Title:
心臓手術クライオプローブ
Document Type and Number:
Japanese Patent JP6694937
Kind Code:
B2
Abstract:
A cryoprobe having a working tip (1) formed of two coaxial flexible internal (2) and external (3) tubular lines, wherein the cross-section diameter of the internal line (2) is substantially smaller than the cross-section diameter of the external line (3), and the length is slightly smaller than the length of the external line (3). The external line (3) ends with a top (4) closing the working tip (1) of the cryoprobe, while the end of the internal line (2) is open, and there are openings (6) evenly distributed across the circumference on at least half of the section of the internal line (2). On the section from the handle (5) to the end located under the top (4), a resistance wire (7) is spirally wound on the internal line (2), wherein the distance between the wall of the external line (3) and the wall of the internal line (2) is larger than the diameter of the resistance wire (7). On the external line (3), no further from the top (4) located on the top of the working tip (1) than 1/3 of the length thereof, there is a temperature sensor (8) connected to the handle (5) by a power line (9). External (3') and internal (2') lines corresponding to the external (3) and internal (2) lines come out from the working tip (1) outside the handle, wherein the external (3') and internal (2') lines together with the harness of power lines (9) and (11), insulated with an insulating hose (12), are connected from the handle (5) to the unit (15) supplying air and liquid nitrogen at low pressure of up to 0.5 bars using a pump system.
Inventors:
Subaru Ski Piotr
Gournyak Tezary
Chowderly Sanjeev
Gournyak Tezary
Chowderly Sanjeev
Application Number:
JP2018213489A
Publication Date:
May 20, 2020
Filing Date:
November 14, 2018
Export Citation:
Assignee:
Medidata sp.z o.o.
International Classes:
A61B18/02
Domestic Patent References:
| JP56084810U |
Foreign References:
| US20150265330 | ||||
| WO2011142909A1 | ||||
| US20150282858 | ||||
| US20100249766 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Atsushi Honda
Hironobu Onda
Atsushi Honda