JP2014204901A - Surgical local exhaust system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surgical local exhaust system capable of preventing gas generated during surgical treatment to a living body from remaining inside an operating room.SOLUTION: A surgical local exhaust system 10 includes: a suction port 26 sucking smoke and fog G1 generated when surgical treatment is applied to a living body; a deodorizing filter part 28 deodorizing the smoke and fog G1 before exhausting the smog and fog G1 sucked from the suction port 26; and a suction tube 30 communicating the suction port 26 with the deodorizing filter 28, and capable of disposing the suction port 26 to face the generation position of the smoke and fog G1. For example, the surgical local exhaust system 10 sucks and purifies the smoke and fog G1 generated by cauterization of a biological tissue with an electric knife 20.

Description

  The present invention relates to a surgical local exhaust system for deodorizing and purifying gas generated when a surgical procedure is performed on a living body.

  When a living tissue is cauterized using an electric knife in an operating room, gas (smoke) containing particles and odor is generated. Normally, the gas containing these particles and odors diffuses into the operating room and is discharged to the outside depending on the ventilation capacity of the air conditioner. For this reason, depending on the ability of the air conditioner, particles and odors may stay in the room for a long time. The retention of particles contributes to an increase in the onset of infectious diseases, and the retention of odor makes the operator uncomfortable and deteriorates work efficiency.

  On the other hand, at the time of minimally invasive surgery using an endoscope or a laparoscope, a smoke evacuation device may be used because smoke generated when using an electric knife interferes with the visual field during surgery (see Patent Document 1).

JP-A-9-94252

  However, the smoke evacuation apparatus as described in Patent Document 1 is provided with a suction port for sucking smoke at the tip of a trocar that is punctured into a living body, and is applied to a general laparotomy or thoracotomy. It is difficult. Furthermore, since emphasis is placed only on ensuring the endoscope's field of view within the abdominal cavity, it is common for fumes sucked from the abdominal cavity to be discharged directly from the smoke exhaust device into the operating room. It is impossible to prevent particles and odors from staying in the operating room.

  The present invention has been made in consideration of the above-described problems of the prior art, and provides a surgical local exhaust system capable of preventing gas generated during a surgical procedure on a living body from staying in an operating room. For the purpose.

  A surgical local exhaust system according to the present invention includes a suction port for sucking a gas generated when a living body is subjected to a surgical treatment, and a deodorization filter unit for deodorizing and exhausting the gas sucked from the suction port. And a tube that communicates between the suction port and the deodorizing filter unit and can be disposed with the suction port facing the gas generation position.

  According to such a configuration, since the suction port can be disposed close to the gas generation position by the tube, the gas containing odors and particles is efficiently sucked and deodorized and cleaned by the deodorizing filter unit. be able to. For this reason, it is possible to prevent particles and odors in the gas from staying in the operating room while preventing the gas from interfering with the surgical field during surgery.

  The surgical dehumidification filter unit is housed inside, and a main body housing connected to the proximal end of the tube with the suction port provided at the distal end thereof has a carriage structure. Therefore, the system can be easily moved to the operating room where the system is required, and can be easily retreated outside the operating room where the system is not required.

  The gas is smoke generated when the living body is cauterized and contains odor and particles, and the deodorizing filter section includes a first filter that removes the odor and a second filter that removes the particles. In addition to the odor removing effect and the particle removing effect, a cleaning effect combining both can be exhibited.

  According to the present invention, gas containing odors and particles can be efficiently sucked and deodorized and cleaned by the deodorizing filter section. For this reason, it is possible to prevent particles and odors in the gas from staying in the operating room while preventing the gas from interfering with the surgical field during surgery.

FIG. 1 is an explanatory diagram of an operating room equipped with a surgical local exhaust system according to an embodiment of the present invention. FIG. 2 is an explanatory view of the operating room shown in FIG. 1 as viewed from the front side. FIG. 3 is a graph showing the experimental results of measuring the operative field particle concentration at each position shown in FIG. FIG. 4 is a graph comparing the operative field particle concentration at each position shown in FIG. 2 with a case where the surgical local exhaust system is not used.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a local exhaust system for surgery according to the present invention will be described in detail with reference to the accompanying drawings by giving preferred embodiments in relation to an operating room where a surgical procedure is performed using this system.

  FIG. 1 is an explanatory view of an operating room 12 including a surgical local exhaust system 10 according to an embodiment of the present invention. The inside of the operating room 12 is illustrated in a side view, and the surgical local exhaust system 10 is illustrated. The main housing 14 is a cross-sectional view, and its internal structure is schematically illustrated.

  The surgical local exhaust system 10 (hereinafter also simply referred to as “exhaust system 10”) is a gas G1 (hereinafter referred to as “gas” G1) that includes odors and particles generated when a doctor 18 cauterizes a patient 16 using an electric knife 20. , "Smoke G1") is locally sucked and deodorized, and the cleaned clean gas G2 is exhausted to maintain the environment in the operating room 12 in a clean state. The exhaust system 10 can be applied to suction of gas generated by a surgical procedure using a medical instrument other than the electric knife 20, and can also be applied to a surgical procedure for a living body such as an animal other than a human. .

  As shown in FIG. 1, the operating room 12 is a well-known operating room provided in a general hospital. In the operating room 12, a surgical bed 22 on which the patient 16 is lying, a shadow lamp 24 that illuminates the patient 16, and fumes G <b> 1 that are locally generated in the vicinity of the treatment portion by cauterization with the electric knife 20 on the patient 16. An exhaust system 10 for suctioning and various medical instruments (not shown) are arranged.

  The exhaust system 10 includes a main body housing 14 equipped with a suction port (suction port) 26 for sucking the smoke G1 and a deodorizing filter unit 28 that deodorizes the smoke G1 sucked from the suction port 26 and exhausts it. A suction tube (tube) 30 communicating between the suction port 26 and the deodorizing filter unit 28 and an exhaust tube 32 for exhausting the clean gas G2 cleaned by the deodorizing filter unit 28 into the room are provided.

  The suction port 26 is an opening connected to the tip of the suction tube 30. The suction port 26 may be a cylindrical or funnel-like member connected to the distal end opening of the suction tube 30 or may utilize the distal end opening itself of the suction tube 30 as it is.

  The main body housing 14 is a box body in which the base end of the suction tube 30 is connected to the upper surface thereof and the base end of the exhaust tube 32 is connected to the lower portion of the back surface thereof, and the engineer can easily move by the wheels 33 provided on the lower surface. It has a bogie structure that can be made. A deodorizing filter unit 28 and a blower 34 that blows air while allowing the smoke G1 to pass through the deodorizing filter unit 28 are mounted inside the main body housing 14.

  The deodorizing filter unit 28 is for removing and purifying odors and particles in the smoke G1 sent from the suction tube 30 to the exhaust tube 32. The deodorizing filter unit 28 is a pre-filter 36, a chemical filter 38, and a HEPA in order from the upstream side to the downstream side in the flow direction of the smoke G 1 from the suction tube 30 to the exhaust tube 32 inside the main body housing 14. And a filter 40. The deodorizing filter unit 28 is further provided with an ultraviolet irradiation device 42 for preventing microbial growth in the deodorizing filter unit 28.

  As the pre-filter 36, a known dust filter or the like used for general air conditioning or dust removal may be used. As the chemical filter 38, a general adsorption filter suitable for removing odors and gases may be used. For example, activated carbon, ACF (fibrous activated carbon), chemical adsorbent, ion exchange resin, zeolite, activated alumina, etc. It is better to use The chemical filter 38 may carry a catalyst suitable for removing odors. As the HEPA filter 40, a known high-performance air filter that is used for general air conditioning or dust removal suitable for removing particles may be used. For removing particles, a MEPA filter (medium performance filter) may be used instead of the HEPA filter 40.

  As the blower 34, a known blower (suction machine) used for general air conditioning or dust removal may be used. In the present embodiment, as shown in FIG. 1, the blower 34 is installed between the pre-filter 36 and the chemical filter 38.

  The suction tube 30 is a flexible tube having predetermined flexibility and shape memory so that the suction port 26 provided at the tip thereof can be maintained in a desired direction and posture at a desired position. As the exhaust tube 32, it is preferable to use a flexible tube similar to the suction tube 30 so that the clean gas G <b> 2 can be discharged to a position that does not get in the way in the operating room 12. A front end opening of the exhaust tube 32 serves as an exhaust port 44 for the clean gas G2.

  Next, an example of a method of using the surgical local exhaust system 10 according to the present embodiment will be described.

  When using the exhaust system 10, as shown in FIG. 1, the main body housing 14 having a carriage structure is moved to a desired position in the operating room 12 where the operation is performed, and a locking means (not shown) or the like is required as necessary. Is used to prohibit turning of the wheel 33. Subsequently, the suction tube 30 is deformed to adjust the position of the suction port 26, and the suction port 26 is brought close to the treatment part of the patient 16 (cauterization position by the electric knife 20 at the abdominal part or the thoracotomy part) and the treatment is performed. Open posture facing the part.

  By appropriately driving the blower 34 according to the use of the electric knife 20 by the doctor 18, the smoke G <b> 1 generated from the treatment portion of the patient 16 can be locally sucked by the suction port 26. The smoke G1 sucked from the suction port 26 passes through the prefilter 36 under the blowing action of the blower 34 to remove coarse particles and dust, and then remains when passing through the chemical filter 38 and the HPEA filter 40. The particles and odor are removed to form a clean gas G2, which is returned from the exhaust tube 32 to the operating room 12 through the exhaust port 44.

  As described above, according to the exhaust system 10 according to the present embodiment, since the suction port 26 can be disposed close to the generation position of the smoke G1 by the suction tube 30, the smoke G1 is efficiently sucked. The deodorizing filter unit 28 can be deodorized and cleaned. For this reason, it can prevent that the particle | grains and odor in the smoke G1 stay in the operating room 12, preventing the smoke G1 from interfering with the surgical field at the time of an operation. Therefore, it is possible to reduce the incidence of infectious diseases due to the improvement of the local cleanliness of the surgeon and improve the work efficiency of the doctor 18 by removing unpleasant odors, that is, it is possible to maintain a clean indoor environment.

  In the exhaust system 10, since the carriage structure is mounted on the main body housing 14 that houses the deodorizing filter unit 28, the exhaust system 10 can be easily moved to a desired operating room 12 where treatment with the electric knife 20 is performed. In other words, in the operating room 12 that does not require the exhaust system 10, the exhaust system 10 can be easily retreated to the outside or the corner of the room. In addition, since the cleaned clean gas G2 is returned again into the operating room 12 by the exhaust tube 32, there is no need for a structure in which the exhaust tube 32 of the clean gas G2 to be exhausted is elongated and installed outside the room. Yes, convenience and installation flexibility are high.

  Since the deodorizing filter unit 28 includes a chemical filter (first filter) 38 that mainly removes odor in the smoke G1 and a HEPA filter (second filter) 40 that mainly removes particles, the odor removing effect is provided. In addition to the effect of removing particles, a synergistic cleaning effect combining both can be exhibited. Of course, the filter configuration installed in the deodorizing filter unit 28 can be appropriately changed.

  Next, the removal effect of the fumes G1 in the surgical field when the cautery is performed on the living tissue using the electric scalpel 20 using the surgical local exhaust system 10 according to the present embodiment will be described by showing an experimental result by simulation. .

  FIG. 2 is an explanatory view of the operating room 12 shown in FIG. 1 as viewed from the front side, clearly showing how the particle concentration of the fumes G1 is measured at 10 measurement points (positions P1 to P10), and the exhaust system. 10, the configuration other than the suction port 26 is omitted. FIG. 3 is a graph showing the experimental results of measuring the surgical field particle concentration at each position P1 to P10 shown in FIG. 2. The horizontal axis is the measurement points P1 to P10, and the vertical axis is the surgical field particle concentration (individual). / Cf). FIG. 4 is a graph comparing the surgical field particle concentration at each position P1 to P10 shown in FIG. 2 with the case where the exhaust system 10 is not used, the horizontal axis is the measurement points P1 to P10, and the vertical axis is the exhaust system. 10 is a ratio of the measured values (1) to (4) with respect to the form (0) in which 10 is not used.

  In the experiment, as shown in FIGS. 1 and 2, the suction port 26 of the exhaust system 10 is disposed so as to be close to the treatment portion, and as shown in FIG. 2, the height H1 from the floor of the operating room 12 is set. Positions P1, P2, P3, P4 and P5 along the height direction of the patient 16 at (1000 mm) and a position P6 along the height direction of the patient 16 at a height H2 (800 mm) from the floor of the operating room 12 , P7, P8, P9, and P10, the particle concentration at a total of 10 points was measured. The height H0 of the recumbent surface of the patient 16 on the surgical bed 22 was 700 mm.

At this time, as shown in (1) to (4) in FIGS. 3 and 4, the suction amount (m ³ / min) of the exhaust system 10 by the blower 34 is 0.1 m ³ / min and 1.0 m ^3. Simulation was performed by changing the diameter of the suction port 26 to 100 mm (100 φ) and 300 mm (300 φ) for each (see (1) to (4) in FIGS. 3 and 4). ). (0) in FIG. 3 and FIG. 4 is a result when the exhaust system 10 is not used.

As apparent from FIGS. 3 and 4, it was found from this experiment that (4) 1.0 m ³ / min, 100φ is the most effective for local cleaning of the surgical field. In particular, at (4) 1.0 m ³ / min, 100φ, it has been confirmed that the particle concentration can be greatly reduced at all measurement points (positions P1 to P10) compared to (0) without exhaust. It was.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 Surgical local exhaust system 12 Operating room 14 Main body housing 16 Patient 18 Doctor 20 Electric knife 22 Surgical bed 26 Suction port 28 Deodorizing filter part 30 Suction tube 32 Exhaust tube 33 Wheel 34 Blower 36 Prefilter 38 Chemical filter 40 HEPA filter 42 Ultraviolet irradiation device 44 Exhaust port G1 gas, haze G2 Clean gas

Claims (3)

A suction port for sucking gas generated when a surgical procedure is performed on a living body;
A deodorizing filter unit for deodorizing the gas sucked from the suction port and exhausting the gas;
A tube that communicates between the suction port and the deodorizing filter unit, and that can be disposed with the suction port facing the gas generation position;
A surgical local exhaust system comprising: The surgical local exhaust system of claim 1.
A surgical main body characterized in that it comprises a main body housing that houses the deodorizing filter portion inside and that is connected to the proximal end of the tube with the suction port at the tip, and the main body housing has a cart structure. Exhaust system. The surgical local exhaust system according to claim 1 or 2,
The gas is generated when the living body is cauterized, and is a smoke containing odor and particles,
The said deodorizing filter part is provided with the 1st filter which removes the said odor, and the 2nd filter which removes the said particle | grain, The local exhaust system for surgery characterized by the above-mentioned.

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