Stable lubricating device for colonoscope

Abstract

The utility model discloses a stable lubricating device for a colonoscope, which relates to the technical field of medical treatment and public health, and comprises a shell unit comprising a fixed shell, a lubricating liquid channel and a gear groove; the liquid storage unit comprises a liquid storage tank, a liquid storage tank cover and a liquid storage tank plug; the lubricating unit comprises a rotary liquid outlet gear ring, a follow-up gear and a limiting piece. The colonoscope lubricating device has the advantages that the fixed shell can provide a fixed channel for colonoscope examination, the influence of shaking on a patient in the using process is reduced, the colonoscope can be automatically lubricated in the advancing process through the lubricating unit, risks caused by waste and dripping of lubricating agents can be effectively reduced, and the service life of the colonoscope is prolonged. And meanwhile, the lubricating agent is replaced by clean water, so that the cleaning work of the colonoscope and the device can be easily completed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical and sanitary treatment, in particular to a stable lubricating device for a colonoscope. Background Art

[0002] In clinical colonoscopy and treatment, since the colonoscope needs to enter the patient's intestinal cavity through the anus, the scope body needs to be lubricated during the operation to reduce the resistance to the scope and the discomfort caused by the friction between the scope body and the anus. Therefore, before the patient undergoes a colonoscopy, the doctor will lubricate the colonoscope body with an endoscopic lubricant. The current lubrication method is to pour the endoscopic lubricant on the gauze, and then apply the gauze dipped in the endoscopic lubricant to the colonoscope body.

[0003] Existing lubrication methods have many disadvantages. Endoscopic lubricant can easily seep through the gauze and drip onto the ground, which not only causes a waste of endoscopic lubricant, but the dripping liquid also poses a risk of falling to staff and patients. In the process of lubricating the body of the colonoscope, excessive endoscopic lubricant seeping out of the gauze will soak the doctor's gloves, which will hinder the doctor's hand movements, and the repeatedly poured endoscopic lubricant is easily contaminated.

[0004] In view of the above problems, a stable lubrication device for a colonoscope is proposed to solve the above problems. Utility Model Content

[0005] Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0006] In view of the above-mentioned prior art problems, the present utility model is proposed.

[0007] The utility model aims to provide a stable lubricating device for a colonoscope, and aims to provide a stable device and solve the problems of waste and inconvenience of traditional lubrication methods.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a stable lubrication device for a colonoscope, comprising a housing unit, including a fixed housing, a lubricating liquid channel and a gear groove, wherein the lubricating liquid channel and the gear groove are arranged on the fixed housing, and the lubricating liquid channel and the gear groove are communicated and matched;

[0009] A liquid storage unit, comprising a liquid storage tank, a liquid storage tank cover and a liquid storage tank plug, wherein the liquid storage tank is arranged at the upper end of the fixed housing and communicates with the lubricating liquid channel, and the liquid storage tank cover and the liquid storage tank plug are arranged on the liquid storage tank;

[0010] The lubrication unit comprises a rotating liquid outlet gear ring, a follower gear and a limiter. The rotating liquid outlet gear ring and the follower gear are arranged in the gear groove and mesh with each other. The limiter is arranged at the upper end of the rotating liquid outlet gear ring.

[0011] As a preferred solution of the utility model stable lubrication device for colonoscope, the fixed shell is a variable diameter object with a larger upper part and a smaller lower part, whose generatrix is ​​a curve, and whose center position is a colonoscope through hole that passes through from top to bottom, and whose diameter is larger than the diameter of the end of the colonoscope lens.

[0012] As a preferred solution of the stable lubrication device for colonoscope of the utility model, wherein: the uppermost end of the lubricating liquid channel is the liquid inlet channel, the lower end of which is connected to the liquid separating ring, the lower end of the liquid separating ring is provided with a lubricating liquid cavity, the rotating liquid outlet gear ring is arranged in the middle of the lubricating liquid cavity and separates it, the inner side of the lubricating liquid cavity is provided with a liquid outlet hole, and the liquid outlet hole is connected to the through hole of the colonoscope.

[0013] As a preferred solution of the stable lubrication device for colonoscope of the utility model, there are multiple lubricating liquid chambers evenly arranged along the circumferential direction of the fixed shell, and multiple liquid outlet holes are evenly opened on the inner side of the lower section of the lubricating liquid chamber.

[0014] As a preferred solution of the utility model of a stable lubrication device for a colonoscope, wherein: the gear groove includes an annular gear groove and a follower gear groove, the annular gear groove is arranged in the middle of the lubricating fluid chamber, the follower gear groove connects the annular gear groove and the colonoscope through hole, and a plurality of follower gear grooves are evenly arranged along the circumferential direction of the colonoscope through hole.

[0015] As a preferred solution of the utility model stable lubrication device for colonoscope, wherein: the liquid reservoir is connected with the liquid inlet channel at its tail end, and a liquid inlet hole is provided at its front end, and the liquid inlet hole cooperates with the liquid reservoir plug, and the liquid reservoir cover is provided at the upper end of the liquid reservoir, which is made of transparent material and has scale values.

[0016] As a preferred solution of the stable lubrication device for colonoscope of the utility model, the rotating liquid outlet gear ring is arranged in the annular gear groove, the inner side of which is a rotating gear, and a plurality of liquid outlet baffles are evenly arranged on the outer side, the length of the liquid outlet baffle is greater than twice the length of the lubricating liquid cavity, and a limit member groove is opened at the upper end thereof.

[0017] As a preferred solution of the stable lubrication device for colonoscope of the utility model, wherein: the follower gear is arranged in the follower gear groove, which cooperates with the rotating liquid outlet gear ring, and the follower gear enters the colonoscope through hole by one to two millimeters, so that the interval between the follower gears is smaller than the diameter of the end of the colonoscope lens.

[0018] As a preferred solution of the stable lubrication device for colonoscope of the utility model, the limiting member includes a limiting spring and a limiting block, the lower end of the limiting spring is connected to the bottom end of the limiting member groove, and the upper end thereof is connected to the limiting block.

[0019] As a preferred solution of the utility model stable lubrication device for colonoscope, wherein: the lower end of the limit block is a cubic structure, and the part thereof extending out of the limit piece groove is a triangular inclined surface, which can cooperate with the lubricating liquid cavity.

[0020] The beneficial effects of the stable lubrication device for a colonoscope of the utility model are as follows: the fixed shell can provide a fixed channel for colonoscopy, reducing the impact of shaking during use on the patient, and the colonoscope can be automatically lubricated during the advancement process through the lubrication unit, which can effectively reduce the waste of lubricant and the risk of dripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0022] Figure 1 It is an overall schematic diagram of the stable lubrication device in the utility model.

[0023] Figure 2 It is a cross-sectional view of the stable lubrication device in the utility model.

[0024] Figure 3 It is an exploded view of the stable lubrication device in the utility model.

[0025] Figure 4 It is a cross-sectional view of the position of the liquid separation ring of the fixed shell in the utility model.

[0026] Figure 5 It is a cross-sectional view of the position of the annular gear groove of the fixed housing in the utility model. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figure 1 , which is the first embodiment of the utility model, and this embodiment provides a stable lubrication device for a colonoscope, including a housing unit 100, including a fixed housing 101, a lubricating liquid channel 102 and a gear groove 103, the lubricating liquid channel 102 and the gear groove 103 are arranged on the fixed housing 101, and the lubricating liquid channel 102 and the gear groove 103 are connected and matched.

[0032] Furthermore, the fixed shell 101 is a curved variable diameter object that is larger at the top and smaller at the bottom, and the center position of the fixed shell 101 is a colonoscope through hole 101a that runs through the top and bottom, and the diameter of the colonoscope through hole 101a is about 1 millimeter larger than the diameter of the end of the colonoscope lens.

[0033] It should be noted that the colonoscope insertion tube is a cylindrical rubber hose, and the diameter of the end of the colonoscope lens used ranges from 10.5 to 12.8 mm.

[0034] When in use, the fixed shell 101 is placed on the buttocks of the patient, and then the colonoscope is passed through the colonoscope through hole 101a into the patient's area to be examined for examination.

[0035] In summary, the fixed housing 101 can provide a fixed channel for colonoscopy, thereby reducing the impact of shaking on the patient during use.

[0036] Example 2

[0037] Reference Figure 1 to Figure 5 , which is the second embodiment of the utility model, based on the previous embodiment, this embodiment provides a stable lubrication device for a colonoscope, including a housing unit 100, including a fixed housing 101, a lubricating liquid channel 102 and a gear groove 103, the lubricating liquid channel 102 and the gear groove 103 are arranged on the fixed housing 101, and the lubricating liquid channel 102 and the gear groove 103 are communicated and matched;

[0038] The liquid storage unit 200 includes a liquid storage tank 201, a liquid storage tank cover 202 and a liquid storage tank plug 203. The liquid storage tank 201 is disposed at the upper end of the fixed housing 101 and communicates with the lubricating liquid channel 102. The liquid storage tank cover 202 and the liquid storage tank plug 203 are disposed on the liquid storage tank 201.

[0039] The lubrication unit 300 includes a rotating liquid outlet gear ring 301, a follower gear 302 and a limiter 303. The rotating liquid outlet gear ring 301 and the follower gear 302 are arranged in the gear groove 103 and mesh with each other. The limiter 303 is arranged on the upper end of the rotating liquid outlet gear ring 301.

[0040] Furthermore, the fixed shell 101 is a variable diameter object that is larger at the top and smaller at the bottom, and its generatrix is ​​a curve. Its center position is a colonoscope through hole 101a that runs through from top to bottom, and its diameter is larger than the diameter of the end of the colonoscope lens.

[0041] Furthermore, the uppermost end of the lubricating liquid channel 102 is a liquid inlet channel 102a, and the lower end thereof is connected to a liquid separator ring 102b. A lubricating liquid cavity 102c is provided at the lower end of the liquid separator ring 102b. A rotating liquid outlet gear ring 301 is provided in the middle of the lubricating liquid cavity 102c and separates it. A liquid outlet hole 102d is provided on the inner side of the lubricating liquid cavity 102c, and the liquid outlet hole 102d is connected to the colonoscope through hole 101a.

[0042] It should be noted that the width of the upper section of the lubricating fluid chamber 102c from the blocked position is half of the width of the lower section.

[0043] Furthermore, a plurality of lubricating liquid chambers 102c are evenly arranged along the circumferential direction of the fixed shell 101, and a plurality of liquid outlet holes 102d are evenly opened on the inner side of the lower section of the lubricating liquid chamber 102c.

[0044] Furthermore, the gear groove 103 includes an annular gear groove 103a and a follower gear groove 103b. The annular gear groove 103a is arranged in the middle of the lubricating fluid chamber 102c. The follower gear groove 103b connects the annular gear groove 103a and the colonoscope through hole 101a, and a plurality of follower gear grooves 103b are evenly arranged along the circumferential direction of the colonoscope through hole 101a.

[0045] Furthermore, the liquid storage tank 201 is connected to the liquid inlet channel 102a at its tail end, and a liquid inlet hole 201a is provided at its front end, and the liquid inlet hole 201a cooperates with the liquid storage tank plug 203. The liquid storage tank cover 202 is provided at the upper end of the liquid storage tank 201, which is made of transparent material and has scale values.

[0046] Furthermore, the rotating liquid outlet gear ring 301 is arranged in the annular gear groove 103a, the inner side of which is the rotating gear 301a, and a plurality of liquid outlet baffles 301b are evenly arranged on the outer side. The length of the liquid outlet baffle 301b is greater than twice the length of the lubricating liquid chamber 102c, and a limit member groove 301c is opened at its upper end.

[0047] It should be noted that the width of the gap between the liquid outlet baffles 301b is consistent with the width of the upper section of the lubricating liquid chamber 102c.

[0048] Furthermore, the follower gear 302 is arranged in the follower gear groove 103b, which cooperates with the rotating liquid outlet gear ring 301, and the follower gear 302 enters the colonoscope through hole 101a by one to two millimeters, so that the interval between the follower gears 302 is smaller than the diameter of the end of the colonoscope lens.

[0049] Furthermore, the limiting member 303 includes a limiting spring 303a and a limiting block 303b. The lower end of the limiting spring 303a is connected to the bottom end of the limiting member slot 301c, and the upper end thereof is connected to the limiting block 303b.

[0050] Furthermore, the lower end of the limiting block 303b is a cubic structure, and the portion thereof extending out of the limiting member slot 301c is a triangular inclined surface 303b-1, which can cooperate with the lubricating fluid chamber 102c.

[0051] When in use, the fixed shell 101 is placed on the patient's buttocks, and lubricant is injected into the liquid storage tank 201, and it is ensured that the liquid inlet hole 201a of the liquid storage tank is upward, and the lubricating liquid moves toward the liquid outlet hole 102d, and then the colonoscope is passed through the colonoscope through hole 101a into the patient's examination site for examination. During the advancement of the colonoscope, the follower gear 302 will be driven to rotate, and then the rotating liquid outlet gear ring 301 will be driven to rotate clockwise. During the rotation process, when the gap between the liquid outlet baffles 301b coincides with the lubricating liquid cavity 102c, the lubricant can lubricate the colonoscope through the liquid outlet hole 102d. When the liquid outlet baffle 301b coincides with the lubricating liquid cavity 102c, repeated lubrication of the lubricant can be prevented, resulting in waste and dripping of the lubricant; if it is necessary to retreat during the examination process, the rotating liquid outlet gear ring 301 will be rotated counterclockwise, and at this time, the limit block 303b will be pressed against the side wall of the lubricating liquid cavity 102c, causing it to stop rotating, that is, stop lubricating the colonoscope.

[0052] In summary, the lubrication unit 300 can automatically lubricate the colonoscope during its advancement, which can effectively reduce the waste of lubricant and the risk of dripping.

[0053] Example 3

[0054] Reference Figure 1 to Figure 5 , which is the third embodiment of the utility model, based on the above embodiments, this embodiment provides a stable lubrication device for a colonoscope, including a housing unit 100, including a fixed housing 101, a lubricating liquid channel 102 and a gear groove 103, the lubricating liquid channel 102 and the gear groove 103 are arranged on the fixed housing 101, and the lubricating liquid channel 102 and the gear groove 103 are communicated and matched;

[0055] The liquid storage unit 200 includes a liquid storage tank 201, a liquid storage tank cover 202 and a liquid storage tank plug 203. The liquid storage tank 201 is disposed at the upper end of the fixed housing 101 and communicates with the lubricating liquid channel 102. The liquid storage tank cover 202 and the liquid storage tank plug 203 are disposed on the liquid storage tank 201.

[0056] The lubrication unit 300 includes a rotating liquid outlet gear ring 301, a follower gear 302 and a limiter 303. The rotating liquid outlet gear ring 301 and the follower gear 302 are arranged in the gear groove 103 and mesh with each other. The limiter 303 is arranged on the upper end of the rotating liquid outlet gear ring 301.

[0057] Furthermore, the fixed shell 101 is a variable diameter object that is larger at the top and smaller at the bottom, and its generatrix is ​​a curve. Its center position is a colonoscope through hole 101a that runs through from top to bottom, and its diameter is larger than the diameter of the end of the colonoscope lens.

[0058] Furthermore, the uppermost end of the lubricating liquid channel 102 is a liquid inlet channel 102a, and the lower end thereof is connected to a liquid separator ring 102b. A lubricating liquid cavity 102c is provided at the lower end of the liquid separator ring 102b. A rotating liquid outlet gear ring 301 is provided in the middle of the lubricating liquid cavity 102c and separates it. A liquid outlet hole 102d is provided on the inner side of the lubricating liquid cavity 102c, and the liquid outlet hole 102d is connected to the colonoscope through hole 101a.

[0059] It should be noted that the width of the upper section of the lubricating fluid chamber 102c from the blocked position is half of the width of the lower section.

[0060] Furthermore, a plurality of lubricating liquid chambers 102c are evenly arranged along the circumferential direction of the fixed shell 101, and a plurality of liquid outlet holes 102d are evenly opened on the inner side of the lower section of the lubricating liquid chamber 102c.

[0061] Furthermore, the gear groove 103 includes an annular gear groove 103a and a follower gear groove 103b. The annular gear groove 103a is arranged in the middle of the lubricating fluid chamber 102c. The follower gear groove 103b connects the annular gear groove 103a and the colonoscope through hole 101a, and a plurality of follower gear grooves 103b are evenly arranged along the circumferential direction of the colonoscope through hole 101a.

[0062] Furthermore, the liquid storage tank 201 is connected to the liquid inlet channel 102a at its tail end, and a liquid inlet hole 201a is provided at its front end, and the liquid inlet hole 201a cooperates with the liquid storage tank plug 203. The liquid storage tank cover 202 is provided at the upper end of the liquid storage tank 201, which is made of transparent material and has scale values.

[0063] Furthermore, the rotating liquid outlet gear ring 301 is arranged in the annular gear groove 103a, the inner side of which is the rotating gear 301a, and a plurality of liquid outlet baffles 301b are evenly arranged on the outer side. The length of the liquid outlet baffle 301b is greater than twice the length of the lubricating liquid chamber 102c, and a limit member groove 301c is opened at its upper end.

[0064] It should be noted that the width of the gap between the liquid outlet baffles 301b is consistent with the width of the upper section of the lubricating liquid chamber 102c.

[0065] Furthermore, the follower gear 302 is arranged in the follower gear groove 103b, which cooperates with the rotating liquid outlet gear ring 301, and the follower gear 302 enters the colonoscope through hole 101a by one to two millimeters, so that the interval between the follower gears 302 is smaller than the diameter of the end of the colonoscope lens.

[0066] Furthermore, the limiting member 303 includes a limiting spring 303a and a limiting block 303b. The lower end of the limiting spring 303a is connected to the bottom end of the limiting member slot 301c, and the upper end thereof is connected to the limiting block 303b.

[0067] Furthermore, the lower end of the limiting block 303b is a cubic structure, and the portion thereof extending out of the limiting member slot 301c is a triangular inclined surface 303b-1, which can cooperate with the lubricating fluid chamber 102c.

[0068] When in use, clean water is injected into the liquid storage tank 201 or connected through the liquid inlet hole 201a, and the colonoscope is repeatedly stretched through the colonoscope through hole 101a. Driven by the follower gear 302, the liquid outlet gear ring 301 is rotated to cooperate with the lubricating liquid channel 102 to complete the cleaning of the colonoscope and the lubrication device itself.

[0069] In summary, cleaning of the colonoscope and the device itself can be easily accomplished by replacing the lubricant with clean water.

[0070] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0071] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0072] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A stable lubrication device for a colonoscope, characterized in that: include, A housing unit (100) comprises a fixed housing (101), a lubricating liquid channel (102) and a gear groove (103), wherein the lubricating liquid channel (102) and the gear groove (103) are arranged on the fixed housing (101), and the lubricating liquid channel (102) and the gear groove (103) are in communication and coordination with each other; A liquid storage unit (200), comprising a liquid storage tank (201), a liquid storage tank cover (202) and a liquid storage tank plug (203), wherein the liquid storage tank (201) is arranged at the upper end of the fixed housing (101) and is in communication with the lubricating liquid channel (102), and the liquid storage tank cover (202) and the liquid storage tank plug (203) are arranged on the liquid storage tank (201); The lubrication unit (300) comprises a rotating liquid outlet gear ring (301), a follower gear (302) and a stopper (303); the rotating liquid outlet gear ring (301) and the follower gear (302) are arranged in the gear groove (103) and mesh with each other; and the stopper (303) is arranged at the upper end of the rotating liquid outlet gear ring (301).

2. The stable lubrication device for colonoscope according to claim 1, characterized in that: The fixed shell (101) is a variable diameter object that is larger at the top and smaller at the bottom, and its center is a colonoscope through hole (101a) that runs through from top to bottom, and its diameter is larger than the diameter of the end of the colonoscope lens.

3. The stable lubrication device for colonoscope according to claim 2, characterized in that: The uppermost end of the lubricating liquid channel (102) is a liquid inlet channel (102a), and the lower end thereof is connected to a liquid separator ring (102b). A lubricating liquid cavity (102c) is provided at the lower end of the liquid separator ring (102b). The rotating liquid outlet gear ring (301) is provided in the middle of the lubricating liquid cavity (102c) and separates it. A liquid outlet hole (102d) is provided inside the lubricating liquid cavity (102c), and the liquid outlet hole (102d) is connected to the colonoscope through hole (101a).

4. The stable lubrication device for colonoscope according to claim 3, characterized in that: A plurality of the lubricating liquid chambers (102c) are evenly arranged along the circumferential direction of the fixed shell (101), and a plurality of the liquid outlet holes (102d) are evenly opened on the inner side of the lower section of the lubricating liquid chamber (102c).

5. The stable lubrication device for colonoscope according to claim 4, characterized in that: The gear groove (103) includes an annular gear groove (103a) and a follower gear groove (103b), wherein the annular gear groove (103a) is arranged in the middle of the lubricating fluid chamber (102c), and the follower gear groove (103b) connects the annular gear groove (103a) and the colonoscope through hole (101a), and a plurality of follower gear grooves (103b) are evenly arranged along the circumferential direction of the colonoscope through hole (101a).

6. The stable lubrication device for colonoscope according to claim 5, characterized in that: The liquid storage tank (201) is connected to the liquid inlet channel (102a) at its rear end, and is provided with a liquid inlet hole (201a) at its front end. The liquid inlet hole (201a) cooperates with the liquid storage tank plug (203). The liquid storage tank cover (202) is provided at the upper end of the liquid storage tank (201) and is made of a transparent material and has scale values.

7. The stable lubrication device for colonoscope according to claim 5 or 6, characterized in that: The rotating liquid outlet gear ring (301) is arranged in the annular gear groove (103a), the inner side of which is a rotating gear (301a), and the outer side is evenly provided with a plurality of liquid outlet baffles (301b), the length of the liquid outlet baffles (301b) is greater than twice the length of the lubricating liquid cavity (102c), and a limiter groove (301c) is provided at the upper end thereof.

8. The stable lubrication device for colonoscope according to claim 7, characterized in that: The follower gear (302) is arranged in the follower gear groove (103b), and cooperates with the rotating liquid outlet gear ring (301). The follower gear (302) enters the colonoscope through hole (101a) by one to two millimeters, so that the interval between the follower gears (302) is smaller than the diameter of the end of the colonoscope lens.

9. The stable lubrication device for colonoscope according to claim 8, characterized in that: The limiting member (303) comprises a limiting spring (303a) and a limiting block (303b); the lower end of the limiting spring (303a) is connected to the bottom end of the limiting member slot (301c), and the upper end of the limiting spring (303a) is connected to the limiting block (303b).

10. The stable lubrication device for colonoscope according to claim 9, characterized in that: The lower end of the limiting block (303b) is a cubic structure, and the portion thereof extending out of the limiting member slot (301c) is a triangular inclined surface (303b-1), which can cooperate with the lubricating fluid chamber (102c).

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