CN219231050U - Pressure control system for pneumoperitoneum machine - Google Patents
Pressure control system for pneumoperitoneum machine Download PDFInfo
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- CN219231050U CN219231050U CN202221945383.6U CN202221945383U CN219231050U CN 219231050 U CN219231050 U CN 219231050U CN 202221945383 U CN202221945383 U CN 202221945383U CN 219231050 U CN219231050 U CN 219231050U
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Abstract
The utility model discloses a pressure control system for a pneumoperitoneum machine, which comprises: the air inlet of the air storage heating device is communicated with the air outlet of the air source device, and the air outlet of the air storage heating device is communicated with the electromagnetic directional valve; the switch valve is arranged between the gas storage heating device and the gas source device; the proportional valve is arranged between the gas storage heating device and the electromagnetic reversing valve; the first pressure sensor is connected with the air outlet of the air storage heating device; the second pressure sensor is connected with the first air outlet of the electromagnetic directional valve; the third pressure sensor is connected with the second air outlet of the electromagnetic directional valve; and a control device.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a temperature control system for a pneumoperitoneum machine.
Background
Pneumoperitoneum machine is the main equipment for artificial pneumoperitoneum. By CO 2 Pneumoperitoneum machine can pour medical CO into abdominal cavity 2 The abdominal wall and the abdominal organs are separated by the gas to form a surgical operation space, and when the pressure reaches the preset pressure, the air inlet can be automatically stopped, and a certain amount of gas is maintained to keep the pressure in the abdominal cavity at the preset pressure all the time. Because the cutting equipment such as an electrotome is used in the operation process, smoke which can influence the visual field can be generated in a short time, the existing pneumoperitoneum machine is internally provided with the air pump after the smoke is generated in the abdominal cavityAnd the smoke in the abdominal cavity is discharged by the air pump, filtered and recycled to the air inlet. However, in actual use, the suction of the air pump is uneven to bring impact force to the air inlet channel, so that the pressure detection is affected, and uneven pressure in the abdomen is easily caused by uneven suction, so that the operation of doctors and the progress of operations are affected.
Disclosure of Invention
In order to solve at least one technical problem in the prior art, the embodiment of the utility model provides a temperature control system for a pneumoperitoneum machine. The technical proposal is as follows:
a pressure control system for a pneumoperitoneum machine, comprising:
the gas storage heating device, gas storage heating device is formed with the gas receiver, be equipped with the heating piece in the gas receiver, gas storage heating device's air inlet and the gas outlet intercommunication of air supply device, gas storage heating device's gas outlet and electromagnetic reversing valve intercommunication, the electromagnetic reversing valve includes: the first air outlet of the electromagnetic reversing valve is communicated with the pneumoperitoneum needle, and the second air outlet of the electromagnetic reversing valve is communicated with the puncture outfit and the circulating air pump;
the switch valve is arranged between the gas storage heating device and the gas source device;
the proportional valve is arranged between the gas storage heating device and the electromagnetic reversing valve;
the first pressure sensor is connected with the air outlet of the air storage heating device;
the second pressure sensor is connected with the first air outlet of the electromagnetic directional valve;
the third pressure sensor is connected with the second air outlet of the electromagnetic directional valve;
the control device is connected with the gas storage heating device, the switch valve, the electromagnetic reversing valve, the proportional valve, the first pressure sensor, the second pressure sensor and the third pressure sensor, and is suitable for controlling the switch valve and the proportional valve according to pressure signals detected by the first pressure sensor and the second pressure sensor or controlling the switch valve and the proportional valve according to pressure signals detected by the first pressure sensor and the third pressure sensor.
Further, a fourth pressure sensor is connected between the air inlet of the air storage heating device and the air outlet of the air source device;
and a pressure reducing device is arranged between the gas storage heating device and the gas source device.
Further, the gas storage heating device is also communicated with a first air release valve, and the first air release valve is connected with the control device;
a second air release valve is arranged between the proportional valve and the electromagnetic reversing valve, and the second air release valve is connected with the control device.
Further, a first filtering device is connected between the air inlet of the air storage heating device and the air outlet of the air source device.
Further, the first filtering device includes: copper powder sinters the filter element.
Further, the puncture outfit is formed with air inlet channel, exhaust gas channel, pressure measurement passageway, exhaust gas channel's air inlet with the second gas outlet intercommunication of electromagnetic directional valve, exhaust gas channel's gas outlet with the circulation air pump intercommunication.
Further, a second filtering device is communicated between the smoke exhaust channel and the circulating air pump.
Further, the pressure measuring channel is respectively provided with a safety air valve and a fifth pressure sensor, and the fifth pressure sensor and the safety air valve are connected with the control device.
Further, the filter cartridge of the second filter device includes: PTFE microporous membrane filtering layer, PTFE microporous membrane filtering layer periphery is equipped with the active carbon layer.
Further, a one-way valve is arranged between the second filtering device and the circulating air pump, a sixth pressure sensor is arranged between the one-way valve and the circulating air pump, and the sixth pressure sensor is connected with the control device.
The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:
1. the pressure control system disclosed by the embodiment of the utility model is characterized in that the pressure sensors are arranged at a plurality of positions of the pneumoperitoneum machine, so that the pressure can be conveniently controlled, and the stability of the air pressure is maintained;
3. the pressure control system disclosed by the embodiment of the utility model adopts the air pressure control of the proportional valve and the switch valve air inlet pneumoperitoneum machine, can effectively control the air pressure in the abdominal cavity of a patient, and ensures uniform pressure control.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a temperature control system of a pneumoperitoneum machine provided by an embodiment of the present utility model;
FIG. 2 is a schematic view of a pressure relief device according to an embodiment of the present utility model;
fig. 3 is a schematic view of the channel arrangement of the puncture outfit according to the embodiment of the present utility model.
In the figure:
1, an air source device; 2 pneumoperitoneum needle; 3, a puncture outfit; 4, an electromagnetic reversing valve; 5 a control device; a circulating air pump; 7, a first filtering device; 8 a second filtering device; 9 a first auxiliary controller; a second auxiliary controller;
101 a gas storage heating device; 102 a first temperature sensor; 103 a second temperature sensor; 104 a third temperature sensor; a fourth temperature sensor 105; 106 a pressure relief device; 107 switching a valve; 108 proportional valve; 109 a first bleed valve; 110 a second bleed valve; 111 safety air valve; 112 a one-way valve; 113 a first pressure sensor; 114 a second pressure sensor; 115 a third pressure sensor; 116 a fourth pressure sensor; 117 a fifth pressure sensor; 118 a sixth pressure sensor; a display panel 119; upgrade port 120; an operation panel 121;
1061 solenoid valve; 1062 high pressure reducer; 1063 low pressure reducer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the embodiments of the present utility model, the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the expressions "first" and "second" are merely used for convenience of description, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.
In order to solve the problems of inconvenient pressure measurement, unstable pressure control, uneven pressure and the like of the existing pneumoperitoneum machine, the embodiment of the utility model discloses a pressure control system for the pneumoperitoneum machine, which comprises the following specific technical scheme:
as shown in fig. 1, a pneumoperitoneum machine pressure control system includes: the gas storage heating device 101, the switching valve 107, the proportional valve 108, the first pressure sensor 113, the second pressure sensor 114, the third pressure sensor 115, and the control device 5. Wherein, gas storage heating device 101 is used for heating gas, includes: an air storage chamber and a heating element. The air storage chamber of the air storage heating device 101 is respectively communicated with the air inlet of the air storage heating device 101 and the air outlet of the air storage heating device 101. The air inlet of the air storage heating device 101 is communicated with the air outlet of the air source device 1, and the air source device 1 is used for generating and providing air for the pneumoperitoneum machine. The switch valve 107 is disposed between the gas storage heating device 101 and the gas source device 1, and is used for controlling the pressure of the gas entering the gas storage heating device 101. The gas outlet of the gas storage heating device 101 is communicated with the gas inlet of the electromagnetic reversing valve 4, and the electromagnetic reversing valve 4 is used for conveying the gas output by the gas storage heating device 101 to the pneumoperitoneum needle 2 or the puncture outfit 3. A proportional valve 108 is arranged between the gas storage heating device 101 and the electromagnetic directional valve 4 and is used for controlling the pressure of gas entering the electromagnetic directional valve 4. The electromagnetic directional valve 4 includes: a first air outlet and a second air outlet. In general, the pneumoperitoneum machine includes two working modes, one is a working mode operated by the pneumoperitoneum needle 2, the other is a working mode operated by the puncture outfit 3, the electromagnetic directional valve 4 is used for switching the two working modes of the pneumoperitoneum machine by the pneumoperitoneum needle 2 or the puncture outfit 3, wherein a first air outlet of the electromagnetic directional valve 4 is communicated with the pneumoperitoneum needle 2, and a second air outlet of the electromagnetic directional valve 4 is communicated with the puncture outfit 3. A circulating air pump 6 is also communicated between the second air outlet and the puncture outfit 3, and the circulating air pump 6 is used for circulating the puncture outfit 3 sucked out between the air storage heating device 101 and the puncture outfit 3. The first pressure sensor 113 is disposed at the air outlet of the air storage heating device 101, and is used for detecting the air outlet pressure of the air storage heating device 101. The second pressure sensor 114 is disposed at the first air outlet of the electromagnetic directional valve 4, and is configured to detect an air outlet pressure of the electromagnetic directional valve 4 at the first air outlet. The third pressure sensor 115 is disposed at the second air outlet of the electromagnetic directional valve 4, and is configured to detect an air outlet pressure of the electromagnetic directional valve 4 at the second air outlet. The control device 5 is connected with the gas storage heating device 101, the switch valve 107, the proportional valve 108, the first pressure sensor 113, the second pressure sensor 114, the third pressure sensor 115 and the electromagnetic directional valve 4. When the pneumoperitoneum machine is in the working mode of the pneumoperitoneum needle 2, the control device 5 receives pressure signals of the first pressure sensor 113 and the second pressure sensor 114, and generates control instructions according to the pressure signals to send a finger switch valve 107 and a proportional valve 108; when the pneumoperitoneum machine is in the puncture outfit 3 working mode, the control device 5 receives the pressure signals of the first pressure sensor 113 and the third pressure sensor 115 and forms a control command sending finger switch valve 107 and a proportional valve 108.
The gas source device 1 may be CO 2 And (5) an air source. The pneumoperitoneum needle 2 and the puncture device 3 are both operation devices applied to the abdominal cavity of the patient. The air storage chamber of the air storage heating device 101 is mainly used for circulating or storing air, and the air in the air storage chamber can be provided by the air source device 1Or the circulating gas from the puncture outfit 3 to the circulating air pump 6. The heating element can be arranged in the gas storage chamber partially or completely. The heating element may be a resistive heating element or an inductive heating element, etc. The control device 5 may generate a control command for controlling the opening and closing or opening degree of the on-off valve 107 and the proportional valve 108 based on the first pressure sensor 113 and the second pressure sensor 114 or based on the first pressure sensor 113 and the third pressure sensor 115.
In one embodiment, a fourth pressure sensor 116 is connected between the air inlet of the air storage heating device 101 and the air outlet of the air source device 1. The fourth pressure sensor 116 is used to detect the pressure of the gas entering the gas storage heating device 101. A pressure reducing device 106 is arranged between the gas storage heating device 101 and the gas source device 1, and the pressure reducing device 106 is used for reducing the pressure of gas entering the gas storage heating device 101.
As an example, as shown in fig. 2, the pressure reducing device 106 includes: the electromagnetic valve 1061, the high-pressure reducer 1062, and the low-pressure reducer 1063, the electromagnetic valve 1061 is connected to the high-pressure reducer 1062 and the low-pressure reducer 1063, and the high-pressure reducer 1062 is connected to the low-pressure reducer 1063.
In one embodiment, the air storage heating device 101 is also in communication with a first air release valve 109, the first air release valve 109 being connected to the control device 5. The first air release valve 109 is used for controlling the air pressure in the air storage heating device 101, and the control device 5 controls the first air release valve 109 according to the pressure signal of the first pressure sensor 113. A second air release valve 110 is arranged between the proportional valve 108 and the electromagnetic directional valve 4, and the second air release valve 110 is connected with the control device 5. The proportional valve 108 is used for controlling the air pressure entering the two air outlets of the electromagnetic directional valve 4, and the control device 5 controls the proportional valve 108 according to the first pressure sensor 113 and the second pressure sensor 114 or the first pressure sensor 113 and the third pressure sensor 115.
In one embodiment, the first filtering device 7 is connected between the air inlet of the air storage heating device 101 and the air outlet of the air source device 1. Further, the first filtering means 7 comprises: copper powder sinters the filter element. The detachable copper powder sintering filter element is arranged in the middle of the first filtering device 7, so that tiny particles and impurities in the gas can be filtered.
In one embodiment, as shown in fig. 3, the puncture outfit 3 forms an air inlet channel, a smoke discharging channel and a pressure measuring channel, the air inlet of the smoke discharging channel is communicated with the second air outlet of the electromagnetic directional valve 4, and the air outlet of the smoke discharging channel is communicated with the circulating air pump 6.
In one embodiment, a second filter device 8 is in communication between the smoke evacuation channel and the circulation pump 6. The second filter means 8 is used to filter impurities in the smoke drawn from the patient's abdominal cavity.
In one embodiment, the filter cartridge of the second filter device 8 comprises: PTFE microporous membrane filtering layer, PTFE microporous membrane filtering layer periphery is equipped with the active carbon layer. As described above, the activated carbon can filter fine particles in the smoke and remove scorched particles generated by cutting, and the PTFE film can filter fine particles in the smoke.
In one embodiment, a one-way valve 112 is arranged between the second filter device 8 and the circulation pump 6, a sixth pressure sensor 118 is arranged between the one-way valve 112 and the circulation pump 6, and the sixth pressure sensor 118 is connected with the control device 5. The sixth pressure sensor 118 is used to detect the pressure of the gas entering the circulation pump 6.
In one embodiment, the pressure measuring channel is provided with a safety gas valve 111 and a fifth pressure sensor 117, respectively, the fifth pressure sensor 117 and the safety gas valve 111 being connected to the control device 5. The fifth pressure sensor 117 is used to detect the air pressure in the pressure measuring channel.
The above, various embodiments of the present disclosure may be combined by selecting one or more of them as needed. The temperature control system disclosed by the utility model is specifically described below in connection with a specific pneumoperitoneum machine application:
as shown in fig. 1, a pneumoperitoneum machine includes a temperature control system for a pneumoperitoneum machine disclosed in the embodiment of the present utility model, and the specific structure is as follows:
pneumoperitoneum machine, comprising: a temperature control system, a pressure control system, a pneumoperitoneum needle 2 and a puncture outfit 3. The air inlet of the pneumoperitoneum machine is communicated with the air source device 1, and the air outlet of the pneumoperitoneum machine is communicated with the pneumoperitoneum needle 2 and the puncture outfit 3 through the electromagnetic directional valve 4. The pneumoperitoneum needle 2 is mainly used for inflating the abdominal cavity of a patient, and the puncture outfit 3 is mainly used for inflating the abdominal cavity of the patient and sucking smoke in the abdominal cavity of the patient. The puncture outfit 3 is provided with an air inlet channel, a smoke discharging channel and a pressure measuring channel, the air inlet of the smoke discharging channel is communicated with the second air outlet of the electromagnetic directional valve 4, and the air outlet of the smoke discharging channel is communicated with the circulating air pump 6. The temperature control system and the pressure control system respectively comprise a temperature controller and a pressure controller which are integrated on the same control device 5, in addition, the control device 5 also comprises a mode switching controller, the mode switching controller is connected with the electromagnetic directional valve 4, the electromagnetic directional valve 4 comprises a first air outlet communicated with the pneumoperitoneum needle 2 and a second air outlet communicated with the puncture outfit 3, and the mode switching controller is used for controlling the opening and closing of the first air outlet or the second air outlet of the electromagnetic directional valve 4 so as to switch the working mode of the pneumoperitoneum machine. The circulation air pump 6 is connected with the control device 5 through a first auxiliary controller 9. The control device 5 is connected to a display panel 119, and the display panel 119 is connected to an upgrade port 120 and an operation panel 121.
The air inlet of the pneumoperitoneum machine is communicated with a first filtering device 7 for filtering impurities of the gas generated by the gas source device 1. The first filter means 7 may in particular comprise a filter cartridge sintered from copper powder. A second filtering device 8 is communicated between the air outlet of the pneumoperitoneum machine and the circulating air pump 6 and is used for filtering the impurities of the circulating gas sucked by the puncture outfit 3. The second filter means 8 may in particular be provided with a filter cartridge comprising a microporous membrane filter layer of PTFE.
The temperature control system includes, in addition to the temperature controller: a gas storage heating device 101, a first temperature sensor 102, a second temperature sensor 103, a third temperature sensor 104, and a fourth temperature sensor 105. Wherein the gas storage heating device 101 is communicated between the first filtering device 7 and the electromagnetic directional valve 4 and is used for heating the gas. The first temperature sensor 102 is disposed at the gas outlet of the gas storage heating device 101, and is used for detecting the temperature of the gas flowing out of the gas storage heating device 101. The second temperature sensor 103 is provided at the first air outlet of the electromagnetic directional valve 4 for detecting the temperature of the gas flowing to the pneumoperitoneum needle 2. The third temperature sensor 104 is disposed at the second air outlet of the electromagnetic directional valve 4, and is configured to detect the temperature of the air flowing to the puncture outfit 3. The fourth temperature sensor 105 is provided at the gas inlet of the gas storage heating device 101 for detecting the temperature of the gas flowing into the gas storage heating device 101. The air paths of the pneumoperitoneum machine are connected through heat preservation pipes with the same mass, pipe thickness and density, so that the heat preservation effect of the pneumoperitoneum machine is ensured.
The pressure control system comprises a pressure controller and also comprises a pressure control device connected with the pressure controller: the pressure relief device 106, the switch valve 107, the proportional valve 108, the first relief valve 109, the second relief valve 110, the safety valve 111, the check valve 112, and the first pressure sensor 113, the second pressure sensor 114, the third pressure sensor 115, the fourth pressure sensor 116, the fifth pressure sensor 117, and the sixth pressure sensor 118, wherein the proportional valve 108 is connected to the pressure controller through the second auxiliary controller 10. The switch valve 107 is disposed at the gas inlet of the gas storage heating device 101, and is used for adjusting the flow rate of the gas entering the gas storage heating device 101. The proportional valve 108 is disposed at the gas outlet of the gas storage heating device 101, and is used for controlling the gas outflow of the gas storage heating device 101. The pressure reducing device 106 is provided between the filtering device and the switch valve 107 for adjusting the pressure of the gas entering the gas storage heating device 101. The first air release valve 109 is connected with the air storage heating device 101 for releasing air of the air storage heating device 101, and the second air release valve 110 is connected with the proportional valve 108 for releasing air of the proportional valve 108. The safety air valve 111 is communicated with the pressure measuring channel of the puncture outfit 3 and is used for adjusting the pressure of the puncture outfit 3. The check valve 112 is disposed between the second filtering device 8 and the circulating air pump 6, and is used for adjusting the air flow of the circulating air pump 6. The first pressure sensor 113 is disposed at the air outlet of the air storage heating device 101, specifically disposed at the air outlet of the second air storage channel, and is used for detecting the air storage pressure of the second air storage channel. The second pressure sensor 114 is disposed at the first air outlet of the electromagnetic directional valve 4, and is used for detecting the pressure of the air flowing to the pneumoperitoneum needle 2. The third pressure sensor 115 is disposed at the second air outlet of the electromagnetic directional valve 4, and is used for detecting the pressure of the air flowing to the puncture outfit 3. The fourth pressure sensor 116 is disposed at an air inlet of the pneumoperitoneum machine for detecting an intake pressure. The fifth pressure sensor 117 is disposed at the pressure measuring channel of the puncture outfit 3, and is used for detecting the air pressure of the puncture outfit 3. A sixth pressure sensor 118 is provided at the air outlet of the check valve 112 for detecting the pressure of the gas flowing into the circulation pump 6.
Pressure control principle of pressure control system of pneumoperitoneum machine:
when the first air outlet of the electromagnetic directional valve 4 is opened and the second air outlet is closed, namely, the pneumoperitoneum machine is in the working mode of the pneumoperitoneum needle 2. The first pressure sensor 113 detects the pressure in the second gas storage channel as P 1 The second pressure sensor 114 measures the first outlet pressure as P 2 Setting the pressure of the pre-inflated abdominal cavity as P Pre-preparation The switch valve 107 is opened, the proportional valve 108 is closed, and when P 1 ＝P Pre-preparation When the proportional valve 108 is opened, the pneumoperitoneum machine is inflated into the patient's pneumoperitoneum at a constant pressure and flow rate, when P 2 ＝P Pre-preparation The pneumoperitoneum establishment is judged to be completed, and the on-off valve 107 is closed. Illustratively, the switch valve 107 is set to open for 3s, and closed for 1s for pressure measurement data feedback, P 1 ＜P Pre-preparation When the proportional valve 108 is in the closed state, the second gas storage channel is inflated first, and when P is detected 2 ＞P Pre-preparation When the first air release valve 109 is opened, the pressure in the second air storage channel is always equal to the pressure P of the pre-inflated abdominal cavity during the operation of the pneumoperitoneum machine Pre-preparation CO is caused to 2 Can be inflated into human pneumoperitoneum in a stable state. When P 2 ＞P Pre-preparation When the second bleed valve 110 is open.
When the second air outlet of the electromagnetic directional valve 4 is opened, the first air outlet is closed, namely, the pneumoperitoneum machine is in the working mode of the puncture outfit 3. The first pressure sensor 113 detects the pressure in the second gas storage channel as P 1 The third pressure sensor 115 measures the second outlet pressure as P 3 The fifth pressure sensor 117 measures the abdominal pressure of the human body as P 5 Setting the pressure of the pre-inflated abdominal cavity as P Pre-preparation After starting up, the switch valve 107 is opened, the proportional valve 108 and the air pump are closed, when P 1 ＝P Pre-preparation When the proportional valve 108 and the air pump are opened, the pneumoperitoneum machine charges the pneumoperitoneum of the patient with constant pressure and flow, and when P 3 ＝P 5 ＝P Pre-preparation The establishment of the circulation pneumoperitoneum is judged to be completed, at this time, the switch valve 107 is closed, and the proportional valve 108 and the air pump continuously operate. When P 5 ＞P Pre-preparation At this time, the safety valve 111 is opened.
The following provides a complete description of the operation mode of the pneumoperitoneum machine:
after the pneumoperitoneum machine is started, the system can perform self-check for tens of seconds, at the moment, the switch valve 107 is opened, the gas sequentially passes through the first filtering device 7, the pressure reducing device 106, the switch valve 107 and the gas storage heating device 101, at the moment, the first gas release valve 109 is opened for a plurality of seconds, and after the air in the gas pipe is discharged, the first gas release valve 109 is in a closed state. The air release opening of the first air release valve 109 is provided with a silencer. After the air inlet source is stable, the working mode, the preset pressure, the air inlet flow and the temperature of the pneumoperitoneum machine can be set through the operation panel.
In the first state of the working mode, the electromagnetic directional valve 4 opens the first air outlet, the air starts to charge the pneumoperitoneum of the human body through the pneumoperitoneum needle 2, the air inlet flow parameter is controlled by controlling the opening degree of the proportional valve 108, the second pressure sensor 114 detects the pressure of the pneumoperitoneum of the human body and feeds back a signal to the control main board, and the control main board controls the opening and closing states of the proportional valve 108 through the current value of the second controller. When the human pneumoperitoneum pressure is less than the preset pressure, the proportional valve 108 is in an open state. When the human pneumoperitoneum pressure is greater than the preset pressure, the proportional valve 108 is closed, and the second air release valve 110 is opened to reduce the human pneumoperitoneum pressure. When the human pneumoperitoneum pressure is equal to the preset pressure, the proportional valve 108 is in a closed state. The second temperature sensor 103 detects the temperature of the first air outlet and feeds back a signal to the control main board, and the control device 5 adjusts the on-off state of the heating rod by internally calculating the electric signals fed back by the first temperature sensor 102 and the fourth temperature sensor 105 to control the temperature of the air storage heating device 101.
In the second working mode, the electromagnetic directional valve 4 opens the second air outlet, the air starts to inflate the pneumoperitoneum of the human body through the puncture outfit 3, at the moment, the smoke discharging device is started simultaneously, the control device 5 controls the air inlet flow parameter by controlling the opening of the proportional valve 108, the control main board adjusts the working state of the air pump by controlling the current of the first auxiliary controller 9, and the air pump is a speed-adjustable peristaltic pump. The air source enters the pneumoperitoneum of the human body through an air inlet channel after passing through the pneumoperitoneum machine, a pressure measuring channel is connected with a fifth pressure sensor 117 and a safety air valve 111, and a smoke discharging channel is connected with a sixth pressure sensor 118 and a second filtering device 8. The rear end of the second filtering device 8 is provided with a one-way valve 112, the gas filtered by the second filtering device 8 enters the second gas storage channel, and the gas enters the gas channel in series through the gas outlet of the first gas storage channel and the gas outlet of the second gas storage channel, so that the smoke filtration and the gas circulation in the operation process are realized, the harm of the smoke in the operation process to medical staff is avoided, and the use amount of the gas is reduced.
The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:
1. the pressure control system disclosed by the embodiment of the utility model is characterized in that the pressure sensors are arranged at a plurality of positions of the pneumoperitoneum machine, so that the pressure can be conveniently controlled, and the stability of the air pressure is maintained;
3. the pressure control system disclosed by the embodiment of the utility model adopts the air pressure control of the air inlet pneumoperitoneum machine of the proportional valve 108 and the switch valve 107, can effectively control the air pressure in the abdominal cavity of a patient, and ensures uniform pressure control.
The foregoing has described in detail the technical solutions provided herein, and specific examples have been used herein to illustrate the principles and embodiments of the present application, the above examples being provided only to assist in understanding the methods of the present application and their core ideas; also, as will occur to those of ordinary skill in the art, many modifications are possible in view of the teachings of the present application, both in the detailed description and the scope of its applications. In view of the foregoing, this description should not be construed as limiting the application.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A pressure control system for a pneumoperitoneum machine, comprising:
the gas storage heating device, gas storage heating device is formed with the gas receiver, be equipped with the heating piece in the gas receiver, gas storage heating device's air inlet and the gas outlet intercommunication of air supply device, gas storage heating device's gas outlet and electromagnetic reversing valve intercommunication, the electromagnetic reversing valve includes: the first air outlet of the electromagnetic reversing valve is communicated with the pneumoperitoneum needle, and the second air outlet of the electromagnetic reversing valve is communicated with the puncture outfit and the circulating air pump;
the switch valve is arranged between the gas storage heating device and the gas source device;
the proportional valve is arranged between the gas storage heating device and the electromagnetic reversing valve;
the first pressure sensor is connected with the air outlet of the air storage heating device;
the second pressure sensor is connected with the first air outlet of the electromagnetic directional valve;
the third pressure sensor is connected with the second air outlet of the electromagnetic directional valve;
the control device is connected with the gas storage heating device, the switch valve, the electromagnetic reversing valve, the proportional valve, the first pressure sensor, the second pressure sensor and the third pressure sensor, and is suitable for controlling the switch valve and the proportional valve according to pressure signals detected by the first pressure sensor and the second pressure sensor or controlling the switch valve and the proportional valve according to pressure signals detected by the first pressure sensor and the third pressure sensor.
2. The pressure control system as claimed in claim 1 wherein a fourth pressure sensor is connected between the air inlet of the air storage heating device and the air outlet of the air source device;
and a pressure reducing device is arranged between the gas storage heating device and the gas source device.
3. The pressure control system of claim 1, wherein the gas storage heating device is further in communication with a first bleed valve, the first bleed valve being connected to the control device;
a second air release valve is arranged between the proportional valve and the electromagnetic reversing valve, and the second air release valve is connected with the control device.
4. A pressure control system as claimed in any one of claims 1 to 3 wherein a first filter means is connected between the air inlet of the air storage heating means and the air outlet of the air supply means.
5. The pressure control system of claim 4, wherein the first filtering means comprises: copper powder sinters the filter element.
6. A pressure control system according to any one of claims 1 to 3, wherein the puncture outfit is formed with an air inlet channel, a smoke exhaust channel and a pressure measuring channel, an air inlet of the smoke exhaust channel is communicated with a second air outlet of the electromagnetic directional valve, and an air outlet of the smoke exhaust channel is communicated with the circulating air pump.
7. The pressure control system of claim 6, wherein a second filter is in communication with said smoke evacuation channel between said circulation pumps.
8. The pressure control system of claim 6, wherein the pressure measuring channel is provided with a safety air valve and a fifth pressure sensor, respectively, both of which are connected to the control device.
9. The pressure control system of claim 7, wherein the filter cartridge of the second filter device comprises: PTFE microporous membrane filtering layer, PTFE microporous membrane filtering layer periphery is equipped with the active carbon layer.
10. The pressure control system of claim 7, wherein a one-way valve is disposed between the second filter device and the circulation pump, and a sixth pressure sensor is disposed between the one-way valve and the circulation pump, and the sixth pressure sensor is connected to the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221945383.6U CN219231050U (en) | 2022-07-26 | 2022-07-26 | Pressure control system for pneumoperitoneum machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221945383.6U CN219231050U (en) | 2022-07-26 | 2022-07-26 | Pressure control system for pneumoperitoneum machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219231050U true CN219231050U (en) | 2023-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221945383.6U Active CN219231050U (en) | 2022-07-26 | 2022-07-26 | Pressure control system for pneumoperitoneum machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219231050U (en) |
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2022
- 2022-07-26 CN CN202221945383.6U patent/CN219231050U/en active Active
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