Sealing cover

Abstract

The utility model provides a sealing cover, which is used for sealing an interface at the near end of a bronchoscope, the sealing cover comprises a frame body sleeved on the interface and a cover plate for sealing one axial end of the frame body, a convex ring is arranged on the inner surface of the frame body, the inner circumferential surface of the convex ring is abutted against the outer circumferential surface of the interface, and the cover plate is arranged on the outer circumferential surface of the frame body. The protruding part of the connector abuts against the end face, right facing the cover plate, of the protruding ring. According to the utility model, the friction force between the inner peripheral surface of the convex ring and the outer peripheral surface of the interface is matched with the convex part to abut against the end surface of the convex ring opposite to the cover plate, so that the sealing cover is stably fixed on the interface and is prevented from falling off, and the sealing effect is obvious; meanwhile, the thickness of the frame body is increased through the convex ring so that the frame body can be firmly fixed to the connector, the cover plate or the part, close to the cover plate, of the frame body is subjected to tensile deformation under the action of outward traction force, the action of the traction force is further differentiated, transmission of the traction force to the convex ring is reduced, and the falling risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, relate to a sealing cover. BACKGROUND

[0002] Hard bronchoscope (hard mirror) is now a kind of medical equipment, along with the development of medicine, hard mirror is constantly developing and perfecting, however, along with the popularization of soft fiber optic bronchoscope (bronchoscope) in clinic, the application of hard mirror has obviously reduced, compared with hard mirror, bronchoscope needs to occupy certain airway space in the operation process, generally will not cause ventilation dysfunction for healthy adult, but for children or airway stenosis person can affect its ventilation function, even threaten life safety.

[0003] However, the modern value of hard mirror is to allow bronchoscope and other instruments to enter the airway as an intervention channel, and the bronchoscope is observed and positioned through the ocular lens, and the operations such as stent release, laser ablation, foreign body and cryo, electrocision are carried out under direct vision. Therefore, hard mirror is the main tool for modern interventional treatment of lung disease, and has broad application prospect.

[0004] Hard mirror mainly includes host system, observation system, mirror sheath 10 and other instruments, such as Figure 1 As shown in the figure, the proximal end of the mirror sheath 10 is composed of a central ocular lens interface 101 and three side interfaces. The central interface with the largest inner diameter can be closed or opened to facilitate the observation of the ocular lens and the entry and exit of other instruments, and can be used for foreign body and tumor removal surgery. The other three side interfaces are: light source interface 102, breathing machine interface 103 and high-frequency jet breathing machine interface 104. Among them, the interface at the top is the light source interface 102, which is used to provide light source and lead out image. The interface on the side of the breathing machine interface 103 is the high-frequency jet breathing machine interface 104.

[0005] In the operation process of using hard mirror, the patient is in anesthetized state and has no autonomous respiration or very weak autonomous respiration, so it is necessary to use breathing machine or high-frequency breathing machine to deliver oxygen to maintain respiration. In this case, if airtight circuit cannot be formed between the breathing machine and the patient, the efficiency of the breathing machine will be greatly reduced, or even no oxygen supply, so that the patient is in a dangerous state of hypoxia. Therefore, the above interfaces of the hard mirror need to be sealed.

[0006] At present, the commonly used sealing structure of hard mirror interface on the market is sealing plug, which is made of stainless steel and is connected to the inside of the interface through threads to realize the sealing of the interface. However, it has the following disadvantages: first, the threaded interface of the sealing plug is not easy to disinfect, which affects the hygiene of use; second, when the sealing plug is rotated into the inside of the interface, the operation time is long, which affects the use efficiency. The utility model discloses a kind of sealing caps, which are used to seal the interface of the proximal end of bronchoscope.

[0007] To overcome the above technical problems, the utility model provides a sealing cap which is convenient to install and disassemble and stable in connection.

[0008] According to the above concept, the utility model adopts the technical scheme of:

[0009] A sealing cap is used to seal the interface of the proximal end of a bronchoscope. The sealing cap comprises a frame body sleeved on the interface, and a cover plate closing an axial end of the frame body. An inner surface of the frame body is provided with a convex ring. An inner circumferential surface of the convex ring abuts against an outer circumferential surface of the interface. A protruding portion of the interface abuts against an end surface of the convex ring opposite to the cover plate.

[0010] Preferably, the diameter d2 of the inner circumferential surface of the convex ring is less than the diameter d3 of the outer circumferential surface of the interface, and d3-d2≥0.5 mm.

[0011] Preferably, the frame body and the cover plate are integrally formed.

[0012] Preferably, the frame body is a transparent silica gel frame, and the hardness y of the frame body satisfies 40A≤y≤70A.

[0013] Preferably, the thickness h1 of the convex ring satisfies 1 mm≤h1≤5 mm, and the width h2 of the protruding portion satisfies h2≤h1.

[0014] Preferably, the cover plate is provided with at least one through hole. The sealing cap further comprises a connecting piece, and at least one plugging block for plugging the through hole. One end of the connecting piece is fixedly connected with the frame body, and the other end of the connecting piece is fixedly connected with the plugging block.

[0015] Preferably, the plugging block comprises a tapered head for penetrating through the through hole, a fixed portion connected with the connecting piece, and a connecting portion fixed between the tapered head and the fixed portion. The diameter of the connecting portion is less than the maximum diameter of the tapered head.

[0016] Preferably, the diameter of the connecting portion is greater than the diameter of the through hole.

[0017] Preferably, the diameter d4 of the through hole satisfies 4 mm≤d4≤5 mm, and / or the wall thickness h3 of the cover plate satisfies 0.6 mm≤h3≤1 mm.

[0018] Preferably, the interface comprises an interface body and a fixed frame fixed on the outer circumferential surface of the interface body. The inner circumferential surface of the convex ring abuts against the outer circumferential surface of the fixed frame, and the protruding portion is arranged on the outer circumferential surface of the fixed frame.

[0019] The utility model has at least the following beneficial effects:

[0020] The sealing cover is firmly fixed on the interface, the sealing effect is remarkable, and the sealing cover can be quickly sleeved on the interface of the proximal end of the hard bronchoscope. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of an existing hard bronchoscope;

[0022] Figure 2 is a perspective view of a first embodiment of the sealing cover provided by the utility model;

[0023] Figure 3 is a plan view of the sealing cover provided by the utility model shown in the figure; Figure 2

[0024] Figure 4 is a sectional view of the sealing cover provided by the utility model along the line A-A; Figure 3

[0025] Figure 5 is a perspective view of the sealing cover sleeved on the proximal end interface of the hard bronchoscope provided by the utility model shown in the figure; Figure 2

[0026] Figure 6 is a front view of the sealing cover sleeved on the proximal end interface of the hard bronchoscope provided by the utility model shown in the figure; Figure 5

[0027] Figure 7 is an enlarged view of the B part shown in the figure; Figure 6

[0028] Figure 8 is a perspective view of a second embodiment of the sealing cover provided by the utility model;

[0029] Figure 9 Figure 8 is a front view of the sealing cover provided by the utility model shown in the figure;

[0030] Figure 10 is a perspective view of a third embodiment of the sealing cover provided by the utility model;

[0031] ​​​​​​Figure 11 is Figure 10 The utility model provides a top view of the sealing cover provided by the utility model shows.

[0032] Figure 12 is Figure 11 The utility model provides a sealing cover along the section view of B-B line provided by the utility model shows.

[0033] Figure 13 is the perspective view of the fourth embodiment of the sealing cover provided by the utility model.

[0034] Figure 14 is Figure 13 The utility model provides a sealing cover and the structure schematic view of interface provided by the utility model shows.

[0035] Explanation of the attached drawings:

[0036] 1-frame body;11-convex ring;111-end surface;2-cover plate;21-through hole;3-outer edge portion;4-connection piece;5-plug block;51-conical head;52-connection portion;53-fixing portion;6-interface body;7-fixing frame;10-hardness bronchoscope;101, 101'-central eyepiece interface;102-light source interface;103-breathing machine interface;104-high frequency jet breathing machine interface;105 convex part. Specific implementation

[0037] The sealing cover provided by the utility model is clearly and completely explained below in combination with the attached drawings. It can be understood that the described embodiment is only part of the embodiment of the utility model, not all the embodiment, and the utility model can be implemented in many other ways different from the description.

[0038] Unless otherwise defined, all the technical terms and scientific terms used in the specification are the same as the meanings commonly understood by the ordinary skilled person in the technical field to which the utility model belongs. The terms used in the specification are only for describing the specific embodiment, and are not intended to limit the utility model.

[0039] It should be noted that all the directionality indications in the embodiment of the specification are only used for explaining the relative position relationship, movement condition and the like between the components in a certain specific posture, and if the specific posture changes, the directionality indication also changes accordingly.

[0040] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description and should not be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features with "first" and "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0041] The technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the scope of protection required by the present application.

[0042] In the present application, the axial direction refers to the direction parallel to the connecting line of the distal end center and the proximal end center of the assembly; the radial direction refers to the direction perpendicular to the above-mentioned axial direction.

[0043] As shown in Figures 1 to 7 In one embodiment, the present application provides a sealing cover for sealing the interface of the proximal end of bronchoscope 10, the sealing cover comprises a frame 1 sleeved on the interface, a cover plate 2 closing the axial end of the frame 1, the inner surface of the frame 1 is provided with a convex ring 11, the inner circumferential surface of the convex ring 11 abuts against the outer circumferential surface of the interface, and the convex portion 105 of the interface abuts against the end surface 111 of the convex ring 11 opposite to the cover plate 2.

[0044] Preferably, as shown in Figure 1 As shown in the drawings, the bronchoscope 10 comprises an interface at the proximal end, an outlet at the distal end, and a channel arranged between the interface and the outlet, the two ends of the channel are communicated with the interface and the outlet respectively, so as to facilitate the flow of gas and the passing of instruments, and realize the detection and treatment of the bronchus of the lung. The above is the prior art, which will not be described here. Further, the interface at this position can be a central eyepiece interface 101, a light source interface 102, a breathing machine interface 103 and a high-frequency jet breathing machine interface 104. In the present embodiment, the sealing cover is mainly used for sealing the central eyepiece interface 101. Hereinafter, the central eyepiece interface 101 will be taken as an example for description, and for the sake of simplicity, it is uniformly named as interface. In other embodiments, the sealing cover can also be used for sealing other interfaces, such as the light source interface 102, the breathing machine interface 103 or the high-frequency jet breathing machine interface 104, etc. The user can select and set according to the needs, which is not limited here.

[0045] It should be noted that: the above proximal end is the end close to the operator, and the above distal end is the end away from the operator, which is the conventional definition of the person skilled in the art, which will not be described here; the interface 101 is provided with a convex portion 105, as Figure 7As shown, the protruding portion 105 can be annular and arranged around the outer circumferential surface of the interface 101, can be integrally formed with the interface 101, can be fixedly connected, etc., which is not specifically limited here.

[0046] More preferably, the frame body 1 is used to cover the interface 101 so as to realize sealing of the interface 101.

[0047] Still more preferably, the cover plate 2 is arranged at the end of the frame body 1 axially away from the interface 101, so as to close the axial opening of the frame body 1 away from the interface 101, and realize sealing of the interface 101.

[0048] It should be noted that the frame body 1 can be a cylinder, or other geometric bodies, etc., and the specific shape of the frame body 2 can be set as needed, which is not specifically limited here; further, the shape of the cover plate 2 is adapted to the shape of the frame body 1, for example, the cover plate 2 can be disc-shaped, or other geometric bodies, etc., and the specific shape of the cover plate 2 can be set as needed, which is not specifically limited here.

[0049] Further preferably, the convex ring 11 is formed by extending radially inward from the inner circumferential surface of the frame body 1, and the convex ring 11 is annular so as to surround the outer circumferential surface of the interface 101 in 360 degrees, so as to fix the sealing cover on the interface 101 and realize sealing of the interface 101. Preferably, the convex ring 11 is circular, and the central axis of the convex ring 11 is collinear with the central axis of the frame body 1, so as to ensure uniformity of the wall thickness of the frame body 1, so that the force of the frame body 1 acting on the interface 101 is more uniform, so as to further enhance the sealing effect and structural stability.

[0050] Still further, the convex ring 11 is arranged in space with the cover plate 2, so that there is a certain space between the convex ring 11 and the cover plate 2, so as to accommodate the protruding portion 105 of the interface 101, so that the protruding portion 105 abuts against the end surface 111 of the convex ring 11.

[0051] Still further, the inner circumferential surface of the convex ring 11 abuts against the outer circumferential surface of the interface 101, so as to realize close connection of the two, so as to ensure the sealing effect of the interface 101, and prevent gas from passing through, and at the same time, there is a friction force between the inner circumferential surface of the convex ring 11 and the outer circumferential surface of the interface 101.

[0052] At the same time, the protruding portion 105 of the interface 101 abuts against the end surface 111 of the convex ring 11 opposite to the cover plate 2, as shown in Figure 4 and Figure 7 As shown, the protruding portion 105 passes through the inside of the convex ring 11 and is between the convex ring 11 and the cover plate 2, so as to facilitate the protruding portion 105 to abut against the end surface 111 of the convex ring 11, so as to stably fix the sealing cover on the interface 101 and prevent it from falling off.

[0053] It should be noted that: it is the friction between the inner circumferential surface of the convex ring 11 and the outer circumferential surface of the interface 101 and the abutment of the protruding part 105 on the end surface of the convex ring 11, so as to realize the stable connection of the sealing cover and the interface 101, prevent the sealing cover from falling off the interface 101, and ensure the sealing effect; at the same time, the setting of the convex ring 11 increases the thickness of the frame 1, so as to be firmly fixed on the interface 101, and the thickness of the cover plate 2 and the part of the frame 1 close to the cover plate 2 is thinner than the part of the frame 1 provided with the convex ring 11, so that the cover plate 2 and the part of the frame 1 close to the cover plate 2 can be stretched and deformed when subjected to the outward traction force, preventing the traction force from being transmitted to the convex ring 11, thereby effectively preventing the sealing cover from falling off and being more stable.

[0054] In an embodiment, the diameter d2 of the inner circumferential surface of the convex ring 11 is less than the diameter d3 of the outer circumferential surface of the interface 101, wherein d3-d2≥0.5mm, as shown in Figure 4 and Figure 7 .

[0055] Preferably, the diameter d2 of the inner circumferential surface of the convex ring 11 is less than the diameter d3 of the outer circumferential surface of the interface 101, so as to realize the interference fit of the sealing cover and the interface 101, so as to more stably fix the sealing cover on the interface 101, prevent it from easily falling off, and enhance the sealing effect.

[0056] More preferably, the difference between d3 and d2 is greater than or equal to 0.5mm, so as to sufficiently ensure the sealing and fixing effect, and further, the difference can be 0.5mm, also can be 0.6mm, 0.7mm, 0.8mm, 0.9mm, etc., and the specific value can be selected according to the need, which is not limited here.

[0057] In an embodiment, the frame 1 and the cover plate 2 are integrally formed, as shown in Figures 2 to 4 .

[0058] Preferably, the frame 1 and the cover plate 2 are integrally injection molded, so as to not only simplify the process, but also improve the sealing effect of the structure and prevent gas from passing through.

[0059] It should be noted that: in other embodiments, the frame 1 and the cover plate 2 can also be fixedly connected by using other processes, and the user can select and set according to the need, which is not limited here.

[0060] In an embodiment, the frame 1 is a transparent silica gel frame, and the hardness y of the frame 1 satisfies 40A≤y≤70A.

[0061] Preferably, the frame body 1 is made of silica gel material, which not only greatly reduces the cost, but also has better elasticity to facilitate the fitting on the interface 101, enhances the sealing effect on the interface 101, and more effectively prevents oxygen leakage to ensure the safety of product use. At the same time, silica gel can reduce skin allergy and is more convenient to clean and repeatedly disinfect, facilitating daily use.

[0062] More preferably, the frame body is made of silica gel material with a Shore hardness of 40A to 70A, and the hardness can be any value between 40A and 70A, such as 40A, 45A, 50A, 55A, 60A, 65A, 70A, etc., so that the sealing effect, fixing effect, and convenience of installation and removal are more ideal.

[0063] Further preferably, the frame body 1 is made of transparent silica gel material, so that the internal environment can be easily observed, and more actual conditions can be observed during the operation, which is conducive to the smooth progress of the hard bronchus operation.

[0064] It should be noted that the material of the cover plate 2 can be selected according to the above-mentioned material selection of the frame body 1, which will not be repeated here.

[0065] In one embodiment, the thickness h1 of the convex ring 11 satisfies 1mm≤h1≤5mm, and the width h2 of the convex portion 105 satisfies h2≤h1, as shown in Figure 4 and Figure 7 .

[0066] Preferably, the thickness h1 of the convex ring 11 satisfies 1mm≤h1≤5mm, which can be any value between 1mm and 5mm, such as 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, etc., which can be selected and set by the user as needed, without specific limitation here.

[0067] It should be noted that the above-mentioned limitation of the wall thickness h1 is to reserve more space for the convex portion 105 on the interface 101, so that the area of the convex portion 105 in contact with the end face of the convex ring 11 is guaranteed to meet the connection strength, and the connection stability of the sealing cover and the interface 101 is more ideal; further, the above-mentioned h1 is half of the difference between the outer peripheral diameter d1 of the convex ring 11 and the inner peripheral diameter d2, as shown in Figure 4 .

[0068] More preferably, the width h2 of the protrusion 105 satisfies h2≤h1, so that the protrusion 105 is accommodated in the space between the convex ring 11 and the cover plate 2, and the protrusion 105 stably abuts against the end face 111 of the convex ring 11, thereby enhancing the stability of the connection of the sealing cover and the interface 101.

[0069] It should be noted that the above-mentioned limitation of h1 and h2 not only reserves sufficient space for the protrusion 105, but also facilitates the abutment of the protrusion 105 against the end face 111 of the convex ring 11, thereby ensuring the strength and sealing effect of the connection of the sealing cover and the interface 101.

[0070] In an embodiment, the outer peripheral surface of the frame 1 is provided with an outer edge 3, and the frame 1 is fixedly connected with the outer edge 3, as shown in Figure 8 and Figure 9 .

[0071] Preferably, the outer edge 3 is arranged on the outer peripheral surface of the frame 1 and is fixedly connected with the frame 1, such as being integrally formed, thereby facilitating the installation and dismounting of the frame 1 on the interface 101 through the outer edge 3, and improving the convenience of use.

[0072] More preferably, the outer edge 3 is arranged around the frame 1 along the circumferential direction of the frame 1, thereby facilitating the operation of the user and achieving more convenient installation and dismounting of the sealing cover on the interface 101. Further, the end face of the outer edge 3 in the axial direction is coplanar with the end face of the frame 1, thereby facilitating the processing and manufacturing and use.

[0073] In an embodiment, the cover plate 2 is provided with at least one through hole 21, and the sealing cover further comprises a connecting piece 4 and at least one plug block 5 for plugging the through hole 21, one end of the connecting piece 4 is fixedly connected with the frame 1, and the other end of the connecting piece 4 is fixedly connected with the plug block 5, as shown in Figures 10 to 12 .

[0074] Preferably, the through hole 21 penetrates the inner and outer surfaces of the cover plate 2, thereby realizing the communication of the inner and outer spaces of the frame 1, facilitating the passing of instruments such as endoscopes during the operation process, and ensuring the sealing between the cover plate 2 and the instruments; further, the through hole 21 can be provided with one, two or more, and the specific number of the through hole 21 can be set as needed, which is not limited here.

[0075] More preferably, the through hole 21 can be circular, triangular or polygonal, and the specific shape of the through hole 21 can be set as needed, which is not limited here.

[0076] It should be noted that the through hole 21 can also be a cross cut or a cross shape, so as to not only facilitate the passing of the instrument, but also quickly and comprehensively cover the gap between the through hole 21 and the instrument or the through hole 21 during or after the instrument is pulled out, so as to enhance the sealing effect.

[0077] Further preferably, the plug block 5 is used to plug the through hole 21, the plug block 5 can be inserted into the through hole 21 or pulled out of the through hole 21, when the endoscope or the like instrument needs to pass through the through hole 21 and extend into the rigid bronchoscope 10, the plug block 5 can pass through the through hole 21, so as to achieve the plugging and sealing of the through hole 21; when the endoscope or the like instrument needs to pass through the through hole 21 and extend into the rigid bronchoscope 10, the plug block 5 can be pulled out to facilitate the passing of the instrument; the plug block 5 can be provided one, two or more, and the number of the plug block 5 is the same as and corresponds to the number of the through hole 21.

[0078] Further preferably, when the plug block 5 passes through the through hole 21, the outer circumferential surface of the plug block 5 is tightly attached to the inner circumferential surface of the through hole 21, so as to ensure the sealing effect and prevent gas from passing through the through hole 21.

[0079] Further, one end of the connecting piece 4 is fixedly connected with the frame body 1, and the other end is fixedly connected with the plug block 5, so as to realize the fixed connection of the plug block 5 and the frame body 1, prevent the plug block 5 from falling on the ground when not in use and being picked up by the nurse, waste the operation time and affect the operation efficiency, and also avoid being contaminated to affect the subsequent use, ensure the cleanliness of the plug block 5, and prolong the service life; the connecting piece 4 can be provided one and fixedly connected with one or more plug blocks 5, and in other embodiments, the connecting piece 4 can be provided multiple and fixedly connected with each of the plug blocks 5, so as to realize the fixed connection of the plug block 5 and the frame body 1, and the specific number of the connecting piece 4 can be set by the person skilled in the art according to the needs, which is not limited here.

[0080] Further, the frame body 1, the connecting piece 4 and the plug block 5 are integrally formed, so as to not only simplify the process, but also improve the structural stability.

[0081] It should be noted that since the cover plate 2 is made of silica gel, the silica gel has good elasticity, so that the through hole 21 can pass through the instrument with a larger caliber than other instruments, and since the silica gel has good stretchability, the instrument can have certain anchoring force after passing through the through hole 21, so as to avoid the shaking of the instrument affecting the quality and safety of the operation.

[0082] In one embodiment, the diameter d4 of the through hole 21 satisfies 4mm≤d4≤5mm, and the wall thickness h3 of the cover plate satisfies 0.6mm≤h3≤1mm, as shown in Figure 11 and Figure 12 .

[0083] Preferably, the diameter d4 of the through hole 21 satisfies 4mm≤d4≤5mm, which can be any value between 4mm and 5mm, such as 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5mm, etc., and the specific value can be set as needed, which is not specifically limited here.

[0084] More preferably, the through hole 21 is preferably 4.5mm, so that it can be suitable for instruments such as endoscopes to pass through, expanding its range of use, and preventing damage due to the diameter of the through hole 21 being too small, while preventing the diameter of the through hole 21 from being too large to affect the sealing effect.

[0085] Further preferably, the wall thickness h3 of the cover plate 2 satisfies 0.6mm≤h3≤1mm, which can be any value between 0.6mm and 1mm, such as 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc., and the specific value can be set as needed, which is not specifically limited here.

[0086] Further preferably, the wall thickness h3 of the cover plate 2 is preferably 0.8mm, so as to ensure good flexibility of the cover plate 2, so that it can deform under the action of the traction force, preventing the transmission of the traction force to the first part 11 to affect the stability of the sealing cover and the interface connection.

[0087] It should be noted that: since the cover plate 2 is thin and uniform and symmetrical, the instrument can pass through the through hole 21 conveniently, quickly and easily, and even helps the doctor to blindly insert the instrument into the through hole 21, which is beneficial to save the doctor's operation time, improve the operation efficiency, and reduce the patient's pain.

[0088] In one embodiment, the plug 5 includes a tapered head 51 for passing through the through hole 21, a fixed part 53 connected with the connecting piece 4, and a connecting part 52 fixed between the tapered head 51 and the fixed part 53, and the diameter d6 of the connecting part 52 is smaller than the maximum diameter d5 of the tapered head 51, as shown in Figure 12 .

[0089] Preferably, the tapered head 51 is in the shape of a cone, and the tapered head 51 is designed in the shape of a cone, so as to facilitate insertion into the through hole 21 and improve the convenience of operation, and in other embodiments, the tapered head 51 can also be in the shape of other geometric bodies, and the specific shape can be set as needed, which is not specifically limited here.

[0090] More preferably, the fixed part 53 is fixedly connected with the connecting piece 4, for example, the fixed part 53 is fixedly connected with the connecting piece 4 away from the frame 1, so as to realize the fixed connection of the plug block 5 and the connecting piece 4, and prevent the plug block 5 from falling on the ground or the table top when not in use.

[0091] Further preferably, the connecting part 52 is arranged between the taper head 51 and the fixed part 53, one end of the connecting part 52 is fixedly connected with the taper head 51, and the other end is fixedly connected with the fixed part 53, so as to realize the fixed connection of the taper head 51 and the fixed part 53. In other embodiments, the fixed part 53, the connecting part 52 and the taper head 51 are integrally formed, so as to simplify the process and improve the stability of the structure.

[0092] Further preferably, the diameter d6 of the connecting part 52 is smaller than the maximum diameter d5 of the taper head 51, and a stepped shape is formed between the outer peripheral surface of the connecting part 52 and the outer peripheral surface of the taper head 51, so that when the plug block 5 is inserted into the through hole 21, the connecting part 52 is in the through hole 21, and the part with the largest diameter of the taper head 51 is clamped at the edge of the through hole 21, preventing the plug block 5 from being easily pulled out of the through hole 21, and improving the stability of the structure.

[0093] In an embodiment, the diameter d6 of the connecting part 52 is greater than the diameter d4 of the through hole 21, as shown in Figure 11 and Figure 12 .

[0094] Preferably, the diameter d6 of the connecting part 52 is greater than the diameter d4 of the through hole 21, so that when the plug block 5 is inserted into the through hole 21, the connecting part 52 is in interference fit with the through hole 21, and the outer peripheral surface of the connecting part 52 is attached to the inner peripheral surface of the through hole 21, not only effectively enhancing the sealing effect, but also preventing it from being easily pulled out of the through hole 21, and improving the stability of the structure.

[0095] In an embodiment, the interface 101' includes an interface body 6, a fixed frame 7 fixed to the outer peripheral surface of the interface body 6, and the inner peripheral surface of the convex ring 11 abuts against the outer peripheral surface of the fixed frame 7, and the convex part 105 is arranged on the outer peripheral surface of the fixed frame 7, as shown in Figure 13 and Figure 14 .

[0096] Preferably, the interface can include various embodiments, which not only include the above-mentioned embodiment of the interface 101 as a single piece, but also include the embodiment of the interface 101' as a composite piece in the present embodiment. In the present embodiment, the interface body 6 is a common hard bronchial interface on the market, which belongs to the prior art and will not be described here.

[0097] More preferably, the shape of the fixed frame 7 can be a cylinder, or other geometric body, etc., which can be selected by the user as needed, and is not specifically limited herein, as long as the inner circumferential surface of the fixed frame 7 is tightly fitted with the outer circumferential surface of the interface body 6, thereby enhancing the sealing and fixing effect between the fixed frame 7 and the interface body 6.

[0098] Further preferably, the fixed frame 7 can be made of plastic material, or other materials, etc., which can be selected by the user as needed, as long as it can be stably connected with the interface body 6, and is not specifically limited herein.

[0099] Further preferably, the inner circumferential surface of the convex ring 11 abuts against the outer circumferential surface of the fixed frame 7, thereby achieving effective sealing and fixing effect.

[0100] Further, the protruding portion 105 is arranged on the outer circumferential surface of the fixed frame 7 and abuts against the end surface of the convex ring 11 opposite to the cover plate 2, thereby achieving stable connection of the sealing cover with the interface and preventing the sealing cover from falling off the interface 101'.

[0101] It should be noted that: it is the friction between the inner circumferential surface of the convex ring 11 and the outer circumferential surface of the fixed frame 7, and the abutment of the protruding portion 105 against the end surface of the convex ring 11, that achieves stable connection of the sealing cover with the interface 101', prevents the sealing cover from falling off the interface 101', and ensures the sealing effect; at the same time, the arrangement of the convex ring 11 increases the thickness of the frame body 1, so that it can be firmly fixed on the fixed frame 7, while the thickness of the cover plate 2 and the part of the frame body 1 close to the cover plate 2 is relatively thin, so that the cover plate 2 and the part of the frame body 1 close to the cover plate 2 can be stretched and deformed when subjected to the outward pulling force, thereby preventing the pulling force from being transmitted to the convex ring 11, effectively preventing the sealing cover from falling off, and achieving better stability.

[0102] Further, the diameter d7 of the outer circumferential surface of the fixed frame 7 is greater than the diameter d2 of the inner circumferential surface of the convex ring 11, thereby achieving interference fit between the fixed frame 7 and the convex ring 11, which not only enhances the sealing effect between the two, but also enhances the structural stability, further preventing the sealing cover from falling off.

[0103] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sealing cap for sealing an interface of a proximal end of a bronchoscope (10), characterized in that, The sealing cover comprises a frame (1) sleeved on the interface, a cover plate (2) closing an axial end of the frame (1), an inner surface of the frame (1) is provided with a convex ring (11), an inner circumferential surface of the convex ring (11) abuts against an outer circumferential surface of the interface, and a convex part (105) of the interface abuts against an end surface (111) of the convex ring (11) opposite to the cover plate (2).

2. The closure of claim 1, wherein A diameter d2 of the inner circumferential surface of the convex ring (11) is less than a diameter d3 of the outer circumferential surface of the interface, and d3-d2≥0.5mm.

3. The closure of claim 1, wherein The frame (1) and the cover plate (2) are integrally formed.

4. The closure of claim 1, wherein The frame (1) is a transparent silica gel frame, and a hardness y of the frame (1) satisfies 40A≤y≤70A.

5. The closure of claim 1, wherein A thickness h1 of the convex ring (11) satisfies 1mm≤h1≤5mm, and a width h2 of the convex part (105) satisfies h2≤h1.

6. The closure of claim 1, wherein The cover plate (2) is provided with at least one through hole (21), and the sealing cover further comprises a connecting piece (4) and at least one blocking block (5) for blocking the through hole (21), one end of the connecting piece (4) is fixedly connected with the frame (1), and the other end of the connecting piece (4) is fixedly connected with the blocking block (5).

7. The closure of claim 6, wherein The blocking block (5) comprises a tapered head (51) for penetrating through the through hole (21), a fixed part (53) connected with the connecting piece (4), and a connecting part (52) fixed between the tapered head (51) and the fixed part (53), a diameter (d6) of the connecting part (52) is less than a maximum diameter (d5) of the tapered head (51).

8. The closure of claim 7, wherein The diameter (d6) of the connecting part (52) is greater than a diameter (d4) of the through hole (21).

9. The closure of claim 8, wherein The diameter d4 of the through hole (21) satisfies 4mm≤d4≤5mm, and / or a wall thickness h3 of the cover plate (2) satisfies 0.6mm≤h3≤1mm.

10. The closure of claim 1, wherein The interface (101') comprises an interface body (6) and a fixed frame (7) fixed on an outer circumferential surface of the interface body (6), the inner circumferential surface of the convex ring (11) abuts against an outer circumferential surface of the fixed frame (7), and the convex part (105) is arranged on the outer circumferential surface of the fixed frame (7).

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