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US 2004/0176726 A1Published application
Reagent injection device
AssigneesOsamu Katoh, Asahi Intecc Co., Ltd.
InventorsOsamu Katoh, Masashi Momota, Tomihisa Kato
Life of this patent
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Abstract
Embodiments of the present invention relate to an injection devices that inject a specified reagent with cells into lesions and other areas of body tissue. Particular embodiments comprise a main tube with a projection hole on its exterior, an axially-moveable needle tube with a needle at its tip, a reagent supplier configured to supply a specified reagent into the needle tube, and axially-moveable guide wires.
Claims16
A reagent injection device comprising a main tube comprising:
- a tubular body which is insertable into a human body and which comprises a projection hole on its exterior;
- an axially-moveable needle tube comprising a thin flexible tube comprising a sharp needle at its tip, wherein the needle is inserted into the main tube and can be projected out of the projection hole;
- a reagent supplier configured to supply a specified reagent into the needle tube;
- an axially-moveable first guide wire that is inserted into the main tube and that extends through a tip aperture provided at the front of the main tube as viewed in the direction of its insertion into the body;
- and
- an axially-moveable second guide wire that is inserted into the main tube and that extends through a side hole that opens in a direction orthogonal to both the opening direction of the projection hole and the opening direction of the tip aperture, wherein, when the main tube is inserted into the body, the needle is projected out of the projection hole and pierces tissue in the body, and the reagent can be supplied from the reagent supplier through the needle tube and injected into the tissue.
3 more elements
A reagent injection device comprising:
- a flexible main tube, which is insertable into a body;
- a first guide wire that is insertable into the main tube and which is capable of moving back and forth by extending out of the main tube in the axial direction of the main tube;
- a second guide wire that is insertable into the main tube and which is capable of moving back and forth by extending out of the main tube in the direction intersecting with the first guide wire;
- a needle tube that is insertable into the main tube and which is capable of moving back and forth in the axial direction of the main tube;
- and
- a reagent supplier configured to supply reagent through the needle tube;
- wherein the needle tube can project from the main tube in the direction virtually orthogonal to the plane that includes the respective extension-direction vectors of the first and second guide wires.
4 more elements
A method of injecting a reagent into a human body, comprising:
- inserting into a human body a tubular body which comprises a main tube and a projection hole on its exterior;
- inserting an axially-moveable first guide wire that into the main tube, wherein the guide wire extends through a tip aperture provided at the front of the main tube as viewed in the direction of its insertion into the body;
- inserting an axially moveable second guide wire into the main tube, such that the second guide wire extends through a side hole that opens in a direction orthogonal to both the opening direction of the projection hole and the opening direction of the tip aperture;
- inserting into the main tube an axially-moveable needle tube comprising a thin flexible tube comprising a sharp needle at its tip;
- guiding the needle to a tissue in the body with the first and second guidewires;
- projecting the needle through the projection hole and into the tissue;
- supplying a specified reagent into the needle tube;
- and
- injecting reagent into the tissue.
6 more elements
A reagent injection device for injecting a reagent into a human body, comprising:
- a tubular body configured to be inserted into a human body and having (a) a tip aperture provided at a distal end, (b) a projection hole provided on a side, and (c) a side hole provided on a side, wherein the projection hole and the side hole are provided in directions which are generally orthogonal to each other and which are generally orthogonal to an axis of the tubular body;
- an axially-moveable needle tube formed with a thin flexible tube having a sharp needle at its tip, wherein the needle is inserted into the tubular body and can project through the projection hole;
- an axially-moveable first guide wire that is inserted into the tubular body and that extends through the tip aperture;
- and
- an axially-moveable second guide wire that is inserted into the tubular body and that extends through the side hole, wherein when the first and the second guide wires extend, the first and the second guide wires define a plane S;
- and
- a reagent supplier configured to supply a reagent into the needle tube, wherein when the tubular body is inserted into the body, the needle projects through the projection hole and pierces tissue in the body in a direction generally orthogonal to the plane S, and the reagent can be supplied from the reagent supplier through the needle tube and injected into the tissue.
4 more elements
Dependencies are inferred from the claim text.