CN215275052U

CN215275052U - Flaring indwelling needle

Info

Publication number: CN215275052U
Application number: CN202120309748.5U
Authority: CN
Inventors: 宋勇
Original assignee: Weihai Kalmade Medical Technology Co ltd
Current assignee: Weihai Kalmade Medical Technology Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-12-24
Anticipated expiration: 2031-02-03

Abstract

The utility model discloses a flared indwelling needle, which comprises a cannula seat, an indwelling hose, a pressing piece, a needle seat and a steel needle; the indwelling hose is communicated with the sleeve seat; the pressing part of the pressing piece is exposed outside the sleeve seat, and the limiting part of the pressing piece is inserted into a limiting groove formed in the inner wall of the sleeve seat; a frosted area is formed at the tail part of the steel needle, one end of the frosted area is fixedly connected with a trumpet-shaped flared opening, and the frosted area is inwards sunken to form a reinforcing groove; the tail part of the steel needle is fixedly connected with the needle seat, the inner part of the sleeve seat is hermetically provided with a sealing plug, and the tip end of the steel needle penetrates through the sealing plug and is inserted into the indwelling hose. The novel steel needle is stably connected with the needle seat and cannot be separated, so that the use safety of the remaining needle is fully ensured; simultaneously, extract the steel needle through pressing down the pressing part, and the steel needle is extracted fastly, avoids the needle point of steel needle at patient's blood vessel internal rotation, alleviates injury and the psychological burden that causes the patient.

Description

Flaring indwelling needle

Technical Field

The utility model relates to an indwelling needle especially relates to a needle is kept somewhere to flaring.

Background

The indwelling needle is a common medical instrument in nursing work, has convenient use and the function of reducing the puncture times of patients, thereby reducing repeated puncture during clinical transfusion, reducing puncture pain of patients and workload of clinical nursing staff, and having wide application in the current clinic. After the indwelling needle is clinically punctured, the steel needle needs to be pulled out, however, the steel needle part needs to be rotated when the existing puncture needle is pulled out, and the needle point in the blood vessel is easy to cause secondary damage to a patient when rotated, so that the pain of treatment is increased, and the psychological burden of the patient is increased; in addition, in the existing remaining needle, the tail part of the steel needle is directly connected with the glue injection of the needle seat, the connection structure is not stable enough, and once the steel needle is separated from the needle seat, danger is easily caused; accordingly, there is a need to provide a new flared indwelling needle that is safer to use and reduces injury to the patient.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a flared indwelling needle.

In order to solve the technical problem, the utility model discloses a technical scheme is: a flaring indwelling needle comprises a cannula seat, an indwelling hose, a pressing piece, a needle seat and a steel needle;

the interior of the sleeve seat is hollow, and the indwelling hose is fixedly connected with the sleeve seat and communicated with the inner cavity of the sleeve seat; the pressing pieces and the needle base are connected through a pressing spring and are symmetrically arranged in two numbers, each pressing piece forms a pressing part and a limiting part, the pressing parts are exposed out of the casing base, and the limiting parts are inserted into limiting grooves formed in the inner wall of the casing base;

a frosted area is formed at the tail part of the steel needle, the frosted area is of a surface layer structure with concave and convex points, one end of the frosted area is fixedly connected with a trumpet-shaped flaring, and the frosted area is sunken inwards to form a reinforcing groove;

the tail part of the steel needle is inserted into the needle seat and is fixedly connected with the needle seat, the inner part of the sleeve seat is hermetically provided with a sealing plug, and the steel needle penetrates through the sealing plug from the tip of the needle and is inserted into the indwelling hose.

Further, the connection tail part of the steel needle is inwards sunken to form an inner groove.

Further, the needle file includes roof, pedestal, and the roof is connected through the spliced pole with the pedestal, and forms the mounting groove between roof and pedestal, and pressing piece, press the spring and all be located mounting groove department.

Furthermore, a plugging piece, a return spring and a baffle are also arranged in the sleeve seat; the baffle plate is attached to the upper end of the sealing plug and fixed in the sleeve seat, the plugging piece is connected with the needle seat, and the reset spring is sleeved on the steel needle and positioned between the plugging piece and the baffle plate.

Furthermore, a fixing groove is formed in the inner wall of the sleeve seat, and the baffle plate is inserted into the fixing groove.

Furthermore, the lower end of the seat body of the needle seat is fixedly connected with an internal thread joint, and the plugging piece is provided with an external thread joint which is connected with the internal thread joint in a matching way.

Furthermore, a circular retaining ring is fixedly arranged around the bottom end of the base body, and the top end of the sleeve base extends towards the center to form a blocking ring plate for blocking the circular retaining ring.

Furthermore, one side of the sleeve seat is provided with a transfusion tube interface which is communicated with the indwelling hose through the inner cavity of the sleeve seat; the infusion tube interface is connected with an infusion hose.

The utility model discloses a flared indwelling needle, which comprises a steel needle for puncture, a connecting tail part which can be better fixedly connected with a seat body, and a needle seat which is separated from the steel needle, thereby fully ensuring the use safety of the indwelling needle; meanwhile, the steel needle is directly pulled out in a pressing mode, so that the needle tip of the steel needle is prevented from rotating in the blood vessel of the patient, the injury to the patient is reduced, and the psychological burden of the patient is reduced; in addition, in the process of pulling out the steel needle, the steel needle is assisted to be pulled out by the return spring, so that the speed and the effect of pulling out the steel needle from the blood vessel are accelerated.

Drawings

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

Fig. 2 is a schematic structural view of the steel needle in fig. 1.

Fig. 3 is a schematic structural view of the needle holder and the pressing member in fig. 1.

In the figure: 1. a cannula holder; 2. a pressing member; 21. a pressing part; 22. a limiting part; 3. a pressing spring; 4. a needle seat; 41. a top plate; 42. connecting columns; 43. a base body; 44. a circular retainer ring; 45. an internal thread joint; 5. fixing grooves; 6. a baffle plate; 7. a sealing plug; 8. a steel needle; 81. a sanding area; 82. flaring; 83. Reinforcing the groove; 9. a hose is left; 10. an infusion tube interface; 11. a flexible infusion tube; 12. a blocking member; 121. an externally threaded nipple; 13. a return spring; 14. a limiting groove; 15. a stop ring plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

A flaring indwelling needle comprises a cannula seat 1 and an indwelling hose 9, and also comprises a pressing piece 2, a needle seat 4 and a steel needle 8 as shown in figure 1;

wherein, the interior of the casing seat 1 is hollow, and the indwelling hose 9 is fixedly connected with the casing seat 1 and communicated with the inner cavity of the casing seat 1; after the steel needle 8 is pulled out of the blood vessel, the indwelling soft liver is made of flexible TPU material with excellent biocompatibility with human body, and is safe, non-toxic and free of puncture. Meanwhile, one side of the sleeve seat 1 is provided with an infusion tube interface 10, and the infusion tube interface 10 is communicated with an indwelling hose 9 through the inner cavity of the sleeve seat 1; the infusion tube interface 10 is connected with an infusion hose 11. Thus, an infusion channel is formed by the infusion hose, the infusion tube interface 10, the inner cavity of the cannula holder 1 and the indwelling hose 9.

The steel needle 8 plays a role in puncture, the tail part of the steel needle 8 is inserted into the needle seat 4 and is fixedly connected with the needle seat 4, the inner part of the casing seat 1 is hermetically provided with a sealing plug 7, and the needle tip of the steel needle 8 penetrates through the sealing plug 7 and is inserted into the indwelling hose 9.

As shown in fig. 2, the steel needle 8 is a solid steel needle and has a sharp needle tip for puncturing a blood vessel, and in order to improve the stability of glue injection connection between the steel needle 8 and the needle seat 4, a frosted area 81 is formed at the tail of the steel needle 8, the frosted area 81 is a surface layer structure with concave and convex points, and the concave small holes can bear more injection glue; in addition, the frosted area 81 is sunken inwards to form a reinforcing groove 83, so that the injection molding amount of the injection molding glue is further increased; meanwhile, one end of the frosted area 81 is fixedly connected with a flared flaring 82, the flared flaring 82 forms a turnover structure, the embedding degree of the frosted area in injection molding glue is effectively enhanced, and the drawing strength of the steel needle and the needle seat is further improved. Therefore, the drawing strength of the steel needle 8 and the needle seat 4 is effectively enhanced through the design of the trumpet-shaped flaring 82; through the arrangement of the frosting area 62, the connecting friction force and the injection molding amount of the injection molding glue are increased, and the injection molding glue amount is directly increased by the reinforcing groove 63; therefore, the connection between the steel needle and the needle seat is more stable and safer, the steel needle is prevented from being separated from the needle seat, and the use safety of the remaining needle is improved.

For the indwelling needle, after the steel needle is punctured, the steel needle needs to be pulled out of the blood vessel and separated from the indwelling hose, and the traditional indwelling needle mostly adopts a mode of rotating the steel needle to pull out the steel needle, so that secondary injury of a patient is easily caused; for the flared indwelling needle disclosed by the utility model, the pressing pieces 2 are designed, and two pressing pieces 2 are symmetrically arranged and are respectively connected with the needle seat 4 connected with the steel needle through the pressing spring 3; as shown in fig. 1 and 3, firstly, the needle holder 4 includes a top plate 41 and a holder body 43, the top plate 41 is connected with the holder body 43 through a connecting column 42, the diameter of the connecting column 42 is smaller than the diameters of the top plate and the holder body 43, so that a mounting groove 46 is formed between the top plate 41 and the holder body 43, and the mounting groove 46 is used for arranging the pressing spring 3 and the pressing piece 2; meanwhile, each pressing piece forms a pressing part 21 and a limiting part 22, the pressing part 21 is exposed out of the casing seat 1, and the limiting part 22 is inserted into a limiting groove 14 formed in the inner wall of the casing seat 1. Therefore, in the initial state, the limiting part 22 of the pressing piece 2 is inserted into the limiting groove 14, and the limiting part 22 is tightly clamped in the limiting groove 14 under the extrusion of the pressing spring; in order to keep the balance of the pressing member 2, a plurality of groups of pressing springs can be arranged; when the steel needle needs to be pulled out, the pressing part 21 exposed outside the cannula seat is pressed, the pressing piece 2 extrudes the pressing spring 3, the limiting part 22 is separated from the limiting groove 14, and the needle seat is pulled to directly pull out the steel needle.

In order to avoid that the steel needle is difficult to pull out quickly when the pressing piece 2 is extruded, as shown in fig. 1, a return spring 13 is sleeved on the steel needle 8, and the pull-out operation of the steel needle 8 is assisted when the compressed return spring 13 realizes the return; the method specifically comprises the following steps: the sleeve seat 1 is also internally provided with a plugging piece 12, a return spring 13 and a baffle 6; the baffle 6 is attached to the upper end of the sealing plug 7 and fixed in the sleeve seat 1, and the baffle 6 is also provided with a through hole for the steel needle to pass through, and the through hole is aligned with the through hole on the sealing plug 7; the plugging piece 12 is connected with the needle seat 4, and the return spring 13 is sleeved on the steel needle 8 and is positioned between the plugging piece 12 and the baffle 6. A fixing groove 5 is formed in the inner wall of the sleeve seat 1, and the baffle 6 is inserted into the fixing groove 5 to be fixed; the connecting structure of the needle seat 4 and the plugging piece 12 is as follows: the lower end of the seat body 34 is fixedly connected with an internal thread joint 45, and the plugging piece 12 is provided with an external thread joint 121 which is matched and connected with the internal thread joint 45. Therefore, when the limiting part of the pressing piece 2 is limited in the limiting groove, the reset spring is extruded between the plugging piece 12 and the baffle 6, once the limiting part of the pressing piece 2 is separated from the limiting groove 14, the reset spring is not extruded by external force to restore the original shape, and then the plugging piece 12 applies upward thrust to the needle seat 4, so as to assist the steel needle 8 to pull out the blood vessel; at this time, the needle base top plate 41 is held by hand to pull the steel needle 8 out of the indwelling hose. Because the steel needle does not need to be completely pulled out to ensure the sealing performance of the sealing plug 7, the steel needle can be prevented from being inserted into the retention hose again under the action of the return spring.

In addition, in order to prevent the steel needle from completely sliding out of the cannula holder, a circular retaining ring 44 is fixedly surrounded at the periphery of the bottom end of the holder body 43, and the top end of the cannula holder 1 extends towards the center to form a blocking ring plate 15 for blocking the circular retaining ring 44.

For the flared indwelling needle disclosed by the utility model, the tip end of the steel needle 8 is utilized to puncture the blood vessel, after the puncture is finished, the pressing part 21 exposed outside the casing seat is pressed, and the pressing spring 3 is extruded by the pressing part 2, so that the limiting part 22 is separated from the limiting groove 14; at the moment, the return spring 13 is not extruded by external force to restore the original shape, and then the plugging piece 12 applies upward thrust to the needle seat 4, so that the needle seat 4 moves upward to drive the steel needle 8 to pull out the blood vessel; then, the needle holder top plate 41 is held by hand to pull out the steel needle 8 from the indwelling hose.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims

1. The utility model provides a needle is kept somewhere to flaring, includes cannula holder (1), keeps somewhere hose (9), its characterized in that: the needle holder also comprises a pressing piece (2), a needle seat (4) and a steel needle (8);

the interior of the sleeve seat (1) is hollow, and the indwelling hose (9) is fixedly connected with the sleeve seat (1) and communicated with the inner cavity of the sleeve seat (1); the two pressing pieces (2) are connected with the needle seat (4) through the pressing spring (3) and are symmetrically arranged, each pressing piece forms a pressing part (21) and a limiting part (22), the pressing part (21) is exposed out of the casing seat (1), and the limiting part (22) is inserted into a limiting groove (14) formed in the inner wall of the casing seat (1);

a frosted area (81) is formed at the tail part of the steel needle (8), the frosted area (81) is of a surface layer structure with concave and convex points, a flared flaring (82) is fixedly connected to one end of the frosted area (81), and the frosted area (81) is inwards sunken to form a reinforcing groove (83);

the tail of the steel needle (8) is inserted into the needle seat (4) and fixedly connected with the needle seat (4), the inner seal of the sleeve seat (1) is provided with a sealing plug (7), and the steel needle (8) penetrates through the sealing plug (7) from the tip of the needle and is inserted into the remaining hose (9).

2. The flared indwelling needle of claim 1, wherein: the needle seat (4) comprises a top plate (41) and a seat body (43), the top plate (41) is connected with the seat body (43) through a connecting column (42), a mounting groove (46) is formed between the top plate (41) and the seat body (43), and the pressing piece (2) and the pressing spring (3) are located at the mounting groove (46).

3. The flared indwelling needle of claim 2, wherein: a plugging piece (12), a return spring (13) and a baffle (6) are also arranged in the sleeve seat (1); baffle (6) laminating is in the upper end of sealing plug (7) and fixes in casing seat (1), shutoff piece (12) are connected with needle file (4), reset spring (13) cover is established on steel needle (8) and is located between shutoff piece (12) and baffle (6).

4. The flared indwelling needle of claim 3, wherein: the inner wall of the sleeve seat (1) is provided with a fixing groove (5), and the baffle (6) is inserted into the fixing groove (5).

5. The flared indwelling needle of claim 4, wherein: the lower end of a seat body (43) of the needle seat (4) is fixedly connected with an internal thread joint (45), and the plugging piece (12) is provided with an external thread joint (121) which is connected with the internal thread joint (45) in a matching way.

6. The flared indwelling needle of claim 5, wherein: the bottom of pedestal (43) is fixed all around to enclose and is equipped with circle retaining ring (44), the top of sleeve pipe seat (1) extends to the center and forms and blocks retaining ring board (15) that circle retaining ring (44).

7. The flared indwelling needle of claim 1, wherein: one side of the sleeve seat (1) is provided with an infusion tube interface (10), and the infusion tube interface (10) is communicated with the indwelling hose (9) through the inner cavity of the sleeve seat (1); the infusion tube interface (10) is connected with an infusion hose (11).