CN211273217U - Trocar for implanting particles - Google Patents

Abstract

The application discloses a trocar for implanting particles, comprising: a needle cylinder; a needle core; and a push rod; the outer diameters of the needle core and the push rod are equal to the inner diameter of the needle cylinder, and the needle core and the push rod can be arranged in the needle cylinder in a pluggable mode. The trocar of this application, through the nook closing member reaches the external diameter of push rod with the design that the internal diameter of cylinder equals has avoided the problem of card shell between push rod and the cylinder.

Description

Trocar for implanting particles

Technical Field

The application relates to the field of medical treatment, in particular to a special trocar for particle implantation.

Background

In recent years, a novel medical technology for implanting radioactive particles into a tumor in a minimally invasive intervention mode to irradiate a tumor focus with a low dose for a long time so as to kill tumor cells and save the life of a cancer patient is popular in the aspect of tumor treatment. However, for this emerging professional surgery, there is no special radioactive particle implantation kit to complete the surgery. The universal particle implantation device is generally used for the existing medical tools such as other types of operation puncture needles and the like, replaces special puncture, and then carries out particle implantation by using a non-matched push rod. The sizes of puncture needles of different brands are different greatly, so that the diameter of a non-matched push rod is not matched with that of a needle cylinder, a clamping shell is formed between the push rod and the needle cylinder in an operation, the implantation is blocked and not smooth, and measures such as larger external force and the like need to be applied to carry out particle propelling implantation in the operation, so that particles are damaged, medicine is leaked, radioactive pollution is caused, and the aim and the requirement of implanting a radioactive source cannot be met; secondly, the length of the push rod is not matched with that of the puncture needle, so that the implantation position of the radioactive particles is possibly inconsistent with the depth indicated by the puncture needle, and the treatment effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a special trocar is implanted to radioactive seeds comprises special pjncture needle and the supporting particle push rod that uses of particle implantation, and the machining error of pjncture needle and push rod length, diameter all is in the within range of allowwing, makes the puncture particle implant smoothly in the art, avoids the card to hinder to it is impaired to solve the particle, and the problem of the accurate income position of radioactive seeds.

In order to achieve the above object, according to one aspect of the present application, there is provided a trocar for particle implantation, including: a needle cylinder; a needle core; and a push rod; the outer diameters of the needle core and the push rod are equal to the inner diameter of the needle cylinder, and the needle core and the push rod can be arranged in the needle cylinder in a pluggable mode.

Optionally, the trocar for implanting particles further comprises a needle sleeve, the needle sleeve further comprising: a needle guard body; the first cavity is arranged on the needle sleeve body, and one end of the first cavity is provided with a first opening on the surface of the needle sleeve body; and the second cavity is arranged on the needle sleeve body, and a second opening is formed in one end of the second cavity on the surface of the needle sleeve body.

Optionally, the first chamber is parallel to the second chamber.

Optionally, the first opening and the second opening are located at the same end of the needle guard body.

Optionally, the particle push rod is arranged in the first chamber in a pluggable manner.

Optionally, the syringe is removably disposed within the second chamber.

Optionally, the needle tip of the needle core is in a triangular pyramid shape, a conical shape or a bevel opening shape.

Optionally, the syringe comprises: a syringe body; and the positioning mark is sleeved on the needle cylinder body.

Optionally, the syringe body further comprises: and the positioning scale marks are arranged on the outer surface of the syringe body.

Optionally, the particle pushrod is a solid pushrod.

The trocar of this application, through the nook closing member reaches the external diameter of push rod with the design that the internal diameter of cylinder equals has avoided the problem of card shell between push rod and the cylinder.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic view of a trocar according to an embodiment of the present application;

FIG. 2 is a schematic view of a trocar according to an embodiment of the present application;

FIG. 3 is a schematic view of a putter in accordance with an embodiment of the present application;

FIG. 4 is a schematic view of a syringe according to an embodiment of the present application;

FIG. 5 is a schematic view of a stylet according to an embodiment of the present application; and

fig. 6A-6B are schematic views of a needle tip according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "inner", "outer", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in FIG. 1, in one embodiment of the present application, a trocar for implantation of a seed comprises: a needle cylinder 5, a needle core 6 and a push rod 4. The outer diameters of the needle core 6 and the push rod 4 are equal to the inner diameter of the needle cylinder 5, and the needle core 6 and the push rod 4 can be arranged in the needle cylinder 5 in a pluggable mode.

As shown in fig. 2, the present application relates to a trocar for particle implantation, comprising: needle guard body 1, first cavity 2 and second cavity 3. The first cavity 2 is arranged on the needle guard body 1, and one end of the first cavity 2 is provided with a first opening 21 on the surface of the needle guard body. The second chamber 3 is disposed on the needle guard body 1, and one end of the second chamber 3 is provided with a second opening 31 on the surface of the needle guard body 1.

In an embodiment of the present application, the first chamber 2 is parallel to the second chamber 3.

In one embodiment of the present application, the first opening 21 and the second opening 32 are located at the same end of the needle hub body.

As shown in fig. 2 and 3, in an embodiment of the present application, the trocar for implanting a seed further includes: a particle pusher 4, which is insertably arranged within said first chamber 2. In the present embodiment, the particle pushing rod 4 is a cylinder, but not limited thereto.

As shown in fig. 2 and 4, in an embodiment of the present application, the trocar for implanting a seed further includes: a needle cylinder 5, which is arranged in said second chamber 3 in a removable manner. In this embodiment, the syringe is a hollow cylinder, but the shape of the syringe is not limited thereto as long as it meets the actual needs.

As shown in fig. 2 and 5, in an embodiment of the present application, the trocar for implanting a seed further includes: the needle core 6 is arranged in the needle cylinder 5 in a pluggable way. In this embodiment, the stylet is a solid cylinder, but not limited thereto, and the shape of the stylet may be as long as it meets the actual needs.

As shown in fig. 6A to 6B, in an embodiment of the present invention, the needlepoint 61 of the core is in a triangular pyramid shape (fig. 6A), a conical shape, or a bevel shape (fig. 6B).

As shown in fig. 4, in an embodiment of the present application, the syringe 5 includes: syringe body 51 and positioning mark 52. The positioning mark 52 is sleeved on the syringe body 51. In the embodiment, the material of the positioning mark 52 is rubber, but not limited thereto.

As shown in fig. 4, in an embodiment of the present application, the syringe 5 further includes: and a positioning scale mark 53 provided on the outer surface of the cylinder 5. The graduation positioning is carried out by moving the positioning scale 52 to the graduation line 53 to be positioned, and the graduation positioning is used as the limitation of the depth of the needle insertion.

In an embodiment of the present application, the push rod is a solid push rod.

When the device is used, firstly, a puncture needle matched with a particle implantation device is selected to set the rubber positioning 52 marks on the expected scale mark 53 on the needle cylinder according to the expected puncture depth, then the needle core 6 and the needle cylinder 5 are combined to puncture tissues until the rubber positioning mark 53 is fixed, the needle core 6 is pulled out, the particle implantation device is used for connecting the tail part of the needle cylinder to prepare for the implantation of a radioactive source (the radioactive source is loaded to the implantation device in advance), then the particle push rod 4 matched with the puncture needle is inserted into the implantation device to push the radioactive source to enter the needle cylinder 5, and the radioactive source is continuously pushed to the front end of the needle cylinder, namely the position of the expected puncture depth, so that the implantation of one radioactive source is. And resetting the rubber positioning mark position, and repeating the operations until the radioactive source is implanted.

The utility model provides a special trocar is implanted to radioactive particle comprises special pjncture needle and the supporting push rod that uses are implanted to the particle, and the processing error of pjncture needle and push rod length, diameter all is in the within range of allowwing, makes the puncture particle implantation smooth and easy in the art, avoids the card to hinder to it is impaired to solve the particle, and the problem of the accurate position of going into of radioactive particle.

The particle puncture needle is a main protection object of the application for the combination of the special particle puncture needle and the particle push rod which is correspondingly matched with the special particle puncture needle.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A trocar for particle implantation, comprising:

a needle cylinder;

a needle core; and

a push rod;

the outer diameters of the needle core and the push rod are equal to the inner diameter of the needle cylinder, and the needle core and the push rod can be arranged in the needle cylinder in a pluggable mode.

2. The trocar for implanting a particle of claim 1, wherein the trocar for implanting a particle further comprises a needle sheath, the needle sheath further comprising:

a needle guard body;

the first cavity is arranged on the needle sleeve body, and one end of the first cavity is provided with a first opening on the surface of the needle sleeve body; and

the second cavity is arranged on the needle sleeve body, and a second opening is formed in one end of the second cavity on the surface of the needle sleeve body.

3. The trocar for implanting a particle of claim 2, wherein the first chamber is parallel to the second chamber.

4. The trocar for implanting a particle of claim 2, wherein the first opening and the second opening are located at a same end of the needle hub body.

5. The trocar of claim 2, wherein the push rod is insertably disposed within the first chamber.

6. The trocar of claim 2, wherein the needle cartridge is removably disposed within the second chamber.

7. The trocar for implanting a particle according to claim 1, wherein the needle tip of the trocar is formed in a triangular pyramid shape, a conical shape, or a bevel shape.

8. The trocar for implanting a particle of claim 6, wherein the needle cylinder comprises:

a syringe body; and

the positioning mark is sleeved on the needle cylinder body.

9. The trocar for implanting a particle of claim 8, wherein the needle cylinder body further comprises:

and the positioning scale marks are arranged on the outer surface of the syringe body.

10. The trocar for implanting a particle of claim 5, wherein the pushrod is a solid pushrod.

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