EP0251745A1
Expired / Lapsed
EP
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A dielectric-heating electrode device for hyperthermia
Assignee: Kureha Corp
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Filing: 1987-06-26
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Granted: —
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Expires: 2007-06-26
Abstract
Abstract An electrode device for heating endotract by an electric field with a high-frequency for use in the thermotherapy of cancers or the likes at the inside of a living body in which a high-frequency generating portion is surrounded with a flexible and gastight bag-like member and a coolant is filled to the inside of the bag-like member, wherein a gastight gas member having a function of supplying and discharging a gas into and out of the bag-like member is disposed to a portion on an outer circumference of the bag-like member.
Inventors
- 👤 Kiyoshi Kitagawa
- 👤 Chikau Onodera
- 👤 Tadashi Onuma
- 👤 Akira Sogawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 05:33
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/12; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/06; A61N1/40; A61N1/403
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
An electrode device for endotract heating by an electric field with a high frequency for use in the thermotherapy of cancers or the like at the inside of a living body, the device having a high-frequency generating portion (11) surrounded with a flexible and gastight bag-like member (12) means (16, 17) to supply coolant to, and withdraw it from, the inside said bag-like member, and including a gastight bag member (21) having means (40) for supplying and discharging a gas thereto disposed on a portion of the outside of said bag-like member (12).
Claim 2
Dependent Claim
93 words
An electrode device for endotract heating by an electric field with a high frequency for use in the thermotherapy of cancers or the like at the inside of a living body, the device having a high-frequency generating portion (11) surrounded with a flexible and gastight bag-like member (12) means (16, 17) to supply coolant to, and withdraw it from, the inside said bag-like member, and including a gastight bag member (21) having means (40) for supplying and discharging a gas thereto disposed on a portion of the outside of said bag-like member (12).
Claim 3
Dependent Claim
47 words
An electrode device as defined in claim 1, wherein the high-frequency generating portion comprises a flexible support member (8) and a flexible electrode (11) supported with said support member, one end of said flexible electrode being situated on a side of one end of said support member.
Claim 4
Dependent Claim
26 words
An electrode device as defined in claim 2, wherein the flexible electrode comprises one of a helical metal wire, a bellow and a tubular braided member.
Claim 5
Dependent Claim
37 words
An electrode device as defined in claim 2 or 3 wherein the support member (8) comprises a two-channel tube in which a channel for supplying a coolant and a channel for discharging a coolant are formed integrally.
Claim 6
Dependent Claim
42 words
An electrode device as defined in claim 4, wherein said two-channel tube has coolant supply and discharge ports communicating the space between the outside of the support member and inside of the bag-like member with the coolant supply and discharging channels respectively.
Claim 7
Dependent Claim
37 words
An electrode device as defined in any preceding claim, wherein the flexible bag-like member is made of a high molecular polymer and has a size approximate to that of an inner wall of a tubular endotract organ.
Claim 8
Dependent Claim
44 words
An electrode device as defined in any preceding claim including a temperature detection means secured on an outer surface of the flexible bag-like member, to be brought into close contact with the tract wall when the flexible bag-like member is expanded by the coolant.
Claim 9
Dependent Claim
38 words
An electrode device as defined in any preceding claim wherein the gastight bag member comprises a molding body or balloon made of synthetic or natural rubber, which is readily extended or expanded by the introduction of the gas.
Claim 10
Dependent Claim
48 words
An electrode device as defined in any preceding claim wherein the gastight bag member is disposed on a portion of or on an entire circumferential or axial part of the bag-like member except for a portion corresponding to the aimed portion to be heated of the living body.
Claim 11
Dependent Claim
24 words
An electrode device as defined in any preceding claim wherein a tube for introducing and discharging the gas leads to the gastight bag member.
Claim 12
Dependent Claim
25 words
An electrode device as defined in any preceding claim, wherein the gastight bag member is bonded to the bag-like member by means of an adhesive.
References Cited (Backward Citations)
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