CN217908504U

CN217908504U - Simple blood transfusion and transfusion pressure bag

Info

Publication number: CN217908504U
Application number: CN202122918434.8U
Authority: CN
Inventors: 李海燕; 全冬梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-11-29
Anticipated expiration: 2031-11-25

Abstract

The utility model provides a simple and convenient blood transfusion and infusion pressurizing bag, which comprises a pressurizing bag body, wherein the pressurizing bag body is made of transparent elastic material, the pressurizing bag body is connected with a balloon used for inflating the pressurizing bag body through an air duct, and the connecting part of the balloon and the air duct is provided with a one-way valve; the air release pipe is arranged on the air guide pipe and communicated with the air guide pipe, the air release pipe is hollow inside, and a plurality of through holes extending into the air release pipe are circumferentially arranged on the surface of the air release pipe; the pressure relief assembly is arranged in the air leakage pipe and is used for acting when the balloon outputs excessive gas into the pressurizing bag body so as to enable the gas in the pressurizing bag body to escape from the through hole; the pressure regulating assembly is arranged in the air leakage pipe and connected with the pressure relief assembly, so that the air pressure in the pressurizing bag body is controllable.

Description

Simple blood transfusion and transfusion pressure bag

Technical Field

The utility model belongs to medical appliances, in particular to a simple blood transfusion and infusion pressurizing bag.

Background

The infusion pressurization bag is mainly used for rapid pressurization input during blood transfusion and infusion to help bagged liquid such as blood, blood plasma, cardioplegia and the like to enter a human body as soon as possible, can also continuously pressurize heparin-containing liquid to wash a built-in artery pressure measurement tube, is convenient to use, safe and reliable, is a necessary product for battlefield, field and clinical emergency treatment, is used for a medical unit to adopt an air pressure method during emergency treatment of patients, plays a role in accelerating infusion for the patients who need to input liquid medicine or blood plasma in an adding manner, simultaneously lightens the labor intensity of doctors and nurses, is suggested to be used for the same patient, and is widely applied to emergency blood transfusion, infusion and various invasive artery pressure monitoring in various clinical departments such as emergency departments, operating rooms and the like.

The pressurizing bag mainly comprises a gas storage bag, a gas pipe, a gas valve and an inflation ball, when the pressurizing bag is used, gas is sent into the gas storage bag through the inflation ball to be expanded, medical workers can observe the pressure value in the gas storage bag through a pressure gauge and consider how much gas is sent into the gas storage bag according to the pressure value, but the gas transmission amount of the inflation ball is difficult to control, so that too much or too little gas is often sent into the gas storage bag, and the pressurizing bag is not favorable for normal operation of infusion and blood transfusion.

SUMMERY OF THE UTILITY MODEL

The utility model provides a simple and convenient blood transfusion and infusion pressurization bag, which aims to solve the problem that the quantity of gas delivered to a gas storage bag is difficult to control.

The utility model is realized in such a way that the simple blood transfusion and infusion pressurizing bag comprises a pressurizing bag body which is made of transparent elastic material and is used for extruding a transfusion bag or a blood transfusion bag arranged inside the pressurizing bag body, the pressurizing bag body is connected with a balloon used for inflating the pressurizing bag body through an air duct, and the connecting part of the balloon and the air duct is provided with a one-way valve;

the air leakage pipe is arranged on the air guide pipe and communicated with the air guide pipe, the air leakage pipe is hollow inside, and a plurality of through holes extending into the air leakage pipe are circumferentially arranged on the surface of the air leakage pipe;

the pressure relief assembly is arranged inside the air leakage pipe and is used for acting when the balloon outputs excessive gas into the pressurization bag body so as to enable the gas in the pressurization bag body to escape from the through hole;

the pressure regulating subassembly, the pressure regulating subassembly sets up the inside of disappointing the pipe and with pressure release subassembly connects, the pressure regulating subassembly is used for the drive the pressure release subassembly is in the intraductal motion of disappointing to change pressure release subassembly's compressive capacity.

Furthermore, the pressure regulating assembly comprises a knob rotatably mounted outside the air release pipe, a screw rod connected with the knob and rotatably mounted inside the air release pipe, a threaded sleeve in threaded fit with the screw rod, and a first piston connected with the air release pipe through a limiting structure and connected with the threaded sleeve;

the first piston is fixedly connected with the threaded sleeve through a connecting rod.

Furthermore, the limiting structure comprises limiting blocks symmetrically and fixedly installed on the inner wall of the air leakage pipe and two grooves formed in the first piston, and the grooves are matched with the limiting blocks.

Furthermore, the pressure relief assembly comprises a second piston arranged in the air escape pipe in a sliding manner, an expansion structure connecting the first piston and the second piston, and a spring sleeved on the expansion structure;

one end of the spring is fixedly connected with the first piston, and the other end of the spring is fixedly connected with the second piston.

Furthermore, the telescopic structure comprises a fixed sleeve fixedly arranged on the first piston and two telescopic shafts fixedly arranged on the second piston, and the telescopic shafts can slide in the fixed sleeve.

Furthermore, two bulges are symmetrically arranged on the inner wall of one end, close to the air duct, of the air escape pipe, and the bulges are abutted to the second piston.

Compared with the prior art, the beneficial effects of the utility model are that:

because the existing pressurizing bag is difficult to accurately control when applying air pressure, the speed of infusion or blood transfusion is difficult to achieve the expected effect, and the air pressure in the pressurizing bag body is effectively controlled by arranging the pressure regulating component and the pressure relief component.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the invention.

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

Fig. 1 is a schematic structural diagram provided by the present invention.

Fig. 2 is an enlarged view of a structure at a in fig. 1.

Figure 3 is the internal structure schematic diagram of the air escape pipe provided by the utility model.

Fig. 4 is an enlarged view of the structure at B in fig. 3.

Fig. 5 is a schematic three-dimensional structure of the air escape pipe provided by the present invention.

Reference numerals:

1-a pressurizing bag body, 2-an air duct, 3-a balloon, 4-an air escape tube, 5-a knob, 6-a screw rod, 7-a threaded sleeve, 8-a connecting rod, 9-a limiting block, 10-a piston, 11-a piston, 12-a bulge, 13-a fixed sleeve, 14-a spring, 15-a telescopic shaft and 16-a through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to effectively explain the embodiments of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1-5, the present invention provides a simple pressurizing bag for blood transfusion and infusion to solve the problem that the amount of gas delivered to the gas storage bag is difficult to control.

Example one

A simple blood transfusion and infusion pressurization bag comprises:

the pressurizing bag comprises a pressurizing bag body 1, wherein the pressurizing bag body 1 is made of transparent elastic materials and is used for extruding an infusion bag or a blood transfusion bag arranged in the pressurizing bag body 1, the pressurizing bag body 1 is connected with a balloon 3 used for inflating the pressurizing bag body 1 through an air duct 2, and a one-way valve is arranged at the connecting part of the balloon 3 and the air duct 2;

the air leakage pipe 4 is arranged on the air guide pipe 2 and communicated with the air guide pipe 2, the air leakage pipe 4 is hollow inside, and a plurality of through holes 16 extending into the air leakage pipe 4 are circumferentially arranged on the surface of the air leakage pipe 4.

The air leakage pipe 4 is hollow and has a cylindrical inner wall.

The pressure relief assembly is arranged inside the air release pipe 4 and is used for acting when the balloon 3 outputs excessive gas into the pressurizing bag body 1 so as to enable the gas in the pressurizing bag body 1 to escape from the through hole 16;

the pressure regulating subassembly, the pressure regulating subassembly sets up the inside of disappointing pipe 4 and with the pressure release subassembly is connected, the pressure regulating subassembly is used for the drive the pressure release subassembly is in disappointing pipe 4 internal motion to change pressure release subassembly's compressive capacity

In this embodiment, before using, set up the pressure value that bears in the pressurization bag body 1 through the pressure regulating subassembly, through sacculus 3 to the internal conveyor gas of pressurization bag body 1, make its inflation to the infusion bag of arranging in pressurization bag body 1 is extruded, in order to accelerate infusion bag's infusion speed, when the atmospheric pressure in the pressurization bag body 1 reaches the default, excessive gas acts on the pressure release subassembly, makes the action of pressure release subassembly, utilizes the through-hole 16 of setting on disappointing pipe 4 to discharge gas.

The balloon 3 is introduced in the prior art, the balloon 3 is also called a rubber capsule, that is, a flexible rubber capsule is filled with compressed air or an aqueous medium, the elastic effect is realized by utilizing the compressibility of air and the fluidity of water, two ends of the balloon 3 are respectively provided with a one-way valve (not shown in the figure), the one-way valves have one-way conductivity, one of the one-way valves is connected with the pressurizing bag body 1 through an air duct 2, the other one-way valve is communicated with the outside air, when the balloon is compressed, the gas in the balloon 3 enters the pressurizing bag body 1 through the one-way valve, and when the balloon 3 is released, the gas in the pressurizing bag body 1 cannot flow back through the one-way valve, but the outside gas enters the balloon 3 under the action of the other one-way valve, and the process is repeated to realize the gas delivery into the pressurizing bag body 1.

The above-mentioned pressurizing bag body 1 is fixedly provided with a gas valve which is communicated with the pressurizing bag body 1, and after the use is finished, the gas in the pressurizing bag body 1 can be released through the gas valve.

Example two

The pressure regulating assembly comprises a knob 5 which is rotatably arranged outside the air leakage pipe 4, a screw rod 6 which is connected with the knob 5 and is rotatably arranged inside the air leakage pipe 4, a threaded sleeve 7 which is in threaded fit with the screw rod 6, and a first piston 10 which is connected with the air leakage pipe 4 through a limiting structure and is connected with the threaded sleeve 7;

the first piston 10 is fixedly connected with the threaded sleeve 7 through a connecting rod 8;

the limiting structure comprises a limiting block 9 which is symmetrically and fixedly installed on the inner wall of the air escape pipe 4 and two grooves which are formed in the first piston 10, and the grooves are matched with the limiting block 9.

In this embodiment, the knob 5 drives the screw rod 6 to move, so that the threaded sleeve 7 in threaded fit with the screw rod 6 moves in the axial direction of the screw rod 6, and the threaded sleeve 7 drives the first piston 10 to move through the connecting rod 8, thereby changing the stroke of the pressure relief assembly, and enabling the pressure value of the air pressure borne by the pressure relief assembly to be adjustable.

Through stopper 9 and the recess that sets up, prevent at the pivoted in-process of lead screw 6, threaded sleeve 7 and a piston 10 follow lead screw 6 and take place the rotation, and make pressure regulating assembly's regulatory function lose.

Furthermore, a sealing ring (not shown) is arranged at the connecting part of the first piston 10 and the inner wall of the air release pipe 4 to improve the air tightness between the first piston 10 and the inner wall of the air release pipe 4.

EXAMPLE III

The pressure relief assembly comprises a second piston 11 arranged in the air leakage pipe 4 in a sliding mode, an expansion structure connected with the first piston 10 and the second piston 11, and a spring 14 sleeved on the expansion structure;

one end of the spring 14 is fixedly connected with the first piston 10, and the other end of the spring is fixedly connected with the second piston 11;

the telescopic structure comprises a fixed sleeve 13 fixedly arranged on the first piston 10 and two telescopic shafts 15 fixedly arranged on the second piston 11, and the telescopic shafts 15 can slide in the fixed sleeve 13;

the air escape pipe 4 is close to two bulges 12 are symmetrically arranged on the inner wall of one end of the air duct 2, and the bulges 12 are abutted to the second piston 11.

In this embodiment, in an initial state, the second piston 11 isolates the communication relationship between the through hole 16 on the air release tube 4 and the air duct 2, when the balloon 3 continuously conveys air into the pressurizing bag body 1, the air pressure in the pressurizing bag body 1 is increased until the air pressure pushes the second piston 11 to push the pressurizing bag body to move, the spring 14 is compressed, when the second piston 11 moves to a certain degree, the through hole 16 on the air release tube 4 is communicated with the air duct 2, redundant air in the pressurizing bag body 1 escapes from the through hole 16, and in the process that the air in the pressurizing bag body 1 is restored to a preset value, the spring 14 releases elastic potential energy, and the second piston 11 is used for isolating the communication relationship between the through hole 16 and the air duct 2.

Through the telescopic shaft 15 and the fixed sleeve 13, the second piston 11 cannot rotate in the moving process, and excessive friction is generated with the inner wall of the air release pipe 4, so that the air tightness between the two is reduced.

It should be noted that a sealing ring is also arranged between the second piston 11 and the air release pipe 4 to ensure good air tightness therebetween during operation.

In this application, realize the pressure regulating effect like this between pressure regulating subassembly and the pressure release subassembly: first, there is a Hu Ke law on the spring 14, that is, F = K · S (F represents force, K represents elastic coefficient, S represents distance that the spring is stretched or compressed, and K is a constant value, the greater the amount of compression of the spring 14, the greater the generated force, and in an initial state, the protrusion 12 abuts against the piston two 11, that is, the spring 14 is in a compressed state, and by rotating the knob 5, the threaded sleeve 7 moves in the axial direction of the lead screw 6 to drive the piston one 10 to move, and the piston one 10 moves, the amount of compression of the spring 14 is changed, so that the elastic force of the spring 14 is changed, and the air pressure in the air duct 2 directly acts on the piston two 10, as can be known from the air pressure formula F = P/S (P represents atmospheric pressure, F represents force, and S represents force area), the compressed area of the piston two 11 is constant, and the elastic force of the spring 14 is changed, and the corresponding pressure value P is changed.

Taking an embodiment combining all the features described in the present application as an example, by rotating the knob 5, the screw rod 6 is driven to rotate, so that the threaded sleeve 7 moves in the axial direction of the screw rod 6 to drive the first piston 10 to move, and the elastic force of the spring 14 is changed, so as to adjust the preset pressure value of the pressurizing bag body 1, then gas is delivered into the pressurizing bag body 1 through the balloon 3, until the pressure generated by the gas in the pressurizing bag body 1 acts on the second piston 11, the second piston 11 is pushed to move, so that the air escapes from the through hole 16, so that the air pressure in the pressurizing bag body 1 is restored to the preset value, and in the process of pressure restoration, the spring 14 releases elastic potential energy, and the through hole 16 is plugged.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A simple blood transfusion and infusion pressurization bag is characterized by comprising:

the pressurizing bag comprises a pressurizing bag body (1), wherein the pressurizing bag body (1) is made of transparent elastic materials and is used for extruding an infusion bag or a blood transfusion bag arranged in the pressurizing bag body, the pressurizing bag body (1) is connected with a saccule (3) used for inflating the pressurizing bag body (1) through an air duct (2), and a one-way valve is arranged at the connecting part of the saccule (3) and the air duct (2);

the air leakage pipe (4) is arranged on the air guide pipe (2) and communicated with the air guide pipe (2), the air leakage pipe (4) is hollow inside, and a plurality of through holes (16) extending into the air leakage pipe (4) are circumferentially arranged on the surface of the air leakage pipe (4);

the pressure relief assembly is arranged inside the air leakage pipe (4) and is used for acting when the balloon (3) outputs excessive gas into the pressurization bag body (1) so as to enable the gas in the pressurization bag body (1) to escape from the through hole (16);

the pressure regulating assembly is arranged in the air leakage pipe (4) and connected with the pressure relief assembly, and the pressure regulating assembly is used for driving the pressure relief assembly to move in the air leakage pipe (4) so as to change the pressure bearing capacity of the pressure relief assembly.

2. The simple pressurizing bag for blood transfusion and infusion according to claim 1, wherein the pressure regulating assembly comprises a knob (5) rotatably mounted on the outside of the air release tube (4), a lead screw (6) connected with the knob (5) and rotatably mounted on the inside of the air release tube (4), a threaded sleeve (7) in threaded fit with the lead screw (6), and a piston number one (10) connected with the air release tube (4) through a limiting structure and connected with the threaded sleeve (7);

the first piston (10) is fixedly connected with the threaded sleeve (7) through a connecting rod (8).

3. The simple pressurizing bag for blood transfusion and fluid infusion as set forth in claim 2, wherein the limiting structure comprises a limiting block (9) symmetrically and fixedly mounted on the inner wall of the air release pipe (4), and two grooves formed on the first piston (10), and the grooves are matched with the limiting block (9).

4. The simple pressurizing bag for blood transfusion and fluid infusion as set forth in claim 3, wherein said pressure relief assembly comprises a second piston (11) slidably disposed in said air release tube (4), a telescopic structure connecting said first piston (10) and said second piston (11), and a spring (14) sleeved on said telescopic structure;

one end of the spring (14) is fixedly connected with the first piston (10), and the other end of the spring is fixedly connected with the second piston (11).

5. The simple pressurizing bag for blood and liquid transfusions as claimed in claim 4, characterized in that said telescopic structure comprises a fixed sleeve (13) fixedly mounted on said first piston (10), two telescopic shafts (15) fixedly mounted on said second piston (11), said telescopic shafts (15) being slidable inside the fixed sleeve (13).

6. The simple pressurizing bag for blood transfusion and infusion as set forth in claim 5, characterized in that two protrusions (12) are symmetrically installed on the inner wall of one end of the air-guide tube (2) of the air-release tube (4), and the protrusions (12) are abutted against the piston II (11).