Point-of-care drug delivery device

Abstract

The present invention provides a fixed-point drug delivery device, which belongs to the technical field of medical devices, and includes a drug delivery head assembly, a drug delivery tube assembly, a coil and a conversion joint. One end of the drug delivery head assembly is installed inside the drug delivery tube assembly, and the other end passes through the inside of the drug delivery tube assembly and extends to the outside of the drug delivery tube assembly. At the same time, the drug delivery head assembly is arranged at one end outside the drug delivery tube assembly and then connected to the conversion joint. The coil is segmented and wound on the outer wall of the drug delivery tube assembly. The drug delivery head assembly is provided with a delivery hole, and the drug delivery tube assembly is provided with a drug delivery hole, and the delivery hole corresponds to the position of the drug delivery hole. The present invention has a simple structure, can realize fixed-point drug delivery in the intestine or digestive tract, is not easy to fall off, and can perform long-term fixed-point drug delivery in vitro.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a fixed-point drug delivery device. Background Art

[0002] At present, there is no device that can deliver drugs to certain points during the treatment of some intestinal lesions such as inflammatory bowel disease and hemostatic drugs. If it can be delivered at certain points, the effect will be better. Some medical staff have tried to use instruments for treating other diseases to deliver drugs to patients with intestinal lesions. However, fecal microbiota transplant tubes are currently used for fecal microbiota injection, and all holes around the tube body will be sprayed, so it is not possible to deliver drugs at certain points. Colon pressure gauges are currently used for colon pressure measurement, and their branches are too many and too thin, resulting in high resistance to drug delivery, so it is not possible to deliver drugs at certain points in the intestine. At the same time, the colon pressure gauge tube body does not have a fixed coil, so it needs to be manually tied before insertion and then clamped with a titanium clip and sent into the intestine. The process is cumbersome, and it is easy to fall off during the process, so it cannot be well fixed. Summary of the invention

[0003] In view of this, the present invention aims to provide a fixed-point drug delivery device which has a simple structure, can achieve fixed-point drug delivery in the intestine, and is not easy to fall off.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is implemented as follows: a fixed-point drug delivery device, comprising a drug delivery head assembly, a drug delivery tube assembly, a coil and a conversion joint, wherein one end of the drug delivery head assembly is installed inside the drug delivery tube assembly, and the other end passes through the inside of the drug delivery tube assembly and extends to the outside of the drug delivery tube assembly, while the drug delivery head assembly is arranged at one end outside the drug delivery tube assembly and then connected to the conversion joint, the coil is wound in sections on the outer wall of the drug delivery tube assembly, the drug delivery head assembly is provided with a delivery hole, the drug delivery tube assembly is provided with a drug delivery hole, and the delivery hole corresponds to the position of the drug delivery hole.

[0005] Furthermore, the dosing head assembly includes a delivery head, a delivery tube, a delivery hole and a dosing head metal marker, the delivery tube is centrally installed at the right end of the delivery head, the delivery hole is arranged on the side wall of the delivery head and is a through hole, the dosing head metal marker is arranged around the delivery hole, and the dosing head metal marker is installed between the inner and outer side walls of the delivery tube.

[0006] Furthermore, scale marks are provided on the side wall of the delivery pipe.

[0007] Furthermore, the delivery head is a hollow structure with closed ends and a hollow middle, and the inner cavity of the delivery head is connected with the inner cavity of the delivery tube.

[0008] Furthermore, the drug delivery tube assembly includes a sealing plate, a main tube, a drug delivery hole, a drug delivery tube metal marker, a pipe joint, an extracorporeal tube portion, a pulley, a traction line, a traction hole and a pull ring. One end of the main tube is connected to the sealing plate, and the other end is connected to the extracorporeal tube portion. The end of the extracorporeal tube portion away from the main tube is connected to the pipe joint. A plurality of drug delivery holes are arranged on the side wall of the main tube. At the same time, the drug delivery holes are through holes, and the spacing between each two drug delivery holes is 3 cm. The drug delivery tube metal markers are respectively arranged on the side wall of the main tube and around the drug delivery holes, and the drug delivery tube metal markers are installed between the inner and outer side walls of the main tube. The pulley is installed on the sealing plate and is located inside the main tube. The traction line is wound around the pulley and then one end is connected to the drug delivery head assembly, and the other end passes through the traction hole and is connected to the pull ring arranged on the right side outside the extracorporeal tube portion. The traction hole is arranged on the inner wall of the main tube and the extracorporeal tube portion.

[0009] Furthermore, a scale mark is arranged on the side wall of the main pipe, and the metal marker of the medication tube arranged on the main pipe coincides with the integer multiple of 10 cm of the scale mark.

[0010] Furthermore, the diameter of the delivery hole is smaller than the diameter of the drug delivery hole.

[0011] Compared with the prior art, the fixed-point drug delivery device of the present invention has the following advantages:

[0012] (1) The fixed-point drug delivery device of the present invention can achieve fixed-point drug delivery in the intestine;

[0013] (2) The segmented coil of the present invention facilitates the fixation of the titanium clip to the intestine, so that the drug delivery device can be placed in the intestine for long-term in vitro intestinal fixed-point drug delivery;

[0014] (3) The fixed-point drug delivery device of the present invention is provided with a metal marker (which can be developed under X-ray) to facilitate the determination of whether the position of the drug delivery device has changed under X-ray;

[0015] (4) The fixed-point drug delivery device described in the present invention can also be used for fixed-point drug delivery during gastrointestinal treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic structural diagram of a fixed-point drug delivery device according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A;

[0019] Figure 3 This is a schematic structural diagram of a drug delivery head assembly according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a drug delivery tube assembly according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 A schematic cross-sectional view of the middle BB;

[0022] Figure 6 for Figure 4 A partial enlarged schematic diagram of part C in the middle.

[0023] Description of reference numerals:

[0024] 1. Dosing head assembly; 2. Dosing tube assembly; 3. Coil; 4. Conversion joint; 5. Delivery head; 6. Delivery tube; 7. Delivery hole; 8. Metal marker on dosing head; 9. Closing plate; 10. Main tube; 11. Dosing hole; 12. Metal marker on dosing tube; 13. Pipe joint; 14. Extracorporeal tube part; 15. Pulley; 16. Traction line; 17. Traction hole; 18. Pull ring. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0029] like Figure 1-Figure 6 As shown, the present invention is a fixed-point drug delivery device, including a drug delivery head assembly 1, a drug delivery tube assembly 2, a coil 3 and a conversion joint 4, one end of the drug delivery head assembly 1 is installed in the interior of the drug delivery tube assembly 2, and the other end passes through the interior of the drug delivery tube assembly 2 and extends to the outside of the drug delivery tube assembly 2, and at the same time, the drug delivery head assembly 1 is arranged at one end outside the drug delivery tube assembly 2 and then connected to the conversion joint 4, which is convenient for injecting drugs with a syringe, and the coil 3 is segmented and wound on the outer wall of the drug delivery tube assembly 2, which is convenient for the titanium clamp to be fixed to the intestine, ensuring that the drug delivery tube assembly 2 will not be dislocated with the peristalsis of the intestine, so that the drug delivery device can be placed in the intestine for long-term intestinal drug delivery in vitro, and the titanium clamp is an existing well-known technology and is widely used in hospitals, the drug delivery head assembly 1 is provided with a delivery hole 7, and the drug delivery tube assembly 2 is provided with a drug delivery hole 11, and the delivery hole 7 corresponds to the position of the drug delivery hole 11, ensuring that the drug can be sprayed to the part where drug delivery is required.

[0030] The dosing head assembly 1 includes a delivery head 5, a delivery tube 6, a delivery hole 7 and a dosing head metal marker 8. The delivery tube 6 is centrally installed at the right end of the delivery head 5. The delivery hole 7 is arranged on the side wall of the delivery head 5 and is a through hole. The dosing head metal marker 8 is arranged around the delivery hole 7, which is convenient for judging whether the position of the delivery hole 7 has changed under X-ray. At the same time, the dosing head metal marker 8 is installed between the inner and outer side walls of the delivery tube 6, which effectively prevents the dosing head metal marker 8 from falling off.

[0031] The side wall of the delivery tube 6 is provided with scale marks to facilitate medical personnel to judge the pulling length when pulling the delivery tube 6.

[0032] The delivery head 5 is a hollow structure with closed ends and a hollow middle. Meanwhile, the inner cavity of the delivery head 5 is connected to the inner cavity of the delivery tube 6 .

[0033] The drug delivery tube assembly 2 includes a sealing plate 9, a main tube 10, a drug delivery hole 11, a drug delivery tube metal marker 12, a pipe joint 13, an extracorporeal tube portion 14, a pulley 15, a traction line 16, a traction hole 17 and a pull ring 18. One end of the main tube 10 is connected to the sealing plate 9, and the other end is connected to the extracorporeal tube portion 14. The end of the extracorporeal tube portion 14 away from the main tube 10 is connected to the pipe joint 13. The pipe joint 13 is usually not used and is installed when needed, and then connected to the syringe. A plurality of drug delivery holes 11 are arranged on the side wall of the main tube 10. At the same time, the drug delivery holes 11 are through holes, and the spacing between each two drug delivery holes 11 is 3 cm. When the patient has multiple locations where fixed-point drug delivery is required, there are multiple drug delivery holes 11, and they correspond to different drug delivery point locations respectively. The drug delivery tube metal markers 12 are respectively arranged on the side wall of the main tube 10 and around the drug delivery holes 11, so as to facilitate the determination of the positions of the drug delivery holes 11 and the main tube 10 under X-ray. There are no changes, and the metal marker 12 of the drug delivery tube is installed between the inner and outer side walls of the main tube 10, which effectively prevents the metal marker 12 of the drug delivery tube from falling off. The pulley 15 is installed on the sealing plate 9 and is located inside the main tube 10. The traction line 16 is wound around the pulley 15 and then one end is connected to the drug delivery head assembly 1, and the other end passes through the traction hole 17 and is connected to the pull ring 18 arranged on the right side of the outside of the extracorporeal tube part 14. The pulley 15 is used in conjunction with the traction line 16 to enable the drug delivery head assembly 1 to slide smoothly left and right in the drug delivery tube assembly 2. When the patient has multiple positions that require fixed-point drug delivery, pulling the pull ring 18 can realize the advancement of the drug delivery head assembly 1 to make it reach the position where drug delivery is required. Pulling the drug delivery head assembly 1 can realize the retreat of the drug delivery head assembly 1 to make it reach the position where drug delivery is required, thereby facilitating fixed-point drug delivery. At the same time, according to actual needs, the drug delivery head assembly 1 can be safely pulled out when necessary. The traction hole 17 is provided on the inner wall of the main tube 10 and the extracorporeal tube portion 14 , and can limit the movement trajectory of the traction wire 16 .

[0034] The side wall of the main pipe 10 is provided with scale marks, and the metal marker 12 of the medication tube provided on the main pipe 10 coincides with the integer multiple of 10 cm of the scale marks, so as to facilitate the determination of the installation position of the main pipe 10 .

[0035] The diameter of the delivery hole 7 is smaller than the diameter of the drug delivery hole 11, ensuring that the drug can be delivered to the site where the drug is required.

[0036] In the actual working process, the titanium clip is first placed in the front hole of the colonoscope, and the titanium clip clamps the drug delivery device to send the drug delivery device into the intestine together with the colonoscope. When the drug delivery device reaches the specified position, the drug delivery hole 11 on the drug delivery device is aligned with the position in the intestine where the drug delivery is required, the titanium clip is opened to release the drug delivery device, and then the titanium clip is used to fix the drug delivery device locally in multiple places to make it more secure in the intestine. When the intestine needs to be administrated, the syringe is connected to the conversion joint 4 for intestinal fixed-point drug delivery. When the patient has multiple positions where fixed-point drug delivery is required, pulling the pull ring 18 can realize the advancement of the drug delivery head assembly 1 so that it reaches the position where the drug delivery is required, and pulling the delivery tube 6 can realize the retreat of the drug delivery head assembly 1 so that it reaches the position where the drug delivery is required, thereby facilitating fixed-point drug delivery; if necessary, the drug delivery head assembly 1 can be safely pulled out, one end of the pipe joint 13 is installed on the main pipe 10, and the other end is connected to the syringe for drug injection. At this time, the drug can be directly sprayed through the drug delivery hole 11 on the main pipe 10 for drug delivery.

[0037] The fixed-point drug delivery device described in the present invention is also suitable for the treatment of the digestive tract. The drug delivery device enters the patient's digestive tract or stomach through the oral cavity / nasal cavity. Similarly, the drug delivery head assembly 1 is moved forward or backward by pulling the pull ring 18 or pulling the delivery tube 6, thereby achieving fixed-point drug delivery to the patient's digestive tract or stomach. If necessary, the drug delivery head assembly 1 can be safely pulled out, one end of the pipe connector 13 is installed on the main pipe 10, and the other end is connected to the syringe for drug injection. At this time, the drug can be directly sprayed through the drug delivery hole 11 on the main pipe 10.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed-point drug delivery device, characterized in that: The invention comprises a drug delivery head assembly (1), a drug delivery tube assembly (2), a coil (3) and a conversion joint (4); one end of the drug delivery head assembly (1) is installed inside the drug delivery tube assembly (2), and the other end passes through the inside of the drug delivery tube assembly (2) and extends to the outside of the drug delivery tube assembly (2); at the same time, one end of the drug delivery head assembly (1) is arranged outside the drug delivery tube assembly (2) and then connected to the conversion joint (4); the coil (3) is wound on the outer wall of the drug delivery tube assembly (2) in sections; a delivery hole (7) is arranged on the drug delivery head assembly (1), and a drug delivery hole (11) is arranged on the drug delivery tube assembly (2); the delivery hole (7) corresponds to the position of the drug delivery hole (11); The dosing head assembly (1) comprises a delivery head (5), a delivery tube (6), a delivery hole (7) and a dosing head metal marker (8); the delivery tube (6) is centrally mounted on the right end of the delivery head (5); the delivery hole (7) is arranged on the side wall of the delivery head (5) and is a through hole; the dosing head metal marker (8) is arranged around the delivery hole (7), and the dosing head metal marker (8) is mounted between the inner and outer side walls of the delivery tube (6); The drug delivery tube assembly (2) comprises a sealing plate (9), a main tube (10), a drug delivery hole (11), a drug delivery tube metal marker (12), a tube joint (13), an extracorporeal tube portion (14), a pulley (15), a traction line (16), a traction hole (17) and a pull ring (18). One end of the main tube (10) is connected to the sealing plate (9), and the other end is connected to the extracorporeal tube portion (14). The end of the extracorporeal tube portion (14) away from the main tube (10) is connected to the tube joint (13). A plurality of drug delivery holes (11) are arranged on the side wall of the main tube (10). The drug delivery holes (11) are through holes, and the distance between each two drug delivery holes (11) is 3 cm. The metal marker (12) of the drug administration tube is respectively arranged on the side wall of the main tube (10) and around the drug administration hole (11), and the metal marker (12) of the drug administration tube is installed between the inner and outer side walls of the main tube (10). The pulley (15) is installed on the sealing plate (9) and is located inside the main tube (10). The traction line (16) is wound around the pulley (15) and then one end is connected to the drug administration head assembly (1), and the other end passes through the traction hole (17) and is connected to the pull ring (18) arranged on the right side outside the extracorporeal tube part (14). The traction hole (17) is arranged on the inner walls of the main tube (10) and the extracorporeal tube part (14).

2. The fixed-point drug delivery device according to claim 1, characterized in that: The side wall of the delivery pipe (6) is provided with scale marks.

3. The fixed-point drug delivery device according to claim 1, characterized in that: The delivery head (5) is a hollow structure with closed ends and a hollow center, and the inner cavity of the delivery head (5) is connected to the inner cavity of the delivery tube (6).

4. The fixed-point drug delivery device according to claim 1, characterized in that: The side wall of the main pipe (10) is provided with scale marks, and the metal marker (12) of the medication tube provided on the main pipe (10) coincides with the value of the scale marks which is an integer multiple of 10 cm.

5. The fixed-point drug delivery device according to claim 1, characterized in that: The diameter of the delivery hole (7) is smaller than the diameter of the drug delivery hole (11).

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