Medical injection infusion bag integrated with self-suction drainage mechanism

Abstract

The invention relates to the technical field of medical infusion appliances, in particular to a medical injection infusion bag integrated with a self-suction drainage mechanism, which comprises an infusion bag and a hanging hole, an injection tube and an infusion tube are fixedly connected to the left side and the right side of the bottom of the infusion bag respectively, and an elastic drainage bag is fixedly connected to the top of the inner wall of the infusion bag; a communicating pipe is fixedly connected to the bottom of the elastic drainage bag, a one-way valve is installed on the outer surface of the communicating pipe, a liquid treatment cavity is fixedly connected to the bottom of the communicating pipe, a temperature control module is connected to the exterior of the liquid treatment cavity, and a medical filter element is fixedly installed at the top in the liquid treatment cavity. According to the medical injection infusion bag integrated with the self-suction drainage mechanism, self-suction drainage, liquid pretreatment and pressure regulation and control are integrated, operations such as autologous blood transfusion and lacuna effusion drainage after trauma can be completed, and the elastic drainage bag is matched with the micro elastic driving piece to achieve automatic drainage; the problem that a traditional infusion bag only depends on gravity for infusion and lacks drainage capacity is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical infusion apparatus, in particular to a medical injection infusion bag integrated with a self-suction drainage mechanism. Background Art

[0002] In the existing medical infusion process, conventional infusion bags rely on gravity to achieve liquid infusion. When it is necessary to drain and re-infuse the accumulated fluid in the body or to accurately deliver special medicines, they lack effective self-suction drainage function and are difficult to meet complex clinical needs, such as autologous blood transfusion after some trauma, drainage and reuse of fluid accumulated in specific cavities, etc. Therefore, it is necessary to develop an infusion bag with an integrated self-suction drainage mechanism to improve the convenience and functionality of infusion and drainage operations. Summary of the Invention

[0003] The object of the present invention is to provide a medical injection and infusion bag with an integrated self-suction drainage mechanism to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a medical injection and infusion bag with an integrated self-suction drainage mechanism, comprising an infusion bag and a hanging hole provided at the top front of the infusion bag, an injection tube and an infusion tube being fixedly connected to the left and right sides of the bottom of the infusion bag, respectively, and an elastic drainage bag being fixedly connected to the top of the inner wall of the infusion bag;

[0005] The bottom of the elastic drainage bag is fixedly connected to a connecting pipe, the outer surface of which is equipped with a one-way valve, the bottom of the connecting pipe is fixedly connected to a liquid processing chamber, the outside of which is connected to a temperature control module, and the top of the liquid processing chamber is fixedly equipped with a medical filter element;

[0006] The front and back sides of the elastic drainage bag are fixedly connected with connecting tubes, and the outer surfaces of the connecting tubes are slidably connected with micro elastic driving sheets.

[0007] Preferably, the temperature control module includes a semiconductor refrigeration plate, an electric heating wire, an insulation plate and a conductive tube, the conductive tube is fixedly connected to the left side of the temperature control module, the semiconductor refrigeration plate is fixedly connected to the back of the temperature control module, the insulation plate is fixedly connected to the front of the temperature control module, and the electric heating wire is fixedly installed on the inner wall of the temperature control module.

[0008] Preferably, the semiconductor refrigeration sheet and the electric heating wire are connected to an external medical temperature control device or a built-in rechargeable battery and a temperature control circuit through a conductive tube.

[0009] Preferably, the elastic drainage bag is made of medical natural rubber or synthetic rubber material, is formed by vulcanization or molding, and is sealed to the bag body, and the top end of the injection tube extends to the interior of the elastic drainage bag.

[0010] Preferably, the one-way valve is a medical-grade duckbill, spherical or valve-type one-way valve, which is fixed to the connecting pipe by heat sealing, inlaying or bonding.

[0011] Preferably, the micro elastic drive sheet is made of nickel-titanium memory alloy material or polyurethane elastomer, and is adhered to the outside of the elastic drainage bag through a medical-grade adhesive. One end of the micro elastic drive sheet is fixedly connected to the outer surface of the elastic drainage bag, and the other end is slidingly connected to the outer surface of the connecting tube, and the other end of the connecting tube is fixedly connected to the inner wall of the infusion bag.

[0012] Preferably, the elastic drainage bag is installed with a miniature pressure sensor for real-time monitoring of the internal pressure of the elastic drainage bag, as well as an electronically controlled adjustment unit with a built-in preset pressure threshold that can automatically adjust the force transmission strength of the linkage structure. The miniature pressure sensor is signal-connected to the electronically controlled adjustment unit. The electronically controlled adjustment unit is a miniature circuit board that integrates pressure signal processing, control algorithm and execution adjustment drive circuit, and is fixed in the bag body after being encapsulated with medical grade insulation.

[0013] Preferably, the liquid processing chamber is made of medical-grade transparent polycarbonate or medical silicone biocompatible material, and is bonded to the bottom of the connecting pipe by heat sealing or medical glue. The medical filter element is temperature-sensitive adsorption purification particles and medical-grade chitosan-based temperature-sensitive adsorption microspheres and poly N-isopropylacrylamide-based adsorption particles, with a filling density of 0.5-1g / cm³; the micro heating / cooling module is a semiconductor cooling / heating plate, which is connected to an external medical temperature control device or a built-in rechargeable battery and temperature control circuit via a wire.

[0014] Preferably, a gravity sensor is hung inside the hanging hole, and a hook is fixedly connected to the top of the gravity sensor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This medical injection infusion bag with an integrated self-suction drainage mechanism integrates functions such as self-suction drainage, liquid pretreatment, and pressure regulation. It can complete operations such as post-traumatic autologous blood transfusion and cavity effusion drainage without relying on external equipment. The elastic drainage sac and micro-elastic drive plate work together to achieve autonomous drainage, solving the problem of traditional infusion bags relying solely on gravity infusion and lacking drainage capacity, and greatly expanding the scope of clinical application.

[0017] 2. This medical injection and infusion bag with an integrated self-suction drainage mechanism uses temperature-sensitive adsorption purification particles in the liquid processing chamber. It can accurately adsorb impurities such as inflammatory mediators and tiny thrombi in the drainage fluid, reducing the potential harm of the reinfused fluid to the patient.

[0018] 3. The medical injection infusion bag with integrated self-suction drainage mechanism has a temperature control module that works in conjunction with a semiconductor refrigeration chip and an electric heating wire. It is connected to an external device or a built-in battery via a conductive tube. It can adjust the liquid temperature to close to the normal human body temperature, reducing adverse reactions such as vascular spasm and body temperature fluctuation caused by uncomfortable liquid temperature, and improving the patient's infusion comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 Schematic diagram of the overall structure of the infusion bag of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the elastic drainage bag of the present invention;

[0022] Figure 3 This is a schematic diagram of the side structure of the elastic drainage bag of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the temperature control module of the present invention.

[0024] In the figure: 1. Infusion bag; 2. Hanging hole; 3. Infusion tube; 4. Injection tube; 5. Elastic drainage bag; 501. Connecting tube; 502. Liquid processing chamber; 503. Temperature control module; 5031. Semiconductor refrigeration chip; 5032. Electric heating wire; 5033. Insulation board; 5034. Conductive tube; 504. Medical filter element; 505. One-way valve; 506. Connecting tube; 507. Micro elastic drive sheet; 6. Gravity sensor; 7. Hook. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] See also Figures 1-4 The present invention provides a technical solution: a medical injection and infusion bag with an integrated self-suction drainage mechanism, comprising an infusion bag 1 and a hanging hole 2 opened on the top front of the infusion bag 1, an injection tube 4 and an infusion tube 3 are fixedly connected to the left and right sides of the bottom of the infusion bag 1, an elastic drainage bag 5 is fixedly connected to the top of the inner wall of the infusion bag 1, the elastic drainage bag 5 is made of medical natural rubber or synthetic rubber material, and is sealed with the bag body after being formed by vulcanization or molding process, the top of the injection tube 4 extends to the inside of the elastic drainage bag 5, a gravity sensor 6 is hung inside the hanging hole 2, and a hook 7 is fixedly connected to the top of the gravity sensor 6. The gravity sensor 6 can monitor the weight changes of the liquid in the infusion bag in real time, and assist in judging the infusion progress and drainage rate. The specific principle of the gravity sensor 6 can be found in the patent document CN208031605U. The gravity sensor includes a gravity sensing module, an input module, a display module, a control module and a data cable connection port. The input module includes an increase weight button and a decrease weight button. The gravity sensor is connected to the bedside call machine through a data cable. The control module determines whether to send a signal to the bedside call machine for a call based on the weight input by the input module and the weight sensed by the gravity sensing module.

[0028] The bottom of the elastic drainage bag 5 is fixedly connected to a connecting tube 501, and a one-way valve 505 is installed on the outer surface of the connecting tube 501. The one-way valve 505 is a medical-grade valve-type one-way valve, which is fixed to the connecting tube 501 by heat sealing, inlaying or bonding. The one-way valve 505 only allows liquid to flow out from the inside of the elastic drainage bag 5 along the connecting tube 501. The bottom of the connecting tube 501 is fixedly connected to a liquid processing chamber 502, and the outside of the liquid processing chamber 502 is connected to a temperature control module 503. A medical filter element 504 is fixedly installed on the top of the liquid processing chamber 502. The front and back of the elastic drainage bag 5 are fixedly connected to connecting tubes 506, and the outer surface of the connecting tube 506 is slidably connected to a micro elastic driving piece 507.

[0029] The micro elastic drive sheet 507 is made of nickel-titanium memory alloy material and is adhered to the outside of the elastic drainage bag through medical-grade adhesive. One end of the micro elastic drive sheet 507 is fixedly connected to the outer surface of the elastic drainage bag 5, and the other end is slidingly connected to the outer surface of the connecting tube 506. The other end of the connecting tube 506 is fixedly connected to the inner wall of the infusion bag 1.

[0030] The elastic drainage bag 5 is internally installed with a micro pressure sensor for real-time monitoring of the internal pressure of the elastic drainage bag, as well as an electronically controlled adjustment unit with a built-in preset pressure threshold that can automatically adjust the force transmission strength of the linkage structure. The micro pressure sensor is connected to the electronically controlled adjustment unit by signal. The electronically controlled adjustment unit is a micro circuit board that integrates pressure signal processing, control algorithm and execution adjustment drive circuit, and is fixed in the bag body after being encapsulated with medical grade insulation.

[0031] Manually pressing the micro-elastic actuator 507 compresses the elastic drainage bladder 5 and expel air, closing the one-way valve 505. After releasing the actuator, the elastic drainage bladder 5 expands due to its own elasticity and the restoring force of the actuator, creating a negative pressure inside. The one-way valve 505 opens, and the external drainage fluid is filtered and temperature-controlled in the liquid processing chamber 502 before being drawn into the elastic drainage bladder 5 through the connecting tube 501. A micro-pressure sensor installed inside the elastic drainage bladder 5 monitors the pressure inside the bladder 5 in real time. When the pressure exceeds or falls below a preset threshold, the electronically controlled adjustment unit automatically adjusts the expansion and contraction of the micro-elastic actuator 507 according to the clinical scenario, such as 0.5-1kPa for intracranial fluid drainage and 1-2kPa for autologous blood transfusion, to ensure that the suction pressure meets clinical needs.

[0032] Liquid processing chamber 502 is made of medical-grade transparent polycarbonate and medical silicone biocompatible materials and is bonded to the bottom of connecting tube 501 by heat sealing or medical glue. Medical filter element 504 is composed of temperature-sensitive adsorption purification particles, medical-grade chitosan-based temperature-sensitive adsorption microspheres, and poly (N-isopropylacrylamide)-based adsorption particles, with a filling density of 0.5-1g / cm³. These materials have special adsorption properties and can specifically adsorb impurities such as inflammatory mediators and microthrombi in the drainage fluid as it flows through, thereby purifying the fluid and reducing the risks that may be caused by direct reinfusion or infusion.

[0033] During the self-suction drainage process, the liquid enters the liquid processing chamber 502 through the external drainage pipeline, is first purified by the medical filter element 504, and then enters the elastic drainage bag 5 through the connecting tube 501 to prepare for subsequent infusion.

[0034] The micro heating / cooling module is a semiconductor cooling / heating piece that is connected to an external medical temperature control device or a built-in rechargeable battery and temperature control circuit via wires.

[0035] The temperature control module 503 includes a semiconductor cooling plate 5031, an electric heating wire 5032, an insulation plate 5033 and a conductive tube 5034. The conductive tube 5034 is fixedly connected to the left side of the temperature control module 503. The semiconductor cooling plate 5031 is fixedly connected to the back of the temperature control module 503. The insulation plate 5033 is fixedly connected to the front of the temperature control module 503 to reduce the transfer of heat to the outside and improve the temperature control efficiency. The electric heating wire 5032 is fixedly installed on the inner wall of the temperature control module 503. The semiconductor cooling plate 5031 and the electric heating wire 5032 are connected to an external medical temperature control device or a built-in rechargeable battery and a temperature control circuit through the conductive tube 5034.

[0036] The semiconductor cooling chip 5031 and the electric heating wire 5032 are connected to an external medical temperature control device or a built-in rechargeable battery and temperature control circuit via a conductive tube 5034. When the liquid temperature needs to be increased, the electric heating wire 5032 operates, generating heat and transferring it to the liquid in the liquid processing chamber 502. When the liquid temperature needs to be lowered, the semiconductor cooling chip 5031 operates, absorbing heat from the liquid in the liquid processing chamber 502, thereby achieving precise regulation of the liquid temperature to meet clinical needs.

[0037] The temperature control module 503 is connected to the outside of the liquid processing chamber 502 and can directly apply the temperature regulation effect to the liquid in the liquid processing chamber 502, completing the temperature regulation while the liquid is purified, ensuring that the temperature of the liquid entering the elastic drainage bag 5 is appropriate.

[0038] Working Principle: Manually pressing the micro-elastic drive plate 507 compresses the elastic drainage bladder 5 and expel air, closing the one-way valve 505. Upon releasing the micro-elastic drive plate 507, the elastic drainage bladder 5 expands due to its own elasticity and the restoring force of the drive plate, creating a negative pressure inside. The one-way valve 505 opens, and the external drainage fluid is filtered and temperature-controlled in the liquid processing chamber 502 before being drawn into the elastic drainage bladder 5 through the connecting tube 501. A micro-pressure sensor monitors the pressure inside the elastic drainage bladder 5 in real time. When the pressure exceeds or falls below a preset threshold, the electronically controlled adjustment unit automatically adjusts the expansion and contraction of the micro-elastic drive plate 507 to ensure that the suction pressure meets clinical requirements. The drainage fluid is temporarily stored in the elastic drainage bladder 5, and can be mixed with other medications through the syringe 4 before being infused into the patient through the infusion tube 3.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A medical injection infusion bag with an integrated self-suction drainage mechanism, comprising an infusion bag (1) and a hanging hole (2) provided on the top of the front of the infusion bag (1), characterized in that: The left and right sides of the bottom of the infusion bag (1) are respectively fixedly connected to an injection tube (4) and an infusion tube (3), and the top of the inner wall of the infusion bag (1) is fixedly connected to an elastic drainage bag (5); The bottom of the elastic drainage bag (5) is fixedly connected to a connecting pipe (501), the outer surface of the connecting pipe (501) is installed with a one-way valve (505), the bottom of the connecting pipe (501) is fixedly connected to a liquid processing chamber (502), the outside of the liquid processing chamber (502) is connected to a temperature control module (503), and the top of the interior of the liquid processing chamber (502) is fixedly installed with a medical filter element (504); The front and back surfaces of the elastic drainage bag (5) are fixedly connected to connecting tubes (506), and the outer surface of the connecting tube (506) is slidably connected to a micro elastic driving sheet (507).

2. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: The temperature control module (503) comprises a semiconductor cooling plate (5031), an electric heating wire (5032), a heat insulating plate (5033) and a conductive tube (5034); the conductive tube (5034) is fixedly connected to the left side of the temperature control module (503); the semiconductor cooling plate (5031) is fixedly connected to the back side of the temperature control module (503); the heat insulating plate (5033) is fixedly connected to the front side of the temperature control module (503); and the electric heating wire (5032) is fixedly installed on the inner wall of the temperature control module (503).

3. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: The semiconductor refrigeration sheet (5031) and the electric heating wire (5032) are connected to an external medical temperature control device or a built-in rechargeable battery and a temperature control circuit via a conductive tube (5034).

4. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: The elastic drainage bag (5) is made of medical natural rubber or synthetic rubber material, is formed by vulcanization or molding, and is sealed with the bag body. The top end of the injection tube (4) extends into the interior of the elastic drainage bag (5).

5. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: The one-way valve (505) is a medical-grade duckbill, spherical or valve-type one-way valve, and is fixed to the connecting pipe (501) by heat sealing, inlaying or bonding.

6. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: The micro elastic drive sheet (507) is made of nickel-titanium memory alloy material or polyurethane elastomer and is attached to the outside of the elastic drainage bag via a medical-grade adhesive. One end of the micro elastic drive sheet (507) is fixedly connected to the outer surface of the elastic drainage bag (5), and the other end is slidably connected to the outer surface of the connecting tube (506). The other end of the connecting tube (506) is fixedly connected to the inner wall of the infusion bag (1).

7. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: The elastic drainage bag (5) is internally installed with a micro pressure sensor for real-time monitoring of the internal pressure of the elastic drainage bag, and an electric control regulating unit with a built-in preset pressure threshold and capable of automatically regulating the strength of the force transmitted by the linkage structure. The micro pressure sensor is connected to the electric control regulating unit by signal. The electric control regulating unit is a micro circuit board integrating pressure signal processing, control algorithm and execution regulation drive circuit, and is fixed in the bag body after being encapsulated with medical grade insulation.

8. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: The liquid processing chamber (502) is made of medical-grade transparent polycarbonate and medical silicone biocompatible materials, and is bonded to the bottom of the connecting pipe (501) by heat sealing or medical glue. The medical filter element (504) is temperature-sensitive adsorption purification particles and medical-grade chitosan-based temperature-sensitive adsorption microspheres and poly-N-isopropylacrylamide-based adsorption particles, with a filling density of 0.5-1g / cm³. The micro heating / cooling module is a semiconductor cooling / heating plate, which is connected to an external medical temperature control device or a built-in rechargeable battery and temperature control circuit via a wire.

9. The medical injection and infusion bag with integrated self-suction drainage mechanism according to claim 1, characterized in that: A gravity sensor (6) is hung inside the hanging hole (2), and a hook (7) is fixedly connected to the top of the gravity sensor (6).

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