Automatic negative pressure specimen suction collector

Abstract

The invention provides an automatic negative pressure specimen suction collector, which belongs to the technical field of medical apparatus and instruments, and comprises a first motor, the output end of the first motor is connected with a turntable structure, and the turntable structure is provided with at least two channels, namely a feeding channel and a transition channel; the output end of the second motor is connected with a material distribution structure, a material storage channel is arranged on the material distribution structure, and no-load filter screen discs are stacked in the material storage channel; the shell is provided with a feeding pipe, a discharging pipe and a blanking port, the feeding pipe is communicated with the discharging pipe to form a drainage channel, a bracket is arranged below the blanking port, and the turntable structure is arranged in the shell. According to the invention, automatic collection of specimens is realized, no contact exists in the whole process, on one hand, the specimens are prevented from being polluted, the accuracy of subsequent experimental data is ensured, and on the other hand, the specimen collection is stable and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices and relates to an automatic negative pressure specimen suction collector. Background Art

[0002] When medical staff use a negative pressure suction bottle to absorb polyps in the patient's body, they pass the suction tube of the suction bottle directly into the bottle body. Under the action of negative pressure, polyps and other sample tissues can pass through the suction tube directly into the bottle body. However, when the polyp tissue needs to be examined, it is very difficult to collect the polyp tissue sucked out from the bottle.

[0003] Patent application CN201921069510.9 discloses a colonoscopic specimen collection device for collecting polyps removed under colonoscopy, comprising a collecting wheel, a bracket, an air inlet connector, an air outlet connector, and a collecting net, wherein the collecting wheel is circumferentially distributed with 4 to 8 specimen collection cavities, and the collecting net is detachably mounted on the specimen collection cavity, and the air inlet connector, the specimen collection cavity, the collecting net, and the air outlet connector are sequentially connected to form an air flow passage; the bracket is hinged to the rotation center of the collecting wheel so that when the collecting wheel rotates around the bracket, the specimen collection cavity and the collecting net in the gas passage are replaced; the air inlet connector is connected to the external interface of the colonoscope, and the air outlet connector is connected to a negative pressure suction tube; through the negative pressure, the polyps cut under the visible colon can be sucked out into the specimen collection cavity and intercepted by the collection net.

[0004] Although the above-mentioned specimen collection device can collect multiple specimens in one operation, the specimens collected in the collection net need to be removed from the specimen collection cavity by medical staff using tweezers or fingers. If tweezers are used, it is easy to cause unstable clamping and drop the specimen. If fingers are used, it is inconvenient to take the specimen because the collection net and the specimen collection cavity are nested and connected. Summary of the invention

[0005] The purpose of the present invention is to address the above problems in the prior art and to provide an automatic negative pressure specimen suction collector which is convenient for specimen collection and will not cause contamination to the specimen.

[0006] The purpose of the present invention can be achieved through the following technical solutions: An automatic negative pressure specimen suction collector, comprising: A first discharging assembly includes a first motor, and an output end of the first motor is connected to a turntable structure, and at least two channels are arranged on the turntable structure, namely a feed channel and a transition channel, wherein a feed direction of the feed channel and a transition direction of the transition channel are both parallel to an output direction of the output end of the first motor; The second discharging assembly includes a second motor, and the output end of the second motor is connected to a material distribution structure, and a material storage channel is provided on the material distribution structure, wherein an empty filter screen disc is stacked in the material storage channel; A shell, and a feed pipe and a discharge pipe are respectively arranged on the upper and lower sides of the shell, and a drop port is arranged on the same side of the discharge pipe, and the feed pipe is connected with the discharge pipe to form a drainage channel, wherein one end of the feed pipe is the feed end of the drainage object, and one end of the discharge pipe is the discharge end of the drainage object, and a bracket is arranged below the drop port, and the turntable structure is built into the shell.

[0007] In the above-mentioned automatic negative pressure specimen suction collector, the number of feed channels and transition channels is two, and the two feed channels and the two transition channels are arranged at intervals, wherein when one of the two feed channels coincides with the storage channel, the other feed channel coincides with the drop port, and one of the two transition channels coincides with the drainage channel, and the other transition channel is arranged opposite to the drainage channel.

[0008] In the above-mentioned automatic negative pressure specimen suction collector, the turntable structure includes: An intermediate disk is provided with two first through grooves and two second through grooves along the axial direction of the intermediate disk, wherein the two first through grooves are arranged opposite to each other, the two second through grooves are arranged opposite to each other, and the two first through grooves and the two second through grooves are arranged at intervals, the diameter of the first through groove is larger than the diameter of the second through groove, and the first through groove is used as a feed channel and the second through groove is used as a transition channel.

[0009] In the above-mentioned automatic negative pressure specimen suction collector, the turntable structure also includes: Two sealing plates are arranged up and down along the axial direction of the intermediate disk, and the intermediate disk is clamped between the two sealing plates, wherein each sealing plate is provided with a first through hole and a second through hole, and the second through hole on the sealing plate located above the intermediate disk is connected to the feed pipe, and the second through hole on the sealing plate located below the intermediate disk is connected to the discharge pipe, and the first through holes on the two sealing plates located on both sides of the intermediate disk are staggered.

[0010] In the above-mentioned automatic negative pressure specimen suction collector, the material distribution structure includes: A material storage barrel, wherein the material storage channel is arranged along the axial direction of the material storage barrel, and a convex ring is arranged on the outer side wall of the material storage barrel, and the convex ring is arranged integrally with the outer side wall of the material storage barrel, wherein blocking parts are arranged on both sides of the convex ring along the axial direction of the material storage barrel, respectively, a first blocking part and a second blocking part, and the first blocking part and the second blocking part can both move horizontally in a direction close to or away from the material storage channel; Two rotating plates, namely the first rotating plate and the second rotating plate, are arranged up and down along the axial direction of the storage barrel, and the convex ring is clamped between the first rotating plate and the second rotating plate, wherein the first rotating plate or the second rotating plate is connected to the output end of the second motor, and the first guiding part and the second guiding part are respectively arranged on the first rotating plate and the second rotating plate, and the first guiding part is plug-fitted with the first blocking part, and the second guiding part is plug-fitted with the second blocking part.

[0011] In the above-mentioned automatic negative pressure specimen suction collector, the first blocking part includes two first blocking blocks arranged opposite to each other, and the first blocking block has a horizontally arranged first supporting part and a vertically arranged first plug-in part, the first supporting part extends into the material storage channel, and the first plug-in part is plug-fitted with the first guide part, and the second blocking part includes two second blocking blocks arranged opposite to each other, and the second blocking block has a horizontally arranged second supporting part and a vertically arranged second plug-in part, the second supporting part extends into the material storage channel, and the second plug-in part is plug-fitted with the second guide part, wherein the connecting line of the two first blocking blocks is vertically arranged to the connecting line of the two second blocking blocks.

[0012] In the above-mentioned automatic negative pressure specimen suction collector, two grooves are arranged on both sides of the convex ring along the axial direction of the storage barrel, which are the first groove and the second groove respectively, and the two first grooves are correspondingly nested with the two first blocking blocks, and the two second grooves are correspondingly nested with the two second blocking blocks, wherein the opening directions of the first groove and the second groove are arranged in opposite directions, and the opening direction of the first groove is toward the first rotating plate, and the opening direction of the second groove is toward the second rotating plate, and the two sides of the first groove along the radial direction of the storage barrel respectively penetrate the inner and outer side walls of the convex ring, and the two sides of the second groove along the radial direction of the storage barrel respectively penetrate the inner and outer side walls of the convex ring.

[0013] In the above-mentioned automatic negative pressure specimen suction collector, the first guide part includes two first arcuate grooves arranged opposite to each other, wherein one end of the first arcuate groove is close to the inner side of the first rotating plate, and the other end is close to the outer side of the first rotating plate, so that the entire first arcuate groove is arranged obliquely, and the first plug-in part is plug-matched with the first arcuate groove; the second guide part includes two second arcuate grooves arranged opposite to each other, wherein one end of the second arcuate groove is close to the inner side of the second rotating plate, and the other end is close to the outer side of the second rotating plate, so that the entire second arcuate groove is arranged obliquely, and the second plug-in part is plug-matched with the second arcuate groove, wherein, when the two first arcuate grooves and the two second arcuate grooves are projected onto the same horizontal plane, the two first arcuate grooves and the two second arcuate grooves are spaced apart from each other and are arranged in a ring shape along the axial direction of the storage barrel.

[0014] In the above-mentioned automatic negative pressure specimen suction collector, a plurality of third arcuate grooves are arranged on the convex ring, and the plurality of third arcuate grooves are arranged in a ring shape along the axial direction of the storage barrel, wherein each third arcuate groove passes through both sides of the convex ring along the axial direction of the storage barrel, and a guide column is nested in each third arcuate groove, the axial direction of the guide column is parallel to the axial direction of the storage barrel, and the two ends of the guide column are respectively connected to the first rotating plate and the second rotating plate by fasteners.

[0015] In the above-mentioned automatic negative pressure specimen suction collector, a material pushing assembly is also included, and the material pushing assembly includes: A motor support plate, two sides of the opening end of the motor support plate are respectively connected to the outer side walls of the shell; The third motor is mounted on the closed end of the motor support plate, and the output end of the third motor extends into the motor support plate, and a push cam is connected to the output end of the third motor, wherein a convex portion is provided on the push cam, and the convex portion extends along the output direction of the output end of the third motor in a convex shape; A push rod, one end of which is connected to a push plate, and the other end of which is provided with a strip-shaped groove that is plugged and matched with the convex part; The sliding structure is located between the push rod and the outer side wall of the shell, and the sliding structure includes a sliding rail and a sliding block, wherein the sliding rail is connected to the outer side wall of the shell, and the sliding block is connected to the push rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides an automatic negative pressure specimen suction collector, which realizes the automatic collection of specimens without any contact. On the one hand, it prevents the specimens from being contaminated and ensures the accuracy of subsequent experimental data. On the other hand, the specimen collection is stable and reliable. (2) By setting two feeding channels and two transition channels, when the empty filter screen in one of the feeding channels is loaded with pathological specimens through one of the transition channels and then discharged from the feeding port, the other feeding channel can just return from the feeding port through the other transition channel to the position overlapping with the storage channel, forming a cycle, thereby ensuring the continuous output of pathological specimens and improving work efficiency; (3) The first motor uses a planetary reduction stepper motor, which can effectively control the rotation angle of the middle plate to avoid misalignment between the feed channel and the storage channel, between the transition channel and the drainage channel, and between the feed channel and the blanking port; the second motor uses a planetary reduction stepper motor, which can effectively control the rotation angle of the two rotating plates to avoid the rotating angle of the rotating plates suddenly being too large and causing shear fracture of the plug-in part on the blocking block, thereby ensuring the reliability of the equipment operation; (4) The pushing assembly can timely push away the filter plate loaded with pathological specimens below the drop port to make room for the next filter plate loaded with pathological specimens, thereby preventing the two filter plates loaded with pathological specimens from colliding and tipping over, causing the pathological specimens in the filter plates to be scattered onto the bracket, causing the pathological specimens to be contaminated and become invalid. In addition, it may also cause confusion between the two pathological specimens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an automatic negative pressure specimen suction collector of the present invention.

[0018] Figure 2 It is a structural schematic diagram of an automatic negative pressure specimen suction collector of the present invention from another perspective.

[0019] Figure 3 It is a partial structural schematic diagram of an automatic negative pressure specimen suction collector of the present invention.

[0020] Figure 4 It is an exploded view of the turntable structure in a preferred embodiment of the present invention.

[0021] Figure 5 It is a structural schematic diagram of a material distribution structure in a preferred embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of the partial structure of the pusher assembly in a preferred embodiment of the present invention.

[0023] Figure 7 yes Figure 6 A schematic diagram of the structure from another perspective is shown.

[0024] In the figure, 100, first discharging assembly; 110, first motor; 120, middle plate; 121, first through slot; 122, second through slot; 123, first meshing tooth; 130, sealing plate; 131, first through hole; 132, second through hole; 140, first gear; 200, second discharging assembly; 210, second motor; 220, storage barrel; 230, convex ring; 231, first groove; 232, second groove; 233, third arc groove; 240, first rotating plate; 241, first arc groove; 250, second rotating plate; 251, second arc groove; 252, second meshing teeth; 260, first blocking block; 261, first supporting portion; 262, first plug-in portion; 270, second blocking block; 271, second supporting portion; 272, second plug-in portion; 280, guide column; 290, second gear; 300, filter screen; 400, housing; 410, feed pipe; 411, feed end; 420, discharge pipe; 421, discharge end; 430, discharge port; 500, bracket; 600, pusher assembly; 610, motor support plate; 620, third motor; 630, pusher cam; 631, convex portion; 640, push rod; 641, strip groove; 650, push plate; 660, slide rail; 670, slider. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] like Figures 1 to 7 As shown, the present invention provides an automatic negative pressure specimen suction collector, comprising: The first discharging assembly 100 includes a first motor 110, and the output end of the first motor 110 is connected to a turntable structure, and at least two channels are arranged on the turntable structure, namely a feed channel and a transition channel, wherein the feed direction of the feed channel and the transition direction of the transition channel are parallel to the output direction of the output end of the first motor 110; The second discharging assembly 200 includes a second motor 210, and the output end of the second motor 210 is connected to a material distribution structure, and a material storage channel is provided on the material distribution structure, wherein an empty filter screen 300 is stacked in the material storage channel; The shell 400 has a feed pipe 410 and a discharge pipe 420 on the upper and lower sides thereof, and a drop port 430 is arranged on the same side as the discharge pipe 420, and the feed pipe 410 is communicated with the discharge pipe 420 to form a drainage channel, wherein one end of the feed pipe 410 is a feed end 411 of the drainage object, and one end of the discharge pipe 420 is a discharge end 421 of the drainage object, and a bracket 500 is arranged below the drop port 430, and the turntable structure is built into the shell 400.

[0028] It is worth mentioning that the feed end 411 on the feed tube 410 is connected to the surgical site in the patient's body through a pipeline, and the discharge end 421 on the discharge tube 420 is connected to the negative pressure suction device through a pipeline.

[0029] The present invention provides an automatic negative pressure specimen suction collector, and its working principle is that in the initial state, the storage channel and the feeding channel overlap and are arranged up and down, and an unloaded filter screen 300 is temporarily stored in the feeding channel, and the drainage channel and the transition channel overlap. When it is necessary to collect pathological specimens in the patient's body, the turntable structure is driven to rotate by the first motor 110, so that the feeding channel and the drainage channel overlap, and the transition channel and the drainage channel are staggered. Under the action of the negative pressure aspirator, the pathological specimens in the patient's body enter the feeding channel through the pipeline through the feeding pipe 410 and fall on the unloaded filter screen 300. After the collection of the pathological specimens is completed, the first motor 110 is used to drive the turntable structure to rotate, so that the feeding channel and the drainage channel overlap, and the transition channel and the drainage channel are staggered. A motor 110 drives the turntable structure again so that the feed channel overlaps with the drop port 430. At this time, the feed channel is used as a discharge channel, and the filter mesh plate 300 loaded with pathological specimens enters the bracket 500 below through the drop port 430. Then the first motor 110 drives the turntable structure again so that the storage channel overlaps with the feed channel again, and the drainage channel overlaps with the transition channel. Finally, the second motor 210 drives the material separation structure to separate the filter mesh plate 300 stacked on the bottom layer in the storage channel from other filter mesh plates 300 and enter the feed channel to form a new unloaded filter mesh plate 300, preparing for the next collection of pathological specimens.

[0030] The invention provides an automatic negative pressure specimen suction collector, which realizes automatic specimen collection without contact throughout the whole process, which prevents specimen contamination and ensures the accuracy of subsequent experimental data, and ensures stable and reliable specimen collection.

[0031] It is further pointed out that the number of feed channels and transition channels is two, and the two feed channels and the two transition channels are arranged at intervals, wherein when one of the two feed channels coincides with the storage channel, the other feed channel coincides with the drop port 430, and one of the two transition channels coincides with the drainage channel, and the other transition channel is arranged opposite to the drainage channel.

[0032] In this embodiment, two feed channels and two transition channels are provided, so that when the empty filter screen 300 in one of the feed channels is loaded with pathological specimens through one of the transition channels and then discharged from the feed port 430, the other feed channel can just return from the feed port 430 through the other transition channel to the position overlapping with the storage channel, forming a cycle, thereby ensuring the continuous output of pathological specimens and improving work efficiency.

[0033] It is worth mentioning that the caliber of the feed channel is larger than the caliber of the transition channel, and the two feed channels are arranged opposite to each other, and the two transition channels are arranged opposite to each other, wherein the angle between any adjacent feed channels and transition channels is 90°. This facilitates the positioning of the feed channel and the transition channel, so that when the first motor 110 drives the turntable structure to rotate, when the two feed channels coincide with the storage channel and the drop port 430 respectively, one of the transition channels coincides with the drainage channel.

[0034] Preferably, the turntable structure comprises: An intermediate disk 120 is provided with two first through grooves 121 and two second through grooves 122 along the axial direction of the intermediate disk 120, wherein the two first through grooves 121 are arranged opposite to each other, the two second through grooves 122 are arranged opposite to each other, and the two first through grooves 121 and the two second through grooves 122 are arranged at intervals, the diameter of the first through groove 121 is larger than the diameter of the second through groove 122, and the first through groove 121 is used as a feed channel, and the second through groove 122 is used as a transition channel.

[0035] It is worth mentioning that in order to improve the sealing effect between the turntable structure and the housing 400, the turntable structure further includes: The two sealing plates 130 are arranged up and down along the axial direction of the intermediate disk 120, and the intermediate disk 120 is clamped between the two sealing plates 130, wherein each sealing plate 130 is provided with a first through hole 131 and a second through hole 132, and the second through hole 132 on the sealing plate 130 located above the intermediate disk 120 is connected to the feed pipe 410, and the second through hole 132 on the sealing plate 130 located below the intermediate disk 120 is connected to the discharge pipe 420, and the first through holes 131 on the two sealing plates 130 located on both sides of the intermediate disk 120 are staggered.

[0036] It is worth mentioning that in the initial state, the first through hole 131 on the sealing plate 130 located above the intermediate disk 120 is coaxially arranged with one of the first through grooves 121 on the intermediate disk 120 to form one of the feed channels, the first through hole 131 on the sealing plate 130 located below the intermediate disk 120 is coaxially arranged with another first through groove 121 to form another feed channel, and the second through hole 132 on the two sealing plates 130 is coaxially arranged with the second through groove 122 to form a transition channel, wherein the number of the first through hole 131 and the second through hole 132 on the sealing plate 130 is one.

[0037] Preferably, the output end of the first motor 110 is connected to the first gear 140, and a first meshing tooth 123 meshing with the first gear 140 is provided on the side of the intermediate disk 120, wherein the first motor 110 can drive the intermediate disk 120 to rotate through the meshing transmission between the first gear 140 and the first meshing tooth 123.

[0038] It is worth mentioning that the first motor 110 can use a planetary reduction stepper motor, which can effectively control the rotation angle of the intermediate disk 120 to avoid misalignment between the feed channel and the storage channel, between the transition channel and the drainage channel, and between the feed channel and the drop port 430. In addition, since the first meshing teeth 123 are arranged on the side of the intermediate disk 120, and the first meshing teeth 123 are integrally arranged with the intermediate disk 120, wherein, since the rotation mode of the intermediate disk 120 is circumferential rotation, it is necessary to cover the first meshing teeth 123 on the side of the entire intermediate disk 120, so that the entire intermediate disk 120 forms a similar gear disk.

[0039] Preferably, the material distribution structure includes: A material storage barrel 220, wherein the material storage channel is arranged along the axial direction of the material storage barrel 220, and a convex ring 230 is arranged on the outer side wall of the material storage barrel 220, wherein the convex ring 230 is arranged integrally with the outer side wall of the material storage barrel 220, wherein blocking parts are respectively arranged on both sides of the convex ring 230 along the axial direction of the material storage barrel 220, namely a first blocking part and a second blocking part, and the first blocking part and the second blocking part can both move horizontally in a direction close to or away from the material storage channel; Two rotating plates, namely the first rotating plate 240 and the second rotating plate 250, are arranged up and down along the axial direction of the storage barrel 220, and the convex ring 230 is clamped between the first rotating plate 240 and the second rotating plate 250, wherein the first rotating plate 240 or the second rotating plate 250 is connected to the output end of the second motor 210, and the first guiding part and the second guiding part are respectively arranged on the first rotating plate 240 and the second rotating plate 250, and the first guiding part is plug-fitted with the first blocking part, and the second guiding part is plug-fitted with the second blocking part.

[0040] It is worth mentioning that the rotating plate directly connected to the output end of the second motor 210 is the active rotating plate, and the rotating plate indirectly connected to the output end of the second motor 210 is the driven rotating plate, wherein the second motor 210 can drive the active rotating plate and the driven rotating plate to rotate synchronously.

[0041] When the second motor 210 drives the first rotating plate 240 and the second rotating plate 250 to rotate synchronously, the first blocking portion moves in a direction close to the material storage channel under the guidance of the first guide portion, and the second blocking portion moves in a direction away from the material storage channel under the guidance of the second guide portion, so that the bottom filter mesh disc 300 in the stacked filter mesh discs 300 in the material storage channel loses support and falls into the feed channel as an unloaded filter mesh disc 300, and the remaining filter mesh discs 300 will not fall synchronously due to the blocking of the first blocking portion; when the second motor 210 is reversed, the first blocking portion moves in a direction away from the material storage channel under the guidance of the first guide portion, and the second blocking portion moves in a direction close to the material storage channel under the guidance of the second guide portion, so that the original remaining stacked filter mesh discs 300 fall as a whole, and the bottom filter mesh disc 300 in the remaining filter mesh discs 300 is placed on the second blocking portion, that is, the second blocking portion serves as a support for the remaining filter mesh discs 300 to prepare for the next output of the filter mesh discs 300.

[0042] Further preferably, the first blocking portion includes two oppositely arranged first blocking blocks 260, and the first blocking block 260 has a horizontally arranged first supporting portion 261 and a vertically arranged first plug-in portion 262, the first supporting portion 261 extends into the material storage channel, and the first plug-in portion 262 is plug-fitted with the first guide portion, and the second blocking portion includes two oppositely arranged second blocking blocks 270, and the second blocking block 270 has a horizontally arranged second supporting portion 271 and a vertically arranged second plug-in portion 272, the second supporting portion 271 extends into the material storage channel, and the second plug-in portion 272 is plug-fitted with the second guide portion, wherein the connecting line of the two first blocking blocks 260 and the connecting line of the two second blocking blocks 270 are vertically arranged.

[0043] It is worth mentioning that two grooves are respectively arranged on both sides of the convex ring 230 along the axial direction of the storage barrel 220, which are the first groove 231 and the second groove 232, and the two first grooves 231 are correspondingly nested with the two first blocking blocks 260, and the two second grooves 232 are correspondingly nested with the two second blocking blocks 270, wherein the opening directions of the first groove 231 and the second groove 232 are arranged in opposite directions, and the opening direction of the first groove 231 is toward the first rotating plate 240, and the opening direction of the second groove 232 is toward the second rotating plate 250, and the first groove 231 on both sides along the radial direction of the storage barrel 220 respectively penetrates the inner and outer side walls of the convex ring 230, and the second groove 232 on both sides along the radial direction of the storage barrel 220 respectively penetrates the inner and outer side walls of the convex ring 230.

[0044] Further preferably, the first guide portion includes two oppositely arranged first arcuate grooves 241, wherein one end of the first arcuate groove 241 is close to the inner side of the first rotating plate 240, and the other end is close to the outer side of the first rotating plate 240, so that the entire first arcuate groove 241 is arranged obliquely, and the first plug-in portion 262 is plugged into and matched with the first arcuate groove 241; the second guide portion includes two oppositely arranged second arcuate grooves 251, wherein one end of the second arcuate groove 251 is close to the inner side of the second rotating plate 250, and the other end is close to the outer side of the second rotating plate 250, so that the entire second arcuate groove 251 is arranged obliquely, and the second plug-in portion 272 is plugged into and matched with the second arcuate groove 251, wherein, when the two first arcuate grooves 241 and the two second arcuate grooves 251 are projected onto the same horizontal plane, the two first arcuate grooves 241 and the two second arcuate grooves 251 are arranged at intervals and are arranged in a ring shape along the axial direction of the storage barrel 220.

[0045] It is worth mentioning that when the second motor 210 drives the two rotating plates to rotate synchronously, the first plug-in portions 262 of the two first blocking blocks 260 move from the outer side close to the first rotating plate 240 to the inner side close to the first rotating plate 240, that is, the first blocking block 260 moves in a direction close to the material storage channel, and at this time, the second plug-in portions 272 of the two second blocking blocks 270 move from the inner side close to the second rotating plate 250 to the outer side close to the second rotating plate 250, that is, the second blocking block 270 moves in a direction away from the material storage channel. movement; on the contrary, when the second motor 210 drives the two rotating plates to reverse synchronously, the first plug-in portion 262 of the two first blocking blocks 260 moves from the inner side close to the first rotating plate 240 to the inner side close to the first rotating plate 240, that is, the first blocking block 260 moves in a direction away from the material storage channel, and the second plug-in portion 272 of the two second blocking blocks 270 moves from the inner side close to the second rotating plate 250 to the outer side close to the second rotating plate 250, that is, the second blocking block 270 moves in a direction close to the material storage channel.

[0046] Preferably, a plurality of third arcuate grooves 233 are provided on the convex ring 230, and the plurality of third arcuate grooves 233 are arranged in a ring shape along the axial direction of the material storage barrel 220, wherein each third arcuate groove 233 passes through both sides of the convex ring 230 along the axial direction of the material storage barrel 220, and a guide column 280 is nested in each third arcuate groove 233, the axial direction of the guide column 280 is parallel to the axial direction of the material storage barrel 220, and the two ends of the guide column 280 are respectively connected to the first rotating plate 240 and the second rotating plate 250 by fasteners.

[0047] It is further pointed out that the output end of the second motor 210 is connected to the second gear 290, and a second meshing tooth 252 meshing with the second gear 290 is provided on the outer wall of the first rotating plate 240 or the outer wall of the second rotating plate 250, wherein the second motor 210 can drive the two rotating plates to rotate synchronously through the meshing transmission between the second gear 290 and the second meshing tooth 252.

[0048] It is worth mentioning that since the first plug-in portion 262 is plug-fitted with the first arc-shaped groove 241, and the second plug-in portion 272 is plug-fitted with the second arc-shaped groove 251, and the arc lengths of the first arc-shaped groove 241 and the second arc-shaped groove 251 are certain, the rotation stroke of the first rotating plate 240 and the second rotating plate 250 is limited, so the second meshing tooth 252 only needs to cover a part of the outer wall of the first rotating plate 240 or the outer wall of the second rotating plate 250.

[0049] Similarly, the second motor 210 can also use a planetary reduction stepper motor, which can effectively control the rotation angle of the two rotating plates to prevent the rotating plates from rotating too much and shearing the plug-in part on the blocking block, thereby ensuring the reliability of the equipment operation.

[0050] In addition, considering the positional relationship between the first rotating plate 240 and the second rotating plate 250 , the second meshing teeth 252 are generally disposed on the outer wall of the second rotating plate 250 , so that the height of the second gear 290 can be reduced.

[0051] Preferably, the automatic negative pressure specimen suction collector also includes a pushing assembly 600, which can promptly push away the filter mesh plate 300 loaded with pathological specimens below the drop port 430 to make room for the next filter mesh plate 300 loaded with pathological specimens, thereby preventing the front and rear filter mesh plates 300 loaded with pathological specimens from colliding and overturning, causing the pathological specimens in the filter mesh plates 300 to be scattered onto the bracket 500, causing the pathological specimens to be contaminated and invalidated. In addition, it will also cause confusion between the front and rear pathological specimens.

[0052] Further preferably, the pusher assembly 600 includes: The motor support plate 610 is U-shaped, and both sides of the open end of the motor support plate 610 are respectively connected to the outer side walls of the housing 400; The third motor 620 is mounted on the closed end of the motor support plate 610, and the output end of the third motor 620 extends into the motor support plate 610, and a push cam 630 is connected to the output end of the third motor 620, wherein a convex portion 631 is provided on the push cam 630, and the convex portion 631 extends along the output direction of the output end of the third motor 620 and is arranged in a convex shape; A push rod 640, one end of which is connected to a push plate 650, and the other end of which is provided with a strip-shaped groove 641 that is plugged and matched with the protrusion 631; The sliding structure is located between the push rod 640 and the outer wall of the shell 400 , and the sliding structure includes a slide rail 660 and a slider 670 , wherein the slide rail 660 is connected to the outer wall of the shell 400 , and the slider 670 is connected to the push rod 640 .

[0053] It is worth mentioning that the third motor 620 drives the pushing cam 630 to rotate. Since the protrusion 631 on the pushing cam 630 is inserted into the bar groove 641, the protrusion 631 can move in the bar groove 641, thereby converting the rotational motion of the pushing cam 630 into the linear motion of the push rod 640. Since the push plate 650 is connected to the push rod 640, the linear motion of the push plate 650 is realized through the push rod 640, thereby pushing the filter screen 300 below the drop port 430 away.

[0054] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0055] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An automatic negative pressure specimen suction collector, characterized in that: include: A first discharging assembly includes a first motor, and an output end of the first motor is connected to a turntable structure, and at least two channels are arranged on the turntable structure, namely a feed channel and a transition channel, wherein a feed direction of the feed channel and a transition direction of the transition channel are both parallel to an output direction of the output end of the first motor; The second discharging assembly includes a second motor, and the output end of the second motor is connected to a material distribution structure, and a material storage channel is provided on the material distribution structure, wherein an empty filter screen disc is stacked in the material storage channel; A shell, and a feed pipe and a discharge pipe are respectively arranged on the upper and lower sides of the shell, and a drop port is arranged on the same side of the discharge pipe, and the feed pipe is connected with the discharge pipe to form a drainage channel, wherein one end of the feed pipe is the feed end of the drainage object, and one end of the discharge pipe is the discharge end of the drainage object, and a bracket is arranged below the drop port, and the turntable structure is built into the shell.

2. The automatic negative pressure specimen suction collector according to claim 1, characterized in that: The number of feed channels and transition channels is two each, and the two feed channels and the two transition channels are arranged at intervals, wherein when one of the two feed channels coincides with the storage channel, the other feed channel coincides with the material drop port, and one of the two transition channels coincides with the drainage channel, and the other transition channel is arranged opposite to the drainage channel.

3. The automatic negative pressure specimen suction collector according to claim 1, characterized in that: The turntable structure includes: An intermediate disk is provided with two first through grooves and two second through grooves along the axial direction of the intermediate disk, wherein the two first through grooves are arranged opposite to each other, the two second through grooves are arranged opposite to each other, and the two first through grooves and the two second through grooves are arranged at intervals, the diameter of the first through groove is larger than the diameter of the second through groove, and the first through groove is used as a feed channel and the second through groove is used as a transition channel.

4. The automatic negative pressure specimen suction collector according to claim 3, characterized in that: The turntable structure also includes: Two sealing plates are arranged up and down along the axial direction of the intermediate disk, and the intermediate disk is clamped between the two sealing plates, wherein each sealing plate is provided with a first through hole and a second through hole, and the second through hole on the sealing plate located above the intermediate disk is connected to the feed pipe, and the second through hole on the sealing plate located below the intermediate disk is connected to the discharge pipe, and the first through holes on the two sealing plates located on both sides of the intermediate disk are staggered.

5. An automatic negative pressure specimen suction collector according to any one of claims 1 to 4, characterized in that: The material distribution structure includes: A material storage barrel, wherein the material storage channel is arranged along the axial direction of the material storage barrel, and a convex ring is arranged on the outer side wall of the material storage barrel, and the convex ring is arranged integrally with the outer side wall of the material storage barrel, wherein blocking parts are arranged on both sides of the convex ring along the axial direction of the material storage barrel, respectively, a first blocking part and a second blocking part, and the first blocking part and the second blocking part can both move horizontally in a direction close to or away from the material storage channel; Two rotating plates, namely the first rotating plate and the second rotating plate, are arranged up and down along the axial direction of the storage barrel, and the convex ring is clamped between the first rotating plate and the second rotating plate, wherein the first rotating plate or the second rotating plate is connected to the output end of the second motor, and the first guiding part and the second guiding part are respectively arranged on the first rotating plate and the second rotating plate, and the first guiding part is plug-fitted with the first blocking part, and the second guiding part is plug-fitted with the second blocking part.

6. The automatic negative pressure specimen suction collector according to claim 5, characterized in that: The first blocking portion includes two first blocking blocks arranged opposite to each other, and the first blocking block has a horizontally arranged first supporting portion and a vertically arranged first plug-in portion, the first supporting portion extends into the material storage channel, and the first plug-in portion is plug-fitted with the first guide portion, and the second blocking portion includes two second blocking blocks arranged opposite to each other, and the second blocking block has a horizontally arranged second supporting portion and a vertically arranged second plug-in portion, the second supporting portion extends into the material storage channel, and the second plug-in portion is plug-fitted with the second guide portion, wherein the connecting line of the two first blocking blocks is vertically arranged to the connecting line of the two second blocking blocks.

7. The automatic negative pressure specimen suction collector according to claim 6, characterized in that: Two grooves are arranged on both sides of the convex ring along the axial direction of the storage barrel, which are the first groove and the second groove respectively, and the two first grooves are correspondingly nested with the two first blocking blocks, and the two second grooves are correspondingly nested with the two second blocking blocks, wherein the opening directions of the first groove and the second groove are arranged in opposite directions, and the opening direction of the first groove is toward the first rotating plate, and the opening direction of the second groove is toward the second rotating plate, and the two sides of the first groove along the radial direction of the storage barrel respectively penetrate the inner and outer side walls of the convex ring, and the two sides of the second groove along the radial direction of the storage barrel respectively penetrate the inner and outer side walls of the convex ring.

8. The automatic negative pressure specimen suction collector according to claim 5, characterized in that: The first guide portion includes two first arc-shaped grooves that are relatively arranged, wherein one end of the first arc-shaped groove is close to the inner side of the first rotating plate, and the other end is close to the outer side of the first rotating plate, so that the entire first arc-shaped groove is arranged obliquely, and the first plug-in portion is plug-matched with the first arc-shaped groove; the second guide portion includes two second arc-shaped grooves that are relatively arranged, wherein one end of the second arc-shaped groove is close to the inner side of the second rotating plate, and the other end is close to the outer side of the second rotating plate, so that the entire second arc-shaped groove is arranged obliquely, and the second plug-in portion is plug-matched with the second arc-shaped groove, wherein, when the two first arc-shaped grooves and the two second arc-shaped grooves are projected onto the same horizontal plane, the two first arc-shaped grooves and the two second arc-shaped grooves are spaced apart from each other and are arranged in a ring shape along the axial direction of the storage barrel.

9. The automatic negative pressure specimen suction collector according to claim 5, characterized in that: A plurality of third arc-shaped grooves are arranged on the convex ring, and the plurality of third arc-shaped grooves are arranged in a ring shape along the axial direction of the material storage barrel, wherein each third arc-shaped groove passes through both sides of the convex ring along the axial direction of the material storage barrel, and a guide column is nested in each third arc-shaped groove, the axial direction of the guide column is parallel to the axial direction of the material storage barrel, and the two ends of the guide column are respectively connected to the first rotating plate and the second rotating plate by fasteners.

10. The automatic negative pressure specimen suction collector according to claim 1, characterized in that: Also included is a pusher assembly, and the pusher assembly includes: A motor support plate, two sides of the opening end of the motor support plate are respectively connected to the outer side walls of the shell; The third motor is mounted on the closed end of the motor support plate, and the output end of the third motor extends into the motor support plate, and a push cam is connected to the output end of the third motor, wherein a convex portion is provided on the push cam, and the convex portion extends along the output direction of the output end of the third motor in a convex shape; A push rod, one end of which is connected to a push plate, and the other end of which is provided with a strip-shaped groove that is plugged and matched with the convex part; The sliding structure is located between the push rod and the outer side wall of the shell, and the sliding structure includes a sliding rail and a sliding block, wherein the sliding rail is connected to the outer side wall of the shell, and the sliding block is connected to the push rod.

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