Nasal endoscope with flushable lens

Abstract

A nasal endoscope with a flushable lens relates to the field of medical instruments and comprises an extension rod, an optical lens, a holding handle, imaging equipment, a flushing device and a liquid suction device. The optical lens is arranged at the end of the extension rod; the holding handle is coaxially connected with the extension rod; the imaging equipment extends into the extension rod from the holding handle and is connected with the optical lens for presenting an image; the flushing device comprises a spraying pipe and a spraying mechanism, and the spraying pipe is arranged in the extension rod and faces the mirror surface of the optical lens; the liquid suction device comprises a liquid suction pipe, a liquid suction head and a negative pressure mechanism. Water can be sprayed to the lens through the spraying pipe to wash dirt on the lens, observation is facilitated, the lens does not need to be repeatedly taken out to be wiped, the examination and operation efficiency is improved, a patient is often in a sitting and lying position during nasal endoscopy, and if water spraying cleaning is needed, the liquid suction hole is formed in the rear portion of the lens, so that cleaning is more convenient. And the liquid can be timely sucked away from the liquid suction hole when flowing out downwards along the extension rod.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical apparatus and instruments, and particularly relates to an endoscope with a washable lens. BACKGROUND

[0002] An endoscope is an otolaryngology device, which is an optical device capable of checking the nasal cavity in detail. Generally, it refers to a hard tube mirror, which has an angle of 0-90 degrees. Due to good illumination and a relatively thin diameter of 2.7-4.0 mm, the endoscope can conveniently pass through the narrow nasal cavity and the structure inside the nasal cavity to check the internal structure of the nasal cavity and the nasopharynx or even the nasal sinus. It is an important means for diagnosing sinusitis and nasal polyps. With the matching surgical instruments, the endoscope can also finely treat sinusitis and nasal polyps, so that the surgery can reach areas that cannot be reached by traditional surgery. During the endoscopic surgery, the blood, secretions and the like in the surgical area contaminate the endoscope lens, which blurs the field of view of the endoscope lens and affects the surgical effect and safety. In the prior art, the surgeon needs to frequently take out the endoscope for cleaning, which not only increases the surgery time but also increases the risk of the patient, and thus needs to be improved. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art and providing an endoscope with a washable lens.

[0004] The utility model adopts the following technical scheme:

[0005] An endoscope with a washable lens comprises an extension rod, an optical lens, a holding handle, an imaging device, a flushing device and a liquid suction device. The extension rod is hollow. The optical lens is arranged at the end of the extension rod. The holding handle is coaxially connected with the extension rod. The imaging device is connected with the optical lens and is used for presenting an image. The flushing device comprises a spray pipe and a spraying mechanism. The spray pipe is arranged inside the extension rod, one end of the spray pipe extends to the outside of the extension rod and faces the optical lens, and the other end of the spray pipe extends outward and is connected with the spraying mechanism. The liquid suction device comprises a liquid suction pipe, a liquid suction head and a negative pressure mechanism. The liquid suction pipe is arranged in the extension rod. The liquid suction head comprises a liquid suction ring and a liquid suction hole. The liquid suction ring is arranged around the end of the extension rod on the side close to the optical lens. The liquid suction ring is hollow and has a liquid suction channel that is in communication with the liquid suction pipe. The liquid suction holes are uniformly and spacedly arranged on the liquid suction ring and are in communication with the liquid suction channel. The liquid suction holes face the side of the optical lens. The negative pressure mechanism is connected with the liquid suction pipe to suck the liquid out of the liquid suction pipe.

[0006] Preferably, the liquid suction ring comprises a liquid suction section on the outside of the extension rod and an extension section on the inside of the extension rod. The diameter of the liquid suction section gradually increases on the side close to the optical lens. The liquid suction holes are arranged on the extension section and face the optical lens. The extension section is located inside the extension rod and is in communication with the liquid suction pipe.

[0007] Preferably, an auxiliary handle is vertically outwardly extended on the holding handle, and the spray pipe and the liquid suction pipe are outwardly extended through the auxiliary handle and connected with the spray mechanism and the negative pressure mechanism respectively.

[0008] Preferably, a spray control button and a negative pressure control button are further arranged on the auxiliary handle and connected with the spray mechanism and the negative pressure mechanism respectively.

[0009] Preferably, a spray driving pedal and a negative pressure driving pedal are further arranged and connected with the spray mechanism and the negative pressure mechanism respectively to control the working of the two mechanisms.

[0010] Preferably, the optical lens further comprises an optical fiber bundle arranged in the extension rod and outwardly extended from the holding handle to be connected with the imaging device.

[0011] Preferably, the inner diameter of the extension rod is larger than the diameter of the optical fiber bundle, and the spray pipe and the liquid suction pipe are arranged between the inner wall of the extension rod and the optical fiber bundle without interfering with each other.

[0012] Preferably, the spray pipe comprises an extension section arranged in the extension rod, a transition section connected with the end of the extension section and obliquely extended through the extension rod to the outside, and a spray section connected with the end of the transition section and completely facing the optical lens.

[0013] As can be seen from the above description of the utility model, compared with the prior art, the utility model has the beneficial effects that: the spray pipe can spray water towards the lens to flush the dirt on the lens, which is convenient for observation, and repeated removal of the lens for wiping is not needed, the efficiency of inspection and operation is improved, and since patients are often in sitting or lying positions during endoscopic examination, if water spraying is needed, the sprayed water will flow down along the extension rod, therefore, by arranging the liquid suction hole at the rear side of the lens, the liquid can be sucked away from the liquid suction hole in time when it flows down along the extension rod, the view of the optical lens is not shielded, and the water suction efficiency is effectively improved;

[0014] The optical lens, the spray pipe and the liquid suction pipe are connected with the outside through the holding handle and the auxiliary handle respectively, are separated from each other, interference is avoided, and the disassembly and maintenance of the device are facilitated;

[0015] The device can drive the spray mechanism and the negative pressure mechanism to work through the buttons and the pedals in two directions, and different doctors' operation habits can be used. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the utility model Figure 1 ;

[0017] Figure 2 The structure of the utility model Figure 2 ;

[0018] Figure 3 The utility model discloses an external device connection schematic view;

[0019] Figure 4 The utility model discloses a Figure 2 The partial close -up of A in the middle;

[0020] Figure 5 The utility model discloses the section view of the extension pole end part;

[0021] In the drawing: 1 - extension pole;2 - optical lens;21 - optical fiber bundle;3 - hold handle;31 - spray control button;32 - negative pressure control button;33 - spray drive pedal;34 - negative pressure drive pedal;4 - imaging device;5 - flushing device;51 - spray pipe;511 - extension section;512 - transition section;513 - spray section;52 - spray mechanism;6 - liquid suction device;61 - liquid suction pipe;62 - liquid suction head;621 - liquid suction ring;622 - liquid suction hole;623 - liquid suction channel;63 - negative pressure mechanism. DETAILED DESCRIPTION

[0022] The utility model will be further described below through specific implementation.

[0023] Referring to Figures 1 to 5 The utility model discloses a flushable lens's nasal endoscope, including extension pole 1, optical lens 2, hold handle 3, imaging device 4, flushing device 5, liquid suction device 6.

[0024] Extension pole 1 hollow molding is formed.Optical lens 2 sets up at extension pole 1 end;Hold handle 3 is coaxial with extension pole 1 and is connected;Imaging device 4 from hold handle 3 place enters extension pole 1 with optical lens 2 connection for presenting image.

[0025] Flushing device 5 includes spray pipe 51 and spray mechanism 52, and the spray pipe 51 is arranged in the extension pole 1, and one end extends to the outside of the extension pole 1 and is towards the mirror surface of the optical lens 2, and the other end extends outward and is connected with the spray mechanism 52, the spray pipe 51 can be towards the lens and spray water to flush the dirt on the lens, facilitate observation, do not need to take out the lens repeatedly and wipe, improve the efficiency of inspection and operation.Specifically, the spray pipe 51 includes an extension section 511 arranged in the extension pole 1, a transition section 512 connected with the end of the extension section 511 and extending obliquely through the extension pole 1 to the outside, and a spray section 513 connected with the end of the transition section 512 and completely towards the optical lens 2.Further, the spray mechanism 52 is a common pressurized water spraying device, which can input pressurized liquid into the spray pipe 51 for liquid spraying, which is not the focus of the present application, and will not be further described here.

[0026] The liquid suction device comprises a liquid suction pipe 61, a liquid suction head 62 and a negative pressure mechanism 63, the liquid suction pipe 61 is arranged in the extension rod 1; the liquid suction head 62 comprises a liquid suction ring 621 and a liquid suction hole 622, the liquid suction ring 621 is arranged around the outer side end of the extension rod 1 and is located on the side close to the optical lens 2, the liquid suction ring 621 is hollowly formed with a liquid suction channel 623 communicated with the liquid suction pipe 61, the liquid suction holes 622 are uniformly and spacedly arranged on the liquid suction ring 621 and communicated with the liquid suction channel 623, and the liquid suction holes 622 are directed to the side of the optical lens 2; the negative pressure mechanism 63 is connected with the liquid suction pipe 61 to suck out the liquid through the liquid suction pipe 61, the negative pressure mechanism 63 is a common negative pressure extraction device in the prior art, which can extract the liquid from one end to the other end, and is not the focus of the present application, and the structure and selection thereof will not be further described here. Since the patient is often in a sitting or lying position during the nasal endoscopic examination, if water spraying cleaning is needed, the sprayed water will flow down along the extension rod 1, therefore, by arranging the liquid suction hole 622 at the rear side of the lens, the liquid can be sucked away from the liquid suction hole 622 in time when flowing down along the extension rod 1, which can avoid shielding the field of view of the optical lens 2 and effectively improve the water suction efficiency. When the nasal endoscopic surgery is performed, an assistant will perform liquid suction operation on the side, therefore, it is not necessary to start the liquid suction device 6 or use the liquid suction device 6 to assist liquid suction.

[0027] Specifically, the extension rod 1 is divided into left and right sides by the liquid suction ring 621, the liquid suction ring 621 comprises a liquid suction section located on the outer side of the extension rod 1 and an extension section located on the inner side of the extension rod 1, the diameter of the liquid suction section gradually increases along the side close to the optical lens 2, and the liquid suction holes 622 are arranged on the extension section and directed to the optical lens 2; the extension section is located in the interior of the extension rod 1 and communicated with the liquid suction pipe 61.

[0028] Further, an auxiliary handle is vertically and outwardly extended and formed on the holding handle 3, the spraying pipe 51 and the liquid suction pipe 61 are outwardly extended through the auxiliary handle and connected with the spraying mechanism 52 and the negative pressure mechanism 63 respectively, and separated from each other, which can avoid interference and facilitate disassembly, maintenance and assembly of the device. The auxiliary handle is further provided with a spraying control button 31 and a negative pressure control button 32 connected with the spraying mechanism 52 and the negative pressure mechanism 63 respectively, and a spraying driving pedal 33 and a negative pressure driving pedal 34 which can control the two to work respectively, the device can drive the spraying mechanism 52 and the negative pressure mechanism 63 to work through the buttons and the pedals in two directions, and different doctors' operation habits can be used.

[0029] Preferably, the optical lens 2 further comprises an optical fiber bundle 21 arranged in the extension rod 1 and outwardly extended from the holding handle 3 to be connected with the imaging device 4. The inner diameter of the extension rod 1 is greater than the diameter of the optical fiber bundle 21, and the spraying pipe 51 and the liquid suction pipe 61 are arranged between the inner wall of the extension rod 1 and the European optical fiber bundle 21 and do not interfere with each other.

[0030] When the endoscope is used, the doctor extends the optical lens 2 at the end of the extension rod 1 into the patient's nasal cavity and observes the internal condition on the imaging device 4. When the lens is blocked by dirt, the doctor presses the spray control button 31 or steps on the spray drive pedal 33 to control the spray mechanism 52 to work, and liquid is sprayed from the spray pipe 51 to the optical lens 2 to flush the dirt. At the same time, the negative pressure control button 32 is pressed or the negative pressure drive pedal 34 is stepped on, and the liquid is sucked out of the liquid suction hole 622 through the negative pressure mechanism 63. During the inspection process, the lens does not need to be repeatedly taken out for wiping, which effectively improves the detection efficiency of the doctor and has high practicability.

[0031] The above is only a preferred embodiment of the present application, and therefore cannot limit the scope of the present application, that is, equivalent changes and modifications made according to the scope of the present application and the content of the specification should still be within the scope of the present application.

Claims

1. A washable lensed nasal endoscope, characterized by: The application relates to a telescopic rod, an optical lens, a holding handle, an imaging device, a flushing device and a liquid suction device, wherein the telescopic rod is hollow formed; the optical lens is arranged at the end of the telescopic rod; the holding handle is coaxially connected with the telescopic rod; the imaging device is arranged to extend into the telescopic rod from the holding handle and is connected with the optical lens to present an image; the flushing device comprises a spraying pipe and a spraying mechanism; the spraying pipe is arranged inside the telescopic rod, one end of the spraying pipe extends to the outside of the telescopic rod and faces the mirror surface of the optical lens, and the other end of the spraying pipe extends to the outside and is connected with the spraying mechanism; the liquid suction device comprises a liquid suction pipe, a liquid suction head and a negative pressure mechanism; the liquid suction pipe is arranged in the telescopic rod; the liquid suction head comprises a liquid suction ring and a liquid suction hole; the liquid suction ring is arranged around the end of the telescopic rod outside and is located on the side close to the optical lens; the liquid suction ring is hollow formed with a liquid suction channel which is communicated with the liquid suction pipe; the liquid suction holes are uniformly and spacedly arranged on the liquid suction ring and are communicated with the liquid suction channel; the liquid suction holes are directed to the side of the optical lens; and the negative pressure mechanism is connected with the liquid suction pipe to suck out the liquid through the liquid suction pipe.

2. The flushable lensed nasal endoscope of claim 1, wherein: The liquid suction ring comprises a liquid suction section located outside the telescopic rod and an extension section located inside the telescopic rod; the diameter of the liquid suction section gradually increases along the side close to the optical lens; and the liquid suction holes are arranged on the extension section and face the optical lens.

3. The flushable lensed nasal endoscope of claim 1, wherein: An auxiliary handle is vertically outwardly extended and formed on the holding handle; the spraying pipe and the liquid suction pipe extend outwardly through the auxiliary handle and are connected with the spraying mechanism and the negative pressure mechanism respectively.

4. The flushable lensed nasal endoscope of claim 3, wherein: Spraying control buttons and negative pressure control buttons which are connected with the spraying mechanism and the negative pressure mechanism respectively are further arranged on the auxiliary handle.

5. The flushable lensed nasal endoscope of claim 1, wherein: Spraying drive pedals and negative pressure drive pedals which are connected with the spraying mechanism and the negative pressure mechanism respectively and can control the two mechanisms to work respectively are further arranged.

6. The flushable lensed nasal endoscope of claim 1, wherein: The optical lens further comprises an optical fiber bundle which is arranged in the telescopic rod and extends outwardly from the holding handle and is connected with the imaging device.

7. The flushable lensed nasal endoscope of claim 6, wherein: The inner diameter of the telescopic rod is larger than the diameter of the optical fiber bundle; the spraying pipe and the liquid suction pipe are arranged between the inner wall of the telescopic rod and the optical fiber bundle and do not interfere with each other.

8. The flushable lensed nasal endoscope of claim 1, wherein: The spraying pipe comprises an extension section arranged in the telescopic rod, a transition section connected with the end of the extension section and extending to the outside through the telescopic rod, and a spraying section connected with the end of the transition section and completely facing the optical lens.

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