Intracavitary gas self-circulation filtering device for laparoscopic surgery and laparoscope equipped with the same

Abstract

The present application provides an intracavitary gas self-circulation filtering device for laparoscopic surgery, comprising: a first filter part (1), which has a first filter part air inlet (102) and a first filter part air outlet (103), the first filter part air inlet is connected to the human abdominal cavity; a power part (2), which is connected to the first filter part and has a power part air inlet (203) and a power part air outlet (202), the power part air inlet is connected to the first filter part through the first filter part air outlet, and the power part air outlet is connected to the human abdominal cavity; a shell (5), which has an opening and an internal space connected to the outside and accommodates the first filter part and the power part in the internal space; at least one second filter part (1005), which is connected to at least one of the first filter part air inlet and the power part air outlet. The technical solution provided by the present application has the advantages of avoiding pollution and high durability.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, in particular to the field of laparoscopes, and specifically provides an intracavitary gas self-circulation filtering device for laparoscopic surgery and a laparoscope equipped with the same. Background Art

[0002] Minimally invasive surgery refers to making multiple or single perforations on the human body surface, allowing the endoscope and operating instruments to enter the body cavity through the small holes. The operator operates the handle of the long-rod instrument outside the patient's body under the monitoring of the endoscope, and operates the head of the instrument inside the patient's body to perform lesion removal, suturing and other operations. After the operation, the endoscope and instruments are removed, and the small holes on the patient's body surface are sutured to complete the operation, thereby minimizing damage to the patient's healthy tissue. The medical instruments used in the operation are usually called laparoscopic surgical instruments, or laparoscopic electrodes. This type of surgical instrument mainly consists of a handle for the operator to hold, a slender rod that can be inserted into the body cavity, and a movable end effector (such as a surgical scalpel, scissors, tweezers, grasping instruments, cautery tools, etc.).

[0003] When using electrosurgical equipment for cutting or coagulation during laparoscopic surgery, a large amount of smoke will be generated. This smoke will blur the mirror of the endoscope, causing the display content on the monitor in the camera system to become blurred. This is a problem faced by laparoscopic surgery and requires an equipment cleaning device.

[0004] The commonly used method of smoke removal is to use the hospital's negative pressure equipment to extract it. Most of the smoke extracted is CO2 and odorous smoke gas and is directly discharged. While causing air pollution, it also reduces the air pressure in the abdominal cavity, which cannot meet the requirements of the surgical abdominal cavity space and will directly affect the success of the operation. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present application provides an intracavity gas self-circulation filtration device for laparoscopic surgery and a laparoscope equipped with the same. The intracavity gas self-circulation filtration device is installed with a filtration system, and the entire filtration system will not be reused, thus avoiding the problem of cross-infection between different patients; and the filtered gas can be circulated and input into the cavity to reduce the amount of gas used.

[0006] In a first aspect, some embodiments of the present application provide an intracavitary gas self-circulation filtration device for laparoscopic surgery, comprising: a first filter portion, which has a first filter portion air inlet and a first filter portion air outlet, the first filter portion air inlet being connected to the human abdominal cavity; a power portion, which is connected to the first filter portion and has a power portion air inlet and a power portion air outlet, the power portion air inlet being connected to the first filter portion through the first filter portion air outlet, and the power portion air outlet being connected to the human abdominal cavity; a shell, which has an opening and an internal space connected to the outside and accommodates the first filter portion and the power portion in the internal space; and at least one second filter portion, which is connected to at least one of the first filter portion air inlet and the power portion air outlet.

[0007] The embodiments of the present application provide a first filter unit and at least one second filter unit so that even if the filter element of the first filter unit is exhausted and fails during surgery, the second filter unit can be used for filtering, thereby improving the reliability and durability of the intracavitary gas self-circulation filtration device.

[0008] In some embodiments, the first filter unit has a connecting groove on the side opposite to the power unit; the power unit has at least one buckle on the side opposite to the first filter unit; the first filter unit and the power unit are connected by snapping the connecting groove and the buckle.

[0009] In some embodiments, the first filter portion has a slot on the side opposite to the shell; the shell has a latch tongue at a position corresponding to the slot on the inner side of the side opposite to the first filter portion; the first filter portion can be limited by the latch tongue and the slot so that the first filter portion cannot be detached from the shell.

[0010] In some embodiments, the shell includes an in-place detection portion, which is used to detect whether the first filter portion is installed in place in the shell; the in-place detection portion includes a contact, which is arranged at the bottom of the shell and is pressed by the first filter portion when the first filter portion is installed in place in the shell and sends a signal to indicate that the first filter portion is installed in place in the shell.

[0011] In some embodiments, the power unit includes a power head assembly, and a transmission shaft of the power head assembly is provided with a connection interface and is connected to a motor shaft of a motor located outside the housing.

[0012] In some embodiments, the head structure of the transmission shaft of the power head assembly is a cross structure, and is matched and connected with the cross structure of the motor shaft of the motor.

[0013] In some embodiments, a diaphragm structure, an umbrella-shaped support frame and an inclined axis structure are provided inside the power head assembly; the transmission shaft of the power head assembly is connected to the inclined axis structure; the transmission shaft of the power head assembly is mounted on an axis mounting seat provided outside the power head assembly through a bearing; sealing is performed between the power head assembly and the axis mounting seat by sequentially arranging an end face sealing gasket, an end face sealing ring and an axis rotation seal in a direction away from the power head assembly.

[0014] In some embodiments, a heat-insulating structure is provided around the pipeline at the air outlet of the power unit of the power unit, and a heat-insulating material is provided in the heat-insulating structure.

[0015] In some embodiments, the intracavitary gas self-circulation filtration device also includes an air pressure detection device, which includes: a first gas flow sensor, which is arranged near the air inlet of the first filter part and detects the intake gas flow flowing through the air inlet of the first filter part in real time per unit predetermined time; a second gas flow sensor, which is arranged near the air outlet of the power part and detects the outlet gas flow flowing through the air outlet of the power part in real time per unit predetermined time; a control part, which is arranged in the shell and controls the speed of extracting air from the human abdominal cavity based on the ratio of the exhaust gas volume calculated from the intake gas flow detected by the first gas flow sensor and the delivery gas volume calculated from the exhaust gas flow detected by the second gas flow sensor.

[0016] In a second aspect, some embodiments of the present application provide a laparoscope, comprising: the above-mentioned intracavity gas self-circulation filtration device; a first puncture device, which is connected to the intracavity gas self-circulation filtration device and inserted into the human abdominal cavity; and a second puncture device, which is connected to the intracavity gas self-circulation filtration device and inserted into the human abdominal cavity; one of the first puncture device and the second puncture device inhales air from the human abdominal cavity, and the other of the first puncture device and the second puncture device blows air into the human abdominal cavity and forms a clear surgical field area near the position of the air outlet as an air curtain barrier area.

[0017] The present application provides an intracavitary gas self-circulation filtering device for laparoscopic surgery. By providing a first filter part and at least one second filter part, even if the filter element of the first filter part is exhausted and fails during the operation, the second filter part can be used for filtering, thereby improving the reliability of the intracavitary gas self-circulation filtering device. In addition, the intracavitary gas self-circulation filtering device is equipped with a filtering system, and the entire filtering system will not be reused, thus avoiding the problem of cross infection of different patients; and the filtered gas can be circulated and input into the cavity, reducing the amount of gas used.

[0018] In addition, the intracavitary gas self-circulation filtration device for laparoscopic surgery provided by the present application has the following good effects: it is easy for medical staff to use and operate during laparoscopic surgery, the air pressure in the abdominal cavity is highly stable during the entire operation, and the gas circulation filtration effect is good, thereby improving the efficiency and quality of the operation; through the smoke exhaust filtration structure, a method of quickly removing smoke from intra-abdominal surgery is utilized to achieve clarity of the surgical endoscope display system; through the designed disposable core module, zero infection in laparoscopic surgery is achieved; and through gas filtration and self-circulation devices, the amount of gas used is reduced, thereby saving surgical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the description of the embodiments or the prior art are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of a laparoscope including an intracavitary gas self-circulation filtering device involved in the present application;

[0022] Figure 2 This is an overall stereoscopic view of the housing of the intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0023] Figure 3 A cross-sectional view of a second filter portion in the intracavitary gas self-circulation filter device for laparoscopic surgery involved in the present application;

[0024] Figure 4 A three-dimensional cross-sectional view of a second filter portion in the intracavitary gas self-circulation filter device for laparoscopic surgery involved in the present application;

[0025] Figure 5 A schematic diagram of the self-circulating gas flow of the intracavitary gas self-circulating filtration device for laparoscopic surgery involved in the present application;

[0026] Figure 6 This is an overall assembly diagram of the housing of the intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0027] Figure 7 A schematic diagram of gas flow in a housing of an intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0028] Figure 8It is a schematic diagram of the separation state of the first filter part and the power part of the intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0029] Fig. 9 Another schematic diagram of the separation state of the first filter unit and the power unit of the intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0030] Fig.10 A schematic diagram of the connection state of the first filter unit and the power unit of the intracavitary gas self-circulation filter device for laparoscopic surgery involved in the present application;

[0031] Fig.11 It is a rear view of the first filter part and the power part of the intracavitary gas self-circulation filter device for laparoscopic surgery involved in the present application;

[0032] Fig.12 This is an internal structural diagram of a housing of an intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0033] Fig.13 A schematic diagram of a power head assembly of an intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0034] Fig.14 A three-dimensional diagram of a power head assembly of an intracavitary gas self-circulation filtering device for laparoscopic surgery involved in the present application;

[0035] Fig.15 The structure and cross-sectional view of the motor module of the intracavitary gas self-circulation filtering device for laparoscopic surgery involved in this application;

[0036] Fig.16 A distal cross-sectional view of a first puncture device in a laparoscope involved in the present application;

[0037] Fig.17 This is a cross-sectional view of the first puncture device in the laparoscope involved in the present application.

[0038] In the figure: 1-first filter part, 2-power part, 3-motor, 4-position detection part, 5-housing, 6-locking part, 7-first puncture device, 8-surgical instrument, 9-endoscope, 101-filter element structure, 102-first filter part air inlet, 103-first filter part air outlet, 104-card slot, 105-anti-misinstallation slot, 106-connecting slot, 110-first gas flow sensor, 201-power head assembly, 202-power part air outlet, 203-power Air inlet, 204- buckle, 205-power limit sleeve, 206-insulation structure, 210-second gas flow sensor, 301-motor sleeve, 302-motor shaft, 401-contact, 501-protrusion, 601-tongue, 701-second puncture device, 1001-laparoscopy, 1002-airflow direction, 1003-human abdominal cavity, 1003A-clear area of ​​​​the surgical field, 1004-pipeline, 1005-second filter, 2010-power Head assembly outlet, 2011-connecting pipe, 2012-diaphragm structure, 2012A-umbrella support frame, 2012B-oblique axis structure, 2013-power head assembly connecting shaft, 2014-cover plate, 2015-axis mounting seat, 2016-bearing, 2017-transmission shaft, 2017A-cross structure, 2018-end face sealing ring, 2019-end face sealing pad, 2019A-axis rotation seal, 7001-airflow channel, 7002-support diaphragm Plate, 7003-first sealing part, 7004-second sealing part, 7005-air flow inlet and outlet, 7006-instrument inlet, 10051-second filter part air inlet, 10052-liquid leakage valve cover, 10053-guide cone plate, 10054-guide fan blades, 10055-liquid leakage channel, 10056-liquid storage space, 10057-filter element layer, 10058-second filter part air outlet, 10059-second filter part air flow direction. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the embodiments of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from the ways described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0041] At least in order to achieve the above-mentioned technical problem of avoiding pollution and having high reliability and durability, an embodiment of the present application provides an intracavitary gas self-circulation filtration device for laparoscopic surgery, comprising: a first filter part, which has a first filter part air inlet and a first filter part air outlet, and the first filter part air inlet is connected to the human abdominal cavity; a power part, which is connected to the first filter part and has a power part air inlet and a power part air outlet, and the power part air inlet is connected to the first filter part through the first filter part air outlet, and the power part air outlet is connected to the human abdominal cavity; a shell having an opening and an internal space connected to the outside and accommodating the first filter part and the power part in the internal space; and at least one second filter part, which is connected to at least one of the first filter part air inlet and the power part air outlet.

[0042] It can be understood that the intracavitary gas self-circulation filtering device for laparoscopic surgery provided by the embodiment of the present application can effectively improve the technical defects existing in the filtering device using related technologies.

[0043] Combine the following Figure 1-Figure 17 The above-mentioned intracavitary gas self-circulating filtering device and the laparoscope equipped therewith are exemplarily described, and the structures of the intracavitary gas self-circulating filtering device and the laparoscope are exemplarily described. It should be noted that those skilled in the art can design different intracavitary gas self-circulating filtering device and the laparoscope according to specific needs based on the concept of the above-mentioned intracavitary gas self-circulating filtering device and the laparoscope. Figure 1-Figure 17 devices and equipment.

[0044] First, briefly introduce the Figure 1-Figure 17 corresponding components or units.

[0045] Reference numeral 1 is used to characterize the first filter part, which is a filter cartridge compartment equipped with a filter cartridge; reference numeral 2 is used to characterize the power part, which is a power module; reference numeral 3 is used to characterize the motor, which can transmit power to the power part; reference numeral 4 is used to characterize the in-place detection part, which is an in-place detection module, and is a component used to detect whether the first filter part (filter cartridge compartment) is installed in place; reference numeral 5 is used to characterize the shell, which serves as a chamber to house the first filter part (filter cartridge compartment) and the power part (power module); reference numeral 6 is used to characterize the locking part, which is a locking module, which can combine the first filter part and the power part to form a core module as a whole and limit it in the shell to prevent the core module from moving out; reference numeral 7 is used to characterize the first puncture device; reference numeral 8 is used to characterize the hand surgical instrument; reference numeral 9 is used to represent an endoscope; reference numeral 101 is used to represent a filter element structure, which is a filter element module and may include a pre-filter layer, an adsorption layer, an ultra-high efficiency filter layer, etc.; reference numeral 102 is used to represent the air inlet of the first filter unit; reference numeral 103 is used to represent the air outlet of the first filter unit; reference numeral 104 is used to represent a card slot; reference numeral 105 is used to represent an anti-misinstallation slot; reference numeral 106 is used to represent a connecting slot; reference numeral 110 is used to represent a first gas flow sensor; reference numeral 201 is used to represent a power head assembly; reference numeral 202 is used to represent the air outlet of the power unit; reference numeral 203 is used to represent the air inlet of the power unit; reference numeral 204 is used to represent a buckle; reference numeral 205 is used to represent a limit sleeve of the power unit ; Reference numeral 206 is used to characterize the heat preservation structure; Reference numeral 210 is used to characterize the second gas flow sensor; Reference numeral 301 is used to characterize the motor sleeve; Reference numeral 302 is used to characterize the motor shaft; Reference numeral 401 is used to characterize the contact; Reference numeral 501 is used to characterize the protrusion; Reference numeral 601 is used to characterize the tongue; Reference numeral 701 is used to characterize the second puncture device; Reference numeral 1001 is used to characterize the laparoscope; Reference numeral 1002 is used to characterize the airflow direction; Reference numeral 1003 is used to characterize the human abdominal cavity; Reference numeral 1003A is used to characterize the clear area of ​​the surgical field; Reference numeral 1004 is used to characterize the pipeline; Reference numeral 1005 is used to characterize the second filter part; Reference numeral 2010 is used to characterize the power head assembly Air outlet; reference numeral 2011 is used to represent the connecting pipe port; reference numeral 2012 is used to represent the diaphragm structure; reference numeral 2012A is used to represent the umbrella-shaped support frame; reference numeral 2012B is used to represent the inclined axis structure; reference numeral 2013 is used to represent the power head assembly connecting shaft; reference numeral 2014 is used to represent the cover plate; reference numeral 2015 is used to represent the shaft mounting seat; reference numeral 2016 is used to represent the bearing; reference numeral 2017 is used to represent the transmission shaft; reference numeral 2017A is used to represent the cross structure; reference numeral 2018 is used to represent the end face sealing ring; reference numeral 2019 is used to represent the end face sealing gasket; reference numeral 2019A is used to represent the shaft rotation seal; reference numeral 7001 is used to represent the air flow channel;Reference numeral 7002 is used to represent the supporting baffle; reference numeral 7003 is used to represent the first sealing part; reference numeral 7004 is used to represent the second sealing part; reference numeral 7005 is used to represent the airflow inlet and outlet; reference numeral 7006 is used to represent the instrument inlet; reference numeral 10051 is used to represent the air inlet of the second filter part; reference numeral 10052 is used to represent the liquid leakage valve cover; reference numeral 10053 is used to represent the guide cone plate; reference numeral 10054 is used to represent the guide fan blade; reference numeral 10055 is used to represent the liquid leakage channel; reference numeral 10056 is used to represent the liquid storage space; reference numeral 10057 is used to represent the filter element layer; reference numeral 10058 is used to represent the air outlet of the second filter part; reference numeral 10059 is used to represent the airflow direction of the second filter part. ;

[0046] Secondly, the intracavity gas self-circulation filtering device of some embodiments of the present application is exemplified in combination with the above-mentioned figure marks.

[0047] like Figure 1 and Figure 2 As shown, the intracavitary gas self-circulation filtration device for laparoscopic surgery involved in the present application includes: a first filter part 1, which has a first filter part air inlet 102 and a first filter part air outlet 103, and the first filter part air inlet 102 is connected to the human abdominal cavity 1003; a power part 2, which is connected to the first filter part 1 and has a power part air inlet 203 and a power part air outlet 202, and the power part air inlet 203 is connected to the first filter part 1 through the first filter part air outlet 103, and the power part air outlet 202 is connected to the human abdominal cavity; a shell 5, which has an opening and an internal space connected to the outside and accommodates the first filter part 1 and the power part 2 in the internal space; and at least one second filter part 1005, which is connected to at least one of the first filter part air inlet 102 and the power part air outlet 202.

[0048] The intracavity gas self-circulation filtering device of the present application comprises a housing 5 as a chamber, Figure 2The shell 5 shown is a rectangular box-shaped, but not limited to this, and other shapes of shells 5 such as cylindrical can also be used. The first filter part 1 (filter element warehouse) and the power part 2 (power module) are loaded into the shell 5 as a chamber, and the first filter part 1 is connected with the power part 2 and integrated as a disposable core module. The shell 5 (chamber) serves as a fixed warehouse body of the disposable core module, mainly for positioning and storage, and can fix and position the first filter part 1 (filter element warehouse). The filter element structure 101 of the first filter part 1 can be provided with filter material structures such as a pre-filter layer, an adsorption layer, and an ultra-high efficiency filter layer. At the bottom of the first filter part 1, a connecting pipe port 2011 is provided that is connected to the air outlet 103 of the first filter part, and is connected to the power part air inlet 203 of the power part 2. Here, the above-mentioned core module is a square structure, but a circular structure can also be adopted.

[0049] Here, the second filter unit 1005 may be one, connected only to the first filter unit air inlet 102 or the power unit air outlet 202. The second filter unit 1005 may be two (eg Figure 1 As shown in the figure), they are respectively connected to the first filter part air inlet 102 and the power part air outlet 202. In addition, there can be more than three second filter parts 1005, and the number can be equally or unequally connected to the first filter part air inlet 102 and / or the power part air outlet 202. The second filter part 1005 can also be a disposable module. The second filter part 1005 can be directly connected to the first filter part air inlet 102 and / or the power part air outlet 202 (as shown in the figure). Figure 1 As shown), it can also be connected to the first filter part air inlet 102 and / or the power part air outlet 202 through a pipeline and a switching valve, etc., which is not particularly limited here. For example, the second filter part 1005 can be connected to the first filter part air inlet 102 and / or the power part air outlet 202 through a switching valve, and the switching valve is usually in a closed state and the gas from the human abdominal cavity 1003 does not pass through the second filter part 1005 but only passes through the pipeline connected in parallel with the second filter part 1005; however, when the filter material in the first filter part 1 is exhausted during surgery and cannot play a filtering role, the user (such as a doctor) can open the switching valve to allow the gas from the human abdominal cavity 1003 to pass through the second filter part 1005, so that the second filter part 1005 replaces the first filter part 1 to complete the filtering function. In addition, in the case of multiple second filter parts 1005, each second filter part 1005 can be set with filter material specifically for different specific components in the gas (such as smoke) discharged from the human abdominal cavity 1003. For example, two second filter units 1005 are provided, one second filter unit 1005 having a particularly good filtering and absorbing effect on component A (such as blood) in the gas discharged from the human abdominal cavity 1003, and the other second filter unit 1005 having a particularly good filtering and absorbing effect on component B (such as oil) in the gas (such as smoke) discharged from the human abdominal cavity 1003.

[0050] like Figure 3 As shown, the second filter part 1005 includes: a second filter part air inlet 10051; a liquid leakage valve cover 10052; a guide cone plate 10053; a guide fan blade 10054; a liquid leakage channel 10055; a liquid storage space 10056; a filter element layer 10057; and a second filter part air outlet 10058. In addition, Figure 3 In the figure, the arrow indicates the airflow direction 10059 of the second filter unit 1005.

[0051] In addition, the filter element layer 10057 of the second filter unit 1005 can adopt the same structure as the filter element structure 101 of the first filter unit 1.

[0052] Reference Figure 3 and Figure 4 To illustrate the working principle of the second filter part 1005: the gas discharged from the human abdominal cavity 1003 and containing, for example, smoke, enters the second filter part 1005 from the second filter part air inlet 10051; it is guided by the guide cone plate 10053 and passes through the guide blades 10054, causing the guide blades 10054 to rotate to form a cyclone effect; this cyclone effect centrifugally separates the large particles of smoke, water droplets and oil droplets contained in the gas, and the separated liquid accumulates on the inner wall of the second filter part 1005 and flows into the liquid storage space 10056 (the liquid leakage valve cover 10052 can be opened to discharge the liquid in the liquid leakage channel 10055); the gas (which may contain smoke) after passing through the guide blades 10054 continues to pass through the filter element layer 10057 and flows out from the second filter part air outlet 10058, thereby completing the filtration performed by the second filter part 1005.

[0053] Figure 5 This is the gas self-circulation gas path diagram of the entire gas self-circulation filtration device in the cavity. Figure 5As shown, the first filter part 1 in the disposable core module is provided with an air inlet channel, which is communicated with the human abdominal cavity 1003 through, for example, a pipeline 1004 (when the second filter part 1005 is connected, it is also communicated with the second filter part 1005 as needed); the power part 2 is provided with an exhaust channel, which is communicated with the human abdominal cavity 1003 through the pipeline 1004 (when the second filter part 1005 is connected, it is also communicated with the second filter part 1005 as needed); and the first filter part 1 is connected with the power part 2; in the self-circulating smoke exhaust process, when an active instrument (such as a surgical instrument 8) is used for laparoscopic surgery, gas containing, for example, smoke will be generated, and the intracavitary gas self-circulating filtering device will first draw the gas containing, for example, smoke into the first filter part 1 through the pipeline 1004, and after filtering by the filter element in the first filter part 1, the gas passes through the power part 2 and is then sent into the human abdominal cavity 1003 along the pipeline 1004, forming a set of self-circulating gas path filtering system.

[0054] In summary, the connection is specifically described as follows: the first filter part air inlet 102 of the first filter part 1 is connected to the second filter part 1005, which is connected to the first puncture device 7 of the laparoscope 1001 through the pipeline 1004 to the human abdominal cavity 1003; the power part air outlet 202 of the power part 2 is connected to the second filter part 1005, which is connected to the second puncture device 701 of the laparoscope 1001 through the pipeline 1004, and then connected to the human abdominal cavity 1003 (refer to Figure 1 ).

[0055] like Figure 6 As shown, a heat preservation structure 206 is arranged around the pipeline at the power unit air outlet 202 of the power unit 2, and a heat preservation material is arranged in the heat preservation structure 206.

[0056] That is, Figure 6 As shown, a heat preservation structure 206 is provided around the pipeline at the power part gas outlet 202 of the power part 2 (power module) (for example, in the entire circumference), and a heat preservation material is provided in the heat preservation structure 206 to insulate the gas to keep the gas temperature constant.

[0057] like Figure 6As shown, the intracavitary gas self-circulation filtration device also includes an air pressure detection device, which includes: a first gas flow sensor 110, which is arranged near the first filter part air inlet 102 and detects in real time the intake gas flow flowing through the first filter part air inlet 102 per unit predetermined time; a second gas flow sensor 210, which is arranged near the power part air outlet 202 and detects in real time the outlet gas flow flowing through the power part air outlet 202 per unit predetermined time; a control unit (not shown), which is arranged in the shell 5 and controls the speed of exhausting gas from the human abdominal cavity 1003 based on the ratio of the exhaust gas volume calculated from the intake gas flow detected by the first gas flow sensor 110 and the delivery gas volume calculated from the exhaust gas flow detected by the second gas flow sensor 210. That is, when the ratio of the volume of extracted gas calculated from the intake gas flow detected by the first gas flow sensor 110 to the volume of delivered gas calculated from the exhaust gas flow detected by the second gas flow sensor 210 is approximately 1, it means that the amount of gas extracted from the human abdominal cavity 1003 and the amount of gas delivered to the human abdominal cavity 1003 per unit time are roughly equal, and it can be considered that the pressure in the human abdominal cavity 1003 remains roughly unchanged and is normal pressure; when the ratio of the volume of extracted gas calculated from the intake gas flow detected by the first gas flow sensor 110 to the volume of delivered gas calculated from the exhaust gas flow detected by the second gas flow sensor 210 is greater than, for example, 1.1 (the threshold value can be freely set according to actual conditions, and can also be set to 1.05, 1.15, 1.2, etc.), it can be considered that the pressure in the human abdominal cavity 1003 remains roughly unchanged and is normal pressure. It is considered that the pressure in the human abdominal cavity 1003 decreases due to the large amount of gas being extracted and is in a low-pressure state, so it is necessary to reduce the speed of extracting gas from the human abdominal cavity 1003 to restore the pressure in the human abdominal cavity 1003 to normal pressure; when the ratio of the volume of extracted gas calculated from the intake gas flow detected by the first gas flow sensor 110 to the volume of supplied gas calculated from the outlet gas flow detected by the second gas flow sensor 210 is less than, for example, 0.9 (the threshold value can be freely set according to actual conditions, and can also be set to 0.95, 0.85, 0.8, etc.), it can be considered that the pressure in the human abdominal cavity 1003 increases due to the large amount of gas being supplied and is in a high-pressure state, so it is necessary to increase the speed of extracting gas from the human abdominal cavity 1003 to restore the pressure in the human abdominal cavity 1003 to normal pressure.

[0058] Of course, the structure of the air pressure detection device is not limited to the above structure, and an air pressure detection device with the following structure can also be used: air pressure sensors are installed near the air inlet 102 of the first filter part and near the air outlet 202 of the power part, respectively, and the real-time pressure is reflected by the air pressure sensor. Then, the pressure value is compared by software, and then the air pressure regulating valves of the air inlet 102 of the first filter part and the air outlet 202 of the power part are controlled by a programmable controller (PLC) respectively to achieve air pressure balance between the air inlet and the air outlet, and to achieve the same air pressure values ​​for the air inlet and the air outlet, thereby achieving a self-circulating effect of air pressure balance.

[0059] like Figure 7 As shown, in the shell 5 of the intracavitary gas self-circulation filtration device, the direction of gas flow is shown by the arrow in the figure. The gas flows out from the human abdominal cavity 1003 and enters the first filter part 1. After being filtered by the filter element of the first filter part 1, the gas flows into the power part 2, and then flows out of the power part 2 through the internal pipeline, and finally enters the human abdominal cavity 1003 again.

[0060] like Figure 8 and Fig. 9 as well as Fig.10 As shown, the first filter unit 1 has a connecting groove 106 on the side opposite to the power unit 2; the power unit 2 has at least one buckle 204 on the side opposite to the first filter unit 1; the first filter unit 1 and the power unit 2 are connected as a whole by the connecting groove 106 and the buckle 204 (refer to Fig.10 Here, the number of the buckles 204 may be one, two, three, four or more.

[0061] Furthermore, if Figure 8 , Fig. 9 and Fig.11 As shown, the connection and fixation are performed by the buckle structure composed of the connecting groove 106 and the buckle 204 ( Figure 8 , Fig. 9 ), at the same time, the first filter unit air outlet 103 is connected to the power unit air inlet 203 ( Fig.11 ), so that the first filter unit 1 and the power unit 2 are connected.

[0062] like Fig. 9 and Fig.12 As shown, the anti-misinstallation groove 105 and the protrusion 501 of the shell 5 cooperate with each other. Only when the disposable core module composed of the first filter part 1 and the power part 2 is installed in the correct position and direction, the core module can be put into the shell 5, otherwise the protrusion 501 will prevent the core module from entering the shell 5, thereby forming an anti-misinstallation mechanism.

[0063] like Fig.11 and Fig.12As shown, the power unit limit sleeve 205 is a component connected to the motor shaft sleeve 301, forming a rough positioning mechanism connecting the core module and the motor shaft 302, thereby providing the prerequisite for the precise positioning connection between the transmission shaft 2017 and the motor shaft 302.

[0064] like Fig.12 (See also Figure 6 , Fig. 9 ), the first filter portion 1 has a slot 104 on the side opposite to the shell 5; the shell 5 has a latch 601 at a position corresponding to the slot 104 on the inner side of the side opposite to the first filter portion 1; the first filter portion 1 can be limited by the latching connection between the latch 601 and the slot 104 so that the first filter portion 1 cannot be detached from the shell 5 after being installed in the shell 5.

[0065] That is, the locking part 6 (locking module) can limit the core module formed by combining the first filter part 1 and the power part 2 into an integral body in the housing 5 to prevent the core module from being removed. In addition, after the locking part 6 (locking module) is unlocked, the disposable core module can be taken out for replacement.

[0066] like Fig.12 (See also Figure 2 , Figure 6 ), the shell 5 includes an in-place detection unit 4, which is used to detect whether the first filter unit 1 is installed in place in the shell 5; the in-place detection unit 4 includes a contact 401, which is arranged at the bottom of the shell 5 and is pressed by the first filter unit 1 when the first filter unit 1 is installed in place in the shell 5 and sends a signal to indicate that the first filter unit 1 is installed in place in the shell 5.

[0067] Specifically, the in-place detection unit 4 (in-place signal module) is a component that detects whether the first filter unit 1 is installed in place, wherein the contact 401 is a columnar structure (but it may also be other structural forms); when the first filter unit 1 is installed to the bottom, the compression contact 401 will be pressed, and the column head will move, thereby connecting the circuit and transmitting a signal to the host (not shown), indicating that the first filter unit 1 is installed in place.

[0068] The shell 5 positions and connects the connecting shaft (drive shaft 2017) of the power unit 2 (power module) and the connecting shaft (motor shaft 302) of the motor through, for example, a quick connection interface, and the power is transmitted by the motor 3, and the power is transmitted to the umbrella module (umbrella support frame 2012A) described later through the drive shaft 2017, thereby causing the diaphragm structure 2012 described later to move up and down, thereby realizing the function of outputting power.

[0069] like Fig.13 (See also Figure 6), a diaphragm structure 2012, an umbrella-shaped support frame 2012A and an inclined axis structure 2012B are provided inside the power head assembly 201; a transmission shaft 2017 of the power head assembly 201 is connected to the inclined axis structure 2012B; the transmission shaft 2017 of the power head assembly 201 is mounted on a shaft mounting seat 2015 arranged outside the power head assembly 201 through a bearing 2016; sealing is performed between the power head assembly 201 and the shaft mounting seat 2015 by sequentially arranging an end face sealing gasket 2019, an end face sealing ring 2018 and an axis rotation seal 2019A in a direction away from the power head assembly 201.

[0070] In addition, if Fig.13 As shown, in the power head assembly 201, a shaft seal assembly structure is provided at the circumference of the transmission shaft 2017 (see Fig.13 ), preventing gas from leaking from here and also ensuring the pressure value of the gas in the power head assembly 201.

[0071] Furthermore, if Fig.13 As shown, a diaphragm structure 2012, an umbrella-shaped support frame 2012A and an inclined axis structure 2012B are provided inside the power head assembly 201, which work together to form the movement of the diaphragm structure 2012, thereby sucking air out of the power shaft.

[0072] like Fig.14 and Fig.15 (See also Figure 6 , Fig.12 ), the power unit 2 includes a power head assembly 201, and the transmission shaft 2017 of the power head assembly 201 is provided with a connection interface and is connected to the motor shaft 302 of the motor 3 located outside the shell 5.

[0073] like Fig.14 and Fig.15 As shown, the head structure of the transmission shaft 2017 of the power head assembly 201 is a cross structure, and is matched with the cross structure of the motor shaft 302 of the motor 3 to be connected.

[0074] Here, if Fig.14 and Fig.15As shown, the head structure of the transmission shaft 2017 in the power head assembly is set as a cross structure, which cooperates with the cross-shaped structure of the motor shaft 302 to form a quick connection structure. This structure realizes that when the core module (composed of the first filter unit 1 and the power unit 2) cooperates with the housing 5, the transmission shaft 2017 and the motor shaft 302 can be quickly connected. In addition, chamfers are provided in the cross structure, so that there is no face-to-face limit between the two parts during docking, but the motor shaft 302 or the transmission shaft 2017 is slightly rotated by chamfering, and then the cross structure is mutually matched and connected, so as to effectively transmit power. Here, the aforementioned rough positioning is the positioning of the motor sleeve 301 and the power unit limit sleeve 205, and the fine positioning is the positioning of the transmission shaft 2017 and the motor shaft 302. Positioning ensures the concentricity of the shaft, ensures the positioning accuracy, realizes the smooth movement of the shaft, and efficiently transmits power. Of course, the above-mentioned quick connection structure is not limited to the cross structure, and a one-word structure can also be adopted.

[0075] In summary, the transmission shaft 2017 is connected to the oblique shaft structure 2012B (i.e., the oblique shaft module) to transmit torque power. The transmission shaft 2017 is also connected to the motor shaft 302 to achieve power transmission. The transmission shaft 2017 needs to be sealed, so Fig.13 In the direction away from the power head assembly 201 (i.e., from left to right), an end face sealing gasket 2019, an end face sealing ring 2018, and an axis rotation seal 2019A are sequentially arranged to ensure that there is no air leakage inside the power head assembly 201. At the same time, a bearing 2016 is arranged on the transmission shaft 2017 to support the transmission shaft 2017, thereby reducing friction, making the rotation smoother, and ensuring the smooth operation of the power head assembly 201.

[0076] In addition, if Figure 1 As shown, the present application provides a laparoscope 1001, comprising the above-mentioned intracavitary gas self-circulation filtering device.

[0077] like Figure 1 As shown, the laparoscope 1001 also includes a first puncture device 7 and a second puncture device 701. The first puncture device 7 and the second puncture device 701 have the same structure, different specifications, and different functions. The first puncture device 7 is a puncture sleeve of the surgical instrument 8, and its main function is to absorb and discharge the smoke-containing gas generated by the active instrument (such as the surgical instrument 8, etc.) during operation from the human abdominal cavity 1003. The position of the suction port of the first puncture device 7 can be adjusted and can be close to and away from the forceps end of the active surgical instrument 8. The second puncture device 701 is a puncture sleeve of the endoscope 9, and it has the following functions: 1. Sending the filtered gas back to the human abdominal cavity 1003; 2. By positioning the air outlet of the second puncture device 701 close to the lens end of the endoscope 9 and blowing air continuously, a gas bubble as shown in the figure is formed. Figure 1The clear surgical field area 1003A shown (i.e., the smoke generated by the active surgical instrument 8 is blown away and a continuous high-speed airflow area is formed to maintain a clear field of vision) is also called an air curtain barrier area. Due to the protection of the air curtain barrier, smoke, oil mist, etc. are isolated, thereby achieving a clear surgical field area. At the same time, the first puncture device 7 and the second puncture device 701 cooperate with the above-mentioned intracavitary gas self-circulation filter device to form a gas self-circulation system for the gas in the human abdominal cavity. In addition, without limitation to the above content, on the contrary, the first puncture device 7 can also be used as the puncture cannula of the endoscope 9, and the second puncture device 701 can be used as the puncture cannula of the surgical instrument 8.

[0078] like Fig.16 , 17 As shown, the structure of the first puncture device 7 includes: an airflow channel 7001; a supporting partition 7002; a first sealing portion 7003; a second sealing portion 7004; an airflow inlet and outlet 7005; and an instrument inlet 7006. Fig.16 As shown, at the distal end of the first puncture device 7, the support partition 7002 plays a limiting role. The surgical instrument 8 (or endoscope 9) is set at the center of the puncture sleeve by supporting the partition 7002, so that a uniform air flow channel can be formed. Operations such as exhaust and air supply can be performed through the air flow channel. The first puncture device 7 can have a variety of sizes to adapt to different surgical instruments 8 and tools, and the lengths of the puncture sleeves are also different. The structure of the second puncture device 701 can be the same as that of the first puncture device 7.

[0079] During the laparoscopic filtering operation, the air inlet of the puncture cannula connected to the active surgical instrument 8 can also be close to the forceps head of the surgical instrument 8. When smoke is generated by the electrode operation of the surgical instrument 8, the smoke can be quickly sucked out at a close distance to ensure a clear surgical field of view.

[0080] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0081] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0082] For those skilled in the art, any modifications and changes made according to the above-mentioned implementation methods of the present application should be included in the protection scope of the present application without departing from the purpose of the present application.

Claims

1. A laparoscopic surgery intracavitary gas self-circulation filtering device, characterized in that: include: A first filter part (1), comprising a first filter part air inlet (102) and a first filter part air outlet (103), wherein the first filter part air inlet (102) is in communication with the abdominal cavity (1003) of a human body; a power unit (2), which is connected to the first filter unit (1) and has a power unit air inlet (203) and a power unit air outlet (202), wherein the power unit air inlet (203) is in communication with the first filter unit (1) via the first filter unit air outlet (103), and the power unit air outlet (202) is in communication with the human abdominal cavity (1003); A housing (5) having an opening and an internal space communicating with the outside and accommodating the first filter part (1) and the power part (2) in the internal space; the housing (5) comprises a position detection part (4), the position detection part (4) being used to detect whether the first filter part (1) is installed in place in the housing (5); and At least one second filter unit (1005), which is connected to at least one of the first filter unit air inlet (102) and the power unit air outlet (202) through a switching valve, the second filter unit (1005) is connected to the pipeline in parallel, when the switching valve is closed, the gas from the human abdominal cavity (1003) does not pass through the second filter unit (1005) but only passes through the parallel connection pipeline, when the switching valve is opened, the gas from the human abdominal cavity (1003) passes through the second filter unit (1005); The second filter part (1005) comprises a second filter part air inlet (10051); a liquid leakage valve cover (10052); a guide cone plate (10053); a guide fan blade (10054); a liquid leakage channel (10055); a liquid storage space (10056); a filter element layer (10057); and a second filter part air outlet (10058); gas discharged from the human abdominal cavity (1003) enters the second filter part from the second filter part air inlet (10051) The gas is guided by the guide cone plate (10053) and passes through the guide blade (10054), so that the guide blade (10054) rotates, thereby forming a cyclone effect to separate the gas; the separated liquid accumulates on the inner wall of the second filter part (1005) and flows into the liquid storage space (10056); the gas after passing through the guide blade (10054) continues to pass through the filter element layer (10057) and flows out from the gas outlet (10058) of the second filter part; A heat-insulating structure (206) is provided around the pipeline at the power unit air outlet (202) of the power unit (2), and a heat-insulating material is provided in the heat-insulating structure (206).

2. The intracavity gas self-circulation filtering device according to claim 1, characterized in that: The first filter part (1) has a connecting groove (106) on a side surface opposite to the power part (2); The power part (2) has at least one buckle (204) on a side surface opposite to the first filter part (1); The first filter part (1) and the power part (2) are connected by snapping the connection groove (106) and the buckle (204).

3. The intracavity gas self-circulation filtering device according to claim 1, characterized in that: The first filter portion (1) has a slot (104) on a side surface opposite to the housing (5); The housing (5) has a latch tongue (601) at a position corresponding to the latch groove (104) on the inner side of the side surface opposite to the first filter portion (1); The first filter part (1) can be limited by the engagement of the latch tongue (601) and the latch groove (104) so ​​that the first filter part (1) cannot be separated from the housing (5).

4. The intracavity gas self-circulation filtering device according to claim 1, characterized in that: The in-position detection portion (4) comprises a contact (401), which is arranged at the bottom of the shell (5) and is pressed by the first filter portion (1) when the first filter portion (1) is installed in place in the shell (5) and sends a signal to indicate that the first filter portion (1) is installed in place in the shell (5).

5. The intracavity gas self-circulation filtering device according to claim 1, characterized in that: The power unit (2) comprises a power head assembly (201), wherein a transmission shaft (2017) of the power head assembly (201) is provided with a connection interface and is connected to a motor shaft (302) of a motor (3) located outside the housing (5).

6. The intracavity gas self-circulation filtering device according to claim 5, characterized in that: The head structure of the transmission shaft (2017) of the power head assembly (201) is a cross structure, and is matched with the cross structure of the motor shaft (302) of the motor (3) to be connected.

7. The intracavity gas self-circulation filtering device according to claim 5, characterized in that: The power head assembly (201) is provided with a diaphragm structure (2012), an umbrella-shaped support frame (2012A) and an oblique axis structure (2012B) inside; The transmission shaft (2017) of the power head assembly (201) is connected to the oblique axis structure (2012B); The transmission shaft (2017) of the power head assembly (201) is mounted on a shaft mounting seat (2015) arranged outside the power head assembly (201) via a bearing (2016); Sealing is performed between the power head assembly (201) and the shaft mounting seat (2015) by sequentially arranging an end face sealing gasket (2019), an end face sealing ring (2018), and a shaft rotating seal (2019A) in a direction away from the power head assembly (201).

8. The intracavity gas self-circulation filtering device according to claim 1, characterized in that: The intracavity gas self-circulation filtering device further comprises an air pressure detection device, and the air pressure detection device comprises: A first gas flow sensor, which is arranged near the first filter portion air inlet (102) and detects in real time the flow of intake gas flowing through the first filter portion air inlet (102) per predetermined unit time; A second gas flow sensor, which is arranged near the power unit gas outlet (202) and detects in real time the outlet gas flow rate flowing through the power unit gas outlet (202) per unit predetermined time; A control unit is arranged in the shell (5) and controls the speed of extracting gas from the human abdominal cavity (1003) based on the ratio of the exhaust gas volume calculated from the intake gas flow detected by the first gas flow sensor and the delivery gas volume calculated from the exhaust gas flow detected by the second gas flow sensor.

9. A laparoscope, characterized in that: include: The intracavity gas self-circulation filtering device according to any one of claims 1 to 8; A first puncture device (7) is connected to the intracavitary gas self-circulation filtering device and is inserted into the human abdominal cavity (1003). The first puncture device (7) specifically comprises: an air flow channel (7001); a supporting partition (7002); and a first sealing portion (7003); a second sealing portion (7004); an air flow inlet and outlet (7005); and an instrument inlet (7006). At the distal end of the first puncture device (7), a support baffle (7002) plays a limiting role, and the surgical instrument (8) or the endoscope (9) is set at the center of the puncture cannula through the support baffle (7002); and A second puncture device (701), which is connected to the intracavitary gas self-circulation filtering device and punctures the human abdominal cavity (1003); The position of the air inlet of the first puncture device (7) can be adjusted and can be close to or away from the clamp head end of the active surgical instrument (8); The second puncture device (701) is a puncture cannula of the endoscope (9), which delivers the filtered gas back into the human abdominal cavity (1003); by placing the gas outlet of the second puncture device (701) close to the lens end of the endoscope (9) and relying on blowing, a clear surgical field area (1003A) is formed as an air curtain barrier area.

Images