Negative pressure specimen suction and collection device

Abstract

The invention provides a negative pressure specimen suction and collection device, which belongs to the technical field of medical apparatus and instruments, and comprises a suction seat which is installed on an object to be connected and is provided with a containing 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. Medical staff can replace the filter with one hand, operation is convenient, and time and labor are saved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices and relates to a collecting device, in particular to a negative pressure specimen suction collecting device. 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 (CN202110731804.9) discloses a negative pressure suction device and endoscope system for endoscope, including a pipeline, a negative pressure suction bottle and a filter 200. A filter 200 is provided on the main pipeline, and the main pipeline can be selectively connected to the first branch pipeline or the second branch pipeline. This setting separates the passage for collecting samples from the passage for collecting body fluids normally, and does not affect each other. The switching process is simple and feasible, and no manual disassembly and assembly are required, which can avoid bacteria and other impurities from being introduced into the pipeline, ensuring a sterile and clean environment during the operation and ensuring the safety of the operation.

[0004] In the above-mentioned endoscopic system, although polyps can be separated by filters, when taking out the polyps in the filter, medical staff need to remove the filter from the pipeline with both hands, and then reconnect the new filter to the pipeline after taking it out. The operation is rather troublesome, especially when the patient needs to extract polyps from different organs. Multiple disassembly and replacement of filters is not only troublesome, but also has the risk of contamination. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a negative pressure specimen suction and collection device that can be operated with one hand, improves the efficiency and convenience of replacing the filter structure, and avoids the risk of specimen contamination.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A negative pressure specimen suction collection device, comprising:

[0007] A suction seat is installed on the object to be connected, and a receiving cavity is provided on the suction seat, and the cavity opening of the receiving cavity is located on the side wall of the suction seat, wherein a first interface and a second interface are respectively provided at both ends along the thickness direction of the suction seat, and the first interface and the second interface are both connected to the receiving cavity;

[0008] The filter is detachably connected to the accommodating cavity and is not connected to the suction seat. The filter includes a carrier portion, and a through hole is provided on the carrier portion, wherein a filter portion is nested in the through hole. When the filter is horizontally inserted into the accommodating cavity, 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 a main channel for drainage;

[0009] A connecting pipe, one end of which is connected to the first interface through a three-way valve, and the other end of which is connected to the second interface through a three-way joint, and two of the 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 an inlet for drainage, and two of the ports of the three-way joint are connected to the connecting pipe and the second interface respectively, and the other end port of the three-way joint serves as an outlet for drainage, wherein the three-way valve, the connecting pipe and the three-way joint form an auxiliary channel for drainage, and a valve switch is provided on the three-way valve, and the valve switch is used to cause one of the main channel and the auxiliary channel to be in a connected state and the other to be in a blocked state.

[0010] In the above-mentioned negative pressure specimen suction collection device, the filter also includes a handle portion, which is formed by the side wall of the carrier portion extending outward 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 in the accommodating cavity, and the end of the handle portion serving as the handle end is located outside the accommodating cavity, wherein the dimension of the handle portion located in the accommodating cavity is smaller than the dimension located outside the accommodating cavity; or when the filter is connected to the main channel, the entire handle portion is located outside the accommodating cavity.

[0011] In the above-mentioned negative pressure specimen suction collection device, a notch is formed by an inward depression along the side wall of the suction seat, and the notch is connected to the accommodating chamber, and the cavity wall portion of the accommodating chamber close to the second interface is exposed below the notch, wherein a sleeve is arranged on the exposed portion of the cavity wall, and the axial direction of the sleeve is consistent with the drainage direction of the drainage object in the main channel; the filter also includes a rotating part, which is formed by the side wall of the carrier part extending outward at a certain angle, and the rotating part and the sleeve form a nested fit, wherein when the filter is connected to the main channel, the end of the rotating part connected to the carrier part is located in the accommodating chamber, and the end of the rotating part that is nested with the sleeve corresponds to the position of the notch; when the filter is moved out of the accommodating chamber, the rotating part is completely exposed below the notch.

[0012] In the above-mentioned negative pressure specimen suction collection device, the rotating part and the handle part are respectively located on both sides of the carrier part. When the carrier part is rotated from inside the accommodating cavity to outside the accommodating cavity, the entire filter is in an exposed state. By separating the rotating part and the sleeve, the entire filter can be removed from the suction seat.

[0013] In the above-mentioned negative pressure specimen suction collection device, the accommodating chamber includes a first chamber wall arranged on the same side as the first interface, and a second chamber wall arranged on the same side as the second interface, and a first annular groove is arranged on the first chamber wall, and a first sealing ring is embedded in the first annular groove, and a second annular groove is arranged on the second chamber 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 larger than the aperture of the through hole and not larger than the maximum contour diameter of the carrier part, and the first sealing ring protrudes from the first chamber wall, and the second sealing ring protrudes from the second chamber wall.

[0014] In the above-mentioned negative pressure specimen suction and collection device, the accommodating cavity includes a first cavity wall arranged on the same side as the first interface, and a second cavity wall arranged on the same side as the second interface, a first connecting boss is arranged on the first cavity wall, and a first concave cavity is arranged on the first connecting boss, and a first positioning column is extended from the cavity bottom of the first concave cavity toward the cavity opening of the first concave cavity, wherein a first annular groove is formed between the outer wall of the first positioning column and the inner wall of the first connecting boss, and the first sealing ring is fixed in the first annular groove by the first sealing pressure cover, and a part of the first sealing ring protrudes from the cover surface of the first sealing pressure cover; a second connecting boss is arranged on the second cavity wall, and a second concave cavity is arranged on the second connecting boss, and a second positioning column is extended from the cavity bottom of the second concave cavity toward the cavity opening of the second concave cavity, wherein a second annular groove is formed between the outer wall of the second positioning column and the inner wall of the second connecting boss, and the second sealing ring is fixed in the second annular groove by the second sealing pressure cover, and a part of the second sealing ring protrudes from the cover surface of the second sealing pressure cover.

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

[0016] In the above-mentioned negative pressure specimen suction collection device, the suction seat includes an upper seat plate, a middle seat body and a lower seat plate, and the upper seat plate, the middle seat body and the lower seat plate are distributed from top to bottom along the drainage direction, wherein the accommodating cavity is located on the middle seat body, the first cavity wall is arranged on the upper seat plate, and the second cavity wall is arranged on the lower seat plate, wherein an installation platform is arranged on the side wall of the middle seat body, the position of the installation platform corresponds to the position of the notch on the upper seat plate, and the sleeve column is connected to the installation platform.

[0017] In the above-mentioned negative pressure specimen suction collection device, a translation structure is provided on the suction seat, which can move along the axial direction of the object to be connected and lock the suction seat at a desired position, and the translation structure includes:

[0018] A clamp buckle, one end of which is rotatably connected to the suction seat;

[0019] A pin hole bolt is provided with an axial hole at one end and a thread at the other end, and the end provided with the axial hole is inserted into the suction seat, and the connection between the pin hole bolt and the suction support is completed by a fastener, and the end provided with the thread forms a plug-in fit with the other end of the clamp buckle;

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

[0021] The present invention also provides a negative pressure specimen suction 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, and the cavity opening of the receiving cavity is located on the side wall of the suction seat, wherein a first interface and a second interface are respectively provided at both ends along the thickness direction of the suction seat, and the first interface and the second interface are both connected to the receiving cavity;

[0023] The filter is located in the accommodating cavity, and the filter includes a carrier part, the carrier part is clamped between the upper and lower cavity walls of the accommodating cavity, and is connected to the upper and lower cavity walls of the accommodating cavity; the filter part forms a drawer-type connection with the carrier part, when the filter part is inserted into the carrier part, 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 for drainage;

[0024] A connecting pipe, one end of which is connected to the first interface through a three-way valve, and the other end of which is connected to the second interface through a three-way joint, and two of the 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 an inlet for drainage, and two of the ports of the three-way joint are connected to the connecting pipe and the second interface respectively, and the other end port of the three-way joint serves as an outlet for drainage, wherein the three-way valve, the connecting pipe and the three-way joint form an auxiliary channel for drainage, and a valve switch is provided on the three-way valve, and the valve switch is used to cause one of the main channel and the auxiliary channel to be in a connected state and the other to be in a blocked state.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The negative pressure specimen suction collection device provided by the present invention enables medical staff to replace the filter with one hand, which is easy to operate and saves time and effort.

[0027] (2) By providing the handle, the relative distance between the medical staff's hand and the filter portion is increased when the medical staff takes the filter, thereby further preventing the polyp specimen in the filter portion from being contaminated, and also preventing the dirt in the filter portion from contaminating the medical staff's hand.

[0028] (3) By providing a sleeve column, a rotational fit is formed between the filter and the wall of the accommodating chamber, thereby making the use of the filter more convenient.

[0029] (4) Sealing rings are arranged on the upper and lower walls of the accommodating cavity. On the one hand, this can prevent unstable air pressure or "leakage" in the main channel during negative pressure suction, and on the other hand, it can prevent "liquid leakage" during drainage. Therefore, the sealing performance of the main channel can be improved by arranging the sealing rings.

[0030] (5) The sealing ring is fixed in the annular groove by the sealing cover, and a part of the sealing ring protrudes from the cover surface of the sealing cover. This not only achieves a good sealing effect, but also prevents the sealing ring from being separated from the annular groove, thereby improving the reliability of the use of the sealing ring.

[0031] (6) By setting a translation structure, the entire negative pressure specimen suction collection device can be suspended at any position of the object to be connected, thereby improving the convenience of using the collection device. In addition, the object to be connected is generally a pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a negative pressure specimen suction and collection device of the present invention.

[0033] Figure 2 It is a structural schematic diagram of a negative pressure specimen suction and collection device of the present invention from another perspective.

[0034] Figure 3 It is an exploded view of a negative pressure specimen suction and collection device of the present invention.

[0035] Figure 4 It is a structural schematic diagram of an upper seat plate in a preferred embodiment of the present invention.

[0036] Figure 5 It is a structural schematic diagram of the upper seat plate from another perspective in a preferred embodiment of the present invention.

[0037] Figure 6 It is a structural schematic diagram of the lower seat plate in a preferred embodiment of the present invention.

[0038] Figure 7 It is a structural schematic diagram of the lower seat plate from another perspective in a preferred embodiment of the present invention.

[0039] Figure 8 It is a schematic structural diagram of the first sealing gland in a preferred embodiment of the present invention.

[0040] Fig. 9 It is a schematic structural diagram of the second sealing gland in a preferred embodiment of the present invention.

[0041] In the figure, 100, suction seat; 110, accommodating 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, mounting 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; 190, second sealing gland; 191, fourth annular groove; 192, second clamping groove; 193, second slot;

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

[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 buckle; 620, pin hole bolt; 630, plum blossom handle;

[0047] 700. Objects to be connected. DETAILED DESCRIPTION

[0048] 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.

[0049] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) 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.

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

[0051] The suction seat 100 is installed on the object to be connected 700, and a receiving cavity 110 is provided on the suction seat 100, and the cavity opening of the receiving cavity 110 is located on the side wall of the suction seat 100, wherein 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 the first interface 131 and the second interface 151 are both connected to the receiving cavity 110;

[0052] The filter 200 is detachably connected to the accommodating 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, wherein a filter portion 220 is nested in the through hole 211. When the filter 200 is horizontally inserted into the accommodating cavity 110, the filter portion 220 is connected to the first interface 131 and the second interface 151, and the axis of the filter portion 220 is colinearly arranged with the connection line of the first interface 131 and the second interface 151, and the first interface 131, the filter portion 220 and the second interface 151 form a main channel for drainage;

[0053] The connecting tube 300 is connected to the first interface 131 at one end through the three-way valve 400, and is connected to the second interface 151 at the other end through the three-way connector 500, and two of the ports on the three-way valve 400 are respectively connected to the connecting tube 300 and the first interface 131, and the other port of the three-way valve 400 serves as the inlet 410 of the drainage material, and two of the ports of the three-way connector 500 are respectively connected to the connecting tube 300 and the second interface 151, and the other end port of the three-way connector 500 serves as the outlet 510 of the drainage material, wherein the three-way valve 400, the connecting tube 300 and the three-way connector 500 form an auxiliary channel for the drainage material, and a valve switch 420 is provided on the three-way valve 400, and the valve switch 420 is used to cause one of the main channel and the auxiliary channel to be in a connected state and the other to be in a blocked state.

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

[0055] In the prior art, the entire filter 200 is connected to the main channel. When a polyp specimen enters the filter 200, although the liquid can be drained into the auxiliary channel, the user needs to use both hands to release the connection between the filter 200 and the main channel pipeline, and then take out the polyp specimen in the filter 200. The operation is relatively troublesome, and if polyp specimens from multiple organs are required, the filter 200 needs to be continuously disassembled and assembled, which increases the labor of medical staff.

[0056] In the present embodiment, when the polyp specimen enters the filter portion 220, the valve switch 420 is turned from a vertical state to a horizontal state. At this time, the medical staff can directly remove the entire filter 200 from the accommodating cavity 110 with one hand, which is easy to operate. After taking away the polyp specimen, the filter portion 220 in the filter 200 is replaced and inserted into the accommodating cavity 110 again, which saves time and effort.

[0057] The negative pressure specimen suction collection device provided by the present invention enables medical personnel to replace the filter 200 with one hand, which is easy to operate and saves time and effort.

[0058] It is worth mentioning that the carrier part 210 in the filter 200 can also be clamped between the upper and lower walls of the accommodating cavity 110 and connected to the upper and lower walls of the accommodating cavity 110, and a drawer-type connection is formed between the filter part 220 and the carrier part 210. When there is a polyp specimen in the filter part 220, the filter part 220 is directly pulled out of the carrier part 210, and then the updated filter part 220 is reinserted into the carrier part 210. The operation is also convenient and reliable.

[0059] In addition, the inlet 410 of the drainage is connected to the patient's body through a pipeline, and the outlet 510 of the drainage is connected to the negative pressure suction device through a pipeline.

[0060] Preferably, the filter 200 also includes a handle portion 230, which is formed by the side wall of the carrier portion 210 extending outward at a certain angle. When the filter 200 is connected to the main channel, the end of the handle portion 230 connected to the carrier portion 210 is located in the accommodating cavity 110, and the end of the handle portion 230 serving as the handle end is located outside the accommodating cavity 110, wherein the dimension of the handle portion 230 located in the accommodating cavity 110 is smaller than the dimension located outside the accommodating cavity 110; or when the filter 200 is connected to the main channel, the entire handle portion 230 is 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. By providing the handle portion 230, when the medical staff takes the filter 200, the relative distance between the medical staff's hand and the filter portion 220 is enlarged, thereby further preventing the polyp specimen in the filter portion 220 from being contaminated, and also preventing the dirt in the filter portion 220 from contaminating the hands of the medical staff.

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

[0063] Preferably, a notch 137 is formed by inward depression along the side wall of the suction seat 100, and the notch 137 is connected to the accommodating chamber 110, and the cavity wall portion of the accommodating chamber 110 close to the second interface 151 is exposed below the notch 137, wherein a sleeve 120 is provided on the exposed portion of the cavity wall, and the axial direction of the sleeve 120 is consistent with the drainage direction of the drainage object in the main channel; the filter 200 also includes a rotating portion 240, which is composed of a carrier portion The side wall of 210 extends outward at a certain angle, and the rotating portion 240 is nested with the sleeve 120. When the filter 200 is connected to the main channel, the end of the rotating portion 240 connected to the carrier portion 210 is located in the accommodating cavity 110, and the end of the rotating portion 240 that is nested with the sleeve 120 corresponds to the position of the notch 137; when the filter 200 is moved out of the accommodating cavity 110, the rotating portion 240 is completely exposed below the notch 137.

[0064] In this embodiment, by providing the sleeve 120 , a rotational fit is formed between the filter 200 and the wall of the accommodating cavity 110 , thereby making the use of the filter 200 more convenient.

[0065] If it is only necessary to take out the polyp specimen in the filter 200, the entire filter 200 is directly rotated out of the accommodating cavity 110, and then the medical staff can directly clamp the polyp specimen from the filter portion 220 with tweezers. If it is not only necessary to take out the polyp specimen in the filter 200, but also to replace the filter portion 220, at this time, due to the setting of the notch 137, when the carrier portion 210 in the filter 200 is moved out of the accommodating cavity 110, the rotating portion 240 is completely exposed in the notch 137. At this time, the medical staff can hold the handle portion 230 and move the filter 200 along the axial direction of the sleeve 120, and remove the entire filter 200 from the suction seat 100 through the notch 137, which can also realize the one-handed operation of the medical staff, saving time and effort.

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

[0067] Preferably, the accommodating cavity 110 includes 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, and 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, and 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, wherein the diameters of the first sealing ring 160 and the second sealing ring 170 are larger than the aperture of the through hole 211 and not larger than the maximum contour diameter of the carrier part 210, and 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 detachable structures and there is no connection between the filter 200 and the suction seat 100, when the main channel is in use, it is necessary to consider the sealing of the main channel. Therefore, sealing rings are arranged on the upper and lower walls of the accommodating chamber 110. On the one hand, it is avoided that the air pressure is unstable or "leakage" occurs in the main channel during negative pressure suction. On the other hand, it is avoided that "liquid leakage" occurs when draining the liquid. Therefore, the sealing of the main channel can be improved by arranging a sealing ring.

[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 may easily scrape the sealing ring out of the annular groove, thereby making the sealing ring lose 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] It is further pointed out that a first connecting boss 133 is provided on the first cavity wall 132, and a first concave cavity is provided on the first connecting boss 133, and a first positioning column 134 is formed at the cavity bottom of the first concave cavity extending toward the cavity opening of the first concave cavity, wherein a first annular groove 135 is formed between the outer wall of the first positioning column 134 and the inner wall of the first connecting boss 133, and 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 first sealing gland 180. Cover surface; a second connecting boss 153 is arranged on the second cavity wall 152, and a second concave cavity is arranged on the second connecting boss 153, and a second positioning column 154 is formed at the cavity bottom of the second concave cavity extending toward the cavity mouth of the second concave cavity, wherein a second annular groove 155 is formed between the outer wall of the second positioning column 154 and the inner wall of the second connecting boss 153, and the second sealing ring 170 is fixed in the second annular groove 155 through the second sealing cover 190, and a part of the second sealing ring 170 protrudes from the cover surface of the second sealing cover 190.

[0072] In this embodiment, the sealing ring is fixed in the annular groove by the sealing cover, and a part of the sealing ring protrudes from the cover surface of the sealing cover. This not only achieves a good sealing effect, but also prevents the sealing ring from detaching from the annular groove, thereby improving the reliability of the use of the sealing ring.

[0073] It is further pointed out that in order to facilitate the replacement of the sealing ring, the sealing cover and the connecting boss are arranged to be detachably connected, wherein a rotating connection is one of the more convenient detachable connections.

[0074] It is further pointed out that a third annular groove 181 is provided on the first sealing gland 180, and the outer wall height of the third annular groove 181 is greater than the inner wall height of the third annular groove 181, and a first clamping groove 182 is provided on the outer wall of the third annular groove 181, wherein the first clamping groove 182 is rotatably engaged with the first clamping block 136 on the outer wall of the first connecting boss 133, and a first slot 183 is provided on the cover surface of the first sealing gland 180, and the position of the first slot 183 corresponds to the position of the first sealing ring 160. Correspondingly; a fourth annular groove 191 is provided on the second sealing cover 190, and the outer wall height of the fourth annular groove 191 is greater than the inner wall height of the fourth annular groove 191, and a second clamping groove 192 is provided on the outer wall of the fourth annular groove 191, wherein the second clamping groove 192 is rotatably engaged with the second clamping block 156 on the outer wall of the second connecting boss 153, and a second slot hole 193 is provided on the cover surface of the second sealing cover 190, and the position of the second slot hole 193 corresponds to the position of the second sealing ring 170.

[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 includes 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 distributed from top to bottom along the drainage direction, wherein the accommodating chamber 110 is located on the middle seat body 140, the first chamber wall 132 is arranged on the upper seat plate 130, and the second chamber wall 152 is arranged on the lower seat plate 150, wherein a mounting platform 141 is arranged on the side wall of the middle seat body 140, and the position of the mounting platform 141 corresponds to the position of the notch 137 on the upper seat plate 130, and the sleeve 120 is connected to the mounting platform 141, and when the carrier part 210 is completely detached from the accommodating chamber 110, the filter 200 can move along the axial direction of the sleeve 120 and move out of the notch 137.

[0077] In this embodiment, the suction seat 100 is divided into an upper seat plate 130, a middle seat body 140 and a 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. Such a split setting is convenient for 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 also be formed into an integral setting, or the middle seat body 140 and the lower seat plate 150 can be formed into an integral setting.

[0078] Preferably, the suction seat 100 is provided with a translation structure 600 that can move along the axial direction of the object to be connected 700 and lock the suction seat 100 at a desired position, and the translation structure 600 includes:

[0079] A clamp buckle 610, one end of which is rotatably connected to the suction seat 100;

[0080] The pin hole bolt 620 has an axial hole at one end and a thread at the other end. The end with the axial hole is inserted into the suction seat 100, and the connection between the pin hole bolt 620 and the suction support is completed by a fastener, and the end with the thread is plug-fitted with the other end of the clamp buckle 610;

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

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

[0083] 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.

[0084] 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.

[0085] 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. A negative pressure specimen suction 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, and the cavity opening of the receiving cavity is located on the side wall of the suction seat, wherein a first interface and a second interface are respectively provided at both ends along the thickness direction of the suction seat, and the first interface and the second interface are both connected to the receiving cavity; The filter is detachably connected to the accommodating cavity and is not connected to the suction seat. The filter includes a carrier portion, and a through hole is provided on the carrier portion, wherein a filter portion is nested in the through hole. When the filter is horizontally inserted into the accommodating cavity, 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 a main channel for drainage; A connecting pipe, one end of which is connected to the first interface through a three-way valve, and the other end of which is connected to the second interface through a three-way joint, and two of the 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 an inlet for drainage, and two of the ports of the three-way joint are connected to the connecting pipe and the second interface respectively, and the other end port of the three-way joint serves as an outlet for drainage, wherein the three-way valve, the connecting pipe and the three-way joint form an auxiliary channel for drainage, and a valve switch is provided on the three-way valve, and the valve switch is used to cause 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. A negative pressure specimen suction and collection device according to claim 1, characterized in that: The filter also includes a handle portion, which is formed by the side wall of the carrier portion extending outward 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 in the accommodating cavity, and the end of the handle portion serving as a handle is located outside the accommodating cavity, wherein the dimension of the handle portion located in the accommodating cavity is smaller than the dimension located outside the accommodating cavity; or when the filter is connected to the main channel, the entire handle portion is located outside the accommodating cavity.

3. A negative pressure specimen suction and collection device according to claim 2, characterized in that: A notch is formed along the side wall of the suction seat, which is recessed inward and communicated with the accommodating chamber, and a portion of the cavity wall on the accommodating chamber near the second interface is exposed below the notch, wherein a sleeve is provided on the exposed portion of the cavity wall, and the axial direction of the sleeve is consistent with the drainage direction of the drainage object in the main channel; the filter also includes a rotating part, which is formed by the side wall of the carrier part extending outward at a certain angle, and the rotating part and the sleeve form a nested fit, wherein when the filter is connected to the main channel, one end of the rotating part connected to the carrier part is located in the accommodating chamber, and one end of the rotating part that is nested with the sleeve corresponds to the position of the notch; when the filter is moved out of the accommodating chamber, the rotating part is completely exposed below the notch.

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

5. The negative pressure specimen suction and collection device according to claim 3, characterized in that: The accommodating cavity includes a first cavity wall arranged on the same side as the first interface, and a second cavity wall arranged on the same side as the second interface, and a first annular groove is arranged on the first cavity wall, and a first sealing ring is embedded in the first annular groove, and 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 larger than the aperture of the through hole and not larger than the maximum contour 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.

6. The negative pressure specimen suction and collection device according to claim 3, characterized in that: The accommodating cavity includes a first cavity wall arranged on the same side as the first interface, and a second cavity wall arranged on the same side as the second interface, a first connecting boss is arranged on the first cavity wall, a first concave cavity is arranged on the first connecting boss, and a first positioning column is extended from the cavity bottom of the first concave cavity toward the cavity opening of the first concave cavity, wherein a first annular groove is formed between the outer wall of the first positioning column and the inner wall of the first connecting boss, and the first sealing ring is fixed in the first annular groove by the first sealing pressure cover, and a part of the first sealing ring protrudes from the cover surface of the first sealing pressure cover; a second connecting boss is arranged on the second cavity wall, a second concave cavity is arranged on the second connecting boss, and a second positioning column is extended from the cavity bottom of the second concave cavity toward the cavity opening of the second concave cavity, wherein a second annular groove is formed between the outer wall of the second positioning column and the inner wall of the second connecting boss, and the second sealing ring is fixed in the second annular groove by the second sealing pressure cover, and a part of the second sealing ring protrudes from the cover surface of the second sealing pressure cover.

7. A negative pressure specimen suction and collection device according to claim 6, characterized in that: A third annular groove is provided on the first sealing cover, and the outer wall height of the third annular groove is greater than the inner wall height of the third annular groove, and a first clamping groove is provided on the outer wall of the third annular groove, wherein the first clamping groove is rotatably clamped with the first clamping block on the outer wall of the first connecting boss, and a first slot hole is provided on the cover surface of the first sealing cover, and the position of the first slot hole corresponds to the position of the first sealing ring; a fourth annular groove is provided on the second sealing cover, and the outer wall height of the fourth annular groove is greater than the inner wall height of the fourth annular groove, and a second clamping groove is provided on the outer wall of the fourth annular groove, wherein the second clamping groove is rotatably clamped with the second clamping block on the outer wall of the second connecting boss, and a second slot hole is provided on the cover surface of the second sealing cover, and the position of the second slot hole corresponds to the position of the second sealing ring.

8. A negative pressure specimen suction 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, and the upper seat plate, the middle seat body and the lower seat plate are distributed from top to bottom along the drainage direction, wherein the accommodating cavity is located on the middle seat body, the first cavity wall is arranged on the upper seat plate, and the second cavity wall is arranged on the lower seat plate, wherein an installation platform is arranged on the side wall of the middle seat body, the position of the installation platform corresponds to the position of the notch on the upper seat plate, and the sleeve column is connected to the installation platform.

9. The negative pressure specimen suction and collection device according to claim 1, characterized in that: The suction seat is provided with a translation structure which can move along the axial direction of the object to be connected and lock the suction seat at a desired position, and the translation structure includes: A clamp buckle, one end of which is rotatably connected to the suction seat; A pin hole bolt is provided with an axial hole at one end and a thread at the other end, and the end provided with the axial hole is inserted into the suction seat, and the connection between the pin hole bolt and the suction support is completed by a fastener, and the end provided with the thread forms a plug-in fit with the other end of the clamp buckle; The plum blossom handle is screwed onto the threaded end of the pin hole bolt, and the connection between the clamp buckle and the pin hole bolt is completed through the plum blossom handle.

10. A negative pressure specimen suction 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, and the cavity opening of the receiving cavity is located on the side wall of the suction seat, wherein a first interface and a second interface are respectively provided at both ends along the thickness direction of the suction seat, and the first interface and the second interface are both connected to the receiving cavity; The filter is located in the accommodating cavity, and the filter includes a carrier part, the carrier part is clamped between the upper and lower cavity walls of the accommodating cavity, and is connected to the upper and lower cavity walls of the accommodating cavity; the filter part forms a drawer-type connection with the carrier part, when the filter part is inserted into the carrier part, 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 for drainage; A connecting pipe, one end of which is connected to the first interface through a three-way valve, and the other end of which is connected to the second interface through a three-way joint, and two of the 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 an inlet for drainage, and two of the ports of the three-way joint are connected to the connecting pipe and the second interface respectively, and the other end port of the three-way joint serves as an outlet for drainage, wherein the three-way valve, the connecting pipe and the three-way joint form an auxiliary channel for drainage, and a valve switch is provided on the three-way valve, and the valve switch is used to cause 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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