CN210903134U

CN210903134U - Sheath structure and trans-bronchoscope

Info

Publication number: CN210903134U
Application number: CN201921477909.0U
Authority: CN
Inventors: 范小红; 孙加源; 陈军祥; 唐伟; 郑忠伟
Original assignee: Shanghai Chest Hospital
Current assignee: Shanghai Chest Hospital
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-07-03
Anticipated expiration: 2029-09-03

Abstract

The utility model provides a sheath tubular construction and trans bronchoscope, sheath tubular construction include: a sheath, a sheath support connected to a first end of the sheath, and a locking structure; the sheath tube is internally provided with a sheath tube channel which is used for respectively accessing the endoscope and the instrument at different times; the locking structure is arranged on the outer side of the sheath tube and used for locking the position of the sheath tube relative to the trachea in the human body after the sheath tube reaches a required position; the sheath canal support is used for supporting and connecting the oral cavity or the nasal cavity of the human body. The utility model discloses under the condition of same trachea external diameter, can provide great radial space for the circulation of apparatus and/or sample. And simultaneously, the utility model discloses the radial dimension of well endoscope and sheath pipe is convenient for accomplish littleer, and the sheath pipe that radial dimension is littleer and endoscope, apparatus wherein can be convenient for go deep into in the thinner trachea.

Description

Sheath structure and trans-bronchoscope

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a sheath tube structure and trans-form bronchoscope.

Background

The trachea/bronchus endoscope is widely applied to the diagnosis and treatment of respiratory diseases of airways, and is inserted into a human body through the endoscope to diagnose and treat the respiratory diseases. The trachea and the bronchus have complex structures, the trachea and the main trachea, the main trachea and each lower bronchus have tree structures, the outer diameter of the trachea is relatively small when the next grade is performed, and therefore the size of the outer diameter of the trachea can be small.

In the existing endoscope, an instrument channel for accessing an instrument needs to be configured, and further, under the condition of limited outer diameter of a trachea, the radial sizes of the instrument channel and the endoscope channel are limited, so that the sizes of surgical instruments are limited and can only adopt small sizes.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sheath tube structure and trans bronchoscope to when solving surgical instruments and operating through endoscope apparatus passageway, the endoscope all is restricted and be unfavorable for deep into trachea of more subordinate with surgical instruments's size, is difficult to satisfy the problem of operation demand. In order to solve the problem, the outer diameter of the endoscope needs to be small, and the working channel in the endoscope needs to be large, so that the endoscope can not only move to a peripheral air passage, but also can fully perform diagnosis and treatment and other operations by utilizing instruments.

According to the utility model discloses a first aspect provides a sheath pipe structure, include: a sheath, a sheath support connected to a first end of the sheath, and a locking structure;

the sheath tube is internally provided with a sheath tube channel which is used for respectively accessing the endoscope and the instrument at different times; the locking structure is arranged on the outer side of the sheath tube and used for locking the position of the sheath tube relative to the trachea in the human body after the sheath tube reaches a required position; the sheath canal support is used for supporting and connecting the oral cavity or the nasal cavity of the human body.

Optionally, the locking structure is used for filling between the sheath and the trachea in the human body through volume expansion so as to lock the position of the sheath relative to the trachea in the human body.

Optionally, the locking structure includes an expandable container disposed outside the sheath, the expandable container is communicated with at least one container inlet, the container inlet is used for filling a gas or a liquid into a lumen of the expandable container, and the expandable container can be expanded along with the filling of the lumen to lock the position of the sheath relative to the trachea in the human body after expansion.

Optionally, the inflatable container is annularly arranged outside the sheath.

Optionally, a metal developing ring is further disposed at a position of the sheath near the second end of the sheath, and the metal developing ring is located on a side of the expandable container far away from the sheath supporter.

Optionally, the sheath includes the sheath body and locates the horn mouth structure of the first end of sheath body, the sheath body passes through the horn mouth structural connection the sheath eyelidretractor.

Optionally, the outside of sheath pipe body is equipped with be used for the joint in vernier snap ring in the sheath pipe eyelidretractor, vernier snap ring is followed the length direction's of sheath pipe body position is adjustable.

Optionally, a suction port is arranged in the bell-mouth structure, and the suction port is communicated with the sheath channel and used for sucking the foreign matter in the sheath channel.

Optionally, the sheath supporter comprises a supporter body, and a first side of the supporter body along a first direction is provided with a first channel and at least one breathing channel; an access part for accessing the oral cavity of the human body extends outwards from a second side of the support body along the first direction, a second channel is arranged in the access part, and the second channel is respectively communicated with the at least one breathing channel and the first channel; the sheath tube sequentially penetrates through the second channel and the first channel and is clamped with the first channel.

Optionally, the sheath support further includes a fixing band, and two ends of the fixing band are respectively connected to two ends of the support body along the second direction.

Optionally, the number of the breathing passages is two, and the two breathing passages are distributed on two sides of the first passage along the second direction.

Optionally, the sheath supporter includes an access portion, a silicone plug, and a supporter body; the support body is provided with a first channel part and an access part accommodating channel which are connected with each other in a penetrating way, the access part is arranged in the access part accommodating channel, the access part is provided with a second channel part and a silica gel plug accommodating channel which are connected with each other in a penetrating way, the silica gel plug is arranged in the silica gel plug accommodating channel, and the silica gel plug is provided with a third channel part in a penetrating way;

after the access part, the silica gel plug and the support body are assembled together, the first channel part, the third channel part and the second channel part are communicated in sequence to form a complete channel.

Optionally, scale marks distributed along the length direction of the sheath tube are arranged outside the sheath tube.

According to a second aspect of the present invention there is provided a trans-bronchoscope comprising a sheath channel structure and an endoscope according to the first aspect and alternatives thereof, wherein the radial dimension of the sheath channel in the sheath channel structure matches the endoscope.

Optionally, no instrument channel is provided in the endoscope, or: an instrument channel is provided in the endoscope, and the radial dimension of the instrument channel can be smaller than the instruments required by the current surgery.

The utility model provides a sheath tube structure and trans-form bronchoscope can utilize same sheath tube passageway, inserts endoscope and apparatus respectively at the different times, and then, can be favorable to realizing following process: the endoscope is connected, so that the sheath tube is controlled to enter a target position according to the guidance of the endoscope, then after the position of the sheath tube is locked, an instrument such as a sampling instrument, a working head or other surgical instruments is connected to the sheath tube, and further, under the guidance of imaging equipment such as X-ray, CT, bronchial ultrasound and the like, the target position and/or the nearby position can be processed by the instrument. It is thus clear that the utility model discloses need not to insert endoscope and apparatus simultaneously in sheath pipe passageway, under the condition of same sheath pipe external diameter, can provide great radial space for the circulation of apparatus and/or sample to can make the apparatus and/or the sample of great size pass through.

Simultaneously, because the required apparatus that uses during the operation is not through the endoscope access, just also need not to dispose the apparatus passageway that supplies this apparatus to pass through in the endoscope, so, the radial dimension of endoscope can not receive the restriction of this apparatus passageway, the utility model discloses can make and use thinner endoscope to become possible, when the endoscope is thinner, the radial dimension of the sheath pipe that corresponds also is convenient for accomplish littleer, and the sheath pipe that radial dimension is littleer reaches apparatus wherein, endoscope can be convenient for go deep into in the thinner trachea, it is visible, the utility model discloses can make the trans-bronchoscope go deep into thinner trachea and become possible.

Furthermore, since the endoscope can be inserted into the thinner trachea, it can directly and clearly acquire the image of the corresponding trachea region, compared to the prior art, since the endoscope cannot be inserted into the thinner trachea, the image of the corresponding position can only be acquired by other imaging devices (such as X-ray imaging devices), and further, the image acquired by the endoscope can more clearly represent the condition of the corresponding trachea region.

Because insert the endoscope, take out the endoscope, insert surgical instruments's in-process again, easily lead to the position of sheath pipe to take place the skew to can lead to when taking a sample unable accurate target site or its near position that guides to the endoscope sample, so, the utility model discloses further utilize locking mechanical system locking sheath pipe and the tracheal position in the human body, prevent the skew emergence of position, further ensure can sample required position.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a sheath structure according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a sheath and a locking structure according to an embodiment of the present invention;

fig. 3 is a first schematic structural view of a sheath supporter according to an embodiment of the present invention;

fig. 4 is a second schematic structural view of the sheath supporting device according to an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of section A-A in FIG. 4;

fig. 6 is a schematic structural view of a sheath and a sheath supporter according to an embodiment of the present invention;

fig. 7 is a first schematic structural view of a sheath supporter according to another embodiment of the present invention;

FIG. 8 is a schematic structural view of section B-B of FIG. 7;

fig. 9 is a second schematic structural view of a sheath supporting device according to another embodiment of the present invention;

fig. 10 is a schematic structural view of a sheath and a sheath holder according to another embodiment of the present invention;

fig. 11 is a schematic view of an application scenario of a trans-bronchoscope according to an embodiment of the present invention;

fig. 12 is a schematic flow chart illustrating a method of using a trans-bronchoscope according to an embodiment of the present invention.

Description of reference numerals:

1-sheath tube;

11-sheath channel;

12-a sheath body;

13-bell mouth structure;

131-a container inlet;

132-a suction port;

14-a head structure;

15-a cursor snap ring;

2-a locking structure;

21-an expandable container;

3-a sheath support;

31-a support body;

311-a first channel;

312 — an access portion;

313-a breathing channel;

314-a second channel;

315-connecting hole;

32-securing straps;

4-a sheath support;

41-an access;

42-silica gel plug;

43-a support body;

44-a first channel portion;

45-a third channel portion;

46-second channel portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 1 is a schematic structural diagram of a sheath structure according to an embodiment of the present invention.

Referring to fig. 1, the sheath structure includes: a sheath 1, a sheath support 3 connected to a first end of the sheath 1, and a locking structure 2.

A sheath channel 11 is arranged in the sheath 1, and the sheath channel 11 is used for respectively accessing an endoscope and an instrument at different times; it may specifically be: the sheath channel 11 is used to first access the endoscope to reach the target area of the trachea in the human body under the guidance of the endoscope, and then access the instrument to treat the target area or its vicinity after the endoscope is removed.

The instrument may be, for example, a sampling instrument, a working head, or other surgical instrument.

The treatment may be, for example, a treatment or diagnosis of the corresponding site, including but not limited to sampling.

It can be seen that the above embodiments do not need to access the endoscope and the sampling instrument in the sheath channel at the same time, and under the condition of the same outer diameter of the trachea, a larger radial space can be provided for the circulation of the instrument and/or the sample, so that the instrument and/or the sample with a larger size can pass through.

Simultaneously, because the required apparatus that uses during the operation is not through the endoscope access, also need not to dispose the apparatus channel that supplies this apparatus to pass through in the endoscope yet, so, the radial dimension of endoscope can not receive the restriction of this apparatus channel, the utility model discloses can make and use thinner endoscope to become possible, when the endoscope is thinner, the radial dimension of the sheath pipe that corresponds also is convenient for accomplish littleer, and the sheath pipe that radial dimension is littleer and endoscope, apparatus wherein can be convenient for go deep into in the thinner trachea, it is visible, above embodiment can make the trans-bronchoscope go deep into thinner trachea and become possible.

The target site or a site in the vicinity thereof may be, for example, a lesion site.

The sheath channel 11 can be a single channel, in which the space for accessing the endoscope and the space for accessing the sampling instrument can not be distinguished, meanwhile, the present embodiment does not exclude that the flexible structure is used to separate the changeable endoscope space and the changeable instrument space in the sheath channel 11, and further, when the endoscope is accessed, the endoscope space can be radially expanded to compress the instrument space, which can occupy the space in the sheath channel 11 as much as possible when the endoscope is accessed, so as to be suitable for the passage of the endoscope with larger size; upon access of the sampling instrument, the instrument space can be radially expanded to compress the endoscope space, which can occupy as much space within the sheath channel 11 as possible upon access of the sampling instrument, thereby accommodating passage of larger sized instruments and/or samples.

In the process of accessing the endoscope, taking out the endoscope and accessing the sampling instrument, the position of the sheath tube is easy to deviate, so that the target part guided by the endoscope or the nearby part cannot be accurately sampled during sampling. Meanwhile, according to the conventional means in the art, if a deviation occurs, the deviation can be solved by adopting the means of readjusting the sheath tube, and the present embodiment can provide another idea of avoiding the deviation from occurring or reducing the possibility of the deviation from occurring through the introduction of the locking structure 2.

In this embodiment, the locking structure 2 is disposed outside the sheath tube 1, and is configured to lock the position of the sheath tube 1 relative to the trachea in the human body after the sheath tube 1 reaches a desired position. The locking structure 2 may for example be arranged at a position of the sheath near the second end.

In the specific implementation process, the locking structure 2 can be controlled, so that locking is realized when locking is needed, and the sheath 1 and the trachea in the human body can move smoothly when locking is not needed. Meanwhile, the control of locking or not can be implemented manually or automatically, for example, whether the target position is reached or not can be judged according to the image collected by the endoscope, and if the target position is reached, the locking structure 2 is controlled to lock the sheath tube 1 and the trachea in the human body.

The locking structure 2 can be any structure capable of locking the position between the sheath tube 1 and the trachea in the human body, wherein the locking can mean that the sheath tube 1 and the trachea in the human body cannot move relatively, and can mean that the sheath tube 1 and the trachea in the human body are difficult to move relatively.

As can be seen, in the above embodiment, the position of the sheath tube and the trachea in the human body is locked by the locking mechanism, thereby preventing the occurrence of positional deviation and further ensuring that the desired site can be sampled.

The sheath tube supporter 3 is used for supporting and connecting to the oral cavity or nasal cavity of a human body. It can be arbitrary can be in the same place with human oral cavity or nasal cavity link to each other, and can be suitable for sheath pipe and external intercommunication to be convenient for insert the structure of endoscope and apparatus access.

Fig. 2 is a schematic structural diagram of a sheath and a locking structure according to an embodiment of the present invention.

Referring to fig. 2, the locking structure 2 is used for filling the space between the sheath 1 and the trachea in the human body by volume expansion to lock the position of the sheath 1 relative to the trachea in the human body. The volume expansion can be realized by the accumulation of gas, liquid and mechanical structure along the radial direction of the sheath.

In one embodiment, the locking structure 2 comprises an inflatable container 21.

The expandable container 21 is arranged outside the sheath tube 1, the expandable container 21 is communicated with at least one container inlet, the container inlet can be a container inlet 131 arranged on the bell mouth structure 13, the container inlet 131 is used for filling gas or liquid into the inner cavity of the expandable container 1, and the expandable container 21 can expand along with the filling of the inner cavity so as to lock the position of the sheath tube 1 relative to the trachea in the human body after expansion. To achieve inflation, the container inlet 131 may be directly or indirectly externally connected to an inflation device or a liquid delivery device.

The inflatable container 21 may be understood as any structure having an interior cavity and a volume that increases as the interior cavity fills.

The connection between the container inlet 131 and the expandable container 21 can be realized, for example, by a channel, which can be formed, for example, by one or more pipes arranged inside or outside the sheath, or by an annular space arranged around the inside or outside of the sheath, wherein the pipes can be linear, curved, or helical.

It can be seen that the communication between the container inlet 131 and the inflatable container 21 can be achieved by using a solid structure, and the structure is not different from the description of the embodiment.

In a specific implementation, the expandable container 21 may be disposed around the outer side of the sheath 1. Thereby provide even locking power around sheath pipe 1, ensure the stability of locking effect, also can avoid sheath pipe 1 and human interior trachea to take place the contact action power, and then can be favorable to placing and take place the damage to the trachea.

In one embodiment, the inflatable container 21 may be in the form of a balloon, which is understood to mean that the outer surface of the inflatable container is a rounded surface after inflation, which further prevents damage to the trachea.

In one embodiment, a metal developing ring may be further disposed on the sheath 1 near the second end, and may be disposed around the sheath 1, where the metal developing ring is located on a side of the expandable container 21 away from the sheath support 3. And in particular may be located immediately adjacent the inflatable container 21 at the tip of the bronchoscope. Through the metal developing ring, the position of the tip can be conveniently observed by observation equipment such as rays.

Referring to fig. 2, the sheath 1 includes a sheath body 12 and a bell-mouth structure 13 disposed at a first end of the sheath body 12, and the sheath body 12 is connected to the sheath supporter 3 through the bell-mouth structure 13.

The bell-mouth structure 13, as it can be understood, has structural features including: the radial dimension of the small-diameter end connected to the sheath body 12 is smaller than the radial dimension of the large-diameter end away from the sheath body 12, and meanwhile, the above-mentioned change in the radial dimension of the bell-mouth structure 13 includes a change in the radial dimension of the outer wall and also a change in the radial dimension of the inner wall.

Due to the variation of the radial dimension of the outer wall, the bell mouth structure 13 can be conveniently clamped in a corresponding channel of the sheath support 3, which may be, for example, the first channel 311 mentioned later, and further, the radial dimension of the small-diameter end of the bell mouth structure 13 can be smaller than the first channel 311, so as to be suitable for passing through, and the radial dimension of the large-diameter end of the bell mouth structure 13 can be larger than the first channel 311, so as to be clamped.

Insertion of instruments and endoscopes is also facilitated due to the variation in the radial dimension of the inner wall.

In one embodiment, a vernier snap ring 15 for being clamped in the sheath supporter 3 is disposed on the outer side of the sheath body 12, and the vernier snap ring 15 may be a silica gel vernier snap ring.

Wherein, the radial dimension change of the outer wall of the bell mouth structure 13 can limit the movement of the sheath 1 relative to the sheath supporter 3 along the connection direction, but is difficult to limit the movement along the separation direction. In the above embodiment, by the provision of the vernier snap ring 15, it can be advantageous to restrict the movement between the sheath holder 3 and the sheath 1 in the detachment direction, thereby stabilizing the position between the sheath 1 and the sheath holder 3.

Meanwhile, the position of the vernier snap ring 15 along the length direction of the sheath body 12 is adjustable, and further, the position of the vernier snap ring 15 can be adjusted according to the length difference of the sheath which needs to be connected into a human body.

The inserting direction may be a direction in which the sheath is inserted into the sheath holder 3, the detaching direction may be a direction in which the sheath 1 is detached from the sheath holder 3, and the inserting direction and the detaching direction may be opposite directions, for example, as shown in fig. 6, the inserting direction is a direction in which the sheath 1 is inserted into the sheath holder 3 from top to bottom, and the detaching direction is a direction in which the sheath 1 is detached from the sheath holder 3 from bottom to top.

In one embodiment, a suction port 132 is disposed in the bell mouth structure 13, and the suction port 132 is communicated with the sheath channel 11 for sucking the foreign matter in the sheath channel 11. Therefore, the suction port 132 can be externally connected to a suction device.

In the specific implementation process, the tube wall of the bell mouth structure 13 can adopt a thicker size, so that the insertion of the endoscope and the sampling instrument is facilitated, and the installation and the fixation of the tube wall in the sheath supporter 3 are also facilitated.

In one embodiment, the front end of the sheath body 12 is further provided with a head structure 14, and the head structure 14 can be understood as having a radial dimension smaller than that of the sheath body 12, i.e. forming a closed structure, which facilitates insertion of the sheath 1 into the trachea.

In one embodiment, the sheath 1 is provided with scale marks distributed along the length direction of the sheath 1. The depth of the sheath tube 1 entering the human body can be clearly observed through the scale marks. In the specific implementation process, the scale mark can be annular, so that the depth can be observed under observation at various angles.

Fig. 3 is a first schematic structural view of a sheath supporter according to an embodiment of the present invention; fig. 4 is a second schematic structural view of the sheath supporting device according to an embodiment of the present invention; FIG. 5 is a schematic view of the structure of section A-A in FIG. 4; fig. 6 is a schematic structural view of a sheath and a sheath supporter according to an embodiment of the present invention.

Referring to fig. 3 to 6, the sheath supporter 3 includes a supporter body 31.

A first side of the supporter body 31 in the first direction has a first passage 311 and at least one breathing passage 313; an access portion 312 for accessing the oral cavity of the human body extends outwards from a second side of the supporter body 31 along the first direction, a second channel 314 is formed in the access portion 312, and the second channel 314 is respectively communicated with the at least one breathing channel 313 and the first channel 311; the sheath 1 sequentially passes through the second channel 314 and the first channel 311, and is clamped with the first channel 311, for example, the sheath can be clamped with the first channel 311 through a cursor snap ring 15 and the tail of the bell mouth structure 13.

Specifically, the tail end of the bell mouth structure 13 can be connected to the rear end of the first channel 311 when the sheath tube 1 moves to the limit position along the connection direction, so as to avoid the sheath tube from being further connected, and the vernier snap ring 15 can be connected to the front end of the first channel 311 when the sheath tube moves to the limit position along the disconnection direction, so as to avoid the vernier snap ring from being further disconnected, so that the part on one side of the front end of the vernier snap ring 15 in the sheath tube body 12 of the sheath tube 1 can be always on one side of the front end of the first channel 311 after passing through the first channel 311.

Wherein, the interval between second passageway 314 and the sheath 1 can with breathe passageway 313 intercommunication, and then, insert when the people oral cavity access portion 312 to when making sheath 1 can access the trachea, through this interval and breathing passageway 313's intercommunication, can be favorable to the people to keep breathing unobstructed.

In a specific implementation process, the number of the breathing passages 313 may be two, and the two breathing passages are distributed on two sides of the first passage along the second direction.

In one embodiment, the sheath supporter 3 further includes a fixing band 32, and two ends of the fixing band 32 are respectively connected to two ends of the supporter body 31 along the second direction. Specifically, it may be connected to the connection holes 315 provided at both ends of the supporter body 31 in the second direction.

The fixing band 32 can be put on the head of the person to fix the sheath supporter 3 at the oral cavity. Meanwhile, the access portion 312 can be inserted into the oral cavity.

The first direction and the second direction referred to above may be understood as directions perpendicular to each other, and the first direction may be understood as an axial direction of the first channel and the second channel, and may be understood as an axial direction of the sheath when the sheath is inserted.

Fig. 7 is a first schematic structural view of a sheath supporter according to another embodiment of the present invention; FIG. 8 is a schematic structural view of section B-B of FIG. 7; fig. 9 is a second schematic structural view of a sheath supporting device according to another embodiment of the present invention; fig. 10 is a schematic structural view of a sheath supporting device according to another embodiment of the present invention.

The sheath supporter shown in fig. 3 to 6 can be used for supporting and connecting the oral cavity, and the sheath supporter shown in fig. 7 to 10 can be used for supporting and connecting the nasal cavity.

Referring to fig. 7 to 10, the sheath supporter 4 may include an access portion 41, a silicone plug 42 and a supporter body 43. The supporter body 43 is provided with a first channel portion 44 and an access portion accommodating channel which are connected with each other in a penetrating manner, the access portion 41 is arranged in the access portion accommodating channel, the access portion 41 is provided with a second channel portion 46 and a silica gel plug accommodating channel which are connected with each other in a penetrating manner, the silica gel plug 42 is arranged in the silica gel plug accommodating channel, and the silica gel plug 42 is provided with a third channel portion 45 in a penetrating manner.

After the access portion 41, the silicone plug 42 and the supporter body 43 are assembled together, the first channel portion 44, the third channel portion 45 and the second channel portion 46 are sequentially communicated, so that a complete channel, which can be understood as a complete endoscope channel, is formed.

The outer side of the access part 41 is provided with a first locking thread; the inboard of eyelidretractor body 43 be equipped with first locking screw thread matched with second locking screw thread, when rotatory eyelidretractor body 43 the silica gel stopper 42 can the atress be out of shape, play the effect of locking sheath pipe 1.

In a specific example, the access portion 41 can be inserted into a nasal cavity of a patient, the sheath tube 1 can pass through the nasal opening, the inferior nasal passage/the middle nasal passage along an endoscope channel to reach a nasopharynx portion, an oropharynx portion, an epiglottis, a glottis and a lung, the locking structure 2 is controlled to lock the position of the sheath tube 1 and a trachea in a human body when the sheath tube reaches a focus, and meanwhile, the silica gel plug is deformed under stress by rotating the support body to lock the sheath tube 1 and the sheath tube support 4 of the nasal cavity.

The present embodiments also provide a trans-bronchoscope comprising a sheath structure according to the above alternatives.

Wherein, the trans-bronchoscope can also comprise an endoscope, which can be understood as an endoscope required by the current operation and can correspond to the instruments required by the current operation, and the radial dimension of the sheath channel in the sheath structure is matched with the endoscope required by the current operation; wherein the instrument and endoscope can be understood with reference to the foregoing description.

No instrument channel is provided in the endoscope, or: the endoscope is provided with an instrument channel, the radial size of the instrument channel is smaller than that of an instrument required by the current operation, and then, compared with the scheme that the endoscope needs to be passed by the instrument in the prior art, the instrument channel and the endoscope can be relatively thin.

At the same time, this dimensional relationship of the instrument channel to the instruments required for the current procedure can be understood to be based on the current trachea. Therefore, the present embodiment does not exclude the following situations in practical application: the instrument channel of an endoscope for certain trachea may also have a larger radial dimension than the instrument channel for other trachea. This embodiment also does not exclude the case where the radial dimension of the instrument channel is very small compared to most instruments.

It can be seen that, since the endoscope is not provided with an instrument channel for passing the instruments required by the current operation, the radial dimension of the endoscope is not limited by the instrument channel, for example, the endoscope may not be provided with the instrument channel, or a thinner instrument channel is provided, and accordingly, the use of a thinner endoscope is possible, when the endoscope is thinner, the radial dimension of the corresponding sheath tube is also convenient to be smaller, and the sheath tube with the smaller radial dimension and the endoscope and the instruments therein can be convenient to be deeper into a thinner trachea. It can be seen that the above embodiments may enable a trans-bronchoscope to reach deeper into the thinner trachea.

Fig. 11 is a schematic view of an application scenario of a trans-bronchoscope according to an embodiment of the present invention; fig. 12 is a schematic flow chart illustrating a method of using a trans-bronchoscope according to an embodiment of the present invention.

Referring to fig. 11 and 12, there is provided a method of using a trans-bronchoscope according to one or more of the alternatives, comprising:

s101: an endoscope is coupled into the sheath channel.

S102: controlling the sheath tube to reach a target position of a trachea in a human body according to the guidance of the endoscope;

s103: locking the position of the sheath relative to the trachea in the human body with the locking structure.

In the step S103, after the sheath is inserted due to the positioning of the cursor snap ring, the cursor snap ring can limit the position of the sheath relative to the sheath supporter by engaging with the corresponding structure in the sheath supporter.

S104: taking out the endoscope and connecting an instrument into the sheath;

s105: under the guidance of an imaging device, the instrument is used for carrying out diagnosis or treatment on the target part and/or the nearby part.

The imaging device therein may be for example X-ray, CT, etc. The instrument may be, for example, a sampling instrument, a working head, or other surgical instrument. The treatment may be, for example, a treatment or diagnosis of the corresponding site, including but not limited to sampling.

The terms, alternative embodiments and technical effects mentioned in the above processes can be understood by referring to the related descriptions of the embodiments shown in fig. 1 to 6, so that the description is not repeated here.

In summary, the sheath structure and the trans-bronchoscope provided by the embodiment can utilize the same sheath channel to respectively access the endoscope and the sampling instrument at different times, and further can be beneficial to realizing the following processes: the endoscope is connected, so that the sheath tube is controlled to enter a target position according to the guidance of the endoscope, then after the position of the sheath tube is locked, instruments such as a sampling instrument, a working head or other surgical instruments are connected to the sheath tube, and further, under the guidance of imaging equipment such as X-ray and CT, the treatment of the target position or the position nearby the target position can be realized. Therefore, the present embodiment can provide a larger radial space for the circulation of the sampling instrument and/or sample without simultaneously accessing the endoscope and the instrument in the sheath channel, and under the condition of the same outer diameter of the trachea, the sampling instrument and the sample with larger size can pass through the space.

Meanwhile, as the instruments needed to be used in the operation are not accessed through the endoscope, and an instrument channel for the instruments to pass through does not need to be configured in the endoscope, the radial dimension of the endoscope can not be limited by the instrument channel, the embodiment can enable the use of a thinner endoscope, when the endoscope is thinner, the radial dimension of the corresponding sheath tube is convenient to be smaller, and the sheath tube with the smaller radial dimension, the endoscope and the instruments therein can be conveniently extended into a thinner trachea, thus the embodiment can enable the trans-bronchoscope to be extended into the thinner trachea.

Meanwhile, in the process of accessing the endoscope, taking out the endoscope and accessing the sampling instrument, the position of the sheath tube is easy to deviate, so that the target part guided by the endoscope or the part nearby the target part cannot be accurately sampled when the sampling is carried out, therefore, the position of the sheath tube and the trachea in the human body is further locked by the locking mechanism, the position deviation is prevented, and the required part can be sampled.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A sheath structure, comprising: the endoscope comprises an endoscope, a sheath tube supporter connected to a first end of the sheath tube, and a locking structure;

2. The sheath structure of claim 1, wherein the locking structure is configured to fill between the sheath and a trachea within the human body by volumetric expansion to lock the position of the sheath relative to the trachea within the human body.

3. The sheath structure of claim 2, wherein the locking structure comprises an inflatable container disposed outside the sheath, the inflatable container communicating with at least one container inlet for filling a lumen of the inflatable container with a gas or liquid, the inflatable container being inflatable with the filling of the lumen to lock the position of the sheath relative to the trachea in the body after inflation.

4. A sheath structure according to claim 3, wherein the inflatable container is annularly disposed outside the sheath.

5. The sheath structure of claim 4, wherein a metal developing ring is further provided on the sheath near the second end thereof, the metal developing ring being located on a side of the inflatable container away from the sheath holder.

6. The sheath structure of any one of claims 1 to 5, wherein the sheath comprises a sheath body and a flare structure provided at a first end of the sheath body, and the sheath body is connected to the sheath supporter through the flare structure.

7. The sheath structure of claim 6, wherein a cursor snap ring for being snapped in the sheath supporter is disposed at an outer side of the sheath body, and a position of the cursor snap ring along a length direction of the sheath body is adjustable.

8. The sheath structure of claim 6, wherein a suction port is provided in the flare structure, the suction port communicating with the sheath channel for sucking foreign matter in the sheath channel.

9. The sheath structure of any one of claims 1 to 5, wherein the sheath support comprises a support body having a first channel and at least one breathing channel on a first side of the support body in a first direction; an access part for accessing the oral cavity of the human body extends outwards from a second side of the support body along the first direction, a second channel is arranged in the access part, and the second channel is respectively communicated with the at least one breathing channel and the first channel; the sheath tube sequentially penetrates through the second channel and the first channel and is clamped with the first channel.

10. The sheath structure according to claim 9, wherein the sheath supporter further comprises fixing bands having both ends respectively connected to both ends of the supporter body in the second direction.

11. The sheath structure of claim 9, wherein the number of breathing channels is two, and two breathing channels are distributed on both sides of the first channel along the second direction.

12. The sheath structure according to any one of claims 1 to 5, wherein the sheath holder includes an access portion, a silicone plug, and a holder body; the support body is provided with a first channel part and an access part accommodating channel which are connected with each other in a penetrating way, the access part is arranged in the access part accommodating channel, the access part is provided with a second channel part and a silica gel plug accommodating channel which are connected with each other in a penetrating way, the silica gel plug is arranged in the silica gel plug accommodating channel, and the silica gel plug is provided with a third channel part in a penetrating way;

13. The sheath structure of any one of claims 1 to 5, wherein the sheath has graduations on its exterior along its length.

14. A trans-bronchoscope comprising a sheath structure according to any one of claims 1 to 13 and an endoscope, the sheath channel having a radial dimension matching the endoscope.

15. The trans-bronchoscope according to claim 14 wherein no instrument channel is provided in the endoscope, or wherein: an instrument channel is arranged in the endoscope, and the radial dimension of the instrument channel is smaller than that of an instrument required by the current operation.