A drug delivery nozzle for a local area

Abstract

A drug delivery nozzle for a local site, comprising a drug delivery insert and a dispensing mechanism. The drug delivery insert includes a drug delivery olive shell, with a medicine squeezing water inlet at the bottom and a top opening at the top. The drug delivery insert is used to be inserted into the local site. The dispensing mechanism is arranged on the drug delivery insert and includes an elastic medicine sac and a dispensing valve orifice. The dispensing valve orifice is arranged at the top opening. The dispensing mechanism is used to squeeze the elastic medicine sac through water pressure to bulge forward through the dispensing valve orifice to push the contents forward and spray the liquid medicine to the local site. The drug delivery nozzle for the local site can be inserted into the local site without damaging the mucosal tissue, and accurately apply the medicine after pushing the contents forward.

Description

Technical Field

[0001] The invention relates to the field of intelligent toilets, and in particular to a local medication nozzle. Background Art

[0002] In addition to the most basic cleaning function, modern smart toilets also have the function of local drug administration. In cases where diseases occur inside the anus, such as hemorrhoids, constipation, uterine and vaginal erosion, etc., regular local cleaning of the anus and then anal drug administration are required.

[0003] The nozzles with therapeutic functions in the prior art include a nozzle that contains liquid medicine in the cleaning water and uses the liquid medicine for treatment while cleaning the local area. This nozzle also uses liquid medicine to clean the local surface or sprays the liquid medicine to form a coating state. It is difficult to obtain a sufficient therapeutic effect only by spraying the liquid medicine. In addition, when the liquid medicine is sprayed together with the cleaning water from the nozzle's injection port, most of the liquid medicine is scattered, resulting in a lot of waste.

[0004] For this reason, there are also disposable medication devices designed to be used on the existing spray rod. For example, Japan SHINODAKATSUO SHINODA GEN disclosed a nozzle structure for a bidet (JP2004076435A, published on March 11, 2004), in which an L-shaped insert sleeve C is installed on the front end of the existing nozzle to cover the water outlet 10. The L-shaped insert sleeve C is made of medical waste paper material, and is composed of a sleeve body C1 and an insert portion C2 connected in one piece. The peripheral wall of the insert portion C2 forms a slit C3 for retaining viscous medicine. A liquid injection hole C4 is formed at the front end. The sleeve body C1 of the insert sleeve C is made of elastic material, so it is easy to assemble on the front end of the spray nozzle 9. Since the insert portion C2 has the original shape-retaining property of the plastic as the raw material, the insert portion C2 will not fall or be crushed, and the insertion of the insertion tip C2 into the local area is smooth. In this way, when the insertion tip C2 is inserted into the user's local area, the treatment starts by sending the cleaning water from the spray nozzle 9 into the insertion tip 2. Figure 6 As shown, the cleaning water delivered from the spray nozzle 9 dissolves the viscous medicine D held in the slit C3 formed on the inner peripheral wall of the insertion tip C2, and is injected into the local interior from the multiple medicine injection holes C4 arranged at the front end of the insertion tip C2. At the same time, the medicine inside the local interior overflows to the outside of the peripheral wall of the insertion tip C2 together with the cleaning water, and the medicine held in the slit C3 on the outer peripheral surface of the insertion tip C2 is also dissolved, so that a sufficient amount of medicine is supplied to the affected part. However, its defects are also obvious. Due to the frequent movement of the anal muscles, the drug delivery position may be inaccurate, and even fingers need to be pinched below the C2 position to assist in delivering it deep into the rectum.

[0005] Therefore, there is an urgent need in the art for a local drug delivery nozzle that can effectively deliver drugs to the affected area at one time without the help of fingers, and can truly achieve local precise drug delivery to the human body without damaging mucosal tissue. This is a difficult problem that the industry urgently needs to solve when developing nozzle devices. Summary of the invention

[0006] In view of the defects existing in the above-mentioned prior art, the purpose of the present invention is to provide a local drug delivery nozzle, which can effectively deliver the medicine to the affected area at one time without the help of fingers, and can truly achieve local precise drug delivery to the human body without damaging mucosal tissue, so as to solve the technical difficulties in developing the nozzle device.

[0007] The object of the present invention is achieved in this way: a local drug delivery nozzle, comprising

[0008] A drug administration plug, the drug administration plug includes a drug administration olive shell with a rotation axis OO, the drug administration olive shell includes an upper cone shell and a lower cone shell with large cross-sections butted together, an insert body cavity is arranged inside the drug administration olive shell, a drug squeezing water inlet is arranged at the bottom of the drug administration olive shell along the direction of the rotation axis, and a top opening is arranged at the top, and the drug administration plug is used to be inserted into a local part;

[0009] The capsule discharging mechanism is arranged on the drug delivery insert, and comprises an elastic medicine capsule and a capsule discharging valve opening, and the capsule discharging valve opening is arranged at the top opening. The capsule discharging mechanism is used for squeezing the elastic medicine capsule through the capsule discharging valve opening by water pressure to push the contents forward and spray the medicine solution to the local part.

[0010] Furthermore, the elastic medicine bag includes a first soft film and a second soft film whose outer edges are clamped at the joint, a medicine containing cavity is formed between the first soft film and the second soft film, and a medicine squeezing inner cavity is formed between the second soft film and the lower conical shell, so that the medicine squeezing inner cavity is located on the side away from the top opening of the medicine containing cavity along the rotation axis OO; the bulge is formed by the medicine squeezing inner cavity squeezing the medicine containing cavity, causing the first soft film to expand directionally and bulge out through the bag valve.

[0011] Furthermore, the elastic medicine bag includes a first soft membrane and a second soft membrane, the top end of the first soft membrane is integrally connected to the bag valve opening, and the bottom end is clamped between the upper conical shell and the lower conical shell, so that a medicine containing cavity is formed between the first soft membrane and the upper conical shell, and a medicine squeezing inner cavity is formed between the second soft membrane and the lower conical shell, so that the medicine squeezing inner cavity is located on the side of the medicine containing cavity away from the top opening along the rotation axis OO; the bulge is formed by pressurizing the medicine squeezing inner cavity, causing the second soft membrane to expand, cross the medicine containing cavity, and bulge out through the bag valve opening.

[0012] Furthermore, the elastic medicine bag includes a clamping mouth and an expansion end, and the thickness of the first soft film and the second soft film gradually becomes thinner from the clamping mouth to the expansion end, so that when the elastic medicine bag is squeezed by the liquid in the medicine squeezing cavity, the first soft film and / or the second soft film expands directionally along the rotation axis OU toward the bag valve opening.

[0013] Further, the ejection sac orifice includes an orifice main body provided on the inner wall of the upper conical shell. The orifice main body is axially and integrally connected to a plurality of elastically soft petals arranged at intervals. The elastically soft petals extend forward along the rotation axis O-O from one end of the orifice main body by a certain length. The elastically soft petals include a relay conical cylinder section and a free inwardly retracted section. The relay conical cylinder section extends with the same taper as the upper conical shell, and the taper of the free inwardly retracted section is greater than that of the orifice main body to form a stepped inwardly retracted shape.

[0014] Further, the lower conical shell includes a small cross-section end wall. The small cross-section end wall is provided with a bottom buffer cavity communicating with the medicine squeezing cavity. The medicine squeezing water inlet communicates with the bottom buffer cavity, and the medicine squeezing water inlet is connected to a tap water source through a water pump.

[0015] Further, a plurality of spraying buttons are buckled on the inner wall of the expanded end of the first soft film. The spraying buttons automatically form circular openings in a part of the first soft film and are clamped at the edges of the circular openings. A liquid spraying control valve is fixedly arranged in the inner hole of the spraying button. The liquid spraying control valve can automatically spray the liquid medicine when the internal pressure of the medicine containing cavity is greater than or equal to a preset value P. 喷 when the time comes.

[0016] Further, a plurality of spraying inclined holes are arranged at intervals on the top of the upper conical shell. The spraying inclined holes communicate with the medicine containing cavity. A liquid spraying control valve is arranged in the spraying inclined holes. The liquid spraying control valve can automatically spray the liquid medicine when the internal pressure of the medicine containing cavity is greater than or equal to a preset value P. 喷 when the time comes.

[0017] Further, a cleaning mechanism is arranged at the lower part of the medicine administration insert. The cleaning mechanism includes a plurality of flushing nozzles. The flushing nozzles are annularly and evenly distributed outside the lower conical shell. Each flushing nozzle communicates with a flushing thin tube, and the flushing thin tube communicates with a C-shaped tube. One end of the C-shaped tube communicates with a switching valve and a tap water source.

[0018] A method for applying medicine with the medicine administration nozzle for a local part includes

[0019] S1 Medicine liquid filling

[0020] One end of the medicine inlet joint is arranged between the upper conical shell and the lower conical shell and communicates with the medicine containing cavity, and the other end is connected to the medicine liquid source through a medicine inlet pump. Starting the medicine inlet pump can pump the medicine liquid into the medicine containing cavity until a certain amount is reached, and then stop the medicine inlet pump;

[0021] S2 Inserting into the local part

[0022] Slowly insert the ejection sac orifice into the local part until the upper conical shell substantially enters;

[0023] S3 Bulging and pushing forward

[0024] The medicine is squeezed into the water inlet, the water in the medicine-squeezing inner cavity is pressurized, and the medicine-squeezing inner cavity squeezes the medicine-containing cavity, thereby forcing the first soft film or the second soft film to expand directionally along the rotation axis O-O towards the top opening direction and bulge out a drum from the spout of the ejection sac flap. The drum extends out of the spout of the ejection sac flap and pushes the content forward.

[0025] S4 Spray the medicine when pushing forward a predetermined length

[0026] When the length L of the protrusion of the drum from the top of the spout of the ejection sac flap reaches the preset length, the medicine-containing cavity automatically sprays out the liquid medicine; as the liquid medicine is sprayed out, the pressure in the medicine-squeezing inner cavity is maintained constant until all the liquid medicine in the medicine-containing cavity is sprayed out, and the medicine application is completed.

[0027] The medicine nozzle for the local part, compared with the prior art, is inserted into the local part without damaging the mucosal tissue, and accurately applies the medicine after pushing the content forward, with good experience and accurate medicine application. Description of the Drawings

[0028] Figure 1 It is the main cross-sectional view of Embodiment 1 of a medicine nozzle for a local part of the present invention;

[0029] Figure 2 It is the state diagram of pushing forward and spraying medicine of Embodiment 1 of a medicine nozzle for a local part of the present invention;

[0030] Figure 3 It is the state diagram of medicine application (the state at the moment when all the medicine is sprayed out) of Embodiment 1 of a medicine nozzle for a local part of the present invention;

[0031] Figure 4 It is the partial enlarged view of the closed state of the medicine spraying button of a medicine nozzle for a local part of the present invention.

[0032] Figure 5 It is the partial enlarged view of the liquid spraying state of the medicine spraying button of a medicine nozzle for a local part of the present invention.

[0033] Figure 6 It is the main cross-sectional view of Embodiment 2 of a medicine nozzle for a local part of the present invention;

[0034] Figure 7 It is of Figure 6 the partial enlarged view I (closed state) of Embodiment 2 of a medicine nozzle for a local part of the present invention;

[0035] Figure 8 It is of Figure 6 the partial enlarged view I (medicine spraying state) of Embodiment 2 of a medicine nozzle for a local part of the present invention;

[0036] Figure 9 It is the state diagram of filling water into the medicine-squeezing inner cavity of Embodiment 2 of a medicine nozzle for a local part of the present invention.

[0037] Figure 10 This is the forward spraying state diagram of Embodiment 2 of the drug delivery nozzle for a local part of the present invention.

[0038] The reference numerals in the above figures are as follows:

[0039] 10 Drug delivery insert, 11 Drug delivery olive shell, 12 Upper conical shell, 13 Lower conical shell, 14 Medicine squeezing water inlet, 15 Top opening, 16 Inner cavity of the insert, 17 Bottom buffer cavity, 18 Medicine squeezing inner cavity, 19 Spray medicine inclined hole, 12.1 Main conical part, 12.2 Top conical part, 20 Medicine discharging mechanism, 21 Elastic medicine bag, 22 Medicine discharging valve orifice, 23 Valve orifice main body, 24 Elastic soft petals, 26 Medicine accommodating cavity, 27 Bulge, 28 Medicine inlet joint, 21.1 First soft film, 21.2 Second soft film, 21.3 Clamping orifice part, 21.4 Expanding end part, 22.1 Circular medicine discharging orifice, 24.1 Relay conical barrel section, 24.2 Free inward retracting section, 200 Medicine discharging mechanism, 210 Elastic medicine bag, 211 First soft film, 212 Second soft film, 260 Medicine accommodating cavity, 270 Bulge, 30 Cleaning mechanism, 31 Flushing nozzle, 32 C-shaped pipe, 40 Spray medicine button, 41 Button barrel cap, 42 Buckling outer sleeve, 43 Pressure film cover, 44 Spray medicine through hole, 45 Ring opening knife, 46 Buckling groove, 50 Liquid spraying control valve, 51 Inner hole insert sleeve, 52 Support frame plate, 53 Liquid sealing valve cap, 54 Spring, 55 Guide sliding cylinder, 56 Overnight hole, 57 Liquid sealing cap body, 58 Guide sliding rod. Detailed implementation manners

[0040] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings, but is not used to limit the scope of the present invention. Embodiment

[0041] A drug delivery nozzle for a local part, comprising

[0042] A drug delivery insert 10, the drug delivery insert 10 includes a drug delivery olive shell 11 having a rotation axis O-O, an inner cavity 16 of the insert is provided in the drug delivery olive shell 11, a medicine squeezing water inlet 14 is provided at the bottom of the drug delivery olive shell 11 along the rotation axis direction, and a top opening 15 is provided at the top. The drug delivery insert 10 is used for inserting into a local part;

[0043] A medicine discharging mechanism 20, the medicine discharging mechanism 20 is provided on the drug delivery insert 10. The medicine discharging mechanism 20 includes an elastic medicine bag 21 and a medicine discharging valve orifice 22. The medicine discharging valve orifice 22 is provided at the top opening 15. The medicine discharging mechanism 20 is used for squeezing the elastic medicine bag 21 through water pressure to bulge a bulge 27 through the medicine discharging valve orifice 22 to push the content forward and spray the liquid medicine to a local part.

[0044] The medicine - delivering olive shell 11 includes an upper conical shell 12 and a lower conical shell 13. The large - cross - section ends of the upper conical shell 12 and the lower conical shell 13 are butted by flange and fastened by a plurality of bolts to form the inner cavity 16 of the insert. The lower conical shell 13 includes a small - cross - section end wall, and a bottom buffer cavity 17 communicating with the inner cavity 16 of the insert is provided on the small - cross - section end wall. The upper conical shell 12 includes a main conical part 12.1 and a top conical part 12.2 that radially extends outward by a shell thickness S through a transition inclined wall.

[0045] The lower conical shell 13 is provided with a medicine - squeezing water inlet 14 and an overflow water outlet communicating with the bottom buffer cavity 17. The medicine - squeezing water inlet 14 is provided with an inlet check valve and is connected to the tap water source through a rotary joint and a medicine - inlet pump; at the same time, the overflow water outlet is provided with an outlet check valve and is led to one side of the toilet bowl through a drainage pipe.

[0046] The medicine - spitting mechanism 20 includes an elastic medicine bag 21 and a medicine - spitting valve orifice 22. The elastic medicine bag 21 is arranged in the inner cavity 16 of the insert. The elastic medicine bag 21 includes a first soft film 21.1 and a second soft film 21.2 clamped between the upper conical shell and the lower conical shell. The space between the first soft film 21.1 and the second soft film 21.2 forms a medicine - containing cavity 26. One end of the medicine - inlet joint 28 is arranged between the flanges of the upper conical shell and the lower conical shell and communicates with the medicine - containing cavity 26, and the other end of the medicine - inlet joint 28 is connected to the medicine - inlet joint through a medicine - inlet pump. The medicine - spitting valve orifice 22 is fixedly arranged at the top opening of the medicine - delivering insert 10 and communicates with the inner cavity 16 of the insert. The medicine - spitting valve orifice 22 includes a valve - orifice main body 23 arranged on the annular inner wall of the top opening of the upper conical shell. The thickness of the valve - orifice main body 23 is equal to the shell thickness S, so that the inner wall of the inner cavity 16 of the insert is smooth. The valve - orifice main body 23 is axially integrally connected with a plurality of spaced - apart elastic soft petals 24. The elastic soft petals 24 extend forward along the rotation axis O - O from one end of the valve - orifice main body by a certain length. The elastic soft petals 24 include a relay conical cylinder section 24.1 and a free inward - retracting section 24.2. The relay conical cylinder section 24.2 extends with the same taper as the upper conical shell 12, and the taper of the free inward - retracting section 24.2 is greater than the taper of the valve - orifice main body 23, forming a stepped taper shape. The number of the elastic soft petals 24 is at least 4, preferably 4 - 6. The free ends of the plurality of elastic soft petals 24 enclose to form a circular medicine - spitting orifice 22.1. The elastic soft petals 24 are made of a soft elastic material, such as polyurethane elastomer, rubber material, etc.

[0047] The inner cavity 16 of the insert between the small - cross - section end wall and the second soft film 21.2 forms a medicine - squeezing inner cavity 18. The medicine - squeezing inner cavity 18 communicates with the bottom buffer cavity 17 and the medicine - squeezing water inlet 14, thus communicating with the water pump and the tap water source. The medicine - squeezing inner cavity 18 is located on the side of the medicine - containing cavity 26 along the rotation axis O - O away from the circular medicine - spitting orifice 22.1.

[0048] When filling with medicine, the medicine inlet connector 28 is connected to the liquid medicine source. Start the medicine inlet pump to pump the liquid medicine into the medicine containing cavity 26. When a certain amount is reached, stop the medicine inlet pump. At the same time, the overflow water outlet is opened to overflow the tap water in the medicine squeezing inner cavity 18.

[0049] The local part refers to parts such as the anus and vagina where it is not easy to apply medicine. After inserting into the local part, start the water inlet pump. The medicine discharging mechanism 20 is used to squeeze out a part of the first soft film 21.1 of the elastic medicine bag 21 from the medicine discharging opening 22.1 of the medicine discharging valve opening 22 to form a bulge 27, and the liquid medicine is applied from the bulge 27 to the human local part.

[0050] The elastic medicine bag 21 will expand directionally towards the medicine discharging valve opening 22 under the extrusion of the water pressure in the bottom buffer cavity 17. To achieve directional expansion and bulging, the first soft film 21.1 and the second soft film 21.2 can be respectively attached to the upper conical shell and the lower conical shell. The elastic medicine bag 21 includes a clamping mouth part 21.3 and an expanding end part 21.4. The thicknesses of the first soft film and the second soft film gradually become thinner from the clamping mouth part 21.3 to the expanding end part 21.4. When the elastic medicine bag 21 is squeezed by the liquid in the medicine squeezing inner cavity 18, the first soft film 21.1 and the second soft film will inevitably expand towards the medicine discharging valve opening 22. Press a certain amount of liquid medicine into the elastic medicine bag 21 from the medicine inlet connector 26 in advance. As the quantitative liquid medicine is added to the elastic medicine bag 21, the elastic medicine bag 21 expands in the inner cavity 16 of the insert body, and the tap water in the inner cavity 16 of the insert body is drained from the overflow water outlet through the drainage tube to one side of the toilet bowl.

[0051] A plurality of medicine spraying buttons 40 are buckled on the inner wall of the expanding end part of the first soft film 21.1. The medicine spraying buttons 40 can not affect the expansion performance of the first soft film and also ensure that the liquid medicine is sprayed out from the inner hole under a certain pressure.

[0052] The medicine spraying button 40 includes a button barrel cap 41, a buckling outer sleeve 42 and a film pressing cover 43. A buckling groove 46 is provided between the buckling outer sleeve 42 and the button barrel cap 41. A protruding ring opening cutter 45 is provided at the right end of the button barrel cap 41. The first soft film 21.1 covers the right end of the button barrel cap 41 and is automatically cut by the ring opening cutter 45. The threaded cylinder body of the film pressing cover 43 is threadedly connected to the right end of the button barrel cap 41 to press the opening edge of the first soft film against the buckling groove 46.

[0053] Specifically, the button barrel cap 41 and the snap-on outer sleeve 42 are coaxially and integrally connected as a rotating body with the rotation axis O-O. The button barrel cap 41 is provided with an inner hole. The cap top wall at the left end is provided with a medicine spraying through hole 44 communicating with its inner hole. The outer periphery at the right end is provided with threads. The first soft film 21.1 covers the right end of the button barrel cap 41 and is cut with a hole by the hole-opening knife 45, and the first soft film 21.1 slides into the snap-in groove 46. The threaded cylinder body of the film pressing cover 43 is screwed into the right end of the button barrel cap 41. As the threaded cylinder body is screwed in, the threaded cylinder body presses the hole part of the first soft film against the bottom of the snap-in groove 46. At the same time, the cover body of the film pressing cover 43 presses the first soft film 21.1 around the hole part against the edge of the right end socket of the snap-on outer sleeve 42. In this way, the expansion performance of the first soft film is not affected.

[0054] A liquid spraying control valve 50 is fixedly arranged in the inner hole of the button barrel cap 41. The liquid spraying control valve 50 is used to open the medicine spraying through hole 41.1 to spray out the liquid medicine when the pressure in the medicine containing cavity 26 reaches the preset value P 喷 . The liquid spraying control valve 50 includes an inner hole inserting sleeve 51, and a support frame plate 52 is integrally connected to the front end of the inner hole inserting sleeve 51. A liquid sealing valve cap 53 is slidably arranged on the support frame plate 52 along the rotation axis O-O. A spring 54 abuts between the liquid sealing valve cap 53 and the support frame plate 52. The liquid sealing valve cap 53 is liquid-sealedly abutted against one end of the medicine spraying through hole 41.1. The spring 54 is a cylindrical helical compression spring. When its geometric parameters are fixed, it has a free height H0. When it is subjected to an axial load, it has a minimum axial load F1 corresponding to a first height H1 and a maximum axial load F2 corresponding to a second height H2. Selecting the compression deformation force, that is, the preset value P 喷 satisfying F1≤P 喷 ≤F2 / 2 can meet the requirement. The support frame plate 52 is provided with a guide sliding cylinder 55 and a plurality of overnight holes 56 evenly distributed on the outer periphery of the guide sliding cylinder 55 along the rotation axis. A liquid sealing valve cap 53 is slidably arranged in the guide sliding cylinder 55. The liquid sealing valve cap 53 includes a liquid sealing cap body 57 and a guide sliding rod 58. The liquid sealing cap body 57 abuts against the end of the medicine spraying through hole 41.1 to seal the spraying of the liquid medicine.

[0055] Test and adjust the compression deformation force of the spring 54 of the medicine spraying control valve 50 so that when the pressure in the medicine containing cavity 26 is equal to P 喷 , the protruding length L of the top of the bulge 27 protruding from the elastic soft petals 24 is about 10-20 mm. At this moment, the liquid spraying control valve 50 automatically opens to spray out the liquid medicine.

[0056] A cleaning mechanism 30 is provided at the lower part of the medicine administration insert body 10. The cleaning mechanism 30 includes a plurality of flushing nozzles 31. The flushing nozzles 31 are annularly and evenly distributed outside the lower conical shell 13. Each flushing nozzle 31 communicates with a C-shaped pipe 32. One end of the C-shaped pipe 32 communicates with a switching valve and a tap water source.

[0057] A medicine application method for a local part medicine spraying nozzle includes

[0058] S1 Liquid medicine filling

[0059] When filling the medicine, the medicine inlet joint 28 is connected to the liquid medicine source. Start the medicine inlet pump, and the liquid medicine can be pumped into the medicine containing cavity 26. Stop the medicine inlet pump when a certain amount of liquid medicine is reached. At the same time, the overflow water outlet is opened to overflow the tap water in the medicine squeezing inner cavity 18;

[0060] S2 Insert into the local part

[0061] Slowly insert the spitting sac valve orifice 22 into the local part until the upper conical shell basically enters;

[0062] S3 Bulge forward push

[0063] Start the water inlet pump, the water inlet of the medicine squeezing water inlet 14 allows water to enter, the medicine squeezing inner cavity 18 is pressurized by the incoming water, and the second soft film 21.2 moves directionally towards the middle part. This will cause the pressure in the medicine containing cavity 26 to gradually increase, thereby forcing the first soft film 21.1 to expand directionally along the rotation axis O-O towards the spitting sac valve orifice 22 and bulge out a bulge 27 from the spitting sac orifice 22.1. The bulge 27 protrudes outside the spitting sac valve orifice 22 and pushes the contents forward.

[0064] S4 Spray medicine when pushing forward a predetermined length

[0065] Adjust the compression deformation force of the spring 54 of the liquid spraying control valve 50 through experiments. When the protruding length L of the bulge 27 from the top of the elastic soft petals 24 is the preset length, the liquid spraying control valve 50 automatically opens and sprays the liquid medicine. The preset length L is 10 - 20 mm. As the liquid medicine is sprayed, the medicine squeezing inner cavity 18 maintains a constant pressure. At the same time, the internal pressure in the medicine containing cavity 26 gradually decreases due to the spraying of the liquid medicine, forcing the expanding end of the second soft film 21.2 to expand directionally towards the spitting sac valve orifice 22 and finally bulge out an inner bulge from the spitting sac valve orifice 22. The inner bulge gradually adheres to the bulge of the first soft film, causing all the liquid medicine inside to be sprayed out, and the medicine application is completed.

[0066] Before medicine application, the valve orifice main body 23 is suitable for playing a supporting role when entering the local part; the bulge 27 is suitable for pushing the contents in the front section of the local part (such as the anus) to a deeper place. All the liquid medicine is sprayed out from the multiple spraying buttons 40. After the medicine application is completed, the medicine delivery nozzle is removed from the local part, and the cleaning mechanism sprays water to clean the spitting sac valve orifice 42 and the bulge. Finally, the water pressure in the insertion inner cavity gradually decreases, and the bulge of the elastic medicine sac 21 automatically retracts from the spitting sac valve orifice 42.

[0067] For the medicine delivery nozzle of the local part, compared with the prior art, the medicine delivery insert 10 is first inserted into the local part, the spitting sac mechanism 20 acts to bulge out a bulge from the top opening of the medicine delivery insert 20 to push the contents forward, and then the spraying hole accurately delivers the medicine, enabling all the liquid medicine to be sprayed out without residue; after the medicine application, the cleaning mechanism cleans, and the elastic medicine sac retracts and returns to its original state. Embodiment

[0068] Improve the drug application structure of the spitting sac mechanism, and the other structures are the same as those in Embodiment 1.

[0069] A drug delivery nozzle for a local part, comprising

[0070] The spitting sac mechanism 200, the spitting sac mechanism 200 includes an elastic drug sac 210 and a spitting sac valve orifice 22. The elastic drug sac 210 includes a first soft film 211 and a second soft film 212. The first soft film 211 is an annular cylindrical film. The top end of the first soft film 211 is integrally connected to the spitting sac valve orifice 22, specifically integrally connected to the top of the valve orifice main body 23. The bottom end is clamped between the upper conical shell 12 and the lower conical shell 13, so that an annular liquid medicine containing cavity 260 is formed between the elastic drug sac 210 and the upper conical shell 12. A second soft film 212 is also clamped between the upper conical shell 12 and the lower conical shell 13. An extrusion cavity 18 is formed between the second soft film 212 and the lower conical shell 13. When loading medicine, the extrusion cavity 18 is located on the side of the medicine containing cavity 260 far from the circular spitting sac orifice 22.1 along the rotation axis O-O. The extrusion water inlet 14 communicates with the extrusion cavity 18. At this time, the second soft film 212 adheres to the inner wall of the lower conical shell 13, and the extrusion cavity 18 is emptied.

[0071] The first soft film 211 and the second soft film 212 respectively include a clamping mouth part 21.3 and an expanding end part 21.4. The thicknesses of the first soft film 211 and the second soft film gradually become thinner from the clamping mouth part 21.3 to the expanding end part 21.4, ensuring that the middle part expands radially inward when filling with liquid medicine.

[0072] A plurality of spraying inclined holes 19 are provided at intervals on the top of the upper conical shell 12. The axis of the spraying inclined hole 19 forms an angle with the rotation axis O-O, preferably less than 10°. A liquid spraying control valve 50 is arranged in the spraying inclined hole 19. When the pressure in the medicine containing cavity 260 is increased by the pressure extrusion of the extrusion cavity 18 and reaches the preset value P 喷 At this time, the liquid spraying control valve 50 opens the spraying through hole 44 and sprays out from the medicine containing cavity 260.

[0073] When applying medicine, the water pump starts, and water enters from the extrusion water inlet 14. As the water pressure in the extrusion cavity 18 increases, the second soft film 212 expands directionally along the rotation axis O-O towards the circular spitting sac orifice 22.1. During this period, the expanding end part 214 crosses the first soft film 211 until a bulge 270 bulges out from the circular spitting sac orifice 22.1. The bulge 270 pushes the content forward along the rotation axis O-O. Test and adjust the compression deformation force of the spring 54 of the spraying control valve 50 so that the pressure in the medicine containing cavity 260 is equal to P 喷 At this time, the protruding length L of the top end of the bulge 270 protruding from the elastic soft petal 24 is about 10 - 20 mm. At this moment, the liquid spraying control valve 50 automatically opens and sprays out the liquid medicine.

[0074] A drug delivery nozzle for a local area solves the technical problem of "effectively delivering drugs to the internal affected area once without the help of fingers, truly achieving precise drug delivery to the local part of the human body and not damaging the mucosal tissue" through the following technical means.

[0075] (1) The drug delivery insert 10 cooperates with the ejection sac mechanisms 20, 200 to achieve flexible insertion into the local area without damaging the mucosal tissue.

[0076] The drug delivery insert 10 has an upper conical shell 12. The upper part of the upper conical shell 12 is fixedly provided with the ejection sac orifices 22, 220 of the ejection sac mechanisms 20, 200. The ejection sac orifices 22, 220 include a plurality of elastic soft petals 24 arranged at intervals. The elastic soft petals 24 include a relay conical cylinder section 24.1 and a free inward contraction section 24.2. That is to say, a plurality of elastic soft petals 24 form a soft insertion end with an elastic and contractible taper step change, which is suitable for non-damaging insertion into the anus or vagina that contracts frequently.

[0077] (2) The medicine extrusion cavity 18 extrudes the medicine containing cavities 26, 260 to achieve precise drug delivery after pushing the content forward with a bulge.

[0078] A medicine containing cavity 26 (Example 1) is formed between the first soft film 21.1 and the second soft film 21.2 of the elastic medicine sac 21, or a medicine containing cavity 260 (Example 2) is formed between the first soft film 211 of the elastic medicine sac 210 and the upper conical shell 12. An extrusion cavity 18 is formed between the second soft films 21.2, 212 and the lower conical shell 13, so that the extrusion cavity 18 is located on the side away from the top opening 15 or the circular ejection sac orifice 22.1 along the rotation axis O-O relative to the medicine containing cavities 26, 260. A pressure water source is filled in the extrusion cavity 18 to squeeze the medicine containing cavity 26 so that the first soft film 21.1 expands directionally towards the circular ejection sac orifice 22.1 along the rotation axis (Example 1); or a pressure water source is filled in the extrusion cavity 18 to squeeze the second soft film 21.2 to expand directionally towards the circular ejection sac orifice 22.1 along the rotation axis and cross the first soft film 211 to cause a radially outward extrusion of the medicine containing cavity 260 (Example 2), until a bulge 27, 270 is formed on the first soft film 21.1 (Example 1) or the second soft film (Example 2) bulges out of the circular ejection sac orifice 22.1. When the pressure in the medicine containing cavity 260 is equal to the preset value P 喷 the top extension length L of the bulge 27, 270 extending out of the top of the elastic soft petals 24 is about 10 - 20 mm. At this moment, the liquid spraying control valve 50 automatically opens and sprays the liquid medicine. Thus, precise drug delivery is achieved after pushing the content forward with a bulge.

[0079] The drug delivery nozzle for the local area, compared with the prior art, inserts into the local area without damaging the mucosal tissue, precisely delivers the drug after pushing the content forward, has a good experience, and the drug delivery is accurate.

Claims

1. A drug delivery nozzle for a local site, characterized in that, Comprising A drug administration insert (10), the drug administration insert (10) includes a drug administration olive shell (11) having a rotation axis O-O, the drug administration olive shell (11) includes an upper conical shell (12) and a lower conical shell (13) with large cross-section docking, an inner cavity (16) of the insert is provided inside the drug administration olive shell (11), a medicine squeezing water inlet (14) is provided at the bottom of the drug administration olive shell (11) along the rotation axis direction, and a top opening (15) is provided at the top. The drug administration insert (10) is used to be inserted into a local part; A vomiting sac mechanism (20, 200), the vomiting sac mechanism (20, 200) is arranged on the drug administration insert (10), the vomiting sac mechanism (20, 200) includes an elastic medicine sac (21, 210) and a vomiting sac valve opening (22), the vomiting sac valve opening (22) is arranged at the top opening (15), and the vomiting sac mechanism (20) is used to squeeze the elastic medicine sac (21, 210) through water pressure to bulge a drum (27, 270) through the vomiting sac valve opening (22) to push the content forward and spray the liquid medicine to the local part.

2. The drug delivery nozzle for a local part according to claim 1, characterized in that, The elastic medicine sac (21) includes a first soft film (21.1) and a second soft film (21.2) with the outer edges clamped at the docking place. A medicine accommodating cavity (26) is formed between the first soft film (21.1) and the second soft film (21.2), and a medicine squeezing inner cavity (18) is formed between the second soft film (21.2) and the lower conical shell (13), so that the medicine squeezing inner cavity (18) is located on the side away from the top opening (15) relative to the medicine accommodating cavity (26) along the rotation axis O-O; the drum (27) is formed by the medicine squeezing inner cavity (18) squeezing the medicine accommodating cavity (26) to cause the first soft film (21.1) to expand directionally through the vomiting sac valve opening (22).

3. The drug delivery nozzle for a local part according to claim 1, characterized in that, The elastic medicine sac (210) includes a first soft film (211) and a second soft film (212). The top end of the first soft film (211) is integrally connected to the vomiting sac valve opening (22), and the bottom end is clamped between the upper conical shell (12) and the lower conical shell (13), so that a medicine accommodating cavity (260) is formed between the first soft film (211) and the upper conical shell (12), and a medicine squeezing inner cavity (18) is formed between the second soft film (212) and the lower conical shell (13), so that the medicine squeezing inner cavity (18) is located on the side away from the top opening (15) relative to the medicine accommodating cavity (26, 260) along the rotation axis O-O; the drum (270) is formed by the pressure increase in the medicine squeezing inner cavity (18) causing the second soft film (212) to expand across the medicine accommodating cavity (260) and bulge through the vomiting sac valve opening (22).

4. The drug delivery nozzle for a local part according to claim 2 or 3, characterized in that, The elastic medicine sac (21, 210) includes a clamping mouth part (21.3) and an expanding end part (21.4, 214). The thicknesses of the first soft film (21.1, 211) and the second soft film (21.2, 212) gradually become thinner from the clamping mouth part (21.3) to the expanding end part (21.4, 214), so that when the elastic medicine sac (21, 210) is squeezed by the liquid in the medicine squeezing inner cavity (18), the first soft film (21.1, 211) and / or the second soft film (21.2, 212) expand directionally along the rotation axis O-U towards the vomiting sac valve opening (22).

5. The drug delivery nozzle for a local part according to claim 4, characterized in that, The vomit sac valve opening (22) includes a valve opening main body (23) provided on the inner wall of the upper conical shell. The valve opening main body (23) is axially integrally connected to a plurality of elastic soft petals (24) arranged at intervals. The elastic soft petals (24) extend forward along the rotation axis O-O from one end of the valve opening main body (23) for a certain length. The elastic soft petals (24) include a relay conical cylinder section (24.1) and a free inward contraction section (24.2). The relay conical cylinder section (24.1) extends with the same taper as the upper conical shell (12), and the taper of the free inward contraction section (24.2) is greater than that of the valve opening main body (23) to form a stepped inward contraction shape.

6. The drug delivery nozzle for a local part according to claim 4, wherein, The lower conical shell (13) includes a small cross-section end wall. The small cross-section end wall is provided with a bottom buffer cavity (17) communicating with the medicine extrusion cavity (18). The medicine extrusion water inlet (14) communicates with the bottom buffer cavity (17), and the medicine extrusion water inlet (14) is connected to a tap water source through a water pump.

7. A drug delivery nozzle for a local part as described in claim 2, characterized in that, A plurality of spraying buttons (40) are buckled on the inner wall of the expanded end of the first soft film (21.1). The spraying buttons (40) automatically form a circular opening in a part of the first soft film (21.1) and are clamped at the edge of the circular opening. A liquid spraying control valve (50) is fixedly arranged in the inner hole of the spraying button (40). The liquid spraying control valve (50) can automatically spray the liquid medicine when the internal pressure of the medicine containing cavity (26) is greater than or equal to a preset value P spray.

8. A drug delivery nozzle for a local part as described in claim 3, characterized in that, A plurality of spraying inclined holes (19) are arranged at intervals on the top of the upper conical shell (12). The spraying inclined holes (19) communicate with the medicine containing cavity (260). A liquid spraying control valve (50) is arranged in the spraying inclined holes (19). The liquid spraying control valve (50) can automatically spray the liquid medicine when the internal pressure of the medicine containing cavity (260) is greater than or equal to a preset value P spray.

9. The drug delivery nozzle for a local part according to claim 7, characterized in that, A cleaning mechanism (30) is arranged at the lower part of the medicine administration insert body (10). The cleaning mechanism (30) includes a plurality of flushing nozzles (31). The flushing nozzles (31) are annularly and evenly distributed outside the lower conical shell (13). Each flushing nozzle (31) communicates with a flushing thin tube, and the flushing thin tube communicates with a C-shaped tube. One end of the C-shaped tube communicates with a switching valve and a tap water source.

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