CN219070203U

CN219070203U - Endoscope with a lens

Info

Publication number: CN219070203U
Application number: CN202222979780.1U
Authority: CN
Inventors: 陈东; 王伟; 孙文龙
Original assignee: Xinguangwei Medical Technology Suzhou Co ltd
Current assignee: Xinguangwei Medical Technology Suzhou Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-05-26
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses an endoscope, which comprises a main body, a cable and an insertion part, wherein the cable comprises an insertion section and a connection section connected with the insertion section, the connection section is arranged on the main body, the insertion part comprises a bending sleeve, the insertion section is penetrated in the bending sleeve, one end of the bending sleeve and the periphery of the insertion section are arranged in a sealing way through a first sealing body, and the other end of the bending sleeve and one end of the main body, which is close to the bending sleeve, are arranged in a sealing way through a second sealing body, so that the technical problem that the endoscope is easy to break when repeatedly bent in a bending complex environment in the prior art is solved.

Description

Endoscope with a lens

Technical Field

The utility model belongs to the technical field of endoscopes, and particularly relates to an endoscope.

Background

The endoscope is exemplified by an ultra-fine oral endoscope, which is used for an apparatus for observing and imaging in an oral cavity, and is increasingly applied to a dental root canal and a periodontal pocket, and can work in a narrow space with extremely fine and complicated bending.

However, the cable (for example, an optical fiber cable) of the ultra-fine oral endoscope in the prior art penetrates through the whole handheld portion, and the optical fiber tube needs to slide, so that a gap is reserved between the optical fiber tube and the interior of the handheld portion, when the optical fiber tube is bent, the whole optical fiber tube can be bent along with the bending, and the risk of breakage of the optical fiber tube in a complex bending environment is increased along with the increase of the bending expansion times.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problem that the endoscope is easy to break after repeated bending under a complex bending environment in the prior art.

In order to solve the above technical problems, the present utility model provides an endoscope including:

a main body;

the cable comprises an insertion section and a connecting section connected with the insertion section, and the connecting section is arranged on the main body; the method comprises the steps of,

the insertion part comprises a bending sleeve, the insertion section is arranged in the bending sleeve in a penetrating mode, one end of the bending sleeve and the periphery of the insertion section are arranged in a sealing mode through a first flexible sealing body, and the other end of the bending sleeve and one end, close to the bending sleeve, of the main body are arranged in a sealing mode through a second sealing body.

Preferably, in the endoscope, the main body includes a holding part provided in a cylindrical body, and a front cover provided at one end of the holding part, and the front cover and the holding part form a first accommodating cavity;

the connecting section is accommodated in the first accommodating cavity, and the other end of the bent sleeve and the inner wall of the front cover are arranged in a sealing manner through the second sealing body.

Preferably, in the endoscope, the second sealing body is a first sealing ring.

Preferably, in the endoscope, the front cover and the hand-held portion are sealed by a third sealing member.

Preferably, in the endoscope, the main body further includes a rear cover covering the other end of the holding portion, the front cover, the holding portion, and the rear cover form the first accommodating cavity, the holding portion and the rear cover are connected by a sealing screw, and the holding portion, the rear cover, and the sealing screw are sealed by a fourth sealing body.

Preferably, in the endoscope, an inner sealing sleeve is arranged in the sealing screw, and a first through hole is formed in the inner sealing sleeve in a penetrating way;

the cable also comprises a signal wire, wherein the signal wire penetrates through the first through hole and is in sealing arrangement with the inner wall of the first through hole, which is close to the rear cover.

In the endoscope, preferably, an inner diameter of the first through hole, an outer diameter of the inner seal sleeve, and an inner diameter of the seal screw are each set to be smaller from the hand-held portion to the rear cover.

Preferably, in the endoscope, the first sealing body includes a first section and a second section, the first section is disposed between one end of the curved sleeve and the periphery of the insertion section, the second section extends out of the curved sleeve, the first section includes a tapered section, the outer diameter of the tapered section is tapered along a direction approaching to the second section, and a stop surface facing the curved sleeve is disposed at a connection part of the second section and the first section;

the other end of the curved sleeve is stopped against the stop surface.

Preferably, in the endoscope, the first section further includes a widening section connected to the tapering section, the widening section is disposed on a side of the tapering section away from the second section, and an outer diameter of the widening section is disposed in a widening manner along a direction approaching the second section.

Preferably, in the endoscope, the endoscope further comprises an image processing device, the image processing device comprises an upper cover and a lower cover, the upper cover and the lower cover are pressed together, and a fifth sealing body is arranged at the joint of the upper cover and the lower cover.

The utility model has the following beneficial effects:

the cable takes the optical fiber as an example, the first sealing body seals the space between the bending sleeve and the periphery of the insertion section, so that liquid can be prevented from entering, and the second sealing body seals the space between the other end of the bending sleeve and one end of the main body, which is close to the bending sleeve, so that when the bending sleeve of the endoscope is bent, the bending fulcrum is arranged at the other end of the bending sleeve instead of penetrating the whole optical fiber tube, and the risk of breakage of the optical fiber tube in a complex bending environment can be effectively reduced;

further, when the optical fiber tube is used, the front section of the optical fiber tube needs to be bent, the pivot of the front section of the optical fiber tube is arranged on the first sealing body, the first sealing body is of a flexible structure and can move in the same direction along with the bending direction, and therefore the pressure of the optical fiber tube at the pivot can be dispersed;

further, the first sealing body is used for sealing the bending sleeve and the cable, the second sealing body is used for sealing the main body and the bending sleeve, a gap between the cable and the main body can be avoided, and the cable can be directly cleaned without being disassembled for cleaning during cleaning;

further, when the insertion portion is bent, the insertion section of the optical fiber tube is sealed by the first sealing body without being in contact with the end face of the hard bending sleeve, and meanwhile, a larger space is provided by the extension deformation of the rear section of the insertion section, so that stress concentration during deformation is reduced, and the fracture risk of the optical fiber tube is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of one embodiment of an endoscope of the present utility model;

FIG. 2 is a cross-sectional view of a portion of the structure of FIG. 1;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

FIG. 4 is an enlarged schematic view at B in FIG. 2;

FIG. 5 is an enlarged schematic view of FIG. 2 at C;

fig. 6 is a cross-sectional view of a portion of the structure of fig. 1.

The utility model is described by reference numerals:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

The utility model provides an endoscope, referring to fig. 1 and 2, the endoscope 100 comprises a main body 1, a cable 2 and an insertion part 3, wherein the cable 2 comprises an insertion section 21 and a connection section 22 connected with the insertion section 21, the connection section 22 is arranged on the main body 1, the insertion part 3 comprises a bending sleeve 31, the insertion section 21 penetrates through the bending sleeve 31, one end of the bending sleeve 31 and the periphery of the insertion section 21 are sealed and arranged through a flexible first sealing body 41, and the other end of the bending sleeve 31 and one end of the main body 1 close to the bending sleeve 31 are sealed and arranged through a second sealing body 42.

It should be noted that, the insertion section 21 and the connection section 22 may be formed as a single body (for example, may be a single body of a multi-layer light guiding optical fiber bundle), or may be formed in a segmented manner, and the specific arrangement forms of the insertion section 21 and the connection section 22 are not limited thereto.

The cable 2 takes an optical cable as an example, the optical cable comprises an optical fiber tube and an optical fiber arranged in the optical fiber tube, the first sealing body 41 seals between the bending sleeve 31 and the periphery of the insertion section 21, so that liquid can be prevented from entering, and the second sealing body 42 seals between the other end of the bending sleeve 31 and one end of the main body 1, which is close to the bending sleeve 31, so that when the bending sleeve 31 of the endoscope 100 is bent, a bending fulcrum is arranged at the other end of the bending sleeve 31 instead of penetrating through the whole optical fiber tube, and the risk of breakage of the optical fiber tube in a complex bending environment can be effectively reduced.

Further, when the insertion portion 3 is bent, the insertion section 21 of the optical fiber tube is sealed by the first sealing body 41 without being in contact with the end face of the hard bending ferrule 31, and simultaneously, the extension deformation of the rear section portion of the rear insertion section 21 provides a larger space, reduces stress concentration during deformation, and reduces the risk of breakage of the optical fiber tube.

Referring to fig. 3, the first sealing body 41 is a flexible sealing body (in this embodiment, the first sealing body 41 may be made of plastic material), the middle portion of the first sealing body 41 is disposed in a retracted manner, and after the first sealing body 41 is installed between the curved sleeve 31 and the insertion section 21, the curved sleeve 31 is accommodated in the retracted portion of the first sealing body 41 and is not easy to be removed. Specifically, the first sealing body 41 includes a first section 411 and a second section 412, the first section 411 is disposed between one end of the curved sleeve 31 and the periphery of the insertion section 21, the second section 412 extends out of the curved sleeve 31, the first section 411 includes a tapered section, the outer diameter of the tapered section is tapered along the direction approaching to the second section 412, and a stop surface 4121 facing the curved sleeve 31 is disposed at the connection between the second section 412 and the first section 411; the other end of the curved sleeve 31 is stopped against the stopper surface 4121, so that the first sealing body 41 is effectively prevented from coming out. When the optical fiber tube is used, the front section of the optical fiber tube needs to be bent, the pivot of the front section of the optical fiber tube is arranged on the first sealing body 41, the first sealing body 41 is of a flexible structure and can move in the same direction along with the bending direction, and therefore the pressure of the optical fiber tube at the pivot can be dispersed.

The first section 411 further includes a widening section 4111 connected to the tapering section, where the widening section 4111 is disposed on a side of the tapering section away from the second section 412, and an outer diameter of the widening section 4111 is gradually widened along a direction close to the second section 412, so that the first sealing body 41 can be effectively prevented from completely sliding into the curved sleeve 31 or falling out.

The bending sleeve 31 is further sleeved with a protection sleeve (not shown in the figure) at one end far away from the main body 1, the protection sleeve is provided with a connecting end, the bending sleeve 31 penetrates into the protection sleeve from the connecting end, and the end part of the connecting end is internally chamfered, so that the bending sleeve 31 can be inserted more conveniently and rapidly when being penetrated in. The protective sleeve can further reduce the risk of breakage of the cable 2, improving the service life of the instrument. The protective sleeve may be transparent or non-transparent. When the protective sleeve is a transparent sleeve, the process of sleeving the cable 2 (the cable 2 is an optical fiber cable in the embodiment) can be observed conveniently, and the use is convenient.

Specifically, referring to fig. 4, the main body 1 includes a holding portion 12 disposed in a cylindrical shape, and a front cover 11 disposed on one end of the holding portion 12, where the front cover 11 and the holding portion 12 form a first cavity 131; the connecting section 22 is accommodated in the first accommodating cavity 131, and the other end of the bent sleeve 31 and the inner wall of the front cover 11 are hermetically arranged through the second sealing body 42.

In addition, the periphery of the hand-holding part 12 is also provided with an anti-slip structure 121, which is convenient for hand holding and anti-slip. The anti-slip structure 121 may be a concave-convex structure, a plurality of protruding structures arranged at intervals, or a plurality of concave structures arranged at intervals, which is not particularly limited herein.

The front cover 11 is provided with a fourth through hole 111, the curved sleeve 31 penetrating through the insertion section 21 is disposed through the fourth through hole 111, the front cover 11 is further provided with a first step surface 112 facing away from the curved sleeve 31, the first step surface 112 is disposed around the curved sleeve 31, and the second sealing body 42 abuts against the first step surface 112. In this embodiment, the second sealing body 42 is a first sealing ring, and the first sealing ring is internally penetrated with the curved sleeve 31 and is abutted against the first step surface 112.

The front cover 11 and the hand-held part 12 are sealed by a third sealing body 43. Specifically, the front cover 11 is provided with an inner neck at a connection portion with the hand-held portion 12, and has a second step surface 113 facing the hand-held portion 12, an end portion of the hand-held portion 12 near the front cover 11 is fitted over the inner neck, and the third seal 43 is provided between the inner neck and the end portion of the hand-held portion 12 near the front cover 11 and abuts against the second step surface 113. In this embodiment, the end of the hand-held portion 12 near the front cover 11 is screwed to the periphery of the inner necked-down hole. The third sealing body 43 is a second sealing ring, and the second sealing ring is sleeved on the inner shrinkage opening and is abutted against the second step surface 113, so that the sealing between the hand-held part 12 and the front cover 11 is realized.

Further, referring to fig. 5, the main body 1 further includes a rear cover 13 covering the other end of the hand-holding portion 12, the front cover 11, the hand-holding portion 12, and the rear cover 13 form a first cavity 131, the hand-holding portion 12 and the rear cover 13 are connected by a sealing screw 14, and the hand-holding portion 12, the rear cover 13, and the sealing screw 14 are hermetically disposed by a fourth sealing body 44. In this embodiment, the fourth sealing body 44 is a third sealing ring, the periphery of the sealing screw 14 is provided with a groove 141, and the fourth sealing body 44 seals the hand-holding part 12, the rear cover 13 and the sealing screw 14, so that the joint can be wrapped, the steps are reduced, and cleaning and disinfection are facilitated.

The cable also comprises a signal wire 23, an inner sealing sleeve 15 is arranged in the sealing screw 14, and a first through hole 151 is formed in the inner sealing sleeve 15 in a penetrating way; the signal line 23 passes through the first through hole 151 and is hermetically disposed on the inner wall close to the first through hole 151.

The inner and outer surfaces of the inner seal sleeve 15 and the seal screw 14 have tapers, specifically, the inner diameter of the first through hole 151, the outer diameter of the inner seal sleeve 15, and the inner diameter of the seal screw 14 are gradually reduced from the hand-held portion 12 to the rear cover 13. The signal wire 23 of the cable 2 passes through the first through hole 151 of the inner sealing sleeve 15, when the sealing screw 14 is screwed, the inner sealing sleeve 15 is pressed tightly, the small inner diameter end of the sealing screw 14 locks the outer conical surface of the inner sealing sleeve 15, and the small inner diameter end of the inner sealing sleeve 15 seals the signal wire 23.

Friction between flexible bodies during assembly can be effectively reduced by tapering the inner wall of the first through hole 151, and the periphery of the inner sealing sleeve 15 is tapered to facilitate the withdrawal of the sealing screw 14 without resistance during disassembly.

More specifically, the sealing screw 14 is provided with a second through hole 142, the inner sealing sleeve 15 is penetrated through the second through hole 142, and at least part of the inner wall of the second through hole 142 is tapered, wherein the tapered part of the inner wall of the second through hole 142 is gradually reduced from the hand-holding part 12 to the rear cover 13. The inner wall of the second through hole 142 is at least partially tapered, so that the sealing performance can be ensured, the inner sealing sleeve 15 can not be driven to rotate during screwing and assembling, and the assembling difficulty is reduced.

The rear cover 13 is provided with a third through hole 132, and the cable 2 passes through the second through hole 142 and then passes through and protrudes out of the third through hole 132.

In addition, referring to fig. 6, the endoscope 100 further includes an image processing device 5, the image processing device 5 includes an upper cover 51 and a lower cover 52, the upper cover 51 and the lower cover 52 are pressed together, and specifically, the upper cover 51 and the lower cover 52 are snapped together by a snap and are shaped to form an installation cavity. A fifth sealing body 45 is provided at the junction of the upper cover 51 and the lower cover 52. In the present embodiment, the fifth sealing body 45 is a flexible gasket. Specifically, the press-fit portions of the upper cover 51 and the lower cover 52 each have a press-fit surface, and the flexible gasket is provided between the press-fit surfaces of the upper cover 51 and the lower cover 52.

One end of the upper cover 51 and the lower cover 52 is penetrated with a third through hole 132, and the signal wire 23 of the cable 2 extends out of the third through hole 132 of the rear cover 13, passes through the fifth through hole 53, and is fixed in the mounting cavity.

Specifically, the signal wire 23 of the cable 2 is sleeved with a release preventing tape (not shown) at one end of the cable 2 extending from the rear cover 13 and passing through the fifth through hole 53, and the release preventing tape is fastened, so that the movement of the release preventing tape can be limited when the upper cover 51 and the lower cover 52 are covered to limit the movement of the cable 2.

The image processing apparatus 5 further includes a flexible sealing sleeve 54 sleeved on the other ends of the upper cover 51 and the lower cover 52, and the flexible sealing sleeve 54 is respectively attached to and sealed with the upper cover 51 and the lower cover 52, so that tightness at the other ends of the upper cover 51 and the lower cover 52 can be ensured.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.

Claims

1. An endoscope, comprising:

a main body;

2. The endoscope of claim 1, wherein the main body comprises a holding part arranged in a cylinder, and a front cover arranged at one end of the holding part in a covering manner, and the front cover and the holding part form a first containing cavity;

3. The endoscope of claim 2, wherein the second sealing body is a first sealing ring.

4. The endoscope of claim 2, wherein the front cover and the handpiece are sealingly arranged by a third sealing body.

5. The endoscope of claim 2, wherein the main body further comprises a rear cover covered at the other end of the hand-held part, the front cover, the hand-held part and the rear cover form the first accommodating cavity, the hand-held part and the rear cover are connected through a sealing screw, and the hand-held part, the rear cover and the sealing screw are hermetically arranged through a fourth sealing body.

6. The endoscope of claim 5, wherein an inner sealing sleeve is arranged in the sealing screw, and a first through hole is formed in the inner sealing sleeve in a penetrating manner;

7. The endoscope of claim 6, wherein an inner diameter of the first through hole, an outer diameter of the inner sealing sleeve, and an inner diameter of the sealing screw are each tapered in a direction from the handle portion to the rear cover.

8. The endoscope of claim 1, wherein the first sealing body comprises a first section and a second section, the first section is arranged between one end of the bending sleeve and the periphery of the insertion section, the second section extends out of the bending sleeve, the first section comprises a tapered section, the outer diameter of the tapered section is tapered along the direction approaching the second section, and a stop surface facing the bending sleeve is arranged at the joint of the second section and the first section;

the other end of the curved sleeve is stopped against the stop surface.

9. The endoscope of claim 8, wherein the first section further comprises a widening section connected to the tapering section, the widening section being provided at a side of the tapering section remote from the second section, an outer diameter of the widening section being provided in a widening manner in a direction approaching the second section.

10. The endoscope of claim 1, further comprising an image processing device comprising an upper cover and a lower cover, wherein the upper cover and the lower cover are pressed together, and wherein a fifth sealing body is provided at a junction of the upper cover and the lower cover.