JP6052557B2 - Integrated soft endoscope that can be adjusted in all directions - Google Patents

Description

The present invention relates to a medical device, and more particularly, to a guide mechanism for a soft sheath and an integrated soft endoscope that can be adjusted in all directions.

  In clinical medicine, a treatment using an endoscope is a medical treatment method that causes relatively little damage to a patient that is currently most commonly used. The conventional endoscopic treatment requires the cooperation of several doctors, and the medical treatment effect of the endoscope is highly dependent on the skills and experiences of the doctors. Examination of an endoscope that enters a patient's body requires a relatively long time, so that the demand for doctor's technology is further increased, and the stability and sensitivity of the endoscope apparatus are also increased. In order to prevent repeated angle adjustment and localization in a patient's body, a highly safe and highly efficient endoscope apparatus that satisfies the requirements of clinical diagnosis and treatment is strongly demanded. When performing an intervention on the human body with an endoscope, an operation error caused by fatigue caused by a long-time operation by a doctor may cause a relatively large pushing force on the endoscope lens and human tissue. . If this pushing force exceeds a certain threshold value, soft tissue breakage may occur, and medical accidents such as perforation of human tissue and peeling of natural openings may occur. At present, there are roughly two types of existing endoscope technologies, one is an angle slide block that performs position regulation, and the other is a traction device that includes a lock mechanism. Although the structure using the angle slide block is simple, the reliability of the angle position regulation is relatively poor. A traction device equipped with a locking mechanism has relatively good position regulation independence and reliability, but has a complicated structure, high relevance in assembly between parts, and high demand for bidirectionality. The degree of dependence of the mirror on other devices is relatively high. When operating, it is necessary to couple and adjust the entire endoscope, and the use efficiency of the endoscope is relatively low.

Before submitting this application, the Chinese Patent No. CN201010266551.4, discloses a "combined type 軟硬 of endoscope". The patent utilizes relative motion between the handle sleeve and the handle cover on the turning handle to achieve relative expansion and contraction and rotation between the outer tube and the inner tube. The catheter portion of the patent includes a rigid tube and a flexible sheath made of stainless steel and plastic, and the rigid tube fits outside the flexible sheath. The rigid tube and handle sleeve are fixed in thread form by connecting flanges. The flexible sheath passes through a through hole in the center of the handle sleeve, is connected to one joint of the pipe connector, and is fixed to the joint portion.

  In the operation process of surgery, the flexible and rigid sheaths of the endoscope are in direct contact with each other and perform relative motion. Since the material of the flexible sheath itself is soft and easily deformed, the flexible sheath easily bends in the process of constantly replacing the instrument in the flexible sheath, and the sensitivity of the instrument decreases with long-term use. The soft sheath of the endoscope is highly worn, and damage to the fiberscope or image and illumination sensor is likely to occur. In addition, if the tube is bent, the surgical operation becomes inconvenient and poses a potential danger to the safety of the operation.

  Furthermore, in the endoscope, a mechanism for realizing relative expansion and contraction and rotation between the outer tube and the inner tube has not been established so much, and the operation is not so convenient.

Chinese Patent No. CN201010266551.4

An object of the present invention is to provide a flexible sheath guide mechanism and an integrated flexible endoscope that can be adjusted in all directions in order to overcome the deficiencies in the background art. This is easy to operate, has high accuracy of repeated operations, has a characteristic that the flexible sheath is not easily deformed, and has high stability.

To achieve the above object, the guide mechanism of 軟硬 sheath for use in an endoscope according to the invention comprises a distributor, the guide sleeve, flexible sheath, a rigid sheath and the handle. Its features are as follows. One end of the guide sleeve is fixed to the outlet portion of the distributor and is arranged coaxially with the outlet of the distributor. Another end of the guide sleeve is inserted into the rigid sheath and the guide sleeve and rigid sheath are combined. The handle consists of a handle head and a handle sleeve which are combined with each other. The distributor is fixed in the handle head and the rigid sheath is fixed to the handle sleeve. The flexible sheath passes through the guide sleeve and the rigid sheath, and its end is fixed to the outlet portion of the distributor.

  Preferably, the distributor comprises a fixing part, provided with a main cavity into which the guide sleeve and the flexible sheath can be inserted at the outlet end of the fixing part. In the fixed part, four distribution cavities are provided at the other end opposite the main cavity. The outer ends of the four distribution cavities are located on the end face of the fixed part, and the inner ends of the four distribution cavities are collected at the inner end of the main cavity.

  Preferably, each center line of the four distribution cavities forms a depression angle of 7 ° to 13 ° with the center line of the fixed part.

  Preferably, a tightening screw is provided on a side surface of the main cavity of the distributor, and the flexible sheath positioned in the main cavity of the distributor is fixed by the tightening screw.

  Preferably, the guide sleeve is a stainless steel tube, which is welded together with the main cavity at the outlet end of the distributor.

  Preferably, three channels penetrating along the axial direction are provided in the soft sheath.

  Preferably, both the handle head and the handle sleeve have a cylindrical structure, are combined with each other, and are sleeve-connected together.

  Preferably, the front end of the rigid sheath and the handle sleeve are connected by a collet chuck.

Omnidirectional adjustable integrated 軟硬 of endoscope using a guide mechanism of the 軟硬 sheath described in the present invention, an angle adjusting mechanism for use in further bending of the flexible sheath of an endoscope, A direction changing localization mechanism used between the soft sheath and the hard sheath of the endoscope, and a soft sheath feeding mechanism used for the soft sheath of the endoscope to face the hard sheath.

  In the above plan, the angle adjusting mechanism includes an angle adjusting wire, a handle, a nut, and a screw, and the screw is attached to a stereotaxic hole of the handle. The nut is located in the position restricting groove of the handle and is combined with the screw. One of the position restricting grooves is located on the handle surface and has an opening shape, and a part of the outer surface of the nut is located at an opening portion of the position restricting groove of the handle. The angle adjustment wire is connected to a screw.

  Preferably, the screw and handle axes are parallel.

  Preferably, the screw and the angle adjusting wire are connected by a connecting component. The connection component is a columnar body, a thread is provided at one end of the connection component, a screw hole is provided in the screw, and the connection component and the screw are screw-connected. A connection hole is provided at another end of the connection component, and the angle adjustment wire is fixed to the connection hole.

  Preferably, the localization hole is positioned on two side surfaces opposed to each other in the axial direction in the position restricting groove.

  Preferably, a bearing is provided between the stereotaxic hole and the screw.

  Preferably, the width of the position restricting groove matches the width of the nut.

  In the above plan, the direction changing localization mechanism includes a handle head, a handle sleeve, an eccentric, a drive lever, and a rotation shaft, and a localization hole for setting the rotation shaft is provided in the handle head. An eccentric is connected to one end of the rotating shaft, and a drive lever is connected to the other end. The rotation shaft is disposed in the axial direction along the handle head, and an opening groove is provided along the circumferential direction on the surface of the handle head. The drive lever is located in the opening groove, the lower end of the drive lever is fixedly connected to the rotating shaft, and the eccentric and the rotating shaft are arranged eccentrically.

  Preferably, a position restricting groove is provided on the side surface of the end portion of the opening groove, and when the drive lever is positioned in the position restricting groove, the eccentric is tightened on the inner surface of the handle sleeve to be locked.

  Preferably, the surface of the eccentric is arcuate.

  In the above plan, the flexible sheath feeding mechanism includes a flexible sheath, a flexible sheath cap, and a rigid sheath. The flexible sheath cap has a tubular structure, and has two stepped surfaces whose diameters are not equal to each other on the outer surface, and the outer surface of the stepped surface having a larger diameter exhibits a streamline along the axial direction. The outer surface of the stepped surface having a smaller arc is a circular arc surface, has a linear shape along the axial direction, and can be combined with the inner hole of the rigid sheath. The end face with the larger diameter of the soft sheath cap is a slope, and a cover piece for fixing the wire is provided on the end face. The inner hole of the soft sheath cap is fitted to the outer surface of the soft sheath head and fixedly connected thereto, and the wire head in the soft sheath is fixedly connected to the cover piece. The hard sheath can be fitted to the outside of the soft sheath, and the outer end surface of the hard sheath can be combined with the stepped end surface of the soft sheath cap.

  Preferably, the step h between the two stepped surfaces in the flexible sheath cap and the thickness of the hard sheath matching the step h are the same.

  Preferably, the cover piece and the soft sheath cap have an integral structure, and the cover piece is located at the farthest portion of the inclined end surface.

  Preferably, the cover piece is located in a cross section of the flexible sheath cap at a portion corresponding only to the turning control channel in the flexible sheath.

To achieve the object of the present invention, the present invention is the distributor, the guide sleeve, flexible sheath, including rigid sheath and the handle further provides a guide mechanism 軟硬 sheath for use in an endoscope. Its features are as follows. Furthermore, a guide sleeve is included, and one end of the guide sleeve is fixed to the main cavity portion of the distributor and is arranged coaxially with the main cavity of the distributor. Another end of the guide sleeve is inserted into the rigid sheath, and the guide sleeve is combined with the rigid sheath. The distributor is fixed to a handle, the flexible sheath passes through a guide sleeve and a rigid sheath, and its end is fixed to the main cavity portion of the distributor. A sheath ring convenient for grasping by hand is fixed to the outer surface of the rigid sheath.

  Preferably, the distributor is a part of the front part of the handle and a circular main cavity is provided at the front end of the distributor. The guide sleeve is located in the main cavity, and a gap is provided between the outer surface of the guide sleeve and the inner surface of the main cavity. The rear end of the rigid sheath is fitted outside the guide sleeve and inserted into the gap. In the distributor, three distribution cavities are provided at another end opposite to the main cavity, and the inner ends of the three distribution cavities are collected at the inner end of the main cavity.

  Preferably, the three dispensing cavities are an instrument catheter, a stainless capillary, and an image and illumination sensor catheter, respectively, and one chamber is provided at the root of the main cavity in the distributor. The instrument catheter, stainless capillary, image and illumination sensor catheter and guide sleeve, and the inner end of the flexible sheath are all collected in the chamber and coagulated together with a curable resin.

  Preferably, each center line of the three distribution cavities forms a depression angle of 7 ° to 13 ° with the center line of the main cavity.

  Preferably, three channels are provided through the flexible sheath along its axial direction, each communicating with the three distribution cavities of the distributor.

Omnidirectional adjustable integrated 軟硬 of endoscope using a guide mechanism of the 軟硬 sheath described in the present invention, an angle adjusting mechanism for use in further bending of the flexible sheath of an endoscope, It includes a direction changing localization mechanism used between the endoscope's soft sheath and the rigid sheath, and a feeding mechanism used for the endoscope's soft sheath to be opposed to the rigid sheath.

  In the above proposal, the direction changing and positioning mechanism includes an elastic chuck combined with a screw thread at the front end of the main cavity of the distributor, and the front end of the main cavity of the distributor is a chuck capable of elastic contraction. By tightening the elastic chuck, the front end of the main cavity can be contracted, and the rigid sheath can be tightened, and the space between the rigid sheath and the distributor is fixed.

  In the above plan, the angle adjusting mechanism includes an angle adjusting wire, a handle, a nut, and a screw, and the screw is attached to a stereotaxic hole of the handle. The nut is located in the position restricting groove of the handle and is combined with the screw. One of the position restricting grooves is located on the handle surface and has an opening shape, and a part of the outer surface of the nut is located at an opening portion of the position restricting groove of the handle. The angle adjustment wire is connected to a screw.

  Preferably, the screw and handle axes are parallel.

  Preferably, the localization hole is positioned on two side surfaces opposed to each other in the axial direction in the position restricting groove.

  Preferably, a bearing is provided between the stereotaxic hole and the screw.

  Preferably, the width of the position restricting groove matches the width of the nut.

  In the above plan, the flexible sheath feeding mechanism includes a flexible sheath, a flexible sheath cap, and a rigid sheath. The flexible sheath cap has a tubular structure, and has two stepped surfaces whose diameters are not equal to each other on the outer surface, and the outer surface of the stepped surface having a larger diameter exhibits a streamline along the axial direction. The outer surface of the stepped surface having a smaller arc is a circular arc surface, has a linear shape along the axial direction, and can be combined with the inner hole of the rigid sheath. The end face with the larger diameter of the soft sheath cap is a slope, and a cover piece for fixing the wire is provided on the end face. The inner hole of the soft sheath cap is fitted to the outer surface of the soft sheath head and fixedly connected thereto, and the wire head in the soft sheath is fixedly connected to the cover piece. The hard sheath can be fitted to the outside of the soft sheath, and the outer end surface of the hard sheath can be combined with the stepped end surface of the soft sheath cap.

  Preferably, the step h between the two stepped surfaces in the flexible sheath cap and the thickness of the hard sheath matching the step h are the same.

  Preferably, the cover piece and the soft sheath cap have an integral structure, and the cover piece is located at the farthest portion of the inclined end surface.

  Preferably, the cover piece is located in a cross section of the flexible sheath cap at a portion corresponding only to the turning control channel in the flexible sheath.

The integrated flexible endoscope described in the present invention that can be adjusted in all directions employs a hard material tube as a guide sleeve in the front portion thereof. Preferably, it is a stainless steel tube, and the end of the guide sleeve is welded to the distributor in the endoscope. The guide sleeve made of stainless steel has a fixing, guiding, and stereotaxic action. In the surgical operation, the direction change wire is pulled and pulled back, and the entire flexible sheath is moved and changed direction. When released, the steel properties of the guide sleeve allow the entire soft sheath to quickly return to its original position under the constraints of the guide sleeve. Compared to existing technology, the present invention is not only easy to operate, but also allows an effective connection to be formed between the inner soft sheath and the outer hard sheath. Any change in direction or expansion / contraction of the flexible sheath is limited by the stainless guide sleeve within the guide mechanism of the inner rigid sheath, and the inner flexible sheath is fixed in the track. The flexible sheath does not pull back, does not twist, does not deform, and can be operated repeatedly, thereby ensuring surgical safety. The clinical significance of this is that there is a direct connection between the inner and outer sheaths, so that the flexible sheath is curved, deformed, and reversible, which is caused by repeated operations of the flexible sheath during the surgical operation. The ability to solve many technical bottlenecks makes it safer and more sensitive to use in the clinic.

  The angle adjustment mechanism described in the present invention has the features that the position regulation is accurate, the structure is simple, the processing and assembly are convenient, the independence of the angle adjustment is strong, and the adjustment and fixing are convenient.

  The direction changing and positioning mechanism described in the present invention has the features that the position regulation is accurate, the structure is simple, the processing and assembly are convenient, the position regulation is highly independent, and the adjustment and fixing are convenient.

  The flexible sheath feeding mechanism described in the present invention is simple in structure and easy to manufacture, and the outer surface of the flexible sheath cap has a smooth design. As a result, in the process of repeatedly operating the endoscope, the contact surface with the human body tissue is not smooth and sharp, and the force of the puncture by the doctor is too great, so that the human body tissue is not damaged and is constant with respect to the human body tissue of the patient. A degree of protective action can be shown. When the endoscope's soft sheath and hard sheath are used in combination with each other, the soft sheath cap can act to fix the connection between the soft sheath and the hard sheath. Thus, in the course of surgery, the flexible sheath does not pull back into the rigid sheath tube as the flexible sheath twists and curves, and the operation is quicker and the conformity of the flexible sheath and the rigid sheath is higher.

  In summary, the present invention has the features that the guide is accurate, the localization is reliable, the structure is simple, the processing assembly is convenient, and the adjustment and fixing are convenient.

FIG. 1 is a schematic structural view of a guide mechanism for a soft sheath described in the first embodiment of the present invention. FIG. 2 is a schematic diagram of the structure of the distributor in FIG. FIG. 3 is a schematic cross-sectional view of the distribution cavity of the distributor in part C of FIG. 4 is a schematic cross-sectional view of the main cavity of the distributor in FIG. FIG. 5 is a partially enlarged view of the connection portion of the distributor and the guide sleeve in part A in FIG. FIG. 6 is a partially enlarged view of a connection portion of the guide sleeve and the rigid sheath in a portion B in FIG. FIG. 7 is a schematic diagram of the structure of the angle adjustment mechanism of the integrated soft endoscope that can be adjusted in all directions according to the second embodiment. FIG. 8 is a schematic diagram of the structure of the direction changing localization mechanism (300) of the integrated soft endoscope that can be adjusted in all directions according to the second embodiment. FIG. 9 is a schematic view of the opening groove and the position regulating groove in FIG. FIG. 10 is a structural schematic diagram in which the hard sheath and the soft sheath cap of the flexible sheath feeding mechanism described in the second and fourth embodiments are separated. FIG. 11 is a schematic diagram of a structure in which the hard sheath and the soft sheath cap of the flexible sheath feeding mechanism described in the second and fourth embodiments are combined. FIG. 12 is a schematic structural diagram of the guide mechanism for the soft sheath described in the third embodiment of the present invention. FIG. 13 is a partially enlarged view of a portion D in FIG. FIG. 14 is a partially enlarged view of a portion E in FIG. FIG. 15 is a schematic structural view of an integrated soft endoscope that can be adjusted in all directions described in the fourth embodiment. FIG. 16 is a schematic structural diagram of the angle adjustment mechanism described in the fourth embodiment. FIG. 17 is an external view of the fourth embodiment.

  In the following, the implementation status of the present invention will be described in detail with reference to the accompanying drawings, but these are not intended to limit the present invention and are merely examples.

Example 1
Please refer to FIGS. This embodiment is 軟硬 sheath guide mechanism used in an endoscope, including a distributor 101, guide sleeve 102, the flexible sheath 103, rigid sheath 104 and handle 105. One end of the guide sleeve 102 is fixed to the main cavity of the outlet portion of the distributor, and is arranged coaxially with the main cavity of the distributor 101. Another end of the guide sleeve 102 is inserted into the rigid sheath 104, and axial movement and circumferential rotation can be performed between the guide sleeve 102 and the rigid sheath 104. The handle 105 includes a handle head 106 and a handle sleeve 107 that are combined with each other. The distributor 101 is fixed to the handle head 106, and the rigid sheath 104 is fixed to the handle sleeve 107. The flexible sheath 103 passes through the guide sleeve 102 and the rigid sheath 104, and its end is fixed to the main cavity of the outlet portion of the distributor 101. The distributor 101 includes a fixed part 108, and is provided with a main cavity into which the guide sleeve 102 and the flexible sheath 103 can be inserted at the outlet end of the fixed part. Two distribution cavities 109 are provided. The outer ends of the four distribution cavities 109 are located on the end face of the fixed part 108, and the inner ends of the four distribution cavities 109 are collected at the inner end of the main cavity. The center lines of the four distribution cavities 109 form a depression angle of 7 ° to 13 ° with the center line of the main cavity, and are collected at the mouth portion of the flexible sheath 103 at the inner end of the main cavity. It is done. Both the handle head 106 and the handle sleeve 107 have a cylindrical structure and are connected together by a sleeve. A tightening screw 110 is provided on the side of the main cavity of the outlet portion of the distributor 101, and the flexible sheath 103 located in the main cavity of the outlet portion of the distributor 101 is fixed by the tightening screw 110. The guide sleeve 102 is a stainless steel tube that is welded together with the outlet end of the distributor 101. The rigid sheath 104 and the handle sleeve 107 are connected by a collet chuck 111.

  As a preferred embodiment of the present invention, three channels are provided through the flexible sheath 103 along its axial direction (see FIG. 4). The three channels are divided into a direction change control channel, an image and illumination sensor channel, and an operation channel, and the operation channel has a larger cross section than the direction change control channel or the image and illumination sensor channel. The cross section of the operating channel is a deformed cross section formed by connecting arcs and curves. The cross sections of the turning channel, the turning control channel, the image and the illumination sensor channel are all circular. The cross sections of the three channels are distributed in the circumferential direction along the cross section of the soft sheath.

The operation process of the guide mechanism for the soft sheath described in the present invention is as follows. Each of the four distribution cavities 109 is connected to an instrument channel, an irrigation channel, an image and illumination sensor channel and a turn control channel of the endoscope. Endoscopic instruments, irrigation tubes, images and illumination sensors and wires enter the distributor 101 through their respective distribution channels 109. Another end of the four distribution cavities 109 in the distributor 101 is collected and enters a soft sheath 103 located in the tube of the guide sleeve 102 in the distributor 101. The flexible sheath 103 extends along the axial direction of the guide sleeve 102 under the restriction of the guide sleeve 102 and is connected to the rigid sheath 104. Since the guide sleeve 102 is a rigid tube, the guide sleeve 102 and the rigid sheath 104 are sleeve-connected to prevent direct contact between the flexible sheath 103 and the rigid sheath 104. The flexible sheath 103 is sleeve-connected in the guide sleeve and can perform circumferential rotation and axial movement. In the actual operation process, the flexible sheath can satisfy the demands of surgical operation and can complete operations such as stretching, pulling back and rotating. Furthermore, due to the characteristics of the hard material of the guide sleeve, it is possible to restrict the activity in the track in which the soft sheath is limited, and there is no occurrence of a phenomenon such as bending or twisting of the soft sheath. In the surgical process, it is convenient to use, the localization is accurate, the reproducibility is high, and the safety of the operation is guaranteed.

Example 2
See Figures 7-11. The present embodiment relates to an integrated soft endoscope that can be adjusted in all directions using the guide mechanism of the soft sheath described in the first embodiment. This is in addition to including the guide mechanism of 軟硬 sheath described in Example 1, further the angle adjustment mechanism 200 for use in bending of the flexible sheath 103 of the endoscope, flexible sheath 103 and the rigid sheath of an endoscope And a direction changing and positioning mechanism 300 used between the endoscope 104 and a feeding mechanism 400 used for the flexible sheath 103 of the endoscope to face the rigid sheath 104.

FIG. 7 shows an angle adjustment mechanism 200 used in an integrated soft endoscope that can be adjusted in all directions. The angle adjustment mechanism 200 mainly includes an angle adjustment wire 202, a handle 105, a nut 204, and a screw 206. The screw 206 is attached to the stereotaxic hole 205 of the handle 105, and the nut 204 is positioned in the position restricting groove 203 of the handle 105 and is combined with the screw 206. One of the position restricting grooves 203 is located on the handle surface and has an opening shape. A part of the outer surface of the nut 204 is located at the opening portion of the position restricting groove 203 of the handle, and the angle adjusting wire 202 is connected to the screw 206. . The axes of the screw 206 and the handle 105 are parallel. A connection component 207 connects between the screw 206 and the angle adjustment wire 202. The connection component 207 is a columnar body, a screw thread is provided at one end of the connection component 207, a screw hole 208 is provided in the screw 206, and the connection component 207 and the screw 206 are screw-connected. A connection hole 209 is provided at another end of the connection component 207, and the angle adjustment wire 202 is fixed to the connection hole 209. The stereotaxic holes 205 are positioned on two side surfaces facing each other in the axial direction in the position restricting groove 203. A bearing is provided between the stereotaxic hole 205 and the screw 206. The width of the position restricting groove 203 matches the width of the nut 204.

  This angle adjustment mechanism employs a nut 204 and a screw 206 to solve the shortage of existing technology. By combining the nut 204 and the screw 206 with each other and moving the nut 204, the screw 206 is moved back and forth, and the angle adjusting wire 202 connected to the screw 206 is controlled to adjust the angle of the endoscope. By designing the screw thread that combines the nut 204 and the screw 206 to a screw thread having a self-locking function, the screw 206 can be controlled only by the nut 204 in the adjustment process, and further, the angle connected to the screw 206 The adjustment wire 202 is controlled. The control of the nut 204 can be conducted to the angle adjusting wire 202 from the outside, and the torsional torque becomes excessively large when the angle adjusting wire 202 is repeatedly used, and there is no reaction with the screw 206. If the screw 206 is forcibly pulled back, the angle adjustment mechanism of the endoscope will not work and a phenomenon will occur in which the angle adjustment wire 202 idles. The screw 206 in the present invention is an indispensable and most important part. When assembling, first, the nut 204 and the screw 206 are assembled into members, and then the members are inserted into the handle 105 of the endoscope by wires and fixed.

  The angle adjustment of the angle adjustment mechanism 200 has good reliability, has a simple structure, and is very convenient to assemble and adjust. The advantage is that the localization is accurate and the localization is stable.

FIGS. 8 and 9 show a direction changing localization mechanism 300 used for an integrated soft endoscope that can be adjusted in all directions, mainly a handle head 106, a handle sleeve 107, an eccentric 303, and a drive. A lever 304 and a rotation shaft 305 are included. A localization hole 306 for setting the rotating shaft 305 is provided in the handle head 106, one end of the rotating shaft 305 is connected to the eccentric 303, and the other end is connected to the drive lever 304. The rotation shaft 305 is disposed in the axial direction along the handle head 106, and an opening groove 307 is provided on the surface of the handle head 106 along the circumferential direction. The drive lever 304 is located in the opening groove 307, the lower end of the drive lever 304 is fixedly connected to the rotary shaft 305, and the eccentric 303 and the rotary shaft 305 are arranged eccentrically. When the position restricting groove 308 is provided on the side surface of the end portion of the opening groove 307 and the drive lever 304 is positioned in the position restricting groove 308, the eccentric 303 is fastened to the inner surface of the handle sleeve 107 and is locked. The surface of the eccentric 303 has an arc shape. The lower end of the drive lever 304 is fixedly connected to the rotary shaft 305 in the handle head 106, and the upper end of the drive lever 304 is disposed in the opening groove 307 of the handle head 106.

  When the direction changing localization mechanism 300 operates, the operator controls the upper end of the drive lever 304 to slide left and right within the opening groove 307. When the drive lever 304 slides in the opening groove 307, the eccentric 303 is rotated by the rotation shaft 305. When the eccentric 303 is rotated by moving the drive lever 304 to one end, the friction surface of the eccentric 303 rotates from the lower side to the upper side and comes into contact with the friction surface in the handle head 106 of the endoscope. The friction force between the eccentric 303 and the inner surface of the handle head 106 is increased, and the direction change orientation is realized. In the actual operation process of the endoscope, the handle head 106 and the handle sleeve 107 are used in combination. After diagnosing the lesion, the doctor needs to accurately position the endoscope with respect to the lesion and further aim for further treatment based on the diagnosed lesion. At this time, as long as the drive lever 304 of the present invention is moved, the drive lever 304 is slid in the opening groove 307 on the outer surface of the handle head 106, and the rotating shaft 305 is rotated in the circumferential direction. Furthermore, the eccentric 303 is rotated in the circumferential direction, and the friction surface of the eccentric 303 is rotated from the lower side to the upper side. The friction surface of the eccentric 303 and the inner surface of the handle head 106 come into contact with each other to increase the friction force between them, and the position between the handle head 106 and the handle sleeve 107 is restricted and fixed.

  This direction change localization mechanism diagnoses the inside of the patient's body with the flexible sheath of the endoscope, and performs the localization after completing the rotation operation.

Shown in FIG. 10 and 11, a soft sheath feed mechanism 400 for use in an adjustable integrated 軟硬 of endoscope in all directions, including a flexible sheath 103, flexible sheath cap 402 and rigid sheath 104. The soft sheath cap 402 is fixed around the soft sheath mouth portion, and the soft sheath cap 402 has a circular tubular structure. Two step surfaces having unequal diameters are provided on the outer surface, and the outer surface of the step surface 406 having a larger diameter is streamlined along the axial direction, and the outer surface of the step surface 407 having a smaller diameter. Is an arcuate surface, has a linear shape along the axial direction, and can be combined with the inner hole of the rigid sheath 104. The outer end surface 404 having a larger diameter of the flexible sheath cap 402 is an inclined surface, and a cover piece 405 for fixing a wire is provided on the end surface 404. The inner hole of the soft sheath cap 402 is fitted to the outer periphery of the head of the soft sheath 103 and fixedly connected thereto. The wire head in the flexible sheath is fixedly connected to the cover piece 405, and the outer end surface of the rigid sheath 104 can be combined with the stepped end surface of the flexible sheath cap 402. The step h between the two stepped surfaces in the flexible sheath cap and the thickness of the rigid sheath 104 matching the step h are the same. The cover piece 405 and the soft sheath cap 402 have an integral structure, and the cover piece 405 is located at the farthest portion of the inclined end surface 404. The cover piece 405 is located at a portion corresponding to only the wire channel in the soft sheath 103 in the cross section of the soft sheath cap 402. When the rigid sheath 104 and the flexible sheath cap 402 are combined, the outer diameter of the rigid sheath and the diameter of the small end of the stepped surface 406 where the diameter of the flexible sheath cap 402 is larger are the same.

  This embodiment further provides a flexible sheath for an endoscope. A soft sheath cap 402 is provided at the head of the soft sheath 103, and the head of the soft sheath 103 is inserted into the hole of the soft sheath cap 402.

  The soft sheath cap 402 of this embodiment is fitted to the soft sheath 103 and combined with the soft sheath mouth. When the endoscope enters deep inside the human body, the soft sheath cap 402 is not detached from the soft sheath mouth portion by the cover piece 405 of the soft sheath cap 402, and is integrated with the soft sheath cap 402. The smooth outer surface of the soft sheath cap 402 does not easily stab human tissue in the process of inserting the soft sheath head, and increases the safety of using the endoscope in the surgical process. When the endoscope is rotated and retracted, the thickness of the flexible sheath cap 402 is larger than the gap between the flexible sheath 103 and the rigid sheath 104. Therefore, when the flexible sheath is pulled back, the flexible sheath cap 402 is pulled back into the rigid sheath 403. There is nothing. Its clinical significance is currently capable of solving many technical problems caused by the lack of a soft sheath cap in the soft sheath. For example, when the soft sheath moves forward along the natural opening of the human body or performs a puncture during a surgical process, the hardness of the puncture is low due to the relatively soft nature of the material of the soft sheath. Sufficient and relatively difficult to operate and diagnose. When the soft sheath is pulled back, if the soft sheath is easily pulled back to the inner surface of the hard sheath, the interlocking between the soft sheath and the hard sheath is weakened and easily separated in the surgical process.

Example 3
Please refer to FIG. The present embodiment relates to a guide mechanism for a soft sheath used in another endoscope. This includes a distributor 101, a guide sleeve 102, a soft sheath 103, a rigid sheath 104 and a handle 105. Further, a guide sleeve 102 is included, and one end of the guide sleeve 102 is fixed to the main cavity portion of the distributor 101 and is arranged coaxially with the main cavity of the distributor 101. Another end of the guide sleeve 102 is inserted into the rigid sheath 104, and the guide sleeve 102 is combined with the flexible sheath 104.

  The distributor 101 described above is a part of the front portion of the handle and is fixed to the handle 105. The main cavity in the distributor 101 has a circular cross section and is installed at the front end of the distributor 101. The guide sleeve 102 is located in the main cavity, and a gap is provided between the outer surface of the guide sleeve 102 and the inner surface of the main cavity. The rear end of the rigid sheath 104 is fitted outside the guide sleeve 102 and inserted into the gap. Three other distribution cavities 109 are provided at another end opposite the main cavity of the distributor 101, the three distribution cavities 109 being instrument catheters, stainless capillaries, and image and illumination sensor catheters, respectively. One chamber is provided at the base of the main cavity in the distributor 101, and the instrument catheter, the stainless capillary, the image and illumination sensor catheter, the guide sleeve 102, and the inner end of the flexible sheath 103 are all collected in the chamber. And solidified together with the cured resin 113.

  Each center line of the three distribution cavities 103 forms a depression angle of 7 ° to 13 ° with the center line of the main cavity.

  The flexible sheath 103 passes through the guide sleeve 102 and the rigid sheath 104, and its end is fixed to the main cavity portion of the distributor 101. A sheath ring 112 that is convenient to grip is fixed to the outer surface of the rigid sheath 104.

  Three channels extending through the flexible sheath 103 along the axial direction thereof are provided, and the three channels are instrument catheters, stainless capillaries and image and illumination sensors in the three distribution cavities 109 of the distributor 101, respectively. Communicate with the catheter.

  A sheath ring 112 that is convenient to grip is fixed to the outer surface of the rigid sheath 104.

Example 4
Please refer to FIGS. The present embodiment relates to an integrated soft endoscope that can be adjusted in all directions using the guide mechanism of the soft sheath described in the third embodiment. This is in addition to including the guide mechanism of 軟硬 sheath described in Example 3, further the angle adjustment mechanism 200 for use in bending of the flexible sheath 103 of the endoscope, flexible sheath 103 and the rigid sheath of an endoscope 104 includes a direction changing localization mechanism 300 used during 104 and a feeding mechanism 400 used for the flexible sheath 103 of the endoscope to oppose the rigid sheath.

  The structure and operation principle of the angle adjustment mechanism 200 of this embodiment and the embodiment 2 are basically the same, and the slight difference is that the direction change wire of this embodiment passes through the central through hole of the hollow screw 206. It is fixed to the outer end of the screw 206.

  The feed mechanism 400 of this embodiment is completely the same as that of the second embodiment, and the drawing is also the same. Here, the drawing of the feed mechanism 400 of this embodiment is omitted.

  The fundamental difference between the present embodiment and the second embodiment is the direction change localization mechanism. The direction changing localization mechanism 300 described in the present embodiment includes an elastic chuck 111 combined with a screw thread at the front end of the main cavity of the distributor 101, and the front end of the main cavity of the distributor 101 can be elastically contracted. By tightening the elastic chuck 111, the front end of the main cavity can be contracted, and the rigid sheath 104 can be tightened, and the rigid sheath 104 and the distributor 101 are fixed.

  The portions of the third and fourth embodiments that are different from the appearance of the first and second embodiments are that the handle 105 of the third and fourth embodiments is integrated, and the handles of the first and second embodiments are separated from the handle head 106 and the handle sleeve 107. Different from becoming. However, in the third and fourth embodiments, one sheath ring 112 fixed to the outer surface of the rigid sheath 104 is added, and the sheath ring 112 is functionally viewed from the handle sleeve 107 of the first and second embodiments. It corresponds to.

  In addition, the distributors of the third and fourth embodiments are different from the first and second embodiments in appearance. The distributors of Examples 3 and 4 are fixed to the front end of the handle and are integrated with the handle 105. Although the distributors 101 of the first and second embodiments are fixed in the handle head 106, they are not substantially the same. This is because the handle 105 of the third and fourth embodiments is functionally equivalent to the handle head 106 of the first and second embodiments.

  The operation principle of the direction changing localization mechanism described in the third and fourth embodiments is as follows. The handle 105 is grasped with a hand, the sheath ring 112 fixed to the outer surface of the rigid sheath 104 is grasped with another hand, and rotation and expansion / contraction are performed. A relative rotation angle between the rigid sheath and the flexible sheath and an axial expansion / contraction distance Can be adjusted conveniently. When adjusted to a predetermined position, the elastic chuck 111 of the direction changing and positioning mechanism can be tightened to fix the rigid sheath 104 and the distributor 101, whereby the relative position between the rigid sheath and the flexible sheath is increased. Locked.

  Other members and connection structures related to the endoscope are all existing technologies, and are not specifically described here.

Claims (33)

One- piece adjustable in all directions with a flexible sheath guide mechanism, including a distributor (101), a guide sleeve (102), a flexible sheath (103), a rigid sheath (104) and a handle (105) A flexible endoscope,
In the guide mechanism of the soft sheath, one end of the guide sleeve (102) is fixed to the outlet portion of the distributor (101) and is arranged coaxially with the outlet of the distributor (101). Another end is inserted into the rigid sheath (104), the guide sleeve (102) and the rigid sheath (104) are combined, and the handle (105) is combined with the handle head (106) and the handle sleeve (107). The distributor (101) is fixed in the handle head (106), the rigid sheath (104) is fixed to the handle sleeve (107), and the flexible sheath (103) is fixed to the guide sleeve (102) and the rigid sheath ( 104) and its end is fixed to the outlet part of the distributor (101),
The integrated flexible endoscope that can be adjusted in all directions includes an angle adjusting mechanism (200) used for bending the flexible sheath (103), and the flexible sheath (103) and the rigid sheath (104). and turning localization mechanism used (300), flexible sheath feed mechanism (400) used to soft sheath (103) relative to the rigid sheath (104) and only contains,
The direction changing and positioning mechanism (300) includes a handle head (106), a handle sleeve (107), an eccentric (303), a drive lever (304), and a rotation shaft (305), and the rotation shaft in the handle head (106). A stereotaxic hole (306) for mounting (305) is provided, an eccentric (303) is connected to one end of the rotating shaft (305), a drive lever (304) is connected to the other end, and the rotating shaft (305) is Axially disposed along the handle head (106), an opening groove (307) is provided along the circumferential direction on the surface of the handle head (106), and the drive lever (304) is placed in the opening groove (307). position, and the lower end of the driving lever (304) is fixedly connected with the rotary shaft (305), eccentric (303) and the rotating shaft (305) is characterized in that it is eccentrically disposed, adjustable in all directions軟硬 of endoscope integrated. One- piece adjustable in all directions with a flexible sheath guide mechanism, including a distributor (101), a guide sleeve (102), a flexible sheath (103), a rigid sheath (104) and a handle (105) A flexible endoscope,
In the guide mechanism of the soft sheath, one end of the guide sleeve (102) is fixed to the outlet portion of the distributor (101) and is arranged coaxially with the outlet of the distributor (101). Another end is inserted into the rigid sheath (104), the guide sleeve (102) and the rigid sheath (104) are combined, and the handle (105) is combined with the handle head (106) and the handle sleeve (107). The distributor (101) is fixed in the handle head (106), the rigid sheath (104) is fixed to the handle sleeve (107), and the flexible sheath (103) is fixed to the guide sleeve (102) and the rigid sheath ( 104) and its end is fixed to the outlet part of the distributor (101),
The integrated flexible endoscope that can be adjusted in all directions includes an angle adjusting mechanism (200) used for bending the flexible sheath (103), and the flexible sheath (103) and the rigid sheath (104). A turning orientation mechanism (300) used, and a flexible sheath feed mechanism (400) used for the flexible sheath (103) to oppose the rigid sheath (104);
The flexible sheath feeding mechanism (400) includes a flexible sheath cap (402), the flexible sheath cap (402) has a tubular structure, and two stepped surfaces having unequal diameters are provided on the outer surface thereof. The outer surface of the stepped surface (406) having a larger diameter is streamlined along the axial direction, the outer surface of the stepped surface (407) having a smaller diameter is an arc surface, and has a linear shape along the axial direction. The end face (404) having a larger diameter of the flexible sheath cap (402) is a slope, and can be combined with the inner hole of the hard sheath (104), and the cover piece for fixing the wire to the end face (404). (405) is provided, and the inner hole of the soft sheath cap (402) is fitted to the outer surface of the head of the soft sheath (103) and fixedly connected thereto, and the wire head in the soft sheath (103) is covered. (405) fixedly connected, the rigid sheath (104) can be fitted to the outside of the flexible sheath (103), and the outer end surface of the rigid sheath (104) can be combined with the stepped end surface of the flexible sheath cap (402). An integrated flexible endoscope that can be adjusted in all directions. The angle adjusting mechanism (200) includes an angle adjusting wire (202), a handle (105), a nut (204), and a screw (206), and the screw (206) is attached to a stereotaxic hole (205) of the handle (105). The nut (204) is positioned in the position restricting groove (203) of the handle (105) and combined with the screw (206), and one of the position restricting grooves (203) is positioned on the surface of the handle (105) and opened. A portion of the outer surface of the nut (204) is positioned at the opening of the position restricting groove (203) of the handle (105), and the angle adjusting wire (202) is connected to the screw (206). The integrated soft endoscope that can be adjusted in all directions according to claim 1 or 2 . The integrated flexible endoscope according to claim 3 , characterized in that the axes of the screw (206) and the handle (105) are parallel. The screw (206) and the angle adjusting wire (202) are connected by a connecting component (207), the connecting component (207) is a columnar body, and a screw thread is provided at one end of the connecting component (207). A screw hole (208) is provided in (206), the connection component (207) and the screw (206) are screw-connected, and a connection hole (209) is provided at the other end of the connection component (207). The fixed-type endoscope which can be adjusted in all directions according to claim 3 , characterized in that is fixed to the connection hole (209). 4. The integrated soft adjustable to all directions according to claim 3 , wherein the localization holes (205) are respectively positioned on two side surfaces facing in the axial direction in the position restricting groove (203). Rigid endoscope. The integrated flexible endoscope according to claim 3 , wherein a bearing is provided between the stereotaxic hole (205) and the screw (206). The integral-type flexible endoscope according to claim 3 , wherein a width of the position restricting groove (203) matches a width of the nut (204). When the position restricting groove (308) is provided on the side surface of the end of the opening groove (307), and the drive lever (304) is positioned in the position restricting groove (308), the eccentric (303) is disposed on the handle sleeve (107). ) fastened to the inner surface of, characterized in that in the locked state, adjustable integrated軟硬of endoscope in all directions according to claim 1. 2. The integrated flexible endoscope according to claim 1 , wherein the surface of the eccentric (303) has an arc shape. 3. The omnidirectional according to claim 2 , characterized in that the thickness h of the stepped h between the two stepped surfaces in the flexible sheath cap (402) and the thickness of the hard sheath (104) matched therewith are the same. Adjustable integrated soft endoscope. The cover piece (405) and soft sheath cap (402) is an integral structure, the cover piece (405) is being located farthest part of the inclined end face (404) of claim 2 Integrated soft endoscope that can be adjusted in all directions. The cover piece (405) is, in transverse cross-section of the flexible sheath cap (402), characterized in that located only parts corresponding to turning control channels in soft sheath (103) of claim 2 Integrated soft endoscope that can be adjusted in all directions. The distributor (101) includes a fixed part (108), and a main cavity is provided at the outlet end of the fixed part into which a guide sleeve (102) and a flexible sheath (103) can be inserted, and in the fixed part (108) Four distribution cavities (109) are provided at another end opposite the main cavity, and the outer ends of the four distribution cavities (109) are located at the end face of the fixed part (108), and the four distribution cavities (109) The integrated flexible endoscope according to any one of claims 1 to 13 , characterized in that the inner ends of 109) are collected at the inner end of the main cavity . Each center line of the four distribution cavity (109), characterized in that to form an included angle of each 7 ° to 13 ° between the center line of the fixed part (10 8), according to claim 14 An integrated soft endoscope that can be adjusted in all directions. A tightening screw (110) is provided on a side surface of the main cavity of the distributor (101), and a soft sheath (103) positioned in the main cavity of the distributor (101) is fixed by the tightening screw (110). 15. The integrated flexible endoscope according to claim 14 , which is adjustable in all directions. 14. The entire guide sleeve according to claim 1, characterized in that the guide sleeve (102) is a stainless steel tube, which is welded together with the main cavity at the outlet end of the distributor (101). Integrated soft endoscope with adjustable orientation. The unidirectionally adjustable one according to any one of claims 1 to 13 , characterized in that the flexible sheath (103) is provided with three channels penetrating along its axial direction. Body type soft endoscope. Said handle head (106) and the handle sleeve (107) is either a cylindrical structure are combined with each other, characterized in that it is sleeve connected together, according to any one of claims 1 to 13 An integrated soft endoscope that can be adjusted in all directions. The omnidirectional according to any one of claims 1 to 13 , characterized in that the front end of the rigid sheath (104) and the handle sleeve (107) are connected by a collet chuck (111). Adjustable integrated soft endoscope. An all-in-one adjustable soft mechanism with a flexible sheath guide mechanism including a distributor (101), a guide sleeve (102), a flexible sheath (103), a rigid sheath (104) and a handle (105). A rigid endoscope,
In the guide mechanism of the soft sheath, one end of the guide sleeve (102) is fixed to the main cavity portion of the distributor (101), and is arranged coaxially with the main cavity of the distributor (101). ) Is inserted into the rigid sheath (104), the guide sleeve (102) is combined with the rigid sheath (104), the distributor (101) is fixed to the handle (105), and the flexible sheath ( 103) passes through the guide sleeve (102) and the rigid sheath (104), the end of which is fixed to the main cavity portion of the distributor (101) and is gripped by the outer surface of the rigid sheath (104). A convenient sheath ring (112) is fixed,
The integrated flexible endoscope that can be adjusted in all directions includes an angle adjusting mechanism (200) used for bending the flexible sheath (103), and the flexible sheath (103) and the rigid sheath (104). and turning localization mechanism (300) to be used, the feed mechanism flexible sheath (103) is used to relative to the rigid sheath (104) and (400), only contains,
The flexible sheath feeding mechanism (400) includes a flexible sheath cap (402), the flexible sheath cap (402) has a tubular structure, and two stepped surfaces having unequal diameters are provided on the outer surface thereof. The outer surface of the stepped surface (406) having a larger diameter is streamlined along the axial direction, the outer surface of the stepped surface (407) having a smaller diameter is an arc surface, and has a linear shape along the axial direction. The end face (404) having a larger diameter of the flexible sheath cap (402) is a slope, and can be combined with the inner hole of the hard sheath (104), and the cover piece for fixing the wire to the end face (404). (405) is provided, and the inner hole of the soft sheath cap (402) is fitted to the outer surface of the head of the soft sheath (103) and fixedly connected thereto, and the wire head in the soft sheath (103) is covered with the cover piece. 405) and fixedly connected, said rigid sheath (104) fitted on the outside of the flexible sheath (103), that can be the outer end surface of the rigid sheath (104) is combined with stepped end face of the flexible sheath cap (402) An integrated, flexible endoscope that is adjustable in all directions. The distributor (101) is a part of the front part of the handle, a circular main cavity is provided at the front end of the distributor (101), the guide sleeve (102) is located in the main cavity, and the guide sleeve ( 102) is provided between the outer surface of the main cavity and the inner surface of the main cavity, and the rear end of the rigid sheath (104) is fitted outside the guide sleeve (102) and inserted into the gap. (101), three distribution cavities (109) are provided at another end opposite to the main cavity, and the inner ends of the three distribution cavities (109) are collected at the inner end of the main cavity. An integral-type soft endoscope that can be adjusted in all directions according to claim 21 . The three distribution cavities (109) are an instrument catheter, a stainless capillary, and an image and illumination sensor catheter, respectively, and one chamber is provided at the base of the main cavity in the distributor (101), and the instrument catheter, the stainless capillary, The image and illumination sensor catheter, the guide sleeve (102) and the inner end of the flexible sheath (103) are all collected in the chamber and coagulated together with a cured resin (113). Item 23. An integrated soft endoscope that is adjustable in all directions according to Item 22 . 23. The total according to claim 22 , characterized in that the center line of each of the three distribution cavities (10 9 ) forms a depression angle of 7 ° to 13 ° with the center line of the main cavity, respectively. Integrated soft endoscope with adjustable orientation. The flexible sheath (103) is provided with three channels penetrating along the axial direction thereof, and the three channels communicate with the three distribution cavities (109) of the distributor (101), respectively. The integrated soft endoscope which can be adjusted in all directions according to claim 22 . The direction changing localization mechanism (300) includes an elastic chuck (111) combined with a screw thread at the front end of the main cavity of the distributor (101), and the front end of the main cavity of the distributor (101) can be elastically contracted. By tightening the elastic chuck (111), the front end of the main cavity can be contracted, the rigid sheath (104) can be tightened, and the rigid sheath (104) and the distributor (101) are fixed. An integrated soft endoscope that can be adjusted in all directions according to any one of claims 21 to 25 . The angle adjustment mechanism (200) includes an angle adjustment wire (202), a handle (105), a nut (204), and a screw (206), and the screw (206) is attached to a stereotactic hole of the handle (105), The nut (204) is positioned in the position restricting groove (203) of the handle (105) and combined with the screw (206), and one of the position restricting grooves (203) is positioned on the surface of the handle (105) to form an opening. And a part of the outer surface of the nut (204) is located in the opening part of the position restricting groove (203) of the handle (105), and the angle adjusting wire (202) is connected to the screw (206). The integrated soft endoscope which can be adjusted in all directions according to any one of claims 21 to 25 . 28. The integrated flexible endoscope as claimed in claim 27 , characterized in that the axes of the screw (206) and the handle (105) are parallel. 28. The integrated soft-hardened inner part adjustable in all directions according to claim 27 , characterized in that the localization holes are respectively located on two side surfaces facing in the axial direction in the position regulating groove (203). Endoscope. 28. The integrated flexible endoscope as claimed in claim 27 , wherein a bearing is provided between the stereotaxic hole and the screw (206). 28. The integrated flexible endoscope according to claim 27 , wherein the width of the position restricting groove (203) matches the width of the nut (204). 26. The step of any one of claims 21 to 25 , characterized in that the step h between the two stepped surfaces in the flexible sheath cap (402) and the thickness of the hard sheath (104) adapted therefor are the same. The integrated soft endoscope which can be adjusted in all directions according to the item . The cover piece (405) and the soft sheath cap (402) are of an integrated structure, and the cover piece (405) is located at the farthest part of the inclined end surface (404) . adjustable integral軟硬of endoscope in all directions according to any one.

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