Extrusion structure and bronchoscope equipment

Abstract

The utility model discloses an extrusion structure and bronchoscope equipment, and relates to the technical field of medical equipment, the extrusion structure comprises a pumping assembly which is detachably connected with a bronchoscope main body and is provided with a second liquid inlet, a liquid outlet and a liquid storage cavity, the second liquid inlet is used for allowing liquid in a liquid storage tank to enter the liquid storage cavity, and the liquid outlet is used for allowing liquid in the liquid storage tank to enter the liquid storage cavity; the liquid outlet is used for discharging the liquid in the liquid storage cavity, the pumping assembly is provided with a switch part, and the pumping assembly can suck the liquid in the liquid storage tank into the liquid storage cavity and discharge the liquid in the liquid storage cavity through the liquid outlet by operating the switch part; one end of the first flow guide pipe is connected with the liquid outlet, the other end of the first flow guide pipe is detachably connected with the first liquid inlet, and the first flow guide pipe is used for guiding liquid discharged from the liquid outlet into the first liquid inlet. According to the technical scheme provided by the utility model, the problem that the existing bronchoscope is difficult to examine and operate due to lack of hands when normal saline is extracted can be solved.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to an extrusion structure and a bronchoscope device. Background Technology

[0002] Bronchoscopy is an important diagnostic and treatment method for respiratory diseases. It involves inserting a thin tube (i.e., a bronchoscope) with a light source and camera into the patient's airway so that doctors can directly observe the condition of the trachea, bronchi, and even the lungs.

[0003] Current bronchoscopy procedures typically require the cooperation of at least two staff members during the preparation phase. One doctor holds the bronchoscope in preparation for insertion, while another assistant draws saline solution for the operating doctor. However, in certain emergency situations, such as ambulance emergency care or rapid response in the emergency room, there may only be two medical personnel on site. In such cases, the lack of additional manpower can make the procedure more difficult and increase the pressure on the team. Utility Model Content

[0004] The main purpose of this invention is to propose an extrusion structure and a bronchoscope device, which aims to solve the problem of difficulty in bronchoscope examination due to lack of manpower when performing saline extraction with existing bronchoscopes.

[0005] To achieve the above objectives, the extrusion structure proposed in this utility model is applied to a bronchoscope device, which includes a bronchoscope body and a liquid storage tank, wherein the bronchoscope body has a first liquid inlet; the extrusion structure includes:

[0006] A pumping assembly, detachably connected to the bronchoscope body, has a second inlet, an outlet, and a storage chamber. The pumping assembly includes an operating section. The second inlet allows liquid from the storage tank to enter the storage chamber, and the outlet allows liquid to exit the storage chamber. Operating the switch allows the pumping assembly to draw liquid from the storage tank into the storage chamber and simultaneously discharge liquid from the storage chamber through the outlet.

[0007] The first guide tube has one end connected to the liquid outlet and the other end detachably connected to the first liquid inlet, for guiding the liquid discharged from the liquid outlet into the first liquid inlet.

[0008] In one embodiment, the first guide tube is detachably connected to the liquid outlet;

[0009] And / or, the first guide tube can be inserted into the first inlet, and the first guide tube is connected to the first inlet.

[0010] In one embodiment, the extrusion structure further includes a second guide tube, one end of which is connected to the second liquid inlet, and the other end is used for connection to the liquid storage tank.

[0011] In one embodiment, the second guide tube is detachably connected to the second liquid inlet.

[0012] In one embodiment, the pumping assembly includes a pump body, a pump head, a pump piston, a spring, a first check valve, and a second check valve. The switching part is configured as a pump head. The pump body has a pump chamber. One end of the pump piston is located in the pump chamber, and the other end is located outside the pump body and connected to the pump head. One end of the spring is connected to the pump body, and the other end is connected to the pump piston or the pump head. The spring is used to cause the pump head and the pump piston to rebound.

[0013] The second liquid inlet is provided in the pump body, the liquid outlet is provided in the pump head, the liquid storage chamber is provided in the pump chamber, a first flow channel is provided between the second liquid inlet and the liquid storage chamber, the first one-way valve is located in the liquid storage chamber and is provided close to the first flow channel, a second flow channel is provided between the liquid storage chamber and the liquid outlet, and the second one-way valve is provided in the second flow channel;

[0014] Pressing the pump head closes the first one-way valve and opens the second one-way valve, while simultaneously deforming the spring; releasing the pump head causes the spring to rebound, opening the first one-way valve and closing the second one-way valve.

[0015] In one embodiment, the first one-way valve includes a first limiting seat, a first ball, and a first valve seat fixed in the liquid storage chamber, wherein the first ball is disposed between the first limiting seat and the first valve seat;

[0016] And / or, the second check valve includes a second limiting seat, a second ball, and a second valve seat disposed in the second flow channel, wherein the second ball is disposed between the second limiting seat and the second valve seat.

[0017] In one embodiment, the spring is disposed in the liquid storage chamber, with one end of the spring connected to the bottom of the liquid storage chamber and the other end connected to the pump piston;

[0018] And / or, the second flow channel is divided into two sections, one of which is located at the pump piston and the other at the pump head.

[0019] In one embodiment, the extrusion structure further includes a connector fixed to the pumping assembly, the pumping assembly being detachably connected to the bronchoscope body via the connector.

[0020] In one embodiment, the connector is configured as a resilient clamping arm, through which the pumping assembly can hold the bronchoscope body.

[0021] This utility model also proposes a bronchoscopy device, including a bronchoscope body and an extrusion structure, wherein the extrusion structure is as described above.

[0022] The technical solution of this utility model adopts a pumping component that is detachably connected to the bronchoscope body. The pumping component and the bronchoscope can be carried separately. When in use, the pumping component can be installed on the bronchoscope body; when not in use, it can be detached. Furthermore, the pumping component is equipped with a switch. When operating the bronchoscope body, the doctor can simultaneously operate the switch on the pumping component. Specifically, when bronchoscopy is required, the medical staff can hold the bronchoscope handle with one hand and operate the switch with their index finger. The switch causes the pumping component to draw saline solution from the reservoir into the reservoir chamber and simultaneously discharge the saline solution from the reservoir chamber through the outlet. In other words, in this state, the doctor can independently perform saline extraction during bronchoscopy without the need for additional assistance, thus solving the problem of difficulty in performing bronchoscopy due to a lack of manpower when extracting saline solution. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of a structure of an embodiment of the bronchoscopy device provided by this utility model;

[0025] Figure 2 for Figure 1 Enlarged view of the extrusion structure in a bronchoscopy device;

[0026] Figure 3 for Figure 2 Internal schematic diagram of the extrusion structure;

[0027] Figure 4 This is a schematic diagram of an embodiment of the extrusion structure check valve provided by this utility model.

[0028] Explanation of icon numbers:

[0029] 100. Pumping assembly; 110. Second inlet; 120. Outlet; 130. Storage chamber; 140. Pump piston; 150. Pump body; 151. Pump chamber; 152. Pump body; 153. Pump cover; 160. Pump head; 170. Spring; 180. First check valve; 181. First limit seat; 182. First ball; 183. First valve seat; 184. First push spring; 190. Second check valve; 191. Second limit seat; 192. Second ball; 193. Second valve seat; 194. Second push spring; 110a. First flow channel; 120a. Second flow channel;

[0030] 200. First guide tube;

[0031] 300. Second guide tube;

[0032] 400. Bronchoscope body; 410. First liquid inlet;

[0033] 500. Storage tank;

[0034] 600. Connectors.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] This invention proposes an extrusion structure for use in a bronchoscopy device. The bronchoscopy device includes a bronchoscope body with a first liquid inlet. The bronchoscope body is sometimes referred to as an endoscope body. Furthermore, the bronchoscopy device also includes an image processing system, a monitor, a light source device, a liquid reservoir, and other structures necessary for performing bronchoscopic examinations. The liquid reservoir contains physiological saline and can be suspended in a designated position or placed directly in a designated position.

[0040] Please see Figure 1In one embodiment of this utility model, the extrusion structure includes: a pumping assembly 100 and a first guide tube 200; wherein the pumping assembly 100 is detachably connected to the bronchoscope body 400, that is, the pumping assembly 100 is detachably connected to the bronchoscope body 400, and the bronchoscope body 400 and the pumping assembly 100 can be carried separately. The pumping assembly 100 has a second inlet 110, an outlet 120, and a storage chamber 130. The second inlet 110 is used to supply liquid (physiological saline) from the storage tank 500. The liquid is introduced into the storage chamber 130, and the liquid outlet 120 is used to discharge the liquid in the storage chamber 130. Operating the switch unit enables the pumping assembly 100 to draw the liquid in the storage tank 500 into the storage chamber 130, and at the same time discharge the liquid in the storage chamber 130 through the liquid outlet 120. The first guide pipe 200 is connected at one end to the liquid outlet 120 and detachably connected at the other end to the first liquid inlet 410, so as to guide the liquid discharged from the liquid outlet 120 into the first liquid inlet 410. Understandably, by detachably connecting the pump assembly 100 to the bronchoscope body 400, the pump assembly 100 and the bronchoscope can be carried separately. When in use, the pump assembly 100 can be installed on the bronchoscope body 400; when not in use, the pump assembly 100 can be removed from the bronchoscope body 400. Furthermore, the pump assembly 100 is also equipped with a switch, allowing the doctor to simultaneously operate the switch on the pump assembly 100 while operating the bronchoscope body 400. Specifically, this is done when a bronchoscope operation is required. In this configuration, medical staff can hold the bronchoscope handle with one hand and operate the switch with their index finger. The switch causes the pumping assembly 100 to draw saline solution from the reservoir 500 into the reservoir chamber 130, and simultaneously discharge the saline solution from the reservoir chamber 130 through the outlet 120. This means that in this state, the doctor can independently perform saline extraction during bronchoscopy without the need for additional assistance, solving the problem of difficulty in saline extraction due to lack of manpower in existing bronchoscopy procedures. Furthermore, in some embodiments, the pumping assembly 100 can be a miniature pump, which may be a gear pump. The switch can be a pump switch mounted on the miniature pump; specifically, the pump switch can be an electrical switch. When the miniature pump is a gear pump, it has a second inlet 110, an outlet 120, and a reservoir chamber 130.

[0041] In this embodiment, a first guide tube 200 is also provided, and the first guide tube 200 is detachably connected to the first inlet 410. That is, when using the extrusion structure in this embodiment, after the pumping assembly 100 is installed on the bronchoscope body 400, the first guide tube 200 is inserted into the first inlet 410 on the bronchoscope body 400. At this time, physiological saline is delivered into the first inlet 410 of the bronchoscope through the first guide tube 200 via the pumping assembly 100, thereby entering the body of the person being tested. It should be noted that lubricant needs to be applied to the front end of the bronchoscope body 400 during use. The purpose of applying lubricant is to ensure smooth and unobstructed insertion of the bronchoscope body 400, reducing irritation and discomfort to the person being tested.

[0042] In one embodiment, the first guide tube 200 is detachably connected to the outlet 120, so that the first guide tube 200 and the pumping assembly 100 can be carried separately and assembled during use. In some embodiments, the first guide tube 200 can be fixedly connected to the outlet 120.

[0043] In one embodiment, the connection between the first guide tube 200 and the first inlet 410 can be achieved by inserting the first guide tube 200 into the first inlet 410, thus ensuring that the saline solution in the first guide tube 200 can better enter the first inlet 410. However, this design is not limited to this. In some embodiments, the first guide tube 200 can be detachably connected to the first inlet 410 by sleeved on the outside of the first inlet 410.

[0044] In one embodiment, reference Figure 1 , Figure 2 The extrusion structure further includes a second guide pipe 300. One end of the second guide pipe 300 is connected to the second inlet 110, and the other end is used to connect to the storage tank 500. Thus, the saline solution in the storage tank 500 can enter the pumping assembly 100 through the second guide pipe 300. Furthermore, by appropriately extending the length of the second guide pipe 300, more options are available for the placement of the storage tank 500. However, this design is not limited to this. In some embodiments, the outlet 120 of the storage tank 500 can be directly connected to the second inlet 110, or the storage tank 500 may contain a second guide pipe 300.

[0045] In one embodiment, the second guide pipe 300 is detachably connected to the second liquid inlet 110. In some embodiments, the second guide pipe 300 can be detachably connected to the second liquid inlet 110 and also detachably connected to the liquid storage tank 500, thus facilitating the separate carrying of the second guide pipe 300, the pumping assembly 100, and the liquid storage tank 500.

[0046] In some embodiments, the first drainage tube 200 and the second drainage tube 300 may be made of medical rubber or silicone, with the aim of enabling the first drainage tube 200 and the second drainage tube 300 to have good flexibility and biocompatibility.

[0047] In one embodiment, reference Figure 3 The pumping assembly 100 includes a pump body 150, a pump head 160, a pump piston 140, a spring 170, a first check valve 180, and a second check valve 190. The switching part is configured as the pump head 160. The pump body 150 has a pump chamber 151. One end of the pump piston 140 is located in the pump chamber 151, and the other end is located outside the pump body 150 and connected to the pump head 160. One end of the spring 170 is connected to the pump body 150, and the other end is connected to the pump piston 140. The spring 170 is used to connect the pump head 160 and the pump piston 140. Rebound; specifically, when one end of the spring 170 is connected to the pump body 150 and the other end is connected to the piston pump, the following structure can be adopted: the spring 170 is disposed in the liquid storage chamber 130, one end of the spring 170 is connected to the bottom of the liquid storage chamber 130, and the other end is connected to the pump piston 140. When the pump head 160 is pressed, the pump head 160 can drive the pump piston 140 to move, thereby the pump piston 140 can compress the spring 170, causing the spring 170 to deform. When the pump head 160 is released, the spring 170 returns to its original deformation, which can drive the pump piston 140 to return to its original position. Further, in one embodiment, the pump body 150 includes a pump body 152 and a pump cover 153, and a pump chamber 151 is disposed in the pump body 152. The pump body 152 and the pump cover 153 are detachably connected, and the pump piston 140 passes through the pump cover 153 and is located outside the pump body 150. It can be understood that the pump piston 140 and the pump cover 153 are sealed. Specifically, when installing the spring 170, the pump cover 153 is opened, and then the spring 170 is installed into the pump chamber 151. Next, the pump piston 140 is installed into the pump chamber 151 and abuts against one end of the spring 170. Then, the pump cover 153 is connected to the pump body 150.

[0048] In some embodiments (not shown), one end of the spring 170 is connected to the pump body 150 and the other end is connected to the pump head 160. At this time, the spring 170 is located outside the pump body 150. One end of the spring 170 is connected to the outside of the pump body 150 and the other end is connected to the pump head 160. At the same time, the spring 170 can also be sleeved on the outside of the piston pump, specifically on the section of the piston pump located outside the pump body 150.

[0049] Further, the second inlet 110 is provided in the pump body 150, the outlet 120 is provided in the pump head 160, the storage chamber 130 is provided in the pump chamber 151, a first flow channel 110a is provided between the second inlet 110 and the storage chamber 130, and the first one-way valve 180 is located in the storage chamber 130 and is provided close to the first flow channel 110a. In some embodiments, the first one-way valve 180 may be provided in the first flow channel 110a, and a second flow channel 120a is provided between the storage chamber 130 and the outlet 120. The second one-way valve 190 is provided in the second flow channel 120a. The second flow channel 120a may have the following structure: the second flow channel 120a is divided into two sections, one section is provided in the pump piston 140, and the other section is provided in the pump head 160. In some embodiments, the outlet 120 can be provided on the pump piston 140. Specifically, the outlet 120 is provided on a section of the pump piston 140 located outside the pump body 150, and in this case, the second flow channel 120a is only provided on the pump piston 140.

[0050] Pressing the pump head 160 closes the first one-way valve 180, preventing the saline solution in the reservoir 130 from passing through it. Simultaneously, the second one-way valve 190 opens, allowing the liquid in the reservoir 130 to flow towards the outlet 120. In this state, the spring 170 deforms. Releasing the pump head 160 causes the spring 170 to rebound, opening the first one-way valve 180 and allowing the saline solution in the reservoir 500 to enter the reservoir 130 through the second inlet 110. The second one-way valve 190 then closes, preventing the saline solution in the reservoir 130 from passing through it.

[0051] In one embodiment, reference Figure 3The first one-way valve 180 and the second one-way valve 190 can adopt the following structure. The first one-way valve 180 includes a first limiting seat 181, a first ball 182, and a first valve seat 183 fixed in the liquid storage chamber 130. The first ball 182 is disposed between the first limiting seat 181 and the first valve seat 183. The first limiting seat 181 is configured as a frustum structure. At this time, the circumferential side of the first limiting seat 181 is a hollow structure, which allows physiological saline to pass through easily. Meanwhile, the first valve seat 183 is disposed close to the first flow channel. The first valve seat 183 is provided with an outlet communicating with the first flow channel. When the first ball 182 abuts against the outlet, it can block the flow of physiological saline between the first flow channel and the liquid storage chamber 130. In one embodiment, the second one-way valve 190 includes a second limiting seat 191, a second ball 192, and a second valve seat 193 disposed in the second flow channel. The second ball 192 is disposed between the second limiting seat 191 and the second valve seat 193. When the second flow channel is divided into two sections, the second valve seat 193 is disposed on the piston pump, specifically at the end where the piston pump is connected to the pump head 160. The end where the piston pump is connected to the pump head 160 forms the second valve seat 193. The second limiting seat 191 is disposed in the pump head 160. After the pump head 160 is connected to the piston pump, there is a certain gap between the second valve seat 193 and the second limiting seat 191, and the second ball 192 is located in this gap.

[0052] Furthermore, when the first one-way valve 180 and the second one-way valve 190 adopt the above structure, the movement direction of the first ball 182 and the second ball 192 is perpendicular to the ground plane. That is, when the pump head 160 is not pressed, the first ball 182 and the second ball 192 are respectively located on the first valve seat 183 and the second valve seat 193 under the action of gravity. When the pump head 160 is pressed, the saline in the reservoir 130 will diffuse towards the two one-way valves. When it diffuses towards the first one-way valve 180, it will cause the first ball 182 to press against the first valve seat 183. At this time, the saline cannot pass through the first one-way valve 180. When it diffuses towards the second one-way valve 190, it can push the second ball 192 on the second valve seat 193 away. At this time, the saline can pass through the second valve seat 193 and then through the second one-way valve 190. At the same time, the second ball 192 can be prevented from flowing out of the second flow channel with the saline under the restriction of the second limiting seat 191. When the pump head 160 is released, the pump head 160 and the piston pump return to their original positions under the action of the spring 170. At this time, the second ball 192 can fall onto the second valve seat 193 under the action of gravity. At the same time, when the piston pump returns to its original position, it can create a certain suction force in the liquid storage chamber 130. This suction force can cause the first ball 182 to leave the first valve seat 183. At this time, the physiological saline in the liquid storage tank 500 can enter the liquid storage chamber 130 through the second inlet 110.

[0053] In some embodiments, reference Figure 4 To improve the performance of the check valves, both the first check valve 180 and the second check valve 190 are equipped with push springs, namely the first push spring 184 and the second push spring 194. These push springs allow the ball to rest against the valve seat. The ball's direction of movement does not need to be perpendicular to the ground plane; the push springs ensure the ball remains against the valve seat. One end of the push spring is connected to a limit seat, and the other end is connected to the valve seat. It should be noted that when the check valve has push springs, the force generated when pressing the pump head 160 can overcome the spring force of the push spring on the second check valve 190. When the pump head 160 is released, the suction force generated in the reservoir 130 can overcome the push spring of the first check valve 180. In some embodiments, the one-way valve may also adopt other structures, as long as the pumping assembly 100 can satisfy the following: pressing the pump head 160 allows the saline in the reservoir 130 to be discharged through the outlet 120, and releasing the pump head 160 allows the saline to enter the reservoir 130 through the second inlet 110.

[0054] Furthermore, in some embodiments, when the pumping assembly 100 adopts the above-described structure, when bronchoscopy is required, medical personnel can hold the bronchoscope body with one hand and press the pump head 160 above the portable liquid container with their index finger. When pressed, the internal liquid piston is pushed, and through the action of the first one-way valve 180, the second one-way valve 190, and the spring 170, physiological saline is squeezed out from the outlet 120.

[0055] In one embodiment, reference Figure 1 , Figure 2 The extrusion structure further includes a connector 600 fixed to the pumping assembly 100. The pumping assembly 100 is detachably connected to the bronchoscope body 400 via the connector. It can be understood that the pumping assembly 100 is detachably connected to the bronchoscope body 400 indirectly via the connector 600. In some embodiments (not shown), unlike the indirect connection between the pumping assembly and the bronchoscope body via the connector described above, the pumping assembly can be directly connected to the bronchoscope body. That is, the pump body in the pumping assembly is provided with a pin, and the bronchoscope body is provided with a slot. The pumping assembly and the bronchoscope body are connected via the pin and the slot, enabling a direct connection between the pumping assembly and the bronchoscope body.

[0056] In one embodiment, reference Figure 1 , Figure 2The connector 600 is configured as an elastic clamping arm, and the pumping assembly 100 can clamp the bronchoscope body 400 through the elastic clamping arm. It can be understood that when the connector is configured as an elastic clamping arm, the elastic clamping arm is fixed to the pump body 150 in the pumping assembly 100. In this case, during installation, the pumping assembly 100 can connect the pump body 150 to the bronchoscope body 400 through elastic clamping. Furthermore, to increase the friction between the elastic clamping arm and the bronchoscope body 400, a rubber layer or other structural layer that can improve friction can be provided on the surface of the elastic clamping arm that contacts the bronchoscope body 400. In some embodiments, the connector can also be configured as a Velcro wrapping tape (not shown), wherein the Velcro wrapping tape includes two sections, each connected to the pump body 150. One section of the Velcro has a rounded portion, and the other section has a hooked portion. In this case, when the pump body 150 is detachably connected to the bronchoscope body 400, the two sections of Velcro can be wrapped around the bronchoscope body 400, and then the hooked portion and the rounded portion can be connected together, thereby connecting the pump body 150 to the bronchoscope body 400 via the Velcro wrapping tape. Furthermore, in this embodiment, whether using an elastic clamp or a Velcro wrapping tape, the pump body 150 can be connected to bronchoscope bodies 400 of various sizes, effectively improving the applicability of the extrusion structure of this application.

[0057] This utility model also proposes a bronchoscopy device, see reference. Figure 1 The bronchoscopy device includes a bronchoscope body 400 and an extrusion structure. The specific structure of the extrusion structure is as described in the above embodiments. Since this bronchoscopy device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The bronchoscopy device also includes an image processing system (not shown), a monitor (not shown), a light source device (not shown), a liquid storage tank 500, and other structures necessary to complete bronchoscopic examinations.

[0058] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An extrusion structure, characterized in that, Applied to a bronchoscopy device, the bronchoscopy device includes a bronchoscopy body and a liquid storage tank, the bronchoscopy body having a first liquid inlet; the extrusion structure includes: A pumping assembly, detachably connected to the bronchoscope body, has a second inlet, an outlet, and a storage chamber. The second inlet allows liquid from the storage tank to enter the storage chamber, and the outlet allows liquid from the storage chamber to exit. The pumping assembly includes a switch; operating the switch allows the pumping assembly to draw liquid from the storage tank into the storage chamber and simultaneously discharge liquid from the storage chamber through the outlet. The first guide tube has one end connected to the liquid outlet and the other end detachably connected to the first liquid inlet, for guiding the liquid discharged from the liquid outlet into the first liquid inlet.

2. The extrusion structure as described in claim 1, characterized in that, The first guide tube is detachably connected to the liquid outlet; And / or, the first guide tube can be inserted into the first inlet, and the first guide tube is connected to the first inlet.

3. The extrusion structure as described in claim 1, characterized in that, The extrusion structure also includes a second guide tube, one end of which is connected to the second liquid inlet, and the other end is used to connect to the liquid storage tank.

4. The extrusion structure as described in claim 3, characterized in that, The second guide tube is detachably connected to the second liquid inlet.

5. The extrusion structure as described in claim 1, characterized in that, The pumping assembly includes a pump body, a pump head, a pump piston, a spring, a first check valve, and a second check valve. The switching part is configured as a pump head. The pump body has a pump chamber. One end of the pump piston is located in the pump chamber, and the other end is located outside the pump body and connected to the pump head. One end of the spring is connected to the pump body, and the other end is connected to the pump piston or the pump head. The spring is used to cause the pump head and the pump piston to rebound. The second liquid inlet is provided in the pump body, the liquid outlet is provided in the pump head, the liquid storage chamber is provided in the pump chamber, a first flow channel is provided between the second liquid inlet and the liquid storage chamber, the first one-way valve is located in the liquid storage chamber and is provided close to the first flow channel, a second flow channel is provided between the liquid storage chamber and the liquid outlet, and the second one-way valve is provided in the second flow channel; Pressing the pump head closes the first one-way valve and opens the second one-way valve, while simultaneously deforming the spring; releasing the pump head causes the spring to rebound, opening the first one-way valve and closing the second one-way valve.

6. The extrusion structure as described in claim 5, characterized in that, The first one-way valve includes a first limiting seat, a first ball, and a first valve seat fixed in the liquid storage chamber, wherein the first ball is disposed between the first limiting seat and the first valve seat; And / or, the second check valve includes a second limiting seat, a second ball, and a second valve seat disposed in the second flow channel, wherein the second ball is disposed between the second limiting seat and the second valve seat.

7. The extrusion structure as described in claim 5, characterized in that, The spring is disposed in the liquid storage chamber, with one end of the spring connected to the bottom of the liquid storage chamber and the other end connected to the pump piston; And / or, the second flow channel is divided into two sections, one of which is located at the pump piston and the other at the pump head.

8. The extrusion structure according to any one of claims 1 to 7, characterized in that, The extrusion structure also includes a connector fixed to the pumping assembly, and the pumping assembly is detachably connected to the bronchoscope body through the connector.

9. The extrusion structure as described in claim 8, characterized in that, The connector is configured as an elastic clamping arm, and the pumping assembly can hold the bronchoscope body through the elastic clamping arm.

10. A bronchoscopic device, characterized in that, It includes a bronchoscope body and an extrusion structure, wherein the extrusion structure is the extrusion structure as described in any one of claims 1 to 9.

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