WO2022268273A1 - Endoskopsystem - Google Patents
Endoskopsystem Download PDFInfo
- Publication number
- WO2022268273A1 WO2022268273A1 PCT/DE2022/200135 DE2022200135W WO2022268273A1 WO 2022268273 A1 WO2022268273 A1 WO 2022268273A1 DE 2022200135 W DE2022200135 W DE 2022200135W WO 2022268273 A1 WO2022268273 A1 WO 2022268273A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- endoscope
- section
- working sleeve
- working
- channel
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims abstract description 88
- 230000004323 axial length Effects 0.000 claims abstract description 3
- 238000005286 illumination Methods 0.000 claims description 9
- 239000013307 optical fiber Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- A61B1/012—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
-
- 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
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/007—Auxiliary appliance with irrigation system
Definitions
- the invention relates to an endoscope system, in particular an endoscope system for spinal column surgery.
- Endoscopic operations are often performed with continuous fluid irrigation ⁇ .
- Continuous fluid flushing maintains ⁇ a clear field of view by flushing blood and tissue particles out of the field ⁇ of view.
- intraoperative pressure during spinal surgery must not increase excessively.
- the essential elements of the endoscope system according to the invention are a working sleeve and an endoscope which can be inserted into the working sleeve.
- the endoscope can be pushed into the working sleeve from the distal end.
- the endoscope can preferably be displaced and rotated in the working sleeve in the axial direction also rotatable in its angular position about a longitudinal axis.
- the endoscope and the working sleeve are preferably designed as rigid elements or shafts ⁇ .
- a first liquid channel is formed ⁇ , which is open towards the distal end. That means ⁇ the fluid channel has ⁇ an opening at the distal end of the endoscope.
- the endoscope has a liquid connection at its proximal end, to which the liquid channel can be connected to a supply device in order to conduct liquid through the liquid channel.
- a shut-off valve and, for example, a suitable connection element for connection with a hose can be arranged on the liquid connection in a known manner.
- the outer cross-section of the endoscope and the inner cross-section of the working sleeve are specially matched to one another in such a way that the endoscope, when it is inserted into the working sleeve, has a first section of its outer circumference on the inner circumference abutting ⁇ the working sleeve and spaced ⁇ in a second portion of its outer periphery from the inner periphery of the working sleeve.
- the cross section refers to a plane normal to the longitudinal axis of the working sleeve, which extends from the proximal to the distal end.
- the outer circumference of the endoscope is designed to correspond to the inner contour of the working sleeve ⁇ , so that a flat contact or a parallel course of the walls is preferably achieved ⁇ .
- the first section preferably extends over more than 90 degrees, more preferably over at least half of the inner circumference of the working sleeve, so that the endoscope preferably over at least one circumferential section of greater than 90 degrees and more preferably at least 180 degree lies flat on the inner circumference of the working sleeve ⁇ or extends parallel to it ⁇ .
- the contact area is preferably substantially uninterrupted in the circumferential direction. In this way, in particular, a guide for rotating the endoscope can be implemented inside the working sleeve.
- the free space forms ⁇ a second fluid channel that is open towards the distal end.
- the free space preferably extends over the entire axial length of the working sleeve, i.e. from the distal to the proximal end.
- the cross section of the working sleeve and the endoscope are constant over the axial extent from the proximal to the distal end.
- the working sleeve has a second fluid connection in the region of its proximal end, which is connected to the free space that defines the second fluid channel.
- This liquid connection can have a connection element for connection to a hose and optionally a shut-off valve in a known manner.
- a circuit of liquid can take place through the first and the second liquid channel, the liquid flowing in one direction through the liquid channel inside the endoscope and in the other direction through the free space between the endoscope and the working sleeve.
- the first liquid channel preferably forms the inflow channel through which liquid is conducted into the operating area
- the second liquid channel forms the backflow or outflow channel through which the liquid and any particles or substances to be flushed away are discharged from the operating area.
- the endoscope preferably rests with its outer circumference on the inner circumference of the working sleeve in such a way that, viewed in the direction of the diameter, a free space is formed on only one side, ie only on one side of the longitudinal axis of the instrument, while on the side diametrically opposite to the free space, the outer circumference of the endoscope against the inner circumference of the working sleeve ⁇ . Pliering creates greater mechanical stability, in particular greater resistance to buckling loads.
- the endoscope has a viewing lens at its distal end, for example in the form of an objective lens.
- the viewer preferably has a circular cross-section. Through this viewing window or through this objective lens, the surgical field can be viewed, whereby the image can be transmitted through a video system or a connected endoscope.
- the scope is preferably sealed within the distal end face of the endoscope.
- the viewing scope with the subsequent endoscope can define a straight viewing direction parallel to the longitudinal axis of the instrument or an angled viewing direction.
- An angled viewing direction is preferably in the direction of the axial extension of a working canal, so that a working space located distally in front of the working canal can be observed using the endoscope through the viewing window.
- an opening of the first liquid channel and the free space forming the second liquid channel are located on sides of the window that face away from one another, more preferably on sides that face away from one another essentially diametrically.
- This design ensures that the liquid flows from one liquid channel into the other, preferably from the first liquid channel into the second liquid channel, via the sight glass, which is hot, along the outside of the sight glass. In this way, the field of vision is continuously flushed and a free view ⁇ into the operating area ⁇ is guaranteed.
- an opening of the first liquid channel and the free space defining the second liquid channel are relative to a viewing window, ie preferably the viewing window of an endoscope, as described above arranged ⁇ that between the first and the second liquid channel a liquid flow runs through a field of view located in front of the viewing window. That is, when liquid is supplied through the first liquid channel and discharged through the second liquid channel, the liquid formation exits the first liquid channel at the distal end, passes through the field of view in front of the viewer, and is discharged through the second liquid channel. Alternatively, the fluid formation could also run in the opposite direction.
- the opening of the first fluid channel and the clearance are preferably located such that the flow passes through the angled field of view.
- the opening and the free space can optionally be arranged offset in the viewing direction, preferably offset towards a working channel.
- the working sleeve preferably has a circular inner cross-section. More preferably, the working sleeve is designed overall as a tube with a circular cross section.
- the circular inner cross-section enables the endoscope to be rotated inside the working sleeve, with the endoscope being able to slide along the inner circumference of the working sleeve in the area of the first section of its outer circumference or move parallel to the inner circumference.
- the endoscope has in the first section of its outer circumference an outer contour that is arcuate in cross section, with the outer contour having a circular arc shape preferably having a radius of curvature which essentially corresponds to the radius of the inner circumference of the working sleeve.
- the radii of the inner circumference of the working sleeve and the outer contour of the endoscope can deviate slightly from each other, so that a fit is created which makes it possible ⁇ for the arcuate outer circumference section of the endoscope to can slide along the circumference of the working sleeve or move in parallel.
- the circular inner contour of the working sleeve extends concentrically to the longitudinal axis of the working sleeve, which runs from the proximal end to the distal end.
- the circular arc-shaped outer circumference section of the endoscope in the first section of the outer circumference of the endoscope curves around the same longitudinal axis, which is therefore preferably also an axis of rotation around which the endoscope can be rotated inside the working sleeve.
- the endoscope is preferably rotatable inside the working sleeve about a longitudinal axis, preferably the longitudinal axis of the working sleeve.
- the endoscope can be rotatably mounted or held in a receptacle at the proximal end of the working sleeve.
- an outer peripheral surface of the endoscope preferably slides along the inner wall of the working sleeve in the region of the first section.
- the free space formed between the second section of the outer circumference of the endoscope and the inner wall of the working sleeve, which acts as a second liquid channel, rotates together with the endoscope around the longitudinal axis of the working sleeve.
- the second liquid channel always maintains a defined position relative to the endoscope, regardless of its angular position inside the working sleeve.
- the second liquid channel preferably has a larger cross-sectional area than the first liquid channel. This is especially then advantageous if the second liquid channel functions as a drain or suction channel ⁇ . If the backflow has a larger cross-section than the inflow through the first liquid channel ⁇ , it is ensured ⁇ that the liquid will not cause an undesirable increase in pressure ⁇ in the operating area ⁇ .
- the free space preferably has a cross section which is at least 20%, more preferably more than 50%, larger than the cross section of the first liquid channel.
- the free space cross-section can also be three to five times the cross-section of the first liquid passage or designed larger ⁇ .
- the endoscope more preferably has in its interior a working channel which is open towards the distal end and preferably has a circular cross section.
- the working channel extends parallel to the longitudinal axis of the endoscope and thus preferably parallel to the longitudinal axis of the working sleeve.
- the working channel extends ⁇ from the proximal to the distal end of the endoscope.
- the working channel is connected to a receptacle for a working insert, with the receptacle preferably being designed in such a way that a working insert or instrument can be pushed through the receptacle and into the working channel in a sealed manner.
- the working instrument can preferably be moved in a known manner in the working channel.
- the working channel preferably lies next to the first liquid channel and, if necessary, an endoscope optics in the endoscope.
- the opening of the working channel at the distal end of the endoscope is preferably located relative to the viewing window in such a way that an instrument advanced through the working channel into the endoscope region is located in the field of view through the viewing window.
- a cross-sectional axis of the working channel preferably a diameter axis of the working channel
- a cross-sectional axis of the viewing window preferably a diameter axis of the viewing window
- the straight line defined by the cross-sectional axes mentioned and the outer contour in the first section of the outer circumference of the endoscope further preferably define a semicircle.
- the endoscope has a semicircular shape in its first section.
- the endoscope is flattened or has an oval outer contour which is smaller than the inner contour of the working sleeve, so that there is a free space in the manner described, i.e. in particular an arcuate free space between the endoscope and the inner circumference of the working sleeve, which functions as the second liquid channel in the manner described ⁇ .
- the sum of the diameters of the viewing window and the working channel is expediently greater than 75% of the inner diameter of the working sleeve. In this way, the inner cross-section ⁇ of the working sleeve is optimally utilized.
- the image can be transmitted in the endoscope via a video system or endoscope optics.
- a video sensor could be arranged in the region of the distal end of the endoscope, which is hot ⁇ , in particular behind the viewing window or a lens attached to the viewing window.
- the image can be transmitted from the distal end to the proximal end of the endoscope via a rigid endoscope optics, for example a lens or light guide arrangement, possibly with a Camera could be arranged in the region of the proximal end of the endoscope, for example on a handle.
- the endoscope has an illumination device.
- at least one light exit surface is preferably arranged at the distal end, via which the surgical field can be illuminated.
- At least one light-emitting diode can be arranged on the light exit surface for illumination.
- the lighting can also take place via optical fibers, which transmit light from the proximal to the distal end of the endoscope.
- a corresponding illumination connection or a light source can be provided at the proximal end of the endoscope, via which light is guided into the optical fibers, which then transmit the light to the distal end to the light exit surface mentioned.
- the optical fibers leading to the illumination are particularly preferably arranged, with the optical fibers preferably occupying the entire remaining free space inside the Fill out the endoscope, an endoscope optics surrounding the first liquid channel and the working sleeve.
- the optical fibers can be arranged in the area of the distal end face of the endoscope, which surrounds the viewing window, the outlet opening of the first liquid channel and the opening of the working channel.
- Fig. 2 is an enlarged plan view of the distal end of the inventions to the invention Endoskopsysfems.
- the endoscope system according to the invention has, as two essential elements, a working sleeve 2 and an endoscope 4 that can be replaced in it.
- the working sleeve 2 is tubular and the endoscope 4 is pushed into the working sleeve 2 through an opening or receptacle 6 at the proximal end of the working sleeve 2 so that it emerges from the working sleeve 2 at the distal end.
- the endoscope 4 has a flange handle 8 at its proximal end.
- a working channel 10 inside the endoscope 4 is open towards the proximal end at a receptacle 12 through which a working insert or instrument can be inserted into the working channel 10 .
- the working sleeve 2 has a circular cross-section and in particular a circular inner cross-section transverse to the longitudinal axis X, which extends from the proximal to the distal end.
- the inner peripheral surface of the working sleeve 2 extends concentrically around the longitudinal axis X.
- the endoscope 4 has a cross section which is semicircular in a first section and oval in a second section. In this example, a first section of the outer circumference of the endoscope 4 extends over 180 degrees, i.e.
- the outer contour of the endoscope is semicircular and white ⁇ has a radius which essentially corresponds to the radius of the inner circumference of the working sleeve 2 ⁇ , so that the endoscope 4 with its outer circumference can slide along the inner circumferential surface 2 in the first section 14 when the endoscope 4 moves around the longitudinal or central axis X of the working sleeve 2 is rotated. This can be done by turning in the tion 6 of the working sleeve 2 take place.
- a second section 16 of the outer circumference of the endoscope 4 the section to the right of the Y axis in FIG .
- a first liquid channel 20 is formed inside the endoscope 4 and ends at the proximal end or handle 8 of the endoscope 4 at a first liquid connection 22 . Also open towards the distal end of the endoscope 4 is the working channel 10, which extends in the proximal direction to the receptacle 12 ⁇ . At the distal end of the endoscope 4 there is also a viewing window 24, which can be designed as an objective lens, for example, and form the distal end of an endoscope optics, which extends in the longitudinal direction X through the endoscope shaft 4 to the proximal end, i.e. the Handle 8 toward, extend ⁇ .
- An eyepiece can be provided on the handle 8 or a camera can be attached for image recording.
- a video chip could also be arranged in the viewing window 24 or behind the viewing window 24 .
- Two LEDs 26 are arranged at the distal end of the endoscope 4 for illumination.
- light guides could also be arranged inside the endoscope 4 , which extend from the distal end to an illumination connection on the handle 8 .
- the light guides could preferably fill out the entire free space surrounding the working channel 10, the first liquid channel 20 and the endoscope optics.
- the working channel 10 and the viewing window 24 are located in the endoscope 4 in such a way that their diameter axes are on the common diameter axis Y transverse to the longitudinal axis X, i.e. they extend along a common straight line .
- the first liquid channel 20 is arranged relative to the free space 18, which forms a second liquid channel, so that the first liquid channel 20 and the free space 18 are on opposite sides of the axis Y, i.e. on opposite sides of the viewing window 24 are located.
- the free space 18 as the second liquid channel is connected to a second liquid connection 28 at the proximal end of the working sleeve 2 .
- the first liquid connection 22 and the second liquid connection 28 can be connected to hoses for the supply and removal of liquid.
- the first liquid channel 20 serves as an inlet, while the second liquid channel 18 serves as an outlet or return.
- the cross section of the free space 18 is larger than the cross section of the first liquid channel 20, thus ensuring that a larger flow cross section is available for the return flow, so that an increase in pressure due to the supply of liquid in the surgical field can be avoided. It is assured ⁇ that the return flow is always greater than the inflow.
- the viewing window 24 Since the opening of the first liquid channel 20 at the distal end and the opening of the free space 18 are located on opposite sides of the viewing window 24, which is hot on opposite sides of the axis Y, it is ensured that a liquid flow coming out of the first liquid channel 20 flows out ⁇ and towards the free space 18 ⁇ , the viewing window 24 is overflown on its outside and thus keeps the field of view continuously flushed and free of disturbing contaminants, for example blood or tissue parts.
- This direction of flow also rotates when the endoscope 4 rotates in the working sleeve 2, so that independent of the angular position of the endoscope 4 in the working sleeve 2, flow over the viewing window 24 is always ensured.
- the opening of the first liquid channel 20 is slightly offset toward the working channel 10 in a direction parallel to the Y axis relative to the viewing window 24 . This makes it possible ⁇ to optimally utilize the cross-sectional area of the endoscope 4 . Furthermore, in the present example, the viewing direction from the viewing window 24 is angled, ie directed towards the working channel 10 .
- the offset arrangement of the opening of the liquid channel 20 means that the liquid flow runs from the first liquid channel 20 to the free space 18 through the viewing field in the angled viewing direction in front of the viewing window 24 .
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Endoscopes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22740286.4A EP4358819A1 (de) | 2021-06-25 | 2022-06-20 | Endoskopsystem |
KR1020247002314A KR20240024228A (ko) | 2021-06-25 | 2022-06-20 | 내시경 시스템 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021206584.8 | 2021-06-25 | ||
DE102021206584.8A DE102021206584A1 (de) | 2021-06-25 | 2021-06-25 | Endoskopsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022268273A1 true WO2022268273A1 (de) | 2022-12-29 |
Family
ID=82482979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2022/200135 WO2022268273A1 (de) | 2021-06-25 | 2022-06-20 | Endoskopsystem |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4358819A1 (de) |
KR (1) | KR20240024228A (de) |
DE (1) | DE102021206584A1 (de) |
WO (1) | WO2022268273A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1152684A1 (de) * | 1999-02-18 | 2001-11-14 | Karl Storz GmbH & Co. KG | Endoskop |
DE102015003560B3 (de) * | 2015-03-18 | 2016-06-30 | Schölly Fiberoptic GmbH | Uretero-Renoskop und Verfahren zum Einführen eines Endoskops |
EP3250105A1 (de) * | 2015-01-28 | 2017-12-06 | Covidien LP | Geweberesektionssystem |
-
2021
- 2021-06-25 DE DE102021206584.8A patent/DE102021206584A1/de active Pending
-
2022
- 2022-06-20 WO PCT/DE2022/200135 patent/WO2022268273A1/de active Application Filing
- 2022-06-20 EP EP22740286.4A patent/EP4358819A1/de active Pending
- 2022-06-20 KR KR1020247002314A patent/KR20240024228A/ko unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1152684A1 (de) * | 1999-02-18 | 2001-11-14 | Karl Storz GmbH & Co. KG | Endoskop |
EP3250105A1 (de) * | 2015-01-28 | 2017-12-06 | Covidien LP | Geweberesektionssystem |
DE102015003560B3 (de) * | 2015-03-18 | 2016-06-30 | Schölly Fiberoptic GmbH | Uretero-Renoskop und Verfahren zum Einführen eines Endoskops |
Also Published As
Publication number | Publication date |
---|---|
DE102021206584A1 (de) | 2022-12-29 |
EP4358819A1 (de) | 2024-05-01 |
KR20240024228A (ko) | 2024-02-23 |
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