CN214435808U - Multi-channel conduit - Google Patents

Abstract

The utility model discloses a multichannel pipe, including most advanced, bag, lumen, connector, lumen front end and most advanced intercommunication, most advanced surface is provided with the hole, and the bag encircles and sets up and is close to most advanced department at the lumen, lumen rear end and connector intercommunication, lumen in being provided with two at least, the connector is provided with two passageways at least. The utility model provides a medicine can be carried toward the chamber in the chamber through sacculus pipe to multichannel pipe under can realizing the seal wire protection, can also realize that multiple medicine different modes are simultaneously carried through a large amount of targets of sacculus pipe, reduces the risk of blocking body fluid circulation or lumen embolism. The medicine can effectively treat the intracavity stenosis by the perfusion of the medicine reagent, simultaneously the filling of the capsule can temporarily block the liquid circulation in the cavity, so that the medicine can be fully absorbed at the lesion part, and the medicine has the characteristics of controllable dosage, quick response, simple operation and the like, and can be used for treating the lesion of the cavity of the human body.

Description

Multi-channel conduit

Technical Field

The utility model relates to a medical catheter especially relates to a multichannel pipe, belongs to medical instrument technical field.

Background

Interventional therapy surgery is an important means for treating body cavity stenosis or obstructive diseases such as blood vessels. The saccule conduit is one of the main instruments for dilating blood vessel and other body cavity tract stenosis or obstruction part and opening cavity tract. During clinical use, the balloon catheter is often required to deliver drugs to the cavity through the catheter. The traditional balloon catheter is of a two-channel structure, and the two channels are used for passing a guide wire and inflating and expanding a balloon respectively.

At the moment, the guide wire needs to be withdrawn, and the medicine is injected into the cavity channel through the guide wire channel of the balloon catheter. Although the drug is delivered into the lumen via a catheter, there are a number of risks. First, drug injection can create an impact force that causes the balloon catheter to flutter within the lumen and the balloon catheter tip to lodge, which can damage the lumen wall, creating a risk of lumen occlusion. Secondly, because of no guide wire protection, the risk of acute occlusion of the far end of the cavity caused by drug injection is greatly increased, and once the acute occlusion occurs, the guide wire needs to be fed again, so that the operation is complex and the risk is high.

The drug eluting balloon catheter is an emerging apparatus for treating human body lumen stenosis or blockage diseases such as blood vessels. Traditional drug eluting balloon catheters have a drug coating applied to the balloon surface of the balloon catheter. When the saccule containing the medicine coating expands the local cavity, the medicine coated on the surface of the saccule can be released to the lumen wall of the lesion part, so that the effects of targeted medicine delivery and drug effect exertion are achieved. However, the types and the amounts of the delivered medicines are limited by structures, only one medicine can be generally delivered, and the delivered medicine amount is very low, so that the treatment effect is not satisfactory. In addition, the traditional drug eluting balloon catheter can have residual coating particles in the distal lumen of the target lesion part after local drug delivery, so that the risk of influencing the circulation of body fluid and even causing lumen embolism exists.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a multichannel pipe, its technical scheme as follows:

the utility model provides a multichannel pipe, includes most advanced, bag, lumen, connector, lumen front end and most advanced intercommunication, and most advanced surface is provided with the hole, and the bag is radial to be set up in the lumen and is close to most advanced department, and lumen rear end and connector intercommunication are provided with two interior lumens at least in the lumen, and the connector is provided with two passageways at least.

The inner tube cavities are sequentially sleeved to form a multi-cavity tubular structure.

The inner tube cavities are combined to form a multi-cavity tubular structure.

The inner cavity comprises a third cavity d, a second cavity b and a first cavity a, the second cavity b and the first cavity a are combined to form a double-cavity tubular structure, and the third cavity d is sleeved on the periphery of the second cavity b and the first cavity a to form a three-cavity tubular structure.

The design of different lumens is selected according to requirements, and the effects are that the speed, the flow and the efficiency of delivering the medicinal agent into the lumens are different, so that different treatment effects are achieved.

The connector is provided with two channels, the inner cavity comprises a third cavity d, a second cavity b and a first cavity a, the front end of the first cavity a is communicated with the tip hole, and the rear end of the first cavity a penetrates through the outer walls of the second cavity b and the third cavity d to form a guide wire channel; the front end of the second lumen B is communicated with the hole at the tip end, and the rear end is communicated with a channel B of the connector to form a perfusion cavity; the front end of the third tube cavity d is communicated with the sac, and the rear end of the third tube cavity d is communicated with the connector channel C to form a liquid through cavity.

The connector is provided with three channels, the inner cavity comprises a third cavity d, a second cavity B and a first cavity a, the front end of the first cavity a is communicated with the tip hole, and the rear end of the first cavity a is communicated with the channel B of the connector to form a guide wire channel; the front end of the second lumen b is communicated with the hole at the tip end, and the rear end of the second lumen b is communicated with the channel A of the connector to form a perfusion cavity; the front end of the third tube cavity d is communicated with the sac, and the rear end of the third tube cavity d is communicated with the connector channel C to form a liquid through cavity.

The guide wire channel is used for guiding the guide wire to rapidly pass through complex lesions, so that the effect of accurate positioning is achieved.

A perfusion chamber for delivering a pharmaceutical agent.

And the liquid through cavity is used for conveying the expansion liquid of the sac.

The pointed end adopts a conical structure and is provided with a plurality of holes, so that the efficiency of liquid outflow is improved.

The rear end of the tube cavity is communicated with the connector channel C through a transition tube, the transition tube is of a reducing tube cavity structure, and the transition tube is sleeved on the periphery of the tube cavity.

Developing rings are arranged in the tube cavity in the bag and close to the two ends of the bag.

The surfaces of the balloon and the lumen are provided with a coating.

Compared with the prior art, its advantage effect lies in: the catheter adopts a multi-channel structure, so that the medicine can be conveyed into the cavity channel through the balloon catheter under the protection of the guide wire, and a large amount of targeted conveying of various medicines through the balloon catheter in different modes can be realized, so that the risk of blocking the circulation of body fluid or embolism in the cavity is reduced; the medicine can effectively treat the intracavity stenosis by the perfusion of the medicine reagent, simultaneously can temporarily block the liquid circulation in the cavity by the filling of the capsule, ensures that the medicine can be fully absorbed at the lesion part, has the characteristics of controllable dosage, quick response, simple operation and the like, and can be used for treating the human body cavity lesion, including but not limited to esophagus, blood vessel, trachea, biliary tract, urethra and the like.

Drawings

Fig. 1 shows a structure of a multi-channel duct according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a multi-channel duct according to an embodiment of the present invention;

FIG. 3 is a schematic view of a hole structure at the front end of a guide tube according to an embodiment of the present invention;

fig. 4 shows a structure of a multi-channel duct according to a second embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a two-duct multichannel according to an embodiment of the present invention;

FIG. 6 is a schematic view of a hole structure at the front end of a second conduit according to an embodiment of the present invention;

fig. 7 shows a structure of a multi-channel duct according to a third embodiment of the present invention;

FIG. 8 shows a schematic cross-sectional view of a three duct multi-channel in accordance with an embodiment of the present invention;

FIG. 9 is a schematic view of a hole structure at the front end of a triple duct according to an embodiment of the present invention;

fig. 10 shows the structure of a multi-channel duct according to a fourth embodiment of the present invention;

FIG. 11 shows a schematic cross-sectional view of a four duct multi-channel embodiment of the present invention;

FIG. 12 is a schematic view of a hole structure at the front end of a four-duct according to an embodiment of the present invention;

fig. 13 shows the structure of a multi-channel duct according to a fifth embodiment of the present invention;

figure 14 shows a schematic cross-sectional view of a five duct multi-channel embodiment of the present invention;

FIG. 15 shows a schematic cross-sectional view of another design of a five duct multi-channel of an embodiment of the present invention;

FIG. 16 is a schematic view of a hole structure at the front end of a five-duct according to an embodiment of the present invention;

fig. 1 and 4 are schematic structural views of the connector 9 of the present invention with a dual-channel structure;

fig. 7, 10 and 13 are schematic structural views of the connector 9 of the present invention with a three-channel structure;

FIGS. 2, 5, 8, 10, 14, 15 are cross-sectional views of a multichannel, a-a guidewire channel, b-a perfusion lumen, d-a drainage lumen;

FIGS. 3, 6, 9, 12 and 16 are schematic structural views of the perfusion holes;

in the figure: 1. the device comprises a tip, 2, a hole, 3, a developing ring, 4, a sac, 5, a first lumen a, 6, a second lumen b, 7, a third lumen d, 8, a transition tube, 9 and a connector.

Detailed Description

The following embodiments are further illustrated in the accompanying drawings:

for a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and not only embodiments in which the guide wire channel is located between the tip and the distal rod are shown, but also embodiments in which the guide wire channel is located between the tip and the connector. For a person skilled in the art, without inventive effort, further figures can be obtained from these figures.

Example 1

As shown in fig. 1-3, in this embodiment, when the connector 9 has a dual-channel structure, the structure is designed as follows: firstly, fixing the developing ring 3 on a first lumen a5, wherein the front end of the first lumen a5 is connected with the tip 1; the front end of the second lumen b6 is provided with a perfusion hole which is communicated with a hole 2 on the outer surface of the tip 1; the front end of the balloon 4 is connected with a second cavity tube b6 close to the tip 1, and the rear end of the balloon 4 is connected with a first cavity tube a 5; the first lumen a5 is welded on the tube body through two times of RX ports to form a channel for the guide wire to pass through; the second lumen B6 communicates with the passage B of the connector 9; the third lumen d7 communicates with the channel C of the connector 9; the transition tube 8 is disposed peripherally between the third lumen d7 and the joining head 9. The catheter forming the guide wire channel on the catheter body is called as a guide wire rapid exchange type catheter, is good in operation and convenient to use, facilitates the passage of a tortuous pipeline, and is suitable for a cavity with a small diameter.

The specific implementation mode is as follows: the matched guide wire passes through the lesion under the support of the microcatheter, then the guide wire is inserted into the catheter tip 1 and is pushed into the lesion cavity from the first lumen a5, and due to the structural design, the guide wire penetrates out of a guide wire channel formed by the rear end of the first lumen a5 and the outer walls of the second lumen b6 and the third lumen d 7; the catheter continues to advance until approximately 1mm proximal to the lesion; then, the bag 4 is quickly pressurized through a channel C of the connector 9, the expanding liquid is conveyed into the bag 4 to fill the bag 4, and then the medicine is filled through a channel B of the connector 9 for less than 1 min; the medicine is delivered into the tip 1 through the second lumen b6, and then acts on the lesion through the holes 2 on the surface of the tip 1; finally, the drug infusion is stopped, the balloon 4 is decompressed and the catheter is withdrawn, the guide catheter and the guide wire are withdrawn successively, and the infusion treatment is finished. If the lesion is complicated, a 1.25mm single-marked small-diameter balloon can be selected before passing through the catheter, and the balloon is gradually expanded to the distal end of the lesion, so that the contact area between the medicine and the lumen is larger and the effect is better when the medicine is filled.

Example 2

As shown in fig. 4-6, in this embodiment, when the connector 9 has a dual-channel structure, the structure is designed as follows: in this embodiment, the first lumen a5 and the second lumen b6 are combined into a double lumen tube, and the cross section is as shown in fig. 5, the front end part of the outer cavity of the double lumen tube is provided with a perfusion hole, and then the developing ring is fixed on the double lumen tube, the front end of the double lumen tube is connected with the tip 1, and the tip 1 is designed as a single lumen tube; the front end of the sac 4 is connected with the double-lumen tube close to the tip 1, and the rear end is communicated with the third lumen d 7; the first lumen a is formed in the tube body through two times of RX port welding to form a channel for the guide wire to pass through; the second cavity B6 is communicated with a channel B of the connector; the third lumen d7 is connected with channel C; the transition tube 8 is disposed peripherally between the third lumen d7 and the joining head 9. The catheter forming the guide wire channel on the catheter body is called as a guide wire rapid exchange type catheter, is good in operation and convenient to use, facilitates the passage of a tortuous pipeline, and is suitable for a cavity with a small diameter.

The specific implementation mode is as follows: the matched guide wire passes through the lesion under the support of the microcatheter, then the guide wire is inserted into the catheter tip 1, the guide wire is pushed into the lesion cavity from the first lumen a5, due to the structural design, the guide wire penetrates out of a guide wire channel formed by the rear end of the first lumen a5 through the outer walls of the second lumen b6 and the third lumen d7, and the catheter is continuously pushed until the guide wire approaches to the lesion by about 3 mm; then, the bag 4 is inflated by quickly pressing through a channel C opening of the connector 9, the expanding liquid is conveyed into the bag 4, the bag 4 is inflated, and then the medicine is filled through a channel B of the connector 9, wherein the filling time is less than 1 min; the medicine is delivered into the tip 1 through the second lumen b6, and then acts on the lesion through the holes 2 on the surface of the tip 1; finally, the drug infusion is stopped, the balloon 4 is decompressed and the catheter is withdrawn, the guide catheter and the guide wire are withdrawn successively, and the infusion treatment is finished. If the lesion is complicated, a 1.3mm single-marked small-diameter balloon can be selected before passing through the catheter, and the balloon is gradually expanded to the distal end of the lesion, so that the contact area between the medicine and the lumen is larger when the medicine is filled, and the effect is better.

Example 3

As shown in fig. 7-9, in this embodiment, when the connector 9 has a three-channel structure, the specific structure is designed as follows: firstly, fixing a developing ring on a first lumen a5, wherein the front end of the first lumen a5 is connected with a tip 1; the front end of the second lumen b is provided with a perfusion hole which is communicated with a hole 2 on the outer surface of the tip 1; the front end of the balloon 4 is connected with a second lumen b6 close to the tip 1, and the rear end of the balloon 4 is connected and communicated with a third lumen d 7; the first lumen a5 communicates with channel B, the second lumen B6 communicates with channel a, the third lumen d7 communicates with channel C; the transition tube 8 is disposed peripherally between the third lumen d7 and the joining head 9. The catheter which is used for the guide wire to pass through the single channel of the connector is generally called as a guide wire integral exchange type catheter, has better tube body support and is suitable for a cavity with larger diameter.

The specific implementation mode is as follows: the matched guide wire passes through the lesion under the support of the microcatheter, then the guide wire is inserted into the tip end 1 of the catheter and is pushed into the lesion cavity from the first lumen a, due to the structural design, the guide wire can penetrate out from the opening B of the connector 9, and the catheter is continuously pushed until the guide wire approaches to the lesion part by about 5 mm; then, the bag 4 is inflated by quickly pressing through a channel C opening of the connector 9, the expanding liquid is conveyed into the bag 4, the bag 4 is inflated, and then the medicine is filled along a channel A of the connector 9, wherein the filling time is less than 1 min; the medicine is delivered into the tip 1 through the second lumen b6, and then acts on the lesion through the holes 2 on the surface of the tip 1; finally, the drug infusion is stopped, the balloon 4 is decompressed and the catheter is withdrawn, the guide catheter and the guide wire are withdrawn successively, and the infusion treatment is finished. If the lesion is complicated, a 1.4mm single-marked small-diameter balloon can be selected before passing through the catheter, and the balloon is gradually expanded to the distal end of the lesion, so that the contact area between the medicine and the lumen is larger and the effect is better when the medicine is poured.

Example 4

As shown in fig. 10-12, in this embodiment, when the connector 9 has a three-channel structure, the first lumen a and the second lumen b are merged into a double-lumen tube, and the cross section is as shown in fig. 11, and the specific structure is designed as follows: firstly, arranging a perfusion hole at the front end of an outer cavity of a double-cavity tube, and then fixing a developing ring 3 on the double-cavity tube, wherein the front end of the double-cavity tube is connected with a tip 1; the front end of the sac 4 is connected with the double-lumen tube close to the tip 1, and the rear end of the sac 4 is connected with the third lumen d 7; the first lumen a5 communicates with channel B, the second lumen B communicates with channel a, the third lumen d7 communicates with channel C; the transition tube 8 is disposed peripherally between the third lumen d7 and the joining head 9. The catheter which is used for the guide wire to pass through the single channel of the connector is generally called as a guide wire integral exchange type catheter, has better tube body support and is suitable for a cavity with larger diameter.

The specific implementation mode is as follows: the matched guide wire passes through the lesion under the support of the microcatheter, then the tail end of the guide wire is inserted into the catheter tip 1 and is pushed into the lesion cavity from the first lumen a5, due to the structural design, the guide wire can penetrate out from the opening B of the connector 9, and the catheter continues to be pushed until the guide wire approaches to the lesion by about 7 mm; then, quickly pressurizing along a channel C opening of the connector, conveying an expanding liquid into the sac 4 to enable the sac 4 to be full, and then filling the medicine along a channel A of the connector 9 for less than 1 min; the medicine is delivered into the tip 1 through the second lumen b6, and then acts on the lesion through the holes 2 on the surface of the tip 1; finally, stopping the drug perfusion, removing the pressure of the balloon and withdrawing the catheter, and withdrawing the guide catheter and the guide wire in sequence to finish the perfusion treatment. If the lesion is complicated, a 1.5mm single-marked small-diameter balloon can be selected before passing through the catheter, and the balloon is gradually expanded to the distal end of the lesion, so that the contact area between the medicine and the lumen is larger and the effect is better when the medicine is filled.

EXAMPLE 5

As shown in fig. 13 to 16, in this embodiment, when the connector 9 is a three-channel structure, the third lumen, the second lumen and the first lumen in this embodiment are combined into a three-lumen tube, a schematic cross-sectional view is shown in fig. 14/15, and the specific structural design is as follows: the front end part of the third lumen d7 is firstly stripped, the stripping length is about 5-10mm plus the length of the capsule 4, the data is determined according to the length range of the capsule 4, and the length of the capsule 4 is preferably 8-40 mm; then, the front end of the second lumen b6 is provided with a perfusion hole, and the front end of the first lumen a5 is connected with the tip 1; then fixing the developing ring on the first lumen a5 and the second lumen b6 of the two inner lumens of the three-lumen tube; the front end of the balloon 4 is connected with the first and second lumens a5 and b6 near the tip 1, and the rear end of the balloon 4 is communicated with the third lumen d 7; when the three-cavity tube is connected with the connector 9, pretreatment is firstly carried out, the third tube cavity d7 and the second tube cavity b6 of the three-cavity tube are sequentially stripped, and the stripping length is the length of the long shaft 1/6 to 1/2 of the connector 9; the first lumen a5 communicates with channel B, the second lumen B6 communicates with channel a, the third lumen d7 communicates with channel C; a transition tube 8 is arranged peripherally between the third lumen d and the connection head 9. The catheter which is used for the guide wire to pass through the single channel of the connector is generally called as a guide wire integral exchange type catheter, has better tube body support and is suitable for a cavity with larger diameter.

The specific implementation mode is as follows: the matched guide wire passes through the lesion under the support of the microcatheter, then the tail end of the guide wire is inserted into the catheter tip 1 and is pushed into the lesion cavity from the first lumen a5, due to the structural design, the guide wire can penetrate out from the opening B of the connector 9, and the catheter continues to be pushed until the guide wire approaches to the lesion by about 10 mm; then, quickly pressurizing along a channel C opening of the connector, conveying an expanding liquid into the sac 4 to enable the sac 4 to be full, and then filling the medicine along a channel A of the connector 9 for less than 1 min; the medicine is delivered into the tip 1 through the second lumen b6, and then acts on the lesion through the holes 2 on the surface of the tip 1; finally, the drug infusion is stopped, the balloon 4 is decompressed and the catheter is withdrawn, the guide catheter and the guide wire are withdrawn successively, and the infusion treatment is finished. If the lesion is complicated, a 1.5mm single-marked small-diameter balloon can be selected before passing through the catheter, and the balloon is gradually expanded to the distal end of the lesion, so that the contact area between the medicine and the lumen is larger and the effect is better when the medicine is filled.

The foregoing is considered as illustrative and not restrictive of the preferred embodiments of the present invention, and any modifications, equivalents, improvements and the like that come within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (10)

1. The utility model provides a multichannel pipe, includes most advanced (1), bag (4), lumen, connector (9), its characterized in that, lumen front end and most advanced (1) intercommunication, most advanced (1) surface is provided with hole (2), and bag (4) radially set up and are close to most advanced (1) department at the lumen, lumen rear end and connector (9) intercommunication, and the intracavity is provided with two interior lumens at least, and connector (9) are provided with two passageways at least.

2. The multi-channel catheter of claim 1, wherein the inner lumens are nested one within the other to form a multi-lumen tubular structure.

3. The multi-channel catheter of claim 1, wherein the inner lumens merge into a multi-lumen tubular structure.

4. The multi-channel catheter according to claim 1, wherein the inner lumens comprise a third lumen d (7), a second lumen b (6) and a first lumen a (5), the second lumen b (6) and the first lumen a (5) are combined to form a double-cavity tubular structure, and the third lumen d (7) is sleeved on the periphery of the second lumen b (6) and the first lumen a (5) to form a triple-cavity tubular structure.

5. A multichannel catheter as claimed in claim 1, characterised in that the tip (1) is of conical configuration.

6. The multi-channel catheter according to any one of claims 2 to 4, wherein the connector (9) is provided with two channels, the inner cavity comprises a third cavity d (7), a second cavity b (6) and a first cavity a (5), the front end of the first cavity a (5) is communicated with the hole of the tip (1), and the rear end of the first cavity a (5) penetrates through the outer walls of the second cavity b (6) and the third cavity d (7) to form a guide wire channel; the front end of the second tube cavity B (6) is communicated with the hole of the tip (1), and the rear end is communicated with a channel B of the connector (9) to form a perfusion cavity; the front end of the third tube cavity d (7) is communicated with the sac (4), and the rear end is communicated with the channel C of the connector (9) to form a liquid through cavity.

7. The multi-channel catheter according to any one of claims 2 to 4, wherein the connector (9) is provided with three channels, the inner cavity comprises a third cavity d (7), a second cavity B (6) and a first cavity a (5), the front end of the first cavity a (5) is communicated with the hole of the tip (1), and the rear end of the first cavity a (5) is communicated with the channel B of the connector (9) to form a guide wire channel; the front end of the second tube cavity b (6) is communicated with the hole of the tip (1), and the rear end is communicated with the channel A of the connector (9) to form a perfusion cavity; the front end of the third tube cavity d (7) is communicated with the sac (4), and the rear end is communicated with the channel C of the connector (9) to form a liquid through cavity.

8. The multi-channel catheter as claimed in claim 6, wherein the rear end of the catheter cavity is communicated with the channel C of the connector (9) through a transition pipe (8), the transition pipe (8) is of a variable-diameter catheter cavity structure, and the transition pipe is sleeved on the periphery of the catheter cavity.

9. The multi-channel catheter according to claim 1, characterized in that the balloon (4) inner lumen is provided with visualization rings (3) near both balloon (4) ends.

10. The multi-channel catheter according to claim 1, characterized in that the balloon (4) and the surface of the lumen are provided with a coating.

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