CN219070546U

CN219070546U - Novel PICC pjncture needle

Info

Publication number: CN219070546U
Application number: CN202221683738.9U
Authority: CN
Inventors: 于静; 李育玲; 张文光; 冯丽娜; 南俊波; 邱玉芳; 崔旭静
Original assignee: First Hospital of Shanxi Medical University
Current assignee: First Hospital of Shanxi Medical University
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-05-26
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a novel PICC puncture needle, which comprises a puncture needle and a guide wire interface; the first end of the puncture needle is a sharp end; the second end is provided with a connector; the connector is internally provided with a diversion cavity; a stop structure is arranged in the diversion cavity; the diversion cavity is externally connected with an air outlet pipe; the first end of the air outlet pipe is detachably connected with the flow guide cavity; the first end of the air outlet pipe is provided with a release component; the release component can extend into the diversion cavity and contact with the stop structure; the seal wire interface sets up the side at the connector, and is provided with leak protection subassembly in the seal wire interface.

Description

Novel PICC pjncture needle

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a novel PICC puncture needle.

Background

PICC puts the pipe, is through peripheral vein puncture central venous catheterization, is puncture from the vein of peripheral arm with the pipe, and the pipe is directly close to the great vessel of heart. The direct contact between the chemotherapeutic medicine and the arm vein is avoided, and the blood reflux of the great vein is faster, so that the chemotherapeutic medicine can be diluted rapidly, and the irritation of the medicine to the blood vessel is prevented, thereby effectively protecting the upper limb vein, reducing the occurrence of phlebitis, relieving the pain of a patient and improving the life quality of the patient.

Before PICC catheterization, firstly puncturing a vein by using puncture, and then performing guide wires along the inner cavity of the puncture needle to the superior vena cava of a patient; however, the existing puncture needle does not have the function of resisting blood reflux, so that the blood of a patient is exposed to the air in the puncture process, and the infection probability of the patient is increased; in addition, the medical staff is easy to be infected, and the transmission probability of diseases such as hepatitis, AIDS and the like is increased.

The present utility model addresses the above problems by providing a novel PICC puncture needle.

Disclosure of Invention

In order to overcome the problems presented in the background art, the utility model provides a novel PICC puncture needle.

A novel PICC puncture needle comprises a puncture needle and a guide wire interface; the first end of the puncture needle is a sharp end; the second end is provided with a connector; the connector is internally provided with a diversion cavity; a stop structure is arranged in the diversion cavity; the diversion cavity is externally connected with an air outlet pipe; the first end of the air outlet pipe is detachably connected with the flow guide cavity; the first end of the air outlet pipe is provided with a release component; the release component can extend into the diversion cavity and contact with the stop structure; the seal wire interface sets up the side at the connector, and is provided with leak protection subassembly in the seal wire interface.

Further, the flow guiding cavity comprises: the first cavity and the second cavity are provided with an interlayer; and a first through hole is arranged on the interlayer; the stop structure is arranged in the first cavity.

Further, a first end of the cavity is provided with a conical opening, and a connecting rod is arranged outside the conical opening; and is connected with the air outlet pipe through a connecting rod.

Further, the outer wall of the connecting rod is provided with a thread groove, and the inner wall of the first end of the air outlet pipe is provided with a thread section; the air outlet pipe is meshed with the thread groove through the thread section to be connected with the connecting rod.

Further, the second end of the air outlet pipe is provided with a heparin cap.

Further, the cutoff structure includes: a return spring, a stop assembly; the first end of the reset spring is connected with the interlayer, and the second end of the reset spring is connected with the stop assembly; the cut-off component is in tangential fit with the conical opening; the release assembly is in contact with the shut-off assembly; when the air outlet pipe is connected with the air outlet pipe, the release component stretches into the first cavity and is in contact with the stop component, and meanwhile, the reset spring is compressed, so that the flow guide cavity is communicated with the air outlet pipe, and when the connection between the air outlet pipe and the connector is disconnected, the reset spring is released and compressed, so that the stop component is reset, and the sealing of the connector is realized.

Further, the release assembly includes: a connecting shaft and a hollowed-out plate; the hollowed-out plate is arranged inside the first end of the air outlet pipe, and the hollowed-out plate and the air outlet pipe are integrally connected; the connecting shaft is arranged at the center origin of the hollowed-out plate and is integrally connected with the hollowed-out plate.

Further, the length of the connecting shaft is longer than the length from the hollowed-out plate to the first end of the air outlet pipe; this arrangement ensures that the shut-off element is pushed open by the connecting shaft.

Further, the outer wall of the connector is also provided with a handheld part, and the handheld part is convenient for a doctor to carry out needle holding operation on a patient.

Furthermore, the connector and the air outlet pipe are both made of transparent materials; is convenient for doctors to observe the puncture points.

Further, the guide wire interface is communicated with the guide cavity in the connector, the guide wire interface is not perpendicular to the connector, and the first end of the guide wire interface is opposite to the connector, so that the guide wire can enter better.

Further, the leak-proof component is made of elastic materials and cannot be excessively tensioned.

Further, the thickness of the leakage-proof component is 0.5 mm-1 mm, and the leakage-proof component is convenient for the guide wire to pierce through the leakage-proof component and enter the flow guide cavity.

When in use, the air outlet pipe is connected with the connector through the connecting rod; the connecting shaft extends into the first cavity through the connecting rod, the connecting shaft is in contact with the stop assembly, the front top of the stop assembly is pressed tightly by the reset spring, the flow guiding cavity is communicated with the air outlet pipe, and after the connection between the connector and the air outlet pipe is disconnected, the stop assembly is reset by the reset spring releasing the pressing, so that the connector is sealed; during puncturing, medical staff holds the puncture needle holding part to perform puncturing operation for a patient; after the puncture is finished, the guide wire is placed into the guide cavity through the guide wire interface, and the leakage-proof assembly is not in a tensioning state in the guide wire placement process, so that the guide wire puncture point is tightly attached to the guide wire, and the problem of blood leakage in the guide wire placement process is prevented.

The utility model has the beneficial effects that:

by arranging the air outlet pipe, the blood return condition of a patient during puncture can be observed, and the blood can not be exposed in the air during the puncture process; the probability of infection of the patient is reduced, and medical staff performing the operation is protected.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the overall structure of the present utility model;

FIG. 3 is a cross-sectional view of a cut-off structure of the present utility model;

FIG. 4 is a schematic view of a connector according to the present utility model;

FIG. 5 is a cross-sectional view of a guidewire interface of the present utility model;

FIG. 6 is a schematic view of an outlet pipe according to the present utility model;

FIG. 7 is a schematic view of a first end of the outlet tube of the present utility model;

in the figure, 1, a puncture needle; 11. a guidewire interface; 111. a leak-proof assembly; 12. a connector; 121. a first cavity; 122. a second cavity; 13. a connecting rod; 14. an air outlet pipe; 141. a heparin cap; 15. a return spring; 16. a shut-off assembly; 17. a connecting shaft; 18. a hollowed-out plate; 19. a hand-held part.

Detailed Description

The following detailed description of the embodiments of the present utility model will be made more apparent to those skilled in the art from the following detailed description, in which the utility model is embodied in several, but not all, embodiments of the utility model. The utility model may be embodied or applied in other specific forms and features of the following examples and examples may be combined with each other without conflict, all other examples being contemplated by those of ordinary skill in the art without undue burden from the present disclosure, based on the examples of the utility model.

Example 1

1-4, a novel PICC puncture needle 1 comprises a puncture needle 1 and a guide wire interface 11; the first end of the puncture needle 1 is a sharp end; the second end is provided with a connector 12; a diversion cavity is arranged in the connector 12; a stop structure is arranged in the diversion cavity; the diversion cavity is externally connected with an air outlet pipe 14; the first end of the air outlet pipe 14 is detachably connected with the diversion cavity; a release assembly is provided at a first end of the outlet tube 14; the release component can extend into the diversion cavity and contact with the stop structure; the guide wire interface 11 is arranged at the side edge of the connector 12, and a leakage-proof component 111 is arranged in the guide wire interface 11.

Example 2

Referring to fig. 2-4, a flow guiding chamber is provided on the basis of embodiment 1, the flow guiding chamber comprising: a first cavity 121 and a second cavity 122, wherein the first cavity 121 and the second cavity 122 are provided with a separation layer; and a first through hole is arranged on the interlayer; the stop structure is disposed within the first cavity 121.

The first end of the first cavity 121 is provided with a conical opening, and a connecting rod 13 is arranged outside the conical opening; and is connected with an air outlet pipe 14 through a connecting rod 13.

The outer wall of the connecting rod 13 is provided with a thread groove, and the inner wall of the first end of the air outlet pipe 14 is provided with a thread section; the air outlet pipe 14 is meshed with the thread groove through the thread section to realize the connection with the connecting rod 13.

The stop structure comprises: a return spring 15 and a shut-off assembly 16; the first end of the return spring 15 is connected with the interlayer, and the second end of the return spring 15 is connected with the stop assembly 16; the stop assembly 16 is in tangential engagement with the tapered opening; the release assembly is in contact with the shut-off assembly 16; when the air outlet pipe 14 is connected with the connector 12, the release component stretches into the first cavity 121 and contacts with the stop component 16, and meanwhile, the return spring 15 compresses tightly, so that the flow guide cavity is communicated with the air outlet pipe 14, and when the connector 12 is disconnected with the air outlet pipe 14, the return spring 15 releases the compression, so that the stop component 16 resets, and the sealing of the connector 12 is realized.

Example 3

Referring to fig. 5 to 7, the outlet tube 14 is provided on the basis of embodiment 1, and the second end of the outlet tube 14 is provided as a heparin cap 141.

The release assembly includes: a connecting shaft 17 and a hollowed-out plate 18; the hollowed-out plate 18 is arranged inside the first end of the air outlet pipe 14, and the hollowed-out plate 18 is integrally connected with the air outlet pipe 14; the connecting shaft 17 is disposed at the center origin of the hollowed-out plate 18, and is integrally connected with the hollowed-out plate 18.

The length of the connecting shaft 17 is longer than the length from the hollowed-out plate 18 to the first end of the air outlet pipe 14; this arrangement ensures that the shut-off assembly 16 is lifted off by the connecting shaft 17.

The outer wall of the connector 12 is also provided with a hand-held portion 19 which facilitates the needle-holding operation of the patient by the practitioner.

The connector 12 and the air outlet pipe 14 are made of transparent materials; is convenient for doctors to observe the puncture points.

The guide wire interface 11 is communicated with the guide cavity in the connector 12, the guide wire interface 11 is not perpendicular to the connector 12, and the first end of the guide wire interface 11 is opposite to the connector 12, so that the guide wire can enter better.

The containment assembly 111 is made of an elastic material and the containment assembly 111 is not overstretched.

The thickness of the leakage-proof component 111 is 0.5 mm-1 mm, and the leakage-proof component 111 is convenient for the guide wire to penetrate through and enter the flow guide cavity.

The above description of embodiments is only for the understanding of the present utility model. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present utility model without departing from the principles of the utility model, and such modifications will fall within the scope of the claims.

Claims

1. A novel PICC puncture needle comprises a puncture needle and a guide wire interface; the puncture needle is characterized in that the first end of the puncture needle is a sharp end; the second end is provided with a connector; the connector is internally provided with a diversion cavity; a stop structure is arranged in the diversion cavity; the diversion cavity is externally connected with an air outlet pipe; the first end of the air outlet pipe is detachably connected with the flow guide cavity; the first end of the air outlet pipe is provided with a release component; the release component can extend into the diversion cavity and contact with the stop structure; the seal wire interface sets up the side at the connector, and is provided with leak protection subassembly in the seal wire interface.

2. The novel PICC needle of claim 1, wherein the flow guiding lumen comprises: the first cavity and the second cavity are provided with an interlayer; and a first through hole is arranged on the interlayer; the stop structure is arranged in the first cavity.

3. The novel PICC needle of claim 2, wherein a first end of the cavity is provided with a tapered opening, and a connecting rod is provided outside the tapered opening; and is connected with the air outlet pipe through a connecting rod.

4. The novel PICC needle of claim 3, wherein the outer wall of the connecting rod is provided with a thread groove, and the inner wall of the first end of the air outlet pipe is provided with a thread section; the air outlet pipe is meshed with the thread groove through the thread section to be connected with the connecting rod.

5. The novel PICC needle of claim 1, wherein the shut-off structure includes: a return spring, a stop assembly; the first end of the reset spring is connected with the interlayer, and the second end of the reset spring is connected with the stop assembly; the cut-off component is in tangential fit with the conical opening; the release assembly is in contact with the shut-off assembly.

6. The novel PICC needle of claim 1, wherein the release assembly includes: a connecting shaft and a hollowed-out plate; the hollowed-out plate is arranged inside the first end of the air outlet pipe, and the hollowed-out plate and the air outlet pipe are integrally connected; the connecting shaft is arranged at the center origin of the hollowed-out plate and is integrally connected with the hollowed-out plate.

7. The novel PICC needle of claim 6, wherein the length of the connecting shaft is greater than the length from the hollowed-out plate to the first end of the air outlet tube.

8. The novel PICC needle of claim 1, wherein the connector outer wall is further provided with a grip.

9. The novel PICC needle of claim 1, wherein the guide wire port is in communication with the guide lumen inside the connector, the guide wire port is not perpendicular to the connector, and the first end of the guide wire port is opposite the connector.

10. The novel PICC needle of claim 1, wherein the leak-proof member is made of an elastic material; the thickness of the leakage-proof component is 0.5 mm-1 mm.