CN201668826U - Apparatus for gas flow direction switchover of anesthesia respirator - Google Patents

Abstract

The utility model provides an apparatus for gas flow direction switchover of anesthesia respirator. The apparatus herein comprises a gas inlet, an integrated breathing loop opening and a non-circulating breathing loop opening which are communicating with each other within a housing, a switchover handle with a cam apparatus and a elongated rod, a switchover valve core, and an elastic member. The apparatus herein permits the switchover of fresh gas flow direction between the integrated breathing loop and the non-circulating breathing loop. By employing the switchover handle with the cam apparatus, and a cam limit slot, and the elastic member, the apparatus secures self-resilience capability, thus guaranteeing sealing of breathing loop of the fresh gas flow direction in the apparatus herein.

Description

One anesthesia respirator gas flow switching device shifter

Technical field

This utility model relates to an anesthesia respirator, relates in particular to an anesthesia respirator gas flow switching device shifter.

Background technology

Present anesthetic gas machine hose connectionly offers integrated breathing circuit or non-repeatability breathing circuit with live gas by fresh, between integrated breathing circuit and non-repeatability breathing circuit, change if desired, need then that live gas is hose connection to be realized by replacing.This kind changing method complicated operation, the time of finishing once switching is also longer relatively.And, in existing gas flow switching controls field, often rely on the moving up and down of spool of rotation promotion of screw thread to realize handoff functionality, the position of very possible spool is not in the design application state fully, secondly, the switching that relies on the screw thread rotation realization is often owing to artificial governing factor causes pressure excessive or too small, and the excessive spool that then may cause damages, too small then possibility sealing deficiency.

The utility model content

The purpose of this utility model, exactly in order to solve the above-mentioned technical problem that prior art exists, make when between integrated breathing circuit and non-repeatability breathing circuit, switching live gas, only need pull the switching handle can finish, and the connection that does not need to replace the live gas pipe, and guarantee the air-tightness of gas return path system.

In order to address the above problem, anesthesia respirator gas flow switching device shifter of the present utility model comprises: a gas feed, an integrated breathing circuit mouth, an acyclic breathing circuit mouth and a housing.Described gas feed, described integrated breathing circuit mouth and described acyclic breathing circuit mouth are interconnected in described housing.

Described gas flow switching device shifter also comprises: one has the switching handle of cam gear, an elongate bars, and one switches spool and elastic component.Described housing have can with described cam gear at the first spacing position and the cam stopper slot that matches in the second spacing position.Described switching handle is articulated in an end of described elongate bars; The other end of described elongate bars is fixedlyed connected with described switching spool.Described elongate bars has the elastic component spacing preiection, is equipped with described elastic component between described elastic component spacing preiection and described housing.

Described switching spool is configured to: when described switching handle was positioned at the described first spacing position, described integrated breathing circuit mouth was by the shutoff of described switching spool; When described switching handle was positioned at the second spacing position, described acyclic breathing circuit mouth was by the shutoff of described switching spool.

By described cam gear, described cam stopper slot and described elastic component, described switching handle are configured to resilience automatically and are limited in the described first spacing position or the described second spacing position.

Preferably, the described first spacing position and the described second spacing position are horizontal level.

Preferably, described anesthetic machine gas flow switching device shifter further comprises a safety relief valve.By described safety relief valve, the pressure in the loop can be controlled to be 75 ± 2mbar.

By technique scheme, the advantage of anesthesia respirator gas flow switching device shifter of the present utility model and have a mind to effect and be: by manual two to guaranteeing that certainly unidirectional complete closed control structure realizes that the flow direction of anesthesia respirator live gas between integrated breathing circuit and non-repeatability breathing circuit switch, and does convenient, fast than replacing live gas flexible pipe mistake.By the inner elastomeric part, guaranteed that live gas flows to the seal of selected breathing circuit.Switch handle in use owing to have, avoided the human operational error effectively and make spool be in the probability of non-design application state from resilience.

Description of drawings

Accompanying drawing shows embodiment of the present utility model, and with description, is used for explaining principle of the present utility model.By the detailed description of doing below in conjunction with accompanying drawing, can more be expressly understood the purpose of this utility model, advantage and feature, wherein, identical feature is used identical label.

Fig. 1 is the front perspective view of anesthetic machine gas flow switching device shifter of the present utility model.

Fig. 2 is the three-dimensional view of switching handle of the present utility model.

Fig. 3 is the three-dimensional view of anesthetic machine gas flow switching device shifter of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is described in detail.

As shown in Figure 1, anesthesia respirator gas flow switching device shifter of the present utility model comprises: a gas feed 1, one integrated breathing circuit mouth 2, one acyclic breathing circuit mouths 3 and a housing 4.Described gas feed 1, described integrated breathing circuit mouth 2 and described acyclic breathing circuit mouth 3 are interconnected in described housing 4.

As illustrated in fig. 1 and 2, described gas flow switching device shifter also comprises: switching handle 5, one elongate bars 7, with cam gear 51 are switched spool 8 and spring 9.

As shown in figs. 1 and 3, described housing have can with described cam gear at spacing position of first level and the cam stopper slot 6 that matches in the spacing position of second level.Described switching handle 5 is articulated in an end of described elongate bars 7; The other end of described elongate bars is fixedlyed connected with described switching spool 8.Described elongate bars 7 has elastic component spacing preiection 71, is equipped with described spring 9 between described elastic component spacing preiection 71 and described housing 4.

Described switching spool 8 is configured to: when described switching handle 5 was positioned at the spacing position of described first level, described integrated breathing circuit mouth 2 was by described switching spool 8 shutoff; When described switching handle 5 was positioned at the spacing position of second level, described acyclic breathing circuit mouth 3 was by described switching spool 8 shutoff.

By described cam gear 51, described cam stopper slot 6 and described spring 9, described switching handle 5 are configured to resilience automatically and are limited in the described first spacing position or the described second spacing position.

Be preferred embodiment of the present utility model only below, be not limited to this utility model.In the above-described embodiments, this utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (3)

1. an anesthesia respirator gas flow switching device shifter, comprise: a gas feed, an integrated breathing circuit mouth, an acyclic breathing circuit mouth and a housing, it is characterized in that: described gas feed, described integrated breathing circuit mouth and described acyclic breathing circuit mouth are interconnected in described housing;

Described gas flow switching device shifter also comprises: one has the switching handle of cam gear, an elongate bars, and one switches spool and elastic component;

Described housing have can with described cam gear at the first spacing position and the cam stopper slot that matches in the second spacing position;

Described switching handle is articulated in an end of described elongate bars, and the other end of described elongate bars is fixedlyed connected with described switching spool, and described elongate bars has the elastic component spacing preiection;

Between described elastic component spacing preiection and described housing, be equipped with described elastic component;

Described switching spool is configured to: when described switching handle was positioned at the described first spacing position, described integrated breathing circuit mouth was by the shutoff of described switching spool; When described switching handle was positioned at the second spacing position, described acyclic breathing circuit mouth was by the shutoff of described switching spool;

By described cam gear, described cam stopper slot and described elastic component, described switching handle are configured to resilience automatically and are limited in the described first spacing position or the described second spacing position.

2. anesthetic machine gas flow switching device shifter according to claim 1 is characterized in that, the described first spacing position and the described second spacing position are horizontal level.

3. anesthetic machine gas flow switching device shifter according to claim 1 is characterized in that, further comprises: a safety relief valve.

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