CN217566545U

CN217566545U - Self-closing structure of casing puncture outfit in vitreous body cutting operation

Info

Publication number: CN217566545U
Application number: CN202221206455.5U
Authority: CN
Inventors: 方立建; 魏文斌
Original assignee: Liangxiang Hospital Of Fangshan District Beijing
Current assignee: Liangxiang Hospital Of Fangshan District Beijing
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-10-14
Anticipated expiration: 2032-05-16

Abstract

The utility model provides a self-closing structure of casing puncture ware among vitreous cutting operation relates to medical instrument technical field, has solved the passageway that exists among the prior art and establish with the sleeve pipe and has not self-closing function, makes the technical problem of intraocular liquid or gas loss easily. The device comprises a self-closing valve and a puncture needle, wherein the puncture needle can extend into the self-closing valve and the self-closing valve can be inserted into a vitreous cavity under the pushing of the puncture needle; the self-closing valve comprises a self-closing section, the self-closing section is made of silica gel, and the self-closing section can be expanded outwards under the action of the puncture system so as to conduct the self-closing section; when the puncture system is pulled out of the self-closing section, the self-closing section can be retracted inwards to block the self-closing section.

Description

Self-closing structure of casing puncture outfit in vitreous body cutting operation

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a self-closing structure of casing puncture ware in vitreous cutting operation is related to.

Background

In vitrectomy procedures, the associated puncture instrument comprises a microcatheter system: three puncture cannulas (using a sclera puncture knife for puncture introduction), an infusion tube, three sclera plugs, sclera plug forceps and the like.

During operation, the sclera puncture knife with the sleeve is used for directly puncturing the bulbar conjunctiva and the scleral tissues to enter the vitreous body cavity, three channels required by the operation are established, the disposable sleeve is directly inserted into the channels without suture fixation, puncture ports of the conjunctiva and the sclera are kept on the same straight line, and the perfusion tube and operation instruments enter and exit the eyeball through the sleeve so as to avoid the damage to the tissues caused by repeated entering and exiting of the instruments.

When a surgical instrument in the current vitreous cutting puncture system enters or exits an eyeball, a sleeve has no self-closing function, so that liquid or gas in the eye is easily lost, the pressure in the eye is unbalanced, and the eye is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a self-closing structure of casing puncture ware in vitreous cutting operation to solve the passageway that exists among the prior art and establish with the sleeve pipe and do not have the self-closing function, make the technical problem of intraocular liquid or gas loss easily. The utility model provides a plurality of technological effects that preferred technical scheme among a great deal of technical scheme can produce are seen in the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a self-closing structure of a casing puncture outfit in a vitreous body cutting operation, which comprises a self-closing valve and a puncture needle, wherein the puncture needle can extend into the self-closing valve and the self-closing valve can be pushed by the puncture needle to be inserted into a vitreous body cavity;

the self-closing valve comprises a self-closing section, the self-closing section is made of silica gel, and the self-closing section can be expanded outwards under the action of the puncture system so as to conduct the self-closing section; when the puncture system is pulled out of the self-closing section, the self-closing section can be retracted inwards to block the self-closing section.

Optionally, the self-closing valve is of an integrally formed structure.

Optionally, the self-closing valve comprises a connecting section and an anti-slip section, one end of the connecting section is fixedly connected with one end of the anti-slip section, the other end of the anti-slip section is fixedly connected with one end of the self-closing section, and the connecting section, the anti-slip section and the self-closing section are communicated with each other.

Optionally, the self-closing section comprises two deformation sheets, one end of each of the two deformation sheets is fixedly connected with the end of the anti-slip section, the side walls of the two deformation sheets are fixedly connected, and when the puncture system extends into the self-closing section, the inner walls of the two deformation sheets can be separated; when the puncture system is pulled out of the self-closing section, the inner walls of the two deformation sheets can be automatically attached.

Optionally, the connecting section is of a funnel-type structure.

Optionally, a fluorescent material is added in the connecting segment.

Optionally, the non-slip segment is of a cylindrical structure.

Optionally, the outer wall of the anti-slip section is provided with anti-slip lines.

Optionally, a plurality of liquid outlet holes are arranged on the self-closing section.

Optionally, the puncture needle comprises a needle head and a handheld rod, the needle head is connected with the end parts of the handheld rod, the needle head can extend into the self-closing valve, and the outer wall of the needle head can be attached to the inner wall of the self-closing valve;

the free end of the handheld rod is provided with three fixing bulges.

The utility model provides a self-closing structure of a casing puncture outfit in a vitreous body cutting operation, when the self-closing valve is put into the vitreous body cavity, the self-closing valve can be inserted into the vitreous body cavity only by the puncture needle, namely, the puncture needle is firstly inserted into the self-closing valve, the outer wall of the puncture needle is attached to the inner wall of the self-closing valve, then the puncture needle is inserted into the vitreous body cavity, and simultaneously, the self-closing valve also enters the vitreous body cavity along with the puncture needle; after the installation is accomplished, need pull out the pjncture needle, only need stay the self-closing valve in the vitreous chamber, form a passageway that makes things convenient for surgical instruments business turn over eyeball, the self-closing section on the self-closing valve is owing to adopt the silica gel material, can automatic internal contraction for the self-closing section can be automatic block, thereby avoids the liquid or the gaseous outflow of vitreous intracavity, when surgical instruments inserts in the self-closing valve, will make the self-closing section outwards expand, makes things convenient for surgical instruments business turn over self-closing valve, the utility model discloses a when surgical instruments extracts, the passageway in the self-closing valve will instantaneous shut off its, prevents that intraocular liquid or gas from losing, has solved the passageway that establishes with the sleeve pipe that exists among the prior art and has not had the self-closing function, makes intraocular liquid or gaseous technical problem that runs off easily.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a self-closing mechanism of a trocar for vitrectomy procedures in accordance with an embodiment of the present invention;

FIG. 2 is a side view of a self-closing mechanism of the trocar for vitrectomy procedures in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of a puncture needle of the cannula puncture device in the vitrectomy procedure according to the embodiment of the present invention;

FIG. 1, self-closing valve; 11. a self-closing section; 111. a deformable sheet; 112. a liquid outlet hole; 12. a connecting section; 13. an anti-slip section; 131. anti-skid lines;

2. puncturing needle; 21. a needle head; 22. a hand-held wand; 221. and fixing the projection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Moreover, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

Example 1:

the utility model provides a self-closing structure of a casing puncture outfit in a vitreous cutting operation, which comprises a self-closing valve 1 and a puncture needle 2, wherein the puncture needle 2 can extend into the self-closing valve 1, and the self-closing valve 1 can be pushed by the puncture needle 2 to be inserted into a vitreous cavity;

the self-closing valve 1 comprises a self-closing section 11, the self-closing section 11 is made of silica gel, and the self-closing section 11 can be expanded outwards under the action of the puncture system so as to conduct the self-closing section 11; when the puncture system is pulled out of the self-closing section 11, the self-closing section 11 can be retracted inwards to block the self-closing section 11. The utility model provides a self-closing structure of a casing puncture outfit in a vitreous body cutting operation, when putting the self-closing valve 1 into the vitreous body cavity, the self-closing valve 1 can be inserted into the vitreous body cavity only by the puncture needle 2, namely, the puncture needle 2 is firstly stretched into the self-closing valve 1, the outer wall of the puncture needle 2 is jointed with the inner wall of the self-closing valve 1, then the puncture needle 2 is inserted into the vitreous body cavity, and simultaneously the self-closing valve 1 also enters the vitreous body cavity along with the puncture needle 2; after the installation is finished, the puncture needle 2 needs to be pulled out, and only the self-closing valve 1 needs to be left in the vitreous cavity to form a channel which is convenient for a surgical instrument to enter and exit the eyeball, the self-closing section 11 on the self-closing valve 1 can automatically contract inwards due to the adoption of a silica gel material, so that the self-closing section 11 can be automatically closed, liquid or gas in the vitreous cavity is prevented from flowing outwards, when the surgical instrument is inserted into the self-closing valve 1, the self-closing section 11 can be expanded outwards, the surgical instrument can conveniently enter and exit the self-closing valve 1, the utility model discloses a when the surgical instrument is pulled out, the self-closing valve 1 can instantly close the channel in the self-closing valve, the liquid or gas in the eye is prevented from being lost, and the technical problems that the channel established by a sleeve in the prior art has no self-closing function and the liquid or gas in the eye is easy to be lost are solved.

Example 2:

as an alternative embodiment, the self-closing valve 1 may be an integrally formed structure, the self-closing valve 1 includes a connecting section 12 and an anti-slip section 13, one end of the connecting section 12 is fixedly connected with one end of the anti-slip section 13, the other end of the anti-slip section 13 is fixedly connected with one end of the self-closing section 11, and the connecting section 12, the anti-slip section 13 and the self-closing section 11 are communicated with each other. The length of the self-closing section 11 may be 2mm, and the length of the anti-slip section 13 may be 2mm.

Example 3:

as an alternative embodiment, the self-closing section 11 includes two deformation sheets 111, one end of each of the two deformation sheets 111 is fixedly connected to the end of the anti-slip section 13, the side walls of the two deformation sheets 111 are fixedly connected, and the joint of the two deformation sheets 111 does not deform and is parallel to the anti-slip section 13, when the puncture system extends into the self-closing section 11, the inner walls of the two deformation sheets 111 can be separated, at this time, the channel from the inside of the self-closing section 11 is conducted, which can facilitate the passing of surgical instruments into and out of the self-closing valve 1; when the puncture system is pulled out of the self-closing section 11, the inner walls of the two deformation sheets 111 can be automatically attached, and at the moment, the two deformation sheets 111 block a channel in the self-closing section 11, so that the intraocular liquid can be prevented from flowing out of the self-closing valve 1. The two deformation sheets 111 can be separated by the force when the liquid and the gas enter, and the self-closing section 11 has strong toughness in the longitudinal direction, is not easy to deform, is soft in the transverse direction and has certain elasticity.

As an alternative embodiment, the connecting section 12 may be a funnel-shaped structure, the shape of which may be more advantageous for the entry of surgical instruments.

As an optional embodiment, a fluorescent material is added in the connecting section 12, so that the connecting section can be clearly seen in a dark light environment, and an operator can accurately find the self-closing valve 1 in the dark light environment.

As an alternative embodiment, the anti-slip segment 13 may be a rigid cylindrical structure, and the anti-slip segment 13 will not bend, so as to avoid the position of the self-closing valve 1 when penetrating into the vitreous cavity from being affected.

As an alternative embodiment, the outer wall of the anti-slip section 13 is provided with anti-slip threads 131, the anti-slip threads 131 may be reverse threads, and are barb-shaped, so that the anti-slip threads 131 are easy to enter and difficult to exit, and the anti-slip threads 131 can prevent the self-closing valve 1 from slipping off during the operation. When the puncture needle 2 and the self-closing valve 1 are inserted into the vitreous cavity, the anti-skid veins 131 can not obstruct the self-closing valve 1 from extending into the vitreous cavity, but when the puncture needle 2 is pulled out, the anti-skid veins 131 can obstruct the self-closing valve 1 from slipping, thus avoiding the self-closing valve 1 from being pulled out along with the puncture needle 2.

Example 4:

as an alternative embodiment, the self-closing segment 11 is provided with a plurality of liquid outlet holes 112. In a vitreous body cutting operation system, at least two self-closing valves 1 are needed, wherein one self-closing valve 1 needs to be provided with a plurality of liquid outlet holes 112 on a self-closing section 11 as a channel for perfusion liquid, and the perfusion liquid flows into an eyeball from the liquid outlet holes 112 by being connected with a perfusion tube, and the damage of perfusion pressure to a retina can be reduced by arranging the plurality of liquid outlet holes 112; while other self-closing valves 1 do not need to be provided with outlet openings 112.

Example 5:

as an alternative embodiment, the puncture needle 2 comprises a needle head 21 and a handheld rod 22, the needle head 21 and the handheld rod 22 are connected at the ends, the needle head 21 can extend into the self-closing valve 1, and the outer wall of the needle head 21 can be attached to the inner wall of the self-closing valve 1; when the self-closing valve 1 is installed in a vitreous cavity, the needle head 21 is firstly inserted into the self-closing valve 1, then an operator holds the hand-held rod 22 to insert into the vitreous cavity, when the self-closing valve 1 is inserted to a proper position, the puncture needle 2 is extracted, and the self-closing valve 1 is embedded on the wall of a sphere.

The free end of the hand-held rod 22 is provided with three fixing protrusions 221, and the distance between the three fixing protrusions 221 is fixed for measuring the distance conveniently. The intervals between the three fixing protrusions 221 are 3.5mm and 0.5mm from left to right, respectively.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The self-closing structure of the casing puncture outfit in the vitreous cutting operation is characterized by comprising a self-closing valve (1) and a puncture needle (2), wherein,

the puncture needle (2) can extend into the self-closing valve (1) and the self-closing valve (1) can be inserted into a vitreous cavity under the pushing of the puncture needle (2);

the self-closing valve (1) comprises a self-closing section (11), the self-closing section (11) is made of silica gel, and the self-closing section (11) can be expanded outwards under the action of a puncture system to conduct the self-closing section (11); when the puncture system is pulled out of the self-closing section (11), the self-closing section (11) can be retracted inwards to block the self-closing section (11).

2. The self-closing structure of a trocar for vitrectomy surgery according to claim 1, wherein the self-closing valve (1) is an integrally formed structure.

3. The self-closing structure of a trocar for vitrectomy surgery according to claim 1, wherein the self-closing valve (1) comprises a connecting section (12) and an anti-slip section (13), one end of the connecting section (12) is fixedly connected with one end of the anti-slip section (13), the other end of the anti-slip section (13) is fixedly connected with one end of the self-closing section (11), and the connecting section (12), the anti-slip section (13) and the self-closing section (11) are communicated with each other.

4. The self-closing structure of a trocar for vitreous cutting surgery according to claim 3, characterized in that said self-closing section (11) comprises two deformation sheets (111), one end of each of said two deformation sheets (111) is fixedly connected with the end of said anti-slip section (13), the side walls of said two deformation sheets (111) are fixedly connected, and the inner walls of said two deformation sheets (111) can be separated when said puncture system is inserted into said self-closing section (11); when the puncture system is pulled out of the self-closing section (11), the inner walls of the two deformation sheets (111) can be automatically attached.

5. The self-closing structure of a trocar for vitrectomy surgery according to claim 3, wherein the connecting section (12) has a funnel-shaped configuration.

6. The self-closing structure of a trocar in vitrectomy surgery according to claim 3, wherein the connecting section (12) is added with a fluorescent material.

7. The self-closing structure of a trocar for use in vitrectomy surgery according to claim 3, wherein the anti-slip section (13) is a cylindrical structure.

8. The self-closing structure of a trocar for vitreous cutting operation according to claim 3, wherein the outer wall of said non-slip section (13) is provided with non-slip lines (131).

9. The self-closing structure of a trocar for vitrectomy surgery according to claim 1, wherein the self-closing section (11) is provided with a plurality of liquid outlet holes (112).

10. The self-closing structure of a casing puncture outfit in vitreous cutting operation according to claim 1, characterized in that the puncture needle (2) comprises a needle head (21) and a hand-held rod (22), the needle head (21) is connected with the end of the hand-held rod (22), the needle head (21) can extend into the self-closing valve (1) and the outer wall of the needle head (21) can be jointed with the inner wall of the self-closing valve (1);

the free end of the hand-held rod (22) is provided with three fixing bulges (221).