CN110269974B

CN110269974B - Constant-temperature infusion pump for endocrine

Info

Publication number: CN110269974B
Application number: CN201910569971.0A
Authority: CN
Inventors: 孙小芳; 杨娟; 江薇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2021-04-13
Anticipated expiration: 2039-06-27
Also published as: CN110269974A

Abstract

The application discloses medical instrument technical field's a constant temperature transfer pump is used in endocrine, including peristaltic device and transfer line, the peristaltic device includes pump sheet group and the carrier that is used for bearing the transfer line, pump sheet group includes polylith extrusion pump piece, be equipped with spacing heating device on the peristaltic device, spacing heating device includes spacing pump piece and a plurality of extrusion chamber, the bottom of spacing pump piece is the plane parallel with the carrier, spacing pump piece and extrusion pump piece interval set up, be provided with the cambered surface that is used for holding the transfer line on the extrusion pump piece, the extrusion chamber is located the lower part of transfer line and inlays and locate in the carrier; the extrusion cavity is opposite to the extrusion pump sheet, and comprises a heating cavity, a spring, a U-shaped groove and an extrusion piston sheet which is in sliding connection with the U-shaped groove. This scheme is through the setting of extrusion pump piece, extrusion chamber and spacing pump piece, avoids the crooked that the extrusion of pump piece group to the transfer line arouses, and compressed gas does work simultaneously and makes the heating chamber can heat the transfer line.

Description

Constant-temperature infusion pump for endocrine

Technical Field

The invention relates to the technical field of medical instruments, in particular to a constant-temperature infusion pump for endocrine.

Background

Endocrine is one of two major control systems responsible for regulating the normal functioning of various physiological functions in the body of an animal, and consists of ductless glands (endocrine glands) that secrete hormones (hormones). Normally, the hormones are in balance, and if the balance is broken for some reason (too much or too little hormone) the endocrine disorder is caused, and the corresponding clinical manifestations are caused. Endocrine disorders may occur in both men and women, requiring injection therapy during endocrine therapy, and requiring sophisticated infusion equipment, such as infusion pumps, during injection therapy.

The infusion pump is usually a mechanical or electronic control device, and achieves the purpose of controlling the infusion speed by acting on an infusion catheter, the infusion precision is crucial, the treatment effect and even the life of a patient can be directly influenced, whether the infusion pump can keep the flatness of an infusion tube when in work is an important factor influencing the infusion precision, the infusion pump is provided with a peristaltic device, the peristaltic device comprises a bearing piece and a pump sheet group, the pump sheet group comprises a group of parallel pump sheets which wriggle in an S-shaped mode and a driving mechanism which is inherent to the pump sheets, the driving mechanism comprises a motor, a transfer shaft and an eccentric wheel, the motor drives a cam-shaped eccentric wheel on the transfer shaft to rotate, the cam-shaped eccentric wheel drives the pump sheets which are arranged on the eccentric wheel to extend and retract, because the eccentric wheel is arranged at different positions of each eccentric point, the extending and retracting movement time of each pump blade driven by the same shaft is different; just because the extending and retracting movement time of each pump blade is different, the extending and retracting of the continuous and extending integral state formed by the first pump blade to the last pump blade in sequence is generated; the continuous and extended extension and retraction movement is communicated, and when viewed from the transversely arranged convex strip surface on the front end surface of the pump sheet, the peristalsis which is composed of a plurality of pump sheets and takes an S curve as a track from top to bottom is formed; when the patient creeps to the convex point of the S curve, the infusion tube and the liquid medicine in the infusion tube are extruded and the liquid medicine moves downwards, so that the control of the infusion quantity and speed is completed. When the infusion pump works, the pump sheet group sequentially extrudes the infusion tube arranged between the pump sheet group and the bearing piece at a set speed so as to enable liquid in the infusion tube to flow forwards, an infusion pipeline in the extrusion area is easy to bend due to extrusion of the peristaltic device in the working process, the length of the infusion tube in the extrusion area is increased, and the infusion precision is influenced. In addition, in the squeezing area, because the infusion pipeline is bent and is bent to an excessive degree, a large amount of liquid is gathered at the position, local concentration inconsistency can be caused, if the temperature of the external environment is too low, the temperature of the liquid at the position is lower, and the liquid with the lower temperature enters a human body to cause discomfort.

Disclosure of Invention

The invention aims to provide a constant-temperature infusion pump for endocrine, which solves the problem that an infusion tube in the infusion pump in the prior art is too large in bending degree.

In order to solve the technical problems, the endocrine constant-temperature infusion pump comprises a peristaltic device and an infusion tube, wherein the peristaltic device comprises a pump sheet group and a bearing part for bearing the infusion tube, the pump sheet group comprises a plurality of extrusion pump sheets, the peristaltic device is also provided with a limiting heating device, the limiting heating device comprises a limiting pump sheet and a plurality of extrusion cavities, the bottom of the limiting pump sheet is a plane parallel to the bearing part, the limiting pump sheet and the extrusion pump sheets are arranged at intervals, the extrusion pump sheet is provided with a cambered surface for accommodating the infusion tube, and the extrusion cavities are positioned at the lower part of the infusion tube and are embedded in the bearing part; the extrusion cavity is opposite to the extrusion pump piece, the extrusion cavity comprises a heating cavity, a spring, a U-shaped groove and an extrusion piston piece in sliding connection with the U-shaped groove, the heating cavity is positioned at the upper part of the extrusion piston piece, one end of the spring is connected to the bottom of the U-shaped groove, and the other end of the spring is connected with the extrusion piston piece; the extrusion piston piece is provided with a communicating hole communicated with the U-shaped groove, the communicating hole is communicated with the heating cavity, the top of the heating cavity is provided with an air outlet hole, and the aperture of the air outlet hole is smaller than that of one half of the communicating hole.

The working principle of the invention is as follows: the invention arranges the limit heating device, the limit heating device comprises a limit pump sheet and a plurality of extrusion cavities, the number of the extrusion cavities is consistent with that of the extrusion pump sheets, the extrusion cavities are positioned under the extrusion pump sheets and are embedded in the bearing piece, the bearing piece is a hollow platform, the pump sheet groups are a group of parallel and creeping in an S-shaped mode, the limit pump sheet and the extrusion pump sheets are arranged at intervals, the extrusion cavities are of a structure similar to a piston and comprise heating cavities, springs, U-shaped grooves and extrusion piston sheets in sliding connection with the U-shaped grooves, the extrusion pump sheets are provided with cambered surfaces for accommodating infusion tubes, when the extrusion pump sheets extrude the infusion tubes downwards, the infusion tubes are extruded into the U-shaped grooves because the U-shaped grooves are sunken downwards, and because the extrusion pump sheets are the downward cambered surfaces, the limit effect is realized when the infusion tubes are extruded, the bending caused by direct extrusion can be avoided, the limiting pump sheet is a traditional flat pump sheet, and the peristaltic effect of the peristaltic device can be ensured by arranging the limiting pump sheet at intervals with the extrusion pump sheet, so that the precision of infusion is ensured.

The heating cavity is in a shape matched with the infusion tube, the principle that the temperature is raised by using compressed gas to do work is utilized, when the extrusion pump piece extrudes the infusion tube, the infusion tube sinks, the piston piece is extruded and extruded, the spring is extruded downwards by the extrusion piston piece and the U-shaped groove is extruded, so that the gas in the U-shaped groove is compressed, the compressed gas enters the heating cavity through the communication hole, the compressed gas does work and generates heat because the aperture of the gas outlet hole is far smaller than that of the communication hole, so that the temperature in the heating cavity is raised, when the extrusion pump piece is lifted upwards, the spring rebounds, the extrusion piston piece returns to the initial position, because the extrusion pump piece continuously extrudes the infusion tube, the gas in the U-shaped groove is also continuously compressed, the temperature in the heating cavity is gradually raised, the heating cavity heats the infusion tube by heat radiation, the temperature of liquid in the infusion tube is, to the extent that the temperature does not rise any more, for example, by a few degrees or a dozen degrees, the infusion pump can maintain a constant temperature without causing discomfort to the patient even when used in a cold environment. The invention adopts a limit heating device, and utilizes the extrusion characteristic, so that the structure can limit and reduce the bending degree of the infusion tube; and secondly, the compressed gas does work to generate heat, so that the aim of killing two birds with one stone is fulfilled. In addition, when the infusion tube is used, high-temperature gas (about 30-50 ℃) can be introduced into the U-shaped groove firstly, the initial temperature of the heating cavity is increased, the heating effect is better, and the temperature generated by extrusion is limited, so that the liquid in the infusion tube can be kept at a constant temperature.

The invention has the beneficial effects that: according to the invention, through the arrangement of the extrusion pump sheet, the extrusion cavity and the limiting pump sheet, on one hand, the pump sheet is prevented from being bent greatly due to extrusion of the pump sheet on the infusion tube, on the other hand, the heating cavity can perform radiant heating on the infusion tube by applying work through compressed gas, so that the temperature of liquid in the infusion tube is raised, and the requirement of infusion in a lower-temperature environment can be met.

Further, the side wall of the U-shaped groove is communicated with an air inlet pipe communicated with heating or condensing gas, and a valve is arranged on the air inlet pipe. When the infusion tube is used in a low-temperature environment, hot air can be introduced in advance, for example, the hot air at 30-50 ℃ is introduced into the U-shaped groove to increase the initial temperature of the infusion tube, the temperature increased by the U-shaped groove is limited, so that a temperature sensor is not required, the required stable temperature can be kept, the heat insulation film can be coated outside the U-shaped groove when the infusion tube is used, the heat loss is avoided, and condensed gas can be introduced in advance to reduce the temperature of the liquid to be infused under the condition of high temperature or high temperature of the liquid to be infused.

Furthermore, 2-3 extrusion pump pieces are arranged between every two limiting pump pieces. The extrusion pump pieces correspond to the extrusion cavities one by one, the number of the extrusion cavities is increased, the number of heating cavities can be increased, the heating time of the infusion tube is increased, and the heating effect is ensured.

Furthermore, the infusion tube is provided with a one-way valve which is communicated in one way and faces the outlet of the infusion tube. When in transfusion, the transfusion tube is provided with a one-way valve which is communicated in one way in order to avoid the backflow of liquid.

Drawings

FIG. 1 is a schematic diagram of a constant temperature infusion pump for endocrine use according to the present invention;

fig. 2 is a schematic view of the structure of the squeeze pump sheet and the squeeze chamber in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a driving mechanism 1, a limiting pump piece 2, an extrusion pump piece 3, an infusion tube 4, an extrusion cavity 5, an air outlet 501, a heating cavity 502, a communication hole 503, a spring 504, a U-shaped groove 505, an air inlet tube 6 and a bearing piece 7.

Example 1 is substantially as shown in figures 1 and 2: constant temperature infusion pump is used in endocrine, including peristaltic device and transfer line 4, be provided with the check valve towards 4 exports of transfer line on the transfer line 4, the peristaltic device includes pump sheet group and the carrier 7 who is used for bearing transfer line 4, pump sheet group is a set of parallel side by side and with S-shaped mode peristaltic extrusion pump piece 3 and spacing pump piece 2 and this extrusion pump piece 3 and the inherent actuating mechanism 1 of spacing pump piece 2, pump sheet group includes nine extrusion pump pieces 3 and three spacing pump pieces 2, spacing pump piece 2 and extrusion pump piece 3' S difference lie in: three extrusion pump pieces 3 are arranged between every two limiting pump pieces 2, the lower part of each extrusion pump piece 3 is provided with a corresponding extrusion cavity 5, the extrusion pump piece 3 is provided with a cambered surface for accommodating the infusion tube 4, and the extrusion cavity 5 is positioned at the lower part of the infusion tube 4 and is embedded in the bearing piece 7; the extrusion cavity 5 comprises a heating cavity 502, a spring 504, a U-shaped groove 505 and an extrusion piston sheet connected with the U-shaped groove 505 in a sliding manner, the heating cavity 502 is positioned at the upper part of the extrusion piston sheet, the heating cavity 502 is in a shape fitting with the outside of the infusion tube 4 so as to be better heated, the spring 504 is positioned in the U-shaped groove 505, one end of the spring 504 is connected to the bottom of the U-shaped groove 505, and the other end of the spring 504 is connected with the extrusion piston sheet; the extrusion piston sheet is provided with a communicating hole 503 communicated with a U-shaped groove 505, the communicating hole 503 is communicated with the heating cavity 502, the top of the heating cavity 502 is provided with an air outlet hole 501, the aperture of the air outlet hole 501 is half of that of the communicating hole 503, the side wall of the U-shaped groove 505 is communicated with an air inlet pipe 6 communicated with hot air (or hot air), the temperature of the hot air (or hot air) acts at 30-50 ℃, and the air inlet pipe 6 is provided with a valve.

The specific implementation process is as follows: before starting the infusion pump, if the environment is extreme, such as low temperature environment, high temperature gas is introduced, then the infusion pump is started, the driving mechanism 1 moves to drive the extrusion pump piece 3 and the limiting pump piece 2 to creep in an S-shaped mode, when the extrusion pump piece 3 extrudes the infusion tube 4, the infusion tube 4 sinks to extrude the extrusion piston piece, the extrusion piston piece extrudes the spring 504 downwards and extrudes the U-shaped groove 505, so that the gas in the U-shaped groove 505 is compressed, the compressed gas enters the heating cavity 502 through the communication hole 503, because the aperture of the gas outlet hole 501 is far smaller than that of the communication hole 503, the compressed gas does work and generates heat, so that the temperature in the heating cavity 502 rises, when the extrusion pump piece 3 is lifted upwards, the spring 504 rebounds, the extrusion piston piece returns to the initial position, because the extrusion pump piece 3 is continuously extruding the infusion tube 4, the gas in the U-shaped groove 505 is also continuously compressed, the temperature in the heating cavity 502 is gradually increased, the heat radiation of the heating cavity 502 heats the infusion tube 4, the temperature of the liquid in the infusion tube 4 is gradually increased, the compressed gas is limited to do work and generate heat, and the temperature is increased to a certain degree, for example, the temperature is not increased by several degrees or tens of degrees, at the moment, the infusion pump can keep a constant temperature, and the infusion pump can be used in a cold environment immediately without causing discomfort of a patient.

If the high-temperature environment is adopted, the condensed gas is introduced, the compressed gas does work to generate heat, the temperature of the condensed gas rises, and the rising amplitude is not too large, so that the cold quantity of the condensed gas can be effectively reduced, and the cooled liquid to be infused is not too low in temperature.

Embodiment 2 differs from embodiment 1 only in that two squeeze pump pieces 3 are provided between every two limit pump pieces 2.

Claims

1. The utility model provides an endocrine is with constant temperature transfer pump, includes peristaltic device and transfer line, the peristaltic device includes pump sheet group and the carrier who is used for bearing the transfer line, pump sheet group includes polylith extrusion pump piece, its characterized in that: the peristaltic device is also provided with a limiting heating device, the limiting heating device comprises a limiting pump sheet and a plurality of extrusion cavities, the bottom of the limiting pump sheet is a plane parallel to the bearing piece, the limiting pump sheet and the extrusion pump sheet are arranged at intervals, the extrusion pump sheet is provided with a cambered surface for accommodating the infusion tube, and the extrusion cavities are positioned at the lower part of the infusion tube and embedded in the bearing piece; the extrusion cavity is opposite to the extrusion pump piece, the extrusion cavity comprises a heating cavity, a spring, a U-shaped groove and an extrusion piston piece in sliding connection with the U-shaped groove, the heating cavity is positioned at the upper part of the extrusion piston piece, one end of the spring is connected to the bottom of the U-shaped groove, and the other end of the spring is connected with the extrusion piston piece; the extrusion piston piece is provided with a communicating hole communicated with the U-shaped groove, the communicating hole is communicated with the heating cavity, the top of the heating cavity is provided with an air outlet hole, and the aperture of the air outlet hole is smaller than that of one half of the communicating hole.

2. The endocrine use constant temperature infusion pump according to claim 1, characterized in that: the side wall of the U-shaped groove is communicated with an air inlet pipe communicated with heating or condensing gas, and a valve is arranged on the air inlet pipe.

3. The endocrine use constant temperature infusion pump according to claim 1 or 2, characterized in that: every two be provided with 2 ~ 3 extrusion pump pieces between the spacing pump piece.

4. The endocrine use constant temperature infusion pump according to claim 3, characterized in that: the infusion tube is provided with a one-way valve which is communicated in one way and faces the outlet of the infusion tube.