Insertion member for endoscope, and endoscope

Abstract

The invention relates to the technical field of endoscopes, and provides an insertion part of an endoscope and the endoscope. The insertion part of the endoscope comprises a tube body and a head end seat connected to the far end of the tube body, and a first through hole and a second through hole which are formed in the head end seat in the near-far end direction are formed in the head end seat; the first channel pipe and the second channel pipe are arranged in the pipe body; the first channel pipe is communicated with the first through hole to form a first working channel, and the second channel pipe is communicated with the second through hole to form a second working channel; the laser transmission optical fiber is installed in the second working channel, and the far end of the laser transmission optical fiber is used for being exposed to a far end opening of the second working channel so as to output laser to the outer side of the far end of the second through hole; and the imaging element is arranged on the head end seat and is used for shooting an object positioned on the outer side of the head end seat. The invention mainly solves the technical problem that the operation of an endoscope which needs to use a laser transmission optical fiber is inconvenient.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes. Background Art

[0002] With the rapid development of science and medical technology, the use of endoscopes for minimally invasive or non-invasive medical examinations and treatments has become widely popular. For example, for lithotripsy of kidney stones, the operator can use the bendable front end of the ureteroscope to find the stones, then extend the laser transmission fiber through the working channel on the endoscope into the kidney to aim at the stones, and use laser energy to break the stones. During the operation, it is generally necessary to infuse physiological saline into the kidney through the working channel on the endoscope, and finally, under the action of the negative pressure suction sheath, the broken stones are sucked out of the body by water flow.

[0003] However, during clinical use, traditional ureteral endoscopes require the laser transmission optical fiber to be inserted into the kidney through the working channel on the endoscope, which brings inconvenience to the operator and increases the duration of the operation. Summary of the invention

[0004] The present invention mainly solves the technical problem that there are inconveniences in the operation of an endoscope which requires the use of a laser transmission optical fiber.

[0005] In a first aspect, an embodiment provides an insertion component of an endoscope.

[0006] Insertion parts of the endoscope, including:

[0007] A tube body, used to be connected to an operating handle of the endoscope;

[0008] A head end seat connected to the distal end of the tube body, wherein the head end seat is provided with a first through hole and a second through hole arranged in a proximal-distal direction;

[0009] a first channel tube and a second channel tube, wherein the first channel tube and the second channel tube are arranged in the tube body; the first channel tube is communicated with the first through hole to form a first working channel, and the second channel tube is communicated with the second through hole to form a second working channel;

[0010] A laser transmission optical fiber is installed in the second working channel, and the distal end of the laser transmission optical fiber is used to be exposed at the distal end opening of the second working channel to output laser light to the distal outer side of the second through hole;

[0011] and an imaging element, wherein the imaging element is arranged on the head end seat and is used for photographing an object located outside the head end seat.

[0012] In one embodiment, a sealing structure is provided between the outer peripheral surface of the laser transmission optical fiber and the inner wall of the second working channel.

[0013] In one embodiment, the laser transmission optical fiber is movably arranged along the extension direction of the second working channel, and the sealing structure is a dynamic sealing structure.

[0014] In one embodiment, the dynamic sealing structure is a sealing ring.

[0015] In one embodiment, the second through hole is a stepped hole, including a distal hole segment and a proximal hole segment arranged in sequence from the distal end to the proximal end, the diameter of the proximal hole segment is larger than that of the distal hole segment, and an annular step is formed between the distal hole segment and the proximal hole segment; the second channel tube is inserted into the proximal hole segment, and the sealing ring is arranged between the distal end face of the second channel tube and the annular step.

[0016] In one embodiment, the distal end of the laser transmission optical fiber is fixed in the second working channel.

[0017] In one embodiment, the laser transmission optical fiber includes an inner core and an outer sheath, and the inner core includes an extending section extending from a distal end of the outer sheath.

[0018] In one embodiment, the distal end face of the laser transmission optical fiber is a plane perpendicular to the extension direction of the laser transmission optical fiber.

[0019] In one embodiment, in a direction perpendicular to the proximal-distal direction of the head end seat, the head end seat has a first side and a second side, the imaging element is arranged on the first side of the head end seat, and the first through hole and the second through hole are arranged on the second side of the head end seat; the diameter of the first through hole is larger than that of the second through hole, and the first through hole is closer to the center of the head end seat than the second through hole.

[0020] In a second aspect, an endoscope is provided in one embodiment.

[0021] Endoscopes, including:

[0022] An insert component as described in any one of the above items;

[0023] And an operating handle, wherein the operating handle is connected to the proximal end of the insertion component, the operating handle has a first port and a second port, the proximal end of the first channel tube is connected to the first port, the proximal end of the laser transmission optical fiber is connected to the second port, and the second port is used for connecting the laser transmission optical fiber to a laser device host, and is used to introduce laser into the laser transmission optical fiber.

[0024] Beneficial effects of the present invention:

[0025] According to the insertion component of the endoscope in the above embodiment, a first through hole and a second through hole are provided on the head end seat, and the insertion component is provided with a first channel tube connected with the first through hole to form a first working channel, and a second channel tube connected with the second through hole to form a second working channel. The first channel tube and the second channel tube can be led to the operating handle through the tube body and connected with the corresponding ports on the operating handle to meet different usage requirements; the insertion component also includes a laser transmission optical fiber installed in the second working channel, which realizes the pre-installation of the laser transmission optical fiber. There is no need to insert the laser transmission optical fiber on site during clinical use, which can save time for inserting the laser transmission optical fiber into the endoscope on site and is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a stereoscopic diagram of an embodiment of an endoscope in the present invention;

[0027] Figure 2 yes Figure 1 A partial enlarged view of the distal end of the insertion component;

[0028] Figure 3 yes Figure 2 Schematic diagram of the installation structure of the laser transmission optical fiber;

[0029] Figure 4 yes Figure 2 Schematic diagram of the laser transmission fiber before it extends out of the head end seat;

[0030] Figure 5 It is a schematic diagram of the connection relationship between the channel tube and the head end seat at one viewing angle;

[0031] Figure 6 is a schematic diagram of the connection relationship between the channel tube and the head end seat from another perspective;

[0032] Figure 7 1 is a schematic diagram of the proximal structure of the head end seat;

[0033] Figure 8 It is an orthographic projection view of the distal end of the head end seat;

[0034] Fig. 9 yes Figure 1 A schematic diagram of the structure of the optical fiber driving device;

[0035] Fig.10 yes Fig. 9 A cross-sectional view of

[0036] Fig.11 yes Fig. 9 Exploded diagram of

[0037] Fig.12 yes Fig.11A schematic diagram of the assembly relationship between the optical fiber fixing seat and the device base;

[0038] Fig.13 is a schematic diagram of the structure of an optical fiber fixing seat;

[0039] Fig.14 It is a structural schematic diagram of the operating part;

[0040] Fig.15 is an exploded view of another embodiment of the optical fiber driving device;

[0041] Fig.16 yes Fig.15 Schematic diagram of the assembly relationship between the middle spiral sleeve, the optical fiber fixing seat and the device base;

[0042] Fig.17 It is a stereoscopic view of another embodiment of the endoscope in the present invention.

[0043] List of feature names corresponding to the reference numerals in the figure:

[0044] 100, operating handle; 110, housing; 121, first port; 122, second port;

[0045] 200, inserting part;

[0046] 210, pipe body; 211, bending section; 212, main body section;

[0047] 220, head end seat; 221, first through hole; 222, second through hole; 2221, distal hole section; 2222, proximal hole section; 223, mounting hole; 224, sealing ring;

[0048] 231, a first channel tube; 232, a second channel tube;

[0049] 241. Imaging element; 242. Illuminating element;

[0050] 300. Optical fiber driving device;

[0051] 310, device base; 311, active chamber; 312, mounting port; 313, cavity bottom wall; 3131, optical fiber perforation; 314, snap-in groove; 3151, housing connection end; 3152, outer end; 316, limiting convex portion; 317, annular groove; 318, through groove;

[0052] 320, optical fiber fixing seat; 321, seat body; 322, transmission pin; 3231, first connection end; 3232, second connection end; 324, optical fiber pin; 325, connector connection hole; 326, indicator scale;

[0053] 330, operating member; 331, axial limiting surface; 332, limiting groove;

[0054] 333, operating body; 3331, center hole; 3332, anti-rotation protrusion; 334, spiral sleeve; 3341, anti-rotation groove; 335, driving groove;

[0055] 340, damping ring;

[0056] 400, laser transmission optical fiber; 410, inner core; 420, outer sheath. DETAILED DESCRIPTION

[0057] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0058] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0059] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0060] In an embodiment of the present invention, the insertion component of the endoscope is provided with a first working channel and a second working channel. The first working channel can be used for introducing perfusion fluid, and the second working channel can be used for installing a laser transmission optical fiber. There is no need to temporarily insert the laser transmission optical fiber into the endoscope during clinical use of the endoscope, which makes it more convenient to use and helps to simplify the operator's surgical operation process and shorten the operation time.

[0061] At the same time, the laser transmission optical fiber does not need to occupy the space in the fluid perfusion channel and will not affect the perfusion capacity of the endoscope, which is conducive to ensuring the water output at the distal end of the endoscope and improving the efficiency of surgical stone removal.

[0062] Embodiments of the endoscope of the present invention:

[0063] Please refer to Figure 1 In one embodiment, the endoscope includes an operating handle 100 and an insertion component 200 connected to the operating handle 100, the insertion component 200 includes a tube body 210 for connecting to the operating handle 100 of the endoscope, a head end seat 220 connected to the distal end of the tube body 210, and a first channel tube 231 and a second channel tube 232 passing through the tube body 210 (see Figure 5 and Figure 6 ).

[0064] Those skilled in the art should be aware that the "proximal end" and "distal end" appearing in this document are conventional terms in the medical field. For an instrument to be operated, the proximal end is the end close to the instrument operator, and the distal end is the end away from the instrument operator, usually the end that first enters the patient's body; the proximal end and the distal end can refer to the directions shown in the figure.

[0065] Those skilled in the art will appreciate that the operating handle 100 can be held by an operator to operate the endoscope. In some embodiments, for example, the depth of insertion of the tube body 210 into the patient's body can be adjusted, the tube body 210 can be bent, image parameters can be adjusted, etc. Different ports can be provided to allow cables, optical fibers, pipes, etc. in the tube body 210 to be led out to the outside.

[0066] The tube body 210 may include a bending adjustment section 211 located at the distal end and a main body section 212 connected between the bending adjustment section 211 and the operating handle 100 . The bending adjustment section 211 can realize the deflection of the head end seat 220 , and the main body section 212 can bear and drive the bending adjustment section 211 and the head end seat 220 .

[0067] Those skilled in the art should know that, for an endoscope, the insertion component 200 may further include an imaging element 241 and a lighting element 242, which are disposed on the head end seat 220. The imaging element 241 is used to photograph an object located outside the head end seat 220, and the lighting element 242 can illuminate the object outside the head end seat 220 so that the imaging element 241 can form an image. As an example, the lighting element 242 may be an LED lamp.

[0068] In a specific embodiment, please refer to Figures 2 to 8The distal end surface of the head end seat 220 may be provided with a mounting hole 223 for mounting the imaging element 241 and the lighting element 242, and the imaging element 241 and the lighting element 242 may be fixed in the mounting hole 223. The mounting hole 223 of the imaging element 241 and the mounting hole 223 of the lighting element 242 may be an integral hole or may be independent of each other.

[0069] The specific structures of the parts of the operating handle 100 that are not directly related to the improvement of the present invention, as well as the tube body 210, the imaging element 241, etc., can all refer to the existing structures in the related art and will not be described here. The installation structure of the laser transmission optical fiber 400 will be first introduced below.

[0070] In some current endoscopes, considering that the diameter of the insertion component 200 is small, only one working channel is often provided, and the working channel can extend from the corresponding port on the operating handle 100 to the distal surface of the head end seat 220. Through the working channel, liquid can be transported to the outside of the head end seat 220 for perfusion, and the laser transmission optical fiber 400 can also be inserted. In the embodiment of the present invention, the head end seat 220 is provided with a first through hole 221 and a second through hole 222 arranged in the proximal and distal directions, the first channel tube 231 arranged in the tube body 210 is connected to the first through hole 221 to form a first working channel, and the second channel tube 232 arranged in the tube body 210 is connected to the second through hole 222 to form a second working channel. The laser transmission optical fiber 400 is installed in the second working channel when the endoscope is manufactured, and the distal end of the laser transmission optical fiber 400 is used to be exposed to the distal opening of the second working channel to output laser to the distal outer side of the second through hole 222.

[0071] It should be noted that the distal end of the laser transmission optical fiber 400 can be exposed in a manner of extending out of the second working channel, or can be exposed in a manner of being flush with the distal opening of the second working channel, or can be exposed in a manner of being retracted into the distal opening of the second working channel, and can output laser light to the distal outer side of the second through hole 222 to meet the purpose of laser emission. For example, in some embodiments, the endoscope can be a ureteral endoscope, in which case the laser transmission optical fiber 400 can meet the need of breaking up stones.

[0072] The shapes and positions of the first through hole 221 and the second through hole 222 are not limited as long as they meet the use requirements. For example, the first through hole 221 and the second through hole 222 can both be round holes as shown in the figure; in some embodiments, the head end seat 220 has a first side and a second side in a direction perpendicular to the proximal and distal directions of the head end seat 220, please refer to Figure 8, the imaging element 241 is arranged on the first side of the head end seat 220, the first through hole 221 and the second through hole 222 are arranged on the second side of the head end seat 220; the diameter of the first through hole 221 is larger than that of the second through hole 222, and the first through hole 221 is closer to the center of the head end seat 220 than the second through hole 222. Since the diameter of the laser transmission optical fiber 400 is relatively thin, the radial space on the head end seat 220 can be effectively utilized by adopting the above arrangement of the first through hole 221 and the second through hole 222, so as to avoid affecting the diameter of the insertion component 200 due to the separate setting of the working channel for installing the laser transmission optical fiber 400.

[0073] In order to facilitate the connection between the first channel tube 231 and the first through hole 221, the first through hole 221 may be a stepped hole with a diameter on the proximal side larger than that on the distal side, and the first channel tube 231 may be inserted in the position with a larger diameter on the proximal side of the first through hole 221. Similarly, the second through hole 222 may also be a stepped hole with a diameter on the proximal side larger than that on the distal side, and the second channel tube 232 may be inserted in the position with a larger diameter on the proximal side of the second through hole 222.

[0074] In some embodiments, the laser transmission optical fiber 400 includes an inner core 410 and an outer skin 420, which can ensure the structural strength of the laser transmission optical fiber 400, and is conducive to preventing the laser transmission optical fiber 400 from being damaged when being pushed to the distal end and pulled back to the proximal end. The inner core 410 may include an extension section extending from the distal end of the outer skin 420, which is conducive to avoiding interference with the smooth emission of the laser from the distal end face of the laser transmission optical fiber 400. In some embodiments, the distal end face of the laser transmission optical fiber 400 can be a plane perpendicular to the extension direction of the laser transmission optical fiber 400, which is conducive to avoiding damage to the distal end and piercing the mucosa in the patient's cavity.

[0075] The laser transmission optical fiber 400 can be fixedly installed in the second working channel, or can be movably installed in the second working channel. For example, the distal end of the laser transmission optical fiber 400 can be directly fixed in the second working channel by bonding, interference fit, etc. If the laser transmission optical fiber 400 needs to be telescopically adjusted, the gap and friction between the laser transmission optical fiber 400 and the second working channel can be controlled to ensure the movable adjustment of the laser transmission optical fiber 400.

[0076] Since the insertion component 200 may be in a liquid environment after being inserted into the patient's body, such as an environment with perfusion fluid, in order to prevent the liquid from leaking from the gap between the laser transmission optical fiber 400 and the second working channel, in some embodiments, a sealing structure may be provided between the outer peripheral surface of the laser transmission optical fiber 400 and the inner wall of the second working channel. In the case where the laser transmission optical fiber 400 is fixed in the second working channel, the sealing structure may be a sealing ring, a sealant, etc. In the case where the laser transmission optical fiber 400 is movable in the second working channel, the sealing structure is a dynamic sealing structure, such as Figure 3 The sealing ring 224 is shown. It should be noted that the sealing structure can be provided at the position corresponding to the laser transmission optical fiber 400 and the head end seat 220 , or at other positions, such as the position corresponding to the second channel tube 232 .

[0077] In order to realize the installation of the sealing ring 224, in a specific embodiment, please refer to Figure 7 The second through hole 222 is a stepped hole, including a distal hole section 2221 and a proximal hole section 2222 arranged in sequence from the distal end to the proximal end. The diameter of the proximal hole section 2222 is larger than that of the distal hole section 2221, and an annular step is formed between the distal hole section 2221 and the proximal hole section 2222. The second channel tube 232 can be inserted into the proximal hole section 2222, and the sealing ring 224 is arranged between the annular step and the distal end face of the second channel tube 232. Since the diameter of the second through hole 222 matches the laser transmission optical fiber 400, the space is very small. If a sealing ring groove is set on the hole wall of the second through hole 222, it will be difficult to install the sealing ring 224. The above structure can conveniently realize the axial limit of the sealing ring 224 to prevent the sealing ring 224 from falling out of the head end seat 220. The sealing ring 224 is made of elastic material and can elastically abut against the hole wall of the second through hole 222 and the outer peripheral surface of the laser transmission optical fiber 400, and maintains sealing by means of compression deformation generated by the abutment to prevent liquid from passing through.

[0078] Please refer to Figure 1 The operating handle 100 has a first port 121 and a second port 122. The proximal end of the first channel tube 231 is connected to the first port 121, and the proximal end of the laser transmission optical fiber 400 is connected to the second port 122. The second port 122 is used for connecting the laser transmission optical fiber 400 to the laser device host, and is used to introduce laser light into the laser transmission optical fiber 400. It can be understood by those skilled in the art that the specific form of the first port 121 is not limited, as long as it can meet the use requirements, for example, it can be a Luer connector for connecting the perfusion device; and the second port 122 can be in any form that can achieve optical fiber connection.

[0079] When manufacturing the endoscope, since a separate second working channel is provided, the laser transmission optical fiber 400 can be pre-installed in the endoscope before using the endoscope. When in use, it is only necessary to connect the laser transmission optical fiber 400 to the laser device host, which can save the time of inserting the optical fiber on site and improve the efficiency of the operation.

[0080] In some embodiments, when the laser transmission optical fiber 400 is fixed in the second working channel, the second port 122 may be a fixed port for fixed connection of the proximal end of the laser transmission optical fiber 400, for example Fig.17As shown; in the case where the laser transmission optical fiber 400 is movably arranged in the second working channel, the second port 122 can be an active port arranged on the optical fiber driving device 300. In some other embodiments, the optical fiber driving device 300 can also be omitted, and the laser transmission optical fiber 400 can be manually driven to extend and retract by the operator; or, the optical fiber driving device 300 can be replaced with other structural forms that can drive the laser transmission optical fiber 400 to extend and retract, for example, a push button that moves along a straight line is arranged on the housing 110 of the operating handle 100, and the proximal end of the laser transmission optical fiber 400 is connected to the push button, and the push button is relied on to drive the laser transmission optical fiber 400 to extend and retract.

[0081] Next, this specification will further introduce the optical fiber driving device 300.

[0082] The optical fiber driving device 300 is connected to the housing 110 of the operating handle 100, which is convenient for the operator to operate. Figures 9 to 11 , the optical fiber driving device 300 may include a device base 310, an optical fiber fixing seat 320 and an operating member 330. The device base 310 is fixed on the housing 110, and serves as the installation base of the optical fiber driving device 300; the optical fiber fixing seat 320 is fixedly connected to the laser transmission optical fiber 400 whose position is to be adjusted, so as to drive the laser transmission optical fiber 400 to move back and forth; the operating member 330 is rotatably mounted on the outside of the device base 310, and a spiral transmission structure is provided between the operating member 330 and the optical fiber fixing seat 320, and the spiral transmission structure is used to convert the rotation of the operating member 330 into a linear motion of the optical fiber fixing seat 320, and when the operating member 330 rotates, the optical fiber fixing seat 320 generates a motion along the reciprocating direction, thereby realizing the telescopic adjustment of the laser transmission optical fiber 400, for example, adjusting to Figure 2 shown in the extended state, and Figure 4 The unextended state is shown, and the extended and retracted lengths can be determined as required.

[0083] The specific structure of each component in an embodiment of the optical fiber driving device 300 will be introduced below.

[0084] The device base 310 is fixed on the housing 110. The device base 310 may be a cylindrical structure, and the inner cavity of the device base 310 forms an active chamber 311. The active chamber 311 may be an open chamber with a mounting port 312 at one end. Fig.10 , Fig.11 As shown, the active chamber 311 has an installation opening 312 for the optical fiber fixing seat 320 to be installed and a cavity bottom wall 313 opposite to the installation opening 312, and the optical fiber fixing seat 320 can be installed and removed from the installation opening 312. In some other embodiments, the installation opening 312 of the active chamber 311 can also be a closed structure, for example, a cover is provided to close the installation opening 312 of the active chamber 311.

[0085] The device base 310 and the housing 110 may be fixed in any manner, such as bonding, clamping, threaded connection, fastener connection, etc. In some embodiments, reference may be made to Fig. 9 , Fig.10 and Fig.13 , a snap-in groove 314 is provided on the outer circumference of the device base 310, and correspondingly, a limiting protrusion adapted to the snap-in groove 314 can be provided on the shell 110, and the limiting protrusion is embedded in the snap-in groove 314 to fix the device base 310. The snap-in groove 314 can be an arc groove extending along the outer circumference of the device base 310, and the number of arc grooves is not limited, for example, it can be two. The shell 110 can include a first shell and a second shell that are interlocked, and a limiting protrusion can be provided on the first shell and the second shell respectively. When assembling the endoscope, the first shell and the second shell can clamp the distal end of the device base 310, and the limiting protrusions on the inner sides of the first shell and the second shell can be embedded in the two arc grooves on the device base 310, thereby preventing the device base 310 from detaching from the shell 110 and preventing the device base 310 from rotating.

[0086] In some embodiments, the snap-in slot 314 can be set at the distal end of the device base 310. After the device base 310 is fixed to the shell 110, the proximal end of the device base 310 forms a protruding portion protruding out of the shell 110, and the operating member 330 can be set on the protruding portion.

[0087] The device base 310 adopts the above-mentioned assembly structure, which basically does not occupy additional space in the shell 110. A minor modification to a part of the existing shell 110 can meet the fixing requirements of the device base 310, which is conducive to cost saving.

[0088] After the optical fiber fixing seat 320 is arranged in the active chamber 311, the outer peripheral surface can be matched with the inner wall of the active chamber 311 to achieve positioning, and can move along the reciprocating direction of the laser transmission optical fiber 400. Fig.10 and Fig.11 In some embodiments, the optical fiber fixing seat 320 has a first connection end 3231 and a second connection end 3232, and the first connection end 3231 and the second connection end 3232 are respectively located at opposite ends of the optical fiber fixing seat 320, and the first connection end 3231 is for connecting the laser transmission optical fiber 400, and the second connection end 3232 is provided with an optical fiber interface, and the optical fiber interface is for connecting the laser transmission optical fiber 400 to the laser device host, and is used to introduce laser into the laser transmission optical fiber 400.

[0089] In a specific embodiment, the optical fiber interface may include an optical fiber plug 324 and a connector connection hole 325. The laser transmission optical fiber 400 may be plugged into the optical fiber plug 324 and fixed, for example, by bonding, and the connector connection hole 325 may have an internal thread to facilitate connection with a corresponding optical fiber connector. The optical fiber plug 324 may adopt a conventional structure and material in the art, and the connector connection hole 325 may also adopt a commonly used specification in the art to match an adapted connector.

[0090] The operating member 330 has an assembly hole, through which the operating member 330 can be rotatably mounted on the outside of the device base 310. In a specific embodiment, the operating member 330 can be a circular operating knob, and a convex and concave structure can be provided on the outer periphery to prevent slipping and facilitate the operator to conveniently and effectively rotate the operating member 330.

[0091] In order to prevent the operating member 330 from being separated from the device base 310, in one embodiment, please refer to Fig.11 The device base 310 has a shell connecting end 3151 connected to the shell 110 and an outer end 3152 away from the shell 110. The device base 310 is provided with a limiting protrusion 316 on the outer circumferential surface of the outer end 3152. The assembly hole of the operating member 330 is a step hole, and the step hole forms an axial limiting surface 331. The axial limiting surface 331 and the limiting protrusion 316 form a positioning along the reciprocating movement direction of the laser transmission optical fiber 400. After the operating member 330 is installed on the device base 310, the device base 310 is fixed to the shell 110, and the operating member 330 can be positioned between the limiting protrusion 316 on the device base and the shell 110 of the operating handle 100.

[0092] In some embodiments, please refer to Fig.10 A fiber through hole 3131 is provided on the bottom wall 313 of the active chamber 311. The fiber through hole 3131 is a stepped hole, including a small diameter section close to the active chamber 311 and a large diameter section away from the active chamber 311. The large diameter section is used for the second channel tube 232 for inserting the laser transmission optical fiber 400 and fixedly connected thereto, and the small diameter section is used for the laser transmission optical fiber 400 to pass through and be connected to the optical fiber fixing seat 320. An annular step is formed at the transition portion between the large diameter section and the small diameter section. The annular step is used for axially positioning the second channel tube 232, so as to facilitate leading the laser transmission optical fiber 400 out of the second channel tube 232, and to conveniently fix the proximal end of the second channel tube 232. The structure is compact, and it is also beneficial to prevent the proximal end of the laser transmission optical fiber 400 from extending too long from the second channel tube 232 and bending when subjected to thrust.

[0093] In some embodiments, the fiber driving device 300 may further include a damping ring 340 (e.g., an O-ring). The damping ring 340 is disposed between the outer periphery of the device base 310 and the operating member 330. The damping ring 340 is used to increase the relative motion damping between the operating member 330 and the device base 310. When operating the operating member 330, the damping ring 340 can provide appropriate friction to enhance the operator's operating feel. At the same time, during the laser lithotripsy process, the laser energy will push the laser transmission optical fiber 400 to move. With the damping ring 340, the laser transmission optical fiber 400 can be effectively prevented from moving axially. The number of the damping rings 340 may be more than two, such as Fig.10 , two damping rings 340 are respectively arranged at the axial ends of the operating member 330. In some embodiments, the damping ring 340 can be positioned on the device base 310 or the operating member 330 along the reciprocating direction of the laser transmission optical fiber 400. In order to realize the positioning of the damping ring 340 along the above-mentioned reciprocating direction, an annular groove 317 can be provided on the outer peripheral surface of the device base 310 or on the wall of the assembly hole of the operating member 330, and the damping ring 340 is installed in the annular groove 317. In some other embodiments, the damping ring 340 can also be positioned by bonding or by relying on friction.

[0094] For the screw drive structure, please refer to Fig.10 , Fig.11 In a specific embodiment, the optical fiber fixing seat 320 includes a seat body 321 and a driving pin 322 connected to the seat body 321, the driving pin 322 protrudes from the outer peripheral surface of the seat body 321, and the device base 310 is provided with a through groove 318 that penetrates the cavity wall of the active chamber 311, and the driving pin 322 passes through the through groove 318. The number of the through groove 318 can be one or more than two, and correspondingly, the number of the driving pin 322 can be one or more than two. Please refer to Figures 11 to 13 The through groove 318 may be a spiral groove arranged around the outer circumference of the device base 310; the spiral transmission structure includes a limit groove 332 arranged on the hole wall of the assembly hole, the limit groove 332 extends along the reciprocating movement direction of the laser transmission optical fiber 400, and the end of the transmission pin 322 is inserted into the limit groove 332 and can move in the limit groove 332. When installing the optical fiber fixing seat 320, the seat body 321 can be installed into the movable chamber 311 first, and then the transmission pin 322 passes through the through groove 318 and is connected to the seat body 321.

[0095] When the operating member 330 is rotated, the limit groove 332 can drive the optical fiber fixing seat 320 to rotate through the transmission pin 322, and the through groove 318 is a spiral groove, so the optical fiber fixing seat 320 can also be driven by the transmission pin 322 to move along the reciprocating movement direction of the laser transmission optical fiber 400 at the same time, so that the optical fiber fixing seat 320 rotates around its own axis while moving along the axial direction of the device base, that is, moves along the reciprocating movement direction of the laser transmission optical fiber 400, and the laser transmission optical fiber 400 can move synchronously with the optical fiber fixing seat 320 to control whether the laser transmission optical fiber 400 extends out of the second working channel and the extension amount.

[0096] In some embodiments, the outer circumferential surface of the optical fiber holder 320 may be provided with indicator scales 326 arranged along its axial direction. When the operator pushes the laser transmission optical fiber 400, the operator may judge the length of the laser transmission optical fiber 400 extending out of the distal end face of the head end holder 220 by the indicator scales 326 on the outer circumferential surface of the optical fiber holder 320, which helps the operator to operate accurately and avoid the end face of the laser transmission optical fiber 400 from poking the patient's tissue. There is at least one row of indicator scales 326 on the outer cylindrical surface of the optical fiber holder 320. When there are two or more rows of indicator scales 326, each row of indicator scales 326 may be evenly arranged along the circumference of the optical fiber holder 320.

[0097] The above structure realizes the telescopic drive of the laser transmission optical fiber 400 . However, the laser transmission optical fiber 400 will also rotate during the telescopic movement, which may cause the laser transmission optical fiber 400 to be damaged under the action of torque.

[0098] In order to avoid the reliability of the endoscope being affected by the rotation of the laser transmission optical fiber 400, please refer to Figure 15 to Figure 16 ,and Fig.11 and Fig.12 The difference of the embodiment shown is that, in this embodiment, the operating member 330 includes an operating body 333 and a spiral sleeve 334, the operating body 333 has a central hole 3331, and the spiral sleeve 334 is embedded in the central hole 3331; a rotation-stopping structure is provided between the hole wall of the central hole 3331 and the outer peripheral surface of the spiral sleeve 334. In addition, the inner cavity of the spiral sleeve 334 forms an assembly hole, and a spiral driving groove 335 is provided on the hole wall of the assembly hole. The driving groove 335 penetrates the wall of the spiral sleeve 334 in a direction perpendicular to the axis of the spiral sleeve 334, and the end of the driving pin 322 is inserted into the driving groove 335 and can move in the driving groove 335; at the same time, the through groove 318 on the device base 310 is a straight groove, and the straight groove extends along the reciprocating movement direction of the laser transmission optical fiber 400.

[0099] like Fig.15The anti-rotation structure between the hole wall of the center hole 3331 and the outer peripheral surface of the spiral sleeve 334 may include an anti-rotation groove 3341 arranged on the outer peripheral surface of the spiral sleeve 334, and an anti-rotation protrusion 3332 protruding from the inner wall of the center hole 3331, and the anti-rotation groove 3341 and the anti-rotation protrusion 3332 may both extend along the axial direction of the spiral sleeve 334. The operating member 330 is configured to include an operating body 333 and a spiral sleeve 334, so as to facilitate the processing of a spiral driving groove 335. Of course, in some other embodiments, when the processing conditions are met, the operating body 333 and the spiral sleeve 334 may also be an integrated structure; in addition, other forms of anti-rotation structures may also be used between the operating body 333 and the spiral sleeve 334, such as an adhesive fixing structure, a spline structure, a key structure, etc.

[0100] When the operating member 330 is rotated, the spiral sleeve 334 rotates synchronously, and the optical fiber fixing seat 320 can only move along the rotation axis of the operating member 330 by relying on the straight through groove 318 and the transmission pin 322. Therefore, the driving groove 335 on the spiral sleeve 334 will drive the optical fiber fixing seat 320 to move only along the reciprocating movement direction of the laser transmission optical fiber 400 through the transmission pin 322, and the laser transmission optical fiber 400 can move synchronously with the optical fiber fixing seat 320 to control whether the laser transmission optical fiber 400 extends out of the second working channel and the extension amount.

[0101] On the whole, the present invention pre-installs a laser transmission optical fiber 400 on the endoscope, and can be used in conjunction with the optical fiber driving device 300. The operator can conveniently and accurately control the extension and retraction of the laser transmission optical fiber 400, which is helpful to simplify the surgical operation process, improve surgical efficiency, reduce medical risks, and help improve the operator's user experience.

[0102] It should be noted that, in some embodiments, those skilled in the art should be aware that the spiral transmission structure can also be replaced by other structural forms. For example, a transmission pin can be provided on the operating member, and a spiral groove can be provided on the outer peripheral surface of the optical fiber fixing seat. The transmission pin is inserted into the spiral groove on the optical fiber fixing seat and can move in the spiral groove. In this case, the transmission pin can also be provided on the proximal side of the device base; in addition, the transmission pin and the spiral groove can also be replaced by an adaptive threaded structure.

[0103] Embodiments of the insertion member of the endoscope of the present invention:

[0104] The structure of the insertion component of the endoscope is the same as the structure of the insertion component 200 in the above-mentioned embodiment of the endoscope, and will not be repeated here.

[0105] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. An insertion member for an endoscope, characterized in that include: A tube body, used to be connected to an operating handle of the endoscope; A head end seat connected to the distal end of the tube body, wherein the head end seat is provided with a first through hole and a second through hole arranged in a proximal-distal direction; a first channel tube and a second channel tube, wherein the first channel tube and the second channel tube are arranged in the tube body; the first channel tube is communicated with the first through hole to form a first working channel, and the second channel tube is communicated with the second through hole to form a second working channel; A laser transmission optical fiber is installed in the second working channel, and the distal end of the laser transmission optical fiber is used to be exposed at the distal end opening of the second working channel to output laser light to the distal outer side of the second through hole; and an imaging element, wherein the imaging element is arranged on the head end seat and is used for photographing an object located outside the head end seat.

2. The insert component according to claim 1, characterized in that A sealing structure is provided between the outer peripheral surface of the laser transmission optical fiber and the inner wall of the second working channel.

3. The insert member according to claim 2, characterized in that The laser transmission optical fiber is movably arranged along the extension direction of the second working channel, and the sealing structure is a dynamic sealing structure.

4. The insert member according to claim 3, characterized in that The dynamic sealing structure is a sealing ring.

5. The insert member according to claim 4, characterized in that The second through hole is a stepped hole, including a distal hole section and a proximal hole section arranged in sequence from the distal end to the proximal end, the diameter of the proximal hole section is larger than that of the distal hole section, and an annular step is formed between the distal hole section and the proximal hole section; the second channel tube is inserted into the proximal hole section, and the sealing ring is arranged between the distal end face of the second channel tube and the annular step.

6. The insert component according to any one of claims 1 to 5, characterized in that The distal end of the laser transmission optical fiber is fixed in the second working channel.

7. The insert component according to any one of claims 1 to 5, characterized in that The laser transmission optical fiber includes an inner core and an outer sheath, wherein the inner core includes an extending section extending from a distal end of the outer sheath.

8. The insert component according to any one of claims 1 to 5, characterized in that The distal end face of the laser transmission optical fiber is a plane perpendicular to the extension direction of the laser transmission optical fiber.

9. The insert component according to any one of claims 1 to 5, characterized in that In a direction perpendicular to the proximal-distal direction of the head end seat, the head end seat has a first side and a second side, the imaging element is arranged on the first side of the head end seat, and the first through hole and the second through hole are arranged on the second side of the head end seat; the diameter of the first through hole is larger than that of the second through hole, and the first through hole is closer to the center of the head end seat than the second through hole.

10. An endoscope, characterized in that include: The insert member according to any one of claims 1 to 9; And an operating handle, wherein the operating handle is connected to the proximal end of the insertion component, the operating handle has a first port and a second port, the proximal end of the first channel tube is connected to the first port, the proximal end of the laser transmission optical fiber is connected to the second port, and the second port is used for connecting the laser transmission optical fiber to a laser device host, and is used to introduce laser into the laser transmission optical fiber.

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