CN111514419B

CN111514419B - Far-end subassembly and have its laryngeal mask main part, laryngeal mask are held to video

Info

Publication number: CN111514419B
Application number: CN201910106487.4A
Authority: CN
Inventors: 李大庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2023-08-04
Anticipated expiration: 2039-02-02
Also published as: CN111514419A

Abstract

The embodiment of the application provides a far-end holding assembly of video and laryngeal mask main part, laryngeal mask that has it, far-end holding assembly of video includes first hose and window spare, first hose is used for holding the far-end of the visual pipe of laryngeal mask, the inner wall of first ripple section is smooth structure, first hose includes first ripple section and follows the length direction of first ripple section is along the first rib that stretches, the thickness of first rib is greater than the thickness that the trough department of first ripple section corresponds; the window piece is made of light-transmitting materials, and the distal end of the first hose is closed by the window piece. Because the thickness of trough is comparatively thinner, can make first hose have fine pliability, can follow the synchronous crooked and reset of visual tube, the structural strength of first hose has also been increased simultaneously to the thickness design of first rib and crest.

Description

Far-end subassembly and have its laryngeal mask main part, laryngeal mask are held to video

Technical Field

The invention relates to the technical field of medical equipment, in particular to a far-end holding component for a video and a laryngeal mask body and a laryngeal mask with the far-end holding component.

Background

The laryngeal mask is used as a supraglottic ventilation device, belongs to an artificial respiratory tract, and is widely applied to clinic due to the advantages of simple operation, high success rate, small damage and the like since the laryngeal mask was invented in 1983. The laryngeal mask is an artificial airway device interposed between the mask and the tracheal cannula that allows the patient to breathe spontaneously or to perform positive airway pressure.

The laryngeal mask without the visualization function is generally inserted into the patient in a blind way, and operators can only insert the laryngeal mask in a blind way according to hand feeling and experience because details of the laryngeal part cannot be peeped during operation. Blind insertion is likely to result in inaccurate laryngeal mask placement and inaccurate placement may lead to a subsequent series of problems, such as inability to effectively isolate the airway and the digestive tract, incomplete laryngeal mask sealing, air leakage, patient flatulence, regurgitation, and even aspiration; inaccuracy in position also increases the likelihood of laryngeal mask movement during surgery. In addition, blind insertion increases the chance of selecting an improper laryngeal mask. When one or more of the problems described above occur, the operator has to readjust the laryngeal mask angle or repeatedly insert the mask a number of times, which may extend the operating time and delay the rescue of critical patients. And the oral mucus of the patient is possibly increased by multiple trial insertion, so that the operation difficulty is increased. Furthermore, repeated operation is easy to cause the damage and bleeding of the pharyngeal cavity of the patient, the cardiovascular reaction is large, the operation risk is increased, and the like.

In order to ensure the accuracy of the laryngeal mask placement position, operators often check by various indirect means, such as observation of chest relief, lung compliance, auscultation for leakage sounds, observation of neck bulge, monitoring of PetCO2 (end-tidal carbon dioxide partial pressure), opening observation, etc., but in actual practice, various indirect checking means play an important role, but because of inherent limitations of the indirect means themselves, there is a risk of erroneous judgment, and thus, if necessary, direct use of visual soft microscopy is required. There are problems associated with the direct use of a soft visual mirror. Firstly, the visible soft lens is a reusable instrument and directly contacts with internal tissues of a patient, so that strict sterilization is needed, a certain time is needed for the strict sterilization, the operation flow of sterilization is relatively more, the sterilization cost is relatively increased, the requirement on the soaking prevention performance of the visible tube is also high, and medical staff has to prepare a standby instrument during the sterilization, so that the use cost is objectively increased, and even if the use cost is also at a certain cross infection risk; second, the cost of the soft-vision mirror is relatively high, and is not a freely available backup instrument, such as may be lacking in some emergency airway procedures or in some basic medical institutions; again, the soft visual scope is mainly applied to inspection after laryngeal mask insertion or to guiding an endotracheal tube through the laryngeal mask into the glottis, rather than achieving full visualization during laryngeal mask insertion, and therefore it is difficult to effectively reduce repeated insertion of the laryngeal mask.

In view of this, it is necessary to perform the visual function of the laryngeal mask itself, and a range of video laryngeal mask designs have emerged.

In the patent with publication number CN205814822U and name of visual cannula laryngeal mask, the image sensor is arranged in the laryngeal mask trachea, the cable and the like are arranged along the laryngeal mask trachea inner wall, the outlet of the image sensor is flush with the outlet of the distal end of the trachea, and the proximal end of the cable is provided with a port which can be connected with a display screen and a power supply. The design ensures that the image sensor can only be fixedly buried in the laryngeal mask in advance, so that the image sensor, the cable and other parts are difficult to take out and reuse for other laryngeal masks, and the laryngeal mask has higher application cost; also, when the patient's epiglottis sags, the epiglottis may obscure the image sensor, resulting in a complete glottal image being unavailable or completely unavailable.

Disclosure of Invention

In view of the above problems, the applicant has devised, through numerous experiments, a laryngeal mask (not disclosed) in which the distal end of the tube is capable of being bent without direct contact with the internal tissues of the patient, the distal end of the tube is closed by a flexible tube structure, the flexible tube structure is driven to follow the bending when the distal end of the tube is bent, a better view can be obtained by moderate bending of the distal end of the tube, and the epiglottis can be bypassed or the epiglottis can be opened. However, the design scheme puts a severe manufacturing requirement on the structural strength and thickness of the hose structure, and not only needs to have better structural strength to meet the quality reliability, but also needs to have thinner thickness to have good bending performance.

In view of the foregoing, it is desirable to provide a visual distal end containment assembly that combines structural strength and bending properties, and laryngeal mask bodies and laryngeal masks having the same.

To achieve the above object, a first embodiment of the present application provides a far-end visual accommodation assembly for a laryngeal mask including a first hose and a window member; the first hose is used for accommodating the far end of the video tube of the laryngeal mask and comprises a first corrugated section and first ribs extending along the length direction of the first corrugated section, the inner wall of the first corrugated section is of a smooth structure, and the thickness of the first ribs is larger than the thickness corresponding to the trough of the first corrugated section; the window piece is made of light-transmitting materials, and the distal end of the first hose is closed by the window piece.

Further, the thickness of the first rib is greater than or equal to the thickness corresponding to the crest of the first corrugated section.

Further, the first hose further comprises a first connecting section integrally formed with the first corrugated section, the first connecting section is connected to the proximal end of the first corrugated section, the proximal end of the first rib extends to the first connecting section, and the thickness of the first connecting section is larger than the thickness corresponding to the trough of the first corrugated section; and/or the first hose comprises a second connecting section integrally formed with the first corrugated section, and the second connecting section is connected to the distal end of the first corrugated section; the distal ends of the first ribs extend to the second connecting section, and the thickness of the second connecting section is greater than the thickness corresponding to the trough of the first corrugated section.

Further, the thickness corresponding to the crest of the first corrugated section is the same as the thickness of the first rib, and the thickness of the first rib is the same as the thickness of the first connecting section and/or the thickness of the second connecting section.

Further, the window piece and the first hose are of an integrated structure; or the window piece and the first hose are of a split structure, and the window piece is covered on the outer side of the distal end of the first hose in a sealing way.

Further, the first rib is located in the plane of the neutral layer of the first hose.

Further, the window piece is made of polycarbonate or polymethyl methacrylate; and/or, the material of the first hose is polyvinyl chloride.

Further, the far-end visual accommodating assembly further comprises a second hose for accommodating the far end of the light guide of the laryngeal mask, the first hose and the second hose are arranged side by side, and the inner space of the far end of the first hose and the inner space of the far end of the second hose are isolated from each other; the second hose comprises a second corrugated section and second ribs extending along the length direction of the second corrugated section, the inner wall of the second corrugated section is of a smooth structure, and the thickness of the second ribs is larger than that of the corresponding trough of the second corrugated section.

Further, the thickness of the second rib is greater than or equal to the thickness corresponding to the crest of the second corrugated section.

Further, the neutral layer of the first hose and the neutral layer of the second hose are located in the same neutral layer, and the first rib and the second rib are located in the neutral layer.

Further, the second hose comprises a third connecting section integrally formed with the second corrugated section, the third connecting section is connected to the proximal end of the second corrugated section, the proximal end of the second rib extends to the third connecting section, and the thickness of the third connecting section is larger than the thickness corresponding to the trough of the second corrugated section; and/or, the second hose comprises a fourth connecting section integrally formed with the second corrugated section, the fourth connecting section is connected to the distal end of the second corrugated section, the distal end of the second rib extends to the fourth connecting section, and the thickness of the fourth connecting section is greater than the thickness corresponding to the trough of the second corrugated section.

Further, the window piece comprises a cover body, a first sleeving part and a second sleeving part, the first sleeving part extends from the edge of the cover body towards the direction of the first hose, the distal end of the first hose is in butt joint with the inner side of the cover body, the first sleeving part is sleeved on the outer surface of the first hose, and the second sleeving part is sleeved on the outer surface of the second hose.

Further, both ends of the second socket portion are formed in an open structure, and a distal end portion of the second hose protrudes from a distal end portion of the second socket portion.

Further, a distance between a distal end of the second hose and an outer side surface of the cover is less than a predetermined length along a length direction of the second hose.

A second embodiment of the present application provides a laryngeal mask body comprising a conduit, a seal housing connected to the distal end of the conduit, and a visual distal end receiving assembly of any of the above, the conduit being formed with a visual lumen for receiving the visual tube; the viewing channel extends to the distal end of the catheter, at least a portion of the structure of the first hose is located within the seal housing, and the proximal end of the first hose is in communication with the viewing channel.

A third embodiment of the present application provides a laryngeal mask body comprising a conduit, a light guide, a sealing seat connected to the distal end of the conduit, and a visual distal end receiving assembly of any of the above, the conduit being formed with a light guide channel for receiving the light guide and a visual channel for receiving the visual tube; the light guide lumen and the viewing lumen extend to the distal end of the catheter; the near end of the first hose is communicated with the video cavity, the near end of the second hose is communicated with the light guide cavity, at least part of the structure of the first hose and at least part of the structure of the second hose are located in the sealing seat, the light guide piece is preset in the light guide cavity, and the far end of the light guide piece is located in the second hose.

The fourth embodiment of the application provides a laryngeal mask, including visual device and the laryngeal mask main part of above-mentioned arbitrary one, visual device include display, control portion and with the visual pipe that the display is connected, the visual pipe can plug ground and insert in the visual chamber way, the distal end of visual pipe is located in the first hose, the distal end of visual pipe can drive under the drive of control portion the first hose is crooked and resets, first ripple section is located the bend of first hose.

According to the video far-end accommodating assembly, through the design of the first ribs and the wave crests, the wave troughs can be made to be thinner and higher in quality reliability. Because the thickness of trough is comparatively thinner, can make first hose have fine pliability, can follow the synchronous bending of visual tube and reset. The thickness design of first rib and crest has also increased the structural strength of first hose simultaneously for first hose can not warp and then block up the ventilation channel of laryngeal mask under positive negative pressure alternating effect.

Drawings

FIG. 1 is a schematic view of a visual far-end housing assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of the visual far-end holding assembly of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the visual far-end holding assembly of FIG. 2 from another perspective;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is a schematic view of a window according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of another view of the window assembly of FIG. 5;

FIG. 7 is a schematic view of the laryngeal mask body of an embodiment of the present application;

FIG. 8 is a schematic view of a portion of the laryngeal mask body shown in FIG. 7;

FIG. 9 is a schematic view of the laryngeal mask in accordance with an embodiment of the present application;

FIG. 10 is a schematic view of a portion of the distal end of the laryngeal mask shown in FIG. 9;

FIG. 11 is a schematic view of the distal end of the view tube of FIG. 10 in a bent state; and

fig. 12 is a schematic view illustrating the mating of the distal visual end receiving member with the light guide and the visual tube shown in fig. 4.

Description of the reference numerals

A display 21; a viewing tube 22; a control unit 23; a laryngeal mask body 3; a video distal receiving assembly 30; a first hose 31; a first chamber 31a; a first corrugated section 310; the first ribs 311; a first connection section 312; a second connection section 313; a window member 32; a cover 320; a first socket 321; a second socket 322; a second hose 33; a second chamber 33a; a second corrugated section 330; a second rib 331; a third connecting section 332; a fourth connecting section 333; a seal seat 37; an air bag 37"; an airbag seat 37'; a conduit 38; light guide 39

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and technical features in the embodiments may be combined with each other, and the detailed description in the specific embodiments should be construed as an explanation of the gist of the present invention and should not be construed as unduly limiting the present invention.

By smooth structure is meant that the inner wall has no step structure, irrespective of the roughness of the inner wall, i.e. the inner wall may be relatively rough, e.g. a frosted structure, or may be relatively smooth.

A distal viewing end receiving assembly 30 is provided for receiving the distal end of the viewing tube 22 of the laryngeal mask in accordance with an embodiment of the present application.

Referring to fig. 9, the laryngeal mask according to another embodiment of the present invention includes a laryngeal mask body 3 (refer to fig. 7) and a vision device according to any one of the embodiments of the present invention, wherein the vision device includes a display 21, a control portion 23 and a vision tube 22 (refer to fig. 10-12) connected to the display 21, and an image sensor (not shown) is disposed at a distal end of the vision tube 22 to feed back collected image information to the display 21 for displaying, so that an operator can conveniently peep and view details of a throat portion of a patient, that is, the vision tube 22 can be repeatedly used, and further, the distal end of the vision tube 22 can be bent and reset under the control of the control portion 23, so that a field of view of the distal end of the vision tube 22 can be adjusted according to actual use needs.

The laryngeal mask body 3 of the embodiments of the present application includes a conduit 38, a visual distal receiving assembly 30, and a sealing seat 37 at the distal end of the conduit 38, the sealing seat 37 being adapted to seal the patient's esophageal entrance when the laryngeal mask is placed in the patient's pharyngeal cavity to prevent gases from entering the patient's stomach. It will be appreciated that the seal 37 may be of unitary construction, such as a soft construction using silicone molding; the sealing seat 37 may also be in the form of an airbag seat 37' and an airbag 37". In the present embodiment, the seal seat 37 includes an airbag seat 37' and an airbag 37". The conduit 38 has a vent passage formed therein and a viewing channel (not shown) for receiving the viewing tube 22, into which the viewing tube 22 is removably inserted. The viewing channel and the vent channel each extend to the distal end of the catheter 38, the distal end of the vent channel communicating with the space within the seal housing 37. In order to adjust the view of the distal end of the viewing tube 22, referring to fig. 10 and 11, the distal end of the viewing tube 22 needs to extend into the seal seat 37 to adjust the view by bending the distal end of the viewing tube 22.

In order to prevent the distal end of the viewing tube 22 from contacting the tissue inside the patient, referring to fig. 1-4, the viewing end receiving member 30 includes a first tube 31 and a window member 32, the first tube 31 is used for receiving the distal end of the viewing tube 22, i.e., a first cavity 31a is formed in the first tube 31, the window member 32 is made of a light-transmitting material, and the distal end of the first tube 31 is closed by the window member 32. That is, the proximal end of the first lumen 31a is open, and in particular, referring to fig. 8, the proximal end of the first hose 31 communicates with the viewing channel of the catheter 38 to enable insertion of the viewing tube 22 into the first lumen 31a, and the distal end of the first lumen 31a is blind, so that contact of the viewing tube 22 with the internal tissue of the patient can be avoided. When the viewing tube 22 captures an image of the tissue within the patient, light diffusely reflected from the patient tissue needs to pass through the window member 32 before it can be captured by the image sensor at the distal end of the viewing tube 22. Thus, the window 32 needs to have a certain light transmittance.

When the view of the distal end of the viewing tube 22 needs to be adjusted, the first hose 31 needs to be bent and reset following the viewing tube 22, and since the laryngeal mask belongs to an artificial airway placed in the mouth of a patient and the pharyngeal cavity, a high quality reliability needs to be ensured, and therefore, the thickness of the first hose 31 needs to ensure both structural strength and good flexibility. The viewing tube 22 is an elongated tube with limited bending force at the distal end, and if the thickness of the first hose 31 is too thick, the bending and restoring resistance of the viewing tube 22 may be increased, and may not be able to bend; if the first hose 31 is like a plastic film on the market, there are mainly the following safety problems: 1. when the distal end of the viewing tube 22 is inserted into the first hose 31, the first hose 31 is highly likely to be punctured by the viewing tube 22; 2. after the laryngeal mask body 3 is placed in a patient, when the patient breathes spontaneously or the breathing machine runs, the positive and negative pressure alternation condition can occur in the laryngeal mask airway, the first hose 31 is likely to flutter, the laryngeal mask body can enter the airway, the artificial airway is blocked, and further the risk of insufficient oxygen supply and even suffocation of the patient can occur.

Referring to fig. 4, the first hose 31 includes a first corrugated section 310 and a first rib 311 extending along the length direction of the first corrugated section 310, wherein the inner wall of the first corrugated section 310 has a smooth structure, and the first corrugated section 310 has peaks and valleys, and the inner wall of the first corrugated section 310 has a smooth structure, so that the thickness at the peaks is greater than the thickness at the valleys, and the peaks and valleys are alternately arranged along the length direction of the first corrugated section 310, so that the thickness of the first corrugated section 310 is alternately arranged in a thick and thin manner along the length direction.

It will be appreciated that, in the process of forming the hose, when the thickness of the hose is thinner, the fluidity of the raw slurry for casting the hose in the mold is poorer, the raw slurry may not flow sufficiently to the end in the flow direction, and thus the structure at the flow end of the raw slurry of the hose may have leaks, and the hose is a waste product; or the thickness is uneven, and the thinner part is extremely thin, so that the hose is extremely easy to damage and the quality is unqualified. For this purpose, in the present application, the thickness of the first rib 311 is greater than the corresponding thickness at the trough of the first corrugated section 310. In the injection molding process of the first hose 31, the raw slurry flows along the direction of the position of the mold corresponding to the first rib 311, the first rib 311 is similar to a main flow channel, and the flow resistance of the raw slurry can be reduced and the raw slurry can smoothly flow due to the thicker thickness of the first rib 311, that is, the larger space of the mold corresponding to the position of the first rib 311; the primary pulp flows from the position corresponding to the first rib 311 to the position corresponding to the wave crest on the two lateral sides, the wave crest is similar to a flow tributary, and the thickness of the wave crest is thicker, so that the flow resistance of the primary pulp can be reduced, and the primary pulp can fill the position corresponding to the wave crest of the die; meanwhile, the raw pulp at the wave crest entering the die can flow from the wave crest to two sides of the wave crest, the thickness of the wave trough is thinner, the flow resistance of the raw pulp in the die is larger, but the raw pulp at the corresponding positions of two adjacent wave crests can flow to the corresponding positions of the wave trough in the middle at the same time, the flowing distance of the raw pulp is shorter, and the raw pulp can fully reach the corresponding positions of the wave trough for forming.

By the design of the first ribs 311 and the wave crests, the wave troughs can have a thinner thickness and higher quality reliability. Due to the relatively thin thickness of the valleys, the first hose 31 can be made flexible, and can be synchronously bent and reset following the viewing tube 22. The thickness design of the first ribs 311 and the wave crests also increases the structural strength of the first hose 31, so that the first hose 31 cannot deform under the alternating action of positive and negative pressure to block the ventilation channel.

It will be appreciated that the first bellows 310 is located at the bend of the first hose 31 (see fig. 11) so that the bending facilitating effect of the first bellows 310 is exerted.

In the present embodiment, the distal end of the viewing tube 22 is generally curved toward the patient's glottis, i.e., generally away from the bottom of the seal 37. The first hose 31 is bent in the same direction as the distal end of the viewing tube 22. It will be appreciated that there is a materially neutral layer when the first hose 31 is bent, which refers to: the material is stretched during bending, the bent outer layer is extruded, and the bent inner layer must have a transition layer in its cross section that is neither stretched nor compressed, the stress being almost equal to zero, this transition layer being called the neutral layer of the material, the length of which remains unchanged during bending as before bending.

The first rib 311 in the embodiment of the present application is disposed in a plane where the neutral layer of the first hose 31 is located. As such, when the first hose 31 is bent, the first rib 311 does not substantially generate bending resistance against the bending of the first hose 31. In the outer surface of the first hose 31, there are two positions at the intersection of the surface of the neutral layer and the outer surface of the first hose 31, and the two positions are symmetrically distributed about the axis of the first hose 31, so that one first rib 311 may be provided at each of the two positions, or only one first rib 311 may be provided.

Further, the thickness of the first rib 311 is greater than or equal to the corresponding thickness at the peak of the first corrugated segment 310. In this way, it can be ensured that the raw slurry can smoothly flow from the position corresponding to the first rib 311 of the die to the position corresponding to the peak. In this embodiment of the present application, the thickness of the first rib 311 is equal to the thickness of the crest of the first corrugated section 310, so as to reduce the manufacturing difficulty of the mold and reduce the precision requirement on the mold.

Further referring to fig. 1-4, the first hose 31 further comprises a first connection section 312 and/or a second connection section 313. The first connecting section 312 is integrally formed with the first corrugated section 310 and/or the second connecting section 313 is integrally formed with the first corrugated section 310. That is, the first hose 31 may include only the first bellows portion 310 and the first connection portion 312, and not the second connection portion 313; the first hose 31 may also comprise only the first corrugated section 310 and the second connecting section 313, without the first connecting section 312; the first hose 31 may further comprise a first corrugated section 310, a first connection section 312 and a second connection section 313.

Referring to fig. 4, the first connecting section 312 is connected to the proximal end of the first corrugated section 310, and the proximal end of the first rib 311 extends to the first connecting section 312, and the thickness of the first connecting section 312 is greater than the corresponding thickness at the trough of the first corrugated section 310. The first connection section 312 is used to connect the conduit 38 of the laryngeal mask body 3, and the thickened design of the first connection section 312 increases the structural strength of the connection of the first hose 31.

Referring to fig. 4, the second connecting section 313 is connected to the distal end of the first corrugated section 310, the distal end of the first rib 311 extends to the second connecting section 313, and the thickness of the second connecting section 313 is greater than the corresponding thickness at the trough of the first corrugated section 310. The window piece 32 seals the distal end portion of the second connection section 313, and the thickening design of the second connection section 313 can increase the structural strength of the connection portion of the first hose 31 and the window piece 32, and on the other hand, when the distal end of the video tube 22 is inserted into the first hose 31, the distal end of the video tube 22 will rub against the inner wall of the second connection section 313, and the second connection section 313 can strengthen the structural strength of the first hose 31, so as to prevent breakage during use.

The thickening design of the first connecting section 312 and the second connecting section 313 can also facilitate molding, for example, when the injection molding opening is located at a position corresponding to the first connecting section 312 of the mold, the raw slurry can reach a position corresponding to the second connecting section 313 along the position corresponding to the first connecting section 312 and the position corresponding to the first rib 311, and can sufficiently flow in the positions corresponding to the first connecting section 312 and the second connecting section 313, thereby improving the reliability of the molding quality of the first hose 31.

In this embodiment, the thickness corresponding to the peak of the first corrugated section 310 is equal to the thicknesses of the first connecting section 312, the second connecting section 313 and the first rib 311, so as to further reduce the difficulty in manufacturing the mold of the first hose 31 and reduce the precision requirement on the mold.

In the embodiment of the present application, the inner wall of the first hose 31 is of a smooth structure so that the video tube 22 is smoothly inserted into the first cavity 31a of the first hose 31. After the laryngeal mask body 3 is placed in the patient, the viewing device is removed from the laryngeal mask body 3, the laryngeal mask body 3 is held in the pharyngeal cavity of the patient, and the viewing device can be reinstalled when the patient's position changes, or the patient moves, or the operator needs to perform an endotracheal intubation, that is, the viewing tube 22 needs to be reinserted into the viewing cavity and the first hose 31, if

The inner wall of the first hose 31 is formed with a step, and the distal end of the viewing tube 22 may abut against the step, so that the distal end of the viewing tube 22 cannot be further inserted into the distal end of the first hose 31, which may delay the operation time and even delay the rescue time.

The window member 32 is used to close the distal end of the first hose 31, while also meeting the requirements for good light transmission. The window member 32 may be integrally formed with the first hose 31, and in this case, the first hose 31 needs to be made of a material with better light transmittance, and meanwhile, needs to have better flexibility and better material forming performance.

In one embodiment of the present application, the window member 32 and the first hose 31 are of a split type structure, for example, the window member 32 is made of polycarbonate or polymethyl methacrylate, and the first hose 31 is made of polyvinyl chloride. Polycarbonate or polymethyl methacrylate has good light transmittance, but has high hardness and is not suitable for bending. The polyvinyl chloride has good bending property and good flexibility, and the friction resistance of the polyvinyl chloride in the penetrating process of the video tube 22 is small, but the light transmittance of the polyvinyl chloride cannot meet the requirement of the video tube 22 on the light transmittance. Therefore, the inventors of the present application have found out, through numerous experimental attempts, that the first hose 31 made of polyvinyl chloride is assembled with the window member 32 made of polycarbonate or polymethyl methacrylate, thereby achieving the technical effect of satisfying the above requirements.

Further, referring to fig. 12, the laryngeal mask according to an embodiment of the present application further includes a light guide 39, that is, the laryngeal mask according to an embodiment of the present application separates the viewing tube 22 and the light guide 39 from each other in physical space, so that the light emission of the light guide 39 does not substantially affect the collection of diffuse reflection light from the tissue inside the patient at the distal end of the viewing tube 22. The light guide 39 may be preset in the light guide channel. The light guide 39 may be, for example, a plastic optical fiber, or an electroluminescent element or a wire.

In order to make the visual far-end accommodation assembly 30 better suited for use in a laryngeal mask provided with a light guide 39 (see fig. 10 and 11), referring to fig. 1 to 4, the visual far-end accommodation assembly 30 of the present embodiment further includes a second hose 33 for accommodating the far end of the light guide 39 of the laryngeal mask, that is, the second hose 33 is internally formed with a second cavity 33a, and the far end of the light guide 39 is accommodated in the second cavity 33 a. The first hose 31 and the second hose 33 are arranged side by side and can be bent simultaneously, and the inner space of the distal end of the first hose 31 and the inner space of the distal end of the second hose 33 are isolated from each other, facilitating the arrangement of the distal end portion of the light guide 39 and the distal end portion cavity of the viewing tube 22.

The second hose 33 includes a second corrugated portion 330 and a second rib 331 extending along a length direction of the second corrugated portion 330, and an inner wall of the second corrugated portion 330 has a smooth structure. The second corrugated section 330 has a similar structure to the first corrugated section 310, and the thickness of the second rib 331 is greater than the corresponding thickness at the trough of the second corrugated section 330. This facilitates the shaping of the second hose 33. The forming process and forming principle of the second hose 33 are similar to those of the first hose 31, and will not be described herein.

The thickness of the second rib 331 is greater than or equal to the thickness corresponding to the peak of the second corrugated section 330, and thus, the raw slurry can smoothly flow from the position of the die corresponding to the second rib 331 to the position corresponding to the peak of the second corrugated section 330. In this embodiment of the present application, the thickness of the second rib 331 is equal to the thickness of the crest of the second corrugated section 330, so as to reduce the difficulty of manufacturing the mold and reduce the precision requirement on the mold.

In this embodiment, the neutral layer of the first hose 31 and the neutral layer of the second hose 33 are located in the same neutral layer, and the first rib 311 and the second rib 331 are located in the neutral layer. Such that neither the first ribs 311 nor the second ribs 331 substantially affect the bending of the first hose 31 and the second hose 33.

In this embodiment, the first hose 31 and the second hose 33 are integrally formed, the outer wall of the first hose 31 is connected with the outer wall of the second hose 33, and the same rib is sandwiched between the first corrugated section 310 and the second corrugated section 330, that is, in this case, the first rib 311 and the second rib 331 are formed into the same rib.

It will be appreciated that to facilitate simultaneous bending of the first 31 and second 33 hoses, the first 310 and second 330 bellows sections are correspondingly positioned, i.e., both are positioned at the bend of the visual distal receiving assembly 30.

Further, referring to fig. 4, the second hose 33 includes a third connecting section 332 and/or a fourth connecting section 333 integrally formed with the second corrugated section 330, the third connecting section 332 is connected to the proximal end of the second corrugated section 330, the proximal end of the second rib 331 extends to the third connecting section 332, and the thickness of the third connecting section 332 is greater than the corresponding thickness at the trough of the second corrugated section 330. The third connecting section 332 is used for connecting the conduit 38 of the laryngeal mask body 3, and the thickened design of the third connecting section 332 increases the structural strength of the connection of the second hose 33, while also facilitating the shaping of the third connecting section 332.

The fourth connecting section 333 is connected to the distal end of the second corrugated section 330, and the distal end of the second rib 331 extends to the fourth connecting section 333, and the thickness of the fourth connecting section 333 is greater than the corresponding thickness at the trough of the second corrugated section 330. The fourth connecting section 333 can provide a further installation space for the window member 32, and the thickening design of the fourth connecting section 333 can enhance the structural strength of the connection between the second hose 33 and the window member 32, and also facilitate the formation of the fourth connecting section 333.

The function of the light guide 39 is to provide a light source to emit light to the tissue of the patient, and therefore the light transmission requirements of the second hose 33 are not particularly high, and therefore, in the present embodiment, the distal end of the second hose 33 is formed as an integrally formed closed end.

Referring to fig. 5 and 6, the window member 32 includes a cover 320, a first socket portion 321 and a second socket portion 322, the first socket portion 321 is substantially cylindrical, the first socket portion 321 extends from an edge of the cover 320 toward the first hose 31, i.e. toward an inner side of the cover 320, referring to fig. 4, a distal end of the first hose 31 abuts against the inner side of the cover 320, and the first socket portion 321 is sleeved on an outer surface of the first hose 31, for example, by bonding. The second sleeving part 322 is located at one side of the cover 32 close to the second hose 33, the second sleeving part 322 is connected with the outer surface of the first sleeving part 321, and the second sleeving part 322 is sleeved on the outer surface of the second hose 33, for example, is adhered to the outer surface of the fourth connecting section 333.

According to the window piece 32, the second sleeving part 322 is sleeved on the outer surface of the second hose 33, so that the bonding area of the window piece 32 is increased, the connection reliability of the window piece 32 is improved, and the window piece 32 is prevented from falling off. In order to facilitate the gluing, the distal end of the second sleeve joint portion 322 is in an open structure, and the distal end of the second hose 33 protrudes out of the distal end of the second sleeve joint portion 322, so that the gluing can be performed from the distal direction of the second sleeve joint portion 322, and the gluing is filled at the junction of the second hose 33 and the second sleeve joint portion 322.

Further, referring to fig. 4, the outer surface of the cover 320 protrudes from the distal end of the second sleeve portion 322, and the distance between the distal end of the second hose 33 and the outer surface of the cover 320 is smaller than a predetermined length along the length direction of the second hose 33, so as to reduce the imaging interference of the light guide 39 on the distal end of the viewing tube 22. The specific values of the predetermined length satisfy the following conditions: the illumination of the distal end of the light guide 39 does not substantially interfere with the imaging of the distal end of the viewing tube 22.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A visual distal containment assembly for a laryngeal mask, comprising:

a first hose (31), wherein the first hose (31) is used for accommodating the distal end of the video tube (22) of the laryngeal mask, the first hose (31) comprises a first corrugated section (310) and first ribs (311) extending along the length direction of the first corrugated section (310), the inner wall of the first corrugated section (310) is of a smooth structure, and the thickness of the first ribs (311) is larger than the corresponding thickness at the trough of the first corrugated section (310);

the first hose (31) can synchronously bend and reset along with the video tube;

and the window piece (32), the window piece (32) is made of light-transmitting materials, and the distal end of the first hose (31) is closed by the window piece (32).

2. The visual distal receiving assembly according to claim 1, wherein the thickness of the first ribs (311) is greater than or equal to the corresponding thickness at the peaks of the first corrugated section (310).

3. The visual distal receiving assembly according to claim 1, wherein the first hose (31) further comprises a first connecting section (312) integrally formed with the first corrugated section (310), the first connecting section (312) being connected to a proximal end of the first corrugated section (310), the proximal end of the first rib (311) extending to the first connecting section (312), the first connecting section (312) having a thickness greater than a thickness corresponding to a trough of the first corrugated section (310); and/or the number of the groups of groups,

-the first hose (31) comprises a second connection section (313) integrally formed with the first corrugated section (310), the second connection section (313) being connected to the distal end of the first corrugated section (310); the distal ends of the first ribs (311) extend to the second connection section (313), and the thickness of the second connection section (313) is greater than the corresponding thickness at the trough of the first corrugated section (310).

4. A visual distal end receiving arrangement according to claim 3, wherein the thickness of the first corrugation segment (310) at the crest corresponds to the same thickness as the first rib (311), the thickness of the first rib (311) being the same as the thickness of the first connection segment (312) and/or the thickness of the second connection segment (313).

5. A visual distal receiving assembly according to claim 3, wherein the window member (32) is of unitary construction with the first hose (31); or, the window piece (32) and the first hose (31) are of a split structure, and the window piece (32) is covered on the outer side of the distal end of the first hose (31) in a sealing way.

6. The far-end viewing accommodation of claim 1, wherein the first rib (311) is located in a plane of a neutral layer of the first hose (31).

7. The visual far-end housing assembly of claim 1, wherein the window member (32) is made of polycarbonate or polymethyl methacrylate; and/or the first hose (31) is made of polyvinyl chloride.

8. A visual distal end holding assembly according to claim 3, further comprising a second hose (33) for holding the distal end of the light guide (39) of the laryngeal mask, the first hose (31) and the second hose (33) being arranged side by side, the inner space of the distal end of the first hose (31) and the inner space of the distal end of the second hose (33) being isolated from each other; the second hose (33) comprises a second corrugated section (330) and second ribs (331) extending along the length direction of the second corrugated section (330), the inner wall of the second corrugated section (330) is of a smooth structure, and the thickness of the second ribs (331) is larger than that of the corresponding trough of the second corrugated section (330).

9. The visual distal receiving assembly according to claim 8, wherein the thickness of the second rib (331) is greater than or equal to the corresponding thickness at the peak of the second corrugated section (330).

10. The far-end viewing accommodation of claim 8, wherein a neutral layer of the first hose (31) is located within a same neutral layer as a neutral layer of the second hose (33), the first rib (311) and the second rib (331) being located within the neutral layer.

11. The visual distal receiving assembly according to claim 8, wherein the second hose (33) comprises a third connecting section (332) integrally formed with the second corrugated section (330), the third connecting section (332) being connected to the proximal end of the second corrugated section (330), the proximal end of the second rib (331) extending to the third connecting section (332), the third connecting section (332) having a thickness greater than a thickness corresponding to a trough of the second corrugated section (330); and/or the number of the groups of groups,

the second hose (33) comprises a fourth connecting section (333) integrally formed with the second corrugated section (330), the fourth connecting section (333) is connected to the distal end of the second corrugated section (330), the distal end of the second rib (331) extends to the fourth connecting section (333), and the thickness of the fourth connecting section (333) is greater than the thickness corresponding to the trough of the second corrugated section (330).

12. The far-end view housing assembly according to claim 8, wherein the window member (32) includes a cover body (320), a first socket portion (321) and a second socket portion (322), the first socket portion (321) extends from an edge of the cover body (320) toward the first hose (31), a distal end of the first hose (31) abuts against an inner side of the cover body (320), the first socket portion (321) is sleeved on an outer surface of the first hose (31), and the second socket portion (322) is sleeved on an outer surface of the second hose (33).

13. The video distal receiving assembly according to claim 12, wherein both ends of the second socket portion (322) are formed in an open structure, and a distal end portion of the second hose (33) protrudes from a distal end portion of the second socket portion (322).

14. The visual distal end receiving assembly according to claim 12, wherein a distance separating a distal end of the second hose (33) from an outer side surface of the cover (320) is smaller than a predetermined length along a length direction of the second hose (33).

15. Laryngeal mask body, characterized by comprising a conduit (38), a sealing seat (37) connected to the distal end of said conduit (38), and a visual distal end housing assembly according to any one of claims 1 to 7, said conduit (38) being formed with a visual lumen for housing said visual tube (22); the viewing channel extends to the distal end of the catheter (38), at least part of the structure of the first hose (31) is located in the sealing seat (37), and the proximal end of the first hose (31) is communicated with the viewing channel.

16. Laryngeal mask body, characterized by comprising a conduit (38), a light guide (39), a sealing seat (37) connected to the distal end of the conduit (38), and a visual distal end housing assembly according to any one of claims 8 to 14, the conduit (38) being formed with a light guide channel for housing the light guide (39) and a visual channel for housing the visual tube (22); the light guide lumen and the viewing lumen extend to a distal end of the catheter (38); the proximal end of the first hose (31) is communicated with the visual cavity, the proximal end of the second hose (33) is communicated with the light guide cavity, at least part of the structure of the first hose (31) and at least part of the structure of the second hose (33) are located in the sealing seat (37), the light guide piece (39) is preset in the light guide cavity, and the distal end of the light guide piece (39) is located in the second hose (33).

17. Laryngeal mask characterized by comprising a visual device and the laryngeal mask body of claim 15 or 16, wherein the visual device comprises a display (21), a control part (23) and a visual tube (22) connected with the display (21), the visual tube (22) is inserted into the visual cavity in a pluggable manner, the distal end of the visual tube (22) is positioned in the first hose (31), and the distal end of the visual tube (22) can drive the first hose (31) to bend and reset under the drive of the control part (23).