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  1. C100 医学部/医学系研究科
  2. C100b 紀要
  3. Nagoya journal of medical science
  4. 77(3)

Gel phantom study of a cryosurgical probe with a thermosiphon effect and liquid nitrogen-cooled aluminum thermal storage blocks

https://doi.org/10.18999/nagjms.77.3.399
https://doi.org/10.18999/nagjms.77.3.399
1c1bfa75-857c-43fa-986a-76baf7f9a202
名前 / ファイル ライセンス アクション
19_Isoda.pdf 19_Isoda.pdf (513.3 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2015-09-07
タイトル
タイトル Gel phantom study of a cryosurgical probe with a thermosiphon effect and liquid nitrogen-cooled aluminum thermal storage blocks
著者 Isoda, Haruo

× Isoda, Haruo

WEKO 60399

Isoda, Haruo

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Takehara, Yasuo

× Takehara, Yasuo

WEKO 60400

Takehara, Yasuo

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Fujino, Hitoshi

× Fujino, Hitoshi

WEKO 60401

Fujino, Hitoshi

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Sone, Kazuya

× Sone, Kazuya

WEKO 60402

Sone, Kazuya

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Suzuki, Takeshi

× Suzuki, Takeshi

WEKO 60403

Suzuki, Takeshi

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Tsuzaki, Yoshinari

× Tsuzaki, Yoshinari

WEKO 60404

Tsuzaki, Yoshinari

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Miyazaki, Kouji

× Miyazaki, Kouji

WEKO 60405

Miyazaki, Kouji

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Fujie, Michio

× Fujie, Michio

WEKO 60406

Fujie, Michio

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Sakahara, Harumi

× Sakahara, Harumi

WEKO 60407

Sakahara, Harumi

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Maekawa, Yasuaki

× Maekawa, Yasuaki

WEKO 60408

Maekawa, Yasuaki

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キーワード
主題Scheme Other
主題 cryoablation
キーワード
主題Scheme Other
主題 cryosurgery
キーワード
主題Scheme Other
主題 cryotherapy
キーワード
主題Scheme Other
主題 thermosiphon
キーワード
主題Scheme Other
主題 phantom study
抄録
内容記述 Cryosurgery is a minimally invasive treatment for certain types of cancers. Argon-based cryosurgical devices are available at present, however a large compressed gas cylinder with the pressure of 300 atmospheres is needed. To overcome these drawbacks, we developed a new cryosurgical probe measuring about 50 cm in length with separate lumens inside for liquid and gaseous ethylene to be used as a thermosiphon and liquid nitrogen-cooled aluminum thermal storage blocks. The probe needle was 8 cm in length and 3 mm in outer diameter. To investigate the freezing capabilities of our new cryosurgical system we inserted the needle 5cm into a poly-acrylamide gel phantom warmed to 36.5 °C. Thermal storage blocks made of aluminum, cooled at –196 °C in liquid nitrogen, were attached to the condenser of the probe and replaced with thermal storage blocks every 4 to 5 minutes to compensate for warming. We took digital camera images of the ice ball at the needle and measured the temperature in certain locations of the cryoprobe. Ice ball formation started at one minute after cooling. The sizes (longest diameter × minimum diameter) at 10, 20 and 30 minutes after the start of the procedure were 4.5×2.1, 4.5×3.1 and 4.6×3.7 cm, respectively. During the procedure the minimum temperature of the condenser was –85 °C and the needle was –65 °C. This newly developed compact cryosurgical probe with thermosiphon effect and cooled thermal storage blocks created an ice ball that can be used for cryosurgery within 20 minutes.
内容記述タイプ Abstract
出版者
出版者 Nagoya University Graduate School of Medicine, School of Medicine
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
ID登録
ID登録 10.18999/nagjms.77.3.399
ID登録タイプ JaLC
ISSN(print)
収録物識別子タイプ ISSN
収録物識別子 0027-7622
書誌情報 Nagoya Journal of Medical Science

巻 77, 号 3, p. 399-407, 発行日 2015-08
著者版フラグ
値 publisher
URI
識別子 http://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/773.html
識別子タイプ URI
URI
識別子 http://hdl.handle.net/2237/22986
識別子タイプ HDL
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