Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00131—Accessories for endoscopes
  • A61B1/00135—Oversleeves mounted on the endoscope prior to insertion
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00064—Constructional details of the endoscope body
  • A61B1/00071—Insertion part of the endoscope body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00147—Holding or positioning arrangements
  • A61B1/00154—Holding or positioning arrangements using guiding arrangements for insertion
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/005—Flexible endoscopes
  • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
  • A61B1/0052—Constructional details of control elements, e.g. handles
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/005—Flexible endoscopes
  • A61B1/01—Guiding arrangements therefore

Definitions

• the present invention relates to a medical device, and more particularly to a soft and hard sheath guiding mechanism and an integrated omnidirectional adjustable soft and rigid endoscope. Background technique
• endoscopes In clinical medicine, the use of endoscopes for treatment is currently the most commonly used method of diagnosis and treatment for patients with less damage.
• Traditional endoscopic treatment requires the cooperation of multiple physicians.
• the diagnosis and treatment effect of the endoscope is highly dependent on the skill and experience of the physician. Since the endoscope invades the examination in the patient, it takes a long time, which is a technical requirement for the physician. It is higher and has high requirements for the stability and sensitivity of the endoscope device. To avoid repeated angle adjustment and positioning in the patient, the high safety and high efficiency of the endoscope device are required to meet the requirements of clinical diagnosis and treatment. urgent need.
• Chinese Patent No. CN201010266551.4 discloses a "combined soft and hard endoscope".
• This patent utilizes the relative movement between the handle sleeve and the handle cover in the steering handle to effect relative telescoping and rotation between the outer tube and the inner tube.
• the catheter portion of the patent comprises a rigid tube and a soft sheath made of stainless steel and plastic, the hard tube being sheathed outside the soft sheath, the hard tube being fixedly connected to the handle sleeve by a connecting flange, the soft sheath passing through The through hole in the center of the handle sleeve is connected to an interface of the pipe connector and fixed at the interface.
• the soft end and the hard sheath of the endoscope are directly in contact with each other for relative movement. Since the soft material of the soft sheath itself is soft and deformable, it is easy to cause the device in the soft sheath to be replaced continuously. Soft sheath bending, long-term use will reduce the sensitivity of the instrument, the loss of the soft sheath of the endoscope is large, which may cause damage to the fiberscope or image and the illumination sensor. At the same time, due to the inconvenience of the operation due to the bending of the pipe, the seat belt for the operation is given. Come to the hidden dangers. At the same time, the mechanism for achieving relative expansion and contraction between the outer tube and the inner tube by the above endoscope is not mature and the operation is not convenient. Summary of the invention
• the object of the present invention is to overcome the deficiencies of the above background art, and provide a soft and hard sheath guiding mechanism and an integrated omnidirectional adjustable soft and hard endoscope, which has the advantages of simple operation, high repeating operation accuracy, and softness.
• the sheath is not easily deformed and has strong stability.
• a soft and hard sheath guiding mechanism for an endoscope includes a dispenser, a guiding sleeve, a soft sheath, a hard sheath and a handle, wherein: one end of the guiding sleeve Fixed at the outlet of the dispenser, coaxially disposed with the outlet of the dispenser, the other end of the guiding sleeve being inserted into the hard sheath, the guiding sleeve being matched with the hard sheath, the handle being constituted by the mating handle head and the handle sleeve, The dispenser is secured within the handle head and the hard sheath is secured to the handle sleeve, the soft sheath passing through the guide sleeve and the hard sheath, the ends of which are secured at the outlet of the dispenser.
• the dispenser comprises a fixing member, and a main channel capable of inserting the guiding sleeve and the soft sheath is arranged at the outlet end of the fixing member, and four dispensing channels are opened in the fixing member opposite to the main channel at the other end.
• the outer ends of the four distribution channels are located at the end faces of the fixing members, and the inner ends of the four distribution channels are gathered to gather at the inner ends of the main channels.
• the respective central axes of the four distribution channels are formed 7 respectively with the central axis of the fixture. -13.
• the side of the main channel of the dispenser is provided with a fastening screw, and the soft sheath located in the main channel of the dispenser is fixed by the fastening screw.
• the guide sleeve is a stainless steel tube that is welded to the main end of the outlet end of the dispenser.
• the soft sheath is internally provided with three passages extending in the axial direction thereof.
• the handle head and the handle sleeve are both cylindrical structures, and are sleeved together with each other.
• the front end of the hard sheath and the handle sleeve are connected by a spring collet.
• the integrated omnidirectional adjustable soft and hard endoscope using the soft and hard sheath guiding mechanism of the present invention further comprises an angle adjusting mechanism for bending the endoscope soft sheath and a soft sheath and a hard endoscope for the endoscope A steering positioning mechanism between the sheaths, and a soft sheath propulsion mechanism for the soft sheath of the endoscope relative to the hard sheath.
• the angle adjusting mechanism includes an angle adjusting wire, a handle, a nut, and a screw.
• the screw is installed in a positioning hole on the handle, and the nut is located in the limiting groove in the handle, and is matched with the screw.
• Bit slot One end is located on the surface of the handle, and a part of the outer surface of the nut is located at the opening of the limiting groove on the handle, and the angle adjusting wire is connected with the screw.
• the screw is parallel to the axis of the handle.
• the screw and the angle adjusting steel wire are connected by a connecting member
• the connecting member is a columnar body
• one end of the connecting member is provided with a thread
• a screw hole is arranged in the screw
• the connecting member is screwed with the screw thread
• the connecting member is further connected
• One end is provided with a connecting hole
• the angle adjusting wire is fixed in the connecting hole.
• the positioning holes are respectively located on two axially opposite sides of the limiting slot.
• a bearing is disposed between the positioning hole and the screw.
• the width of the limiting slot is adapted to the width of the nut.
• the steering positioning mechanism includes a handle head, a handle sleeve, an eccentric wheel, a shift lever, a rotating shaft, and a positioning hole for placing the rotating shaft is disposed in the handle head, and one end of the rotating shaft is connected to the eccentric wheel, and the other end is connected with the shifting rod.
• the rotating shaft is arranged along the axial direction of the handle head, and the surface of the handle head is provided with an open slot in the circumferential direction.
• the lever is located in the open slot, and the lower end of the lever is fixedly connected with the rotating shaft, and the eccentric wheel and the rotating shaft are eccentrically arranged.
• the end side of the open slot is provided with a limiting slot.
• the eccentric is pressed against the inner surface of the handle sleeve and is in a locked state.
• the surface of the eccentric wheel has a circular arc shape.
• the soft sheath propulsion mechanism comprises a soft sheath, a soft sheath cap and a hard sheath
• the soft sheath cap has a round tubular structure, and the outer surface thereof is provided with two step faces having different diameters, and the diameter is larger
• the outer surface of the step surface is streamlined in the axial direction, and the outer surface of the step surface having a smaller diameter is a circular arc surface, which is linear in the axial direction and can cooperate with the inner hole of the hard sheath, the soft sheath cap having a larger diameter
• the end surface is a sloped surface, and a stopper for fixing the steel wire is disposed on the end surface;
• the inner hole of the soft sheath cap is sleeved on the outer surface of the soft sheath head, and is fixedly connected thereto, and the wire head in the soft sheath is
• the baffle is fixedly connected; the hard sheath is sleeved outside the soft sheath, and the outer end surface of
• the step height h between the two step faces of the soft sheath cap is the same as the matching hard sheath thickness.
• the blocking piece and the soft sheathing cap are in an integrated structure, and the blocking piece is located at the farthest part of the inclined end surface.
• the flap is located at a position corresponding to the control steering passage in the soft sheath cross-section.
• the present invention also provides a soft and hard sheath guiding mechanism for an endoscope, which comprises a dispenser, a guiding sleeve, a soft sheath, a hard sheath and a handle, characterized in that: a guiding sleeve is further included
• the guiding sleeve is fixed at one end of the main channel of the dispenser, coaxially with the main channel of the dispenser, and the other end of the guiding sleeve is inserted into the hard sheath.
• the guiding sleeve cooperates with the hard sheath, the dispenser is fixed on the handle, the soft sheath passes through the guiding sleeve and the hard sheath, and the end is fixed at the main channel of the dispenser, and the outer surface of the hard sheath is fixed There is a sheath ring that is easy to hold.
• the dispenser is a part of the front head of the handle, and a circular main channel is arranged at the front end of the dispenser, the guiding sleeve is located in the main cavity, the outer surface of the guiding sleeve and the main cavity a gap is provided between the inner surfaces of the track, the rear end of the hard sheath is sleeved outside the guiding sleeve and inserted into the gap, and three dispensing channels are opened at the opposite end of the distributor and the main channel, the three dispensing channels The inner ends of the collection gather at the inner end of the main channel.
• the three dispensing channels are respectively formed by an instrumentation catheter, a stainless steel capillary tube and an image and illumination sensor catheter, and a chamber is provided at the root of the main channel of the dispenser, the instrument catheter, stainless steel capillary, image and illumination
• the sensor tube and the guide sleeve and the inner end of the soft sheath are gathered and gathered in the chamber to be solidified together with the curing glue.
• the respective central axes of the three distribution channels are formed 7 respectively with the central axis of the main channel. -13.
• the soft sheath is internally provided with three passages extending in the axial direction thereof, the three passages being respectively in communication with the three distribution passages of the dispenser.
• the integrated omnidirectional adjustable soft and hard endoscope using the soft and hard sheath guiding mechanism of the present invention further comprises an angle adjusting mechanism for bending the endoscope soft sheath and a soft sheath and a hard endoscope for the endoscope A steering positioning mechanism between the sheaths, and a soft sheath for the endoscope relative to the hard sheath advancement mechanism.
• the steering positioning mechanism is composed of a resilient collet that is threadedly engaged with the front end of the main channel of the dispenser, and the front end of the main channel of the dispenser is a collapsible elastic collet, and tightening the elastic collet enables the front end of the main passage Shrink the hard sheath to secure the hard sheath to the dispenser.
• the angle adjusting mechanism includes an angle adjusting wire, a handle, a nut, and a screw.
• the screw is installed in a positioning hole on the handle, and the nut is located in the limiting groove in the handle, and is matched with the screw.
• One end of the bit groove is open on the surface of the handle, and a part of the outer surface of the nut is located at the opening of the limiting groove on the handle, and the angle adjusting wire is connected with the screw.
• the screw is parallel to the axis of the handle.
• the positioning holes are respectively located on two axially opposite sides of the limiting slot.
• a bearing is disposed between the positioning hole and the screw.
• the width of the limiting slot is adapted to the width of the nut.
• the soft sheath propulsion mechanism comprises a soft sheath, a soft sheath cap and a hard sheath, and the soft sheath cap is round tubular
• the outer surface of the structure is provided with two step surfaces having different diameters, and the outer surface of the step surface having a larger diameter is streamlined in the axial direction, and the outer surface of the step surface having a smaller diameter is a circular arc surface, which is straight along the axial direction.
• the inner end of the soft sheath cap has a beveled surface, and the end surface of the soft sheath cap is provided with a blocking piece for fixing the steel wire; the inner hole of the soft sheath cap is sleeved on the soft sheath The outer surface of the head is fixedly connected thereto, and the wire head in the soft sheath is fixedly connected with the blocking piece; the hard sheath is sleeved outside the soft sheath, and the outer end surface of the hard sheath can be matched with the step end surface of the soft sheath cap.
• the step height h between the two step faces of the soft sheath cap is the same as the matching hard sheath thickness.
• the blocking piece and the soft sheathing cap are in an integrated structure, and the blocking piece is located at the farthest part of the inclined end surface.
• the flap is located at a position corresponding to the control steering passage in the soft sheath cross-section.
• the front part guiding sleeve is made of a hard material tube, preferably a stainless steel tube, and the guiding sleeve is finally welded to the dispenser in the endoscope.
• the stainless steel material guiding sleeve is fixed, guided and positioned. During the operation, the traction steering wire is retracted, pulling the whole soft sheath to turn, and after loosening, due to the steel characteristics of the guiding sleeve. The entire soft sheath can be quickly returned under the constraints of the guiding sleeve.
• the invention not only has simple operation, but also can form an effective connection between the inner soft sheath and the outer hard sheath, and the soft sheath is turned or telescopically guided by the stainless steel guiding sleeve in the inner hard sheath guiding mechanism.
• the restriction makes the inner soft sheath fixed in the orbit, the soft sheath does not retract and does not twist the invariant type, and can realize repeated operations, thereby providing safety for the operation. Its clinical significance is that it can solve many technical bottlenecks due to the direct connection between the inner hard sheath and the soft sheath bending, deformation and recoverability caused by the repeated operation of the soft sheath during the operation. Safer and more sensitive.
• the angle adjusting mechanism of the invention has the characteristics of reliable limit, simple structure, convenient processing and assembly, strong independence of angle adjustment, convenient adjustment and fixing.
• the steering positioning mechanism of the invention has the characteristics of reliable limit, simple structure, convenient processing and assembly, strong independence of limit adjustment, convenient adjustment and fixing.
• the soft sheath propulsion mechanism of the invention has the advantages of simple structure and convenient manufacture, and the outer surface of the soft sheath cap is designed to be smooth, so that the contact surface with the human body tissue is smooth and not sharp during repeated operation of the endoscope, and is not puncture by a doctor. Excessive strength and damage to human tissue can protect the patient's body tissue to a certain extent.
• the soft sheath cap can function to fix the soft sheath and the hard sheath, so that during the operation, as the soft sheath is twisted and bent, the soft sheath does not return.
• the invention has the characteristics of accurate guiding, reliable positioning, simple structure, convenient processing and assembly, convenient adjustment and fixation.
• FIG. 1 is a schematic structural view of a soft and hard sheath guiding mechanism according to Embodiment 1 of the present invention
• Figure 2 is a schematic structural view of the dispenser of Figure 1;
• Figure 3 is a schematic cross-sectional view of the dispensing chamber of the dispenser at C in Figure 1;
• Figure 4 is a schematic cross-sectional view of the main passage of the dispenser of Figure 1;
• Figure 5 is a partial enlarged view of the connecting portion of the distributor and the guiding sleeve at A in Figure 1;
• Figure 6 is a partial enlarged view of the connecting portion of the guiding sleeve and the hard sheath at B in Figure 1;
• FIG. 7 is a schematic structural view of the angle adjusting mechanism of the embodiment 2 - the all-round adjustable soft and hard endoscope;
• FIG. 8 is the steering position positioning mechanism of the embodiment 2 - the all-round adjustable soft and hard endoscope ( 300) schematic diagram of the structure;
• Figure 9 is a schematic view of the open slot and the limiting slot illustrated in Figure 8.
• Figure 10 is a schematic view showing the structure of the hard sheath and the soft sheath of the soft sheath propulsion mechanism according to the second embodiment and the fourth embodiment;
• Fig. 11 is a schematic view showing the structure of the hard sheath and the soft sheath cap of the soft sheath propulsion mechanism according to the second embodiment and the fourth embodiment.
• FIG. 12 is a schematic structural view of a soft and hard sheath guiding mechanism according to Embodiment 3 of the present invention.
• Figure 13 is a partial enlarged view of D in Figure 12;
• Figure 14 is a partial enlarged view of E in Figure 12;
• Figure 16 is a schematic structural view of the angle adjusting mechanism of Embodiment 4.
• Figure 17 is an outline view of Embodiment 4. detailed description
• Embodiment 1 Referring to Figures 1-6, this embodiment is a soft and hard sheath guiding mechanism for an endoscope, which includes a dispenser 101, a guiding sleeve 102, a soft sheath 103, a hard sheath 104, and a handle 105.
• the guiding sleeve 102 is fixed at the outlet of the main passage of the distributor 101, coaxially with the main passage of the distributor 101, and the other end of the guiding sleeve 102 is inserted into the hard sheath 104, and the guiding sleeve 102 is hard.
• the sheath 104 is capable of relative axial movement and circumferential rotation.
• the handle 105 is composed of a mating handle head 106 and a handle sleeve 107.
• the dispenser 101 is fixed on the handle head 106, the hard sheath 104 is fixed on the handle sleeve 107, and the soft sheath 103 passes through the guide sleeve 102 and the hard sheath 104.
• the end is fixed to the main passage at the outlet of the dispenser 101.
• the dispenser 101 includes a fixing member 108, and a main passage into which the guiding sleeve 102 and the soft sheath 103 can be inserted is provided at the outlet end of the fixing member, and four dispensing passages 109 are opened in the fixing member 108 opposite to the main passage.
• the outer ends of the four distribution channels 109 are located at the end faces of the fixing members 108, and the inner ends of the four distribution channels 109 are gathered to gather at the inner ends of the main channels.
• the respective central axes of the four distribution channels 109 form an angle of between 7 and 13 degrees with the central axis of the main channel, respectively, and converge at the mouth of the soft sheath 103 at the inner end of the main channel.
• the handle head 106 and the handle sleeve 107 are both cylindrical and sleeved together.
• a fastening screw 110 is provided on the side of the main passage at the outlet of the dispenser 101, and the soft sheath 103 of the main passage located at the outlet of the dispenser 101 is fixed by the fastening screw 110.
• the guide sleeve 102 is a stainless steel tube that is welded to the outlet end of the dispenser 101.
• the hard sheath 104 and the handle sleeve 107 are connected by a collet 111.
• the soft sheath 103 has three passages therethrough (see Fig. 4).
• the three channels are divided into a control steering channel, an image and illumination sensor channel and a working channel, the working channel having a cross section larger than a cross section of the control steering channel or the image and illumination sensor channel; the cross section of the working channel is A profiled section formed by the arc and the curved line; the cross section of the steering channel and the control steering channel and the image and illumination sensor channel are both circular; the cross sections of the three channels are circumferentially distributed along the cross section of the soft sheath.
• the soft and hard sheath guiding mechanism of the present invention works as follows:
• the four dispensing channels 109 are respectively connected to the endoscope instrument channel, the water injection channel, the image and illumination sensor channel and the control steering channel, the endoscope instrument, the annotation
• the water pipe, image and illumination sensor and wire enter the dispenser 101 in accordance with respective dispensing channels 109, and the other ends of the four dispensing channels 109 in the distributor 101 are gathered together to enter the guiding sleeve 102 located in the dispenser 101.
• the soft sheath 103 in the pipe, the soft sheath 103 is connected to the hard sheath 104 along the axial extension of the guiding sleeve 102 under the restriction of the guiding sleeve 102.
• the guiding sleeve 102 is a rigid pipe
• the guiding sleeve 102 is The hard sheath 104 is sleeved to prevent the soft sheath 103 from directly contacting the hard sheath 104.
• the soft sheath 103 can be sleeved in the guiding sleeve and can perform circumferential rotation and axial movement. In actual operation, the soft sheath can satisfy the operation. Operational requirements, can complete extension, retraction and rotation
• the action due to the characteristics of the hard material of the guiding sleeve, can restrict the soft sheath from moving in a defined orbit, without the phenomenon of deflection or distortion of the soft sheath, easy to use, accurate positioning and repeatability during the operation. High, it provides a guarantee for surgical safety.
• Embodiment 2 Referring to FIG. 7-11, this embodiment relates to an integrated omnidirectional adjustable soft and hard endoscope using the soft and hard sheath guiding mechanism of Embodiment 1, which includes the soft method described in Embodiment 1.
• an angle adjusting mechanism 200 for bending the endoscope soft sheath 103 and a steering positioning mechanism 300 for the endoscope soft sheath 103 and the hard sheath 104, and an endoscope for the endoscope are also included.
• the soft sheath 103 advances the mechanism 400 relative to the hard sheath 104.
• FIG. 7 shows an angle adjustment mechanism 200 for an integrated omnidirectional adjustable soft and hard endoscope.
• the angle adjusting mechanism 200 mainly includes an angle adjusting wire 202, a handle 105, a nut 204, and a screw 206.
• the screw 206 is mounted in the positioning hole 205 of the handle 105.
• the nut 204 is located in the limiting groove 203 in the handle 105, and the screw 206
• one end of the limiting groove 203 is open on the surface of the handle, and a part of the outer surface of the nut 204 is located at the opening of the limiting groove 203 on the handle, and the angle adjusting wire 202 is connected to the screw 206.
• the screw 206 is parallel to the axis of the handle 105.
• the screw 206 and the angle adjusting wire 202 are connected by a connecting member 207.
• the connecting member 207 is a columnar body. One end of the connecting member 207 is provided with a thread.
• the screw 206 is provided with a screw hole 208.
• the connecting member 207 is screwed with the screw 206, and is connected.
• the other end of the member 207 is provided with a connecting hole 209, and the angle adjusting wire 202 is fixed in the connecting hole 209.
• the positioning holes 205 are respectively located on the axially opposite sides of the limiting groove 203.
• a bearing is provided between the positioning hole 205 and the screw 206.
• the width of the limiting groove 203 is adapted to the width of the nut 204.
• the angle adjusting mechanism uses the nut 204 and the screw 206 to solve the deficiencies of the prior art.
• the nut 204 and the screw 206 cooperate, and the screw 206 is driven to move back and forth by the shifting nut 204, thereby controlling the angle adjusting wire connected to the screw 206.
• 202 Perform endoscope angle adjustment. Since the thread matched by the nut 204 and the screw 206 is designed as a thread having a self-locking function, the screw 206 can only be controlled by the nut 204 during the adjustment process, thereby controlling the angle adjusting wire 202, the nut 204 connected to the screw 206.
• the control can be conducted from the outside to the angle adjusting wire 202, and the angle adjusting wire 202 does not have a torsional moment excessively due to repeated use, and the screw 206 is reversed, forcing the screw 206 to retract, causing the endoscope angle adjusting mechanism to malfunction, and the angle adjustment occurs.
• the screw 206 of the present invention is an indispensable and most basic part.
• the nut 204 and the screw 206 can be assembled into a component before assembly, and then the assembly is screwed into the endoscope handle 105 for fixing.
• the angle adjustment mechanism 200 has good angular adjustment reliability, simple structure, and is easy to assemble and adjust. It has the advantages of accurate positioning and stable positioning.
• 8 and 9 show a steering positioning mechanism 300 for an integrated omnidirectional adjustable soft and hard endoscope, which mainly includes a handle head 106, a handle sleeve 107, an eccentric wheel 303, a shift lever 304, and a rotating shaft. 305, a positioning hole 306 is disposed in the handle head 106 for placing the rotating shaft 305.
• the rotating shaft 305 is connected to the eccentric wheel 303, and the other end is connected to the shifting rod 304.
• the rotating shaft 305 is axially arranged along the handle head 106.
• the surface of the handle head 106 is circumferential.
• the opening is provided with an opening slot 307.
• the lever 304 is located in the opening slot 307.
• the lower end of the lever 304 is fixedly connected to the rotating shaft 305, and the eccentric wheel 303 and the rotating shaft 305 are eccentrically arranged.
• the end side of the opening groove 307 is provided with a limiting groove 308.
• the eccentric wheel 303 is pressed against the inner surface of the handle sleeve 107 to be in a locked state.
• the surface of the eccentric wheel 303 has a circular arc shape.
• the lower end of the lever 304 is fixedly coupled to the rotating shaft 305 in the handle head 106, and the upper end of the lever 304 is disposed in the opening groove 307 of the handle head 106.
• the upper end of the operator control lever 304 slides left and right in the opening slot 307.
• the eccentric 303 is rotated by the rotating shaft 305, and the lever 304 is rotated by the lever 304.
• One end rotates the eccentric wheel 303, and the friction surface of the eccentric wheel 303 rotates from below to the upper side to contact the friction surface of the handle head 106 of the endoscope, thereby increasing the friction between the eccentric wheel 303 and the inner surface of the handle head 106, thereby realizing the steering.
• Positioning During the actual operation of the endoscope, the handle head 106 and the handle sleeve 107 are used together.
• the endoscope is required to accurately position and aim the lesion.
• the lever 304 of the present invention needs to be dialed, so that the lever 304 slides in the opening slot 307 of the outer surface of the handle head 106, and the rotating shaft 305 is rotated in the circumferential direction, thereby driving the eccentric 303 to rotate circumferentially, so that the eccentricity is made.
• the friction surface of the wheel 303 is turned from below to the upper side, and the friction surface of the eccentric wheel 303 is in contact with the inner surface of the handle head 106, which increases the friction between the two, so that the limit between the handle head 106 and the handle sleeve 107 is fixed. .
• the steering positioning mechanism performs positioning after the endoscopic soft sheath is probed into the patient's body and the rotation is completed.
• 10 and 11 show a soft sheath propulsion mechanism 400 for an integrated omnidirectional adjustable soft and rigid endoscope, including a soft sheath 103, a soft sheath cap 402 and a hard sheath 104, and a soft sheath cap 402.
• the soft sheath cap 402 Fixed around the soft sheath, the soft sheath cap 402 has a circular tubular structure, and the outer surface thereof is provided with two step surfaces having different diameters.
• the outer surface of the larger diameter step surface 406 is streamlined in the axial direction and has a smaller diameter.
• the outer surface of the stepped surface 407 is linear in the axial direction and can be matched with the inner hole of the hard sheath 104.
• the outer end surface 404 of the soft sheath 402 having a larger diameter is a sloped surface, and a fixed wire is disposed on the end surface 404.
• the retaining piece 405, the inner hole of the soft sheath cap 402 is sleeved around the outer periphery of the head of the soft sheath 103, and the wire head in the soft sheath is fixedly connected with the blocking piece 405, and the outer portion of the hard sheath 104
• the end face can be engaged with the step end face of the soft sheath cap 402.
• the step height h between the two step faces of the soft sheath cap is the same as the thickness of the hard sheath 104 matched thereto.
• Blank 405 and soft The sheath cap 402 is of an integrated structure, and the flap 405 is located at the farthest portion of the inclined end surface 404. The flap 405 is located at a position corresponding to the wire passage in the soft sheath 103 in the cross section of the soft sheath cap 402.
• the outer diameter of the hard sheath is the same as the diameter of the small end of the stepped surface 406 having a large diameter of the soft sheath cap 402.
• This embodiment also provides an endoscope soft sheath in which 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 in this embodiment is sleeved on the soft sheath 103 and cooperates with the soft sheath port.
• the flap 405 of the soft sheath cap 402 makes the soft sheath port not separate from the soft sheath cap. 402, forming a whole with the soft sheath cap 402, the smooth outer surface of the soft sheath cap 402 makes the soft sheath head less likely to stab the human tissue during the insertion operation, and increases the safety of the endoscope during the operation. Sex.
• the soft sheath cap 402 is larger than the gap between the soft sheath 103 and the hard sheath 104, the soft sheath does not shrink into the hard sheath 403 during retraction, and its clinical significance It can solve many technical problems caused by the lack of soft sheath of soft sheath. For example, when the soft sheath moves along the natural cavity of the human body during the operation or puncture, the puncture hardness is not enough due to the soft material nature of the soft sheath. Difficulty; When the soft sheath is retracted, it is easy to shrink into the hard sheath, which makes the soft sheath and the hard sheath less strong during the operation and easy to separate.
• Embodiment 3 Referring to FIG. 12 to FIG. 14.
• This embodiment relates to another soft and hard sheath guiding mechanism for an endoscope, which includes a dispenser 101, a guiding sleeve 102, a soft sheath 103, and a hard sheath 104.
• a handle 105 further comprising a guiding sleeve 102, the guiding sleeve 102 is fixed at the main channel of the distributor 101, coaxially arranged with the main channel of the distributor 101, and the other end of the guiding sleeve 102 is inserted In the hard sheath 104, the guide sleeve 102 is mated with the hard sheath 104.
• the dispenser 101 is a part of the front head of the handle and is fixed on the handle 105.
• the main channel of the dispenser 101 has a circular cross section and is disposed at the front end of the dispenser 101.
• the guiding sleeve 102 is located in the main channel.
• a gap is provided between the outer surface of the guiding sleeve 102 and the inner surface of the main channel, and the rear end of the hard sheath 104 is sleeved outside the guiding sleeve 102 and inserted into the gap, and three distributors are disposed at the opposite end of the main channel and the main channel.
• the channel 109, the three distribution channels 109 are respectively composed of an instrument catheter, a stainless steel capillary tube and an image and illumination sensor catheter, and a chamber is provided at the root of the main channel of the dispenser 101, the instrument catheter, the stainless steel capillary tube,
• the image and illumination sensor conduits, as well as the inner ends of the guide sleeve 102 and the soft sheath 103, are gathered together and solidified together in the chamber with the curing gel 113.
• the respective central axes of the three distribution channels 103 are respectively formed 7 with the central axis of the main channel. -13.
• the soft sheath 103 passes through the guiding sleeve 102 and the hard sheath 104, the ends of which are fixed at the main channel of the dispenser 101,
• the outer surface of the hard sheath 104 is fixed with a sheath ring 112 that is convenient for holding by hand.
• the soft sheath 103 is internally provided with three passages extending in the axial direction thereof, the three passages being in communication with the instrument conduit, the stainless steel capillary, and the image and illumination sensor conduits of the three dispensing passages 109 of the dispenser 101, respectively.
• the outer surface of the hard sheath 104 is secured with a sheath ring 112 that is conveniently held by the hand.
• Example 4 See Figures 12-17.
• the present embodiment relates to an integrated omnidirectional adjustable soft and hard endoscope using the soft and hard sheath guiding mechanism of the third embodiment.
• it includes an angle adjusting mechanism 200 for bending the endoscope soft sheath 103 and a steering positioning mechanism for the endoscope soft sheath 103 and the hard sheath 104. 300, and the soft sheath 103 for the endoscope is advanced relative to the hard sheath 104.
• the angle adjusting mechanism 200 of the present embodiment is basically the same as the structure and working principle of the embodiment 2, and the slight difference is that the steering wire of the present embodiment passes through the central through hole of the hollow screw 206 and is fixed to the outer end of the screw 206.
• the advancing mechanism 400 of the present embodiment is identical to the second embodiment, and the drawings are also the same, and the drawing of the embodiment of the present embodiment is omitted.
• the present embodiment is fundamentally different from Embodiment 2 in the steering positioning mechanism.
• the steering positioning mechanism 300 of the present embodiment is composed of a resilient collet 111 that is threadedly engaged with the front end of the main channel of the dispenser 101.
• the front end of the main channel of the dispenser 101 is a collapsible elastic collet, and the elastic collet 111 can be tightened to enable the main The front end of the tunnel is contracted to clamp the hard sheath 104 to secure the hard sheath 104 to the dispenser 101.
• Embodiments 3 and 4 are different from the surfaces of Embodiments 1 and 2, respectively, in that the handles 105 of Embodiments 3 and 4 are one unit, and the handles different from Embodiments 1 and 2 are composed of the handle head 106 and the handle sleeve 107.
• a sheath ring 112 fixed to the outer surface of the hard sheath 104 is added, and the sheath ring 112 is functionally equivalent to the handle sleeve 107 of the first and second embodiments.
• the dispensers of the third and fourth embodiments are different from the first and second embodiments, and the dispensers of the third and fourth embodiments are fixed to the front end of the handle and integrated with the handle 105, and the distribution of the first and second embodiments is different.
• the holders 101 are fixed in the handle head 106, but they are substantially identical since the handles 105 of the embodiments 3, 4 are functionally equivalent to the handle heads 106 of the first and second embodiments.
• the working principle of the steering positioning mechanism of Embodiments 3 and 4 is: holding the handle 105 in one hand and holding the sheath ring 112 fixed on the outer surface of the hard sheath 104 in the other hand, and rotating and telescopically can conveniently adjust the hard sheath and the soft sheath.
• the relative rotational angle and the axial telescopic distance when adjusted in place, tighten the elastic collet 111 of the steering positioning mechanism to secure the hard sheath 104 and the dispenser 101 to lock the relative position between the hard sheath and the soft sheath.
• Other members and connection structures of the endoscope are prior art and will not be described in detail herein.

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• 2012
  • 2012-10-31 WO PCT/CN2012/083798 patent/WO2013064061A1/zh active Application Filing
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