Silicone heating tube device for blood transfusion and infusion

Abstract

The invention discloses a silicone heating tube device for blood transfusion and infusion, comprising a silicone heating tube, the silicone heating tube having an inner cavity, the side wall of the silicone heating tube being provided with an opening along the length direction of the silicone heating tube, the opening being communicated with the inner cavity of the silicone heating tube and being used to embed the blood transfusion and infusion tube into the inner cavity of the silicone heating tube; an electric heating wire for heating is embedded in the tube wall of the silicone heating tube, a temperature sensor is fixedly connected to the inner wall of the silicone heating tube, the temperature sensor is adjacent to an electric heating wire, and the electric heating wire is the nearest electric heating wire; a metal wire is connected in series to the nearest electric heating wire, the length of the metal wire is more than three times the length of the temperature sensor, and the position of the temperature sensor is toward the middle of the metal wire. The invention not only avoids increasing the air gap between the temperature sensor and the blood transfusion and infusion tube during use, but also protects the temperature sensor from the influence of the electric heating wire.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices. Background Art

[0002] Hospitals often perform blood transfusions or infusions on patients. If the temperature of the blood or liquid medicine transfused into the human body is too low, it will cause pain to the patient and even cause adverse reactions. Therefore, it is necessary to heat the blood or liquid medicine, which requires the use of a silicone heating tube 1. Figure 1 As shown, the inner cavity 3 of the silicone heating tube 1 is used to accommodate a blood transfusion tube, and an opening 2 is provided on the side wall of the silicone heating tube 1 along the length direction of the silicone heating tube 1. When in use, the blood transfusion tube is inserted into the inner cavity 3 of the silicone heating tube 1 through the opening 2. A plurality of electric heating wires 4 (such as carbon fiber heating wires) are embedded in the inner wall of the silicone heating tube 1 along its length direction, and the ends of the electric heating wires 4 extend out of the silicone heating tube 1 and are connected to the electric control device.

[0003] In order to provide patients with better blood transfusion and infusion temperature, a temperature sensor 5 is arranged in the inner cavity 3 of the silicone heating tube 1. The signal line of the temperature sensor 5 is embedded in the silicone heating tube 1 and finally extends out of the silicone heating tube 1 to connect with the electronic control device. The temperature of the blood transfusion and infusion can be monitored at any time through the screen of the electronic control device. The existing technology for monitoring the temperature of blood transfusion and infusion has the following defects:

[0004] 1. The temperature sensor 5 is close to the inner wall of the silicone heating tube 1 and thus close to the electric heating wire 4, which causes the temperature measured by the temperature sensor 5 to be too high and cannot accurately reflect the liquid temperature of the blood transfusion or infusion.

[0005] Second, in order to reduce the impact of the above defects, the temperature sensor 5 in the prior art is not close to the inner wall of the silicone heating tube 1, but is located in the inner cavity 3 of the silicone heating tube 1, so that the temperature sensor 5 is less affected by the electric heating wire 4. However, this technology leads to new problems: the wire of the temperature sensor 5 extends into the inner cavity 3 of the silicone heating tube 1, and the position of the temperature sensor 5 and its wire in the inner cavity 3 of the silicone heating tube 1 will change during the blood transfusion and infusion process, which may increase the air gap between the temperature sensor 5 and the blood transfusion and infusion tube, resulting in the temperature sensor 5 being unable to accurately measure the temperature of the blood transfusion and infusion.

[0006] Although the above new problem measures the temperature more accurately than the first defect, there is still the possibility of large deviation, which will cause discomfort to the patient and is not conducive to controlling the temperature conditions of blood transfusion and infusion. Summary of the invention

[0007] The purpose of the present invention is to provide a silicone heating tube device for blood transfusion and infusion, which can eliminate the defects in the prior art, avoid increasing the air gap between the temperature sensor and the blood transfusion and infusion tube during use, and protect the temperature sensor from the influence of the electric heating wire.

[0008] To achieve the above-mentioned purpose, the silicone heating tube device for blood transfusion and infusion of the present invention comprises a silicone heating tube, the silicone heating tube has an inner cavity, and the side wall of the silicone heating tube is provided with an opening along the length direction of the silicone heating tube, the opening is communicated with the inner cavity of the silicone heating tube and is used to embed the blood transfusion and infusion tube into the inner cavity of the silicone heating tube; the characteristic is that: an electric heating wire for heating is embedded in the tube wall of the silicone heating tube, a temperature sensor is fixedly connected to the inner wall of the silicone heating tube, the temperature sensor is adjacent to an electric heating wire, and the electric heating wire is the closest electric heating wire;

[0009] Recently, a metal wire is connected in series with the electric heating wire. The length of the metal wire is more than three times the length of the temperature sensor. The temperature sensor is located toward the middle of the metal wire.

[0010] A thermal conductive silicone grease layer is coated on one side of the temperature sensor facing away from the inner wall of the silicone heating tube.

[0011] The electric heating wire is a carbon fiber heating wire.

[0012] Taking the direction of blood transfusion and infusion as the downstream direction, the distance between the temperature sensor and the downstream end of the metal wire is smaller than the distance between the temperature sensor and the upstream end of the metal wire.

[0013] By adopting the structure of the present invention, the temperature sensor is fixedly connected to the inner wall of the silicone heating tube, and its position will not change during use. The change in position will not cause a large air gap to be generated between the temperature sensor and the blood transfusion tube embedded in the inner cavity of the silicone heating tube, thereby avoiding a reduction in the accuracy of temperature measurement.

[0014] The present invention improves the electric heating wire by connecting a metal wire (preferably a copper wire) in series with the electric heating wire. Since the metal wire has a very low resistance and basically does not generate heat during operation, even if the metal wire is adjacent to the temperature sensor, the temperature sensor will not be heated. The length of the metal wire is more than three times the length of the temperature sensor, and the specific multiple is set by the designer according to the idea of ​​the present invention, in order to prevent the heat generated by the electric heating wires on both sides of the metal wire from affecting the temperature sensor.

[0015] The thermally conductive silicone grease layer can transfer the temperature change of the blood transfusion and infusion tube to the temperature sensor more quickly, thereby making the measurement result of the temperature sensor more accurate.

[0016] The heat generated by the electric heating wire on the upstream side of the metal wire is transported downstream by the liquid in the blood transfusion tube, and the temperature of the liquid directly adjacent to the electric heating wire is higher than the temperature of the liquid in the center of the blood transfusion tube. Therefore, the temperature sensor is oriented toward the middle of the metal wire, and its distance from the downstream end of the metal wire is smaller than the distance from the temperature sensor to the upstream end of the metal wire, so that the temperature sensor can be affected by the heating wires on both sides of the metal wire to a minimum.

[0017] In summary, the present invention completely overcomes the defects of various previous solutions, avoiding the increase of the air gap between the temperature sensor and the blood transfusion tube during use, and protecting the temperature sensor from the influence of the electric heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the applicant’s previous generation product;

[0019] Figure 2 It is a cross-sectional schematic diagram of the silicone heating tube device for blood transfusion and infusion of the present invention;

[0020] Figure 3 yes Figure 2 A-A view, Figure 3 The direction indicated by the middle arrow is the flow direction of the liquid in blood transfusion. DETAILED DESCRIPTION

[0021] like Figures 2 to 3 As shown, the silicone heating tube device for blood transfusion and infusion of the present invention includes a silicone heating tube 1, the silicone heating tube 1 has an inner cavity 3, the side wall of the silicone heating tube 1 is provided with an opening 2 along the length direction of the silicone heating tube 1, the opening 2 is communicated with the inner cavity 3 of the silicone heating tube 1 and is used to embed the blood transfusion and infusion tube into the inner cavity 3 of the silicone heating tube 1; an electric heating wire 4 for heating is embedded in the tube wall of the silicone heating tube 1, a temperature sensor 5 is fixedly connected to the inner wall of the silicone heating tube 1 (the fixed connection method can be a hot melt connection, bonding, or clamping connection, etc.), the temperature sensor 5 is adjacent to an electric heating wire 4, and the electric heating wire 4 is the closest electric heating wire 6; the number of electric heating wires 4 can be increased or decreased as needed, and at least two pairs are provided.

[0022] 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 the length of the temperature sensor 5 . The temperature sensor 5 is located toward the middle of the metal wire 7 .

[0023] A thermal conductive silicone grease layer 8 is coated on one side of the temperature sensor 5 facing away from the inner wall of the silicone heating tube 1 .

[0024] The thermally conductive silicone grease layer 8 can transfer the temperature change of the blood transfusion and infusion tube to the temperature sensor 5 more quickly, thereby making the measurement result of the temperature sensor 5 more accurate.

[0025] The electric heating wire 4 is a carbon fiber heating wire. Taking the direction of blood transfusion and infusion as the downstream direction, the distance between the position of the temperature sensor 5 and the downstream end of the metal wire 7 is smaller than the distance between the temperature sensor 5 and the upstream end of the metal wire 7. The heat emitted by the electric heating wire on the upstream side of the metal wire is transported downstream by the liquid in the blood transfusion and infusion tube, and the temperature of the liquid directly adjacent to the electric heating wire is higher than the liquid temperature at the center of the blood transfusion and infusion tube. Therefore, the temperature sensor is oriented toward the middle of the metal wire, and its position is smaller than the distance between the temperature sensor and the upstream end of the metal wire, which can minimize the influence of the heating wires on both sides of the metal wire on the temperature sensor.

[0026] When in use, the medical staff inserts the blood transfusion tube into the inner cavity 3 of the silicone heating tube 1 through the opening 2, and the outer wall of the blood transfusion tube is pressed against the temperature sensor 5, which provides a good basis for the temperature sensor 5 to accurately measure the temperature of the blood transfusion. During the blood transfusion process, since the temperature sensor 5 is fixed to the inner wall of the silicone heating tube 1, its position will not change, so as to avoid the increase of the air gap between the temperature sensor 5 and the blood transfusion tube due to the position change. In use, the electric heating wire 4 embedded in the tube wall of the silicone heating tube 1 generates heat 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 very low resistance, such as a copper wire, so this section of the electric heating wire 4 will not generate heat, and even if it is adjacent to the temperature sensor 5, it will not cause the temperature measured by the temperature sensor 5 to be too high.

[0027] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A silicone heating tube device for blood transfusion and infusion, comprising a silicone heating tube, the silicone heating tube having an inner cavity, a side wall of the silicone heating tube being provided with an opening along the length direction of the silicone heating tube, the opening being communicated with the inner cavity of the silicone heating tube and being used for embedding the blood transfusion and infusion tube into the inner cavity of the silicone heating tube; Features: An electric heating wire for heating is embedded in the wall of the silicone heating tube, and a temperature sensor is fixedly connected to the inner wall of the silicone heating tube. The temperature sensor is adjacent to an electric heating wire, and the electric heating wire is the closest electric heating wire; A metal wire is connected in series with the electric heating wire recently, the length of the metal wire is more than three times the length of the temperature sensor, and the temperature sensor is located toward the middle of the metal wire; The side of the temperature sensor facing away from the inner wall of the silicone heating tube is coated with a thermal conductive silicone grease layer; The electric heating wire is a carbon fiber heating wire.

2. The silicone heating tube device for blood transfusion and infusion according to claim 1, Features: Taking the direction of blood transfusion and infusion as the downstream direction, the distance between the temperature sensor and the downstream end of the metal wire is smaller than the distance between the temperature sensor and the upstream end of the metal wire.

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