Negative pressure specimen suction and collection device

Abstract

The utility model provides a negative pressure specimen suction and collection device, which belongs to the technical field of medical instruments, and comprises a suction seat which is arranged on an object to be connected and is provided with an accommodating cavity, a first interface and a second interface which are communicated with one another; the filter is detachably connected into the containing cavity and is not connected with the suction base, the filter comprises a carrier part, a through hole is formed in the carrier part, a filtering part is embedded in the through hole, and the first connector, the filtering part and the second connector form a main channel of the drainage object; one end of the connecting pipe is connected with the first connector through a three-way valve, the other end of the connecting pipe is connected with the second connector through a three-way connector, the three-way valve, the connecting pipe and the three-way connector form an auxiliary channel of drainage objects, and a valve switch is arranged on the three-way valve. According to the utility model, medical staff can replace the filter with one hand, the operation is convenient, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and relates to a collecting device, in particular to a negative pressure specimen suction collecting device. BACKGROUND

[0002] When medical staff uses a negative pressure suction bottle to suck polyps in a patient's body, the suction pipe of the suction bottle is directly connected to the bottle. Under the action of negative pressure, sample tissues such as polyps can directly enter the bottle through the suction pipe. However, when the polyp tissues need to be examined, it is difficult to collect the sucked polyp tissues from the bottle.

[0003] Patent application (CN202110731804.9) discloses a negative pressure suction device for an endoscope and an endoscope system, which comprises a pipeline, a negative pressure suction bottle and a filter 200. The filter 200 is arranged on the main pipeline, and the main pipeline can selectively communicate with the first branch pipeline or the second branch pipeline. This arrangement separates the sample collection path from the normal body fluid collection path, and they do not affect each other. The switching process is simple and feasible, and manual disassembly is not required. Bacteria and impurities can be prevented from entering the pipeline, ensuring a sterile and clean environment during the operation and ensuring the safety of the operation.

[0004] In the above-mentioned endoscope system, although the polyps can be separated by the filter, when the polyps in the filter are taken out, the medical staff needs to disassemble the filter from the pipeline with both hands, and then connect a new filter into the pipeline after taking it out. The operation is relatively troublesome, especially when the patient needs to extract polyps from different organs. Frequent disassembly and replacement of the filter not only is troublesome, but also has the risk of contamination. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned problems existing in the prior art, and provides a negative pressure specimen suction collecting device which can realize one-handed operation, improve the efficiency and convenience of replacing the filter structure, and avoid the risk of contamination of the specimen.

[0006] The utility model can be realized by the following technical scheme: a negative pressure specimen suction collecting device, comprising:

[0007] The suction seat is installed on the to-be-connected object, and a containing cavity is arranged on the suction seat, and the cavity opening of the containing cavity is located on the side wall of the suction seat. The first interface and the second interface are arranged at both ends of the thickness direction of the suction seat, and the first interface and the second interface are both in communication with the containing cavity.

[0008] The filter is detachably connected to the accommodating cavity and is not connected between the suction seat, and the filter comprises a carrier part and is provided with a through hole on the carrier part, wherein a filter part is nested in the through hole, when the filter is horizontally inserted into the accommodating cavity, the filter part is connected with the first interface and the second interface, and the first interface, the filter part and the second interface form a main channel of the drainage object;

[0009] The connecting pipe is connected with the first interface through a three-way valve and is connected with the second interface through a three-way joint, two ports of the three-way valve are respectively connected with the connecting pipe and the first interface, and the other port of the three-way valve serves as an inlet of the drainage object, two ports of the three-way joint are respectively connected with the connecting pipe and the second interface, and the other port of the three-way joint serves as an outlet of the drainage object, wherein the three-way valve, the connecting pipe and the three-way joint form an auxiliary channel of the drainage object, and a valve switch is arranged on the three-way valve, and the valve switch is used to make one of the main channel and the auxiliary channel in a connected state and the other in a blocked state.

[0010] In the negative pressure specimen suction and collection device, the filter further comprises a handle part, the handle part is formed by a side wall of the carrier part extending outward at a certain angle, when the filter is connected into the main channel, one end of the handle part connected with the carrier part is located in the accommodating cavity, and the other end of the handle part as a holding end is located outside the accommodating cavity, wherein the size of the handle part located in the accommodating cavity is smaller than the size of the handle part located outside the accommodating cavity; or when the filter is connected into the main channel, the handle part is entirely located outside the accommodating cavity.

[0011] In the negative pressure specimen suction and collection device, a notch is formed by inwardly recessing a side wall of the suction seat, the notch is connected with the accommodating cavity, and a cavity wall part on a side of the accommodating cavity close to the second interface is exposed below the notch, wherein a sleeve column is arranged on the exposed part of the cavity wall, and an axis direction of the sleeve column is consistent with a drainage direction of the drainage object in the main channel; the filter further comprises a rotating part, the rotating part is formed by a side wall of the carrier part extending outward at a certain angle, and the rotating part is nested with the sleeve column, wherein when the filter is connected into the main channel, one end of the rotating part connected with the carrier part is located in the accommodating cavity, and the other end of the rotating part nested with the sleeve column corresponds to a position of the notch; when the filter is removed from the accommodating cavity, the rotating part is entirely exposed below the notch.

[0012] In the negative pressure specimen suction and collection device, the rotating part and the handle part are respectively located on two sides of the carrier part, when the carrier part is transferred from the accommodating cavity to outside the accommodating cavity, the entire filter is in an exposed state, and the entire filter can be detached from the suction seat by separating the rotating part from the sleeve column.

[0013] In the negative pressure specimen suction and collection device, the accommodating cavity comprises a first cavity wall arranged on the same side of the first interface and a second cavity wall arranged on the same side of the second interface, a first annular groove is arranged on the first cavity wall, a first sealing ring is embedded in the first annular groove, a second annular groove is arranged on the second cavity wall, and a second sealing ring is embedded in the second annular groove, wherein the diameters of the first sealing ring and the second sealing ring are greater than the hole diameter of the through hole and are not greater than the maximum profile diameter of the carrier part, and the first sealing ring protrudes from the first cavity wall and the second sealing ring protrudes from the second cavity wall.

[0014] In the negative pressure specimen suction and collection device, the accommodating cavity comprises a first cavity wall arranged on the same side of the first interface and a second cavity wall arranged on the same side of the second interface, a first connecting boss is arranged on the first cavity wall, a first recess cavity is arranged on the first connecting boss, a first positioning column is formed by extending the bottom of the first recess cavity towards the opening of the first recess cavity, wherein a first annular groove is formed between the outer side wall of the first positioning column and the inner side wall of the first connecting boss, a first sealing ring is fixed in the first annular groove by a first sealing gland, and a part of the first sealing ring protrudes from the cover surface of the first sealing gland; a second connecting boss is arranged on the second cavity wall, a second recess cavity is arranged on the second connecting boss, a second positioning column is formed by extending the bottom of the second recess cavity towards the opening of the second recess cavity, wherein a second annular groove is formed between the outer side wall of the second positioning column and the inner side wall of the second connecting boss, a second sealing ring is fixed in the second annular groove by a second sealing gland, and a part of the second sealing ring protrudes from the cover surface of the second sealing gland.

[0015] In the negative pressure specimen suction and collection device, a third annular groove is arranged on the first sealing gland, the height of the outer side wall of the third annular groove is greater than the height of the inner side wall of the third annular groove, a first clamping groove is arranged on the outer side wall of the third annular groove, the first clamping groove is rotationally clamped with a first clamping block on the outer side wall of the first connecting boss, a first slot hole is arranged on the cover surface of the first sealing gland, and the position of the first slot hole corresponds to the position of the first sealing ring; a fourth annular groove is arranged on the second sealing gland, the height of the outer side wall of the fourth annular groove is greater than the height of the inner side wall of the fourth annular groove, a second clamping groove is arranged on the outer side wall of the fourth annular groove, the second clamping groove is rotationally clamped with a second clamping block on the outer side wall of the second connecting boss, and a second slot hole is arranged on the cover surface of the second sealing gland, and the position of the second slot hole corresponds to the position of the second sealing ring.

[0016] In the aforementioned negative pressure specimen aspiration and collection device, the aspiration seat includes an upper seat plate, a middle seat body, and a lower seat plate, which are arranged from top to bottom along the drainage direction. The receiving cavity is located on the middle seat body, the first cavity wall is located on the upper seat plate, and the second cavity wall is located on the lower seat plate. An installation platform is provided on the side wall of the middle seat body, the position of which corresponds to the position of the notch on the upper seat plate, and the sleeve is connected to the installation platform.

[0017] In the aforementioned negative pressure specimen aspiration and collection device, the aspiration seat is provided with a translational structure that can move along the axial direction of the object to be connected and lock the aspiration seat in the desired position, and the translational structure includes:

[0018] The clamp is rotatably connected to the suction base at one end;

[0019] The pin-hole bolt has a shaft hole at one end and a thread at the other end. The end with the shaft hole is inserted into the suction seat, and the connection between the pin-hole bolt and the suction support is completed by fasteners. The threaded end and the other end of the clamp form an insertion fit.

[0020] The plum blossom handle is screwed onto the threaded end of the pin-hole bolt, and the connection between the clamp and the pin-hole bolt is completed through the plum blossom handle.

[0021] This utility model also provides a negative pressure specimen aspiration and collection device, comprising:

[0022] A suction seat is installed on the object to be connected, and a receiving cavity is provided on the suction seat. The opening of the receiving cavity is located on the side wall of the suction seat. A first interface and a second interface are respectively provided at both ends along the thickness direction of the suction seat, and both the first interface and the second interface are connected to the receiving cavity.

[0023] A filter is located inside a receiving cavity, and the filter includes a carrier portion sandwiched between the upper and lower cavity walls of the receiving cavity and connected to the upper and lower cavity walls of the receiving cavity; a filter portion is connected to the carrier portion in a drawer-type connection, and when the filter portion is inserted into the carrier portion, the filter portion is connected to the first interface and the second interface, and the first interface, the filter portion and the second interface form the main channel for the drainage material.

[0024] The connecting pipe is connected with the first interface through a three-way valve at one end and connected with the second interface through a three-way joint at the other end, two ports of the three-way valve are respectively connected with the connecting pipe and the first interface in communication, the other port of the three-way valve is used as an inlet of the drainage material, two ports of the three-way joint are respectively connected with the connecting pipe and the second interface in communication, and the other port of the three-way joint is used as an outlet of the drainage material, wherein the three-way valve, the connecting pipe and the three-way joint form an auxiliary channel of the drainage material, and a valve switch is arranged on the three-way valve, so that one of the main channel and the auxiliary channel is in a communication state and the other is in a blocking state.

[0025] Compared with the prior art, the utility model has the advantages of:

[0026] (1), the utility model provides a kind of negative pressure specimen suction collection device, so that medical staff can realize the replacement of filter with single hand, it is easy to operate, save time and labour.

[0027] (2), by being provided with handle portion, when medical staff takes filter, the relative distance between the hand of medical staff and filter portion is enlarged, so that further avoid polypus specimen in filter portion is contaminated, same can avoid dirt in filter portion pollute the hand of medical staff.

[0028] (3), by being provided with sleeve column, so that rotation cooperation is formed between filter and containing cavity cavity wall, so that the use of filter is more convenient.

[0029] (4), sealing ring is arranged on the upper and lower two cavity walls of containing cavity, one aspect avoids the formation of unstable air pressure on main channel or "gas leakage" phenomenon when negative pressure suction, another aspect avoids "liquid leakage" phenomenon when drainage liquid, so sealing ring can improve the sealing property of main channel by being provided.

[0030] (5), sealing ring is fixed in annular groove by sealing cover, and part of sealing ring protrudes from the cover surface of sealing cover, so that not only good sealing effect can be realized, but also sealing ring can not be separated from annular groove, and the reliability of sealing ring is improved.

[0031] (6), by being provided with translation structure, entire negative pressure specimen suction collection device can hover in any position of to-be-connected object, improve the convenience of collection device, in addition, the to-be-connected object is generally pipe fitting. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the structure diagram of the utility model one kind negative pressure specimen suction collection device.

[0033] Figure 2 It is the structure diagram of another view of the utility model one kind negative pressure specimen suction collection device.

[0034] Figure 3 is an explosion view of the negative pressure specimen suction and collection device.

[0035] Figure 4 is a structure schematic view of the upper seat plate in a preferred embodiment of the utility model.

[0036] Figure 5 is a structure schematic view of another perspective of the upper seat plate in a preferred embodiment of the utility model.

[0037] Figure 6 is a structure schematic view of the lower seat plate in a preferred embodiment of the utility model.

[0038] Figure 7 is a structure schematic view of another perspective of the lower seat plate in a preferred embodiment of the utility model.

[0039] Figure 8 is a structure schematic view of the first sealing gland in a preferred embodiment of the utility model.

[0040] Figure 9 is a structure schematic view of the second sealing gland in a preferred embodiment of the utility model.

[0041] In the figure, 100, suction seat;110, containing cavity;120, sleeve column;130, upper seat plate;131, first interface;132, first cavity wall;133, first connecting boss;134, first positioning column;135, first annular groove;136, first clamping block;137, notch;140, middle seat body;141, installation platform;150, lower seat plate;151, second interface;152, second cavity wall;153, second connecting boss;154, second positioning column;155, second annular groove;156, second clamping block;160, first sealing ring;170, second sealing ring;180, first sealing gland;181, third annular groove;182, first clamping groove;183, first slot hole;190, second sealing gland;191, fourth annular groove;192, second clamping groove;193, second slot hole;

[0042] 200, filter;210, carrier part;211, through hole;220, filter part;230, handle part;240, rotating part;

[0043] 300, connecting pipe;

[0044] 400, three-way valve;410, inlet;420, valve switch;

[0045] 500, three-way connector;510, outlet;

[0046] 600. Translation structure; 610. Clamp; 620. Pin bolt; 630. Torx handle;

[0047] 700. Item to be connected. Detailed Implementation

[0048] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] like Figures 1 to 9 As shown, the present invention provides a negative pressure specimen aspiration and collection device, comprising:

[0051] A suction seat 100 is installed on the object to be connected 700, and a receiving cavity 110 is provided on the suction seat 100. The opening of the receiving cavity 110 is located on the side wall of the suction seat 100. A first interface 131 and a second interface 151 are respectively provided at both ends along the thickness direction of the suction seat 100, and both the first interface 131 and the second interface 151 are connected to the receiving cavity 110.

[0052] The filter 200 is detachably connected to the receiving cavity 110 and is not connected to the suction seat 100. The filter 200 includes a carrier portion 210 and a through hole 211 is provided on the carrier portion 210. A filter portion 220 is nested in the through hole 211. When the filter 200 is horizontally inserted into the receiving cavity 110, the filter portion 220 is connected to the first interface 131 and the second interface 151. The axis of the filter portion 220 is collinear with the connecting line of the first interface 131 and the second interface 151. The first interface 131, the filter portion 220 and the second interface 151 form the main channel for drainage.

[0053] The connecting pipe 300 is connected with the first interface 131 through the three-way valve 400 at one end, and is connected with the second interface 151 through the three-way joint 500 at the other end, two ports of the three-way valve 400 are respectively connected with the connecting pipe 300 and the first interface 131 in communication, the other port of the three-way valve 400 is used as the inlet 410 of the drainage material, two ports of the three-way joint 500 are respectively connected with the connecting pipe 300 and the second interface 151 in communication, the other port of the three-way joint 500 is used as the outlet 510 of the drainage material, wherein the three-way valve 400, the connecting pipe 300 and the three-way joint 500 form the auxiliary channel of the drainage material, and the valve switch 420 is arranged on the three-way valve 400, so that one of the main channel and the auxiliary channel is in the communication state, and the other is in the blocking state.

[0054] It is worth mentioning that when the valve switch 420 on the three-way valve 400 is in the vertical state, the main channel is in the communication state, and the auxiliary channel is in the blocking state; when the valve switch 420 on the three-way valve 400 is in the horizontal state, the auxiliary channel is in the communication state, and the main channel is in the blocking state.

[0055] In the prior art, the whole filter 200 is connected to the main channel, when the polyp specimen enters the filter 200, although the liquid can be drained into the auxiliary channel, but the user needs to remove the connection between the filter 200 and the main channel pipeline by using both hands, and then the polyp specimen in the filter 200 is taken out, which is relatively troublesome, and if the polyp specimens on multiple organs are needed, the filter 200 needs to be disassembled and assembled constantly, which increases the labor of medical staff.

[0056] In the embodiment, when the polyp specimen enters the filter part 220, the valve switch 420 is turned from the vertical state to the horizontal state, at this time, the medical staff can directly remove the whole filter 200 from the containing cavity 110 by using one hand, which is convenient to operate, and after the polyp specimen is taken out, the filter part 220 in the filter 200 is replaced and is inserted into the containing cavity 110 again, which saves time and labor.

[0057] The negative pressure specimen suction and collection device provided by the utility model enables medical staff to replace the filter 200 by using one hand, which is convenient to operate and saves time and labor.

[0058] It is worth mentioning that the carrier part 210 in the filter 200 can also be clamped between the upper and lower cavity walls of the containing cavity 110 and be connected with the upper and lower cavity walls of the containing cavity 110, and the filter part 220 and the carrier part 210 are connected in a drawer type, when the polyp specimen is in the filter part 220, the filter part 220 is directly taken out from the carrier part 210, and then the updated filter part 220 is inserted into the carrier part 210 again, which is also convenient and reliable to operate.

[0059] In addition, the inlet 410 of the drainage device is connected to the patient through a pipe, and the outlet 510 of the drainage device is connected to a negative pressure aspirator through a pipe.

[0060] Preferably, the filter 200 further comprises a handle portion 230, which is formed by extending the side wall of the carrier portion 210 outward at an angle, and when the filter 200 is connected into the main channel, one end of the handle portion 230 connected to the carrier portion 210 is located in the accommodating cavity 110, and the other end of the handle portion 230 as a holding end is located outside the accommodating cavity 110, wherein the size of the handle portion 230 located in the accommodating cavity 110 is smaller than the size of the handle portion 230 located outside the accommodating cavity 110; or when the filter 200 is connected into the main channel, the handle portion 230 is entirely located outside the accommodating cavity 110.

[0061] It is worth mentioning that the handle portion 230 is formed by extending the side wall of the carrier portion 210 outward in the horizontal direction, and by arranging the handle portion 230, the relative distance between the hand of the medical staff and the filter portion 220 is enlarged when the medical staff takes the filter 200, so as to further avoid the polyp specimen in the filter portion 220 from being contaminated, and the hand of the medical staff from being contaminated by the dirt in the filter portion 220.

[0062] In addition, when the drawer-type connection is formed between the filter portion 220 and the carrier portion 210, the handle portion 230 can be connected to the filter portion 220, and the above-mentioned effects can also be achieved.

[0063] Preferably, a notch 137 is formed by recessing inward along the side wall of the suction seat 100, and the notch 137 is connected to the accommodating cavity 110, and a part of the cavity wall of the accommodating cavity 110 close to the second interface 151 is exposed below the notch 137, wherein a sleeve column 120 is arranged on the exposed part of the cavity wall, and the axis direction of the sleeve column 120 is consistent with the direction of the drainage of the drainage device in the main channel; the filter 200 further comprises a rotating portion 240, which is formed by extending the side wall of the carrier portion 210 outward at an angle, and the rotating portion 240 is nested with the sleeve column 120, wherein when the filter 200 is connected into the main channel, one end of the rotating portion 240 connected to the carrier portion 210 is located in the accommodating cavity 110, and the other end of the rotating portion 240 nested with the sleeve column 120 corresponds to the position of the notch 137; when the filter 200 is removed from the accommodating cavity 110, the rotating portion 240 is entirely exposed below the notch 137.

[0064] In the embodiment, by arranging the sleeve column 120, the rotating cooperation is formed between the filter 200 and the cavity wall of the accommodating cavity 110, so as to make the use of the filter 200 more convenient.

[0065] If only the polyp sample in the filter 200 needs to be taken, the entire filter 200 is directly rotated out of the containing cavity 110, and then the medical staff directly takes the polyp sample from the filtering part 220 by using the forceps. If not only the polyp sample in the filter 200 needs to be taken, but also the filtering part 220 needs to be replaced, at this time, due to the setting of the gap 137, when the carrier part 210 in the filter 200 is moved out of the containing cavity 110, the rotating part 240 is completely exposed in the gap 137. At this time, the medical staff can hold the handle part 230 and move the filter 200 along the axis direction of the sleeve column 120, and through the gap 137, the entire filter 200 is detached from the suction seat 100, and the one-handed operation of the medical staff can also be realized, which saves time and effort.

[0066] It is further pointed out that the rotating part 240 and the handle part 230 are respectively located on both sides of the carrier part 210.

[0067] Preferably, the containing cavity 110 comprises a first cavity wall 132 arranged on the same side as the first interface 131, and a second cavity wall 152 arranged on the same side as the second interface 151. A first annular groove 135 is arranged on the first cavity wall 132, and a first sealing ring 160 is embedded in the first annular groove 135. A second annular groove 155 is arranged on the second cavity wall 152, and a second sealing ring 170 is embedded in the second annular groove 155. The diameter of the first sealing ring 160 and the second sealing ring 170 is greater than the hole diameter of the through hole 211, and is not greater than the maximum profile diameter of the carrier part 210. The first sealing ring 160 protrudes from the first cavity wall 132, and the second sealing ring 170 protrudes from the second cavity wall 152.

[0068] It is worth mentioning that since the filter 200 and the suction seat 100 are a separable structure, and there is no connection between the filter 200 and the suction seat 100, when the main channel is in use, the sealing property of the main channel needs to be considered. Therefore, the sealing rings are arranged on the upper and lower cavity walls of the containing cavity 110. On the one hand, it avoids the formation of unstable air pressure or "air leakage" phenomenon on the main channel when negative pressure suction is performed. On the other hand, it avoids the "liquid leakage" phenomenon when the liquid is drained. Therefore, the sealing property of the main channel can be improved by arranging the sealing rings.

[0069] However, if the sealing ring is directly embedded in the first annular groove 135 or the second annular groove 155, the frequent rotation of the filter 200 can easily scratch the sealing ring out of the annular groove, so that the sealing ring loses its effect.

[0070] Therefore, in order to ensure that the installation of the sealing ring is not affected during the frequent rotation of the filter 200, the installation method of the sealing ring is improved, and the annular sealing ring is changed to a T-shaped sealing ring.

[0071] Further, the first connecting boss 133 is arranged on the first cavity wall 132, and a first recess cavity is arranged on the first connecting boss 133, and a first positioning column 134 is arranged on the cavity bottom of the first recess cavity and extends to the direction of the cavity mouth of the first recess cavity, wherein the outer side wall of the first positioning column 134 and the inner side wall of the first connecting boss 133 form a first annular groove 135, the first sealing ring 160 is fixed in the first annular groove 135 through the first sealing gland 180, and a part of the first sealing ring 160 protrudes from the cover surface of the first sealing gland 180; the second connecting boss 153 is arranged on the second cavity wall 152, and a second recess cavity is arranged on the second connecting boss 153, and a second positioning column 154 is arranged on the cavity bottom of the second recess cavity and extends to the direction of the cavity mouth of the second recess cavity, wherein the outer side wall of the second positioning column 154 and the inner side wall of the second connecting boss 153 form a second annular groove 155, and the second sealing ring 170 is fixed in the second annular groove 155 through the second sealing gland 190, and a part of the second sealing ring 170 protrudes from the cover surface of the second sealing gland 190.

[0072] In the embodiment, the sealing ring is fixed in the annular groove through the sealing gland, and a part of the sealing ring protrudes from the cover surface of the sealing gland, so that good sealing effect can be achieved, and the sealing ring will not be separated from the annular groove, and the reliability of the sealing ring is improved.

[0073] Further, in order to facilitate replacement of the sealing ring, the sealing gland and the connecting boss are detachably connected, and the rotary connection is one of the relatively convenient detachable connections.

[0074] Further, the first connecting boss 133 is arranged on the first cavity wall 132, and a first recess cavity is arranged on the first connecting boss 133, and a first positioning column 134 is arranged on the cavity bottom of the first recess cavity and extends to the direction of the cavity mouth of the first recess cavity, wherein the outer side wall of the first positioning column 134 and the inner side wall of the first connecting boss 133 form a first annular groove 135, the first sealing ring 160 is fixed in the first annular groove 135 through the first sealing gland 180, and a part of the first sealing ring 160 protrudes from the cover surface of the first sealing gland 180; the second connecting boss 153 is arranged on the second cavity wall 152, and a second recess cavity is arranged on the second connecting boss 153, and a second positioning column 154 is arranged on the cavity bottom of the second recess cavity and extends to the direction of the cavity mouth of the second recess cavity, wherein the outer side wall of the second positioning column 154 and the inner side wall of the second connecting boss 153 form a second annular groove 155, the second sealing ring 170 is fixed in the second annular groove 155 through the second sealing gland 190, and a part of the second sealing ring 170 protrudes from the cover surface of the second sealing gland 190.

[0075] It is worth mentioning that the structure of the first sealing gland 180 is the same as that of the second sealing gland 190.

[0076] Preferably, the suction seat 100 comprises an upper seat plate 130, a middle seat body 140 and a lower seat plate 150, and the upper seat plate 130, the middle seat body 140 and the lower seat plate 150 are arranged in sequence along the drainage direction, wherein the accommodation cavity 110 is located on the middle seat body 140, the first cavity wall 132 is arranged on the upper seat plate 130, and the second cavity wall 152 is arranged on the lower seat plate 150, wherein the side wall of the middle seat body 140 is provided with a mounting platform 141, the position of the mounting platform 141 corresponds to the position of the notch 137 on the upper seat plate 130, and the sleeve column 120 is connected to the mounting platform 141, when the carrier part 210 is completely separated from the accommodation cavity 110, the filter 200 can be moved along the axis direction of the sleeve column 120 and removed from the notch 137.

[0077] In the embodiment, the suction seat 100 is divided into the upper seat plate 130, the middle seat body 140 and the lower seat plate 150, and the upper seat plate 130 and the middle seat body 140 are connected by fasteners, and the middle seat body 140 and the lower seat plate 150 are connected by fasteners, and such a split type arrangement facilitates the installation of other components. In addition, in addition to dividing the suction seat 100 into the upper seat plate 130, the middle seat body 140 and the lower seat plate 150, the upper seat plate 130 and the middle seat body 140 can be integrally arranged, or the middle seat body 140 and the lower seat plate 150 can be integrally arranged.

[0078] Preferably, the suction seat 100 is provided with a translation structure 600 which can be moved along the axis direction of the to-be-connected object 700 and lock the suction seat 100 at a desired position, and the translation structure 600 comprises:

[0079] The clasp 610 is rotatably connected to the suction seat 100 at one end;

[0080] The pin hole bolt 620 is provided with a shaft hole at one end and a thread at the other end, the end provided with the shaft hole is inserted into the suction seat 100, and the connection between the pin hole bolt 620 and the suction support is completed by fasteners, and the end provided with the thread is inserted into the other end of the clasp 610 to form a plug-in fit;

[0081] The key handle 630 is screwed to the threaded end of the pin hole bolt 620, and the connection between the clasp 610 and the pin hole bolt 620 is completed through the key handle 630.

[0082] In the embodiment, by providing the translation structure 600, the entire negative pressure specimen suction and collection device can be suspended at any position of the to-be-connected object 700, improving the convenience of use of the collection device, and in addition, the to-be-connected object 700 is generally a pipe.

[0083] It should be noted that the description of "first", "second", "one" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. The terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0084] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0085] The specific embodiments described herein are merely illustrative of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A negative pressure specimen aspiration and collection device, characterized in that, include: A suction seat is installed on the object to be connected, and a receiving cavity is provided on the suction seat. The opening of the receiving cavity is located on the side wall of the suction seat. A first interface and a second interface are respectively provided at both ends along the thickness direction of the suction seat, and both the first interface and the second interface are connected to the receiving cavity. The filter is detachably connected to the receiving cavity and is not connected to the suction seat. The filter includes a carrier part and a through hole is provided on the carrier part. A filter part is nested in the through hole. When the filter is horizontally inserted into the receiving cavity, the filter part is connected to the first interface and the second interface. The first interface, the filter part and the second interface form the main channel for the drainage material. The connecting pipe is connected to the first interface at one end via a three-way valve and to the second interface at the other end via a three-way connector. Two ports on the three-way valve are connected to the connecting pipe and the first interface respectively, and the other port of the three-way valve serves as the inlet of the drainage material. Two ports on the three-way connector are connected to the connecting pipe and the second interface respectively, and the other port of the three-way connector serves as the outlet of the drainage material. The three-way valve, the connecting pipe, and the three-way connector form an auxiliary channel for the drainage material. A valve switch is provided on the three-way valve, which causes one of the main channel and the auxiliary channel to be in a connected state and the other to be in a blocked state.

2. The negative pressure specimen aspiration and collection device according to claim 1, characterized in that, The filter also includes a handle portion, which is formed by extending outward from the side wall of the carrier portion at a certain angle. When the filter is connected to the main channel, the end of the handle portion connected to the carrier portion is located inside the receiving cavity, and the end of the handle portion serving as the hand end is located outside the receiving cavity. The size of the handle portion located inside the receiving cavity is smaller than the size located outside the receiving cavity; or when the filter is connected to the main channel, the entire handle portion is located outside the receiving cavity.

3. The negative pressure specimen aspiration and collection device according to claim 2, characterized in that, A notch is formed by an inward recess along the side wall of the suction seat, and this notch communicates with the receiving cavity, exposing a portion of the cavity wall near the second interface below the notch. A sleeve is provided on the exposed portion of the cavity wall, and the axis of the sleeve is aligned with the drainage direction of the drainage material in the main channel. The filter also includes a rotating part, which is formed by the side wall of the carrier extending outward at a certain angle, and the rotating part and the sleeve form a nested fit. When the filter is connected to the main channel, the end of the rotating part connected to the carrier is located in the receiving cavity, and the end of the rotating part nested with the sleeve corresponds to the position of the notch. When the filter is removed from the receiving cavity, the rotating part is fully exposed below the notch.

4. The negative pressure specimen aspiration and collection device according to claim 3, characterized in that, The rotating part and the handle are located on both sides of the carrier part. When the carrier part is rotated from inside the receiving cavity to outside the receiving cavity, the entire filter is exposed. By separating the rotating part from the sleeve, the entire filter can be removed from the suction seat.

5. The negative pressure specimen aspiration and collection device according to claim 3, characterized in that, The receiving cavity includes a first cavity wall disposed on the same side as the first interface and a second cavity wall disposed on the same side as the second interface. A first annular groove is provided on the first cavity wall, and a first sealing ring is embedded in the first annular groove. A second annular groove is provided on the second cavity wall, and a second sealing ring is embedded in the second annular groove. The diameters of the first sealing ring and the second sealing ring are larger than the diameter of the through hole but not larger than the maximum outline diameter of the carrier portion. The first sealing ring protrudes from the first cavity wall, and the second sealing ring protrudes from the second cavity wall.

6. The negative pressure specimen aspiration and collection device according to claim 3, characterized in that, The receiving cavity includes a first cavity wall disposed on the same side as the first interface and a second cavity wall disposed on the same side as the second interface. A first connecting boss is provided on the first cavity wall, and a first recess is provided on the first connecting boss. A first positioning post is formed by extending from the bottom of the first recess towards the opening of the first recess. A first annular groove is formed between the outer side wall of the first positioning post and the inner side wall of the first connecting boss. A first sealing ring is fixed in the first annular groove by a first sealing cap, and a portion of the first sealing ring protrudes from the cover surface of the first sealing cap. A second connecting boss is provided on the second cavity wall, and a second recess is provided on the second connecting boss. A second positioning post is formed by extending from the bottom of the second recess towards the opening of the second recess. A second annular groove is formed between the outer side wall of the second positioning post and the inner side wall of the second connecting boss. A second sealing ring is fixed in the second annular groove by a second sealing cap, and a portion of the second sealing ring protrudes from the cover surface of the second sealing cap.

7. A negative pressure specimen aspiration and collection device according to claim 6, characterized in that, The first sealing cap has a third annular groove, the height of which is greater than ...

8. A negative pressure specimen aspiration and collection device according to any one of claims 5 to 7, characterized in that, The suction seat includes an upper seat plate, a middle seat body, and a lower seat plate, which are arranged from top to bottom along the drainage direction. The receiving cavity is located on the middle seat body, the first cavity wall is located on the upper seat plate, and the second cavity wall is located on the lower seat plate. The side wall of the middle seat body is provided with an installation platform, the position of which corresponds to the position of the notch on the upper seat plate, and the sleeve is connected to the installation platform.

9. A negative pressure specimen aspiration and collection device according to claim 1, characterized in that, The suction holder is provided with a translational structure that can move along the axis of the object to be connected and lock the suction holder in the desired position, and the translational structure includes: The clamp is rotatably connected to the suction base at one end; The pin-hole bolt has a shaft hole at one end and a thread at the other end. The end with the shaft hole is inserted into the suction seat, and the connection between the pin-hole bolt and the suction support is completed by fasteners. The threaded end and the other end of the clamp form an insertion fit. The plum blossom handle is screwed onto the threaded end of the pin-hole bolt, and the connection between the clamp and the pin-hole bolt is completed through the plum blossom handle.

10. A negative pressure specimen aspiration and collection device, characterized in that, include: A suction seat is installed on the object to be connected, and a receiving cavity is provided on the suction seat. The opening of the receiving cavity is located on the side wall of the suction seat. A first interface and a second interface are respectively provided at both ends along the thickness direction of the suction seat, and both the first interface and the second interface are connected to the receiving cavity. A filter is located inside a receiving cavity, and the filter includes a carrier portion sandwiched between the upper and lower cavity walls of the receiving cavity and connected to the upper and lower cavity walls of the receiving cavity; a filter portion is connected to the carrier portion in a drawer-type connection, and when the filter portion is inserted into the carrier portion, the filter portion is connected to the first interface and the second interface, and the first interface, the filter portion and the second interface form the main channel for the drainage material. The connecting pipe is connected to the first interface at one end via a three-way valve and to the second interface at the other end via a three-way connector. Two ports on the three-way valve are connected to the connecting pipe and the first interface respectively, and the other port of the three-way valve serves as the inlet of the drainage material. Two ports on the three-way connector are connected to the connecting pipe and the second interface respectively, and the other port of the three-way connector serves as the outlet of the drainage material. The three-way valve, the connecting pipe, and the three-way connector form an auxiliary channel for the drainage material. A valve switch is provided on the three-way valve, which causes one of the main channel and the auxiliary channel to be in a connected state and the other to be in a blocked state.

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