CN113975521A

CN113975521A - Novel implanted drug delivery device

Info

Publication number: CN113975521A
Application number: CN202111323772.5A
Authority: CN
Inventors: 戴华英; 李健; 张昆; 回广雷
Original assignee: Tianjin Dimak Pharmaceutical Technology Co ltd
Current assignee: Tianjin Dimak Pharmaceutical Technology Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-01-28

Abstract

The invention relates to the technical field of implantable therapeutic infusion instruments, in particular to a novel implantable drug delivery device which has stable use effect and overall structure and better use reliability, and comprises a guide tube, a harbor body base and a harbor body upper cover, wherein the harbor body base and the harbor body upper cover are in sliding fit, the harbor body upper cover is provided with an operation port, a through cavity is arranged in the operation port, an upper cavity cover is arranged in the through cavity, a lower cavity seat is arranged in the upper cavity cover, an injection piece is arranged between the lower cavity seat and the upper cavity cover, the upper end and the lower end of the injection piece are respectively mutually butted with the upper cavity cover and the lower cavity seat, the harbor body base is connected with a limit ring, the lower cavity seat is arranged in the limit ring, a sleeve is communicated with the lower cavity seat and is matched with a connecting tube, the connecting tube is connected with a gradual change tube, the harbor body upper cover is provided with a gradual change groove, the sleeve is arranged in the gradual change groove, the harbor body base is connected with a gradual change pressure tube, the guide tube cover is established on the connecting pipe, is provided with the pipe lock on the guide tube, is provided with the lag on the pipe lock.

Description

Novel implanted drug delivery device

Technical Field

The invention relates to the technical field of implantable therapeutic infusion apparatuses, in particular to a novel implantable drug delivery device.

Background

As is well known, with the increasing medical level of human beings, more and more difficult diseases are diagnosed and treated, and when patients need to be infused for a long time due to the particularity of the diseases, an implanted drug delivery device structure is usually used for relieving the pain of the patients.

The existing implanted drug delivery device structure generally comprises a port body and a guide tube, wherein the port body is communicated with the guide tube, an injection piece is arranged in the port body, the port body and the guide tube are both made of flexible materials, when the device is used, the guide tube is arranged in a vein of a human body through subcutaneous puncture by utilizing an operation method, the rest guide tube and the port body are buried in subcutaneous tissues, a circular bulge can be touched only on the body surface of a patient, the circular bulge is positioned from the position during treatment, a nondestructive needle is perpendicularly punctured into the port body through the skin, the device can be used for infusing various drugs, supplementing liquid, nutrition support treatment, blood transfusion, blood sample collection and the like, a reliable vein channel is provided for the patient needing long-term infusion treatment, and the device can also be used for blood sample collection.

However, the harbor body in the above-mentioned implanted drug delivery device structure is made of flexible material, so after being implanted into subcutaneous tissue, the muscle activity at the implanted part is dragged by the movement of the patient, which easily causes the extrusion deformation of the internal cavity of the harbor body, and affects the use effect.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a novel implantable drug delivery device, wherein the cavity volume formed by matching an upper cavity cover and a lower cavity base is stable and not easy to deform, the using effect is stable, the structure is stable, and the using reliability is good.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a novel implantable drug delivery device comprises a guide tube, a harbor body base and a harbor body upper cover, wherein the harbor body base is in sliding fit with the harbor body upper cover, an operation opening is formed in the harbor body upper cover, a through cavity is formed in the operation opening, an upper cavity cover is arranged in the through cavity, a lower cavity seat is arranged in the upper cavity cover, an injection piece is arranged between the lower cavity seat and the upper cavity cover, the injection piece is made of soft materials and penetrates through the operation opening, the top of the injection piece is streamline, the upper end and the lower end of the injection piece are respectively abutted against the upper cavity cover and the lower cavity seat, a limiting ring is fixedly connected onto the harbor body base, the lower cavity seat is arranged in the limiting ring, a sleeve is communicated onto the lower cavity seat, a connecting pipe is in interference fit in the sleeve, a gradual-changing pipe is fixedly connected onto the connecting pipe, a gradual-changing groove is formed in the harbor body upper cover, and the gradual-changing pipe is arranged in the gradual-changing groove, the port body base is fixedly connected with a gradual change pressing pipe used for pressing the gradual change pipe, the guide pipe sleeve is arranged on the connecting pipe, a pipe lock is arranged on the guide pipe, and a protective sleeve is arranged on the pipe lock.

On the basis of the above scheme, a plurality of annular grooves are formed in the catheter lock, a plurality of protruding rings are arranged in the protective sleeve, and the plurality of protruding rings are respectively arranged in the plurality of annular grooves.

On the basis of the above scheme, the upper part of the outer periphery of the upper cover of the harbor body is a sewing part, the sewing part is of a curved surface structure, and the lower part of the outer periphery of the upper cover of the harbor body is a holding part and a cylindrical surface structure of the holding part.

In a further aspect of the present invention, the suture portion is provided with a plurality of suture holes for subcutaneous suture.

As a further aspect of the above solution, the upper chamber cover and the lower chamber base may be formed by machining, punch forming or metallurgical injection molding, and both the upper chamber cover and the lower chamber base are made of stainless steel or titanium alloy.

As a further improvement of the above scheme, the harbor body base and the harbor body upper cover are both made of plastic materials and are integrally injection molded.

As a further scheme of the scheme, ultrasonic welding is adopted between the harbor body base and the harbor body upper cover.

(III) advantageous effects

Compared with the prior art, the invention provides a novel implantable drug delivery device, which has the following beneficial effects:

1. this novel implanted device of dosing through the cooperation of upper chamber lid and lower chamber seat, is convenient for form the support to the cavity that the cooperation formed between harbor body base and the harbor body upper cover, and cavity non-deformable, the result of use is comparatively stable.

2. This novel implanted device of dosing through the gradual change pipe and the gradual change cooperation that compresses tightly the pipe, is convenient for be connected between connecting pipe and the sleeve pipe, through the cooperation of pipe lock with the connecting pipe, can compress tightly the guiding tube for the connecting pipe, makes being connected between guiding tube and the connecting pipe comparatively reliable and stable, and this novel implanted device of dosing's functional structure is comparatively stable.

Drawings

FIG. 1 is a schematic top perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is a schematic bottom perspective view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B according to the present invention;

FIG. 5 is a schematic perspective view of the present invention;

fig. 6 is a schematic cross-sectional perspective view of the protective cover and the projecting ring of the present invention.

In the figure: 1. a guide tube; 2. a harbor body base; 3. covering the harbor body; 5. an upper chamber cover; 6. a lower cavity seat; 7. an injection member; 8. a limiting ring; 9. a sleeve; 10. a connecting pipe; 11. a transition tube; 12. gradually transforming and tightening the tube; 13. a catheter lock; 14. a protective sleeve; 16. an annular groove; 17. a projecting ring; 18. a suture site; 19. pinching the part; 20. and (6) sewing the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

Examples

Referring to fig. 1-6, a novel implantable drug delivery device comprises a guiding tube 1, a harbor body base 2 and a harbor body upper cover 3, wherein the upper portion of the outer periphery of the harbor body upper cover 3 is a suturing portion 18, the suturing portion 18 is a curved surface structure, the suturing portion 18 is provided with a plurality of suturing holes 20 for suturing under the skin, which facilitates suturing in the body of a patient, the lower portion of the outer periphery of the harbor body upper cover 3 is a holding portion 19, the holding portion 19 has a cylindrical surface structure, which facilitates the holding of the harbor body upper cover 3, and has good practicability, the harbor body base 2 and the harbor body upper cover 3 are in sliding fit, the harbor body base 2 and the harbor body upper cover 3 are both integrally injection-molded by plastic materials, the harbor body base 2 and the harbor body upper cover 3 are welded by ultrasonic, which improves the connection reliability between the harbor body upper cover 3 and the harbor body base 2, the harbor body upper cover 3 is provided with an operation opening, the operation opening is provided with a through cavity, the inner cavity penetrating cavity is provided with an upper cavity cover 5, the upper cavity cover 5 is internally provided with a lower cavity seat 6, through the matching of the upper cavity cover 5 and the lower cavity seat 6, the support of a cavity formed by matching between the harbor body base 2 and the harbor body upper cover 3 is convenient to form, the cavity is not easy to deform, the using effect is stable, the upper cavity cover 5 and the lower cavity seat 6 can be machined, punched or metallurgically injection-molded, the upper cavity cover 5 and the lower cavity seat 6 are both made of stainless steel or titanium alloy, the structural strength of the upper cavity cover 5 and the lower cavity seat 6 is improved, the service life is prolonged, and the rejection with a human body is low.

It should be further noted that an injection member 7 is arranged between the lower cavity base 6 and the upper cavity cover 5, the injection member 7 is made of soft material, the injection member 7 passes through the operation opening, the top of the injection member 7 is streamlined, the upper end and the lower end of the injection member 7 are respectively abutted against the upper cavity cover 5 and the lower cavity base 6, a limit ring 8 is fixedly connected to the port body base 2, the lower cavity base 6 is arranged in the limit ring 8, a sleeve 9 is communicated with the lower cavity base 6, a connecting pipe 10 is in interference fit in the sleeve 9, a transition pipe 11 is fixedly connected to the connecting pipe 10, a transition groove is formed in the port body upper cover 3, the transition pipe 11 is arranged in the transition groove, a compression transition pipe 12 for compressing the transition pipe 11 is fixedly connected to the port body base 2, the connection between the connecting pipe 10 and the sleeve 9 is facilitated through the cooperation of the transition pipe 11 and the transition compression pipe 12, the guide pipe 1 is sleeved on the connecting pipe 10, be provided with pipe lock 13 on the guide tube 1, through the cooperation of pipe lock 13 and connecting pipe 10, can compress tightly guide tube 1 for connecting pipe 10, make being connected between guide tube 1 and the connecting pipe 10 comparatively reliable and stable, this novel implanted device of dosing's functional structure is comparatively stable, be provided with lag 14 on the pipe lock 13, a plurality of ring channels 16 have been seted up on the pipe lock 13, be provided with a plurality of bulge loops 17 in the lag 14, a plurality of bulge loops 17 set up respectively in a plurality of ring channels 16, improve the connection reliability of protection on pipe lock 13, positional stability is better.

To sum up, the working principle and the working process of the novel implantable drug delivery device are that, when in use, the novel implantable drug delivery device is firstly implanted into the body of a patient in an operation mode, the guide tube 1 is implanted into a venous blood vessel, after the implantation is completed, the non-invasive needle is inserted into a cavity formed by the cooperation of the upper cavity cover 5 and the lower cavity seat 6 through the special non-invasive needle, and various drugs, fluid infusion or nutrient solution are infused into the cavity through the special non-invasive needle, so that the infusion of various drugs, fluid infusion or nutrient solution into the body of the patient is realized.

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. A novel implantable drug delivery device comprises a guide tube (1), and is characterized in that: the plastic injection molding machine is characterized by further comprising a harbor body base (2) and a harbor body upper cover (3), wherein the harbor body base (2) and the harbor body upper cover (3) are in sliding fit, an operation opening is formed in the harbor body upper cover (3), a through cavity is formed in the operation opening, an upper cavity cover (5) is arranged in the through cavity, a lower cavity seat (6) is arranged in the upper cavity cover (5), an injection piece (7) is arranged between the lower cavity seat (6) and the upper cavity cover (5), the injection piece (7) is made of soft materials, the injection piece (7) penetrates through the operation opening, the top of the injection piece (7) is streamline, the upper end and the lower end of the injection piece (7) are respectively mutually abutted to the upper cavity cover (5) and the lower cavity seat (6), a limit ring (8) is fixedly connected to the harbor body base (2), the lower cavity seat (6) is arranged in the limit ring (8), and a sleeve (9) is communicated to the lower cavity seat (6), the pipe joint is characterized in that a connecting pipe (10) is arranged in the sleeve (9) in an interference fit mode, a gradual change pipe (11) is fixedly connected onto the connecting pipe (10), a gradual change groove is formed in the harbor body upper cover (3), the gradual change pipe (11) is arranged in the gradual change groove, a gradual change compression pipe (12) which is used for compressing the gradual change pipe (11) is fixedly connected onto the harbor body base (2), the guide pipe (1) is sleeved on the connecting pipe (10), a guide pipe lock (13) is arranged on the guide pipe (1), and a protective sleeve (14) is arranged on the guide pipe lock (13).

2. The novel implantable drug delivery device of claim 1, wherein: the catheter lock (13) is provided with a plurality of annular grooves (16), the protecting sleeve (14) is internally provided with a plurality of protruding rings (17), and the protruding rings (17) are respectively arranged in the annular grooves (16).

3. The novel implantable drug delivery device of claim 2, wherein: the harbour body upper cover is characterized in that the upper part of the periphery of the harbour body upper cover (3) is a sewing part (18), the sewing part (18) is of a curved surface structure, the lower part of the periphery of the harbour body upper cover (3) is a holding part (19), and the holding part (19) is of a cylindrical surface structure.

4. A novel implantable drug delivery device as claimed in claim 3, wherein: the suture part (18) is provided with a plurality of suture holes (20) for subcutaneous suture.

5. The novel implantable drug delivery device of claim 4, wherein: the upper cavity cover (5) and the lower cavity base (6) can be formed by machining, punch forming or metallurgical injection molding, and the upper cavity cover (5) and the lower cavity base (6) are both made of stainless steel or titanium alloy.

6. The novel implantable drug delivery device of claim 5, wherein: the harbor body base (2) and the harbor body upper cover (3) are made of plastic materials and are integrally injection molded.

7. The novel implantable drug delivery device of claim 6, wherein: the harbor body base (2) and the harbor body upper cover (3) are welded by ultrasonic.