CN211512936U

CN211512936U - Novel remaining needle

Info

Publication number: CN211512936U
Application number: CN201921662894.5U
Authority: CN
Inventors: 郭淑杰; 周鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-09-18
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a novel indwelling needle, which comprises a trocar, an indwelling hose and an indwelling needle seat which are communicated in sequence, the novel indwelling needle also comprises an inner sleeve, the inner sleeve comprises a first sleeve and a second sleeve which are communicated with each other, the first sleeve is arranged in the indwelling needle seat and is used for being connected with a transfusion device, the second sleeve is arranged in the indwelling hose, one end of the indwelling needle seat, which is far away from the indwelling hose, is provided with an annular separation blade, the inner diameter of the annular separation blade is the same as that of the first sleeve, the indwelling hose is provided with a hard tube at the corresponding part of the end part of the second sleeve, a valve core is arranged in the hard tube, a notch is arranged on the valve core, the notch divides the valve core into a plurality of valve clacks, and the length of the inner sleeve; the utility model provides a keep somewhere needle compares with current, and reverse sealing performance is better.

Description

Novel remaining needle

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a novel indwelling needle.

Background

Some patients need to be in bed for transfusion for a long time, in order to reduce the pain of the patients caused by repeated puncture and reduce the burden of medical care personnel, a puncture means is generally used clinically to place an indwelling needle in the blood vessel of the patients, the traditional indwelling needle comprises a stainless steel needle for inserting into the blood vessel of the patients, an extension tube connected with the stainless steel needle, an indwelling needle body and a one-hand clamp arranged on the extension tube, when transfusion is needed, the one-hand clamp is opened to enable the medicine to flow into the blood vessel, after the transfusion is finished, the one-hand clamp is required to be closed by a nurse, the operation is troublesome, the nurse easily forgets to close the one-hand clamp, in order to solve the problems, the existing indwelling needle is improved aiming at the indwelling needle, and comprises the stainless steel needle, the indwelling needle body and a needle tube sleeve, the indwelling needle body consists of a needle tube, a catheter seat and an anti-reflux valve, the bottom of the valve core is provided with a notch which divides the bottom of the valve core into 3-4 valve flaps, each valve flap is opened by the pressure of liquid medicine when puncturing or injecting, when the puncture needle is pulled out, the valve flaps are closed under the action of elastic tension of the valve flaps to block the outflow of blood, the indwelling needle requires that the toughness of the valve flaps cannot be too large and needs to be opened under the impact of the liquid medicine, so that the problem of poor reverse sealing performance exists, Chinese patent CN206934403U provides an arterial injection anti-reflux indwelling needle which is used for solving the problems, but the indwelling needle needs to use components such as a spring and the like, but the spring has the problem of elasticity reduction along with the increase of the number of insertion times, and the anti-reflux effect is general.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a novel indwelling needle. The utility model discloses specific technical scheme as follows:

the utility model provides a keep somewhere the needle, this novel keep somewhere the needle is including the trocar that communicates in proper order, keep somewhere the hose and keep somewhere the needle file, novel keep somewhere the needle still includes interior sleeve pipe, interior sleeve pipe is including the first sleeve pipe and the second sleeve pipe of mutual intercommunication, first sleeve pipe sets up in keeping somewhere the needle file, be used for being connected with infusion set, the second sleeve pipe is located to keep somewhere the hose, it keeps away from the one end of keeping somewhere the hose to keep somewhere the needle file and is equipped with the stop part, the internal diameter of stop part is the same with the internal diameter of first sleeve pipe, it is equipped with the hard pipe with the corresponding department of the tip of second sleeve pipe to keep somewhere the hose, be equipped with the case in the hard pipe, be equipped with the incision on the case, the incision is split into.

Further improvement, the thickness of the valve core is gradually reduced from the middle to the periphery.

Further improved, the valve core is gradually contracted from the indwelling needle seat to the direction of the trocar.

The improved structure comprises a needle retaining seat, wherein the needle retaining seat is fixedly connected with the outer side wall of the needle retaining seat, the needle retaining seat sequentially comprises a silica gel sheet, a glue layer and an anti-sticking layer, and the side wall of the glue layer, far away from the silica gel sheet, is fixedly connected with the needle retaining seat.

The utility model has the advantages as follows: the utility model provides a keep somewhere needle compares with current, and reverse sealing performance is better.

Drawings

FIG. 1 is a partial sectional view of an indwelling needle according to embodiment 1;

FIG. 2 is a schematic structural view of an indwelling needle according to embodiment 1;

FIG. 3a is a cross-sectional view of the valve cartridge of embodiment 2;

FIG. 3b is a cross-sectional view of the valve cartridge of embodiment 2;

FIG. 3c is a cross-sectional view of the valve cartridge of embodiment 2;

fig. 4 is a sectional view of the valve cartridge of embodiment 2;

FIG. 5 is a partial sectional view of embodiment 3;

FIG. 6 is a sectional view of the indwelling needle fixing device according to embodiment 3.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, wherein the components are shown in the drawings and are not necessarily drawn to scale for clarity.

Example 1

Embodiment 1 provides an indwelling needle, as shown in fig. 1, this novel indwelling needle is including trocar 1 that communicates in proper order, keep somewhere hose 2 and keep somewhere needle file 3, novel indwelling needle still includes interior sleeve pipe, interior sleeve pipe includes first sleeve pipe 5 and second sleeve pipe 6 of intercommunication each other, first sleeve pipe 5 sets up in keeping somewhere needle file 3, be used for being connected with infusion set 4, second sleeve pipe 6 is located keeps somewhere hose 2, it is equipped with blocking portion 7 to keep somewhere one end that needle file 3 kept away from keeping somewhere hose 2, the internal diameter of blocking portion 7 is the same with the internal diameter of first sleeve pipe 5, it is equipped with hard pipe 8 to keep somewhere the corresponding department of hose 2 and the tip of second sleeve pipe 6, be equipped with case 9 in the hard pipe 8, be equipped with incision 10 on the case 9, incision 10 is cut apart into a plurality of valve clacks 11 with case 9, the length of interior sleeve pipe is less than the distance between case 9.

Wherein, the trocar comprises a cannula and a puncture guiding needle core for puncturing the skin of a patient, including but not limited to common type and safe type, the indwelling needle seat is used for connecting the infusion device, the indwelling hose is used for communicating the trocar and the indwelling needle seat, the trocar, the indwelling hose and the indwelling needle seat can adopt an integrated forming method in the preparation process, the inner diameter of the first cannula is slightly larger than the outer diameter of the head of the infusion device, the infusion device can be a device such as an infusion set or an injector for inputting liquid medicine and the like into a patient, the blocking part and the indwelling needle seat are integrally formed, the hard tube is fixedly connected with the inner side wall of the indwelling hose, the fixed connection mode includes but is not limited to bonding or integral forming and the like, the toughness of the valve clack of the embodiment can be higher than or equal to that of the valve clack of the prior art, and the valve core used in the embodiment includes but is not limited to the valve core disclosed in Chinese patent CN 206934403U; as shown in fig. 2, when in use, the position of the inner sleeve is adjusted to be in contact with the blocking part, the indwelling hose is held by hand to be tightly attached to the inner sleeve, the infusion device is inserted into the indwelling needle seat and is distributed with the gap of the inner sleeve, the infusion device is pushed again to drive the inner sleeve to flush the valve core, the valve core passes through the gap formed by the valve clacks, the infusion can be carried out at the moment, after the infusion is finished, the infusion device is withdrawn from the indwelling needle seat, the inner sleeve is driven by the infusion device to be withdrawn from the valve core at the moment, the valve clacks have small elasticity and large toughness and are tightly attached together again to form a closed space, the inner sleeve is retained in the indwelling needle seat by the; the utility model discloses a set up interior sleeve pipe, can improve the toughness of case under the condition of guaranteeing the infusion success, and then make the reverse sealing performance who keeps somewhere the needle better.

Example 2

Embodiment 2 provides an indwelling needle which is different from embodiment 1 in that the thickness of the valve element 9 is gradually reduced from the middle to the periphery as shown in fig. 3a-c, and the valve element 9 is gradually contracted from the indwelling needle holder 3 toward the trocar 1 as shown in fig. 4.

In the present embodiment, in the case of the valve element made of the same material, by specifically defining the structures of the above four valve elements, the sealing performance of the valve element can be further improved, and the effect of blocking the backflow of the liquid medicine can be further improved.

Example 3

Embodiment 3 provides an indwelling needle, which is different from embodiment 1 in that, as shown in fig. 5 or fig. 6, an indwelling needle fixing device is fixedly connected to the outer side wall of the indwelling needle base 3, the indwelling needle fixing device sequentially comprises a silica gel sheet 12, an adhesive layer 13 and an anti-sticking layer 14, and the side wall of the silica gel sheet 12, which is far away from the adhesive layer 13, is fixedly connected with the indwelling needle base 3.

The thickness of the silica gel sheet can be adjusted according to specific conditions, such as 0.1cm, 0.2cm and the like, the application is not particularly limited, the silica gel sheet is fixedly connected with the adhesive layer, the non-stick layer can be stripped from the adhesive layer, and the mode of fixedly connecting the silica gel sheet and the indwelling needle seat is not particularly limited in the application, including but not limited to bonding; when the puncture needle is used, firstly, the sleeve is used for puncturing the skin of a patient, after the puncture is successful, the non-stick layer is removed, and the adhesive layer is stuck to the surface of the skin of the patient, so that the fixation can be completed; the technical scheme of this embodiment can solve current keep somewhere the needle and will keep somewhere the needle and be fixed in patient skin surface through medical adhesive tape, keep somewhere the needle file and cause the friction to patient skin and even damage and keep somewhere the needle file and press against the uncomfortable sense that brings for the patient at patient skin.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. The novel indwelling needle comprises a trocar (1), an indwelling hose (2) and an indwelling needle seat (3) which are sequentially communicated, and is characterized in that the novel indwelling needle further comprises an inner sleeve, the inner sleeve comprises a first sleeve (5) and a second sleeve (6) which are mutually communicated, the first sleeve (5) is arranged in the indwelling needle seat (3) and is used for being connected with an infusion device (4), the second sleeve (6) is positioned in the indwelling hose (2), one end of the indwelling needle seat (3) far away from the indwelling hose (2) is provided with a blocking part (7), the inner diameter of the blocking part (7) is the same as that of the first sleeve (5), a hard tube (8) is arranged at the corresponding position of the end parts of the indwelling hose (2) and the second sleeve (6), a valve core (9) is arranged in the hard tube (8), the valve core (9) is provided with a notch (10), the notch (10) divides the valve core (9) into a plurality of valve flaps (11), and the length of the inner sleeve is smaller than the distance between the valve core (9) and the blocking part (7).

2. The novel indwelling needle as claimed in claim 1, wherein the thickness of the valve core (9) is gradually reduced from the middle to the periphery.

3. The novel indwelling needle according to claim 1, wherein the valve core (9) is gradually contracted from the indwelling needle holder (3) towards the direction of the trocar (1).

4. The novel indwelling needle according to claim 1, wherein an indwelling needle fixing device is fixedly connected to the outer side wall of the indwelling needle holder (3), the indwelling needle fixing device comprises a silicone sheet (12), an adhesive layer (13) and a non-stick layer (14) in sequence, and the side wall of the silicone sheet (12) far away from the adhesive layer (13) is fixedly connected with the indwelling needle holder (3).