CN115607265A - Support assembly suitable for controllable bent catheter and controllable bent catheter - Google Patents
Support assembly suitable for controllable bent catheter and controllable bent catheter Download PDFInfo
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- CN115607265A CN115607265A CN202211331835.6A CN202211331835A CN115607265A CN 115607265 A CN115607265 A CN 115607265A CN 202211331835 A CN202211331835 A CN 202211331835A CN 115607265 A CN115607265 A CN 115607265A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00595—Cauterization
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Abstract
The invention provides a supporting assembly suitable for a controllable bent catheter and the controllable bent catheter, wherein the supporting assembly suitable for the controllable bent catheter comprises a plurality of supporting units which are abutted in sequence, and the two adjacent supporting units are in surface contact; two adjacent supporting units can rotate relatively. The two adjacent supporting units are in surface contact in a butt joint mode, so that the contact area of the two adjacent supporting units can be effectively increased, the probability of relative rolling or sliding is reduced, the problem that an inner cavity channel is narrowed due to offset of the supporting units is reduced or avoided, and the effect of improving the bending control performance is achieved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a supporting assembly suitable for a controllable bent catheter and the controllable bent catheter.
Background
In view of the flexibility and safety of the steerable catheter (hereinafter referred to as "catheter"), the catheter is widely used in various procedures for treating atrial fibrillation. When the catheter is used, the catheter needs to be placed into the inner cavity of the sheath tube and reaches the ablation target space of the left atrium along with the sheath tube. In the process, the self-contained bending of the sheath provides an initial bend towards the target ablation region, allowing the catheter to reach the predetermined region where the target ablation region is located. Then, the fit between the energy output end and the target ablation region needs to be realized through bending control of the catheter, and whether the fit state between the energy output end and the target ablation region is good or not directly determines the effect of the operation.
Existing steerable catheter tubes use a spring tube to provide support. Because the cross-section of the spring tube is circular, when the catheter needs to be bend-controlled, several situations can occur: 1) When the main body pipe is in a straight state for bending control, the spring pipe is easy to bend and deform under the tension of the bending control wire, so that the main body pipe is bent in a snake shape; 2) When bending control is carried out on the main body pipe in a bending state, the spring pipe can generate larger bending deformation under the action of the tension of the bending control wire, so that the main body pipe generates very serious snake-shaped bending; 3) When the bending state of the main body tube is not controlled, the bending of the spring tube causes the inner cavity of the spring tube to be narrowed. Under all three conditions, friction force which has certain negative influence on bending control is generated, so that the bending control cannot meet the requirement of the operation type.
Disclosure of Invention
In view of the above, the present invention provides a support assembly suitable for a steerable catheter and a steerable catheter, so as to achieve the purpose of improving the bending control performance of the steerable catheter.
The embodiment of the specification provides the following technical scheme:
a supporting assembly suitable for a controllable bent catheter comprises a plurality of supporting units which are abutted in sequence, and two adjacent supporting units are in surface contact; the adjacent two supporting units can rotate relatively.
Further, the plurality of support units which are sequentially abutted have a spiral structure.
Furthermore, the outer parts of the plurality of supporting units which are sequentially abutted are also coated with outer skin layers.
Further, a plurality of supporting units that butt in proper order all are independent each other, and a plurality of supporting units's that butt in proper order outside still cladding has outer skin layer.
Further, each support unit has two oppositely disposed upper and lower ends.
Furthermore, the upper end part is an upper end surface, and the lower end part is a lower end surface; the lower end face and the upper end face of each two adjacent supporting units, which are in contact with each other, are in plane contact in an assembling state and in line contact in a rotating state.
Further, the cross-sectional shape of the support unit is rectangular or drum-shaped.
Furthermore, the upper end part is provided with a protruding part, the lower end part is provided with a groove part, and the protruding part of one supporting unit of the two adjacent supporting units is correspondingly matched with the groove part of the other supporting unit of the two adjacent supporting units to be abutted and limited.
Furthermore, each supporting unit is provided with a support with a rectangular cross section, the upper end face of the support is provided with an outer flange with a semicircular cross section, the protruding end face of the outer flange faces to the side away from the support, the lower end face of the support is provided with a groove matched with the structure of the outer flange, and when the supporting units are in an assembling state, the outer flange of one of the two adjacent supporting units is correspondingly matched and abutted with the groove of the other supporting unit; and the lower end face and the upper end face of each two adjacent supporting units, which are in contact with each other, are in cambered surface contact in an assembling state and a rotating state.
The utility model provides a support assembly suitable for controllable curved pipe, includes that cross sectional shape is oval-shaped supporting element, and a plurality of supporting element are followed supporting element's minor axis direction is the butt in proper order, and can rotate relatively between two adjacent supporting element.
The invention also provides a controllable bending catheter which comprises the support assembly.
Compared with the prior art, the beneficial effects that can be achieved by the at least one technical scheme adopted by the embodiment of the specification at least comprise:
1. the large-enough cavity channel can be provided for the bending control wire under the condition that the catheter is bent, and meanwhile, the large-enough load can be borne, so that the bending control effect of the catheter is ensured;
2. due to point contact of the round spring, pretightening force needs to be preset in the production process, so that enough supporting force is provided in the subsequent bending control process;
3. after the accuse is bent and is accomplished, this application scheme because interior passageway does not warp, and the time of accuse curved inflection is bent rapidly, the unable circumstances of bending that can not appear takes place.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the first embodiment of the present invention in an assembled state;
FIG. 2 is a schematic view of the first embodiment of the present invention in a rotated state; FIG. 3A is a schematic view of the second embodiment of the present invention in an assembled state;
FIG. 3B is a schematic view of the second embodiment of the present invention in a rotated state;
FIG. 4A is a schematic structural view of a third embodiment of the present invention in an assembled state;
FIG. 4B is a schematic view of the third embodiment of the present invention in a rotated state;
FIG. 5A is a schematic view of the fourth embodiment of the present invention in an assembled state;
FIG. 5B is a schematic view of the fourth embodiment of the present invention in a rotated state;
FIG. 6A is a schematic view of a fifth embodiment of the present invention in an assembled state;
FIG. 6B is a schematic view of the fifth embodiment of the present invention in a rotated state;
fig. 7A is a schematic structural view of the sixth embodiment of the present invention in an assembled state.
FIG. 7B is a schematic view of the sixth embodiment of the present invention in a rotated state;
fig. 8A is a schematic view of a structure in an assembled state according to the prior art.
FIG. 8B is a schematic view of a prior art configuration in a rotated state;
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 7B, an embodiment of the present invention provides a support assembly suitable for a steerable catheter, including a plurality of support units abutting in sequence, where two adjacent support units are in surface contact with each other; two adjacent supporting units can rotate relatively.
According to the embodiment of the invention, the two adjacent supporting units are in a surface contact abutting mode, so that the contact area of the two adjacent supporting units can be effectively increased, the probability of relative rolling or sliding is reduced, the problem of narrowing of an inner cavity channel caused by the dislocation of the supporting units is reduced or avoided, and the effect of improving the bending control performance is achieved.
In one embodiment, the plurality of sequentially abutting support units are all independent of each other. Each supporting unit is of an annular structure and is sequentially stacked along the axial direction to form an inner cavity channel at the middle position. Meanwhile, in order to ensure the connection stability between the support units of the present embodiment, an outer skin structure may be wrapped outside each support unit in the present embodiment, so that the support units independent from each other may be connected into a whole through the outer skin structure.
In another embodiment, the plurality of sequentially abutted supporting units are in a spiral structure. In this embodiment, each supporting unit is a layer of spiral ring structure, and two adjacent supporting units are stacked and tightly abutted to each other to form an inner cavity channel at the middle position. According to the embodiment, the outer skin structure can be coated outside each supporting unit according to the requirement, and the method can also be directly used in a mode of not coating the outer skin structure.
Each support unit has two oppositely disposed upper and lower ends.
In a specific embodiment, the upper end portion is an upper end surface, and the lower end portion is a lower end surface. The lower end face and the upper end face of each two adjacent supporting units, which are in contact with each other, are in plane contact in an assembling state. In the embodiment of the invention, the cross section of the supporting unit is rectangular or drum-shaped. As shown in fig. 1 and 2, each support unit has a rectangular cross section, and end surfaces of two adjacent rectangular structures are abutted to form a surface contact form. During rotation, the surface-surface contact mode is converted into the line-surface contact mode, so that compared with the point-point contact mode in the prior art, the sliding is more difficult to occur and the size of the inner cavity is changed.
As shown in fig. 3A and 3B, this embodiment may also adopt a rounded rectangle structure, and this structure enables the rounded corner and the plane to abut against each other in the rotation process, thereby avoiding the problem of damage to the right angle due to the excessively sharp right angle in the above embodiments, and improving the service life of this embodiment.
As shown in fig. 4A and 4B, the supporting units may also be in a drum shape, wherein parallel end surfaces of the drum shape serve as abutting surfaces of two adjacent supporting units, and two opposite arc end surfaces of the drum shape form outer walls and inner walls of the plurality of supporting units, respectively. During the rotation process, two planes of the drum-shaped structure rotate, and the specific rotation process description may refer to the above rectangular structure or rounded rectangular structure, which is not described herein again.
As shown in fig. 5A and 5B, in another embodiment of the present invention, the upper end portion is provided with a protruding portion, the lower end portion is provided with a groove portion, and the protruding portion of one of the two adjacent supporting units is correspondingly matched with the groove portion of the other of the two adjacent supporting units to abut against the limit.
Specifically, each supporting unit has an arch-shaped cross section, that is, the upper end of each supporting unit is an outer arch-shaped structure protruding upward, and the lower end of each supporting unit is an inner arch-shaped structure recessed inward. When the two rotate, the arc surface rotates, compared with the technical scheme in the prior art, the embodiment can avoid the problem that the inner cavity becomes small, and therefore the purpose of improving bending control performance is achieved.
Further, as shown in fig. 6A and 6B, each supporting unit is provided with a support with a rectangular cross section, the upper end surface of the support is provided with an outer flange with a hemispherical structure, the protruding end surface of the outer flange faces the side away from the support, the lower end surface of the support is provided with a groove matched with the structure of the outer flange, when the supporting unit is in an assembled state, the outer flange of the supporting unit below abuts against the groove of the supporting unit above, and the outer flange of one of the two adjacent supporting units corresponds to the groove of the other supporting unit to be matched and abutted. So that the embodiment can realize rotation of any angle, the rotation process of the spherical surface of the bearing with a stop gear (provided by the contact surface of the bearing) in each rotation direction can be referred to the rotation process of the arch structure, and the rotation process of the bearing can be referred to the rotation process of the rectangular structure, and the details are not described here.
Of course, the shape of the seat or the shape of the protrusion (groove) in the above embodiments may be changed according to different requirements, for example, a non-regular cross-sectional shape is adopted, but such a modified structure is within the scope of the present application.
As shown in fig. 7A and 7B, an embodiment of the present invention further provides a supporting assembly suitable for a steerable catheter, which includes a plurality of supporting units that abut against each other in sequence, and each supporting unit has an oval cross-sectional shape, and long axes of two adjacent supporting units are parallel to each other.
In this embodiment, the supporting units with elliptical cross-sections are stacked in sequence, and the long axes of two adjacent supporting units are parallel to each other (in an unbent state), and the short axes of two adjacent supporting units are collinear (in an unbent state) and parallel to the axis of the whole supporting assembly suitable for the steerable catheter. Due to the fact that the connecting mode that the elliptical cross section is arranged and the short axis direction is the axial direction is adopted, the sliding distance of the embodiment in the turning process can be increased, and the problem that an inner cavity is reduced due to the fact that two adjacent supporting units are separated is avoided.
In an embodiment, not shown in the drawings, the supporting units are stacked in sequence, the outer part of each supporting unit is wrapped by an outer skin, and the cross-sectional shape of each supporting unit is one or more of the cross-sectional shapes described in the embodiments. In this embodiment, other technical features except the above features are the same as those in the previous embodiment, and are not described herein again.
In embodiments of the present invention, each support element is preferably made of metal, insulated by an outer skin layer of plastic and the various wires within the catheter. Each support unit can also be made of plastics, such as Polyetheretherketone (PEEK), polyetherimide (PEI), polyphenylene sulfone (PPSU), polycarbonate (PC), polyoxymethylene (POM), so that the process difficulty can be reduced, and each support unit has an insulating function.
In the above embodiments, the supporting force is sequentially increased and the bending control characteristic is sequentially enhanced under three conditions (1. Bending control of the main body tube in a straight state; 2. Bending control of the main body tube in a bent state; and 3. Bending control of the main body tube in a bent state).
Furthermore, the invention also provides a steerable catheter, which comprises the support component suitable for the steerable catheter.
The invention has the beneficial effects that:
1. the large-enough cavity channel can be provided for the bending control wire under the condition that the catheter is bent, and meanwhile, the large-enough load can be borne, so that the bending control effect of the catheter is ensured;
2. due to point contact of the round spring, pretightening force needs to be preset in the production process, so that enough supporting force is provided in the subsequent bending control process;
3. after the accuse is bent to accomplish, this application scheme because the inner passage does not warp, and the time of accuse curved inflection is bent back rapidly, and the unable circumstances of bending back can not appear taking place.
The structure and stress of the prior art are described below by taking the radio frequency ablation controllable bend as an example.
A radio frequency ablation controllable bent catheter in the prior art is sequentially provided with a rotating handle, a main body tube and a head end tube from a near end to a far end; a cavity is arranged in the main body pipe, and a spring pipe assembly is arranged in the cavity; the spring tube component at least comprises a spring tube applied with pretightening force, and the spring tube is fixedly connected with the main tube; because the cross section of the spring wire of the spring tube in the prior art is circular (as shown in fig. 8A), a certain gap is formed between two adjacent spring wires to meet the supporting and bending functions of the main tube; in addition, in order to enhance the strength of the main body tube, the prior art also arranges a reinforced tube in the main body tube, and at the moment, the spring tube is fixedly connected with the reinforced tube; or, in the prior art, a protective sleeve (for example, a polyimide tube) is bonded outside the spring tube to which the pre-tightening force is applied, and the protective sleeve is fixedly connected with the main tube or the reinforcing tube; the head tube is provided with at least one eccentric hole, and the far end is provided with a head electrode; the head electrode is generally a blind via structure.
The catheter also comprises a bending control wire, one end of the bending control wire is fixedly connected with the rotating handle, and the other end of the bending control wire penetrates through the cavity of the main body tube and is fixedly connected with the inner side wall of the head end tube or the inner side wall of the head electrode; when the rotating handle rotates, the bending control wire can be pulled to move towards the direction of the rotating handle, so that the bending control wire can generate a pulling force towards the direction of the rotating handle; because the head end pipe is provided with the eccentric hole, when the rotating handle rotates, the bending control wire can pull the head end pipe to bend towards the direction of the eccentric hole.
The structure needs of spring tube subassembly, can enough realize that the side bend of head end pipe realizes controlling the bending, can provide sufficient radial holding power again for the main part pipe and make the pipe control under arbitrary state and bend and can both make the bending type reach anticipated effect, if the pretightning force of spring tube subassembly is too big can lead to the spring tube snakelike bending to appear (like the position that the arrow pointed in fig. 8B), if the pretightning force of spring tube subassembly is too little can lead to unable completion to control the bending (exert and control the power that the bending was carried out to the accuse curved silk, will accomplish the deformation of spring tube earlier and accomplish again and control the bending, still can't control the bending and lead to unable completion to control the bending if the pretightning force is too little can lead to exerting when great accuse bending power).
When bending is controlled, an operator applies a pushing force F towards the head end pipe (upwards) to the handle core, the handle core changes the direction of the pushing force, so that the bending control wire is subjected to a pulling force F towards the handle core (downwards), and the head end pipe is bent after being pulled by the downward pulling force F provided by the bending control wire and gradually forms a set bending shape; assuming that the friction force between the bending control wire and the inner cavity of the head end pipe is F, and the bent head end pipe applies downward pressure F2 to the spring pipe and the main pipe, F2= F-F; the positions of the spring tube and the main tube corresponding to the region where the head end tube is bent and the positions of the spring tube and the main tube corresponding to the radially opposite region of the region are different in magnitude, wherein the spring tube provides an upward supporting force F1, the main tube provides an upward supporting force F3, and the spring tube and the main tube are combined to resist the F2, namely: f2= F1+ F3, so that the proximal end of the head end tube can still be fixed to the distal end of the main tube and the distal end of the head end tube realizes the bending;
the main tube and the spring tube are pressed downwards together by F2, the spring tube provides an upward supporting force F1, the main tube provides an upward supporting force F3, and the spring tube and the main tube are combined to resist F2, namely: f2= F1+ F3, the main tube is not bent, the spring tube compresses and applies a downward pressure F1 to the handle core;
the compressed spring tube applies a downward pressure F1 to the handle core, and the friction inside the handle core can just counterbalance F1.
Supposing that the crushing pressure of the spring tube is delta F;
if deltaF is less than F1, the main body pipe needs to provide larger supporting force, and the spring pipe and the main body pipe can resist downward pressure F2 applied by the head end pipe together; the spring tube is stressed to be close to the crushing pressure, the spring tube can generate bending deformation, and the bending control wire can be contacted with the spring tube to generate friction force; the main body pipe is stressed greatly and can generate snake-shaped bends with large deformation; under the influence of friction force and large serpentine bending, bending cannot be controlled;
if delta F is more than F1 and delta F is less than F3, the stress of the spring tube approaches to the crushing pressure, the spring tube can generate bending deformation, and the bending control wire can be contacted with the spring tube to generate friction force; and the main pipe may have slight snake-shaped bending due to stress; under the influence of friction force and serpentine bending, bending control can be influenced, so that bending control cannot be achieved;
if delta F is larger than F1 and delta F is larger than F3, the stress of the spring tube is smaller than the crushing pressure, the spring tube has no bending deformation, the main tube is hardly stressed and cannot be bent in a snake shape, the contact between the spring tube and the bending control wire is small, at the moment, the bending control wire can provide the bending control force of the head end tube in the tube cavity of the spring tube with the minimum friction loss, and the bending control effect is best. Therefore, the invention is not limited to the specific embodiments and the scope of the invention, and all the equivalent components, or equivalent changes and modifications made according to the protection scope of the present invention should be covered by the present patent. In addition, the technical features, the technical schemes and the technical schemes can be freely combined and used.
Claims (11)
1. The supporting assembly suitable for the controllable bent catheter is characterized by comprising a plurality of supporting units which are abutted in sequence, wherein the two adjacent supporting units are in surface contact; the adjacent two supporting units can rotate relatively.
2. The support assembly for a steerable catheter according to claim 1, wherein a plurality of the sequentially abutting support units are in a helical configuration.
3. The support assembly for steerable catheter according to claim 2, wherein the exterior of the plurality of sequentially abutting support elements is further coated with an outer skin layer.
4. The support assembly for steerable catheter according to claim 1, wherein the plurality of sequentially abutting support units are all independent of each other, and the exterior of the plurality of sequentially abutting support units is further covered with an outer skin layer.
5. The support assembly for a steerable catheter according to any of claims 1 to 4, wherein each of the support units has two oppositely disposed upper and lower ends.
6. The support assembly for a steerable catheter according to claim 5, wherein the upper end is an upper end face and the lower end is a lower end face; the lower end face and the upper end face of each two adjacent supporting units, which are in contact with each other, are in plane contact in an assembling state and in line contact in a rotating state.
7. The support assembly for a steerable catheter according to claim 6, wherein the cross-sectional shape of the support unit is rectangular or drum-shaped.
8. The support assembly of claim 5, wherein the upper end portion is provided with a protrusion portion, the lower end portion is provided with a groove portion, and the protrusion portion of one of the two adjacent support units is correspondingly engaged with and abutted against the groove portion of the other of the two adjacent support units for limiting.
9. The support assembly suitable for the steerable catheter according to claim 8, wherein each support unit is provided with a support with a rectangular cross section, an outer flange with a semicircular cross section is provided on an upper end face of the support, a protruding end face of the outer flange faces to a side away from the support, a groove adapted to the structure of the outer flange is provided on a lower end face of the support, and in an assembled state, the outer flange of one support unit of two adjacent support units is correspondingly and cooperatively abutted with the groove of the other support unit; and the lower end face and the upper end face of each two adjacent supporting units, which are in contact with each other, are in cambered surface contact in an assembling state and a rotating state.
10. The utility model provides a support assembly suitable for controllable curved pipe which characterized in that, includes that cross sectional shape is oval-shaped supporting element, and is a plurality of supporting element follows supporting element's minor axis direction is the butt in proper order, and adjacent two can rotate relatively between the supporting element.
11. A steerable catheter comprising a support assembly, wherein the support assembly is as claimed in any one of claims 1 to 10 adapted for use with a steerable catheter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211331835.6A CN115607265A (en) | 2022-10-28 | 2022-10-28 | Support assembly suitable for controllable bent catheter and controllable bent catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211331835.6A CN115607265A (en) | 2022-10-28 | 2022-10-28 | Support assembly suitable for controllable bent catheter and controllable bent catheter |
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| Publication Number | Publication Date |
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| CN115607265A true CN115607265A (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211331835.6A Pending CN115607265A (en) | 2022-10-28 | 2022-10-28 | Support assembly suitable for controllable bent catheter and controllable bent catheter |
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| CN (1) | CN115607265A (en) |
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| US20080262422A1 (en) * | 2007-04-18 | 2008-10-23 | Nmt Medical, Inc. | Flexible Catheter System |
| US20110282149A1 (en) * | 2002-09-12 | 2011-11-17 | Intuitive Surgical Operations, Inc. | Shape-transferring cannula system and method of use |
| CN105011894A (en) * | 2015-08-17 | 2015-11-04 | 上海延视医疗科技有限公司 | Solid multi-cavity component and snake skeleton with solid multi-cavity components |
| CN108113628A (en) * | 2018-01-09 | 2018-06-05 | 浙江成运医疗器械有限公司 | Without rivet snake bone component |
| CN208769736U (en) * | 2018-02-02 | 2019-04-23 | 杭州鑫泽源精密制品有限公司 | A kind of endoscope snake bone |
| CN111714067A (en) * | 2020-07-21 | 2020-09-29 | 湖南省华芯医疗器械有限公司 | Snake bone assembly and endoscope |
| CN112890739A (en) * | 2021-02-26 | 2021-06-04 | 天津大学 | Medical endoscope insertion unit |
-
2022
- 2022-10-28 CN CN202211331835.6A patent/CN115607265A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110282149A1 (en) * | 2002-09-12 | 2011-11-17 | Intuitive Surgical Operations, Inc. | Shape-transferring cannula system and method of use |
| US20080262422A1 (en) * | 2007-04-18 | 2008-10-23 | Nmt Medical, Inc. | Flexible Catheter System |
| CN105011894A (en) * | 2015-08-17 | 2015-11-04 | 上海延视医疗科技有限公司 | Solid multi-cavity component and snake skeleton with solid multi-cavity components |
| CN108113628A (en) * | 2018-01-09 | 2018-06-05 | 浙江成运医疗器械有限公司 | Without rivet snake bone component |
| CN208769736U (en) * | 2018-02-02 | 2019-04-23 | 杭州鑫泽源精密制品有限公司 | A kind of endoscope snake bone |
| CN111714067A (en) * | 2020-07-21 | 2020-09-29 | 湖南省华芯医疗器械有限公司 | Snake bone assembly and endoscope |
| CN112890739A (en) * | 2021-02-26 | 2021-06-04 | 天津大学 | Medical endoscope insertion unit |
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