CN221601260U - A drug injection port for a desflurane vaporizer - Google Patents

Abstract

The utility model relates to the technical field of desflurane evaporators, and in particular to a drug injection port for a desflurane evaporator, comprising: an interface (5), an interface cavity (53) formed inside, a drug inlet opening (51) at the top, and a drug outlet opening (52) at the bottom; a base (1), connected to a drug storage tank (13) of the evaporator, a base cavity (11) formed inside, a top connected to the interface (5), and a bottom wall provided with a plurality of through holes (12); a core shaft (3), having a first position for disconnecting the connection between the interface cavity (53) and the base cavity (11), and a second position for connecting the interface cavity (53) and the base cavity (11); and an elastic member (2), one end of which abuts against the base (1) and the other end of which abuts against the core shaft (3), and the core shaft (3) is moved from the second position to the first position by elastic force; a desflurane drug storage bottle (10) resists the elastic force by its own gravity and external thrust, and moves the core shaft (3) from the first position to the second position.

Description

A drug injection port for a desflurane vaporizer

Technical Field

The utility model relates to the technical field of Desflurane evaporators, in particular to a drug injection port for a Desflurane evaporator.

Background Art

Since the boiling point of desflurane is relatively low at 22.5°C, under standard atmospheric pressure, the storage and transportation of desflurane must be carried out in closed containers. At the same time, the storage bottle of desflurane has a special interface. When injecting the drug into the evaporator, there are also requirements for the injection port of the evaporator - the drug liquid cannot be sprayed out, and the storage bottle and the evaporator are both under positive pressure.

The flow-i desflurane injection port is a commonly used desflurane injection port. The core shaft is fixed, and a transmission pin is installed between the core shaft and the interface. The transmission pin is connected to the core shaft. When the drug storage bottle is inserted into the injection port, the transmission pin and the core shaft are pushed to move, opening the channel and allowing the anesthetic to flow in. However, its structure is complex, the volume is large, and the manufacturing cost is also high.

Therefore, there is an urgent need to design a desflurane injection port with a simple structure, small size and low cost.

Utility Model Content

The purpose of the utility model is to overcome the problems of complex structure, large volume and high manufacturing cost, thereby providing a desflurane vaporizer injection port. The utility model designs a desflurane vaporizer injection port that matches the desflurane storage bottle interface according to the characteristics of the desflurane storage bottle interface. The device has a simple structure, is safe and reliable, and also has functions such as two-layer anti-leakage protection and leakage monitoring.

In order to solve the above technical problems, the technical solution of the utility model provides a desflurane vaporizer injection port, comprising:

The interface 5 has an interface cavity 53 formed therein, a drug inlet opening 51 selectively circumferentially sealed and connected to the desflurane storage bottle 10 at the top, and a drug outlet opening 52 at the bottom;

The base 1 is connected to the medicine storage tank 13 of the evaporator, and a base cavity 11 is formed inside the base. The top is selectively circumferentially sealed and connected to the lower outer wall of the interface 5. The base 1 has a bottom wall, and the bottom wall is provided with a plurality of through holes 12 connected to the medicine storage tank 13 of the evaporator;

The mandrel 3 has a first position for disconnecting the connection between the interface cavity 53 and the base cavity 11, and a second position for connecting the interface cavity 53 and the base cavity 11; and

The elastic member 2 has one end abutting against the bottom wall of the base 1 and the other end abutting against the lower end of the core shaft 3, and provides an upward thrust for the core shaft 3 through its own elastic force, so that the core shaft 3 moves from the second position to the first position;

Wherein, under the action of its own gravity and external thrust, the desflurane storage bottle 10 resists the elastic force of the elastic member 2, so that the core shaft 3 moves from the first position to the second position.

Preferably, the core shaft 3 comprises: a core shaft body 31, which penetrates into the interface cavity 53 from the drug outlet opening 52, and its interior is hollow to form a core shaft drug inlet channel 33, and has a bottom wall, and a core shaft through groove 34 arranged in the axial direction near the bottom wall; when the core shaft 3 is in the first position, the core shaft through groove 34 is completely placed in the interface cavity 53, and when the core shaft 3 is in the second position, the core shaft through groove 34 connects the interface cavity 53 and the base cavity 11; and a core shaft base 32, which is placed in the base cavity 11, has a top wall fixedly connected to the bottom wall of the core shaft body 31, and the outer edge of the side wall has a plurality of grooves 36 arranged in the axial direction, and when the core shaft 3 is in the first position, the top wall of the core shaft base 32 is sealed and connected to the drug outlet opening 52; when the core shaft 3 is in the second position, a gap is left between the bottom of the core shaft base 32 and the bottom wall of the base 1; wherein the gap between the groove 36 and the inner wall of the base 1 serves as a flow channel for the desflurane liquid.

Preferably, the core shaft base 32 is hollow inside to form an accommodating cavity 37 , at least a portion of the elastic member 2 is located in the accommodating cavity 37 , and one end of the elastic member 2 abuts against the top wall of the accommodating cavity 37 .

Preferably, the outer diameter of the mandrel base 32 is the same as the inner diameter of the base 1 .

Preferably, the core shaft body 31 is provided with a core shaft boss 35 along the circumference of its outer wall; wherein, the core shaft boss 35 is located below the core shaft through groove 34 and forms a groove with the core shaft base 32, and a third sealing ring 4 is provided in the groove; the top wall of the core shaft base 32 is sealed and connected to the medicine outlet opening 52 through the third sealing ring 4.

Preferably, the upper inner wall of the base 1 has an internal thread, and is sealed and connected to the interface 5 via the internal thread; a second sealing ring 9 is also provided at the connection position between the base 1 and the interface 5 .

Preferably, the drug injection port of the Desflurane vaporizer further comprises: a sealing cover 6 matched with the drug inlet opening 51 , wherein the sealing cover 6 is selectively circumferentially sealedly connected to the drug inlet opening 51 .

Preferably, the medicine inlet opening 51 is threadedly connected to the sealing cover 6 , and a first sealing ring 8 is provided at the connection position between the medicine inlet opening 51 and the sealing cover 6 .

Preferably, the sealing cover 6 has a pressure gauge 7 for monitoring the pressure in the interface cavity 53 .

Preferably, the elastic member 2 is a spring.

The advantage of the utility model is that the injection port of the desflurane evaporator of the utility model has a slidable core shaft 3, which can move up and down under the action of external force, and is pressed by the elastic member 2 in a natural state, so that the core shaft 3 is sealed with the interface 5 through the third sealing ring 4. In addition, a cover 6 is designed at the interface 5, which can play a role of secondary sealing. A pressure gauge 7 is installed on the cover 6 to monitor the pressure when the core shaft 3 is not tightly sealed, and remind the user that the core shaft 3 may leak.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a cross-sectional view of a mandrel 3 of a drug injection port 14 of a Desflurane vaporizer provided in an embodiment, when the mandrel 3 is located at a first position;

FIG2 is a cross-sectional view of the mandrel 3 of the injection port 14 of the Desflurane vaporizer provided in the embodiment when it is located at the second position;

FIG3 is a cross-sectional view of the interface 5;

FIG4 is a perspective view of the mandrel 3;

FIG5 is a cross-sectional view of the mandrel 3 and the interface 5 when the mandrel 3 is located at the second position;

FIG6 is a perspective view of the cover 6 mounted to the interface 5;

FIG7 is a perspective view of the desflurane storage bottle 10 installed on the interface 5;

FIG8 is a flow path diagram of the desflurane liquid when the mandrel 3 is located at the second position;

FIG. 9 is a perspective view of the installation of the drug injection port 14 of the Desflurane vaporizer to the drug storage tank 13 .

Figure ID

1. Base 2. Elastic part 3. Mandrel

4. First sealing ring 5. Interface 6. Cover

7. Pressure gauge 8. First sealing ring 9. Second sealing ring

10. Desflurane storage bottle 11. Base cavity 12. Through hole

13. Drug storage tank 14. Desflurane evaporator drug injection port 31. Mandrel body

32. Mandrel base 33. Mandrel medicine inlet channel 34. Mandrel slot

35. Mandrel boss 36. Groove 51. Drug inlet opening

52. Medicine outlet opening 53. Interface cavity

DETAILED DESCRIPTION

The technical solution provided by the utility model is further explained below in conjunction with embodiments.

The desflurane evaporator injection port 14 provided in this embodiment, as shown in FIG. 1 and FIG. 2 , includes: a base 1, an elastic member 2, a core shaft 3, a third sealing ring 4, an interface 5, a sealing cover 6, a pressure gauge 7, a first sealing ring 8 and a second sealing ring 9.

As shown in FIG. 3 , an interface cavity 53 is formed inside the interface 5 , the top of which has a drug inlet opening 51 selectively circumferentially sealed and connected to the desflurane storage bottle 10 or the cover 6 , and the bottom of which has a drug outlet opening 52 .

As shown in FIG9 , a mounting hole is provided at the bottom of the base 1 for connecting with the medicine storage tank 13 of the evaporator. As shown in FIG1-2 , a base cavity 11 is formed inside the base 1, and has a bottom wall provided with a plurality of through holes 12 so that the desflurane liquid can flow through the bottom wall into the evaporator; the top of the base 1 is selectively circumferentially sealed to the lower outer wall of the interface 5, and specifically, an internal thread is provided at the top of the base 1, and the interface 5 is connected thereto through the internal thread and sealed by a second sealing ring 9.

The core shaft 3 can have a first position as shown in FIG. 1 in which it is sealedly connected to the medicine outlet opening 51 of the interface 5 to disconnect the connection between the interface cavity 53 of the interface 5 and the base cavity 11 of the base 1, and can also have a second position as shown in FIG. 2 in which the interface cavity 53 of the interface 5 and the base cavity 11 of the base 1 are connected to allow the desflurane liquid to pass through.

As shown in Figures 4-5, the mandrel 3 includes:

The core shaft body 31 passes through the interface cavity 53 from the drug outlet opening 52, and its interior is hollow to form a core shaft drug inlet channel 33, and has a bottom wall, and a core shaft through groove 34 arranged in the axial direction near the bottom wall; as shown in Figure 1, when the core shaft 3 is in the first position, the core shaft through groove 34 is completely placed in the interface cavity 53, and as shown in Figures 2 and 5, when the core shaft 3 is in the second position, the core shaft through groove 34 connects the interface cavity 53 and the base cavity 11.

A core shaft boss 35 is provided at one end close to the bottom wall, circumferentially connected to the outer edge of the side wall of the core shaft body 31 and located below the core shaft through groove 34; a groove is formed between the core shaft boss 35 and the core shaft base 32, and the third sealing ring 4 is embedded in it.

The mandrel base 32 is placed in the base cavity 11, and its interior is hollow to form a receiving cavity 37 of the elastic member 2 as shown in FIG5 , and has a top wall connected to the bottom wall of the mandrel body 31, and the outer edge of the side wall has a plurality of grooves 36 arranged along the axial direction. The outer diameter of the mandrel base 32 can be the same as the inner diameter of the base 1. When the mandrel 3 is in the second position, a gap is left between the bottom of the mandrel base 32 and the bottom wall of the base 1.

As shown in Figures 1 and 2, an elastic member 2 is installed between the base 1 and the core shaft 3; at least a part of the elastic member 2 is located inside the accommodating chamber 37, the top of the elastic member 2 is connected to the top wall of the accommodating chamber 37, and the bottom is connected to the bottom wall of the base 1. In the natural state, the elastic member 2 provides an upward thrust to the core shaft 3 through elastic force, and the third sealing ring 4 provided on the core shaft 3 is pressed to the bottom of the medicine outlet opening 52 of the interface 5 under the action of the elastic member 2, so that the core shaft 3 and the interface 5 are sealed in the natural state, that is, they are located in the first position. In the case of external force, such as the gravity of the desflurane storage bottle 10 or the impact force when the desflurane storage bottle 10 releases pressure, the external force resists the elastic force of the elastic member, presses down the elastic member 2 through the core shaft 3, and makes the core shaft 3 located in the second position. After the external force is removed, the elastic member 2 restores the core shaft 3 to the first position through elastic force. A plurality of through holes 12 are provided at the connection between the elastic member 2 and the base 1. In this embodiment, the elastic member 2 is a spring, but in other embodiments, it may be another type of elastic member as long as it can undergo elastic deformation.

As shown in Figures 1, 2 and 6, the upper end of the interface 5 is connected to the cover 6 by a thread and sealed by a first sealing ring 8. A pressure gauge 7 is installed on the top of the cover 6 to monitor whether there is leakage between the mandrel 3 and the interface 5. As shown in Figure 9, the pressure in the medicine storage tank 13 will be transmitted to the pressure gauge, so that the reading of the pressure gauge is no longer 0. Specifically, the bottom of the desflurane evaporator injection port 14 is connected to the medicine storage tank 13 through a through hole 12. Desflurane is gaseous at room temperature and will generate pressure in a closed space, similar to the gas stored in a gas tank. Therefore, when the medicine storage tank 13 is filled with desflurane anesthetic, pressure will be generated. If the first sealing ring 8 leaks, the desflurane evaporator injection port 14 will not be sealed tightly, resulting in the air pressure generated inside the medicine storage tank 13 being balanced with the pressure inside the interface 5. Since the internal pressure of the medicine storage tank 13 is the same as the internal pressure of the interface 5 when leaking, the internal pressure of the interface 5 measured by the pressure gauge 7 is the internal pressure of the medicine storage tank 13.

The flow path of the Desflurane liquid from the drug inlet opening 51 of the interface to the through hole 12 of the base 1 will be described below in conjunction with the accompanying drawings.

Remove the cover 6 shown in Figure 6, and as shown in Figure 7, install the Desflurane storage bottle 10 to the interface 5. As shown in Figure 9, the Desflurane evaporator injection port 14 is fixed to the evaporator storage tank 13 by screws.

As shown in FIG8 , the desflurane storage bottle 10 is against the top of the mandrel body 31 of the mandrel 3. There is a step inside the nozzle of the desflurane storage bottle 10. When in use, the user will push the desflurane storage bottle 10, and the step inside the nozzle of the desflurane storage bottle 10 will press against the mandrel 3. The user's thrust will resist the elastic force of the elastic member 2, so that the mandrel 3 moves in the direction of the through hole 12, so that the mandrel 3 moves from the first position to the second position. As shown in FIG5 and FIG8 , the desflurane storage bottle 10 is connected to the mandrel drug inlet channel 33. Most of the desflurane liquid in the desflurane storage bottle 10 can flow directly into the mandrel drug inlet channel 33, and may also leak into the interface cavity 53. As shown in FIG5 , when the mandrel 3 is in the second position, the mandrel through groove 34 connects the interface cavity 53 and the base cavity 11. The desflurane liquid flowing into the mandrel drug inlet channel 33 can flow directly into the base cavity 11 through the part of the mandrel through groove 34 located in the base cavity 11. The Desflurane liquid flowing into the interface cavity 53 can enter the mandrel medicine inlet channel 33 through the portion of the mandrel through groove 34 located in the interface cavity 53, and then flow into the base cavity 11 through the portion of the mandrel through groove 34 located in the base cavity 11. The diameter of the medicine outlet opening 52 is larger than the outer diameter of the mandrel body 31. The Desflurane liquid flowing into the interface cavity 53 can also flow into the base cavity 11 through the gap between the medicine outlet opening 52 and the mandrel body 31.

It is worth noting that part of the Desflurane liquid that flows directly from the Desflurane storage bottle 10 into the core shaft drug inlet channel 33 may overflow from the core shaft through groove 34 located in the interface cavity 53 into the interface cavity 53 due to excessive flow or excessive impact force, but the subsequent process of flowing into the base cavity 11 is the same as described above.

The outer wall of the mandrel base 32 is connected to the inner wall of the base cavity 11, and a plurality of channels are formed with the inner wall of the base cavity 11 through a plurality of grooves 36. After the Desflurane liquid enters the base cavity 11, it flows through the plurality of channels to the gap between the bottom of the mandrel base 32 and the bottom wall of the base 1. Then, the Desflurane liquid flows out of the base cavity 11 through the through hole 12 on the bottom wall of the base 1 and enters the evaporator.

After the injection is completed, the desflurane storage bottle 10 is removed, and under the action of the elastic member 2, the mandrel 3 is restored from the second position to the first position as shown in FIG1. The mandrel base 32 is pressed against the bottom of the drug outlet opening 52 of the interface 5 by the third sealing ring 4 embedded between the mandrel boss 35 and the mandrel base 32, so that the mandrel 3 and the interface 5 are sealed in a natural state, that is, the drug outlet opening 52 is sealed, so that the base 1 and the interface 5 are disconnected.

After the desflurane bottle 10 is removed, the drug inlet opening 51 of the interface 5 can be sealed by the cover 6. Thus, the drug inlet opening 51 at the top of the interface 5 is sealed by the cover 6, and the drug outlet opening 52 at the bottom is sealed by the mandrel 3. The pressure gauge 7 placed on the cover 6 can monitor the pressure inside the interface 5. If there is a deviation between the measured pressure value and the expected pressure value, it proves that there is a leakage at the drug inlet opening 51 and/or the drug outlet opening 52 of the interface 5.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the embodiments, a person skilled in the art should understand that any modification or equivalent replacement of the technical solution of the utility model does not deviate from the spirit and scope of the technical solution of the utility model, and should be included in the scope of the claims of the utility model.

Claims (10)

1. A desflurane evaporator drug injection port, comprising:

The interface (5) is internally provided with an interface cavity (53), the top of the interface is provided with a medicine inlet opening (51) which is selectively connected to the desflurane medicine storage bottle (10) in a circumferential sealing way, and the bottom of the interface is provided with a medicine outlet opening (52);

The base (1) is connected with a medicine storage tank (13) of the evaporator, a base cavity (11) is formed in the base, the top of the base is selectively and circumferentially connected to the outer wall of the lower part of the interface (5) in a sealing mode, the base (1) is provided with a bottom wall, and a plurality of through holes (12) communicated with the medicine storage tank (13) of the evaporator are formed in the bottom wall;

-a spindle (3) having a first position in which it breaks communication between said interface cavity (53) and the base cavity (11), and a second position in which it communicates said interface cavity (53) and the base cavity (11); and

One end of the elastic piece (2) is abutted against the bottom wall of the base (1), the other end of the elastic piece is abutted against the lower end of the mandrel (3), and upward thrust is provided for the mandrel (3) through self elasticity, so that the mandrel (3) moves from the second position to the first position;

Under the action of self gravity and external pushing force, the desflurane medicine storage bottle (10) resists the elastic force of the elastic piece (2) to enable the secondary core shaft (3) to move from the first position to the second position.

2. Desflurane evaporator drug injection port according to claim 1, characterized in that the mandrel (3) comprises:

The mandrel body (31) penetrates into the interface cavity (53) from the medicine outlet opening (52), the interior of the mandrel body is hollow to form a mandrel medicine inlet channel (33), the mandrel body is provided with a bottom wall, and a mandrel through groove (34) arranged along the axial direction is arranged near the bottom wall; when the mandrel (3) is positioned at the first position, the mandrel through groove (34) is completely arranged in the interface cavity (53), and when the mandrel (3) is positioned at the second position, the mandrel through groove (34) is communicated with the interface cavity (53) and the base cavity (11); and

The mandrel base (32) is arranged in the base cavity (11) and is provided with a top wall fixedly connected with the bottom wall of the mandrel body (31), the outer edge of the side wall is provided with a plurality of grooves (36) arranged along the axial direction, and when the mandrel (3) is positioned at the first position, the top wall of the mandrel base (32) is connected to the medicine outlet opening (52) in a sealing way; when the mandrel (3) is positioned at the second position, a gap is reserved between the bottom of the mandrel base (32) and the bottom wall of the base (1); wherein, the gap between the groove (36) and the inner wall of the base (1) is used as a desflurane liquid circulation channel.

3. The desflurane evaporator medicine injection port according to claim 2, wherein the mandrel base (32) is hollow inside to form a containing cavity (37), at least one part of the elastic piece (2) is located in the containing cavity (37), and one end of the elastic piece (2) is abutted to the top wall of the containing cavity (37).

4. Desflurane evaporator drug injection port according to claim 2, characterized in that the outer diameter of the mandrel base (32) is the same as the inner diameter of the base (1).

5. Desflurane evaporator drug injection port according to claim 2, characterized in that the mandrel body (31) is provided with a mandrel boss (35) along its outer wall circumference; wherein,

The mandrel boss (35) is positioned below the mandrel through groove (34) and forms a groove with the mandrel base (32), and a third sealing ring (4) is arranged in the groove; the top wall of the mandrel base (32) is connected to the medicine outlet opening (52) in a sealing way through a third sealing ring (4).

6. The desflurane evaporator drug injection port according to claim 1, characterized in that the upper inner wall of the base (1) is provided with internal threads and is in sealing connection with the port (5) through the internal threads; the connection position of the base (1) and the interface (5) is also provided with a second sealing ring (9).

7. The desflurane evaporator drug injection port of claim 1, the desflurane evaporator medicine injection port is characterized by further comprising: and a cover (6) matched with the medicine inlet opening (51), wherein the cover (6) is selectively and circumferentially connected with the medicine inlet opening (51) in a sealing way.

8. The desflurane evaporator medicine injection port according to claim 7, characterized in that the medicine inlet opening (51) is in threaded connection with the sealing cover (6), and a first sealing ring (8) is arranged at the connection position of the medicine inlet opening (51) and the sealing cover (6).

9. Desflurane evaporator drug injection port according to claim 7, characterized in that the cover (6) is provided with a pressure gauge (7) for monitoring the pressure in the interface cavity (53).

10. Desflurane evaporator drug injection port according to claim 1, characterized in that the elastic member (2) is a spring.