CN213698336U - Heating stirring temperature display type syringe - Google Patents

Abstract

The utility model discloses a heating stirring temperature-displaying type syringe belongs to the medical instrument field, including needle mouth, needle tubing, piston, push rod, its characterized in that: one end of the piston is connected with the push rod, and the other end of the piston is connected with the compressible stirrer; the compressible stirrer and the piston are inserted into the needle tube from the open end of the needle tube; a heater is embedded in the wall of the needle tube; a power supply is arranged outside the needle tube; the power supply is connected with the heater; the needle tube is provided with a temperature display area which can display the temperature range of the liquid in the needle tube. Through the compressible agitator that sets up in the syringe needle, realize stirring liquid in the syringe when the heating, make liquid be heated more evenly, and the temperature condition of liquid in the syringe then can be shown in setting up of temperature display area, and the person of facilitating the use in time heats liquid and stops the heating.

Description

Heating stirring temperature display type syringe

Technical Field

The utility model relates to an injector, in particular to a heating and stirring temperature display type injector, which belongs to the field of medical appliances.

Background

Syringes are a common medical device that now provides intramuscular therapy to patients, but also sometimes feeds patients with partially abnormal food, such as nasogastric or gastric tube feeding. Nasal feeding is generally longer in duration than intramuscular injection of the usual drug. If a common syringe is used for nasal feeding or stomach tube feeding, the feeding is not finished frequently, and the liquid in the syringe is cooled, which is not beneficial to the treatment and rehabilitation of patients. Even in the common treatment (such as injecting medicines like a manicure file), if the liquid in the injector can be at the proper temperature, the better experience can be provided for the patient. Meanwhile, the common injector cannot display the temperature, if the temperature of liquid in the injector is needed to be known, a manual touch feeling mode (hand touch or mouth taste) is needed, so that not only is extra work increased, but also a greater sanitary risk exists.

Chinese patent CN201720136368.X discloses an injector with heating and display functions, which comprises an injector body, a cavity, a piston and a piston shaft, a cavity is arranged in the injector body, a piston is arranged at one end of the cavity, a piston shaft is arranged at one end of the piston, the top end of the injector body is provided with a needle head, the surface of the injector body is provided with a temperature sensor, a data display screen is arranged on one side of the temperature sensor, a power switch is arranged at the bottom end of the data display screen, the bottom of the data display screen is provided with a storage battery, the bottom end of the temperature sensor is provided with a temperature controller, an electric heating plate is arranged on the side wall inside the cavity, a liquid depth sensor is arranged at the top end of the piston, the controller is installed to liquid depth sensor one side, the utility model discloses an install temperature sensor, controller and hot plate and realize the heating function. However, because the heating plate is disposed within the wall of the syringe, when the syringe used for nasogastric or gastric tube feeding is large in size (up to 200ml or more for gastric tube feeding), thick in liquid, or poor in thermal conductivity of the liquid, the liquid near the heating plate may have reached or even exceeded the desired temperature, while the liquid in the center of the syringe tube is still not hot enough, resulting in uneven heating. Meanwhile, the technical scheme of cn201720136368.x adopts a plurality of electronic devices such as a data display screen, a temperature sensor, a power supply, a power switch and the like, so that the problems of complex structure and high manufacturing cost are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heating stirring temperature-displaying type syringe through the compressible agitator that sets up in the syringe needle tubing when the syringe heating, realizes stirring liquid in the syringe when the heating, makes liquid be heated more evenly, and the temperature condition of liquid in the syringe then can be shown in the setting of temperature display district, and the person of facilitating the use is in time to liquid heating and stop heating.

The utility model discloses a following technical scheme realizes: the utility model provides a heating stirring temperature display type syringe, includes needle mouth, needle tubing, piston, push rod, its characterized in that: one end of the piston is connected with the push rod, and the other end of the piston is connected with the compressible stirrer; the compressible stirrer and the piston are inserted into the needle tube from the open end of the needle tube; a heater is embedded in the wall of the needle tube; a power supply is arranged outside the needle tube; the power supply is connected with the heater; the needle tube is provided with a temperature display area which can display the temperature range of the liquid in the needle tube.

The utility model discloses a syringe is when using, and the liquid in its syringe is in when the high temperature, the temperature is suitable, the temperature crosses three kinds of condition excessively, and the temperature display district shows different cue signal respectively. When the liquid in the injector is too low, the temperature display area prompts that heating is needed through display information. The injector power supply is started (a power switch can be set or not set according to the requirement according to the different power types, if the scheme that a battery is matched with a battery compartment is adopted, the power switch can be not set by adopting a method of loading and unloading the battery to start and stop the power supply, the heater heats the liquid in the injector, meanwhile, a user manually rotates the push rod to drive the piston and the compressible stirrer connected with the piston to rotate, so that the liquid is heated uniformly when being heated until the liquid is heated to the required temperature, and the temperature display area prompts that the required temperature is proper through display information and starts to push (feed) the liquid for a patient. In order to ensure that the liquid is not cooled down because of stopping heating in the pushing (feeding) process, the liquid can be pushed in while being continuously heated. When the temperature of the liquid is too high in the continuous heating process, the temperature display area prompts that the temperature is too high through a display signal, heating is stopped, and the injector is cooled naturally or in other modes.

Further, the compressible agitator is in the shape of a helix. It is known that a spiral shape (most typically a spring) has good compressibility.

Still further, the temperature display area is made of reversible thermochromic materials. The temperature display area made of the reversible temperature-sensing color-changing material can be made into a sheet or a strip and the like to be embedded into the wall of the syringe needle tube, or the reversible temperature-sensing color-changing material can be directly used for producing the needle tube and the needle opening. The reversible thermochromic material is usually prepared by adding a reversible thermochromic component to PP, PE, or other materials. Common reversible thermochromic compositions include liquid crystal (e.g., cholesteric), inorganic (CuHgI)₄Etc.), organic compounds (triarylmethane phthalides, indoline phthalides, etc.). The reversible thermochromic material has been widely used in many fields such as food packaging, daily necessities, textiles, etc. (Gaoyei, 20319; Yu, Wangxiang. thermochromic material State of the Art shallow analysis [ J]Shandong chemical, 2018,47(08):68-71+ 73), the most common product at present is the baby color-changing spoon sold by Taobao. The temperature display area of the injector made of the reversible temperature-sensing color-changing material can realize the effect that the injector presents different colors at different temperatures, and plays a role in prompting the temperature condition of a user. When the temperature display device is used, when the liquid in the needle tube is at three conditions of overhigh temperature, proper temperature and overlow temperature, the temperature display areas made of the reversible temperature-sensitive color-changing material respectively display different colors (for example, overhigh color, dark green color, proper color, light green color, overlow color), so that a user can visually observe the temperature condition of the liquid in the syringe conveniently and adjust the temperature as required. When the liquid in the injector is too low, the reversible temperature-sensitive color-changing material displays a corresponding prompt color (such as colorless), which indicates that heating is needed. The user supplies power to the heater through the power supply, liquid in the injector is subjected to heating, and meanwhile, the user manually rotates the push rod to drive the piston and the compressible stirrer connected with the piston to rotate, so that the liquid is heated when being heatedAnd (3) homogenizing until the liquid is heated to the required temperature, the reversible temperature-sensing material displays the corresponding display color (such as light green), and the liquid starts to be pushed (fed) for the patient. In order to ensure that the liquid is not cooled down and cooled down due to stopping heating in the pushing (feeding) process, the liquid can be pushed in while being continuously heated. When the temperature of the liquid is too high in the continuous heating process, the reversible temperature-sensitive color-changing material displays a corresponding prompt color (dark green), the heating is stopped, and the injector is cooled naturally or in other modes.

Still further, the power supply comprises a battery compartment and a battery loaded into the battery compartment; the battery compartment is arranged on the outer wall of the needle tube, a positive electrode contact and a negative electrode contact are arranged in the battery compartment, the positive electrode of the heater is connected with the positive electrode of the battery through the positive electrode contact, and the negative electrode of the heater is connected with the negative electrode of the battery through the negative electrode contact.

Still further, a metal elastic sheet is arranged at the bottom in the battery cabin, is positioned above the negative electrode contact and is in contact with the negative electrode of the battery; the metal elastic sheet can close and break the connection between the negative contact and the negative electrode of the battery; the battery is a button battery; the heater is an electric heating wire.

Still further, the temperature display area is made of a multi-component compound thermochromic material.

Still further, the temperature display area is reversible temperature-sensing color-changing material on the outer wall of the needle tube close to the needle opening.

Still further, a hollow interlayer is arranged in the wall of the needle tube, and a heater and a temperature display area are respectively arranged at different positions in the interlayer.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) set up the compressible agitator be connected with the piston in the needle tubing, when the syringe size is great (if supply the food as nasal feeding or stomach tube), liquid consistency is great or liquid thermal conductivity is relatively poor, can manually rotate the push rod and drive piston and compressible agitator and rotate, the liquid in the stirring needle tubing makes liquid be heated more evenly when the heating. The compressible stirrer is adopted, so that the normal use of the syringe is not influenced.

(2) The compressible stirrer is made into a spiral shape, has a good compression effect, and is simple in structure, convenient to process and low in manufacturing cost. And the linear structure occupies a small volume in the liquid, does not occupy a large amount of space and has overlarge stirring amplitude like other stirrers, and avoids the problem of liquid overflow in the stirring process.

(3) When the injector is manufactured, the temperature display area is made of reversible temperature-sensitive color-changing materials. The purpose of prompting the temperature of the liquid in the injector is realized through the temperature-sensing color-changing characteristic of the material. Compare in a plurality of electric elements complex technical scheme such as CN201720136368.X adoption temperature sensor, data display screen, the utility model discloses a structure is simpler, and electric elements still less, and not only the cost is lower, more is fit for disposable syringe, and still less electric elements means lower fault rate moreover, more is favorable to the long-term storage of syringe.

(4) The technical scheme that the battery compartment, the positive contact, the negative contact and the battery are used as power sources is adopted, the battery can be not assembled during production, the battery can not be assembled during storage of the injector, and the battery can be assembled only during use. Thus, the electric element fixed on the injector only has the heater and the positive and negative contacts connected with the heater (if the electric element is connected through the lead, the lead is also included), thereby further reducing the electric element, further lowering the manufacturing cost of the product and being more beneficial to the long-term storage of the injector.

(5) The heater adopts the electric heating wire, is convenient for directly burying in the needle tube during production, and is directly connected with the positive and negative contacts. The button cell not only has small advantage, but also cooperates the metal shrapnel (play intercommunication and disconnection effect between button electromagnetism and negative pole contact) that is located the negative pole contact top, only needs to press the button cell in the battery compartment, can start electric heating wire for the liquid heating in the syringe needle.

(6) The multi-component compound thermochromic material is lower in manufacturing cost than other similar materials such as liquid crystal reversible thermochromic materials and the like, has the advantage of no toxicity compared with inorganic reversible thermochromic materials, and is used on infant tableware at present. And the multi-component compound temperature-sensitive color-changing material can display different colors at different temperatures, thereby overcoming the problem that the traditional reversible temperature-sensitive color-changing material (the color is changed from light to dark from the same color) has single color. Meanwhile, the multi-component compound temperature-sensitive color-changing material is lower than the similar liquid crystal material in the manufacturing cost.

(7) The technical scheme that the reversible temperature-sensing color-changing material is coated or wrapped on the outer wall of the needle tube close to one end of the needle opening is adopted to replace the technical scheme that the reversible temperature-sensing color-changing material is added into the manufacturing material of the injector, so that the manufacturing method of the utility model is further simplified.

(9) Through the setting of intermediate layer, not only increased the heat preservation performance of syringe, with heater and temperature display district to wherein moreover, it is more simple and convenient to compare in the mode of burying underground, and the protection heater that can be better compared in the mode of outsourcing and temperature display district.

Drawings

FIG. 1 is a sectional view of the structure of the syringe of the present invention

FIG. 2 is a perspective view of the needle opening and needle tube of the injector of the present invention

FIG. 3 is a schematic view of the temperature display area of the syringe of the present invention

FIG. 4 is a schematic structural view of example 3

FIG. 5 is a block diagram of a compressible agitator, piston and pushrod

FIG. 6 is a perspective view of a compressible agitator, piston and pushrod

FIG. 7 is a sectional view of the structure of example 9

Wherein, 1-needle mouth; 2-a needle tube; 21-interlayer; 3-a piston; 4-a heater; 5, a power supply; 51-a battery compartment; 52 — positive electrode contact; 53-negative contact; 54-spring plate; 6-a battery; 7, a push rod; 8-a compressible stirrer; 101-temperature display area; 112-a first temperature display area; 113-second temperature display zone.

Detailed Description

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Example 1:

referring to fig. 1-3, a heating stirring temperature-displaying type injector comprises a needle opening 1, a needle tube 2, a piston 3 and a push rod 7, and is characterized in that: one end of the piston 3 is connected with a push rod 7, and the other end of the piston is connected with a compressible stirrer 8; the compressible stirrer 8 and the piston 3 are inserted into the needle tube 2 from the open end of the needle tube 2; a heater 4 is embedded in the tube wall of the needle tube 2; a power supply 5 is arranged outside the needle tube 2; the power supply 5 is connected with the heater 4; the syringe 2 is provided with a temperature display area 101 that displays the temperature range of the fluid in the syringe 2. In this embodiment, the temperature display area 101 is located on the outer wall of the needle tube 2 near the needle opening 1, and is made of a green reversible thermochromic material (transparent at a temperature lower than 25 ℃, light green at 25-40 ℃, and dark green at a temperature higher than 40 ℃). The embodiment in the specification selects the color-changing material with the temperature range of 25-40 ℃ according to that the temperature of food suitable for a human body is not more than 40 ℃, but the color-changing range of the reversible temperature-sensitive color-changing material is not limited to the range, and the temperature change range and the color change can be selected according to specific requirements during manufacturing according to the specific requirements.

The specific working process is as follows: the temperature display area 101 (shown in fig. 3) is made of green reversible thermochromic material, and is transparent at a temperature lower than 25 ℃, light green at 25-40 ℃ and dark green at a temperature higher than 40 ℃. In use, when the liquid in the barrel 2 is below 25 ℃, the temperature display area 101 displays a transparent color to indicate to the user that the liquid needs to be heated. The user makes the heater 4 work to heat the liquid by the power supply 5 on the injector (the power switch can be set or not according to the requirement according to the different types of the power supply, if the scheme that the battery is matched with the battery compartment is adopted, the scheme that the power switch is not set can be adopted when the power supply is started and stopped by adopting the method of assembling and disassembling the battery, and if the technical scheme that the power supply is fixedly arranged and can not be disassembled is adopted, the power switch is required to be set). In the heating process, the push rod 7 is manually rotated by a user to drive the piston 3 and the compressible stirrer 8 connected with the piston 3 to rotate, so that the liquid is heated uniformly when being heated, the temperature display area 101 gradually becomes light green, and the feeding or injection for a patient is started. In order to ensure that the liquid does not cool down during use due to the heating being stopped, the heating can be continued during the feeding and heating process. In the continuous heating process, if the temperature of the liquid rises to above 40 ℃, the temperature display area 101 turns into dark green, and the user stops heating or takes appropriate cooling measures.

Example 2:

based on example 1, the compressible stirrer 8 is in a spiral shape (as shown in fig. 6), and the spiral stirrer can be compressed conveniently during the pushing process of the piston. In this embodiment, the stirrer 8 is made of medical stainless steel, and by using the characteristic of high hardness of stainless steel, the compressible stirrer 8 has high compression performance in the longitudinal direction (along the length direction of the needle tube 2) and high rigidity in the transverse direction (perpendicular to the length direction of the needle tube 2), and is not easily deformed in the transverse direction when stirring liquid with high consistency, so that the stirring effect is good. Depending on the circumstances, it is also possible to use other cheaper materials such as PP plastic for the compressible stirrer 8 if a larger lateral stiffness of the stirrer is not required. The compressible stirrer 8 in this embodiment adopts a helical shape with different diameters, which can be completely compressed into a plane, and is a more preferable scheme compared with the helical shape with the same diameter, which has a better compression effect.

Example 3:

referring to fig. 1, 2 and 4, on the basis of embodiment 1, the temperature display area 101 of the needle tube 2 is divided into a first temperature display area 112 and a second temperature display area 113, each arranged in a long bar shape along the length direction of the needle tube 2. The first temperature display area 112 is made of a yellow reversible thermochromic material, is transparent below 25 ℃ and is yellow above 25 ℃; the second temperature display region 113 is made of a red reversible thermochromic material, and is transparent at a temperature lower than 40 ℃ and red at a temperature higher than 40 ℃.

The specific working process is as follows: the method of use of this example is the same as example 1, except that there is a difference in the specific temperature indication. When the liquid is below 25 ℃, the first temperature display area 112 and the second temperature display area 113 are transparent; when the liquid temperature is higher than 25 ℃ and lower than 40 ℃, the first temperature display area 112 is yellow, and the second temperature display area 113 is transparent; when the liquid temperature is higher than 40 ℃, the first temperature display area 112 becomes yellow and the second temperature display area 113 becomes red. The temperature display areas with two different colors are arranged in the embodiment, and the temperature display areas are more beneficial for a user to observe and master the temperature change compared with the single-color depth change.

Example 4:

referring to fig. 1 to 3, in addition to embodiment 1, a power supply 5 includes a battery compartment 51 and a battery 6 housed in the battery compartment 51; the battery compartment 51 is disposed on the outer wall of the needle tube 2, and a positive contact 52 and a negative contact 53 (not including the metal spring 54 in the battery compartment of fig. 1) connected to two poles of the heater 4 are disposed in the battery compartment.

The working principle is as follows: the heating, stirring and temperature display principles of the syringe are the same as those of example 1 or 2, except for the difference in the power supply structure. When heating is required, the battery 6 is loaded into the battery compartment 51 to form the power supply 5, and power is supplied to the heater 4 to heat the liquid in the needle tube 2. When heating is not required, the battery 6 may be removed from the battery compartment 51. The present embodiment can be easily disassembled by supplying electric power using the battery 6. When the battery is removed, the electrical components in the injector are the heater 4 (i.e., the heater), the positive contact 52, and the negative contact 53. The simplified electrical structure may further reduce the production costs and the stability of the injector.

Example 5:

referring to fig. 1 and 2, on the basis of embodiment 4, a metal elastic sheet (54) is arranged at the bottom in the battery compartment (51), and the metal elastic sheet (54) is located above the negative contact (53); the battery (6) is a button battery; the heater (4) is an electric heating wire.

The working principle is as follows: the heating, stirring and temperature display principles of the syringe are the same as those of example 1 or 2, except for the difference in the power supply structure. When the injector is used, the battery 6 (button battery) is placed in the battery compartment 51, the positive pole of the battery 6 is in contact with the positive pole contact 52 in the battery compartment 51, but the negative pole of the battery 6 is not in contact with the negative pole contact 53 due to the existence of the metal elastic sheet 54 (marked in figure 2), at this moment, the whole heating circuit is disconnected, and the heater 4 (electric heating wire) does not work. When heating is needed, a user presses down the battery 6 (button battery) by using a finger, the metal elastic sheet 54 is pressed down to be contacted with the negative contact 52, the negative electrode of the battery 6 (button battery) is communicated with the negative contact 53 through the metal elastic sheet 54, the heating circuit is closed, and the heater 4 (electric heating wire) starts to work. When the heating is required to be stopped, the user releases the fingers pressing the battery 6 (button cell), the battery 6 (button cell) is bounced by the metal elastic sheet 54, the heating circuit is disconnected, and the heating is stopped. The metal elastic sheet 54 plays a role of a circuit switch, reduces the assembly and disassembly times of the battery 6 and is more convenient to operate.

Example 6:

on the basis of the foregoing embodiment 1, the temperature display region 101 is made of a multi-component organic reversible thermochromic material, which has a characteristic of more color changes and is more favorable for a user to observe compared with a common single-component organic thermochromic material used for manufacturing the temperature display region 101 in embodiment 1. Meanwhile, the embodiment only adopts one reversible temperature-sensitive color-changing material, so that the same effect can be achieved without arranging two areas like the embodiment 2, and the production process is simplified. Compared with the similar inorganic materials, the multi-component organic reversible thermochromic material is more suitable for manufacturing the products with high sanitary requirements such as injectors and the like due to the non-toxic characteristic. If the multi-component organic reversible thermochromic material processed by the microcapsule wrapping technology is adopted in the embodiment, the temperature and the acid-base stability of the product can be improved, and the storage of the injector is facilitated.

Example 7:

in the embodiment 1, but the needle tube 2 is still made of conventional materials, the temperature display area 101 is a reversible thermochromic material coated or wrapped on the outer wall of the end of the needle tube 2 near the needle opening 1. Although the discoloration of the temperature sensitive material due to the presence of a certain barrier effect of the wall of the needle cannula 2 is less sensitive than in example 1. However, in this embodiment, the production raw materials are not changed, and the process is simpler than that in embodiment 1, and is more convenient for a manufacturer to perform technical upgrading and modification.

Example 9:

referring to fig. 7, in the present embodiment, a hollow compartment 21 is provided in the wall of the syringe 2, and the heater 4 and the temperature display area 101 are provided at different positions in the compartment 21.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (8)

1. The utility model provides a heating stirring temperature display type syringe, is including being equipped with needle mouth (1), needle tubing (2), piston (3), push rod (7), its characterized in that: one end of the piston (3) is connected with a push rod (7), and the other end of the piston is connected with a compressible stirrer (8); the compressible stirrer (8) and the piston (3) are inserted into the needle tube (2) from the open end of the needle tube (2); a heater (4) is embedded in the tube wall of the needle tube (2); a power supply (5) is arranged outside the needle tube (2); the power supply (5) is connected with the heater (4); the needle tube (2) is provided with a temperature display area (101) which can display the temperature range of liquid in the needle tube (2).

2. The heating and stirring temperature display type injector according to claim 1, wherein: the compressible stirrer (8) is in a spiral shape.

3. The heating and stirring temperature display type injector according to claim 1, wherein: the temperature display area (101) is made of reversible temperature-sensitive color-changing materials.

4. The heating and stirring temperature display type injector according to claim 1, wherein: the power supply (5) comprises a battery compartment (51) and a battery (6) which is arranged in the battery compartment (51); the battery compartment (51) is arranged on the outer wall of the needle tube (2), the battery compartment (51) is internally provided with a positive contact (52) and a negative contact (53), the positive pole of the heater (4) is connected with the positive pole of the battery (6) through the positive contact (52), and the negative pole of the heater (4) is connected with the negative pole of the battery (6) through the negative contact (53).

5. The heating and stirring temperature display type injector according to claim 4, wherein: a metal elastic sheet (54) is arranged at the bottom in the battery compartment (51), and the metal elastic sheet (54) is positioned above the negative contact (53) and is in contact with the negative electrode of the battery (6); the metal elastic sheet (54) can close and open the connection between the negative contact (53) and the negative electrode of the battery (6); the battery (6) is a button battery; the heater (4) is an electric heating wire.

6. The heating and stirring temperature display type injector according to claim 1, wherein: the temperature display area (101) is made of a multi-component compound thermochromic material.

7. The heating and stirring temperature display type injector according to claim 1, wherein: the temperature display area (101) is made of reversible temperature-sensing color-changing material on the outer wall of one end of the needle tube (2) close to the needle opening (1).

8. The heating and stirring temperature display type injector according to claim 1, wherein: a hollow interlayer (21) is arranged in the wall of the needle tube (2), and a heater (4) and a temperature display area (101) are respectively arranged at different positions in the interlayer (21).

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