CN210992481U

CN210992481U - Heat-preservation medical catheter

Info

Publication number: CN210992481U
Application number: CN201920323967.1U
Authority: CN
Inventors: 徐亮; 郭遂怀; 陈爱春; 代剑; 肖瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2020-07-14
Anticipated expiration: 2029-03-14

Abstract

The utility model discloses a heat-preservation medical catheter, which comprises a catheter body, wherein one end of the catheter body is a liquid inlet end, the other end of the catheter body is a liquid outlet end, a sleeve outlet hole is formed at the position of the catheter body close to the liquid inlet end, a sleeve inlet hole is formed at the position of the catheter body close to the liquid outlet end, and a flexible liquid injection sleeve is arranged in the inner cavity of the catheter body; the liquid inlet end of the liquid injection sleeve extends out of the sleeve inlet hole, and the sleeve inlet hole is sealed with the outer side wall of the liquid injection sleeve; the liquid outlet end of the liquid injection sleeve extends out of the sleeve outlet hole and is sealed with the outer side wall of the liquid injection sleeve; the outer surface of the catheter body is provided with a constant temperature heating device. Through annotating the liquid sleeve pipe and pouring into hot medium, realize keeping warm with the constant temperature heating device cooperation in the pipe body outside, liquid temperature in this kind of inside and outside two heating methods can the accurate control pipe reduces the fluctuation of liquid temperature in the pipe, maintains the temperature stability of input liquid, has improved patient's comfort level.

Description

Heat-preservation medical catheter

Technical Field

The utility model relates to a medical catheter, which belongs to the technical field of medical instruments.

Background

The medical catheter with the heat preservation function has the function that before liquid is conveyed into a human body, the temperature of the liquid is kept at about 37 ℃ through the constant-temperature heating device, so that the discomfort of a patient caused by the fact that the temperature of the input liquid is greatly different from the body temperature is avoided.

Heating type pipe among the prior art only heats the pipe outer wall, liquid in heat conduction in the pipe through heat radiation or heat-conduction, this kind of mode can make in the pipe inlayer liquid and outer liquid, or the liquid of different periods input have great difference in temperature, the inhomogeneous problem of liquid heating appears, liquid input in-process temperature fluctuation is great in the pipe, consequently needs to take suitable measure to medical pipe, maintains the temperature stability of input liquid, improves patient's comfort level.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a medical pipe keeps warm reduces the interior liquid temperature's of pipe fluctuation, maintains the interior liquid temperature's of pipe stability.

In order to achieve the purpose, the utility model provides a heat-preservation medical catheter, which comprises a catheter body, wherein one end of the catheter body is a liquid inlet end, the other end of the catheter body is a liquid outlet end, a sleeve outlet hole is formed in the position, close to the liquid inlet end, of the catheter body, a sleeve inlet hole is formed in the position, close to the liquid outlet end, of the catheter body, and a flexible liquid injection sleeve is arranged in the inner cavity of the catheter body; the liquid inlet end of the liquid injection sleeve extends out of the sleeve inlet hole, and the sleeve inlet hole is sealed with the outer side wall of the liquid injection sleeve; the liquid outlet end of the liquid injection sleeve extends out of the sleeve outlet hole and is sealed with the outer side wall of the liquid injection sleeve; the outer surface of the catheter body is provided with a constant-temperature heating device.

Among the above-mentioned technical scheme, annotate the liquid inlet end of liquid sleeve pipe and connect and annotate the liquid chamber, the inner wall in annotating the liquid chamber is fixed with electric heater unit and temperature sensor, electric heater unit and temperature sensor respectively with P L C controller electric connection.

In the above technical scheme, the constant temperature heating device is a PTC (thermistor) heater, and the PTC heater is fixed on the side wall of the conduit body.

In the above technical scheme, the PTC heater is located between the inner silica gel sheet and the outer silica gel sheet, and the inner silica gel sheet is attached to the outer wall of the catheter body.

In the technical scheme, the catheter body is communicated with a spherical cavity, the spherical cavity is positioned at one end close to the sleeve inlet hole, and a flow velocity adjusting device is arranged between the spherical cavity and the catheter body.

In the above technical scheme, the flow rate adjusting device is a butterfly valve or a transfusion speed regulator.

In the above technical solution, the catheter body includes a first C-shaped portion and a second C-shaped portion, the openings of the first C-shaped portion and the second C-shaped portion are relatively and fixedly connected, and the cannula outlet hole and the cannula inlet hole are both located on the first C-shaped portion.

In the above technical solution, the liquid used in the injection chamber is water.

In the technical scheme, the outer side wall of the liquid injection sleeve and the sleeve inlet hole and the outer side wall of the liquid injection sleeve and the sleeve outlet hole are sealed by hot-melt reagents.

The utility model has the advantages that: the heat-preservation medical catheter heats the liquid in the catheter by arranging the constant-temperature heating device on the outer side wall of the catheter body; simultaneously, in order to avoid outer heating to lead to heating inhomogeneous, the big problem of intraductal deep liquid temperature difference, it has sleeve pipe inlet and sleeve pipe to go out the hole and set up annotate the liquid sleeve pipe to annotating the liquid sleeve pipe through annotating the liquid chamber, make the inlayer liquid in the pipe with annotate the contact of liquid sleeve pipe, utilize heat preservation liquid heating inlayer liquid, make everywhere liquid temperature in the pipe comparatively homogeneous to liquid temperature in this kind of two heating methods accurate control pipe, reduce the interior liquid temperature's of pipe fluctuation. The flow rate of the liquid in the conduit is controlled by arranging the flow rate adjusting device, so that the flow rate of the liquid is ensured to be in a proper range.

Drawings

Fig. 1 is a schematic view of the overall structure of a heat-insulating medical catheter according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a heating conduit according to the present invention;

FIG. 3 is a schematic view of the overall structure of a heat-insulating medical catheter according to another embodiment of the present invention;

fig. 4 is a schematic view of a catheter deployment structure of a heat-insulating medical catheter according to another embodiment of the present invention.

Description of the specific embodiments with reference numbers:

1. a catheter body; 101. a first C-shaped portion; 102. a second C-shaped portion; 2. injecting a liquid sleeve; 3. an infusion chamber; 4. a temperature sensor; 5. a liquid inlet end; 6. a liquid outlet end; 7. a sleeve outlet; 8. the sleeve is inserted into the hole; 9. a spherical cavity; 10. a flow rate regulating device; 11. an inner silica gel sheet; 12. a PTC heater; 13. an outer silicone sheet; 14. an extension block.

Detailed Description

For better understanding of the objects, structure, features and functions of the present invention, reference should now be made to the drawings and detailed description of the preferred embodiment of the present invention.

As shown in figure 1, the embodiment of the utility model provides a heat preservation medical catheter, including catheter body 1, catheter body 1 one end is the feed liquor end 5, and the other end is for going out liquid end 6, its characterized in that: a sleeve outlet hole 7 is formed in the position, close to the liquid inlet end 5, of the catheter body 1, a sleeve inlet hole 8 is formed in the position, close to the liquid outlet end 6, of the catheter body 1, and a flexible liquid injection sleeve 2 is arranged in the inner cavity of the catheter body 1; the liquid inlet end of the liquid injection sleeve 2 extends out of the sleeve inlet hole 8, and the sleeve inlet hole 8 is sealed with the outer side wall of the liquid injection sleeve 2; the liquid outlet end of the liquid injection sleeve 2 extends out of the sleeve outlet hole 7 and is sealed with the outer side wall of the liquid injection sleeve 2; the outer surface of the catheter body 1 is provided with a constant temperature heating device. And (5) performing dry heat sterilization and packaging after the finished product is qualified through a sealing test. When in use, the liquid to be heated enters from the liquid inlet end 5 and flows out from the liquid outlet end 6. Constant temperature heating device provides energy from the outside and keeps warm to liquid in the pipe body 1, simultaneously, inputs hot medium by the feed liquor end 5 of annotating liquid sleeve pipe 2, and hot medium flow direction is opposite with the interior liquid flow direction of pipe body 1 to with heat transfer to liquid in the pipe body 1, heat liquid from inside.

As shown in figure 3, the liquid inlet end of the liquid injection sleeve 2 is connected with the liquid injection chamber 3 through a threaded connector, an electric heating wire and a temperature sensor are fixed on the inner wall of the liquid injection chamber 3 and are respectively and electrically connected with a P L C controller, a heat medium in the liquid injection chamber 3 is heated through the electric heating wire, the temperature sensor is arranged at the outlet of the heat medium in the liquid injection chamber 3, the power of the electric heating wire is adjusted through the P L C controller, the outflow speed of the heat medium is adjusted through a valve, and the temperature of the outflowing heat medium is controlled to be 37-38 ℃.

As shown in fig. 2, the constant temperature heating device is preferably a PTC heater 12. The PTC heater 12 is positioned between the inner silicone sheet 11 and the outer silicone sheet 13, and the inner silicone sheet 11 is attached to the outer wall of the catheter body 1. When in manufacture, the PTC heater 12 is firstly bonded between the smooth inner silica gel sheet 11 and the smooth outer silica gel sheet 13, and then the silica gel sheets are rolled into an arc shape to be fixed on the side wall of the catheter body 1.

Preferably, the catheter body 1 is communicated with a spherical cavity 9, the spherical cavity 9 is positioned at one end close to the sleeve inlet hole 8, and a flow speed adjusting device 10 is arranged between the spherical cavity 9 and the catheter body 1. The flow rate of the liquid in the catheter body 1 is adjusted by the flow rate adjusting device 10.

Further, the flow rate regulating device is a butterfly valve or an infusion speed regulator, wherein the infusion speed regulator has the same structure as an infusion speed regulator used in infusion of a general outpatient hanging bottle.

As shown in fig. 4, the catheter body 1 includes a first C-shaped portion 101 and a second C-shaped portion 102, the first C-shaped portion 101 and the second C-shaped portion 102 are fixedly connected to each other in an open manner, and the cannula outlet hole 7 and the cannula inlet hole 8 are both located on the first C-shaped portion 101. When sealing, the openings of the first C-shaped part 101 and the second C-shaped part 102 are relatively attached tightly, and then the extending block 14 of the C-shaped part is heated to be attached tightly and cooled.

Preferably, the liquid used in the liquid injection chamber 3 is water, and the stored heat amount is large.

Further, annotate between liquid sleeve 2 lateral wall and sleeve business turn over hole 8, it has organic high polymer to all adopt hot melt type reagent between liquid sleeve 2 lateral wall and the sleeve exit hole 7, medical hot melt adhesive is sealed, before first C type portion 101 and second C type portion 102 butt joint are sealed promptly, will annotate the tip of liquid sleeve 2 and pass out from sleeve business turn over hole 8, sleeve exit hole 7 respectively, then annotate between liquid sleeve 2 lateral wall and sleeve business turn over hole 8, annotate and pour into hot melt type reagent between liquid sleeve 2 lateral wall and the sleeve exit hole 7 and fill, cooling shaping.

In the above embodiments, electronic devices such as the PTC heater, the P L C controller, the temperature sensor, etc. which do not particularly describe specific structures are all in the prior art, and the circuit configurations thereof are not described again.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents may be made to the technical solutions described in the foregoing embodiments or to some technical features of the technical solutions, and any modifications, equivalents and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a heat preservation medical catheter, includes catheter body (1), catheter body (1) one end is feed liquor end (5), and the other end is for going out liquid end (6), its characterized in that: a sleeve outlet hole (7) is formed in the position, close to the liquid inlet end (5), of the catheter body (1), a sleeve inlet hole (8) is formed in the position, close to the liquid outlet end (6), of the catheter body (1), and a flexible liquid injection sleeve (2) is arranged in the inner cavity of the catheter body (1); the liquid inlet end of the liquid injection sleeve (2) extends out of the sleeve inlet hole (8), and the sleeve inlet hole (8) is sealed with the outer side wall of the liquid injection sleeve (2); the liquid outlet end of the liquid injection sleeve (2) extends out of the sleeve outlet hole (7) and is sealed with the outer side wall of the liquid injection sleeve (2); the outer surface of the catheter body (1) is provided with a constant temperature heating device.

2. The heat-preservation medical catheter as claimed in claim 1, wherein the liquid inlet end of the liquid injection sleeve (2) is connected with the liquid injection chamber (3), an electric heating device and a temperature sensor are fixed on the inner wall of the liquid injection chamber (3), and the electric heating device and the temperature sensor are respectively and electrically connected with a P L C controller.

3. The insulated medical catheter of claim 1, wherein: the constant-temperature heating device is a PTC heater (12), and the PTC heater (12) is fixed on the side wall of the conduit body (1).

4. The insulated medical catheter of claim 3, wherein: the PTC heater (12) is located between the inner silica gel sheet (11) and the outer silica gel sheet (13), and the inner silica gel sheet (11) is attached to the outer wall of the catheter body (1).

5. The insulated medical catheter of claim 1, wherein: the catheter body (1) is communicated with a spherical cavity (9), the spherical cavity (9) is located at one end close to the sleeve inlet hole (8), and a flow speed adjusting device (10) is arranged between the spherical cavity (9) and the catheter body (1).

6. The insulated medical catheter of claim 5, wherein: the flow rate regulating device is a butterfly valve or an infusion speed regulator.

7. The insulated medical catheter of claim 1, wherein: the catheter body (1) comprises a first C-shaped part (101) and a second C-shaped part (102), the first C-shaped part (101) and the second C-shaped part (102) are fixedly connected in an opening opposite mode, and the sleeve outlet hole (7) and the sleeve inlet hole (8) are located on the first C-shaped part.

8. The insulated medical catheter of claim 2, wherein: the liquid used in the infusion chamber (3) is water.

9. The insulated medical catheter of claim 1, wherein: and hot melt type reagents are adopted for sealing between the outer side wall of the liquid injection sleeve (2) and the sleeve inlet hole (8) and between the outer side wall of the liquid injection sleeve (2) and the sleeve outlet hole (7).