CN215537317U

CN215537317U - Special needle of malleation implanted device of dosing

Info

Publication number: CN215537317U
Application number: CN202121449461.9U
Authority: CN
Inventors: 韦康桃; 麦朝朗; 郑海仪
Original assignee: Guangdong Baihe Medical Technology Co ltd
Current assignee: Guangdong Baihe Medical Technology Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-01-18
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a needle special for a positive pressure implanted drug delivery device, which comprises: the three-way joint is provided with a first liquid injection port, a second liquid injection port and a first liquid outlet, and a first heparin cap is arranged in the first liquid injection port; puncturing needle; one end of the first extension tube is connected with the puncture needle, and the other end of the first extension tube is connected with the first liquid outlet; the infusion device comprises an infusion shell, a first infusion port, a second infusion port and a second liquid outlet, wherein an infusion channel is arranged in the infusion shell, the infusion channel is provided with the first infusion port, the second infusion port and the second liquid outlet which are mutually communicated, a second heparin cap is arranged in the first infusion port, and an elastic sealing piece is arranged in the infusion shell and can enter or exit the second infusion port; the utility model can meet the requirement of simultaneously infusing a plurality of liquid medicines, and is provided with an infusion port with positive pressure, thereby preventing the situation that blood or liquid medicine flows backwards after an external infusion system is removed.

Description

Special needle of malleation implanted device of dosing

Technical Field

The utility model relates to a medical apparatus, in particular to a needle special for a positive pressure implanted drug delivery device.

Background

An implanted drug delivery device or a completely implanted infusion port is an infusion device which is left in a human body for a long time and generally comprises a subcutaneous implanted infusion port and a catheter, wherein a part of products are provided with independent connecting pieces. The infusion port and the connecting piece are implanted into the skin, the catheter can be implanted into the vein, the artery, the peritoneum or the vertebral canal and the like to establish a long-term liquid passage for a patient, the injection seat of the percutaneous repeated puncture port body can infuse medicine or suck body fluid into the human body, the existing needle special for the administration device uses a common infusion connector or a heparin cap connector which generates negative pressure, blood return is easy to occur after infusion is completed, the catheter is blocked, and the liquid medicine is easy to flush and is difficult to leave, so that the liquid medicine is remained.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a needle special for a positive pressure implantable drug delivery device, which solves one or more technical problems in the prior art and at least provides a beneficial choice or creation condition.

The solution of the utility model for solving the technical problem is as follows:

a needle dedicated to a positive pressure implantable drug delivery device, comprising: the three-way joint is provided with a first liquid injection port, a second liquid injection port and a first liquid outlet, and a first heparin cap is arranged in the first liquid injection port; puncturing needle; a first extension tube, one end of which is connected to the puncture needle and the other end of which is connected to the first liquid outlet; the infusion device comprises an infusion shell, an infusion channel is arranged in the infusion shell, a first infusion port, a second infusion port and a second liquid outlet are formed in the infusion shell, the infusion channel is communicated with the first infusion port, the second infusion port and the second liquid outlet, a second heparin cap is arranged in the first infusion port, an elastic sealing element is arranged in the infusion shell, and the elastic sealing element can enter or exit the second infusion port; and one end of the second extension pipe is connected to the second liquid outlet, and the other end of the second extension pipe is connected to the second liquid injection port.

The technical scheme at least has the following beneficial effects: the puncture needle, the three-way joint and the infusion shell are connected with each other by the first extension tube and the second extension tube, the puncture needle is used for puncturing the skin, the infusion or the blood can be infused into the first infusion port from the first heparin cap of the three-way joint, the infusion or the blood can be infused into the first infusion port from the second heparin cap of the infusion shell, the second infusion port with forward pressure is arranged in the infusion shell, when the infusion is infused into the second infusion port of the infusion shell, the injector can extrude the elastic sealing element into the infusion shell, so that the elastic sealing element exits from the second infusion port, the infusion is carried out through the second infusion port, after the injector exits from the infusion shell, the elastic sealing element enters the second infusion port again under the action of elastic force, so that the second infusion port is sealed, therefore, the utility model can meet the requirement of simultaneously infusing various liquid medicines and is provided with the infusion port with forward pressure, the situation that blood or liquid medicine flows backwards after the external infusion system is removed can be prevented.

As a further improvement of the above technical scheme, the infusion channel includes first infusion runner and second infusion runner, be provided with interior casing in the infusion casing, the lateral wall of interior casing with form between the inside wall of infusion casing first infusion runner, the outer diapire of interior casing with form between the inner diapire of infusion casing the second infusion runner, first infusion runner with second infusion runner communicates each other, first infusion mouth is located the lateral wall of infusion casing and communicate in first infusion runner, second infusion mouth is located the top of infusion casing and communicate in first infusion runner, the liquid outlet is located the bottom of infusion casing and communicate in second infusion runner, elastic sealing element is located in the interior casing. But the elastic sealing member is including the up-and-down motion of shell in, but the extension interior casing and get into second infusion mouth, for the second infusion mouth shutoff state this moment, when elastic sealing member withdrawed from second infusion mouth, the liquid medicine can follow the entering of second infusion mouth to first infusion runner, second infusion runner are passed through in proper order, then flow from the liquid outlet.

As a further improvement of the above technical solution, the elastic sealing member includes a spring and a sealing plug, one end of the spring is connected to the inner bottom wall of the inner housing, the other end of the spring is connected to the sealing plug, and the sealing plug can enter or exit the second infusion port. The sealing plug can enter or withdraw from the second transfusion port to close or open the second transfusion port, when the sealing plug is pressed inward by external force, the spring is compressed, and when the external force is removed, the spring recovers and drives the sealing plug to reset, so that the second transfusion port is plugged again.

As a further improvement of the technical scheme, the outer side wall of the sealing plug is provided with a mounting groove in a surrounding mode, and a sealing ring is sleeved in the mounting groove. The sealing ring can further improve the sealing performance of the sealing plug, and the sealing plug is not easy to separate when being installed in the installation groove.

As a further improvement of the above technical solution, a catheter clip is provided on the second extension tube. Can directly press from both sides the liquid medicine of breaking through the second extension pipe through the pipe clamp, can directly prevent to flow backwards first infusion mouth, second infusion mouth, use more nimble.

As a further improvement of the technical scheme, the puncture needle comprises a needle seat, a needle tube, a needle point and a wing panel, the needle tube is arranged on the needle seat, the needle point is connected to one end, far away from the needle seat, of the needle tube, one end of the first extension tube is connected to the needle seat and communicated with the needle tube, and the wing panel is arranged on the needle seat. The operator can exert force on the wing pieces to conveniently take up the whole needle base, and the needle tube is connected on the needle base and communicated with the first extension tube to complete puncture and transfusion through the needle point.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

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

fig. 2 is a schematic view of the internal structure of the infusion housing of the present invention.

In the drawings: 100-three-way joint, 110-first heparin cap, 200-puncture needle, 300-first extension tube, 400-infusion shell, 410-first infusion port, 420-second infusion port, 430-second liquid outlet, 440-second heparin cap, 450-inner shell, 461-spring, 462-sealing plug, 470-sealing ring, 500-second extension tube and 600-catheter clip.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1, a needle dedicated to a positive pressure implantable drug delivery device includes: the three-way joint 100 is provided with a first liquid injection port, a second liquid injection port and a first liquid outlet, and a first heparin cap 110 is arranged in the first liquid injection port; a puncture needle 200; a first extension tube 300 having one end connected to the puncture needle 200 and the other end connected to the first liquid outlet; the infusion device comprises an infusion shell 400, wherein an infusion channel is arranged in the infusion shell 400, a first infusion port 410, a second infusion port 420 and a second liquid outlet 430 which are communicated with each other are arranged on the infusion shell 400, a second heparin cap 440 is arranged in the first infusion port 410, an elastic sealing element is arranged in the infusion shell 400, and the elastic sealing element can enter or exit the second infusion port 420; and a second extension pipe 500 having one end connected to the second liquid outlet 430 and the other end connected to the second liquid inlet.

From the above, the puncture needle 200, the three-way joint 100 and the infusion housing 400 are connected to each other by the first extension tube 300 and the second extension tube 500, the puncture needle 200 is used for puncturing the skin, and can transfuse or draw blood from the first heparin cap 110 of the three-way joint 100 to the first infusion port, or transfuse or draw blood from the second heparin cap 440 of the infusion housing 400 to the first infusion port 410, the infusion housing 400 has the second infusion port 420 with forward pressure, when the liquid is injected to the second infusion port 420 of the infusion housing 400, the syringe can extrude the elastic sealing member into the infusion housing 400, so that the elastic sealing member exits the second infusion port 420, and then the infusion is performed through the second infusion port 420, and after the syringe exits the infusion housing 400, the elastic sealing member reenters the second infusion port 420 under the action of elastic force, so as to seal the second infusion port 420, therefore, the present invention can satisfy the requirement of simultaneously transfusing a plurality of liquid medicines, and the infusion port with positive pressure can prevent the situation that blood or liquid medicine flows backwards after the external infusion system is removed.

As shown in fig. 2, as an embodiment of the infusion channel structure, the infusion channel includes a first infusion flow channel and a second infusion flow channel, an inner housing 450 is disposed in the infusion housing 400, the first infusion flow channel is formed between an outer sidewall of the inner housing 450 and an inner sidewall of the infusion housing 400, the second infusion flow channel is formed between an outer bottom wall of the inner housing 450 and an inner bottom wall of the infusion housing 400, the first infusion flow channel and the second infusion flow channel are communicated with each other, the first infusion flow channel may be a groove disposed on an outer sidewall of the inner housing 450 and a groove disposed on an inner sidewall of the outer housing, and the second infusion flow channel may also be designed such that a plurality of connection ribs are disposed around an outer sidewall of the inner housing 450, the connection ribs are connected to an inner wall of the outer housing, and a portion between the outer housing and the inner housing 450 without the connection ribs forms the first infusion flow channel, similarly, the second infusion flow channel may also be designed such that the first infusion port 410 is located on the sidewall of the infusion housing 400 and is communicated with the first infusion flow channel, the second infusion port 420 is located on the top end of the infusion housing 400 and is communicated with the first infusion flow channel, the liquid outlet is located at the bottom end of the infusion housing 400 and is communicated with the second infusion flow channel, and the elastic sealing member is located in the inner housing 450. The elastic sealing member can move up and down in the inner shell 450, can extend out of the inner shell 450 and enter the second infusion port 420, and is in a state of blocking the second infusion port 420 at the moment, when the elastic sealing member exits the second infusion port 420, the liquid medicine can enter from the second infusion port 420 and sequentially passes through the first infusion flow channel and the second infusion flow channel, and then flows out from the liquid outlet.

As a further embodiment of the elastic sealing element, the elastic sealing element comprises a spring 461 and a sealing plug 462, one end of the spring 461 is connected to the inner bottom wall of the inner housing 450, the other end of the spring 461 is connected to the sealing plug 462, and the sealing plug 462 can enter or exit the second infusion port 420. The sealing plug 462 can enter or exit the second infusion port 420 to close or open the second infusion port 420, when the sealing plug 462 is pressed inward by external force, the spring 461 is compressed, and when the external force is removed, the spring 461 restores and drives the sealing plug 462 to restore, thereby resealing the second infusion port 420.

In order to further improve the sealing performance of the second infusion port 420, in this embodiment, an installation groove is circumferentially arranged on the outer side wall of the sealing plug 462, and a sealing ring 470 is sleeved in the installation groove. The sealing ring 470 further improves the sealing of the sealing plug 462 and is not easily removed from the sealing plug 462 when installed in a mounting groove.

In the above embodiment, only one infusion port with positive pressure is provided, and in order to improve the general versatility of the whole, in the present embodiment, the second extension tube 500 is provided with a catheter clip 600. The liquid medicine passing through the second extension pipe 500 can be directly clamped and disconnected through the catheter clamp 600, backflow towards the first infusion port 410 and the second infusion port 420 can be directly prevented, and the use is more flexible.

As a further embodiment of the puncture needle 200, the puncture needle 200 includes a needle holder, a needle tube, a needle tip and a wing, the needle tube is disposed on the needle holder, the needle tip is connected to one end of the needle tube away from the needle holder, one end of the first extension tube 300 is connected to the needle holder and communicated with the needle tube, and the wing is disposed on the needle holder. The operator can exert force on the wing pieces to conveniently take up the whole needle base, and the needle tube is connected on the needle base and communicated with the first extension tube 300 to complete puncture and transfusion through the needle point.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.

Claims

1. A special needle of positive pressure implantation type drug delivery device is characterized in that: the method comprises the following steps:

the three-way joint (100) is provided with a first liquid injection port, a second liquid injection port and a first liquid outlet, and a first heparin cap (110) is arranged in the first liquid injection port;

A puncture needle (200);

a first extension tube (300) having one end connected to the puncture needle (200) and the other end connected to the first liquid outlet;

the infusion device comprises an infusion shell (400), wherein an infusion channel is arranged in the infusion shell (400), a first infusion port (410), a second infusion port (420) and a second liquid outlet (430) which are communicated with each other are arranged on the infusion shell (400), a second heparin cap (440) is arranged in the first infusion port (410), an elastic sealing element is arranged in the infusion shell (400), and the elastic sealing element can enter or exit the second infusion port (420);

and a second extension pipe (500) having one end connected to the second liquid outlet (430) and the other end connected to the second liquid inlet.

2. The needle special for the positive pressure implantable drug delivery device according to claim 1, wherein: the transfusion channel comprises a first transfusion flow channel and a second transfusion flow channel, an inner shell (450) is arranged in the transfusion shell (400), the first transfusion flow channel is formed between the outer side wall of the inner shell (450) and the inner side wall of the transfusion shell (400), the second transfusion flow passage is formed between the outer bottom wall of the inner shell (450) and the inner bottom wall of the transfusion shell (400), the first transfusion flow channel is communicated with the second transfusion flow channel, the first transfusion port (410) is positioned on the side wall of the transfusion shell (400) and communicated with the first transfusion flow channel, the second transfusion port (420) is positioned at the top end of the transfusion shell (400) and communicated with the first transfusion flow channel, the liquid outlet is positioned at the bottom end of the infusion shell (400) and communicated with the second infusion flow channel, and the elastic sealing element is positioned in the inner shell (450).

3. The needle special for the positive pressure implantable drug delivery device according to claim 2, wherein: the elastic sealing element comprises a spring (461) and a sealing plug (462), one end of the spring (461) is connected to the inner bottom wall of the inner shell (450), the other end of the spring (461) is connected to the sealing plug (462), and the sealing plug (462) can enter or exit the second infusion port (420).

4. The needle special for the positive pressure implantable drug delivery device according to claim 3, wherein: the outer side wall of the sealing plug (462) is provided with a mounting groove in a surrounding mode, and a sealing ring (470) is sleeved in the mounting groove.

5. The needle special for the positive pressure implantable drug delivery device according to claim 1, wherein: a catheter clip (600) is arranged on the second extension tube (500).

6. The needle special for the positive pressure implantable drug delivery device according to claim 1, wherein: the puncture needle (200) comprises a needle seat, a needle tube, a needle point and a wing piece, wherein the needle tube is arranged on the needle seat, the needle point is connected to one end, away from the needle seat, of the needle tube, one end of the first extension tube (300) is connected to the needle seat and communicated with the needle tube, and the wing piece is arranged on the needle seat.