CN109331235B

CN109331235B - Medical automatic drainage device

Info

Publication number: CN109331235B
Application number: CN201811134995.5A
Authority: CN
Inventors: 赵亮; 王才丰
Original assignee: Individual
Current assignee: Zhao Liang
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-11-27
Anticipated expiration: 2038-09-28
Also published as: CN112156243A; CN109331235A; CN112023138A

Abstract

The invention relates to the field of medical instruments and discloses a medical automatic drainage device, which consists of a bracket component, a weighing type suspension support component, a drainage adjusting component, a controller and a power supply part, wherein the weighing type suspension support component, the drainage adjusting component, the controller and the power supply part are supported by the bracket component; the weight-measuring type suspension support assembly can provide support for the drainage bag and feed back a weight signal reflecting the weight change state of the accumulated liquid to the controller; the drainage adjusting component can extrude the drainage tube in different modes to adjust the drainage state; the controller can regulate and control the working state of the drainage regulating component based on the acquired weight signal, a preset drainage mode and drainage parameters; this medical automatic drainage device adopts intelligent design, uses the automatic control that can realize drainage at regular time, ration drainage and constant speed drainage with current conventional drainage subassembly cooperation, has improved the security and the stability of drainage operation, and it has two kinds of drainage modes of ordinary pressure drainage and negative pressure drainage, can satisfy most clinical drainage needs, has wide application prospect clinically.

Description

Medical automatic drainage device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical automatic drainage device capable of automatically controlling a drainage process.

Background

Under normal conditions, a small amount of liquid is in the chest cavity and the abdominal cavity of a human body, so that the visceral organs in the cavity are lubricated, and if the liquid amount in the cavity is increased beyond a normal physiological range under a pathological condition, a disease such as hydrothorax and ascites can be caused. The causes of the abdominal dropsy and the pleural effusion are many and are very common clinical symptoms, and although the abdominal dropsy and the pleural effusion are only one sign, a large amount of the abdominal dropsy and the pleural effusion can cause a series of complications and are not beneficial to treatment of the causes, and even can endanger life in severe cases. Therefore, in cases with a large amount of peritoneal and pleural effusion, drainage of the effusion must be performed first in clinical treatment.

In the clinical operation process of draining a large amount of effusion, the clinical parameters such as daily drainage times, each drainage quantity, drainage speed and the like are required according to the state of illness of a case, in the actual clinical operation, the clinical parameters in the drainage process are generally realized by artificial subjective control of medical care personnel or family members of a patient, and the current artificial control mode has certain disadvantages, on one hand, the drainage process is not performed according to the expected mode of a doctor due to misunderstanding or negligence of the operating personnel and the like in oral delivery of medical advice, discomfort and injury are brought to the patient due to improper drainage, even the life of the patient is threatened, on the other hand, the real-time drainage quantity and the drainage speed are judged by artificial observation in the drainage process, the error is large, the drainage effect is difficult to guarantee, and simultaneously, the current control mode obviously increases the burden of medical staff and family members of patients.

The drainage bag is a relatively cheap medical article, is the best choice as a terminal container in clinical hydrops drainage, but can only be applicable to conventional hydrothorax drainage operation under normal pressure, but can not be applicable to negative pressure drainage, and if negative pressure drainage is carried out, a water-sealed bottle with a higher price than the drainage bag is usually needed, so that a certain economic burden is brought to a patient.

Disclosure of Invention

The invention aims to provide a medical automatic drainage device which adopts an intelligent design, can be matched with the existing drainage bag and a drainage tube for use to realize normal-pressure drainage and negative-pressure drainage, and can automatically control each drainage process according to preset drainage starting time, single drainage quantity, drainage speed and other drainage parameters.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a medical automatic drainage device, comprising:

the bracket component comprises a base, a vertical column which is supported by the base and extends vertically, and a setting plate which is supported by the vertical column, positioned above the base and positioned at the front side of the vertical column;

the weighing type suspension support assembly is supported by the placing plate, a weighing sensor is arranged in the weighing type suspension support assembly, and a suspension part is arranged at the lower end of the weighing type suspension support assembly; the weight-measuring type suspension support assembly is used for providing unique support for the drainage bag and enabling the drainage bag to suspend below the placement plate, the height of the drainage bag can be adjusted by the weight-measuring type suspension support assembly, and the weighing sensor outputs a weight signal capable of reflecting the weight change state of accumulated liquid in the drainage bag;

the drainage adjusting component comprises a concave seat, a central wheel, a roller, a cam and a motor device; the concave seat is arranged at the front side of the placing plate and is in a cylindrical cavity shape, and the bottom of the concave seat is provided with a shaft seat; the rear side of the central wheel is provided with a wheel shaft matched with the shaft seat, so that the central wheel is positioned in the concave seat and can only rotate around the central shaft, the side wall of the central wheel is provided with a roller groove, and the central wheel and the wheel shaft are provided with shaft holes; an annular gap is formed between the concave seat and the central wheel, an introducing hole and an extracting groove which are communicated with the side wall of the concave seat are formed in the placing plate, the introducing hole and the extracting groove can guide the drainage tube to enter the annular gap and lead the drainage tube out after the drainage tube is screwed for more than one circle and less than two circles in the annular gap, the cross section of the introducing hole is circular, the cross section of the extracting groove is U-shaped, and a groove opening on the front side of the extracting groove is exposed on the front side of the placing plate; the roller is supported by a roller frame to enable central shafts of the roller and the central wheel to be always parallel, the roller frame is movably connected with the central wheel to enable the roller to move into the annular gap from the roller groove, the roller frame is connected with an elastic piece to automatically reset the roller into the roller groove, a guide wheel is additionally arranged on the roller frame, the guide wheel is positioned on the front side of the roller, and rotating shafts of the guide wheel and the roller are parallel; the cam is positioned on the front side of the central wheel and is fixedly connected with a main shaft, and the main shaft penetrates through the shaft hole and is in transmission connection with a motor device fixed on the mounting plate; in the continuous forward rotation process of the cam, the roller is firstly enabled to be far away from the central wheel by continuously pushing the guide wheel through the outer contour until the roller and the side wall of the concave seat extrude the drainage tube to a blocking state, then the roller and the central wheel are driven by the cam to rotate together, the roller performs revolution motion on the drainage tube which is rolled in the annular gap all the time through self rotation, and the fluid in the drainage tube is driven to continuously flow towards the direction of the drainage bag; the cam can reset the roller into the roller groove through reverse rotation;

the controller is fixed on the placing plate, and a setting key and a display screen are arranged on the front side of the controller; the setting key is used for inputting a drainage mode, drainage parameters and a startup and shutdown instruction of each drainage into the controller, the drainage mode comprises normal-pressure drainage and negative-pressure drainage, the drainage parameters comprise drainage starting time, effusion weight drained in unit time in the drainage process, namely drainage speed, and effusion weight drained in single drainage, namely single drainage amount; the controller can acquire a weight signal continuously fed back by the weighing sensor in real time, and the real-time drainage speed and the single real-time drainage quantity are calculated according to the weight signal; the controller can adjust the starting, stopping, steering, rotating speed and rotating angle of the cam rotation based on the control of the motor device; in the negative pressure drainage mode, the controller enables the cam to continuously rotate in the positive direction, the roller drives fluid in the drainage tube to continuously flow towards the direction of the drainage bag to achieve negative pressure drainage, and the controller regulates and controls the starting, stopping and rotating speed of the rotation of the cam based on the real-time drainage speed, the single real-time drainage quantity and preset drainage parameters to achieve timing drainage, constant-speed drainage and quantitative drainage; in the normal-pressure drainage mode, normal-pressure drainage is realized based on a siphon effect, the controller enables the cam to rotate at a low speed, and the steering and rotating angles of the cam are regulated and controlled based on the real-time drainage speed, the single real-time drainage quantity and preset drainage parameters, namely the extrusion degree of the rollers and the side wall of the recess on the drainage tube is regulated, and the timed drainage, the constant-speed drainage and the quantitative drainage are realized; after the controller receives a shutdown instruction, the cam is reversely rotated, and shutdown is executed after the roller is reset into the roller groove; the display screen is used for displaying the data information held by the palm in the controller;

and the power supply part is arranged on the mounting plate, consists of a storage battery and a plurality of voltage transformation modules and is used for providing working current for the elements in the weight-measuring type suspension assembly, the drainage regulating assembly and the controller.

The use method and the working principle of the medical automatic drainage device are as follows:

the medical automatic drainage device is placed on the ground or a platform, the upper end of a drainage bag is fixed on a suspension part, so that the drainage bag is suspended above a base, and if normal-pressure drainage is carried out, the drainage bag is required to be lower than a drainage source; the drainage tube penetrates through the introduction hole to enter the annular gap, the drainage tube is extended in the annular gap in a spiral mode for more than one circle and less than two circles and then is led out from the leading-out groove, the lower end of the drainage tube is connected with the drainage bag, the height of the drainage bag is adjusted by using the weight-measuring type hanging component, the part of the drainage tube, which is positioned between the leading-out groove and the drainage bag, is in a natural extension state, the front end of the drainage tube is communicated with a chamber to be drained of a patient and is fixed according to the conventional drainage operation, the medical automatic drainage device is adjusted to a starting state by using a set key, the drainage mode and the drainage parameters are preset in the controller by using the set key according to clinical requirements, and then the early preparation; then, in a negative pressure drainage mode, the controller enables the cam to continuously rotate in the positive direction, the roller drives fluid in the drainage tube to continuously flow towards the direction of the drainage bag, the accumulated fluid is forced to flow into the drainage bag by a human body, namely negative pressure drainage is realized, the controller regulates and controls the starting, stopping and rotating speed of the rotation of the cam based on the real-time drainage speed, the single real-time drainage quantity and preset drainage parameters, and then timing drainage, constant-speed drainage and quantitative drainage can be realized; in the normal pressure drainage mode, can realize the siphon effect based on the siphon effect, the controller makes the cam low-speed rotatory to turn to, the rotation angle of cam is regulated and control based on real-time drainage speed, single real-time drainage volume and preset drainage parameter, makes roll and centre wheel keep away from or be close to, adjusts the roll promptly and the extrusion degree of dimple lateral wall to the drainage tube, can realize regularly drainage, constant speed drainage and ration drainage from this.

This medical automatic drainage device has following beneficial effect:

the medical automatic drainage device adopts an intelligent design, can be used by being matched with the conventional drainage tube and the drainage bag clinically, can be compatible with two working modes of normal-pressure drainage and negative-pressure drainage, can automatically control the whole drainage operation according to preset drainage parameters after presetting drainage parameters such as initial time of each drainage, single drainage quantity, drainage speed of each drainage and the like, realizes automatic intelligent drainage with timing, quantification and constant speed, greatly reduces the work burden of medical workers because no human interference is needed in the drainage process, avoids the situation that the drainage cannot be carried out according to an expected mode due to negligence or improper operation, improves the safety and stability of the clinical liquid drainage operation, and fully ensures the drainage effect; the medical automatic drainage device controls the drainage quantity and the drainage speed based on the coordination of the sensing device, the controller and the electric system, and compared with the manual observation and control in the prior art, the medical automatic drainage device is more accurate in operation and control, so that the drainage effect is further ensured; the medical automatic drainage device realizes the adjustment of the drainage speed and the generation of the drainage negative pressure based on the extrusion of different modes of the roller on the drainage tube, ensures the sealing property of a hydrops drainage pipeline, and ensures the absolute isolation of the hydrops and the medical automatic drainage device, and is safe and sanitary; meanwhile, the drainage adjusting assembly adopts scientific and ingenious structural design, the center wheel has the functions of limiting the drainage tube, arranging the roller and the like, the roller has the multiple functions of controlling the on-off state of the drainage tube, adjusting the flow rate of accumulated liquid, generating negative pressure in negative pressure drainage and the like, and the utilization rate of components is exerted to the maximum, so that the structure of the medical automatic drainage device is more compact, and the implementation cost is lower; to sum up, this medical automatic drainage device uses very conveniently, uses very nimble, and the operation is very simple, its compact structure, and design benefit can reciprocate to circulate and use, and the measurement is accurate, and cost of manufacture and use are lower, and is extremely fit for using widely in medical institution.

Drawings

Fig. 1 is one of the overall structural diagrams of the automatic drainage device for chinese medicine according to embodiment 1.

Fig. 2 is a second schematic view of the overall structure of the automatic drainage device for chinese medicine according to embodiment 1.

Fig. 3 is a schematic structural diagram of the installation plate, the drainage regulating assembly and the controller in embodiment 1.

Fig. 4 is an exploded view of the setting plate, the drainage regulating assembly and the controller in embodiment 1.

FIG. 5 is a schematic view of the helical extension of the draft tube in the annular gap according to example 1.

FIG. 6 is a view showing a state where the drainage tube and the drainage regulating assembly are combined in embodiment 1.

FIG. 7 is a schematic view showing the operation of the drainage regulating assembly in the negative pressure drainage mode in example 1.

FIG. 8 is a schematic view showing the operation of the flow-directing regulating assembly in the normal-pressure flow-directing mode in example 1.

Fig. 9 is a schematic view of the combination of the automatic drainage device for chinese medicine, a drainage bag and a drainage tube in example 1.

Fig. 10 is a control schematic diagram of the automatic drainage device for chinese medicine in operation according to example 1.

Fig. 11 is a schematic structural view of a weighted suspension assembly in embodiment 1.

Fig. 12 is a schematic structural view of a center wheel, a roll, and a roll stand in embodiment 1.

Fig. 13 is a schematic view showing the cooperation of the cam with the center wheel and the guide wheel in embodiment 1.

Fig. 14 is a state diagram of the slide shutter at the stroke start end in embodiment 2.

Fig. 15 is a state diagram of the slide shutter at the stroke end in embodiment 2.

Fig. 16 is a schematic view of a connection structure of the weighted suspension assembly and the installation plate in embodiment 3.

FIG. 17 is a schematic view showing the connection of the swing seat, the installation plate and the weight-measuring suspension assembly in embodiment 3.

FIG. 18 is a schematic view showing a structure in which the installation plate can be combined with the fastener and the pillar via the combination seat in embodiment 4.

FIG. 19 is a schematic view showing the operation of the automatic drainage device for TCM in example 4 in which the automatic drainage device is supported by an infusion rod.

Fig. 20 is a schematic structural diagram of a card firmware in embodiment 4 after further improvement.

FIG. 21 is a schematic view of the embodiment 4 with the clamping member further modified to be combined with the infusion rod.

In the figure, 1, a base, 2, a column, 3, a weight-measuring suspension component, 4, a recess, 5, a roller frame, 6, a guide wheel, 7, a roller, 8, a central wheel, 9, a cam, 10, a leading-in hole, 11, a display screen, 12, a controller, 13, a setting key, 14, a placing plate, 15, a leading-out groove, 16, a hanging part, 17, a weighing sensor, 18, a power supply part, 19, a motor device, 20, an elastic part, 21, a roller groove, 22, a shaft seat, 23, a shaft hole, 24, a main shaft, 25, a drainage tube, 26, a drainage bag, 27, a weighing rod, 28, a sliding sleeve, 29, an eccentric shaft, 30, a connecting plate, 31, a limiting part, 32, a spiral profile section, 33, a sliding baffle, 34, a finger handle, 35, a square groove, 36, an elastic part, 37, a second rotating shaft, 38, a first rotating shaft, 39, a swinging seat, 40, an angle limiting mechanism, 41, a damping cushion, 42 and a clamping, 43. t-shaped rib 44, T-shaped groove 45, combined seat 46, infusion rod 47, limiting seat 48, arc end 49, antiskid rubber cushion 50, floating holding block 51, sliding groove 52, sliding block 53, clamping port 54 and reset spring.

Detailed Description

Example 1

Referring to fig. 1 and 2, the medical automatic drainage device disclosed in this embodiment is composed of a bracket assembly, a weight-measuring suspension assembly 3, a drainage adjustment assembly, a controller 12 and a power supply part 18;

referring to fig. 1 and 2, the bracket assembly is composed of a base 1, a column 2 and a mounting plate 14; the upright post 2 is supported by the base 1 and extends vertically, and the setting plate 14 is supported by the upright post 2 and is positioned above the base 1 and at the front side of the upright post 2; the setting plate 14 is used for providing support and installation space for other components;

as shown in fig. 2, 9 and 10, the weight-measuring suspension assembly 3 is supported by a mounting plate 14, a load cell 17 is arranged in the weight-measuring suspension assembly, and a suspension part 16 is arranged at the lower end of the weight-measuring suspension assembly; the weight-measuring type suspension support assembly 3 is used for providing only support for the drainage bag 26 and enabling the drainage bag 26 to be suspended below the placing plate 14, the height of the drainage bag 26 can be adjusted, and the weighing sensor 17 outputs a weight signal capable of reflecting the weight change state of accumulated liquid in the drainage bag 26;

referring to fig. 3, 4, 5 and 6, the drainage regulating assembly is composed of a recess 4, a central wheel 8, a roller 7, a cam 9 and a motor device 19; the concave seat 4 is arranged at the front side of the placing plate 14 and is in a cylindrical cavity shape, and the bottom of the concave seat is provided with a shaft seat 22; the rear side of the central wheel 8 is provided with a wheel shaft, the wheel shaft is in running fit with the shaft seat 22 so that the central wheel 8 is limited in the concave seat 4 and can only rotate around the central shaft, the side wall of the central wheel 8 is provided with a roller groove 21, and the central wheel 8 and the wheel shaft are provided with a shaft hole 23 which penetrates the central wheel 8 and the wheel shaft from front to back; an annular gap is formed between the concave seat 4 and the central wheel 8, the annular gap can be used for the drainage tube 25 to spirally extend in the annular gap, the placing plate 14 is provided with an introducing hole 10 and an extracting groove 15, the introducing hole 10 and the extracting groove 15 are respectively communicated to the side wall of the concave seat 4, the introducing hole 10 and the extracting groove 15 can guide the drainage tube 25 to enter the annular gap and spirally lead out after more than one circle and less than two circles in the annular gap, the cross section of the introducing hole 10 is circular, the cross section of the extracting groove 15 is U-shaped, and the groove opening at the front side of the extracting groove 15 is exposed at the front side of the placing plate 14; the roller 7 is supported by a roller frame 5, so that the central axes of the roller 7 and the central wheel 8 are always parallel, the roller frame 5 is movably connected with the central wheel 8, so that the roller 7 can move into the annular gap from the roller groove 21, and the roller frame 5 is connected with an elastic piece 20 to automatically reset the roller 7 into the roller groove 21; the roller frame 5 is additionally provided with a guide wheel 6, the guide wheel 6 is positioned at the front side of the roller 7, and the rotating shafts of the guide wheel and the roller are parallel; the cam 9 is positioned at the front side of the central wheel 8 and is fixedly connected with a main shaft 24, the rear end of the main shaft 24 extends to the rear of the shaft seat 22 through the central wheel 8 and a shaft hole 23 of a wheel shaft, and the rear end of the main shaft 24 is in transmission connection with a motor device 19 fixed on the placing plate 14; as shown in fig. 7, during the continuous forward rotation of the cam 9, the cam 9 firstly pushes the guide wheel 6 continuously through the outer contour to make the roller 7 away from the central wheel 8 until the roller 7 and the sidewall of the recess 4 press the drainage tube 25 to the blocking state, and then the cam 9 cannot continuously drive the roller 7 away from the central wheel 8 to drive the roller 7 and the central wheel 8 to rotate together, and the roller 7 will rotate to revolve around the drainage tube 25 rolling in the annular gap all the time through the rotation, and drive the fluid in the drainage tube 25 to continuously flow towards the drainage bag; the cam 9 can reset the roller 7 into the roller groove 21 through reverse rotation; after the drainage adjusting assembly adopts the structure, as shown in fig. 5, the drainage tube 25 is spirally arranged in the annular gap, as shown in fig. 7, the cam 9 continuously rotates in the forward direction, so that the fluid in the drainage tube 25 continuously flows towards the drainage bag, namely, the effusion flows into the drainage bag 26 from a human body, and therefore, the negative pressure drainage can be realized, the negative pressure drainage state can be adjusted by adjusting the start and stop of the forward rotation of the cam 9 and the rotating speed, and meanwhile, when the normal pressure drainage is performed through the siphon effect, as shown in fig. 8, the cam 9 can adjust the relative position of the roller 7 and the central wheel 8 through the low-speed rotation, so that the roller 7 and the side wall of the recess 4 extrude the drainage tube 25 in the annular gap to a corresponding degree, and the normal pressure drainage state can be adjusted;

referring to fig. 3 and 10, the controller 12 is fixed on the mounting plate 14, and the front side of the controller is provided with a setting key 13 and a display screen 11; the setting key 13 is used for inputting a drainage mode, drainage parameters and a startup and shutdown instruction of each drainage into the controller 12, the drainage mode comprises normal-pressure drainage and negative-pressure drainage, the drainage parameters comprise drainage starting time, effusion weight drained in unit time in the drainage process, namely drainage speed, and effusion weight drained in single drainage, namely single drainage amount; the controller 12 can obtain a weight signal continuously fed back by the weighing sensor 17 in real time, and calculate the real-time drainage speed and the single real-time drainage quantity according to the weight signal; the controller 12 can adjust the start-stop, steering, rotation speed and rotation angle of the cam 9 based on the control of the motor device 19; in the negative pressure drainage mode, the controller 12 enables the cam 9 to continuously rotate in the positive direction, as shown in fig. 7, the roller 7 drives the fluid in the drainage tube 25 to continuously flow towards the drainage bag to realize negative pressure drainage, and the controller 12 regulates and controls the starting, stopping and rotating speed of the rotation of the cam 9 based on the real-time drainage speed, the single real-time drainage quantity and the preset drainage parameters to realize timing drainage, constant-speed drainage and quantitative drainage; in the normal-pressure drainage mode, normal-pressure drainage is realized based on a siphon effect, as shown in fig. 8, the controller 12 rotates the cam 9 at a low speed, and regulates and controls the steering and rotating angle of the cam 9 based on the real-time drainage speed, the single real-time drainage quantity and preset drainage parameters, namely, the extrusion degree of the roller 7 and the side wall of the recess 4 on the drainage tube 25 is regulated, so that the timed drainage, the constant-speed drainage and the quantitative drainage are realized; after receiving a shutdown instruction, the controller 12 reversely rotates the cam 9, and then performs shutdown after the roller 7 is reset into the roller groove 21, so that the drainage tube 25 can be smoothly separated from the annular gap after the drainage operation is finished, and the drainage tube 25 can be smoothly arranged in the annular gap when the medical automatic drainage device is used next time; the display screen 11 is used for displaying data information grasped in the controller 12, including information of real-time drainage speed, single real-time drainage quantity, set drainage mode, drainage parameters and the like, and also can display drainage states indirectly obtained based on the information, such as working states of drainage in-process, drainage pause, drainage end and the like, so that an operator can know drainage conditions in time;

as shown in fig. 2, the power supply part 18 is installed on the installation board 14, and is composed of a storage battery and a plurality of voltage transformation modules, and is used for providing working current for the weighing suspension assembly 3, the current guiding adjustment assembly and the elements in the controller 12; the structure of the power supply portion 18 and its connection with other components are not described in detail since they can be easily implemented using the prior art.

referring to fig. 9 and 10, the medical automatic drainage device is placed on the ground or a platform, the upper end of the drainage bag 26 is fixed through the hanging part 16, so that the drainage bag 26 is suspended above the base 1, and if normal pressure drainage is performed, the drainage bag 26 is required to be lower than a drainage source; the drainage tube 25 passes through the introduction hole 10 and enters the annular gap, the drainage tube 25 extends more than one circle and less than two circles in the annular gap in a spiral mode and then is led out from the leading-out groove 15, the lower end of the drainage tube 25 is connected with the drainage bag 26, the height of the drainage bag 26 is adjusted by the weight-measuring type suspension component 3, the part of the drainage tube 25, which is positioned between the leading-out groove 15 and the drainage bag 26, is in a natural extension state, the front end of the drainage tube 25 is communicated with a chamber to be drained of a patient and is fixed according to the conventional drainage operation, the medical automatic drainage device is adjusted to a starting state by the setting key 13, the drainage mode and the drainage parameters are preset in the controller 12 by the setting key 13 according to the clinical requirement, and at the moment, the early preparation work of; thereafter, the controller 12 can automatically control the medical automatic drainage device based on the real-time drainage speed, the single real-time drainage quantity, the preset drainage mode and the drainage parameters, and the specific regulation and control mode is as follows:

(1) referring to FIGS. 8 and 10, in the normal pressure drainage mode

a. During primary drainage, the controller 12 firstly enables the cam 9 to continuously rotate in the forward direction, the roller 7 enables air or accumulated liquid in the drainage tube 25 to continuously flow towards the direction of the drainage bag, when the weighing sensor 17 senses weight change, the accumulated liquid in the drainage bag 26 enters, then the controller 12 enables the cam 9 to rotate in the reverse direction, the roller 7 approaches the central wheel 8, the drainage tube 25 is enabled to be in a conduction state, at the moment, primary drainage is started, and normal-pressure drainage can be normally carried out by means of a siphon effect; in each drainage thereafter, the controller 12 adjusts the extrusion degree of the roller 7 to the drainage tube 25 through the rotation of the cam 9 according to the preset initial time of each drainage, so that the drainage tube 25 reaches a conduction state, namely, the timing drainage is realized;

b. in the drainage process, the controller 12 adjusts the extrusion degree of the roller 7 on the drainage tube 25 through the rotation of the cam 9 according to the real-time drainage speed, so that the flow velocity of the effusion in the drainage tube 25 is increased or reduced, and finally the real-time drainage speed is approximately equal to the preset drainage speed, namely, the constant-speed drainage is realized;

c. in the drainage process, the controller 12 calculates the single real-time drainage amount from the initial drainage to the current drainage in real time, when the single real-time drainage amount reaches the preset single drainage amount, the controller 12 adjusts the extrusion degree of the roller 7 on the drainage tube 25 through the rotation of the cam 9, so that the drainage tube 25 is extruded to a blocking state, and the quantitative drainage is realized when the drainage is finished;

(2) referring to fig. 7 and 10, in the negative pressure drainage mode

a. According to the preset drainage starting time, the controller 12 enables the cam 9 to continuously rotate in the forward direction, and the roller 7 enables air or effusion in the drainage tube 25 to continuously flow towards the drainage bag direction, so that the timed drainage is realized;

b. in the drainage process, the controller 12 adjusts the rotating speed of the forward rotation of the cam 9 according to the real-time drainage speed, so that the flow speed of the accumulated liquid in the drainage tube 25 is increased or reduced, and finally the real-time drainage speed is approximately equal to the preset drainage speed, namely, constant-speed drainage is realized;

c. in the drainage process, the controller 12 calculates the single real-time drainage volume from the initial drainage to the current drainage in real time, after the single real-time drainage volume reaches the preset single drainage volume, the controller 12 stops rotating the cam 9, the drainage is finished at the moment, and the drainage tube 25 is still extruded by the static roller 7 to keep a cut-off state, so that the quantitative drainage is realized.

Referring to fig. 2, 9 and 10, in the above medical automatic drainage device, the weight-measuring suspension support assembly 3 has two functions, on one hand, the weight-measuring suspension support assembly 3 provides a stable support for the drainage bag 26, so that the drainage bag 26 is in a suspension shape and has a basic function of containing drainage effusion in the drainage process, on the other hand, in the drainage process, the weighing sensor 17 in the weight-measuring suspension support assembly 3 can output a weight signal reflecting the change state of the effusion weight in the drainage bag 26, so as to provide basic data for data processing of the controller 12, and meanwhile, the weight-measuring suspension support assembly 3 can also adjust the height of the drainage bag 26 within a certain range, so that after the drainage bag 26, the drainage tube 25 and the medical automatic drainage device are combined, the part of the drainage tube 25 between the drainage groove 15 and the drainage bag 26 can be adjusted to a natural extension shape; in terms of the prior art, the weight-measuring suspension support assembly 3 can be obtained by slightly improving the structure of the existing electronic scale, and the specific structure has various implementation modes; however, in order to make the weighing suspension support assembly 3 more compact and more stable under the condition that it satisfies the above requirements, the weighing suspension support assembly 3 is preferably implemented by adopting the following structure:

as shown in fig. 11, the weight-measuring suspension assembly 3 includes a sliding sleeve 28, a weighing rod 27, a load cell 17 and a suspension portion 16; the sliding sleeve 28 is fixed on the placing plate 14, an inner cavity with an open lower end and a blind upper end is arranged in the sliding sleeve 28, the middle upper part of the weighing rod 27 is positioned in the sliding sleeve 28 and the weighing rod 27 can only slide up and down relatively, and the weighing sensor 17 is fixed in the sliding sleeve 28 to provide upward support for the weighing rod 27; the upper end of the hanging part 16 is connected with the lower end of the weighing rod 27 in an inserting way, and a locking mechanism for locking the relative positions of the hanging part and the weighing rod is arranged between the hanging part and the weighing rod; after the drainage bag 26 is fixedly connected with the hanging part 16, the weighing sensor 17 can pick up the weight change state of the accumulated liquid in the drainage bag 26 and output a corresponding weight signal;

in addition, as shown in fig. 8, a hook for engaging with a hanging ring of the drainage bag 26 can be disposed at the lower end of the hanging part 16, and the hook can be made of a bent strip material in order to prevent the drainage bag 26 from rotating relative to the hanging part 16; meanwhile, the lower end of the hanging part 16 can also be provided with a clamping mechanism which can clamp and fix the upper end of the drainage bag 26;

in the structure of the weight-counting suspension support assembly 3, the suspension part 16 cannot rotate relative to the placing plate 14, so that stable support can be provided for the drainage bag 26, and inaccurate weight counting caused by rotation or shaking of the drainage bag 26 in the drainage process is avoided; the hanging part 16 and the weighing rod 27 can transmit the weight change of the effusion in the drainage bag 26 to the weighing sensor 17; the hanging part 16 can be adjusted in position in the vertical direction, so that the height of the drainage bag 26 can be adjusted; the structure meets the basic function requirement of the weight-measuring type suspension support component 3, and has the advantages of simple structure, accurate measurement, small size, compactness and easy implementation.

Referring to fig. 7 and 8, in the medical automatic drainage device, the cam 9 has two rotation forms of forward rotation and reverse rotation according to different rotation directions, wherein the forward rotation and the reverse rotation are relative, and are only a reference for the rotation direction set for convenience of description, because in the specific implementation process, the matching way of the drainage tube 25 and the roller 7 and the matching way of the roller 7 and the cam 9 are not limited to a specific one; in the medical automatic drainage device, the rotation direction which can drive the roller 7 to be far away from the central wheel 8 in the rotation process of the cam 9 is set as a turning direction a, the revolution direction which can drive the fluid in the drainage tube 25 to flow towards the drainage bag in the revolution process of the roller 7 is set as a turning direction b, and when the medical automatic drainage device is specifically implemented, the turning direction a and the turning direction b are in the same direction, wherein the turning direction a is the forward direction, and the reverse direction is the reverse direction; meanwhile, for the above reasons, in various embodiments of the medical automatic drainage device, the actual rotation direction of the forward revolution of the cam 9 is not necessarily the same.

Referring to fig. 4 and 5, in the medical automatic drainage device, an introduction hole 10 and a lead-out groove 15 communicated with the side wall of the recess 4 are formed on a mounting plate 14; on one hand, the introducing hole 10 and the leading-out groove 15 are used for guiding the drainage tube 25 to smoothly enter the annular gap and be led out from the annular gap, so that the drainage tube 25 is favorably spirally extended in the annular gap in a specific mode, and the dead bend at the bending part of the drainage tube 25 is avoided to increase the tube resistance; on the other hand, the introducing hole 10 and the leading-out groove 15 exert certain clamping and fixing effects on the drainage tube 25, so that the drainage tube 25 is prevented from moving due to the extrusion effect of the roller 7, and the matching stability of the drainage tube 25 and the roller 7 in the annular gap is improved;

in addition, in the medical automatic drainage device, there is a technical characteristic that the cross section of the inlet hole 10 is circular, and the front side notch of the lead-out groove 15 is exposed to the front side of the setting plate 14, which is intended to improve the integrity of the side wall of the recess 4 to the maximum extent under the condition that the drainage tube 25 can be introduced and led out of the annular gap, so as to ensure that the roller 7 can exert a stable extrusion effect on the drainage tube 25 in the annular gap with the side wall of the recess 4 when rotating to any position, and on the other hand, reduce the difficulty of disassembling and assembling the drainage tube 25 and the inlet hole 10, the annular gap and the lead-out groove 15 when meeting the aforesaid effect.

Referring to fig. 5 and 7, in the medical automatic drainage device, the drainage tube 25 extends more than one circle and less than two circles in a spiral manner in the annular gap, wherein the purpose of "more than one circle" is to continuously extrude the drainage tube 25 in the annular gap when the roller 7 continuously revolves in the negative pressure drainage process, and the whole drainage tube 25 is not continuously extruded, so that the fluid in the drainage tube 25 can be ensured to continuously flow towards the drainage bag direction, and the fluid in the drainage tube 25 is prevented from flowing back, and the purpose of "less than two circles" is to avoid the drainage tube 25 from excessively spiraling in the annular gap, on one hand, the whole resistance of the drainage tube 25 is prevented from being increased, on the other hand, the sizes of the annular gap, the central wheel 8 and the roller 7 in the front and back direction are effectively reduced, so that the above components are more compact in structure;

if the roller is not arranged, in the negative pressure drainage process, the change of the relative position of the roller 7 and the drainage tube 25 in the continuous revolution process can cause the flow velocity of the accumulated liquid in the drainage tube 25 to generate certain change, but the change of the flow velocity is not obvious and does not influence the actual clinical drainage effect; meanwhile, the problem of non-uniform flow rate can be alleviated by means of adding a buffer container on the drainage tube 25.

Referring to fig. 7, when the medical automatic drainage device is used clinically, in the negative pressure drainage process, the drainage tube 25 needs to provide necessary pressure for the negative pressure drainage by means of its own elastic capacity, generally speaking, the drainage tube 25 used clinically at present has better elasticity, and in the initial stage of the negative pressure drainage, the elastic performance of the drainage tube 25 is optimal to meet the aforementioned negative pressure requirement, but as the number of times of extrusion increases, the elastic performance of the drainage tube 25 located in the annular gap is weakened, and the maximum negative pressure provided by means of its own elastic capacity is reduced; however, in the use process of the medical automatic drainage device, the medical automatic drainage device can be placed at a position lower than a patient, in addition, the drainage adjusting component acts on the middle lower part of the drainage tube 25, the gravitational potential energy of effusion in the drainage tube 25 can relieve the requirement of required negative pressure, the additionally provided negative pressure is smaller in the drainage process, and even if the elasticity of the drainage tube 25 in the annular gap is weakened, sufficient negative pressure can still be provided for negative pressure drainage.

Referring to fig. 9 and 10, in the clinical use of the medical automatic drainage device, the weight of the drainage bag 26 and the accumulated fluid therein is almost completely borne by the hanging portion 16, i.e. almost the entire weight of the drainage bag 26 and the accumulated fluid therein can be transmitted to the weighing sensor 17, the weight of the weighing type suspension support assembly 3 and the drainage bag 26 after installation is constant during the drainage, and thus the weight change sensed by the weighing sensor 17 is caused by the increase of the accumulated fluid in the drainage bag 26, so that the controller 12 can calculate the weight change speed of the accumulated fluid in the drainage bag 26, i.e. the real-time drainage speed, according to the weight signal continuously fed back by the weighing sensor 17 during the drainage, i.e. the accumulated weight increase of the accumulated fluid in the drainage bag 26 during the period from the beginning of the drainage to the present time, i.e. the single real-time drainage quantity, therefore, the technical requirement that the controller 12 can calculate the real-time drainage speed and the single real-time drainage quantity based on the weight signal continuously fed back by the weighing sensor 17 in real time can be realized by adopting the prior art;

if the drainage bag 26 cannot be placed, in the drainage process, the drainage bag 26 is fixedly connected with the tail end of the drainage tube 25, the drainage tube 25 inevitably generates a certain acting force on the drainage bag 26, and the acting force can be changed along with the deformation of the drainage bag 26, so that the data accuracy of the real-time drainage speed and the single real-time drainage quantity is influenced to a certain extent; however, in the medical automatic drainage device, before clinical drainage is implemented, the height of the drainage bag 26 can be adjusted through the weight-measuring type suspension support component 3, so that the part of the drainage tube 25, which is positioned between the drainage groove 15 and the drainage bag 26, is in a natural extension state, the acting force of the lower end of the drainage tube 25 on the drainage bag 26 can be reduced, the acting force tends to be constant, and the influence of the factors on the data accuracy of the real-time drainage speed and the single real-time drainage quantity is reduced.

Referring to fig. 2, 9 and 10, in the medical automatic drainage device, the weighing sensor 17 can pick up the change state of the weight of the accumulated liquid in the drainage bag 26, and output a weight signal according to the change state to provide a data basis for the controller 12 to calculate parameters such as real-time drainage speed, single real-time drainage quantity and the like, so that the accuracy of the weight signal output by the weighing sensor 17 is a key factor influencing whether the medical automatic drainage device can accurately control the drainage process; the weight metering function part in the weight metering type suspension support component 3 can be regarded as a conventional weight metering mechanism, and as is well known, the weight metering mechanism can only stably and accurately work in a specific direction, namely, the accuracy of a weight signal output by the weighing sensor 17 can be ensured only when the medical automatic drainage device is horizontally placed, otherwise, the gravity generated by accumulated liquid in the drainage bag 26 is decomposed, so that the weight signal output by the weighing sensor 17 is inaccurate; generally speaking, with the gradual improvement of ward conditions of medical units, the ground in the ward is smoother and tends to be horizontal, so when the medical automatic drainage device is placed on the ground of the ward for use, the technical requirement of horizontal placement can be met, and the weight signal output by a retransmission sensor can be ensured to be more accurate;

step by step, even if the ground in the ward does not meet the requirement of tending to the level, the medical automatic drainage device can be adjusted in a mode of arranging articles below the base 1 in a cushioning mode, so that the medical automatic drainage device is horizontally arranged, and the accuracy of the weight signal output by the retransmission sensor in the clinical drainage process is ensured.

Referring to fig. 10, in the medical automatic drainage device, the controller 12 can adjust the start, stop, rotation direction, rotation speed and rotation angle of the rotation of the cam 9 based on the control of the motor device 19. in terms of the prior art, the motor device 19 can adopt a servo motor, the output shaft of the servo motor is in transmission connection with the main shaft 24, the start, stop, rotation direction, rotation speed and rotation angle of the rotation of the cam 9 are directly determined by the working state of the servo motor, and the application of the control of the working state of the servo motor by the controller 12 is very common and mature, so that the technical characteristics can be implemented without difficulty.

Referring to fig. 7 and 8, in the medical automatic drainage device, the roller frame 5 can be generalized to two functions, on one hand, it is used for keeping the central axes of the roller 7 and the central wheel 8 parallel at all times and providing stable support for the roller 7, so that the roller 7 can extrude the drainage tube 25 in the annular gap according to the need, and on the other hand, it is used for adjusting the relative positions of the roller 7 and the central wheel 8, so that the roller 7 can enter the annular gap or the roller groove 21 according to the need; the roller frame 5 has various embodiments by adopting the prior art, for example, the roller frame 5 can adopt a wheel fork structure to be rotationally connected with a roller shaft of the roller 7, and the other end of the roller frame 5 is connected with the central wheel 8 by adopting a hinged or sliding fit mode, the technical requirements can be easily realized, in order to make the structure of the roller frame 5 simpler and more compact and stable, the matching structure of the roller 7, the roller frame 5 and the central wheel 8 is preferably implemented by adopting the following structure:

as shown in fig. 12, the roller frame 5 is composed of two connecting plates 30 with the same shape and respectively located at two sides of the roller 7, one end of each connecting plate 30 is rotatably connected with the roller shaft of the roller 7, the other end of each connecting plate 30 is rotatably connected with an eccentric shaft 29 fixed at the side surface of the central wheel 8, so that the roller 7 can be adjusted to be opposite to the central wheel 8 around the eccentric shaft 29, the roller 7 can move towards the central wheel 8 to enter the roller groove 21, and the roller 7 can enter the annular gap far away from the central wheel 8 and can press the drainage tube 25 in the annular gap with the side wall of the recess 4 to be in a blocking state.

Referring to fig. 7, in the medical automatic drainage device, during the continuous forward rotation of the cam 9, the cam 9 firstly makes the roller 7 far away from the central wheel 8 until the roller 7 and the side wall of the recess 4 extrude the drainage tube 25 to a blocking state, and then drives the roller 7 and the central wheel 8 to rotate together; in the process that the cam 9 drives the roller 7 to be away from the central wheel 8 through rotation, the central wheel 8 can bear the torsion applied by the roller frame 5 and the resistance applied by the shaft seat 22, the central wheel 8 can be ensured to be still and the roller 7 is away from the central wheel as long as the resistance is larger than the torsion, after the roller 7 and the side wall of the recess 4 extrude the drainage tube 25 to be in a blocking state, the roller 7 can not move relative to the central wheel 8, the torsion applied by the roller frame 5 on the central wheel 8 is increased sharply, and the central wheel 8 and the roller 7 can rotate together with the cam 9 as long as the torsion applied by the central wheel 8 at the moment is larger than the resistance; therefore, in the manufacturing process of the medical automatic drainage device, the resistance to rotation of the central wheel 8 is reasonably adjusted, and the technical requirements are not difficult to realize.

Referring to fig. 8 and 10, when the medical automatic drainage device is used clinically, in a normal pressure drainage mode, the controller 12 can adjust the extrusion degree of the rollers 7 and the side wall of the recess 4 on the drainage tube 25, so as to realize the control of the drainage state; the cam 9, the guide wheel 6, the roller frame 5 and the roller 7 are matched to form a conventional cam 9 mechanism, and the position of the roller 7 is actually determined by the relative position of the guide wheel 6 and the cam 9 in the state that the central wheel 8 is static; the controller 12 can regulate the rotation direction and the rotation angle of the cam 9, namely the relative position of the cam 9 and the guide wheel 6 can be regulated, so that the controller 12 has the function of regulating the extrusion degree of the side walls of the roller 7 and the recess 4 on the drainage tube 25; meanwhile, the controller 12 can improve the accuracy of the position control of the roller 7 by reducing the rotation speed of the cam 9;

further, as for the cam 9, it can be implemented by using a conventional structure in the prior art, but in general, the larger the rotation angle required for the cam 9 to drive the roller 7 to move from the roller groove 21 to the position of pressing the draft tube 25 to the blocking state, the more precise the flow rate control in the normal pressure draft mode, so the cam 9 is preferably implemented by using the following structure:

as shown in fig. 13, the outer contour of the cam 9 includes a spiral profile section 32 extending in a constant spiral curve and a limiting portion 31 protruding outward from the wheel surface, and the start end and the stop end of the spiral profile section 32 are separated by the limiting portion 31; the cam 9 rotates in the positive direction, and the roller 7 can be far away from the central wheel 8 by continuously pushing the guide wheel 6 by the outer contour until the roller 7 and the side wall of the recess 4 extrude the drainage tube 25 to a blocking state; the cam 9 rotates reversely, the guide wheel 6 enables the roller 7 to gradually approach the central wheel 8 along with the change of the position of the spiral profile section 32, and after the roller 7 is reset to the roller groove 21, the limiting part 31 contacts with the guide wheel 6 and drives the roller 7 and the central wheel 8 to rotate together;

in this way, during the forward rotation of the cam 9, the position of the roller 7 can be adjusted by engaging the spiral profile 32 of approximately one turn with the guide wheel 6, so that the flow rate control in the normal pressure drainage mode is more precise.

Referring to fig. 9 and 10, the medical automatic drainage device adopts an intelligent design, and can realize functions of timed drainage, constant-speed drainage, quantitative drainage and the like according to preset drainage parameters in clinical drainage operation, so that the aim of full-automatic drainage control is fulfilled, the labor burden is saved, and the safety, stability and accuracy of drainage operation are improved; the medical automatic drainage device is matched with the conventional drainage bag 26 and the drainage tube 25 for use, and the existing structures of the drainage bag 26 and the drainage tube 25 do not need to be changed, so that the medical automatic drainage device is easier to popularize and use; the medical automatic drainage device has two working modes of normal-pressure drainage and negative-pressure drainage, can meet different drainage operation requirements of pleural effusion drainage, abdominal effusion drainage and the like, and has stronger applicability and wider application range; meanwhile, the medical automatic drainage device has the advantages of small volume, convenient movement, convenient carrying, small occupied space, high flexibility and great clinical popularization value.

Example 2

Referring to fig. 4 and 5, in the automatic medical drainage device disclosed in the foregoing embodiment, the cross section of the introduction hole 10 is circular to ensure the integrity of the sidewall of the recess 4 to the maximum extent, and based on the circular hole structure adopted by the introduction hole 10, when the drainage tube 25 is introduced into the annular gap, the tail end of the drainage tube 25 needs to pass through the introduction hole 10 from front to back, which is not convenient enough; for this reason, the present embodiment is based on embodiment 1, and has the following modifications to the installation plate 14:

as shown in fig. 14 and 15, the setting plate 14 is provided with a square groove 35 on the front side wall for completely exposing the introducing hole 10, and a sliding baffle 33 with a moving stroke is defined in the square groove 35; when the slide shutter 33 is positioned at the beginning of its stroke, it blocks the front side of the introduction hole 10 and can press the drainage tube 25 in the introduction hole 10; when the sliding baffle 33 is positioned at the stroke end, the introducing hole 10 is completely exposed through the square groove 35, and the drainage tube 25 can be taken from the introducing hole 10 and placed from the front side of the placing plate 14; an elastic component 36 for driving the sliding baffle 33 to automatically reset to the stroke starting end is arranged between the sliding baffle 33 and the setting plate 14; the sliding baffle 33 and the placing plate 14 are provided with finger handles 34 which are convenient for manually driving the sliding baffle 33 to move towards the stroke terminal;

based on the above improved structure, as shown in fig. 15, the sliding baffle 33 is driven by fingers to overcome the elastic force of the elastic component 36 and move to the end of the stroke, at this time, the introducing hole 10 is completely exposed through the square groove 35, and the drainage tube 25 can be conveniently and quickly taken out from the introducing hole 10 from the front side of the placing plate 14; as shown in fig. 14, after the finger handle 34 is released, the sliding baffle 33 is automatically reset to the stroke beginning end under the driving of the elastic component 36, the front side of the introduction hole 10 is plugged, and meanwhile, the drainage tube 25 in the introduction hole 10 is pressed tightly, so that the drainage tube 25 in the introduction hole 10 is firmly fixed, and the side wall of the recess 4 is ensured to be complete.

Example 3

Referring to fig. 2, 9 and 10, in the medical automatic drainage device disclosed in example 1, it has been clarified that the accuracy of the weighing signal output by the weighing sensor 17 is greatly affected by whether the medical automatic drainage device is horizontally placed; if the ground levelness is relatively poor, although the problem can be solved by cushioning articles below the base 1, the operation is troublesome, time and labor are wasted, and therefore, the medical automatic drainage device disclosed in embodiment 1 is further improved in the following way on the basis of the structure thereof:

as shown in fig. 16 and 17, a first rotating shaft 38 extending horizontally and backwardly is fixed at the rear side of the installation plate 14, and a swinging seat 39 is fixed through the first rotating shaft 38 and can swing left and right with a small amplitude; the upper end of the weight-measuring suspension support component 3 is connected with the swinging seat 39 through the second rotating shaft 37, so that the weight-measuring suspension support component 3 can swing back and forth in a small range; the first rotating shaft 38 and the second rotating shaft 37 are perpendicular to each other; when the drainage bag 26 is fixed by the hanging part 16, the weight-measuring type suspension support component 3 is driven by gravity to always maintain a specific direction, and the weight change state of the accumulated liquid in the drainage bag 26 can be accurately picked up by the weight sensor 17 in the specific direction;

when the medical automatic drainage device is improved in structure, the weight-measuring type suspension support component 3 has an automatic direction adjusting mechanism, even if the medical automatic drainage device is not horizontally arranged in clinical use, the weight-measuring type suspension support component 3 can automatically adjust to and maintain in a specific direction through left-right swinging and front-back swinging, so that the weighing sensor 17 can work stably and accurately;

in the improved structure, the swinging seat 39 can swing left and right with small amplitude, the weight-measuring suspension component 3 can swing front and back with small amplitude, and the front and back swing and the left and right swing are both small amplitude, which is intended to limit the change of the relative position of the mounting plate 14 and the weight-measuring suspension component 3 within a small range, and avoid the inconvenience for the mounting, carrying and other operations of the medical automatic drainage device caused by the unstable relative position of the mounting plate 14 and the weight-measuring suspension component 3; the specific swing angle range of the small amplitude has no accurate requirement, and the aim is to ensure that the medical automatic drainage device can stably and accurately work under most ground conditions;

meanwhile, the technical requirements that the weight-measuring suspension assembly 3 and the swinging seat 39 can only swing back and forth and swing left and right within a small range are met, and the technical requirements can be easily met by arranging corresponding angle limiting mechanisms 40 between the weight-measuring suspension assembly 3 and the swinging seat 39 and between the swinging seat 39 and the mounting plate 14;

for the technical requirement that the weight-measuring suspension support component 3 can be automatically adjusted to and maintained in a specific direction under the drive of gravity, when the medical automatic drainage device is manufactured, the specific structural form of the weight-measuring suspension support component 3 is debugged, and a standard operation mode is set for the connection mode of the suspension part 16 and the drainage bag 26, so that the technical requirement is not difficult to realize; the specific direction is that the weight-measuring type suspension support assembly 3 is in the direction, and the weighing sensor 17 can accurately pick up the state of the weight change of the accumulated liquid in the drainage bag 26.

Example 4

Referring to fig. 1 and 9, drainage is a medical means which is commonly used in clinical practice at present, the clinical drainage process is mostly performed in a ward, and the medical automatic drainage device needs to be frequently moved back and forth between wards and instrument rooms; when the medical automatic drainage device is clinically used, the whole device can be stably supported by the base 1, the base 1 is necessarily large and heavy, the whole medical automatic drainage device is difficult to move and is influenced by the base 1, the whole volume of the medical automatic drainage device is large, the occupied space is large when the medical automatic drainage device is used, and the flexibility is poor;

generally speaking, the infusion support is a necessary medical device in a ward, the structure is relatively simple, the occupied space is small, and if the medical automatic drainage device can be used with the infusion support after removing a heavy base 1 part, a great deal of convenience is brought to the clinical drainage operation; based on the above reasons, the present embodiment has further improvements to the clinical drainage control device disclosed in the foregoing embodiments, and the specific implementation structure is as follows:

as shown in fig. 18 and 19, the automatic medical drainage device further comprises a clamping member 42 which can be clamped and fixed on a transfusion rod 46 of a transfusion stand; a combined seat 45 is arranged at the rear side of the placing plate 14, and the combined seat 45 is connected with the upper end of the upright post 2 in a detachable way; an assembling mechanism is arranged between the clamping piece 42 and the combined seat 45, and when the clamping piece 42 is connected with the combined seat 45, the medical automatic drainage device can be supported by the infusion rod 46 to work; the combined seat 45 and the upright post 2 can adopt a splicing structure to realize the technical purpose of disassembly and assembly, and the disassembly and assembly operation is also convenient;

therefore, as shown in fig. 19, in clinical use, the medical automatic drainage device can work in cooperation with an infusion support commonly provided in a ward without depending on the support provided by the base 1, so that the medical automatic drainage device is more convenient to move, more flexible to use and more convenient to operate.

In the above improved structure, the fastening member 42 and the assembly seat 45 can be connected by means of the assembling mechanism, in order to ensure that the fastening member 42 can provide sufficient and stable support for the medical automatic drainage device, as for the prior art, the assembling mechanism has various embodiments, but in order to ensure the stability and the convenience of disassembling and assembling after the fastening member 42 and the assembly seat 45 are combined, the assembling mechanism preferably adopts the following design, and the specific structure is as follows:

as shown in fig. 18 and 19, the assembling mechanism is composed of a T-shaped groove 44 disposed on one side of the combining seat 45 and a T-shaped rib 43 disposed on the clamping member 42, the T-shaped groove 44 extends vertically, the upper end is a blind end, the lower end is an open end, the T-shaped rib 43 and the T-shaped groove 44 can be combined, and the damping pad 41 for clamping the T-shaped groove 44 is disposed at the lower end of the T-shaped rib 43;

based on the above structure adopted by the assembling mechanism, the T-shaped rib 43 of the clamping member 42 is inserted into the T-shaped groove 44 of the combined base 45 from bottom to top, so that the assembling of the combined base 45 and the clamping member 42 is completed, otherwise, the combined base 45 and the clamping member 42 can be separated; when the T-shaped rib 43 and the T-shaped groove 44 are completely combined, the damping pad 41 tightly clamps the T-shaped groove 44 to lock the relative position of the T-shaped rib 43 and the T-shaped groove 44, thereby preventing the clamping member 42 from being separated from the combination base 45.

Referring to fig. 19, in the above improved structure, the fastening member 42 is used for fastening and matching with the infusion rod 46 to provide a stable support for the medical automatic drainage device, and as far as the prior art is concerned, the fastening member 42 has various embodiments, for example, a clamping mechanism for clamping the infusion rod 46 may be arranged on the fastening member 42, or a C-shaped clamp may be arranged on the fastening member 42, fastening screws are additionally arranged on the clamping mechanism and the C-shaped clamp, and an anti-slip gasket is additionally arranged on a contact surface with the infusion rod 46 to improve the stability of the combination of the fastening member 42 and the infusion rod 46; although the clamping piece 42 can meet the basic technical requirement of providing support for the medical automatic drainage device by adopting the structure, the clamping piece has the defects of not simple structure, not beautiful appearance, troublesome use and the like; meanwhile, generally speaking, the types of infusion supports used by the same medical institution are mostly the same, that is, the diameters of the infusion rods 46 are the same, but no exception exists, and the implementation structure adopted by the clamping member 42 is difficult to be compatible with the infusion rods 46 with different sizes for use, and will certainly form certain limitations in clinical use; therefore, the present embodiment also proposes a novel implementation manner for the clamping member 42, and the specific structure is as follows:

as shown in fig. 20 and 21, a clamping opening 53 for accommodating the transfusion rod 46 is formed in one side of the clamping member 42, two opposite side walls of the clamping opening 53 are respectively provided with a limiting seat 47, a floating holding block 50 is respectively arranged in the limiting seat 47, opposite end portions of the two floating holding blocks 50 are arc-shaped ends 48, end surfaces of the two arc-shaped ends 48 are both arc-shaped and are respectively fixed with an anti-skid rubber pad 49, and the two arc-shaped ends 48 are respectively used for holding two sides of the transfusion rod 46; the floating holding block 50 and the limiting seat 47 are matched through a guide mechanism formed by the sliding groove 51 and the sliding block 52, so that the floating holding block 50 has an oblique floating stroke, when the two floating holding blocks 50 move upwards along respective floating strokes simultaneously, the two arc-shaped ends 48 gradually approach and enter the clamping opening 53, and when the two floating holding blocks 50 move downwards along respective floating strokes simultaneously, the two arc-shaped ends 48 gradually separate and finally retract into the corresponding limiting seats 47; the two limiting seats 47 are respectively provided with a return spring 54 which drives the corresponding floating holding block 50 to return to the uppermost end of the floating stroke;

as shown in fig. 21, after the clamping member 42 adopts the above structure, the clamping port 53 of the clamping member 42 is clamped outside the infusion rod 46, the two floating clasping blocks 50 can clamp and clasp the infusion rod 46 from two opposite sides of the infusion rod 46, the weight of the medical automatic drainage device can generate a downward acting force on the clamping member 42, and the two floating clasping blocks 50 can respectively receive horizontal component forces to further clasp the infusion rod 46, in short, the larger the weight borne by the clamping member 42 is, the firmer the two floating clasping blocks 50 clasp the infusion rod 46 is, so that the clamping member 42 and the infusion rod 46 can be prevented from moving relative to each other, and the stability after the clamping member 42 and the infusion rod 46 are combined can be improved;

meanwhile, because the two floating holding blocks 50 have certain floating travel, the distance between the two floating holding blocks can be automatically adjusted according to the different diameters of the transfusion rods 46, the applicability of the clamping member 42 is improved to a certain extent, and the clamping member can be matched with various transfusion rods 46 with different diameters for use.

Claims

1. A medical automatic drainage device, characterized in that it includes:

the drainage adjusting component comprises a concave seat, a central wheel, a roller, a cam and a motor device; the concave seat is arranged at the front side of the placing plate and is in a cylindrical cavity shape, and the bottom of the concave seat is provided with a shaft seat; the rear side of the central wheel is provided with a wheel shaft matched with the shaft seat, so that the central wheel is positioned in the concave seat and can only rotate around the central shaft, the side wall of the central wheel is provided with a roller groove, and the central wheel and the wheel shaft are provided with shaft holes; an annular gap is formed between the concave seat and the central wheel, an introducing hole and an extracting groove which are respectively communicated with the side wall of the concave seat are arranged on the placing plate, the introducing hole and the extracting groove can guide the drainage tube to enter the annular gap and lead the drainage tube out after the drainage tube is screwed for more than one circle and less than two circles in the annular gap, the cross section of the introducing hole is circular, the cross section of the extracting groove is U-shaped, and a groove opening at the front side of the extracting groove is exposed at the front side of the placing plate; the roller is supported by a roller frame to enable central shafts of the roller and the central wheel to be always parallel, the roller frame is movably connected with the central wheel to enable the roller to move into the annular gap from the roller groove, the roller frame is connected with an elastic piece to automatically reset the roller into the roller groove, a guide wheel is additionally arranged on the roller frame, the guide wheel is positioned on the front side of the roller, and rotating shafts of the guide wheel and the roller are parallel; the cam is positioned on the front side of the central wheel and is fixedly connected with a main shaft, and the main shaft penetrates through the shaft hole and is in transmission connection with a motor device fixed on the mounting plate; in the continuous forward rotation process of the cam, the roller is firstly enabled to be far away from the central wheel by continuously pushing the guide wheel through the outer contour until the roller and the side wall of the concave seat extrude the drainage tube to a blocking state, then the roller and the central wheel are driven by the cam to rotate together, the roller performs revolution motion on the drainage tube which is rolled in the annular gap all the time through self rotation, and the fluid in the drainage tube is driven to continuously flow towards the direction of the drainage bag; the cam can reset the roller into the roller groove through reverse rotation;

2. The medical automatic drainage device according to claim 1, wherein: under the ordinary pressure drainage mode, the controller can carry out automatic control to medical automatic drainage device based on real-time drainage speed, single real-time drainage volume and predetermined drainage parameter, and concrete regulation and control mode is:

a. during primary drainage, the controller firstly enables the cam to continuously rotate in the forward direction, when the weighing sensor senses weight change, the controller enables the cam to rotate in the reverse direction, the roller approaches the central wheel, the drainage tube is enabled to be in a conduction state, the primary drainage is started at the moment, and normal pressure drainage can be normally carried out by means of siphon effect; in each drainage thereafter, the controller adjusts the extrusion degree of the roller to the drainage tube through the rotation of the cam according to the preset initial time of each drainage, so that the drainage tube reaches a conduction state, namely, the timed drainage is realized;

b. in the drainage process, the controller adjusts the extrusion degree of the roller on the drainage tube through the rotation of the cam according to the real-time drainage speed, so that the flow velocity of accumulated liquid in the drainage tube is increased or reduced, and finally the real-time drainage speed is approximately equal to the preset drainage speed, namely constant-speed drainage is realized;

c. in the drainage process, the controller calculates the initial single real-time drainage volume that reaches to present of this time drainage in real time, and when the single real-time drainage volume reached preset single drainage volume, the roller was adjusted to the extrusion degree of drainage tube to the rotation through the cam to the controller, makes the drainage tube extruded to the state of blocking, and this time drainage finishes this moment, realizes quantitative drainage promptly.

3. The medical automatic drainage device according to claim 1 or 2, wherein: under the negative pressure drainage mode, the controller can carry out automatic control to medical automatic drainage device based on real-time drainage speed, single real-time drainage volume and predetermined drainage parameter, and concrete regulation and control mode is:

a. according to the preset drainage starting time, the controller enables the cam to continuously rotate in the positive direction, and the roller enables air or accumulated liquid in the drainage tube to continuously flow towards the drainage bag, so that the timed drainage is realized;

b. in the drainage process, the controller adjusts the rotating speed of the cam in the forward direction according to the real-time drainage speed, so that the flow speed of the accumulated liquid in the drainage tube is increased or reduced, and finally the real-time drainage speed is approximately equal to the preset drainage speed, namely constant-speed drainage is realized;

c. in the drainage process, the controller calculates the single real-time drainage volume of this time of drainage beginning to reach at present in real time, and after the single real-time drainage volume reached preset single drainage volume, the controller will make the cam stop rotating, and this time drainage finishes and the drainage tube is still extruded by the static roll and keeps the off-state this moment, realizes quantitative drainage promptly.