Endoscopic device with imaging and sampling functions

Abstract

The present invention provides an endoscopic device with imaging and sampling functions, relating to the field of medical devices. The device comprises: a front-end accommodating portion, an adapter, an imaging portion, a sampling portion, a driving portion, an illuminating portion, a liquid injection portion, a suction portion, and a protective sleeve. The front-end accommodating portion is cylindrical, with a square through-hole formed in the middle thereof. A first cylindrical through-hole, a second cylindrical through-hole, a third cylindrical through-hole, and a fourth cylindrical through-hole are formed above, below, to the left, and to the right of the square through-hole, respectively. The imaging portion is disposed within the first through-hole, the illuminating portion is disposed within the second through-hole, the liquid injection portion is disposed within the third through-hole, the suction portion is disposed within the fourth through-hole, and the sampling portion is disposed within the square through-hole. The sampling portion can obtain multiple samples with a single entry, thereby improving the convenience of the sampling process. A flexible blade isolates the sample from the external environment, making the sample relatively clean and improving the accuracy of the test results.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an endoscopic device with imaging and sampling functions. Background Art

[0002] Existing sampling endoscopes often use a sampling forceps as the sampling device. Each sampling operation can only obtain a sample from a single location, making it impossible to sample multiple locations within the patient. To obtain multiple samples, the previous sample must be removed and re-entered, creating inconvenience for both medical staff and patients. Furthermore, the exposed nature of the sampling forceps can lead to contamination of the sample during entry and exit due to the introduction of body fluids from different locations, resulting in inaccurate test results. Therefore, achieving a single entry of a sampling endoscope to obtain multiple, relatively clean samples remains a challenge. Summary of the Invention

[0003] In order to address the shortcomings of the existing technology, the present invention provides an endoscopic device with imaging and sampling functions, which is used to solve the technical problems that the sampling endoscope in the existing technology cannot achieve sampling at multiple different patient locations, causing inconvenience to medical staff and patients, and there is a risk of contaminating the sampling samples, thereby affecting the accuracy of the sample detection results.

[0004] To achieve the above objectives, the following technical solutions are adopted:

[0005] An endoscope device with imaging and sampling functions, comprising: a front end receiving portion, an adapter, an imaging portion, a sampling portion, a driving portion, an illumination portion, a liquid injection portion, a suction portion, and a protective sleeve;

[0006] The front end accommodating portion is a cylinder, with a square through hole formed in the middle thereof, and a cylindrical first through hole, a second through hole, a third through hole, and a fourth through hole formed above, below, to the left, and to the right of the square through hole, respectively; the imaging portion is provided on the inner side of the first through hole, the lighting portion is provided on the inner side of the second through hole, the liquid injection portion is provided on the inner side of the third through hole, the suction portion is provided on the inner side of the fourth through hole, and the sampling portion is provided on the inner side of the square through hole;

[0007] The adapter is a hollow cylinder, the inner diameter of which is larger than the outer diameter of the front end receiving portion; a hollow ring and a support arm are provided inside the adapter, and the hollow ring is fixedly connected to the inner wall of the adapter through the support arms provided on both sides;

[0008] The front end of the adapter is fixedly sleeved with the front end accommodating portion, and the rear end of the adapter is fixedly sleeved with the protective sleeve; the driving portion is fixedly arranged inside the hollow ring, and the driving rod of the driving portion is connected to the sampling portion.

[0009] Optionally, the sampling portion includes an end cap, a rectangular body, a conical head, a movable column, a flexible blade, an upper drive plate, a lower drive plate, and a drive gear; the end cap is connected to the rectangular body; the conical head, the movable column, the upper drive plate, the lower drive plate, and the drive gear are disposed inside the rectangular body; the conical head is disposed on the movable column; and the movable column is connected to the upper drive plate and the lower drive plate via the drive gear;

[0010] The longitudinal cross-section of the end cap is arched, and its bottom surface is square; a sampling through-hole is provided in the middle of the end cap; an upper arch groove and a lower arch groove are provided inside the end cap, and the curvature of the upper arch groove and the lower arch groove is the same as the curvature of the top surface of the end cap; the cross-sections of the upper arch groove and the lower arch groove are both rectangular, and the upper arch groove extends from the upper side of the bottom surface of the end cap to the middle of the top surface of the end cap, and the lower arch groove extends from the lower side of the bottom surface of the end cap to the middle of the top surface of the end cap; the upper arch groove and the lower arch groove are connected to the top surface of the end cap; the flexible blade on the upper side can be slidably arranged on the inner side of the upper arch groove, and the flexible blade on the lower side can be slidably arranged on the inner side of the lower arch groove; the flexible blade is connected to the left side of the upper driving plate and the lower driving plate;

[0011] The movable column can drive the conical head, the upper driving plate and the lower driving plate to move;

[0012] The movable column drives the conical head to extend out of the end cap along the sampling through hole. At this time, the upper driving plate and the lower driving plate are close to the right side of the rectangular body, and the upper and lower flexible blades are retracted into the interior of the rectangular body, and the sampling through hole is in an open state;

[0013] The movable column drives the conical head to retract the end cap along the sampling through hole. At this time, the upper driving plate and the lower driving plate are close to the left side of the rectangular body, and the flexible blades on the upper and lower sides enter the sampling through hole along the arched groove, and the sampling through hole is in a closed state.

[0014] Optionally, a driving through hole is provided in the middle of the rectangular main body, and an upper rectangular guide hole and a lower rectangular guide hole of the same size are symmetrically provided on the upper and lower sides of the driving through hole; a gear hole is provided between the upper rectangular guide hole and the driving through hole, and between the lower rectangular guide hole and the driving through hole, and the gear holes on the upper and lower sides are symmetrically provided, and the gear holes are through holes; a gear groove is provided inside the gear hole, and the terminals on both sides of the driving gear are provided in the gear groove; the driving gear does not contact the gear hole; and limiting sliding grooves of the same size are symmetrically provided on the left and right sides of the driving through hole.

[0015] Optionally, the movable column is a cylinder, the movable column is in clearance fit with the driving through hole, and the movable column can be slidably arranged on the inner side of the driving through hole; the upper and lower sides of the movable column are provided with a first straight tooth; the left and right sides of the movable column are provided with a limiting slider, and the limiting slider is in clearance fit with the limiting slide groove; the bottom of the movable column is provided with a driving hole; the top of the movable column is provided with the conical head, and a connecting thin rod is provided between the conical head and the movable column.

[0016] Optionally, the driving through hole and the sampling through hole have the same size and are concentrically arranged; the upper rectangular guide hole corresponds to the position of the upper arched groove, and the lower rectangular guide hole corresponds to the position of the lower arched groove.

[0017] Optionally, the upper driving plate and the lower driving plate are rectangular plates of the same size, and the inward sides of the upper driving plate and the lower driving plate are both provided with second straight teeth; the upper driving plate is slidably disposed inside the upper rectangular guide hole, and the lower driving plate is slidably disposed inside the lower rectangular guide hole;

[0018] The upper driving gear is respectively engaged with the second spur teeth on the upper side and the first spur teeth on the upper side; the lower driving gear is respectively engaged with the second spur teeth on the lower side and the first spur teeth on the lower side.

[0019] Optionally, the imaging unit includes a cylindrical probe, a guide, and a slot; a collimator and a sampling optical fiber are fixedly disposed inside the cylindrical probe; the guide is a rectangular parallelepiped and is located at the lower right side of the cylindrical probe; the slot is disposed on the guide;

[0020] A guide slot matching the guide member is provided on the upper right side of the rectangular body; a card block is provided on the upper side of the upper driving plate; the card block passes through the guide slot and is matched with the card slot; the upper driving plate can drive the imaging part to move inward or outward.

[0021] Optionally, the driving rod is connected to the driving hole in the movable column; the driving portion drives the movable column to perform telescopic movement via the driving rod.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] 1. The endoscopic device with imaging and sampling functions can obtain multiple samples with one entry, which improves the convenience of the sampling process. This greatly reduces the need for medical staff to repeat operations and improves the convenience and efficiency of sampling. The flexible blade isolates the sample from the external environment, reducing the contact with pollutants such as body fluids, thereby ensuring the cleanliness of the sample and improving the accuracy of the test results.

[0024] 2. The ingenious combination of the imaging and sampling sections allows the cylindrical probe to move backward when the upper drive plate moves, thereby expanding the field of view and the user's monitoring range of the sampling site. This helps medical staff observe the patient's internal conditions more clearly, improves the precision and accuracy of sampling, and provides convenient conditions for sampling.

[0025] 3. The overall structure of the endoscope is compact, with components working in tandem for easy operation. The adapter, front-end housing, and protective sleeve ensure stability and durability. The drive unit, connected by a drive rod and a movable column, precisely controls the sampling unit, ensuring a more stable and reliable sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of an endoscopic device with imaging and sampling functions provided by one embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the exploded structure of an endoscopic device with imaging and sampling functions provided by one embodiment of the present invention;

[0028] Figure 3 A schematic structural diagram of a front-end accommodation portion of an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0029] Figure 4 A schematic structural diagram of an adapter in an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0030] Figure 5 A schematic structural diagram of an imaging unit in an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0031] Figure 6 A schematic structural diagram of a sampling portion of an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0032] Figure 7 A schematic structural diagram of an end cap in an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0033] Figure 8 A schematic structural diagram of a rectangular main body of an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0034] Figure 9 A schematic structural diagram of a conical head and a movable column in an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0035] Figure 10A schematic structural diagram of a one-way blocking ring in an endoscope device with imaging and sampling functions provided by one embodiment of the present invention;

[0036] Figure 11 A schematic structural diagram of a sampling portion of an endoscope device with imaging and sampling functions before and after sampling provided by one embodiment of the present invention;

[0037] Figure 12 A schematic diagram of the structure of the sampling portion and the imaging portion of an endoscope device with imaging and sampling functions before and after sampling provided by one embodiment of the present invention;

[0038] Figure 13 A schematic structural diagram of an endoscope device with imaging and sampling functions in an initial state and a sampling state provided by one embodiment of the present invention;

[0039] Figure 14 This is a structural schematic diagram of an end cap and a rectangular body in an example of an endoscope device with imaging and sampling functions provided by one embodiment of the present invention.

[0040] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] like Figures 1-14 As shown, an embodiment of the present invention provides an endoscope device with imaging and sampling functions, comprising: a front end accommodating portion 1, an adapter 2, an imaging portion 3, a sampling portion 4, a driving portion 5, an illumination portion 6, a liquid injection portion 7, a suction portion 8, and a protective sleeve 9;

[0043] like Figure 3 As shown, the front end accommodating portion 1 is a cylinder, with a square through hole 11 provided in the middle thereof, and a cylindrical first through hole 12, a second through hole 13, a third through hole 14 and a fourth through hole 15 are provided on the upper, lower, left and right sides of the square through hole 11 respectively; the imaging portion 3 is provided on the inner side of the first through hole 12, the lighting portion 6 is provided on the inner side of the second through hole 13, the liquid injection portion 7 is provided on the inner side of the third through hole 14, the suction portion 8 is provided on the inner side of the fourth through hole 15, and the sampling portion 4 is provided on the inner side of the square through hole 11.

[0044] like Figure 4 As shown, the adapter 2 is a hollow cylinder, the inner diameter of which is larger than the outer diameter of the front end receiving portion 1; a hollow ring 21 and a support arm 22 are provided inside the adapter 2, and the hollow ring 21 is fixedly connected to the inner wall of the adapter 2 through the support arms 22 provided on both sides;

[0045] The front end of the adapter 2 is fixedly sleeved on the front end accommodating portion 1 , and the rear end of the adapter 2 is fixedly sleeved on the protective sleeve 9 ; the driving portion 5 is fixedly arranged inside the hollow ring 21 , and the driving rod 51 of the driving portion 5 is connected to the sampling portion 4 .

[0046] In the embodiment of the present invention, the stability and durability of the endoscope device are ensured by the arrangement of the adapter, the front end receiving portion and the protective sleeve.

[0047] Optionally, in some embodiments, Figure 6 As shown, the sampling portion 4 includes an end cap 41, a rectangular body 42, a conical head 43, a movable column 44, a flexible blade 45, an upper drive plate 46, a lower drive plate 47 and a drive gear 48; the end cap 41 is connected to the rectangular body 42; the conical head 43, the movable column 44, the upper drive plate 46, the lower drive plate 47 and the drive gear 48 are arranged inside the rectangular body 42; the conical head 43 is arranged on the movable column 44; the movable column 44 is connected to the upper drive plate 46 and the lower drive plate 47 through the drive gear 48.

[0048] In the above embodiment, the coordinated work of the movable column, the upper driving plate, the lower driving plate and the flexible blade in the sampling portion enables accurate acquisition and isolation of samples, avoiding the limitation of traditional sampling forceps that can only take samples once.

[0049] like Figure 7As shown, the longitudinal cross-section of the end cap 41 is arched, and its bottom surface is square; a sampling through hole 411 is provided in the middle of the end cap 41; an upper arched groove 412 and a lower arched groove 413 are provided inside the end cap 41, and the curvature of the upper arched groove 412 and the lower arched groove 413 are the same as the curvature of the top surface of the end cap 41; the cross-sections of the upper arched groove 412 and the lower arched groove 413 are both rectangular, the upper arched groove 412 extends from the upper side of the bottom surface of the end cap 41 to the middle of the top surface of the end cap 41, and the lower arched groove 413 extends from the lower side of the bottom surface of the end cap 41 to the middle of the top surface of the end cap 41; the upper arched groove 4 12 is connected to the lower arched groove 413 on the top surface of the end cap 41; the upper flexible blade 45 is slidably disposed inside the upper arched groove 412, and the lower flexible blade 45 is slidably disposed inside the lower arched groove 413. The flexible blades can slide along the arched groove and enter the sampling through hole to seal the sample when needed, thereby ensuring sample isolation and preventing contamination during sample removal. The flexible blades 45 are connected to the left sides of the upper drive plate 46 and the lower drive plate 47; the movable column 44 can drive the conical head 43, the upper drive plate 46, and the lower drive plate 47 to move. During the sampling process, the flexible blades can isolate the sample from the external environment, reduce contact with contaminants such as body fluids, and thus ensure the cleanliness of the sample.

[0050] The movable column 44 drives the conical head 43 to extend out of the end cap 41 along the sampling hole 411. At this time, the upper driving plate 46 and the lower driving plate 47 are close to the right side of the rectangular body 42, and the upper and lower flexible blades 45 are retracted into the interior of the rectangular body 42, and the sampling hole 411 is opened.

[0051] The movable column 44 drives the conical head 43 to retract into the end cap 41 along the sampling through hole 411. At this time, the upper driving plate 46 and the lower driving plate 47 are close to the left side of the rectangular main body 42, and the flexible blades 45 on the upper and lower sides enter the sampling through hole 411 along the arched groove, and the sampling through hole 411 is in a closed state.

[0052] Optionally, in some embodiments, Figure 8As shown, a driving through hole 421 is provided in the middle of the rectangular main body 42, and an upper rectangular guide hole 422 and a lower rectangular guide hole 423 of the same size are symmetrically provided on the upper and lower sides of the driving through hole 421; a gear hole 424 is provided between the upper rectangular guide hole 422 and the driving through hole 421, and between the lower rectangular guide hole 423 and the driving through hole 421, and the gear holes 424 on the upper and lower sides are symmetrically arranged, and the gear holes 424 are through holes; a gear groove 424 is provided inside the gear hole 424, and the terminals on both sides of the driving gear 48 are arranged in the gear groove 424; the driving gear 48 does not contact the gear hole 424; and limiting sliding grooves 426 of the same size are symmetrically provided on the left and right sides of the driving through hole 421.

[0053] Optionally, in some embodiments, Figure 9 As shown, the moving column 44 is a cylinder, and the moving column 44 is clearance-matched with the driving through hole 421. The moving column 44 can be slidably arranged on the inner side of the driving through hole 421; the upper and lower sides of the moving column 44 are provided with a first straight tooth 441; the left and right sides of the moving column 44 are provided with a limiting slider 442, and the limiting slider 442 is clearance-matched with the limiting slide groove 426; the bottom of the moving column 44 is provided with a driving hole 443; the top of the moving column 44 is provided with the conical head 43, and a connecting thin rod 431 is provided between the conical head 43 and the moving column 44.

[0054] Optionally, in some embodiments, the driving through hole 421 is the same size as the sampling through hole 411 and is concentrically arranged; the upper rectangular guide hole 422 corresponds to the position of the upper arch groove 412, and the lower rectangular guide hole 423 corresponds to the position of the lower arch groove 413.

[0055] Optionally, in some embodiments, the upper drive plate 46 and the lower drive plate 47 are rectangular plates of the same size, and a second spur tooth is provided on the inward side of each of the upper drive plate 46 and the lower drive plate 47; the upper drive plate 46 is slidably disposed inside the upper rectangular guide hole 422, and the lower drive plate 47 is slidably disposed inside the lower rectangular guide hole 423; the upper drive gear 48 is respectively meshed with the upper second spur tooth and the upper first spur tooth 441; and the lower drive gear 48 is respectively meshed with the lower second spur tooth and the lower first spur tooth 441. The meshing connection between the first spur tooth on the moving column and the drive gear, as well as the meshing connection between the second spur tooth on the upper and lower drive plates and the drive gear, achieves synchronous movement of the moving column and the upper and lower drive plates, which is the key to achieving multiple sampling and sample isolation.

[0056] Optionally, in some embodiments, a barb is provided at the tail of the conical head 43 .

[0057] Optionally, in some embodiments, Figure 10 As shown, a one-way blocking ring 49 is provided inside the sampling through hole 411. The inward-facing side of the one-way blocking ring 49 is a smooth surface, and the outward-blocking side is a frosted surface. The frosted surface of the one-way blocking ring can prevent the sample from protruding outward. The design of the one-way blocking ring can prevent the sample from being contaminated and lost during the removal process, thereby improving the integrity and accuracy of the sample.

[0058] Optionally, in some embodiments, Figure 5 As shown, the imaging unit 3 includes a cylindrical probe 31, a guide 32 and a slot 33; a collimator and a sampling optical fiber are fixedly installed inside the cylindrical probe 31; the guide 32 is a rectangular parallelepiped, which is located at the lower right side of the cylindrical probe 31; the slot 33 is provided on the guide 32;

[0059] A guide slot 427 matching the guide member 32 is provided on the upper right side of the rectangular main body 42; a card block is provided on the upper side of the upper driving plate 46; the card block passes through the guide slot 427 and is matched with the card slot 33; the upper driving plate 46 can drive the imaging part 3 to move inward or outward.

[0060] Optionally, in some embodiments, the driving rod 51 is connected to the driving hole 443 in the movable column 44; the driving unit 5 drives the movable column 44 to perform telescopic movement via the driving rod 51; illustratively, the driving unit 5 is a hydraulic driving unit.

[0061] Optionally, in some embodiments, the lighting portion 6 includes a cylindrical LED lamp holder and a wire.

[0062] Optionally, in some embodiments, the injection part 7 and the suction part 8 are both hollow straws; the injection part 7 is connected to an external injection pump for injecting therapeutic fluid into the patient's body; the suction part 8 is connected to an external suction pump for extracting the patient's body fluids.

[0063] Optionally, in some embodiments, the end cap 41 and the rectangular body 42 are composed of two parts, left and right or upper and lower parts, and are fixed by bonding, screws, etc.

[0064] Optionally, in some embodiments, the imaging unit 3, the driving unit 5, the lighting unit 6, the injection unit 7, and the suction unit 8 are all connected to an external control device to complete tasks such as collecting images inside the patient's body, sampling and driving, lighting control, suctioning, and injection.

[0065] Working principle of endoscopic device with imaging and sampling functions:

[0066] 1. Sampling Process: When sampling, the driving rod 51 drives the movable column 44 forward. At this time, the upper driving plate 46 and the lower driving plate 47 move backward, driving the flexible blade 45 to retract into the arched grooves 412 and 413. The conical head 43 extends out of the end cap 41 and penetrates the sample 1. After sampling is completed, the driving rod 51 drives the movable column 44 backward. At this time, the upper driving plate 46 and the lower driving plate 47 move forward, driving the flexible blade 45 to enter the arched grooves 412 and 413. The conical head 43 retracts the sample 1 into the end cap 41, and the upper and lower flexible blades 45 contact and close, cutting off the sample 1. When sampling again, the one-way blocking ring 49 prevents the sample 1 from protruding outward. The sample 2 pushes the sample 1 deeper into the connecting rod 431. This structure allows for multiple sampling at different locations, providing convenience for doctors to examine different locations.

[0067] 2. Expanding the Field of View: During sampling, the upper drive plate 46 drives the cylindrical probe 31 backward, expanding the field of view and increasing the user's ability to monitor the sampling area, making sampling more convenient. After sampling is complete, the upper drive plate 46 drives the cylindrical probe 31 forward and resets.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An endoscopic device with imaging and sampling functions, comprising: The front end accommodating part, the adapter, the imaging part, the sampling part, the driving part, the lighting part, the liquid injection part, the suction part and the protective sleeve; the front end accommodating part is a cylinder, a square through hole is provided in the middle thereof, and a cylindrical first through hole, a second through hole, a third through hole and a fourth through hole are provided on the upper, lower, left and right sides of the square through hole respectively; the imaging part is provided on the inner side of the first through hole, the lighting part is provided on the inner side of the second through hole, the liquid injection part is provided on the inner side of the third through hole, the suction part is provided on the inner side of the fourth through hole, and the sampling part is provided on the inner side of the square through hole; the adapter is a hollow cylinder, and its inner diameter is larger than the outer diameter of the front end accommodating part; a hollow ring and a support arm are provided inside the adapter, and the hollow ring is fixedly connected to the inner wall of the adapter through the support arms provided on both sides; the front end of the adapter is fixedly sleeved with the front end accommodating part, and the rear end of the adapter is fixedly sleeved with the protective sleeve; the driving part is fixedly provided inside the hollow ring, and the driving rod of the driving part is connected with the sampling part; The sampling part includes an end cap, a rectangular body, a conical head, a movable column, a flexible blade, an upper driving plate, a lower driving plate and a driving gear; the end cap is connected to the rectangular body; the conical head, the movable column, the upper driving plate, the lower driving plate and the driving gear are arranged inside the rectangular body; the conical head is arranged on the movable column; the movable column is connected to the upper driving plate and the lower driving plate through the driving gear; the longitudinal cross-section of the end cap is arched, and its bottom surface is square; a sampling through hole is provided in the middle of the end cap; an upper arched groove and a lower arched groove are provided inside the end cap, and the curvature of the upper arched groove and the lower arched groove is the same as the curvature of the top surface of the end cap; the cross-sections of the upper arched groove and the lower arched groove are both rectangular, the upper arched groove extends from the upper side of the bottom surface of the end cap to the middle of the top surface of the end cap, and the lower arched groove extends from the lower side of the bottom surface of the end cap to the end The middle part of the top surface of the cap; the upper arch groove and the lower arch groove are connected at the top surface of the end cap; the flexible blade on the upper side can be slidably set on the inner side of the upper arch groove, and the flexible blade on the lower side can be slidably set on the inner side of the lower arch groove; the left sides of the upper driving plate and the lower driving plate are connected with flexible blades; the moving column can drive the conical head, the upper driving plate and the lower driving plate to move; the moving column drives the conical head to extend out of the end cap along the sampling through hole. At this time, the upper driving plate and the lower driving plate are close to the right side of the rectangular main body, and the flexible blades on the upper and lower sides are retracted into the interior of the rectangular through hole, and the sampling through hole is in an open state; the moving column drives the conical head to retract the end cap along the sampling through hole. At this time, the upper driving plate and the lower driving plate are close to the left side of the rectangular main body, and the flexible blades on the upper and lower sides enter the sampling through hole along the arch groove, and the sampling through hole is in a closed state.

2. The endoscopic device according to claim 1, wherein in, A driving through hole is provided in the middle of the rectangular main body, and an upper rectangular guide hole and a lower rectangular guide hole of the same size are symmetrically provided on the upper and lower sides of the driving through hole; gear holes are provided between the upper rectangular guide hole and the driving through hole, and between the lower rectangular guide hole and the driving through hole, and the gear holes on the upper and lower sides are symmetrically provided, and the gear holes are through holes; a gear groove is provided inside the gear hole, and the terminals on both sides of the driving gear are provided in the gear groove; the driving gear does not contact the gear hole; limiting slide grooves of the same size are symmetrically provided on the left and right sides of the driving through hole.

3. The endoscopic device according to claim 2, wherein: in, The moving column is a cylinder, and the moving column and the driving through hole are clearance-matched. The moving column can be slidably arranged on the inner side of the driving through hole; the first straight teeth are provided on the upper and lower sides of the moving column; the limit sliders are provided on the left and right sides of the moving column, and the limit sliders and the limit slide grooves are clearance-matched; the bottom of the moving column is provided with a driving hole; the top of the moving column is provided with a conical head, and a connecting thin rod is provided between the conical head and the moving column.

4. The endoscopic device according to claim 3, wherein: in, The driving through hole and the sampling through hole have the same size and are concentrically arranged; the upper rectangular guide hole corresponds to the position of the upper arched groove, and the lower rectangular guide hole corresponds to the position of the lower arched groove.

5. The endoscopic device according to claim 4, wherein: in, The upper drive plate and the lower drive plate are rectangular plates of the same size, and the upper drive plate and the lower drive plate are both provided with second straight teeth on their inner sides; the upper drive plate is slidably arranged on the inner side of the upper rectangular guide hole, and the lower drive plate is slidably arranged on the inner side of the lower rectangular guide hole; The upper driving gear is respectively engaged with the upper second spur teeth and the upper first spur teeth; the lower driving gear is respectively engaged with the lower second spur teeth and the lower first spur teeth.

6. The endoscopic device according to claim 5, wherein: in, The imaging unit includes a cylindrical probe, a guide, and a slot; a collimator and a sampling optical fiber are fixedly installed inside the cylindrical probe; the guide is a rectangular parallelepiped, which is located on the lower right side of the cylindrical probe; and a slot is provided on the guide. A guide slot matching the guide piece is provided on the upper right side of the rectangular main body; a card block is provided on the upper side of the upper driving plate; the card block passes through the guide slot and is matched with the card slot; the upper driving plate can drive the imaging part to move inward or outward.

7. The endoscopic device according to claim 6, wherein: in, The driving rod is connected to the driving hole in the moving column; the driving part drives the moving column to move telescopically via the driving rod.

Images