CN109316158B - Modularized endoscope with rotatable working sheath and adjustable hose bending radius - Google Patents
Modularized endoscope with rotatable working sheath and adjustable hose bending radius Download PDFInfo
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- CN109316158B CN109316158B CN201811324641.7A CN201811324641A CN109316158B CN 109316158 B CN109316158 B CN 109316158B CN 201811324641 A CN201811324641 A CN 201811324641A CN 109316158 B CN109316158 B CN 109316158B
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- 238000005452 bending Methods 0.000 title claims abstract description 42
- 210000003813 thumb Anatomy 0.000 claims description 54
- 230000007246 mechanism Effects 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000013016 damping Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
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- 239000011425 bamboo Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0052—Constructional details of control elements, e.g. handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00066—Proximal part of endoscope body, e.g. handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—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
- A61B1/00105—Constructional details of the endoscope body characterised by modular construction
-
- 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
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- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
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- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
The invention discloses a modularized endoscope with a rotatable working sheath and an adjustable flexible pipe bending radius, wherein the front end of the endoscope working sheath is coaxially fixed with the rear end of an endoscope tube, and the rear end of the endoscope working sheath is connected with the front end of an endoscope handle; a rotary transitional connection structure which can enable the endoscope working sheath to axially rotate relative to the endoscope handle is arranged between the rear end of the endoscope working sheath and the front end of the endoscope handle, an image lighting device channel connector and an instrument connector are arranged on the endoscope working sheath, and an image lighting channel communicated with the image lighting device channel connector and an instrument channel communicated with the instrument connector are arranged in the endoscope tube along the direction parallel to the axis of the endoscope tube. The bending radius of the hose is adjustable: the length of the flexible tube at the front part of the endoscope tube is adjusted by moving the adjusting core rod back and forth so as to change the bending radius of the flexible tube. The endoscope working sheath is rotatable: saving labor and being convenient. The endoscope handle is replaceable: meets the use requirements of different doctors.
Description
Technical Field
The invention relates to the technical field of endoscopes, in particular to a modularized endoscope with a rotatable working sheath and an adjustable flexible pipe bending radius.
Background
The current method for treating pathological tissues in the body cavity is changed from traditional open surgery to minimally invasive surgery. The imaging and lighting device and the surgical instrument required in the minimally invasive surgery treatment process are difficult to directly reach a target point, and the instrument needs to be guided into the cavity channel through the guiding device endoscope. However, in the clinical application at present, the endoscope is difficult to guide the instrument to a target point in a narrow cavity, and the endoscope is required to be continuously rotated and moved in the surgical operation process to adjust the turning direction and the turning radius of the soft sheath so as to complete the omnibearing observation in the cavity and the conveying of the instrument. When the turning direction of the soft sheath to be adjusted is large, the hand holding the endoscope needs to be twisted together with the soft sheath, so that the operation is very laborious and inconvenient, and meanwhile, different doctors have different habits on controlling the bending of the soft sheath during the operation, and the habits influence the exertion of the operation level of the doctors to a certain extent.
Disclosure of Invention
The invention aims to solve the defects of the background technology, and provides the modularized endoscope with the rotatable working sheath and the adjustable flexible tube bending radius, which has the advantages of labor saving in operation, easy adjustment of the bending direction and the bending radius of the flexible tube and capability of meeting the use habits of different doctors.
The invention provides a modularized endoscope with a rotatable working sheath and an adjustable flexible pipe bending radius, which comprises an endoscope handle, an endoscope working sheath and an endoscope pipe, wherein the endoscope pipe comprises a hard pipe and a flexible pipe, the front end of the hard pipe is coaxially fixed with the rear end of the flexible pipe, the rear end of the hard pipe is coaxially fixed in the front end of the endoscope working sheath, an image lighting device channel joint and an instrument joint are arranged on the endoscope working sheath, an image lighting channel communicated with the image lighting device channel joint and an instrument channel communicated with the instrument joint are arranged in the endoscope pipe along the direction parallel to the axis of the endoscope working sheath, and the rear end of the endoscope working sheath is rotatably connected with the front end of the endoscope handle;
a bending radius adjusting mechanism capable of adjusting the turning radius of the hose is arranged in the endoscope tube;
the hose is internally fixed with a steering steel wire, and the rear end of the steering steel wire is fixedly connected with a bending steering mechanism which can stretch the steering steel wire to bend the hose.
Further, a rotary transition connection structure which can enable the endoscope working sheath to axially rotate relative to the endoscope handle is arranged between the rear end of the endoscope working sheath and the front end of the endoscope handle; the rotary transition connecting structure is a rotary sleeve, the rear end of the endoscope working sheath is a circular ring, the rotary sleeve is sleeved on the rear end circular ring of the endoscope working sheath, the rotary sleeve is in clearance fit with the rear end circular ring of the endoscope working sheath, the outer surface of the rear end circular ring of the endoscope working sheath is connected with the inner surface of the rotary sleeve through a limit structure which can prevent the outer surface of the rear end circular ring of the endoscope working sheath from falling out of the inner surface of the rotary sleeve, and the front end of the endoscope handle is mutually matched and connected with the rotary sleeve.
Further, the limit structure comprises a first locating ring arranged on the inner surface of the front end of the rotary sleeve and a second locating ring arranged on the inner surface of the rear end of the rotary sleeve, and a limit ring is arranged on the outer surface of the rear end of the connecting sleeve and is located between the first locating ring and the second locating ring.
Further, the two sides of the rear end cylinder wall of the rotary sleeve are symmetrically provided with L-shaped sleeve positioning grooves, the sleeve positioning grooves comprise sleeve axial positioning grooves axially formed in the rotary sleeve and sleeve radial positioning grooves radially formed in the rotary sleeve, the width of each sleeve axial positioning groove is identical to that of each sleeve radial positioning groove, and two sides of the outer surface of the front end of the endoscope handle are symmetrically provided with handle positioning rods matched with the corresponding sleeve positioning grooves.
Further, the bending radius adjusting mechanism comprises an adjusting core rod inserted into the endoscope tube and extending into the hose, the rear end of the adjusting core rod is fixedly connected with an adjusting core rod handle, and a core rod handle guiding long hole enabling the adjusting core rod handle to move forwards and backwards along the axial direction of the endoscope working sheath is formed in the surface of the endoscope working sheath along the axial direction of the endoscope working sheath.
Further, a connecting pin shaft guide hole is formed in the rear end of the endoscope working sheath along the axial direction of the connecting pin shaft guide hole, a connecting pin shaft capable of moving along the axial direction of the connecting pin shaft guide hole is arranged in the connecting pin shaft guide hole, the connecting pin shaft is fixed with the rear end of the steering steel wire, damping exists between the connecting pin shaft guide hole and the connecting pin shaft, a pin shaft positioning seat capable of being matched and fixed with the connecting pin shaft is arranged at the front end of the endoscope handle, and a tensioning mechanism capable of driving the pin shaft positioning seat to stretch along the axial direction of the endoscope handle is arranged in the endoscope handle;
the connecting pin shaft, the pin shaft positioning seat and the tensioning mechanism form the bending steering mechanism.
Further, the endoscope working sheath consists of a conical working sheath with an axial through hole and hollow, a cylindrical transitional connecting pipe section and a connecting sleeve; the endoscope tube is fixed in the axial through hole of the conical working sheath, the rear end face of the conical working sheath is coaxially and fixedly connected with the transitional connecting tube section, and the rear end face of the transitional connecting tube section is coaxially and fixedly connected with the connecting sleeve; the image lighting device channel joint and the instrument joint are arranged on the transitional connecting pipe section, the connecting sleeve is axially provided with the connecting pin shaft guide hole, and the rotating sleeve is coaxially sleeved on the outer surface of the connecting sleeve;
the endoscope handle is a handle with a hollow interior, and the pin shaft positioning seat is arranged in the endoscope handle.
Further, the connecting pin shaft comprises a pin shaft rod, the front end of the pin shaft rod is fixedly connected with the steering steel wire, the rear end of the pin shaft rod is coaxially and fixedly connected with a pin shaft connecting rod, the rear end of the pin shaft connecting rod is coaxially and fixedly connected with an oval positioning seat, the diameter of the pin shaft connecting rod is smaller than that of the pin shaft rod, and the length of the long shaft of the oval positioning seat is larger than that of the pin shaft connecting rod; the pin shaft positioning seat comprises a pin shaft positioning plate, a stepped hole is formed in the pin shaft positioning plate, the stepped hole comprises an elliptical hole matched with the elliptical positioning seat and a round hole coaxially communicated with the elliptical hole, and the elliptical positioning seat penetrates through the elliptical hole and is arranged in the round hole.
Preferably, the tensioning mechanism is a thumb wheel tensioning mechanism or a thumb lever tensioning mechanism:
the thumb wheel tensioning mechanism comprises a thumb wheel, a thumb wheel rod and a thumb wheel rod support fixed in the endoscope handle, wherein the front end of the thumb wheel rod penetrates through the thumb wheel rod support to be fixedly connected with the pin shaft positioning plate, the rear end of the thumb wheel rod penetrates through the rear end of the thumb wheel rod support, threads are arranged on the outer surface of the middle part of the thumb wheel rod, threaded holes are formed in the thumb wheel along the axial direction of the thumb wheel, the threads of the thumb wheel rod are matched with the threaded holes of the thumb wheel, and thumb wheel through holes are formed in the position, corresponding to the thumb wheel, of the endoscope handle.
The deflector rod tensioning mechanism comprises a reel, a traction support coaxially fixed in the endoscope handle, a traction pin shaft coaxially and fixedly connected with the pin shaft positioning plate, and a deflector rod connected to the surface of the endoscope handle and controlling the reel to rotate; the traction support is characterized in that a traction wire is connected between the reel and the traction pin shaft, a traction pin shaft guide hole is formed in the traction support along the axial direction of the traction support, the traction pin shaft is coaxially arranged in the traction pin shaft guide hole, and damping exists between the traction pin shaft guide hole and the traction pin shaft.
The beneficial effects of the invention are as follows:
1. the bending radius of the hose is adjustable: the length of the flexible tube at the front part of the endoscope tube is adjusted by moving the adjusting core rod back and forth so as to change the bending radius of the flexible tube. In the operation process, a doctor can adjust the bending radius of the hose according to the size of the cavity and the path change to reach a target point.
2. The endoscope working sheath is rotatable: through rotating sleeve and endoscope handle connection, the endoscope work sheath can be rotatory for rotating sleeve, and the doctor can hold the endoscope handle control hose crooked with one hand, simultaneously, and the other hand can hold the endoscope work sheath and rotatory adjustment hose's the crooked direction, does not need to twist reverse whole endoscope to adjust the crooked direction of hose, and is laborsaving, convenient.
3. The endoscope handle is replaceable: some doctors in the clinic are accustomed to using a thumbwheel structure to control hose bending and some doctors are accustomed to using a thumbstick structure to control hose bending. The invention uses the connecting pin shaft as a connecting piece, and forms a modularized connecting structure by matching with the thumb wheel or the thumb lever, thereby meeting the use requirements of different doctors.
Drawings
FIG. 1 is a perspective view of an endoscope working sheath of the present invention;
FIG. 2 is a perspective view of a paddle-type endoscope handle of the present invention;
FIG. 3 is a perspective view of a lever-type endoscope handle of the present invention;
FIG. 4 is a right side view of the endoscope working sheath of the present invention;
FIG. 5 is a cross-sectional view of A-A of FIG. 4;
FIG. 6 is a cross-sectional view of B-B in FIG. 4;
FIG. 7 is a left side view of a paddle endoscope handle of the present invention;
FIG. 8 is a cross-sectional view of C-C of FIG. 7;
FIG. 9 is a left side view of a lever-type endoscope handle of the present invention;
FIG. 10 is a cross-sectional view of D-D of FIG. 9;
FIG. 11 is a perspective view of an endoscope working sheath in a relative mating position with a paddle-type endoscope handle in accordance with the present invention;
FIG. 12 is an axial cross-sectional view of an endoscope working sheath mated with a paddle-type endoscope handle in accordance with the present invention;
FIG. 13 is a perspective view of the connecting pin of FIG. 11 in a relative mating position with a pin keeper;
FIG. 14 is a perspective view of an endoscope working sheath and a toggle-type endoscope handle in a relative mated position in accordance with the present invention;
FIG. 15 is an axial cross-sectional view of the present invention with the endoscope working sheath mated with the paddle endoscope handle;
FIG. 16 is a perspective view of the connecting pin of FIG. 14 in a relative mating position with a pin keeper;
wherein, 1-endoscope handle, 2-endoscope working sheath (2.1-conical working sheath, 2.2-transitional connecting tube section, 2.3-connecting sleeve), 3-endoscope tube (3.1-hard tube, 3.2-flexible tube), 4-connecting pin (4.1-pin shaft, 4.2-pin shaft connecting rod, 4.3-oval positioning seat), 5-pin positioning seat (5.1-pin positioning plate), 6-steering steel wire, 7-rotating sleeve (7.1-first positioning ring, 7.2-second positioning ring), 8-adjusting core rod, 9-adjusting core rod handle, 10-rod handle guiding slot, 11-connecting pin guiding hole, 12-cylindrical fixing seat, 13-fixing plug, 14-image lighting device channel joint, 15-instrument joint, 16-limiting ring, 17-elliptical hole, 18-round hole, 19-sleeve positioning slot (19.1-sleeve axial positioning slot, 19.2-sleeve radial positioning slot), 20-handle positioning rod, 21-thumb wheel, 22-thumb wheel rod, 23-thumb wheel rod support, 24-reel, 25-traction support, 26-traction pin, 27-thumb rod, 28-traction wire, 29-traction pin guide hole, 30-image lighting channel, 31-instrument channel, 32-adjustment mandrel channel, 33-image lighting channel guide hole, 34-instrument channel guide hole, 35-wire via hole, 36-adjustment mandrel via hole.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
The modular endoscope with rotatable working sheath and adjustable bending radius of the flexible tube as shown in fig. 1-16 comprises an endoscope handle 1, an endoscope working sheath 2 and an endoscope tube 3 which are coaxially connected.
As shown in fig. 2 and 7 to 8 (dial-type endoscope handle), or as shown in fig. 3 and 9 to 10 (dial-type endoscope handle), the endoscope handle 1 is a hollow handle, the pin positioning seat 5 is provided in the endoscope handle 1, and a tensioning mechanism capable of driving the pin positioning seat 5 to stretch in the axial direction of the endoscope handle 1 is provided in the endoscope handle 1.
The tensioning mechanism is a thumb wheel tensioning mechanism or a thumb lever tensioning mechanism:
as shown in fig. 7-8, the thumb wheel tensioning mechanism comprises a thumb wheel 21, a thumb wheel rod 22 and a thumb wheel rod support 23 fixed in the endoscope handle 1, wherein the front end of the thumb wheel rod 22 penetrates through the thumb wheel rod support 23 to be fixedly connected with a pin shaft positioning plate 5.1, the rear end of the thumb wheel rod 22 penetrates through the rear end of the thumb wheel rod support 23, threads are arranged on the outer surface of the middle part of the thumb wheel rod 22, threaded holes are arranged in the thumb wheel 21 along the axial direction of the thumb wheel, the threads of the thumb wheel rod 22 are matched with the threaded holes of the thumb wheel 21, and thumb wheel through holes are formed in the position of the endoscope handle 1 corresponding to the thumb wheel 21.
As shown in fig. 9-10, the deflector rod tensioning mechanism comprises a reel 24, a traction support 25 coaxially fixed in the endoscope handle 1, a traction pin 26 coaxially and fixedly connected with the pin positioning plate 5.1, and a deflector rod 27 connected to the surface of the endoscope handle 1 and controlling the reel 24 to rotate; a traction wire 28 is connected between the reel 24 and the traction pin 26, a traction pin guide hole 29 is formed in the traction support 25 along the axial direction of the traction pin, the traction pin 26 is coaxially arranged in the traction pin guide hole 29, and damping exists between the traction pin guide hole 29 and the traction pin 26.
As shown in fig. 1, the endoscope working sheath 2 is composed of a hollow conical working sheath 2.1 with an axial through hole, a cylindrical transitional connecting pipe section 2.2 and a connecting sleeve 2.3, wherein the rear end surface of the conical working sheath 2.1 is coaxially and fixedly connected with the transitional connecting pipe section 2.2, and the rear end surface of the transitional connecting pipe section 2.2 is coaxially and fixedly connected with the connecting sleeve 2.3.
As shown in fig. 5-6, the cylindrical fixing seat 12 is coaxially and fixedly connected in the shaft hole at the front end of the conical working sheath 2.1, the endoscope tube 3 is coaxially and fixedly arranged in the cylindrical fixing seat 12, the fixing plug 13 is coaxially and fixedly arranged in the rear end of the cylindrical fixing seat 12, the rear end face of the endoscope tube 3 is fixedly arranged on the front end face of the fixing plug 13, and the outer surface of the rear end of the endoscope tube 3 is fixedly arranged on the inner surface of the cylindrical fixing seat 12.
The connecting sleeve 2.3 is provided with a connecting pin shaft guide hole 11 along the axial direction, a connecting pin shaft 4 capable of moving along the axial direction is arranged in the connecting pin shaft guide hole 11, and damping exists between the connecting pin shaft guide hole 11 and the connecting pin shaft 4.
The rotating sleeve 7 is coaxially sleeved on the outer surface of the connecting sleeve 2.3 in a clearance fit manner. The outer surface of the rear end of the endoscope working sheath 2 is connected with the inner surface of the rotary sleeve 7 through a limiting structure which can prevent the outer surface of the rear end of the endoscope working sheath 2 from falling out of the inner surface of the rotary sleeve 7, the limiting structure comprises a first positioning ring 7.1 arranged on the inner surface of the front end of the rotary sleeve 7 and a second positioning ring 7.2 arranged on the inner surface of the rear end of the rotary sleeve 7, a limiting ring 16 is arranged on the outer surface of the rear end of the connecting sleeve 2.3, and the limiting ring 16 is positioned between the first positioning ring 7.1 and the second positioning ring 7.2.
As shown in fig. 11-12 (dial-type endoscope handle) or fig. 14-15 (dial-type endoscope handle), L-shaped sleeve positioning grooves 19 are symmetrically formed in two sides of the rear end cylinder wall of the rotary sleeve 7, each sleeve positioning groove comprises a sleeve axial positioning groove 19.1 axially formed in the rotary sleeve 7 and a sleeve radial positioning groove 19.2 radially formed in the rotary sleeve 7, the width of each sleeve axial positioning groove 19.1 is the same as that of each sleeve radial positioning groove 19.2, and handle positioning rods 20 matched with the sleeve positioning grooves 19 are symmetrically arranged on two sides of the outer surface of the front end of the endoscope handle 1.
As shown in fig. 4-6, the endoscope tube 3 includes a flexible tube 3.2 having a front end extending outside the endoscope working sheath 2 and a rigid tube 3.1 having a rear end fixed inside the endoscope working sheath 2. The endoscope working sheath 2 is internally provided with a bending radius adjusting mechanism capable of controlling the turning radius of the hose 3.2, the bending radius adjusting mechanism comprises an adjusting core rod 8 which is inserted into the endoscope tube 3 and extends into the hose 3.2, the rear end of the adjusting core rod 8 is fixedly connected with an adjusting core rod handle 9, and the surface of the endoscope working sheath 2 is axially provided with a rod handle guiding long hole 10 for the adjusting core rod handle 9 to pass through. The endoscope tube 3 is a three-cavity tube with an image illumination channel 30, an instrument channel 31 and an adjusting mandrel channel 32, and an image illumination channel guide hole 33 coaxially communicated with the image illumination channel 30, an instrument channel guide hole 34 coaxially communicated with the instrument channel 31, a steel wire through hole 35 for the steering steel wire 6 to pass through and an adjusting mandrel through hole 36 for the adjusting mandrel 8 to pass through are arranged in the fixed plug 13; the pipe wall of the transitional connecting pipe section 2.2 is connected with an image lighting device channel joint 14 communicated with an image lighting channel guide hole 33 and an instrument joint 15 communicated with an instrument channel guide hole 34, an adjusting core rod 8 is inserted into the adjusting core rod channel 32 through an adjusting core rod through hole 36, and a steering steel wire 6 is fixedly connected with the connecting pin shaft 4 through the steel wire through hole.
As shown in fig. 5-8 in combination with fig. 12-13 (a paddle-type endoscope handle), or in fig. 5-6 in combination with fig. 9-10 in combination with fig. 15-16 (a paddle-type endoscope handle), the connecting pin 4 comprises a pin shaft 4.1, the front end of which is fixedly connected with the steering wire 6, the rear end of the pin shaft 4.1 is coaxially and fixedly connected with a pin shaft 4.2, the rear end of the pin shaft 4.2 is coaxially and fixedly connected with an oval positioning seat 4.3, the diameter of the pin shaft 4.2 is smaller than that of the pin shaft 4.1, and the length of the long axis of the oval positioning seat 4.3 is larger than that of the pin shaft 4.2. The pin shaft positioning seat 5 comprises a pin shaft positioning plate 5.1, a stepped hole is formed in the pin shaft positioning plate 5.1, the stepped hole comprises an elliptical hole 17 matched with the elliptical positioning seat 4.3 and a round hole 18 coaxially communicated with the elliptical hole 17, and the elliptical positioning seat 4.3 penetrates through the elliptical hole 17 and is arranged in the round hole 18.
The operation method of the invention is as follows:
the operation method of the dial-type endoscope handle comprises the following steps: the doctor holds the endoscope working sheath 2 with one hand, holds the endoscope handle 1 with the other hand, pushes the endoscope tube 3 into the cavity, rotates the thumb wheel 21 according to actual need, adjusts the front and back position of the connecting pin shaft 4 to adjust the bending radius of the hose 3.2, when the bending direction of the hose 3.2 needs to be adjusted, the endoscope working sheath 2 is rotated, if the adjusting thumb wheel 21 can not completely meet the adjusting requirement of the bending radius of the hose 3.2, the length of the hose 3.2 part can be adjusted by changing the front and back position of the adjusting mandrel 8, thereby adjusting the bending radius of the hose 3.2, and the endoscope tube 3 can accurately reach the target.
The operating method of the handle of the poke-rod type endoscope comprises the following steps: the doctor holds the endoscope working sheath 2 with one hand, holds the endoscope handle 1 with the other hand, pushes the endoscope tube 3 into the cavity, dials the deflector rod 27 according to actual needs, adjusts the front and back positions of the connecting pin shaft 4, thereby adjusting the bending radius of the hose 3.2, when the bending direction of the hose 3.2 needs to be adjusted, the endoscope working sheath 2 is rotated, if the adjusting deflector rod 27 can not completely meet the adjusting requirement of the bending radius of the hose 3.2, the length of the hose 3.2 part can be adjusted by changing the front and back positions of the adjusting mandrel 8, thereby adjusting the bending radius of the hose 3.2, and the endoscope tube 3 can accurately reach the target.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a rotatable, flexible hose bend radius adjustable modularization endoscope of working sheath, includes endoscope handle (1), endoscope working sheath (2) and endoscope pipe (3), its characterized in that:
the endoscope tube (3) comprises a hard tube (3.1) and a hose (3.2), the front end of the hard tube (3.1) is coaxially fixed with the rear end of the hose (3.2), the rear end of the hard tube (3.1) is coaxially fixed in the front end of the endoscope working sheath (2), an image illumination device channel joint (14) and an instrument joint (15) are arranged on the endoscope working sheath (2), an image illumination channel (30) communicated with the image illumination device channel joint (14) and an instrument channel (31) communicated with the instrument joint (15) are arranged in the endoscope tube (3) along the direction parallel to the axis of the endoscope tube, and the rear end of the endoscope working sheath (2) is rotatably connected to the front end of the endoscope handle (1);
a bending radius adjusting mechanism capable of adjusting the turning radius of the hose (3.2) is arranged in the endoscope tube (3);
a steering steel wire (6) is fixed in the hose (3.2), and the rear end of the steering steel wire (6) is connected with a bending steering mechanism which can stretch the steering steel wire (6) to bend the hose (3.2);
a rotary transition connection structure which can enable the endoscope working sheath (2) to axially rotate relative to the endoscope handle (1) is arranged between the rear end of the endoscope working sheath (2) and the front end of the endoscope handle (1); the rotary transition connecting structure is a rotary sleeve (7), the rear end of the endoscope working sheath (2) is a circular ring, the rotary sleeve (7) is sleeved on the rear end circular ring of the endoscope working sheath (2), the rotary sleeve (7) is in clearance fit with the rear end circular ring of the endoscope working sheath (2), the outer surface of the rear end circular ring of the endoscope working sheath (2) is connected with the inner surface of the rotary sleeve (7) through a limit structure which can prevent the outer surface of the rear end circular ring of the endoscope working sheath (2) from being separated from the inner surface of the rotary sleeve (7), and the front end of the endoscope handle (1) is connected with the rotary sleeve (7) in a mutual fit manner;
the bending radius adjusting mechanism comprises an adjusting core rod (8) which is inserted into the endoscope tube (3) and extends into the hose (3.2), the rear end of the adjusting core rod (8) is fixedly connected with an adjusting core rod handle (9), and a core rod handle guiding long hole (10) which enables the adjusting core rod handle (9) to move forwards and backwards along the axial direction of the endoscope working sheath is formed in the surface of the endoscope working sheath (2) along the axial direction of the endoscope working sheath.
2. The modular endoscope of claim 1, wherein the working sheath is rotatable and the flexible tube bending radius is adjustable, and wherein: the utility model discloses a endoscope handle, including rotatory sleeve (7), rotatory sleeve (7) rear end section of thick bamboo wall bilateral symmetry is opened there is sleeve constant head tank (19) of L type, sleeve constant head tank (19) include along rotatory sleeve (7) axial sleeve axial constant head tank (19.1) and follow rotatory sleeve (7) radial sleeve radial constant head tank (19.2) of seting up, the width of sleeve axial constant head tank (19.1) with the width of sleeve radial constant head tank (19.2) is the same, the bilateral symmetry of the front end surface of endoscope handle (1) be equipped with sleeve constant head tank (19) complex handle locating lever (20).
3. The modular endoscope of claim 1, wherein the working sheath is rotatable and the flexible tube bending radius is adjustable, and wherein: the rear end of the endoscope working sheath (2) is axially provided with a connecting pin shaft guide hole (11), a connecting pin shaft (4) capable of axially moving along the connecting pin shaft guide hole (11) is arranged in the connecting pin shaft guide hole (11), the connecting pin shaft (4) is fixed with the rear end of the steering steel wire (6), damping exists between the connecting pin shaft guide hole (11) and the connecting pin shaft (4), the front end of the endoscope handle (1) is provided with a pin shaft positioning seat (5) capable of being matched and fixed with the connecting pin shaft (4), and a tensioning mechanism capable of driving the pin shaft positioning seat (5) to stretch along the axial direction of the endoscope handle (1) is arranged in the endoscope handle (1);
the connecting pin shaft (4), the pin shaft positioning seat (5) and the tensioning mechanism form the bending steering mechanism.
4. A modular endoscope with rotatable working sheath and adjustable flexible tube bending radius as defined in claim 3, wherein: the endoscope working sheath (2) consists of a hollow conical working sheath (2.1) with an axial through hole, a cylindrical transitional connecting pipe section (2.2) and a connecting sleeve (2.3); the rear end of the hard pipe (3.1) is coaxially fixed in an axial through hole of the conical working sheath (2.1), the rear end face of the conical working sheath (2.1) is coaxially and fixedly connected with the transition connecting pipe section (2.2), and the rear end face of the transition connecting pipe section (2.2) is coaxially and fixedly connected with the connecting sleeve (2.3); the image lighting device channel joint (14) and the instrument joint (15) are arranged on the transitional connecting pipe section (2.2), the connecting sleeve (2.3) is axially provided with the connecting pin shaft guide hole (11), and the rotating sleeve (7) is coaxially sleeved on the outer surface of the connecting sleeve (2.3);
the endoscope handle (1) is a handle with a hollow interior, and the pin shaft positioning seat (5) is arranged in the endoscope handle (1).
5. The modular endoscope of claim 4, wherein the working sheath is rotatable and the flexible tube bending radius is adjustable, and wherein: the limiting structure comprises a first positioning ring (7.1) arranged on the inner surface of the front end of the rotary sleeve (7) and a second positioning ring (7.2) arranged on the inner surface of the rear end of the rotary sleeve (7), a limiting ring (16) is arranged on the outer surface of the rear end of the connecting sleeve (2.3), and the limiting ring (16) is positioned between the first positioning ring (7.1) and the second positioning ring (7.2).
6. The modular endoscope of claim 3 or 4, wherein the working sheath is rotatable and the flexible tube bending radius is adjustable, and wherein: the connecting pin shaft (4) comprises a pin shaft rod (4.1) with the front end fixedly connected with the steering steel wire (6), the rear end of the pin shaft rod (4.1) is coaxially and fixedly connected with a pin shaft connecting rod (4.2), the rear end of the pin shaft connecting rod (4.2) is coaxially and fixedly connected with an oval positioning seat (4.3), the diameter of the pin shaft connecting rod (4.2) is smaller than that of the pin shaft rod (4.1), and the length of a long shaft of the oval positioning seat (4.3) is larger than that of the pin shaft connecting rod (4.2); the pin shaft positioning seat (5) comprises a pin shaft positioning plate (5.1), a stepped hole is formed in the pin shaft positioning plate (5.1), the stepped hole comprises an elliptical hole (17) matched with the elliptical positioning seat (4.3) and a round hole (18) coaxially communicated with the elliptical hole (17), and the elliptical positioning seat (4.3) penetrates through the elliptical hole (17) and is arranged in the round hole (18).
7. The modular endoscope of claim 6, wherein the working sheath is rotatable and the flexible tube bending radius is adjustable, and wherein: the tensioning mechanism is a thumb wheel tensioning mechanism, the thumb wheel tensioning mechanism comprises a thumb wheel (21), a thumb wheel rod (22) and a thumb wheel rod support (23) fixed in the endoscope handle (1), the front end of the thumb wheel rod (22) penetrates through the thumb wheel rod support (23) to be fixedly connected with the pin shaft positioning plate (5.1), the rear end of the thumb wheel rod (22) penetrates through the rear end of the thumb wheel rod support (23), threads are arranged on the outer surface of the middle part of the thumb wheel rod (22), threaded holes are formed in the thumb wheel (21) along the axial direction of the thumb wheel, the threads of the thumb wheel rod (22) are matched with the threaded holes of the thumb wheel (21), and thumb wheel through holes are formed in the corresponding positions of the endoscope handle (1) and the thumb wheel (21).
8. The modular endoscope of claim 6, wherein the working sheath is rotatable and the flexible tube bending radius is adjustable, and wherein: the tensioning mechanism is a deflector rod tensioning mechanism and comprises a reel (24), a traction support (25) coaxially fixed in the endoscope handle (1), a traction pin shaft (26) coaxially and fixedly connected with the pin shaft positioning plate (5.1) and a deflector rod (27) connected to the surface of the endoscope handle (1) and controlling the reel (24) to rotate; a traction wire (28) is connected between the reel (24) and the traction pin shaft (26), a traction pin shaft guide hole (29) is formed in the traction support (25) along the axial direction of the traction support, the traction pin shaft (26) is coaxially arranged in the traction pin shaft guide hole (29), and damping exists between the traction pin shaft guide hole (29) and the traction pin shaft (26).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811324641.7A CN109316158B (en) | 2018-11-08 | 2018-11-08 | Modularized endoscope with rotatable working sheath and adjustable hose bending radius |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811324641.7A CN109316158B (en) | 2018-11-08 | 2018-11-08 | Modularized endoscope with rotatable working sheath and adjustable hose bending radius |
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| CN109316158B true CN109316158B (en) | 2024-01-19 |
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| JP7209112B2 (en) * | 2019-04-30 | 2023-01-19 | 武漢佑康科技有限公司 | A kind of sheath cap and endoscope guide sheath with sheath cap |
| CN110575115A (en) * | 2019-09-23 | 2019-12-17 | 武汉佑康科技有限公司 | Endoscope structure capable of stepless self-locking |
| US20230389779A1 (en) * | 2019-11-18 | 2023-12-07 | Scivita Medical Technology Co., Ltd. | Endoscope structure |
| CN110916597A (en) * | 2019-12-13 | 2020-03-27 | 北京万特福医疗器械有限公司 | Adjustable and fixed brain endoscope tube sheath |
| CN112155504B (en) * | 2020-09-08 | 2023-01-06 | 新光维医疗科技(苏州)股份有限公司 | Primary and secondary integrated enteroscope for duodenum |
| CN112842458B (en) * | 2020-12-30 | 2022-11-01 | 武汉佑康科技有限公司 | Endoscope catheter structure with water flow rotation circulation function |
| CN115316912B (en) * | 2022-08-31 | 2024-02-23 | 湖南省华芯医疗器械有限公司 | Endoscope front end assembly, endoscope insertion part and endoscope |
| CN117770885A (en) * | 2022-09-20 | 2024-03-29 | 上海微创心通医疗科技有限公司 | Conveying system and control handle thereof |
| CN118203286A (en) * | 2022-12-15 | 2024-06-18 | 浙江逸镜医疗器械有限公司 | Endoscope structure |
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