Intraoperative flushing equipment, flushing fluid heating device used for intraoperative flushing equipment and flushing fluid heating assembly

Abstract

The utility model discloses an intraoperative flushing device and a flushing fluid heating device and a flushing fluid heating assembly used for the intraoperative flushing device, the flushing fluid heating device comprises two heat conducting plates which are detachably assembled together, at least one of the heat conducting plates forms a flat-plate-shaped concave part at the middle main body part of the adjacent inner side surfaces of the two heat conducting plates, and the flat-plate-shaped concave part is arranged in the middle main body part of the adjacent inner side surfaces of the two heat conducting plates. The two heat-conducting plates are arranged in parallel, so that a hollow space formed by a flat-plate-shaped concave part is formed between the two heat-conducting plates, the hollow space is suitable for receiving a flexible bag used for containing flushing fluid and enabling the flexible bag to be in surface contact with the inner side surfaces of the two heat-conducting plates, and the flexible bag is provided with a fluid inlet and outlet through which the flushing fluid flows in and out; the heating element is attached to the outer side surface of the heat conducting plate; and the temperature sensor is fixedly mounted at the flat-plate-shaped concave part of one of the heat conducting plates. According to the utility model, the flushing fluid to be used can be accurately heated 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] The present disclosure relates to medical devices, and in particular to an intraoperative irrigation device, an irrigation fluid heating apparatus for the intraoperative irrigation device, and an irrigation fluid heating assembly, which can be applied in particular for example in arthroscopy and other surgeries for irrigating solid particles and liquid generated during the surgery. BACKGROUND

[0002] During the surgery process of many types of surgical operations, it is important to ensure that the surgeon can clearly observe the surgical site or cavity of the patient and the state of the human tissue at the corresponding position, and the surgeon can obtain a clear visual field to help implement precise and efficient surgical operations. In such a surgery process, for example, in arthroscopic surgery, additional liquid or solid particles are generally generated at the surgical site or in the vicinity thereof, and therefore an intraoperative irrigation device is generally used for irrigation to provide a clear surgical view for the surgeon.

[0003] With the wide application of surgical irrigation devices, the deficiencies of some existing surgical irrigation devices have become increasingly apparent. For example, the existing surgical irrigation devices have a simple pressurization function to achieve a certain irrigation fluid flow rate or pressure to remove the liquid or solid particles generated during the surgery, but the temperature of the irrigation fluid depends on the ambient temperature. Since the ambient temperature is often low, the intraoperative irrigation device in the prior art lacking temperature adjustment capability often causes discomfort to the patient in actual application, and even causes strong discomfort to the patient in some low-temperature environments.

[0004] Therefore, some existing solutions attempt to remedy the above deficiencies of the surgical irrigation device. One approach is to uniformly store the surgical irrigation fluid in a constant-temperature environment such as a warm room with a suitable temperature for heating, and to transfer it to the operating room for operation when needed. Another approach is to use a device such as a hot air blower to quickly heat the container of the irrigation fluid in order to heat the irrigation fluid to be used.

[0005] However, these solutions have the disadvantage of being inconvenient to use in complex and possibly low-temperature operating room environments. In addition, these solutions are highly dependent on the experience and operation of surgical assistants, which not only increases labor costs but also often fails to keep the irrigation fluid at the optimal or most appropriate irrigation fluid temperature for the patient's comfort during the use of the irrigation device during the surgery. Furthermore, in order to quickly heat, the heating power is increased, which may sometimes cause the irrigation fluid to be heated to an excessively high (overheated) temperature that also causes discomfort to the patient. In other words, the existing solutions cannot achieve satisfactory results in terms of the accuracy of the warming control of the irrigation fluid.

[0006] Therefore, there is an urgent need to provide a new irrigation fluid heating apparatus for an intraoperative irrigation device to at least partially alleviate or solve the above problems and deficiencies existing in the prior art solutions. Utility model content

[0007] One purpose of the present disclosure is to provide an intraoperative irrigation device, an irrigation liquid heating device therefor, and an irrigation liquid heating assembly, in order to overcome the above-mentioned defects of the existing intraoperative irrigation devices.

[0008] The present disclosure provides an irrigation liquid heating device for an intraoperative irrigation device, characterized in that the irrigation liquid heating device comprises:

[0009] Two heat-conducting plates which are detachably assembled together, at least one of the heat-conducting plates forms a flat recess in the middle body part of the inner side surface thereof which abuts against each other, thereby forming a hollow space in the middle of the two heat-conducting plates which is constituted by one or two flat recesses, the hollow space is adapted to receive a flexible bag for containing irrigation liquid, and the flexible bag and the inner side surface of the two heat-conducting plates are in surface contact with each other, the flexible bag has a fluid inlet and outlet for the inflow and outflow of irrigation liquid;

[0010] A heating element which is attached to the outer side surface of the heat-conducting plate;

[0011] A temperature sensor which is fixedly installed at the flat recess of one of the heat-conducting plates.

[0012] The irrigation liquid heating device provided by the present disclosure forms a thin plate-shaped hollow space by using two heat-conducting plates to accommodate a flexible liquid bag. The irrigation liquid flowing in and out of the flexible bag for the purpose of irrigation will cause the flexible bag to slightly bulge. Therefore, as long as there is a certain flow rate, the surface of the flexible bag in the hollow space will maintain stable surface contact with the inner side surface of the heat-conducting plate. The irrigation liquid in the flexible bag is heated by using the surface contact between the heat-conducting plate and the surface of the flexible bag. The real-time monitoring provided by such a heating method and the appropriately arranged temperature sensor allows the irrigation liquid to be used to be heated to the desired temperature in an environment similar to a small or micro constant-temperature room in a relatively fast manner. The heat-conducting plate can heat and maintain the irrigation liquid in the flexible bag at the target temperature in a relatively short time at a relatively low temperature (i.e., the temperature difference with the initial temperature of the irrigation liquid is small), and the situation of heating the irrigation liquid to an overheated state does not occur.

[0013] According to some embodiments of the present disclosure, the irrigation liquid heating device further comprises:

[0014] A surface heat dissipation structure which has a plurality of heat dissipation fins, is arranged on the outer side of the heating element, and is installed on the outer side of the heat-conducting plate via a connecting piece.

[0015] According to some embodiments of the present disclosure, the two heat-conducting plates have the same shape, and the two flat plate-shaped recesses of both of them together constitute the hollow space.

[0016] In this way, the heat-conducting plates in the form of thin plates can still have certain structural strength while the production cost of the flushing liquid heating device is relatively low.

[0017] According to some embodiments of the present disclosure, the heat-conducting plates have a rectangular shape, and have a door-shaped reinforcing frame along the periphery of the rectangular shape, which is raised on both the inner side and the outer side relative to the middle main body part of the heat-conducting plate.

[0018] According to some embodiments of the present disclosure, the flushing liquid heating device further comprises:

[0019] The port connecting piece is rectangular and has an elongated opening, and the four corner portions of the port connecting piece are respectively connected to or engaged with the frame ends of the door-shaped reinforcing frames of the two heat-conducting plates, so that the elongated opening is connected to the hollow space.

[0020] According to some preferred embodiments of the present disclosure, two special-shaped apertures are arranged in the elongated opening, the maximum width of the special-shaped apertures is greater than the width of the elongated opening except for the special-shaped apertures, and the special-shaped apertures are configured to receive the liquid inlet connector and the liquid outlet connector of the flexible bag forming the fluid inlet and outlet.

[0021] In this way, the two special-shaped apertures are designed to provide certain fixing or limiting action on the two fluid connectors, and in turn play a certain fixing or limiting action on the flexible bag, thereby ensuring the high use reliability of the flushing liquid heating device in the operating room environment.

[0022] According to some preferred embodiments of the present disclosure, the flushing liquid heating device further comprises:

[0023] The pressure sensor is configured to be able to sense the change of fluid pressure in the flexible bag received in the hollow space.

[0024] According to some preferred embodiments of the present disclosure, the two heat-conducting plates are assembled such that at the first side frame of the door-shaped reinforcing frame, the two heat-conducting plates are completely fixed to each other, and at the second side frame of the door-shaped reinforcing frame opposite to the first side frame, the two heat-conducting plates are connected to each other via the torque sensor to have a relative movement freedom degree in the direction perpendicular to the heat-conducting plates.

[0025] The torque sensor comprises a main body made of flexible material capable of deformation, a strain gauge accommodating cavity in which a strain gauge is arranged is formed in the middle of the main body, thereby forming a deformation wall part close to one of the two heat-conducting plates on each lateral side of the strain gauge accommodating cavity, the main body is connected to one of the two heat-conducting plates via a first loading end and a second loading end respectively, wherein the first loading end and the second loading end are diagonally arranged relative to the strain gauge accommodating cavity, the torque sensor is configured to measure the torque loaded via the first loading end and the second loading end by the strain gauge and indirectly measure the change of fluid pressure in the flexible bag received in the hollow space according to the torque.

[0026] According to some embodiments of the present disclosure, the heating element is an electric heating element, and the H-shaped reinforcing frame is formed with notches at the same positions on the inner side and the outer side.

[0027] The inner side notches are used for the relevant connection lines of the temperature sensor, and the outer side notches are used for the power supply lines of the electric heating element.

[0028] According to some embodiments of the present disclosure, the heating element is a thermoelectric cooling element based on Peltier effect, and the heat-conducting plate is made of aluminum or aluminum alloy. The thermoelectric cooling element, i.e. semiconductor cooling element, constitutes a heat pump that cools one side and heats the other side in the present disclosure, so as to adjust the heat-conducting plate to the most appropriate temperature.

[0029] According to some preferred embodiments of the present disclosure, the thermoelectric cooling element is centrally attached to the outer surface of the heat-conducting plate, and the total area of the thermoelectric cooling element is not less than 0.2 times the area of the flat plate-shaped recess.

[0030] According to some embodiments of the present disclosure, the thickness of the middle main body part of the heat-conducting plate is in the range of 2mm to 6mm, the thickness of the hollow space formed by one or two flat plate-shaped recesses is in the range of 3mm to 10mm, and the length and width perpendicular to the thickness direction are not less than 5 times the thickness.

[0031] This embodiment can well balance the heating effect and heating efficiency of the surgical irrigation fluid under common environmental temperature conditions.

[0032] The present disclosure also provides an irrigation fluid heating assembly for an intraoperative irrigation device, which comprises the irrigation fluid heating device as described above and a flexible bag for containing the irrigation fluid, wherein the flexible bag is provided with a liquid inlet connector and a liquid outlet connector on the same side for sleeving medical flow guide hoses respectively, and the flexible bag further has a flow channel communicating from the liquid inlet connector to the liquid outlet connector.

[0033] According to some embodiments of the present disclosure, the flow channel in the flexible bag presents an M-shaped shape reciprocating between opposite sides of the flexible bag for multiple times, and the M-shaped shape comprises two or more V-shaped characters.

[0034] The present disclosure also provides an intraoperative irrigation device comprising the irrigation liquid heating device as described above, wherein the intraoperative irrigation device further comprises:

[0035] a machine case provided with a heat insulation chamber, the heat insulation chamber being fixed with the irrigation liquid heating device and a heat dissipation fan arranged towards the irrigation liquid heating device;

[0036] a peristaltic pump arranged on the outer surface of the machine case;

[0037] an inlet pipe clamp and an outlet pipe clamp for clamping a medical drainage hose, the inlet pipe clamp and the outlet pipe clamp being fixed on the outer surface of the machine case, wherein the outlet pipe clamp is arranged adjacent to the irrigation liquid heating device in the heat insulation chamber.

[0038] According to some embodiments of the present disclosure, the heat insulation chamber is located at a first side in the machine case, the outlet pipe clamp and the inlet pipe clamp are arranged at a first side and a second side opposite to the first side on the outer surface of the machine case respectively, and the peristaltic pump is arranged between the outlet pipe clamp and the inlet pipe clamp.

[0039] On the basis of common general knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily, thereby obtaining each preferred example of the present disclosure.

[0040] The positive progress effect of the present disclosure is that:

[0041] The intraoperative irrigation device, the irrigation liquid heating device therefor and the irrigation liquid heating assembly according to the present disclosure help to heat the irrigation liquid to be used to a proper temperature in the operating room more accurately to avoid the discomfort of the patient caused by the overcooling or overheating of the irrigation liquid, and to a certain extent, the heating speed, efficiency and manpower (attention of the surgical staff) cost are saved. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 A perspective view of the irrigation liquid heating device for the intraoperative irrigation device according to the preferred embodiments of the present disclosure is schematically shown.

[0043] Figure 2 A perspective view of the irrigation liquid heating device for the intraoperative irrigation device according to the preferred embodiments of the present disclosure is schematically shown. Figure 1 A top view (viewed from the second side frame upper direction to the lower direction) of the irrigation liquid heating device visible in the figure.

[0044] Figure 3 A perspective view of the irrigation liquid heating device for the intraoperative irrigation device according to the preferred embodiments of the present disclosure is schematically shown.Figure 1 a perspective view and Figure 1 substantially identical.

[0045] Figure 4 schematically shows Figure 3 a perspective view and Figure 3 substantially identical.

[0046] Figure 5 schematically shows Figure 1 a perspective view and

[0047] Figure 6 schematically shows one example of a port connector in a rinse fluid heating device for an intraoperative rinsing apparatus according to a preferred embodiment of the present disclosure.

[0048] Figure 7 schematically shows a flexible bag for containing rinse fluid in a rinse fluid heating assembly according to a preferred embodiment of the present disclosure.

[0049] Figure 8 schematically shows a perspective view of an intraoperative rinsing apparatus according to a preferred embodiment of the present disclosure.

[0050] Figure 9 schematically shows a perspective view of an intraoperative rinsing apparatus according to a preferred embodiment of the present disclosure.

[0051] Figure 10 schematically shows a front view of an intraoperative rinsing apparatus according to a preferred embodiment of the present disclosure.

[0052] BRIEF DESCRIPTION OF THE DRAWINGS

[0053] 1: heat conducting plate

[0054] 11: door-shaped reinforcing frame

[0055] 12: inner side surface of the heat conducting plate (forms a hollow space)

[0056] 13: middle main body portion

[0057] 14: notch

[0058] 15: first side frame

[0059] 16: second side frame

[0060] 17: recess

[0061] 18: attachment position of the temperature sensor

[0062] 2: heating element

[0063] 3: surface heat dissipation structure

[0064] 4: port connector

[0065] 41: narrow opening

[0066] 42: special-shaped orifice

[0067] 5: torque sensor

[0068] 51: strain gauge accommodating cavity

[0069] 52: deformed wall portion

[0070] 53: first loading end

[0071] 54: second loading end

[0072] 9: flexible bag

[0073] 91: flow channel

[0074] 92: liquid inlet connector

[0075] 93: liquid outlet connector

[0076] 100: flushing liquid heating device

[0077] 200: heat insulation chamber

[0078] 210: heat insulation chamber partition

[0079] 220: heat dissipation fan

[0080] 300: peristaltic pump

[0081] 310: step motor driver

[0082] 400: PLC module

[0083] 500: temperature control meter

[0084] 510: pressure conversion module

[0085] 600: power supply device

[0086] 610: solid state relay

[0087] 700: case

[0088] 710: case heat dissipation opening

[0089] 800: touch screen

[0090] 900: inlet pipe clamp

[0091] 910: outlet tube clamp DETAILED DESCRIPTION

[0092] The preferred embodiments of the present application will be further described in conjunction with the drawings of the specification, the following description is exemplary, not limiting the present application, any other similar cases also fall within the scope of the present application.

[0093] In the following detailed description, directional terms such as "left", "right", "up", "down", "front", "back", etc. are used with reference to the orientation of the figures described. The components of the embodiments of the present application can be placed in different directions, and the directional terms are used for the purpose of example and are not limiting.

[0094] From the above description and the following more detailed exemplary description of the detection box according to the preferred embodiments of the present application, those skilled in the art will be able to understand that the present application can be well applied to different operating room environments, especially under different environmental temperature conditions, to more accurately heat the flushing liquid to be used in the operating room to the appropriate temperature to avoid the discomfort of the patient caused by the flushing liquid being too cold or too hot, and to take into account the heating speed, efficiency and not rely on personnel experience.

[0095] Figures 1-6 The flushing liquid heating device 100 for intraoperative irrigation equipment according to the preferred embodiments of the present application is schematically shown from different angles and aspects. Figure 7 An example of a flexible bag 9 for containing flushing liquid, which is particularly suitable for use with the flushing liquid heating device 100, is schematically shown. Figures 8-10 The intraoperative irrigation equipment according to the preferred embodiments of the present application is further shown in order to be able to more conveniently and clearly understand how to apply the technical solutions described in the present disclosure and the more optimal technical effects that can be achieved thereby.

[0096] First, with reference to Figures 1-4 The flushing liquid heating device 100 for intraoperative irrigation equipment according to the preferred embodiments of the present application includes, as shown:

[0097] The two heat-conducting plates 1 are detachably assembled together, at least one of the heat-conducting plates 1 forms a flat recess in the middle body portion 13 of the inner side surface thereof that abuts against the other, thereby forming a hollow space in the middle of the two heat-conducting plates 1 consisting of one or two flat recesses, the hollow space being adapted to receive a flexible bag 9 for containing flushing liquid, and such that face contact occurs between the flexible bag 9 and the inner side surface 12 of the two heat-conducting plates 1, the flexible bag 9 having a fluid inlet and outlet for the flow of flushing liquid;

[0098] a heating element 2 attached to the outer side surface of the heat conducting plate 1;

[0099] a temperature sensor fixedly installed at the flat plate-shaped recess of one of the heat conducting plates 1;

[0100] a surface heat dissipation structure 3 having a plurality of heat dissipation fins arranged on the outer side of the heating element 2 and mounted on the outer side of the heat conducting plate 1 via a connecting member.

[0101] In which, the two heat conducting plates 1 can optionally have the same shape or substantially the same shape, and the two flat plate-shaped recesses together form the hollow space.

[0102] Although the hollow space formed by the flat plate-shaped recesses in the assembled state of the two heat conducting plates 1 is not directly shown in the figures for its outer contour as it is inside the flushing liquid heating device 100, reference to these figures, especially the figures 1 and 2, will make it clear. Figures 3-4 It can be understood that the flushing liquid heating device 100 in the embodiment forms a thin plate-shaped hollow space with the two heat conducting plates 1 to accommodate the flexible liquid bag, and the flushing liquid flowing in and out of the flexible bag 9 for flushing will make the flexible bag 9 slightly bulge, so that 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 side surface 12 of the heat conducting plate 1, and the heat conducting plate 1 and the surface of the flexible bag 9 are used to heat the flushing liquid in the flexible bag 9.

[0103] The thickness of this thin plate-shaped hollow space is much smaller or significantly smaller than the size in the other two directions, and it is in contact with the two heat conducting plates 1 on both sides in the thickness direction, which means that the contact area for heat conduction in such a heating method is relatively large compared to the volume of the hollow space and the flexible liquid bag contained therein, which makes the heat conduction affect the temperature change of the flushing liquid in the flexible bag 9 very efficiently. On this basis, real-time monitoring provided by the appropriately arranged temperature sensor enables the flushing liquid to be heated to the desired temperature in this environment similar to a small or micro constant-temperature room relatively quickly, in which the heat conducting plate 1 can heat and maintain the flushing liquid in the flexible bag 9 at the target temperature in a relatively short time at a relatively low temperature (i.e. with a small temperature difference from the initial temperature of the flushing liquid), without the risk of accidentally overheating the flushing liquid.

[0104] The environment approximating to a small or micro constant temperature room and the flat or sheet shape of the present application provide that the temperature of the irrigation liquid required by the surgery is kept near the desired temperature, and the patient is provided with the best comfort, while the energy consumption and cost efficiency are better due to the fact that there is no need to implement a large range of temperature control or high power heating (for example by hot air).

[0105] As shown in the drawings, in the preferred embodiment of the present application, the heat conducting plate 1 has a rectangular shape, and has a door-shaped reinforcing frame 11 along the periphery of the rectangular shape, which is raised on both the inner side and the outer side relative to the middle main body part 13 of the heat conducting plate 1.

[0106] In some further preferred embodiments, the thickness of the main part of the heat conducting plate 1, i.e. the middle main body part 13, can be very thin, for example preferably 3-5 mm thick, and therefore the outer periphery of the heat conducting plate 1 needs to be raised on both the inner side and the outer side to a certain height to provide the necessary structural strength to avoid deformation, and the raised peripheral frame can also provide assembly positions for assembly or fitting, such as connecting holes, fastener holes, etc.

[0107] According to some preferred embodiments of the present application, referring to the drawings Figures 1-4 and especially referring to the drawings Figure 1 and 6 As shown, the irrigation liquid heating device 100 further comprises:

[0108] A port connecting piece 4, which is rectangular and has a long opening 41, and the four corner parts of the port connecting piece 4 are respectively connected or engaged with the frame ends of the door-shaped reinforcing frames 11 of the two heat conducting plates 1, so that the long opening 41 is connected with the hollow space.

[0109] Further preferably, two special-shaped apertures 42 are provided in the long opening 41, the maximum width of the special-shaped apertures 42 is greater than the width of the long opening 41 except for the special-shaped apertures 42, and the special-shaped apertures 42 are configured to receive the liquid inlet connector 92 and the liquid outlet connector 93 of the flexible bag 9 forming the fluid inlet and outlet.

[0110] In this way, the two special-shaped apertures 42 can play a certain fixing or limiting role on the flexible bag 9 by fixing or limiting the two fluid connectors, improving the reliability.

[0111] According to some preferred embodiments of the present application, referring to the drawings Figures 1-6 As shown, according to some preferred embodiments of the present application, the irrigation liquid heating device 100 further comprises a pressure sensor configured to be able to sense the change of the fluid pressure in the flexible bag 9 received in the hollow space.

[0112] More preferably, especially with reference to Figure 4 and in combination with Figure 3 As shown, the two heat-conducting plates are assembled such that at the first side frame of the door-shaped reinforcing frame, the two heat-conducting plates are completely fixed to each other, while at the second side frame of the door-shaped reinforcing frame opposite to the first side frame, the two heat-conducting plates are connected to each other via the torque sensor 5 to have a relative movement freedom degree in the direction perpendicular to the heat-conducting plates.

[0113] With reference to Figure 4 As shown, the two heat-conducting plates 1 can be provided with block-shaped recesses 17 at the second side, and the torque sensor 5 or its main body is adapted to be mounted or assembled to the block-shaped recesses 17, of course, the block-shaped recesses 17 form the mounting space of the torque sensor and the outer shape of the torque sensor 5 are basically adapted, and the specific shape can be different from the example shown in the figure.

[0114] The torque sensor 5 comprises a main body made of a flexible material capable of being deformed, a strain gauge accommodating cavity 51 in which a strain gauge is arranged is formed in the middle of the main body, so that a deformation wall part 52 close to one of the heat-conducting plates is formed on each lateral side of the strain gauge accommodating cavity 51, and 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, wherein the first loading end 53 and the second loading end 54 are diagonally arranged relative to the strain gauge accommodating cavity 51, and the torque sensor 5 is configured to be capable of measuring the torque loaded via the first loading end 53 and the second loading end 54 by the strain gauge and indirectly measuring the change of the fluid pressure in the flexible bag 9 received in the hollow space according to the torque. Wherein, the strain gauge accommodating cavity 51 can be preferably a hollow through hole, and the through hole is in the shape of a double circle as shown in the figure to facilitate the arrangement of the strain gauge therein. Figure 4 As shown in the middle of the figure, the strain gauge accommodating cavity 51 can be preferably a hollow through hole, and the through hole is in the shape of a double circle as shown in the figure to facilitate the arrangement of the strain gauge therein.

[0115] It can be understood that in Figure 4 As shown in this preferred partial design, the two heat-conducting plates 1 are assembled to have a relative movement freedom degree in the direction perpendicular to the heat-conducting plates 1 only at the second side frame 16 opposite to the first side frame 15, i.e. at Figure 3The 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.

[0116] 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.

[0117] 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.

[0118] Based on some preferred embodiments of this disclosure, particularly referring toFigure 5 As shown, the heating element 2 is an electric heating element 2, and the door-shaped reinforcing frame 11 is formed with notches 14 at the same positions on the inner side and the outer side. The inner side notches 14 are for wiring of a temperature sensor (preferably arranged at the attaching position 18 of the temperature sensor shown), and the outer side notches 14 are for wiring of the electric heating element 2.

[0119] According to some preferred embodiments of the present disclosure, the heating element 2 is a thermoelectric refrigeration sheet based on Peltier effect, and the heat-conducting plate 1 is made of aluminum or aluminum alloy material.

[0120] According to some preferred embodiments of the present disclosure, the thermoelectric refrigeration sheet is centrally attached to the outer side surface of the heat-conducting plate 1, and the total area of the thermoelectric refrigeration sheet is not less than 0.2 times the area of the flat plate-shaped recess.

[0121] According to some preferred embodiments of the present disclosure, the thickness of the middle body portion 13 of the heat-conducting plate 1 is in the range of 2mm to 6mm, the thickness of the hollow space constituted by one or two flat plate-shaped recesses is in the range of 3mm to 10mm, and the length and width perpendicular to the thickness direction of the hollow space are not less than 5 times the thickness.

[0122] This preferred embodiment can well balance the heating effect and heating efficiency for the surgical irrigation fluid under common environmental temperature conditions.

[0123] In the following, further embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Figures 7-10 The examples of the flexible bag 9 for containing the irrigation fluid shown in cooperation with the irrigation fluid heating device 100 and Figures 8-10 The in-surgery irrigation apparatus according to the preferred embodiments of the present disclosure is shown to illustrate the practical application and advantages of the present disclosure.

[0124] With reference to Figure 7 and in cooperation with other drawings, it can be understood that the irrigation fluid heating assembly for the in-surgery irrigation apparatus comprises the irrigation fluid heating device 100 as described before and depicted in Figures 1-6 and the flexible bag 9 for containing the irrigation fluid as shown in Figure 7 .

[0125] Among them, the flexible bag 9 is provided with a liquid inlet connector 92 and a liquid outlet connector 93 for sleeving medical flow guide hoses respectively on the same side, and the flexible bag 9 also has a flow channel 91 that communicates from the liquid inlet connector 92 to the liquid outlet connector 93. The flow channel 91 in the flexible bag 9 is in the shape of M that reciprocates multiple times between opposite sides of the flexible bag 9, and the M shape includes two or more V shapes.

[0126] With particular reference toFigures 8-10 As shown, the present disclosure also provides an intraoperative irrigation device comprising the irrigation fluid heating device 100 as described above, wherein the intraoperative irrigation device further comprises:

[0127] The machine case 700 is provided with a heat insulation chamber 200, in which the irrigation fluid heating device 100 and a heat dissipation fan 220 arranged towards the irrigation fluid heating device 100 are fixed, and the heat insulation chamber is isolated from other areas in the machine case 700 by a heat insulation chamber partition 210, and the machine case 700 can also be provided with a machine case heat dissipation opening 710;

[0128] A peristaltic pump 300 is arranged on the outer surface of the machine case 700;

[0129] An inlet pipe clamp 900 and an outlet pipe clamp 910 for clamping and fixing the medical flow guide hose are fixed on the outer surface of the machine case 700, and the outlet pipe clamp 910 is arranged adjacent to the irrigation fluid heating device 100 in the heat insulation chamber.

[0130] The heat insulation chamber is located at a first side in the machine case 700, the outlet pipe clamp 910 and the inlet pipe clamp 900 are arranged at the first side and a second side opposite to the first side on the outer surface of the machine case 700 respectively, and the peristaltic pump 300 is arranged between the outlet pipe clamp 910 and the inlet pipe clamp 900.

[0131] It can be understood that the medical flow guide hose, which is not shown, can be arranged in association with the peristaltic pump 300, so that the liquid in the pipe is driven to flow at the required flow rate by the peristaltic pump 300 connected with the step driver 310. The medical flow guide hose is connected to the liquid inlet joint 92 and the liquid outlet joint 93, so as to be driven by the peristaltic pump 300 to flow into and then out of the flexible bag 9, and to be directly heated by the heat conduction of the heat conduction plate 1 described above during the flow in the flexible bag 9.

[0132] According to some optional embodiments, the intraoperative irrigation device can also be provided in the machine case with a temperature control table 500, a pressure conversion module 510 and a touch screen 800 for displaying monitoring parameters, which facilitate personnel to monitor the working state of the current irrigation device, including the real-time temperature and pressure of the irrigation fluid, and these components can also be associated with the PLC module arranged in the machine case to be controlled by the pre-programmed logic.

[0133] Optionally, the machine case can also be provided with a power supply device 600 and a solid state relay 610 for controlling the power supply of each component in the device

[0134] The intraoperative irrigation device, the irrigation liquid heating device and the irrigation liquid heating assembly described in the above preferred embodiments of the present disclosure help to more accurately heat the irrigation liquid to be used in the operating room to the appropriate temperature to avoid the discomfort of the patient caused by the overcooling or overheating of the irrigation liquid, and to some extent, the heating speed, efficiency and manpower (attention of the surgical staff) cost are taken into account.

[0135] In addition, at least part of the preferred embodiments of the present disclosure described in detail above can further have the following advantages:

[0136] The temperature and pressure of the irrigation liquid in the operation can be more accurately controlled by using a reusable heating and / or pressurizing system combined with low-cost consumables (flexible bags), and the total cost of the scheme is low.

[0137] The consumable structure is simple, the cost is low, and the installation is convenient, and no sensor or other detection equipment needs to be arranged on the consumable, and the disposable consumable also avoids the risk of possible cross infection;

[0138] The irrigation speed and pressure of the irrigation liquid can be adjusted in real time through the peristaltic pump to solve the sudden situation encountered in the operation;

[0139] The temperature control (i.e. heating and cooling) of the irrigation liquid is rapid and real-time, and the volume of the related components is small.

[0140] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, the protection scope of the present application 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 the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A device for heating irrigation fluid in an intraoperative irrigation system, characterized in that, The rinsing fluid heating device includes: Two heat-conducting plates are detachably assembled together, at least one of the heat-conducting plates forming a flat plate-shaped recess in the middle main body portion of the inner side surfaces of the two adjacent plates, thereby forming a hollow space between the two heat-conducting plates consisting of one or two of the flat plate-shaped recesses, the hollow space being adapted to receive a flexible bag for containing rinsing fluid, and such that the flexible bag and the inner side surfaces of the two heat-conducting plates are in surface contact, the flexible bag having a fluid inlet and outlet for rinsing fluid to flow in and out; A heating element is attached to the outer surface of the heat-conducting plate; A temperature sensor is fixedly installed in the flat recess of one of the heat-conducting plates.

2. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 1, characterized in that, The flushing fluid heating device further includes: A surface heat dissipation structure having multiple heat dissipation fins disposed on the outside of the heating element and mounted on the outside of the heat-conducting plate via a connector.

3. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 2, characterized in that, The two heat-conducting plates have the same shape, and their two flat recesses together form the hollow space.

4. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 3, characterized in that, The heat-conducting plate has a rectangular shape and a gate-shaped reinforcing frame along the perimeter 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.

5. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 4, characterized in that, The flushing fluid heating device further includes: The port connector is rectangular and has a narrow opening. The four corners of the port connector are connected to or joined to the ends of the frame of the gate-shaped reinforcing frame of the two heat-conducting plates, so that the narrow opening is connected to the hollow space.

6. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 5, characterized in that, The elongated opening has two irregularly shaped orifices, the maximum width of which is greater than the width of the elongated opening excluding the irregularly shaped orifices, and is configured to receive the liquid inlet connector and liquid outlet connector of the flexible bag that forms the fluid inlet and outlet.

7. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 6, characterized in that, The flushing fluid heating device further includes: A pressure sensor configured to sense changes in fluid pressure received in the flexible bag within the hollow space.

8. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 6, characterized in that, 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 at the second side frame of the gate-shaped reinforcing frame opposite to the first side frame, the two heat-conducting plates are connected to each other via a torque sensor to have relative degrees of freedom of movement in a direction perpendicular to the heat-conducting plates. The torque sensor includes a body made of a deformable flexible material, with a strain gauge housing cavity in the middle of the body. Deformable walls are formed on both lateral sides of the strain gauge housing cavity, each close to one of the heat-conducting plates. The body is connected to one of the two heat-conducting plates via a first loading end and a second loading end, respectively. The first loading end and the second loading end are arranged diagonally relative to the strain gauge housing cavity. The torque sensor is configured to measure the torque applied via the first loading end and the second loading end through the strain gauge and indirectly measure the change in fluid pressure received in the flexible bag within the hollow space based on the torque.

9. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 4, characterized in that, The heating element is an electric heating element, and the gate-shaped reinforcing frame has notches formed at the same positions on the inner and outer sides.

10. The irrigation fluid heating device for an intraoperative irrigation system as described in any one of claims 1-9, characterized in that, The heating element is a thermoelectric cooling chip based on the Peltier effect, and the heat-conducting plate is made of aluminum or aluminum alloy.

11. The irrigation fluid heating device for intraoperative irrigation equipment as described in claim 10, characterized in that, The thermoelectric cooling element is centrally attached to the outer surface of the heat-conducting plate, and the total area of ​​the thermoelectric cooling element is not less than 0.2 times the area of ​​the flat plate recess.

12. The irrigation fluid heating device for an intraoperative irrigation system as described in any one of claims 1-9, characterized in that, The thickness of the central main body of the heat-conducting plate is in the range of 2mm to 6mm, the thickness of the hollow space formed by one or two of the flat plate-shaped recesses is in the range of 3mm to 10mm, and the length and width of the hollow space in the direction perpendicular to the thickness are not less than 5 times the thickness.

13. A heating assembly for an intraoperative irrigation device, the heating assembly comprising a heating device for an irrigation fluid as described in any one of claims 1-12 and a flexible bag for containing the irrigation fluid, wherein, The flexible bag has a liquid inlet connector and a liquid outlet connector on the same side for connecting to a medical drainage tube, and the flexible bag also has a flow channel connecting the liquid inlet connector to the liquid outlet connector.

14. The irrigation fluid heating assembly for an intraoperative irrigation device as described in claim 13, characterized in that, The flow channels in the flexible bag are in an M-shaped pattern that reciprocates multiple times between opposite sides of the flexible bag, and the M-shaped pattern includes two or more V-shapes.

15. An intraoperative irrigation device comprising a heating device for the irrigation fluid as described in any one of claims 1-12, wherein, The intraoperative irrigation equipment also includes: A chassis equipped with a heat insulation chamber, wherein the flushing fluid heating device and a cooling fan arranged toward the flushing fluid heating device are fixed in the heat insulation chamber; A peristaltic pump, the peristaltic pump being disposed on the outer surface of the chassis; An inlet clamp and an outlet clamp for holding and fixing a medical drainage tube, the inlet clamp and the outlet clamp being fixed to the outer surface of the chassis, wherein the outlet clamp is arranged adjacent to the flushing fluid heating device in the heat insulation chamber.

16. The intraoperative irrigation device as described in claim 15, characterized in that, The heat insulation chamber is located on the first side of the chassis. The outlet pipe clamp and the inlet pipe clamp are respectively arranged on the first side and the second side opposite to the first side on the outer surface of the chassis. The peristaltic pump is arranged between the outlet pipe clamp and the inlet pipe clamp.

Images