CN211324920U - Insertion tube assembly of ureteroscope - Google Patents
Insertion tube assembly of ureteroscope Download PDFInfo
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- CN211324920U CN211324920U CN201921441705.1U CN201921441705U CN211324920U CN 211324920 U CN211324920 U CN 211324920U CN 201921441705 U CN201921441705 U CN 201921441705U CN 211324920 U CN211324920 U CN 211324920U
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Abstract
The utility model relates to an insert tube assembly of ureteroscope, including main hose and traction spring subassembly structure, the traction spring subassembly structure includes the spring retainer plate and establishes two traction springs at the spring retainer plate, the spring retainer plate is established at the preceding connecting portion of main hose, still includes operating system coupling mechanism, and it includes back connection seat and fastening nut, back connection seat is connected with the back connecting portion of main hose, fastening nut suit is on the back connection seat, the outer peripheral wall of back connection seat and the outside that is located fastening nut are equipped with the constant head tank, the tip periphery of back connection seat and the outside that is located the constant head tank are equipped with the sealing washer; the inner wall of the spring fixing ring is provided with two spring mounting grooves for mounting the traction spring along the axial direction, and the main hose is designed into three insertion sections with different hardness, so that the insertion requirement of the insertion pipe is met, and the flexibility of the insertion pipe is better. The utility model discloses with operation module sealing connection, and can not rotate after the assembly.
Description
Technical Field
The utility model relates to an insert tube assembly, concretely relates to insert tube assembly of ureteroscope belongs to medical instrument technical field.
Background
The insertion tube assembly of the ureteroscope is one of the main components of the ureteroscope. The ureter endoscope can reach the upper section of the ureter and even be inserted into the kidney, can treat the upper section of urinary system calculus diseases without operation, and can be easily completed. Meanwhile, the utility model can be used for examination and diagnosis of cystitis, urethritis, urinary tract infection, vesical calculus, urethral calculus, bladder tumor, urethral tumor and other symptoms.
The traditional insertion tube of the ureteral endoscope is an insertion tube of a stainless steel tube hard tube, is a rigid and inflexible insertion tube, can damage the mucosa of an inner cavity of a urinary system in the using process, and can be inserted into a bladder, a ureter and other defects carelessly.
In order to overcome the defects of the traditional rigid insertion tube, the rigid insertion tube is improved into the soft ureteral endoscope, the insertion tube needs to be twisted and rotated during insertion or examination and diagnosis, the fixing structure of the joint of the operation part main body and the insertion tube is unreliable, and the looseness occurs, and in a serious case, the insertion performance of an insertion tube assembly of the soft ureteral endoscope in an examination process can be influenced, or the rotation or the deviation of the position of an observed image can be influenced.
At present, the ureteral endoscope belongs to a semi-sealed medical soft endoscope, namely, the head part of an insertion tube assembly and the whole insertion part of a bending part are sealed structures, all structures of the tail part of the insertion tube backwards are unsealed structures, only the front part of a complete endoscope can be disinfected, and unsealed structure parts cannot enter disinfectant for disinfection and sterilization, so that the rear structure cannot be disinfected, and the problem of cross infection is easily caused.
In the prior art, a traction spring pipe is directly welded on the hole wall of an inner hole of a spring fixing ring, and firstly, the inner hole of the spring fixing ring is small, so that the welding is difficult, the labor and the time are wasted, and the efficiency is low; secondly, four traction spring tubes are prone to being inclined after being welded, the axes of the traction spring tubes are not parallel to the central axis of the spring fixing ring, so that the traction spring tubes can occupy the spatial position in the hole diameter, assembly of related parts of an original design device inserted into the hole is affected, for example, a clamp pipe is not inserted into a corresponding hole in the spring fixing ring, and thirdly, the errors of form and position tolerance of different axes are large due to the fact that the axes of the spring tubes and the axes of the traction steel wire ropes, when the endoscope operates a bent angle to traction the steel wire ropes, the inclined spring holes and the steel wire ropes have large friction force, and the steel wire ropes are prone to being worn or broken.
Disclosure of Invention
The utility model aims at: the insertion tube assembly of the ureteroscope is convenient for intubation and control, and can not rotate after being assembled with an operation assembly, so that the sealing performance of the connection between the operation assembly and the insertion tube assembly is ensured.
In order to achieve the above purpose, the technical scheme of the utility model is that: an insertion tube assembly for a ureteroscope, comprising:
the main hose comprises a spring pipe and a woven mesh pipe, the woven mesh pipe is sleeved on the periphery of the spring pipe, the main hose comprises a front connecting part, a middle part and a rear connecting part, the spring pipe and the woven mesh pipe of the front connecting part and the rear connecting part are welded into a whole, a medical polyurethane coating is arranged on the periphery of the woven mesh pipe of the middle part, and a medical transparent polyurethane film is arranged on the periphery of the medical polyurethane coating;
traction spring subassembly structure, traction spring subassembly structure includes spring retainer plate and two traction spring, the spring retainer plate is established at the preceding connecting portion of main hose, and two traction spring's one end is established on the spring retainer plate to in two traction spring all inserted the spring pipe, its innovation point lies in:
the rear connecting seat is fixedly connected with the rear connecting part of the main hose, the fastening nut is sleeved on the rear connecting seat, an axial positioning groove is formed in the outer peripheral wall of the rear connecting seat and located on the outer side of the fastening nut, the two traction springs penetrate out of the rear connecting seat, and a sealing ring is arranged on the outer periphery of the end part of the rear connecting seat and located on the outer side of the axial positioning groove;
the traction spring assembly structure further comprises a front connecting seat, the front connecting seat is fixedly connected with a front connecting part of the main hose, the spring fixing ring is fixedly connected with the front connecting seat, two spring mounting grooves are formed in the inner wall of the spring fixing ring and along the axial direction of the spring fixing ring, and one ends of the two traction springs are respectively arranged in the corresponding spring mounting grooves;
the middle part of the main hose is divided into three sections along the length of the main hose, and the pitch P of the spring pipe of the first section11The pitch of the second section of the spring tube is 1.8 mm-2.6 mm, and the pitch P of the second section of the spring tube is12The pitch of the third section of the spring tube is 2.3 mm-3.1 mm, and the pitch P of the third section of the spring tube13The pitch of (A) is 2.9 mm-3.5 mm, and P11＜P12＜P13，
Shore A hardness of the medical polyurethane coating of the first section131-35A, and the Shore hardness A of the medical polyurethane coating of the second section250-56A, and the Shore hardness A of the medical polyurethane coating of the third section368 to 72A, and A1＜A2＜A3，
The outer diameter phi of the woven net pipe is 3.6 mm-6 mm, the weaving angle beta of the woven net pipe is 38-42 degrees, and the pitch H of the cross point of the woven net pipe is 2 mm-2.8 mm.
In the above technical scheme, preceding connection base is including each other spring retainer plate linkage segment and preceding linkage segment as an organic whole, preceding linkage segment passes through soldering tin and the preceding connecting portion fixed connection of main hose, and the periphery of preceding linkage segment is equipped with medical transparent polyurethane membrane, the spring retainer plate suit is in the periphery of spring retainer plate linkage segment and through soldering tin and its fixed connection.
In the above technical solution, the inner hole of the spring fixing ring is provided with an accessory mounting channel.
In the above technical scheme, the rear connection seat has a main hose connection part and an operating system connection part which are integrated with each other, the main hose connection part is fixedly connected with the rear connection part of the main hose, and the periphery of the operating system connection part is provided with a fastening nut and an axial positioning groove.
In the above technical scheme, be equipped with the sealing washer mounting groove on the periphery wall of operating system connecting portion, and the sealing washer mounting groove is located the outside of constant head tank, be equipped with the sealing washer in the sealing washer mounting groove.
In the above technical solution, the operating system connecting portion has a taper hole and a stepped hole which are coaxially arranged, and the stepped hole is located inside the taper hole.
In the above technical scheme, the spring retainer plate includes each other as an organic whole and has the traction spring fixed section and the preceding joint chair linkage segment of coaxial line, be equipped with two spring mounting grooves that separately arrange on the inner wall of traction spring fixed section and along its axial direction, preceding joint chair linkage segment suit is in the spring retainer plate linkage segment periphery of preceding joint chair, and the periphery of preceding joint chair linkage segment is equipped with medical transparent polyurethane membrane.
In the technical scheme, the spring fixing ring and the front connecting seat are respectively provided with a front soldering tin injection hole, and the spring fixing ring, the front connecting seat and the front connecting part of the main hose are welded into a whole through soldering tin; and a rear soldering tin injection hole is formed in the rear connecting seat, and the rear connecting seat is welded with the rear connecting part of the main hose into a whole through soldering tin.
The utility model discloses the positive effect who has is: after the insertion tube assembly of the ureteroscope of the utility model is adopted, the ureteroscope also comprises an operation system connecting mechanism, the operation system connecting mechanism comprises a rear connecting seat and a fastening nut, the rear connecting seat is fixedly connected with the rear connecting part of the main hose, the fastening nut is sleeved on the rear connecting seat, an axial positioning groove is arranged on the outer peripheral wall of the rear connecting seat and positioned outside the fastening nut, and two traction springs penetrate out of the rear connecting seat, so that an operation part connecting cylinder of the operation assembly is connected with the rear connecting seat, a radial screw on the operation part connecting cylinder is firstly rotated to be screwed into the positioning groove on the rear connecting seat, then the fastening nut is screwed, the operation part connecting cylinder and the rear connecting seat are tightly fixed into a whole, thus the loosening of the joint of the rear connecting seat and the operation part connecting cylinder can be effectively prevented, and the phenomenon of left-right rotation of the operation part connecting cylinder can not occur, the reliability of connection of the two is ensured, so that the bending assembly can not deviate in the bending process, the accuracy of inserting the colonoscope is improved, and the pain of a detected person is reduced;
the sealing ring is arranged on the periphery of the end part of the rear connecting seat and positioned on the outer side of the axial positioning groove, so that the rear connecting seat is connected with the operation part connecting cylinder of the operation system in a sealing way through the sealing ring, and the structure of the backward rear connecting part of the insertion tube assembly is also a sealing structure, so that the rear connecting part can be completely soaked in the disinfectant for sterilization and disinfection, on one hand, the cross infection problem of the medical endoscope can be effectively prevented, on the other hand, external liquid, water vapor and the like can be effectively prevented from entering the endoscope, the aging of internal electrical components is prevented, and the service life of medical equipment is prolonged;
because the traction spring component structure also comprises a front connecting seat, the front connecting seat is fixedly connected with the front connecting part of the main hose, the spring fixing ring is fixedly connected with the front connecting seat, two spring mounting grooves are arranged on the inner wall of the spring fixing ring and along the axial direction of the spring fixing ring, one ends of the two traction springs are respectively arranged in the corresponding spring mounting grooves, because the outer diameter of the main hose of the utility model is thinner than the outer diameter of the main hose of the colonoscope, the bending component connected with the traction spring component can only bend in two directions, the effects of 220 degrees of the upper bent angle bend and 100 degrees of the lower bent angle bend of the ureteral endoscope can be realized, diseases in urinary systems such as bladder and the like can be observed and diagnosed in a wider range through the bent angle of the front end, in addition, 2 traction spring tubes are adopted, 2 spring tubes are reduced, and the space for inserting the inner diameter of the tubes is mainly increased, the assembly of the components of contents such as the clamp pipe and the like is facilitated, and the two traction springs are respectively welded in the spring mounting grooves corresponding to the spring fixing rings, so that the welding is facilitated, the time and labor are saved, the assembly efficiency is improved, the springs are subjected to positioning welding, the springs are prevented from being inclined after being welded, and the welding quality and the reliability are ensured;
and the middle part of the main hose is divided into three sections along the length of the main hose, and the pitch P of the spring pipe of the first section11The pitch of the second section of the spring tube is 1.8 mm-2.6 mm, and the pitch P of the second section of the spring tube is12The pitch of the third section of the spring tube is 2.3 mm-3.1 mm, and the pitch P of the third section of the spring tube13The pitch of (A) is 2.9 mm-3.5 mm, and P11＜P12＜P13，
Shore A hardness of the medical polyurethane coating of the first section131-35A, and the Shore hardness A of the medical polyurethane coating of the second section250-56A, and the Shore hardness A of the medical polyurethane coating of the third section368 to 72A, and A1＜A2＜A3，
The outer diameter phi of the woven net tube is 3.6 mm-6 mm, the weaving angle beta of the woven net tube is 38-42 degrees, the pitch H of the cross point of the woven net tube is 2 mm-2.8 mm, in order to prevent the rigid insertion tube from damaging the mucosa of the urinary system in the process of being inserted into the body of a patient and even possibly breaking the bladder or the ureter in the process of being inserted during examination and diagnosis, the utility model discloses design the main hose into three sections of insertion sections with different hardness, so that the hardness requirement of the insertion tube is met, the flexibility of the insertion tube is better, the insertion performance of the clinical use inserted into the human body is better, the pain of the examined patient is further relieved, when the front touches the inner cavity surface of the bladder, even if the touch force is not large, the camera at the front end of the main hose is naturally bent along with the 1 st section of the insertion tube, and the inner cavities in the urinary systems such as the bladder can.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the main hose and the traction spring assembly according to the present invention;
FIG. 3 is a schematic view of the main hose of the present invention connected to the operating system connection mechanism;
fig. 4 is a left side view schematically illustrating the spring fixing ring of the present invention;
FIG. 5 is a schematic view of the rear connection seat of the present invention;
FIG. 6 is a schematic view of the main hose of the present invention;
FIG. 7 is a schematic structural diagram of the woven mesh tube of FIG. 6;
fig. 8 is a schematic structural view of the connection between the rear connection seat and the operation portion connection tube of the operation system according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, but is not limited thereto.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, a ureteroscope insertion tube assembly, comprising:
the main hose 1 comprises a spring pipe 11 and a woven net pipe 12, the woven net pipe 12 is sleeved on the periphery of the spring pipe 11, the main hose 1 comprises a front connecting part, a middle part and a rear connecting part, the spring pipe 11 and the woven net pipe 12 of the front connecting part and the rear connecting part are welded into a whole, a medical polyurethane coating 13 is arranged on the periphery of the woven net pipe 12 of the middle part, and a medical transparent polyurethane film 14 is arranged on the periphery of the medical polyurethane coating 13;
a traction spring assembly structure 2, wherein the traction spring assembly structure 2 comprises a spring fixing ring 21 and two traction springs 22, the spring fixing ring 21 is arranged at the front connecting part of the main hose 1, one ends of the two traction springs 22 are arranged on the spring fixing ring 21, and the two traction springs 22 are inserted into the spring pipe 11,
the connecting device further comprises an operating system connecting mechanism 3, the operating system connecting mechanism 3 comprises a rear connecting seat 31 and a fastening nut 32, the rear connecting seat 31 is fixedly connected with a rear connecting part of the main hose 1, the fastening nut 32 is sleeved on the rear connecting seat 31, an axial positioning groove 311 is formed in the outer peripheral wall of the rear connecting seat 31 and located on the outer side of the fastening nut 32, the two traction springs 22 penetrate out of the rear connecting seat 31, a sealing ring 33 is arranged on the outer periphery of the end part of the rear connecting seat 31 and located on the outer side of the axial positioning groove 311, and the sealing ring 33 can be an annular sealing ring with a circular cross section or an annular sealing ring with a rectangular cross section;
the traction spring assembly structure 2 further comprises a front connecting seat 23, the front connecting seat 23 is fixedly connected with a front connecting part of the main hose 1, the spring fixing ring 21 is fixedly connected with the front connecting seat 23, two spring mounting grooves 211 are formed in the inner wall of the spring fixing ring 21 and along the axial direction of the spring fixing ring, and one end of each of the two traction springs 22 is arranged in the corresponding spring mounting groove 211;
the middle part of the main hose 1 is divided into three sections along the length thereof, and the screw pitch P of the spring pipe of the first section11The pitch of the second section of the spring tube is 1.8 mm-2.6 mm, and the pitch P of the second section of the spring tube is12The pitch of the third section of the spring tube is 2.3 mm-3.1 mm, and the pitch P of the third section of the spring tube13The pitch of (A) is 2.9 mm-3.5 mm, and P11＜P12＜P13，
Shore A hardness of the medical polyurethane coating of the first section131-35A, and the Shore hardness A of the medical polyurethane coating of the second section250-56A, and the Shore hardness A of the medical polyurethane coating of the third section368 to 72A, and A1＜A2＜A3，
The outer diameter phi of the woven mesh pipe 12 is 3.6 mm-6 mm, the weaving angle beta of the woven mesh pipe 12 is 38-42 degrees, and the pitch H of the cross points of the woven mesh pipe 12 is 2 mm-2.8 mm.
The ureteroscope of the utility model is divided into a long scope and a short scope, and the length of the long scope of the ureteroscope is 400 mm-680 mm; and the length of the short endoscope of the ureteral endoscope is 330-460 mm. The spring pipe 11 of main hose 1 is left-handed spring pipe or right spiral spring pipe, the surface of medical polyurethane coating 13 is equipped with length mark line and length mark size, and medical transparent polyurethane film 14 is for protecting the seal of a government organization in old china coating.
As shown in fig. 1 and 2, in order to conveniently and fixedly connect the spring fixing ring with the front connection portion of the main hose, the front connection seat 23 includes a spring fixing ring connection section 231 and a front connection section 232 which are integrated with each other, the front connection section 232 is fixedly connected with the front connection portion of the main hose 1 through soldering tin, a medical transparent polyurethane film 14 is arranged on the periphery of the front connection section 232, and the spring fixing ring 21 is sleeved on the periphery of the spring fixing ring connection section 231 and is fixedly connected with the spring fixing ring connection section through soldering tin.
As shown in fig. 4, the inner bore of the spring retainer ring 21 has a fitting mounting passage 212 for facilitating assembly of the contents such as the jaw tube. For example, the fitting attachment passage 212 of the spring fixing ring 21 is an attachment passage for inserting a member such as a forceps tube, a camera cable, a light guide bundle, a water pipe, or the like.
As shown in fig. 5, in order to make the utility model discloses the structure is more reasonable, makes things convenient for main hose to pass through the back connection seat to be connected with operating system, back connection seat 31 has main hose connecting portion 312 and operating system connecting portion 313 as an organic whole each other, main hose connecting portion 312 and the back connecting portion fixed connection of main hose 1, operating system connecting portion 313's periphery is equipped with fastening nut 32 and axial positioning groove 311.
As shown in fig. 5, in order to facilitate the installation of the sealing ring, a sealing ring installation groove 314 is formed in the outer circumferential wall of the operating system connecting portion 313, the sealing ring installation groove 314 is located outside the positioning groove 311, and the sealing ring 33 is disposed in the sealing ring installation groove 314. In order to make the utility model form a sealing connection structure with the operation part connecting cylinder of the operation system, the internal bacteria can be effectively prevented from overflowing after the medical endoscope is disinfected, and the cross infection is prevented.
As shown in fig. 5, the advantages of the taper hole are: when the traction spring tube is fixed with the operation part at the rear part, the spring tube needs to be outwards angled to be conveniently connected with the relevant structure of the operation part, so the traction spring tube is designed into a tapered hole. The step hole design has the advantage that when the woven mesh tube at one end of the hose assembly is connected and assembled with the hole of the step hole by soldering or structural adhesive bonding, the operating system connecting part 313 has a conical hole 3131 and a step hole 3132 which are coaxially arranged, and the step hole 3132 is positioned at the inner side of the conical hole 3131.
As shown in fig. 2, in order to connect the spring fixing ring with the front connecting seat conveniently, the structure is more reasonable, the spring fixing ring 21 includes a traction spring fixing section 213 and a front connecting seat connecting section 214 which are mutually integrated and have a coaxial line, two spring mounting grooves 211 which are separately arranged are arranged on the inner wall of the traction spring fixing section 213 and along the axial direction thereof, the front connecting seat connecting section 214 is sleeved on the periphery of the spring fixing ring connecting section 231 of the front connecting seat 23, and the periphery of the front connecting seat connecting section 214 is provided with a medical transparent polyurethane film 14.
In order to weld the spring fixing ring, the front connecting seat and the front connecting part of the main hose into a whole, the spring fixing ring 21 and the front connecting seat 23 are both provided with front soldering tin injection holes, and the spring fixing ring 21, the front connecting seat 23 and the front connecting part of the main hose 1 are welded into a whole through soldering tin; in order to weld the rear connecting seat and the front connecting part of the main hose into a whole, a rear soldering tin injection hole is formed in the rear connecting seat 31, and the rear connecting seat 31 is welded with the rear connecting part of the main hose 1 into a whole through soldering tin. The concrete welding process, the soldering tin is injected into the front soldering tin injection hole and the back soldering tin injection hole, and the rapid positioning welding is convenient.
As shown in fig. 8, the end of the rear mount of the insert pipe assembly is inserted through the operation portion connecting cylinder hole to the left, and is screwed down on the end face of the operation portion connecting cylinder 4 by a fastening nut. In order to ensure that the insertion tube assembly cannot rotate, the utility model discloses it has the little screw hole of standard to be used for adorning awl end holding screw 5 still to design on operation portion connecting cylinder 4. The position where the standard small screw hole is designed in the operation section connecting cylinder 4 is a position on the upright center line of the operation section, that is, the endoscope (instrument). The cone end set screw 5 is screwed and fixed in the positioning groove of the rear connecting seat 31.
The utility model discloses divide into the different soft or hard degrees of three-section with it, can obtain the main hose of the ureteroscope of following specific embodiment 1, embodiment 2, embodiment 3 according to table 1:
TABLE 1
The utility model has the advantages that: the operation part connecting cylinder of the operation assembly is connected with the rear connecting seat, the radial screw on the operation part connecting cylinder is firstly rotated to be screwed into the positioning groove on the rear connecting seat, and then the fastening nut is screwed, so that the operation part connecting cylinder and the rear connecting seat are fastened into a whole, thus the joint of the rear connecting seat and the operation part connecting cylinder can be effectively prevented from loosening, the operation part connecting cylinder can not rotate left and right, the reliability of connection of the operation part connecting cylinder and the rear connecting seat is ensured, further, the bending assembly can not deviate in the bending process, the inserting accuracy of the colonoscope is improved, and the pain of a detected person is reduced;
the rear connecting seat of the utility model is connected with the operation part connecting cylinder of the operation system in a sealing way through the sealing ring, so that the backward structure of the rear connecting part of the insertion tube assembly is also a sealing structure, and the insertion tube assembly can be completely soaked in disinfectant for sterilization and disinfection, on one hand, the cross infection problem of the medical endoscope can be effectively prevented, on the other hand, external liquid or vapor and the like can be effectively prevented from entering the endoscope, the aging of internal electrical elements is prevented, and the service life of medical equipment is prolonged;
the utility model adopts 2 traction spring tubes, reduces 2 spring tubes, on one hand, mainly aims at increasing the space of the inner diameter of the insertion tube, and is convenient for assembling the parts of the internal matters such as the forceps tube, on the other hand, the bending part connected with the traction spring assembly can bend in two directions, for example, after the device of the traction spring tube assembly of the utility model is adopted, the upper bending angle of the ureteral endoscope can be bent to 220 degrees and the lower bending angle can be bent to 100 degrees through the steel wire rope in the traction spring tube (the steel wire rope is the part of the bending part of the front end of the traction endoscope), diseases in urinary systems such as bladder and the like can be observed and diagnosed in a larger range through the bending angle of the front end, two traction springs are respectively welded in the spring mounting grooves corresponding to the spring fixing rings, thus, not only the welding is convenient, the time and labor are saved, the assembly efficiency is improved, and the positioning welding is implemented to the, the spring can be ensured not to be inclined after being welded, and the welding quality and reliability are ensured;
the utility model discloses be the different soft or hard degree of three-section insertion section with main hose design, the hardness requirement of insertion tube has not only been satisfied like this, it is better to make its compliance performance again, clinical use inserts human insertion performance better, this misery of being examined has further been alleviateed simultaneously, when openly touching the bladder cavity face, even the strength of touching is not big, the camera of its front end is also the natural bending along with the 1 st section of insertion tube, can not insert the interior cavity in the urinary system such as bladder.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. An insertion tube assembly for a ureteroscope, comprising:
the hose comprises a main hose (1), wherein the main hose (1) comprises a spring pipe (11) and a woven net pipe (12), the woven net pipe (12) is sleeved on the periphery of the spring pipe (11), the main hose (1) comprises a front connecting part, a middle part and a rear connecting part, the spring pipes (11) and the woven net pipes (12) of the front connecting part and the rear connecting part are welded into a whole, a medical polyurethane coating (13) is arranged on the periphery of the woven net pipe (12) of the middle part, and a medical transparent polyurethane film (14) is arranged on the periphery of the medical polyurethane coating (13);
traction spring subassembly structure (2), traction spring subassembly structure (2) include spring retainer plate (21) and two traction spring (22), spring retainer plate (21) are established at the preceding connecting portion of main hose (1), and the one end of two traction spring (22) is established on spring retainer plate (21) to in two traction spring (22) all inserted spring pipe (11), its characterized in that:
the connecting mechanism of the operating system comprises a rear connecting seat (31) and a fastening nut (32), the rear connecting seat (31) is fixedly connected with a rear connecting part of the main hose (1), the fastening nut (32) is sleeved on the rear connecting seat (31), an axial positioning groove (311) is formed in the outer side of the fastening nut (32) and on the outer peripheral wall of the rear connecting seat (31), the two traction springs (22) penetrate out of the rear connecting seat (31), and a sealing ring (33) is arranged on the outer periphery of the end part of the rear connecting seat (31) and on the outer side of the axial positioning groove (311);
the traction spring assembly structure (2) further comprises a front connecting seat (23), the front connecting seat (23) is fixedly connected with a front connecting part of the main hose (1), the spring fixing ring (21) is fixedly connected with the front connecting seat (23), two spring mounting grooves (211) are formed in the inner wall of the spring fixing ring (21) and along the axial direction of the spring fixing ring, and one ends of the two traction springs (22) are respectively arranged in the corresponding spring mounting grooves (211);
the middle part of the main hose (1) is divided into three sections along the length thereof, and the pitch P of the spring pipe of the first section11The pitch of the second section of the spring tube is 1.8 mm-2.6 mm, and the pitch P of the second section of the spring tube is12The pitch of the third section of the spring tube is 2.3 mm-3.1 mm, and the pitch P of the third section of the spring tube13The pitch of (A) is 2.9 mm-3.5 mm, and P11＜P12＜P13，
Shore A hardness of the medical polyurethane coating of the first section131-35A, and the Shore hardness A of the medical polyurethane coating of the second section250-56A, and the Shore hardness A of the medical polyurethane coating of the third section368 to 72A, and A1＜A2＜A3，
The outer diameter phi of the woven mesh pipe (12) is 3.6 mm-6 mm, the weaving angle beta of the woven mesh pipe (12) is 38-42 degrees, and the pitch H of the cross points of the woven mesh pipe (12) is 2 mm-2.8 mm.
2. The ureteroscope insertion tube assembly of claim 1, wherein: preceding connection seat (23) are including each other spring retainer plate linkage segment (231) and preceding linkage segment (232) as an organic whole, preceding linkage segment (232) are through the preceding connecting portion fixed connection of soldering tin with main hose (1), and the periphery of preceding linkage segment (232) is equipped with medical transparent polyurethane membrane (14), spring retainer plate (21) suit is in the periphery of spring retainer plate linkage segment (231) and through soldering tin and its fixed connection.
3. The ureteroscope insertion tube assembly of claim 1, wherein: the inner bore of the spring retaining ring (21) has a fitting mounting channel (212).
4. The ureteroscope insertion tube assembly of claim 1, wherein: the rear connecting seat (31) is provided with a main hose connecting part (312) and an operating system connecting part (313) which are integrated with each other, the main hose connecting part (312) is fixedly connected with the rear connecting part of the main hose (1), and the periphery of the operating system connecting part (313) is provided with a fastening nut (32) and an axial positioning groove (311).
5. The ureteroscope insertion tube assembly of claim 4, wherein: be equipped with sealing washer mounting groove (314) on the periphery wall of operating system connecting portion (313), and sealing washer mounting groove (314) are located the outside of constant head tank (311), be equipped with sealing washer (33) in sealing washer mounting groove (314).
6. The ureteroscope insertion tube assembly of claim 4, wherein: the operating system connecting part (313) has a taper hole (3131) and a stepped hole (3132) which are coaxially arranged, and the stepped hole (3132) is located inside the taper hole (3131).
7. The ureteroscope insertion tube assembly of claim 2, wherein: spring retainer plate (21) are including each other as an organic whole and have coaxial traction spring fixed section (213) and preceding joint chair linkage segment (214), be equipped with two spring mounting groove (211) that separately arrange on the inner wall of traction spring fixed section (213) and along its axial direction, preceding joint chair linkage segment (214) suit is in spring retainer plate linkage segment (231) periphery of preceding joint chair (23), and the periphery of preceding joint chair linkage segment (214) is equipped with medical transparent polyurethane membrane (14).
8. The ureteroscope insertion tube assembly of claim 1, wherein: the spring fixing ring (21) and the front connecting seat (23) are respectively provided with a front soldering tin injection hole, and the spring fixing ring (21), the front connecting seat (23) and the front connecting part of the main hose (1) are welded into a whole through soldering tin; and a rear soldering tin injection hole is formed in the rear connecting seat (31), and the rear connecting seat (31) is welded with the rear connecting part of the main hose (1) into a whole through soldering tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441705.1U CN211324920U (en) | 2019-08-30 | 2019-08-30 | Insertion tube assembly of ureteroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110584583A (en) * | 2019-08-30 | 2019-12-20 | 常州延顺光电科技有限公司 | Insertion tube assembly of ureteroscope |
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