CN107432974B - A kind of painless automatic anesthesia apparatus - Google Patents
A kind of painless automatic anesthesia apparatus Download PDFInfo
- Publication number
- CN107432974B CN107432974B CN201710569840.3A CN201710569840A CN107432974B CN 107432974 B CN107432974 B CN 107432974B CN 201710569840 A CN201710569840 A CN 201710569840A CN 107432974 B CN107432974 B CN 107432974B
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- Prior art keywords
- fixed
- conductive layer
- spring
- anesthesia
- bed body
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 206010002091 Anaesthesia Diseases 0.000 title claims abstract description 37
- 230000037005 anaesthesia Effects 0.000 title claims abstract description 37
- 239000004020 conductor Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000000693 micelle Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 1
- 229940079593 drug Drugs 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 4
- 230000036407 pain Effects 0.000 abstract description 4
- 239000003193 general anesthetic agent Substances 0.000 abstract description 3
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000003444 anaesthetic effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- OLBCVFGFOZPWHH-UHFFFAOYSA-N propofol Chemical compound CC(C)C1=CC=CC(C(C)C)=C1O OLBCVFGFOZPWHH-UHFFFAOYSA-N 0.000 description 4
- 229960004134 propofol Drugs 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000003340 mental effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 238000001949 anaesthesia Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000392 somatic effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/01—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes specially adapted for anaesthetising
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
Landscapes
- Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Pulmonology (AREA)
- Biomedical Technology (AREA)
- Emergency Medicine (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
The invention discloses a kind of painless automatic anesthesia apparatus, including bed body, bed body is fixed with respirator, and respirator is connected to mask by pipeline, and bed body is fixed with band one end, and the band other end is fixed just on the controller, and controller is fixed in bed body；The present invention is when patient body mobile range is excessive, band pulls rotary shaft high-speed rotation; rocker arm beats the second conductive layer because of centrifugal force; with the first conductive layer contact; power supply powers to electromagnet; absorption stopper moves down, and no longer blocks anesthesia chamber, the drug for anaesthetizing tank is inhaled by a patient through piping and mask is anaesthetized；It is anaesthetized using painless type suction-type, compare injecting anesthetic drug, mitigates patient's pain；When pipeline is torn in patient's violence leads to piping failure, due to the hydraulic oil seepage between outer tube and inner tube, the pressure reduction that piston is subject to, second spring forces piston is connected to left conductor block and right conductor block, power supply powers to buzzer, plays alarm function.
Description
Technical field
The present invention relates to medical appurtenance fields, and in particular to a kind of painless automatic anesthesia apparatus.
Background technique
Patient mental status it is unstable or need to carry out larger wound operation when anaesthetize, one side
Mitigate the pain of patient, on the other hand carries out operation nursing operation convenient for medical staff, but in actual operation, due to anesthesia
Dosage not necessarily achieves holonarcosis, it is therefore desirable to be monitored in real time according to the somatic reaction of patient and input is anaesthetized when needed
Drug.
A kind of automatic anesthesia apparatus is disclosed in the patent specification of Publication No. CN201847986U, is used for object
Input anesthetic is in vivo to realize anaesthesia process comprising: fix execution unit, for being injected into fiber crops into subject
Liquor-saturated dose, wherein the anesthetic is propofol；Control unit electrically connect with the fix execution unit, is used for
The injection speed and dosage of propofol are controlled using preset parameter according to external input；Input unit, with the control
Unit is electrically connected, for inputting anesthesia model selection and object weight by operator, and/or inputting anesthetic by it
Target level, and/or start or stop anesthetic input process；Wherein, described control unit is arranged to, for abortion's mould
Formula so that the target level C of propofol is substantially invariable value in maintenance stage blood, and makes the external infusion speed of propofol
Wherein for P=a0^Wt^C target, thorough be constant to degree, and Wt is the weight of object, and selects the target level C target for 2.17 μ
Value in g/ml-4.38 μ g/ml range.But this programme relies on electronic component integration system and realizes, it is not only at high cost, but also make
Patient can be generated with injecting anesthetic largely painful.
Summary of the invention
It is an object of the invention to overcome the above-mentioned problems in the prior art, a kind of painless automatic anesthesia dress is provided
It sets, can not only be administered according to patient body situation, while can also accomplish painless.
To realize above-mentioned technical purpose and the technique effect, the present invention is achieved through the following technical solutions:
A kind of painless automatic anesthesia apparatus, including bed body, the bed body are fixed with respirator, and the respirator passes through pipeline
It is connected to mask, the bed body is fixed with band one end, and the band other end is fixed on the controller, and the controller is fixed
In bed body；
The respirator is equipped with oxygen tank and anesthesia tank, and the oxygen tank and anesthesia tank are respectively communicated with the air chamber of control valve
With anesthesia chamber, the anesthesia chamber side wall opens up fluted, and irony stopper is provided in the groove, is additionally provided in the groove
For abutting the first spring of stopper, electromagnet is additionally provided in the groove, the air chamber and anesthesia chamber are connected to pipeline；
The pipeline is equipped with outer tube, and the outer tube and its internal inner tube form cavity, and the outer tube is equipped with
Be connected to the liquid-leakage alarm of cavity, it is I-shaped support frame that vertical section is equipped with inside the inner tube, outer tube and inner tube it
Between canned have hydraulic oil；
The liquid-leakage alarm is equipped with sleeve, and the sleeve is plugged with conductor piston, and abutting is additionally provided in the sleeve and is lived
The second spring of plug, side wall is embedded with left conductor block and right conductor block at the sleeve openings；
The controller is equipped with shell, and the inner walls are fixed with insulating layer, and the insulating layer inner wall is fixed with first
For first conductive layer described in conductive layer by glued second conductive layer of the equally distributed micelle of inner wall, the housing central section, which runs through, rotation
Shaft, the rotary shaft outer wall are hinged with rocker arm, and the rocker arm middle part is connected to rotating shaft surface, the rotation by third spring
Shaft is fixed to inner walls by wind spring, and the wind spring compressing rotary shaft winding band keeps tensioned state；
The left conductor block, right conductor block and power supply are connected with buzzer, first conductive layer, the second conductive layer with
And power supply is connected with electromagnet.
Further, first spring, second spring and third spring are equal diameter helical spring.
Further, the band is nylon material.
Further, first conductive layer is stainless steel material, and second conductive layer is aluminum.
Further, the rocker arm end is equipped with spherical hammer.
Further, the power supply is in series with protective resistance.
Income effect of the invention is:
1, when patient body mobile range is excessive, band pulls rotary shaft high-speed rotation, and rocker arm strikes because of centrifugal force
The second conductive layer is made a call to, with the first conductive layer contact, power supply powers to electromagnet, and absorption stopper moves down, and no longer blocks fiber crops
Liquor-saturated chamber, the drug for anaesthetizing tank is inhaled by a patient through piping and mask is anaesthetized.
2, it is anaesthetized using painless type suction-type, compare injecting anesthetic drug, mitigates patient's pain.
3, when pipeline is torn in patient's violence leads to piping failure, due to hydraulic between outer tube and inner tube
Oil seepage, the pressure reduction that piston is subject to, second spring forces piston are connected to left conductor block and right conductor block, and power supply is to buzzer
Power supply, plays alarm function.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of anesthesia outfit of the present invention；
Fig. 2 is the structural schematic diagram of respirator of the present invention；
Fig. 3 asks as the structural schematic diagram of pipeline of the present invention；
Fig. 4 is the structural schematic diagram of liquid-leakage alarm of the present invention；
Fig. 5 is the radial section schematic diagram of controller of the present invention；
Fig. 6 is the axial cross-sectional views of controller of the present invention；
Fig. 7 is electrical component connection schematic diagram of the present invention；
In attached drawing, parts list represented by the reference numerals are as follows:
100- bed body；
200- respirator, 201- oxygen hose, 202- anesthesia tank, 203- control valve, 204- air chamber, 205- anaesthetize chamber,
206- groove, 207- stopper, the first spring of 208-, 209- electromagnet；
300- pipeline, 301- outer tube, 302- inner tube, 303- cavity, 304- liquid-leakage alarm, 3041- sleeve,
3042- piston, 3043- second spring, the left conductor block of 3044-, the right conductor block of 3045-, 3046- buzzer, 305- support frame；
400- mask；
500- band；
600- controller, 601- shell, 602- insulating layer, the first conductive layer of 603-, 604- micelle, 605- second are conductive
Layer, 606- rotary shaft, 607- rocker arm, 6071- hammer, 608- third spring, 609- wind spring；
700- power supply, 701- protective resistance.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
As shown in figs. 1-7, the present invention is a kind of painless automatic anesthesia apparatus, including bed body 100, and bed body 100, which is fixed with, exhales
Haustorium 200, respirator 200 are connected to mask 400 by pipeline 300, and bed body 100 is fixed with 500 one end of band, and band 500 is another
One end is fixed on controller 600, and controller 600 is fixed in bed body 100；
Respirator 200 is equipped with oxygen tank 201 and anesthesia tank 202, and oxygen tank 201 and anesthesia tank 202 are respectively communicated with control valve
203 air chamber 204 and anesthesia chamber 205, anesthesia 205 side wall of chamber open up fluted 206, irony blocking are provided in groove 206
Block 207 is additionally provided with the first spring 208 for abutting stopper 207 in groove 206, is additionally provided with electromagnet 209, air in groove 206
Chamber 204 and anesthesia chamber 205 are connected to pipeline 300；
Pipeline 300 is equipped with outer tube 301, and outer tube 301 and its internal inner tube 302 form cavity 303, outer tube
301 are equipped with the liquid-leakage alarm 304 of connection cavity 303, and it is I-shaped support frame 305 that vertical section is equipped with inside inner tube 302；
Liquid-leakage alarm 304 is equipped with sleeve 3041, and sleeve 3041 is plugged with conductor piston 3042, is additionally provided in sleeve 3041
For abutting the second spring 3043 of piston 3042,3041 opening side wall of sleeve is embedded with left conductor block 3044 and right conductor block
3045；
Controller 600 is equipped with shell 601, and 601 inner wall of shell is fixed with insulating layer 602, and 602 inner wall of insulating layer is fixed with the
One conductive layer, 603 first conductive layer 603 is by glued second conductive layer 605 of the equally distributed micelle of inner wall 604, in shell 601
Through there is rotary shaft 606,606 outer wall of rotary shaft is hinged with rocker arm 607, is connected in the middle part of rocker arm 607 by third spring 608 in portion
606 surface of rotary shaft, rotary shaft 606 are fixed to 601 inner wall of shell by wind spring 609, and wind spring 609 is oppressed rotary shaft 606 and wound
Band 500 keeps tensioned state；
Left conductor block 3044, right conductor block 3045 and power supply 700 are connected with buzzer 3046, the first conductive layer 603,
Two conductive layers 605 and power supply 700 are connected with electromagnet 209.
Wherein, the first spring 208, second spring 3043 and third spring 608 are equal diameter helical spring.
Wherein, band 500 is nylon material.
Wherein, the first conductive layer 603 is stainless steel material, and the second conductive layer 605 is aluminum.
Wherein, 607 end of rocker arm is equipped with spherical hammer 6071.
Wherein, power supply 700 is in series with protective resistance 701.
One concrete application of the present embodiment are as follows:
When patient body mobile range is excessive, band 500 pull 606 high-speed rotation of rotary shaft, rocker arm 607 because from
Mental and physical efforts beat the second conductive layer 605, contact with the first conductive layer 603, and power supply 700 powers to electromagnet 209, adsorb stopper
207 move down, no longer block anesthesia chamber 205, anaesthetize tank 202 drug through piping 300 and mask 400 be inhaled by a patient into
Row anesthesia.
It is anaesthetized using painless type suction-type, compare injecting anesthetic drug, mitigates patient's pain.
When pipeline 300 is torn in patient's violence causes pipeline 300 damaged, due to outer tube 301 and inner tube 302
Between hydraulic oil seepage, the pressure reduction that piston 3042 is subject to, 3043 forces piston 3042 of second spring is connected to left conductor block
3044 and right conductor block 3045, power supply 700 powers to buzzer, plays alarm function.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Specific features described in conjunction with this embodiment or example, structure, material live feature and are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (6)
1. a kind of painless automatic anesthesia apparatus, it is characterised in that: including bed body (100), the bed body (100) is fixed with respirator
(200), the respirator (200) is connected to mask (400) by pipeline (300), and the bed body (100) is fixed with band
(500) one end, band (500) other end are fixed on controller (600), and the controller (600) is fixed on bed body
(100) on；
The respirator (200) is equipped with oxygen tank (201) and anesthesia tank (202), the oxygen tank (201) and anesthesia tank (202)
It is respectively communicated with air chamber (204) and anesthesia chamber (205) of control valve (203), anesthesia chamber (205) side wall opens up fluted
(206), it is provided with irony stopper (207) in the groove (206), is additionally provided with abutting stopper in the groove (206)
(207) the first spring (208), the groove (206) is interior to be additionally provided with electromagnet (209), the air chamber (204) and anesthesia chamber
(205) pipeline (300) are connected to；
The pipeline (300) is equipped with outer tube (301), and the outer tube (301) and its internal inner tube (302) form cavity
(303), the outer tube (301) is equipped with the liquid-leakage alarm (304) of connection cavity (303), sets inside the inner tube (302)
Having vertical section is I-shaped support frame (305)；
The liquid-leakage alarm (304) is equipped with sleeve (3041), and the sleeve (3041) is plugged with conductor piston (3042), described
The second spring (3043) for abutting piston (3042), sleeve (3041) the opening side wall are additionally provided in sleeve (3041)
It is embedded with left conductor block (3044) and right conductor block (3045)；
The controller (600) is equipped with shell (601), and shell (601) inner wall is fixed with insulating layer (602), the insulation
Layer (602) inner wall is fixed with the first conductive layer (603) first conductive layer (603) and passes through the equally distributed micelle of inner wall
(604) glued second conductive layer (605), shell (601) middle part is through having rotary shaft (606), and the rotary shaft (606) is outside
Wall is hinged with rocker arm (607), is connected to rotary shaft (606) surface, institute by third spring (608) in the middle part of the rocker arm (607)
It states rotary shaft (606) and is fixed to shell (601) inner wall by wind spring (609), wind spring (609) compressing rotary shaft (606) twines
Tensioned state is kept around band (500)；
The left conductor block (3044), right conductor block (3045) and power supply (700) are connected with buzzer (3046), and described first
Conductive layer (603), the second conductive layer (605) and power supply (700) are connected with electromagnet (209).
2. a kind of painless automatic anesthesia apparatus according to claim 1, it is characterised in that: first spring (208),
Two springs (3043) and third spring (608) are equal diameter helical spring.
3. a kind of painless automatic anesthesia apparatus according to claim 1, it is characterised in that: the band (500) is nylon
Material.
4. a kind of painless automatic anesthesia apparatus according to claim 1, it is characterised in that: first conductive layer (603)
For stainless steel material, second conductive layer (605) is aluminum.
5. a kind of painless automatic anesthesia apparatus according to claim 1, it is characterised in that: rocker arm (607) end is set
There are spherical hammer (6071).
6. a kind of painless automatic anesthesia apparatus according to claim 1, it is characterised in that: the power supply (700) is in series with
Protective resistance (701).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569840.3A CN107432974B (en) | 2017-07-13 | 2017-07-13 | A kind of painless automatic anesthesia apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569840.3A CN107432974B (en) | 2017-07-13 | 2017-07-13 | A kind of painless automatic anesthesia apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107432974A CN107432974A (en) | 2017-12-05 |
| CN107432974B true CN107432974B (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710569840.3A Expired - Fee Related CN107432974B (en) | 2017-07-13 | 2017-07-13 | A kind of painless automatic anesthesia apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN107432974B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110251239B (en) * | 2019-05-07 | 2020-04-28 | 中国人民解放军陆军军医大学第一附属医院 | Tourniquet storage box |
| CN110623643B (en) * | 2019-09-29 | 2021-06-04 | 吉林大学 | Anesthesia degree of depth and cerebral blood oxygen saturation monitoring devices |
| CN112618892B (en) * | 2020-12-24 | 2021-09-28 | 吉林大学 | Special anesthetic gas inhalation-preventing device for operating room anesthesiologist |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6746474B2 (en) * | 2002-05-31 | 2004-06-08 | Vahid Saadat | Apparatus and methods for cooling a region within the body |
| CN205626235U (en) * | 2016-04-01 | 2016-10-12 | 重庆市肿瘤研究所 | About band structure with automatic alarm function |
| CN206045085U (en) * | 2016-07-05 | 2017-03-29 | 兰州大学第一医院 | A kind of Quick anaesthesia device |
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| CN107432974A (en) | 2017-12-05 |
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Granted publication date: 20190903 |