CN221888297U - Pneumoperitoneum balance dirty air catcher for laparoscopic puncture - Google Patents

Abstract

The utility model provides a laparoscope puncture pneumoperitoneum balance dirty gas catcher, which belongs to the technical field of surgical instruments, and structurally comprises a laparoscope puncture outfit, wherein an exhaust gas outlet connecting pipe of an exhaust cavity of a main body part of the laparoscope puncture outfit is provided with an exhaust gas switch valve, and an abduction end of the exhaust gas outlet connecting pipe is connected with an exhaust gas conduit; the tail end of the waste gas conduit is communicated with a negative pressure regulating filter; the negative pressure regulating filter consists of an upper shell and a lower shell, and an inner cavity of the negative pressure regulating filter is provided with a high-efficiency air filter element, an adsorbent bearing pipe and a negative pressure regulating valve; the tube cavity of the adsorbent bearing tube is filled with adsorbent filler; the bottom end air outlet connecting pipe of the lower shell of the negative pressure regulating filter is connected with a negative pressure buffer tube; the end of the negative pressure buffer tube is connected to a negative pressure buffer tank, and the negative pressure buffer tank is connected with a negative pressure generator through a negative pressure tube. The utility model is used for establishing a negative pressure capturing system for exhausting the laparoscope puncture outfit, and is used for pneumoperitoneum adjustment, filtering and adsorbing exhaust and dirty gas and negative pressure suction.

Description

Laparoscopic pneumoperitoneum balanced dirty gas trap

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a laparoscopic puncture pneumoperitoneum balanced dirty air collector.

Background Art

Generally, pollutants during abdominal surgery mainly include surgical waste gas from pneumoperitoneum, surgical waste fluid, pathological tissue, and surgical smoke generated during electroresection or electrocoagulation. Surgical smoke causes unclear laparoscopic surgical field, affects the surgical process, prolongs the operation time, and increases the amount of bleeding. Especially during major surgery, there is a lot of smoke during electrocoagulation and electroresection, which not only makes the surgical field unclear, increases the number of mirror wiping times, but also easily leads to pneumoperitoneum imbalance. The overflow of smoke will also cause air pollution in the operating room, and even the air is filled with a serious "barbecue smell" and floating cell debris.

Smoke aerosols are inhalable particles that cannot be blocked by medical surgical masks. There are active cells, active viruses, bacteria and other microorganisms in the smoke, which endanger the health of doctors and patients. Medical staff in the operating room are in the environment of surgical aerosols for a long time, which will cause dizziness, headaches, nausea, fatigue and other discomforts. Surgical aerosols are also infectious with active bacteria: they can easily cause chronic pharyngitis, keratitis, etc.; active viruses are also mutagenic; polycyclic aromatic hydrocarbons in smoke are a kind of carcinogenic and teratogenic substance; these factors all have health risks.

At the end of the operation, the _CO2 in the abdomen cannot be discharged in time, and common complications of _CO2 pneumoperitoneum (patients experience abdominal distension, low back and shoulder pain, nausea and vomiting, increased heart rate, and other discomforts after surgery).

Surgical smoke and pneumoperitoneum _CO2 diffuse in the form of aerosols. Surgical smoke makes the surgical field unclear for doctors, and the diffused and discharged surgical smoke can easily be directly inhaled by doctors. For patients, surgical smoke accumulates in the body and causes _CO2 pneumoperitoneum complications. Surgical smoke causes air pollution and aerosol poisoning to the environment inside the operating room.

At present, the exhaust method of surgical smoke is to discharge it directly into the air of the operating room. There are great defects and hidden dangers in the direct exhaust of surgical smoke. Direct exhaust means unscrewing the exhaust hole of the abdominal puncture device to allow the surgical smoke to slowly emerge and be discharged directly into the operating room, where it is directly inhaled into the respiratory tract by the operating staff, causing occupational exposure. The smoke in the operating room floats and permeates the entire space, producing a distinct "barbecue smell". Surgical smoke is extremely harmful to the health of doctors and patients during the operation period. In particular, the surgical smoke of specific viral patients contains a large amount of active viruses and living cell debris, which are contagious. The direct exhaust method of smoke pollutes the air in the operating room and increases the possibility of cross infection; the operating room staff and anesthesiologists inhale the toxic hazards of surgical aerosols for a long time. In addition, after the operation is completed, the contaminated operating room needs to be cleaned and purified: the purification needs to be closed for more than 1.5 hours under the operation of the fresh air laminar flow system, and wet cleaning is mainly used, and the number of disinfections of indoor surfaces and floors must be guaranteed to be more than the total number of surgeries, which brings a great burden to medical work.

The existing technology also has homemade surgical waste gas collection devices before surgery, which prolongs the preoperative preparation time, results in too small an operating space, and affects the normal progress of the operation. The installation, operation, and disinfection of the homemade device are relatively cumbersome, which brings a workload before and after the operation.

Summary of the invention

The technical task of the utility model is to solve the deficiencies of the prior art and provide a laparoscopic puncture pneumoperitoneum balanced dirty gas collector.

The technical solution of the utility model is implemented in the following manner: the laparoscopic puncture pneumoperitoneum balance dirty gas collector of the utility model comprises a laparoscopic puncture device, one side of the exhaust cavity of the main body of the laparoscopic puncture device is fixedly connected with an exhaust gas external exhaust pipe leading to the outside, an exhaust switch valve is arranged on the exhaust gas external exhaust pipe, and the outer end of the exhaust gas external exhaust pipe is connected with an exhaust gas conduit;

The end of the exhaust gas conduit is connected to a negative pressure regulating filter;

The negative pressure regulating filter is composed of an upper shell and a lower shell, which are connected by a card slot sealing buckle, and the card slot has a rotational freedom;

The top end of the upper shell is fixedly connected to a top air inlet pipe, and the bottom end of the lower shell is fixedly connected to a bottom air outlet pipe;

The end of the exhaust gas conduit is connected to the top air intake pipe of the upper shell of the negative pressure regulating filter;

The inner cavity of the negative pressure regulating filter is provided with a high efficiency air filter element, an adsorbent carrying tube and a negative pressure regulating valve;

The high-efficiency air filter element is arranged in the upstream air intake section of the inner cavity of the upper shell; the upstream end surface of the high-efficiency air filter element covers and intercepts the inner pipe opening of the top air intake pipe; the outer periphery of the high-efficiency air filter element is sealed with the inner wall of the upper shell;

The adsorbent carrying tube is arranged in the inner cavity formed by the upper shell and the lower shell, and the tube wall of the adsorbent carrying tube is provided with evenly distributed air permeable sieve holes.

The upstream top end of the adsorbent carrying tube is set as an open tube opening, and the top edge of the open tube opening is sealed and pressed against the bottom surface of the high-efficiency air filter element;

The downstream bottom end of the adsorbent carrying tube is set as a blind end, and the blind end extends to the bottom end of the lower shell;

The lumen of the adsorbent carrying tube is filled with an adsorbent filler;

A negative pressure regulating valve is provided in the space between the blind end of the adsorbent carrying tube and the gas outlet pipe at the bottom end of the lower shell;

The bottom air outlet pipe of the lower shell of the negative pressure regulating filter is connected to the negative pressure buffer pipe;

The end of the negative pressure buffer tube is connected to the negative pressure buffer tank, and the negative pressure buffer tank is connected to the negative pressure generator through the negative pressure tube.

Further:

The interlayer structure of the high-efficiency air filter element at least includes a primary activated carbon melt-blown cloth composite layer, a high-efficiency air filter filler filter element layer, and a final activated carbon melt-blown cloth composite layer;

The high-efficiency air filter filler filter element layer is arranged between the primary activated carbon melt-blown cloth composite layer and the final activated carbon melt-blown cloth composite layer, and the three constitute an overall high-efficiency air filter element;

The high efficiency air filter filler filter element layer adopts glass fiber filter element filler or chemical fiber filter element filler.

Further:

The high efficiency air filter filler filter element layer adopts polytetrafluoroethylene fiber filler, and the high efficiency air filter filler filter element layer is also filled with _CO2 adsorbent.

Further:

A primary filter for intercepting and filtering the gas path is connected in series on the pipeline of the exhaust gas conduit;

The primary filter of the gas path is provided with an upper cone cover and a lower cone cover which are sealed and buckled with each other, a primary filter screen is crimped between the upper cone cover and the lower cone cover, the space between the inner periphery of the upper cone cover and the primary filter screen constitutes an upper expansion cavity, and the space between the primary filter screen and the inner periphery of the lower cone cover constitutes a lower contraction cavity;

The upper cone cover and the lower cone cover are connected in series to the pipeline of the exhaust gas conduit through the cone top pipe of the upper cone cover and the cone bottom pipe of the lower cone cover respectively;

The upper cone cover cone top pipe, the upper expansion chamber, the primary filter screen, the lower contraction chamber, and the lower cone cover cone bottom pipe sequentially constitute the primary filter channel of the exhaust gas duct;

The primary filter screen uses a disc-shaped intercepting fiber membrane.

Further:

The negative pressure regulating valve adopts a disc-shaped valve plate, on the disc surface of the valve plate, at least one valve hole with a gradually changing width is opened along the arc line inside the surface, and the position of the valve hole corresponds to the bottom end of the lower shell The outlet pipe port;

The circumferential edge of the valve plate is fixedly connected to the upper shell body through a connecting piece, and when the upper shell body and the lower shell body rotate relatively, the valve plate and the upper shell body are kept rotating synchronously.

Further:

A Y-type tee is connected in series on the pipeline of the negative pressure buffer pipe downstream of the negative pressure regulating filter;

The negative pressure buffer pipe goes down along the one-way passage of the Y-shaped tee to the negative pressure buffer tank;

The other bypass passage of the Y-type three-way is connected to the negative pressure suction tube through a catheter.

Further:

A Y-type tee is connected in series on the exhaust gas conduit upstream of the negative pressure regulating filter;

The exhaust gas conduit goes down along the Y-shaped tee to the negative pressure regulating filter;

The other bypass passage of the Y-type three-way is connected to the negative pressure suction tube through a catheter.

Further: the negative pressure suction tube adopts Yankee rod.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model discloses a laparoscopic puncture pneumoperitoneum balanced dirty gas collector, which establishes a negative pressure capture system for exhausting the laparoscopic puncture device and is used for pneumoperitoneum regulation, filtering and adsorption of exhaust dirty gas, and negative pressure suction.

The utility model is an integrated exhaust device for a laparoscope system, which improves a traditional smoke direct exhaust method into a closed constant pressure filtering method, and adopts a closed constant negative pressure filtering method to collect, filter and adsorb exhaust gas.

The negative pressure regulating filter adjusts the strength of negative pressure, plays a pneumoperitoneum balance function for the established pneumoperitoneum during laparoscopic surgery, and adjusts the size of negative pressure suction; after the pneumoperitoneum is established during surgery, the _CO2 inlet gas path maintains the _CO2 positive pressure environment of the surgical field cavity in the pneumoperitoneum, and the exhaust gas path is connected to the exhaust gas path of the exhaust gas external exhaust pipe of the laparoscope puncture card to discharge _CO2 and surgical smoke. On the one hand, it ensures that pure _CO2 gas enters the pneumoperitoneum surgical field cavity, and at the same time, the stale _CO2 gas mixed with electrocoagulation surgical smoke is discharged from the pneumoperitoneum surgical field cavity through the negative pressure system. In this way, the pneumoperitoneum surgical space is effectively maintained, the clarity of the surgical field is maintained, and the laparoscope lens is prevented from adhering to surgical smoke and dirt, thereby reducing the number of lens wiping times and keeping the surgical field open. It effectively ensures the normal progress of the operation and avoids abnormal influencing factors.

Filtering function: High-efficiency air filter element, effective filtration rate 99.9%, away from the toxicity of electrocoagulation surgery smoke aerosol.

Negative pressure suction function: quickly exhaust air to prevent mirror fogging; and can also solve _CO2 pneumoperitoneum complications.

The establishment of the negative pressure capture system enables constant pressure filtration and absorption of gas and vapor pollutants during laparoscopic surgery, which can quickly restore the laparoscopic surgical field, reduce the number of times medical staff need to wipe the mirror, and reduce the duration of the operation, which is conducive to shortening the surgical process, reducing the amount of surgical bleeding, and reducing the health damage of smoke toxins to patients and medical staff. The gas pollutants in the patient's abdomen are discharged in time and effectively filtered to avoid postoperative _CO2 pneumoperitoneum complications. At the same time, it can also reduce complications such as postoperative dizziness, nausea, and low hemoglobin caused by the absorption of smoke toxins in the abdominal cavity.

The application of the utility model in the operating room keeps the air in the operating room clean and pollution-free, reduces the risk of cross infection, and is also beneficial to the health protection of doctors and patients themselves, and keeps them away from the toxic hazards of surgical aerosols, thereby eliminating the pollution of the air in the operating room.

The utility model can effectively filter and purify surgical smoke aerosol, prevent smoke from polluting the air in the operating room, maintain the cleanliness of the air in the operating room, and is beneficial to the patient's awakening and recovery after surgery.

The utility model has the advantages of continuous suction of smoke and free switching of the pneumoperitoneum regulator to adjust the negative pressure. The main advantages are that it does not occupy the surgical channel and exhausts the gas more thoroughly. After assembly, no special operation is required, which is simple and easy.

The utility model avoids the insertion and removal of the suction tube in the laparoscope puncture channel, thereby reducing the probability of tumor implantation and the risk of transmission of infectious diseases and the like to specific patients.

It can be expanded with a Y-type three-way connector and can also be connected to a common Yankee rod suction head for liquid aspiration.

In the case of not using an adsorbent filler, an adsorbent carrier tube with a gas-permeable mesh can collect tissue debris, blood clots, etc. to prevent tube blockage. Maintain negative pressure suction as usual.

The utility model of the laparoscopic puncture pneumoperitoneum balanced dirty gas collector ensures the safety of intraoperative operation and is the first line of defense for effectively removing surgical smoke. It has a reasonable design, simple structure, safety and reliability, is easy to use and maintain, is suitable for a variety of surgical environments, and has good promotion and use value.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic structural diagram of the first embodiment of the present utility model;

Figure 2 is a schematic structural diagram of the second embodiment of the present utility model;

Figure 3 is a schematic diagram of the structure of the third embodiment of the present utility model;

Figure 4 is a schematic diagram of the structure of the high efficiency air filter element of the utility model;

Figure 5 is a schematic diagram of the structure of the valve plate of the utility model;

Figure 6 is a schematic diagram of the structure of the negative pressure regulating filter of the utility model with activated carbon filter cotton configured;

Figure 7 is a schematic diagram of the structure of the activated carbon filter cotton of the present invention.

The symbols in the accompanying drawings represent:

1. Laparoscopic puncture device, 2. Exhaust gas exhaust pipe, 3. Exhaust switch valve, 4. Exhaust gas duct,

5. Gas line primary filter,

6. Upper cone cover, 7. Lower cone cover, 8. Primary filter screen, 9. Upper expansion chamber, 10. Lower contraction chamber, 11. Cone top pipe of upper cone cover, 12. Cone bottom pipe of lower cone cover, 13. Primary filter channel,

14. Negative pressure regulating filter,

15. Upper shell, 16. Lower shell, 17. Card slot,

18. Top air inlet pipe, 19. Bottom air outlet pipe,

20. High efficiency air filter element, 21. Adsorbent carrier tube, 22. Negative pressure regulating valve,

23. The upstream air intake section of the upper shell cavity,

24. Air permeable mesh, 25. Open pipe opening, 26. Blind end, 27. Adsorbent filler,

28. Valve plate, 29. Valve hole, 30. Connecting piece,

31. Negative pressure buffer tube, 32. Negative pressure buffer tank, 33. Negative pressure tube, 34. Negative pressure generator, 35. Y-type tee,

36. Catheter, 37. Negative pressure suction tube,

38. Primary activated carbon melt-blown cloth composite layer, 39. High-efficiency air filter filler filter element layer, 40. Final activated carbon melt-blown cloth composite layer,

41. Polytetrafluoroethylene fiber packing,

42. Disc-shaped intercepting fiber diaphragm,

43. Activated carbon filter cotton.

DETAILED DESCRIPTION

The following is a detailed description of the laparoscopic puncture pneumoperitoneum balance dirty air collector of the utility model in conjunction with the accompanying drawings.

Embodiment 1:

As shown in FIG1 , the utility model of the laparoscopic puncture pneumoperitoneum balance dirty gas collector comprises a laparoscopic puncture device 1, one side of the exhaust cavity of the main body of the laparoscopic puncture device 1 is fixedly connected with an exhaust gas external exhaust pipe 2 leading to the outside, an exhaust switch valve 3 is arranged on the exhaust gas external exhaust pipe 2, and an exhaust gas conduit 4 is connected to the outer end of the exhaust gas external exhaust pipe 2;

The end of the exhaust gas conduit 4 is connected to the negative pressure regulating filter 14;

The negative pressure regulating filter 14 is composed of an upper shell 15 and a lower shell 16, which are connected by a sealing buckle slot 17. The sealing buckle slot 17 has a rotational freedom of 360 degrees.

The top end of the upper shell 15 is fixedly connected to a top air inlet pipe 18, and the bottom end of the lower shell 16 is fixedly connected to a bottom air outlet pipe 19;

The end of the exhaust gas conduit 4 is connected to the top air intake pipe 18 of the negative pressure regulating filter upper housing 15;

The inner cavity of the negative pressure regulating filter 14 is provided with a high efficiency air filter element 20, an adsorbent carrying tube 21 and a negative pressure regulating valve 22;

The high-efficiency air filter element 20 is arranged in the upstream air intake section 23 of the inner cavity of the upper shell; the upstream end surface of the high-efficiency air filter element 20 covers and intercepts the inner pipe opening of the top air intake pipe 18; the outer periphery of the high-efficiency air filter element 20 is sealed with the inner wall of the upper shell;

The adsorbent carrying tube 21 is disposed in the inner cavity formed by the upper shell 15 and the lower shell 16. The wall of the adsorbent carrying tube 21 is provided with evenly distributed air permeable sieve holes 24.

The upstream top end of the adsorbent carrying tube 21 is set as an open tube opening 25, and the top edge of the open tube opening 25 is sealed and pressed against the bottom surface of the high-efficiency air filter element 20;

The downstream bottom end of the adsorbent carrying tube 21 is set as a blind end 26, and the blind end extends to the bottom end of the lower shell;

The tube cavity of the adsorbent carrying tube 21 is filled with an adsorbent filler 27; the adsorbent filler 27 is a CO ₂ adsorbent, such as granules or powder of lime or soda lime, especially medical lime, for adsorbing a large amount of CO ₂ .

A negative pressure regulating valve 22 is provided in the space between the blind end of the adsorbent carrying tube 21 and the gas outlet pipe at the bottom end of the lower shell; the negative pressure regulating valve 22 abuts against the inner pipe opening of the gas outlet pipe 19 at the bottom end;

The bottom air outlet pipe 19 of the negative pressure regulating filter lower shell is connected to the negative pressure buffer pipe 31;

The end of the negative pressure buffer tube 31 is connected to the negative pressure buffer tank 32 , and the negative pressure buffer tank 32 is connected to the negative pressure generator 34 through the negative pressure tube 33 .

Further expansion of the design for Example 1:

The interlayer structure of the high-efficiency air filter element 20 at least includes a primary activated carbon melt-blown cloth composite layer 38, a high-efficiency air filter filler filter element layer 39, and a final activated carbon melt-blown cloth composite layer 40;

The high-efficiency air filter filler filter element layer 39 is arranged between the primary activated carbon melt-blown cloth composite layer 38 and the final activated carbon melt-blown cloth composite layer 40, and the three constitute the overall high-efficiency air filter element 20;

The high-efficiency air filter filler filter element layer 39 adopts glass fiber filter element filler or chemical fiber filter element filler, which mainly plays the role of high-efficiency filtration.

The high efficiency air filter filler filter element layer preferably uses polytetrafluoroethylene fiber filler 41.

Further expansion of the above embodiment:

The exhaust gas conduit 4 is connected in series with a primary filter 5 for interception and filtration;

The gas path primary filter 5 is provided with an upper cone cover 6 and a lower cone cover 7 which are sealed and buckled with each other, a primary filter screen 8 is crimped between the upper cone cover 6 and the lower cone cover 7, the space between the inner periphery of the upper cone cover and the primary filter screen forms an upper expansion cavity 9, and the space between the primary filter screen and the inner periphery of the lower cone cover forms a lower contraction cavity 10;

The upper cone cover and the lower cone cover are connected in series to the pipeline of the exhaust gas conduit 4 through the upper cone cover cone top pipe 11 and the lower cone cover cone bottom pipe 12 respectively;

The upper cone cover cone top pipe 11, the upper expansion chamber 9, the primary filter screen 8, the lower contraction chamber 10, and the lower cone cover cone bottom pipe 12 sequentially form a primary filter channel 13 of the exhaust gas duct;

The primary filter screen 8 adopts a disc-shaped intercepting fiber membrane 42 .

Further expansion of the above embodiment:

The negative pressure regulating valve 22 adopts a disc-shaped valve plate 28. On the disc surface of the valve plate, at least one valve hole 29 with a gradually changing width is opened along the arc line inside the surface. The position of the valve hole corresponds to the inner pipe opening of the bottom end air outlet pipe 19 of the lower shell.

The circumferential edge of the valve plate 28 is fixedly connected to the upper housing through a connecting piece 30, so that when the upper housing and the lower housing rotate relative to each other, the valve plate 28 and the upper housing 15 are kept rotating synchronously.

Embodiment 2:

As shown in Figure 2, the laparoscopic puncture pneumoperitoneum balance dirty gas collector of the utility model is based on the first embodiment and its extended design, and a Y-type tee 35 is connected in series on the pipeline of the negative pressure buffer tube 31 downstream of the negative pressure regulating filter; the negative pressure buffer tube 31 goes down along one path of the Y-type tee 35 to the negative pressure buffer tank 32; the other bypass path of the Y-type tee is connected to the negative pressure suction tube 37 through the catheter 36. The negative pressure suction tube can suck gas or liquid.

A Yankee rod can be used as a negative pressure suction tube.

Embodiment three:

As shown in Figure 3, the laparoscopic puncture pneumoperitoneum balance waste gas collector of the utility model is based on the first embodiment and its extended design, and a Y-type tee 35 is connected in series on the pipeline of the waste gas duct 4 upstream of the negative pressure regulating filter; the waste gas duct 4 goes down along one path of the Y-type tee to the negative pressure regulating filter 14; the other bypass path of the Y-type tee is connected to the negative pressure suction tube 37 through the catheter 36.

The negative pressure suction tube can suck gas or liquid. It can also be replaced with an adsorbent-bearing tube without adsorbent filler in advance. The configuration is selected according to the use environment.

A Yankee rod can be used as a negative pressure suction tube.

The laparoscopic puncture device of the utility model adopts a laparoscopic puncture card trocar, has a reliable airtight protective cover to prevent gas leakage, ensures the stability of pneumoperitoneum pressure, is easy to operate, has perfect functions, is non-toxic and sterile.

The utility model can establish a vapor mist suction pipeline + pneumoperitoneum balance system; can establish a pneumoperitoneum regulator + filter + negative pressure suction system.

The high-efficiency air filter element of the utility model adopts ultra-fine glass fiber and chemical fiber as filter element, especially polytetrafluoroethylene fiber (PTFE), which can achieve the effect of low resistance, high negative pressure flux and high efficiency filtration, and is used to capture dust particles above 0.5μm and various suspended matter, and even particles of smaller particle size.

The utility model of the laparoscopic puncture pneumoperitoneum balance dirty gas collector is suitable for accelerating the discharge of gas pollutants under laparoscope, so as to quickly restore the surgical field, reduce the number of mirror cleaning times, ensure the safety of surgery and the smooth progress of the surgery. At the same time, the negative pressure suction force can be freely adjusted to maintain the pneumoperitoneum balance.

The Y-type three-way, the negative pressure regulating filter and the gas path primary filter of the utility model can be arbitrarily selected and combined, and can also be appropriately adjusted and replaced according to specific surgical conditions and medical care conditions.

The component configuration scheme of the utility model can also be: the inner cavity of the negative pressure regulating filter replaces the high-efficiency air filter core and the adsorbent carrying tube with activated carbon filter cotton. The activated carbon filter cotton is cylindrical and completely fills the inner cavity space of the negative pressure regulating filter. Medical activated carbon filter cotton is preferred. This scheme can be directly connected to a laparoscopic puncture device for use. The negative pressure regulating filter can be used with or without a negative pressure source.

The utility model is also suitable for use in combination with various drainage catheters during and after surgery to achieve individualized solutions for multiple negative pressure treatment modes.

Claims (10)

1. A laparoscopic puncture pneumoperitoneum balance dirty gas collector, characterized in that it comprises a laparoscopic puncture device, one side of the exhaust cavity of the main body of the laparoscopic puncture device is fixedly connected with an exhaust gas external exhaust pipe leading to the outside, an exhaust switch valve is arranged on the exhaust gas external exhaust pipe, and an exhaust gas conduit is connected to the outer end of the exhaust gas external exhaust pipe; The end of the exhaust gas conduit is connected to a negative pressure regulating filter; The negative pressure regulating filter is composed of an upper shell and a lower shell, which are connected by a card slot sealing buckle, and the card slot has a rotational freedom; The top end of the upper shell is fixedly connected to a top air inlet pipe, and the bottom end of the lower shell is fixedly connected to a bottom air outlet pipe; The end of the exhaust gas conduit is connected to the top air intake pipe of the upper shell of the negative pressure regulating filter; The inner cavity of the negative pressure regulating filter is provided with a high efficiency air filter element, an adsorbent carrying tube and a negative pressure regulating valve; The high-efficiency air filter element is arranged in the upstream air intake section of the inner cavity of the upper shell; the upstream end surface of the high-efficiency air filter element covers and intercepts the inner pipe opening of the top air intake pipe; the outer periphery of the high-efficiency air filter element is sealed with the inner wall of the upper shell; The adsorbent carrying tube is arranged in the inner cavity formed by the upper shell and the lower shell, and the tube wall of the adsorbent carrying tube is provided with evenly distributed air permeable sieve holes. The upstream top end of the adsorbent carrying tube is set as an open tube opening, and the top edge of the open tube opening is sealed and pressed against the bottom surface of the high-efficiency air filter element; The downstream bottom end of the adsorbent carrying tube is set as a blind end, and the blind end extends to the bottom end of the lower shell; The lumen of the adsorbent carrying tube is filled with an adsorbent filler; A negative pressure regulating valve is provided in the space between the blind end of the adsorbent carrying tube and the gas outlet pipe at the bottom end of the lower shell; The bottom air outlet pipe of the lower shell of the negative pressure regulating filter is connected to the negative pressure buffer pipe; The end of the negative pressure buffer tube is connected to the negative pressure buffer tank, and the negative pressure buffer tank is connected to the negative pressure generator through the negative pressure tube. 2. The laparoscopic puncture pneumoperitoneum balance dirty gas collector according to claim 1, characterized in that: The interlayer structure of the high-efficiency air filter element at least includes a primary activated carbon melt-blown cloth composite layer, a high-efficiency air filter filler filter element layer, and a final activated carbon melt-blown cloth composite layer; The high-efficiency air filter filler filter element layer is arranged between the primary activated carbon melt-blown cloth composite layer and the final activated carbon melt-blown cloth composite layer, and the three constitute an overall high-efficiency air filter element; The high efficiency air filter filler filter element layer adopts glass fiber filter element filler or chemical fiber filter element filler. 3. The laparoscopic pneumoperitoneum balance dirty gas collector according to claim 2, characterized in that: The high efficiency air filter filler filter element layer adopts polytetrafluoroethylene fiber filler, and the high efficiency air filter filler filter element layer is also filled with _CO2 adsorbent. 4. The laparoscopic puncture pneumoperitoneum balance dirty gas collector according to claim 1, characterized in that: A primary filter for intercepting and filtering the gas path is connected in series on the pipeline of the exhaust gas conduit; The primary filter of the gas path is provided with an upper cone cover and a lower cone cover which are sealed and buckled with each other, a primary filter screen is crimped between the upper cone cover and the lower cone cover, the space between the inner periphery of the upper cone cover and the primary filter screen constitutes an upper expansion cavity, and the space between the primary filter screen and the inner periphery of the lower cone cover constitutes a lower contraction cavity; The upper cone cover and the lower cone cover are connected in series to the pipeline of the exhaust gas conduit through the cone top pipe of the upper cone cover and the cone bottom pipe of the lower cone cover respectively; The upper cone cover cone top pipe, the upper expansion chamber, the primary filter screen, the lower contraction chamber, and the lower cone cover cone bottom pipe sequentially constitute the primary filter channel of the exhaust gas duct; The primary filter screen uses a disc-shaped intercepting fiber membrane. 5. The laparoscopic puncture pneumoperitoneum balance dirty gas collector according to claim 1 or 4, characterized in that: The negative pressure regulating valve adopts a disc-shaped valve plate, on the disc surface of the valve plate, at least one valve hole with a gradually changing width is opened along the arc line inside the surface, and the position of the valve hole corresponds to the bottom end of the lower shell The outlet pipe port; The circumferential edge of the valve plate is fixedly connected to the upper shell body through a connecting piece, and when the upper shell body and the lower shell body rotate relatively, the valve plate and the upper shell body are kept rotating synchronously. 6. The laparoscopic puncture pneumoperitoneum balance dirty gas collector according to claim 1 or 4, characterized in that: A Y-type tee is connected in series on the pipeline of the negative pressure buffer pipe downstream of the negative pressure regulating filter; The negative pressure buffer pipe goes down along the one-way passage of the Y-shaped tee to the negative pressure buffer tank; The other bypass passage of the Y-type three-way is connected to the negative pressure suction tube through a catheter. 7. The laparoscopic pneumoperitoneum balance dirty gas collector according to claim 1, characterized in that: A Y-type tee is connected in series on the exhaust gas conduit upstream of the negative pressure regulating filter; The exhaust gas conduit goes down along the Y-shaped tee to the negative pressure regulating filter; The other bypass passage of the Y-type three-way is connected to the negative pressure suction tube through a catheter. 8. The laparoscopic puncture pneumoperitoneum balanced dirty gas collector according to claim 6 or 7, characterized in that the negative pressure suction tube adopts a Yankee rod. 9. The laparoscopic pneumoperitoneum balance dirty gas collector according to claim 1, characterized in that: The inner cavity of the negative pressure regulating filter replaces the high-efficiency air filter element and the adsorbent carrying tube with activated carbon filter cotton. 10. The laparoscopic puncture pneumoperitoneum balance dirty gas collector according to claim 9, characterized in that: The activated carbon filter cotton is cylindrical and completely fills the inner cavity space of the negative pressure regulating filter.