Bendable thoracoscope kit with straight working channel

Abstract

A bendable thoracoscope kit with a straight working channel, comprising a hard biopsy forceps (100) and a bendable thoracoscope (200) having a straight working channel. The hard biopsy forceps (100) is provided with a forceps head (101), an elastic guide rod section (102), and a hard guide rod section (103), and the forceps head (101) is connected to a first end of the hard guide rod section (103) by means of the elastic guide rod section (102). An endoscope tube of the thoracoscope (200) comprises a hard tube section (201) and a soft tube section (202), and a rear end of the soft tube section (202) is connected to a front end of the hard tube section (201). The forceps head (101), the elastic guide rod section (102), and the hard guide rod section (103) are movably mounted in the endoscope tube, the elastic guide rod section (102) at least partially coincides with the soft tube section (202), and the soft tube section (202) can synchronously bend along with the elastic guide rod section (102) under the action of a control mechanism, so as to achieve steering of the forceps head (101). The thoracoscope kit improves the diagnosis and treatment efficiency of the bendable thoracoscope (200).

Description

A straight working channel flexible thoracoscopic kit Technical Field

[0001] The present application belongs to the technical field of thoracoscopy, and in particular relates to a thoracoscopy kit with a straight working channel and a flexible structure. Background Art

[0002] The pleural cavity is a closed, potential space formed by the transition of the visceral and parietal pleura at the root of the lung. It is composed of the visceral pleura, which adheres closely to the surface of the lung, and the parietal pleura, which adheres closely to the inner wall of the thorax. Under normal circumstances, a thin layer of fluid covers the surface of the visceral and parietal pleura, which acts as a lubricant during breathing. Any factor that causes excessively rapid formation or slow absorption of fluid in the pleural cavity results in a pleural effusion, which can affect lung ventilation and hemodynamic stability. Pleural effusions can be caused by lung, pleural, or extrapulmonary diseases and medications. Pleural effusions are a common complication of various diseases, and their etiology is challenging to diagnose.

[0003] Medical thoracoscopy (also known as pleuroscopy) is an invasive procedure that involves inserting a video bronchoscope, rigid or combined rigid-flexible (semi-rigid) thoracoscope, or other instruments through the chest wall and intercostal space into the pleural cavity to perform biopsy or treatment of intrathoracic lesions under direct visualization. Studies have shown that the sensitivity of medical thoracoscopy for diagnosing MPE is 92.6% to 97% and the specificity is 99% to 100%. Currently, pleural biopsy histopathology under medical thoracoscopy is the gold standard for diagnosing unexplained pleural effusions. Medical thoracoscopy can also provide endoscopic evidence for some undiagnosed pleural effusions, such as those caused by rheumatoid arthritis, cirrhosis, or pancreatitis, as well as rare causes such as amyloidosis or sarcoidosis.

[0004] There are two types of medical thoracoscopes: rigid thoracoscopes and flexible thoracoscopes.

[0005] Among them, the existing rigid medical thoracoscope requires two holes to be drilled in the chest wall, which causes great harm to the patient. In addition, the rigid medical thoracoscope is a rigid tubular structure as a whole. After being inserted into the lesion site of the human body, the operation of adjusting the angle is complicated, which brings inconvenience to the operator. Moreover, the angle adjustment range is limited, and sometimes it is impossible to reach the lesion to obtain tissue block samples, which has certain limitations.

[0006] Existing flexible thoracoscopes can only be used with flexible biopsy tools, such as flexible biopsy forceps, for pleural biopsy. This biopsy performance is significantly lower than that of rigid thoracoscopes using rigid biopsy tools, as demonstrated by peer-reviewed research. Flexible biopsy forceps are entirely flexible and extend through the side of the flexible thoracoscope, resulting in low biopsy performance, small tissue blocks, severe compression and deformation of tissue structures, lengthy procedures, and difficulty obtaining some tissues, leading to limited success rates and quality.

[0007] Based on the above analysis, the biopsy performance of existing medical thoracoscopy still cannot meet the actual clinical needs, which is an important technical problem faced by clinicians.

[0008] Summary of the Invention

[0009] In view of the above analysis, an embodiment of the present invention aims to provide a straight working channel flexible thoracoscope kit to solve the problem that the biopsy performance of existing medical thoracoscopes still cannot meet actual clinical needs.

[0010] The object of the present invention is achieved like this:

[0011] A straight working channel flexible thoracoscopic kit comprising:

[0012] A rigid biopsy forceps comprises a forceps head, an elastic guide rod section, and a rigid guide rod section. The forceps head is connected to a first end of the rigid guide rod section via the elastic guide rod section. The second end of the rigid guide rod section is connected to a first control mechanism and a second control mechanism. The first control mechanism is configured to control the opening and closing of the forceps head; the second control mechanism is configured to control the bending of the elastic guide rod section to achieve steering of the forceps head.

[0013] The thoracoscope comprises an endoscope tube having a hollow channel extending in an axial direction; the endoscope tube comprises a hard tube section and a soft tube section, the rear end of the soft tube section being connected to the front end of the hard tube section;

[0014] The clamp head, the elastic guide rod section and the hard guide rod section are movably installed in the hollow channel, and the elastic guide rod section and the hose section at least partially overlap, and the hose section can bend synchronously with the elastic guide rod section.

[0015] Furthermore, the second control mechanism includes a bending control wire, one end of which is connected to the clamp seat of the clamp head, and the other end is located at the control end of the hard biopsy forceps. By driving the bending control wire, the elastic guide rod segment is bent, and then the clamp head is turned.

[0016] Furthermore, the elastic guide rod section has a first length, the hose section has a second length, and the first length is greater than the second length.

[0017] Furthermore, the first length is 1.5-2 times the second length.

[0018] Furthermore, the elastic guide rod segment and the hard guide rod segment are an integrated structure, and the elastic guide rod segment is a spiral spring tube cut by laser.

[0019] Furthermore, the helical spring tube has a pitch, and the pitch decreases from the middle to both ends of the helical spring tube.

[0020] Furthermore, the pliers head includes a pliers seat, a first pliers blade and a second pliers blade, and the pliers seat is fixedly connected to the elastic guide rod section; the first pliers blade and the second pliers blade can be opened and closed on the pliers seat, and when the first pliers blade and the second pliers blade are opened, a receiving space for accommodating tissue is formed.

[0021] Furthermore, a first row of teeth is provided on the first pliers piece, and a first end tooth is provided at the end of the first row of teeth; a second row of teeth is provided on the second pliers piece, and a second end tooth is provided at the end of the second row of teeth; the longitudinal cross-sections of the first end tooth and the second end tooth are both triangular, the vertex angle of the first end tooth has a first angle bisector, and the vertex angle of the second end tooth has a second angle bisector; the angle between the first pliers piece and the second pliers piece has a third angle bisector; when the first pliers piece and the second pliers piece are fully opened, the angles between the first angle bisector, the second angle bisector and the third angle bisector are all α, 0°≤α≤5°.

[0022] Furthermore, a first accommodating space is set in the middle of the first forceps, and the first row of teeth is arranged around the first accommodating space; a second accommodating space is set in the middle of the second forceps, and the second row of teeth is arranged around the second accommodating space; after the first forceps and the second forceps are bitten, the first accommodating space and the second accommodating space together constitute an accommodating space for accommodating tissue.

[0023] Furthermore, at least one of the first pliers blade and the second pliers blade is provided with a drainage hole, and the drainage hole is communicated with the accommodating space.

[0024] Furthermore, a plug is provided at the front end of the hose section, and a camera and a light source lamp are provided at the front end of the plug.

[0025] Furthermore, the thoracoscope also has an operating body, which has a shell, a mounting port is provided at the bottom of the shell, and the endoscope tube is sealed and connected to the mounting port; a biopsy channel opening is provided at the top center of the shell, and the center line of the biopsy channel opening coincides with the axis of the hard tube section.

[0026] Furthermore, a third control mechanism is provided on the operating body, and the third control mechanism is configured to control the normal operation of the thoracoscope.

[0027] Furthermore, a mounting bracket is provided in the lower space of the shell, and a catheter is passed through the interior of the mounting bracket; a through hole 1 is provided at the bottom of the plug along its length direction, and the through hole is connected to the hollow channel of the endoscope tube; one end of the endoscope tube is connected to the through hole, and the other end is connected to the catheter.

[0028] Furthermore, the biopsy channel opening at the top of the shell is provided with a mounting head with a hollow structure, and the top opening of the mounting head is detachably provided with a sealing plug.

[0029] Furthermore, a fastening frame is provided in the internal space of the shell, an adjusting disk is fixed on the fastening frame, a guide wire is wound around the adjusting disk, both ends of the guide wire are connected to the plug, the top of the fastening frame extends to the upper space of the shell, and a handle is provided on the outside of the shell, the handle is connected to the adjusting disk, and the guide wire can be retracted and extended by rotating the adjusting disk with the handle, thereby controlling the bending of the hose section.

[0030] Furthermore, a hose is connected to the side wall of the mounting head, and the hose is connected to an external pump body for extracting foreign matter.

[0031] Furthermore, a data interface is provided on the operating body, and the data interface is connected to a computer via a data cable, and the data image of the operating process is transmitted to the computer via the data cable.

[0032] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0033] a) In the straight working channel flexible thoracoscopic kit provided by the present invention, the plug-in portion of the rigid biopsy forceps head includes an elastic guide rod segment and a rigid guide rod segment, and the endoscope tube of the thoracoscope includes a rigid tube segment and a flexible tube segment. By controlling the bending of the elastic guide rod segment, the flexible tube segment is synchronously bent. This allows for convenient and quick adjustment of the angle of the forceps head, resulting in a larger tissue block sample and an improved success rate for obtaining pleural tissue.

[0034] b) The straight working channel flexible thoracoscopic kit provided by the present invention has a through-type biopsy channel with an opening at the center of the top of the operating body. On the one hand, this allows hard biopsy forceps and therapeutic tools to pass through the front flexible thoracoscopic body, thereby improving the ability to grasp diseased tissue during biopsy and treatment; on the other hand, it ensures better coaxiality between the flexible hard biopsy forceps and the scope body, reducing the impact of the operator's wrist rotation to adjust the thoracoscopic body on the operation of the flexible hard biopsy forceps; and it has the advantage of less trauma to the single-port, and has better biopsy and treatment effects than traditional hard tools.

[0035] c) The straight working channel flexible thoracoscopic kit provided by the present invention has a structure in which, when the first and second blades of the forceps are fully opened, the outermost teeth of at least one blade can be inserted into the tissue at a vertical or approximately vertical angle, thereby improving the efficiency and effectiveness of tissue acquisition.

[0036] d) The straight working channel flexible thoracoscope kit provided by the present invention is compatible with both flexible biopsy / therapy instruments and rigid biopsy / therapy instruments, allowing both to pass through. Its operation is similar to that of a traditional flexible thoracoscope, making it easy to learn and master. The addition of rigid biopsy / therapy instruments makes its biopsy and treatment performance comparable to that of a rigid thoracoscope, compensating for the inefficiencies of both flexible thoracoscopes and flexible biopsy / therapy instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0038] FIG1 is a schematic structural diagram of a thoracoscopic kit with a straight working channel and a flexible structure provided by the present invention;

[0039] FIG2 is a schematic diagram of a straight working channel flexible thoracoscopic kit provided by the present invention, wherein the front end is in a bent state;

[0040] FIG3 is a schematic structural diagram of a thoracoscope provided by the present invention;

[0041] FIG4 is a schematic structural diagram of an unbent flexible tube section of a thoracoscope provided by the present invention;

[0042] FIG5 is a schematic structural diagram of a curved hose section of a thoracoscope provided by the present invention;

[0043] FIG6 is an exploded schematic diagram of an operating body of a thoracoscope provided by the present invention;

[0044] FIG7 is an exploded schematic diagram of an operating body of another thoracoscope provided by the present invention;

[0045] FIG8 is a schematic structural diagram of the hard biopsy forceps provided by the present invention;

[0046] FIG9 is a schematic diagram of a partial structure of the hard biopsy forceps provided by the present invention;

[0047] FIG10 is a schematic diagram of the structure of the hard biopsy forceps head provided by the present invention.

[0048] Reference numerals: 100 - rigid biopsy forceps; 101 - forceps head; 1011 - forceps base; 1012 - first forceps blade; 1012a - first end tooth; 1013 - second forceps blade; 1013a - second end tooth; 102 - elastic guide rod segment; 103 - rigid guide rod segment; 104 - bending control wire; 105 - pull ring; 106 - first control mechanism; 200-thoracoscopic device; 201-rigid tube section; 202-flexible tube section; 203-plug; 2031-through hole; 204-camera; 205-light source; 206-operating body; 207-housing; 2071-first housing; 2072-second housing; 208-mounting frame; 209-catheter; 210-mounting head; 211-sealing plug; 212-fastening frame; 213-adjusting disk; 214-guide wire; 215-handle; 216-flexible tube; 217-data interface; 218-first button; 219-second button. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in this disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0050] In the accompanying drawings, the sizes and relative sizes of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence may be performed in a different order than described. For example, two processes described in succession may be performed substantially simultaneously or in a reverse order from the described order. In addition, the same reference numerals represent the same components.

[0051] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0052] A specific embodiment of the present invention, as shown in Figures 1 to 10, discloses a straight working channel flexible thoracoscopic kit that can be used for the diagnosis and treatment of pleural diseases, including a hard biopsy forceps 100 and a thoracoscope 200; the hard biopsy forceps 100 has a forceps head 101 and a plug-in portion, the forceps head 101 is connected to the end of the plug-in portion, the plug-in portion includes a hard main body portion and a bendable portion located at the front end, the hard main body portion cannot be bent, and only a small section at the front end can be bent, specifically, the plug-in portion includes an elastic guide rod segment 102 and a hard guide rod segment 103, the elastic guide rod segment 102 and the hard guide rod segment 103 together constitute the plug-in portion, the forceps head 101 is connected to the first end of the hard guide rod segment 103 through the elastic guide rod segment 102, and the second end of the hard guide rod segment 103 is connected to the second end of the hard guide rod segment 103. A control mechanism 106 and a second control mechanism, the first control mechanism 106 is configured to control the opening and closing of the clamp head 101; the second control mechanism is configured to control the bending of the elastic guide rod segment 102 to realize the turning of the clamp head 101; the thoracoscope 200 is a straight working channel flexible thoracoscope, the thoracoscope 200 has an endoscope tube, the endoscope tube has a hollow channel extending in the axial direction; the endoscope tube includes a hard tube segment 201 and a soft tube segment 202, the rear end of the soft tube segment 202 is connected to the front end of the hard tube segment 201; wherein, the clamp head 101, the elastic guide rod segment 102 and the hard guide rod segment 103 are movably installed in the hollow channel, and the elastic guide rod segment 102 and the soft tube segment 202 at least partially overlap, and the soft tube segment 202 can bend synchronously with the elastic guide rod segment 102.

[0053] During implementation, the forceps head 101 and the plug-in part of the hard biopsy forceps 100 are installed into the endoscope tube of the thoracoscope 200. The operator sends the forceps head 101 into the designated position in the patient's body. According to the position to be treated, the second control mechanism is used to control the bending of the elastic guide rod segment 102 to bend the forceps head 101 toward the target position. During this process, the operator can rotate the hard biopsy forceps 100 and the thoracoscope 200 as a whole to accurately rotate the forceps head 201 to the target position; after the forceps head is adjusted to the designated position, the first control mechanism is used to close the forceps head 101 to remove the tissue at the target position.

[0054] In this embodiment, the thoracoscope 200 further comprises an operating body 206, to which an endoscope tube is connected. The operating body 206 comprises a housing 207, with a mounting port provided at the bottom center of the housing 207, to which the endoscope tube is sealingly connected. A biopsy channel opening is provided at the top center of the housing 207, the centerline of which coincides with the axis of the rigid tube section 201. This arrangement allows the head 101 and the connector of the rigid biopsy forceps 100 to be coaxially inserted into the operating body 206 and the endoscope tube of the thoracoscope 200, ensuring better coaxiality between the rigid biopsy forceps 100 and the operating body 206 of the thoracoscope 200, thereby reducing the impact of the operator's wrist rotation on the operation of the rigid biopsy forceps 100.

[0055] In this embodiment, a third control mechanism is provided on the operating body 206, and the third control mechanism is configured to control the normal operation of the thoracoscope 200. The first control mechanism 106 for controlling the opening and closing of the clamp head 101 and the third control mechanism for controlling the normal operation of the thoracoscope 200 can be implemented using existing technologies or by slightly modifying existing technologies, and will not be described in detail here.

[0056] In this embodiment, the function of the second control mechanism is to control the bending of the elastic guide rod segment 102. Any structure that can achieve the bending of the elastic guide rod segment 102 is acceptable. The second control mechanism of this embodiment includes, but is not limited to, the following structures: the second control mechanism includes a bending control wire 104, one end of which is connected to the clamp seat of the clamp head 101, and the other end is located at the control end of the rigid biopsy forceps 100. By driving the bending control wire 104, the bending of the elastic guide rod segment 102 is achieved, thereby achieving the steering of the clamp head 101. Optionally, the bending control wire 104 located at the control end of the rigid biopsy forceps 100 is connected to a pull ring 105 to facilitate the operator's pulling. Alternatively, the bending control wire 104 is wound on a rotating winding mechanism, and the pulling and releasing of the bending control wire 104 are achieved by rotating counterclockwise and clockwise.

[0057] In this embodiment, both the elastic guide rod segment 102 and the hose segment 202 have specific lengths. The elastic guide rod segment 102 has a first length, and the hose segment 202 has a second length. The specific lengths of the two are set according to actual needs. Optionally, the first length is greater than the second length, with the first length being 1.5-2 times the second length. It should be noted that during actual operation, the front end of the elastic guide rod segment 102 may or may not extend beyond the plug 203, as long as the pliers head 101 can extend beyond the plug 203. Figure 2 only illustrates the case where the front end of the elastic guide rod segment 102 extends beyond the plug 203.

[0058] In this embodiment, the elastic guide rod segment 102 and the hard guide rod segment 103 are an integrated structure, which is made by laser cutting or 3D printing. Exemplarily, the elastic guide rod segment 102 is a coil spring tube cut by laser. During laser cutting, the elastic guide rod segment 101 is cut out from the front of a whole hard guide rod. One end of the elastic guide rod segment 101 is the hard guide rod segment 103, and a small section of the hard guide rod segment is left at the other end to facilitate connection with the clamp seat 1011 of the clamp head; cutting is performed along the outer circumference of the hard guide rod according to the thread trajectory, and the structure of the obtained coil spring tube is similar to that of a spring. In one optional embodiment, the coil spring tube has a pitch, and the pitch decreases from the middle of the coil spring tube to both ends. The pitch of the middle part of the coil spring tube is large, which makes it easier to undergo elastic deformation, making the bending of the clamp head more flexible; at the same time, the pitch of the two ends is small, and the difficulty of elastic deformation becomes greater. This not only ensures the smooth movement of the clamp head in the tissue, but also when adjusting the position of the clamp head, the required control force is small at first and then large. This can more accurately control the bending position of the clamp head and prevent the clamp head position adjustment from being too flexible and unable to accurately align with the required sampling position, which in turn leads to low acquisition efficiency.

[0059] In this embodiment, the forceps head 101 includes a forceps base 1011, a first forceps blade 1012 and a second forceps blade 1013. The forceps base 1011 is fixedly connected to the elastic guide rod section 102; the first forceps blade 1012 and the second forceps blade 1013 can be opened and closed on the forceps base 1011, and when the first forceps blade 1012 and the second forceps blade 1013 are opened, a storage space for accommodating tissue is formed.

[0060] In one embodiment, a first row of teeth is provided on the first forceps 1012, and a first end tooth 1012a is provided at the end of the first row of teeth; a second row of teeth is provided on the second forceps 1013, and a second end tooth 1013a is provided at the end of the second row of teeth; when the first forceps 1012 and the second forceps 1013 are fully opened, the outermost end teeth of at least one of the forceps can be inserted into the tissue at a vertical or approximately vertical angle, which can improve the efficiency and effect of tissue acquisition.

[0061] Exemplarily, the longitudinal cross-sections of the first end tooth 1012a and the second end tooth 1013a are both triangular, the vertex angle of the first end tooth 1012a has a first angle bisector, and the vertex angle of the second end tooth 1013a has a second angle bisector; the angle between the first pliers 1012 and the second pliers 1013 has a third angle bisector; when the first pliers 1012 and the second pliers 1013 are fully opened, the angles between the first angle bisector, the second angle bisector, and the third angle bisector are all α, 0°≤α≤5°. This structural arrangement allows the outermost end tooth 1012a of the first row of teeth and the outermost second end tooth 1013a of the second row of teeth to be inserted into the tissue at a vertical or approximately vertical angle, thereby improving the efficiency and effectiveness of tissue acquisition.

[0062] Furthermore, the first row of teeth on the first pliers 1012 and the second row of teeth on the second pliers 1013 are arranged in a uniform U-shape or annular arrangement; a concave first accommodating space is provided in the middle of the first pliers 1012, and the first row of teeth are arranged around the first accommodating space; a concave second accommodating space is provided in the middle of the second pliers 1013, and the second row of teeth are arranged around the second accommodating space; after the first pliers 1012 and the second pliers 1013 are engaged, all or part of the teeth in the first row of teeth and the second row of teeth are seamlessly engaged, and the first accommodating space and the second accommodating space together constitute an accommodating space for accommodating tissue. This can completely cut the tissue, preventing tissue tearing during the removal process, which could cause secondary damage.

[0063] Furthermore, at least one of the first forceps 1012 and the second forceps 1013 is provided with a drainage hole, which is connected to the accommodating space. That is, a first drainage hole is provided on the first forceps, and the first drainage hole is connected to the first accommodating space; and / or a second drainage hole is provided on the second forceps, and the second drainage hole is connected to the second accommodating space. This structural setting can drain blood and water in the clamped tissue, clamp more tissue, and improve the clamping efficiency.

[0064] In this embodiment, a plug 203 is provided at the front end of the hose section 202 , and a camera 204 and a light source lamp 205 are provided at the front end of the plug 203 . The camera 204 and the light source lamp 205 are embedded in the bottom end surface of the plug 203 .

[0065] In one optional embodiment, the housing 207 includes a first housing 2071 , a second housing 2072 is fixedly connected to the top of the first housing 2071 , and the second housing 2072 is formed by a box body and a box cover. The bottom of the first housing 2071 is fixedly connected to the hard pipe section 201 .

[0066] In this embodiment, a mounting bracket 208 is disposed within the first housing 2071 of the housing 207. A catheter 209 extends through the interior of the mounting bracket 208. A through hole 2031 is provided along the bottom of the plug 203 along its length, communicating with the hollow channel of the endoscope tube. One end of the endoscope tube communicates with the through hole, while the other end communicates with the catheter 209. The connector of the rigid biopsy forceps 100 is coaxially inserted into the hollow channel of the catheter 209 and the endoscope tube. The biopsy channel opening is located at the top of the second housing 2072. A hollow mounting head 210 is provided at the top of the mounting head 210. A sealing plug 211 is removably attached to the top opening of the mounting head 210. The top opening of the mounting head 210 coincides with the centerline of the biopsy channel opening. Optionally, the sealing plug 211 is threadedly connected to the top of the mounting head 210.

[0067] In this embodiment, the flexible tube section 202 of the thoracoscope 200 is capable of synchronously bending with the elastic guide rod section 102 of the rigid biopsy forceps 100, which is passive bending. The bending angle of the flexible tube section 202 is mainly driven by the elastic guide rod section 102. In actual operation, it has been found that it is sometimes difficult to achieve precise adjustment of the angle of the forceps head by simply bending the elastic guide rod section 102. Therefore, in an optional implementation of this embodiment, the flexible tube section 202 can also be actively bent. In this way, it can cooperate with the bending of the elastic guide rod section 102 to achieve more precise adjustment of the bending angle of the forceps head. Specifically, the internal space of the shell 207 is also provided with a fastening frame 212, on which an adjusting disk 213 is fixedly connected, and a guide wire 214 is wound around the adjusting disk 213. Both ends of the guide wire 214 are connected to the plug 203, and the bottom end of the fastening frame 212 is fixedly connected to the interior of the first shell 2071, and the top of the fastening frame 212 extends to the internal space of the second shell 2072 above the shell 207. A handle 215 is provided on the outside of the shell 207, and the handle 215 is connected to the adjusting disk 213. The adjusting disk 213 is rotated by the handle 215 to retract and extend the guide wire 214, thereby controlling the bending of the hose section 202. In this way, the hose section 202 can also be actively bent to assist the elastic guide rod section 102 of the hard biopsy forceps in bending. The bending of the hose section 202 cooperates with the bending of the elastic guide rod section 102, so that the angle adjustment range of the forceps head is wider and more precise.

[0068] In this embodiment, a hose 216 is also connected to the side wall of the mounting head 210. The hose 216 is connected to an external pump body. Foreign matter is sucked into the conduit 209 through the through hole by negative pressure adsorption and discharged by the hose 216, thereby discharging the foreign matter.

[0069] In this embodiment, the operating body 206 is further provided with a data interface 217, which is provided on one side of the second shell 2072. The data interface 217 is connected to a computer via a data cable, and transmits data images of the operating process to the computer via the data cable.

[0070] In one optional embodiment, the third control mechanism includes a first button 218 and a second button 219, which are located on the front surface of the second housing 2072. The first button 218 is used to take real-time photos of the interior of the chest cavity to facilitate locating the foreign body, and the second button 219 is used to store the captured data for easy access and review.

[0071] Compared with the prior art, the straight working channel flexible thoracoscopic kit provided in this embodiment can achieve at least one of the following beneficial effects:

[0072] 1. The plug-in part of the rigid biopsy forceps head includes an elastic guide rod section and a rigid guide rod section. The endoscope tube of the thoracoscope includes a rigid tube section and a flexible tube section. By controlling the bending of the elastic guide rod section, the flexible tube section can be bent synchronously. This allows for convenient and quick adjustment of the angle of the forceps head, allowing for larger tissue block samples to be obtained, thereby improving the diagnostic and treatment performance under flexible thoracoscopy.

[0073] 2. The biopsy channel of the thoracoscope is a through-type design, with its opening at the center of the top of the operating body. On the one hand, it allows rigid biopsy forceps and therapeutic tools to pass through the front flexible thoracoscope, improving the ability to grasp diseased tissue during biopsy and treatment; on the other hand, it ensures better coaxiality between the flexible rigid biopsy forceps and the scope body, reducing the impact of the operator's wrist rotation to adjust the thoracoscope body on the operation of the flexible rigid biopsy forceps; and it has the advantage of less trauma to the single-port, and has better biopsy and treatment effects than traditional rigid tools.

[0074] 3. The straight working channel flexible thoracoscope is compatible with both flexible biopsy / therapy instruments and rigid biopsy / therapy instruments, allowing both to pass through. Its operating procedures are similar to those of a traditional flexible thoracoscope, making it easy to learn and master. The addition of rigid biopsy / therapy instruments makes its biopsy and treatment performance comparable to that of a rigid thoracoscope, compensating for the inefficiencies of both flexible thoracoscopes and flexible biopsy / therapy instruments.

[0075] 4. When the first and second blades of the forceps are fully opened, the outermost teeth of at least one blade can be inserted into the tissue at a vertical or approximately vertical angle, which can improve the efficiency and effect of tissue acquisition.

[0076] 5. The flexible tube section of the thoracoscope can also be actively bent, so that it can cooperate with the bending of the elastic guide rod section to achieve more precise adjustment of the bending angle of the clamp head.

[0077] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of this application. It should be understood that the above description is only the specific implementation methods of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A straight working channel flexible thoracoscopic kit, characterized in that: include: A hard biopsy forceps, the hard biopsy forceps comprising a forceps head, an elastic guide rod segment and a hard guide rod segment, the forceps head is connected to a first end of the hard guide rod segment through the elastic guide rod segment, the second end of the hard guide rod segment is connected to a first control mechanism and a second control mechanism, the first control mechanism is configured to control the opening and closing of the forceps head; the second control mechanism is configured to control the bending of the elastic guide rod segment to achieve the turning of the forceps head; A thoracoscope, wherein the thoracoscope has an endoscope tube, wherein the endoscope tube has a hollow channel extending in an axial direction; the endoscope tube comprises a hard tube section and a soft tube section, wherein the rear end of the soft tube section is connected to the front end of the hard tube section; The clamp head, the elastic guide rod segment and the hard guide rod segment are movably installed in the hollow channel, and the elastic guide rod segment at least partially overlaps with the hose segment, and the hose segment can bend synchronously with the elastic guide rod segment.

2. The straight working channel flexible thoracoscopic kit according to claim 1, characterized in that: The second control mechanism includes a bending control wire, one end of which is connected to the clamp seat of the clamp head, and the other end is located at the control end of the hard biopsy forceps. The bending control wire is driven to achieve the bending of the elastic guide rod segment, thereby achieving the steering of the clamp head.

3. The straight working channel flexible thoracoscopic kit according to claim 2, characterized in that: The elastic guide rod segment and the hard guide rod segment are an integrated structure, and the elastic guide rod segment is a spiral spring tube cut by laser.

4. The straight working channel flexible thoracoscopic kit according to claim 1, characterized in that: The forceps head includes a forceps seat, a first forceps blade and a second forceps blade. The forceps seat is fixedly connected to the elastic guide rod section. The first forceps blade and the second forceps blade are openably arranged on the forceps seat. When the first forceps blade and the second forceps blade are opened, a storage space for accommodating tissue is formed.

5. The straight working channel flexible thoracoscopic kit according to claim 4, characterized in that: The first pliers piece is provided with a first row of teeth, and a first end tooth is provided at the end of the first row of teeth; the second pliers piece is provided with a second row of teeth, and a second end tooth is provided at the end of the second row of teeth; The longitudinal cross-sections of the first end tooth and the second end tooth are both triangular, the vertex angle of the first end tooth has a first angle bisector, and the vertex angle of the second end tooth has a second angle bisector; The angle between the first pliers blade and the second pliers blade has a third angle bisector; When the first pliers blade and the second pliers blade are in a fully opened state, the included angles of the first angle bisector, the second angle bisector and the third angle bisector are all α, and 0°≤α≤5°.

6. The straight working channel flexible thoracoscopic kit according to claim 1, characterized in that: A plug is arranged at the front end of the hose section, and a camera and a light source lamp are arranged at the front end of the plug.

7. The straight working channel flexible thoracoscopic kit according to claim 6, characterized in that: The thoracoscope also has an operating body, which has a shell, a mounting port is arranged at the bottom of the shell, and the endoscope tube is sealingly connected to the mounting port; a biopsy channel opening is arranged at the top center of the shell, and the center line of the biopsy channel opening coincides with the axis of the hard tube section.

8. The straight working channel flexible thoracoscopic kit according to claim 7, characterized in that: A third control mechanism is arranged on the operating body, and the third control mechanism is configured to control the normal operation of the thoracoscope.

9. The straight working channel flexible thoracoscopic kit according to claim 7, characterized in that: A mounting frame is arranged in the lower space of the shell, and a catheter is passed through the interior of the mounting frame; a through hole is arranged at the bottom of the plug along its length direction, and the through hole is connected to the hollow channel of the endoscope tube; one end of the endoscope tube is connected to the through hole, and the other end is connected to the catheter.

10. The straight working channel flexible thoracoscopic kit according to claim 7, characterized in that: The biopsy channel opening at the top of the shell is provided with a mounting head with a hollow structure, and the top opening of the mounting head is detachably provided with a sealing plug.

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