Lancet device
First Claim
1. A lancet device comprising:
- a lancet including a puncture needle mounted to a tip thereof, the lancet being configured to perform a puncture by moving the puncture needle forward in a puncture direction along a longitudinal axis of the lancet device;
a lancet holder including a mounting portion that deforms inwardly toward the lancet for removably retaining a base end portion of the lancet inserted thereinto; and
a fastening member configured to make contact with an outer peripheral surface of the mounting potion of the lancet holder for causing the mounting portion of the lancet holder to deform inwardly for retaining the lancet with a frictional force acting in a direction transverse to the longitudinal axis, the frictional force increasing for causing the lancet holder to tightly retain the lancet when the fastening member is moved relative to the lancet holder in a first direction along the longitudinal axis, the frictional force being reduced or removed for causing the lancet holder to release the lancet when the fastening member is moved relative to the lancet holder in a second direction opposite to the first direction along the longitudinal axis.
1 Assignment
0 Petitions
Accused Products
Abstract
A lancet device is configured for performing a puncture by mounting a lancet including a puncture needle to the tip of a puncture body holder. The lancet device has a simple configuration that makes it possible to strengthen the retaining force for retaining the lancet when the lancet is used. In the lancet device, an insertion portion of a puncture body that is inserted into a mounting portion of the puncture body holder is retained by means of the frictional force. A fastening member provided in a main body side makes contact with the outer peripheral portion of the mounting portion of the puncture body holder and inwardly fastens the mounting portion when the fastening member is moved in the puncture direction relative to the puncture body holder.
5 Citations
21 Claims
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1. A lancet device comprising:
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a lancet including a puncture needle mounted to a tip thereof, the lancet being configured to perform a puncture by moving the puncture needle forward in a puncture direction along a longitudinal axis of the lancet device; a lancet holder including a mounting portion that deforms inwardly toward the lancet for removably retaining a base end portion of the lancet inserted thereinto; and a fastening member configured to make contact with an outer peripheral surface of the mounting potion of the lancet holder for causing the mounting portion of the lancet holder to deform inwardly for retaining the lancet with a frictional force acting in a direction transverse to the longitudinal axis, the frictional force increasing for causing the lancet holder to tightly retain the lancet when the fastening member is moved relative to the lancet holder in a first direction along the longitudinal axis, the frictional force being reduced or removed for causing the lancet holder to release the lancet when the fastening member is moved relative to the lancet holder in a second direction opposite to the first direction along the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A lancet device comprising:
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a lancet including a puncture needle mounted to a tip thereof, the lancet being configured to perform a puncture by moving the puncture needle forward in a puncture direction along a longitudinal axis of the lancet device; a lancet holder including a mounting portion that retains a base end portion of the lancet inserted thereinto; and a fastening member configured to make contact with an outer peripheral surface of the mounting potion of the lancet holder for causing the lancet holder to retain the lancet with a frictional force acting in a direction transverse to the longitudinal axis, the frictional force increasing when the fastening member is moved relative to the lancet holder in a first direction along the longitudinal axis, the frictional force being reduced or removed when the fastening member is moved relative to the lancet holder in a second direction opposite to the first direction along the longitudinal axis; wherein the outer peripheral surface of the mounting portion of the lancet holder and the fastening member are configured to make contact with each other by moving the lancet holder in a retreating direction opposite to the puncture direction relative to the fastening member for retaining the lancet; and wherein the lancet is released from the lancet holder by moving the lancet holder in the puncture direction with respect to the fastening member.
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18. A lancet device comprising:
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a lancet including a puncture needle mounted to a tip thereof, the lancet being configured to perform a puncture by moving the puncture needle forward in a puncture direction along a longitudinal axis of the lancet device; a lancet holder including a mounting portion that deforms inwardly toward the lancet for removably retaining a base end portion of the lancet inserted thereinto; and a fastening member configured to make contact with an outer peripheral surface of the mounting potion of the lancet holder for causing the mounting portion of the lancet holder to deform inwardly for retaining the lancet with a frictional force acting in a direction transverse to the longitudinal axis, the frictional force increasing when the fastening member is moved relative to the lancet holder in a first direction along the longitudinal axis, the frictional force being reduced or removed when the fastening member is moved relative to the lancet holder in a second direction opposite to the first direction along the longitudinal axis; wherein the outer peripheral surface of the mounting portion of the lancet holder and the fastening member are configured to make contact with each other by moving the fastening member in a retreating direction opposite to the puncture direction relative to the lancet holder for retaining the lancet; and wherein the fastening member includes a tapering front portion that has an inner diameter becoming smaller toward the needle in the puncture direction.
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19. A lancet device comprising:
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a lancet including a puncture needle mounted to a tip thereof, the lancet being configured to perform a puncture by moving the puncture needle forward in a puncture direction along a longitudinal axis of the lancet device; a lancet holder including a mounting portion that deforms inwardly toward the lancet for removably retaining a base end portion of the lancet inserted thereinto; and a fastening member configured to make contact with an outer peripheral surface of the mounting potion of the lancet holder for causing the mounting portion of the lancet holder to deform inwardly for retaining the lancet with a frictional force acting in a direction transverse to the longitudinal axis, the frictional force increasing when the fastening member is moved relative to the lancet holder in a first direction along the longitudinal axis, the frictional force being reduced or removed when the fastening member is moved relative to the lancet holder in a second direction opposite to the first direction along the longitudinal axis; and an urging member provided between the fastening member and the lancet holder, the urging member being configured to urge the lancet holder in the puncture direction.
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20. A lancet device comprising:
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a lancet including a puncture needle mounted to a tip thereof, the lancet being configured to perform a puncture by moving the puncture needle forward in a puncture direction along a longitudinal axis of the lancet device; a lancet holder including a mounting portion that deforms inwardly toward the lancet for removably retaining a base end portion of the lancet inserted thereinto; and a fastening member configured to make contact with an outer peripheral surface of the mounting potion of the lancet holder for causing the mounting portion of the lancet holder to deform inwardly for retaining the lancet with a frictional force acting in a direction transverse to the longitudinal axis, the frictional force increasing when the fastening member is moved relative to the lancet holder in a first direction along the longitudinal axis, the frictional force being reduced or removed when the fastening member is moved relative to the lancet holder in a second direction opposite to the first direction along the longitudinal axis; wherein the lancet holder retains the base end portion of the lancet by means of the frictional force.
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21. A lancet device comprising:
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a lancet including a puncture needle mounted to a tip thereof, the lancet being configured to perform a puncture by moving the puncture needle forward in a puncture direction along a longitudinal axis of the lancet device; a lancet holder including a mounting portion that deforms inwardly toward the lancet for removably retaining a base end portion of the lancet inserted thereinto; and a fastening member configured to make contact with an outer peripheral surface of the mounting potion of the lancet holder for causing the mounting portion of the lancet holder to deform inwardly for retaining the lancet with a frictional force acting in a direction transverse to the longitudinal axis, the frictional force increasing when the fastening member is moved relative to the lancet holder in a first direction along the longitudinal axis, the frictional force being reduced or removed when the fastening member is moved relative to the lancet holder in a second direction opposite to the first direction along the longitudinal axis; wherein the base end portion includes a groove formed in a surface of the base end portion for engagement with the fastening member, and wherein the fastening member includes a projection configured to engage with the groove.
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Specification