Teaching device for pathology

Abstract

The invention relates to the field of pathology teaching, in particular to a pathology teaching device which comprises a storage box, an inner container sleeve shell detachably installed on the inner side wall face of the top of the storage box and a display table fixedly installed on the surface of one side of the storage box, and a motor is fixedly installed on the surface of one side of the inner container sleeve shell. The output end of the motor is fixedly connected with a rotating rod movably connected to the inner side wall face of the inner container sleeve shell in a sleeving mode, and the outer side surface of the rotating rod is movably connected with a rotating arm in a sleeving mode. When pathology teaching is carried out, a closed sleeve shell is opened, the closed sleeve shell is in lap joint with the top surface of a semi-arc strip through a swing arm, and at the moment, a motor is matched to rotate a rotating rod, so that a rotating arm on the outer side surface of the rotating rod is turned over, and when storage boxes at different positions are turned over and perpendicular, the rotating rod is rotated; and through connection between the storage box and the clamping rod and falling force generated by the gravity of the pathological section in the storage box, the storage box is kept in a falling state.

Description

Technical Field

[0001] The invention belongs to the technical field of pathology teaching, in particular to a teaching device for pathology. Background Art

[0002] Pathology is a basic medical course that studies the causes, mechanisms, and development of human diseases, as well as the morphological, structural, functional, and metabolic changes of the body during disease, and the pathological outcomes. For this reason, pathology has long been considered a "bridge discipline" between basic and clinical medicine, fully demonstrating its irreplaceable and important role in medicine. This is determined by the nature and mission of pathology. Pathology is both a basic medical discipline and a highly practical, clinical discipline, also known as diagnostic pathology or surgical pathology. Depending on the subject of study, it can be divided into human pathology and experimental pathology. Pathological diagnosis often involves examining organs, tissues, cells, or fluids obtained from patients or from within their bodies for diagnostic purposes, and includes autopsies, surgical pathology, and cytology.

[0003] A patent with publication number CN215456967U discloses a teaching display device for pathology, including a mounting base and a fixed frame, the upper surface of the mounting base is provided with a damping rotator, the fixed frame is rotatably connected to the upper surface of the mounting base through the damping rotator, the inner wall of the fixed frame is rotatably connected to the display frame, the inner walls of both sides of the display frame are provided with sliding through holes, the inner walls of the two sliding through holes are slidably connected with sliding columns, and one end of the sliding column is fixedly installed with a pull plate; the teaching display device for pathology, in actual use, can drive the adjustment screw to rotate by rotating the rotating disk, and the rotation of the adjustment screw can adjust the angle of the display frame by moving the adjustment block and the adjustment rod, so that students can clearly view the pathology model, and at the same time, by setting the damping rotator, the horizontal direction of the display frame can be adjusted, thereby effectively improving the practicality of the display device and improving teaching efficiency.

[0004] In the current existing technology, it is necessary to master pathological sections in the process of learning pathology. In order to enable students to understand pathological sections more intuitively, pathological sections are often used. The existing pathological section display device is mostly a fixed platform, and the pathological sections are stored in a specific location. Since the pathological sections need to be stored in a dust-free, sealed, and oxygen-free environment, and the distance teachers walk when taking the pathological sections is relatively long, it is easy to cause the pathological sections to be contaminated during the process of taking them. In addition, there are too many pathological sections in the storage box, and a large range of searches are required each time. The long search will cause the low-temperature gas in the storage box to dissipate.

[0005] To this end, the present invention provides a pathology teaching device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: a pathology teaching device described in the present invention comprises a storage box and an inner liner shell detachably mounted on the inner wall surface of the top of the storage box, and a display stand fixedly mounted on the side surface of the storage box, wherein a motor is fixedly mounted on one side surface of the inner liner shell, and an output end of the motor is fixedly connected to a rotating rod movably sleeved on the inner wall surface of the inner liner shell, and a rotating arm movably sleeved on the outer surface of the rotating arm, and a clamping rod movably sleeved on the outer surface of the rotating arm, wherein the inner wall surface of the inner liner shell is provided with limiting grooves at the edge positions around the periphery, and one end of the rotating arm is fixedly connected to a storage box movably sleeved on the inner wall surface of the limiting groove, and the storage box is movably sleeved on the outer surfaces of both ends of the clamping rod, and one end of the rotating arm is fixedly connected to the limiting arm movably sleeved on the inner wall surface of the limiting groove; The inner wall surface of the storage box is fixedly connected to a lap platform at the bottom edge position, the inner wall surface of the storage box is fixedly connected to a lap strip at the top edge position, the inner wall surface of the storage box is fixedly connected to a support limit strip on the top surface of the lap strip, and the top surface of the lap strip is fixedly connected to an elastic wire.

[0008] Preferably, a sealing soft plate movably overlapped on the top of the elastic wire is movably sleeved on the inner wall of the storage box, and a closed snap-on cover movably overlapped on the top outer surface of the sealing soft plate is swingably connected to the top surface of the storage box.

[0009] Preferably, a low-temperature nitrogen box is fixedly installed on both side edges of the bottom of the storage box, the output end of the low-temperature nitrogen box extends to the inner wall of the liner shell, and a circulating air duct is fixedly connected to the back of the storage box.

[0010] Preferably, one end of the circulating air duct passes through the storage box and is connected to the receiving end of the low-temperature nitrogen box, and the other end of the circulating air duct passes through the storage box and extends to the inner wall of the liner shell. A support rod is fixedly installed on one side surface of the storage box, and a semicircular arc bar is fixedly connected to one end of the support rod.

[0011] Preferably, a swing arm is fixedly installed on one side surface of the top of the storage box and on the top surface of the support rod, and one end of the swing arm is swingably connected to a closed shell that is movably overlapped on the outer surface of the top of the inner liner shell, and the outer surface of the closed shell is movably overlapped on the inner wall of the semicircular arc strip.

[0012] Preferably, a cutting display groove is provided on the top surface of the display stand and at one edge position, a fixing plate is fixedly connected to the top surface of the display stand and at both edge positions, and a limiting rod is fixedly connected to the outer surface of the fixing plate.

[0013] Preferably, a transparent glass plate is movably sleeved on the outer surface of the limit rod, a camera is fixedly mounted on the inner wall of the transparent glass plate, and an LED playback screen is fixedly mounted on the top surface of the display stand and on one side edge of the limit rod.

[0014] Preferably, a waste liquid collection box is fixedly installed on one side surface of the storage box and located at the bottom edge of the display stand, and a return air pipe arranged at the bottom edge of the cutting display groove is fixedly connected to the receiving end of the waste liquid collection box.

[0015] The beneficial effects of the present invention are as follows: 1. A pathology teaching device according to the present invention, after teaching of pathological sections, the pathological sections are placed on the top surface of the overlap table, and the sealing soft board is overlapped on the top surface of the elastic wire. At this time, the closed snap-fit cover is closed to squeeze the top surface of the sealing soft board, and the bottom surface of the sealing soft board is pressed and fitted against the top surface of the support and limit strips. At this time, the support and limit strips cooperate to squeeze and seal the edges of the sealing soft board, so that the interior of the storage box is sealed and dust-free. When the closed snap-fit cover is later opened, the surface of the sealing soft board is pushed out from the interior of the storage box by the elastic force of the elastic wire, and the pathological sections inside the storage box can be taken and collected. 2. The pathology teaching device of the present invention, when conducting pathology teaching, opens the closed housing and overlaps the closed housing on the top surface of the semicircular arc bar by the swing arm. At this time, the motor rotates the rotating rod, causing the rotating arm on the outer surface of the rotating rod to flip. When the storage boxes at different positions are flipped vertically, the connection between the storage box and the clamping rod and the downward force generated by the gravity of the pathology sections inside the storage box keep the storage box in a falling state, which can greatly prevent the storage box from flipping due to the rotation of the rotating rod, causing the pathology sections inside the storage box to fall out. 3. The pathology teaching device described in the present invention, when the pathological section is stored in the inner liner shell, the closing shell is reclosed on the outer surface of the top of the inner liner shell, so that the interior of the inner liner shell is in a completely closed state. At this time, low-temperature nitrogen is blown to the bottom of the inner liner shell through the low-temperature nitrogen box, so that the interior of the inner liner shell is in a dry state, and the low temperature will maintain the integrity of the pathological section. At the same time, as the low-temperature gas continues to spread and rise, the low-temperature nitrogen on the top layer is recovered by the circulating air duct, so that the interior of the inner liner shell is always kept at a low temperature. In addition, the continuous flow of nitrogen will divert and discharge the residual oxygen inside the inner liner shell, keeping the pathological section in an oxygen-free state, thereby avoiding the pathological section from being corrupted by oxygen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is a perspective view of the present invention; Figure 2 This is a three-dimensional diagram of the storage box of the present invention when it is closed; Figure 3 It is a cutaway perspective view of the storage box of the present invention; Figure 4 This is a perspective view of the unfolded back side of the storage box of the present invention; Figure 5 It is a cutaway perspective view of the inner shell of the present invention; Figure 6 This is an expanded perspective view of the rotating rod in the present invention; Figure 7 is a perspective view of a storage box in the present invention when it is expanded and cut away; Figure 8 It is a sectional perspective view of a storage box in the present invention when closed.

[0018] In the figure: 11, storage box; 111, support rod; 112, semicircular arc bar; 113, swing arm; 114, closed shell; 115, low-temperature nitrogen box; 116, circulating air duct; 12, liner shell; 121, motor; 122, rotating rod; 123, rotating arm; 124, clamping rod; 125, storage box; a1, overlapping platform; a2, overlapping bar; a3, elastic wire; a4, support limit bar; a5, sealing soft board; a6, closed clamping cover; 126, limit groove; 127, limit arm; 13, display table; 131, cutting display slot; 132, fixing plate; 133, limit rod; 134, transparent glass plate; 135, camera; 136, LED playback screen; 137, return air duct; 138, waste liquid collection box. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figures 1 to 8 As shown, a pathology teaching device according to an embodiment of the present invention comprises a storage box 11 and an inner shell 12 detachably mounted on the inner wall of the top of the storage box 11, a display stand 13 fixedly mounted on a side surface of the storage box 11, a motor 121 fixedly mounted on one side surface of the inner shell 12, a rotating rod 122 movably sleeved on the inner wall of the inner shell 12 fixedly connected to the output end of the motor 121, and a rotating arm 12 movably sleeved on the outer surface of the rotating rod 122. 3. A clamping rod 124 is movably sleeved on the outer surface of the rotating arm 123. A limiting groove 126 is defined on the inner wall of the liner casing 12 at its peripheral edges. One end of the rotating arm 123 is fixedly connected to a storage box 125 that is movably sleeved on the inner wall of the limiting groove 126. Storage boxes 125 are movably sleeved on the outer surfaces of both ends of the clamping rod 124. One end of the rotating arm 123 is fixedly connected to a limiting arm 127 that is movably sleeved on the inner wall of the limiting groove 126. The inner wall of the storage box 125 is fixedly connected to a lap platform a1 at the bottom edge, the inner wall of the storage box 125 is fixedly connected to a lap strip a2 at the top edge, the inner wall of the storage box 125 is fixedly connected to a support limit strip a4 on the top surface of the lap strip a2, and the top surface of the lap strip a2 is fixedly connected to an elastic wire a3.

[0021] After the pathological section teaching is completed, the pathological section is placed on the top surface of the overlapping table a1, and the sealing soft board a5 is overlapped on the top surface of the elastic wire a3. At this time, the closed snap-fit cover a6 is closed to squeeze the top surface of the sealing soft board a5, and the bottom surface of the sealing soft board a5 is squeezed and fitted on the top surface of the support and limit strip a4. At this time, the support and limit strip a4 is used to squeeze and seal the edges of the sealing soft board a5, so that the interior of the storage box 125 is sealed and dust-free. When the closed snap-fit cover a6 is opened later, the surface of the sealing soft board a5 will be extended from the interior of the storage box 125 under the elastic push of the elastic wire a3, and the pathological sections inside the storage box 125 can be taken and collected. After the pathological slices are placed in the storage box 125, the clamping ring on the surface of one side of the storage box 125 is sleeved on the outer surfaces of both ends of the clamping rod 124. After the motor 121 rotates the rotating rod 122, the outer surfaces of both ends of the limiting arm 127 are movably sleeved on the inner wall surface of the limiting groove 126. As the motor 121 continuously rotates the rotating rod 122, the lower limiting arm 127 and the rotating arm 123 rotate, and the rotating arm 123 will not flip over on the surface of the rotating rod 122, thereby causing the pathological slices inside the storage box 125 to flip over and cause the slices to leak.

[0022] like Figure 1 - Figure 4 and Figures 6 to 8 As shown, the top of the elastic wire a3 is movably connected to a sealing soft plate a5 that is movably sleeved on the inner wall of the storage box 125, and the top surface of the storage box 125 is swingably connected to a closed snap-fit cover a6 that is movably overlapped on the outer surface of the top of the sealing soft plate a5. A low-temperature nitrogen box 115 is fixedly installed on the edge positions of both sides of the bottom of the storage box 11. The output end of the low-temperature nitrogen box 115 extends to the inner wall of the inner shell 12. A circulating air duct 116 is fixedly connected to the back of the storage box 11. One end of the circulating air duct 116 passes through the receiving end of the storage box 11 and the low-temperature nitrogen box 115. The other end of the circulating air duct 116 passes through the storage box 11 and extends to the inner wall of the liner shell 12. A support rod 111 is fixedly installed on the one side surface of the storage box 11, and one end of the support rod 111 is fixedly connected to a semicircular arc strip 112. A swing arm 113 is fixedly installed on the top side surface of the storage box 11 and on the top surface of the support rod 111. One end of the swing arm 113 is swingably connected to a closed shell 114 that is movably overlapped on the outer surface of the top of the liner shell 12. The outer surface of the closed shell 114 is movably overlapped on the inner wall of the semicircular arc strip 112.

[0023] When conducting pathology teaching, the closed shell 114 is opened and the closed shell 114 is overlapped on the top surface of the semicircular arc bar 112 by the swing arm 113. At this time, the motor 121 is cooperated to rotate the rotating rod 122, so that the rotating arm 123 on the outer surface of the rotating rod 122 is flipped. When the storage boxes 125 at different positions are flipped vertically, the connection between the storage box 125 and the clamping rod 124 and the downward force generated by the gravity of the pathological slices inside the storage box 125 are used to keep the storage box 125 in a falling state, which can greatly prevent the storage box 125 from flipping due to the rotation of the rotating rod 122, causing the pathological slices inside the storage box 125 to fall and flip out. When the pathological section is stored in the inner liner shell 12, the closing shell 114 is reclosed on the outer surface of the top of the inner liner shell 12, so that the interior of the inner liner shell 12 is in a completely closed state. At this time, the low-temperature nitrogen box 115 is used to blow low-temperature nitrogen to the bottom of the inner liner shell 12, so that the interior of the inner liner shell 12 is in a dry state, and the low temperature will maintain the integrity of the pathological section. At the same time, as the low-temperature gas continues to spread and rise, the circulating air duct 116 is used to recover the low-temperature nitrogen on the top layer, so that the interior of the inner liner shell 12 is always kept at a low temperature. In addition, the continuous flow of nitrogen will divert and discharge the residual oxygen in the inner liner shell 12, keeping the pathological section in an oxygen-free state, and avoiding the pathological section from being corrupted by oxygen.

[0024] like Figures 1 to 2 As shown, a cutting display groove 131 is provided on the top surface of the display stand 13 and located at the edge position of one side, a fixing plate 132 is fixedly connected to the top surface of the display stand 13 and located at the edge positions of both sides, a limiting rod 133 is fixedly connected to the outer surface of the fixing plate 132, a transparent glass plate 134 is movably sleeved on the outer surface of the limiting rod 133, a camera 135 is fixedly installed on the inner wall surface of the transparent glass plate 134, an LED playback screen 136 is fixedly installed on the top surface of the display stand 13 and located at the edge position of one side of the limiting rod 133, a waste liquid collection box 138 is fixedly installed on the one side surface of the storage box 11 and located at the bottom edge position of the display stand 13, and a return air pipe 137 provided at the bottom edge position of the cutting display groove 131 is fixedly connected to the receiving end of the waste liquid collection box 138.

[0025] The taken-out slices are placed on the inner wall of the cutting display tank 131. At this time, the transparent glass plate 134 slides on the outer surface of the limit rod 133 to the top surface of the cutting display tank 131. At this time, the camera 135 on the inner wall of the transparent glass plate 134 illuminates and photographs the pathological slices on the top surface of the cutting display tank 131, and the photographed pathological slices are displayed through the LED playback screen 136. The formalin or decayed liquid leaked from the surface of the pathological slices is guided into the inner wall of the waste liquid collection box 138 through the reflux air pipe 137, so that the recovered liquid is recycled.

[0026] Working principle: When conducting pathology teaching, the closed shell 114 is opened and the closed shell 114 is overlapped on the top surface of the semicircular arc bar 112 through the swing arm 113. At this time, the motor 121 is cooperated to rotate the rotating rod 122, so that the rotating arm 123 on the outer surface of the rotating rod 122 is flipped, and the different storage boxes 125 are flipped vertically. Then, through the connection between the storage box 125 and the clamping rod 124, and the downward force generated by the gravity of the pathological slices inside the storage box 125, the storage box 125 is kept in a falling state, which can greatly prevent the storage box 125 from flipping under the rotation of the rotating rod 122, causing the pathological slices inside the storage box 125 to fall and flip out. The taken-out slices are placed on the inner wall of the cutting display tank 131. At this time, the transparent glass plate 134 slides on the outer surface of the limit rod 133 to the top surface of the cutting display tank 131. At this time, the camera 135 on the inner wall of the transparent glass plate 134 illuminates and photographs the pathological slices on the top surface of the cutting display tank 131, and the photographed pathological slices are displayed through the LED playback screen 136. The formalin or decayed liquid leaked from the surface of the pathological slices is guided into the inner wall of the waste liquid collection box 138 through the return air pipe 137, so that the recovered liquid is recycled. After the pathological section teaching is completed, the pathological section is placed on the top surface of the overlapping table a1, and the sealing soft board a5 is overlapped on the top surface of the elastic wire a3. At this time, the closed snap-fit cover a6 is closed to squeeze the top surface of the sealing soft board a5, and the bottom surface of the sealing soft board a5 is squeezed and fitted on the top surface of the support and limit strip a4. At this time, the support and limit strip a4 is used to squeeze and seal the edges of the sealing soft board a5, so that the interior of the storage box 125 is sealed and dust-free. When the closed snap-fit cover a6 is opened later, the surface of the sealing soft board a5 will be extended from the interior of the storage box 125 under the elastic push of the elastic wire a3, and the pathological sections inside the storage box 125 can be taken and collected. After the pathological slices are placed in the storage box 125, the clamping ring on one side surface of the storage box 125 is sleeved on the outer surfaces of both ends of the clamping rod 124. After the motor 121 rotates the rotating rod 122, the outer surfaces of both ends of the limiting arm 127 are movably sleeved on the inner wall surface of the limiting groove 126. As the motor 121 continuously rotates the rotating rod 122, the lower limiting arm 127 and the rotating arm 123 rotate, and the rotating arm 123 will not flip over on the surface of the rotating rod 122, thereby causing the pathological slices inside the storage box 125 to flip over and cause the slices to leak. When the pathological section is stored in the inner liner shell 12, the closing shell 114 is reclosed on the outer surface of the top of the inner liner shell 12, so that the interior of the inner liner shell 12 is in a completely closed state. At this time, the low-temperature nitrogen box 115 is used to blow low-temperature nitrogen to the bottom of the inner liner shell 12, so that the interior of the inner liner shell 12 is in a dry state, and the low temperature will maintain the integrity of the pathological section. At the same time, as the low-temperature gas continues to spread and rise, the circulating air duct 116 is used to recover the low-temperature nitrogen on the top layer, so that the interior of the inner liner shell 12 is always kept at a low temperature. In addition, the continuous flow of nitrogen will divert and discharge the residual oxygen in the inner liner shell 12, keeping the pathological section in an oxygen-free state, and avoiding the pathological section from being corrupted by oxygen.

[0027] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A teaching device for pathology, comprising a storage box (11) and an inner shell (12) detachably mounted on the inner wall surface of the top of the storage box (11), and a display stand (13) fixedly mounted on a side surface of the storage box (11), characterized in that: A motor (121) is fixedly mounted on one side surface of the inner liner casing (12); a rotating rod (122) movably sleeved on the inner wall surface of the inner liner casing (12) is fixedly connected to the output end of the motor (121); a rotating arm (123) is movably sleeved on the outer surface of the rotating rod (122); a clamping rod (124) is movably sleeved on the outer surface of the rotating arm (123); a limiting groove (126) is provided on the inner wall surface of the inner liner casing (12) at the peripheral edge positions; a storage box (125) is fixedly connected to one end of the rotating arm (123) and movably sleeved on the inner wall surface of the limiting groove (126); storage boxes (125) are movably sleeved on the outer surfaces of both ends of the clamping rod (124); and a limiting arm (127) is fixedly connected to one end of the rotating arm (123) and movably sleeved on the inner wall surface of the limiting groove (126); The inner wall surface of the storage box (125) is fixedly connected to a lap platform (a1) at the bottom edge position, the inner wall surface of the storage box (125) is fixedly connected to a lap strip (a2) at the top edge position, the inner wall surface of the storage box (125) is fixedly connected to a support limit strip (a4) at the top surface of the lap strip (a2), and the top surface of the lap strip (a2) is fixedly connected to an elastic thread (a3).

2. A pathology teaching device according to claim 1, characterized in that: A sealing soft plate (a5) movably overlapped on the top of the elastic wire (a3) and movably sleeved on the inner wall of the storage box (125) is movably connected, and a closed snap-fit cover (a6) movably overlapped on the top outer surface of the sealing soft plate (a5) is swingably connected on the top surface of the storage box (125).

3. A pathology teaching device according to claim 1, characterized in that: A low-temperature nitrogen box (115) is fixedly installed on both side edges of the bottom of the storage box (11), and the output end of the low-temperature nitrogen box (115) extends to the inner wall surface of the inner shell (12). A circulating air duct (116) is fixedly connected to the back of the storage box (11).

4. A pathology teaching device according to claim 3, characterized in that: One end of the circulating air duct (116) passes through the storage box (11) and is connected to the receiving end of the low-temperature nitrogen box (115), and the other end of the circulating air duct (116) passes through the storage box (11) and extends to the inner wall surface of the inner shell (12). A support rod (111) is fixedly installed on one side surface of the storage box (11), and a semicircular arc bar (112) is fixedly connected to one end of the support rod (111).

5. The pathology teaching device according to claim 1, characterized in that: A swing arm (113) is fixedly mounted on one side surface of the top of the storage box (11) and located on the top surface of the support rod (111). One end of the swing arm (113) is swingably connected to a closed shell (114) that is movably overlapped on the outer surface of the top of the inner shell (12). The outer surface of the closed shell (114) is movably overlapped on the inner wall of the semicircular arc strip (112).

6. The pathology teaching device according to claim 1, characterized in that: A cutting display groove (131) is provided on the top surface of the display stand (13) and at a side edge position. A fixing plate (132) is fixedly connected to the top surface of the display stand (13) and at both side edge positions. A limiting rod (133) is fixedly connected to the outer surface of the fixing plate (132).

7. The pathology teaching device according to claim 6, characterized in that: A transparent glass plate (134) is movably sleeved on the outer surface of the limiting rod (133), a camera (135) is fixedly mounted on the inner wall of the transparent glass plate (134), and an LED playback screen (136) is fixedly mounted on the top surface of the display stand (13) and at a side edge position of the limiting rod (133).

8. The pathology teaching device according to claim 1, characterized in that: A waste liquid collection box (138) is fixedly mounted on one side surface of the storage box (11) and located at the bottom edge of the display stand (13). A return air pipe (137) disposed at the bottom edge of the cutting display trough (131) is fixedly connected to the receiving end of the waste liquid collection box (138).

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