Pneumoperitoneum machine filter

Abstract

The application discloses a pneumoperitoneum machine filter, which comprises a main cylinder and two cover members at two ends of the main cylinder, the inner cavities of the cover members are separated into at least two cavities which are not communicated with each other, and a hole column is further arranged in the cover members and is communicated with the end faces of the cover members; the main cylinder further comprises a first accommodating cavity and a second accommodating cavity which are respectively provided with filter members and are opposite to each other, the first and second accommodating cavities extend along the axis of the main cylinder and are not coaxial with each other, so as to form two hollow cavities which are distributed in a staggered mode about the axis of the main cylinder, the cavity bottoms of the two cavities are partially connected, and the main cylinder further comprises a first flow channel which is communicated with the cavity bottom of the first accommodating cavity and forms a gas conveying cavity, a second flow channel which is communicated with the cavity bottom of the second accommodating cavity and forms a smoke discharging cavity, and a functional cavity, the two ends of the flow channels of the gas conveying cavity, the smoke discharging cavity and the functional cavity are selectively communicated with an independent channel on the two cover members, the pressure of each channel in the main cylinder can be maintained, the filtering effect and the filtering efficiency can be balanced, and the condensed liquid in the main cylinder can be removed, so that the service life of the filter is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a gas insufflation machine filter with independent three channels. BACKGROUND

[0002] Laparoscopic surgery requires the establishment of a gas insufflation in the abdomen of a human body. A device commonly used in surgery is a gas insufflation machine. The gas insufflation machine connected to a gas source device fills the human abdomen with gas to form a pressurized cavity, which is also a gas insufflation. The establishment of a gas insufflation provides the required space and vision for laparoscopic surgery. Ideally, during the entire surgical procedure, the gas source device is configured to input gas into the pressurized cavity at a stable flow rate to maintain the gas pressure in the gas insufflation, i.e., the stability of the gas insufflation space.

[0003] However, there are still two problems that need to be considered for the gas insufflation machine device. On the one hand, the input gas from the gas source device may contain impurities, and impure carbon dioxide containing impurities cannot be directly discharged into the gas insufflation. On the other hand, the electric knife and other related cutting instruments used during surgery will generate high temperatures during cutting, which will cause the human tissue in contact with the instrument to gasify and thus generate a large amount of smoke. The smoke fills the gas insufflation, which will affect the visibility of the gas insufflation space and cause the surgical field to be obscured. The smoke contains carbonized tissue, viruses, and cell debris, which makes it impossible to directly discharge the smoke to avoid pollution of the surgical environment.

[0004] Therefore, the existing gas insufflation machine device is equipped with a filtering device. The filtering device filters the gas inlet of the gas insufflation machine on the one hand, and cooperates with the puncture device to recover and filter the smoke generated during the operation before discharging it.

[0005] For example, in a existing filtering assembly, a independent gas filtering assembly is disclosed in a Chinese utility model patent with the authorization announcement number CN216455120U. As can be seen from the specification

[0039] paragraph, the main body of the filtering assembly is provided with three independent channels. The gas insufflation channel is provided with a gas insufflation channel, the operating channel is provided with a gas-tight channel, and the circulating channel is provided with a circulating channel. The gas insufflation channel, the gas-tight channel, and the circulating channel are respectively communicated with the three channels. Referring to the attached drawings of the specification Figure 2 In the exploded structure of the filtering assembly, the inside of the main cylinder structure is formed into three separated inner cavities by the "S" shaped partitioning ribs, and two cylindrical filter elements are respectively inserted into the corresponding inner cavities from both ends of the main cylinder. As can be seen, the establishment of the three independent channels (gas-tight channel, circulating channel, and circulating channel) in this scheme is to form three separated channels in the main cylinder, and then make the flow distribution plate and the end cover plate respectively adapt to the first filter element and the second filter element.

[0006] In the prior art, the gas enters the second end cover from the joint, and then flows through the multi-stage channels until it is discharged from the first end cover. During this process, the gas flow in the main cylinder is not sufficient due to linear flow, which leads to insufficient filtration of the filter, and impurities inevitably exist in the gas. One conceivable improvement is to reduce the gas inlet pressure at the gas source end, so that the gas can stay in the main cylinder for a longer time, and the filtration effect can be improved by accumulating time. However, the problem caused by reducing the pressure at the gas source end is that the transmission rate of the gas is low, although the filtration effect is improved, but the filtration and gas inlet efficiency is significantly reduced. To solve this problem, a scheme is proposed to balance the filtration effect and filtration efficiency by repeatedly controlling the gas inlet pressure at the gas inlet end. However, this causes the gas pressure in the main cylinder to be unstable, and therefore, in order to maintain the stability of the gas pressure in the gas cavity, it is necessary to configure the gas source device to input more gas. Even if the cost increase caused by the gas supplement method is not considered, the gas supplement method still requires higher accuracy for pressure measurement and pressure stabilization of the device.

[0007] In addition, after the filter assembly filters out the water in the smoke, liquid accumulation will be formed in the main cylinder structure. When the amount of liquid accumulation reaches a limit, a new filter device needs to be replaced. In the existing structure, the filter is filled in the inner cavity of the main cylinder structure, but the main cylinder structure is limited by the establishment of three independent channels, so the available space is very limited. In actual surgery, the service life of a single filter device is relatively short, and the filter device filled with liquid needs to be replaced repeatedly.

[0008] Therefore, an improved filter device for a pneumostasis machine should be proposed to solve the above technical problems existing in the prior art. SUMMARY

[0009] In view of the deficiencies of the prior art, the present application provides a filter for a pneumostasis machine, which can maintain the pressure of each channel in the main cylinder, balance the filtration effect and filtration efficiency, and realize condensate in the main cylinder, thereby prolonging the service life of the filter.

[0010] To solve the above technical problems, the present application adopts a gas insufflation machine filter, which comprises at least one docking end adapted to the gas insufflation machine, and at least one interface end connected to the puncture device, wherein, from the docking end to the interface end, the gas insufflation machine filter comprises a main cylinder and two cover members covering both ends of the main cylinder, wherein the inner cavity of each cover member is separated into at least two cavities not connected to each other, and a hole column is further included in the inner cavity of the cover member, which extends from the inner cavity of the cover member and communicates with the end faces of the cover member on both sides, and the hole column and the cavities not connected to each other form multiple independent channels; the main cylinder further comprises a first receiving cavity and a second receiving cavity respectively provided with filter members and facing away from each other, the first and second receiving cavities are configured to extend along the axis of the main cylinder in different axes to form two hollow cavities in the main cylinder, which are distributed in a staggered manner with respect to the axis of the main cylinder, the cavity bottoms of the first and second receiving cavities are partially connected to form a whole, so that the inner cavity of the main cylinder is partially penetrated, and the filter further comprises a first flow channel communicating with the cavity bottom of the first receiving cavity to form a gas inlet cavity, a second flow channel communicating with the cavity bottom of the second receiving cavity to form a smoke outlet cavity, and a functional cavity extending in the penetrated part of the main cylinder, and the cavity of the gas inlet cavity, the smoke outlet cavity and the functional cavity is configured to selectively communicate with one of the independent channels on the two cover members, and when the two cover members are combined with the main cylinder, at least three cavities not connected to each other are formed between the docking end and the interface end.

[0011] As a further preferred embodiment of the present application, the first flow channel and the second flow channel are configured to have an inlet diameter much larger than the diameter at the communication between the two flow channels and the two receiving cavities, and the volume of the first receiving cavity and the second receiving cavity is greater than the volume of the first flow channel and the second flow channel.

[0012] As a further preferred embodiment of the present application, the outer cavity wall of the first receiving cavity and the second receiving cavity is partially in contact with the inner cavity wall of the main cylinder, and the whole formed by the first receiving cavity and the second receiving cavity is accommodated in the main cylinder and forms a bias in the inner cavity space of the main cylinder, and the outer contour of the bias whole is jointly limited by the outer walls of the first to third flow channels and the inner cavity wall of the main cylinder to form a region, which is defined as a condensate area.

[0013] As a further preferred embodiment of the present application, each cover member is composed of at least two end cover members which are fitted to splice into a whole, and the two end cover members are defined as an inner cover member close to the main cylinder and an outer cover member away from the main cylinder, wherein the inner cover member and the outer cover member are configured to form a welding rib which is in close contact between the two end cover members which form the cover member, the welding rib serves as a separation rib to separate the cover space formed by the abutment of the two end cover members into two independent and non-connected cavities, and the hole column is formed on the welding rib.

[0014] As further preferred of the present application, each of the independent channels forms an opening on the two end surfaces of the cover member, the opening includes a hole-shaped opening and an arc-shaped opening, the opening and the independent channel are combined to form at least one first channel with the hole-shaped opening as the output port, and at least two second channels with the arc-shaped opening as the output port, and the input from the first channel on any of the cover members enters the main barrel structure and then is output from the input port of the second channel on the other cover member.

[0015] As further preferred of the present application, the two ends of the main barrel are defined as the gas input end and the smoke exhaust end, the cover member on the gas input end includes a first channel to the gas input cavity, a second channel connected to the second flow channel of the smoke exhaust cavity, and another second channel connected to the third flow channel; the cover member on the smoke exhaust end includes a first channel to the smoke exhaust cavity, a second channel connected to the second flow channel of the gas input cavity, and another second channel connected to the third flow channel.

[0016] As further preferred of the present application, the cover member on the docking end is formed with a docking portion adapted to the gas insufflation machine, and the cover member on the interface end is formed with an interface portion adapted to the pipeline of the docking puncture device, wherein the docking portion includes at least three first connecting hole columns, each of which corresponds to each independent channel in the cover member on the docking end; the interface portion includes at least three second connecting hole columns, which are gathered together to form a whole, and each of the second connecting hole columns corresponds to each independent channel in the cover member on the interface end.

[0017] As further preferred of the present application, the connection between each second channel and the first to third flow channels is configured as follows: the second channel is formed with an arc-triangle-shaped opening, and the openings of the first to third flow channels that are connected to the second channel are also formed with consistent arc-triangle-shaped openings, so that the second channel and the first to third flow channels are tightly matched when they are connected.

[0018] As further preferred of the present application, in the main barrel, a condensate baffle is arranged in the second receiving cavity to cover the whole second receiving cavity, in the use state, the condensate baffle is located above the condensate area in the radial direction of the main barrel, the side surface of the condensate baffle facing the smoke input direction is formed with a plurality of annular ribs, and the condensate baffle is formed with a smoke inlet gap, the smoke inlet gap is configured with a smoke blocking portion, the smoke inlet portion is configured to partially extend further in the smoke input direction to form a groove-shaped smoke buffer portion, and the groove of the smoke buffer portion is partially blocked by an arc-shaped baffle to form the smoke blocking portion.

[0019] As the further preferred of the scheme, after the condensate baffle is engaged with the second accommodating cavity, a region is formed between the condensate baffle and the second accommodating cavity, the filter element in the second accommodating cavity is accommodated in the region, and a liquid discharge hole is formed on the cavity wall of the second accommodating cavity and faces the condensate region.

[0020] Due to the adoption of the above technical scheme, the present application has the following beneficial technical effects compared with the prior art:

[0021] 1. The gas insufflation machine has independent channels such as a gas conveying cavity, a smoke discharging cavity and a functional cavity. In the prior art, in order to realize the separation of each cavity in the main cylinder structure, the specification of the main cylinder is difficult to reduce, which further leads to that, after the filter filters the water in the smoke, the condensate will quickly fill the inner cavity of the main cylinder. In the present application, the inner part of the main cylinder is formed in different axial misaligned distribution, and part of the independent cavities are connected, so that the inner space of the main cylinder can be reduced in the same specification of the filter structure, and the space left out is used as a condensate region, which increases the liquid storage capacity of the main cylinder and realizes the technical purpose of prolonging the service period of the filter.

[0022] 2. According to the misaligned distribution of the inner cavity structure of the main cylinder, the opening part on the two end cover members of the main cylinder is reconfigured, and according to the direction of fluid flow, the fluid is input from the large cavity and output from the small cavity in each channel. In this way, the fluid can be stored in the larger cavity and then be squeezed out of the small cavity through the opening part, so that the pressure of the fluid can be gradually reduced during the flow process, which can not only make the fluid fully contact with the filter element, but also avoid the problem of reduced filtering efficiency caused by too fast reduction of fluid pressure, thereby balancing the relationship between filtering effect and filtering quality.

[0023] 3. The functional cavity is configured as a pressure measuring channel extending from the docking end of the gas insufflation machine to the interface end. During the use of the gas insufflation machine, the pressure in the gas insufflation machine is measured, the gas conveying amount of the gas source end is controlled, and the carbon dioxide obtained after the smoke generated during the operation is recovered and filtered is discharged to the gas conveying end as a supplement of the gas source end, so as to reduce the gas consumption during the use of the gas insufflation machine. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a schematic view showing the front structure of the gas insufflation machine filter in a preferred embodiment of the present application;

[0025] Figure 2 FIG. 2 is a schematic view showing the structure of the mounting position on the gas insufflation machine corresponding to the filter;

[0026] Figure 3 FIG. 3 is an exploded view showing Figure 1 FIG. 4 shows the exploded structure of the gas insufflation machine filter from the perspective close to the docking end;

[0027] Figure 4 is an exploded view of the gas insufflation machine filter shown in Figure 1 is a perspective view of the gas insufflation machine filter shown in

[0028] Figure 5 is a state diagram showing Figure 3 is a perspective view of the two end cap pieces that form the first cover body piece shown in

[0029] Figure 6 is a state diagram showing Figure 4 is a perspective view of the two end cap pieces that form the first cover body piece shown in

[0030] Figure 7 is a perspective view of the surface structure of the first outer cap piece shown in

[0031] Figure 8 is a perspective view of the surface structure of the first outer cap piece shown in

[0032] Figure 9 is a perspective view of the surface structure of the first inner cap piece shown in

[0033] Figure 10 is a perspective view of the surface structure of the first inner cap piece shown in

[0034] Figure 11 is a state diagram showing Figure 3 is a perspective view of the two end cap pieces that form the second cover body piece shown in

[0035] Figure 12 is a state diagram showing Figure 4 is a perspective view of the two end cap pieces that form the second cover body piece shown in

[0036] Figure 13 is a perspective view of the surface structure of the second inner cap piece shown in Figure 12

[0037] Figure 14 is a perspective view of the structure of the gas delivery end of the main cylinder shown in

[0038] Figure 15 is a perspective view of the structure of the gas delivery end of the main cylinder shown in Figure 14

[0039] Figure 16 is a perspective view of the structure of the gas delivery end of the main cylinder shown in

[0040] Figure 17 is a perspective view of the structure of the gas delivery end of the main cylinder shown in​​Figure 16 the surface structure of the condensate baffle in the condensate baffle;

[0041] Figure 18 is a schematic view showing Figure 16 the bottom surface structure of the condensate baffle in the condensate baffle;

[0042] Figure 19 is a sectional view showing the sectional structure of the main cylinder in the assembled state;

[0043] Figure 20 is a schematic view showing the surface structure of the second outer cover. DETAILED DESCRIPTION

[0044] Looking back at the prior art cited in this application, in this scheme which also implements three channels, the inner cavity of the main cylinder part is divided into two channels by the "S" shaped partitioning rib, two cylindrical filter elements are arranged in the two channels, and the third channel is formed between the two existing filter elements after the further extension of the partitioning rib. It can be seen that, in the existing structure, in order to adapt to the filter elements and the third channel, the internal space of the main cylinder part is not fully utilized, and there is a large amount of unused space between the filter elements and the channels of the main cylinder. Looking at the drawings of the specification of the prior art Figure 2 , in this scheme, one end of the main cylinder part is covered by the first end cover and the flow distribution plate, and the other end is covered by the second end cover, so that the three channels contained in the filter assembly from one end to the other end are linear channels in a straight line direction. During the transmission of the fluid in the channel, the fluid will flow through the various component structures too quickly when passing through the two end covers, the flow distribution plate and the filter elements.

[0045] On the other hand, the problem is that in actual working conditions, condensate will be generated after the smoke is filtered and absorbed by the filter assembly. In the prior art, due to the fact that the inner cavity of the main cylinder is fully filled by the two filter elements, the remaining space in the main cylinder will be quickly filled with condensate due to the accumulation of condensate and the self-expansion of the filter element after filtering and absorption. In the prior art, in order to ensure the continuous operation of the insufflation device, the filter element is frequently replaced, and the overall service life of the filter element is relatively short.

[0046] The idea of solving the above technical problems of the present application includes:

[0047] 1) The filter structure is redesigned, and the layout of each independent channel is optimized, so that the fluid can gradually and slowly reduce its pressure when flowing in the filter, and can stay in the filter for a longer time while maintaining the flow pressure of the fluid, balancing the filtering effect and filtering efficiency of the filter;

[0048] 2) According to the re-layout design of the independent channel, the main cylinder structure is improved adaptively, in the same specification of the main cylinder inner cavity, the independent three-channel distribution is realized, the main cylinder inner cavity space is saved, the condensate zone is formed, the liquid storage capacity of the main cylinder structure is improved, and then the service life and replacement cycle of the filter are prolonged.

[0049] An embodiment of the gas insufflation machine filter according to the present application will be described below with reference to the accompanying drawings. Those skilled in the art can appreciate that the described embodiment can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the accompanying drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims. In addition, in this specification, the drawings are not drawn to scale, and the same reference numerals represent the same parts.

[0050] It should be noted that the terms "first" and "second" used in the embodiments of the present application are used to distinguish two entities with the same name or two different parameters. It can be seen that "first" and "second" are only used for convenience of description and should not be understood as a limitation of the embodiments of the present application. The subsequent embodiments will not be described one by one.

[0051] Figure 1 For the sake of illustration, the front view structure of the gas insufflation machine filter according to a preferred embodiment of the present application is schematically shown. Referring to Figure 1 The overall structure of the gas insufflation machine filter 100 is cylindrical. In use, Figure 1 The structure shown needs to be inserted into the corresponding mounting position of the gas insufflation machine. For example, Figure 2 For the sake of illustration, the structure of the mounting position corresponding to the filter on the gas insufflation machine is shown. The adaptation and positioning between the filter and the gas insufflation machine are achieved by the butt joint end of the mounting position bottom and the gas insufflation machine filter 100, and the extension ribs on the gas insufflation machine filter. Referring to Figure 1 In a preferred embodiment, the two ends of the gas insufflation machine filter 100 form different connection structures. Specifically, according to Figure 1 The direction shown includes the butt joint end 101 (left side of the picture) inserted into the gas insufflation machine, and the interface end 103 (right side of the picture) connected with the connecting pipe 102 and to be connected to the puncture device. In addition, the outer wall surface of the gas insufflation machine filter 100 is partially further extended to form multiple extension ribs 104. Referring to Figure 2 The mounting position 200 of the gas insufflation machine is an internally recessed insertion interface structure. The bottom thereof forms three insertion holes 201, which can be matched and fixed with the interfaces on the butt joint end of the gas insufflation machine filter 100. The positioning groove 202 formed on the inner cavity wall thereof forms positioning with the extension ribs 104 of the gas insufflation machine filter 100. Through such a design, the following technical purposes are achieved:

[0052] 1) Since the two ends of the pneumoperitoneum machine filter are connected with different devices, the installation position is matched with the bite of the filter connection end, and the two ends of the pneumoperitoneum machine filter are distinguished, preventing misconnection;

[0053] 2) Preventing the pneumoperitoneum machine filter from being misaligned due to unexpected rotation in the installation position.

[0054] It should be understood that the matching mode between the pneumoperitoneum machine filter and the pneumoperitoneum machine should not be limited by the style of the connection end of the pneumoperitoneum machine filter, the bite mode between the connection end and the installation position, or the specifications of the positioning ribs and the positioning grooves, the shape and number of the extension ribs, and the like. The connection mode and the structural configuration mentioned above can be adjusted by the person skilled in the art according to the product design requirements.

[0055] Combined with the improved idea 1) of the present application and referring back to Figure 1 That is, three independent channels are formed between the connection end 101 and the interface end 103, respectively completing air inlet, smoke exhaust, and functional expansion. Figure 3 and Figure 4 is an exploded view, which shows Figure 1 The exploded structure of the pneumoperitoneum machine filter in different viewing directions. Referring to Figure 3 , the pneumoperitoneum machine filter 100 is exploded and includes a main cylinder 300 and two cover members forming a closed structure on both sides of the main cylinder 300. Different filter members are arranged between each cover member and the main cylinder 300, and a condensate baffle 400 is added compared with the existing structure.

[0056] First, the cover member. According to the differences between the connection end 101 and the interface end 103, the cover members at both ends of the main cylinder 300 are defined as the first cover member 500 of the connection end and the second cover member 600 of the interface end. In the preferred embodiment of the present application, the inner cavity of each cover member is separated into at least two spaces that are not connected with each other. In the way of realizing the inner cavity separation structure, if the cover member is an integral structure, a separation rib can be cast in the inner cavity of the cover member to separate the inner cavity of the cover member into different spaces; and if the cover member is a spliced member, a welding rib with the same specifications and extension style can be formed between the end cover members that constitute the cover member. When the two end cover members are welded into an integral structure, the welding rib that matches the connection is the aforementioned separation rib, which separates the inner cavity space of the cover member into different spaces. In the preferred embodiment of the present application, the latter way is exemplified, that is, the way of forming the cover member by splicing the end cover members is described.

[0057] Figure 5 and Figure 6 is a state diagram, which shows the state diagram of the splicing of the two end cover members that form the first cover member in two viewing angles. Referring to Figure 5 andFigure 6 , and in combination Figure 3 , and in combination Figure 4 It can be seen that in the preferred embodiment, the first cover member 500 is formed by splicing two end cover members, and the matching welding ribs 105 are formed on the abutting surfaces of the two end cover members. According to the positions of the two end cover members relative to the main cylinder 300 in the assembled state, the two end cover members constituting the first cover member 500 are defined as a first inner cover member 501 close to the main cylinder 300 and a first outer cover member 502 away from the main cylinder 300. Figure 7 , and in combination Figure 8 For the structure of the two side cover surfaces of the first outer cover member 502, first see Figure 7 Three independent first connecting hole columns 503 are formed on one side cover surface of the first outer cover member 502, and see Figure 2 The first connecting hole columns 503 correspond one-to-one to the plug-in holes 201 in the mounting site 200 of the insufflator, and as described above, the engagement and fixation therebetween realize the abutment between the insufflator filter and the insufflator, so this side of the first outer cover member 502 is the abutment side. See Figure 8 The welding ribs 105 are formed on the other side cover surface of the first outer cover member 502, and the three first connecting hole columns 503 on the abutment side of the first outer cover member 502 form corresponding hole-shaped through openings 504 on the side cover surface, so this side is the welding side. In the preferred embodiment, the welding ribs can be considered as two radii with an obtuse angle formed on the circular cover surface.

[0058] Correspondingly, the first inner cover member 501 also has the welding ribs 105 with an obtuse angle shape corresponding to the first outer cover member 502, Figure 9 , and in combination Figure 10 For the structure of the two side cover surfaces of the first inner cover member, first see Figure 9 The welding ribs 105 consistent with the first outer cover member 502 are formed on the side cover surface of the first inner cover member 501 for welding with the first outer cover member 502, and the welding ribs 105 also have another through opening corresponding to the center of the first outer cover member 502, and see Figure 5 It can be seen that when the first outer cover member 502 and the first inner cover member 501 are spliced, the welding ribs 105 are abutted and engaged, and then an integrated structure is formed by ultrasonic welding, and the two opposite through openings are abutted to form a closed passage in the inner cavity of the first cover member 500. Thus, on the basis of the welding ribs 105 separating the inner cavity of the first cover member 500 into two unconnected spaces, the abutment of the two through openings forms a third space unconnected with the other two spaces in the inner cavity of the first cover member 500, and thus three independent passages unconnected with each other are formed in the first cover member 500.

[0059] Continue to see Figure 9 , and in combination Figure 10, in addition to the welding rib 105, two arc-shaped openings 106 in the shape of arc-edge triangle are formed in the first inner cover member 501, so that, looking back Figure 5 and Figure 6 When the first inner cover member and the first outer cover member are closed, the first cover member 500 contains a first channel 107 from the first connecting hole column 503 to the other side hole-shaped opening 504 at the center position, and two second channels 108 from the first connecting hole column 503 to the arc-shaped openings 106.

[0060] Then, the second cover member 600. The inner cavity of the second cover member 600 is divided into three channels that are not connected to each other. Figure 11 and Figure 12 The state diagram of the two end cover members that form the second cover member is shown from two perspectives. Also according to the position of each relative to the main cylinder 300 in the assembled state, the two end cover members that constitute the second cover member 600 are defined as the second outer cover member 602 away from the main cylinder 300, and the second inner cover member 601 close to the main cylinder 300, referring to Figure 11 and Figure 12 It can be seen that the adaptation between the second inner and outer cover members is similar to that of the first inner and outer cover members, and the difference between the configuration of the first inner and outer cover members is:

[0061] 1) The style of the welding rib between the second inner cover member 601 and the second outer cover member 602 is a diameter-shaped welding rib on the circular cover surface;

[0062] 2) On the abutting side of the second outer cover member 602, three second connecting hole columns 603 are formed that are in contact with each other to form a whole, and correspondingly, the hole-shaped openings 504 formed on the welding side of the second connecting hole column 603 on the second outer cover member 602 are located close to each other on the surface of the second outer cover member 602, one of which coincides with the diameter of the aforementioned diameter-shaped welding rib 105, and the other two are located on the two sides of the diameter, and the whole formed by the three hole-shaped openings 504 is offset from the center of the circular cover surface;

[0063] 3) Figure 13 For the sake of illustration, the surface structure of the second inner cover member in Figure 12 is shown, referring to Figure 12 and Figure 13 In addition to containing the welding rib 105, the second inner cover member 601 also includes two arc-shaped openings 106 in the shape of arc-edge triangle, but compared to Figures 5 to 8It can be seen that the distribution of the arc-shaped openings 106 on the first outer cover member 502 and the second outer cover member 602 is different, which is designed in accordance with the configuration of the internal independent channels and the corresponding adaptive configuration of the internal structure of the main cylinder. The structure of the main cylinder 300 will be described later, and will not be described here. However, although there are differences in the positions of the arc-shaped openings 106 and the like, the second cover member 600 formed by the combination of the second inner cover member 601 and the second outer cover member 602 also has three independent channels formed therein, and also includes a first channel 107 from the second connecting hole column 603 to the other side hole-shaped opening 504, and two second channels 108 from the second connecting hole column 603 to the arc-shaped openings 106.

[0064] The internal cavity structure of the main cylinder 300 will be described below. Referring back to Figure 3 and Figure 4 , the main cylinder 300 is a hollow cylindrical member, and an internal cavity structure is formed therein. Figure 14 is a schematic view showing the structure of the gas inlet end of the main cylinder in a preferred embodiment of the present application, Figure 15 is a schematic view showing Figure 14 the structure of the smoke outlet end of the main cylinder. The two ends of the main cylinder are defined as the gas inlet end 301 near the docking end 101 and the smoke outlet end 302 near the interface end 103. The gas inlet end 301 refers to the gas source end through which the gas enters the filter after the gas insufflation machine filter is docked with the gas insufflation machine, and the smoke outlet end 302 refers to the port through which the smoke in the operation is filtered into the filter by the puncture device.

[0065] Referring back to Figure 8 , the side cover surface of the first inner cover member 501 forms another circular arc-shaped welding line 109, and referring back to Figure 14 , the gas inlet end 301 of the main cylinder 300 has a first receiving cavity 303 formed therein. The first receiving cavity 303 is an open-ended receiving cavity, and the internal cavity thereof is used to accommodate the first filter member 110 required for the gas inlet end 301. It should be noted that the outer cavity wall of the first receiving cavity 303 is partially in contact with the inner cavity wall of the main cylinder 300, and the outer contour of the cavity wall of the first receiving cavity 303 which is not in contact with the main cylinder 300 forms a fusion groove 304. The fusion groove 304 is also circular arc-shaped and consistent with the welding line 109 on the first inner cover member 501. In addition, referring back to Figure 14On the outside of the first accommodating cavity 303, along the inner cavity wall of the main cylinder 300, two flow channels with arc-triangle openings and extending to the other side of the main cylinder are also formed, and the two arc-triangle flow channels are consistent with the specifications of the arc-shaped openings 106 on the first inner cover 501. Therefore, when the first cover 500 is welded with the main cylinder 300, the two arc-shaped openings on the first inner cover 501 are in butt joint with the arc-triangle flow channels in the main cylinder 300, so that the first channel 107 and the two second channels 108 in the first cover 500 are respectively in single communication with the first accommodating cavity 303 and the two arc-triangle flow channels in the main cylinder 300.

[0066] Similarly, the smoke exhaust end 302 of the main cylinder also has corresponding structures. Referring to Figure 15 , the second accommodating cavity 305 is formed in the inner cavity of the smoke exhaust end 302 of the main cylinder 300. From the perspective of the smoke exhaust end 302, it can be seen that the opening direction of the second accommodating cavity 305 is opposite to that of the first accommodating cavity 303, and although both of them extend along the axis direction of the main cylinder, the first accommodating cavity 303 and the second accommodating cavity 305 do not extend coaxially, but form two cavity channels that are distributed in dislocation with respect to the axis of the main cylinder 300. The cavity bottoms of the first accommodating cavity 303 and the second accommodating cavity 305 are partially connected, and the whole formed by the two is placed in the main cylinder 300, so that a partially through structure is formed in the main cylinder 300. Of course, in other embodiments of the present application, the dislocation arrangement of the first accommodating cavity 303 and the second accommodating cavity 305 can also be that the cavity side wall of the first accommodating cavity 303 is in contact with the cavity side wall of the second accommodating cavity 305, but this is not conducive to fully utilizing the inner cavity space of the main cylinder.

[0067] Continuing to see Figure 15 , according to the display direction of Figure 15 , on the radial direction of the main cylinder 300, the two sides of the second accommodating cavity 305 also form symmetrical flow channels with two arc-triangle openings and extending to the gas inlet end of the main cylinder, which are compared with Figure 14 and Figure 15It can be seen that the flow channel of the arc-shaped triangular opening of the gas inlet end 301 is in communication with the bottom of the second accommodating cavity 305 through a through hole 306, and the flow channel of the arc-shaped triangular opening of the smoke outlet end 302 is in communication with the bottom of the first accommodating cavity 303 through a through hole 306, so that, for the convenience of description, the arc-shaped triangular flow channel in communication with the bottom of the first accommodating cavity 303 is defined as a first flow channel 307, and the cavity channel formed by the first flow channel 307 and the first accommodating cavity 303 is the gas inlet cavity corresponding to the gas inlet end, and the arc-shaped triangular flow channel in communication with the bottom of the second accommodating cavity 305 is defined as a second flow channel 308, and the cavity channel formed by the second flow channel 308 and the second accommodating cavity 305 is the smoke outlet cavity corresponding to the smoke outlet end. The remaining cavity channel is the flow channel with arc-shaped triangular openings at both ends from the gas inlet end 301 to the smoke outlet end 302, which is defined as a third flow channel 309. The third flow channel 309 as a functional cavity can realize the expansion function in addition to the functions of gas inlet and gas outlet, for example, in the preferred embodiment, the third flow channel 309 is a pressure measuring channel to realize the pressure measuring function.

[0068] Figure 16 FIG. 6 is a partial cross-sectional view showing the structure of the smoke outlet end of the main cylinder of the preferred embodiment provided with a condensate baffle. Referring back to FIG. 5, Figure 15 , the first flow channel 307, the third flow channel 309 and the second accommodating cavity 305 define an inner recess space, and referring back to FIG. 6, Figure 16 , the condensate baffle 400 is installed in the inner recess space. In actual assembly, the second filter 111 corresponding to the smoke outlet end 302 is arranged in the second accommodating cavity 305, and the condensate baffle 400 is integrally arranged at the cavity opening of the second accommodating cavity 305. Figure 17 and Figure 18 respectively show the structures of the two side surfaces of the condensate baffle in Figure 16 , referring back to FIGS. 6 and 7, Figure 17 and Figure 18 , the condensate baffle 400 is a generally circular plate-shaped member, and an inlet smoke gap 401 is formed on the side surface thereof facing the second cover member 600, a plurality of annular condensate ribs 402 are formed on the plate surface below the inlet smoke gap 401, and the condensate ribs 402 can effectively increase the contact area of the smoke and the condensate baffle 400. Furthermore, in order to further enhance the condensate effect, the inlet smoke gap 401 is further designed, and a smoke blocking part for unsafely blocking the smoke is arranged on the inlet smoke gap 401. The inlet smoke gap 401 partially extends to the smoke input direction to form a groove-shaped smoke buffer part 4011, and an arc-shaped baffle 4012 is arranged to partially block the smoke buffer part 4011. Referring back to FIG. 6, Figure 6When the smoke is discharged from the smoke discharging end to the condensate baffle 400, due to the existence of the smoke blocking part, the smoke will preferentially contact the surface of the condensate baffle 400, especially the condensate rib 402, and then the smoke will enter the second containing cavity 305 from the smoke buffer part 4011 and be discharged. In this process, the condensate baffle 400 filters out most of the water vapor in the smoke.

[0069] To solve the second part of the idea of the present application, looking back at Figure 16 , after the condensate baffle 400 is assembled, a partially through region is formed at the bottom of the first containing cavity 303 and the second containing cavity 305 in the main cylinder 300, which is the condensate area 310. The condensate area 310 is used to store the condensate filtered out by the condensate baffle 400. On the other hand, considering the possibility that the condensate baffle 400 may not be sufficient to filter the water vapor in the smoke, the smoke will enter the second containing cavity 305 with a small amount of water vapor, then in this preferred embodiment, referring to Figure 19 , Figure 19 is a cross-sectional view showing the cross-sectional structure of the main cylinder in the assembled state. A liquid discharge hole 311 is provided on the cavity wall of the second containing cavity 305 close to the condensate baffle 400, which is directed to the condensate area 310, so that the accumulated liquid in the second containing cavity 305 can be discharged into the condensate area 310 through the liquid discharge hole 311.

[0070] So far, the structure of the first cover member 500, the second cover member 600 and the main cylinder 300, as well as the independent channels formed in each of them, has been described above. The corresponding relationship between these channels will be described below.

[0071] As mentioned earlier, in the main cylinder 300, the gas conveying cavity, the smoke discharging cavity and the pressure measuring cavity are formed, and in the first and second cover members, two first channels 107 and one second channel 108 are formed respectively. Then looking back at Figure 5 and Figure 6 , in this preferred embodiment, of the three first connecting hole columns 503 included in the first cover member 500, from top to bottom are the smoke discharging port 5031, the gas inlet port 5032 and the first pressure measuring port 5033. Referring to Figure 20 , Figure 20 shows the surface structure of the second outer cover member. According to Figure 20 the direction shown, of the three second connecting hole columns 603 included in the second cover member 600, there are the smoke inlet port 6031 at the center, the gas outlet port 6032 above the left of the smoke inlet port, and the second pressure measuring port 6033 above the right of the smoke inlet port 6031.

[0072] Wherein, the first cover member 500 side, the first channel 107 corresponding to the air inlet 5032 is opposite to the first receiving cavity 303 of the main cylinder 300, the gas input from the air inlet 5032 will be directly discharged to the first receiving cavity 303 through the hole column channel in the center of the first cover member 500, and after being filtered by the first filter 110, the gas will enter the first flow channel 307 on the other side of the main cylinder 300 from the through hole 306 at the bottom of the first receiving cavity 303, and then be discharged to the second cover member 600. The gas in the first flow channel 307 will enter the second cover member 600 through the arc-shaped opening 106 of the second channel 108 corresponding to the second cover member 600, and finally be discharged from the exhaust port 6032 of the second cover member 600. On the side of the second cover member 600, the first channel 107 corresponding to the smoke inlet 6031 is opposite to the second receiving cavity 305 of the main cylinder 300, the smoke sucked from the smoke inlet 6031 will be directly discharged to the condensate baffle 400 through the hole column channel in the center of the second cover member 600, and then be discharged to the second receiving cavity 305 through the smoke inlet gap 401 of the condensate baffle 400. After being filtered by the second filter 111, the smoke will be discharged to the second flow channel 308 on the other side of the main cylinder 300 from the through hole 306 at the bottom of the second receiving cavity 305, and then be discharged to the first cover member 500. The smoke in the second flow channel 308 will enter the first cover member 500 through the arc-shaped opening 106 of the second channel 108 corresponding to the first cover member 500, and finally be discharged from the smoke outlet 5031 of the first cover member 500.

[0073] On the other hand, from the first cover member 500 to the second cover member 600, from the first pressure measuring port 5033 on the first cover member 500 to the third flow channel 309 of the main cylinder 300 to the second pressure measuring port 6033 on the second cover member 600, a long straight channel is formed, which can be used to measure pressure in the preferred embodiment. Specifically, during the operation, the pressure building cavity is established on the abdomen of the patient by the insufflation machine and the puncture device, that is, the artificial pneumoperitoneum, and the third channel is formed from the insufflation machine to the artificial pneumoperitoneum, so that the pressure in the channel can be measured to obtain the real-time gas pressure in the artificial pneumoperitoneum. Through the gas pressure value data, the gas inflow of the gas source end of the insufflation machine can be calculated and configured to maintain the constant pressure in the artificial pneumoperitoneum. In other embodiments of the present application, the filtered carbon dioxide in the smoke exhaust cavity can also be used as a supplementary gas for the gas source end and be discharged to the gas inlet end of the insufflation machine again to reduce the amount of carbon dioxide used in the gas source end during the operation.

[0074] In the above structure description, it can be seen that in the preferred embodiment, whether in the direction of gas flow in the filter or in the direction of smoke flow in the filter, the following is always maintained:

[0075] 1) carbon dioxide or smoke, both from the first channel input from the connecting hole column, and from the arc-shaped opening to the main cylinder structure, and from the arc-shaped opening of the second channel on the other side cover, and finally from the other side of the connecting hole column output;

[0076] 2) in the main cylinder, the first flow channel and the second flow channel are configured to have a larger diameter than the diameter of the through hole, and the volume of the first and second receiving cavities is larger than the volume of the first and second flow channels;

[0077] During the flow of the fluid, whenever it is discharged from one structural component to another, it can always be stored in the previous component and then enter the next component from a smaller diameter opening. On the one hand, this enhances the filtering effect of the filter, and more importantly, in combination with the two configurations, the fluid can always be gradually reduced in pressure during the filtering process, which can ensure sufficient contact with the filter and does not require more gas to be added to maintain a certain flow rate of the gas in the filter. In actual working conditions, due to the existence of temporary gas intake during the operation, there may be a situation where the gas pressure in the artificial gas abdomen is too high or too low, and in this scheme, a separate pressure measuring channel is provided to obtain the real-time gas pressure value in the artificial gas abdomen. When the gas pressure in the artificial gas abdomen is too low due to the temporary gas intake at the gas source end, the filtered carbon dioxide recovered from the smoke can be discharged to the gas intake end as a supplementary gas source. In addition, it is worth mentioning that in some extreme cases, the gradual filtering in the filter may cause the gas pressure to be too high or too low, but the pressure data can still be obtained through the pressure measuring channel, and the problem can be solved by reducing or increasing the supplementary gas source.

[0078] The above describes a preferred embodiment of the present application. In other preferred embodiments of the present application, improvements can still be made in the following aspects:

[0079] 1) those skilled in the art can configure more independent channels between the first cover, the main cylinder and the second cover according to actual needs. For example, referring back to Figure 5 and Figure 6 In the foregoing embodiment, the welding rib in the first cover separates the inner cavity into two spaces that are not connected to each other, and in other embodiments, the welding rib can be configured in any form to separate the inner cavity of the first cover into more parts, and correspondingly, in the main cylinder, in addition to the gas conveying cavity, the smoke discharging cavity and the functional cavity, more flow channels identical to the third flow channel can be provided in the through part of the main cylinder, and one-to-one correspondence with the more inner cavities separated in the first cover can be achieved, and the second cover can be processed similarly to the first cover, that is, more independent channel configurations are formed to expand the function of the filter cavity. For example, in the existing scheme, a gas storage channel is added, which can be used to supplement gas when the pressure in the artificial gas abdomen is too low.

[0080] 2) In the scheme of more cavities, the multiple channels of the first cover member can correspond to one flow channel in the main cylinder, or one flow channel in the main cylinder can correspond to multiple channels on the first cover member and / or the second cover member. In other preferred embodiments of the present application, the correspondence between the channels and the flow channels can be flexibly adjusted to further adjust the volume of the through region in the main cylinder;

[0081] 3) Each cover member can also be composed of more layers of end caps, which can increase the number of pressure relief stages in the filter to adjust the pressure relief effect. However, the configuration of the cover member needs to balance the size of the cover member and the pressure relief effect.

[0082] Those skilled in the art can improve the foregoing preferred embodiments according to the above ideas. In addition, the style of the arc edge triangular opening and the through hole can be selected, or the specific position and bias angle of the flow channel in the main cylinder can be selected, but all should fall within the protection scope of the present application.

[0083] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A laparoscope filter comprising at least one docking end adapted to a laparoscope and at least one interface end connected to a puncture device, the laparoscope filter comprising a main cylinder and two cover members covering both ends of the main cylinder from the docking end to the interface end, wherein, the inner cavity of each of the cover members is divided into at least two cavities not in communication with each other, and a hole column is further included in the inner cavity of each of the cover members, the hole column extending from the inner cavity of each of the cover members and communicating with the end faces of each of the cover members, and the hole column and the cavities not in communication with each other form a plurality of independent channels in combination; the main cylinder further comprises a first receiving cavity and a second receiving cavity respectively provided with filter members and facing away from each other, the first receiving cavity and the second receiving cavity are configured to extend along the axis of the main cylinder in different axes to form two hollow cavities in the main cylinder, the hollow cavities are distributed in a staggered manner with respect to the axis of the main cylinder, the cavity bottoms of the first receiving cavity and the second receiving cavity are partially connected to form a whole, and the inner cavity of the main cylinder is partially penetrated; a first flow channel communicating with the cavity bottom of the first receiving cavity to form a gas supply cavity, a second flow channel communicating with the cavity bottom of the second receiving cavity to form a smoke exhaust cavity, and a functional cavity extending in the penetrated part of the main cylinder as a third flow channel are further included, the first flow channel and the second flow channel are formed in the space where the first receiving cavity and the second receiving cavity are staggered, and the cavity channels of the gas supply cavity, the smoke exhaust cavity and the functional cavity are configured to selectively communicate with one of the independent channels on the two cover members, when the two cover members are combined with the main cylinder, at least three cavities not in communication with each other are formed between the docking end and the interface end, the main cylinder further comprises a condensate baffle entirely covering the second receiving cavity, the condensate baffle is clamped in the second receiving cavity, and a region is formed between the condensate baffle and the second receiving cavity, the filter member in the second receiving cavity is contained in the region, the first receiving cavity and the second receiving cavity are combined to form a whole, and the outer contour of the whole, together with the outer walls of the first to third flow channels and the cavity walls in the inner cavity of the main cylinder, jointly limit the region formed, that is, the part of the inner cavity of the main cylinder which is partially penetrated, and the part is defined as a condensate region.

2. The laparoscope filter according to claim 1, wherein, the first flow channel and the second flow channel are configured to have an inlet diameter much larger than the diameter at the communication between the two flow channels and the two receiving cavities, and the volumes of the first receiving cavity and the second receiving cavity are greater than the volumes of the first flow channel and the second flow channel.

3. The laparoscope filter according to claim 2, wherein, the outer cavity walls of the first receiving cavity and the second receiving cavity are partially in contact with the inner cavity walls of the main cylinder, and the whole formed by the first receiving cavity and the second receiving cavity is contained in the main cylinder and forms a bias in the inner cavity space of the main cylinder.

4. The laparoscope filter according to claim 3, wherein, Each cover member is composed of at least two end cover members which are fitted together to form a whole, and the two end cover members are defined as an inner cover member close to the main cylinder and an outer cover member away from the main cylinder, wherein the inner cover member and the outer cover member are configured to form mutually matching welding ribs between the two end cover members which combine to form the cover member, and the welding ribs serve as partition ribs to separate the cover space formed by the abutment of the two end cover members into two independent and non-communicating cavities, and the hole column is formed on the welding ribs.

5. The insufflator filter according to any one of claims 2 to 4, wherein, Each of the independent channels forms an opening part on the two end surfaces of the cover member, and the opening part includes a hole-shaped opening part and an arc-shaped opening part, and the opening part and the independent channels combine to form at least one first channel with a hole-shaped opening as an output port and at least two second channels with an arc-shaped opening as an output port, and the input from the first channel on any one of the cover members flows through the main cylinder structure and is then input from the output port of the second channel on the other cover member and output from the input port of the second channel.

6. The insufflator filter of claim 5, wherein, The two ends of the main cylinder are defined as a gas input end and a smoke exhaust end, The cover member on the gas input end includes a first channel leading to the gas input cavity, a second channel communicating with the second flow channel on the smoke exhaust cavity, and another second channel communicating with the third flow channel; The cover member on the smoke exhaust end includes a first channel leading to the smoke exhaust cavity, a second channel communicating with the second flow channel on the gas input cavity, and another second channel communicating with the third flow channel.

7. The insufflator filter according to claim 6, wherein, The cover member on the docking end is formed with a docking part adapted to dock with the insufflator, and the cover member on the interface end is formed with an interface part adapted to interface with the pipeline of the docking puncture device, wherein The docking part includes at least three first connecting hole columns, each of which corresponds to each independent channel in the cover member on the docking end; The interface part includes at least three second connecting hole columns which are gathered together to form a whole, and each of the second connecting hole columns corresponds to each independent channel in the cover member on the interface end.

8. The insufflator filter according to claim 7, wherein The communication between each second channel and the first to third flow channels is configured such that the second channel is formed with an arc-triangle-shaped opening part, and the openings of the first to third flow channels which abut the second channel are also formed with consistent arc-triangle-shaped opening parts, so that the second channel and the first to third flow channels abut tightly.

9. The insufflator filter of claim 8, wherein, In use, the condensate baffle is located above the condensate area in the radial direction of the main cylinder, and the side surface of the condensate baffle facing the smoke input direction is formed with a plurality of annular ribs, and The condensate baffle is formed with a smoke inlet gap, and the smoke inlet gap is configured with a smoke blocking part, and the smoke blocking part is configured to partially extend further in the smoke input direction to form a groove-shaped smoke buffer part, and the groove of the smoke buffer part is partially blocked by an arc-shaped baffle to form the smoke blocking part.

10. The insufflator filter of claim 9, wherein, A drain hole is formed on the cavity wall of the second accommodating cavity, and faces the condensate area.

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