CN105596044A - Soft tissue fixing device with absorbable screws - Google Patents
Soft tissue fixing device with absorbable screws Download PDFInfo
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- CN105596044A CN105596044A CN201610051820.2A CN201610051820A CN105596044A CN 105596044 A CN105596044 A CN 105596044A CN 201610051820 A CN201610051820 A CN 201610051820A CN 105596044 A CN105596044 A CN 105596044A
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- poly
- nail
- soft tissue
- lactide
- fixation devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/064—Surgical staples, i.e. penetrating the tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/08—Materials for coatings
- A61L31/10—Macromolecular materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/148—Materials at least partially resorbable by the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/16—Biologically active materials, e.g. therapeutic substances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00889—Material properties antimicrobial, disinfectant
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B2017/0647—Surgical staples, i.e. penetrating the tissue having one single leg, e.g. tacks
- A61B2017/0648—Surgical staples, i.e. penetrating the tissue having one single leg, e.g. tacks threaded, e.g. tacks with a screw thread
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
- A61L2300/104—Silver, e.g. silver sulfadiazine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/606—Coatings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/10—Materials for lubricating medical devices
Abstract
The invention relates to a soft tissue fixing device with absorbable screws and belongs to the technical field of medical apparatus and instruments. The soft tissue fixing device with the absorbable screws comprises a driving device, a screw pipe and a driving rod, wherein the screw pipe is externally in screw joint with a guide pipe; the guide pipe is internally provided with multiple absorbable screws; thread structures are formed on nailed beams of the absorbable screws and provided with screw lead springs; the multiple absorbable screws are sequentially and serially connected end to end so as to be arranged in the guide pipe with a spiral groove. When in use, a trigger is pulled, so that the driving rod is driven by the driving device to rotate, and furthermore the absorbable screws can be emitted out from the guide pipe one by one during herniorrhaphy under a laparoscope. The soft tissue fixing device with the absorbable screws is especially applicable to the herniorrhaphy under the laparoscope, and has the characteristics of adhesion prevention, and convenience and reliability in operation; the guide pipe is a detachable replacement part, so that the fixing device can be repeatedly used only by replacing the guide pipe.
Description
Technical field
The present invention relates to the technical field of medicine equipment, more particularly, the present invention relates to a kind of soft tissue that can absorb nail that containsFixture.
Background technology
Incisional hernia (incisionalhernia) refers to that abdominal visceral browser or tissue, from the outstanding hernia of abdominal incision, are the common of laparotomy ventrotomyComplication; Wherein, below abdominal midline incision incidence higher, the multiple belly stringer cutout regions of being born in, see disruption of wound,Infect, the otch of healing by second intention, minority betides not to be had disruption of wound medical history and appears at after operation after the long period. Its morbidityRate Yue Keda 2-11%, and after wound generation infection, incisional hernia incidence can be up to 40% left and right. Abdominal Incisional Hernia taking operative treatment asMain, the method for repairing and mending of incisional hernia is open neoplasty and the laparoscopic incision herniorrhaphy that uses or do not use artificial sticking patch at present.Simple tissue apposition is repaired postoperative incisional hernia recurrence rate still can be up to 20-50%. According to the domestic principle of classification of Abdominal Incisional Hernia, clinicalWith in-greatly, even Huge Incisional Hernia Treated is comparatively common, adopt artificial sticking patch to carry out tension-free hernia and this type of incisional hernia, can haveIncisional hernia recurrence rate is reduced to 10% left and right by effect ground. The comparison of laparoscope and open neoplasty, has following characteristics:
(1) laparoscopic incision herniorrhaphy is followed abdominal hernia surgical principle, and meet and strengthen the bioengineering mechanics principle that rear wall is repaired,Postoperative recurrent rate can reach < 5%. (2) operative approach, away from former incisional hernia, reduces the chance of embedded material site infection, especially rightOnce there is the infected in otch. (3) abdominal wall tissue does not need extensively free destruction, and original intensity of preserving as far as possible stomach wall, is more suitable forRecurrent incisional hernia. (4) between hernia damaged place skin and artificial sticking patch, still remain with the soft tissue that does not destroy blood supply, effectivelyCover the artificial sticking patch of compressing, be beneficial to fibr tissue and grow in polypropylene coarse mesh, the healing that improves artificial sticking patch and abdominal wall tissue is strongDegree. (5) in pneumoperitoneum state, free hernial content is more visual and clear, and Action of Gravity Field naturally droops hernial content, can avoid damageThe passive situation of intestinal tube. (6) in abdominal cavity, be easier to find invisible " pin hole hernia ", reduce the postoperative recurrence hernia causing thus.(7) the fixing sticking patch of abdominal cavity in seaming nail multiple spot, even tension disperses to lower. (8) sticking patch is implanted region without skin incision, subtractsLack possibility that hemotoncus hydrops occurs, needn't conventional placing drainage, minimizing opportunities for contamination. (9) non-stomach wall through and through suture is fixedSticking patch person, postoperative pain mild degree, duration are short, and it is rapid that patient recovers. (10) laparoscopic surgery reduce infection of incisional wound,When reducing Postoperative recurrent rate, reach the effect of Wicresoft. (11) laparoscopic surgery technical requirement is high, need to be relatively longPractise curve. Based on above feature, laparoscopic incision herniorrhaphy receives people's concern in recent years gradually, in the time for the treatment of incisional herniaMore and more universal. The method of the fixing sticking patch of laparoscope neoplasty has stitching completely, stitching completely, stitching and stitching and adhesive admittedlyFixed etc., there is no at present unified standard specification.
In the prior art, TYCO Healthcare discloses a kind of mirror cutting seam in patent application 200810009395.6Close device and disposable nail kit. JohnIsbellShipp discloses a kind of for fixing hernia patch in US2007/0038220A1Absorbed spiral nail, the described spiral nail that absorbs is made up of the copolymer of lactide and glycolide. Davol, Inc., Cranston,RI discloses the fixing method and apparatus of a kind of operation in US2007/0250064A1. SOFRADIMPRODUCTION, Trevoux (FR) discloses a kind of I shape operation anchor in US2003/0187465A1. OriginMedsystems, Inc.Menlopark, Calif discloses a kind of surgery spiral fixator in US5366479A. Above-mentioned fixingThe problems such as it is consuming time, inconvenient that the application of device has solved that suture repairs. Also can reduce losing blood and wound of patient simultaneously. TraditionSurgical fixator be staple type, the fixing distortion of staple type needs iron felt or other structures, structure is comparatively complicated, and valencyLattice are higher. Single-sided helix nail far-end has one to thrust a little, and near-end has a T shape bar, and T shape bar has been divided the diameter of spiral nail equally, carriesSupply a stress surface. The another kind of form of spiral nail is two-sided spiral, and far-end has two to thrust a little, and near-end has a connection strap,Connection strap has connected two spiral coils, has divided the diameter of two spiral coils equally simultaneously. In the prior art, fixer structure is commonBe disposable use, while operation in addition, may produce frictionally damage to tissue.
Summary of the invention
In order to solve the above-mentioned technical problem existing in prior art, the object of the present invention is to provide a kind of containing can absorb nailSoft tissue fixation devices.
In order to realize foregoing invention object, the present invention has adopted following technical scheme:
Contain the soft tissue fixation devices that can absorb nail, comprise handle, and tension spring, trigger, driven wheel, largeHelical gear, bevel pinion, nail pipe and drive rod; The first end of described tension spring is stuck on the fixed leg of described handle inwall,The second end of described tension spring is stuck on the upper end of described trigger, and upper end one side of described trigger is by a turning cylinder and described handThe inwall of handle connects rotationally, and the upper end opposite side of described trigger is equipped with the helical teeth matching with described driven wheel, described inTrigger stretches out and the lower end of described trigger is positioned at outside described handle in described handle; Described large helical gear with described in driveMoving gear arranges with one heart, and described large helical gear is by described driving gear drives; The external tooth of described large helical gear and described littleHelical gear external tooth coordinates; Described drive rod is driven by the turning cylinder of described bevel pinion, and described in sheathed outside described drive rodNail pipe, the first end of described nail pipe is arranged in described handle, and the second end of described nail pipe is arranged on outside described handle, described nailThe second end of pipe is removably connected with conduit, in described conduit, is provided with and can absorbs nail; On the described nail beam that absorbs nail, formThere is helicitic texture, and be provided with helical pitch spring on described helicitic texture.
In the present invention, on described conduit, be provided with lubricant coating. Described lubricant coating is set on conduit to be conducive to contain describedThere is the conduit of the soft tissue fixation devices that can absorb nail to send in tissue smoothly, and prevent adhesion. In prior artIn, described lubricant coating or Antiblock coating, for example silicone oil, as dimethyl silicone polymer etc. In the present invention, described conduitOn deposit the lubricant coating that contains Teflon, and the thickness of described lubricant coating is 3-5 μ m. Described lubricated compatiblizing coatings surfaceHardness is Hv500～Hv1000, and skin-friction coefficient is 0.1～0.05. Described lubricant coating also contains stabilization of polymer, described poly-Compound is selected from polymethyl methacrylate, polyacrylamide, polyacrylonitrile, polyetheramides, polyethyene diamine, Merlon, poly-Ketenes, polyvinylether, polyvinyl ester, polyvinylpyrrolidone, polyethylene, polypropylene, polytetrafluoroethylene (PTFE), polyolefin bulletGonosome, polyisobutene, fluorosilicone, CMC, PET, poly-valerate, carboxymethyl celluloseElement, hydroxyethylcellulose, cellulose butyrate, cellulose acetate-butyrate, ethyl-vinyl acetate copolymer, shitosan, and shell is poly-One or more in sugar derivatives. In described lubricant coating, contain alternatively antiseptic. Described antiseptic can be for example conventionalMoney base antiseptic or non-money base antiseptic. As the example of money base antiseptic, for example, can be silver-colored particle, carry based on the nature of glassThe silver antibacterial agent of body or the silver antibacterial agent based on Zeolite support. Described antiseptic can join combination by conventional mixed methodIn thing, and be dispersed in the lubricated compatiblizing coatings obtaining by coating. By use antiseptic can prevent or suppress to carry micro-Biological growth, thus prevent the infection causing because of fixing operation.
Wherein, the described nail that absorbs is made up of degradation material; Described degradation material is selected from poly-(L-lactide), poly-(D, L-Lactide), poly-(L-lactide-altogether-D, L-lactide), poly-(PLG), poly-(glycolide), poly-(L-thirdLactide-altogether-glycolide), poly-(glycolide-altogether-trimethylene carbonate), poly-(L-lactide-altogether-trimethylene carbonate), poly-(D,L-lactide-altogether-trimethylene carbonate), poly-(L-lactide-altogether-caprolactone), poly-(amino acid), poly-(6-caprolactone), poly-(6-Valerolactone), poly-(gamma-butyrolacton), poly-(beta-hydroxy-butanoic acid ester), poly-(DL-LACTIC ACID), PLLA, ethylene carbonate (1,3-bis-Butyl oxide link-2-ketone), propylene carbonate (4-methyl isophthalic acid, 3-dioxolan-2-one), carbonic acid 1, the sub-propyl ester of 3-(1,3-diox-2-ketone)And at least one in butylene carbonate (1,3-Dioxepane-2-ketone).
As preferably, poly-[carbonic acid (Aden ester-co-6-caprolactone) ester] that described degradation material comprises 10～15wt% (PBCL)Poly(D,L-lactide-co-glycolide (PLGA) with 80-90wt%; And described Poly(D,L-lactide-co-glycolide by PDLA andPGA is synthetic, and the mol ratio of described PDLA and PGA is 40: 60. As preferably, described degradation material also contains 1～5wt%N-hydroxy-succinamide sulfonate sodium.
Compared with prior art, the soft tissue fixation devices that can absorb nail that contains of the present invention has following beneficial effect:
The soft tissue fixation devices that can absorb nail that contains of the present invention is specially adapted to laparoscopic hernia repair operation, and has anti-The feature of adhesion, convenient and reliable operation; Described conduit is dismountable replacing part in the present invention, only needs to change conduit after useReusable.
Brief description of the drawings
Fig. 1 is the structural representation that contains the soft tissue fixation devices that can absorb nail of one embodiment of the invention.
Fig. 2 is the structure for amplifying schematic diagram at circle A place in Fig. 1.
Detailed description of the invention
Below with reference to specific embodiment, the soft tissue fixation devices that can absorb nail that contains of the present invention is done further and explainedState, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technical scheme.
As shown in Figure 1-2, contain the soft tissue fixation devices that can absorb nail described in the present embodiment, comprise handle 10, and pulling forceSpring 1, trigger 2, driven wheel 3, large helical gear 4, bevel pinion 5, nail pipe 6 and drive rod 7. Of described tension spring 1One end is stuck on the fixed leg of described handle 10 inwalls, and the second end of described tension spring 1 is stuck on the upper end of described trigger 2, instituteUpper end one side of stating trigger 2 is connected with the inwall of described handle 10 rotationally by a turning cylinder, the upper end of described trigger 2 anotherSide is equipped with the helical teeth matching with described driven wheel 3, described trigger 2 in described handle 10, stretch out and make described in pullThe lower end of machine 2 is positioned at outside described handle 10; Described large helical gear 4 and the concentric setting of described driven wheel 3, and described large helical gear4 drive by described driven wheel 3; The external tooth of described large helical gear 4 coordinates with the external tooth of described bevel pinion 5; Described drive rod 7Turning cylinder by described bevel pinion 5 drives, and the outer sheathed described nail pipe 6 of described drive rod 7, and the first end of described nail pipe 6 is establishedPut in described handle 10, the second end of described nail pipe 6 is arranged on outside described handle 10, and the second end of described nail pipe 6 is threadedThere is conduit 8, in described conduit 8, be provided with and can absorb nail 9. On the described nail beam that absorbs nail, be formed with helicitic texture, and described inOn helicitic texture, be provided with helical pitch spring, many nails that absorb only pack into and have spiral fluted according to the order of connecting end to end specificallyIn conduit, can absorb the head of nail towards the outlet of conduit. In the present embodiment, described trigger, tension spring, driven wheel,Large helical gear and bevel pinion form the drive unit that contains the soft tissue fixation devices that can absorb nail of the present invention. Logical when useCross cocking, can under the driving of described drive unit, drive drive rod to rotate, and then in the time that laparoscopic hernia repair is performed the operation,The described nail that absorbs one by one can be launched to described conduit.
In the present invention, on described conduit, be provided with lubricant coating. Described lubricant coating is set on conduit to be conducive to contain describedThere is the conduit of the soft tissue fixation devices that can absorb nail to send in tissue smoothly, and prevent adhesion. In prior artIn, described lubricant coating or Antiblock coating, for example silicone oil, as dimethyl silicone polymer etc. In the present invention, described conduitOn deposit the lubricant coating that contains Teflon, and the thickness of described lubricant coating is 3-5 μ m. Described lubricated compatiblizing coatings surfaceHardness is Hv500～Hv1000, and skin-friction coefficient is 0.1～0.05. Described lubricant coating also contains stabilization of polymer, described poly-Compound is selected from polymethyl methacrylate, polyacrylamide, polyacrylonitrile, polyetheramides, polyethyene diamine, Merlon, poly-Ketenes, polyvinylether, polyvinyl ester, polyvinylpyrrolidone, polyethylene, polypropylene, polytetrafluoroethylene (PTFE), polyolefin bulletGonosome, polyisobutene, fluorosilicone, CMC, PET, poly-valerate, carboxymethyl celluloseElement, hydroxyethylcellulose, cellulose butyrate, cellulose acetate-butyrate, ethyl-vinyl acetate copolymer, shitosan, and shell is poly-One or more in sugar derivatives. In described lubricant coating, contain alternatively the antiseptic of 0.01-1.5wt%. Described antiseptic exampleAs being conventional money base antiseptic or non-money base antiseptic. As the example of money base antiseptic, can be for example silver-colored particle,Silver antibacterial agent based on nature of glass carrier or the silver antibacterial agent based on Zeolite support. Described antiseptic can be by conventional mixing sideMethod joins in composition, and is dispersed in the lubricated compatiblizing coatings obtaining by coating. By use antiseptic can prevent orSuppress the microbial growth carrying, thereby prevent the infection causing because of fixing operation.
In the present invention, the described nail that absorbs is made up of degradation material; As exemplarily, described degradation material is selected from poly-(L-lactide), PLA, poly-(L-lactide-altogether-D, L-lactide), poly-(PLG),Poly-(glycolide), poly-(L-lactide-co-glycolide), poly-(glycolide-altogether-trimethylene carbonate), poly-(L-lactide-altogether-SanyaMethyl carbonic), poly-(D, L-lactide-altogether-trimethylene carbonate), poly-(L-lactide-altogether-caprolactone), poly-(amino acid),Poly-(6-caprolactone), poly-(δ-valerolactone), poly-(gamma-butyrolacton), poly-(beta-hydroxy-butanoic acid ester), poly-(DL-LACTIC ACID), PLLA,Ethylene carbonate (DOX-2-ketone), propylene carbonate (4-methyl isophthalic acid, 3-dioxolan-2-one), carbonic acid 1,3-Asia thirdAt least one in ester (1,3-diox-2-ketone) and butylene carbonate (1,3-Dioxepane-2-ketone).
As with improvement, poly-[carbonic acid (Aden ester-co-6-caprolactone) ester] that described degradation material comprises 10～15wt% (PBCL)Poly(D,L-lactide-co-glycolide (PLGA) with 80-90wt%; And described Poly(D,L-lactide-co-glycolide by PDLA andPGA is synthetic, and the mol ratio of described PDLA and PGA is 40: 60. As preferably, described degradation material also contains 1～5wt%N-hydroxy-succinamide sulfonate sodium. Utilize hanks' balanced salt solution to carry out static degradation experiment and show, by addingPBCL can make this degradation material weightlessness reach time of 90% and be stabilized in 80～90 days, has excellent stability to degradation,And excitant is little, compatibility is good, adds the healing that N-hydroxy-succinamide sulfonate sodium is conducive to promote hernia.
In the present invention, the described nail that absorbs is mixed, is melt extruded with the technique of machining and prepare by raw material. AsExemplarily, the raw material components of degradation material is dropped in batch mixer and mixed, mix; When batch mixing, controlling temperature existsBelow 80 DEG C. The cooling rear employing screw extruder of compound melt extrudes, and each section of temperature of described single screw extrusion machine is150～210 DEG C. Gained melt blending material is processed into pole after extruding, and Mechanics Performance Testing shows that the hot strength of described pole canTo reach 50～60MPa, bending strength can reach 100-120MPa. By the pole after described stretching by the certain length section of being cut intoAfter, carry out lathe processing according to thread parameter and bolt structure, described in can obtaining, can absorb nail. Described can suction in the present inventionThe shape of receiving nail adopts the conventional bolt structure in this area, if the first half of global shape is that taper shape, latter half areCylindricality or entirety are truncated cone-shaped, and while being convenient to perform the operation, guide pin is accurately located it. Double thread parameter is not particularly limited, and is preferably darkAnd blunt screw thread.
For the ordinary skill in the art, specific embodiment is just exemplarily described the present invention, obviously originallyInvention specific implementation is not subject to the restrictions described above, as long as adopted various that method of the present invention design and technical scheme carry outThe improvement of unsubstantiality, or without improving, design of the present invention and technical scheme are directly applied to other occasion, all at thisWithin bright protection domain.
Claims (9)
1. contain the soft tissue fixation devices that can absorb nail, it is characterized in that: comprise handle, and tension spring, trigger,Driven wheel, large helical gear, bevel pinion, nail pipe and drive rod; The first end of described tension spring is stuck in described handle inwallFixed leg on, the second end of described tension spring is stuck on the upper end of described trigger, upper end one side of described trigger turns by oneMoving axis is connected rotationally with the inwall of described handle, and the upper end opposite side of described trigger is equipped with described driven wheel and matchesHelical teeth, described trigger stretches out and the lower end of described trigger is positioned at outside described handle in described handle; Described tiltedly largeGear arranges with described driven wheel is concentric, and described large helical gear is by described driving gear drives; Described large helical gearExternal tooth coordinates with the external tooth of described bevel pinion; Described drive rod is driven by the turning cylinder of described bevel pinion, and described drivingThe outer sheathed described nail pipe of bar, the first end of described nail pipe is arranged in described handle, and the second end of described nail pipe is arranged on described handOutside handle, the second end of described nail pipe is removably connected with conduit, in described conduit, is provided with and can absorbs nail; The described nail that absorbsNail beam on be formed with helicitic texture, and be provided with helical pitch spring on described helicitic texture.
2. the soft tissue fixation devices that can absorb nail that contains according to claim 1, is characterized in that: heavy on described conduitLong-pending have the lubricant coating that contains Teflon, and the thickness of described lubricant coating is 3-5 μ m.
3. the soft tissue fixation devices that can absorb nail that contains according to claim 2, is characterized in that: described lubricated compatibleCoating surface hardness is Hv500～Hv1000, and skin-friction coefficient is 0.1～0.05.
4. the soft tissue fixation devices that can absorb nail that contains according to claim 2, is characterized in that: described lubricant coatingAlso contain stabilization of polymer, described polymer be selected from polymethyl methacrylate, polyacrylamide, polyacrylonitrile, polyetheramides,Polyethyene diamine, Merlon, polyethylene ketone, polyvinylether, polyvinyl ester, polyvinylpyrrolidone, polyethylene, polypropylene,Polytetrafluoroethylene (PTFE), polyolefin elastomer, polyisobutene, fluorosilicone, CMC, PET,Poly-valerate, carboxymethyl cellulose, hydroxyethylcellulose, cellulose butyrate, cellulose acetate-butyrate, ethyl-vinyl acetate are commonPolymers, shitosan, and one or more in chitosan derivatives.
5. the soft tissue fixation devices that can absorb nail that contains according to claim 2, is characterized in that: described lubricant coatingAlso contain antiseptic.
6. the soft tissue fixation devices that can absorb nail that contains according to claim 1, is characterized in that: described absorptionNail is made up of degradation material.
7. the soft tissue fixation devices that can absorb nail that contains according to claim 6, is characterized in that: described degradableMaterial is selected from poly-(L-lactide), PLA, poly-(L-lactide-altogether-D, L-lactide), poly-(D, L-lactide-Altogether-glycolide), poly-(glycolide), poly-(L-lactide-co-glycolide), poly-(glycolide-altogether-trimethylene carbonate), poly-(L-thirdLactide-altogether-trimethylene carbonate), poly-(D, L-lactide-altogether-trimethylene carbonate), poly-(L-lactide-altogether-caprolactone),Poly-(amino acid), poly-(6-caprolactone), poly-(δ-valerolactone), poly-(gamma-butyrolacton), poly-(beta-hydroxy-butanoic acid ester), poly-(DL-LACTIC ACID),PLLA, ethylene carbonate (DOX-2-ketone), propylene carbonate (4-methyl isophthalic acid, 3-dioxolan-2-one), carbonAt least one in the acid sub-propyl ester of 1,3-(1,3-diox-2-ketone) and butylene carbonate (1,3-Dioxepane-2-ketone).
8. the soft tissue fixation devices that can absorb nail that contains according to claim 6, is characterized in that: described degradableMaterial comprises that 10～15wt%'s gathers [carbonic acid (Aden ester-co-6-caprolactone) ester] (PBCL) and the polylactic acid-glycolic base second of 80-90wt%Acid copolymer (PLGA); And described Poly(D,L-lactide-co-glycolide is synthetic by PDLA and PGA, described PDLA and PGAMol ratio be 40: 60.
9. the soft tissue fixation devices that can absorb nail that contains according to claim 8, is characterized in that: described degradableMaterial also contains the N-hydroxy-succinamide sulfonate sodium of 1～5wt%.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051820.2A CN105596044B (en) | 2016-01-25 | 2016-01-25 | Soft tissue fixation devices containing absorbable screw |
| US15/142,952 US10702264B2 (en) | 2016-01-25 | 2016-04-29 | Fixing device for soft tissue |
| EP16168443.6A EP3195811B1 (en) | 2016-01-25 | 2016-05-04 | Fixing device for soft tissue |
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| CN201610051820.2A CN105596044B (en) | 2016-01-25 | 2016-01-25 | Soft tissue fixation devices containing absorbable screw |
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| CN105596044A true CN105596044A (en) | 2016-05-25 |
| CN105596044B CN105596044B (en) | 2019-01-25 |
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|---|---|---|---|---|
| CN101347348A (en) * | 2008-08-28 | 2009-01-21 | 上海创亿医疗器械技术有限公司 | Spiral thread nail for repair technique |
| US20090105535A1 (en) * | 1991-10-18 | 2009-04-23 | Green David T | Apparatus for applying surgical fasteners to body tissue |
| WO2015149292A1 (en) * | 2014-04-02 | 2015-10-08 | Covidien Lp | Surgical fastener applying apparatus, kits and methods for endoscopic procedures |
| US20150305738A1 (en) * | 2014-04-28 | 2015-10-29 | Covidien Lp | Surgical fastener having a cap |
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2016
- 2016-01-25 CN CN201610051820.2A patent/CN105596044B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090105535A1 (en) * | 1991-10-18 | 2009-04-23 | Green David T | Apparatus for applying surgical fasteners to body tissue |
| CN101347348A (en) * | 2008-08-28 | 2009-01-21 | 上海创亿医疗器械技术有限公司 | Spiral thread nail for repair technique |
| WO2015149292A1 (en) * | 2014-04-02 | 2015-10-08 | Covidien Lp | Surgical fastener applying apparatus, kits and methods for endoscopic procedures |
| US20150305738A1 (en) * | 2014-04-28 | 2015-10-29 | Covidien Lp | Surgical fastener having a cap |
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| CN105596044B (en) | 2019-01-25 |
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