CN213722848U - Thermotherapy catheter for prostate cavity - Google Patents
Thermotherapy catheter for prostate cavity Download PDFInfo
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- CN213722848U CN213722848U CN202021880985.9U CN202021880985U CN213722848U CN 213722848 U CN213722848 U CN 213722848U CN 202021880985 U CN202021880985 U CN 202021880985U CN 213722848 U CN213722848 U CN 213722848U
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Abstract
An object of the utility model is to provide a prostate intracavity thermotherapy pipe, it can carry out the self-adaptation size according to patient's urethra internal diameter to the heating sacculus and adjust. The prostate cavity inner thermotherapy catheter for achieving the above object comprises a tube body, a positioning balloon and a thermotherapy balloon. The inside first sacculus chamber way, backward flow chamber way and wiring chamber way of having of body. The positioning saccule is arranged on the outer side of the tube body and communicated with the first saccule cavity channel, and gas or liquid can be filled into the positioning saccule from the first saccule cavity channel. The thermotherapy sacculus sets up in the body outside, and inside is provided with the thermotherapy subassembly, and the wiring chamber is said and is equipped with the wiring of connecting the thermotherapy subassembly. The reflux cavity channel is communicated with the positioning saccule and the thermal therapy saccule, and the filled gas or liquid flows between the positioning saccule and the thermal therapy saccule through the reflux cavity channel so as to keep the pressure balance in the positioning saccule and the thermal therapy saccule and enable the thermal therapy saccule to be inflated to a size suitable for being attached to the inner wall of the urethra.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to a prostate intracavity thermotherapy pipe.
Background
Prostatitis is a common disease and a frequently encountered disease of men, and the method of intracavity thermotherapy or oral medication therapy is generally adopted for treating the male prostatic hyperplasia and the prostatitis at present. The thermotherapy in cavity is to insert the thermotherapy catheter into the urethra to bladder of patient to position the thermotherapy bag in prostate position and to heat the affected part physically, so as to gradually shrink the hyperplastic part and control inflammation, thus relieving and relieving the symptoms and pain of patient.
The existing thermotherapy treatment method is to arrange a heating saccule at the affected part of a catheter inserted into the urethra of a patient, pump a certain amount of normal saline into the heating saccule, and heat the normal saline through a radio frequency loop in the saccule to heat the saccule so as to achieve the purpose of thermotherapy of the affected part.
However, the inventor found that, due to the difference of the degree of hyperplasia or inflammation of prostate gland, the degree of urethral stricture of patients is different, or due to the difference of the height or physiological structure of patients, the inner diameter of the urethral cavity is different, when the heating balloon on the thermotherapy catheter is inserted into the urethra of a patient, the discomfort of pressing the heating balloon is often caused for the patients with serious degree of hyperplasia or inflammation of prostate gland and serious urethral stricture, and for the patients with relatively large inner diameter of urethra, the heating balloon may not be tightly attached to the wall of the urethral lumen, thereby affecting the therapeutic effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prostate intracavity thermotherapy pipe, it can carry out the self-adaptation size according to patient's urethra internal diameter to the heating sacculus and adjust.
To achieve the aforementioned object, an intraluminal prostatic hyperthermia catheter comprises:
the catheter comprises a catheter body, a catheter core and a catheter core, wherein a plurality of inner cavity channels are formed in the catheter body and comprise a first balloon cavity channel, a backflow cavity channel and a wiring cavity channel;
the positioning balloon is arranged outside the tube body and is communicated with the first balloon cavity, and gas or liquid can be filled into the positioning balloon from the first balloon cavity so as to enable the positioning balloon to be inflated and positioned at the bladder opening; and
the thermotherapy balloon is arranged outside the tube body, is communicated with the wiring cavity, is internally provided with a thermotherapy component, and is internally provided with wiring connected with the thermotherapy component;
the backflow cavity channel is communicated with the positioning balloon and the thermal therapy balloon, and filled gas or liquid flows between the positioning balloon and the thermal therapy balloon through the backflow cavity channel to keep the pressure balance in the positioning balloon and the thermal therapy balloon, so that the thermal therapy balloon is inflated to a size suitable for being attached to the inner wall of the urethra.
In one or more embodiments, the two ends of the tube body are respectively provided with a guide head and a rear end assembly, the guide head is used for guiding the catheter to be inserted into the urethra, the rear end assembly provides a plurality of interfaces, and the interfaces comprise a first balloon cavity interface and a connecting plug;
the first balloon cavity channel interface is communicated with the positioning balloon through the first balloon cavity channel so as to inject gas or liquid into the positioning balloon through the first balloon cavity channel interface, and a one-way valve is arranged at the first balloon cavity channel interface;
wherein, the connecting plug is connected with the wiring in the wiring cavity channel, and the backflow cavity channel is blocked off from the rear end component.
In one or more embodiments, the lumen further comprises a catheterization lumen, the tip has a catheterization port thereon, and the interface in the rear end assembly comprises a catheterization lumen interface, the catheterization port communicating with the catheterization lumen interface through the catheterization lumen.
In one or more embodiments, the thermal therapy catheter further comprises a closure balloon, the positioning balloon, the thermal therapy balloon and the closure balloon being disposed in sequence from the guide head towards the rear end assembly;
the inner cavity channel further comprises a second balloon cavity channel, the interface in the rear end assembly comprises a second balloon cavity channel interface, the second balloon cavity channel interface is communicated with the closed balloon through the second balloon cavity channel, a one-way valve is arranged at the second balloon cavity channel interface, and gas or liquid is injected into the closed balloon through the second balloon cavity channel interface to enable the closed balloon to be inflated;
the inflated positioning saccule and the sealing saccule respectively seal the urethra to form a sealed cavity channel at the affected part of the urethra, and the thermal therapy saccule performs thermal therapy on the affected part at the sealed cavity channel.
In one or more embodiments, a liquid medicine outlet is formed in the wall of the tube body on at least one side of the thermotherapy balloon, the inner cavity channel further comprises a liquid medicine inner cavity, the interface in the rear end assembly further comprises a liquid medicine inner cavity interface, and a one-way valve is arranged at the liquid medicine inner cavity interface;
the liquid medicine inner cavity is communicated with the liquid medicine outlet and the liquid medicine inner cavity interface so as to allow the liquid medicine to be conveyed into the closed cavity channel through the liquid medicine inner cavity interface.
In one or more embodiments, the liquid medicine outlet is respectively arranged on the wall of the tube body at two sides of the thermotherapy balloon.
In one or more embodiments, the thermal treatment assembly comprises a plurality of heating units and at least one temperature measuring unit;
each heating unit comprises a radio frequency electrode ring and a radio frequency lead, wherein the radio frequency electrode ring and the radio frequency lead are sleeved on the outer side of the pipe body, and the radio frequency lead is connected with the plug and the radio frequency electrode ring;
the temperature measuring unit comprises a temperature measuring electrode ring and a temperature measuring wire, wherein the temperature measuring electrode ring and the temperature measuring wire are sleeved on the outer side of the pipe body, and the temperature measuring wire is connected with the plug and the temperature measuring electrode ring.
In one or more embodiments, the thermal therapy assembly further includes a heat transfer electrode ring sleeved outside the tube body, and the heat transfer electrode ring and the rf electrode ring are uniformly distributed outside the tube body in the thermal therapy balloon.
In one or more embodiments, the thermal treatment balloon has a wall thickness no greater than the positioning balloon.
In one or more embodiments, after the wiring is arranged in the wiring cavity, the wiring cavity is blocked by silica gel.
The utility model discloses an advance effect includes following one or combination:
1) through set up the backward flow chamber way that communicates thermotherapy ball and location sacculus in the pipe for thermotherapy sacculus and location sacculus internal pressure are balanced, thereby guaranteed when the pipe inserts the urethra that has different internal diameters, utilize the pressure of urethra inner wall to the thermotherapy sacculus, realized can adjusting the size of thermotherapy sacculus according to different urethra internal cavity footpaths, thereby realize the self-adaptation size of thermotherapy sacculus in patient's urethra and adjust.
2) The heat transfer electrode ring is arranged in the thermotherapy saccule, so that the fluid in the thermotherapy saccule can be heated more uniformly.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
figure 1 shows a schematic view of an embodiment of a catheter for hyperthermia treatment of the inside of a prostate cavity;
FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along B-B of FIG. 2;
FIG. 4 is an enlarged view of portion E of FIG. 3;
FIG. 5 shows a schematic cross-sectional view along D-D in FIG. 2;
fig. 6 is a schematic sectional view taken along the direction C-C in fig. 2.
Detailed Description
The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and are not intended to limit the scope of the present disclosure. For example, if a first feature is formed over or on a second feature described later in the specification, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.
It should be noted that, where used, the following description of upper, lower, left, right, front, rear, top, bottom, positive, negative, clockwise, and counterclockwise are used for convenience only and do not imply any particular fixed orientation. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object.
It should be noted that these and other figures are given by way of example only and are not drawn to scale, and should not be construed as limiting the scope of the invention as it is actually claimed. Further, the conversion methods in the different embodiments may be appropriately combined.
Without solving one or more of the problems of the prior art, the present invention provides an intraluminal prostatic heating catheter, as shown in fig. 1, which is a schematic view of an embodiment of the intraluminal prostatic heating catheter, and fig. 2 is a schematic sectional view along a-a direction in fig. 1.
Referring to fig. 1 and 2, the thermal therapeutic catheter for prostate cavity includes: a tube body 1, a positioning sacculus 2 and a thermal therapy sacculus 3.
The tube body 1 has a plurality of inner channels therein, as shown in fig. 2, the inner channels include a first balloon channel 11, a backflow channel 12, and a wiring channel 13. The plurality of channels may be separated from each other by a plurality of inner walls 100 disposed and extending inside the tube 1, as shown in fig. 2. A plurality of inner channels are defined between the inner walls 100.
The positioning balloon 2 is arranged on the outer periphery of the tube body 1 and is communicated with the first balloon cavity 11. Specifically, as shown in fig. 1, a positioning balloon opening 20 may be formed in an outer wall of the tube body 1, so that the inside of the positioning balloon 2 passing through the positioning balloon opening 20 is communicated with one end of the first balloon cavity 11, when gas or liquid is introduced into the other end of the first balloon cavity 11, the gas or liquid may be filled into the positioning balloon 2 from the first balloon cavity 11, and the inside of the positioning balloon 2 is filled with fluid and inflated, so that the tube body 1 is positioned at the bladder opening by the positioning balloon 2 in the inflated state.
In some other embodiments different from those shown, the communication mentioned in one or more embodiments of the present invention may have many suitable variations or changes, but not limited thereto, for example, in the communication between the first balloon channel 11 and the positioning balloon 2, the first balloon channel 11 may have a section of thin tube extending out of the outer side wall of the tube body, and the positioning balloon 2 is communicated with the first balloon channel 11 through the thin tube. The communication modes mentioned in one or more of the embodiments described below may also be the same or equivalent, and thus are not described in detail.
Referring to the attached drawings, the thermal therapy balloon 3 is disposed on the outer periphery of the tube 1 and is communicated with the wiring channel 13, and a thermal therapy component is disposed inside the thermal therapy balloon 3 and is used for heating the thermal therapy balloon 3 to perform thermal therapy on the focus of the patient. Wherein, the wiring cavity channel 13 is internally provided with wiring connected with the thermal therapy component. Specifically, as shown in fig. 1, a wiring opening 30 may be formed in the outer wall of the pipe body 1, and the wiring may be extended along the wiring cavity 13 by entering the wiring channel 13 through the wiring opening.
The backflow channel 12 is communicated between the positioning balloon 2 and the thermal therapy balloon 3, and the gas or liquid filled into the positioning balloon 2 flows between the positioning balloon 2 and the thermal therapy balloon 3 through the backflow channel 12, so that the pressure balance between the positioning balloon 2 and the thermal therapy balloon 3 is kept, and the thermal therapy balloon 3 is filled to a size suitable for being attached to the inner wall of the urethra. Specifically, as shown in fig. 1, a backflow inner cavity outlet 121 and a backflow inner cavity inlet 122 are respectively formed on the outer wall of the tube body 1, the backflow inner cavity inlet 122 is communicated with the inner cavity of the thermotherapy balloon 3, and the backflow inner cavity outlet 121 is communicated with the inner cavity of the positioning balloon.
Specifically, when the positioning balloon 2 is inflated, the internal pressure of the balloon is increased, and the positioning balloon 2 is communicated with the thermal therapy balloon 3 through the backflow channel 12, so that the fluid in the positioning balloon 2 can release the internal pressure of the thermal therapy balloon 3 from the backflow inner cavity outlet 121, so that the fluid flows into the thermal therapy balloon 3 from the backflow inner cavity inlet 122, and when the thermal therapy balloon 3 is filled with the fluid, the surface of the balloon is slowly expanded and can be tightly attached to the mucosa of the affected part of the prostate. When the surface of the saccule is tightly attached to the mucosa of the affected part, the mucosa presses the outer wall of the thermal therapy saccule 3, so that internal pressure is generated inside the thermal therapy saccule 3, the internal pressure of the positioning saccule 2 is gradually balanced with the internal pressure of the thermal therapy saccule 3, and the thermal therapy saccule 3 can be tightly attached to the inner wall of the affected part of the urethra. Meanwhile, the positioning balloon 2 can be inflated and close the entrance of the urethra.
In the existing thermotherapy catheters, the outer diameter of a heating balloon on the thermotherapy catheter inserted into the urethra of a patient is not adjustable, namely the catheter inserted into the urethra of the patient has the same expansion force on the heating balloon with different urethra inner cavity diameters and has the same pressure on the urethra inner cavity diameter of the patient. Through set up the backward flow chamber way 12 that communicates thermotherapy sacculus 3 and location sacculus 2 in the pipe for thermotherapy sacculus 3 is balanced with location sacculus 2 internal pressure, thereby guaranteed when the pipe inserts the urethra that has different internal diameters, utilize the urethra inner wall to the pressure of thermotherapy sacculus 3, realized can adjusting the size of thermotherapy sacculus 3 according to different urethra internal cavity footpaths, thereby realize the self-adaptation size of thermotherapy sacculus 3 in patient's urethra and adjust.
Although one embodiment of the intraluminal prostate thermotherapy catheter is described above, in other embodiments of the intraluminal prostate thermotherapy catheter, the intraluminal prostate thermotherapy catheter may have more details than the above embodiments in many respects, and at least some of these details may be varied widely. At least some of these details and variations are described below in several embodiments.
Fig. 3 is a schematic cross-sectional view along the direction B-B in fig. 2, please refer to fig. 1 to 3, in one embodiment of the prostate intracavity thermotherapy catheter, a guide head 4 and a rear end assembly 5 are respectively disposed at two ends of a tube body 1, the guide head 4 is used for guiding the catheter to be inserted into the urethra of the patient, and the rear end assembly 5 is provided with a plurality of interfaces, including a first balloon lumen interface 51 and a connection plug 52. The first balloon channel interface 51 is communicated with the positioning balloon 2 through the first balloon channel 11, so that gas or liquid can be injected into the positioning balloon 2 through the first balloon channel interface 51, wherein a one-way valve is arranged at the first balloon channel interface 51 to prevent backflow of fluid. The connection plug 52 is connected to the wiring in the wiring channel 13 so that the heating of the thermal therapeutic assembly is initiated by inserting the connection plug 52 onto, for example, a radio frequency thermal therapeutic apparatus.
Wherein, the backflow channel 12 and the back end component 5 are sealed, so that a self-balancing channel is formed among the thermal therapy balloon 3, the positioning balloon 2 and the backflow channel 12.
In other embodiments, which are different from those shown, there can be many suitable variations or modifications in the structural configuration of the prostatic intraluminal hyperthermia catheter, but not limited thereto. As in one embodiment, the intraluminal prostatic hyperthermia catheter can be provided with a guide member in a different form than the guide head 4 shown in the figures, or in another form, to guide into the urethra of the patient. As another embodiment, the rear end module 5 may be formed integrally without being provided at the end of the pipe body 1, and may be formed by separate manufacturing and then joining. As in yet another embodiment, the first balloon lumen interface 51 may be free of a one-way valve and the degree of filling of the balloon interior may be manually manipulated. As in yet another embodiment, the return channel 12 is disposed only between the thermal treatment balloon 3 and the positioning balloon 2, and does not extend toward the rear end assembly 5.
With continued reference to fig. 1-3, in one embodiment of the prostatic intraluminal thermotherapy catheter, the lumen channel further comprises a catheterization lumen 14 having a urethral catheterization port 40 at the catheter head 4, and the port in the rear end assembly 5 comprises a catheterization lumen port 53, the urethral port 40 communicating with the catheterization lumen port 53 through the urethral catheterization lumen 14 to facilitate urination in the urethra of the patient. In one embodiment, the catheterization lumen interface 53 may be connected to a medical instrument, such as an external urinary bag or an effusion bag, to enable catheterization of a patient during treatment.
In one embodiment of the heat treatment catheter in the prostate cavity, the heat treatment catheter further comprises a sealing balloon 6, and the positioning balloon 2, the heat treatment balloon 3 and the sealing balloon 6 are arranged in sequence from the guide head 4 to the rear end assembly 5, as shown in the figure, and the positioning balloon 2 is adjacent to the end of the guide head 4. The end of the closed balloon 6 closer to the rear end assembly 5, the thermotherapy balloon 3 is arranged between the positioning balloon 2 and the closed balloon 6.
The inner cavity channel further comprises a second balloon cavity channel 15, the interface in the rear end assembly 5 comprises a second balloon cavity channel interface 54, the second balloon cavity channel interface 54 is communicated with the closed balloon 6 through the second balloon cavity channel 15, and a one-way valve is also arranged at the second balloon cavity channel interface 54 to prevent backflow of fluid. Gas or liquid is injected into the closed balloon 6 through the second balloon lumen interface 54 to cause the closed balloon 6 to be inflated and inflated by the fluid.
The positioning saccule 2 and the sealing saccule 6 in the filling state are respectively expanded and seal the urethra, so that a closed cavity channel is formed at the affected part of the urethra, and the thermotherapy saccule 3 carries out thermotherapy on the affected part at the closed cavity channel.
With continued reference to fig. 1-3, in one embodiment of the catheter for intraluminal thermotherapy of the prostate, a medical fluid outlet 160 is opened on at least one side of the thermotherapy balloon 3, the lumen channel further includes a medical fluid lumen 16, the port in the rear end module 5 further includes a medical fluid lumen port 55, and a one-way valve is disposed at the medical fluid lumen port 55 to prevent fluid backflow. The liquid medicine inner cavity 16 is communicated with the liquid medicine outlet 160 and the liquid medicine inner cavity interface 55, so that liquid medicine is conveyed into a closed cavity between the positioning balloon 2 and the closed balloon 6 through the liquid medicine inner cavity interface 55, and the function of conveying liquid medicine to the thermal therapy part is realized.
In one embodiment of the thermotherapy catheter in the prostate cavity, the medical fluid outlet 160 is disposed on the tube body wall on both sides of the thermotherapy balloon 3 as shown in the figure, and in other embodiments different from the one shown in the figure, the number and the disposition position of the medical fluid outlet 160 may be changed or varied in many ways, but not limited thereto, and as in one embodiment, the medical fluid outlet 160 may be disposed on the tube body wall on only one side of the thermotherapy balloon 3. As another embodiment, the medical fluid outlet 160 may be a plurality of which are respectively provided at both sides of the thermal treatment balloon 3.
As shown in fig. 4, which is a partially enlarged view of part E of fig. 3, the thermal treatment assembly of the thermal treatment balloon 3 comprises a plurality of heating units and at least one thermometry unit. The heating unit comprises a radio frequency electrode ring 31 and a radio frequency lead 32 which are sleeved outside the tube body 1, and the temperature measuring unit comprises a temperature measuring electrode ring 33 and a temperature measuring lead 34 which are sleeved outside the tube body 1. Wherein, the radio frequency lead 32 connects the radio frequency electrode ring 31 and the connecting plug 52, so that the radio frequency electrode ring 31 is electrified to generate heat by electrifying the external device. The temperature measuring conducting wire 34 is connected with the temperature measuring electrode ring 33 and the connecting plug 52, so that the temperature measuring electrode ring 3 monitors the temperature in the thermal therapy saccule 3 by electrifying through an external device.
With continued reference to fig. 4, in an embodiment of the catheter for thermal therapy in the prostate cavity, the thermal therapy assembly further includes a heat transfer electrode ring 35 sleeved outside the tube body 1, the heat transfer electrode ring 35 is used for uniformly transferring heat to the inside of the thermal therapy balloon 3, wherein the heat transfer electrode ring 35 and the radio frequency electrode ring 31 are uniformly distributed in the thermal therapy balloon 3 along the extending direction of the tube body 1, so as to achieve uniform heat conduction to the fluid in the thermal therapy balloon 3.
In one embodiment of the prostate intraluminal thermotherapy catheter, the thermotherapy balloon 3 has a wall thickness no greater than the positioning balloon 2, so that when the positioning balloon 2 and the thermotherapy balloon 3 are inflated together and against the inner wall of the urethra, the fluid in the thermotherapy balloon 3 presses against the inner wall of the urethra less than the positioning balloon 2, and the heat is more easily transferred to the affected part of the urethra because the thermotherapy balloon 3 has a thinner inner wall.
In one embodiment of the prostate intraluminal thermotherapy catheter, after the wiring is routed within the wiring channels 13, the wiring channels 13 are plugged with silicone to achieve insulation.
In one embodiment of the prostate intraluminal thermotherapy catheter, the gas or liquid introduced as described in one or more of the embodiments above is physiological saline.
Fig. 5 is a schematic cross-sectional view taken along the direction D-D in fig. 2, and fig. 6 is a schematic cross-sectional view taken along the direction C-C in fig. 2, please refer to fig. 1 to 6 in combination.
The catheter for hyperthermia in prostate cavity in one or more embodiments as described above can be applied to a thermotherapy apparatus, in which the proximal guide tip 4 of the catheter is inserted from the urethra of the patient until the positioning balloon 2 completely reaches the bladder, and then the physiological saline is injected through the one-way valve of the first balloon lumen access 51 to fill the positioning balloon 2, and then the catheter is pulled outwards until the positioning balloon 2 is positioned at the bladder opening. At the moment, the thermal therapy balloon 3 is placed on the affected part of the urethra and prostate of a patient, the internal pressure of the balloon is increased after the positioning balloon 2 is inflated, and the positioning balloon 2 is communicated with the thermal therapy balloon 3 through the backflow cavity channel 12, so that the physiological saline in the positioning balloon 2 can automatically release the internal pressure of the positioning balloon 2 from the backflow cavity outlet 121 to enable the physiological saline to flow into the thermal therapy balloon 3 from the backflow cavity inlet 122, when the physiological saline is inflated into the thermal therapy balloon 3, the surface of the balloon is slowly expanded and can be tightly attached to the mucosa of the affected part of the prostate, as long as the surface of the balloon is tightly attached to the mucosa of the affected part, the internal pressure of the thermal therapy balloon 3 is generated, the internal pressure of the positioning balloon 2 and the internal pressure of the thermal therapy balloon 3 are gradually balanced, and therefore the thermal therapy balloon 3 can be tightly attached to the inner wall of the affected part of the urethra. And simultaneously, the normal saline is injected through the one-way valve of the second balloon cavity channel interface 54, so that the urethra of the patient is sealed after the sealing balloon 6 is filled, and the affected part of the urethra basically forms a sealed cavity channel.
At the moment, the connecting plug 52 is connected with the radio frequency thermotherapy instrument, the heating unit in the thermotherapy assembly in the thermotherapy balloon 3 transmits the controllable radio frequency power output by the radio frequency thermotherapy instrument to the radio frequency electrode ring 31 through the connecting plug 52 and the radio frequency conducting wire 32, and the physiological saline in the thermotherapy balloon 3 is heated as a medium to carry out electric-thermal conversion; the temperature measuring unit in the thermal therapy component transmits the measured instant temperature to the radio frequency thermal therapy instrument through the temperature measuring lead 34, the temperature measuring electrode ring 33 and the connecting plug 52 to achieve instant temperature control, so that the thermal therapy balloon 3 is kept at constant temperature, and the thermal therapy is carried out on the focus part of the patient.
Meanwhile, the liquid medicine can be injected from the liquid medicine cavity interface 55 and the injector interface, so that the liquid medicine flows out from the liquid medicine outlet 160 through the liquid medicine cavity 16, the liquid medicine is left in the closed area between the positioning balloon 2 and the closed balloon 6 at the periphery of the thermotherapy balloon 3, and the liquid medicine in the closed area is warmed through the heated thermotherapy balloon 3, so that the purpose of targeted thermotherapy by the liquid medicine is achieved.
The utility model discloses an advance effect includes following one or combination:
1) through set up the backward flow chamber way that communicates thermotherapy ball and location sacculus in the pipe for thermotherapy sacculus and location sacculus internal pressure are balanced, thereby guaranteed when the pipe inserts the urethra that has different internal diameters, utilize the pressure of urethra inner wall to the thermotherapy sacculus, realized can adjusting the size of thermotherapy sacculus according to different urethra internal cavity footpaths, thereby realize the self-adaptation size of thermotherapy sacculus in patient's urethra and adjust.
2) The heat transfer electrode ring is arranged in the thermotherapy saccule, so that the fluid in the thermotherapy saccule can be heated more uniformly.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention, all without departing from the content of the technical solution of the present invention, fall within the scope of protection defined by the claims of the present invention.
Claims (10)
1. A prostate intraluminal hyperthermia catheter, comprising:
the catheter comprises a catheter body, a catheter core and a catheter core, wherein a plurality of inner cavity channels are formed in the catheter body and comprise a first balloon cavity channel, a backflow cavity channel and a wiring cavity channel;
the positioning balloon is arranged outside the tube body and is communicated with the first balloon cavity, and gas or liquid can be filled into the positioning balloon from the first balloon cavity so as to enable the positioning balloon to be inflated and positioned at the bladder opening; and
the thermotherapy balloon is arranged outside the tube body, is communicated with the wiring cavity, is internally provided with a thermotherapy component, and is internally provided with wiring connected with the thermotherapy component;
the two ends of the tube body are respectively provided with a guide head and a rear end component, the backflow cavity channel and the rear end component are blocked, the backflow cavity channel is communicated with the positioning balloon and the thermal therapy balloon, and the filled gas or liquid flows between the positioning balloon and the thermal therapy balloon through the backflow cavity channel so as to keep the pressure balance between the positioning balloon and the thermal therapy balloon, so that the thermal therapy balloon is inflated to a size suitable for being attached to the inner wall of a urethra.
2. A catheter for hyperthermia treatment in the prostate cavity as claimed in claim 1, wherein the guide head is used to guide the catheter into the urethra and the rear end assembly provides a plurality of interfaces including a first balloon lumen interface and a connection plug;
the first balloon cavity channel interface is communicated with the positioning balloon through the first balloon cavity channel so as to inject gas or liquid into the positioning balloon through the first balloon cavity channel interface, and a one-way valve is arranged at the first balloon cavity channel interface;
wherein the connection plug is connected with the wiring in the wiring cavity.
3. A catheter for hyperthermia within the prostate cavity as claimed in claim 2, wherein said lumen further comprises a catheterization lumen, said tip having a catheterization port therein, said port in said rear end assembly comprising a catheterization lumen port, said catheterization port communicating with said catheterization lumen port through said catheterization lumen.
4. A heat treatment catheter for inside prostate cavity according to claim 2, further comprising a closing balloon, wherein said positioning balloon, said heat treatment balloon and said closing balloon are disposed in sequence from said leading end toward said trailing end assembly;
the inner cavity channel further comprises a second balloon cavity channel, the interface in the rear end assembly comprises a second balloon cavity channel interface, the second balloon cavity channel interface is communicated with the closed balloon through the second balloon cavity channel, a one-way valve is arranged at the second balloon cavity channel interface, and gas or liquid is injected into the closed balloon through the second balloon cavity channel interface to enable the closed balloon to be inflated;
the inflated positioning saccule and the sealing saccule respectively seal the urethra to form a sealed cavity channel at the affected part of the urethra, and the thermal therapy saccule performs thermal therapy on the affected part at the sealed cavity channel.
5. A catheter for thermal therapy in prostate cavity according to claim 4, wherein a medical fluid outlet is provided on the wall of said tube body on at least one side of said thermal therapy balloon, said lumen channel further comprises a medical fluid lumen, said port in said rear end assembly further comprises a medical fluid lumen port, said medical fluid lumen port being provided with a one-way valve;
the liquid medicine inner cavity is communicated with the liquid medicine outlet and the liquid medicine inner cavity interface so as to allow the liquid medicine to be conveyed into the closed cavity channel through the liquid medicine inner cavity interface.
6. A catheter for thermal treatment of inside of prostate cavity according to claim 5, wherein said outlet for medical liquid is opened on the wall of said tube body on both sides of said thermal treatment balloon, respectively.
7. A thermal treatment catheter for inside prostate cavity according to claim 2, wherein said thermal treatment assembly comprises a plurality of heating units and at least one temperature measuring unit;
each heating unit comprises a radio frequency electrode ring and a radio frequency lead, wherein the radio frequency electrode ring and the radio frequency lead are sleeved on the outer side of the pipe body, and the radio frequency lead is connected with the plug and the radio frequency electrode ring;
the temperature measuring unit comprises a temperature measuring electrode ring and a temperature measuring wire, wherein the temperature measuring electrode ring and the temperature measuring wire are sleeved on the outer side of the pipe body, and the temperature measuring wire is connected with the plug and the temperature measuring electrode ring.
8. A thermal therapy catheter for prostate intracavity of claim 7, wherein said thermal therapy assembly further comprises a heat transfer electrode ring sleeved outside said tubular body, said heat transfer electrode ring and said rf electrode ring being disposed both outside said tubular body inside said thermal therapy balloon.
9. A catheter for hyperthermia treatment in the prostate cavity according to claim 1, wherein the hyperthermia balloon has a wall thickness no greater than the positioning balloon.
10. A prostate intraluminal hyperthermia catheter according to claim 1, wherein said wiring channels are blocked by silicone after said wiring is routed within said wiring channels.
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| CN202021880985.9U CN213722848U (en) | 2020-09-01 | 2020-09-01 | Thermotherapy catheter for prostate cavity |
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| CN202021880985.9U CN213722848U (en) | 2020-09-01 | 2020-09-01 | Thermotherapy catheter for prostate cavity |
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| CN213722848U true CN213722848U (en) | 2021-07-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116236676A (en) * | 2023-02-20 | 2023-06-09 | 中国医学科学院北京协和医院 | Balloon expander for urological endoscopic surgery |
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2020
- 2020-09-01 CN CN202021880985.9U patent/CN213722848U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116236676A (en) * | 2023-02-20 | 2023-06-09 | 中国医学科学院北京协和医院 | Balloon expander for urological endoscopic surgery |
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