CN213941724U

CN213941724U - Implanted anti-reflux drug delivery device

Info

Publication number: CN213941724U
Application number: CN202022620723.5U
Authority: CN
Inventors: 夏圣恩
Original assignee: Jingmeide Shenzhen Medical Technology Co ltd
Current assignee: Jingmeide Shenzhen Medical Technology Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-08-13
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses an implanted anti-reflux drug delivery device, which comprises a hollow bottom, a shell with a circular opening at the upper end, a stainless steel ring fixedly arranged at the opening of the shell and embedded with a puncture membrane, a contraction cavity concavely arranged at one side of the bottom of the shell, one end of a spring fixedly arranged on the inner wall at one side of the contraction cavity, a flexible membrane fixedly connected with the other end of the spring through a fixed soft board, and a flexible membrane fixedly arranged on the inner cavity wall of the shell; the upper end activity of casing is equipped with the inoxidizing coating, and protective layer internal fixed mounting has the magnetic ring, and the top fixed mounting of inoxidizing coating has medical rubberized fabric layer, and the center department fixed mounting on medical rubberized fabric layer has the reference column, and the bottom fixed mounting of reference column arcwall face has the bearing, and the top fixed mounting of bearing has solid fixed ring, and solid fixed ring fixed mounting is in medical rubberized fabric layer, and the top activity overcoat of reference column has the top cap.

Description

Implanted anti-reflux drug delivery device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an implanted anti-reflux drug delivery device.

Background

The drug delivery device is a closed infusion device that is fully implanted in the human body and provides a long term venous blood channel for the patient. However, when the puncture needle is pulled out from the existing transfusion port, negative pressure can occur in the cavity of the transfusion port shell, and blood can flow back into the transfusion port, so that the harm to patients is caused; since the device is implanted into the body, it is important to find the puncture mechanism at a later time of administration.

The utility model discloses a chinese utility model with application number 201920310507.5 prevents infusion port against current, including the casing that the hollow has a bottom, the outside extension in casing side has the cylinder that has hollow structure, the hollow cavity of cylinder and the inner chamber intercommunication of casing, the casing upper end is inlayed and is equipped with the puncture colloid that makes its upper end sealed, is provided with the elasticity valve in the casing inner chamber, one section that cylinder cavity is close to the casing inner chamber is the hollow interior section, the one end of elasticity valve is inlayed and is adorned in the hollow interior section, and the pit has all been seted up along cylinder axial both ends to the elasticity valve, and the elasticity valve middle part has the crack along cylinder axial cutting.

The utility model discloses a prevent against the current through setting up the elasticity valve, but in the in-service use process, after extracting the pjncture needle, because of the volume of casing inner chamber is great, the medicine of casing inner chamber is in the state that does not have external pressure, thereby can be blockked more siltation at the casing inner chamber by the elasticity valve, because the medicine capacity of siltation is more and then can influence the treatment of medicine, this utility model does not also set up the puncture position alignment structure of puncture colloid simultaneously, find the puncture position for the later stage and bring great inconvenience, for this reason we propose an implanted prevent against the current device of dosing and be used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an implanted prevents dosing unit against current to solve the problem that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an implanted anti-reflux drug delivery device comprises a hollow shell with a bottom and a circular opening at the upper end, wherein a stainless steel ring is fixedly installed at the opening of the shell, a puncture membrane is embedded in the stainless steel ring, a contraction cavity is concavely arranged on one side of the bottom of the shell, one end of a spring is fixedly installed on the inner wall of one side of the contraction cavity, the other end of the spring is fixedly connected with a telescopic membrane through a fixed soft plate, and the telescopic membrane is fixedly installed on the inner cavity wall of the shell;

the utility model discloses a medical adhesive tape layer, including casing, fixed mounting has the inoxidizing coating, the top fixed mounting of inoxidizing coating has medical rubberized fabric layer, the center department fixed mounting on medical rubberized fabric layer has the reference column, the bottom fixed mounting of reference column arcwall face has the bearing, the top fixed mounting of bearing has solid fixed ring, gu fixed ring fixed mounting is in medical rubberized fabric layer, the top activity overcoat of reference column has the top cap.

Preferably, a sealing ring is fixedly installed in the top cover, and the sealing ring is made of rubber and can flexibly stretch and retract.

Preferably, the medical rubberized fabric layer is of a structure with a round upper part and a flat lower part, and the area of the cross section is larger than that of the protective layer.

Preferably, the puncture membrane is divided into an upper puncture membrane, a middle puncture membrane and a lower puncture membrane, the upper puncture membrane is of an upper arch and a lower arch structure, and the middle puncture membrane and the lower puncture membrane are both of an upper concave and a lower convex structure.

Preferably, the deformation degree of the upper puncture membrane, the middle puncture membrane and the lower puncture membrane is reduced in sequence when the puncture needle is pulled out.

Preferably, the elastic force of the spring is smaller than the pressure when the liquid is injected and larger than the conduction critical value of a crack on the elastic valve, and the telescopic membrane completely covers the opening of the contraction cavity and can be contracted into the contraction cavity.

Preferably, the diameter of the magnetic ring is equal to that of the stainless steel ring, and the axis of the fixing ring is superposed with the axis of the magnetic ring and provided with a circular through hole in a penetrating manner.

Compared with the prior art, the beneficial effects of the utility model are that: the magnetic ring on the protective layer and the stainless steel ring on the drug delivery device are in magnetic attraction fit to form a positioning device, so that the drug delivery by puncture at the later stage is facilitated, the repeated searching of the position of the puncture membrane is avoided, and the comfort level of a patient is improved; different structural layers of the puncture membrane can generate different deformation when the puncture needle is pulled out, the deformation of the upper puncture membrane is larger, the pressure generated by the deformation is transmitted to the lower puncture membrane once, and then the liquid medicine in the inner cavity of the shell still has certain pressure to enter the body after the puncture needle is pulled out, and simultaneously the flexible membrane is matched to ensure that the volume of the liquid medicine deposited in the inner cavity of the shell is reduced to the minimum, and the elastic valve prevents the backflow of the blood of the human body.

Drawings

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

In the figure: the puncture device comprises a shell 1, a puncture membrane 2, an upper puncture membrane 21, a middle puncture membrane 22, a lower puncture membrane 23, a contraction cavity 3, a spring 4, a telescopic membrane 5, a stainless steel ring 6, a magnetic ring 7, a medical rubberized fabric layer 8, a protective layer 9, a fixing ring 10, a bearing 11, a top cover 12, a sealing ring 13 and a positioning column 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an implanted anti-reflux drug delivery device comprises a hollow bottom, a shell 1 with a circular opening is arranged at the upper end of the hollow bottom, a stainless steel ring 6 is fixedly arranged at the opening of the shell 1, a puncture membrane 2 is embedded in the stainless steel ring, a contraction cavity 3 is concavely arranged on one side of the bottom of the shell 1, one end of a spring 4 is fixedly arranged on the inner wall of one side of the contraction cavity 3, the other end of the spring 4 is fixedly connected with a telescopic membrane 5 through a fixed soft plate, and the telescopic membrane 5 is fixedly arranged on the inner cavity wall of the shell 1;

as shown in fig. 1, a protective layer 9 is movably arranged at the upper end of a casing 1, a magnetic ring 7 is fixedly arranged in the protective layer 9, a medical rubberized fabric layer 8 is fixedly arranged at the top of the protective layer 9, a positioning column 14 is fixedly arranged at the center of the medical rubberized fabric layer 8, a bearing 11 is fixedly arranged at the bottom of an arc-shaped surface of the positioning column 14, a fixing ring 10 is fixedly arranged at the top of the bearing 11, the fixing ring 10 is fixedly arranged in the medical rubberized fabric layer 8, and a top cover 12 is movably sleeved outside the top of the positioning column 14.

As shown in fig. 1, a seal ring 13 is fixedly installed in the top cover 12, and the seal ring 13 is made of rubber and can flexibly expand and contract. The medical rubberized fabric layer 8 is of a structure with a round upper part and a flat lower part, and the area of the cross section is larger than that of the protective layer 9. The puncture membrane 2 is divided into three-layer structures of an upper puncture membrane 21, a middle puncture membrane 22 and a lower puncture membrane 23, the upper puncture membrane 21 is of an upper arch and a lower arch, and the middle puncture membrane 22 and the lower puncture membrane 23 are both of an upper concave and a lower convex structure. The upper puncture membrane 21, the middle puncture membrane 22, and the lower puncture membrane 23 are deformed to a smaller extent in order when the puncture needle is pulled out. The elastic force of the spring 4 is smaller than the pressure when the liquid is injected and larger than the conduction critical value of the crack on the elastic valve, and the telescopic membrane 5 completely covers the opening of the contraction cavity 3 and can be contracted into the contraction cavity 3. The diameter of the magnetic ring 7 is equal to that of the stainless steel ring 6, and the axis of the fixing ring 10 is superposed with that of the magnetic ring 7 and provided with a circular through hole in a penetrating manner.

The working principle is as follows: after the drug delivery device is implanted into a human body, when the drug delivery device needs to be punctured, a medical adhesive tape layer 8 with a protective layer 9 is taken out, a stainless steel ring 6 is adsorbed by a magnetic ring 7 in the protective layer 9, the repeated touch confirmation of the position of a puncture membrane by medical staff is avoided through the adsorption of magnetic force, the comfort level of a patient is increased, the position is not easy to move due to the fact that the medical adhesive tape layer 8 is adhered to the surface of the skin of the human body, the medical staff pulls out a top cover 12 to expose a positioning column 14, the puncture needle is injected into the drug delivery device through a through hole of the positioning column 14, a puncture needle head penetrates through the puncture membrane 2 to inject liquid medicine, when the liquid medicine is injected into an inner cavity of a shell 1, the telescopic membrane 5 is squeezed into a telescopic cavity 3 under the action of pressure, the puncture needle is pulled out after the drug delivery is completed, the three-layer structure of the puncture membrane 2 is sequentially subjected to different deformations, the deformation degree of deformation is the maximum of an upper puncture membrane 21, the pressure generated by the deformation is sequentially transmitted to a lower puncture membrane 23, the lower puncture membrane 23 is deformed by downward pressure, the telescopic membrane 5 extends out under the action of the elasticity of the spring 4, and the liquid medicine in the inner cavity of the shell 1 still has certain pressure to flow into the human body after the puncture needle is pulled out, so that the volume of the liquid medicine in the inner cavity of the shell 1 is minimized, and meanwhile, the elastic valve prevents the backflow of the blood of the human body.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an implanted prevents dosing unit against current, has the end including hollow, and the upper end is equipped with circular open-ended casing (1), its characterized in that: a stainless steel ring (6) is fixedly installed at an opening of the shell (1) and a puncture membrane (2) is embedded in the opening, a contraction cavity (3) is concavely arranged on one side of the bottom of the shell (1), one end of a spring (4) is fixedly installed on the inner wall of one side of the contraction cavity (3), the other end of the spring (4) is fixedly connected with a telescopic membrane (5) through a fixed soft plate, and the telescopic membrane (5) is fixedly installed on the inner cavity wall of the shell (1);

the utility model discloses a medical adhesive tape, including casing (1), top fixed mounting, protection layer (9), top fixed mounting have medical rubberized fabric layer (8), the center of medical rubberized fabric layer (8) is located fixed mounting and is had reference column (14), the bottom fixed mounting of reference column (14) arcwall face has bearing (11), the top fixed mounting of bearing (11) has solid fixed ring (10), gu fixed ring (10) fixed mounting is in medical rubberized fabric layer (8), the top activity overcoat of reference column (14) has top cap (12).

2. The implantable anti-reflux drug delivery device of claim 1, wherein: the inner fixed mounting of the top cover (12) is provided with a sealing ring (13), and the sealing ring (13) is made of rubber and can flexibly stretch out and draw back.

3. The implantable anti-reflux drug delivery device of claim 1, wherein: the medical rubberized fabric layer (8) is of a structure with an upper circle and a lower plane, and the area of the cross section of the medical rubberized fabric layer is larger than that of the protective layer (9).

4. The implantable anti-reflux drug delivery device of claim 1, wherein: the puncture membrane (2) is divided into an upper puncture membrane (21), a middle puncture membrane (22) and a lower puncture membrane (23) which are of three-layer structures, the upper puncture membrane (21) is of an upper arch and a lower arch structure, and the middle puncture membrane (22) and the lower puncture membrane (23) are of upper concave and lower convex structures.

5. The implantable anti-reflux drug delivery device according to claim 4, wherein: the deformation degree of the upper puncture membrane (21), the middle puncture membrane (22) and the lower puncture membrane (23) is reduced in sequence when the puncture needle is pulled out.

6. The implantable anti-reflux drug delivery device of claim 1, wherein: the elastic force of the spring (4) is smaller than the pressure when liquid is injected and larger than the conduction critical value of a crack on the elastic valve, and the telescopic membrane (5) completely covers the opening of the contraction cavity (3) and can be contracted into the contraction cavity (3).

7. The implantable anti-reflux drug delivery device of claim 1, wherein: the diameter of the magnetic ring (7) is equal to that of the stainless steel ring (6), and the axis of the fixing ring (10) is superposed with the axis of the magnetic ring (7) and provided with a circular through hole in a penetrating manner.