CN110575116A - Stepless self-locking endoscope device - Google Patents
Stepless self-locking endoscope device Download PDFInfo
- Publication number
- CN110575116A CN110575116A CN201910899293.4A CN201910899293A CN110575116A CN 110575116 A CN110575116 A CN 110575116A CN 201910899293 A CN201910899293 A CN 201910899293A CN 110575116 A CN110575116 A CN 110575116A
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- CN
- China
- Prior art keywords
- steel wire
- fixed
- endoscope
- planetary gear
- gear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- A61B1/005—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
- A61B1/005—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
- A61B1/005—Flexible endoscopes
- A61B1/008—Articulations
Abstract
The invention discloses a stepless self-locking endoscope device, which comprises an endoscope handle, an endoscope working sheath with a soft sheath and a bending adjusting mechanism which is arranged on the endoscope handle and can control the bending of the soft sheath, wherein the bending adjusting mechanism comprises a shifting wheel, a damping shaft, a rotating shaft and a steering steel wire, one end of the damping shaft is coaxially fixed in the shifting wheel, the other end of the damping shaft is fixed on the endoscope handle, one end of the rotating shaft is coaxially fixed in the shifting wheel, the other end of the rotating shaft is rotatably connected on the endoscope handle, the rotating shaft is connected with a planetary gear mechanism, one end of the steering steel wire is fixed on the power output end of the planetary gear mechanism, and the other end of the steering steel wire is inserted into. The poking wheel is poked to drive the rotating shaft and one end of the damping shaft to rotate, the rotating shaft drives the planetary gear mechanism to rotate to drive one end of the steering steel wire to rotate, so that the soft sheath is driven to bend, resistance is generated when the two ends of the damping shaft rotate relatively, the resistance is utilized to become the bending retaining force of the soft sheath, and stepless self-locking is realized.
Description
Technical Field
The invention relates to the technical field of endoscope structures, in particular to an endoscope device capable of stepless self-locking.
Background
the current method for surgical treatment of pathological tissues in human body cavities is changed from traditional open surgical treatment to minimally invasive surgical treatment. The camera lighting device and the surgical instrument which are needed in the minimally invasive surgery treatment process are difficult to directly reach a target point, and the instrument needs to be guided into a cavity channel through a guide device endoscope. However, in the current clinical application, the endoscope is difficult to guide the instrument to a target point in a narrow cavity, and doctors need to continuously adjust the turning direction and the turning angle of the soft sheath to complete all-round observation in the cavity and delivery of the instrument in the operation process. At present, the turning direction and angle of the soft sheath are generally adjusted by a manual mechanism, the control precision is limited, and after the soft sheath is adjusted to a proper position, a doctor needs to keep the current position of the endoscope for operation, so that the operation is very hard and inconvenient, the doctor adjusts the bending angle and direction of the soft sheath of the endoscope for a long time, the workload is large, the fatigue is easy, and the operation level of the doctor is influenced to a certain extent.
Patent No. 103654693B, entitled "improved angle adjustment mechanism for endoscope" discloses a self-locking structure for bending a soft sheath of an endoscope, which is based on the principle that a friction plate is used to press a steel wire wheel, so that the steel wire wheel is self-locked at any position, but the patent requires to operate an angle adjustment handle first, so that the steel wire wheel rotates to drive the soft sheath to a bending position, and then to operate a locking handle to lock the steel wire wheel.
The patent No. 107613837B, the patent name "is used for the crooked auto-lock structure of flexible sheath of endoscope" also discloses in the self-locking angle guiding mechanism of endoscope ", its principle is to utilize the spring to support the steel wire wheel and make the steel wire wheel fix a position in the awl section of thick bamboo, utilize the frictional force between awl section of thick bamboo and the steel wire wheel, prevent that the steel wire wheel from rotating and realizing the auto-lock, but the assembly process of this patent is comparatively complicated, need utilize the restoring force of nut regulating spring to guarantee to produce sufficient frictional force between awl section of thick bamboo and the steel wire wheel and prevent that the steel wire wheel from rotating, to the assembly requirement height, in case the assembly precision is not enough, or because relative rotation between awl section of thick bamboo and the steel wire wheel, lead to the frictional force change, all probably lead to the auto-.
Therefore, how to design a stepless self-locking endoscope which has simple structure, convenient assembly and high operation precision and can effectively reduce the workload of manually adjusting the bending direction and the angle of the soft sheath for a long time is a problem faced at present.
Disclosure of Invention
The present invention is to solve the above-mentioned drawbacks of the background art, and provide an endoscope apparatus with stepless self-locking, which has high control precision, saves labor in operation, and does not need to operate the steering and bending mechanism all the time after the doctor finds the treatment position.
In order to achieve the purpose, the endoscope device capable of stepless self-locking designed by the invention comprises an endoscope handle, an endoscope working sheath with a soft sheath and a bending adjusting mechanism which is arranged on the endoscope handle and can control the bending of the soft sheath, and is characterized in that: the bending adjusting mechanism comprises a shifting wheel, a damping shaft, a rotating shaft and a steering steel wire, one end of the damping shaft is coaxially fixed in the shifting wheel, the other end of the damping shaft is fixed on the endoscope handle, one end of the rotating shaft is coaxially fixed in the shifting wheel, the other end of the rotating shaft is rotatably connected onto the endoscope handle, the rotating shaft is connected with a planetary gear mechanism, one end of the steering steel wire is fixed on the power output end of the planetary gear mechanism, and the other end of the steering steel wire is inserted into the soft sheath and fixed with the front end of the soft sheath.
Furthermore, the planetary gear mechanism comprises a sun gear coaxially sleeved on the rotating shaft, a plurality of planetary gears meshed with the sun gear and a gear ring box meshed with the plurality of planetary gears, the plurality of planetary gears are connected to a planetary gear retainer, the planetary gear retainer is fixed in the endoscope handle, one end of the steering steel wire is fixed on the gear ring box through a steel wire traction ring,
Furthermore, a bearing is coaxially sleeved on the rotating shaft, the bearing is positioned between the shifting wheel and the sun wheel, and one side of the gear ring box, which is close to the shifting wheel, is coaxially sleeved on the bearing.
Furthermore, a retainer ring is arranged in the gear ring box and is positioned between the bearing and the plurality of planetary gears, a plurality of gear shafts are fixed on the surface of one side, close to the retainer ring, of the planetary gear retainer, the planetary gears are respectively and coaxially sleeved on the gear shafts, the retainer ring is close to one side surface of the bearing and is in contact with the inner surface of the gear ring box, and the retainer ring is far away from one side surface of the bearing and is in contact with the end surfaces of the gear shafts.
Furthermore, a plurality of steel wire limiting columns are fixed on one side surface of the gear ring box close to the shifting wheel at intervals along the circumferential direction of the gear ring box, a steel wire traction ring is fixed on one side surface of the plurality of steel wire limiting columns close to the shifting wheel, and one end of the steering steel wire is fixed on the steel wire traction ring.
Furthermore, at least two parallel steering steel wires are arranged in the soft sheath, one end of each two parallel steering steel wires is fixed on one steel wire traction ring, and the front ends of the two steering steel wires are respectively fixed at the positions of 180 degrees in the circumferential direction of the front end of the soft sheath.
Furthermore, a shaft hole is formed in the middle of the shifting wheel, a first sleeve and a second sleeve which are coaxially communicated with the shaft hole of the shifting wheel are respectively fixed on the surfaces of the left side and the right side of the shifting wheel, one end of the damping shaft is coaxially fixed in the first sleeve, one end of the rotating shaft is coaxially fixed in the first sleeve, and the other end of the rotating shaft coaxially penetrates through the shaft hole of the shifting wheel and the second sleeve to be rotatably connected onto the endoscope handle.
Furthermore, a rotating shaft mounting hole is formed in the endoscope handle, and the other end of the rotating shaft is connected into the rotating shaft mounting hole.
the invention has the beneficial effects that: the poking wheel is poked by a hand, the poking wheel drives one end of the rotating shaft and one end of the damping shaft to rotate, the rotating shaft drives the planetary gear mechanism to rotate, and one end of the steering steel wire is driven to rotate, so that the soft sheath is driven to bend, resistance is generated when the two ends of the damping shaft rotate relatively, the resistance is used as a holding force for bending the soft sheath, the soft sheath can be kept in any bending state, and stepless self-locking is realized. The reduction ratio of the planetary gear mechanism is reasonably designed, the shifting wheel rotating at a large angle is converted into small-angle bending of the steering steel wire, so that the bending of the soft sheath is accurately controlled, and meanwhile, the large driving force output of the planetary gear mechanism can be exchanged by outputting smaller driving force to the shifting wheel, so that the aim of saving labor in operation is fulfilled. In the operation process, after the doctor adjusts the soft sheath to the target spot, the thumb wheel is loosened, the soft sheath can stay at the target position, the doctor does not need to keep controlling the thumb wheel all the time, the operation labor intensity of the doctor is reduced, and the operation errors are reduced.
Drawings
FIG. 1 is a perspective view of a stepless self-locking endoscope device according to the present invention;
FIG. 2 is a perspective view of the bend adjustment mechanism of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
The endoscope comprises a handle of an endoscope 1, a working sheath of the endoscope 2 (a hard sheath 2.1, a soft sheath 2.2), a bending adjusting mechanism 3 (a damping shaft 3.1, a stud 3.2, a thumb wheel 3.3, a steel wire traction ring 3.4, a bearing 3.5, a planetary gear retainer 3.6, a rotating shaft 3.7, a planetary gear 3.8, a retainer ring 3.9, a retainer ring 3.10, a gear ring box 3.11, a steering steel wire 3.12, a nut 3.13, a sun gear 3.14, a gear shaft 3.15, a steel wire limiting column 3.16, a first sleeve 3.17, a second sleeve) and a rotating shaft mounting hole 4.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
The endoscope device capable of stepless self-locking as shown in fig. 1 comprises an endoscope handle 1, a hard sheath 2.1 fixed at the front end of the endoscope handle 1 and a soft sheath 2.2 fixed at the front end of the hard sheath 2.1, wherein a bending adjusting mechanism 3 for controlling the bending of the soft sheath 2.2 is arranged on the endoscope handle 1.
As shown in fig. 2-3, the bend adjustment mechanism 3 includes a thumb wheel 3.3, a damper shaft 3.1, a spindle 3.7, and a steering wire 3.11. The shaft hole is opened at the middle part of thumb wheel 3.3, and the left and right sides surface of thumb wheel 3.3 is fixed with a first sleeve 3.16 and a second sleeve 3.17 with the coaxial intercommunication in shaft hole of thumb wheel 3.3 respectively, and the one end coaxial fastening of damping axle 3.1 is in first sleeve 3.16, and the other end is fixed in on endoscope handle 1. One end of the rotating shaft 3.7 is coaxially fixed in the first sleeve 3.16 through the stud 3.2 and the nut 3.12, and the other end coaxially penetrates through the shaft hole of the thumb wheel 3.3 and the second sleeve 3.17 to be rotatably connected to the endoscope handle 1 (as shown in fig. 1, the endoscope handle 1 is provided with a rotating shaft mounting hole 4, the other end of the rotating shaft 3.7 is connected in the rotating shaft mounting hole 4, a bearing can be arranged in the rotating shaft mounting hole 4, and the rotating structure of the rotating shaft 3.7 is further stabilized).
The rotating shaft 3.7 is connected with a planetary gear mechanism, the planetary gear mechanism comprises a sun gear 3.13 coaxially sleeved on the rotating shaft 3.7, a plurality of planetary gears 3.8 meshed with the sun gear 3.13 and a gear ring box 3.10 meshed with the planetary gears 3.8, the planetary gears 3.8 are connected to a planetary gear retainer 3.6, the planetary gear retainer 3.6 is fixed in the endoscope handle 1, a bearing 3.5 is coaxially sleeved on the rotating shaft 3.7, the bearing 3.5 is positioned between the shifting wheel 3.3 and the sun gear 3.13, and one side of the gear ring box 3.10 close to the shifting wheel 3.3 is coaxially sleeved on the bearing 3.5.
A retainer ring 3.9 is arranged in the gear ring box 3.10, the retainer ring 3.9 is positioned between the bearing 3.5 and the plurality of planetary gears 3.8, a plurality of gear shafts 3.14 are fixed on the surface of one side of the planetary gear retainer 3.6 close to the retainer ring 3.9, the plurality of planetary gears 3.8 are respectively coaxially sleeved on the plurality of gear shafts 3.14, the surface of one side of the retainer ring 3.9 close to the bearing 3.5 is in contact with the inner surface of the gear ring box 3.10, and the surface of one side of the retainer ring 3.9 far away from the bearing 3.5 is in contact with the end surface of the gear shaft 3.14.
A plurality of steel wire limiting columns 3.15 are fixed on the surface of one side, close to the thumb wheel 3.3, of the gear ring box 3.10 at intervals along the circumferential direction of the gear ring box, a steel wire traction ring 3.4 is fixed on the surface of one side, close to the thumb wheel 3.3, of the steel wire limiting columns 3.15, two parallel steering steel wires 3.11 are arranged in the soft sheath 2.2, one end of each two parallel steering steel wires 3.11 is fixed on one steel wire traction ring 3.4, and the front ends of the two steering steel wires 3.11 are respectively fixed at the positions, spaced by 180 degrees in the circumferential direction, of the front end of the soft sheath 2.2.
According to the endoscope handle, the thumb wheel is pulled by a hand, the thumb wheel 3.3 drives one end of the damping shaft 3.1 and the rotating shaft 3.7 to rotate, the other end of the damping shaft 3.1 is fixed in the endoscope handle 1, the other end of the rotating shaft 3.7 is connected in the rotating shaft mounting hole 4 and can rotate relatively at the same time, resistance is generated when the two ends of the damping shaft 3.1 rotate relatively, and the resistance becomes self-locking force for keeping the thumb wheel 3.3 and the rotating shaft 3.7 at rotating positions. The planetary gear retainer 3.6 is fixed in the endoscope handle 1, the three planetary gears 3.8 are pressed on the planetary gear retainer 3.6 by retainer rings 3.9 to prevent falling off, the dial wheel 3.3 drives the rotating shaft 3.7 to rotate, the rotating shaft 3.7 drives the sun gear 3.13 to rotate, the sun gear 3.13 drives the three planetary gears 3.8 to rotate at a fixed position, the rotation of the three planetary gears 3.8 drives the gear box 3.10 to rotate, the driven direction is opposite to the driving direction, and a bearing 3.5 is arranged between the rotating shaft 3.7 and the gear box 3.10 to ensure the stability of the rotation of the inner ring and the outer ring.
The outer frame screw of the gear box 3.10 fixes the steel wire traction ring 3.4 on the gear box to form a grooved wheel, and the steel wire traction ring 3.4 rotationally drags the two steering steel wires 3.11 to rotate in the groove. The steel wire limiting column 3.15 of the gear box 3.10 protruding at the groove wheel prevents the steering steel wire 3.11 from being separated, and leads the steering steel wire 3.11 to wind into the groove wheel.
The reduction ratio of the planetary gear mechanism adopted by the invention is 1: a, namely the sun gear 3.13 rotates for A circles, the gear box 3.10 rotates for 1 circle, the driving force of the gear box 3.10 is just inversely proportional to the driven force, the driving force of the sun gear 3.13 is 1N, and the output force of the gear box 3.10 is AN. The driving wheel 3.3 is fluctuated by small driving force, the gear box 3.10 outputs large driving force to drive the steering steel wire 3.11 to rotate, labor-saving operation of bending the flexible sheath 2.2 is realized, meanwhile, the driving structure that the driving wheel 3.3 rotates for a plurality of circles but the gear box 3.10 only outputs one circle realizes fine adjustment of bending the steering steel wire 3.11, operation precision is ensured, self-locking of the driving wheel 3.3 and the rotating shaft 3.7 is formed by combining relative motion generated at two ends of the damping shaft 3.1, so that the steering steel wire 3.11 drives the flexible sheath to be kept at a target position, and accurate operation treatment is implemented.
The above description is only for 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 change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. A stepless self-locking endoscope device comprises an endoscope handle (1), an endoscope working sheath (2) with a soft sheath (2.2) and a bending adjusting mechanism (3) which is arranged on the endoscope handle (1) and can control the bending of the soft sheath (2.2), and is characterized in that: crooked adjustment mechanism (3) are including thumb wheel (3.3), damping axle (3.1), pivot (3.7) and turn to steel wire (3.11), the one end coaxial fixation of damping axle (3.1) is in thumb wheel (3.3), the other end is fixed in on endoscope handle (1), the one end coaxial fixation of pivot (3.7) in thumb wheel (3.3), the other end rotatable connect in on endoscope handle (1), pivot (3.7) are connected with planetary gear mechanism, the one end that turns to steel wire (3.11) is fixed in on planetary gear mechanism's the power take off end, the other end insert in soft sheath (2.2) and with the front end of soft sheath (2.2) is fixed.
2. A steplessly self-lockable endoscope device according to claim 1, characterized in that: planetary gear mechanism is located including coaxial cover sun gear (3.13) in pivot (3.7), with a plurality of planetary gear (3.8) of sun gear (3.13) meshing and with a plurality of ring gear case (3.10) of planetary gear (3.8) meshing are a plurality of planetary gear (3.8) are connected on planetary gear holder (3.6), planetary gear holder (3.6) are fixed in endoscope handle (1), the one end that turns to steel wire (3.11) is fixed in through steel wire traction ring (3.4) on ring gear case (3.10).
3. A steplessly self-lockable endoscope device according to claim 2, characterized in that: coaxial cover is equipped with bearing (3.5) on pivot (3.7), bearing (3.5) are located thumb wheel (3.3) with between sun gear (3.13), ring gear case (3.10) are close to one side coaxial cover of thumb wheel (3.3) is located on bearing (3.5).
4. A steplessly self-lockable endoscope device according to claim 3, characterized in that: be equipped with holder retaining ring (3.9) in ring gear case (3.10), holder retaining ring (3.9) are located bearing (3.5) and a plurality of between planetary gear (3.8), planetary gear holder (3.6) are close to be fixed with a plurality of gear shafts (3.14) on one side surface of holder retaining ring (3.9), it is a plurality of planetary gear (3.8) are coaxial cover respectively locate a plurality of on gear shaft (3.14), holder retaining ring (3.9) are close to one side surface of bearing (3.5) with the internal surface contact of ring gear case (3.10), holder retaining ring (3.9) are kept away from one side surface of bearing (3.5) with the end face contact of gear shaft (3.14).
5. a steplessly self-lockable endoscope device according to claim 1, characterized in that: gear ring case (3.10) are close to one side surface of thumb wheel (3.3) is fixed with a plurality of steel wire spacing posts (3.15) along its circumference interval, a plurality of steel wire spacing posts (3.15) are close to one side of thumb wheel (3.3) is fixed with on the surface steel wire traction ring (3.4), the one end that turns to steel wire (3.11) is fixed in on steel wire traction ring (3.4).
6. A steplessly self-lockable endoscope device according to claim 1, characterized in that: at least two parallel steering steel wires (3.11) are arranged in the soft sheath (2.2), one end of each two parallel steering steel wires (3.11) is fixed on one steel wire traction ring (3.4), and the front ends of the two steering steel wires (3.11) are respectively fixed at the positions of 180 degrees in the circumferential direction of the front end of the soft sheath (2.2).
7. A steplessly self-lockable endoscope device according to claim 1, characterized in that: the shaft hole has been seted up at the middle part of thumb wheel (3.3), the left and right sides surface of thumb wheel (3.3) be fixed with one respectively with first sleeve (3.16) and second sleeve (3.17) of the coaxial intercommunication in shaft hole of thumb wheel (3.3), the one end coaxial fixation of damping axle (3.1) in first sleeve (3.16), the one end coaxial fixation of pivot (3.7) in first sleeve (3.16), the other end coaxial pass the shaft hole of thumb wheel (3.3) with second sleeve (3.17) rotatable connect in on endoscope handle (1).
8. A stepless self-locking endoscope device according to claim 1 or 7, characterized in that: a rotating shaft mounting hole (4) is formed in the endoscope handle (1), and the other end of the rotating shaft (3.7) is connected into the rotating shaft mounting hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899293.4A CN110575116A (en) | 2019-09-23 | 2019-09-23 | Stepless self-locking endoscope device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899293.4A CN110575116A (en) | 2019-09-23 | 2019-09-23 | Stepless self-locking endoscope device |
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| Publication Number | Publication Date |
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| CN110575116A true CN110575116A (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910899293.4A Pending CN110575116A (en) | 2019-09-23 | 2019-09-23 | Stepless self-locking endoscope device |
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| CN (1) | CN110575116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112754403A (en) * | 2020-12-31 | 2021-05-07 | 上海澳华内镜股份有限公司 | Endoscope operation self-locking device and endoscope |
-
2019
- 2019-09-23 CN CN201910899293.4A patent/CN110575116A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112754403A (en) * | 2020-12-31 | 2021-05-07 | 上海澳华内镜股份有限公司 | Endoscope operation self-locking device and endoscope |
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