US20220167832A1 - Hysteroscopes with curved tips - Google Patents
Hysteroscopes with curved tips Download PDFInfo
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- US20220167832A1 US20220167832A1 US17/675,751 US202217675751A US2022167832A1 US 20220167832 A1 US20220167832 A1 US 20220167832A1 US 202217675751 A US202217675751 A US 202217675751A US 2022167832 A1 US2022167832 A1 US 2022167832A1
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- shaft
- hysteroscope
- distal end
- channel
- housing
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Images
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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
-
- 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
- A61B1/00163—Optical arrangements
- A61B1/00174—Optical arrangements characterised by the viewing angles
- A61B1/00179—Optical arrangements characterised by the viewing angles for off-axis viewing
-
- 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
- A61B1/00163—Optical arrangements
- A61B1/00195—Optical arrangements with eyepieces
-
- 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
- A61B1/012—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 characterised by internal passages or accessories therefor
-
- 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
- A61B1/012—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 characterised by internal passages or accessories therefor
- A61B1/015—Control of fluid supply or evacuation
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- 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
-
- 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
- A61B1/303—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 vagina, i.e. vaginoscopes
Definitions
- This invention relates to medical devices, particularly hysteroscopes.
- Hysteroscopy is a procedure to inspect the uterine cavity for the diagnosis of intrauterine pathology.
- the procedures may include surgical intervention (operative hysteroscopy).
- an endoscope a hysteroscope
- a hysteroscope carries optical fibers or light channels and inflow and outflow channels for insufflation of the uterine cavity.
- an operating channel may be included to allow scissors, graspers or biopsy instruments to be used to perform operations.
- FIG. 1 shows an example of a conventional hysteroscope.
- a hysteroscope 100 includes a straight shaft 19 , which houses optic fibers and various channels (not shown).
- the proximal part includes a light source connector 10 , two fluid controls 14 a and 14 b , each of which is connected to a bilateral (on/off) valve 13 .
- the straight shaft 19 is designed for ease of insertion of the hysteroscope.
- the straight shaft also makes it easier to pass various equipment (e.g., scissors, graspers or biopsy instruments) through the operating channel to perform operative hysteroscopy.
- various equipment e.g., scissors, graspers or biopsy instruments
- this configuration is not ideal for operations that need to access side walls or the areas of a uterus in the region of the fallopian tubal ostium.
- to access fallopian tube or to place an Essure® birth control device would require operation in the cornual regions of a uterus.
- the distal end of the straight shaft of such a conventional hysteroscope may be equipped with a lens arranged at an angle relative to the longitudinal axis, typically 30 degrees.
- a hysteroscope in accordance with one embodiment of the invention includes a shaft comprising a fiber optic light channel, an operating channel, and two fluid circulating channels; and a zero-angle lens disposed at an distal end of the fiber optic light channel, wherein a distal section of the shaft has a bent section, and wherein the bent section has a deflection angle of about 5-40 degrees relative to a longitudinal axis of the remaining section of the shaft.
- the fiber optic light channel, the operating channel, and the two fluid circulating channels may be integral parts of the shaft.
- the shaft has the outside diameter of about 4-7 mm and the length of about 200-250 mm, wherein the bent section is about 20-35 mm long, and the deflection angle is about 10-30 degrees.
- a hysteroscope further includes a light source connector disposed at a base section in a peripheral direction substantially the same as a direction of the bent section.
- FIG. 1 shows a conventional hysteroscope.
- FIG. 2A shows a top view of a hysteroscope in accordance with one embodiment of the invention
- FIG. 2B shows a side view of the hysteroscope of FIG. 2A .
- FIG. 3 shows a schematic illustrating detailed structure at the distal end of a hysteroscope in accordance with one embodiment of the invention.
- Embodiments of the invention relate to hysteroscopes designed and constructed so that a physician can use these instruments safely and with minimal discomfort to the female patient, and be able to insert the scope through the vagina and cervix into the uterine cavity for therapeutic or diagnostic medical purposes with relative ease.
- hysteroscopes in accordance with embodiments of the invention relate to a bent tip at the distal end to facilitate viewing and access side walls or conual areas of a uterus.
- FIGS. 2A and 2B show one example of a hysteroscope in accordance with one embodiment of the invention.
- FIG. 2A shows a top view of a hysteroscope 20
- FIG. 2B shows its side view.
- the hysteroscope 20 may include conventional parts, such as fluid inlet and outlet 14 a and 14 b , bilateral (off and on) valves 13 , a light source connector 10 , an operating channel 9 , and a shaft 11 .
- the fluid inlet and outlet 14 a and 14 b are for fluid circulation to clear away debris and to allow uterine distention.
- the light source connector is located at the base region 12 (i.e., housing), which is also used for manipulating the hysteroscope shaft and tip in an up-and-down manner, to right or left, or in a circular manner, so as to obtain the direct view of the cervical canal or the inside of the expanded uterine body. While in this particular example, various components in the proximal region are shown to be at particular locations relative to each other, one skilled in the art would appreciate that other modifications and variations are possible without departing from the scope of the invention.
- FIGS. 2A and 2B also including a viewing portion 18 .
- the shaft 11 includes a distal section 1 that is bent or curved such that the distal end 8 of the shaft 11 is deflected from the main axis of the shaft 11 (i.e., the longitudinal axis of the hysteroscope).
- the shaft 11 may have a length 6 of about 200-250 mm, preferably about 210-230 mm, more preferably about 220 mm.
- the bent section 1 may have a length 7 of about 10-50 mm, preferably about 20-35 mm, more preferably about 25-30 mm. This area where 7 and 7 A meet allows for a suitable angle (e.g., 22 degrees) deflection of that portion of the hysteroscope shaft.
- any numerical ranges disclosed in this description are intended to include all numbers therebetween, as if these numbers have been individually disclosed.
- the shaft 11 may have a length of about 220 mm and the bent section 1 may have a length about 26 mm. This will leave the straight portion, or straight section, of the shaft having a length 7 A of about 194 mm.
- these specific numbers are for illustration only. One skilled in the art would appreciate that other dimensions are possible without departing from the scope of the invention.
- the light source connector 10 may be arranged in the same peripheral direction as the curve direction of the distal section 1 , making it easier to know which way the distal end 8 of the shaft 11 is pointed. It also allows for movement of the scope body and camera toward the opposite inner thigh position, from the scope tip and lens, in an unencumbered manner, so as to facilitate the head-on viewing of the fallopian tubal ostium.
- the peripheral directions of the light source connector 10 and the curved tip may not be aligned. Instead, the direction of the bend may be marked in some other manner, such as with a line or dot in the base section 12 .
- FIG. 3 shows a schematic illustrating the curved distal section 1 of the shaft 11 .
- This enlarged drawing illustrates various channels included in the shaft 11 .
- these channels may include a fiber optic light channel 2 , an operating channel 3 , and fluid circulation channels 4 a and 4 b (i.e., inflow and outflow channels).
- the shaft outside diameter 5 may be any suitable size, preferably in the range of about 3 mm to about 10 mm, more preferably about 4 mm to about 7 mm, and most preferably about 5 mm to about 6 mm.
- the shaft outside diameter may be about 5.3 mm.
- FIG. 3 also illustrates that the distal section 1 of the shaft is curved (or bent) from the main section of the shaft 11 .
- the bend or curve allows one to use a zero-degree lens.
- a zero-degree lens forms a zero degree angle with respect to the tip end surface plane of the distal tip end 8 (see FIG. 2B ).
- the zero-angle lens lies in a plane that is parallel with the end surface plane.
- the zero-angle lens allows the operator to have a head-on view of the viewable field and the fallopian tubal ostium when the Essure® procedure is being performed.
- the angle ⁇ of the bend or curve may be any suitable angle, for example in the range of from 5° to 40°, preferably from 10° to 30°, more preferably from 15° to 25°.
- a hysteroscope of the invention may have a curve or bend angle ⁇ of about 22°.
- the various channels in the shaft described above may be housed within a sheath (tubing) that is a separate piece.
- all channels may be encased and kept in place (with a matrix) inside a stainless steel round tubing.
- the various channels in the shaft may be made as integral parts of the shaft.
- the various channels may be machined in a solid piece of the material that comprises the shaft.
- the materials used for making the shaft and/or the channels may be any suitable materials used in medical devices. Examples of such materials include stainless steel, titanium, and polymers.
- the composite small diameter shaft unit is durable, easy to clean and sterilize, and the encased design protects the delicate internal light fibers of the scope during transportation, utilization, and storage.
- the uterine cavity cornual area with ostium comes into view.
- the light source connector may be located on the same side of the scope base as the direction of the deflection (bend) at the distal end of the shaft. This would help indicate the direction of the tip.
- the base may be now moved horizontally with slight pressure toward the patient's right or left inner thigh area.
- This will allow for a more lateral view inside the uterus, which now makes it possible to obtain a “head on” view of the right or left tubal ostium, especially when the tubal ostium is far lateral.
- the far lateral positioning of the tip of the scope shaft is often the difference in being able to insert a device (as the FDA approved Essure® Device) correctly through the ostium and into the proximal portion of the fallopian tube.
- valves 13 there are bilateral (off and on) valves 13 , which are connected to the 2 fluid channels/tubes ( 4 a & 4 b ) at their top ends ( 14 a & 14 b ) of the unit for fluid control. Removal of small particles of mucous and blood from the region of the distal end of the shaft 8 , during scope insertion or while viewing inside the uterine cavity may be accomplished by utilizing the ‘wash effect” of fluid flowing out of the “outflow” channel.
- the inflow channel 4 a may be supplied with an adequate amount of fluid (usually physiological saline solution) through the inflow tube connector 14 a and into the uterine cavity. Adequate distention and good viewing is obtained with a suitable flow rate, which may be accomplished by gravity with the fluid source at 1 to 2 feet about the cardiovascular level of the patient. This does not usually require increased pressure from a pressure pump or squeezing of the plastic fluid bag. Keeping the fluid source at the heart level will allow no greater than 155 mm Hg pressure inside the uterus. This would prevent damages caused by excessive pressure.
- fluid usually physiological saline solution
- the second channel (outflow channel) 4 b and outflow tube connector 14 b can be used for outflow fluid circulation so that the blood and other debris can be removed from the uterine cavity, for example, during an active procedure of hysteroscopy.
- Leur lock connections may be equipped on the ends of the connectors 14 a & 14 b —one for a connection to the fluid source tubing that will be used for fluid inflow, and the other may be used along with rubber or plastic tubing to drain away the circulating fluid as the tip of the hysteroscope is introduced thru the cervix and while the distal end of the scope shaft ( 11 and 1 ) are in the uterine cavity.
- the operating channel ( 9 ) may be any suitable size (typically about 2.4 mm) in diameter.
- it may be equipped with an external seal for introduction of a device, such as the Essure® device or can be used for other hysteroscopy instruments, such as scissors or forceps.
- a hysteroscope of the invention may have a unitary construction with a curved deflected distal end that permits the use of a zero-degree lens at the distal end of an optic channel.
- conventional hysteroscope have straight shafts and tilted lens at the tips.
- a conventional straight shaft hysteroscope normally compensates for the lack of peripheral vision, by making the optic lens with an angle. Physicians operating such a conventional scope would have to take this viewing angle into account when entering the cervical and uterine cavities.
- a head-on scope with a zero degree lens in accordance with embodiments of the invention, allows the user to naturally guide the scope without having to compensate for the angled lens. More importantly, a curved distal end with a head-on lens (zero degree lens) makes it ideal for procedures that require near “head on” viewing of the uterine fundal ostium (especially when the ostium is far lateral), such as the Essure® procedure.
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Abstract
A hysteroscope includes a shaft comprising an optics channel, an operating channel, and fluid circulating channels, wherein a distal section of the shaft has a bent section, and wherein the bent section has a deflection angle of about 5-40 degrees relative to a longitudinal axis of the remaining section of the shaft.
Description
- The present application is a continuation of U.S. patent application Ser. No. 13/589,736 filed on Aug. 20, 2012, which claims priority to U.S. Provisional Patent Application Ser. No. 61/525,414 filed on Aug. 19, 2011, the entire disclosures of which are incorporated herein by reference.
- This invention relates to medical devices, particularly hysteroscopes.
- Hysteroscopy is a procedure to inspect the uterine cavity for the diagnosis of intrauterine pathology. The procedures may include surgical intervention (operative hysteroscopy). In performing hysteroscopy, an endoscope (a hysteroscope) is inserted through the cervix into the uterus. A hysteroscope carries optical fibers or light channels and inflow and outflow channels for insufflation of the uterine cavity. In addition, an operating channel may be included to allow scissors, graspers or biopsy instruments to be used to perform operations.
-
FIG. 1 shows an example of a conventional hysteroscope. As shown, ahysteroscope 100 includes astraight shaft 19, which houses optic fibers and various channels (not shown). The proximal part includes alight source connector 10, two fluid controls 14 a and 14 b, each of which is connected to a bilateral (on/off)valve 13. - The
straight shaft 19 is designed for ease of insertion of the hysteroscope. In addition, the straight shaft also makes it easier to pass various equipment (e.g., scissors, graspers or biopsy instruments) through the operating channel to perform operative hysteroscopy. While astraight shaft 19 serves these purposes, this configuration is not ideal for operations that need to access side walls or the areas of a uterus in the region of the fallopian tubal ostium. For example, to access fallopian tube or to place an Essure® birth control device would require operation in the cornual regions of a uterus. To facilitate viewing these areas of a uterus, the distal end of the straight shaft of such a conventional hysteroscope may be equipped with a lens arranged at an angle relative to the longitudinal axis, typically 30 degrees. - One aspect of the invention relates to hysteroscopes. A hysteroscope in accordance with one embodiment of the invention includes a shaft comprising a fiber optic light channel, an operating channel, and two fluid circulating channels; and a zero-angle lens disposed at an distal end of the fiber optic light channel, wherein a distal section of the shaft has a bent section, and wherein the bent section has a deflection angle of about 5-40 degrees relative to a longitudinal axis of the remaining section of the shaft. The fiber optic light channel, the operating channel, and the two fluid circulating channels may be integral parts of the shaft.
- In accordance with embodiments of the invention, the shaft has the outside diameter of about 4-7 mm and the length of about 200-250 mm, wherein the bent section is about 20-35 mm long, and the deflection angle is about 10-30 degrees.
- In accordance with embodiments of the invention, a hysteroscope further includes a light source connector disposed at a base section in a peripheral direction substantially the same as a direction of the bent section.
- Other aspects and advantages of the invention will be apparent from the following description and the appended claims.
-
FIG. 1 shows a conventional hysteroscope. -
FIG. 2A shows a top view of a hysteroscope in accordance with one embodiment of the invention;FIG. 2B shows a side view of the hysteroscope ofFIG. 2A . -
FIG. 3 shows a schematic illustrating detailed structure at the distal end of a hysteroscope in accordance with one embodiment of the invention. - Embodiments of the invention relate to hysteroscopes designed and constructed so that a physician can use these instruments safely and with minimal discomfort to the female patient, and be able to insert the scope through the vagina and cervix into the uterine cavity for therapeutic or diagnostic medical purposes with relative ease. Specifically, hysteroscopes in accordance with embodiments of the invention relate to a bent tip at the distal end to facilitate viewing and access side walls or conual areas of a uterus.
-
FIGS. 2A and 2B show one example of a hysteroscope in accordance with one embodiment of the invention.FIG. 2A shows a top view of ahysteroscope 20, whileFIG. 2B shows its side view. As shown inFIG. 2B , thehysteroscope 20 may include conventional parts, such as fluid inlet andoutlet valves 13, alight source connector 10, an operating channel 9, and ashaft 11. The fluid inlet andoutlet -
FIGS. 2A and 2B also including aviewing portion 18. - In accordance with embodiments of the invention, the
shaft 11 includes adistal section 1 that is bent or curved such that the distal end 8 of theshaft 11 is deflected from the main axis of the shaft 11 (i.e., the longitudinal axis of the hysteroscope). In accordance with embodiments of the invention, theshaft 11 may have alength 6 of about 200-250 mm, preferably about 210-230 mm, more preferably about 220 mm. Thebent section 1 may have a length 7 of about 10-50 mm, preferably about 20-35 mm, more preferably about 25-30 mm. This area where 7 and 7A meet allows for a suitable angle (e.g., 22 degrees) deflection of that portion of the hysteroscope shaft. Please note that any numerical ranges disclosed in this description are intended to include all numbers therebetween, as if these numbers have been individually disclosed. - For example, in an exemplary hysteroscope of the invention, the
shaft 11 may have a length of about 220 mm and thebent section 1 may have a length about 26 mm. This will leave the straight portion, or straight section, of the shaft having a length 7A of about 194 mm. Again, these specific numbers are for illustration only. One skilled in the art would appreciate that other dimensions are possible without departing from the scope of the invention. - Referring to
FIG. 2B again, in accordance with embodiments of the invention, thelight source connector 10 may be arranged in the same peripheral direction as the curve direction of thedistal section 1, making it easier to know which way the distal end 8 of theshaft 11 is pointed. It also allows for movement of the scope body and camera toward the opposite inner thigh position, from the scope tip and lens, in an unencumbered manner, so as to facilitate the head-on viewing of the fallopian tubal ostium. - However, in accordance with other embodiments of the invention, the peripheral directions of the
light source connector 10 and the curved tip may not be aligned. Instead, the direction of the bend may be marked in some other manner, such as with a line or dot in thebase section 12. -
FIG. 3 shows a schematic illustrating the curveddistal section 1 of theshaft 11. This enlarged drawing illustrates various channels included in theshaft 11. For example, these channels may include a fiberoptic light channel 2, an operatingchannel 3, andfluid circulation channels diameter 5 may be any suitable size, preferably in the range of about 3 mm to about 10 mm, more preferably about 4 mm to about 7 mm, and most preferably about 5 mm to about 6 mm. For example, the shaft outside diameter may be about 5.3 mm. -
FIG. 3 also illustrates that thedistal section 1 of the shaft is curved (or bent) from the main section of theshaft 11. The bend or curve allows one to use a zero-degree lens. A zero-degree lens forms a zero degree angle with respect to the tip end surface plane of the distal tip end 8 (seeFIG. 2B ). In other words, the zero-angle lens lies in a plane that is parallel with the end surface plane. The zero-angle lens allows the operator to have a head-on view of the viewable field and the fallopian tubal ostium when the Essure® procedure is being performed. - The angle θ of the bend or curve may be any suitable angle, for example in the range of from 5° to 40°, preferably from 10° to 30°, more preferably from 15° to 25°. For example, a hysteroscope of the invention may have a curve or bend angle θ of about 22°.
- In accordance with some embodiments of the invention, the various channels in the shaft described above may be housed within a sheath (tubing) that is a separate piece. For example, all channels may be encased and kept in place (with a matrix) inside a stainless steel round tubing. In accordance with other embodiments of the invention, the various channels in the shaft may be made as integral parts of the shaft. In other words, the various channels may be machined in a solid piece of the material that comprises the shaft. The materials used for making the shaft and/or the channels may be any suitable materials used in medical devices. Examples of such materials include stainless steel, titanium, and polymers.
- In accordance with embodiments of the invention, the composite small diameter shaft unit is durable, easy to clean and sterilize, and the encased design protects the delicate internal light fibers of the scope during transportation, utilization, and storage.
- With a curved distal section, with a turn of the scope body either to the right or left, the uterine cavity cornual area with ostium (on that side) comes into view. A slight pressure of the scope body, toward the contra lateral side of the cervix and uterus, may allow a perfect ‘head-on’ view of the ostium and its attached fallopian tubes. As noted above, the light source connector may be located on the same side of the scope base as the direction of the deflection (bend) at the distal end of the shaft. This would help indicate the direction of the tip.
- For example, with the scope shaft in place inside the uterine fundus and the scope light base connector in a lateral position and pointing in the same direction as the top of the deflected end of the shaft, the base may be now moved horizontally with slight pressure toward the patient's right or left inner thigh area. This will allow for a more lateral view inside the uterus, which now makes it possible to obtain a “head on” view of the right or left tubal ostium, especially when the tubal ostium is far lateral. The far lateral positioning of the tip of the scope shaft is often the difference in being able to insert a device (as the FDA approved Essure® Device) correctly through the ostium and into the proximal portion of the fallopian tube.
- As shown in
FIG. 2B , there are bilateral (off and on)valves 13, which are connected to the 2 fluid channels/tubes (4 a & 4 b) at their top ends (14 a & 14 b) of the unit for fluid control. Removal of small particles of mucous and blood from the region of the distal end of the shaft 8, during scope insertion or while viewing inside the uterine cavity may be accomplished by utilizing the ‘wash effect” of fluid flowing out of the “outflow” channel. - The
inflow channel 4 a may be supplied with an adequate amount of fluid (usually physiological saline solution) through theinflow tube connector 14 a and into the uterine cavity. Adequate distention and good viewing is obtained with a suitable flow rate, which may be accomplished by gravity with the fluid source at 1 to 2 feet about the cardiovascular level of the patient. This does not usually require increased pressure from a pressure pump or squeezing of the plastic fluid bag. Keeping the fluid source at the heart level will allow no greater than 155 mm Hg pressure inside the uterus. This would prevent damages caused by excessive pressure. - The second channel (outflow channel) 4 b and
outflow tube connector 14 b, with its valve, can be used for outflow fluid circulation so that the blood and other debris can be removed from the uterine cavity, for example, during an active procedure of hysteroscopy. Leur lock connections may be equipped on the ends of theconnectors 14 a & 14 b—one for a connection to the fluid source tubing that will be used for fluid inflow, and the other may be used along with rubber or plastic tubing to drain away the circulating fluid as the tip of the hysteroscope is introduced thru the cervix and while the distal end of the scope shaft (11 and 1) are in the uterine cavity. - The operating channel (9) may be any suitable size (typically about 2.4 mm) in diameter. In addition, it may be equipped with an external seal for introduction of a device, such as the Essure® device or can be used for other hysteroscopy instruments, such as scissors or forceps.
- Advantages of the invention may include one or more of the following. A hysteroscope of the invention may have a unitary construction with a curved deflected distal end that permits the use of a zero-degree lens at the distal end of an optic channel. In contrast, conventional hysteroscope have straight shafts and tilted lens at the tips.
- A conventional straight shaft hysteroscope normally compensates for the lack of peripheral vision, by making the optic lens with an angle. Physicians operating such a conventional scope would have to take this viewing angle into account when entering the cervical and uterine cavities. In contrast, a head-on scope with a zero degree lens, in accordance with embodiments of the invention, allows the user to naturally guide the scope without having to compensate for the angled lens. More importantly, a curved distal end with a head-on lens (zero degree lens) makes it ideal for procedures that require near “head on” viewing of the uterine fundal ostium (especially when the ostium is far lateral), such as the Essure® procedure.
- While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the invention should be limited only by the attached claims.
- One of ordinary skill in the art will recognize that additional embodiments are possible without departing from the teachings of the present invention. This detailed description, and particularly the specific details of the exemplary embodiment disclosed therein, is given primarily for clarity of understanding, and no unnecessary limitations are to be understood therefrom, for modifications will become obvious to those skilled in the art upon reading this disclosure and may be made without departing from the spirit or scope of the invention.
Claims (20)
1. A hysteroscope, comprising:
a shaft defining one or more channels, the shaft including a straight section and a distal section that is a preformed bent section having a fixed deflection angle with respect to the straight section, the distal section terminating in a distal end of the shaft;
a housing attached to the shaft,
a light source connector integrated with the housing, the light source connector operably connected to the distal end of the shaft by way of one of the one or more channels; and
a viewing portion attached to the housing, the viewing portion operably connected to the distal end of the shaft by way of one of the one or more channels.
2. The hysteroscope of claim 1 , wherein the shaft is made of a rigid material.
3. The hysteroscope of claim 1 , wherein the viewing portion is positioned further away from the distal end of the shaft than the light source connector.
4. The hysteroscope of claim 1 , wherein the fixed deflection angle of the bent section of the shaft is in a fixed curve direction and the light source connector is located on the housing in the curve direction.
5. The hysteroscope of claim 1 , wherein the one or more channels includes an optics channel operably connected to the light source connector to provide light at the distal end of the shaft with the light source connector.
6. The hysteroscope of claim 1 , wherein the one or more channels includes an optics channel operably connected the viewing portion to allow viewing out the distal end of the shaft with the viewing portion.
7. The hysteroscope of claim 1 , wherein the one or more channels includes an optics channel operably connected to the light source connector and operably connected to the viewing portion to provide light at the distal end of the shaft with the light source connector and allowing viewing out the distal end of the shaft with the viewing portion.
8. The hysteroscope of claim 1 , wherein the one or more channels includes a fluid inflow channel and the housing defines a fluid inlet operably connected to the fluid inflow channel for supplying fluid to the distal end of the shaft.
9. The hysteroscope of claim 1 , wherein the one or more channels includes an operating channel configured for introduction of a device therethrough.
10. The hysteroscope of claim 1 , wherein each of the one or more channels have a central longitudinal axis parallel to and spaced a distance from a central longitudinal axis of the shaft.
11. The hysteroscope of claim 1 , wherein the housing and shaft are of unitary construction.
12. The hysteroscope of claim 1 , wherein the shaft has an outside diameter of about 4-7 mm and a length of about 200-250 mm, wherein the bent section is about 20-35 mm long, and the deflection angle is about 10-30 degrees.
13. The hysteroscope of claim 1 , wherein the shaft has an outside diameter of about 5.3 mm and a length of about 220 mm, wherein the bent section is about 26 mm long, and the deflection angle is about 22 degrees.
14. A hysteroscope, comprising:
a shaft defining a fluid channel, an operating channel, and an optics channel, the shaft including a straight section and a distal section that is a preformed bent section having a fixed deflection angle with respect to the straight section, the distal section terminating in a distal end of the shaft;
a housing attached to the shaft, the housing defining a fluid inlet operably connected to the fluid channel, and an operating inlet operably connected to the operating channel;
a light source connector integrated with the housing, the light source connector operably connected to the optics channel; and
a viewing portion attached to the housing, the viewing portion operably connected to the optics channel.
15. The hysteroscope of claim 14 , wherein the shaft is made of a rigid material.
16. The hysteroscope of claim 14 , wherein the viewing portion is positioned further away from the distal end of the shaft than the light source connector.
17. The hysteroscope of claim 14 , wherein the fluid inlet is positioned further away from the distal end of the shaft than the operating inlet.
18. A hysteroscope, comprising:
a shaft having a proximal end and a distal end, the shaft defining a fluid inflow channel and an optics channel extending from the proximal end to the distal end, the proximal end including a straight section and the distal end including a bent section having a fixed deflection angle with respect to the straight section;
a housing attached to the shaft, the housing defining a fluid inlet operably connected to the fluid inflow channel; and
a connector integrated with the housing and in communication with the optics channel to thereby provide light at the distal end of the shaft;
wherein the shaft is made of rigid material such that the fixed deflection angle of the bent section is maintained in the distal end of the shaft during insertion and manipulation of the shaft within a patient.
19. The hysteroscope of claim 18 , and further comprising a viewing portion attached to the housing, the viewing portion in communication with the optics channel to thereby allow viewing out the distal end of the shaft.
20. The hysteroscope of claim 19 , wherein the viewing portion is positioned further away from the distal end of the shaft than the connector.
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US17/675,751 US20220167832A1 (en) | 2011-08-19 | 2022-02-18 | Hysteroscopes with curved tips |
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US201161525414P | 2011-08-19 | 2011-08-19 | |
US13/589,736 US11291351B2 (en) | 2011-08-19 | 2012-08-20 | Hysteroscopes with curved tips |
US17/675,751 US20220167832A1 (en) | 2011-08-19 | 2022-02-18 | Hysteroscopes with curved tips |
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US13/589,736 Continuation US11291351B2 (en) | 2011-08-19 | 2012-08-20 | Hysteroscopes with curved tips |
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US17/675,751 Pending US20220167832A1 (en) | 2011-08-19 | 2022-02-18 | Hysteroscopes with curved tips |
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US11291351B2 (en) * | 2011-08-19 | 2022-04-05 | Harold I. Daily | Hysteroscopes with curved tips |
DE102013207109A1 (en) | 2013-04-19 | 2014-11-06 | Henke-Sass, Wolf Gmbh | Endoscope with a rigid curved shaft and method for producing such an endoscope |
CN103356151A (en) * | 2013-06-28 | 2013-10-23 | 苏州联科盛世科技有限公司 | Multipurpose disposable endoscope for uterine cavity diagnosis and treatment |
CN113413117B (en) * | 2021-05-17 | 2022-10-04 | 陕西吾方医疗科技有限公司 | Dependent spreading type diagnostic hysteroscope |
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