JP6461852B2 - Endoscopy tools - Google Patents

Description

  The present invention relates to an endoscope tool for using an endoscope.

The following US patent specification is considered representative of the current state of the art.
US Pat. No. 4,195,637, US Pat. No. 4,616,652 and US Pat. No. 6,663,589

The present invention relates to an endoscope-guided accessory.
Thus, according to one preferred embodiment of the present invention, at least one first selectively extensible tube adapted to be placed at a first position along the length of the tubular body part. And at least one second selectively extensible tubular body part sealing element adapted to be disposed at a second position along the length, and at least one One first selectively extensible tubular body part sealing element and at least one second selectively extensible tubular body part sealing element between the length of the tubular body part A controller adapted to define an intermediate region and configured to selectively seal at least one first and second tubular body part sealing element to the tubular body part; and fluid to the intermediate region To fulfill the function of supplying And a fluid source that, apparatus for supplying fluid is provided within a portion of the tubular body portion.

  Preferably, the device for supplying fluid also includes an endoscope extending at least partially along the tubular body part. Preferably, the sealing elements of the at least one first and second tubular body parts are movable relative to each other along the length.

  Preferably, at least one of the at least one first and second tubular body part sealing elements shall comprise a selectively expandable balloon. Further, the selectively expandable balloon includes an expandable balloon. Alternatively, the selectively expandable balloon includes a polyurethane balloon.

Preferably, the selectively expandable balloon includes a fixation balloon.
Preferably, at least one of the sealing elements of the at least one first and second tubular body parts is attached to the distal part of the endoscope. Alternatively or additionally, at least one of the at least one first and second tubular body part sealing elements shall be located in front of the endoscope.

Preferably, the device for supplying fluid also includes a fluid suction unit that performs a function of sucking fluid from the intermediate region.
Preferably, the fluid supply unit adopts an instrument passage of an endoscope in terms of function.

  In accordance with another preferred embodiment of the present invention, at least one tube including at least a first, a second and a third lumen, and a front selectively expandable in fluid communication with the first lumen. A balloon, wherein when expanded, said front selectively expandable balloon adapted to seal the tubular body part; and a rear selective in fluid communication with the second lumen. Expandable balloon, wherein when expanded, the rear selectively expandable balloon and the front and rear selectively expandable balloons are adapted to seal the tubular body part. A fluid supply outlet disposed in the middle and having an outlet in fluid communication with the third lumen and selectively expanding the front and rear selectively expandable balloons within the tubular body part. , Thereby at least partially sealed in between Inside a portion of the tubular body part, including a controller adapted to define a region and a fluid supply adapted to serve to supply fluid to an at least partially sealed intermediate region An apparatus for supplying fluid is also provided.

Preferably, the fluid supply unit functionally includes an outer tube.
Preferably, the fluid supply includes a functionally outer tube that extends through the interior of the rear selectively expandable balloon.

Preferably, the fluid is air.
Preferably, the fluid supply is functionally adapted to expand the intermediate region of the tubular body part.

  In accordance with yet another preferred embodiment of the present invention, an endoscope, an outer tube extending along the endoscope and defining at least one lumen, and through at least one lumen of the outer tube An endoscope assembly is further provided comprising an endoscope tool adapted to move and including a selectively expandable balloon.

Preferably, the selectively expandable balloon is a fixation balloon.
Preferably, the endoscope tool can be bent in front of the outer tube. Additionally or alternatively, the endoscopic tool shall be expandable in front of the endoscope. Preferably, the endoscope tool is generally more flexible than the endoscope.

  Preferably, the endoscope assembly also includes an endoscopic method that functionally cooperates with the endoscope. Preferably, the endoscope assembly also includes a balloon dilation / deflation controller. Preferably, the outer tube shall be such that an endoscopic tool can be inserted and removed.

Preferably, the endoscope tool includes a tube portion and a tip portion. Furthermore, the tip portion is generally more flexible than the tube portion.
In accordance with yet another preferred embodiment of the present invention, an endoscopic tool comprising a tube portion, a tip portion, and a selectively expandable balloon, adapted to move through the lumen of the outer tube. Is further provided.

  Preferably, the tip portion is generally more flexible than the tube portion. Additionally or alternatively, the expandable balloon shall be attached to the tube portion. Preferably, the inner portion of the expandable balloon is in communication with the inner portion of the tube portion, allowing the expandable balloon to be expanded through the tube portion. Alternatively or additionally, the balloon shall be an anchoring balloon.

  In accordance with yet another preferred embodiment of the present invention, an endoscope, a selectively expandable balloon attached to the distal portion of the endoscope, and extending along and selectively expandable along the endoscope An endoscope assembly is also provided that includes an outer tube that traverses the balloon.

Preferably, the outer tube passes between the selectively expandable balloon and the distal portion of the endoscope.
Preferably, the endoscope assembly also includes a tubular sleeve attached to the distal portion of the endoscope below the selectively expandable balloon. Preferably, the outer tube extends at least partially through a tubular passage secured to the distal portion of the endoscope. Furthermore, the outer tube is slidable in the tubular passage.

  Preferably, the tubular passage extends through the tubular sleeve. Additionally or alternatively, the tubular passage shall include at least one relatively rigid reinforcing element that allows a predetermined bending of the tubular passage. Preferably, the reinforcing element comprises a plurality of mutually spaced relatively rigid elements. Furthermore, the relatively rigid elements separated from each other shall be tubular.

  Preferably, the endoscope assembly also includes a balloon expansion tube in communication with the selectively expandable balloon. Additionally or alternatively, the selectively expandable balloon shall be an anchoring balloon.

Preferably, the endoscope assembly also includes an accessory that can be slidably inserted through the outer tube to a position in front of the endoscope.
Preferably, the endoscope assembly also includes an endoscopic tool that includes a selectively expandable balloon, at least a portion of which extends through the outer tube. Furthermore, the endoscopic tool can be slidably inserted through the outer tube. Alternatively, the endoscopic tool cannot be inserted through the outer tube.

Preferably, the endoscopic tool is slidably inserted through the tubular passage. Alternatively, the endoscopic tool shall not be inserted through the tubular passage.
Preferably, the selectively expandable balloon of the endoscopic tool is a fixation balloon. Additionally or alternatively, the selectively expandable balloon of the endoscopic tool is expandable in front of the endoscope.

Preferably, the endoscope assembly also includes a fluid supply that is functionally adapted to supply fluid via the outer tube.
In accordance with yet another preferred embodiment of the present invention, at least one tube including at least a first and a second lumen, and a front selectively expandable balloon in fluid communication with the first lumen. And when expanded, the front selectively expandable balloon described above adapted to engage a tubular body part and the front selectively expandable balloon can be selectively expanded. And a medically interacting device with a tubular body part comprising: a controller adapted to be slidably inserted through a second lumen to a position behind the front selectively expandable balloon Is further provided.

The term “medically interacting” includes, for example, examination, treatment, diagnosis, sampling, removal, labeling and any other suitable medical practice.
Preferably, the at least one tube includes an endoscope. The endoscope further includes an instrument passage defining a second lumen.

Preferably, the device that medically interacts with the tubular body part also includes an outer tube through which at least one tube defining the first lumen extends slidably.
Preferably, the at least one tube includes an endoscope, an outer tube, and a balloon dilator tube defining a first lumen that slidably extends through the outer tube. In addition, the balloon expansion tube is generally more flexible than the endoscope.

  Preferably, the front selectively expandable balloon is a fixation balloon. Additionally or alternatively, the front selectively expandable balloon may be selectively positionable in front of the endoscope. Alternatively or additionally, the device that interacts medically with the tubular body part also includes a rear selectively expandable balloon. In addition, the rear selectively expandable balloon is a fixation balloon. Alternatively, the rear selectively expandable balloon is attached at its periphery to the distal portion of the endoscope.

The invention will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
The terms “endoscope” and “endoscopy” are used throughout in a somewhat broader sense than their general meaning, for example, body cavities, such as the small intestine, large intestine, arteries and veins, Means devices and methods that operate within passageways and the like. These terms usually mean visual inspection, but as used herein, they are not limited to applications that employ visual inspection, and do not necessarily involve visual inspection. Also means apparatus, system and method.

The term “end” means the distal end of an endoscope, accessory, or tool farthest from the practitioner.
The term “proximal” refers to the end portion of an endoscope, accessory, or tool that is closest to the practitioner, typically outside the organ or body part of interest.

  Next, an endoscope system structured and operable according to one preferred embodiment of the present invention, and an auxiliary assembly structured and operable according to a preferred embodiment of the present invention. 1 to 4B, which show simplified illustrations and cross-sectional views, respectively, of FIG.

  As can be seen in FIGS. 1-4B, a conventional endoscopic system such as a console including a CV-100 video system center, a CLV-U20 light source, a SONY PVM-2030 video monitor, an OFP flushing pump. 100, all of which are commercially available from Olympus America Inc., Corporate Center Drive Street 2, Melville, USA 11747, New York. The system is a conventional internal such as CIF-100 video enteroscope or CF-Q160AL video colonoscope commercially available from Olympus America Inc., Corporate Center Drive Street 2, Melville, New York, USA. A conventional endoscope 101 forming part of the endoscope system 100 is preferably included.

  In accordance with one preferred embodiment of the present invention, an endoscope auxiliary assembly 102 comprising a peripheral balloon 103 is secured by a tubular sleeve 104 that is fixed over and associated with the peripheral balloon 103 on the distal portion of the endoscope 101. As shown, it can be attached to the endoscope 101.

  The tubular sleeve 104 is made of a flexible and stretchable material such as flexible and stretchable silicon, latex or rubber so that the sleeve conforms to the bending of the endoscope 101. It is understood that can be made possible. Tubular sleeve 104 has a non-tensioned inner diameter that is slightly smaller than the diameter of endoscope 101, thereby ensuring that it is securely positioned at the desired position at the distal end of endoscope 101 when extended. However, it is further understood that the sleeve can be allowed to be pulled and slid over the endoscope 101.

  Alternatively, the tubular sleeve 104 is made of a less extensible material such as polyurethane or nylon and has an inner diameter that is slightly larger than the inner diameter of the endoscope 101 so that the sleeve It can be pulled and slid on the endoscope 101. Preferably, the tubular sleeve 104 is formed with a relatively thin wall thickness to allow the sleeve to adapt to the bending of the endoscope 101. When placed in the desired location, it is understood that the tubular sleeve 104 can be fastened to the endoscope 101 by any suitable conventional means, such as medical adhesive tape.

  As shown in FIGS. 1-4B, the peripheral balloon 103 at least partially overlaps the tubular sleeve 104 and is secured and sealed therebetween by any suitable conventional means such as adhesive at the edges. Define the volume. Preferably, the expansion and contraction of the peripheral balloon 103 is provided via a tube 106 that communicates with the interior thereof. Tube 106 can be attached to endoscope 101 by any suitable conventional means such as medical adhesive tape at a number of locations along its length. Alternatively, the tube 106 may be removable from the endoscope 101.

  In accordance with one preferred embodiment of the present invention, it will be appreciated that the peripheral balloon 103 is generally extensible and can be expanded to a diameter that is approximately 3 to 10 times greater than its diameter when not expanded. . In accordance with one preferred embodiment of the present invention that is useful for small intestine endoscopy, the diameter of the peripheral balloon 103 when fully inflated is in the range of 3-4 cm.

  In certain embodiments that are useful for small intestine endoscopy, the diameter of the peripheral balloon is 4 cm when fully expanded. Preferably, expansion of the peripheral balloon 103 to a diameter of 4 cm or less can be achieved using a relatively low pressure, such as 3 to 7 kPa (30 to 70 mbar).

  In another specific embodiment useful for colonoscopy, the diameter of the peripheral balloon when fully expanded is in the range of 4-6 cm. Similarly, in a further embodiment useful for colonoscopy, the diameter of the peripheral balloon when fully expanded is 6 cm. Preferably, expansion of the peripheral balloon 103 to a diameter of 6 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In accordance with one preferred embodiment of the present invention, useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the inflation diameter range of the peripheral balloon 103 is the maximum cross-sectional diameter of the generally tubular body part. It is understood that the larger peripheral balloon 103 is thereby engaged with the inner surface of the tubular body part as a whole and also allows the endoscope 101 to be anchored. Preferably, the peripheral balloon 103 is relatively flexible and highly compliant that is operable to at least partially conform to the shape of the inner surface of the generally tubular body part when engaged on the inner surface of the generally tubular body part. It shall be a balloon.

  It will be appreciated that the peripheral balloon 103 can be formed of a suitable well-known stretchable material such as latex, flexible silicone or highly flexible nylon. Alternatively, the peripheral balloon 103 can be formed of polyurethane, which is less extensible and conformable than latex, flexible silicon, or highly flexible nylon. Preferably, the diameter of the peripheral balloon 103 should be sufficient to ensure tight fixation in any part of the generally tubular body part.

  In one preferred embodiment of the present invention, the endoscope auxiliary assembly 102 can include at least one outer tube 108. The outer tube 108 can be attached to the endoscope 101 at any number of locations along its length by any suitable conventional means such as medical adhesive tape. Alternatively, the outer tube 108 may be removable from the endoscope 101.

  It is understood that the outer tube 108 is flexible and extremely bendable, allowing the outer tube to be compliant with the bending of the endoscope 101. It is further understood that the outer tube 108 can be made of a low friction material such as TEFLON®.

  In one preferred embodiment of the invention, the outer tube 108 can be inserted through a tubular passage 109 extending longitudinally within the tubular sleeve 104. Alternatively, the tubular passage is inside the sleeve but may be located outside the endoscope 101. The outer tube 108 can be fully or partially inserted through the tubular passage 109 and secured to the tubular sleeve 104 by any conventional means, such as by friction or using a suitable adhesive. Alternatively, the outer tube 108 may be slidable relative to the tubular passage 109.

  Endoscopic tool 110 manufactured and operable in accordance with one preferred embodiment of the present invention extends through outer tube 108. The endoscopic tool 110 preferably includes a guide tube 112 that includes at least one first lumen 114 that expands and deflates the balloon 116 via the expansion opening 118. Preferably, the cross-sectional area of the guide tube 112 is sufficiently smaller than the cross-sectional area of the outer tube 108, particularly when the outer tube 108 is bent or curved, the guide tube 112 passes almost freely through the outer tube 108. Allow fluids to be supplied and expelled for expansion or other applications.

  It will be appreciated that the guide tube 112 is flexible and extremely bendable, allowing it to accommodate the bending of the endoscope 101 and bowel curvature. It is further understood that the guide tube 112 can be made of a low friction material, such as TEFLON.

  Preferably, the guide tube 112 seals at its distal end in front of the balloon 116 by any suitable method, such as by mechanical sealing or using a suitable adhesive, and the balloon 116 is passed through the guide tube 112. Make it easy to expand and contract.

  Preferably, the endoscope tool 110 includes a distal end portion 119 disposed in the distal direction of the balloon 116. The tip portion 119 can be made of a highly flexible tube, such as a TYGON® tube, with a diameter of 1.5 mm. The tip portion 119 can be connected to the distal end of the guide tube 112 by any conventional means, such as a suitable adhesive. In one preferred embodiment of the invention, the length of the tip portion 119 is 20-30 mm.

  The extreme bendability of the tip 119 prevents the endoscope tool 110 from sticking to the obstacle and bending when the endoscope tool 110 is advanced through the generally tubular body part in front of the endoscope 101. It is understood.

It is understood that the endoscope tool 110 and guide tube 112 are substantially more flexible than the endoscope 101, according to one preferred embodiment of the present invention.
It is further understood that the tube 106 is substantially more flexible than the endoscope 101 in accordance with one preferred embodiment of the present invention.

It is understood that the outer tube 108 is substantially more flexible than the endoscope 101 in accordance with another preferred embodiment of the present invention.
It will be appreciated that, in accordance with one preferred embodiment of the present invention, the balloon 116 is generally extensible and can be expanded to a diameter that is about 5 to 20 times greater than its diameter when not expanded. In certain embodiments useful for small intestine endoscopy, the balloon diameter ranges from 3 to 4 cm when fully expanded. In certain embodiments useful for small intestine endoscopy, the balloon diameter is 4 cm when fully expanded. Preferably, the expansion of the balloon 116 to a diameter of 4 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar). According to another specific embodiment, useful for colonoscopy, the balloon diameter when fully inflated is in the range of 4-6 cm. In another specific embodiment that is useful for colonoscopy, the balloon diameter when fully expanded is 6 cm. Preferably, expansion of balloon 116 to a diameter of 6 cm or less can be achieved using relatively low pressures, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In accordance with one preferred embodiment of the present invention, which is particularly useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the expansion range of the diameter of the balloon 116 is generally tubular. It is understood that it is larger than the maximum cross-sectional diameter of the body part, thereby allowing the inflated balloon 116 to engage the inner surface of the generally tubular body part and anchor the endoscopic tool 110 with the inner surface. Is done. Preferably, the balloon 116 is a relatively flexible, highly compliant balloon that, when engaged with the inner surface of the generally tubular body part, serves to at least partially conform to the shape of the inner surface. To do.

  It will be appreciated that the balloon 116 can be formed of a well-known stretchable material such as latex, flexible silicone or highly flexible nylon. Alternatively, the balloon 116 may be formed of a polyurethane that is less stretchable and less compliant than latex, flexible silicon or highly flexible nylon. Preferably, the diameter of the balloon 116 should be sufficient to ensure tight fixation at any location of the generally tubular body part.

  As can be seen in FIG. 1, the endoscopic tool 110 extends from the proximal end 124 of the outer tube 108 and guide tube 112 at its proximal portion 123 that governs the expansion and contraction of the balloon 116. Preferably, a communication balloon expansion / deflation control interface 122 is included. Further, a peripheral balloon expansion / deflation control interface 125 is preferably provided that communicates with the tube 106 and governs the expansion and contraction of the peripheral balloon 103.

  Preferably, the proximal end 124 of the outer tube 108 is adjacent to the practitioner control 129 of the endoscope 101 by a band 132 or by any other suitable conventional means such as a clip or medical adhesive tape. It is assumed that it is fixed to the proximal end portion of the endoscope 101. Preferably, the practitioner pulls or pushes the proximal end portion 123 of the guide tube 112 in a controlled manner relative to the proximal end 124 of the outer tube 108, thereby allowing the endoscope 101 within the generally tubular body portion. It is assumed that the balloon 116 is disposed at a desired position in front of the distal end of the balloon 116.

  FIG. 4A shows a state in which the endoscope tool 110 is disposed rearward, in which the balloon 116 is disposed just in front of the distal end of the endoscope 101. This rearward placement is preferably achieved by pulling the proximal end portion 123 of the guide tube 112 backward relative to the proximal end 124 of the outer tube 108.

  FIG. 4B shows the endoscope tool 110 positioned forward, with the balloon 116 positioned at a substantial distance in front of the distal end of the endoscope 101. This front placement is preferably achieved by pushing the proximal end portion 123 of the guide tube 112 forward against the proximal end 124 of the outer tube 108.

  Arranging the endoscope tool 110 in a controlled state at a desired distance in front of the distal end of the endoscope 101 appropriately controls the proximal end portion 123 of the guide tube 112 with respect to the proximal end 124 of the outer tube 108. It can be understood that it can be realized by arranging in a state in which it is performed.

  In accordance with one preferred embodiment of the present invention useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the balloon 116 is positioned in front of the distal end of the endoscope 101. It will be understood that it can be arranged in a controlled manner in the range of 0 to 45 cm.

  As shown in FIGS. 4A and 4B, the balloon 116 is secured to the guide tube 112 via the front balloon sleeve portion 144 and the rear balloon sleeve portion 146, both of which are in the balloon 116. It is preferable to be formed integrally. As shown in FIG. 4A, the outer cross-sectional diameter of the posterior sleeve portion 146 is larger than the inner cross-sectional diameter of the outer tube 108 and larger than the inner cross-sectional diameter of the tubular passage 109 so that the balloon 116 and the outer tube 108 and Insertion through the tubular passage 109 is prevented.

  The rear sleeve portion 146 can function as a stopper, which prevents the guide tube 112 from being pulled further when the rear sleeve portion 146 contacts the tubular sleeve 104 or the outer tube 108.

  Next, a simplified schematic view of an endoscope system that is manufactured and operable in accordance with another preferred embodiment of the present invention, and that is manufactured and operable in accordance with another preferred embodiment of the present invention. Reference is made to FIGS. 5-8D, which are simplified, schematic and cross-sectional views, respectively, of an auxiliary assembly.

  As seen in FIGS. 5-8D, CLV-100 Video System Center, CLV, all commercially available from Olympus America Inc., Corporate Center Drive Street 2, Melville, New York, 11747, USA -Adopted in conventional endoscopic systems such as U20 light source, Sony PVM-2030 video monitor, and OFP flushing pump. This system is a conventional system such as the CIF-100 video enteroscope or CF-Q160AL video colonoscope commercially available from Olympus America Inc., Corporate Center Drive Street 2, Melville, NY, 11747, USA. Preferably, a conventional endoscope 201 forming part of the endoscope system 200 is included.

  In accordance with one preferred embodiment of the present invention, an endoscope auxiliary assembly 202 comprising a peripheral balloon 203 is fixed on the distal end of the endoscope 201 and associated with the peripheral balloon 203 as shown. A tubular sleeve 204 can be mounted on the endoscope 201. The tubular sleeve 204 is made of a flexible and extensible material such as flexible and extensible silicone, latex or rubber so that the tubular sleeve conforms to the bending of the endoscope 201. It is understood that can be made possible. The tubular sleeve 204 has a non-tensioned inner diameter that is slightly smaller than the diameter of the endoscope 201 so that when the tubular sleeve is stretched, it is firmly positioned at the desired position at the distal end of the endoscope 201. It will further be appreciated that it is possible to pull and slide over the endoscope 201 while ensuring that it is positioned.

  Alternatively, the tubular sleeve 204 is manufactured from a less extensible material, such as polyurethane or nylon, and with an inner diameter that is slightly larger than the inner diameter of the endoscope 201 so that the tubular sleeve can be It may be allowed to be pulled and slid on the endoscope 201. Preferably, the tubular sleeve 204 is formed with a relatively thin wall to allow the tubular sleeve to be compliant with the bending of the endoscope 201. It will be appreciated that the tubular sleeve 204 can be fastened to the endoscope 201 by any suitable conventional means, such as a medical adhesive tape, when placed in the desired location.

  As shown in FIGS. 5-8D, the peripheral balloon 203 at least partially overlaps the tubular sleeve 204 and is secured at either end by any suitable conventional means such as adhesive, between Define a sealed volume. Preferably, expansion and contraction of the peripheral balloon 203 is provided via a tube 206 that communicates with its interior. Tube 206 can be attached to endoscope 201 by any suitable conventional means, such as medical adhesive tape, at a number of locations along its length. Alternatively, the tube 206 may be removed from the endoscope 201.

  It will be appreciated that in accordance with one preferred embodiment of the present invention, the peripheral balloon 203 is generally extensible and can be expanded to a diameter that is about 3 to 10 times greater than its diameter when not expanded. The In accordance with one preferred embodiment of the present invention, which is useful for small intestine endoscopy, the diameter of the peripheral balloon 203 when fully expanded is in the range of 3-4 cm. In a specific embodiment useful for small intestine endoscopy, the diameter of the peripheral balloon diameter when fully expanded is 4 cm. Preferably, expansion of the peripheral balloon 203 to a diameter of 4 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In another specific embodiment useful for colonoscopy, the diameter of the peripheral balloon when fully expanded is in the range of 4-6 cm. Similarly, in a further embodiment useful for colonoscopy, the diameter of the peripheral balloon when fully expanded is 6 cm. Preferably, expansion of the peripheral balloon 203 to a diameter of 6 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In accordance with one preferred embodiment of the present invention that is useful in the in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the inflation diameter range of the peripheral balloon 203 is generally the maximum tubular body part cross-sectional diameter. It is understood that the larger peripheral balloon 203 can be engaged with the inner surface of the tubular body part as a whole and the endoscope 201 can be fixed to the tubular body part. The Preferably, the peripheral balloon 203 is a relatively flexible, highly compliant balloon that is operable to at least partially conform to the shape of the inner surface when engaged with the inner surface of the generally tubular body part. It shall be.

  It will be appreciated that the peripheral balloon 203 can be formed of a suitable well-known stretchable material such as latex, flexible silicone or highly flexible nylon. Alternatively, the peripheral balloon 203 may be formed of polyurethane, which is less stretchable and less compliant than latex, flexible silicone, or highly flexible nylon. Preferably, the diameter of the peripheral balloon 203 should be sufficient to ensure tight fixation in any part of the generally tubular body part.

  In one preferred embodiment of the present invention, the endoscope auxiliary assembly 202 can comprise at least one outer tube 208. The outer tube 208 can be attached to the endoscope 201 by any suitable conventional means such as medical adhesive tape at a number of locations along its length. Alternatively, the outer tube 208 may be removable from the endoscope 201.

  It will be appreciated that the outer tube 208 is flexible and extremely bendable, allowing the outer tube to be compliant with the bending of the endoscope 201. It is further understood that the outer tube 208 can be made of a low friction material such as TEFLON®.

  In one preferred embodiment of the present invention, the outer tube 208 can be inserted through a tubular passage 209 extending longitudinally within the tubular sleeve 204. Alternatively, the tubular passage is inside the sleeve, but may be located outside the endoscope 201. The outer tube 208 can be secured to the tubular sleeve 204 by any conventional means, such as fully or partially inserted through the tubular passage 209 and using friction or a suitable adhesive. Alternatively, the outer tube 208 may be slidable with respect to the tubular passage 209.

  Endoscopic tool 210 manufactured and operable according to one preferred embodiment of the present invention extends through outer tube 208. The endoscopic tool 210 preferably includes a guide tube 212 that includes at least one first lumen 214 that expands and contracts the balloon 216 through the expansion opening 218. Preferably, the cross-sectional area of the guide tube 212 is sufficiently smaller than the cross-sectional area of the outer tube 208, particularly when the outer tube 208 is in a bent or curved state, the guide tube 212 is totally free through the outer tube 208. And allow the fluid to be supplied for expansion or to be used for other purposes and drained.

  It will be appreciated that the guide tube 212 is flexible and extremely bendable, so that the guide tube can accommodate bending of the endoscope 201 and bowel curvature. It is further understood that the guide tube 212 can be made of a low friction material, such as TEFLON.

  Preferably, the guide tube 212 seals at its distal end in front of the balloon 216 by any suitable method, such as by mechanical sealing or using a suitable adhesive, and the balloon 216 passes through the guide tube 212. Make it easy to expand and contract.

  Preferably, the endoscope tool 210 includes a tip portion 219 disposed in the distal direction of the balloon 216. The tip portion 219 can be manufactured with a 1.5 mm diameter in a very flexible tube, such as a TYGON® tube. The tip portion 219 can be connected to the end of the guide tube 212 by any conventional means such as a suitable adhesive. In one preferred embodiment of the present invention, the length of the tip portion 219 is 20-30 mm.

  The extreme bendability of the tip portion 219 is that when the endoscope tool 210 is advanced through the generally tubular body portion in front of the endoscope 201, the endoscope tool 210 is stuck with an obstacle. And it is understood to prevent bending.

It will be appreciated that, according to one preferred embodiment of the present invention, the endoscope tool 210 and the guide tube 212 are substantially more flexible than the endoscope 201.
It is further understood that the tube 206 is substantially more flexible than the endoscope 201 in accordance with one preferred embodiment of the present invention.

In accordance with yet another preferred embodiment of the present invention, it will be appreciated that the outer tube 208 is substantially more flexible than the endoscope 201.
In accordance with one preferred embodiment of the present invention, it will be appreciated that the balloon 216 is generally extensible and can be expanded to a diameter that is about 5 to 20 times greater than its diameter when not expanded. The In certain embodiments useful for small intestine endoscopy, the balloon diameter ranges from 3 to 4 cm when fully expanded. In a specific embodiment useful for small intestine endoscopy, the balloon diameter when fully inflated is 4 cm. Preferably, the expansion of the balloon 216 to a diameter of 4 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In another preferred embodiment of the invention that is useful for colonoscopy, the balloon diameter when fully inflated is in the range of 4 to 6 cm. In another specific embodiment useful for colonoscopy, the balloon diameter when fully expanded is 6 cm. Preferably, expansion of a balloon 216 with a diameter of 6 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In accordance with one preferred embodiment of the present invention, which is particularly useful for in-vivo examination of a generally tubular body part having a variable cross-sectional diameter, the expansion range of the diameter of the balloon 216 is the maximum of the overall tubular body part. It is understood that the cross-sectional diameter is greater, thereby allowing the inflated balloon 216 to engage the inner surface of the generally tubular body part and anchor the endoscopic tool 210 against the inner surface. Preferably, the balloon 216 is a relatively flexible, highly compliant balloon that is operable to at least partially conform to the shape of the inner surface when engaged with the inner surface of the generally tubular body part. Shall.

  It will be appreciated that the balloon 216 can be formed of a well-known stretchable material such as latex, flexible silicone, or highly flexible nylon. Alternatively, the balloon 216 may be formed of a polyurethane that is less extensible and conformable than latex, flexible silicone, or highly flexible nylon. Preferably, the diameter of balloon 216 should be sufficient to ensure tight anchoring at any location on the generally tubular body part.

  As shown in FIG. 5, the endoscopic tool 210 preferably includes a balloon dilation / deflation control interface 222 in communication with the guide tube 212 at the proximal portion 223, which interface is the proximal end of the outer tube 208. 224 extends outward and governs the expansion and contraction of balloon 216. In addition, a peripheral balloon expansion / deflation control interface 225 is preferably provided that communicates with the tube 206 and governs the expansion and contraction of the peripheral balloon 203.

  Preferably, the proximal end 224 of the outer tube 208 is positioned adjacent to the operator control portion 229 of the endoscope 201 by a band 232 or any other suitable conventional means such as a clip or medical adhesive tape. It is assumed that the base end portion 201 is fixed.

  Preferably, the operator pulls or pushes the proximal end portion 223 of the guide tube 212 in a controlled manner relative to the proximal end 224 of the outer tube 208, thereby allowing the endoscope 201 within the generally tubular body portion. It is assumed that the balloon 216 is disposed at a desired position in front of the distal end of the balloon.

  FIG. 8A shows a state in which the endoscope tool 210 is arranged rearward, in which the balloon 216 is arranged just in front of the distal end of the endoscope 201. The rearward placement is preferably achieved by pulling the proximal end portion 223 of the guide tube 212 backward relative to the proximal end 224 of the outer tube 208.

  FIG. 8B shows the endoscope tool 210 being placed forward, with the balloon 216 placed at a substantial distance in front of the distal end of the endoscope 201. The forward placement is preferably achieved by pushing the proximal end portion 223 of the guide tube 212 forward relative to the proximal end 224 of the outer tube 208.

  Arranging the endoscopic tool 210 in a controlled state at a desired distance in front of the distal end of the endoscope 201 can cause the proximal end portion 223 of the guide tube 212 to be appropriately positioned relative to the proximal end 224 of the outer tube 208. It is understood that this can be achieved by arranging in a controlled state.

  In accordance with a preferred embodiment of the invention that is useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the balloon 216 is in the range of 0 to 45 cm in front of the distal end of the endoscope 201. It is understood that it can be arranged in a controllable manner.

  As shown in FIGS. 8A to 8D, the balloon 216 is fixed to the guide tube 212 via the front balloon sleeve portion 244 and the rear balloon sleeve portion 246. As shown in FIG. 8C, the cross-sectional diameter of the balloon 216 and the rear sleeve portion 246 in the deflated state is smaller than the cross-sectional inner diameter of the outer tube 208 and the tubular passage 209, so Allows insertion through. It will be appreciated that the distal portion of the endoscopic tool 210, including the balloon 216 and the tip portion 219, can be fully or partially disposed within the tubular passage 209 and the outer tube 208. It is further understood that the endoscopic tool 210 can be partially and fully pulled and withdrawn from the outer tube 208 if applicable. The endoscopic tool 210 may further be inserted or reinserted through the outer tube 208, where applicable, to place or reposition the balloon 216 in front of the distal end of the endoscope 201. Understood.

  As shown in FIG. 8D, the accessory 250 can be inserted through the outer tube 208 to medically interact with a position within the generally tubular body portion in front of the distal end of the endoscope 201.

The term “medically interacting” includes, for example, examination, treatment, diagnosis, sampling, removal, labeling and any other suitable medical practice.
Accessory 250 includes any conventional accessory such as a biopsy forceps, polyp cutter, injection needle or ultrasound device. It will be appreciated that the accessory 250 can be inserted in place of or in conjunction with the endoscopic tool 210. It will further be appreciated that the accessory 250 can be inserted through an additional outer tube (not shown) when the endoscope auxiliary assembly 202 includes one or more outer tubes 208.

  Next, a simplified illustration of an endoscopic system manufactured and operable in accordance with a preferred embodiment of the present invention, and a simplified auxiliary assembly manufactured and operable in accordance with one preferred embodiment of the present invention, respectively. 9 to FIG. 12C, which are the illustrated illustrations and cross-sectional views.

  As can be understood from FIGS. 9 to 12C, a conventional endoscope system 300 such as a CV-100 video system center, a CLV-U20 light source, a Sony PVM-2030 video monitor, an OFP flushing pump is adopted. All of these are commercially available from Olympus America Incorporated, Inc., Corporate Center Street 2, Melville, USA, 11747, New York. The system is conventional, such as a CIF-100 video endoscope or a CG-Q160AL video endoscope, commercially available from Olympus America Inc., Corporate Center Street 2, Melville, NY, USA. It is preferable to include a conventional endoscope 301 that forms part of the endoscope system 300.

  In accordance with one preferred embodiment of the present invention, an endoscope auxiliary assembly 302 comprising a peripheral balloon 303 can be attached to the endoscope 301 by means of a tubular sleeve 304 as shown, the tubular sleeve being Fixed to the distal portion of the endoscope 301 and associated with the peripheral balloon 303.

  Tubular sleeve 304 is made of a flexible and stretchable material such as flexible and stretchable silicon, latex or rubber so that the tubular sleeve conforms to the bending of endoscope 301. It is understood that this can be made possible. Tubular sleeve 304 has a non-tensioned inner diameter that is slightly smaller than the diameter of endoscope 301 so that when the tubular sleeve is stretched, it is firmly positioned at the desired location at the distal end of endoscope 301. It is further understood that it can be pulled and slid over the endoscope 301 while ensuring that it does.

  Alternatively, the tubular sleeve 304 is made of a non-stretchable material, such as polyurethane or nylon, and with an inner diameter that is slightly larger than the inner diameter of the endoscope 301 so that the tubular sleeve can be viewed internally. It may be allowed to be pulled and slid on the mirror 301. Preferably, the tubular sleeve 304 is formed with a relatively thin wall thickness to allow the tubular sleeve to conform to the bending of the endoscope 301. It will be appreciated that the tubular sleeve 304 can be fastened to the endoscope 301 by any suitable conventional means, such as medical adhesive tape, when placed in the desired location.

  As shown in FIGS. 9-12C, the peripheral balloon 303 at least partially overlaps the tubular sleeve 304 and is secured at either end by any suitable conventional means such as an adhesive between them. Define a sealed volume. Preferably, the expansion and contraction of the peripheral balloon 303 is performed via a tube 306 communicating with the inside thereof. Tube 306 can be attached to endoscope 301 at a number of locations along its length by any suitable conventional means such as medical adhesive tape. Alternatively, the tube 306 may be removable from the endoscope 301.

  It will be appreciated that, in accordance with one preferred embodiment of the present invention, the balloon 303 is generally extensible and can be expanded to a diameter that is about 3 to 10 times greater than its diameter when not expanded. In accordance with one preferred embodiment of the invention that is useful for small intestine endoscopy, the diameter of the peripheral balloon 303 when fully inflated is in the range of 3 to 4 cm.

  In certain embodiments, useful for small intestine endoscopy, the diameter of the peripheral balloon when fully expanded is 4 cm. Preferably, expansion of the peripheral balloon 303 with a diameter of 4 cm or less can be achieved using a relatively low pressure, such as 30 to 70 mbar.

  In another specific embodiment useful for colonoscopy, the diameter of the peripheral balloon when fully expanded is in the range of 4-6 cm. In a further embodiment that is also useful for colonoscopy, the diameter of the peripheral balloon when fully expanded is 6 cm. Preferably, the expansion of the peripheral balloon 303 to a diameter of 6 cm or less can be achieved using a relatively low pressure, such as in the range of 30 to 70 mbar.

  In accordance with one preferred embodiment of the present invention, which is useful for in-vivo examination of a generally tubular body part having a variable cross-sectional diameter, the inflated diameter range of the peripheral balloon 303 is generally the largest cross-section of the tubular body part. It will be appreciated that the peripheral balloon 303, which is larger than the diameter and thereby inflated, generally engages the inner surface of the tubular body part and allows the endoscope 301 to be anchored to the inner surface. Preferably, the peripheral balloon 303 is a relatively flexible, highly compliant balloon that is operable to at least partially conform to the shape of the inner surface when engaged with the inner surface of the generally tubular body part. It shall be.

  It will be appreciated that the peripheral balloon 303 may be formed of a suitable well-known stretchable material such as latex, flexible silicone or highly flexible nylon. Alternatively, the peripheral balloon 303 may be formed of a polyurethane that is more extensible and less compliant than latex, flexible silicone, or highly flexible nylon. Preferably, the diameter of the peripheral balloon 303 should be sufficient to ensure tight fixation in any part of the generally tubular body part.

  In one preferred embodiment of the present invention, the endoscope holding assembly 302 can include at least one outer tube 308. The outer tube 308 can be attached to the endoscope 301 at a number of locations along its length by any suitable conventional means such as medical adhesive tape. Alternatively, the outer tube 308 may be removable from the endoscope 301.

  It will be appreciated that the outer tube 308 is flexible and extremely bendable, allowing the outer tube to be flexible with respect to the bending of the endoscope 301. It is further understood that the outer tube 308 can be made of a low friction material such as Teflon.

  In one preferred embodiment of the present invention, the outer tube 308 can be inserted through a tubular passage 309 extending longitudinally within the tubular sleeve 304. Alternatively, the tubular passage is on the inside of the sleeve, but may be located on the outside of the endoscope 301. Outer tube 308 can be secured to tubular sleeve 304 by any conventional means such as fully or partially inserted through tubular passage 309 and using friction or a suitable adhesive. Alternatively, the outer tube 308 may be slidable relative to the tubular passage 309.

  Endoscopic tool 310 structured and operable according to one preferred embodiment of the present invention extends through outer tube 308. The endoscopic tool 310 preferably includes a guide tube 312 that includes at least one first lumen 314 that expands and contracts the balloon 316 via the expansion opening 318. Preferably, the cross-sectional area of the guide tube 312 is sufficiently smaller than the cross-sectional area of the outer tube 308, particularly when the outer tube 308 is in a bent or curved state, the guide tube 312 passes through the outer tube 308 as a whole. Allow free passage and allow fluid to be supplied and drained for expansion or other applications.

  It will be appreciated that the guide tube 312 is flexible and extremely bendable and can accommodate the bending of the endoscope 301 and bowel curvature. It is further understood that the guide tube 312 can be made of a low friction material such as Teflon.

  Preferably, the guide tube 312 is sealed at the distal end in front of the balloon 316 in any suitable manner, such as using a mechanical seal or a suitable adhesive, causing the balloon 316 to expand through the guide tube 312 and It shall be easy to contract.

  Preferably, the endoscopic tool 310 can include a tip portion 319 disposed at the distal end of the balloon 316. The tip portion 319 can be formed to a 1.5 mm diameter with a very flexible tube, such as a TYGON® tube. The tip portion 319 can be connected to the distal end of the guide tube 312 by any conventional means such as a suitable adhesive. In one preferred embodiment of the invention, the length of the tip portion 319 is 20-30 mm.

  The extremely bendability of the tip 319 prevents the endoscope tool 310 from sticking and bending at the obstacle when it is advanced through the generally tubular body part in front of the endoscope 301. Understood.

It is understood that the endoscope tool 310 and guide tube 312 are substantially more flexible than the endoscope 301 in accordance with one preferred embodiment of the present invention.
It is further understood that the tube 306 is generally more flexible than the endoscope 301 in accordance with one preferred embodiment of the present invention.

In accordance with yet another preferred embodiment of the present invention, it is understood that the outer tube 308 is substantially more flexible than the endoscope 301.
It will be appreciated that in accordance with one preferred embodiment of the present invention, the balloon 316 is generally extensible and can be expanded to a diameter that is about 5 to 20 times greater than its diameter when not expanded. . In one specific embodiment that is useful for small intestine endoscopy, the balloon diameter when fully inflated ranges from 3 to 4 cm. In a specific embodiment useful for small intestine endoscopy, the balloon diameter when fully inflated is 4 cm. Preferably, expansion of balloon 316 to a diameter of 4 cm or less should be achieved using a relatively low pressure, such as in the range of 30 to 70 mbar.

  In another preferred embodiment of the invention, useful for colonoscopy, the balloon diameter when fully inflated ranges from 4 to 6 cm. In another specific embodiment useful for colonoscopy, the balloon diameter when fully expanded is 6 cm. Preferably, expansion of balloon 316 to a diameter of 6 cm or less should be achieved using a relatively low pressure, such as in the range of 30 to 70 mbar.

  In accordance with one preferred embodiment of the present invention, which is particularly useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the expanded range of the diameter of the balloon 316 is that of the generally tubular body part. It is understood that the greater than the maximum cross-sectional diameter, thereby allowing the inflated balloon 316 to engage the inner surface of the generally tubular body part and allow the endoscopic tool 310 to settle against the outer surface. . Preferably, the balloon 316 is a relatively flexible, highly compliant balloon that is operable to at least partially conform to the shape of the inner surface when engaged with the inner surface of the generally tubular body portion. Shall.

  It will be appreciated that the balloon 316 can be formed of a well-known stretchable material such as latex, flexible silicone, or highly flexible nylon. Alternatively, the balloon 316 may be made of polyurethane, which is less extensible and less compliant than latex, flexible silicone or highly flexible nylon. Preferably, the diameter of the balloon 316 should be sufficient to ensure tight anchoring at any location within the generally tubular body part.

  As can be seen in FIG. 9, the endoscopic tool 310 communicates with the guide tube 312 at its proximal portion 323 that extends outwardly from the proximal end 324 of the outer tube 308 and governs the expansion and contraction of the balloon 316. Preferably, a balloon expansion / deflation control interface 322 is included. In addition, a peripheral balloon expansion / deflation control interface 325 is preferably provided that communicates with the tube 306 and governs the expansion and contraction of the peripheral balloon 303.

  Preferably, the proximal end 324 of the outer tube 308 is endoscopically adjacent to the operator control 329 of the endoscope 301 by any other suitable conventional means such as a band 332 or clip or medical adhesive tape. It is assumed that it is fixed to the base end portion of the mirror 301.

  Preferably, the practitioner pulls or pushes the proximal end portion 323 of the guide tube 312 in a controlled manner relative to the proximal end 324 of the outer tube 308 so that the endoscope 301 is generally within the tubular body portion. It is assumed that the balloon 316 is disposed at a desired position in front of the distal end of the balloon.

  FIG. 12A shows a state in which the endoscope tool 310 is disposed rearward, with the balloon 316 disposed just in front of the distal end of the endoscope 301. The rearward placement is preferably achieved by pulling the proximal end portion 323 of the guide tube 312 rearward relative to the proximal end 324 of the outer tube 308.

  FIG. 12B shows the endoscope tool 310 being placed forward, with the balloon 316 placed at a substantial distance in front of the distal end of the endoscope 301. Preferably, the forward placement is achieved by pushing the proximal end portion 323 of the guide tube 312 forward against the proximal end 324 of the outer tube 308.

  Arranging the endoscope tool 310 at a desired distance in front of the distal end of the endoscope 301 appropriately controls the proximal end portion 323 of the guide tube 312 relative to the proximal end 324 of the outer tube 308. It is understood that this can be realized by arranging in a state in which it is performed.

  In accordance with one preferred embodiment of the invention that is useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the balloon 316 is in the range of 0 to 45 cm in front of the distal end of the endoscope 301. It is understood that the arrangement is controllable at.

  As can be seen in FIGS. 12A-12C, the balloon 316 is secured to the guide tube 312 via the front balloon sleeve portion 344 and the rear balloon sleeve portion 346. As can be seen in FIG. 12C, the cross-sectional diameter of the rear sleeve portion 346 is larger than the cross-sectional inner diameter of the outer tube 308, thereby preventing the balloon 316 from being inserted through the outer tube 308. As further understood in FIG. 12C, the cross-sectional diameter of the balloon 316 and the cross-sectional diameter of the rear sleeve portion 346 in the deflated state are smaller than the cross-sectional inner diameter of the tubular passage 309, thereby allowing the balloon 316 to pass through the tubular passage 309. Allow insertion. It will be appreciated that the distal portion of the endoscopic tool 310, including the balloon 316 and the tip portion 319, can be disposed completely or partially within the tubular passage 309.

  It is understood that the rear sleeve portion 346 can function as a stop to prevent the guide tube 312 from being pulled further when the rear sleeve portion 346 contacts the outer tube 308 within the tubular sleeve 309. .

  Next, it is structured in accordance with one preferred embodiment of the present invention and a simplified schematic illustration of an operable endoscope system and in accordance with one preferred embodiment of the present invention. 13 and 16B, which are simplified illustrations and cross-sectional views, respectively, of the subassemblies that are operable and operable.

  As can be seen in FIGS. 13-16B, a conventional endoscopic system 400, such as a console including a CV-100 video system center, a CLV-U20 light source, a Sony PVM-2030 video monitor, an OFP flushing pump, All of these are commercially available from Olympus America Incorporated, Inc., Corporate Center Drive Street 2, Melville, USA 11747, New York. The system is conventional, such as the CIF-100 video enteroscope or CF-Q160AL video colonoscope, commercially available from Olympus America Inc., Corporate Center Drive Street 2, Melville, NY, USA. Preferably, a conventional endoscope 401 that forms part of the endoscope system 400 is included.

  In accordance with one preferred embodiment of the present invention, as shown, an endoscope auxiliary assembly 402 comprising a peripheral balloon 403 can be attached to the endoscope 401 by a tubular sleeve 404, the tubular sleeve being Fixed to the distal portion of the endoscope 401 and associated with the peripheral balloon 403. Tubular sleeve 404 is made of a flexible and stretchable material such as flexible and stretchable silicon, latex or rubber so that the tubular sleeve conforms to the bending of endoscope 401. It is understood that this can be made possible. Tubular sleeve 404 has a non-tensioned inner diameter that is slightly smaller than the diameter of endoscope 401, thereby ensuring that the tubular sleeve is in the desired position at the distal end of endoscope 401 when the tubular sleeve is stretched. It is further understood that it can be pulled and slid over the endoscope 401 while ensuring that the

  Alternatively, the tubular sleeve 404 is made of a non-stretchable material such as polyurethane or nylon and with an inner diameter that is slightly larger than the inner diameter of the endoscope 401, thereby allowing the tubular sleeve to be It may be allowed to be pulled and slid on the endoscope 401. Preferably, the tubular sleeve 404 may be formed with a relatively thin wall thickness to allow the tubular sleeve to be compliant with the bending of the endoscope 401. When placed in the desired location, it is understood that the tubular sleeve 404 can be fastened to the endoscope 401 by any suitable means such as medical adhesive tape.

  As shown in FIGS. 13-16B, the peripheral balloon 403 at least partially overlaps the tubular sleeve 404 and is secured at both ends by any suitable conventional means such as an adhesive thereon. , Defining a sealed volume in between. Preferably, the expansion and contraction of the peripheral balloon 403 is performed via a tube 406 communicating with the inside thereof. The tube 406 can be attached to the endoscope 401 by any suitable conventional means such as medical adhesive tape at a number of locations along its length. Alternatively, the tube 406 may be removable from the endoscope 401.

  In accordance with one preferred embodiment of the present invention, the peripheral balloon 403 is generally extensible and can be expanded to a diameter that is about 3 to 10 times greater than its diameter when not expanded. In accordance with one preferred embodiment of the present invention that is useful for small intestine endoscopy, the diameter of the peripheral balloon 403 when fully inflated is in the range of 3-4 cm.

  In certain embodiments useful for small intestine endoscopy, the peripheral balloon diameter when fully expanded is 4 cm. Preferably, the expansion of the peripheral balloon 403 to a diameter of 4 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In another specific embodiment useful for colonoscopy, the peripheral balloon diameter when fully expanded ranges from 4 to 6 cm. Similarly, in a further embodiment useful for colonoscopy, the diameter of the peripheral portion when fully expanded is 6 cm. Preferably, expansion of the peripheral balloon 403 with a diameter of 6 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In accordance with one preferred embodiment of the present invention, useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the inflation diameter range of the peripheral balloon 403 is the maximum cross-sectional diameter of the generally tubular body part. It is understood that the larger peripheral portion 403, which is larger than this, engages the inner surface of the tubular body part as a whole and allows the endoscope 401 to settle against the inner surface. Preferably, the peripheral balloon 403 is a relatively flexible, highly compliant balloon that is operable to at least partially conform to the shape of the inner surface when engaged with the inner surface of the generally tubular body portion. Suppose that

  It will be appreciated that the peripheral balloon 403 can be formed of a suitable well-known stretchable material such as latex, flexible silicone or highly flexible nylon. Alternatively, the peripheral balloon 403 may be formed of a polyurethane that is less stretchable and less compliant than latex, flexible silicon or highly flexible nylon. Preferably, the diameter of the peripheral balloon 403 should be sufficient to ensure tight fixation in any part of the generally tubular body part.

  In one preferred embodiment of the present invention, the endoscope auxiliary assembly 402 can include at least one outer tube 408. The outer tube 408 can be attached to the endoscope 401 by any suitable conventional means such as medical adhesive tape at a number of locations along its length. Alternatively, the outer tube 408 may be removable from the endoscope 401.

  It will be appreciated that the outer tube 408 is flexible and extremely bendable, allowing the outer tube to be compliant with the bending of the endoscope 401. It is further understood that the outer tube 408 can be made of a low friction material such as TEFLON®.

  In one preferred embodiment of the present invention, the outer tube 408 can be inserted through a tubular passage 409 extending longitudinally within the tubular sleeve 404. Alternatively, the tubular passage is inside the sleeve but may be located outside the endoscope 401. The outer tube 408 can be secured to the tubular sleeve 404 by any conventional means, such as completely or partially inserted into the tubular passage 409 and using friction or a suitable adhesive. Alternatively, the outer tube 408 may be slidable relative to the tubular passage 409.

  Endoscopic tool 410 structured and operable according to one preferred embodiment of the present invention extends through outer tube 408. The endoscopic tool 410 preferably includes a guide tube 412 that includes at least a first lumen 414 that expands and contracts the balloon 416 through the expansion opening 418. The cross-sectional area of the guide tube 412 is sufficiently smaller than the cross-sectional area of the outer tube 408. In particular, when the outer tube 408 is bent or curved, the guide tube 412 passes freely through the outer tube 408 as a whole. And allow fluid supply and drainage for expansion or other applications.

  Preferably, a plurality of short hollow cylinders 420 can be disposed longitudinally within the tubular passage 409 as shown in FIGS. 16A and 16B. Adjacent hollow cylinders 420 can be separated by a space 421.

  It will be appreciated that the hollow cylinder 420 is relatively flexible and bendable and can follow the bending of the endoscope 401 and the tubular sleeve 404. Alternatively, the hollow cylinder 420 may be relatively rigid. It will be appreciated that the hollow cylinder 420 may be made of a low friction material, such as TEFLON.

Preferably, the hollow cylinder 420 guides the guide tube 412 in the tubular passage 409 and allows the guide tube 412 to pass smoothly and with low friction.
The hollow cylinder 420 supports the inner wall of the tubular passage 409 and prevents the inner wall of the tubular passage 409 from collapsing toward the guide tube 412, particularly when the endoscope 401 and the tubular sleeve 404 are bent. It is understood to prevent.

According to one preferred embodiment of the present invention, the length of the hollow tube 420 can be in the range of 5 to 25 mm, and the height of the space 421 can be in the range of 2 to 10 mm.
It will be appreciated that the guide tube 412 is flexible and extremely bendable and may allow it to adapt to the bending of the endoscope 401 and bowel curvature. It is further understood that the guide tube 412 can be made of a low friction material such as TEFLON®.

  Preferably, the guide tube 412 is sealed at its distal end in front of the balloon 416 by any suitable method, such as using a mechanical seal or a suitable adhesive, and the balloon 416 is expanded through the guide tube 412. And facilitate the contraction.

  Preferably, the endoscopic tool 410 includes a tip portion 419 disposed at the distal end of the balloon 416. The tip portion 419 can be made of a very flexible tube, such as a 1.5 mm diameter TYGON® tube. The tip portion 419 can be connected to the end of the guide tube 412 by any conventional means such as a suitable adhesive. In a preferred embodiment of the present invention, the length of the tip portion 419 is 20-30 mm.

  The extreme bendability of the tip portion 419 is that when the endoscope tool 410 is advanced through the generally tubular body portion in front of the endoscope 401, the endoscope tool 410 is stuck with an obstacle. And it is understood to prevent bending.

It will be appreciated that, according to one preferred embodiment of the present invention, the endoscope tool 410 and the guide tube 412 are substantially more flexible than the endoscope 401.
It is further understood that the tube 406 is substantially more flexible than the endoscope 401 in accordance with one preferred embodiment of the present invention.

In accordance with yet another preferred embodiment of the present invention, it will be appreciated that the outer tube 408 is substantially more flexible than the endoscope 401.
It will be appreciated that, according to one preferred embodiment of the present invention, the balloon 416 is expandable as a whole and can be expanded to a diameter that is about 5 to 20 times greater than its diameter when not expanded. In certain embodiments useful for small intestine endoscopy, the balloon diameter when fully inflated ranges from 3 to 4 cm. In a specific embodiment useful for small intestine endoscopy, the balloon diameter when fully inflated is 4 cm. Preferably, expansion of balloon 416 to a diameter of 4 cm or less should be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In another preferred embodiment of the invention that is useful for colonoscopy, the balloon diameter when fully inflated is in the range of 4 to 6 cm. In another specific embodiment that is useful for colonoscopy, the balloon diameter when fully expanded is 6 cm. Preferably, expansion of a balloon 416 having a diameter of 6 cm or less can be achieved using a relatively low pressure, such as in the range of 3 to 7 kPa (30 to 70 mbar).

  In accordance with one preferred embodiment of the present invention, which is particularly useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the expansion range of the diameter of the balloon 416 is the maximum of the overall tubular body part. It is understood that the cross-sectional diameter is larger, thereby allowing the inflated peripheral balloon 416 to engage the inner surface of the generally tubular body part and to fix the endoscopic tool 410 to the inner surface. The Preferably, the balloon 416 is a relatively flexible, highly compliant balloon that is operable to at least partially conform to the shape of the inner surface when engaged with the inner surface of the generally tubular body portion. It shall be.

  It will be appreciated that the balloon 416 can be formed of a well-known stretchable material, such as latex, flexible silicone, or highly flexible nylon. Alternatively, the peripheral balloon 416 may be formed of a polyurethane that is less stretchable and less compliant than latex, flexible silicone, or highly flexible nylon. Preferably, the diameter of the balloon 416 should be sufficient to ensure tight fixation at any location of the generally tubular body part.

  As can be seen in FIG. 13, the endoscopic tool 410 preferably includes a balloon dilatation / deflation control interface 422 that communicates with the guide tube 412 at its proximal portion 423, which control interface is external. Extends outwardly from the proximal end 424 of the tube 408 and governs the expansion and contraction of the balloon 416. Further, a peripheral balloon expansion / deflation control interface 425 is preferably provided in communication with the tube 406 to govern the expansion and contraction of the peripheral balloon 403.

  Preferably, the proximal end 424 of the outer tube 408 is adjacent to the practitioner control 429 of the endoscope 401 by any other suitable conventional means, such as a band 432 or a clip or medical adhesive tape. It is assumed that the base end portion of the endoscope 401 is fixed.

  Preferably, the practitioner pulls or pushes the proximal end portion 423 of the guide tube 412 in a controlled manner relative to the proximal end 424 of the outer tube 408 so that the endoscope 401 within the generally tubular body portion is positioned. It is assumed that the balloon 416 is disposed at a desired position in front of the end.

  FIG. 16A shows a rearward arrangement state of the endoscope tool 410 in which the balloon 416 is arranged at a position just above the distal end of the endoscope 401. The rearward arrangement is realized by pulling the proximal end portion 423 of the guide tube 412 rearward with respect to the proximal end 424 of the outer tube 408.

  FIG. 16B shows the endoscope tool 410 being placed forward, with the balloon 416 placed at a substantial distance in front of the distal end of the endoscope 401. The forward placement is preferably achieved by pushing the proximal end portion 423 of the guide tube 412 forward against the proximal end 424 of the outer tube 408.

  Arranging the endoscopic tool 410 in a controlled state at a desired distance in front of the distal end of the endoscope 401 is controlled appropriately for the proximal end portion 423 of the guide tube 412 relative to the proximal end 424 of the outer tube 408. It is understood that this can be realized by arranging in a state in which they are connected.

  In accordance with one preferred embodiment of the present invention, useful for in vivo examination of a generally tubular body part having a variable cross-sectional diameter, the balloon 416 is in the range of 0 to 45 cm in front of the distal end of the endoscope 401. It is understood that it can be arranged in a controllable manner.

  As can be seen in FIGS. 16A-16B, the balloon 416 is secured to the guide tube 412 via a front balloon sleeve portion 444 and a rear balloon sleeve portion 446. As can be seen in FIG. 16A, the cross-sectional diameter of the rear sleeve portion 446 is larger than the cross-sectional inner diameter of the outer tube 408 and the cross-sectional inner diameter of the tubular passage 409, thereby allowing the balloon 416 to pass through the outer tube 408 and the tubular passage 409. Prevent insertion.

  It is understood that the rear sleeve portion 446 can function as a stop to prevent the guide tube 412 from being further pulled when the rear sleeve portion 446 contacts the tubular sleeve 404 or the outer tube 408. The

  In general, according to one preferred embodiment of the present invention, which is useful for in-vivo examination of tubular body parts, an additional accessory 450 is placed in a position in front of the distal end of the endoscope 401 and the generally tubular body part. It can be inserted through the instrument passage 460 of the endoscope 401 to interact medically. Accessory 450 can include any conventional accessory such as a biopsy forceps, polyp cutter, needle, or ultrasound device.

  It will be appreciated that an accessory 450 may be provided in place of or in addition to the endoscopic tool 410. The accessory 450 can act simultaneously within the generally tubular body part or can act alternately with the endoscopic auxiliary assembly 402 and the endoscopic tool 410.

  Next, FIGS. 17A, 17B, and 17C are simplified views of the endoscope auxiliary assembly 402 and the endoscope tool 410 of FIGS. 13 to 16B in various operable orientations within the large intestine. 17D, 17E, 17F, 17G, 17H, 17I, and 17J will be described. In the illustrated embodiment, the desired orientation of the front end of the endoscope tool 410 is achieved by appropriately displacing the tool axially through the outer tube 408 of the endoscope auxiliary assembly 402.

  As can be seen in FIG. 17A, the endoscope tool 410 is positioned adjacent to the distal end of the endoscope 401 and the balloon 416 is short in front of the distal end of the endoscope 401 in a deflated state. Projects by distance. As can be appreciated, the peripheral balloon 403 is in a deflated state.

FIG. 17B shows a peripheral balloon 403 that engages the inner wall of the intestine and is in an expanded state, thereby anchoring the endoscope 401.
FIG. 17C shows the endoscope tool 410 being advanced through the intestine due to pushing the tool forward relative to the endoscope in a conventional manner.

  FIG. 17D shows the expanded state of the balloon 416. In accordance with one preferred embodiment of the present invention, this expansion will anchor the front end of the endoscopic tool 410 to the intestine at the location of the balloon 416.

FIG. 17E shows a state in which the guide tube 412 of the endoscope tool 410 is tensioned by pulling the guide tube 412.
FIG. 17F shows the deflated state of the peripheral balloon 403.

  FIG. 17G shows an endoscope 401 pushed forward along the guide tube 412 using the guide tube 412 as a guide wire in a conventional manner. By pulling on the guide tube 412 while the balloon 416 is in an expanded state and thus secured to the intestine, alternatively or in parallel with pushing the endoscope 401 The endoscope tool 410 can be pulled by pulling with the guide tube 412.

FIG. 17H shows a state in which the peripheral balloon 403 is expanded and engaged with the inner wall of the intestine, thereby fixing the endoscope 401.
Thereafter, as shown in FIG. 17I, the endoscope 401 and the endoscope tool 410 can be pulled together while being anchored to the inner wall of the intestine. This pulling action allows a portion of the intestine to punch over a portion of the endoscope 401 as shown.

Thereafter, as shown in FIG. 17J, the balloon 416 can be deflated.
Further advancement of the endoscope through the intestines, preferably to a position where the distal end of the endoscope 401 is located just behind the balloon 416, similar to the orientation shown in FIG. 17B, depends on the geometry encountered. As required, this can be accomplished by repeating some or all of the steps described above with respect to FIGS. 17B-17J.

  Similarly, retracting the endoscope through the intestine has been described above with respect to FIGS. 17B-17J in a different order and preferably in the reverse order, as required by the geometry encountered. It can be realized by repeating some or all of the steps.

  Expansion air can be supplied to the interior of the intestine midway between the peripheral balloon 403 and balloon 416 in some or all of the possible orientations described above, corresponding to FIGS. 17A-17J. Is understood. In particular, the dilatation air is sealed in the middle between two balloons whose intestines are expanded as a whole, with the peripheral balloon 403 in an operable orientation corresponding to FIGS. 17D, 17E, 17H and 17I. It can be fed inside the intestine intermediate the balloon 416. The air for dilation is a peripheral balloon in an operable orientation corresponding to FIGS. 17B, 17C, 17F, 17G, and 17J, where the intestine is partially sealed as a whole in the middle of the two balloons. It can be fed into the intestine halfway between 403 and balloon 416.

  Defining the intestine in the region between the two balloons achieves the operable orientation described above, corresponding to FIGS. 17A-17J, and allows the endoscope 401 and endoscope tool 410 to enter the intestine. It is understood that it is possible to help move forward in general.

  The airflow is well known and commonly implemented in conventional endoscopy, through the instrument passage 460 or through the outer tube 408, and the volume between the guide tube 412 and the outer tube 408. Through the intestinal volume between the two balloons. Alternatively, the endoscope auxiliary assembly 402 can include one or more outer tubes 408, and in such cases, additional outer tubes (in the intestinal volume between the two balloons ( Air flow may be provided through (not shown).

  In any device comprising two expandable balloons that advance along each other and generally within the intestine in the intestine, the expansion of the generally tubular body part, specifically 2 It will be appreciated that dilatation of the intestine between two balloons can also aid in balloon advancement.

  It is understood that any other fluid can be supplied to the intestine between the two balloons. For example, as the intestine expands and engages the inner wall of the intestine, as shown in FIGS. 17D, 17E, 17H, and 17I, liquid is supplied midway between the two balloons, thereby delivering the liquid. It can be contained within the intestinal volume between the two balloons. Such a liquid may be a pharmaceutical or other therapeutic liquid, a cleaning liquid, a contrast agent, an ultrasound medium or another suitable type of liquid.

  If applicable, instead of liquid, the endoscope 401 or endoscope tool 410 is advanced by acting on the intestine in the middle of two balloons of vacuum pressure instead of liquid to aspirate. It will be appreciated that it may be possible to assist in washing body fluids during the course of performing or endoscopy.

  Next, FIGS. 18A and 18B are simplified views of the embodiment of FIGS. 13-16B in an operating mode that is useful for in vivo examination, diagnosis, sampling or treatment of a generally tubular body part. 18B will be described. As shown in FIG. 18A, the peripheral balloon 403 is expanded and engages the inner wall of the generally tubular balloon portion, thereby anchoring the endoscope 401. Similarly, balloon 416 expands and engages the inner wall of the generally tubular body part, thereby anchoring endoscopic tool 410.

  FIG. 18A further shows a target location 470 on the inner wall of the generally tubular body part, positioned between the peripheral balloon 403 and the balloon 416. As can be seen in FIG. 18B, the endoscopic tool 410 is pulled by pulling the guide tube 412 while still being anchored to the inner wall of the generally tubular body part, thereby causing the peripheral balloon 403 and A generally tubular body part intermediate the balloon 416 can be repositioned toward the distal end of the endoscope 401. This movement facilitates access to the target location 470 by the accessory 450 and thereby allows medical interaction with the target location 470 such that the accessory 450 is applicable.

  It will be appreciated by persons skilled in the art that the present invention is not limited to what has been particularly shown and described hereinabove. The scope of the present invention includes both the various feature combinations and secondary combinations described above, and will be devised by those skilled in the art upon reading the above description, and is not in the prior art. The modification example is included.

Embodiments of the invention described in the parent application of the present application will be described below.
(First aspect)
In the endoscope assembly,
An endoscope,
An outer tube extending along the endoscope and defining at least one lumen;
An endoscopic assembly comprising an endoscopic tool adapted to move through the at least one lumen of the outer tube and including a selectively expandable balloon.
(Second aspect)
The endoscope assembly according to the first aspect, wherein the selectively expandable balloon is an anchoring balloon.
(Third aspect)
In the endoscope assembly according to any one of the first and second aspects, the endoscope tool is an endoscope assembly that can be bent in front of the outer tube.
(Fourth aspect)
The endoscope assembly according to any one of the first to third aspects is an endoscope assembly in which the endoscope tool is expandable in front of the endoscope.
(5th aspect)
The endoscope assembly according to any one of the first to fourth aspects is an endoscope assembly in which the endoscope tool is generally more flexible than the endoscope.

(Sixth aspect)
The endoscope assembly according to any one of the first to fifth aspects is an endoscope assembly that also includes an endoscope that functionally cooperates with the endoscope.
(Seventh aspect)
The endoscope assembly according to any one of the first to sixth aspects, further comprising a balloon dilation / deflation controller.
(Eighth aspect)
The endoscope assembly according to any one of the first to seventh aspects, wherein the outer tube is an endoscope assembly configured to allow insertion and removal of the endoscope tool.
(Ninth aspect)
The endoscope assembly according to any one of the first to eighth aspects is an endoscope assembly in which the endoscope tool includes a tube portion and a tip portion.
(Tenth aspect)
The endoscope assembly according to the ninth aspect is an endoscope assembly in which the distal end portion is generally more flexible than the tube portion.

(Eleventh aspect)
In endoscopic tools,
A tube part,
A tip portion;
A selectively expandable balloon,
An endoscopic tool adapted to move through the lumen of an outer tube.
(Twelfth aspect)
In the endoscope tool according to the eleventh aspect, the distal end portion is an endoscope tool that is generally more flexible than the tube portion.
(13th aspect)
The endoscope tool according to any one of the eleventh and twelfth aspects, wherein the expandable balloon is an endoscope tool attached to the tube portion.
(14th aspect)
The endoscope tool according to any one of the eleventh to thirteenth aspects, wherein an inner portion of the expandable balloon communicates with an inner portion of the tube portion, and the expandable balloon is expanded through the tube portion. It is an endoscopic tool that can make it possible.
(15th aspect)
The endoscope tool according to any one of the eleventh to fourteenth aspects, is an endoscope tool in which the balloon is a fixing balloon.

(Sixteenth aspect)
In a device that interacts medically with a tubular body part,
At least one tube comprising at least a first and a second lumen;
A front selectively expandable balloon in fluid communication with the first lumen, wherein the front selectively expandable is adapted to engage the tubular body part when expanded. Possible balloons,
A controller adapted to selectively expand the front selectively expandable balloon;
A device that medically interacts with a tubular body part comprising an accessory that can be inserted through the second lumen to a position behind the selectively expandable balloon in the front.
(17th aspect)
The apparatus for medically interacting with a tubular body part according to the sixteenth aspect, wherein the at least one tube comprises an endoscope and medically interacts with the tubular body part.
(18th aspect)
The apparatus for medically interacting with a tubular body part according to the seventeenth aspect, wherein the endoscope medically interacts with the tubular body part including an instrument passage defining the second lumen. It is a device to do.

(19th aspect)
An apparatus for medically interacting with a tubular body part according to any one of the sixteenth to eighteenth aspects, wherein the at least one tube defining the first lumen extends slidably therethrough. A medically interacting device with a tubular body part.
(20th aspect)
The apparatus for medically interacting with a tubular body part according to the sixteenth aspect, wherein the at least one tube extends slidably through an endoscope, an outer tube, and the outer tube. A device that medically interacts with a tubular body part comprising a balloon dilation tube defining a lumen.
(21st aspect)
The apparatus for medically interacting with a tubular body part according to the twentieth aspect, wherein the balloon expansion tube is medically interacting with the tubular body part, which is generally more flexible than the endoscope. It is a working device.
(Twenty-second aspect)
26. The apparatus for medically interacting with a tubular body part according to any one of the sixteenth to twenty-first aspects, wherein said front selectively expandable balloon is a fixation balloon and medically interacting with said tubular body part. It is a working device.
(23rd aspect)
The apparatus for medically interacting with a tubular body part according to any one of the seventeenth to twenty-second aspects, wherein the front selectively expandable balloon is selectively positionable in front of an endoscope. A device that interacts medically with a tubular body part.

(24th aspect)
Apparatus for medically interacting with a tubular body part according to any one of the sixteenth to 23rd aspects, also comprising a rear selectively expandable balloon, medically interacting with the tubular body part It is.
(25th aspect)
24. The apparatus for medically interacting with a tubular body part according to the twenty-fourth aspect, wherein the rear selectively expandable balloon is a fixation balloon. .
(26th aspect)
24. A device for medically interacting with a tubular body portion according to any one of the twenty-fourth and twenty-fifth aspects, wherein the rear selectively expandable balloon is attached at its periphery to the distal portion of the endoscope. A device that interacts medically with a tubular body part.

1 is a simplified schematic illustration of an endoscopic system constructed and operable in accordance with one preferred embodiment of the present invention. FIG. FIG. 2 is a simplified schematic diagram illustrating a portion of an endoscope and auxiliary assembly constructed and operable in accordance with one preferred embodiment of the present invention. 1 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with one preferred embodiment of the present invention. FIG. 1 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with one preferred embodiment of the present invention. FIG. 1 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with one preferred embodiment of the present invention. FIG. 1 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with one preferred embodiment of the present invention. FIG. FIG. 3 is a simplified schematic illustration of an endoscope system constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 3 is a simplified schematic view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with another preferred embodiment of the present invention. FIG. 6 is a simplified schematic illustration of an endoscope system constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified schematic diagram illustrating a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified schematic illustration of an endoscope system constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified schematic diagram illustrating a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 6 is a simplified cross-sectional view showing a portion of an endoscope and auxiliary assembly constructed and operable in accordance with yet another preferred embodiment of the present invention. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of various functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of the functions that can be provided by the system of FIGS. 13-16B. FIG. 17 is a simplified diagram of the functions that can be provided by the system of FIGS. 13-16B.

Claims (4)

An endoscopic tool for using an endoscope (101) in a tubular body part, the endoscopic tool comprising:
A tube portion (112);
A tip portion (119);
A selectively inflatable balloon (116) attached at a rear balloon sleeve portion (146) on the tube portion (112) and a front balloon sleeve portion (144) on the tip portion (119); With
The tube portion (112) is more flexible and bendable than the endoscope (101), thereby being able to adapt to the curvature of the tubular body portion;
The tip portion (119) is more flexible than the tube portion (112), thereby guiding the tube within the tubular body portion in front of the endoscope and the tubular portion. when advanced through the body part, so as to prevent the bend fixed obstacles and, Ri extremely bendable der like can be operated,
An endoscopic tool , wherein an outer cross-sectional diameter of the rear balloon sleeve portion (146) is larger than an inner cross-sectional diameter of an outer tube (108) attached to the endoscope (101) .   The endoscopic tool according to claim 1, wherein the endoscopic tool is adapted to move through a lumen of an outer tube.   The endoscopic tool according to claim 1 or 2, wherein an inner portion of the inflatable balloon is adapted to allow the inflation of the inflatable balloon through the tube portion. An endoscopic tool in communication with the inner part.   The endoscope tool according to any one of claims 1 to 3, wherein the balloon is a fixed balloon.

Images