CN111012288B

CN111012288B - Integrated composite pipe

Info

Publication number: CN111012288B
Application number: CN201911397786.4A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2025-01-07
Anticipated expiration: 2039-12-30
Also published as: WO2021136289A1; CN111012288A

Abstract

The present invention discloses an integrated composite pipe, the inner layer includes a threaded pipe and a snake-bone chain, one end of the threaded pipe and the snake-bone chain are hinged; the coating layer is sleeved on the outer side of the inner layer and adopts a woven mesh; the outer layer is wrapped on the outer side of the coating layer. The threaded pipe of the present invention adopts different parts of large pitch and small pitch to change the hardness and softness of the composite pipe; the alternating use of flat wire and round wire ensures the transmission and coaxiality of the inner pipe; the snake-bone chain part does not adopt the welding method, but adopts the hinged method; the technical solution proposed in the present invention is easy to assemble and has low cost.

Description

Integrated composite pipe

Technical Field

The invention relates to the technical field of medical instruments, in particular to an integrated composite tube used on an instrument.

Background

With the development of modern science and technology, the endoscope is thoroughly reformed, and optical fibers are used. The fiber endoscope can also be used for in vivo assays such as measuring in vivo temperature, pressure, displacement, spectral absorption, and other data.

The fiber optic endoscope is an elongated flexible tube having a bundle of light-conducting glass fibers therein, with a lens at each end. When in examination, one end of the tube is inserted into the organ to be examined in the human body, and the condition in the organ can be seen from the other end. Endoscopes are often accompanied by illumination sources, some of which are also equipped with instruments, such as lasers, for performing surgical treatments. Optical fibers are introduced into the light transmission mechanism, and video shots become the first choice for image capturing. The appearance of modern video endoscopes, electronic endoscopes and ultrasonic endoscopes opens up a new era of endoscopes of modern medical endoscopes, and the modern medical endoscopes enter the times of treatment and operation from the times of examination and diagnosis.

However, the current pipeline used on the endoscope has the defects of high cost due to the need of import, constant density of the threaded pipe inside the pipeline in the prior art, and integral molding of PU.

Thus, the composite tube of the prior art has several problems:

The internal threaded tube is not divided into a plurality of densities, so that the composite tube is hard when the composite tube cannot be hard, and the soft part is softer, so that if the endoscope is used, the composite tube is too tightly pulled, and the composite tube is broken;

Because the PU layer is adopted in the prior art, the force transmission performance and the coaxiality are not high;

in the prior art, the snake bone chain part is integrally formed, welding is adopted before the snake bone chain part, the precision is not high, the welding part is relatively fine, and the snake bone chain part is easy to fall off when the welding is not good;

the cost of the prior art is high.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.

The present invention has been made in view of the above and/or problems occurring in the prior art.

It is therefore an object of the present invention to provide an integrated composite tube.

The technical scheme is that the integrated composite pipe comprises an inner layer, a cladding layer and an outer layer, wherein the inner layer comprises a threaded pipe and a snake bone chain, one ends of the threaded pipe and the snake bone chain are hinged, the cladding layer is sleeved on the outer side of the inner layer and is made of a woven net, and the outer layer is wrapped on the outer side of the cladding layer.

As a preferable scheme of the integrated composite pipe, the threaded pipe comprises a small-pitch pipe, a large-pitch pipe and a circular ring pipe, wherein the three pipes are integrated, and the circular ring pipe is hinged with the snake bone chain.

As a preferable scheme of the integrated composite pipe, the cladding layer comprises a round wire woven net and a flat wire woven net, wherein the round wire woven net is sleeved outside the snake bone chain and the local outside of the large-pitch pipe, and the flat wire woven net is sleeved outside the small-pitch pipe and the local outside of the large-pitch pipe.

As a preferable scheme of the integrated composite pipe, the round wire mesh grid is sleeved on the outer side of the large-pitch pipe in a length of nine tenth, and the flat wire mesh grid is sleeved on the outer side of the large-pitch pipe in a length of one tenth.

As a preferable scheme of the integrated composite pipe, the outer layer comprises a heat shrinkage pipe, and the heat shrinkage pipe is coated on the outer side of the coating layer.

As a preferable scheme of the integrated composite pipe, the outer layer further comprises a bending elastomer, the bending elastomer is coated on the outer side of the round wire mesh grid, and the heat shrinkage pipe is coated on the outer side of the flat wire mesh grid and the local outer side of the round wire mesh grid.

As a preferable scheme of the integrated composite pipe, the heat-shrinkable pipe is coated on one fifth of the length of the large-pitch pipe.

As a preferable scheme of the integrated composite pipe, the coating layer is made of stainless steel, nickel titanium, aluminum or copper.

As a preferable scheme of the integrated composite pipe, the heat-shrinkable pipe adopts TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC, PET or one of the following materials.

As a preferable scheme of the integrated composite pipe, the bending elastomer is prepared by mixing one or more composite materials of silica gel, rubber, fluororubber and PEBAX, PTFE, TPU, TPE.

The invention has the beneficial effects that:

the threaded pipe adopts the parts with different large screw pitches and small screw pitches, so that the hardness degree of the composite pipe is changed;

The flat wires and the round wires are used alternately, so that the transmissibility and the coaxiality of the inner part are ensured;

the snake bone chain part is not welded and is hinged;

The technical scheme provided by the invention is convenient to assemble and low in cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic partial cross-sectional view of the overall structure of one embodiment provided by the integrated composite tube provided by the present invention;

fig. 2 is a schematic view of the overall structure of the threaded pipe according to an embodiment of the present invention.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 and 2, the present invention provides an integral type composite pipe, in a first embodiment of the present invention, a body of which includes an inner layer 100, a coating layer 200, and an outer layer 300, the coating layer 200 is coated on the outer layer of the inner layer 100, and the outer layer 300 is coated on the outer side of the coating layer 200.

Specifically, the inner layer 100 includes a threaded tube 101 and a snake bone chain 102, and one ends of the threaded tube 101 and the snake bone chain 102 are hinged.

In the prior art, the snake bone chain is integrally formed, and the welding is adopted before the snake bone chain part, so that the precision is not high, the welding part is relatively fine, and the welding is not good, and the snake bone chain is easy to drop, so that in the embodiment, the snake bone chain 102 is not welded, and a hinge mode is adopted.

It should be noted that the internal threaded tube does not distinguish between the bulk density, so that it is possible that the composite tube is hard when it cannot be made hard, and the soft portion is soft, resulting in a situation where the composite tube breaks if the endoscope is pulled too tightly. Because the larger the pitch is, the softer the state of the pitch tube is, the more easily the bending is generated, and the elasticity is larger, in the endoscope used, if the whole composite tube is very soft, the bending of the tail end cannot be realized, so that the situation in different directions is seen, and if the whole composite tube is very hard, the composite tube is easily broken when the bending looks at the problems in all directions. Thus, the threaded pipe 101 includes a small pitch pipe 101a, a large pitch pipe 101b and a circular pipe 101c, and the circular pipe 101c is hinged to the snake bone chain 102.

It should be noted that the pitch of the small pitch tube 101a is smaller than the pitch of the large pitch tube 101b, but the width of each section of the threaded tube of the small pitch tube 101a is larger than the width of each section of the threaded tube, so that the hardness of the portion of the small pitch tube 101a is larger than that of the portion of the large pitch tube 101 b.

For example, when the integrated composite tube is applied to an endoscope and the composite tube is inserted into the intestines and stomach of a human body, bending is required at the tail end of the composite tube because the excellent state of the intestines and stomach needs to be checked. When the large pitch tube 101b is bent, the small pitch tube 101a is also bent, and the bending effect is not achieved. Therefore, with the above embodiment, the ease of bending of the small pitch tube 101a can be made smaller than the ease of bending of the large pitch tube 101 b.

The coating layer 200 is sleeved on the outer side of the inner layer 100, and is coated on the outer layer of the inner layer 100 by adopting a woven mesh, so as to play a role in protection.

The outer layer 300 is wrapped on the outer side of the wrapping layer 200, so that the lubricity of the composite tube is ensured, and the intestines and stomach of a human body are not cut due to roughness after the composite tube extends into the intestines and stomach of the human body.

Preferably, the coating 200 is made of stainless steel, nitinol or copper.

Example 2

Referring to fig. 1 and 2, the present invention provides a second embodiment of an integral composite tube, which is different from the first embodiment in that in the present embodiment, the coating layer 200 includes two different woven meshes, i.e., a round wire woven mesh 201 and a flat wire woven mesh 202.

Specifically, the body of the integral composite pipe comprises an inner layer 100, a coating layer 200 and an outer layer 300, wherein the coating layer 200 is coated on the outer layer of the inner layer 100, and the outer layer 300 is coated on the outer side of the coating layer 200.

The inner layer 100 comprises a threaded pipe 101 and a snake bone chain 102, wherein one ends of the threaded pipe 101 and the snake bone chain 102 are hinged. The threaded pipe 101 comprises a small-pitch pipe 101a, a large-pitch pipe 101b and a circular pipe 101c, wherein the small-pitch pipe, the large-pitch pipe and the circular pipe are integrated, and the circular pipe 101c is hinged with the snake bone chain 102.

Preferably, the pitch of the small pitch tube 101a is smaller than the pitch of the large pitch tube 101b, but the width of each section of the threaded tube of the small pitch tube 101a is greater than the width of each section of the threaded tube, so that the hardness of the portion of the small pitch tube 101a is greater than the portion of the large pitch tube 101 b. Therefore, with the above embodiment, the ease of bending of the small pitch tube 101a can be made smaller than the ease of bending of the large pitch tube 101 b.

The coating layer 200 is sleeved on the outer side of the inner layer 100, and is coated on the outer layer of the inner layer 100 by adopting a woven mesh, so that a secondary protection effect is achieved.

Preferably, the coating layer 200 includes a circular wire mesh grid 201 and a flat wire mesh grid 202, the circular wire mesh grid 201 is sleeved outside the snake bone chain 102 and outside the large pitch pipe 101b, and the flat wire mesh grid 202 is sleeved outside the small pitch pipe 101a and outside the large pitch pipe 101 b.

Preferably, the round wire mesh grid 201 is sleeved outside the large pitch pipe 101b by a length of nine tenths, and the flat wire mesh grid 202 is sleeved outside the large pitch pipe by a length of one tenth.

Preferably, the coating 200 is made of stainless steel, nitinol or copper.

Example 3

Referring to fig. 1 and 2, the present invention provides a third embodiment of an integral type composite tube, which is different from the second embodiment in that the outer layer 300 includes a heat shrinkage tube 301, and the heat shrinkage tube 301 is coated on the outer side of the coating layer 200.

Preferably, the coating 200 is made of stainless steel, nitinol or copper.

The outer layer 300 includes a heat shrinkage tube 301, and the heat shrinkage tube 301 is coated on the outer side of the coating layer 200. The heat-shrinkable sleeve is a special polyolefin heat-shrinkable sleeve, and can also be called EVA. The outer layer is formed by compounding and processing high-quality soft cross-linked polyolefin materials and inner layer hot melt adhesives, the outer layer material has the characteristics of insulation, corrosion resistance, wear resistance and the like, and the inner layer has the advantages of low melting point, waterproof sealing, high adhesiveness and the like.

Preferably, TPE, TPU, PU, LDPE or HDPE is used for the heat shrinkable tube 301.

Example 4

Referring to fig. 1 and 2, the present invention provides a fourth embodiment of an integral composite tube, which is different from the third embodiment in that the outer layer 300 further includes a curved elastic member 302, the curved elastic member 302 is wrapped on the outer side of the flat wire mesh grid 201, and the heat shrinkable tube 301 is wrapped on the outer side of the round wire mesh grid 202 and the local outer side of the flat wire mesh grid 201.

Preferably, the coating 200 is made of stainless steel, nitinol or copper.

The outer layer 300 includes a heat shrinkage tube 301 and a bending elastic body 302, and the heat shrinkage tube 301 is coated on the outer side of the coating layer 200. The heat-shrinkable sleeve is a special polyolefin heat-shrinkable sleeve, and can also be called EVA. The outer layer is formed by compounding and processing high-quality soft cross-linked polyolefin materials and inner layer hot melt adhesives, the outer layer material has the characteristics of insulation, corrosion resistance, wear resistance and the like, and the inner layer has the advantages of low melting point, waterproof sealing, high adhesiveness and the like. In this embodiment, TPE, TPU, PU, PEBAX, PE, PTFE, LDPE or HDPE is used as the heat shrinkable tube 301. The curved elastomer 302 is wrapped on the outer side of the flat wire mesh 201, and the heat shrinkage tube 301 is wrapped on the outer side of the round wire mesh 202 and the local outer side of the flat wire mesh 201. The bending elastomer 302 is made of silica gel, rubber, fluororubber, PEBAX, PTFE, TPU or TPE

The heat shrinkable tube 301 is wrapped around one fifth of the length of the large pitch tube 101 b.

In this embodiment, the integral composite tube is divided into three sections, the section covered by the heat shrink tube 301 is an insertion tube with adjustable hardness, and the section covered by the bending elastic member 302 is divided into two sections, one is a free bending section, and the other is a passive bending section. The free bending section here is the inside of the snake bone chain 102 part, and the passive bending section is the inside of the large pitch tube 101b and the circular tube 101c part.

It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, a part shown as integrally formed may be constructed of multiple parts or parts, the position of the part may be inverted or otherwise changed, and the nature or number or position of discrete parts may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments.

In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described.

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims

1. Integral type composite pipe, its characterized in that:

The inner layer comprises a threaded pipe and a snake bone chain, and one ends of the threaded pipe and the snake bone chain are hinged;

the coating layer is sleeved on the outer side of the inner layer and adopts a woven net;

An outer layer wrapping the outer side of the coating layer;

The threaded pipe comprises a small-pitch pipe, a large-pitch pipe and a circular pipe, wherein the small-pitch pipe, the large-pitch pipe and the circular pipe are integrated, and the circular pipe is hinged with the snake bone chain;

The coating layer comprises a circular wire woven net and a flat wire woven net, the circular wire woven net is sleeved on the outer side of the snake bone chain and the local outer side of the large-pitch pipe, and the flat wire woven net is sleeved on the outer side of the small-pitch pipe and the local outer side of the large-pitch pipe;

The outer layer comprises a heat shrinkage tube, and the heat shrinkage tube is coated on the outer side of the coating layer;

The outer layer further comprises a bending elastomer, the bending elastomer is coated on the outer side of the circular wire mesh grid, and the heat shrinkage tube is coated on the outer side of the flat wire mesh grid and the local outer side of the circular wire mesh grid;

the screw pitch of the small screw pitch pipe is smaller than that of the large screw pitch pipe, and the width of each section of screw thread pipe of the small screw pitch pipe is larger than that of each section of screw thread pipe of the large screw pitch pipe, so that the hardness of the part of the small screw pitch pipe is larger than that of the part of the large screw pitch pipe.

2. The integrated composite pipe according to claim 1, wherein the round wire mesh grid is sleeved outside the large-pitch pipe by a length of nine tenths, and the flat wire mesh grid is sleeved outside the large-pitch pipe by a length of one tenth.

3. The integrated composite pipe of claim 1, wherein the heat shrink tube is wrapped about one fifth of the length of the large pitch tube.

4. The integrated composite pipe of claim 1 or 3, wherein the coating is made of one of stainless steel, nickel titanium, aluminum and copper.

5. The integrated composite tube of claim 4, wherein the heat shrink tube is made of one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET.

6. The integrated composite pipe of claim 5, wherein the bending elastomer is made of one or more of silica gel, rubber, fluororubber, PEBAX, PTFE, TPU and TPE.