CN221205481U

CN221205481U - Ultrasonic catheter

Info

Publication number: CN221205481U
Application number: CN202322488569.4U
Authority: CN
Inventors: 吴科; 梁争争; 黄朋涛; 刘珲祯; 曹键波
Original assignee: Suzhou Bodong Rongying Medical Technology Co ltd; Shanghai Bodong Medical Technology Co ltd
Current assignee: Suzhou Bodong Rongying Medical Technology Co ltd; Shanghai Bodong Medical Technology Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-06-25
Anticipated expiration: 2033-09-13

Abstract

The utility model discloses an ultrasonic catheter, and belongs to the technical field of interventional catheters. According to the ultrasonic catheter, the inner tube and the outer tube are in threaded connection with the threaded connection matching piece through the threaded connection matching piece, once the problem that the catheter is clamped in the clinical use process, the inner tube and the outer tube are convenient to detach in time, the important safety problems that the catheter cannot be withdrawn from a patient and the like are avoided, and air in the catheter can be rapidly discharged through the through hole in the sheath tube, so that the structure is simple, and the operation is convenient.

Description

Ultrasonic catheter

Technical Field

The utility model relates to the technical field of interventional catheters, in particular to an ultrasonic catheter.

Background

IVUS catheters require the transmission and reception of ultrasound waves for imaging at high rotational speeds, while at the same time the IVUS catheter must be filled with a mixed solution of saline and heparin sodium. When the ultrasonic wave propagation path is provided with air, imaging cannot be performed, so that the acoustic path of the transducer cannot be provided with air, but the existing IVUS catheter is complex in exhaust operation.

Current IVUS catheters or OCT catheters are typically composed of an internal imaging core and an outer sheath tube. The built-in imaging core and the external sheath tube are fixed together, when the guide wire and the guide wire exchange port are clamped in the clinical use process (generally, when the friction resistance between the guide wire exchange port and the guide wire is large in the withdrawal process, the imaging catheter and the guide wire are clamped, and after the guide wire and the sheath tube are clamped, the guide wire and the sheath tube are bent, so that the catheter cannot be withdrawn), the outer sheath tube can only be slightly moved forward to remove the clamping condition of the guide wire exchange port, but when the clamp is serious, the catheter cannot be withdrawn from a patient, and the life safety of the patient is threatened.

Disclosure of utility model

The utility model aims to provide an ultrasonic catheter which can not cause the problem of catheter locking and is convenient for exhausting air in the catheter.

In order to achieve the above object, the following technical scheme is provided:

An ultrasound catheter, comprising:

The outer tube is provided with a threaded connecting piece and a sheath connecting piece, and the threaded connecting piece and the sheath connecting piece are respectively and fixedly arranged at two ends of the outer tube;

the inner pipe is inserted into one end of the outer pipe, provided with the threaded connecting piece, and can move along the outer pipe, the outer side of the inner pipe is sleeved with a threaded connecting matching piece in threaded connection with the threaded connecting piece, and the threaded connecting matching piece is in sliding connection with the inner pipe;

The sheath pipe, the one end of sheath pipe is inserted and is located in the outer tube is equipped with in the one end of sheath pipe connecting piece, just the sheath pipe with sheath pipe connecting piece fixed connection, the sheath pipe is inserted and is located one end in the outer tube is equipped with the through-hole, the sheath pipe with the outer tube can pass through the through-hole intercommunication.

As an alternative scheme of the ultrasonic catheter, the ultrasonic catheter further comprises a first sealing element, the first sealing element is sleeved on the outer side of the inner tube, and the first sealing element is fixedly connected with the threaded connecting element and/or the threaded connecting matching element.

As an alternative scheme of ultrasonic guide pipe, threaded connection spare is equipped with seal groove and sealed stifled, first sealing member is located in the seal groove, sealed stifled set firmly in the seal groove, with first sealing member support tightly in the seal groove inner wall.

As an alternative scheme of the ultrasonic catheter, the threaded connection matching piece is provided with a sealing groove, the first sealing piece is arranged in the sealing groove, and the threaded connection piece can prop the first sealing piece against the inner wall of the sealing groove.

As an alternative scheme of the ultrasonic catheter, a limiting structure is arranged between the inner tube and the threaded connection matching piece, and the limiting structure can prevent the inner tube from being separated from the outer tube.

As an alternative to the ultrasound catheter, the limiting structure includes:

The first boss is arranged at one end of the inner pipe inserted into the outer pipe;

The second boss is arranged on the threaded connection matching piece, and the second boss can be abutted with the first boss.

As an alternative to the ultrasound catheter, the first boss is integrally formed with the inner tube; or, the first boss is separately arranged with the inner tube and fixedly connected with the inner tube.

As an alternative to an ultrasound catheter, the through hole is located at the junction of the outer tube and the sheath connector.

As an alternative scheme of the ultrasonic catheter, the other end of the inner tube is provided with a system connecting component for connecting an ultrasonic system, the system connecting component comprises a shell, a second sealing element and a rigid tube, one end of the rigid tube is positioned in the shell, the other end of the rigid tube is connected with the inner tube, the second sealing element is fixedly arranged in the shell, and the second sealing element is sleeved and held tightly on the outer side of the rigid tube.

As the alternative scheme of ultrasonic conduit, system coupling assembling still includes the seal seat, the seal seat set firmly in the casing, the one end of seal seat is equipped with the seal groove, the second sealing member set firmly in the seal groove.

Compared with the prior art, the utility model has the beneficial effects that:

According to the ultrasonic catheter, the inner tube and the outer tube are in threaded connection with the threaded connection matching piece through the threaded connection matching piece, once the problem that the catheter is clamped in the clinical use process, the inner tube and the outer tube are convenient to detach in time, the important safety problems that the catheter cannot be withdrawn from a patient and the like are avoided, and air in the catheter can be rapidly discharged through the through hole in the sheath tube, so that the structure is simple, and the operation is convenient.

Drawings

FIG. 1 is a schematic view of an ultrasound catheter according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a threaded connection and a threaded connection mating member according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram showing the connection relationship between an inner pipe and an outer pipe in an embodiment of the present utility model;

FIG. 4 is an enlarged view at A of FIG. 3;

FIG. 5 is a schematic diagram showing the connection relationship between the outer tube and the sheath tube in the embodiment of the utility model;

FIG. 6 is an enlarged view at B of FIG. 5;

Fig. 7 is a schematic structural diagram of a system connection component according to an embodiment of the present utility model.

Reference numerals:

1. An outer tube; 11. a threaded connection; 111. sealing grooves; 112. sealing and plugging; 12. a sheath connector; 121. a first stress relief component; 2. an inner tube; 21. a threaded connection fitting; 211. a second boss; 22. a first boss; 3. a sheath; 31. a sheath tip; 32. a through hole; 4. a first seal; 5. a system connection assembly; 51. a housing; 511. a second stress relief assembly; 52. a second seal; 53. a rigid tube; 54. and a sealing seat.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, 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.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1-7, the embodiment provides an ultrasonic catheter, which comprises an outer tube 1, an inner tube 2 and a sheath tube 3, wherein the outer tube 1 is provided with a threaded connector 11 and a sheath tube connector 12, and the threaded connector 11 and the sheath tube connector 12 are respectively fixedly arranged at two ends of the outer tube 1; one end of the inner tube 2 is inserted into one end of the outer tube 1 provided with a threaded connector 11 and can move along the outer tube 1, a threaded connector matching piece 21 in threaded connection with the threaded connector 11 is sleeved on the outer side of the inner tube 2, and the threaded connector matching piece 21 is in sliding connection with the inner tube 2; one end of the sheath tube 3 is inserted into one end of the outer tube 1 provided with the sheath tube connecting piece 12, the sheath tube 3 is fixedly connected with the sheath tube connecting piece 12, and the other end of the sheath tube 3 is provided with a sheath tube 3 tip; the sheath 3 is connected to the sheath connector 12 through a first stress releasing component 121, where the first stress releasing component 121 is a stress releasing component in the prior art, and is not described herein; one end of the sheath tube 3 inserted into the outer tube 1 is provided with a through hole 32, and the sheath tube 3 and the outer tube 1 can be communicated through the through hole 32.

The inner tube 2 and the outer tube 1 are in threaded connection with the threaded connection matching piece 21 through the threaded connection piece 11, once the problem that the catheter is clamped occurs in the clinical use process, the inner tube 2 and the outer tube 1 are convenient to detach in time, the great safety problems that the catheter cannot be withdrawn from a patient body and the like cannot occur, and air in the catheter can be rapidly discharged through the through hole 32 on the sheath tube 3, so that the structure is simple, and the operation is convenient.

It should be noted that the number of the through holes 32 may be one or more, and the specific number may be set according to the requirement, which is not limited herein.

Optionally, the through hole 32 is located at the connection between the outer tube 1 and the sheath connector 12, so as to avoid the air-holding at the connection between the outer tube 1 and the sheath 3.

In this embodiment, the threaded connection member 11 is a bolt, and the bolt is sleeved on the outer side of the outer tube 1 and is fixedly connected with the outer tube 1; the threaded connection fitting 21 is a nut, the nut is sleeved on the outer side of the inner tube 2 and is in sliding connection with the inner tube 2, and when the bolt and the nut are screwed, the inner tube 2 can still move relative to the outer tube 1 along the axial direction of the outer tube 1. The outer tube 1 and the inner tube 2 are detachably connected in a bolt and nut screwed mode, so that the connection stability is high, the assembly and the disassembly are easy, and the operability is stronger. Of course, in other embodiments, bolts may be provided to the inner tube 2 and nuts may be provided to the outer tube 1.

Optionally, the ultrasound catheter further comprises a first sealing element 4, the first sealing element 4 is sleeved on the outer side of the inner tube 2, and in this embodiment, the first sealing element 4 is fixedly connected with the threaded connecting piece 11. The first sealing member 4 can seal the gap between the inner tube 2 and the outer tube 1, but does not affect the movement of the inner tube 2 along the outer tube 1.

Specifically, the threaded connection 11 is provided with a sealing groove 111 and a sealing plug 112, the first sealing element 4 is arranged in the sealing groove 111, and the sealing plug 112 is fixedly arranged in the sealing groove 111 so as to tightly prop the first sealing element 4 against the inner wall of the sealing groove 111, so that the first sealing element 4 can tightly hold the inner tube 2, and the leakage of the mixed solution in the ultrasonic catheter from a gap between the inner tube 2 and the outer tube 1 is avoided.

Of course, in other embodiments, the first sealing element 4 can also be fixedly connected to both the threaded connection 11 and the threaded connection fitting 21. Specifically, the threaded connection fitting 21 is provided with a sealing groove 111, the first sealing member 4 is arranged in the sealing groove 111, the threaded connection fitting 11 can tightly support the first sealing member 4 on the inner wall of the sealing groove 111, in other words, after the threaded connection fitting 21 is tightly screwed with the threaded connection fitting 11, the threaded connection fitting 11 can tightly support the first sealing member 4, so that the first sealing member 4 is clamped between the threaded connection fitting 21 and the threaded connection fitting 11, the first sealing member 4 can tightly hold the inner tube 2, and can not move along with the inner tube 2, and tightness is ensured.

In other embodiments, the first seal 4 may also be secured to the threaded connection fitting 21. Illustratively, the threaded connection fitting 21 is provided with a mounting groove in which the first seal 4 is secured by means of bonding or welding or the like.

Optionally, a limiting structure is arranged between the inner tube 2 and the threaded connection matching piece 21, and the limiting structure can prevent the inner tube 2 from being separated from the outer tube 1, so that the problem that the inner tube 2 is accidentally separated when the inner tube 2 moves along the outer tube 1 is avoided.

Illustratively, the limiting structure comprises a first boss 22 and a second boss 211, wherein the first boss 22 is arranged at one end of the inner tube 2, which is inserted into the outer tube 1; the second boss 211 is arranged on the threaded connection matching piece 21, the second boss 211 can be abutted with the first boss 22, the structure is simple, the limiting effect on the inner tube 2 can be achieved, and other structure settings can not be influenced. In this embodiment, the first boss 22 is an annular boss protruding from the outer wall of the inner tube 2, and the second boss 211 is an annular boss protruding from the inner peripheral wall of the threaded connection fitting 21, which is easy to process, and is more reliable in abutment and stable in limitation.

Alternatively, the first boss 22 is integrally formed with the inner tube 2. Illustratively, the inner tube 2 may be subjected to a partial heat-fusion treatment by a heat-fusion mold to form an annular first boss 22 at the outer periphery of the inner tube 2. Thus, the operation is simple, and the connection stability of the first boss 22 and the inner tube 2 is good.

Of course, in other embodiments, the first boss 22 may be separately disposed and fixedly connected with the inner tube 2, which is easy to process. For example, the first boss 22 may be formed by sleeving a sleeve on the outer side of the inner tube 2 and adhering and fixing the sleeve and the inner tube 2, or by applying glue on the outer side of the inner tube 2 and curing and forming the first boss 22.

Optionally, the other end of the inner tube 2 is provided with a system connection assembly 5 for connecting an ultrasonic system, the system connection assembly 5 comprises a shell 51, a second sealing element 52 and a rigid tube 53, one end of the rigid tube 53 is positioned in the shell 51, the other end of the rigid tube 53 is connected with the inner tube 2, the second sealing element 52 is fixedly arranged in the shell 51, and the second sealing element 52 is sleeved and held tightly on the outer side of the rigid tube 53. The second seal 52 ensures tightness of the system connection assembly 5, preventing damage to the drive mechanism due to liquid entering the ultrasound system. Optionally, the inner tube 2 is connected to the housing 51 by a second stress relief assembly 511. The second stress relief assembly 511 is a stress relief assembly of the prior art, and will not be described herein.

The rigid tube 53 is illustratively a steel tube, although in other embodiments, the rigid tube 53 may be formed from other materials, as not limited herein.

Optionally, the system connection assembly 5 further includes a sealing seat 54, the sealing seat 54 is fixedly disposed in the housing 51, one end of the sealing seat 54 is provided with a mounting groove, and the second sealing member 52 is fixedly disposed in the mounting groove, so that the second sealing member 52 is convenient to be disassembled and assembled. For example, the sealing seat 54 may be adhered and fixed in the housing 51 by using an adhesive such as welding or glue, so that the operation is convenient.

Optionally, the first seal 4 is a sealing ring; the second seal 52 is a seal ring. The sealing ring has simple structure and low cost, is beneficial to simplifying the structure of the ultrasonic catheter and reduces the cost.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. An ultrasound catheter, comprising:

The outer tube (1), the outer tube (1) is provided with a threaded connecting piece (11) and a sheath connecting piece (12), and the threaded connecting piece (11) and the sheath connecting piece (12) are respectively fixedly arranged at two ends of the outer tube (1);

The inner pipe (2), one end of the inner pipe (2) is inserted into one end of the outer pipe (1) provided with the threaded connecting piece (11) and can move along the outer pipe (1), a threaded connecting matching piece (21) in threaded connection with the threaded connecting piece (11) is sleeved on the outer side of the inner pipe (2), and the threaded connecting matching piece (21) is in sliding connection with the inner pipe (2);

Sheath pipe (3), the one end of sheath pipe (3) is inserted and is located in outer tube (1) is equipped with in the one end of sheath pipe connecting piece (12), just sheath pipe (3) with sheath pipe connecting piece (12) fixed connection, the one end of sheath pipe (3) is inserted and is located in outer tube (1) is equipped with through-hole (32), sheath pipe (3) with outer tube (1) can pass through-hole (32) intercommunication.

2. The ultrasound catheter according to claim 1, further comprising a first sealing element (4), the first sealing element (4) being arranged around the outside of the inner tube (2), the first sealing element (4) being fixedly connected with the threaded connection (11) and/or the threaded connection fitting (21).

3. The ultrasonic catheter according to claim 2, wherein the threaded connection (11) is provided with a sealing groove (111) and a sealing plug (112), the first sealing element (4) is arranged in the sealing groove (111), and the sealing plug (112) is fixedly arranged in the sealing groove (111) so as to tightly press the first sealing element (4) against the inner wall of the sealing groove (111).

4. The ultrasonic catheter according to claim 2, characterized in that the threaded connection fitting (21) is provided with a sealing groove (111), the first sealing element (4) is provided in the sealing groove (111), and the threaded connection (11) is capable of abutting the first sealing element (4) against the inner wall of the sealing groove (111).

5. The ultrasound catheter according to claim 1, wherein a limit structure is provided between the inner tube (2) and the threaded connection fitting (21), which limit structure can prevent the inner tube (2) from coming out of the outer tube (1).

6. The ultrasound catheter of claim 5, wherein the limit structure comprises:

The first boss (22) is arranged at one end of the inner tube (2) inserted into the outer tube (1);

and the second boss (211) is arranged on the threaded connection matching piece (21), and the second boss (211) can be abutted with the first boss (22).

7. The ultrasound catheter according to claim 6, wherein the first boss (22) is integrally formed with the inner tube (2); or, the first boss (22) and the inner tube (2) are arranged in a split mode and fixedly connected.

8. The ultrasound catheter according to claim 1, wherein the through hole (32) is located at the junction of the outer tube (1) and the sheath connector (12).

9. The ultrasonic catheter according to claim 1, wherein the other end of the inner tube (2) is provided with a system connection assembly (5) for connecting an ultrasonic system, the system connection assembly (5) comprises a shell (51), a second sealing member (52) and a rigid tube (53), one end of the rigid tube (53) is positioned in the shell (51), the other end of the rigid tube is connected with the inner tube (2), the second sealing member (52) is fixedly arranged in the shell (51), and the second sealing member (52) is sleeved and held tightly outside the rigid tube (53).

10. The ultrasonic catheter of claim 9, wherein the system connection assembly (5) further comprises a sealing seat (54), the sealing seat (54) is fixedly arranged in the shell (51), one end of the sealing seat (54) is provided with a sealing groove (111), and the second sealing piece (52) is fixedly arranged in the sealing groove (111).