Speculum with guide channel

Abstract

The present application provides a laryngoscope blade with a guiding channel, which is used for laryngoscopy, and can be combined with a light-emitting accessory to become a light-assisted direct laryngoscope, or can be combined with a video laryngoscope to become an indirect laryngoscope. The laryngoscope blade includes a laryngoscope blade body extending in an arc shape, which is hollow inside to form a channel, and one end of the laryngoscope blade body has a transparent barrier wall to close the channel, and the other end has an entrance to communicate with the channel, and the channel has a tapered guiding section adjacent to the transparent barrier wall. A light-emitting element of the light-emitting accessory or a camera head of the video laryngoscope extends into the channel from the entrance and is guided by the tapered guiding section to the transparent barrier wall, and when the light-emitting element or the camera head is located on the transparent barrier wall, the clearance between the light-emitting element or the camera head and an inner wall adjacent to the channel is between 0.08 mm and 0.12 mm, thereby accurately positioning the light-emitting element or the camera head, so that the illumination range or the shooting range can cover the entire epiglottis and glottis.

Description

TECHNICAL FIELD

[0001] The present invention relates to a speculum with a guide channel, in particular, the invention relates to a speculum body with a hollow channel formed inside the speculum body, and a tapered guide section at the front end of the channel, so that when assembling a light-emitting accessory or a video laryngoscope, the light-emitting accessory or the camera can be guided by the tapered guide section to accurately position the light-emitting accessory or the camera. BACKGROUND

[0002] The speculum is used in laryngoscopy, clinical anesthesia of patients, difficult tracheal intubation, emergency (ICU) rescue and patients with respiratory difficulties, or outdoor / poor rural patients, etc. When the patient's laryngeal epiglottis needs to be opened to make the glottis and airway unobstructed, the medical staff inserts the arc-shaped speculum body into the larynx and presses against the epiglottis to unblock the glottis and airway.

[0003] Generally, laryngoscopes are divided into direct laryngoscopes or indirect laryngoscopes (video laryngoscopes).

[0004] Direct laryngoscopes, such as Chinese invention patent publication No. CN1747680A "Disposable laryngoscope", US patent publication No. US20140024921A1 "INSTRUMENT SUITABLE FOR THE MRI ENVIRONMENT SUCH ASA LIGHTED, DISPOSABLE, MR SAFE LARYNGOSCOPE", combine the speculum body with an upright handle, the speculum body is equipped with a light-emitting accessory, and the battery is installed in the upright handle.

[0005] Indirect laryngoscopes (video laryngoscopes), such as invention patent publication No. 201603772 "Throat mirror with waterproof structure and waterproof structure thereof", combine an arc-shaped rigid camera tube body at the end of the handle, and the disposable arc-shaped waterproof sleeve (speculum) must match the arc-shaped rigid camera tube body, so that it can be used on the arc-shaped rigid camera tube body when in use, and the arc-shaped waterproof sleeve (speculum) can be discarded after use.

[0006] The above-mentioned Chinese invention patent publication No. CN1747680A and US patent publication No. US20140024921A1 fix the light-emitting accessory on the speculum body, and do not need to consider the positioning of the light-emitting accessory when in use. The above-mentioned invention patent publication No. 201603772 uses a rigid camera tube body, and does not need to consider the positioning of the camera when in use.

[0007] The utility model discloses a "one-time use laryngoscope" of Chinese patent announcement No. CN217408785U, which is combined with a handle sleeve at one end of the laryngoscope blade main body (the viewing piece main body). When in use, the handle sleeve can be sleeved on the grip of the video laryngoscope, the camera can be inserted into the camera channel and extended to the front end of the laryngoscope blade main body (the viewing piece main body) from the outlet of the camera channel.

[0008] When the above-mentioned Chinese patent announcement No. CN217408785U is used as an indirect laryngoscope, the handle sleeve needs to be sleeved on the grip of the video laryngoscope, so the video laryngoscope cannot use a rigid camera tube body and must use a hose. The camera hose will be bent when passing through the arc-shaped camera channel, and without a guiding mechanism, the camera at the front end of the camera hose may not be accurately positioned in the shooting direction at the front end of the laryngoscope blade main body (the viewing piece main body). If it is used as a direct laryngoscope, when used with a light-emitting accessory, the light-emitting hose will also be bent and deformed when passing through the camera channel, and the light-emitting accessory cannot be accurately positioned in the irradiation direction at the front end of the laryngoscope blade main body (the viewing piece main body). SUMMARY

[0009] In order to overcome the problem that the camera hose or the light-emitting hose cannot be accurately positioned in the shooting direction of the camera or the irradiation direction of the light-emitting accessory when extended into the viewing piece, the purpose of the present application is to provide a viewing piece with a guide channel, which can be combined with a light-emitting accessory to become a direct laryngoscope with light source assistance, or can be combined with a video laryngoscope to become an indirect laryngoscope.

[0010] The present application provides a viewing piece with a guide channel, which is used for laryngoscopy and can be combined with a light-emitting accessory to become a direct laryngoscope with light source assistance, or can be combined with a video laryngoscope to become an indirect laryngoscope. The viewing piece comprises:

[0011] A viewing piece main body extends in an arc shape. The inside of the viewing piece main body is hollow to form a channel. One end of the viewing piece main body has a transparent barrier wall closing the channel, and the other end has an inlet communicating with the channel. The channel has a tapered guide section adjacent to the transparent barrier wall. A light-emitting accessory or a camera of a video laryngoscope extends into the channel from the inlet and is guided by the tapered guide section to the transparent barrier wall. When the light-emitting accessory or the camera is positioned on the transparent barrier wall, the gap between the light-emitting accessory or the camera and an inner wall adjacent to the channel is between 0.08 mm and 0.12 mm. In this way, the light-emitting accessory or the camera is accurately positioned, and the irradiation range or the shooting range can cover the entire epiglottis and glottis.

[0012] Further, the inner wall is an upper wall and a lower wall adjacent to the channel in the arc bending direction of the viewing piece main body.

[0013] Further, the peep piece body has an outer arc and an inner arc, and the channel is formed from the outer arc to the adjacent transparent barrier to form the tapered guiding section.

[0014] Further, the channel is formed from the entrance to the adjacent transparent barrier to form the tapered guiding section.

[0015] Further, the peep piece body has an outer arc and an inner arc, and the outer arc and the inner arc are formed by two intersecting circles, and the outer arc is formed by an outer circle and the inner arc is formed by an inner circle. Alternatively, the peep piece body has an outer arc and an inner arc, and the outer arc and the inner arc are formed by two intersecting circles, and the outer arc is formed by an outer circle and the inner arc is formed by an inner circle. Further, the channel is formed from the entrance to the adjacent transparent barrier to form the tapered guiding section, and the peep piece body has the same wall thickness adjacent to the channel.

[0016] Further, the peep piece has a handle combined with the other end of the peep piece body, and the handle is hollow and has an extension channel, and the extension channel is connected to the channel through the entrance, and the end of the handle has an opening connected to the extension channel. Further, the handle is perpendicularly combined with the peep piece body, and the axis of the handle intersects with the extension line of the transparent barrier at an angle between 12 degrees and 14 degrees, and preferably, the angle is 13 degrees.

[0017] The following effects can be achieved according to the above technical features:

[0018] 1. The peep piece with a guiding channel can be directly used after the operator holds the handle to form a direct laryngoscope, or can form a direct laryngoscope with light assistance after assembling a light emitting accessory, or can form an indirect laryngoscope after assembling a video laryngoscope.

[0019] 2. When the light emitting accessory or the camera is assembled into the channel in the peep piece body, the light emitting accessory or the camera can be guided by the tapered guiding section to be accurately positioned when the light emitting accessory or the camera reaches the transparent barrier, and the handle is perpendicularly combined with the peep piece body, and the axis of the handle intersects with the extension line of the transparent barrier at an angle between 12 degrees and 14 degrees. In this way, the direction of the light emitting accessory or the direction of the camera can be controlled to ensure that the range of the light emitting accessory or the range of the camera can cover the entire epiglottis and glottis.

[0020] 3. When the light emitting accessory or the camera reaches the transparent barrier, the clearance between the light emitting accessory or the camera and the inner wall of the adjacent channel is between 0.08 mm and 0.12 mm. Since the light emitting accessory or the camera is inserted into the channel of the peep piece body, the main deformation direction is the arc bending direction, so the clearance is mainly between the light emitting accessory or the camera and the upper and lower walls of the adjacent channel in the arc bending direction of the peep piece body.

[0021] 4. The outer arc and inner arc of the speculum body of the present invention are formed by two circles that are either tangent or intersecting, and the outer arc is formed by the outer circle, and the inner arc is formed by the inner circle. The use of circular configuration can conform to the extension path from the oral cavity to the epiglottis, close to ergonomics, and avoid collision damage to the patient during use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the speculum with a guide channel of the present invention.

[0023] Figure 2 is a cross-sectional view of the speculum with a guide channel of the present invention.

[0024] Figure 3 is a schematic diagram of the use of tangent circles to form the outer arc and inner arc of the speculum body of the speculum with a guide channel of the present invention.

[0025] Figure 4 is a schematic diagram of the use of intersecting circles to form the outer arc and inner arc of the speculum body of the speculum with a guide channel of the present invention.

[0026] Figure 5 is a perspective exploded view of the light-assisted direct laryngoscope formed by the speculum with a guide channel in combination with a light-emitting accessory of the present invention.

[0027] Figure 6 is one of the schematic diagrams of the light-emitting piece of the light-emitting accessory entering the channel of the speculum body and being guided and positioned by the tapered guide segment when the light-assisted direct laryngoscope of the present invention is assembled.

[0028] Figure 7 is a cross-sectional view of Figure 6 .

[0029] Figure 8 is the second of the schematic diagrams of the light-emitting piece of the light-emitting accessory entering the channel of the speculum body and being guided and positioned by the tapered guide segment when the light-assisted direct laryngoscope of the present invention is assembled.

[0030] Figure 9 is a cross-sectional view of Figure 8 .

[0031] Figure 10 is the third of the schematic diagrams of the light-emitting piece of the light-emitting accessory entering the channel of the speculum body and being guided and positioned by the tapered guide segment when the light-assisted direct laryngoscope of the present invention is assembled.

[0032] Figure 11 is a cross-sectional view of Figure 10 .

[0033] Figure 12Figure 4 is a schematic view showing the light emitting member of the light emitting accessory entering the channel of the speculum body and being guided and positioned by the tapered guiding segment when the light source assisted direct laryngoscope of the present application is assembled.

[0034] Figure 13 Figure 5 is a cross sectional view of the speculum body. Figure 12

[0035] Figure 14 Figure 6 is a schematic view showing the use of the light source assisted direct laryngoscope of the present application.

[0036] Figure 15 Figure 7 is a perspective exploded view showing the video laryngoscope combined with the speculum having guiding channel of the present application forming an indirect laryngoscope.

[0037] Figure 16 Figure 8 is a schematic view showing the camera of the video laryngoscope entering the channel of the speculum body and being guided and positioned by the tapered guiding segment when the indirect laryngoscope of the present application is assembled.

[0038] Figure 17 Figure 9 is a schematic view showing the use of the indirect laryngoscope of the present application.

[0039] Figure 18 Figure 10 is another schematic view showing the speculum having guiding channel of the present application, showing that the tapered guiding segment of the channel of the speculum body extends from the outer arc to the adjacent upper arc of the transparent barrier.

[0040] BRIEF DESCRIPTION OF DRAWINGS 1: Speculum body; 11: Channel; 111: Tapered guiding segment; 12: Transparent barrier; 13: Entrance; 14: Outer arc; 15: Inner arc; 16: Inner wall; 161: Upper wall; 162: Lower wall; 2: Handle; 21: Extension channel; 22: Opening; 3: Light emitting accessory; 31: Shell member; 32: Flexible tube member; 33: Light emitting member; 4: Video laryngoscope; 41: Handle bar; 42: Flexible endoscope cable; 43: Camera; C1: Outer circle; C2: Inner circle; D1: Gap; D2: Gap; D3: Gap; D4: Gap; P: Axis; P1: Extension line; θ: Angle; L1: Light source assisted direct laryngoscope; L2: Indirect laryngoscope. DETAILED DESCRIPTION

[0041] In summary, the main effects of the speculum having guiding channel of the present application are clearly shown in the following examples.

[0042] Please refer to Figure 1 and Figure 2 ​As shown, the speculum with the guiding channel of the embodiment of the present application comprises a speculum body 1 and a handle 2. The speculum body 1 extends in an arc shape and is hollow inside to form a channel 11, and one end of the speculum body 1 has a transparent barrier wall 12 to close the channel, and the other end has an entrance 13 to communicate with the channel 11, and the channel 11 has a tapered guiding section 111 adjacent to the transparent barrier wall 12, and the channel 11 of the embodiment is tapered from the entrance 13 to the tapered guiding section 111 adjacent to the transparent barrier wall 12. The handle 2 is combined with the other end of the speculum body 1, and the handle 2 is hollow to have an extension channel 21, and the extension channel 21 is communicated with the channel 11 from the entrance 13, and the handle 2 has an opening 22 at the end to communicate with the extension channel 21, and the handle 2 is combined perpendicularly with the speculum body 1, and the axis P of the handle 2 intersects with the extension line P1 of the transparent barrier wall 12, and the included angle θ is between 12 degrees and 14 degrees, and the included angle θ of the embodiment is 13 degrees.

[0043] As shown in Figure 2 , Figure 3 and Figure 4 , the speculum body 1 extends in an arc shape to have an outer arc 14 and an inner arc 15. The outer arc 14 and the inner arc 15 of the embodiment of the present application can be formed by two circles to be internally separated, and the outer arc 14 is formed by an outer circle C1, and the inner arc 15 is formed by an inner circle C2; or the outer arc 14 and the inner arc 15 can be formed by two intersecting circles, and the outer arc 14 is formed by an outer circle C1, and the inner arc 15 is formed by an inner circle C2, and such a circular structure can conform to the extension path of the oral cavity to the epiglottis, close to ergonomics, and avoid collision injury to the patient during use. The wall thickness of the speculum body 1 adjacent to the channel 11 of the embodiment is the same to constitute the aforementioned channel 11 which is tapered from the entrance 13 to the tapered guiding section 111 adjacent to the transparent barrier wall 12, thereby facilitating injection molding.

[0044] As shown in Figure 5 , the speculum of the embodiment of the present application is combined with a light emitting accessory 3 to become a light source assisted direct laryngoscope L1, and the light emitting accessory 3 has a shell member 31, a flexible tube member 32 extending from the shell member 31, and a light emitting member 33 arranged at the end of the flexible tube member 32.

[0045] As shown in Figure 6 and Figure 7 , the light emitting member 33 is extended into the extension channel 21 from the opening 22 of the handle 2, and is extended into the channel 11 through the entrance 13 of the channel 11 of the speculum body 1, and the channel 11 of the embodiment is the tapered guiding section 111 throughout, so that the entrance 13 has the largest diameter, and the light emitting member 33 has the largest clearance D1 with an inner wall 16 of the channel 11 to easily extend into the channel 11.Figure 8 and Figure 9 , Figure 10 and Figure 11 , as the light emitting member 33 gradually extends into the channel 11, the clearances D2, D3 between the light emitting member 33 and the inner wall 16 of the channel 11 gradually decrease, thus guiding the light emitting member 33. Referring to Figure 12 and Figure 13 , when the light emitting member 33 extends into abutment against the transparent barrier 12, the clearance D4 between the light emitting member 33 and the inner wall 16 adjacent to the channel 11 is between 0.08 mm and 0.12 mm, and in the present embodiment is 0.12 mm, thereby enabling the light emitting member 33 to be accurately positioned, and the shell member 31 is inserted into the extended channel 21 to secure the light emitting accessory 3. Since the flexible tube member 32 is mainly bent and deformed in the arc bending direction of the peep sheet body 1 when the light emitting member 33 extends into the channel 11 of the peep sheet body 1, the clearance D4 is the distance between the light emitting member 33 and the upper wall 161 and the lower wall 162 adjacent to the channel 11, particularly in the arc bending direction of the peep sheet body 1.

[0046] Referring to Figure 12 and Figure 14 , when the light source assisted direct laryngoscope L1 is used, the medical staff directly holds the handle 2, and according to the normal operation process, extends the peep sheet body 1 into the patient's throat to abut against the epiglottis and open the glottis. The light emitting member 33 is accurately positioned in the channel 11 by the guidance of the tapered guide section 111, and the included angle θ between the axis P of the handle 2 and the extension line of the transparent barrier 12 is 13 degrees (as shown in Figure 2 ), thereby controlling the irradiation direction of the light emitting member 33, so that the irradiation range of the light emitting member 33 can cover the entire epiglottis and glottis.

[0047] Referring to Figure 15 and Figure 16As shown, the laryngoscope blade of the present application is combined with a video laryngoscope 4 to become an indirect laryngoscope L2, which has a handle 41 and a flexible endoscope cable 42 extending from the handle 41, and a camera 43 disposed at the end of the flexible endoscope cable 42. The camera 43 is inserted into the extension channel 21 of the handle 2 from the opening 22 of the handle 2 and the channel 11 of the laryngoscope blade body 1 through the entrance 13 of the channel 11 in the same way as the assembly of the light emitting accessory 3, and the camera 43 is guided by the tapered guide section 111 in the channel 11 to extend to abut against the transparent barrier wall 12, the clearance between the camera 43 and the adjacent inner wall 16 of the channel 11 is between 0.08mm and 0.12mm, and the clearance of the present embodiment is 0.12mm, so that the camera 43 can be accurately positioned, and the handle 41 is embedded in the extension channel 21 to fix the video laryngoscope 4. Wherein, when the camera 43 is inserted into the channel 11 of the laryngoscope blade body 1, the flexible endoscope cable 42 will mainly be deformed by bending in the curved direction of the laryngoscope blade body 1, so the clearance is the distance between the camera 43 and the upper wall 161 and the lower wall 162 adjacent to the channel 11 in the curved direction of the laryngoscope blade body 1, that is, the upper wall 161 and the lower wall 162 of the channel 11.

[0048] As shown in Figure 16 and Figure 17 As shown, when the indirect laryngoscope L2 is used, the medical staff directly holds the handle 2, inserts the laryngoscope blade body 1 into the patient's throat to support the epiglottis and open the glottis according to the normal operation process, and the camera 43 is accurately positioned in the channel 11 by the tapered guide section 111, so that the camera 43 can cover the entire epiglottis and glottis in the shooting range.

[0049] As shown in Figure 18 As shown, another type of laryngoscope blade with a guide channel of the present application is provided, wherein the channel 11 of the laryngoscope blade body 1 is formed from the upward curved portion of the outer curved portion 14 to the transparent barrier wall 12 to form the tapered guide section 111. In this way, the light emitting part 33 of the light emitting accessory 3 or the camera 43 of the video laryngoscope 4 can also be accurately positioned.

[0050] The above description is only illustrative and not limiting, and those skilled in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope of the claims, but all will fall within the protection scope of the present application.

Claims

1. A laryngoscope blade having a guide channel for use in laryngoscopy, either as a light source assisted direct laryngoscope in combination with a light emitting accessory, or as an indirect laryngoscope in combination with a video laryngoscope, characterised in that, Comprising: A peephole body, extending in an arc shape, a channel is formed inside the peephole body, and one end of the peephole body has a transparent barrier wall closing the channel, the other end has an entrance communicating with the channel, the channel has a tapered guide segment adjacent to the transparent barrier wall; the peephole body has an outer arc and an inner arc, the outer arc and the inner arc are formed by two circles, the outer arc is formed by the outer circle, and the inner arc is formed by the inner circle, or the peephole body has an outer arc and an inner arc, the outer arc and the inner arc are formed by two intersecting circles, the outer arc is formed by the outer circle, and the inner arc is formed by the inner circle; The light emitting part of the light emitting accessory or the camera of the video laryngoscope extends into the channel from the entrance, and is guided by the tapered guide segment to the transparent barrier wall, when the light emitting part or the camera is on the transparent barrier wall, the gap between the light emitting part or the camera and the inner wall adjacent to the channel is between 0.08mm and 0.12mm, thereby accurately positioning the light emitting part or the camera, so that the illumination range or the shooting range can cover the entire epiglottis and glottis; A handle is combined at the other end of the peephole body, the handle is perpendicularly combined on the peephole body, the handle is hollow and has an extension channel, the extension channel communicates with the channel from the entrance, the end of the handle has an opening communicating with the extension channel, the axis of the handle intersects with the extension line of the transparent barrier wall, and the included angle is between 12 degrees and 14 degrees.

2. The speculum with guide channel of claim 1 wherein, The inner wall is an upper wall and a lower wall adjacent to the channel in the arc bending direction of the peephole body.

3. The speculum with guide channel of claim 1 wherein, The peephole body has the outer arc and the inner arc, and the channel is formed from the upper arc bending of the outer arc to the tapered guide segment adjacent to the transparent barrier wall.

4. The speculum with guide channel of claim 1 wherein, The channel is formed from the entrance to the tapered guide segment adjacent to the transparent barrier wall.

5. The speculum with guide channel of claim 1 wherein, The channel is formed from the entrance to the tapered guide segment adjacent to the transparent barrier wall, and the peephole body has the same wall thickness adjacent to the channel.

6. The speculum with guide channel of claim 1 wherein, The included angle is 13 degrees.

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