CN216703809U - Gas purification device for laparoscopic surgery - Google Patents
Gas purification device for laparoscopic surgery Download PDFInfo
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- CN216703809U CN216703809U CN202122965289.9U CN202122965289U CN216703809U CN 216703809 U CN216703809 U CN 216703809U CN 202122965289 U CN202122965289 U CN 202122965289U CN 216703809 U CN216703809 U CN 216703809U
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- 238000000746 purification Methods 0.000 title claims abstract description 26
- 238000002357 laparoscopic surgery Methods 0.000 title claims abstract description 22
- 238000001179 sorption measurement Methods 0.000 claims abstract description 153
- 239000000463 material Substances 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000007787 solid Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 12
- 231100000419 toxicity Toxicity 0.000 abstract description 6
- 230000001988 toxicity Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 18
- 238000004891 communication Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 208000005646 Pneumoperitoneum Diseases 0.000 description 1
- 206010068956 Respiratory tract inflammation Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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Abstract
The utility model discloses a gas purification device for laparoscopic surgery, which is characterized in that: comprises a first adsorption cavity containing liquid adsorption material and a second adsorption cavity containing solid adsorption material; the first adsorption cavity is connected with an inlet pipe, the air inlet end of the inlet pipe is communicated with the laparoscope sheath, and the air outlet end of the inlet pipe extends into the position below the liquid level of the liquid adsorption material; a communicating pipe is arranged between the first adsorption cavity and the second adsorption cavity, the air inlet end of the communicating pipe extends into the first adsorption cavity and is positioned above the liquid level of the liquid adsorption material, the air outlet end of the communicating pipe is communicated with the air inlet of the second adsorption cavity, the second adsorption cavity is provided with an air outlet, and the solid adsorption material is arranged between the air inlet and the air outlet; the smoke generated in the laparoscopic surgery can ensure the purification effect of the smoke, reduce the toxicity and prevent medical staff and anesthetized patients from being injured through a secondary purification process.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a gas purification device for laparoscopic surgery.
Background
Laparoscopic surgery has a small post-operative scar and is aesthetically pleasing compared to traditional surgery, and minimally invasive surgery is a general trend and pursuit of surgical development. Generally, most of the general surgical operations, laparoscopic ones, can be performed.
While these procedures are being performed, laparoscopic surgical instruments (e.g., monopolar or bipolar coagulation, ultrasonic blades, Ligasure, laser, etc.) also produce toxic surgical fumes, which are air feathers, aerosols, and vapor mixtures. Mainly consisting of 95% water or steam and 5% cell debris in the form of particles, which can be seen or heard. The main harmful substances contained in the smoke are CO, acrylonitrile and virus particles carried in the smoke, and even carcinogenicity (such as toluene, benzene, xylene and the like). The operation smoke not only affects the visual field definition and the operation continuity of the operation, but also directly generates physical hazards of respiratory tract inflammation, lung stimulation, carcinogenic toxicity and the like to workers in an operating room by the discharged operation smoke, and forms an infection source taking air as a carrier to pollute the air in the operating room.
Chinese patent No. CN 206508035U discloses a smoke purifier for laparoscopic surgery, wherein a control valve is installed on a vent pipe at the upper part of a laparoscopic sheath clamp, the control valve is connected with one end of a hose, the other end of the hose is connected with an absorption bottle, a bottle cap is arranged at the top of the absorption bottle, a first communication pipe and a second communication pipe are arranged on the bottle cap, the lower end of the first communication pipe is positioned at the bottom inside the absorption bottle, the other end of the hose is connected with the upper end of the first communication pipe, a negative pressure device is connected with the upper end of the second communication pipe, the absorption bottle is filled with water, the water surface does not have the lower end of the first communication pipe, the control valve is opened by starting the negative pressure device, smoke generated in the surgery process is absorbed by the laparoscopic sheath clamp, and the smoke enters the water to be absorbed after passing through the hose, therefore, the smoke is absorbed into the absorption bottle by the negative pressure absorption mode to complete the absorption of the smoke, on one hand, the device is complex, on the other hand, the adsorption effect is limited, and the direct emptying has certain pollution.
Chinese patent No. CN 207307413U discloses a smoke purifier for laparoscopic surgery, the device includes an air inlet pipeline with adjustable flow, a liquid collector, a whistling, a smoke filtering and purifying system, and an air outlet pipeline, the air inlet pipeline is connected with a puncture outfit for abdominal cavity in surgery; the gas flows through the filter element and the activated carbon for filtering; the exhaust pipeline is connected with a central negative pressure device of the operating room; this scheme passes through negative pressure device adsorption gas and flows through active carbon filter equipment and filter, however, single active carbon's filtration mode can not reach fine filter effect, has certain contamination after direct evacuation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gas purification device for laparoscopic surgery, which aims to solve the problems in the prior art, smoke generated in the laparoscopic surgery is firstly adsorbed by a liquid adsorption material and then adsorbed by a solid adsorption material, so that a secondary purification process is realized, the purification effect on the smoke generated in the laparoscopic surgery can be ensured, the toxicity is reduced, and medical staff and anesthetized patients are prevented from being injured.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model provides a gas purification device for laparoscopic surgery, which comprises a first adsorption cavity containing a liquid adsorption material and a second adsorption cavity containing a solid adsorption material, wherein the first adsorption cavity is provided with a liquid adsorption material; the first adsorption cavity is connected with an inlet pipe, the air inlet end of the inlet pipe is communicated with the laparoscope sheath, and the air outlet end of the inlet pipe extends into the position below the liquid level of the liquid adsorption material; a communicating pipe is arranged between the first adsorption cavity and the second adsorption cavity, the air inlet end of the communicating pipe extends into the first adsorption cavity and is positioned above the liquid level of the liquid adsorption material, the air outlet end of the communicating pipe is communicated with the air inlet of the second adsorption cavity, the second adsorption cavity is provided with an air outlet, and the solid adsorption material is arranged between the air inlet and the air outlet.
Preferably, the air outlet end of the inlet pipe is close to the inner bottom surface of the first adsorption cavity.
Preferably, the communication pipe is of an inverted U-shaped structure.
Preferably, the communicating pipe adopts an anti-backflow pipe.
Preferably, the second adsorption cavity is attached to the first adsorption cavity and is of a double-layer structure or an inner-layer structure and an outer-layer structure.
Preferably, the cross section of the second adsorption cavity is of a U-shaped structure, and the air inlet and the air outlet are respectively arranged at the top ends of the two support arms of the U-shaped structure.
Preferably, the inlet pipe, the communicating pipe and the air outlet are respectively provided with a first valve, a second valve and a third valve.
Preferably, the air outlet is connected with an outlet pipe, and the third valve is arranged on the outlet pipe.
Preferably, the liquid adsorption material adopts normal saline, and the solid adsorption material adopts activated carbon.
Compared with the prior art, the utility model has the following technical effects:
(1) the smoke generated in the laparoscopic surgery is firstly adsorbed by the liquid adsorbing material and then adsorbed by the solid adsorbing material, so that a secondary purification process is realized, the purification effect on the smoke generated in the laparoscopic surgery can be ensured, the toxicity is reduced, and medical staff and anesthetized patients are prevented from being injured;
(2) the air outlet end of the inlet pipe is close to the inner bottom surface of the first adsorption cavity, so that smoke can escape from the bottom of the liquid adsorption material to the upper part after entering the first adsorption cavity, and the smoke can be purified by fully utilizing the liquid adsorption material;
(3) the communicating pipe is of an inverted U-shaped structure, so that gas communication between the first adsorption cavity and the second adsorption cavity can be realized, namely, gas or smoke can enter the second adsorption cavity from the first adsorption cavity through the U-shaped structure, and meanwhile, liquid adsorption materials can be prevented from overflowing to enter the second adsorption cavity; furthermore, the communicating pipe can also adopt an anti-backflow pipe, so that the influence of the liquid adsorption material entering the second adsorption cavity on the adsorption performance of the solid adsorption material can be further avoided;
(4) the second adsorption cavity is arranged to be attached to the first adsorption cavity and is of a double-layer structure or an inner-layer structure and an outer-layer structure, and the first adsorption cavity and the second adsorption cavity can be combined into a whole through the attaching connection structure, so that the size can be reduced, and the storage is convenient; the route of first adsorption chamber or second adsorption chamber can be prolonged to the mode of encircleing to, the adsorption route of liquid adsorbent material or solid-state adsorption material can be prolonged, further improvement adsorption effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
wherein, 1, a first adsorption cavity; 2. a second adsorption chamber; 3. an introducing pipe; 4. a communicating pipe; 5. A delivery pipe; 6. a first valve; 7. a second valve; 8. and a third valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide a gas purification device for laparoscopic surgery, which aims to solve the problems in the prior art, smoke generated in the laparoscopic surgery is firstly adsorbed by a liquid adsorption material and then adsorbed by a solid adsorption material, so that a secondary purification process is realized, the purification effect on the smoke generated in the laparoscopic surgery can be ensured, the toxicity is reduced, and medical staff and anesthetized patients are prevented from being injured.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the present invention provides a gas purification device for laparoscopic surgery, comprising a first adsorption chamber 1 containing a liquid adsorption material and a second adsorption chamber 2 containing a solid adsorption material, wherein the first adsorption chamber 1 and the second adsorption chamber 2 can be separately and independently arranged, for example, the two adsorption chambers can be in the form of a separate rectangular parallelepiped container or a separate cylindrical container, or can be integrally arranged, for example, a rectangular parallelepiped container or a separate cylindrical container is provided, and the inside of the first adsorption chamber and the second adsorption chamber is provided with a partition structure to divide the first adsorption chamber and the second adsorption chamber into two chambers; the liquid adsorption material can be sterilized water or normal saline, and the solid adsorption material can be zeolite, activated carbon, carbon molecular sieve, resin, etc. The first adsorption cavity 1 is connected with an introducing pipe 3, the air inlet end of the introducing pipe 3 is communicated with the laparoscope sheath, the air outlet end of the introducing pipe 3 extends below the liquid level of the liquid adsorption material, and smoke introduced by the laparoscope sheath can escape from the liquid level after being adsorbed by the liquid adsorption material. Be provided with communicating pipe 4 between first adsorption chamber 1 and the second adsorption chamber 2, communicating pipe 4 can be provided with one or many, can prevent that liquid adsorption material from getting into in the second adsorption chamber 2 when being gaseous by the leading-in second adsorption chamber 2 of first adsorption chamber 1, it is concrete, the inlet end of communicating pipe 4 stretches into in first adsorption chamber 1 and is located on liquid adsorption material's the liquid level, the end of giving vent to anger of communicating pipe 4 communicates the air inlet of second adsorption chamber 2, can get into the space above the liquid adsorption material liquid level after the flue gas that gets into liquid adsorption material escapes, will get into in second adsorption chamber 2 through communicating pipe 4 after reaching certain pressure. The second adsorption cavity 2 is provided with a gas outlet, and a solid adsorption material is arranged between the gas inlet and the gas outlet of the second adsorption cavity 2, namely, the flue gas enters the second adsorption cavity 2 and then flows out of the gas outlet after being adsorbed by the solid adsorption material. Because pneumoperitoneum can be established during laparoscopic surgery, the air pressure in the abdomen is higher than the outside, and smoke gas generated during the surgery can enter the purification device through the laparoscopic sheath.
The smog that produces during laparoscopic surgery is not very much, but has toxicity, is harmful to medical staff and anesthesia patient, through designing into the structure of water bag appearance, size and purification performance can satisfy the operation demand, of course, can adopt bulky purifier or in time change at the operation in-process according to specific operation condition.
The end of giving vent to anger of induction pipe 3 can be close to the interior bottom surface in first adsorption cavity 1, can make smog enter into in the first adsorption cavity 1 back by the bottom of liquid adsorption material to the upper portion escape, can make full use of liquid adsorption material purify smog.
Communicating pipe 4 can be for the type of falling U structure, can realize the gaseous intercommunication in first adsorption chamber 1 and second adsorption chamber 2, that is to say, gaseous or smog can pass through the type of U structure and get into second adsorption chamber 2 by first adsorption chamber 1, simultaneously, also can avoid liquid adsorption material overflow to enter into second adsorption chamber 2.
Communicating pipe 4 can adopt the form of preventing the backflow pipe, prevents that the backflow pipe can realize preventing the effect of liquid refluence, and is specific can refer to the urine bag of clinical usefulness through setting up check valve isotructure. Through adopting prevent that backflow pipe can be further avoid liquid adsorbing material to get into the second and adsorb the influence that causes the adsorption performance to solid adsorbing material in the chamber 2. In practical application, can directly place purifier on the operating table, prevent that the backflow pipe just can play a role this time, of course, can form the user state as shown in figure 1 best, keep the flue gas at first to get into second adsorption cavity 2 through liquid adsorption material again, more abundant that can purify, liquid adsorption material utilizes more abundant, can adopt the mode of hanging in midair or be provided with other bearing structure this moment and keep this state.
The second adsorption cavity 2 can be attached to the first adsorption cavity 1, a double-layer structure can be formed when the second adsorption cavity is attached to the side surface or the bottom surface, an inner-layer structure and an outer-layer structure, wherein the second adsorption cavity 2 surrounds the first adsorption cavity 1 or the first adsorption cavity 1 surrounds the second adsorption cavity 2, and the first adsorption cavity 1 and the second adsorption cavity 2 can be combined into a whole through the attached and connected structure, so that the size can be reduced, and the storage is convenient; the surrounding mode can prolong the path of the first adsorption cavity 1 or the second adsorption cavity 2, thereby prolonging the adsorption path of the liquid adsorption material or the solid adsorption material and further improving the adsorption effect.
Can design into U type structure with the cross-section of second adsorption cavity 2, at this moment, U type structure extends to the opposite side by one side in first adsorption cavity 1, and simultaneously, the air inlet and the gas outlet in second adsorption cavity 2 set up respectively on the top of two support arms of U type structure, can form longer second adsorption cavity 2 in solid-state adsorption material's adsorption route, improve adsorption effect.
The leading-in pipe 3, the communicating pipe 4 and the air outlet are respectively provided with a first valve 6, a second valve 7 and a third valve 8, the first valve 6 and the second valve 7 can adopt the simplest clip type structure or on-off control valves in other forms to realize on-off control of each pipeline, and when the clip type structure is adopted, the leading-in pipe 3 and the communicating pipe 4 adopt flexible pipes; the third valve 8 on the air outlet can be a sealing cover, a clamp and other structures, and the opening and closing of the air outlet are controlled.
The gas outlet position can also be connected with delivery pipe 5, and third valve 8 sets up on delivery pipe 5, and third valve 8 can adopt the same structure with first valve 6 and second valve 7. The delivery pipe 5 can be connected to a gas collecting device or directly evacuated according to requirements.
The liquid adsorbing material in the first adsorbing cavity 1 can adopt normal saline which is easy to obtain by frequently using materials in an operating room, and can be replaced according to the adsorbing condition of the normal saline after or during the operation; the solid adsorbing material in the second adsorbing cavity 2 can adopt activated carbon, the activated carbon is a common adsorbing material, the material is easy to obtain, the purifying capacity of the activated carbon is strong, and a small amount of activated carbon can play a good purifying effect; therefore, the purification device has the advantages of simple structure and low cost, and is beneficial to popularization and use.
The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (9)
1. A laparoscopic surgery gas purification device, its characterized in that: comprises a first adsorption cavity containing liquid adsorption material and a second adsorption cavity containing solid adsorption material; the first adsorption cavity is connected with an inlet pipe, the air inlet end of the inlet pipe is communicated with the laparoscope sheath, and the air outlet end of the inlet pipe extends into the position below the liquid level of the liquid adsorption material; a communicating pipe is arranged between the first adsorption cavity and the second adsorption cavity, the air inlet end of the communicating pipe extends into the first adsorption cavity and is positioned above the liquid level of the liquid adsorption material, the air outlet end of the communicating pipe is communicated with the air inlet of the second adsorption cavity, the second adsorption cavity is provided with an air outlet, and the solid adsorption material is arranged between the air inlet and the air outlet; the section of the second adsorption cavity is of a U-shaped structure.
2. The laparoscopic surgical gas purification device according to claim 1, wherein: the air outlet end of the inlet pipe is close to the inner bottom surface of the first adsorption cavity.
3. The laparoscopic surgical gas purification device according to claim 2, wherein: the communicating pipe is of an inverted U-shaped structure.
4. The laparoscopic surgical gas purification device of claim 3, wherein: the communicating pipe adopts an anti-backflow pipe.
5. The laparoscopic surgery gas purification apparatus according to any one of claims 1 to 4, wherein: the second adsorption cavity is attached to the first adsorption cavity and is of a double-layer structure or an inner-layer structure and an outer-layer structure.
6. The laparoscopic surgical gas purifying apparatus according to claim 5, wherein: the air inlet and the air outlet are respectively arranged at the top ends of the two support arms of the U-shaped structure.
7. The laparoscopic surgical gas purification device of claim 5, wherein: the inlet pipe, the communicating pipe and the air outlet are respectively provided with a first valve, a second valve and a third valve.
8. The laparoscopic surgical gas purging device of claim 7, wherein: the air outlet is connected with a delivery pipe, and the third valve is arranged on the delivery pipe.
9. The laparoscopic surgical gas purification device of claim 5, wherein: the liquid adsorption material adopts normal saline, and the solid adsorption material adopts activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122965289.9U CN216703809U (en) | 2021-11-29 | 2021-11-29 | Gas purification device for laparoscopic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122965289.9U CN216703809U (en) | 2021-11-29 | 2021-11-29 | Gas purification device for laparoscopic surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216703809U true CN216703809U (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122965289.9U Active CN216703809U (en) | 2021-11-29 | 2021-11-29 | Gas purification device for laparoscopic surgery |
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| Country | Link |
|---|---|
| CN (1) | CN216703809U (en) |
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- 2021-11-29 CN CN202122965289.9U patent/CN216703809U/en active Active
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Effective date of registration: 20240515 Address after: 300192 No. 24, rehabilitation Road, Tianjin, Nankai District Patentee after: TIANJIN FIRST CENTER Hospital Country or region after: China Address before: No.24 Fukang Road, Nankai District, Tianjin Patentee before: Liu Qian Country or region before: China |