CA1174135A - Laryngoscope and improved blade therefor - Google Patents
Laryngoscope and improved blade thereforInfo
- Publication number
- CA1174135A CA1174135A CA000403081A CA403081A CA1174135A CA 1174135 A CA1174135 A CA 1174135A CA 000403081 A CA000403081 A CA 000403081A CA 403081 A CA403081 A CA 403081A CA 1174135 A CA1174135 A CA 1174135A
- Authority
- CA
- Canada
- Prior art keywords
- housing
- blade
- heel
- bundle
- optical fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/267—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the respiratory tract, e.g. laryngoscopes, bronchoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Otolaryngology (AREA)
- Physiology (AREA)
- Pulmonology (AREA)
- Endoscopes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A laryngoscope blade is described with a light guide means extending between a heel of the blade and an outlet point located between the proximal and distal ends of the blade. To simplify manufacture, the blade with its heel is injection-molded from a plastics material, after the light guide means has been inserted in the injection mold.
A laryngoscope blade is described with a light guide means extending between a heel of the blade and an outlet point located between the proximal and distal ends of the blade. To simplify manufacture, the blade with its heel is injection-molded from a plastics material, after the light guide means has been inserted in the injection mold.
Description
Laryngoscope and improved blade therefor Technical Field The invention relates to a laryngoscope, and in particular to a blade for a laryngoscope, which blade has a light guide means extending between a heel of the blade and an outlet point located between the proximal and distal ends of the blade.
Discussion of Prior Art A laryngoscope, the blade of which consists of stain-less steel and in which a connecting cable runs from the heel of the blade to a bulb holder which is located between the proximal and distal ends of the blade is already known from the pamphlet Med 0773 DE published by Heine Optotechnik GmbH & Co. KGo of Hersching, West Germany. The cable is contained in a channel which is drilled after the blade has been manufactured or which is made by soldering a U-shaped part forming the channel onto the remainder of the blade. The manufacture of this blade is relatively complicated and thus expensive.
A laryngoscope blade is also already known in which a light guide essentially consisting of a bundle of opti-cal fibers is provided between the heel and an outlet point located between the proximal and distal ends of the blade. Admittedly, this blade avoids the risk of the patient suffering burns due to contact with the bulb and is easier to clean and to sterilize in an autoclave.
However, it is relatively difficult, and hence, expensive to produce.
Laryngoscopes which are made completely or partially of a plastics material are also known but these are intended for use only once and are consequently of very simple construction and contain a light guide in the form of a solid rod and which, during examination, provides rather poor illumination of the area to b ~7~135 examined.
It is therefore an object of the present invention to provide a laryngoscope blade which can be easily pro-duced and which permits the best possible illumination and cleaning, as well as sterilizing in an autoclave.
According to the invention, this object is achieved when the blade together with the heel intended for fixing the blade to a handle, is injection-molded from a plastics material a~ter a light guide means has been inserted into the injection mold. In practice, a suitable light guide means is first located in an empty injection mold in the desired position required in the final blade, the mold is closed and the plastics material, in flowable form, is injected into the closed mold. Since the light guide means can be supported in the injection mold by simple means, this results in simple and economical prod-uction of the laryngoscope blade and hence of the entire laryngoscope. Preferably, the plastics material selected is a fiber-reinforced (e.g. glass or plastics fiber reinforced) material, the softening point of which is sufficiently high to withstand, without damage, the temperatures prevailing in a sterilizing autoclave.
The design of the blade as a plastics molding has the further advantage that the blade is virtually non-dazzling to the user and that damage to the teeth ofa patient being examined, which can occur in the case of spasms, is avoided with certainty. These two disadvan-tages are virtually unavoidable in the case of the known laryngoscope blades made from stainless steel.
The light guide means preferably comprises a housing which is arranged between the heel and the light outlet point of the blade and into which housing a bundle of optical fibers has been inserted.
117~135 This results not only in a further simplification of the manufacturirlg process, since it is only r~ecessary to insert the bundle of optical fibers into the housing, to seal the housing if necessary and then to insert the housing into the injection mold, but it also allows virtu-ally any desired change in cross-sectional shape of the bundle betweerl its two ends, without the bundle having to be preformed in a separate operation.
Preferably, each end of the bundle of optical fibers is respectively mour~ted in a holder which holders are, in turn, located at the appropriate positions in the wall of the housing to protrude somewhat beyond the latter.
This gives secure and simple mounting of the bundle of optical fibers in the housing and allows the light guide means, comprising the housing and the bundle of fibers, to be fixed accurately and reliably in the injec-tion mold.
To ensure secure and simpler mounting of the housing in the injection mold, it is possible to mold projections onto the outside of the housing for holding the housing in the correct position in the injection mold.
The housing receiving the bundle of optical fibers preferably comprises two parts cemented together. The holders for mounting the ends of the bundle can each be provided with a collar which locates in a respective groove in an appropriate orifice in one of the housing parts so that the holders can be securely mounted in the said one part of the housing before the other part is applied thereto.
To pr~vent the plastics material, which enters the injection mold during the injection molding of the blade, 117~135 from penetrating into the housing and damaging the bundle of optica~ fibers, the voids in the housing, remaining after the bundle is located therein, are preferably filled (e.g. with a plastics material), so that it is a closed and fully filled housing which is embedded in the blade.
Alternatively, one or both parts of the housing can be provided with supports, for example conical, pyramidal or rib-like supports, which coact with the other part in order to give the housing adequate strength to with-stand the pressures exerted on it during the injectionmolding and thereby prevent damage to the bundle of fibers either during injection or during the subsequent curing of the injt?cted plastics material.
The light guide means can also comprise a tubular member (e.g. a metallic tube) into which the bundle of optical fibers is inserted. In this case, the fibers of the bundle can be cemented at least to the opposite ends of the tubular member so that the latter act as the holders. Preferably, however, separate holders are provided one at each end of the bundle and these holders are in turn fixed (e.g- cemented or soldered) into the ends of the tubular member.
Brief Description of the Drawings Ont? embodiment of laryngoscope blade will now be described, by way of example, with referenct? to the accom-panying drawings, in which:-Figuré 1 is a perspective view of the completelaryngoscope blade, Figure 2 is a longitudinal St?C tion of the blade, Figure 3 is a partially sectioned end view of the blade, and Figure 4 is a schematic sectional view of a ball il74135 cage located in the heel of the blade.
Descriptiorl of Preferred Embodimerlt The laryngoscope blade 1 shown in Figure 1 has an upper surface 2 which serves as a support for the teeth of a patient. The lower surface of a lower arm 3 of the blade serves to hold the tongue of the patient out of the way, and the arm 3 is connected via a web 4 to the upper surface 2. The proximal end of the web 4 houses a light guide means 5 (see Figures 2 and 3).
When the blade 1 has been introduced into the mouth of a patient, the channel defined by the web 4, the lower arm 3 and the surrounding pharynx of the patient, serves as a guide for introducing an intubation catheter into the trachea of the patient. A heel 6, which permits an easy clip-on connection to a handle of the laryngoscope (not shown) is molded onto the blade 1 at the proximal end. As shown in greater detail in Figure 2, the light guide means 5 extends from the lower surface of the heel 6 up to an outlet point 7 located between the proximal and distal ends of the blade 1- An opening is formed in the web 4 forwardly of the outlet point 7.
The light guide means 5 consists of a housirlg or box 8 and a bundle 9 of optical fibers. The box 8 is formed from a first part 10 and a lid 11. The first part 10 and the lid 11 are secured to one another by cement or by means of a suitable snap connection. One or more supports 12, the or each consisting of a rib or stud of conical cross-section is/are molded integrally with the first part 10. At the proximal and distal ends of the box 8, the bundle 9 of fibers issecured in place by means of annular holders 13 and 14, respectively.
As shown in Figures 2 and 3, the cross-section of the bundle 9 changes from circular at the proximal erld 1~74135 (i.e. holder 13 is of circular cross-Sectiorl) to oval at the distal elld (i.e. holder 14 is of oval cross-sectiorl) During manufacture, the bundle 9 of optical fibers is first threaded into the holders 13 and 14, which are then inserted into grooved recesses in the end walls of the first part 10, annular webs molded onto the holders locating in the grooves and ensuring a positive connection between the holders 13, 14 and the first part 10~ Between the holders, the fibers of the bundle 9 are disposed freely, much in the manner of a curved strand of hair.
The lid 11 of the box 8 is then placed upon the first part 10 and joined thereto, for example by cementing.
The fibers of the bundle 9 which protrude beyond the holders 13 and 14 are then ground and polished to ensure good transmission properties for the light guide means and ensure that a high proportion of the light entering the heel 6 from the handle, exits from the outlet point 7. The lid 11 and the first part 10 of the light guide means 5 can be provided with outwardly extending projec-tions or studs (not shown), which further improve the ease and accuracy of mounting the light guide means 5 in the injection mold.
After the light guide means 5 has been inserted into the injection mold, the latter is closed with the holders 13 and 14 serving to seal the injection mold.
During injection of the plastics material into the mold, the support(s) 12 prevent(s) the box 8 collapsing, thereby preventing the plastics material from penetrating into the interior of the box 8 and damaging the fibers of the bundle 9 during or after the high pressure injection.
Apart from possible minor final treatments, the blad~
1 is fully manufactured wherl it is removed from the mold after the plastics material has hardened.
117~135 In ~he preferred embodimerlt of the blade illustrated, the heel 6 of the blade 1 is prcvided with a ball cage wh,ch passes through the heel transversely to the longitudinal axis of the blade 1. The ball cage 15 (see Figure 4) consists of a sleeve 16 which, at its ends, is provlded with constrictions, so that two balls 17, located in the sleeve 16 and each having an external diameter which is smaller than the internal diameter of the sleeve 16, are held in the sleeve 16 in such a way that they project somewhat beyond the ends of the sleeve 16. The balls 17 are urged apart by means of a helical spring 18. Prior to the injection molding of the blade 1, the ball cage 15 is positioned in the mold in such a way that, when the blade is removed from the mold, the balls 17 project beyond the outer contour of the heel 6 (see Figures 2 and 3). These balls 17 serve to removably lock the blade 1 on the handle of the laryngoscope.
As Figure 2 also shows, the heel 6 of the blade 1 is provided with a recess, which serves to hook the blade 1 onto a pin (not shown) of the handle. In this recess, a stud 19 is provided, which is integrally formed on the heel 6 and which, when the blade 1 is pushed over the pin, snaps over the latter and then results in a secure mounting of the blade 1 on the handle. More than one stud 19 can be provided and these can be located side by side and/or on opposite sides of the recess.
Discussion of Prior Art A laryngoscope, the blade of which consists of stain-less steel and in which a connecting cable runs from the heel of the blade to a bulb holder which is located between the proximal and distal ends of the blade is already known from the pamphlet Med 0773 DE published by Heine Optotechnik GmbH & Co. KGo of Hersching, West Germany. The cable is contained in a channel which is drilled after the blade has been manufactured or which is made by soldering a U-shaped part forming the channel onto the remainder of the blade. The manufacture of this blade is relatively complicated and thus expensive.
A laryngoscope blade is also already known in which a light guide essentially consisting of a bundle of opti-cal fibers is provided between the heel and an outlet point located between the proximal and distal ends of the blade. Admittedly, this blade avoids the risk of the patient suffering burns due to contact with the bulb and is easier to clean and to sterilize in an autoclave.
However, it is relatively difficult, and hence, expensive to produce.
Laryngoscopes which are made completely or partially of a plastics material are also known but these are intended for use only once and are consequently of very simple construction and contain a light guide in the form of a solid rod and which, during examination, provides rather poor illumination of the area to b ~7~135 examined.
It is therefore an object of the present invention to provide a laryngoscope blade which can be easily pro-duced and which permits the best possible illumination and cleaning, as well as sterilizing in an autoclave.
According to the invention, this object is achieved when the blade together with the heel intended for fixing the blade to a handle, is injection-molded from a plastics material a~ter a light guide means has been inserted into the injection mold. In practice, a suitable light guide means is first located in an empty injection mold in the desired position required in the final blade, the mold is closed and the plastics material, in flowable form, is injected into the closed mold. Since the light guide means can be supported in the injection mold by simple means, this results in simple and economical prod-uction of the laryngoscope blade and hence of the entire laryngoscope. Preferably, the plastics material selected is a fiber-reinforced (e.g. glass or plastics fiber reinforced) material, the softening point of which is sufficiently high to withstand, without damage, the temperatures prevailing in a sterilizing autoclave.
The design of the blade as a plastics molding has the further advantage that the blade is virtually non-dazzling to the user and that damage to the teeth ofa patient being examined, which can occur in the case of spasms, is avoided with certainty. These two disadvan-tages are virtually unavoidable in the case of the known laryngoscope blades made from stainless steel.
The light guide means preferably comprises a housing which is arranged between the heel and the light outlet point of the blade and into which housing a bundle of optical fibers has been inserted.
117~135 This results not only in a further simplification of the manufacturirlg process, since it is only r~ecessary to insert the bundle of optical fibers into the housing, to seal the housing if necessary and then to insert the housing into the injection mold, but it also allows virtu-ally any desired change in cross-sectional shape of the bundle betweerl its two ends, without the bundle having to be preformed in a separate operation.
Preferably, each end of the bundle of optical fibers is respectively mour~ted in a holder which holders are, in turn, located at the appropriate positions in the wall of the housing to protrude somewhat beyond the latter.
This gives secure and simple mounting of the bundle of optical fibers in the housing and allows the light guide means, comprising the housing and the bundle of fibers, to be fixed accurately and reliably in the injec-tion mold.
To ensure secure and simpler mounting of the housing in the injection mold, it is possible to mold projections onto the outside of the housing for holding the housing in the correct position in the injection mold.
The housing receiving the bundle of optical fibers preferably comprises two parts cemented together. The holders for mounting the ends of the bundle can each be provided with a collar which locates in a respective groove in an appropriate orifice in one of the housing parts so that the holders can be securely mounted in the said one part of the housing before the other part is applied thereto.
To pr~vent the plastics material, which enters the injection mold during the injection molding of the blade, 117~135 from penetrating into the housing and damaging the bundle of optica~ fibers, the voids in the housing, remaining after the bundle is located therein, are preferably filled (e.g. with a plastics material), so that it is a closed and fully filled housing which is embedded in the blade.
Alternatively, one or both parts of the housing can be provided with supports, for example conical, pyramidal or rib-like supports, which coact with the other part in order to give the housing adequate strength to with-stand the pressures exerted on it during the injectionmolding and thereby prevent damage to the bundle of fibers either during injection or during the subsequent curing of the injt?cted plastics material.
The light guide means can also comprise a tubular member (e.g. a metallic tube) into which the bundle of optical fibers is inserted. In this case, the fibers of the bundle can be cemented at least to the opposite ends of the tubular member so that the latter act as the holders. Preferably, however, separate holders are provided one at each end of the bundle and these holders are in turn fixed (e.g- cemented or soldered) into the ends of the tubular member.
Brief Description of the Drawings Ont? embodiment of laryngoscope blade will now be described, by way of example, with referenct? to the accom-panying drawings, in which:-Figuré 1 is a perspective view of the completelaryngoscope blade, Figure 2 is a longitudinal St?C tion of the blade, Figure 3 is a partially sectioned end view of the blade, and Figure 4 is a schematic sectional view of a ball il74135 cage located in the heel of the blade.
Descriptiorl of Preferred Embodimerlt The laryngoscope blade 1 shown in Figure 1 has an upper surface 2 which serves as a support for the teeth of a patient. The lower surface of a lower arm 3 of the blade serves to hold the tongue of the patient out of the way, and the arm 3 is connected via a web 4 to the upper surface 2. The proximal end of the web 4 houses a light guide means 5 (see Figures 2 and 3).
When the blade 1 has been introduced into the mouth of a patient, the channel defined by the web 4, the lower arm 3 and the surrounding pharynx of the patient, serves as a guide for introducing an intubation catheter into the trachea of the patient. A heel 6, which permits an easy clip-on connection to a handle of the laryngoscope (not shown) is molded onto the blade 1 at the proximal end. As shown in greater detail in Figure 2, the light guide means 5 extends from the lower surface of the heel 6 up to an outlet point 7 located between the proximal and distal ends of the blade 1- An opening is formed in the web 4 forwardly of the outlet point 7.
The light guide means 5 consists of a housirlg or box 8 and a bundle 9 of optical fibers. The box 8 is formed from a first part 10 and a lid 11. The first part 10 and the lid 11 are secured to one another by cement or by means of a suitable snap connection. One or more supports 12, the or each consisting of a rib or stud of conical cross-section is/are molded integrally with the first part 10. At the proximal and distal ends of the box 8, the bundle 9 of fibers issecured in place by means of annular holders 13 and 14, respectively.
As shown in Figures 2 and 3, the cross-section of the bundle 9 changes from circular at the proximal erld 1~74135 (i.e. holder 13 is of circular cross-Sectiorl) to oval at the distal elld (i.e. holder 14 is of oval cross-sectiorl) During manufacture, the bundle 9 of optical fibers is first threaded into the holders 13 and 14, which are then inserted into grooved recesses in the end walls of the first part 10, annular webs molded onto the holders locating in the grooves and ensuring a positive connection between the holders 13, 14 and the first part 10~ Between the holders, the fibers of the bundle 9 are disposed freely, much in the manner of a curved strand of hair.
The lid 11 of the box 8 is then placed upon the first part 10 and joined thereto, for example by cementing.
The fibers of the bundle 9 which protrude beyond the holders 13 and 14 are then ground and polished to ensure good transmission properties for the light guide means and ensure that a high proportion of the light entering the heel 6 from the handle, exits from the outlet point 7. The lid 11 and the first part 10 of the light guide means 5 can be provided with outwardly extending projec-tions or studs (not shown), which further improve the ease and accuracy of mounting the light guide means 5 in the injection mold.
After the light guide means 5 has been inserted into the injection mold, the latter is closed with the holders 13 and 14 serving to seal the injection mold.
During injection of the plastics material into the mold, the support(s) 12 prevent(s) the box 8 collapsing, thereby preventing the plastics material from penetrating into the interior of the box 8 and damaging the fibers of the bundle 9 during or after the high pressure injection.
Apart from possible minor final treatments, the blad~
1 is fully manufactured wherl it is removed from the mold after the plastics material has hardened.
117~135 In ~he preferred embodimerlt of the blade illustrated, the heel 6 of the blade 1 is prcvided with a ball cage wh,ch passes through the heel transversely to the longitudinal axis of the blade 1. The ball cage 15 (see Figure 4) consists of a sleeve 16 which, at its ends, is provlded with constrictions, so that two balls 17, located in the sleeve 16 and each having an external diameter which is smaller than the internal diameter of the sleeve 16, are held in the sleeve 16 in such a way that they project somewhat beyond the ends of the sleeve 16. The balls 17 are urged apart by means of a helical spring 18. Prior to the injection molding of the blade 1, the ball cage 15 is positioned in the mold in such a way that, when the blade is removed from the mold, the balls 17 project beyond the outer contour of the heel 6 (see Figures 2 and 3). These balls 17 serve to removably lock the blade 1 on the handle of the laryngoscope.
As Figure 2 also shows, the heel 6 of the blade 1 is provided with a recess, which serves to hook the blade 1 onto a pin (not shown) of the handle. In this recess, a stud 19 is provided, which is integrally formed on the heel 6 and which, when the blade 1 is pushed over the pin, snaps over the latter and then results in a secure mounting of the blade 1 on the handle. More than one stud 19 can be provided and these can be located side by side and/or on opposite sides of the recess.
Claims (8)
1. A laryngoscope blade formed from an injection molded mass of plastics material comprising a proximal end, a distal end, an outlet point located between said proximal and distal ends, a heel at said proximal end, a housing located within said laryngoscope blade and extending between said heel and said outlet point, and a bundle of optical fibers located within said housing and extending between said heel and said outlet point whereby said housing serves to protect said optical fibers during injection molding of said laryngoscope blade.
2. Apparatus as in claim 1 which further comprises a pair of holders each adapted to receive one end of said bundle of optical fibers, each of said holders adapted to be mounted in opposite ends of said housing and to protrude beyond their respective opposite ends of said housing.
3. Apparatus as in claim l in which said housing comprises a box portion and a lid portion secured to said box portion.
4. Apparatus as in claim 3 which further includes plastics material placed so as to fill voids created in said housing after placement of said bundle of optical fibers therein.
5. Apparatus as in claim 4 which further includes support means integrally formed within said housing for spacing said lid and said box portion from each other.
6. Apparatus as in claim 5 which further comprises projections extending from the exterior portion of said housing for maintaining said housing in position in an injection mold.
7. A laryngoscope blade formed from an injection molded mass of plastics material comprising a proximal end, a distal end, an outlet point located between said proximal and distal ends, a heel at said proximal end, a tubular member located within said laryngoscope blade and extending between said heel and said outlet point and a bundle of optical fibers located within said tubular member and extending between said heel and said outlet point whereby said tubular member serves to protect said optical fibers during injection molding of said laryngoscope blade.
8. Apparatus as in claim 7 which further comprises a pair of holders each adapted to receive one end of said bundle of optical fibers, each of said holders adapted to be mounted in opposite ends of said tubular member and to protrude beyond their respective opposite ends of said tubular member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3119726.4-35 | 1981-05-18 | ||
| DE19813119726 DE3119726C2 (en) | 1981-05-18 | 1981-05-18 | Laryngoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1174135A true CA1174135A (en) | 1984-09-11 |
Family
ID=6132601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000403081A Expired CA1174135A (en) | 1981-05-18 | 1982-05-17 | Laryngoscope and improved blade therefor |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1174135A (en) |
| DE (1) | DE3119726C2 (en) |
| FR (1) | FR2505645B1 (en) |
| GB (1) | GB2102679B (en) |
| IL (1) | IL65797A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317831A1 (en) * | 1983-05-17 | 1984-11-22 | Gustav Müller GmbH & Co KG, 7200 Tuttlingen | Device for medical visual examinations of body cavities or ducts by one manoeuvre |
| DE3414730A1 (en) * | 1984-04-18 | 1985-10-31 | Rudolf Riester Gmbh & Co Kg, Fabrik Med. Apparate, 7455 Jungingen | OTOSCOPE AND METHOD FOR THE PRODUCTION THEREOF |
| US5888195A (en) * | 1998-03-26 | 1999-03-30 | Schneider; Cary N. | Laryngoscope blade |
| AU2011251807B2 (en) | 2010-05-13 | 2016-07-07 | Covidien Ag | Laryngoscope insertion section structure |
| JP7169426B2 (en) | 2018-07-30 | 2022-11-10 | テレフレックス メディカル インコーポレイテッド | laryngoscope blade with light guide |
| CN116942067B (en) * | 2023-06-19 | 2024-03-22 | 珠海微视医用科技有限公司 | Disposable blade laryngoscope and processing method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1766713B1 (en) * | 1968-07-08 | 1971-01-21 | Medicon Chirurgiemechaniker Ge | Laryngoscope with fiberglass light guide |
| US3598113A (en) * | 1968-10-09 | 1971-08-10 | Welch Allyn Inc | Disposable laryngoscope construction |
| US3766909A (en) * | 1971-07-20 | 1973-10-23 | A Ozbey | Laryngoscope with disposable blade and light guide |
| US3986854A (en) * | 1974-09-23 | 1976-10-19 | Vicon Products Corporation | Method of making autoclavable instrument with sintered fiber glass rod |
| DE2621232A1 (en) * | 1976-05-13 | 1977-11-24 | Holzhauer Und Sutter Medizinis | Laryngoscope with scoop having Z or U cross-section - has current supply in handle fed to lamp by lead housed in hollow section inside scoop |
| DE2738202C2 (en) * | 1977-08-24 | 1984-03-29 | Heine Optotechnik Gmbh & Co Kg, 8036 Herrsching | Laryngoscope |
| GB1546000A (en) * | 1977-12-16 | 1979-05-16 | Bullard J | Laryngoscopes |
| EP0091945B1 (en) * | 1981-10-16 | 1988-05-25 | Michael S. Upsher | A laryngoscope including a separate disposable blade and its method of use |
-
1981
- 1981-05-18 DE DE19813119726 patent/DE3119726C2/en not_active Expired
-
1982
- 1982-05-17 IL IL6579782A patent/IL65797A/en not_active IP Right Cessation
- 1982-05-17 FR FR8208581A patent/FR2505645B1/en not_active Expired
- 1982-05-17 CA CA000403081A patent/CA1174135A/en not_active Expired
- 1982-05-17 GB GB08214287A patent/GB2102679B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2102679A (en) | 1983-02-09 |
| IL65797A (en) | 1985-12-31 |
| DE3119726C2 (en) | 1983-02-24 |
| GB2102679B (en) | 1984-09-26 |
| DE3119726A1 (en) | 1982-12-23 |
| FR2505645A1 (en) | 1982-11-19 |
| FR2505645B1 (en) | 1986-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3598113A (en) | Disposable laryngoscope construction | |
| US3986854A (en) | Method of making autoclavable instrument with sintered fiber glass rod | |
| AU661847B2 (en) | Sheath for endoscope | |
| US4149538A (en) | Resectoscope electrode assembly with non-conductive bearing tube and method of making the same | |
| US4778247A (en) | Molded objective head for fiberscopes with integral lenses | |
| US9173478B2 (en) | Oral care instrument | |
| US3335715A (en) | Fiber optic catheter | |
| US5131380A (en) | Softwall medical tube with fiberoptic light conductor therein and method of use | |
| US7150629B2 (en) | Lighted ultrasonic handpiece and color code grip system | |
| US5921917A (en) | Hand-held viewing system with removable sheath | |
| CA1174135A (en) | Laryngoscope and improved blade therefor | |
| EP0532109A1 (en) | Double lumen catheter | |
| WO1985002101A1 (en) | Endoscopic device having handle assembly and catheter assembly | |
| US5335647A (en) | Potted endoscope | |
| US3728998A (en) | Otoscope | |
| US3496931A (en) | Illuminating endoscope with oval fiber optic channel | |
| JP2018534066A (en) | Method of manufacturing a medical device and such a medical device | |
| US4317615A (en) | Protective case for a quartz-rod optical wave guide | |
| US3269387A (en) | Endoscope with rigid fiberscope illuminating means | |
| CA2093944A1 (en) | Illuminated surgical cannula | |
| EP0161834A1 (en) | Objective head for fibrescopes | |
| US6561801B1 (en) | Light guide unit, method for producing the same, and dental handpiece having light guide unit | |
| KR101338515B1 (en) | Portable teeth tint case | |
| EP1662967A1 (en) | Endoscope | |
| CN210871478U (en) | Novel mouth mirror |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |