Flexible bag for containing irrigation fluid used by intraoperative irrigation equipment and irrigation fluid heating assembly

Abstract

The utility model discloses a flexible bag used for containing flushing fluid used by flushing equipment in an operation and a flushing fluid heating assembly comprising the flexible bag, the flexible bag comprises a bag body, the bag body is provided with a fluid side wall for limiting a fluid flow channel, and the fluid side wall is constructed to limit the M-shaped fluid flow channel which reciprocates for multiple times; the liquid inlet connector and the liquid outlet connector are used for being connected with a medical flow guide hose in a sleeved mode, fixed to the same side of the bag body and communicated with the two ends of the liquid flow channel. Therefore, liquid can flow from the liquid inlet connector to the liquid outlet connector only when flowing through the whole liquid flow channel. According to the utility model, medical personnel can be helped to accurately and efficiently heat the flushing fluid to be used to a proper temperature in an operating room, so that the discomfort of a patient caused by overcooling or overheating of the flushing fluid is avoided.

Description

Technical Field

[0001] This disclosure relates to medical devices, and more particularly to an intraoperative irrigation device or consumable, and specifically to a flexible bag for containing irrigation fluid used in an intraoperative irrigation device and an irrigation fluid heating assembly including the bag, which can be used, for example, in arthroscopy and other surgeries to rinse solid particles and fluids generated during surgery. Background Technology

[0002] In many types of surgical procedures, ensuring that the surgeon can clearly observe the surgical site or cavity and the corresponding tissues is crucial. A clear view allows for precise and efficient surgical manipulation. In procedures such as arthroscopic surgery, additional fluid or solid particles are often generated at or near the surgical site. Therefore, intraoperative irrigation is typically used to provide the surgeon with a clear surgical field.

[0003] With the widespread use of surgical irrigation equipment, the shortcomings of some existing equipment are becoming increasingly apparent. For example, existing surgical irrigation equipment has a simple pressurization function to achieve a certain flow rate or pressure of irrigation fluid to remove liquid or solid particles generated during surgery. However, the temperature of the irrigation fluid used depends on the ambient temperature. Since the ambient temperature is often low, this lack of temperature regulation in existing intraoperative irrigation equipment often causes discomfort to patients in practical applications, and may even cause severe discomfort in some low-temperature environments.

[0004] To address these shortcomings, some existing solutions attempt to overcome the deficiencies of surgical irrigation equipment. One approach is to store the surgical irrigation fluid in a constant-temperature environment, such as a greenhouse, and heat it before transferring it to the operating room when needed. Another approach is to use a device such as a hot air blower to rapidly heat the container of the irrigation fluid in order to heat the irrigation fluid ready for use.

[0005] However, these solutions suffer from practical inconvenience in the complex and potentially cold operating room environment. Furthermore, they rely heavily on the experience and skill of surgical assistants, increasing labor costs and often failing to maintain the optimal or appropriate irrigation fluid temperature for patient comfort during procedures. Moreover, the increased heating power for rapid heating can sometimes lead to excessively high (overheated) temperatures, causing patient discomfort. In other words, existing solutions do not achieve satisfactory accuracy in controlling the temperature of the irrigation fluid.

[0006] Therefore, there is an urgent need to provide a new flexible bag for containing irrigation fluid used in intraoperative irrigation equipment and an irrigation fluid heating assembly including the bag, in order to at least partially alleviate or solve the aforementioned problems and defects of existing solutions. Utility Model Content

[0007] One object of this disclosure is to provide a flexible bag for containing irrigation fluid used in intraoperative irrigation equipment and / or related consumables, and an irrigation fluid heating assembly including the bag, in order to overcome the aforementioned deficiencies of existing intraoperative irrigation equipment and / or related consumables.

[0008] This disclosure provides a flexible bag for containing irrigation fluid used in intraoperative irrigation equipment, characterized in that the flexible bag comprises:

[0009] A bag body having a fluid sidewall defining a liquid flow channel, the fluid sidewall being configured to define a liquid flow channel in a reciprocating M-shape.

[0010] A liquid inlet connector and a liquid outlet connector are used to connect a medical drainage tube. The liquid inlet connector and the liquid outlet connector are fixed on the same side of the bag body and connect the two ends of the liquid flow channel, so that the liquid can flow through the entire liquid flow channel from the liquid inlet connector to the liquid outlet connector.

[0011] According to some embodiments of this disclosure, the bag body is made of a flexible material, and both the liquid inlet connector and the liquid outlet connector have a cylindrical shape and are made of a rigid material different from that of the bag body.

[0012] According to some embodiments of this disclosure, the fluid sidewall has greater structural strength than other parts of the bag body, and is therefore less prone to bending.

[0013] For example, optionally, the fluid sidewalls may have a certain thickness or rely on a strong connection between the fluid sidewalls and the upper and lower surfaces of the bag to provide structural strength beyond that of other parts. Thus, the desired shape of the liquid flow channel can be substantially maintained even when filled with flowing liquid.

[0014] According to some embodiments of this disclosure, the liquid channels have substantially the same maximum cross-section.

[0015] According to some embodiments of this disclosure, the liquid flow channel reciprocates multiple times between opposite ends of the bag body to form an M-shaped shape, the M-shaped shape comprising two or more U-shaped reciprocating segments, each reciprocating segment having the same shape and being connected end to end.

[0016] According to some embodiments of this disclosure, each U-shaped reciprocating segment has two main body sections that are parallel to each other and a bent portion that connects the two main body sections.

[0017] According to some embodiments of this disclosure, the bag body is rectangular in shape with a long side and a short side when not filled with liquid, the liquid inlet connector and the liquid outlet connector are fixed at two far apart ends on a short side, and the main body of each reciprocating section of the liquid flow channel extends along the direction of the long side.

[0018] According to some embodiments of this disclosure, the flexible bag has a flat shape, and the maximum thickness of the flexible bag when filled with liquid is in the range of 3 mm to 10 mm, and the length and width dimensions perpendicular to the thickness direction are not less than 5 times the maximum thickness.

[0019] This disclosure also provides an irrigation fluid heating assembly for an intraoperative irrigation device, the irrigation fluid heating assembly comprising a flexible bag for containing irrigation fluid as described in any of the above embodiments and an irrigation fluid heating device, wherein the irrigation fluid heating device comprises:

[0020] Two heat-conducting plates are detachably assembled together. The two heat-conducting plates form a flat plate-shaped recess in the middle main body portion of their adjacent inner surfaces, thereby forming a hollow space together. The hollow space is suitable for accommodating the flexible bag and allows surface contact between the flexible bag, which is filled with rinsing liquid, and the inner surfaces of the two heat-conducting plates.

[0021] A heating element is attached to the outer surface of the heat-conducting plate;

[0022] A temperature sensor is fixedly installed in the flat recess of one of the heat-conducting plates.

[0023] According to some embodiments of this disclosure, the heat-conducting plate has a rectangular shape and a gate-shaped reinforcing frame along the periphery of the rectangular shape, the gate-shaped reinforcing frame protruding relative to the central main body portion of the heat-conducting plate on both the inner and outer sides;

[0024] The rinsing fluid heating device further includes a port connector, which is rectangular in shape and has a narrow, elongated opening. The four corners of the port connector are connected to or joined to the ends of the U-shaped reinforcing frames of the two heat-conducting plates, thereby connecting the narrow, elongated opening to the hollow space. The narrow, elongated opening contains two circular orifices, the maximum width of which is greater than the width of the narrow, elongated opening excluding the circular orifices. These orifices are configured to securely fasten the liquid inlet and liquid outlet connectors of the flexible bag.

[0025] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present disclosure.

[0026] The positive and progressive effects of this disclosure are as follows:

[0027] The flexible bag for containing irrigation fluid used in intraoperative irrigation equipment, as disclosed herein, and the irrigation fluid heating component therein, can help relevant operators to heat the irrigation fluid to be used in the operating room to an appropriate temperature in a more accurate manner to avoid discomfort to patients caused by the irrigation fluid being too cold or too hot. It also takes into account the heating speed and efficiency to a certain extent and saves labor costs (attention of surgical personnel). Attached Figure Description

[0028] Figure 1 A perspective view of a flushing fluid heating device for use with a flexible bag, included in a flushing fluid heating assembly according to a preferred embodiment of the present disclosure, is shown schematically.

[0029] Figure 2 schematically shown Figure 1 A top view of the flushing fluid heating device in the flushing fluid heating assembly (viewed from above the second side border).

[0030] Figure 3 schematically shown Figure 1 An exploded view of the flushing fluid heating device in the flushing fluid heating assembly, visible in the image, with its viewing angle and... Figure 1 Basically the same.

[0031] Figure 4 schematically shown Figure 3 A partially enlarged schematic diagram of the recesses of the two heat-conducting plates in the flushing fluid heating device and the torque sensor suitable for assembly into the recesses, showing its viewing angle and... Figure 3 Consistent.

[0032] Figure 5 schematically shown Figure 1 A three-dimensional view of a heat-conducting plate in the flushing fluid heating device of the flushing fluid heating assembly, as seen in the image.

[0033] Figure 6 schematically shown Figure 1 An example of a port connection in an irrigation fluid heating device for intraoperative irrigation equipment, visible in the irrigation fluid heating assembly.

[0034] Figure 7A A perspective view of a flexible bag for containing rinsing fluid according to a preferred embodiment of the present disclosure is shown schematically.

[0035] Figure 7B A schematic front view of a flexible bag for containing rinsing fluid according to a preferred embodiment of the present disclosure is shown, with the viewing angle facing the main surface of the flexible bag.

[0036] Figure 8 A top perspective view of an intraoperative irrigation apparatus including an irrigation fluid heating assembly according to a preferred embodiment of the present disclosure is shown schematically.

[0037] Figure 9 schematically shown Figure 8 A three-dimensional diagram of the intraoperative irrigation equipment is shown.

[0038] Figure 10 schematically shown Figure 8 The image shows a front view of the intraoperative irrigation equipment.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1: Heat conduction plate

[0041] 11: Door-shaped reinforced border

[0042] 12: The inner surface of the heat-conducting plate (forming a hollow space)

[0043] 13: The main body of the middle section

[0044] 14: Gap

[0045] 15: First side border

[0046] 16: Second side border

[0047] 17: Depression

[0048] 18: Temperature sensor placement location

[0049] 2: Heating element

[0050] 3: Surface heat dissipation structure

[0051] 4: Port connectors

[0052] 41: Narrow opening

[0053] 42: Irregularly shaped opening

[0054] 5: Torque sensor

[0055] 51: Strain gauge housing cavity

[0056] 52: Deformed wall section

[0057] 53: First Loading End

[0058] 54: Second Loading End

[0059] 9: Flexible bags

[0060] 91: Flow channel

[0061] 92: Liquid inlet connector

[0062] 93: Liquid outlet connector

[0063] 94: Main Body

[0064] 95: Bending section

[0065] 96: Fluid sidewall

[0066] 100: Rinse fluid heating device

[0067] 200: Insulated Room

[0068] 210: Insulated room partition

[0069] 220: Cooling fan

[0070] 300: Peristaltic pump

[0071] 310: Stepper driver

[0072] 400: PLC module

[0073] 500: Temperature controller

[0074] 510: Pressure Conversion Module

[0075] 600: Power supply device

[0076] 610: Solid State Relay

[0077] 700: Chassis

[0078] 710: Chassis ventilation openings

[0079] 800: Touchscreen

[0080] 900: Inlet pipe clamp

[0081] 910: Outlet pipe clamp Detailed Implementation

[0082] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The following description is exemplary and not intended to limit the present invention. Any other similar situations also fall within the protection scope of the present invention.

[0083] In the following detailed description, directional terms such as "left," "right," "up," "down," "front," and "back" are used with reference to the directions described in the accompanying drawings. Components of embodiments of this invention can be positioned in a variety of different orientations; the directional terms are for illustrative purposes and not restrictive.

[0084] From the foregoing description and the following more detailed exemplary description of the detection box according to a preferred embodiment of the present disclosure, those skilled in the art will understand that the flexible bag and the irrigation fluid heating assembly including the flexible bag provided in this disclosure are well-suited for different operating room environments, especially under different ambient temperature conditions, accurately heating the irrigation fluid to be used in the operating room to an appropriate temperature to avoid discomfort to the patient caused by the irrigation fluid being too cold or too hot, while taking into account heating speed and efficiency and not relying on personnel experience.

[0085] Figure 1-6 The flushing fluid heating device 100, which is used in conjunction with the flexible bag 9, is schematically shown from different angles and aspects in a preferred embodiment of the flushing fluid heating assembly according to the present disclosure. Figures 7A-7B A flexible bag 9 for containing rinsing fluid according to a preferred embodiment of the present disclosure is illustrated schematically. Figure 8-10 The present invention further illustrates an example of an intraoperative irrigation device including the aforementioned irrigation fluid heating assembly, in order to facilitate a clearer understanding of how to apply the technical solutions described in this disclosure and the superior technical effects that can be achieved.

[0086] First refer to Figure 1-4 As shown, the rinsing fluid heating device 100 used in conjunction with the flexible bag 9 according to the following preferred embodiment of the present disclosure includes:

[0087] Two heat-conducting plates 1 are detachably assembled together. At least one of the heat-conducting plates 1 has a flat plate-shaped recess in the middle main body portion 13 of the inner side surface of the two adjacent plates, thereby forming a hollow space between the two heat-conducting plates 1 consisting of one or two of the flat plate-shaped recesses. The hollow space is adapted to receive a flexible bag 9 for containing rinsing fluid, and to make surface contact between the flexible bag 9 and the inner side surface 12 of the two heat-conducting plates 1. The flexible bag 9 has a fluid inlet and outlet for rinsing fluid to flow in and out.

[0088] Heating element 2 is attached to the outer surface of the heat-conducting plate 1.

[0089] In other words, although the hollow space formed by the flat recess in the assembled state of the two heat-conducting plates 1 is not directly shown in the figure because it is inside the flushing liquid heating device 100, its outer contour can be seen by referring to these figures, especially the accompanying drawings. Figure 3-4 It is understood that the flushing fluid heating device 100 in the embodiment utilizes two heat-conducting plates 1 to form a hollow space in the shape of a thin plate to accommodate a flexible liquid bag.

[0090] Next, refer to Figures 7A-7B As shown, the flexible bag 9 for containing irrigation fluid used in an intraoperative irrigation device, according to a preferred embodiment of the present disclosure, comprises:

[0091] The bag body has a fluid sidewall 96 defining a liquid flow channel 91, the fluid sidewall 96 being configured to define a liquid flow channel 91 in a reciprocating M-shape.

[0092] The liquid inlet connector 92 and the liquid outlet connector 93 are used to connect the medical drainage tube. The liquid inlet connector 92 and the liquid outlet connector 93 are fixed on the same side of the bag body and connect the two ends of the liquid flow channel 91, so that the liquid can flow through the entire liquid flow channel 91 to flow from the liquid inlet connector 92 to the liquid outlet connector 93.

[0093] According to some preferred embodiments of this disclosure, the bag body is made of a flexible material, and the liquid inlet connector 92 and the liquid outlet connector 93 are both cylindrical in shape and made of a rigid material different from the bag body.

[0094] Reference Figure 1-4 as well as Figures 7A-7B It is understandable that the rinsing fluid flowing in and out of the flexible bag 9 to achieve rinsing will cause the flexible bag 9 to bulge slightly. Therefore, as long as there is a certain flow rate, the surface of the flexible bag 9 in the hollow space will maintain a relatively stable surface contact with the inner surface 12 of the heat-conducting plate 1, and the rinsing fluid in the flexible bag 9 will be heated by the surface contact between the heat-conducting plate 1 and the surface of the flexible bag 9.

[0095] The thickness of this thin-plate-shaped hollow space can be much smaller than, or significantly smaller than, the dimensions in the other two directions. Simultaneously, it contacts two heat-conducting plates 1 on both sides of its thickness direction. This means that the contact area for heat conduction in this heating method can be quite large relative to the volume of the hollow space and the flexible liquid bag it contains. This allows heat conduction to very efficiently affect the rinsing fluid in the flexible bag 9, causing a temperature change. Therefore, as a low-cost (potentially disposable) consumable, the flexible bag 9 contains flowing rinsing fluid that can be heated to the target or desired temperature by the heat-conducting plates 1 in a relatively short time at a relatively low temperature (i.e., a small temperature difference from the initial temperature of the rinsing fluid), with virtually no risk of accidentally overheating the rinsing fluid.

[0096] According to some preferred embodiments of this disclosure, the fluid sidewall 96 has greater structural strength than other parts of the bag body, making it less prone to bending. For example, optionally, the fluid sidewall 96 may have a certain thickness or this structural strength exceeding that of other parts may be provided by a strong connection between the fluid sidewall 96 and the upper and lower surfaces of the bag body. Thus, the desired shape of the liquid flow channel 91 can be substantially maintained when filled with flowing liquid, thereby ensuring that the flow of the flushing fluid throughout the liquid flow channel 91, driven by a mechanism (e.g., a peristaltic pump described below), conforms to the desired use of medical flushing fluid, such as good flow rate controllability and consistency, thereby enabling the outflowing flushing fluid to be maintained at a desired temperature during flow.

[0097] Preferably, the liquid flow channels 91 have substantially the same maximum cross-section.

[0098] Still referencing Figures 7A-7B According to some preferred embodiments of this disclosure, the liquid flow channel 91 reciprocates multiple times between opposite ends of the bag body to form an M-shaped form, the M-shaped form comprising two or more U-shaped reciprocating segments, each reciprocating segment having the same shape and being connected end to end. More preferably, each U-shaped reciprocating segment has two parallel main body portions 94 and a bent portion 95 connecting the two main body portions 94.

[0099] This preference involves making the bends in the entire flow channel 91 relatively less resistant to the liquid flow, and the liquid flow itself is less delayed by the reciprocating flow channel 91 design. It also aims to minimize or limit backflow, turbulence, or any inconsistent liquid flow characteristics under different expected flushing fluid velocities and liquid pressures, and reduce the formation of low-flow bottlenecks, so that the flow velocity and fluid pressure / pressure at different locations can still remain approximately the same.

[0100] Still referencing Figures 7A-7BAccording to some more specific preferred embodiments of this disclosure, the bag body, when not filled with liquid, has a rectangular shape with a long side and a short side. The liquid inlet connector 92 and the liquid outlet connector 93 are fixed at opposite ends on one short side. The main body 94 of each reciprocating section of the liquid flow channel 91 extends along the direction of the long side. This allows for a relatively long flow channel 91 length to facilitate liquid heating with a surface-contact heating plate, thereby improving both heating efficiency and heating speed. This will be described in more detail below in conjunction with other parts or components of the heating assembly used with the flexible bag 9. Simultaneously, this preferred design also considers the heating effect of the rinsing fluid while ensuring relatively low resistance in the flow channel 91, thus facilitating more accurate control of the rinsing fluid flow rate / volume under, for example, peristaltic pump drive.

[0101] According to some preferred embodiments of this disclosure, the flexible bag 9 has a flat shape, and the maximum thickness of the flexible bag 9 when filled with liquid is in the range of 3 mm to 10 mm, and the length and width dimensions perpendicular to the thickness direction are not less than 5 times the maximum thickness. (Note: It is recommended to supplement the relevant parameters of these dimensions, including the bag thickness of the flexible bag 9 when filled with liquid (i.e., under the relatively maximum hydraulic level in the flushing fluid application), and supplement the combination of the dimensions of the product's flow channel 91 / connector diameter / length and width of the flexible bag 9. After supplementation, the dependent claims will be slightly adjusted.)

[0102] The technical solution described in this disclosure provides an environment similar to a small or micro-sized constant temperature room, and its flat or thin plate-like shape ensures that the temperature of the irrigation fluid required for surgery is maintained close to the desired temperature, thus providing optimal comfort to the patient. At the same time, it has better energy efficiency and cost-effectiveness because it does not require large-scale temperature control or high-power heating (e.g., by hot air).

[0103] The following will be further referenced Figure 1-6 A preferred design of a flushing fluid heating assembly and a flushing fluid heating device included therein, according to a preferred embodiment of the present disclosure, will be described.

[0104] refer to Figure 1-4 As shown, the rinsing fluid heating device 100 may further include:

[0105] A temperature sensor is fixedly installed in the flat recess of one of the heat-conducting plates 1;

[0106] The surface heat dissipation structure 3 has multiple heat dissipation fins, which are disposed on the outside of the heating element 2 and installed on the outside of the heat conduction plate 1 via a connector.

[0107] The two heat-conducting plates 1 may optionally have the same shape or substantially the same shape, and their two flat recesses together constitute the hollow space.

[0108] As shown in the attached figures, preferably, the heat-conducting plate 1 has a rectangular shape and a gate-shaped reinforcing frame 11 along the periphery of the rectangular shape, the gate-shaped reinforcing frame 11 protruding relative to the middle main body portion 13 of the heat-conducting plate 1 on both the inner and outer sides.

[0109] The thickness of the main part of the heat-conducting plate 1, namely the middle main body 13, can be very thin (to match the size of the flexible bag 9), for example, preferably 2mm-5mm thick. Therefore, the outer periphery of the heat-conducting plate 1 needs to be raised to a certain height on both the inner and outer sides to provide the necessary structural strength to avoid deformation. At the same time, the raised peripheral frame can also provide assembly positions for assembly or assembly, such as connection holes, fastener holes, etc.

[0110] Reference Appendix Figure 1-4 And especially refer to the appendix Figure 1 and 6 As shown, the rinsing fluid heating device 100 may also preferably include:

[0111] The port connector 4 is rectangular and has a narrow opening 41. The four corners of the port connector 4 are connected to or joined to the ends of the frame of the gate-shaped reinforcing frame 11 of the two heat-conducting plates 1, so that the narrow opening 41 is connected to the hollow space.

[0112] More preferably, the elongated opening 41 is provided with two irregularly shaped openings 42, the maximum width of the irregularly shaped openings 42 being greater than the width of the elongated opening 41 excluding the irregularly shaped openings 42, and configured to receive the liquid inlet connector 92 and the liquid outlet connector 93 of the flexible bag 9 that form the fluid inlet and outlet.

[0113] Therefore, the two irregularly shaped openings 42 can fix or limit the flexible bag 9 by fixing or limiting the two fluid connectors, thereby improving reliability.

[0114] The flushing fluid heating assembly according to some preferred embodiments of this disclosure includes a flushing fluid heating device 100 that further includes a pressure sensor configured to sense changes in fluid pressure received in the flexible bag 9 within the hollow space.

[0115] More preferably, especially refer to Figure 4 and combined Figure 3As shown, the two heat-conducting plates are assembled such that the two heat-conducting plates are completely fixed to each other at the first side frame of the gate-shaped reinforcing frame, while the two heat-conducting plates are connected to each other via torque sensor 5 at the second side frame of the gate-shaped reinforcing frame opposite to the first side frame, so that they have relative motion degrees of freedom in the direction perpendicular to the heat-conducting plates.

[0116] The torque sensor 5 includes a main body made of a deformable flexible material. A strain gauge receiving cavity 51 with strain gauges arranged in the middle of the main body is formed, thereby creating deformable wall portions 52 on both lateral sides of the strain gauge receiving cavity 51, each close to a heat-conducting plate. The main body is connected to one of the two heat-conducting plates via a first loading end 53 and a second loading end 54, respectively. The first loading end 53 and the second loading end 54 are arranged diagonally relative to the strain gauge receiving cavity 51. The torque sensor 5 is configured to measure the torque applied via the first loading end 53 and the second loading end 54 through the strain gauges and indirectly measure the change in fluid pressure received in the flexible bag 9 within the hollow space based on the torque. Preferably, the strain gauge receiving cavity 51 is a hollow through-hole with a shape as shown in the figure. Figure 4 The double circles shown in the diagram facilitate the placement of strain gauges within them.

[0117] Understandably, in Figure 4 In this preferred partial design shown, the two heat-conducting plates 1 are assembled such that only at the second side frame 16 opposite to the first side frame 15, the two heat-conducting plates 1 have relative degrees of freedom of movement in a direction perpendicular to the heat-conducting plates 1, that is, in Figure 3 The two heat-conducting plates 1 on the lower side are fixedly connected, while the upper side has a degree of freedom to make small opening and closing movements. This degree of freedom can actually be achieved simply by connecting the two heat-conducting plates with a certain degree of flexibility, such as by fasteners like screws, using the aforementioned torque sensor 5. When the pressure of the rinsing fluid received in the flexible bag 9 in the hollow space increases, the expanding flexible bag 9 will tend to separate the two heat-conducting plates. Since the two heat-conducting plates can only make such small opening and closing movements, the flexible bag 9 will cause the heat-conducting plates to separate slightly on the upper side by transmitting pressure through direct surface contact with the heat-conducting plates. At this time, the first loading end 53 and the second loading end 54 will apply (shear) torque to the main body of the torque sensor 5. The thinner wall portions (deformable wall portions 52, also called deformable columns) on both sides of the strain gauge receiving cavity 51 will deform accordingly and be quantitatively detected by means of the strain gauge response.

[0118] The strain gauge used here works on a principle somewhat similar to that of strain gauges used in weighing sensors. Specifically, it converts the deformation caused by stress or pressure changes into a change in the resistance of a Wheatstone bridge, and further into a change in the voltage drop across the resistor. This allows for an accurate, indirect calculation of the force exerted on the torque sensor 5. Furthermore, since the expanding flexible bag 9, as described earlier, tends to separate the two heat-conducting plates, maintaining a relatively close surface contact between the flexible bag 9 and the heat-conducting plates to transmit force, the liquid pressure or change in liquid pressure within the flexible bag 9 can be calculated based on the magnitude of the force exerted on the torque sensor 5 and the area of ​​the flat recess of the heat-conducting plate and the main surface of the flexible bag 9 in contact with it.

[0119] Therefore, this more preferred embodiment of the present disclosure (with) Figure 4 The partial design shown can measure the pressure exerted by the middle bag on the two heat-conducting plates using the torque sensor 5, and thus indirectly monitor the pressure and pressure changes of the flushing fluid in the flexible bag 9. A major advantage of this indirect detection method is that the actual fluid pressure detection device or sensor is arranged and used in a way that is completely unrelated to the flushing fluid flexible bag 9 consumable. Not only can the detection accuracy and real-time performance well meet the application scenarios of medical flushing fluid, but it also does not need to be removed from the disposable consumable, and will not bring significant cost increases due to the use of disposable consumables. Therefore, this implementation method has a significant cost advantage compared to other solutions with medical flushing fluid pressure monitoring functions in the prior art. This may be reflected in the ease of use and the significant reduction in labor or assembly and disassembly operations, and may also be reflected in the significant reduction in consumable costs.

[0120] Based on some preferred embodiments of this disclosure, particularly referring to Figure 5 As shown, the heating element 2 is an electric heating element 2, and the gate-shaped reinforcing frame 11 has notches 14 formed at the same positions on the inner and outer sides. The inner notch 14 is for the wiring of the temperature sensor (preferably located at the temperature sensor mounting position 18 shown in the figure), and the outer notch 14 is for the wiring of the electric heating element 2.

[0121] According to some preferred embodiments of this disclosure, the heating element 2 is a thermoelectric cooling chip based on the Peltier effect, and the heat-conducting plate 1 is made of aluminum or aluminum alloy.

[0122] According to some preferred embodiments of this disclosure, the thermoelectric cooling element is centrally attached to the outer surface of the heat-conducting plate 1, and the total area of ​​the thermoelectric cooling element is not less than 0.2 times the area of ​​the flat plate recess.

[0123] According to some preferred embodiments of this disclosure, the dimensions of the middle main body portion 13 of the heat-conducting plate 1 can be designed as follows and adapted to the dimensions of the flexible bag 9, namely, the thickness of the middle main body portion 13 is in the range of 2 mm to 6 mm, the thickness of the hollow space formed by one or two of the flat plate-shaped recesses is in the range of 3 mm to 10 mm, and the length and width of the hollow space in the direction perpendicular to the thickness are not less than 5 times the thickness.

[0124] This preferred embodiment can well balance the heating effect and heating efficiency of surgical irrigation fluid under common ambient temperature conditions.

[0125] The following description, in conjunction with Figures 7-10, illustrates the practical application of the present disclosure and its further technical advantages, including an intraoperative irrigation device incorporating a preferred embodiment of the irrigation fluid heating assembly according to the present disclosure.

[0126] refer to Figures 7A-7B As can be understood in conjunction with other accompanying drawings, the irrigation fluid heating assembly for intraoperative irrigation equipment includes, as described above, and... Figure 1-6 The flushing fluid heating device 100 described in the figure and such Figures 7A-7B The flexible bag 9 shown is used to contain the rinsing fluid.

[0127] The flexible bag 9 has a liquid inlet connector 92 and a liquid outlet connector 93 on the same side for connecting a medical drainage tube. The flexible bag 9 also has a flow channel 91 connecting the liquid inlet connector 92 to the liquid outlet connector 93. The flow channel 91 in the flexible bag 9 has an M-shaped shape that reciprocates multiple times between the opposite sides of the flexible bag 9, and the M-shaped shape includes two or more V-shapes.

[0128] Important reference Figure 8-10 As shown, this disclosure also provides an intraoperative irrigation device including the irrigation fluid heating device 100 as described above, wherein the intraoperative irrigation device further includes:

[0129] A chassis 700 is provided with a heat insulation chamber 200, in which the flushing fluid heating device 100 and a cooling fan 220 arranged toward the flushing fluid heating device 100 are fixed. The heat insulation chamber is isolated from other areas inside the chassis 700 by a heat insulation chamber partition 210. The chassis 700 may also have a chassis heat dissipation opening 710.

[0130] A peristaltic pump 300 is disposed on the outer surface of the chassis 700;

[0131] An inlet clamp 900 and an outlet clamp 910 are used to clamp and fix the medical drainage hose. The inlet clamp 900 and the outlet clamp 910 are fixed to the outer surface of the housing 700, wherein the outlet clamp 910 is arranged adjacent to the flushing fluid heating device 100 in the heat insulation chamber.

[0132] The heat insulation chamber is located on the first side of the chassis 700. The outlet clamp 910 and the inlet clamp 900 are respectively arranged on the first side and the second side opposite to the first side on the outer surface of the chassis 700. The peristaltic pump 300 is arranged between the outlet clamp 910 and the inlet clamp 900.

[0133] It is understood that the medical drainage tubing (not shown) can be arranged in association with the peristaltic pump 300, thereby driving the liquid within the tubing to flow at the required flow rate by the peristaltic pump 300, which is connected to a stepper driver 310. The medical drainage tubing is connected to a liquid inlet connector 92 and a liquid outlet connector 93, thereby being driven by the peristaltic pump 300 to allow the liquid to flow into and subsequently out of the flexible bag 9, and to be directly heated by the heat conduction effect of the heat-conducting plate 1 described above during its flow within the flexible bag 9.

[0134] According to some optional specific embodiments, the intraoperative irrigation device may also be equipped with a temperature controller 500, a pressure conversion module 510, and a touch screen 800 for displaying monitoring parameters, which facilitates personnel to monitor the current working status of the irrigation device, including the real-time temperature of the irrigation fluid and the hydraulic pressure of the irrigation fluid. These components may also be associated with a PLC module set in the chassis and thus be controlled by pre-programmed logic.

[0135] Optionally, the chassis may also include a power supply unit 600 and a solid-state relay 610 for powering the various components in the control equipment.

[0136] An intraoperative irrigation device, including an irrigation fluid heating assembly according to a preferred embodiment of the present disclosure, and a flexible bag 9 therein, can help relevant personnel to accurately heat the irrigation fluid to be used to an appropriate temperature in the operating room to avoid discomfort to the patient caused by the irrigation fluid being too cold or too hot. It also takes into account the heating speed and efficiency to a certain extent and saves labor costs (attention of surgical personnel).

[0137] Furthermore, at least some of the preferred embodiments of this disclosure described in detail above may have the following advantages:

[0138] By using a reusable heating and / or pressurizing system in conjunction with low-cost consumables (flexible bags), the temperature and pressure of the irrigation fluid during surgery can be controlled more accurately, resulting in a lower overall cost.

[0139] The consumables have a simple structure, low cost, and are easy to install. They do not require sensors or other detection equipment, and disposable consumables also avoid the risk of cross-infection.

[0140] The rinsing speed and pressure of the rinsing fluid can be adjusted in real time via a peristaltic pump to address any unexpected situations encountered during surgery.

[0141] The temperature control of the rinsing fluid (i.e., heating and cooling) is rapid and real-time, and the related components are compact.

[0142] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A flexible bag for containing irrigation fluid used by an intraoperative irrigation device, characterized in that, The flexible bag comprises: a bag body having a fluid side wall defining a liquid flow channel, the fluid side wall being configured to define the liquid flow channel in an M shape of reciprocating multiple times, the fluid side wall having greater structural strength than other portions of the bag body, thereby being less likely to be bent; a liquid inlet connector and a liquid outlet connector for fitting a medical catheter, the liquid inlet connector and the liquid outlet connector being fixed to the same side of the bag body and communicating with both ends of the liquid flow channel, so that liquid flows through the entire liquid flow channel to flow from the liquid inlet connector to the liquid outlet connector; wherein the flexible bag has a flat shape, the maximum thickness of the flexible bag when filled with liquid is in the range of 3 mm to 10 mm, and the length and width perpendicular to the thickness direction are not less than 5 times the maximum thickness.

2. The flexible bag for containing irrigation fluid for use with an intraoperative irrigation device of claim 1, wherein, The bag body is made of a flexible material, and the liquid inlet connector and the liquid outlet connector each have a circular tube shape and are made of a hard material different from the bag body.

3. The flexible bag for containing irrigation fluid for use with an intraoperative irrigation device of claim 1, wherein, The liquid flow channel has substantially the same maximum cross section.

4. The flexible bag for containing irrigation fluid for use with an intraoperative irrigation device of claim 3, wherein, The liquid flow channel reciprocates multiple times between opposite ends of the bag body, thereby forming an M shape, the M shape including two or more U-shaped reciprocating sections, each reciprocating section being identical in shape and connected end to end.

5. The flexible bag for containing irrigation fluid for use with an intraoperative irrigation device of claim 4, wherein, Each U-shaped reciprocating section has two main body portions parallel to each other and a bent portion connecting the two main body portions.

6. The flexible bag for containing irrigation fluid for use with an intra-operative irrigation device of claim 5, wherein, The bag body, when not filled with liquid, has a rectangular shape having a long side and a short side, the liquid inlet connector and the liquid outlet connector being fixed to the two ends of one short side away from each other, and the main body portions of each reciprocating section of the liquid flow channel extending in the direction of the long side.

7. A rinse fluid heating assembly comprising a flexible bag for containing rinse fluid as claimed in any one of claims 1-6 and a rinse fluid heating device, wherein, The irrigation liquid heating device comprises: two heat-conducting plates detachably assembled together, the two heat-conducting plates forming a flat recess in the middle body portion of the inner side surfaces abutting each other, thereby forming a hollow space together by the flat recess, the hollow space being adapted to accommodate the flexible bag and allowing the flexible bag filled with irrigation liquid and the inner side surfaces of the two heat-conducting plates to be in surface contact; a heating element attached to the outer side surface of the heat-conducting plate; a temperature sensor fixedly installed at the flat recess of one of the heat-conducting plates.

8. The flush heating assembly of claim 7, wherein, The heat-conducting plate has a rectangular shape and has a door-shaped reinforcing frame along the periphery of the rectangular shape, the door-shaped reinforcing frame being convex on both the inner side and the outer side relative to the middle body portion of the heat-conducting plate; The flushing liquid heating device further comprises a port connecting piece which is rectangular and has a long and narrow opening, and four corner portions of the port connecting piece are respectively connected to or engaged with the frame ends of the door-shaped reinforcing frame of the two heat-conducting plates, so that the long and narrow opening is connected to the hollow space, wherein two circular orifices are arranged in the long and narrow opening, the maximum width of the circular orifices is greater than the width of the long and narrow opening except the circular orifices, and the circular orifices are configured to be able to clampingly fix the liquid inlet connector and the liquid outlet connector of the flexible bag.

Images