A local drug delivery device for bronchoscopy

Abstract

The application relates to a local administration device for a bronchoscope, which comprises a main pipe, a syringe butt joint and a conical end head, a baffle is arranged in the middle of the inner part of the main pipe, the inner cavity of the main pipe is divided into two passages by the baffle, a syringe butt joint is arranged at the upper end of the main pipe, two injection ports corresponding to the two passages are arranged on the syringe butt joint, the conical end head is arranged at the lower end of the main pipe, a silica gel injection head is arranged at the lower end of the conical end head, a plurality of closable injection holes are arranged on the lower end of the silica gel injection head, a wire pulling structure moving up and down is arranged at the middle part of the baffle, and a push block structure connected with the lower end of the wire pulling structure is arranged in the lower end of the silica gel injection head. The application has the characteristics of accurate control of the injection amount of medicine, simple structure, convenient manufacturing, improved treatment effect and the like.

Description

Technical Field

[0001] This invention relates to the field of bronchoscopic drug delivery technology, and in particular to a local drug delivery device for bronchoscopy. Background Technology

[0002] Bronchoscopy is an important endoscopic tool, suitable for observing lesions in the bronchial segments and subsegments of the lungs, biopsy sampling, and bacteriological and cytological examinations. When a patient's lungs are severely affected, doctors will use a drug delivery device to directly guide medication to the site of infection, which can greatly improve the treatment effect. The drug delivery device is usually inserted into the patient's lungs through the side channel of the bronchoscope, and the bronchoscope is used to facilitate the direct injection of medication into the lung lesion. This conventional operation has a drawback: because the drug delivery device itself is a thin tube structure, it cannot expel air, and the amount of medication cannot be precisely controlled during injection, which greatly affects the treatment effect. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a local drug delivery device for bronchoscopy, which has the characteristics of precise control of drug injection volume, simple structure, convenient manufacturing and improved treatment effect.

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: a local drug delivery device for bronchoscopy is provided, including a main tube, a syringe connector and a conical end. A baffle is provided in the middle of the inside of the main tube, which divides the inner cavity of the main tube into two channels. A syringe connector is provided at the upper end of the main tube. The syringe connector is provided with two injection ports corresponding one-to-one with the two channels. A conical end is installed at the lower end of the main tube. A silicone spray head is provided at the lower end of the conical end. A plurality of closable spray holes are provided on the lower end of the silicone spray head. A vertically movable wire-pulling structure is installed in the middle of the baffle. A push block structure connected to the lower end of the wire-pulling structure is installed inside the lower end of the silicone spray head.

[0005] When the drawing structure moves upward, it pulls the push block structure, which in turn pushes the rubber head body. The rubber head body is squeezed and deformed, and the spray hole is squeezed and closed.

[0006] In this technical solution, a main tube is used as the body for inserting the bronchoscope, and two channels are provided for convenient drug injection. During drug injection, one channel serves as the injection channel and the other as the exhaust channel. A syringe connector is provided to facilitate the setting of injection ports that connect with the two channels. A tapered end is provided as a structure for drug reflux, facilitating the filling of both channels with drug. A silicone nozzle and a closable nozzle are provided to facilitate sealing of the silicone nozzle and achieve drug reflux filling. A wire-pulling structure and a pusher structure are provided to compress the silicone nozzle body and close the closable nozzle.

[0007] When filling the medication, first connect a syringe to an injection port, then pull the wire-pulling mechanism. The wire-pulling mechanism moves upward, pulling the push block mechanism. The push block mechanism squeezes the rubber head body, deforming the rubber head body to close the closable injection hole. Then push the syringe to inject the medication into one of the channels. Air in the main tube is expelled from the other channel until the liquid levels in both channels are level. Ensure that there are 5 ml of medication in the main tube by following the indicator on the main tube. At this point, the medication below the indicator on the main tube is full, and no air is injected during medication injection.

[0008] When filling the bronchoscope with medication, the main tube under the bronchoscope needs to be aligned with the patient's position, and the conical tip and silicone nozzle can be inserted into the patient's position. Then, the pull-string structure is opened, and the silicone nozzle body returns to its original position under elasticity, allowing the closable nozzle to open. Then, five milliliters of air are drawn into the double-ended syringe, and then the syringe connector and the two injection ports of the syringe connector are connected. Then, the double-ended syringe is pushed, and the air in the double-ended syringe enters the main tube, and the medication in the main tube is sprayed out from the closable nozzle.

[0009] Doctors use a bronchoscope to observe the severity of lung disease and determine the dosage of medication based on the severity. The dosage is divided into one milliliter, two milliliters, and three milliliters. After injecting into one infected site, the injection site can be moved to inject into a second infected site. The markings on the double-ended syringe are used to precisely control the amount of medication injected, which greatly improves the treatment effect on the lungs. When all five milliliters of medication have been injected, the above medication filling steps can be repeated to complete the second medication filling.

[0010] As a supplement to this technical solution, the upper end of the wire drawing structure is provided with a handle structure, and the upper front side of the baffle is provided with a wire drawing groove that bends to one side. The bent part of the wire drawing groove is used to facilitate the formation of a constraint with the handle structure of the wire drawing structure.

[0011] In this technical solution, a handle structure is provided to facilitate the pulling of the wire drawing structure, a wire drawing groove is provided to facilitate the movement of the wire drawing structure, and a bent end is provided to facilitate the insertion of the handle structure into the bent end, thereby facilitating the fixation of the wire drawing structure.

[0012] As a supplement to this technical solution, a transparent observation window is provided on the upper front side of the main tube, and a medicine liquid indicator strip is provided on the observation window. The transparent observation window is used to facilitate observation of the medicine liquid, and the medicine liquid indicator strip is used to facilitate indication of the filling amount of medicine liquid in the main tube.

[0013] As a supplement to this technical solution, the upper end of the syringe docking head is provided with a double-hole syringe limiting port, which is used to facilitate the limiting docking of the double-headed syringes.

[0014] As a supplement to this technical solution, the tapered end includes a hard cone, which is a cone shape that is larger at the top and smaller at the bottom. The hard cone is connected to the lower end of the main pipe, and a return cavity communicating with the two channels is provided inside the hard cone.

[0015] In this technical solution, a rigid cone is used to improve the structural strength of the area, making it easier to insert into the patient's position. A reflux cavity is also provided to facilitate the return of the medication, ensuring that both channels contain medication.

[0016] As a supplement to this technical solution, a silicone layer is provided on the outer conical surface of the hard conical head. In this technical solution, the silicone layer is provided to reduce discomfort during insertion.

[0017] As a supplement to this technical solution, the silicone spray head includes a nozzle body, the upper end of which is provided with a spray chamber communicating with the reflux chamber, the closable spray hole communicating with the spray chamber, the nozzle body being made of silicone material, and the reflux chamber being used to concentrate the liquid medicine.

[0018] As a supplement to this technical solution, several vertical fibers extending upward are evenly arranged at the edge of the upper end face of the push block structure. The vertical fibers are arranged to facilitate the deformation of the silicone spray head driven by the push block structure, ensuring the closure of the spray hole.

[0019] As a supplement to this technical solution, the outer ring of the conical end is provided with at least one pair of sealing ribs. By providing sealing ribs, the sealing effect of the conical end is improved, and the medicine overflow is prevented.

[0020] As a supplement to this technical solution, the main pipe has two channels, one as a liquid inlet channel and the other as an exhaust channel.

[0021] Beneficial Effects: This invention relates to a local drug delivery device for bronchoscopy. It features a main tube for inserting the bronchoscope and two channels for convenient drug injection. During injection, one channel serves as the injection channel, and the other as the exhaust channel. A syringe connector facilitates the connection of the injection port to the two channels. A tapered end facilitates drug reflux, allowing the drug to fill both channels. A silicone nozzle and a closable nozzle facilitate sealing the nozzle and achieving drug reflux filling. A wire-pulling structure and a pusher structure compress the nozzle body, closing the closable nozzle. This device offers precise control of drug injection volume, simple structure, ease of manufacturing, and improved therapeutic efficacy. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention;

[0023] Figure 2 yes Figure 1 Sectional view along the AA direction;

[0024] Figure 3 This is the right view of the present invention;

[0025] Figure 4 yes Figure 3 Sectional view along the BB direction;

[0026] Figure 5 yes Figure 2 Enlarged view of a section at point C;

[0027] Figure 6 yes Figure 2 Enlarged view of a section at point D;

[0028] Figure 7 yes Figure 4 Enlarged view of a section at point E in the middle;

[0029] Figure 8 yes Figure 4 Enlarged view of a section at point F in the middle;

[0030] Figure 9 This is a top view of the syringe connector;

[0031] Figure 10 This is a top view of the aforementioned supervisor.

[0032] Illustration: 1. Main tube, 2. Syringe connector, 3. Conical end, 4. Silicone injection head, 5. Wire drawing groove, 6. Observation window, 7. Drug indicator strip, 8. Baffle, 9. Wire drawing structure, 10. Variable flange, 11. Dual-hole syringe limiting port, 12. Channel, 13. Hard cone, 14. Return chamber, 15. Silicone layer, 16. Injection head body, 17. Injection chamber, 18. Closable injection hole, 19. Push block structure, 20. Vertical fiber. Detailed Implementation

[0033] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0034] Embodiments of the present invention relate to a local drug delivery device for a bronchoscope, such as... Figure 1 As shown in Figure 4, the device includes a main tube 1, a syringe connector 2, and a conical end 3. A baffle 8 is provided in the middle of the interior of the main tube 1, which divides the inner cavity of the main tube 1 into two channels 12. The syringe connector 2 is provided at the upper end of the main tube 1, and the syringe connector 2 is provided with two injection ports 11 corresponding to the two channels 12. The conical end 3 is installed at the lower end of the main tube 1, and a silicone spray head 4 is provided at the lower end of the conical end 3. The silicone spray head 4 is provided with several closable spray holes 18 at the lower end. A vertically movable wire drawing structure 9 is installed in the middle of the baffle 8, and a push block structure 19 connected to the lower end of the wire drawing structure 9 is installed in the lower end of the silicone spray head 4.

[0035] When the drawing structure 9 moves upward, it pulls the push block structure 19, which in turn pushes the rubber head body 16. The rubber head body 16 is squeezed and deformed, and the spray hole 18 is squeezed and closed.

[0036] like Figure 9 and Figure 10As shown, in this technical solution, a main tube 1 is set up as the body for inserting the bronchoscope, and two channels 12 are set up to facilitate drug injection. During drug injection, one channel 12 serves as the injection channel and the other channel 12 serves as the exhaust channel. A syringe connector 2 is set up to facilitate the setting of injection ports 11 that connect with the two channels 12. A conical end 3 is set up as a structure for drug reflux, which facilitates the filling of the two channels 12 with drug. A silicone nozzle 4 and a closable nozzle 18 are set up to facilitate the sealing of the silicone nozzle 4 and realize drug reflux filling. A wire-pulling structure 9 and a push block structure 19 are set up to squeeze the head body 16 and realize the closure of the closable nozzle 18.

[0037] When filling the medication, first connect a syringe and an injection port 11. Then pull the wire-pulling structure 9, which moves upward and pulls the push block structure 19. The push block structure 19 squeezes the rubber head body 16, causing the rubber head body 16 to deform and close the closable injection hole 18. Then push the syringe to inject the medication into one of the channels 12. The air in the main pipe 1 is expelled from the other channel 12 until the liquid levels in the two channels 12 are level. The indicator on the main pipe 1 indicates that there are five milliliters of medication in the main pipe 1. At this time, the medication below the indicator on the main pipe 1 is full, and no air is injected during the medication injection.

[0038] When filling the bronchoscope with medication, the main tube 1 under the bronchoscope needs to be aligned with the patient's position, and the conical end 3 and the silicone nozzle 4 can be inserted into the patient's position. Then, the wire structure 9 is opened, and the silicone nozzle body 16 returns to its original position under elastic action, so that the closable nozzle 18 is opened. Then, five milliliters of air are drawn into the double-ended syringe, and then the syringe connector 2 and the two injection ports 11 of the syringe connector 2 are connected. Then, the double-ended syringe is pushed, and the air in the double-ended syringe enters the main tube 1. The medication in the main tube 1 is sprayed out from the closable nozzle 18.

[0039] Doctors use a bronchoscope to observe the severity of lung disease and determine the dosage of medication based on the severity. The dosage is divided into one milliliter, two milliliters, and three milliliters. After injecting into one infected site, the injection site can be moved to inject into a second infected site. The markings on the double-ended syringe are used to precisely control the amount of medication injected, which greatly improves the treatment effect on the lungs. When all five milliliters of medication have been injected, the above medication filling steps can be repeated to complete the second medication filling.

[0040] like Figure 5 and Figure 6As shown, as a supplement to this technical solution, the upper end of the wire drawing structure 9 is provided with a handle structure, and the upper front side of the baffle 8 is provided with a wire drawing groove 5 that bends to one side. The bent part of the wire drawing groove 5 is used to facilitate the formation of a limit with the handle structure of the wire drawing structure 9.

[0041] In this technical solution, a handle structure is provided to facilitate the pulling of the wire drawing structure 9, a wire drawing groove 5 is provided to facilitate the movement of the wire drawing structure 9, and a bent end is provided to facilitate the insertion of the handle structure into the bent end, thereby facilitating the fixation of the wire drawing structure 9.

[0042] As a supplement to this technical solution, a transparent observation window 6 is provided on the upper front side of the main pipe 1, and a medicine liquid indicator strip 7 is provided on the observation window 6. The transparent observation window 6 is used to facilitate observation of the medicine liquid, and the medicine liquid indicator strip 7 is used to facilitate indication of the filling amount of medicine liquid in the main pipe 1.

[0043] As a supplement to this technical solution, the syringe connector 2 is provided with a double-hole syringe limiting port 10 at its upper end. The double-hole syringe limiting port 10 is provided to facilitate the limiting and docking of the double-headed syringes.

[0044] like Figure 5 As shown in Figure 8, as a supplement to this technical solution, the conical end 3 includes a hard conical head 13, which is a cone shape that is larger at the top and smaller at the bottom. The hard conical head 13 is connected to the lower end of the main pipe 1, and the hard conical head 13 is provided with a return cavity 14 that communicates with the two channels 12.

[0045] In this technical solution, a rigid cone 13 is provided to improve the structural strength of the area and facilitate insertion into the patient's position. A reflux cavity 14 is provided to facilitate the return of the medicine, so that both channels 12 can contain medicine.

[0046] As a supplement to this technical solution, a silicone layer 15 is provided on the outer conical surface of the rigid cone 13. In this technical solution, the silicone layer 15 is provided to reduce discomfort during insertion.

[0047] As a supplement to this technical solution, the silicone spray head 4 includes a nozzle body 16, and the upper end of the nozzle body 16 is provided with a spray chamber 17 that communicates with the return chamber 14. The closable spray hole 18 is connected to the spray chamber 17. The nozzle body 16 is made of silicone material, and the return chamber 14 is used to concentrate the medicine.

[0048] As a supplement to this technical solution, several vertical fibers 20 extending upward are evenly arranged at the edge of the upper end face of the push block structure 19. The vertical fibers 20 are arranged to facilitate the deformation of the silicone spray head 4 driven by the push block structure 19, thereby ensuring the closure of the spray hole 18.

[0049] As a supplement to this technical solution, the outer ring of the conical end 3 is provided with at least one pair of sealing ribs. By providing sealing ribs, the sealing effect of the conical end 3 is improved, and the medicine overflow is prevented.

[0050] As a supplement to this technical solution, the two channels 12 of the main pipe 1 are one as a liquid inlet channel and the other as an exhaust channel.

[0051] Example 1

[0052] When the drawing structure 9 moves upward, it pulls the push block structure 19, which in turn pushes the rubber head body 16. The rubber head body 16 deforms and is squeezed and deformed. After the rubber head body 16 is squeezed and deformed, the spray hole 18 is squeezed and closed.

[0053] When performing precise injection, the head body 16 is in a compressed state. First, the medication is injected into the main pipe 1 through one injection port 11. A standard syringe with 5 ml of medication is selected, and the injection end of the syringe is inserted into the injection port 11. The medication is then injected, flowing along one channel 12 into the main pipe 1. Air in the main pipe 1 is expelled from the upper end of the other channel 12. After completion, the liquid level is adjusted. The liquid levels in both channels 12 are observed through the observation window 6. By injecting appropriate amounts of air, the air compresses the medication, making the liquid levels in both channels 12 flush. The liquid levels should also align with the medication indicator strip 7, indicating that the main pipe... The tube 1 already contains 5 ml of medication. The device is then inserted into the patient's lung through the endoscope. A double-ended syringe containing 5 ml of air is then removed. Precise positioning is then performed. Under the observation of the endoscope camera, the doctor moves the lower end of the main tube 1, inserting the conical end 3 and the silicone nozzle 4 into the patient's position. Medication is then injected by pushing the double-ended syringe. To inject one milliliter of medication, the double-ended syringe is pushed to eject one milliliter of air. The lower end of the main tube 1 is then moved to change the injection position, and a second injection of medication is performed.

[0054] Example 2

[0055] When this device is used for production, the main pipe 1, baffle 8, syringe connector 2, and hard cone 13 are first formed using a stretch molding die. After completion, the product is removed, and the wire drawing structure 9 is installed. A push block structure 19 is installed on the lower end of the wire drawing structure 9. Then, the silicone spray head 4, silicone layer 15, and hard cone 13 are connected using a mold. The silicone spray head 4 and push block structure 19 are combined. After completion, the hole-opening action is performed. The closable spray hole 18 is formed by piercing with a needle. Then, the wire drawing groove 5 is opened using an opening device. The upper end of the wire drawing structure 9 is bent using tweezers to form a handle structure at the upper end of the wire drawing structure 9. Finally, the upper end of the main pipe 1 is cut with a cutter to form a hole at the upper end of the main pipe 1. After completion, a transparent rubber layer is wrapped around the hole, and the rubber layer and the main pipe 1 are integrated by heat fusion, and a sealed connection is formed between the rubber layer and the main pipe 1.

Claims

1. A local drug delivery device for a bronchoscope, characterized in that: The device includes a main tube (1), a syringe connector (2), and a conical end (3). A baffle (8) is provided in the middle of the main tube (1), which divides the inner cavity of the main tube (1) into two channels (12). A syringe connector (2) is provided at the upper end of the main tube (1), and two injection ports (11) corresponding to the two channels (12) are provided on the syringe connector (2). A conical end (3) is installed at the lower end of the main tube (1), and a silicone spray head (4) is provided at the lower end of the conical end (3). Several closable spray holes (18) are provided on the lower end of the silicone spray head (4). A vertically movable wire drawing structure (9) is installed in the middle of the baffle (8), and a push block structure (19) connected to the lower end of the wire drawing structure (9) is installed inside the lower end of the silicone spray head (4). When the drawing structure (9) moves upward, the drawing structure (9) pulls the push block structure (19), the push block structure (19) pushes the rubber head body (16), the rubber head body (16) is squeezed and deformed, and the spray hole (18) is squeezed and closed. A transparent observation window (6) is provided on the front side of the upper end of the main pipe (1), and a liquid indicator strip (7) is provided on the observation window (6). The two channels (12) of the main pipe (1) are, one as the liquid inlet channel and the other as the exhaust channel.

2. The local drug delivery device for a bronchoscope according to claim 1, characterized in that: The upper end of the wire drawing structure (9) is provided with a handle structure, and the upper front side of the baffle (8) is provided with a wire drawing groove (5) that bends to one side. The bent part of the wire drawing groove (5) is used to facilitate the formation of a limit with the handle structure of the wire drawing structure (9).

3. A local drug delivery device for a bronchoscope according to claim 1, characterized in that: The syringe connector (2) is provided with a double-hole syringe limiting port (10) at its upper end.

4. A local drug delivery device for a bronchoscope according to claim 1, characterized in that: The conical end (3) includes a hard cone (13), which is a cone shape that is larger at the top and smaller at the bottom. The hard cone (13) is connected to the lower end of the main pipe (1). The hard cone (13) has a return cavity (14) that communicates with the two channels (12).

5. A local drug delivery device for a bronchoscope according to claim 4, characterized in that: A layer of silicone (15) is provided on the outer conical surface of the hard cone (13).

6. A local drug delivery device for a bronchoscope according to claim 1, characterized in that: The silicone spray head (4) includes a nozzle body (16), and the upper end of the nozzle body (16) is provided with a spray chamber (17) that communicates with the return chamber (14). The closable spray hole (18) is connected to the spray chamber (17).

7. A local drug delivery device for a bronchoscope according to claim 1, characterized in that: The push block structure (19) has several vertical fibers (20) that extend upwards evenly at the edge of its upper surface.

8. A local drug delivery device for a bronchoscope according to claim 1, characterized in that: The outer ring of the tapered end (3) is provided with at least one pair of sealing ribs.

Images