CN110935110A - Auxiliary device for bladder treatment - Google Patents

Abstract

The invention provides an auxiliary device for treating bladder, which comprises a hollow catheter, wherein one end of the catheter is closed, the other end of the catheter is opened, the wall of the catheter is hollow to form an interlayer, the two ends of the interlayer are closed, the outer side of the interlayer is an outer tube of the catheter, the inner side of the interlayer is an inner tube of the catheter, and the outer tube is provided with a liquid inlet and outlet; when one side of the closed opening of the catheter contacts the top wall of the bladder, the liquid inlet and outlet are positioned in the bladder; an opening of the interlayer closed opening on one side of the opening of the catheter is connected with an infusion tube; a radioactive source moving within the catheter under guidance of the guidewire; a plurality of flexible support wires; the two supporting sleeves are hollow cylinders with openings at two ends, one supporting sleeve is fixedly sleeved on one side of the closed opening of the guide pipe, and the other supporting sleeve is sleeved on the sleeve in a sliding manner; two ends of the flexible supporting wire are respectively fixed on the two supporting sleeves; can carry out accurate internal irradiation on the bladder tissue so as to achieve the purpose of eliminating residual focus after TURBT operation.

Description

Auxiliary device for bladder treatment

Technical Field

The invention relates to medical auxiliary equipment, in particular to an auxiliary device for bladder treatment, which is suitable for bladder tumor intracavity radiotherapy in the urology surgery.

Background

The radiation in the bladder is mainly to expose the tumor through bladder incision and then to put radioactive particles for short distance radiation, and then to combine external radiation and bladder retention operation, thereby achieving the treatment purpose, and the 5-year survival rate can reach 60-80% according to the different stages of the tumor. The internal irradiation mainly aims at the target area to be irradiated, so that the waiting time of external irradiation is avoided, the increment of residual subclinical lesions caused by the waiting time is avoided, and the treatment course is shortened. Meanwhile, the irradiation field can be accurately set by internal irradiation at a continuous low dose, tumor tissues which cannot be resected and remain after operation are directly damaged, surrounding normal tissues and visceral organs are continuously prevented from being damaged, and complications are reduced.

The recurrence rate of malignant bladder tumor after TURBT (transurethral cystotomy) operation is high, the existing recurrence prevention means is to perfuse chemotherapy drugs or immunotherapy drugs into the bladder, but the recurrence control effect is limited. Afterloading radiotherapy has better curative effect in the treatment of cervical cancer and endometrial cancer, but no equipment for brachytherapy in the bladder cavity is available at present.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an auxiliary device for bladder treatment, which can carry out accurate internal irradiation on bladder tissues so as to achieve the purpose of eliminating residual focus after TURBT operation.

The technical scheme of the invention is as follows: an auxiliary device for bladder treatment, comprising,

the liquid guiding device comprises a hollow guide pipe, a liquid guiding device and a liquid guiding device, wherein one end of the guide pipe is closed, the other end of the guide pipe is opened, the pipe wall of the guide pipe is hollow to form an interlayer, two ends of the interlayer are closed, the outer side of the interlayer is an outer pipe of the guide pipe, the inner side of the interlayer is an inner pipe of the guide pipe, and the outer pipe is; when one side of the closed opening of the catheter contacts the top wall of the bladder, the liquid inlet and outlet are positioned in the bladder; an opening of the interlayer closed opening on one side of the opening of the catheter is connected with an infusion tube;

a radioactive source moving within the catheter under guidance of the guidewire;

a plurality of flexible support wires;

the two supporting sleeves are hollow cylinders with openings at two ends, one supporting sleeve is fixedly sleeved on one side of the closed opening of the guide pipe, and the other supporting sleeve is sleeved on the sleeve in a sliding manner; two ends of the flexible supporting wire are respectively fixed on the two supporting sleeves.

As a preferred example, the cross section of the flexible supporting wire is rectangular, a plurality of flexible supporting wire insertion holes are formed in the side wall of the supporting sleeve along the axial direction, the cross section of each flexible supporting wire insertion hole is rectangular, the cross section of each flexible supporting wire insertion hole is the same as that of the flexible supporting wire, and two ends of each flexible supporting wire are respectively and correspondingly fixed in the flexible supporting wire insertion holes of the two supporting sleeves. Adopt rectangular flexibility to prop the silk, be the flat structure, during the use, when promoting slidable supporting sleeve, control a plurality of flexibility and prop the crooked orientation of silk atress and keep away from the pipe direction and bend to strut into ellipse or circular, the flat structure can increase the area of contact with the bladder inner wall, reduces pressure, improves patient's comfort level.

As a preferred example, the catheter is capable of penetrating deep into the bladder, with the fluid inlet and outlet ports located within the bladder and proximate the urethra when the closed end side of the catheter contacts the top wall of the bladder.

As a preferred example, the inner wall of the supporting sleeve sleeved on one side of the closed opening of the conduit is fixedly adhered to the outer wall of the conduit. The fixed connection is reliable.

The invention has the beneficial effects that: the auxiliary device for bladder treatment comprises a flexible stay wire for propping open and fixing the bladder, so that the bladder is placed into a radioactive source for carrying out radiotherapy in a bladder cavity through a later device, the internal irradiation can be effectively carried out on the bladder mucosa, the radiation injury of peripheral tissues and organs is reduced, and the uneven irradiation caused by the bladder activity is reduced. The residual tumor in the bladder can be killed and killed by the postirradiation in the bladder cavity by the catheter, thereby achieving the purpose of reducing the recurrence and the progression of the tumor.

Drawings

FIG. 1 is a schematic cross-sectional view of an auxiliary device for bladder treatment;

FIG. 2 is a top view of an auxiliary device for bladder treatment;

FIG. 3 is a schematic structural diagram of a flexible stay wire;

fig. 4 is a cross-sectional schematic view of a support sleeve.

In the figure: 1 is a supporting sleeve, 2 is a catheter, 3 is a liquid inlet and outlet, 4 is a flexible supporting wire, 5 is a transfusion tube, 6 is a guide wire, 7 is a radioactive source, 11 is a flexible supporting wire jack, 21 is an outer tube, and 22 is an inner tube.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in figures 1-4, an auxiliary device for bladder treatment comprises ahollow catheter 2, aradioactive source 7, a plurality offlexible support wires 4 and twosupport sleeves 1. One end of theguide pipe 2 is closed, the other end of the guide pipe is opened, an interlayer is formed in the hollow pipe wall of theguide pipe 2, the two ends of the interlayer are closed, theouter pipe 21 of theguide pipe 2 is arranged on the outer side of the interlayer, theinner pipe 22 of theguide pipe 2 is arranged on the inner side of the interlayer, and theouter pipe 21 is provided with a liquid inlet andoutlet 3. Thecatheter 2 can go deep into the bladder, and when the closed end side of thecatheter 2 contacts the top wall of the bladder, the liquid inlet andoutlet 3 is positioned in the bladder and close to the urethra. An opening of the interlayer closed opening at one side of the opening of thecatheter 2 is connected with aninfusion tube 5. Theradioactive source 7 and theguide wire 6 are connected and can move back and forth in thecatheter 2 under the guidance of theguide wire 6. The two supportingsleeves 1 are hollow cylinder structures with openings at two ends, one is adhered to the closed end side of theguide pipe 2 and the other is sleeved on the sleeve in a sliding manner. Two ends of theflexible stay wire 4 are respectively fixed on the two supportingsleeves 1.

In one embodiment, as shown in fig. 2 and 3, the cross section of the flexible supportingwire 4 is rectangular, and the flexible supporting wire can be made of steel wires, the side wall of the supportingsleeve 1 is provided with a plurality of flexible supportingwire insertion holes 11 along the axial direction, the cross section of each flexible supportingwire insertion hole 11 is rectangular, the cross section of each flexible supporting wire insertion hole is the same as that of the corresponding flexible supportingwire 4, and two ends of each flexible supportingwire 4 are respectively and correspondingly fixed in the flexible supportingwire insertion holes 11 of the two supportingsleeves 1.

Before treatment, the bladder capacity is measured by means of ultrasonography B or magnetic resonance and other imaging means, an auxiliary device for bladder treatment with proper length and diameter is selected according to the distance from the bladder top wall to the internal orifice of the urethra, the length of the part of a common flexible stay wire which can be propped open is 5-8cm, and the diameter of the auxiliary device for bladder treatment before being propped open is about 1 cm. The catheter with the supporting sleeve at one end is placed into the bladder through the urethra, after the catheter touches the top wall of the bladder, physiological saline is injected into the bladder through the infusion tube, so that the bladder is just full, the slidable supporting sleeve is pushed, and the flexible supporting wire is controlled to bend towards the direction far away from the catheter under the stress until the flexible supporting wire just fits the bladder wall. Magnetic resonance three-dimensional reconstruction, the arrangement mode of radioactive sources is set according to the shape of the bladder, the aim is to ensure that the bladder wall is fully and uniformly irradiated, the damage to tissues and organs outside the bladder wall is reduced, and the radioactive sources which are designed are placed in the bladder wall through guide wires for internal irradiation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (4)

Translated fromChinese

1.一种用于膀胱治疗的辅助装置，其特征在于：包括，1. an auxiliary device for bladder treatment, characterized in that: comprising,一中空的导管，所述导管一端封闭，一端开口，导管的管壁中空形成夹层，夹层两端封闭，夹层外侧为导管的外管，夹层内侧为导管的内管，所述外管上开设有进出液口；当导管封闭口一侧接触膀胱顶壁时，进出液口位于膀胱内；所述导管开口一侧的夹层封闭口处开口连接输液管；A hollow catheter, one end of the catheter is closed and one end is open, the pipe wall of the catheter is hollow to form an interlayer, both ends of the interlayer are closed, the outer side of the interlayer is the outer pipe of the catheter, the inner side of the interlayer is the inner pipe of the catheter, and the outer pipe is provided with The liquid inlet and outlet; when one side of the catheter sealing port contacts the top wall of the bladder, the liquid inlet and outlet are located in the bladder; the opening of the interlayer sealing port on the side of the catheter opening is connected to the infusion tube;一放射源，所述放射源在导丝的引导下在导管内移动；a radiation source that moves within the catheter under the guidance of a guide wire;若干根柔性撑丝；Several flexible support wires;两个支承套，两个支承套为两端开口的中空柱体，其中一个支承套固定套设于导管封闭口一侧，另一个可滑动套设于套管上；柔性撑丝的两端分别固定于两个支承套上。Two support sleeves, the two support sleeves are hollow cylinders with open ends, one of which is fixedly sleeved on one side of the closed opening of the conduit, and the other is slidably sleeved on the sleeve; the two ends of the flexible support wire are respectively Fixed on two support sleeves.2.根据权利要求所述的一种用于膀胱治疗的辅助装置，其特征在于：所述柔性撑丝截面为长方形，所述支承套的侧壁上沿轴向开设有若干个柔性撑丝插孔，所述柔性撑丝插孔的截面为与柔性撑丝截面相同的长方形，柔性撑丝的两端分别对应固定于两个支承套的柔性撑丝插孔内。2 . The auxiliary device for bladder treatment according to claim 2 , wherein the cross-section of the flexible stay wire is rectangular, and the side wall of the support sleeve is provided with several flexible stay wire inserts along the axial direction. 3 . The cross section of the flexible support wire insertion hole is the same as the cross section of the flexible support wire, and both ends of the flexible support wire are respectively fixed in the flexible support wire insertion holes of the two support sleeves.3.根据权利要求所述的一种用于膀胱治疗的辅助装置，其特征在于：所述导管能够深入膀胱内，当导管封闭口一侧接触膀胱顶壁时，进出液口位于膀胱内且接近尿道处。3 . The auxiliary device for bladder treatment according to claim 3 , wherein the catheter can penetrate deep into the bladder, and when one side of the closed port of the catheter contacts the top wall of the bladder, the liquid inlet and outlet are located in the bladder and are close to the bladder. 4 . urethra.4.根据权利要求所述的一种用于膀胱治疗的辅助装置，其特征在于：套设于导管封闭口一侧的支承套内壁与导管外壁之间粘黏固定。4 . The auxiliary device for bladder treatment according to claim 4 , wherein the inner wall of the support sleeve sleeved on one side of the closed opening of the catheter and the outer wall of the catheter are adhered and fixed. 5 .

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