Hysteroscope infusion apparatus capable of preventing air embolism

Abstract

The hysteroscope infusion apparatus comprises an inner cylinder and an outer cylinder, an opening is formed in the top of the inner cylinder, a liquid outlet pipe is arranged at the bottom of the inner cylinder, an inner plug attached to the inner wall of the inner cylinder is arranged in the inner cylinder, a liquid containing space is formed between the inner plug and the inner wall of the inner cylinder, an exhaust pipe is arranged in the middle of the inner plug, and a liquid outlet pipe is arranged in the outer cylinder. The exhaust pipe penetrates through the inner plug to be communicated with the liquid containing space, so that when the inner plug is stressed to move downwards, air in the liquid containing space is exhausted outwards from the exhaust pipe, a sealing cover is arranged on the top of the exhaust pipe, and a control valve is arranged on the liquid outlet pipe. Air in the liquid containing space is exhausted through the inner plug and the exhaust pipe, so that uterine cavity perfusate in the liquid containing space does not make contact with the air, the inner plug is pressed downwards by injecting gas to drain the perfusate, and the possibility of air embolism is eradicated fundamentally.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a hysteroscopic infusion device capable of preventing air embolism. Background Art

[0002] Currently, in order to fully expose the surgical field of view during hysteroscopic surgery, liquid needs to be injected into the uterine cavity to expand the uterine cavity and expose the field of view. Continuous liquid perfusion can prevent the lens from being contaminated by blood, thereby ensuring the clarity of the field of view.

[0003] The current hysteroscopic infusion device is shown in the attached figure Figure 1 As shown, it includes a first infusion bag 01 and a second infusion bag 02, and the first infusion bag 01 and the second infusion bag 02 are connected by a connecting tube 03, and uterine cavity perfusion fluid is injected into the first infusion bag 01 and the second infusion bag 02. The first infusion bag 01 is connected to the air outlet end of the uterine distension device through the trachea 04, and the second infusion bag 02 is connected to the hysteroscope lens through the liquid tube 05.

[0004] During actual use, the gas outlet end of the uterine distension device injects gas into the first infusion bag 01 through the air tube 04, so that the air pressure inside the first infusion bag 01 increases, and the uterine distension fluid inside the first infusion bag 01 will reach the second infusion bag 02 through the connecting tube 03, so that the uterine distension fluid inside the second infusion bag 02 reaches the patient's body through the liquid tube 05. As the gas is continuously injected, the uterine cavity perfusion fluid inside the first infusion bag 01 is continuously input into the patient's body. When all the liquid inside the first infusion bag 01 flows into the second infusion bag 02, the first infusion bag 01 is replaced so that the first infusion bag 01 contains uterine cavity perfusion fluid.

[0005] However, in actual operation, in order to fully expose the surgical field of view, a higher air pressure will be used, which will lead to too fast use of uterine cavity perfusion fluid. When the first infusion bag is not replaced in time and the liquid inside the second infusion bag is used up, a large amount of air will be injected into the uterine cavity, resulting in serious consequences of air embolism. Utility Model Content

[0006] The utility model aims to provide a hysteroscopic infusion device for preventing air embolism, so as to solve the technical problem in the prior art that air embolism is caused by untimely replacement of the first infusion bag.

[0007] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0008] A hysteroscopic infusion device for preventing air embolism comprises an inner tube and an outer tube, wherein the inner tube has an opening at the top, a liquid outlet pipe is arranged at the bottom of the inner tube, an inner plug is arranged inside the inner tube and is fitted with the inner wall of the inner tube, a liquid space is formed between the inner plug and the inner wall of the inner tube, an exhaust pipe is arranged in the middle of the inner plug, and the exhaust pipe passes through the inner plug and is connected with the liquid space, so that when the inner plug is forced to move downward, the air inside the liquid space is discharged to the outside through the exhaust pipe, a sealing cover is arranged on the top of the exhaust pipe, and a control valve is arranged on the liquid outlet pipe;

[0009] The bottom of the outer cylinder is open, and the top of the inner cylinder passes through the opening at the bottom of the outer cylinder and is arranged inside the outer cylinder, so that a closed space is formed between the inner cylinder, the inner plug and the inner wall of the outer cylinder, and the top of the outer cylinder is provided with an air inlet connected to the closed space.

[0010] As a preferred solution of the utility model, the outer surface of the inner cylinder is provided with an external thread, the inner wall of the outer cylinder is provided with an internal thread, and the inner cylinder and the outer cylinder are threadedly connected via the external thread and the internal thread.

[0011] As a preferred solution of the utility model, a one-way valve is provided inside the exhaust pipe, so that the gas and liquid inside the liquid-filling space flow unidirectionally toward the top of the inner plug.

[0012] As a preferred solution of the utility model, scale lines are provided on the outer surface of the inner cylinder.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discharges the air in the liquid-filled space through the inner plug and the exhaust pipe, so that the uterine cavity perfusion liquid in the liquid-filled space does not contact with the air, and discharges the liquid by pressing down the inner plug through the injection of gas, thereby eliminating the possibility of air embolism from the root. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of a hysteroscopic infusion device in the prior art;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the exhaust pipe and the inner plug in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the inner cylinder in the utility model.

[0020] The numbers in the figure represent the following:

[0021] 01-first infusion bag; 02-second infusion bag; 03-connecting tube; 04-trachea; 05-liquid tube;

[0022] 1-inner cylinder; 2-outer cylinder; 3-liquid outlet pipe; 4-inner plug; 5-liquid filling space; 6-exhaust pipe; 7-sealing cover; 8-enclosed space; 9-air inlet; 10-check valve; 11-scale line; 12-control valve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 2 and Figure 3 As shown, the present invention provides a hysteroscopic infusion device for preventing air embolism, which mainly avoids the problem of air embolism by preventing air from contacting the uterine cavity perfusion fluid.

[0025] The hysteroscopic infusion device for preventing air embolism comprises an inner tube 1 and an outer tube 2, wherein the inner tube 1 has an opening at the top, and a liquid outlet pipe 3 is arranged at the bottom of the inner tube 1, and an inner plug 4 is arranged inside the inner tube 1 to fit the inner wall of the inner tube 1, and a liquid space 5 is formed between the inner plug 4 and the inner wall of the inner tube 1, and an exhaust pipe 6 is arranged in the middle of the inner plug 4, and the exhaust pipe 6 passes through the inner plug 4 and is connected with the liquid space 5, so that when the inner plug 4 is forced to move downward, the air inside the liquid space 5 is discharged to the outside through the exhaust pipe 6, and a sealing cover 7 is arranged on the top of the exhaust pipe 6, and a control valve 12 is arranged on the liquid outlet pipe 3;

[0026] The outer tube 2 has an opening at the bottom, and the top of the inner tube 1 passes through the opening at the bottom of the outer tube 2 and is arranged inside the outer tube 2, so that a closed space 8 is formed between the inner tube 1, the inner plug 4 and the inner wall of the outer tube 2, and an air inlet 9 connected to the closed space 8 is provided at the top of the outer tube 2.

[0027] The hysteroscopic infusion device currently used in clinical practice discharges fluid by letting in air. When the first infusion bag 01 is not replaced in time and the liquid inside the second infusion bag 02 is used up, a large amount of air will be injected into the uterine cavity, resulting in the serious consequence of air embolism. Therefore, it is necessary to develop a hysteroscopic infusion device that can avoid air embolism.

[0028] In this embodiment, the air inside the liquid space 5 is discharged through the inner plug 4 and the exhaust pipe 6, so that the uterine cavity perfusion liquid in the liquid space 5 does not come into contact with the air, and the inner plug 4 is pressed down by injecting gas to discharge the liquid, thereby eliminating the possibility of air embolism from the root.

[0029] In actual use, 1. close the control valve 12, take the inner plug 4 out of the inner tube 1, inject the uterine cavity perfusion liquid into the inner tube 1, open the sealing cover 7 on the inner plug 4, and put the inner plug 4 into the inner tube 1;

[0030] 2. Move the inner plug 4 downward until the liquid in the liquid space 5 is discharged from the exhaust pipe 6, and when the inner cylinder 1 is turned upside down after the sealing cover 7 is closed, no bubbles move in the liquid space 5, and then close the sealing cover 7 on the top of the inner plug 4;

[0031] 3. Connect the inner tube 1 to the outer tube 2, connect the liquid outlet tube 3 to the hysteroscope lens, and open the control valve 12;

[0032] 4. Connect the air inlet 9 to the air outlet of the uterine distension instrument, and inject gas into the enclosed space 8 through the air inlet 9 to move the inner plug 4 downward, thereby discharging the liquid in the liquid space 5 from the liquid outlet tube 3.

[0033] As a preferred embodiment of this embodiment, the outer surface of the inner tube 1 is provided with an external thread, the inner wall of the outer tube 2 is provided with an internal thread, and the inner tube 1 and the outer tube 2 are threadedly connected via the external thread and the internal thread, so that the inner tube 1 and the outer tube 2 can be detached and the sealing of the enclosed space 8 is ensured.

[0034] In order to make the liquid and gas in the liquid-containing space 5 flow outward in one direction, further, as Figure 3 As shown, a one-way valve 10 is provided inside the exhaust pipe 6 , so that the gas and liquid inside the liquid-filling space 5 can flow toward the top of the inner plug 4 in one direction.

[0035] In order to avoid water intoxication during hysteroscopic surgery, it is necessary to know the amount of fluid intake and output so as to calculate how much fluid the patient absorbs. Figure 4 As shown, the outer surface of the inner tube 1 is provided with scale lines 11. The amount of initial liquid and remaining liquid is measured through the scale lines 11 to indirectly calculate the amount of uterine cavity perfusion fluid used.

[0036] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A hysteroscopic infusion device for preventing air embolism, characterized in that: The invention comprises an inner cylinder (1) and an outer cylinder (2), wherein the inner cylinder (1) is open at the top, and a liquid outlet pipe (3) is arranged at the bottom of the inner cylinder (1). An inner plug (4) is arranged inside the inner cylinder (1) and is in contact with the inner wall of the inner cylinder (1). A liquid storage space (5) is formed between the inner plug (4) and the inner wall of the inner cylinder (1). An exhaust pipe (6) is arranged in the middle of the inner plug (4), and the exhaust pipe (6) passes through the inner plug (4) and is connected with the liquid storage space (5), so that when the inner plug (4) is forced to move downward, the air inside the liquid storage space (5) is discharged to the outside through the exhaust pipe (6). A sealing cover (7) is arranged at the top of the exhaust pipe (6), and a control valve (12) is arranged on the liquid outlet pipe (3); The outer tube (2) has an opening at the bottom, and the top of the inner tube (1) passes through the opening at the bottom of the outer tube (2) and is arranged inside the outer tube (2), so that a closed space (8) is formed between the inner tube (1), the inner plug (4) and the inner wall of the outer tube (2), and an air inlet (9) connected to the closed space (8) is provided at the top of the outer tube (2).

2. The hysteroscopic infusion device for preventing air embolism according to claim 1, characterized in that: The outer surface of the inner cylinder (1) is provided with an external thread, and the inner wall of the outer cylinder (2) is provided with an internal thread. The inner cylinder (1) and the outer cylinder (2) are threadably connected via the external thread and the internal thread.

3. The hysteroscopic infusion device for preventing air embolism according to claim 2, characterized in that: A one-way valve (10) is provided inside the exhaust pipe (6), so that the gas and liquid inside the liquid-filled space (5) flow unidirectionally toward the top of the inner plug (4).

4. The hysteroscopic infusion device for preventing air embolism according to claim 3, characterized in that: Scale lines (11) are provided on the outer surface of the inner cylinder (1).

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