An electronic endoscope system

Abstract

The present invention discloses an electronic endoscope system, which includes a light guide portion, a cold light source, and a control device capable of starting and stopping the cold light source. A cold light source housing is provided on the cold light source, and a start-stop switch and a telescopic movable column are provided in the cold light source housing. The start-stop switch is electrically connected to the control device; a telescopic movable block is provided on the light guide portion; when the light guide portion is inserted into the cold light source, the movable block can push the movable column to trigger the start-stop switch to send a signal to the control device to start the cold light source; when the light guide portion is pulled out of the cold light source, the movable column resets, and the start-stop switch sends a signal to the control device to stop the cold light source. The electronic endoscope system of the present invention realizes the correspondence between the insertion and extraction actions of the light guide portion, that is, after the light guide portion is inserted into the cold light source, the start-stop switch is triggered and the system works normally; before the light guide portion is pulled out of the cold light source, the start-stop switch issues a command to make the system execute the power-off state.

Description

Technical Field

[0001] The present invention relates to an endoscope system, and in particular to an electronic endoscope system. Background Art

[0002] An electronic endoscope is a device with a slender flexible insertion part and a camera device at its front end that can be inserted into a body cavity to obtain images of the scene inside the cavity. It is connected to an endoscope host device, which provides the endoscope with a source of lighting and air pressure, as well as the transmission of electrical signals between the host and the endoscope. Therefore, every time the endoscope system is used, the light guide of the endoscope needs to be frequently plugged in and out of the host device, which places high demands on the convenience of the entire plug-in operation and the reliability of the connection.

[0003] like Figure 1 As shown, the electronic endoscope system mainly includes: endoscope I, cold light source II, water gas bottle III, image processor host IV, image display V. Among them, endoscope I is composed of light guide part 1, light guide tube 2, operation part 3, insertion hose 4, bending part 5, and head end 6.

[0004] In the prior art, the connection between the light guide and the cold light source is clamped by a circular metal ring with a certain elasticity, such as Figure 2 As shown, Ⅱ-1' is the inner shell of the cold light source, Ⅱ-2' is the elastic ring, 1' is the light guide shell, during the insertion of the light guide into the cold light source, the elastic ring undergoes elastic deformation under the action of the inner shell of the cold light source, and after the insertion and assembly is completed, the elastic ring continues to maintain a certain deformation state and is clamped in the corresponding annular groove of the inner shell of the cold light source. When pulling it out, a certain force needs to be applied to deform the elastic ring and detach it from the inner shell of the cold light source, and the light guide is pulled out of the cold light source. In this scheme, both the insertion and extraction actions require a certain force to make the elastic ring deform elastically before they can be completed, and there will be a slight shake when the light guide is pulled after connection; after long-term use, the elastic ring deformation recovery is affected, and the connection reliability will be affected.

[0005] In addition, after the light guide is inserted into or removed from the cold light source, it is necessary to manually control the cold light source to output or stop outputting light to the light guide, which is not conducive to energy saving. In addition, high-brightness light will be emitted from the insertion hole of the light guide. If the output light is not cut off before insertion or removal, it will cause the risk of eye injury to the operator.

[0006] Therefore, those skilled in the art are committed to developing an electronic endoscope system that corresponds to the plugging and unplugging action of the light guide. Summary of the invention

[0007] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide an electronic endoscope system corresponding to the plugging and unplugging action of the light guide part.

[0008] To achieve the above object, the present invention provides an electronic endoscope system, which includes a light guide part, a cold light source, and a control device that can start and stop the cold light source. A cold light source housing is provided on the cold light source, and a start-stop switch and a retractable movable column are provided in the cold light source housing. The start-stop switch is electrically connected to the control device; a retractable movable block is provided on the light guide part;

[0009] When the light guide part is inserted into the cold light source, the movable block can push the movable column to trigger the start-stop switch to send a signal to the control device to start the cold light source; when the light guide part is pulled out of the cold light source, the movable column resets, and the start-stop switch sends a signal to the control device to stop the cold light source.

[0010] Preferably, the start-stop switch is a photoelectric switch. When the light guide part is inserted into the cold light source, the movable column can block the induction transmission port of the photoelectric switch; when the light guide part is pulled out of the cold light source, the induction transmission port of the photoelectric switch is unblocked.

[0011] To realize the expansion and contraction of the movable block, a recessed light guide part housing is provided on the light guide part, and a cylindrical positioning groove is provided in the light guide part housing;

[0012] One end of the movable block is provided with a first limiting groove, and a positioning column is provided in the first limiting groove. The positioning column is slidably fitted in the positioning groove;

[0013] A return spring is provided between the outer side wall of the positioning groove and the inner side wall of the first limiting groove.

[0014] To limit the movable block to the light guide part housing, a stop block that can abut against the Z-direction side surface of the cold light source housing is provided on the light guide part housing;

[0015] A limiting plate is provided between the stop block and the movable block. A second limiting groove is provided at the other end of the movable block, and the limiting plate extends into the second limiting groove; the side wall of the second limiting groove can abut against the inner side surface of the cold light source housing.

[0016] To facilitate pressing the movable block, a third limiting groove is provided at the other end of the movable block, and a button is fixed in the third limiting groove.

[0017] To facilitate the insertion of the light guide part into the cold light source, a first guiding inclined surface is provided at the other end of the movable block, and a second guiding inclined surface that cooperates with the first guiding inclined surface is provided on the cold light source housing;

[0018] The inclination angle of the first guiding inclined surface is 30° - 75°.

[0019] To further facilitate the insertion of the light guide part into the cold light source, a first permanent magnet and a second permanent magnet are respectively provided at both ends of the light guide part in the X direction; a third permanent magnet and a fourth permanent magnet corresponding to the first permanent magnet and the second permanent magnet are provided on the cold light source.

[0020] To limit the permanent magnets, a first baffle that can abut against the Z-direction sides of the first permanent magnet and the second permanent magnet is provided on the light guide part;

[0021] A second baffle and a third baffle that can abut against the X-direction and Y-direction sides of the third permanent magnet and the fourth permanent magnet are provided on the cold light source.

[0022] To realize the telescoping of the movable column, a fixing frame is provided in the cold light source housing, and a through movable column mounting hole is provided on the fixing frame, and the movable column is slidably fitted in the movable column mounting hole.

[0023] To limit the movable column, the movable column is made of plastic material; the movable column is T-shaped, and the diameter of the horizontal side of the movable column is greater than the aperture of the movable column mounting hole; a limiting step that can abut against the movable column is provided on the cold light source housing.

[0024] The beneficial effects of the present invention are as follows: The electronic endoscope system of the present invention realizes the correspondence of the plugging and unplugging actions of the light guide part, that is, after the light guide part is inserted into the cold light source, the start-stop switch is triggered and the system works normally; before the light guide part is pulled out of the cold light source, the start-stop switch issues a command to make the system execute a power-off state. In addition, the present invention also realizes the fast and stable connection between the light guide part and the cold light source. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of an electronic endoscope system in the prior art.

[0026] Figure 2 is a schematic structural diagram of the connection structure between the light guide part and the cold light source in the prior art.

[0027] Figure 3 is a partial sectional view in the Y direction of the electronic endoscope system of the specific embodiment of the present invention.

[0028] Figure 4 is Figure 3 the enlarged view of the partial area A in

[0029] Figure 5 is a schematic structural diagram when the light guide part is inserted into the cold light source in the electronic endoscope system of the specific embodiment of the present invention.

[0030] Figure 6 is a schematic structural diagram after the light guide part is inserted into the cold light source in the electronic endoscope system of the specific embodiment of the present invention.

[0031] Figure 7 This is a schematic structural view when the light guide part is pulled out from the cold light source in the specific embodiment of the electronic endoscope system of the present invention.

[0032] Figure 8 This is a schematic structural view of the movable block in the specific embodiment of the electronic endoscope system of the present invention.

[0033] Figure 9 This is a partial sectional view in the X direction of the electronic endoscope system in the specific embodiment of the present invention. Specific Embodiment

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation of the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] As Figures 3 - 8 shown, an electronic endoscope system includes a light guide part 1, a cold light source II, and a control device that can start and stop the cold light source II; a cold light source housing II-1 is provided on the cold light source II; a start-stop switch II-3 and a telescopic movable column II-2 are provided in the cold light source housing II-1; the start-stop switch II-3 is electrically connected to the control device; a telescopic movable block 13 is provided on the light guide part 1.

[0036] When the light guide part 1 is inserted into the cold light source II, the movable block 13 can push the movable column II-2 to trigger the start-stop switch II-3 to send a signal to the control device to start the cold light source II; when the light guide part 1 is pulled out from the cold light source II, the movable column II-2 resets, and the start-stop switch II-3 sends a signal to the control device to stop the cold light source II.

[0037] In this embodiment, the start-stop switch II-3 is a photoelectric switch; when the light guide part 1 is inserted into the cold light source II, the movable column II-2 can block the induction transmission port s of the photoelectric switch; when the light guide part 1 is pulled out from the cold light source II, the induction transmission port s of the photoelectric switch is unblocked.

[0038] A sunken light guide part housing 14 is provided on the light guide part 1; a cylindrical positioning groove 14-1 is provided in the light guide part housing 14; in this embodiment, the positioning groove 14-1 is erected on the bottom wall of the light guide part housing 14.

[0039] A first limiting groove 13-1 is provided at one end of the movable block 13; a positioning column 13-2 is provided in the first limiting groove 13-1; the positioning column 13-2 is slidably fitted in the positioning groove 14-1.

[0040] A return spring 15 is provided between the outer side wall of the positioning groove 14-1 and the inner side wall of the first limiting groove 13-1. In this embodiment, the positioning groove 14-1 has an inner cylindrical surface; the positioning post 13-2 has an outer cylindrical surface; the return spring 15 is designed between the movable block 13 and the light guide housing 14; and the inner and outer cylindrical surfaces of the positioning groove 14-1 and the positioning post 13-2 respectively limit the return spring 15; preventing the spring from being displaced during button operation.

[0041] The light guide housing 14 is provided with a stop block 11 that can abut against the Z-direction side surface of the cold light source housing II-1; for limiting the light guide housing 14 in the Z direction (i.e., the front-back direction when the light guide is inserted into the cold light source). In this embodiment, the stop block 11 is in the shape of "┘", and the vertical side of the stop block 11 can abut against the right side surface of the cold light source housing II-1.

[0042] A limiting plate 16 is provided between the stop block 11 and the movable block 13; the other end of the movable block 13 is provided with a second limiting groove 13-3; the limiting plate 16 extends into the second limiting groove 13-3. For limiting the movable block 13 in the Y direction (i.e., the up-down direction when the light guide is inserted into the cold light source); specifically, forming an upward limit for the movable block 13, so that the movable block is limited to the light guide housing 14.

[0043] The side wall of the second limiting groove 13-3 can abut against the inner side surface of the cold light source housing II-1, for limiting the movable block 12 in the Z direction when the light guide is inserted into the cold light source, realizing the quick connection between the light guide and the cold light source.

[0044] The other end of the movable block 13 is provided with a third limiting groove 13-4; a button 12 is fixed in the third limiting groove 13-4. The button 12 and the movable block 13 are linked, which is beneficial to conveniently pressing the movable block.

[0045] The other end of the movable block 13 is provided with a first guiding inclined surface b; the cold light source housing II-1 is provided with a second guiding inclined surface a that cooperates with the first guiding inclined surface b;

[0046] The inclination angle of the first guiding inclined surface b is 30°-75°. The angle value of the matching guiding inclined surface can be adjusted according to the magnitude of the compression force of the return spring 15.

[0047] At both ends of the light guide part 1 in the X direction (i.e., the left - right direction when the light guide part is inserted into the cold light source), a first permanent magnet 17 and a second permanent magnet 18 are respectively provided; on the cold light source II, a third permanent magnet II - 5 and a fourth permanent magnet II - 6 corresponding to the first permanent magnet 17 and the second permanent magnet 18 are provided. Using the principle that opposite - polarity permanent magnets attract each other, when the light guide part 1 is gradually approaching and inserted into the cold light source II, the permanent magnets on the light guide part 1 and the permanent magnets on the cold light source II generate an attractive force, adsorbing the light guide part 1 on the cold light source II. The first permanent magnet 17 and the second permanent magnet 18 can be used with multiple permanent magnets overlapping; the third permanent magnet II - 5 and the fourth permanent magnet II - 6 on the cold light source II can also be used with multiple permanent magnets overlapping to ensure an appropriate attractive force.

[0048] On the light guide part 1, a first baffle 19 is provided which can abut against the Z - direction side surfaces of the first permanent magnet 17 and the second permanent magnet 18; it is used for Z - direction limiting of the first permanent magnet 17 and the second permanent magnet 18.

[0049] On the cold light source II, a second baffle II - 1 and a third baffle II - 7 are provided which can abut against the X - direction and Y - direction side surfaces of the third permanent magnet II - 5 and the fourth permanent magnet II - 6. They are used for X - direction and Y - direction limiting of the third permanent magnet II - 5 and the fourth permanent magnet II - 6.

[0050] In the cold light source housing II - 1, a fixing frame II - 4 is provided; on the fixing frame II - 4, a through - hole for installing the movable column is provided; the movable column II - 2 is slidably fitted in the through - hole for installing the movable column. In this embodiment, the start - stop switch II - 3 is also installed on the fixing frame II - 4.

[0051] The movable column II - 2 is made of plastic material; the movable column II - 2 is light in weight and has small friction; so that the movable block 13 on the light guide part 1 can smoothly lift it up.

[0052] The movable column II - 2 is in a T - shape; the diameter of the horizontal side of the movable column II - 2 is larger than the aperture of the through - hole for installing the movable column; on the cold light source housing II - 1, a limiting step v which can abut against the movable column II - 2 is provided. It is used for Y - direction limiting of the movable column II - 2; to prevent the movable column II - 2 from falling off the fixing frame II - 4 after being lifted by the movable block 13.

[0053] When the above - mentioned electronic endoscope system is installed; such as Figure 4 、 Figure 5As shown; the light guide part 1 is gradually brought close to the cold light source II; the first guiding bevel b of the movable block 13 on the light guide part 1 contacts the second guiding bevel a of the cold light source housing II-1 on the cold light source II; under the attraction of the above-mentioned permanent magnet; the second guiding bevel a applies pressure to the first guiding bevel b so that the movable block 13 compresses the reset spring 15 and moves downward; at the same time, the light guide part 1 continues to move close to the cold light source II under the attraction of the permanent magnet; when the light guide part 1 moves to be completely in contact with the cold light source II, the movable block 13 is no longer restricted by the cold light source housing II-1; the movable block 13 is restored to its initial state by the upward force of the reset spring 15.

[0054] like Figure 6 As shown, at this time, in addition to being attracted and fixed to the cold light source II by the above-mentioned permanent magnet, the light guide part 1 is also clamped in the cold light source housing II-1 by the movable block 13; when the light guide part 1 moves to fully fit with the cold light source II, the movable block 13 returns to its initial state and pushes up the movable column II-2; the movable column II-2 blocks the inductive transmission port s on the photoelectric switch II-3; the photoelectric switch sends a signal to the system control device; the system control device then detects that the light guide part or the endoscope I has been inserted, starts power supply and signal transmission; the light guide part 1 and the cold light source II are doubly fixed by the permanent magnet and the movable block 13; the light guide part 1 will not fall off the cold light source II due to external force, and the connection is reliable.

[0055] like Figure 7 As shown, when the light guide part is ready to be pulled out, press the button 12, and the button 12 drives the movable block 13 to compress the reset spring 15 and move downward. When the movable block 13 moves downward, the movable column Ⅱ-2 on the cold light source Ⅱ also moves downward synchronously due to its gravity. When the movable block 13 moves downward to be about to be separated from the cold light source housing Ⅱ-1, the movable column Ⅱ-2 no longer blocks the sensing transmission port s of the photoelectric switch. At this time, the control device of the system receives the command that the light guide part 1 is ready to be pulled out and cuts off the power supply and signal transmission of the system. When the movable block 13 continues to move downward to be completely separated from the cold light source housing Ⅱ-1, the light guide part 1 can be directly pulled out from the cold light source Ⅱ.

[0056] The system of the present invention can automatically detect when the light guide part 1 is inserted; when the light guide part 1 cannot be completely pulled out of the cold light source II, the power supply and signal transmission of the system can be cut off in advance; forced or accidental pullout can be effectively prevented from damaging the equipment; and the risk of eye injuries to the operator can be completely avoided by cutting off the high-brightness light before the light guide part is pulled out.

[0057] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art in this technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. An electronic endoscope system, comprising a light guide part (1), a cold light source (Ⅱ), and a control device capable of starting and stopping the cold light source (Ⅱ), characterized in that, The cold light source (II) is provided with a cold light source housing (II-1). The cold light source housing (II-1) is provided with a start-stop switch (II-3) and a telescopic movable column (II-2). The start-stop switch (II-3) is electrically connected to the control device; the light guide part (1) is provided with a telescopic movable block (13); The start-stop switch (II-3) is a photoelectric switch. When the light guide part (1) is inserted into the cold light source (II), the movable column (II-2) can block the induction transmission port (s) of the photoelectric switch; when the light guide part (1) is pulled out of the cold light source (II), the induction transmission port (s) of the photoelectric switch is unblocked; When the light guide part (1) is inserted into the cold light source (II), the movable block (13) can push the movable column (II-2) to trigger the start-stop switch (II-3) to send a signal to the control device to start the cold light source (II); when the light guide part (1) is pulled out of the cold light source (II), the movable column (II-2) resets, and the start-stop switch (II-3) sends a signal to the control device to stop the cold light source (II); The light guide part (1) is provided with a recessed light guide part housing (14). The light guide part housing (14) is provided with a cylindrical positioning groove (14-1); One end of the movable block (13) is provided with a first limiting groove (13-1). A positioning column (13-2) is arranged in the first limiting groove (13-1). The positioning column (13-2) is in sliding fit with the positioning groove (14-1); A return spring (15) is arranged between the outer side wall of the positioning groove (14-1) and the inner side wall of the first limiting groove (13-1); The light guide part housing (14) is provided with a stop block (11) that can abut against the Z-direction side surface of the cold light source housing (II-1). The stop block 11 is in the shape of "┘”; A limiting plate (16) is arranged between the stop block (11) and the movable block (13). The other end of the movable block (13) is provided with a second limiting groove (13-3). The limiting plate (16) extends into the second limiting groove (13-3); the side wall of the second limiting groove (13-3) can abut against the inner side surface of the cold light source housing (II-1).

2. The electronic endoscope system according to claim 1, characterized in that, The other end of the movable block (13) is provided with a third limiting groove (13-4). A button (12) is fixed in the third limiting groove (13-4).

3. The electronic endoscope system according to claim 1, characterized in that, The other end of the movable block (13) is provided with a first guiding inclined surface (b). The cold light source housing (II-1) is provided with a second guiding inclined surface (a) that cooperates with the first guiding inclined surface (b); The inclination angle of the first guiding inclined surface (b) is 30°-75°.

4. The electronic endoscope system according to claim 1, characterized in that, The two ends of the light guide part (1) in the X direction are respectively provided with a first permanent magnet (17) and a second permanent magnet (18); the cold light source (II) is provided with a third permanent magnet (II-5) and a fourth permanent magnet (II-6) corresponding to the first permanent magnet (17) and the second permanent magnet (18) respectively.

5. The electronic endoscope system according to claim 4, characterized in that, The light guide part (1) is provided with a first baffle (19) that can abut against the Z-direction side surfaces of the first permanent magnet (17) and the second permanent magnet (18); A second baffle (II-1) and a third baffle (II-7) that can abut against the X-direction and Y-direction sides of the third permanent magnet (II-5) and the fourth permanent magnet (II-6) are provided on the cold light source (II).

6. The electronic endoscope system according to claim 1, characterized in that, A fixing frame (II-4) is provided in the cold light source housing (II-1), and a through-hole for the movable column is provided on the fixing frame (II-4), and the movable column (II-2) is slidably fitted in the through-hole for the movable column.

7. The electronic endoscope system according to claim 6, characterized in that, The movable column (II-2) is made of plastic material; the movable column (II-2) is T-shaped, and the diameter of the horizontal side of the movable column (II-2) is larger than the diameter of the through-hole for the movable column; a limiting step (v) that can abut against the movable column (II-2) is provided on the cold light source housing (II-1).

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