PUNCTURE DEVICE AND CHEMICAL LIQUID SUPPLYING DEVICE
First Claim
1. A puncture device comprising:
- a puncture needle having a double structure including an outer needle and an inner tube located in the outer needle;
a housing unit accommodating the puncture needle; and
a puncture mechanism provided within the housing unit, the puncture mechanism including;
a push-in unit configured to be pushed in with respect to the housing unit,an outer needle slide unit attached to the outer needle and configured to slide within the housing unit,a stopper providing releasable fixation between the push-in unit and the outer needle slide unit and releasable fixation between the inner tube inserted into the outer needle and the outer needle slide unit,an elastic member, a first end of which is fixed to the housing unit and a second end of which is fixed to the outer needle slide unit, anda fixation release unit configured to release the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube,wherein, when the push-in unit is pushed in under the condition of fixation between the push-in unit and the outer needle slide unit, and fixation between the outer needle slide unit and the inner tube, the outer needle containing the inner tube therein projects from the housing unit in accordance with sliding of the outer needle slide unit in a first direction, andwherein, when the outer needle slide unit slides to a predetermined position, the outer needle is retracted into the housing unit while the inner tube remains projected from the housing, in accordance with release of the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube, and in accordance with sliding of the outer needle slide unit in a second direction by operation of the elastic member.
1 Assignment
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Accused Products
Abstract
A puncture device includes a puncture needle having a double structure including an outer needle and an inner tube located in the outer needle; a housing unit accommodating the puncture needle; and a puncture mechanism provided within the housing unit. The puncture mechanism includes a push-in unit configured to be pushed in with respect to the housing unit, an outer needle slide unit attached to the outer needle and configured to slide within the housing unit, a stopper providing releasable fixation between the push-in unit and the outer needle slide unit and releasable fixation between the inner tube inserted into the outer needle and the outer needle slide unit, an elastic member, a first end of which is fixed to the housing unit and a second end of which is fixed to the outer needle slide unit, and a fixation release unit configured to release the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube.
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Citations
20 Claims
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1. A puncture device comprising:
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a puncture needle having a double structure including an outer needle and an inner tube located in the outer needle; a housing unit accommodating the puncture needle; and a puncture mechanism provided within the housing unit, the puncture mechanism including; a push-in unit configured to be pushed in with respect to the housing unit, an outer needle slide unit attached to the outer needle and configured to slide within the housing unit, a stopper providing releasable fixation between the push-in unit and the outer needle slide unit and releasable fixation between the inner tube inserted into the outer needle and the outer needle slide unit, an elastic member, a first end of which is fixed to the housing unit and a second end of which is fixed to the outer needle slide unit, and a fixation release unit configured to release the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube, wherein, when the push-in unit is pushed in under the condition of fixation between the push-in unit and the outer needle slide unit, and fixation between the outer needle slide unit and the inner tube, the outer needle containing the inner tube therein projects from the housing unit in accordance with sliding of the outer needle slide unit in a first direction, and wherein, when the outer needle slide unit slides to a predetermined position, the outer needle is retracted into the housing unit while the inner tube remains projected from the housing, in accordance with release of the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube, and in accordance with sliding of the outer needle slide unit in a second direction by operation of the elastic member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A chemical liquid supplying device comprising:
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a puncture needle having a double structure including an outer needle and an inner tube located in the outer needle; a housing unit accommodating the puncture needle; a puncture mechanism provided within the housing unit; a chemical liquid storage unit configured to store a chemical liquid; and a delivery unit configured to deliver the chemical liquid from the chemical liquid storage unit via the inner tube, wherein the puncture mechanism includes; a push-in unit configured to be pushed in with respect to the housing unit, an outer needle slide unit attached to the outer needle and configured to slide within the housing unit, a stopper providing releasable fixation between the push-in unit and the outer needle slide unit and releasable fixation between the inner tube inserted into the outer needle and the outer needle slide unit, an elastic member, a first end of which is fixed to the housing unit and a second end of which is fixed to the outer needle slide unit, and a fixation release unit configured to release the fixation between the push-in unit and the outer needle slide unit, and the fixation between the outer needle slide unit and the inner tube, wherein, when the push-in unit is pushed in under the condition of fixation between the push-in unit and the outer needle slide unit, and fixation between the outer needle slide unit and the inner tube, the outer needle containing the inner tube therein projects from the housing unit in accordance with sliding of the outer needle slide unit in a first direction, and wherein, when the outer needle slide unit slides to a predetermined position, the outer needle is retracted into the housing unit while the inner tube remains projected from the housing, in accordance with release of the fixation between the push-in unit and the outer needle slide unit and the fixation between the outer needle slide unit and the inner tube, and in accordance with sliding of the outer needle slide unit in a second direction by operation of the elastic member. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification