Instrument tube, endoscope and sampling method

Abstract

The present invention provides an instrument tube, an endoscope and a sampling method, and relates to the field of endoscopes. The present invention comprises an instrument tube body, at least one separator is provided, the separator is located in an instrument channel of the instrument tube body, the separator is extended along the axial direction of the instrument channel, and the two ends of the separator respectively extend to the distal port and the proximal port of the instrument channel, so that the instrument channel is divided into at least two parallel insertion channels by the separator, wherein any separator can be deformed by force toward its opposite sides to change the cross-sectional size of the insertion channel on the corresponding side separated by the separator; compared with the prior art, the present invention solves the problem that during the sampling process of the instrument channel of the endoscope at the corresponding part of the body, the previous sample can be effectively prevented from contaminating the next sample.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to an instrument tube, an endoscope and a sampling method. Background Art

[0002] Endoscope is a commonly used medical device, which is widely used for examination and diagnosis and treatment of diseases. Its internal structure includes a special instrument tube, and the hollow structure of the instrument tube forms an instrument channel, which is used for various treatment instruments to pass through, such as biopsy forceps.

[0003] In the related art, when medical staff take samples each time, they first insert the insertion part of the endoscope into the corresponding part of the body where the sample needs to be taken. Then, through the instrument channel of the endoscope, the biopsy forceps and other treatment instruments are sent into the lesion in the part to take samples. During this process, the insertion part of the endoscope remains in the body and will not be pulled out. However, since the sample taken each time is removed from the endoscope with the biopsy forceps through the same instrument channel, the sample taken previously can easily remain in the instrument channel of the instrument tube, and there is a problem that the sample taken previously contaminates the sample taken later. Summary of the invention

[0004] In order to solve the problem that during the sampling process of the instrument channel of an endoscope at the corresponding part of the body, the previous sample contaminates the next sample, the present application provides an instrument tube, an endoscope and a sampling method.

[0005] In a first aspect, the present application provides an instrument tube, which adopts the following technical solution:

[0006] An instrument tube includes an instrument tube body;

[0007] A separator, at least one separator is provided, the separator is located in the instrument channel of the instrument tube body, the separator is extended along the axial direction of the instrument channel, and the two ends of the separator respectively extend to the distal port and the proximal port of the instrument channel, so that the instrument channel is divided into at least two parallel insertion channels by the separator, wherein any of the separators can be deformed by force on its opposite sides to change the cross-sectional size of the insertion channel on the corresponding side separated by the separator.

[0008] Preferably, the separator is provided in multiple pieces;

[0009] The separators are arranged at intervals along the radial direction of the instrument channel, and both side edges of each separator are fixedly connected to the inner side wall of the instrument channel;

[0010] Or the separators are arranged to cross each other, and both side edges of each separator are fixedly connected to the inner side wall of the instrument channel.

[0011] Preferably, the separator is provided as a single piece, and both side edges of the separator are fixedly connected to the inner side wall of the instrument channel, so that the instrument channel is divided into a first channel and a second channel, and the separator is capable of being deformed by force toward opposite sides thereof to switch between the first position and the second position;

[0012] When the separator is in the first position, the separator is attached to the inner wall of the instrument channel of the instrument tube body, the first channel is in a closed state, and the second channel is in an open state;

[0013] When the separator is in the second position, the separator is deformed and adheres to the opposite inner wall of the instrument channel of the instrument tube body, the second channel is in a closed state, and the first channel is in an open state.

[0014] Preferably, at least a portion of the separator sheet is a first shape memory alloy sheet;

[0015] When the first shape memory alloy sheet does not reach the preset trigger temperature, the first shape memory alloy sheet is in an initial state, and the separator is located at the first position;

[0016] When the first shape memory alloy sheet reaches a preset trigger temperature, the first shape memory alloy sheet returns to a preset shape, and the separator is located at the second position.

[0017] Preferably, a negative pressure suction tube is connected to one side of the instrument tube body, an extended spacer is arranged inside the negative pressure suction tube, the distal end of the extended spacer is smoothly connected to one side of the spacer, and the two side edges of the extended spacer are respectively fixedly connected to the inner wall of the negative pressure suction tube.

[0018] Preferably, the extended spacer divides the negative pressure suction tube into a third channel and a fourth channel, and the third channel and the fourth channel are laterally connected and communicated with the first channel and the second channel respectively;

[0019] The extended spacer can be deformed by force toward two opposite sides thereof to switch between a third position and a fourth position;

[0020] When the extended diaphragm is in the third position, the extended diaphragm is attached to the inner wall of the negative pressure suction tube on one side, the third channel is in a closed state, and the fourth channel is in an open state and can communicate with the second channel in an open state;

[0021] When the extended diaphragm is in the fourth position, the extended diaphragm is deformed to the other side and fits to the inner wall of the negative pressure suction tube, the fourth channel is in a closed state, and the third channel is in an open state and can be connected to the first channel in an open state.

[0022] Preferably, all of the extended spacers are second shape memory alloy sheets;

[0023] Or, the portion of the extended spacer is a second shape memory alloy sheet;

[0024] In the case where the portion of the extended spacer is a second shape memory alloy sheet,

[0025] The proximal end of the extended spacer is a second shape memory alloy sheet, the distal end and the proximal end of the spacer are first shape memory alloy sheets, and the rest of the spacer and the extended spacer are both soft membrane sheets;

[0026] When the second shape memory alloy sheet does not reach the preset trigger temperature, the second shape memory alloy sheet is in an initial state, and the extended spacer is located at the third position;

[0027] When the second shape memory alloy sheet reaches a preset trigger temperature, the second shape memory alloy sheet returns to a preset shape, and the extended spacer is located at the fourth position;

[0028] During the process in which the negative pressure suction tube is configured to be in a negative pressure state:

[0029] The soft membrane portion of the separator is transformed from the first position to the second position, and the soft membrane portion of the extension separator is transformed from the third position to the fourth position;

[0030] Or the soft membrane portion of the separator is transformed from the second position to the first position, and the soft membrane portion of the extension separator is transformed from the fourth position to the third position.

[0031] Preferably, the proximal end of the instrument tube body is connected to an instrument mouth, the partition plate is extended to the mouth of the instrument mouth, the instrument mouth is covered with an instrument plug, the instrument plug is provided with a through hole along the axial direction, a membrane flap is provided in the through hole, the membrane flap closes the through hole, a slit is provided on the membrane flap, and the slit is normally closed.

[0032] In a second aspect, the present application provides an endoscope, which adopts the following technical solution:

[0033] An endoscope comprises an instrument tube as described in the above technical solution.

[0034] In a third aspect, the present application provides a sampling method, which adopts the following technical solution:

[0035] A sampling method, applicable to an instrument tube or endoscope described in the above technical solution, comprises the following steps:

[0036] S1: Determine the number of sampling sites, and then select an instrument tube with a number of insertion channels not less than the number of sampling sites;

[0037] S2: Select a sampling site for the first sampling;

[0038] S3: Perform subsequent sampling, where:

[0039] When a sampling site that has been sampled needs to be sampled again, the disposal instrument is inserted again into the insertion channel used for sampling the corresponding sampling site to sample, or the disposal instrument is inserted into other insertion channels that have not been used to sample;

[0040] When sampling is required at a sampling site different from that sampled previously, the treatment instrument is inserted into an unused insertion channel to perform sampling.

[0041] The present invention has the following advantages and beneficial effects:

[0042] The present invention provides a separator in the instrument tube body, so that the separator divides the instrument channel into multiple parallel insertion channels, and at the same time, the separator can adjust the size of the insertion channel by deforming under force in a way of increasing and decreasing, thereby providing multiple channels for the disposal instrument to insert with a smaller instrument channel size. In this way, when sampling two different parts, the disposal instrument can use two different insertion channels to complete the sampling independently, thereby avoiding the problem of the previous sample contaminating the next sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 It is a structural schematic diagram intended to show one form of a separator that divides an instrument channel into multiple insertion channels.

[0045] Figure 2 It is a structural schematic diagram intended to show another form of a separator that divides an instrument channel into multiple insertion channels.

[0046] Figure 3It is a structural schematic diagram intended to show that a separator separates an instrument channel into a first channel and a second channel, and that the separator is in a first position in the instrument channel.

[0047] Figure 4 yes Figure 3 Enlarged view of part A.

[0048] Figure 5 It is a structural schematic diagram intended to show that a separator separates an instrument channel into a first channel and a second channel, and that the separator is in a second position in the instrument channel.

[0049] Figure 6 yes Figure 5 Magnified view of part B.

[0050] Figure 7 It is a structural schematic diagram intended to show that an extended diaphragm separates the negative pressure suction tube into a third channel and a fourth channel, and that the extended diaphragm is in a third position in the negative pressure suction tube.

[0051] Figure 8 It is a structural schematic diagram intended to show that an extended diaphragm separates the negative pressure suction tube into a third channel and a fourth channel, and that the extended diaphragm is in a fourth position in the negative pressure suction tube.

[0052] Fig. 9 It is a structural schematic diagram intended to show the endoscope as a whole and the position of the internal three-way joint of the endoscope.

[0053] Fig.10 yes Fig. 9 Magnified view of part C.

[0054] Fig.11 It is a schematic diagram for showing the structure of the separator being attached to the inner wall of the tee joint after the two halves of the tee joint explode.

[0055] Fig.12 yes Fig.11 Enlarged view of part D.

[0056] Fig.13 An exploded view of the separator, instrument tube body, and tee fitting to show the location of the tee fitting.

[0057] Fig.14 It is a schematic diagram for showing the structure of the first shape memory alloy sheet and the soft membrane sheet at the front end of the insertion part.

[0058] Fig.15 An exploded view showing the device mouth, device plug, and flap.

[0059] Fig.16 is an exploded view intended to show a two-piece tee fitting.

[0060] Fig.17 An exploded view showing the mounting rod, separator, and instrument tube body.

[0061] Fig.18 It is a schematic diagram intended to show the structure of a separator sheet attached to a mounting rod and used for installation into an instrument channel.

[0062] Fig.19 yes Fig.18 Enlarged view of part E.

[0063] The markings in the figure are:

[0064] 1. Instrument tube body; 11. Instrument channel;

[0065] 2. separator; 21. first shape memory alloy sheet; 22. soft film sheet; 23. adhesive storage tank;

[0066] 3. Insertion channel; 31. First channel; 32. Second channel; 33. Third channel; 34. Fourth channel;

[0067] 41, first position; 42, second position; 43, third position; 44, fourth position;

[0068] 5. Negative pressure suction tube; 51. Extended spacer; 511. Second shape memory alloy sheet;

[0069] 6. Instrument mouth; 61. Instrument plug; 611. Through hole; 612. Membrane flap; 6121. Cutting slit;

[0070] 7. handle; 71. insertion part;

[0071] 8. Three-way joint; 81. Solid glue;

[0072] 9. Install the rod;

[0073] P, deformation direction of the soft membrane; Q, negative pressure suction direction; U, insertion direction of the treatment instrument. DETAILED DESCRIPTION

[0074] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0075] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0076] Combine the following Figures 1 to 19 An instrument tube, an endoscope and a sampling method provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0077] An instrument tube comprises an instrument tube body 1, which is installed in an insertion portion 71 of an endoscope. The invention aims to solve the problem that a previous sample contaminates a subsequent sample during the process of inserting a treatment instrument from an instrument channel 11 and sampling a corresponding part of a body.

[0078] As an optional embodiment, the separator 2 is installed in the instrument channel 11 of the instrument tube body 1. The number of separators 2 is at least one. The separator 2 is extended along the axial direction of the instrument channel 11. The two ends of the separator 2 extend to the distal port and the proximal port of the instrument channel 11 respectively, so that the disposal instrument is withdrawn from the instrument channel 11 when any one of the insertion channels 3 is pushed out.

[0079] If the separator 2 does not extend to the distal end of the instrument channel 11, the sampled lesion tissue may remain in the distal end of the instrument channel 11. Since the treatment instrument is exposed to the distal end of the instrument channel 11 during the use of different insertion channels 3, it may come into contact with the residual lesion tissue and cause contamination.

[0080] Similarly, if the separator 2 does not extend to the proximal end of the instrument channel 11, the sampled lesion tissue may remain in the proximal end of the instrument channel 11. Since the treatment instrument is exposed to the proximal end of the instrument channel 11 during the use of different insertion channels 3, it may come into contact with the residual lesion tissue and cause contamination.

[0081] Therefore, only after the two ends of the separation sheet 2 extend to the distal port and the proximal port of the instrument channel 11 , the instrument channel 11 can be completely separated into at least two parallel and relatively independent insertion channels 3 .

[0082] Any separator 2 can be deformed by force to its two opposite sides to change the cross-sectional size of the insertion channel 3 on the corresponding side separated by the separator 2. In order to adapt to the deformation of the separator 2, the material of the separator 2 can be selected from memory alloy, nylon material, polyvinyl chloride, ultra-high molecular weight polyethylene and thermoplastic elastomer, mainly because these materials have very good wear resistance, mechanical properties, wear resistance and elasticity.

[0083] Specifically, when the treatment instrument is inserted along any of the insertion channels 3, the treatment instrument will squeeze the partition sheet 2 surrounding the insertion channel 3, causing the partition sheet 2 to deform away from the insertion channel 3 and increase the cross-sectional size of the insertion channel 3, thereby facilitating the insertion of the treatment instrument. At the same time, the cross-sectional sizes of other insertion channels 3 surrounded by the partition sheet 2 will shrink as a result of the deformation.

[0084] It should be noted that the deformation of the separator 2 can be active deformation or passive deformation. The active deformation can be achieved by driving the separator 2 to deform by the shape memory alloy. The passive deformation can be achieved by the treatment instrument stretching the separator 2 during the insertion process, or by negative pressure driving or pulling the separator 2 with a pull rope. When the separator 2 adopts the passive deformation mode of negative pressure driving or pulling with a pull rope, the treatment instrument is preferably inserted into the insertion channel 3 after the separator 2 is deformed, so as not to affect the normal deformation of the separator 2.

[0085] By arranging a separator in the instrument tube body, the separator divides the instrument channel into multiple parallel insertion channels, and the separator can adjust the size of the insertion channel by deforming under force in a way of increasing or decreasing the size of the insertion channel, so that a plurality of channels for selective insertion are provided for the treatment instrument with a smaller instrument channel size. In this way, when sampling two different or the same parts, the treatment instrument can selectively use two different insertion channels to complete the sampling independently, so as to avoid the problem of the previous sample contaminating the next sample.

[0086] As an optional embodiment, the number of separators 2 is one, and the separator 2 is preferably located at the center of the instrument tube body 1, but can also be located at other non-center positions. When the separator is in the middle position, the instrument channel 11 can be divided into two parallel insertion channels 3 of the same size.

[0087] like Figure 2As shown, as an optional embodiment, the number of separators 2 is multiple, such as two, three, four, etc. All separators 2 are arranged at intervals along the radial direction of the instrument channel 11, and the separators 2 are arranged parallel to each other. The side edges of each separator 2 are fixed to the inner side wall of the instrument channel 11, wherein the side edges of the separator 2 are the side walls in the width direction of the separator 2. When inserting the treatment instrument, it is only necessary to control the separator 2 at the insertion channel 3 to deform outwards.

[0088] Alternatively, when the partition sheet 2 at the position of the insertion channel 3 is controlled, the partition sheets 2 at other positions are deformed accordingly, thereby enlarging the insertion channel 3 for inserting the treatment instrument.

[0089] As an optional embodiment, both side edges of each separator sheet 2 are bonded to the inner side wall of the instrument channel 11 by using high-strength solid glue.

[0090] As an optional embodiment, when there are multiple separators 2, the separators 2 can be arranged to cross each other, and the intersection can be as follows: Figure 1 The one shown may also be multiple. Both side edges of each separator 2 are fixedly connected to the inner side wall of the instrument channel 11, wherein the both side edges of the separator 2 are the both side walls in the width direction of the separator 2. The intersection between multiple separators 2 and the inside of the instrument channel will be divided into multiple insertion channels 3 to facilitate the insertion of the treatment instrument. Similarly, when inserting the treatment instrument, it is only necessary to control the separator 2 at the position of the insertion channel 3 to deform outward or the separators 2 at other positions to deform accordingly, so that the insertion channel 3 for the treatment instrument can be enlarged.

[0091] As an optional embodiment, Figure 3 and Figure 5 As shown, the separator 2 is installed as one piece. When one separator 2 is installed, the separator 2 can minimize the occupancy of the instrument channel 11 to facilitate the insertion of the treatment instrument. The two side edges of the separator 2 are fixedly connected to the inner wall of the instrument channel 11 so that the instrument channel 11 is divided into a first channel 31 and a second channel 32, and the separator 2 has a first position 41 and a second position 42.

[0092] Specifically, when the separator 2 is in the first position 41, the separator 2 is attached to the inner side wall of the instrument channel 11 of the instrument tube body 1, the first channel 31 is in a closed state, the second channel 32 is in an open state, and the space formed by the second channel 32 in the instrument channel 11 of the instrument tube body 1 is in a maximum cross-sectional shape; when the separator 2 is in the second position 42, the separator 2 is deformed and attached to the opposite inner side wall of the instrument channel 11 of the instrument tube body 1, the second channel 32 is in a closed state, the first channel 31 is in an open state, and the space formed by the first channel 31 in the instrument channel 11 of the instrument tube body 1 is in a maximum cross-sectional shape.

[0093] The partition plate 2 is projected in a semicircular shape along the axial direction of the instrument tube body 1 , so that the partition plate 2 can be switched between the first position 41 and the second position 42 .

[0094] As an optional embodiment, at least part of the separator 2 is made of the first shape memory alloy sheet 21. Specifically, the separator 2 can be the first shape memory alloy sheet 21, or a plurality of separators can be arranged at intervals along the axial direction of the separator 2. When the first shape memory alloy sheet 21 is deformed, the entire separator 2 will be deformed and switch between the first position 41 and the second position 42. Of course, the separator 2 can be made of the first shape memory alloy sheet 21 along the circumferential direction, and its projected circumferential length along its own axial direction is preferably not less than half of its own circumference, so as to better drive the separator 2 to deform. When the first shape memory alloy sheet 21 does not reach the preset trigger temperature, the first shape memory alloy sheet 21 is in the initial state, and the separator 2 is located at the first position 41; when the first shape memory alloy sheet 21 reaches the preset trigger temperature, the first shape memory alloy sheet 21 returns to the preset shape, and the separator 2 is located at the second position 42.

[0095] like Fig. 9 and Fig.10 As shown, it is worth pointing out that a negative pressure suction tube 5 is installed on one side of the instrument tube body 1. Specifically, the negative pressure suction tube 5 is installed on the instrument tube body 1 through a three-way joint 8. The negative pressure suction tube 5, the three-way joint 8 and the inner wall of the instrument tube body 1 are smoothly arranged. An extended spacer 51 is installed in the negative pressure suction tube 5. The extended spacer 51 can extend the length of one side of the partition plate 2. During the sampling process, the extended spacer 51 can play an isolation role to prevent the sampled sample from falling at the intersection of the negative pressure suction tube 5 and the instrument tube body 1 and contaminating subsequent sampling.

[0096] As an optional embodiment, when installing the separator 2, Fig.16As shown, the three-way connector 8 is a three-way connector 8 divided into two halves, and the mounting rod 9 is used. The shape of the mounting rod 9 is the same as the bifurcation shape of the instrument tube body 1 and the negative pressure suction tube 5. First, the separator 2 is attached to one side of the mounting rod 9, and then the distal end of the mounting rod 9 is inserted into the instrument channel 11 and inserted along the proximal instrument tube body 1 to the distal end of the instrument tube body 1. The proximal bifurcation of the mounting rod 9 is attached to the inner wall of the three-way connector 8 and the inner wall of the negative pressure suction tube 5 at the same time, and wait for the installation to be completed. Figure 3-5 After the solid glue 81 shown is bonded to the inner wall of the instrument channel 11 and the inner wall of the negative pressure suction tube 5, the installation rod 9 is rotated to avoid the bifurcation of the three-way joint 8 at the position of the instrument plug 61, and the installation rod 9 is taken out, thereby realizing the installation of the partition plate 2 at the insertion position.

[0097] The extended spacer 51 at the position of the negative pressure suction tube 5 only needs to be inserted into the negative pressure suction tube 5, and the two side edges in the width direction of the extended spacer 51 are bonded to the inner wall of the negative pressure suction tube 5. The partition 2 in the instrument tube body 1 at the other end outlet of the three-way joint 8 is also bonded and fixed to the inner wall of the instrument tube body 1. Finally, the two halves of the three-way joint 8 are fitted together and fixed with bolts. In order to achieve a sealing effect, sealant can be added between the two halves of the three-way joint 8.

[0098] As an optional embodiment, when selecting the solid glue 81, UV glue (ultraviolet light curing glue) can be selected. It is only necessary to make the mounting rod 9 into a transparent hollow shape and install ultraviolet light inside. When the UV glue is exposed to ultraviolet light of a specific wavelength, the photoinitiator is activated, causing the monomers and oligomers to undergo a polymerization reaction to form a cured glue layer.

[0099] As an optional embodiment, in order to avoid the situation that the solid glue 81 is not easy to be fixed on the edge position of the extension spacer 51 and the separation sheet 2 in the width direction, as shown in FIG. Figure 4 and Figure 6 As shown, a glue containing groove 23 is preset along the axial direction at the edge position of the width direction of the extending spacer 51 and the separating sheet 2 , and the solid glue 81 is placed in the glue containing groove 23 .

[0100] The projection shape of the extended spacer 51 along the axial direction of the instrument tube body 1 is the same as the projection shape of the separator 2 along the axial direction of the instrument tube body 1. The distal end of the extended spacer 51 is smoothly connected to one side of the separator 2. The side edges of the extended spacer 51 are respectively fixedly connected to the inner side wall of the negative pressure suction tube 5. At the same time, the extended spacer 51 is projected in a semicircular shape along the axial direction of the instrument tube body 1, so that the extended spacer 51 can switch positions with the separator 2. The plane where the connection position of the extended spacer 51 and the negative pressure suction tube 5 is located, the plane where the connection position of the separator 2 and the instrument tube body 1 is located, and the plane where the center line of the instrument tube body 1 and the negative pressure suction tube 5 is located coincide with each other, and this position just divides the instrument tube body 1 and the negative pressure suction tube 5 into two halves.

[0101] like Fig.13 and Fig.14 As shown, at least a part of the extended spacer 51 is a second shape memory alloy sheet 511 . When the extended spacer 51 is entirely a second shape memory alloy sheet 511 , it is convenient for the extended spacer 51 to switch positions. The extended diaphragm 51 divides the negative pressure suction tube 5 into a third channel 33 and a fourth channel 34. The third channel 33 is connected to the first channel 31, and the fourth channel 34 is connected to the second channel 32. The extended diaphragm 51 has a third position 43 and a fourth position 44. The third position 43 corresponds to the first position 41, and the fourth position 44 corresponds to the second position 42. When the extended diaphragm 51 is in the third position 43, the third channel 33 is in a closed state, the fourth channel 34 is in an open state, and the extended diaphragm 51 is attached to the inner wall of the negative pressure suction tube 5. When the extended diaphragm 51 is in the fourth position 44, the fourth channel 34 is in a closed state, the third channel 33 is in an open state, and the extended diaphragm 51 is deformed and attached to the opposite inner wall of the negative pressure suction tube 5. When the extended diaphragm 51 is attached to the inner wall of the negative pressure suction tube 5, the channel of the negative pressure suction tube 5 is at the maximum cross-sectional area, so as to facilitate the negative pressure suction of liquid by the endoscope.

[0102] As an optional embodiment, Fig.17 As shown, the second shape memory alloy sheet 511 can be installed in the three-way joint 8 without extending into the negative pressure suction tube 5. The negative pressure suction tube 5 can be directly installed on the port of the three-way joint 8. In this solution, installation time is saved while cost is saved.

[0103] Preferably, the distal end of the separator 2 and the proximal end of the separator 2 are the first shape memory alloy sheet 21, the proximal end of the extended separator 51 is the second shape memory alloy sheet 511, and the rest of the separator 2 and the extended separator 51 are the soft film 22, and the soft film 22 can be made of materials such as polyvinyl chloride and polyethylene terephthalate.

[0104] Specifically, the deformation direction P of the soft membrane 22 is as follows: Fig.13As shown, in order to facilitate the conversion of the soft membrane 22 from the first position 41 to the second position 42, or from the second position 42 to the first position 41, since the negative pressure suction tube 5 itself is installed on the negative pressure device outside the endoscope, and is used to suck the liquid in the body cavity from the front end of the insertion portion 71 of the endoscope, the negative pressure state in the negative pressure suction tube 5 can be used to convert the soft membrane 22 part of the separator 2 from the first position 41 to the second position 42, and the soft membrane 22 part of the extended separator 51 will be converted from the third position 43 to the fourth position 44; or the soft membrane 22 part of the separator 2 will be converted from the second position 42 to the first position 41, and the soft membrane 22 part of the extended separator 51 will be converted from the fourth position 44 to the third position 43. Naturally, the soft membrane 22 part of the separator 2 and the soft membrane 22 part of the extended separator 51 are switched to the second position 42, and finally the second shape memory alloy sheet 511 at the proximal end of the extended separator 51 is adjusted to switch to the fourth position 44, and the second channel 32 and the fourth channel 34 are connected and opened, and the disposal instrument can be inserted into the second channel 32 for sampling.

[0105] It is particularly important to point out that the negative pressure suction direction Q is as follows Fig.13 As shown, in this process, the temperature triggering time of the second shape memory alloy sheet 511 at the proximal end of the extended spacer 51 needs to be later than the temperature triggering time of the first shape memory alloy sheet 21 at the distal end and the proximal end of the spacer 2. At this time, the channels that need to be deformed at the distal and proximal ends of the instrument channel 11 will form a seal, and under the negative pressure state, the soft membrane 22 will deform toward the negative pressure side and fit on the inner wall of the instrument tube body 1 and the negative pressure suction tube 5. Finally, after the second shape memory alloy sheet 511 at the proximal end of the extended spacer 51 is deformed, the channel on the deformed side will be sealed. In this way, when the negative pressure suction tube 5 and the instrument tube body 1 negatively suction the liquid in the body cavity, the soft membrane 22 will not rebound, thereby affecting the suction of the liquid in the body cavity.

[0106] As an optional embodiment, after the treatment instrument is inserted into the first channel 31 to complete sampling, the first shape memory alloy sheet 21 at the distal end of the separator 2 and the first shape memory alloy sheet 21 at the proximal end of the separator 2 can be regulated by electric heating to reach a preset trigger temperature, so that the first shape memory alloy sheet 21 and the second shape memory alloy sheet 511 at these two positions are deformed and switched to the second position 42 and the fourth position 44, thereby closing the position.

[0107] As an optional embodiment, Figure 15-17As shown, the proximal end of the instrument tube body 1 is connected to an instrument mouth 6, which is installed at the front end of the handle 7. The separator 2 is extended to the mouth of the instrument mouth 6. The side edges of the separator 2 at the position of the instrument mouth 6 in the width direction are fixedly connected to the inner wall of the instrument mouth 6. Due to the existence of the instrument mouth 6, the insertion of the disposal instrument can be convenient, and an instrument plug 61 is provided on the upper cover of the instrument mouth 6. The instrument plug 61 is threadedly sleeved on the instrument mouth 6 to facilitate the removal of the instrument plug 61.

[0108] In addition, a through hole 611 is opened in the middle position of the instrument plug 61 along the axial direction, and a membrane flap 612 is installed in the through hole 611. The membrane flap 612 is located at the opening position of the through hole 611. The membrane flap 612 is made of elastic rubber. The surrounding walls of the membrane flap 612 can be bonded to the surrounding walls of the through hole 611 by strong solid glue to ensure the sealing of the outer wall of the membrane flap 612 and the through hole 611, so as to achieve the closure of the through hole 611 by the membrane flap 612. A slit 6121 is opened on the membrane flap 612, and the slit 6121 is normally closed.

[0109] Specifically, the slit 6121 has two states: closed and open. When the slit 6121 is in the closed state, the membrane flap 612 is actually set to close the through hole 611. When the slit 6121 is in the open state, the treatment instrument passes through the slit 6121 and the slit 6121 is opened by the treatment instrument. Due to the existence of the membrane flap 612, the position of the instrument plug 61 can be in a sealed state, so that the negative pressure suction tube 5 and the instrument tube body 1 can normally negatively pressure suck the liquid in the body cavity.

[0110] As an optional embodiment, an endoscope includes an instrument tube of the above technical solution, and the instrument tube is installed in the insertion portion 71 of the endoscope. Naturally, during use, the instrument tube can be used independently of the endoscope. For example, when sampling the oral cavity or the upper end of the throat, since the eyes can observe the oral cavity or the upper end of the throat, the position can be sampled directly by using the instrument tube in combination with the disposal instrument.

[0111] It should also be emphasized that the endoscope in the embodiments of the present application can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose specific restrictions on the type of endoscope.

[0112] As an optional embodiment, the present application provides a sampling method, which adopts the following technical solution:

[0113] A sampling method, applicable to an instrument tube or endoscope of the above technical solution, comprises the following steps:

[0114] S1: Determine the number of sampling sites, and then select an instrument tube with a number of insertion channels 3 that is not less than the number of sampling sites. For example, if the number of sampling sites is 4, the number of insertion channels 3 of the instrument tube should be no less than 4, and 5, 6, 7 or more can be selected. This is mainly because in the process of sampling at the same site, lesion tissues at multiple locations of the same site may be involved. In order to avoid contamination, each lesion naturally requires an insertion channel 3.

[0115] S2: Select a sampling site for the first sampling; for example, the stomach site for the first sampling.

[0116] S3: Perform subsequent sampling, where:

[0117] When a sampling site that has been sampled needs to be sampled again, the treatment instrument is inserted into the insertion channel 3 used for sampling the corresponding sampling site again for sampling, or the treatment instrument is inserted into other unused insertion channels 3 for sampling. For example, when sampling the same lesion in the stomach, since subsequent sampling will not be contaminated by the previous sample, multiple sampling can be performed through the same insertion channel 3; if different lesions in the same area of ​​the stomach are sampled and the samples need to be tested separately, multiple sampling from different insertion channels 3 is required.

[0118] When sampling is required at a sampling site different from the last sampling site, the treatment instrument is inserted into an insertion channel 3 different from the last sampling site and not used for sampling other sampling sites for sampling. For example, when sampling the stomach and lungs, when sampling through the lungs, it is necessary to insert a different insertion channel therein for sampling, and when sampling through the stomach, it is necessary to sample other different insertion channels, thereby avoiding contamination.

[0119] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An instrument tube, characterized in that: include: The instrument tube body (1); A separator (2), wherein one separator (2) is provided, and the separator (2) is located in the instrument channel (11) of the instrument tube body (1), and the separator (2) is extended along the axial direction of the instrument channel (11), and the two ends of the separator (2) respectively extend to the distal port and the proximal port of the instrument channel (11), and the two side edges of the separator (2) are fixedly connected to the inner side wall of the instrument channel (11) so that the instrument channel (11) is divided into a first channel (31) and a second channel (32), and the separator (2) has the ability to be deformed by force on opposite sides thereof so as to switch between a first position (41) and a second position (42); When the partition sheet (2) is in the first position (41), the partition sheet (2) is attached to the inner wall of the instrument channel (11) of the instrument tube body (1), the first channel (31) is in a closed state, and the second channel (32) is in an open state; When the separator (2) is in the second position (42), the separator (2) is deformed and adheres to the opposite inner wall of the instrument channel (11) of the instrument tube body (1), the second channel (32) is in a closed state, and the first channel (31) is in an open state.

2. The instrument tube according to claim 1, characterized in that: At least a portion of the separator (2) is a first shape memory alloy sheet (21); When the first shape memory alloy sheet (21) has not reached a preset trigger temperature, the first shape memory alloy sheet (21) is in an initial state, and the separator sheet (2) is located at the first position (41); When the first shape memory alloy sheet (21) reaches a preset trigger temperature, the first shape memory alloy sheet (21) returns to a preset shape, and the separator sheet (2) is located at the second position (42).

3. The instrument tube according to claim 2, characterized in that: A negative pressure suction tube (5) is provided in communication with one side of the instrument tube body (1), and an extension spacer (51) is provided inside the negative pressure suction tube (5). The distal end of the extension spacer (51) is smoothly connected to one side of the separation plate (2), and the side edges of the extension spacer (51) are respectively fixedly connected to the inner side wall of the negative pressure suction tube (5).

4. The instrument tube according to claim 3, characterized in that: The extended spacer (51) divides the negative pressure suction tube (5) into a third channel (33) and a fourth channel (34); the third channel (33) and the fourth channel (34) are laterally connected and communicated with the first channel (31) and the second channel (32), respectively; The extended spacer (51) can be deformed by force on two opposite sides thereof to switch between a third position (43) and a fourth position (44); When the extended spacer (51) is in the third position (43), the extended spacer (51) is attached to the inner wall of the negative pressure suction tube (5) on one side, the third channel (33) is in a closed state, and the fourth channel (34) is in an open state and can communicate with the second channel (32) in an open state; When the extended spacer (51) is in the fourth position (44), the extended spacer (51) is deformed to the other side and adheres to the inner wall of the negative pressure suction tube (5), the fourth channel (34) is in a closed state, and the third channel (33) is in an open state and can communicate with the first channel (31) in an open state.

5. The instrument tube according to claim 4, characterized in that: The entirety of the extended spacer (51) is a second shape memory alloy sheet (511); Or, the portion of the extended spacer (51) is a second shape memory alloy sheet (511); In the case where the portion of the extended spacer (51) is the second shape memory alloy sheet (511), The proximal end of the extended spacer (51) is a second shape memory alloy sheet (511), the distal end and the proximal end of the separator (2) are first shape memory alloy sheets (21), and the remaining parts of the separator (2) and the extended spacer (51) are both soft membrane sheets (22); When the second shape memory alloy sheet (511) has not reached a preset trigger temperature, the second shape memory alloy sheet (511) is in an initial state, and the extended spacer (51) is located at the third position (43); When the second shape memory alloy sheet (511) reaches a preset trigger temperature, the second shape memory alloy sheet (511) returns to a preset shape, and the extended spacer (51) is located at the fourth position (44); During the process of configuring the negative pressure suction tube (5) to be in a negative pressure state: The soft membrane (22) portion of the separator (2) is transformed from the first position (41) to the second position (42), and the soft membrane (22) portion of the extended separator (51) is transformed from the third position (43) to the fourth position (44); Or the soft membrane (22) portion of the separator (2) is converted from the second position (42) to the first position (41), and the soft membrane (22) portion of the extended separator (51) is converted from the fourth position (44) to the third position (43).

6. An instrument tube according to claim 4 or 5, characterized in that: The proximal end of the instrument tube body (1) is connected to an instrument mouth (6), the partition sheet (2) is extended to the mouth of the instrument mouth (6), the upper cover of the instrument mouth (6) is provided with an instrument plug (61), the instrument plug (61) is provided with a through hole (611) in the axial direction, a membrane flap (612) is provided in the through hole (611), the membrane flap (612) is provided to seal the through hole (611), a slit (6121) is provided on the membrane flap (612), and the slit (6121) is normally closed.

7. An endoscope, characterized in that: The device tube comprises the device tube according to any one of claims 1 to 6.

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