CN211884966U

CN211884966U - Special particle implantation device for multipoint endoscope

Info

Publication number: CN211884966U
Application number: CN202020007765.9U
Authority: CN
Inventors: 李同昌
Original assignee: Hefei Changtong Medical Equipment Co ltd
Current assignee: Hefei Changtong Medical Equipment Co ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-11-10
Anticipated expiration: 2030-01-03

Abstract

A special particle implanter for a multi-point endoscope belongs to the technical field of medical instruments. A telescopic multi-point particle implanter is designed, the structure of the particle implanter comprises a propeller (5), the propeller (5) is in a boss shape, four planes which are distributed annularly are arranged on the upper part of the boss, pin holes (501) are machined on the planes, pins (9) are installed in the pin holes (501), the pins (9) penetrate through earrings of a needle head (1), the needle head (1) is a sterile needle tube which is communicated from front to back, puncture ports (101) and air inlets (102) are arranged at two ends of the needle tube, the puncture ports (101) are sharp tube openings, radioactive particles (11) are filled in the tube openings, the propeller (5) is installed in a sterile hose (3), and the propeller (5) and the sterile hose (3) jointly form a pressure transformation chamber (15); the propeller is provided with a guide rod (8).

Description

Special particle implantation device for multipoint endoscope

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a special particle implantation device for a multipoint endoscope.

Background

The internal radiation therapy is that under the guidance of CT or magnetic resonance image, the radioactive particles are implanted by using operation needle to kill cancer cells, and is an important therapeutic means for malignant tumor. Compared with the common radical excision operation, the internal radiation treatment has fewer complications and less wound to the patient. Compared with external radiotherapy, the internal radiotherapy has better local controllability, and has better treatment effect no matter for single internal radiotherapy of low-risk patients or external irradiation combined internal radiotherapy of middle-high-risk patients. Traditional radiotherapy adopts the mode of hose + steel wire + single felting needle, can only place a radioactive particle in tumor tissue once interlude, and cancer cell often grows in clusters in patient's in vivo, and the inhibitory effect of single radioactive particle is little.

Disclosure of Invention

The technical task of the utility model is to solve the deficiencies of the prior art and provide a special particle implantation device for a multi-point endoscope.

The core technical idea of the utility model is that: a telescopic multi-point particle implanting device is designed, a telescopic needle group is arranged at the end part of an endoscope catheter, the structure comprises a propeller, a guide rod, a spring, a needle and the like, when the endoscope catheter walks in a tissue blood vessel, the propeller retracts in a hose under the action of the spring, a pressure changing cavity is sealed from the tail end under the combined action of the propeller and an isolator, human tissue fluid is sealed at the head part of the hose from a guide hole at the head part of the hose, when the hose reaches a canceration position, a piston at the tail part of the hose is pushed, physiological saline in the hose is acted at the tail part of the propeller through the conduction of the hose, the propeller is enabled to move forwards, the needle is further driven to extend out from a first guide hole, a second guide hole, a third guide hole and a fourth guide hole to penetrate into the tissue, when the propeller is separated from the isolator, the physiological saline at the tail part of the propeller enters, after entering from the air inlet at the tail part of the needle head, the radioactive particles are sprayed out from the puncture hole.

After implantation, the piston is pulled backwards to restore the pressure in the hose to a low pressure state, and at the moment, the propeller retracts into the hose again under the action of the recoil spring.

The utility model provides a technical scheme that its technical problem adopted is:

a particle implanter special for a multi-point endoscope comprises a propeller, wherein the propeller is in a boss shape, four planes which are distributed annularly are arranged on the upper part of the boss, pin holes are processed on the planes, pins are installed in the pin holes and penetrate through earrings of a needle head, an aseptic needle tube is conducted in front of and behind the needle head, two ends of the needle tube are provided with a puncture hole and an air inlet, the puncture hole is a sharpened tube opening, radioactive particles are filled in the tube opening, the propeller is installed in the aseptic tube, and the propeller and the aseptic tube jointly form a pressure transformation chamber; the propeller is provided with a guide rod.

The sterile hose head is provided with a spring base, the spring base is positioned in the center of the sterile hose head and is internally provided with a re-entry spring, needles are distributed at equal angles around the base, needle tubes of the needles abut against an external guide inclined plane of the spring base, puncture ports are respectively aligned to a first guide hole, a second guide hole, a third guide hole and a fourth guide hole, and the first guide hole, the second guide hole, the third guide hole and the fourth guide hole are holes at the end part of the sterile hose.

Needles are distributed around the propeller at equal angles, a sleeve is arranged outside the needles, and the outer diameter of the sleeve is equal to the inner diameter of the first guide hole, the second guide hole, the third guide hole and the fourth guide hole.

The inside installation spacer of aseptic hose, the spacer forms for two ring shape structures concatenation, and the internal diameter of semicircle ring equals the external diameter of propeller bottom round platform, and aseptic hose passes through locking screw with the spacer and is connected.

The tail part of the sterile hose is provided with a push rod and a piston.

Compared with the prior art, the utility model discloses a special particle implantation device of multipoint mode endoscope produced beneficial effect is:

(1) compared with a single-point implantation system, the mechanism designed by the invention can implant radioactive particles at multiple parts of a tumor under the condition of one-time intubation, so that a better killing effect can be achieved, the size of the particle diameter can be better controlled, and adverse reactions brought by the conventional large-diameter single-particle radioactive source are reduced.

(2) Compared with the traditional puncture structure when exposed, the invention can better protect the visceral organs of a patient from secondary injury.

(3) The normal saline is used as the telescopic power of the needle head, and meanwhile, the normal saline can also eject the radioactive particles from the needle head without providing additional power.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a structural working schematic diagram of the present invention;

FIG. 3 is an end view of the sterile hose of the present invention;

FIG. 4 is a three-dimensional view of the spacer structure of the present invention;

FIG. 5 is a three-dimensional view of the structure of the needle head of the utility model;

FIG. 6 is a three-dimensional view of the structure propeller of the present invention;

in the figure, 1, a needle head, 101, a puncture port, 102, an air inlet, 2, a sleeve, 3, a sterile hose, 4, a spacer, 5, a propeller, 501, a pin hole, 6, a recoil spring, 7, a spring base, 8, a guide rod, 9, a pin, 10, a push rod, 11, radioactive particles, 12, a locking screw, 131, a first guide hole, 132, a second guide hole, 133, a third guide hole, 134, a fourth guide hole, 14, a piston, 151 and a variable pressure chamber

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

A multipoint mode endoscope special particle implantation device comprises a propeller 5, wherein the propeller 5 is in a boss shape, the upper portion of the boss is provided with four planes which are distributed annularly, a pin hole 501 is machined in each plane, a pin 9 is installed in each pin hole 501, each pin 9 penetrates through an earring of a needle head 1, a sterile needle tube which is communicated with the front and the back of each needle head 1 is arranged, two ends of each needle tube are provided with a puncture hole 101 and an air inlet 102, each puncture hole 101 is a sharpened tube opening, radioactive particles 11 are filled in each tube opening, the propeller 5 is installed in a sterile hose 3, and the propeller 5 and the sterile hose 3 jointly form a pressure transformation chamber 15; the propeller is provided with a guide rod 8.

As a first embodiment of the present invention, the radioactive seeds 11 may be pre-embedded in the needle 1.

As the first embodiment of the utility model, when the force is applied, the needle head 1 can swing around the pin 9 by a small angle.

The head of the sterile hose 3 is provided with a spring base 7, the spring base 7 is positioned in the center of the head of the sterile hose 3, a recoil spring 6 is arranged in the base, needles 1 are distributed at equal angles around the base, a needle tube of the needle 1 abuts against an external guide inclined plane of the spring base 7, a puncture hole 101 is respectively aligned with a first guide hole 131, a second guide hole 132, a third guide hole 133 and a fourth guide hole 134, and the first guide hole 131, the second guide hole 132, the third guide hole 133 and the fourth guide hole 134 are open holes at the end part of the sterile hose 3.

As a first embodiment of the present invention, a separate end cap is provided with the first guide hole 131, the second guide hole 132, the third guide hole 133 and the fourth guide hole 134, and the end cap is installed in the hose after the propeller 5 and the needle are installed in the hose.

As the first embodiment of the utility model, the middle part of the spring base 7 is provided with a hole, and the guide rod 8 is arranged in the hole.

Needles 1 are distributed around the pusher 5 at equal angles, a sleeve 2 is arranged outside the needles, and the outer diameter of the sleeve 2 is equal to the inner diameter of the first guide hole 131, the second guide hole 132, the third guide hole 133 and the fourth guide hole 134.

As the first embodiment of the present invention, when the pusher 5 is pushed forward, the sleeve on the needle enters the first guiding hole 131, the second guiding hole 132, the third guiding hole 133 and the fourth guiding hole 134, and the gap between the guiding hole and the needle is filled.

The inside installation spacer 4 of aseptic hose 3, spacer 4 are formed by two semicircle ring shaped structure concatenations, and the internal diameter of semicircle ring equals the external diameter of 5 bottom round platforms of propeller, and aseptic hose 3 passes through locking screw 12 with spacer 4 and is connected.

As a first embodiment of the present invention, the spacer 4 is provided with a limit stop, and the single-side limit position of the propeller 5 is set by the spacer.

The tail of the sterile hose 3 is provided with a push rod 10 and a piston 14.

As the first embodiment of the utility model, when the endoscope catheter is wandered in the tissue vessel, under the action of the spring, the propeller is retracted in the hose, and is closed from the tail end by the combined action of the propeller and the isolator, and enters the human tissue fluid from the guide hole of the hose head to be sealed at the hose head.

Further, when the hose reaches the canceration position, the piston at the tail part of the hose is pushed, and the physiological saline generated in the hose acts on the tail part of the propeller through the conduction of the hose, so that the propeller moves forward, and then the needle head is driven to extend out of the first guide hole, the second guide hole, the third guide hole and the fourth guide hole to penetrate into tissues.

Further, when the propeller is separated from the contact with the isolator, the physiological saline at the tail part of the propeller enters the variable pressure cavity and then enters from the air inlet at the tail part of the needle head to spray the radioactive particles out of the puncture hole.

In summary, the present invention is not limited to the above embodiments, and those skilled in the art can provide other embodiments within the teaching of the present invention, but these embodiments are included in the scope of the present invention.

Claims

1. A special particle implantation device for a multi-point endoscope is characterized in that: the device comprises a propeller (5), wherein the propeller (5) is in a boss shape, four planes which are distributed annularly are arranged on the upper part of the boss, a pin hole (501) is machined in each plane, a pin (9) is installed in each pin hole (501), each pin (9) penetrates through an ear ring of a needle (1), each needle (1) is a sterile needle tube which is communicated from front to back, a puncture hole (101) and an air inlet (102) are formed in each end of each needle tube, each puncture hole (101) is a sharpened tube opening, radioactive particles (11) are filled in each tube opening, the propeller (5) is installed in a sterile hose (3), and the propeller (5) and the sterile hose (3) jointly form a pressure transformation chamber (15); the propeller is provided with a guide rod (8).

2. The multi-point particle implanter special for the endoscope of claim 1, wherein the sterile flexible tube (3) has a spring base (7) at the head, the spring base (7) is located at the center of the head of the sterile flexible tube (3) and is internally provided with a re-feeding spring (6), the needles (1) are distributed around the base at equal angles, the needle tubes of the needles (1) abut against the outer guiding inclined plane of the spring base (7), the puncturing ports (101) are respectively aligned with a first guiding hole (131), a second guiding hole (132), a third guiding hole (133) and a fourth guiding hole (134), and the first guiding hole (131), the second guiding hole (132), the third guiding hole (133) and the fourth guiding hole (134) are holes at the end of the sterile flexible tube (3).

3. The multi-point particle implanter for endoscope use according to claim 2, wherein the needles (1) are equiangularly distributed around the pusher (5), a sleeve (2) is mounted on the outside of the needles, and the outer diameter of the sleeve (2) is equal to the inner diameters of the first guide hole (131), the second guide hole (132), the third guide hole (133) and the fourth guide hole (134).

4. The multi-point particle implanter special for endoscope of claim 1, characterized in that the sterile flexible tube (3) is internally provided with a spacer (4), the spacer (4) is formed by splicing two circular ring structures, the inner diameter of the circular ring structure is equal to the outer diameter of the circular table at the bottom of the propeller (5), and the sterile flexible tube (3) and the spacer (4) are connected through a locking screw (12).

5. The multi-point endoscopic dedicated particle implanter according to claim 1, wherein the sterile tube (3) is provided with a push rod (10) and a piston (14) at its rear end.