Biopsy tract plug

Abstract

The utility model discloses a biopsy channel plug, include: plug cover, be equipped with first through -hole on the plug cover, plug body, plug cover detachable connection is in the plug body, and can rotate relative to the plug body, the inside of plug body is provided with the accommodation cavity, and the accommodation cavity is linked together with first through -hole, two opposite arrangement's clamping plate, all slide setting in the accommodation cavity, two opposite arrangement's push board, one end is fixedly connected with plug cover, and the other end of push board extends to the accommodation cavity, and push board has first position and second position, wherein, when push board is in first position, push board is clamped between the accommodation cavity inner wall and clamping plate, is used for pushing the clamping plate and is clamped the target object that passes through first through -hole and the accommodation cavity. Therefore, the cutter body of fixed mucosa incision knife can be controlled, thereby the cutter head position of fixed mucosa incision knife is made, and the cutter head is always in the length of being more suitable, not only has improved the operation efficiency, has also reduced the operation difficulty, has saved the manpower cost.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a biopsy port plug. Background Technology

[0002] Endoscopic submucosal dissection (ESD) plays a crucial role as the primary endoscopic resection method for early gastrointestinal cancers. In clinical practice, for lesions requiring en bloc resection endoscopically but not achievable using snare techniques, clinical guidelines explicitly recommend ESD to ensure complete and thorough removal of the lesion.

[0003] In the ESD procedure, the surgeon first inserts a mucosal incision scalpel through a biopsy channel plug mounted on the biopsy channel, and then propels the scalpel into the stomach or intestinal lumen via the biopsy channel. The scalpel can slide relative to the biopsy channel plug. After making a circumferential incision of the lesion, meticulous dissection is performed along the submucosa to completely remove the lesion. However, during the entire procedure, especially in colorectal ESD, factors such as the patient's respiratory movements, the complex folds of the colon and rectum, and continuous intestinal peristalsis often cause the scalpel tip to retract into the scope. As a result, the scalpel tip cannot reach the lesion, failing to achieve the desired dissection. In such cases, the surgeon often needs to repeatedly adjust the scalpel tip position, and additional nurses are required to stabilize the scalpel, reducing surgical efficiency and increasing the difficulty of the procedure. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, one objective of this invention is to provide a biopsy channel plug that can fix the blade of a mucosal incision knife, thereby fixing the position of the blade tip and ensuring that the blade tip is always at a suitable length. This not only improves surgical efficiency but also reduces surgical difficulty and saves labor costs.

[0006] To achieve the above objectives, this utility model proposes a biopsy channel plug, comprising: a plug cap having a first through hole; a plug body having the plug cap detachably connected to the plug body and rotatable relative to the plug body, the plug body having an internal receiving cavity communicating with the first through hole; two opposing clamping plates slidably disposed within the receiving cavity; and two opposing push plates, one end of which is fixedly connected to the plug cap, the other end of which extends into the receiving cavity. The push plates have a first position and a second position, wherein, when the push plate is in the first position, the push plate is clamped between the inner wall of the receiving cavity and the clamping plate, for pushing the clamping plate to clamp a target object passing through the first through hole and the receiving cavity; when the push plate is in the second position, the push plate and the clamping plate are in a non-contact state, for releasing the clamping of the target object.

[0007] This biopsy channel plug allows for flexible switching of the push plate between a first and a second position by rotating the plug cap. When the push plate is in different positions, its force on the clamping plate can be altered, thereby achieving the fixation or release of the target object (such as a mucosal incision knife). In the fixed state, the biopsy channel plug effectively secures the mucosal incision knife body, stabilizing the blade position and ensuring the blade is always at a suitable length. This design not only significantly improves surgical efficiency and reduces the difficulty of surgical procedures but also effectively saves labor costs. When the clamping effect on the mucosal incision knife body is released, the surgeon can freely adjust the blade length to fully meet different needs during the surgical process.

[0008] In addition, the biopsy port plug proposed in the above application may also have the following additional technical features:

[0009] Specifically, the push plate includes an arc-shaped plate and an extrusion cylinder, wherein the arc-shaped plate and the extrusion cylinder are integrally formed to form a comma-shaped structure.

[0010] Specifically, the surfaces of the arc-shaped plate and the extrusion cylinder adjacent to the inner wall of the receiving cavity form an arc-shaped guide surface, and at least a portion of the wall surface of the arc-shaped guide surface is adapted to the inner wall of the receiving cavity.

[0011] Specifically, it also includes two opposing first limiting posts and two opposing second limiting posts, wherein...

[0012] The first limiting post and the second limiting post are respectively disposed in the receiving cavity;

[0013] The arc-shaped plate has a first port at the end away from the extrusion cylinder. When the arc-shaped plate rotates relative to the plug, the first limiting post can be locked and embedded in the first port.

[0014] The end of the extrusion cylinder away from the arc-shaped plate is provided with a second port. When the extrusion cylinder rotates relative to the plug, the second limiting post can be locked and embedded in the second port.

[0015] Specifically, the clamping plate includes a sliding end and a clamping end. Two symmetrically arranged sliding grooves are provided in the receiving cavity. The sliding end slides in the sliding grooves, and one end of the sliding end extends out of the sliding grooves and is fixedly connected to the clamping end.

[0016] Specifically, the end of the clamping end away from the sliding end has an arc-shaped wall.

[0017] Specifically, a spring is provided between the sliding end and the inner wall of the groove.

[0018] Specifically, the end of the plug body away from the plug cap is provided with a flared opening, the flared opening is connected to the receiving cavity, and the flared opening is detachably connected to the biopsy channel.

[0019] Specifically, an annular groove is provided on the outer peripheral wall of the plug body, and an elastic ring is provided on the inner peripheral wall of the plug cover. The elastic ring can be embedded and engaged in the annular groove. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the split structure of a biopsy port plug according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of a biopsy port plug according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the push plate in the second position according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the push plate in the first position according to an embodiment of the present invention;

[0026] Figure 5 This is a partial structural schematic diagram of a biopsy port plug according to an embodiment of the present invention;

[0027] Figure 6 According to this utility model Figure 2 Enlarged structural diagram of area A in the middle;

[0028] Figure 7 This is a schematic diagram of a biopsy channel plug installed on the biopsy channel of a digestive endoscope according to an embodiment of the present invention.

[0029] As shown in the figure:

[0030] 1. Plug cap; 10. First through hole;

[0031] 2. Plug body; 20. Receiving cavity; 21. Flared opening; 22. Sliding groove; 23. Annular groove;

[0032] 3. Clamping plate; 30. Sliding end; 31. Clamping end;

[0033] 4. Push plate; 40. Arc plate; 41. Extruded cylinder; 42. Arc guide surface; 400. First port; 410. Second port;

[0034] 5. Spring;

[0035] 6. Elastic ring;

[0036] 7. First limiting post;

[0037] 8. Second limit post;

[0038] 1000, Biopsy channel plug. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments and features of this utility model can be combined with each other.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0041] The biopsy channel plug of the present invention will now be described with reference to the accompanying drawings.

[0042] The biopsy channel plug provided in this embodiment can be applied to the biopsy channel in a digestive endoscope.

[0043] like Figure 1As shown, the biopsy channel plug of this utility model embodiment may include a plug cap 1, a plug body 2, two oppositely arranged clamping plates 3, and two oppositely arranged pushing plates 4.

[0044] The plug cap 1 has a first through hole 10. The plug cap 1 is detachably connected to the plug body 2 and can rotate relative to the plug body 2. The plug body 2 has a receiving cavity 20 inside, which is connected to the first through hole 10.

[0045] It should be noted that when the biopsy channel plug 1000 is installed on the biopsy channel, the receiving cavity 20, the first through hole 10 and the biopsy channel are coaxial and connected to each other, ensuring that the mucosal cutting knife can be smoothly inserted into the biopsy channel through the first through hole 10 and the receiving cavity 20.

[0046] Two opposing clamping plates 3 are slidably disposed within the receiving cavity 20. The two clamping plates 3 are arranged relative to each other along the axis of the receiving cavity 20, and the clamping gap is adjusted by moving them closer or further apart, thereby achieving the clamping or release of the target object (e.g., a mucosal incision knife). This symmetrical force application method ensures that the target object is subjected to uniform force during clamping, avoiding displacement or tilting caused by unilateral force application, thus greatly improving the stability of clamping.

[0047] Specifically, for example, the clamping plate 3 can be slidably disposed in the receiving cavity 20 by setting a guide rail and a slider in cooperation in the receiving cavity 20, that is, the guide rail is disposed in the receiving cavity 20, the slider is slidably connected to the guide rail, and the slider is connected to the clamping plate 3.

[0048] For example, refer to Figure 2 In one embodiment of this utility model, the clamping plate 3 includes a sliding end 30 and a clamping end 31. Two symmetrically arranged grooves 22 are provided in the receiving cavity 20. The sliding end 30 slides in the groove 22. One end of the sliding end 30 extends out of the groove 22 and is fixedly connected to the clamping end 31. By providing the groove 22 in the receiving cavity 20 in conjunction with the sliding end 30, the clamping plate 3 is slidably disposed in the receiving cavity 20. Compared with the guide rail-slider form, this method has a more compact structure, which can effectively reduce space occupation and realize the flexible sliding of the clamping plate 3 in a limited space.

[0049] One end of the push plate 4 is fixedly connected to the plug 1, and the other end of the push plate 4 extends into the receiving cavity 20. The push plate 4 has a first position and a second position.

[0050] Among them, reference Figure 4As shown, when the push plate 4 is in the first position, the push plate 4 is clamped between the inner wall of the receiving cavity 20 and the clamping plate 3, and is used to push the clamping plate 3 to clamp the target object passing through the first through hole 10 and the receiving cavity 20. The target object is a medical device, such as a mucosal incision knife.

[0051] Reference Figure 3 As shown, when the push plate 4 is in the second position, the push plate 4 and the clamping plate 3 are in a non-contact state, so as to release the clamping of the target object.

[0052] Specifically, during ESD (endoscopic submucosal dissection) surgery, medical staff can insert the target instrument (taking a mucosal incision knife as an example) into the biopsy channel through the first through-hole 10 and the receiving cavity 20. During the procedure, if it is determined that the tip of the mucosal incision knife has reached the lesion area, the position of the knife body needs to be fixed to ensure the stability of the tip position.

[0053] To achieve this, medical staff simply need to rotate the cap 1, which will cause the two push plates 4 to rotate as well. During rotation, the two push plates 4 will gradually come into contact with the corresponding clamping plates 3, pushing the two clamping plates 3 to move towards each other. When the push plate 4 rotates to the first position, it will be clamped between the inner wall of the receiving cavity 20 and the clamping plate 3, thereby generating a pushing force that causes the clamping plate 3 to tightly clamp the mucosal incision blade that passes through the first through hole 10 and the receiving cavity 20, thus fixing the blade. In this way, the tip of the mucosal incision blade can always be maintained at a suitable length.

[0054] Compared to existing technologies, this design effectively avoids situations where the blade retracts during surgery, preventing contact with the diseased tissue and necessitating repeated adjustments to the blade position to complete the dissection. This not only reduces the difficulty of the surgery but also significantly improves surgical efficiency, eliminating the need for nurse assistance and saving labor costs.

[0055] When it is necessary to release the fixation of the blade, or in ESD surgical scenarios where the length of the mucosal incision blade needs to be constantly adjusted, medical personnel can rotate the cap 1 in the opposite direction. The cap 1 drives the two push plates 4 to rotate in the opposite direction. During the rotation, the push plates 4 will gradually move away from the corresponding clamping plates 3. When the push plates 4 rotate to the second position, the push plates 4 and the clamping plates 3 are in a non-contact state. At this time, the clamping effect on the mucosal incision blade is released, and the surgeon can freely adjust the length of the blade to meet different surgical needs.

[0056] In one embodiment of this utility model, such as Figure 5 As shown, the push plate 4 includes an arc-shaped plate 40 and an extrusion cylinder 41.

[0057] The curved plate 40 and the extruded cylinder 41 are integrally formed to create a comma-shaped structure.

[0058] It should be noted that the push plate 4 is made of rubber, and the arc plate 40 and the extruded cylinder 41 are integrally formed, which eliminates the weak points at the structural connection and enhances the overall structural strength of the push plate 4.

[0059] In the above scheme, the design of the arc plate 40 allows the narrower end of the arc plate 40 to be inserted first into the gap between the clamping plate 3 and the inner wall of the receiving cavity 20 during the process of the pushing plate 4 pressing and pushing the clamping plate 3. This avoids the situation where the extrusion cylinder 41 cannot be directly inserted into the gap between the clamping plate 3 and the inner wall of the receiving cavity 20, which would cause jamming and affect the smoothness of operation. At the same time, the "comma-shaped" structure makes the thickness of the arc plate 40 gradually change. That is, the thickness of the arc plate 40 gradually increases towards the extrusion cylinder 41 until it is the same as the thickness of the extrusion cylinder 41. This forms a slow push on the clamping plate 3, realizes smooth insertion, ensures the continuity of operation, and ensures the stability of the movement of the clamping plate 3.

[0060] Furthermore, such as Figure 5 As shown, the surfaces of the arc plate 40 and the extruded cylinder 41 adjacent to the inner wall of the receiving cavity 20 form an arc-shaped guide surface 42, and at least part of the wall surface of the arc-shaped guide surface 42 is adapted to the inner wall of the receiving cavity 20.

[0061] In the above scheme, at least part of the arc-shaped guide surface 42 is adapted to the inner wall of the receiving cavity 20. This geometric matching design ensures that the movement trajectory of the push plate 4 is strictly limited to a predetermined path during rotation. For example, when the push plate 4 rotates with the plug 1, the arc-shaped guide surface 42 fits tightly against the inner wall of the receiving cavity 20, preventing the push plate 4 from swaying left and right or deviating from the central axis during rotation. This ensures the accuracy of the pushing action and, consequently, the accurate pushing direction of the clamping plate 3, allowing the clamping plate 3 to move in the expected direction and achieve stable clamping of the mucosal cutting blade.

[0062] In one embodiment of this utility model, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the biopsy channel plug of this utility model also includes two oppositely arranged first limiting posts 7 and two oppositely arranged second limiting posts 8.

[0063] The first limiting post 7 and the second limiting post 8 are respectively disposed in the receiving cavity 20. The end of the arc-shaped plate 40 away from the extrusion cylinder 41 is provided with a first port 400. When the arc-shaped plate 40 rotates relative to the plug body 2, the first limiting post 7 can be engaged and embedded in the first port 400 for fixation. At this time, it can be referred to Figure 4 This indicates that the push plate 4 is in the first position, and the push plate 4 is clamped between the inner wall of the receiving cavity 20 and the clamping plate 3, which is used to push the clamping plate 3 to clamp the target object passing through the first through hole 10 and the receiving cavity 20.

[0064] The end of the extrusion cylinder 41 away from the arc plate 40 is provided with a second port 410. When the extrusion cylinder 41 rotates relative to the plug body 2, the second limiting post 8 can be engaged and embedded in the second port 410 for fixation. At this time, it can be referred to Figure 3 When the push plate 4 is in the second position, the push plate 4 and the clamping plate 3 are in a non-contact state, so as to release the clamping of the target object.

[0065] In the above scheme, a first limiting post 7 is set to cooperate with the first port 400. The tight engagement between the first limiting post 7 and the first port 400 can not only limit the push plate 4 to the first position to ensure the clamping force of the push plate 4 on the clamping plate 3, but also fix the push plate 4, ensuring the stability of the push plate 4 when it pushes and clamps the clamping plate 3.

[0066] The second limiting post 8, in conjunction with the second port 410, not only limits the push plate 4 to the second position by tightly engaging with it, thus ensuring that the push plate 4 releases the clamping force on the clamping plate 3 and that the push plate 4 and the clamping plate 3 are in a non-contact state, but also fixes the push plate 4 in place. This prevents the plug 1 from shaking during the operation and avoids the push plate 4 from affecting the clamping plate 3, thereby ensuring the smooth movement of the mucosal incision blade.

[0067] In one embodiment of this utility model, such as Figure 1 As shown, the end of the clamping end 31 away from the sliding end 30 has an arc-shaped wall. It should be noted that the arc-shaped wall is adapted to the curvature of the mucosal incision blade body, thereby increasing the contact area between the clamping end 31 and the mucosal incision blade body, and thus improving the stability of the clamping end 31 when clamping and fixing the blade body.

[0068] In one embodiment of this utility model, such as Figure 2 As shown, a spring 5 is provided between the sliding end 30 and the inner wall of the groove 22.

[0069] In the above scheme, when the push plate 4 pushes the clamping plate 3 to clamp, the movement of the clamping plate 3 can stretch the spring 5, so that the spring 5 generates elastic potential energy. When the push plate 4 releases the pushing force on the clamping plate 3 and the push plate 4 and the clamping plate 3 are in a non-contact state, the spring 5 retracts on its own and pulls the clamping plate 3 back to the initial position, so as to avoid the clamping plate 3 from contacting the mucosal cutting knife and affecting the movement of the mucosal cutting knife.

[0070] In one embodiment of this utility model, such as Figure 2 and Figure 7 As shown, the end of the plug body 2 away from the plug cap 1 is provided with a flared opening 21, which is connected to the receiving cavity 20 and can be detachably connected to the biopsy channel.

[0071] In the above scheme, the size and shape of the flare 21 are strictly designed according to the industry standard of biopsy channel of digestive endoscope. By setting the flare 21, the installation can be completed simply by aligning the flare 21 with the biopsy channel of digestive endoscope and inserting it. This allows for quick installation of the biopsy channel plug 1000, which is simple and convenient to operate.

[0072] It should be noted that the friction between the flare 21 and the biopsy channel is greater than the friction between the stopper cap 1 and the stopper body 2. This design effectively reduces the possibility that the flare 21 will rotate when the stopper cap 1 is rotated.

[0073] To further ensure that the flare 21 does not rotate during the rotation of the stopper cap 1, the following methods can be used: When rotating the stopper cap 1, firmly hold the flare 21 or the stopper body 2 with your thumb and middle finger, and simultaneously use your index finger to rotate the stopper cap 1. Alternatively, use the thumb of your other hand to rotate the stopper cap 1. Furthermore, medical tape can be used to secure the flare 21 to the biopsy channel. Users can choose the appropriate method based on their personal habits and ease of operation; no restrictions are imposed.

[0074] In one embodiment of this utility model, such as Figure 2 and Figure 6 As shown, an annular groove 23 is provided on the outer peripheral wall of the plug body 2, and an elastic ring 6 is provided on the inner peripheral wall of the plug cover 1. The elastic ring 6 can be embedded and engaged in the annular groove 23.

[0075] In the above scheme, by setting the elastic ring 6 to elastically engage the annular groove 23, the rotation of the plug 1 can ensure the stability of the rotation of the plug 1, and at the same time, when the plug 1 is pulled outward by applying external force, the plug 1 can be easily separated from the plug body 2, thereby facilitating the disassembly and disinfection of the entire biopsy channel plug 1000.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0077] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A biopsy channel plug, characterized in that, include: A plug, wherein a first through hole is provided on the plug; The plug body has a plug cap that is detachably connected to the plug body and can rotate relative to the plug body. The plug body has a receiving cavity inside, and the receiving cavity is connected to the first through hole. Two opposing clamping plates are slidably disposed within the receiving cavity; Two opposing push plates, one end of which is fixedly connected to the plug, and the other end of which extends into the receiving cavity, the push plates having a first position and a second position, wherein... When the push plate is in the first position, the push plate is clamped between the inner wall of the receiving cavity and the clamping plate, and is used to push the clamping plate to clamp the target object passing through the first through hole and the receiving cavity; When the push plate is in the second position, the push plate and the clamping plate are in a non-contact state, so as to release the clamping of the target object.

2. The biopsy channel plug according to claim 1, characterized in that, The push plate includes an arc-shaped plate and an extrusion cylinder, wherein... The arc-shaped plate and the extruded cylinder are integrally formed to create a comma-shaped structure.

3. The biopsy channel plug according to claim 2, characterized in that, The surfaces of the arc-shaped plate and the extrusion cylinder adjacent to the inner wall of the receiving cavity form an arc-shaped guide surface, and at least a portion of the wall surface of the arc-shaped guide surface is adapted to the inner wall of the receiving cavity.

4. The biopsy channel plug according to claim 3, characterized in that, It also includes two opposing first limiting posts and two opposing second limiting posts, wherein, The first limiting post and the second limiting post are respectively disposed in the receiving cavity; The arc-shaped plate has a first port at the end away from the extrusion cylinder. When the arc-shaped plate rotates relative to the plug, the first limiting post can be locked and embedded in the first port. The end of the extrusion cylinder away from the arc-shaped plate is provided with a second port. When the extrusion cylinder rotates relative to the plug, the second limiting post can be locked and embedded in the second port.

5. The biopsy channel plug according to claim 1, characterized in that, The clamping plate includes a sliding end and a clamping end. Two symmetrically arranged grooves are provided in the receiving cavity. The sliding end slides in the grooves. One end of the sliding end extends out of the grooves and is fixedly connected to the clamping end.

6. The biopsy channel plug according to claim 5, characterized in that, The end of the clamping end away from the sliding end has an arc-shaped wall.

7. The biopsy channel plug according to claim 5, characterized in that, A spring is provided between the sliding end and the inner wall of the groove.

8. The biopsy channel plug according to claim 1, characterized in that, The end of the plug away from the plug cap is provided with a flared opening, which is connected to the receiving cavity and is detachably connected to the biopsy channel.

9. The biopsy channel plug according to claim 1, characterized in that, The outer peripheral wall of the plug body is provided with an annular groove, and the inner peripheral wall of the plug cover is provided with an elastic ring, which can be embedded and engaged in the annular groove.

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