CN217697623U

CN217697623U - Bendable double-cavity sheath tube and guide sheath

Info

Publication number: CN217697623U
Application number: CN202220910569.1U
Authority: CN
Inventors: 陈胜华; 方国成; 方潇; 洪启龙; 姚彤; 朱培根
Original assignee: TONGLU JINGRUI MEDICAL DEVICES CO Ltd
Current assignee: TONGLU JINGRUI MEDICAL DEVICES CO Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-11-01
Anticipated expiration: 2032-04-18

Abstract

The utility model provides a flexible two-chamber sheath pipe is equipped with first lumen and the second lumen that cuts off each other, and flexible two-chamber sheath pipe is equipped with the flexible pipe that can bending deformation, and at least first lumen extends to in the flexible pipe. A supporting part is arranged in the pipe wall of the first pipe cavity and extends spirally along the axial direction of the first pipe cavity. In this scheme, be provided with the supporting part in the bendable pipe, the supporting part can play the function of the pipe wall of support bendable pipe, prevents that the inside first lumen is plugged up when the bendable part warp. The utility model also provides a guide sheath, included above-mentioned flexible two-chamber sheath pipe.

Description

Bendable double-cavity sheath tube and guide sheath

Technical Field

The utility model relates to the field of medical equipment, specifically include a flexible two-chamber sheath pipe to and a guide sheath.

Background

The guide sheath is a very common medical apparatus and has a function of inserting a sheath into a human body, and then inserting probes of various medical apparatuses into a lumen of the sheath, thereby realizing the function of inserting the probes into the human body.

With the development of the technology, the functions required to be undertaken by the sheath of the introducer sheath become more and more complex. There is a sheath comprising two isolated first and second lumens, wherein the second lumen is smaller than the first lumen, the second lumen is typically used for pressure sensing, and the larger first lumen can be used as a soft lens channel or a lithotomy channel. However, since the structure in the human body is complicated, it is required that the end of the sheath tube is bent in one piece so as to be inserted into the internal organs in the human body. The bendable sheath has a problem that the total diameter of the sheath is small, and the sheath is divided into a first lumen and a second lumen, so that the first lumen and the second lumen are easily blocked along with the deformation of the sheath when the sheath is bent, and the lumen cannot perform normal functions.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in the existing double-cavity sheath tube, because the diameter of the sheath tube is smaller, the cavity is easily blocked and cannot play the function in the bending process of the sheath tube.

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

the utility model provides a flexible two-chamber sheath pipe is equipped with first lumen and the second lumen that cuts off each other, and flexible two-chamber sheath pipe is equipped with the flexible pipe that can bending deformation, and is at least first lumen extends to in the flexible pipe, be provided with the supporting part in the pipe wall of first lumen, the supporting part is followed the axial of flexible pipe is the heliciform and extends.

Preferably, the second lumen extends into the bendable tube; the supporting part comprises a supporting part, the supporting part comprises a main body part and a plurality of ring sleeve parts, and the main body part is arranged in the first pipe cavity and positioned in the pipe wall of the part of the bendable pipe and extends spirally along the axial direction of the first pipe cavity; the ring sleeve parts are fixedly connected with the main body part, and the ring sleeve parts are arranged in the pipe wall of the part of the second pipe cavity, which is positioned in the bendable pipe, and encircle the second pipe cavity.

Further, the tube wall of the second lumen protrudes outwards relative to the tube wall of the first lumen.

Preferably, the second lumen extends into the bendable tube; the supporting part comprises a first supporting spring and a second supporting spring, the first supporting spring is arranged inside the pipe wall of the part of the first pipe cavity located in the bendable pipe, and the second supporting spring is arranged inside the pipe wall of the part of the second pipe cavity located in the bendable pipe.

Further, the first supporting spring and the second supporting spring are mutually abutted and arranged at intervals, and the part of the second supporting spring close to the first supporting spring is accommodated in the gap of the first supporting spring.

Preferably, the second lumen is received within the first lumen.

Preferably, the bendable double-cavity sheath tube is further provided with a fixing tube, the bendable tube is fixedly connected with the fixing tube, and the first tube cavity extends into the fixing tube; the second lumen is disposed within the fixed tube and extends to a junction of the fixed tube and the bendable tube.

Preferably, the second lumen surface is provided with a plurality of pressure taps, and the pressure taps are close to the free end of the bendable pipe.

Furthermore, a plurality of pressure measuring holes are formed in the surface of the second pipe cavity, and the pressure measuring holes are close to the junction position of the bendable pipe and the fixed pipe.

The advantage of above-mentioned scheme lies in, the supporting part can play the function of support pipe wall in the crooked in-process of flexible pipe, leads to when preventing that the pipe wall bending deformation leads to being located the first lumen in the flexible pipe to be blockked up. The support part which extends in a spiral shape can not interfere the normal bending of the bendable pipe, so the normal work of the bendable double-cavity sheath pipe can not be realized. The second lumen can also extend into the bendable pipe, and the second lumen can be prevented from being blocked only by arranging the supporting part in the second lumen correspondingly.

In one preferred embodiment, the second lumen is only arranged in the fixed tube and does not extend into the bendable tube, on one hand, the process is simpler, and the support part only needs to be arranged in the tube wall of the first lumen to prevent the first lumen from being blocked; on the other hand, the second lumen usually has a pressure measuring function, and does not need to reach a specific part to be measured, but only needs to be close to the specific part to be measured.

The utility model also provides a guide sheath, be equipped with arbitrary one flexible two-chamber sheath pipe.

Drawings

FIG. 1 is a schematic view of a first preferred embodiment of a flexible double lumen sheath;

FIG. 2 is a structural view of the port location of the first embodiment;

FIG. 3 is a structural view of the support member;

FIG. 4 is a schematic view of a second preferred embodiment of a flexible double lumen sheath;

FIG. 5 is a structural view showing the port position of the second embodiment;

FIG. 6 is a schematic view of the arrangement of the first support spring and the second support spring;

FIG. 7 is a schematic view of the first support spring and the second support spring;

FIG. 8 is a schematic view of a third preferred embodiment of a flexible double lumen sheath;

FIG. 9 is a schematic view showing a cutting position in the third embodiment;

FIG. 10 isbase:Sub>A schematic view taken along section A-A of FIG. 9;

FIG. 11 is a schematic view taken along section B-B of FIG. 9;

description of reference numerals: 1-first lumen, 11-bendable tube, 12-fixed tube, 2-second lumen, 21-pressure tap, 3-support member, 31-main body, 32-ring, 41-first support spring, 42-second support spring

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within the two elements; the terms may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the terms in the present invention in specific situations.

The present application provides three specific embodiments of a bendable double-lumen sheath, wherein the structure of the first embodiment is as shown in fig. 1 to 3, and in the first embodiment, the bendable double-lumen sheath is provided with a bendable tube 11, and the bendable tube 11 is made of materials such as soft glue, and can be bent and deformed when being subjected to an external traction force, thereby realizing a bendable function. The bendable pipe 11 is respectively provided with a first pipe cavity 1 and a second pipe cavity 2, and the first pipe cavity 1 and the second pipe cavity 2 are mutually separated. A supporting member 3 is arranged in the tube wall of the bendable tube 11, the supporting member 3 includes a main body portion 31 and a ring sleeve portion 32, wherein the main body portion 31 is arranged in the tube wall of the first lumen 1, and the main body portion 31 extends spirally along the axial direction of the first lumen 1, forming a structure similar to a spring. The ring sleeve part 32 comprises a plurality of ring sleeve parts 32, the ring sleeve parts 32 are fixedly connected with the main body part 31, the ring sleeve parts 32 are arranged inside the pipe wall of the second pipe cavity 2 and surround the second pipe cavity 2, and the ring sleeve parts 32 have the function of supporting the second pipe cavity 2.

In this embodiment, the main body portion 31 can support the wall of the first lumen 1, and functions to prevent the first lumen 1 from being clogged in the process of bending the bendable pipe 11. Further, the spring does not hinder the bendable pipe 11 from bending deformation due to the characteristics of the spring, and therefore the body portion 31 does not interfere with the normal deformation of the bendable pipe 11. The ring sleeve part 32 has a function of supporting the wall of the second lumen 2, and effectively prevents the second lumen 2 from being blocked. Since the ring parts 32 are independent bodies, and due to the nature of the spring structure of the main body part 31, a certain gap is formed between the adjacent ring parts 32, the ring parts 32 do not interfere with the bending of the wall of the second lumen 2. In conclusion, the first embodiment has the beneficial effects that the first lumen 1 and the second lumen 2 can be prevented from being blocked when the bendable pipe 11 is bent, and the normal bending of the bendable pipe 11 can not be influenced. The support member 3 may be formed by laser cutting a length of steel pipe.

In the first embodiment, the second lumen 2 is located outside the first lumen 1, the inner wall of the second lumen 2 protrudes a part of the first lumen 1, and the second lumen 2 and the first lumen 1 are adjacent to each other. In this design, the processing method of the collar portion 32 is simpler, which contributes to making the processing process of the entire support member 3 simpler.

The second embodiment is similar to the first embodiment in that a bendable pipe 11 is provided, and the first lumen 1 and the second lumen 2 extend into the bendable pipe 11, as shown in fig. 4 to 7. The difference from the first embodiment is that the support part in the second embodiment comprises a first support spring 41 and a second support spring 42, wherein the first support spring 41 is arranged inside the tube wall of the first lumen 1, and the second support spring 42 is arranged inside the tube wall of the second lumen. The first supporting spring 41 and the second supporting spring 42 both have the functions of supporting the tube wall and preventing the tube wall from deforming, and the first tube cavity 1 and the second tube cavity 2 can not be blocked when the bendable tube 11 is bent. Second embodiment, in the manufacturing process, the first supporting spring 41 and the second supporting spring 42 may be laser cut, and then the second supporting spring 42 may be placed in the first supporting spring 41 and then encapsulated.

In the second embodiment, it is preferable that, as shown in fig. 6, the first supporting spring 41 and the second supporting spring 42 abut against each other, and the first supporting spring 41 and the second supporting spring 42 are arranged at a distance from each other. The specific meaning of the interval arrangement is that, as shown in fig. 6, the mutually close portions of the second support spring 42 and the first support spring 41 are just accommodated in the gap of the first support spring 41, and similarly, the mutually close portion of the first support spring 41 and the second support spring 42 is also accommodated in the gap of the second support spring 42, so that the two are not in contact with each other and do not interfere with each other when bending, thereby avoiding the problem that the bendable pipe 11 cannot be bent due to the mutual clamping of the first support spring 41 and the second support spring 42. Moreover, with such an arrangement, the first lumen 1 and the second lumen 2 can be made to approach each other as much as possible, and even the second lumen 2 is directly provided in the first lumen 1, thereby making the bendable pipe 11 more compact in structure.

In the second embodiment, the bendable pipe 11 is further connected with a fixed pipe 12, the fixed pipe 12 is made of a relatively hard material and is inflexible during use, for example, the fixed pipe 12 can be made by steel pipe encapsulation. Both the first lumen 1 and the second lumen 2 extend inside the fixed tube 12. Since the fixed tube 12 is not required to be deformable, the first lumen 1 and the second lumen 2 are located in the wall of the fixed tube 12 portion without providing a support portion. In this scheme, regarding the processing of the bendable pipe 11, a section of steel pipe may be selected first, and then the support portion may be laser-cut on the steel pipe, and a certain length of steel pipe may be retained. And then, wrapping the supporting part with soft glue, and wrapping the residual steel pipe with hard glue, or directly using the residual steel pipe as the fixed pipe 12 without wrapping the steel pipe with hard glue. This enables the production of the bendable pipe 11 and the fixed pipe 12.

Of course, the first embodiment may also be connected with a fixed pipe 12.

The third embodiment has a structure as shown in fig. 8 to 11, and includes a bendable tube 11 and a fixed tube 12, but in the third embodiment, the first lumen 1 is disposed in both the bendable tube 11 and the fixed tube 12, but the second lumen 2 is disposed only in the fixed tube 12 and extends to the junction position of the fixed tube 12 and the bendable tube 11, and the second lumen 2 does not extend into the bendable tube 11. In the first lumen 1 and the second lumen 2, the portions of the fixed tube 12 that are located inside the tube do not need to be bent, and therefore, a spring-like support portion is not required to be provided in the tube wall. In view of the fact that the bendable tube 11 needs to be bent, the support portion may be preferably a spring for preventing the first lumen 1 from being blocked, and the support portion may be disposed in the wall of the first lumen 1 located in the bendable tube 11. As shown in fig. 9 and 10, the second lumen 2 does not extend into the bendable pipe 11, and the first lumen 1 extends from the fixed pipe 12 into the bendable pipe 11.

The beneficial effects of the third embodiment are that, considering that the second lumen 2 is usually as the pressure measuring pipe, and the test of pressure need not accurately reach the position to be tested, the pressure that only needs to be close to the position to be tested test just can satisfy the demands, at this moment, even the second lumen 2 does not extend to and also can be close to the position to be tested in the bendable pipe 11, therefore just need not set up in fixed pipe 12 at second lumen 2 can, avoided leading to the problem appearance that second lumen 2 is blocked because the bending of sheath pipe completely, effectively simplified process flow. In contrast, in the first lumen 1, since the diameter of the first lumen 1 is large, it is simpler to provide a support portion in the wall of the first lumen 1 than the second lumen 2.

In addition, in the first, second, and third embodiments, in order to facilitate the second lumen 2 to realize the pressure measurement function, a plurality of pressure measurement holes 21 are disposed on the tube wall of the second lumen 2. The way and size of the pressure measuring holes 21 are opened belongs to the prior art, and will not be described herein. In the third embodiment, the pressure measuring hole 21 is disposed at a position close to the boundary between the fixed tube 12 and the bendable tube 11, so that the pressure measuring hole 21 is as close as possible to the site to be measured.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a flexible two-chamber sheath pipe is equipped with first lumen (1) and second lumen (2) that separate each other, its characterized in that, flexible two-chamber sheath pipe is equipped with flexible pipe (11) that can bending deformation, at least first lumen extends to in the flexible pipe, be provided with the supporting part in the pipe wall of flexible pipe, the supporting part is followed the axial of flexible pipe is the heliciform and extends.

2. The bendable dual-lumen sheath of claim 1, wherein the second lumen extends into the bendable tube; the supporting part comprises a supporting part (3), the supporting part comprises a main body part (31) and a plurality of ring sleeve parts (32), the main body part is arranged in the first pipe cavity and extends to the inner part of the pipe wall of the bendable pipe, and the main body part extends spirally along the axial direction of the first pipe cavity; the ring sleeve parts are fixedly connected with the main body part, the ring sleeve parts are arranged in the second pipe cavity and extend to the inner part of the pipe wall of the inner part of the bendable pipe, and the ring sleeve parts surround the second pipe cavity.

3. The flexible dual lumen sheath of claim 2, wherein the wall of the second lumen is outwardly convex relative to the wall of the first lumen.

4. The bendable dual-lumen sheath of claim 1, wherein the second lumen extends into the bendable tube; the supporting part comprises a first supporting spring (41) and a second supporting spring (42), the first supporting spring is arranged inside the pipe wall of the first pipe cavity extending to the inside of the bendable pipe, and the second supporting spring is arranged inside the pipe wall of the second pipe cavity extending to the inside of the bendable pipe.

5. The flexible dual lumen sheath of claim 4, wherein said first support spring and said second support spring are closely spaced and disposed with a portion of said second support spring adjacent said first support spring being received within a gap in said first support spring.

6. The flexible dual lumen sheath of claim 4, wherein the second lumen is located within the first lumen.

7. The bendable double-lumen sheath according to claim 1, further comprising a fixed tube (12), wherein the bendable tube is fixedly connected to the fixed tube, and the first lumen extends into the fixed tube; the second lumen is disposed within the fixed tube and extends to a junction of the fixed tube and the bendable tube.

8. The bendable dual-lumen sheath according to any one of claims 1-6, wherein the second lumen surface is provided with a plurality of pressure taps (21) near the free end of the bendable tube.

9. The bendable dual-lumen sheath according to claim 7, wherein the second lumen surface is provided with a plurality of pressure taps (21) near the interface between the bendable tube and the fixed tube.

10. An introducer sheath provided with a flexible double lumen sheath according to any one of claims 1 to 9.