CN1122684A - Laser balloon catheter - Google Patents
Laser balloon catheter Download PDFInfo
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- CN1122684A CN1122684A CN 94118137 CN94118137A CN1122684A CN 1122684 A CN1122684 A CN 1122684A CN 94118137 CN94118137 CN 94118137 CN 94118137 A CN94118137 A CN 94118137A CN 1122684 A CN1122684 A CN 1122684A
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Abstract
The laser ball shaped duct is used for emitting laser ray in a ball, the laser ray is conducted via optical fiber and irradiated on the tissue. It comprises laser emitter, a laser emitter head having optical fibre or laser ray transmission element, a first expandable ball used for transmission of laser ray from laser emitter onto the tissue, a first fluid channel used for supplying fluid to the first ball to make it expand and draining away the fluid to make it contract, a second expandable ball located at the front of the first ball, a second fluid channel for supplying fluid to the second ball to make it expand and draining away the fluid to make it contract.
Description
The present invention relates to a kind of laser balloon catheter, it can insert body cavity, esophagus for example, and stomach is in the prostate, so that carry out laser therapy.
Laser balloon catheter is used to open the obstruction part of blood vessel, carries out thermal therapeutical with laser balloon catheter with the laser irradiation cancerous tissue.
For example, at United States Patent (USP) NO.4, in 512,762, such laser balloon catheter structure is disclosed.In this patent, provide around fibre-optic lumen pipe, and provide a bulb to center on front end at fibre-optic front end.
At United States Patent (USP) NO.4, in 799,479, another kind of guide-tube structure is disclosed, wherein, there is an acoustic sensor in the bulb, with the vaporization of control tissue.
At United States Patent (USP) NO.4, a kind of conduit is disclosed in 878,492, wherein, one pipe is arranged at the ball front end, liquid flows by the through hole on the pipe.
Yet, in operation during conduit, only have the laser balloon catheter of a ball may from urethra, deviate from unfriendly or move.Even in advance ball is located in the prostate, ball may cause the laser irradiation sphincter to moving of urethral orifice, and makes it be subjected to the hot injury.
So, the purpose of this invention is to provide a kind of laser balloon catheter, it can be set on the throne, then can make laser only shine prostatic required part, and prevented owing to conduit is deviate from or move to urethral orifice to cause sphincteral damage from urethra.
Another object of the present invention provides a kind of laser balloon catheter, when producing urine when treatment, can discharge urine by conduit.
In order to overcome above-mentioned problem, the invention provides a kind of laser balloon catheter, be used for launching laser at a ball, laser is by the optical fibers transmission, and use laser irradiation tissue by ball, comprise laser beam emitting device, it has a described fibre-optic Laser emission auspicious, or one is accepting the element of laser with auspicious the transmitted laser of the optical fibers emission of shining it; Around being used for laser from first inflatable ball of discharger biography to the laser beam emitting device of tissue; Liquid is fed to first fluid passage that first ball makes its expansion and makes its contraction from drain wherein; Be positioned at second inflatable ball of the described first ball front end; With liquid is fed to second ball and it is expanded and drain makes second fluid passage of its contraction.
After laser balloon catheter being inserted for example urethra, infeed liquid to first ball, preferably cooling water makes its expansion, and is same, infeeds liquid, and preferably cooling water expands second ball.
Laser from laser beam emitting device is radiated at target tissue through first ball, and for example on the prostate, laser beam emitting device comprises that fibre-optic transmitting terminal or is positioned at the laser transfer element of optical fibers transmitting terminal.So prostate is heated to a temperature that makes tissue necrosis.Soon, prostate will restore after operation.
In the present invention, because second ball is positioned at the front of first ball, the cervical region between first and second balls is positioned between the bladder neck, and laser balloon catheter is engaged with the cervical region of bladder, and prevents that laser balloon catheter is deviate from from bladder in the operation.Urine can be discharged by second ball that is arranged in bladder.
Otherwise if only use a ball, when the operation conduit, laser balloon catheter may be deviate from from urethra, or possible displacement.Because must avoid the position outside the prostate, particularly sphincteral hot injury will pre-determine the length of ball according to prostatic length.If after location, prostatic bulb, ball is to the urethra displacement that enters the mouth, and laser may shine sphincter partly, and causes sphincteral hot injury.
Because the location of laser balloon catheter makes the cervical region between first and second balls lean against the cervical region of bladder, and prevent moving of laser balloon catheter.This has just prevented sphincteral hot injury reliably.
Be easy to make optical fibers to break because applied excessive power.So centering on fibre-optic pipe guide with one is effective with the protection optical fibers.Space in the pipe guide can be used as the passage of a liquid, is used to make first ball to expand.
At the laser beam emitting device front end one connecting device is arranged.By the flexible communication apparatus that can transmit laser connecting device is linked to each other with pipe guide, be fixed in connecting device with front end with first ball.It provides a structure that can make first ball expand or shrink.Apply an insertion force by communication apparatus connecting device is evened up, can make this conduit insert target tissue reposefully.
Pipe guide can be made a co-axial double-decker.By making first pipe guide center on optical fibers and making second pipe guide around the first pipe guide periphery, the gap between first and second pipe guides can be used as the first fluid passage, is used to make first ball to expand.Second pipe guide can be fixed in the end of first ball.Connecting device can be used as the device of fixing second ball.
According to the present invention, a kind of laser balloon catheter also is provided, be used for launching laser at a ball, laser is by the optical fibers transmission, by the laser irradiation tissue of ball transmission, comprise, laser beam emitting device, it has a fibre-optic Laser emission end, or one is positioned at and accepts the laser transfer element of laser with the optical fibers transmitting terminal launched, one first inflatable ball is around laser beam emitting device, with laser from discharger to organized delivery; One first fluid passage is used for that fluid is fed to first ball and makes its expansion, and fluid is discharged make its contraction from ball; Be positioned at forward second inflatable ball of first ball; One second fluid passage is used for that fluid is fed to second ball and makes its expansion and discharge fluid make its contraction; Be positioned at the forward connecting device of laser beam emitting device; Communication apparatus one first flexibility and that can transmit laser links to each other connecting device with pipe guide; Be positioned at the forward tube head device of connecting device; With second communication apparatus, the tube head device is linked to each other with connecting device; The front end of first ball is fixed in connecting device; Before second ball and bottom is individually fixed in tube head device and connecting device.
When laser balloon catheter inserts urethra and bladder, from around fibre-optic first pipe guide and around second pipe guide of first conduit insertion force be delivered to communication apparatus reposefully, connecting device, second communication apparatus arrives the tube head device then.So can insert reposefully.Because first communication apparatus is by the material manufacture that can transmit laser, so laser through the first communication apparatus transmission, and is radiated on the target tissue through first ball.
First communication apparatus is preferably tubular, and forms an intercommunicating pore on its wall.So second pipe guide is around first pipe guide.Fluid, for example water infeeds space between first and second conduits continuously first ball is expanded.Partly fluid imports communication apparatus from intercommunicating pore, and returns first pipe guide and discharge, and cools off the space in first ball continuously.Water can reverse flow.
The tube head device has the through hole that passes its extension.Through hole is preferably opened at the one end, and links to each other with a passing away that leads to outside the urethra.When treatment urine being arranged, urine energy via through holes and urinary pathway discharge.
Urinary pathway is extensible through the space between first ball and first and second pipe guide
Fig. 1 shows the integral body of LASER Illuminator System of the present invention;
Fig. 2 is the sectional side elevation of laser balloon catheter front-end architecture;
Fig. 3 is the main amplification sectional side elevation partly of catheter proximal end;
Fig. 4 is the sketch map of holder;
Fig. 5 is the sketch map of prostate treatment;
Fig. 6 carries out and the temperature distributing curve diagram of urethra inwall depth direction when not forcing to cool off;
Fig. 7 is the sectional side elevation of a chip as the embodiment of Laser emission end;
Fig. 8 is a sketch map, has shown the narrow of laser balloon catheter being inserted blood vessel;
Fig. 9 is a sketch map, has shown the narrow with the laser irradiation blood vessel;
Figure 10 is the sectional side elevation of another laser balloon catheter structure.
Present invention is described below by embodiment and with reference to accompanying drawing.
Fig. 1 has shown whole laser balloon catheter system, and its front end has first and second balls 1 and 2, to insert first conduit 12 and second conduit 14 around first conduit 12 that conduits 10 have an inside.One temperature sensor lead, 16, one evacuating catheters 18 and one second ball expansion cooling fluid supply pipe 202 are arranged between first and second conduits 12 and 14.Temperature sensor lead 16 links to each other with joint 22.The signal of expression temperature is delivered to temperature control equipment 24 with driving laser generator 26 by joint 22.When urinating when operation, urine is discharged by evacuating catheter 18.For example, water W2 feeds to the second ball expansion cooling fluid supply pipe 22.
When the liquid that is used in first bulb 1 of expanding by circulating pump 30, for example water W1 is after cooling water tank 28 is fed to pipe 32, and it passes through the Clearance Flow between first and second conduits 12 and 14, and is used to make first ball 1 to expand, afterwards, flow into first conduit 12 and return cooling water tank 28 again.Water in the cooling water tank is adjusted to one and gives fixed temperature.
From the laser of laser generator 26, preferably Nd-YAG laser transmits by joint 36 and optical fibers 38.
The front-end architecture of laser balloon catheter is shown in Fig. 2.Optical fibers 38 is arranged in first conduit 12, and this conduit comprises the pipe of system such as a polyethylene.The thermal protection pipe 40 that one high rigidity is arranged in the front end of first conduit 12.One metal holder 42 is arranged, with the fixing front end of optical fibers 38 in protecting tube 40.
Fig. 3 and 4 has shown the fixing means of optical fibers 38.Holder 42 front have partly 42A of a garden shape, and in rear end side one flat fixed part 42B are arranged.Garden shape partly has through hole 42C in 42 both sides.Holder 42 is plated with reflective metals, and is for example golden, in order to reflector laser.Optical fibers 38 passes fixed part 42B and garden shape part 42A.Stretching in the garden outer optical fibers 38 of shape part 42A front end does not have coating, so that its core 38A exposes.So laser is launched from core 38A.In this case, laser is with the front end emission of higher percentage ratio from core 38.For make laser from the side of core with higher ratio emission, core is processed as a rough surface, on the regional Z of Fig. 3 coated with the thin film that comprises diffusion material, or coated with comprising for example thin film of carbon of extinction powder, so that luminous energy is become heat energy.
The Laser emission end has a joint 44, and transmitting terminal is the front portion that extends outside the optical fibers front end.The part 44A that joint 44 rear ends have a diameter to reduce.First connecting leg, 46 cross-over connections that can conduct laser of one plastics are between reduced diameter portion part 44A periphery and protecting tube 40.First connecting leg 46 is positioned at protecting tube 40 outer surfaces, with first conduit, 12 front end adjacency.There is an intercommunicating pore 46A appropriate location of first connecting leg 46.In first connecting leg 46, between reduced diameter portion part 44A rear end and protecting tube 40 front ends, a helical spring 48 is arranged.The plating of helical spring 48 outer surfaces is with laser reflective film, and is for example golden.Reduced diameter portion part 44A rear end face is coated with laser reflective film, for example gold plating 44B.In most preferred embodiment of the present invention, laser scattering on first connecting leg 46 and protecting tube 40 inner surfacies.Make the method for laser light scattering can comprise that the inner surface with first connecting leg 46 and protecting tube 40 is processed into rough surface, and by drying aluminum or silica flour attached on the inner surface.
On the other hand, in joint 44 front portions for example metal tube head 52 is arranged.Second connection tube 54 of formation second connecting device by a flexiplast makes tube head 52 link to each other with joint 44.By tying up of line 56 two ends of second connection tube 54 are fixed on tube head 52 and the joint 44.Form a through hole 54A on the connecting leg 54.
In this embodiment, the pipe that constitutes first ball 1 extends through joint 44 to tube head 52 provides second ball 2.In another embodiment of the present invention, first ball 1 can separate with second ball 2.Tying up of clamp device by for example line 58, the front end of second ball 2 can be fixed on the tube head 52.First and second balls 1 and 2 constitute by having flexibility and elastic expansible material.In the present embodiment, it is made by latex rubber, also can be made by silicone rubber.
Tube head 52 front ends comprise half bulb part 52A, and the garden post part at middle part and the minor diameter of rear end are partly.Hemisphere partly 52A partly has main urine mouth 52B and pays urine mouthful 52C in middle and both sides, and communicates with a shared urine mouthful 52D who opens in minor diameter part rear end.
The urinary catheter 18 that is inserted on the tube head 52 minor diameters part extends through joint 44, and passes first conduit 14, and outwards opens, as shown in Figure 1.So when surgical operation had urine, urine flowed into any one urine mouth.And discharge by urinary catheter 52D and 18.In operation on prostate, because prostatic heating has promoted to urinate, so this urination apparatus is effectively.The reason that the urine mouth is opened in hemisphere part 52A middle part and both sides is if any one opening has been stopped up by bladder, can both urinate reposefully by opening.
On the other hand, the second ball expansion cooling fluid supply pipe 120 extends into first conduit 14, and extends through joint 44 and enter second connecting leg 54.From the cooling water W2 of the outside supply second ball expansion cooling fluid supply pipe 20 of flowing through, and infeed second connecting leg 54, import second ball 2 through intercommunicating pore 54A then, be used for the expansion of second ball 2.Extracting cooling water W2 out by the second ball expansion cooling fluid supply pipe 20 shrinks second ball 2.
As shown in Figure 2, the lead 16 of temperature sensor extends through the gap between first and second conduits 12 and 14, and centers on the periphery of joint 44, and through second conduit 14, contacts with first ball, 2 inner surfacies at medium position along length.Lead 16 front ends are clipped in and contain between reflective two aluminium foils and the reflector plate of plastic sheet system with white pigments.Reflector plate 16A is bonded on first ball, 1 inner surface with binding agent.
Laser balloon catheter is preferably used in the treatment prostate.Not have compression pump fashionable as cooling water W1 and W2, and first and second balls 1 and 2 contractilitys because of self shrink.At this moment, second conduit 14 also correspondingly shrinks because of the contraction of first ball 1.
In this case, laser balloon catheter is inserted urethra 60, and second ball 2 is positioned in the bladder 62, as shown in Figure 5.Then, by circulating pump 30 cooling water W1 is made its expansion from the inflatable part 14A of cooling water tank 28 through managing gap between 32 and first and second conduits 12 and 14 and infeeding second conduit 14.This also expands first ball 1, shown in Fig. 2 and 5.Be used for expansible cooling water W1 and flow into first conduit 12, and return cooling water tank 28 through communicating pipe 46 through discharge pipe 34.
Cooling water W2 also infeeds second ball 2 through second ball expansion cooling fluid supply pipe 20, the second connecting legs 54 and intercommunicating pore 54A, so that 2 expansions of second ball, shown in Fig. 2 and 5.
Laser from laser generator 26 is radiated on the optical fibers 38 by joint 36, and launches from core 38A at optical fibers 38 front ends.The laser that is incident upon on the protecting tube 40 or first connecting leg 46 directly transmits by pipe 40 and 46, or is passing through its transmission after reflection and the scattering repeatedly, and at transverse scattering, and is incident upon on the prostate 64 by second conduit 14 and first ball 1.If some laser that forward are incident upon on the gold-plated helical spring 48 simultaneously, it is reflected by helical spring 48, and at transverse scattering, and is incident upon on the prostate 64 by first connecting leg, 46, the second conduits 14 and first ball 1.
Forward not the laser of interfering and on Gold plated Layer 44B, reflect, and when they transmitted rearward or interfere with helical spring 48, some in them were in horizontal reflection with helical spring 48.The reflected light that transmits rearward reflects on the gold-plated front surface of holder 42 garden shapes part 42A, forwards then.Like this, after reflecting repeatedly, laser is at transverse scattering.So laser is launched to prostate in ball 1 both sides from first ball, 1 whole surface with low dosage with high dose at the middle part along ball length.
The laser that is incident upon on the prostate 64 is absorbed to produce heat by its tissue.So prostate 64 is heated.Keep a preset time cycle with LASER HEATING.Prostate 64 having diseased tissues to be exposed to laser and being heated and downright bad, prostatic other will restore after being organized in operation soon.When particularly using Nd-YAG laser, the protein adsorption that laser will be organized well.
Also available ultrasound wave heating prostate.Though many ultrasound wave are absorbed by the moisture content in the prostata tissue, the laser rate that tissue absorbs is lower, and therapeutical effect is also low.In contrast, the laser rate of laser rate, particularly Nd-YAG that moisture content absorbs approximately is 10%, and remaining laser is by the protein adsorption in the tissue.
In an embodiment of the present invention, the inside of cooling off first ball 1 by the cooling water W1 by second conduit, 14 forced circulation is to hold it in a predetermined temperature.When not forcing to cool off, laser energy reduces from the transmission of urethra inwall to the prostate deep with it.When the prostate deep was heated to a lower temperature, the urethra inwall was heated to a higher temperature, shown in the temperature distribution history among Fig. 6.
If laser energy increases, from the urethra inwall to prostate middle part heat tissue than its dark about 6-12mm.Urethra inwall and near tissue are by superheated and may being damaged.It is more difficult curing damaged tissue.
When cooling off the inflatable part 14A of first ball 1 and second conduit 14 with cooling water W1, near the urethra tissue is cooled, shown in the temperature distribution history X among Fig. 6,, can prevent the urethral tissue damage with when laser makes it organize heating reliably with enough energy exposure prostate middle part.In this case, by circulating load or the temperature of control laser energy and cooling water W1, the distribution of energy attemperation is shown in temperature distribution history X1 or X2 among Fig. 6.According to prostatic symptom, can strengthen therapeutical effect by the attemperation distribution.
For prostatitis, by pressure cooling the prostate inboard is heated to and is no more than 43 ℃ temperature with cooling water W1.For prostate hyperplasia, the prostate inboard is heated to 45 ℃ or higher, makes it downright bad, simultaneously by forcing cooling with cooling water W1, make the urethra inwall and near do not organize and can be subjected to the hot injury.Downright bad tissue is absorbed by metabolism ground, reduces prostatic size, makes urethra open-minded.
The length of ball 1 and second conduit, 14 inflatable part 14A or the front position of optical fibers 38 are adjusted, to prevent laser infringement sphincter 66.
In operation, second ball 2 makes earlier the laser balloon catheters location effectively, prevents that again laser balloon catheter from deviating from from bladder 62.Both, made after second ball 2 is positioned in the bladder 62 laser balloon catheter being inserted, to have expanded, and to have drawn back laser catheter then and lean against the cervical region 62A of bladder 62, and first ball 1 is located with respect to prostate up to second ball 2 by making second ball 2.After finishing the location, first ball 1 is expanded.In operation, even the laser balloon catheter displacement because second ball 2 leans against the cervical region 62A of bladder 62, is deviate from from bladder 62 so can prevent laser balloon catheter.
Detect the temperature of urethra inwall by a thermocouple at lead 16 front ends.By lead 16 and joint 22 signal of representation temperature is delivered to temperature control equipment 24.Poor according to the detected temperatures of urethra inwall and target temperature adjusted the laser generator interval of 26 switch times, and adjusts the temperature of urethra inwall.By pre-determining the mutual relation between prostate middle part temperature and the urethra inner wall temperature, and can control the temperature in the middle part of the prostate.
Because excessive laser penetration prostate can make its tissue sustain damage, so the most handy temperature probe 70 inserts rectum 68, as shown in Figure 5.Temperature probe 70 has a temperature sensor 74, and it has one group of for example 5 thermocouple, is positioned at a side that the metal tube front end of high rigidity arranged, and makes the front end of thermocouple outside, makes pick off 74 biasings at the ball 76 of opposite side.The lead of temperature sensor 74 each thermocouple and an external device (ED) for example temperature control equipment 24 link to each other.After temperature probe 70 had inserted rectum 68, an external pressure source for example source of the gas expanded biases ball 76.Expansible biases ball 76 makes temperature probe to rectum 68 biasings, and closely contacts with the rectum inwall.
To make its heating with laser irradiation prostate 64.A part of laser passes prostate 64 and arrives rectum 68 sides, makes to organize also near the rectum 68 to be heated.If temperature sensor 74 detected rectum 68 inner wall temperatures have surpassed predetermined temperature, the cycle of closing time of laser generator 26 will prolong, and perhaps laser energy reduces, to prevent the excessive heating of prostate 64.Also can prevent the hot injury of rectum 68.
The present invention has another embodiment, and as shown in Figure 7, optical fibers is not as the device of launching laser.The chip 80 that one transmission laser is arranged at optical fibers 38 front ends.From the laser irradiation of optical fibers 38 front ends on chip 80.Make laser from chip 80 emissions.By a suitable connecting cylinder 82 optical fibers is linked to each other with chip.
In another embodiment, the expansion of second conduit 14 part 14A does not pass first ball 1 and extends to joint 44, and ends at line 84 the place ahead slightly, is anchored on second conduit 14 with first ball 1 with Fig. 2, so that by pumping into cooling water W1 first ball 1 is expanded.
The inflatable part 14A of second conduit 14 has many advantages by two membrane structures that first ball 1 extends to joint.If first ball 1 is by the latex rubber manufacturing, expandable first ball 1 will become hemispherical, and the vertical section is difficult to become ellipse garden shape.So, a plastic tube is provided earlier, and pressurizes and heat at its front end, blow processing, be formed with partly 14A of identical and large diameter expansion.When the part 14A that expands is expanded, it will can not expand and exceed outside the ready-formed shape.So the shape of expansible first ball 1 will be followed the partly shape of 14A that expands.Second advantage is that lead 16 imports between first ball 1 and inflatable part 14A, and make the lead front end attached on the first ball inwall, when inflatable part 14A expands,, can prevent that also detected temperatures from making a mistake even lead 14 front ends break away from from the first ball inner surface.The 3rd advantage is that even the one deck in the duplicature breaks, water can not leak yet.Extract out if will import the cooling water of inflatable part 14A, the contractility of first ball 1 will make the inflatable part 14A of second conduit 14 shrink automatically.
Though in the above embodiments, cooling water W1 passes through the Clearance Flow between first and second conduits 12 and 14, and flows into first conduit 12 by intercommunicating pore 46, and discharges by the space in first conduit 12, and the cooling-water flow direction can be opposite.
First connecting leg 46 is to be convenient to assembling with the reason that first conduit 12 separates, and for example holder 42 and protecting tube 40 are in the setting of first conduit, 12 front ends and the setting of first connecting leg, 46 medi-springs 48.So first connecting leg 46 can omit, and first conduit 12 can extend the partly 44A of minor diameter that packs into.In this case, first conduit 12 forms the intercommunicating pore of cooling water W1.
As mentioned above, though Nd-YAG laser is as best laser, also can use argon laser or diode laser etc.Because laser is absorbed by water at a low percentage ratio, they shine organizationally by the cooling water transmission and with a high ratio.
Though use cooling water with first and second balls 1 and 2 of expanding, also can use air, nitrogen and carbonoxide gas etc.Also can use other liquid coolant for example to spill essence.
For laser balloon catheter of the present invention is inserted tissue reposefully, best first and second conduits 12 and 14 and first and second connecting legs 16 and 54 are flexible.If conduit can insert point-blank, at least one in these parts can be inflexibility.
Laser balloon catheter of the present invention also is effective for the treatment of other tissue.For example, conduit also is effectively for the narrow part N of blood vessel dilating V, as shown in Figure 8.In this case, earlier lead 84 is inserted evacuating catheter 18.After lead 84 is inserted target vessel V or the while, laser balloon catheter is inserted blood vessel V.。Then, second ball 2 is inflated, as shown in Figure 8.Then, laser balloon catheter is extracted out.When second ball, 2 rear end shoulders leaned against narrow N, the surgeon can confirm the existence of second ball, 2 back narrow N according to feel.First ball 1 is when this position is inflated, and laser irradiation narrow N is with the blood vessel of vaporized expanding.
Figure 10 shows another embodiment, and wherein, first ball 1 separates with second ball 2, and second conduit 14 does not extend forward, and first ball 1 is not a double membrane structure, but single structure, 12 extensions of first conduit cooperate with minor diameter part 44A.In this embodiment, first conduit 12 has constituted first communication apparatus.
As mentioned above, in the present invention,, laser balloon catheter can be located because second ball is positioned at the first ball front.
In prostatic treatment, can prevent during operation that laser balloon catheter from deviating from, in addition, when intra-operative had urine, urine can excrete reposefully.
Claims (11)
1. a laser balloon catheter is used for launching laser at a ball, and laser is by the optical fibers transmission, and uses the laser irradiation tissue that transmits through ball, comprising:
Laser beam emitting device has described fibre-optic Laser emission end, or is positioned at the laser transfer element of optical fibers transmitting terminal, and optical fibers is accepted laser to shine them;
One first inflatable ball, around described laser irradiation device, with from described discharger to organized delivery laser;
One first fluid passage makes its expansion fluid is infeeded described first ball, and makes fluid discharge its contraction of ball;
One second inflatable ball is positioned at the front portion of described first ball;
One second fluid passage makes its expansion fluid is infeeded described second ball, and the discharge fluid makes its contraction from ball.
2. laser balloon catheter as claimed in claim 1, it is characterized in that: also comprise around described fibre-optic pipe guide, be positioned at the forward connecting device of described laser beam emitting device, with communication apparatus flexibility and that can transmit laser that is used to be connected described joint and pipe guide, the described first ball front end is fixed in described connecting device.
3. laser balloon catheter as claimed in claim 1, it is characterized in that: also comprise second pipe guide that centers on described fibre-optic first pipe guide and center on described first pipe guide, described first ball end is fixed in described second pipe guide, and described first fluid tunnel-shaped is formed between described first and second pipe guides.
4. laser balloon catheter as claimed in claim 1 is characterized in that: described second ball is fixed in described connecting device.
5. a laser balloon catheter is used for launching laser at a ball, and laser is by the optical fibers transmission, and uses the laser irradiation tissue that transmits by ball, comprising:
Laser beam emitting device has described fibre-optic Laser emission end, or is positioned at the element of the transmitted laser of optical fibers transmitting terminal, and optical fibers is accepted laser to shine them;
One first inflatable ball, around described laser beam emitting device, with from described discharger to organized delivery laser;
One first fluid passage feeds to described first ball with fluid and makes its expansion, and fluid discharged from ball makes its contraction;
One second inflatable ball is positioned at the described first ball front portion;
One second fluid passage makes its contraction fluid is fed to described second ball makes its expansion and fluid discharged from ball;
Be positioned at the forward connecting device of described laser beam emitting device;
One first flexibility and the communication apparatus that can transmit laser are used for described tube head device is linked to each other with described connecting device;
Be positioned at the forward tube head device of described connecting device;
Second communication apparatus is used to connect described tube head device and connecting device; The described first ball front end is fixed in described connecting device; Second ball is individually fixed in described tube head device and connecting device at front end and bottom.
6. laser balloon catheter as claimed in claim 5, it is characterized in that: also comprise around described fibre-optic pipe guide, described first communication apparatus is tubular, and on wall, form a fluid flow orifice, described first communication apparatus communicates with described pipe guide by it, thus, form described first fluid passage.
7. laser balloon catheter as claimed in claim 5, it is characterized in that: described second communication apparatus is tubular, and form second fluid flow bore pass wall, described second fluid passage is positioned on described second communication apparatus, and it links to each other with second fluid provider with first ball by described connecting device.
8. laser balloon catheter as claimed in claim 5 is characterized in that: described tube head is formed with the through hole that passes its extension, and described through hole is opened at one end, and the passing away outer with leading to urethra links to each other.
9. laser balloon catheter as claimed in claim 5, it is characterized in that: described tube head device forms a through hole of at one end outwards opening, in described second communication apparatus, a passing away is arranged, described passing away front end links to each other with the opening of the described through hole other end, and the bottom communicates with the urethra outside through described first ball.
10. laser balloon catheter as claimed in claim 5 also comprises second pipe guide that centers on described fibre-optic first pipe guide and center on described first pipe guide, and extend between described first and second pipe guides described second fluid passage.
11. laser balloon catheter as claimed in claim 5, it is characterized in that: also comprise one around described fibre-optic first pipe guide, with second pipe guide around described first pipe guide, described passing away extends between described first and second pipe guides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118137 CN1122684A (en) | 1994-11-08 | 1994-11-08 | Laser balloon catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118137 CN1122684A (en) | 1994-11-08 | 1994-11-08 | Laser balloon catheter |
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| Publication Number | Publication Date |
|---|---|
| CN1122684A true CN1122684A (en) | 1996-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94118137 Pending CN1122684A (en) | 1994-11-08 | 1994-11-08 | Laser balloon catheter |
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| CN (1) | CN1122684A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100496428C (en) * | 2007-01-18 | 2009-06-10 | 郑成福 | Apparatus for treating prostate diseases, and its making method |
| CN100998912B (en) * | 2007-01-15 | 2010-04-14 | 郑成福 | Therapeutic device for prostate disease and female urethra symptom group |
| CN105396214A (en) * | 2015-12-18 | 2016-03-16 | 关丽鹃 | Prostate balloon catheter |
| CN105616045A (en) * | 2016-03-03 | 2016-06-01 | 福建省立医院 | Interventional therapy device and method realizing steering and positioning fenestration through laser catheter |
| CN107320795A (en) * | 2017-08-17 | 2017-11-07 | 山东省肿瘤防治研究院 | A kind of distributing anti-clogging abdominal thermal infusion drainage tube |
| CN107485776A (en) * | 2017-09-05 | 2017-12-19 | 张镇鹏 | It is a kind of can both ends sealing abdominal thermal infusion drainage tube |
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1994
- 1994-11-08 CN CN 94118137 patent/CN1122684A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100998912B (en) * | 2007-01-15 | 2010-04-14 | 郑成福 | Therapeutic device for prostate disease and female urethra symptom group |
| CN100496428C (en) * | 2007-01-18 | 2009-06-10 | 郑成福 | Apparatus for treating prostate diseases, and its making method |
| CN105396214A (en) * | 2015-12-18 | 2016-03-16 | 关丽鹃 | Prostate balloon catheter |
| CN105616045A (en) * | 2016-03-03 | 2016-06-01 | 福建省立医院 | Interventional therapy device and method realizing steering and positioning fenestration through laser catheter |
| CN105616045B (en) * | 2016-03-03 | 2018-07-03 | 福建省立医院 | The interventional therapy device and application method of steering and positioning fenestration are realized by laser catheter |
| CN107320795A (en) * | 2017-08-17 | 2017-11-07 | 山东省肿瘤防治研究院 | A kind of distributing anti-clogging abdominal thermal infusion drainage tube |
| CN107320795B (en) * | 2017-08-17 | 2023-06-09 | 山东省肿瘤防治研究院 | Distributed anti-blocking abdominal cavity hot perfusion drainage tube |
| CN107485776A (en) * | 2017-09-05 | 2017-12-19 | 张镇鹏 | It is a kind of can both ends sealing abdominal thermal infusion drainage tube |
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