CN110811704A - Single-layer thin-wall pipe fitting - Google Patents
Single-layer thin-wall pipe fitting Download PDFInfo
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- CN110811704A CN110811704A CN201810923496.8A CN201810923496A CN110811704A CN 110811704 A CN110811704 A CN 110811704A CN 201810923496 A CN201810923496 A CN 201810923496A CN 110811704 A CN110811704 A CN 110811704A
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- layer thin
- connecting frame
- elastic connecting
- strip
- connecting body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/003—Steerable
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- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Pathology (AREA)
- Manipulator (AREA)
Abstract
The invention relates to a single-layer thin-wall pipe fitting which is a hollow structure and comprises a near-end structure, a transmission part and a far-end structure, wherein the transmission part is a long and thin strip and is uniformly distributed along the circumferential direction of the axis of the pipe fitting, the near-end structure comprises a connecting frame and an elastic connecting body, the connecting frame is connected with the elastic connecting body, the elastic connecting body is connected with the long and thin strip, the long and thin strip is arranged to receive input motion at a near-end effector of a near end and slide relative to the connecting frame under the symmetrical constraint force provided by the elastic connecting body, and the far-end structure is connected with the long and thin strip and is driven by the long and thin. Compared with the prior art, the invention has the advantages that all the structures are distributed on the circumferential surface of the single-layer thin-wall piece, the design is compact, the manufacture is easy, the cost is low, and the bending deformation of the near end and the far end can be controlled.
Description
Technical Field
The invention relates to the field of minimally invasive surgery medical instruments, in particular to a single-layer thin-wall pipe fitting.
Background
The minimally invasive surgery refers to the surgery performed by using modern medical instruments such as laparoscopes, thoracoscopes and the like and related equipment. Minimally invasive surgery has the advantages that small trauma, light pain and quick recovery are the dream of every patient needing surgery, and the dream is realized by the minimally invasive surgery.
Most of the existing steerable tubes are provided with holes on the periphery of a tube, and the proximal end is controlled to the distal end in the holes through a rope structure so as to achieve the purpose of bending deformation. This type of structure increases the cross-sectional size of the pipe, and crosstalk easily occurs between ropes, making it difficult to achieve precise control. Other processing technologies are needed to be adopted at the head of the rope, so that the head of the rope is coupled, and the parallel motion among a plurality of ropes can be realized, and further the control on the head of the pipe fitting is realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a single-layer thin-wall pipe fitting.
The purpose of the invention can be realized by the following technical scheme:
a single-layer thin-wall pipe fitting can be used in the field of minimally invasive surgery, such as endoscope, intravascular surgery, surgical operation and the like, and realizes accurate operation, the pipe fitting is a hollow structure and comprises a near-end structure, a transmission part and a far-end structure,
the transmission parts are slender strips which are uniformly distributed along the circumferential direction of the axis of the pipe fitting,
the near-end structure comprises a connecting frame and an elastic connecting body, the slender strip is driven to slide by a near-end effector arranged at the near end, the connecting frame is connected with the elastic connecting body, the elastic connecting body is connected with the slender strip, the slender strip is arranged to receive the input motion of the near-end effector at the near end and realize the sliding relative to the connecting frame under the symmetrical constraint force provided by the elastic connecting body,
the distal structure is connected with the elongated strip and is subjected to flexural deformation under the driving of the elongated strip.
A slit is provided between the head portions of the proximal elongate strips, the presence of the slit allowing relative slippage between the strips.
The elongated strip is slidably moved in the axial direction by the proximal end effector.
The elongated strips are connected to each other by the elastic connecting body.
The elastic connecting body is of an approximate annular structure and is arranged along the circumferential direction of the axis of the pipe fitting, the roundness of the thin-wall structure is guaranteed in the process that the strip slides along the axial direction, and the elastic connecting body can extend/contract along the length direction of the elongated strip and swing around the connecting part, so that the elongated strip approximately moves along the axis at the near end and can bend and twist at the transmission part and the far end.
The elastic connecting bodies are connected through connecting frames, and the connecting frames are connected with the fixing devices in a certain mode to ensure that the long and thin strips can slide relatively.
The elastic connecting body is composed of spring bodies which are sequentially connected end to end, the spring bodies are symmetrically distributed on two sides of the connecting frame, one end of each spring body is connected with the connecting frame, the other end of each spring body is connected with the slender strip, and extension and compression along the length direction and swinging around the connecting position of the connecting frame and the strip body can be realized. The spring bodies are symmetrically distributed along two sides of the connecting frame, so that the elongated strip can be ensured to continuously exert symmetrical constraint force, the elongated strip approximately moves along the axis at the near end, can be bent and twisted at the transmission part and the far end, and finally realizes the bending deformation of the far end.
The connecting frames are parallel to the slender strips and are uniformly distributed along the circumferential direction of the axis of the pipe fitting.
The distal structure is a distal effector, for example, a ring-shaped locking tip may be employed.
Compared with the prior art, the near end structure can transmit load to the elongated strips which are uniformly distributed, so that the motion is transmitted to the far end structure part to realize the flexural deformation of the far end structure, the near end is used for controlling the far end, and the roundness of the pipe fitting structure is still kept under a certain load condition. The medical equipment has a simple structure, only needs a single-layer thin-wall pipe structure, does not need a complex assembly structure, and can realize the bending deformation of the near-end control far-end.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is a ring-shaped locking end, 2 is a slender strip, 3 is a connecting frame, 4 is an elastic connecting body, 5 is a near-end effector, 6 is an axis, 7 is a strip seam, 8 is a single-layer thin-wall pipe fitting, 9 is a far-end structure, and 10 is a near-end structure.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Examples
A single-layer thin-wall tube 8 is shown in FIG. 1, and has a hollow structure, including a proximal structure 10, a transmission part, and a distal structure 9. Wherein, the transmission part is slender strip 2, as shown in this embodiment, a plurality of slender strips 2 that set up evenly distributed along the circumference of axis 6, near-end structure 10 includes link 3, elastic connection body 4, and slender strip 2 slides along the axis direction through the drive of the near-end effector 5 that sets up at the near-end, and link 3 is connected with elastic connection body 4, and elastic connection body 4 is connected with slender strip 2, and distal end structure 9 is flexible deformation region, is connected 2 with slender strip. The proximal structure 10 thus achieves a load transfer to the elongated strips 2 that is evenly distributed, so that the transfer of motion to the distal structure 9 partially achieves a flexural deformation of the distal structure 9.
Specifically, the elastic connecting bodies 4 are symmetrically distributed on both sides of the connecting frame 3, and each group of elastic connecting bodies 4 comprises a plurality of spring bodies which are distributed at intervals along the length direction of the connecting frame 3. One end of each spring body is connected with the connecting frame 3, the other end is connected with the slender strip 2, and the extension and the compression along the length direction and the swinging around the connecting part of the connecting frame and the strip body can be realized. The spring bodies are symmetrically distributed along two sides of the connecting frame, so that the elongated strip can be ensured to continuously exert symmetrical constraint force, the elongated strip approximately moves along the axis at the near end, can be bent and twisted at the transmission part and the far end, and finally realizes the bending deformation of the far end.
A slot is provided between the heads of the proximal elongate strips 2, the presence of which enables relative slippage between the strips. The elongate strips 2 are connected to each other by elastic connections 4. The elastic connecting body 4 is of an approximate annular structure and is arranged along the circumferential direction of the axis 6, so that the roundness of the thin-wall structure is ensured in the process that the strip slides along the axial direction. And the elastic connecting bodies 4 are connected through the connecting frames 3, and the connecting frames 3 are connected with the fixing device in a certain mode so as to ensure that the slender strips can slide relatively. The connecting frames 3 are parallel to the elongated strips 2 and are evenly distributed along the circumference of the pipe axis. The distal structure 10 is a distal effector, such as a ring-shaped locking tip 1 in this embodiment, for constraining the elongate strip 2.
The invention can be used in the field of minimally invasive surgery, such as endoscope, endovascular surgery, surgical operation and the like, and realizes accurate operation. The proximal structure can transfer load to the elongated strips which are evenly distributed, so that the motion is transferred to the distal structure part to realize the deflection deformation of the distal structure, and the roundness of the pipe fitting structure is still maintained under a certain load condition by using the proximal control distal end. The medical equipment has a simple structure, only needs a single-layer thin-wall pipe structure, does not need a complex assembly structure, and can realize the bending deformation of the near-end control far-end.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (9)
1. A single-layer thin-wall pipe is characterized in that the pipe is a hollow structure and comprises a near-end structure, a transmission part and a far-end structure,
the transmission parts are slender strips which are uniformly distributed along the circumferential direction of the axis of the pipe fitting,
the near-end structure comprises a connecting frame and an elastic connecting body, the connecting frame is connected with the elastic connecting body, the elastic connecting body is connected with the slender strip, the slender strip is arranged to receive input motion at a near-end effector of the near end, and the slender strip slides relative to the connecting frame under the symmetrical constraint force provided by the elastic connecting body,
the distal structure is connected with the elongated strip and is subjected to flexural deformation under the driving of the elongated strip.
2. Single-layer thin-walled tube according to claim 1, characterized in that slits are provided between the heads of the proximal elongated strips.
3. The single-layer thin-walled tube as claimed in claim 1, wherein the elongated strip is axially slidably moved by a proximal effector.
4. The single-layer thin-walled tube as claimed in claim 1, wherein the elongated strips are connected to a connecting frame via the elastic connecting bodies, and the connecting frame is fixedly connected to the outside.
5. Single-layer thin-walled tube according to claim 1 or 4, wherein the elastic connecting body is of a substantially ring-shaped configuration, arranged circumferentially around the axis of the tube, and is capable of elongating/contracting along the length of the elongated strip and swinging about the joint.
6. Single-layer thin-walled tube according to claim 1, characterized in that the elastic connecting body is formed by spring bodies connected end to end in sequence, the spring bodies are symmetrically arranged on both sides of the connecting frame, one end of each spring body is connected with the connecting frame, and the other end is connected with the elongated strip.
7. Single-layer thin-walled tube according to claim 1, characterized in that said connecting frames are parallel to said elongated strip, evenly distributed in the circumferential direction of the tube axis.
8. The single-layer thin-walled tube of claim 1, wherein the distal structure is a distal effector.
9. The single-layer thin-walled tube of claim 8, wherein the distal effector is an annular locking tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923496.8A CN110811704B (en) | 2018-08-14 | 2018-08-14 | Single-layer thin-wall pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923496.8A CN110811704B (en) | 2018-08-14 | 2018-08-14 | Single-layer thin-wall pipe fitting |
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| Publication Number | Publication Date |
|---|---|
| CN110811704A true CN110811704A (en) | 2020-02-21 |
| CN110811704B CN110811704B (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810923496.8A Active CN110811704B (en) | 2018-08-14 | 2018-08-14 | Single-layer thin-wall pipe fitting |
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| CN (1) | CN110811704B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6749560B1 (en) * | 1999-10-26 | 2004-06-15 | Circon Corporation | Endoscope shaft with slotted tube |
| CN101938933A (en) * | 2008-02-05 | 2011-01-05 | 弗兰克·德瓦勒 | Steerable tube |
| CN104771226A (en) * | 2014-01-13 | 2015-07-15 | 上海工程技术大学 | Interventional device for mini-invasive surgical treatment of cerebral hemorrhage |
| CN106943114A (en) * | 2017-04-27 | 2017-07-14 | 泗洪县正心医疗技术有限公司 | A kind of expandable endoscope in end |
| CN107666873A (en) * | 2014-12-05 | 2018-02-06 | 微创手术医疗器械公司 | The method of instrument can be manipulated for manufacturing and this manipulates instrument |
-
2018
- 2018-08-14 CN CN201810923496.8A patent/CN110811704B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6749560B1 (en) * | 1999-10-26 | 2004-06-15 | Circon Corporation | Endoscope shaft with slotted tube |
| CN101938933A (en) * | 2008-02-05 | 2011-01-05 | 弗兰克·德瓦勒 | Steerable tube |
| CN104771226A (en) * | 2014-01-13 | 2015-07-15 | 上海工程技术大学 | Interventional device for mini-invasive surgical treatment of cerebral hemorrhage |
| CN107666873A (en) * | 2014-12-05 | 2018-02-06 | 微创手术医疗器械公司 | The method of instrument can be manipulated for manufacturing and this manipulates instrument |
| CN106943114A (en) * | 2017-04-27 | 2017-07-14 | 泗洪县正心医疗技术有限公司 | A kind of expandable endoscope in end |
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| Publication number | Publication date |
|---|---|
| CN110811704B (en) | 2022-04-01 |
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