Negative pressure suction device

Abstract

The utility model relates to the field of auxiliary products of medical negative pressure systems, in particular to a negative pressure suction device. The negative pressure suction device comprises a connector body, an inner cavity is formed in the connector body, an annular guide rail fixedly connected with the connector body is arranged at the bottom of the inner cavity, and an annular sliding groove is formed between the annular guide rail and the inner wall of the inner cavity; a first shaft hole communicated with the inner cavity is formed in the bottom of the joint main body; a first joint, a second joint and a third joint which are fixedly connected are arranged outside the joint main body; the connecting cover is connected with the joint main body, and the inner cavity is sealed by the connecting cover; a fixedly connected shaft seat is arranged below the connecting cover, and the shaft seat is provided with a second shaft hole; the side face of the connecting cover is provided with a fan-shaped sealing plate and a limiting plate which are fixedly connected, the limiting plate is provided with a connecting shaft which is fixedly connected, and the connecting shaft penetrates through the first shaft hole and is fixedly connected with the second shaft hole.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary products of medical negative pressure systems, in particular to a negative pressure suction device. Background Art

[0002] The medical negative pressure suction system, also known as the central suction system or central negative pressure suction, is a very important equipment in the hospital. The system includes a negative pressure source of the suction system, which is composed of a vacuum pump unit. The vacuum pump suctions the suction system pipeline to the required negative pressure value; there is also a suction pipeline connecting the central suction station and the suction terminal; and negative pressure suction terminals located in the operating room, emergency room, treatment room and each ward. The connection port of each terminal is also equipped with a negative pressure regulating valve for adjusting the negative pressure; the medical negative pressure suction system is mainly used to remove sputum, blood, pus and other contaminants from the patient's body; especially in life support areas such as operating rooms and ICUs, large-flow uninterrupted supply is required; when the negative pressure system is used for coughing up sputum, it also needs to be used with a sputum suction cup, which is a container for collecting and storing secretions drawn from the patient's mouth or airway.

[0003] Bronchoscope is also called fiber bronchoscope, which includes hard bronchoscope and soft bronchoscope, among which soft bronchoscope is also called flexible bronchoscope, and flexible bronchoscope is divided into fiber bronchoscope and electronic bronchoscope. It is a medical instrument used for examination of lobes, segments and subsegments of the bronchi; fiber bronchoscope is suitable for observation of lobes, segments and subsegments of bronchial lesions, biopsy sampling, bacteriology, cytology examination, and photography, teaching and dynamic recording with TV system. The bronchoscope is equipped with a biopsy sampling structure, which can help find early lesions and carry out internal surgical operations such as polypectomy. It is a good precision instrument for bronchial and lung disease research and postoperative examination. Bronchoscopy is to place the bronchoscope into the patient's lower respiratory tract through the mouth or nose to directly observe the lesions of the trachea and bronchi, and carry out corresponding treatment according to the condition of the lesions.

[0004] At present, various systems and equipment in hospitals need to be used in combination. For example, when performing tracheotomy or endotracheal intubation on patients, continuous suction under the glottis is required, and sputum suction is performed using a sputum suction tube. When sputum, blood, or secretions are suctioned through a bronchoscope, the equipment needs to be connected to a negative pressure suction system for operation. When performing bronchoscope operations, there are at least the following problems:

[0005] 1. When ordinary patients only need to suction sputum, they can directly connect the negative pressure tube to a suction tube for use; if it is for some patients who need bronchoscopy, the negative pressure tube needs to be passed through the channel of the bronchoscope to suction sputum, but during the bronchoscopy, it is easy for oral secretions to come out, which is uncomfortable for the patient and affects the doctor's entire operation; therefore, when the patient has oral secretions, it is necessary to disconnect the negative pressure suction tube from the bronchoscope, use the negative pressure tube to suck away the secretions in the patient's mouth, and then reconnect the negative pressure tube to the bronchoscope. This makes the doctor's operation cumbersome and reduces efficiency, and it is also unhygienic;

[0006] 2. When patients undergo bronchoscopy, oral secretions need to be directly sucked out with a negative pressure tube. However, the negative pressure tube is prone to sucking the patient's oral mucosa during the suction process, and the doctor needs to pay attention to the patient's oral condition at all times, which not only causes damage to the patient's oral mucosa, but also brings a burden to the doctor's work;

[0007] 3. Currently, there is only one negative pressure interface in the bronchoscope room of the hospital. If there is oral secretion in the patient during the bronchoscopy operation, the negative pressure tube of the bronchoscope can only be pulled out to suck the oral secretions. If two suctions are required at the same time, two negative pressure end interfaces must be set up in the bronchoscope room and two pressure gauges must be installed to connect the two negative pressure suction tubes. Too many negative pressure tubes not only increase the waste of costs, but also interfere with the doctor's operation. Utility Model Content

[0008] The purpose of the utility model is to solve at least part of the above existing problems and bring corresponding technical effects.

[0009] In order to solve the above technical problems, the utility model of the negative pressure suction device comprises:

[0010] A joint body, wherein the joint body has an inner cavity inside, the bottom of the inner cavity has an annular guide rail fixedly connected to the joint body, and an annular groove is formed between the annular guide rail and the inner wall of the inner cavity; the bottom of the joint body has a first axial hole connected to the inner cavity; the outside of the joint body has a first joint, a second joint and a third joint fixedly connected, and the first joint, the second joint and the third joint are respectively connected to the inner cavity;

[0011] A connecting cover is connected to the joint body and seals the inner cavity; a fixedly connected shaft seat is provided below the connecting cover, and the shaft seat has a second shaft hole; a fixedly connected fan-shaped sealing plate is provided on the side of the connecting cover,

[0012] The limiting plate has a fixedly connected connecting shaft, wherein the connecting shaft passes through the first shaft hole and is fixedly connected to the second shaft hole.

[0013] As a preferred embodiment of the negative pressure suction device of the utility model, the bottom surface of the joint body has a sealing hole, the diameter of the sealing hole is larger than the first axial hole and overlaps with the first axial hole; it includes a first sealing ring, which is installed in the sealing hole.

[0014] As a preferred embodiment of the negative pressure suction device of the utility model, the end of the connecting shaft has an elastic buckle for fixed connection, and the side surface of the shaft seat has a positioning hole connected to the second shaft hole.

[0015] As a preferred embodiment of the negative pressure suction device of the utility model, it includes a second sealing ring, which is installed in the annular sliding groove.

[0016] As a preferred embodiment of the negative pressure suction device of the utility model, a sealing groove is provided around the connecting cover, a third sealing ring is installed in the sealing groove, and the third sealing ring abuts against the inner wall of the inner cavity.

[0017] As a preferred embodiment of the negative pressure suction device of the utility model, it includes a first connecting tube, one end of which is connected to the first connector, and the other end of which is connected to a sputum suction tube.

[0018] As a preferred embodiment of the negative pressure suction device of the utility model, it comprises a suction tube, a memory metal wire is embedded in the tube wall of the suction tube;

[0019] It comprises a second connecting tube, one end of which is connected to the second joint, and the other end of which is connected to the suction tube.

[0020] As a preferred embodiment of the negative pressure suction device of the utility model, the other end of the suction tube connected to the second connecting tube has a fixedly connected limiting ring;

[0021] It comprises a suction head cover, the inner wall of which is provided with a limiting groove; the outer end of the suction head cover is provided with a suction hole, and the end surface of the suction head cover is provided with a fixedly connected limiting step.

[0022] As a preferred embodiment of the negative pressure suction device of the utility model, it includes a third connecting tube, one end of which is connected to the third joint, and the other end of which is connected to a negative pressure flow meter.

[0023] Beneficial Effects

[0024] The utility model solves the above existing problems and other existing problems not mentioned above and accordingly brings at least the following innovative advantages:

[0025] The negative pressure suction device of the utility model realizes the opening and closing of the first joint and the second joint through the joint body and its own structure and related accessories, and through the fan-shaped sealing plate, so that when applied to the negative pressure system, two different negative pressure tubes can be connected at the same time; it solves the problem that in the current process of doing bronchoscopy, if there are other negative pressure requirements, two negative pressure end interfaces must be set in the bronchoscopy room and two pressure gauges must be installed to connect the two negative pressure suction tubes. Too many negative pressure tubes not only increase the waste of cost, but also interfere with the doctor's operation.

[0026] The negative pressure suction device of the utility model has a memory metal wire embedded in the suction tube, so it can be used in conjunction with the first connecting tube; the first connecting tube is used to connect the sputum suction tube or the internal channel of the bronchoscope for bronchoscope operation, and the suction tube of the second connecting tube can be placed in the patient's mouth for a long time. Since the suction tube has the memory metal wire, it can be bent and hung in the patient's mouth, so that when secretions appear in the patient's mouth, they can be sucked away in time; that is, when the first joint and the second joint are in an open state, the secretions in the oral cavity can be sucked away simultaneously during the bronchoscope operation; the current problem that when secretions appear in the patient's mouth, the negative pressure suction tube needs to be disconnected from the bronchoscope, the secretions in the patient's mouth need to be sucked away by the negative pressure tube, and then the negative pressure tube needs to be reconnected to the bronchoscope, which on the one hand brings cumbersomeness and reduced efficiency to the doctor's operation, and on the other hand is unhygienic.

[0027] The negative pressure suction device of the utility model is provided with a limiting step on the surface of the suction head cover, so that when used in the patient's mouth, the suction hole is limited by the limiting step, thereby maintaining the distance between the suction hole and the oral mucosa, solving the problem that the oral secretions of the patient are easily sucked into the oral mucosa of the patient during suction using a negative pressure tube, and the doctor needs to pay attention to the oral condition of the patient all the time, which not only causes damage to the patient's oral mucosa, but also brings a burden to the doctor's work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0029] Figure 2 for Figure 1 A top view schematic diagram of

[0030] Figure 3 for Figure 1 Schematic diagram of the decomposition of

[0031] Figure 4 for Figure 1 A partial enlarged view of the "A" area;

[0032] Figure 5 for Figure 2The "B" area in the figure is a cross-sectional diagram at the "AA" position;

[0033] Figure 6 for Figure 2 A magnified 3D image of the parts in the "C" area;

[0034] Figure 7 for Figure 6 Schematic diagram of the internal section;

[0035] Figure 8 for Figure 6 A three-dimensional schematic diagram of another embodiment;

[0036] Fig. 9 This is a rendering of the use status of the utility model.

[0037] In the figure: 1. joint body, 2. inner cavity, 3. annular guide rail, 4. annular slide groove, 5. first axial hole, 6. first joint, 7. second joint, 8. third joint, 9. connecting cover, 10. shaft seat, 11. second axial hole, 12. fan-shaped sealing plate, 13. limiting plate, 14. connecting shaft, 15. sealing hole, 16. first sealing ring, 17. elastic buckle, 18. positioning card hole, 19. second sealing ring, 20. sealing groove, 21. third sealing ring, 22. first connecting pipe, 23. suction tube, 24. suction tube, 25. memory metal wire, 26. second connecting pipe, 27. limiting ring, 28. suction head cover, 29. limiting groove, 30. suction hole, 31. limiting step, 32. third connecting pipe, 33. negative pressure flow meter, 34. scale, 35. pointer. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present disclosure.

[0039] The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only part of the embodiments of the present disclosure, but not all of the embodiments.

[0040] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present disclosure.

[0041] Example 1

[0042] like Figures 1 to 9 As shown, the negative pressure suction device of the utility model comprises a joint body 1, Figure 3 and Figure 4 The joint body 1 is shown to be a cylindrical structure; Figure 3 and Figure 5As shown, the joint body 1 has an inner cavity 2, the bottom of the inner cavity 2 has an annular guide rail 3 fixedly connected to the joint body 1, and an annular groove 4 is formed between the annular guide rail 3 and the inner wall of the inner cavity 2; Figure 5 As shown, the bottom of the joint body 1 has a first axial hole 5 connected to the inner cavity 2, and the center of the first axial hole 5 overlaps with the axis of the joint body 1; Figures 1 to 4 The first connector 6, the second connector 7 and the third connector 8 are respectively shown as being fixedly connected to the outside of the connector body 1. Figure 5 It is shown that the first connector 6, the second connector 7 and the third connector 8 are respectively connected to the inner cavity 2;

[0043] A connecting cover 9 is connected to the joint body 1 and seals the inner cavity 2. Figure 3 The separation effect of the connection cover 9 and the connector body 1 is shown. Figure 5 The sealing effect of the connection cover 9 sealing the inner cavity of the joint body 1 is shown; Figure 3 The opening on the upper part of the connector is shown as a port, that is, the connection cover 9 is connected to the port of the inner cavity 2. Figure 3 and Figure 4 It is shown that the connection cover 9 is a circular structure, and a fixedly connected shaft seat 10 is provided below the connection cover 9, and the shaft seat 10 has a second shaft hole 11; Figure 5 It is shown that the second axial hole 11 and the first axial hole 5 are located on the same axis; Figure 3 and Figure 5 The side of the connecting cover 9 is shown to have a fan-shaped sealing plate 12 fixedly connected, as shown in FIG. Figure 5 As shown, the surface of the fan-shaped sealing plate 12 is consistent with the inner wall of the inner cavity 2. When the connection cover 9 is installed on the joint body 1, the fan-shaped sealing plate 12 is in the inner cavity 2, and the surface of the fan-shaped sealing plate 12 is in contact with the inner wall of the inner cavity 2, and the lower end of the fan-shaped sealing plate 12 is in the annular groove 4;

[0044] The limiting plate 13 is in the shape of a disc. Figure 5 It is shown that the diameter of the limiting plate 13 is larger than the diameter of the first axial hole 5 ; the limiting plate 13 has a fixedly connected connecting shaft 14 , and the connecting shaft 14 passes through the first axial hole 5 and is fixedly connected to the second axial hole 11 .

[0045] Further, the joint body 1 is provided with scales 34 at positions corresponding to the first joint 6 and the second joint 7, and the side of the connection cover 9 is provided with a pointer 35, and the position of the pointer 35 is on the same side as the fan-shaped sealing plate 12; that is, in use, when the pointer 35 corresponds to the first joint 6 or the second joint 7, it means that the fan-shaped sealing plate 12 seals the passage of the first joint 6 or the second joint 7; and further, the fan-shaped sealing plate 12 can also partially overlap with the first joint 6 or the second joint 7, so as to adjust the size of the flow cross section of the first joint 6 or the second joint 7. When the pointer 35 does not overlap with the first joint 6, the second joint 7 and the third joint 8, it means that the first joint 6, the second joint 7 and the third joint 8 are all kept in a smooth state. Therefore, the fan-shaped sealing plate 12 is used to close or adjust the opening or closing of any one of the first joint 6, the second joint 7 and the third joint 8. Further, the joint body 1 can be made of a transparent plastic material. If at least the joint body 1 is made of a transparent plastic material, the scale 34 and the pointer 35 mentioned above can be cancelled.

[0046] When the utility model is used, Fig. 9 As shown, it includes a third connecting pipe 32, one end of which is connected to the third connector 8, and the other end is connected to a negative pressure flow meter 33. The negative pressure flow meter 33 is an existing component and is used to connect to the negative pressure suction terminal of the operating room, emergency room, treatment room or each ward.

[0047] The utility model realizes the opening and closing of the first joint 6 and the second joint 7 through the joint body 1 and its own structure and related accessories, and through the fan-shaped sealing plate 12, so that when applied to the negative pressure system, two different negative pressure tubes can be connected at the same time; it solves the problem that in the current process of doing bronchoscopy, if there are other negative pressure requirements, two negative pressure end interfaces must be set in the bronchoscopy room and two pressure gauges must be installed to connect the two negative pressure suction tubes. Too many negative pressure tubes not only increase the waste of cost, but also interfere with the doctor's operation.

[0048] Further, such as Figure 5 As shown, the bottom surface of the joint body 1 has a sealing hole 15, the diameter of which is larger than the first shaft hole 5 and overlaps with the first shaft hole 5; and includes a first sealing ring 16, which is installed in the sealing hole 15. Figure 5 When the first sealing ring 16 is installed in the sealing hole 15 and the connecting shaft 14 is installed in the first shaft hole 5 , the inner wall of the first sealing ring 16 abuts against the surface of the connecting shaft 14 , and the lower part of the first sealing ring 16 abuts against the limiting plate 13 .

[0049] For further information, see Figure 5The end of the connecting shaft 14 has an elastic buckle 17 that is fixedly connected, and the side of the shaft seat 10 has a positioning buckle hole 18 that is connected to the second shaft hole 11. When the connecting shaft 14 is in the second shaft hole 11, the elastic buckle 17 is elastically deformed and stuck in the second shaft hole 11.

[0050] For further information, see Figure 3 , including a second sealing ring 19, such as Figure 5 As shown, the second sealing ring 19 is installed in the annular groove 4.

[0051] For further information, see Figure 5 A sealing groove 20 is provided around the connection cover 9 , and a third sealing ring 21 is installed in the sealing groove 20 . The third sealing ring 21 abuts against the inner wall of the inner cavity 2 .

[0052] Further, such as Figures 1 to 3 and Fig. 9 As shown, it includes a first connecting tube 22, one end of which is connected to the first connector 6, and the other end is connected to a sputum suction tube 23. The sputum suction tube 23 is used for sputum suction. In practical applications, the first connecting tube 22 can be connected to the sputum suction tube 23 or to the internal channel of the bronchoscope.

[0053] Further, such as Figures 1 to 3 As shown, it includes a straw 24, wherein Figure 7 The straw 24 has a fixedly connected memory metal wire 25 embedded in the wall thereof, and further includes a second connecting tube 26, one end of which is connected to the second connector 7, and the other end of which is connected to the straw 24. The straw 24 is preferably made of a soft plastic material. In hospital applications, the suction tube 24 can be used in conjunction with the first connecting tube 22 because it has a built-in memory metal wire 25; the first connecting tube 22 is used to connect the sputum suction tube 23 or the internal channel of the bronchoscope for bronchoscope operation, while the suction tube 24 of the second connecting tube 26 can be placed in the patient's mouth for a long time. Since the suction tube 24 has the memory metal wire 25, it can be bent and hung in the patient's mouth so that secretions can be sucked away in time when secretions appear in the patient's mouth; that is, when the first joint 6 and the second joint 7 are in an open state, the secretions in the oral cavity can be sucked away simultaneously during the bronchoscope operation; the problem that when secretions appear in the patient's mouth, the negative pressure suction tube needs to be disconnected from the bronchoscope, the secretions in the patient's mouth need to be sucked away by the negative pressure tube, and then the negative pressure tube needs to be reconnected to the bronchoscope, which on the one hand brings cumbersomeness and reduced efficiency to the doctor's operation, and on the other hand is unhygienic.

[0054] For further information, see Figure 7The other end of the suction pipe 24 connected to the second connecting pipe 26 has a fixedly connected limiting ring 27;

[0055] It includes a suction head cover 28, the inner wall of which has a limiting groove 29; when the suction head cover 28 is installed on the suction tube 24, the limiting ring 27 is located in the limiting groove 29; Figure 6 It is shown that the outer end of the suction head cover 28 has a plurality of suction holes 30, and the end surface of the suction head cover 28 has a fixedly connected limiting step 31; by arranging the limiting step 31 on the surface of the suction head cover 28, when the suction head cover 28 is used in the patient's mouth, the suction hole 30 is limited by the limiting step 31, thereby maintaining the distance between the suction hole 30 and the oral mucosa, thereby solving the problem that the patient's oral secretions are easily sucked into the patient's oral mucosa during the process of suction with a negative pressure tube, and the doctor needs to pay attention to the patient's oral condition all the time, which on the one hand causes damage to the patient's oral mucosa, and on the other hand brings a burden to the doctor's work.

[0056] Example 2

[0057] This embodiment 2 includes all the solutions of embodiment 1, and the similarities are not repeated here. The difference is that Figure 8 As shown, in Example 2, the memory metal wire 25 of Example 1 is deleted, and the shape of the straw 24 is changed to a V-shaped structure. During production, the material is preferably plastic material. Since the shape of the straw 24 is a V-shaped structure, when placed in the patient's mouth, it can have a hook-like effect, so that the straw 24 is not easy to fall out of the mouth.

[0058] The words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0059] The above-mentioned preferred embodiments of the utility model are only and are not intended to limit the utility model. The protection scope of the utility model is defined by the attached claims. For ordinary technicians in this field, other embodiments can be obtained according to the drawings without creative work, and any changes based on the claims of the utility model are within the protection scope of the utility model.

Claims

1. A negative pressure suction device, characterized in that: include: A joint body, wherein the joint body has an inner cavity inside, the bottom of the inner cavity has an annular guide rail fixedly connected to the joint body, and an annular groove is formed between the annular guide rail and the inner wall of the inner cavity; the bottom of the joint body has a first axial hole connected to the inner cavity; the outside of the joint body has a first joint, a second joint and a third joint fixedly connected, and the first joint, the second joint and the third joint are respectively connected to the inner cavity; A connecting cover is connected to the joint body and seals the inner cavity; a fixedly connected shaft seat is provided below the connecting cover, and the shaft seat has a second shaft hole; a fixedly connected fan-shaped sealing plate is provided on the side of the connecting cover, The limiting plate has a fixedly connected connecting shaft, wherein the connecting shaft passes through the first shaft hole and is fixedly connected to the second shaft hole.

2. The negative pressure suction device according to claim 1, characterized in that: The bottom surface of the joint body is provided with a sealing hole, the diameter of which is larger than the first axial hole and overlaps with the first axial hole; and the joint body includes a first sealing ring installed in the sealing hole.

3. The negative pressure suction device according to claim 1, characterized in that: The end of the connecting shaft is provided with an elastic buckle for fixed connection, and the side surface of the shaft seat is provided with a positioning clamping hole connected to the second shaft hole.

4. The negative pressure suction device according to claim 1, characterized in that: It includes a second sealing ring which is installed in the annular sliding groove.

5. The negative pressure suction device according to claim 1, characterized in that: A sealing groove is arranged around the connection cover, a third sealing ring is installed in the sealing groove, and the third sealing ring abuts against the inner wall of the inner cavity.

6. The negative pressure suction device according to claim 1, characterized in that: It comprises a first connecting tube, one end of which is connected to the first joint, and the other end of which is connected to a sputum suction tube.

7. The negative pressure suction device according to claim 1, characterized in that: The invention comprises a straw, wherein a memory metal wire is embedded in the wall of the straw; It comprises a second connecting tube, one end of which is connected to the second joint, and the other end of which is connected to the suction tube.

8. The negative pressure suction device according to claim 7, characterized in that: The other end of the straw connected to the second connecting pipe is provided with a fixedly connected limiting ring; It comprises a suction head cover, the inner wall of which is provided with a limiting groove; the outer end of the suction head cover is provided with a suction hole, and the end surface of the suction head cover is provided with a fixedly connected limiting step.

9. The negative pressure suction device according to claim 1, characterized in that: It comprises a third connecting pipe, one end of which is connected to the third joint, and the other end of which is connected to a negative pressure flow meter.

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