FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003
COMPLETE SPECIFICATION
(See Section 10 and Rule 13)
A WIRE ASSEMBLY FOR BENDING SECTION OF AN ENDOSCOPIC DEVICE
Applicant:
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.
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TECHNICAL FIELD
[001] The present invention relates generally to the field of medical
devices. More specifically, the present invention relates to an endoscopic
device particularly a design and assembly of bending portion provided in
5 an insertion portion of an endoscope and configured to be operated to be
bent in a plurality of directions.
BACKGROUND
[002] In recent years, endoscopes and similar specialized instruments such as bronchoscopes, arthroscopes, colonoscopes, laparoscopes, gastroscopes
10 and duodenoscopes are well known from the state of the art and are used
in the medical field for visual examination and diagnosis of hollow organs and body cavities, as well as to assist in surgery, e.g. for a targeted tissue sampling. A conventional endoscope is generally an instrument with a distal end comprising an optical or electronic imaging system and a
15 bending portion, a proximal end with controls for manipulating the tool
and devices for viewing the image, and a solid or tubular elongate shaft connecting the ends. Both reusable and disposable endoscopes are known from the state of the art. [003] To use an endoscope, a physician inserts the distal end into a patient
20 through a natural orifice or an artificial incision and then pushes the shaft
into the patient until the distal end reaches a site of interest. The proximal end remains outside the patient and typically connects to an eyepiece, video monitor, or other equipment. A bending portion is provided on the distal end side of the insertion portion so that the insertion into the deep part of
25 the body can be easily performed.
[004] In the bending portion, a basic structure of links or segments arranged one behind the other and connected to one another by joints or
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other means, which are actuated by cable or string. Known endoscopes
typically include control wire(s) that are pulled and released to bend a
flexing (flexible) portion of the endoscope, to tilt the distal tip assembly. The
rotational force applied by a user to the grip wheel(s) provided on the
5 endoscope handle is basically converted into a tensile force acting on the
control wire in the axial direction of the control wire. The connection of the control wire to the grip wheel is essential for the transmission of the rotational force from the grip wheel to the control wire. However, sometimes there is not satisfactory reliability and durability with regard to
10 the connection between the steering pulling elements/steering wires and
the deflecting element/the tip. Known approaches to minimizing the aforementioned disadvantages are very heavy, quite complex and expensive. For example, Steel wire passes through the holes/plurality of passageways in bending section at one side and then after wrapping around
15 bending section’s peripheral it goes into another hole/passage at other side.
This makes the insertion tube diameter oversized. If the maintained tension of the steering wire is too high, the steerable tip part may be non-straight, or mechanical parts of the endoscope may break. On the other hand, if the tension of the steering wire is too low, the steering wire will have too much
20 play and be partly or wholly unresponsive to the control of the
operator/physician.
[005] To overcome the above problems, there is a need for a bending portion to prevent being oversized and which is easy to assemble and provides enough strength when tensile force and pressure is increased. This
25 invention is therefore directed towards providing an improved bending
portion and its assembly, which is relatively simple in design and structure, and is highly effective for its intended purpose.
OBJECTIVES
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[006] An object of the present invention is to provide an improved and a simple assembly of bending section design of an insertion portion of an endoscope.
[007] Another object of the present invention is to provide an improved
5 endoscope having an improved method for fixation of a wire portion in
bending section which is structurally simple and easy to manufacture.
SUMMARY
[008] Embodiments of the present disclosure present technological
10 improvements as solutions to one or more of the above-mentioned technical
problems.
[009] Before the present subject matter relating to a wire assembly for
bending section of an endoscopic device, it is to be understood that this
application is not limited to the particular system described, as there can be
15 multiple possible embodiments which are not 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.
20 [0010] This summary is provided to introduce aspects related to the wire
assembly for bending section of an endoscopic device. 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.
25 [0011] In an embodiment of a present invention, a wire assembly for
bending section of an endoscopic device is disclosed. The wire assembly for bending section of an endoscopic device comprises a pair of wires. Each of
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the wires is passed through a plurality of slits in an alternate fashion,
thereby affixing each of the wire on the inner side of the bending section of
the endoscopic device in a space apart manner. Each of the wires comprises
a first end and a second end. The first end of each of the wires is crimped
5 with a tube. The wire assembly comprises a pair of pullies. Each of the
pulley is coupled to the second end of each of the wire respectively. Each of the pulley is adapted to tighten the second end of each of the wires. During an operation, one of clockwise and anticlockwise rotation of the pulley enables articulation of the bending section.
10 [0012] This summary is provided to introduce aspects related to a wire
assembly for bending section assembly of the endoscopic device. 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.
15 [0013] Additional aspects, advantages, features and objects of the present
disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiment.
[0014] It will be appreciated that features of the present disclosure are
susceptible to being combined in various combinations without departing
20 from the scope of the present disclosure as defined by the below mentioned
detailed description and drawings.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0015] The foregoing detailed description of embodiments is better
understood when read in conjunction with the appended drawings. For the
25 purpose of illustrating the disclosure, there is shown in the present
document example constructions of the disclosure; however, the disclosure
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is not limited to the specific system or method disclosed in the document and the drawings.
[0016] The present disclosure is described in detail with reference to the
accompanying figures. In the figures, the left-most digit(s) of a reference
5 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.
[0017] Figure 1A and 1B illustrates a perspective view of a bending section
of a ureteroscope device, in accordance with an embodiment of the present
10 subject matter.
[0018] Figure 2 illustrates perspective view showing a bending tube and a steel tube in crimped state, in accordance with an embodiment of the present subject matter.
[0019] Figure 3A, 3B and 3C illustrates perspective view and top view of
15 bending section of an ureteroscope device respectively in assembled state,
in accordance with an embodiment of the present subject matter.
[0020] 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
20 associated arrow, the non-underlined number is used to identify a general
item at which the arrow is pointing.
[0021] Further, the figures depict various embodiments of the present
subject matter for purposes of illustration only. One skilled in the art will
readily recognize from the following discussion that alternative
25 embodiments of the structures and methods illustrated herein may be
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employed without departing from the principles of the present subject matter described herein.
DETAILED DESCRIPTION
[0022] Some embodiments of this disclosure, illustrating all its features, will
5 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, or meant to be limited to only the listed item or items. It must also be noted
10 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 a wiring assembly for bending section of an endoscopic device, similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the
15 exemplary, a wiring assembly for bending section of an endoscopic device
is now described.
[0023] 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
20 when said invention is positioned in or viewed from a given orientation. It
is to be understood that, by altering the orientation of the invention, certain relational terms may need to be adjusted accordingly.
[0024] The person skilled in the art will recognize many variations,
alternatives, and modifications of the embodiment of the present disclosure.
25 It should be understood that this invention is not limited to the particular
methodology, protocols, and the like, described herein and as such may
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vary. The terminology used herein is for the purpose of describing particular embodiment only and is not intended to limit the scope of the present invention, which is defined solely by the claims.
[0025] Various modifications to the embodiment will be readily apparent to
5 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 a wire assembly for bending section of an
endoscopic device, one of ordinary skill in the art will readily recognize that
a system can be utilized to provide an improved and a simple assembly of
10 a bending section design of an insertion portion of an endoscope. 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.
[0026] In an aspect of the present disclosure, an improved single hand
15 operated ureteroscope is disclosed which comprises of an improved
bending section that is easy to assemble and does not break when tensile force and pressure increases.
[0027] In an embodiment, of a present invention, a wire assembly for bending section of an endoscopic device is disclosed. The wire assembly for
20 bending section of an endoscopic device comprises a pair of wires. Each of
the wires is passed through a plurality of slits in an alternate fashion, thereby affixing each of the wire on the inner side of the bending section of the endoscopic device in a space apart manner. The pair of wires is affixed to the inner side of the bending section by welding. Joining bending section
25 and Wires from inside make joint more reliable and stop Ureteroscope
diameter from being oversized.
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[0028] The pair of wires are made up of steel. Each of the wires comprises a
first end and a second end. The first end of each of the wires is crimped with
a tube. The tube is made up of stainless steel. Stainless Steel tube provides
the enough material to steel wire to get welded with the bending section.
5 [0029] The wire assembly comprises a pair of pullies. Each of the pulley is
coupled to the second end of each of the wire respectively. Each of the pulley is adapted to tighten the second end of each of the wires and for providing a rotary motion to the bending section. The pair of pullies is operated with a knob to provide a rotary motion to the bending section.
10 During an operation, one of clockwise and anticlockwise rotation of the
pulley enables articulation of the bending section.
[0030] It is observed that the ureteroscope device has provided the much needed advantage in surgery which avoids any discomfort to the patient as it was the case in conventional methods. Along with these advantages, the
15 bending section of ureteroscope can be easily assembled and disassembled
providing much needed strength and articulation to the bending section. [0031] The present invention has both technical as well as economic significance with respect to the conventional designs of bending sections. [0032] While a particular embodiment of the invention has been illustrated
20 and described, modifications thereof will readily occur to those skilled in
the art. It is understood that the various embodiment, details and constructions of the ureteroscope device 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.
25 Additionally, it is understood that various modifications could be made to
any of the ureteroscope device and/or elements described herein above while remaining within the scope of the invention.
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[0033] 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.
5 [0034] Referring now to the drawings, particularly by their reference
numbers, Figure 1A illustrates a perspective view 100 of a bending section
102 of an ureteroscope without the pull cables/strings/wires. In
conventional methods, steel wire is wrapped around the bending section to
get attached to the both sides of bending section. The bending section
10 comprises a plurality of rings and plurality of slits on top and bottom
portion of the rings of the bending section assembly. Figure 1B illustrates the top view 104 of the bending section assembly 102.
[0035] Figure 2 illustrates perspective view showing a bending tube and a steel tube in a crimped state. The wire assembly for bending section 102 of
15 an endoscopic device comprises a pair of wires 204a and 204b. Each of the
wires 204 is passed through a plurality of slits 206a, 206b,….206n in an alternate fashion, thereby affixing each of the wire 204 on the inner side of the bending section 102 of the endoscopic device in a space apart manner. The pair of wires 204 is affixed to the inner side of the bending section by
20 welding. Joining Bending Section and Wires from inside make joint more
reliable and stop Ureteroscope diameter from being oversized.
[0036] The pair of wires 204 are made up of steel. Each of the wires 204 comprises a first end 208 and a second end. The first end 208 of each of the wires is crimped with a tube 202. The tube 202 is made up of stainless steel.
25 Stainless Steel tube provides the enough material to Steel wire to get welded
with the bending section.
[0037] Figure 3A, 3B and 3C illustrates perspective view and top view of bending section of an ureteroscope device respectively in assembled state.
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Figure 3A provides perspective view of a bending section 102 of an
ureteroscope with a pair of wires 204. Each of the wires 204 is passed
through a plurality of slits 206a, 206b,…206n in an alternate fashion, and
affix each of the wire 204 on the inner side of the bending section 102 of the
5 endoscopic device in a space apart manner. On two opposite sides of the
bending section, the pair of wires are affixed from inside. The pair of wires 204 is affixed to the inner side of the bending section by welding.
[0038] Figure 3B represents the top view of the bending section 102. Each of
the wires from the pair of wires 204 comprises a first end 208 and a second
10 end. The first end 208 of each of the wires is crimped with a tube 202. The
tube 202 is made up of stainless steel. Stainless Steel tube provides the enough material to steel wire to get welded with the bending section.
[0039] Figure 3C represents, arrangement of wires through the plurality of
slits 206 of the bending section 102. Each of the wires 204 is passed through
15 a plurality of slits 206a, 206b,….206n in an alternate fashion, and affix each
of the wire 204 on the inner side of the bending section 102 of the endoscopic device in a space apart manner.
[0040] Exemplary embodiments discussed above may provide certain
advantages. Though not required to practice aspects of the disclosure, these
20 following advantages may include:
[0041] Some embodiments of the wire assembly provide joint of the bending section more reliable and stop Ureteroscope diameter from being oversized.
[0042] Some embodiments of wire assembly provide an improved and a
25 simple assembly of bending section design of an insertion portion of an
endoscope.
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[0043] Although the description provides implementations of a wire
assembly for bending section of an endoscopic device, 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
5 are disclosed as examples of implementations for the wire assembly for
bending section of an endoscopic device.
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15
20
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We claim:
1. A wire assembly for bending section (102) of an endoscopic
device comprises:
a pair of wires (204), wherein each of the wires (204) is
5 passed through a plurality of slits (206) in an alternate fashion,
thereby affixing each of the wire on the inner side of the bending
section (102) of the endoscopic device in a space apart manner,
wherein each of the wires (204) comprises a first end (208) and a
second end, wherein the first end (208) of each of the wires is
10 crimped with a tube (202);
a pair of pullies, wherein each of the pulley is coupled to the second end of each of the wire respectively and wherein each of the pulley is adapted to tighten the second end of each of the wires;
15 wherein during an operation, one of clockwise and
anticlockwise rotation of the pulley enables articulation of the bending section (102).
2. The wire assembly for bending section (102) of the endoscopic device
as claimed in claim 1, wherein the pair of pullies is adapted for providing a
20 rotary motion to the bending section (102).
3. The wire assembly for bending section (102) of the endoscopic device
as claimed in claim 2, wherein the pair of pullies is operated with a knob to
provide a rotary motion to the bending section (102).

4. The wire assembly for bending section (102) of the endoscopic device
as claimed in claim 1, wherein the pair of wires (204) is affixed to the inner
side of the bending section by welding.
5. The wire assembly for bending section (102) of the endoscopic device
5 as claimed in claim 1, wherein the pair of wires (204) are made up of steel.
6. The wire assembly for bending section (102) of the endoscopic device
as claimed in claim 1, wherein the tube is made up of stainless steel.