Manual negative pressure specimen suction collector

Abstract

The utility model provides a manual negative-pressure specimen suction collector, which belongs to the technical field of medical instruments and comprises a shell, a first suction tube, a second suction tube and a second suction tube. The rotating disc is located in the shell, a first penetrating part and a second penetrating part are arranged on the rotating disc, and through rotation of the rotating disc, the first penetrating part and the second penetrating part alternately correspond to the positions of the drainage channel and the first notch; one end of the handle is located outside the shell, and the other end of the handle extends into the shell, is rotationally connected with the shell and is provided with a first transmission part; the rotating piece is located in the shell, one end of the rotating piece is connected with the turntable, and the other end is provided with a second transmission part matched with the first transmission part; and the filter screen disc is detachably mounted in the second penetrating part. According to the pathological specimen collector, pathological specimens can be conveniently collected, and the collected pathological specimens can be taken down from the collector in time and properly stored, so that the problem of confusion generated when a plurality of pathological specimens are synchronously collected is avoided, and the reliability of pathological specimen collection is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology and relates to a collector, particularly a manual negative pressure specimen suction collector. Background Technology

[0002] When medical staff use negative pressure suction bottles to remove polyps from a patient's body, the suction tube of the bottle is inserted directly into the bottle. Under negative pressure, the polyp and other tissue samples can pass directly into the bottle through the suction tube. However, when it is necessary to examine the polyp tissue, collecting the suctioned polyp tissue from the bottle becomes very difficult.

[0003] Patent application (CN202122824924.1) discloses a polyp collector, including a cup body and a cup lid that can be rotatably fitted onto the cup body. The cup lid has a polyp suction port and a straw. One end of the straw is inserted into the bottom of the cup body from the center of the cup lid, and the other end of the straw is used to connect to a negative pressure suction device. Four collection grids are arranged in a ring above the filter chamber inside the cup body. The collection grids have open openings to form polyp accommodating cavities. The bottom of the collection grids has mesh. When rotated, the cup lid and the collection grids generate a tactile feedback through a groove and protrusion mechanism. The polyp suction port extends away from the cup body to connect to the endoscope suction port. The polyp suction port can selectively communicate with the polyp accommodating cavity of one of the collection grids.

[0004] The aforementioned polyp collector collects polyp specimens temporarily in the polyp accommodating cavity of the collection compartment. The collected polyp specimens can only be removed all at once after the surgery. This has two drawbacks: first, removing multiple polyp specimens at once can easily cause confusion, making it difficult for medical staff to determine which polyp specimen belongs to which pathological site; second, it cannot properly preserve the previously collected polyp specimens in a timely manner, which may pose a risk of specimen inactivation and affect the reliability of subsequent experimental data. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a manual negative pressure specimen aspiration collector that can avoid confusion of pathological specimens and ensure timely and proper preservation of collected pathological specimens, thereby improving the reliability of subsequent experimental data.

[0006] The objective of this utility model can be achieved through the following technical solution: A manual negative pressure specimen aspiration collector, comprising:

[0007] The housing has an internal mounting cavity and a first interface and a second interface connected to the mounting cavity. The first interface is connected to a body fluid inlet pipe and the second interface is connected to a body fluid outlet pipe. The body fluid inlet pipe and the body fluid outlet pipe form a body fluid drainage channel. A first notch is provided on the housing on the same side as the first interface.

[0008] A turntable is located inside the mounting cavity, and a first through-hole and a second through-hole are provided on the turntable. The axial direction of the first through-hole and the axial direction of the second through-hole are both consistent with the axial direction of the turntable. Through the rotation of the turntable, the first through-hole and the second through-hole alternately correspond to the positions of the drainage channel and the first notch.

[0009] The handle has one end located outside the housing and the other end extending into the mounting cavity and rotatably connected to the side of the housing with the second interface. The end rotatably connected to the housing is provided with a first transmission part.

[0010] The rotating component is located inside the mounting cavity. One end is connected to the turntable, and the other end is connected to the side of the housing with the second interface. The rotating component is provided with a second transmission part that cooperates with the first transmission part. The end of the rotating handle located outside the housing causes the turntable to rotate through the cooperation between the first transmission part and the second transmission part.

[0011] The filter tray is detachably installed inside the second through section to hold pathological specimens.

[0012] In the aforementioned manual negative pressure specimen aspiration collector, a second notch is provided on the side of the shell for the handle to reciprocate. The two sides of the second notch form the limit positions of the handle during rotation, namely the first limit position and the second limit position. The space between the first limit position and the second limit position is the rotation space of the handle. When the side of the handle contacts the first limit position, the positions of the first through part and the drainage channel, and the positions of the second through part and the first notch correspond one-to-one. When the side of the handle contacts the second limit position, the positions of the second through part and the drainage channel correspond. Alternatively, a limiting recess is provided on the turntable, and a limiting protrusion is provided on the shell. The rotation angle of the handle is controlled by the interlocking of the limiting recess and the limiting protrusion.

[0013] In the aforementioned manual negative pressure specimen aspiration collector, the first transmission part and the second transmission part are meshed, and the first transmission part is a meshing tooth provided on the side end face of the handle, while the second transmission part is a gear.

[0014] In the aforementioned manual negative pressure specimen aspiration collector, a guide slope is provided on the side wall of the second through section, so that a gap is formed between the edge of the filter screen and the side wall of the second through section.

[0015] In the aforementioned manual negative pressure specimen aspiration collector, a sealing structure is installed inside the housing, and the sealing structure includes a first sealing element and a second sealing element. The first sealing element is located between the turntable and the side where the first interface is located on the housing, and the second sealing element is located between the turntable and the side where the second interface is located on the housing. A first through groove is provided on the first sealing element, and a second through groove is provided on the second sealing element.

[0016] In the aforementioned manual negative pressure specimen aspiration collector, a positioning cavity is provided on one side of the housing where the first interface is located, and the first sealing member is embedded in the positioning cavity. One side of the first sealing member is arc-shaped, and the other side of the first sealing member is zigzag-shaped, with an arc transition between adjacent straight lines.

[0017] In the aforementioned manual negative pressure specimen aspiration collector, a positioning recess is provided on the second sealing element, and a positioning protrusion is provided on the housing on the same side as the second interface, wherein the positioning recess and the positioning protrusion are in a concave-convex fit.

[0018] In the aforementioned manual negative pressure specimen aspiration collector, a support member is also provided in the second through-part, and one end of the support member is used to install a filter screen. The second sealing member is provided with a concave gradient groove, and the groove depth of the gradient groove is gradually set. When the first through-part is connected to the drainage channel, the end of the support member with the filter screen corresponds to the position of the deepest part of the gradient groove, and the other end of the support member is located outside the second through-part, so that the entire support member is in a rocker state.

[0019] In the aforementioned manual negative pressure specimen aspiration collector, a guide groove is provided on each side of the second through portion, and a lug is provided on the support member to engage with the guide groove, wherein the lug can rotate within the guide groove.

[0020] In the aforementioned manual negative pressure specimen aspiration collector, a counterweight is provided at one end of the support for mounting the filter screen.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] (1) The present invention provides a manual negative pressure specimen aspiration collector that can conveniently collect pathological specimens and can remove the collected pathological specimens from the collector in a timely manner and properly preserve them, thereby avoiding the confusion caused by the simultaneous collection of multiple pathological specimens and improving the reliability of pathological specimen collection.

[0023] (2) A guide slope is provided on the side wall of the second through part so that a gap is formed between the edge of the filter screen and the side wall of the second through part. This allows medical staff to reliably grasp the filter screen when removing it from the second through part, whether by tools or fingers, thus improving the convenience, reliability and stability of medical staff when grasping the filter screen.

[0024] (3) By setting up a sealing structure, the sealing performance of the entire collector is improved, and leakage of body fluid is avoided. In addition, the sealing structure is made of ceramic material. Compared with rubber material as the sealing material, there is no need to consider the installation problem. If a rubber sealing structure is used, it needs to be assembled and fixed, which makes the structure of the entire collector more complicated. The sealing structure of ceramic material does not need to consider the assembly and fixing problem. On the other hand, there is no need to consider the replacement problem. Therefore, the sealing structure of rubber material will age or corrode and break after long-term use. When the sealing effect is poor, it needs to be replaced. The sealing structure of ceramic material does not need to consider replacement and has a long service life.

[0025] (4) By setting one side of the first seal as a zigzag line, the contact area between the side of the first seal and the positioning cavity is further increased. On the other hand, it can also ensure that the first seal does not rotate in the positioning cavity, so that the first through groove and the first interface are always coaxially set, ensuring the reliability of body fluid extraction and pathological specimen collection.

[0026] (5) By setting a carrier, and the carrier cooperates with the gradient groove on the second seal, the carrier is in a rocker state when it corresponds to the position of the first notch. This allows the filter tray with the collected pathological specimen to be removed directly and synchronously with the carrier, making the operation convenient and reliable. In addition, when collecting pathological specimens, the entire carrier is embedded in the second through part, which will not affect the rotation of the turntable.

[0027] (6) By setting counterweights, the entire support component is in a rocker state when the end of the support component with the filter screen corresponds to the deepest part of the groove in the gradient groove. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a manual negative pressure specimen aspiration collector according to this utility model.

[0029] Figure 2 This is a schematic diagram of the internal structure of a manual negative pressure specimen aspiration collector according to this utility model.

[0030] Figure 3 yes Figure 2A structural schematic diagram from another perspective is shown.

[0031] Figure 4 This is a schematic diagram of a partial structure of the shell in a preferred embodiment of the present invention. Figure 1 .

[0032] Figure 5 This is a schematic diagram of the turntable in a preferred embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the structure of the first sealing element in a preferred embodiment of the present invention.

[0034] Figure 7 This is a schematic diagram of the structure of the second sealing element in a preferred embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram of a partial structure of the shell in a preferred embodiment of the present invention. Figure 2 .

[0036] In the picture,

[0037] 10. Housing; 11. Mounting cavity; 12. First notch; 13. Second notch; 131. First extreme position; 132. Second extreme position; 14. Limiting protrusion; 15. Positioning recess; 16. Positioning protrusion;

[0038] 20; Body fluid inlet tube;

[0039] 30. Body fluid discharge pipe;

[0040] 40. Turntable; 41. First through part; 42. Second through part; 43. Limiting recess; 44. Guide groove;

[0041] 50. Handle; 51. First transmission unit;

[0042] 60. Rotating component; 61. Second transmission unit;

[0043] 70. Filter tray;

[0044] 80. First sealing element; 81. First through groove;

[0045] 90. Second seal; 91. Second through groove; 92. Positioning recess; 93. Gradient groove;

[0046] 100. Load-bearing component; 110. Counterweight component. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] like Figures 1 to 8 As shown, the present invention provides a manual negative pressure specimen aspiration collector, comprising:

[0050] The housing 10 has an internal mounting cavity 11, and a first interface and a second interface connected to the mounting cavity 11 are provided on the housing 10. The first interface is connected to a body fluid inlet pipe 20, and the second interface is connected to a body fluid outlet pipe 30. The body fluid inlet pipe 20 and the body fluid outlet pipe 30 form a body fluid drainage channel, and a first notch 12 is provided on the housing 10 on the same side as the first interface.

[0051] The turntable 40 is located inside the mounting cavity 11, and a first through part 41 and a second through part 42 are provided on the turntable 40. The axial direction of the first through part 41 and the axial direction of the second through part 42 are both consistent with the axial direction of the turntable 40. Through the rotation of the turntable 40, the first through part 41 and the second through part 42 alternately correspond to the positions of the drainage channel and the first notch 12.

[0052] The handle 50 has one end located outside the housing 10 and the other end extending into the mounting cavity 11 and rotatably connected to the side of the housing 10 that is provided with the second interface. The end rotatably connected to the housing 10 is provided with a first transmission part 51.

[0053] The rotating component 60 is located inside the mounting cavity 11. One end is connected to the turntable 40, and the other end is connected to the side of the housing 10 where the second interface is provided. The rotating component 60 is provided with a second transmission part 61 that cooperates with the first transmission part 51. The end of the rotating handle 50 located outside the housing 10 causes the turntable 40 to rotate through the cooperation between the first transmission part 51 and the second transmission part 61.

[0054] The filter tray 70 is detachably installed inside the second through section 42 to hold pathological specimens.

[0055] It is worth mentioning that the body fluid inlet tube 20 is connected to the patient's surgical site, and the body fluid outlet tube 30 is connected to the external negative pressure suction device.

[0056] The working principle of the manual negative pressure specimen aspiration collector provided by this utility model is as follows: In the initial state, the first through-part 41 is connected to the drainage channel. At this time, the first through-part 41 serves as a transition channel for body fluid to flow from the body fluid inlet pipe 20 to the body fluid outlet pipe 30. The second through-part 42 carries the filter screen 70 and corresponds to the position of the first notch 12. At this time, the filter screen 70 located in the second through-part 42 is exposed. During the operation, the body fluid from the surgical site enters through the body fluid inlet pipe 20 through the negative pressure aspirator and flows out through the first through-part 41 and the body fluid outlet pipe 30. When it is necessary to collect pathological specimens (such as polyp specimens) from the surgical site, the medical staff holds the end of the handle 50 located outside the housing 10 and rotates it, which is connected between the first transmission part 51 and the second transmission part 61. With the cooperation of the two devices, the turntable 40 rotates, causing the first through-hole 41 to be misaligned with the drainage channel, and the second through-hole 42 to be misaligned with the first notch 12, until the second through-hole 42 corresponds to the position of the drainage channel. At this time, the pathological specimen enters from the body fluid inlet tube 20 and falls into the filter screen 70 on the second through-hole 42 under the action of the negative pressure suction device. After the pathological specimen is collected, the handle 50 is reversed until the first through-hole 41 corresponds to the position of the drainage channel again, and the filter screen 70 on the second through-hole 42 corresponds to the position of the notch. At this time, the medical staff can remove the filter screen 70 containing the pathological specimen from the second through-hole 42 and put the new filter screen 70 back into the second through-hole 42 to prepare for the collection of the next pathological specimen.

[0057] This invention provides a manual negative pressure specimen aspiration collector that can conveniently collect pathological specimens and promptly remove and properly preserve the collected specimens, thereby avoiding confusion when multiple pathological specimens are collected simultaneously and improving the reliability of pathological specimen collection.

[0058] It is worth mentioning that the side of the housing 10 is provided with a second notch 13 for the handle 50 to reciprocate, and the two sides of the second notch 13 form the limit positions of the handle 50 when rotating, namely the first limit position 131 and the second limit position 132, and the space between the first limit position 131 and the second limit position 132 is the rotation space of the handle 50. When the side of the handle 50 is in contact with the first limit position 131, the position of the first through part 41 and the drainage channel, and the position of the second through part 42 and the first notch 12 correspond one-to-one; when the side of the handle 50 is in contact with the second limit position 132, the position of the second through part 42 corresponds to the drainage channel, thereby ensuring that the filter screen 70 located in the second through part 42 can reliably collect pathological specimens.

[0059] Furthermore, it is pointed out that the first transmission part 51 and the second transmission part 61 are meshing transmissions, and the first transmission part 51 is a meshing tooth provided on the side end face of the handle 50, while the second transmission part 61 is a gear. The meshing transmission ensures the reliability of the action transmission when the handle 50 drives the turntable 40 to rotate.

[0060] It is worth mentioning that the gear can be integrally formed on the rotating component 60, in which case the rotating component 60 serves as the gear shaft, or the gear can be connected to the rotating component 60 via a keyway, allowing the gear and the rotating component 60 to rotate synchronously. The rotating component 60 and the turntable 40 can be integrally fixedly connected, or fixed by fasteners, or fixed by the polygonal shape on the side of the rotating component 60 to the turntable 40 for positioning. The connection method between the rotating component 60 and the turntable 40 is not limited to the above-mentioned methods; any method that ensures synchronous rotation of the rotating component 60 and the turntable 40 when the handle 50 is rotated is acceptable.

[0061] In addition, the rotating part 60 is movably connected to the side of the housing 10 where the second interface is located, i.e., a rotating connection. Generally, this rotating connection adopts a concave-convex fit, that is, a recess is provided on the side of the housing 10 where the second interface is located, and one end of the rotating part 60 is inserted into the recess to form a plug-in fit with the recess. In order to reduce wear, a bearing can be nested on the end of the rotating part 60 that is plugged into the recess, or a bearing can be directly embedded in the recess to ensure the smoothness of the rotating part 60 during rotation.

[0062] In a further preferred embodiment, to facilitate the removal of the filter screen 70 from the second through-hole 42, a guide slope can be provided on the side wall of the second through-hole 42, so that a gap is formed between the edge of the filter screen 70 and the side wall of the second through-hole 42. This allows medical personnel to reliably grasp the filter screen 70 when removing it from the second through-hole 42, whether using tools or fingers, thereby improving the convenience, reliability, and stability of the medical personnel when grasping the filter screen 70.

[0063] Preferably, the turntable 40 is provided with a limiting recess 43, and the housing 10 is provided with a limiting protrusion 14 that engages with the limiting recess 43. The engagement between the limiting recess 43 and the limiting protrusion 14 limits the radial degree of freedom of the turntable 40, so that the turntable 40 can only rotate circumferentially.

[0064] It is worth mentioning that the positions of the limiting recess 43 and the limiting protrusion 14 can be interchanged. That is, the limiting recess 43 is set on the housing 10 and the limiting protrusion 14 is set on the turntable 40, which can also limit the radial degree of freedom of the turntable 40.

[0065] In addition, the travel distance of the handle 50 between the first limit position 131 and the second limit position 132 is the same as the travel distance of the limiting protrusion 14 on the limiting recess 43. The arc length of the limiting recess 43 is generally greater than the travel distance of the limiting protrusion 14 on the limiting recess 43.

[0066] It is further noted that the limiting recess 43 is provided at the edge of the turntable 40, and the limiting protrusion 14 is provided on the cavity wall of the mounting cavity 11.

[0067] Preferably, during normal use and when collecting pathological specimens, bodily fluids are carried out from the patient's body and enter the housing 10 through the bodily fluid inlet pipe 20. Therefore, in order to improve the sealing of the entire collector and prevent leakage of bodily fluids, a sealing structure is installed inside the housing 10. The sealing structure includes a first sealing element 80 and a second sealing element 90. The first sealing element 80 is located between the turntable 40 and the side where the first interface is located on the housing 10, and the second sealing element 90 is located between the turntable 40 and the side where the second interface is located on the housing 10. A first through groove 81 is provided on the first sealing element 80, and a second through groove 91 is provided on the second sealing element 90.

[0068] It is worth mentioning that when the first through-part 41 is connected to the drainage channel, the first through-slot 81 and the second through-slot 91 are simultaneously connected to the drainage channel. The first through-slot 81, the first through-part 41, and the second through-slot 91 form a transition channel for body fluid to flow from the body fluid inlet pipe 20 to the body fluid outlet pipe 30. When collecting pathological specimens, the first through-slot 81, the second through-slot 91, and the second through-part 42 are connected to form a collection channel for collecting pathological specimens.

[0069] Furthermore, the first sealing element 80 and the second sealing element 90 are made of ceramic material. Compared with rubber material, ceramic material eliminates the need for installation. Rubber sealing structures require assembly and fixing, complicating the overall collector structure. Ceramic sealing structures, on the other hand, eliminate the need for replacement. Rubber sealing structures are prone to aging, corrosion, and breakage after prolonged use, requiring replacement when the sealing effect deteriorates. Ceramic sealing structures, however, do not require replacement and have a longer service life.

[0070] Preferably, a positioning cavity 15 is provided on the side where the first interface is located on the housing 10, and the first sealing member 80 is embedded in the positioning cavity 15. This ensures that the first sealing member 80 will not rotate synchronously with the turntable 40 during rotation, thereby ensuring the reliability of body fluid extraction and pathological specimen collection.

[0071] It is worth mentioning that one side of the first seal 80 is arc-shaped, and the other side of the first seal 80 is zigzag-shaped, with an arc transitioning between adjacent straight lines.

[0072] In this embodiment, by setting one side of the first seal 80 as a zigzag line, the contact area between the side of the first seal 80 and the positioning cavity 15 is further increased. On the other hand, it can also ensure that the first seal 80 does not rotate in the positioning cavity 15, so that the first through groove 81 and the first interface are always coaxially arranged, ensuring the reliability of body fluid extraction and pathological specimen collection.

[0073] Preferably, the second seal 90 is provided with a positioning recess 92, and the housing 10 is provided with a positioning protrusion 16 on the same side as the second interface. The interlocking between the positioning recess 92 and the positioning protrusion 16 ensures that the second seal 90 does not rotate synchronously with the turntable 40 when the turntable 40 rotates.

[0074] It is worth mentioning that the positions of the positioning recess 92 and the positioning protrusion 16 can be interchanged, that is, the positioning recess 92 is set on the side of the housing 10 where the second interface is located, and the positioning protrusion 16 is set on the second seal 90.

[0075] In this embodiment, by providing a positioning cavity 15, a positioning recess 92, and a positioning protrusion 16, the housing 10, the first seal 80, and the second seal 90 remain stationary and do not rotate with the turntable 40 when the turntable 40 rotates.

[0076] Preferably, a support member 100 is also provided inside the second through-part 42, and one end of the support member 100 is used to install the filter screen 70. The second sealing member 90 is provided with a concave, gradually changing groove 93, and the groove depth of the gradually changing groove 93 is gradually set. When the first through-part 41 is connected to the drainage channel, the end of the support member 100 carrying the filter screen 70 corresponds to the deepest point of the gradually changing groove 93. At this time, the other end of the support member 100 is located outside the second through-part 42, so that the entire... The carrier 100 is in a rocker state. As the turntable 40 rotates, the end of the carrier 100 on which the filter screen 70 is loaded gradually aligns with the shallowest point of the groove in the gradient groove 93. During this process, the other end of the carrier 100 gradually falls back and enters the second through part 42. When the end of the carrier 100 on which the filter screen is loaded comes into contact with the plane where the gradient groove 93 is located on the second seal 90, both ends of the carrier 100 are in the same horizontal plane and are both located in the second through part 42.

[0077] In this embodiment, by setting a support member 100, and the support member 100 cooperating with the gradient groove 93 on the second sealing member 90, the support member 100 is in a rocker state when it corresponds to the position of the first notch 12. This allows the filter tray 70, which has been used to collect pathological specimens, to be removed directly and synchronously with the support member 100, making the operation convenient and reliable. In addition, when collecting pathological specimens, the entire support member 100 is embedded in the second through part 42, which will not affect the rotation of the turntable 40.

[0078] In addition, the carrier 100 is provided so that hospital staff can remove the filter tray 70 without contact. Furthermore, the replacement of the filter tray 70 does not affect the doctor's operation of suctioning other debris from the patient's body.

[0079] Furthermore, a guide groove 44 is provided on each side of the second through portion 42, and a lug is provided on the support member 100 to engage with the guide groove 44, wherein the lug can rotate within the guide groove 44.

[0080] In a further preferred embodiment, a counterweight 110 is provided at one end of the support member 100 for loading the filter screen 70. By providing the counterweight 110, it is further ensured that when the end of the support member 100 loaded with the filter screen 70 corresponds to the position of the deepest part of the groove in the gradient groove 93, the entire support member 100 is in a rocker state.

[0081] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0082] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0083] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A manual negative pressure specimen aspiration collector, characterized in that, include: The housing has an internal mounting cavity and a first interface and a second interface connected to the mounting cavity. The first interface is connected to a body fluid inlet pipe and the second interface is connected to a body fluid outlet pipe. The body fluid inlet pipe and the body fluid outlet pipe form a body fluid drainage channel. A first notch is provided on the housing on the same side as the first interface. A turntable is located inside the mounting cavity, and a first through-hole and a second through-hole are provided on the turntable. The axial direction of the first through-hole and the axial direction of the second through-hole are both consistent with the axial direction of the turntable. Through the rotation of the turntable, the first through-hole and the second through-hole alternately correspond to the positions of the drainage channel and the first notch. The handle has one end located outside the housing and the other end extending into the mounting cavity and rotatably connected to the side of the housing with the second interface. The end rotatably connected to the housing is provided with a first transmission part. The rotating component is located inside the mounting cavity. One end is connected to the turntable, and the other end is connected to the side of the housing with the second interface. The rotating component is provided with a second transmission part that cooperates with the first transmission part. The end of the rotating handle located outside the housing causes the turntable to rotate through the cooperation between the first transmission part and the second transmission part. The filter tray is detachably installed inside the second through section to hold pathological specimens.

2. The manual negative pressure specimen aspiration collector according to claim 1, characterized in that, The side of the housing is provided with a second notch for the handle to reciprocate, and the two sides of the second notch form the limit positions of the handle during rotation, namely the first limit position and the second limit position, and the space between the first limit position and the second limit position is the rotation space of the handle. When the side of the handle is in contact with the first limit position, the position of the first through part and the drainage channel, and the position of the second through part and the first notch correspond one-to-one; when the side of the handle is in contact with the second limit position, the position of the second through part and the drainage channel correspond. Alternatively, a limiting recess is provided on the turntable, and a limiting protrusion is provided on the housing. The rotation angle of the handle is controlled by the interlocking of the limiting recess and the limiting protrusion.

3. A manual negative pressure specimen aspiration collector according to claim 1, characterized in that, The first transmission part and the second transmission part are meshed transmissions, and the first transmission part is a meshing tooth provided on the side end face of the handle, while the second transmission part is a gear.

4. A manual negative pressure specimen aspiration collector according to claim 1, characterized in that, A guide slope is provided on the side wall of the second through section, so that a gap is formed between the edge of the filter screen and the side wall of the second through section.

5. A manual negative pressure specimen aspiration collector according to claim 1, characterized in that, A sealing structure is installed inside the housing, and the sealing structure includes a first sealing element and a second sealing element. The first sealing element is located between the turntable and the side where the first interface is located on the housing, and the second sealing element is located between the turntable and the side where the second interface is located on the housing. A first through groove is provided on the first sealing element, and a second through groove is provided on the second sealing element.

6. A manual negative pressure specimen aspiration collector according to claim 5, characterized in that, A positioning cavity is provided on one side of the housing where the first interface is located, and the first seal is embedded in the positioning cavity. One side of the first seal is arc-shaped, and the other side of the first seal is zigzag-shaped, with an arc transitioning between adjacent straight lines.

7. A manual negative pressure specimen aspiration collector according to claim 5, characterized in that, The second seal is provided with a positioning recess, and the housing is provided with a positioning protrusion on the same side as the second interface, wherein the positioning recess and the positioning protrusion are in a concave-convex fit.

8. A manual negative pressure specimen aspiration collector according to any one of claims 1 to 7, characterized in that, A support member is also provided in the second through part, and one end of the support member is used to install the filter screen. The second sealing member is provided with a concave gradient groove, and the groove depth of the gradient groove is gradually set. When the first through part is connected to the drainage channel, the end of the support member with the filter screen corresponds to the position of the deepest part of the gradient groove, and the other end of the support member is located outside the second through part, so that the entire support member is in a rocker state.

9. A manual negative pressure specimen aspiration collector according to claim 8, characterized in that, A guide groove is provided on each side of the second through portion, and a lug is provided on the support member to engage with the guide groove, wherein the lug can rotate within the guide groove.

10. A manual negative pressure specimen aspiration collector according to claim 8, characterized in that, A counterweight is provided at the end of the support component used to load the filter screen.

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