Bending-adjustable sheathing canal
By designing a bend control knob, slider and traction structure with adjustable bend sheath tubes, the problem that the existing sheath tubes cannot adapt to different individual anatomical structures is solved, flexible control of bending angles and convenient operation, and reduced hospital storage costs.
Patent Information
- Application Number
- CN202421226103.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing sheath can not perfectly adapt to the anatomical structure of different individuals during interventional minimally invasive surgery, resulting in the need to replace sheaths of different shapes during the surgery, which increases hospital costs, and the operating handle of the adjustable bent sheath can be complex and inconvenient to operate.
An adjustable bent sheath tube is designed to control the bending angle of the distal end of the tube body through the coordination of the bend knob, slider and traction member, adapt to the anatomical structure of different individuals, and simplify the operating handle structure and improve operation convenience.
It realizes flexible control of the distal bending angle of the sheath tube, adapts to the anatomical structure of different individuals, reduces the cost of hospital storage, simplifies the operating handle structure, and improves the convenience of operation.
Smart Images
Figure CN222899971U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to an adjustable curved sheath tube. Background Art
[0002] In interventional minimally invasive surgery, it is usually necessary to use an interventional diagnostic sheath to establish a channel between the lesion site in the patient's body and the external operating end, so as to introduce various diagnostic and therapeutic instruments, drugs or implanted instruments to the lesion site of the patient, or to extract body fluids from the lesion site, so as to avoid the need for surgical operations to reach the lesion site. The sheath generally includes a tube body and a handle. The tube body is relatively long and has an inner cavity used as a channel. The tube body has a distal end and a proximal end. The distal end can easily enter the human body lumen (such as a blood vessel), and the proximal end is used to connect the handle for the operator to operate.
[0003] In the related art, the distal end of the sheath needs to be pre-molded into different curved shapes to adapt it to the anatomical morphology of a specific lesion, so as to facilitate the alignment of the distal end of the sheath with the lesion in the human body. However, the labor-saving anatomical structures of different individuals are different, and the pre-molded sheath cannot perfectly adapt to all individualized physiological and anatomical structures. It may lead to the need to replace sheaths of different shapes during surgery. Therefore, hospitals are generally required to prepare sheaths of all shapes and angles, which increases hospital costs. Although there are some adjustable sheaths on the market, the operating handles of such sheaths are often complex in structure and inconvenient to operate. Summary of the invention
[0004] Based on this, it is necessary to provide an adjustable bending sheath tube to address the above problems. The adjustable bending sheath tube structure can control the bending angle of the distal end of the sheath tube, and has a simple structure and is easy to operate.
[0005] An adjustable curved sheath tube, comprising:
[0006] Operating handle;
[0007] A tube body, the proximal end of which is inserted into the operating handle, and the distal end of which is a free end;
[0008] A slider, the slider being movably disposed in the operating handle;
[0009] A bending control knob, the bending control knob is rotatably connected to the operating handle, and the bending control knob is connected to a slider, and the bending control knob can drive the slider to move along the axial direction of the tube body;
[0010] A traction member is inserted into the tube wall of the tube body, one end of the traction member is connected to the distal end of the tube body, and the other end is connected to the slider.
[0011] The technical solution is further described below:
[0012] In one embodiment, the adjustable bending sheath tube further includes a connector, which is connected to the proximal end of the operating handle and communicates with the proximal end of the tube body.
[0013] In one embodiment, the operating handle includes
[0014] A guide member, wherein the guide member is sleeved outside the tube body, and a slide groove is provided on the outer wall of the guide member, wherein the extending direction of the slide groove is parallel to the axial direction of the tube body, and the slider is movably arranged in the slide groove;
[0015] A shell is sleeved outside the guide member and covers the slide groove.
[0016] In one embodiment, the bending control knob is rotatably mounted on the guide member, and the bending control knob includes an axially connected operating portion and a matching portion, wherein the matching portion is passed between the guide member and the outer shell, an inner wall of the matching portion is provided with an internal thread, the slider is provided with an external thread matching with the internal thread, and the operating portion is located outside the outer shell.
[0017] In one of the embodiments, a shoulder portion is formed between the mating portion and the operating portion, the shoulder portion is in contact with the proximal end face of the shell, and one of the shoulder portion and the proximal end face of the shell is provided with a groove, and the other is provided with a protrusion, and when the bending control knob is rotated to a preset phase, the protrusion is embedded in the groove.
[0018] In one of the embodiments, the inner wall of the shell is provided with a limiting rib, and the limiting rib cooperates with the guide member to limit the circumferential rotation of the guide member.
[0019] In one of the embodiments, at least a portion of the outer wall of the guide member is a prism structure, the limiting rib is provided with a limiting groove matching the prism structure, and the prism structure is embedded in the limiting groove.
[0020] In one embodiment, there are multiple limiting ribs, and the multiple limiting ribs are arranged in the inner wall of the shell at intervals along the axial direction of the tube body.
[0021] In one embodiment, the outer shell includes a first shell and a second shell connected radially, a first splicing seam is formed between the first shell and the second shell, the guide member includes a first part and a second part connected radially, a second splicing seam is formed between the first part and the second part, and in the circumferential direction of the tube body, the first splicing seam and the second splicing seam are staggered.
[0022] In one embodiment, the tube body includes an inner layer, a middle layer and an outer layer which are sequentially sleeved from the inside to the outside, and the traction member is inserted through the middle layer.
[0023] In the above-mentioned adjustable bending sheath, by rotating the bending control knob clockwise or counterclockwise, the slider can be driven to move forward or backward along the axis of the tube body, thereby tightening or loosening the traction member, and then controlling the bending angle of the distal end of the tube body. Compared with the traditional pre-shaped sheath, the adjustable bending sheath of the present application can control the bending angle of the distal end of the tube body through the cooperation of the bending control knob, the slider and the traction member, so as to adapt to the anatomical morphology of the lesion site of different individuals, thereby improving the adaptability of the adjustable bending sheath. At the same time, the slider is arranged inside the operating handle, and the bending control knob rotates with the operating handle, so that the outer wall of the control handle has no redundant structure, which is convenient for the operator to hold, simplifies the structure of the control handle, and is more convenient for surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0026] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.
[0027] Figure 1 The figure is a schematic diagram of the structure of an adjustable bending sheath tube according to an embodiment.
[0028] Figure 2 for Figure 1 The structural explosion diagram of the operating handle of the adjustable bending sheath tube is shown in FIG.
[0029] Figure 3 for Figure 1 Schematic diagram of the structure of the adjustable bending sheath tube hidden behind the first shell.
[0030] Figure 4 for Figure 1 Schematic diagram of the structure of the adjustable bending sheath tube hidden behind the shell.
[0031] Figure 5 A schematic diagram of a cross section of a tube body according to an embodiment.
[0032] Description of reference numerals:
[0033] 10. Tube body; 11. Inner layer; 12. Middle layer; 13. Outer layer; 20. Operating handle; 21. Outer shell; 211. First shell; 212. Second shell; 213. First joint seam; 214. Limiting rib; 22. Guide member; 221. First part; 222. Second part; 223. Second joint seam; 224. Slide groove; 225. Prismatic structure; 30. Bending control knob; 31. Fitting part; 32. Operating part; 33. Shoulder part; 40. Slider; 50. Connector; 60. Traction member. DETAILED DESCRIPTION
[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0035] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0037] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0038] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.
[0040] It should be noted that in the embodiments, the "distal end" refers to the end away from the operator, and the "proximal end" refers to the end close to the operator.
[0041] An embodiment of the present application provides an adjustable bending sheath tube. Figures 1 to 5 The adjustable bending sheath tube of one embodiment includes an operating handle 20, a tube body 10, a bending control knob 30, a slider 40 and a traction member 60. The proximal end of the tube body 10 is inserted into the operating handle 20, and the distal end of the tube body 10 is a free end. The slider 40 is movably arranged in the operating handle 20. The bending control knob 30 is rotatably connected to the operating handle 20, and the bending control knob 30 is connected to the slider 40, and the bending control knob 30 can drive the slider 40 to move along the axial direction of the tube body 10; the traction member 60 is inserted into the tube wall of the tube body 10, and one end of the traction member 60 is connected to the distal end of the tube body 10, and the other end is connected to the slider 40.
[0042] In the above-mentioned adjustable bending sheath tube, by rotating the bending control knob 30 clockwise or counterclockwise, the slider 40 can be driven to move forward or backward along the axis of the tube body 10, thereby tightening or loosening the traction member 60, and then controlling the bending angle of the distal end of the tube body 10. Compared with the traditional pre-shaped sheath tube, the adjustable bending sheath tube of the present application can control the bending angle of the distal end of the tube body 10 through the cooperation of the bending control knob 30, the slider 40 and the traction member 60, so as to adapt to the anatomical morphology of the lesion site of different individuals, thereby improving the adaptability of the adjustable bending sheath tube. At the same time, the slider 40 is arranged inside the operating handle 20, and the bending control knob 30 rotates with the operating handle 20, so that the outer wall of the control handle has no redundant structure, which is convenient for the operator to hold, simplifies the control handle structure, and is more convenient for surgical operation.
[0043] See also Figure 2 as well as Figure 3 In one embodiment, the adjustable bend sheath tube also includes a connector 50, which is connected to the proximal end of the operating handle 20 and communicated with the proximal end of the tube body 10. Specifically, the connector 50 is used to connect to a syringe to inject drugs into the variable position or to extract body fluids from the lesion site. The connector 50 can also be used for the passage of diagnostic and therapeutic instruments so that the diagnostic and therapeutic instruments can penetrate into the lesion site. By providing the connector 50 at the proximal end of the operating handle 20 and communicating the connector 50 with the proximal end of the tube body 10, compared to the traditional Y-shaped handle, the adjustable bend sheath tube of the present application avoids providing a branch structure on the outer wall of the operating handle 20, thereby making the operating handle 20 easier for the operator to hold and operate. For further information, see Figure 2 , the connector 50 may be a T-shaped connector. In another embodiment, the connector 50 may also be a Y-shaped connector, such as a three-way valve.
[0044] See also Figure 2 as well as Figure 4 In one embodiment, the operating handle 20 includes a guide member 22 and a housing 21. The guide member 22 is sleeved outside the tube body 10, and a slide groove 224 is provided on the outer wall of the guide member 22. The extension direction of the slide groove 224 is parallel to the axial direction of the tube body 10, and the slider 40 is movably arranged in the slide groove 224. Through the limiting and guiding function of the slide groove 224, the slider 40 can be ensured to move along the axial direction of the tube body 10 under the drive of the bending control knob 30, thereby tightening or loosening the traction member 60 to control the distal bending angle of the tube body 10. The housing 21 is sleeved outside the guide member 22 and covers the slide groove 224, thereby protecting the internal guide member 22 and the slider 40, and preventing the slider 40 from falling out of the slide groove 224.
[0045] See also Figure 3Optionally, in one embodiment, the bending control knob 30 is rotatably sleeved on the guide member 22. The bending control knob 30 includes an axially connected operating portion 32 and a matching portion 31. The matching portion 31 is inserted between the guide member 22 and the housing 21 to achieve radial and axial limitation of the bending control knob 30. The inner wall of the matching portion 31 is provided with an internal thread (not shown), the slider 40 is provided with an external thread matching the internal thread, and the operating portion 32 is located outside the housing 21. In this way, the matching portion 31 can be driven to rotate by rotating the operating portion 32. Since the matching portion 31 is threadedly connected to the slider 40, and the slider 40 is circumferentially limited by the slide groove 224, the matching portion 31 can be rotated to drive the slider 40 to move axially along the slide groove 224, thereby pulling the traction line to control the bending angle of the distal end of the tube body 10.
[0046] Further, see Figure 2 A shoulder portion 33 is formed between the matching portion 31 and the operating portion 32. The shoulder portion 33 contacts and matches with the proximal end surface of the housing 21, and one of the shoulder portion 33 and the proximal end surface of the housing 21 is provided with a groove (not shown), and the other is provided with a protrusion (not shown). When the bending control knob 30 is rotated to a preset phase, the protrusion is embedded in the groove. In this way, the bending control knob 30 can be fixed to a predetermined phase, thereby locking the bending angle of the distal end of the tube body 10, so that the doctor can operate during surgery. Furthermore, a plurality of grooves are provided, and the plurality of grooves are arranged at intervals along the circumferential direction. In this way, by rotating the bending control knob 30 until the protrusion is embedded in different grooves, the distal end of the tube body 10 can be locked to different bending angles, thereby improving the adaptability of the adjustable bending sheath.
[0047] It is worth noting that in other embodiments, some concave-convex structures or friction structures may be provided between the shoulder portion 33 and the proximal end face of the outer shell 21 to increase the friction force between the shoulder portion 33 and the proximal end face of the outer shell 21, so as to ensure that the bending control knob 30 can stay at any phase after rotation, thereby locking the distal end of the tube body 10 to any bending angle, and further improving the adaptability of the adjustable bending sheath.
[0048] See also Figure 3The inner wall of the housing 21 is provided with a limiting rib 214, and the limiting rib 214 cooperates with the guide member 22 to limit the circumferential rotation of the guide member 22. Specifically, at least part of the outer wall of the guide member 22 is a prism structure 225, and the limiting rib 214 is provided with a limiting groove matching the prism structure 225, and the prism structure 225 is embedded in the limiting groove. For example, in this embodiment, the middle part of the outer wall of the guide member 22 is a quadrangular prism structure, and the limiting rib 214 is provided with a square groove. By embedding the quadrangular prism structure of the guide member 22 into the square groove, the circumferential rotation of the guide member 22 can be limited, thereby preventing the guide member 22 from rotating when the bending control knob 30 rotates. It can be understood that in other embodiments, the middle part of the outer wall of the guide member 22 can also be a triangular prism, a pentagonal pyramid or a hexagonal prism, etc., and the limiting circumferential rotation of the guide member 22 can also be limited by the limiting rib 214 and the guide member 22.
[0049] Furthermore, there are multiple limiting ribs 214, which are arranged at intervals along the axial direction of the tube body 10 in the inner wall of the shell 21. In this way, on the one hand, the circumferential rotation of the guide member 22 can be more stably limited, and on the other hand, the structural strength of the shell 21 can be enhanced.
[0050] See also Figure 1 as well as Figure 2 In one embodiment, the housing 21 includes a first housing 211 and a second housing 212 spliced in a radial direction, and the guide member 22 includes a first portion 221 and a second portion 222 spliced in a radial direction, so that the adjustable bending sheath tube is assembled from the inside to the outside in sequence, avoiding interference between components during the assembly process. Further, a first splicing seam 213 is formed between the first housing 211 and the second housing 212, and a second splicing seam 223 is formed between the first portion 221 and the second portion 222. In the circumferential direction of the tube body 10, the first splicing seam 213 and the second splicing seam 223 are staggered. For example, in one embodiment, the phase of the first splicing seam 213 is 90° different from the phase of the second splicing seam 223, thereby enhancing the structural strength of the operating handle 20. When the operating handle 20 is subjected to external force, the housing 21 and the guide member 22 are prevented from being split at the splicing seam at the same time.
[0051] See also Figure 5 In one embodiment, the tube body 10 includes an inner layer 11, a middle layer 12, and an outer layer 13 which are sequentially sleeved from the inside to the outside, and the traction member 60 is inserted into the middle layer 12, so that the traction member 60 can be hidden in the tube wall of the tube body 10 to avoid interference or entanglement with other components during the movement of the traction member 60. Furthermore, the traction member 60 can be a steel wire.
[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0053] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. An adjustable bending sheath tube, characterized in that: include: Operating handle; A tube body, the proximal end of which is inserted into the operating handle, and the distal end of which is a free end; A slider, the slider being movably disposed in the operating handle; A bending control knob, the bending control knob is rotatably connected to the operating handle, and the bending control knob is connected to a slider, and the bending control knob can drive the slider to move along the axial direction of the tube body; A traction member is inserted into the tube wall of the tube body, one end of the traction member is connected to the distal end of the tube body, and the other end is connected to the slider.
2. The adjustable bending sheath tube according to claim 1, characterized in that: The adjustable bending sheath tube also includes a connector, which is connected to the proximal end of the operating handle and communicates with the proximal end of the tube body.
3. The adjustable bending sheath tube according to claim 1, characterized in that: The operating handle comprises A guide member, wherein the guide member is sleeved outside the tube body, and a slide groove is provided on the outer wall of the guide member, wherein the extending direction of the slide groove is parallel to the axial direction of the tube body, and the slider is movably arranged in the slide groove; A shell is sleeved outside the guide member and covers the slide groove.
4. The adjustable bending sheath tube according to claim 3, characterized in that: The bending control knob is rotatably mounted on the guide member, and includes an axially connected operating portion and a matching portion, wherein the matching portion is passed between the guide member and the outer shell, an inner wall of the matching portion is provided with an internal thread, and the slider is provided with an external thread matching with the internal thread, and the operating portion is located outside the outer shell.
5. The adjustable bending sheath tube according to claim 4, characterized in that: A shoulder portion is formed between the mating portion and the operating portion, the shoulder portion is in contact with the proximal end surface of the shell, and one of the shoulder portion and the proximal end surface of the shell is provided with a groove, and the other is provided with a protrusion, and when the bending control knob is rotated to a preset phase, the protrusion is embedded in the groove.
6. The adjustable bending sheath tube according to claim 3, characterized in that: The inner wall of the shell is provided with a limiting rib, and the limiting rib cooperates with the guide member to limit the circumferential rotation of the guide member.
7. The adjustable bending sheath tube according to claim 6, characterized in that: At least part of the outer wall of the guide member is a prism structure, the limiting rib is provided with a limiting groove matching the prism structure, and the prism structure is embedded in the limiting groove.
8. The adjustable bending sheath tube according to claim 6, characterized in that: There are multiple limiting ribs, and the multiple limiting ribs are arranged in the inner wall of the shell at intervals along the axial direction of the tube body.
9. The adjustable bending sheath tube according to claim 3, characterized in that: The outer shell includes a first shell and a second shell connected radially, a first splicing seam is formed between the first shell and the second shell, the guide member includes a first part and a second part connected radially, a second splicing seam is formed between the first part and the second part, and the first splicing seam and the second splicing seam are staggered in the circumferential direction of the tube body.
10. The adjustable bending sheath tube according to any one of claims 1 to 9, characterized in that: The tube body comprises an inner layer, a middle layer and an outer layer which are sequentially sleeved from the inside to the outside, and the traction member is inserted through the middle layer.