Integrated composite pipe

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

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an integrated composite tube used on instruments. Background Art

[0002] With the development of modern science and technology, endoscopes have been completely reformed and use optical fibers. Fiber endoscopes can also be used for in vivo testing, such as measuring body temperature, pressure, displacement, spectral absorption and other data.

[0003] The fiberoptic endoscope is a thin, soft tube with a bundle of light-guiding glass fibers inside and a lens at each end. During the inspection, one end of the tube is inserted into the organ to be inspected inside the human body, and the situation inside the organ can be seen from the other end. Endoscopes are usually equipped with a light source, and some are also equipped with surgical instruments, such as lasers. With the introduction of optical fiber in the light transmission mechanism, video lenses have become the first choice for image capture. The emergence of modern video endoscopes, electronic endoscopes, and ultrasonic endoscopes has opened up a new era of modern medical endoscopy. Endoscopes have entered the era of treatment and surgery from the era of inspection and diagnosis.

[0004] However, the pipes currently used in endoscopes need to be imported, which is very expensive. In the prior art, the density of the threaded pipe inside the pipe is unchanged and PU is used for one-piece molding.

[0005] Therefore, the composite pipe in the prior art has the following problems:

[0006] The internal threaded tube does not distinguish between sparse and dense parts, so the composite tube may not be very hard when it should be hard, and relatively soft when it should be soft. If the endoscope is pulled too tight, the composite tube may break.

[0007] Because the PU layer is used in the prior art, the force transmission and coaxiality are not high;

[0008] The prior art is one-piece molding, and the snake chain part is previously welded, which has low precision and the welding part is relatively fine, so it is easy to fall off if the welding is not good;

[0009] The cost of existing technologies is high. Summary of the invention

[0010] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0011] In view of the above problems and / or the problems existing in the prior art, the present invention is proposed.

[0012] It is therefore an object of the present invention to provide a one-piece composite pipe.

[0013] In order to solve the above technical problems, the present invention provides the following technical solutions: an integrated composite pipe, an inner layer, including a threaded pipe and a snake-bone chain, one end of the threaded pipe and the snake-bone chain are hinged; a covering layer is sleeved on the outside of the inner layer and adopts a woven mesh; an outer layer is wrapped around the outside of the covering layer.

[0014] As a preferred solution of the one-piece composite pipe of the present invention, the threaded pipe includes a small pitch pipe, a large pitch pipe and a circular ring pipe, and the three are integrated, and the circular ring pipe is hinged to the snake-bone chain.

[0015] As a preferred solution of the one-piece composite tube described in the present invention, wherein: the coating layer includes a round wire woven mesh and a flat wire woven mesh, the round wire woven mesh is sleeved on the outside of the serpentine chain and the partial outside of the large pitch tube, and the flat wire woven mesh is sleeved on the outside of the small pitch tube and the partial outside of the large pitch tube.

[0016] As a preferred solution of the one-piece composite tube of the present invention, wherein: nine-tenths of the length of the outer side of the large-pitch tube is covered with the round wire woven mesh, and one-tenth of the length is covered with the flat wire woven mesh.

[0017] As a preferred solution of the one-piece composite tube of the present invention, the outer layer includes a heat shrink tube, and the heat shrink tube is coated on the outer side of the coating layer.

[0018] As a preferred solution of the integrated composite tube of the present invention, the outer layer also includes a bending elastomer, the bending elastomer is coated on the outside of the round wire woven mesh, and the heat shrinkable tube is coated on the outside of the flat wire woven mesh and part of the outside of the round wire woven mesh.

[0019] As a preferred solution of the one-piece composite tube of the present invention, the heat shrink tube is wrapped around one fifth of the length of the large pitch tube.

[0020] As a preferred solution of the one-piece composite tube of the present invention, the coating layer is made of one of stainless steel, nickel-titanium, aluminum or copper.

[0021] As a preferred solution of the integrated composite tube of the present invention, the heat shrink tube is selected from TPE, TPU, PU, ​​PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC, and PET.

[0022] As a preferred solution of the one-piece composite pipe of the present invention, the bending elastic body is made by mixing one or more composite materials selected from silicone, rubber, fluororubber, PEBAX, PTFE, TPU and TPE.

[0023] Beneficial effects of the present invention:

[0024] The threaded pipe uses different parts with large and small pitches, which changes the softness and hardness of the composite pipe;

[0025] The alternating use of flat wire and round wire ensures the transmission and coaxiality of the wire.

[0026] The snake chain part is not welded, but hinged;

[0027] The technical solution proposed in the present invention is easy to assemble and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0029] Figure 1 A partial cross-sectional schematic diagram of the overall structure of an embodiment of the one-piece composite pipe provided by the present invention;

[0030] Figure 2 A schematic diagram of the overall structure of the threaded pipe in an embodiment of the one-piece composite pipe provided by the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1

[0035] Reference Figure 1 and Figure 2 The present invention provides an integrated composite pipe. In a first embodiment of the present invention, the main 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.

[0036] Specifically, the inner layer 100 includes a threaded tube 101 and a snake-bone chain 102 , and one end of the threaded tube 101 and the snake-bone chain 102 are hinged.

[0037] In the prior art, the snake-bone chain 102 is integrally formed, and the snake-bone chain part is previously welded, which has low precision and the welding part is relatively fine. If the welding is not good, it is easy to fall off. Therefore, in this embodiment, the snake-bone chain 102 is not welded, but hinged.

[0038] It should be noted that the internal threaded tube does not distinguish between density, so the composite tube may not be very hard when it is hard and relatively soft when it is soft, resulting in the composite tube breaking if the endoscope is pulled too tight. Because the larger the pitch, the softer the state of the pitch tube, the easier it is to bend, and the greater the elasticity. In the endoscope in use, if the entire composite tube is very soft, it is impossible to achieve tail bending, so as to see the situation in different directions. If the entire composite tube is very hard, it is easy to break the composite tube when bending to see the problem in various directions. Therefore, the threaded tube 101 includes a small pitch tube 101a, a large pitch tube 101b and annular tube 101c, and the three are integrated, and the annular tube 101c is hinged with the snake bone chain 102.

[0039] It should be noted that although the pitch of the small pitch tube 101a is smaller than that of the large pitch tube 101b, the width of each threaded tube section of the small pitch tube 101a is greater than the width of each threaded tube section, so that the hardness of the small pitch tube 101a is greater than that of the large pitch tube 101b.

[0040] For example, when the integrated composite tube is applied to an endoscope, when the composite tube is inserted into the human stomach and intestines, the tail end of the composite tube needs to be bent because the good condition of the stomach and intestines needs to be checked. If the large pitch tube 101b is bent and the small pitch tube 101a is also bent, the bending effect cannot be achieved. Therefore, by adopting the above embodiment, the bending ease of the small pitch tube 101a can be made smaller than the bending ease of the large pitch tube 101b.

[0041] The covering layer 200 is sleeved on the outer side of the inner layer 100 and is covered with a woven mesh on the outer layer of the inner layer 100 to play a protective role.

[0042] The outer layer 300 is wrapped around the outside of the coating layer 200 to ensure the lubricity of the composite tube so that the composite tube will not cut the intestines and stomach of the human body due to its roughness after being inserted into the intestines and stomach of the human body.

[0043] Preferably, the coating layer 200 is made of stainless steel, nickel-titanium-aluminum or copper.

[0044] Example 2

[0045] Reference Figure 1 and Figure 2 The present invention provides a second embodiment of an integrated composite pipe, which is different from the first embodiment in that: in this embodiment, the coating layer 200 includes two different woven meshes, namely a round wire woven mesh 201 and a flat wire woven mesh 202.

[0046] Specifically, the main body of the integrated composite pipe includes an inner layer 100 , a cladding layer 200 and an outer layer 300 . The cladding 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 cladding layer 200 .

[0047] The inner layer 100 includes a threaded tube 101 and a snake-bone chain 102, and one end of the threaded tube 101 and the snake-bone chain 102 are hinged. The threaded tube 101 includes a small pitch tube 101a, a large pitch tube 101b and a ring tube 101c, and the three are integrated, and the ring tube 101c is hinged to the snake-bone chain 102.

[0048] In the prior art, the snake-bone chain 102 is integrally formed, and the snake-bone chain part is previously welded, which has low precision and the welding part is relatively fine. If the welding is not good, it is easy to fall off. Therefore, in this embodiment, the snake-bone chain 102 is not welded, but hinged.

[0049] Preferably, although the pitch of the small pitch tube 101a is smaller than that of the large pitch tube 101b, the width of each threaded tube section of the small pitch tube 101a is greater than the width of each threaded tube section, so that the hardness of the small pitch tube 101a is greater than that of the large pitch tube 101b. Therefore, by adopting the above embodiment, the bending ease of the small pitch tube 101a can be made smaller than that of the large pitch tube 101b.

[0050] The covering layer 200 is sleeved on the outer side of the inner layer 100, and a woven mesh is used to cover the outer layer of the inner layer 100, thereby playing a secondary protection role.

[0051] Preferably, the coating layer 200 includes a round wire woven mesh 201 and a flat wire woven mesh 202, the round wire woven mesh 201 is sleeved on the outside of the snake chain 102 and the partial outside of the large pitch tube 101b, and the flat wire woven mesh 202 is sleeved on the outside of the small pitch tube 101a and the partial outside of the large pitch tube 101b.

[0052] Preferably, nine-tenths of the length of the outer side of the large-pitch tube 101 b is covered with the round wire woven mesh 201 , and one-tenth of the length is covered with the flat wire woven mesh 202 .

[0053] The outer layer 300 is wrapped around the outside of the coating layer 200 to ensure the lubricity of the composite tube so that the composite tube will not cut the intestines and stomach of the human body due to its roughness after being inserted into the intestines and stomach of the human body.

[0054] Preferably, the coating layer 200 is made of stainless steel, nickel-titanium-aluminum or copper.

[0055] Example 3

[0056] Reference Figure 1 and Figure 2 The present invention provides a third embodiment of an integrated composite tube, which is different from the second embodiment in that: the outer layer 300 includes a heat shrinkable tube 301, and the heat shrinkable tube 301 is coated on the outer side of the coating layer 200.

[0057] Specifically, the main body of the integrated composite pipe includes an inner layer 100 , a cladding layer 200 and an outer layer 300 . The cladding 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 cladding layer 200 .

[0058] The inner layer 100 includes a threaded tube 101 and a snake-bone chain 102, and one end of the threaded tube 101 and the snake-bone chain 102 are hinged. The threaded tube 101 includes a small pitch tube 101a, a large pitch tube 101b and a ring tube 101c, and the three are integrated, and the ring tube 101c is hinged to the snake-bone chain 102.

[0059] In the prior art, the snake-bone chain 102 is integrally formed, and the snake-bone chain part is previously welded, which has low precision and the welding part is relatively fine. If the welding is not good, it is easy to fall off. Therefore, in this embodiment, the snake-bone chain 102 is not welded, but hinged.

[0060] Preferably, although the pitch of the small pitch tube 101a is smaller than that of the large pitch tube 101b, the width of each threaded tube section of the small pitch tube 101a is greater than the width of each threaded tube section, so that the hardness of the small pitch tube 101a is greater than that of the large pitch tube 101b. Therefore, by adopting the above embodiment, the bending ease of the small pitch tube 101a can be made smaller than that of the large pitch tube 101b.

[0061] The covering layer 200 is sleeved on the outer side of the inner layer 100, and a woven mesh is used to cover the outer layer of the inner layer 100, thereby playing a secondary protection role.

[0062] Preferably, the coating layer 200 includes a round wire woven mesh 201 and a flat wire woven mesh 202, the round wire woven mesh 201 is sleeved on the outside of the snake chain 102 and the partial outside of the large pitch tube 101b, and the flat wire woven mesh 202 is sleeved on the outside of the small pitch tube 101a and the partial outside of the large pitch tube 101b.

[0063] Preferably, nine-tenths of the length of the outer side of the large-pitch tube 101 b is covered with the round wire woven mesh 201 , and one-tenth of the length is covered with the flat wire woven mesh 202 .

[0064] Preferably, the coating layer 200 is made of stainless steel, nickel-titanium-aluminum or copper.

[0065] The outer layer 300 is wrapped around the outside of the coating layer 200 to ensure the lubricity of the composite tube so that the composite tube will not cut the intestines and stomach of the human body due to its roughness after being inserted into the intestines and stomach of the human body.

[0066] It should be noted that the outer layer 300 includes a heat shrink tube 301, and the heat shrink tube 301 is coated on the outer side of the coating layer 200. The heat shrink tube is a special polyolefin heat shrink tube, which can also be called EVA material. The outer layer is made of high-quality soft cross-linked polyolefin material and the inner layer hot melt adhesive. The outer layer material has the characteristics of insulation, corrosion resistance, wear resistance, etc., and the inner layer has the advantages of low melting point, waterproof sealing and high adhesion.

[0067] Preferably, the heat shrink tube 301 is made of TPE, TPU, PU, ​​LDPE or HDPE.

[0068] Example 4

[0069] Reference Figure 1 and Figure 2The present invention provides a fourth embodiment of the one-piece composite tube, which is different from the third embodiment in that: the outer layer 300 also includes a bending elastic member 302, and the bending elastic member 302 is coated on the outside of the flat wire woven mesh 201, and the heat shrinkable tube 301 is coated on the outside of the round wire woven mesh 202 and the partial outside of the flat wire woven mesh 201.

[0070] Specifically, the main body of the integrated composite pipe includes an inner layer 100 , a cladding layer 200 and an outer layer 300 . The cladding 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 cladding layer 200 .

[0071] The inner layer 100 includes a threaded tube 101 and a snake-bone chain 102, and one end of the threaded tube 101 and the snake-bone chain 102 are hinged. The threaded tube 101 includes a small pitch tube 101a, a large pitch tube 101b and a ring tube 101c, and the three are integrated, and the ring tube 101c is hinged to the snake-bone chain 102.

[0072] In the prior art, the snake-bone chain 102 is integrally formed, and the snake-bone chain part is previously welded, which has low precision and the welding part is relatively fine. If the welding is not good, it is easy to fall off. Therefore, in this embodiment, the snake-bone chain 102 is not welded, but hinged.

[0073] Preferably, although the pitch of the small pitch tube 101a is smaller than that of the large pitch tube 101b, the width of each threaded tube section of the small pitch tube 101a is greater than the width of each threaded tube section, so that the hardness of the small pitch tube 101a is greater than that of the large pitch tube 101b. Therefore, by adopting the above embodiment, the bending ease of the small pitch tube 101a can be made smaller than that of the large pitch tube 101b.

[0074] The covering layer 200 is sleeved on the outer side of the inner layer 100, and a woven mesh is used to cover the outer layer of the inner layer 100, thereby playing a secondary protection role.

[0075] Preferably, the coating layer 200 includes a round wire woven mesh 201 and a flat wire woven mesh 202, the round wire woven mesh 201 is sleeved on the outside of the snake chain 102 and the partial outside of the large pitch tube 101b, and the flat wire woven mesh 202 is sleeved on the outside of the small pitch tube 101a and the partial outside of the large pitch tube 101b.

[0076] Preferably, nine-tenths of the length of the outer side of the large-pitch tube 101 b is covered with the round wire woven mesh 201 , and one-tenth of the length is covered with the flat wire woven mesh 202 .

[0077] Preferably, the coating layer 200 is made of stainless steel, nickel-titanium-aluminum or copper.

[0078] The outer layer 300 is wrapped around the outside of the coating layer 200 to ensure the lubricity of the composite tube so that the composite tube will not cut the intestines and stomach of the human body due to its roughness after being inserted into the intestines and stomach of the human body.

[0079] It should be noted that the outer layer 300 includes a heat shrink tube 301 and a bending elastic body 302, and the heat shrink tube 301 is coated on the outside of the coating layer 200. The heat shrink tube is a special polyolefin heat shrink tube, which can also be called EVA material. The outer layer is made of high-quality soft cross-linked polyolefin material and the inner layer hot melt adhesive composite processing. The outer layer material has the characteristics of insulation, corrosion resistance, and wear resistance, and the inner layer has the advantages of low melting point, waterproof sealing and high adhesion. In this embodiment, the heat shrink tube 301 is made of TPE, TPU, PU, ​​PEBAX, PE, PTFE, LDPE or HDPE. The bending elastic body 302 is coated on the outside of the flat wire woven mesh 201, and the heat shrink tube 301 is coated on the outside of the round wire woven mesh 202 and the partial outside of the flat wire woven mesh 201. The bending elastic body 302 is made of silicone, rubber, fluororubber, PEBAX, PTFE, TPU or TPE.

[0080] It should be noted that the heat shrink tube 301 covers one fifth of the length of the large pitch tube 101 b.

[0081] In this embodiment, the one-piece composite tube is divided into three sections. The section covered by the heat shrink tube 301 is an insert tube with adjustable hardness. The section covered by the bending elastic member 302 is divided into two sections, one of which is a free bending section and the other is a passive bending section. The free bending section is the part with the snake bone chain 102 inside, and the passive bending section is the part with the large pitch tube 101b and the annular tube 101c inside.

[0082] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, the parts shown as integrally formed may be composed of a plurality of parts or parts, the positions of the parts may be inverted or otherwise changed, and the properties or number or positions of the discrete parts may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments.

[0083] In the claims, any "means plus function" clause is intended to cover the structures described herein that perform 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 invention. Therefore, the present invention is not limited to the particular embodiments, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0084] Additionally, in an effort to provide a concise description of example embodiments, all features of an actual implementation may not be described.

[0085] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0086] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. One-piece composite pipe, characterized by: The inner layer includes a threaded tube and a snake-bone chain, wherein one end of the threaded tube and the snake-bone chain are hinged; The covering layer is sleeved on the outer side of the inner layer and is made of a woven mesh; An outer layer, wrapped around the outer side of the coating layer; The threaded tube includes a small pitch tube, a large pitch tube and a circular ring tube, and the three are integrated, and the circular ring tube is hinged with the snake bone chain; The coating layer includes a round wire braided mesh and a flat wire braided mesh, wherein the round wire braided mesh is sleeved on the outside of the snake bone chain and the partial outside of the large pitch tube, and the flat wire braided mesh is sleeved on the outside of the small pitch tube and the partial outside of the large pitch tube; The outer layer includes a heat shrink tube, and the heat shrink tube is coated on the outer side of the coating layer; The outer layer further comprises a bending elastic body, the bending elastic body is coated on the outside of the round wire woven mesh, and the heat shrink tube is coated on the outside of the flat wire woven mesh and part of the outside of the round wire woven mesh; Among them, the pitch of the small pitch tube is smaller than that of the large pitch tube, and the width of each threaded tube section of the small pitch tube is larger than that of each threaded tube section of the large pitch tube, so that the hardness of the small pitch tube part is greater than that of the large pitch tube part.

2. The one-piece composite pipe according to claim 1, characterized in that: Nine-tenths of the length of the outer side of the large-pitch tube is covered with the round wire braided mesh, and one-tenth of the length is covered with the flat wire braided mesh.

3. The one-piece composite pipe according to claim 1, characterized in that: The heat shrink tube is coated on one fifth of the length of the large pitch tube.

4. The one-piece composite pipe according to claim 1 or 3, characterized in that: The coating layer is made of one of stainless steel, nickel titanium, aluminum and copper.

5. The one-piece composite pipe according to claim 4, characterized in that: The heat shrink tube is made of one of TPE, TPU, PU, ​​PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET.

6. The one-piece composite pipe according to claim 5, characterized in that: The bending elastic body is made by mixing one or more composite materials selected from silicone, rubber, fluororubber, PEBAX, PTFE, TPU and TPE.

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