Radial dosing device for anorectal surgery and using method thereof

Abstract

The invention relates to the technical field of dosing devices, and discloses a radial dosing device for anorectal surgery and a using method thereof.The dosing device comprises a medicine injection barrel, a dosing pipe is fixed in the medicine injection barrel, a plurality of first round holes are formed in the circumferential surface of the medicine injection barrel, a plurality of medicine outlets distributed at equal intervals are formed in the dosing pipe, and the first round holes are communicated with the first round holes. A first round hole is formed in the medicine injection barrel, a first nozzle is arranged in the first round hole, the first nozzle is connected to the medicine outlet in a sliding mode, a sealing barrel is connected to the medicine injection barrel in a sliding mode, one end of the sealing barrel is elastically connected with the medicine injection barrel through a first spring, and a plurality of second round holes are formed in the sealing barrel; the first nozzle can spray liquid medicine conveniently when working, the situation that the first nozzle is blocked by foreign matter and the spraying effect is affected is avoided, a gap between the medicine injection cylinder and the surface of the intestinal tract can be increased after the first expansion ring and the second expansion ring expand, the liquid medicine sprayed by the first nozzle can be distributed on the surface of the anorectal tract, and the medicine applying effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drug delivery devices, in particular to a radial drug delivery device for anorectal surgery and a use method thereof. Background Art

[0002] Anorectal drug delivery is a method of delivering drugs into the rectum through the anus to treat related diseases. The role of the anorectal disease drug delivery device: Drug delivery medium: The drug delivery device, as a medium for drug delivery, can deliver drugs directly to the anus or rectum to ensure effective contact or absorption of the drug. It is often used for the application of enema. The effects and functions of enema mainly include relieving constipation, lubricating the intestines, softening stools, lubricating the anal canal, moisturizing, and lubricating the skin. The details are as follows: 1. Relieve constipation: Enema is a commonly used laxative drug, and its ingredients mainly include glycerin, sorbitol, honey dew, etc. When encountering constipation such as difficulty in defecation or reduced bowel movements, you can use enema to relieve it according to the doctor's advice. 2. Lubricate the intestine: Enema contains glycerin, which will not be absorbed by the intestinal wall after being injected into the intestine, and has the effect of lubricating the intestine. 3. Soften stool: The sorbitol component in the enema has the effect of softening stool and can promote stool discharge. 4. Lubricate the anal canal: The ingredients in it have the function of lubricating the anal canal. These ingredients can stimulate the intestinal wall, promote intestinal peristalsis, and help improve constipation.

[0003] In the prior art, when the applicator is inserted into the anus and rectum, as the amount of enema injected increases, part of the injected enema will flow into the deep anus and rectum, causing discomfort. If the anal control function decreases, another part of the enema will flow out of the anus, causing drug waste and reducing the effect of drug application. Secondly, when the applicator is inserted into the intestine, it will be in close contact with the inner wall of the intestine. Due to the small gap, some lesions cannot contact with the enema, which will affect the effect of drug application. Summary of the invention

[0004] The present invention provides a radial drug delivery device for anorectal surgery and a method for using the same. The device has the function of preventing foreign matter from clogging the first nozzle and affecting the spraying effect. The first expansion ring and the second expansion ring can increase the gap between the drug injection barrel and the surface of the intestine after expansion, so that the drug solution sprayed by the first nozzle can be distributed on the surface of the intestine, thereby improving the beneficial effect of drug application. The device solves the problem mentioned in the above background technology that when the drug delivery device is inserted into the anorectal cavity, as the amount of drug solution injected increases, a portion of the injected drug solution will flow into the deep part of the anorectal cavity, causing discomfort. If the anal defecation control function decreases, another portion of the drug solution will flow out of the anus, causing drug waste and reducing the drug application effect. Secondly, when the drug delivery device is inserted into the intestine, it will be in close contact with the inner wall of the intestine. Due to the small gap, some lesions cannot be in contact with the drug solution, which will affect the drug application effect.

[0005] The present invention provides the following technical solution: a radial drug delivery device for anorectal surgery, comprising a drug injection barrel, a drug delivery tube fixed in the drug injection barrel, a plurality of first circular holes opened on the circumferential surface of the drug injection barrel, a plurality of equally spaced drug outlets arranged on the drug delivery tube, a first nozzle arranged in the first circular hole, the first nozzle slidably connected to the drug outlet, a sealing barrel slidably connected to the drug injection barrel, one end of the sealing barrel being elastically connected to the drug injection barrel via a first spring, and a plurality of second circular holes opened on the sealing barrel; A first clamping groove is provided on one side of the drug injection barrel, a first expansion ring is provided in the first clamping groove, a piston assembly for inflating the first expansion ring is provided on the drug delivery tube, a plurality of interference assemblies are provided in the first clamping groove, the interference assemblies interfere with the first expansion ring, the interference assemblies are slidably connected to the drug injection barrel, a first interference strip is fixed on the sealing barrel, the first interference strip is slidably connected to the drug injection barrel, a mounting frame is fixed on the drug injection barrel, a interference seesaw is provided between the first interference strip and the interference assembly, and the interference seesaw is elastically connected to the mounting frame through a first torsion spring.

[0006] As an optional solution of the radial drug administrator for anorectal surgery described in the present invention, wherein: a second slot is provided at the other end of the drug injection barrel, a hollow ring block is provided on one side of the second slot, the hollow ring block is fixed on the drug injection barrel, a second expansion ring is provided in the second slot, a rotary valve is fixed in the hollow ring block, the water inlet of the rotary valve is connected to the drug administration tube, the water outlet of the rotary valve is connected to the second expansion ring, a plurality of limiting wedge blocks are provided in the second slot, and the limiting wedge blocks are elastically connected to the hollow ring block through a second spring.

[0007] As an optional solution of the radial drug delivery device for anorectal surgery described in the present invention, the piston assembly includes a hollow telescopic piston rod, the hollow telescopic piston rod is slidably connected to the drug injection barrel, a piston plate is slidably connected in the drug delivery tube, the piston plate is fixedly connected to one end of the hollow telescopic piston rod, and the piston plate is elastically connected to the drug injection barrel via a third spring.

[0008] As an optional solution of the radial medicator for anorectal surgery described in the present invention, the interference component includes a interference rod, which is elastically connected to the injection barrel through a fourth spring, one end of the interference rod is in conflict with the interference seesaw, and the other end of the interference rod is fixed with a first interference wedge, and one end of the first interference wedge is in conflict with the first expansion ring.

[0009] As an optional solution of the radial drug administrator for anorectal surgery described in the present invention, a first soft tentacle is provided at one end of the drug injection barrel, the first soft tentacle is threadedly connected to one end of the drug injection barrel through a first threaded ring, and a plug is provided on the first soft tentacle for sealing the hollow telescopic piston rod.

[0010] As an optional solution of the radial drug delivery device for anorectal surgery described in the present invention, a strip connecting block is provided on the first nozzle, the strip connecting block is elastically connected to the drug delivery tube through a fifth spring, a second resistance wedge is provided at one end of the resistance rod, and the second resistance wedge is fixed on the first nozzle.

[0011] As an optional solution of the radial drug delivery device for anorectal surgery described in the present invention, wherein: a rack is slidably connected to the hollow ring block, a third interference wedge is fixed to one end of the rack, a fourth interference wedge is fixed to one of the first nozzles, the third interference wedge is in conflict with the fourth interference wedge, a sixth spring is connected between the rack and the hollow ring block, a valve stem is provided on the rotary valve, a gear is fixed to the valve stem, and the gear and the rack are meshed with each other.

[0012] As an optional solution of the radial medicator for anorectal surgery described in the present invention, the hollow telescopic piston rod includes a first hollow rod, the first hollow rod is slidably connected to the injection barrel, and one end of the first hollow rod is fixedly connected to the piston plate, the other end of the first hollow rod is slidably connected to the second hollow rod, and a seventh spring is connected between the first hollow rod and the second hollow rod.

[0013] As an optional solution of the radial drug delivery device for anorectal surgery described in the present invention, the drug delivery device also includes a second soft tentacle head and a second nozzle, the second nozzle is threadedly connected to the second hollow rod, the second soft tentacle head includes a connecting seat, the connecting seat is threadedly connected to one end of the injection barrel through a second threaded ring, a cone piece is rotatably connected to the connecting seat, a second torsion spring is connected between the cone piece and the connecting seat, a contact frame is fixed to the cone piece, and the contact frame contacts the second nozzle.

[0014] A method for using a radial drug delivery device for anorectal surgery comprises the following specific steps: Step 1: Insert the drug delivery device. Connect the drug delivery tube of the drug delivery device to the injection pipe of the drug delivery pump, and then disinfect the entire drug delivery device. Hold one end of the drug delivery tube, aim the other end of the injection barrel at the patient's anus, and slowly insert the injection barrel together with the sealing barrel into the anus to ensure that the insertion depth is appropriate; Step 2, drug injection expansion treatment, the drug liquid delivery pump injects the drug liquid into the drug delivery tube, a small part of the drug liquid flows into the second expansion ring on the drug injection barrel through the rotary valve, prompting the second expansion ring to expand, and improve the tightness of one end of the drug delivery device and the intestinal surface, avoiding the drug from overflowing from the anus when applying the drug, and at the same time, the remaining drug liquid flows into the deep part of the drug delivery tube, pushing the piston assembly to move, prompting the piston assembly to compress the air, and the compressed air flows into the first expansion ring at the other end of the drug injection barrel, prompting the first expansion ring to expand, promoting the tightness of the other end of the drug delivery device and the intestinal surface, avoiding the drug from overflowing to the deep part of the intestine when applying the drug, and prompting the drug liquid to act on the intestinal lesions. At the same time, after the first expansion ring and the second expansion ring are expanded, the gap between the drug injection barrel and the intestine is increased; Step 3, radial drug application treatment, the first expansion ring is in contact with the resistance component during expansion, and during the contact process, the resistance component can push the resistance seesaw to rotate in the drug injection barrel when it moves horizontally, causing the resistance seesaw to deflect, and one end of the resistance seesaw is against the first resistance strip on the sealing cylinder, thereby pushing the sealing cylinder to move horizontally on the drug injection barrel, causing the second circular hole on the sealing barrel to coincide with the center of the first circular hole on the drug injection barrel, facilitating the exposure of the first nozzle, and the drug liquid flows through the drug outlet through the drug administration tube and is transported to the first nozzle, and the drug liquid is evenly sprayed onto the intestinal lesion through the gap between the drug injection barrel and the intestine, and radial drug application treatment is performed; Step 4: The nozzle extends to spray medicine. The resistance component continues to move after resisting the resistance seesaw, and can achieve the purpose of resisting the second resistance wedge on the first nozzle, so that the second resistance wedge drives the first nozzle to slide on the medicine outlet. The first nozzles move synchronously with the cooperation of the strip connecting block, and extend after passing through the first circular hole and the second circular hole, thereby reducing the obstruction of the first circular hole and the second circular hole to the first nozzle, and further improving the effect of applying medicine to the intestinal lesions. Step 5: Expand the spraying range of the liquid medicine. The second nozzle is threadedly connected to the hollow telescopic piston rod in the piston assembly. At the same time, the second soft tentacle head is threadedly connected to the injection cartridge. As the injection cartridge is synchronously inserted into the anus, after the liquid medicine is injected, the piston assembly is thrust by the liquid medicine, causing the hollow telescopic piston rod to drive the second nozzle to move horizontally. During the movement of the second nozzle, it conflicts with the abutment frame fixed on the cone piece, causing the cone piece to deflect on the connecting seat, making it convenient to open the second soft tentacle head, causing the second nozzle to extend, and the liquid medicine flows into the second nozzle through the hollow telescopic piston rod for spraying, which can spray the intestinal tract axially and increase the spraying range; Step six, detachment of the drug delivery device. After the drug application is completed, connect the drug delivery tube to the suction pipe of the drug delivery pump to suck out the residual drug in the drug delivery tube, and reset the piston assembly and the resistance assembly. The first expansion ring is resisted by the resistance assembly and received in the first slot. At the same time, the second expansion ring is reset under the resistance of the limiting wedge block. After the drug adsorption is completed, hold one end of the drug delivery tube and pull out the drug delivery device.

[0015] The present invention has the following beneficial effects: 1. In the radial drug delivery device for anorectal surgery, the drug delivery tube fixed in the drug delivery tube is conveniently connected to the drug delivery device for drug delivery, and the drug delivery tube is conveniently connected to the first nozzle through the plurality of drug outlets arranged thereon, so that the drug delivery tube can be sprayed through the first nozzle, and the first circular hole provided on the drug delivery tube facilitates the sprayed drug delivery to pass through the drug delivery tube to spray the lesion in the intestine, and the sealing tube elastically connected to the drug delivery tube can protect the first nozzle to prevent foreign matter from blocking the first nozzle when the drug delivery tube is inserted into the intestine, thereby affecting the spraying effect, and secondly, the first nozzle can be blocked to maintain the pressure of the drug delivery tube, so that the drug delivery tube can quickly push the piston assembly to move, so that the piston assembly can compress the gas and deliver it to the first expansion ring, so that the first expansion ring expands and increases its volume, and one end of the drug delivery device can fit more closely with the surface of the intestine, so as to prevent the drug from overflowing to the deep intestine when applying the drug, and at the same time, part of the drug delivery process The medicine liquid can flow into the second expansion ring through the rotating valve, prompting the second expansion ring to expand, improving the tightness of the other end of the drug delivery device to the intestinal surface, avoiding the overflow of medicine from the anus when applying the medicine, and achieving the purpose of sealing between the two ends of the drug injection barrel and the intestine, which can prompt the medicine liquid to act concentratedly on the intestinal lesions, reduce the waste of medicine liquid, and greatly improve the intestinal medicine application effect. At the same time, after the first expansion ring expands, it can achieve the purpose of conflicting with the conflict component, prompting the conflict rod and the conflict seesaw to conflict during the horizontal movement of the conflict component, and achieving the purpose of conflicting with the first conflict strip after the conflict seesaw is deflected, so that the sealing cylinder slides on the drug injection barrel, facilitating the coincidence of the center of the first circular hole and the second circular hole, facilitating the first nozzle to spray the medicine liquid when working, avoiding foreign matter from clogging the first nozzle and affecting the spraying effect. After expansion, the first expansion ring and the second expansion ring can increase the gap between the drug injection barrel and the intestinal surface, so that the medicine liquid sprayed by the first nozzle can be distributed on the intestinal surface, thereby improving the effect of medicine application.

[0016] 2. In the radial drug delivery device for anorectal surgery, the purpose of connecting several first nozzles can be achieved through the provided strip-shaped connecting block. The second interference wedge fixed on the first nozzle can continue to move horizontally after the interference rod of the interference assembly interferes with the interference seesaw, so as to achieve the purpose of the interference rod and the second interference wedge, so as to enable the first nozzle to penetrate the first circular hole and the second circular hole, so as to avoid the small aperture of the first circular hole and the second circular hole causing obstruction to the injection of the first nozzle, and to increase the range of the first nozzle to inject the liquid medicine. At the same time, the first nozzle can achieve the purpose of driving the fourth interference wedge to move synchronously during the movement, so as to enable the fourth interference wedge to release the interference with the third interference wedge, so as to realize that when the rack slides on the hollow ring block, the gear on the valve stem is driven to rotate, so as to prompt the rotary valve to close, so as to avoid the pressure drop inside the second expansion ring during the medication application process, which affects the use effect. 3. In the radial drug delivery device for anorectal surgery, when the second soft tentacle head is threadedly connected to one end of the drug injection cartridge, the second soft tentacle head can be easily replaced, and the second nozzle can be connected to the second hollow rod in the hollow telescopic piston rod. When a part of the medicine in the drug delivery tube flows into the second nozzle through the first hollow rod and the second hollow rod, the purpose of axially spraying the medicine on the intestine can be achieved, the spraying range of the drug delivery device can be increased, and the drug application effect can be further improved. When the piston plate drives the hollow telescopic piston rod to move, the purpose of the second nozzle and the interference frame on the cone plate can be achieved, so that the cone plate is prompted to rotate on the connecting seat, and the second soft tentacle head is opened to facilitate the extension of the second nozzle, so that the intestine can be sprayed axially, the spraying range can be increased, and the drug application effect can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a structural cross-sectional view of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal structure of the drug injection cartridge of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the interference assembly and the hollow telescopic piston rod of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the second soft tentacle head and the second nozzle of the present invention.

[0022] Figure 6 It is a schematic diagram of the rotary valve structure of the present invention.

[0023] Figure 7 for Figure 2 A partial enlarged schematic diagram in the middle.

[0024] Figure 8 for Figure 2 A partial enlarged schematic diagram of point B in the middle.

[0025] Fig. 9 The present invention is a flowchart of the method for using the drug delivery device.

[0026] In the figure: 1, injection cartridge; 2, drug delivery tube; 201, hollow telescopic piston rod; 2011, first hollow rod; 2012, seventh spring; 2013, second hollow rod; 202, piston plate; 203, third spring; 3, first round hole; 4, drug outlet; 5, first nozzle; 6, sealing cylinder; 7, first spring; 8, first clamping groove; 81, resistance rod; 82, fourth spring; 83, first resistance wedge block; 9, first expansion ring; 10, first resistance strip; 11, mounting frame; 12, resistance seesaw; 13, first torsion spring; 14, second clamping groove; 141, hollow ring block; 15. Second expansion ring; 151. Limiting wedge; 152. Second spring; 16. Rotary valve; 17. First soft tentacle; 18. Plug; 19. Strip connection block; 20. Fifth spring; 21. Second abutting wedge; 22. Rack; 23. Third abutting wedge; 24. Fourth abutting wedge; 25. Sixth spring; 26. Valve stem; 27. Gear; 28. Second soft tentacle head; 281. Connecting seat; 282. Cone; 283. Abutting frame; 284. Second torsion spring; 29. ​​Second nozzle; 30. Second round hole; 31. First threaded ring; 32. Second threaded ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] For example, see Figures 1 to 9 A radial drug delivery device for anorectal surgery, comprising a drug injection barrel 1, a drug delivery tube 2 is fixed in the drug injection barrel 1, a plurality of first circular holes 3 are opened on the circumferential surface of the drug injection barrel 1, a plurality of equally spaced drug outlets 4 are arranged on the drug delivery tube 2, a first nozzle 5 is arranged in the first circular hole 3, the first nozzle 5 is slidably connected to the drug outlet 4, a sealing barrel 6 is slidably connected to the drug injection barrel 1, one end of the sealing barrel 6 is elastically connected to the drug injection barrel 1 through a first spring 7, and a plurality of second circular holes 30 are opened on the sealing barrel 6; A first clamping groove 8 is provided on one side of the drug injection barrel 1, a first expansion ring 9 is provided in the first clamping groove 8, a piston assembly for inflating the first expansion ring 9 is provided on the dosing tube 2, a plurality of resistance assemblies are provided in the first clamping groove 8, the resistance assemblies are in resistance with the first expansion ring 9, the resistance assemblies are slidably connected to the drug injection barrel 1, a first resistance strip 10 is fixed on the sealing barrel 6, the first resistance strip 10 is slidably connected to the drug injection barrel 1, a mounting frame 11 is fixed on the drug injection barrel 1, a resistance seesaw 12 is provided between the first resistance strip 10 and the resistance assemblies, and the resistance seesaw 12 is elastically connected to the mounting frame 11 through a first torsion spring 13.

[0029] A second slot 14 is provided at the other end of the injection barrel 1, a hollow ring block 141 is provided on one side of the second slot 14, the hollow ring block 141 is fixed on the injection barrel 1, a second expansion ring 15 is provided in the second slot 14, a rotary valve 16 is fixed in the hollow ring block 141, a water inlet of the rotary valve 16 is connected to the dosing tube 2, a water outlet of the rotary valve 16 is connected to the second expansion ring 15, a plurality of limiting wedge blocks 151 are provided in the second slot 14, and the limiting wedge blocks 151 are elastically connected to the hollow ring block 141 through a second spring 152.

[0030] The piston assembly includes a hollow telescopic piston rod 201, which is slidably connected to the injection barrel 1. A piston plate 202 is slidably connected in the dosing tube 2. The piston plate 202 is fixedly connected to one end of the hollow telescopic piston rod 201. The piston plate 202 is elastically connected to the injection barrel 1 through a third spring 203.

[0031] The resistance assembly includes a resistance rod 81, which is elastically connected to the injection barrel 1 through a fourth spring 82, one end of the resistance rod 81 resists against the resistance seesaw 12, and the other end of the resistance rod 81 is fixed with a first resistance wedge 83, one end of the first resistance wedge 83 resists against the first expansion ring 9.

[0032] A first soft tentacle 17 is provided at one end of the injection cartridge 1 , and the first soft tentacle 17 is threadedly connected to one end of the injection cartridge 1 through a first threaded ring 31 . A plug 18 for sealing the hollow telescopic piston rod 201 is provided on the first soft tentacle 17 .

[0033] When applying medicine radially, the first soft tentacle 17 is threadedly connected to the end of the injection barrel 1, and the plug 18 arranged on the first soft tentacle 17 is inserted into the second hollow rod 2013 of the hollow telescopic piston rod 201 for blocking to prevent the medicine from overflowing. The end of the second hollow rod 2013 is against the first soft tentacle 17, and a part of the second hollow rod 2013 is retracted into the first hollow rod 2011. The seventh spring 2014 accumulates force, and the drug delivery tube 2 is connected to the injection pipeline of the drug delivery pump. One end of the drug delivery tube 2 is held by hand, and the other end of the injection barrel 1 is aimed at the patient's anus, and the injection barrel 1 together with the sealing tube 6 is slowly inserted The medicine is then delivered to the anus and stops moving when it reaches the intestinal lesion. The medicine delivery pump injects the medicine into the drug delivery tube 2, and a small part of the medicine flows into the second expansion ring 15 installed on the drug injection barrel 1 through the rotary valve 16. The second expansion ring 15 expands and becomes larger in volume, thereby improving the tightness of one end of the drug delivery device and the intestinal surface. The limiting wedge block 151 is resisted and retracts into the hollow ring block 141, and the second spring 152 accumulates force. At the same time, the delivered medicine acts on the piston plate 202 in the piston assembly, prompting the piston plate 202 to drive the hollow telescopic piston rod 201 to move, compressing the air, and the third spring 203 accumulates force, so that the pressure The compressed air flows into the first expansion ring 9, causing the first expansion ring 9 to expand, thereby improving the tightness of the other end of the drug delivery device to fit the intestinal surface, and achieving the purpose of sealing between the two ends of the drug injection cartridge 1 and the intestinal tract, which can cause the drug solution to act on the intestinal lesions, reduce the waste of drug solution, and greatly improve the drug application effect on the intestine. At the same time, after the first expansion ring 9 expands, it can achieve the purpose of conflicting with the first conflicting wedge 83 in the conflicting assembly, causing the first conflicting wedge 83 to drive the conflicting rod 81 to move horizontally and conflict with the conflicting seesaw 12. At the same time, the fourth spring 82 accumulates force, and one end of the conflicting seesaw 12 rotates when it is conflicted. The first torsion spring 13 accumulates force, and the other end of the abutting seesaw 12 can abut on the first abutting strip 10, so as to achieve the purpose of pushing the sealing tube 6 to slide on the injection tube 1. The first spring 7 accumulates force so that the centers of the first circular hole 3 and the second circular hole 30 can coincide with each other, so as to facilitate the spraying of the medicine liquid when the first nozzle 5 is working, and avoid clogging of the first nozzle 5 by foreign matter, thereby affecting the spraying effect. After expansion, the first expansion ring 9 and the second expansion ring 15 can increase the gap between the injection tube 1 and the surface of the intestine. The first nozzle 5 has a certain distance from the inner wall of the intestine, so that the medicine liquid sprayed by the first nozzle 5 can be distributed on the surface of the intestine, thereby improving the effect of applying the medicine.

[0034] The conical end of the first soft tentacle 17 is made of silicone material, which is soft, flexible, non-toxic and tasteless, and can reduce friction when in contact with the intestinal surface.

[0035] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figures 1 to 9A strip connecting block 19 is provided on the first nozzle 5 , and the strip connecting block 19 is elastically connected to the drug delivery tube 2 through a fifth spring 20 . A second conflicting wedge 21 is provided at one end of the conflicting rod 81 , and the second conflicting wedge 21 is fixed on the first nozzle 5 .

[0036] A rack 22 is slidably connected to the hollow ring block 141, and a third interfering wedge 23 is fixed to one end of the rack 22. A fourth interfering wedge 24 is fixed to one of the first nozzles 5, and the third interfering wedge 23 is in conflict with the fourth interfering wedge 24. A sixth spring 25 is connected between the rack 22 and the hollow ring block 141. A valve stem 26 is provided on the rotary valve 16, and a gear 27 is fixed to the valve stem 26. The gear 27 and the rack 22 are meshed with each other.

[0037] In order to improve the spraying effect of the first nozzle 5, refer to Figure 4-Figure 8 , the resistance rod 81 continues to move horizontally after being in conflict with the resistance seesaw 12, so as to achieve the purpose of causing the resistance rod 81 to be in conflict with the second resistance wedge 21 fixed on the first nozzle 5, and can be connected with a plurality of first nozzles 5 through the strip connection block 19, so that when the plurality of first nozzles 5 are affected by the resistance force, they can all slide on the medicine outlet 4, and the fifth spring 20 accumulates force, so that the first nozzle 5 can penetrate the first circular hole 3 and the second circular hole 30, so as to avoid the small aperture of the first circular hole 3 and the second circular hole 30 from hindering the spraying of the first nozzle 5, thereby improving the spraying range of the first nozzle 5 for the liquid medicine and the spraying effect of the liquid medicine; In order to improve the stability of the internal pressure of the second expansion ring 15 and maintain the expansion effect, refer to Figure 6-Figure 8 When the first nozzle 5 slides on the medicine outlet 4, it can achieve the purpose of driving the fourth interference wedge block 24 to move synchronously, prompting the fourth interference wedge block 24 to release the interference with the third interference wedge block 23. When the sixth spring 25 releases the elastic force, the rack 22 can slide on the hollow ring block 141. During the sliding process, the gear 27 on the valve stem 26 can be driven to rotate, and the purpose of automatically closing the rotary valve 16 can be achieved, thereby avoiding the pressure drop inside the second expansion ring 15 during the medicine application process, which affects the use effect.

[0038] A rotatable spherical valve core is arranged inside the rotary valve 16. When the valve stem 26 drives the spherical valve core to rotate, when the through hole of the spherical valve core is connected with the water outlet of the rotary valve 16, it is in an open state. When closed, when the through hole of the spherical valve core is misaligned with the water outlet of the rotary valve 16, the rotary valve 16 is in a closed state.

[0039] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figures 1 to 9The hollow telescopic piston rod 201 includes a first hollow rod 2011, which is slidably connected to the injection barrel 1, and one end of the first hollow rod 2011 is fixedly connected to the piston plate 202, and the other end of the first hollow rod 2011 is slidably connected to the second hollow rod 2013, and a seventh spring 2014 is connected between the first hollow rod 2011 and the second hollow rod 2013.

[0040] The applicator also includes a second soft tentacle head 28 and a second nozzle 29. The second nozzle 29 is threadedly connected to the second hollow rod 2013. The second soft tentacle head 28 includes a connecting seat 281. The connecting seat 281 is threadedly connected to one end of the injection cartridge 1 through a second threaded ring 32. A cone piece 282 is rotatably connected to the connecting seat 281. A second torsion spring 284 is connected between the cone piece 282 and the connecting seat 281. A resistance frame 283 is fixed to the cone piece 282, and the resistance frame 283 is in resistance with the second nozzle 29.

[0041] When the intestinal lesion is large and the drug delivery range of the applicator needs to be increased, refer to Figure 1-Figure 5 , remove the first soft tentacle 17, and thread the second nozzle 29 onto one end of the second hollow rod 2013, and at the same time, thread the second nozzle 29 onto one end of the injection barrel 1 through the connecting seat 281 in the second soft tentacle head 28. When in use, when the piston piece 202 moves, it can drive the first hollow rod 2011 and the second hollow rod 2013 to move synchronously, so as to achieve the purpose of horizontal movement of the second nozzle 29. At the same time, a part of the liquid medicine in the dosing tube 2 flows into the second nozzle 29 through the first hollow rod 2011 and the second hollow rod 2013. When the elastic force of the seventh spring 2014 is greater than the elastic force of the second torsion spring 284, the second nozzle 29 can conflict with the abutment frame 283 on the cone piece 282 during the movement, so as to prompt the cone piece 282 to rotate on the connecting seat 281, open the second soft tentacle head 28, and the second torsion spring 284 accumulates force, so that the second nozzle 29 can be extended, and the intestine can be sprayed axially, thereby increasing the spraying range and further improving the medicine application effect.

[0042] A silicone material of a certain thickness is provided on the surface of the cone piece 282 in the second soft tentacle 28, which can improve the softness of the cone piece 282 and reduce friction when it contacts the surface of the intestine.

[0043] Example 4, please refer to Figures 1 to 9 , a method for using a radial applicator for anorectal surgery, comprising the following specific steps: Step 1: Insert the drug delivery device. Connect the drug delivery tube 2 of the drug delivery device to the injection pipe of the drug delivery pump, and then disinfect the entire drug delivery device. Hold one end of the drug delivery tube 2, aim the other end of the injection barrel 1 at the patient's anus, and slowly insert the injection barrel 1 together with the sealing barrel 6 into the anus to ensure that the insertion depth is appropriate; Step 2, drug injection expansion treatment, the drug liquid delivery pump injects the drug liquid into the drug delivery tube 2, a small part of the drug liquid flows into the second expansion ring 15 on the drug injection barrel 1 through the rotary valve 16, prompting the second expansion ring 15 to expand, and improve the tightness of one end of the drug delivery device and the intestinal surface, avoiding the drug from overflowing from the anus when applying the drug, and at the same time, the remaining drug liquid flows into the deep of the drug delivery tube 2, pushing the piston assembly to move, prompting the piston assembly to compress the air, and the compressed air flows into the first expansion ring 9 at the other end of the drug injection barrel 1, prompting the first expansion ring 9 to expand, promoting the tightness of the other end of the drug delivery device and the intestinal surface, avoiding the drug from overflowing to the deep intestine when applying the drug, and prompting the drug liquid to act on the intestinal lesions. At the same time, after the expansion, the first expansion ring 9 and the second expansion ring 15 increase the gap between the drug injection barrel 1 and the intestine; Step 3, radial drug application treatment, the first expansion ring 9 contacts with the contact component during the expansion process, and during the contact process, the contact component can push the contact seesaw 12 to rotate in the drug injection barrel 1 when it moves horizontally, causing the contact seesaw 12 to deflect, and one end of the contact seesaw 12 contacts the first contact strip 10 on the sealing barrel 6, thereby pushing the sealing barrel 6 to move horizontally on the drug injection barrel 1, causing the second circular hole 30 on the sealing barrel 6 to coincide with the center of the first circular hole 3 on the drug injection barrel 1, facilitating the exposure of the first nozzle 5, and the drug solution flows through the drug delivery tube 2 through the drug outlet 4 and is transported to the first nozzle 5, and the drug solution is evenly sprayed onto the intestinal lesion through the gap between the drug injection barrel 1 and the intestine, and radial drug application treatment is performed; Step 4: The nozzle extends to spray medicine. The resistance component continues to move after contacting with the resistance seesaw 12, and can achieve the purpose of contacting with the second resistance wedge 21 on the first nozzle 5, so that the second resistance wedge 21 drives the first nozzle 5 to slide on the medicine outlet 4. The first nozzles 5 move synchronously with the cooperation of the strip connecting block 19, and extend after passing through the first circular hole 3 and the second circular hole 30, thereby reducing the obstruction of the first circular hole 3 and the second circular hole 30 to the first nozzle 5, and further improving the effect of applying medicine to the intestinal lesions. Step 5: Expand the spraying range of the liquid medicine. The second nozzle 29 is threadedly connected to the hollow telescopic piston rod 201 in the piston assembly. At the same time, the second soft tentacle head 28 is threadedly connected to the injection barrel 1. As the injection barrel 1 is synchronously inserted into the anus, after the liquid medicine is injected, the piston assembly is pushed by the liquid medicine, which prompts the hollow telescopic piston rod 201 to drive the second nozzle 29 to move horizontally. During the movement of the second nozzle 29, it conflicts with the abutment frame 283 fixed on the cone piece 282, prompting the cone piece 282 to deflect on the connecting seat 281, making it convenient to open the second soft tentacle head 28, prompting the second nozzle 29 to extend, and the liquid medicine flows into the second nozzle 29 through the hollow telescopic piston rod 201 for spraying, which can spray the intestinal tract axially and increase the spraying range; Step six, detachment of the drug delivery device. After the drug application is completed, connect the drug delivery tube 2 to the suction pipe of the drug delivery pump to suck out the residual drug in the drug delivery tube 2, and reset the piston assembly and the resistance assembly. The first expansion ring 9 is resisted by the resistance assembly and received in the first slot 8. At the same time, the second expansion ring 15 is reset under the resistance of the limiting wedge block 151. After the drug adsorption is completed, hold one end of the drug delivery tube 2 and pull out the drug delivery device.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A radial drug delivery device for anorectal surgery, comprising a drug injection cartridge (1), characterized in that: A drug delivery tube (2) is fixed in the drug injection barrel (1), a plurality of first circular holes (3) are provided on the circumferential surface of the drug injection barrel (1), a plurality of drug delivery ports (4) are provided on the drug delivery tube (2) at equal intervals, a first nozzle (5) is provided in the first circular hole (3), the first nozzle (5) is slidably connected to the drug delivery port (4), a sealing barrel (6) is slidably connected to the drug injection barrel (1), one end of the sealing barrel (6) is elastically connected to the drug injection barrel (1) via a first spring (7), and a plurality of second circular holes (30) are provided on the sealing barrel (6); A first clamping groove (8) is provided on one side of the drug injection barrel (1), a first expansion ring (9) is provided in the first clamping groove (8), a piston assembly for inflating the first expansion ring (9) is provided on the drug administration tube (2), a plurality of resistance assemblies are provided in the first clamping groove (8), the resistance assemblies are in resistance with the first expansion ring (9), the resistance assemblies are slidably connected to the drug injection barrel (1), a first resistance strip (10) is fixed on the sealing barrel (6), the first resistance strip (10) is slidably connected to the drug injection barrel (1), a mounting frame (11) is fixed on the drug injection barrel (1), a resistance seesaw (12) is provided between the first resistance strip (10) and the resistance assembly, the resistance seesaw (12) is elastically connected to the mounting frame (11) via a first torsion spring (13).

2. The radial applicator for anorectal surgery according to claim 1, characterized in that: A second clamping groove (14) is provided at the other end of the drug injection barrel (1), a hollow ring block (141) is provided on one side of the second clamping groove (14), the hollow ring block (141) is fixed on the drug injection barrel (1), a second expansion ring (15) is provided in the second clamping groove (14), a rotary valve (16) is fixed in the hollow ring block (141), a water inlet of the rotary valve (16) is connected to the drug administration tube (2), and a water outlet of the rotary valve (16) is connected to the second expansion ring (15), a plurality of limiting wedge blocks (151) are provided in the second clamping groove (14), and the limiting wedge blocks (151) are elastically connected to the hollow ring block (141) via a second spring (152).

3. The radial applicator for anorectal surgery according to claim 2, characterized in that: The piston assembly comprises a hollow telescopic piston rod (201), the hollow telescopic piston rod (201) being slidably connected to the drug injection barrel (1), a piston plate (202) being slidably connected inside the drug administration tube (2), the piston plate (202) being fixedly connected to one end of the hollow telescopic piston rod (201), and the piston plate (202) being elastically connected to the drug injection barrel (1) via a third spring (203).

4. The radial applicator for anorectal surgery according to claim 3, characterized in that: The resistance assembly comprises a resistance rod (81), wherein the resistance rod (81) is elastically connected to the drug injection barrel (1) via a fourth spring (82), one end of the resistance rod (81) is in resistance with the resistance seesaw (12), and a first resistance wedge (83) is fixed to the other end of the resistance rod (81), and one end of the first resistance wedge (83) is in resistance with the first expansion ring (9).

5. The radial applicator for anorectal surgery according to claim 4, characterized in that: A first soft tentacle (17) is provided at one end of the drug injection barrel (1), the first soft tentacle (17) being threadedly connected to one end of the drug injection barrel (1) via a first threaded ring (31), and a plug (18) for sealing the hollow telescopic piston rod (201) is provided on the first soft tentacle (17).

6. The radial applicator for anorectal surgery according to claim 5, characterized in that: The first nozzle (5) is provided with a strip-shaped connecting block (19), the strip-shaped connecting block (19) being elastically connected to the drug delivery tube (2) via a fifth spring (20), and a second contact wedge (21) being provided at one end of the contact rod (81), the second contact wedge (21) being fixed on the first nozzle (5).

7. The radial applicator for anorectal surgery according to claim 6, characterized in that: A rack (22) is slidably connected to the hollow ring block (141), a third abutting wedge (23) is fixed to one end of the rack (22), a fourth abutting wedge (24) is fixed to one of the first nozzles (5), the third abutting wedge (23) abuts against the fourth abutting wedge (24), a sixth spring (25) is connected between the rack (22) and the hollow ring block (141), a valve stem (26) is provided on the rotary valve (16), a gear (27) is fixed to the valve stem (26), and the gear (27) and the rack (22) are meshed with each other.

8. The radial applicator for anorectal surgery according to claim 7, characterized in that: The hollow telescopic piston rod (201) comprises a first hollow rod (2011), the first hollow rod (2011) being slidably connected to the drug injection barrel (1), and one end of the first hollow rod (2011) being fixedly connected to the piston plate (202), the other end of the first hollow rod (2011) being slidably connected to a second hollow rod (2013), and a seventh spring (2012) being connected between the first hollow rod (2011) and the second hollow rod (2013).

9. The radial applicator for anorectal surgery according to claim 8, characterized in that: The drug delivery device further comprises a second soft tentacle head (28) and a second nozzle (29), wherein the second nozzle (29) is threadedly connected to the second hollow rod (2013), the second soft tentacle head (28) comprises a connecting seat (281), the connecting seat (281) is threadedly connected to one end of the drug injection barrel (1) via a second threaded ring (32), a cone piece (282) is rotatably connected to the connecting seat (281), a second torsion spring (284) is connected between the cone piece (282) and the connecting seat (281), a contact frame (283) is fixed to the cone piece (282), and the contact frame (283) contacts the second nozzle (29).

10. The method for using the radial applicator for anorectal surgery according to claim 9, characterized in that: The specific steps include: Step 1: Insert the drug delivery device. Connect the drug delivery tube (2) of the drug delivery device to the injection pipe of the drug delivery pump, and then sterilize the entire drug delivery device. Hold one end of the drug delivery tube (2) and align the other end of the drug injection cylinder (1) with the patient's anus. Slowly insert the drug injection cylinder (1) together with the sealing cylinder (6) into the anus, ensuring that the insertion depth is appropriate. Step 2, drug injection expansion treatment, the drug liquid delivery pump injects the drug liquid into the drug delivery tube (2), a small part of the drug liquid flows into the second expansion ring (15) on the drug injection barrel (1) through the rotary valve (16), prompting the second expansion ring (15) to expand, thereby improving the tightness of one end of the drug delivery device and the intestinal surface, and preventing the drug from overflowing from the anus when applying the drug. At the same time, the remaining drug liquid flows into the deep part of the drug delivery tube (2), pushing the piston assembly to move, prompting the piston assembly to compress the air, and the compressed air flows into the first expansion ring (9) at the other end of the drug injection barrel (1), prompting the first expansion ring (9) to expand, promoting the tightness of the other end of the drug delivery device and the intestinal surface, and preventing the drug from overflowing to the deep part of the intestinal when applying the drug, and prompting the drug liquid to act on the intestinal lesions. At the same time, after the first expansion ring (9) and the second expansion ring (15) expand, the gap between the drug injection barrel (1) and the intestinal tract is increased; Step 3, radial drug application treatment, during the expansion process of the first expansion ring (9), the first expansion ring (9) contacts the contact component. During the contact process, the contact component can push the contact seesaw (12) to rotate in the drug injection barrel (1), causing the contact seesaw (12) to deflect. One end of the contact seesaw (12) contacts the first contact strip (10) on the sealing barrel (6), thereby pushing the sealing barrel (6) to move horizontally on the drug injection barrel (1), causing the second circular hole (30) on the sealing barrel (6) to coincide with the center of the first circular hole (3) on the drug injection barrel (1), thereby facilitating the exposure of the first nozzle (5). The drug solution flows through the drug delivery tube (2) through the drug outlet (4) and is transported to the first nozzle (5). The drug solution is evenly sprayed onto the intestinal lesion through the gap between the drug injection barrel (1) and the intestine, thereby performing radial drug application treatment; Step 4: The nozzle extends to spray medicine, and the resistance component continues to move after contacting the resistance seesaw (12), so as to achieve the purpose of contacting the second resistance wedge (21) on the first nozzle (5), so that the second resistance wedge (21) drives the first nozzle (5) to slide on the medicine outlet (4), and a plurality of first nozzles (5) move synchronously with the cooperation of the strip connecting block (19), penetrate the first circular hole (3) and the second circular hole (30), and then extend, so as to reduce the obstruction of the first circular hole (3) and the second circular hole (30) to the first nozzle (5), and further improve the effect of applying medicine to the intestinal lesions; Step 5, expanding the spraying range of the liquid medicine, threading the second nozzle (29) onto the hollow telescopic piston rod (201) in the piston assembly, and threading the second soft tentacle head (28) onto the injection barrel (1). As the injection barrel (1) is synchronously inserted into the anus, after the liquid medicine is injected, the piston assembly is pushed by the liquid medicine, prompting the hollow telescopic piston rod (201) to drive the second nozzle (29) to move horizontally. During the movement of the second nozzle (29), it contacts the abutment frame (283) fixed on the cone sheet (282), causing the cone sheet (282) to deflect on the connecting seat (281), making it easier to open the second soft tentacle head (28), prompting the second nozzle (29) to extend, and the liquid medicine flows into the second nozzle (29) through the hollow telescopic piston rod (201) for spraying, which can spray the intestine axially and increase the spraying range; Step 6: Disengagement of the drug delivery device. After the drug delivery is completed, the drug delivery tube (2) is connected to the suction pipe of the drug delivery pump to suck out the residual drug in the drug delivery tube (2). The piston assembly and the resistance assembly are reset. The first expansion ring (9) is resisted by the resistance assembly and is received in the first slot (8). At the same time, the second expansion ring (15) is reset under the resistance of the limiting wedge block (151). After the drug adsorption is completed, one end of the drug delivery tube (2) is held by hand to pull out the drug delivery device.

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