CN112843444B

CN112843444B - Anorectal administration device

Info

Publication number: CN112843444B
Application number: CN202011018216.2A
Authority: CN
Inventors: 赵兵
Original assignee: Affiliated Hospital of North Sichuan Medical College
Current assignee: Affiliated Hospital of North Sichuan Medical College
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2022-06-28
Anticipated expiration: 2040-09-24
Also published as: CN112843444A

Abstract

The invention provides an anorectal administration device, wherein the front section of an administration tube of the anorectal administration device is inserted into the anorectal, the bottom of an administration channel of the front section is closed, and a medicine outlet hole is formed in the side wall of the administration channel; the outer part of the front section is fixedly covered with an elastic bullet-shaped hollow elastic sleeve, one end of the elastic sleeve, which is far away from the warhead, is fixedly sleeved on the surface of the front section, the warhead direction of the elastic sleeve is sleeved at the free end of the front section, and the free end is integrally embedded into the side wall in the center of the warhead of the elastic sleeve; elastic sleeve faces towards go out medicine hole one side integral type ground, bulge ground have a cartridge case on the lateral wall in medicine hole, the one end that goes out the cartridge case is connected on going out the medicine hole, the other end runs through elastic sleeve's lateral wall and is used for contacting with the anus intestines inner wall, the elastic sleeve with give the annular expansion chamber that links to each other with aerating device that forms between the pencil anterior segment and hold the air. The anorectal administration device can accurately realize administration to anorectal affected parts, reduce liquid medicine waste and improve curative effect.

Description

Anorectal administration device

Technical Field

The invention relates to the technical field of anorectal treatment, in particular to an anorectal administration device.

Background

In the anorectal treatment, the affected part on the inner wall of the anorectal is often required to be directly administrated, and liquid medicine is fed. At present, medical personnel utilize current administrator disect insertion to carry out extensive formula in the anus intestines and administrate medicine usually, this kind of administrator only has a mouth of dosing near tip, so as to arrive at the liquid medicine that flows out behind the established degree of depth, however, the liquid medicine of outflow can be in the scattered flow of anus intestines inner wall, all there is the liquid medicine to flow through together with healthy position, lead to the liquid medicine can not concentrate on the affected part, can not supply the abundant absorption in affected part, both wasted the liquid medicine, also greatly reduced the accuracy that the affected part received the dose, thereby influence treatment, need further improvement urgently.

Disclosure of Invention

The invention aims to solve the problems that when the medicine is administered to an anorectal affected part, liquid medicine is wasted, the administration precision of the affected part is not high, and the treatment effect is not good in the prior art.

In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

an anorectal drug delivery device comprises a drug delivery tube, wherein a drug delivery channel through which liquid medicine flows is arranged in the drug delivery tube, the drug delivery tube is divided into a front section and a rear section, the front section of the drug delivery tube is used for being inserted into anorectum, the bottom of the drug delivery channel of the front section is closed, a drug outlet hole is formed in the side wall of the drug delivery channel, and the outer surface of the rear section of the drug delivery tube is provided with a plurality of scale marks along the length direction;

The outside of the front section is fixedly covered with an elastic bullet-shaped hollow elastic sleeve, one end of the elastic sleeve departing from the warhead is fixedly sleeved on the surface of the front section, the direction of the warhead of the elastic sleeve is tightly sleeved at the free end of the front section, and the free end is integrally embedded into the side wall of the center of one end of the warhead departing from the warhead; the side wall of the elastic sleeve facing the medicine outlet hole is provided with a medicine outlet cylinder in an integrated and protruding manner towards one side of the medicine outlet hole, one end of the medicine outlet cylinder is connected to the medicine outlet hole, the other end of the medicine outlet cylinder penetrates through the side wall of the elastic sleeve and is used for contacting with the inner wall of the anorectum and feeding medicine, and an annular expansion cavity for containing air is formed between the elastic sleeve and the front section of the medicine feeding pipe;

the air pipe is laid in the administration pipe along the length direction of the administration pipe, one end of the air pipe extends into the annular expansion cavity, and the other end of the air pipe extends out of the rear section of the administration pipe and then is connected with the inflating device.

In the above structure, the invention further provides that the axis of the drug outlet tube and the axis of the elastic sleeve form an obtuse angle, the bottom of the administration channel of the front section of the administration tube is in the shape of an upwardly convex spherical surface, the drug outlet hole is located on the side wall around the spherical surface at the bottom of the front section, and the spherical surface participates in forming a part of the hole wall of the drug outlet hole.

On the other hand, the thickness of the cylinder wall of the medicine outlet cylinder is gradually reduced from the two ends to the center, and the cylinder wall at one end facing the outside of the elastic sleeve is thinner than the cylinder wall connected with the medicine outlet hole. On the basis, the outer surface of the cylinder wall of the medicine outlet cylinder is inwards sunken, and the inner surface of the cylinder wall is outwards sunken to form a hyperbolic-like cross section profile. And furthermore, a straight line which passes through the top point of the spherical surface at the bottom of the front section and is vertical to the axis of the elastic sleeve intersects with the inner surface of the cylinder wall at the upper part. More specifically, the longitudinal section of the intersecting part of the annular expansion cavity and the medicine discharging barrel is in a knife-shaped structure, and the knife edge is a contour curve of the longitudinally-cut outer wall of the medicine discharging barrel.

Still give another kind of concrete structure to the connecting portion position that goes out cartridge case and elastic sleeve: the medicine outlet cylinder is of a cylindrical tubular structure, a port of the medicine outlet cylinder facing the outer side of the elastic sleeve is in a trumpet shape, the side wall of the elastic sleeve around the trumpet is thinner than the other side walls to form an annular deformation gasket, and the deformation gasket expands when the annular expansion cavity is filled with a rated amount of air to bulge towards the outer side so as to be further in extrusion contact with the inner wall of the anorectal.

For the inflation device, manual inflation is preferred, so that the pressure intensity can be sensed in real time, and safety and reliability are realized. Therefore, the inflating device is designed according to the following structure: the inflatable bag comprises a compressible hollow bag body, wherein a pressurizing pipe embedded into the bag body is arranged at the front end of the bag body, and the pressurizing pipe and the bag body can be integrally formed. An arc-shaped chute is formed in the side of the front end of the capsule body, the pressurizing pipe penetrates through the arc-shaped chute, a strip-shaped sliding plate which is matched with the arc-shaped chute and is also arc-shaped is arranged in the arc-shaped chute in a sliding fit manner, a through hole is formed in the sliding plate, one end of the sliding plate is connected with an arc-shaped spring in the arc-shaped chute, the other end of the sliding plate is connected with a rotating rod which extends into the capsule body, the rotating rod is hinged to a hinged shaft in the capsule body, the hinged shaft is located at the center of the sliding plate, one end, far away from the sliding plate, of the rotating rod is hinged to a vertically arranged pressing rod, one end of the pressing rod is hinged to the rotating rod, the other end of the pressing rod penetrates through the capsule wall and then extends out of the capsule body, and the pressing rod and the capsule body are in sliding, sealing fit; the depression bar passes through reset spring to be connected on the utricule inner wall in order to realize that the depression bar resets under the non-inflation state, or/and through torsional spring connection between dwang and the articulated shaft, this torsional spring orders about the dwang under the non-inflation state and resets.

Compared with the prior art, the invention has the following beneficial effects: the invention adopts a front-rear two-section administration tube for administration, the front section is mainly used for being inserted into the anorectum for administration, and the rear section with scales is mainly used for checking the approximate depth of insertion so as to approach the affected part of the anorectum as much as possible. The other key effect of the invention is that the elastic sleeve is sleeved outside the front section, the elastic sleeve in a bullet shape is convenient to insert into the anorectal intestine and can be well coated on the surface of the front section of the drug delivery tube to form an annular expansion cavity with the surface of the front section of the drug delivery tube to fill air so as to realize expansion of the elastic sleeve, so that the elastic sleeve inserted into the anorectal intestine along with the front section of the drug delivery tube can be fully contacted with the inner wall of the anorectal intestine, the elastic sleeve can be made of skin-friendly materials such as silica gel, and the elastic sleeve is safe and environment-friendly, most importantly, the elastic sleeve can be well matched with the fluctuated surface of the inner wall of the anorectal intestine when expanding, and can be adaptively attached to various parts of the inner wall of the anorectal intestine along with increase of pressure intensity, thereby ensuring that the drug delivery tube is stable and reliable after being inserted into the anorectal intestine without displacement, preventing liquid medicine discharged from flowing away along a gap between the elastic sleeve and the inner wall of the anorectal intestine, and better realizing sealing of the contact joint part of the elastic sleeve and the inner wall of the anorectal intestine, the liquid medicine is prevented from being lost to the healthy part, the liquid medicine is ensured to intensively flow into the affected part of the anus and the intestine, the fast and accurate administration of the affected part is realized, and the waste of the liquid medicine is reduced.

The effects of the present invention include, but are not limited to, the above description of the effects, and other advantageous effects can be unambiguously inferred by those skilled in the art from the technical solutions of the present invention, and the applicant does not describe in detail.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of the area I in FIG. 1;

FIG. 3 is an enlarged view of another structure of the area I in FIG. 1;

FIG. 4 is a schematic view of an inflator;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is an enlarged structural view of a one-way intake part in fig. 4.

Wherein, anterior segment 1, go out medicine hole 101, bottom sphere 102, posterior segment 2, elastic sleeve 3, warhead 301, T type bellying 302, enclose fender 303, go out medicine section of thick bamboo 304, deformation packing ring 305, annular inflation chamber 4, trachea 5, transfer line 6, utricule 7, arc spout 701, through hole 702, pressurize pipe 8, slide 9, arc spring 10, dwang 11, articulated shaft 12, depression bar 13, reset spring 14, torsional spring 15, normal anus intestines inner wall 16, anus intestines affected part 17, actuating lever 18, flashboard 19, advance pressure pipe 20, guide arm 21, shore spring 22, dead lever 23, initiative board 24.

Detailed Description

In order to make the technical solution and the advantages of the present invention more clearly understood by those skilled in the art, the present invention is further illustrated in the following drawings and detailed description, but the detailed description is not limited to the following specific structures:

As shown in figure 1, the invention provides an anorectal administration device, which comprises an administration tube, wherein an administration channel for liquid medicine to flow through is arranged in the administration tube, the administration tube is divided into a front section 1 and a rear section 2, the front section 1 is used for being inserted into an anorectal, the bottom of the administration channel of the front section 1 is closed, a medicine outlet hole 101 is formed in the side wall of the administration channel, a plurality of scale marks are arranged on the outer surface of the rear section 2 along the length direction to mark the length of the administration tube inserted into the anorectal, the rear section 2 is preferably made of soft skin-friendly materials, and the surface of the rear section 2 is preferably smooth as much as possible so as to be conveniently inserted.

In the administration tube of the present embodiment, the outer parts of the first stage 1 are fixedly covered with a bullet-shaped hollow elastic sleeve 3 having elasticity, i.e., the front end is tapered and the rear end is cylindrical, and the surface of the elastic sleeve 3 is preferably slightly smooth. One end of the elastic sleeve 3 departing from the bullet 301 is fixedly sleeved on the surface of the front section 1, the direction of the bullet 301 of the elastic sleeve 3 is tightly sleeved at the free end of the front section 1, and the free end is integrally embedded into the side wall of the center of one end of the bullet 301 departing from the bullet tip. The side wall of the elastic sleeve 3 facing the medicine outlet 101 and facing the medicine outlet 101 is provided with a medicine outlet cylinder 304 integrally and convexly towards the medicine outlet 101, namely, the medicine outlet cylinder 304 can be integrally formed by adopting the same material. One end of the medicine outlet tube 304 is connected to the medicine outlet hole 101, the other end of the medicine outlet tube penetrates through the side wall of the elastic sleeve 3 and is used for contacting with the inner wall of the anorectal intestine and feeding medicine, and an annular expansion cavity 4 for containing air is formed between the elastic sleeve 3 and the front section 1 of the medicine feeding tube so as to enable the side wall of the elastic sleeve 3 to be capable of expanding radially as much as possible. Meanwhile, in order to supply compressed air and liquid medicine, the anorectal administration device of the embodiment further comprises an air tube 5 for conveying compressed air, the air tube 5 is laid in the administration tube along the length direction of the administration tube, one end of the air tube 5 extends into the annular expansion cavity 4, and the other end of the air tube extends out of the rear section 2 of the administration tube and then is connected with an inflation device, preferably, the inflation device is an air bag or an air pump for manually pressing and inflating, so that the inflation can be timely pressed. In the above embodiment, the air and the chemical liquid may be supplied by other means for supplying the chemical liquid and the compressed air, but it is preferable to integrate them in the wall of the administration tube in consideration of the convenience of use and storage due to the concentrated routing of the administration tube.

In the above structure of this embodiment, in order to prevent the flowing-out liquid medicine from flowing back, the axis of the medicine outlet tube 304 and the axis of the elastic sleeve 3 form an obtuse angle, and the bottom of the administration channel of the front section 1 of the administration tube is in an upward convex spherical shape, so on one hand, after the patient is inserted into the administration tube in the prone position, the medicine outlet tube 304 will not flow back into the administration channel immediately due to the inclined arrangement, so as to provide time for the affected part to absorb; on the other hand, in some special administration occasions, if the medicine flow is large, the medicine liquid can be conveniently distributed and shunted when entering the bottom end of the administration channel, and the centralized flushing splash and the medicine liquid reflux after the part caused by the splash is combined with the affected part are relieved. In addition, the medicine outlet hole 101 is located on the side wall around the bottom spherical surface 102 of the front section 1, and the spherical surface participates in forming a part of the hole wall of the medicine outlet hole 101, and the design mainly considers that the medicine liquid flows out of the medicine feeding channel as much as possible on the basis of relieving the concentrated scouring splashing, so that the waste of medicine liquid deposition is reduced, and the accuracy of the medicine feeding amount is ensured.

In order to avoid the liquid medicine from being scattered to the parts other than the affected part after flowing out from the medicine output barrel 304, it is preferable to make the elastic expansion degree of the outlet end of the medicine output barrel 304 larger than the other parts, i.e. relatively speaking, the surface of the elastic sleeve 3 at the medicine output barrel 304 is bulged higher to be in closer contact with the periphery of the affected part, so as to completely surround the affected part inside the outlet end of the medicine output barrel 304. Specifically, the thickness of the cartridge outlet 304 gradually decreases from the two ends to the center, and the thickness of the cartridge outlet towards the end outside the elastic sleeve 3 is thinner than the cartridge outlet connected to the medicine outlet 101. On the basis, the outer surface of the wall of the cartridge 304 is concave inwards, and the inner surface of the wall is concave outwards, so as to form a hyperbolic-like cross-sectional profile, which is transformed into an arc-shaped curve, i.e. the radii are R and R respectively. Thus, when the annular expansion cavity 4 expands, the expansion deformation of the medicine cylinder 304 is inevitably larger, and the medicine cylinder is contacted with the healthy inner wall surface around the affected part of the anorectal inner wall more closely. And furthermore, as shown in fig. 2, a straight line passing through the vertex Z of the bottom spherical surface 102 of the front section 1 and perpendicular to the axis of the elastic sleeve 3 intersects with the inner surface of the cylinder wall at the upper part; this structure mainly is that the liquid medicine level that strikes the production when gushing into the bottom surface of administering the passageway in order to the liquid medicine splashes the in-process and can not directly squirt to the affected part, but is blocked, the buffering by crooked arc section of thick bamboo wall, then on getting into the sunken arc section of thick bamboo wall of below, flows in the affected part steadily, realizes mildly dosing, and is particularly strong to the property of a medicine, needs the occasion of progressively gently dosing. In order to realize that the surface of the elastic sleeve 3 at the position of the medicine cylinder 304 is more bulged, namely is more sensitive to pressure change, the longitudinal section of the intersected part of the annular expansion cavity 4 and the medicine discharge cylinder 304 is of a knife-shaped structure, and the knife edge is a contour curve of the outer wall of the medicine discharge cylinder 304 after longitudinal cutting, so that deformation and expansion can be timely realized when air is charged, the liquid medicine is gradually squeezed into an affected part, the tight fit with the inner wall of the anorectum is realized, and the medicine is intensively supplied.

To achieve the above effect, the present embodiment also provides another specific structure for the connection portion between the medicine outlet cylinder 304 and the elastic sleeve 3: that is, in the manufacturing process, as shown in fig. 3, the drug output cartridge 304 is a cylindrical tubular structure, where the wall of the cartridge can be made thicker, the end of the tube facing the outside of the elastic sheath 3 is flared, and the side wall of the elastic sheath 3 around the flare is thinner than the other side walls, so as to form an annular deformation gasket 305, and the deformation gasket 305 expands to bulge outwards when the annular expansion cavity 4 is filled with a rated amount of air, so as to further press and contact the inner wall of the anus and intestine. When the structure is filled with air, the elastic sleeve 3 expands and deforms, and the deformation gasket 305 firstly contacts with the inner wall of the anorectal to lock the administration range; that is, in the state of not being inserted into the anorectal tract, after expansion, the peak of the bulged portion of the deformable washer 305 and the remaining surface of the elastic sleeve 3 around the peak have a height difference of D > 0, so that when insertion is performed, the deformable washer 305 is firstly contacted with the inner wall of the anorectal tract to lock the administration range, and is firmly fixed in the anorectal tract with the remaining surface of the elastic sleeve 3 also in close contact with the inner wall of the anorectal tract, and at the same time, the medicinal liquid is prevented from scattering to a part other than the affected part, and the administration amount is most accurate in such a structure, and the medicinal liquid is least likely to flow out to a part other than the outlet of the drug cartridge 304.

In addition, in this embodiment, it is preferable that the inflator is manually inflated to sense the pressure in real time, which is safe and reliable, and if an automatic inflation device is used, it is difficult to sense the real-time pressure in person, and a danger is likely to occur when the inflator malfunctions. Therefore, the aerating device of the invention is designed according to the following structure, and a purely manual aerating device can be obtained to match the aeration of the administration tube. As shown in fig. 2-5, which includes a compressible hollow bladder 7, optionally formed of a resilient material. The front end of the capsule body 7 is provided with a pressure pipe 8 embedded in the capsule body 7, and the pressure pipe 8 can be integrally formed with the capsule body 7. An arc-shaped chute 701 is formed in the side of the front end of the capsule body 7, the pressurizing pipe 8 penetrates through the arc-shaped chute 701, a strip-shaped sliding plate 9 which is matched with the arc-shaped chute 701 and is in sliding fit with the arc-shaped chute 701 is arranged in the arc-shaped chute 701, a through hole 702 is formed in the sliding plate 9, one end of the sliding plate 9 is connected with an arc-shaped spring 10 in the arc-shaped chute 701, the other end of the sliding plate is connected with a rotating rod 11 which extends into the capsule body 7, the rotating rod 11 is hinged to a hinged shaft 12 in the capsule body 7, the hinged shaft 12 is located at the center of the sliding plate 9, one end, away from the sliding plate 9, of the rotating rod 11 is hinged to a vertically arranged pressing rod 13, one end of the pressing rod 13 is hinged to the rotating rod 11, the other end of the pressing rod passes through the capsule wall and extends out of the capsule body 7, and the pressing rod 13 is in sliding sealing fit with the capsule body 7; the compression bar 13 is connected to the inner wall of the capsule body 7 through a return spring 14 to realize the return of the compression bar 13 in a non-inflation state, or/and the rotating rod 11 is connected with the hinge shaft 12 through a torsion spring 15, the torsion spring 15 drives the rotating rod 11 in the non-working state to return to drive the sliding plate 9 to cut off the air outlet channel in the inflation pipe 8, namely, the torsion spring 15 and the return spring 14 can be selected optionally or simultaneously. When in use, the bag body 7 is filled with rated compressed air in advance, and the bag body 7 is provided with air inflation holes such as basketball air inflation holes, which are not described in detail herein. In addition, it can also be provided that the bag body is connected with a connecting hose (not shown in the figure), the connecting hose is communicated with a low-pressure air source through a leather hose (not shown in the figure), the leather hose is provided with a switch valve (not shown in the figure) so as to inflate the bag body under the condition of having a compressed air source, the bag body at the moment is equivalent to a manual switch to control external deflation, and the air output is mainly controlled on the premise of realizing the actual pressure sensing of the body. During operation, medical personnel can hold the bag body 7 with one hand or both hands, press the pressure cap on the top of the pressure lever 13 with the thumb, press the ejector rod downwards, the ejector rod drives the rotating rod 11 to do lever motion, because the articulated shaft 12 is positioned at the center of a circle of the sliding plate 9, and the articulated shaft and the sliding plate are concentric, when the sliding plate 9 rotates around the center of a circle to the process that the through hole 702 of the sliding plate and the pipe hole of the pressurizing pipe 8 are overlapped in a crossed manner, the outward inflation can be realized, and the pressurizing pipe 8 is connected with the air pipe 5. It should be further noted that, in this embodiment, it is also important that the size difference between the through hole 702 of the sliding plate 9 and the pipe hole of the charging pipe 8 is as large as possible, because it is ensured that the sliding plate 9 moves to have the through hole 702 in cross communication with the pipe hole of the charging pipe 8 for a longer time so as to be fully charged through the charging pipe 8. In the simplified schematic diagram of fig. 5, the size difference between the through hole 702 and the tube hole of the pressure tube 8 is drawn to be small, and in actual manufacturing, for example, the through hole 702 may be preferably processed into an arc-shaped strip hole structure in accordance with the bending direction of the sliding plate 9, so as to adapt to the length direction (bending direction) of the sliding plate 9 on the one hand, and greatly increase the time for the through hole 702 to be communicated with the tube hole of the pressure tube 8 when the sliding plate 9 slides, thereby ensuring that the pressure tube 8 provides sufficient inflation air pressure for medical instruments such as external anorectal administration devices.

Of course, the structure for inflating the bladder 7 may be designed as follows: the one-way air inlet component is additionally arranged at the rear end of the capsule body 7 so as to realize air supply and air storage of the capsule body 7 at any time, and comprises a driving plate 24, a driving rod 18, a gate plate 19, a guide rod 21, a jacking spring 22, a fixed rod 23 and an inlet pressure pipe 20, wherein the inlet pressure pipe 20 is embedded into the rear end of the capsule body 7 in a penetrating manner, and the driving plate 24 is fixedly connected to one side of the rotating rod 11 facing the rear end of the capsule body 7. One end of the driving rod 18 keeps smooth contact with the driving plate 24, the other end of the driving rod is connected with the gate plate 19, one end of the gate plate 19, which is far away from the driving rod 18, is provided with a pair of guide rods 21 which are arranged at intervals and in parallel, the two guide rods 21 are respectively inserted into the pipe wall of the pressure inlet pipe 20 and can freely slide in the pipe wall, the top bracing spring 22 is further arranged between the two guide rods 21, one end of the top bracing spring 22 is connected to one end of the gate plate 19, which is far away from the driving rod 18, the other end of the top bracing spring 22 is connected to the fixing rod 23 fixedly connected into the pressure inlet pipe 20, and the top bracing spring 22 props the gate plate 19 away from the port of the pressure inlet pipe 20 in a non-working state. When the pressing rod 13 is pressed down to drive the rotating rod 11 to rotate, the driving plate 24 extrudes and pushes the driving rod 18 to move axially, so that the gate plate 19 seals the port of the pressure inlet pipe 20, and meanwhile, the rotating rod 11 drives the sliding plate 9 to open the pressure inlet pipe 8, so as to realize external inflation. When the pressing rod 13 is released, all the components are reset, the flashboard 19 is pushed open by the supporting spring 22, the sliding board 9 seals the pressurizing pipe 8, and external air enters the capsule 7 to realize the air supplement of the capsule 7. Further, if necessary, if the whole body of the bag body 7 is too long, the driving rod 18 may be additionally provided with a plurality of coaxially arranged shaft sleeves (not shown in the figure) for supporting the bag body 7 to slide, the shaft sleeves are fixed on a central axis in the bag body 7 through inner ribs (not shown in the figure), the inner ribs are fixedly connected to the inner wall of the bag body 7, and at this time, the bag body 7 is pressed in a manner that two sides are squashed, so that the bag body is not suitable for being held by hand; of course, the driving rod 18 may be made of a lightweight material and a plastic material with a low density, and the place where the driving rod contacts the driving plate 24 is a smooth metal ball partially embedded in plastic to improve wear resistance and reduce friction, while the guide rod is made of a metal material to maintain the sliding stability of the driving rod 18 in a cantilevered configuration.

In the above structure of the unidirectional air intake component, there is also a key design detail that needs special attention: since the plunger 13 cannot be further depressed after the driving rod 18 pushes the shutter 19 against the end surface of the push pipe 20, the bladder 7 cannot be further compressed by a large amount over the entire surface, and the inflation capacity is linearly decreased. In order to enable the balloon 7 to still have integral overall compression after the driving rod 18 pushes the gate plate 19 to the end surface of the pressure inlet pipe 20, the driving rod 18 is specially processed into an elastic telescopic structure, but the elasticity of the driving rod 18 is lower than that of the supporting spring 22, namely, when the driving plate 24 is in pressing contact with the driving rod 18, the supporting spring 22 is contracted violently, and the driving rod 18 is obviously shortened step by step after the gate plate 19 is pushed to the end surface of the pressure inlet pipe 20 so as to adapt to the further rotation of the driving plate 24, thereby skillfully avoiding the problem that the balloon 7 cannot be pressed down integrally and further. In specific implementation, the driving rod 18 may be made into a two-section socket structure (not shown), one end of one section of the driving rod is inserted into a blind hole axially formed in the end of the other section of the driving rod, and a pressure-bearing spring with elasticity weaker than that of the top-supporting spring 22 is installed in the blind hole, and one end of the one section of the driving rod is connected to the pressure-bearing spring after extending into the blind hole, so that the driving rod is shortened when the pressure-bearing spring is compressed. Of course, the present embodiment may also adopt other structure forms of the elastic telescopic rod in the prior art, which meet the above requirements.

Above this kind of one-way air inlet unit installs back on utricule 7, can be convenient for medical personnel aerify annular inflation chamber 4 at any time, because handheld pressing has the perception effect of cutting one's body, can be convenient for know the pressure size, compare in some constant pressure valves commonly used control compressed air will safe and reliable much more, and simple structure, the volume is less, portable can connect the tip at the back end 2 of dosing pipe through rope etc.. Particularly, when the elastic sleeve is inflated, the inflating pipe of the inflating device is connected with the air pipe of the medicine feeding device, so that the medicine feeding device (the medicine feeding device) which is fixedly inserted into the anorectal intestine is inflated in real time, the size and the amount of the inflated medicine are judged by the pressing difficulty of hands, excessive inflation is avoided as much as possible, particularly, the discomfort of distending pain caused by instantaneous air flowing into the anorectal intestine of a patient can be avoided, the safety and the reliability are realized, and the whole treatment process becomes mild and comfortable. It should be noted that, in some cases, for example, the sliding plate needs to slide along a longer stroke, or the device needs to be inflated outward by a large amount, so that the capsule 7 needs to be compressed greatly, it is preferable that the front end and/or the rear end of the capsule 7 are made of a hard or weak elastic plastic to ensure that the sliding plate 9 can slide stably and freely, or the part of the capsule 7 except for the area where the arc-shaped chute 701 and the pressure inlet tube 20 are located is made of an elastic material, so that the medical staff can hold or press the part between the two ends of the capsule 7 as much as possible during the operation of inflating outward.

When the flexible liquid conveying tube 6 is used for conveying liquid medicine, the rear section 2 comprises a cylindrical section and a conical section, the cylindrical section is coaxially connected with the conical section, the center of the large end of the conical section is coaxially connected with the front section 1, the diameter of the front section 1 is smaller than that of the large end of the conical section, and a gap is formed between the end face of one end of the elastic sleeve 3, which is far away from the bullet 301, and the end face of the large end of the conical section, so that the elastic sleeve 3 is more convenient to fix and install, and particularly, the gap ensures that the elastic sleeve 3 can deform and expand freely.

In addition, the outlet end of the air pipe 5 of this embodiment penetrates through the sidewall of the front section 1 near the frustum cone section and then is communicated with the upper end of the annular expansion cavity 4, so that the air pipe 5 can be connected and laid conveniently. Can also adopt the solid construction that elasticity is weaker than the tip radius of all the other positions with elastic sleeve 3's warhead 301 portion, mainly be convenient for insert the pipe of dosing, make elastic sleeve 3 circumference inflation simultaneously in order hugging closely the anus intestines inner wall as far as possible.

Furthermore, the free end of the front section 1 of the administration tube has an internal expanding groove with a T-shaped cross section, the central inner side wall of the bullet 301 of the elastic sleeve 3 is axially provided with a bolt-shaped T-shaped protrusion 302 facing the internal expanding groove, and the T-shaped protrusion 302 is embedded into the internal expanding groove to fill the internal expanding groove, so as to ensure that the elastic sleeve 3 is well fixed on the front section 1. Preferably, the T-shaped protrusion 302 is coaxially located in an annular enclosure 303 on the central inner side wall of the elastic sleeve 3 at the bullet 301, the outer wall surface of the annular enclosure 303 is an arc surface tangential to the outer surface of the front section 1, so that when the elastic sleeve 3 is fully prevented from expanding, the part of the bullet 301 wrapped at the end of the front section 1 is separated from the elastic sleeve under the impact of the airflow, because if there is an annular step between the enclosure 303 and the outer wall of the front section 1, the airflow easily pushes the elastic sleeve 3 forward to loosen after impacting the step surface. In order to ensure the tight fixation between the elastic sheath 3 and the front section 1, all the contact parts except the matching contact part of the T-shaped convex part 302 on the front section 1 and the elastic sheath 3 are fixedly attached in the contact part where the front section 1 and the elastic sheath 3 are attached to each other, so that the whole administration tube is more firmly connected into a whole.

The anorectal administration device in the above embodiment can be used when the specific position of the affected part of the inner wall of the anorectal is known after the examination, and can also be combined with modern medical imaging equipment to track the position of the administration tube and the orientation of the medicine discharge barrel 304 in real time, so as to ensure that the medicine discharge barrel 304 is right opposite to the affected part. For example, the existing visual medical elements such as endoscopes are used for assistance, the endoscopes are packaged in a sealing mode and then are directly installed in the medicine outlet cylinder 304, the signal wires are led out from the medicine feeding channels, and the medicine feeding effect is better. However, for the superficial anorectal affected part 17, the affected part can be directly visible after the anus is expanded, so that the administration tube is rotated to a required position and then directly plugged into the administration tube, and the affected part can be aligned to accurately administer the medicament. The anorectal administration device provided by the invention can be used by combining with the aid of common technical means in modern medicine by a person skilled in the art to achieve the optimal administration effect, and the embodiment is not described in detail and illustrated.

Finally, the above embodiments are mainly used for explaining the technical solutions of the present invention, but not limited to, the above embodiments are only preferred implementations of the present invention, and it should be clear to those skilled in the art that any modifications, equivalents, improvements, etc. made within the technical principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anorectal administration device characterised by: the drug delivery tube is divided into a front section and a rear section, the front section is inserted into the anorectum, the bottom of the drug delivery channel of the front section is closed, the side wall of the drug delivery channel is provided with a drug outlet hole, and the outer surface of the rear section of the drug delivery tube is provided with a plurality of scale marks along the length direction;

the outer part of the front section is fixedly covered with an elastic bullet-shaped hollow elastic sleeve, one end of the elastic sleeve, which is far away from the warhead, is fixedly sleeved on the surface of the front section, the warhead direction of the elastic sleeve is tightly sleeved at the free end of the front section, and the free end is integrally embedded into the side wall of the center of one end, which is far away from the warhead, of the warhead; the side wall of the elastic sleeve facing the medicine outlet hole is provided with a medicine outlet cylinder in an integrated and protruding manner towards one side of the medicine outlet hole, one end of the medicine outlet cylinder is connected to the medicine outlet hole, the other end of the medicine outlet cylinder penetrates through the side wall of the elastic sleeve and is used for contacting with the inner wall of the anorectum and feeding medicine, and an annular expansion cavity for containing air is formed between the elastic sleeve and the front section of the medicine feeding pipe;

the air pipe is laid in the administration pipe along the length direction of the administration pipe, one end of the air pipe extends into the annular expansion cavity, and the other end of the air pipe extends out of the rear section of the administration pipe and then is connected with the inflating device;

The axis of the medicine outlet cylinder and the axis of the elastic sleeve form an obtuse angle, the bottom of a medicine feeding channel of the front section of the medicine feeding tube is in a spherical shape protruding upwards, the medicine outlet hole is positioned on the side wall around the spherical surface at the bottom of the front section, and the spherical surface participates in forming a part of hole wall of the medicine outlet hole;

the thickness of the cylinder wall of the medicine outlet cylinder is gradually reduced from the two ends to the center, and the cylinder wall at one end facing the outside of the elastic sleeve is thinner than the cylinder wall connected with the medicine outlet hole; the outer surface of the cylinder wall of the medicine outlet cylinder is inwards concave, and the inner surface of the cylinder wall is outwards concave so as to form a hyperbolic-shaped section profile; a straight line which passes through the top point of the spherical surface at the bottom of the front section and is vertical to the axis of the elastic sleeve can be intersected with the inner surface of the upper part of the cylinder wall; the longitudinal section of the part of the annular expansion cavity, which is intersected with the medicine discharging barrel, is of a knife-shaped structure, and the knife edge is a profile curve of the outer wall of the medicine discharging barrel after longitudinal cutting.

2. The anorectal delivery device of claim 1 wherein: the administration channel inlet of the rear section of the administration tube is connected with a flexible infusion tube for conveying liquid medicine, the rear section comprises a cylindrical section and a conical table section, the cylindrical section and the conical table section are coaxially connected, the center of the large end of the conical table section is coaxially connected with the front section, and the diameter of the front section is smaller than that of the large end of the conical table section; and a gap is formed between the end surface of one end of the elastic sleeve, which is far away from the warhead, and the end surface of the large end of the cone frustum section.

3. The anorectal delivery device of claim 2 wherein: the outlet end of the air pipe penetrates through the side wall of the front section close to the conical frustum section and then is communicated with the upper end of the annular expansion cavity.

4. The anorectal delivery device of claim 1 wherein: the elastic head part of the elastic sleeve is of a solid structure with the elasticity weaker than that of the tip part of the other part with a round shape.

5. The anorectal administration device according to claim 1 or 4 wherein: the free end of the front section of the administration tube is provided with an internal expanding groove with a T-shaped cross section, a bolt-shaped T-shaped protruding part is axially arranged on the central inner side wall of the elastic sleeve warhead towards the internal expanding groove, and the T-shaped protruding part is embedded into the internal expanding groove to fill the internal expanding groove.

6. The anorectal delivery device of claim 5 wherein: the T-shaped bulge is coaxially positioned in an annular enclosure on the inner side wall of the center of the elastic sleeve warhead, and the surface of the outer wall of the annular enclosure is an arc-shaped surface tangent to the outer surface of the front section; in the contact parts where the front section is attached to the elastic sleeve, all the contact parts except the T-shaped protruding part matched contact part on the front section and the elastic sleeve are fixedly attached.

7. The anorectal delivery device of claim 1 wherein the device is further characterized by: the inflating device is an air bag inflated by manual pressing.