CN217448543U - Suction device - Google Patents

Abstract

The present application provides a suction device for sucking body fluid and separating foreign matters in the body fluid, comprising: suction pump subassembly, collection liquid bag, suction catheter, filter and syringe, the suction catheter the filter, suction pump subassembly and collection liquid bag connects gradually, the syringe is connected the suction catheter with between the filter, suction pump subassembly and/or the syringe is used for right the body fluid provides suction pressure, so that the body fluid flows through get into behind the suction catheter the filter, the body fluid in the filter with after the foreign matter separation, the warp suction pump subassembly gets into collection liquid bag. The technical problem that body fluid and foreign matters cannot be separated is solved.

Description

Suction device

Technical Field

The utility model relates to a suction technical field, in particular to suction device.

Background

In clinical applications in the medical industry, suction devices are commonly used in surgery to aspirate a patient's body fluids, such as blood (including hemorrhages), exudates, pus, etc., which often contain solid or semi-solid gelatinous foreign matter that is typically removed with the body fluid and separated from the body fluid for necessary observation and analysis. However, the existing suction device cannot separate body fluid from foreign matter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a suction device to solve the technical problem that can't separate body fluid and foreign matter.

The present application provides a suction device for sucking body fluid and separating foreign matters in the body fluid, comprising: the suction pump assembly and/or the injector are used for providing suction pressure for the body fluid so that the body fluid flows through the suction catheter and then enters the filter, and the body fluid is separated from the foreign matter in the filter and then enters the liquid collecting bag through the suction pump assembly.

Wherein, the suction device further comprises a first connecting pipe and a second connecting pipe, the first connecting pipe is connected between the suction catheter and the filter, the second connecting pipe is connected between the liquid collecting bag and the suction pump assembly, and the injector is connected on the first connecting pipe.

The suction device further comprises a tee joint, the tee joint is installed on the first connecting pipe, and the injector is connected to the first connecting pipe through the tee joint.

Wherein the syringe comprises a barrel and a piston disposed within the barrel, the piston moving within the barrel to generate a suction pressure provided to the body fluid.

The outer wall of the barrel is provided with a plurality of scale marks arranged at intervals.

And the distances between the adjacent scale marks are equal.

The cylinder comprises a first end and a second end opposite to the second end, the first end is close to the first connecting pipe, and the distance between the adjacent scale marks is gradually reduced in the direction from the first end to the second end.

The number of the syringes is multiple, and the syringes are arranged on the first connecting pipe at intervals.

Wherein the volumes of the barrels of at least two of the plurality of syringes are different.

The three-way connection device comprises a plurality of three-way connections, a plurality of injectors and a plurality of connecting pipes, wherein the three-way connections correspond to the injectors one to one, and each injector is connected to the first connecting pipe through one three-way connection.

To sum up, in this application, suction device is provided with the filter, can filter body fluid to separate body fluid and foreign matter, the foreign matter after the separation can carry out the analysis and observe, and the body fluid after the filtration can be in the storage of collection liquid bag. The technical problem that current suction equipment can't filter the body fluid with the separation foreign matter has been solved to this application. In addition, the suction pump assembly and the injector are further arranged, the suction pump assembly is used as a main suction pressure source, such as a main negative pressure source, the injector on the suction device can be used as a secondary suction pressure source, such as a secondary negative pressure source, when the volume of foreign matters in body fluid is large, and the instant large suction pressure is needed, or the suction speed needs to be increased, the injector can be operated to increase the extra suction pressure under the condition that the suction pump assembly does not stop working, and the suction efficiency and the suction success rate can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a suction device provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of another suction device provided in the embodiments of the present application.

Fig. 3 is a schematic structural diagram of a first filter provided in an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a second filter provided in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a third filter provided in an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a first filter membrane provided in an embodiment of the present disclosure.

FIG. 7 is a schematic structural diagram of a second filter membrane provided in an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a third filter membrane provided in an embodiment of the present application.

Fig. 9 is a first structural schematic diagram of a suction pump assembly provided in an embodiment of the present application.

Fig. 10 is a second structural schematic diagram of a suction pump assembly provided in an embodiment of the present application.

Fig. 11 is a schematic view of a first display mode of a display provided in an embodiment of the present application.

Fig. 12 is a schematic diagram of a second display mode of a display provided in an embodiment of the present application.

Fig. 13 is a schematic diagram illustrating a third display mode of a display provided in an embodiment of the present application.

Fig. 14 is a first schematic flow chart of a pumping method provided in an embodiment of the present application.

Fig. 15 is a second schematic flow chart of the pumping method provided in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, for the suction device, an end entering the body fluid is generally referred to as a "proximal end", and an end away from the body fluid after entering the body fluid is referred to as a "distal end" of the suction device, and the "proximal end" and the "distal end" of any component of the suction device are defined according to this principle.

Referring to fig. 1, the present invention provides a suction device for sucking body fluid and separating foreign matters from the body fluid, including: the suction pump assembly 1 is used for providing suction pressure for body fluid, so that the body fluid flows through the suction catheter and then enters the filter 3, and the body fluid is separated from foreign matters in the filter 3 and then enters the liquid collecting bag 2 through the suction pump assembly 1. It will be appreciated that the proximal end of the aspiration catheter is free for initial aspiration of bodily fluid and the distal end of the aspiration catheter is connected to the filter 3 for delivery of the aspirated bodily fluid into the filter 3. The suction pump assembly 1, which serves as a primary source of pressure, such as negative pressure, generates a continuous suction pressure, such as a negative suction force, to draw the body fluid through the suction catheter to the filter 3, where it is filtered and stored in the fluid collection bag 2. The foreign matter can be solid or semi-solid gel, the body fluid mixed with the foreign matter is filtered in the filter 3 after passing through the filter 3, and the filtered body fluid enters the liquid collecting bag 2 to be stored. The body fluid can be blood, exudate, ascites, fluid accumulation, sputum, mucus, pus or mixture thereof.

In this application, through setting up filter 3, can filter the body fluid to separate body fluid and foreign matter, the foreign matter after the separation can carry out the analysis and observe, and the body fluid after the filtration can be in the storage of collection liquid bag 2. The technical problem that current suction equipment can't filter the body fluid in order to separate the foreign matter has been solved in this application.

In a specific embodiment, the suction device further comprises a first connection tube 4 and a second connection tube 5, the first connection tube 4 is connected between the suction catheter and the filter 3, and the second connection tube 5 is connected between the liquid collection bag 2 and the suction pump assembly 1.

In this application, connect suction catheter and filter 3 through setting up first connecting pipe 4, collect liquid bag 2 and suction pump subassembly 1 are connected to second connecting pipe 5, have prolonged suction device's length, are convenient for place, and suction device can be convenient remove along with the patient, product convenient operation, and convenient fixed in suction device.

In a particular embodiment, the suction device further comprises a connection seat 6, the connection seat 6 being mounted at an end of the first connection tube 4 remote from the filter 3, the connection seat 6 being intended to connect a suction catheter to the first connection tube 4.

In this application, the connection of first connecting pipe 4 and attraction pipe can be convenient for in the setting of connecting seat 6, can be so that first connecting pipe 4 and attraction pipe connection performance are better, can not damage the link end portion of first connecting pipe 4 and attraction pipe.

In a particular embodiment, the suction device further comprises a power source 7 (fig. 9), the power source 7 being connected to the suction pump assembly 1 for powering the suction pump assembly 1. It will be appreciated that the power source 7 may be a rechargeable or non-rechargeable battery, such as a lithium cobalt oxide battery, a zinc manganese battery, a magnesium manganese battery, a lithium subcell, a lithium iron battery, or the like. As in the specific use, the power source 7 is selected as a rechargeable lithium cobalt oxide battery, and the power source 7 has stable performance without memory effect and relatively high energy density, and can meet the energy requirement of the suction pump assembly 1. The power source 7 may be disposed within the suction pump assembly 1 or disposed outside the suction pump assembly 1. In the present application, the power source 7 provides a source of energy for the suction pump assembly 1 such that the suction pump assembly 1 can continue to operate such that the suction pump assembly 1 can provide a continuous suction pressure, such as a negative suction force.

In a specific embodiment, the suction device further comprises a switch 8, and the switch 8 is arranged on the suction pump assembly 1 and is used for controlling the suction pump assembly 1 to be switched on or switched off. It is understood that the switch 8 may be a key switch 8, or may be an electronic switch 8. When the switch 8 is a mechanical switch 8 and it is desired to aspirate a body fluid, the mechanical switch 8 may be activated to cause the aspiration device to begin operation. The mechanical switch 8 may be a key switch 8 or a rotary switch 8, etc. When the switch 8 is an electronic switch 8 and the body fluid needs to be sucked, the electronic switch 8 can be activated by sensing to start the operation of the suction device. The electronic switch 8 may be a proximity switch 8, an opto-electronic switch 8, or the like.

Referring to fig. 2, the present invention also provides a suction device for sucking body fluid and separating foreign matters in the body fluid, including: the suction pump assembly 1 and/or the injector 9 are used for providing suction pressure for body fluid so that the body fluid flows through the suction catheter and then enters the filter 3, and the body fluid is separated from foreign matters in the filter 3 and then enters the liquid collecting bag 2 through the suction pump assembly 1.

In this application, suction device is provided with filter 3, can filter the body fluid to separate body fluid and foreign matter, the foreign matter after the separation can carry out the analysis and observe, and the body fluid after the filtration can be in collecting liquid bag 2 internal storages. The technical problem that current suction equipment can't filter the body fluid with the separation foreign matter has been solved to this application.

Moreover, the present application further provides the suction pump assembly 1 and the syringe 9, the suction pump assembly 1 can be used as a primary suction pressure source, for example, as a primary negative pressure source, the syringe 9 on the suction device can be used as a secondary suction pressure source, for example, as a secondary negative pressure source, when the volume of the foreign matter in the body fluid is large, and a momentarily large suction pressure is required, or the suction speed needs to be increased, the syringe 9 can be operated to increase an additional suction pressure without stopping the operation of the suction pump assembly 1, so as to improve the suction efficiency and the success rate of suction.

In a specific embodiment, the suction device further comprises a first connection tube 4 and a second connection tube 5, the first connection tube 4 is connected between the suction catheter and the filter 3, the second connection tube 5 is connected between the fluid collection bag 2 and the suction pump assembly 1, and the syringe 9 is connected to the first connection tube 4.

In this application, first connecting pipe 4 and second connecting pipe 5 have lengthened suction device's length, are convenient for place, and suction device can be convenient remove along with the patient, product convenient operation, and convenient in suction device's fixed. Moreover, syringe 9 of the present application is located on first connecting tube 4, and convenient setting, and syringe 9 is close to the suction catheter, is convenient for increase extra suction pressure fast.

In a particular embodiment, the suction device further comprises a tee 10, the tee 10 being mounted on the first connection tube 4, the syringe 9 being connected to the first connection tube 4 by the tee 10. It will be appreciated that where additional aspiration pressure is required from the syringe 9, the tee 10 provides another source of pressure and operation of the syringe 9 can provide additional aspiration pressure.

In this application, tee bend 10 has increased suction pressure source route, and tee bend 10 can conveniently install syringe 9, and then need great suction pressure in the twinkling of an eye, or need increase the condition of pumping speed, and operation syringe 9 increases extra suction pressure, can improve suction efficiency and suction success rate.

In one particular embodiment, the syringe 9 includes a barrel 91 and a piston 92, the piston 92 being disposed within the barrel 91, the piston 92 moving within the barrel 91 to generate the suction pressure provided to the body fluid. It will be appreciated that the suction pressure gradually increases during the withdrawal of the piston 92 from the cylinder 91.

In a specific embodiment, a plurality of spaced apart graduation marks 93 are provided on the outer wall of the cylinder 91.

In the present application, the scale 93 on the outer wall of the barrel 91 may indicate the distance the plunger 92 moves, and thus the suction pressure provided by the syringe 9.

In one particular embodiment, the distances between adjacent tick marks 93 are all equal. Therefore, the scale mark 93 can be conveniently manufactured.

In a specific embodiment, the cylinder 91 comprises a first end 911 and a second end 912 opposite to the second end 912, the first end 911 is close to the first connection pipe 4, and the distance between the adjacent graduation marks 93 is gradually reduced in the direction from the first end 911 to the second end 912. It will be appreciated that the distance between adjacent tick marks 93 is greater proximate the first end 911 and smaller proximate the second end 912.

In this way, during the extraction of the piston 92 from the cylinder 91, the suction pressure is not very high near the first end 911, the scale 93 between the greater distances can roughly indicate the suction pressure, and the suction pressure is greater near the second end 912, and the scale 93 between the smaller distances can accurately indicate the suction pressure. Therefore, according to the position of the scale mark 93 reached by the piston 92, the current suction pressure can be indicated as required, and the judgment basis of the suction state is provided for an operator.

In a specific embodiment, the injector 9 is plural, and the plural injectors 9 are provided at intervals on the first connecting tube 4. Thus, the plurality of syringes 9 can provide a larger instant suction pressure and a larger suction speed, and the suction efficiency and the suction success rate can be improved. It will be appreciated that multiple syringes 9 may be used simultaneously, or portions of multiple syringes 9 may be used simultaneously. If there are 5 syringes 9, 5 syringes 9 may be used simultaneously, or 3, 4, etc. may be used simultaneously.

In one particular embodiment, the volume of the barrel 91 of at least two syringes 9 of the plurality of syringes 9 is different. In this way, a plurality of syringes 9 can provide different suction pressure ranges, and a corresponding volume of syringe 9 can be selected at a desired suction pressure, which increases the flexibility of the suction device.

In a specific embodiment, the three-way joint 10 is plural, the plural three-way joints 10 correspond to the plural injectors 9 one by one, and each injector 9 is connected to the first connecting pipe 4 through one three-way joint 10. In this way, the provision of a plurality of tees 10 facilitates the connection of a plurality of syringes 9 to the first connecting tube 4.

The filter 3 will be described below. The filter 3 is used for filtering foreign substances in body fluid.

Referring to fig. 3, the filter 3 includes: casing 31 and filtration membrane 32, be formed with accommodation space 33 in the casing 31, be equipped with inlet 34 on the casing 31 and with the relative liquid outlet 35 that sets up of inlet 34, inlet 34 and liquid outlet 35 all communicate with accommodation space 33, filtration membrane 32 holds in accommodation space 33, and the block is at the inner peripheral surface of casing 31, and the body fluid is used for getting into accommodation space 33 from inlet 34, filters behind the foreign matter through filtration membrane 32, discharges from liquid outlet 35. It will be appreciated that the filter 3 is integrally formed as a sealed canister structure. To some extent, foreign matter accumulates by its own weight or by the potential energy of the body fluid flow, rather than being scattered. The collected foreign matters can reduce the blockage of the filtering membrane 32 to ensure the flowing performance of body fluid, and can also reduce the loss of suction pressure and improve the suction efficiency. Both inlet 34 and outlet 35 may be hose connections.

In this application, through set up filtration membrane 32 in casing 31, after the body fluid that contains the foreign matter got into the accommodation space 33 of filter 3, the body fluid flowed through filtration membrane 32, and the foreign matter filters on filtration membrane 32, and this has realized filtration membrane 32 to the filtration of foreign matter, and the foreign matter on filtration membrane 32 can take out and carry out the analysis and observe.

In a specific embodiment, the shell 31 includes a first sub-shell 311 and a second sub-shell 312, a first sub-space is formed in the first sub-shell 311, a second sub-space is formed in the second sub-shell 312, and the first sub-shell 311 is butted with the second sub-shell 312, so that the first sub-space is communicated with the second sub-space to form the accommodating space 33. It can be understood that the first sub-housing 311 is a front filter cover, the second sub-housing 312 is a rear filter cover, and the front filter cover and the rear filter cover can be fixed by screw connection, snap connection or press fit, which is convenient for an operator to disassemble the filter 3 to take out the filtered foreign matters for necessary observation and analysis. This scheme is optional to be connected with interference extrusion fit's mode for filtering the protecgulum and filtering the back lid, and it possesses to dismantle easily, and its structure can extrude each other under the pressure effect simultaneously, guarantees its leakproofness.

In this application, through setting up casing 31 as first subshell 311 and second subshell 312, conveniently set up first subspace in first subshell 311, conveniently set up second subspace in second subshell 312, accommodation space 33 can form through first subspace and second subspace intercommunication, and accommodation space 33's formation mode is convenient simple.

In a specific embodiment, the first sub-shell 311 includes a top wall 311a and a first peripheral wall 311b connected to the top wall 311a, the first peripheral wall 311b is connected to the top wall 311a to form a first sub-space, and the liquid inlet 34 is disposed on the top wall 311 a; the second sub-housing 312 comprises a bottom wall 312a and a second peripheral wall 312b connected with the bottom wall 312a, the second peripheral wall 312b is connected with the bottom wall 312a to form a second subspace, and the liquid outlet 35 is arranged on the bottom wall 312 a; the filter membrane 32 is provided on the inner surface of the second peripheral wall 312 b.

In the present application, the filter membrane 32 is disposed on the inner surface of the second peripheral wall 312b, that is, the filter membrane 32 is disposed on the inner surface of the second sub-shell 312, so that the filter membrane 32 is convenient to mount and replace, and the foreign matter filtered on the filter membrane 32 is convenient to take out.

Referring to fig. 4, in a specific embodiment, the filtering membrane 32 includes a first connecting end 321 and a second connecting end 322 opposite to the first connecting end 321, the filtering membrane 32 is disposed obliquely so that a distance between the first connecting end 321 and the top wall 311a is greater than a distance between the second connecting end 322 and the top wall 311a, the liquid inlet 34 is disposed eccentrically and is close to the first connecting end 321, and the liquid outlet 35 is disposed eccentrically and is close to the first connecting end 321.

It can be understood that, the filtration membrane 32 that the slope was arranged, under the combined action of body fluid flow and foreign matter gravitational potential energy, make the foreign matter gather at second link 322 more easily, reduce the hole jam to filtration membrane 32, effectively prevent the jam of a large amount of foreign matters to filtration membrane 32, can guarantee the total area of the hole of great unblock filtration membrane 32 simultaneously, reduce body fluid flow resistance, guarantee the suction effect. Moreover, since the liquid inlet 34 and the liquid outlet 35 are both close to the first connection end 321, and the first connection end 321 is close to the top wall 311a, when the body fluid containing the foreign matter enters the filter 3, the foreign matter is more likely to gather to the second connection end 322 toward the lower portion, and the body fluid directly passes through the first connection end 321 and is discharged from the liquid outlet 35. According to fluid dynamics, under the condition that the center line of the body fluid flow is far away from the center line of the foreign matter as far as possible, the resistance of the body fluid is relatively small, and the suction effect is effectively guaranteed. Therefore, the influence of the foreign matters on the body fluid flow can be reduced as much as possible, and the suction effect can be ensured.

Referring to fig. 5, in one embodiment, the filtering membrane 32 includes multiple layers of filtering net, the multiple layers of filtering net are spaced apart from each other, and the porosity of the multiple layers of filtering net gradually decreases from the liquid inlet 34 to the liquid outlet 35. It will be appreciated that the cross-sectional area of the individual holes of the filter screen decreases progressively in the direction from the inlet port 34 to the outlet port 35.

It can be understood that, when some needs filter the foreign matter that has relatively more bulky and tiny volume simultaneously, if adopt the individual layer filter screen, need compromise minimum volume foreign matter, the single hole sectional area of filter screen needs to be less than the sectional area of minimum volume foreign matter, because the sectional area of the hole of filter screen is less, can block up a large amount of holes when bulky foreign matter passes through, less foreign matter is more difficult to the gathering simultaneously, other holes are blockked up in the dispersion distribution under the body fluid flow effect, will further lead to the not sectional area reduction that blocks up the hole of single filter screen, will increase the resistance that the body fluid flows, influence suction effect.

In this application, the filter screen is the multilayer, and the porosity of multilayer filter screen reduces gradually, and body fluid gets into back in the filter 3 from inlet 34, and body fluid passes through the filter screen step by step, can filter the interception at front filter membrane 32 with the foreign matter of great volume, because the large granule foreign matter possesses better gathering nature, can guarantee that the front filter screen does not block up the total area in hole great, and the single pore cross sectional area of front filter membrane 32 is great simultaneously, and is less to the resistance that liquid is right. The rear layer filter screen only filters foreign matters with smaller volume, the blocked pores are relatively less, and the total area of the unblocked pores of the rear layer filter screen is relatively larger. Therefore, the multi-layer filter screen has a better filtering effect, and can bring lower liquid flow resistance to ensure the suction effect.

As shown in fig. 5, the filter screens are 2 layers, a first-stage filter screen 32a is close to the liquid inlet 34, a second-stage filter screen 32b is close to the liquid outlet 35, the porosity of the first-stage filter screen 32a is greater than that of the second-stage filter screen 32b, and the single-hole cross-sectional area of the first-stage filter screen 32a is greater than that of the second-stage filter screen 32 b. The two-stage filter screen can filter foreign matters with large volume and foreign matters with small volume, and can not block the filter screen, thereby bringing lower liquid flow resistance and ensuring the suction effect.

In a particular embodiment, the surface of the filter membrane 32 facing the liquid inlet 34 is provided with an anti-adhesion coating for preventing foreign objects from adhering to the filter membrane 32. In the application, the anti-adhesion coating can prevent the foreign bodies from being adhered to the filtering membrane 32, so that the foreign bodies can be gathered, and the foreign bodies can be prevented from blocking the pores of the filtering membrane 32 as far as possible.

In a specific embodiment, the filter 3 further comprises a squeeze ring 36, the squeeze ring 36 is fixed on the inner circumferential surface of the housing 31, and the peripheral edge of the filter membrane 32 is fixed on the squeeze ring 36. In the present application, the squeeze ring 36 is provided to stably fix the filtering membrane 32 in the filter 3.

In one particular embodiment, the porosity of the filtration membrane 32 is 30% to 90%. The porosity can effectively ensure the structural strength of the filtering membrane 32, so that the body fluid is filtered from the filtering membrane 32 quickly, the filtering efficiency is improved, and foreign matters can be left on the filtering membrane 32. Alternatively, the porosity may be 60-80%.

In a specific embodiment, the material of the filter membrane 32 is one or more of polyether sulphone resin (PES), Nylon (Nylon), Polytetrafluoroethylene (PTFE) and polypropylene (PP). Such as polyether sulphone resin (PES) or Polytetrafluoroethylene (PTFE) have hydrophobic or hydrophilic characteristics themselves or may be modified to hydrophilic or hydrophobic characteristics. It is understood that the material of the filter membrane 32 is selected to have specific characteristics according to the composition of the foreign matter to be filtered. For example, the filter membrane 32 may be made of a material having a hydrophilic or hydrophobic property selected according to the hydrophobic or hydrophilic property of the foreign matter. The material can further enable the foreign matters to be gathered by the gravity of the foreign matters or by the potential energy of the flowing of the body fluid, and not to be scattered and distributed.

In one embodiment, the structure of the filter membrane 32 may be a woven structure, a non-woven structure, or a flat cut, random shaped pore structure. If the filter membrane 32 is selected to be a cut pore structure, the pore shape may be a regular or irregular circle, polygon or any other shape. When the pore structure is circular A (figure 6), the circular pore structure has more stable shape characteristics, and under the condition of the same porosity, the circular membrane material has better structural strength and better tear resistance. The diameter of the circular pore is 0.001mm-2mm, also can be 0.1-1mm, this filter membrane 32 reduces the influence on the body fluid flow on the premise of guaranteeing the effectiveness of impurity filtration. When the pore structure is square B (fig. 7), the square pore structure can increase the porosity relative to the circular shape while taking into account the strength and the porosity. When the pore structure is the long strip C (fig. 8), the long strip can maximally improve the porosity and maximally reduce the influence on the body fluid flow.

The suction pump 12 assembly 1 will be described as follows.

Referring to fig. 9, the pump 12 assembly 1 includes: the suction pump 12, the display 13, the pressure sensor 14 and the controller 15 are all arranged in the casing 11, the pressure sensor 14, the suction pump 12 and the display 13 are all connected with the controller 15, the suction pump 12 comprises an inlet end 121 and an outlet end 122, the suction pump 12 is used for sucking body fluid from the inlet end 121 and discharging the body fluid from the outlet end 122, the pressure sensor 14 is arranged on the inlet end 121, the pressure sensor 14 is used for sensing the suction pressure of the suction pump 12 and transmitting a sensing signal to the controller 15, and the controller 15 controls the display 13 to display the suction pressure of the suction pump 12 according to the sensing signal. It is understood that the pressure sensor 14 may be a strain gauge pressure sensor 14, which can be hermetically sealed to isolate body fluid from the circuit portion, and has good waterproof property, excellent stability and reliability.

The suction pump 12 serves as the primary source of pressure for the application of power to draw body fluid, creating a continuous primary suction pressure, such as negative suction. The pressure sensor 14 transmits the sensed pressure of the suction pump 12 to the controller 15, the controller 15 controls the display 13 to display the suction pressure of the suction pump 12, and the suction pressure of the suction pump 12 displayed by the display 13 can feed back the suction state of the suction pump 12, such as whether suction is smooth currently, so as to facilitate the intuitive perception of an operator.

In a particular embodiment, the housing 11 is provided with a recess 11a, the recess 11a being adapted to receive the filter 3, the filter 3 being adapted to be connected to the inlet end 121 of the suction pump 12. The accommodation of the filter 3 by the recess 11a saves space, so that the volume of the suction device is small.

In one particular embodiment, aspiration pump 12 is a one-way pump for providing one-way flow of bodily fluids in the direction of inlet end 121 to outlet end 122. The suction pump 12 may be a diaphragm pump, a peristaltic pump, a centrifugal pump, a plunger pump, or other pump body that provides negative pressure. Such as a peristaltic pump or a diaphragm pump, which can provide a stable and sustained supply of negative pressure suction capability. Simultaneously, the working principle of the pump body only allows liquid to pass through in a single phase, liquid backflow is effectively prevented, the problem of secondary pollution in the pumping process is solved, the size of the pump body is further relatively small, and the requirement of overall portability is met.

Referring to fig. 10, in one embodiment, a check valve 134 is disposed on the inlet end 121, and the check valve 134 is used to control the one-way flow of the body fluid in the direction from the inlet end 121 to the outlet end 122. The check valve 134 may be a diaphragm check valve 134, a spring-loaded check valve 134, a swing check valve 134, or a gravity check valve 134. Such as diaphragm type check valve 134, it is high to pressure, such as negative pressure sensitivity, and relative control is effectual, simple structure, and the processing preparation of being convenient for is less to the liquid flow influence.

In the application, the one-way valve 134 is additionally arranged, so that the body fluid can be prevented from flowing back, and the secondary pollution can be further avoided in certain highly polluted body fluid.

Alternatively, the power source 7 may be provided within the suction pump 12 assembly 1, as shown in fig. 9. Therefore, the suction pump 12 assembly 1 is compact in overall structure and has good portability, the power source 7 is built in, extra plugging operation is not needed, corresponding suction operation can be performed by opening a package, and the use experience of a user is improved.

Alternatively, the power source 7 may be provided outside the suction pump 12 assembly 1, as shown in fig. 10. The power supply 7 is external, effectively avoids the power supply 7 to reveal the risk factor who brings, if when the power supply 7 is the battery, can avoid the battery to reveal the risk factor who brings, also can avoid the battery to deposit the in-process self-discharge, and the electric quantity reduces, to the influence of final suction effect. Moreover, the external battery can be repeatedly used, the usage amount of the battery is reduced, and the pollution of the battery for treating the environment is reduced.

Referring to fig. 11, in a specific embodiment, the display 13 is a display lamp panel 131, the display lamp panel 131 is provided with a plurality of indicator lights 132 arranged at intervals, when the suction pressure of the suction pump 12 increases, the number of the indicator lights 132 that are turned on increases, wherein the number of the indicator lights 132 that are turned on is used for representing the suction pressure of the suction pump 12. Optionally, the indicator light 132 is an LED light, and has the characteristics of high brightness, low energy consumption, simple structure, stability, reliability, and high resolution. Optionally, the indicator light 132 is a lamp bead.

In the present application, the number of the lighted indicator lights 132 can visually indicate the suction pressure of the suction pump 12, so as to provide the operator with the current suction pressure of the suction pump 12.

In a specific embodiment, the suction pressure of the suction pump 12 includes a plurality of pressure ranges connected in sequence, the number of the indicator lights 132 that are turned on corresponds to the plurality of pressure ranges, and the controller 15 is configured to control the number of the indicator lights 132 that are turned on according to the pressure range in which the current pressure of the suction pump 12 is located. If 5 pilot lamps 132 can be set up on display lamp panel 131, 5 pilot lamps 132 can indicate 6 kinds of states: a. 0 indicator light 132 is on to indicate that the power is not on currently; b. 1 indicator light 132 on may indicate a suction pressure of 0-20 KPa; c. 2 indicator lights 132 on may indicate a suction pressure of 20KPa-40 KPa; d. the illumination of 3 indicator lights 132 may indicate a suction pressure of 40KPa-60 KPa; e. 4 indicator lights 132 on may indicate a suction pressure of 60KPa to 80 KPa; f. the illumination of 5 indicator lights 132 may indicate a suction pressure of 80KPa-100 KPa. When 1 indicator light 132 is lighted, it can indicate that the pipeline is completely unobstructed, and there is no foreign matter in the body fluid, and at the same time, the viscosity of the body fluid is low, such as ascites, effusion, blood or mixture thereof, etc.; when the 2 indicator lights 132 are lighted, the pipeline is unobstructed, and the body fluid does not contain solid foreign matters but contains components with higher viscosity, such as pus, sputum, mucus or a mixture thereof; when the 3 indicator lights 132 are lighted, the pipeline is basically unobstructed, small particle foreign matters exist in the body fluid, and the particle diameter is smaller than half of the sectional area of the suction tube cavity; when the 4 indicator lights 132 are turned on, the pipeline is blocked, large particles of foreign matters exist in the body fluid, and the diameter of the foreign matters is larger than half of the sectional area of the suction tube cavity; when the 5 indicator lights 132 are turned on, the tube is blocked, the suction port is blocked by a foreign object in the body fluid, or the suction port sucks a tissue structure such as a wall of a human body organ, a fat layer wall or a blood vessel wall.

In this application, through setting up the one-to-one correspondence of the number that pilot lamp 132 lighted and pressure range, can judge current suction state more accurately according to the number that current pilot lamp 132 lighted to whether adjust the position for suction device provides the basis.

Referring to fig. 12, in one embodiment, the display 13 is an indicator light 132, and the illuminated area of the indicator light 132 gradually increases when the pressure of the body fluid increases, and the illuminated area of the indicator light 132 is used to indicate the suction pressure of the suction pump 12. It is understood that the illuminated area of the indicator light 132 increases in a gradient. Optionally, the indicator light 132 is a light bar.

In the present application, the area illuminated by the indicator light 132 can visually indicate the suction pressure of the suction pump 12, and thus provide the operator with the current suction pressure of the suction pump 12.

In a specific embodiment, the suction pressure of the suction pump 12 includes a plurality of pressure ranges connected in sequence, the lighting area of the indicator light 132 corresponds to the pressure ranges, and the controller 15 is configured to control the lighting area of the indicator light 132 according to the pressure range in which the current pressure of the suction pump 12 is located.

If 5 lighting areas can be provided on the indicator light 132, 5 lighting areas can indicate 6 states: a. the lighting area of 0 indicates that the computer is not started currently; b. the 20% lit area may represent a suction pressure of 0KPa to 20 KPa; c. the 40% lit area may represent a suction pressure of 20KPa to 40 KPa; d. the 60% lit area may represent a suction pressure of 40KPa-60 KPa; e. an 80% lit area may represent a suction pressure of 60KPa to 80 KPa; f. the 100% lit area may represent a suction pressure of 80KPa to 100 KPa. When the lighting area of 20 percent is lighted, the pipeline is completely unobstructed, no foreign matter exists in body fluid, and the viscosity of the body fluid is lower, such as ascites, effusion, blood or a mixture thereof and the like; when the lighting area is 40 percent, the pipeline is unobstructed, and the body fluid does not contain solid foreign matters but contains components with higher viscosity, such as pus, sputum, mucus or a mixture thereof; when 60% of the lighting area is lighted, the pipeline is basically unobstructed, small particle foreign matters exist in body fluid, and the particle diameter is smaller than half of the sectional area of the suction tube cavity; when 80% of the lighting area is lighted, the pipeline is blocked, large-particle foreign matters exist in body fluid, and the diameter of the foreign matters is larger than half of the sectional area of the suction pipe cavity; when the 100% lighting area is lighted, the pipeline is blocked, the suction opening part is blocked by foreign matters in body fluid, or the suction opening part sucks tissue structures, such as the wall of a human body organ, the wall of a fat layer or the wall of a blood vessel.

In this application, through setting up the one-to-one correspondence of the area that pilot lamp 132 lighted and pressure range, can judge current suction state according to the area that current pilot lamp 132 lighted more accurately to whether adjust for suction device's position provides the basis.

Referring to fig. 13, in a specific embodiment, the suction pressure of the suction pump 12 includes a plurality of pressure ranges connected in sequence, the lighting color of the indicator 132 corresponds to the pressure ranges one by one, the controller 15 is configured to control the display color of the indicator 132 according to the pressure range in which the current pressure of the suction pump 12 is located, and the lighting color of the indicator 132 is used to represent the suction pressure of the suction pump 12. It will be appreciated that by setting the colour change to indicate a change in pressure (relative air pressure), the colour change is more noticeable and easier to observe. The indicator light 132 may be a light bar or a light bead.

In this application, through setting up the one-to-one correspondence of the colour that pilot lamp 132 lighted and pressure range, can judge current suction state more accurately according to the colour that current pilot lamp 132 lighted to whether adjust for suction device's position provides the basis.

If the indicator light 132 can display 5 colors, the indicator light 132 can indicate 6 states: a. the no color indicating light 132 is illuminated to indicate that the power is not currently on; b. the indicator light 132 is illuminated red to indicate a suction pressure of 0-20 KPa; c. the indicator light 132 is illuminated orange to indicate a suction pressure of 20-40 KPa; d. the indicator light 132 is illuminated yellow to indicate a suction pressure of 40-60 KPa; e. the indicator light 132 is illuminated green to indicate a suction pressure of 60-80 KPa; f. the illumination of indicator light 132 in blue may indicate a suction pressure of 80KPa to 100 KPa. When the indicator light 132 is lighted red, it can indicate that the pipeline is completely unobstructed, and there is no foreign matter in the body fluid, and at the same time, the viscosity of the body fluid is low, such as ascites, effusion, blood or mixture thereof; when the indicator light 132 is turned on orange, the pipeline is unobstructed, and the body fluid does not contain solid foreign matters but contains components with higher viscosity, such as pus, sputum, mucus or a mixture thereof; when the indicator light 132 is turned on to be yellow, the pipeline is basically unobstructed, small-particle foreign matters exist in body fluid, and the particle diameter is smaller than half of the sectional area of the suction tube cavity; when the indicator light 132 is turned on green, the pipeline is blocked, large-particle foreign matters exist in body fluid, and the diameter of the foreign matters is larger than half of the sectional area of the suction pipe cavity; when the indicator light 132 is illuminated blue, the tubing is occluded, the suction port is occluded by a foreign object in the body fluid, or the suction port occludes tissue structures, such as the walls of a human body organ, adipose tissue walls, or blood vessel walls.

Referring to fig. 14, in addition to the above-mentioned suction device, the present invention also provides a suction method for sucking body fluid and separating foreign matters from the body fluid. The pumping method comprises the following steps:

s1, providing a suction device, wherein the suction device comprises: the suction pump assembly 1, the liquid collecting bag 2, the suction catheter and the filter 3 are sequentially connected;

and S2, controlling the suction pump assembly 1 to provide suction pressure to the body fluid, so that the body fluid flows through the suction catheter and enters the filter 3, and the body fluid is separated from foreign matters in the filter 3 and enters the liquid collecting bag 2 through the suction pump assembly 1.

The application discloses suction method filters the body fluid through setting up filter 3 to separate body fluid and foreign matter, the foreign matter after the separation can carry out the analysis and observe, and the body fluid after the filtration can be in collecting liquid bag 2 internal storages. The technical problem that body fluid can not be filtered to separate foreign matters is solved.

In a particular embodiment, the method of pumping further comprises:

the suction pressure on the suction device is displayed. It will be appreciated that the method is particularly directed to showing the pressure on the suction pump assembly 1.

In this application, through showing the suction pressure on the suction device, can feed back suction device's suction state, whether smooth and easy if can feed back present suction, perhaps whether the jam has taken place to whether the operator carries out the perception of directly perceiving, in order to confirm whether need adjust suction device's position, perhaps whether need wash suction device etc..

In a particular embodiment, the method of pumping further comprises:

and under the condition that the suction pressure is greater than or equal to the preset pressure, moving the suction position of the suction device. It will be appreciated that the suction position of the mobile suction device is primarily the position of the mobile suction catheter. The movement of the aspiration catheter may be a slight movement, such as the position of the aspiration catheter may be moved by 1mm, 2mm, etc.

And under the condition that the suction pressure on the moved suction device is less than the preset pressure within the preset time, continuously sucking the body fluid. It can be understood that, when the suction pressure is greater than or equal to the preset pressure, the suction pressure on the suction device is greater, and the suction process is not smooth; when the suction pressure is lower than the preset pressure, the suction pressure on the suction device is lower, and the suction process is smooth. The preset pressure can be understood as a reference for the smoothness of the pumping process. The preset pressure may be 60KPa, and of course, the preset pressure may also be 40KPa, 80KPa, etc., and the specific value of the preset pressure is not limited herein. The preset time may be 5s, 10s, and the like, and the preset time may also be other specific values, and the specific values of the preset time are not limited in the present application.

In this application, suction pressure on suction device more than or equal to the condition of predetermineeing pressure, remove suction device's suction position, in predetermineeing the time, when pressure on the suction device is less than predetermineeing pressure, continue to aspirate body fluid, this has realized when suction device suction is not smooth and easy, through adjusting suction device's position to make the suction process continue to go on, continue to take out the body fluid. The adjustment of the pumping process is simple and quick.

In a specific embodiment, the "suction pressure is equal to or greater than the preset pressure" includes: the suction device is attracted to the wall tissue carrying the body fluid. It is understood that the wall tissue may be vascular tissue carrying blood.

"the suction pressure on the suction device after the movement is less than the preset pressure for the preset time" includes:

the moved suction device is separated from the wall tissue such that the suction pressure on the suction device is less than the preset pressure. It is understood that when the suction position of the suction device is moved and the suction catheter of the suction device is separated from the wall tissue, the suction pressure on the suction device is less than the preset pressure. The suction pressure may be changed to a lower pressure in a shorter time, for example, may be decreased to less than a preset pressure in 1s, or 2 s.

In this application, through removing suction device's suction position for suction device's suction position and wall tissue separate, can reduce the suction pressure on the suction device, can make the suction process go on fast smoothly.

In a specific embodiment, the "suction pressure is equal to or greater than a preset pressure" includes:

the suction device sucks foreign matter, and the foreign matter blocks the suction duct. It is understood that the foreign matter is in the form of a semi-solid gel, and the foreign matter may be deformed.

"the suction pressure on the suction device after the movement is less than the preset pressure for the preset time" includes:

and in a preset time, the foreign body is deformed, and the deformed foreign body passes through the suction catheter, so that the suction pressure on the suction device is smaller than the preset pressure. It can be understood that the suction device sucks the semisolid and gelatinous foreign matter, the suction position of the suction device moves, the foreign matter deforms, and the deformed foreign matter can be slowly sucked into the suction conduit and then enters the filter 3. When the suction device sucks foreign matter into the filter 3, the suction pressure on the suction device is less than the preset pressure. The suction pressure may also be reduced to a lower pressure in a shorter time, for example, may be reduced to less than the preset pressure in 3s, or 4 s.

In this application, behind removal suction device's suction position, the foreign matter in the body fluid takes place deformation, and the foreign matter after the deformation can reduce the suction pressure on the suction device in can entering into suction device, can be so that the suction process is smooth and easy going on sooner.

In a particular embodiment, the method of pumping further comprises:

and stopping sucking the body fluid under the condition that the suction pressure on the moved suction device is greater than or equal to the preset pressure in the preset time. It is understood that the foreign matter is solid-like, completely blocks the suction catheter, and even if the suction position of the suction device is moved, the foreign matter cannot be deformed and cannot enter the suction device.

In this application, after removing suction device's suction position, the foreign matter in the body fluid is not out of shape, and the removal of suction device's suction position can not make the foreign matter enter into suction device in, this suction device that need withdraw from, to suction device clearance back, aspirates the body fluid again.

Referring to fig. 15, the present invention further provides a method for aspirating body fluid and separating foreign matter in the body fluid, including:

a1, providing a suction device. It will be appreciated that the suction device may be a suction device as described above. The suction device comprises: the suction pump assembly 1, the liquid collection bag 2, the suction tube and the filter 3 are connected in sequence, and the suction tube, the filter 3, the suction pump assembly 1 and the liquid collection bag 2 are connected in sequence. The suction device may also comprise a syringe 9.

And A2, controlling the suction device to suck the body fluid. It will be appreciated that the body fluid may be aspirated by the suction pump assembly 1, although the suction pump assembly 1 may also be controlled to aspirate body fluid in synchronism with the syringe 9.

A3, filtering the body fluid to separate the foreign matters in the body fluid from the body fluid. It will be appreciated that the present application may employ a suction device to filter bodily fluids, such as filter 3. This application can also be filtered the body fluid with the help of external filter equipment.

The application discloses suction method is through suction body fluid to filter the body fluid, can separate body fluid and foreign matter, and the foreign matter after the separation can carry out the analysis and observe, and the body fluid after the filtration can be in collecting liquid bag 2 internal storages. The technical problem that body fluid can not be filtered to separate foreign matters is solved.

In a particular embodiment, the method of pumping further comprises:

the suction pressure of the suction device is displayed. It will be appreciated that the pressure on the aspiration device may be displayed either on the aspiration pump set 1 or on the syringe 9, or on both the aspiration pump set 1 and the syringe 9 simultaneously.

In the application, by displaying the suction pressure on the suction pump assembly 1, the suction state of the suction device can be fed back, such as whether the suction is smooth at present or whether the blockage occurs, so that the operator can visually perceive the blockage, and can determine whether the position of the suction device needs to be adjusted or not and whether the auxiliary pressure source needs to be added for suction or not, and if the auxiliary pressure source needs to be added for suction, the injector 9 needs to be added for suction or not.

In a specific embodiment, "displaying the suction pressure of the suction device" includes:

setting a corresponding relation between a plurality of pressure ranges and a plurality of display parameters, wherein different display parameters are used for representing different pressure ranges;

and displaying corresponding display parameters according to the pressure range of the current pressure of the suction device.

In this application, through setting up different pressure ranges that show parameter display, can demonstrate current suction device's suction pressure more directly perceivedly to the operator learns current suction state.

In a particular embodiment, the display parameters include the number of lights 132 illuminated; "displaying the corresponding display parameters according to the pressure range in which the current pressure of the suction device is located" includes:

depending on the pressure range in which the current pressure of the suction device is, a corresponding number of indicator lights 132 are illuminated. In this embodiment, the current pressure can be determined according to the number of the lighted indicator lights 132, so as to determine the pumping state, and provide a basis for the pumping device to adjust the position.

In a particular embodiment, the display parameters include the illuminated area of the indicator light 132; "displaying the corresponding display parameters according to the pressure range in which the current pressure of the suction device is located" includes:

depending on the pressure range in which the current pressure of the suction device is, the corresponding area of the indicator light 132 is illuminated.

The present embodiment can accurately determine the current pumping status according to the lighting area of the indicator 132, and provide a basis for adjusting the position of the pumping device.

In a particular embodiment, the display parameters include the lighting color of the indicator light 132; "displaying the corresponding display parameter according to the pressure range in which the current pressure of the suction device is located" includes:

depending on the pressure range in which the current pressure of the suction device is, the corresponding color of the indicator light 132 is illuminated.

The present embodiment can accurately determine the current pumping status according to the lighting color of the current indicator 132, and provide a basis for adjusting the position of the pumping device.

In a specific embodiment, "controlling the suction device to aspirate a body fluid" includes:

the body fluid is aspirated using a primary pressure source. It will be appreciated that in the case of a smoother pumping process, the body fluid is pumped using the primary pressure source. The primary pressure source may be the suction pump assembly 1.

In a specific embodiment, "controlling the suction device to aspirate a body fluid" includes:

in the event that the suction pressure of the primary pressure source does not meet the suction requirements, a secondary pressure source is employed to assist in the aspiration of the bodily fluid. It will be appreciated that in situations where the aspiration process is not smooth, or where an increase in instantaneous aspiration force is desired, or where an increase in aspiration rate is desired, a secondary pressure source may be used to assist aspiration. The auxiliary pressure source may be a syringe 9.

In a specific embodiment, "controlling the suction device to aspirate the bodily fluid" includes:

under the condition that the suction pressure is greater than or equal to the preset pressure, the suction position of the suction device is moved;

and under the condition that the suction pressure on the moved suction device is less than the preset pressure within the preset time, continuously sucking the body fluid.

In this application, suction pressure on suction device is more than or equal to and predetermines under the condition of pressure, removes suction device's suction position, and in the time of predetermineeing, when the last pressure of suction device is less than and predetermines pressure, continues to aspirate body fluid, and this has realized when suction device suction is not smooth and easy, through adjusting suction device's position to make the suction process continue to go on, continue to take out body fluid. The adjustment of the pumping process is simple and quick.

In a specific embodiment, "controlling the suction device to aspirate a body fluid" includes:

under the condition that the suction pressure is greater than or equal to the preset pressure, the suction position of the suction device is moved;

and stopping sucking the body fluid under the condition that the suction pressure on the moved suction device is greater than or equal to the preset pressure in the preset time. It is understood that the foreign matter is solid-like, completely blocks the suction catheter, and even if the suction position of the suction device is moved, the foreign matter cannot be deformed and cannot enter the suction device.

In this application, after removing suction device's suction position, the foreign matter in the body fluid is not out of shape, and the removal of suction device's suction position can not make the foreign matter enter into suction device in, this suction device that need withdraw from, to suction device clearance back, aspirate the body fluid again.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. A suction device for suctioning a body fluid and separating foreign matter in the body fluid, comprising: suction pump subassembly, collection liquid bag, suction catheter, filter and syringe, the suction catheter the filter, suction pump subassembly and collection liquid bag connects gradually, the syringe is connected the suction catheter with between the filter, suction pump subassembly and/or the syringe is used for right the body fluid provides suction pressure, so that the body fluid flows through get into behind the suction catheter the filter, the body fluid in the filter with after the foreign matter separation, the warp suction pump subassembly gets into collection liquid bag.

2. The suctioning device according to claim 1, further comprising a first connection tube and a second connection tube, the first connection tube being connected between the suction catheter and the filter, the second connection tube being connected between the liquid collection bag and the suction pump assembly, and the syringe being connected to the first connection tube.

3. The suction device, as set forth in claim 2, further comprising a tee fitting on the first connecting tube, through which the syringe is connected to the first connecting tube.

4. The suction device as claimed in claim 1, wherein the syringe comprises a barrel and a piston disposed within the barrel, the piston moving within the barrel to generate suction pressure to the body fluid.

5. The extraction apparatus according to claim 4 wherein the outer wall of the barrel is provided with a plurality of spaced apart graduations.

6. The suction device as claimed in claim 5, wherein the distances between adjacent graduations are all equal.

7. The suctioning device according to claim 5, wherein the cylinder includes a first end and a second end disposed opposite to the first end, the first end being close to the first connecting pipe, and a distance between the adjacent graduation marks gradually decreases in a direction from the first end to the second end.

8. The suction device as claimed in claim 3, wherein the syringe is plural, and plural syringes are provided at intervals on the first connection tube.

9. The aspiration device of claim 8, wherein the volumes of the barrels of at least two of the plurality of syringes are different.

10. The suction device as claimed in claim 8, wherein said three-way is plural, plural said three-way correspond to plural said syringes one by one, and each said syringe is connected to said first connecting pipe through one said three-way.

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