WO2023087737A1 - Partie de courbure d'une partie d'insertion d'endoscope, partie d'insertion d'endoscope et endoscope - Google Patents

Partie de courbure d'une partie d'insertion d'endoscope, partie d'insertion d'endoscope et endoscope Download PDF

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Publication number
WO2023087737A1
WO2023087737A1 PCT/CN2022/103683 CN2022103683W WO2023087737A1 WO 2023087737 A1 WO2023087737 A1 WO 2023087737A1 CN 2022103683 W CN2022103683 W CN 2022103683W WO 2023087737 A1 WO2023087737 A1 WO 2023087737A1
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WO
WIPO (PCT)
Prior art keywords
shaped groove
endoscope
bending
insertion part
bending part
Prior art date
Application number
PCT/CN2022/103683
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English (en)
Chinese (zh)
Inventor
张剑
刘孟华
沈和良
Original Assignee
杭州莱恩瑟特医疗技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN202111355715.5A external-priority patent/CN114451849A/zh
Priority claimed from CN202111354645.1A external-priority patent/CN114504290A/zh
Priority claimed from CN202122803494.5U external-priority patent/CN216535235U/zh
Priority claimed from CN202122803514.9U external-priority patent/CN216535236U/zh
Application filed by 杭州莱恩瑟特医疗技术有限公司 filed Critical 杭州莱恩瑟特医疗技术有限公司
Publication of WO2023087737A1 publication Critical patent/WO2023087737A1/fr

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    • 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
    • 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
    • A61B1/008—Articulations

Definitions

  • the present application relates to the field of medical devices, in particular to a bending portion of an endoscope insertion part, an endoscope insertion part and an endoscope.
  • An endoscope is a common medical instrument, consisting of an operation part and an insertion part.
  • the insertion part is located at the far end of the operation part, and is used to enter the human body through the natural orifice of the human body or through an incision formed by surgery.
  • the insertion part includes a front end and a bending part in order from far to near, and an observation mirror is arranged on the front end.
  • the bending part can be bent according to the control of the operating part, so as to change the observation direction of the observation mirror or change the direction in which the surgical instrument protrudes from the surgical instrument channel or the working channel.
  • the bending part generally adopts a split snake bone structure, that is, multiple tube sections are connected in sequence and can rotate at a certain angle with each other, and the traction wire passes through each tube section to control the bending of the bending part so that the doctor can observe the relevant parts.
  • This structure is often too complex in structure and high in production cost.
  • the device for internal imaging in the related art includes a handpiece, and a connecting pipe extending from the proximal end of the handpiece, and the connecting pipe may include a single flexible or deformable support structure.
  • the monolithic support structure has a series of offset ring segments of a first set of segments and a second set of segments offset approximately 90 degrees from the first set of segments, the first set of segments and the second set of segments.
  • the two sets of segments are connected by pairs of flexure bridges that generally allow flexure in at least one direction, so that the support structure can be manipulated in two dimensions by pulling and/or pushing on appropriate guy wires , to achieve the bending of the connecting pipe.
  • the endoscope bending part in the related art includes a snake bone body; wherein the snake bone body includes a first side and a second side; the first side is opposite to the second side, and the first side is opposite to the second side
  • the second side is provided with a plurality of first grooves arranged in sequence along the axial direction.
  • the snake bone body is provided with a number of first through holes and traction holes axially penetrating through the snake bone body, and a first shaft.
  • the first support member installation hole axially penetrates the inside of the serpentine body, and the first axial rigid support member is arranged in the first support member installation hole, so as to The snake bone body is prevented from being deformed in the axial direction, which is convenient for use.
  • a curved portion of an endoscope insertion portion comprising a strip-shaped body extending along a first direction, and the cross-sectional outer profile of the body in the first direction is 6- 12-sided shape, the body is provided with a plurality of through holes extending along the first direction and passing through the body, and the body is provided with a plurality of V-shaped grooves arranged along the first direction and opening toward the second direction, the second direction is perpendicular to first direction.
  • the body is provided with a plurality of V-shaped grooves arranged along the first direction and opening toward the third direction, and the third direction is perpendicular to the second direction and the first direction at the same time.
  • the body is provided with a plurality of V-shaped grooves arranged along the first direction and opening toward the opposite direction of the second direction and/or toward the opposite direction of the third direction.
  • a V-shaped groove facing the second direction is opposite to a V-shaped groove facing the opposite direction of the second direction to form a first V-shaped groove group; a V-shaped groove facing the third direction is connected to a V-shaped groove facing the second direction.
  • the V-shaped grooves facing the direction opposite to the third direction are oppositely arranged to form a second V-shaped groove group.
  • the interval between two V-shaped grooves with opposite opening directions of the first V-shaped groove group, and/or, the interval between two V-shaped grooves with opposite opening directions of the second V-shaped groove group is 0.3 -0.9mm.
  • first V-shaped groove set and the second V-shaped groove set are arranged at intervals along the first direction.
  • the maximum opening angle of the V-shaped groove is 3.75 times the diameter in millimeters of the circumscribed circle of the cross section of the body.
  • the through holes include a working channel through hole, an auxiliary channel through hole and a harness channel through hole.
  • the harness channel through holes provide paths for pull wires, optical fibers and electrical wires; the working channel through holes provide paths for working channel tubing.
  • the auxiliary channel through-hole provides a path for water pipe or air pipe.
  • the curved portion of the endoscope insertion portion is integrally injection molded.
  • the material of the curved part of the endoscope insertion part is one of silicone rubber, TPE, TPU, PVC and PP.
  • the opening angle of the V-shaped groove increases sequentially.
  • the minimum opening angle of the V-shaped groove is 10 degrees.
  • the present application also provides an endoscope insertion part, including the above-mentioned curved part of the endoscope insertion part.
  • a pulling wire connecting the distal end of the bending part and the operating part of the endoscope is provided in the through hole of the wire harness channel, and the pulling wire is used to control the bending of the bending part according to the action of the operating part;
  • the part between the V-shaped grooves defines a condyle, and every two condyles are separated from each other.
  • the present application also provides an endoscope, including the above-mentioned endoscope insertion part.
  • a curved portion of the insertion portion of the endoscope comprising a strip-shaped body extending along the first direction, and a plurality of holes extending along the first direction and penetrating the body are provided in the body.
  • a through hole the body is provided with a plurality of V-shaped grooves arranged along the first direction and opening towards the second direction, the second direction is perpendicular to the first direction, wherein, the area where the V-shaped grooves are arranged on the outside of the body is provided with
  • the groove has a flat bottom surface, so that the outer edge of the side wall of the V-shaped groove forms a straight edge.
  • the V-shaped groove and the groove form a V-shaped groove area
  • the body is provided with a plurality of V-shaped groove areas arranged along the first direction and opening toward the third direction, and the third direction is perpendicular to the second direction at the same time. direction and first direction.
  • the body is provided with a plurality of V-shaped grooves arranged along the first direction and opening toward the opposite direction of the second direction and/or toward the opposite direction of the third direction.
  • a V-shaped groove area facing the second direction is opposite to a V-shaped groove area facing the opposite direction of the second direction, forming a first V-shaped groove area group; a V-shaped groove area facing the third direction The groove area is opposite to a V-shaped groove area facing the direction opposite to the third direction, forming a second V-shaped groove area group.
  • the projection of the outer edge of the V-shaped groove of a first V-shaped groove block group or a second V-shaped groove block group on a reference plane perpendicular to the first direction is a 6-12 polygon.
  • the interval is 0.3-0.9 mm.
  • first V-shaped groove group and the second V-shaped groove group are arranged at intervals along the first direction.
  • the maximum opening angle of the V-shaped groove is 3.75 times the diameter in millimeters of the circumscribed circle of the cross-section of the outer edge of the V-shaped groove of the V-shaped groove block group.
  • the through holes include a working channel through hole, an auxiliary channel through hole and a harness channel through hole.
  • a rib extending along the first direction is provided on the outer periphery of the bending portion body.
  • the curved portion of the endoscope insertion portion is integrally injection molded.
  • the material of the curved part of the endoscope insertion part is one of silicone rubber, TPE, TPU, PVC and PP.
  • the opening angle of the V-shaped groove increases sequentially.
  • the present application also provides an endoscope insertion part, including the above-mentioned curved part of the endoscope insertion part.
  • a pulling wire connecting the distal end of the bending part and the operating part of the endoscope is provided in the through hole of the wire harness channel, and the pulling wire is used to control the bending of the bending part according to the action of the operating part;
  • the part between the V-shaped grooves defines a condyle, and every two condyles are separated from each other.
  • it also includes: a protective sleeve, which is used to be sleeved on the outside of the bending part; a working channel pipeline placed in the through hole of the working channel, and the material of the working channel pipeline is PVC, TPE, PTFE and TPU
  • a water pipe or air pipe placed in the through hole of the auxiliary channel, the material of the water pipe or the air pipe is one of PVC, TPE, PTFE and TPU.
  • the present application also provides an endoscope, including the above-mentioned endoscope insertion part.
  • FIG. 1 illustrates a perspective view of a structure of a curved portion of an insertion portion of an endoscope according to one or more embodiments.
  • FIG. 2 illustrates a bottom view of a structure of a curved portion of an insertion portion of an endoscope according to one or more embodiments.
  • Figure 3 illustrates a front view of a bend structure provided in accordance with one or more embodiments.
  • FIG. 4 illustrates a left side view of a structure of a bending portion according to one or more embodiments.
  • Fig. 5 shows a sectional view along A-A in Fig. 2 and Fig. 4 .
  • FIG. 6 is a schematic diagram of force acting on the edge of the side wall of the notch or the groove when the bending part is bent in the related art.
  • Fig. 7 is a schematic diagram of force acting on the edge of the side wall of the V-shaped groove when the bending part is bent according to one or more embodiments.
  • FIG. 8 illustrates a front view of a partial structure of a curved portion of an insertion portion of an endoscope according to one or more embodiments.
  • FIG. 9 shows a top view of the structure shown in FIG. 8 .
  • FIG. 10 shows a cross-sectional view along B-B of FIG. 9 .
  • Fig. 11 is a structural perspective view of an endoscope according to one or more embodiments.
  • Fig. 12 is a perspective view of an internal structure of an operating portion of an endoscope according to one or more embodiments.
  • FIG. 13 is a partially enlarged schematic view at point C in FIG. 12 .
  • orientation or positional relationship indicated by the term "upper” is based on the orientation or positional relationship shown in the drawings, or the orientation or position that the inventive product is usually placed in use.
  • the relationship is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.
  • the terms “near” and “far” are relative positional relationships.
  • the side close to the operator is "Near”
  • the side closer to the target object is "Far”.
  • the terms "setting”, “connecting” and “connecting” should be understood in a broad sense, for example, it can be a fixed connection or a A detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two components.
  • the terms "setting”, “connecting” and “connecting” should be understood in a broad sense, for example, it can be a fixed connection or a A detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two components.
  • Electronic endoscopy is a medical electronic optical instrument that can be inserted into the human body cavity and viscera cavity for direct observation, diagnosis and treatment, integrating light, mechanics, electricity and other technologies. It uses extremely small electronic imaging components to image the object in the cavity to be observed through a tiny objective lens optical system, then sends the received image signal to the image processing system, and finally outputs the processed image on the monitor for doctors Observation and diagnosis.
  • Electronic endoscopes are divided into electronic gastroscopes, electronic duodenoscopes, and electronic colonoscopes.
  • ERAT Endoscopic Retrograde Appendicitis Therapy
  • ERAT can directly observe the shape of the opening of the appendix through colonoscopy, confirm the diagnosis of appendicitis, and use ERCP-related catheter guide wire technology to perform operations such as intubation, suction decompression, angiography, flushing, and stent drainage of the appendix lumen. .
  • the appendix is located at the lower right of the human abdomen, between the cecum and the ileum. It is a slender and curved blind tube. Its root is connected to the posteromedial wall of the cecum. any direction in the abdominal cavity. According to published literature, the opening of the appendix is often covered by Gerlach's valve, which makes intubation difficult. Among the various steps of ERAT, intubation is the most difficult and the most critical step.
  • the position of the appendix varies a lot, and the internal opening of the appendix is not necessarily at the position facing the endoscope;
  • the colonoscope does not have a lifter, and the direction of the catheter cannot be adjusted by the lifter after the catheter extends out of the endoscopic end during intubation.
  • the bending part and the corresponding insertion part provided by the present application have a large bending angle, and the manipulation force required to form a large bending angle is small, which can be completely applied to an appendoscope and is beneficial to solve the above-mentioned problem of difficult intubation.
  • electronic endoscopes including the above-mentioned appendoscope usually include an operation part and an elongated insertion part positioned at the distal end side of the operation part. Bending in different directions, the observation optical system located on the distal end surface of the insertion part obtains images of the desired observation site, and the operator can perform observation, diagnosis, photography, treatment, etc. based on this. That is to say, when used as the bending part of the insertion part of the endoscope, the distal end of the bending part is provided with an observation optical system, and the proximal end is connected with other parts of the insertion part, and is controlled by the operation part to realize bending.
  • the reason why the bending part deviates from the expected bending orientation in the working state is because the cross section of the bending part body is often circular or ring-shaped. In actual use, it is pulled by the pulling wire, When the bending part is bent, it is actually accompanied by a rotation in the circumferential direction, which can also be called twisting or twisting, which affects the desired bending orientation of the bending part.
  • the split snake bone structure is less twisted because the mutual rotation angles are restricted between the pipe joints, but the split snake bone structure is complicated and the production cost is high; the one-piece snake bone structure usually has the above-mentioned obvious Problem with inaccurate bend orientation.
  • Fig. 1 shows a perspective view of the structure of the bending part of the insertion part of the endoscope provided by an embodiment of the first aspect of the present application.
  • the present application provides a bending part 1 of an endoscope insertion part, including a strip-shaped body 10 extending along a first direction X, and the cross-sectional outer profile of the body 10 in the first direction X is 6 - a 12-sided shape (as an example, shown as a 12-sided shape in Figures 1 to 5), the body 10 is provided with a plurality of through holes 11 extending along the first direction X and passing through the body 10, and the body 10 is provided with a plurality of The V-shaped grooves 111 a are arranged along the first direction X and open toward the second direction Y, and the second direction Y is perpendicular to the first direction X.
  • the cross-sectional outer contour of the body 10 in the first direction is set to be 6-12 polygonal, so that the bending part of the endoscope insertion part provided by the application is not easy to be twisted when it is controlled to bend; through V Compared with other shapes, the setting of the shaped groove further strengthens the above-mentioned beneficial effect of not being easily twisted.
  • the cross-section of the curved part of the endoscope insertion tube is generally designed to be circular or annular, that is, it appears as a cylinder in a relaxed state (not pulled by the pulling wire).
  • the bending part is pulled by the pulling wire and bends.
  • the bending is often accompanied by rotation in the circumferential direction, that is, twisting or twisting, which affects the reach of the bending part. Desired bending orientation, which deviates the viewing angle.
  • the cross-sectional outer contour of the main body 10 in the first direction is set to be 6-12 polygonal, so that the bending part 1 of the endoscope insertion part provided by the present application is bent in the second direction Y 7, the opposite side wall edges of the V-shaped groove are folded straight sides.
  • the V-shaped groove provided by the embodiment of the application follows the bending of the bending part 1, the opposite side walls of the V-shaped groove fit together.
  • the force on the edge of the side wall is not uniform in the circumferential direction, that is, the force at the corner is different from that at the straight edge, so that the bending part 1 can be prevented from rotating in the circumferential direction to a certain extent when it is bent.
  • the cross-sectional outer profile of the body 10 in the first direction is set as a polygon with sides less than 6, it will affect the bending flexibility of the bending part 1 and reduce the number and size of the through holes 11 that the body 10 can accommodate. ; and the anti-distortion performance will also decrease with the increase of the number of sides. Therefore, after trial and error, it is appropriate to set the number of sides of the polygon between 6-12.
  • V-shaped configuration of the V-shaped groove means that the bottom of the groove is linear, so that when the curved part is bent and the opposite side walls of the groove are attached, the area where the two side walls are attached to each other is larger.
  • U-shaped groove or the non-linear bottom arrangement in the related art such an arrangement is also helpful for realizing the effect of anti-distortion.
  • the bending part 1 is a part of the insertion part, and the insertion part needs to be inserted into a human body or a narrow environment, the bending part often needs to be provided with a protective cover outside.
  • Setting the outer contour of the bending part body 10 as a polygon, compared with the circular shape in the related art, is also conducive to axial penetration of the protective sleeve at the bending part.
  • Thread the protective sleeve axially.
  • Fig. 2 shows a bottom view of the structure of the curved portion of the insertion portion of the endoscope provided by an embodiment of the first aspect of the present application, that is, a viewing angle along the Y direction.
  • Fig. 3 shows a front view of the bending part structure provided by an embodiment of the first aspect of the present application, that is, a viewing angle along the Z' direction.
  • Fig. 4 shows a left view of the bending part structure provided by an embodiment of the first aspect of the present application.
  • Fig. 5 shows a sectional view along A-A in Fig. 2 and Fig. 4 .
  • the body 10 is provided with a plurality of V-shaped grooves 112a arranged along the first direction X and opening toward the third direction Z, and the third direction Z is perpendicular to the second direction Y and the first direction at the same time.
  • Direction X The main body 10 is also provided with a plurality of V-shaped grooves 111b arranged along the first direction X and opening toward the opposite direction Y' of the second direction Y, and/or V-shaped grooves 111b opening toward the opposite direction Z' of the third direction Z. shaped groove 112b.
  • a V-shaped groove 111a facing the second direction Y is opposite to a V-shaped groove 111b facing the opposite direction Y' of the second direction Y, forming a first V-shaped groove group 111;
  • the V-shaped groove 112 a in the third direction Z is opposite to a V-shaped groove 112 b facing in the opposite direction Z′ of the third direction Z, forming a second V-shaped groove group 112 .
  • the first V-shaped groove group 111 and the second V-shaped groove group 112 are arranged at intervals along the first direction X, which is beneficial to ensure that the bending part 1 is in the second direction Y, the opposite direction Y' of the second direction, When bending in the third direction Z or the opposite direction Z' of the third direction, the normal bending and structural stability of the bending part 1 are achieved.
  • the interval d between two V-shaped grooves with opposite opening directions in the first V-shaped groove group 111 and/or the second V-shaped groove group 112 is 0.3-0.9 millimeters (as shown in FIG. 2 and Figure 3), to ensure that the bending part 1 has enough bending times.
  • the diameter of the circumscribed circle of the cross section of the body 10 of the bending part 1 is approximately 12 millimeters.
  • the maximum opening angle of the V-shaped groove is 45 degrees. After testing and comparison, it is found that based on the For the structure and material of each component in the embodiment, a larger opening angle is not conducive to the accurate control of the bending angle, and has an adverse effect on the anti-twisting performance; the minimum opening angle of the V-shaped groove is 10 degrees, based on each of the embodiments provided by the application. Due to the combination of component structure and material, a smaller opening angle is difficult to provide the required degree of bending, that is, the angle at which the bending part is controlled to bend in the axial direction.
  • the opening angle of the above-mentioned V-shaped groove is directly related to the diameter of the circumscribed circle of the cross section of the body 10 of the bending part 1, and the cooperation between the two directly affects the bending performance and anti-torsion performance of the bending part 1.
  • the opening angle of the V-shaped groove is roughly linearly related to the diameter of the circumscribed circle of the cross-section of the body 10 of the bending part 1, that is, the maximum opening angle value of the V-shaped groove is the circumscribed circle of the cross-section of the body 10 of the bending part 1.
  • the unit of circle diameter is 3.75 times the numerical value of millimeter.
  • the opening angles ⁇ 1, ⁇ 2, ⁇ 3 of the V-shaped grooves are at most 45 degrees and at least 10 degrees.
  • the opening angle of the V-shaped groove gradually increases, ie ⁇ 1 ⁇ 2 ⁇ 3.
  • ⁇ 1 and ⁇ 3 represent the opening angles of the V-shaped groove closest to the end of the bending part 1 respectively
  • ⁇ 2 represents the opening angle of the V-shaped groove not closest to the end of the bending part 1 .
  • the above-mentioned maximum opening angle and minimum opening angle of the V-shaped groove need not be satisfied at the same time. Especially the minimum opening angle can be adjusted as needed.
  • the through holes 11 may include a working channel through hole 14 , an auxiliary channel through hole 15 or a harness channel through hole 16 .
  • the harness passage through hole 16 may include sub-holes 16a, 16b, 16c to provide paths for pull wires 16a', optical fibers and electrical wires, respectively.
  • the function of the pulling wire 16a' is to control the bending of the bending part 1 according to the operation of the operating part 200. Specifically, one end of the pulling wire 16a' may be fixed to the operating part 200, and the other end of the pulling wire 16a' may be fixed to the bending part after passing through the proximal end of the bending part 1.
  • the pulling wire 16a' can be pulled and loosened by the operating part 200 to drive the head end of the bending part 1 to be pulled and loosened, so as to realize the bending control of the bending part 1 of the insertion part;
  • the optical fiber can pass through The light from the external light source is transmitted to the required position to provide illumination for the process of inserting the endoscope into the human cavity and observing;
  • the wire can be a camera cable that transmits electronic data, or a cable that transmits a large current.
  • the working channel through hole 14 provides a path for the working channel pipeline, and the material of the working channel pipeline can be PVC (Chinese name: polyvinyl chloride), TPE (Chinese name: thermoplastic elastomer), PTFE (Chinese name: polytetrafluoroethylene) And one of TPU (Chinese name: thermoplastic polyurethane elastomer).
  • PVC Polyvinyl chloride
  • TPE Chinese name: thermoplastic elastomer
  • PTFE Polytetrafluoroethylene
  • TPU thermoplastic polyurethane elastomer
  • Auxiliary channel through hole 15 provides path for water pipe or air pipe
  • the material of water pipe or air pipe can be PVC (Chinese name: polyvinyl chloride), TPE (Chinese name: thermoplastic elastomer), PTFE (Chinese name: polytetrafluoroethylene) and One of TPU (Chinese name: thermoplastic polyurethane elastomer).
  • the material of the water pipe or air pipe, the material of the working channel pipeline and the material of the bending part 1 body 10 can cooperate with each other, and the required manipulation strength, bending angle and bending stability can be further controlled through the mutual deployment of the two materials sex.
  • the material of the bending part 1 body 10 can be silicone rubber, TPE (Chinese name: thermoplastic elastomer), TPU (Chinese name: thermoplastic polyurethane elastomer), PVC (Chinese name: polyvinyl chloride) and One of PP (Chinese name: polypropylene).
  • the selection of the above materials is suitable for the integrated arrangement of the bending part 1, and is also suitable for the non-integrated arrangement, that is, the selection of the above materials helps to strengthen the friction between the joints 20 when the joints 20 are separated from each other, so that when After the separated joints 20 are bent with each other, due to the frictional interaction between the joints 20 and the axial pressure formed by the traction wire on the joints 20, the parts in contact with each other can keep their relative positions unchanged, so the reduction can be achieved smoothly.
  • the subhole 16a is provided with a pulling wire 16a' connecting the distal end 13 of the bending part 1 and the operating part 200 of the endoscope, and the pulling wire 16a' is used to control the bending of the bending part 1 according to the action of the operating part 200;
  • the part between two adjacent V-shaped grooves is defined as a joint 20 , and every two joints 20 are separated from each other.
  • the pulling wire 16a' passes through the joints 20 of the bending part 1 one by one along the sub-hole 16a of the wire harness channel 16, and connects the joints 20 together, and the joints 20 are separated or disconnected (that is, not a whole) , but are kept in contact by the connecting effect of the pulling wire 16a'.
  • the bending part 1 is pulled by the traction wire 16a', it bends. Since the joints 20 are separated from each other, they are integrally connected with each other, which reduces the mutual bending constraints and is beneficial to the bending part 1. A larger bending angle is realized; and while a larger bending angle is realized, the pulling force required by the pulling wire 16a' can also be smaller.
  • the bending part 1 can still return to the shape before bending after bending.
  • a protective cover is also provided, and the protective cover also helps the recovery of the shape of the bending part 1 .
  • the curved part of the insertion part of the endoscope is split, and a plurality of metal pipe sections are connected in sequence, or the metal pipes are carved, and the assembly process is complicated and the cost is high.
  • the bending part 1 of the endoscope insertion part provided by the present application is integrally injection-molded, which reduces the assembly of components and reduces the production cost.
  • the first aspect of the present application also provides an endoscope insertion part 300, which includes the bending part 1 of the endoscope insertion part 300 described in the above embodiment, and further includes: a protective sleeve, which is used to be sleeved on the bending part 1; the working channel pipeline placed in the through hole 14 of the working channel, the material of the working channel pipeline is one of PVC, TPE, PTFE and TPU; placed in the auxiliary channel through hole 15
  • the water pipe or air pipe inside, the material of the water pipe or the air pipe is one of PVC, TPE, PTFE and TPU.
  • the first aspect of the present application also provides an endoscope 100 , including the above-mentioned endoscope insertion portion 300 , which has a simple structure and can be manufactured at low cost.
  • the embodiment of the application discloses a bending part 1 of the insertion part of the endoscope, including a strip-shaped body 10 extending along the first direction X, and inside the body 10 is a A direction X extends through a plurality of through holes 11 of the body 10.
  • the body 10 is provided with a plurality of V-shaped grooves 111a arranged along the first direction X and opening toward the second direction Y.
  • the second direction Y is perpendicular to the first direction Y.
  • the straight-edge structure is formed by the outer edge 18 of the side wall of the V-shaped groove 111a, so that the bending part 1 of the insertion part of the endoscope provided by the application is not easily twisted when it is controlled to bend; through the V-shaped groove 111a Compared with other shapes, the setting of further strengthens the above-mentioned beneficial effect that distortion is not easy to occur.
  • multiple grooves 17' are provided along the circumferential direction of the body 10, so that the outer edge 18 of the side wall of the V-shaped groove 111a forms a folding line edge composed of straight sides.
  • the specific implementation of the second aspect of the present application compared to the related art, it can still be realized that when the bending part 1 bends to the second direction Y, due to the V-shaped
  • the outer edge 18 of the opposite side wall of the groove 111a is a straight edge, or further a straight edge forming a fold line, which can prevent the bending part 1 from rotating in the circumferential direction during bending to a certain extent.
  • the V-shaped groove and the groove are defined as the V-shaped groove area.
  • the body 10 may be provided with a plurality of V-shaped groove areas 112a' arranged along the first direction X and opening toward the third direction Z (as shown in FIG. 2 , the plane bottom surface 17 is not shown in the figure), and the third direction Z is perpendicular to the second direction Y and the first direction X at the same time.
  • the body 10 may also be provided with a plurality of V-shaped groove areas 111b' arranged along the first direction X and opening toward the opposite direction Y' of the second direction Y (as shown in FIG. 3 , the plane bottom surface 17 is not shown in the figure. out), and/or the V-shaped groove area 112b' opening toward the direction Z' opposite to the third direction Z (as shown in FIG. 2 , the plane bottom surface 17 is not shown in the figure).
  • a V-shaped groove area 111a' facing the second direction Y and a V-shaped groove area 111b' facing the opposite direction Y' of the second direction Y are arranged opposite to form a first V-shaped groove area group 111'.
  • a V-shaped groove area 112a' facing the third direction Z can be arranged opposite to a V-shaped groove area 112b' facing the opposite direction Z' of the third direction Z, forming a second V-shaped groove area group 112' .
  • V-shaped groove side wall outer edge 18 of a first V-shaped groove area group 111' or a second V-shaped groove area group 112' can be on a reference plane perpendicular to the first direction X
  • the projection is 6-12 polygons. The beneficial effect of such setting is as described in the specific implementation manner of the first aspect of the present application.
  • the interval d between the two V-shaped grooves with opposite opening directions in the first V-shaped groove group 111' and/or the second V-shaped groove group 112' is 0.3-0.9 mm (as shown in Figure 2 and Figure 3), to ensure the bending times of the bending part 1.
  • the first V-shaped groove group 111' and the second V-shaped groove group 112' are arranged at intervals along the first direction X.
  • the maximum opening angle of the V-shaped groove area is 3.75 times the diameter of the circumscribed circle in millimeters of the outer edge 18 of the V-shaped groove side wall of the V-shaped groove area group.
  • the through holes 11 may include a working channel through hole 14 , an auxiliary channel through hole 15 and a harness channel through hole 16 .
  • the sub-hole 16a of the harness channel through hole 16 is provided with a pulling wire 16a' connecting the distal end 13 of the bending part 1 and the operating part 200 of the endoscope, and the pulling wire 16a' is used to control the The bending of the bending part 1 ; the part between two adjacent V-shaped grooves is defined as a joint 20 , and every two joints 20 are separated from each other.
  • the pulling wire 16a' passes through each condyle 20 of the bending part 1 one by one along the wire harness channel, and connects each condyle 20 together. 16a' connection to maintain contact.
  • the condyles 20 are separated from each other, and compared with the condyles 20, they are integrally connected to each other, which reduces the mutual constraints and is beneficial to the bending part 1 to achieve more Large-angle bending; and while achieving a larger bending angle, the pulling force required by the pulling wire 16a' can also be smaller.
  • a protective cover is provided on the outside of the bending part 1 of the endoscope, and the protective cover also helps to restore the shape of the bending part 1 .
  • a rib 19 extending along the first direction X is provided on the outer periphery of the body 10 of the bending part 1 .
  • it may also be a bump, a bump, etc. arranged along the first direction X, or a groove extending along the first direction X (different from the aforementioned groove 17').
  • such arrangement is beneficial to insert the bending part 1 into the protective sheath along the axial direction (ie, the first direction X) more quickly.
  • the curved portion 1 of the insertion portion of the endoscope can be integrally injection molded.
  • the material of the bending part 1 of the insertion part of the endoscope can be one of silicone rubber, TPE, TPU, PVC and PP. From the proximal end 12 of the curved part 1 to the distal end 13 of the curved part 1, the opening angle of the V-shaped groove can be set to increase sequentially.
  • the above material pair helps to strengthen the friction between the joints 20, so that when the separated joints 20 are bent, due to the interaction of the friction force between the joints 20, the pulling wire will
  • the axial pressure formed by the condyle 20 can keep the relative position of the parts in contact with each other unchanged, so the reduction can be smoothly realized.
  • the second aspect of the present application further provides an endoscope insertion part 300, including the above-mentioned bending part 1 of the endoscope insertion part.
  • the bending part 1 can also include: a protective sleeve, which is used to be sleeved on the outside of the bending part 1; a working channel pipeline placed in the working channel through hole 14, and the material of the working channel pipeline is PVC, TPE, PTFE and TPU One of them; the water pipe or air pipe placed in the through hole 15 of the auxiliary channel, the material of the water pipe or the air pipe is one of PVC, TPE, PTFE and TPU.
  • a pulling wire 16a' connecting the distal end 13 of the bending part 1 and the operating part 200 of the endoscope is provided in the through hole 16 of the wire harness channel, and the pulling wire 16a' is used to control the bending part according to the action of the operating part 200 1; the part between two adjacent V-shaped grooves is defined as a joint 20, and every two joints 20 are separated from each other.
  • the pulling wire 16a' passes through each condyle 20 of the bending part 1 one by one along the wire harness channel, and connects each condyle 20 together. 16a' connection to maintain contact.
  • the condyles 20 are separated from each other, and compared with the condyles 20, they are integrally connected to each other, which reduces the mutual constraints and is beneficial to the bending part 1 to achieve more Large-angle bending; and while achieving a larger bending angle, the pulling force required by the pulling wire 16a' can also be smaller.
  • the second aspect of the present application further provides an endoscope 100 , including the above-mentioned endoscope insertion part 300 .

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Rehabilitation Therapy (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

La présente invention concerne une partie de courbure (1) d'une partie d'insertion d'endoscope, une partie d'insertion d'endoscope (300) et un endoscope (100). La partie de courbure (1) de la partie d'insertion d'endoscope comprend un corps en forme de bande (10) s'étendant le long d'une première direction. Le corps (10) présente un profil de section transversale ayant de 6 à 12 côtés dans la première direction ; le corps (10) est pourvu de multiples trous traversants (11) s'étendant dans la première direction et s'étendant à travers le corps ; le corps (10) est pourvu de multiples rainures en V (111a) agencées le long de la première direction et s'ouvrant vers une seconde direction, la seconde direction étant perpendiculaire à la première direction.
PCT/CN2022/103683 2021-11-16 2022-07-04 Partie de courbure d'une partie d'insertion d'endoscope, partie d'insertion d'endoscope et endoscope WO2023087737A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CN202122803514.9 2021-11-16
CN202111355715.5 2021-11-16
CN202111355715.5A CN114451849A (zh) 2021-11-16 2021-11-16 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN202111354645.1A CN114504290A (zh) 2021-11-16 2021-11-16 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN202122803494.5U CN216535235U (zh) 2021-11-16 2021-11-16 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN202111354645.1 2021-11-16
CN202122803494.5 2021-11-16
CN202122803514.9U CN216535236U (zh) 2021-11-16 2021-11-16 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜

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WO2023087737A1 true WO2023087737A1 (fr) 2023-05-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109893073A (zh) * 2019-04-19 2019-06-18 广州瑞派医疗器械有限责任公司 医用蛇骨管

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000048506A1 (fr) * 1999-02-15 2000-08-24 Herrmann Ingo F Fibroscope deformable avec appareil auxiliaire ajustable
US20080287963A1 (en) * 2005-12-30 2008-11-20 Rogers Theodore W Methods and apparatus to shape flexible entry guides for minimally invasive surgery
CN102772193A (zh) * 2012-06-27 2012-11-14 杭州好克光电仪器有限公司 一种挠性电子镜
WO2020080938A2 (fr) * 2018-10-16 2020-04-23 Fortimedix Assets Ii B.V. Instrument orientable comprenant un élément tubulaire
CN114451849A (zh) * 2021-11-16 2022-05-10 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN114504290A (zh) * 2021-11-16 2022-05-17 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN216535235U (zh) * 2021-11-16 2022-05-17 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN216535236U (zh) * 2021-11-16 2022-05-17 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000048506A1 (fr) * 1999-02-15 2000-08-24 Herrmann Ingo F Fibroscope deformable avec appareil auxiliaire ajustable
US20080287963A1 (en) * 2005-12-30 2008-11-20 Rogers Theodore W Methods and apparatus to shape flexible entry guides for minimally invasive surgery
CN102772193A (zh) * 2012-06-27 2012-11-14 杭州好克光电仪器有限公司 一种挠性电子镜
WO2020080938A2 (fr) * 2018-10-16 2020-04-23 Fortimedix Assets Ii B.V. Instrument orientable comprenant un élément tubulaire
CN114451849A (zh) * 2021-11-16 2022-05-10 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN114504290A (zh) * 2021-11-16 2022-05-17 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN216535235U (zh) * 2021-11-16 2022-05-17 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜
CN216535236U (zh) * 2021-11-16 2022-05-17 杭州莱恩瑟特医疗技术有限公司 内窥镜插入部的弯曲部、内窥镜插入部及内窥镜

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109893073A (zh) * 2019-04-19 2019-06-18 广州瑞派医疗器械有限责任公司 医用蛇骨管

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