A rectal administration device

Abstract

The utility model discloses a rectal administration device belongs to rectal administration instrument technical field. The utility model discloses a dosing mechanism and the plugging mechanism, and the plugging mechanism sets up at the end of dosing mechanism, and dosing mechanism includes liquid medicine storage part, liquid medicine delivery part and dosing drive part, and the plugging mechanism includes rectal administration end and connecting end, and the plugging mechanism is connected with dosing mechanism through connecting end, and liquid medicine delivery part is linked with rectal administration end. The utility model simple structure, easy operation, under the mutual cooperation of dosing mechanism and plugging mechanism, realize the continuous operation of dosing, plugging, release liquid medicine to target area, can plugging liquid medicine while guaranteeing that liquid medicine and focus contact fully and absorb, prevent liquid medicine outflow, not only improve the dosing efficiency, reduce drug waste, still reduce the stimulation to the patient, realize the high efficiency and convenience of rectal administration.

Description

Technical Field

[0001] This utility model belongs to the field of rectal drug delivery device technology, and more specifically, relates to a rectal drug delivery device. Background Technology

[0002] In the existing technology, the devices used in clinical practice for rectal drug delivery deliver drugs through the anus. This has advantages such as bypassing the first-pass effect of the liver, reducing gastrointestinal irritation, and rapid absorption. It is especially suitable for children, elderly patients, and people who cannot take oral or injectable medications.

[0003] However, existing rectal drug delivery devices have certain drawbacks. First, traditional rectal drug delivery relies on the patient's position to maintain the drug's retention. However, rectal peristalsis and sphincter relaxation often lead to premature drug expulsion, which not only increases the patient's discomfort and embarrassment but also results in unstable absorption. Clinical studies show that many patients need to be given the drug repeatedly due to leakage, resulting in drug waste and prolonged treatment cycles. Moreover, existing devices are complex to operate. Ordinary catheters lack physical sealing structures and rely on the viscosity resistance of the liquid to prevent backflow. This is not effective at sealing low-viscosity drugs and lacks an active sealing mechanism after drug release. They still rely on external equipment to maintain pressure, which is not only inconvenient to operate but also increases local irritation, leading to temporary discomfort or pain. Utility Model Content

[0004] This invention addresses the technical problems existing in the prior art by providing a rectal drug delivery device.

[0005] To solve the above-mentioned technical problems, the present invention includes a drug delivery mechanism and a blocking mechanism. The blocking mechanism is disposed at the end of the drug delivery mechanism. The drug delivery mechanism includes a drug storage section, a drug delivery section, and a drug delivery drive section. The blocking mechanism includes a rectal drug delivery end and a connecting end. The blocking mechanism is connected to the drug delivery mechanism through the connecting end, and the drug delivery section is connected to the rectal drug delivery end.

[0006] Preferably, the drug delivery mechanism includes a drug delivery body, which includes an outer casing and an internal space disposed within the outer casing. A drug storage unit is disposed within the internal space of the drug delivery body and is connected to a drug delivery unit.

[0007] Preferably, the first end of the drug delivery drive is disposed in the drug delivery body, the first end of the drug delivery drive is provided with a connecting part, and the end of the drug delivery part is provided with a locking engagement part adapted to and connected to the connecting part, so that the drug delivery part and the drug delivery drive can be synchronized through the connecting part and the locking engagement part.

[0008] Preferably, the drug delivery drive unit can move along the axial direction of the drug delivery body, and the drug delivery unit is provided with a drug delivery pipeline, which connects the drug storage unit and the sealing mechanism;

[0009] A sealing structure is provided between the drug storage section, the drug delivery section, and the drug administration drive section. The drug is delivered from the drug storage section to the rectal administration end through the drug administration drive section.

[0010] Preferably, the blocking mechanism is detachably connected to the end of the drug delivery mechanism via a connecting end. The blocking mechanism is provided with a blocking component that allows the drug liquid to flow out, and the blocking component is provided with a drug passage channel that communicates with the outside world.

[0011] Preferably, the sealing component includes a sponge layer and an inner core layer disposed inside the sponge layer, with an isolation layer connected to the inner core layer, and the end of the drug delivery section passing through the isolation layer and communicating with the inner core layer.

[0012] Preferably, the rectal administration end is provided with a through hole, through which the drug solution is delivered from the drug solution delivery unit to the outside;

[0013] The rectal administration end is equipped with a connecting connector.

[0014] Preferably, the inner core layer is provided with an overflow section, which is located on the inner core layer at the outer end of the isolation layer. The medicine enters the outer sponge layer through the overflow section and is then transported to the outside through the sponge layer.

[0015] Preferably, the blocking mechanism has a conical structure and a circular cross-section. The outer diameter of the rectal administration end is smaller than the outer diameter of the connection end, and the outer surface of the blocking mechanism is provided with a hydrophilic coating.

[0016] Preferably, the sealing mechanism is connected to a sealing removal part.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention features a simple structure and easy operation. The drug delivery mechanism is responsible for drug storage and transmission, while the sealing mechanism is connected to the drug delivery mechanism via a connecting end, ensuring convenience and sealing during the drug delivery process. With the cooperation of the drug delivery mechanism and the sealing mechanism, continuous and integrated drug delivery and sealing operations are achieved. The drug solution is released to the target area, ensuring full contact and absorption of the drug solution with the lesion while sealing the solution to prevent leakage. This not only improves drug delivery efficiency and reduces drug waste but also reduces irritation to the patient, achieving high efficiency and convenience of rectal drug delivery. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the rectal feeding device of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of an embodiment of the drug delivery body of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of an embodiment of the drug delivery mechanism of this utility model;

[0023] Figure 4 This utility model Figure 3 A magnified view of the structure at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the injection needle in the retracted state of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of Embodiment 1 of the sealing mechanism of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the sealing mechanism of this utility model;

[0027] Figure 8 This is a schematic diagram showing the connection between the blocking mechanism and the drug delivery mechanism provided in Embodiment 2 of this utility model;

[0028] Figure 9 This is a schematic diagram showing the blocking mechanism and the drug delivery mechanism of this utility model in a separated state.

[0029] Explanation of symbols in the diagram:

[0030] 1. Drug delivery mechanism; 2. Sealing mechanism; 21. Sponge layer; 22. Inner core layer; 23. Rubber pad; 24. Through hole; 25. Overflow part; 3. Drug storage part; 4. Drug delivery part; 41. Spiral seat; 42. Injection needle; 43. Limiting protrusion; 44. Core expansion lock; 5. Drug delivery drive part; 51. Injection core rod; 52. Injection piston; 53. Connecting protrusion; 6. Rectal drug delivery end; 7. Connecting end; 8. Drug delivery body; 81. Outer jacket; 82. Push-pull auxiliary part; 83. Limiting groove; 9. Sealing ring; 10. Traction rope. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] Please see Figure 1This utility model provides a rectal drug delivery device, which includes a drug delivery mechanism 1 and a blocking mechanism 2. The blocking mechanism 2 is disposed at the end of the drug delivery mechanism 1. The drug delivery mechanism 1 includes a drug storage part 3, a drug delivery part 4 and a drug delivery drive part 5. The blocking mechanism 2 includes a rectal drug delivery end 6 and a connecting end 7. The blocking mechanism 2 is connected to the drug delivery mechanism 1 through the connecting end 7. The drug delivery part 4 is connected to the rectal drug delivery end 6.

[0033] This invention features a simple structure and easy operation. The drug delivery mechanism 1 is responsible for the storage and transmission of the drug, while the sealing mechanism 2 is connected to the drug delivery mechanism 1 via the connecting end 7, ensuring convenience and sealing during the drug delivery process. With the cooperation of the drug delivery mechanism 1 and the sealing mechanism 2, continuous and integrated operation of drug delivery and sealing is achieved. The drug solution is released to the target area, ensuring that the drug solution fully contacts and is absorbed by the lesion, while sealing the drug solution to prevent it from flowing out. This not only improves the efficiency of drug delivery and reduces drug waste, but also reduces irritation to the patient, achieving high efficiency and convenience of rectal drug delivery.

[0034] In this embodiment, as Figure 1 , Figure 2 As shown, the drug delivery mechanism 1 includes a drug delivery body 8, which includes an outer casing 81 and an internal space disposed within the outer casing 81. A drug storage unit 3 is disposed within the internal space of the drug delivery body 8 and is connected to a drug delivery unit 4.

[0035] Specifically, the drug delivery body 8 is a sleeve-shaped tubular structure with a circular cross-section. Both its front and rear ends have open openings, which, when connected to the drug delivery unit 4 and the drug delivery drive unit 5, achieve internal sealing, facilitating drug absorption and storage within the internal space. The first end of the drug delivery body 8 has a wide opening to facilitate the installation and operation of the drug delivery drive unit 5, while the second end has a narrow opening to facilitate insertion and connection with the sealing mechanism 2. This allows for drug delivery and sealing at the lesion site through the sealing mechanism 2, preventing drug leakage.

[0036] This invention uses a drug delivery drive unit 5 to transport the drug solution from the drug storage unit 3 to the rectal administration end 6. The drug delivery drive unit 5 is arranged along the axial direction of the drug delivery body 8, and the first end of the drug delivery drive unit 5 is located inside the drug delivery body 8. The drug delivery drive unit 5 includes an injection core rod 51 and an injection piston 52 located at the end of the injection core rod 51. The injection piston 52 is engaged with the end of the injection core rod 51 located in the drug delivery body 8. By pushing the injection core rod 51, the piston is driven to move axially, increasing the internal pressure of the drug delivery body 8. The drug solution is injected into the sealing mechanism 2 or the drug delivery site through the drug delivery unit 4 at the end. When the injection core rod 51 is pulled, the piston moves backward, decreasing the internal pressure of the drug delivery body 8. Under the action of external atmospheric pressure, the drug solution can be forced into the drug delivery body 8 for the required drug solution to be absorbed.

[0037] In this embodiment, the outer diameter of the injection core rod 51 matches the inner diameter of the outer sleeve 81 of the drug delivery body 8, ensuring that the injection core rod 51 can move flexibly along the axial direction of the drug delivery body 8. The outer diameter of the injection core rod 51 is slightly smaller than the inner diameter of the outer sleeve 81 of the drug delivery body 8. The outer diameter of the injection piston 52 is adapted to the inner diameter of the outer sleeve 81 of the drug delivery body 8. The injection piston 52 is made of elastic material, ensuring that the outer periphery of the injection piston 52 can fit tightly against the inner wall of the outer sleeve 81. This ensures the air pressure inside the tube while preventing the drug liquid from flowing out and affecting drug delivery.

[0038] Furthermore, the first end of the drug delivery body 8 is provided with a push-pull auxiliary part 82, which is a protrusion extending outward along the radial direction of the drug delivery body 8. The protrusion cooperates with the injection core rod 51 to facilitate the push-pull action.

[0039] like Figure 3 As shown, the drug delivery unit 4 is located at the second end of the drug delivery body 8. The drug delivery unit 4 is movably connected to the end of the drug delivery body 8. Under the action of external force, the drug delivery unit 4 can move along the axial direction of the drug delivery body 8. The drug delivery unit 4 is provided with a drug delivery pipeline, which connects the drug storage unit 3 and the sealing mechanism 2.

[0040] Specifically, such as Figure 3 , Figure 4 As shown, the drug delivery unit 4 includes a spiral seat 41 and an injection needle 42. The injection needle 42 is fixedly connected to the end of the spiral seat 41. The spiral seat 41 has a drug channel arranged axially inside, which can connect the drug storage unit 3 in the drug delivery body 8 with the injection needle 42. The end of the injection needle 42 has a beveled needle structure for insertion into the sealing mechanism 2 for drug delivery. The outer periphery of the spiral seat 41 is provided with a circumferentially arranged limiting protrusion 43. The inner wall of the narrow opening structure at the second end of the drug delivery body 8 is provided with a circumferentially arranged limiting groove 83. The limiting protrusion 43 can engage with the limiting groove 83. Axial limiting is achieved through the limiting protrusion 43 and the limiting groove 83, which restricts the axial displacement of the drug delivery unit 4 and prevents the drug delivery unit 4 from accidentally leaving the drug delivery body 8 under pressure, thus affecting normal drug delivery or injection safety.

[0041] Furthermore, in this embodiment, the end of the injection core rod 51 is provided with a connecting part, which is located at the front end of the injection piston 52. The end of the spiral seat 41 of the drug delivery part 4 is provided with a locking engagement part that is adapted to connect with the connecting part. The drug delivery part 4 and the drug delivery drive part 5 are synchronized through the connecting part and the locking engagement part.

[0042] Specifically, such as Figure 4As shown, the connecting part is a connecting protrusion 53 located at the end of the injection core rod 51. The connecting protrusion 53 has a variable diameter structure, with a slightly larger end diameter, which facilitates engagement and prevents detachment. The locking part is an expansion core lock 44 located inside the spiral seat 41. The expansion core lock 44 has a locking groove, the size of which is smaller than the diameter of the connecting protrusion 53. Moreover, the expansion core lock 44 is made of elastic material and has a certain degree of deformation, which facilitates the connecting protrusion 53 to be engaged into the expansion core lock 44, thereby achieving a stable locking connection.

[0043] In this embodiment, as Figure 3 , Figure 5 As shown, when rectal administration is achieved through the cooperation of the drug delivery mechanism 1 and the blocking mechanism 2, the drug solution and the blocking mechanism 2 reach the lesion site, allowing the drug solution to fully contact the lesion and be absorbed, while the blocking mechanism 2 remains in the rectum to release the drug solution; at this time, the injection core rod 51 of the drug delivery drive unit 5 pushes the injection piston 52 to the end, so that the connecting protrusion 53 at the end engages with the expansion core lock 44, thereby achieving synchronous action of the drug delivery unit 4 and the drug delivery drive unit 5, retracting the injection core rod 51, causing the drug delivery unit 4 and the drug delivery drive unit 5 to retract into the outer sleeve 81 of the drug delivery body 8, so that the injection needle 42 is not exposed, the injection needle 42 is disengaged from the blocking mechanism 2, and the blocking mechanism 2 remains in the rectum.

[0044] Furthermore, as a preferred embodiment of this utility model, the connecting protrusion 53 and the injection core rod 51 can adopt an integral structure or a separate connection structure, which can not only realize the driving of the liquid, but also realize the connection between the injection core rod 51 and the liquid delivery unit 4.

[0045] Furthermore, such as Figure 3 , Figure 4 As shown, in this embodiment, the injection piston 52 can serve as a driving force and a sealing force at the same time. Furthermore, a sealing structure is provided between the outer peripheral side of the spiral seat 41 and the inner peripheral side of the end of the drug delivery body 8. The sealing mechanism is a sealing ring 9, which seals the internal space to prevent the drug liquid from flowing out and ensures a stable connection between the spiral seat 41 and the end of the drug delivery body 8.

[0046] Furthermore, a limiting groove is provided on the inner circumference of the end of the drug delivery body 8, and a limiting block is provided on the injection core rod 51 to engage with it. The limiting groove and the limiting block cooperate to prevent the injection piston 52 from leaving the inside of the drug delivery body 8 when it is pushed or pulled backward.

[0047] Furthermore, in this embodiment, the specific structure and principle of the drug delivery mechanism 1 are the same as those of a medical syringe. Both utilize pressure and hydraulic principles for drug aspiration and injection. Drug aspiration and injection are achieved through the cooperation of the syringe, piston, and needle. The syringe, piston, and needle are compatible, and graduations can be set on the syringe wall for liquid volume indication. When aspiration occurs, the piston is pulled, reducing the pressure inside the syringe. Under the action of external atmospheric pressure, the drug is forced into the syringe. When injection occurs, the piston is pushed, increasing the pressure inside the syringe, and the drug is injected into the body through the needle.

[0048] Furthermore, as a preferred embodiment of this utility model, in actual use, the drug delivery mechanism 1 can use a matching syringe and injection needle. The specific material of the drug delivery mechanism 1 can be selected as needed, and can be a disposable material or a reusable material that meets the requirements of medical devices, depending on the actual clinical injection needs.

[0049] Furthermore, in this utility model, the blocking mechanism 2 has a variety of different implementation methods, and specific embodiments are as follows.

[0050] Example 1

[0051] like Figure 3 , Figure 6 As shown, in this embodiment, the blocking mechanism 2 is detachably connected to the end of the drug delivery mechanism 1 via the connecting end 7. The blocking mechanism 2 is provided with a blocking component that can discharge drug liquid. The blocking component is provided with a drug passage that communicates with the outside. The drug delivery mechanism 1 inputs the drug liquid into the blocking component, and then flows into the rectal lesion site through the blocking mechanism 2.

[0052] Specifically, the blocking mechanism 2 has a conical structure and a circular cross-section. The outer diameter of the rectal administration end 6 at the front of the blocking mechanism 2 is smaller than the outer diameter of the rear connecting end 7, which makes it easier to insert the blocking mechanism 2 into the rectum from the front end, reducing patient discomfort. It also better adapts to the physiological structure inside the rectum. In addition, the larger outer diameter of the rear connecting end 7 can provide stable blocking, ensuring the safety and reliability of the drug administration process.

[0053] Furthermore, the specific length and radial dimensions of the sealing mechanism 2 can be adapted and adjusted according to different needs, and different specifications can be made to suit different lesion locations in different children and adults.

[0054] The sealing component includes a sponge layer 21 and an inner core layer 22 disposed inside the sponge layer 21. The inner core layer 22 is disposed on the inner circumference of the sponge layer 21. The sponge layer 21 is composed of sponge, and the inner core layer 22 can prevent the internal medicine from flowing out. An isolation layer is connected to the inner core layer 22. The isolation layer includes a rubber pad 23. The rubber pad 23 has a circular structure and is snapped into the inner circumference of the axial center of the inner core layer 22. The outer circumference of the rubber pad 23 is in contact with the inner circumference of the inner core layer 22. The injection needle 42 of the medicine delivery unit 4 can penetrate the rubber pad 23 of the isolation layer and connect with the inner side of the inner core layer 22, thereby delivering the medicine from the medicine storage unit 3 of the drug delivery mechanism 1 to the front end of the sealing mechanism 2.

[0055] In this embodiment, the end of the blocking mechanism 2 is abutted against the end of the drug delivery mechanism 1, and the blocking mechanism 2 is temporarily connected to the drug delivery mechanism 1 by inserting the injection needle 42 into the blocking mechanism 2.

[0056] The inner core layer 22 has a hollow space running through it from front to back. It is divided into two spaces, front and back, by the rubber pad 23 of the isolation layer. The injection needle 42 can pass through the rear space to enter the front space.

[0057] In this embodiment, the end of the rectal administration end 6 of the blocking mechanism 2 is provided with a through hole 24. The drug solution delivered by the injection needle 42 can be delivered to the lesion site at the front end through the through hole 24. When the injection core rod 51 is pushed, the drug enters the rectum through the front through hole 24 and the drug directly contacts the lesion. The blocking mechanism 2, which is temporarily left in the body, effectively prevents the drug solution from flowing out under the sealing of the sponge layer 21 and the rubber pad 23.

[0058] In this embodiment, as Figure 6 As shown, the occlusion mechanism 2 is connected to an occlusion removal part, which is a traction rope 10 connected to the end of the occlusion mechanism 2. The traction rope 10 has a sufficient length to ensure that when the occlusion mechanism 2 is in the patient's body, the outer end of the traction rope 10 is located outside the body, making it convenient to pull the traction rope 10 to quickly remove the occlusion mechanism 2 from the rectum.

[0059] Furthermore, in this embodiment, the front end of the rectal administration end 6 is provided with a connecting connector, which can be adapted to connect to the corresponding administration tubing or administration catheter, and can meet the clinical needs for administration to deeper sites.

[0060] Furthermore, in this embodiment, the outer surface of the sponge layer 21 is provided with a hydrophilic coating. The hydrophilic coating can be activated by water. When the hydrophilic coating is activated by water, it can reduce the damage to the rectal lining caused by the sealing mechanism 2.

[0061] Example 2

[0062] like Figure 7 , Figure 8As shown, in this embodiment, the blocking mechanism 2 is detachably connected to the end of the drug delivery mechanism 1 via the connecting end 7. The blocking mechanism 2 is provided with a blocking component that can discharge drug liquid. The blocking component is provided with a drug passage that communicates with the outside. The drug delivery mechanism 1 inputs the drug liquid into the blocking component, and then flows into the rectal lesion site through the blocking mechanism 2.

[0063] Specifically, the blocking mechanism 2 has a conical structure and a circular cross-section. The outer diameter of the rectal administration end 6 at the front of the blocking mechanism 2 is smaller than the outer diameter of the rear connecting end 7, which makes it easier to insert the blocking mechanism 2 into the rectum from the front end, reducing patient discomfort. It can also better adapt to the physiological structure inside the rectum. Moreover, the larger outer diameter of the rear connecting end 7 can provide stable blocking, ensuring the safety and reliability of the drug administration process.

[0064] Furthermore, the specific length and radial dimensions of the sealing mechanism 2 can be adapted and adjusted according to different needs, and different specifications can be made to suit different lesion locations in different children and adults.

[0065] The sealing component includes a sponge layer 21 and an inner core layer 22 disposed inside the sponge layer 21. The inner core layer 22 is disposed on the inner circumference of the sponge layer 21. The sponge layer 21 is composed of sponge, and the inner core layer 22 can prevent the internal medicine from flowing out. An isolation layer is connected to the inner core layer 22. The isolation layer includes a rubber pad 23. The rubber pad 23 has a circular structure and is snapped into the inner circumference of the axial center of the inner core layer 22. The outer circumference of the rubber pad 23 is in contact with the inner circumference of the inner core layer 22. The injection needle 42 of the medicine delivery unit 4 can penetrate the rubber pad 23 of the isolation layer and connect with the inner side of the inner core layer 22, thereby delivering the medicine from the medicine storage unit 3 of the drug delivery mechanism 1 to the front end of the sealing mechanism 2.

[0066] In this embodiment, the end of the blocking mechanism 2 is abutted against the end of the drug delivery mechanism 1, and the blocking mechanism 2 is temporarily connected to the drug delivery mechanism 1 by inserting the injection needle 42 into the blocking mechanism 2.

[0067] The inner core layer 22 has a hollow space running through it from front to back. It is divided into two spaces, front and back, by the rubber pad 23 of the isolation layer. The injection needle 42 can pass through the rear space to enter the front space.

[0068] Furthermore, the inner core layer 22 is provided with an overflow section 25. The overflow section 25 is located on the inner core layer 22 at the outer end of the isolation layer. The medicine enters the outer sponge layer 21 through the overflow section 25 and is then transported to the outside through the sponge layer 21.

[0069] Specifically, such as Figure 7As shown, the rectal administration end 6 of the sealing mechanism 2 has a blind hole structure, preventing the medication from flowing out. The overflow part 25 is located at the front end of the inner core layer 22 and on the inner core layer 22 in the space at the front end of the rubber pad 23. The overflow part 25 is an overflow hole or overflow groove on the side wall of the inner core layer 22. Multiple overflow parts 25 are evenly distributed. The overflow part 25 connects the internal space of the inner core layer 22 with the outer sponge layer 21. The medication delivered by the injection needle 42 can be delivered to the outer sponge layer 21 through the overflow hole or overflow groove on the inner core layer 22. Since the lesion is located on the outer periphery of the sealing mechanism, when the injection core rod 51 is pushed, the medication is absorbed by the sponge layer 21 through the overflow part 25. The sponge is wrapped by the lesion, allowing the medication to fully contact and be absorbed by the lesion. The sealing mechanism 2, which is temporarily left in the body, effectively prevents the medication from flowing out under the sealing of the sponge layer 21 and the rubber pad 23.

[0070] In this embodiment, the occlusion mechanism 2 is connected to an occlusion removal part, which is a traction rope 10 connected to the end of the occlusion mechanism. The traction rope 10 has a sufficient length to ensure that when the occlusion mechanism is in the patient's body, the outer end of the traction rope 10 is located outside the body, making it convenient to pull the traction rope 10 to quickly remove the occlusion mechanism 2 from the rectum.

[0071] Furthermore, in this embodiment, the outer surface of the sponge layer 21 is provided with a hydrophilic coating. The hydrophilic coating can be activated by water. When the hydrophilic coating is activated by water, it can reduce the damage to the rectal lining caused by the sealing mechanism.

[0072] Settings not mentioned in this embodiment can be the same as those in Embodiment 1, or can be adapted and adjusted according to actual usage needs.

[0073] This invention, through the sealing mechanism 2, ensures that the medication fully contacts and is absorbed by the lesion while simultaneously sealing the medication to prevent leakage. The sealing is stable and easy to operate. Moreover, after the medication release is complete, the sealing mechanism can be removed using the traction rope 10, reducing the risk of foreign body retention. This not only improves the efficiency of medication administration and reduces drug waste but also reduces the difficulty of operation and minimizes stimulation to the patient. It eliminates the need for the patient to maintain a special body position to ensure medication retention, reducing patient discomfort and embarrassment, and achieving high efficiency and convenience in rectal medication administration.

[0074] The working process of this utility model is as follows:

[0075] like Figure 3 , Figure 9As shown, first, remove the blocking mechanism 2 and place it in physiological saline to activate its hydrophilic coating. Then, remove the drug delivery mechanism 1, pull out the injection core 51 to draw the drug to be used, insert the injection needle 42 of the drug delivery mechanism 1 into the blocking mechanism 2, and penetrate the rubber pad 23 with the injection needle 42. Hold the drug delivery mechanism 1 and the traction rope 10, and push the blocking mechanism 2 into the rectum from the anus of the patient to the lesion location. At this time, push the injection core 51, and the drug is injected into the blocking mechanism 2 through the injection needle 42. The blocking mechanism 2 pushes the drug directly into the rectum or onto the blocking mechanism 2 through the through hole 24 at the end or the overflow part 25 on its inner core layer 22, and releases it to the target area through the blocking mechanism 2.

[0076] Then, continue pushing the injection core rod 51 to its end, so that the connecting protrusion 53 at the end engages with the expansion core lock 44. Retract the injection core rod 51, thereby causing the entire drug delivery unit 4 to retract into the outer sleeve 81 of the drug delivery body 8, and the end of the injection needle 42 is not exposed. The injection needle 42 is disengaged from the blocking mechanism 2, leaving the blocking mechanism 2 in the patient's rectum. The drug takes effect, and the blocking mechanism 2 left in the body can effectively prevent the drug from flowing out under the sealing of the sponge layer 21 and the rubber pad 23. After the drug takes effect, the blocking mechanism 2 is removed from the rectum by pulling the exposed traction rope 10, thus completing the clinical drug administration process.

[0077] This invention provides a simple and easy-to-operate rectal drug delivery device. The drug delivery mechanism 1 is responsible for drug storage and delivery, and the sealing mechanism 2 is connected to the drug delivery mechanism 1 through the connecting end 7 to ensure convenience and sealing during the drug delivery process. With the cooperation of the drug delivery mechanism 1 and the sealing mechanism 2, continuous and integrated operation of drug delivery and sealing is achieved. The drug solution is released to the target area. While ensuring that the drug solution fully contacts and is absorbed by the lesion, the drug solution can be sealed to prevent drug leakage. The sealing is stable and easy to operate. Moreover, after the drug release is completed, the sealing mechanism can be removed by the traction rope 10 to reduce the risk of foreign body retention. This not only improves the drug delivery efficiency and reduces drug waste, but also reduces the difficulty of operation and reduces the stimulation to the patient. It does not require the patient to maintain a special body position to ensure the drug solution stays, reducing the patient's discomfort and embarrassment, and achieving high efficiency and convenience of rectal drug delivery.

[0078] In the description of this utility model, it should be understood that terms such as “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rectal drug delivery device, comprising a drug delivery mechanism and a blocking mechanism, characterized in that, The blocking mechanism is disposed at the end of the drug delivery mechanism, which includes a drug storage section, a drug delivery section, and a drug delivery drive section. The blocking mechanism includes a rectal delivery end and a connecting end. The blocking mechanism is connected to the drug delivery mechanism through the connecting end, and the drug delivery section is connected to the rectal delivery end. The blocking mechanism is provided with a blocking component that allows drug to flow out. The blocking component includes a sponge layer and an inner core layer disposed inside the sponge layer. An isolation layer is connected to the inner core layer, and the end of the drug delivery section passes through the isolation layer and communicates with the inner core layer.

2. The rectal drug delivery device according to claim 1, characterized in that, The drug delivery mechanism includes a drug delivery body, which includes an outer casing and an internal space disposed within the outer casing. The drug storage unit is disposed within the internal space of the drug delivery body and is connected to the drug delivery unit.

3. The rectal drug delivery device according to claim 2, characterized in that, The first end of the drug delivery drive is disposed in the drug delivery body. The first end of the drug delivery drive is provided with a connecting part. The end of the drug delivery part is provided with a locking fit part that is adapted to and connected to the connecting part. The synchronous operation of the drug delivery part and the drug delivery drive is realized through the connecting part and the locking fit part.

4. A rectal drug delivery device according to claim 2, characterized in that, The drug delivery drive unit can move along the axial direction of the drug delivery body, and the drug delivery unit is provided with a drug delivery pipeline, which connects the drug storage unit and the sealing mechanism. A sealing structure is provided between the drug storage section, the drug delivery section, and the drug delivery drive section, and the drug delivery drive section delivers the drug from the drug storage section to the rectal delivery end.

5. A rectal drug delivery device according to claim 1, characterized in that, The blocking mechanism is detachably connected to the end of the drug delivery mechanism via the connecting end, and the blocking component is provided with a drug passage that communicates with the outside world.

6. A rectal drug delivery device according to claim 1, characterized in that, The rectal administration end is provided with a through hole, through which the drug solution is transported from the drug solution delivery unit to the outside; The rectal administration end is provided with a connecting connector.

7. A rectal drug delivery device according to claim 1, characterized in that, The inner core layer is provided with an overflow section, which is located on the inner core layer at the outer end of the isolation layer. The medicine enters the outer sponge layer through the overflow section and is then transported to the outside through the sponge layer.

8. A rectal drug delivery device according to claim 1, characterized in that, The blocking mechanism has a conical structure and a circular cross-section. The outer diameter of the rectal administration end is smaller than the outer diameter of the connection end. The outer surface of the blocking mechanism is provided with a hydrophilic coating.

9. A rectal drug delivery device according to claim 1, characterized in that, The sealing mechanism is connected to a sealing removal part.

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