Endoscopic biopsy device for respiratory distress

Abstract

This invention discloses an endoscopic in vivo sampling device for critically ill respiratory patients, comprising an outer tube with a locking mechanism on one side of its outer wall, a guide tube fixedly connected to the bottom of the outer tube, a telescopic tube inside the outer tube, an operating ring fixedly connected to the outer wall of the telescopic tube, a sampling tube at the bottom of the telescopic tube, a tipping bucket at the bottom of the sampling tube, and a negative pressure tube shared by the telescopic tube and the sampling tube. This invention utilizes the cooperation between the outer tube, the sampling tube, and the negative pressure tube. Because the sample is mechanically supported by the closed tipping bucket, rather than relying solely on continuous negative pressure adsorption, there is no need to maintain a high level of negative pressure during the withdrawal of the sampling tube, effectively reducing continuous suction damage to the patient's body cavity tissues. Furthermore, the precise pressure adjustment of the pressure relief valve effectively prevents accidental damage caused by excessive negative pressure, resulting in higher operational safety.

Description

Technical Field

[0001] This invention relates to the field of respiratory system in vivo sampling equipment technology, specifically to an endoscopic in vivo sampling device for respiratory critical care. Background Technology

[0002] In the clinical diagnosis of respiratory critical care, obtaining biopsy samples from the deep airways or lungs via endoscopy is a crucial step. Currently, one of the commonly used biopsy methods is negative pressure aspiration biopsy, which uses negative pressure to draw the target tissue into the tip cavity of the sampling instrument and cut it to complete the sampling.

[0003] However, in actual operation, existing negative pressure in vivo sampling devices often require maintaining a high level of negative pressure suction to ensure that the sampled sample does not fall off due to gravity or friction during the process of withdrawing the sampling device from the body cavity.

[0004] This operating mode has two problems. On the one hand, the continuous excessive negative pressure may cause additional mechanical damage to the patient's fragile respiratory mucosa or lung tissue, increasing the risk of bleeding or pneumothorax. On the other hand, if the negative pressure is reduced to avoid damage, the sample is very likely to fall off midway during the instrument withdrawal, resulting in sampling failure and requiring repeated operation. This not only prolongs the operation time and increases the patient's pain, but may also cause complications due to repeated sampling.

[0005] Therefore, we propose to design an endoscopic in vivo sampling device for critically ill respiratory patients. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: An endoscopic in vivo sampling device for respiratory critical care includes an outer tube, a locking mechanism on one side of the outer wall of the outer tube, a guide tube fixedly connected to the bottom of the outer tube, a telescopic tube inside the outer tube, an operating ring fixedly connected to the outer wall of the telescopic tube, a sampling tube at the bottom of the telescopic tube, a tipping bucket at the bottom end of the sampling tube, and a negative pressure tube shared by the telescopic tube and the sampling tube.

[0008] Preferably, the locking mechanism includes a locking bolt threaded to the outer sleeve, the end of which passes through the outer sleeve and is rotatably connected to a damping plate, the damping plate being tightly fitted against the outer wall of the telescopic tube. By turning the locking bolt, the damping plate can be moved closer to the telescopic tube and pressed tightly, facilitating the locking of the telescopic tube's position.

[0009] Preferably, the outer wall of the bottom end of the telescopic tube is provided with threads, and the telescopic tube is threadedly connected to the inner wall of the outer sleeve near the bottom. When the telescopic tube is turned, the telescopic tube and the sampling tube can slide in the outer sleeve, which facilitates the sampling tube to be inserted into the patient's body cavity along the guide tube for sampling.

[0010] Preferably, a bearing seat is fixedly connected to the top of the sampling tube, and the bearing seat is rotatably connected to the telescopic tube. Since the bearing seat is provided between the telescopic tube and the sampling tube, when the telescopic tube rotates, the sampling tube will only slide and will not rotate under the limitation of the limiting strip.

[0011] Preferably, a limiting strip is fixedly connected to the outer periphery of the top end of the sampling tube, and a limiting groove corresponding to the limiting strip is formed on the inner side wall of the bottom end of the outer sleeve. The limiting strip and the limiting groove are slidably connected. Under the limitation of the limiting strip, the sampling tube can slide in the guide tube without rotating, thereby facilitating the stability of the sampling process.

[0012] Preferably, there are two tipping buckets, which are respectively hinged to both sides of the outer wall of the sampling tube. When the sampling tube slides down, the negative pressure tube can extend from the tipping bucket to open it, making it easier to sample from the body cavity.

[0013] Preferably, the tipping bucket has a cavity inside, and a negative pressure suction nozzle is fixedly connected to the bottom end of the negative pressure tube, with the negative pressure suction nozzle located inside the cavity. After the sample is extracted through the negative pressure suction nozzle, the sampling tube is pulled back. When the tipping bucket reaches the end of the guide tube, the two tipping buckets close to support the sample sucked out by the negative pressure suction nozzle, thereby preventing the sample from falling during the retraction of the sampling tube.

[0014] Preferably, a positioning ring is fixedly connected to the inner wall periphery near the bottom of the sampling tube. The positioning ring is smoothly fitted to the outer wall of the negative pressure tube, which facilitates the limiting of the negative pressure tube and ensures that the end of the negative pressure tube can be located in the center of the sampling tube.

[0015] Preferably, the top of the negative pressure tube extends through the side wall of the telescopic tube, and a negative pressure connector and a pressure relief valve are fixedly connected to both sides of the negative pressure tube. One end of the negative pressure connector is connected to a medical negative pressure pump to provide negative pressure to the negative pressure tube, while the pressure relief valve can help control the pressure inside the tube to prevent excessive negative pressure from causing damage to the human body cavity.

[0016] Preferably, both the top of the telescopic tube and the top of the negative pressure tube are fixedly connected with pull rings, which facilitates the operation of workers to pull the telescopic tube and the negative pressure tube.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes the cooperation between the outer tube, sampling tube, and negative pressure tube. Since the sample is mechanically supported by a closed tipping bucket rather than relying solely on continuous negative pressure adsorption, there is no need to maintain a high level of negative pressure during the withdrawal of the sampling tube. This effectively reduces continuous suction damage to the patient's body cavity tissues. Furthermore, the precise pressure regulation of the pressure relief valve can effectively prevent accidental damage caused by excessive negative pressure, resulting in higher operational safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a perspective view of an endoscopic in vivo sampling device for respiratory critical care according to the present invention; Figure 2 This is a schematic diagram of the structure of an endoscopic in vivo sampling device for respiratory critical care according to the present invention; Figure 3 This is a schematic diagram of the sampling tube of an endoscopic live biopsy device for respiratory critical care according to the present invention; Figure 4 for Figure 2 Schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the negative pressure tube of an endoscopic live sampling device for respiratory critical care according to the present invention.

[0019] Legend: 1. Outer tube; 2. Locking mechanism; 201. Locking bolt; 202. Damping plate; 3. Guide tube; 4. Telescopic tube; 5. Sampling tube; 501. Shaft seat; 502. Limiting strip; 503. Positioning ring; 6. Tipping bucket; 7. Cavity; 8. Negative pressure tube; 801. Negative pressure connector; 802. Pressure relief valve; 9. Negative pressure suction nozzle; 10. Pull ring; 11. Operating ring. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0022] Please see Figure 1-5 The present invention provides an endoscopic live sampling device for respiratory critical care, including an outer tube 1, and a locking mechanism 2 is provided on one side of the outer wall of the outer tube 1.

[0023] The locking mechanism 2 includes a locking bolt 201 threadedly connected to the outer sleeve 1. The end of the locking bolt 201 passes through the outer sleeve 1 and is rotatably connected to a damping plate 202. The damping plate 202 is tightly fitted against the outer wall of the telescopic tube 4. By turning the locking bolt 201, the damping plate 202 can be moved closer to the telescopic tube 4 and pressed tightly, which facilitates locking the position of the telescopic tube 4.

[0024] The bottom of the outer tube 1 is fixedly connected to a guide tube 3, and a telescopic tube 4 is provided inside the outer tube 1. An operating ring 11 is fixedly connected to the outer wall of the telescopic tube 4, and a sampling tube 5 is provided at the bottom of the telescopic tube 4.

[0025] The outer wall of the bottom end of the telescopic tube 4 is threaded. The telescopic tube 4 is threaded to the inner wall of the outer sleeve 1 near the bottom. When the telescopic tube 4 is turned, the telescopic tube 4 and the sampling tube 5 can slide in the outer sleeve 1, which makes it easier for the sampling tube 5 to be inserted into the patient's body cavity along the guide tube 3 for sampling.

[0026] In this embodiment, a bearing seat 501 is fixedly connected to the top of the sampling tube 5. The bearing seat 501 is rotatably connected to the telescopic tube 4. Since the bearing seat 501 is provided between the telescopic tube 4 and the sampling tube 5, when the telescopic tube 4 rotates, the sampling tube 5 will only slide and will not rotate under the limitation of the limiting strip 502.

[0027] A limiting strip 502 is fixedly connected to the outer periphery of the top end of the sampling tube 5. A limiting groove corresponding to the limiting strip 502 is opened on the inner side wall of the bottom end of the outer sleeve 1. The limiting strip 502 and the limiting groove are slidably connected. Under the limitation of the limiting strip 502, the sampling tube 5 can slide in the guide tube 3 without rotating, thereby facilitating the stability of the sampling process.

[0028] The bottom of the sampling tube 5 is equipped with a tipping bucket 6. There are two tipping buckets 6. The two tipping buckets 6 are respectively connected to the two sides of the outer wall of the sampling tube 5 by hinges. When the sampling tube 5 slides down, the negative pressure tube 8 can extend out from the tipping bucket 6 and push the tipping bucket 6 open to facilitate sampling inside the body cavity.

[0029] The telescopic tube 4 and the sampling tube 5 are both equipped with a negative pressure tube 8. A positioning ring 503 is fixedly connected to the inner wall of the sampling tube 5 near the bottom. The positioning ring 503 is smoothly attached to the outer wall of the negative pressure tube 8, which facilitates the limiting of the negative pressure tube 8 and ensures that the end of the negative pressure tube 8 can be located in the center of the sampling tube 5.

[0030] In this embodiment, pull rings 10 are fixedly connected to the top of the telescopic tube 4 and the top of the negative pressure tube 8, which facilitates the operation of workers to pull the telescopic tube 4 and the negative pressure tube 8.

[0031] In this embodiment, a cavity 7 is provided inside the tipping bucket 6, and a negative pressure suction nozzle 9 is fixedly connected to the bottom end of the negative pressure tube 8. The negative pressure suction nozzle 9 is located inside the cavity 7. After the sample is extracted through the negative pressure suction nozzle 9, the sampling tube 5 is pulled back. When the tipping bucket 6 reaches the end of the guide tube 3, the two tipping buckets 6 close to support the sample sucked out by the negative pressure suction nozzle 9, thereby preventing the sample from falling during the retraction of the sampling tube 5.

[0032] The top of the negative pressure tube 8 extends through the side wall of the telescopic tube 4. Negative pressure connectors 801 and pressure relief valves 802 are fixedly connected to both sides of the negative pressure tube 8. One end of the negative pressure connector 801 is connected to a medical negative pressure pump to provide negative pressure to the negative pressure tube 8, while the pressure relief valve 802 can help control the pressure inside the tube to prevent excessive negative pressure from causing damage to the human body cavity.

[0033] Working principle: First, assemble the device, ensuring that the telescopic tube 4 is screwed into the inner wall of the outer sleeve 1 via its bottom thread, and that the limiting strip 502 at the bottom of the sampling tube 5 is embedded in the limiting groove on the inner wall of the guide tube 3. Connect the negative pressure connector 801 at the top of the negative pressure tube 8 to the medical negative pressure pump and check the status of the pressure relief valve 802.

[0034] During operation, medical staff hold the outer tube 1 and rotate the operating ring 11 to drive the telescopic tube 4 to rotate. Since the telescopic tube 4 and the outer tube 1 are connected by threads, and the sampling tube 5 is restricted from rotation by the engagement of the limiting strip 502 and the limiting groove, rotating the operating ring 11 drives the telescopic tube 4 and the rotatingly connected sampling tube 5 to move smoothly downwards in a straight line, allowing the sampling tube 5 to gradually extend along the guide tube 3 into the target position within the patient's body cavity. During this advancement, the locking bolt 201 of the locking mechanism 2 can be tightened, and the damping plate 202 at its end can press against the outer wall of the telescopic tube 4, locking its position at any time and ensuring operational stability.

[0035] When the tipping bucket 6 at the bottom of the sampling tube 5 reaches the sampling area, the pointed structure formed by the two tipping buckets 6 can easily reach the sampling position and start the sampling operation.

[0036] An external negative pressure pump connected to the negative pressure connector 801 generates negative pressure, simultaneously pushing the pull ring 10 at the top of the negative pressure tube 8 towards the patient's body cavity. The negative pressure tube 8 then moves downwards, and the negative pressure suction nozzle 9 at its bottom extends from the sampling tube 5, pushing open the two hinged tippers 6. The continuously supplied negative pressure is used to aspirate the live sample from the target location through the negative pressure suction nozzle 9. The negative pressure tube 8 is then pulled back, positioning the live sample within the cavity 7.

[0037] After sample collection is completed, sample retrieval is performed. First, gently pull back the pull ring 10 of the negative pressure tube 8 to slightly retract the negative pressure nozzle 9. Then, rotate the operating ring 11 in the opposite direction to move the telescopic tube 4 and the sampling tube 5 upward as a whole. When the sampling tube 5 is retracted into the guide tube 3, the two unfolded tipping buckets 6 abut against the port of the guide tube 3, causing the hinge to rotate until the two tipping buckets 6 are completely closed.

[0038] The closed tipping bucket 6 forms a sealed cavity that safely holds the sample drawn up by the negative pressure suction nozzle 9, effectively preventing sample loss or contamination of tissues along the way during exit from the body cavity. The pressure relief valve 802 adjusts and releases excessive negative pressure throughout the process, protecting the patient's cavity from damage.

[0039] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An endoscopic in vivo sampling device for respiratory critical care, comprising an outer tube (1), characterized in that, A locking mechanism (2) is provided on one side of the outer wall of the outer tube (1). A guide tube (3) is fixedly connected to the bottom of the outer tube (1). A telescopic tube (4) is provided inside the outer tube (1). An operating ring (11) is fixedly connected to the outer wall of the telescopic tube (4). A sampling tube (5) is provided at the bottom of the telescopic tube (4). A tipping bucket (6) is provided at the bottom end of the sampling tube (5). A negative pressure tube (8) is provided inside both the telescopic tube (4) and the sampling tube (5).

2. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, The locking mechanism (2) includes a locking bolt (201) threadedly connected to the outer tube (1). The end of the locking bolt (201) passes through the outer tube (1) and is rotatably connected to a damping plate (202). The damping plate (202) is tightly fitted to the outer wall of the telescopic tube (4).

3. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, The telescopic tube (4) has a thread on the outer wall at the bottom end, and the telescopic tube (4) is threaded to the inner wall of the outer sleeve (1) near the bottom.

4. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, The top of the sampling tube (5) is fixedly connected to a bearing seat (501), and the bearing seat (501) is rotatably connected to the telescopic tube (4).

5. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, The sampling tube (5) has a limiting strip (502) fixedly connected to the outer wall of the top end, and the inner wall of the bottom end of the outer tube (1) has a limiting groove corresponding to the limiting strip (502). The limiting strip (502) and the limiting groove are slidably connected.

6. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, Two tipping buckets (6) are provided, and the two tipping buckets (6) are respectively connected to the two sides of the outer wall of the sampling tube (5) by hinges.

7. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, The tipping bucket (6) has a cavity (7) inside, and a negative pressure suction nozzle (9) is fixedly connected to the bottom end of the negative pressure pipe (8). The negative pressure suction nozzle (9) is located inside the cavity (7).

8. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, A positioning ring (503) is fixedly connected to the inner wall circumference near the bottom of the sampling tube (5), and the positioning ring (503) is smoothly attached to the outer wall of the negative pressure tube (8).

9. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, The top of the negative pressure pipe (8) extends through the side wall of the telescopic pipe (4), and a negative pressure connector (801) and a pressure relief valve (802) are fixedly connected to both sides of the negative pressure pipe (8).

10. The endoscopic in vivo sampling device for respiratory critical care according to claim 1, characterized in that, Pull rings (10) are fixedly connected to the top of the telescopic tube (4) and the top of the negative pressure tube (8).

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