CN107224342B - One-way valve, intragastric balloon weight losing device and system - Google Patents

Abstract

A one-way valve, intragastric balloon weight-losing device and system relate to the field of medical appliances. The check valve includes a first valve body and a second valve body. The first valve body is provided with a liquid inlet part, a liquid outlet part and a first fluid channel. The second valve body includes a first end, a second end, and a second fluid passageway. The first fluid passage communicates with the second fluid passage. The first end part is sleeved on the liquid outlet part. The second end is configured to contract and close the second fluid passage under pressure directed toward an axis of the second valve body. Therefore, the one-way valve has two states of circulation and sealing, and has high tightness and use flexibility. The intragastric balloon weight reducing device and the intragastric balloon weight reducing system comprise the one-way valve, the second fluid channel can be tightly closed or opened according to the fluid pressure by the one-way valve, the fluid unidirectional flow is controlled, and the phenomenon that the fluid flows backwards in the ball body due to the large pressure in the ball body is reduced, so that the intragastric balloon weight reducing device and the intragastric balloon weight reducing system have high use safety.

Description

One-way valve, intragastric balloon weight losing device and system

Technical Field

The invention relates to the field of medical equipment, in particular to a one-way valve, an intragastric balloon weight-losing device and a system.

Background

Gastric water ball was first used in europe in 1990, and after 2000, it entered asia, japan, hong kong, china and taiwan, all with related medical institutions, and improved popularization was being made. The operation comprises placing a water balloon without water into stomach via gastroscope, injecting physiological saline into the water balloon, occupying stomach space, reducing food intake, and taking out after 6 months.

According to the teaching of experts in domestic multi-hospital, in the process of placing the ball in the stomach of a patient, due to peristalsis of the stomach or collision of hard objects, the condition that liquid in the ball leaks under the condition that the ball is subjected to external force occurs, when the liquid in the ball is reduced to a certain amount, the ball can enter the intestinal tract through the pylorus when the ball is reduced to a certain volume, intestinal obstruction is caused, discomfort is brought to the patient, and even life danger is caused.

Disclosure of Invention

The invention provides a one-way valve, and aims to solve the problem of low use flexibility.

The invention provides a weight-losing device of an intragastric balloon, which aims to improve the phenomenon of fluid backflow caused by large pressure in a sphere.

The invention provides a weight-losing system of an intragastric balloon, which aims to solve the problems of backflow of fluid and inconvenient use caused by high pressure in a sphere.

The invention is realized in the following way:

a one-way valve comprises a first valve body, wherein the first valve body comprises a liquid inlet part, a liquid outlet part and a first fluid channel which is jointly limited by the liquid inlet part and the liquid outlet part;

the second valve body comprises a first end part, a second end part and a second fluid channel which is mutually limited by the first end part and the second end part, the first end part is sleeved on the liquid outlet part, the first fluid channel is communicated with the second fluid channel, and the second end part is configured to shrink and close the second fluid channel under the pressure directed to the axial lead of the second valve body.

Further, in a preferred embodiment of the present invention, the first fluid channel is arranged coaxially with the second fluid channel.

Further, in a preferred embodiment of the present invention, the second valve body is cylindrical.

Further, in a preferred embodiment of the present invention, the second end portion is tapered from a direction away from the first end portion.

Further, in a preferred embodiment of the present invention, the second valve body has elasticity, and preferably, the second valve body is made of a silicone rubber film.

Further, in the preferred embodiment of the present invention, the second valve body is formed by bonding two layers of silicone rubber film by an organic silicon type adhesive, and preferably, the thickness of the single-layer silicone rubber film is 0.02-1.5 mm.

An intragastric balloon fat reducing device comprises the one-way valve.

Further, in the preferred embodiment of the invention, the intragastric balloon fat-reducing device further comprises a catheter, a guide wire, a self-sealing valve and a ball body, wherein the catheter is sleeved on the guide wire, two ends of the self-sealing valve are respectively connected with the guide wire and the one-way valve, and the ball body is sleeved on the one-way valve.

Further, in the preferred embodiment of the present invention, the intragastric balloon fat reducing device further comprises a guide wire seat and a catheter seat which are connected with each other, wherein the guide wire seat is connected with the guide wire, and the catheter seat is connected with the catheter.

Further, in a preferred embodiment of the present invention, the guidewire hub and catheter hub are connected by a luer fitting.

Further, in a preferred embodiment of the present invention, the material of the catheter includes one of silicone rubber and polyvinyl chloride.

Further, in the preferred embodiment of the invention, the sphere is made of organic silicon rubber, the hardness of the sphere is 20-80, the tearing strength is 10-50 MPa, the volume is 300-2000 ml, and the thickness is 0.2-3.0 mm.

Further, in a preferred embodiment of the present invention, the guidewire seat, the catheter seat and the self-sealing valve are made of one of polycarbonate and acrylonitrile-butadiene-styrene copolymer.

Further, in a preferred embodiment of the present invention, the guide wire is made of stainless steel.

An intragastric balloon weight reducing system comprises a sleeve and the intragastric balloon weight reducing device, wherein the sleeve is sleeved on the intragastric balloon weight reducing device.

The one-way valve and intragastric balloon weight-losing device and system have the beneficial effects that:

a one-way valve includes a first valve body and a second valve body. The first valve body is provided with a liquid inlet part, a liquid outlet part and a first fluid channel which is jointly limited by the liquid inlet part and the liquid outlet part. The second valve body includes opposed first and second ends, and a second fluid passageway defined by the first and second ends together. The first fluid passage communicates with the second fluid passage.

The liquid outlet part is sleeved at the first end part, so that the tightness of the first valve body and the second valve body can be obviously improved, and fluid is prevented from penetrating from the connecting sites of the first valve body and the second valve body. The second end is configured to contract and close the second fluid passage under pressure directed toward an axis of the second valve body. The second end portion is capable of contracting under pressure directed toward an axis of the second valve body, and is capable of closing the second fluid passage after contraction so that the second fluid passage is not communicated with the outside. Therefore, the one-way valve has two states of circulation and sealing, and has high tightness and use flexibility.

The intragastric balloon weight reducing device and the intragastric balloon weight reducing system both comprise the one-way valve, the one-way valve can enable the second fluid channel to be tightly closed or opened according to the fluid pressure, the unidirectional flow of the fluid is controlled, and the phenomenon that the fluid flows backwards in the sphere due to the large pressure in the sphere is reduced, so that the intragastric balloon weight reducing device and the intragastric balloon weight reducing system can effectively avoid the leakage of the liquid in the sphere even under the condition of external force in the intragastric placement process, and the use safety of the intragastric balloon weight reducing device and the intragastric balloon weight reducing system is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first view of a check valve provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a second view of a check valve provided by an embodiment of the present invention;

FIG. 3 is a schematic view of an intragastric balloon fat reducing device provided by an embodiment of the present invention;

fig. 4 is a schematic diagram of an intragastric balloon weight loss system provided by an embodiment of the present invention.

Icon: 100-one-way valve; 110-a first valve body; 111-a liquid inlet part; 111 a-a first opening; 112-a liquid outlet part; 112 a-a second opening; 113-a first fluid channel; 120-a second valve body; 121-a first end; 122-a second end; 122 a-a third opening; 123-a second fluid channel; 200-intragastric balloon fat-reducing device; 211-a catheter; 212-a guidewire; 213-self-sealing valve; 214-sphere; 215-catheter hub; 216-a guide wire seat; 300-intragastric balloon slimming system; 310-sleeve.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "middle", "length", "width", "upper", "lower", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "connected," "fixed" and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1 to 4, the present embodiment provides a one-way valve 100, an intragastric balloon weight reducing apparatus 200, and an intragastric balloon weight reducing system 300.

As shown in fig. 1, a check valve 100 includes two valve bodies, a first valve body 110 and a second valve body 120.

The first valve body 110 has a liquid inlet portion 111, a liquid outlet portion 112, and a first fluid passage 113 defined by the liquid inlet portion 111 and the liquid outlet portion 112 together. Specifically, the liquid inlet portion 111 has a first opening 111a, the liquid outlet portion 112 has a second opening 112a, and the flow direction of the fluid in the check valve 100 flows from the first opening 111a to the second opening 112a.

Preferably, in the present embodiment, the liquid inlet 111 protrudes from two ends of the liquid outlet 112, in other words, the length of the liquid inlet 111 is greater than that of the liquid outlet 112, so as to improve the connection stability of the liquid inlet 111 with other devices.

The second valve body 120 includes opposite first and second ends 121, 122, and a second fluid passage 123 defined by the first and second ends 121, 122 together. In this embodiment, the first end 121 is sleeved on the liquid outlet 112. That is, the first end 121 is proximate the first valve body 110.

It should be emphasized that this embodiment, in other words, the embodiment provided in this example, eliminates the situation that the first end 121 is sleeved on the liquid inlet 111. The advantage of the first end 121 being sleeved on the liquid outlet 112 is that the tightness of the first valve body 110 and the second valve body 120 can be obviously improved, the penetration of fluid from the connection site of the first valve body 110 and the second valve body 120 can be prevented, and the connection stability of the first valve body 110 and the second valve body 120 can be improved.

The second end 122 comprises a third opening 122a, and the first fluid channel 113 communicates with the second fluid channel 123, in other words, fluid can enter the first fluid channel 113 from the first opening 111a, then reach the second flow channel from the second opening 112a, and finally reach the outside from the third opening 122 a.

The second end 122 is configured to contract and close the second fluid passage 123 under pressure directed toward the axis of the second valve body 120. Fig. 2 shows a schematic view of the second end 122 contracting and closing the second fluid channel 123 upon receipt of an external pressure. It will be appreciated that the second end 122 is capable of contracting when the second end 122 is subjected to a pressure directed toward the axis of the second valve body 120, and is capable of closing the second fluid passage 123 after contraction, such that the second fluid passage 123 is not in communication with the outside.

In the present embodiment, one embodiment in which the second end 122 is configured to contract and close the second fluid passage 123 under pressure directed toward the axis of the second valve body 120 is realized is that the second valve body 120 has elasticity, and because of its elasticity, the second valve body 120 can contract when the second valve body 120 is pressed by external pressure, and the second valve body 120 can contract to close the second fluid passage 123 when the pressure is excessive.

Preferably, the second valve body 120 is made of a silicone rubber film, and the silicone rubber has a certain elasticity and a certain viscosity, so that when the second valve body 120 is extruded by external pressure, the second valve body 120 can shrink due to the elasticity, and when the pressure is too high, the second valve body can shrink to close the second fluid channel 123, and due to the viscosity, the second valve body 120 can shrink to the two sides of the second valve body to be bonded together, so that the sealing stability of the second fluid channel 123 after being sealed is improved. The check valve 100 has two states of circulation and closure, and has high sealing performance and flexibility in use.

It should be noted that, it is only necessary to satisfy that the second end 122 has elasticity or is made of silicone rubber, and in this embodiment, the entire second valve body 120 is made of silicone rubber in view of convenience of production and processing. Specifically, in actual production, the second valve body 120 may be formed by bonding two layers of silicone rubber film with an organic silicon-based adhesive, and the thickness of the single layer silicone rubber film is 0.02-1.5 mm through innovative research by the inventor. Preferably, the single layer silicone rubber has a thickness of 0.02 to 0.5mm. The stability of the check valve 100 thus produced is optimal.

In order to enable the second valve body 120 to effectively constrict and close the second fluid passage 123, the first fluid passage 113 is disposed coaxially with the second fluid passage 123, and preferably, the center line of the third opening 122a is collinear with the center line of the second opening 112a.

The shape of the second valve body 120 is not limited, and the second valve body 120 is preferably columnar, and preferably the shape of the second end 122 gradually contracts from a direction away from the first end 121. In other words, the first end 121 is cylindrical, and the second end 122 is truncated cone-shaped. Preferably, the round table comprises a first round surface and a second round surface. The diameter of the first circular surface is larger than that of the second circular surface. The first rounded surface is connected to the first end 121. The diameter of the cylinder is equal to the diameter of the first circular surface. This has the advantage that a slope is formed between the second end 122 and the first end 121, which second end 122 can be quickly and effectively contracted to close the second fluid channel 123.

As shown in fig. 3, the present embodiment further provides an intragastric balloon fat reducing device 200, including a one-way valve 100.

The intragastric balloon fat reduction device 200 also includes auxiliary elements including a catheter 211, a guidewire 212, a self-sealing valve 213, and a balloon 214. The guide tube 211 is sleeved on the guide wire 212, two ends of the self-sealing valve 213 are respectively connected with the guide wire 212 and the one-way valve 100, and the ball 214 is sleeved on the one-way valve 100. The use of self-sealing valve 213, catheter 211, and catheter hub 215 may facilitate the use of intragastric balloon fat reduction device 200.

The auxiliary element further comprises a guide wire seat 216 and a guide tube seat 215 which are connected with each other, wherein the guide wire seat 216 is connected with the guide wire 212, and the guide tube seat 215 is connected with the guide tube 211. By providing the guide wire seat 216 and the guide tube seat 215, the convenience of using the intragastric balloon fat reducing device 200 can be further improved. Preferably, the guidewire hub 216 and catheter hub 215 are connected by a luer fitting. Specifically, the guidewire hub 216 carries an outer conical luer fitting. Catheter hub 215 has an internal conical luer fitting.

In this embodiment, the material of the guide wire seat 216, the guide tube seat 215 and the self-sealing valve 213 is one of Polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS).

The polycarbonate is colorless, transparent, heat-resistant and impact-resistant, and has good mechanical properties at ordinary use temperature. Compared with polymethyl methacrylate, the PC has good impact resistance, high refractive index and good processability.

ABS has excellent comprehensive performance, excellent impact strength, good dimensional stability, electrical property, wear resistance, chemical resistance, dyeing property, and better molding processing and mechanical processing.

The conduit 211 is made of soft silicone rubber or other polymer materials such as PVC, and is preferably 80 cm-150 cm long, and has length marking lines thereon.

The guide wire 212 is made of a metal wire with a supporting function and is woven from a plurality of strands, preferably stainless steel.

The ball 214 is made of organic silicon rubber, and it should be emphasized that biomedical grade organic silicon rubber is selected, the hardness is 20-80, the hardness is Shore A hardness, the tearing strength is 10-50 MPa, the volume is 300-2000 ml, and the thickness of the ball 214 is 0.2-3.0 mm.

As shown in fig. 4, the present embodiment also provides an intragastric balloon weight loss system 300 comprising an intragastric balloon weight loss device 200 and a cannula 310. Sleeve 310 is fitted over sphere 214 and is connected to catheter 211.

The working principle and the using method of the intragastric balloon weight-losing system 300 are as follows:

in the first step, the catheter holder 215 is assembled to one end (end) of the catheter 211 containing the length indicator line, a layer of organosilicon adhesive is uniformly coated on the surface of the self-sealing valve 213, the self-sealing valve 213 is assembled to the other end (front end) of the catheter 211 containing the length indicator line, then the guide wire 212 with the guide wire holder 216 is penetrated into the self-sealing valve 213 along the catheter 211, and the guide wire holder 216 and the catheter holder 215 are screwed for standby.

In the second step, the check valve 100 is bonded to the ball 214, the balloon (the balloon in this embodiment is a structure in which the ball 214 and the check valve 100 are assembled) is discharged, the balloon is put into the sleeve 310, and the self-sealing valve 213 is assembled into the check valve 100 of the balloon.

Thirdly, the ball 214 is placed in the stomach under the support of the guide wire 212 through the gastroscope, the guide wire seat 216 is unscrewed, the guide wire 212 is withdrawn, the infusion device is connected outside the guide wire seat 215, physiological saline is injected into the ball 214 through the guide tube 211, the self-sealing valve 213 and the one-way valve 100, the ball 214 is expanded to a desired state to occupy the space in the stomach, at the moment, the sleeve 310 is fully opened and ruptured, the self-sealing valve 213 is pulled away from the one-way valve 100 through the guide tube 211, and meanwhile, the ruptured sleeve 310 is taken out together.

After the balloon was placed in the stomach for 6 months, the balloon was punctured by intragastric surgery and the balloon 214 was removed, completing the entire treatment procedure.

The intragastric balloon weight reducing system 300 provided in this embodiment has the one-way valve 100, the one-way valve 100 can make the second fluid channel 123 tightly closed or opened according to the fluid pressure, and control the fluid to flow unidirectionally, so as to reduce the phenomenon that the fluid flows backwards in the ball 214 due to the large pressure in the ball 214, thus the intragastric balloon weight reducing system 300 can effectively avoid the leakage of the liquid in the ball 214 even under the condition of external force in the intragastric placement process, the use safety of the intragastric balloon weight reducing system 300 is ensured, and in addition, the use of the intragastric balloon weight reducing system 300 is more convenient by using the auxiliary parts.

Test examples

1. Spheres 214 were cut into pieces and placed in hydrochloric acid at ph=1.5, and sampled at a constant temperature of 37 ℃ for 0, 1, 2, 3, 6 months, respectively, to observe the stability and acid aging resistance of spheres 214, and the results are shown in table 1.

2. The balloon containing only the first valve body 110 was used as a control group, the balloon containing the first valve body 110 and the second valve body 120 was used as an experimental group, each of which was filled with physiological saline, the weight was recorded, the mixture was placed at a constant temperature of 37 ℃, and the mixture was weighed at 0, 1, 2, 3, and 6 months, and the data were recorded, and the results are shown in table 2.

TABLE 1 acid resistance stability Properties

As shown in Table 1, after soaking in an acidic environment for 6 months, the ball 214 still has excellent properties in terms of breaking strength and breaking elongation.

Table 2 comparison of balloon leakage performance

As shown in table 2, after the second valve body 120 was added, the balloon leakage amount was significantly smaller than that of the balloon containing only the first valve body 110, and the weight loss rate was only 0.5% for 6 months.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A one-way valve, comprising:

the first valve body comprises a liquid inlet part, a liquid outlet part and a first fluid channel jointly limited by the liquid inlet part and the liquid outlet part;

a second valve body including opposed first and second ends, a second fluid passage defined by the first and second ends together, the first end being sleeved on the liquid outlet portion, the first fluid passage being in communication with the second fluid passage, the second end being configured to contract and close the second fluid passage under pressure directed toward an axis of the second valve body;

the second valve body is formed by bonding two layers of silicon rubber films by using an organic silicon adhesive, and the thickness of a single-layer silicon rubber film is 0.02-1.5 mm.

2. The one-way valve of claim 1, wherein the first fluid passage is coaxially disposed with the second fluid passage.

3. The one-way valve of claim 1, wherein the second valve body is cylindrical.

4. A one-way valve according to claim 3, wherein the second end portion tapers away from the first end portion.

5. An intragastric balloon fat reducing device, comprising the one-way valve, a catheter, a guide wire, a self-sealing valve and a ball according to any one of claims 1-4, wherein the catheter is sleeved on the guide wire, two ends of the self-sealing valve are respectively connected with the guide wire and the one-way valve, and the ball is sleeved on the one-way valve.

6. The intragastric balloon weight loss device of claim 5 further comprising a wire guide seat, a catheter seat interconnected, the wire guide seat connected to the wire guide, the catheter seat connected to the catheter.

7. The intragastric balloon weight loss device of claim 6 wherein the guidewire hub and the catheter hub are connected by a luer fitting.

8. The intragastric balloon weight loss device of claim 5 wherein the material of the catheter comprises one of silicone rubber and polyvinyl chloride.

9. The intragastric balloon fat reducing device according to claim 5, wherein the sphere is made of an organic silicone rubber, has a hardness of 20 to 80, a tear strength of 10 to 50MPa, a volume of 300 to 2000ml, and a thickness of 0.2 to 3.0mm.

10. The intragastric balloon weight loss device of claim 5 wherein the guide wire is stainless steel.

11. The intragastric balloon weight loss device of claim 6 wherein the guidewire seat, catheter seat and self-sealing valve are one of polycarbonate and acrylonitrile-butadiene-styrene copolymer.

12. An intragastric balloon weight loss system comprising a sleeve and an intragastric balloon weight loss device according to any one of claims 5-11, said sleeve being fitted over said intragastric balloon weight loss device.