CN112704794A

CN112704794A - Anesthesia machine return circuit unlocking device

Info

Publication number: CN112704794A
Application number: CN202011636495.9A
Authority: CN
Inventors: 张凯; 李凯
Original assignee: Beijing Aeonmed Co Ltd
Current assignee: Beijing Aeonmed Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-27

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an anesthesia machine loop unlocking device which comprises an unlocking button, a rotating mechanism and a lock block, wherein the unlocking button is connected to a loop handle through a spring, the lock block is connected to a loop and serves as a limiting device, the rotating mechanism is connected with a rack, and 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 lock rod and the left lock rod are respectively provided with a hook, one end of the unlocking rod is connected with one end of the right lock rod, and one end of the long locking rod is connected with the other end of the right lock rod; the other end of the long locking rod is connected with 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 springs. The invention effectively combines the locking mechanism and the unlocking mechanism, on one hand, the simplicity of operation is increased, and one-key operation is realized.

Description

Anesthesia machine return circuit unlocking device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an unlocking device for an anesthesia machine loop.

Background

The circuit is an important part of the anesthesia machine, and the gas circuit of the patient circuit part mainly provides a closed loop for the anesthesia gas, so that the residual gas after the carbon dioxide in the expired gas of the patient is absorbed enters the respiratory loop of the patient again to control the anesthesia depth of the patient. When inhaling, the driving air presses the air in the leather bag into the patientA lung; when the patient exhales, the patient relies on the contraction of the muscles in the chest cavity to expel the air in the lungs into the skin sac again. The soda lime absorption tank in the loop is used for absorbing CO discharged by the patient₂A gas. In practical application, the loop is fixed in different modes according to the integral structure of the anesthesia machine, and is generally directly fixed on the side surface of the rack. In the prior art, the loop is difficult to disassemble and assemble in a mode of fixing the loop to the side face of the rack by using screws, and the loop is inconvenient for the loop needing to be disassembled and assembled frequently for disinfection.

Disclosure of Invention

In order to solve the defects of the problems, the invention provides an anesthesia machine loop unlocking device, which optimizes screws on the side surface of a rack into a set of unlocking device and provides a novel loop dismounting mode, wherein the unlocking device mainly comprises three parts: an unlocking button, a hook and a locking block. When the hook hooks the locking block, the loop is locked to the side surface of the frame; and when the unlocking button is pressed down, the hook is separated from the locking block, the loop is unlocked with the rack, and the loop can be detached from the rack.

The specific technical scheme of the invention is as follows:

the anesthesia machine loop unlocking device comprises an unlocking button, a rotating mechanism and a lock block, wherein the unlocking button is connected to a loop handle through a spring and a screw, the lock block is connected to a loop to serve as a limiting device, the rotating mechanism is connected with a rack, and 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 lock rod and the left lock rod are respectively provided with a hook, one end of the unlocking rod is connected with one end of the right lock rod, and one end of the long locking rod is connected with the other end of the right lock rod; the other end of the long locking rod is connected with 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 springs.

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

Preferably, a split retainer ring is arranged in the groove, and the split retainer ring is sleeved on the left locking rod and the right locking rod.

Preferably, one end of the torsion spring is fixed in the torsion spring fixing hole of the locking seat, and the other end of the torsion spring is pressed below the hook.

Preferably, the rotating structure is connected with the air control connecting plate of the rack.

The invention organically combines a locking mechanism and an unlocking mechanism; the spring and the torsion spring are automatically locked and reset; 2 groups of torsion springs drive 2 groups of hooks to synchronously lock and unlock; the locking block and the hook are designed in a circular arc surface contact mode, and the unlocking button is designed in an embedded mode on the loop handle; the symmetry design of the left unlocking seat and the right unlocking seat improves the flexibility of the operator in the disassembly and assembly operation of the loop, improves the working efficiency of the operator to a certain extent, and enables the loop to better meet the use requirements of the operator.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the locking mechanism and the unlocking mechanism are effectively combined, so that on one hand, the simplicity of operation is increased, one-key operation is realized, and on the other hand, the size of the whole mechanism is reduced; due to the design of the spring and the torsion spring, the mechanism has the effects of automatic locking and automatic resetting, and the operation difficulty is greatly reduced; 2 groups of torsion springs drive 2 groups of hooks to be locked and unlocked synchronously, so that the mechanism is stressed more uniformly and reasonably, and the reliability of the mechanism is improved, if a single group of hooks is used, the circuit can have the phenomenon of locking failure; the locking block is contacted with the arc surface of the hook, so that the locking and unlocking processes are stable and reliable, and the noise is reduced; the unlocking button and the upper surface of the loop handle are positioned on the same plane, have proper diameters and are embedded into the handle groove, so that the space size is reduced, and the appearance of the whole loop is not influenced; the design of the left and right locking seats considers the universality, and the left and right locking seats are designed into symmetrical structures, are the same material, and save the cost of the whole set of mechanism.

Drawings

FIG. 1 is a schematic overall view of the anesthesia machine circuit unlocking apparatus of the present invention;

FIG. 2 is a front view of the anesthesia machine circuit unlocking device of the present invention;

FIG. 3 is a top view of the anesthesia machine circuit unlocking device of the present invention;

FIG. 4 is a groove schematic view of the anesthesia machine circuit unlocking device of the present invention;

FIG. 5 is a schematic view of a torsion spring of the anesthesia machine circuit unlocking device of the present invention;

FIG. 6 is a schematic view of a torsion spring fixing hole of the unlocking device for the loop of the anesthesia machine according to the present invention;

FIG. 7 is a schematic view of an unlock button of the anesthesia machine circuit unlocking device of the present invention;

FIG. 8 is an assembled view of the anesthesia machine circuit delatch device of the present invention;

FIG. 9 is a schematic view of the assembly of the locking block of the unlocking device for the anesthesia machine circuit of the present invention;

FIG. 10 is a schematic view of the pin of the circuit unlocking device of the anesthesia machine of the present invention;

reference numerals:

1. right locking lever, 2, unlocking lever, 3, screw I, 4, unlocking button, 5, spring, 6, locking seat, 7, torsion spring, 8, split washer, 9, locking stock, 10, left locking lever, 11, screw II, 12, locking piece, 13, couple, 14, screw III, 15, round pin axle, 16 recess, 17, handle, 18, torsion spring fixed orifices, 19, accuse gas connecting plate, 20, return circuit.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

The invention provides an anesthesia machine loop unlocking device, which comprises an unlocking button 4, a rotating mechanism and a locking block 12 which form the anesthesia machine loop unlocking device together, as shown in figures 1, 2 and 3. The unlocking button 4 is connected to the loop handle 17 through a spring 5 and a screw I3, and as shown in fig. 7, a self-resetting mechanism is formed; when the unlocking button 4 is pressed downwards, the unlocking button 4 compresses the spring 5, the unlocking rod 2 is propped against by the screw I3 at the end part, the locking force of the torsion spring 7 is counteracted, and the unlocking action is realized; when the hand pressing the unlocking button 4 is released, the unlocking button 4 is pushed upwards by the elastic force of the spring 5 to reset the unlocking button, the screw I3 is separated from the unlocking rod 2, and the torsion of the torsion spring 7 drives the hook 13 on the rotating mechanism to lock the locking block 12. The locking block is connected to the loop to serve as a limiting device, the rotating mechanism is connected with the rack and comprises a hook, an unlocking rod, a right locking rod, a long locking rod, a left locking rod, a locking seat and a torsion spring; the right lock rod and the left lock rod are respectively provided with a hook, one end of the unlocking rod is connected with one end of the right lock rod, and one end of the long locking rod is connected with the other end of the right lock rod; the other end of the long locking rod is connected with 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 springs.

The right lock rod 1 and the left lock rod 10 are both provided with a groove 16, as shown in fig. 4, a split retainer ring 9 is arranged in the groove 16, and the split retainer ring 9 is sleeved in the left lock rod and the right lock rod. When the left and right locking rods are inserted into the locking seat, the axial direction is positioned in a single direction, the split retainer ring 9 is arranged in the groove 16, so that the locking rods can be prevented from moving axially in the locking seat, the axial positions of the locking rods are limited, and the design structure is simple and practical.

As shown in fig. 5, the torsion spring 7 provides torque for the rotation of the unlocking lever 2, one end of the torsion spring 7 is fixed in the torsion spring fixing hole 18 of the locking seat 6 shown in fig. 6, and the other end is pressed under the hook by proper pre-tightening force. Such a design can provide a unidirectional torque to the unlocking lever 2, so that the locking lever and the hook always tend to be locked, and the hook 13 can be disengaged from the lock block unless the unlocking button is pressed to counteract the force. This design facilitates rotation of the locking lever.

In the loop unlocking mechanism, the contact surface of the locking block and the hook is made into a circular arc surface form, so that the locking and unlocking processes are smoother, and the locking is prevented; the matching holes of the unlocking button and the loop handle are made into a circular shape, the unlocking button and the loop handle can rotate relatively through the form in the embodiment, and other non-circular shapes such as a square shape or an oval shape can be used for anti-rotation design; the torsion spring and the spring are made of stainless steel wire materials and can also be made of other elastic materials.

The installation process of the device comprises the following steps:

a) during assembly, the unlocking rod 2 is connected with the right locking rod 1 by a first screw 3, then the right locking rod is inserted into the locking seat, and the unlocking torsion spring 7 is sleeved in the locking seat; the hook is connected with the right lock rod 1 by a screw III 14; the right lock rod 1 is sleeved by a split retainer ring 6. The long locking rod 9 is connected with the right locking rod 1 through a second screw 11; then the left lock rod 10 is inserted into the locking seat 6, and the unlocking torsion spring 7 is sleeved in the left lock rod; the hook is connected with the left lock rod 10 by a screw III 14; the split ring 6 is used to sleeve the left lock rod 10. The long locking rod 9 is connected with the left locking rod by a second screw 11. Finally, the assembled rotating structure is connected with the frame air control connecting plate 19 by a screw four, as shown in fig. 8;

b) when the unlocking button is installed, the unlocking button penetrates through the spring 4 and enters the handle, and the unlocking button is fixed on the loop handle by the first screw 3 to form a self-resetting mechanism, as shown in fig. 7;

c) the lock block 12 is then attached to the circuit as a stop by screw-3, as shown in fig. 9.

d) Finally, lifting the loop with the locking block to enable the pin shaft hole on the loop to be aligned with two pin shafts 15 on the air control connecting plate (as shown in figure 10); after alignment is established, the loop 20 is pushed with some force until the hook locks the lock block 12.

The unlocking device is not limited to be composed of 2 groups of torsion springs and hooks, and can be composed of a plurality of groups of hooks according to the use space in practical use; or according to the principle, the design of the button with other shapes is carried out, wherein the contact surface of the locking block and the hook is not limited to a circular arc surface, and other modes can also be adopted; the spring and the torsion spring can be made of other elastic materials and other shapes, so that the market demand can be better met.

Conventional technical knowledge in the art can be used for the details which are not described in the present invention.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An anesthesia machine loop unlocking device comprises an unlocking button, a rotating mechanism and a locking block, and is characterized in that the unlocking button is connected to a loop handle through a spring and a screw, the locking block is connected to a loop to serve as a limiting device, the rotating mechanism is connected with a rack, and the rotating mechanism comprises a hook, an unlocking rod, a right locking rod, a long locking rod, a left locking rod, a locking seat and a torsion spring; the right lock rod and the left lock rod are respectively provided with a hook, one end of the unlocking rod is connected with one end of the right lock rod, and one end of the long locking rod is connected with the other end of the right lock rod; the other end of the long locking rod is connected with 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 springs.

2. The anesthesia machine circuit unlocking device of claim 1, wherein the right locking bar and the left locking bar are provided with grooves.

3. The anesthesia machine circuit unlocking device of claim 2, wherein a split retaining ring is disposed in the groove and is nested in the left and right locking bars.

4. The anesthesia machine circuit unlocking device of claim 1, wherein one end of the torsion spring is fixed in the torsion spring fixing hole of the locking seat, and the other end of the torsion spring is pressed under the hook.

5. The anesthesia machine circuit unlocking device of claim 1, wherein the rotating structure is connected to a frame gas control connection plate.