CN211324922U - Insertion tube assembly of colonoscope - Google Patents
Insertion tube assembly of colonoscope Download PDFInfo
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- CN211324922U CN211324922U CN201921441621.8U CN201921441621U CN211324922U CN 211324922 U CN211324922 U CN 211324922U CN 201921441621 U CN201921441621 U CN 201921441621U CN 211324922 U CN211324922 U CN 211324922U
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Abstract
The utility model relates to an insert tube assembly of colonoscope, include: a main hose including a front connection portion, an intermediate portion, and a rear connection portion; traction spring subassembly structure, traction spring subassembly structure includes spring retainer plate and four traction spring, the spring retainer plate is established at the preceding connecting portion of main hose, and the one end of four springs is established on the spring retainer plate to four springs insert in the spiral spring intraductal, and its innovation point lies in: still include operating system coupling mechanism, operating system coupling mechanism includes back connection seat and fastening nut, the back connection seat is with the back connecting portion fixed connection of main hose, the fastening nut suit is on the connection seat of back, the outside that is located fastening nut on the periphery wall of back connecting seat is equipped with the constant head tank, and four springs are all worn out outside the connection seat of back. The utility model discloses can not appear rotatoryly after joining in marriage the dress with the operating element to and guarantee that crooked subassembly can not appear squinting in crooked process.
Description
Technical Field
The utility model relates to an insert tube assembly, concretely relates to insert tube assembly of colonoscope belongs to medical instrument technical field.
Background
Colonoscopy is not only an important tool for diagnosing diseases of the large intestine (and sigmoid colon) and the terminal ileum, but also can be used for treating diseases of the large intestine (and sigmoid colon), the ileum and other intestinal tracts, such as the removal of intestinal polyps of the large intestine (and sigmoid colon), the ileum and other intestinal tracts, the hemostasis of intestinal bleeding of the large intestine (and sigmoid colon), the intestinal torsion reduction, the treatment of intestinal pseudo-obstruction, the expansion of benign stricture of the large intestine orifice, the anastomosis of the blind intestine and the like.
Colonoscopes are generally constructed from a cannula assembly, a bending assembly, an operating assembly, and a camera, graphics processor, etc. as major components. The front end of the insertion tube assembly is connected with the bending assembly, the rear end of the insertion tube assembly is connected with the operating assembly, a lens is arranged at the end part of the bending assembly, and the graphic processor is assembled with the operating assembly. In the prior art, after the rear end of the insertion tube assembly is connected with the operation part connecting cylinder of the operation assembly, the loosening of the joint of the insertion tube and the left-right rotation phenomenon easily occur, so that the bending assembly deviates in the bending process, the insertion performance of the colonoscope is seriously influenced, the pain of an examinee is increased, and medical faults occur in serious cases.
Disclosure of Invention
The utility model aims at: an insertion tube assembly for a colonoscope is provided which does not rotate after it has been assembled with an operating assembly and which ensures that the bending assembly does not shift during bending.
In order to achieve the above purpose, the technical scheme of the utility model is that: an insertion tube assembly for a colonoscope, comprising:
the main hose comprises an outer spiral spring pipe, an inner spiral spring pipe and a woven net pipe, wherein the inner spiral spring pipe is arranged in the outer spiral spring pipe, the woven net pipe is sleeved on the periphery of the outer spiral spring pipe, the main hose comprises a front connecting part, a middle part and a rear connecting part, the outer spiral spring pipe, the inner spiral spring pipe and the woven net 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 net 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 four traction spring, the spring retainer plate is established at the preceding connecting portion of main hose, and four traction spring's one end is all established on the spring retainer plate to four traction spring insert in the coil spring intraductal, its innovation point lies in:
still include operating system coupling mechanism, operating system coupling mechanism includes back connection seat and fastening nut, the back connecting portion fixed connection of back connection seat and main hose, the fastening nut suit is on the connection seat of back, the outside that is located fastening nut on the periphery wall of back connection seat is equipped with the constant head tank, and four traction spring all wear out the back connection seat outside.
In the above technical scheme, the periphery of the end part of the rear connecting seat is provided with the sealing ring outside the positioning groove.
In the above technical scheme, the traction spring assembly structure further comprises a front connection seat, the front connection seat comprises a spring fixing ring connection section and a front connection section which are integrated with each other, the front connection section is fixedly connected with the front connection part of the main hose, a medical transparent polyurethane film is arranged on the periphery of the front connection section, and the spring fixing ring is sleeved on the periphery of the spring fixing ring connection section and is fixedly connected with the spring fixing ring connection section.
In the above technical scheme, four spring mounting grooves which are separately arranged 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 four traction springs are respectively arranged in the corresponding spring mounting grooves.
In the technical scheme, the inner hole of the spring fixing ring is provided with a clamping pipe installation channel, an included angle formed between the first spring installation groove and the second spring installation groove which are positioned on two sides of the clamping pipe installation channel and the central line of the inner hole of the spring fixing ring is 98-102 degrees, and the other two spring installation grooves are uniformly distributed on the inner wall of the spring fixing ring outside the clamping pipe installation 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 a fastening nut and a positioning groove are arranged on the periphery of the operating system connection part.
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 scheme, the total number of the positioning grooves in the peripheral wall of the rear connecting seat is a multiple of 4.
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 solution, the middle part of the main hose is divided into five sections along the length thereof, and the pitch P of the outer helical spring tube of the first section is11The pitch of the second section of the outer helical spring pipe is 3 mm-3.9 mm, and the pitch P of the second section of the outer helical spring pipe12The pitch of the third section of the outer spiral spring pipe is 3.5 mm-4.1 mm, and the pitch P of the third section of the outer spiral spring pipe13The pitch of the fourth section of the outer spiral spring tube is 3.7 mm-4.4 mm, and the pitch P of the fourth section of the outer spiral spring tube14The pitch of the spiral spring is 4.1 mm-4.5 mm, and the pitch P of the external spiral spring pipe of the fifth section15The pitch of (A) is 4.3 mm-5.0 mm, and P11＜P12＜P13＜P14＜P15，
Pitch P of the first section of the inner helical spring tube21The pitch of the second section of the inner spiral spring pipe is 3 mm-3.9 mm, and the pitch P of the second section of the inner spiral spring pipe is22The pitch of the third section is 3.5 mm-4.1 mm, and the pitch P of the third section of the inner spiral spring pipe23The pitch of the inner spiral spring tube is 3.7 mm-4.4 mm, and the pitch P of the inner spiral spring tube of the fourth section24The screw pitch of the fifth section of the inner spiral spring pipe is 4.1 mm-4.5 mm25The pitch of (A) is 4.3 mm-5.0 mm, and P21＜P22＜P23＜P24＜P25，
Shore A hardness of the medical polyurethane coating of the first section131-38A, and the Shore hardness A of the medical polyurethane coating of the second section240-49A, and the Shore hardness A of the medical polyurethane coating of the third section350-58A, and the Shore hardness A of the medical polyurethane coating of the fourth section468-86A, and the Shore hardness A of the medical polyurethane coating of the fifth section5Is 89 to 95A, and A1＜A2＜A3＜A4＜A5，
The outer diameter phi of the woven mesh pipe is 11 mm-13 mm, the weaving angle beta of the woven mesh pipe is 30-40 degrees, and the pitch H of the cross point of the woven mesh pipe is 2.0 mm-3.8 mm.
The utility model discloses the positive effect who has is: after the insertion tube assembly of the colonoscope is adopted, the colonoscope also comprises an operating system connecting mechanism, the operating 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, a positioning groove is arranged on the outer peripheral wall of the rear connecting seat and positioned outside the fastening nut, and four traction springs all penetrate out of the rear connecting seat;
during the use, be connected the operation portion connecting cylinder of operation subassembly with the back connection seat, it is rotatory earlier in radial screw on the operation portion connecting cylinder makes it twist in the constant head tank on the back connection seat, screw up fastening nut again for operation portion connecting cylinder is tightly decided as an organic whole with the back connection seat, can prevent effectively like this that back connection seat from appearing becoming flexible with the joint department of operation portion connecting cylinder, and operation portion connecting cylinder can not appear controlling pivoted phenomenon, ensure the reliability of both connections, and then realized that crooked subassembly can not appear the skew in the bending process, improve colonoscope male accuracy nature, the person's of examinee's misery has been reduced.
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 schematic structural view of the front connecting seat of the present invention;
FIG. 5 is a schematic view of the rear connection seat of the present invention;
fig. 6 is a left side view schematically illustrating the spring fixing ring according to the present invention;
FIG. 7 is a schematic structural view of the main hose of the present invention;
FIG. 8 is a schematic structural diagram of the woven mesh tube of FIG. 7;
fig. 9 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, 9, an insertion tube assembly for a colonoscope comprising:
the hose comprises a main hose 1, wherein the main hose 1 comprises an outer spiral spring pipe 11, an inner spiral spring pipe 12 and a woven net pipe 13, the inner spiral spring pipe 12 is arranged in the outer spiral spring pipe 11, the woven net pipe 13 is sleeved on the periphery of the outer spiral spring pipe 11, the main hose 1 comprises a front connecting part, a middle part and a rear connecting part, the outer spiral spring pipe 11, the inner spiral spring pipe 12 and the woven net pipe 13 of the front connecting part and the rear connecting part are welded into a whole, a medical polyurethane coating 14 is arranged on the periphery of the woven net pipe 13 of the middle part, and a medical transparent polyurethane film 15 is arranged on the periphery of the medical polyurethane coating 14;
a traction spring assembly structure 2, wherein the traction spring assembly structure 2 comprises a spring fixing ring 21 and four traction springs 22, the spring fixing ring 21 is arranged at the front connecting part of the main hose 1, one ends of the four traction springs 22 are arranged on the spring fixing ring 21, and the four traction springs 22 are inserted into the inner spiral spring tube 12,
still include operating system coupling mechanism 3, operating system coupling mechanism 3 includes back connection seat 31 and fastening nut 32, back connection seat 31 and main hose 1's back connecting portion fixed connection, fastening nut 32 suit is on back connection seat 31, the outside that is located fastening nut 32 on the periphery wall of back connection seat 31 is equipped with constant head tank 311, and four traction spring 22 are all worn out outside back connection seat 31.
The scope of the utility model is controlled in the range of phi 9 mm-phi 13.5mm in external diameter size, and can be divided into long, medium and short types according to the length. The long scope is also called as a full-length colonoscope, is 1850mm (1550 mm-1950 mm), and can enter the terminal of the ileum through the ileocecal part. The middle-long enteroscope is 1350mm (900 mm-1450 mm), and can be inserted into transverse colon or ileocecal part. The short scope is 850mm (600 mm-950 mm), and can be inserted into descending colon or colon splenic flexure.
The spiral opposite direction of outer spiral spring pipe 11 and interior spiral spring pipe 12 that main hose 1 includes, interior spiral spring pipe 12 is left-handed spring, and outer spiral spring pipe 11 is right-handed spring, of course, interior spiral spring pipe 12 also can be right-handed spring, and outer spiral spring pipe 11 is left-handed spring, the surface of medical polyurethane coating 14 is equipped with length mark line and length mark size, and medical transparent polyurethane film 15 is for protecting the seal of a government organization in old china coating.
The insertion tube of the colonoscope is inserted from the anus of the human body, through the lumen of the intestine such as the rectum. The human anorectal systolic pressure is very high, and is about 20Kpa to 28 Kpa. The reason for including the inner and outer helical spring tubes in the main hose 1 is: firstly, the detected contraction and pressure of the anus and the intestine are large; secondly, the insertion tube of the endoscope needs to be inserted, pushed or pulled out when the examination and diagnosis are carried out in the intestinal tract, and needs to be twisted at a proper angle when reaching the turning part in the intestine, and the insertion tube is easy to twist or deform due to the larger pressure of the anorectal cavity. Therefore, the main hose of the present invention is designed to be an inner and an outer spring tube structure (i.e. a double-layer spring tube), so as to ensure that the insertion tube of the colonoscope has certain compression resistance and deformation resistance, so as to satisfy the relevant technical requirements when inserting into the anorectal diagnosis, and avoid the occurrence of deformation and distortion during the use.
Because current colonoscope belongs to the medical endoscope of semi-hermeticity, the structure does not all have sealed requirement behind the back connecting portion to the intubate subassembly, can not get into "antiseptic solution" disinfection and sterilization to unsealed constitutional part, this has just also led to a complete endoscope only the front portion can disinfect, and the rear portion structure can not disinfect, appears the cross infection problem very easily, in order to overcome such defect, as shown in fig. 3, 5, the tip periphery of back connection seat 31 and the outside that is located constant head tank 311 are equipped with sealing washer 33. The sealing ring 33 may be a ring-shaped sealing ring with a circular cross section or a ring-shaped sealing ring with a rectangular cross section. When the medical endoscope is used, the rear connecting seat 31 is in sealing connection with the operation part connecting cylinder of the operation system through the sealing ring, so that the backward structure of the rear connecting part of the insertion tube assembly is a sealing structure, 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 water 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 mechanical equipment is prolonged.
As shown in fig. 1, 2 and 4, in order to facilitate the fixed connection of the spring retainer ring to the front connection portion of the main hose, the traction spring assembly structure 2 further includes a front connection seat 23, the front connection seat 23 includes a spring retainer ring connection section 231 and a front connection section 232 that are integrated with each other, the front connection section 232 is fixedly connected to the front connection portion of the main hose 1, a medical transparent polyurethane film 15 is disposed on the periphery of the front connection section 232, and the spring retainer ring 21 is fixedly connected to the spring retainer ring connection section 231.
Four traction springs in the prior art are directly welded on the hole wall of an inner hole of a spring fixing ring, and have the following defects: firstly, because the aperture of spring retainer plate hole is little for the welding is difficult, and is not only time-consuming, and is inefficient, and second, four spring welding back appear crooked easily, have promptly with the central axis nonparallel problem, once take place crooked when traction spring welded fastening, one of them, occupy the spatial position in the aperture, will influence the assembly of the relevant part of former design device in the insertion tube hole. If the ' clamp tube ' is not inserted into the ' 3 rd quadrant ' hole of the insertion tube, the conventional medical soft endoscope has the ' clamp tube (the hole for instruments such as biopsy forceps, cytobrush and the like) ', the diameter of the ' clamp tube is large, (the ' clamp tube ' is mainly arranged in the 3 rd quadrant); secondly, when the steel wire rope is pulled by an endoscope operation corner, the friction force between a skewed spring hole and the steel wire rope is large, and the steel wire rope is easily abraded or broken. Thirdly, the welding quality and reliability cannot be guaranteed because of the welding in the small holes.
In order to overcome the above-mentioned defect, as shown in fig. 6, the spring fixing ring 21 is provided with four spring mounting grooves 211 arranged separately on the inner wall and along the axial direction thereof, and one ends of the four traction springs 22 are respectively arranged in the corresponding spring mounting grooves 211. Spring retainer plate 21 is including each other's traction spring fixed section and preceding joint chair linkage segment as an organic whole, be equipped with four spring mounting grooves 211 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 periphery of spring retainer plate linkage segment 231, and the periphery of preceding joint chair linkage segment is equipped with medical transparent polyurethane film 15. Because the utility model discloses a with four springs 22 weld respectively in the spring mounting groove on the inner wall of spring retainer plate 21, not only make things convenient for the welding for labour saving and time saving has improved assembly efficiency, implements tack weld to the spring moreover, can ensure that can not appear crooked after the spring welding, has guaranteed welding quality and reliability.
As shown in fig. 6, the inner hole of the spring fixing ring 21 is provided with a clamp pipe installation channel 212, an included angle formed between the first spring installation groove 2111 and the second spring installation groove 2112 which are positioned at two sides of the clamp pipe installation channel 212 and the center line of the inner hole of the spring fixing ring 21 is 98-102 °, the other two spring installation grooves 211 are uniformly distributed on the inner wall of the spring fixing ring 21 at the outer side of the clamp pipe installation channel 212, that is, the other two springs are respectively fixed in the spring grooves at 90 ° positions of the cross center line. As can be seen from the figure, the first spring mounting groove 2111 and the second spring mounting groove 2112 for mounting two traction springs among the four traction springs have an angular deviation of 4 to 6 degrees from the horizontal direction or the vertical direction, respectively, and in order to enlarge the space of the third quadrant by the large-sized clamp tube, the smaller the insertion tube inserted into the human body, the better. However, the cable of the camera and a thick forceps tube which needs to enter a surgical instrument cannot be installed due to the fact that the hole is too thin and the hole is too small, so that the 3 rd quadrant position in the existing hole cavity is increased by offsetting the angle of the welding position of the spring.
As shown in fig. 5 and 9, in order to make the structure of the present invention more reasonable, the rear connecting seat 31 has a main hose connecting portion 312 and an operating system connecting portion 313 which are integrated with each other, the main hose connecting portion 312 is fixedly connected with the rear connecting portion of the main hose 1, and the periphery of the operating system connecting portion 313 is provided with a fastening nut 32 and a positioning groove 311. When in use, the operation part connecting cylinder of the operation system is sleeved on the periphery of the operation system connecting part 313 of the rear connecting seat 31 and is fastened into a whole through a cone end screw, and the end part of the cone end screw is locked in the positioning groove 311.
As shown in fig. 9, 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 conical set screw 5 is screwed into the positioning groove of the rear socket 31, and the position of the positioning groove is just on the axis of the printed mark on the upper surface of the insertion tube assembly and is consistent with (parallel to) the axis of a traction spring at the upper position welded with the front end of the insertion tube. So say, the constant head tank of 4's multiples just in time with the position of the XY cross central line of insert tube cross-section, can with before the insert tube, or on the cross central line equipment of the part at rear portion to unanimous position, thereby reach the insert tube and can not the left and right sides rotation, reach moreover the utility model discloses a control endoscope inserts human inner chamber after, the doctor can never get into the mark position on the insert tube outside the human body and judge, and the anterior camera of insert tube that gets into the human body (with the horizontal plane) upright position, still the state of how many angles of skew partially, enable the doctor to judge the condition of being examined the diagnosis position better.
As shown in fig. 5, in order to further improve the rationality of the present invention, a sealing ring mounting groove 314 is formed on the outer peripheral wall of the operating system connecting portion 313, the sealing ring mounting groove 314 is located outside the positioning groove 311, and a sealing ring 33 is disposed in the sealing ring mounting groove 314. In order to make the utility model form a sealing connection structure with the operation part connecting cylinder of the operation system, thereby preventing cross infection.
In order to prevent the bending assembly from shifting in the process of rotating in four directions, the total number of the positioning grooves 311 on the peripheral wall of the rear seat 31 is a multiple of 4, and the positioning grooves are uniformly distributed on the peripheral wall of the rear seat 31. The positioning slot 311 is a triangular tooth slot or a rectangular tooth slot. The number of the positioning grooves can be 32, 28, 24 or 20, and the like. The advantages of the design are as follows: first, the four-direction bend angle of the bending part in front of the endoscope is the bend angle in the four directions of the XY axes which are mutually perpendicular, the number of the positioning grooves on the periphery of the rear connecting seat is a multiple of 4, and the 4 mutually perpendicular grooves are exactly consistent with the four directions of the bend angle of the bending part in the four directions of the XY axes. When the bending part assembly is assembled, any one of four directions is used as a positive direction upward bending angle of an endoscope product, and at the moment, a positioning screw is screwed, the screw is positioned in any one of 4 equal parts of grooves, the orientation of the bending part bending angle is consistent with the position of the upright direction of the endoscope product, and therefore, the multiple of 4 equal parts is needed. After the colonoscope is inserted into the inner cavity of the examined person by a doctor, the orientation of the shot image is determined by a square camera at the front end, an upward bend angle of a front bending part of the endoscope is adopted (when an endoscope operation part is vertical to the horizontal plane, the upward bend angle of the front end is used for operating the upward bend angle), the four direction bend angles are formed by four direction bend angles of a cross center line of a bending part in front of the insertion tube, the cross center lines of the four direction bend angles are correspondingly printed with length marks corresponding to the cross center line of the insertion tube, and the cross center line of the insertion tube is correspondingly printed with a positioning groove which is 4 times designed corresponding to the periphery of the rear connecting seat. Although the doctor cannot see the angle or position of the camera of the endoscope in the inner cavity of the human body, the judgment is carried out by the mark printed on the back part of the insertion tube outside the human body, which is upward and on the insertion tube of the operating part in the right position (one positioning groove on the rear connecting seat corresponds to the axial center line printed with the mark). The method is adopted to judge the direction or direction of the detected surface of the inner cavity of the human body. The physician can quickly proceed to the location requiring diagnosis or biopsy.
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 3132 is designed to have an advantage that when the mesh woven tube at one end of the hose assembly is connected to the hole of the step hole 3132 by soldering or structural adhesive, the operating system connecting part 313 has a taper hole 3131 and a step hole 3132 which are coaxially arranged, and the step hole 3132 is located inside the taper hole 3131.
Traditional double operation method needs to be accomplished by 2 people, the art person need to demonstrate to the assistant constantly and advance and retreat mirror and revolve the mirror, the cooperation of advancing the mirror of assistant, moving back mirror in 2 people's operations, hardly reach the position that the art person needs the diagnosis or the position of biopsy completely, at this moment intestinal canal is in the state of constantly wriggling again, need acquiescence cooperation really, the art person can not experience the feel that the assistant inserted the mirror, increased the operation, and diagnostic degree of difficulty, check-up time is longer, or increased the person of being examined misery sometimes.
In order to overcome the defects, as shown in fig. 7 and 8, the utility model discloses a main hose structure of five sections of different soft or hard degrees, not only the softness can be better, and the human body is inserted to clinical use's insertion performance is better moreover, has further alleviateed this misery of being examined simultaneously, the intermediate part of main hose 1 is divided into five sections along its length, the pitch P of the outer spiral spring pipe of first section, and11the pitch of the second section of the outer helical spring pipe is 3 mm-3.9 mm, and the pitch P of the second section of the outer helical spring pipe12The pitch of the third section of the outer spiral spring pipe is 3.5 mm-4.1 mm, and the pitch P of the third section of the outer spiral spring pipe13The pitch of the fourth section of the outer spiral spring tube is 3.7 mm-4.4 mm, and the pitch P of the fourth section of the outer spiral spring tube14The pitch of the spiral spring is 4.1 mm-4.5 mm, and the pitch P of the external spiral spring pipe of the fifth section15The pitch of (A) is 4.3 mm-5.0 mm, and P11＜P12＜P13＜P14＜P15，
Pitch P of the first section of the inner helical spring tube21The pitch of the second section of the inner spiral spring pipe is 3 mm-3.9 mm, and the pitch P of the second section of the inner spiral spring pipe is22The pitch of the third section is 3.5 mm-4.1 mm, and the pitch P of the third section of the inner spiral spring pipe23The pitch of the inner spiral spring tube is 3.7 mm-4.4 mm, and the pitch P of the inner spiral spring tube of the fourth section24The screw pitch of the fifth section of the inner spiral spring pipe is 4.1 mm-4.5 mm25The pitch of (A) is 4.3 mm-5.0 mm, and P21＜P22＜P23＜P24＜P25，
Shore A hardness of the medical polyurethane coating of the first section 131 to 38A, the Shore hardness A of the medical polyurethane coating 14 of the second section240-49A, and the Shore hardness A of the medical polyurethane coating of the third section350-58A, and the Shore hardness A of the medical polyurethane coating of the fourth section468-86A, and the Shore hardness A of the medical polyurethane coating of the fifth section5Is 89 to 95A, and A1＜A2＜A3＜A4＜A5，
The outer diameter phi of the woven mesh pipe 13 is 11 mm-13 mm, the weaving angle beta of the woven mesh pipe 13 is 30-40 degrees, and the pitch H of the cross points of the woven mesh pipe 13 is 2.0 mm-3.8 mm.
The utility model discloses the main hose branch of colonoscope has the reason of the different soft or hard degree of five sections:
first, because the key to colonoscopy is how to insert the endoscope and make a diagnosis, effective diagnosis of colic disease can only be achieved by delivering the colonoscope to the ileocecal region or end of the ileum, where the diagnosis is observed. Therefore, the technique of inserting the lens and the design requirement of the inserting tube are very important.
Secondly, the lower digestive tract structure of the human body has more curves which are coiled and rotated, and at least four curved intestinal tracts are needed. The colonoscope is inserted through the rectum-sigmoid junction; then through sigmoid colon-SD curve; then passing through the splenic flexure-transverse colon flexure part; then passes through the hepatic flexure-ascending colon bending part; the ileum was then inserted through the blind intestine. The physician then inspects the whole large intestine by taking the endoscope back.
Therefore, the utility model discloses bright colonoscope divide has the insert tube of five sections different soft or hard degrees, provides the colonoscope that the insert tube performance is better for the doctor, more makes things convenient for the doctor to insert human lower alimentary canal and diagnoses. The length of the insertion tube reaches 1900mm, and the insertion tube can be processed to be the longest, and can completely meet the requirements of operations and diagnoses of rectum, colon, small intestine and the like of the whole lower digestive tract cavity of a human body in the aspects of flexibility, insertion performance and the like.
Thus, in clinical diagnosis, the whole diagnosis and biopsy of the intestinal tract can be completed by 1 person. 1 people accomplishes the use of colonoscope, and the operator not only can directly experience the hand feeling of inserting the colonoscope, and obviously can improve the working quality of examination, diagnosis or biopsy, but also can save the labor cost, improve the examination efficiency, shorten the examination time and reduce the pain of the examined person.
The utility model is divided into five sections with different hardness, and the following specific examples 1,
Main hose of colonoscope of examples 2, 3:
TABLE 1
The pitch that interior spiral spring pipe and every section of outer spiral spring pipe correspond is the same, that is the compliance in order to guarantee inside and outside spiral spring pipe for the segmentation soft or hard degree of the insert tube that final production was prepared can reach the requirement.
The utility model discloses during the use, be connected the operation portion connecting cylinder of operation subassembly with the back connection seat, it is rotatory earlier in radial screw on the operation portion connecting cylinder makes in its constant head tank of twisting on the back connection seat, tighten fastening nut again for operation portion connecting cylinder and back connection seat are tightly decided as an organic wholely, can prevent effectively like this that back connection seat from appearing becoming flexible with the joint department of operation portion connecting cylinder, and the operation portion connecting cylinder can not appear controlling pivoted phenomenon, ensure reliability that both connect, and then realized that crooked subassembly can not appear squinting in bending process, improve colonoscope male accuracy nature, examinee's misery has been reduced.
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 (10)
1. An insertion tube assembly for a colonoscope, comprising:
the hose comprises a main hose (1), wherein the main hose (1) comprises an outer spiral spring pipe (11), an inner spiral spring pipe (12) and a woven net pipe (13), the inner spiral spring pipe (12) is arranged in the outer spiral spring pipe (11), the woven net pipe (13) is sleeved on the periphery of the outer spiral spring pipe (11), the main hose (1) comprises a front connecting part, a middle part and a rear connecting part, the outer spiral spring pipe (11), the inner spiral spring pipe (12) and the woven net pipe (13) of the front connecting part and the rear connecting part are welded into a whole, a medical polyurethane coating (14) is arranged on the periphery of the woven net pipe (13) of the middle part, and a medical transparent polyurethane film (15) is arranged on the periphery of the medical polyurethane coating (14);
traction spring subassembly structure (2), traction spring subassembly structure (2) include spring retainer plate (21) and four traction spring (22), spring retainer plate (21) are established at the preceding connecting portion of main hose (1), and the one end of four traction spring (22) is established on spring retainer plate (21) to four traction spring (22) all insert in interior spiral spring pipe (12), its characterized in that:
still include operating system coupling mechanism (3), operating system coupling mechanism (3) are including back connection seat (31) and fastening nut (32), back connection seat (31) and the back connecting portion fixed connection of main hose (1), fastening nut (32) suit is on back connection seat (31), the outside that is located fastening nut (32) on the periphery wall of back connection seat (31) is equipped with constant head tank (311), and four traction spring (22) are all worn out outside back connection seat (31).
2. A colonoscope insertion tube assembly, according to claim 1, wherein: and a sealing ring (33) is arranged on the periphery of the end part of the rear connecting seat (31) and positioned outside the positioning groove (311).
3. A colonoscope insertion tube assembly, according to claim 1, wherein: traction spring subassembly structure (2) still includes preceding connection base (23), preceding connection base (23) are including each other spring retainer plate linkage segment (231) and preceding linkage segment (232) as an organic whole, preceding linkage segment (232) and the preceding connecting portion fixed connection of main hose (1), and the periphery of preceding linkage segment (232) is equipped with medical transparent polyurethane membrane (15), spring retainer plate (21) suit is in the periphery of spring retainer plate linkage segment (231) and rather than fixed connection.
4. A colonoscope insertion tube assembly, according to claim 1, wherein: the spring fixing ring is characterized in that four spring mounting grooves (211) which are separately arranged are formed in the inner wall of the spring fixing ring (21) along the axial direction of the spring fixing ring, and one ends of four traction springs (22) are respectively arranged in the corresponding spring mounting grooves (211).
5. A colonoscope insertion tube assembly according to claim 4 and wherein: the inner hole of the spring fixing ring (21) is provided with a clamp pipe installation channel (212), an included angle formed between the center line of the inner hole of the spring fixing ring (21) and a first spring installation groove (2111) and a second spring installation groove (2112) which are positioned at two sides of the clamp pipe installation channel (212) is 98-102 degrees, and the other two spring installation grooves (211) are uniformly distributed on the inner wall of the spring fixing ring (21) at the outer side of the clamp pipe installation channel (212).
6. A colonoscope insertion tube assembly, according to 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 a positioning groove (311).
7. A colonoscope insertion tube assembly according to claim 6 and 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).
8. A colonoscope insertion tube assembly according to claim 6 and wherein: the total number of the positioning grooves (311) on the peripheral wall of the rear connecting seat (31) is multiple of 4.
9. A colonoscope insertion tube assembly according to claim 6 and 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).
10. A colonoscope insertion tube assembly, according to claim 1, wherein: the middle part of the main hose (1) is divided into five sections along the length thereof, and the pitch P of the external spiral spring pipe of the first section11The pitch of the second section of the outer helical spring pipe is 3 mm-3.9 mm, and the pitch P of the second section of the outer helical spring pipe12The pitch of the third section of the outer spiral spring pipe is 3.5 mm-4.1 mm, and the pitch P of the third section of the outer spiral spring pipe13The pitch of the fourth section of the outer spiral spring tube is 3.7 mm-4.4 mm, and the pitch P of the fourth section of the outer spiral spring tube14The pitch of the spiral spring is 4.1 mm-4.5 mm, and the pitch P of the external spiral spring pipe of the fifth section15The pitch of (A) is 4.3 mm-5.0 mm, and P11＜P12＜P13＜P14＜P15，
Pitch P of the first section of the inner helical spring tube21The pitch of the second section of the inner spiral spring pipe is 3 mm-3.9 mm, and the pitch P of the second section of the inner spiral spring pipe is22The pitch of the third section is 3.5 mm-4.1 mm, and the pitch P of the third section of the inner spiral spring pipe23The pitch of the inner spiral spring tube is 3.7 mm-4.4 mm, and the pitch P of the inner spiral spring tube of the fourth section24The screw pitch of the fifth section of the inner spiral spring pipe is 4.1 mm-4.5 mm25The pitch of (A) is 4.3 mm-5.0 mm, and P21＜P22＜P23＜P24＜P25，
Shore A hardness of the medical polyurethane coating of the first section131-38A, and the Shore hardness A of the medical polyurethane coating of the second section240-49A, and the Shore hardness A of the medical polyurethane coating of the third section350-58A, and the Shore hardness A of the medical polyurethane coating of the fourth section468-86A, and the Shore hardness A of the medical polyurethane coating of the fifth section5Is 89 to 95A, and A1＜A2＜A3＜A4＜A5，
The outer diameter phi of the woven mesh pipe (13) is 11 mm-13 mm, the weaving angle beta of the woven mesh pipe (13) is 30-40 degrees, and the pitch H of the cross points of the woven mesh pipe (13) is 2.0 mm-3.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441621.8U CN211324922U (en) | 2019-08-30 | 2019-08-30 | Insertion tube assembly of colonoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441621.8U CN211324922U (en) | 2019-08-30 | 2019-08-30 | Insertion tube assembly of colonoscope |
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| CN211324922U true CN211324922U (en) | 2020-08-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420007A (en) * | 2019-08-30 | 2019-11-08 | 常州延顺光电科技有限公司 | The insertion tube sub-assembly of Sigmoidoscope |
| CN112597981A (en) * | 2021-03-04 | 2021-04-02 | 四川大学 | Intelligent enteroscope withdrawal quality monitoring system and method based on deep neural network |
-
2019
- 2019-08-30 CN CN201921441621.8U patent/CN211324922U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420007A (en) * | 2019-08-30 | 2019-11-08 | 常州延顺光电科技有限公司 | The insertion tube sub-assembly of Sigmoidoscope |
| CN112597981A (en) * | 2021-03-04 | 2021-04-02 | 四川大学 | Intelligent enteroscope withdrawal quality monitoring system and method based on deep neural network |
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