Manual negative pressure specimen suction collector

Abstract

The invention provides a manual negative pressure specimen suction collector, which belongs to the technical field of medical instruments, and comprises: a housing provided with a drainage channel and a first gap; 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, the collected pathological specimens can be taken down from the collector in time and properly stored, the confusion problem generated when multiple pathological specimens are synchronously collected is avoided, and the pathological specimen collection reliability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices and relates to a collector, in particular to a manual negative pressure specimen suction collector. Background Art

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

[0003] The patent application (CN202122824924.1) discloses a polyp collector, comprising a cup body and a cup cover rotatably covered on the cup body, the cup cover is provided with a polyp suction port and a straw, one end of the straw is inserted from the center of the cup cover into the inner bottom of the cup body, and the other end of the straw is used to connect a negative pressure suction device, and four collecting grids distributed in an annular shape are provided above the filter cavity in the cup body, the collecting grid is provided with an open mouth to form a polyp containing cavity, and a mesh is provided at the bottom of the collecting grid. When rotating, the cup cover and the collecting grid produce a sense of frustration through the groove and protrusion mechanism, and the polyp suction port extends toward the side away from the cup body for connecting to the endoscope suction port, and the polyp suction port can be selectively connected to the polyp containing cavity of one of the collecting grids.

[0004] The polyp collector described above collects polyp specimens in the polyp containing cavity of the collection grid for temporary storage. The collected polyp specimens can only be taken out at one time after the operation is over. This will have two defects. First, it is easy to cause confusion when taking out multiple polyp specimens at one time, resulting in medical staff not knowing which polyp specimen belongs to which pathological part; second, the polyp specimens collected previously cannot be properly preserved in time, and there may be a risk of specimen inactivation, affecting the reliability of subsequent experimental data. 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 manual negative pressure specimen suction collector that can avoid confusion of pathological specimens and can properly preserve the collected pathological specimens in a timely manner, thereby improving the reliability of subsequent experimental data.

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

[0007] A shell body, wherein an installation cavity is provided inside, and a first interface and a second interface connected to the installation cavity are provided on the shell body, wherein the first interface is connected to a body fluid feed pipe, and the second interface is connected to a body fluid discharge pipe, a body fluid drainage channel is formed by the body fluid feed pipe and the body fluid discharge pipe, and a first notch is provided on the same side of the shell body as the first interface;

[0008] A rotating disk is located in the installation cavity, and a first through-portion and a second through-portion are provided on the rotating disk, and the axial direction of the first through-portion and the axial direction of the second through-portion are consistent with the axial direction of the rotating disk, wherein, through the rotation of the rotating disk, the first through-portion and the second through-portion are alternately corresponding to the positions of the drainage channel and the first notch;

[0009] A handle, one end of which is located outside the housing, and the other end of which extends into the mounting cavity and is rotatably connected to a side of the housing provided with a second interface, and one end of which is rotatably connected to the housing is provided with a first transmission part;

[0010] The rotating member is located in the installation cavity, one end of which is connected to the rotating disk, and the other end of which is connected to a side of the housing provided with a second interface, and a second transmission part matched with the first transmission part is provided on the rotating member, wherein the end of the rotating handle located outside the housing cooperates with the first transmission part to cause the rotating disk to rotate;

[0011] The filter screen is detachably mounted in the second penetration portion to carry pathological specimens.

[0012] In the above-mentioned manual negative pressure specimen suction collector, a second notch is provided on the side of the shell for the reciprocating rotation of the handle, and the two sides of the second notch form the limit positions of the handle when rotating, which are the first limit position and the second limit position respectively, and the space between the first limit position and the second limit position is the rotation space of the handle, wherein, when the side of the handle contacts the first limit position, the position of the first through portion and the drainage channel, and the position of the second through portion and the first notch correspond one by one respectively; when the side of the handle contacts the second limit position, the second through portion corresponds to the position of the drainage channel, or a limiting recess is provided on the turntable, and an upper limiting convex is provided on the shell, wherein the rotation angle of the handle is controlled by the concave-convex cooperation between the limiting recess and the limiting convex.

[0013] In the above-mentioned manual negative pressure specimen suction collector, the first transmission part and the second transmission part are meshing transmission, and the first transmission part is meshing teeth arranged on the lateral end surface of the handle, and the second transmission part is a gear.

[0014] In the above-mentioned manual negative pressure specimen suction collector, a guide slope is provided on the side wall of the second penetration portion, so that a gap is formed between the edge of the filter screen and the side wall of the second penetration portion.

[0015] In the above-mentioned manual negative pressure specimen suction collector, a sealing structure is installed inside the shell, and the sealing structure includes a first seal and a second seal, wherein the first seal is located between the turntable and the side of the shell where the first interface is located, and the second seal is located between the turntable and the side of the shell where the second interface is located, and a first through groove is provided on the first seal, and a second through groove is provided on the second seal.

[0016] In the above-mentioned manual negative pressure specimen suction collector, a positioning cavity is provided on the side of the shell where the first interface is located, and the first seal is embedded in the positioning cavity, wherein one side of the first seal is arranged in an arc shape, the other side of the first seal is arranged in a broken line shape, and a circular arc transition is provided between two adjacent straight lines.

[0017] In the above-mentioned manual negative pressure specimen suction collector, a positioning recess is provided on the second sealing member, and a positioning protrusion is provided on the shell body at the same side as the second interface, wherein the positioning recess and the positioning protrusion are concave-convex matched.

[0018] In the above-mentioned manual negative pressure specimen suction collector, a supporting member is also arranged in the second through-hole, and one end of the supporting member is used to install a filter mesh plate, wherein an inwardly concave gradient groove is arranged on the second sealing member, and the groove depth of the gradient groove is gradually arranged, when the first through-hole is connected with the drainage channel, one end of the supporting member on which the filter mesh plate is loaded corresponds to the position with the deepest groove depth in the gradient groove, and the other end of the supporting member is located outside the second through-hole, so that the entire supporting member is in a seesaw state.

[0019] In the above-mentioned manual negative pressure specimen suction collector, a guide groove is provided on each side of the second penetration portion, and a lug is provided on the carrier to engage with the guide groove, wherein the lug can rotate in the guide groove.

[0020] In the above-mentioned manual negative pressure specimen suction collector, a counterweight is provided on one end of the carrier for loading the filter screen.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The manual negative pressure specimen suction collector provided by the present invention can conveniently collect pathological specimens, and can promptly remove the collected pathological specimens from the collector and properly preserve them, thereby avoiding the confusion problem caused by the simultaneous collection of multiple pathological specimens, thereby improving the reliability of pathological specimen collection.

[0023] (2) A guiding slope is provided on the side wall of the second through-portion so that a gap is formed between the edge of the filter screen and the side wall of the second through-portion, so that when medical staff remove the filter screen from the second through-portion, they can reliably grasp the filter screen, whether by tools or by fingers, thereby improving the convenience, reliability and stability of medical staff in grasping the filter screen.

[0024] (3) By setting up a sealing structure, the sealing performance of the entire collector is improved to avoid leakage of body fluids. In addition, the sealing structure adopts ceramic material. Compared with the use of rubber material as the sealing material, on the one hand, there is no need to consider the installation problem. Because if a sealing structure made of rubber material is used, the sealing structure needs to be assembled and fixed, which makes the structure of the entire collector complicated. The sealing structure of ceramic material does not need to consider the assembly and fixing problems. 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 be considered for replacement and has a longer service life.

[0025] (4) By setting one side of the first sealing member into a fold line, on the one hand, the contact area between the side surface of the first sealing member and the positioning cavity is further increased, and on the other hand, it can ensure that the first sealing member does not rotate in the positioning cavity, so that the first through groove and the first interface are always coaxially arranged, thereby ensuring the reliability of the extraction of body fluids and the collection of pathological specimens.

[0026] (5) By providing a carrier, and the carrier cooperates with the gradient groove on the second sealing member, when the carrier corresponds to the first notch, the carrier is in a seesaw state, so that when taking out the filter screen that has collected the pathological specimens, it can be taken out directly and synchronously with the carrier, which is convenient and reliable to operate. In addition, when collecting the pathological specimens, the entire carrier is completely buried in the second penetration portion and will not affect the rotation of the turntable.

[0027] (6) By providing a counterweight, it is further ensured that when one end of the carrier loaded with the filter screen corresponds to the deepest position in the gradient groove, the entire carrier is in a seesaw state. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a manual negative pressure specimen suction collector of the present invention.

[0029] Figure 2 It is a schematic diagram of the internal structure of a manual negative pressure specimen suction collector of the present invention.

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

[0031] Figure 4 The partial structure of the housing in a preferred embodiment of the present invention is shown in FIG. Figure 1 .

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

[0033] Figure 6 It is a schematic structural diagram of the first sealing member in a preferred embodiment of the present invention.

[0034] Figure 7 It is a schematic structural diagram of the second sealing member in a preferred embodiment of the present invention.

[0035] Figure 8 The partial structure of the housing in a preferred embodiment of the present invention is shown in FIG. Figure 2 .

[0036] In the figure,

[0037] 10. Shell; 11. Mounting cavity; 12. First notch; 13. Second notch; 131. First limit position; 132. Second limit position; 14. Positioning convex portion; 15. Positioning concave cavity; 16. Positioning convex portion;

[0038] 20; body fluid feeding tube;

[0039] 30. Body fluid discharge pipe;

[0040] 40. Rotating plate; 41. First penetration portion; 42. Second penetration portion; 43. Position limiting recess; 44. Guide groove;

[0041] 50. handle; 51. first transmission part;

[0042] 60. Rotating member; 61. Second transmission part;

[0043] 70. Filter plate;

[0044] 80. a first sealing member; 81. a first through groove;

[0045] 90. second sealing member; 91. second through groove; 92. positioning recess; 93. gradual groove;

[0046] 100. load-bearing member; 110. counterweight member. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

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

[0050] The housing 10 has an installation cavity 11 disposed therein, and a first interface and a second interface connected to the installation cavity 11 are disposed on the housing 10, wherein the first interface is connected to a body fluid feed pipe 20, and the second interface is connected to a body fluid discharge pipe 30, a body fluid drainage channel is formed by the body fluid feed pipe 20 and the body fluid discharge pipe 30, and a first notch 12 is disposed on the housing 10 on the same side as the first interface;

[0051] The rotating disk 40 is located in the installation cavity 11, and is provided with a first through portion 41 and a second through portion 42. The axial direction of the first through portion 41 and the axial direction of the second through portion 42 are consistent with the axial direction of the rotating disk 40. The rotating disk 40 rotates so that the first through portion 41 and the second through portion 42 are alternately corresponding to the positions of the drainage channel and the first notch 12.

[0052] A handle 50, one end of which is located outside the housing 10, and the other end of which extends into the mounting cavity 11 and is rotatably connected to a side of the housing 10 provided with a second interface, and a first transmission part 51 is provided at one end of the handle 50 rotatably connected to the housing 10;

[0053] The rotating member 60 is located in the installation cavity 11, one end of which is connected to the rotating disk 40, and the other end of which is connected to the side of the housing 10 provided with the second interface, and the rotating member 60 is provided with a second transmission part 61 that cooperates with the first transmission part 51, wherein the end of the rotating handle 50 located outside the housing 10 cooperates with the first transmission part 51 to cause the rotating disk 40 to rotate;

[0054] The filter screen 70 is detachably mounted in the second through portion 42 to carry pathological specimens.

[0055] It is worth mentioning that the body fluid feed tube 20 is connected to the surgical site of the patient, and the body fluid discharge tube 30 is connected to an external negative pressure aspirator.

[0056] The present invention provides a manual negative pressure specimen suction collector. The working principle is that in the initial state, the first through-portion 41 is connected to the drainage channel. At this time, the first through-portion 41 serves as a transition channel for body fluid to flow from the body fluid feed pipe 20 to the body fluid discharge pipe 30. The second through-portion 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-portion 42 is in an exposed state. When the patient is undergoing surgery, the body fluid of the surgical site enters from the body fluid feed pipe 20 through the negative pressure aspirator and flows out through the first through-portion 41 and the body fluid discharge pipe 30. When it is necessary to collect pathological specimens (such as polyp specimens) at the patient's surgical site, the medical staff holds the end of the handle 50 located outside the shell 10 and rotates it, through the first transmission part 51 and the second transmission part 61. The handle 50 is used to cooperate with the first through-portion 41 to drive the turntable 40 to rotate, so that the first through-portion 41 is misaligned with the drainage channel, and the second through-portion 42 is misaligned with the first notch 12, until the second through-portion 42 corresponds to the position of the drainage channel. At this time, the pathological specimen enters from the body fluid feeding tube 20 under the action of the negative pressure aspirator and falls into the filter mesh plate 70 on the second through-portion 42. When the pathological specimen is collected, the handle 50 is reversed until the first through-portion 41 corresponds to the position of the drainage channel again, and the filter mesh plate 70 on the second through-portion 42 corresponds to the position of the notch. At this time, the medical staff can remove the filter mesh plate 70 carrying the pathological specimen from the second through-portion 42, and put the new filter mesh plate 70 into the second through-portion 42 again, so as to prepare for the collection of the next pathological specimen.

[0057] The present invention provides a manual negative pressure specimen suction collector, which can conveniently collect pathological specimens, and can promptly remove the collected pathological specimens from the collector and properly preserve them, thereby avoiding confusion caused by simultaneous collection of multiple pathological specimens and improving the reliability of pathological specimen collection.

[0058] It is worth mentioning that a second notch 13 is provided on the side of the shell 10 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, which are the first limit position 131 and the second limit position 132 respectively, and the space between the first limit position 131 and the second limit position 132 is the rotation space of the handle 50, wherein, when the side of the handle 50 contacts the first limit position 131, the position of the first through portion 41 and the drainage channel, and the position of the second through portion 42 and the first notch 12 correspond one by one respectively; when the side of the handle 50 contacts the second limit position 132, the second through portion 42 corresponds to the position of the drainage channel, thereby ensuring that the filter mesh plate 70 located in the second through portion 42 can reliably collect pathological specimens.

[0059] It is further pointed out that the first transmission part 51 and the second transmission part 61 are meshing transmission, and the first transmission part 51 is meshing teeth arranged on the lateral end surface of the handle 50, and the second transmission part 61 is a gear. The meshing transmission is adopted to ensure the reliability of the motion transmission when the handle 50 drives the rotating disk 40 to rotate.

[0060] It is worth mentioning that the gear can be integrally formed on the rotating member 60, in which case the rotating member 60 is a gear shaft, or the gear is connected to the rotating member 60 through a keyway, so that the gear and the rotating member 60 can rotate synchronously, wherein the rotating member 60 and the turntable 40 can be integrally fixedly connected, or connected and fixed by fasteners, or fixed by the polygon on the side of the rotating member 60 and the turntable 40. The connection method between the rotating member 60 and the turntable 40 is not limited to the above-mentioned ones, as long as the handle 50 is rotated, the rotating member 60 and the turntable 40 can rotate synchronously.

[0061] In addition, there is an active connection between the rotating member 60 and the side of the shell 10 where the second interface is located, that is, a rotating connection. Generally, the rotating connection adopts a concave-convex fit, that is, a recess is provided on the side of the shell 10 where the second interface is located, and one end of the rotating member 60 is inserted into the recess to form a plug-in fit with the recess. In order to reduce wear, a bearing may be embedded in the end of the rotating member 60 that is plug-in fit with the recess, or a bearing may be directly buried in the recess to ensure the smoothness of the rotating member 60 during rotation.

[0062] Further preferably, in order to facilitate the removal of the filter mesh plate 70 from the second through-portion 42, a guide slope can be provided on the side wall of the second through-portion 42, so that a gap is formed between the edge of the filter mesh plate 70 and the side wall of the second through-portion 42, so that when medical staff remove the filter mesh plate 70 from the second through-portion 42, they can reliably grasp the filter mesh plate 70, whether by tools or by fingers, thereby improving the convenience, reliability and stability of medical staff in grasping the filter mesh plate 70.

[0063] Preferably, a limiting recess 43 is provided on the turntable 40, and a limiting protrusion 14 which cooperates with the limiting recess 43 is provided on the shell 10, wherein the concave-convex cooperation between the limiting recess 43 and the limiting protrusion 14 limits the radial freedom of the turntable 40, so that the turntable 40 can only realize circumferential rotation.

[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 shell 10, and the limiting protrusion 14 is set on the turntable 40, which can also limit the radial freedom of the turntable 40.

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

[0066] It is further pointed out that the limiting recess 43 is arranged at the edge of the turntable 40 , and the limiting protrusion 14 is arranged on the cavity wall of the installation cavity 11 .

[0067] Preferably, when the collector is in normal use or when collecting pathological specimens, body fluids are brought out of the patient's body and enter the shell 10 through the body fluid feed tube 20. Therefore, in order to improve the sealing performance of the entire collector and avoid leakage of body fluids, a sealing structure is installed inside the shell 10, and the sealing structure includes a first seal 80 and a second seal 90, wherein the first seal 80 is located between the turntable 40 and the side of the shell 10 where the first interface is located, and the second seal 90 is located between the turntable 40 and the side of the shell 10 where the second interface is located, and a first through groove 81 is provided on the first seal 80, and a second through groove 91 is provided on the second seal 90.

[0068] It is worth mentioning that when the first through portion 41 is connected to the drainage channel, the first through groove 81 and the second through groove 91 are synchronously connected to the drainage channel, wherein the first through groove 81, the first through portion 41, and the second through groove 91 form a transition channel for body fluid to flow from the body fluid feed pipe 20 to the body fluid discharge pipe 30; when collecting pathological specimens, the first through groove 81, the second through groove 91 are connected to the second through portion 42 to form a collection channel for collecting pathological specimens.

[0069] In addition, the first seal 80 and the second seal 90 are made of ceramic material. Compared with rubber material as the sealing material, on the one hand, there is no need to consider the installation problem, because if a sealing structure made of rubber material is used, the sealing structure needs to be assembled and fixed, which makes the structure of the entire collector complicated, while the sealing structure of ceramic material does not need to consider assembly and fixing problems, and on the other hand, there is no need to consider replacement problems. 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 be considered for replacement and has a longer service life.

[0070] Preferably, a positioning cavity 15 is provided on the side of the shell 10 where the first interface is located, and the first seal 80 is embedded in the positioning cavity 15, so that when the turntable 40 rotates, the first seal 80 will not rotate synchronously with the turntable 40, thereby ensuring the reliability of the extraction of body fluids and the collection of pathological specimens.

[0071] It is worth mentioning that one side of the first sealing member 80 is arranged in an arc shape, and the other side of the first sealing member 80 is arranged in a broken line shape, and two adjacent straight lines are transitioned through an arc.

[0072] In this embodiment, by setting one side of the first seal 80 as a fold line, on the one hand, the contact area between the side of the first seal 80 and the positioning cavity 15 is further increased, and on the other hand, it can 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, thereby ensuring the reliability of the extraction of body fluids and the collection of pathological specimens.

[0073] Preferably, a positioning recess 92 is provided on the second seal 90, and a positioning protrusion 16 is provided on the shell 10 on the same side as the second interface, wherein the concave-convex fit 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 sealing member 90 .

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

[0076] Preferably, a carrier 100 is further provided in the second penetration portion 42, and one end of the carrier 100 is used to mount the filter screen 70, wherein an inwardly concave gradient groove 93 is provided on the second sealing member 90, and the groove depth of the gradient groove 93 is gradually set, when the first penetration portion 41 is connected to the drainage channel, the end of the carrier 100 on which the filter screen 70 is loaded corresponds to the position of the deepest groove depth in the gradient groove 93, and at this time, the other end of the carrier 100 is located outside the second penetration portion 42, so that the entire The supporting member 100 is in a seesaw state. With the rotation of the turntable 40, one end of the supporting member 100 loaded with the filter screen 70 gradually corresponds to the position of the shallowest groove depth in the gradient groove 93. During this process, the other end of the supporting member 100 gradually falls back and enters the second through-portion 42. When the end of the supporting member 100 loaded with the filter screen contacts the plane where the gradient groove 93 on the second sealing member 90 is located, the two ends of the supporting member 100 are in the same horizontal plane and are both located in the second through-portion 42.

[0077] In this embodiment, by providing a carrier 100, and the carrier 100 cooperates with the gradient groove 93 on the second sealing member 90, when the carrier 100 corresponds to the position of the first notch 12, the carrier 100 is in a seesaw state, so that when taking out the filter mesh plate 70 that has collected the pathological specimens, it can be directly taken out synchronously with the carrier 100, which is convenient and reliable to operate. In addition, when collecting pathological specimens, the entire carrier 100 is completely buried in the second through-hole 42, and will not affect the rotation of the turntable 40.

[0078] In addition, the support member 100 is provided so that hospital personnel can remove the filter plate 70 without contact. In addition, the replacement of the filter plate 70 will not affect the doctor's operation of sucking out other debris in the patient's body.

[0079] It is further pointed out that a guide groove 44 is provided on each side of the second through portion 42 , and a lug is provided on the carrier 100 to engage with the guide groove 44 , wherein the lug can rotate in the guide groove 44 .

[0080] Further preferably, a counterweight 110 is provided on one end of the carrier 100 for loading the filter screen 70. By providing the counterweight 110, it is further ensured that when the end of the carrier 100 loaded with the filter screen 70 corresponds to the deepest position in the gradient groove 93, the entire carrier 100 is in a seesaw state.

[0081] 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.

[0082] 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.

[0083] 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 manual negative pressure specimen suction collector, characterized in that: include: A shell body, wherein an installation cavity is provided inside, and a first interface and a second interface connected to the installation cavity are provided on the shell body, wherein the first interface is connected to a body fluid feed pipe, and the second interface is connected to a body fluid discharge pipe, a body fluid drainage channel is formed by the body fluid feed pipe and the body fluid discharge pipe, and a first notch is provided on the same side of the shell body as the first interface; A rotating disk is located in the installation cavity, and a first through-portion and a second through-portion are provided on the rotating disk, and the axial direction of the first through-portion and the axial direction of the second through-portion are consistent with the axial direction of the rotating disk, wherein, through the rotation of the rotating disk, the first through-portion and the second through-portion are alternately corresponding to the positions of the drainage channel and the first notch; A handle, one end of which is located outside the housing, and the other end of which extends into the mounting cavity and is rotatably connected to a side of the housing provided with a second interface, and one end of which is rotatably connected to the housing is provided with a first transmission part; The rotating member is located in the installation cavity, one end of which is connected to the rotating disk, and the other end of which is connected to a side of the housing provided with a second interface, and a second transmission part matched with the first transmission part is provided on the rotating member, wherein the end of the rotating handle located outside the housing cooperates with the first transmission part to cause the rotating disk to rotate; The filter screen is detachably mounted in the second penetration portion to carry pathological specimens.

2. A manual negative pressure specimen suction collector according to claim 1, characterized in that: A second notch is provided on the side of the shell for the handle to reciprocate, and the two sides of the second notch form the limit positions of the handle when rotating, which are the first limit position and the second limit position respectively, and the space between the first limit position and the second limit position is the rotation space of the handle, wherein, when the side of the handle contacts the first limit position, the position of the first through-portion and the drainage channel, and the position of the second through-portion and the first notch correspond one to one respectively; when the side of the handle contacts the second limit position, the second through-portion corresponds to the position of the drainage channel, or a limiting recess is provided on the turntable, and a limiting convex is provided on the shell, wherein the rotation angle of the handle is controlled by the concave-convex cooperation between the limiting recess and the limiting convex.

3. A manual negative pressure specimen suction collector according to claim 1, characterized in that: There is meshing transmission between the first transmission part and the second transmission part, and the first transmission part is meshing teeth arranged on the lateral end surface of the handle, and the second transmission part is a gear.

4. A manual negative pressure specimen suction collector according to claim 1, characterized in that: A guiding inclined surface is arranged on the side wall of the second penetration portion, so that a gap is formed between the edge of the filter screen plate and the side wall of the second penetration portion.

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

6. A manual negative pressure specimen suction collector according to claim 5, characterized in that: A positioning cavity is provided on one side of the shell where the first interface is located, and the first seal is embedded in the positioning cavity, wherein one side of the first seal is arranged in an arc shape, the other side of the first seal is arranged in a broken line, and a circular arc transition is provided between two adjacent straight lines.

7. A manual negative pressure specimen suction collector according to claim 5, characterized in that: A positioning recess is provided on the second sealing member, and a positioning protrusion is provided on the housing at the same side as the second interface, wherein the positioning recess and the positioning protrusion are concave-convex matched.

8. A manual negative pressure specimen suction collector according to any one of claims 1 to 7, characterized in that: A supporting member is also arranged in the second penetration portion, and one end of the supporting member is used for installing a filter mesh plate, wherein an inwardly concave gradient groove is arranged on the second sealing member, and the groove depth of the gradient groove is gradually arranged. When the first penetration portion is connected with the drainage channel, one end of the supporting member on which the filter mesh plate is loaded corresponds to the position of the deepest groove in the gradient groove, and the other end of the supporting member is located outside the second penetration portion, so that the entire supporting member is in a seesaw state.

9. A manual negative pressure specimen suction collector according to claim 8, characterized in that: A guide groove is arranged on each side of the second penetration portion, and a lug which is engaged with the guide groove is arranged on the bearing member, wherein the lug can rotate in the guide groove.

10. The manual negative pressure specimen suction collector according to claim 8, characterized in that: A counterweight is arranged on one end of the carrier for loading the filter screen disc.

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