cylindrical wall portion having an open upper end and a lower end, and can also be referred to as a wall portion that protrudes upward from the periphery of the through hole 113.

  When the blood collection assisting tool 10 has the cylindrical portion 15, even a user whose visual acuity has decreased or lost his / her eyesight can easily grasp the position of the through hole 113 using the cylindrical portion 15 as a clue. In addition, the puncture tool and the sampling tool enter the through hole 113 at a higher angle than when the tube portion 15 is not provided by having the tube portion 15. Since the puncture tool and the collection tool are directed to the through-hole 113 at a high angle, it becomes easy to puncture the puncture site with the puncture needle of the puncture tool and collect the leaked blood with the collection tool.

  The inner diameter of the tube portion 15 may be formed substantially the same as the outer diameter of the puncture device. In such a case, the puncture device inserted into the tube portion 15 can be directly opposed to the first finger. Therefore, puncture to the puncture site becomes easy. Moreover, since the through-hole 113 can puncture the approximate center of the region covering the first finger, it is possible to reduce blood from adhering to the blood collection aid 10, and to collect the leaked blood with the collection tool. It becomes easy to do.

  The tube portion 15 may further include a restricting unit that restricts the depth at which the puncture tool enters the tube portion 15. Examples of the restricting means include a protrusion that protrudes from the inner wall of the cylindrical portion 15 and a taper process that gradually decreases from the upper end to the lower end of the inner wall of the cylindrical portion 15. Details of these protrusions and taper processing will be described later as modified examples.

  The outer edge portion of the first base portion 111 that is an arch-shaped member forms a first outer wall portion 1111 extending downward along a surface opposite to the side surface facing the second finger among the side surfaces of the first finger. May be. Similarly, the outer edge portion of the second base portion 112 may form a second outer wall portion 1121 that extends downward along a surface opposite to the side surface facing the first finger among the side surfaces of the second finger. Good. By having the first outer wall portion 1111 and the second outer wall portion 1121 as described above, the blood collection aid 10 is less likely to be displaced in the X direction.

  The lower end portion of the first outer wall portion 1111 and the lower end portion of the second outer wall portion 1121 may be formed with substantially the same height (position in the Z direction). The lower end of the first outer wall portion 1111 and the lower end of the second outer wall portion 1121 are formed to have substantially the same height, thereby improving the weight balance in the width direction around the connecting portion 14 of the blood collection aid 10. To do. Therefore, the stability of the blood collection assisting tool 10 in the state of being placed on the finger is improved. That is, it can be said that the position shift of the blood collection assisting tool 10 placed on the finger is further suppressed.

  The first outer wall portion 1111 may be formed such that the inner side surface 121 of the first outer wall portion 1111 contacts the surface on the opposite side of the side surface facing the second finger among the side surfaces of the first finger. Further, even if the second outer wall portion 1121 is formed so that the inner side surface 131 of the second outer wall portion 1121 is in contact with the surface of the second finger opposite to the side surface facing the first finger. Good. In other words, the inner side surface 121 contacts the side surface of the first finger that is opposite to the side surface facing the first inter-finger contact surface 122 of the connecting portion 14, and the inner side surface 131 is the second finger surface. It can be said that the side surface of the connecting portion 14 that is opposite to the side surface facing the second inter-finger contact surface 132 is in contact with the side surface opposite to the side surface. For this reason, the blood collection assisting tool 10 is less likely to be displaced.

  The blood collection assisting tool 10 is not limited to the above-described configuration and can be variously modified. The deformation of the blood collection assisting tool 10 will be described later as a modified example.

<Example>
The embodiment of the blood collection aid 10 will be further described. In the following examples, blood is leaked by puncturing a fingertip with a puncture needle of a puncture tool, and the leaked blood is collected by a biosensor that is an example of a collection tool, and the glucose concentration in the blood collected by a measuring device is Measured.

  The blood collection assisting tool 10 has a configuration as described above with reference to FIGS. 1 to 3. In the present embodiment, the blood collection assisting tool 10 is used by covering the fingertip side with respect to the first joint of the middle finger and the ring finger with the palm of the left hand facing upward. That is, the blood collection assisting tool 10 is used by covering the belly of the middle finger and the ring finger. When the blood collection aid 10 is used in this manner, the belly of the finger closer to the fingertip side than the first joint of the middle finger can be visually recognized through the through-hole 113, and the connecting portion 14 is interposed between the middle finger and the ring finger. To do.

<Puncture tool>
FIG. 4 is a diagram illustrating an example of the puncture device. FIG. 4A is a side view of the puncture device 20, and FIG. 4B is a top view of the puncture device 20. 4 (C) and 4 (D) are cross-sectional views of puncture device 20 taken along the line BB indicated by the alternate long and short dash line in FIG. 4 (B). 4C is a cross-sectional view of the puncture device 20 before the puncture needle 25 is ejected, and FIG. 4D is a cross-sectional view of the puncture device 20 in a state where the puncture needle 25 is ejected.

  The puncture device 20 has a width direction (X direction), a depth direction (Y direction), and a height direction (Z direction). The puncture device 20 has a main body portion 21 formed in a substantially cylindrical shape with the Z direction as a longitudinal direction as a whole. The lower end surface 213 of the main body 21 is provided with an injection cylinder 22 that protrudes downward from the main body 21, has an outer diameter smaller than that of the main body 21, and has an opening 221 below. A puncture button 23 is provided on the side surface of the main body portion 21 formed in a substantially cylindrical shape. The upper end portion of the main body portion 21 is blocked by a flat ceiling portion 211.

  4C, one end is connected to the upper end surface 212 that is the inner wall surface of the ceiling portion 211, and the other end is connected to the base 252 of the puncture needle 25. The coil spring 24 is accommodated along the longitudinal direction of the main body 21. Before the injection of the puncture needle, the lower end of the base 252 is regulated from below by the regulating member 231, so that the coil spring 24 is maintained in a compressed state. The restriction member 231 is connected to the puncture button 23. When the puncture button 23 is pressed, the regulating member 231 is detached from the base 252. The puncture needle 25 is housed in the main body 21 with the base 252 connected to the coil spring 24 as described above, with the tip 251 facing the opening 221 of the injection cylinder 22.

  When the puncture button 23 is pressed and the regulating member 231 is removed from the base 252, the puncture needle 25 is ejected by the elastic force of the coil spring 24 as illustrated in FIG. Projects from 221. By puncturing the skin with the protruding tip 251, the puncture device 20 can leak blood from the skin.

<Biosensor>
FIG. 5 is a perspective view showing an example of a biosensor. The biosensor 40 has a width direction (X direction), a height direction (Z direction), and a depth direction (Y direction). The biosensor 40 is formed by laminating a substrate 41, a spacer 42, and a cover 43 in this order in the height direction (Z direction) and bonding them. On the upper surface of the substrate 41, an electrode pair 44 that is used to measure a substance to be measured and includes a working electrode 44a and a counter electrode 44b is formed.

The flow path 46 is formed by the substrate 41, the spacer 42, and the cover 43 by cutting out a part of the spacer 42, and a sampling port 45 is provided at one end thereof. The cover 43 is provided with an exhaust port 47 for exhausting the gas inside the flow path 46 to the outside. The blood that has come into contact with the collection port 45 is introduced into the vicinity of the electrode pair 44 by moving through the flow channel 46 toward the exhaust port 47 using capillary action. The electrode pair 44 is in liquid junction with the blood introduced in the vicinity of the electrode pair 44. When a DC voltage is applied to the electrode pair 44 that is in liquid junction, a current flows between the working electrode 44a and the counter electrode 44b. The measuring device 30 (described later) applies a DC voltage to the electrode pair 44 in a liquid junction state, and measures a measurement target component in blood based on the response current from the electrode pair 44.

<Measurement device 30>
FIG. 6 is a perspective view showing an example of a measuring apparatus. The measuring device 30 measures a measurement target component in blood by an electrochemical method using the biosensor 40. The measuring device 30 includes a housing 31, a display panel 32, and a sensor insertion port 33.

  As illustrated in FIG. 6, the housing 31 of the measurement apparatus 30 is provided with a display panel 32 that displays measurement results and the like. The biosensor 40 is inserted into the sensor insertion port 33. The measuring device 30 applies a voltage to the biosensor 40 and measures a signal value (for example, a current value). When a voltage is applied to the electrode pair of the biosensor 40, the biosensor 40 outputs a response current value corresponding to the measurement target component in blood.

<Usage Mode of Blood Collection Aid 10>
7 and 8 are diagrams illustrating an example of how the blood collection aid is used. 7 and 8 show an example of the state of the cylindrical portion 15 and the vicinity thereof in the blood collection assisting tool 10. Hereinafter, with reference to FIG. 7 and FIG. 8, an example of the usage mode of the blood collection aid 10 will be described.

  FIG. 7 is a diagram illustrating an example of a usage mode in which the blood collection assisting device 10 assists the puncture with the puncture device 20. FIG. 7 is a cross-sectional view of blood collection assisting tool 10 taken along the line AA indicated by the alternate long and short dash line in FIG. 1B, and shows a configuration in the vicinity of tube portion 15 of blood collection assisting tool 10. When puncturing is performed by the puncture device 20, the injection tube of the puncture device 20 is inserted into the blood collection assisting device 10. 7A, the blood collection assisting device 10 is placed so that the first contact surface 12 is in contact with the middle finger F1 in a state where the injection tube 22 of the puncture device 20 is inserted into the tube portion 15. . When the injection tube 22 is inserted into the tube portion 15, as illustrated in FIG. 7A, the lower end surface 213 of the puncture device 20 and the upper end surface of the tube portion 15 come into contact, and the tube portion 15 of the puncture device 20. Further entry into is restricted.

  FIG. 7B is a diagram illustrating an example of a state in which the puncture needle 25 is ejected from the ejection cylinder 22. The ejected puncture needle 25 punctures the puncture location P1 of the middle finger F1, and blood leaks from the puncture location P1 punctured. The puncture location P1 can be said to be a location approximately in the center of the region where the through hole 113 covers the first finger. After puncturing, the injection tube 22 of the puncture device 20 is removed from the tube portion 15.

  FIG. 8 is an example of a usage mode for assisting the introduction of blood into the biosensor with a blood collection aid. FIG. 8 is a cross-sectional view of the blood collection assisting tool 10 taken along the line AA indicated by the alternate long and short dash line in FIG. 1B, and shows the configuration in the vicinity of the tube portion 15 in the blood collection assisting tool 10. FIG. 8A shows an example of a state in which the biosensor 40 has started to be inserted into the cylindrical portion 15. The biosensor 40 is inserted into the tube portion 15 with the collection port 45 facing the blood B1 leaked by the puncture of the puncture device 20. For example, the biosensor 40 is inserted into the cylindrical portion 15 in a state where the biosensor 40 is in contact with the edge 1521 of the inner wall 152 of the cylindrical portion 15. In other words, it can be said that the biosensor 40 is inserted into the cylindrical portion 15 along the edge 1521. By being inserted in such a state, the biosensor 40 is inserted into the cylindrical portion 15 while being supported by the edge 1521. Since it is supported by the edge 1521, even a user with reduced visual acuity can easily move the sampling port 45 of the biosensor 40 toward the blood B1.

FIG. 8B shows an example of a state in which the sampling port 45 of the biosensor 40 is in contact with blood. When the collection port 45 comes into contact with the blood B1, the blood B1 is introduced into the flow path 46 by capillary action as described above. When blood B1 is introduced into the flow path of biosensor 40, measurement device 30 measures a measurement target component in blood B1.

<Measurement method of blood glucose level using blood collection aid 10>
FIG. 9 is a diagram illustrating an example of a blood glucose level measurement method using a blood collection aid. Hereinafter, an example of a blood glucose level measurement method using the blood collection assisting tool 10 will be described with reference to FIG.

  In step S <b> 1, the blood collection aid 10 is attached to the puncture device 20. The mounting is performed by inserting the injection tube 22 of the puncture device 20 into the tube portion 15 of the blood collection assisting device 10.

  In step S2, blood collection assisting tool 10 attached to puncture instrument 20 is placed on the finger. In this embodiment, the blood collection assisting tool 10 is placed so that the first contact surface 12 contacts the palm side surface of the middle finger and the second contact surface 13 contacts the palm side surface of the ring finger. The positional relationship among the blood collection assisting tool 10, the puncture tool 20, and the middle finger F1 in step S2 is, for example, as illustrated in FIG.

  In step S3, the puncture needle 25 is ejected by depressing the puncture button 23 of the puncture device 20, and the puncture location P1 is punctured. The positional relationship among the blood collection assisting tool 10, the puncture tool 20, the puncture needle 25, and the middle finger F1 in step S3 is, for example, as illustrated in FIG. In step S <b> 4, the puncture device 20 is removed from the blood collection aid 10.

  In step S <b> 5, the biosensor 40 is inserted into the cylinder portion 15. As described above, the biosensor 40 is inserted into the cylindrical portion 15 with the collection port 45 facing the blood B1 and in contact with the edge 1521 of the inner wall 152 of the cylindrical portion 15. When the collection port 45 of the biosensor 40 comes into contact with the blood B1, the blood B1 is introduced into the flow path 46 of the biosensor 40. As described above, the blood B1 introduced into the flow path 46 causes the electrode pair 44 to be in liquid junction. The positional relationship among the blood collection assisting tool 10, the biosensor 40, and the middle finger F1 in step S5 is, for example, as illustrated in FIGS. 8A and 8B.

  In step S <b> 6, when the electrode pair 44 of the biosensor 40 is in liquid junction with the blood B <b> 1, the measuring device 30 applies a DC voltage to the electrode pair 44 and measures the measurement target component based on the response current.

<Modification>
The blood collection aid 10 described above can be variously modified. 10 to 13 are views showing an example of a blood collection assisting tool according to a modification. Hereinafter, with reference to FIGS. 10 to 13, a modified example of the blood collection aid 10 will be described.

<First Modification>
Although the blood collection aid 10 according to the embodiment includes the first outer wall portion 1111 and the second outer wall portion 1121, the blood collection aid is not limited to the configuration including the first outer wall portion 1111 and the second outer wall portion 1121. FIG. 10 is a front view showing an example of a blood collection aid according to the first modification. The blood collection assisting tool 10a illustrated in FIG. 10 is formed in a substantially T shape when viewed from the front, and has neither the first outer wall portion 1111 nor the second outer wall portion 1121. Further, in the blood collection assisting tool 10a formed in a substantially T shape, the first base portion 111a and the second base portion 112a having the longitudinal direction in the X direction are arranged in a straight line along the X direction and face each other. The end portions are connected by a connecting portion 14a having a longitudinal direction in the Z direction. Even with such a blood collection aid 10a, the first base 111a is supported by the middle finger, the second base 112a is supported by the ring finger, and the connecting portion 14a is interposed between the middle finger and the ring finger, so that blood The collection assisting tool 10a is prevented from rotating in the circumferential direction of the finger. For this reason, the blood collection assisting tool 10a is less likely to be displaced. Therefore, the blood collection assisting device 10a according to the first modification can also suitably guide the biosensor 40 to the blood B1 leaked by puncturing with the puncture needle.

  In the embodiment, the radius of curvature of the arc of the first base 111 and the second base 112 is determined in consideration of the thickness of the user's finger, but the first base 111 and the second base 112 are arcs. It is not limited. In the blood collection assisting tool 10a according to the first modification, each of the first base portion 111 and the second base portion 112 is formed flat. That is, each of the first contact surface 12a and the second contact surface 13a is formed flat. Even if the first contact surface 12a and the second contact surface 13a are formed flat, the first base 111a can be supported by the middle finger, and the second base 112a can be supported by the ring finger. Furthermore, by forming the first contact surface 12a and the second contact surface 13a flat, it is possible to make the blood collection assisting device simpler than the blood collection assisting device 10 according to the embodiment, and easy to manufacture. become.

<Second Modification>
In the blood collection assisting tool, the shape of the first base and the second base viewed from the front is not limited to an arc (arch) shape. FIG. 11 is a front view showing an example of a blood collection aid according to the second modification. Each of the blood collection assisting tools 10b has a shape in which a first base portion 111b and a second base portion 112b that are formed in a substantially ring shape in front view are connected side by side. When using the blood collection aid 10b, the middle finger is inserted into the ring formed by the first base 111b, and the ring finger is inserted into the ring formed by the second base 112b. That is, the first base 111b surrounds the middle finger and the second base 112b surrounds the ring finger. Such a blood collection assisting tool 10b also suppresses the rotation of the blood collection assisting tool 10b in the circumferential direction of the finger, so that the biosensor 40 can be suitably guided with respect to the blood B1 leaked by the puncture with the puncture needle. .

<Third Modification>
FIG. 12 is an example of a top view showing an example of a blood collection aid according to the third modification. Since the finger lengths of the hands are different from each other, in the blood collection assisting tool 10c, the positions of the first base portion 111c and the second base portion 112c are changed according to the finger length. As illustrated in FIG. 12, in the blood collection assisting tool 10 c, the first base 111 c that contacts the middle finger that is longer than the ring finger is moved to the fingertip side (forward direction) relative to the second base 112 c that contacts the ring finger. Yes. By having such a configuration, the blood collection aid 10c is suitably supported by two fingers having different lengths.

<Fourth Modification>
In the embodiment, the inner diameters of the inner wall 152 of the cylindrical portion 15 and the inner wall of the through hole 113 are constant from the upper end to the lower end. However, the inner diameter of the inner wall 152 of the cylindrical portion 15 and the inner wall of the through hole 113 may be tapered so as to gradually decrease from the upper end toward the lower end. FIG. 13: is sectional drawing which shows an example of the blood collection assistance tool which concerns on a 4th modification. FIG. 13 is a cross-sectional view of the blood collection aid along the line AA indicated by the alternate long and short dash line in FIG. 1B, and shows the configuration in the vicinity of the cylindrical portion 15d in the blood collection aid 10d. The inner wall 152d of the cylindrical portion 15d of the blood collection assisting tool 10d and the hole inner wall 1131 of the through hole 113d are tapered so that the inner diameter gradually decreases from the upper end of the cylindrical portion 15d toward the lower end of the through hole 113d. .

By moving the biosensor 40 along the tapered inner wall 152d and the hole inner wall 1131, the biosensor 40 can be easily brought into contact with the blood B1. In addition, since the inner diameters of the cylindrical portion 15d and the through-hole 113d are gradually reduced, the puncture device 20 inserted into the cylindrical portion 15d is inserted into the cylindrical portion 15d by an appropriate depth. 152
It is restricted from entering d in the tube part 15d any more in contact with d. Therefore, even when the outer diameter of the puncture device 20 is narrower than the inner diameter at the upper end portion of the cylindrical portion 15d and the entry of the puncture device 20 into the cylindrical portion 15d cannot be regulated by contact between the lower end surface 213 and the upper end surface of the cylindrical portion 15d. The distance between the puncture device 20 and the finger to be punctured can be kept moderate. That is, by such taper processing, the puncture device 20 can be positioned at a position where the puncture needle 25 of the puncture device 20 can puncture a finger to be punctured by an appropriate depth.

<Fifth Modification>
In the fourth modification, the distance between the puncture device 20 and the finger to be punctured is kept moderate by tapering the inner wall 152d of the cylindrical portion 15d. However, the method of keeping the distance between the puncture device 20 and the finger to be punctured moderately is not limited to taper the inner wall 152d. FIG. 14 is a cross-sectional view showing an example of a blood collection aid according to the fifth modification. FIG. 14 is a cross-sectional view of the blood collection aid along line AA indicated by the alternate long and short dash line in FIG.

  The inner wall 152 of the tube portion 15e of the blood collection assisting tool 10e is provided with a protrusion 153 that protrudes in the radial direction of the tube portion 15e. It can also be said that the protrusion 153 protrudes toward the central axis of the cylindrical portion 15e. The position of the projection 153 in the Z direction is determined so that the distance between the puncture device 20 and the finger to be punctured is kept moderate.

  When the puncture device 20 inserted into the tube portion 15e is inserted into the tube portion 15e by an appropriate depth, the puncture tool 20 is in contact with the protrusion 153 in the tube portion 15e and is not allowed to enter further into the tube portion 15e. The Even with such a configuration, the distance between the puncture device 20 and the finger to be punctured can be kept moderate as in the fourth modification. In FIG. 14, one protrusion 153 is provided, but a plurality of protrusions 153 may be provided.

<Other variations>
In the embodiment, the cylindrical portion 15 is provided so as to surround the periphery of the through hole 113 of the base portion 11, but the cylindrical portion 15 may be omitted. In such a case, the inner diameter of the through-hole 113 only needs to be formed slightly smaller than the outer diameter of the injection cylinder 22 of the puncture device 20. Further, when the blood B1 is brought into contact with the biosensor 40, the biosensor 40 may be moved toward the blood B1 while the biosensor 40 is in contact with the edge of the through hole 113.

  In the embodiment, the base 11 of the blood collection aid 10 has a first base 111 supported by a first finger and a second base 112 supported by a second finger, but the base 11 is a third base. A third base supported by the fingers may be further provided. In other words, blood collection assisting tool 10 may have a shape supported by two or more fingers.

  In the embodiment, both the first contact surface 12 and the second contact surface 13 are in contact with the finger pad, but the first contact surface is in contact with the finger pad, and the second contact surface is on the back side of the finger hand. A first contact surface and a second contact surface may be provided so as to contact the surface.

  In the embodiment, a biosensor has been described as an example of a collection tool, but a collection tool to which the disclosed technology is applicable is not limited to a biosensor. The collection tool to which the disclosed technique is applied may be, for example, a dropper or a pipette.

  The embodiments and modifications disclosed above can be combined.

DESCRIPTION OF SYMBOLS 10 ... Blood collection assistance tool 11 ... Base part 111 ... 1st base part 1111 ... 1st outer wall part 112 ... 2nd base part 1121 ... 2nd outer wall part 113 ... Through-hole 12 ... 1st contact surface 121, 131 ... inner surface 122 ... 1st finger contact surface 13 ... 2nd contact surface 132 ... 2nd finger contact surface 14 ... connection part 15 ... Cylinder part 151 ... Outer wall 152 ... Inner wall 1521 ... Rim 153 ... Projection 154 ... Screw hole 20 ... Puncture tool 21 ... Body part 211 ... Ceiling part 212 ... Upper end surface 213 ... Lower end surface 22 ... Injection cylinder 221 ... Opening 23 ... Puncture button 231 ... Regulating member 24 ... Coil spring 25 ... Puncture needle 251 ... Front end 252 ... Base 30 ... Measuring device 31 ... Housing 32 ... Table Display panel 33 ... sensor insertion port 40 ... biosensor 41 ... substrate 42 ... spacer 43 ... cover 44 ... electrode pair 44a, 44b ... electrode 45 ... collection port 46 ... Flow paths

Claims (11)

A first base having a first contact surface in contact with the belly of the first finger;
A second base having a second contact surface in contact with a second finger adjacent to the first finger;
First finger contact that connects the first base and the second base and contacts a side surface of the first finger at a finger-to-finger portion between the first finger and the second finger A connecting portion having a second inter-finger contact surface that contacts a surface and a side surface of the second finger;
A through hole formed in the first base portion and penetrating from a part of the first contact surface of the first base portion to the opposite surface.
Blood collection aid. The first contact surface is a curved surface having a radius of curvature determined according to the thickness of the first finger.
The second contact surface is a curved surface having a radius of curvature determined according to the thickness of the second finger.
The blood collection aid according to claim 1. The first contact surface includes a first outer wall portion extending downward along a side surface opposite to the side surface facing the second finger among the side surfaces of the first finger,
The second contact surface includes a second outer wall portion extending downward along a side surface opposite to the side surface facing the first finger among the side surfaces of the second finger.
The blood collection aid according to claim 1 or 2. The first contact surface is formed in an annular shape so as to surround the first finger,
The second contact surface is formed in an annular shape so as to surround the second finger.
The blood collection aid according to claim 1 or 2. The through hole surrounds at least a part of the periphery of the through hole at the upper end surface of the first base opposite to the first contact surface, and extends in a direction opposite to the first contact surface from the upper end surface. Further including a cylindrical portion protruding toward the
The blood collection aid according to any one of claims 1 to 4. The through hole and the inner wall of the cylinder part are formed such that the inner diameter gradually decreases from the end of the cylinder part opposite to the first contact surface toward the first contact surface side of the through hole. To be
The blood collection aid according to claim 5. A protrusion projecting in the radial direction of the cylindrical portion from the inner wall of the cylindrical portion;
The blood collection aid according to claim 5. Of the first base and the second base, the one in contact with the longer finger of the first finger and the second finger is arranged shifted to the fingertip side than the other,
The blood collection aid according to any one of claims 1 to 7. The through hole is a size through which the sampling tool can pass,
The blood collection aid according to any one of claims 1 to 8. The second contact surface is in contact with the belly of the second finger;
The blood collection aid according to any one of claims 1 to 9. Among the connecting portions, the first inter-finger contact surface and the second inter-finger contact surface are formed by an elastic member.
The blood collection aid according to any one of claims 1 to 10.

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