CN216824432U - Adjustable curved sheath pipe - Google Patents
Adjustable curved sheath pipe Download PDFInfo
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- CN216824432U CN216824432U CN202122816592.2U CN202122816592U CN216824432U CN 216824432 U CN216824432 U CN 216824432U CN 202122816592 U CN202122816592 U CN 202122816592U CN 216824432 U CN216824432 U CN 216824432U
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- 239000004677 Nylon Substances 0.000 claims description 12
- 229920001778 nylon Polymers 0.000 claims description 12
- 230000002262 irrigation Effects 0.000 claims description 11
- 238000003973 irrigation Methods 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000000806 elastomer Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 5
- 238000011161 development Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229920002530 polyetherether ketone Polymers 0.000 claims description 5
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 4
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000004204 blood vessel Anatomy 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000012546 transfer Methods 0.000 description 5
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- 230000000694 effects Effects 0.000 description 3
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Abstract
The utility model relates to the technical field of medical instruments and discloses an adjustable bent sheath tube. It includes: the support pipe section and the bend adjusting pipe section are sequentially connected from the near end to the far end; the support pipe section and the bend-adjusting pipe section are provided with a plurality of perfusion channels which are communicated from the near end of the support pipe section to the far end of the bend-adjusting pipe section, the near end of each perfusion channel is opened, and the far end of each perfusion channel is closed; at least part of the bend adjusting pipe section has elastic deformation capacity, and the bending form of the bend adjusting pipe section can be controlled by adjusting the fluid pressure in the filling channel. The embodiment of the utility model controls the bending form of the bend adjusting pipe section through the fluid pressure in the filling channel, is beneficial to improving the controllability of the bending form, and has simple structure, easy operation and no occupation of the filling channel of the sheath pipe.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an adjustable bent sheath tube.
Background
The medical sheath is used for establishing a channel, conveying or recovering instruments, inputting medicines or leading out body fluid and the like in minimally invasive interventional diagnosis and treatment operations. In the clinical process, the sheath needs to be adjusted to different shapes according to the actual requirements and the difference of the anatomical shape of the target blood vessel.
Most of the existing adjustable bending sheath tubes adopt silk thread traction to achieve the purpose of bending adjustment, the process is complex, the passage space in the sheath tube is sacrificed, and the bending adjustment within a certain angle range can be realized only in one plane; if the bending adjusting effect in the three-dimensional space needs to be achieved, the number of the drawing silk threads needs to be increased, the process difficulty is further increased, and meanwhile, the use requirements of different blood vessel shapes of different patients in clinic are often difficult to meet.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide an adjustable bent sheath tube, which solves the problems of complex process and poor bending effect of the conventional adjustable bent sheath tube structure.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the embodiment of the utility model provides an adjustable bending sheath pipe, which comprises: the supporting pipe section and the bending adjusting pipe section are sequentially connected from the near end to the far end; the supporting pipe section and the bend adjusting pipe section are provided with a plurality of perfusion channels which are communicated from the near end of the supporting pipe section to the far end of the bend adjusting pipe section, the near ends of the perfusion channels are open, and the far ends of the perfusion channels are closed;
at least part of the bend adjusting pipe section has elastic deformation capacity, and the bending form of the bend adjusting pipe section can be controlled by adjusting the fluid pressure in the filling channel.
Additionally, the bend adjusting section comprises: a flexible tip segment having a proximal end connected to the distal end of the support segment; wherein each perfusion channel in the flexible tail end pipe section is correspondingly communicated with each perfusion channel in the support pipe section; or alternatively
The bend-adjusting pipe section comprises: the flexible bending adjusting device comprises a middle bending adjusting pipe section and a flexible tail end pipe section which are sequentially connected from a near end to a far end, wherein the near end of the middle bending adjusting pipe section is connected with the far end of the supporting pipe section; the middle bending adjusting pipe section comprises a middle bending adjusting unit or a plurality of middle bending adjusting units which are connected end to end; each middle bending adjusting unit comprises a flexible sub-pipe section and a rigid sub-pipe section which are sequentially connected from a near end to a far end; and the respective perfusion channels of the supporting pipe section, the middle bending adjusting pipe section and the flexible tail end pipe section are correspondingly communicated.
In addition, the perfusion channel of the middle bend-adjusting pipe section adopts a straight perfusion channel which extends from the near end to the far end along the axial direction of the perfusion channel and the central line of the middle bend-adjusting pipe section is parallel to the central line of the middle bend-adjusting pipe section, and the perfusion channel of the flexible tail end pipe section is arranged from the near end to the far end along the axial direction of the perfusion channel in a spiral structure.
In addition, the bending pipe section comprises a plurality of flexible bending pipe sections which are sequentially connected from the near end to the far end;
And a plurality of filling channels are respectively arranged from the near end of the supporting pipe section to the far end side of each flexible bending adjusting pipe section so as to respectively bend each flexible bending adjusting pipe section.
In addition, the perfusion channel of the bend-adjusting pipe section comprises:
the straight irrigation channel extends along the direction from the near end to the far end of the bend adjusting pipe section in a way that the center line of the straight irrigation channel is parallel to the center line of the bend adjusting pipe section; and/or
A helical irrigation channel extending in a helical configuration around the center of the bend regulating tube section in a proximal to distal direction of the bend regulating tube section.
In addition, the perfusion channel of the support pipe section is a straight perfusion channel which extends along the direction from the near end to the far end of the support pipe section and has a central line parallel to the central line of the perfusion channel.
In addition, the support pipeline section with the filling channel of accent bend section is a plurality of and one-to-one correspondence intercommunication, and is a plurality of filling channel is the even interval distribution of circumference.
In addition, the number of the filling channels of the bend adjusting pipe section is larger than that of the filling channels of the supporting pipe section, and at least one filling channel of the supporting pipe section is communicated with the plurality of filling channels of the bend adjusting pipe section.
In addition, the adjustable bending sheath tube also comprises a developing mark point arranged on the periphery of the adjustable bending tube section;
The development marking point includes: and the near-end developing point is arranged at the near-end side of the bend adjusting pipe section and/or the far-end developing point is arranged at the far end of the bend adjusting pipe section.
Additionally, the flexible tip tube section and the flexible sub-tube section are made of: nylon, nylon elastomers, thermoplastic polyurethane elastomers, silicone or latex;
the supporting pipe section and the rigid sub-pipe section are made of the following materials: nylon, nylon elastomer or polyetheretherketone.
According to the technical scheme, the embodiment of the utility model at least has the following advantages and beneficial effects:
the adjustable bending sheath tube provided by the embodiment of the utility model has the advantages that the adjustable bending tube section has elastic deformation capacity by utilizing a bionic principle, meanwhile, the bending form of the adjustable bending tube section can be controlled by adjusting the fluid pressure in the perfusion channel of the adjustable bending tube section, the bending operability is strong, the sheath tube is more approximate to the natural blood vessel bending form, and the pushing is performed in a way of better conforming to different bending forms of blood vessels. Meanwhile, the sheath tube has simple structure and simple and convenient manufacturing process, and is favorable for clinical popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is understood that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an adjustable bending sheath according to an embodiment of the present invention;
fig. 2 is a schematic partial structural view of a supporting pipe section of an adjustable bending sheath according to an embodiment of the present invention;
fig. 3 is a schematic partial structural view of a bend adjusting pipe section of a bend-adjustable sheath according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.
Unless otherwise stated, reference to proximal and distal ends in the present invention shall have the same meaning in the orientation, i.e. in the use state, the distal end is the end distal from the operator, and the proximal end is the end proximal to the operator, where the operator controls the adjustable bending sheath.
Referring to fig. 1 to 3, an adjustable curved sheath according to an embodiment of the present invention can be used with an injection device to generate different curved configurations for facilitating pushing in blood vessels with different curved configurations. The adjustable bending sheath pipe of the embodiment of the utility model mainly comprises: a support pipe section 1 and a bend adjusting pipe section 2 which are connected in sequence from the near end to the far end.
The supporting pipe section 1 and the bend adjusting pipe section 2 are provided with a plurality of filling channels which are communicated from the near end of the supporting pipe section 1 to the far end of the bend adjusting pipe section 2, the near ends of the filling channels are open, and the far ends of the filling channels are closed. The supporting pipe section 1 is provided with a pouring channel 11 positioned thereon, the bend adjusting pipe section 2 is provided with a pouring channel 21 positioned thereon, and the pouring channel 11 of the supporting pipe section 1 and the pouring channel 21 of the bend adjusting pipe section 2 are communicated to form a pouring channel of the adjustable bent sheath pipe. Connect filling device (for example syringe) can be to filling the passageway in injection fluid (liquid or gas) through filling passageway near-end opening to fluid pressure in the control filling passageway makes the body of adjusting elbow section 2 receive the fluid pressure effect of different degree, and then can adjust the elbow section 2 and bend to orientation, and it is gentler to the stimulation of blood vessel.
At least part of the bend adjusting pipe section 2 has elastic deformation capacity, and the bending form of the bend adjusting pipe section 2 can be controlled by adjusting the fluid pressure in the filling channel. The bend adjusting pipe section 2 can be made of materials with elastic deformation capacity, the bend adjusting pipe section 2 is in a straight pipe shape in a natural state, when fluid with certain pressure is injected into a filling channel of the bend adjusting pipe section 2, the bend adjusting pipe section 2 can be elastically deformed under the action of the fluid pressure to generate a controllable bending form, and therefore the bending form of the bend adjusting pipe section 2 can be controlled by designing the trend of the filling channel and the combination of the trend.
The filling channel can be a blind hole which is arranged in the pipe walls of the supporting pipe section 1 and the bending adjusting pipe section 2 and runs through the near-end opening at the near-distal end of the adjustable bending sheath pipe body and the blind hole with the closed distal end. The perfusion channel structure in the pipe body of the adjustable bending sheath pipe is utilized to adjust bending, the perfusion channel space in the adjustable bending sheath pipe cannot be occupied, the requirement of space in the bending adjusting process is reduced, and the tortuous blood vessel is more favorably passed. In some examples, the perfusion channel may also protrude out of the wall of the adjustable curved sheath.
Referring to fig. 1 and 3, the bend-adjusting pipe section 2 may include: an intermediate bend-adjusting tube section and a flexible tip tube section 27 connected in series from the proximal end to the distal end. The proximal end of the intermediate bend adjusting section is connected to the distal end of the support section 1. Wherein, the middle bending adjusting pipe section comprises a middle bending adjusting unit. The intermediate bend-tuning unit comprises a flexible sub-tube section 25 and a rigid sub-tube section 26 connected in series from the proximal end to the distal end. Wherein, the perfusion channel 11 of the supporting tube segment 1 and the perfusion channel 21 of the bending adjusting tube segment 2 (i.e. the perfusion channel communicated by one flexible sub-tube segment 25, one rigid sub-tube segment 26 and one flexible end tube segment 27) are correspondingly communicated, i.e. a perfusion channel penetrating from the proximal end to the distal end of the bending adjusting sheath tube is formed.
The flexible end tube section 27 may have a frusto-conical tip to facilitate advancement within the blood vessel.
When the perfusion channels of the supporting pipe section 1 and the bending adjusting pipe section 2 are communicated from the near end to the far end, the bending adjusting pipe section is divided into a plurality of sections of flexible pipe sections through the rigid pipe section, and the bending adjusting pipe section 2 can be conveniently adjusted in a segmented mode. For example, flexible sub-section 25 and flexible end section 27 may be separately bent by spacing flexible sub-section 25 and flexible end section 27 apart by rigid sub-section 26. When the flexible sub-pipe section 25 and the flexible end pipe section 27 are deformed and bent by the fluid pressure in the filling channels, the rigid sub-pipe section 26 in the middle is similar to the support pipe section 1 and keeps the original shape, so that the sectional bending adjustment of the bending adjustment pipe section 2 can be realized.
In some examples, the intermediate bend tuning pipe section may further comprise a plurality of intermediate bend tuning units. Each middle bending adjusting unit comprises a flexible sub-pipe section 25 and a rigid sub-pipe section 26 which are sequentially connected from a near end to a far end, the middle bending adjusting units are connected end to end, and meanwhile, the filling channels of all pipe sections of the whole adjustable bending sheath pipe are communicated, so that the bending adjusting pipe section 2 can be finely divided into a plurality of adjustable bending pipe sections capable of being segmented and bent according to actual needs, and accurate bending adjustment can be conveniently carried out according to actual needs. In other words, in the sheath bending process, each flexible pipe section can be bent, so that the sheath has more bending joints, the space bending degree in the bending process can be greatly improved, and the bending operation performance is improved.
In some examples, segmented bend tuning may also be achieved by distribution of perfusion channels. The bend tuning pipe section 2 may comprise a plurality of flexible bend tuning pipe sections connected in series from a proximal end to a distal end. A plurality of perfusion channels are respectively arranged from the near end of the support pipe section 1 to the far end side of each flexible bend-adjusting pipe section so as to respectively bend each flexible bend-adjusting pipe section. For example, the bend adjustment section 2 may include two flexible bend adjustment sections, such as a proximal bend adjustment section connected to the support section and a distal bend adjustment section connected to the distal end of the proximal bend adjustment section. Wherein, the filling channel of adjustable curved sheath pipe can support the pipeline section and the near-end including lining up and transfer a plurality of filling channels of curved section distal end to and lining up and support the pipeline section and transfer a plurality of filling channels of curved section distal end to the end, thereby transfer curved section and the terminal respective filling channel of curved section and transfer through the near-end and bend, can make whole curved section of transferring all can transfer curved.
The perfusion channel of the bend tuning pipe section 2 may include: a straight perfusion channel with a central line extending parallel to the central line of the bend-adjusting pipe section 2 along the direction from the proximal end to the distal end of the bend-adjusting pipe section 2 and/or a spiral perfusion channel extending according to a spiral structure around the center of the bend-adjusting pipe section 2 along the direction from the proximal end to the distal end of the bend-adjusting pipe section 2. I.e. the filling channel in the bend adjustment segment 2 may extend parallel to the bend adjustment segment 2 and/or in a spiral configuration around the center of the bend adjustment segment 2. By filling the fluid into the direct filling channel of the bend adjusting pipe section 2, the bend adjusting pipe section can be bent in a plane, for example, when the direct filling channel is located on the left side of the bend adjusting pipe section 2, the bend adjusting pipe section can be bent to the right, and vice versa, so that the bending forms of the bend adjusting pipe section 2 such as up, down, left and right can be adjusted conveniently. The bend adjusting pipe section 2 can be spirally bent in a three-dimensional space by filling fluid into the spiral filling channel of the bend adjusting pipe section 2. Various combined designs can be carried out on the straight perfusion channel and the spiral perfusion channel according to the actual clinical requirements.
The irrigation channel of the support tube segment 1 is a straight irrigation channel extending with a centre line parallel to its own centre line in the proximal to distal direction of the support tube segment 1. The supporting tube section 1 is not bent and deformed along with the change of the pressure in the channel due to the rigidity of the supporting tube section, thereby being convenient for the proximal pushing.
The filling channels of the supporting pipe section 1 and the bending adjusting pipe section 2 are communicated in a plurality of and one-to-one correspondence mode, and the filling channels are distributed at intervals evenly in the circumferential direction, so that bending can be adjusted from all angles of the bending adjusting pipe section 2 conveniently, and the universality is improved. It will be appreciated that the number of infusion channels of the bend regulating section may be greater than the number of infusion channels of the support section 1, in which case the infusion channels of at least one support section 1 communicate with the plurality of infusion channels of the bend regulating section 2. For example, the support pipe section 1 has 4 filling channels, the bend adjusting pipe section 2 has 6 filling channels, and the two filling channels on the upper side and the left side of the support pipe section 1 are respectively connected with the two filling channels on the same side of the bend adjusting pipe section 2, so that the bending form of the bend adjusting pipe section 2 is controlled more.
Referring to fig. 3, the filling channel of the middle bend-adjusting pipe section adopts a straight filling channel extending from the proximal end to the distal end along the axial direction thereof and having a central line parallel to the central line of the middle bend-adjusting pipe section, and the filling channels of the flexible end pipe sections are arranged in a spiral structure from the proximal end to the distal end along the axial direction thereof, and each straight filling channel of the middle bend-adjusting pipe section is respectively communicated with the straight filling channel of one support pipe section 1 and the spiral filling channel of one flexible end pipe section 27. Wherein the intermediate bend adjusting pipe section comprises a flexible sub-pipe section 25, a rigid sub-pipe section 26 and a flexible end pipe section 27. That is, the filling channels of the flexible sub-pipe segment 25 and the rigid sub-pipe segment 26 are direct filling channels, and the filling channels of the flexible end pipe segment 27 are spiral filling channels, and the number of the direct filling channels is 4, and the spiral filling channels are uniformly distributed along the circumferential direction, and the number of the spiral filling channels is also 4, wherein two of the spiral filling channels are of forward spiral structures, and two of the spiral filling channels are of reverse spiral structures, and 4 spiral filling channels are uniformly distributed along the circumferential direction. Thereby controlling the flexible sub-tube section 25 to bend in 4 directions, such as up, down, left and right, and simultaneously controlling the flexible end tube section 27 to be spirally bent in a forward direction or a reverse direction.
It should be noted that the cross-sectional shape and size of the perfusion channel of the support tube segment 1 may be the same as the cross-sectional shape and size of the perfusion channel of the bend adjustment tube segment 2, that is, the cross-sectional area of the perfusion channel of the support tube segment 1 is the same as the cross-sectional area of the perfusion channel of the bend adjustment tube segment 2. Or the sectional area of the perfusion channel of the supporting pipe section 1 can be larger than that of the perfusion channel of the bend adjusting pipe section 2, so that the perfusion speed can be improved conveniently.
The adjustable bending sheath tube can also comprise developing mark points arranged on the periphery of the adjustable bending tube section 2. Specifically, the development marking point may include: a proximal development site 23 disposed on the proximal side of the bend adjusting pipe section 2 and/or a distal development site 24 disposed on the distal end of the bend adjusting pipe section 2. The starting position of bending adjustment of the bending adjustment pipe section 2 can be prompted through the near-end developing point 23, and the ending position of bending adjustment of the bending adjustment pipe section 2 can be prompted through the far-end developing point 24. It is understood that the developer may be injected into the filling channel, and the developer may indicate the bending form of the whole bend adjusting pipe section.
It should be noted that the rigid pipe sections, such as the support pipe section 1 and the rigid sub-pipe section 26, may be made of a high-hardness polymer material or a braided composite material, including but not limited to one or more of the following materials: nylon (Polyamide, PA for short), nylon elastomer (Pebax by Arkema), or polyetheretherketone (Poly-ether-ether-Ketone, PEEK for short). The flexible end tube segments 27, as well as the flexible sub-tube segments 25, may be made of a low durometer polymer material or an elastomer material, including but not limited to one or more of the following: nylon, nylon elastomer, Thermoplastic polyurethane elastomer (TPU for short), silicone or latex. There is no particular limitation as long as the required rigidity and elastic deformability can be satisfied. By way of example and not limitation, the support tube section 1 and the bend adjustment tube section 2 may be manufactured as a single piece, while ensuring that the respective filling channels of the support tube section 1 and the bend adjustment tube section 2 are in coaxial matching communication.
Based on the technical scheme, the embodiment of the utility model at least has the following advantages and positive effects:
the bending-adjustable sheath tube has elastic deformation capability, the bending form of the bending-adjustable tube section can be controlled by adjusting the fluid pressure in the perfusion channel of the bending-adjustable tube section, the bending-adjustable sheath tube has strong bending operability, and the sheath tube is favorable for being closer to the natural blood vessel bending form, so that the sheath tube can be pushed in a way of better conforming to different bending forms of blood vessels. Meanwhile, the sheath tube has simple structure and simple and convenient manufacturing process, and is favorable for clinical popularization and use.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of practicing the utility model, and that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model in practice.
Claims (10)
1. An adjustable bending sheath, comprising: the supporting pipe section and the bending adjusting pipe section are sequentially connected from the near end to the far end;
the supporting pipe section and the bend adjusting pipe section are provided with a plurality of perfusion channels which are communicated from the near end of the supporting pipe section to the far end of the bend adjusting pipe section, the near ends of the perfusion channels are open, and the far ends of the perfusion channels are closed;
At least part of the bend adjusting pipe section has elastic deformation capacity, and the bending form of the bend adjusting pipe section can be controlled by adjusting the fluid pressure in the filling channel.
2. The bend adjustable sheath of claim 1, wherein the bend adjustable segment comprises: a flexible tip segment having a proximal end connected to the distal end of the support segment; wherein each perfusion channel in the flexible tail end pipe section is correspondingly communicated with each perfusion channel in the support pipe section; or alternatively
The bend-adjusting pipe section comprises: the flexible bending adjusting device comprises a middle bending adjusting pipe section and a flexible tail end pipe section which are sequentially connected from a near end to a far end, wherein the near end of the middle bending adjusting pipe section is connected with the far end of the supporting pipe section; the middle bending adjusting pipe section comprises a middle bending adjusting unit or a plurality of middle bending adjusting units which are connected end to end; each middle bending adjusting unit comprises a flexible sub-pipe section and a rigid sub-pipe section which are sequentially connected from a near end to a far end; and the respective perfusion channels of the supporting pipe section, the middle bending adjusting pipe section and the flexible tail end pipe section are correspondingly communicated.
3. The adjustable curved sheath according to claim 2, wherein the perfusion channel of the intermediate curved tube section is a straight perfusion channel extending along its own axial direction from the proximal end to the distal end with its center line parallel to the center line of the intermediate curved tube section, and the perfusion channel of the flexible tip tube section is arranged along its own axial direction in a spiral configuration from the proximal end to the distal end.
4. The adjustable bend sheath of claim 1, wherein the bend-adjusting tube segment comprises a plurality of flexible bend-adjusting tube segments connected in series from a proximal end to a distal end;
and a plurality of filling channels are respectively arranged from the near end of the supporting pipe section to the far end side of each flexible bending adjusting pipe section so as to respectively bend each flexible bending adjusting pipe section.
5. The adjustably curved sheath of claim 1, wherein the irrigation channel of the adjustable curved tube section comprises:
the straight irrigation channel extends along the direction from the near end to the far end of the bend adjusting pipe section in a way that the center line of the straight irrigation channel is parallel to the center line of the bend adjusting pipe section; and/or
A helical irrigation channel extending in a helical configuration around the center of the bend regulating tube section in a proximal to distal direction of the bend regulating tube section.
6. The tunable curved sheath of claim 1, wherein the irrigation channel of the support tube segment is a straight irrigation channel extending with its centerline parallel to its own centerline in a proximal to distal direction of the support tube segment.
7. The adjustable curved sheath tube according to claim 1, wherein the supporting tube section and the adjustable curved tube section have a plurality of perfusion channels which are communicated in a one-to-one correspondence, and the plurality of perfusion channels are circumferentially and uniformly distributed at intervals.
8. The adjustable curved sheath according to claim 1, wherein the number of perfusion channels of the curved tube section is greater than the number of perfusion channels of the support tube section, and the perfusion channel of at least one of the support tube sections is in communication with the plurality of perfusion channels of the curved tube section.
9. The adjustable bending sheath tube of claim 1, further comprising a visualization marking point disposed at an outer periphery of the adjustable bending tube section;
the development marking point includes: and the near-end developing point is arranged at the near-end side of the bend adjusting pipe section and/or the far-end developing point is arranged at the far end of the bend adjusting pipe section.
10. The adjustable bend sheath of claim 2, wherein the flexible tip segment and the flexible sub-segment are made of: nylon, nylon elastomers, thermoplastic polyurethane elastomers, silicone or latex;
the support tube section and the rigid sub-tube section are made of the following materials: nylon, nylon elastomer or polyetheretherketone.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122816592.2U CN216824432U (en) | 2021-11-17 | 2021-11-17 | Adjustable curved sheath pipe |
| PCT/CN2021/139706 WO2023087477A1 (en) | 2021-11-17 | 2021-12-20 | Bending-adjustable sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122816592.2U CN216824432U (en) | 2021-11-17 | 2021-11-17 | Adjustable curved sheath pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216824432U true CN216824432U (en) | 2022-06-28 |
Family
ID=82103395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122816592.2U Active CN216824432U (en) | 2021-11-17 | 2021-11-17 | Adjustable curved sheath pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216824432U (en) |
-
2021
- 2021-11-17 CN CN202122816592.2U patent/CN216824432U/en active Active
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