Calculus removing mesh basket
By designing a detachable and connected stone-taking net basket, the replacement problem caused by the fixed diameter of the net basket in the prior art is solved, and the rapid replacement of the net basket is achieved according to the size of the stone, saving surgical time and cost.
Patent Information
- Application Number
- CN202420230251.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The existing stone-taking net basket has a fixed diameter and expansion amplitude, which cannot accommodate bile duct stones of different sizes, resulting in the need to replace the overall net basket when encountering larger stones, extending the operation time and causing waste of equipment.
A stone net basket including a net basket, a first connector, a second connector, an outer tube and an operating part is designed. Through the detachable connector and cable structure, the diameter of the net basket is allowed to be adjusted as needed to avoid Replace the overall net basket.
It realizes rapid replacement of net baskets according to the size of stones, saving time and cost of surgery, while simplifying the structure and avoiding waste of equipment.
Smart Images
Figure CN222130214U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a stone removal net basket. Background Art
[0002] With the development of ERCP technology (endoscopic retrograde pancreatocholangiopancreatography) and the continuous updating of endoscopic accessories, patients with bile duct stones can now basically be effectively treated through ERCP. However, during the process of bile duct stone removal by ERCP, the number and size of stones are generally not fixed, and the diameter of the existing stone removal basket is basically fixed, and the expansion amplitude is also fixed. When the basket is pushed out, it will automatically expand to form a basket that can be used to pick up stones, and the basket diameter cannot be adjusted. Therefore, when a larger stone appears and the basket diameter is small and the stone removal operation cannot be performed, it is necessary to withdraw the stone removal basket that has entered the endoscope and replace it with another stone removal basket (because the basket at the far end of the traditional stone removal basket is directly fixedly connected to the cable, the basket of the appropriate size can only be replaced by replacing the entire stone removal basket), which will undoubtedly prolong the operation time and cause waste of stone removal basket instruments. Utility Model Content
[0003] The utility model discloses a stone removal basket which solves the problem that when a larger stone appears and the basket has a smaller diameter and cannot be used for stone removal, the stone removal basket that has entered the endoscope needs to be withdrawn and replaced with another stone removal basket, which prolongs the operation time and causes waste of the stone removal basket instrument. There is no need to replace the entire stone removal basket instrument, only the appropriate basket needs to be replaced according to the size of the stone. This is convenient and quick, effectively saves operation time, has a simple structure, and is easy to implement.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is specifically implemented as follows:
[0005] The utility model discloses a stone-removing net basket, comprising a net basket, a first connecting piece, a second connecting piece, an outer tube, a cable and an operating part, wherein the net basket is fixedly connected to the first connecting piece, the proximal end of the outer tube is connected to the operating part and extends axially from the proximal end to the distal end, the cable is passed through the outer tube, the proximal end of the cable is fixedly connected to the operating part, the distal end of the cable is fixedly connected to the second connecting piece, the first connecting piece and the second connecting piece are detachably connected, and the operating part controls the movement of the net basket.
[0006] Furthermore, the first connecting member is in the shape of a hollow cylinder and is provided with limiting grooves symmetrical along its longitudinal axis.
[0007] Furthermore, the second connecting member includes an installation portion and a clamping portion, the installation portion is fixedly connected to the cable, the clamping portion includes a first elastic arm and a second elastic arm, the ends of the first elastic arm and the second elastic arm are both formed with a barb structure, the barb structure is adapted to the limiting groove, when the barb structure is embedded in the limiting groove, the connection between the first connecting member and the second connecting member is completed, and when the barb structure exits the limiting groove, the separation between the first connecting member and the second connecting member is completed.
[0008] Furthermore, the operating part includes a core rod and a handle, the core rod extends axially from the proximal end to the distal end, the handle is arranged on the core rod, and the handle slides back and forth along the core rod to make the basket extend from the outer tube or be accommodated.
[0009] Furthermore, the operating part also includes a sheath tube, which is arranged at the proximal end of the outer tube and connected to the core rod through a third connecting member.
[0010] Beneficial technical effects:
[0011] 1. The stone-removing basket disclosed in the utility model comprises a basket, a first connecting piece, a second connecting piece, an outer tube, a cable and an operating part, wherein the basket is fixedly connected to the first connecting piece, the cable is inserted into the outer tube, the proximal end of the cable is fixedly connected to the operating part, and the distal end of the cable is fixedly connected to the second connecting piece, and the first connecting piece and the second connecting piece are detachably connected, that is, the basket is separated from other structures, and the problem that when a large stone appears and the diameter of the basket is small and the stone-removing operation cannot be performed, the stone-removing basket that has entered the endoscope needs to be withdrawn and replaced with another stone-removing basket, which prolongs the operation time and causes waste of the stone-removing basket instrument. There is no need to replace the overall stone-removing basket instrument, and only the appropriate basket needs to be replaced according to the size of the stone, which is convenient and fast, effectively saves the operation time, and at the same time, effectively saves the cost;
[0012] 2. In the utility model, the first connecting member is a hollow cylindrical shape, and a limiting groove symmetrical along its longitudinal axis is formed on it. The second connecting member includes a mounting portion and a clamping portion. The mounting portion is fixedly connected to the cable, and the clamping portion includes a first elastic arm and a second elastic arm. The ends of the first elastic arm and the second elastic arm are both formed with a barb structure, and the barb structure is adapted to the limiting groove. When the barb structure is embedded in the limiting groove, the connection between the first connecting member and the second connecting member is completed. When the barb structure withdraws from the limiting groove, the separation between the first connecting member and the second connecting member is completed. The detachable structure composed of the first connecting member and the second connecting member is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solution of the present utility model, the drawings required for describing the embodiments are briefly introduced below.
[0014] Figure 1 This is a schematic diagram of the overall structure of a stone-collecting net basket described in the utility model;
[0015] Figure 2 for Figure 1 The enlarged structure diagram of part A in the middle;
[0016] Figure 3 It is a structural schematic diagram of a first connecting member in a stone-taking net basket according to the utility model;
[0017] Figure 4 This is a structural schematic diagram of a second connecting member in a stone-removing net basket according to the utility model;
[0018] Figure 5 It is a front view of a first connecting piece and a second connecting piece of a stone removing net basket described in the utility model when they are engaged.
[0019] Among them, 1-basket, 2-first connecting piece, 21-limiting groove, 3-second connecting piece, 31-installing part, 32-clamping part, 321-first elastic arm, 322-second elastic arm, 323-barb structure, 4-outer tube, 5-pull rope, 6-operating part, 61-core rod, 62-handle, 63-sheath tube, 64-third connecting piece. DETAILED DESCRIPTION
[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0023] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0026] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0027] Firstly, it should be noted that the terms "proximal" and "distal" used in this article refer to directions closer to and farther from a user of the device, respectively.
[0028] In order to solve the problem that when larger stones appear during bile duct lithotripsy and the basket has a smaller diameter and cannot be used for stone removal, the stone removal basket that has entered the endoscope needs to be withdrawn and replaced with another stone removal basket (since the existing stone removal baskets are all fixedly connected with cables, the stone removal basket with the entire structure needs to be replaced in order to replace the basket), the utility model discloses a stone removal basket.
[0029] The utility model discloses a stone-taking net basket, see Figure 1-Figure 2 , specifically includes a net basket 1, a first connecting member 2, a second connecting member 3, an outer tube 4, a cable 5 and an operating part 6, the net basket 1 is fixedly connected to the first connecting member 2, preferably, the net basket 1 is welded and fixed to the first connecting member 2, the proximal end of the outer tube 4 is connected to the operating part 6, and extends axially from the proximal end to the distal end, the cable 5 is passed through the outer tube 4, the proximal end of the cable 5 is fixedly connected to the operating part 6, and the distal end of the cable 5 is fixedly connected to the second connecting member 3, preferably, the cable 5 is welded and fixed to the second connecting member 3, the first connecting member 2 and the second connecting member 3 are detachably connected, the operating part 6 controls the movement of the net basket 1, and the detachable connection between the first connecting member 2 and the second connecting member 3 makes the net basket 1 and other structures discrete, so it is only necessary to replace the appropriate net basket according to the size of the stone without replacing the overall structure, which is convenient and fast, effectively saves operation time, and at the same time, effectively saves cost.
[0030] As an embodiment of the present invention, the first connecting member 2 is a hollow cylindrical shape, and the hollow channel is for the second connecting member 3 to be inserted, and a limiting groove 21 symmetrical along its longitudinal axis is opened on it, see Figure 3 The second connecting member 3 includes a mounting portion 31 and a clamping portion 32, see Figure 4 Preferably, the mounting portion 31 is fixedly connected to the cable 5, that is, the distal end of the cable 5 is fixedly connected to the mounting portion 31 by welding, and the clamping portion 32 includes a first elastic arm 321 and a second elastic arm 322, the first elastic arm 321 and the second elastic arm 322 extend toward the distal end along the axial direction of the second connecting member 3, and the ends of the first elastic arm 321 and the second elastic arm 322 are both formed with a barb structure 323, and the barb structure 323 is adapted to the limiting groove 21. When the barb structure 323 is embedded in the limiting groove 21, the connection between the first connecting member 2 and the second connecting member 3 is completed, see Figure 5 When the barb structure 323 exits the limiting groove 21, the separation of the first connecting member 2 and the second connecting member 3 is completed.
[0031] As an embodiment of the present utility model, the operating part 6 includes a core rod 61 and a handle 62, the core rod 61 extends axially from the proximal end to the distal end, the handle 62 is arranged on the core rod 61, and the handle 62 slides back and forth along the core rod 61 to make the net basket 1 extend out of the outer tube 4 or be accommodated; the operating part 6 also includes a sheath tube 63, the sheath tube 63 is arranged at the proximal end of the outer tube 4, and is connected to the core rod 61 through a third connecting member 64. It can be understood that there is no restriction on the structure of the operating part 6 here, as long as it can realize the mechanism of controlling the extension and retraction of the net basket 1.
[0032] The utility model discloses a detachable net basket for stone removal, wherein the net basket 1 is fixedly connected to the first connecting member 2, the proximal end of the cable 5 is fixedly connected to the operating portion 6, the distal end of the cable 5 is fixedly connected to the second connecting member 3, and the first connecting member 2 and the second connecting member 3 are detachably connected, so that the net basket 1 and other structures are detachable. Therefore, when a larger stone appears and the net basket has a smaller diameter and cannot be used for stone removal, the net basket with a suitable diameter can be directly replaced. The specific operation process of replacing the net basket is as follows:
[0033] It should be noted that when the stone-removing basket disclosed in the present invention is manufactured in a factory, it is an operating part 6 with a plurality of baskets of different diameters (such as a spiral stone-removing basket, a lamp stone-removing basket and a headless stone-removing basket, etc.).
[0034] When performing a stone removal operation, the operator uses the endoscope lens to determine the size of the stone, and assembles a net basket of appropriate diameter according to the size of the stone to perform the stone removal operation. If the diameter of the net basket currently assembled on the operating part is appropriate, the stone removal operation can be performed directly; if the stone removal net basket is not currently assembled on the operating part, a net basket of appropriate diameter is selected (net basket and first connecting member) so that the limiting groove 21 on the first connecting member 2 is aligned with the barb structure 323 of the second connecting member 3, and the first connecting member 2 is pulled proximally until the barb structure 323 on the second connecting member 3 is embedded in the limiting groove 21 on the first connecting member 2, and the assembly of the appropriate net basket is completed; if If the diameter of the currently assembled net basket is not suitable, push the handle 62 to the distal end so that the net basket is in an extended state. At this time, the first connecting member 2 and the second connecting member 3 are in a clamping state (that is, the barb structure 323 is clamped in the limiting groove 21). Pinch the two barb structures 323 on the second connecting member 3 to make the two barb structures 323 move toward each other and withdraw the barb structures 323 from the limiting groove 21. Then, the net basket you want to replace (the net basket and the first connecting member 2 are fixedly connected) can be removed, and then a suitable net basket 1 (net basket 1 and the first connecting member 2) is selected to be clamped with the second connecting member 3. This completes the assembly of the newly selected net basket and the stone removal operation can continue.
[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0036] The above embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.
Claims
1. A stone-removing basket, characterized in that: The invention comprises a net basket (1), a first connecting member (2), a second connecting member (3), an outer tube (4), a cable (5) and an operating part (6), wherein the net basket (1) is fixedly connected to the first connecting member (2), the proximal end of the outer tube (4) is connected to the operating part (6) and extends axially from the proximal end to the distal end, the cable (5) is passed through the outer tube (4), the proximal end of the cable (5) is fixedly connected to the operating part (6), the distal end of the cable (5) is fixedly connected to the second connecting member (3), the first connecting member (2) and the second connecting member (3) are detachably connected, and the operating part (6) controls the movement of the net basket (1).
2. The stone-removing basket according to claim 1, characterized in that: The first connecting member (2) is in the shape of a hollow cylinder and is provided with a limiting groove (21) symmetrical along its longitudinal axis.
3. The stone-removing basket according to claim 2, characterized in that: The second connecting member (3) comprises a mounting portion (31) and a clamping portion (32), wherein the mounting portion (31) is fixedly connected to the cable (5), and the clamping portion (32) comprises a first elastic arm (321) and a second elastic arm (322), and the ends of the first elastic arm (321) and the second elastic arm (322) are both formed with a barb structure (323), and the barb structure (323) is adapted to the limiting groove (21). When the barb structure (323) is embedded in the limiting groove (21), the connection between the first connecting member (2) and the second connecting member (3) is completed, and when the barb structure (323) exits the limiting groove (21), the separation between the first connecting member (2) and the second connecting member (3) is completed.
4. The stone-removing basket according to claim 1, characterized in that: The operating portion (6) comprises a core rod (61) and a handle (62), wherein the core rod (61) extends axially from the proximal end to the distal end, and the handle (62) is arranged on the core rod (61), and the handle (62) slides forward and backward along the core rod (61) to make the net basket (1) extend out of the outer tube (4) or be accommodated therein.
5. The stone-removing basket according to claim 4, characterized in that: The operating part (6) further comprises a sheath tube (63), which is arranged at the proximal end of the outer tube (4) and connected to the core rod (61) via a third connecting member (64).