Background technique
At present in medical field, Minimally Invasive Surgery inspection, diagnosis and treatment have been subjected to the height affirmative of industry, wherein medicalFor endoscope as a member in Minimally Invasive Surgery instrument, it can go deep into patient's body, can more intuitively observe lesions position, diagnosis knotFruit is accurate, while small to injury of human, mitigates the pain of patient, and patient is allowed more preferably to restore faster.
Medical endoscope especially soft lens is equipped with imaging system inside it, passes the components such as illuminating apparatus, hydrophone channel,Because it forms the particularity of components material and structure, do not allow to handle by traditional high temperature and high pressure steam sterilization.MeshThe sterilization method that preceding hospital selects is medicining liquid dipping disinfection and low-temperature plasma sterilization, but medicining liquid dipping disinfection can notDisinfection completely, especially as hydrophone channel interior there may be medicining liquid dipping less than place.And low-temperature plasma sterilization is thenHigher requirement itself proposes for endoscope, processing can there are different depths to endoscope using low-temperature plasma sterilizationDamage, according to incompletely statistics, hospital retracts in the endoscope reprocessed, and 30% endoscope is damaged because of sterilization processingBad.
Therefore, many endoscopes are outer all in accordance with there is sheath now, can be by the body of patient by installing disposable shield sleeveLiquid, blood, organ-tissue etc. are isolated entirely from endoscope, and operation as part directly processing is abandoned, avoids interior after the completionSight glass disinfection is not exclusively or some stubborn bacterias are difficult to cross-infection caused by being killed.
Such as Chinese patent: " a kind of endoscope (CN201520840333.5) with disposable protective jacket ", including controlPortion and insertion section, the insertion section are coated with disposable protective jacket；Disposable shank set is equipped in the disposable protective jacketPipe, disposable shank casing is interior to place shank, and shank is connected with control unit；The rear end of the once property protective jacket is openingEnd, front end are equipped with heat-insulation transparent cover；The radial direction of the heat-insulation transparent cover and disposable protective jacket is inclined to set.But it is above-mentionedThe heat-insulation transparent cover of structure guard leading end will affect image definition, to influence surgical effect.
Summary of the invention
The present invention provides a kind of structure is simple, image imaging clearly effectively assists doctor to diagnose and perform the operation, andIt can effectively prevent the endoscope with disposable shield sleeve pipe of cross-infection；Solve endoscope existing in the prior art due toIncrease protecting pipe, cause to be imaged it is unclear, influence diagnosis and treatment the technical issues of.
The present invention additionally provides that a kind of safety is good simultaneously, and the stable support of hose is good, facilitates the endoscope of operation；SolutionDetermined it is existing in the prior art transparent component is installed in guard leading end, be easy to fall off, the support of the hose of the insertion section of endoscopeEffect is bad, it has not been convenient to be inserted into the technical problems such as sheath.
Above-mentioned technical problem of the invention is solved by following technical proposals: the endoscope with protecting pipe, includingInsertion section and operation portion are socketed with protecting pipe outside insertion section, and the front end of the protecting pipe is equipped with eyeglass, in insertion sectionLeading end portion be equipped with guide lighting channel and image transmitting channel, light guide bundles are installed in guide lighting channel, the front end installation of light guide bundlesThere is diverging glass, diverging glass is located on the inside of eyeglass, and the light of light guide bundles is after dissipating glass again by the mirror of protecting pipe front endPiece reflection, the light after reflection are located at outside image transmitting channel.The light guide bundles of transmitting light, hair are installed in the leading end portion of endoscopeGlass and imaging sensor etc. are dissipated, the light that light source issues passes through the conduction of light guide bundles, using diverging glass, by light by settingThe dispersion angle of meter dissipates, and to illuminate check point, imaging sensor receives the image for illuminating position, passes after being converted into electric signalIt is presented to display.In operational use, endoscope leading end portion is close to the high lenticular sheet of sheath leading end portion, is opening equipmentAfterwards, light is through dissipating glass, in penetrating excessively high lenticular sheet, has sub-fraction light through high lenticular sheet end face reflection, hairLight after penetrating is located at outside image transmitting channel, to the light of diverging will not be entered in imaging sensor, so that imaging effectFruit is good, and clarity is high, effectively doctor is helped to carry out diagnosing and treating.Meanwhile can also have in the eyeglass of the front end of sheath installationA possibility that effect prevents pollutant from entering in endoscope, reduces cross-infection.Protecting pipe, Ke Yiyou are installed outside endoscopeEffect prevents cross-infection, and endoscope does not need to carry out disinfection again, reduces cost, improve service life.
Preferably, the necessary all standing of light of the diverging glass after diverging is tested the channel of distance L, as a result,Wherein, L is sheath leading end portion at a distance from inspection target, and S is to check target instituteIn circular diameter, d is guide-lighting beam diameter, and d1 is the off-centered lateral distance of light guide bundles, and d2 is the off-centered longitudinal direction of light guide bundlesDistance；It is located at the requirement outside image transmitting channel according to transmitting light, as a result, Htan (β/2) n < D/2, D is diverging glassFor glass at a distance from the edge in image transmitting channel, H is the thickness of the eyeglass in guard leading end portion, and n is the eyeglass of guard leading endRefractive index, above-mentioned parameter L, D, S, H, n, d, d1, d2 need to be chosen to be datum according to practical operation, to obtain divergence angle beta.After the parameter needed according to actual diagnosis process choosing oneself, the size of the angle of divergence can be calculated, so that selection is notSame diverging glass realizes the removal of light evil.Clear effect is good, and image effect is good.
Preferably, the insertion section includes insertion tube and interconnecting piece, interconnecting piece includes outer connector and interior connector,The outer connector is connected with protecting pipe, and the interior connector is connected with operation portion.The end construction of insertion tube can be simultaneouslyRealize the connection with sheath and operation portion, structure is simple.Outer connector is connected through a screw thread with protecting pipe.
More preferably, the interior connector is anti-bending structure, and the anti-bending structure includes jacket body, sheathBody is located at outside insertion tube, and bending spring is equipped in jacket body, bends spring between insertion tube and jacket body, and described insertsEnter and is equipped with stainless steel wire in pipe.The component of endoscope insertion part and leading end portion as insertion patient's human body, pursues always functionDirection more complete, that insertion tube is more soft is developed, with the development of science and technology, imaging sensor, light source, soft pincers etc. can be accomplishedVery small, this has made the insertion tube of protection and guiding role, also becomes thin, its external diameter accomplishes within 3mm that this is right at presentMore stringent requirements are proposed for insertion tube, and outer diameter is thinner, and tube wall is thinner, this also results in insert tube of endoscope, and there are wind easy to breakDanger.
In operative process, insert tube of endoscope is inserted into human body, and with human body cavity migration itself, insertion tube itself is gathered aroundHave curved flexible and is hardly damaged.But in the position that insertion tube is connect with endoscope handle, be insertion tube flexibility withThe position of the stiffness transition of operation portion is analyzed according to the transmitting of power, and insertion tube is easily bent and damaged by this position, so, thisPlace needs an anti-bending structure.There is stainless steel wire to inlay in the shape of a spiral in the tube wall of insertion tube, effect is to increase bending resistance energyPower plays a supportive role to tube wall, and tube wall is made to be not easy to flatten and bend.Increase rigidity simultaneously.To slotting after packed and transported and operationAfter the bending for entering pipe, and restore plumbness.
More preferably, it is equipped with insertion tube passage and hydrophone channel in the protecting pipe, is inserted into tube passage and hydrophone is logicalRoad is parallel to each other, and the eyeglass is integrally formed in the front end of insertion tube passage.Hydrophone channel is the channel leaked water with instrument.The high transparency mirror plate layers of front end are made with two cavities by integrated molding technology, and old product leading end portion is omitted and is glued admittedlyThe process for changing eyeglass, saves artificial cost, saves the handover cured time, improves production efficiency.It can guarantee simultaneously high saturatingMirror plate layers and the perfection of insert tube of endoscope cavity seal, it is positioned by high-precision equipment, and position is accurate, solid and reliable.And it protectsSet leading end portion is as the component directly contacted with patient body fluid etc., if eyeglass is mounted on leading end portion head end using adhesive technology,This for glue nontoxicity, be glued that reliability requirements are all high, and if any careless, eyeglass falls off would be possible in inside of human bodyJeopardize patient vitals.
Preferably, the cross section of the insertion tube passage is special-shaped hole shape, the profiled holes include a circleCambered surface, the two sides of arc surface are vertical plane, and two vertical planes reconnect a horizontal plane by circular arc.Insert tube of endoscope channelIt is designed using the profiled holes of half of circular arc, compared to the cavity for section being full circle, the special-shaped wheel of irregularly-shaped hole and insert tube of endoscopeExterior feature is consistent, and can play the role of guiding, prevents insert tube of endoscope from cavity inward turning transferring that endoscope is caused to can not find direction.
Preferably, water passage and instrument channel are combined into one by the hydrophone channel, the cross section in hydrophone channelFor special-shaped hole shape, the profiled holes include an arc surface, and the two sides of arc surface are vertical plane, and two vertical planes pass through circleArc reconnects a horizontal plane.Water passage and instrument channel are combined into one into a hydrophone channel, when in use, cooperation threeChannel female Luer can be realized instrument and note, water suction in operation requirement and share.The insert tube of endoscope for being inserted into human body is thinnerIt is small, to the damage of patient with regard to smaller, postoperative recovery faster, so, separated compared to water passage and instrument channel, channel is closedTwo is compact for one design structure, can accomplish insertion tube more tiny.The section in hydrophone channel uses the abnormity of half of circular arcHole design, is compared and completely circular structure, its main feature is that the water flowing in periphery gap is empty whens being inserted into laser beam or instrument etc. in cavityBetween it is bigger.
Preferably, one end of the protecting pipe is equipped with hydrophone channel entrance and insertion tube channel entrance, the waterAcute angle is equipped between device channel entrance and insertion tube channel entrance, channel is arc-shaped at hydrophone channel entrance.In medical operatingIn, endoscope is often configured with Bladder stone, soft pincers, calculus catching net-like means etc. and is used cooperatively, these accessories are all semi-soft material, can be withAs flexible endoscope is bent insertion in the natural cavity of human body, but, such curved limited angle of instrument, as promise is bentAngle too small is then easy folding bad instrument.Hydrophone channel entrance of the invention is process by high-accuracy mold injection, protecting pipe oneBody molding making, hydrophone channel entrance inner wall smooth are no to splice caused step gap.It is designed using orthodrome, instrument existsIt, can be and smaller for the damage of instrument in more smooth insertion channel when being inserted into channel.
Preferably, the protecting pipe is disposable multichannel tube body.Sheath is disposably can be wholeIt abandons, reduces cost, guarantee the multiple normal use of endoscope.
Therefore, the endoscope with protecting pipe of the invention has following advantages: structure is simple, can effectively prevent light evilIt generates, improves the effect of imaging, doctor is helped to carry out accurate diagnosing and treating；The high lenticular sheet in guard leading end portion passes through noteModeling is integrally formed with sheath, and safety is good, the anti-bending structure of insertion section junction, improves the rigidity of endoscope, support effectFruit is good.
Embodiment:
As shown in Figure 1, the endoscope of protecting pipe, including sequentially connected leading end portion 9, insertion section 8 and operation portion 6 are had,Operation handle 5 is installed on operation portion 6.Protecting pipe 2 is socketed with outside insertion section 8, it is logical that one end of protecting pipe is provided with hydrophoneRoad import 3 and insertion tube channel entrance 4 are equipped with eyeglass 7 in the front end of protecting pipe 1, eyeglass 7 with a thickness of 0.1-3mm.
As shown in Fig. 2, the leading end portion in insertion section 8 is equipped with guide lighting channel and image transmitting channel, pacify in guide lighting channelEquipped with light guide bundles 12, the front end of light guide bundles 12 is equipped with diverging glass 11, and diverging glass 11 is located at 7 inside of eyeglass, light guide bundles 12Light after dissipating glass again by the lens reflecting of protecting pipe front end, form divergence angle beta.Image transmitting is equipped in channelImaging sensor 10.
As shown in figure 3, the necessary all standing of light of the diverging glass 11 after diverging is tested the channel of distance L, as a result,Wherein, L is sheath leading end portion at a distance from inspection target, and S is to check target instituteIn circular diameter, d is guide-lighting beam diameter, and d1 is the off-centered lateral distance of light guide bundles, and d2 is the off-centered longitudinal direction of light guide bundlesDistance；It is located at the requirement outside image transmitting channel according to transmitting light, as a result, Htan (β/2) n < D/2, D is diverging glassFor glass at a distance from the edge in image transmitting channel, H is the thickness of the eyeglass in guard leading end portion, and n is the eyeglass of guard leading endRefractive index, above-mentioned parameter L, D, S, H, n, d, d1, d2 need to be chosen to be datum according to practical operation, so that divergence angle beta is obtained,By the suitable diverging glass of numerical value selection of divergence angle beta, the removal of light evil is realized.
As shown in Figure 4 and 5 and 6, tube passage 13 and hydrophone channel 14,7 note of eyeglass are inserted into parallel being disposed in protecting pipe 2Modeling is molded over the front end of insertion tube passage 13.The cross section for being inserted into tube passage 13 is special-shaped hole shape, and profiled holes include oneArc surface, the two sides of arc surface are vertical plane, and two vertical planes reconnect a horizontal plane by circular arc.Hydrophone channel 14 will lead toAquaporin is combined into one with instrument channel, and the cross section in hydrophone channel 14 is also special-shaped hole shape.
As shown in fig. 7, forming acute angle, hydrophone between the hydrophone channel entrance 3 and insertion tube channel entrance 4 of protecting pipe one endChannel is arc-shaped at channel entrance 3.Designed using orthodrome, instrument 15 when being inserted into channel, can in more smooth insertion channel,And it is smaller for the damage of instrument 15.
As shown in figure 8, insertion section includes insertion tube 18 and interconnecting piece, interconnecting piece includes outer connector 16 and interior connector,Outer connector 16 is connected with protecting pipe by screw thread, and interior connector is connected with operation portion 6.Interior connector is anti-bending structure, is preventedBending structure includes jacket body 17, and jacket body 17 is located at outside insertion tube 18, and bending spring 19 is equipped in jacket body 17, bends bulletSpring 19 has stainless steel wire 20 to inlay in the shape of a spiral, effectively between insertion tube 18 and jacket body 17 in the tube wall of insertion tube 18It prevents stress to concentrate, improves bend resistance ability.