CN110882451A

CN110882451A - Silica gel heating tube device for blood transfusion and fluid infusion

Info

Publication number: CN110882451A
Application number: CN201911394954.4A
Authority: CN
Inventors: 郜时兴; 米贝贝; 陈川川
Original assignee: Henan Linuo Medical Technology Co Ltd
Current assignee: Henan Linuo Medical Technology Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-03-17

Abstract

The invention discloses a silica gel heating pipe device for blood transfusion and fluid infusion, which comprises a silica gel heating pipe, wherein the silica gel heating pipe is provided with an inner cavity, the side wall of the silica gel heating pipe is provided with an opening along the length direction of the silica gel heating pipe, and the opening is communicated with the inner cavity of the silica gel heating pipe and is used for embedding a blood transfusion and fluid infusion pipe into the inner cavity of the silica gel heating pipe; an electric heating wire for heating is embedded in the tube wall of the silica gel heating tube, a temperature sensor is fixedly connected to the inner wall of the silica gel heating tube, the temperature sensor is adjacent to one electric heating wire, and the electric heating wire is the nearest electric heating wire; the nearest electric heating wire is connected with a metal wire in series, the length of the metal wire is more than three times of that of the temperature sensor, and the position of the temperature sensor faces to the middle of the metal wire. The invention not only avoids enlarging the air gap between the temperature sensor and the blood transfusion and infusion tube in use, but also avoids the temperature sensor from being influenced by the electric heating wire.

Description

Silica gel heating tube device for blood transfusion and fluid infusion

Technical Field

The invention relates to the technical field of medical instruments.

Background

Hospitals often transfuse blood or fluid to patients. If the temperature of the blood or the liquid medicine input into the human body is too low, the pain of the patient can be brought, and even the adverse reaction of the patient can be caused. Therefore, blood or medical solution needs to be warmed, and the silica gel heating tube 1 is required. As shown in fig. 1, an inner cavity 3 of the silica gel heating tube 1 is used for accommodating a blood transfusion infusion tube, an opening 2 is arranged on the side wall of the silica gel heating tube 1 along the length direction of the silica gel heating tube 1, and the blood transfusion infusion tube is embedded into the inner cavity 3 of the silica gel heating tube 1 through the opening 2 when in use. A plurality of electric heating wires 4 (such as carbon fiber heating wires) are embedded in the inner wall of the silica gel heating pipe 1 along the length direction of the silica gel heating pipe, and the end parts of the electric heating wires 4 extend out of the silica gel heating pipe 1 and are connected with an electric control device.

In order to provide better blood transfusion and fluid transfusion temperature for patients, a temperature sensor 5 is arranged in the inner cavity 3 of the silica gel heating pipe 1, a signal wire of the temperature sensor 5 is embedded in the silica gel heating pipe 1 and finally extends out of the silica gel heating pipe 1 to be connected with an electric control device, and the temperature of blood transfusion and fluid transfusion can be monitored at any time through a screen of the electric control device. The prior art for monitoring the temperature of blood transfusion and fluid transfusion has the following defects:

firstly, the temperature sensor 5 is close to the inner wall of the silica gel heating pipe 1 so as to be close to the electric heating wire 4, so that the temperature measured by the temperature sensor 5 is higher, and the liquid temperature of blood transfusion and liquid transfusion can not be accurately reflected.

Secondly, in order to reduce the influence of the above defects, in the prior art, the temperature sensor 5 is not tightly attached to the inner wall of the silica gel heating tube 1, but is located in the inner cavity 3 of the silica gel heating tube 1, so that the temperature sensor 5 is less affected by the electric heating wire 4. However, this technique leads to new problems: the lead of the temperature sensor 5 extends into the inner cavity 3 of the silica gel heating tube 1, and the positions of the temperature sensor 5 and the lead thereof in the inner cavity 3 of the silica gel heating tube 1 can be changed in the process of blood transfusion and fluid infusion, which may result in enlarging the air gap between the temperature sensor 5 and the blood transfusion and fluid infusion tube, and result in that the temperature sensor 5 cannot accurately measure the temperature of the blood transfusion and fluid infusion.

Although the above new problem is more accurate than the first one, there is still a possibility of large deviation, which causes discomfort to the patient and is not favorable for controlling the temperature condition of the blood transfusion and the fluid infusion.

Disclosure of Invention

The invention aims to provide a silica gel heating pipe device for blood transfusion and fluid infusion, which can eliminate the defects in the prior art, avoid enlarging the air gap between a temperature sensor and a blood transfusion and fluid infusion pipe in use, and avoid the temperature sensor from being influenced by an electric heating wire.

In order to achieve the purpose, the silica gel heating tube device for blood transfusion and fluid infusion comprises a silica gel heating tube, wherein the silica gel heating tube is provided with an inner cavity, the side wall of the silica gel heating tube is provided with an opening along the length direction of the silica gel heating tube, and the opening is communicated with the inner cavity of the silica gel heating tube and is used for embedding a blood transfusion and fluid infusion tube into the inner cavity of the silica gel heating tube; the method is characterized in that: an electric heating wire for heating is embedded in the tube wall of the silica gel heating tube, a temperature sensor is fixedly connected to the inner wall of the silica gel heating tube, the temperature sensor is adjacent to one electric heating wire, and the electric heating wire is the nearest electric heating wire;

the nearest electric heating wire is connected with a metal wire in series, the length of the metal wire is more than three times of that of the temperature sensor, and the position of the temperature sensor faces to the middle of the metal wire.

One side of the inner wall of the temperature sensor, which deviates from the silica gel heating pipe, is coated with a heat-conducting silicone grease layer.

The electric heating wire is a carbon fiber heating wire.

The distance from the position of the temperature sensor to the downstream end of the metal wire is smaller than the distance from the temperature sensor to the upstream end of the metal wire by taking the direction of blood transfusion and liquid transfusion as the downstream direction.

By adopting the structure of the invention, the temperature sensor is fixedly connected on the inner wall of the silica gel heating pipe, the position of the temperature sensor can not be changed in use, and a larger air gap can not be generated between the temperature sensor and a blood transfusion and infusion pipe embedded in the inner cavity of the silica gel heating pipe due to the change of the position, thereby avoiding reducing the accuracy of temperature measurement.

The invention improves the electric heating wire, and the metal wire (preferably copper wire) is connected in series on the electric heating wire. Since the wire has a low resistance and generates substantially no heat during operation, the temperature sensor is not heated even if the wire is adjacent to the temperature sensor. The length of the metal wire is more than three times of the length of the temperature sensor, and the specific times are set by designers according to the idea of the invention, so that the temperature sensor is prevented from being influenced by heat generated by the electric heating wires on two sides of the metal wire.

The heat-conducting silicone layer can enable the temperature change of the blood transfusion and infusion tube to be transmitted to the temperature sensor more quickly, so that the measurement result of the temperature sensor is more accurate.

The heat emitted by the electric heating wire on the upstream side of the metal wire is conveyed downstream by the liquid in the blood transfusion liquid conveying pipe, and the temperature of the liquid directly adjacent to the electric heating wire is higher than that of the liquid in the center of the blood transfusion liquid conveying pipe. Thus, the temperature sensor is oriented toward the middle of the wire and is positioned at a distance from the downstream end of the wire that is less than the distance from the upstream end of the wire, minimizing the temperature sensor's influence from the heating wires on both sides of the wire.

In a word, the invention completely overcomes the defects of the previous different schemes, not only avoids enlarging the air gap between the temperature sensor and the blood transfusion and infusion tube in use, but also avoids the temperature sensor from being influenced by the electric heating wire.

Drawings

FIG. 1 is a schematic cross-sectional view of a parent product of the applicant;

FIG. 2 is a schematic cross-sectional view of a silica gel heating tube device for transfusion and infusion according to the present invention;

fig. 3 is a view from a-a in fig. 2, and the direction indicated by the arrow in fig. 3 is the direction of the flow of the liquid in the transfusion solution.

Detailed Description

As shown in fig. 2 to 3, the silica gel heating tube device for blood transfusion and fluid infusion of the present invention comprises a silica gel heating tube 1, the silica gel heating tube 1 has an inner cavity 3, the side wall of the silica gel heating tube 1 is provided with an opening 2 along the length direction of the silica gel heating tube 1, the opening 2 is communicated with the inner cavity 3 of the silica gel heating tube 1 and is used for embedding a blood transfusion and fluid infusion tube into the inner cavity 3 of the silica gel heating tube 1; an electric heating wire 4 for heating is embedded in the tube wall of the silica gel heating tube 1, a temperature sensor 5 is fixedly connected (the fixed connection mode can be a hot melting connection mode, an adhesion mode, a clamping connection mode or the like) on the inner wall of the silica gel heating tube 1, the temperature sensor 5 is adjacent to one electric heating wire 4, and the electric heating wire 4 is the nearest electric heating wire 6; the number of the electric heating wires 4 can be increased or decreased as required, and at least two pairs are arranged.

A metal wire 7 (preferably a copper wire) is connected in series to the electric heating wire 6, the length of the metal wire 7 is more than three times that of the temperature sensor 5, and the temperature sensor 5 is positioned towards the middle of the metal wire 7.

One side of the temperature sensor 5, which is far away from the inner wall of the silica gel heating pipe 1, is coated with a heat-conducting silica gel layer 8.

The heat-conducting silicone layer 8 can enable the temperature change of the blood transfusion liquid conveying pipe to be transferred to the temperature sensor 5 more quickly, so that the measuring result of the temperature sensor 5 is more accurate.

The electric heating wire 4 is a carbon fiber heating wire. The temperature sensor 5 is located at a distance from the downstream end of the wire 7 that is less than the distance from the temperature sensor 5 to the upstream end of the wire 7, in the downstream direction, which is the direction of blood transfusion and fluid infusion. The heat emitted by the electric heating wire on the upstream side of the metal wire is conveyed downstream by the liquid in the blood transfusion liquid conveying pipe, and the temperature of the liquid directly adjacent to the electric heating wire is higher than that of the liquid in the center of the blood transfusion liquid conveying pipe. Thus, the temperature sensor is oriented toward the middle of the wire and is positioned at a distance from the downstream end of the wire that is less than the distance from the upstream end of the wire, minimizing the temperature sensor's influence from the heating wires on both sides of the wire.

When the device is used, medical personnel can insert the blood transfusion liquid conveying pipe into the inner cavity 3 of the silica gel heating pipe 1 through the opening 2, the outer wall of the blood transfusion liquid conveying pipe is tightly pressed on the temperature sensor 5, and a good foundation is provided for the temperature sensor 5 to accurately measure the temperature of blood transfusion and liquid conveying. In the process of blood transfusion and liquid transfusion, the temperature sensor 5 is fixed on the inner wall of the silica gel heating pipe 1, so that the position of the temperature sensor 5 cannot be changed, and the increase of the air gap between the temperature sensor 5 and a blood transfusion and liquid transfusion pipe caused by the position change is avoided. When in use, the electric heating wire 4 embedded in the tube wall of the silica gel heating tube 1 heats up to heat the liquid in the blood transfusion tube. The part of the electric heating wire 6 adjacent to the temperature sensor 5 is a metal wire 7 with low resistance, such as a copper wire, so that the section of the electric heating wire 4 does not generate heat, and the temperature measured by the temperature sensor 5 is not higher even if the electric heating wire is adjacent to the temperature sensor 5.

Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.

Claims

1. The silica gel heating pipe device for blood transfusion and fluid infusion comprises a silica gel heating pipe, wherein the silica gel heating pipe is provided with an inner cavity, the side wall of the silica gel heating pipe is provided with an opening along the length direction of the silica gel heating pipe, and the opening is communicated with the inner cavity of the silica gel heating pipe and is used for embedding a blood transfusion and fluid infusion pipe into the inner cavity of the silica gel heating pipe; the method is characterized in that: an electric heating wire for heating is embedded in the tube wall of the silica gel heating tube, a temperature sensor is fixedly connected to the inner wall of the silica gel heating tube, the temperature sensor is adjacent to one electric heating wire, and the electric heating wire is the nearest electric heating wire;

2. The silica gel heating tube device for blood transfusion and infusion according to claim 1, characterized in that: one side of the inner wall of the temperature sensor, which deviates from the silica gel heating pipe, is coated with a heat-conducting silicone grease layer.

3. The silica gel heating tube device for blood transfusion and infusion according to claim 1, characterized in that: the electric heating wire is a carbon fiber heating wire.

4. The silica gel heating tube device for transfusion according to any one of claims 1 to 3, characterized in that: the distance from the position of the temperature sensor to the downstream end of the metal wire is smaller than the distance from the temperature sensor to the upstream end of the metal wire by taking the direction of blood transfusion and liquid transfusion as the downstream direction.