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EP-4736762-A1 - BLOOD COLLECTION DEVICE

EP4736762A1EP 4736762 A1EP4736762 A1EP 4736762A1EP-4736762-A1

Abstract

The present invention provides a blood collection device capable of efficiently and inexpensively performing puncture of a proper depth onto a finger of a person subjected to blood collection regardless of the properties of the finger. This blood collection device comprises: a puncture part (120) having a puncture needle (121); a puncture mechanism for moving the puncture part (120) and puncturing a finger (134) of a person subjected to blood collection with the puncture needle (121); and a control part for controlling the operation of the puncture mechanism. The puncture mechanism is a mechanism of lifting the puncture part (120) from below the finger (134) to puncture the finger (134) with the puncture needle (121). The control part controls the operation of the puncture mechanism to drive the rise and fall of the puncture part, and stops the rise of the puncture part (120) by the puncture mechanism by detecting the contact of the puncture part (120) with the finger (134).

Inventors

  • SUGIYAMA KIMIKAZU
  • NUNOKAWA HIROAKI

Assignees

  • HITACHI HIGH-TECH CORPORATION

Dates

Publication Date
20260506
Application Date
20240611

Claims (9)

  1. A blood collection device comprising: a puncture part having a puncture needle; a puncture mechanism configured to move the puncture part and puncture a finger of a person subjected to blood collection with the puncture needle; and a control part configured to control an operation of the puncture mechanism, wherein the puncture mechanism is a mechanism that lifts the puncture part from below the finger to puncture the finger with the puncture needle, and the control part controls the operation of the puncture mechanism to drive rise and fall of the puncture part, and stops the rise of the puncture part by the puncture mechanism by detecting contact of the puncture part with the finger.
  2. The blood collection device according to claim 1, wherein an amount of movement by which the puncture part is lifted by the puncture mechanism is controlled to a predetermined amount of movement set in advance for a plurality of the persons subjected to blood collection.
  3. The blood collection device according to claim 2, wherein the amount of movement by which the puncture part is lifted by the puncture mechanism is controlled to match a distance between the finger placed on a finger placement place and the puncture part at an initial position.
  4. The blood collection device according to claim 1, wherein the puncture mechanism includes a lifting member that is driven to move up and down, a base member that is supported by the lifting member, a movable support member that lifts the puncture part from below, and an elastic member that elastically supports the movable support member to be movable up and down with respect to the base member, and puncture of the puncture needle to the finger is performed in a state where the movable support member is biased in an upward direction by the elastic member.
  5. The blood collection device according to claim 4, wherein the contact of the puncture part with the finger is detected by detecting lowering of the movable support member against the bias of the elastic member, which is an operation caused by the contact of the puncture part with the finger.
  6. The blood collection device according to claim 5, wherein the lowering of the movable support member is detected by a detection target part that moves up and down together with the movable support member with respect to the base member and a detection sensor that detects that the detection target part moves to a predetermined position.
  7. The blood collection device according to claim 1, further comprising: a holder configured to hold a blood collection tube; a movement mechanism configured to move the holder to press the blood collection tube against the finger of the person subjected to blood collection; and a control part configured to control an operation of the movement mechanism, wherein the movement mechanism is a mechanism that lifts the holder from below the finger to press the blood collection tube against the finger, and the control part controls the operation of the movement mechanism to drive rise and fall of the holder, and an amount of upward movement of the holder by the movement mechanism is set based on an amount of movement of the puncture part measured when the puncture part is lifted.
  8. The blood collection device according to claim 1, further comprising: a module configured to hold a hemostatic material for hemostasis at a puncture site of the person subjected to blood collection; a movement mechanism configured to move the module to press the hemostatic material against the finger of the person subjected to blood collection; and a control part configured to control an operation of the movement mechanism, wherein the movement mechanism is a mechanism that lifts the module from below the finger to press the hemostatic material against the finger, and the control part controls the operation of the movement mechanism to drive rise and fall of the module, and an amount of upward movement of the module by the movement mechanism is set based on an amount of movement of the puncture part measured when the puncture part is lifted.
  9. The blood collection device according to claim 1, further comprising: a module configured to hold a protective material for protecting a puncture site of the person subjected to blood collection; a movement mechanism configured to move the module to press the protective material against the finger of the person subjected to blood collection; and a control part configured to control an operation of the movement mechanism, wherein the movement mechanism is a mechanism that lifts the module from below the finger to press the protective material against the finger, and the control part controls the operation of the movement mechanism to drive rise and fall of the module, and an amount of upward movement of the module by the movement mechanism is set based on an amount of movement of the puncture part measured when the puncture part is lifted.

Description

Technical Field The present invention relates to a blood collection device for automatically collecting blood from a finger of a person subjected to blood collection. Background Art In the related art, a blood collection device for automatically collecting blood from a finger of a person subjected to blood collection has been developed. As the blood collection device that automatically performs blood collection, there is a blood collection device in which a finger of a person subjected to blood collection is placed on a predetermined finger placement place, a puncture needle is automatically punctured into the finger, and blood flowing out from a puncture site is collected into a blood collection tube. PTL 1 discloses a blood collection device that automatically collects blood from a finger of a person subjected to blood collection. This blood collection device is configured such that a perforator holder in which a puncture needle is built is lifted from below the finger so that a puncture needle punctures the finger. When the perforator holder is pressed by a push rod component, a perforator and a finger come into contact with each other, and the perforator receives a load equal to or greater than a certain level to puncture the finger. PTL 2 discloses a blood test apparatus that punctures a finger with laser light and supplies blood to a blood sensor. The blood test apparatus includes a finger regulation member that regulates a position of the finger. By regulating the position of the finger with the finger regulation member, blood flowing out from the finger is easily stored in a reservoir. PTL 3 discloses a body fluid collection aid used when collecting a body fluid from a puncture site on a living body surface. The body fluid collection aid is configured such that a puncture depth of a puncture needle to a fingertip is adjusted by a dial-type adjustment part. The puncture depth of the puncture needle to the fingertip is set to a puncture depth corresponding to an individual difference between persons subjected to blood collection and a puncture site. Citation List Patent Literature PTL 1: JP2017-225519APTL 2: JP2009-089818APTL 3: JP2006-223320A Summary of Invention Technical Problem In a blood collection device that automatically performs blood collection, when blood is collected from a finger of a person subjected to blood collection, it is necessary to puncture the finger with a puncture needle just enough. If the puncture is insufficient, it is necessary to ensure a sufficient puncture depth because the puncture does not reach a blood vessel or a required blood collection amount cannot be ensured. Meanwhile, if the puncture is excessive, a strong puncture pain may occur, so that a puncture depth more than necessary is to be avoided. In the blood collection device that automatically performs blood collection, automatic movement of a puncture part to which a puncture needle is attached is controlled from an initial position to a position at which the finger of the person subjected to blood collection is punctured. In the blood collection device, a function of ensuring an appropriate puncture depth is required in order to perform puncture with just a right amount of depth. After the puncture part to which the puncture needle is attached is precisely moved from the initial position to a position close to a surface of the finger placed on a finger placement place, the puncture part needs to be pushed into the finger such that a tip of the puncture needle is within a predetermined puncture depth range. As the blood collection device that automatically performs blood collection, there is a blood collection device that punctures a finger of a person subjected to blood collection with a puncture needle and automatically collects blood flowing down from a puncture site into a blood collection tube. In a case of such a method, a window-shaped opening penetrating up and down may be provided in the finger placement place. The finger of the person subjected to blood collection is placed on the finger placement place so that a ventral side is exposed downward from the opening. In the case of such a method, the puncture part to which the puncture needle is attached is lifted from below the finger placed on the finger placement place to perform puncture with the puncture needle. Therefore, the puncture part is driven to rise so that the tip of the puncture needle is within the predetermined puncture depth range. However, there are individual differences in a size, a thickness, a distance from a surface to a blood vessel, a degree of swelling when blood is congested, and the like among fingers of persons subjected to blood collection. When the finger of the person subjected to blood collection is placed on a finger placement place provided with an opening, various individual differences also occur in a width in a vertical direction of fingers that protrude downward from the opening. In such a case, there is a problem