CN110420007A - The insertion tube sub-assembly of Sigmoidoscope - Google Patents
The insertion tube sub-assembly of Sigmoidoscope Download PDFInfo
- Publication number
- CN110420007A CN110420007A CN201910815084.7A CN201910815084A CN110420007A CN 110420007 A CN110420007 A CN 110420007A CN 201910815084 A CN201910815084 A CN 201910815084A CN 110420007 A CN110420007 A CN 110420007A
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- Prior art keywords
- tube
- interconnecting piece
- spring
- pitch
- retainer plate
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
-
- 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
- A61B1/00112—Connection or coupling means
- A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
- A61B1/00128—Connectors, fasteners and adapters, e.g. on the endoscope handle mechanical, e.g. for tubes or pipes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00131—Accessories for endoscopes
- A61B1/00137—End pieces at either end of the endoscope, e.g. caps, seals or forceps plugs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0057—Constructional details of force transmission elements, e.g. control wires
-
- 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
- A61B1/012—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 characterised by internal passages or accessories therefor
-
- 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
- A61B1/04—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 combined with photographic or television appliances
-
- 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
- A61B1/31—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 for the rectum, e.g. proctoscopes, sigmoidoscopes, colonoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
- A61M25/0053—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
Abstract
The present invention relates to a kind of insertion tube sub-assemblies of Sigmoidoscope, comprising: main flexible tube, the main flexible tube include preceding interconnecting piece, middle part and rear interconnecting piece；Stiff spring modular construction, the stiff spring modular construction includes spring retainer plate and four stiff springs, the spring retainer plate is located at the preceding interconnecting piece of main flexible tube, one end of four springs is located on spring retainer plate, and in four spring insertion inside spin bourdon tubes, its innovative point is: further including operating system bindiny mechanism, the operating system bindiny mechanism includes rear joint chair and fastening nut, joint chair is fixedly connected with the rear interconnecting piece of main flexible tube after described, the fastening nut is sleeved on rear joint chair, outside after described on the periphery wall of attachment base and positioned at fastening nut is equipped with locating slot, four springs are pierced by outside rear joint chair.It is not in rotation after the present invention and operating assembly are equipped, and guaranteeing crooked assembly during bending is not in offset.
Description
Technical field
The present invention relates to a kind of insertion tube sub-assemblies, and in particular to a kind of insertion tube sub-assembly of Sigmoidoscope belongs to medical treatment
Equipment technology field.
Background technique
Sigmoidoscope is not only the important tool of diagnosis large intestine (and sigmoid colon), small intestinal diseases, it is often more important that can
To be used to treat the disease of the enteron aisles such as some large intestines (and sigmoid colon), ileum, such as large intestine (and sigmoid colon), ileum enteron aisle
The excision of polyp, the hemostasis of the intestinal bleedings such as large intestine (and sigmoid colon), ileum, volvulus reset, the treatment of intestinal pseudo obstruction,
The expansion of large intestine benign colorectal anastomotic stricturess and caecum stoma etc..
Sigmoidoscope is generally main by insertion tube sub-assembly, crooked assembly, operating assembly and camera, graphics processor etc.
Component is constituted.The front end of the insertion tube sub-assembly is connect with crooked assembly, and rear end is connect with operating assembly, and crooked assembly
End is equipped with camera lens, and graphics processor is mutually equipped with with operating assembly.In prior art, the rear end of the insertion tube sub-assembly
After connecting with the operation portion connecting cylinder of operating assembly, it is easy to appear the loosening of insertion tube joint, and showing for left-right rotation occurs
As deviating crooked assembly during bending, having seriously affected the insertion of Sigmoidoscope, increase the pain of subject
Hardship occurs as soon as medical equipment failure when serious.
Summary of the invention
Be not in rotation after being equipped with the object of the present invention is to provide a kind of and operating assembly, and guarantee crooked assembly
It is during bending not in the insertion tube sub-assembly of the Sigmoidoscope of offset.
In order to achieve the above object, the technical scheme is that a kind of insertion tube sub-assembly of Sigmoidoscope, comprising:
Main flexible tube, the main flexible tube include external spiral bourdon tube, inside spin bourdon tube and woven network tube, the inside spin bullet
Reed pipe is located in external spiral bourdon tube, and woven network tube is sleeved on the periphery of external spiral bourdon tube, and the main flexible tube includes preceding connection
External spiral bourdon tube, inside spin bourdon tube and the mesh grid of portion, middle part and rear interconnecting piece, the preceding interconnecting piece and rear interconnecting piece
Guan Jun is welded as a whole, and the woven network tube periphery of the middle part is equipped with medical polyurethane coating, and medical polyurethane coating
Periphery is equipped with medical transparent polyurethane film；
Stiff spring modular construction, the stiff spring modular construction include spring retainer plate and four stiff springs, institute
The preceding interconnecting piece that spring retainer plate is located at main flexible tube is stated, one end of four stiff springs is each provided on spring retainer plate, and four
Root stiff spring is inserted into inside spin bourdon tube, and innovative point is:
It further include operating system bindiny mechanism, the operating system bindiny mechanism includes rear joint chair and fastening nut, described
Joint chair is fixedly connected with the rear interconnecting piece of main flexible tube afterwards, and the fastening nut is sleeved on rear joint chair, outside the rear attachment base
Outside on peripheral wall and positioned at fastening nut is equipped with locating slot, and four stiff springs are pierced by outside rear joint chair.
In the above-mentioned technical solutions, the end periphery of joint chair and it is located at the outside of locating slot after described and is equipped with sealing ring.
In the above-mentioned technical solutions, the stiff spring modular construction further includes preceding joint chair, and the preceding joint chair includes each other
The spring retainer plate linkage section and preceding linkage section of one, the preceding linkage section are fixedly connected with the preceding interconnecting piece of main flexible tube, and preceding
The periphery of linkage section is equipped with medical transparent polyurethane film, and the spring fixed trap is mounted in the periphery of spring retainer plate linkage section simultaneously
It is firmly connected with it.
In the above-mentioned technical solutions, cloth is separated there are four setting on the inner wall of the spring retainer plate and along its axial direction
One end of the spring mounting groove set, four stiff springs is respectively provided in corresponding spring mounting groove.
In the above-mentioned technical solutions, the inner hole of the spring retainer plate has pincers deferent installation passage, and is located at pincers deferent
It is formed between the first spring mounting groove and second spring mounting groove and the inner hole centreline of spring retainer plate of installation passage two sides
Angle be 98 °~102 °, other two spring mounting groove be evenly arranged on pincers deferent installation passage on the outside of spring retainer plate it is interior
On wall.
In the above-mentioned technical solutions, the seat tool that is followed by has the main flexible tube interconnecting piece being mutually integrated to connect with operating system
Portion, the main flexible tube interconnecting piece are fixedly connected with the rear interconnecting piece of main flexible tube, and the periphery of the operating system interconnecting piece is equipped with tight
Gu nut and locating slot.
In the above-mentioned technical solutions, the periphery wall of the operating system interconnecting piece is equipped with sealing ring mounting groove, and seals
Circle mounting groove is located at the outside of locating slot, is equipped with sealing ring in the sealing ring mounting groove.
In the above-mentioned technical solutions, the multiple that the total quantity of the locating slot on the periphery wall of the rear attachment base is 4.
In the above-mentioned technical solutions, the operating system interconnecting piece has the taper hole and stepped hole of coaxial line arrangement, and platform
Rank hole is located at the inside of taper hole.
In the above-mentioned technical solutions, the middle part of the main flexible tube is divided into five sections along its length, the external spiral bullet of first segment
The pitch P of reed pipe11Screw pitch be 3mm~3.9mm, the pitch P of the external spiral bourdon tube of second segment12Screw pitch be 3.5mm~
4.1mm, the pitch P of the external spiral bourdon tube of third section13Screw pitch be 3.7mm~4.4mm, the 4th section of external spiral bourdon tube
Pitch P14Screw pitch be 4.1mm~4.5mm, the pitch P of the 5th section of external spiral bourdon tube15Screw pitch be 4.3mm~5.0mm,
And P11< P12< P13< P14< P15,
The pitch P of the inside spin bourdon tube of first segment21Screw pitch be 3mm~3.9mm, the inside spin bourdon tube of second segment
Pitch P22Screw pitch be 3.5mm~4.1mm, the pitch P of the inside spin bourdon tube of third section23Screw pitch be 3.7mm~4.4mm,
The pitch P of 4th section of inside spin bourdon tube24Screw pitch be 4.1mm~4.5mm, the screw pitch of the 5th section of inside spin bourdon tube
P25Screw pitch be 4.3mm~5.0mm, and P21< P22< P23< P24< P25,
The shore hardness A of the medical polyurethane coating of first segment1It is 31~38, Shao of the medical polyurethane coating of second segment
Family name's hardness A2It is 40~49, the shore hardness A of the medical polyurethane coating of third section3It is 50~58, the 4th section of medical polyurethane
The shore hardness A of coating4It is 68~86, the shore hardness A of the 5th section of medical polyurethane coating5It is 89~95, and A1< A2<
A3< A4< A5,
The outer diameter Φ of the woven network tube is 11mm~13mm, and the braid angle β of woven network tube is 30 °~40 °, woven network tube
Crosspoint pitch H be 2.0mm~3.8mm.
Good effect possessed by the present invention is: after the insertion tube sub-assembly of Sigmoidoscope of the invention, due to this hair
Bright further includes operating system bindiny mechanism, and the operating system bindiny mechanism includes rear joint chair and fastening nut, the rear joint chair
It is fixedly connected with the rear interconnecting piece of main flexible tube, the fastening nut is sleeved on rear joint chair, on the periphery wall of the rear attachment base
And the outside for being located at fastening nut is equipped with locating slot, four stiff springs are pierced by outside rear joint chair；
In use, the operation portion connecting cylinder of operating assembly is connect with rear joint chair, first rotate on the operation portion connecting cylinder
Radial screw be screwed into it in locating slot on rear joint chair, then fastening nut is tightened, so that operation portion connecting cylinder and rear joint chair
Tightening is integrated, and the joint that rear joint chair and operation portion connecting cylinder can be effectively prevented in this way loosens, and operation portion connects
The phenomenon that cylinder is not in left-right rotation, it is ensured that the reliability of the two connection, and then realize crooked assembly during bending
Be not in offset, improve the accuracy of Sigmoidoscope insertion, reduce the pain of subject.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of specific embodiment of the invention；
Fig. 2 is the structural schematic diagram that main flexible tube of the present invention is connect with stiff spring modular construction；
Fig. 3 is the structural schematic diagram that main flexible tube of the present invention is connect with operating system bindiny mechanism；
Fig. 4 is the structural schematic diagram of joint chair before the present invention；
Fig. 5 is of the invention to be followed by holder structure schematic diagram；
Fig. 6 is the left view schematic diagram of spring retainer plate of the present invention；
Fig. 7 is the structural schematic diagram of main flexible tube of the present invention；
Fig. 8 is the structural schematic diagram of woven network tube in Fig. 7；
Fig. 9 is the structural schematic diagram of joint chair and the connection of the operation portion connecting cylinder of operating system after the present invention.
Specific embodiment
Below in conjunction with attached drawing and the embodiment provided, the present invention is further illustrated, and however, it is not limited to this.
As shown in Fig. 1,2,3,4,5,6,7,8,9, a kind of insertion tube sub-assembly of Sigmoidoscope, comprising:
Main flexible tube 1, the main flexible tube 1 includes external spiral bourdon tube 11, inside spin bourdon tube 12 and woven network tube 13, described
Inside spin bourdon tube 12 is located in external spiral bourdon tube 11, and woven network tube 13 is sleeved on the periphery of external spiral bourdon tube 11, described
Main flexible tube 1 includes preceding interconnecting piece, middle part and rear interconnecting piece, the external spiral bourdon tube 11 of the preceding interconnecting piece and rear interconnecting piece,
Inside spin bourdon tube 12 and woven network tube 13 are welded as a whole, and 13 periphery of woven network tube of the middle part is equipped with medical poly- ammonia
Ester coating 14, and the periphery of medical polyurethane coating 14 is equipped with medical transparent polyurethane film 15；
Stiff spring modular construction 2, the stiff spring modular construction 2 include spring retainer plate 21 and four stiff springs
22, the spring retainer plate 21 is located at the preceding interconnecting piece of main flexible tube 1, and one end of four stiff springs 22 is each provided at spring retainer plate
On 21, and four stiff springs 22 are inserted into inside spin bourdon tube 12,
It further include operating system bindiny mechanism 3, the operating system bindiny mechanism 3 includes rear joint chair 31 and fastening nut
32, the rear joint chair 31 is fixedly connected with the rear interconnecting piece of main flexible tube 1, and the fastening nut 32 is sleeved on rear joint chair 31, institute
It states on the periphery wall of rear attachment base 31 and the outside for being located at fastening nut 32 is equipped with locating slot 311, four stiff springs 22 are worn
After out outside joint chair 31.
Sigmoidoscope outer diameter scope control of the invention, and can according to its length within the scope of Φ 9mm~Φ 13.5mm
It is divided into three type of long, medium and short.It is 1850mm (1550mm~1950mm) that long mirror, which is also known as overall length Sigmoidoscope, can be entered by ileocecus
Terminal ileum.Middle long colonoscopy is 1350mm (900mm~1450mm), can be inserted to transverse colon, can also enter ileocecus sometimes.Short mirror
For 850mm (600mm~950mm), colon descendens or left flexure of colon can be inserted to.
The hand of spiral of external spiral bourdon tube 11 and inside spin bourdon tube 12 that main flexible tube 1 of the present invention includes on the contrary,
Inside spin bourdon tube 12 is left-handed spring, and external spiral bourdon tube 11 is dextrorotation spring, and certainly, the inside spin bourdon tube 12 can also
Think that dextrorotation spring, external spiral bourdon tube 11 are left-handed spring, the outer surface of the medical polyurethane coating 14 is equipped with long scale
Remember line and length mark size, and medical transparent polyurethane film 15 is to protect marking coating.
The insertion tube of Sigmoidoscope is inserted into from the anus of human body, by gut lumens such as rectum.Human anus' rectum
Systolic pressure is very big, about between 20Kpa~28Kpa.The reason of including inside and outside helical Bourdon tube in main flexible tube 1, is: first is that institute
Contraction and the pressure for detecting anal intestine are larger；Second is that the insertion tube of its endoscope will carry out insertion push when checking diagnosis in enteron aisle
Or the operation of extraction, and also need to reverse angle appropriate to enteral turning, since the pressure of anal intestine inner cavity is larger, insertion tube
Easily distortion or deformation.Therefore, main flexible tube of the invention is designed as inside and outside spring tube structure (i.e. double-layer spring pipe), is in order to true
The insertion tube for protecting Sigmoidoscope has the intensity of certain resistance to compression, resistance to deformation, is wanted with the relevant technologies when meeting insertion anal intestine diagnosis
Phenomena such as asking, being not in deformation, distortion in use.
Since existing Sigmoidoscope is to belong to semitight medical endoscope, for insertion tube sub-assembly rear interconnecting piece with
Structure not can enter " thimerosal " sterilization for the structure division of blow-by, this is also resulted in without seal request afterwards
One complete endoscope only has front that can sterilize, and rear structure cannot sterilize, it is easy to cross-infection problem occur, be
Overcome such defect, as shown in Fig. 3,5, it is of the present invention after joint chair 31 end periphery and be located at the outside of locating slot 311
Equipped with sealing ring 33.Sealing ring 33 of the present invention can be section be circular ring type seal either section be rectangle
Ring type seal.In use, attachment base 31 is tightly connected by sealing ring and the operation portion connecting cylinder of operating system after described, make
Obtaining the structure of the rear interconnecting piece of insertion tube sub-assembly backward is sealing structure, can be all immersed in thimerosal, is carried out
Sterilizing, disinfection, on the one hand, the cross-infection problem of medical endoscope can be effectively prevent, on the other hand, can effectively prevent outside
Liquid or vapor etc. enter inside endoscope, prevent the aging of internal electric elements, extend the service life of medical equipment equipment.
As shown in Fig. 1,2,4, spring retainer plate is fixedly connected with the preceding interconnecting piece of main flexible tube for convenience, the traction
Spring assembly structure 2 further includes preceding joint chair 23, the preceding joint chair 23 include the spring retainer plate linkage section 231 being mutually integrated and before
Linkage section 232, the preceding linkage section 232 is fixedly connected with the preceding interconnecting piece of main flexible tube 1, and the periphery of preceding linkage section 232 is equipped with
Medical transparent polyurethane film 15, the spring retainer plate 21 are fixedly connected with spring retainer plate linkage section 231.
Four stiff springs are directly welded on the hole wall of spring retainer plate inner hole in the prior art, have following lack
It falls into: first, since the aperture of spring retainer plate inner hole is small, so that welding difficulty, not only time-consuming, but also low efficiency, second,
Be easy to appear skew after the welding of four springs, that is, there is a problem of it is not parallel with central axis, once stiff spring is welded and fixed
When skew has occurred, first, occupying the spatial position in aperture, just will affect correlation zero of the former design device in insertion pore
The assembly of part.If " pincers deferent " installs not into the position in " third quadrant " hole of insertion tube, because in conventional medical flexible
Sight glass has " pincers deferent (duct for instruments such as biopsy forceps, cytobrush) ", and diameter is thicker, (be mostly installed at the 3rd as
Limit)；Second, when being welded and fixed stiff spring pipe skew, weld the axial line and haulage cable of the bourdon tube of skew
Axial line is askew when endoscopic procedure bent angle haulage cable there have been the error of the geometric tolerance of not coaxial inner conductor is larger
Oblique spring eye and friction force of steel rope are very big, it is easy to wear or rub the product quality problem of wirerope.Third, because small
It is welded in hole, welding quality and reliability cannot be guaranteed.
In order to overcome drawbacks described above, as shown in fig. 6, on the inner wall of spring retainer plate 21 of the present invention and along its axial direction side
Spring mounting groove 211 arranged apart there are four setting upwards, one end of four stiff springs 22 is respectively provided at corresponding bullet
In spring mounting groove 211.The spring retainer plate 21 includes the stiff spring fixed section and preceding joint chair linkage section being mutually integrated, described
Spring mounting groove 211 arranged apart there are four being set on the inner wall of stiff spring fixed section and along its axial direction, preceding joint chair
Linkage section is sleeved on the periphery of spring retainer plate linkage section 231, and the periphery of preceding joint chair linkage section is equipped with medical transparent polyurethane
Film 15.Since the present invention is in the spring mounting groove that four springs 22 are respectively welded on 21 inner wall of spring retainer plate, not only
Facilitate welding, so that it is time saving and energy saving, assembly efficiency is improved, and positioning welding is implemented to spring, it can be ensured that spring welding
After be not in skew, ensure that welding quality and reliability.
As shown in fig. 6, the inner hole of the spring retainer plate 21 has pincers deferent installation passage 212, and it is located at pincers deferent peace
Fill the first spring mounting groove 2111 of 212 two sides of channel and the inner hole center of second spring mounting groove 2112 and spring retainer plate 21
The angle formed between line is 98 °~102 °, other two spring mounting groove 211 is evenly arranged on 212 outside of pincers deferent installation passage
Spring retainer plate 21 inner wall on, i.e., other two springs are separately fixed in the spring groove of 90 ° of positions of cross centre line.
As seen from the figure, there are the first spring mounting groove 2111 and second spring peace for installing two stiff springs in four stiff springs
Tankage 2112 has 4 °~6 ° of angle offset with horizontal direction or vertical direction respectively, in order to which tong deferent is by the sky of third quadrant
Between increase, due to insertion human body insertion tube be more thin the smaller the better.But too thin, Kong Tai little, the cable of camera
And the thicker pincers deferent into surgical instrument is needed just to fill to enter, so the third quadrant position that existing hole is intracavitary
Increased by deviating the angle of spring welding position.
As shown in Fig. 5,9, in order to enable structure of the invention is more reasonable, the rear joint chair 31 has the master being mutually integrated soft
Pipe jointing part 312 and operating system interconnecting piece 313, the fixed company of rear interconnecting piece of the main flexible tube interconnecting piece 312 and main flexible tube 1
It connects, the periphery of the operating system interconnecting piece 313 is equipped with fastening nut 32 and locating slot 311.In use, the operation of operating system
Portion's connecting cylinder is sleeved on the periphery of the operating system interconnecting piece 313 of rear joint chair 31, and is integrated by awl-end screw tightening, and bores
Hold the end lock of screw in locating slot 311.
As shown in figure 9, the end of the rear joint chair of insertion tube sub-assembly is installed over to the left from operation portion connection bore, and
It is lived with fastening nut spinning on the end face of operation portion connecting cylinder 4.In order to ensure insertion tube sub-assembly not can rotate, the present invention also exists
Design has the small screw hole of standard to be used to fill tapered end holding screw 5 on operation portion connecting cylinder 4.Designing on the operation portion connecting cylinder 4 has
The position of the small screw hole of standard is the position on the upright center line of operation portion i.e. endoscope (instrument).Tapered end holding screw at this time
5 are tightened in 31 locating slot of rear joint chair, and the position of locating slot at this time is placed exactly in the upper surface of insertion tube sub-assembly
It on axis among printing mark, and is (parallel) with the axis of a stiff spring of the upper bit of insertion tube front end welding
It is consistent.Thus, the locating slot of 4 multiple just with insertion tube section XY cross centre line position, can and insertion tube
Before or the cross centre line of part at rear portion be assembled on consistent position, so that reaching insertion tube is unable to left-right rotation, and
After the control endoscope for reaching of the invention is inserted into human intracavity, doctor can be from the marker bit on the insertion tube not entered outside human body
It sets and judges, into insertion tube front camera head (with the horizontal plane) upright position or the shape of skewed how many angle for entering human body
State can make doctor preferably judge the case where being examined diagnostic position.
As shown in figure 5, in order to further increase reasonability of the present invention, on the periphery wall of the operating system interconnecting piece 313
Equipped with sealing ring mounting groove 314, and sealing ring mounting groove 314 is located at the outside of locating slot 311, the sealing ring mounting groove 314
It is interior to be equipped with sealing ring 33.In order to enable the operation portion connecting cylinder of the present invention and operating system forms Hermetical connecting structure, prevent from handing over
Fork infection.
It shifts during crooked assembly four direction rotation all around in order to prevent, the rear attachment base 31
The total quantity of locating slot 311 on periphery wall is 4 multiple, and is evenly arranged on the periphery wall of rear attachment base 31.The positioning
Slot 311 is triangle tooth socket either rectangle tooth socket.The quantity of the locating slot can be 32,28,24 or 20 etc..It designs in this way
Benefit is: one, four direction bent angles of the bending section before endoscope, are the bent angles in four directions of orthogonal XY axis, after
The quantity of the locating slot of joint chair periphery be 4 multiple, orthogonal 4 slots therein just with " the four of bending section institute bent angle
A direction " is consistent also in the four direction of XY axial direction.When be assembled into bending parts when, four direction any one
Direction bent angle as endoscope product positive direction upward bent angle when, as long as screwing positioning screw at this time, screw is located in 4
In any one slot of equal part, the orientation of bending section bent angle meets the position in the upright direction of endoscope product, so needing 4
The multiple of equal part.Two, after Sigmoidoscope is inserted into examinee inner cavity by doctor, determined by the camera of the direct bearing of front end, it is right
The orientation of taken the photograph image be using endoscope front curve upper direction bent angle (when endoscopic procedure portion is perpendicular to horizontal plane,
Front end bent angle upward when bent angle in operation), be by insertion tube before bending part cross centre line four direction bent angle
, the cross centre line of four direction bent angle corresponds to correspondence on the cross centre line of insertion tube again and is printed with length mark, inserts
Entering the corresponding length mark that is printed on the cross centre line of pipe has the locating slot for having 4 times corresponding to the design of rear joint chair periphery.Although
Doctor can't see angle or position of the camera of endoscope in human intracavity, but be printed by the insertion tube rear portion of human external
Label on the insertion tube with the operation portion of direct bearing upward of brush (answers a locating slot to correspond to and is printed with mark on rear joint chair
The longitudinal center line of note), to be judged.The orientation or direction of human intracavity's plane was seized are judged using the method.Doctor can be fast
Speed proceeds to the position for needing the position or biopsy that diagnose.
As shown in figure 5, the advantages of taper hole is: when the operation portion of the part stiff spring Guan Yuhou is fixed, bourdon tube needs
After there are some angles outward, just connected convenient for the dependency structure in biconditional operation portion, so being designed as coniform hole.Stepped hole 3132 designs
The advantages of be to be attached assembling at the woven network tube of one end of hose and the hole of stepped hole 3132, soldering can be used
Or the method connection of structure glue sticking, the operating system interconnecting piece 313 have the taper hole 3131 and stepped hole of coaxial line arrangement
3132, and stepped hole 3132 is located at the inside of taper hole 3131.
Traditional one-man method need to be completed by 2 people, and patient takes quarter to assistant's signal advance and retreat mirror and rotating mirror, 2 people operation
Middle assistant into mirror, move back the cooperation of mirror, be difficult that the position of position or biopsy that patient needs to diagnose, and at this moment intestines are fully achieved
Pipe in state of constantly wriggling, needs tacit cooperation again really, and patient cannot experience the feel that assistant inserts mirror, increase behaviour
The difficulty made and diagnosed, the review time is longer, or increases subject's pain sometimes.
In order to overcome drawbacks described above, as shown in Figure 7,8, the present invention designs the main flexible tube structure of five sections of different soft and hard degree, no
But softness is better, and clinical use insertion human body insertion performance it is better, while further mitigate by examine this
Pain, the middle part of the main flexible tube 1 is divided into five sections along its length, the pitch P of the external spiral bourdon tube 11 of first segment11Spiral shell
Away from for 3mm~3.9mm, the pitch P of the external spiral bourdon tube 11 of second segment12Screw pitch be 3.5mm~4.1mm, third section it is outer
The pitch P of helical Bourdon tube 1113Screw pitch be 3.7mm~4.4mm, the pitch P of the 4th section of external spiral bourdon tube 1114Spiral shell
Away from for 4.1mm~4.5mm, the pitch P of the 5th section of external spiral bourdon tube 1115Screw pitch be 4.3mm~5.0mm, and P11< P12
< P13< P14< P15,
The pitch P of the inside spin bourdon tube 12 of first segment21Screw pitch be 3mm~3.9mm, the inside spin bourdon tube of second segment
12 pitch P22Screw pitch be 3.5mm~4.1mm, the pitch P of the inside spin bourdon tube 12 of third section23Screw pitch be 3.7mm~
4.4mm, the pitch P of the 4th section of inside spin bourdon tube 1224Screw pitch be 4.1mm~4.5mm, the 5th section of inside spin bourdon tube
12 pitch P25Screw pitch be 4.3mm~5.0mm, and P21< P22< P23< P24< P25,
The shore hardness A of the medical polyurethane coating 14 of first segment1It is 31~38, the medical polyurethane coating 14 of second segment
Shore hardness A2It is 40~49, the shore hardness A of the medical polyurethane coating 14 of third section3It is 50~58, the 4th section medical
The shore hardness A of polyurethane coating 144It is 68~86, the shore hardness A of the 5th section of medical polyurethane coating 145It is 89~95,
And A1< A2< A3< A4< A5,
The outer diameter Φ of the woven network tube 13 is 11mm~13mm, and the braid angle β of woven network tube 13 is 30 °~40 °, braiding
The crosspoint pitch H of network management 13 is 2.0mm~3.8mm.
The main flexible tube of Sigmoidoscope of the present invention point has the reason of five sections of different soft and hards are spent:
First is that only Sigmoidoscope is sent to because the key of colonoscopy is how to be inserted into endoscope and make diagnosis
To ileocecus or terminal ileum, (inspections and examinations to terminal ileum) could carry out efficient diagnosis to large intestine disease.So inserting mirror skill
Art and all seem particularly significant to the design requirement of insertion tube.
Second is that the bend of the lower digestive tract structure coiling revolution of human body is more, at least need by four curved enteron aisles.Knot
Colonoscopy is inserted through rectum -- second shape intersection；Pass through sigmoid colon again -- the bending section SD；Passing through splenic flexure again -- transverse colon is curved
Pars convoluta position；Pass through hepatic flexure of colon again -- colon ascendens crooked position；Ileum is inserted by caecum mouth again.Doctor pass through again. while moving back mirror
It checks, inspection diagnosis is carried out to entire large intestine.
So the bright Sigmoidoscope of the present invention divides the insertion tube for having five sections of different soft and hard degree, it is in order to which doctor provides insertion tube
The better Sigmoidoscope of performance, more convenient doctor are inserted into human body lower digestive tract and diagnose.It is inserted into length of tube and reaches 1900mm, no
It is only capable of processing longest and in terms of flexibility and insertion, fully meets rectum, colon, small intestine etc., human body
The inspection of entire lower digestive tract cavity, diagnosis operate with.
In this way in clinical diagnosis in use, the process of this diagnosis and the biopsy of wanting 1 people operation to complete to enteron aisle whole.1
People complete Sigmoidoscope use, patient not only can directly experience Sigmoidoscope insertion feel, hence it is evident that can improve inspection, diagnose or
The work quality of biopsy, and cost of labor can be saved, it improves and checks efficiency, shorten the review time, reduce subject's pain.
The present invention is classified as five sections of different soft and hard degree, and following specific embodiment 1, embodiment 2, reality can be obtained by table 1
Apply the main flexible tube of the Sigmoidoscope of example 3:
Table 1
Inside spin bourdon tube of the present invention is identical as every section of corresponding screw pitch of external spiral bourdon tube, that is interior in order to guarantee
The pliability of external spiral bourdon tube is consistent, so that the segmentation hardness for the insertion tube that final production is prepared can be only achieved requirement.
The present invention first rotates the operation portion company in use, the operation portion connecting cylinder of operating assembly is connect with rear joint chair
Radial screw in connect cylinder is screwed into it in locating slot on rear joint chair, then tightens fastening nut so that operation portion connecting cylinder with
Joint chair tightening afterwards is integrated, and the joint that rear joint chair and operation portion connecting cylinder can be effectively prevented in this way loosens, and is operated
The phenomenon that portion's connecting cylinder is not in left-right rotation, it is ensured that the reliability of the two connection, and then realize crooked assembly and be bent
In the process be not in offset, improve the accuracy of Sigmoidoscope insertion, reduce the pain of subject.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of insertion tube sub-assembly of Sigmoidoscope, comprising:
Main flexible tube (1), the main flexible tube (1) include external spiral bourdon tube (11), inside spin bourdon tube (12) and woven network tube
(13), the inside spin bourdon tube (12) is located in external spiral bourdon tube (11), and woven network tube (13) is sleeved on external spiral spring
The periphery of (11) is managed, the main flexible tube (1) includes preceding interconnecting piece, middle part and rear interconnecting piece, the preceding interconnecting piece and afterwards connection
External spiral bourdon tube (11), inside spin bourdon tube (12) and the woven network tube (13) in portion are welded as a whole, the middle part
Woven network tube (13) periphery is equipped with medical polyurethane coating (14), and the periphery of medical polyurethane coating (14) is equipped with medical transparent
Polyurethane film (15)；
Stiff spring modular construction (2), the stiff spring modular construction (2) include spring retainer plate (21) and four traction bullets
Spring (22), the spring retainer plate (21) are located at the preceding interconnecting piece of main flexible tube (1), and one end of four stiff springs (22) is located at bullet
On spring retainer plate (21), and four stiff springs (22) are inserted into inside spin bourdon tube (12), it is characterised in that:
It further include operating system bindiny mechanism (3), the operating system bindiny mechanism (3) includes rear joint chair (31) and fastening nut
(32), the rear joint chair (31) is fixedly connected with the rear interconnecting piece of main flexible tube (1), and the fastening nut (32) is sleeved on rear joint chair
(31) on, locating slot (311) are equipped on the periphery wall of the rear attachment base (31) and positioned at the outside of fastening nut (32), four
Stiff spring (22) is pierced by rear joint chair (31) outside.
2. the insertion tube sub-assembly of Sigmoidoscope according to claim 1, it is characterised in that: the end of joint chair (31) after described
Periphery is simultaneously located at the outside of locating slot (311) equipped with sealing ring (33).
3. the insertion tube sub-assembly of Sigmoidoscope according to claim 1, it is characterised in that: the stiff spring modular construction
It (2) further include preceding joint chair (23), the preceding joint chair (23) includes the spring retainer plate linkage section (231) being mutually integrated and preceding connection
Section (232), the preceding linkage section (232) is fixedly connected with the preceding interconnecting piece of main flexible tube (1), and the periphery of preceding linkage section (232)
Equipped with medical transparent polyurethane film (15), the spring retainer plate (21) is sleeved on the periphery of spring retainer plate linkage section (231)
And it is firmly connected with it.
4. the insertion tube sub-assembly of Sigmoidoscope according to claim 1, it is characterised in that: the spring retainer plate (21)
Spring mounting groove (211) arranged apart there are four being set on inner wall and along its axial direction, four stiff springs (22)
One end be respectively provided in corresponding spring mounting groove (211).
5. the insertion tube sub-assembly of Sigmoidoscope according to claim 4, it is characterised in that: the spring retainer plate (21)
Inner hole has pincers deferent installation passage (212), and is located at first spring mounting groove of pincers deferent installation passage (212) two sides
(2111) angle formed between second spring mounting groove (2112) and the inner hole centreline of spring retainer plate (21) be 98 ° ~
102 °, other two spring mounting groove (211) is evenly arranged on the interior of the spring retainer plate (21) on the outside of pincers deferent installation passage (212)
On wall.
6. the insertion tube sub-assembly of Sigmoidoscope according to claim 1, it is characterised in that: joint chair (31) has mutual after described
The main flexible tube interconnecting piece (312) and operating system interconnecting piece (313) being integrated, the main flexible tube interconnecting piece (312) and main flexible tube
(1) rear interconnecting piece is fixedly connected, and the periphery of the operating system interconnecting piece (313) is equipped with fastening nut (32) and locating slot
(311).
7. the insertion tube sub-assembly of Sigmoidoscope according to claim 6, it is characterised in that: the operating system interconnecting piece
(313) periphery wall is equipped with sealing ring mounting groove (314), and sealing ring mounting groove (314) is located at the outer of locating slot (311)
Side, the sealing ring mounting groove (314) is interior to be equipped with sealing ring (33).
8. the insertion tube sub-assembly of Sigmoidoscope according to claim 6, it is characterised in that: attachment base (31) is outer after described
The multiple that the total quantity of locating slot (311) on peripheral wall is 4.
9. the insertion tube sub-assembly of Sigmoidoscope according to claim 6, it is characterised in that: the operating system interconnecting piece
(313) taper hole (3131) and stepped hole (3132) with coaxial line arrangement, and stepped hole (3132) is located at taper hole (3131)
Inside.
10. the insertion tube sub-assembly of Sigmoidoscope according to claim 1, it is characterised in that: the centre of the main flexible tube (1)
Portion is divided into five sections along its length, the pitch P of the external spiral bourdon tube (11) of first segment11Screw pitch be the mm of 3 mm ~ 3.9, second
The pitch P of the external spiral bourdon tube (11) of section12Screw pitch be 3.5mm ~ 4.1mm, the spiral shell of the external spiral bourdon tube (11) of third section
Away from P13Screw pitch be the mm of 3.7mm ~ 4.4, the pitch P of the 4th section of external spiral bourdon tube (11)14Screw pitch be 4.1mm ~ 4.5
Mm, the pitch P of the 5th section of external spiral bourdon tube (11)15Screw pitch be the mm of 4.3mm ~ 5.0, and P11< P12< P13< P14<
P15,
The pitch P of the inside spin bourdon tube (12) of first segment21Screw pitch be the mm of 3 mm ~ 3.9, the inside spin bourdon tube of second segment
(12) pitch P22Screw pitch be 3.5mm ~ 4.1mm, the pitch P of the inside spin bourdon tube (12) of third section23Screw pitch be
The mm of 3.7mm ~ 4.4, the pitch P of the 4th section of inside spin bourdon tube (12)24Screw pitch be the mm of 4.1mm ~ 4.5, the 5th section
The pitch P of inside spin bourdon tube (12)25Screw pitch be the mm of 4.3mm ~ 5.0, and P21< P22< P23< P24< P25,
The shore hardness A of the medical polyurethane coating (14) of first segment1It is 31 ~ 38, the medical polyurethane coating (14) of second segment
Shore hardness A2It is 40 ~ 49, the shore hardness A of the medical polyurethane coating (14) of third section3It is 50 ~ 58, the 4th section
The shore hardness A of medical polyurethane coating (14)4It is 68 ~ 86, the shore hardness A of the 5th section of medical polyurethane coating (14)5
It is 89 ~ 95, and A1< A2< A3< A4< A5,
The outer diameter Φ of the woven network tube (13) is the mm of 11 mm ~ 13, and the braid angle β of woven network tube (13) is 30 ° ~ 40 °, is compiled
The crosspoint pitch H of knitmesh pipe (13) is the mm of 2.0mm ~ 3.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815084.7A CN110420007A (en) | 2019-08-30 | 2019-08-30 | The insertion tube sub-assembly of Sigmoidoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815084.7A CN110420007A (en) | 2019-08-30 | 2019-08-30 | The insertion tube sub-assembly of Sigmoidoscope |
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| CN110420007A true CN110420007A (en) | 2019-11-08 |
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| CN111035350A (en) * | 2019-12-30 | 2020-04-21 | 常州延顺光电科技有限公司 | Preparation method of snake bone device of endoscope |
| CN112587069A (en) * | 2021-03-02 | 2021-04-02 | 岱川医疗(深圳)有限责任公司 | Insertion tube of endoscope, processing method thereof and endoscope |
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