CN102551829A - Magnetic compression anastomosis ball - Google Patents
Magnetic compression anastomosis ball Download PDFInfo
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- CN102551829A CN102551829A CN2012100250243A CN201210025024A CN102551829A CN 102551829 A CN102551829 A CN 102551829A CN 2012100250243 A CN2012100250243 A CN 2012100250243A CN 201210025024 A CN201210025024 A CN 201210025024A CN 102551829 A CN102551829 A CN 102551829A
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Abstract
The invention provides a magnetic compression anastomosis ball, which can assuredly avoid anastomotic leakage caused by incomplete anastomosis and comprises a rotating shell I and a rotating shell II. The rotating shell I and the rotating shell II are attracted with each other magnetically. A plain thread of the rotating shell I is a smooth curve, two ends of the curve are spaced from an axis by certain distances, so that a large opening end and a small opening end of the rotating shell I are formed, a barrel I extending axially is arranged in an inner cavity of the rotating shell I, and the inner end of the barrel I is combined with the small opening end of the rotating shell I; a plane thread of the rotating shell II is a smooth curve, two ends of the curve are spaced from an axis by certain distances, so that a large opening end and a small opening end of the rotating shell II are formed, a barrel II extending axially is arranged in an inner cavity of the rotating shell II, and the inner end of the barrel II is combined with the small opening end of the rotating shell II; and during anastomosis, the barrel I axially slides into the barrel II, and under effects of magnetic attraction force, the large opening end of the rotating shell I and the large opening end of the rotating shell II are oppositely combined so that a broken end of an anastomosis part between the large opening end of the rotating shell I and the large opening end of the rotating shell II is clamped tightly.
Description
Technical field
The present invention relates to the identical field of gastrointestinal anastomosis and intestinal intestinal, be specifically related to a kind of identical ball of magnetic force compressing that is applied to gastrointestinal end to end anastomosis, end-to-side anastomosis or side to side anastomosis and end to end intestinal anastomosis, end-to-side anastomosis or side to side anastomosis.
Background technology
The history in existing more than 100 year of gastrointestinal anastomosis, a large amount of material different are applied to gastrointestinal anastomosis, comprise silk thread, catgut, rustless steel suture, novel ultimate fibre line and absorbable thread.In in the past 30 years, the anastomat device receives pursuing of surgeon.Yet coincideing, tact anastomosis and apparatus how to select to remain a lot of schools the question in dispute.
Along with the development of anastomosis, postoperative complication reduces gradually, but fistula of operative incision remains one of the most worrying post-operative complication.The incidence rate (1%-24%) of fistula of operative incision has very big-difference, and the incidence rate of low rectal fistula of operative incision (12%-19%) is higher than colon fistula of operative incision (11%).Fistula of operative incision and higher local relapse and lower long-term survival rate have dependency.In addition, secular gastrointestinal function also can receive the adverse effect of complication such as methods of anastomosis, method and fistula of operative incision.Closely for over 100 years more than a hundred years; People have carried out persistent exploration to the intestinal anastomosis; Purpose be set up than manual suture safety and reliability, more convenient, to the little anastomosis of intestinal function influence; New method, new apparatus have report repeatly, and various anastomosis have been proved to be and can have compared favourably with the anastomat technology with the craft of standard is identical.Yet most alternative anastomosis is also immature.
1. follow closely the formula anastomosis
Nail formula surgical stapling apparatus is by Hultl, Humer (Budapest) is invention in 1908, and the invention of new reliable disposable medical instrument just grows up gradually yet its application just was accompanied by in nearest 30 years.But the coincide probability of the anastomotic stricture that causes than suture manual technique of nail formula obviously increases, and both ratios are 8%:2%, and in mortality rate, anastomotic stoma perforation, both do not have significant difference the wound infection aspect.There is foreign body reaction in confirmations such as Lim when using the identical pedestrian's body gastrointestinal tract of nail formula to coincide.This reaction mainly is because the material of anastomat causes.Except meeting cause the anastomotic stricture incidence rate higher, the factor of the level of get rid of coincideing, present document does not confirm that the nail formula coincide and have more superiority than simple suture manual technique.The application that the nail formula is coincide in intraperitoneal coincide exists dispute always.Matos data base (evidence-based medicine EBM data) system review is reached a conclusion after having analyzed 9 researchs that comprise 1233 routine patients (622 routine nail formulas are coincide and 611 routine suture manual techniques): overall anastomotic leakage 13%:13.4%; The 6.3%:7.1% that clinical manifestation is arranged; The 7.8%:7.2% of Radiologic imaging, thus show that two kinds of identical methods do not have significant difference.Thereby adopt which kind of method often to depend on doctor's experience, clinical practice situation and the information of being grasped.And another systematic retrospective research also shows, these two kinds of methods (nail formula vs hands stitch) all are effectively, and the selection of this moment is generally according to doctor's hobby.Meanwhile, other perspective random experiments but show different conclusions.No matter they thought in the identical time, or the complication prevention aspect, do not have notable difference between two kinds of methods.In addition,, and fistula of operative incision is significantly reduced although can reduce operating time, owing to cause anastomotic stricture and other flaws more easily, so the not conventional recommendation in the knot anastomosis of rectum that coincide of nail formula.
2. compressed anastomosis art
Since 19th century, the identical method after the intestinal excision receives much concern always.People's target is exactly to find a good identical method to reduce the generation of anastomotic leakage.The principle of compressed anastomosis art is blocked broken-hearted end with two opposition rings exactly each other, and makes its ischemia, and necrosis comes off, and ring is discharged with intestinal contents.Let it be to the greatest extent, and method is safely and effectively, but in clinical, is not widely used.
(1) the compressed anastomosis art 1826 by the Denan reported first, the know-why that he mainly utilizes Lembert to propose reaches seamless intestinal and coincide.It is with the two ends enteric cavity formation compression ring that coincide, and makes the anastomosis ring ischemic necrosis, comes off, thereby makes anastomotic healing." anastomosis button " of Murphy release in 1892, it mainly is to utilize a bimetallic ring under lasting pressure effect, to make broken-hearted end keep connection status; And after performing the operation 3,4 days, becket is come off.Yet its clinical efficacy is very limited.
(2) AKA-2 is 1984, and Kanshin etc. have invented AKA-2 device (Seidel Medipool, Munich, Germany).In 1985, Hardy etc. released degradable anastomosis ring (BAR) subsequently, comprised that numerous publications of many perspective randomized controlled trials (RCTs) are all reported, no matter be emergency operation or choose date for operation, BAR is safely and effectively.AKA-2 and BAR both adopt the theory of compressed anastomosis and the characteristic of anastomosis button.Yet different with BAR is that the AKA-2 ring can not be absorbed, and often just ruptures in 4 to 6 days in the back that coincide.In addition, it only is applied in the identical operation of per anum.The limitation that BAR coincide comprises: 1. purse string suture failure; 2. the colonic lumen diameter is estimated inaccurate; 3. mucosa splits; 4. failure (intestinal is probably by the outer crush injury of intestinal) coincide; 5. too much excessive pressure can destroy equipment; 6. the ring degraded postpones; 7. degradation product may cause the symptom that postoperative tenesmus, times of defecation increase before discharging; 8. install big and bad operation; 9. the internal diameter dysporia of encircling that causes less than normal.
(3) Ultimum Ti (SMA) for many years after people found a kind of compressed anastomosis device of new Ultimum Ti (SMA) again.This device both can be used as compressed anastomosis folder (CAC, Netanya, Israel), also can be used as a compressed anastomosis ring (BAR, NiTi Medical Technologies).Generally after surgery about a week, whole device and downright bad tissue begin to break away from, and in body, discharge.
Nitinol CAC apparatus (Niti Medical Technologies) is used for gastrointestinal procedures by the FDA approval.This apparatus is made up of dicyclo, in open and elastic stage (0 ℃), and diameter 30mm, open angle 30 degree.Under body temperature, dicyclo is got back to arrangement for closed configuration and is supported intestinal tube with the strength that continues, and whether no matter thickness reaches is inserted tissue.This causes the intestinal wall ischemia that is absorbed in and oppresses the formation that coincide.The internal diameter of ring is 8mm, and intestinal tube unobstructed when diameter 5mm cutting blade being housed keep coincideing.
(4) intracavity compressing anastomosis ring (EndoCAR) EndoCAR (niti-shaped memorial alloy series) uses two isolating synthetic rings, is assemblied on the equipment of an extraordinary image anastomosis ring applicator.Nail supporting base (in a ring is arranged) is fixed on the nearly broken ends of fractured bone of intestinal tube, and the anastomat per anum that comprises another ring inserts to be done rectum and coincide.During percussion, predetermined the lasting controlled pressure that two rings are discharged through the Nitinol spring (7.7 newton or 1.65 pounds) locking, the tissue of the entering of endless knife excision simultaneously.For the side to side anastomosis apparatus, there is a simultaneous necrosis-repair process.After 7-10 days, along with the end of this process, apparatus will separate and discharge naturally.And further fixing two the intestinal tube broken ends of fractured bone of metal tip are organized the slippage owing to axially-movable to stop longitudinally.The advantage of this contemporary equipment is the lip shape edge of cicatrix that coincide in the tube chamber, and does not need the taking-up firing device that empennage just can safety.
Independently study for two and observed the burst pressure in the pig model.Kopelman etc. have measured in 0 o'clock (measuring immediately after the molding that coincide) average outburst pressure 9 animals and have been 247.7mmHg (100-300mmHg).And report such as Stewart, with traditional two stitching compared with techniques, the compression back burst pressure of coincideing significantly increases.Have 4 example compressions to coincide in 9 examples and on concordant profipole, fail, and 9 routine stapled anastomosises are all failed on staple line.(Fishers ' check, P ﹤ 0.01).Coincide and two weeks of back measure the pressure that the burst pressure demonstration equates.Compression coincide and has the ability to overcome the identical defective of classical later stage, and burst pressure also equated after anastomosis ring came off.
It was 0.81 (0.60-0.92) in the time of 2 months that Kopelman etc. have observed identical index (apart from the average intestinal tube diameter proportion of anastomotic stoma near-end and far-end 5cm, the preceding outside and rear side are observed).
An early stage clinical research of Israel has been carried out one group of left hemicolon with EndoCAR and has been coincide.4 patients go into group.Do not find apparatus related complication and fistula of operative incision.Based on above-mentioned research, 2007.5 months have begun a research at Uppsala (Sweden) and Leuven (Belgium), to be organized 40 routine patients' clinical data continuously.Go into to organize the good malignant disease that the patient has needs excision, and do high-order knot rectum identical (between anus edge 10-15cm).PRELIMINARY RESULTS shows, first 10 patients have carried out the preceding excision of high-order sacrum, carried out left hemicolectomy for 1 for 9.No fistula takes place.
These compellent results show that this apparatus can become the clinical revolutionary character invention of knot rectum; Yet, still have doubt for its effect in low level/low Low Level rectum coincide.Place anastomosis ring at the bottom of the basin and can cause the anal canal responsive (sense of urgency) that continues.
(5) the magnetic control anastomosis has the clear magnetic ring that is used for bowel anastomosis of Crinis Carbonisatus in the 1980s, but this theory does not obtain higher generalization.Recently; The report of the surgery of san francisco, usa University of California system the research that intestinal magnetic force coincide; This research is carried out side to side anastomosis to the intestinal tube of 16 pigs; One group (8) carry out the intestinal tube side to side anastomosis with the anastomosis of magnetic control mode, and another group (8) gives the surface about 3000 magnetic induction with maneuver and anastomat side to side anastomosis intestinal tube.The preliminary experiment The results of univariate logistic analysis shows, when magnetic induction during at 3000/6000～6000/6000 magnetic flux, can cause the downright bad and perforation in 48 hours of intestinal tube anastomosis.The experimental result prompting, the identical and tact anastomosis of magnetic control mode or anastomat be not statistically significant aspect the identical complication of identical intestinal tube.Do not cause that intestinal tube is narrow, the intestinal tube of magnetic coincide has novelty, has wide practical use, and does not previously have relevant report.
Summary of the invention
The technical problem that the present invention will solve provides the identical ball of a kind of magnetic force compressing, guarantees can not take place because the fistula of operative incision that coincide and do not cause entirely.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A kind of magnetic force is oppressed the ball that coincide, and comprises the revolving shell I and the revolving shell II of the mutual adhesive of magnetic,
The plain line of revolving shell I is a smooth curve; The two ends of curve are apart from the axis certain distance; Form big opening end and the osculum end of revolving shell I, arrive axial line distance more than or equal near the point of the osculum end distance to axis near the point of big opening end on the plain line, revolving shell I inner chamber has an axially extended cylindrical shell I; The cylindrical shell I is inner to be combined with the osculum end of revolving shell I, and big opening end is stretched out in the outer end;
The plain line of revolving shell II is a smooth curve; The two ends of curve are apart from the axis certain distance; Form big opening end and the osculum end of revolving shell II, arrive axial line distance more than or equal near the point of the osculum end distance to axis near the point of big opening end on the plain line, revolving shell II inner chamber has an axially extended cylindrical shell II; The cylindrical shell II is inner to be combined with the osculum end of revolving shell II, and big opening end is stretched out in the outer end;
When coincideing, the cylindrical shell I endwisely slips in the cylindrical shell II, and under the effect of magnetic attraction, the big opening end of the big opening end of revolving shell I and revolving shell II is involutory to clamp the anastomosis broken ends of fractured bone between them.
The identical ball of above-mentioned magnetic force compressing, said cylindrical shell I outer end has radial projection, and the both sides of projection have end play; The inner peripheral surface of said cylindrical shell II has axially extended gathering sill, and on axial direction, the gathering sill middle part has the anticreep convexity;
When coincideing, gathering sill admits projection guiding cylindrical shell I in the cylindrical shell II, to endwisely slip, and projection is crossed the protruding continuation of anticreep axially-movable.
The identical ball of above-mentioned magnetic force compressing, said cylindrical shell II outer end has radial flange.
The above-mentioned magnetic force compressing ball that coincide, said revolving shell I osculum end are provided with the open-work that is communicated with cavity and gastrointestinal cavity between revolving shell I and the cylindrical shell I; Said revolving shell II osculum end is provided with the open-work that is communicated with cavity and gastrointestinal cavity between revolving shell II and the cylindrical shell II.
The identical ball of above-mentioned magnetic force compressing, the magnetic attracting power of revolving shell I and revolving shell II realizes through following structure: said revolving shell I and revolving shell II big opening end are equipped with the magnet ring of a pair of mutual adhesive.
The identical ball of above-mentioned magnetic force compressing, said magnet ring has 2000-3000 Gauss's magnetic force.
The above-mentioned magnetic force compressing ball that coincide, said revolving shell I are the semielliptical shell that the hemispherical Shell that pushes up or go pushes up; Said revolving shell II is the semielliptical shell that the hemispherical Shell that pushes up or go pushes up.
The identical ball of above-mentioned magnetic force compressing, said cylindrical shell I and cylindrical shell II are cylinder, and the external diameter of cylindrical shell I equals the internal diameter of cylindrical shell II basically.
The identical ball of above-mentioned magnetic force compressing, said projection is 3, correspondingly, gathering sill is 3.
The identical ball of above-mentioned magnetic force compressing, said identical ball is processed by the medical polyethylene plastics, and magnet ring thickness is 2mm.
The broken ends of fractured bone free edge of two identical stomaches or intestinal tube through purse string suture respectively ligation be fixed on the outer peripheral face of cylindrical shell I and cylindrical shell II; Under the effect of magnetic attraction; The big opening end of the big opening end of revolving shell I and revolving shell II is involutory smoothly not to have the clamping of pleat ground with the anastomosis broken ends of fractured bone between them; The serosal surface of both sides is bonded with each other, sets up the essential condition of gastrointestinal healing.The smooth surface of whole identical ball, easy damaged gastrointestinal mucosa not takes off when falling behind in the enteral motion not easy damaged intestinal, is convenient to get rid of external.In addition, cylindrical shell I inner chamber has constituted whole identical ball drainage channel, is convenient to intestinal contents and passes through.Intestinal mucosa is smooth behind the anastomotic healing of the present invention, avoid because the fistula of operative incision that coincide and not cause entirely, and the various untoward reaction that no forward line and peg bring, the postoperative gastric intestinal function is good, and the identical agglutination of organizing carries out smoothly.
Description of drawings
Do further detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention:
Fig. 1 is the structural representation of assembly I.
Fig. 2 is the structural representation at another visual angle of assembly I among Fig. 1.
Fig. 3 is the structural representation of assembly II.
Fig. 4 is the structural representation at another visual angle of assembly II among Fig. 3.
Fig. 5 is the structural representation at another visual angle of assembly II among Fig. 3.
Fig. 6 is the structural representation at another visual angle of assembly II among Fig. 3.
Fig. 7 is the sectional structure sketch map of assembly II.
Among the figure: 1 involutory surface I, 2 cylindrical shell I, 3 projections, 4 open-works, 5 magnet ring storage tanks, 6 involutory surface II, 7 cylindrical shell II, 8 flanges, 9 gathering sills, 10 anticreeps are protruding, 11 revolving shell I, 12 revolving shell II.
The specific embodiment
The identical ball of magnetic force compressing comprises assembly I and assembly II on the whole, and Fig. 1～2 show the overall structure of assembly I, and Fig. 3～7 show the overall structure of assembly II, down in the face of the detailed introduction of ball that coincide.
As can be seen from the figure, the assembly I comprises revolving shell I 11 and cylindrical shell I 2.For the not easy damaged gastrointestinal mucosa of ball that make to coincide, take off when falling behind in the enteral motion not easy damaged intestinal, be convenient to get rid of external, just require the revolving shell I to have slick and sly surface.The plain line of revolving shell I is a smooth curve, and the two ends of curve are apart from the axis certain distance, and like this, the revolving shell I just has two openings, is respectively big opening end and osculum end.On the plain line near the point of big opening end to axial line distance more than or equal near the point of osculum end distance to axis.The cylindrical shell I is positioned at revolving shell I inner chamber and in axial direction extends; The cylindrical shell I is inner to be combined with the osculum end of revolving shell I; Big opening end is stretched out in the outer end, and like this, the cylindrical shell I is divided into two parts with revolving shell I inner chamber; A part is for to be in the cavity between cylindrical shell I and the revolving shell I, and another part is a cylindrical shell I inner chamber.Cavity between cylindrical shell I and the revolving shell I can hold broken ends of fractured bone free edge, and cylindrical shell I inner chamber has guaranteed the unobstructed of anastomotic stoma.In addition, also be provided with Magnet on the revolving shell I, be specially magnet ring in the drawings, place in the magnet ring storage tank 5 of revolving shell I involutory surface I 1.
The assembly II comprises revolving shell II 12 and cylindrical shell II 7.For the not easy damaged gastrointestinal mucosa of ball that make to coincide, take off when falling behind in the enteral motion not easy damaged intestinal, be convenient to get rid of external, just require the revolving shell II to have slick and sly surface.The plain line of revolving shell II is a smooth curve, and the two ends of curve are apart from the axis certain distance, and like this, the revolving shell II just has two openings, is respectively big opening end and osculum end.On the plain line near the point of big opening end to axial line distance more than or equal near the point of osculum end distance to axis.The cylindrical shell II is positioned at revolving shell II inner chamber and in axial direction extends; The cylindrical shell II is inner to be combined with the osculum end of revolving shell II; Big opening end is stretched out in the outer end, and like this, the cylindrical shell II is divided into two parts with revolving shell II inner chamber; A part is for to be in the cavity between cylindrical shell II and the revolving shell II, and another part is a cylindrical shell II inner chamber.Cavity between cylindrical shell II and the revolving shell II can hold broken ends of fractured bone free edge, and cylindrical shell II inner chamber is admitted the cylindrical shell I, and guiding cylindrical shell I is slided in the cylindrical shell II.In addition, also be provided with Magnet on the revolving shell II, be specially magnet ring in the drawings, place in the magnet ring storage tank 5 of revolving shell II involutory surface II 6.
When coincideing; Assembly I and assembly II are placed the broken ends of fractured bone of two identical stomaches or intestinal tube respectively, corresponding broken ends of fractured bone free edge through purse string suture respectively ligation be fixed on the outer peripheral face of cylindrical shell I and cylindrical shell II, the cylindrical shell I endwisely slips in the cylindrical shell II; Under the effect of magnetic attraction; The involutory surface I of revolving shell I and the involutory surface II of revolving shell II are involutory to clamp the anastomosis broken ends of fractured bone between them, and the serosal surface of both sides is bonded with each other, and sets up the essential condition of gastrointestinal healing.Utilize the hemisphere structure of two complementary structures, stomach (intestinal) broken ends of fractured bone is fixing respectively, and mutual chimeric back forms complete spheroid in gastrointestinal cavity; Make two broken ends of fractured bone serosal surfaces of gastrointestinal involutory, under the magnetic force contention effect, accomplish the process of coincideing, cut and come off automatically; Recover the gastrointestinal seriality, spheroid is discharged from anus, and method for using is easy; Safety is good, can reduce complication such as anastomotic leakage, anastomotic stricture effectively.The present invention has guaranteed that anastomotic stoma smoothly do not have pleat, guarantees can not take place because the fistula of operative incision that coincide and do not cause entirely, and the agglutination of the tissue that coincide carries out smoothly.
Not organize the not congruent situation that can be shifted, separates, comes off, coincide in order guaranteeing to coincide, to guarantee the safety of performing the operation, said cylindrical shell I outer end has radial projection 3, and the both sides of projection have end play.The inner peripheral surface of said cylindrical shell II has axially extended gathering sill 9, and on axial direction, the gathering sill middle part has anticreep protruding 10.When coincideing, gathering sill admits projection guiding cylindrical shell I in the cylindrical shell II, to endwisely slip, and projection is crossed the protruding continuation of anticreep axially-movable.As can be seen from Figure 1, number of slugs is three, and correspondingly, gathering sill also is three, can certainly be other quantity.The gathering sill middle part has the disengagement that anticreep protruding 10 can be good at preventing identical ball.It is to have radial elasticity for the ease of projection that the both sides of projection have end play, can cross the anticreep convexity smoothly.
In order to stop that the broken ends of fractured bone free edge after the ligation of broken ends of fractured bone purse string suture deviates from from cylindrical shell II outer end, Fig. 3 can be clear that very that cylindrical shell II outer end is provided with radial flange.
Consistent with the air pressure of gastrointestinal tract inner chamber for the ball inner chamber that guarantees to coincide, said revolving shell I osculum end is provided with the open-work 4 of cavity and gastrointestinal tract inner chamber between connection revolving shell I and the cylindrical shell I.Said revolving shell II osculum end is provided with the open-work 4 that is communicated with cavity and gastrointestinal tract inner chamber between revolving shell II and the cylindrical shell II.
Above-mentioned magnet ring has 2000-3000 Gauss's magnetic force, can guarantee to coincide complete closely, again can be, and the ball surrounding tissue of coincideing is not had magnetic force influence in discharges that come off smoothly after accomplishing that coincide.
Common, the semielliptical shell that is shaped as the hemispherical Shell that pushes up or goes to push up of revolving shell I and revolving shell II.Said cylindrical shell I and cylindrical shell II are isometrical cylinder, and the external diameter of cylindrical shell I equals the internal diameter of cylindrical shell II basically.
The ball that coincide is processed by the medical polyethylene plastics, smooth surface, and weight is merely 10g, no foreign body reaction, histocompatibility is good.Therefore each magnet ring thickness is merely 2mm, coincide to accomplish the back ball that coincide and be easy to discharge from gastrointestinal tract, and no incarceration takes place, and body does not have and weighs down discomfort such as expand and react when not coming off, and can not cause that intestinal tube becomes angle, narrow, adhesion, blocks even complication such as perforation.
Identical ball of the present invention is of many uses, can be used for the end end and the end-to-side anastomosis of gastrointestinal, intestinal intestinal, and the gastrointestinal tract of a high position and low Low Level coincide, and has obviously simplified operation technique.
Claims (10)
1. a magnetic force is oppressed the ball that coincide, and it is characterized in that: comprise the revolving shell I and the revolving shell II of the mutual adhesive of magnetic,
The plain line of revolving shell I is a smooth curve; The two ends of curve are apart from the axis certain distance; Form big opening end and the osculum end of revolving shell I, arrive axial line distance more than or equal near the point of the osculum end distance to axis near the point of big opening end on the plain line, revolving shell I inner chamber has an axially extended cylindrical shell I; The cylindrical shell I is inner to be combined with the osculum end of revolving shell I, and big opening end is stretched out in the outer end;
The plain line of revolving shell II is a smooth curve; The two ends of curve are apart from the axis certain distance; Form big opening end and the osculum end of revolving shell II, arrive axial line distance more than or equal near the point of the osculum end distance to axis near the point of big opening end on the plain line, revolving shell II inner chamber has an axially extended cylindrical shell II; The cylindrical shell II is inner to be combined with the osculum end of revolving shell II, and big opening end is stretched out in the outer end;
When coincideing, the cylindrical shell I endwisely slips in the cylindrical shell II, and under the effect of magnetic attraction, the big opening end of the big opening end of revolving shell I and revolving shell II is involutory to clamp the anastomosis broken ends of fractured bone between them.
2. the identical ball of magnetic force compressing according to claim 1, it is characterized in that: said cylindrical shell I outer end has radial projection, and the both sides of projection have end play; The inner peripheral surface of said cylindrical shell II has axially extended gathering sill, and on axial direction, the gathering sill middle part has the anticreep convexity;
When coincideing, gathering sill admits projection guiding cylindrical shell I in the cylindrical shell II, to endwisely slip, and projection is crossed the protruding continuation of anticreep axially-movable.
3. the identical ball of magnetic force compressing according to claim 1 and 2, it is characterized in that: said cylindrical shell II outer end has radial flange.
4. the magnetic force according to claim 1 and 2 compressing ball that coincide is characterized in that: said revolving shell I osculum end is provided with the open-work that is communicated with cavity and gastrointestinal cavity between revolving shell I and the cylindrical shell I; Said revolving shell II osculum end is provided with the open-work that is communicated with cavity and gastrointestinal cavity between revolving shell II and the cylindrical shell II.
5. the identical ball of magnetic force compressing according to claim 1 and 2, it is characterized in that: the magnetic attracting power of revolving shell I and revolving shell II realizes through following structure: said revolving shell I and revolving shell II big opening end are equipped with the magnet ring of a pair of mutual adhesive.
6. the identical ball of magnetic force compressing according to claim 5, it is characterized in that: said magnet ring has 2000-3000 Gauss's magnetic force.
7. the magnetic force according to claim 1 and 2 compressing ball that coincide is characterized in that: said revolving shell I is the semielliptical shell that the hemispherical Shell that pushes up or go pushes up; Said revolving shell II is the semielliptical shell that the hemispherical Shell that pushes up or go pushes up.
8. the identical ball of magnetic force compressing according to claim 1 and 2, it is characterized in that: said cylindrical shell I and cylindrical shell II are cylinder, and the external diameter of cylindrical shell I equals the internal diameter of cylindrical shell II basically.
9. the identical ball of magnetic force compressing according to claim 2, it is characterized in that: said projection is 3, correspondingly, gathering sill is 3.
10. the identical ball of magnetic force compressing according to claim 1 and 2, it is characterized in that: said identical ball is processed by the medical polyethylene plastics, and magnet ring thickness is 2mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105534556A (en) * | 2016-02-26 | 2016-05-04 | 杭州越阡生物科技有限公司 | Gastrointestinal tract anastomosis ring |
| CN108635003A (en) * | 2018-05-15 | 2018-10-12 | 中国人民解放军陆军军医大学第三附属医院（野战外科研究所） | A kind of stricture of esophageal anastomosis combination cutter device |
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| WO1981000668A1 (en) * | 1979-09-07 | 1981-03-19 | A Jansen | Medical device for connecting two portions of the intestine,ancillary device for use therewith,and method for insertion of an intestinal button suture with the aid of this device |
| CN1792336A (en) * | 2005-12-23 | 2006-06-28 | 西安交通大学 | Stent used for cholangiojejunostomy |
| CN201481479U (en) * | 2009-06-17 | 2010-05-26 | 刘忠臣 | Embolia type lock catch anastomosis ring |
| US20110087252A1 (en) * | 2009-10-08 | 2011-04-14 | Wilson-Cook Medical Inc. | Biliary decompression and anastomosis stent |
| CN101904758A (en) * | 2010-07-01 | 2010-12-08 | 西安交通大学 | Hepaticojejunostomic and intestinal end-to-side anastomotic magnetic device |
| CN202437231U (en) * | 2012-02-06 | 2012-09-19 | 徐忠法 | Magnetic-pressing anastomosis ball |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105534556A (en) * | 2016-02-26 | 2016-05-04 | 杭州越阡生物科技有限公司 | Gastrointestinal tract anastomosis ring |
| CN108635003A (en) * | 2018-05-15 | 2018-10-12 | 中国人民解放军陆军军医大学第三附属医院（野战外科研究所） | A kind of stricture of esophageal anastomosis combination cutter device |
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