Backflow-preventing delivery device and insertion system thereof

Abstract

The purpose of the present invention is to provide a backflow-preventing delivery device and an insertion system thereof, the backflow-preventing delivery device comprising: an inlet port through which a flowing object flows in; an outlet port through which the flowing object flows out; and a flow path which connects the inlet port and the outlet port and through which the flowing object passes. The flow path includes: a first flow path element that connects the inlet port to the outlet port; and one or more second flow path elements which branch off at a first branch point of the first flow path in the direction from the inlet port to the outlet port and then merge at a second branch point of the first flow path, wherein the direction of inlets of the first branch point and the second branch point is towards the outlet port. The backflow-preventing delivery device controls the flowing object to only flow in the direction from the inlet port to the outlet port, is installed in curved, narrow regions, prone to stenosis, of ducts in the human body through which flowing objects such as drugs, saliva, blood, urine, and tears flow, and prevents the flowing object from flowing backward in the ducts while controlling the direction of flow so that the flowing object flows in a certain direction, thereby improving the flow (secretion) of the flowing object.

Description

Backflow prevention transmission device and its insertion system

[0001] The present invention relates to a backflow prevention transmission device for a fluid object and an insertion system thereof, and more particularly, to a backflow prevention transmission device and an insertion system thereof that is mounted in a conduit through which a fluid object flows and prevents backflow of a fluid object flowing along the conduit while expanding and maintaining the conduit.

[0002] Typically, implantable medical devices, such as stents, may be designed to provide a pathway for digestive material, blood, or other fluids to flow through after a medical procedure.

[0003] Additionally, some implantable medical devices may include features that aid in fistula repair, bypass procedures, and / or anastomotic repair.

[0004] Such implantable medical devices may include radial or self-expanding stents that can be implanted translumenally through an endoscope.

[0005] Additionally, some stents can be implanted within various body lumens, such as the esophagus, gastrointestinal tract (e.g., intestine, stomach, colon), bronchial tubes, urinary tract, biliary tract, and vascular system.

[0006] In some stents, the compressibility and flexibility that aid in stent deployment can also lead to stent flow. For example, stents designed for placement in the esophagus or gastrointestinal tract may tend to flow due to peristalsis, the involuntary contraction and relaxation of the muscles of the esophagus, intestines, and colon.

[0007] Additionally, the generally moist and inherently lubricating environment of the esophagus, intestines, and colon further contributes to the tendency of stents to flow after deployment.

[0008] Meanwhile, there was a risk that stents inserted into the body would become restenotic over time due to food or body fluids, and if restenosis occurred, the stent had to be replaced through surgical procedures.

[0009] However, the process of replacing a stent that has undergone restenosis is cumbersome, and there is a problem that secondary damage such as bleeding and infection due to tissue damage during the replacement process may occur.

[0010] Additionally, in patients with bile duct cancer, there was a possibility that food or digestive juices flowing from the stomach could reflux into the bile duct.

[0011] Therefore, there is a need to develop a stent that can prevent body fluids from flowing back into specific areas of the body.

[0012] For prior art, please refer to Patent Publication No. 10-2023-0026746 (February 27, 2023).

[0013] The purpose of the present invention is to provide a backflow prevention delivery device and an insertion system thereof that are installed in a narrow and curved area of ​​a human body tube where a fluid object such as a drug, saliva (saliva), blood, urine, and tears flows, where stenosis is likely to occur, and that controls the direction of flow so that the fluid object flows in a certain direction, while preventing the fluid object from flowing backward within the tube, thereby improving the flow (secretion) of the fluid object.

[0014] A backflow prevention transmission device according to the present invention comprises an inlet through which a fluid object is introduced; an outlet through which the fluid object is discharged; and a flow path connecting the inlet and the outlet and through which the fluid object passes, wherein the flow path comprises a first flow path element communicating from the inlet to the outlet, and branches from the inlet toward the outlet at a first branch point of the first flow path element and then joins again at a second branch point of the first flow path element, and the inlet direction of the first branch point and the second branch point includes at least one second flow path element facing the outlet, so that the fluid object is controlled to flow only in a direction from the inlet toward the outlet.

[0015] At this time, the first flow element according to the present invention is formed in a zigzag manner to have a plurality of transition points at which the flow angle changes, and the transition points correspond to the first branch point and the second branch point, respectively.

[0016] And it is preferable that the second euro element according to the present invention is a curve.

[0017] Here, the fluidic object according to the present invention is any one selected from among drugs, saliva, blood, urine, and tears.

[0018] In addition, it is preferable that the backflow prevention transmission device according to the present invention is formed of a metal or polymer material.

[0019] Additionally, the backflow prevention transmission device according to the present invention may have a surface coated with polytetrafluoroethylene (PTFE).

[0020] An insertion system for a backflow prevention transmission device according to the present invention includes a backflow prevention transmission device; and a probe for transporting the backflow prevention transmission device into a conduit.

[0021] At this time, the probe according to the present invention includes a main body portion in which the backflow prevention transmission device is mounted, and a protrusion portion that supports one end of the backflow prevention transmission device.

[0022] And it is preferable that the probe according to the present invention is detached from the backflow prevention transmission device after guiding the backflow prevention transmission device to the conduit.

[0023] The effects exhibited by the backflow prevention transmission device and its insertion system according to the present invention are as follows.

[0024] It is installed in a narrow and curved area of ​​a human body's duct where a fluid object such as a drug, saliva (spit), blood, urine, or tears flows, where stenosis is likely to occur, and controls the direction of flow so that the fluid object flows in a certain direction, while preventing the fluid object from flowing backward within the duct, thereby improving the flow (secretion) of the fluid object.

[0025] Figure 1 illustrates a backflow prevention transmission device according to an embodiment.

[0026] Figure 2 illustrates a backflow prevention transmission device according to an embodiment.

[0027] Figure 3 illustrates a flow path of a backflow prevention transmission device according to an embodiment.

[0028] Figure 4 illustrates a probe according to an embodiment.

[0029] Figure 5 illustrates a backflow prevention transmission device insertion system and insertion method according to an embodiment.

[0030] Figures 6 and 7 illustrate a state in which a backflow prevention transmission device according to the present invention is installed in a saliva (needle) duct.

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concept of a term to best explain his or her invention, the terms and words should be construed in a way that conforms to the technical spirit of the present invention.

[0032] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be equivalent modified examples that can replace them at the time of filing this application.

[0033] The present invention relates to a reverse flow prevention transmission device for a fluid object and an insertion system thereof, which is mounted in a conduit through which a fluid object flows and controls the direction of flow so that the fluid object flows in a certain direction while preventing the fluid object from flowing backward within the conduit. The present invention will be described with reference to the drawings as follows.

[0034] First, duct stenosis is likely to occur in the curved or narrow sections of various ducts, such as the salivary gland ducts, blood vessels, urethra, and tear ducts, through which fluids such as drugs, saliva, blood, urine, and tears flow inside the human body.

[0035] If a reflux prevention device suitable for these areas can be inserted to widen and maintain the duct, various diseases caused by reduced flow of the fluid object can be prevented and symptoms can be prevented by facilitating the flow of the fluid object.

[0036] In addition, the problem of reverse flow within the pipe can be solved by adding a three-dimensional structure to the backflow prevention transmission device as needed to control the flow object so that it can flow in a certain direction.

[0037] A backflow prevention delivery device (10) according to an embodiment of the present invention can be inserted into a conduit (G) through which a fluid object such as a drug, saliva (spit), blood, urine, or tears flows.

[0038] The backflow prevention transmission device (10) with reference to Fig. 1 may be formed as a hollow tube having openings at both ends, and the backflow prevention transmission device (10) may include an inlet (101), an outlet (102), and a flow path (103).

[0039] Specifically, the inlet (101) is an opening formed at one end of the backflow prevention transmission device (10), through which a fluid object (S) such as a drug, saliva (spit), blood, urine, and tears can be introduced, and the outlet (102) is an opening formed at the other end of the backflow prevention transmission device (10), through which the fluid object (S) can be discharged.

[0040] The above-mentioned euro (103) can connect the inlet (101) and the outlet (102) to allow the drug and the fluid object (S) to pass through the inside of the backflow prevention delivery device (10).

[0041] At this time, the above-mentioned flow path (103) can control the flow direction of the fluid object (S). For example, the above-mentioned flow path (103) can only allow one-way flow of the fluid object (S).

[0042] And referring to FIG. 2, the flow path (103) of the backflow prevention transmission device (10) may be formed as a non-hollow structure, and the flow path (103) of the backflow prevention transmission device (10) according to the embodiment may include a first flow path element (1031) and a second flow path element (1032).

[0043] Specifically, the first flow element (1031) can allow the flow of a fluid object from the inlet (101) toward the outlet (102).

[0044] For example, the first flow element (1031) may have a structure in which multiple linear channels are connected at different angles. That is, the first flow element (1031) may be formed as a zigzag channel.

[0045] This first euro element (1031) has a plurality of transformation points at which the angle of the linear channel changes, and at each transformation point, the flow angle of the body fluid can change.

[0046] The second flow element (1032) may be formed as a curved channel, and the second flow element (1032) may be provided in multiple pieces, and each may be arranged alternately around the first flow element (1031) as shown in FIG. 2.

[0047] Additionally, the second euro element (1032) can be arranged so that both ends are connected to different conversion points of the first euro element (1031).

[0048] For example, the second euro element (1032) may have one end connected to one of the conversion points of the first euro element (1031) and the other end connected to an adjacent conversion point.

[0049] Accordingly, the second euro element (1032) can connect one conversion point and an adjacent conversion point.

[0050] Referring to FIG. 3, the first flow element (1031) allows the fluid object to flow from the inlet (101) toward the outlet (102), and the second flow element (1032) can restrict the fluid object from flowing from the outlet (102) toward the inlet (101).

[0051] Referring to Fig. 3(a), a fluid object flowing from the inlet (101) to the outlet (102) can flow along the first flow element (1031) without passing through the second flow element (1032).

[0052] In Fig. 3(b), the flow of a fluid object flowing from the outlet (102) toward the inlet (101) is indicated by a dotted arrow. The fluid object flowing in this manner can be introduced into the second flow element (1032) at the conversion point.

[0053] The flowing object introduced into the second flow element (1032) can flow along the second flow element (1032) to the next transformation point.

[0054] At this time, the direction of the flowing object flowing out of the second flow element (1032) can be changed by the shape of the second flow element (1032).

[0055] That is, the second flow element (1032) can guide the flow of the flow target from the outlet (102) to the inlet (101) from one conversion point to an adjacent conversion point, and change the flow direction of the flow target from the inlet (101) to the outlet (102).

[0056] The above-described backflow prevention transmission device (10) can be used to expand a conduit through which a fluid object flows. For example, the backflow prevention transmission device (10) can be inserted into a narrow and curved portion of the conduit through which the fluid object flows, where stenosis is likely to occur. For this purpose, the backflow prevention transmission device (10) can have flexibility to facilitate insertion into a narrow conduit.

[0057] Additionally, the surface coating can prevent calcium deposition or mineral formation even when exposed to a fluid object.

[0058] In addition, by controlling the flow and directionality of the fluid object, it is possible to resolve the fluid object flow (secretion) hypofunction caused by stagnation or reverse flow of the fluid object, such as in an overly expanded duct.

[0059] In order to insert the aforementioned reflux prevention device (10) into a conduit through which a fluid object flows, a sialendoscope or a conduit probe used in endoscopy may be used.

[0060] Fig. 4 illustrates a probe (20) of a backflow prevention transmission device insertion system according to an embodiment.

[0061] FIG. 5 illustrates a method of inserting a backflow prevention device using a backflow prevention device insertion system according to one embodiment.

[0062] Referring to FIGS. 4 and 5, the backflow prevention transmission device insertion system according to the embodiment may include a backflow prevention transmission device (10) and a probe (20).

[0063] Specifically, the backflow prevention transmission device (10) can be inserted into a conduit (G) through which a fluid object flows, like the backflow prevention transmission device (10) described above.

[0064] It is preferable that this backflow prevention transmission device (10) be manufactured from a material to which organic or inorganic substances are difficult to adhere or precipitate. For example, the backflow prevention transmission device (10) may be formed from a metal or polymer material.

[0065] Additionally, the backflow prevention device (10) may have its surface coated with polytetrafluoroethylene (PTFE).

[0066] In addition, the length of the reflux prevention delivery device (10) can be formed to be 1 to 2 cm, which is a shorter length than a conventional general cannula, and thus the reflux prevention delivery device (10) can be partially used in the area where stricture has occurred.

[0067] In addition, the backflow prevention transmission device (10) may be formed in a hollow cylindrical shape or may be formed in a structure capable of controlling the directionality of a flowing object.

[0068] A backflow prevention transmission device (10) of a backflow prevention transmission device insertion system according to one embodiment may include, similarly to the backflow prevention transmission device (10) described with reference to FIGS. 1 to 3, an inlet (101) through which a fluid object is introduced, an outlet (102) through which a fluid object is discharged, and a flow path (103) connecting the inlet (101) and the outlet (102) and through which a fluid object passes, wherein the flow path (103) may only allow one-way flow of the fluid object.

[0069] In addition, the above-described flow path (103) may include a first flow path element (1031) formed in a zigzag pattern to allow the flow of a fluid object and to have a plurality of transition points at which the flow angle changes, and a second flow path element (1032) formed in a curved shape to connect one of the transition points of the first flow path element (1031) and an adjacent transition point.

[0070] This second flow element (1032) can change the flow direction by guiding the flow of the flow object from the outlet (102) to the inlet (101) from one conversion point to an adjacent conversion point.

[0071] The probe (20) of the backflow prevention device insertion system according to the embodiment can transport the backflow prevention device (10) into a conduit (G) through which a fluid object flows.

[0072] For example, the probe (20) can guide the anti-reflux device (10) to the stenosis (A) of the conduit (G).

[0073] Referring to FIG. 4, the probe (20) may include a main body (201) and a protrusion (202).

[0074] Specifically, the main body (201) may be formed in an elongated circular rod shape, and a backflow prevention transmission device (10) may be mounted on the main body (201).

[0075] The above protrusion (202) may be formed on one side of the main body (201), or the protrusion (202) may be formed to protrude radially from the circumference of the main body (201).

[0076] These protrusions (202) can support one end of the backflow prevention transmission device (10).

[0077] That is, when the backflow prevention transmission device (10) is mounted on the probe (20) and flows through the conduit (G), the protrusion (202) can restrict the flow of the probe (20) so that the backflow prevention transmission device (10) is not pushed out in the direction opposite to the flow direction of the probe (20).

[0078] Referring to Fig. 5, the backflow prevention transmission device (10) can be transferred to the constriction (A) of the conduit (G), which is the target point.

[0079] As shown in Fig. 5(a), the backflow prevention transmission device (10) can be mounted on the main body (201) of the probe (20).

[0080] At this time, the backflow prevention transmission device (10) can be installed so that the direction in which the fluid object flows within the conduit (G) through which the fluid object flows and the direction from the inlet (101) of the backflow prevention transmission device (10) to the outlet (102) are identical.

[0081] The above probe (20) can be inserted into a conduit (G) through which a fluid object flows and can flow.

[0082] At this time, the backflow prevention transmission device (10) can be prevented from being separated from the probe (20) by the protrusion (202) of the probe (20).

[0083] The main body (201) of the above probe (20) may be formed in a dome shape with a rounded front. Accordingly, as illustrated in Fig. 5(b), the probe (20) can expand the constriction (A) before the backflow prevention transmission device (10) when the flowing object reaches the constriction (A) of the conduit (G) through which the flowing object flows. In this way, the probe (20) can guide the backflow prevention transmission device (10) to the constriction (A) of the conduit (G) through which the flowing object flows.

[0084] When the above-described backflow prevention transmission device (10) is completely placed in the constriction (A) of the conduit (G), the probe (20) can be detached from the backflow prevention transmission device (10) by flowing in the direction opposite to the direction in which the backflow prevention transmission device (10) is transported.

[0085] That is, only the backflow prevention transmission device (10) is maintained and fixed in the above conduit (G), and the probe (20) can be removed.

[0086] By using the aforementioned backflow prevention transmission device insertion system, a backflow prevention transmission device (10) can be easily inserted into a constricted portion (A) of a conduit (G) through which a fluid object flows, thereby maintaining the conduit (G) in an expanded state.

[0087] In addition, the backflow prevention transmission device (10) according to the embodiment can be installed semi-permanently and maintained for a long time within the conduit (G).

[0088] Accordingly, there is no need to perform periodic procedures for expanding the above-mentioned duct (G), and diseases caused by decreased flow (secretion) of the fluid object can be prevented by permanently facilitating the flow of the fluid object.

[0089] In addition, the backflow prevention transmission device (10) according to the embodiment can prevent the flow object (S) from flowing backward within the conduit (G) by controlling the flow direction so that the flow object (S) flows in a certain direction.

[0090] FIG. 6 and FIG. 7 show a state in which a backflow prevention transmission device (10) according to the present invention is installed in a saliva (needle) conduit. FIG. 6 shows a case in which the flow direction of saliva is installed so that the direction from the inlet (101) to the outlet (102) of the backflow prevention transmission device (10) is the same.

[0091] In this regard, the backflow prevention transmission device (10) can be installed so that the flow direction of saliva within the saliva conduit (G) by the probe (20) and the direction from the inlet (101) of the backflow prevention transmission device (10) to the outlet (102) are identical.

[0092] Here, the probe (20) can be inserted into the saliva conduit (G) and flow, and as described above, since the direction from the inlet (101) to the outlet (102) of the backflow prevention transmission device (10) matches the flow direction of the saliva, the saliva, which is a flowing object flowing from the inlet (101) to the outlet (102), can flow along the first flow element (1031) without passing through the second flow element (1032).

[0093] Therefore, diseases caused by decreased saliva secretion can be prevented by facilitating saliva secretion.

[0094] In addition, Fig. 7 shows a case where the flow direction of saliva and the direction from the inlet (101) of the backflow prevention transmission device (10) to the outlet (102) are installed in reverse.

[0095] In this case, when a lesion occurs in a salivary gland or other organ that continuously produces saliva, which is a fluid object, and a drug is injected to treat the lesion, the problem of the drug injected through the salivary duct not reaching the lesion due to the continuously flowing saliva can be overcome.

[0096] At this time, the drug, which is a fluid object flowing from the inlet (101) to the outlet (102) of the above-mentioned backflow prevention transmission device (10), can flow along the first flow element (1031) without passing through the second flow element (1032).

[0097] And the flow target (saliva + drug) that is trying to flow from the outlet (102) to the inlet (101) is restricted by the second flow element (1032) of the backflow prevention transmission device (10).

[0098] The process of limiting the flow is shown in Fig. 3(b) as a flow of a flow object moving from the outlet (102) toward the inlet (101) indicated by a dotted arrow, and the flow object flowing in this way can be introduced into the second flow element (1032) at the transition point.

[0099] The fluid object introduced into the second flow element (1032) may move to the next transformation point along the second flow element (1032).

[0100] At this time, the direction of the flowing object flowing out of the second flow element (1032) can be changed by the shape of the second flow element (1032).

[0101] That is, the second flow element (1032) can guide the flow of the flow target from the outlet (102) to the inlet (101) from one conversion point to an adjacent conversion point, and change the flow direction of the flow target from the inlet (101) to the outlet (102).

[0102] Therefore, resistance occurs due to the change in the flow direction of the flowing object, and the flowing object (saliva + drug) that is trying to flow from the outlet (102) to the inlet (101) is restricted from flowing by the second flow element (1032) of the backflow prevention transmission device (10).

[0103] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent alternative embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. Includes an inlet for introducing a fluidic object; an outlet for introducing the fluidic object; and a path connecting the inlet and the outlet and through which the fluidic object passes. The above euro is, A first flow element communicating from the inlet to the outlet, A backflow prevention transmission device that branches off from the inlet toward the outlet at the first branch point of the first flow element and then joins again at the second branch point of the first flow element, wherein the inlet directions of the first and second branch points include at least one second flow element facing the outlet, thereby controlling the flow target to flow only in the direction from the inlet toward the outlet.

2. In claim 1, The above first euro element is, It is formed in a zigzag pattern so as to have multiple transition points where the flow angle changes, The above conversion points are the reverse flow prevention transmission devices corresponding to the first and second branch points, respectively.

3. In claim 2, The above second element is a curved reverse flow prevention transmission device.

4. In any one of claims 1 to 3, The above fluid object is, A device for preventing reflux of any one selected from drugs, saliva, blood, urine, and tears.

5. In any one of claims 1 to 3, A backflow prevention device formed of a metal or polymer material.

6. In claim 5, A backflow prevention transmission device with a polytetrafluoroethylene (PTFE) coating on the surface.

7. A backflow prevention transmission device according to any one of claims 1 to 3; and An insertion system for a backflow prevention device including a probe for transporting the backflow prevention device into a conduit.

8. In claim 7, The above probe, A main body part in which the above-mentioned backflow prevention transmission device is installed, An insertion system for a backflow prevention transmission device including a protrusion supporting one end of the backflow prevention transmission device.

9. In claim 8, The above probe, An insertion system for a backflow prevention transmission device that guides the backflow prevention transmission device into the conduit and then detaches it from the backflow prevention transmission device.

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