Oxygen supply non-return laryngoscope blade

Abstract

The invention discloses an oxygen supply non-return laryngoscope blade which comprises a disposable video laryngoscope blade body, a buckle is arranged at the tail end of the disposable video laryngoscope blade body, a tongue depressor is arranged at the front end of the disposable video laryngoscope blade body, a laryngoscope blade inner cavity is formed in the disposable video laryngoscope blade body, and a tongue depressor is arranged in the laryngoscope blade inner cavity. The laryngoscope lens comprises a laryngoscope lens inner cavity, a tail end port of the laryngoscope lens inner cavity is open, a front end port of the laryngoscope lens inner cavity is highly transparent and closed, and the laryngoscope lens is characterized in that an opening communicated with the laryngoscope lens inner cavity is formed in the front end face of the laryngoscope lens inner cavity, and a back pressure type flexible check valve is arranged on the opening.

Description

Technical field:

[0001] The invention relates to a medical device, in particular to an oxygen supply and anti-reverse laryngoscope blade. Background technology:

[0002] The anesthesia pharyngoscope is the preferred medical device for endotracheal intubation and glottis exposure during general anesthesia induction and cardiopulmonary resuscitation. The blades of the anesthesia pharyngoscope are mostly reused, but are gradually being replaced by disposable blades.

[0003] The prior patent application 201510753521.9 discloses a disposable ventilation laryngoscope blade, in which the oxygen injection hole of the laryngoscope blade does not disclose the technical structure of the oxygen supply check valve. Oral secretions can easily flow back through the oxygen injection hole to contaminate the oxygen supply line on the laryngoscope handle. The contaminated oxygen supply line is not easy to clean and disinfect. During repeated use, the oxygen supply line is prone to pathogens entering the body with the oxygen flow due to incomplete disinfection, causing cross infection. Summary of the invention:

[0004] The purpose of the present invention is to make up for the shortcomings of the above-mentioned technical defects and to provide an oxygen supply and anti-reverse laryngoscope blade.

[0005] The present invention is implemented by the following technical scheme: an oxygen supply non-return laryngoscope blade, which includes a disposable video laryngoscope blade body, a buckle is provided at the rear end of the disposable video laryngoscope blade body, a tongue depressor is provided at the front end of the disposable video laryngoscope blade body, a laryngoscope blade inner cavity is provided inside the disposable video laryngoscope blade body, the rear end port of the laryngoscope blade inner cavity is open, the front end port of the laryngoscope blade inner cavity is highly transparent and closed, an opening connected to the laryngoscope blade inner cavity is provided on the front end face of the laryngoscope blade inner cavity, and a back-pressure flexible non-return valve is provided on the opening.

[0006] Preferably, it also includes a guiding and cleaning device, which includes a guiding tube, a pressing rod, a transmission rod, and a cleaning rod. A guiding protrusion is provided on the outer wall of the disposable video laryngoscope blade body, and the length direction of the guiding protrusion is parallel to the end face of the front end of the inner cavity of the laryngoscope blade; a sleeve seat is fixedly provided on the outer wall of the rear end of the disposable video laryngoscope blade body above the guiding protrusion, and the guiding tube is split and fixed in the sleeve seat; the axial direction of the guiding tube is parallel to the front end face of the inner cavity of the laryngoscope blade, and one end of the pressing rod and one end of the transmission rod are slidably inserted in the guiding tube; in the guiding A pressing head is provided at the top of the pressing rod facing the outside of the tube; the end of the transmission rod outside the guide tube is split and plugged and fixed on the dirt removing rod; a guide groove corresponding to the guide protrusion is provided on the dirt removing rod, and the guide groove is slidably engaged with the guide protrusion, and the dirt removing rod is moved back and forth along the axial direction of the guide tube on the outer wall of the disposable video laryngoscope blade body through the guide groove slidably engaged with the guide protrusion; the front end of the dirt removing rod is bent and formed to be provided with a dirt removing scraper rod, and the dirt removing scraper rod is provided with a flexible sleeve or a flexible scraper strip that fits tightly with the end face of the front end of the inner cavity of the laryngoscope blade.

[0007] Preferably: the guide tube is a concentric reducer, the inner cavity of the guide tube is divided into a pressing rod cavity and a transmission rod cavity, the diameter of the pressing rod cavity is larger than the diameter of the transmission rod cavity, the pressing rod is axially reciprocatingly slidable along the guide tube and is placed in the pressing rod cavity, the transmission rod is axially reciprocatingly slidable along the guide tube and is placed in the transmission rod cavity, one end of the transmission rod is separately plugged and fixed with one end of the pressing rod in the pressing rod cavity, and a return spring is sleeved on the transmission rod in the pressing rod cavity.

[0008] Preferably, the cross section of the flexible sleeve is in the shape of a teardrop, and the tip of the flexible sleeve with the teardrop-shaped cross section fits tightly with the end surface of the front end of the inner cavity of the laryngoscope blade.

[0009] The advantages of the present invention are as follows: compared with the prior art, a back-pressure flexible check valve is provided on the end face of the closed end of the inner cavity of the laryngoscope blade; when the oxygen flow passes through the air inlet of the oxygen supply duckbill check valve, the back-pressure flexible check valve opens to transport oxygen into the body; when the oxygen transport is stopped, the back-pressure flexible check valve closes to prevent reverse flow, thereby preventing oral secretions from flowing back from the oxygen supply port to pollute the inner cavity of the laryngoscope blade and avoiding the backflow of oral secretions to pollute the oxygen supply pipeline on the laryngoscope handle. Description of the drawings:

[0010] Figure 1 This is an overall schematic diagram of Example 1.

[0011] Figure 2 This is a schematic diagram of the use of Example 1.

[0012] Figure 3This is an overall schematic diagram of Example 2.

[0013] Figure 4 Schematic diagram of the use of Example 2

[0014] Figure 5 This is a partial structural cross-sectional view of Example 2.

[0015] Figure 6 This is a cross-sectional view of the guide tube of Example 2.

[0016] Figure 7 This is a cross-sectional view of the pressing rod cavity of Example 2.

[0017] Figure 8 for Figure 3 Oblique view of .

[0018] Fig. 9 This is a cross-sectional view of the decontamination scraper rod of Example 2. Specific implementation method:

[0019] Example 1: Figure 1 and Figure 2 As shown, an oxygen supply check laryngoscope blade comprises a disposable video laryngoscope blade body 1, a buckle 2 is provided at the rear end of the disposable video laryngoscope blade body 1, a tongue depressor 3 is provided at the front end of the disposable video laryngoscope blade body 1, a laryngoscope blade inner cavity is provided inside the disposable video laryngoscope blade body 1, the rear end port of the laryngoscope blade inner cavity is open, and the front end port of the laryngoscope blade inner cavity is highly transparent and closed for camera to collect images and light source to pass through, an opening 11 connected to the laryngoscope blade inner cavity is provided on the front end face of the laryngoscope blade inner cavity, and a back-pressure flexible check valve 4 is provided on the opening 11.

[0020] When in use, the disposable video laryngoscope blade main body 1 is movably plugged into the extension arm of the laryngoscope handle, and the disposable video laryngoscope blade main body 1 is fixed to the laryngoscope handle by the buckle 2, and the oxygen outlet on the extension arm of the laryngoscope handle corresponds to the air inlet of the back pressure type flexible check valve 4, so that the oxygen outlet on the extension arm of the laryngoscope handle is connected with the air inlet of the back pressure type flexible check valve 4; during use, when the oxygen flow coming out of the oxygen outlet on the extension arm of the laryngoscope handle passes through the air inlet of the back pressure type flexible check valve 4, the straight-line closed opening at the front end of the back pressure type flexible check valve 4 opens to transport oxygen into the body, and when the oxygen supply stops, the back pressure type flexible check valve 4 closes to prevent oral secretions from flowing back from the oxygen supply port and contaminating the laryngoscope handle extension arm in the inner cavity of the laryngoscope blade.

[0021] Example 2: Figures 3 to 5As shown, an oxygen supply anti-return laryngoscope blade comprises a disposable video laryngoscope blade body 1 and a guide and dirt removal device 5, wherein the guide and dirt removal device 5 comprises a guide tube 51, a pressing rod 52, a transmission rod 53, and a dirt removal rod 54, a buckle 2 is provided at the tail end of the disposable video laryngoscope blade body 1, a tongue depressor 3 is provided at the front end of the disposable video laryngoscope blade body 1, a laryngoscope blade inner cavity is provided inside the disposable video laryngoscope blade body 1, the tail end port of the laryngoscope blade inner cavity is open, the front end port of the laryngoscope blade inner cavity is highly transparent and closed, and is used for a camera to collect images and light source to pass through, and a port corresponding to the laryngoscope blade inner cavity is provided on the front end face of the laryngoscope blade inner cavity An opening 11 connected to the inner cavity of the blade, and a back-pressure flexible check valve 4 is provided on the opening 11; a guide protrusion 12 is provided on the outer wall of the disposable video laryngoscope blade body 1, and the length direction of the guide protrusion 12 is parallel to the end face of the front end of the inner cavity of the blade; a sleeve seat 13 is fixedly provided on the outer wall of the rear end of the disposable video laryngoscope blade body 1 above the guide protrusion 12, and the guide tube 51 is split and plugged and fixed in the sleeve seat 13; the axial direction of the guide tube 51 is parallel to the front end face of the inner cavity of the blade, and one end of the pressing rod 52 and one end of the transmission rod 53 are slidably plugged in the guide tube 51; Figure 6 As shown, the guide tube 51 is a concentric reducer, and the inner cavity of the guide tube 51 is divided into a pressing rod cavity 511 and a transmission rod cavity 512. The diameter of the pressing rod cavity 511 is larger than the diameter of the transmission rod cavity 512. The pressing rod 52 is axially reciprocatingly slidable along the guide tube 51 and is placed in the pressing rod cavity 511. The transmission rod 53 is axially reciprocatingly slidable along the guide tube 51 and is placed in the transmission rod cavity 512. Figure 7 As shown, a guide key 513 is provided on the inner wall of the transmission rod cavity 512 along the axial direction of the guide tube 51, and a matching guide groove 531 corresponding to the guide key 513 is opened on the outer wall of the transmission rod 53; the transmission rod 53 will not rotate when it slides back and forth in the guide tube 51 along the axial direction of the guide tube 51 through the guide groove 531 corresponding to the guide key 513; one end of the transmission rod 53 is separately plugged and fixed with one end of the pressing rod 52 in the pressing rod cavity 511, and a return spring 55 is sleeved on the transmission rod 53 in the pressing rod cavity 511; a pressing head 56 is provided on the top end of the pressing rod 52 outside the guide tube 51; the end of the transmission rod 53 outside the guide tube 51 is separately plugged and fixed on the decontamination rod 54; as shown Figure 8As shown, a guide groove 57 corresponding to the guide protrusion 12 is provided on the dirt removing rod 54, and the guide groove 57 is slidably engaged with the guide protrusion 12. The dirt removing rod 54 is moved back and forth along the axial direction of the guide tube 51 on the outer wall of the disposable video laryngoscope blade body 1 by slidingly engaging the guide groove 57 on the guide protrusion 12. The guide protrusion 12 and the guide groove 57 are slidably engaged, and the guide sliding length of the reciprocating movement of the dirt removing rod 54 is extended, so that the dirt removing rod 54 will not move forward and swing left and right along the disposable video laryngoscope blade body 1 during the reciprocating movement, so that the positioning of the dirt removing rod 54 during the reciprocating movement is stable and accurate; the front end of the dirt removing rod 54 is bent and formed to be provided with a dirt removing scraper rod 58, and the dirt removing scraper rod 58 is provided with a flexible sleeve 6 that fits tightly with the end surface of the front end of the inner cavity of the laryngoscope blade, as shown Fig. 9 As shown, the cross section of the flexible sleeve 6 is in the shape of a water drop, and the tip of the flexible sleeve 6 in the shape of a water drop fits tightly with the end surface of the front end of the inner cavity of the laryngoscope blade.

[0022] When in use, the disposable video laryngoscope blade main body 1 is movably plugged into the extension arm of the laryngoscope handle, and the disposable video laryngoscope blade main body 1 is fixed to the laryngoscope handle by the buckle 2, and the oxygen outlet on the extension arm of the laryngoscope handle corresponds to the air inlet of the back pressure type flexible check valve 4, so that the oxygen outlet on the extension arm of the laryngoscope handle is connected with the air inlet of the back pressure type flexible check valve 4; during use, when the oxygen flow coming out of the oxygen outlet on the extension arm of the laryngoscope handle passes through the air inlet of the back pressure type flexible check valve 4, the straight-line closed opening at the front end of the back pressure type flexible check valve 4 opens to transport oxygen into the body, and when the oxygen supply stops, the back pressure type flexible check valve 4 closes to prevent oral secretions from flowing back from the oxygen supply port and contaminating the laryngoscope handle extension arm in the inner cavity of the laryngoscope blade. When secretions adhere to the high transparent closed end of the laryngoscope blade, the operator can press the pressing head 56, and the pressing rod 52, the transmission rod 53, and the dirt removal rod 54 are linked, and the tip of the flexible sleeve 6 on the dirt removal scraper rod 58 scrapes the secretions on the end face of the high transparent closed end of the laryngoscope blade, so that the camera can collect airway images in real time; through the guiding effect of the guide tube 51, the dirt removal scraper rod 58 on the dirt removal rod 54 keeps parallel to the end face of the high transparent closed end of the laryngoscope blade and moves up and down, so that the tip of the flexible sleeve 6 and the end face of the high transparent closed end of the laryngoscope blade are closely fitted to remove dirt. Press the dirt removal rod 54 with the thumb to move up and down, and the thumb can move freely, the operation is flexible and labor-saving, and does not affect the stability of the handheld laryngoscope. The guide protrusion 12 and the corresponding guide groove 57 make the dirt removal rod 54 move back and forth, and the tip of the flexible sleeve 6 is close to the end face of the high transparent closed end of the laryngoscope blade.

Claims

1. An oxygen supply anti-return laryngoscope blade, comprising a disposable video laryngoscope blade body, a buckle is provided at the rear end of the disposable video laryngoscope blade body, a tongue depressor is provided at the front end of the disposable video laryngoscope blade body, a laryngoscope blade inner cavity is provided inside the disposable video laryngoscope blade body, the rear end port of the laryngoscope blade inner cavity is open, and the front end port of the laryngoscope blade inner cavity is highly transparent and closed, characterized in that: An opening communicating with the laryngoscope blade inner cavity is provided on the front end surface of the laryngoscope blade inner cavity, and a back-pressure type flexible check valve is provided on the opening.

2. The oxygen supply anti-return laryngoscope blade according to claim 1, characterized in that: It also includes a guide and dirt removal device, which includes a guide tube, a pressing rod, a transmission rod, and a dirt removal rod. A guide protrusion is provided on the outer wall of the disposable video laryngoscope blade body, and the length direction of the guide protrusion is parallel to the end face of the front end of the laryngoscope blade inner cavity; a sleeve seat is fixedly provided on the outer wall of the rear end of the disposable video laryngoscope blade body above the guide protrusion, and the guide tube is split and fixed in the sleeve seat; the axial direction of the guide tube is parallel to the front end face of the laryngoscope blade inner cavity, and one end of the pressing rod and one end of the transmission rod are slidably inserted in the guide tube; in the guide tube A pressing head is provided at the top of the outer pressing rod; the transmission rod end on the outer side of the guide tube is split and plugged and fixed on the dirt removing rod; a guide groove corresponding to the guide protrusion is provided on the dirt removing rod, and the guide groove is slidably engaged with the guide protrusion, and the dirt removing rod is moved back and forth along the axial direction of the guide tube on the outer wall of the disposable video laryngoscope blade body through the guide groove slidably engaged with the guide protrusion; the front end of the dirt removing rod is bent and formed to be provided with a dirt removing scraper rod, and the dirt removing scraper rod is provided with a flexible sleeve or a flexible scraper strip that fits tightly with the end face of the front end of the inner cavity of the laryngoscope blade.

3. The oxygen supply anti-return laryngoscope blade according to claim 1, characterized in that: The guide tube is a concentric reducer, and the inner cavity of the guide tube is divided into a pressing rod cavity and a transmission rod cavity. The diameter of the pressing rod cavity is larger than the diameter of the transmission rod cavity. The pressing rod is arranged in the pressing rod cavity and slides back and forth along the axial direction of the guide tube. The transmission rod is arranged in the transmission rod cavity and slides back and forth along the axial direction of the guide tube. One end of the transmission rod is separately plugged and fixed with one end of the pressing rod in the pressing rod cavity, and a return spring is sleeved on the transmission rod in the pressing rod cavity.

4. The oxygen supply anti-return laryngoscope blade according to claim 1, characterized in that: The cross section of the flexible sleeve is in the shape of a water drop, and the tip of the flexible sleeve with the water drop cross section is tightly fitted with the end surface of the front end of the inner cavity of the laryngoscope blade.

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