A tooling interface for calibrating anesthetic gases

Abstract

This invention relates to the field of medical device technology, and in particular to a tooling interface for calibrating anesthetic gases. When the male Luer connector or the male conical connector of the anesthetic gas module of the anesthesia machine is connected to the female connector of the corresponding bushing (1), the male connector triggers the trigger rod (11), which drives the cap-shaped sealing ring (9) to move away from the valve port of the first end of the evaporator calibration conical connector (4) through the evaporator calibration valve core (3), so as to open the valve port of the evaporator calibration conical connector (4) and squeeze the limiting spring (10) at the same time, so that the gas output from the evaporator output end flows into the anesthetic gas module of the anesthesia machine for calibration. After the male connector is removed, under the action of the limiting spring (10), the cap-shaped sealing ring (9) is driven by the evaporator calibration valve core (3) to move towards the valve port of the first end of the evaporator calibration conical connector (4), so that the cap-shaped sealing ring (9) abuts against the valve port, disconnecting the connection between the evaporator output end and the anesthetic gas module of the anesthesia machine.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a tooling interface for calibrating anesthetic gases. Background Technology

[0002] The vaporizer is a component of an anesthesia machine. The concentration of anesthetic gas in the vaporizer is a crucial parameter with significant clinical importance. The concentration of anesthetic gas output from the vaporizer needs to be monitored and calibrated regularly to prevent excessive deviations between the output gas concentration and the set value, which could affect the normal operation of the equipment.

[0003] In practical applications, the specific calibration methods vary depending on the design structure of different anesthesia machines, and can be broadly divided into two types: internal and external.

[0004] For vaporizer output lines located inside the anesthesia machine, an internal connection can be used: open the equipment casing, connect the calibration fixture to the vaporizer output end, and perform calibration. The advantage is direct connection to the output end, resulting in higher measurement accuracy. The disadvantage is that it requires opening the casing and inserting / removing the tubing, making the operation more complex.

[0005] For external calibration, the calibration fixture is connected to the outside of the anesthesia machine at a location that connects to the vaporizer output. The advantage is that it does not require opening the outer casing for operation, but the disadvantage is that it is far from the vaporizer output, which affects the calibration accuracy. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned defects of the prior art and thus provide a tooling interface for calibrating anesthetic gases.

[0007] To solve the above-mentioned technical problems, the tooling interface for calibrating anesthetic gases provided by the technical solution of the present invention includes: an evaporator calibration pipe connector 8, an evaporator calibration cone connector 4, an evaporator calibration valve core 3, a limiting spring 10, a cap-shaped sealing ring 9, a bushing 1, and a trigger rod 11; wherein,

[0008] The evaporator calibration pipe joint 8 has a pipe joint cavity for connecting to the evaporator output end;

[0009] The evaporator calibration tapered connector 4 has a tapered connector cavity and is connected to the evaporator calibration pipe connector 8;

[0010] The evaporator calibration valve core 3 has a valve core cavity located inside the conical joint cavity. Its first end extends through the evaporator calibration conical joint 4 to the pipe joint cavity and is connected to the cap-shaped sealing ring 9. The cap-shaped sealing ring 9 has a contact surface that abuts against the valve port at the first end of the evaporator calibration conical joint 4.

[0011] The bushing 1 is located inside the conical joint cavity and is connected to the evaporator calibration conical joint 4. It is provided with a Luer connector female and a conical connector female surrounding the Luer connector female. The Luer connector female has a flow channel communicating with the valve core cavity. The bushing 1 is provided with a trigger rod through hole at the end face alignment position of the second end of the evaporator calibration valve core 3.

[0012] The trigger rod 11 passes through the trigger rod through hole and abuts against the end face of the second end of the evaporator calibration valve core 3;

[0013] When the male Luer connector or male conical connector of the anesthesia gas module of the anesthesia machine is connected to the female connector of the corresponding bushing 1, the male connector triggers the trigger rod 11, which drives the cap-shaped sealing ring 9 to move away from the valve port of the first end of the evaporator calibration conical connector 4 through the evaporator calibration valve core 3, so as to open the valve port of the evaporator calibration conical connector 4. At the same time, the limiting spring 10 is squeezed, so that the gas output from the evaporator output end enters the valve core cavity of the evaporator calibration valve core 3 through the pipe joint cavity and the conical connector cavity, and then flows into the anesthesia gas module of the anesthesia machine from the flow channel for calibration. After the male connector is removed, under the action of the limiting spring 10, the cap-shaped sealing ring 9 is driven by the evaporator calibration valve core 3 to move towards the valve port of the first end of the evaporator calibration conical connector 4, so that the cap-shaped sealing ring 9 abuts against the valve port, disconnecting the connection between the evaporator output end and the anesthesia gas module of the anesthesia machine.

[0014] Preferably, the first end of the evaporator calibration cone connector 4 extends into the pipe connector cavity and is fixedly connected to the pipe connector cavity; a conical surface is provided on the end face of the first end of the evaporator calibration cone connector 4; the contact surface of the cap-shaped sealing ring 9 abuts against the conical surface.

[0015] Preferably, the inner wall of the evaporator calibration cone joint 4 is provided with a first step, a second step, and a third step sequentially from the first end to the second end; the outer wall of the evaporator calibration valve core 3 is provided with a first protrusion, a second protrusion, and a third protrusion sequentially from the first end to the second end; wherein, the outer wall of the evaporator calibration valve core 3 between the first protrusion and the second protrusion is slidably connected to the inner wall between the first step and the second step of the evaporator calibration cone joint 4; the second protrusion has a shape matching the second step; the outer wall of the evaporator calibration valve core 3 between the second protrusion and the third protrusion is slidably connected to the inner wall between the second step and the third step of the evaporator calibration cone joint 4; the third protrusion has a shape matching the third step.

[0016] Preferably, the limiting spring 10 is arranged along the axial direction of the evaporator calibration valve core 3, with its first end abutting against the first step of the evaporator calibration cone joint 4 and its second end abutting against the first protrusion of the evaporator calibration valve core 3.

[0017] Preferably, the inner wall of the evaporator calibration cone joint 4 is provided with a fourth step after the third step, which is used to abut the end face of the first end of the bushing 1.

[0018] Preferably, the second end of the evaporator calibration valve core 3 is provided with a Luer female connector receiving part; the Luer female connector of the bushing 1 extends into the Luer female connector receiving part.

[0019] Preferably, the evaporator calibration cone connector 4 is threadedly connected to the evaporator calibration tube connector 8 and the bushing 1, respectively;

[0020] The evaporator calibration pipe joint 8, evaporator calibration cone joint 4, evaporator calibration valve core 3, cap-shaped sealing ring 9, Luer connector female of bushing 1 and cone connector female of bushing 1 are coaxially arranged.

[0021] Preferably, the outer wall of the evaporator calibration cone connector 4 is provided with a flange, the end face of which is connected to the second end face of the evaporator calibration tube connector 8, and a second O-ring seal 7 is provided between the end face of the flange and the second end face of the evaporator calibration tube connector 8 to seal the connection between the end faces of the evaporator calibration cone connector 4 and the evaporator calibration tube connector 8.

[0022] Preferably, the evaporator calibration valve core 3 has a groove on its outer wall between the second and third protrusions, and a second Y-shaped sealing ring 6 is installed in the groove to seal the gap between the outer wall of the evaporator calibration valve core 3 and the inner wall of the evaporator calibration conical connector 4; the bushing 1 has a groove on its outer wall at the corresponding position of the Luer connector female head, and a first Y-shaped sealing ring 5 is installed in the groove to seal the gap between the outer wall of the Luer connector female head of the bushing 1 and the inner wall of the Luer connector receiving part of the evaporator calibration valve core 3; the evaporator calibration conical connector 4 has a groove at the corresponding position of the conical connector female head of the bushing 1, and a second O-ring 2 is installed in the groove to seal the gap between the inner wall of the evaporator calibration conical connector 4 and the outer wall of the conical connector female head of the bushing 1.

[0023] Compared with the internal calibration scheme, the tooling interface for anesthetic gas calibration provided by this invention does not require opening the equipment casing or a separate calibration tooling to perform calibration, making it simple to operate. Compared with the external calibration scheme, it does not require a separate calibration tooling, is closer to the evaporator output end, and has higher calibration accuracy. Attached Figure Description

[0024] Figure 1 This is a first cross-sectional schematic diagram of the tooling interface for anesthetic gas calibration according to the present invention.

[0025] Figure 2 This is a perspective view of the tooling interface for anesthetic gas calibration according to the present invention;

[0026] Figure 3This is a second cross-sectional schematic diagram of the tooling interface for anesthetic gas calibration according to the present invention;

[0027] Figure 4 This is a schematic diagram of the male conical connector of an anesthesia machine;

[0028] Figure 5 For the male Luer connector of the anesthesia machine. Detailed Implementation

[0029] The technical solutions provided by the present invention will be further illustrated below with reference to the embodiments.

[0030] like Figures 1 to 3 As shown, the tooling interface for anesthetic gas calibration provided in this embodiment includes: an vaporizer calibration bushing 1, a first O-ring rubber seal 2, an vaporizer calibration valve core 3, an vaporizer calibration conical connector 4, a first Y-ring seal 5, a second Y-ring seal 6, a second O-ring rubber seal 7, an vaporizer calibration pipe connector 8, a cap-shaped sealing ring 9, a limiting spring 10, and a trigger rod 11. The tooling interface for anesthetic gas calibration provided in this embodiment is used to connect to the anesthetic gas module connection port of an anesthesia machine. The anesthetic gas module connection port includes: Figure 4 The shown tapered male connector or Figure 5 The Luer connector male shown.

[0031] Evaporator calibration pipe connector 8 has a pipe connector connection part connected to the evaporator output end and a pipe connector cavity communicating with the pipe connector connection part.

[0032] The evaporator calibration tapered connector 4 has a tapered connector cavity. The first end of the evaporator calibration tapered connector 4 extends into the pipe connector cavity and is fixedly connected to the pipe connector cavity, for example, by a threaded connection, and is sealed with a sealing ring. A tapered surface is provided on the end face of the first end of the evaporator calibration tapered connector 4. The inner wall of the evaporator calibration tapered connector 4 is provided with a first step, a second step, a third step, and a fourth step in sequence from the first end to the second end.

[0033] The evaporator calibration valve core 3 has a valve core cavity and is located inside the conical joint cavity. The first end face of the evaporator calibration valve core 3 protrudes from the conical surface. The second end of the evaporator calibration valve core 3 is provided with a Luer female connector receiving part. The outer wall of the evaporator calibration valve core 3 is provided with a first protrusion, a second protrusion, and a third protrusion in sequence from the first end to the second end. The outer wall of the evaporator calibration valve core 3 between the first and second protrusions is slidably connected to the inner wall between the first step and the second step of the evaporator calibration conical joint 4. The second protrusion has a shape that matches the second step. The outer wall of the evaporator calibration valve core 3 between the second and third protrusions is slidably connected to the inner wall between the second step and the third step of the evaporator calibration conical joint 4. The third protrusion has a shape that matches the third step. The fourth step of the evaporator calibration conical joint 4 is used to abut against the first end of the bushing 1.

[0034] The limiting spring 10 is set along the axis of the evaporator calibration valve core 3, with its first end abutting against the first step of the evaporator calibration cone joint 4 and its second end abutting against the first protrusion of the evaporator calibration valve core 3.

[0035] The cap-shaped sealing ring 9 is connected to the portion of the evaporator calibration valve core 3 that protrudes from the conical surface and has a contact surface that abuts against the conical surface. The cap-shaped sealing ring 9 is an elastic body and can be fitted onto the evaporator calibration valve core 3.

[0036] Bushing 1 is located inside the evaporator calibration tapered connector 4 and is threadedly connected to the inner wall of the evaporator calibration tapered connector 4. A Luer connector female is provided at the first end of bushing 1 along the axial direction of the evaporator calibration valve core 3. This Luer connector female has a flow channel and extends to the Luer connector female receiving portion of the evaporator calibration valve core 3, communicating with the valve core cavity of the evaporator calibration valve core 3. A trigger rod through hole is provided at the corresponding position on the end face of the second end of the evaporator calibration valve core 3 at the first end of bushing 1. Bushing 1 has an inner wall shape that matches and connects with the male tapered connector of the anesthesia machine, serving as the female tapered connector, and the second end of bushing 1 is open. The Luer connector female and the tapered connector female are coaxially arranged.

[0037] Trigger rod 11, the first end of trigger rod 11 extends through trigger rod through hole to the second end face of evaporator calibration valve core 3.

[0038] During application, the vaporizer calibration pipe connector 8 is connected to the vaporizer output end as the air inlet, and the bushing 1 is connected to the male conical connector or Luer connector of the anesthesia machine as the air outlet. The bushing 1 is connected to the anesthetic gas module (male conical connector or Luer connector) on the anesthesia machine to measure and calibrate the concentration of anesthetic gas.

[0039] Operating State 1 (Non-calibration State): When the bushing 1 is not connected to any joint, the contact surface of the cap-shaped sealing ring 9 abuts against the conical surface of the first end of the evaporator calibration cone joint 4, disconnecting the connection between the pipe joint cavity and the cone joint cavity, that is, closing the valve port. When the valve port is closed, the gas output by the evaporator is blocked by the valve port to prevent leakage.

[0040] Operating State Two (Calibration State): When bushing 1 is connected to the male conical connector or Luer connector of the anesthesia machine, the external male connector contacts the trigger rod, causing the trigger rod to move towards the first end. The trigger rod pushes the vaporizer calibration valve core 3, causing the contact surface of the cap-shaped sealing ring 9 to leave the conical surface of the vaporizer calibration conical connector 4, thereby connecting the pipe connector cavity and the conical connector cavity, which in turn drives the valve port to be in the open state. The gas output from the vaporizer enters the valve core cavity of the vaporizer calibration valve core 3 through the pipe connector cavity and the conical connector cavity, and then flows into the anesthesia machine from the anesthetic gas module on the anesthesia machine, completing the measurement and calibration.

[0041] After calibration, remove the male conical connector or Luer connector. Under the action of the limit spring, the evaporator calibration valve core 3 returns to its original position, causing the contact surface of the cap-shaped sealing ring 9 to abut against the conical surface of the first end of the evaporator calibration conical connector 4, thus disconnecting the connection between the pipe joint cavity and the conical connector cavity, thereby automatically closing the valve port.

[0042] The outer wall of the evaporator calibration cone connector 4 is provided with a flange. The end face of the flange is connected to the second end face of the evaporator calibration tube connector 8. A second O-ring 7 is provided between the end face of the flange and the second end face of the evaporator calibration tube connector 8 to seal the connection between the end faces of the evaporator calibration cone connector 4 and the evaporator calibration tube connector 8.

[0043] A groove is provided on the outer wall of the evaporator calibration valve core 3 between the second protrusion and the third protrusion. A second Y-shaped sealing ring 6 is installed in the groove to seal the gap between the outer wall of the evaporator calibration valve core 3 and the inner wall of the evaporator calibration cone joint 4.

[0044] The bushing 1 has a groove on the outer wall corresponding to the position of the Luer connector female. The first Y-type sealing ring 5 is installed in the groove to seal the gap between the outer wall of the Luer connector female of the bushing 1 and the inner wall of the Luer connector receiving part of the evaporator calibration valve core 3.

[0045] The evaporator calibration tapered connector 4 has a groove at the corresponding position of the tapered connector female head of the bushing 1. The second O-ring 2 is installed in the groove to seal the gap between the inner wall of the evaporator calibration tapered connector 4 and the outer wall of the tapered connector female head of the bushing 1.

[0046] The assembly process of the tooling interface for anesthetic gas calibration provided in this embodiment is as follows:

[0047] 1. First, install the second Y-type sealing ring 6 into the evaporator calibration valve core 3.

[0048] 2. Assemble the evaporator calibration valve core 3, the limit rod spring 10, and the evaporator calibration cone joint 4 together, and fix them with the cap-shaped sealing ring 9.

[0049] 3. Assemble the evaporator calibration bushing 1 and the first Y-type sealing ring 5 into one component.

[0050] 4. Place the first O-ring rubber seal 2 into the evaporator calibration cone joint 4.

[0051] 5. Screw the evaporator calibration bushing 1 into the evaporator calibration cone joint 4 and secure them together.

[0052] 6. Finally, use the evaporator calibration pipe connector 8 to fix the second O-ring rubber seal 7 to the evaporator calibration tapered connector 4 together, and the assembly is complete.

[0053] The key innovations of this invention lie in two aspects. First, by utilizing the anesthetic gas module built into the anesthesia machine to calibrate the electronic anesthesia machine, the reliance on additional tooling can be reduced. Second, the bushing 1 adopts a dual-interface trigger-type structure design, which is compatible with different anesthetic gas module connection ports (conical connectors or Luer connectors), thus exhibiting strong compatibility.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A tooling interface for calibrating anesthetic gases, comprising: Evaporator calibration pipe joint (8), evaporator calibration cone joint (4), evaporator calibration valve core (3), limit spring (10), cap-shaped sealing ring (9), bushing (1), and trigger rod (11); among which, The evaporator calibration pipe connector (8) has a pipe connector cavity for connecting to the evaporator output end; The evaporator calibration cone joint (4) has a cone joint cavity and is connected to the evaporator calibration pipe joint (8); The evaporator calibration valve core (3) has a valve core cavity located inside the conical joint cavity. Its first end extends through the evaporator calibration conical joint (4) to the pipe joint cavity and is connected to the cap-shaped sealing ring (9). The cap-shaped sealing ring (9) has a contact surface that abuts against the valve port at the first end of the evaporator calibration conical joint (4). The bushing (1) is located in the conical joint cavity and is connected to the evaporator calibration conical joint (4). It is provided with a Luer connector female and a conical joint female surrounding the Luer connector female. The Luer connector female has a flow channel communicating with the valve core cavity. The bushing (1) is provided with a trigger rod through hole at the end face alignment position of the second end of the evaporator calibration valve core (3). The trigger rod (11) passes through the trigger rod through hole and abuts against the end face of the second end of the evaporator calibration valve core (3); When the male Luer connector or male conical connector of the anesthetic gas module of the anesthetic machine is connected to the female connector of the corresponding bushing (1), the male connector triggers the trigger rod (11), which drives the cap-shaped sealing ring (9) to move away from the valve port of the first end of the evaporator calibration conical connector (4) through the evaporator calibration valve core (3), so as to open the valve port of the evaporator calibration conical connector (4) and squeeze the limiting spring (10) at the same time, so that the gas output from the evaporator output end enters the valve core cavity of the evaporator calibration valve core (3) through the pipe joint cavity and the conical connector cavity, and then flows into the anesthetic gas module of the anesthetic machine from the flow channel for calibration; after the male connector is removed, under the action of the limiting spring (10), the cap-shaped sealing ring (9) is driven by the evaporator calibration valve core (3) to move towards the valve port of the first end of the evaporator calibration conical connector (4), so that the cap-shaped sealing ring (9) abuts against the valve port, disconnecting the connection between the evaporator output end and the anesthetic gas module of the anesthetic machine.

2. The tooling interface for calibrating anesthetic gases according to claim 1, characterized in that, The first end of the evaporator calibration cone connector (4) extends into the pipe connector cavity and is fixedly connected to the pipe connector cavity. A tapered surface is provided on the end face of the first end of the evaporator calibration tapered connector (4); The contact surface of the cap-shaped sealing ring (9) abuts against the conical surface.

3. The tooling interface for calibrating anesthetic gases according to claim 1, characterized in that, The inner wall of the evaporator calibration cone joint (4) is provided with a first step, a second step and a third step from the first end to the second end; the outer wall of the evaporator calibration valve core (3) is provided with a first protrusion, a second protrusion and a third protrusion from the first end to the second end; wherein, The evaporator calibration valve core (3) is slidably connected between the outer wall of the first protrusion and the second protrusion and the inner wall of the first step and the second step of the evaporator calibration cone joint (4); the second protrusion has a shape that matches the second step; The outer wall of the evaporator calibration valve core (3) between the second protrusion and the third protrusion is slidably connected to the inner wall between the second step and the third step of the evaporator calibration cone joint (4); the third protrusion has a shape that matches the third step.

4. The tooling interface for calibrating anesthetic gases according to claim 3, characterized in that, The limiting spring (10) is arranged along the axis of the evaporator calibration valve core (3), with its first end abutting against the first step of the evaporator calibration cone joint (4) and its second end abutting against the first protrusion of the evaporator calibration valve core (3).

5. The tooling interface for calibrating anesthetic gases according to claim 3, characterized in that, The inner wall of the evaporator calibration cone joint (4) has a fourth step after the third step, which is used to abut the end face of the first end of the bushing (1).

6. The tooling interface for calibrating anesthetic gases according to claim 1, characterized in that, The second end of the evaporator calibration valve core (3) is provided with a Luer female connector receiving part; the Luer female connector of the bushing (1) extends into the Luer female connector receiving part.

7. The tooling interface for calibrating anesthetic gases according to claim 1, characterized in that, The evaporator calibration tapered connector (4) is threadedly connected to the evaporator calibration pipe connector (8) and the bushing (1) respectively; The evaporator calibration pipe joint (8), evaporator calibration cone joint (4), evaporator calibration valve core (3), cap-shaped sealing ring (9), Luer connector female of bushing (1) and cone connector female of bushing (1) are coaxially arranged.

8. The tooling interface for calibrating anesthetic gases according to claim 1, characterized in that, The outer wall of the evaporator calibration cone joint (4) is provided with a flange. The end face of the flange is connected to the second end face of the evaporator calibration tube joint (8). A second O-ring seal (7) is provided between the end face of the flange and the second end face of the evaporator calibration tube joint (8) to seal the connection between the end faces of the evaporator calibration cone joint (4) and the evaporator calibration tube joint (8).

9. The tooling interface for calibrating anesthetic gases according to claim 6, characterized in that, The evaporator calibration valve core (3) has a groove on the outer wall between the second protrusion and the third protrusion, and a second Y-shaped sealing ring (6) is installed in the groove to seal the gap between the outer wall of the evaporator calibration valve core (3) and the inner wall of the evaporator calibration cone joint (4). The bushing (1) has a groove on the outer wall corresponding to the Luer connector female head, and a first Y-type sealing ring (5) is installed in the groove to seal the gap between the outer wall of the Luer connector female head of the bushing (1) and the inner wall of the Luer connector receiving part of the evaporator calibration valve core (3). The evaporator calibration tapered connector (4) has a groove at the corresponding position of the tapered connector female head of the bushing (1), and a second O-ring seal (2) is installed in the groove to seal the gap between the inner wall of the evaporator calibration tapered connector (4) and the outer wall of the tapered connector female head of the bushing (1).

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