CN218606545U - Meatus clamping assembly, operation part and electronic endoscope - Google Patents

Abstract

The utility model discloses a vice way mouth subassembly for the operating portion of electron endoscope, operating portion are including epitheca and the inferior valve that can constitute the casing, and vice way mouth subassembly includes vice way mouth tee bend and locates the vice way mouth seat of epitheca, and under operating condition, epitheca, inferior valve, vice way mouth subassembly can constitute a complete casing that has the operating portion of vice way mouth. An operation section and an electronic endoscope are also disclosed, which can reduce the cost.

Description

Meatus clamping assembly, operation part and electronic endoscope

Technical Field

The utility model relates to the field of medical equipment, in particular to pincers way mouth subassembly, operation portion and electronic endoscope.

Background

In the medical field and the industrial field, an electronic endoscope having an elongated insertion portion that can be inserted into a body cavity or a tube is widely used. When endoscopic examination or endoscopic surgery is performed using a medical electronic endoscope, an insertion portion of the endoscope is inserted into a body cavity along a site having a curved shape such as an esophagus or a small intestine or a large intestine, an operator operates an operation portion to bend the bending portion located at a distal end of the insertion portion in different directions, and an observation optical system located at a distal end surface of the insertion portion obtains an image of a desired observation site, whereby the operator can perform observation, diagnosis, imaging, treatment, and the like.

However, the electronic endoscope currently marketed as an interventional therapy device is complicated in structure and expensive, and thus can be reused only. There is a need for an electronic endoscope that can achieve the basic functions of the above-described electronic endoscope as an interventional treatment device, and that is simple in structure and can be manufactured at low cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the structure of an electronic endoscope as an interventional therapy instrument is complex and the cost is too high. The utility model provides an electronic endoscope, which can be used as an interventional therapy apparatus and has simple structure, so that the manufacture with lower cost becomes possible.

In order to achieve the above object, the present invention provides various electronic endoscopes' components, which can individually realize respective functions according to the above object of the present invention, and can be combined to make an electronic endoscope according to the above object of the present invention.

In a first aspect, an embodiment of the present invention provides a jaw opening assembly for an operation portion of an electronic endoscope, wherein the operation portion includes an upper shell and a lower shell which can form a shell, the jaw opening assembly includes a jaw opening three-way member and a jaw opening seat which is arranged on the upper shell, and under an operating state, the upper shell, the lower shell and the jaw opening assembly can form a complete shell with the operation portion of the jaw opening.

The embodiment of the utility model provides a technical scheme can reduce cost.

In a possible implementation of the first aspect, the three-way element of the jaw opening is a three-way oblique element, and is formed by injection molding.

In a possible implementation of the first aspect, the three-way element of the clamp port comprises a main pipe, a branch pipe, a shell and a connecting plate, wherein the shell and the upper shell form a complete upper shell casing after being assembled, and the connecting plate connects the shell, the main pipe and the branch pipe into a whole.

In a possible implementation of the first aspect, the portion of the jaw opening seat that protrudes out of the housing is left with a recess for receiving and supporting the portion of the branch pipe that protrudes out of the housing after assembly.

In a possible implementation of the first aspect, a pipe support is further fixed to the inner wall of the upper shell for supporting the main pipe after assembly.

In a second aspect, an embodiment of the present invention provides an operating portion of an electronic endoscope, including the jaw opening assembly of any of the embodiments of the first aspect. The beneficial effects that can be achieved by the second aspect can be referred to the beneficial effects of the jaw opening assembly provided by any one of the embodiments of the first aspect, and are not described herein again.

In a third aspect, the present invention provides an electronic endoscope, comprising the operation portion according to any one of the second aspect.

Drawings

Fig. 1 is a schematic structural diagram of an electronic endoscope according to an embodiment of the present invention;

FIG. 2 is a schematic view of a distal end face structure of a front end portion of a prior art electronic endoscope;

fig. 3 is a schematic perspective view of an image pickup device protection cover of an insertion portion of an electronic endoscope according to an embodiment of the present invention;

fig. 4 is a schematic view showing the direction of air/water flow of an image pickup device protection cover of an insertion portion of an electronic endoscope according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a distal end portion of an insertion portion of an electronic endoscope according to an embodiment of the present invention;

fig. 6 is a perspective view of an operation portion of an electronic endoscope according to an embodiment of the present invention;

fig. 7 is a perspective view of an operation portion of an electronic endoscope according to an embodiment of the present invention from another angle;

fig. 8 is a perspective view of the internal structure of the operation part with the lower case removed according to the embodiment of the present invention;

fig. 9 is an exploded view of a knob assembly of an operation part according to an embodiment of the present invention;

fig. 10a is a schematic structural diagram of a first gear face according to an embodiment of the present invention;

FIG. 10b is a schematic view of another side of the first gear of FIG. 10 a;

fig. 11a is a schematic structural diagram of one face of a second gear according to an embodiment of the present invention;

FIG. 11b is another schematic view of the second gear of FIG. 11 a;

fig. 12 is a schematic view of the internal structure of the lower shell according to the embodiment of the present invention;

fig. 13 is a schematic view of an internal structure of an upper case according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a three-way member of a jaw opening according to an embodiment of the present invention;

fig. 15 is a mounting state diagram of the connection seat according to the embodiment of the present invention;

fig. 16 is a schematic structural diagram of a connection seat according to an embodiment of the present invention.

Detailed Description

The following description is given for illustrative embodiments of the invention, and other advantages and effects of the invention will be apparent to those skilled in the art from the disclosure of the present invention. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the invention may be practiced without these specific details. Moreover, some of the specific details are omitted from the description so as not to obscure or obscure the focus of the present invention. It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present embodiment, it should be noted that the terms "near" and "far" are relative positional relationships, and when an operator operates an instrument to treat a target object, along the instrument, the side close to the operator is "near" and the side close to the target object is "far".

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

An electronic endoscope (endoscopy) is a medical electronic optical instrument integrating techniques of light collection, machine and electricity, which can be inserted into body cavity and internal organs of human body for direct observation, diagnosis and treatment. The electronic imaging element with very small size is used to image the object to be observed inside the cavity via the miniature objective optical system, the received image signal is sent to the image processing system, and the processed image is output in the display for doctor's observation and diagnosis. The electronic endoscopes are classified into electronic gastroscopes, electronic duodenoscopes, electronic colonoscopes, and the like.

The embodiment of the utility model provides an electronic endoscope and part thereof can regard as above-mentioned live body endoscope such as electronic gastroscope, electronic duodenoscope, electronic colonoscope to use to and any other suitable occasions. That is, the electronic endoscope and its components provided by the embodiments of the present invention can be used in any situation where an endoscope is needed, such as in the industry, as long as the sizes are matched. The following usage scenarios are merely examples and should not be construed as limiting the electronic endoscope provided by the present invention.

Gastroscopy is a medical examination procedure and also refers to the instruments used for such examinations. It is inserted into the stomach by means of a thin and flexible tube, and the doctor can directly observe the pathological changes of esophagus, stomach and duodenum, especially the tiny pathological changes. The gastroscopy can directly observe the real condition of the detected part, can further carry out pathological biopsy and cytology examination on the suspicious lesion part so as to further clearly diagnose, and is a preferred examination method for the upper digestive tract lesion.

When the gastroscope is used for gastric examination, the pathological tissues are amplified, so that doctors can list diseases in the stomach without losing under the condition of very clear visual field, and the gastroscope has no dead angle for examination, no damage and high diagnosis rate. The examination and treatment are safe, the time is short, the patient can not be nervous before the examination, the discomfort is not generated during the examination, the patient can recover quickly after the examination, the examination result of the doctor is more accurate, and the judgment and treatment of the state of an illness are facilitated.

The gastroscope is not only used for detecting and diagnosing diseases, but also has obvious effect on the interventional treatment of stomach diseases. Under the direct vision of gastroscope, the polyp can be directly cut off by using a high-frequency electric knife, so that the pain of the conventional operation is completely avoided, and the malignant change of the polyp is avoided. Electronic gastroscopy has become a very popular diagnostic tool.

However, the electronic endoscope as an interventional therapy instrument or the electronic gastroscope and the electronic enteroscope specially used for stomach and intestine examination sold in the market at present are very expensive. In order to reduce the burden on the patient as much as possible, medical workers can only use the medical device repeatedly by means of manual cleaning. However, even if each procedure is cleaned to exacting requirements, bacteria may remain on these devices and the patient may be infected accordingly. In fact, even in medical institutions with relatively good medical conditions, such as the united states and europe, there have been cases where patients are cross-infected due to repeated use of endoscopes. Worse still, these devices can even cause the spread of drug resistant infections, which are currently under little cure.

Therefore, there is a strong need for an electronic endoscope that can avoid infection due to incomplete cleaning. In addition, it is important that it is also low cost, otherwise it is still unbearable for the patient. Obviously, when the cost is low to a certain degree, the low-cost electronic endoscope can be used as a disposable electronic endoscope, and the problem that the electronic endoscope cannot be thoroughly cleaned to cause secondary infection is thoroughly solved.

The inventor has studied a lot of times, and has understood that the high cost is mainly due to the complex structure of the current electronic endoscope, and the complex structure not only makes the manufacture more difficult, but also increases the requirement of materials.

The utility model provides an electronic endoscope and the corresponding parts that can independently make, use that this electronic endoscope contains. The utility model provides an electronic endoscope improves on structure or material, when satisfying a great deal of basic function as electronic endoscope, still can realize lower cost's production, manufacturing and use, can regard as disposable electronic endoscope to use even.

Fig. 1 is a schematic structural diagram of an electronic endoscope 100 according to an embodiment of the present invention. Fig. 1 shows a structure of an electronic endoscope 100 according to an embodiment of the present invention. The electronic endoscope 100 includes an operation section 200, and an elongated insertion section 300 located on the distal end side of the operation section 200.

Fig. 2 is a schematic view of a distal end surface structure of a distal end portion of a prior art electronic endoscope. Fig. 2 shows a distal end face structure of a front end portion of an electronic endoscope in the related art. As shown in fig. 2, in the prior art, the insertion portion has a distal end portion a located at the most distal end of the insertion portion. The distal end portion a is formed of a hard material. An imaging element b, an illumination element, an air/water supply channel outlet c, and a clamp channel outlet are provided on the distal end surface of the distal end portion a. The air/water supply channel outlet c also has a function of cleaning the outer surface of the imaging element b in addition to air supply or water discharge. A radial line d in fig. 2 shows a state when air/water is ejected from the air/water feeding channel outlet c.

In the related art, a transparent protective glass is provided on the outer periphery of the image pickup device b on the distal end surface of the distal end portion a. The protective glass and the front end part a separate the image pickup element b from the outside at the same time of not influencing the image pickup quality of the image pickup element, so as to prevent external liquid such as human body fluid and the like from permeating into the image pickup element b or a cable connected with the image pickup element b and the like to cause damage. Meanwhile, an air/water supply channel outlet c is provided on the distal end surface of the front end portion a, and is formed by a metal (usually stainless steel) flat tube, protruding from the distal end surface, bent to be parallel to the distal end surface, and facing the image pickup element b. Thus, when the operator operates the air supply or the water supply, the air or the water is supplied to the human body along the air supply/water supply channel outlet c via the endoscope. The air or water can flow out of the air/water supply passage outlet c and clean the protective glasses of the imaging element b. However, the bent flat metal tube is used as the outlet c of the air/water feeding channel, which has high material cost and high processing difficulty. Because the leakproofness is guaranteed, the installation difficulty of installing the bent metal flat pipe at the front end part a is higher. These all result in a relatively high cost of this solution of the prior art.

Fig. 3 is a schematic perspective view of an image pickup device protection cover 310 of an insertion portion 300 of an electronic endoscope 100 according to an embodiment of the present invention. Fig. 4 is a schematic view of the air/water flow direction of the image pickup device protection cover 310 of the insertion portion 300 of the electronic endoscope 100 according to the embodiment of the present invention.

In view of achieving basic functionality and reducing costs, the present invention provides a protective cover 310, which in one embodiment is injection molded from a transparent PC material. The PC material is Polycarbonate (abbreviated as PC), which is a high molecular polymer containing carbonate groups in its molecular chains. An embodiment of the present invention provides a shape of the protective cover 310 similar to a slipper without sole under the toe cap, as shown in fig. 3 and 4, which includes a cover 311, a head 312, and a bending cavity 313 enclosed by the cover 311 and the head 312. A bending chamber outlet 314 is formed above an end of the cover 311 adjacent to the head 312. As shown in fig. 4, the head 312 has a transverse L-shape in a longitudinal cross-sectional view. The top wall of the head 312 is chamfered at an outer side of an end thereof adjacent to the bending chamber outlet 314 to prevent the protective cover 310 from damaging human tissue while moving with the front end 308 in the body cavity. The internal structure of the head 312 is configured to form a tapered outlet (bending cavity outlet 314) from the end away from the cover 311 to the end near the cover 311, or the internal structure depicted as the head 312 is configured to form a tapered outlet at the bending cavity outlet 314 from the end away from the cover 311 to the end near the cover 311. I.e. the cross-sectional area of the outlet 314 of the bending chamber decreases gradually in the air/water flow direction. The embodiment of the present invention provides a protective cap 310 for use in the front end of the insertion portion of an electronic endoscope.

In the embodiment of the present invention, the protection cover 310 is formed by injection molding of a transparent polymer material, wherein the polymer material is a mixture of one or more of PC, PET, PMMA and PS. PC is an abbreviation for Polycarbonate in english and refers to Polycarbonate. PET is an abbreviation for polyethylene terephthalate, english, and refers to polyethylene terephthalate. PMMA is an abbreviation for poly methyl methacrylate, which refers to polymethyl methacrylate. PS is an abbreviation for Polystyrene, english, and refers to Polystyrene.

Fig. 5 is a schematic configuration diagram of the distal end portion 308 of the insertion portion 300 of the electronic endoscope 100 according to the embodiment of the present invention.

The embodiment of the present invention further provides a front end portion 308 for an insertion portion of an electronic endoscope, including the above-mentioned protective cover 310. The front end 308 has an air/water supply channel therein, the distal end surface of which is provided with an image pickup device 309, a protective cover 310 is provided on the distal end side of the image pickup device 309, a cover surface 311 covers the image pickup device 309, and a bending cavity 313 communicates with the air/water supply channel.

As shown in fig. 5, in an embodiment of the present invention, the distal end surface of the front end portion 308 is provided with a concave portion having a shape corresponding to the protection cover 310, an image pickup device 309 is provided below an end of the concave portion corresponding to the cover surface 311 of the protection cover 310, and an end corresponding to the head 312 of the protection cover 310 communicates with the air/water supply passage. In other words, the image pickup device 309 is provided below the end of the recess corresponding to the cover surface 311 of the protective cover 310. The recess is provided such that the installation is completed by merely pressing the protective cap 310 into the recess.

As shown in fig. 4, after the protective cover 310 of the present invention is mounted on the front end portion 308, the bending chamber 313 communicates with the air/water supply passage, and the bending chamber outlet 314 becomes an outlet of the air/water supply passage. In the working state, when the operator operates the air supply or water supply, the air or water flows along the air supply/water supply channel to the bending cavity 313, turns in the bending cavity 313, and then flows out from the bending cavity outlet 314. Since the protective cover 310 is transparent, the imaging quality of the image pickup element 309 is not affected; further, since the bending chamber outlet 314 faces the cover surface 311 covering the image pickup device 309, the cover surface 311 can be cleaned and cleaned by air or water in the air or water supply state.

Furthermore, the utility model provides a safety cover 310 is formed by PC material injection moulding, and material cost is low on the one hand, and on the other hand simple structure, forming process are also simple, low in production cost. The installation is finished by pressing the concave part, and the installation process is simple and the installation cost is low.

Fig. 6 and 7 show the external configuration of the operation unit 200 of the electronic endoscope 100 according to the embodiment of the present invention from different angles.

Fig. 6 is a perspective view of an operation unit 200 of the electronic endoscope 100 according to the embodiment of the present invention. Fig. 7 is a perspective view of the operation unit 200 of the electronic endoscope 100 according to another angle.

As shown in fig. 6 and 7, the operation portion 200 extends from the proximal end to the distal end in a substantially tapered shape. The distal end of the operation portion 200 is provided with a first sheath 206, and the operation portion 200 communicates with the insertion portion 300 through the first sheath 206.

The operation part 200 has an upper shell 214 and a lower shell 201, and a jaw opening assembly including a jaw opening seat 218 and a jaw opening tee 211 provided on the upper shell 214 and a jaw opening cap 212 for closing the jaw opening is provided on the upper shell 214 at a position close to the first sheath 206. As will be understood by those skilled in the art, a jaw channel herein refers to a working channel or an instrument channel, i.e., a channel of an instrument that an operator extends to the front end of an insertion portion of an electronic endoscope through the guidance of the electronic endoscope to perform various diagnostic or therapeutic operations.

As further shown in fig. 6 and 7, a first knob 216 and a second knob 215 are provided on one surface of the upper case 214, which are rotatable relative to the upper case 214 and are coaxial with each other. One side of the lower shell 201 is provided with a connecting seat 208 and a second sheath 207 communicated with the connecting seat 208. Various pipes in the operation part 200, such as an optical path, a water path, an air path or an electric path, are connected to an external device through a hollow connection socket 208 and a second sheath 207.

On the side wall of the complete housing formed by the upper case 214 and the lower case 201, a button 213 is provided. In this embodiment, there are two buttons 213, namely a first button 2131 and a second button 2132, where the first button 2131 is used to control the on/off of a negative pressure pipeline, and the negative pressure pipeline is connected to a negative pressure generating device outside the electronic endoscope 100; the second button 2131 is used for controlling the on/off of an air path and/or a water path, and the air path and/or the water path are connected with an air supply and/or water supply device outside the electronic endoscope 100.

The side wall of button 213 may be opposite to the side of the opening of second sheath 207 so as to prevent the operator's hand from being affected by the various conduits passing through connection block 208 and second sheath 207 when operating button 213.

The embodiment of the utility model provides a knob subassembly for electronic endoscope's operation portion 200, operation portion 200 include as the epitheca 214 of casing, and the knob subassembly is according to by the outside inside order of casing, including setting gradually and coaxial first knob 216, second knob 215, second gear 204, first gear 203, and wherein, first knob 216 can drive first gear 203 rotatory, and second knob 215 can drive second gear 204 rotatory, and second gear 204 and first gear 203 are located the casing.

Further described with reference to the drawings, fig. 8 is a perspective view of the internal structure of the operating portion 200 with the lower case 201 removed. Fig. 9 is an exploded view of the knob assembly of the operation part 200. Fig. 10a is a schematic structural diagram of a first gear face according to an embodiment of the present invention; FIG. 10b is a schematic view of another side of the first gear of FIG. 10 a; fig. 11a is a schematic structural diagram of one face of a second gear according to an embodiment of the present invention; fig. 11b is a schematic structural view of the other surface of the second gear of fig. 11 a.

Referring to fig. 8, as shown in fig. 9, the operation unit 200 includes a knob assembly including, in order from the outside of the housing to the inside, a first knob 216, a second knob 215, a second gear 204, and a first gear 203. Except for the transmission part, a first knob 216 and a second knob 215 are arranged outside the shell; the second gear 204 and the first gear 203 are provided in the housing. In the operating portion 200 provided by the present invention, the housing is formed by the upper shell 214 and the lower shell 201.

The first and second knobs 216, 215 have gear shafts 2161, 2151, respectively, that extend in a direction inward of the housing. The gear shaft 2151 of the second knob 215 is hollow and is penetrated by the gear shaft 2161 of the first knob 216. A screw hole 2162 is provided at the top end of the gear shaft 2161 of the first knob 216.

Referring specifically to fig. 8 and 9, as shown in fig. 10a, 10b, 11a and 11b, the second gear 204 and the first gear 203 are respectively provided with a lower circular ring 2041, 2031 on one side facing the outside direction of the housing (i.e., upward in fig. 10b and 11b, downward in fig. 10a and 11 a), an inner circular ring 2042, 2032 and an outer circular ring 2043, 2033 on one side facing the inside direction of the housing (i.e., downward in fig. 10b and 11b, upward in fig. 10a and 11 a), and each outer circular ring is provided on the outside of each corresponding inner circular ring. Wherein, the lower ring 2041 is communicated with the inner ring 2042, and the lower ring 2031 is communicated with the inner ring 2032. The lower ring 2041 is provided with an axially extending slot 2044 for axially inserting the teeth of the gear shaft 2151 so that the second gear 204 rotates with the rotation of the second knob 215. The first gear 203 has internal teeth 2034 (internal teeth 2034 may also be provided in the communication channel between the lower ring 2031 and the inner ring 2032) on the inner circumference thereof for engaging with the pinion shaft 2161 to rotate the first gear 203 with the rotation of the first knob 216. The inner ring 2032 and the outer ring 2033 of the first gear 203, and the inner ring 2042 and the outer ring 2043 of the second gear 204 are the same in height, and the lower ring 2031 of the first gear 203 is higher than the inner ring 2042 and the outer ring 2043 of the second gear 204, and has a diameter smaller than the diameter of the outer ring 2043 and larger than the diameter of the inner ring 2042.

The second gear 204 and the first gear 203 are described separately, that is, a lower circular ring 2041 is disposed on one side of the second gear 204 facing the outer direction of the housing, and a slot 2044 extending along the axial direction is disposed on the lower circular ring 2041 of the second gear and is used for axially inserting with the longitudinal teeth on the gear shaft 2151 of the second knob 215 so that the second gear 204 rotates along with the rotation of the second knob 215. An inner circular ring 2042 is arranged on one side of the second gear 204 facing the inner direction of the shell, the lower circular ring 2041 of the second gear 204 is communicated with the inner circular ring 2042 to form a second channel, and a gear shaft 2161 of the first knob 216 passes through the hollow gear shaft 2151 of the second knob 215 and the second channel and then is connected with the first gear 203 to drive the first gear 203 to rotate.

The first gear 203 has a lower ring 2031 on one side facing the outside of the housing, and an inner ring 2032 on one side facing the inside of the housing, the lower ring 2031 of the first gear 203 communicates with the inner ring 2032 to form a first passage, and internal teeth 2034 are provided in the first passage for meshing with the pinion shaft 2161 of the first knob 216, so that the first gear 203 rotates with the rotation of the first knob 216.

In the assembled state, the gear shaft 2161 of the first knob 216 passes through the gear shaft 2151 of the second knob 215, the upper shell 214, the lower ring 2041 of the second gear 204, and the inner ring 2042 of the second gear 204 in sequence, enters the lower ring 2031 of the first gear 203, and then meshes with the internal teeth 2034. In this state, the gear shaft 2151 of the second knob 215 passes through the upper case 214 and enters the lower ring 2041 of the second gear 204, and at this time, the outer teeth of the gear shaft 2151 extending in the axial direction are inserted into the slots 2044 of the lower ring 2041 of the second gear 204.

Wherein, the upper shell 214 is provided with a corresponding opening 2142 for the gear shaft 2151 of the second knob 215 to pass through, and this opening 2142 allows the gear shaft 2151 to rotate therein. A shaft sleeve 2143 extending into the housing is disposed at the opening 2142. The length of the gear shaft 2151 is set such that when the gear shaft 2151 extends into the opening 2142, the top of the gear shaft 2151 substantially coincides with the height of the shaft sleeve 2143, i.e., the insertion point of the axially extending external teeth on the gear shaft 2151 and the insertion slot 2044 is located inside the shaft sleeve 2143. With this compact design, not only is space saved, but the bushing 2143 simultaneously achieves radial positioning of the gear shaft 2151 and the lower ring 2041, and thus of the second knob 215 and the second gear 204. The interconnecting hollow gear shaft 2151 of the second knob 215 and the inner ring 2042 of the second gear 204 then effect radial positioning of the first knob 216 by limiting the radial positioning of the gear shaft 2161 of the first knob 216.

In a state of complete assembly, the tip end of the gear shaft 2161 of the first knob 216 is substantially flush with the height of the inner circular ring 2032 of the first gear 203. At this time, only a bolt needs to be installed on the screw hole 2162, and as long as the diameter of the bolt head is larger than that of the inner circular ring 2032, or a stop ring with a diameter larger than that of the inner circular ring 2032 is additionally installed between the screw hole 2162 and the bolt head, the first knob 216, the second knob 215, the upper shell 214, the second gear 204 and the first gear 203 can be stably installed in a low-cost manner. In other words, the top end of the gear shaft 2161 of the first knob 216 is provided with a screw hole 2162, and the length of the gear shaft 2161 of the first knob 216 is set such that the top end of the gear shaft 2161 of the first knob 216 is flush with the top end of the inner circular ring 2032 of the first gear 203 when the assembly is completed.

In the present embodiment, the heights of the inner ring 2032 and the outer ring 2033 of the first gear 203 and the heights of the inner ring 2042 and the outer ring 2043 of the second gear 204 are the same, the height of the lower ring 2031 of the first gear 203 is greater than the heights of the inner ring 2042 and the outer ring 2043 of the second gear 204, and the diameter of the lower ring 2031 is smaller than the diameter of the outer ring 2043 and greater than the diameter of the inner ring 2042. In this way, the second gear 204 may support the first gear 203 in an axial direction without interference therebetween when the first gear 203 and the second gear 204 rotate with the first knob 216 and the second knob 215, respectively.

It will be appreciated by those skilled in the art that by designing the shapes of the first and second knobs 216 and 215, the first and second gears 203 and 204 to be the same or similar as much as possible, the cost can be reduced in the manufacturing process.

As shown in fig. 10a and 11a, locking grooves 2035, 2045 with openings are provided on the circumferential walls of the outer rings 2033, 2043 of the first and second gears 203, 204. That is, the ring walls of the outer rings 2033 and 2043 of the first and second gears 203 and 204 are provided with locking grooves 2035 and 2045 with openings in the same direction. In an initial state of assembly completion, the opening is directed distally in preparation for snapping into the line card of the connection harness. In this embodiment, the card slots 2035 and 2045 are used for placing line cards to which the wiring harness is fixed. During assembly, one end of a wire harness penetrates through the wire clamp, and the wire clamp is pressed to deform the wire clamp so as to clamp the wire harness in the wire clamp; the wire cards are then clamped into the card slots 2035 and 2045, and the portion of the wire harness extending out of the wire cards passes through the openings of the card slots 2035 and 2045. Thus, when the knob is rotated, the gear is driven to rotate, when the gear is rotated, the clamping groove on one side moves towards the near end to pull the wire harness on the other side, and the clamping groove on the other side moves towards the far end to enable the wire harness on the other side to be loosened. The distal end tip of pencil is fixed in the distal end of the flexion of inserted part, draws the pine of just can driving the pencil distal end to draw the pine to the one of pencil near-end like this to the realization is to the bending control of the flexion of inserted part.

The ring walls of the outer rings 2033 and 2043 can play a role in reinforcing the clamping grooves 2035 and 2045, and when the first gear 203 and the second gear 204 rotate, the ring walls of the outer rings 2033 and 2043 play a role in supporting the wiring harness, that is, the control of the transmission ratio of the wiring harness can be realized by setting the outside diameters of the outer rings 2033 and 2043. Further, if there is no outer ring 2033, 2043 or the outside diameter of the outer ring 2033, 2043 is too small, although the function of controlling the wire harness can be achieved, there is also a problem in that: when the first gear 203 and the second gear 204 rotate, the wire harness is pulled by the clamping groove on one side, the distance between the wire harness and the axis of the gear is reduced and even touches the inner rings 2032 and 2042 while the proximal end of the wire harness rotates along with the clamping groove, and undesirable effects may be caused.

Fig. 12 is a schematic view of the internal structure of the lower case 201. As shown in fig. 12, a lower locking post 2091 is provided on the inner wall of the lower case 201; as shown in fig. 8, an upper locking post 2092 is provided on the inner wall of the upper shell 214. Referring to fig. 9, the lower locking post 2091 is positioned to engage the outer teeth of the first gear 203 and the upper locking post 2092 is positioned to engage the outer teeth of the second gear 204. When the first gear 203 is driven by the first knob 216, it is rotated against the resistance of the lower locking post 2091 against one external tooth of the first gear 203, and after the first gear 203 has rotated one tooth relative to the lower locking post 2091, the rotation is stopped by the resistance of the lower locking post 2091 against the next tooth. The same mating relationship applies to the second gear 204 and the upper locking post 2092.

The inventor desires that the knob be easily turned (easy to handle) and that the lock cylinder be able to effectively fix the position of the gear (easy to maintain the bent form of the insertion portion). In order to balance the ease with which the operator can operate the knob with the robustness of the lock cylinder, the inventors have found that it is advantageous to provide the gear or lock cylinder with suitable properties for elastic deformation. This can be considered in the choice of materials and design of the structure, which must then also be low-cost.

The inventor selects a mode of sleeving an elastic component on the locking column to realize the balance through a large amount of experiments. In order to meet the requirement of low cost, the inventor adopts the design that the PU pipe is sleeved on the locking column. After trial, the operator can realize the balance state, and the low-cost material is adopted, so that the low-cost installation and manufacture are realized. PU (polyurethane) is a high molecular compound and is called polyurethane. That is, the upper locking column 2092 and/or the lower locking column 2091 are sleeved with PU tubes.

Continuing to fig. 8, the inner wall of the upper shell 214 is also provided with a wiring harness passage 220.

The electronic endoscope 100 according to the present invention is configured to realize bending of the insertion portion 300 by operating the knob of the operation portion 200 to extend and contract the wire harness connected between the operation portion 200 and the insertion portion 300. This is undoubtedly a low cost and efficient control.

However, the wire harness is soft, and it seems difficult to restrain its course in a relaxed state. In order to prevent the wire harness from interfering with other components inside the case of the operation part 200 in a loose state, the present invention provides a wire harness passage 220. The embodiment of the utility model provides an epitheca 214 as casing for electronic endoscope's operation portion 200 is equipped with pencil passageway 220 on the inner wall of epitheca 214, and pencil passageway 220 comprises two first risers 2201 that are fixed in on the epitheca 214 inner wall and mutual parallel arrangement. The embodiment of the utility model provides an operating portion for electronic endoscope, including inferior valve 201 and above-mentioned epitheca 214, a casing is constituteed to epitheca 214 and inferior valve 201, and the position department that highly equals first riser 2201 of pencil passageway 220 is by the height of the inner space that the casing encloses, can utilize the casing just can prevent that the pencil from breaking away from the pencil passageway after the assembly is accomplished like this at the position department of first riser 2201 of pencil passageway 220.

As shown in fig. 8, the wire harness passage 220 is formed by two first vertical plates 2201 fixed on the inner wall of the upper shell 214 and arranged in parallel with each other. Such a design seems simple, but has several technical effects as follows. First, the first vertical plates 2201 arranged in parallel with each other can effectively limit the position of the wire harness in the left-right direction, and at the same time, enough space is reserved in the up-down direction for the up-down layering and bending deformation of the wire harness respectively connecting the first gear 203 and the second gear 204, and obviously, the wire harness is guided to be bent and deformed in a desired space by utilizing the characteristic that the wire harness is soft. Secondly, such a design may achieve a low cost objective. The low cost design described herein allows for a simple riser construction in one aspect, yet provides for quick and easy installation.

In another embodiment, a screw hole column 2202 is disposed on the inner wall of the upper case 214, and the first vertical plate 2201 of the wire harness passage 220 and the screw hole column 2202 are in an integral structure, so that the screw hole column 2202 can be used to facilitate the installation of the upper case and the lower case, and the first vertical plate 2201 is more stable.

As shown in fig. 8, a second vertical plate 2211 extending along the outer side wall of the housing is provided on the inner wall of the housing at the proximal end of the housing of the operation portion 200, i.e., the end away from the first sheath 206, and the second vertical plate 2211 and the outer side wall of the upper housing 214 enclose a passage 221. In this embodiment, a plurality of buttons 2212 are disposed on the housing along the channel 221, and the control circuit board 210 extending along the channel 221 is disposed in the channel 221, so that when the button 2212 is pressed by an operator, the control circuit board 210 can be triggered to implement a corresponding function.

The embodiment of the utility model provides a pair of pincers way mouth subassembly for electronic endoscope's operation portion 200, operation portion 200 is including the epitheca 214 and the inferior valve 201 that can constitute the casing, and pincers way mouth subassembly includes pincers way mouth tee bend 211 and locates the pincers way mouth seat 218 of epitheca 214, and under operating condition, epitheca 214, inferior valve 201, pincers way mouth subassembly can constitute a complete casing that has the operation portion of pincers way mouth.

Fig. 13 is a schematic diagram of the internal structure of the upper case 214. Fig. 14 is a schematic structural diagram of a three-way member 211 of a gate of a clamp according to an embodiment of the present invention.

As shown in fig. 13, the upper shell 214 is provided with a jaw port seat 218 for cooperating with a jaw port tee 211 (shown in fig. 14) to achieve a quick and secure installation. The state of attachment of the jaw opening tee 211 to the jaw opening seat 218 can be understood from fig. 6 and 7.

As shown in FIG. 14, the three-way jaw port 211 is a three-way oblique member, which is formed by injection molding and includes a main tube 2111, branch tubes 2112, a housing 2113, and a connecting plate 2114. Wherein the housing 2113 forms a complete upper housing with the upper housing 214 after assembly, and the connecting plate 2114 connects the housing 2113, the main tube 2111 and the branch tubes 2112 into a single unit.

As shown in FIG. 13, the jaw opening mount 218 is integrally injection molded with the upper housing 214, and the portion of the jaw opening mount 218 that extends outwardly from the housing is provided with a recess 2181 for receiving and supporting the portion of the branch 2112 that protrudes from the housing 2113 after assembly, which facilitates quick positioning during assembly. Also secured to the inner wall of upper housing 214 is a tube support 2141 for supporting main tube 2111 after assembly.

Based on the foregoing description, it can be appreciated by those skilled in the art that the present invention is designed such that an operator can control the bending of the insertion portion by simply rotating the knob. In order to save costs, this procedure employs a flexible harness to transmit the steering force, and the harness is flexible and runs almost entirely through the electronic endoscope 100 from the operation section 200 to the insertion section 300. In contrast, when the wire harness is assembled to the insertion portion 300, only the corresponding wire harness passage needs to be inserted, and in the operation portion 200, not only the stable operation and control are ensured by the movement of the wire harness, but also the operation and control are prevented from being influenced or interfered with other components due to the undesired movement or bending of the wire harness, and meanwhile, the simple structure is considered as possible, and the assembly efficiency is improved to reduce the cost. In this case, how to design the connection and the routing of the wiring harness is crucial.

According to the present invention, the present invention is directed to the description of the present embodiment and other embodiments, and the structural design of the operation portion 200 provided by the present invention can satisfy the above requirements.

As can be understood from the above drawings and components, when assembling the operation part 200, an injection molded upper case 214 and an insertion part 300 of a wire harness at a proximal end portion thereof are first provided; the proximal end of the wire harness penetrates through the first sheath 206 and the wire clip, and after the proper length of the wire harness is reserved, the wire clip is pressed to deform the wire clip so as to clamp the wire harness in the wire clip; the wire clip is clamped into the clamping grooves 2035 and 2045, and the part of the wire harness extending out of the wire clip is pressed into the openings of the clamping grooves 2035 and 2045 and the wire harness channel 220, so that the assembly of the wire harness in the operation part 200 is completed.

The utility model provides an operation portion 200's structure has fast and stable's effect equally to arranging in gas circuit, water route.

Fig. 15 is a diagram illustrating an installation state of connection seat 208 according to an embodiment of the present invention. Fig. 16 is a schematic structural diagram of a connection seat 208 according to an embodiment of the present invention.

As shown in fig. 15 and 16, the connection seat 208 includes a pipe fitting 2084 and a mounting disc 2081, a lug 2082 is disposed on a side of the mounting disc 2081, and a screw hole is disposed on the lug 2082. A square step 2083 is arranged on one side of the mounting plate 2081 facing the pipe 2084. As shown in fig. 12, the lower case 201 is provided with a square opening 2011 through which the connection holder 208 passes. The outer profile of the square step 2083 is the same as the profile of the square opening 2011 on the lower shell 201, and the outer profile of the mounting plate 2081 is larger than the outer profile of the square step 2083.

Based on the foregoing description, the structural design of the operating part 200 is very important to achieve quick and reliable installation of the wire harness, and likewise, the structural design of the operating part 200 is also important to achieve quick and reliable installation of the air/water path (typically, air/water pipe).

As can be understood from the above drawings and components, when assembling, the lower shell 201 is provided, the air/water pipe passes through the square opening 2011, and then the air/water pipe passes through the connecting seat 208; at this time, the pipe 2084 of the connecting seat 208 penetrates through the square opening 2011 from inside to outside, the step 2083 is clamped at the edge of the square opening 2011, and as shown in fig. 15, the mounting disc 2081 and the lower shell 201 are fixed through the screw hole on the lug 2082.

Next, as shown in fig. 8, the upper shell 214 is provided, the air/water pipe is connected to the corresponding pipe portion of the first button 2131 and the second button 2132 to control the air/water passage by the first button 2131 and the second button 2132, the air/water pipe is passed through the main pipe 2111 of the three-way jaw opening piece 211 and the first sheath 206, and the three-way jaw opening piece 211 and the first sheath 206 are placed at the corresponding position of the upper shell 214, so that the assembly is completed.

Those skilled in the art can understand that, by the structural design of the operation portion 200 of the present invention, the whole assembly process can be summarized as: firstly, soft components (such as wiring harnesses, water pipes and air pipes) penetrate through scattered components with simple structures, and then the scattered components with simple structures are installed on an upper shell 214 with the most complex structure; at the same time, the portions of the flexible member that expose the structurally simple discrete components can also be easily placed in corresponding locations on the upper case 214 (these locations are substantially open structures).

The above-described components, which are simple in structure, are easy to manufacture and easy to take and hold. For the wire harness, the structurally simple scattered parts may include a first gear 203, a second gear 204, a first sheath 206, and the like; for the air pipe and the water pipe, the simple structure of the discrete parts can comprise a connecting seat 208, a lower shell 201, a three-way piece 211 of a clamp passage port, a first sheath 206 and the like. The open structure is a structure having an opening, such as the channel 221, the groove 2035, the groove 2045, the harness channel 220, and the tube holder 2141.

It is apparent that such a structure can make the assembling efficiency high. The complicated structure is concentrated on one part (the upper case 214), and the simple structural design of the parts other than the upper case 214 can realize the integral injection molding, so that the material cost and the production cost of the parts of the operating part 200 can be sufficiently reduced.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (7)

1. The utility model provides a jaw mouth subassembly for the operation portion of electronic endoscope, the operation portion is including the epitheca and the inferior valve that can constitute the casing, its characterized in that, jaw mouth subassembly includes jaw mouth tee bend and locates the jaw mouth seat of epitheca, under operating condition, a complete casing that has the operation portion of jaw mouth can be constituteed to epitheca, inferior valve, jaw mouth subassembly.

2. The jaw opening assembly of claim 1 wherein said jaw opening tee is a tee, integrally injection molded.

3. The berm port assembly of claim 1, wherein the berm port tee comprises a main pipe, a branch pipe, a shell, and a connecting plate, wherein the shell forms a complete upper shell body with the upper shell after assembly, and the connecting plate connects the shell, the main pipe, and the branch pipe into a whole.

4. The jaw opening assembly of claim 3 wherein the portion of the jaw opening seat that extends outwardly of the housing is provided with a recess for receiving and supporting the portion of the branch tube that projects from the housing after assembly.

5. The jaw opening assembly of claim 3 wherein a tube support is further secured to the inner wall of the upper shell for supporting the main tube after assembly.

6. An operating portion of an electronic endoscope, comprising the jaw opening assembly of any one of claims 1-5.

7. An electronic endoscope comprising the operating portion according to claim 6.

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