A drainage bottle assembly and a negative pressure drainage suction machine using the same

Abstract

The application relates to the technical field of medical devices, in particular to a drainage bottle assembly and a negative pressure drainage suction machine adopting the same, wherein the drainage bottle assembly comprises a drainage bag and a drainage bottle; the drainage bag comprises a cover plate and a bottom plate and is connected through a bag body; a supporting plate and a first spring are arranged in the drainage bottle; the drainage bag is used for cooperating with the drainage bottle; when the drainage bag cooperates with the drainage bottle, the bottom plate is fixed with the supporting plate, the cover plate is fixed at a bottle opening of the drainage bottle, and the first spring provides elastic force to make the drainage bag in an unfolded state; when the drainage bottle assembly is in a drainage operation state, the first spring is in a non-maximum stretching state; the drainage bag is further connected with a suction tube; and the suction tube is used for sucking drainage liquid in a human body into the drainage bag. The drainage bottle assembly and the negative pressure drainage suction machine adopting the same can reduce the damage risk of a tissue of a part of a patient to be sucked by the suction tube when the negative pressure provided by a negative pressure source is suddenly increased.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a drainage bottle assembly and a negative pressure drainage and suction machine using the assembly. Background Technology

[0002] A negative pressure drainage and aspiration machine is a medical device that uses the principle of negative pressure to aspirate and remove substances such as secretions, blood, and tissue fluid from the human body. Typically, a negative pressure drainage and aspiration machine includes a negative pressure source, a drainage bottle, and a suction tube. The negative pressure source draws air out of the drainage bottle to create negative pressure, which creates a pressure difference between the air pressure inside the drainage bottle and the external atmospheric pressure, thereby drawing liquids or small solid substances into the bottle.

[0003] However, when the pressure regulating valve of the negative pressure source malfunctions or fails, it may cause an abnormal increase in the negative pressure provided by the negative pressure source, or even a sudden increase in negative pressure. When the negative pressure increases suddenly, the suction force of the suction tube will be too strong, which may damage the tissue of the patient being suctioned. For example, excessive suction force may directly damage fragile granulation tissue, nerves or blood vessels, resulting in pain, bleeding, or even delayed wound healing.

[0004] Therefore, how to reduce the risk of damage to the tissues of the patient being suctioned by the suction tube when the negative pressure provided by the negative pressure source increases suddenly is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings of current negative pressure drainage and aspiration machines in practical use, and to provide a drainage bottle assembly and a negative pressure drainage and aspiration machine using this assembly, so as to reduce the risk of damage to the tissues of the patient being aspirated by the suction tube when the negative pressure provided by the negative pressure source suddenly increases.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] A drainage bottle assembly includes a drainage bag and a drainage bottle. The drainage bag includes a cover plate and a bottom plate, which are connected by a bag body. The cover plate, bag body, and bottom plate form a cavity structure for containing drainage fluid. The drainage bottle contains a support plate and a first spring. The first spring is elastic, with one end connected to the bottom of the drainage bottle and the other end connected to the support plate. The support plate is movable along the length of the drainage bottle.

[0008] The drainage bag is used in conjunction with the drainage bottle. When the drainage bag is in conjunction with the drainage bottle, the bottom plate is fixed to the support plate, the cover plate is fixed at the mouth of the drainage bottle, and the first spring provides elastic force to make the drainage bag unfolded.

[0009] When the drainage bottle assembly is in a drainage operation state, the first spring is in a non-maximum stretched state.

[0010] As a prior technical solution of the present application, the drainage bag is further connected with a suction tube, which is used to suck the drainage liquid in the human body into the drainage bag.

[0011] As a prior technical solution of the present application, the drainage bottle comprises a drainage bottle body and an adjusting base, the adjusting base is threadedly connected with the drainage bottle body, the adjusting base is located at the bottom of the drainage bottle, and the first spring is connected with the adjusting base; the adjusting base is rotated relative to the drainage bottle body so as to move the adjusting base relative to the drainage bottle body along the length direction of the drainage bottle.

[0012] As a prior technical solution of the present application, the supporting plate comprises a supporting plate one part and a supporting plate two part, the supporting plate one part is rotationally connected with the supporting plate two part, the supporting plate two part is connected with the first spring, the supporting plate one part is used to be fixed with the bottom plate, the supporting plate one part is provided with a first sliding block, the sidewall of the drainage bottle is provided with a first sliding groove, the length direction of the first sliding groove is the same as the length direction of the drainage bottle, the first sliding block is clamped in the first sliding groove, and the first sliding block can move along the length direction of the first sliding groove.

[0013] As a prior technical solution of the present application, the bag body is made of non-elastic material, when the drainage bag cooperates with the drainage bottle, the drainage bag can be in a completely unfolded state, and the drainage bag can be opened to be a straight cylinder.

[0014] As a prior technical solution of the present application, the drainage bag is connected with a negative pressure tube, one end of the negative pressure tube is communicated with the drainage bag, and the other end is connected with a negative pressure machine.

[0015] The drainage bottle is provided with a cylinder, the length direction of the cylinder is the same as the length direction of the drainage bottle, the supporting plate is connected with a piston rod, a piston on the piston rod is located in the cylinder, the piston divides the cylinder into a first chamber and a second chamber, the first chamber is communicated with a first air bag, the second chamber is communicated with a second air bag, the first chamber is communicated with a first air outlet, the second chamber is communicated with a second air outlet, and the opening size of the first air outlet and the second air outlet is adjustable.

[0016] The supporting plate is provided with a hand holding part, the hand holding part is used for an operator to hold, so that the supporting plate can reciprocate along the length direction of the drainage bottle.

[0017] The drainage bottle assembly further comprises a clamping device, the clamping device comprises a clamping seat, a first clamping plate and a second clamping plate, the clamping seat is used for clamping the negative pressure tube, the first air bag is used for pushing the first clamping plate to move after being inflated, so that the first clamping plate cooperates with the clamping seat to extrude the negative pressure tube, the second air bag is used for pushing the second clamping plate to move after being inflated, so that the second clamping plate cooperates with the clamping seat to extrude the negative pressure tube, and the cross-sectional area of the flow channel in the extruded negative pressure tube is reduced.

[0018] As a prior technical solution of the application, the drainage bottle is provided with a limiting block, the limiting block is used for limiting the movement range of the supporting plate relative to the drainage bottle, so that when the supporting plate moves relative to the drainage bottle, the drainage liquid in the drainage bag will not be sucked into the negative pressure tube when the drainage liquid collected by the drainage bag does not reach the maximum collection amount.

[0019] As a prior technical solution of the application, the clamping seat is further provided with a first reset spring and a second reset spring, the first reset spring and the second reset spring both have elasticity, the first reset spring corresponds to the first clamping plate, the second reset spring corresponds to the second clamping plate, the first reset spring is used for providing elastic force to restore the first clamping plate to the initial state when the first air bag is not inflated, and the second reset spring is used for providing elastic force to restore the second clamping plate to the initial state when the second air bag is not inflated.

[0020] When the first clamping plate is in the initial state, the first clamping plate cancels the extrusion effect on the negative pressure tube.

[0021] When the second clamping plate is in the initial state, the second clamping plate cancels the extrusion effect on the negative pressure tube.

[0022] As a prior technical solution of the application, the first air outlet is rotationally connected with a first adjusting knob, the first adjusting knob is provided with a first shielding part, the area of the first air outlet shielded by the first shielding part is controlled by rotating the first adjusting knob, and the opening size of the first air outlet is controlled in this way.

[0023] The second air outlet is rotationally connected with a second adjusting knob, the second adjusting knob is provided with a second shielding part, the area of the second air outlet shielded by the second shielding part is controlled by rotating the second adjusting knob, and the opening size of the second air outlet is controlled in this way.

[0024] As a prior technical solution of the application, the bottom plate of the drainage bag is provided with a clamping groove, the supporting plate is provided with a clasp, and the clasp is used for cooperating with the clamping groove to fix the bottom plate and the supporting plate.

[0025] The application further provides a negative pressure drainage suction machine comprising the drainage bottle assembly.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. In the solution of the present application, by providing a supporting plate and a first spring, when the drainage bag cooperates with the drainage bottle, the cover plate on the drainage bag is fixed at the bottle mouth of the drainage bottle, the bottom plate of the drainage bag is fixed to the supporting plate, and the spring provides an elastic force to pull the drainage bag, so that the drainage bag is in an unfolded state. When the negative pressure source provides a negative pressure to form a negative pressure environment in the drainage bag, and the negative pressure provided by the negative pressure source is within the normal working range, the spring provides an elastic force to keep the drainage bag in a stable shape, that is, the drainage bag can be prevented from suddenly collapsing in this negative pressure environment, and at this time the first spring is not in the maximum stretched state. When the pressure regulating valve of the negative pressure source fails or malfunctions, resulting in an abnormal increase in the negative pressure provided by the negative pressure source, at this time the negative pressure provided by the negative pressure source suddenly rises. Under the action of the first spring, the deformation amount of the first spring increases, which can further reduce the unfolded degree of the drainage bag, so that the space inside the drainage bag is reduced. Furthermore, the reduced space inside the drainage bag can resist the suddenly rising negative pressure of the negative pressure source, thereby preventing the negative pressure inside the drainage bag from suddenly rising, thus preventing the suction force of the suction tube from suddenly increasing, and further reducing the risk of damage to the tissue of the part of the patient being attracted by the suction tube;

[0028] At the same time, when the drainage bag is not cooperating with the drainage bottle, the separately stored drainage bag can be in a stored state, that is, the bag body is in a folded state, and the cover plate on the drainage bag is close to its bottom plate, and the drainage bag can be folded into a disc-shaped structure, which can reduce the space occupied by the drainage bag, thus facilitating the transportation or storage of the drainage bag;

[0029] 2. By providing a drainage bottle body and an adjusting base, when the adjusting base rotates relative to the drainage bottle body, the position of the adjusting base in the length direction of the drainage bottle can be adjusted, so as to facilitate adjusting the deformation amount of the first spring when the drainage bag is in an unfolded state, and thus facilitate adjusting the relationship between the reduction amount of the space inside the drainage bag and the sudden increase amount when the negative pressure provided by the negative pressure source suddenly rises, thereby further improving the flexibility of the drainage bottle assembly of the present application during use;

[0030] 3. Making the bag body made of a non-elastic material can prevent the bag body from being stretched by itself, which is convenient for pulling the bottom plate of the drainage bag to make the drainage bag in a fully unfolded state. When the negative pressure provided by the negative pressure source suddenly increases, due to the stable shape of the bag body, it is more conducive to the adjusting base and the first spring to control the movement of the bottom plate on the drainage bag and the change of the space inside the drainage bag, and can improve the sensitivity of the adjusting base and the first spring to control the movement of the bottom plate on the drainage bag and the change of the space inside the drainage bag;

[0031] 4. The support plate moves along the length direction of the drainage bottle synchronously with the movement of the piston rod, specifically, one part of the support plate is connected with the piston rod, the first chamber is located above the second chamber, when the pressure regulating valve of the negative pressure source fails or malfunctions to cause the negative pressure provided by the negative pressure source to increase suddenly, the space in the drainage bag can be reduced, the deformation amount of the first spring increases, and the support plate moves upward, that is, the support plate moves towards the cover plate, at this time, the piston rod moves upward along with the support plate, the space in the first chamber is reduced, on the basis that the opening sizes of the first gas outlet and the second gas outlet are adjustable, by adjusting the sizes of the two gas outlets, the gas in the first chamber can be difficult to be completely discharged from the first gas outlet in this case, at this time, part of the gas in the first chamber flows into the first air bag to inflate the first air bag, after the first air bag is inflated, the first clamping plate can be moved and can reach the degree of cooperation with the clamping seat to extrude the negative pressure tube, and the cross-sectional area of the flow channel in the extruded negative pressure tube is reduced, thereby increasing the resistance of the gas flow in the negative pressure tube, and further weakening the negative pressure effect of the negative pressure machine on the drainage bag, so as to further reduce the risk of damage to the tissue of the part of the patient attracted by the suction tube in this case;

[0032] At the same time, when the suction tube is blocked, the hand-held part can be manually controlled to move, so that the hand-held part drives the support plate to move along the length direction of the drainage bottle pair to reciprocate quickly, so that the piston reciprocates along the length direction of the cylinder, when the space in the first chamber is reduced under the condition that the opening of the first gas outlet and the second gas outlet is small, part of the gas in the first chamber flows to the first air bag, when the space in the second chamber is reduced, part of the gas in the second chamber flows to the second air bag, so that the first air bag and the second air bag can be inflated alternately, so that the negative pressure tube is clamped by the first clamping plate or the second clamping plate alternately, so that the negative pressure tube is in a state of being extruded in most of the time when the hand-held part is quickly moved along the length direction of the drainage bottle, so as to increase the resistance of the gas flowing through the negative pressure tube, so that the gas is more likely to flow in the suction tube, so that the suction tube is more likely to be unblocked, and the unblocking efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of one of the embodiments of the drainage bottle assembly of the present application;

[0034] Figure 2 It is a structural schematic diagram of the drainage bag in one of the embodiments of the drainage bottle assembly of the present application;

[0035] Figure 3 It is a structural schematic diagram of the adjustment base in one of the embodiments of the drainage bottle assembly of the present application;

[0036] Figure 4 Structure diagram of the structure at the barrel and the clamping device in one of the embodiments of the drainage bottle assembly of the present application;

[0037] Figure 5 Structure diagram of the structure at the clamping device in one of the embodiments of the drainage bottle assembly of the present application;

[0038] Figure 6 Structure diagram of the first adjusting knob and the second adjusting knob in one of the embodiments of the drainage bottle assembly of the present application;

[0039] Figure 7 Structure diagram of the structure at the clamping device in one of the embodiments of the drainage bottle assembly of the present application;

[0040] In the figure, 1 is a drainage bag, 2 is a drainage bottle, 3 is a cover plate, 4 is a bottom plate, 5 is a bag body, 6 is a supporting plate, 7 is a first spring, 8 is a suction tube, 9 is a drainage bottle body, 10 is an adjusting base, 11 is a first part of the supporting plate, 12 is a second part of the supporting plate, 13 is a first sliding block, 14 is a first sliding groove, 15 is a negative pressure tube, 16 is a barrel, 17 is a piston rod, 18 is a piston, 19 is a first cavity, 20 is a second cavity, 21 is a first air bag, 22 is a second air bag, 23 is a first air outlet, 24 is a second air outlet, 25 is a hand-held part, 26 is a clamping device, 27 is a clamping seat, 28 is a first clamping plate, 29 is a second clamping plate, 30 is a limiting block, 31 is a first return spring, 32 is a second return spring, 33 is a first adjusting knob, 34 is a first shielding part, 35 is a second adjusting knob, 36 is a second shielding part, 37 is a clamping groove, and 38 is a clamping buckle. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0042] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but merely represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0043] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0044] It should be noted that similar reference numerals and letters refer to like items in the accompanying drawings, and once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, or the orientation or positional relationship commonly understood by those skilled in the art, such terms are only for the convenience of describing the application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] Embodiment one: the drainage bottle assembly provided by the embodiment, see Figures 1-5 and Figure 7 As shown, it comprises a drainage bag 1 and a drainage bottle 2, the drainage bag 1 comprises a cover plate 3 and a bottom plate 4, the cover plate 3 and the bottom plate 4 are connected through a bag body 5, the cover plate 3, the bag body 5 and the bottom plate 4 form a cavity structure for containing drainage liquid; the drainage bottle 2 is provided with a supporting plate 6 and a first spring 7, the first spring 7 has elasticity, one end of the first spring 7 is connected with the bottom of the drainage bottle 2, the other end is connected with the supporting plate 6, the supporting plate 6 can move along the length direction of the drainage bottle 2;

[0047] The drainage bag 1 is used to cooperate with the drainage bottle 2, when the drainage bag 1 cooperates with the drainage bottle 2, the bottom plate 4 is fixed with the supporting plate 6, the cover plate 3 is fixed at the bottle mouth of the drainage bottle 2, the first spring 7 provides elastic force to make the drainage bag 1 in an unfolded state;

[0048] When the drainage bottle assembly is in a drainage operation state, the first spring 7 is in a non-maximum stretched state.

[0049] As a preferred embodiment, on the basis of the above-mentioned mode, further, the drainage bag 1 is further connected with a suction tube 8, the suction tube 8 is used to suck the drainage liquid in the human body into the drainage bag 1.

[0050] In the present application, by setting the supporting plate 6 and the first spring 7, when the drainage bag 1 is matched with the drainage bottle 2, the cover plate 3 on the drainage bag 1 is fixed at the bottle mouth of the drainage bottle 2, the bottom plate 4 of the drainage bag 1 is fixed with the supporting plate 6, and the spring provides elastic force to pull the drainage bag 1, so that the drainage bag 1 is in an unfolded state. When the negative pressure source provides negative pressure to form a negative pressure environment in the drainage bag 1, and the negative pressure provided by the negative pressure source is in a normal working range, the spring provides elastic force to maintain the stable shape of the drainage bag 1, that is, the drainage bag 1 can avoid sudden deflation under the negative pressure environment, and at this time the first spring 7 is in a non-maximum stretched state. When the pressure regulating valve of the negative pressure source fails or malfunctions to cause the negative pressure provided by the negative pressure source to abnormally rise, the deformation amount of the first spring 7 increases under the action of the first spring 7, which can further reduce the unfolding degree of the drainage bag 1, so that the space in the drainage bag 1 is reduced, and the reduced space in the drainage bag 1 can resist the negative pressure of the suddenly rising negative pressure source, thereby avoiding the sudden rise of the negative pressure in the drainage bag 1, so as to avoid the sudden increase of the suction force of the suction tube 8, thereby avoiding the excessive suction force of the suction tube 8, and further reducing the damage risk of the tissue of the part of the patient being sucked by the suction tube 8;

[0051] At the same time, when the drainage bag 1 is not matched with the drainage bottle 2, the separately stored drainage bag 1 can be in a storage state, that is, the bag body 5 is in a folded state, the cover plate 3 on the drainage bag 1 is close to the bottom plate 4, and the drainage bag 1 can be folded into a disc-shaped structure, so that the space occupied by the drainage bag 1 is reduced, thereby facilitating the transportation or storage of the drainage bag 1.

[0052] Furthermore, the cover plate 3 can be fixed to the bottle mouth of the drainage bottle 2 in an interference fit, so that the cover plate 3 or the bottle mouth of the drainage bottle 2 generates a clamping force through elastic deformation, so that the cover plate 3 is fixed to the bottle mouth of the drainage bottle 2. At the same time, after pulling the cover plate 3 with great force, the cover plate 3 can be separated from the bottle mouth of the drainage bottle 2, and during the operation of the negative pressure machine, the cover plate 3 will not be separated from the bottle mouth of the drainage bottle 2 without being pulled by a person.

[0053] As a preferred embodiment, on the basis of the above-mentioned mode, further, the drainage bottle 2 comprises a drainage bottle body 9 and an adjusting base 10, the adjusting base 10 is threadedly connected with the drainage bottle body 9, the adjusting base 10 is located at the bottom of the drainage bottle 2, and the first spring 7 is connected with the adjusting base 10. By rotating the adjusting base 10 relative to the drainage bottle body 9, the adjusting base 10 moves relative to the drainage bottle body 9 along the length direction of the drainage bottle 2.

[0054] Further, by setting the drainage bottle body 9 and the adjusting base 10, when the adjusting base 10 is rotated relative to the drainage bottle body 9, the position of the adjusting base 10 along the length direction of the drainage bottle 2 can be adjusted, thereby facilitating the adjustment of the deformation amount of the first spring 7 when the drainage bag 1 is in the unfolded state, thereby facilitating the adjustment of the relationship between the space reduction amount of the drainage bag 1 and the sudden increase amount of the negative pressure provided by the negative pressure source when the sudden increase of the negative pressure occurs, thereby further improving the flexibility of the drainage bottle assembly of the present application when in use.

[0055] As a preferred embodiment, on the basis of the above-mentioned mode, further, the supporting plate 6 comprises a supporting plate one part 11 and a supporting plate two part 12, the supporting plate one part 11 is rotationally connected with the supporting plate two part 12, the supporting plate two part 12 is connected with the first spring 7, the supporting plate one part 11 is used to be fixed with the bottom plate 4, the supporting plate one part 11 is provided with a first sliding block 13, the sidewall of the drainage bottle 2 is provided with a first sliding groove 14, the length direction of the first sliding groove 14 is the same as the length direction of the drainage bottle 2, the first sliding block 13 is clamped in the first sliding groove 14, and the first sliding block 13 can move along the length direction of the first sliding groove 14.

[0056] Further, by setting the supporting plate one part 11 and the supporting plate two part 12, under the action of the first sliding block 13 and the first sliding groove 14, the supporting plate one part 11 cannot rotate, when the adjusting base 10 is rotated to make the supporting plate one part 11 rotate with the adjusting base 10, the supporting plate one part 11 can only move along the length direction of the drainage bottle 2, thereby restricting the movement direction of the supporting plate one part 11, thereby facilitating the movement of the bottom plate 4 of the drainage bag 1 along the length direction of the drainage bottle 2, thereby avoiding the twisting of the bag body 5 of the drainage bag 1 when the bottom plate 4 moves with the supporting plate one part 11, so as to keep the drainage bag 1 in a non-twisted state during use, thereby improving the stability of the shape of the drainage bag 1.

[0057] Further, in the present application, the sidewall of the supporting plate one part 11 is attached to the sidewall of the drainage bottle 2, when the drainage bag 1 is in a completely unfolded state, the outer wall of the bag body 5 is attached to the sidewall of the drainage bottle 2, and the sidewall of the drainage bottle 2 is provided with a plurality of fine holes penetrating the inner and outer walls thereof, so as to discharge the gas between the bag body 5 and the sidewall of the drainage bottle 2.

[0058] As a preferred embodiment, on the basis of the above-mentioned mode, further, the bag body 5 is made of a non-elastic material, when the drainage bag 1 is matched with the drainage bottle 2, the drainage bag 1 can be in a completely unfolded state, and the drainage bag 1 can be stretched to be a straight cylinder.

[0059] Further, the bag body 5 is made of non-elastic material, which can avoid the bag body 5 from being elongated due to pulling, so as to facilitate the drainage bag 1 to be in a fully unfolded state when the bottom plate 4 of the drainage bag 1 is pulled, and the bag body 5 is stable in shape when the negative pressure provided by the negative pressure source is abnormally high, which is more conducive to adjusting the movement of the base 10 and the first spring 7 to the bottom plate 4 of the drainage bag 1 and the change of the space in the drainage bag 1, and can improve the sensitivity of the adjustment of the movement of the base 10 and the first spring 7 to the bottom plate 4 of the drainage bag 1 and the change of the space in the drainage bag 1.

[0060] Embodiment two: on the basis of the technical scheme of embodiment one, further, referring to Figures 1-7 As shown in the figure, the drainage bag 1 is connected with a negative pressure pipe 15, one end of the negative pressure pipe 15 is communicated with the drainage bag 1, and the other end is connected with a negative pressure machine;

[0061] The drainage bottle 2 is provided with a cylinder 16, the length direction of the cylinder 16 is the same as the length direction of the drainage bottle 2, the supporting plate 6 is connected with a piston rod 17, a piston 18 on the piston rod 17 is located in the cylinder 16, the piston 18 divides the cylinder 16 into a first chamber 19 and a second chamber 20, the first chamber 19 is communicated with a first air bag 21, the second chamber 20 is communicated with a second air bag 22, and the first chamber 19 is communicated with a first air outlet 23, and the second chamber 20 is communicated with a second air outlet 24, the opening size of the first air outlet 23 and the second air outlet 24 is adjustable;

[0062] The supporting plate 6 is provided with a hand-held part 25, the hand-held part 25 is used for the operator to hold, so that the supporting plate 6 can reciprocate along the length direction of the drainage bottle 2;

[0063] The drainage bottle assembly further comprises a clamping device 26, the clamping device 26 comprises a clamping seat 27, a first clamping plate 28 and a second clamping plate 29, the clamping seat 27 is used for clamping the negative pressure pipe 15, the first air bag 21 is used for pushing the first clamping plate 28 to move after being inflated, so that the first clamping plate 28 cooperates with the clamping seat 27 to extrude the negative pressure pipe 15, the second air bag 22 is used for pushing the second clamping plate 29 to move after being inflated, so that the second clamping plate 29 cooperates with the clamping seat 27 to extrude the negative pressure pipe 15, and the cross-sectional area of the flow channel in the extruded negative pressure pipe 15 is smaller.

[0064] Further, the movement of the supporting plate 6 along the length direction of the drainage bottle 2 is synchronous with the movement of the piston rod 17. Specifically, the supporting plate part 11 is connected with the piston rod 17, and the first chamber 19 is located above the second chamber 20. When the pressure regulating valve of the negative pressure source fails or malfunctions to cause the negative pressure provided by the negative pressure source to suddenly increase, the space in the drainage bag 1 can be reduced, and the deformation amount of the first spring 7 increases, and the supporting plate 6 moves upward, that is, the supporting plate 6 moves towards the cover plate 3. At this time, the piston rod 17 moves upward along with the supporting plate 6, so that the space of the first chamber 19 is reduced. On the basis that the opening sizes of the first gas outlet 23 and the second gas outlet 24 are adjustable, by adjusting the sizes of the two gas outlets, the gas in the first chamber 19 can be difficult to completely discharge from the first gas outlet 23 in this case. At this time, part of the gas in the first chamber 19 flows into the first air bag 21, so as to inflate the first air bag 21. After the first air bag 21 is inflated, it can push the first clamping plate 28 to move, and can reach the degree that the first clamping plate 28 cooperates with the clamping seat 27 to extrude the negative pressure tube 15, and makes the cross-sectional area of the flow channel in the extruded negative pressure tube 15 smaller, thereby increasing the resistance of the gas flowing in the negative pressure tube 15, and further weakening the negative pressure effect of the negative pressure machine on the drainage bag 1. In this way, in this case, the risk of damage to the tissue of the part of the patient attracted by the suction tube 8 is further reduced.

[0065] At the same time, when the suction tube 8 is blocked, the hand-held part 25 can be manually controlled to move, so as to drive the supporting plate 6 to quickly reciprocate along the length direction of the drainage bottle 2, so that the piston 18 reciprocates along the length direction of the cylinder body 16. When the space of the first chamber 19 is reduced under the condition that the opening sizes of the first gas outlet 23 and the second gas outlet 24 are small, part of the gas in the first chamber 19 flows to the first air bag 21, and part of the gas in the second chamber 20 flows to the second air bag 22 when the space of the second chamber 20 is reduced. In this way, the first air bag 21 and the second air bag 22 can be inflated alternately, so that the negative pressure tube 15 is clamped by the first clamping plate 28 or the second clamping plate 29 alternately. In this way, when the hand-held part 25 is quickly reciprocated along the length direction of the drainage bottle 2, the space in the drainage bag 1 can be quickly changed, and the negative pressure tube 15 can be in a squeezed state in most of the time, so as to increase the resistance of the gas flowing through the negative pressure tube 15, and make the gas more easily flow in the suction tube 8, so as to more easily unblock the suction tube 8, and improve the unblocking efficiency.

[0066] As a preferred implementation, on the basis of the above-mentioned mode, further, the drainage bottle 2 is provided with a limiting block 30, the limiting block 30 is used for limiting the moving range of the supporting plate 6 relative to the drainage bottle 2, so that when the supporting plate 6 moves relative to the drainage bottle 2, the drainage liquid in the drainage bag 1 will not be sucked into the negative pressure tube 15 when the drainage liquid collected by the drainage bag 1 does not reach the maximum collection amount.

[0067] Further, by setting the limiting block 30, the moving range of the supporting plate 6 relative to the drainage bottle 2 is limited, so that the drainage liquid in the drainage bag 1 will not be sucked into the negative pressure tube 15, which can avoid damaging the negative pressure machine.

[0068] As a preferred implementation, on the basis of the above-mentioned mode, further, the clamping seat 27 is further provided with a first reset spring 31 and a second reset spring 32, the first reset spring 31 and the second reset spring 32 are both elastic, the first reset spring 31 corresponds to the first clamping plate 28, the second reset spring 32 corresponds to the second clamping plate 29, the first reset spring 31 is used for providing elastic force to make the first clamping plate 28 return to the initial state when the first air bag 21 is not inflated, and the second reset spring 32 is used for providing elastic force to make the second clamping plate 29 return to the initial state when the second air bag 22 is not inflated.

[0069] When the first clamping plate 28 is in the initial state, the first clamping plate 28 cancels the extrusion effect on the negative pressure tube 15.

[0070] When the second clamping plate 29 is in the initial state, the second clamping plate 29 cancels the extrusion effect on the negative pressure tube 15.

[0071] Further, by setting the first reset spring 31 and the second reset spring 32, when the first air bag 21 or the second air bag 22 is not inflated, the corresponding first clamping plate 28 or the second clamping plate 29 is more conducive to return to the initial state.

[0072] As a preferred implementation, on the basis of the above-mentioned mode, further, the first air outlet 23 is rotatably connected with a first adjusting knob 33, the first adjusting knob 33 is provided with a first shielding part 34, by rotating the first adjusting knob 33, the area of the first air outlet 23 shielded by the first shielding part 34 is controlled, so as to control the opening size of the first air outlet 23.

[0073] The second air outlet 24 is rotatably connected with a second adjusting knob 35, the second adjusting knob 35 is provided with a second shielding part 36, by rotating the second adjusting knob 35, the area of the second air outlet 24 shielded by the second shielding part 36 is controlled, so as to control the opening size of the second air outlet 24.

[0074] Further, by setting the first adjusting knob 33 and the second adjusting knob 35, the convenience of adjusting the opening size of the first air outlet 23 or the opening size of the second air outlet 24 is further improved; when adjusting the size of the first air outlet 23 or the second air outlet 24, the purpose of adjusting the size of the air outlet can be achieved by adjusting the shielding area of the first shielding part 34 or the second shielding part 36 to the first air outlet 23 or the second air outlet 24.

[0075] As a preferred embodiment, on the basis of the above-mentioned mode, further, the bottom plate 4 of the drainage bag 1 is provided with a clamping groove 37, and the supporting plate 6 is provided with a buckle 38, which is used for cooperating with the clamping groove 37 to fix the bottom plate 4 and the supporting plate 6.

[0076] Further, by setting the clamping groove 37 and the buckle 38, when the buckle 38 cooperates with the clamping groove 37, the bottom plate 4 and the supporting plate 6 can be fixed, so as to improve the stability of the fixation of the bottom plate 4 and the supporting plate 6. Specifically, the buckle 38 is arranged on the first supporting plate 6; meanwhile, the buckle 38 and the clamping groove 37 can be separated, so as to facilitate the separation of the bottom plate 4 and the supporting plate 6, thereby improving the convenience of disassembling the drainage bag 1. Moreover, the specific structure of the buckle 38 and the clamping groove 37 is the prior art, which will not be described here.

[0077] In addition, the drainage bag 1 of the present application is a small or medium capacity type drainage bag 1. When the drainage liquid in the drainage bag 1 does not exceed the maximum capacity, if the negative pressure machine suddenly provides a negative pressure due to the failure or malfunction of the pressure regulating valve, the drainage bottle assembly can still work normally, that is, the supporting plate 6 and the first spring 7 can always adjust the space in the drainage bag 1 according to the suddenly increased negative pressure. Preferably, the maximum capacity of the drainage bag 1 can be 500-1500ml, and further preferably, the maximum capacity of the drainage bag 1 can be 600ml.

[0078] Embodiment three: the present embodiment also provides a negative pressure drainage suction machine, which comprises the drainage bottle assembly as described above, and the drainage bottle assembly is shown in the drainage bottle assembly in Figure 1 .

[0079] The above embodiments are only used to illustrate the present application and not to limit the technical solutions described in the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present application; and all technical solutions and improvements without departing from the spirit and scope of the present application are all included in the scope of the claims of the present application.

Claims

1. A drainage bottle assembly, characterized in that: The device includes a drainage bag and a drainage bottle. The drainage bag includes a cover plate and a bottom plate, which are connected by a bag body. The cover plate, bag body, and bottom plate form a cavity structure for containing drainage fluid. The drainage bottle is provided with a support plate and a first spring. The first spring is elastic, with one end connected to the bottom of the drainage bottle and the other end connected to the support plate. The support plate can move along the length of the drainage bottle. The drainage bag is used in conjunction with the drainage bottle. When the drainage bag is in conjunction with the drainage bottle, the bottom plate is fixed to the support plate, the cover plate is fixed to the mouth of the drainage bottle, and the first spring provides elastic force to make the drainage bag unfolded. The first spring provides elastic force to make the drainage bag maintain a stable shape, that is, it can prevent the drainage bag from collapsing suddenly under the negative pressure environment. When the drainage bottle assembly is in the drainage operation state, the first spring is in a non-maximum stretched state.

2. The drainage bottle assembly as described in claim 1, characterized in that: The drainage bag is also connected to a suction tube, which is used to draw drainage fluid from the body into the drainage bag.

3. The drainage bottle assembly as described in claim 2, characterized in that: The drainage bottle includes a drainage bottle body and an adjusting base. The adjusting base is threadedly connected to the drainage bottle body and is located at the bottom of the drainage bottle. The first spring is connected to the adjusting base. By rotating the adjusting base relative to the drainage bottle body, the adjusting base can move relative to the drainage bottle body along the length direction of the drainage bottle.

4. The drainage bottle assembly as described in claim 3, characterized in that: The support plate includes a support plate part and a support plate part, the support plate part and the support plate part are rotatably connected, the support plate part is connected to a first spring, the support plate part is used to fix to the base plate, the support plate part is provided with a first slider, the side wall of the drainage bottle is provided with a first groove, the length direction of the first groove is in the same direction as the length direction of the drainage bottle, the first slider is stuck in the first groove, and the first slider can move along the length direction of the first groove.

5. A drainage bottle assembly as described in claim 4, characterized in that: The bag is made of a non-elastic material. When the drainage bag is used with the drainage bottle, the drainage bag can be fully expanded and can be stretched into a straight cylinder.

6. A drainage bottle assembly as described in claim 5, characterized in that: The drainage bag is connected to a negative pressure tube, one end of which is connected to the drainage bag and the other end is connected to a negative pressure machine; The drainage bottle is provided with a cylindrical body, the length direction of the cylindrical body is in the same direction as the length direction of the drainage bottle, the support plate is connected to a piston rod, the piston on the piston rod is located inside the cylindrical body, the piston divides the cylindrical body into a first chamber and a second chamber, the first chamber is connected to a first air bladder, the second chamber is connected to a second air bladder, the first chamber is connected to a first air outlet, the second chamber is connected to a second air outlet, and the opening size of the first air outlet and the second air outlet is adjustable; The support plate is provided with a handle for the operator to hold, so that the support plate can reciprocate along the length of the drainage bottle. The drainage bottle assembly also includes a clamping device, which includes a clamping seat, a first clamping plate, and a second clamping plate. The clamping seat is used to hold the negative pressure tube. After the first airbag is inflated, it is used to push the first clamping plate to move so that the first clamping plate cooperates with the clamping seat to squeeze the negative pressure tube. After the second airbag is inflated, it is used to push the second clamping plate to move so that the second clamping plate cooperates with the clamping seat to squeeze the negative pressure tube. After being squeezed, the cross-sectional area of ​​the flow channel in the negative pressure tube becomes smaller.

7. A drainage bottle assembly as described in claim 6, characterized in that: The drainage bottle is equipped with a limiting block, which is used to limit the range of movement of the support plate relative to the drainage bottle, so that when the support plate moves relative to the drainage bottle, the drainage fluid in the drainage bag will not be sucked into the negative pressure tube if the drainage fluid collected in the drainage bag has not reached the maximum collection volume.

8. A drainage bottle assembly as described in claim 7, characterized in that: The clamping seat is also provided with a first return spring and a second return spring. Both the first return spring and the second return spring are elastic. The first return spring corresponds to the first clamping plate, and the second return spring corresponds to the second clamping plate. The first return spring is used to provide elastic force to restore the first clamping plate to its initial state when the first airbag is not inflated. The second return spring is used to provide elastic force to restore the second clamping plate to its initial state when the second airbag is not inflated. When the first clamping plate is in its initial state, the first clamping plate cancels the squeezing effect on the negative pressure tube; When the second clamp is in its initial state, the second clamp cancels the squeezing effect on the negative pressure tube.

9. A drainage bottle assembly as described in claim 8, characterized in that: A first adjustment knob is rotatably connected to the first air outlet. The first adjustment knob is provided with a first blocking part. By rotating the first adjustment knob, the area of ​​the first air outlet blocked by the first blocking part can be controlled, thereby controlling the opening size of the first air outlet. A second adjustment knob is rotatably connected to the second air outlet. The second adjustment knob is provided with a second blocking part. By rotating the second adjustment knob, the area of ​​the second air outlet blocked by the second blocking part can be controlled, thereby controlling the opening size of the second air outlet. The drainage bag has a slot on its bottom plate and a buckle on its support plate. The buckle is used to engage with the slot to fix the bottom plate and the support plate.

10. A negative pressure drainage and suction device, characterized in that: Includes the drainage bottle assembly as described in any one of claims 1-9.

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