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CN87204852U - Intracorporal liquid nitrogen cryotherapy device - Google Patents

Intracorporal liquid nitrogen cryotherapy device Download PDF

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Publication number
CN87204852U
CN87204852U CN 87204852 CN87204852U CN87204852U CN 87204852 U CN87204852 U CN 87204852U CN 87204852 CN87204852 CN 87204852 CN 87204852 U CN87204852 U CN 87204852U CN 87204852 U CN87204852 U CN 87204852U
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CN
China
Prior art keywords
nitrogen
liquid nitrogen
carrier pipe
freezing head
cold
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN 87204852
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Chinese (zh)
Inventor
张湘民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 87204852 priority Critical patent/CN87204852U/en
Publication of CN87204852U publication Critical patent/CN87204852U/en
Withdrawn legal-status Critical Current

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Abstract

Tht utility model discloses a liquid nitrogen cryotherapy device, which is suitable for going deep into the organs and tissues of human body to proceed the cryotherapy. The device is charecterized in that the outer circle of the nontherapeutic part of a cryopencil is provided with a thermal gas cold insulation cavity connected with a thermal gas source. A nitrogen gas separators is connected between a liquid nitrogen conveying pipe and the cryopencil; the nitrogen gas is separated out when the liquid nitrogen and the nitrogen gas flow through under biphased condition to increase the liquid nitrogen which enters into the cryopencil therapy end, and enhance the refrigeration performance; the nitrogen gas which is heated by the electric heating pipe flows through the thermal gas cold insulation cavity of the nontherapeutic part of a cryopencil, and has a good cold insulation effect.

Description

Intracorporal liquid nitrogen cryotherapy device
This utility model relates to a kind of modified model liquid nitrogen cryotherapy device that gos deep into carrying out in the human organ tissue cold therapy that is applicable to.
The medical cryoextractor tool is when being used for the treatment of human organ and organizing the focus in deep, and the non-treatment part of its freezing head needs good every cold performance, in order to avoid the cold injury normal structure.This class cryosurgical engineering more effectively is commonly considered as vacuum chamber every cold process every cooling method at present, promptly makees the vacuum chamber of a sealing in the periphery of freezing non-treated area.For reaching good in cold effect, vacuum chamber needs bigger, and vacuum need remain on 10 -4More than the millimetres of mercury.This freezing head technique technical sophistication, the cost height, not only difficulty was done very carefully but also fragile.According to the domestic and international update that the 3rd national medical refrigeration in 1986 and apparatus academic conference provide, this freezing head that is used for the deep tissue cold therapy still all adopts vacuum chamber every cold, and minimum diameter is 2 millimeters.Also some cold therapy device adopts thermo electric material and insulation material to carry out every cold, but because of volume is bigger, is only applicable to superficial place at present and exposes good body cavity do cold therapy.
Task of the present utility model provides a kind of improved liquid nitrogen cryotherapy device, and the refrigeration performance that existing height is held in treatment of its freezing head, non-treatment part have good in cold effect again, and can do very carefully.
Task of the present utility model is finished as follows: the periphery freezing non-treatment part has been done a steam every cold chamber, this steam is communicating with exhaustor near freezing head treatment end place every cold chamber, the other end then is communicated with an electrothermal tube, is communicated with respectively in the porch of electrothermal tube from the nitrogen carrier pipe of liquid nitrogen container and from the nitrogen isocon of nitrogen separation device.Liquid nitrogen in the liquid nitrogen container is by the two-phase transmission means, the nitrogen separation device of before entering freezing head, flowing through earlier, isolate most of nitrogen wherein, these nitrogen and flowed through jointly by the nitrogen that the nitrogen carrier pipe transports and to flow through the steam of freezing head after the electrothermal tube heating again every cold chamber are diverted into exhaustor to nearly freezing head treatment end and discharge.Around the capillary liquid nitrogen carrier pipe and exhaustor of steam around freezing head, keep freezing non-treatment part surface to be in higher temperature, unlikely cold injury normal structure effectively.In addition, owing to be the liquid nitrogen and the first capillary liquid nitrogen carrier pipe that after the nitrogen separation device is isolated most of nitrogen, just flows in the freezing head of nitrogen of two-phase state, obviously increase so arrive the amount of liquid nitrogen of freezing vaporizer, make freezing head treatment end produce good refrigeration performance.The nitrogen shunt volume of regulating the nitrogen separation device just can be controlled the flow of liquid nitrogen in the freezing head indirectly, can control the speed and the degree of freezing head treatment end refrigeration.When cold therapy finished, hot nitrogen also can play a part to quicken freezing rewarming.
Freezing head treatment end refrigeration performance of the present utility model is good, and non-treatment part is every cold reliable for effect, and Technology is less demanding, and is cheap, can do it thinly as needle-like, and minimum diameter has reached 1.6 millimeters, can directly insert and carry out cold therapy in the vitals tissue.
Below with reference to accompanying drawing this utility model is described in further detail.
Fig. 1 is the sketch map of this utility model liquid nitrogen container and master console.
Fig. 2 is the structure principle chart of this utility model controller and the longitudinal sectional drawing of freezing head.
Fig. 3 is the cutaway view of the freezing head of this utility model along the A-A line.
Referring to figs. 1 through 3, liquid nitrogen container (1) and master console (2) are combined as a whole, and have liquid nitrogen carrier pipe (4), nitrogen carrier pipe (5) and the power line (6) made by plastic flexible pipe or silica gel tube to be connected with controller (3) on master console (2).Controller (3) mainly is made of liquid nitrogen valve (10), nitrogen separation device (16), nitrogen flow divider (15), electrothermal tube (11) and nitrogen valve (13).Nitrogen separation device (16) is welded by the metal inner pipe of 2.5 to 3.5 millimeters of the metal outer pipe of 3.5 to 4.5 millimeters of diameters and diameters, and 0.2 to 0.6 mm clearance is arranged between the inner and outer pipes.Outer tube is longer, is welded on the inner pipe wall at the end near liquid nitrogen carrier pipe (4) and liquid nitrogen valve (10), and the other end is connected by the interior capillary liquid nitrogen carrier pipe (23) of a liquid nitrogen carrier pipe joint (18) and freezing head (7).Outer tube has an opening at the sidewall near weld, connects nitrogen isocon (14).When the liquid nitrogen that is two-phase state and nitrogen mixture were flowed through nitrogen separation device (16), because the inertia of nitrogen is little, the major part gap between nitrogen separation device (16) inner and outer pipes of backflowing flowed into electrothermal tube (11) through nitrogen isocon (14) again.The tube wall of electrothermal tube (11) has the nitrogen adverse current preheating interlayer (17) that is made of the metal internal and external casing, this nitrogen adverse current preheating interlayer (17) is communicating with nitrogen isocon (14) and nitrogen carrier pipe (5) near freezing head (7) one ends, and the other end then feeds the heating (12) in the electrothermal tube (11).Heating (12) is the piped tungsten filament of coiled spiral shell, and the insulation of heat-resistant insulation material and tube wall is arranged on every side, and power is 10 to 30 watts, provides 6 to 18 volts of continuously adjustable alternating currents by master console (2) through power line (6).Freezing head (7) is made by three coaxial stainless steel tubes, and interior one be capillary liquid nitrogen carrier pipe (23), can separate from freezing head (7) and take out, and gets rid of or replacing so that can take out when plugging fault occurring; Middle tube is slightly short, forms exhaustor (22) between it and the capillary liquid nitrogen carrier pipe (23); Outer tube is longer, and top closure forms vaporizer (24), and quite freezing head treatment end (9) forms steam every cold chamber (21) between the remainder of outer tube and the exhaustor (22).Steam is located to communicate with exhaustor (22) at nearly freezing head treatment end (9) every cold chamber (21), steam is welded with a joint every cold chamber (21) in freezing head (7) and controller (3) junction, connect hot nitrogen carrier pipe (19), be connected with electrothermal tube (11).Freezing head (7) is connected with controller (3) by fixing sieve medicated cap (20).Freezing head (7) can be made various shape according to the needs of different therapentic parts.Liquid nitrogen valve (10) is housed on liquid nitrogen carrier pipe (4), nitrogen flow divider (15) is housed on nitrogen isocon (14), nitrogen valve (13) is housed on nitrogen carrier pipe (5).Each parts that constitute controller (3) closely combine, and its appearance cover is with metal canula, and the adjusting rod of each valve is exposed to telescopic surface, and this structure is convenient to operation, cleaning and the sterilization of controller (3).Can load onto thermocouple wire in the freezing head (7), can load onto timer on the controller, to monitor the variations in temperature and the treatment time of freezing head treatment end (9).Liquid nitrogen container (1) internal pressure should be adjusted in 0.5 to 1.5 kg/cm.This utility model also can with the supporting use of the automatic control device of auto-control cryogenic temperature and treatment procedure.

Claims (2)

1, one by liquid nitrogen container [1], master console [2], cold therapy device in the body that controller [3] and freezing head [7] are formed, it is characterized in that: the periphery of non-treatment part [8] capillary liquid nitrogen carrier pipe [23] of freezing head [7] and exhaustor [22] is provided with a steam every cold chamber [21], this steam is located to communicate with exhaustor [22] at nearly freezing head treatment end [9] every cold chamber [21], steam every the other end of cold chamber [21] electrothermal tube [11] by nitrogen adverse current preheating interlayer [17] is housed and nitrogen carrier pipe [5] and be positioned at liquid nitrogen carrier pipe [4] and capillary liquid nitrogen carrier pipe [23] between nitrogen separation device [16] be communicated with.
2, by cold therapy device in the described body of claim 1, it is characterized in that: nitrogen separation device (16) is welded by the metal inner pipe of 2.5 to 3.5 millimeters of the metal outer pipe of 3.5 to 4.5 millimeters of diameters and diameters, 0.2 to 0.6 mm clearance is arranged between the inner and outer pipes, outer tube is longer, be welded on the inner pipe wall at an end that is connected with liquid nitrogen carrier pipe (4), have an opening to be communicated with electrothermal tube (11) by nitrogen isocon (14) and nitrogen flow divider (15) at the outer tube wall of nearly weld.
CN 87204852 1987-03-22 1987-03-22 Intracorporal liquid nitrogen cryotherapy device Withdrawn CN87204852U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 87204852 CN87204852U (en) 1987-03-22 1987-03-22 Intracorporal liquid nitrogen cryotherapy device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 87204852 CN87204852U (en) 1987-03-22 1987-03-22 Intracorporal liquid nitrogen cryotherapy device

Publications (1)

Publication Number Publication Date
CN87204852U true CN87204852U (en) 1988-01-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 87204852 Withdrawn CN87204852U (en) 1987-03-22 1987-03-22 Intracorporal liquid nitrogen cryotherapy device

Country Status (1)

Country Link
CN (1) CN87204852U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102784004A (en) * 2012-02-23 2012-11-21 中国人民解放军第三军医大学第一附属医院 Liquid nitrogen minimally-invasive cold knife
CN102935010A (en) * 2012-11-21 2013-02-20 湖南爱芷生医疗科技有限公司 Deep hypothermia therapy apparatus for rectal cancer
CN105708541A (en) * 2016-04-11 2016-06-29 赵国江 Control method for throttling freezing type cryosurgery device
CN107157570A (en) * 2017-04-21 2017-09-15 重庆大学 Resistance-type liquid nitrogen minimally-invasive cold knife system
CN109620392A (en) * 2018-12-11 2019-04-16 海杰亚(北京)医疗器械有限公司 A kind of working medium distributing equipment and system for high/low temperature treatment
CN111084657A (en) * 2020-01-02 2020-05-01 重庆大学 Liquid nitrogen cooling sword cutter body temperature control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102784004A (en) * 2012-02-23 2012-11-21 中国人民解放军第三军医大学第一附属医院 Liquid nitrogen minimally-invasive cold knife
CN102935010A (en) * 2012-11-21 2013-02-20 湖南爱芷生医疗科技有限公司 Deep hypothermia therapy apparatus for rectal cancer
CN105708541A (en) * 2016-04-11 2016-06-29 赵国江 Control method for throttling freezing type cryosurgery device
CN107157570A (en) * 2017-04-21 2017-09-15 重庆大学 Resistance-type liquid nitrogen minimally-invasive cold knife system
CN109620392A (en) * 2018-12-11 2019-04-16 海杰亚(北京)医疗器械有限公司 A kind of working medium distributing equipment and system for high/low temperature treatment
CN109620392B (en) * 2018-12-11 2021-01-01 海杰亚(北京)医疗器械有限公司 Working medium distribution equipment and system for high-low temperature treatment
CN111084657A (en) * 2020-01-02 2020-05-01 重庆大学 Liquid nitrogen cooling sword cutter body temperature control system

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