FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003
COMPLETE SPECIFICATION
(See Section 10 and Rule 13)
AN ENDOSCOPE
BIORAD MEDISYS PRIVATE LIMITED
AN INDIAN COMPANY HAVING OFFICE ADDRESS AT
Survey No. 48, 3 & 48 7, Pashan - Sus Rd, Sus, Pune,
Maharashtra 411021
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE
SUBJECT MATTER AND THE MANNER IN WHICH IT IS TO BE PERFORMED.
2
TECHNICAL FIELD
[001] The present invention relates generally to the field of medical
devices. More particularly, the invention relates to an endoscope device that
can be used for diagnostic and therapeutic procedures having a bending
5 section provided on a distal end side of an insertion portion of the device
using a bending operation unit.
BACKGROUND
[002] Endoscopes are medical devices that allow physicians to examine
and treat various body cavities and organs, such as the gastrointestinal
10 tract, the respiratory tract, and the urinary tract. Endoscopes typically
consist of three parts: a control section, an insertion section, and a connector
section. The control section is held by the physician and contains the
controls for manipulating the endoscope, such as angulation knobs, suction
valves, and biopsy forceps. The insertion section is the flexible part that is
15 inserted into the body and contains a camera, a light source, and channels
for irrigation, suction, and accessories. The connector section connects the
endoscope to external devices, such as a video system.
[003] One of the challenges in endoscopy is to control and navigate the
bending section at the distal end of the catheter through the complex and
20 tortuous anatomy of the body cavities and organs to achieve optimal
visualization and access to the target area. Conventional endoscope devices
use dial controls or knobs or joystick on the handle section to manipulate
the bending section. The angulation knobs are connected to wires that run
through the insertion section and pull or release the bending section
25 accordingly. However, this conventional method of bending has several
limitations and drawbacks such as the knobs are not intuitive and
ergonomic. The angulation knobs require precise coordination and fine

motor skills to achieve the desired bending angle and direction, which can
be challenging for novice or inexperienced endoscopists. Moreover, these
controls have limited range of motion and do not allow for precise and
smooth articulation of the bending section to navigate through curved or
5 branched lumens.
[004] To overcome these limitations and drawbacks, some alternative
methods of bending have been proposed in the prior art, such as using a
controller or a lever or a joystick to bend the bending section of the
endoscope. These methods aim to provide more intuitive, ergonomic, and
10 versatile ways of manipulating the endoscope. However, these methods
also have some problems and disadvantages.
[005] There is, therefore, a need for an improved endoscope device that
can provide better maneuverability to bend the bending section that can
address these problems and disadvantages. This invention is therefore
15 directed towards providing an improved endoscopic bending operation
unit, which is relatively simple in design and structure, and is highly
effective for its intended purpose.
OBJECTIVES
20 [006] An object of the present invention is to provide a control lever on the
handle of endoscope that is easy to operate with one hand and provides
intuitive control over the bending angle and direction of the bending
section.
[007] Another object of the present invention is to provide a control lever
25 on the handle of endoscope that has a wide range of motion and can bend
the bending section in multiple dimensions (up-down, left-right, and
forward-backward), which can enable more flexible navigation through
complex anatomy.
4
[008] Yet another object of the invention is to provide a control lever on
the handle of endoscope that allows for locking or maintaining the bending
angle or direction of the bending section, which can prevent unwanted
movement or slippage of the endoscope during insertion or withdrawal.
5 [009] Another object of the invention is to provide a fluid mechanism to
control the flow in the irrigation conduit and suction conduit.
SUMMARY
[0010] Embodiments of the present disclosure present technological
10 improvements as solutions to one or more of the above-mentioned technical
problems.
[0011] Before the present subject matter relating to an endoscope, it is to be
understood that this application is not limited to the particular system
described, as there can be multiple possible embodiments which are not
15 expressly illustrated in the present disclosure. It is also to be understood
that the terminology used in the description is for the purpose of describing
the implementations or versions or embodiments only and is not intended
to limit the scope of the present subject matter.
[0012] This summary is provided to introduce aspects related to the
20 endoscope. This summary is not intended to identify essential features of
the claimed subject matter nor is it intended for use in determining or
limiting the scope of the present subject matter.
[0013] In an embodiment of a present invention, an endoscope is disclosed.
The endoscope comprises a handle, a control mechanism and a fluid
25 mechanism. The handle is a hollow structure. The handle comprises a
plurality of outlets disposed on a later surface. A control mechanism is
mounted on one end of the handle. The control mechanism is configured to
articulate a bending section. The control mechanism comprises a catheter.

A first end of the catheter is coupled to the handle and a second end of the
catheter comprises a distal end and the bending section. The control
mechanism is connected to the distal end via a plurality of steering wires.
A fluid mechanism is disposed inside the handle and the catheter. The fluid
5 mechanism comprises a plurality of conduits coupled between the distal
end and the plurality of outlets. The plurality of conduits comprises a
suction conduit and an irrigation conduit.
[0014] In another embodiment of the present invention a fluid mechanism
in an endoscope is disclosed. The fluid mechanism is disposed inside a
10 handle and a catheter. The fluid mechanism comprises a plurality of
conduits coupled between a distal end, a plurality of out lets and a channel
port. The plurality of conduits comprises a suction conduit and an
irrigation conduit. The channel port is connected to the suction conduit and
the irrigation conduit.
15 [0015] This summary is provided to introduce aspects related to the
endoscope. This summary is not intended to identify essential features of
the claimed subject matter nor is it intended for use in determining or
limiting the scope of the present subject matter.
[0016] Additional aspects, advantages, features and objects of the present
20 disclosure would be made apparent from the drawings and the detailed
description of the illustrative embodiment.
[0017] It will be appreciated that features of the present disclosure are
susceptible to being combined in various combinations without departing
from the scope of the present disclosure as defined by the below mentioned
25 detailed description and drawings.
6
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0018] The foregoing detailed description of embodiments is better
understood when read in conjunction with the appended drawings. For the
purpose of illustrating the disclosure, there is shown in the present
5 document example constructions of the disclosure; however, the disclosure
is not limited to the specific system or method disclosed in the document
and the drawings.
[0019] The present disclosure is described in detail with reference to the
accompanying figures. In the figures, the left-most digit(s) of a reference
10 number identifies the figure in which the reference number first appears.
The same numbers are used throughout the drawings to refer various
features of the present subject matter.
[0020] Figure 1 illustrates a perspective view of a cholangioscope device in
accordance with an exemplary embodiment of the present disclosure.
15 [0021] Figures 2 illustrates an exploded view of a cholangioscope device in
accordance with an exemplary embodiment of the present disclosure.
[0022] Figures 3 illustrates an enlarged perspective view of bending section
of a cholangioscope device in accordance with exemplary embodiment of
the present disclosure.
20 [0023] Figure 4 illustrates a perspective section view cholangioscope device
in accordance with an exemplary embodiment of the present disclosure.
[0024] Figures 5(a) and 5(b) illustrates a sectional view of a cholangioscope
device in unlock and lock position in accordance with an exemplary
embodiment of the present disclosure.
25 [0025] In the above accompanying drawings, a non-underlined number
relates to an item identified by a line linking the non-underlined number to
the item. When a number is non-underlined and accompanied by an

associated arrow, the non-underlined number is used to identify a general
item at which the arrow is pointing.
[0026] Further, the figures depict various embodiments of the present
subject matter for purposes of illustration only. One skilled in the art will
5 readily recognize from the following discussion that alternative
embodiments of the structures and methods illustrated herein may be
employed without departing from the principles of the present subject
matter described herein.
DETAILED DESCRIPTION
10 [0027] Some embodiments of this disclosure, illustrating all its features, will
now be discussed in detail. The words "comprising," "having," "containing,"
and "including," and other forms thereof, are intended to be equivalent in
meaning and be open ended in that an item or items following any one of
these words is not meant to be an exhaustive listing of such item or items,
15 or meant to be limited to only the listed item or items. It must also be noted
that as used herein and in the appended claims, the singular forms "a," "an,"
and "the" include plural references unless the context clearly dictates
otherwise. Although an endoscope, similar or equivalent to those described
herein can be used in the practice or testing of embodiments of the present
20 disclosure, the exemplary, the endoscope is now described.
[0028] For purposes of the present specification and claims, various
relational terms like “top” “bottom,” “proximal,” “distal,” “upper,”
“lower,” “front,” and “rear” are used to describe the present invention
when the invention is positioned in or viewed from a given orientation. It
25 is to be understood that, by altering the orientation of the invention, certain
relational terms may need to be adjusted accordingly.
[0029] The person skilled in the art will recognize many variations,
alternatives, and modifications of the embodiment of the present disclosure.
8
It should be understood that this invention is not limited to the particular
methodology, protocols, and the like, described herein and as such may
vary. The terminology used herein is for the purpose of describing
particular embodiment only and is not intended to limit the scope of the
5 present invention, which is defined solely by the claims.
[0030] Various modifications to the embodiment will be readily apparent to
those skilled in the art and the generic principles herein may be applied to
other embodiments. For example, although the present disclosure will be
described in the context of the endoscope, one of ordinary skill in the art
10 will readily recognize that the endoscope can be utilized to maintain the
bending angle or direction of the bending section during insertion or
withdrawal. Thus, the present disclosure is not intended to be limited to the
embodiments illustrated but is to be accorded the widest scope consistent
with the principles and features described herein.
15 [0031] The embodiments of the present disclosure provides an endoscope
device that comprises a handle portion, a joystick-like control lever, and a
catheter. The control lever allows the user to manipulate the bending
portion at the distal end of the catheter in 360 degrees. The control lever acts
as a torque multiplier and controls the distal tip of the catheter by applying
20 differential pull on multiple steering wires.
[0032] Conventional endoscope devices use dial controls or knobs or
joystick on the handle section to manipulate the bending section. The
angulation knobs are connected to wires that run through the insertion
section and pull or release the bending section accordingly. However, this
25 conventional method of bending has several limitations and drawbacks
such as the knobs are not intuitive and ergonomic. The angulation knobs
require precise coordination and fine motor skills to achieve the desired
bending angle and direction, which can be challenging for novice or
inexperienced endoscopists. Moreover, these controls have limited range of

motion and do not allow for precise and smooth articulation of the bending
section to navigate through curved or branched lumens. Some alternative
methods are used for bending in the prior art. These methods aim to
provide more intuitive, ergonomic, and versatile ways of manipulating the
5 endoscope. However, these methods also have some problems and
disadvantages. The present disclosure provides an improved endoscope
device that can provide better maneuverability to bend the bending section
that can address these problems and disadvantages. This invention is
therefore directed towards providing an improved endoscopic bending
10 operation unit, which is relatively simple in design and structure, and is
highly effective for its intended purpose.
[0033] In an embodiment of a present invention, an endoscope is disclosed.
The endoscope comprises a handle and a catheter. The handle comprises a
base plate and a top plate. The base plate is secured in the handle. The base
15 plate comprises plurality of conduits provided on a periphery of the base
plate equidistantly. The base plate is configured to act like anchor points for
plurality of steering wires and provide a centre for rotation of the control
lever.
[0034] The top plate is coupled to the base plate via a universal joint. The
20 top plate is configured to rotate freely around the universal joint. The
universal joint is configured to provide rotation of the top plate around two
axes. The top plate comprises a spider, a cup and a control lever. The spider
comprises plurality of steering wires in a square configuration. The spider
comprises a screw at a first end. The plurality of steering wires are passed
25 through the plurality of conduits. A plurality of guide pins are coupled
inside the handle. The plurality of guide pins guide the plurality of steering
wires for articulation when the control lever is moved by the physician. The
cup is disposed on the spider. The cup is a hollow hemispherical structure.
The control lever is coupled to the cup. The control lever is coupled to the
10
top plate using the screw. The control lever is configured to rotate the top
plate around the universal joint. The control lever acts as a torque multiplier
and controls the distal tip of the catheter by applying differential pull on
plurality of steering wires. The control lever locks the position of a bending
5 section via a top plate using friction locking.
[0035] The catheter is a tubelike structure. The catheter comprises a rigid
structure and a flexible structure. The flexible structure is configured to
articulate. A first end of the catheter is coupled to the handle and a second
end of the catheter comprises a distal end. The plurality of steering wires
10 are passed through the catheter and coupled to the distal end. During an
operation, a movement of the control lever articulates a bending section at
a distal end by applying differential pull on the plurality of steering wires.
[0036] A fluid mechanism is disposed inside the handle and the catheter.
The fluid mechanism comprises a plurality of conduits coupled between the
15 distal end and the plurality of outlets. The plurality of conduits comprises
a suction conduit and an irrigation conduit. The handle further comprises
an instrument channel. The distal end comprises a camera, an LED port and
a channel port. The channel port is connected to the suction conduit and the
irrigation conduit.
20 [0037] It should be noted that the above advantages and other advantages
will be better evident in the subsequent description. Further, in the
subsequent section the present subject is better explained with reference to
the figures.
[0038] The following table illustrates lists of nomenclature and
25 numberings that are used in the figure to illustrate the invention, and the
nomenclature is further used to describe in the invention the subsequent
paragraph.

Number Nomenclature Number Nomenclature
100 Device 208 Base plate
102 Handle 210 Top plate
104 Catheter 216 Spider
106 Distal tip 212 Conduit
108 Bending
section 214 Plurality of
steering wires
110
Instrument
channel
opening
302 Instruments
channel port
112 Control lever 304 LED port
114 Lock lever 402 Suction
connector
116 Lateral
surface 404 Irrigation
connector
202 Cup
406 Articulation
lever cap
204 Universal
joint 408 Plurality of
guide pins
12
206 Screw 214 a, 214 d Upper
steering wires
214 a,214 c
Lower
steering wires
[0039] Referring now to the drawings, Figures. 1-5 illustrates
cholangioscope device with a joystick lever having multiple steering wires.
It should be noted that Figure 1-5 are merely examples. A person skilled in
the art will recognize many variations, alternatives, and modifications of
5 the embodiments of the present disclosure.
[0040] Referring now to the drawings, Figure 1 illustrates an embodiment
of the cholangioscope device 100 according to the present invention is
shown. The device comprises a handle 102, a catheter 104, an instrument
channel opening 110, a joystick like control lever 112 to articulate bending
10 section 108, and a lock lever 114 to lock the bending section 108. The handle
102 is adapted to be held by the user’s hand and provides a comfortable
grip. The handle 102 may also include one or more buttons or switches (not
shown) that can activate or deactivate various functions or modes of
operation of the device, such as illumination, image capture, video
15 recording, or irrigation. The joystick-like control lever 112 is mounted on
the handle 102 and is movable in multiple direction that allows the user to
manipulate the bending section 108 at the distal end of the catheter 104 in
360 degrees. The control lever 114 acts as a torque multiplier and controls
the distal tip 106 of the catheter 104 by applying differential pull on multiple
20 steering wires. The catheter 104 is a hollow tubelike structure. The catheter
104 comprises a rigid structure and a flexible structure. The flexible
structure of the catheter is configured to articulate. The catheter 104
comprises a first end and a second end. The first end of the catheter is

coupled to the handle and the second end of the catheter comprises a distal
end 106.
[0041] Figure 2 illustrates the exploded view of the plurality of steering
wires joystick assembly. The joystick assembly comprises a base plate 208
5 and a top plate 210. The base plate 208 is secured in the handle 102. The base
plate 208 comprises plurality of conduits 212 provided on the periphery of
the base plate 208 equidistantly. The top plate 210 is coupled to the base
plate 208 via a universal joint 204. The top plate 210 comprises a spider, a
cup 202 and a control lever 112. The spider comprises plurality of steering
10 wires 214 in a square configuration. The plurality of steering wires 214 are
passed through the plurality of conduits 212 and wound around a pulley
216 on the top plate 210. The cup 202 is disposed on the spider. The cup 202
is a hollow hemispherical structure. The control lever 112 is coupled to the
cup 202. The control lever 112 is configured to rotate the top plate 210
15 around the universal joint 204. The control lever 112 can be controlled with
thumb or finger tips. The universal joint is configured to provide rotation
of the top plate 210 around two axes and allows spherical movement of the
control lever 112 and restricts twisting. The control lever 112 is configured
to act as a torque multiplier and control the distal tip 106 of the catheter by
20 applying differential pull on plurality of steering wires 214. The joystick
base plate 208 provides a center for rotation of the control lever 112 and also
acts like anchor points for steering wires 214. The steering wires 214 are
carried through the catheter tubing 104 and attached to the distal tip 106.
[0042] Fig 3 illustrates the enlarged view of the plurality of wires catheter
25 distal tip 106. The distal tip 106 comprises of instruments channel port 302,
a plurality of steering wires 214 and a camera and LED port 304.
[0043] Fig 4 illustrates perspective sectional view of plurality of wire
joystick controller cholangioscope device. As can be seen in fig 4(a), the
device comprises an instrument channel 110, a suction connector 402, an
14
irrigation connector 404, a joystick assembly having an articulation lever
cap 406. The device comprises of a plurality of guide pins 408 that are
configured to guide the steering wires for articulation when the control
lever is moved by the physician.
5 [0044] The device may have 4 steering wires 214 that are arranged in a
square configuration inside the catheter 104. The steering wires 214 are
connected to the control lever 112 at one end and to the bending section 108
at the other end. The control lever 112 can move in eight directions: up,
down, left, right, and plurality of diagonal directions. The movement of the
10 control lever 112 causes differential pull on the steering wires 214 and
results in corresponding bending of the bending section 108. For example,
when the control lever 112 is moved up, the upper steering wires 214 a and
214 d are pulled more than the lower steering wires 214 b and 214 c, causing
the bending section 108 to bend upward. Similarly, when the control lever
15 112 is moved down, the lower steering wires 214 b and 214 c are pulled
more than the upper steering wires 214 a and 214 d, causing the bending
section 108 to bend downward. When the control lever 112 is moved left,
the left steering wires 214 b and 214 d are pulled more than the right steering
wires 214 a and 214 c, causing the bending section 108 to bend left. When
20 the control lever 112 is moved right, the right steering wires 214 a and 214 c
are pulled more than the left steering wires 214 b and 214 d, causing the
bending section 108 to bend right. When the control lever 112 is moved upleft, the upper left steering wire 214 d is pulled more than the other steering
wires, causing the bending section 108 to bend up-left. Similarly, when the
25 control lever 112 is moved up-right, the upper right steering wire 214 a is
pulled more than the other steering wires, causing the bending section 108
to bend up-right. When the control lever 112 is moved down-left, the lower
left steering wire 214 b is pulled more than the other steering wires, causing
the bending section 108 to bend down-left. When the control lever 112 is

moved down-right, the lower right steering wire 214 c is pulled more than
the other steering wires, causing the bending section 108 to bend downright. The control lever 112 can also move in circular or elliptical motions,
causing corresponding circular or elliptical bending of the bending section
5 108. The amount of pull on each steering wire 214 can be adjusted by
varying the angle and distance of movement of the control lever 112.
[0045] Fig 5(a) and 5(b) illustrated sectional view of 4 wire endoscope
device in the lock and unlock position. The control lever 112 can also be
locked in a desired position to maintain a desired bending angle of the
10 bending section 108.
[0046] Fig. 1-5 are merely examples. A person skilled in the art will
recognize many variations, alternatives, and modifications of the
embodiment of the present disclosure. The joystick assembly is not limited
to cholangioscope but may be used for more endoscopic devices like
15 ureteroscope, arthroscope or the like.
[0047] The present invention has both technical as well as economic
significance with respect to the conventional endoscope devices.
[0048] While a particular embodiment of the invention has been illustrated
and described, modifications thereof will readily occur to those skilled in
20 the art. It is understood that the various embodiment, details and
constructions of the endoscope and their features described above and
illustrated in the attached figures may be interchanged among the various
embodiment while remaining within the scope of the invention.
Additionally, it is understood that various modifications could be made to
25 any of the endoscope and/or elements described herein above while
remaining within the scope of the invention.
[0049] Exemplary embodiments discussed above may provide certain
advantages. Though not required to practice aspects of the disclosure, these
following advantages may include:
16
[0050] Some embodiments of the endoscope provide better use of catheter
cross section for other functional lumens.
[0051] Some embodiments of the endoscope provide a minimum number
of steering wires.
5 [0052] Although the description provides implementations of the
endoscope, it is to be understood that the above descriptions are not
necessarily limited to the specific features or methods of systems. Rather,
the specific features and methods are disclosed as examples of
implementations for the endoscope.

We claim:

1. An endoscope (100) wherein the endoscope comprises:
a handle (102), wherein the handle (102) is a hollow structure,
wherein the handle (102) comprises a plurality of outlets disposed
on a later surface (116);
a control mechanism mounted on one end of the handle (102),
wherein the control mechanism is configured to articulate a
bending section, wherein the control mechanism comprises:
a catheter (104), wherein a first end of the catheter (104) is
coupled to the handle (102), and a second end of the catheter
(104) comprises a distal end (106) and the bending section,
wherein the control mechanism is connected to the distal end
(106) via a plurality of steering wires (214);
a fluid mechanism disposed inside the handle (102) and the
catheter (104), wherein the fluid mechanisms comprises a
plurality of conduits coupled between the distal end and the
plurality of outlets, wherein the plurality of conduits comprise
a suction conduit (402), and an irrigation conduit (404).

2. The endoscope (100) as claimed in claim 1, wherein the control
mechanism further comprises:
a base plate (208), wherein the base plate (208) is secured in the
handle (102), wherein the base plate (208) comprises the plurality of
conduits (212) provided on a periphery of the base plate (208);

a top plate (210), wherein the top plate (210) is coupled to the
base plate (208) via a universal joint (204), wherein the top plate (210)
is configured to rotate freely around the universal joint (204),
wherein the top plate comprises a plurality of steering wires (214);
and a control lever (114), wherein the control lever (114) is configured
to lock the position of a bending section via the top plate (210) using
a friction locking.

3. The endoscope (100) as claimed in claim 1, wherein the top plate
(210) comprises:
a spider, wherein the spider comprises a plurality of steering
wires (214), wherein the plurality of steering wires (214) are passed
through the plurality of conduits (212); and
a cup (202), disposed on the spider, wherein the cup (202) is a
hollow hemispherical structure.

4. The endoscope (100) as claimed in claim 2, wherein the base plate
(208) is configured to act like anchor points for the plurality of
steering wires (214) and provide a centre for rotation of the control
lever (112).

5. The endoscope (100) as claimed in claim 1, wherein the catheter (104)
is a hollow tubelike structure, wherein the catheter (104) comprises
a rigid structure and a flexible structure, wherein the flexible
structure is configured to articulate.

6. The endoscope (100) as claimed in claim 1, comprises a plurality of
guide pins (408), wherein the plurality of guide pins (408) are
coupled inside the handle (102), wherein the plurality of guide pins
(408) are configured to guide the plurality of steering wires (214) for
articulation when the control lever (112) is moved by the physician.

7. The endoscope (100) as claimed in claim 3, wherein the spider
comprises a screw (206) at a first end, wherein the control lever (112)
is coupled with the top plate (210) using the screw (206).

8. The endoscope (100) as claimed in claim 1, wherein the handle (102)
further comprises an instrument channel (110).

9. The endoscope (100) as claimed in claim 1, wherein the distal end
(106) comprises a camera (304), a LED port (306), and a channel port
(302), wherein the channel port (302) is connected to the suction
conduit (402), and the irrigation conduit (404).

10. An endoscope (100) comprises a fluid mechanism disposed inside a
handle (102) and a catheter (104), wherein the fluid mechanisms
comprises a plurality of conduits coupled between a distal end, a
plurality of out lets and a channel port (302), wherein the plurality of
conduits comprise a suction conduit (402), and an irrigation conduit
(404), wherein the channel port (302) is connected to the suction
conduit (402) and the irrigation conduit (404).

Dated: August 7th, 2024