CN112603246A

CN112603246A - Bronchus endoscope

Info

Publication number: CN112603246A
Application number: CN202011541397.7A
Authority: CN
Inventors: 吴鑫伟; 王彩娟; 黄佳锦; 皇甫惠鑫; 郑佳云
Original assignee: Hangzhou Tonglu Medical Optical Instrument Co ltd
Current assignee: Hangzhou Tonglu Medical Optical Instrument Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-04-06

Abstract

The invention relates to a bronchial endoscope, which comprises a three-way pipe, an outer lens pipe, an inner pipe, an eyepiece sleeve, an eyepiece shell and an objective system, wherein a connecting seat is arranged in the three-way pipe, an eyepiece barrel is arranged in the eyepiece sleeve, a diaphragm is arranged in the eyepiece barrel, a first light guide joint, a second light guide joint, a third light guide joint and a light guide joint sleeve which are clamped with the three-way pipe are arranged at the lower part of the three-way pipe, the objective system comprises a second lens, a third lens, a fourth lens and a plurality of rod lens groups, a first spring ring is arranged between the second lens and the third lens, a second spring ring is arranged between the fourth lens and the nearest rod lens group, each rod lens group comprises a first rod lens and a second rod lens which are connected, a fourth spring ring is arranged between two adjacent first rod lenses, and a third spring ring is arranged between two adjacent. The invention has compact structure and reasonable design, can accommodate more longer rod lenses and improve the length of the objective lens, thereby avoiding the damage of the soft lens caused by the contact of the hard lens and the soft lens which possibly occurs and being more convenient to operate.

Description

Bronchus endoscope

Technical Field

The invention belongs to the field of endoscopes, and particularly relates to a bronchial endoscope.

Background

The bronchus endoscope is a medical instrument which is placed in the lower respiratory tract of a patient through mouth or nose, is used for observing lung lobe, segment and sub-segment bronchial lesions, sampling biopsy, examining bacteriology and cytology, and can be used for photographing, teaching and dynamically recording by matching with a TV system. The biopsy sampling accessory connected can assist in finding early lesions and can be used for internal and external surgical operations such as polyp removal and the like. It is suitable for the research of bronchial and pulmonary diseases and the operation of postoperative examination. Most of the existing bronchial endoscopes are similar in structure, and the internal structure is old, so that the size of an objective lens part is large. The bronchoscope is divided into two types, one is a soft lens and the other is a hard lens, and when the bronchoscope is used, the hard lens and the soft lens are required to be matched through inserting a tube sheath. At present, the price of soft lenses is much higher than that of hard lenses, and some hundreds of thousands or even millions of lenses are used. The diameter of the sheath used for fixing operation is fixed, so that the operation is difficult due to the excessively thick objective lens tube on the hard lens, the soft lens is damaged by carelessness, large loss is caused, the lengths of the existing hard lens and the existing soft lens are mostly close, and the rear ends of the hard lens and the soft lens are easy to stagger during operation. At present, a better solution is to arrange a longer objective tube, so that the bronchoscope and the soft lens instrument are staggered, and the possibility of touch shielding of the bronchoscope and the soft lens instrument is reduced. The longer objective tube means that a rod lens with a long stalk needs to be arranged, the rod lens with the long stalk is easy to break when in use, and if a plurality of connected rod lenses are used for conducting imaging, the rod lenses are easy to be aligned and have imaging distortion, so that the conventional bronchus endoscope is difficult to realize longer and thinner in the same time and ensure the imaging effect.

Disclosure of Invention

It is an object of the present invention to overcome the above-mentioned deficiencies of the prior art and thereby provide a bronchoscope.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a bronchial endoscope, includes tee bend pipe fitting, connects the mirror outer tube at tee bend pipe fitting front end and sets up the eyepiece shell at eyepiece sleeve tail end at the eyepiece sleeve of tee bend pipe fitting tail end, threaded connection, opens on the eyepiece shell and has the visual groove, its characterized in that at the mirror outer tube of tee bend pipe fitting front end: a connecting seat is arranged in the three-way pipe fitting, and a mirror channel, a movable groove and a seat groove which are connected in sequence are arranged in the connecting seat; an eyepiece barrel with the front end positioned in the seat groove and the tail end clamped with the eyepiece sleeve is arranged in the eyepiece sleeve, and a diaphragm and an eyepiece groove which are connected are arranged in the eyepiece barrel; the lower part of the three-way pipe is provided with a first light guide joint clamped with the three-way pipe, a second light guide joint in threaded connection with one end of the first light guide joint, a third light guide joint in threaded connection outside the second light guide joint and a light guide joint sleeve sleeved outside the third light guide joint, a light guide nozzle is arranged in the first light guide joint, a light cone is arranged in the second light guide joint, a light guide interface and a connecting thread arranged outside the light guide interface are arranged on the light guide joint sleeve, and the axes of the light guide nozzle, the light cone and the light guide interface are coincided; the lens system comprises a front-end protection plate, a first lens, a flat lens, a second lens, a third lens, a fourth lens, a plurality of rod lens groups, a first ocular lens, a second ocular lens and a T-shaped protection plate, wherein the axes of the front-end protection plate are overlapped; the rod lens group at the tail end penetrates through the lens channel, one end of the rod lens group is positioned in the lens channel, the end of the rod lens group is sleeved with a lens pressing barrel, an adjusting spring is arranged between the lens pressing barrel and the eyepiece barrel, and two ends of the adjusting spring are respectively abutted against the lens pressing barrel and the eyepiece barrel; the first ocular and the second ocular are arranged in the ocular groove from inside to outside, the front end of the first ocular is connected with the diaphragm, and the T-shaped protection sheet is arranged in the viewing groove; the rod mirror group comprises a first rod mirror and a second rod mirror which are connected in a matched mode, any adjacent rod mirror groups are symmetrically arranged, a fourth spring ring is arranged between every two adjacent first rod mirrors, and a third spring ring is arranged between every two adjacent second rod mirrors.

Furthermore, the front end protection sheet is a sapphire protection sheet.

Furthermore, the first lens, the second lens, the third lens and the fourth lens are all penta-cemented prisms.

Furthermore, an eyepiece seat is sleeved outside the eyepiece barrel, a fixed cylinder is sleeved outside the eyepiece seat, and the fixed cylinder enables the eyepiece barrel to form limit relative to the eyepiece sleeve through a fixing screw.

Furthermore, a gasket sleeved outside the first light guide joint is arranged between the first light guide joint and the second light guide joint, and the outer side of the gasket is abutted against the inner side of the three-way pipe fitting.

Furthermore, the outer side of the first lens is sleeved with an object pad which is propped against the inner side of the inner tube.

Further, the number of the rod mirror groups is 9.

Furthermore, one end of the eyepiece barrel is provided with an arc groove.

Compared with the prior art, the invention has the following advantages and effects: the structure is compact, the design is reasonable, more longer rod lenses can be accommodated, and the length of the objective lens is improved, so that the damage of the soft lens caused by the contact of the hard lens and the soft lens which possibly occur is avoided, and the operation of the hard lens and the soft lens is more convenient; the rod lens groups are connected with adjacent lenses by spring rings, so that the objective lens structures in the inner cylinder are easier to align, the whole length is not easy to deform, the imaging distortion is small, and the visual effect is good; each rod lens group is conducted through the matching of the two rod lenses, so that the imaging of the rod lens group cannot be conducted bilaterally, the loss rate and the distortion rate of image multi-transmission are reduced, and the production cost is saved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the invention.

Fig. 2 is an enlarged view of the left portion of fig. 1.

Fig. 3 is an enlarged view of the right portion of fig. 1.

Fig. 4 is a schematic structural diagram of an objective lens system in an embodiment.

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element 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.

Examples are given.

As shown in fig. 1-3, the three-way pipe fitting 1 of the present embodiment, an outer lens tube 2 connected to the front end of the three-way pipe fitting 1, an inner tube 21 sleeved in the outer lens tube 2, an eyepiece sleeve 31 screwed to the tail end of the three-way pipe fitting 1, an eyepiece shell 32 screwed to the tail end of the eyepiece sleeve 31, and an objective system. A connecting seat 11 is arranged in the three-way pipe fitting 1, and a mirror channel 12, a movable groove 13 and a seat groove 14 which are connected in sequence are arranged in the connecting seat 11 from the front end to the tail end of the three-way pipe fitting 1. An eyepiece barrel 33 is arranged in the eyepiece sleeve 31, the front end of the eyepiece barrel 33 is positioned in the seat groove 14, and the tail end of the eyepiece barrel 33 is clamped with the eyepiece sleeve 31 to form fixation relative to the eyepiece sleeve 31. The eyepiece barrel 33 is sleeved with an eyepiece mount 34, and one end of the eyepiece mount 34 is located in the seat groove 14 and matched with the seat groove 14. The eyepiece mount 34 is not sleeved with an eyepiece fixing barrel 35 at one end of the mount groove 14, the eyepiece fixing barrel 35 is provided with a fixing screw 36, and the eyepiece fixing barrel 35, the eyepiece mount 34 and the eyepiece barrel 33 are fixed together through the fixing screw 36, so that the three are fixed between the eyepiece sleeve 31 and the connecting seat 11. Eyepiece barrel 33 one end is equipped with eyepiece groove 63, eyepiece shell 32 one end is equipped with the arc groove 37 of inside sunken formation and runs through eyepiece shell 32 look groove 38, from looking groove 38 one end and looking to the front end and see can pass eyepiece barrel 33 in proper order, eyepiece sleeve 31, connecting seat 11, the image in inner tube 21 the place ahead is seen to inner tube 21, cooperate more easily between arc groove 37 and the rear end image output equipment, bigger space, the difficult touching that appears between the equipment, can play the effect of protective apparatus.

As shown in fig. 1 to 4, the objective lens system includes a front end protection sheet 41, a first lens 42, a flat lens 43, a second lens 44, a third lens 45, a fourth lens 46, a plurality of rod lens sets 47, a first eyepiece 48, a second eyepiece 49, and a T-shaped protection sheet 40, which are coaxially overlapped, wherein the front end protection sheet 41 is fixed at the front end of the inner tube 21, so that the objective lens system is fixed in the inner tube 21 while protecting the lenses from scratches. In this embodiment, the front end protection sheet 41 is a sapphire protection sheet, and the hardness of the sapphire material is high, so that scratching can be prevented, and lens atomization caused by temperature change when instruments enter a human body can be avoided. The first lens 42, the flat mirror 43, the second lens 44, the third lens 45, the fourth lens 46 and the rod lens sets 47 are sequentially arranged in the inner tube 21, the front end of the first lens 42 is connected with the inner side of the front end protection plate 41, the first lens 42, the flat mirror 43 and the second lens 44 are sequentially connected, and the third lens 45 and the fourth lens 46 are connected. The first lens 42, the second lens 44, the third lens 45 and the fourth lens 46 are penta-cemented prisms, and the focus point is located in front, so that the transmission is clearer and closer to the actual state. A first spring coil 51 is arranged between the second lens 44 and the third lens 45, and a second spring coil 52 is arranged between the fourth lens 46 and the nearest rod lens group 47. The rod lens group 47 includes a first rod lens 471 and a second rod lens 472 connected, and any adjacent rod lens groups 47 are symmetrically arranged. When the first rod lenses 471 of two adjacent rod lens groups 47 are adjacent, a fourth spring ring 54 is arranged between the two first rod lenses 471; when the second rod lenses 472 of two adjacent rod lens groups 47 are adjacent, a third coil 53 is disposed between the two second rod lenses 472. In the embodiment, the spring ring is used for connecting the adjacent lenses, so that the objective lens in the inner cylinder is not easy to deform, the imaging distortion is small, and the visual effect is good. The rod lens group 47 is conducted by matching the two rod lenses, so that the imaging of the rod lens group 47 cannot be conducted bilaterally, the loss rate and the distortion rate of image multi-transmission are reduced, and the production cost is saved. In addition, the outer side of the first lens 42 is sleeved with an object pad 421 which abuts against the inner side of the inner tube 21, and the object pad is used for ensuring the imaging effect of the first lens 42.

The rearmost set of rod lenses 47 in the inner tube 21 passes through the channel 12 with one end thereof located within the channel 12. One end of the rod lens group 47 in the lens channel 12 is sleeved with a pressing lens barrel 61, an adjusting spring 62 is arranged between the pressing lens barrel 61 and the eyepiece barrel 33, the arranged adjusting spring 62 is pressed between the pressing lens barrel 61 and the eyepiece barrel 33, and two ends of the adjusting spring 62 are respectively connected with the pressing lens barrel 61 and the eyepiece barrel 33, so that the objective system part in the inner barrel is relatively fixed. The first ocular 48 and the second ocular 49 are arranged in the ocular groove 63 from inside to outside, the light barrier 64 is arranged in the ocular barrel 33, the front end of the first ocular 48 is connected with the light barrier 64, the T-shaped protection sheet 40 is arranged in the viewing groove 38, and the T-shaped protection sheet 40 is fixed in the viewing groove 38 to seal the space between the outer tube 2, the inner tube 21, the tee pipe fitting 1, the ocular sleeve 31 and the ocular barrel 33 which are positioned between the front end protection sheet 41 and the T-shaped protection sheet 40, so that external impurities are prevented from entering.

As shown in fig. 1 and 3, a first light guide joint 71 clamped with the tee 1 is arranged at the lower part of the tee 1, a second light guide joint 72 screwed at one end of the first light guide joint 71, a third light guide joint 73 screwed outside the second light guide joint 72, and a light guide sleeve 74 sleeved outside the third light guide joint 73 are arranged at the lower part of the tee 1, a light guide nozzle 75 is arranged in the first light guide joint 71, a light cone 76 is arranged in the second light guide joint 72, a light guide interface 741 and a connecting screw 742 arranged outside the light guide interface 741 are arranged on the light guide sleeve 74, and the axes of the light guide nozzle 75, the light cone 76 and the light guide interface 741 are overlapped. The light cone 76 is designed as a multifilament light cone 76, the optical fiber has good light guiding rate and uniformity, and images cannot be scattered or overlapped in the transmission process. The light guide interface 741 is provided as a connection port for connecting an external device and also as a transmission port for optical fiber images. In this embodiment, a gasket 70 sleeved outside the first light guide joint 71 is disposed between the first light guide joint 71 and the second light guide joint 72, the outer side of the gasket 70 abuts against the inner side of the three-way pipe fitting 1, and the gasket 70 is used for blocking the gap between the three-way pipe fitting and the first light guide joint 71 and the second light guide joint 72, so that the inside of the endoscope forms a relative seal.

The bronchoscope has compact integral structure and reasonable design, can accommodate more longer rod lenses, and improves the length of an objective lens, thereby avoiding the damage of the soft lens caused by the contact of the hard lens and the soft lens which possibly occur, and leading the operation of the hard lens and the soft lens to be more convenient. The spring ring is used for connecting the adjacent lenses, so that the objective structure in the inner cylinder is easier to align, the whole length is not easy to deform, the imaging distortion is small, and the visual effect is good. Each rod mirror group 47 is conducted by matching the two rod mirrors, so that the imaging of the rod mirror group 47 cannot be conducted bilaterally, the loss rate and the distortion rate of image multi-transmission are reduced, and the production cost is saved.

The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a bronchial endoscope, includes tee bend pipe fitting, connects the mirror outer tube at tee bend pipe fitting front end and sets up the eyepiece shell at eyepiece sleeve tail end at the eyepiece sleeve of tee bend pipe fitting tail end, threaded connection, opens on the eyepiece shell and has the visual groove, its characterized in that at the mirror outer tube of tee bend pipe fitting front end: a connecting seat is arranged in the three-way pipe fitting, and a mirror channel, a movable groove and a seat groove which are connected in sequence are arranged in the connecting seat; an eyepiece barrel with the front end positioned in the seat groove and the tail end clamped with the eyepiece sleeve is arranged in the eyepiece sleeve, and a diaphragm and an eyepiece groove which are connected are arranged in the eyepiece barrel;

the lower part of the three-way pipe is provided with a first light guide joint clamped with the three-way pipe, a second light guide joint in threaded connection with one end of the first light guide joint, a third light guide joint in threaded connection outside the second light guide joint and a light guide joint sleeve sleeved outside the third light guide joint, a light guide nozzle is arranged in the first light guide joint, a light cone is arranged in the second light guide joint, a light guide interface and a connecting thread arranged outside the light guide interface are arranged on the light guide joint sleeve, and the axes of the light guide nozzle, the light cone and the light guide interface are coincided;

the lens system comprises a front-end protection plate, a first lens, a flat lens, a second lens, a third lens, a fourth lens, a plurality of rod lens groups, a first ocular lens, a second ocular lens and a T-shaped protection plate, wherein the axes of the front-end protection plate are overlapped; the rod lens group at the tail end penetrates through the lens channel, one end of the rod lens group is positioned in the lens channel, the end of the rod lens group is sleeved with a lens pressing barrel, an adjusting spring is arranged between the lens pressing barrel and the eyepiece barrel, and two ends of the adjusting spring are respectively abutted against the lens pressing barrel and the eyepiece barrel; the first ocular and the second ocular are arranged in the ocular groove from inside to outside, the front end of the first ocular is connected with the diaphragm, and the T-shaped protection sheet is arranged in the viewing groove; the eyepiece sleeve is sleeved with an eyepiece seat, the eyepiece seat is sleeved with a fixed cylinder, and the fixed cylinder enables the eyepiece sleeve to form a limit position relative to the eyepiece sleeve through a fixed screw; a gasket sleeved outside the first light guide joint is arranged between the first light guide joint and the second light guide joint, and the outer side of the gasket is abutted against the inner side of the three-way pipe fitting;

the rod mirror group comprises a first rod mirror and a second rod mirror which are connected in a matched mode, any adjacent rod mirror groups are symmetrically arranged, a fourth spring ring is arranged between every two adjacent first rod mirrors, and a third spring ring is arranged between every two adjacent second rod mirrors.

2. A bronchoscope according to claim 1, characterized in that: the front end protection sheet is a sapphire protection sheet.

3. A bronchoscope according to claim 1, characterized in that: the first lens, the second lens, the third lens and the fourth lens are all penta-cemented prisms.

4. A bronchoscope according to claim 1, characterized in that: the outer side of the first lens is sleeved with an object pad which is propped against the inner side of the inner tube.

5. A bronchoscope according to claim 1, characterized in that: the number of the rod lens groups is 9.

6. A bronchoscope according to any one of claims 1-5, characterized in that: one end of the eyepiece sleeve is provided with an arc groove.