Anesthesia machine circuit unlocking device

Abstract

The present invention belongs to the technical field of medical devices, and specifically, relates to an anesthesia machine circuit unlocking device, including an unlocking button, a rotating mechanism and a locking block, wherein the unlocking button is connected to the circuit handle through a spring, the locking block is connected to the circuit as a limiting device, the rotating mechanism is connected to the frame, and the rotating mechanism includes a hook, an unlocking rod, a right locking rod, a locking long rod, a left locking rod, a locking seat and a torsion spring; wherein the right locking rod and the left locking rod are respectively provided with hooks, one end of the unlocking rod is connected to one end of the right locking rod, and one end of the locking long rod is connected to the other end of the right locking rod; the other end of the locking long rod is connected to one end of the left locking rod, the right locking rod and the left locking rod are inserted into the locking seat, and the torsion springs are respectively inserted. The invention effectively combines the locking mechanism with the unlocking mechanism, which increases the simplicity of operation and realizes "one-button" operation.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a circuit unlocking device for an anesthesia machine. Background Art

[0002] The circuit is an important part of the anesthesia machine. The gas circuit of the patient circuit mainly provides a closed loop for the anesthetic gas, so that the carbon dioxide in the patient's exhaled gas is absorbed and the remaining gas re-enters the patient's breathing loop to control the patient's anesthesia depth. When inhaling, the driving gas presses the gas in the sac into the patient's lungs; when exhaling, the patient relies on the contraction of the chest muscles to discharge the lung gas back into the sac. The soda lime absorption tank in the circuit is used to absorb the CO2 gas discharged by the patient. In actual applications, according to the overall structure of the anesthesia machine, there are different ways to fix the circuit, which is generally fixed directly to the side of the frame. In the current technology, the way of fixing the circuit to the side of the frame with screws makes it difficult to disassemble and assemble the circuit, which is not very convenient for the circuit that needs to be frequently disassembled and disinfected. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes an anesthesia machine circuit unlocking device. The present invention optimizes the screws on the side of the frame into a set of unlocking devices, and provides a new circuit disassembly and assembly method. The unlocking device mainly consists of three parts: an unlocking button, a hook, and a locking block. When the hook hooks the locking block, the circuit is locked to the side of the frame; when the unlocking button is pressed, the hook and the locking block are separated, the circuit is unlocked from the frame, and the circuit can be removed from the frame.

[0004] The specific technical solutions of the present invention are as follows:

[0005] The circuit unlocking device of the anesthesia machine comprises an unlocking button, a rotating mechanism and a locking block. The unlocking button is connected to the circuit handle through a spring and a screw. The locking block is connected to the circuit as a limiting device. The rotating mechanism is connected to the frame. The rotating mechanism comprises a hook, an unlocking rod, a right locking rod, a locking long rod, a left locking rod, a locking seat and a torsion spring. The right locking rod and the left locking rod are respectively provided with hooks, one end of the unlocking rod is connected to one end of the right locking rod, and one end of the locking long rod is connected to the other end of the right locking rod; the other end of the locking long rod is connected to one end of the left locking rod, the right locking rod and the left locking rod are inserted into the locking seat, and the torsion springs are respectively inserted.

[0006] Preferably, the right locking rod and the left locking rod are both provided with grooves.

[0007] Preferably, an open retaining ring is arranged in the groove, and the open retaining ring is inserted into the left locking rod and the right locking rod.

[0008] Preferably, one end of the torsion spring is fixed to the torsion spring fixing hole of the locking seat, and the other end is pressed under the hook.

[0009] Preferably, the rotating structure is connected to the frame air control connecting plate.

[0010] The present invention improves the operator's flexibility in disassembling and assembling the circuit through the organic combination of the locking mechanism and the unlocking mechanism; the automatic locking and automatic resetting effects of the spring and the torsion spring; the design that two groups of torsion springs drive two groups of hooks to lock and unlock synchronously; the arc surface contact design of the locking block and the hook and the embedded design of the unlocking button on the circuit handle; and the symmetrical design of the left and right unlocking seats, thereby improving the operator's work efficiency to a certain extent, so that the circuit can better meet the operator's usage requirements.

[0011] The beneficial effects of the present invention compared with the prior art are:

[0012] The present invention effectively combines the locking mechanism and the unlocking mechanism, which on the one hand increases the ease of operation and realizes "one-button" operation, and on the other hand reduces the size of the entire mechanism; the design of the spring and the torsion spring enables the mechanism to have the effects of automatic locking and automatic resetting, greatly reducing the difficulty of operation; the two groups of torsion springs drive the two groups of hooks to lock and unlock synchronously, making the force of the mechanism more uniform and reasonable, and also improving the reliability of the mechanism. If a single group of hooks is used, the loop may not be locked tightly; the arc surface contact between the locking block and the hook makes the locking and unlocking process stable and reliable, while reducing noise; the unlocking button is in the same plane as the upper surface of the loop handle and has an appropriate diameter, and is embedded in the handle groove, which not only reduces the space size, but also does not affect the appearance of the entire loop; the design of the left and right locking seats takes into account versatility and is designed into a symmetrical structure, using the same material, saving the cost of the entire mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of the circuit unlocking device of the anesthesia machine of the present invention;

[0014] Figure 2 It is a front view of the circuit unlocking device of the anesthesia machine of the present invention;

[0015] Figure 3 is a top view of the circuit unlocking device of the anesthesia machine of the present invention;

[0016] Figure 4 It is a schematic diagram of a groove of the circuit unlocking device of the anesthesia machine of the present invention;

[0017] Figure 5 Schematic diagram of a torsion spring of a circuit unlocking device of an anesthesia machine of the present invention;

[0018] Figure 6 Schematic diagram of the torsion spring fixing hole of the circuit unlocking device of the anesthesia machine of the present invention;

[0019] Figure 7 Schematic diagram of the unlocking button of the circuit unlocking device of the anesthesia machine of the present invention;

[0020] Figure 8 It is a schematic diagram of the assembly of the circuit unlocking device of the anesthesia machine of the present invention;

[0021] Fig. 9 It is a schematic diagram of the assembly of the locking block of the circuit unlocking device of the anesthesia machine of the present invention;

[0022] Fig.10 Schematic diagram of the pin of the circuit unlocking device of the anesthesia machine of the present invention;

[0023] Reference numerals:

[0024] 1. Right locking rod, 2. Unlocking rod, 3. Screw one, 4. Unlocking button, 5. Spring, 6. Locking seat, 7. Torsion spring, 8. Open retaining ring, 9. Locking long rod, 10. Left locking rod, 11. Screw two, 12. Locking block, 13. Hook, 14. Screw three, 15. Pin, 16 Groove, 17. Handle, 18. Torsion spring fixing hole, 19. Air control connecting plate, 20. Circuit. DETAILED DESCRIPTION

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] The present invention provides an anesthesia machine circuit unlocking device, such as Figure 1 , Figure 2 and Figure 3 As shown, the unlocking button 4, the rotating mechanism and the locking block 12 together constitute the circuit unlocking device of the anesthesia machine. The unlocking button 4 is connected to the circuit handle 17 through a spring 5 and a screw 3. Figure 7 As shown, a self-reset mechanism is formed; when the unlock button 4 is pressed downward, the unlock button 4 compresses the spring 5, and the screw 3 at the end supports the unlock rod 2, offsetting the locking force of the torsion spring 7, and realizing the unlocking action; when the hand pressing the unlock button 4 is released, the elastic force of the spring 5 pushes the unlock button 4 upward to reset it, the screw 3 is separated from the unlock rod 2, and the torsion force of the torsion spring 7 drives the hook 13 on the rotating mechanism to lock the lock block 12. The lock block is connected to the circuit as a limit device, and the rotating mechanism is connected to the frame. The rotating mechanism includes a hook, an unlock rod, a right locking rod, a locking long rod, a left locking rod, a locking seat and a torsion spring; wherein, the right locking rod and the left locking rod are respectively provided with hooks, one end of the unlock rod is connected to one end of the right locking rod, and one end of the locking long rod is connected to the other end of the right locking rod; the other end of the locking long rod is connected to one end of the left locking rod, and the right locking rod and the left locking rod are inserted into the locking seat and are respectively sleeved into the torsion spring.

[0027] Wherein, the right locking rod 1 and the left locking rod 10 are both provided with a groove 16, such as Figure 4As shown, an open retaining ring 8 is arranged in the groove 16, and the open retaining ring 8 is inserted into the left locking rod and the right locking rod. When the left and right locking rods are inserted into the locking seat, the axial direction is only positioned in one direction. The open retaining ring 8 is installed in the groove 16 to prevent the axial movement of the locking rod in the locking seat, and the axial position of the locking rod is limited. This design structure is simple and practical.

[0028] like Figure 5 As shown, the torsion spring 7 provides torque for the rotation of the unlocking lever 2, and one end of the torsion spring 7 is fixed to Figure 6 The torsion spring fixing hole 18 of the locking seat 6 is shown, and the other end is pressed under the hook by appropriate pre-tightening force. Such a design can provide a unidirectional torque for the unlocking rod 2, so that the locking rod and the hook are always in a locking trend, unless the unlocking button is pressed to offset this part of the force, and the hook 13 can be separated from the locking block. This design is conducive to the rotation of the locking rod.

[0029] In this loop unlocking mechanism, the contact surface between the lock block and the hook is made into an arc surface, which makes the locking and unlocking process smoother and prevents jamming. In actual applications, the contact surface can be made into other shapes and rollers can be added to the hook to further reduce friction; the matching holes between the unlocking button and the loop handle are made into circles, and the two can rotate relative to each other through the form in this example. Other non-circular shapes such as square or elliptical can be used for anti-rotation design; the torsion spring and the spring are made of stainless steel wire, and can also be made of other elastic materials.

[0030] Installation process of the device of the present invention:

[0031] a) During assembly, first connect the unlocking rod 2 to the right locking rod 1 with screw 1 3, then insert the right locking rod into the locking seat, and insert the unlocking torsion spring 7 at the same time; connect the hook to the right locking rod 1 with screw 3 14; insert the right locking rod 1 with the open retaining ring 8. Connect the locking long rod 9 to the right locking rod 1 with screw 2 11; then insert the left locking rod 10 into the locking seat 6, and insert the unlocking torsion spring 7 at the same time; connect the hook to the left locking rod 10 with screw 3 14; insert the left locking rod 10 with the open retaining ring 8. Connect the locking long rod 9 to the left locking rod with screw 2 11. Finally, connect the assembled rotating structure to the frame air control connecting plate 19 with screw 4, as shown in the figure. Figure 8 As shown;

[0032] b) When installing the unlock button, pass the unlock button through the spring 5 into the handle, and then fix the unlock button to the return handle with screws 3 to form a self-reset mechanism. Figure 7 As shown;

[0033] c) Then, the locking block 12 is connected to the circuit with screws 3 as a limit device, such as Fig. 9 shown.

[0034] d) Finally, lift the circuit with the lock block installed, and align the pin holes on the circuit with the two pins 15 on the air control connecting plate (such as Fig.10 ); After confirming the alignment, push the loop 20 with a certain force until the hook locks the locking block 12.

[0035] The unlocking device of the present invention is not limited to being composed of two groups of torsion springs and hooks. In actual use, it can be composed of multiple groups of hooks according to the usage space; or based on this principle, buttons of other shapes can be designed, wherein the contact surface between the locking block and the hook is not limited to an arc surface, but can also be other shapes; the material of the spring and torsion spring can also be other elastic materials and other shapes, so as to better meet market demand.

[0036] Any contents not described in detail in the present invention can be based on the conventional technical knowledge in the art.

[0037] 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 the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention and should be included in the scope of the claims of the present invention.

Claims

1. An anesthesia machine circuit unlocking device, comprising an unlocking button, a rotating mechanism and a locking block, characterized in that: The unlock button is connected to the loop handle through a spring and a screw, the lock block is connected to the loop as a limit device, the rotating mechanism is connected to the frame, and the rotating mechanism includes a hook, an unlock rod, a right locking rod, a locking long rod, a left locking rod, a locking seat and a torsion spring; wherein, the right locking rod and the left locking rod are respectively provided with a hook, one end of the unlock rod is connected to one end of the right locking rod, and one end of the locking long rod is connected to the other end of the right locking rod; the other end of the locking long rod is connected to one end of the left locking rod, and the right locking rod and the left locking rod are inserted into the locking seat and are respectively sleeved with torsion springs; One end of the torsion spring is fixed to the torsion spring fixing hole of the locking seat, and the other end is pressed under the hook; When the unlock button is pressed downward, the unlock button compresses the spring, and the screw at the end presses against the unlock rod, offsetting the locking force of the torsion spring to achieve the unlocking action; when the unlock button is released, the elastic force of the spring pushes the unlock button upward to reset it, and once the screw is separated from the unlock rod, the torsion force of the torsion spring drives the hook on the rotating mechanism to lock the lock block; The right locking rod and the left locking rod are both provided with grooves; The rotating mechanism is connected to the frame air control connecting plate.

2. The anesthesia machine circuit unlocking device according to claim 1, characterized in that: An opening retaining ring is arranged in the groove, and the opening retaining ring is sleeved into the left locking rod and the right locking rod.

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