Interchangeable stone taking and crushing mesh basket
By designing an interchangeable stone gravel net basket with removable and connected handle, sheath tube and traction wire, the problem of repeated insertion of different types of net baskets in the surgery in the prior art is solved, achieving more efficient net basket replacement and reducing the difficulty of surgery.
Patent Information
- Application Number
- CN202421905508.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The existing stone net basket needs to be repeatedly inserted into different types of net baskets during surgery, which increases the difficulty and time of the operation.
An interchangeable stone gravel net basket is designed, including a removable joint handle, metal sheath and plastic sheath, and a removable joint traction wire, allowing for easy replacement of the plastic sheath and metal sheath without withdrawing from the biliary endoscope.
Through this design, the repeated insertion and exit of the net basket during surgery is reduced, the difficulty of the operation is reduced, and to a certain extent the operation inconvenience of the operation is reduced.
Smart Images
Figure CN223009214U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of medical devices, and particularly to an interchangeable stone extraction and lithotripsy basket. Background Art
[0002] The lithotripsy basket is mainly a common medical device used to crush stones in the biliary tract, and the stone extraction basket is mainly a common medical device used to extract the crushed stones out of the body. The above two types of baskets usually consist of components such as traction wires, sheaths, and handles. During use, a basket is formed at the front end of the traction wire to enclose the stone, and the basket is retracted into the sheath using the handle, and the stone is crushed and taken out of the body through the inner cavity of the sheath.
[0003] Currently, the sheaths of stone extraction baskets are mostly made of plastic, and the sheaths of lithotripsy baskets are mostly made of metal. During use, the corresponding basket is selected according to the size and hardness of the stone. However, both types of baskets have their advantages and disadvantages. The plastic sheath is soft and easy to enter the biliary tract but cannot crush stones; although the metal sheath can crush stones, it is difficult to enter the biliary tract because of its hard material. If a harder or larger stone is encountered during the operation, a stone basket with a metal sheath needs to be used first to enter the bile duct along with the endoscope to crush the stone. Because the lithotripsy basket with a metal sheath is hard and difficult to enter the biliary tract, after lithotripsy, a stone extraction basket with a plastic sheath needs to be replaced to enter the bile duct to extract the stone. Thus, there are problems such as repeatedly inserting different types of baskets, increasing the difficulty of the operation, and prolonging the operation time. Summary of the Utility Model
[0004] The main purpose of this application is to provide an interchangeable stone extraction and lithotripsy basket, aiming to solve the above technical problems.
[0005] The technical solution adopted in this application is as follows:
[0006] An interchangeable stone extraction and lithotripsy basket includes a handle, a metal sheath, a plastic sheath, and a traction wire. Both the metal sheath and the plastic sheath are detachably connected to the handle. A finger sleeve is slidably arranged on the handle, and the traction wire passes through the metal sheath or the plastic sheath and is detachably connected to the finger sleeve.
[0007] Optionally, the handle is provided with a connecting portion, a clamping pin hole is arranged along the axial direction perpendicular to the handle on the connecting portion, and spring pins are arranged on the outer walls of both the plastic sheath and the metal sheath. The spring pins can be clamped with the clamping pin hole when the plastic sheath or the metal sheath is inserted into the connecting portion.
[0008] Optionally, the finger cot includes a sliding seat slidably connected to the handle, finger rings disposed on both sides of the sliding seat, and a connecting portion integrally formed between the sliding seat and the finger rings. A flat groove is provided on the side of the sliding seat facing the traction wire. The ends of the traction wire are combined to form an insertion piece, which is inserted into the flat groove, and a locking member for locking the insertion piece in the flat groove is provided on the connecting portion.
[0009] Optionally, the locking member includes a paddle that slides along the axial direction perpendicular to the handle. A pin is provided on the paddle communicating with the flat groove side. A spring is sleeved on the pin, and a jack for inserting the pin is provided on the insertion piece.
[0010] Optionally, a hypodermic needle adapter is provided on the plastic sheath or the metal sheath.
[0011] Compared with the prior art, the beneficial effects of the present application are as follows:
[0012] A replaceable stone extraction and lithotripsy basket proposed in an embodiment of the present application, by detachably connecting a plastic sheath, a metal sheath, and a traction wire to a handle, after the plastic sheath enters the biliary tract along with the endoscope, if it is necessary to replace it with a metal sheath, only need to separate the plastic sheath from the handle, then separate the traction wire from the handle, remove the plastic sheath from the traction wire, then slip the metal sheath forward along the traction wire, and finally fix the metal sheath and the traction wire to the handle respectively, so that there is no need to repeatedly insert and withdraw the endoscope and the stone basket, thereby effectively reducing the surgical difficulty and to a certain extent helping to reduce the inconvenience of the operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the replaceable stone extraction and lithotripsy basket provided in an embodiment of the present application from one perspective;
[0014] Figure 2 is a schematic structural diagram of the handle;
[0015] Figure 3 is a schematic structural diagram of the plastic sheath;
[0016] Figure 4 is a schematic structural diagram of the metal sheath;
[0017] Figure 5 is a schematic structural diagram of the traction wire;
[0018] Figure 6 is Figure 5 the enlarged view at A in
[0019] Figure 7 is a schematic structural diagram of the finger cot;
[0020] Figure 8 isFigure 7 Enlarged view at position B in the figure.
[0021] Description of reference numerals in the drawings:
[0022] 1 - Handle, 101 - Connecting part, 2 - Plastic sheath, 3 - Metal sheath, 4 - Snap - pin hole, 5 - Spring pin, 6 - Traction wire, 601 - Insert piece, 602 - Socket, 7 - Finger sleeve, 701 - Slide seat, 7011 - Flat groove, 702 - Ring finger, 703 - Connecting part, 8 - Locking part, 801 - Paddle, 802 - Plug pin, 803 - Spring, 9 - Syringe adapter. Detailed implementation manners
[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.
[0024] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0025] In the present application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0026] In addition, if the embodiments of the present application involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.
[0027] Referring to the attached Figure 1 , the embodiments of the present application provide an interchangeable stone extraction and lithotripsy basket, which includes a handle 1, a metal sheath 3, a plastic sheath 2, and a traction wire 6. Among them, both the metal sheath 3 and the plastic sheath 2 are detachably connected to the handle 1, so that the plastic sheath 2 and the metal sheath 3 can be replaced with each other during the stone extraction process. The traction wire 6 is also detachably connected to the handle 1, so as not to affect the replacement and use of the plastic sheath 2 and the metal sheath 3 with the handle 1.
[0028] Specifically:
[0029] To achieve the detachable connection between the metal sheath 3 and the plastic sheath 2 and the handle 1, as shown in Figures 2 to 4 , a connecting portion 703101 is integrally formed at the front end of the handle 1. The connecting portion 703101 is provided with a counterbore along the axial direction. The metal sheath 3 and the plastic sheath 2 can be inserted into the counterbore. A clamping pin hole 4 is provided on the outer edge of the counterbore perpendicular to the axial direction of the handle 1. Side wall holes are provided on the side walls of one end of the metal sheath 3 and the plastic sheath 2 inserted into the counterbore. A spring pin 5 is installed in the side wall holes. The spring pin 5 can sink into the side wall holes in a compressed state and protrude out of the side wall holes in a natural state. It can be imagined that when the metal sheath 3 or the plastic sheath 2 is inserted into the counterbore, the spring pin 5 is pressed into the side wall holes. After the metal sheath 3 or the plastic sheath 2 is completely inserted into the counterbore, the spring pin 5 is aligned with the clamping pin hole 4. At this time, the spring pin 5 pops out and snaps into the clamping pin hole 4, thereby connecting and fixing the metal sheath 3 or the plastic sheath 2 to the handle 1. When it is necessary to remove the metal sheath 3 or the plastic sheath 2 from the handle 1, just press the spring pin 5 inward and then pull the metal sheath 3 or the plastic sheath 2 outward, and the metal sheath 3 or the plastic sheath 2 can be removed from the handle 1. It should be noted that in the initial state, the handle 1 is connected to the plastic sheath 2.
[0030] In addition, in a preferred embodiment, a syringe adapter 9 is provided on the outer wall of one end of the plastic sheath tube 2 and the metal sheath tube 3 that are connected to the handle 1, facilitating the connection of a syringe, so that a medicinal solution can be injected into the biliary tract through the plastic sheath tube 2 or the metal sheath tube 3.
[0031] Meanwhile, in this embodiment, to achieve the detachable connection between the traction wire 6 and the handle 1, as Figures 5 to 7 shown, a finger sleeve 7 is slidably provided on the handle 1. The finger sleeve 7 includes a sliding seat 701 that slides along the handle 1, finger rings 702 located on both sides of the sliding seat 701, and a connecting portion 703101 integrally formed between the sliding seat 701 and the finger rings 702. A flat groove 7011 is provided on the side of the sliding seat 701 facing the traction wire 6. One end of the traction wire 6 located on the sliding seat 701 is integrally formed with an insertion piece 601. A jack 602 is provided in the center of the insertion piece 601. The insertion piece 601 is inserted into the flat groove 7011, and a locking member 8 for locking the insertion piece 601 in the flat groove 7011 is provided on the connecting portion 703101.
[0032] In an exemplary embodiment, the locking member 8 includes a toggle 801, a pin 802, and a spring 803. A chute is provided in the connecting portion 703101 along the transverse direction. The toggle 801 is arranged to slide in the chute. A guiding hole is provided on one side of the chute communicating with the flat groove 7011. The pin 802 is integrally formed on the side of the toggle 801 facing the flat groove 7011 and extends from the guiding hole to the side of the flat groove 7011 to be inserted into the jack 602 where the insertion piece 601 is located. A spring 803 is sleeved on the pin 802 between the sliding seat 701 and the toggle 801. In the natural state, the pin 802 is inserted into the jack 602. When the toggle 801 is toggled backward, the pin 802 withdraws from the jack 602, so that the traction wire 6 can be removed from the handle 1.
[0033] In summary, the usage method of an interchangeable stone extraction and lithotripsy basket provided by the embodiment of the present application is as follows:
[0034] Insert the plastic sheath tube 2 into the biliary tract along with the endoscope. If the plastic sheath tube 2 can achieve the effect of crushing stones, then operate the handle 1 to enclose the stone with the basket and pull it into the plastic sheath tube 2 for crushing and then take it out of the body.
[0035] If the plastic sheath tube 2 cannot crush relatively hard stones, at this time, use a rod to press the spring pin 5 inward, then withdraw the plastic sheath tube 2 from the handle 1, then move the slider 801 outward to make the latch pin 802 withdraw from the jack 602, and pull the traction wire 6 out of the handle 1 (during this process, the traction wire 6 still remains in the biliary tract). At this time, the plastic front tube can be withdrawn from the traction wire 6, then the metal sheath tube 3 is sleeved onto the traction wire 6, the traction wire 6 is sent into the handle 1, so that the insertion piece 601 is inserted into the flat groove 7011, and the latch pin 802 is inserted back into the jack 602 to complete the fixation of the traction wire 6 and the handle 1. After the fixation of the traction wire 6 is completed, the metal sheath tube 3 is inserted into the handle 1 and is clamped with the clamping pin hole 4 through the spring pin 5, thereby completing the replacement of the metal sheath tube 3. At this time, the handle 1 can be operated to make the basket bring the stones into the metal sheath tube 3 to be crushed and then taken out of the body with the endoscope.
[0036] It can be seen that an interchangeable stone extraction and crushing basket provided by an embodiment of the present application can facilitate the interchangeable use of a plastic sheath tube and a metal sheath tube during the stone extraction process, so that there is no need to repeatedly insert and withdraw the endoscope and the stone basket, thereby effectively reducing the surgical difficulty and to a certain extent helping to reduce the inconvenience of the surgical operation.
[0037] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An interchangeable stone quarrying and crushing basket, characterized in that: It includes a handle, a metal sheath tube, a plastic sheath tube and a traction wire. The metal sheath tube and the plastic sheath tube are both detachably connected to the handle. A finger sleeve is slidably provided on the handle. The traction wire is inserted into the metal sheath tube or the metal sheath tube and is detachably connected to the finger sleeve.
2. The interchangeable stone quarrying and crushing basket according to claim 1, characterized in that: The handle is provided with a connecting portion, and the connecting portion is provided with a snap-in pin hole along an axial direction perpendicular to the handle. Spring pins are provided on the outer walls of the plastic sheath tube and the metal sheath tube. The spring pins can be snap-fitted with the snap-in pin hole when the plastic sheath tube or the metal sheath tube is inserted into the connecting portion.
3. The interchangeable stone retrieval and crushing basket according to claim 1 is characterized in that: The finger sleeve includes a slide seat slidably connected to the handle, finger rings arranged on both sides of the slide seat, and a connecting part integrally formed between the slide seat and the finger ring. The slide seat is provided with a flat groove on the side facing the traction wire, and the end of the traction wire is combined to form an insert, which is inserted into the flat groove. The connecting part is provided with a locking piece for locking the insert in the flat groove.
4. The interchangeable stone quarrying and crushing basket according to claim 3 is characterized in that: The locking member comprises a paddle which slides along an axial direction perpendicular to the handle, a latch is arranged on one side of the paddle which is connected to the flat groove, a spring is sleeved on the latch, and a plug hole is arranged on the plug to be inserted into the plug.
5. The interchangeable stone retrieval and crushing basket according to claim 1, characterized in that: The plastic sheath tube or the metal sheath tube is provided with an empty needle connector.