Three-way pipe and three-way structure for endoscope

Abstract

The utility model discloses a three-way pipe and a three-way structure for an endoscope, the three-way pipe comprises a pipe body, and a first channel, a second channel and a third channel are arranged in the pipe body; the first channel and the second channel are coaxially arranged, the third channel is arranged between the first channel and the second channel, the included angle between the third channel and the first channel is an acute angle, and the first channel, the second channel and the third channel are all communicated. According to the three-way pipe and the three-way structure for the endoscope, after biopsy forceps enter the three-way pipe, bending of the biopsy forceps and contact between the biopsy forceps and the inner wall of the pipe body are reduced as much as possible, smooth entering and exiting of the biopsy forceps in a channel are achieved, using smoothness of the endoscope is enhanced, and operation risks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a three-way pipe and a three-way structure for an endoscope. Background Art

[0002] Endoscopes are widely used in the medical field for the diagnosis and treatment of diseased tissues in body cavities. When used by doctors, endoscopes need to be used with other medical devices such as biopsy forceps. They enter the patient's body through the three-way tube of the forceps channel to collect tissue samples, helping doctors to determine the nature and type of the lesions, as well as the extent and range of the lesions. By performing a biopsy on the diseased tissue, doctors can determine the benign or malignant degree of the lesions, choose appropriate treatment plans, and improve the accuracy and effectiveness of the treatment. Therefore, the structural design of the three-way tube is particularly important to ensure that the biopsy forceps can freely enter and exit the three-way tube.

[0003] The current three-way tube of the endoscope is relatively traditional. After the biopsy forceps enters the three-way tube, it will pass through the space of the three tubes in succession and extend from one of the exits. When turning, it will press against the inner wall of the three-way tube, causing bending and bending, and it will get stuck here when extending or extending. Because doctors need to insert and exit the biopsy forceps to collect tissue samples from patients many times when using repetitive endoscopes, it is easy to get stuck or even stuck during this process, which has a great impact on the safety of doctors operating endoscopes and patients. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a three-way tube and a three-way structure for an endoscope, so that after the biopsy forceps enter the three-way tube, the bending of the biopsy forceps and the contact with the inner wall of the tube body are reduced as much as possible, thereby avoiding all or some of the above defects.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a three-way pipe, the three-way pipe comprises a pipe body, and the pipe body is provided with a first channel, a second channel and a third channel;

[0006] The first channel and the second channel are coaxially arranged, the third channel is arranged between the first channel and the second channel, the angle between the third channel and the first channel is an acute angle, and the first channel, the second channel and the third channel are all connected.

[0007] Wherein, an extension line of the third channel intersects with the second channel.

[0008] Wherein, the cross-sectional size of the third channel gradually increases from the inlet to the inside.

[0009] Wherein, an edge of the third channel on a side close to the second channel is inclined toward the second channel.

[0010] Wherein, the included angle between the first channel and the third channel is any value between 35° and 45°.

[0011] In order to solve the technical problem, the utility model also provides a three-way structure for an endoscope, and the three-way structure for an endoscope includes a three-way tube as described in any one of the above items.

[0012] The three-way structure for endoscope further comprises biopsy forceps, a forceps channel joint, a forceps channel tube, a forceps channel column, a handle shell, a connecting tube, a screw and a nut. The forceps channel tube is sleeved outside the forceps channel joint, and the forceps channel tube and the forceps channel joint are fixed in the second channel; the connecting tube is arranged in the handle shell, and bolt holes are correspondingly provided in the tube body and the connecting tube. The screw passes through the bolt hole to fix the tube body on the connecting tube, and the connecting tube is connected to the handle shell through the nut; the forceps channel column passes through the handle shell and the third channel in sequence, and is fixedly connected to the three-way tube;

[0013] The biopsy forceps passes through the third channel via the forceps channel column and passes through the second channel via the forceps channel joint.

[0014] Compared with the prior art, the three-way tube and the three-way structure for endoscope of the utility model achieve the following beneficial effects: after the biopsy forceps enter the three-way tube, the bending of the biopsy forceps and the contact with the inner wall of the tube are minimized, the biopsy forceps can smoothly enter and exit the channel, the smoothness of the use of the endoscope is enhanced, and the surgical risk is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a cross-sectional diagram of a currently common tee pipe;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the three-way pipe of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the three-way pipe of the utility model;

[0019] Figure 4 It is a schematic diagram of the biopsy forceps entering the three-way tube;

[0020] Figure 5 It is a cross-sectional view of the three-way structure for endoscope of the utility model;

[0021] Figure 6 yes Figure 5 Schematic diagram of the split structure;

[0022] Figure 7 It is a schematic diagram of the installation of the clamp column and the tee pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the utility model embodiment, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] See also Figure 1 , Figure 1This is a schematic diagram of the structure of a common three-way tube. The space inside the tube is divided by dotted lines. The third channel is used for the biopsy forceps to enter, enter the second channel through the first channel, and pass out from the second channel. The first channel is connected to the second channel and the third channel respectively, and the second channel and the third channel are not connected. The biopsy forceps will bend downward at the connection between the three, and the side wall of the biopsy forceps will abut against the inner wall of the tube, generating friction during movement. Due to the abrupt entity at the connection below the third channel, the biopsy forceps bend at a large angle here, causing the biopsy forceps to get stuck or even stuck in the process of entering and exiting the three-way tube, which has a significant adverse effect on the doctor's operation of the endoscope and the safety of the patient.

[0027] See also Figures 2 to 7 , Figure 2 It is a schematic diagram of the structure of the three-way pipe of the utility model, and the three-way pipe includes a pipe body 1, and a first channel 11, a second channel 12 and a third channel 13 are arranged in the pipe body 1. The first channel 11 and the second channel 12 are coaxially arranged, and the third channel 13 is arranged between the first channel 11 and the second channel 12. The angle between the third channel 13 and the first channel 11 is an acute angle, and the extension direction of the third channel 13 is toward the second channel 12. The first channel 11, the second channel 12 and the third channel 13 are all connected.

[0028] The present application removes the abrupt solid parts in the three-way tube, so that the first channel 11, the second channel 12 and the third channel 13 are all connected, especially the third channel 13 is connected with the second channel 12, so that the biopsy forceps entering through the third channel 13 and passing through the second channel 12 can reduce the bending amplitude at the channel connection, and most of the biopsy forceps can directly enter the second channel 12 from the third channel 13 without having to pass through the first channel 11 and then enter the second channel 12, thereby minimizing the contact between the biopsy forceps and the inner wall of the tube body 1, achieving smooth entry and exit of the biopsy forceps in the channel, enhancing the smoothness of endoscope use and reducing surgical risks.

[0029] In the present application, the extension line of the third channel 13 intersects with the second channel 12, thereby limiting the distance and angle between the third channel 13 and the second channel 12, and trying to keep the angle between the third channel 13 and the central axis of the first channel 11 and the second channel 12 within a smaller range, thereby ensuring the smoothness of the biopsy forceps entering and exiting the three-way tube.

[0030] In the present application, the cross-sectional size of the third channel 13 gradually increases from the entrance to the inside. Specifically, the edge of the third channel 13 on the side close to the second channel 12 is inclined toward the second channel 12. The cross-sectional shape of the third channel 13 is trumpet-shaped, inclined toward the second channel 12, and the edge is smooth. In this way, the biopsy forceps can be minimized from bending in the tube body 1 to avoid abutment with the inner wall of the tube body 1.

[0031] In the present application, the angle between the first channel 11 and the third channel 13 is any value between 35° and 45°. Figure 7 , the angle between the two is α. When the angle between the two is too large, the angle between the third channel 13 and the second channel 12 will decrease, and the bending amplitude of the biopsy forceps in the three-way pipe will increase, affecting the smoothness during use. When the angle between the two is too small, the wall thickness between the two will be too thin, affecting the stability during use. Therefore, it is best to set the angle between the first channel 11 and the third channel 13 to within 35°-45°.

[0032] In order to solve the technical problem, the utility model also provides a three-way structure for an endoscope, and the three-way structure for an endoscope includes the three-way tube mentioned above.

[0033] See also Figures 5 to 7 In the present application, the three-way structure for endoscope also includes biopsy forceps 2, a forceps channel joint 3, a forceps channel tube 4, a forceps channel column 5, a handle shell 6, a connecting tube 7, a screw 8 and a nut 9. The forceps channel tube 4 is sleeved outside the forceps channel joint 3. The forceps channel tube 4 and the forceps channel joint 3 are fixed in the second channel 12. The forceps channel joint 3 and the forceps channel tube 4 are used for the forceps channel to enter and exit the three-way structure for endoscope. The connecting tube 7 is arranged in the handle shell 6 and is used to fix the three-way tube in the handle. The tube body 1 and the connecting tube 7 are correspondingly provided with bolt holes 14. The screw 8 passes through the bolt hole 14 to fix the tube body 1 on the connecting tube 7, so that the two are fixedly connected by the screw 8, and the connecting tube 7 is connected to the handle shell 6 through the nut 9. The forceps channel column 5 passes through the handle shell 6 and the third channel 13 in turn and is fixedly connected to the three-way tube. The biopsy forceps 2 passes through the third channel 13 through the forceps channel column 5 and passes out from the second channel 12 through the forceps channel joint 3.

[0034] By using the three-way tube and the three-way structure for an endoscope of the utility model, after the biopsy forceps enter the three-way tube, the bending of the biopsy forceps and the contact with the inner wall of the tube body are minimized, so that the biopsy forceps can smoothly enter and exit the channel, the smoothness of the use of the endoscope is enhanced, and the surgical risk is reduced.

[0035] The above description is only an implementation method of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present utility model.

Claims

1. A three-way pipe, characterized in that: The three-way pipe comprises a pipe body, and a first channel, a second channel and a third channel are arranged in the pipe body; The first channel and the second channel are coaxially arranged, the third channel is arranged between the first channel and the second channel, the angle between the third channel and the first channel is an acute angle, and the first channel, the second channel and the third channel are all connected.

2. The three-way pipe according to claim 1, characterized in that: An extension line of the third channel intersects with the second channel.

3. The tee pipe according to claim 2, characterized in that: The cross-sectional size of the third channel gradually increases from the inlet to the inside.

4. The tee pipe according to claim 3, characterized in that: An edge of the third channel on a side close to the second channel is inclined toward the second channel.

5. The three-way pipe according to any one of claims 1 to 4, characterized in that: The included angle between the first channel and the third channel is any value between 35° and 45°.

6. A three-way structure for an endoscope, characterized in that: The three-way structure for an endoscope comprises a three-way tube according to any one of claims 1-5.

7. The three-way structure according to claim 6, characterized in that: The three-way structure for endoscope also includes biopsy forceps, a forceps channel joint, a forceps channel tube, a forceps channel column, a handle shell, a connecting tube, a screw and a nut. The forceps channel tube is sleeved outside the forceps channel joint, and the forceps channel tube and the forceps channel joint are fixed in the second channel; the connecting tube is arranged in the handle shell, and the tube body and the connecting tube are correspondingly provided with bolt holes, and the screw passes through the bolt hole to fix the tube body on the connecting tube, and the connecting tube is connected to the handle shell through the nut; the forceps channel column passes through the handle shell and the third channel in sequence, and is fixedly connected to the three-way tube; The biopsy forceps passes through the third channel via the forceps channel column and passes through the second channel via the forceps channel joint.

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