Liquid backflow detection device and pneumoperitoneum machine

Abstract

The utility model relates to the technical field of medical instruments, and discloses a liquid backflow detection device and a pneumoperitoneum machine, the liquid backflow detection device comprises a body and two electrode plates, the body is hollow and forms a conveying cavity, one end of the body is an inlet, the other end of the body is an outlet, and the two electrode plates are installed on the body. The electrode plates are arranged in the conveying cavity, at least parts of the electrode plates are located in the conveying cavity, the electrode plates penetrate through the conveying cavity, the parts, located in the conveying cavity, of the two electrode plates are arranged in a spaced mode, and the two electrode plates are connected with the detection circuit. When the pneumoperitoneum machine is used, the two electrode plates are in contact with the two electrode plates penetrating through the conveying cavity, so that the two electrode plates are conducted, a conduction signal can be timely conveyed to the detection circuit to send out an alarm signal, medical personnel are reminded to timely adjust the pneumoperitoneum machine, pollution to the interior of the pneumoperitoneum machine is avoided, and the pneumoperitoneum machine has the advantages of being simple in structure and accurate in detection effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to liquid backflow detection device and pneumoperitoneum machine. BACKGROUND

[0002] The pneumoperitoneum machine is the equipment of laparoscopic surgery establishment and maintaining gas cavity, and the pneumoperitoneum machine injects medical carbon dioxide to the abdomen of patient through the pneumoperitoneum tube, so that the abdominal wall and the organ of patient are separated, and enough operating space and visual field are provided for laparoscopic surgery.

[0003] The pneumoperitoneum machine usually has overpressure release function, that is, when detecting that the abdominal cavity pressure exceeds the preset pressure, the pneumoperitoneum machine will automatically open the internal exhaust valve, and the gas in the abdominal cavity flows reversely through the pneumoperitoneum tube to reduce the pressure in the abdominal cavity. During the backflow of the gas in the abdominal cavity, the blood, body fluid and physiological saline of patient in the abdominal cavity will flow back to the interior of the pneumoperitoneum machine along with the gas, thereby causing the interior of the pneumoperitoneum machine to be contaminated. In order to prevent the interior of the pneumoperitoneum machine from being contaminated and to avoid cross infection of the patient, the pneumoperitoneum machine needs to be provided with a liquid backflow detection device for timely detecting the state of liquid backflow and sending an alarm to remind medical staff to adjust the equipment.

[0004] In the related art, as shown in Figure 1 and Figure 2 , the liquid backflow detection device on the pneumoperitoneum machine usually has two wires arranged in parallel along the axial direction in the inner wall of the tubular structure 1a, and the two wires are located on both sides of the inner wall of the tubular structure 1a. When the liquid 3a in the abdominal cavity of the patient flows back to the interior of the liquid backflow detection device along with the gas, the liquid 3a will conduct the two wires 2a, so that the impedance between the two wires 2a decreases rapidly, and an alarm is sent to remind medical staff. However, when the amount of backflow liquid 3a is small, the liquid 3a is only located in the lower half of the tubular inner wall, and cannot conduct the wire 2a located above the inner wall of the tubular structure 1a, so that the medical staff cannot be reminded by the alarm, and the liquid 3a flows back to the interior of the pneumoperitoneum machine, causing the interior of the pneumoperitoneum machine to be contaminated. SUMMARY

[0005] Therefore, the utility model provides a liquid backflow detection device and a pneumoperitoneum machine to solve the problem that the structure of two wires arranged in parallel along the axial direction of the tubular inner wall in the liquid backflow detection device of the related art easily causes the interior of the pneumoperitoneum machine to be contaminated.

[0006] The utility model provides a kind of liquid backflow detection device, including body and two electrode sheets, body is hollow and forms delivery cavity inside, delivery cavity is used to transport medium, one end of body is inlet, the other end of body is outlet, two electrode sheets are installed on body, and at least part of electrode sheet is located in delivery cavity, electrode sheet penetrates delivery cavity, and two electrode sheets are located in the part interval arrangement in delivery cavity, two electrode sheets are connected with detection circuit respectively.

[0007] Beneficial effects: the utility model discloses two electrode sheets penetrate delivery cavity, when the liquid in gas abdominal tube backflows to delivery cavity from inlet, no matter the liquid flow size backflows to delivery cavity, will contact two electrode sheets, to make two electrode sheets conductive, and then can timely deliver conductive signal to detection circuit and send alarm signal, remind medical staff to adjust gas abdominal machine equipment in time, avoid to cause pollution to gas abdominal machine inside, with the advantages of simple structure, accurate detection effect.

[0008] In an alternative embodiment, the electrode sheet includes a detection hole coaxially arranged with the delivery cavity, and the inner diameter of the detection hole is not greater than the inner diameter of the delivery cavity.

[0009] Beneficial effects: in the utility model, the inner diameter of the detection hole is set to be not greater than the inner diameter of the delivery cavity, when the liquid flows through the detection hole from the delivery cavity, the liquid can ensure that the two electrode sheets at the two detection holes are conductive, and then the conductive signal can be delivered to the detection circuit to send an alarm signal, reminding medical staff to adjust the gas abdominal machine equipment in time, avoiding pollution to the gas abdominal machine inside, and having the advantages of accurate detection effect.

[0010] In an alternative embodiment, the electrode sheet further includes a glue filling hole, and the glue filling hole is distributed at a peripheral position of the detection hole.

[0011] Beneficial effects: the utility model discloses a glue filling hole, which can increase the contact area between the electrode sheet and the body, make the electrode sheet and the body more firmly connected, and increase the sealing property between the electrode sheet and the body, reduce the risk of leakage.

[0012] In an alternative embodiment, the electrode sheet further includes a connection terminal, and the connection terminal is arranged at an edge position of the electrode sheet and extends out of the outer wall of the body.

[0013] Beneficial effects: the utility model discloses that one end of the connection terminal extends out of the outer wall of the body, which facilitates the connection of the connection terminal and the detection circuit, and improves the convenience in use.

[0014] In an alternative embodiment, the end of the connection terminal away from the body is provided with a mounting hole for connecting with the detection circuit.

[0015] Beneficial effect: the utility model discloses the installation hole is set up on the connecting terminal, can connect the connecting end of detection circuit with installation hole firmly, thereby make detection circuit and connecting terminal connect more firmly.

[0016] In an alternative embodiment, the body is provided with a mounting portion between the inlet and the outlet, and the electrode sheet is arranged in the mounting portion, and the mounting portion protrudes from the outer wall of the body.

[0017] In an alternative embodiment, the body is provided with a mounting portion between the inlet and the outlet, and the electrode sheet is arranged in the mounting portion, and the mounting portion protrudes from the outer wall of the body.

[0018] In an alternative embodiment, the outer diameter of the plug-in portion gradually increases from the inlet to the mounting portion, and a limiting portion is formed between the side of the plug-in portion away from the inlet and the body.

[0019] Beneficial effect: in the utility model, the outer diameter of the plug-in portion gradually increases from the inlet to the mounting portion, so that the outer wall of the plug-in portion forms a tapered slope, and when the liquid backflow detection device is installed in the main machine of the gas trocar, the connection of the inlet and the outlet with the pipeline in the main machine of the gas trocar can be ensured to be stable, and the plug-in portion can be prevented from loosening during use.

[0020] In the second aspect, the utility model provides a gas trocar, including host computer, gas abdominal tube and above-mentioned liquid backflow detection device, be equipped with the joint on the host computer, and the gas abdominal tube is detachably connected with the joint, and the liquid backflow detection device is arranged in the host computer interior.

[0021] In an alternative embodiment, the gas trocar further comprises a detection device, and the detection device is provided with a detection circuit, and the detection circuit is electrically connected with the electrode sheet.

[0022] Since the gas trocar adopts the liquid backflow detection device in the utility model, it has the same and effective effects as the liquid backflow detection device, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0024] Figure 1 It is the front view of the liquid backflow detection device in the prior art when the liquid fills the tubular structure;

[0025] Figure 2 It is the front view of the liquid backflow detection device in the prior art when the liquid is located at the bottom of the tubular structure;

[0026] Figure 3 It is a liquid backflow detection device front view of the utility model embodiment;

[0027] Figure 4 It is a structure diagram of electrode piece in the utility model embodiment's liquid backflow detection device;

[0028] Figure 5 It is a structure diagram of the internal structure of main machine in the utility model embodiment's gas insufflation machine.

[0029] Mark explanation:

[0030] Body-10;Transport cavity-100;Inlet-101;Outlet-102;Mounting portion-103;Plug portion-104;Limiting portion-105;

[0031] Electrode piece-2;Detection hole-201;Glue filling hole-202;Connection terminal-203;Mounting hole-204;

[0032] Main machine-3;Joint-301;Connection pipeline-302;

[0033] Detection device-4

[0034] Liquid backflow detection device-1.

[0035] Related technical mark explanation:

[0036] Tubular structure-1a;Guide wire-2a;Liquid-3a. Specific implementation

[0037] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0038] The embodiment of the utility model will be described below in conjunction with Figures 3 to 5 .

[0039] According to the embodiment of the utility model, on the one hand, as Figure 3As shown, a liquid backflow detection device 1 is provided, comprising a body 10 and two electrode sheets 2, the body 10 is hollow inside and forms a delivery cavity 100, the delivery cavity 100 is used for delivering medium, one end of the body 10 is an inlet 101, the other end of the body 10 is an outlet 102, the two electrode sheets 2 are installed on the body 10, and the indicating part of the electrode sheet 2 is located in the delivery cavity 100, the electrode sheet 2 penetrates through the delivery cavity 100, and the two electrode sheets 2 are spaced apart in the delivery cavity 100, and the two electrode sheets 2 are respectively connected with a detection circuit.

[0040] Specifically, as shown in the embodiment, the body 10 is in a tubular structure, the inside is a delivery cavity 100, and the two ends of the delivery cavity 100 are respectively an inlet 101 and an outlet 102, and the two electrode sheets 2 penetrate through the delivery cavity 100 and are arranged in the body 10, and in the embodiment, the two electrode sheets 2 are perpendicular to the axial direction of the delivery cavity 100, and in other embodiments, the two electrode sheets 2 can also be arranged in an inclined manner with respect to the axial direction of the delivery cavity 100, but the electrode sheet 2 should ensure that it penetrates through the entire cross section of the delivery cavity 100, so that when the liquid flows through the delivery cavity 100, no matter the size of the liquid flow, the two electrode sheets 2 can be contacted. Figure 3

[0041] In the embodiment, when the liquid backflow occurs in the gas-tight tube, the conductive liquid will conduct the two electrode sheets 2, so that the impedance between the two electrode sheets 2 is rapidly reduced, and the peripheral detection circuit can quickly capture the information of the liquid backflow and report it. Under the premise of meeting the process requirements, the smaller the interval between the two electrode sheets 2, the higher the sensitivity of the sensor in the detection circuit, that is, by changing the interval between the two electrode sheets 2, different sensitivity requirements can be met.

[0042] In the embodiment, the body 10 and the electrode sheet 2 can be integrally formed, the body 10 is injection molded by using engineering plastic with good insulation performance and strength, and the material of the body 10 can be PPS, PEI, PSU, PPSU, PEEK, etc. The electrode sheet 2 is punched from a metal sheet with good conductive performance, and the material of the electrode sheet 2 can be aluminum and its alloy, copper and its alloy, stainless steel, etc. In order to improve the bonding performance of the electrode sheet 2 and the body 10, the surface of the electrode sheet 2 can be subjected to sandblasting, plasma cleaning and other surface treatments.

[0043] In the embodiment, the medium is blood, body fluid, physiological saline and other conductive liquids backflowing into the delivery cavity 100 of the body 10 when the gas-tight machine performs surgery on the patient's abdominal cavity.

[0044] ​The utility model discloses a two electrode pieces 2 are penetrated to the conveying cavity 100, when the liquid in the pneumoperitoneum pipe is backflowed to the conveying cavity 100 from the inlet 101, no matter the liquid flow size backflowed to the conveying cavity 100, will contact two electrode pieces 2, thereby the conduction of two electrode pieces 2, and then can convey the signal to the detection circuit in time and send out the alarm signal, remind medical staff to adjust the pneumoperitoneum machine equipment in time, avoid the pollution to the pneumoperitoneum machine inside, have simple structure, the advantage that the detection effect is accurate.

[0045] In one embodiment, as shown in Figure 4 The electrode piece 2 includes a detection hole 201, and the detection hole 201 is coaxially arranged with the conveying cavity 100, and the inner diameter of the detection hole 201 is not greater than the inner diameter of the conveying cavity 100.

[0046] Specifically, in the embodiment, the detection hole 201 is coaxial with the conveying cavity 100 of the body 10, and the inner diameter of the detection hole 201 is the same as the inner diameter of the conveying cavity 100. When liquid backflow occurs, the hole wall of the detection hole 201 will be in contact with the liquid.

[0047] In other embodiments, under the condition of ensuring the flowability of the liquid in the conveying cavity 100, the inner diameter of the detection hole 201 can be slightly smaller than the inner diameter of the conveying cavity 100, that is, the edge of the detection hole 201 protrudes from the inner wall of the conveying cavity 100. However, the inner diameter of the detection hole 201 should not be too small, so as not to affect the flow of gas and liquid in the conveying cavity 100.

[0048] In the utility model, the inner diameter of the detection hole 201 is not greater than the inner diameter of the conveying cavity 100. When the liquid flows through the detection hole 201 from the conveying cavity 100, the liquid can conduct the two electrode pieces 2 at the two detection holes 201, and then the conduction signal can be transmitted to the detection circuit in time to send an alarm signal, reminding medical staff to adjust the pneumoperitoneum machine equipment in time, avoiding pollution to the pneumoperitoneum machine inside, and having the advantages of accurate detection effect.

[0049] In one embodiment, as shown in Figure 4 The electrode piece 2 also includes a glue filling hole 202, and the glue filling hole 202 is located at the outer periphery of the detection hole 201.

[0050] Specifically, in the embodiment, the plurality of glue filling holes 202 are annularly arranged at the outer periphery of the detection hole 201 and located in the body 10. The shape of the glue filling hole 202 is not limited in the embodiment and can be circular or other irregular shapes. When the electrode piece 2 is formed in the body 10, the insulating adhesive is injected into the glue filling hole 202, which is used to increase the bonding area between the electrode piece 2 and the body 10, make the bonding between the electrode piece 2 and the body 10 more firm, and at the same time, can prolong or block the leakage path of gas or liquid along the bonding seam between the electrode piece 2 and the body 10, and reduce the risk of leakage.

[0051] The utility model discloses a glue hole 202 can be set up, can increase the contact area between electrode piece 2 and the body 10, make electrode piece 2 and the body 10 connect more firm, increase the sealing property between electrode piece 2 and the body 10 simultaneously, reduce the risk of leakage.

[0052] In one embodiment, as shown in Figure 3 and Figure 4 The electrode piece 2 also includes a connecting terminal 203, which is arranged at the edge of the electrode piece 2 and extends out of the outer wall of the body 10.

[0053] Specifically, in this embodiment, the connecting terminal 203 is in the shape of a rectangle and is integrally formed with the electrode piece 2. Alternatively, a metal strip made of the same material as the electrode piece 2 can be welded at the edge of the electrode piece 2.

[0054] In this embodiment, as shown in Figure 3 The portions of the two connecting terminals 203 that extend out of the body 10 are away from each other, so as to avoid accidental contact between the connecting terminals 203 and cause the two electrode pieces 2 to be conductive.

[0055] In this embodiment, the end of the connecting terminal 203 that extends out of the outer wall of the body 10 is convenient for connecting the connecting terminal 203 with a detection circuit, thereby improving the convenience in use.

[0056] In one embodiment, as shown in Figure 4 The end of the connecting terminal 203 that is away from the body 10 is provided with a mounting hole 204 for connecting with the detection circuit.

[0057] Specifically, in this embodiment, the mounting hole 204 is connected with the connecting terminal on the detection circuit by means of a screw or a buckle.

[0058] In this embodiment, the mounting hole 204 is arranged on the connecting terminal 203, so that the connecting terminal of the detection circuit and the mounting hole 204 are stably connected, thereby making the connection between the detection circuit and the connecting terminal 203 more stable.

[0059] In one embodiment, as shown in Figure 3 The body 10 is provided with a mounting portion 103, which is located between the inlet 101 and the outlet 102. The electrode piece 2 is arranged in the mounting portion 103, and the mounting portion 103 protrudes out of the outer wall of the body 10.

[0060] Specifically, in the embodiment, the body 10 is in a cylindrical tube shape, the mounting portion 103 is located at a middle position of the body 10, the diameter of the mounting portion 103 is larger than the size of the outer wall of the body 10, the mounting portion 103 is in an outward convex cylindrical structure, used to provide more contact area with the electrode sheet 2, so that the electrode sheet 2 is more firmly installed in the body 10, the outer diameter of the mounting portion is larger than the outer diameter of the electrode sheet 2, so as to ensure that the electrode sheet 2 is completely covered in the mounting portion 103. In the embodiment, the electrode sheet 2 is inserted from the outside of one side of the mounting portion 103, and the electrode sheet 2 is inserted into the mounting portion 103 on the other side after passing through the conveying cavity 100.

[0061] In one embodiment, as shown in the drawings, the body 10 is provided with a plug-in portion 104 at each end, and the inlet 101 and the outlet 102 correspond to the plug-in portion 104. Figure 3

[0062] Specifically, in the embodiment, the plug-in portion 104 at each end of the body 10 is connected to the connecting pipeline 302 in the main machine 3 of the pneumoperitoneum machine, the diameter of the plug-in portion 104 is slightly larger than the outer diameter of the body 10, the connection is more stable, and the plug-in portion 104 is prevented from being separated from the connecting pipeline 302 in the main machine 3 due to vibration generated during operation of the pneumoperitoneum machine or pulling by an operator.

[0063] In one embodiment, as shown in the drawings, the diameter of the plug-in portion 104 gradually increases from the inlet 101 to the mounting portion 103, and a limiting portion 105 is formed between the side, away from the inlet 101, of the plug-in portion 104 and the body 10. Figure 3

[0064] Specifically, the diameter of the plug-in portion 104 gradually increases from the inlet 101 to the mounting portion 103, which facilitates insertion of the plug-in portion 104 into the connecting pipeline 302 in the main body of the pneumoperitoneum machine, and after insertion, the plug-in portion 104 with the increased diameter can be matched with the connecting pipeline 302, and the plug-in portion 104 is stably connected through the friction force between the outer wall of the plug-in portion 104 and the connecting pipeline 302.

[0065] In the embodiment, the larger-diameter end of the plug-in portion 104 and the body 10 form a stepped limiting portion 105, when the plug-in portion 104 is inserted into the connecting pipeline 302, a pipe clamp can be installed at a position outside the connecting pipeline 302 between the limiting portion 105 and the mounting portion 103, the connecting pipeline 302 and the body 10 are connected firmly through the pipe clamp, at this time, the limiting portion 105 can limit the connecting pipeline 302 at the clamping position of the pipe clamp, so as to prevent the connecting pipeline 302 from being separated from the plug-in portion 104.

[0066] ​​The utility model discloses, the plug -in part 104 outer diameter gradually increases from the entrance 101 to the mounting part 103, to make the plug -in part 104 outer wall form the tapered inclined plane, when installing liquid backflow detection device 1 in the pneumoperitoneum machine main machine 3, can guarantee the entrance 101 and the outlet 102 with pneumoperitoneum machine main machine 3 inside connecting pipeline 302 connection stability, prevent the use in plug -in part 104 and connecting pipeline 302 produce slack.

[0067] In a second aspect, the utility model provides a pneumoperitoneum machine, as shown in the figure, including main machine 3, gas tube and liquid backflow detection device 1 in this embodiment, and the main machine is equipped with connector 301, and the gas tube is detachably connected with connector 301, and liquid backflow detection device 1 is arranged inside main machine 3. Figure 5

[0068] Specifically, the main machine 3 outer wall is equipped with connector 301 in this embodiment, and the gas tube is detachably connected with connector 301, and liquid backflow detection device 1 is connected between the two connecting pipelines 302 in the main machine.

[0069] The utility model discloses two electrode sheets 2 in liquid backflow detection device 1 are penetrated through the delivery cavity 100, when the liquid in the gas tube is backflowed to the connecting pipeline 302 in the main machine 3 from the gas tube and is backflowed to the delivery cavity 100 along the entrance 101, no matter the liquid flow size backflowed to the delivery cavity 100, will contact two electrode sheets 2, thereby two electrode sheets 2 are conducted, and then can be in time delivered to detection circuit and send alarm signal, remind medical staff to adjust pneumoperitoneum machine equipment main machine in time, avoid the pollution to pneumoperitoneum machine main machine 3 inside, have simple structure, and the advantage that the detection effect is accurate.

[0070] In one embodiment, the pneumoperitoneum machine further comprises a detection device 4, and the detection device 4 is provided with a detection circuit, and the detection circuit is electrically connected with the two electrode sheets 2 respectively.

[0071] Specifically, the setting position of the detection device 4 is not limited in this embodiment, and the detection device 4 can be arranged inside the main machine 3 or outside the main machine 3. The detection device 4 is provided with a processor and an alarm, the processor is used to process the electric signal on the electrode sheet 2, and the alarm is used to send an alarm prompt.

[0072] In this embodiment, the two electrode sheets 2 are connected with the positive electrode and the negative electrode in the detection circuit respectively, when there is medium in the delivery cavity 100, the conductive medium forms a current loop between the two electrode sheets 2 and the detection circuit, and the electric signal is delivered to the processor in the detection device 4.

[0073] ​Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope of the appended claims.

Claims

1. A liquid backflow detection device, characterized by, The utility model relates to a liquid backflow detection device (1) comprising: a body (10) which is hollow inside and forms a delivery cavity (100) for delivering a medium, one end of the body (10) being an inlet (101) and the other end of the body (10) being an outlet (102); two electrode sheets (2) which are mounted on the body (10) and at least part of which is located in the delivery cavity (100), the electrode sheets (2) extending through the delivery cavity (100) and being spaced apart from each other in the delivery cavity (100), and the electrode sheets (2) being connected to a detection circuit respectively.

2. The liquid backflow detection device of claim 1, wherein, The electrode sheet (2) comprises a detection hole (201) which is coaxially arranged with the delivery cavity (100) and has an inner diameter not greater than that of the delivery cavity (100).

3. The liquid backflow detection device of claim 2, wherein, The electrode sheet (2) further comprises a glue pouring hole (202) which is arranged at a peripheral position of the detection hole (201).

4. The liquid backflow detection device according to any one of claims 1 to 3, characterized in that, The electrode sheet (2) further comprises a connecting terminal (203) which is arranged at an edge position of the electrode sheet (2) and extends out of the outer wall of the body (10).

5. The liquid backflow detection device of claim 4, wherein, The connecting terminal (203) is provided with a mounting hole (204) at an end thereof away from the body (10) for being connected to the detection circuit.

6. The liquid backflow detection device of claim 5, wherein, The body (10) is provided with a mounting portion (103) between the inlet (101) and the outlet (102), the electrode sheet (2) is arranged in the mounting portion (103), and the mounting portion (103) protrudes out of the outer wall of the body (10).

7. The liquid backflow detection device of claim 6, wherein, The body (10) is provided with a plug-in portion (104) at each end thereof, the inlet (101) and the outlet (102) correspond to the plug-in portion (104).

8. The liquid backflow detection device of claim 7, wherein, The outer diameter of the plug-in portion (104) gradually increases from the inlet (101) to the mounting portion (103), and a limiting portion (105) is formed between the plug-in portion (104) away from the inlet (101) and the body (10).

9. A pneumostachion, characterized in that The utility model relates to a liquid backflow detection device (1) comprising: a host computer (3) which is provided with a connector (301); an insufflation tube which is detachably connected to the connector (301); and the liquid backflow detection device (1) according to any one of claims 1 to 8 is arranged inside the host computer (3). The utility model further comprises:

10. The insufflator of claim 9, wherein, a detection device (4) which is provided with a detection circuit electrically connected to the two electrode sheets (2). ​

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