CN217040870U

CN217040870U - Particle-carrying drainage catheter

Info

Publication number: CN217040870U
Application number: CN202122933586.5U
Authority: CN
Inventors: 宋进华; 马博远; 顾婷婷; 孙号; 罗森
Original assignee: Canyon Medical Inc
Current assignee: Canyon Medical Inc
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-07-26
Anticipated expiration: 2031-11-26

Abstract

The utility model relates to a particle-carrying drainage catheter, which comprises a drainage device and a particle loading device, wherein the drainage device comprises a drainage tube body and a drainage joint, the drainage joint is fixed at one end of the drainage tube body, the drainage tube body is provided with a drainage cavity and a particle loading cavity, the drainage cavity is provided with a drainage port, and the particle loading device is inserted into the particle loading cavity; the particle loading device comprises an outer pipe body, an outer joint, an inner cylinder and an inner joint, wherein the outer joint is detachably and fixedly connected with the particle loading cavity, and the inner joint is detachably and fixedly connected with the outer joint; one end of the outer tube body is plugged, the other end of the outer tube body is fixedly connected with the outer joint, one end of the inner column body is fixedly connected with the inner joint, and the other end of the inner column body is inserted into the outer tube body and is flush with the plugged end of the outer tube body. The utility model overcomes be difficult to change among the prior art or take out particle, change and load a great deal of problems such as particle ratio is complicated, abandonment particle polluted environment again behind the pipe.

Description

Particle-carrying drainage catheter

Technical Field

The utility model relates to a particle-carrying drainage catheter, which belongs to the technical field of percutaneous puncture drainage of bile.

Background

Percutaneous hepatic puncture biliary drainage (PTCD, i.e., a drainage catheter is percutaneously punctured to a biliary obstruction site under the guidance of ultrasound or rays to drain effusion) and radioactive particle (radioactive sealed seed source, hereinafter referred to as particle) implantation have been widely used for biliary obstruction caused by malignant tumor. The radioactive particles are implanted into the selected part of the tumor for treatment, and the drainage catheter is used for draining the effusion to reduce jaundice, so that the method is an effective means for controlling the prophase of the tumor. With the progress of the technology, a drainage catheter capable of carrying particles has appeared, a drainage cavity and a particle loading cavity are arranged on the drainage catheter, after a designated part is placed by percutaneous puncture, the functions of drainage and radioactive treatment on the obstructed part are realized simultaneously, the dual effects of drainage and tumor resistance are achieved, normal tissues are not damaged or less damaged, and the side effect after radiotherapy is reduced.

However, to the applicant's knowledge, existing particle-carrying drainage catheters suffer from several problems:

1) the particles are difficult to install, and the particles are easy to displace in the drainage tube, because the effective distance of the particle rays carried by the catheter is short, the particles cannot be accurately positioned after displacement, the curative effect of accurate and effective radioactive treatment on the pathological change part on the obstruction part is poor, and the curative effect cannot be estimated.

2) After the particles are arranged in the drainage catheter, the drainage catheter is implanted into a patient body, and the particles cannot be taken out under the condition that the catheter is not replaced.

3) When the drainage catheter is blocked, the catheter is replaced, and the complex processes of particle loading, positioning and implantation need to be carried out again.

4) After the treatment is finished, the drainage catheter loaded with the particles is discarded together, and the particles cannot be recycled, so that the environment is polluted.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: provides a drainage catheter which can accurately place particles to a pathological change position, is reliably fixed, and is convenient to replace and recover the particles.

In order to solve the technical problem, the utility model provides a technical scheme is: a particle-carrying drainage catheter comprises a drainage device and a particle loading device, wherein the drainage device comprises a drainage tube body and a drainage joint, the drainage joint is fixed at one end of the drainage tube body, a drainage cavity and a particle loading cavity are arranged on the drainage tube body, a drainage port is arranged on the drainage cavity, and the particle loading device is inserted into the particle loading cavity; the particle loading device comprises an outer pipe body, an outer joint, an inner cylinder and an inner joint, wherein the outer joint is detachably and fixedly connected with the particle loading cavity, and the inner joint is detachably and fixedly connected with the outer joint; one end of the outer tube body is plugged, the other end of the outer tube body is fixedly connected with the outer joint, one end of the inner column body is fixedly connected with the inner joint, and the other end of the inner column body is inserted into the outer tube body and is flush with the plugged end of the outer tube body; when the particle loading device is used, the inner column body is cut into three sections, namely a supporting section abutting against the blocking end of the outer tube body, a connecting section fixedly connected with the inner joint and a middle section located between the supporting section and the connecting section, and the part of the outer tube body corresponding to the middle section forms a particle loading section.

The utility model discloses adopt the structure mode that interior cylinder and outer body cup jointed with particle loading attachment, it is internal to make interior cylinder insert the outer tube, when using, take out interior cylinder from outer body, tailor to the three-section, at first insert outer body with the support section, then pack the particle in outside body, at last with linkage segment and outer body rigid coupling, thereby make the particle place the suitable position department of outer body, interior cylinder is used for the location, fixed particle, the particle is difficult for moving in outer tube like this, consequently, the particle that exists has been overcome and has easily moved and cause unable accurate positioning, carry out the defect of accurate effectual radiation therapy to the pathological change position. And the inner column body and the outer tube body are fixedly connected in a detachable mode, and the inner column body can be taken out, so that ions can be conveniently filled and taken out, and the problems that in the prior art, the particles are difficult to replace or take out, the particles are difficult to reload after a guide pipe is replaced, the environment is polluted by the discarded particles and the like are solved.

In order to accurately and conveniently place the particle loading section, the technical scheme is further improved as follows: and the outer tube body is provided with scale mark development marks. This allows accurate positioning of the ion loading section under ultrasound or radiation guidance.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the catheter body.

Figure 3 is a schematic view of an outer tube.

Fig. 4 is a schematic view of the inner cylinder.

Reference numerals: 1. a drainage device; 101. a drainage tube body; 102. a drainage connector; 103. a drainage cavity; 104. a particle loading chamber; 2. a particle loading device; 201. an outer tubular body; 202. an outer joint; 203. an inner cylinder; 204. a nipple.

Detailed Description

Example one

The embodiment relates to a particle-carrying drainage catheter, as shown in fig. 1-4, comprising a drainage device 1 and a particle loading device 2, wherein the drainage device 1 comprises a drainage tube body 101 and a drainage joint 102, the drainage joint 102 is fixed at one end of the drainage tube body 101, a drainage cavity 103 and a particle loading cavity 104 are arranged on the drainage tube body 101, a drainage port (not shown in the figure) is arranged on the drainage cavity 103, the particle loading device 2 is inserted into the particle loading cavity 104, and is preferable, and the drainage tube body is made of medical materials such as polyurethane. The shape of the drainage catheter is not limited, and can be circular or oval, and other cavities are possible on the drainage catheter body besides the drainage cavity and the particle loading cavity according to the needs.

As shown in fig. 1, 3 and 4, the particle loading device 2 comprises an outer tube 201, an outer joint 202, an inner cylinder 203 and an inner joint 204, and preferably, the inner cylinder 203 and the outer tube 201 are made of polyurethane. One end of the outer tube body 201 is plugged, and the other end of the outer tube body is fixedly connected with the outer joint 202; one end of the inner column 203 is fixedly connected with the inner joint 204, and the other end of the inner column 203 is inserted into the outer tube body 201; the inner connector 204 is detachably and fixedly connected with the outer connector 202, and the outer connector is detachably and fixedly connected with the particle loading cavity. Preferably, the inner joint is provided with an external thread, the outer joint is provided with an internal thread matched with the external thread, and the inner joint and the outer joint are fixedly connected through threads; similarly, the outer joint 202 is also threadably connected to the particle loading chamber 104. Of course, the inner and

outer connectors

204, 202, and the outer connector 202 and the particle loading chamber 104 may be connected by other means, such as by snap-fit connections, etc.

Preferably, the drainage joint, the inner joint and the outer joint are luer joints.

When in use, the drainage device and the particle loading device are assembled together to form a drainage catheter, the drainage catheter is implanted into a position needing drainage and radiotherapy according to a conventional operation mode, the accurate position is determined, the particle loading device is drawn out, the inner cylinder is drawn out, the length and the position of the particle loading section on the outer tube body are confirmed, cutting the inner column body into three sections, namely a supporting section abutting against the blocking end of the outer tube body, a connecting section fixedly connected with the inner joint and a middle section positioned between the supporting section and the connecting section, wherein the part of the outer tube body corresponding to the middle section forms a particle loading section, then the supporting section of the inner column body is inserted into the outer tube body and is flush with the plugging end of the outer tube body, then particles are loaded into the outer tube body for a proper length (namely, ions are loaded in the particle loading section), and finally the connecting section and the outer tube body are fixed to be fixed, so that the assembly of the particle loading device is completed. And then the particle loading device is arranged in the particle loading cavity of the drainage tube body, so that the implantation of the particles is completed. When the catheter needs to be taken out or replaced, the particle loading device can be directly taken out, or after the particle loading device is taken out, a new drainage device is installed, and then the particle loading device is directly placed into a new particle loading cavity.

Example two

The embodiment is an improvement on the first embodiment, and the improvement is as follows: the outer tube 201 is provided with scale mark development marks. Like this in the use, when implanting drainage catheter the position that needs drainage and radiotherapy, according to the scale mark development mark of outer body, can confirm accurate position, take out particle loading attachment this moment, take out interior cylinder, with interior cylinder end and outer body end alignment, cut out interior cylinder according to the scale position of having confirmed and the length that the particle was implanted to needs, make the position of particle loading section more accurate, can be more accurate and conveniently place the particle.

Through the improvement, the embodiment has the following advantages: 1) can pinpoint the particle and load the position, the convenient particle that loads stabilizes fixed particle realizes accurate, controllable treatment. 2) Can conveniently take out the particles, change the catheter and increase the convenience of medical staff. 3) When the drainage catheter is replaced, the patient does not need to be repositioned and loaded with particles, so that the pain of the patient is relieved. 4) When the catheter is discarded, the particles can be recovered, and the environment is protected.

Claims

1. A particle-carrying drainage catheter comprises a drainage device and a particle loading device, wherein the drainage device comprises a drainage tube body and a drainage joint, the drainage joint is fixed at one end of the drainage tube body, a drainage cavity and a particle loading cavity are arranged on the drainage tube body, a drainage port is arranged on the drainage cavity, and the particle loading device is inserted into the particle loading cavity; the method is characterized in that: the particle loading device comprises an outer pipe body, an outer joint, an inner cylinder and an inner joint, wherein the outer joint is detachably and fixedly connected with the particle loading cavity, and the inner joint is detachably and fixedly connected with the outer joint; one end of the outer tube body is plugged, the other end of the outer tube body is fixedly connected with the outer joint, one end of the inner column body is fixedly connected with the inner joint, and the other end of the inner column body is inserted into the outer tube body and is flush with the plugged end of the outer tube body; when the particle loading device is used, the inner column body is cut into three sections, namely a supporting section abutting against the blocking end of the outer tube body, a connecting section fixedly connected with the inner joint and a middle section located between the supporting section and the connecting section, and the part of the outer tube body corresponding to the middle section forms a particle loading section.

2. The particle-carrying drainage catheter according to claim 1, wherein: and the outer tube body is provided with scale mark development marks.

3. The particle-carrying drainage catheter according to claim 1 or 2, wherein: the inner joint is provided with an external thread, the outer joint is provided with an internal thread matched with the external thread, and the inner joint and the outer joint are fixedly connected through threads.

4. The particle-carrying drainage catheter according to claim 1 or 2, wherein: the inner joint and the outer joint are connected through a buckle type connecting piece.

5. The particle-carrying drainage catheter according to claim 1 or 2, wherein: the drainage tube body, the inner column body and the outer tube body are all made of polyurethane.

6. The particle-carrying drainage catheter according to claim 1 or 2, wherein: the drainage joint, the inner joint and the outer joint are luer joints.