Negative pressure sputum suction device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a negative pressure sputum suction device which comprises a sputum suction tube body, and an adsorption channel penetrating through the sputum suction tube body is arranged in the sputum suction tube body. The sputum suction tube body comprises an adsorption tube section, a main tube section and a connector section, and an adsorption hole communicated with the adsorption channel is formed in the end area of the adsorption tube section; the main pipe section is rotatably connected and matched with the joint section; a traction rope is further arranged in the sputum suction tube body, and a first matching form and a second matching form are arranged between the adsorption tube section and the main tube section. After the sputum suction tube body is inserted into the trachea of the human body by a target depth through the trachea cannula, the adsorption tube section and the main tube section are adjusted to be in the second matching state, and then in the sputum suction operation, the main tube section is rotated, so that the end part of the adsorption tube section skims over the inner wall of the trachea of the human body in the circumferential direction; therefore, an invalid adsorption area on the upper portion of the trachea of the human body is eliminated, and sputum can be cleared away more thoroughly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a negative pressure sputum suction device. Background Art

[0002] In clinical critical care and respiratory disease management, airway secretion clearance is a key operation to maintain the patient's ventilation function. Traditional negative pressure suction technology is to insert a suction tube into the human body through the endotracheal tube, and rely on the negative pressure generated by the end hole or side hole to extract sputum.

[0003] To ensure the normal breathing of patients during suction, the outer diameter of the current mainstream suction tube is usually designed to be less than 30% of the inner diameter of the human airway. However, when suction is performed, the suction tube can only contact the lower 1 / 3 area of ​​the human trachea wall through gravity, and the upper part of the tube cavity will form an "ineffective adsorption area" due to lack of mechanical support, which will cause incomplete sputum removal and affect the patient's treatment.

[0004] Therefore, how to improve the clearance rate of sputum during sputum suction operation is a technical problem to be solved urgently in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a negative pressure sputum suction device to address the problem that in the prior art, during sputum suction operation, the sputum suction tube can only contact the area below the 1 / 3 of the human trachea wall through gravity, while the upper part of the tube cavity will form an "ineffective adsorption area" due to lack of mechanical support, which will cause incomplete sputum removal.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A negative pressure sputum suction device, comprising a sputum suction tube body, wherein an adsorption channel running through the sputum suction tube body is arranged inside the sputum suction tube body; the sputum suction tube body comprises an adsorption tube section, a main tube section and a joint section, wherein the adsorption tube section and the joint section are respectively arranged at two ends of the main tube section, the joint section is used to connect a negative pressure pipeline, and an end region of the adsorption tube section is provided with an adsorption hole connected with the adsorption channel; the main tube section and the joint section are rotatably connected and matched; a pulling rope is also arranged in the sputum suction tube body, wherein one end of the pulling rope is connected to the adsorption tube section, and the other end passes through the intersection of the main tube section and the joint section to form a free end, and the part where the pulling rope is connected to the adsorption tube section and the part where the pulling rope passes through are respectively located on both sides of the central axis of the sputum suction tube body;

[0008] The adsorption pipe section and the main pipe section have a first matching form and a second matching form;

[0009] In the first mating state, the central axis of the adsorption tube section coincides with the central axis of the main tube section;

[0010] Pull the pulling rope to cause deformation at the joint between the adsorption tube section and the main tube section. When the adsorption tube section tilts upward and its end abuts against the upper part of the human trachea, the two form a second mating state.

[0011] Preferably, a negative pressure control tube is further provided on the joint section. The central axis of the negative pressure control tube passes through the central axis of the sputum suction tube body, and the negative pressure control tube is communicated with the adsorption channel.

[0012] Preferably, the central axis of the negative pressure control tube is arranged perpendicular to the central axis of the sputum suction tube body.

[0013] Preferably, a fixing bolt is provided on the negative pressure control tube. The fixing bolt can move along the axial direction of the negative pressure control tube, and the free end of the pulling rope is connected to the fixing bolt.

[0014] Preferably, a wire groove is provided on the surface of the fixing bolt. When the pulling rope is in a tightened state, it is wound in the wire groove.

[0015] Preferably, the adsorption tube section includes a first tube body part and a second tube body part. The second tube body part is connected to the main tube section, and the cross section of the end of the first tube body part is set as an arc structure.

[0016] Preferably, a rotatable connection fit is provided between the first tube body part and the second tube body part.

[0017] Preferably, a support tube is obliquely arranged at the joint between the adsorption tube section and the main tube section. A clearance fit is formed between one end of the support tube and the inner wall of the sputum suction tube body.

[0018] Preferably, the support tube is obliquely arranged along the extension direction of the pulling rope, and the pulling rope passes through the support tube.

[0019] Preferably, a wing plate is further provided at one end where the main tube section is joined to the joint section.

[0020] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are:

[0021] 1. A negative pressure sputum suction device of the present utility model. After the sputum suction tube body is inserted into the target depth in the human airway through an endotracheal intubation, the adsorption tube section and the main tube section are adjusted to the second matching form. Then, during the sputum suction operation, by rotating the main tube section, the end of the adsorption tube section can sweep across the inner wall of the human trachea in the circumferential direction, thus eliminating the "ineffective adsorption area" in the upper part of the human trachea and making the sputum removal more thorough. Moreover, in this embodiment, when the second matching form is formed between the adsorption tube section and the main tube section, a certain gap will be formed between the adsorption holes provided on the adsorption tube section and the inner wall of the human trachea. In this way, it can prevent the adsorption tube section from tightly adhering to the inner wall of the human trachea under the action of negative pressure suction, causing damage to the inner wall of the human trachea and / or difficulty in moving the adsorption tube section in the human trachea, thereby improving the practicality of this new type in actual use;

[0022] 2. A negative pressure sputum suction device of the present utility model. A support tube is inclinedly arranged at the joint between the adsorption tube section and the main tube section, and a clearance fit is formed between one end of the support tube and the inner wall of the sputum suction tube body. With this structural arrangement, when the second matching form is formed between the adsorption tube section and the main tube section, the support tube can support the adsorption channel to prevent it from collapsing. Moreover, in this embodiment, a clearance fit is formed between one end of the support tube and the inner wall of the sputum suction tube body, which can avoid the support tube affecting the bending deformation of the sputum suction tube body, thereby further improving the practicality of this new type in actual use;

[0023] 3. A negative pressure sputum suction device of the present utility model. The adsorption tube section includes a first tube body part and a second tube body part. The second tube body part is connected to the main tube section, and the cross-section of the end of the first tube body part is set as an arc structure. As a preferred implementation scheme, on the basis of the above method, further, a rotatable connection fit is provided between the first tube body part and the second tube body part. With this structural arrangement, during the process that the end of the adsorption tube section sweeps across the inner wall of the human trachea in the circumferential direction, the first tube body part can rotate around the central axis of the second tube body part. In this way, the sliding friction between the first tube body part and the inner wall of the human trachea is transformed into rolling friction, thereby further reducing the risk of damage to the inner wall of the human trachea. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of a negative pressure sputum suction device;

[0025] Figure 2 is a cross-sectional structural schematic diagram of the first matching form formed between the adsorption tube section and the main tube section;

[0026] Figure 3It is a schematic cross-sectional structure diagram of the second matching form formed between the adsorption pipe section and the main pipe section.

[0027] Markings in the figure: 1 - sputum suction tube body, 2 - adsorption channel, 3 - adsorption pipe section, 4 - main pipe section, 5 - joint section, 6 - adsorption hole, 7 - pulling rope, 8 - negative pressure control pipe, 9 - fixing bolt, 10 - wire groove, 11 - first pipe body part, 12 - second pipe body part, 13 - support pipe, 14 - wing plate. Specific implementation manners

[0028] The following will describe the present utility model in detail with reference to the accompanying drawings.

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0030] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the claimed present utility model, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0031] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0034] Embodiment 1: As Figures 1 to 3As shown, a negative pressure sputum suction device described in the utility model comprises a sputum suction tube body 1, wherein an adsorption channel 2 penetrating the sputum suction tube body 1 is arranged inside the sputum suction tube body 1; the sputum suction tube body 1 comprises an adsorption tube section 3, a main tube section 4 and a joint section 5, wherein the adsorption tube section 3 and the joint section 5 are respectively arranged at two ends of the main tube section 4, and the joint section 5 is used to connect the negative pressure pipeline, and the end area of ​​the adsorption tube section 3 is provided with an adsorption hole 6 connected with the adsorption channel 2; the main tube section 4 and the joint section 5 are rotatably connected and matched; a pulling rope 7 is also arranged in the sputum suction tube body 1, wherein one end of the pulling rope 7 is connected to the adsorption tube section 3, and the other end passes through the intersection of the main tube section 4 and the joint section 5 to form a free end, and the part where the pulling rope 7 is connected to the adsorption tube section 3 and the part where the pulling rope 7 passes through are respectively located on both sides of the central axis of the sputum suction tube body 1;

[0035] The adsorption pipe section 3 and the main pipe section 4 have a first matching form and a second matching form;

[0036] In the first matching form, the central axis of the adsorption pipe section 3 coincides with the central axis of the main pipe section 4;

[0037] The pulling rope 7 is pulled to deform the junction of the adsorption tube section 3 and the main tube section 4. When the adsorption tube section 3 tilts upward and its end abuts against the upper part of the human trachea, the two form a second matching shape.

[0038] A negative pressure sputum suction device described in the present invention is adopted. After the sputum suction tube body 1 is inserted into the target depth of the human airway through the endotracheal tube, the adsorption tube section 3 and the main tube section 4 are adjusted to the second matching form. Then, during the sputum suction operation, by rotating the main tube section 4, the end of the adsorption tube section 3 can pass over the inner wall of the human trachea in the circumferential direction, thereby eliminating the "invalid adsorption area" in the upper part of the human trachea, so that the sputum is removed more thoroughly; and, in the present embodiment, when the second matching form is formed between the adsorption tube section 3 and the main tube section 4, a certain gap is formed between the adsorption hole 6 provided on the adsorption tube section 3 and the inner wall of the human trachea, thereby preventing the adsorption tube section 3 from being close to the inner wall of the human trachea under the action of negative pressure suction, causing damage to the inner wall of the human trachea, and / or difficulty in moving the adsorption tube section 3 in the human trachea, thereby improving the practicality of the present invention in actual use.

[0039] Specifically, when the present novel is initially inserted, the adsorption tube section 3 and the main tube section 4 are in the first matching form. After the end of the adsorption tube section 3 is inserted to the target depth, pull the pulling rope 7 to form the second matching form between the adsorption tube section 3 and the main tube section 4. After winding the free end of the pulling rope 7 around the main tube section 4 and fixing it, the sputum suction operation can be started. Specifically, slowly retract the device by a range of 2 cm, and synchronously rotate the main tube section 4 until the adsorption tube section 3 is withdrawn from the tracheal intubation.

[0040] Embodiment 2: As Figures 1 to 3 shown, for a negative pressure sputum suction device of the present utility model, on the basis of the above method, further, a negative pressure control tube 8 is further provided on the joint section 5. The central axis of the negative pressure control tube 8 passes through the central axis of the sputum suction tube body 1, and the negative pressure control tube 8 is communicated with the adsorption channel 2.

[0041] Specifically, in this embodiment, when the sputum suction tube body 1 is inserted, the negative pressure control tube 8 is in an open state; when performing the sputum suction operation, the operator closes the opening at the top of the negative pressure control tube 8 with his hand, and a negative pressure environment can be formed in the adsorption channel 2. With this structural setting, the use convenience of the present novel can be further improved.

[0042] As a preferred implementation scheme, on the basis of the above method, further, the central axis of the negative pressure control tube 8 is arranged perpendicular to the central axis of the sputum suction tube body 1. With this structural setting, during the sputum suction operation, sputum can be prevented from overflowing from the negative pressure control tube 8, thus further improving the practicality of the present novel in actual use.

[0043] As a preferred implementation scheme, on the basis of the above method, further, a fixing bolt 9 is provided on the negative pressure control tube 8. The fixing bolt 9 can move along the axial direction of the negative pressure control tube 8, and the free end of the pulling rope 7 is connected to the fixing bolt 9.

[0044] Specifically, in this embodiment, the fixing bolt 9 and the negative pressure control tube 8 are in a threaded connection and cooperation. When the fixing bolt 9 is rotated clockwise, it can move to the top side of the negative pressure control tube 8; when the fixing bolt 9 is rotated counterclockwise, it can move to the bottom side of the negative pressure control tube 8. With this structural setting, when the second matching form is formed between the adsorption tube section 3 and the main tube section 4, the free end of the pulling rope 7 can be fixed more conveniently and stably. In this way, the practicality of the present novel in actual use is further improved.

[0045] As a preferred embodiment, on the basis of the above method, further, a wire groove 10 is provided on the surface of the fixing bolt 9, and when the pulling rope 7 is in a tightened state, it is wound in the wire groove 10. With this structural arrangement, the stability of the fixation of the free end of the pulling rope 7 can be improved.

[0046] Embodiment 3: As Figures 1 to 3 shown, for a negative pressure sputum suction device of the present utility model, on the basis of the above method, further, the adsorption pipe section 3 includes a first pipe body part 11 and a second pipe body part 12, the second pipe body part 12 is connected to the main pipe section 4, and the cross-section of the end of the first pipe body part 11 is arranged in an arc structure. With this structural arrangement, the smoothness of the contact surface between the end of the first pipe body part 11 and the inner wall of the human trachea can be improved, and the risk of damage to the inner wall of the human trachea caused by the end of the first pipe body part 11 is reduced.

[0047] As a preferred embodiment, on the basis of the above method, further, a rotatable connection fit is provided between the first pipe body part 11 and the second pipe body part 12.

[0048] Specifically, in this embodiment, during the process that the end of the adsorption pipe section 3 sweeps across the inner wall of the human trachea along the circumferential direction, the first pipe body part 11 can rotate around the central axis of the second pipe body part 12, so that the sliding friction between the first pipe body part 11 and the inner wall of the human trachea is transformed into rolling friction, thereby further reducing the risk of damage to the inner wall of the human trachea.

[0049] Embodiment 4: As Figure 2 and Figure 3 shown, for a negative pressure sputum suction device of the present utility model, on the basis of the above method, further, a support pipe 13 is obliquely arranged at the joint part of the adsorption pipe section 3 and the main pipe section 4, and a clearance fit is formed between one end of the support pipe 13 and the inner wall of the sputum suction pipe body 1.

[0050] Specifically, in this embodiment, when a second fit form is formed between the adsorption pipe section 3 and the main pipe section 4, the support pipe 13 can be used to support the adsorption channel 2 to prevent it from collapsing. And, in this embodiment, a clearance fit is formed between one end of the support pipe 13 and the inner wall of the sputum suction pipe body 1, which can avoid the support pipe 13 affecting the bending deformation of the sputum suction pipe body 1, thereby further improving the practicality of the present invention in actual use.

[0051] As a preferred embodiment, on the basis of the above method, further, the support pipe 13 is obliquely arranged along the extending direction of the pulling rope 7, and the pulling rope 7 passes through the support pipe 13. With this structural arrangement, the structural integrity of the present invention can be improved.

[0052] Embodiment 5: As Figure 1 shown, for a negative pressure sputum aspiration device described in the present utility model, on the basis of the above method, further, a wing plate 14 is further provided at one end where the main pipe section 4 intersects with the joint section 5. With this structural arrangement, the convenience for an operator to rotate the main pipe section 4 can be improved.

[0053] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A negative pressure sputum suction device, characterized in that: The sputum suction tube body comprises an adsorption channel running through the sputum suction tube body; the sputum suction tube body comprises an adsorption tube section, a main tube section and a joint section, the adsorption tube section and the joint section are respectively arranged at two ends of the main tube section, the joint section is used to connect a negative pressure pipeline, and an end region of the adsorption tube section is provided with an adsorption hole communicating with the adsorption channel; the main tube section and the joint section are rotatably connected and matched; a pulling rope is also arranged in the sputum suction tube body, one end of the pulling rope is connected to the adsorption tube section, and the other end passes through the junction of the main tube section and the joint section to form a free end, and the part where the pulling rope is connected to the adsorption tube section and the part where the pulling rope passes through are respectively located on both sides of the central axis of the sputum suction tube body; The adsorption pipe section and the main pipe section have a first matching form and a second matching form; In the first matching state, the central axis of the adsorption pipe section coincides with the central axis of the main pipe section; The pulling rope is pulled to deform the junction of the adsorption tube section and the main tube section. When the adsorption tube section tilts upward and its end abuts against the upper part of the human trachea, the two form a second matching shape.

2. The negative pressure sputum suction device according to claim 1, characterized in that: A negative pressure control tube is also provided on the joint section, the central axis of the negative pressure control tube passes through the central axis of the sputum suction tube body, and the negative pressure control tube is communicated with the adsorption channel.

3. The negative pressure sputum suction device according to claim 2, characterized in that: The central axis of the negative pressure control tube is arranged perpendicular to the central axis of the sputum suction tube body.

4. The negative pressure sputum suction device according to claim 3, characterized in that: The negative pressure control tube is provided with a fixing bolt, and the fixing bolt can move along the axial direction of the negative pressure control tube, and the free end of the pulling rope is connected to the fixing bolt.

5. The negative pressure sputum suction device according to claim 4, characterized in that: A wire groove is provided on the surface of the fixing bolt, and when the pulling rope is in a tightened state, it is wound in the wire groove.

6. The negative pressure sputum suction device according to claim 1, characterized in that: The adsorption pipe section comprises a first pipe body portion and a second pipe body portion, the second pipe body portion is connected to the main pipe section, and a cross section of an end portion of the first pipe body portion is arranged as an arc structure.

7. The negative pressure sputum suction device according to claim 6, characterized in that: The first tube body portion and the second tube body portion are rotatably connected and matched.

8. The negative pressure sputum suction device according to any one of claims 1 to 7, characterized in that: A support tube is also obliquely arranged at the junction of the adsorption tube section and the main tube section, and a clearance fit is formed between one end of the support tube and the inner wall of the sputum suction tube body.

9. The negative pressure sputum suction device according to claim 8, characterized in that: The support tube is arranged obliquely along the extending direction of the pulling rope, and the pulling rope passes through the support tube.

10. The negative pressure sputum suction device according to claim 1, characterized in that: A wing plate is also provided at one end where the main pipe section and the joint section meet.

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