A buffer tank, a buffer system and a pneumoperitoneum machine

Abstract

The application discloses a buffer tank, a buffer system and a pneumoperitoneum machine, wherein the buffer tank comprises a body, the body comprises a first buffer cavity, the first buffer cavity comprises a first thickness, a first length and a first width; a second buffer cavity comprises a second thickness, a second length and a second width, the second thickness is smaller than the first thickness, the second length is larger than the first length, and the second width is smaller than the first width; and a first channel is connected with the first buffer cavity and the second buffer cavity; the buffer system comprises a first buffer, a second buffer and the buffer tank, and the buffer tank comprises the first buffer cavity, the second buffer cavity and the first channel; the volume of the first buffer cavity is larger than the volume of the second buffer cavity. By arranging the buffer cavities with different sizes, structures and volumes on the body of the buffer tank, the air flow can be effectively buffered, air flow fluctuation can be avoided, and the overall air flow fluctuation of the pneumoperitoneum machine can be effectively inhibited by the buffer system with three-stage buffering.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically relating to a buffer tank, a buffer system, and an insufflator. Background Technology

[0002] An insufflator is an auxiliary device used in minimally invasive laparoscopic surgery. It is mainly used to inject carbon dioxide gas in conjunction with a trocar, which raises the abdominal cavity space and creates a sufficient field of vision for the surgeon to perform the operation.

[0003] A pneumoperitoneum machine typically includes components such as an inlet pressure reducing valve, a flow regulating valve, and a pressure sensor. It injects depressurized carbon dioxide into the abdominal cavity through a trocar, and the abdominal cavity pressure is detected by the pressure sensor in the equipment to control the amount and start / stop of the airflow injection.

[0004] During the operation of the pneumoperitoneum machine, various devices inside the machine can cause airflow fluctuations, which may cause equipment vibration. Furthermore, the airflow fluctuations, which do not pass through the gas buffer structure and directly circulate into the abdominal cavity, can cause severe impacts. The continuous fluctuations of the abdominal tissues can seriously affect the operator's surgical precision and pose a serious threat to the patient's life. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a buffer tank, a buffer system, and an insufflator. By incorporating buffer chambers of varying sizes, structures, and volumes within the buffer tank, airflow fluctuations are suppressed. Furthermore, the buffer system, with its three-stage buffer structure, effectively prevents overall airflow fluctuations in the insufflator, avoiding equipment vibration and abdominal tissue movement. This improves the operator's surgical precision and ensures patient safety.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A buffer tank includes a body, the body comprising:

[0008] The first buffer cavity includes a first thickness, a first length, and a first width;

[0009] The second buffer cavity includes a second thickness, a second length, and a second width, wherein the second thickness is less than the first thickness, the second length is greater than the first length, and the second width is less than the first width; and

[0010] The first channel connects the first buffer cavity and the second buffer cavity.

[0011] Furthermore, it also includes:

[0012] A third buffer cavity includes a third thickness, a third length, and a third width, wherein the third thickness is equal to the first thickness, the sum of the third length and the first length is less than the second length, and the third width is equal to the first width; and

[0013] The second channel connects the second buffer chamber and the third buffer chamber.

[0014] Furthermore, the first buffer cavity and the third buffer cavity are located on the same side of the second buffer cavity.

[0015] Furthermore, the ratio of the first thickness to the second thickness is 8:1-12:1, and the ratio of the first width to the second width is 2.5:1-4:1.

[0016] The present invention also provides a buffering system, comprising:

[0017] A first buffer includes a front cover, a buffer plate, and a rear cover; the front cover and the rear cover form a cavity, the buffer plate is disposed in the cavity and divides the cavity into an air inlet cavity and an air outlet cavity; the buffer plate includes a buffer hole, the buffer hole connecting the air inlet cavity and the air outlet cavity;

[0018] A second buffer, connected to the first buffer, includes a fourth buffer cavity, a fifth buffer cavity, and a sixth buffer cavity; the sixth buffer cavity is located on the same side of the fourth and fifth buffer cavities, and is connected to the same side of both the fourth and fifth buffer cavities; and

[0019] A buffer tank, connected to the second buffer, includes a first buffer cavity, a second buffer cavity, and a first channel; the first channel connects the first buffer cavity and the second buffer cavity, and the volume of the first buffer cavity is larger than the volume of the second buffer cavity.

[0020] Furthermore, the first buffer also includes:

[0021] A first filter is connected to the fourth buffer chamber and the air outlet chamber.

[0022] Furthermore, the second buffer also includes:

[0023] The second filter is located inside the sixth buffer chamber and is connected to the same side of the fourth buffer chamber.

[0024] Furthermore, the buffer tank also includes:

[0025] A third buffer chamber, the volume of which is equal to the volume of the second buffer chamber; and

[0026] The second channel connects the second buffer chamber and the third buffer chamber.

[0027] Furthermore, the ratio of the thickness of the first buffer cavity to the thickness of the second buffer cavity is 8:1-12:1, and the ratio of the width of the first buffer cavity to the width of the second buffer cavity is 2.5:1-4:1.

[0028] The present invention also provides an insufflator, including the above-described buffer system.

[0029] The beneficial effects achieved by this invention are very obvious. It can effectively suppress airflow fluctuations, ensure the airflow stability of the pneumoperitoneum machine, and avoid fluctuations in abdominal tissues. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the pneumoperitoneum machine of the present invention;

[0031] Figure 2 This is a schematic diagram of the first buffer.

[0032] Figure 3 for Figure 2 A cross-sectional schematic diagram;

[0033] Figure 4-5 This is a schematic diagram of the buffer plate structure;

[0034] Figure 6 This is a schematic diagram of the structure of the first buffer;

[0035] Figure 7 This is a schematic diagram of the second buffer.

[0036] Figure 8 A schematic diagram of the overall buffer tank.

[0037] Figure 9 Schematic diagram of the buffer tank

[0038] Figure 10 Schematic diagram of the buffer tank cavity

[0039] Figure 11 Schematic diagram of the buffer tank cavity

[0040] Figure 12 Schematic diagram of the buffer tank cavity

[0041] Figure 13 Schematic diagram of the buffer tank cavity

[0042] Figure 14 A diagram showing the airflow fluctuations of an unbuffered pneumoperitoneum machine.

[0043] Figure 15 Airflow fluctuation diagram for a single-level buffer pneumoperitoneum machine

[0044] Figure 16 Airflow fluctuation diagram for a separate secondary buffer pneumoperitoneum machine

[0045] Figure 17 Airflow fluctuation diagram for a standalone three-stage buffer pneumoperitoneum machine

[0046] Figure 18 Airflow fluctuation diagram for a three-stage buffer pneumoperitoneum machine Detailed Implementation

[0047] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms, etc., is based on the orientation or positional relationship shown in the drawings and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0049] The insufflator of this invention is an auxiliary device in laparoscopic surgery. The insufflator is equipped with a buffer system with three-level buffering function. The three-level buffering suppresses the overall airflow fluctuation inside the insufflator, effectively avoiding equipment vibration and abdominal tissue fluctuation, improving the operator's surgical accuracy and ensuring the patient's life safety.

[0050] In some embodiments, such as Figure 1 As shown, the pneumoperitoneum machine 0 of the present invention is equipped with a buffer system 01 and a compressor 02. It is foreseeable that the pneumoperitoneum machine 0 can also be equipped with other devices, such as a pressure reducing valve, a flow regulating valve, and a pressure sensor. Here, as an example, since the compressor 02 achieves gas suction and compression through the movement of a piston rod and the opening and closing of a diaphragm during operation, the gas suctioned from the abdominal cavity will experience gas fluctuations due to compression. This is the most important factor causing airflow fluctuations in the compressor. To avoid, and especially to avoid, the airflow fluctuations generated by the compressor, a buffer system 01 is used to suppress airflow fluctuations in the pneumoperitoneum machine. The buffer system 01 includes a first buffer 1, a second buffer 2, and a buffer tank 3. The first buffer 1 is a primary buffer, the second buffer 2 is a secondary buffer, and the buffer tank 3 is a tertiary buffer. The tertiary buffer system 01 can more effectively suppress the overall airflow fluctuations of the pneumoperitoneum machine, ensuring stable airflow into the abdominal cavity and preventing damage to the abdominal tissues.

[0051] In some embodiments, such as Figure 2-3As shown, the first buffer 1 includes a front cover 11, a rear cover 12 and a buffer plate 13; wherein the front cover 11 and the rear cover 12 form a cavity, and the buffer plate 13 is disposed in the cavity and divides the cavity into an air inlet cavity 15 and an air outlet cavity 16.

[0052] like Figure 3 As shown, the front cover 11 is cylindrical in shape and has an air inlet 111. This air inlet 111 can be a standard pagoda connector for connecting an air inlet pipe (not shown) to allow gas from the patient's abdominal cavity to enter the air inlet chamber 15. A positioning part 113 protrudes from the inner wall of the front cover 11. This positioning part 113 can be a continuous circumferential shape, a discontinuous circumferential shape, or a non-circular shape. A buffer plate 13 is disposed on the positioning part 113.

[0053] The first buffer 1 also includes a sealing ring 14, which is disposed on the side of the buffer plate 13 facing away from the positioning part 113, thereby sealing the space between the buffer plate 13 and the inner wall of the cavity.

[0054] The rear cover 12 of the first buffer 1 has an irregular shape, and its inner cavity basically forms an air outlet chamber 16. The air outlet chamber 16 consists of two parts: a cylindrical cavity and an arc-shaped cavity. The central axes of the cylindrical cavity and the arc-shaped cavity overlap, which makes the air outlet chamber 16 have a large capacity and has a buffering effect on the air pressure fluctuations flowing through the first buffer 1. The rear cover 12 is also provided with an air outlet 121, which can be a standard Luer connector for use with a filter.

[0055] The front cover 11 and rear cover 12 of the first buffer 1 are detachably assembled to form a cavity. The front cover 11 is provided with an internal thread 112, and the rear cover 12 is provided with an external thread 122. The internal thread 112 and the external thread 122 engage with each other to retract the front cover 11 and the rear cover 12, thereby achieving detachable assembly. As an example, the front cover 11 being provided with an external thread and the rear cover 12 being provided with an internal thread can also achieve detachable assembly; in addition, detachable assembly can also be achieved by other means such as bonding or interference fit.

[0056] After the front cover 11 and the rear cover 12 of the first buffer 1 are assembled by internal and external threads, the end of the rear cover 12 presses against the sealing ring 14, thereby achieving a better sealing effect.

[0057] like Figure 4-5As shown, the buffer plate 13 includes a first region 131 and a second region 132, and the buffer plate 13 can be substantially composed of the first region 131 and the second region 132. The first region 131 is provided with a condensate tank 1311, which is used to condense water vapor. The second region 132 has at least one buffer hole 1321, which penetrates the body of the buffer plate 13, connects the air inlet chamber 15 and the air outlet chamber 16, and is used to buffer the airflow. The first region 131 can be located in the central region of the body of the buffer plate 13. A plurality of buffer holes 1321 are radially and evenly distributed on the second region 132. Preferably, there are 36 buffer holes 1321, which are evenly arranged in three layers, with 6 holes in each layer. The buffer holes on the buffer plate can buffer the airflow and avoid airflow fluctuations. In addition, the entire first buffer 1 can also collect water vapor and effectively condense the gas and impurities discharged from the human abdominal cavity. The buffer holes can effectively buffer the airflow. After condensation, the condensate and impurities are temporarily placed in the filter storage tank. The condensate and impurities in the filter storage tank can be cleaned by disassembling the filter storage tank, so that it can be reused.

[0058] In some embodiments, such as Figure 1 , 6 As shown, the first buffer 1 also includes a first filter 17, which is connected to the air outlet chamber 16 and the second buffer 2. The first filter 17 is designed to filter particles larger than 0.2 micrometers, and the addition of the first filter 17 can also better buffer the airflow, so that the airflow can be filtered smoothly through the first filter 17.

[0059] In some embodiments, such as Figure 1 , 7 As shown, the second buffer 2 includes a fourth buffer chamber 21, a fifth buffer chamber 22, and a sixth buffer chamber 23. The fourth and fifth buffer chambers 21 and 22 can be arranged side-by-side, with the fourth buffer chamber 21 connected to the first filter 17 and the fifth buffer chamber 22 connected to the buffer tank. The sixth buffer chamber 23 is located on the same side of the fourth and fifth buffer chambers 21 and 22, and is connected to the sidewalls of the fourth and fifth buffer chambers 21 and 22 on the same side. In actual operation, the airflow direction is horizontally entering the fourth buffer chamber 21, then vertically entering the sixth buffer chamber 23, then vertically entering the fifth buffer chamber 22, and finally horizontally exiting from the fifth buffer chamber 22. The airflow undergoes a bend in its transport path within the fourth, fifth, and sixth buffer chambers 21 and 23, greatly suppressing airflow fluctuations.

[0060] In some embodiments, such as Figure 1 , 7As shown, the second buffer also includes a second filter 24, located within the sixth buffer chamber 23, capable of filtering impurities and moisture larger than 0.01 micrometers. The second filter 24 is located within the sixth buffer chamber 23 and connected to the fourth buffer chamber 21. The second filter 24, situated within the sixth buffer chamber 23, further buffers the airflow entering from the fourth buffer chamber 21. Since the airflow entering the fourth buffer chamber 21 is relatively rapid, the addition of the second filter 24, in addition to filtering impurities and moisture, further buffers the airflow entering the sixth buffer chamber 23 before it enters the sixth buffer chamber 23, thus more effectively suppressing airflow fluctuations. In other embodiments, an additional filter can be added within the sixth buffer chamber 23 and connected to the fifth buffer chamber 22, further filtering and buffering the airflow entering the fifth buffer chamber 22 from the sixth buffer chamber 23.

[0061] In some embodiments, such as Figure 1 , 8 As shown, the buffer tank 3 includes a body 31, which can be integrally formed or separately formed. Separately formed, it can be assembled from a base and a plate using bolts, screws, adhesive, or other methods. The following explanation uses the assembly of the base and plate as an example. Figure 9 As shown, the base has a buffer cavity.

[0062] In some embodiments, such as Figure 9 , 10 As shown, the main body 31 has a first buffer cavity 311, a second buffer cavity 312, a third buffer cavity 314, a first channel 313, and a second channel 315. The first channel 313 connects the first buffer cavity 311 and the second buffer cavity 312, and the second channel 315 connects the second buffer cavity 312 and the third buffer cavity 314. The volume of the first buffer cavity 311 is larger than that of the second buffer cavity 312. By using buffer cavities of different sizes, the flow rate of the airflow can be alternated, thus better suppressing fluctuations. In some embodiments, the volume of the second buffer cavity 312 is equal to the volume of the third buffer cavity 314. By using two buffer cavities with the same volume but different structural dimensions, airflow fluctuations can be better suppressed.

[0063] In other embodiments, only the first buffer chamber 311, the second buffer chamber 312, and the first channel 313 may be provided, which can also serve the purpose of buffering the airflow; alternatively, multiple sets of the first buffer chamber 311, the second buffer chamber 312, and the first channel 313 may be provided to more effectively buffer the airflow and avoid fluctuations; furthermore, depending on the specific parameters of the compressor, multiple sets of the first buffer chamber 311, the second buffer chamber 312, and the first channel 313, or multiple sets of the first buffer chamber 311, the second buffer chamber 312, the third buffer chamber 314, the first channel 313, and the second channel 315 may be provided, such as... Figure 10The surface shown has a set of first buffer chamber 311, second buffer chamber 312 and first channel 313, as well as a set of first buffer chamber 311, second buffer chamber 312, third buffer chamber 314, first channel 313 and second channel 315.

[0064] In some embodiments, such as Figure 11 , 12 As shown in Figure 13, the first buffer cavity 311 has a first thickness 3111, a first length 3112, and a first width 3113; the second buffer cavity 312 has a second thickness 3121, a second length 3122, and a second width 3123; and the third buffer cavity 314 has a third thickness 3141, a third length 3142, and a third width 3143. The volume of the first buffer cavity 311 is larger than the volume of the second buffer cavity 312, and the volume of the second buffer cavity 312 is equal to the volume of the third buffer cavity 314.

[0065] In some embodiments, the second thickness 3121 is less than the first thickness 3111, the second length 3122 is greater than the first length 3112, the second width 3123 is less than the first width 3113, the third thickness 3141 is equal to the first thickness 3121, the sum of the third length 3142 and the first length 3112 is less than the second length 3122, and the third width 3143 is equal to the first width 3113. By setting different cavity sizes, the buffering effect is increased. In particular, the second thickness 3121 is not the same as the first thickness 3111, which can buffer the airflow in the thickness direction, achieving the blocking and buffering of the flowing airflow through the cavity walls, resulting in a superior effect. Furthermore, the size matching of the first buffer cavity 311, the second buffer cavity 312, and the third buffer cavity 314 can achieve a compact and effective buffering structure. In other embodiments, the first buffer cavity 311 and the second buffer cavity 312 are elongated rectangular cavities, which can both lengthen the airflow path and effectively buffer the airflow through the cavity walls.

[0066] In some embodiments, the first buffer chamber 311 and the third buffer chamber 314 are located on the same side of the second buffer chamber 312, making the structure more compact and allowing the airflow to turn through a loop, thus achieving a better buffering effect.

[0067] In some embodiments, preferably, the ratio of the first thickness 3111 to the second thickness 3121 is 8:1-12:1, more preferably 10:1; the ratio of the first width 3113 to the second width 3122 is 2.5:1-4:1, more preferably 3:1. By setting the ratio of the first thickness 3111 to the second thickness 3121 to 10:1 and the ratio of the first width 3113 to the second width 3122 to 3:1, cavities of different sizes with different thicknesses and widths and larger thickness deviations are formed, which more effectively suppresses airflow fluctuations in the pneumoperitoneum machine compared to cavities of different sizes with uniform thickness and width.

[0068] This invention, through a specially structured buffer tank and a three-stage buffering system, minimizes airflow fluctuations in the insufflator. Figure 14-18 As shown in the diagram, the airflow fluctuations under the buffer system, single primary buffer, single secondary buffer, single tertiary buffer, and tertiary buffer are all different. It can be seen that the airflow fluctuations of the pneumoperitoneum machine are the most stable and effective after the tertiary buffer system of this application is set. Other methods cannot achieve the same airflow fluctuation stability as this application.

[0069] While certain embodiments and generally related methods have been described, modifications and variations of these embodiments will be apparent to those skilled in the art. Therefore, the above description of exemplary embodiments does not limit or restrict the invention. Other changes, substitutions, and alterations are possible without departing from the spirit of the appended claims.

Claims

1. A buffer tank, comprising a body, characterized in that, The body includes: The first buffer cavity includes a first thickness, a first length, and a first width; The second buffer cavity includes a second thickness, a second length, and a second width, wherein the second thickness is less than the first thickness, the second length is greater than the first length, and the second width is less than the first width. The first channel connects the first buffer cavity and the second buffer cavity; A third buffer cavity includes a third thickness, a third length, and a third width, wherein the third thickness is equal to the first thickness, the sum of the third length and the first length is less than the second length, and the third width is equal to the first width; and The second channel connects the second buffer chamber and the third buffer chamber.

2. A buffer tank according to claim 1, characterized in that: The first buffer cavity and the third buffer cavity are located on the same side of the second buffer cavity.

3. A buffer tank according to any one of claims 1-2, characterized in that: The ratio of the first thickness to the second thickness is 8:1-12:1, and the ratio of the first width to the second width is 2.5:1-4:

1.

4. A buffer system, characterized in that, include: The first buffer includes a front cover, a buffer plate, and a rear cover; the front cover and the rear cover form a cavity, the buffer plate is disposed in the cavity and divides the cavity into an air inlet cavity and an air outlet cavity; the buffer plate includes a first region and a second region, the first region is provided with a condensate tank, and the second region is provided with buffer holes, the buffer holes are radially and evenly distributed on the second region, and the buffer holes connect the air inlet cavity and the air outlet cavity; The air outlet chamber is composed of two parts: a cylindrical cavity and an arc-shaped cavity, and the central axes of the cylindrical cavity and the arc-shaped cavity overlap. The second buffer, connected to the first buffer, includes a fourth buffer chamber, a fifth buffer chamber, and a sixth buffer chamber; The sixth buffer cavity is located on the same side of the fourth buffer cavity and the fifth buffer cavity, and the sixth buffer cavity is connected to the same side of the fourth buffer cavity and the fifth buffer cavity respectively; as well as A buffer tank, connected to the second buffer, includes a first buffer chamber, a second buffer chamber, a third buffer chamber, a first channel, and a second channel; The first channel connects the first buffer cavity and the second buffer cavity, and the volume of the first buffer cavity is greater than the volume of the second buffer cavity; the second channel connects the second buffer cavity and the third buffer cavity, and the volume of the third buffer cavity is equal to the volume of the second buffer cavity.

5. A buffer system according to claim 4, characterized in that, The first buffer also includes: A first filter is connected to the fourth buffer chamber and the air outlet chamber.

6. A buffer system according to claim 5, characterized in that, The second buffer also includes: The second filter is located inside the sixth buffer chamber and is connected to the same side of the fourth buffer chamber.

7. A buffer system according to claim 5, characterized in that: The ratio of the thickness of the first buffer cavity to the thickness of the second buffer cavity is 8:1-12:1, and the ratio of the width of the first buffer cavity to the width of the second buffer cavity is 2.5:1-4:

1.

8. A pneumoperitoneum machine, characterized in that, Includes the buffer system described in any one of claims 4-7.

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