Application pump for infusion

Abstract

The present invention discloses an infusion dressing pump, which comprises: a base, an upper cover, a medicine storage container, a control circuit board and a driving assembly, wherein the top of the base extends upwardly out of a mounting seat, the medicine storage container is detachably inserted in the mounting seat, the driving assembly is connected to the medicine storage container, the control circuit board is mounted on the base, the on switch of the control circuit board is arranged on a side close to the medicine storage container, the control circuit board is connected to and controls the operation of the driving assembly, and the upper cover is closed on the base and covers the top of the control circuit board and the driving assembly. The purpose of the present invention is to provide an infusion dressing pump with reasonable structure, convenient operation, relatively small space, small action stroke, high positioning accuracy and prevention of accidental touch.

Description

Technical Field

[0001] The present invention relates to the field of medical supplies, and more particularly to an application pump for infusion. Background Art

[0002] An infusion pump is an infusion device that can control the infusion flow rate so that the infusion speed and dosage meet user needs.

[0003] The infusion pump consists of a pump, a small syringe and an infusion tube connected to it. The small syringe contains liquid medicine. After the syringe is loaded into the pump, the guide needle at the front end of the connected infusion tube is inserted into the patient's subcutaneous tissue with a needle injector, and then the battery-driven spiral motor of the infusion pump pushes the piston of the small syringe to infuse the medicine into the patient's body.

[0004] The basic purpose of the insulin pump in the infusion pump is to simulate the secretion function of the pancreas, continuously push insulin into the user's subcutaneous tissue according to the dosage required by the human body, maintain blood sugar stability throughout the day, and achieve the purpose of controlling diabetes. As one of the development directions of the infusion pump, the patch pump has a control switch for the patch pump in the prior art, which is usually located on the surface or side of the device. The user needs to turn on the control switch when using it. This structure has the following defects: Since the switch is located outside, the device is large as a whole and the structure is not compact. At the same time, it is troublesome for the user to turn on the device after the patch pump is installed, and the operation is inconvenient; since the patch pump needs to push the drug to the user for a long time, if the user accidentally touches the switch to turn off the device, it is easy to cause the patient's input drug not to be infused, which is dangerous. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide an application pump for infusion which has a reasonable structure, is easy to operate, requires a relatively small space, has a small movement stroke, has high positioning accuracy, and prevents accidental touch.

[0006] According to one aspect of the present invention, there is provided an infusion patch pump, which includes: a base, an upper cover, a medicine reservoir, a control circuit board and a drive assembly, wherein a mounting seat is extended upward from the top of the base, the medicine reservoir is detachably inserted in the mounting seat, the drive assembly is connected to the medicine reservoir, the control circuit board is mounted on the base, the on switch of the control circuit board is arranged on a side close to the medicine reservoir, the control circuit board is connected to and controls the operation of the drive assembly, and the upper cover is closed on the base and covers the control circuit board and the top of the drive assembly.

[0007] In some embodiments, the mounting seat includes a placement cavity, a guide rail, and a notch, the inner wall of the placement cavity is provided with at least one guide rail, and the notch is connected to the placement cavity.

[0008] In some embodiments, the on switch protrudes on a side of the control circuit board close to the medicine reservoir, is installed in the notch and extends into the placement cavity, interferes with the installation circuit of the medicine reservoir, and the medicine reservoir presses the on switch to connect the circuit to control the operation of the drive component.

[0009] In some embodiments, a bracket is provided on a side of the base away from the mounting seat, two brackets are provided, and the control circuit board is mounted on the brackets.

[0010] In some embodiments, the driving assembly includes: a motor, a screw, a push rod, a battery and a fixed shell, the battery and the motor are both arranged in the fixed shell, the output end of the motor is connected to the screw, and the push rod is sleeved on the outside of the screw.

[0011] In some embodiments, the battery is connected to the control circuit board and the motor and supplies power to the control circuit board and the motor, the control circuit board is connected to the motor, and the control circuit board drives the motor to run or stop.

[0012] In some embodiments, a mounting hole is provided in the push rod, an internal thread is provided in the mounting hole, the screw rod cooperates with the internal thread in the mounting hole, the motor drives the screw rod to rotate, and the screw rod drives the push rod to move on the guide rail.

[0013] In some embodiments, the motor is a DC motor or a stepper motor.

[0014] In some embodiments, at least one guide groove is disposed on the outer side of the push rod, the number of the guide grooves is consistent with the number of the guide rails, and the guide groove is sleeved on the guide rails.

[0015] The patch pump for infusion of the present invention arranges the on switch in the placement cavity, and uses the on switch to be pressed when the medicine reservoir is installed to control the circuit board to drive the motor to work. Therefore, as long as the medicine reservoir is installed, the control circuit will be turned on and operated. Through such a technical solution, the structure of the present invention is more compact and the operation is more convenient for users. At the same time, since the on switch is arranged inside, it can prevent the user from accidentally touching it in normal life, causing it to be turned off without the user knowing, resulting in the insulin not being injected, causing danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an application pump for infusion of the present invention;

[0017] Figure 2 is a partial cross-sectional view of an application pump for infusion of the present invention;

[0018] Figure 3 is a partial cross-sectional view of an application pump for infusion of the present invention;

[0019] Figure 4 It is a schematic structural diagram of a base of an application pump for infusion of the present invention;

[0020] Figure 5 It is a schematic structural diagram of a driving assembly of an application pump for infusion of the present invention. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and equivalent changes or substitutions in functions, methods or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meaning of the terms can be understood according to the specific circumstances.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the infusion application pump of the present invention comprises: a base 1, an upper cover 2, a medicine storage container 3, a control circuit board 4 and a drive assembly 5, the top of the base 1 extends upwardly out of a mounting seat 11, the medicine storage container 3 is detachably inserted in the mounting seat 11, the drive assembly 5 is connected to the medicine storage container 3, the control circuit board 4 is installed on the base 1, the on switch 6 of the control circuit board 4 is arranged on a side close to the medicine storage container 3, the control circuit board 4 is connected to and controls the operation of the drive assembly 5, and the upper cover 2 is covered on the base 1 and covers the top of the control circuit board 4 and the drive assembly 5. By arranging the on switch 6 in the re-placement cavity 111, the on switch 6 is pressed when the medicine storage container 3 is installed to realize the operation of the control circuit board 4 drive motor 51, so as long as the medicine storage container 3 is installed, the control circuit will be turned on and operated. Through such a technical solution, the structure of the present invention is more compact, and the operation is more convenient when the user uses it. At the same time, since the on switch 6 is arranged inside, it is prevented from being accidentally touched by the user in normal life, resulting in closure, and the user is not aware of it, resulting in the failure of the insulin to be injected, causing danger.

[0024] like Figure 4 As shown, the mounting seat 11 includes a placement cavity 111, a guide rail 112 and a notch 113. The inner wall of the placement cavity 111 is provided with at least one guide rail 112, and the notch 113 is connected to the placement cavity 111. The placement cavity 111 is used to install the medicine storage 3. Usually, the notch 113 is arranged at one end of the bottom of the placement cavity 111 close to the driving assembly 5, so as to complete the pressing of the switch when the installation of the medicine storage 3 is almost completed, and then the switch 6 is turned on to connect the control circuit.

[0025] The switch 6 protrudes from the side of the control circuit board 4 near the medicine storage 3, and the switch 6 is installed in the notch 113 and extends into the placement cavity 111. The switch 6 interferes with the installation circuit of the medicine storage 3, and the medicine storage 3 presses the switch 6 to connect the circuit to control the operation of the drive assembly 5. The switch 6 is extended into the placement cavity 111 through the notch 113. When the medicine storage 3 is installed, the switch 6 is pressed to realize the operation of the control circuit board 4 drive motor 51. Therefore, as long as the medicine storage 3 is installed, the control circuit will be connected to the operation. Through such a technical solution, the structure of the present invention is more compact and the operation is more convenient for users to use. The switch 6 forms a smaller angle with the inner wall of the placement cavity 111, so that the medicine storage 3 is gradually pressed when inserted from the top of the placement cavity 111, so that the switch 6 is connected to the control circuit. If the angle between the switch 6 and the inner wall of the placement cavity 111 is too large, it will cause the switch 6 to block the movement of the medicine storage 3 and fail to achieve the purpose of opening the switch.

[0026] Of course, the switch 6 does not refer to an electronic component that can open a circuit, interrupt current, or flow current to other circuits in a narrow sense, but may also include other ways to enable the control circuit board 4 to drive the motor 51 to start or stop. For example, the switch 6 may also be a sensor, and when the sensor detects the medicine reservoir, it will feed back a signal to the control circuit board 4, and the control circuit board 4 will drive the motor 51 to start or stop. Of course, such a solution requires a battery to power the control circuit board 4 and the switch 6 all the time.

[0027] A bracket 12 is provided on the base 1 at one side away from the mounting seat 11. Two brackets 12 are provided, and the control circuit board 4 is mounted on the brackets 12. The brackets 12 facilitate the installation of the control circuit board 4. In order to facilitate production, the brackets 12 and the mounting seat 11 are integrally formed with the base 1.

[0028] The guide rails 112 are preferably arranged in two symmetrical positions on the inner wall of the placement cavity 111 , and the guide rails 112 are used to facilitate limiting the moving position of the push rod 53 .

[0029] like Figure 5 As shown, the driving assembly 5 includes: a motor 51, a screw 52, ​​a push rod 53, a battery 54 and a fixed shell 55. The battery 54 and the motor 51 are both arranged in the fixed shell 55. The output end of the motor 51 is connected to the screw 52, ​​and the push rod 53 is sleeved on the outer side of the screw 52. The battery 54 is used to power the motor 51 and the control circuit board 4, the motor 51 drives the screw 52 to rotate, the push rod 53 cooperates with the screw 52, ​​and then the screw 52 rotates under the drive of the motor 51, and then the push rod 53 moves along the guide rail 112 to achieve the infusion of the liquid medicine in the medicine storage 3.

[0030] The battery 54 is connected to the control circuit board 4 and the motor 51 and supplies power to the control circuit board 4 and the motor 51. The control circuit board 4 is connected to the motor 51 and drives the motor 51 to run or stop. The infusion parameters are set in the control circuit board 4, and the control circuit board 4 only needs to drive the motor 51 to infuse according to the specified parameters.

[0031] The push rod 53 is provided with a mounting hole 56, and the mounting hole 56 is provided with an internal thread. The screw rod 52 cooperates with the internal thread in the mounting hole 56. The motor 51 drives the screw rod 52 to rotate, and the screw rod 52 drives the push rod 53 to move on the guide rail 112. The motor 51 drives the screw rod 52 to rotate, and the push rod 53 cooperates with the screw rod 52. Then, the screw rod 52 rotates under the drive of the motor 51, and then the push rod 53 moves along the guide rail 112, so as to achieve the infusion of the liquid medicine in the medicine storage device 3.

[0032] At least one guide groove 57 is provided on the outer side of the push rod 53. The guide groove 57 is sleeved on the guide rail 112. The number of the guide grooves 57 is the same as the number of the guide rails 112, and both are provided with two. The movement position of the push rod 53 is limited by the cooperation between the guide groove 57 and the guide rail 112.

[0033] Motor 51 is a DC motor or a stepper motor. The infusion of insulin requires a minimum infusion volume of 0.001 ml (i.e. 0.1 U) per hour, and it is evenly divided every hour. This is a very precise infusion requirement. There is a concept that needs to be clarified here: a motor 51 cannot meet the infusion accuracy and safety requirements of the infusion pump. An infusion mechanism consisting of a motor 51, a reducer, an encoder, and a push plate is required, and a complete system is formed to ensure it in conjunction with the underlying firmware and algorithms. Assuming an inner diameter of 12 mm, a lead screw pitch of 0.5 mm, and a reduction ratio of 700:1, combined with factors such as positive and negative deviations and the resolution of motor 51, the control accuracy can reach 2%. If the reduction ratio is changed to 500:1, the accuracy is 3.3%, and the encoder needs to use a photoelectric encoder. The above measures are used to ensure the accuracy of the infusion amount.

[0034] The above are only some embodiments of the present invention. It should be pointed out that for ordinary technicians in this field, other modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An application pump for infusion, characterized in that: include: A base, an upper cover, a medicine reservoir, a control circuit board and a drive assembly, wherein a mounting seat is extended upward from the top of the base, the medicine reservoir is detachably inserted in the mounting seat, the drive assembly is connected to the medicine reservoir, the control circuit board is mounted on the base, the on switch of the control circuit board is arranged on a side close to the medicine reservoir, the control circuit board is connected to and controls the operation of the drive assembly, the upper cover is covered on the base and covers the control circuit board and the top of the drive assembly; the mounting seat comprises a placement cavity, a guide rail and a notch, the inner wall of the placement cavity is provided with at least one guide rail, and the notch is connected to the placement cavity; the on switch protrudes on a side of the control circuit board close to the medicine reservoir, the on switch is mounted in the notch and extends into the placement cavity, the on switch interferes with the installation circuit of the medicine reservoir, and the medicine reservoir presses the on switch to then turn on the circuit to control the operation of the drive assembly; A bracket is provided on one side of the base away from the mounting seat, two brackets are provided, and the control circuit board is mounted on the brackets.

2. The infusion application pump according to claim 1, characterized in that: The driving assembly comprises: a motor, a screw, a push rod, a battery and a fixed shell. The battery and the motor are both arranged in the fixed shell. The output end of the motor is connected to the screw, and the push rod is sleeved on the outer side of the screw.

3. The infusion application pump according to claim 2, characterized in that: The battery is connected to the control circuit board and the motor and supplies power to the control circuit board and the motor. The control circuit board is connected to the motor, and the control circuit board drives the motor to run or stop.

4. The infusion application pump according to claim 2, characterized in that: The push rod is provided with a mounting hole, the mounting hole is provided with an internal thread, the screw rod cooperates with the internal thread in the mounting hole, the motor drives the screw rod to rotate, and the screw rod drives the push rod to move on the guide rail.

5. The infusion dressing pump according to claim 3, characterized in that: The motor is a DC motor or a stepping motor.

6. The infusion application pump according to claim 2, characterized in that: At least one guide groove is arranged on the outer side of the push rod, the number of the guide grooves is consistent with the number of the guide rails, and the guide groove is sleeved on the guide rails.

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