CN101360446A - Laryngoscope blade - Google Patents
Laryngoscope blade Download PDFInfo
- Publication number
- CN101360446A CN101360446A CNA2006800509778A CN200680050977A CN101360446A CN 101360446 A CN101360446 A CN 101360446A CN A2006800509778 A CNA2006800509778 A CN A2006800509778A CN 200680050977 A CN200680050977 A CN 200680050977A CN 101360446 A CN101360446 A CN 101360446A
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- laryngoscope blade
- optical element
- light
- face
- light source
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Abstract
A laryngoscope blade improves the transmission of light from the laryngoscope to enhance the amount of light reflected from an area of interest in a patient. The laryngoscope blade has a channel which extends at least partially though the blade and receives a light source. The channel has a substantially transparent end face which is situated towards the blade end and has an optical element adapted to reduce the ambient light signal from the light source in the channel.
Description
Technical field
The present invention relates to sheath type laryngoscope,, comprise disposable laryngoscope blade in particular to the laryngoscope blade that is used for described laryngoscope.
Background technology
Laryngoscope is the doctor is used for opening patient's air flue in the tracheal intubation process a apparatus.Use main points of laryngoscope to be, must can distinguish vocal cords and structures surrounding when inserting laryngoscope Shi doctor.In many cases, accomplish that this point is the face by the direct viewing patient,, perhaps pass through on laryngoscope blade or the middle photographing unit of settling, observe that position from screen from visually distinguishing the larynx district.
Usually, in the laryngoscope blade outside of non-once light source can be installed.In addition, some disposable laryngoscope blades comprise sheath type laryngoscope blade, have transparent part, and light penetrates patient's throat thus from end face.Light is intended to illuminate organizational structure, so that the doctor can see, perhaps so that imaging system can capture image.The advantage of mirror sheath is that protection imaging and/or light source do not contact the patient, thereby better prevents the cross infection between patient and the patient.Another advantage is that relatively costly photographing unit and/or light source form the reusable part of this apparatus, keep disposable mirror sheath partly not have electronic equipment and noble metal simultaneously, can reduce cost like this, the protection environment.
There is a problem in the light source that use is loaded on the sheath type laryngoscope blade, light must pass through the transparent substantially end face transmission of laryngoscope blade (or mirror sheath), may be reflected simultaneously or otherwise just reveal on the mirror sheath, cause the ambient light signal of pollution, perhaps scattered light.In addition, scattered light means that the not all light that comes out from light source all arrives the purpose position of patient's throat, thereby provides the signal of usefulness.
When use had the light source that propagates into than the more large-area large tracts of land illumination in purpose surround, this problem was just bad more.Radix Rumicis causes that light propagates into the mirror sheath, rather than directly effectively passes through the mirror sheath.In addition, the light at arrival re-set target position is diluted.Narrow beam light passes through the sheath window effectively, and scattering still less still often can not be given the large-area illumination of target site.
The illumination of using in order to observe imaging on the monitor externally to internal structure, the relevant issues that it brought are illuminations that light source produces circular area, as cone-shaped beam, this is not optimal for present this rectangle for non-circular monitor.Therefore, present system provides circular light spot in the framework of monitor, perhaps exceeds the more large-area aperture of framework illumination of monitor, and this just means can waste light to throw light on and does not appear at organizational structure on the monitor of observing usefulness.
Check the medical probe such as the laryngoscope blade of usefulness in the tissue, usually and other the instrument that will insert human body equally use together.In the example that uses laryngoscope blade, endotracheal tube enters its air flue through patient's vocal cords.This means that preferred mode is laryngoscope blade is set aside (the normally left side), so that provide the space to insert pipe.This means that image capturing and/or illuminator want the offset target position, therefore must tilt that this may increase complexity and cost, and often causes huger assembly program to target site.
Summary of the invention
Target of the present invention is to improve the operability of laryngoscope, improves the light quantity that reflects from patient's relevant position by promoting light in the propagation of laryngoscope.
According to a first aspect of the invention, provide a kind of laryngoscope blade that is used for sheath type laryngoscope here, this laryngoscope blade comprises:
Handle;
The sheet end; And
Passage, this passage extends through laryngoscope blade at least in part, is suitable for holding light source simultaneously, and this passage has the transparent substantially end face towards the sheet end, and this end face comprises the optical element that is used for reducing from the ambient light signal of the light source of passage.
The sheet end is the distal-most end with respect to handle.Also have, ambient light signal comprises any scattered light.
Preferably, laryngoscope blade also comprises opening.Advantageously, opening is located on or near handle.
Preferably, optical element is configured as and reduces the back-scattered light admission passage.
Preferably, end face comprises castellation, so that the position of emission light is positioned at before other parts of end face on the end face.
Preferably, optical element is enclosed by passage circle at least in part.
Preferably, optical element is suitable for making light beam to change direction.
Preferably, optical element is suitable for divergent beams.Perhaps, optical element is suitable for convergent beam.
Preferably, optical element comprises refracting means.
Preferably and advantageously, optical element is adapted to shape the beam of light so as the cross section of substantial rectangular.
Selectively be that optical element comprises prism.
Preferably, optical element is suitable for receiving narrow beam light, and makes beam divergence.
Preferably, optical element also comprises lens.
Selectively be that lens are concavees lens.
Selectively be that lens are convex lenss.
Preferably, optical element is suitable for absorbing and injects its lateral light.
Selectively be that optical element is suitable for injecting its lateral light.
Preferably, passage is suitable for holding photographing unit.
Preferably, passage is suitable for the light source of receiving optical fiber or Light-Emitting Diode.
Preferably, light source emits beam from transparent end face or near position.
Description of drawings
Only with reference to the accompanying drawings, describe the present invention now, comprise following accompanying drawing by example:
Fig. 1 is the perspective view of first embodiment of the invention.
Fig. 2 is the cross-sectional view of the embodiment among Fig. 1.
Fig. 3 is the cross-sectional view of the end face area of second embodiment of the invention.
Fig. 4 is the cross-sectional view of the end face area of third embodiment of the invention.
Fig. 5 is the cross-sectional view of the end face area of four embodiment of the invention.
Fig. 6 is the cross-sectional view of the end face area of fifth embodiment of the invention.
Fig. 7 a to 7e is the cross-sectional view of the embodiment alternative end faces among Fig. 1.
Fig. 8 a to 8c shows light source or image capture apparatus and its various optical elements.
Fig. 9 a to 9f shows alternative light source or image capture apparatus and its various optical elements and the effect of optical element; With
Figure 10 a and 10b show the cross-sectional view of embodiments of the invention combining optical element.
The specific embodiment
What Fig. 1 showed is laryngoscope blade 1, and this laryngoscope blade comprises opening 2, handle 3 and sheet end 5, and this handle 3 has connecting device 4 so that sheath type laryngoscope blade 1 is connected on the laryngoscope, and this sheet end 5 has the sheet tip 6.
Fig. 2 is the cross-sectional view of end face 7.End face comprises the optical element 11 that is used to receive from the light of light source 17.Optical element 11 comprises prism 15, and enclosed by gap or passage 13 boundaries, this gap or passage 13 separate the optical element 9 and second optical element 12, and this second optical element 12 is suitable for the reception light that (or other relevant position) reflects from the patient throat and light is propagated into photographing unit 19.
Among this embodiment of the present invention, prism 14 and the different refractions that produce in various degree of prism 15 owing to shape.
In the use, be provided with light source 17 and photographing unit 19 among first embodiment of the present invention.Light source 17 and photographing unit 19 are inserted in the passage 9, place or close end face 7.When use comprises the laryngoscope of sheath type laryngoscope blade 1 shown in Figure 1, open light source 17 and photographing unit 19, so that light may propagate into patient's throat, the signal that provides of reflected light can be presented on the position at laryngoscope blade place on the screen then.This allows the doctor can locate laryngoscope more accurately.
By change end face 7, the present invention has reduced from the direct spill and leakage of the light source light quantity (surround lighting) to photographing unit, and has increased the light quantity that reflects from patient's throat.In addition, prism 15 and 14 directions of correcting lightray propagation and reception.
In this embodiment, use spots localization that a spot of castellation omits light from end face 7 before the position that reflected light is received by photographing unit 19.In addition, optical element 11 is enclosed by gap or passage 13 boundaries, and this gap or passage 13 reduce the level that light is propagated previously from photographing unit.
That Fig. 3 shows is second embodiment of the present invention, and wherein end face 21 comprises castellation 23, narrow light source 27 and photographing unit 19.In this embodiment, narrow light source 27 is provided with the optical element 25 that comprises lens 26, and these lens 26 are dispersed narrow beam light and made the light quantity maximization at the relevant position of injecting the patient.
Light source places photographing unit 19 fronts and uses provides the light source of thin or narrow beam light to combine, and reduces the amount of surround lighting and the back-scattered light of injecting photographing unit, increases the catoptrical amount of injecting photographing unit 19 simultaneously.
That Fig. 4 shows is the 3rd embodiment of the present invention, and wherein end face 31 comprises castellation 33, and in the present embodiment, this castellation has light source to place before other parts of end face, but is the center at end face basically.Photographing unit does not appear among this embodiment of the present invention.
This embodiment of the present invention is designed to without photographing unit, directly the observation of vision is carried out at patient's relevant position.Have been found that when the doctor attempts the position of direct observation laryngoscope blade the problem of surround lighting and/or back-scattered light is very important, because surround lighting makes correct discriminating throat and vocal cords position difficult more.Be displaced to by position before other parts of end face 31 light source, the level of the surround lighting that the minimizing doctor watches, and improve and observe.
That Fig. 5 shows is the 4th embodiment of the present invention, and wherein end face 41 is flat basically except optical element 45 occurring.End face is provided with and prevents the light absorption barrier 43 of light from light source admission passage 9.Optical element 45 places the front of light source, is used to turn to and/or expand the light beam that penetrates from end face 41.
In additional embodiments of the present invention, light absorption barrier 43 can substitute with the barrier of internal reflection light, and so light can not propagate into passage, but retroeflection propagates into the patient again to end face.
What Fig. 6 showed is an alternative embodiment of the invention, and wherein end face 51 is provided with passage or gap 53, and convex lens 55 places light source front 61, and the photographing unit prism places photographing unit 19 fronts.
In the embodiments of the invention, influence the surround lighting of photographing unit 19 signals reception and the level of scattered light by using convex lens to reduce, convex lens is with the focus 60 of convergence of rays to end face 51 back, and beam divergence makes the light quantity of injecting the relevant position of patient maximize then.
Be noted that the curvature of lens and therefore required convergence or degree of divergence be based on distance between the end face 51 and the sheet tip 6 (Fig. 1), together with estimating to the distance patient's vocal cords of estimating from the sheet tip 6.
What Fig. 7 a to 7e showed is the cross-sectional view of alternative end faces 107 (corresponding with the end face 7 of Fig. 1).This end face comprises the optical element 111 that is used to receive and propagate from light source 121.Optical element 111 is separated into two parts, to prevent by end face 107 scattering taking place from the light of light source 121.
Among Fig. 7 a, place the image capture apparatus front to finish separation light source 121 by castellation 111.Among Fig. 7 b, finish separation by resolution element 112, and in Fig. 7 c, finish separation by air gap separator 113.
In Fig. 7 d and 7e, finish in conjunction with castellation 111 and resolution element 112 or air gap separator 113 respectively and separate.
Fig. 8 a and Fig. 8 b show light source or image capture apparatus 119, and this light source or image capture apparatus 119 are configured to propagate or receive light by optical element 118.Among Fig. 8 a, when being used for illumination target 120, the natural light beam 114 of propagating or receiving is narrower than optimal light beam 115.Among Fig. 8 b, the natural light beam 116 of propagating or receiving is wideer than optimal light beam 115.Among Fig. 8 a, most of area of target 120 does not have illuminated or imaging.Among Fig. 8 b, the illumination of target 120 or the efficient of imaging are low, because most illumination or imaging drop on outside the target 120.
In order to obtain optimal light beam 115, propagate into or receive from the shape and the size of the light beam 114,116 of target 120 and can be regulated by optical element 118, its form that may adopt is a kind of lens shown in Fig. 8 c.These lens may cause that light beam is tending towards assembling or dispersing towards optimal light beam 115.
Fig. 9 a and Fig. 9 b show alternative light source or image capture apparatus 119, and this light source or image capture apparatus 119 are configured to propagate or receive light by optical element 118.In this example, target 120 relative light sources or image capture apparatus 119 are offset.
Among Fig. 9 a, the optimal light beam 117 that the natural light beam 114 ratio deviation targets 120 of propagating or receiving require is narrower.Among Fig. 9 b, the optimal light beam that the natural light beam 116 ratio deviation targets 120 of propagating or receiving require is wideer.
In order to obtain optimal light beam 117, propagate into or receive from the shape and the size of the light beam 114,116 of target 120 and can be regulated by optical element 118, its form that may adopt is the prism and the lens of or combination, those shown in Fig. 9 c.
Fig. 9 d shows the effect of narrow natural light beam 114 with regard to offset target 120, and Fig. 9 e shows the effect of wide natural light beam 116 with regard to offset target 120 simultaneously.Most of area of offset target 120 is not by narrow natural light beam 114 illumination or imagings, and importantly the very important zone at the center of offset target does not have illuminated or imaging.The illumination of 116 pairs of offset target 120 of wide natural light beam or the efficient of imaging are low, because most illumination or imaging drop on outside the target 120, and the important area of offset target does not have illuminated or imaging.
Fig. 9 f shows the result who uses optical element 118 to correct nature light beam 114,116, and this optical element may be selected from these elements shown in Fig. 9 c or their combination.To moulding of natural light beam 114,116, obtain rectangular shape substantially, the result is a more efficient use light.
Figure 10 a and Figure 10 b show the cross-sectional view of end face in the embodiments of the invention, simultaneously in conjunction with the optical element that improves the imaging of offset target 120.
Optical element that image capturing is used 124 adopts prismatical form, with from offset target 120 collected light.Shape and size that the optical element 123 that light source is used adopts lens and prismatical form to regulate light territory 125 guide it to arrive offset target 120.Among Figure 10 b, optical element 123,124 is further separated by air gap separator, and the light scatter that further reduces from light source 121 arrives image capture apparatus 122.
The present invention is by reducing photographing unit receives or the doctor directly receives the scattered light or the amount of surround lighting when observing patient's relevant position, provide in the sheath type laryngoscope and relate to the improvement of sheath type laryngoscope.The present invention also assists to correct the direction and the shape of light beam.
Preferred embodiment is by the light barrier of the window region of mirror sheath and/or castellation, and light source and image capture apparatus are separated.Among the present invention, correct illumination direction and shape, so that the scope of organization of illumination expection from the light source in the mirror sheath.In the preferred embodiment, this is to realize by the prism and the dihedral lens that project rectangular light beam in certain angle, to be fit to image capture apparatus or display monitor central monitoring system.
Under the prerequisite that does not break away from the scope of the invention that defines in the claims, can be in the middle of this in conjunction with improving and revising.
Claims (23)
1. laryngoscope blade comprises:
Handle;
The sheet end; And
Passage, described passage extends through described laryngoscope blade at least in part;
Wherein, described passage is suitable for holding light source, described passage has the transparent substantially end face towards described end, and light is propagated by described end face, and described end face comprises the optical element that is suitable for reducing from the ambient light signal of the described light source in the described passage.
2. laryngoscope blade as claimed in claim 1 is characterized in that described laryngoscope blade also comprises opening.
3. laryngoscope blade as claimed in claim 2 is characterized in that described opening is located on or near described handle.
4. as each described laryngoscope blade among the claim 1-3, it is characterized in that described optical element is configured as the backscatter that reduces the light that propagates into described passage.
5. as each described laryngoscope blade in the above-mentioned claim, it is characterized in that described end face comprises castellation, so that the position of the described end face of light penetration is positioned at the front of the other parts of described end face.
6. as each described laryngoscope blade in the above-mentioned claim, it is characterized in that described optical element is enclosed by passage circle at least in part.
7. as each described laryngoscope blade in the above-mentioned claim, it is characterized in that described optical element is suitable for making transillumination to change direction.
8. laryngoscope blade as claimed in claim 7 is characterized in that described optical element is suitable for dispersing transillumination.
9. laryngoscope blade as claimed in claim 7 is characterized in that described optical element is suitable for assembling transillumination.
10. as each described laryngoscope blade in the above-mentioned claim, it is characterized in that described optical element comprises refracting means.
11., it is characterized in that described optical element is suitable for making transillumination to be configured as orthogonal substantially cross section as each described laryngoscope blade in the above-mentioned claim.
12., it is characterized in that described optical element comprises prism as each described laryngoscope blade in the above-mentioned claim.
13., it is characterized in that described optical element is suitable for receiving narrow beam light, and make beam divergence as each described laryngoscope blade in the above-mentioned claim.
14., it is characterized in that described optical element also comprises lens as each described laryngoscope blade in the above-mentioned claim.
15. laryngoscope blade as claimed in claim 14 is characterized in that, described lens are concavees lens.
16. laryngoscope blade as claimed in claim 14 is characterized in that, described lens are convex lenss.
17., it is characterized in that described optical element is suitable for absorbing injects its lateral light as each described laryngoscope blade in the above-mentioned claim.
18., it is characterized in that described optical element is suitable for injecting its lateral light as each described laryngoscope blade among the claim 1-16.
19., it is characterized in that described passage also is suitable for holding photographing unit as each described laryngoscope blade in the above-mentioned claim.
20., it is characterized in that described passage is suitable for holding light source as each described laryngoscope blade in the above-mentioned claim.
21. laryngoscope blade as claimed in claim 20 is characterized in that, described light source comprises optical fiber source.
22. laryngoscope blade as claimed in claim 20 is characterized in that, described light source comprises light emitting diode.
23., it is characterized in that described light source emits beam from described transparent end face or near position as each described laryngoscope blade among the claim 20-22.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377666.3A CN105125163A (en) | 2005-12-09 | 2006-12-11 | Laryngoscope blade |
| CN201510823312.7A CN105326469A (en) | 2005-12-09 | 2006-12-11 | Laryngoscope blade |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0525095.6 | 2005-12-09 | ||
| GB0525095A GB0525095D0 (en) | 2005-12-09 | 2005-12-09 | Further improvements in and relating to light transmission in laryngoscope blades |
| GB0525085.7 | 2005-12-09 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510823312.7A Division CN105326469A (en) | 2005-12-09 | 2006-12-11 | Laryngoscope blade |
| CN201510377666.3A Division CN105125163A (en) | 2005-12-09 | 2006-12-11 | Laryngoscope blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101360446A true CN101360446A (en) | 2009-02-04 |
Family
ID=35735823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800509778A Pending CN101360446A (en) | 2005-12-09 | 2006-12-11 | Laryngoscope blade |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101360446A (en) |
| GB (1) | GB0525095D0 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102481086A (en) * | 2009-04-14 | 2012-05-30 | 韦拉索恩股份有限公司 | Video laryngoscope system and devices |
| CN102573608A (en) * | 2009-08-28 | 2012-07-11 | 印度洋医药有限公司 | Laryngoscope |
| CN102670160A (en) * | 2012-06-07 | 2012-09-19 | 台州瀚创医疗器械科技有限公司 | Glidescope |
| US9078615B2 (en) | 2008-10-30 | 2015-07-14 | Indian Ocean Medical Inc. | Guiding device for use with laryngoscope |
| CN104939873A (en) * | 2015-07-01 | 2015-09-30 | 管永昱 | Medical oral and maxillofacial retractor |
| US9861270B2 (en) | 2008-10-30 | 2018-01-09 | Indian Ocean Medical Inc. | Guiding device for use with laryngoscope |
-
2005
- 2005-12-09 GB GB0525095A patent/GB0525095D0/en not_active Ceased
-
2006
- 2006-12-11 CN CNA2006800509778A patent/CN101360446A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9078615B2 (en) | 2008-10-30 | 2015-07-14 | Indian Ocean Medical Inc. | Guiding device for use with laryngoscope |
| US9861270B2 (en) | 2008-10-30 | 2018-01-09 | Indian Ocean Medical Inc. | Guiding device for use with laryngoscope |
| US10349822B2 (en) | 2008-10-30 | 2019-07-16 | Indian Ocean Medical Inc. | Guiding device for use with laryngoscope |
| CN102481086A (en) * | 2009-04-14 | 2012-05-30 | 韦拉索恩股份有限公司 | Video laryngoscope system and devices |
| CN102573608A (en) * | 2009-08-28 | 2012-07-11 | 印度洋医药有限公司 | Laryngoscope |
| US9332896B2 (en) | 2009-08-28 | 2016-05-10 | Indian Ocean Medical Inc. | Laryngoscope |
| CN102573608B (en) * | 2009-08-28 | 2016-06-29 | 印度洋医药有限公司 | Laryngoscope |
| CN102670160A (en) * | 2012-06-07 | 2012-09-19 | 台州瀚创医疗器械科技有限公司 | Glidescope |
| CN104939873A (en) * | 2015-07-01 | 2015-09-30 | 管永昱 | Medical oral and maxillofacial retractor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0525095D0 (en) | 2006-01-18 |
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| PB01 | Publication | ||
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Application publication date: 20090204 |