CN109008926B

CN109008926B - Laryngoscope lens

Info

Publication number: CN109008926B
Application number: CN201810980574.8A
Authority: CN
Inventors: 周建伟; 刘奇松; 叶建平
Original assignee: Shenzhen Maiketian Life Science Co ltd
Current assignee: Shenzhen Maiketian Life Science Co ltd
Priority date: 2018-08-27
Filing date: 2018-08-27
Publication date: 2024-06-04
Anticipated expiration: 2038-08-27
Also published as: CN109008926A

Abstract

The embodiment of the application discloses a laryngoscope lens, which comprises a lens main body, a flange, a convex hull and a poking tongue piece. The lens body includes a proximal end, a distal end, and a middle portion therebetween, the lens body includes a curved upper surface and a lower surface, the proximal end of the lens body has an opening therethrough to the middle portion or a portion of the distal end to form a passageway for accessing an image capture tool. The flange is located the lower surface side of lens main part, and the flange extends to proximal end and distal end respectively from the middle part, and its width is progressively decreased from the middle part to proximal end or distal end, and the flange converges in the proximal end, and the lower surface is used for attaching human oral cavity. The convex hull is located at the distal end of the lower surface for lifting the epiglottis. The lower surface comprises a first section positioned at the far end, a second section positioned at the middle part and a third section positioned at the near end, wherein the first section is a straight line surface, and the second section and the third section are arc surfaces.

Description

Laryngoscope lens

Technical Field

The application relates to the field of medical instruments, in particular to a laryngoscope lens.

Background

A visual laryngoscope is a commonly used medical device for inspecting the oral cavity and trachea for use by medical personnel to view the oral cavity and throat tissues, or to manipulate the tongue, laryngeal door or throat to facilitate insertion of endotracheal tubes or other devices. In the trachea cannula for anesthesia and emergency treatment, medical staff can finish the trachea cannula through a laryngoscope screen, so that safe and effective operation of a patient is ensured, and complications of the trachea cannula are reduced.

The success rate of the intubation of the conventional airway of the visual laryngoscope is higher, but the success rate of the intubation still needs to be improved under the difficult airway condition. A difficult airway refers to a clinical situation where anesthesiologists with more than five years of clinical anesthesia experience difficulty in mask ventilation or tracheal intubation. Some of the difficult airways are embodied clinically as: glottis exposure level, opening degree, chin distance, temporomandibular joint activity degree, head and neck activity degree, overlong upper incisors and the like, wherein the opening degree refers to the distance between the upper and lower incisors when the maximum opening is achieved, and the opening degree is smaller than 3cm or a laryngoscope cannot be placed when two transverse fingers of an inspector are used, so that operation difficulty and risk can be greatly increased. Thus, medical personnel cannot insert the lens or insert it once when encountering patients with lower levels of glottic exposure and less openness. The prior visual laryngoscope has larger lens size, and is easy to cause difficult tracheal intubation or related complications when the patient with difficult airway is subjected to tracheal intubation.

Disclosure of Invention

The embodiment of the application provides a laryngoscope lens suitable for small opening degree.

In order to solve the technical problems, the application provides a laryngoscope lens which comprises a lens main body, a flange, a convex hull and a poking tongue piece. The lens body includes a proximal end, a distal end, and a central portion therebetween, the lens body includes a curved upper surface and a curved lower surface opposite the upper surface, the proximal end of the lens body has an opening therethrough to the central portion or a portion of the distal end to form a channel for accessing an image capture tool. The flange is formed by extending the side edge of the lower surface of the lens main body, the flange extends from the middle part to the proximal end and the distal end respectively, the width of the flange is gradually reduced from the middle part to the proximal end or the distal end, the flange is converged at the proximal end, and the flange and the lower surface are used for being attached to the oral cavity of a human body. The convex hull is located at a distal end of the lower surface for lifting the epiglottis. The lower surface comprises a first section positioned at the far end, a second section positioned at the middle part and a third section positioned at the near end, wherein the first section is a linear surface, and the second section and the third section are arc surfaces.

In an embodiment, the curvature of the third section is greater than the curvature of the second section.

In one embodiment, the curvature of the upper surface is less than the curvature of the second section of the lower surface, and the distance between the upper surface and the lower surface at the middle portion is made greater than the distance between the upper surface and the lower surface at the proximal end or the distal end.

In one embodiment, the channel is rectangular in cross-section, the channel having an upper inner surface and a lower inner surface, the curvature of the upper inner surface and the lower inner surface being intermediate the curvature of the upper surface and the second section of the lower surface.

In one embodiment, the lower inner surface is adjacent to the lower surface with a wall thickness therebetween, the wall thickness of the lower inner surface and the lower surface being greater at the central portion than at the proximal or distal ends.

In an embodiment, the laryngoscope lens further comprises a tab located on a side of the upper surface, the flange and the tab being located on different sides of the proximal end of the lens body, the tab extending distally and meeting the flange in the convex hull, wherein the intersection of the tab and the flange forms a support structure.

In one embodiment, the minimum gauge of the cross section of the laryngoscope lens middle is 12mm to 14mm, the minimum gauge of the cross section of the laryngoscope lens proximal end is 12mm to 13mm, and the minimum gauge of the cross section of the laryngoscope lens proximal end is less than or equal to the minimum gauge of the cross section of the laryngoscope lens middle.

In an embodiment, the lens body further comprises a side wall located between the upper surface and the lower surface, an included angle is formed between the flange and the side wall, the included angle is between 95 ° and 110 °, an accommodating space is formed between the flange and the lens body, and the accommodating space is used for inserting an endotracheal tube.

In an embodiment, a guide line or a concave arc surface for inserting the tracheal cannula is arranged on one surface of the flange close to the upper surface.

On the premise of meeting the functional requirements, the laryngoscope lens is suitable for patients with small opening degree by making the structural improvement design of the small-size laryngoscope, and the laryngoscope lens is provided with a larger accommodating space for inserting the trachea cannula, and is added with a guide wire to assist medical staff in operation, so that the success rate of the trachea cannula of the medical staff is improved, and the operation risk is reduced. On the other hand, through bearing structure, strengthen the overall stability of laryngoscope lens, laryngoscope lens can not be damaged or distortion because of the size is less and is knocked with easily.

Drawings

Fig. 1 is a cross-sectional view of a laryngoscope lens according to an embodiment of the application.

Fig. 2 is a schematic view of a laryngoscope lens according to an embodiment of the application.

Fig. 3 is a middle cross-sectional view of a laryngoscope lens according to an embodiment of the application.

Fig. 4 is a middle cross-sectional view of a laryngoscope lens according to an embodiment of the application.

Fig. 5 is a distal cross-sectional view of a laryngoscope lens according to an embodiment of the application.

Detailed Description

Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

Fig. 1 is a schematic view of a laryngoscope lens according to an embodiment of the application, and fig. 2 is a schematic view of a laryngoscope lens according to an embodiment of the application. Referring to fig. 1 and 2, in one embodiment of the present application, a laryngoscope lens 1 comprises: lens body 10, flange 20, convex hull 30 and tongue 40. The lens body 10 comprises a proximal end, a distal end and a middle portion between the proximal end and the distal end, the lens body 10 comprises a curved upper surface 11 and a curved lower surface 12 opposite the upper surface 11, the proximal end of the lens body 10 has an opening 13, the opening 13 extending through to the middle portion or a portion of the distal end to form a channel 14, the channel 14 being for accessing an image acquisition tool. The flange 20 is formed by extending from the side of the lower surface 12 of the lens body 10, the flange 20 extends from the middle part to the proximal end and the distal end respectively, and the width thereof decreases from the middle part to the proximal end or the distal end, wherein the flange 20 converges to the proximal end, and the flange 20 and the lower surface 12 are used for attaching to the oral cavity of a human body. The convex hull 30 is located distally of the lower surface 12 for lifting the epiglottis.

In this embodiment, as shown in fig. 1, the opening 13 extends through to the middle part, which may be understood as a part of the middle part or the whole of the middle part, and the channel does not reach the distal end; but not so limited, the channel 13 may be configured such that the opening 13 extends through to some or all of the distal end.

In an embodiment, the laryngoscope lens 1 is suitable for patients with small opening, and the parts of the laryngoscope lens 1 can be made as small as possible under the condition of meeting the functions, and the problems possibly caused by making the laryngoscope lens small are solved by designing the parts of the laryngoscope lens 1.

In one embodiment, the flange 20 and the lower surface 12 are configured to be attached to the oral cavity of a person, wherein the flange 20 may also be understood as a portion of the lower surface 12.

In one embodiment, the lower surface 12 includes a first section 121 at a distal end, a second section 122 at a middle portion, and a third section 123 at a proximal end. As shown in fig. 1, the first, second and third sections 121, 122 and 123 are spaced apart by a dotted line, and smooth transitions are provided between the first, second and third sections 121, 122 and 123.

In one embodiment, as shown in fig. 1, the ratio between the first section 121, the second section 122 and the third section 123 may be adjusted according to the needs of the designer, and is not limited to the ratio shown in the drawings of the specification.

In an embodiment, the first section 121 is a straight surface, the second section 122 and the third section 123 are arc surfaces, wherein the curvature of the third section 123 is greater than the curvature of the second section 122, i.e. the curvature of the third section 123 is less than the curvature of the second section 122. This design is adapted to the physiological structure of the human mouth so that the lower surface 12 can better conform to the patient's mouth to make more room for operation. On the other hand, the middle part of the laryngoscope lens 1 can be positioned in a deeper position of the oral cavity, so that medical staff can conveniently place the laryngoscope lens in the epiglottis valley through the convex hull 30 positioned at the far end, and the glottis of a patient can be exposed by applying small force.

In one embodiment, the curvature of the upper surface 11 is smaller than the curvature of the lower surface 12, such that the distance between the upper surface 11 and the lower surface 12 in the middle is greater than the distance between the upper surface 11 and the lower surface 12 in the proximal end or the distal end. In this embodiment, the curvature of the upper surface 11 may be, for example, less than the curvature of the second section 122 or less than the curvature of the second and third sections 122, 123. The laryngoscope lens 1 is thicker in the middle and thinner at the proximal and distal ends to prevent injury to the human mouth at the distal end deep into the throat and near the teeth.

In one embodiment, the cross section of the channel 14 may be rectangular, circular or oval, which may be adjusted according to the requirement without limitation. The channel 14 has an upper inner surface 141 and an opposite lower inner surface 142, the curvature of the upper inner surface 141 and the lower inner surface 142 being intermediate the curvature of the upper surface 11 and the lower surface second section 122. Wherein the curvature of the upper inner surface 141 and the lower inner surface 142 may also be the same as the curvature of the upper surface 11.

In one embodiment, as shown in fig. 1, the lower inner surface 142 is adjacent to the lower surface 12 with a wall thickness therebetween, and the wall thickness of the lower inner surface 142 and the lower surface 14 is greater at the middle than at the proximal end or the distal end. The wall thickness in the middle of the laryngoscope lens 1 is larger, and the flange 20 and the poking piece 40 which are connected with the laryngoscope lens are also thicker, so that the strength and rigidity of the middle are larger, better supporting force can be provided, larger pressure is born, and certain deformation resistance is realized, so that the risk of damage to the mouth cavity and the risk of influence on viewing throat tissues of the laryngoscope lens 1 are reduced.

Fig. 3 is a middle cross-sectional view of a laryngoscope lens according to an embodiment of the application. Referring to fig. 1 to 3, in one embodiment, the tongue 40 is located on a side of the upper surface 11, and the flange 20 and the tongue 40 are located on different sides of the proximal end of the lens body 10, so as to achieve different functions of the flange 20 and the tongue 40. The tab 40 extends distally and meets the flange 20 with the convex hull 30 (shown in fig. 2).

In one embodiment, as shown in fig. 3, the minimum diameter D of the cross section of the middle part of the laryngoscope lens 1 is 12 mm-14 mm, and the minimum diameter D of the cross section of the proximal end of the laryngoscope lens 1 is 12 mm-13 mm. Wherein, the minimum diameter D comprises two end points of 12mm and 14mm, and the minimum diameter of the far end comprises two end points of 12mm and 13mm. The minimum height of the polygon-like shape formed by the periphery of the cross section of the middle part of the laryngoscope lens 1 is between 12mm and 14mm, namely the minimum diameter distance D, and on the other hand, the minimum diameter distance D corresponds to the opening degree of a patient. In the embodiment of the present application, the minimum diameter D is smaller than the opening size of the patient, and the minimum diameter D of the proximal end of the laryngoscope lens 1 is smaller than or equal to the minimum diameter D of the middle part of the laryngoscope lens 1, so that the shape of the laryngoscope lens 1 is basically a shuttle shape with a larger middle part and smaller two ends, so as to facilitate the medical staff to use the laryngoscope lens 1 of the present application. It is to be appreciated that the smallest pitch of a rectangle is its shorter side length and the smallest pitch of a square is its side length.

Since the opening degree of a patient with a generally difficult airway is around 3cm, the laryngoscope lens 1 of the application can be tilted at an angle when inserted into the patient's mouth so that the laryngoscope lens 1 is inserted with a height of minimum diameter D. In this embodiment, the laryngoscope lens 1 may be tilted, for example, clockwise by an angle β, i.e. such that the height of the laryngoscope lens 1 is the minimum diameter D.

In one embodiment, the lens body 10 further includes a sidewall 15 between the upper surface 11 and the lower surface 12, and an included angle α is formed between the flange 20 and the sidewall 15, and the included angle α is between 95 ° and 110 °, where the included angle α includes two endpoint data of 95 ° and 110 °. Wherein the angle α may be, for example, 96 °,98 °,100 °, or 105 °. The included angle α is configured such that a larger accommodating space is formed between the flange 20 and the lens body 10, and the accommodating space can be adjusted by adjusting the size of the included angle α, wherein the accommodating space is used for inserting an endotracheal tube.

In one embodiment, as shown in figures 2 and 3, when the laryngoscope lens 1 is placed horizontally, the side wall 15 is substantially perpendicular to the horizontal plane, and the angle α between the flange 20 and the side wall 15 is understood to be the angle between the flange 20 and a vertical plane perpendicular to the horizontal plane within an error range (e.g., within an error range of 0 ° to 5 °). Wherein the flange 20 comprises two faces adjacent to said lower surface 12 and adjacent to said side wall 15; the included angle α may be an included angle between a side close to the side wall 15 and the side wall 15, or an included angle between a side close to the lower surface 12 and the side wall 15.

In one embodiment, the laryngoscope lens 1 further comprises a retaining member 50 for retaining the video display component of the laryngoscope 1. In fig. 2, the holding structure 50 is not shown for clarity of illustration of the relationship between the other laryngoscope lens components (10, 20, 30, 40), but this embodiment is not so limited as not to the holding structure 50.

In an embodiment, the various components (10, 20, 30, 40, 50) of the laryngoscope lens 1 may be, for example, integrally formed. Or, the other laryngoscope lens parts (10, 20, 30, 40) except the holding part 50 are integrally formed, thereby improving the supporting force of the whole laryngoscope lens.

Fig. 4 is a middle cross-sectional view of a laryngoscope lens according to an embodiment of the application. In one embodiment, the laryngoscope lens of the application is relatively small in size, as it is adaptable to small-incision patients. In this connection, a groove or a guide line for insertion of an endotracheal tube may be provided on the side of the flange 20 close to the upper surface 11, or it may be designed as a concave arc surface. With this supplementary medical staff carries out the trachea cannula, prevents that the trachea cannula from accidentally injuring the patient. As shown in fig. 4, the grooves or the flow guide lines may be 1, but not limited thereto. Wherein, the concave cambered surface can be tilted at a certain angle or radian at the edge of the upper surface of the flange, so that a boundary for limiting the trend of the trachea cannula is formed at the edge of the upper surface of the flange 20 when the trachea cannula is inserted, thereby improving the success rate of the trachea cannula, and reducing the contact area of the trachea cannula and the oral cavity of a human body so as to prevent the oral cavity of the human body from being injured by mistake. The grooves, lines or curves of the flange may for example be provided in the middle of the laryngoscope lens 1, whereas no such structures are provided at the distal and proximal ends of the laryngoscope lens 1; however, the grooves, the guide lines or the concave cambered surfaces may be formed in the middle and the proximal ends (or the distal ends), but not in the distal ends (or the proximal ends), or the grooves, the guide lines or the concave cambered surfaces may be formed in the middle and the proximal ends, respectively.

Fig. 5 is a distal cross-sectional view of a laryngoscope lens according to an embodiment of the application. Referring to fig. 1 to 5, in one embodiment, the intersection of the flange 20 and the tongue 40 forms a support structure (as shown in fig. 5) that includes a lateral support and a vertical support. The support structure may enhance the stability of the laryngoscope lens 1 as a whole, so that the laryngoscope lens 1 has better compression and deformation resistance properties. In operation, the supporting structure can avoid the phenomena that the laryngoscope lens 1 is more easily damaged by collision or distortion damage due to small size; on the other hand, it is also possible to facilitate handling by medical personnel without causing handling difficulties due to the small size of the laryngoscope lens 1, such as lifting the patient's epiglottis or poking the patient's tongue.

In one embodiment, the flange 20 converges at the proximal end of the lens body 10 and at a distance from the opening 13, which may be, for example, 1cm to 4cm. This design may be such that only the lens body 10 and the channel 14 are near the opening 13 and that this portion is placed in the vicinity of the patient's mouth and teeth during the surgical procedure. In operation, the risk of the laryngoscope lens being stressed such that this portion accidentally injures the patient's mouth and teeth can be reduced.

In an embodiment, when the laryngoscope lens 1 is placed horizontally, the second section 122 is tangential to the horizontal, the first section 121 being at an angle between 35 ° and 45 ° to the horizontal, which may be for example 40 °. The included angle allows the first segment 121 and the distally located convex hull 30 to tilt a greater angle, thereby allowing the medical personnel to more easily place the convex hull 30 in the patient's oral cavity's epiglottis valley during surgery to pick up the epiglottis.

In one embodiment, the components of the laryngoscope lens 1 are smooth (or slippery) transitions between themselves to reduce the likelihood of injuring the patient.

In one embodiment, the configuration shown in fig. 1-5 is merely illustrative, and the details or proportions of the configuration may be adjusted according to the needs of the designer, rather than the laryngoscope lens configuration of fig. 1-5.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A laryngoscope lens, comprising:

A lens body including a proximal end, a distal end, and a central portion therebetween, the lens body including a curved upper surface and a curved lower surface opposite the upper surface, the proximal end of the lens body having an opening therethrough to the central portion or a portion of the distal end to form a passageway for accessing an image capture tool;

A flange formed by extending from the side edge of the lower surface of the lens main body, wherein the flange extends from the middle part to the proximal end and the distal end respectively, and the width of the flange decreases from the middle part to the proximal end or the distal end, and the flange is converged at the proximal end, and the lower surface is used for being attached to the oral cavity of a human body;

A convex hull distal to the lower surface, the convex hull configured to lift up the epiglottis;

Wherein the lower surface comprises a first section positioned at the distal end, a second section positioned at the middle part and a third section positioned at the proximal end, the first section is a straight line surface, the second section and the third section are arc surfaces, the curvature of the third section is larger than that of the second section, the curvature of the upper surface is smaller than that of the second section and/or the third section of the lower surface, and the distance between the upper surface and the lower surface at the middle part is larger than that between the upper surface and the lower surface at the proximal end or the distal end, and the first section, the second section and the third section are in smooth transition;

the channel has an upper inner surface and a lower inner surface with a curvature intermediate the curvatures of the upper surface and the lower surface second segment.

2. The laryngoscope lens as claimed in claim 1 wherein the channel is rectangular in cross section.

3. The laryngoscope lens as recited in claim 2, wherein the lower inner surface is adjacent to the lower surface with a wall thickness therebetween, the lower inner surface and the lower surface having a wall thickness in the central portion that is greater than the wall thickness of both at the proximal end or the distal end.

4. A laryngoscope lens according to any one of claims 1 to 3, further comprising a tab located on a side of the upper surface, the flange and tab being located on different sides of the proximal end of the lens body, the tab extending distally and meeting the flange in the convex hull, wherein the intersection of the tab and flange forms a support structure.

5. The laryngoscope lens according to claim 4, wherein the minimum gauge of the cross section of the laryngoscope lens central portion is 12mm to 14mm, the minimum gauge of the cross section of the laryngoscope lens proximal portion is 12mm to 13mm, and the minimum gauge of the cross section of the laryngoscope lens proximal portion is less than or equal to the minimum gauge of the cross section of the laryngoscope lens central portion.

6. The laryngoscope lens according to claim 4, wherein the lens body further comprises a side wall between the upper surface and the lower surface, wherein the flange forms an included angle with the side wall, the included angle being between 95 ° and 110 °, the included angle being such that a receiving space is formed between the flange and the lens body, the receiving space being for insertion of an endotracheal tube.

7. The laryngoscope lens according to claim 6, wherein a face of the flange proximate the upper surface is provided with a flow guide line or concave curve for insertion of the endotracheal tube.

8. A laryngoscope lens, comprising:

The flange is positioned on the side edge of the lower surface of the lens main body, the flange extends from the middle part to the proximal end and the distal end respectively, the width of the flange decreases from the middle part to the proximal end or the distal end, the flange is converged at the proximal end, and the lower surface is used for being attached to the oral cavity of a human body;

Wherein the lower surface comprises a first section at the distal end, a second section at the middle portion and a third section at the proximal end, the first section being a straight line surface, the second and third sections being arc surfaces, the third section having a curvature greater than the second section, the upper surface having a curvature less than the curvature of the lower surface second section and/or the lower surface third section, and such that the upper surface and the lower surface are at a greater distance from the middle portion than the upper surface and the lower surface are at the proximal end or the distal end, the channel having an upper inner surface and a lower inner surface, the upper inner surface and the lower inner surface having a curvature intermediate the curvatures of the upper surface and the lower surface second section;

The minimum diameter of the cross section of the middle part of the laryngoscope lens is 12 mm-14 mm, and the minimum diameter of the cross section of the near end of the laryngoscope lens is 12 mm-13 mm.