Rectum and colon administration device

Abstract

The invention belongs to the technical field of medical instruments, and discloses a rectal and colon administration device which comprises a liquid storage tank and a fixing device, the liquid storage tank is connected with a peristaltic pump, the peristaltic pump is connected with a medicine delivery pipe, the free end of the medicine delivery pipe is fixedly connected with a sleeve, the sleeve is rotatably connected with an administration pipe, and the administration pipe is provided with a spray hole; the administration tube is sleeved with an air bag; the fixing device comprises a supporting plate, the supporting plate is provided with a first clamping plate and a second clamping plate, and the second clamping plate is slidably connected with the supporting plate; the supporting plate is slidably connected with a limiting block which is located between the first clamping plate and the second clamping plate. The supporting plate is provided with a driving device used for driving the second clamping plate and the limiting block to slide. By means of mutual cooperation of the administration tube and the sleeve, 360-degree uniform administration in the intestinal tract is achieved, medicine is fully absorbed, and the treatment effect is improved; the first clamping plate, the second clamping plate, the limiting block and the spring are matched with one another, so that the medicine conveying pipe is fixed under the condition that the conductivity is not affected, and the labor intensity of medical staff is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a rectal and colon drug delivery device. Background Art

[0002] The colon, located in the right iliac fossa, continues with the cecum and connects to the rectum at the level of the third sacral vertebra. Rectal-colonic drug delivery involves delivering drugs into the intestine through the anus. Rapid absorption through the rectal mucosa allows the drug to enter the general circulation, exerting its efficacy to treat systemic or localized conditions. This approach is suitable for conditions where oral administration is unsuitable or where rapid absorption is required. This approach avoids the first-pass effect, where drugs are metabolized by the liver before entering the systemic circulation, thereby improving drug bioavailability. Furthermore, the colon has fewer metabolic enzymes, so administering drugs there can reduce the destructive effects of gastrointestinal digestive enzymes on drugs, facilitating drug absorption and enhancing therapeutic efficacy.

[0003] Currently, rectal drug delivery devices are commonly used to inject liquid medications directly into the rectum or colon from the anus, both for therapeutic purposes and as a method for intestinal cleansing. However, existing rectal drug delivery devices cannot precisely control the delivery rate during administration; the drug may be concentrated in a localized area, preventing it from fully contacting the intestinal mucosa, resulting in inadequate drug absorption and reduced therapeutic efficacy. Furthermore, existing rectal drug delivery devices are often difficult to secure, causing the tube to slip out of the anus, requiring the administrator to manually secure it. Summary of the Invention

[0004] The present invention provides a rectal drug delivery device that utilizes a drug delivery tube, a cannula, and a peristaltic pump to achieve 360-degree uniform drug delivery within the intestine, ensuring full drug absorption and enhancing therapeutic efficacy. The device also utilizes a first clamp, a second clamp, a stopper, and a spring to secure the drug delivery tube without compromising conductivity, reducing the workload of medical personnel. This device addresses the problems described in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A rectal medication administration device comprises a liquid storage tank and a fixing device, wherein the liquid storage tank is connected to a peristaltic pump, which is connected to a medication tube, the free end of the medication tube being fastened to a sleeve, the free end of the sleeve being sealingly and rotatably connected to the medication tube, the medication tube being provided with a plurality of spray holes along its circumference; an air bag is provided on the outer sleeve of the medication tube, and the air bag is connected to the air pump via an air tube; the fixing device is detachably connected to a bed, the fixing device comprising a support plate, the support plate being provided with a groove for accommodating the medication tube; a first clamping plate and a second clamping plate are respectively provided on either side of the groove, the first clamping plate being fastened to the support plate, and the second clamping plate being slidably connected to the support plate; the support plate being slidably connected to a limit block, the limit block being located between the first clamping plate and the second clamping plate, the width of the limit block being smaller than the outer diameter of the medication tube, and the sliding direction of the limit block being perpendicular to the sliding direction of the second clamping plate; and the support plate being provided with a driving device for driving the second clamping plate and the limit block to slide.

[0006] Furthermore, the driving device includes a first gear and a second gear rotatably connected to the support plate via a rotating shaft, and the first gear is engaged with the second gear; the first gear is coaxially fastened to a first rocker arm, the free end of the first rocker arm is rotatably connected to a first connecting rod, and the first connecting rod is rotatably connected to the first splint; the second gear is coaxially fastened to a second rocker arm, the free end of the second rocker arm is rotatably connected to a second connecting rod, and the second connecting rod is rotatably connected to the limit block; the support plate is provided with a limiting component that limits the rotation of the first gear.

[0007] Furthermore, one end of the limit block is connected to a first spring, the other end of the limit block is arranged in an arc shape, and the free end of the first spring is connected to the support plate; the second splint is connected to a second spring, the free end of the second spring is connected to a push plate, and the push plate is slidingly connected to the support plate; and the second connecting rod includes a first connecting part and a second connecting part, and the first connecting part and the second connecting part are detachably connected through a connecting piece.

[0008] Furthermore, the limiting assembly includes a fixing plate fastened to the supporting plate, the fixing plate and the rotating shaft of the first gear are both provided with threaded holes, and the rotating shaft of the first gear is connected to the fixing plate by fastening screws.

[0009] Furthermore, the support plate is connected to a clamping assembly through a screw assembly, and the clamping assembly is detachably connected to the hospital bed; the screw assembly includes an internally threaded sleeve, one end of the internally threaded sleeve is threadedly connected to a first externally threaded rod, and the other end of the internally threaded sleeve is threadedly connected to a second externally threaded rod, the first externally threaded rod is connected to the support plate, and the second externally threaded rod is connected to the clamping assembly, and the thread rotation directions of the two first externally threaded rods and the second externally threaded rods are opposite.

[0010] Furthermore, the clamping assembly includes a U-shaped frame, the side wall of the U-shaped frame is threadedly connected to a clamping bolt, and the free end of the clamping bolt is connected to a clamping plate.

[0011] Furthermore, the first externally threaded rod is rotatably connected to the support plate via a universal ball or a rotating shaft pin.

[0012] Furthermore, the drug delivery tube is provided with three spray holes evenly spaced along the circumference, and the spray holes are strip-shaped spray holes opened along the axial direction of the drug delivery tube.

[0013] Furthermore, a scale line is provided on one end of the drug delivery tube close to the drug administration tube, and the liquid storage tank is provided with a thermostat.

[0014] Furthermore, the end of the dosing tube is hemispherical, and the dosing tube is provided with a pressure sensor, which is connected to a display module; and a check valve is provided at the outlet of the liquid storage tank, which controls the unidirectional flow of the liquid medicine from the liquid storage tank to one side of the dosing tube.

[0015] The principle and beneficial effects of the technical solution are: 1. The present invention provides a rectal and colon drug delivery device, wherein a liquid storage tank is used to store a prepared drug solution, and a peristaltic pump is used to guide the drug solution in the liquid storage tank to a drug delivery tube and inject it into the human body. By adjusting the peristaltic pump, the speed and flow rate of drug delivery can be controlled to avoid excessive speed or excessive slowness causing pain to the patient; the peristaltic pump is connected to the drug delivery tube, the free end of which is tightly connected to a cannula, and the free end of the cannula is sealed and rotatably connected to a drug delivery tube, and the drug delivery tube is provided with a plurality of spray holes along the circumference. The peristaltic pump draws the drug solution through the drug delivery tube into the cannula, and the drug solution in the cannula enters the drug delivery tube and is sprayed out from a plurality of through holes on the side wall of the main tube. When the medicine liquid is sprayed out, a reaction force is applied to the drug delivery tube, driving the drug delivery tube to rotate while spraying the medicine liquid, forming a 360-degree coverage range, ensuring that the medicine can be evenly distributed in the entire intestinal cavity, and the medicine liquids will collide with each other during the rotation and spraying, further colliding and refining the medicine liquid, increasing the absorption effect of the intestine, thereby improving the treatment effect; an air bag is arranged on the outer cover of the drug delivery tube, and the air bag is connected to an air pump through the trachea. The setting of the air bag can expand the intestine and increase the rotation space of the drug delivery tube; the fixing device is detachably connected to the bed and is used to fix the drug delivery tube, which reduces the burden on the staff without affecting the conductivity of the drug delivery tube. Specifically, the fixing device includes a support plate, which is provided with a groove for placing the drug delivery tube. After the drug delivery tube is extended into the designated position, the drug delivery tube is placed in the groove; a first splint and a second splint are respectively provided on both sides of the groove, the first splint is tightly connected to the support plate, and the second splint is slidably connected to the support plate, and the drug delivery tube is fixed by sliding the second support plate; the support plate is slidably connected to a limiting block, and the limiting block is located between the first splint and the second splint, the width of the limiting block is smaller than the outer diameter of the drug delivery tube, and the sliding direction of the limiting block is perpendicular to the sliding direction of the second splint, which can not only effectively fix the drug delivery tube, but also avoid excessive clamping force. , affecting the conductivity of the drug delivery tube; the driving device drives the second splint to slide to the right in the horizontal direction, and drives the limit block to slide upward in the vertical direction, so that the right side wall of the limit block is tightly attached to the left side wall of the first splint, and the limit block slides between the first splint and the second splint, and the second splint and the first splint clamp the drug delivery tube, and due to the limitation of the limit block, the clamping force is prevented from being too large, which affects the conductivity of the drug delivery tube, and the limit block can also play a role in supporting the drug delivery tube, increasing the clamping force without affecting the conductivity of the drug delivery tube; in addition, the fulcrum of the fixing device is located on the bed and does not contact the human body, reducing the patient's pain.

[0016] The cam is connected to the support plate of the second gear and the second gear is connected to the support plate of the second gear by the spring, and the cam is connected to the support plate of the second gear by the spring. When the second connecting rod is fixed, the first connecting part is restricted by the limiting assembly; since the second connecting rod is divided into a detachable first connecting part and a second connecting part, if the pressure in the intestine is too large or the drug administration can no longer be continued, the connecting part is removed, the first connecting part and the second connecting part are disassembled, and the limiting block slides downward under the action of the rebound force of the first spring to disengage from the first splint and the second splint. At this time, the second splint slides to the right under the action of the rebound force of the second spring to clamp the drug administration tube, avoiding secondary damage to the patient caused by continued drug administration, saving liquid medicine, and preventing the liquid medicine in the intestine from flowing back into the drug administration tube; the end of the limiting block is set to an arc shape, which can reduce the contact area between the limiting block and the first splint and the second splint, thereby reducing sliding resistance; wherein, in order to reduce sliding resistance, the contact position of the limiting block with the first splint and the second splint is provided with a smooth coating.

[0017] 3. A rectal colon medication device provided by the present invention, the rotating shaft of the first gear is connected to the fixing plate by a fastening screw, which is easy to operate and the rotation of the rotating shaft of the first gear is limited by the thread, and the fixing effect is good; the support plate is connected to the clamping assembly by a screw assembly, and the clamping assembly is detachably connected to the hospital bed, the clamping assembly includes a U-shaped frame, the side wall of the U-shaped frame is threadedly connected with a tightening bolt, and the free end of the tightening bolt is connected to the tightening plate, so that the device can be installed on different beds and has a wide applicability; the screw assembly includes an internal threaded sleeve, a first external threaded rod and a second external threaded rod, the first external threaded rod is connected to the support plate, and the second external threaded rod is connected to the clamping assembly, and the thread rotation direction of the two first external threaded rods and the second external threaded rods is opposite, and the distance between the fixing assembly and the patient's anus can be adjusted by the screw assembly while also adjusting the direction, thereby increasing the convenience of operation and reducing the burden on medical staff; the first external threaded rod and the support plate are rotatably connected by a universal ball, and the support plate can be adjusted within a range of 360°, further increasing the convenience of operation.

[0018] 4. The present invention provides a rectal drug delivery device. The delivery tube is provided with three nozzles evenly spaced along the circumference. The nozzles are strip-shaped nozzles extending along the axial direction of the delivery tube. The liquid sprayed from the strip nozzles covers a wide area, ensuring uniform distribution of the liquid within the intestine, preventing only localized delivery of the drug, and further enhancing the therapeutic effect. The delivery tube is provided with a scale mark. During insertion, the scale mark is observed to determine the length of the delivery tube inserted into the patient's anus. Medical personnel primarily determine the length of the delivery tube in the patient's body based on the patient's condition. The liquid storage tank is provided with a thermostat to maintain the temperature of the liquid, preventing the liquid from being too cold and causing pain to the patient. The end of the delivery tube is hemispherical, reducing resistance during insertion. The delivery tube is also provided with a pressure sensor connected to a display module, which can monitor the pressure in the intestine in real time to adjust the flow rate of the liquid or promptly stop the liquid from entering the liquid storage tank. A check valve is provided at the outlet of the liquid storage tank to prevent the liquid from flowing back into the liquid storage tank and contaminating the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a rectal and colonic drug delivery device according to the present invention; Figure 2 for Figure 1 A magnified schematic diagram of point B in the middle; Figure 3 It is a side view of a rectal and colon drug delivery device of the present invention; Figure 4 for Figure 3 Partial cross-sectional view of AA; Figure 5 This is a schematic diagram of a first structural embodiment of a fixing device for a rectal and colonic drug delivery device according to the present invention; Figure 6 This is a schematic diagram of the second structure of a fixing device of a rectal and colonic drug delivery device of the present invention.

[0020] The names of the corresponding symbols in the accompanying drawings are: 1. Liquid storage tank; 2. Thermostat; 3. Peristaltic pump; 4. Drug delivery tube; 5. Cannula; 6. Drug delivery tube; 7. Nozzle; 8. Sensor; 9. Airbag; 10. Trachea; 11. Air pump; 12. Scale line; 13. Support plate; 14. First clamping plate; 15. Second clamping plate; 16. Push plate; 17. Second spring; 18. Stop block; 19. First gear; 20. Second gear; 21. Rotating shaft; 22. Fixed plate; 2 3. Fastening screw; 24. First rocker; 25. First connecting rod; 26. Second rocker; 27. Second connecting rod; 27a. First connecting part; 27b. Second connecting part; 28. Connecting piece; 29. First spring; 30. Slide groove; 31. Slide rail; 32. First externally threaded rod; 33. Internally threaded sleeve; 34. Second externally threaded rod; 35. U-shaped frame; 36. Tightening bolt; 37. Tightening plate; 38. Universal ball. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: like Figures 1 to 6 As shown, a rectal colon drug delivery device includes a liquid storage tank 1 and a fixing device, the liquid storage tank 1 is provided with a thermostat 2, the liquid storage tank 1 is connected to a peristaltic pump 3, the peristaltic pump 3 is connected to a drug delivery tube 4, the free end of the drug delivery tube 4 is fastened to a sleeve 5, the free end of the sleeve 5 is rotatably connected to a drug delivery tube 6 through a bearing seal, the drug delivery tube 6 is provided with three spray holes 7 evenly spaced along the circumference, the spray holes 7 are strip-shaped spray holes 7 opened along the axial direction of the drug delivery tube 6; the end of the drug delivery tube 6 is hemispherical, and the drug delivery tube 6 is provided with a pressure sensor 8, and the pressure sensor 8 is connected to a display module; and a check valve is provided at the outlet of the liquid storage tank 1, the check valve controls the unidirectional flow of the drug solution from the liquid storage tank 1 to one side of the drug delivery tube 6; an air bag 9 is provided on the outer sleeve of the drug delivery tube 6, and the air bag 9 is connected to an air pump 11 through an trachea 10; a scale line 12 is provided on the end of the drug delivery tube 4 close to the drug delivery tube 6.

[0022] The fixing device includes a support plate 13, which is provided with a groove for placing the drug delivery tube 4; a first splint 14 and a second splint 15 are respectively provided on both sides of the groove, the first splint 14 is fastened to the support plate 13, the second splint 15 is slidably connected to the support plate 13, the second splint 15 is connected to a second spring 17, the free end of the second spring 17 is connected to a push plate 16, the push plate 16 is slidably connected to the support plate 13; and the support plate 13 is slidably connected to a limit block 18, which is located between the first splint 14 and the second splint 1 5, the width of the limit block 18 is smaller than the outer diameter of the drug delivery tube 4; and the sliding direction of the limit block 18 is perpendicular to the sliding direction of the second clamping plate 15; one end of the limit block 18 is connected to the first spring 29, the other end of the limit block 18 is configured to be arc-shaped, and the free end of the first spring 29 is connected to the support plate 13; and the second connecting rod 27 includes a first connecting portion 27a and a second connecting portion 27b, the first connecting portion 27a and the second connecting portion 27b are detachably connected by a connecting member 28, and the connecting member 28 is a plug-in pin or screw. Specifically, the support plate 13 is provided with a slide groove 30 along the horizontal and vertical directions respectively, and a slide rail 31 is connected to the bottom of the second clamping plate 15 and the push plate 16, and the slide rail 31 is slidably connected to the horizontal slide groove 30; the bottom of the limit block 18 is also connected to the slide rail 31, and the slide rail 31 is slidably connected to the vertical slide groove 30.

[0023] The support plate 13 is provided with a driving device for driving the second splint 15 and the limit block 18 to slide, the driving device includes a first gear 19 and a second gear 20 rotatably connected to the support plate 13 through a rotating shaft 21, and the first gear 19 meshes with the second gear 20; the first gear 19 is coaxially fastened to a first rocking arm 24, and the free end of the first rocking arm 24 is rotatably connected to a first connecting rod 25 through a rotating shaft pin, and the first connecting rod 25 is rotatably connected to the first splint 14 through a rotating shaft pin; the second gear 20 is coaxially fastened to a second rocking arm 26, and the free end of the second rocking arm 26 is rotatably connected to a second connecting rod 27 through a rotating shaft pin, and the second connecting rod 27 is rotatably connected to the limit block 18 through a rotating shaft pin; the support plate 13 is provided with a limiting assembly that limits the rotation of the first gear 19, and the limiting assembly includes a fixing plate 22 fastened to the support plate 13, and the fixing plate 22 and the rotating shaft 21 of the first gear 19 are both provided with threaded holes, and the rotating shaft 21 of the first gear 19 is connected to the fixing plate 22 by a fastening screw 23.

[0024] The fixture is removably connected to the bed via a clamping assembly. The clamping assembly includes a U-shaped frame 35, the sidewall of which is threadedly connected to a clamping bolt 36, the free end of which is connected to a clamping plate 37. The screw assembly includes an internally threaded sleeve 33, one end of which is threadedly connected to a first externally threaded rod 32, and the other end of which is threadedly connected to a second externally threaded rod 34. The first externally threaded rod 32 is rotatably connected to the support plate 13 via a universal ball joint 38 or a rotating pin. The second externally threaded rod 34 is connected to the U-shaped frame 35, and the threads of the first externally threaded rod 32 and the second externally threaded rod 34 are threaded in opposite directions.

[0025] The specific implementation process is as follows: When using the device, first clamp the U-shaped frame 35 on the bed and fix it with the tightening bolt 36, adjust the first externally threaded rod 32, the second externally threaded rod 34 and the internally threaded sleeve 33, and adjust the support plate 13 to the appropriate position; then insert the hemispherical part of the drug delivery tube 6 from the patient's anus. When inserting, it is necessary to pay attention to observe the scale line 12 to judge the length of the tube inserted into the patient's anus. When the tube reaches the correct position, use the air pump 11 to inflate the air bag 9 to open the surrounding intestines, turn on the peristaltic pump 3, and let the liquid in the liquid storage tank 1 flow into the drug delivery tube 6 through the drug delivery tube 4. The drug delivery tube 6 rotates while spraying the liquid from the spray hole 7 on the inner wall of the intestine to achieve 360° uniform coverage. Rotate the direction of the support plate 13 to make it easier to fix the drug delivery tube 4, rotate the shaft 21 of the first gear 19 clockwise, and the first rocker 24 and the first connecting rod 25 drive the push plate 16, the second clamping plate 15 and the second spring 17 The second gear 20 is driven by the second rocker 26 and the second connecting rod 27 to drive the limit block 18 to slide upward and stretch the first spring 29. After the limit block 18 is stuck between the first clamping plate 14 and the second clamping plate 15, it continues to rotate the rotating shaft 21 of the first gear 19, and the push plate 16 moves right to compress the second spring 17. The limit block 18 continues to slide upward to support the medicine delivery tube 4. After the fixation is completed, the fixing screw 23 is tightened to fix the rotating shaft 21 of the first gear 19; when the sensor 8 detects that the pressure in the intestine is too high or the medicine liquid is seen to flow out, the connecting piece 28 is removed, the first connecting part 27a and the second connecting part 27b are separated, and under the action of the rebound force of the first spring 29, the limit block 18 slides downward and out from between the first clamping plate 14 and the second clamping plate 15. Under the action of the rebound force of the second spring 17, the second clamping plate 15 slides to the right to clamp the medicine delivery tube 4.

[0026] Among them, the present invention provides a rectal colon drug delivery device, wherein the liquid storage tank 1 is used to store the configured drug solution, and the peristaltic pump 3 is used to guide the drug solution in the liquid storage tank 1 to the drug delivery tube 4 and inject it into the human body. By adjusting the peristaltic pump 3, the speed and flow of the drug delivery can be controlled to avoid too fast or too slow speed causing pain to the patient; the peristaltic pump 3 draws the drug solution through the drug delivery tube 4 to the sleeve 5, and the drug solution in the sleeve 5 enters the drug delivery tube 4 and is sprayed out from several through holes on the side wall of the main tube. When the drug solution is sprayed, a reaction force is applied to the drug delivery tube 6, driving the drug delivery tube 6 to rotate while spraying the drug solution, forming a 360-degree coverage range, ensuring that the drug can be evenly distributed in the entire intestinal cavity, and the drug solution will collide with each other during the rotation and spraying, further colliding and refining the drug solution, increasing the intestinal absorption effect, thereby improving the treatment effect; the setting of the airbag 9 can expand the intestine and increase the rotation space of the drug delivery tube 6. The fixing device is used to fix the drug delivery tube 4, which reduces the burden on the staff without affecting the conductivity of the drug delivery tube 4. It can not only effectively fix the drug delivery tube 4, but also avoid excessive clamping force that affects the conductivity of the drug delivery tube 4; and the limit block 18 can also play a role in supporting the drug delivery tube 4, increasing the clamping force without affecting the conductivity of the drug delivery tube 4; in addition, the fulcrum of the fixing device is located on the bed and does not contact the human body, reducing the patient's pain.

[0027] In addition, the drug delivery tube 6 is provided with three nozzle holes 7 evenly spaced along the circumference. The nozzle holes 7 are strip-shaped nozzle holes 7 opened along the axial direction of the drug delivery tube 6. The liquid sprayed by the strip-shaped nozzle holes 7 covers a wide area, so that the liquid is evenly distributed in the intestine, avoiding that only a local area is exposed to the drug, further enhancing the therapeutic effect. The drug delivery tube 6 is provided with a scale line 12. During insertion, the scale is observed to determine the length of the drug delivery tube 4 inserted into the patient's anus. Medical personnel mainly determine the length of the drug delivery tube 4 in the patient's body based on the patient's condition. The liquid storage tank 1 is provided with a thermostat 2 to maintain the temperature of the liquid delivery to prevent the liquid delivery from being too cold and causing pain to the patient. The end of the drug delivery tube 6 is hemispherical to reduce resistance during insertion. The drug delivery tube 6 is also provided with a pressure sensor 8. The pressure sensor 8 is connected to a display module and can monitor the pressure in the intestine in real time to adjust the flow rate of the liquid delivery or to stop the liquid delivery to the liquid storage tank 1 in time. A check valve is provided at the outlet of the liquid storage tank 1 to prevent the liquid delivery from flowing back into the liquid storage tank 1 and contaminating the liquid delivery.

[0028] Since the second connecting rod 27 is divided into a detachable first connecting part 27a and a second connecting part 27b, if the pressure in the intestine is too high or the drug administration can no longer be continued, the connecting piece 28 is removed, the first connecting part 27a and the second connecting part 27b are disassembled, and the limit block 18 slides downward under the rebound force of the first spring 29 to disengage from the first splint 14 and the second splint 15. At this time, the second splint 15 slides to the right under the rebound force of the second spring 17 to clamp the drug delivery tube 4, avoiding secondary damage to the patient caused by continued drug administration, saving medicine, and preventing the medicine in the intestine from flowing back into the drug delivery tube 4; the end of the limit block 18 is set to an arc shape, which can reduce the contact area between the limit block 18 and the first splint 14 and the second splint 15, thereby reducing sliding resistance; wherein, in order to reduce sliding resistance, the contact position of the limit block 18 with the first splint 14 and the second splint 15 is provided with a smooth coating.

[0029] The rotating shaft 21 of the first gear 19 is connected to the fixing plate 22 by a fastening screw 23, which is easy to operate and limits the rotation of the rotating shaft 21 of the first gear 19 by the thread, and the fixing effect is good; the support plate 13 is connected to the clamping assembly through a screw assembly, and the clamping assembly is detachably connected to the bed, and the clamping assembly includes a U-shaped frame 35, and the side wall of the U-shaped frame 35 is threadedly connected with a tightening bolt 36, and the free end of the tightening bolt 36 is connected to a tightening plate 37, which can be installed on different beds and has a wide applicability; the screw assembly includes an internal threaded sleeve 33, a first external threaded rod 32 and a second external threaded rod 34. The screw assembly can adjust the distance between the fixing assembly and the patient's anus while also adjusting the direction, thereby increasing the convenience of operation and reducing the burden on medical staff; the first external threaded rod 32 is rotatably connected to the support plate 13 by a universal ball 38, and the support plate 13 can be adjusted within a 360° range, further increasing the convenience of operation.

[0030] The above is only an embodiment of the present invention, and common knowledge such as the specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A rectal drug delivery device, characterized in that: The pump is connected to the pump end face and the pump end face has a check valve in its valve body, and the check valve is connected to the pump end face, and the pump end has a check valve in its valve body, and the check valve is connected to the pump end face.

2. A rectal and colon drug delivery device according to claim 1, characterized in that: The driving device includes a first gear and a second gear rotatably connected to the support plate via a rotating shaft, and the first gear is engaged with the second gear; the first gear is coaxially fastened to a first rocker arm, the free end of the first rocker arm is rotatably connected to a first connecting rod, and the first connecting rod is rotatably connected to the first splint; the second gear is coaxially fastened to a second rocker arm, the free end of the second rocker arm is rotatably connected to a second connecting rod, and the second connecting rod is rotatably connected to the limit block; the support plate is provided with a limiting component that limits the rotation of the first gear.

3. A rectal drug delivery device according to claim 2, characterized in that: One end of the limit block is connected to a first spring, the other end of the limit block is arranged in an arc shape, and the free end of the first spring is connected to the support plate; the second clamping plate is connected to a second spring, the free end of the second spring is connected to a push plate, and the push plate is slidably connected to the support plate; and the second connecting rod includes a first connecting part and a second connecting part, and the first connecting part and the second connecting part are detachably connected through a connecting piece.

4. The rectal drug delivery device according to claim 2, characterized in that: The limiting assembly includes a fixing plate fastened to the supporting plate, the fixing plate and the rotating shaft of the first gear are both provided with threaded holes, and the rotating shaft of the first gear is connected to the fixing plate via fastening screws.

5. The rectal drug delivery device according to claim 1, characterized in that: The support plate is connected to a clamping assembly through a screw assembly, and the clamping assembly is detachably connected to the hospital bed; the screw assembly includes an internally threaded sleeve, one end of the internally threaded sleeve is threadedly connected to a first externally threaded rod, and the other end of the internally threaded sleeve is threadedly connected to a second externally threaded rod, the first externally threaded rod is connected to the support plate, and the second externally threaded rod is connected to the clamping assembly, and the thread rotation directions of the two first externally threaded rods and the second externally threaded rods are opposite.

6. The rectal drug delivery device according to claim 5, characterized in that: The clamping assembly includes a U-shaped frame, a side wall of the U-shaped frame is threadedly connected to a tightening bolt, and a free end of the tightening bolt is connected to a tightening plate.

7. The rectal drug delivery device according to claim 5, characterized in that: The first externally threaded rod is rotatably connected to the support plate via a universal ball or a rotating shaft pin.

8. The rectal drug delivery device according to claim 1, characterized in that: The dosing tube is provided with three spray holes evenly spaced along the circumference, and the spray holes are strip-shaped spray holes opened along the axial direction of the dosing tube.

9. The rectal drug delivery device according to claim 1, characterized in that: The drug delivery tube is provided with a scale line at one end close to the drug administration tube, and the liquid storage tank is provided with a thermostat.

10. The rectal drug delivery device according to claim 1, characterized in that: The end of the drug delivery tube is hemispherical, and the drug delivery tube is provided with a pressure sensor, and the pressure sensor is connected to a display module; and a check valve is provided at the outlet of the liquid storage tank, and the check valve controls the unidirectional flow of the drug solution from the liquid storage tank to one side of the drug delivery tube.

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