JP5111953B2 - Insufflation gas circulation device and insufflation gas circulation system provided with the same - Google Patents

Description

  The present invention relates to a technique for ensuring a good visual field during surgery in endoscopic surgery.

  Conventionally, a technique for ensuring a good field of view of an endoscope inserted into the abdominal cavity by supplying gas into the abdominal cavity of the patient to make the abdominal cavity a predetermined pressure and inflating the abdominal wall, so-called pneumoperitoneum The law is known.

  In this insufflation method, as shown in FIG. 11, an insufflation apparatus 102 is connected to a cylindrical trocar 101 punctured in a patient's abdominal wall J1, and CO2 gas derived from the insufflation apparatus 102 is supplied to the trocar 101. In general, it is discharged into the abdominal cavity J2 of the patient. By this pneumoperitoneum method, the visual field of the endoscope 103 inserted into the abdominal cavity J2 can be ensured satisfactorily.

  In endoscopic surgery, not only the trocar 101 but also a trocar 105 and a trocar 106 for inserting an instrument 104 including an electric knife, a laser, or an ultrasonic coagulation / cutting device into the abdominal cavity J2. That is, in endoscopic surgery, a plurality of trocars are generally punctured to insert the endoscope 103, the instrument 104, and the like. An incision or the like of the patient's tissue J3 is performed by the instrument 104 inserted through the trocars 105 and 106.

  However, when an incision or the like of the tissue J3 is performed by the instrument 104, smoke or mist J4 is generated in the abdominal cavity J2 due to heat generation of the tissue J3, diffusion of a fine piece of the tissue J3, or the like. The visual field may deteriorate.

  As an apparatus for solving such a problem, for example, Patent Document 1 discloses a smoke cleaning device 107. The smoke cleaning device 107 is connected to the trocars 105 and 106 through a tube 108 and a tube 109, respectively.

The smoke cleaning device 107 sucks the gas in the abdominal cavity J2 through the tube 108, passes the gas through a filter provided in the smoke cleaning device 107, and returns the gas into the abdominal cavity J2 through the tube 109. The smoke and mist J4 are removed.
US Pat. No. 6,544,210

  However, in the technique of Patent Document 1, CO2 gas in the abdominal cavity J2 is once guided outside the patient's body, and during this time, the temperature of the CO2 gas may be lower than the temperature in the abdominal cavity J2 due to the influence of room temperature. .

  In the technique of Patent Document 1, since the CO2 gas guided outside the body is returned as it is into the abdominal cavity J2 of the patient, when the temperature of the CO2 gas is lowered, the body temperature of the patient is affected. In some cases, extra effort may be required to manage the patient's condition during surgery.

  Further, when the temperature of the CO2 gas is lowered as described above, condensation occurs in the tube 109, and water droplets due to the condensation may be introduced into the abdominal cavity J2 according to the flow of the CO2 gas in the tube 109. .

  The present invention has been made in view of the above problems, and an insufflation gas circulation device capable of preventing an increase in labor for managing the condition of a patient during an operation while suppressing the occurrence of dew condensation, and an insufflation gas provided with the same It aims to provide a circulation system.

In order to solve the above problems, the present invention is configured to connect a pair of trocars that can be punctured to the abdominal wall of a patient. An insufflation gas circulation device capable of discharging gas from the other trocar through a filter, wherein the gas is heated so that the gas discharged from the other trocar has a temperature corresponding to a patient's body temperature. Heating means , a suction side tube having one end connected to the one trocar, a discharge side tube having one end connected to the other trocar, and the suction side tube and the other end of the discharge side tube connected to each other And holding the filter and sucking gas from the suction side tube and passing the gas through the filter. A heating unit that forms a flow of gas discharged from the discharge side tube, and the heating unit is provided in at least one of the suction side tube and the discharge side tube, and generates heat when supplied with electric power And a power supply for supplying power to the heating element, and the pneumoperitoneal gas circulation device is further configured to be detachable from the holding member and further includes a main body member provided with the power supply. On the other hand, by providing the holding member, the power source and the heating element are electrically connected to each other.

  According to the present invention, the gas heated by the heating means so as to have a temperature corresponding to the body temperature of the patient can be returned to the abdominal cavity of the patient through the discharge side tube. Unlike the prior art that can be returned to the abdominal cavity of the patient as it is, it is possible to prevent extra labor from being generated in managing the patient's condition during the operation.

  In the present invention, since the gas is heated and then discharged, it is possible to prevent dew condensation of the gas at least in the vicinity of the trocar in the discharge side tube.

  Therefore, according to the present invention, it is possible to prevent an increase in the labor of state management of the patient during the operation while suppressing the occurrence of condensation.

In the present invention, the insufflation gas circulation device includes a suction side tube having one end connected to the one trocar, a discharge side tube having one end connected to the other trocar, the suction side tube and the discharge side. A holding member that holds the filter while the other ends of the side tubes are connected to each other, and an air flow that sucks gas from the suction side tube and discharges the gas from the discharge side tube through the filter and a means.

Therefore , the air can be guided from one trocar through the suction side tube to the holding member by the blowing means, and the gas can pass through the filter and be guided to the discharge side tube to be discharged from the other trocar.

Furthermore, in the present invention, the heating means includes a heating element that is provided on at least one of the suction side tube and the discharge side tube and generates heat upon receiving power, and a power source that supplies power to the heating element. A main body member configured to be detachable from the holding member and provided with the power source, and the power source and the heating element are electrically connected to each other by attaching the holding member to the main body member. Connected.

For this reason, since the heating member and the power source can be electrically connected or disconnected by attaching and detaching the holding member and the main body member, the holding member, the suction side tube, the discharge side tube, and the heating element are provided. While making the configuration disposable, it is possible to establish a configuration in which the main body including a power source for supplying power to the heating element is reused.

Therefore, according to the present invention, since a heating function can be obtained by using a relatively expensive power source and replacing the disposable part, the product has a high cost performance for the user and an easy to use procedure. can do.

Further, the present invention is configured so that a pair of trocars capable of puncturing the abdominal wall of a patient can be connected to each other, and in a state where the trocars are connected to each trocar, the gas is sucked from one of the trocars and this gas is passed through the filter to the other. An insufflation gas circulation device capable of discharging from the trocar, wherein the gas discharged from the other trocar has a temperature corresponding to the body temperature of the patient, and heating means for heating the gas; The suction side tube having one end connected to the one trocar, the discharge side tube having one end connected to the other trocar, the other end of each of the suction side tube and the discharge side tube being connected, and the filter A holding member for holding the gas and sucking the gas from the suction side tube and passing the gas through the filter to the discharge side tube; The holding member is configured to store the filter so that two chambers are formed inside with the filter interposed therebetween, and the blowing unit includes: An impeller provided in at least one of the two chambers and capable of forming a gas flow from one of the chambers to the other, and a drive source for rotationally driving the impeller. The pneumoperitone gas circulation device further includes a main body member configured to be detachable from the holding member and provided with the drive source, and the holding member is attached to the main body member. An insufflation gas circulation device is provided in which an output shaft of the drive source and an input shaft of the impeller are rotatably meshed with each other.

According to the present invention, the gas heated by the heating means so as to have a temperature corresponding to the body temperature of the patient can be returned to the abdominal cavity of the patient through the discharge side tube. Unlike the prior art that can be returned to the abdominal cavity of the patient as it is, it is possible to prevent extra labor from being generated in managing the patient's condition during the operation.

In the present invention, since the gas is heated and then discharged, it is possible to prevent dew condensation of the gas at least in the vicinity of the trocar in the discharge side tube.

Therefore, according to the present invention, it is possible to prevent an increase in the labor of state management of the patient during the operation while suppressing the occurrence of condensation.

In the present invention, the insufflation gas circulation device includes a suction side tube having one end connected to the one trocar, a discharge side tube having one end connected to the other trocar, the suction side tube and the discharge side. A holding member that holds the filter while the other ends of the side tubes are connected to each other, and an air flow that sucks gas from the suction side tube and discharges the gas from the discharge side tube through the filter Means.

Therefore, the air can be guided from one trocar through the suction side tube to the holding member by the blowing means, and the gas can pass through the filter and be guided to the discharge side tube to be discharged from the other trocar.

Further, in the present invention, the holding member is configured to store the filter such that two chambers are formed inside with the filter interposed therebetween, and the air blowing means includes at least one of the two chambers. An impeller provided in one of the chambers and capable of forming a gas flow from one of the chambers to the other, and a drive source for rotationally driving the impeller.

Therefore, a gas flow through the filter can be formed by rotationally driving an impeller provided inside the holding member with a drive source.

Here, the present invention further includes a main body member configured to be detachable from the holding member and provided with the driving source, and the driving source is mounted by attaching the holding member to the main body member. The output shaft and the input shaft of the impeller mesh with each other in a rotatable manner.

Therefore, since the input shaft of the impeller and the output shaft of the drive source can be connected or released by detaching the holding member and the main body member, the holding member, the suction side tube, the discharge side tube, and the blade While the configuration including the vehicle is made disposable, it is possible to establish a configuration in which the main body including the drive source that rotationally drives the impeller is used.

Therefore, according to the present invention, since a gas flow can be formed by using a relatively expensive drive source and exchanging the disposable part, the cost performance is high for the user and the use procedure is easy. It can be a product.

  Although not intended to limit the heating range of the gas by the heating means, it is preferable that the heating means heats the gas in the discharge side tube.

  In this way, the energy required for heating can be saved by minimizing the heating range.

  In this configuration, it is particularly preferable that the suction side tube includes a trap unit capable of catching water droplets generated in the suction side tube.

  In this way, while conserving energy by minimizing the heating range as described above, even when condensation occurs in the suction side tube, the water droplets are caught by the trap means, Distribution in the insufflation gas circulation device can be prevented.

  On the other hand, the heating means controls the power supplied to the heating element so that the heating element that generates heat upon supply of power and the gas discharged from the other trocar has a temperature corresponding to the body temperature of the patient. It is possible to adopt a configuration provided with a control means.

  If it does in this way, the temperature of gas can be adjusted with the simple structure of controlling the electric power supplied to a heat generating body.

  In this case, it further comprises detection means for detecting the temperature of at least a part of the gas guided between the two trocars, and the control means supplies power supplied to the heating element according to the temperature detected by the detection means. It is particularly preferred to control.

  In this way, since the heating means can be feedback-controlled according to the actual temperature of the gas, more precise temperature management can be performed.

  Further, the gastro-abdominal gas circulation device, a suction-side trocar connectable to the suction-side tube, and a discharge-side trocar connectable to the discharge-side tube, the discharge-side trocar punctures the patient's abdominal wall. In such a state, the endoscope can be inserted into the abdominal cavity of the patient from the outside of the abdominal wall, and the gas guided from the discharge side tube can be blown to the inserted endoscope. It is preferable to be configured.

  In this way, since it is equipped with a set of tools required for the circulation of the pneumoperitoneal gas including the suction side trocar and the discharge side trocar, the pneumoperitoneal gas is immediately obtained even if the trocar is not already punctured by the patient. Can be circulated.

  Further, in the above configuration, the discharge side trocar is configured to be able to blow the gas guided from the discharge side tube to the endoscope inserted in the discharge side trocar, so The endoscope can be warmed, and clouding of the lens of the endoscope can be suppressed. That is, in the present invention, by blowing a gas heated to a temperature corresponding to the patient's body temperature onto an endoscope that has already been inserted into the abdominal cavity of the patient, the endoscope corresponds to the patient's body temperature. Since the temperature difference between the temperature of the endoscope and the temperature in the abdominal cavity can be reduced by heating to the temperature, it is possible to suppress the clouding of the lens of the endoscope.

  Furthermore, the present invention provides an insufflation gas circulation system including the insufflation gas circulation device and an insufflation device capable of introducing carbon dioxide gas into the abdominal cavity of a patient via the other trocar.

  According to the present invention, the gas heated by the heating means so as to have a temperature corresponding to the body temperature of the patient can be returned to the abdominal cavity of the patient through the discharge side tube. Unlike the prior art that can be returned to the abdominal cavity of the patient as it is, it is possible to prevent extra labor from being generated in managing the patient's condition during the operation.

  In the present invention, since the gas is heated and then discharged, it is possible to prevent dew condensation of the gas at least in the vicinity of the trocar in the discharge side tube.

  Therefore, according to the present invention, it is possible to prevent an increase in the labor of state management of the patient during the operation while suppressing the occurrence of condensation.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view showing a state in which an insufflation gas circulation device according to an embodiment of the present invention is attached to a patient.

  Referring to FIG. 1, an insufflation gas circulator 1 includes a pair of trocars 2 and trocars 3 and a circulator main body 4 that connects the trocars 2 and 3 together.

  The trocars 2 and 3 are synthetic resin or metal members formed in a cylindrical shape having an opening cross-sectional area into which the endoscope 103 and the instrument 104 can be inserted. The tip portions of these trocars 2 and 3 are puncture end portions 2a and 3a that are pointed so as to be able to puncture the patient's abdominal wall J1, while a lid 5 is provided at the other end portion. The lid 5 closes the proximal end portions of the trocars 2 and 3 in a state where the endoscope 103 and the instrument 104 are not inserted, while maintaining the airtightness in the trocars 2 and 3. It has elasticity so that the instrument 104 can be inserted. Furthermore, the attachment part 6 branched to a side is provided in the middle part of the longitudinal direction of the trocars 2 and 3, respectively. This attachment part 6 is for connecting the circulation apparatus main body 4 mentioned later.

  The trocar 7 in the figure has the same configuration as the trocars 2 and 3, but punctures the abdominal wall J 1 separately from the trocars 2 and 3 in order to supply CO 2 gas into the abdominal cavity J 2 of the patient. It has been done. That is, an insufflation apparatus 8 is connected to the attachment portion 6 of the trocar 7, and CO 2 gas is supplied from the insufflation apparatus 8 through the trocar 7 into the abdominal cavity J 2.

  FIG. 2 is a perspective view showing the overall configuration of the circulation device main body of FIG. FIG. 3 is a plan view showing a state in which the apparatus main body and the circulation unit in the circulation apparatus main body of FIG. 2 are separated.

  1 to 3, the circulation device main body 4 sucks the gas in the abdominal cavity J <b> 2 from the trocar 3 while being connected between the trocars 2 and 3, and a filter to be described later. It is possible to discharge from the trocar 2 through.

  Specifically, the circulation device main body 4 includes a circulation unit 9 for connecting the respective trocars 2 and 3, and a device main body (main body member) 10 configured to be detachable from the circulation unit 9. .

  The circulation unit 9 includes a suction side tube 11 having one end connected to the trocar 3, a discharge side tube 12 having one end connected to the trocar 2, and the other ends of the suction side tube 11 and the discharge side tube 12 respectively. And a filter holding member 14 to be connected.

  The suction side tube 11 includes a pair of a distal end tube 15 and a proximal end tube main body 16 and a trap member (trap means) 17 provided between the tubes 15 and 16.

  As shown in FIG. 8, the trap member 17 includes a trap container 18 and a lid member 19 attached to the trap container 18 so as to close the opening. An attachment portion 19a to which the distal end tube 15 is connected and an attachment portion 19b to which the proximal end tube 16 is connected are formed on the surface of the lid member 19, while the attachment portion 19b is connected to the back surface of the lid member 19. A nozzle 20 extending from the portion 19a to the vicinity of the bottom of the trap container 18 is formed. Therefore, when water flows into the trap container 18 from the distal tube 15 through the nozzle 20, the water flows into the mounting portion 19b (base end side tube 16) until the water is filled in the trap container 18. Can be blocked.

  As shown in FIG. 6, the discharge side tube 12 includes a tube main body 21, and a thermocouple 22 and a heat wire (heating element) 23 provided in the tube main body 21. The thermocouple 22 is for detecting the temperature in the tube main body 21. Moreover, the heat ray 23 is for heating the inside of the tube main body 21 so that the temperature in the tube main body 21 becomes a desired temperature.

  4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG. 6 is an exploded perspective view showing a part of the filter holding member 14 of FIG. FIG. 7 is a plan view of the third case member of FIG.

  4 to 7, the filter holding member 14 includes four case members that are stacked one above the other to form a container-like body (hereinafter referred to as the first case member 24 and the second case in order from the top). Member 25, third case member 26, and fourth case member 27), a filter 28 and a centrifugal impeller 29 housed in the case members 24 to 27, and an input shaft of the centrifugal impeller 29. And an electrode 31, an electrode 32, an electrode 33, and an electrode 34 (see FIG. 6) electrically connected to the thermocouple 22 and the heat wire 23, respectively.

  The case members 24 to 27 hold the filter 28 so that a chamber S1 on the near side and a chamber S2 on the back side of the filter 28 are formed therein. The front chamber S 1 communicates with the suction tube 11, while the back chamber S 2 communicates with the discharge tube 12. The centrifugal impeller 29 is provided in the front-side chamber S1, and can blow air from the chamber S1 toward the back-side chamber S2.

  Specifically, a suction port 35 for introducing gas from the suction side tube 11 is formed between the first case member 24 and the second case member 25. A sleeve 36 extending upward in the third case member 26 faces the chamber between the first case member 24 and the second case member 25, and gas is guided through the sleeve 36 to the lower surface of the third case member. The centrifugal impeller 29 is provided below the sleeve 36 and between the third case member 26 and the fourth case member 27.

  Here, the configuration of the third case member 26 and the fourth case member 27 will be described in detail. As shown in detail in FIGS. 6 and 7, the third case member 26 includes a first peripheral wall 37 that surrounds the periphery of the sleeve 36, a second peripheral wall 38 that surrounds the outer side of the first peripheral wall 37, and a first peripheral wall. 37 and a bypass plate 39 formed between the second peripheral wall 38 and a bottom plate 40 connecting the first peripheral wall 37 and the second peripheral wall 38 from the lower portion of the sleeve 36.

  As shown in FIGS. 4 and 6, the inlet 39 a of the bypass channel 39 is formed between the third case member 26 and the fourth case member 27 below the bottom plate 40. The bypass passage 39 is inclined upward in a space between the first peripheral wall 37 and the second peripheral wall 38 from the inlet 39a, and is finally formed on the first peripheral wall 37 above the bottom plate 40. The third case member 26 is formed so as to reach the outlet 39b.

  Further, the sleeve 36 has a lower portion having a diameter larger than the upper portion through a shoulder portion 36a. On the inner side surface of the first peripheral wall 37, a protrusion is formed inward, and an upper surface of the protrusion 36 is formed. 37a and the shoulder portion 36a have the same height at a position higher than the outlet 39b of the bypass passage 39. The filter 28 is placed on the shoulder 36a and the upper surface 37a, and is sandwiched between the lower surfaces of the pair of inner and outer pressing cylinders 25a and 25b extending downward in the second case member 25.

  Therefore, the gas guided to the outside of the centrifugal impeller 29 through the sleeve 36 as shown by the arrow Y1 in FIG. 4 is introduced into the bypass passage 39 from the inlet 39a as shown by the arrow Y2. The gas guided to the outlet 39b (the position below the filter 28) above the bottom plate 40 through the outside of the first peripheral wall 37 passes through the filter 28 as indicated by the arrow Y3, and as indicated by the arrow Y4. Then, it is guided into the discharge side tube 12 through the discharge port 41 formed in the third case member 26 through the notch 25c formed in the outer pressing cylinder 25a.

  The input gear 30 is connected to a rotation shaft 43 of a centrifugal impeller 29 that penetrates the bottom plate 42 of the fourth case member 27. That is, the input gear 30 is disposed outside the case members 24 to 27.

  As shown in FIG. 6, the electrodes 31 to 34 are fixed to the second peripheral wall 38 so as to close the holes 26 a, 26 b, 26 c, and 26 d that penetrate the second peripheral wall 38 of the third case member 26. Yes. The electrodes 31 and 32 are connected to the thermocouple 22, and the electrodes 33 and 34 are connected to the hot wire 23.

  The circulation unit 9 described above is attached to the apparatus main body 10 so that a rotational driving force is supplied to the rotation shaft 43 of the centrifugal impeller 29 and the thermocouple 22 is connected via the electrodes 31 to 34. In addition, electric power is supplied to the heat wire 23. Hereinafter, a specific configuration of the apparatus main body 10 will be described.

  2, 3, and 5, the apparatus main body 10 includes a case 46 in which a recess 45 in which the filter holding member 14 can be mounted is formed, a motor 47 built in the case 46, A plurality of probes 48 for supplying power to the electrodes 31 to 34, an input unit 49 for inputting various set values, and a control unit electrically connected to the motor 47, the probe 48 and the input unit 49 50.

  The case 46 is a hollow container formed in a substantially rectangular parallelepiped except for a portion where the recess 45 is formed. The concave portion 45 is provided at a corner portion in front of the upper portion of the case 46 and has a shape that opens upward and forward. Specifically, the recess 45 has a shape that allows the filter holding member 14 to be inserted from the front, and the case 46 has a rear corner 14a (see FIG. 3) of the filter holding member 14 inserted into the recess 45. An arcuate edge 46a that covers from above is formed. The edge 46a prevents the filter holding member 14 from coming off upward. It should be noted that the forward locking is achieved by engaging a claw (not shown) arranged facing the recess 45 with the filter holding member 14. This forward locking can be released by a pulling operation of the knob 51 provided on the front surface of the case 46.

  Further, on the back surface of the case 46, a pair of mounting plates 52 and a mounting plate 53 that extend rearward, and a wing screw 54 that penetrates the mounting plate 52 are provided. The wing screw 54 can be brought into contact with and separated from the other mounting plate 53 by changing the screwing depth with respect to the mounting plate 52. Therefore, the case 46 can be attached to the pole by sandwiching a pole or the like (not shown) between the tip of the thumbscrew 54 and the attachment plate 53.

  As shown in FIG. 5, the motor 47 includes a motor body 56 attached to a top plate 55 of a case 46 that defines the lower surface of the recess 45, an output shaft 57 that penetrates the top plate 55 up and down, and the top plate And an output gear 58 connected to the output shaft 57 above 55. The output gear 58 is provided at a position where it can mesh with the input gear 30 of the filter holding member 14 inserted into the recess 45.

  Each probe 48 is provided through the front plate 59 of the case 46 defining the rear surface of the recess 45 in the front-rear direction. These probes 48 are provided at positions where they can come into contact with the respective electrodes 31 to 34 of the filter holding member 14 inserted into the recess 45.

  Therefore, by inserting the filter holding member 14 into the recess 45, the centrifugal impeller 29 and the motor 47 are driven and connected, and the electrodes 31 to 34 are electrically connected to the probes 48, respectively. become.

  The input unit 49 is configured to be able to input the air volume of the gas to be circulated, the target temperature of the gas to be returned into the patient's abdominal cavity J2, and the like, and outputs the input value to the control unit 50 described later.

  FIG. 9 is a block diagram showing an electrical configuration of the control unit 50 of FIG.

  Referring to FIG. 9, the control unit 50 receives a setting temperature input operation from the input unit 49 and sets a target temperature of the gas, and corresponds to the temperature set by the temperature setting unit 60. The temperature output means 61 for specifying the power to be supplied and supplying this power to the heat wire 23 from the power source 64, and determining the temperature in the tube main body 21 based on the detection result by the thermocouple 22, and the result to the temperature output means Temperature determining means 62 for outputting.

  The temperature setting means 60 can set the target temperature within a temperature range corresponding to the patient's body temperature (for example, within a range of 35 ° C. to 38 ° C.).

  The temperature output means 61 performs feedback control of the power supplied to the heat wire 23 in accordance with an input signal from the temperature determination means 62.

  Further, the control unit 50 adjusts the power supplied to the motor 47 in response to the input operation of the air volume by the input unit 49.

  Hereinafter, the operation of the pneumoperitone gas circulation apparatus 1 will be described with reference to FIGS.

  First, the filter holding member 14 is attached to the apparatus main body 10, and the temperature of the gas to be returned to the abdominal cavity of the patient and the air volume are set using the input unit 49 of the apparatus main body 10. Next, when an operation for starting circulation is performed by the input unit 49, the motor 47 rotates at a speed corresponding to the air volume, and electric power corresponding to the temperature is supplied to the hot wire 23.

  While the gas is being circulated, the temperature of the gas in the tube main body 21 of the discharge side tube 12 is detected by the thermocouple 22 and the control unit 50, and the electric power supplied to the hot wire 23 based on this detected temperature. Is adjusted.

  As described above, according to the embodiment, by supplying electric power from the power source 64 to the heat wire 23, the gas heated so as to have a temperature corresponding to the patient's body temperature is passed through the discharge side tube 12 to the patient's body. Since it can be returned to the abdominal cavity J2, unlike the conventional technique that may return the gas in which the temperature has decreased to the abdominal cavity J2 of the patient as it is, it prevents the extra effort in managing the patient's condition during the operation. can do.

  Moreover, in the said embodiment, since it is supposed that it discharges | emits in the state heated, the dew condensation of the gas in the position near the trocar 2 can be prevented at least among the discharge side tubes 12.

  Therefore, according to the present invention, it is possible to prevent an increase in the labor of state management of the patient during the operation while suppressing the occurrence of condensation.

  According to the embodiment, by rotating the centrifugal impeller 29 by the motor 47, the gas is led from the trocar 3 through the suction side tube 11 to the filter holding member 14, and after passing the gas through the filter 28, the discharge side tube. 12 can be discharged from the trocar 3.

  According to the embodiment, since the gas in the discharge side tube 12 is heated by the heat wire 23, the heating range can be minimized and energy required for heating can be saved.

  According to the embodiment, since the suction side tube 11 has the trap member 17, dew condensation occurs in the suction side tube 11 while saving energy by minimizing the heating range as described above. Even in this case, the water droplets can be caught by the trap member 17 to prevent the water droplets from circulating in the circulation device main body 4.

  According to the embodiment, since the power supplied to the heat wire 23 can be feedback-controlled according to the actual temperature of the gas detected by the thermocouple 22, more precise temperature management can be performed.

  According to the embodiment, the filter holding member 14 and the apparatus main body 10 can be attached and detached to connect or release the rotary shaft 43 of the centrifugal impeller 29 and the output shaft of the motor 47. While the circulation unit 9 including the member 14, the suction side tube 11, the discharge side tube 12, and the centrifugal impeller 29 is made disposable, the apparatus main body 10 including the motor 47 that rotationally drives the centrifugal impeller 29 is reused. A configuration can be established.

  Therefore, according to the embodiment, since the gas flow can be formed by using the relatively expensive motor 47 and exchanging the circulation unit 9, the cost performance for the user is high and the use procedure is easy. Product.

  In addition, according to the embodiment, the filter holding member 14 and the apparatus main body 10 can be attached and detached, whereby the electrical connection or release between the heat wire 23 and the power source 64 can be performed. While the circulation unit 9 including the suction side tube 11, the discharge side tube 12, and the heat wire 23 is made disposable, a configuration in which the apparatus main body 10 including the power source 64 that supplies power to the heat wire 23 is used can be established. it can.

  Therefore, according to the embodiment, since the function of heating the gas in the discharge side tube 12 can be obtained by using the relatively expensive power source 64 and exchanging the circulation unit 9, it is cost effective for the user. Is high and the product can be used easily.

  Further, according to the pneumoperitone gas circulator 1 according to the embodiment, in addition to the effects obtained by the circulator main body 4, it is necessary to circulate pneumoperitone gas including the suction side trocar 3 and the discharge side trocar 2. Since a set of tools is provided, the insufflation gas can be immediately circulated even if the trocars 2 and 3 are not already punctured by the patient.

  Further, the insufflation gas circulating apparatus 1 is configured such that the discharge side trocar 2 can blow the gas guided from the discharge side tube 12 to the endoscope 103 inserted into the trocar 2. Therefore, the endoscope 103 can be warmed by the gas, and clouding of the lens of the endoscope 103 can be suppressed. In other words, in the pneumoperitone gas circulation device 1, by blowing the gas heated to a temperature corresponding to the body temperature of the patient onto the endoscope 103 that has already been inserted into the abdominal cavity J2 of the patient, the endoscope Since the temperature difference between the temperature of the endoscope 103 and the temperature in the abdominal cavity J2 can be reduced by heating the temperature 103 to a temperature corresponding to the body temperature of the patient, the lens of the endoscope 103 is suppressed from being clouded. Can do.

  The insufflation gas circulation device 1 employs a system in which the insufflation device 8 is separately provided (see FIG. 1). However, as shown in FIG. 10, the insufflation gas circulation device 1 and the insufflation device 8 are provided. It is also possible to construct an insufflation gas circulation system 70 that combines the above.

  That is, the insufflation gas circulation system 70 is configured to further include an insufflation device 8 interposed in the middle of the discharge side tube 12 in addition to the insufflation gas circulation device 1. With such a configuration, CO2 gas can be introduced from the pneumoperitoneum 8 through the trocar 2 into the abdominal cavity J2 of the patient, and the pneumoperitoneum gas circulation device 1 and the pneumoperitoneum 8 are used in parallel. Unlike the case where it is used, it is not necessary to puncture the abdominal wall J1 with the trocar 7 for connecting the pneumoperitoneum device 8. Therefore, according to the pneumoperitoneum gas circulation system 70, it is possible to achieve the same effect as the above embodiment while further reducing the burden on the patient.

  In the embodiment of FIG. 10, the configuration in which the insufflation apparatus 8 is interposed in the middle of the discharge side tube 12 is described. However, the insufflation apparatus 8 and the circulation device main body 4 are integrated and discharged to this. A configuration in which the side tube 12 is connected is also possible.

  In the embodiment of FIG. 10, the configuration in which the insufflation apparatus 8 is interposed in the middle of the discharge side tube 12 is described, but a joint having at least three ports is interposed in the middle portion of the discharge side tube 12. It is also possible to connect the discharge side tube 12 using the two ports of this joint, while connecting another tube to another port and to connect the pneumoperitoneum device 8 to this tube. That is, the tube connected to the insufflation apparatus 8 can be joined to the discharge side tube 12 through the joint. In addition, as long as there are at least three ports as the joint, the shape thereof is not questioned.

  Thus, when it is set as the structure which merged the insufflation apparatus 8 to the middle part of the discharge side tube 12, the insufflation gas circulation apparatus 1 original function called the insufflation gas circulation function via the discharge side tube 12 was carried out. The pneumoperitoneum 8 can be removed from the discharge side tube 12 while maintaining its function and maintenance can be performed. In addition, since the degree of freedom of removal is high in this way, there is also an advantage that switching between the connection line as shown in FIG. 1 and the connection line joined to the discharge side tube 12 can be easily performed.

It is side surface sectional drawing which shows the state which mounted | wore the patient with the insufflation gas circulation apparatus which concerns on embodiment of this invention. It is a perspective view which shows the whole structure of the circulation apparatus main body of FIG. It is a top view which shows the state which isolate | separated the apparatus main body and the circulation unit in the circulation apparatus main body of FIG. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a perspective view which decomposes | disassembles and shows a part of filter holding member 14 of FIG. It is a top view of the 3rd case member of FIG. It is a disassembled side view which expands and shows the trap member of FIG. It is a block diagram which shows the electric constitution of the control part of FIG. It is side surface sectional drawing which shows the state which mounted | wore the patient with the insufflation gas circulation system which concerns on another embodiment of this invention. It is a schematic diagram which shows a prior art.

J1 abdominal wall 1 pneumoperitone gas circulation device 2 trocar (discharge side trocar)
3 trocar (suction side trocar)
4 Circulating device body 9 Circulating unit 10 Device body (main body member)
11 suction side tube 12 discharge side tube 14 filter holding member (holding member)
17 Trap member (trap means)
22 Thermocouple (detection means)
23 Heating wire (heating element)
28 Filter 29 Centrifugal Impeller 47 Motor 48 Probe 50 Control Unit 60 Temperature Setting Means 61 Temperature Output Means 62 Temperature Judgment Means 64 Power Supply 70 Pneumatic stomach Gas Circulation System

Claims (8)

A pair of trocars that can puncture the patient's abdominal wall can be connected to each other, and while being connected to each trocar, the gas can be sucked from one trocar and discharged from the other trocar through the filter. A possible insufflation gas circulation device,
A heating means for heating the gas so that the gas discharged from the other trocar has a temperature corresponding to the body temperature of the patient ;
A suction side tube having one end connected to the one trocar;
A discharge side tube having one end connected to the other trocar;
The other end of each of the suction side tube and the discharge side tube is connected and holding the filter, and
A blower for forming a gas flow for sucking gas from the suction side tube and discharging the gas from the discharge side tube through the filter;
The heating means is provided in at least one of the suction side tube and the discharge side tube, and includes a heating element that generates heat upon receipt of electric power, and a power source that supplies electric power to the heating element,
The insufflation gas circulation device further includes a main body member configured to be detachable from the holding member and provided with the power source, and the holding member is attached to the main body member so that the power source An insufflation gas circulation device characterized by being electrically connected to a heating element . A pair of trocars that can puncture the patient's abdominal wall can be connected to each other, and while being connected to each trocar, the gas can be sucked from one trocar and discharged from the other trocar through the filter. A possible insufflation gas circulation device,
Heating means for heating the gas so that the gas discharged from the other trocar has a temperature corresponding to the body temperature of the patient;
A suction side tube having one end connected to the one trocar;
A discharge side tube having one end connected to the other trocar;
The other end of each of the suction side tube and the discharge side tube is connected and holding the filter, and
A blower for forming a gas flow for sucking gas from the suction side tube and discharging the gas from the discharge side tube through the filter;
The holding member is configured to store the filter so that two chambers are formed inside the filter,
The air blowing means is provided in at least one of the two chambers, and is capable of forming a gas flow from one of the chambers to the other, and for rotating the impeller. A drive source,
The insufflation gas circulation device further includes a main body member configured to be detachable from the holding member and provided with the driving source, and the driving member is mounted by attaching the holding member to the main body member. An insufflation gas circulation device characterized in that an output shaft of a source and an input shaft of the impeller are rotatably meshed with each other. The insufflation gas circulator according to claim 1 or 2, wherein the heating means heats the gas in the discharge side tube.   The inhalation gas circulation device according to claim 3, wherein the suction side tube includes trap means capable of catching water droplets generated in the suction side tube.   The heating means controls the power supplied to the heating element so that the heating element that generates heat upon supply of power and the gas discharged from the other trocar has a temperature corresponding to the body temperature of the patient. The pneumoperitoneum gas circulation device according to any one of claims 1 to 4, further comprising: means.   The apparatus further comprises detection means for detecting the temperature of at least a part of the gas guided between the two trocars, and the control means controls power supplied to the heating element according to the temperature detected by the detection means. The pneumoperitoneum gas circulation device according to claim 5. The apparatus further comprises a suction side trocar connectable to the suction side tube and a discharge side trocar connectable to the discharge side tube, and the discharge side trocar is inserted into the patient's abdominal wall from the outside of the abdominal wall. An endoscope can be inserted into the abdominal cavity, and gas guided from the discharge side tube can be blown to the inserted endoscope. Item 7. The pneumoperitoneum gas circulation device according to any one of Items 1 to 6. A pneumoperitoneum gas circulation device according to any one of claims 1 to 7, and a pneumothorax device capable of introducing carbon dioxide gas into the abdominal cavity of a patient via the other trocar. And pneumoperitone gas circulation system.

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