Reagent injection device
First Claim
Patent Images
1. A reagent injection device comprising:
- a flexible main tube, which is insertable into a body, said main tube comprising first, second, and third lumens provided therein, said third lumen being disposed closer to an axial center of the main tube than are the first and second lumens;
a first guide wire that is insertable into the main tube through the first lumen and which is configured to guide the first guide wire to move back and forth by extending out of the main tube at a first position in an axial direction of the main tube;
a second guide wire that is insertable into the main tube through the second lumen which is configured to guide the second guide wire to move back and forth by extending out of the main tube at a second position in a direction away from the first guide wire, wherein the first guide wire and the second guide wire are extendable from the main tube on a common plane with reference to the extended first guide wire and the extended second guide wire, said common plane being formed by the extended first guide wire and the extended second guide wire and extending through the extended first guide wire, the extended second guide wire, and the main tube; and
a needle tube that is insertable into the main tube through the third lumen and which is configured to guide the needle tube to move back and forth by projecting from the main tube at a third position in a direction substantially or nearly orthogonal to the common plane and away from the common plane by using the first and second guide wires on the common plane as a support structure, said third position being disposed between the first position and the second position in the axial direction of the main tube,wherein the main tube further comprises an expandable and/or shrinkable balloon attached to its exterior, and a fourth lumen that supplies fluid for expanding the balloon is further provided inside of the main tube such that the center of the projection hole is positioned in the same plane that includes the center axis of the fourth lumen and the center axis of the main tube.
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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.
121 Citations
16 Claims
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1. A reagent injection device comprising:
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a flexible main tube, which is insertable into a body, said main tube comprising first, second, and third lumens provided therein, said third lumen being disposed closer to an axial center of the main tube than are the first and second lumens; a first guide wire that is insertable into the main tube through the first lumen and which is configured to guide the first guide wire to move back and forth by extending out of the main tube at a first position in an axial direction of the main tube; a second guide wire that is insertable into the main tube through the second lumen which is configured to guide the second guide wire to move back and forth by extending out of the main tube at a second position in a direction away from the first guide wire, wherein the first guide wire and the second guide wire are extendable from the main tube on a common plane with reference to the extended first guide wire and the extended second guide wire, said common plane being formed by the extended first guide wire and the extended second guide wire and extending through the extended first guide wire, the extended second guide wire, and the main tube; and a needle tube that is insertable into the main tube through the third lumen and which is configured to guide the needle tube to move back and forth by projecting from the main tube at a third position in a direction substantially or nearly orthogonal to the common plane and away from the common plane by using the first and second guide wires on the common plane as a support structure, said third position being disposed between the first position and the second position in the axial direction of the main tube, wherein the main tube further comprises an expandable and/or shrinkable balloon attached to its exterior, and a fourth lumen that supplies fluid for expanding the balloon is further provided inside of the main tube such that the center of the projection hole is positioned in the same plane that includes the center axis of the fourth lumen and the center axis of the main tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of injecting a reagent into a human body, comprising:
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inserting into a human body a tubular body which comprises a main tube and a projection hole on its exterior, said main tube comprising first, second, and third lumens provided therein, said third lumen being communicated with the projection hole and disposed closer to an axial center of the main tube than are the first and second lumens; inserting an axially-moveable first guide wire into the main tube through the first lumen, wherein the first 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 through the second lumen, wherein the second guide wire extends through a side hole that opens in a direction such that the first and second guide wires are extended from the main tube on a common plane with reference to the extended first guide wire and the extended second guide wire, said common plane being formed by the extended first guide wire and the extend second guide wire, extending through the extended first guide wire, the extended second guide wire, and the main tube, and being substantially or nearly orthogonal to an opening direction of the projection hole which is disposed between the tip aperture and the side hole in an axial direction of the main tube; inserting an axially-moveable needle into the main tube through the third lumen; guiding the needle to a tissue in the body with the first and second guide wires; projecting the needle through the projection hole and into the tissue in a direction substantially or nearly orthogonal to the common plane and away from the common plane by using the first and second guide wires on the common plane as a support structure; supplying a specified reagent into the needle tube; and injecting reagent into the tissue.
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11. A reagent injection device for injecting a reagent into a human body, comprising:
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a tubular body configured to be inserted into a human body and comprising a main tube 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 is disposed between the tip aperture and the side hole in an axial direction of the main tube, said main tube comprising a first lumen communicated with the tip aperture, a second lumen communicated with the side hole, and a third lumens communicated with the projection hole and disposed closer to an axial center of the main tube than are the first and second lumens; an axially-moveable first guide wire that is inserted into the tubular body through the first lumen and that is configured to extend through the tip aperture in an axial direction of the tubular body; and an axially-moveable second guide wire that is inserted into the tubular body through the second lumen and that is configured to extend through the side hole in a direction such that when the first and the second guide wires extend, the first and the second guide wires define a common plane with reference to the extended first guide wire and the extended second guide wire, said common plane being formed by the extended first guide wire and the extended second guide wire and extending through the extended first guide wire, the second extended guide wire, and the main tube; an axially-moveable needle tube for injecting a reagent which is formed with a thin flexible tube, wherein the needle tube is inserted into the tubular body through the third lumen and is configured to project through the projection hole in a direction substantially or nearly orthogonal to the common plane, wherein when the tubular body is inserted into the body, the needle projects through the projection hole and pierces tissue in the body in the direction substantially or nearly orthogonal to the common plane and away from the common plane by using the first and second guide wires on the common plane as a support structure, and a reagent can be supplied through the needle tube and injected into the tissue. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification