CN112704465A - Rotatable endoscope outer channel - Google Patents

Abstract

The invention relates to the field of medical instruments, in particular to a rotatable endoscopic outer channel. The endoscope outer channel comprises a mounting cap, a rotating cap, a pull wire and a pull wire control device, wherein the mounting cap is mounted at the endoscope front end part, and the rotating cap is rotatably arranged on the mounting cap; the installation cap and the rotary cap are respectively provided with a wire connecting piece and a wire fixing piece, the stay wires are double stay wires, the first ends of the first stay wires and the second stay wires are respectively arranged around the outer wall of the installation cap in different directions after passing through the wire connecting piece and are fixed to the wire fixing piece, and the second ends of the two stay wires are connected to the stay wire control device. According to the rotatable endoscope outer channel, the pull wire is controlled by the pull wire control device to drive the rotating cap and the mounting cap to rotate relatively, so that the rotatable outer channel is formed.

Description

Rotatable endoscope outer channel

Technical Field

The invention relates to the field of medical instruments, in particular to a rotatable endoscopic outer channel.

Background

Digestive tract tumors are common clinical diseases, and the problems of poor visual field, too deep tumor position, dead angle in operation and the like are often encountered when the digestive tract tumors are cut under the endoscope visual field. Therefore, the tissue around the lesion needs to be pulled to expose the lesion, and clinically common methods include a metal wire-clamping combined traction technique, a metal clip elastic ring combined traction technique, a grasper traction technique, and the like.

The method can only realize traction at one angle, cannot be adjusted according to the actual condition of the operation, cannot change the traction direction and angle at any time, has limitations in the operation process, and cannot completely meet the requirements of clinicians.

If a device capable of flexibly controlling the orientation of a surgical instrument is provided for a doctor, a movable instrument channel is added under an endoscope, a single-channel endoscope can be changed into a double-channel endoscope, and the orientation of an outer channel can be adjusted according to needs; therefore, a doctor does not need to twist the body to adjust the angle of the endoscope body of the endoscope, help can be brought to tumor peeling, surgical wound suturing and the like, and the operation difficulty of the doctor is reduced.

The invention aims to provide a rotatable endoscopic outer channel, belongs to the field of medical instruments and solves the problem that an endoscopic instrument channel cannot rotate. The rotatable endoscopic outer channel provided by the invention provides an access instrument capable of adjusting the position of an endoscopic surgical instrument, and can reduce the difficulty of surgery, shorten the surgery time and reduce the surgery complications.

Disclosure of Invention

In view of the foregoing, the present invention provides a rotatable endoscopic external channel to solve the deficiencies of the prior art.

The invention is mainly realized by the following technical scheme:

the utility model provides a rotatable scope outer passageway, includes installation cap, rotatory cap, acts as go-between and the controlling means that acts as go-between, the installation cap is installed at the tip of scope, is provided with wired connecting piece on the installation cap, and rotatory cap rotatably sets up on the installation cap, is equipped with the line mounting on the rotatory cap.

The pull wire is a double pull wire and comprises a first pull wire and a second pull wire, the first end of the first pull wire passes through the wire connecting piece and then extends around the mounting cap in a certain direction and then is connected to the wire fixing piece, and the first end of the second pull wire passes through the wire connecting piece and then is arranged around the mounting cap in the other direction opposite to the direction and then is connected to the wire fixing piece; so that the first stay wire and the second stay wire are respectively fixed to the wire fixing piece after being arranged around the mounting cap in opposite directions. The length of the first stay wire and the second stay wire which are arranged around the mounting cap is unlimited, and the number of the stay wires can be less than one circle or more than one circle.

The second ends of the first pull wire and the second pull wire are connected to the pull wire control device, so that the pull wire is controlled by the pull wire control device to drive the rotating cap and the mounting cap to rotate relatively to form a rotatable outer channel. Namely, the stay wire control device can drive the stay wire to move so as to change the position of the stay wire, thereby adjusting the relative position of the rotating cap and the mounting cap.

Wherein said swivel cap forms part of the outer channel, the swivel cap providing the possibility of swiveling the outer channel in relation to the inner channel (i.e. the endoscope and the mounting cap mounted on the endoscope tip) for timely adjustment of its orientation. Of course, the outer channel may also include an additional communicating tube for other instruments to be set, or when other instruments need to be used in combination with the endoscope, the front end of the related instrument may be fixed with the rotating cap, so that the pull wire is driven by the pull wire control device to drive the related instrument to rotate around the tip of the endoscope.

The pull wires are double pull wires, one pull wire is pulled to enable the rotating cap to rotate clockwise, and the other pull wire is pulled to enable the rotating cap to rotate anticlockwise. The pull wire is preferably led out through an endoscopic instrument channel and is arranged in the pull wire control device after being led out; alternatively, it is also possible to provide additional channels along the endoscope for the placement of the pull wires.

According to the rotatable endoscope outer channel, the stay wire control device comprises a regulating wheel which is rotatably arranged, a stay wire connecting piece is arranged on the regulating wheel, and the stay wire connecting piece is used for matching a stay wire led out from the endoscope instrument channel. The second ends of the first pull wire and the second pull wire are respectively arranged around the pull wire connecting piece along different directions, and then the second end points of the first pull wire and the second pull wire are respectively fixed on the pull wire connecting piece or the end points of the two pull wires are connected together.

According to any one of the above rotatable endoscopic external channels, a wire groove is formed between the rotating cap and the mounting cap, and two pull wires are arranged in the wire groove. The wire casing sets up the clearance that sets up between the two through the difference of external diameter in both when rotatory cap is established with the installation cap cover with regard to as the wire casing, also includes the wire casing that the length of rotatory cap and installation cap is different in the outer wall formation of installation cap.

According to any one of the above-mentioned rotatable endoscope external channel, the pull wire control device can drive the pull wire to move so as to adjust the relative position of the rotating cap and the mounting cap, and can lock the position of the pull wire and the orientation of the rotating cap. To this end, the wire control device further comprises an adjustment wheel locking member to lock rotation of the adjustment wheel.

The rotatable endoscope outer channel according to any one of the above items, the pull wire control device further comprises a fixed seat, and the adjusting wheel is rotatably arranged on the fixed seat; the adjusting wheel locking piece is a locking handle which is hinged on the fixed seat, and a cam part is further arranged on the locking handle. When the locking handle is rotated, the cam part is contacted with the adjusting wheel, and the adjusting wheel is extruded to be incapable of rotating, so that the positions of the adjusting wheel and the pull wire are locked; when the locking handle is rotated reversely, the cam part is separated from the adjusting wheel, and the adjusting wheel can rotate bidirectionally, thereby driving the two pull wires to adjust the positions of the rotating cap and the communicating pipe.

The rotatable endoscope outer channel according to any one of the above items, the pull wire control device further comprises a fixed seat, and the adjusting wheel is rotatably arranged on the fixed seat; the fixed seat is provided with a limiting tooth groove, and the adjusting wheel is provided with limiting teeth. When the limiting teeth are meshed with the limiting tooth grooves, the adjusting wheel cannot rotate, so that the positions of the adjusting wheel and the two pull wires are locked; when the limiting teeth are separated from the limiting tooth grooves, the adjusting wheel can rotate in two directions, so that the two pull wires are driven to adjust the positions of the rotating cap and the communicating pipe.

The rotatable endoscope outer channel according to any one of the above items, the pull wire control device further comprises a pull wire tightening wheel, an inner cavity is arranged in the adjusting wheel, and the pull wire tightening wheel is rotatably sleeved in the inner cavity; the pull-wire connecting piece is provided with a through hole, the second ends of the first pull wire and the second pull wire pass through the through hole and enter the inner cavity of the adjusting wheel after being wound around the pull-wire connecting piece, and the second ends of the two pull wires are directly fixed on the pull-wire tightening wheel or fixed on the pull-wire tightening wheel after being wound around the pull-wire tightening wheel along the same direction.

The rotatable endoscopic external channel according to any one of the above claims, wherein the pull-wire control device further comprises a pull-wire tightening locking assembly to control the rotation of the pull-wire tightening wheel relative to the adjustment wheel. The wire tightening locking assembly can have the structure of the adjusting wheel locking piece as described above, so that the wire tightening wheel is locked bidirectionally, and when the tightening degree of the two wires needs to be adjusted, the wire tightening locking assembly is unlocked and adjusted correspondingly, and is locked again after the adjustment is completed. Or, the stay wire tightening and locking assembly also has a one-way locking function, namely when the stay wire needs to be tightened in one way, the stay wire tightening and locking assembly can be directly operated to adjust the tightening degree of the two stay wires so as to tighten the two stay wires, and when the stay wire needs to be loosened, the stay wire tightening and locking assembly needs to be operated to unlock the stay wire so as to loosen the two stay wires.

The rotatable endoscope outer channel is a one-way locking stay wire tightening wheel, the stay wire tightening and locking assembly comprises a ring, the stay wire tightening wheel and the ring are installed inside the adjusting wheel, and teeth are arranged on the stay wire tightening wheel and correspond to tooth grooves in the ring to form a corresponding tooth groove structure. When the stay wire tightening wheel and the ring are in a joint state, the stay wire tightening wheel can only rotate in one direction, and only two stay wires can be tightened; when the pull-string tightening wheel and the ring are in a separated state, the pull-string tightening wheel can rotate in two directions to tighten or loosen the two pull strings.

The rotatable endoscope outer channel is a one-way locking pull-wire tightening wheel, the pull-wire tightening and locking assembly comprises a ring and a one-way bearing, and the pull-wire tightening wheel, the ring and the one-way bearing are arranged in an adjusting wheel; the one-way bearing is fixed in the adjusting wheel and is arranged between the adjusting wheel and the stay wire tightening wheel. When the stay wire tightening wheel and the one-way bearing are in a fit state, the stay wire tightening wheel can only rotate in one direction, and only two stay wires can be tightened; when the pull-cord tightening wheel and the one-way bearing are in a separated state, the pull-cord tightening wheel can rotate in two directions to tighten or loosen the two pull cords.

The rotatable endoscope outer channel according to any one of the above items, the wire connecting piece is a threading hole arranged on the mounting cap, the wire fixing piece is a wire fixing hole arranged on the rotating cap, and the two wire fixing holes are used for fixing the first ends of the first pull wire and the second pull wire respectively.

The rotatable endoscope outer channel comprises a communicating pipe, wherein one end of the communicating pipe is connected with the rotating cap, and the other end of the communicating pipe is connected with the pull wire control device; both ends of the communication pipe are preferably detachably connected.

Compared with the prior art, the invention has the following beneficial effects;

(1) a movable endoscope outer channel is added. The invention adds an instrument channel for the endoscope, so that two instruments can work cooperatively under the endoscope, the operation difficulty can be reduced, and the operation time can be shortened;

(2) the position of the outer channel can be adjusted and locked at any time. The rotatable endoscope outer channel of the invention adjusts and locks the relative position of the mounting cap and the rotating cap by controlling the pull wire, so that the position of the instrument channel in the operation can be changed at will.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

Fig. 1a and 1b are schematic structural views of a rotatable endoscopic external channel according to an embodiment (embodiment one) of the present invention; wherein, themounting cap 1 and therotating cap 2 are matched with the front end part of the endoscope, the pull wire control device is fixed on the operation part of the endoscope, one end of the connectingpipe 11 is matched with therotating cap 2, the other end is matched with the pull wire control device, and the middle part is arranged along the endoscope;

FIGS. 2a-2c are schematic views illustrating the rotation of the rotatable endoscopic outer channel according to the embodiment of FIG. 1 a; wherein, fig. 2a is a schematic view when not rotating, fig. 2b is a schematic view when pulling thesecond wire 3b to rotate therotary cap 2 clockwise, and fig. 2c is a schematic view when pulling thefirst wire 3a to rotate therotary cap 2 counterclockwise;

FIG. 3 is a schematic structural view of the wire control device of the embodiment of FIG. 1 b;

FIG. 4 is a schematic view of the fitting structure of theinstallation cap 1, therotation cap 2 and the twopull wires 3a and 3b in the embodiment of FIG. 1 a;

fig. 5 is a schematic view of a fitting structure of themounting cap 1, the rotatingcap 2 and the twopull wires 3a and 3b according to another embodiment (embodiment two) of the present invention;

FIG. 6 is a schematic structural view of the wire control device of the embodiment of FIG. 5;

fig. 7 is a schematic structural view of a wire control device according to another embodiment (third embodiment) of the present invention.

Reference numerals:

1. the installation cap, 1a, the through wires hole, 2, rotatory cap, 2a, the line fixed orifices, 12, the wire casing, 3, act as go-between, 3a, first act as go-between, 3b, the second acts as go-between, 4, the fixing base, 4a, spacing tooth's socket, 5, the regulating wheel, 51, the connecting piece acts as go-between, 5b, spacing tooth, 6, the locking handle, 6a, cam portion, 7, the wheel of straining a thread, 7a, the tooth, 8, the ring, 8a, the tooth's socket, 9, one-way bearing, 10, bandage, 11 communicating pipe.

Detailed Description

In order that those skilled in the art will better understand the invention and thus more clearly define the scope of the invention as claimed, it is described in detail below with respect to certain specific embodiments thereof. It should be noted that the following is only a few embodiments of the present invention, and the specific direct description of the related structures is only for the convenience of understanding the present invention, and the specific features do not of course directly limit the scope of the present invention. Such alterations and modifications as are made obvious by those skilled in the art and guided by the teachings herein are intended to be within the scope of the invention as claimed.

A rotatable endoscope outer channel is fitted over a tip portion of an endoscope to form an outer channel that is rotatable relative to the tip portion of the endoscope to adjust the relative position. The outer channel can be matched with equipment such as a retractor and the like, so that the relative position of the equipment arranged in the outer channel can be adjusted according to requirements when the endoscope is used for observation or operation.

This outer passageway of scope mainly comprisesinstallation cap 1,rotatory cap 2, 3 and the controlling means that acts as go-between of acting as go-between,installation cap 1 is installed at the first end portion of scope, is provided with wired connecting piece oninstallation cap 1, androtatory cap 2 rotatably sets up oninstallation cap 1, androtatory cap 2 can overlap and locate 1 outside of installation cap or inside and rotatably cooperate in order to realize both, and 1 outside of installation cap is located to preferredrotatory cap 2 cover, is equipped with the line mounting on therotatory cap 2. The wire connecting piece and the wire fixing piece can be holes penetrating through the mountingcap 1 or therotating cap 2, and can also be wire lugs arranged on the mountingcap 1 or therotating cap 2, and the purpose of the wire connecting piece and the wire fixing piece is to allow thepull wire 3 to pass through or be fixed, and to convert the stress of thepull wire 3 into the acting force of therotating cap 2 rotating relative to the mountingcap 1 when thepull wire 3 is stressed to extend or shorten.

Thepull wire 3 is preferably a double pull wire, and thepull wire 3 is preferably led out through an instrument channel of an endoscope and is arranged in the pull wire control device after being led out; pulling one of the pull wires can enable therotating cap 2 to rotate clockwise, and pulling the other pull wire enables therotating cap 2 to rotate anticlockwise. Thepull wire 3 comprises afirst pull wire 3a and asecond pull wire 3b, and the first end of thefirst pull wire 3a passes through the wire connecting piece and then winds in a certain direction, for example, clockwise, extends along the outer wall of the mountingcap 1 and is connected to the wire fixing piece; the first end of thesecond wire 3b passes through the wire connection member and then extends around in another direction (opposite to the first wire), for example, in a counterclockwise direction, along the outer wall of the mounting cap and is connected to the wire fixing member. That is, the twowires 3a, 3b are arranged around the outer wall of the mountingcap 1 in different directions, and when therotating cap 2 is rotated clockwise with respect to the mountingcap 1, one wire is extended and the other wire is shortened; when therotating cap 2 rotates counterclockwise relative to the mountingcap 1, the pull wire which is stretched before is shortened, and the other shortened pull wire is stretched; thereby, the rotation of therotary cap 2 can be controlled by controlling the extension or contraction of the twowires 3a, 3 b. The number of turns of the first pull wire and the second pull wire wound around the mountingcap 1 can be set according to needs, and the number of turns can be 1/4, 1/3 and the like, and can be less than one turn or more than one turn.

The second ends of the first pullingwire 3a and the second pullingwire 3b are both connected to a pulling wire control device, and the pulling wire control device works to increase and decrease the lengths of the first pullingwire 3a and the second pullingwire 3b correspondingly, so as to drive the pullingwire 3 to enable therotating cap 2 to rotate relative to the mountingcap 1. That is, the string control device can extend thefirst string 3a and shorten thesecond string 3b at the same time, and the extension amounts of the two strings are equal; or thefirst wire 3a is shortened and thesecond wire 3b is extended at the same time, and the extension and contraction amounts of the two wires are equal, so that the rotation of therotating cap 2 is controlled by the wire control device.

In some embodiments, awire slot 12 is further disposed between therotating cap 2 and the mountingcap 1, and the first ends of the first pullingwire 3a and the second pullingwire 3b are disposed in thewire slot 12. Thewire casing 12 can be formed by different inner and outer diameters of therotating cap 2 and the mountingcap 1 when therotating cap 2 and the mounting cap are sleeved, the length of therotating cap 2 and the length of the mountingcap 1 are different from those of the outer wall of the mountingcap 1, or when therotating cap 2 and the mountingcap 1 are sleeved and matched, theannular wire casing 12 is arranged on the front end face of therotating cap 2 or the mountingcap 1, and two pull wires are arranged in thewire casing 12 along different directions.

Wherein, the first end of the twopull wires 3a and 3b refers to the pull wire part of the pull wire arranged on therotating cap 2 or the mountingcap 1, and the second end refers to the pull wire part arranged in the pull wire control device; the lengths of the first end and the second end of the stay wire are not fixed, and the lengths of the two ends of the stay wire are correspondingly changed in the process that the stay wire control device drives the stay wire to move so as to drive therotating cap 2 to rotate.

In other embodiments, the pull wire control device comprises a rotatably arranged adjustingwheel 5, and theadjusting wheel 5 is provided with a pullwire connecting piece 51 for matching the twopull wires 3a and 3 b; the second ends of the first pullingwire 3a and the second pullingwire 3b are respectively arranged around the pullingwire connecting piece 51 along different directions, and the second ends of the first pullingwire 3a and the second pullingwire 3b are respectively fixed on the pullingwire connecting piece 51 or connected together.

In order to enable theadjusting wheel 5 to be rotatably arranged, the stay wire control device further comprises a fixedseat 4, wherein the fixedseat 4 is connected with the operating end of the endoscope and is fixed through abinding belt 10; theadjusting wheel 5 is rotatably arranged on the fixedseat 4.

In other embodiments, the wire control device further comprises an adjustment wheel locking member that locks the rotation of theadjustment wheel 5, such that the rotational position of theadjustment wheel 5 is locked, and thus the twowires 3a, 3b and therotating cap 2 are locked, thereby preventing uncontrolled rotation of theadjustment wheel 5, while allowing therotating cap 2 to be fixed in a corresponding orientation.

In some embodiments, for locking theadjusting wheel 5, the adjusting wheel locking member is alocking handle 6 hinged to the fixedseat 4, and the locking handle 6 is further provided with acam portion 6 a; when the locking handle 6 is rotated, thecam part 6a of the locking handle is contacted with theadjusting wheel 5, and theadjusting wheel 5 is squeezed to be incapable of rotating relative to the fixedseat 4, so that the positions of theadjusting wheel 5 and thepull wires 3a and 3b are locked; when the locking handle 6 is rotated in the reverse direction, thecam part 6a is separated from theadjusting wheel 5, and theadjusting wheel 5 can rotate in both directions, thereby driving the twopull wires 3a and 3b to adjust the orientation of therotating cap 2 and the communicatingpipe 11.

In other specific embodiments, in order to lock theadjusting wheel 5, a limitingtooth groove 4a is formed in the fixingseat 4, and a limitingtooth 5b is formed in theadjusting wheel 5; when the limitingteeth 5b are meshed with the limitingtooth grooves 4a, theadjusting wheel 5 cannot rotate, so that the positions of theadjusting wheel 5 and the twopull wires 3a and 3b are locked; when the limitingteeth 5b and the limitingtooth grooves 4a are separated, theadjusting wheel 5 can rotate in two directions, so that the twopull wires 3a and 3b are driven to adjust the positions of therotating cap 2 and the communicatingpipe 11.

Of course, other known prior art techniques for locking theadjustment wheel 5 are also possible.

In other embodiments, to adjust the tightening degree of the twowires 3a, 3b, the wire control device further comprises awire tightening wheel 7; an inner cavity is arranged in theadjusting wheel 5, and the staywire tightening wheel 7 is rotatably sleeved in the inner cavity; the staywire connecting piece 51 is provided with a throughhole 5 a. After the first pullingwire 3a and the second pullingwire 3b are led out through the endoscope instrument channel, the second ends of the two pullingwires 3a and 3b are arranged around the pullingwire connecting piece 51 along different directions (for example, one is arranged along the clockwise and outward directions and the other is arranged along the counterclockwise direction), pass through the throughhole 5a and enter the inner cavity of theadjusting wheel 5, the second ends of the two pullingwires 3a and 3b are directly fixed on the pullingwire tightening wheel 7, or are fixed on the pullingwire tightening wheel 7 after being wound around the pullingwire tightening wheel 7 along the same direction (namely, both are arranged along the clockwise direction or both are arranged along the counterclockwise direction), so that when the pullingwire tightening wheel 7 rotates, both the two pullingwires 3a and 3b are extended or shortened, and the synchronous adjustment of the two pullingwires 3a and 3b is realized. Wherein, whether the twopull wires 3a and 3b are fixed on the pullwire tightening wheel 7 and need to be wound on the pullwire tightening wheel 7 in the same way or not and the number of turns during winding are mainly determined by the lengths of the twopull wires 3a and 3 b; generally, when the lengths of the twowires 3a, 3b are long, corresponding twisting is required; meanwhile, the number of windings may be less than one such as 1/4 turns, 1/2 turns, etc. In principle, the twowires 3a, 3b should have a suitable length.

In the preferred embodiment, the wire control device further includes a wire takeup locking assembly to control rotation of thewire takeup wheel 7 relative to theadjustment wheel 5.

In certain embodiments, the pull control device further includes aloop 8 for one-way locking of the pull take-uppulley 7. The pull-wire tightening wheel 7 and thering 8 are arranged inside theadjusting wheel 5, andteeth 7a are arranged on the pull-wire tightening wheel 7 and correspond totooth grooves 8a on thering 8 to form a corresponding tooth groove structure. When the staywire tightening wheel 7 is attached to thering 8, the staywire tightening wheel 7 can only rotate in one direction, and only twostay wires 3a and 3b can be tightened; when thewire takeup wheel 7 and thering 8 are in a separated state, thewire takeup wheel 7 can rotate in both directions to pull or release the twowires 3a and 3 b.

In other embodiments, for the one-way lockingwire tensioning wheel 7, the wire control device further comprises aring 8 and a one-way bearing 9, and thewire tensioning wheel 7, thering 8 and the one-way bearing 9 are arranged inside theadjusting wheel 5; wherein, the one-way bearing 9 is fixed inside theadjusting wheel 5 and is arranged between the adjustingwheel 5 and the staywire tightening wheel 7. When the staywire tightening wheel 7 is attached to the one-way bearing 9, the staywire tightening wheel 7 can only rotate in one direction, and only twostay wires 3a and 3b can be tightened; when thewire tightening wheel 7 and the one-way bearing 9 are in a separated state, thewire tightening wheel 7 can rotate in two directions to tighten or loosen the twowires 3a and 3 b.

Of course, the wire takeup locking assembly described above may be of other known prior art that can achieve unidirectional locking of thewire takeup pulley 7. Alternatively, it is functionally possible to use a structure similar to the above-mentioned wire control device, which can perform a bidirectional locking function, and only the operation manner is different.

In some embodiments, the thread connecting member is a threading hole 1a formed in the mountingcap 1, the thread fixing member is athread fixing hole 2a formed in therotating cap 2, and two of thethread fixing holes 2a are respectively used for fixing first ends of the first and second pullingthreads 3a and 3 b.

In other embodiments, the endoscope outer channel further comprises a communicatingpipe 11, one end of the communicatingpipe 11 is connected with therotating cap 2, and the other end is connected with the pull wire control device; the communicatingpipe 11 is preferably located outside therotary cap 2 and detachably connected to therotary cap 2 and the wire control device.

The rotatable endoscope outer channel mainly comprises a mounting cap, a rotating cap, a pull wire and a pull wire control device, wherein the mounting cap is mounted at the endoscope front end part, and the rotating cap is rotatably arranged on the mounting cap; the installation cap and the rotary cap are respectively provided with a wire connecting piece and a wire fixing piece, the stay wires are double stay wires, the first ends of the first stay wires and the second stay wires are respectively arranged around the outer wall of the installation cap in different directions after passing through the wire connecting piece and are fixed to the wire fixing piece, and the second ends of the two stay wires are connected to the stay wire control device. According to the rotatable endoscope outer channel, the pull wire is controlled by the pull wire control device to drive the rotating cap and the mounting cap to rotate relatively, so that the rotatable outer channel is formed.

Example one

As shown in fig. 1a-4, a rotatable endoscope external channel comprises a mountingcap 1, arotating cap 2, apull wire 3, a pull wire control device and a communicatingtube 11.

The mountingcap 1 is sleeved on the tip of the endoscope, therotating cap 2 is rotatably sleeved outside the mountingcap 1, and the inner diameter of the mountingcap 1 is larger than the outer diameter of therotating cap 2 to form a gap serving as awire groove 12 between the inner diameter and the outer diameter, as shown in fig. 4. One end of the communicatingpipe 11 is positioned outside therotating cap 2 and connected with therotating cap 2, and the other end is connected with the pull wire control device, so that an outer channel extending from the pull wire control device to therotating cap 2 is provided; thecommunication pipe 11 is arranged along the endoscope, and the length thereof is slightly longer than the length of the endoscope.

Thestay wire 3 is a double stay wire and comprises afirst stay wire 3a and asecond stay wire 3 b; thefirst pull wire 3a passes through the threading hole 1a of the mountingcap 1 and then is connected with onewire fixing hole 2a of therotating cap 2, and thesecond pull wire 3b passes through the threading hole 1a of the mountingcap 1 and then is connected with the otherwire fixing hole 2a of therotating cap 2 after being wound for one circle through thewire grooves 12 in the mountingcap 1 and therotating cap 2, as shown in fig. 2 a. When in use, thesecond pull wire 3b is pulled, so that therotating cap 2 can rotate clockwise, as shown in fig. 2 b; when thefirst wire 3a is pulled, therotating cap 2 may be rotated counterclockwise as shown in fig. 2 c. So that the front end of saidcommunication tube 11 is rotated to different positions with respect to the endoscope tip without any action at the tip of the endoscope, as shown in fig. 2b, 2 c.

The pull wire control device is installed at an operation part of the endoscope, and can be fixed on the operation part of the endoscope through a bindingband 10. The stay wire control device comprises a fixedseat 4, a staywire tightening wheel 7, anadjusting wheel 5, alocking handle 6 and aring 8, wherein the fixedseat 4 is fixed on an endoscope operation part through a bindingband 10, and other components are directly or indirectly matched on the fixedseat 4, so that the stay wire control device is formed.

Theadjusting wheel 5 is rotatably arranged on the fixedseat 4, the staywire tightening wheel 7 is rotatably sleeved in theadjusting wheel 5, the first ends of thefirst stay wire 3a and thesecond stay wire 3b are connected with the mountingcap 1 and therotating cap 2 according to the mode, and thefirst stay wire 3a and thesecond stay wire 3b are led out to the stay wire control device through the endoscope instrument channel. Theadjusting wheel 5 is provided with a staywire connecting piece 51, and thefirst stay wire 3a and thesecond stay wire 3b are respectively arranged around the staywire connecting piece 51 along different directions after being led out through an endoscope instrument channel, then respectively pass through theholes 5a on theadjusting wheel 5, then are wound along the same direction and are fixed on the staywire tightening wheel 7; after being led out through the endoscopic instrument channel, thefirst pull wire 3a and thesecond pull wire 3b respectively wind the pullwire connecting piece 51 along the clockwise direction and the anticlockwise direction and then pass through thehole 5a on theadjusting wheel 5.

The pull-string tightening wheel 7 and thering 8 are installed inside theadjusting wheel 5, andteeth 7a are arranged on the pull-string tightening wheel 7 and correspond totooth grooves 8a on thering 8 to form a tooth groove structure. When the pull-upwheel 7 is attached to thering 8, the pull-upwheel 7 can only rotate in one direction and only can pull up the pull-upwires 3a and 3b, and when the pull-upwheel 7 is detached from thering 8, the pull-upwheel 7 can rotate in two directions to pull up or release the pull-upwires 3a and 3 b.

The locking handle 6 is hinged on the fixedseat 4, when the locking handle 6 is rotated, thecam part 6a of the locking handle is contacted with theadjusting wheel 5, and theadjusting wheel 5 is squeezed to be incapable of rotating, so that the positions of theadjusting wheel 5 and thepull wires 3a and 3b are locked; when the locking handle 6 is rotated reversely, thecam part 6a is separated from theadjusting wheel 5, and theadjusting wheel 5 can rotate bidirectionally to drive thepull wires 3a and 3b to adjust the positions of therotating cap 2 and the communicatingpipe 11.

Example two

As shown in fig. 5 and 6, a rotatable endoscopic external channel mainly comprises a mountingcap 1, arotating cap 2, apull wire 3, a pull wire control device and a communicatingtube 11. Therotating cap 2 is rotatably sleeved outside the mountingcap 1, the front end of the mountingcap 1 protrudes out of therotating cap 2, and awire groove 12 is formed in the outer wall of the mountingcap 1. The communicatingpipe 11 is located on the outer side of therotating cap 2, thepull wires 3 are double pull wires, wherein thefirst pull wire 3a penetrates through the threading hole 1a on the end surface of the mountingcap 1 and is directly connected with therotating cap 2, and thesecond pull wire 3b penetrates through the threading hole 1a on the end surface of the mountingcap 1 and then is connected with therotating cap 2 after being wound by a circle outside the mountingcap 1, as shown in fig. 5.

The stay wire control device is provided with afixed seat 4, a staywire tightening wheel 7, anadjusting wheel 5 and aring 8, the staywire tightening wheel 7 and thering 8 are installed inside theadjusting wheel 5, andteeth 7a are arranged on the staywire tightening wheel 7 and correspond totooth grooves 8a on thering 8 to form a tooth groove structure. When the staywire tightening wheel 7 is attached to thering 8, the staywire tightening wheel 7 can only rotate in one direction, and only thestay wires 3a and 3b can be tightened; when thewire takeup pulley 7 and theloop 8 are in the disengaged state, thewire takeup pulley 7 can rotate in both directions to either tighten or loosen thewires 3a and 3 b.

The fixedseat 4 is provided with a limitingtooth groove 4a, theadjusting wheel 5 is provided with a limitingtooth 5b, and when the limitingtooth 5b is meshed with the limitingtooth groove 4a, theadjusting wheel 5 cannot rotate, so that the positions of theadjusting wheel 5 and thepull wires 3a and 3b are locked; when the limitingteeth 5b are separated from the limitingtooth grooves 4a, theadjusting wheel 5 can rotate in two directions, so that thepull wires 3a and 3b are driven to adjust the positions of therotating cap 2 and the communicatingpipe 11.

The difference between the embodiment and the first embodiment is that the locking handle 6 of the first embodiment is replaced by the limitingtooth grooves 4a and the limitingteeth 5b, the composition mode of thewire groove 12 is different, and other structures are the same.

EXAMPLE III

As shown in fig. 7, the rotatable endoscopic external passage comprises a mountingcap 1, arotating cap 2, apull wire 3, a communicatingpipe 11 and a pull wire control device. The stay wire control device comprises a fixedseat 4, a staywire tightening wheel 7, anadjusting wheel 5, aring 8 and a one-way bearing 9, wherein the staywire tightening wheel 7, thering 8 and the one-way bearing 9 are installed inside theadjusting wheel 5, and the one-way bearing 9 is fixed inside theadjusting wheel 5 and is positioned between the adjustingwheel 5 and the staywire tightening wheel 7. When the staywire tightening wheel 7 is attached to the one-way bearing 9, the staywire tightening wheel 7 can only rotate in one direction and only tighten the stay wire; when the staywire tightening wheel 7 and the one-way bearing 9 are in a separated state, the staywire tightening wheel 7 can rotate in two directions to tighten or loosen the stay wire.

The fixedseat 4 is also provided with alocking handle 6, when the locking handle 6 is rotated, thecam part 6a of the locking handle is contacted with theadjusting wheel 5, and theadjusting wheel 5 is extruded to be incapable of rotating, so that the positions of theadjusting wheel 5 and the pull wire are locked; when the locking handle 6 is rotated reversely, thecam part 6a is separated from theadjusting wheel 5, and theadjusting wheel 5 can rotate bidirectionally to drive the pull wire to adjust the position of the rotating cap and the communicating pipe.

The difference between the present embodiment and the first embodiment is only that theteeth 7a and thetooth grooves 8a of the first embodiment are replaced by the one-way bearings 9, and the other structures are the same.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (10)

Translated fromChinese

1.一种可旋转的内镜外通道，包括安装帽(1)，所述安装帽(1)安装在内镜的先端部；其特征在于，1. A rotatable endoscope outer channel, comprising a mounting cap (1), and the mounting cap (1) is mounted on the apex of the endoscope; it is characterized in that,所述内镜外通道还包括旋转帽(2)、拉线(3)与拉线控制装置，安装帽(1)上设置有线连接件，旋转帽(2)可旋转地设置于安装帽(1)上，旋转帽(2)上设有线固定件；The outer channel of the endoscope further comprises a rotating cap (2), a pulling wire (3) and a pulling wire control device, the installation cap (1) is provided with a wire connector, and the rotating cap (2) is rotatably arranged on the installation cap (1). , the rotating cap (2) is provided with a wire fixing member;所述拉线(3)包括第一拉线(3a)和第二拉线(3b)，第一拉线(3a)的第一端经过线连接件后沿一个方向绕安装帽(1)延伸后连接至线固定件，第二拉线(3b)的第一端经过线连接件后沿与第一拉线(3a)相反的方向绕安装帽(1)延伸后连接至线固定件；The pulling wire (3) includes a first pulling wire (3a) and a second pulling wire (3b), the first end of the first pulling wire (3a) is connected to the wire after extending in one direction around the mounting cap (1) after passing through the wire connecting piece a fixing piece, the first end of the second pulling wire (3b) is connected to the wire fixing piece after extending around the mounting cap (1) in the opposite direction to the first pulling wire (3a) after passing through the wire connecting piece;第一拉线(3a)与第二拉线(3b)的第二端均连接于拉线控制装置上。The second ends of the first pull wire (3a) and the second pull wire (3b) are both connected to the pull wire control device.2.根据权利要求1所述的可旋转的内镜外通道，其特征在于，所述拉线控制装置(4)包括可旋转设置的调节轮(5)，调节轮(5)上设有拉线连接件(51)；第一拉线(3a)与第二拉线(3b)的第二端分别沿不同的方向绕拉线连接件(51)设置，第一拉线(3a)与第二拉线(3b)的第二端点分别固定至拉线连接件(51)上或两拉线的端点连接在一起。2. The rotatable endoscope outer channel according to claim 1, wherein the pull wire control device (4) comprises a rotatably arranged adjusting wheel (5), and the adjusting wheel (5) is provided with a pull wire connection component (51); the second ends of the first pull wire (3a) and the second pull wire (3b) are respectively arranged around the pull wire connector (51) in different directions, and the first pull wire (3a) and the second pull wire (3b) The second end points are respectively fixed to the pull wire connecting member (51) or the end points of the two pull wires are connected together.3.根据权利要求2所述的可旋转的内镜外通道，其特征在于，所述旋转帽(2)与安装帽(1)之间设有线槽(12)，两拉线设置于线槽(12)内。3. The rotatable endoscope outer channel according to claim 2, wherein a wire groove (12) is provided between the rotating cap (2) and the mounting cap (1), and the two pull wires are arranged in the wire groove (1). 12) within.4.根据权利要求2或3所述的可旋转的内镜外通道，其特征在于，所述拉线控制装置还包括调节轮锁定件，以对调节轮(5)的旋转进行锁定。4. The rotatable endoscope outer channel according to claim 2 or 3, characterized in that, the pull wire control device further comprises an adjustment wheel locking member to lock the rotation of the adjustment wheel (5).5.根据权利要求4所述的可旋转的内镜外通道，其特征在于，所述拉线控制装置还包括固定座(4)，调节轮(5)可旋转地设置于固定座(4)上；所述调节轮锁定件为铰接地设置于固定座(4)上的锁定手柄(6)，锁定手柄(6)上设有凸轮部(6a)；转动锁定手柄(6)使凸轮部(6a)与调节轮(5)相接触，以锁定调节轮(5)；或，5. The rotatable endoscope outer channel according to claim 4, wherein the cable control device further comprises a fixing seat (4), and the adjusting wheel (5) is rotatably arranged on the fixing seat (4) the adjusting wheel locking piece is a locking handle (6) hingedly arranged on the fixing seat (4), and the locking handle (6) is provided with a cam portion (6a); rotating the locking handle (6) makes the cam portion (6a) ) in contact with the adjustment wheel (5) to lock the adjustment wheel (5); or,所述拉线控制装置还包括固定座(4)，调节轮(5)可旋转地设置于固定座(4)上；所述固定座(4)上设有限位齿槽(4a)，所述调节轮(5)上设有限位齿(5b)；限位齿(5b)与限位齿槽(4a)啮合，以锁定调节轮(5)。The cable control device further comprises a fixing seat (4), and the adjusting wheel (5) is rotatably arranged on the fixing seat (4); The wheel (5) is provided with a limit tooth (5b); the limit tooth (5b) is engaged with the limit tooth slot (4a) to lock the adjustment wheel (5).6.根据权利要求2或3所述的可旋转的内镜外通道，其特征在于，所述拉线控制装置还包括拉线收紧轮(7)，拉线收紧轮(7)可旋转地套设于调节轮(5)的内腔中；拉线连接件(51)上设有通孔(5a)，第一拉线(3a)与第二拉线(3b)的第二端沿不同方向绕拉线连接件(51)设置后穿过通孔(5a)进入调节轮(5)的内腔，两拉线的第二端直接固定于拉线收紧轮(7)上或是沿相同方向绕拉线收紧轮(7)缠绕后固定于拉线收紧轮(7)上。6. The rotatable endoscope outer channel according to claim 2 or 3, characterized in that, the cable control device further comprises a cable tightening wheel (7), and the cable tightening wheel (7) is rotatably sleeved in the inner cavity of the adjusting wheel (5); the pull-wire connector (51) is provided with a through hole (5a), and the second ends of the first pull-wire (3a) and the second pull-wire (3b) are wound around the pull-wire connector in different directions (51) After setting, pass through the through hole (5a) into the inner cavity of the adjusting wheel (5), and the second ends of the two pulling wires are directly fixed on the pulling wire tightening wheel (7) or are wound around the pulling wire tightening wheel (7) in the same direction. 7) After winding, it is fixed on the pull wire tightening wheel (7).7.根据权利要求6所述的可旋转的内镜外通道，其特征在于，所述拉线控制装置还包括拉线收紧锁止组件，以对拉线收紧轮(7)相对于调节轮(5)的旋转进行锁止。7. The rotatable endoscope outer channel according to claim 6, characterized in that, the cable control device further comprises a cable tightening locking assembly, so as to adjust the cable tightening wheel (7) relative to the adjusting wheel (5) ) is rotated to lock.8.根据权利要求7所述的可旋转的内镜外通道，其特征在于，所述拉线收紧锁止组件包括环圈(8)，拉线收紧轮(7)和环圈(8)安装在所述调节轮(5)内部；拉线收紧轮(7)上设有齿(7a)，环圈(8)上对应设有齿槽(8a)；拉线收紧轮(7)与环圈(8)贴合时，拉线收紧轮(7)只能单向转动以收紧两拉线，拉线收紧轮(7)与环圈(8)分离时，拉线收紧轮(7)双向转动以收紧或者松开拉线；或，8. The rotatable endoscope outer channel according to claim 7, wherein the cable tightening and locking assembly comprises a ring (8), the cable tightening wheel (7) and the ring (8) are installed Inside the adjusting wheel (5); the cable tightening wheel (7) is provided with teeth (7a), and the ring (8) is correspondingly provided with tooth slots (8a); the cable tightening wheel (7) and the ring (8) When fitting, the cable tightening wheel (7) can only rotate in one direction to tighten the two cables. When the cable tightening wheel (7) is separated from the ring (8), the cable tightening wheel (7) rotates in both directions. to tighten or loosen the cable; or,所述拉线收紧锁止组件包括环圈(8)和单向轴承(9)，拉线收紧轮(7)、环圈(8)和单向轴承(9)安装在所述调节轮(5)内部，单向轴承(9)固定在调节轮(5)内部，且位于调节轮(5)与拉线收紧轮(7)之间；拉线收紧轮(7)与单向轴承(9)贴合时，拉线收紧轮(7)只能单向转动以收紧两拉线，拉线收紧轮(7)与单向轴承(9)分离后，拉线收紧轮(7)可双向转动以收紧或者松开拉线。The cable tightening and locking assembly includes a ring (8) and a one-way bearing (9), and the cable tightening wheel (7), the ring (8) and the one-way bearing (9) are mounted on the adjusting wheel (5). ), the one-way bearing (9) is fixed inside the adjusting wheel (5), and is located between the adjusting wheel (5) and the cable take-up wheel (7); the cable take-up wheel (7) and the one-way bearing (9) When fitting, the cable tightening wheel (7) can only be rotated in one direction to tighten the two cables. After the cable tightening wheel (7) is separated from the one-way bearing (9), the cable tightening wheel (7) can be rotated in both directions. Tighten or loosen the cable.9.根据权利要求1所述的可旋转的内镜外通道，其特征在于，所述线连接件为设置于安装帽(1)上的穿线孔(1a)，线固定件为设置于旋转帽(2)上的线固定孔(2a)，且所述线固定孔(2a)有两个以分别供第一拉线(3a)与第二拉线(3b)的第一端固定。9. The rotatable endoscope outer channel according to claim 1, wherein the wire connecting member is a wire threading hole (1a) provided on the mounting cap (1), and the wire fixing member is provided on the rotating cap (2) There are two wire fixing holes (2a) on (2), and there are two wire fixing holes (2a) for fixing the first ends of the first pulling wire (3a) and the second pulling wire (3b) respectively.10.根据权利要求1或9所述的可旋转的内镜外通道，其特征在于，所述内镜外通道还包括连通管(11)，连通管(11)一端与旋转帽(2)相连接，另一端与拉线控制装置相连接。10. The rotatable endoscope outer channel according to claim 1 or 9, characterized in that, the endoscope outer channel further comprises a communication tube (11), and one end of the communication tube (11) is in phase with the rotating cap (2). connection, and the other end is connected to the pull wire control device.

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