Nutrition pump, infusion device, control valve and liquid control method

Abstract

The invention relates to a nutrition pump, an infusion device, a control valve and a liquid control method. The nutrition pump comprises a pump body and an infusion device, the infusion device comprises a control valve, and a pump wheel is arranged on the pump body; and the control valve comprises a valve body and a valve core which is in cooperative connection with the valve body, the valve bodycomprises a first input pipe and a second input pipe which are used for being connected to a liquid to be transfused, a cylindrical structure and an output pipe which is used for outputting the liquidto be transfused, one end of a switching shaft is connected to a motor, and the other end is connected to the valve core, so that the motor drives the valve core to rotate through the switching shaft. The nutrition pump can realize the free switching of two liquids, eliminates the liquid tainting risk in the nutrition pump feeding process, and has low cost and high precision.

Description

technical field

[0001] The invention relates to the field of medical devices, in particular to a nutritional pump, an infusion set, a control valve and a liquid control method. Background technique

[0002] A nutrition pump is a mechanical device used to infuse enteral nutrition to patients, using a disposable enteral nutrition device as a consumable. An automatic infusion device that precisely controls the infusion speed and volume, and infuses nutrient solution to patients through a nutrient pump in clinical practice. At present, the disposable enteral nutrient solution infusion set generally adopts a single tube, and the nutrient solution is generally thicker, and the pipeline is prone to blockage during use. Infusion of cleaning solution can effectively prevent pipeline blockage and replenish water to patients. At present, the double-tube nutrient solution infusion set on the market is used with the nutrient pump. There are two ways to switch between the nutrient solut...

Examples

Embodiment 1

[0059] A control valve applied to nutrient pumps, such as Figure 1-11 As shown, the control valve 10 includes a valve body and a spool that can be mated with the valve body. The valve body includes a first input pipe 113, a second input pipe 114, an output pipe 115, and first cylinders arranged side by side in parallel. shaped structure 111 and a second cylindrical structure 112; the valve core includes a first valve core 100 that can be accommodated in the first cylindrical structure 111 and a second valve core that can be accommodated in the second cylindrical structure 112 core 101; the inner walls of the cross section of the first cylindrical structure 111 and the second cylindrical structure 112 are circular, and the outer walls of the cross section of the first valve core 100 and the second valve core 101 are circular, so that the valve core can be placed in the cylinder Rotate freely in the shape structure.

[0060] The side wall of the first cylindrical structure 111...

Embodiment 2

[0085] A kind of enteral nutrient solution infusion set, such as Figure 12 As shown, it includes the control valve 10 described in Embodiment 1. The first input pipe 113 in the control valve 10 is connected to the first upper conduit 11 for delivering liquid, and the second input pipe 114 is connected to the first upper conduit 11 for delivering liquid. The second upper conduit 12 of the liquid is connected, and the output pipe 115 is connected with the lower conduit 25 to output the liquid from the lower conduit 25, and the lower conduit 25 is connected with the joint 20 for connecting with the human body, and the joint 20 is connected with the human body to allow liquids to enter the body. The connector 20 is preferably a Luer connector, which is convenient to use and has a good effect.

[0086] The first upper conduit 11 and the second upper conduit 12 can be respectively connected with a nutrient solution 13 and a cleaning solution 14 so that these two fluids enter the c...

Embodiment 3

[0092] Such as Figure 14-20 Shown, a kind of nutrition pump, it comprises pump body 1 and the infusion set as described in embodiment 2.

[0093] The infusion set includes the control valve 10 as described in Example 1.

[0094] A pump wheel 34 is installed on the pump body 1 , and the downcomer bypasses the pump wheel and passes out of the pump body 1 .

[0095] Two motors and two adapter shafts 27, one end of one adapter shaft 27 is connected to the first spool 100 so that the adapter shaft 27 drives the valve core to rotate, and the other end is connected to one of the motors so that the motor drives the adapter The shaft 27 rotates. Similarly, another adapter shaft 27 is connected with the second valve core 101 and another motor so that the motor drives the valve core to rotate.

[0096] The adapter shaft 27 includes a body 28, the top surface of the body 28 is fixedly connected to the motor, and the center of the bottom surface of the body 28 is horizontally provided w...

technical field

[0001] The invention relates to the field of medical devices, in particular to a nutritional pump, an infusion set, a control valve and a liquid control method. Background technique

[0002] A nutrition pump is a mechanical device used to infuse enteral nutrition to patients, using a disposable enteral nutrition device as a consumable. An automatic infusion device that precisely controls the infusion speed and volume, and infuses nutrient solution to patients through a nutrient pump in clinical practice. At present, the disposable enteral nutrient solution infusion set generally adopts a single tube, and the nutrient solution is generally thicker, and the pipeline is prone to blockage during use. Infusion of cleaning solution can effectively prevent pipeline blockage and replenish water to patients. At present, the double-tube nutrient solution infusion set on the market is used with the nutrient pump. There are two ways to switch between the nutrient solut...

Examples

Embodiment 1

[0059] A control valve applied to nutrient pumps, such as Figure 1-11 As shown, the control valve 10 includes a valve body and a spool that can be mated with the valve body. The valve body includes a first input pipe 113, a second input pipe 114, an output pipe 115, and first cylinders arranged side by side in parallel. shaped structure 111 and a second cylindrical structure 112; the valve core includes a first valve core 100 that can be accommodated in the first cylindrical structure 111 and a second valve core that can be accommodated in the second cylindrical structure 112 core 101; the inner walls of the cross section of the first cylindrical structure 111 and the second cylindrical structure 112 are circular, and the outer walls of the cross section of the first valve core 100 and the second valve core 101 are circular, so that the valve core can be placed in the cylinder Rotate freely in the shape structure.

[0060] The side wall of the first cylindrical structure 111...

Embodiment 2

[0085] A kind of enteral nutrient solution infusion set, such as Figure 12 As shown, it includes the control valve 10 described in Embodiment 1. The first input pipe 113 in the control valve 10 is connected to the first upper conduit 11 for delivering liquid, and the second input pipe 114 is connected to the first upper conduit 11 for delivering liquid. The second upper conduit 12 of the liquid is connected, and the output pipe 115 is connected with the lower conduit 25 to output the liquid from the lower conduit 25, and the lower conduit 25 is connected with the joint 20 for connecting with the human body, and the joint 20 is connected with the human body to allow liquids to enter the body. The connector 20 is preferably a Luer connector, which is convenient to use and has a good effect.

[0086] The first upper conduit 11 and the second upper conduit 12 can be respectively connected with a nutrient solution 13 and a cleaning solution 14 so that these two fluids enter the c...

Embodiment 3

[0092] Such as Figure 14-20 Shown, a kind of nutrition pump, it comprises pump body 1 and the infusion set as described in embodiment 2.

[0093] The infusion set includes the control valve 10 as described in Example 1.

[0094] A pump wheel 34 is installed on the pump body 1 , and the downcomer bypasses the pump wheel and passes out of the pump body 1 .

[0095] Two motors and two adapter shafts 27, one end of one adapter shaft 27 is connected to the first spool 100 so that the adapter shaft 27 drives the valve core to rotate, and the other end is connected to one of the motors so that the motor drives the adapter The shaft 27 rotates. Similarly, another adapter shaft 27 is connected with the second valve core 101 and another motor so that the motor drives the valve core to rotate.

[0096] The adapter shaft 27 includes a body 28, the top surface of the body 28 is fixedly connected to the motor, and the center of the bottom surface of the body 28 is horizontally provided w...

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