A telescoping multi-branch protection sheath for bronchial biopsy

Abstract

A retractable multi-branched protective sheath for bronchial biopsy is disclosed. The upper edge of the lower retractable subshell is inside the lower end of the outer shell. The internal cavity of the outer shell accommodates the subsequent lower retractable subshell. The upper edge of the primary bronchial articulation point is inside the lower end of the lower retractable subshell. Openings are located on both sides of the primary bronchial articulation point, and left and right retractable subshells are installed thereon. The left joint of the secondary bronchus is installed at the outer end of the left retractable subshell, and the right joint of the secondary bronchus is installed at the outer end of the right retractable subshell. The left joint of the secondary bronchus has two symmetrically arranged, lowest-level shell retractable grooves (one and two), and the right joint has two symmetrically arranged, lowest-level shell retractable grooves (three and four). The different retracted and extended configurations allow for continuous, collision-free movement. This invention enables rapid deployment and retraction of a protective sheath for human cavities during bronchial surgery.

Description

Technical Field

[0001] This invention belongs to the field of bronchial biopsy supporting technology, specifically a retractable multi-branched protective sheath for bronchial biopsy. Background Technology

[0002] Telescopic structures, with their compact size and ease of deployment, are of significant value in a variety of applications. Bronchoscopy is a medical procedure used to examine and treat respiratory diseases. A doctor inserts a bronchoscope into the airway through the patient's mouth or nose. Once the bronchoscope is in place, the doctor can observe the condition of the airway through the lens. This can include examining the branches of the bronchial tree, looking for foreign objects, tumors, infections, or other abnormalities. If a problem is found, the doctor may take treatment measures such as sampling (biopsy), scraping, excision of small masses, or other interventional treatments. After the examination and treatment are complete, the bronchoscope is carefully withdrawn. However, during insertion and withdrawal, the actuators at the tip of the bronchoscope may damage soft body cavities, causing accidental injury to non-lesion areas. This invention proposes a telescopic bronchial protective sheath that can effectively create a protective sheath. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a retractable multi-branched protective sheath for bronchial biopsy, which can be quickly deployed and retracted during bronchial surgery to protect human cavities.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A retractable multi-branch protective sheath for bronchial biopsy includes an outer shell, a lower retractable subshell, a primary bronchus articulation point, a left retractable subshell, a right retractable subshell, a left articulation point of the secondary bronchus, and a right articulation point of the secondary bronchus. The upper edge of the lower retractable subshell is inside the lower end of the outer shell. The internal cavity of the outer shell is shaped to accommodate the subsequent lower retractable subshell. The lower retractable subshell has at least two sections that retract into the internal cavity of the outer shell. The upper edge of the primary bronchus articulation point is inside the lower end of the lower retractable subshell. A protrusion at the lower end of the lower retractable subshell has a lower retractable groove for assisting retraction. The primary bronchus articulation point has openings on both sides and is fitted with the left and right retractable subshells. The left retractable subshell has a left articulation point of the secondary bronchus installed on its outer end, and the right retractable subshell has a right articulation point of the secondary bronchus installed on its outer end. Both the left and right retractable subshells have at least two sections that retract into the internal cavity of the primary bronchus articulation point. The outer side of the sub-shell has a protrusion with a left joint telescopic groove for assisting telescopic movement, and the outer side of the right telescopic sub-shell has a protrusion with a right joint telescopic groove for assisting telescopic movement. The left joint of the secondary bronchus is symmetrically provided with two lowest-level shell telescopic grooves facing outward. Both the first and second lowest-level shell telescopic grooves retract into the internal cavity of the left joint of the secondary bronchus after at least two sections are retracted. The right joint of the secondary bronchus is symmetrically provided with two lowest-level shell telescopic grooves facing outward. Both the third and fourth lowest-level shell telescopic grooves retract into the internal cavity of the right joint of the secondary bronchus after at least two sections are retracted. The outer shell, the lower telescopic sub-shell, the joint of the primary bronchus, the left and right telescopic sub-shells, the left joint of the secondary bronchus, the shell telescopic grooves, the first and second lowest-level shell telescopic grooves, and the right joint of the secondary bronchus have continuous, collision-free movement between different retracted and extended configurations.

[0006] As a further improvement of the present invention, the retractable multi-branched protective sheath for bronchial biopsy is made of an elastic material. As a further improvement of the present invention, the elastic material is polycaprolactone manufactured by 3D printing using fused deposition modeling (FDM) technology.

[0007] As a further improvement of the present invention, the lower telescopic groove, the left joint telescopic groove, the right joint telescopic groove, the lowest level shell telescopic groove one, the lowest level shell telescopic groove two, the lowest level shell telescopic groove three and the lowest level shell telescopic groove four are circular grooves.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] This invention employs a retractable shell structure, which allows for the rapid deployment or retraction of the protective shell during bronchial surgery, effectively preventing doctors from accidentally injuring non-lesion sites during sampling, treatment, and other stages.

[0010] This invention can be quickly customized according to the different bronchi and lesion conditions of different patients;

[0011] The customized 3D model of this invention can be quickly manufactured by a 3D printer, and consumables such as polycaprolactone are used. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the fully extended structure in an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the fully contracted structure in an embodiment of the present invention;

[0014] Figure 3 This is a top view schematic diagram of the structure of the bronchial joint used in the embodiments of the present invention;

[0015] Figure 4 This is a schematic diagram of the use of a telescopic hook and a telescopic groove in an embodiment of the present invention;

[0016] Figure 5 This is the process of a pair of father and child shells extending in an embodiment of the present invention.

[0017] The component names are as follows:

[0018] 1. Outer shell; 2. Lower telescopic subshell; 3. Lower telescopic groove; 4. First-stage bronchus joint; 5. Left telescopic subshell; 6. Right telescopic subshell; 7. Left joint telescopic groove; 8. Right joint telescopic groove; 9. Left joint of the second-stage bronchus; 10. Right joint of the second-stage bronchus; 11. Lowest-stage shell telescopic groove one; 12. Lowest-stage shell telescopic groove two; 13. Lowest-stage shell telescopic groove three; 14. Lowest-stage shell telescopic groove four. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] This invention provides a retractable bronchial protection sheath device. The overall structure is as follows: Figure 1As shown, it consists of a series of retractable components. 1 is the outer shell, each shell represented by a slightly elastic material, its internal cavity shape designed to accommodate subsequent smaller shells. Each shell has continuous, collision-free movement between different retracted and extended configurations. In the retracted state, each shell is tightly contained within its parent shell. 2 is the lower retractable sub-shell of the outer shell 1, and so on downwards. 4 is the primary bronchial joint, with a sub-shell on each side. The sub-shells can freely extend and retract through the openings on both sides of the primary bronchial joint 4 without colliding inside the primary bronchial joint 4. To accommodate the sub-shells on both sides, the length of the primary bronchial joint 4 is slightly longer than its upper shell. The fully retracted structure resembles... Figure 2 As shown. 3 is called the lower telescopic groove; it is a protrusion on the primary bronchus joint 4, and the protrusion has a circular groove to assist in telescopic movement. Specific operation will be explained in the detailed implementation. 9 is the left joint of the secondary bronchus, and 10 is the right joint of the secondary bronchus. Unlike the primary bronchus joint 4, they can completely retract into their parent shell. Similarly, the left joint 9 and the right joint 10 of the secondary bronchus also have corresponding left joint telescopic grooves 7 and right joint telescopic grooves 8. The lowest level shell also has telescopic grooves, such as... Figure 1 The lowest-level shell expansion joints 11, 12, 13, and 14 are shown in the diagram. Lesions often occur around the periphery of these lowest-level shells. The shape of the entire structure can be customized for each patient, creating a unique shell. It can be 3D printed using polycaprolactone (PLC) and fused deposition modeling (FDM) technology, possessing a sufficiently large Young's modulus, allowing for continuous printing of very thin layers without any support. Furthermore, its surface is sufficiently smooth, minimizing friction when the concentric tubes mate. Most importantly, polycaprolactone is a biodegradable polyester widely used in medical fields such as long-term implantable devices and can be sterilized using electron beams.

[0021] Figure 1 This is a schematic diagram of the fully extended structure in an embodiment of the present invention. Figure 2 This is a schematic diagram of the fully contracted structure in an embodiment of the present invention. This state is also the state before use. Figure 3 This is a top view schematic diagram of the structure of the bronchial joint used in an embodiment of the present invention. This structure is one of the key structures in the present invention because it extends the branches of the retractable structure. Figure 4This is a schematic diagram illustrating the use of a telescopic hook and telescopic groove in an embodiment of the invention. In use, the doctor first operates the telescopic clamp to grip the telescopic groove 3 on the joint 4 of the primary bronchus and applies a force along the axis to fully extend it downwards. Then, the doctor operates the clamp to grip the left joint telescopic groove 7 on the left joint 9 of the secondary bronchus and the right joint telescopic groove 8 on the right joint 10 of the secondary bronchus, extending them fully downwards respectively. Finally, the doctor grips the lowest-level shell telescopic groove 11, the second lowest-level shell telescopic groove 12, the third lowest-level shell telescopic groove 13, and the fourth lowest-level shell telescopic groove 14 respectively. At this point, the telescopic bronchial protective sheath is deployed.

[0022] The recovery process is similar to the above operation.

[0023] Figure 5 This is a pair of parent and child shell extension processes in an embodiment of the present invention. Wherein (a) is the extension state, (b) is the state in the process of extension, and (c) is the state of full extension.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any modifications or equivalent changes made based on the technical essence of the present invention shall still fall within the scope of protection claimed by the present invention.

Claims

1. A retractable multi-branch protective sheath for bronchial biopsy, comprising an outer shell (1), a lower retractable sub-shell (2), a primary bronchus joint (4), a left retractable sub-shell (5), a right retractable sub-shell (6), a left joint (9) of the secondary bronchus, and a right joint (10) of the secondary bronchus, characterized in that: The upper edge of the lower telescopic subshell (2) is inside the lower end of the outer shell (1). The internal cavity of the outer shell (1) is shaped to accommodate the subsequent lower telescopic subshell (2). The lower telescopic subshell (2) has at least two sections that retract into the internal cavity of the outer shell (1). The upper edge of the primary bronchial joint (4) is inside the lower end of the lower telescopic subshell (2). The protrusion at the lower end of the lower telescopic subshell (2) has a lower telescopic groove (3) for assisting telescopic movement. The primary bronchial joint (4) has openings on both sides and is fitted with a left telescopic subshell. (5) and the right telescopic sub-shell (6), the left telescopic sub-shell (5) is equipped with the left joint (9) of the secondary bronchus at the outer end, the right telescopic sub-shell (6) is equipped with the right joint (10) of the secondary bronchus at the outer end, the left telescopic sub-shell (5) and the right telescopic sub-shell (6) are both retracted into the internal cavity of the primary bronchus joint point (4) after at least 2 sections are retracted, the protrusion on the outer side of the left telescopic sub-shell (5) has a left joint telescopic groove (7) for assisting telescopic movement, the protrusion on the outer side of the right telescopic sub-shell (6) has a groove (7) for assisting telescopic movement. The right joint telescopic groove (8), the left joint (9) of the secondary bronchus is symmetrically provided with the lowest level shell telescopic groove one (11) and the lowest level shell telescopic groove two (12) facing outwards. The lowest level shell telescopic groove one (11) and the lowest level shell telescopic groove two (12) are both retracted into the internal cavity of the left joint (9) of the secondary bronchus after at least two sections are retracted. The right joint (10) of the secondary bronchus is symmetrically provided with the lowest level shell telescopic groove three (13) and the lowest level shell telescopic groove four (14) facing outwards. The lowest level shell telescopic groove three (13) and the lowest level shell telescopic groove four (14) are symmetrically provided with the lowest level shell telescopic groove three (13) and the lowest level shell telescopic groove four (14) 14) All of them retract into the inner cavity of the right joint (10) of the secondary bronchus after at least 2 sections are retracted. The outer shell (1) and the lower telescopic subshell (2), as well as the first bronchus joint (4) and the left telescopic subshell (5) and the right telescopic subshell (6), as well as the left joint (9) of the secondary bronchus and the shell telescopic groove one (11) and the lowest shell telescopic groove two (12), as well as the right joint (10) of the secondary bronchus and the lowest shell telescopic groove three (13) and the lowest shell telescopic groove four (14) have continuous, collision-free movement between different retraction and deployment configurations.

2. The retractable multi-branched protective sheath for bronchial biopsy according to claim 1, characterized in that: The retractable multi-branched protective sheath used for bronchial biopsy is made of elastic material.

3. A retractable multi-branched protective sheath for bronchial biopsy according to claim 2, characterized in that: The elastic material is polycaprolactone manufactured by 3D printing using fused deposition modeling (FDM) technology.

4. A retractable multi-branched protective sheath for bronchial biopsy according to claim 1, characterized in that: The lower telescopic groove (3), the left joint telescopic groove (7), the right joint telescopic groove (8), the lowest level shell telescopic groove one (11), the lowest level shell telescopic groove two (12), the lowest level shell telescopic groove three (13) and the lowest level shell telescopic groove four (14) are circular grooves.

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