CN204563221U - A kind of nonmagnetic charging and discharging valve and the nonmagnetic endotracheal tube based on this valve - Google Patents

Abstract

The utility model provides a non-magnetic inflation and deflation valve and a non-magnetic trachea catheter based on the valve. The non-magnetic inflation and deflation valve is composed of a valve body, a valve seat fixed in the valve body and a return silicone spring. The inner wall of the valve body There is an inclined surface on the top, and a sloping shoulder is provided on the return silicone spring. Except for the sloping shoulder, there is a gap between the return silicone spring and the inner wall of the valve body; when no external force is applied, the valve seat squeezes the return silicone spring. The inclined shoulder and the inclined surface are in close contact to form a seal; when inflation and deflation are required, a gap is formed between the inclined shoulder and the inclined surface by squeezing the return silicone spring, so that the air flow channel can pass through. The non-magnetic endotracheal tube is achieved by replacing the inflation one-way valve in the endotracheal tube with a non-magnetic inflation and deflation valve. The utility model solves the magnetic problem of the existing inflatable one-way valve, and the patient can carry the non-magnetic tracheal catheter to directly perform the magnetic resonance examination, without the hidden danger of the patient's personal safety and poor magnetic resonance imaging.

Description

A non-magnetic inflation and deflation valve and a non-magnetic tracheal tube based on the valve

technical field

The utility model belongs to the field of medical appliances, in particular to a non-magnetic inflation and deflation valve and a non-magnetic trachea catheter based on the valve.

Background technique

At present, the common endotracheal tube is mainly composed of a main catheter, a fixed balloon, an inflatable connecting tube, an indicating balloon, an inflatable one-way valve and a connector. When using the inflatable one-way valve to inflate, the gas passes through the indicating balloon and the inflation connecting tube in turn, and finally reaches the fixed airbag. The fixation balloon serves to secure the endotracheal tube in the trachea. But, all contain metal spring in the inflation one-way valve on the endotracheal tube that generally uses at home and abroad, and metal spring has magnetism. Patients should not carry magnetic objects during MRI examinations. If the patient has a tracheal tube and needs to undergo MRI examination, the tube will be temporarily extubated or the inflation check valve will be cut off for the MRI examination, which will cause hidden dangers to the patient's personal safety. Magnetic inflatable one-way valve and direct magnetic resonance examination will directly affect the imaging effect, especially the imaging effect of head, neck and chest magnetic resonance examination, resulting in inaccurate examination results.

Utility model content

The purpose of the utility model is to provide a non-magnetic inflation and deflation valve and a non-magnetic tracheal catheter based on the valve, which can be directly used for magnetic resonance examination, and there are no personal safety hazards and problems affecting the imaging effect.

In order to achieve the above object, the technical solution adopted by the utility model is:

A non-magnetic filling and deflation valve, comprising a valve body made of hard plastic material, on which a through hole is opened along the length direction of the valve body, and a slope is provided on the middle part of the inner wall of the valve body, and the front end of the valve body has the same size as the filling and discharging valve. The size of the gas port of the gas equipment is suitable; the tail of the valve body is equipped with a valve seat made of hard plastic material, and the valve seat is provided with a through vent hole; the return silicone spring capable of elastic deformation is fixed in the valve body through the valve seat, There is a sloping shoulder on the middle part of the return silicone spring, and there is a gap between the rest of the return silicone spring except the slant shoulder and the inner wall of the valve body; in the state of no external force, the valve seat is squeezed back Silicone spring, at this time, the inclined shoulder and the inclined surface are in close contact to form a sealing structure; in the state of inflation and deflation, the air port of the inflation and deflation equipment extends into the front end of the valve body to squeeze the silicone spring back, and at this time, a gap is formed between the inclined shoulder and the inclined surface .

The valve seat is composed of a snap ring and a number of support plates. The snap ring is fixed on the inner wall of the valve body. One end of all the support plates is fixed on the snap ring, and the other end meets at the center of the snap ring. Between the support plate and the snap ring Ventilation holes are formed between them.

The bottom end of the return silicone spring is provided with a hole.

The support plate is provided with a step surface, and the bottom end of the return silicone spring is stuck on the step surface.

The front end of the return silicone spring is provided with a groove, and the front end of the return silicone spring is located in the front end of the valve body.

A card slot is provided on the inner wall of the valve body, and the valve seat is locked in the card slot.

The inner wall of the valve body is uniformly provided with a plurality of first strip-shaped protrusions, and the length direction of the first strip-shaped protrusions is the same as the length direction of the valve body.

A plurality of second strip-shaped protrusions are evenly arranged on the outer wall of the return silicone spring, and the length direction of the second strip-shaped protrusions is the same as that of the return silicone spring.

The cross section of the valve body is circular, and the cross section of the return silicone spring is circular or circular.

A non-magnetic tracheal catheter based on the non-magnetic inflation and deflation valve, including a main catheter, the top of the main catheter is provided with a joint, the lower part of the main catheter is provided with a fixed air bag, and the fixed air bag is connected to the indicating balloon through an inflatable connecting tube On, indicating that there is a non-magnetic inflation and deflation valve on the balloon to inflate and deflate the fixed airbag.

Compared with the prior art, the beneficial effects of the utility model are:

The non-magnetic filling and deflation valve provided by the utility model uses a return silicone spring capable of elastic deformation to replace the existing metal spring. The shoulder forms a seal with the inclined surface on the inner wall of the valve, blocking the entire air flow channel and preventing the flow of air; A gap is formed between the inclined surfaces of the body, and the entire airflow channel is connected, so that it can be easily inflated and deflated. When the external force is removed, the return silicone spring returns to its original shape and continues to achieve the sealing effect. The non-magnetic filling and deflation valve provided by the utility model well solves the magnetic problem caused by the use of metal springs in the existing inflation one-way valve, and replaces the existing inflation one-way valve with the non-magnetic inflation and deflation valve. After the valve is installed on the endotracheal tube, the patient can carry the endotracheal tube directly for magnetic resonance examination, without potential safety hazards for the patient and poor magnetic resonance imaging, and avoiding temporary extubation or cutting off the tube for magnetic resonance examination Risks posed by inflated check valves.

Further, in the non-magnetic inflation and deflation valve provided by the utility model, the clasp on the valve seat can be stuck in the slot on the inner wall of the valve, so that the valve seat can be easily fixed in the valve body; the support of the valve seat A vent hole is formed between the plate and the clasp, so that the air can pass through the valve seat; the bottom end of the return silicone spring is open, on the one hand, it is convenient for it to be stuck on the step surface of the support plate, and it is beneficial for the return silicone spring to be on the valve seat. The fixation in the body is more convenient and more conducive to the deformation of the return silicone spring when it is subjected to external force, so that the airflow channel is easier to penetrate; the front end of the return silicone spring is provided with a groove, which can be directly placed in the groove with a pointed object Apply force to deform the return silicone spring and open the gas channel; the first strip-shaped protrusion on the inner wall of the valve and the second strip-shaped protrusion on the outer wall of the return silicone spring are to ensure that the return silicone spring is in contact with the valve. Sufficient gaps can be formed between the internal walls, and when the return silicone spring is deformed, there is also a gap between the two to allow airflow to pass through, and by changing the size and number of the second strip-shaped protrusions on the outer wall of the return silicone spring, It can also play the effect of adjusting the degree of difficulty of deformation of the return silicone spring.

The non-magnetic tracheal catheter provided by the utility model replaces the existing inflatable one-way valve with the above-mentioned non-magnetic inflation and deflation valve, which solves the magnetic problem of the inflatable one-way valve, and the patient can carry the non-magnetic tracheal catheter directly for magnetic resonance Inspection, there will be no hidden dangers to the patient's personal safety and poor magnetic resonance imaging, and it also avoids the risks caused by temporary extubation or cutting off the inflation check valve for magnetic resonance examination.

Description of drawings

Fig. 1 is the structural representation of the non-magnetic filling and deflation valve provided by the utility model;

Fig. 2 is the structural representation of the longitudinal section of valve body;

Fig. 3 is a structural schematic diagram of a return silicone spring;

Fig. 4 is the structural representation of valve seat, and wherein (a) is main view, and (b) is the side view of (a);

Fig. 5 is the structural representation of the non-magnetic endotracheal tube provided by the utility model;

Among them: 1 is the valve body, 2 is the return silicone spring, 3 is the valve seat, 4 is the slope, 5 is the card slot, 6 is the first strip-shaped protrusion, 7 is the inclined shoulder, 8 is the second strip-shaped protrusion , 9 is a groove, 10 is a clasp, 11 is a support plate, 12 is a vent hole, 13 is an indicator balloon, 14 is an inflatable connecting tube, 15 is a fixed air bag, 16 is a main catheter, 17 is a joint, 18 is a through hole Holes, 19 are holes, and 20 are stepped surfaces.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1 to Fig. 4, the non-magnetic inflation and deflation valve provided by the utility model includes a valve body 1 made of hard plastic material, a valve seat 3 made of hard plastic material located in the valve body 1 and a valve seat capable of elastic deformation. Return the silicone spring 2. A through hole 18 is opened on the valve body 1 along its length, and the valve seat 3 and the return silicone spring 2 are installed in the through hole 18 . The cross section of the valve body 1 is circular, the middle part of the inner wall of the valve body 1 is provided with a slope 4, and the inner wall of the valve body 1 is evenly provided with a plurality of first strip-shaped protrusions 6, and the first strip-shaped protrusions The length direction of 6 is the same as the length direction of valve body 1, and the inwall of valve body 1 afterbody is provided with draw-in groove 5, and the front end size of valve body 1 adapts to the air port size of the inflation and deflation equipment. The valve seat 3 is composed of a snap ring 10 and a number of support plates 11, the snap ring 10 is stuck on the slot 5, one end of all the support plates 11 is fixed on the snap ring 10, and the other end meets at the center of the snap ring 10, the support plate 11 is provided with a stepped surface 20 , and a through air hole 12 is formed between the support plate 11 and the clasp 10 . The return silicone spring 2 is fixed in the valve body 1 through the valve seat 3. The cross section of the return silicone spring 2 is circular or circular. The bottom end of the return silicone spring 2 is provided with a hole 19 and is stuck on the step surface 20 Above, the front end of the return silicone spring 2 is provided with a groove 9, and the front end of the return silicone spring 2 is located in the front end of the valve body 1, and the outer wall of the return silicone spring 2 is evenly provided with a number of second strip-shaped protrusions 8, and the length direction of the second strip protrusion 8 is the same as the length direction of the return silicone spring 2, and the middle part of the return silicone spring 2 is provided with a slanted shoulder 7, and the return silicone spring 2 is except for the slant shoulder 7 A gap is formed between the remaining part of the valve body and the inner wall of the valve body 1; in the state where no external force is applied, the valve seat 3 is squeezed back to the silicone spring 2, and the inclined shoulder 7 is in close contact with the inclined surface 4 to form a sealing structure; In the deflated state, the air port of the inflation and deflation device extends into the front end of the valve body 1 to squeeze the silicone spring 2 back, and at this time, a gap is formed between the inclined shoulder 7 and the inclined surface 4, thereby forming a through air flow channel.

Referring to Fig. 5, the non-magnetic endotracheal catheter provided by the utility model includes a main catheter 16, the top of the main catheter 16 is provided with a joint 17, and the lower part of the main catheter 16 is provided with a fixed air bag 15, and the fixed air bag 15 communicates with the indicator through the inflatable connecting pipe 14. The balloons 13 are connected, indicating that the balloon 13 is provided with the above-mentioned non-magnetic inflation and deflation valve for inflating and deflated the fixed airbag 15 .

In the utility model, the elasticity of the silica gel is used to replace the elasticity of the metal spring, and a non-magnetic non-magnetic filling and deflation valve without metal is produced. One-way valves are equivalent. The non-magnetic tracheal catheter provided by the utility model uses the above-mentioned non-magnetic filling and deflation valve to replace the existing magnetic one-way valve containing a metal spring. The use of non-magnetic inflation and deflation valves makes the entire non-magnetic tracheal tube contain no magnetic objects, so the non-magnetic tracheal tube provided by the utility model can be directly used for magnetic resonance examination, and there are no hidden dangers to the personal safety of patients without the tracheal tube and magnetic resonance imaging. It also avoids the risks caused by temporary extubation or cutting off the inflation check valve for MRI examination.

The working principle of the non-magnetic filling and deflation valve provided by the utility model is: under the condition of no external force, the valve seat 3 squeezes the return silicone spring 2, so that the oblique shoulder 7 of the return silicone spring 2 is tightly squeezed on the valve On the slope 4 of the inner wall of the body 1, a seal is formed to prevent air leakage after inflation; when the external force squeezes it from the front end of the return silicone spring 2, the slope shoulder 7 of the return silicone spring 2 and the slope of the valve body 1 4 is gradually separated to form a gap. Since there is a vent hole 12 on the valve seat 3, and there is a gap between the rest of the return silicone spring 2 and the inner wall of the valve body 1, a through air flow channel is formed. It can flow through the airflow channel, bidirectional flow, and realize the inflation and deflation operation.

When using the non-magnetic tracheal catheter provided by the utility model, insert the main catheter 16 into the patient's trachea, insert the air port of the inflation and deflation device at the front end of the valve body 1 and squeeze the silicone spring 2 back to form an air flow channel. Inflate the fixed airbag 15 at the same time, so that the main conduit 16 is fixed in the trachea. After the inflation is completed, pull out the air port of the inflation and deflation device, and return the silicone spring 2 to restore the seal with the valve body 1 to prevent air leakage. Take out the main pipe 16, insert the air port of the inflation and deflation device on the front end of the valve body 1 and squeeze the return silicone spring 2 to form an air flow channel. Since the entire non-magnetic tracheal tube does not contain magnetic objects, the non-magnetic tracheal tube provided by the utility model can be directly used for magnetic resonance examinations, and the potential safety hazards of patients without tracheal tubes and poor magnetic resonance imaging are also avoided. Perform an MRI to examine the risks posed by temporary extubation or clipping of the inflation check valve.

In addition, the existing magnetic one-way valves containing metal springs in medical products with fixed airbags, such as tracheotomy sleeves, which are inserted into the human body, can also be used instead of the non-magnetic inflation and deflation valves provided by the utility model, thereby Make it convenient for patients with these medical supplies to undergo MRI examinations.

The specific content described above in conjunction with the accompanying drawings is only schematic and does not constitute a limit to the scope of protection of the utility model. Researchers in the field are based on the non-magnetic inflation and deflation valve and the non-magnetic tracheal catheter provided by the utility model. Various modifications or deformations without creative efforts are still within the protection scope of the present utility model.

Claims (10)

1. A non-magnetic filling and deflation valve is characterized in that: the valve body (1) comprising hard plastic material is provided with a through hole (18) along its length direction on the valve body (1), and the valve body (1) ) is provided with a bevel (4) on the middle part of the inner wall, and the front end size of the valve body (1) is adapted to the gas port size of the inflation and deflation equipment; the valve seat ( 3), the valve seat (3) is provided with a through vent hole (12); the elastically deformable return silicone spring (2) is fixed in the valve body (1) through the valve seat (3), and the return silicone spring The middle part of (2) is provided with a slanted shoulder (7), and a gap is formed between the rest of the return silicone spring (2) except the slanted shoulder (7) and the inner wall of the valve body (1); In the applied state, the valve seat (3) squeezes back to the silicone spring (2), and at this time, the inclined shoulder (7) is in close contact with the inclined surface (4) to form a sealing structure; The air port extends into the front end of the valve body (1) to squeeze the return silicone spring (2), and at this time a gap is formed between the inclined shoulder (7) and the inclined surface (4). 2. The non-magnetic inflation and deflation valve according to claim 1, characterized in that: the valve seat (3) is composed of a snap ring (10) and several support plates (11), and the snap ring (10) is fixed on the valve On the inner wall of the body (1), one end of all support plates (11) is fixed on the snap ring (10), and the other end meets at the center of the snap ring (10). Air vents (12) are formed between them. 3. The non-magnetic inflation and deflation valve according to claim 2, characterized in that: the bottom end of the return silicone spring (2) is provided with a hole (19). 4. The non-magnetic inflation and deflation valve according to claim 3, characterized in that: the support plate (11) is provided with a step surface (20), and the bottom end of the return silicone spring (2) is stuck on the step surface (20) on. 5. The non-magnetic inflation and deflation valve according to claim 1, characterized in that: the front end of the return silicone spring (2) is provided with a groove (9), and the front end of the return silicone spring (2) is located on the valve body (1) inside the front end. 6. The non-magnetic inflation and deflation valve according to claim 1, characterized in that: a slot (5) is opened on the inner wall of the valve body (1), and the valve seat (3) is stuck in the slot (5) Inside. 7. The non-magnetic inflation and deflation valve according to claim 1, characterized in that: the inner wall of the valve body (1) is evenly provided with a number of first strip-shaped protrusions (6), and the first strip-shaped The length direction of the protrusion (6) is the same as the length direction of the valve body (1). 8. The non-magnetic filling and deflation valve according to claim 1, characterized in that: the outer wall of the return silicone spring (2) is evenly provided with a number of second strip-shaped protrusions (8), and the second The length direction of the strip protrusion (8) is the same as the length direction of the return silicone spring (2). 9. The non-magnetic inflation and deflation valve according to claim 1, characterized in that: the cross-section of the valve body (1) is circular, and the cross-section of the return silicone spring (2) is circular or round ring. 10. A non-magnetic tracheal catheter based on the non-magnetic inflation and deflation valve according to any one of claims 1-9, characterized in that: it comprises a main conduit (16), and the top end of the main conduit (16) is provided with a joint (17), the lower part of the main conduit (16) is provided with a fixed air bag (15), the fixed air bag (15) communicates with the indicating balloon (13) through the inflatable connecting tube (14), and the indicating balloon (13) is provided with a The non-magnetic filling and deflation valve for filling and deflation of the fixed air bag (15).