CN111012288A

CN111012288A - Integrated composite pipe

Info

Publication number: CN111012288A
Application number: CN201911397786.4A
Authority: CN
Inventors: 不公告发明人
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: 2020-04-17
Also published as: WO2021136289A1

Abstract

The invention discloses an integrated composite pipe, which comprises an inner layer and a lower layer, wherein 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; and the outer layer is wrapped on the outer side of the coating layer. The threaded pipe adopts the parts with different large pitches and small pitches, so that the hardness of the composite pipe is changed; the flat wires and the round wires are used alternately, so that the transmission property and the coaxiality of the inner part are ensured; the snake bone chain part does not adopt a welding mode, and adopts a hinging mode; the technical scheme provided by the invention is convenient to assemble and low in 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 uses optical fiber. Fiberscopes may also be used for in vivo assays, such as measuring in vivo temperature, pressure, displacement, spectral absorption, and other data.

The optical fiber endoscope is a slender and flexible tube, in which a bundle of light-conducting glass fibers are arranged, and two ends of the tube are respectively equipped with a lens. During examination, one end of the tube is inserted into an organ to be examined in the human body, and the condition in the organ can be seen from the other end. Endoscopes are usually provided with illumination sources, and some are also equipped with instruments for performing surgical treatment, such as lasers. Optical fibers are introduced into the optical transmission mechanism, and video lenses become the first choice for image capture. The appearance of modern video endoscopes, electronic endoscopes and ultrasonic endoscopes opens up a new era of modern medical endoscopes and enters the era of treatment and operation from the era of examination and diagnosis.

The pipeline used on the endoscope at present needs to be imported, so that the cost is very high, the density degree of the threaded pipes in the pipeline in the prior art is not changed, and the pipeline is integrally formed by PU.

Therefore, the composite pipe in the prior art has several problems:

the internal thread pipes are not differentiated in density, so that the composite pipe is hard when the hard part cannot be realized, and the soft part is softer, so that the composite pipe is broken if the endoscope is pulled too tightly;

because the PU layer is adopted in the prior art, the force transmission and 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 welded part is 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 for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made keeping in mind the above and/or other problems occurring in the prior art.

It is therefore an object of the present invention to provide an integral composite pipe.

In order to solve the technical problems, the invention provides the following technical scheme: the integral composite pipe comprises an inner layer and a composite layer, wherein 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; and the outer layer is wrapped on the outer side of the coating layer.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the screwed pipe comprises a small-pitch pipe, a large-pitch pipe and a circular ring pipe, the three are integrated, and the circular ring pipe is hinged with the snake bone chain.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the coating includes circle silk mesh grid and flat wire mesh grid, circle silk mesh grid cover is located the snake bone chain outside with the local outside of coarse pitch pipe, flat wire mesh grid cover is located the outside of fine pitch pipe with the local outside of coarse pitch pipe.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the round wire mesh grid is sleeved on the outer side of the coarse pitch pipe by nine tenths of the length, and the flat wire mesh grid is sleeved on the outer side of the coarse pitch pipe by one tenths of the length.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the outer layer comprises a heat-shrinkable tube, and the heat-shrinkable tube is coated on the outer side of the coating layer.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the outer layer further comprises a bent elastic body, the bent elastic body is coated on the outer side of the round wire woven mesh, and the heat-shrinkable tube is coated on the outer side of the flat wire woven mesh and the local outer side of the round wire woven mesh.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the heat shrinkable tube is coated on one fifth of the length of the coarse pitch tube.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the coating layer is made of stainless steel, nickel titanium, aluminum or copper.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the heat-shrinkable tube is selected from TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET for use.

As a preferable aspect of the one-piece composite pipe of the present invention, wherein: the bending elastomer is prepared by mixing one or more composite materials of silica gel, rubber, fluororubber, PEBAX, PTFE, TPU and TPE.

The invention has the beneficial effects that:

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

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

the snake bone chain part does not adopt a welding mode, and adopts a hinging mode;

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 needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

FIG. 1 is a schematic view, partially in section, of an overall structure in one embodiment of an integral composite pipe 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 to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

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 than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is 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 integrated composite pipe, in a first embodiment of the present invention, a body of the integrated composite pipe 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 comprises a threaded pipe 101 and a snake bone chain 102, and one end of the threaded pipe 101 and one end of the snake bone chain 102 are hinged.

In the prior art, the snake bone chain is integrally formed, welding is adopted before the snake bone chain part, the precision is not high, the welded part is fine, and the snake bone chain is not welded well and is easy to fall off, so that the snake bone chain 102 is not welded but hinged in the embodiment.

It should be noted that the internal threaded tube does not distinguish between density and density, so that the composite tube may not be hard when hard, and the soft portion is softer, which may cause the composite tube to break if it is pulled too tightly by the endoscope. Since the larger the pitch, the softer the state of the pitch tube, the more likely it is to bend, and the greater the elasticity, in the endoscope used, if the entire composite tube is soft, the bending of the tail end cannot be achieved, so that the situation in different directions is seen, and if the entire composite tube is hard, the composite tube is likely to be broken when the problem in each direction is seen in the bending. Therefore, the threaded pipe 101 comprises a small-pitch pipe 101a, a large-pitch pipe 101b and a circular ring pipe 101c, and the three are integrated, and the circular ring pipe 101c is hinged with the snake bone chain 102.

It should be noted that although the pitch of the small pitch pipe 101a is smaller than that of the large pitch pipe 101b, the width of each threaded pipe of the small pitch pipe 101a is larger than that of each threaded pipe, so that the hardness of the part of the small pitch pipe 101a is larger than that of the large pitch pipe 101 b.

For example, when the integrated composite tube is applied to an endoscope, the tail end of the composite tube needs to be bent when the composite tube is inserted into the intestines and stomach of a human body and the good state of the intestines and stomach needs to be checked. When the large pitch pipe 101b is bent, the small pitch pipe 101a is also bent, and the bending effect is not obtained. Therefore, with the above embodiment, the small pitch pipes 101a can be made to be easily bent less than the large pitch pipes 101 b.

The coating 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 protection effect is achieved.

The outer layer 300 is wrapped on the outer side of the wrapping layer 200, so that the lubrication degree of the composite pipe is guaranteed, and the intestines and the stomach of a human body cannot be cut due to roughness after the composite pipe is stretched into the intestines and the stomach of the human body.

Preferably, the coating layer 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 a one-piece composite pipe, which differs from the first embodiment in that: in this 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 main body of the integrated 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, and one end of the threaded pipe 101 and one end of 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 ring pipe 101c which are integrated, and the circular ring pipe 101c is hinged with the snake bone chain 102.

Preferably, the small pitch pipe 101a has a pitch smaller than that of the large pitch pipe 101b, but the small pitch pipe 101a has a width per one pitch of the threaded pipe larger than that of the large pitch pipe, so that the small pitch pipe 101a has a portion harder than that of the large pitch pipe 101 b. Therefore, with the above embodiment, the small pitch pipes 101a can be made to be easily bent less than the large pitch pipes 101 b.

The coating 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 round wire mesh grid 201 and a flat wire mesh grid 202, the round wire mesh grid 201 is sleeved on the outer side of the snake bone chain 102 and the local outer side of the large pitch pipe 101b, and the flat wire mesh grid 202 is sleeved on the outer side of the small pitch pipe 101a and the local outer side of the large pitch pipe 101 b.

Preferably, the round wire mesh grid 201 is sleeved on the outer side of the coarse pitch pipe 101b by nine tenths of the length, and the flat wire mesh grid 202 is sleeved on the outer side of the coarse pitch pipe 101b by one tenth of the length.

Example 3

Referring to fig. 1 and 2, the present invention provides a third embodiment of a one-piece composite pipe, which differs from the second embodiment in that: the outer layer 300 comprises a heat shrinkable tube 301, and the heat shrinkable tube 301 is coated outside the coating layer 200.

The outer layer 300 includes a heat shrinkable tube 301, and the heat shrinkable tube 301 is wrapped outside the covering layer 200. The heat shrinkable sleeve is a special polyolefin heat shrinkable sleeve which can also be called as EVA material. The outer layer is made of high-quality soft cross-linked polyolefin material and inner layer hot melt adhesive through composite processing, 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, water resistance, sealing, high adhesion and the like.

Preferably, the heat shrinkable tube 301 is made of TPE, TPU, PU, LDPE or HDPE.

Example 4

Referring to fig. 1 and 2, the present invention provides a fourth embodiment of a one-piece composite pipe, which differs from the third embodiment in that: the outer layer 300 further comprises 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 a part of the outer side of the flat wire mesh grid 201.

The outer layer 300 includes a heat shrinkable tube 301 and a curved elastic body 302, and the heat shrinkable tube 301 is wrapped outside the covering layer 200. The heat shrinkable sleeve is a special polyolefin heat shrinkable sleeve which can also be called as EVA material. The outer layer is made of high-quality soft cross-linked polyolefin material and inner layer hot melt adhesive through composite processing, 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, water resistance, sealing, high adhesion and the like. In this embodiment, the heat shrinkable tube 301 is made of TPE, TPU, PU, PEBAX, PE, PTFE, LDPE or HDPE. The bent elastic body 302 is coated on the outer side of the flat wire mesh grid 201, and the heat shrinkable tube 301 is coated on the outer side of the round wire mesh grid 202 and the partial outer side of the flat wire mesh grid 201. The bending elastomer 302 is selected from silica gel, rubber, fluororubber, PEBAX, PTFE, TPU or TPE

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

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

It is important to note that the construction and arrangement of the present 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, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. 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 present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, 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, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. Compound pipe of integral type, 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;

and the outer layer is wrapped on the outer side of the coating layer.

2. The one-piece composite tube of claim 1, wherein: the screwed pipe comprises a small-pitch pipe, a large-pitch pipe and a circular ring pipe, the three are integrated, and the circular ring pipe is hinged with the snake bone chain.

3. The one-piece composite tube of claim 2, wherein: the coating includes circle silk mesh grid and flat wire mesh grid, circle silk mesh grid cover is located the snake bone chain outside with the local outside of coarse pitch pipe, flat wire mesh grid cover is located the outside of fine pitch pipe with the local outside of coarse pitch pipe.

4. The one-piece composite tube of claim 3, wherein: the round wire mesh grid is sleeved on the outer side of the coarse pitch pipe by nine tenths of the length, and the flat wire mesh grid is sleeved on the outer side of the coarse pitch pipe by one tenths of the length.

5. The one-piece composite tube of any of claims 3 or 4, wherein: the outer layer comprises a heat-shrinkable tube, and the heat-shrinkable tube is coated on the outer side of the coating layer.

6. The one-piece composite tube of claim 5, wherein: the outer layer further comprises a bent elastic body, the bent elastic body is coated on the outer side of the round wire woven mesh, and the heat-shrinkable tube is coated on the outer side of the flat wire woven mesh and the local outer side of the round wire woven mesh.

7. The one-piece composite tube of claim 6, wherein: the heat shrinkable tube is coated on one fifth of the length of the coarse pitch tube.

8. The one-piece composite tube of claim 6 or 7, wherein: the coating layer is made of stainless steel, nickel titanium, aluminum or copper.

9. The one-piece composite tube of claim 8, wherein: the heat-shrinkable tube is selected from TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET for use.

10. The one-piece composite tube of claim 9, wherein: the bending elastomer is prepared by mixing one or more composite materials of silica gel, rubber, fluororubber, PEBAX, PTFE, TPU and TPE.