CN1030432C - Artificial anal pouch and installation method thereof - Google Patents

Abstract

The present invention relates to an original position artificial anus pouch which is an artificial organ. The present invention is a hollow pipe pouch made of medical polymer material and is arranged at the physical position of an anus; the present invention is similar to anatomic structures of an anal pipe and rectal ampulla; the present invention has the functions of contraction, expansion and pressure regulation; the present invention is fixed in a human body and is convenient and reliable. When the present invention is implanted into the human body through an operation, an intestine is pulled downwards to penetrate through a pouch pipe hole, the intestine edge and the skin of the intestine edge are oversewn, and the pouch is fully packed in the human body and below skin; an intestine segment in the pouch gradually reestablishes the basic functions that the physical anus have in the process of feces accumulation and physiological movement of contraction and expansion of defecation.

Description

Artificial anal pouch and installation method thereof

Original position artificial anal pouch of the present invention is a kind of artificial organ, belongs to biomedical engineering field.

Anorectal sufferer such as cancer of anal canal, Low Rectal are commonly encountered diseases, frequently-occurring disease.Operative treatment is the excision diseased region, but can not keep original anorectum usually.It is the anal reconstruction method that extensively adopts both at home and abroad at present that the intestinal outlet of handle postoperative patient places " abdominal part fistulation " art of abdominal part.The abdominal part fistulation brings difficulty and not free on the living conditions, in the action for the patient, has increased physiological and psychological burden.

In recent years, the research that a kind of human anus reproduces, its basic fundamental is: build at the new rectum angle; Inner sphincter reconstruction.Be that colon is pulled down to anal orifice, the colon edge is distinguished and skin wire discontinuous sewing one all anal reconstructions in the former anus excision of perineal position.The defective of abdominal part fistulation has been exempted in this operation, but feces is lacked (one day defecation repeatedly) in the time that " rectum section " is detained, and mostly is loose stool, and anus mouth humidity easily causes diarrhoea or fecal incontinence.So it is also not satisfactory that this " human anus " of pure medical approaches is reconstituted in aspects such as recovering the stool physiological function.

The purpose of this invention is to provide a kind of original position artificial anal pouch of implanting the anus original position, having defecation control function through the anorectal surgical operation.

The basic scheme of original position artificial anal pouch is simulating shape anal canal, ampulla of rectum dissect physiology structure; Make with medical macromolecular materials; Hollow tubular body with shrinkage expansion function.The top of utricule is the hollow-cone body, and the bottom is a hollow round tube body, and both are in conjunction with forming up big and down small hollow tubular body, as shown in Figure 1.Cone tube top one side has a solid zonule, can cut recessed arc notch W(at this solid position and see Fig. 1 and Fig. 2).The utricule inner tubal wall is thin, smooth no concave-convex, and high resilience; Outer tube wall thickness, its outer surface are provided with some annular lip (a) and (b), (c), (d), (e) and (f); Outer wall and inwall enclose part and are blister cavities V.The overhanging flange in the upper end of utricule (a) external diameter is bigger.The a certain flange of utricule outer tube wall is divided into up and down two halves such as flange (e), (f) to it.(e) and be air-gap (f), air gap communicates with blister cavities V, and utricule is before implanting, by this space elder generation filling medium in blister cavities, after two flanges (e) that will separate up and down and (f) glued joint sealing, whole like this integral body has just become to have the hollow tubular body in elastic packing chamber.

Behind patient's anal canal, ampulla of rectum excision, when implanting utricule, utilize the overhanging flange (a) of utricule upper end, utricule is hung on pubis and rumpbone, and made utricule be in former natural anus position.Then a section of intestines (colon) is pulled to the below, passes the utricule endoporus and draw from the lower end, again the intestines port is turned up and with anus outer rim sutured, utricule just all seals in vivo like this.Through a stage, inner newborn muscle growth and utricule outer wall and each ledge surface coincide after the operation, and artificial utricule just is fixed in former anus position in patient's body naturally reliably.

The application characteristic and the advantage of original position artificial anal pouch with above-mentioned basic feature is as follows:

1. utricule is easy to implant and can secure fixation.Be the mechanical fixation of utricule overhanging flange in upper end and pubis, rumpbone on the one hand; Be the identical and obvolvent of the outer surface of newborn muscle and utricule outer tube wall on the other hand.Making utricule is main become the muscle obvolvent step by step and be fixed as the master by the mechanical fixation of operation after-stage.The artificial utricule of muscle obvolvent makes it to be fixed in reliably naturally former anus position in patient's body.

2. the blister cavities internal pressure is adjustable, and utricule is suitable for the patient of Different Individual feature.Through inflation, topping up or fill with behind other medium and sealed, purpose is to make to have certain pressure in the blister cavities to blister cavities, with the elasticity of improving, regulating the utricule inner tubal wall, is suitable for the patient of different body constitution, all ages and classes before implanting.Easily realize the adjustment of the different sizes of pipe body section (simulation " anal canal ") closing presure, bring the convenience in the use.

3. realize the reconstruction of nature anus anatomical structure and function.The utricule inner tubal wall is thin, smooth high resilience again, and its underpart is a tubular, top is conical, is simulating the physiological make-up of human body anal canal and ampulla of rectum.Be in the intravital intestines section of capsule, its top is positioned at cone tube, is suitable for feces to gather, and also is suitable for feces to move downward; Its underpart is wrapped by the pipe body section of utricule when defecation not, is subjected to the effect of blister cavities pressure medium, is in the nature closure state, thus also can not leak and leak just during none level pressure power of utricule section enteral, but can discharge enteral gas.When the needs defecation, the coordination that intestines wriggling and diaphragm press down will produce very big downward actuating pressure, and the feces pressurized moves downward.Utricule pipe body section and institute thereof enclose intestines, at enteral pressure during greater than utricule pipe body section closing presure, and radial dilatation passively, feces excretes, after this enteral pressure reduces, and utricule pipe section and institute thereof enclose the corresponding contraction of intestines immediately, get back to the nature closure state.

Be positioned at the intravital intestines section of capsule, in the accumulation of passive feces and expansion, the defecation physiology motion of shrinking, obtain taking exercise, step by step, set up the anatomical structure and the function corresponding of nature anus naturally.

4. utricule structure men and women is suitable for.Utricule cone tube section top one side has a solid zonule, if be used for the male patient, then cuts the following concave indentation of certain altitude thereon.When operation is installed, with breach towards the outside of belly one side.So just avoided of the compressing of the front side of utricule to male's hypogastric region body of prostate.The Different Individual of neglecting greatly of recessed arc notch is determined in the anatomical structure correction of operative site.If be used for female patient, then can avoid cutting above-mentioned recessed arc notch.

This shows to have the enforcement and the clinical practice of the original position artificial anal pouch of above-mentioned structure and functional character, will fill up a blank, will be subjected to especially patient's welcome of people for artificial organ and anorectal surgery.

Description of drawings:

Fig. 1, original position artificial anal pouch structure chart of the present invention;

The side sectional view of Fig. 2, Fig. 1.

Claims (3)

1, a kind of original position artificial anal pouch, feature of the present invention are that outer tube wall (1) and the inner tubal wall (2) that utricule is made by medical macromolecular materials constitutes, and the upper and lower side of inside and outside tube wall links to each other respectively and forms the hollow tubular utricule; Utricule inner tubal wall interior shape is that top is the hollow-cone bodily form, and the bottom is the hollow circuit cylinder bodily form, connects for rounding off between two parts up and down; The utricule inner tubal wall is thin, smooth no concave-convex, is elasticity; The outer tube wall thickness is rigidity, and its outer surface is provided with the fixture of utricule, i.e. annular flange (a) and (b), (c), (d), (e) and (f), and the overhanging flange in upper end (a) external diameter is bigger; Form between inner tubal wall and the outer tube wall have certain intervals in the blister cavities (V) of medium is arranged; Utricule implants, intestines (colon) are in the utricule for one section, its top is positioned at the utricule conical tube, and when feces gathered, Taper Pipe body inwall pressurized was to blister cavities (V) radial dilatation, its underpart is positioned at the utricule cylindrical tube, be subjected to the effect of blister cavities (V) pressure medium when defecation not, intestines are wrapped by pipe body section, are in the nature closure state, can not leak and leak just when making none level pressure power of utricule section enteral, but can discharge enteral gas; When the needs defecation, because the coordination that intestines wriggling and human body diaphragm press down produces big active force downwards, feces is moved downward, and utricule pipe body section and institute thereof enclose intestines, at enteral pressure during greater than utricule pipe body section closing presure, be radially expanded, compression blister cavities bottom excretes feces, and after this enteral pressure reduces, under the effect of blister cavities pressure medium, make blister cavities (V) expansion immediately and make utricule pipe section and institute thereof enclose that intestines are corresponding to be compressed, get back to the nature closure state.

2, people's anus utricule according to claim 1 is characterized in that having concave indentation (W) on the one side solid of conical tube section top.

3, artificial anal pouch according to claim 1 and 2, it is characterized in that on the outer tube wall (1) annular flange (e) and (f) between have the space to communicate with blister cavities (V), after blister cavities (V) is advanced medium charge in this space with the sealing of this space.

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