Thoracoscope

Abstract

The thoracoscope provided by the utility model comprises a hard tubular insertion part which is provided with an instrument channel for an instrument to enter; the connecting part is arranged on the base end side of the insertion part and provided with an instrument inlet channel communicated with the instrument channel, and the axis of the instrument inlet channel and the axis of the instrument channel are located on the same straight line; a bending part which is provided on the tip side of the insertion part, has an instrument outlet channel communicating with the instrument channel, and can be bent in at least one direction; the handheld part is arranged on the connecting part and obliquely extends to the radial outer side of the connecting part from the connecting part; the operation part is arranged on the handheld part, is connected with the bending part through a plurality of traction ropes and controls the bending part to bend; the straightening auxiliary mechanism enables the axis of the instrument outlet channel and the axis of the instrument channel to be located on the same straight line. According to the thoracoscope provided by the utility model, most instruments including hard instruments can pass through the instrument channel of the thoracoscope, and the bent part of the thoracoscope can be reliably ensured to be in a straightened state, so that the hard instruments are prevented from damaging the bent part.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a thoracoscope. Background Art

[0002] Thoracoscopic surgery is an invasive procedure in which a thoracoscope is inserted into the pleural cavity through the chest wall and intercostal space to biopsy or treat lesions in the chest cavity under direct vision.

[0003] A commonly used thoracoscope is a semi-flexible endoscope, which has an operating portion, a hand-held portion, an instrument inlet channel, a connecting portion, a hard tubular insertion portion, and a bendable bending portion.

[0004] The operating part includes a bending operating part, a button operating part, etc., which are arranged on the handheld part for doctors and other operators to hold the thoracoscope for easy operation. The bending operating part is used to control the bending of the bending part; the button operating part has multiple buttons with different functions, which are used to realize functions such as suction and image acquisition.

[0005] A connecting part is provided on one side of the handheld part close to the insertion part, that is, the base end side of the insertion part, for connecting the handheld part and the insertion part. An instrument entrance channel is provided on the connecting part, and the instrument enters the instrument channel in the insertion part from the instrument entrance channel.

[0006] A bending portion is provided at the front end side of the insertion portion, and the bending portion can be bent in at least one direction. An instrument outlet channel is provided in the bending portion, and an instrument extends from the instrument outlet channel to enter and exit for biopsy, treatment, and other operations. Of course, the instrument inlet channel, instrument channel, and instrument outlet channel can also be collectively referred to as an instrument channel.

[0007] In addition, in the existing semi-flexible thoracoscope, the axes of the handheld part, the connecting part and the insertion part are in the same straight line, and the rear ends of the insertion part and the connecting part are shielded by the handheld part. Therefore, in order to be able to communicate with the instrument channel of the insertion part, the instrument inlet channel can only be inclined relative to the axis, and there is an angle with the connecting part. As a result, the existing thoracoscope cannot use hard instruments and has great limitations. Its biopsy tools are single, and the efficiency of taking biopsy tissue is low, which brings inconvenience to the operation.

[0008] For such a situation, in the ureteroscope described in CN203763045U, the handheld part is arranged perpendicularly to the insertion part, so that the instrument entrance channel and the instrument channel in the insertion part are parallel to each other, so that the hard instrument can enter the instrument channel. In addition, in the ureteroscope, a rotating handle is arranged on the main body of the ureteroscope, and the rotating handle and the insertion part are arranged on the same straight line. The rotating handle controls the bending of the serpentine mechanism (bending part) located at the front end of the insertion part.

[0009] In addition, when using hard instruments, it is necessary to ensure that the curved portion is in a straightened state to prevent the hard instrument from damaging the curved portion.

[0010] In this regard, CN112040894A describes a scheme in which a curved portion is bent and released (straightened) by a wire to achieve a thinner diameter. The wire has such a degree of straightness that when the wire is inserted into a sheath made of a resin tube and the sheath is in a bent state, the sheath is deformed from the bent state to a nearly straight state by its own restoring force. Utility Model Content

[0011] However, in the ureteroscope of CN208640662U, the hand-held part is arranged perpendicularly to the insertion part, and the rotating handle as the operating part is arranged on the main body of the ureteroscope, that is, the hand-held part and the operating part are arranged separately. Such an arrangement requires the doctor to hold the hand-held part with one hand and operate the operating part with the other hand, which is not in line with the doctor's operating habits of operating a thoracoscope and is not conducive to the doctor's operation.

[0012] In the endoscope of CN112040894A, a straight wire is used to release the bend in order to achieve miniaturization. However, this bend release is not reliable, and the elasticity of the wire itself cannot ensure that the bent portion is in a straight state.

[0013] In addition, for an endoscope that uses a plurality of wires for bending operation, the bending cannot be released only by the elasticity of the wires themselves. In an endoscope that uses a plurality of wires for bending operation, bending and releasing of bending are achieved by changing the length of each wire in the bending portion. If the lengths of the plurality of wires in the bending portion are different, releasing of bending cannot be achieved even if the wires are straight.

[0014] Therefore, in view of the above problems, the purpose of the utility model is to provide a thoracoscope, which improves the existing thoracoscope so that most instruments, including hard instruments, can pass through the instrument channel of the thoracoscope, and can reliably ensure that the curved portion of the thoracoscope is in a straight state, thereby preventing hard instruments from damaging the curved portion of the thoracoscope, and does not change the doctor's operating habits, thereby facilitating the doctor's operation.

[0015] To achieve the above-mentioned purpose, the thoracoscope of the present invention comprises: an insertion portion, which is a hard tubular shape and has an instrument channel for instruments to enter; a connecting portion, which is arranged on the base end side of the insertion portion and has an instrument entrance channel connected to the instrument channel, and the axis of the instrument entrance channel and the axis of the instrument channel are located on the same straight line; a bending portion, which is arranged on the front end side of the insertion portion, has an instrument exit channel connected to the instrument channel and can be bent in at least one direction; a hand-held portion, which is arranged on the connecting portion and extends obliquely from the connecting portion to the radially outer side of the connecting portion; an operating portion, which is arranged on the hand-held portion and is connected to the bending portion through a plurality of traction ropes, and the operating portion controls the bending of the bending portion by operating the traction ropes; and a straightening auxiliary mechanism, which can make the axis of the instrument exit channel and the axis of the instrument channel located on the same straight line.

[0016] Optionally, the straightening assist mechanism includes a plurality of elastic components. When the bending portion is in a straightened state, the elastic components are of free length. The elastic components are arranged on the bending portion. Both ends of the elastic components are respectively fixed on both ends of the bending portion. The elastic components are arranged along the axial direction of the bending portion and adjacent to the traction rope in the bending portion.

[0017] Optionally, the straightening auxiliary mechanism includes a baffle and a plurality of blocks, wherein the baffle is arranged inside the hand-held portion and can move inside the hand-held portion, and has a plurality of through holes for the traction ropes to pass through respectively, and the plurality of blocks are respectively arranged with the traction ropes, and when the bending portion is in a straightened state, the blocks of the plurality of traction ropes all abut against the same side of the baffle.

[0018] Optionally, the operating portion further comprises a connecting rod, one end of which is rotatably fixed to the operating portion, and the other end of which is rotatably fixed to the baffle, and when the bent portion is in a straightened state, the connecting rod is perpendicular to the baffle to support the baffle.

[0019] Optionally, the straightening auxiliary mechanism further includes an elastic member, one end of the elastic member is fixed to the stopper, and the other end of the elastic member is fixed to the baffle, and when the bending portion is in a straightened state, the elastic member is of free length.

[0020] Optionally, there is also a steering tube for changing the movement direction of the traction rope, the traction rope passes through the tube cavity of the steering tube, the steering tube has a first tube portion, a second tube portion and a third tube portion, the first tube portion is parallel to the hand-held portion, the third tube portion is parallel to the connecting portion, and the second tube portion is arc-shaped, connecting the first tube portion and the third tube portion.

[0021] Optionally, the outer layer of the traction rope is covered with a protective tube, the steering tube is a rigid tube, the first tube part is fixed to the hand-held part, and the third tube part is fixed to the protective tube.

[0022] Optionally, there is also a steering member for changing the movement direction of the traction rope, the steering member has a steering member housing, a support frame and a plurality of steering wheels, the support frame has an annular support portion, the support frame is fixed to the steering member housing, the steering wheel is rotatably mounted on the support portion, the traction rope passes through the gaps between the plurality of steering wheels, and the plurality of steering wheels abut against different positions of the traction rope from different directions.

[0023] Optionally, the support frame has a plurality of protrusions, and the plurality of steering wheels and the plurality of protrusions are alternately arranged.

[0024] Optionally, the angle between the hand-held portion and the connecting portion is 15° to 60°.

[0025] According to the thoracoscope of the utility model, most instruments including hard instruments and soft instruments can pass through the instrument channel of the thoracoscope of the utility model, and when using hard instruments, the straightening auxiliary mechanism can reliably ensure that the curved portion of the thoracoscope is in a straightened state, which can prevent the hard instruments from damaging the curved portion of the thoracoscope, and does not change the doctor's operating habits, thereby facilitating the doctor's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or 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 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.

[0027] Figure 1 is a schematic diagram of a thoracoscope of the present utility model;

[0028] Figure 2 A schematic diagram of the operating unit of one embodiment of the present invention;

[0029] Figure 3 It is a simplified diagram of a modified example of the straightening auxiliary mechanism of the utility model;

[0030] Figure 4 for Figure 2 A cross-sectional view of region A;

[0031] Figure 5 A cross-sectional view of a bending portion of another embodiment of a thoracoscope of the present utility model;

[0032] Figure 6 This is a schematic diagram of the installation of the steering tube of the thoracoscope of the present invention;

[0033] Figure 7 It is a schematic diagram of the steering member of the thoracoscope of the present utility model;

[0034] Figure 8 It is a schematic diagram of the installation position of the steering member of the utility model.

[0035] Description of reference numerals:

[0036] 1…operating part; 11…bending operating part; 12…button operating part; 13…traction rope; 131…block; 132…protective tube; 14…rotating wheel; 15…handle; 16…locking rod; 17…baffle; 18…connecting rod; 2…hand-held part; 21…steering tube; 211…first tube part; 212…second tube part; 213…third tube part; 22…fixing part; 23…steering part; 231…steering part housing; 232…support frame; 233…steering wheel; 3…instrument entrance channel; 4…connecting part; 41…tee; 5…insertion part; 6…bending part; 7…elastic member. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the drawings in the present disclosure. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc., are used to define components, only for the convenience of distinguishing the above components, and unless otherwise stated, the above terms have no special meaning and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The following describes in detail the embodiments and modifications of the thoracoscope of the present invention with reference to the accompanying drawings.

[0041] Figure 1 It is a schematic diagram of the thoracoscope of the present utility model.

[0042] like Figure 1 As shown, the thoracoscope of the present invention comprises an operating portion 1, a hand-held portion 2, an instrument inlet channel 3, a connecting portion 4, a hard tubular insertion portion 5, and a bendable bending portion 6.

[0043] The insertion portion 5 has an instrument channel for the instrument to enter. The connection portion 4 is arranged at the base end side of the insertion portion 5, and has an instrument inlet channel connected to the instrument channel. The bending portion 6 is arranged at the front end side of the insertion portion 5, and has an instrument outlet channel connected to the instrument channel, and can be bent in at least one direction.

[0044] In addition, in the thoracoscope of the present invention, the handheld portion 2 is disposed on the connecting portion 4, and extends obliquely from the connecting portion 4 to the radially outer side of the connecting portion 4. The operating portion 1 includes a bending operating portion 11, a key operating portion 12, etc., which are disposed on the handheld portion 2 to control the bending of the bending portion 6. In addition, the axis of the instrument inlet channel and the axis of the instrument channel are located on the same straight line.

[0045] Therefore, according to the thoracoscope of the present invention, since the hand-held portion 2 extends obliquely from the connecting portion 4 to the radially outer side of the connecting portion 4, the axis of the instrument entrance channel and the axis of the instrument channel can be located on the same straight line, and most instruments including hard instruments can pass through the instrument channel of the thoracoscope. In addition, since the operating portion 1 is still arranged on the hand-held portion 2, even if the thoracoscope of the present invention is used, the doctor's operating habits will not be changed, and the doctor's operation can be convenient.

[0046] In addition, if Figure 2-5 As shown, in the thoracoscope of the present invention, the operating part 1 is connected to the bending part 6 through a plurality of traction ropes 13 , and the operating part 1 controls the bending of the bending part 6 by operating the plurality of traction ropes 13 .

[0047] Specifically, in one embodiment of the present invention, Figure 2As shown, the operating part 1 has a rotating wheel 14, a handle 15 fixed on the rotating wheel 14, and a locking rod 16. Figure 3 One end of the traction rope 13 (two in the figure) is fixed to the rotating wheel 14, and the other end is fixed to the bending part 6. The doctor operates the handle 15 and rotates the rotating wheel 14, so that different traction ropes 13 have different lengths in the bending part 6, thereby pulling the bending part 6 to bend in the direction of the traction rope 13 with a shorter length, and the bending state of the bending part 6 can be locked and fixed by the locking rod 16. When the doctor controls the handle 15 to return to the initial position, the different traction ropes 13 have the same length in the bending part 6, so that the bending part 6 is in a straightened state, and the straightened state of the bending part 6 can be locked and fixed by the locking rod 16.

[0048] However, the initial position of the handle 15 needs to be visually confirmed by the doctor. Due to the doctor's line of sight and other reasons, the doctor may mistake a non-initial position of the handle 15 for the initial position and mistakenly believe that the bending portion 6 has been straightened, thereby stopping operating the handle 15, causing a hard instrument to enter the instrument channel and causing damage to the bending portion 6.

[0049] In this regard, Figure 2-5 As shown, in the thoracoscope of the present invention, a straightening auxiliary mechanism is also provided. When the bending portion 6 needs to be in a straightened state, for example, when the operating portion 1 does not operate the traction rope 13 or the doctor releases the handle 15 of the operating portion 1, the straightening auxiliary mechanism can make the axis of the instrument outlet channel in the bending portion 6 and the axis of the instrument channel in the insertion portion 5 be located on the same straight line, that is, the bending portion can be reliably straightened.

[0050] Therefore, when the operating part 1 controls the traction rope 13 and expects the bending part 6 to be in a straightened state, the straightening auxiliary mechanism can ensure that the bending part 6 is fully straightened, thereby preventing the bending part 6 from being damaged due to the doctor's misjudgment of the state of the bending part 6 and the entry of hard instruments into the unstraightened bending part 6.

[0051] Furthermore, if Figure 2 As shown, in one embodiment of the present invention, the straightening auxiliary mechanism includes a baffle 17 and a plurality of baffles 131 .

[0052] Specifically, if Figure 2 As shown, a baffle 17 is provided inside the hand-held portion 2. The baffle 17 has a plurality of through holes for the plurality of traction ropes 13 to pass through respectively. The traction ropes 13 are respectively provided with a stopper 131. When the bending portion 6 is in a straightened state, the stoppers 131 of the plurality of traction ropes 13 are all in contact with the same side of the baffle 17. In addition, the baffle 17 can move inside the hand-held portion 2, so that when the bending portion 6 is bent, the baffle 17 can move with the traction ropes 13 without hindering the bending of the bending portion 6. In addition, although Figure 2-3In the embodiment, the stopper 131 abuts against the lower side of the baffle 17, but the stopper 131 may abut against the upper side of the baffle 17 to obtain the same effect.

[0053] When the doctor operates the handle 15 to leave the initial position, for example, Figure 2 At this time, the traction rope 13 on the left side moves upward, and the traction rope 13 on the right side moves downward. Therefore, the stopper 131 provided on the traction rope 13 on the left side pushes the baffle plate to move upward, while on the other hand, the stopper 131 provided on the traction rope 13 on the right side moves downward together with the traction rope 13 on the right side, and the curved portion is pulled by the traction rope 13 on the left side to bend.

[0054] Furthermore, when the doctor accurately operates the handle 15 to return to the initial position, the stoppers 131 of the plurality of traction ropes 13 are all in contact with the baffle 17 and the curved portion 6 is in a straightened state.

[0055] In addition, due to the doctor's line of sight and other reasons, when the doctor has not accurately returned the handle 15 to the initial position, the doctor can push the baffle 17 so that the blocks 131 of the multiple traction ropes 13 are all in contact with the same side of the baffle 17 to ensure that the bending portion 6 is in a straight state, so that the axis of the instrument outlet channel in the bending portion 6 and the axis of the instrument channel in the insertion portion 5 are located on the same straight line to prevent hard instruments from damaging the bending portion 6.

[0056] Furthermore, in the present invention, the straightening auxiliary mechanism may further include a connecting rod 18. Figure 3 As shown, one end of the connecting rod 18 is rotatably fixed to the rotating wheel 14 of the operating part 1, and the other end of the connecting rod 18 is rotatably fixed to the baffle 17. Preferably, the other end of the connecting rod 18 is rotatably fixed to the center of the baffle 17.

[0057] When the baffle 17 is at the lowest point, that is, the bent portion 6 is in a straight state, the connecting rod 18 is perpendicular to the baffle 17 to support the baffle 17. That is, at this time, the rotating wheel 14, the connecting rod 18, and the baffle 17 are at a dead point and are self-locked with each other.

[0058] Thus, the baffle 17 can be pushed to the lowest point through the connecting rod 18 to ensure that the blocks 131 of the multiple traction ropes 13 are all in contact with the same side of the baffle 17, so that the bending portion 6 is reliably in an extended state, and the extended state of the bending portion 6 can be locked to prevent the bending portion 6 from being damaged by hard instruments.

[0059] Furthermore, if Figure 4 As shown, the straightening auxiliary mechanism further includes an elastic member 7. When the bending portion 6 is in the straightened state, the elastic member 7 is of free length.

[0060] When the bending portion 6 is in the straight state, the elastic member 7 does not deform and does not generate elastic force, but when the bending portion 6 is in the bent state, the elastic member 7 deforms to generate elastic force, and applies the elastic force to the bending portion 6 or the traction rope 13. Since the elastic force generated by the elastic member 7 is much greater than the resistance generated by the friction when the traction rope 13 moves, the doctor can easily feel the elastic force and know that the bending portion 6 is in the bending state, and promptly release the bending of the bending portion 6. And when the doctor releases the handle 15, the bending portion 6 in the bent state can automatically return to the straight state through the elastic force to ensure that the bending portion 6 is in the straight state.

[0061] Specifically, when the curved portion 6 is in the straightened state, the baffle 17 is in Figure 4 The lowest position in the curve, when the bend 6 is bent, Figure 4 One of the traction ropes 13 moves upward, and the other traction rope 13 moves downward. The stopper 131 of the traction rope 13 moving upward abuts against the baffle 17, so that the baffle 17 moves upward. The stopper 131 of the traction rope 13 moving downward moves away from the baffle 17, so that the bending portion 6 bends. Further, a guide groove may be provided on the handheld portion 2, and the end of the baffle 17 is embedded in the guide groove, so that the movement of the baffle 17 is guided by the guide groove.

[0062] And, if Figure 4 As shown, the stopper 131 is fixed to the traction rope 13 by means of threaded connection or the like, and a first placement groove for placing the elastic member 7 is provided on the stopper 131, and a second placement groove for placing the elastic member 7 is provided on the outer side of the through hole of the baffle 17. One end of the elastic member 7 is fixed to the first placement groove of the stopper 131, and the other end is fixed to the second placement groove of the baffle 17. When the stopper 131 abuts against the baffle 17, that is, when the curved portion 6 is in a straight state, the elastic member 7 can be in a free length in the space formed by the first placement groove and the second placement groove. In addition, the elastic member 7 can also have other fixing methods, for example, the elastic member 7 is located outside the stopper 131 and one end is fixed to the baffle 17, and the other end is fixed to the stopper 131.

[0063] When the doctor operates the handle 15 to leave the initial position, for example, Figure 2 The upper middle part rotates. At this time, the traction rope 13 on the left side moves upward, and the traction rope 13 on the right side moves downward. Therefore, the elastic member 7 corresponding to the traction rope 13 on the left side is still in a free length and does not generate elastic force. On the other hand, since the baffle 17 moves upward with the traction rope 13 on the left side, and the stopper 131 set on the traction rope 13 on the right side moves downward with the traction rope 13 on the right side, the elastic member 7 corresponding to the traction rope 13 on the right side is stretched and generates elastic force. The doctor feels the elastic force and can know that the bending portion 6 is bent.

[0064] Furthermore, when the doctor accurately operates the handle 15 to return to the initial position, the blocks 131 of the multiple traction ropes 13 all abut against the baffle 17, and the elastic force of the elastic component 7 disappears. The doctor feels the disappearance of the elastic force of the elastic component 7 and can obtain the information that the bending portion 6 is in a straight state.

[0065] In addition, due to the doctor's sight angle and other reasons, when the doctor does not accurately return the handle 15 to the initial position, the doctor can always feel the elastic force of the elastic member 7 and can know that the bending portion 6 is not in the straight state until the doctor accurately operates the handle 15 to return to the initial position. Therefore, the elastic member 7 can reliably ensure that the bending portion 6 is in the straight state, preventing the bending portion 6 from being damaged by hard instruments.

[0066] In addition, when the doctor does not accurately return the handle 15 to the original position and releases the handle 15 to perform other operations, the traction rope 13 moving downward can be pulled back by the elastic force of the elastic member 7, so that the bent portion 6 in the bent state automatically restores the straight state to ensure that the bent portion 6 is in the straight state, so that the axis of the instrument outlet channel in the bent portion 6 and the axis of the instrument channel in the insertion portion 5 are located on the same straight line, so as to prevent hard instruments from damaging the bent portion 6.

[0067] Further, in another embodiment of the present invention, Figure 5 As shown, the straightening auxiliary mechanism may also only include the elastic member 7. The elastic member 7 is disposed on the curved portion 6, and two ends of the elastic member 7 are respectively fixed to two ends of the curved portion 6. The axes of the elastic member 7 and the curved portion 6 are parallel to each other.

[0068] Thus, similar to the above, the doctor can also sense the state of the bending portion 6 through the elastic member 7 provided in the bending portion 6. And, similarly, when the doctor operates the handle 15, the elastic force of the elastic member 7 can automatically restore the bending portion 6 in the bent state to the straight state, so as to ensure that the bending portion 6 is in the straight state, so that the axis of the instrument outlet channel in the bending portion 6 and the axis of the instrument channel in the insertion portion 5 are located on the same straight line, so as to prevent the bending portion 6 from being damaged by hard instruments.

[0069] In addition, the elastic member 7 disposed in the curved portion 6 can be disposed adjacent to the traction rope 13 in the curved portion 6. Thus, the adjacent elastic members 7 and traction rope 13 can move substantially the same, and the state of the curved portion 6 can be accurately reflected through the elastic member 7, so as to more reliably ensure that the curved portion 6 is in a straightened state, thereby preventing the curved portion 6 from being damaged by a hard instrument.

[0070] Furthermore, in the present invention, the hand-held portion 2 can also extend obliquely from the connection portion 4 to the radially outer side of the connection portion 4 in a direction opposite to the insertion portion 5. Therefore, compared with the existing thoracoscope, when using the thoracoscope of the present invention, the doctor only needs to slightly adjust the grip angle, and the doctor can also use the thoracoscope of the present invention according to the existing habits, which is convenient for the doctor to operate.

[0071] Furthermore, in the present invention, the angle between the hand-held portion 2 and the connecting portion 4 can be 15° to 60°, such as 30°, 40°, 45°, etc. Thus, even if the holding angle needs to be adjusted, the doctor can conveniently operate the thoracoscope of the present invention.

[0072] Furthermore, if Figure 6-8 As shown, the thoracoscope of the present invention is also provided with a guide member for changing the movement direction of the traction rope 13. Thus, even if the operation part 1 provided on the handheld part 2 is not in the same straight line with the insertion part 5, the movement direction of the traction rope 13 can be changed by the guide member, thereby realizing the bending control of the bending part 6.

[0073] Specifically, if Figure 6 As shown, in one embodiment of the present utility model, the guide member is a steering tube 21, and the traction rope 13 passes through the lumen of the steering tube 21. In addition, the steering tube 21 is a hard tube, which is made of hard materials such as metal and hard plastic.

[0074] In addition, Figure 6 Two traction ropes 13 are shown, which pass through different steering tubes 21. However, only one traction rope 13 and one steering tube 21 may be provided, or three or more traction ropes 13 and steering tubes 21 may be provided. The number of traction ropes 13 and steering tubes 21 may be set according to the direction in which the bending portion 6 needs to be bent.

[0075] In addition, multiple traction ropes 13 may be passed through the lumen of a steering tube 21 together to reduce the number of steering tubes 21 and the space occupied by the steering tubes 21, which is conducive to miniaturization of the connecting portion 4. Figure 6 As shown, each traction rope 13 is equipped with a steering tube 21 to avoid motion interference between the traction ropes 13 .

[0076] like Figure 6 As shown, the steering tube 21 has a first tube portion 211, a second tube portion 212 and a third tube portion 213. The first tube portion 211 is parallel to the handle portion 2, the third tube portion 213 is parallel to the connecting portion 4, and the second tube portion 212 is arc-shaped and connects the first tube portion 211 and the third tube portion 213.

[0077] Because the steering tube 21 having such a shape can smoothly change the movement direction of the traction rope 13, reduce the resistance of the traction rope 13 during movement, improve the operability of the operating part 1, reduce the wear of the traction rope 13, and extend the service life of the traction rope 13.

[0078] Furthermore, if Figure 6 As shown, a protection tube 132 is provided outside the traction rope 13. The protection tube 132 is used to isolate and protect the traction rope 13 to prevent the traction rope 13 from interfering with the pipeline in the insertion part 5, and is usually a spring tube, but can also be other pipes.

[0079] The first tube portion 211 of the steering tube 21 is fixed to the hand-held part 2 through the fixing member 22. The fixing member 22 has a bottom plate and a side plate. The side plate of the fixing member 22 is fixed to the hand-held part 2 by screws or welding. The bottom plate of the fixing member 22 is provided with fixing holes, and the first tube portion 211 of the steering tube 21 is fixed to the bottom plate of the fixing member 22 by screws or welding, so that the first tube portion 211 is fixed to the hand-held part 2 through the fixing member 22. The third tube portion 213 of the steering tube 21 is fixed to one end of the protective tube 132. The other end of the protective tube 132 is fixed to the front end of the insertion part.

[0080] Thus, the steering tube 21 can be securely fixed inside the thoracoscope, and when the traction rope 13 moves, the movement direction of the traction rope 13 can be securely and stably guided.

[0081] In addition, refer to Figure 7-8 , another embodiment of the guide member in the present utility model is described.

[0082] like Figure 7-8 As shown, in the present invention, the guide member may also be a steering member 23 .

[0083] The steering member 23 includes a steering member housing 231 , a support frame 232 and a plurality of steering wheels 233 .

[0084] The support frame 232 has an annular support portion and a protrusion portion protruding radially outward from the support portion. The protrusion portion is fixed to the steering housing 231 , and the steering wheel 233 is rotatably mounted on the support portion of the support frame 232 .

[0085] In addition, if Figure 7 As shown, the traction rope 13 passes through the gaps between the multiple steering wheels 233, and the multiple steering wheels 233 abut against different positions of the traction rope 13 from different directions.

[0086] Thus, even if the operating part 1 disposed on the handheld part 2 is not in the same straight line as the insertion part 5, the movement direction of the traction rope 13 can be changed by the steering member 23, thereby realizing the bending control of the bending part 6. Moreover, when the movement direction of the traction rope 13 is changed, the friction between the traction rope 13 and the guide member is reduced by the rolling of the steering wheel 233, which can further reduce the resistance of the traction rope 13 during movement, improve the operability of the operating part 1, and can greatly reduce the wear of the traction rope 13, thereby extending the service life of the traction rope 13.

[0087] Furthermore, the support frame 232 has a plurality of protrusions, and the plurality of steering wheels 233 are alternately arranged with the plurality of protrusions. That is, there are protrusions on both sides of each steering wheel 233, and the position of the steering wheel 233 on the support portion is limited by the protrusions, thereby preventing the steering wheel 233 from moving when the traction rope 13 moves, and the movement direction of the traction rope 13 can be stably and reliably changed.

[0088] Furthermore, if Figure 8 As shown, the connecting portion 4 is provided with a tee 41 . The deflection member 23 is fixed on the tee 41 .

[0089] The tee 41 has a first channel, a second channel, and a third channel. The first channel is connected to the instrument channel in the insertion part 5, the second channel is parallel to the first channel and connected to the instrument inlet channel in the connecting part 4, and the third channel is parallel to the handheld part 2 and connected to the suction port not shown.

[0090] The tee 41 has a flat side surface. The steering member housing 231 of the steering member 23 has a flat bottom surface. The bottom surface of the steering member housing 231 is fixed to the side surface of the tee 41 by bonding or the like, thereby fixing the steering member 23 to the tee 41.

[0091] Furthermore, if Figure 7-8 As shown, the side surface of the steering member housing 231 of the steering member 23 is also flat, so that multiple steering members 23 can be closely arranged together to reduce the space occupied by the steering members 23. In addition, the top surface of the steering member housing 231 is arc-shaped, which can maximize the use of the internal space of the tubular connecting portion 4 and install multiple steering members 23 in a small space.

[0092] In addition, according to an embodiment of the present invention, the bending angle between the bending portion 6 and the axis of the insertion portion 5 is greater than or equal to 130°.

[0093] According to one embodiment of the present invention, the diameter of the instrument channel is 6 mm.

[0094] According to an embodiment of the present invention, the effective length of the insertion portion 5 is 270 mm.

[0095] According to an embodiment of the present invention, an objective lens is arranged at the top of the curved portion 6, and the field of view angle of the objective lens is greater than or equal to 120°.

[0096] According to an embodiment of the present invention, the field of view of the objective lens is 0 degrees of direct viewing, and the depth of field of the objective lens is less than or equal to 3 mm and greater than or equal to 100 mm.

[0097] According to the embodiments and variations of the present invention, various thoracoscopes are provided, which can meet the following technical parameters:

[0098] 1. The mirror body has ≥ 4 common function remote control buttons.

[0099] 2. Bidirectional bending function: Yes.

[0100] 3. Ergonomic design: Yes.

[0101] 4. Visual angle: ≥120° direct view

[0102] 5. Visual field direction: 0° straight ahead.

[0103] 6. Depth of field: ≤3 and ≥100mm.

[0104] 7. Thoracoscopic outer diameter: ≤9.0mm. Due to the miniaturization of modern CMOS, the outer diameter of this thoracoscope can be optimized to 8.0mm or even thinner.

[0105] 8. Bending angle: upper ≥130°, lower ≥130°.

[0106] 9. Effective length: 270mm.

[0107] 10. Pliers pipe: 6.0mm.

[0108] 11. Laser compatibility: Yes.

[0109] 12. High frequency compatibility: Yes.

[0110] 13. Endoscopic information memory function: Yes.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents, or make different combinations of the above technical features. However, these modifications, replacements and combinations do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A thoracoscope, characterized in that: include: The insertion part is in the shape of a hard tube and has an instrument channel for the instrument to enter; a connecting portion, which is disposed at the base end side of the insertion portion and has an instrument inlet channel communicating with the instrument channel, wherein the axis of the instrument inlet channel and the axis of the instrument channel are located on the same straight line; a bending portion, which is disposed at the front end side of the insertion portion, has an instrument outlet channel communicating with the instrument channel, and can be bent in at least one direction; a hand-held portion, which is disposed on the connecting portion and extends obliquely from the connecting portion toward the radially outer side of the connecting portion; An operating part, which is arranged on the hand-held part and connected to the bending part through a plurality of traction ropes, and the operating part controls the bending of the bending part by operating the traction ropes; A straightening auxiliary mechanism can make the axis of the instrument outlet channel and the axis of the instrument channel be located on the same straight line.

2. The thoracoscope according to claim 1, characterized in that: The straightening auxiliary mechanism includes a plurality of elastic members. When the bent portion is in a straightened state, the elastic member is at a free length. The elastic member is disposed on the bending portion. The two ends of the elastic member are respectively fixed to the two ends of the bending part. The elastic member is disposed along the axial direction of the curved portion and adjacent to the traction rope in the curved portion.

3. The thoracoscope according to claim 1, characterized in that: The straightening auxiliary mechanism includes a baffle and a plurality of baffles. The baffle is arranged inside the handheld portion and can move inside the handheld portion, and has a plurality of through holes for the traction ropes to pass through respectively. The plurality of stoppers are respectively provided with the traction ropes, and when the bent portion is in a straightened state, the stoppers of the plurality of traction ropes are all in contact with the same side of the baffle.

4. The thoracoscope according to claim 3, characterized in that: The operating part also has a connecting rod. One end of the connecting rod is rotatably fixed to the operating portion, and the other end of the connecting rod is rotatably fixed to the baffle. When the bent portion is in a straightened state, the connecting rod is perpendicular to the baffle to support the baffle.

5. The thoracoscope according to claim 3, characterized in that: The straightening auxiliary mechanism further comprises an elastic member, One end of the elastic member is fixed to the stopper, and the other end is fixed to the baffle. When the bent portion is in a straightened state, the elastic member is at a free length.

6. The thoracoscope according to claim 1, characterized in that: It also includes a steering tube for changing the movement direction of the traction rope. The traction rope passes through the lumen of the steering tube. The steering tube comprises a first tube portion, a second tube portion and a third tube portion. The first tube portion is parallel to the hand-held portion, the third tube portion is parallel to the connecting portion, and the second tube portion is arc-shaped and connects the first tube portion and the third tube portion.

7. The thoracoscope according to claim 6, characterized in that: The outer layer of the traction rope is covered with a protective tube. The first tube part is fixed to the hand-held part, and the third tube part is fixed to the protection tube.

8. The thoracoscope according to claim 1, characterized in that: It also includes a steering member for changing the movement direction of the traction rope. The steering member comprises a steering member housing, a support frame and a plurality of steering wheels. The support frame has an annular support portion, the support frame is fixed to the steering member housing, and the steering wheel is rotatably mounted on the support portion. The traction rope passes through the gaps between the plurality of steering wheels, and the plurality of steering wheels abut against different positions of the traction rope from different directions.

9. The thoracoscope according to claim 8, characterized in that: The support frame has a plurality of protrusions. The plurality of steering wheels and the plurality of protrusions are arranged alternately.

10. The thoracoscope according to any one of claims 1 to 9, characterized in that: The angle between the hand-held portion and the connecting portion is 15° to 60°.

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