A drug delivery device for cancer patients

Abstract

This utility model belongs to the field of medical device technology, and particularly relates to a drug delivery device for cancer patients, including a protective box. A drug solution tank is threadedly installed on the top of the protective box. A partition plate is provided in the lower middle part of the drug solution tank, dividing the inner cavity of the drug solution tank into an upper drug storage chamber and a lower drive chamber. By setting up the protective box and the drug solution tank, the cartridge and needle can be retracted into the inner cavity of the protective box when not in use, thereby protecting the cartridge and needle and preventing the needle from being exposed to the external environment for a long time and causing infection. This provides effective protection for both the device and the patient. By setting up a drive component, a motor is used to provide driving force, replacing the traditional method of manually controlling the displacement of the cartridge, which greatly saves manpower and improves the efficiency and comfort of the device.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a drug delivery device for cancer patients. Background Technology

[0002] Tumors attach to arteries and other blood vessels, connecting with the body's blood supply through their own growth vessels to support their growth. In oncology, it is common to use a drug delivery device to deliver inhibitors that target tumor blood vessels, cutting off the tumor's nutrient supply to achieve a therapeutic effect. However, when administering medication to a patient's tumor, medical staff often use syringes to administer the medication little by little to the tumor. This not only makes it difficult to quickly deliver the medication to the tumor, but also requires carrying different medication bottles, which is inconvenient and increases the workload of medical staff.

[0003] For example, Chinese patent CN218572263U discloses a thoracotomy and peritoneal puncture medication device for cancer patients, including a medication applicator, a medication pack, and a puncture needle. The medication pack and puncture needle are both installed at the lower part of the medication applicator. The medication pack and the medication applicator, as well as the puncture needle and the medication applicator, are connected via flexible tubing. A limiting collar for limiting the dosage is movably installed on the outer side of the medication applicator. A retaining ring for use with the limiting collar is fixedly installed on the outer surface of one end of the medication applicator. A push rod is movably installed on the inner side of the medication applicator, and a push cap is fixedly installed on the outer surface of one end of the push rod. The push cap and the limiting collar are connected by two sets of limiting pull rods. A second circular hole is formed through the middle of the limiting collar. By setting the limiting collar, this thoracotomy and peritoneal puncture medication device for cancer patients has a dosage limiting structure, avoiding over-dose of medication and improving its accuracy during use.

[0004] For example, Chinese Patent CN215458464U discloses a portable rapid drug delivery device that effectively solves the problems of inconvenience in quickly and effectively administering medication to patients' tumors and the heavy workload of medical staff. It includes a tube with an axial orientation and a downward-facing opening. A hollow drug delivery cartridge is coaxially arranged inside the tube. The rear side of the drug delivery cartridge is slidably connected to the inner wall of the tube via a pusher block. A screw rod, located axially behind the drug delivery cartridge and threadedly connected to the pusher block, is rotatably connected inside the tube. A drug dispensing tube is coaxially arranged at the lower end of the drug delivery cartridge, and its lower end can extend out of the tube and is coaxially threadedly connected to a drug dispensing needle, which can be located inside the tube. A pusher plate is coaxially slidably connected inside the drug delivery cartridge. A drug storage cavity with an upward-facing opening is coaxially opened on the upper side of the tube. The bottom of the drug storage cavity is connected to the bottom of the drug delivery cartridge via a conduit. This invention has a clever structure and is easy to use. Rotating the knob facilitates the up-and-down movement of the drug dispensing needle via the drug delivery cartridge to administer medication to the patient's tumor, and it is also easy to carry.

[0005] Both of the aforementioned patents have some drawbacks in use. For example, while both Patent Application 1 and Patent Application 2 achieve portable drug delivery by storing the medication and then administering it in multiple injections using a syringe, the device in Patent Application 1 suffers from several drawbacks. Because the puncture needle remains externally exposed during use, it lacks effective protection, potentially leading to contamination and adverse effects on the patient's health. The device in Patent Application 2 requires manual adjustment of a knob to extend the cartridge and needle from the protective tube, but this manual extension and retraction is inefficient and cumbersome for each injection. Therefore, we propose a drug delivery device for cancer patients. Utility Model Content

[0006] The purpose of this invention is to provide a drug delivery device for cancer patients to solve the problems mentioned in the background art.

[0007] In view of this, the present invention provides a drug delivery device for cancer patients, comprising:

[0008] A protective box has a medicine tank threaded onto its top. A partition plate is installed in the lower middle part of the medicine tank, dividing its interior into an upper storage chamber and a lower drive chamber. A top cover is inserted into the top opening of the medicine tank, and a support plate is fixedly installed at the bottom opening. A medicine cartridge is located in the middle of the protective box's interior. A delivery pipe is fixedly installed at the bottom of the medicine storage chamber, and a medical-grade one-way valve is fixedly installed at the other end of the delivery pipe. An infusion tube is fixedly installed at the other end of the medical-grade one-way valve, and the other end of the infusion tube is connected to the bottom of the medicine cartridge. A piston is slidably installed inside the medicine cartridge.

[0009] A feeding assembly is disposed on the periphery of the cartridge and is used to control the injection and suction of the drug solution inside the cartridge.

[0010] A drive assembly is disposed on the periphery of the cartridge and is used to control the vertical displacement of the cartridge within the protective box.

[0011] In this technical solution, the top cover is fitted with multiple evenly distributed sealing rings on the circumferential side wall inside the medicine tank.

[0012] In this technical solution, a needle tube is fixed at the bottom of the cartridge, and the needle tube and the cartridge are integrally formed. A needle tip is inserted and installed at the bottom end of the needle tube, and a through hole is provided at the bottom of the protective box to accommodate the needle tip.

[0013] In this technical solution, the feeding component includes:

[0014] A limiting plate is fixedly installed on the inner wall of the protective box. The side wall of the protective box has an opening that matches the groove of the limiting plate. A push plate is slidably installed inside the limiting plate. An inverted L-shaped push rod is fixedly installed on the back of the push plate, and the other end of the push rod passes through the upper surface of the cartridge and is fixed to the piston.

[0015] In this technical solution, a spring is provided directly above the piston, which is sleeved with the push rod. The two ends of the spring are fixed to the upper surface of the piston and the inner wall of the cartridge, respectively.

[0016] In this technical solution, the outer wall of the push plate is provided with anti-slip texture.

[0017] In this technical solution, the driving component includes:

[0018] A C-shaped column is disposed around the periphery of the cartridge case and fixed to the inner bottom surface of the protective box. A lead screw is rotatably installed inside the C-shaped column, and a threaded block that slides with the C-shaped column is threaded onto the lead screw. A clamp is sleeved and fixed to the outer wall of the cartridge case, and the threaded block is fixed to the clamp. A power supply is fixedly installed on the upper surface of the support plate. A control panel and a motor are disposed around the power supply. The power supply, control panel, and motor are electrically connected. The output shaft of the motor passes through the support plate and is coaxially connected to the lead screw.

[0019] The beneficial effects of this utility model are:

[0020] 1. This drug delivery device for cancer patients, by setting up a protective box and a drug solution tank, allows the cartridge and needle to retract into the inner cavity of the protective box when not in use, thereby protecting the cartridge and needle and preventing the needle from being exposed to the external environment for a long time and causing infection. It plays an effective protective role for both the device and the patient.

[0021] 2. This drug delivery device for cancer patients, by setting up a drive component, uses a motor to provide driving force, replacing the traditional device that requires manual control of the drug cartridge displacement, greatly saving manpower and improving the efficiency and comfort of the device. Attached Figure Description

[0022] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the protective box and the medicine tank in this utility model;

[0025] Figure 4This is a schematic diagram of the structure of the upper cover and sealing ring in this utility model;

[0026] Figure 5 This is a schematic diagram of the drive component in this utility model;

[0027] Figure 6 This is a schematic diagram of the material pushing component in this utility model.

[0028] The markings in the diagram are as follows:

[0029] 1. Protective box; 2. Medicine tank; 3. Top cover; 4. Sealing ring; 5. Support plate; 6. Medicine cartridge; 7. Infusion tube; 8. Medical-grade one-way valve; 9. Infusion tube; 10. Needle; 11. Needle; 12. Piston; 13. Spring; 14. Push rod; 15. Limiting plate; 16. Push plate; 17. Clamp; 18. C-shaped column; 19. Lead screw; 20. Threaded block; 21. Power supply; 22. Control panel; 23. Motor. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0032] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0034] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0035] Example 1:

[0036] Please see Figure 1 - Figure 6 As shown, this embodiment provides a drug delivery device for cancer patients, comprising:

[0037] A protective box 1 is provided. A medicine tank 2 is threadedly installed on the top of the protective box 1. A partition plate is provided in the lower middle part of the medicine tank 2, which divides the inner cavity of the medicine tank 2 into an upper medicine storage chamber and a lower drive chamber. A top cover 3 is inserted and installed at the top opening of the medicine tank 2. A support plate 5 is fixedly installed at the bottom opening of the medicine tank 2. A medicine cartridge 6 is provided in the middle of the inner cavity of the protective box 1. A delivery pipe 7 is fixedly installed at the bottom of the medicine storage chamber of the medicine tank 2. A medical-grade one-way valve 8 is fixedly installed at the other end of the delivery pipe 7. An infusion pipe 9 is fixedly installed at the other end of the medical-grade one-way valve 8, and the other end of the infusion pipe 9 is connected to the bottom of the medicine cartridge 6. A piston 12 is slidably installed inside the medicine cartridge 6.

[0038] The pusher assembly is located on the periphery of the cartridge 6 and is used to control the injection and suction of the drug liquid inside the cartridge 6.

[0039] A drive assembly is disposed around the cartridge 6 and is used to control the up-and-down movement of the cartridge 6 within the inner cavity of the protective box 1.

[0040] The upper part of the medicine tank 2 contains a storage chamber for patient medications. To refill medications, simply pull the handle on the upper surface of the cover 3 to remove it from the top of the medicine tank 2. It's worth noting that both the protective box 1 and the medicine tank 2 in this application are made of medical-grade high-permeability resin, specifically ULTEM™ HU resin from SABIC Innovative Materials. This resin is compatible with various mainstream sterilization technologies, such as vaporized hydrogen peroxide (VHP) gas plasma, autoclave, gamma radiation, electron beam, X-ray, and ultraviolet-C. After multiple sterilization cycles, this material maintains its excellent strength, dimensional stability, and aesthetics, effectively extending the lifespan of the medical device. When this device is needed to administer medication to a patient, the drive assembly is activated. The drive assembly moves the cartridge 6 downward, causing the needle 11 to gradually extend from the inner cavity of the protective box 1. Once the needle 11 is fully extended, the drive assembly is stopped. At this time, the push assembly is pushed upward, allowing the medication in the inner cavity of the protective box 1 to enter below the piston 12 through the delivery tube 7, the medical-grade one-way valve 8, and the infusion tube 9. Then, the push assembly is pushed downward, and the medication is discharged through the needle 11, completing the medication administration to the patient.

[0041] Example 2:

[0042] This embodiment provides a drug delivery device for cancer patients. In addition to the technical solutions of the above embodiments, it also has the following technical features: a plurality of evenly distributed sealing rings 4 are fitted onto the circumferential side wall of the upper cover 3 inside the drug tank 2.

[0043] By setting a sealing ring 4, the airtightness of the medicine storage chamber of the medicine tank 2 is ensured when the top cover 3 is closed, preventing external dust and other substances from entering the medicine.

[0044] Example 3:

[0045] This embodiment provides a drug delivery device for cancer patients. In addition to the technical solutions of the above embodiments, it also has the following technical features: a needle tube 10 is fixed at the bottom of the cartridge 6, and the needle tube 10 and the cartridge 6 are integrally formed. A needle 11 is inserted and installed at the bottom end of the needle tube 10. A through hole is provided at the bottom of the protective box 1 to accommodate the needle 11.

[0046] The needle 11 is inserted into the syringe 10, allowing the needle 11 to be freely removed from the syringe 10 for replacement.

[0047] Example 4:

[0048] This embodiment provides a drug delivery device for cancer patients, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including a feeding assembly comprising:

[0049] A limiting plate 15 is fixedly installed on the inner wall of the protective box 1. The side wall of the protective box 1 has an opening that matches the groove of the limiting plate 15. A push plate 16 is slidably installed inside the limiting plate 15. An inverted L-shaped push rod 14 is fixedly installed on the back of the push plate 16, and the other end of the push rod 14 passes through the upper surface of the cartridge 6 and is fixed to the piston 12.

[0050] When the feeding assembly is working, the operator pushes the push plate 16 by hand. For example, when the push plate 16 is pushed upward, the push plate 16 can drive the piston 12 to move upward through the push rod 14. At this time, a negative pressure is generated in the space below the piston 12. Atmospheric pressure draws the liquid medicine into the space below the cartridge 6 through the delivery pipe 7, infusion pipe 9 and other pipes. The same applies when it is pushed downward. However, under the action of the medical-grade one-way valve 8, the liquid medicine cannot flow back through the infusion pipe 9. It is worth noting that the medical-grade one-way valve 8 is located near the bottom of the cartridge 6, thereby reducing the amount of liquid medicine remaining in the infusion pipe 9. In addition, the cartridge 6 is made of a high-transparency material, which is the same material as the protective box 1 and the liquid medicine tank 2, making it easy for the operator to observe the liquid medicine usage status in the cartridge 6. At the same time, the side wall of the cartridge 6 is provided with scale lines, making it easy for the operator to observe the amount of liquid medicine injected.

[0051] By setting up a feeding component, it is easier for operators to perform drug suction and administration operations.

[0052] Example 5:

[0053] This embodiment provides a drug delivery device for cancer patients. In addition to the technical solutions of the above embodiments, it also has the following technical features: a spring 13 is provided directly above the piston 12 and is sleeved with the push rod 14. The two ends of the spring 13 are fixed to the upper surface of the piston 12 and the inner wall of the cartridge 6, respectively.

[0054] When the piston 12 moves upward, the spring 13 is compressed and generates a downward reaction force, which saves some of the pushing force when injecting the patient, making the device easier for the patient to use. At the same time, after the injection is completed, the spring 13 is stretched, making it easier for the spring 13 to return to its original position. The operator can pull the piston 12 upward with a little force. It is worth noting that the piston 12 is in close contact with the inner wall of the cartridge 6. When it is not subjected to a large pulling or pushing force, the piston 12 cannot slide freely in the inner cavity of the cartridge 6.

[0055] By incorporating spring 13, the operator's manpower is saved during drug inhalation and administration, thus improving the practicality of the device.

[0056] Example 6:

[0057] This embodiment provides a drug delivery device for cancer patients. In addition to the technical solutions of the above embodiments, it also has the following technical features: the outer wall of the push plate 16 is provided with anti-slip texture.

[0058] The anti-slip texture prevents slippage when the operator pushes the push plate 16, thus providing some protection for the patient.

[0059] Example 7:

[0060] This embodiment provides a drug delivery device for cancer patients, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including a driving component comprising:

[0061] C-shaped column 18 is located around the cartridge 6 and is fixed to the inner bottom surface of the protective box 1. A lead screw 19 is rotatably installed inside the C-shaped column 18. A threaded block 20 that slides with the C-shaped column 18 is threadedly connected to the lead screw 19. A clamp 17 is fixedly fitted to the outer wall of the cartridge 6. The threaded block 20 is fixed to the clamp 17. A power supply 21 is fixedly installed on the upper surface of the support plate 5. A control panel 22 and a motor 23 are located around the power supply 21. The power supply 21, control panel 22 and motor 23 are electrically connected. The output shaft of the motor 23 passes through the support plate 5 and is coaxially connected to the lead screw 19.

[0062] When the drive component is working, the motor 23 is started, and the output shaft of the motor 23 rotates, driving the lead screw 19 to rotate. Under the action of the thread force, the threaded block 20 can move up or down in the inner cavity of the C-shaped column 18. The threaded block 20 drives the cartridge 6 to move up and down through the clamp 17. In order to further improve the stability of the cartridge 6 when it moves in the inner cavity of the protective box 1, a slider is fixedly installed on the other side of the clamp 17 away from the threaded block 20, and a guide rail fixed to the protective box 1 is provided on the periphery of the slider. The slider slides with the guide rail, and a sliding rod is provided in the guide rail. The sliding rod slides with the slider, further improving the stability of the cartridge 6 when it moves up and down. In addition, a charging port is provided on the control panel 22 to facilitate charging of the power supply 21 in this device. Multiple evenly distributed heat dissipation holes are opened on the side wall of the liquid tank 2 near the motor 23.

[0063] By setting up a drive component, the cartridge 6 can be easily moved up and down inside the protective box 1.

[0064] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A drug delivery device for use with a patient having a neoplasm, characterized by, include: A protective box (1) is provided with a medicine tank (2) threaded on the top of the protective box (1). A partition plate is provided in the middle and lower part of the medicine tank (2). The partition plate divides the inner cavity of the medicine tank (2) into an upper storage chamber and a lower drive chamber. A top cover (3) is inserted into the top opening of the medicine tank (2). A support plate (5) is fixedly installed at the bottom opening of the medicine tank (2). A medicine cartridge (6) is provided in the middle of the inner cavity of the protective box (1). A delivery pipe (7) is fixedly installed at the bottom of the medicine storage chamber of the medicine tank (2). A medical-grade one-way valve (8) is fixedly installed at the other end of the delivery pipe (7). An infusion pipe (9) is fixedly installed at the other end of the medical-grade one-way valve (8). The other end of the infusion pipe (9) is connected to the bottom of the medicine cartridge (6). A piston (12) is slidably installed inside the medicine cartridge (6). A pusher assembly is disposed on the periphery of the cartridge (6) and is used to control the injection and suction of the drug liquid inside the cartridge (6); A drive assembly is disposed on the periphery of the cartridge (6) and is used to control the up-and-down displacement of the cartridge (6) within the cavity of the protective box (1).

2. A device for administering a dose to a patient suffering from cancer according to claim 1, characterized in that The top cover (3) is fitted with multiple evenly distributed sealing rings (4) on the circumferential side wall inside the liquid tank (2).

3. The device of claim 1, wherein, The bottom of the cartridge (6) is fixed with a needle tube (10), and the needle tube (10) and the cartridge (6) are integrally formed. A needle (11) is inserted into the bottom end of the needle tube (10), and the bottom of the protective box (1) is provided with a through hole that can accommodate the needle (11) to pass through.

4. The device of claim 1, wherein, The feeding assembly includes: A limiting plate (15) is fixedly installed on the inner wall of the protective box (1). The side wall of the protective box (1) has an opening that matches the groove of the limiting plate (15). A push plate (16) is slidably installed inside the limiting plate (15). A push rod (14) in the shape of an inverted L is fixedly installed on the back of the push plate (16). The other end of the push rod (14) passes through the upper surface of the cartridge (6) and is fixed to the piston (12).

5. A device for administering a dose to a patient suffering from cancer according to claim 4, wherein A spring (13) is provided directly above the piston (12) and is fitted with the push rod (14). The two ends of the spring (13) are fixed to the upper surface of the piston (12) and the inner wall of the cartridge (6), respectively.

6. A device for administering a dose to a patient suffering from cancer according to claim 5, wherein The outer wall of the push plate (16) is provided with anti-slip texture.

7. The device of claim 1, wherein, The driving component includes: C-shaped column (18) is set on the periphery of the cartridge (6) and fixed to the inner bottom surface of the protective box (1). A lead screw (19) is rotatably installed inside the C-shaped column (18). A threaded block (20) that slides with the C-shaped column (18) is threaded on the lead screw (19). A clamp (17) is sleeved and fixed on the outer wall of the cartridge (6). The threaded block (20) is fixed to the clamp (17). A power supply (21) is fixedly installed on the upper surface of the support plate (5). A control panel (22) and a motor (23) are set on the periphery of the power supply (21). The power supply (21), control panel (22) and motor (23) are electrically connected. The output shaft of the motor (23) passes through the support plate (5) and is coaxially connected to the lead screw (19).

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