Switching device for forceps channel hole of endoscope

Abstract

The utility model provides a switching device for an endoscope clamp channel hole, which comprises a switching device body and an elastic connecting piece, the switching device body is provided with a matching groove, and the matching groove is matched with the appearance of an instrument insertion part of an endoscope; the adapting connector is installed on the switching device body and connected with the ultrasonic biopsy needle in a matched mode, the elastic connecting piece is arranged in the matching groove, an installation cavity is formed in the elastic connecting piece in a penetrating mode, the upper end of the installation cavity is communicated with an inner hole of the adapting connector, and the lower end of the installation cavity is used for being clamped and matched with the forceps channel connector. The switching device is reasonable in structural design, the switching device can be conveniently and rapidly matched with an endoscope clamp channel hole for installation, the ultrasonic biopsy needle can be conveniently and rapidly connected through the Luer connector on the switching device after installation, and connection and disassembly of the switching device, the ultrasonic biopsy needle and the switching device have the advantages of being convenient, stable and reliable. In addition, the end part of the forceps channel hole cannot be directly abraded when the ultrasonic biopsy needle is mounted and dismounted, so that the use cost and the maintenance cost of the endoscope are further reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, particularly endoscopes, and especially to an adapter for an endoscope forceps channel. Background Technology

[0002] Endoscopic ultrasound-guided biopsy (EUS-FNA) is a minimally invasive biopsy method that combines endoscopic ultrasound with fine-needle aspiration. It is mainly used to obtain samples of deep tissues or lymph nodes for pathological diagnosis. When a suspicious lesion is found, an ultrasound biopsy needle is inserted into the target area through the endoscopic biopsy channel under ultrasound guidance to extract cells or tissue fragments for subsequent pathological examination. It can be used for, but is not limited to, the diagnosis of pancreatic lesions, staging of gastrointestinal tumors, mediastinal and retroperitoneal lesions, and examination of the biliary system, among other diseases.

[0003] Existing endoscopes have a Luer interface in their insertion connector. The ultrasonic biopsy needle is inserted into the endoscope's forceps channel through this Luer interface to complete subsequent operations. In use, both the ultrasonic biopsy needle and the endoscope need to be held separately by the surgeon. However, if the surgeon needs to perform other operations, they will face difficulties because the ultrasonic biopsy needle and the endoscope are not relatively fixed together.

[0004] Therefore, it is necessary to design an adapter to meet the relatively fixed requirements of assembling endoscopes and ultrasonic biopsy needles, so as to effectively achieve a stable connection between the ultrasonic biopsy needle and the endoscope, and ensure that the biopsy needle can accurately reach the target tissue for puncture biopsy under the guidance of the endoscope. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides an adapter for endoscope forceps channel holes, which can facilitate the stable connection of ultrasonic biopsy needles to endoscope forceps channel holes. The connection and disassembly process is convenient and quick, and the ultrasonic biopsy needle and forceps channel hole are stably and reliably inserted and connected, reducing the damage to the endoscope forceps channel holes caused by the disassembly and assembly of ultrasonic biopsy needles, and effectively reducing the cost of use and maintenance.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an adapter for an endoscope forceps channel, used to connect an endoscope to an ultrasonic biopsy needle. The adapter includes an adapter body and an elastic connector. The adapter body has a mating groove that is adapted to the shape of the instrument insertion part of the endoscope. An adapter connector is installed on the adapter body and is mated to the ultrasonic biopsy needle. The elastic connector is disposed in the mating groove and has a through-hole for installation. The upper end of the installation chamber communicates with the inner hole of the adapter connector, and the lower end is for the forceps channel connector of the instrument insertion part of the endoscope to engage.

[0007] In the above solution, an adapter device is rationally designed. The adapter device body connects to the ultrasonic biopsy needle via an adapter connector. The adapter device body has a mating groove corresponding to the instrument insertion part, which mates with the instrument insertion part, allowing the forceps channel connector on the instrument insertion part to connect and mate with the elastic connector. Using the adapter device as the connecting and positioning connector between the ultrasonic biopsy needle and the endoscope not only facilitates quick and easy disassembly and installation, but also eliminates excessive friction between the ultrasonic biopsy needle and the endoscope forceps channel hole during disassembly and installation. This reduces damage to the endoscope forceps channel hole caused by biopsy needle disassembly and installation, effectively lowering usage and maintenance costs.

[0008] Furthermore, the adapter body has multiple through holes extending from the upper surface to the upper groove surface of the mating groove. The upper section of these holes is for the fitting connector to be installed, and the lower section is for the elastic connector to be installed. The tube portion of the ultrasonic biopsy needle can pass through these holes and enter the forceps channel connector, thereby entering the endoscope forceps channel.

[0009] Furthermore, the elastic connector is a three-section cylindrical structure. This three-section cylindrical structure includes a truncated cone section, a direct connecting section, and a lower plug section, all integrally formed from top to bottom. The truncated cone section has a shape that is smaller at the top and larger at the bottom. The direct connecting section is connected to the lower end face of the truncated cone section and its diameter is smaller than the diameter of the lower end face. The lower plug section is connected to the lower end face of the direct connecting section and its diameter is larger than the diameter of the lower end face. The truncated cone section and the direct connecting section are connected and fitted with the lower section of the multi-segment hole of the adapter body. The elastic connector is connected to the adapter body through the truncated cone section and the direct connecting section, completing the positioning and installation of the elastic connector.

[0010] Furthermore, the section of the mounting chamber corresponding to the section for the clamping connector to engage is located at the lower plug position of the elastic connector.

[0011] Furthermore, the corresponding installation chamber inside the lower plug is a clamping connection mating chamber, and the inner wall of the clamping connection mating chamber is adapted to the shape of the clamping connection joint.

[0012] To facilitate the mating of the clamp channel connector with the clamp channel connection cavity and further improve the ease of connection, the circumferential side of the lower plug is cut with a notch corresponding to the mating direction of the mounting groove, which communicates with the internal clamp channel connection cavity. The clamp channel connector is inserted into the clamp channel connection cavity from the side through this notch, so that while the mating groove and the instrument insertion part are mated and connected, the clamp channel connector can also mate with the clamp channel connection cavity, completing the connection and assembly of the adapter and the endoscope.

[0013] Furthermore, in the shape design of the adapter, the adapter body includes an upper mounting plate and a lower mating component. The upper mounting plate is a flat plate with a U-shaped outer edge, while the lower mating component is a bent U-shaped structure. The two ends of the U-shaped bend in the lower mating component extend upwards and connect with the U-shaped ends of the flat plate of the upper mounting plate. The shape connection between the lower mating component and the upper mounting plate forms a mounting groove that mates with the insertion part of the endoscope instrument.

[0014] Furthermore, to facilitate the disassembly of the adapter relative to the endoscope, there is a gap between the projection of the lower inner edge of the mounting chamber of the elastic connector at the U-shaped bend position of the lower fitting and the inner edge of the U-shaped bend. When disassembling, a finger or tool can be inserted into this gap to drive the adapter to detach from the endoscope instrument insertion part.

[0015] Preferably, the lower end of the ultrasonic biopsy needle has a first Luer connector, the adapter connector is a second Luer connector, and the forceps channel connector is a third Luer connector. The first Luer connector and the second Luer connector are connected and fitted together. After the ultrasonic biopsy needle passes through the first Luer connector and the second Luer connector, it is connected to the forceps channel hole by the third Luer connector.

[0016] The beneficial effects of this utility model are that the adapter for the endoscope forceps channel provided by this utility model has a reasonable structural design. The adapter can be easily and quickly installed with the endoscope forceps channel. After installation, the ultrasonic biopsy needle can be easily and quickly connected through the Luer connector on the adapter. The connection and disassembly of the three have the advantages of being convenient, stable and reliable. Moreover, the installation and disassembly of the ultrasonic biopsy needle will not cause direct wear to the end of the forceps channel, further reducing the use cost and maintenance cost of the endoscope. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the elastic connector in Embodiment 1 of this utility model.

[0020] Figure 3 This is a cross-sectional view of one embodiment of the present utility model.

[0021] Figure 4 This is a side view of Embodiment 1 of this utility model.

[0022] Figure 5 This is a schematic diagram of the first embodiment of the present invention installed on an endoscope (the arrow indicates the installation direction).

[0023] Figure 6 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0024] Figure 7 This is a schematic diagram of the elastic connector in Embodiment 2 of this utility model.

[0025] Figure 8 This is a cross-sectional view of Embodiment 2 of this utility model.

[0026] Figure 9 This is a side view of Embodiment 2 of this utility model.

[0027] Figure 10 This is a schematic diagram of the second embodiment of the present invention when it is installed on an endoscope (the arrow indicates the installation direction).

[0028] In the figure: 1. Adaptor connector; 2. Adapter body; 2-1. Upper mounting plate; 2-2. Lower mating part; 3. Elastic connector; 3-1. Conical part; 3-2. Straight connection part; 3-3. Lower plug part; 3-4. Notch; 3-5. Forceps channel connection mating cavity; 4. Forceps channel connection connector; 5. Instrument insertion part; 6. Ultrasonic biopsy needle. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0030] Example 1:

[0031] like Figures 1 to 4 The adapter device for an endoscope forceps channel shown is an embodiment of this utility model. The handle housing of the endoscope is usually provided with an instrument insertion part 5. One end of the instrument insertion part 5 is provided with a forceps channel connector 4 that communicates with the endoscope forceps channel. The forceps channel connector 4 can also be referred to as a forceps channel hole. This adapter device is used to fix the endoscope and the ultrasonic biopsy needle in a fixed position.

[0032] In this embodiment, the connector is selected based on the ultrasonic biopsy needle and the endoscopic forceps channel, and can be, but is not limited to, a Luer connector. The lower end of the ultrasonic biopsy needle 6 has a first Luer connector, the adapter connector 1 is a second Luer connector, and the forceps channel connector 4 is a third Luer connector. The first Luer connector and the second Luer connector are connected and fitted together. After the needle tube of the ultrasonic biopsy needle 6 passes through the first Luer connector and the second Luer connector, it is connected to the forceps channel hole by the third Luer connector.

[0033] Specifically, the adapter provided in Embodiment 1 includes an adapter body 2 and an elastic connector 3. In this embodiment, the adapter body 2 includes an upper mounting plate 2-1 and a lower mating member 2-2. The upper mounting plate 2-1 has a flat plate structure with a U-shaped outer edge. The lower mating member 2-2 has a U-shaped bent structure, and the two ends of the U-shaped bent part of the lower mating member 2-2 extend upward and connect with the two ends of the U-shaped flat plate structure of the upper mounting plate 2-1. The connection between the upper mounting plate 2-1 and the lower mating member 2-2 forms a mating groove on the lower end face of the upper mounting plate 2-1 and the inner wall of the lower mating member 2-2 that matches the shape of the instrument insertion part 5. When the adapter body 2 is connected to the instrument insertion part 5, the instrument insertion part 5 is inserted to form an interference fit.

[0034] Meanwhile, to facilitate the disassembly of the adapter relative to the endoscope, there is a gap between the projection of the lower inner edge of the mounting chamber of the elastic connector 3 at the U-shaped bend position of the lower mating part 2-2 and the inner edge of the U-shaped bend. During disassembly, a finger or tool can be inserted into this gap, which facilitates the application of an outward force to the adapter, thereby causing the adapter to detach from the endoscope instrument insertion part 5.

[0035] The upper mounting plate 2-1 of the adapter body 2 has multiple through holes between its upper and lower end faces. An adapter connector 1 is installed at the upper end of each through hole, and the lower end of the ultrasonic biopsy needle is connected and positioned to the adapter body 2 via the adapter connector 1. The lower section of the through holes is for the installation of an elastic connector 3. An installation chamber is formed inside the elastic connector 3. The upper end of this installation chamber communicates with the inner hole of the adapter connector 1, and the lower end is for the insertion and engagement of a forceps connector 4.

[0036] Specifically, in this embodiment, the elastic connector 3 is made of silicone material, which has good elasticity and sealing performance. In terms of shape, the elastic connector 3 is a three-section cylindrical structure; the three-section cylindrical structure includes a truncated cone section 3-1, a direct connection section 3-2, and a lower plug section 3-3, which are integral from top to bottom. The truncated cone section 3-1 has a truncated cone shape that is smaller at the top and larger at the bottom. The direct connection section 3-2 is connected to the lower end face of the truncated cone section 3-1 and its diameter is smaller than the diameter of the lower end face of the truncated cone section 3-1. The lower plug section 3-3 is connected to the lower end face of the direct connection section 3-2 and its diameter is larger than the diameter of the lower end face. The truncated cone section 3-1 and the direct connection section 3-2 are connected and installed with the lower section of the multi-segment hole of the adapter body 2. The elastic connector 3 is connected to the adapter body 2 via the frustum portion 3-1 and the straight connection portion 3-2, completing the positioning and installation of the elastic connector 3. The design of the frustum portion 3-1 creates a backstop effect for the installation of the elastic connector 3 and the upper mounting plate 2-1, preventing it from detaching from the adapter body 2 due to stress on its lower end. The mounting chamber corresponding to the section into which the forceps connection connector 4 engages is located at the lower plug portion 3-3 of the elastic connector 3. The mounting chamber within the lower plug portion 3-3 is the forceps connection engagement chamber 3-5, the inner wall of which is adapted to the shape of the forceps connection connector 4. During assembly, the needle tube portion of the ultrasonic biopsy needle can pass through the adapter connector 1, the multi-segment hole, and the forceps connection connector 4, thereby entering the endoscope forceps channel.

[0037] like Figure 5 As shown, during assembly, the adapter connector 1 is assembled with the adapter body 2, and the elastic connector 3 is assembled with the adapter body 2. After the adapter provided in Embodiment 1 is assembled, relative to the endoscope, the adapter is connected to the instrument insertion part 5 of the endoscope from top to bottom. The outer cover of the adapter body 2 is fitted to the outside of the instrument insertion part 5. The clamping cavity 3-5 of the elastic connector 3 undergoes elastic deformation, and the clamping connector 4 is press-fitted with the inner wall of the clamping cavity 3-5 of the elastic connector 3, thus completing the connection between the adapter and the endoscope. When it is necessary to insert an ultrasonic biopsy needle into the endoscope, the needle tube of the ultrasonic biopsy needle is inserted through the adapter connector 1, and the Luer connector of the ultrasonic biopsy needle is positioned and connected to the adapter connector 1.

[0038] During disassembly, first disconnect the Luer connector of the ultrasonic biopsy needle from the adapter connector 1 of the adapter device, and then pull out the ultrasonic biopsy needle. Then, apply an upward and outward force to the lower mating part 2-2 of the adapter device body 2 to detach the adapter device from the endoscope instrument insertion part 5. The elastic connector 3 is made of silicone. During the installation and disassembly of the elastic connector 3 and the endoscope's clamp channel connection connector 4, the elastic connector 3 deforms to complete the interference fit and disassembly of the clamp channel connection connector 4 and the elastic connector 3. This fitting and disassembly operation will not damage the endoscope's clamp channel connection connector 4. Simultaneously, the adapter device, as a connecting and positioning connector between the ultrasonic biopsy needle and the endoscope, is not only convenient and quick to install and disassemble, but also allows for separate operations of both components relative to the adapter device during disassembly. Therefore, there is no excessive friction between the ultrasonic biopsy needle and the endoscope's clamp channel hole, thereby reducing damage to the endoscope's clamp channel hole during biopsy needle installation and disassembly, effectively reducing usage and maintenance costs.

[0039] Example 2:

[0040] like Figures 6 to 9 The adapter for the endoscope forceps channel shown is a second embodiment of this utility model. Based on the first embodiment, the second embodiment further improves the external structure of the elastic connector 3.

[0041] Specifically, the circumferential side of the lower plug portion 3-3 of the elastic connector 3 is cut with a notch 3-4 that communicates with the internal clamping cavity 3-5 in the mating direction of the mounting groove. The clamping cavity connecting joint 4 is inserted into the clamping cavity 3-5 from the side through the notch 3-4.

[0042] Thus, in Embodiment 2, the installation between the adapter and the endoscope is smoother and more convenient. Compared to Embodiment 1, which uses vertical force for installation, Embodiment 2 installs the endoscope from the side.

[0043] like Figure 10 As shown, during assembly, similar to Embodiment 1, the adapter is assembled first. The adapter and instrument insertion part 5 are connected from the side. Align the direction of the mating groove formed by the adapter and the direction of the notch 3-4 of the elastic connector 3 with the side of the instrument insertion part 5, and install the adapter onto the endoscope from right to left. This installation process allows the mating groove to connect with the instrument insertion part 5, while the clamp channel connecting connector 4 can also mate with the clamp channel connecting mating cavity 3-5, making the installation process more convenient and faster. Furthermore, side installation and side removal further prevent the elastic connector 3 from detaching from the adapter body 2, resulting in better stability and reliability.

[0044] During disassembly, first disconnect the Luer connector of the ultrasonic biopsy needle from the adapter connector 1 of the adapter device, and then pull out the ultrasonic biopsy needle. Then, use your fingers or other tools to pry open the inner wall of the lower mating part 2-2 and apply lateral force to the adapter device. This will easily and quickly detach the adapter device from the endoscopic instrument insertion part 5. During the detachment process, the forceps channel connector 4 also detaches from the forceps channel connection mating cavity 3-5. Compared with the detachment method in Embodiment 1, which requires squeezing the elastic connector 3 to deform the elastic connector 3, this method is more convenient and faster.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An adapter for an endoscope forceps port, used to connect an endoscope to an ultrasonic biopsy needle, characterized in that: The device includes an adapter body and an elastic connector. The adapter body has a mating groove that is adapted to the shape of the instrument insertion part of the endoscope. The adapter body is equipped with an adapter connector that is mated to an ultrasonic biopsy needle. The elastic connector is disposed in the mating groove and has a through-hole for installation. The upper end of the installation chamber communicates with the inner hole of the adapter connector, and the lower end is used for the clamping connector of the instrument insertion part of the endoscope to engage.

2. The adapter for an endoscope forceps channel as described in claim 1, characterized in that: The adapter body has multiple holes extending from the upper end face to the upper groove face of the mating groove. The upper section of the holes is for the fitting connector to be installed, and the lower section is for the elastic connector to be installed.

3. The adapter for an endoscope forceps channel as described in claim 2, characterized in that: The elastic connector is a three-section column structure. The three-section column structure includes a truncated cone section, a direct connection section, and a lower plug section, which are integrally formed from top to bottom. The truncated cone section has a truncated cone shape that is smaller at the top and larger at the bottom. The direct connection section is connected to the lower end face of the truncated cone section and its diameter is smaller than the diameter of the lower end face of the truncated cone section. The lower plug section is connected to the lower end face of the direct connection section and its diameter is larger than the diameter of the lower end face. The truncated cone section and the direct connection section are connected and fitted with the lower section of the multi-segment hole of the adapter body.

4. The adapter for an endoscope forceps channel as described in claim 3, characterized in that: The section of the mounting chamber corresponding to the section for the clamping connector to engage is located at the lower plug position of the elastic connector.

5. The adapter for an endoscope forceps channel as described in claim 4, characterized in that: The corresponding installation chamber inside the lower plug is a clamp connection mating chamber, and the inner wall of the clamp connection mating chamber is adapted to the shape of the clamp connection joint.

6. The adapter for an endoscope forceps channel as described in claim 5, characterized in that: The circumferential side of the lower plug is cut with a notch corresponding to the mating direction of the mounting groove, which communicates with the internal clamping channel mating cavity. The clamping channel connecting joint is inserted into the clamping channel mating cavity from the side through the notch.

7. The adapter for an endoscope forceps channel as described in claim 1, characterized in that: The adapter body includes an upper mounting plate and a lower mating component. The upper mounting plate has a flat plate structure with a U-shaped outer edge in cross-section, while the lower mating component has a U-shaped bent structure in cross-section. The two ends of the U-shaped bent component of the lower mating component extend upward and connect with the two ends of the U-shaped structure of the upper mounting plate.

8. The adapter for an endoscope forceps channel as described in claim 7, characterized in that: There is a gap between the projection of the lower inner edge of the mounting chamber of the elastic connector at the U-shaped bend position of the lower mating part and the inner edge of the U-shaped bend.

9. The adapter for an endoscope forceps channel as described in claim 1, characterized in that: The ultrasonic biopsy needle has a first Luer connector at its lower end, the adapter connector is a second Luer connector, and the forceps channel connector is a third Luer connector. The first Luer connector and the second Luer connector are connected and fitted together. After the ultrasonic biopsy needle passes through the first Luer connector and the second Luer connector, it is connected to the forceps channel hole by the third Luer connector.

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