CN102871773B - Electromagnetic-controlled artificial anal sphincter apparatus based on rectum sensing function - Google Patents
Electromagnetic-controlled artificial anal sphincter apparatus based on rectum sensing function Download PDFInfo
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- CN102871773B CN102871773B CN201210352187.2A CN201210352187A CN102871773B CN 102871773 B CN102871773 B CN 102871773B CN 201210352187 A CN201210352187 A CN 201210352187A CN 102871773 B CN102871773 B CN 102871773B
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- pressing plate
- anal sphincter
- artificial anal
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Abstract
The invention relates to an electromagnetic-controlled artificial anal sphincter apparatus based on a rectum sensing function. The electromagnetic-controlled artificial anal sphincter apparatus comprises a hinge-shaped mechanism which is composed of a first pressing plate and a second pressing plate, a DC (Direct Current) pushing-pulling electromagnet, an arc closing mechanism, a small-size sliding block and two pressure sensors; at a left side, the first pressing plate and the second pressing plate are hinged through a hinge to form a transmission pair; the electromagnet is fixed on the second pressing plate; a pushing rod in the electromagnet penetrates through a small hole of the second pressing plate and is connected with the first pressing plate through the sliding block; the arc closing mechanism is fixed at tail ends of the two pressing plates; meanwhile, two flexible baffle plates are fixed at a left side and a right side of the arc closing mechanism. The electromagnetic-controlled artificial anal sphincter apparatus is arranged in the body of a patient, and a function as an anal sphincter can be played; the pressure sensor is used for sensing pressure in rectum and analyzing amount of human excrement, and then judging whether the electromagnet is electrified or not, so that opening or closing of an artificial anal sphincter can be directly controlled. The apparatus has the advantages of simple design, convenience in manufacturing and simpleness in operation.
Description
Technical field
The present invention relates to a kind of apparatus of technical field of medical instruments, specifically a kind of electromagnetic control type artificial anal sphincter device based on rectum perceptive function.
Background technology
Anal incontinence refers to and controls defecation impairment, and main manifestations is that defecation can not control clinically.Not only bring misery to patient, also bring burden to society.Fecal incontinence is a kind of disease common clinically, and according to the sickness rate of statistics adult up to 2%, over-65s person sickness rate can reach 7%, and fecal incontinence has become one of disease being badly in need of when participating in the cintest solving.
Due to anal sphincter loss of function or anal sphincter is cut etc. that reason causes severe fecal incontinence disease, the method for this fecal incontinence of surgical intervention has intestines ostomy and artificial anal sphincter.The last selection scheme of intestines ostomy history surgical intervention fecal incontinence, it is a kind of effective means saving life, but it is the physiological deformity of a kind of violation and deformity, and the quality of life of patient and quality of life are greatly affected.Artificial anal sphincter is that artificial organ---artificial anal sphincter is to treat fecal incontinence disease in use.External clinically by artificial anal sphincter (Artificial Anal Sphincter) for surgical intervention fecal incontinence disease, and obtain good effect.
Through finding the literature search of prior art, the United States Patent (USP) Artificial Anal Sphincter (patent No.: US 7,022,622 B2) relate to a kind of artificial anal sphincter being used for the treatment of fecal incontinence, this artificial anal sphincter comprises pressure and regulates ball, control pump and clamp pouch three parts.Its operation principle is manual squeezing formula, and the shortcoming that this working method makes this artificial anal sphincter exist is: the liquid in clamp pouch manually must be drained into liquid storage pouch by fashion of extrusion by patient, uses inconvenience.In addition, patient can not the degree of perception feces amount, can not realize autonomous bowel movement function.List of references (Kotaro Nishi, Takamichi Kamiyama, and so on. Develop of an implantable artificial anal sphincter using a shape memory alloy. Journal of pediatric surgery, Vol 39, No1,2004:69--72) describe one and have wireless energy supply device and by marmem (SMA, Shape Memory Alloy) artificial anal sphincter system that plate is formed, and has done isolated experiment with it pig.But there is certain defect equally: 1: be that patient can not the degree of perception feces amount equally, defecation that can not be autonomous; 2. marmem can generate heat and reach more than 50 degree in the process of work, is a kind of potential danger to human body.
Summary of the invention
The object of the invention is to the deficiency for existing artificial anal sphincter and defect, propose a kind of electromagnetic control type artificial anal sphincter device based on rectum perceptive function.As the actuator of artificial anal sphincter, first the pressure transducer that this device is installed records intrarectal pressure signal, then signal is delivered to external signal processing system, through the size of algorithm conversion perception internal rectum feces amount, patient is the need of defecation in prompting.Finally by the jaw device in external device control volume closedown with open, the clamping of corresponding colon and unclamping, to realize the function that assisting patients carries out defecation.
Object of the present invention is achieved through the following technical solutions: a kind of electromagnetic control type artificial anal sphincter device based on rectum perceptive function, comprises the hinge shape mechanism of a direct current push-pull electromagnet, the first pressing plate and the second pressing plate formation, an arc close mechanism, two pieces of flexible baffles and two pressure transducers compositions.Because whole actuating unit wants implant into body inner, consider biocompatibility, last whole device will be wrapped up completely by medical grade silicon rubber thin film.It is characterized in that:
Described first pressing plate and the second pressing plate are isometric flaky texture, and material is medical titanium nickel alloy, and wraps up medical grade silicon rubber thin film completely on surface.Two pressing plates are passing on left hinge formation hinge shape mechanism, and two pressing plates can be that revolute pair rotates with hinge.The center of the first pressing plate has the groove of certain length, prepares for embedding a miniature slide block later.Second pressing plate has an aperture in the part near hinge, and the push rod of direct current push-pull electromagnet is through this aperture.
By the lower surface of the fixed support of direct current push-pull electromagnet and the second pressing plate is welded together, electric magnet has just been fixed on the second pressing plate.The push rod simultaneously stretched out from electric magnet inside is through the aperture of the second pressing plate, and then pass through hinge with miniature slide block, miniature slide block is then embedded in the fluting of the first pressing plate.Because miniature slide block can be free to slide in the fluting of the first pressing plate, push rod can stretch up and down in electric magnet, ensure that whole transposition can realize motion.When electric magnet is not energized, spring below electric magnet is in compressive state, the movable core of electric magnet inside is separated with secured core under spring force, push rod also moves downward because be connected with movable core, drive miniature slide block slide downward in the fluting of the first pressing plate, first pressing plate moves downward simultaneously, and artificial anal sphincter is closed.After electric magnet energising, due to the effect of electromagnetic force, magnetic force between the secured core of electric magnet inside and movable core overcomes the effect of spring force, attraction movable core moves upward, the push rod be connected with movable core moves upward thereupon, drive miniature slide block upward sliding in the fluting of the first pressing plate, the first pressing plate moves upward simultaneously, opens artificial anal sphincter.
Miniature slide block is limited to slide in the fluting of the first pressing plate, and that is when miniature slide block slides into bottom along fluting, artificial anal sphincter is in and closes at utmost; When miniature slide block slides into topmost along fluting, artificial anal sphincter is in be opened at utmost.Therefore we can limit the open closed degree of artificial anal sphincter by the length and location of adjustment fluting, ensure the size of the arc close mechanism when device is opened be greater than intestinal normal time diameter, can normal defecation; When device closes, shape is low angle arc, is used for clamping intestinal.
At the far-end of the first pressing plate and the second pressing plate, make two low-angle arc close mechanisms, be used for clamping intestinal.The two ends, left and right of arc close mechanism are fixed with two pieces of flexible baffles simultaneously, play the effect of fixing intestinal position.Consider the problem of biocompatibility, the material of arc close mechanism and flexible baffle all selects medical grade silicon rubber, under guarantee realizes the prerequisite of closure function, cause the least possible injury to tissue.Simultaneously for realizing rectum perceptive function, two pressure transducers, by the cavity inside be placed in respectively between two arc close mechanisms and hinge shape mechanism, monitor the change of the pressure signal in intestinal at any time.
When patient is without the need to carrying out defecation, direct current push-pull electromagnet is in non-"on" position, and artificial anal sphincter keeps closed condition, realizes the function of clamping intestinal; In system operation, the pressure transducer of arc close mechanism inside monitors the pressure change in intestinal continuously, and pressure signal is delivered to the feces amount that external signal processing system carries out in algorithm conversion perception intestinal.When detect in rectal pressure signal containing huge migrating contractions (High-amplitude propagated contractions, HAPC) time, as the mark of needs of patients defecation, then send warning signal remind patient carry out defecation prepare.Now patient controls this device by device outside, namely to electric magnet energising, opens artificial anal sphincter device, realizes bowel movement function.
The present invention, by controlling whether to realize the clamping of intestinal and the action of unclamping to the energising of direct current push-pull electromagnet, has following outstanding substantive distinguishing features and remarkable advantage compared with existing artificial anal sphincter technology:
(1) manipulation of apparatus of the present invention is simple, only by the opening and closing that whether just can control artificial anal sphincter to the energising of direct current push-pull electromagnet, and can be controlled the degree of opening and closing by the position and size arranging fluting, whole implementation more easily realizes.
(2) structure of apparatus of the present invention is simple, and shared small volume, is more easily transplanted in human body, and whole device is wrapped up completely by medical grade silicon rubber thin film, the biocompatibility of better implement device.
(3) apparatus of the present invention are equipped with pressure transducer in the inside of arc closing structure, can monitor the pressure signal in intestinal, by external signal processing system, have the function of rebuilding rectum perception.
Accompanying drawing explanation
Fig. 1 apparatus of the present invention schematic diagram
Fig. 2 is miniature slide block and the situation that the connects schematic diagram of the first pressing plate
Fig. 3 is the internal structure schematic diagram of direct current push-pull electromagnet
Indicate in figure: 1 is the first pressing plate, 2 is second pressing plates, and 3 is direct current push-pull electromagnets, 4 is arc closing structures, and 5 is pressure transducers, and 6 is flexible baffles, 7 is miniature slide block, 8 is flutings, and 9 is fixed supports, and 10 is lids, 11 is springs, 12 is movable cores, and 13 is secured cores, and 14 is push rods.
Detailed description of the invention
A preferred embodiment of the present invention accompanying drawings is as follows:
See Fig. 1, Fig. 2 and Fig. 3, this is based on the electromagnetic control type artificial anal sphincter device of rectum perceptive function, comprise the hinge shape mechanism that first pressing plate (1) and the second pressing plate (2) are formed, a direct current push-pull electromagnet (3), two arc close mechanisms (4), two pressure transducers (5) and two pieces of flexible baffles (6), whole device is wrapped up completely by medical grade silicon rubber thin film, it is characterized in that: described first pressing plate (1) and the second pressing plate (2) are all made by medical titanium nickel alloy, skin is wrapped up completely by silicon rubber film, both form described hinge shape mechanism passing on left hinge, described direct current push-pull electromagnet (3) is fixed on the lower surface of the second pressing plate (2), the push rod (14) of electric magnet inside is connected by a miniature slide block (7) through after an aperture on the second pressing plate (2) with the first pressing plate (1), is free to slide in the fluting (8) that this miniature slide block (7) is embedded in the first pressing plate (1), in the far-end of described hinge shape structure, low-angle described arc close mechanism (4) made by useful silicon rubber thin membrane material, be fixed with two flexible baffles (6) in the left and right sides of arc closing structure (4) respectively, thus form artificial anal sphincter, two pressure transducers (5) are installed in the closed cavities between arc close mechanism (4) and Hinge mechanism, rectal pressure signal is detected.
operation principle:
When electric magnet (3) is not energized, the spring (11) of electric magnet (3) below is in compressive state, the movable core (12) of electric magnet (3) inside is separated with secured core (13) under spring force, push rod (14) also moves downward because be connected with movable core (12), drive miniature slide block (7) slide downward in the fluting (8) of the first pressing plate (1), first pressing plate (1) moves downward simultaneously, is that artificial anal sphincter closes.After electric magnet (3) energising, due to the effect of electromagnetic force, the secured core (13) of electric magnet (3) inside moves upward, be connected with movable core (12) be connected push rod (14) move upward thereupon, drive miniature slide block (7) upward sliding in the fluting (8) of the first pressing plate (1), first pressing plate (1) moves upward simultaneously, opens artificial anal sphincter.Two arc close mechanisms (4) are used for clamping intestinal, and two pieces of flexible baffles (6) at the two ends, left and right of arc close mechanism (4) are used for fixing intestinal position.The pressure signal that the pressure transducer (5) installed in cavity between two arc close mechanisms (4) and first, second pressing plate (1,2) is used in monitoring intestinal changes.When patient is without the need to carrying out defecation, electric magnet (3) is in non-"on" position, and artificial anal sphincter is kept closed, and realizes the function of clamping intestinal.When sensor (5) monitors pressure change in intestinal, then the signal processing system that pressure signal is sent to outside patient body is carried out the feces amount in conversion perception intestinal.When detect in internal rectum pressure signal containing huge migrating contractions time, as the mark of needs of patients defecation, send warning signal remind patient carry out defecation prepare.Patient controls electric magnet (3) energising by external transposition and realizes bowel movement function.
Claims (1)
1. the electromagnetic control type artificial anal sphincter device based on rectum perceptive function, comprise the hinge shape mechanism that first pressing plate (1) and the second pressing plate (2) form, a direct current push-pull electromagnet (3), two arc close mechanisms (4), two pressure transducers (5) and two pieces of flexible baffles (6), whole device is wrapped up completely by medical grade silicon rubber thin film, it is characterized in that:
1) described first pressing plate (1) and the second pressing plate (2) are all made by medical titanium nickel alloy, are outerly wrapped up completely by silicon rubber film, and both form described hinge shape mechanism passing on left hinge;
2) described direct current push-pull electromagnet (3) is fixed on the lower surface of the second pressing plate (2), the push rod (14) of electric magnet inside is connected by a miniature slide block (7) through after an aperture on the second pressing plate (2) with the first pressing plate (1), is free to slide in the fluting (8) that this miniature slide block (7) is embedded in the first pressing plate (1);
3) in the far-end of described hinge shape mechanism, low-angle described arc close mechanism (4) made by useful silicon rubber thin membrane material, be fixed with two flexible baffles (6) in the left and right sides of arc close mechanism (4) respectively, thus form artificial anal sphincter; Two pressure transducers (5) are installed in the closed cavities between arc close mechanism (4) and hinge shape mechanism, rectal pressure signal is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352187.2A CN102871773B (en) | 2012-09-21 | 2012-09-21 | Electromagnetic-controlled artificial anal sphincter apparatus based on rectum sensing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352187.2A CN102871773B (en) | 2012-09-21 | 2012-09-21 | Electromagnetic-controlled artificial anal sphincter apparatus based on rectum sensing function |
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| CN102871773A CN102871773A (en) | 2013-01-16 |
| CN102871773B true CN102871773B (en) | 2015-03-25 |
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| CN201210352187.2A Expired - Fee Related CN102871773B (en) | 2012-09-21 | 2012-09-21 | Electromagnetic-controlled artificial anal sphincter apparatus based on rectum sensing function |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103393480B (en) * | 2013-08-15 | 2015-04-01 | 上海交通大学 | Artificial anal sphincter prosthesis based on elastic contraction and release |
| CN103637859B (en) * | 2013-12-19 | 2015-05-27 | 上海交通大学 | Finger lock type artificial anal sphincter prosthesis |
| CN103683434B (en) * | 2013-12-30 | 2015-10-28 | 上海交通大学 | Based on charging system in the wireless body of transdermal power transmission |
| CN105030194B (en) * | 2015-04-22 | 2018-01-02 | 上海交通大学 | Intestinal contents detecting system and method based on pliable pressure sensor and infrared acquisition |
| CN112402054B (en) * | 2020-10-30 | 2024-02-13 | 中国人民解放军陆军军医大学第一附属医院 | Manual defecation device used after radical rectal cancer treatment operation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374072A (en) * | 2001-03-08 | 2002-10-16 | Nec东金株式会社 | Artificial sphincter muscle |
| CN101785713A (en) * | 2010-02-08 | 2010-07-28 | 庄潮平 | Device for simulating excrement storage and discharge functions of rectum anal tube |
| CN101986409A (en) * | 2010-11-19 | 2011-03-16 | 山东卓尔电气有限公司 | Central latching electromagnetic straight operating alternating-current contactor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007195655A (en) * | 2006-01-25 | 2007-08-09 | Shigeharu Keida | Sphincter strengthening device which can thoroughly apply proper electric stimulation over the whole of sphincter |
| JP2008237786A (en) * | 2007-03-29 | 2008-10-09 | Tohoku Univ | Artificial sphincter |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374072A (en) * | 2001-03-08 | 2002-10-16 | Nec东金株式会社 | Artificial sphincter muscle |
| CN101785713A (en) * | 2010-02-08 | 2010-07-28 | 庄潮平 | Device for simulating excrement storage and discharge functions of rectum anal tube |
| CN101986409A (en) * | 2010-11-19 | 2011-03-16 | 山东卓尔电气有限公司 | Central latching electromagnetic straight operating alternating-current contactor |
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