Blood vessel guiding sheath for interventional operation
By designing a vascular guide sheath with first and second operating components, the problem of insufficient bending accuracy in the prior art is solved, and higher bending accuracy and ease of operation of the sheath are achieved in interventional surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SYNEXMED SHENZHEN
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-28
AI Technical Summary
The existing vascular guide sheaths lack precision during the bending process and cannot be adjusted to different positions of the sheath.
A vascular guidance sheath comprising a sheath tube, a first operating component, and a second operating component was designed. The first operating component controls the bending of the main body segment, and the second operating component controls the bending of the interventional segment, thereby achieving precise adjustment of the sheath tube at different positions.
It improves the bending accuracy, making operation simpler and more convenient, and can specifically adjust different positions of the sheath to meet the needs of complex human physiological structures.
Smart Images
Figure CN224166705U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a vascular guide sheath for interventional surgery. Background Technology
[0002] A vascular guide sheath is an instrument used in neurosurgical and cardiovascular procedures. Its main function is to guide guidewires, catheters, or other medical devices into blood vessels / heart chambers for surgical treatment. Currently, existing vascular guide sheaths, when guiding guidewires or other medical devices, can only bend the entire sheath during the bending process, resulting in insufficient bending precision. Utility Model Content
[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a vascular guidance sheath for interventional surgery, comprising:
[0004] The sheath, from its proximal end to its distal end, comprises an operating segment, a main body segment, and an intervention segment connected sequentially.
[0005] A first operating component is movably disposed at the proximal end of the operating segment for controlling the bending of the main body segment;
[0006] A second operating component, which is movably fitted onto the operating segment, is used to control the bending of the intervention segment.
[0007] Preferably, the diameter of the intervention segment to the main body segment is configured to gradually increase.
[0008] Preferably, the sheath is further provided with a first control hole extending axially, the first control hole being disposed on the wall, inner surface or outer surface of the operating section and the main body section.
[0009] Preferably, the first operating component includes:
[0010] A first operating element is threadedly connected to the proximal end of the sheath.
[0011] The first adjusting wire passes through the first control hole, with one end of the first adjusting wire wound and connected to the first operating member, and the other end connected to the main body segment.
[0012] Preferably, the first operating member has a first mating cavity on the side facing the operating section, the first mating cavity has a first internal thread, and the proximal end of the operating section has a first external thread, the first internal thread and the first external thread being threadedly engaged.
[0013] Preferably, the sheath is further provided with a second control hole extending axially, the second control hole being disposed on the wall, inner surface or outer surface of the operating section, the main body section and the intervention section.
[0014] Preferably, the second operating component includes:
[0015] The second operating element is threadedly connected to the circumferential surface of the sheath.
[0016] The second adjusting wire passes through the second control hole, with one end of the second adjusting wire wound and connected to the second operating member, and the other end connected to the intervention section.
[0017] Preferably, the operating section has a mating protrusion on its circumferential surface, and the proximal end of the second control hole extends to the mating protrusion.
[0018] Preferably, the mating protrusion has a second external thread, and the second operating member has a second mating cavity on the side facing the mating protrusion. The second mating cavity has a second internal thread, and the second internal thread is threadedly engaged with the second external thread.
[0019] Preferably, the operating section is further provided with a suture portion, which is located on the outside of the operating section and protrudes in the radial direction of the operating section.
[0020] The above-described solution of this utility model has at least the following beneficial effects:
[0021] The vascular guide sheath for interventional surgery provided by this utility model can be adjusted and bent by the main body segment through the first operating component and by the intervention segment through the second operating component. Thus, during the bending process, the sheath can be bent in a targeted manner at different positions, resulting in higher bending accuracy and simple and convenient operation.
[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0024] Figure 1This is a schematic diagram of the structure of a vascular guidance sheath for interventional surgery provided in an embodiment of this utility model;
[0025] Figure 2 This is a cross-sectional view of a vascular guide sheath for interventional surgery provided in an embodiment of this utility model;
[0026] Figure 3 yes Figure 2 The enlarged view of part A shown;
[0027] Explanation of icon numbers:
[0028] 10. Sheath; 101. Intervention section; 102. Main body section; 103. First external thread; 104. Second external thread; 105. Suture section; 106. Operating section; 107. First control hole; 108. Second control hole; 109. Mating protrusion; 20. First operating assembly; 21. First operating element; 211. First mating cavity; 212. First internal thread; 22. First adjusting screw; 30. Second operating assembly; 31. Second operating element; 311. Second mating cavity; 32. Second adjusting screw.
[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0035] In this utility model, unless otherwise explicitly specified and limited, "proximal end" or "proximal side" refers to the end that is relatively far away from the patient and close to the operator; "distal end" or "distal side" refers to the end that is relatively close to the patient and far away from the operator.
[0036] The following describes in detail, with reference to the accompanying drawings, one or more embodiments of the vascular guide sheath for interventional surgery according to the present invention.
[0037] Reference Figures 1 to 3 As shown, the vascular guidance sheath for interventional surgery provided in this embodiment includes: a sheath 10, a first operating component 20, and a second operating component 30. The sheath 10 includes an operating segment 106, a main body segment 102, and an interventional segment 101 connected sequentially from the proximal end to the distal end. The first operating component 20 is movably disposed at the proximal end of the operating segment 106 for controlling the bending of the main body segment 102. The second operating component 30 is movably sleeved on the operating segment 106 for controlling the bending of the interventional segment 101.
[0038] The vascular guidance sheath for interventional surgery provided by this utility model can adjust and bend the main body segment 102 through the first operating component 20 and the intervention segment 101 through the second operating component 30. Thus, during the bending process, the sheath 10 can be bent in a targeted manner at different positions, resulting in higher bending accuracy and simple and convenient operation.
[0039] Specifically, the operating segment 106 is located at the proximal end of the sheath 10. During surgery, at least the proximal end of the operating segment 106 is outside the patient's body. The operator operates the first operating component 20 and the second operating component 30 located on the operating segment 106. The interventional segment 101 is located at the distal end of the sheath 10 and is used to fine-tune the extension direction of medical devices such as guidewires inserted in the interventional segment 101. The main body segment 102 is located between the interventional segment 101 and the operating segment 106 and is used to adjust the overall extension direction of medical devices such as guidewires. The length of the interventional segment 101 is generally 1.5–2.5 mm, and the axial length ratio of the interventional segment 101 to the main body segment 102 is 1:1.5–1.5:1.8. Because the interventional segment needs to enter the human body and face various complex physiological structures, while the main body segment 102 mainly plays a supporting role, the bending stiffness of the interventional segment is less than that of the main body segment 102. This allows for better adjustment of the degree of bending at different positions of the sheath 10, resulting in more accurate bending adjustments. Preferably, the diameter of the intervention segment 101 to the main body segment 102 is configured to gradually increase. Preferably, the surface of the intervention segment 101 may be provided with a hydrophilic coating to reduce the friction between human tissue and the sheath 10. Preferably, the intervention segment 101 and the main body segment 102 are integrally formed.
[0040] Reference Figure 3 As shown, the sheath 10 also has a first control hole 107 extending axially. The first control hole 107 is disposed on the wall, inner surface, or outer surface of the operating section 106 and the main body section 102. In other embodiments, the first control hole 107 may also extend in a spiral shape. The first operating component 20 includes: a first operating member 21 and a first adjusting wire 22. The first operating member 21 is threadedly connected to the proximal end of the operating section 106; the first adjusting wire 22 passes through the first control hole 107, and one end of the first adjusting wire 22 is wound and connected to the first operating member 21, and the other end is connected to the main body section 102. Specifically, the first operating member 21 has a first mating cavity 211 on the side facing the operating section 106. The first mating cavity 211 has a first internal thread 212, and the proximal end of the operating section 106 has a first external thread 103. The first internal thread 212 and the first external thread 103 are threadedly engaged, thereby realizing the threaded connection between the first operating member 21 and the operating section 106. The proximal end of the first adjusting wire 22 is wound and connected to the bottom of the first mating cavity 211, so that when the first operating member 21 moves axially, the first adjusting wire 22 can be driven to move axially.
[0041] In this embodiment, the main body segment 102 can be made of an elastic material, allowing it to bend freely and return to a straight state under its own elastic force. When the first operating member 21 is rotated, it can move away from or towards the sheath tube 10. When the first operating member 21 moves away from the sheath tube 10, it can pull the first adjusting wire 22 to bend the main body segment 102. When the first operating member 21 moves towards the sheath tube 10, the main body segment 102 can return to its straight state under its own elastic force. By adjusting the main body segment 102, the degree of bending of the main body segment 102 can be accurately controlled, resulting in more precise adjustment. In this embodiment, there is one first adjusting wire 22. In other embodiments, there can be multiple first adjusting wires 22, evenly arranged circumferentially.
[0042] Continue reading Figure 3 In this embodiment, the sheath 10 is further provided with a second control hole 108 extending axially. The second control hole 108 is disposed on the wall, inner surface, or outer surface of the operating section 106, the main body section 102, and the intervention section 101. The second operating component 30 includes a second operating member 31 and a second adjusting wire 32. The second operating member 31 is threadedly connected to the circumferential surface of the operating section 106. The second adjusting wire 32 passes through the second control hole 108, and one end of the second adjusting wire 32 is wound and connected to the second operating member 31, while the other end is connected to the intervention section 101. Specifically, a mating protrusion 109 is provided on the circumferential surface of the operating section 106, and the proximal end of the second control hole 108 extends to the mating protrusion 109. The mating protrusion 109 has a second external thread 104. The second operating member 31 has a second mating cavity 311 on the side facing the mating protrusion 109. The second mating cavity 311 has a second internal thread, which is threadedly engaged with the second external thread 104, thereby realizing the threaded connection between the second operating member 31 and the second threaded part 104.
[0043] In this embodiment, when the second operating member 31 is rotated, the second operating member 31 can move away from or towards the sheath tube 10. When the second operating member 31 moves away from the sheath tube 10, it can pull the second adjusting wire 32 to bend the intervention segment 101. When the second operating member 31 moves towards the sheath tube 10, the intervention segment 101 can recover under its own elastic force, thereby accurately controlling the degree of bending of the intervention segment 101. It is understood that the first adjusting wire 22 and the second adjusting wire 32 are made of flexible materials, such as carbon fiber wire, so that the first adjusting wire 22 and the second adjusting wire 32 have higher tensile strength and better tensile stability during bending.
[0044] Reference Figure 1As shown, the proximal end of the operating segment 106 is also provided with a suture portion 105, which is located on the outer side of the operating segment 106 and protrudes in the radial direction of the operating segment 106. The suture portion 105 may have holes, allowing for suturing and fixation at locations such as the skin, ensuring more stable and reliable fixation of the guide sheath during interventional surgery. Furthermore, the suture portion 105 is located distal to the mating protrusion 109.
[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A vascular guidance sheath for interventional surgery, characterized in that, include: The sheath, from its proximal end to its distal end, comprises an operating segment, a main body segment, and an intervention segment connected sequentially. A first operating component is movably disposed at the proximal end of the operating segment for controlling the bending of the main body segment; A second operating component, which is movably fitted onto the operating segment, is used to control the bending of the intervention segment.
2. The vascular guidance sheath for interventional surgery according to claim 1, characterized in that, The diameter of the intervention segment to the main segment is configured to gradually increase.
3. The vascular guidance sheath for interventional surgery according to claim 1, characterized in that, The sheath is also provided with a first control hole extending axially, which is located on the wall, inner surface, or outer surface of the operating section and the main body section.
4. The vascular guidance sheath for interventional surgery according to claim 3, characterized in that, The first operating component includes: A first operating element is threadedly connected to the proximal end of the sheath. The first adjusting wire passes through the first control hole, with one end of the first adjusting wire wound and connected to the first operating member, and the other end connected to the main body segment.
5. The vascular guidance sheath for interventional surgery according to claim 4, characterized in that, The first operating member has a first mating cavity on the side facing the operating section, the first mating cavity has a first internal thread, and the proximal end of the operating section has a first external thread, the first internal thread and the first external thread are threadedly mated.
6. The vascular guidance sheath for interventional surgery according to claim 4, characterized in that, The sheath also has a second control hole extending axially, which is located on the wall, inner surface, or outer surface of the operating section, the main body section, and the intervention section.
7. The vascular guidance sheath for interventional surgery according to claim 6, characterized in that, The second operating component includes: The second operating element is threadedly connected to the circumferential surface of the sheath. The second adjusting wire passes through the second control hole, with one end of the second adjusting wire wound and connected to the second operating member, and the other end connected to the intervention section.
8. The vascular guidance sheath for interventional surgery according to claim 6, characterized in that, The operating section has a mating protrusion on its circumferential surface, and the proximal end of the second control hole extends to the mating protrusion.
9. The vascular guidance sheath for interventional surgery according to claim 8, characterized in that, The mating protrusion has a second external thread, and the second operating member has a second mating cavity on the side facing the mating protrusion. The second mating cavity has a second internal thread, and the second internal thread is threadedly engaged with the second external thread.
10. The vascular guidance sheath for interventional surgery according to claim 1, characterized in that, The operating section is further provided with a suture portion, which is located on the outside of the operating section and protrudes in the radial direction of the operating section.