CN112972852A - Subglottic suction device for tracheal catheter - Google Patents
Subglottic suction device for tracheal catheter Download PDFInfo
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- CN112972852A CN112972852A CN202110161426.5A CN202110161426A CN112972852A CN 112972852 A CN112972852 A CN 112972852A CN 202110161426 A CN202110161426 A CN 202110161426A CN 112972852 A CN112972852 A CN 112972852A
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- Prior art keywords
- suction
- tube
- main body
- lead
- air bag
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0434—Cuffs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0463—Tracheal tubes combined with suction tubes, catheters or the like; Outside connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a tracheal catheter subglottal suction device, relates to the field of medical instruments, and provides a tracheal catheter subglottal suction device which can suck more thoroughly and timely. The endotracheal tube subglottic suction device comprises an endotracheal tube and a suction device, wherein the endotracheal tube comprises a tube main body, an air bag, a swing tube, a suction tube, a liquid sensing device and a conducting wire; the rear end of the swing pipe is connected with the catheter main body, the side surface of the swing pipe is connected with the air bag, the swing pipe can move along with the air bag, the swing pipe is provided with a suction hole, and an orifice of the suction hole is positioned on the side surface of the front part of the swing pipe; the suction tube is connected with the catheter main body and communicated with the suction hole; the rear end of the catheter main body is provided with a direction mark; the liquid sensing device is positioned behind the air bag and connected with the catheter main body, the liquid sensing device and the swing pipe are arranged in the same direction on the circumference of the catheter main body, and the conducting wire is connected with the liquid sensing device; the lead and the suction tube are both connected with a suction device; the liquid induction device controls the suction device to start and stop by signals.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a subglottic suction device for a tracheal catheter.
Background
An endotracheal tube is a medical device that is inserted into the trachea of a patient to create a temporary artificial breathing pathway for the patient, particularly for patients who are unable to breathe spontaneously. As shown in fig. 1, the conventional endotracheal tube includes a tube main body, a balloon and an inflation tube. When in use, the catheter main body is inserted into the trachea, and the air sac is inflated through the inflation tube, so that the air sac is expanded and supported on the wall of the trachea.
The establishment of the artificial airway destroys the normal anatomical structure and physiological function of the respiratory tract, so that the swallowing protection capability of the airway is limited, secretions are increased, and the upper airway secretions gather behind the tracheal catheter air bag to cause bacterial reproduction; if there is a local gap between the balloon and the tracheal wall, secretions may leak forward into the lungs, causing infection.
In order to be able to suck off secretions, endotracheal tubes with subglottal suction function have emerged. An existing endotracheal tube with subglottic suction function is shown in fig. 1 and comprises a suction tube, wherein a suction hole is formed in the rear portion of an air bag on a tube main body, and the suction tube is communicated with the suction hole. The suction device is connected with the suction tube, and the negative pressure provided by the suction device can suck the secretion behind the air bag through the suction hole and the suction tube. Such endotracheal tubes are disclosed in patent nos. ZL201520365536.3, ZL201920177323.6, etc.
However, as shown in fig. 1, because of the supporting function of the air bag, the catheter main body is spaced from the tracheal wall, and when the patient lies down, the secretion below the catheter main body, i.e. the secretion at a in fig. 1, is difficult to be sucked out because the secretion cannot go through the suction hole. When the patient lies half-way or sits up, because of the distance between the suction hole and the air bag, the secretion below the suction hole is difficult to be sucked out because the secretion does not go over the suction hole. This results in the inability of the prior art endotracheal tube to more thoroughly aspirate post-balloon secretions.
The suction device currently performs suction by means of continuous suction or intermittent suction. The continuous suction causes the mucous membrane of the airway to be dry and easy to bleed; intermittent suction cannot ensure timely suction of secretion.
In addition, subglottic suction is currently realized by mostly depending on negative pressure provided by a hospital central negative pressure device. Due to the occupied negative pressure interface, the use of other instruments needing negative pressure, such as sputum suction, can be influenced. This is true of the subglottal suctioning devices disclosed in patents ZL201320779682.1, ZL201720678077.3, and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a subglottic suction device for the tracheal catheter, which can suck more thoroughly and timely.
The technical scheme adopted for solving the problems is as follows: the subglottic suction device of the tracheal catheter comprises a tracheal catheter, and the tracheal catheter comprises a catheter main body and an air bag arranged on the catheter main body; also comprises a suction device; the tracheal catheter comprises a swinging pipe, a suction pipe, a liquid induction device and a lead; the rear end of the swing pipe is connected with the catheter main body, the side face of the swing pipe is connected with the air bag, the swing pipe can move along with the air bag, the swing pipe is completely positioned behind the air bag when the air bag is inflated, the swing pipe is provided with a suction hole, and an orifice of the suction hole is positioned on the side face of the front part of the swing pipe; the suction tube is connected with the catheter main body and communicated with the suction hole; the rear end of the catheter main body is provided with a direction mark; the liquid sensing device is positioned behind the air bag and connected with the catheter main body, the liquid sensing device and the swing pipe are arranged in the same direction on the circumference of the catheter main body, and the conducting wire is connected with the liquid sensing device; the lead and the suction tube are both connected with a suction device; the liquid induction device controls the suction device to start and stop by signals.
Further, the method comprises the following steps: the liquid induction device comprises a positive electrode and a negative electrode, the leads comprise a positive lead and a negative lead, the positive lead is connected with the positive electrode, and the negative lead is connected with the negative electrode.
Further, the method comprises the following steps: when the liquid sensing device senses liquid, the suction device is started and operates for 3-5 seconds.
Further, the method comprises the following steps: the suction device comprises a device frame, a motor, a screw rod, a guide rod, a cross beam, a piston rod, a suction cylinder, a piston and an electric control device; the lead screw is vertically arranged and connected with the device frame, the lead screw can rotate, and the guide rod is parallel to the lead screw and connected with the device frame; the cross beam is horizontally arranged, the cross beam is in threaded connection with the lead screw, the cross beam is sleeved on the guide rod and matched with the guide rod, and the piston rod is vertically arranged and connected with the cross beam; the suction cylinder is detachably connected with the device frame, the piston is matched with the suction cylinder and detachably connected with the piston rod, and the piston is provided with a lead-in pipe; the motor is arranged on the device frame and connected with the lead screw; the electric control device is arranged on the device frame; the suction tube is connected with the leading-in tube, and the lead is connected with the electric control device; the electric control device controls the motor to operate according to the signal of the liquid sensing device.
Further, the method comprises the following steps: the suction cylinder is in threaded connection with the device frame, and the piston is in threaded connection with the piston rod.
The invention has the beneficial effects that: 1. as shown in fig. 3 and 4, the tracheal tube is inserted into the trachea with the proper orientation, such that the swinging tube and the liquid sensing device are both facing the back of the person. Then, the air bag is inflated, and the swinging pipe swings to face the back of the human body along with the expansion of the air bag. When the patient lies down, the mouth of the suction hole is close to the lowest part of the inner space of the trachea, so that the secretion can be sucked out more thoroughly. When the patient lies or sits up, the suction hole opening can be flush with the air bag and is basically positioned at the lowest position above the air bag, and secretion can be sucked out more thoroughly. Therefore, the invention has the beneficial effect of thoroughly attracting secretion.
2. The liquid sensing device controls the suction device to start and stop by signals, and the liquid sensing device senses secretion, namely controls the suction device to start suction, so that unnecessary long-time suction is avoided compared with the existing continuous suction, and the drying of the airway mucosa is not caused. Compared with the existing intermittent suction, the suction is more timely.
Drawings
FIG. 1 is a view showing a state of use of a conventional endotracheal tube;
FIG. 2 is a view of the subglottic suction device of the endotracheal tube;
FIG. 3 is a view of the structure of the endotracheal tube;
fig. 4 is an enlarged view at B of fig. 3;
FIG. 5 is a body view of section C-C of FIG. 4;
FIG. 6 is a view showing the construction of the suction device;
labeled as: the tracheal catheter comprises a tracheal catheter 1, a catheter body 11, a direction mark 111, an air bag 12, an inflation tube 13, a suction tube 14, a swing tube 15, a suction hole 151, a liquid sensing device 16, a lead wire 17, a suction device 2, a device frame 21, a lead screw 22, a guide rod 23, a cross beam 24, a piston rod 25, a motor 26, an electric control device 27, a suction cylinder 28, a piston 29 and an introduction tube 291.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 2 to 5, the endotracheal tube subglottic suction apparatus includes an endotracheal tube 1, the endotracheal tube 1 including a tube main body 11 and a balloon 12 provided on the tube main body 11; the method is characterized in that: comprises a suction device 2; the tracheal catheter 1 comprises a swinging tube 15, a suction tube 14, a liquid induction device 16 and a conducting wire 17; the rear end of the swing pipe 15 is connected with the catheter main body 11, the side surface of the swing pipe 15 is connected with the air bag 12, the swing pipe 15 can move along with the air bag 12, the swing pipe 15 is completely positioned behind the air bag 12 when the air bag 12 is inflated, the swing pipe 15 is provided with a suction hole 151, and the opening of the suction hole 151 is positioned on the side surface of the front part of the swing pipe 15; the suction tube 14 is connected to the catheter body 11 and communicates with the suction hole 151; the rear end of the catheter main body 11 is provided with a direction mark 111; the liquid sensing device 16 is positioned behind the air bag 12 and connected with the catheter main body 11, the liquid sensing device 16 and the swing pipe 15 are arranged in the same direction in the circumferential direction of the catheter main body 11, and the lead 17 is connected with the liquid sensing device 16; the lead 17 and the suction tube 14 are both connected with the suction device 2; the liquid sensing device 16 controls the suction device 2 to start and stop by signals.
As shown in fig. 3 and 4, the endotracheal tube 1 is inserted into the trachea with the adjusted orientation such that the swinging tube 15 and the liquid sensing device 16 are both directed toward the back of the human body. Then, the airbag 12 is inflated, and the swing pipe 15 swings toward the back of the human body as the airbag 12 is inflated. When the patient lies down, the suction hole 151 is adjacent to the lowest part of the inner space of the trachea, so that the secretion can be sucked out more thoroughly. When the patient is lying or sitting, the suction holes 151 can be flush with the air bag 12, i.e. located at the lowest position above the air bag 12, and can suck out the secretion more thoroughly.
The liquid induction device 16 controls the suction device 2 to start and stop by signals, namely the liquid induction device 16 induces secretion to control the suction device 2 to start suction. Compared with the existing continuous suction, unnecessary long-time suction is avoided, and therefore drying of airway mucosa is not caused. Compared with the existing intermittent suction, the suction is more timely.
The endotracheal tube 1 should conventionally include an inflation tube 13 for inflating the balloon 12. The swing pipe 15 may be made of silicone rubber, and the swing pipe 15 has flexibility and is laterally connected to the airbag 12 so that the swing pipe 15 can move with the airbag 12. When the air bag 12 is inflated and expanded, the swinging pipe 15 faces the back of the human body; when the air bag 12 is not inflated and contracted, the swing pipe 15 faces to the front of the tracheal catheter 1, and the insertion of the tracheal catheter 1 into the airway is not influenced. The meaning of "the swinging tube 15 is located completely behind the balloon 12 when the balloon 12 is inflated" is to avoid that the swinging tube 15 touches the airway wall of the patient. The suction tube 14 and the guide wire 17 are shown in detail in fig. 3 and 4, with the front portion located inside the catheter body 11 and the rear portion passing through the catheter body 11 so as to extend outside the catheter body 11 for connection to the suction device 2. The direction mark 111 is used for marking the direction of the swing pipe 15 and the liquid sensing device 16 after insertion, the direction mark 111 may be a red line or an arrow, and the like, and the direction mark 111 in the circumferential direction of the catheter main body 11 may be in the same direction as the liquid sensing device 16 and the swing pipe 15. In this way, the endotracheal tube 1 is inserted into the airway with the directional marker 111 facing the back of the person, and the liquid sensing device 16 and the swinging tube 15 also facing the back of the person.
The specific design of the liquid sensing device 16 can be varied, for example, with reference to existing water leak sensor designs. As shown in fig. 4 and 5, the liquid sensing device 16 may include a positive electrode and a negative electrode, and the lead 17 includes a positive lead connected to the positive electrode and a negative lead connected to the negative electrode. The liquid sensing device 16 has a simple structure and occupies a small space.
The upper airway secretion can conduct electricity, so that the positive electrode and the negative electrode are conducted when the secretion submerges the liquid sensing device 16, and the positive electrode and the negative electrode are not conducted when the secretion does not submerge the liquid sensing device 16, so that secretion sensing is realized.
In the case of the liquid sensor 16, when the liquid sensor 16 senses liquid, the suction device 2 is started, and when the liquid sensor 16 does not sense liquid, the suction device 2 is stopped, and the liquid sensor 16 is positioned higher than the opening of the suction hole 151, so that the suction device 2 can only suck the secretion which has fallen over the liquid sensor 16, but cannot suck the secretion below the liquid sensor 16. Therefore, when the liquid sensing device 16 senses the liquid, the suction device 2 is started and operates for 3-5 seconds. Thus, the secretion can be completely attracted. Can be realized by arranging a corresponding time delay control structure on the suction device 2.
The suction device 2 of the present invention is preferably as shown in fig. 6, the suction device 2 includes a device frame 21, a motor 26, a lead screw 22, a guide rod 23, a cross beam 24, a piston rod 25, a suction cylinder 28, a piston 29 and an electric control device 27; the lead screw 22 is vertically arranged and connected with the device frame 21, the lead screw 22 can rotate, and the guide rod 23 is parallel to the lead screw 22 and connected with the device frame 21; the cross beam 24 is horizontally arranged, the cross beam 24 is in threaded connection with the lead screw 22, the cross beam 24 is sleeved on the guide rod 23 and matched with the guide rod 23, and the piston rod 25 is vertically arranged and connected with the cross beam 24; the suction cylinder 28 is detachably connected with the device frame 21, the piston 29 is matched with the suction cylinder 28 and detachably connected with the piston rod 25, and the piston 29 is provided with an introducing pipe 291; the motor 26 is arranged on the device frame 21 and connected with the lead screw 22; the electric control device 27 is arranged on the device frame 21; the suction tube 14 is connected with the lead-in tube 291, and the lead 17 is connected with the electric control device 27; the electric control device 27 controls the operation of the motor 26 according to the signal of the liquid sensing device 16.
The electronic control unit 27 receives the signal from the liquid sensing device 16 and controls the operation of the motor 26. The motor 26 drives the lead screw 22 to rotate, and the lead screw 22 drives the cross beam 24 and the piston rod 25 to move upwards and drives the piston 29 to move upwards. The suction tube 28 is connected to the device frame 21 and cannot move upwards, the piston 29 moves upwards to generate a suction effect, and secretion enters the suction tube 28 through the suction hole 151, the suction tube 14 and the introduction tube 291 to be collected.
The introduction pipe 291 is a pipe passing through the piston 29, and functions as an air intake in addition to the function of introducing secretions. When the piston 29 moves to the upper end of the suction cylinder 28, the motor 26 is manually controlled to operate, and the piston 29 is pulled out, so that the suction cylinder 28 can be detached and the secretion can be poured out. At this time, the inlet pipe 291 functions as an air inlet to prevent the piston 29 from being pulled out by the air pressure.
The suction device 2 has simple structure and does not occupy the central negative pressure interface of the hospital.
The suction cylinder 28 and the piston 29 are contaminated with secretions and can be reused by the same patient after cleaning. The suction cylinder 28 and the piston 29 need to be replaced for different patients. Therefore, the suction cylinder 28 is detachably connected to the apparatus frame 21, and the piston 29 is detachably connected to the piston rod 25. Preferably, the suction cylinder 28 is screwed to the apparatus frame 21, and the piston 29 is screwed to the piston rod 25.
Claims (5)
1. The subglottic suction device of the tracheal catheter comprises the tracheal catheter (1), wherein the tracheal catheter (1) comprises a catheter main body (11) and an air bag (12) arranged on the catheter main body (11); the method is characterized in that: comprises a suction device (2); the tracheal catheter (1) comprises a swinging tube (15), a suction tube (14), a liquid induction device (16) and a lead (17); the rear end of the swing pipe (15) is connected with the catheter main body (11), the side surface of the swing pipe (15) is connected with the air bag (12), the swing pipe (15) can move along with the air bag (12), the swing pipe (15) is completely positioned behind the air bag (12) when the air bag (12) is expanded, the swing pipe (15) is provided with a suction hole (151), and the opening of the suction hole (151) is positioned on the side surface of the front part of the swing pipe (15); the suction tube (14) is connected with the catheter main body (11) and is communicated with the suction hole (151); the rear end of the catheter main body (11) is provided with a direction mark (111); the liquid sensing device (16) is positioned behind the air bag (12) and is connected with the catheter main body (11), the liquid sensing device (16) is arranged in the circumferential direction of the catheter main body (11) in the same direction as the swinging pipe (15), and the conducting wire (17) is connected with the liquid sensing device (16); the lead (17) and the suction tube (14) are both connected with the suction device (2); the liquid induction device (16) controls the suction device (2) to start and stop by signals.
2. The endotracheal tube subglottic suction device according to claim 1, characterized in that: the liquid induction device (16) comprises an anode electrode and a cathode electrode, the lead (17) comprises an anode lead and a cathode lead, the anode lead is connected with the anode electrode, and the cathode lead is connected with the cathode electrode.
3. The endotracheal tube subglottic suction device according to claim 2, characterized in that: when the liquid sensing device (16) senses the liquid, the suction device (2) is started and operates for 3-5 seconds.
4. The endotracheal tube subglottic suction device according to any one of claims 1 to 3, characterized in that: the suction device (2) comprises a device frame (21), a motor (26), a lead screw (22), a guide rod (23), a cross beam (24), a piston rod (25), a suction cylinder (28), a piston (29) and an electric control device (27); the lead screw (22) is vertically arranged and connected with the device frame (21), the lead screw (22) can rotate, and the guide rod (23) is parallel to the lead screw (22) and connected with the device frame (21); the cross beam (24) is horizontally arranged, the cross beam (24) is in threaded connection with the lead screw (22), the cross beam (24) is sleeved on the guide rod (23) and matched with the guide rod (23), and the piston rod (25) is vertically arranged and connected with the cross beam (24); the suction tube (28) is detachably connected with the device frame (21), the piston (29) is matched with the suction tube (28) and detachably connected with the piston rod (25), and the piston (29) is provided with an introducing pipe (291); the motor (26) is arranged on the device frame (21) and is connected with the screw rod (22); the electric control device (27) is arranged on the device frame (21); the suction tube (14) is connected with the lead-in tube (291), and the lead (17) is connected with the electric control device (27); the electric control device (27) controls the motor (26) to operate according to the signal of the liquid sensing device (16).
5. The endotracheal tube subglottic suction device according to claim 4, characterized in that: the suction tube (28) is in threaded connection with the device frame (21), and the piston (29) is in threaded connection with the piston rod (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110161426.5A CN112972852B (en) | 2021-02-05 | 2021-02-05 | Subglottic suction device of tracheal catheter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110161426.5A CN112972852B (en) | 2021-02-05 | 2021-02-05 | Subglottic suction device of tracheal catheter |
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| CN112972852A true CN112972852A (en) | 2021-06-18 |
| CN112972852B CN112972852B (en) | 2023-06-23 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112972852B (en) | 2023-06-23 |
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