CN202751686U

CN202751686U - Novel radioactive particle implantation device

Info

Publication number: CN202751686U
Application number: CN 201220410679
Authority: CN
Inventors: 王涛; 田昆玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-17
Filing date: 2012-08-17
Publication date: 2013-02-27
Anticipated expiration: 2022-08-17

Abstract

The utility model discloses a novel radioactive particle implantation device which can be conveniently taken out after implantation and has no hurt to a patient. The novel radioactive particle implantation device is characterized in that one end of a metal wire woven mesh (1) capable of accommodating radioactive particles (9) is provided with a fixing end head (2) for fixing the end portion of a metal wire, and a closing-up portion (3) and a tail-end radioactive structure (4) are arranged inside the other end of the metal wire woven mesh (1). The novel radioactive particle implantation device can be placed at the positions closest to tumors along human body lumens, such as tracheas, esophagus, a bile duct, a ureter and a blood vessel to perform radioactive particle radiotherapy, the radioactive particles can be conveniently recycled, and the novel radioactive particle implantation device can be used for treating hyperplasia and restenosis of the tumor penetrating through a support network after a support is implanted into a human body.

Description

The Novel radioactive particle implantation device

Technical field:

This utility model relates to a kind of medical apparatus and instruments, and specifically a kind of radioactive particle that will be used for the treatment of tumor is implanted to the device of body lumen.

Background technology:

Traditional outer X-ray therapy all can't be kept apart normal structure and tumor tissues; therefore in therapeutic process, can cause damage to normal tissue, organ; also can owing to giving less than enough therapeutic doses for the protection normal structure, tumor can not be effected a radical cure thoroughly.In recent years, the man-made isotope that many half-life are short, irradiation distance is near, radiant is low is in succession out manufactured and be applied to clinical, so that the imagination of advancing the radiation treatment of Wicresoft for the tumor tissues part becomes possibility, closely planting treatment tumor technology between the radioactive particle tissue is exactly one of them.But, implant owing to adopt the implantation instrument of metal shell to carry out the human body puncture, large to patient trauma, and can't take out after implanting, body produces foreign body reaction easily, particularly for the tumor in the body lumen, the narrow unsatisfactory curative effect of end flap's hypertrophy.

Summary of the invention:

Goal of the invention of the present utility model is can conveniently take out after disclosing a kind of implantation, to the AT radioactive particle implanter of patient.

Realize that technical solution of the present utility model is as follows: an end that can hold the woven wire cloth of radioactive particle is provided with the fixedly termination of a fixing metal silk end, and the radial structure of a mouth and tail end is arranged in the other end of woven wire cloth.

Described metal wire knitted is provided with at least more than one location structure on the net, and the maximum gauge of location structure is greater than the diameter of woven wire cloth or full-size radially.

Described mouth and location structure are two or three.

Described location structure is the taper braiding structure that the tinsel self of woven wire cloth forms.

Described location structure is that woven wire cloth has one to have at least three oblique supporting constructions of stretching out foot.

The tail end of described woven wire cloth has a nut, and the screw fit corresponding with is to stop up the tail end of woven wire cloth.

The mouth of described woven wire cloth is provided with an elastic O-ring.

The mouth of described woven wire cloth is coated with the high resiliency macromolecule membrane.

Affixed one helical form in the described fixedly end/tower-like extended line of spiral, the other end of extended line are provided with one again and take out the termination.

This utility model can be positioned over radioactive particle implanter near tumor locus along the tube chamber of human body such as trachea, esophagus, bile duct, urinary catheter, blood vessel etc., carry out the radioactive particle radiotherapy, by the time radioactive particle has been spent the half-life and radioactive particle implanter has been taken out again, radioactive particle can conveniently reclaim, human body does not stay foreign body after the treatment, also can be used for passing the hypertrophy of support grid and the treatment of restenosis for tumor behind the human body implant frame simultaneously.

Description of drawings:

Fig. 1 is the structural representation of the first embodiment of the present utility model.

Fig. 2 is the right view of Fig. 1.

Fig. 3 is for inserting radioactive particle the sketch map in the woven wire cloth.

Fig. 4 is that a plurality of radioactive particles place the sketch map in the woven wire cloth.

Fig. 5 is the structural representation of the second embodiment of the present utility model.

Fig. 6 is the structural representation of the 3rd embodiment of the present utility model.

Fig. 7 is the structural representation of the 4th embodiment of the present utility model.

Fig. 8 is Fig. 7 left view.

Fig. 9 is the structural representation of the 5th embodiment of the present utility model.

Figure 10 is the structural representation of the 6th embodiment of the present utility model.

Figure 11 is the structural representation of the 7th embodiment of the present utility model.

The specific embodiment:

See also Fig. 1～Figure 11, specific embodiment of the utility model is as follows: an end that can hold the woven wire cloth 1 of radioactive particle 9 is provided with the fixedly termination 2 of a fixing metal silk end, and the radial structure 4 of a mouth 3 and tail end is arranged in the other end of woven wire cloth 1.Woven wire cloth 1 forms tubular by at least 4 niti-shaped memorial alloy silk/stainless steel silks/cobalt-base alloys silk braiding, can hold radioactive particle 9 in the woven wire cloth 1, radioactive particle 9 is iodine-125, gold-198, material such as palladium-103 grade is made, one end of woven wire cloth 1 (being front end) is provided with a fixing fixedly termination 2 that consists of many one metal wires end of woven wire cloth 1, the other end of woven wire cloth 1 (being tail end) has radial structure 4 (Fig. 1 of a mouth 3 and tail end, shown in Figure 2), this end and be the opening shape, the front end that is woven wire cloth 1 is closed, and its tail end is the opening shape; During actual the use, radial structure 4 and the mouth 3 of at least one radioactive particle 9 by woven wire cloth 1 tail end entered woven wire cloth 1 inside (shown in Figure 3), radioactive particle 9 is by behind the mouth 3, mouth 3 stops radioactive particle 9 effusion woven wire cloths 1, and simultaneously the diameter of radial structure 4 is greater than the diameter of woven wire cloth 1 and support in the body lumen internal face and play positioning action, prevent woven wire cloth 1 at the body lumen intrinsic displacement, the radioactive particle 9 of putting into according to actual needs woven wire cloth 1 can be more than one or the combination (shown in Figure 4) of the radioactive particle 9 that is uneven in length; In use, the disease sites of human body may be at the knee of the tube chamber of human body, then need woven wire cloth 1 should be easy to bending and location, therefore woven wire cloth 1 is provided with at least more than one location structure 5 (shown in Figure 1), the maximum gauge of location structure 5 is greater than the diameter of woven wire cloth 1 or full-size radially, when woven wire cloth 1 bends in tube chamber, all there is location structure 5 on both sides in the inflection point, as being provided with a location structure 5 at fixing 2 positions, termination, then location structure 5 and tail end radial structure 4 form two position locations (shown in Figure 1); In another embodiment, described mouth 3 and location structure 5 are two or three (shown in Figure 6), form the multistage cone structure, can strengthen the anti-displacement effect of

location structure

5,3 of a plurality of mouths can increase the whole compliance of woven wire cloth 1, and the radioactive particle between two mouths 39 can be at woven wire cloth 1 internal shift, mouth 3 is easier to make the certain angle of woven wire cloth 1 bending simultaneously, be more convenient for doctor's the use of a plurality of mouths 3 and location structure 5, better and the woven wire cloth 1 of locating effect is easy to bending, as forming u shape or S shape; Above-mentioned location structure 5 is the taper braiding structure (shown in Figure 1) that the tinsel self of woven wire cloth 1 forms, the diameter of taper braiding structure or radially full-size greater than woven wire cloth 1 diameter or full-size radially, perhaps location structure 5 has one to have at least three oblique supporting construction (Fig. 7 that stretch out foot for woven wire cloth 1, shown in Figure 8), described oblique stretch out foot can be directly with woven wire cloth 1 welding or there is a becket to be connected with woven wire cloth 1, and obliquely stretch out the welding of foot and becket, form 3 positioning anchor structure, two kinds of above-mentioned location structures 5 all can play positioning action preferably, the latter is little to the flow resistance of the gas/liquid in the body lumen, reduce the barrier effect of 5 pairs of gas/liquid of location structure, concrete that a kind of location structure 5 of selecting is decided on the practical application position; For preventing that radioactive particle 9 is from woven wire cloth 1 interior effusion, tail end at woven wire cloth 1 is provided with a nut 6, nut 6 and woven wire cloth 1 affixed and corresponding with one screw 7 cooperates to stop up the tail end (shown in Figure 9) of woven wire cloth 1, within radioactive particle 9 is packed woven wire cloth 1 into, screw 7 is screwed onto nut 6 places to be tightened, can guarantee that radioactive particle 9 can not overflow, because radioactive particle 9 will cause serious problem in case overflow; Also can be on the mouth 3 of woven wire cloth 1 (at least at the tail end place), cover has elasticity O shape rubber ring 8 (shown in Figure 10), or woven wire cloth 1 on mouth 3 (at least at the tail end place), apply the high resiliency macromolecule membrane, be used for stoping the effusion of radion; When reality is used, this utility model is after human body is placed a period of time, need to take out, then use special-purpose grabbing device, under the help of scope, catch fixedly termination 2 that this utility model is taken out, but less such as this utility model size, be placed on the fine tube chamber of human body and scope can't arrive, make and take out difficulty, then can be at fixing affixed one helical form in 2 places, termination/tower-like extended line 11 of spiral (shown in Figure 11), the other end of extended line 11 is provided with one again and takes out termination 10, takes out termination 10 during use and is positioned at the larger position of body lumen diameter, take out termination 10 as long as catch when then taking out, just can sequentially this utility model be taken out.

Claims

1. Novel radioactive particle implantation device, it is characterized in that an end that can hold the woven wire cloth (1) of radioactive particle (9) is provided with the fixedly termination (2) of a fixing metal silk end, has the radial structure (4) of a mouth (3) and tail end in the other end of woven wire cloth (1).

2. by Novel radioactive particle implantation device claimed in claim 1, it is characterized in that described woven wire cloth (1) is provided with at least more than one location structure (5), the maximum gauge of location structure (5) is greater than the diameter of woven wire cloth (1) or full-size radially.

3. by claim 1 or 2 described Novel radioactive particle implantation devices, it is characterized in that described mouth (3) and location structure (5) are two or three.

4. by Novel radioactive particle implantation device claimed in claim 3, it is characterized in that described location structure (5) is a taper braiding structure of tinsel self formation of woven wire cloth (1).

5. by Novel radioactive particle implantation device claimed in claim 3, it is characterized in that described location structure (5) has one to have at least three oblique supporting constructions of stretching out foot for woven wire cloth (1).

6. by claim 4 or 5 described Novel radioactive particle implantation devices, the tail end that it is characterized in that described woven wire cloth (1) has a nut (6), and the screw corresponding with (7) cooperates to stop up the tail end of woven wire cloth (1).

7. by claim 4 or 5 described Novel radioactive particle implantation devices, it is characterized in that the mouth (3) of described woven wire cloth (1) is provided with an elasticity O shape rubber ring (8).

8. by claim 4 or 5 described Novel radioactive particle implantation devices, it is characterized in that the mouth (3) of described woven wire cloth (1) is coated with the high resiliency macromolecule membrane.

9. by claim 4 or 5 described Novel radioactive particle implantation devices, it is characterized in that described fixedly termination (2) locates the tower-like extended line of affixed one helical form/spiral (11), the other end of extended line (11) is provided with one again and takes out termination (10).